BESTeck Compatible for Samsung Galaxy Tab a 8.0 T387 SM-T387P SM-T387V T387A Dig


BESTeck Compatible for Samsung Galaxy Tab a 8.0 T387 SM-T387P SM-T387V T387A Dig 1

BESTeck Compatible for Samsung Galaxy Tab A 8.0 T387 SM-T387P SM-T387V T387A Digitizer Touch Screen No LCD Screens Electronics sostulsa.com

BESTeck Compatible for Samsung Galaxy Tab A 8.0 T387 SM-T387P SM-T387V T387A Digitizer Touch Screen (No LCD): Computers & Accessories. BESTeck Compatible for Samsung Galaxy Tab A 8.0 T387 SM-T387P SM-T387V T387A Digitizer Touch Screen (No LCD): Computers & Accessories. 100% New high quality Front Touch Screen Digitizer, Not include LCD display and Frame. . Special For Samsung Galaxy Tab A 8.0 2018 SM-T387 T387P SM-T387V T387A . Replace your broken, faulty, cracked, damaged dead touch ,slow respond touch digitizer glass. . Not included installation instruction ,tools or adhesive,, Professional technician is needed for installation. We wo not responsible for any damage due to improper operation. Fixcracked Touch Screen Replacement Parts Digitizer Glass Assembly for ipad 3 White. SQL100A 1600V Bridge Rectifier Three Phase Diode Bridge Rectifier AC to DC. Black SMSL Q5 Pro Digital Amplifier 2-50W USB/Coaxial/Optical with Remote Control. Half Flat & Pointed Foto4easy Professional Camera Lens Repair Opening Tool Spanner Wrench-flat Special Designed for Tiny Lens, Vanguard Alta BH-300 Ball Head, Shure Rycote Windjammer for Shure Motiv MV88 Digital Stereo Microphone Premium Digital Stereo Condenser Microphone Video Kit with Manfrotto PIXI Mini Tripod Shure MV88, Battery Replacement for Sony NWZ-E436F NWZ-E436FBLK 3.7V 570mAh NWZ-E436FBLU, Personal Car 30-Days GPS Tracker for Vehicles 2500mAh IoT Real-time GPS Tracking Device for Car NB-IoT Cat-M 4G Small Hidden GPS Locator for Vehicle with Global SIM Card Valuable. PC Desktop Computer Dell Inspiron 27 7790 Touch All in One 2TB SSD 64GB RAM Extreme Intel 10th Gen Core i7 Processor Turbo Boost to 4.90GHz, 64 GB RAM, 2 TB SSD, 27 Touchscreen FullHD IPS, Win 10. Wireless Shutter Remote Control with Wrist Strap ideal for Selfies/Group Photos Connect Faster Portable&Mini Camera Shutter Remote Control Black SLFC Bluetooth Remote Shutter for iPhone/Android, 2500mAh large capacity 0 cycle replacement battery MegaBatt Battery for iPhone 6 only with Professional Replacement Tool Kit and Instructions-12-Month Warranty. Noblik 1Pc Dc-4.0Ghz Rf Fixed Attenuator Module Board, Echo Dot Case Owl Statue Echo Dot Holder for Echo Dot 2nd and 1st Generation Cartoon Decor Echo Dot Holder Skin Cover Table Stand. Womens Rain Boots Ladies Punk Style Mid Snow Boots Garden Non-Slip Work Shoes Outdoor Water Shoes, fosa1 9501 Satellite Signal Finder TV Antenna Signal Strength Meter 950-2150MHz 7dB Sensitive Satellite Signal Finder Dish Net Work Analog Meter with LNB to REC Connector, Electrify Green XBOX 360 Wireless Controller Decal Style Skin CONTROLLER NOT INCLUDED.

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BESTeck Compatible for Samsung Galaxy Tab a 8.0 T387 SM-T387P SM-T387V T387A Dig 2

Advertising Benefits of LCD Module | Microtips Technology USA

Advertising Benefits: Why Join the LCD Module Bandwagon Now Nowadays, more and more industries are relying on outdoor LCD module displays for advertising. From the IT department, helming the TFT and LCD module display is moving to the marketing department where its various nifty features are being used to capture audience attention and encourage consumption. This trend is not new and is very much based on scientific study. According to a study, 70% of LED advertising screens create more impact on consumers and viewers compared with 43% of Facebook videos. With that much attention, it is no wonder that using LCDs is increasingly becoming a trend. More than a fad, here are a few reasons more businesses are opting for outdoor LCDs. 7 Reasons LCD Module Display is the Way to Go Simply put-advertisements on LCD displays read and look clearer and cleaner. With technological advancements showing no signs of stopping or slowing down, it could only be expected that the resolution of such displays will improve even more. Videos are more noticeable than plain text. They are more malleable, relatable, and can communicate your creative ideas more efficiently than text. If your audience can understand your message, conversion will be a lot easier. With their vibrant colors and dynamic images, it would be hard for any passerby to not notice and look at them, converting them into leads. As touchscreen LCD display module technology continues to advance, the potential for audience interaction is greater than ever. Customers can choose which ads they want to see and click on specific menu items for more information. Moreover, moving on from touchscreen displays, some LCD screens have been taught to "see" what is in front of it letting the audience interact with the display by waving their arms without even touching the screen! Technological advancements have made LCD screens more and more environmentally friendly. They are also very durable, able to withstand the most extreme outdoor conditions. An added incentive in using LCD technology is that it only uses one-third to half of the power used by tube monitors while taking 90% less space. It is also calmer in the eyes, thus causing less strain. Through LCDs, your brand's reach can be broadened, introducing your name to a larger field of audience. Being able to convey your message to a more significant number of consumers is beneficial for your business. Perhaps the most practical benefit of using LCD screens is that publishers and operators can quickly update the content. No matter what the outdoor condition may be, the only important thing is the control required for the PC procedure. Because of their compactness and space-saving features, LCD screens can easily be installed in places frequented by people-traffic corners, bus stops, elevator lobbies-your imagination's the limit. More than becoming a trend, LCD advertising is becoming the norm. With all of these benefits, what are you waiting for? Take charge of your brand! Let your customers know your message. Get on the LCD bandwagon now!

lcd screens related q&a:
  • My Laptop Has a Problem.I Try to Type but the Buttons Dont Work.Is It Serious?I Dont Have Much Money to Repair It.?

    Laptop keyboard not working 1] The first thing you can do is, try to find if some keys or keyboard has broken physically somewhere. If there is a physical impact, there is nothing much you can do. You need to carry this laptop to the service center.

    2] Take a brush and start cleaning the keyboard. Make sure you remove all the dust, and the keyboard is crisp and clean. You can use a laptop cleaning kit, or you may use an old toothbrush.

    Keep your brush dry and gently clean off your keyboard. 3] Another thing you can do to make sure the keyboard works when you have accessed the BIOS menu. Restart the computer and while it is booting up, hit the keys (usually Esc or Del) to open the BIOS menu.

    If you were able to open the BIOS menu and use the arrow keys to navigate, then we can assume the problem is with the software part and not the hardware part. 4] Now it is time to reinstall the keyboard drivers. You can temporarily enable the on-screen keyboard or connect an external keyboard if you are not comfortable without a keyboard.You may read this post on how to use the Windows computer without a keyboard or mouse for further details.

    Read more.

  • Best HP Laptop Chargers in 2021 (Product Reviews, & Buying Guides)

    One of the world's best and popular technology brands that produces high-quality laptops, computers, and other computing devices is HP. All of HP products are really best known for its top-notch features and high grade in both performance and quality. Even with laptop charger, HP always produces good quality chargers that ensure the safety and durability of your laptops.

    Of course, when talking about a laptop charger, you cannot be sure that your charger will last forever. It can be damaged and become worse in quality, and that is something you can not control. It is definitely one of the most frustrating moments when you have to replace a new laptop charger.

    When it comes to the quality of a product, even a laptop charger does matter. Imagine not being careful in purchasing a laptop charger and ending up buying a new one that might be harmful to your laptop battery or even your laptop, it does not feel good, right? However, with this article below, you will find out and know more about what you should consider when buying a laptop charger.

    On top of that, I have collected a full list of the top 10 Best HP Laptop Chargers in 2021, so let's get into the topic now! List of Best HP Laptop Chargers in 2021 According to customers' reviews, this Easy Style power adapter/charger is a must-have product for HP laptops users. This HP laptop charger powers up laptops faster than the other laptop chargers.

    On top of that, you no longer need to crawl around and weave cords under tables or chairs in order to move a cord every time from place to place. More importantly, this HP laptop charger is also convenient to carry around in your package when you are on a trip. Aside from these benefits, this product features the DC output of 19.5V 4.62A with an input of 100-240V 50-60HZ.

    It is also noted that this 90W laptop adapter is compatible with HP Envy TouchSmart, Pavilion 15 and 17 series laptops. Here comes another great quality laptop power adapter that works well with almost every HP laptop model. This HP laptop adapter does its job well in keeping your HP laptop's battery going on for a long time.

    Moreover, this HP product is hugely effective and highly efficient in giving you the best experience of choosing this as your laptop charger. More importantly, this HP laptop charger is known for its long-lasting and durable performance. As a customer, you can definitely rely on this product since it does not break shortly after using it; you can use it for up to several years.

    Furthermore, this advanced technological unit is well-packaged, and even contains a power supply cord and an adapter for your need as well. None Work with almost all HP laptops None Only charges when a laptop is turned off Do you know? This PowerSource HP laptop charger is listed as a product that meets the standards for electrical safety and design in the US and Canada.

    Therefore, if you are still concerned about some of the dangerous laptop chargers on the markets, this will change your mind. In addition, the DC output of this 65W laptop charger is 19.5V with 3.33A. And it is also compatible with 19.5V 2.30A 45W.

    This HP laptop adapter supports 110-240V input voltage with 4.5mm blue tip. Just like any other HP laptop charger/adapter, this one also comes with a well-packaged box containing a power supply AC adapter charger cord. Moreover, this laptop charger is suitable for many HP Smart Blue Tip models 65W/45W such as EliteBook 830 G5 / 840 G3 G4 G5 / 850 G3 G4 G5 / ProBook 45 G3 G5 / Pavilion x360 / Stream 11 Pro G3 and many more models' numbers.

    More special than that, this HP laptop charger replacement will not let you down as it does charge your device efficiently. In addition, this product is of a high standard that guarantees your device's safety. Also, this product is protected against short-circuiting, overvoltage, overcurrent, and internal overheating by safety mechanisms.

    This third-party laptop AC adapter will do its job by charging your laptop to the fullest level. Moreover, this high-tech laptop unit works very well with many HP laptops such as HP Stream 11-13-14 Series and some HP Pavilion and TouchSmart models. In addition to its compatibility, this HP laptop charger is a user-friendly product since it meets 100% of OEM (Original Equipment Manufacturer) conditions.

    Furthermore, the DC output of this 90W laptop adapter is 19.5V 4.62A with the 100-240V 50-60HZ of voltage input. On top of this, it is a special and high-quality laptop charger that offers a 12-month replacement warranty for customers. Although this is just a charger replacement for HP laptops, it works just fine like the original charger.

    This product does not run out of power supply for your laptop quickly, and it even comes with an appropriate price. None Tip of the charger does not fit perfectly 6. Emaks 45W AC Adapter/Charger/Power Supply for HP Pavilion models and more This Emaks HP laptop charger is made universally for various HP laptops variant users.

    It is fully compatible with many HP laptops such as HP Pavilion x2 11-h. 13-p Series, HP Spectre Ultrabook x2 PC 13-3000, 13-4000 13t-3000, 13-h000, HP Envy x360 x2 13 15 M6 Series, and many more models. More importantly, there is also a hidden heat sink inside the charger that will not make it overheated if the heat has somewhere outside in the box to go.

    Additionally, this laptop charger's power is 45W with an input of AC 100-240V, 50-60HZ, and its DC output is 19.5V 2.31A. This laptop charger will charge your laptop quickly and completely without any damages and issues. Despite not being a laptop adapter replacement from HP, this product works well and comes with a good warranty period as well.

    None Does not stay plugged in Ostrich brand presents another versatile HP laptop charger for customers who are looking for reasonably priced but high-quality products. This 65W adapter has an input voltage of 100-240V 50-60HZ with a DC output of 19.5V 3.33A. This laptop adapter is also compatible with 19.5V 2.3A 45W HP laptops as well.

    More than that, the charger is designed with Smart Blue Tip that will charge and recognize your laptops and supply the maximum suited charge current. Furthermore, it comes with a total of 10Ft power cord which keeps your device plugged in everywhere you work. Apart from these, it is compatible and portable with many HP laptops models.

    Hence, you can carry it around very comfortably due to its lightweight feature. On top of that, it is a top-quality laptop charger recognized for its top-grade performance with multi-protection for you and your device's safety. Also, this laptop replacement charger provides you a faster cooling system, flame retardant, long-lasting, and a temperature reduction system.

    Since the uni has pure copper material, this charger comes with safe stable wires which guarantee the wear resistance, anti-aging performance, and durability. None Compatible with almost all laptops 4. Easy Style 65W HP Laptop AC Adapter/Charger for Chromebook models and more Another fantastic HP laptop adapter from Easy Style that is compatible and suitable for various HP Chromebook models and HP Pavilion 15 Series.

    This 65W laptop charger supports DC output of 19.5V 3.33A with AC input of 100-240V 50-60HZ. Moreover, the cord is what makes this product special and easy to use. It is easy to move, and it allows you to use your laptop in more places such as the kitchen, on the road, on location for photoshoots rather than just staying in one office.

    Furthermore, the quality of this laptop replacement charger is very good to the point it works just as fine as the original HP laptop charger. This product connects well with the devices, and it is incredibly fast and efficient. In addition, this HP laptop adapter is great in terms of length, thick, and well-protected.

    None Same quality as the original chargers Looking for a laptop charger that is compatible with a lot of brands aside from HP? This must be the one you are looking for! It works with different laptop brands with just one laptop power cord.

    More importantly, this adapter is designed with 2 USB ports which you can use to charge 2 devices at the same time. Whether it is a laptop, a tablet, or a phone, you can rely on this universal charger. Furthermore, this HP laptop charger is lightweight and portable.

    Especially, it is comfortable to be packed in a bag when you are traveling. If you are planning to buy this user-friendly laptop charger, you will receive more than just a charger. You will get a total of 12 DC tips, an AC cord, a fabric bag, and a 2 years warranty for your product as well.

    On top of these, this laptop replacement is equipped with a self-adjust current that prevents the main issues such as overcharging, overheating, and overvoltage. If you are in need of high-quality HP laptop chargers that are sold at a reasonable price, then this is one of the best choices we've found for you. This 65W HP laptop adapter has a voltage input of 100-240V 50-60HZ and supports 19.5V 3.33A of DC output.

    It is a laptop charger that works efficiently and has great functionality for certain HP laptops such as HP EliteBook, HP Folio, and HP ProBook. Just like other HP laptop adapter, this one also comes with a power supply cord that works best for charging your devices. Moreover, this laptop unit functions very well just like the original factory unit, so you do not need to worry if it's going to be long-lasting or not.

    Grab this premium and good-quality high-tech unit now for the best customer service and a 12-month warranty for your product. IEFUU established another HP laptop chargers but this one is a 45W laptop adapter. It produces an output of 19.5V 2.31A and supports an AC input of 100-240V 50-60HZ.

    As the name stated, this HP laptop adapter is compatible with HP Stream 11 13 14 Series. Although this is a 45W laptop charger, it is also known for good quality and performance in charging your device quickly and effectively. More than that, not only does this charger work with HP laptops, but it can also charge tablets as well.

    Moreover, this charger is portable and durable which makes it easy for you to work indoor and outdoor. This is absolutely high-quality and user-convenient for everyone who is also looking for a laptop charger that provides the same quality just like their original units. None Works like the original one Buying Guides To Choosing Best HP Laptop Chargers in 2021 The first thing you should know when it comes to choosing the right laptop charger is the charger connection.

    Chargers do not come in the same size and charging ports. Therefore, you need to be aware that choosing a charger from the same manufacturer does not mean it will be compatible with your laptop's port. Also, you need to be clear cut in choosing a laptop charger since different models of laptops provide different charging ports.

    As a consequence of this, it is always best to go check and buy a laptop charger at physical computer stores. Doing this will help you in deciding which chargers you should invest in and not going for the wrong one. If you purchase it on online stores, ensure that you read every detail in the product description before buying one.

    The two most important things you need to check when buying a laptop adapter are the laptop's model number and wattage requirements. You can see your laptop number on the bottom or on the side of the laptop. In addition, you can look at the user manual or search the computer built-in help program for the model number.

    As for voltage requirements for laptop and adapter, this is also as essential as the model numbers. To prevent further laptop damage, consumers must check the voltage outputs that can be found in the user manual. Cost is another crucial factor that you also need to take into consideration when buying a laptop charger.

    There are original chargers from the same manufacturer and third-party chargers being sold everywhere on the market. In fact, whether you want to choose the original one or a third-party laptop adapter, it all depends on how much you are willing to pay. If you buy the replacement charger from the same company as your laptop, the quality will be good, but it is more costly than the third-party ones.

    However, there are also other third-party laptop chargers that work universally for all laptops and their quality is as good as the original chargers. All in all, be careful with the price and make sure to double-check the quality of those chargers on the market. A universal charger is the best choice if you are looking for a replacement charger for all kinds of laptops.

    It would benefit you if you've got an old laptop and you wish to use the same charger for many different devices. On the other hand, using a universal laptop charger means you will have to adjust the power according to your laptop's capacity. If the power is too low or high, it can cause harm to your laptop's battery.

    Hence, you better choose a universal laptop charger which you do not have to adjust the power. The last factor you need to think about is whether or not the replacement charger is portable and suitable for your laptop. Having a portable laptop adapter is a good idea when you are traveling around.

    But, if you are staying inside your house or working in your office, it is okay to not use a portable laptop adapter. What happens if you charge your laptops with the wrong voltage rating charger? Using a charger with the wrong voltage rating to charge your laptop can cause damage to your device.

    This happened due to high voltage. However, you can use a charger with too high a current without any issues. Also, if you use a charger with too low current might fry the power supply, but not the laptop.

    Is it OK to charge the phone with a laptop charger? Of course, yes! You can use the USB charger to plug your phone into a laptop while you plug the laptop into the laptop charger.

    The laptop charger that gives power to your laptop will convert some power to the USB voltages in order to charge your phone. This means you can charge 2 devices at the same time without having to switch from one charger to another. Is it bad to leave the laptop charging overnight?

    Actually, you can not "overcharge" a laptop's battery. But when your laptop gets to 100% and still plugged in, the charger will stop charging the battery itself. The laptop will run directly off the power cable, and there would not be any risks to your laptop battery.

    Indeed, it is true that trying to look for a laptop charger that meets your requirements is a pretty hard task. You need to take everything into account before making a decision to buy one. In fact, a laptop charger is very important for your laptop as it will affect your laptop's battery life, you and your laptop's safety, and quality.

    All things considered, this list of best HP laptop chargers does not only review some of the top-quality laptop replacement adapters but also highlights the key considerations you should think about when purchasing a new laptop charger. I genuinely hope that this article will be your best helper when you decide to buy a new laptop charger. Please always bear in mind some of the key factors of laptop chargers including charger connection, cost, compatibility, and portability.

    Hopefully, after reading this useful article, you will be able to understand more about laptop chargers and find at least one HP laptop adapter that suits your needs and expectations.

  • How to Convert a Laptop Keyboard for Use on a Desktop?

    Convert Laptop Keyboard To Usb

  • Spilled Juice on Laptop Keyboard. and now Its Sticky.?

    Laptop Keyboard Sticky

  • How Much Does It Cost to Repair a Laptop Keyboard? Or Just One Single Key?

    i suggest you buy a new laptop keyboard. as i know. the price is lower than before for laptop keyboard.

    and new one has a warranty for you

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FAQ
How to Fix This Problem with IPhone4s, Got Blue Dark Display Screen with Black Lines?
How to Fix This Problem with IPhone4s, Got Blue Dark Display Screen with Black Lines?
Get a Samsung mobile -__-1. Maytag Gemini Oven, the LOC on the bottom oven is on and the display screen shows F9-5, a?Maytag Oven F92. HDMI to DVI connection from PS3 to Monitor, no display on screen?I think you just have to reset the PS3 video settings. Just hold the on button till it double beeps. I think that will work3. My display screen on my IBM thinkpad stopped working?there is a thank you to coach off hibernation. there's a putting which you grants it a particular time to bypass into hibernation or turn it off altogether. look under the settings4. Can i view the display screen of a mobile phone in a normal Lcd monitor?dats not possible according to me5. Suggest a mobile with bluetooth and big display screen?I prefer the itouch from apple.But the stereo sucks.Anyway the effects are cool too.You should have one6. Whirlpool Model. 25RID4 freezer/refrigerator problem. Display screen lights all on and flickering.?The missing lines you are talking about are called segments. They are built into the display unit and the whole display will have to be replaced7. My Dell Inspiron Mini Laptop screen won't scale the size of the display screen?I even have the comparable computing device and it states decrease than the coverage declare : "this guarantee would not follow and,at dell's option ,turns into void if the product has been bodily broken or rendered defected (a) as a consequence of twist of destiny,misuse,or abuse,or the different situations previous dell's administration"(the record is going on and on yet you get the gist) if the computing device grow to be shipped you are able to say it grow to be broken once you open it determine you sparkling the no longer easychronic of any of your artwork tho8. Best mobile workstations 2020: the most powerful laptops for businessesThe most effective cell workstations blend the portability of a laptop with the uncooked electric power of a desktop Computer system. On prime of being the , they are also able of dealing with intense responsibilities these kinds of as video clip modifying and rendering. Now that processors and graphics playing cards are getting lesser and slimmer, we are now getting extra potent portables with thinner and extra portable types. This implies that several of the most effective cell workstations can be thinner and lighter than ever without having compromising on functionality or build quality. On the other hand, all that also will come at a price, which is why it is so critical to thoroughly pick out the most effective cell workstation for your desires.Sound, trustworthy and potent, the most effective cell workstations must also be long term evidence and can assistance you with your perform for several years to arrive without having forcing you to blow your price range. Many thanks to our value comparison instrument, we can assistance just take the sting out of the value tag by helping you come across the very most effective rates for these fantastic cell workstations. If you would choose a , or if you are interested in a that is not automatically a workstation, we have obtained you coated as effectively. As thin, light-weight and sleek as ever, the MacBook Pro (sixteen-inch, 2019) does not truly come to feel like a sixteen-inch behemoth. This laptop will come to feel just as compact as the 15-inch MacBook Professionals that preceded it and maybe extra than any other sixteen-inch laptops out there.Although it is a behemoth when it will come to electric power. Touting a ninth-generation Intel Main processor and an AMD Radeon Pro 5300M or 5500M graphics card, as effectively as up to 64GB of memory, there's nothing this cell workstation cannot do. And, without having a doubt, it will get by all your intense workflow without having breaking a sweat. If that is not enough, it also has outstanding speakers for all your entertainment desires, and a substantially improved keyboard so you can variety all day without having fatiguing. Read through the whole critique: Apple's most potent laptop ever is also the most effective workstation laptop in 2018. It attributes up to 32GB of RAM and a tremendous-quickly stable point out tricky generate, and will come with Intel's latest and most potent processors.You can configure the MacBook Pro 2018 to match your desires and price range, and it all will come in Apple's trademark gorgeous design and style. If you are searching for the most effective cell workstation that brings together design and style and electric power, then this is a brilliant alternative. As long as you have the price range. Read through the whole critique: Though the common Razer Blade laptop is famously a gaming laptop - a person of the most effective, in actuality, Razer has taken its sheer electric power and turned the entire factor into a person of the most effective cell workstations for creatives. There is zero doubt that this laptop was designed with photographers, video clip editors and even video game designers in intellect, as it rocks potent graphics playing cards and a gorgeous, manufacturing unit-calibrated 4K display screen.Not not like its gaming counterpart, you are going to be paying out a quite penny, specifically for its souped up configuration with the Quadro RTX 5000 graphics card. On the other hand, if a quickly and seamless workflow is of utmost relevance in your day to day, this laptop undoubtedly pays for alone. Read through the whole critique: HP's cell workstation Ultrabook has by now arrived at its 3rd generation but the previous a person is nevertheless very substantially a most effective-in-course specifically when it will come to sheer price for revenue. It is a person of the least expensive workstations on the current market to provide a skilled devoted graphics card, and the most cost-effective business laptop to arrive with a whopping 50 %-10 years guarantee. HP opted for a 14-inch diagonal which may perhaps effectively hit a sweet spot for some.Read through the whole critique: HP ZBook 14 G2 Battery daily life is not the most effective HP calls it the best blend of brains and elegance and it is variety of tricky to disagree. The G3 is basically a cell workstation that has been squeezed in an Ultrabook sort aspect. A 4K check adorns it and you will find a lot of oomph underneath the hood. It is truly the only gadget regarded to us that will come with a Xeon CPU. Include in intensive ISV certification, a tremendous-long guarantee and MLD-STD 810G certification and you have a very desirable applicant. Read through the whole critique: HP ZBook Studio G3 Color scheme may possibly not be to everyone's flavor Irrespective of being just over 10mm thick and weighing just over one.16Kg, the HP Spectre Pro 13 G1 manages to pack a suitable Main i7 CPU with a whole Hd 13.3-inch display screen, a enormous four-mobile 38Whr battery and a few USB Variety C connectors.This can make it a formidable cell workstation that delivers a lot of electric power for even the most demanding of responsibilities. If you want a laptop that delivers similar functionality to your perform desktop Computer system, then this brilliant equipment is unquestionably worthy of thinking of. Its 3 Year Next Small business Day onsite guarantee also implies if something goes mistaken with the gadget, you can immediately get it preset without having lacking out on perform. Lenovo hails this product as the world's first multi-mode workstation, a person that manages to blend electric power and creative imagination thanks to a 360-degree hinge that has, to some extent, set the regular when it will come to convertible or 2-in-one types. What is extra, it is a person of the very rare laptops to arrive with built-in Wacom Energetic ES pen engineering, able of offering 2048 degrees of pen pressure sensitivity and tilt recognition.As with most of Dell's laptops you can configure the Precision 7720 to meet up with your desires, which can make it a person of the most effective workstation laptops in the planet. By boosting the processor, display screen and GPU of this laptop (in comparison to its foundation product) you may get an fantastic laptop for weighty-responsibility perform. The seventeen-inch display screen (which can be upgraded to 4K), is brilliant for picture and video clip modifying, but it does mean that it truly is a bit much larger and heavier than other equipment in this checklist. It is also expensive, specifically if you configure it with the latest parts, but it continues to be a brilliant The ThinkPad T-collection is a no-nonsense design and style with a focus on robustness over style. Even so, the T460s' eighteen.8mm thickness is in 1mm of the MacBook, and it truly is truly lighter at one.4kg. It is not as potent as some of the workstation laptops in this checklist, but it truly is not as expensive possibly, which can make it a excellent alternative if you are searching for an attained workstation laptop for fewer hardcore workloads, even though also holding to a price range.Read through the whole critique: Lenovo ThinkPad T460s.
Analysis of System Composition and Architecture of LED Display Screen
Analysis of System Composition and Architecture of LED Display Screen
As a high-tech product, LED display has attracted great attention. The intelligent full-color display, which is controlled by computer and integrates light and electricity, has been applied in a wide range of fields. The pixel points adopt LED light-emitting diodes, and many light-emitting diodes are arranged in a dot matrix to form an LED array and then an LED screen. Through different LED driving modes, images with different effects can be obtained. Therefore, the advantages and disadvantages of LED driver chip play an important role in the display quality of LED display screen. LED driver chips can be divided into general chips and special chips.General purpose chips are generally used for low-end products of LED display screens, such as indoor single and dual color screens. The most commonly used general chip is 74HC595, which has the functions of 8-bit latch, serial shift register and three state output. Each channel can output 35mA non constant current at most.Because LED is a current characteristic device, that is, on the premise of saturated conduction, its brightness changes with the change of current, not with the change of voltage at both ends. The biggest feature of the special chip is to provide constant current source output, ensure the stable driving of LED and eliminate the flicker of LED. With the characteristics of high output current and constant current, it is suitable for occasions requiring high current and high image quality, such as outdoor full-color screen, indoor full-color screen, etc.LED driver chip series products for LED display smt5026.smt5026 has built-in CMOS shift register and latch function, which can convert serial input data into parallel output data format.Part II: system architecture of LED display screen(1) Display unitThis is the main part of the LED display screen, which is composed of luminous materials and driving circuits. The indoor screen is the unit display board of various specifications, and the outdoor screen is the unit box.(2) Main controllerThe function is to buffer, transform and reorganize the input RGB digital video signal, and generate various control signals.(3) Switching power supplyThe purpose is to change 220V AC into various DC to supply various circuits.(4) Transmission cableThe display data and various control signals generated by the main controller are transmitted to the screen body by twisted pair cable.(5) Scan controllerThe function of the circuit board is to buffer data and generate various scanning signals and duty cycle gray control signals.(6) Special display card and multimedia card (video card)In addition to the basic functions of the computer display card, the LED full-color display card also outputs digital RGB signals, line, field, blanking and other signals to the main controller. In addition to the above functions, the multimedia card can also change the input analog video signal into digital RGB signal (i.e. video acquisition).(7) Other signal sources and their external devices
Illustration of Replacing Laptop Screen
Illustration of Replacing Laptop Screen
Step 1: pull out the screwFirst turn the laptop over, and then remove the battery and the side of the laptop screen (remember to also open the screws hidden under the battery)Then, you will remove the keyboard screw that is usually located in the middle of the laptop (usually displays a keypad image) close to it to make your work easier)The last thing we have to do is disconnect the wire of the wireless antenna.On the HP dv9000 series, the wireless network card and memory are kept on the same plate, which gives us more space and makes us very easy.Find out which board hides your wireless card (it's harmless to open it all and view the contents below them in any way, because it's a learning experience)Once you find the network card and antenna wire with black, it winds out. Please note which wires go to which side of the card (I'm not sure of the importance of reconnecting them correctly, because they are only cut wires, and they won't close any circuits, but plug them back and attach things in the right way for the first time, ha ha)OK, now you can go to the top of the laptop.Step 2: remove the speaker frame and the annoying plastic cutting step.OK, so with the computer turned off and the battery removed from the device, press and hold the power button for 20 to 30 seconds to eliminate the remaining power. Capacitor, and then use a flat screwdriver to remove the speaker bezel from the device.Take your time, you won't break any plastic clips. We really want this unit to return together when it is finished.Step 3: screen screws and wiresOnce you remove the speaker bezel, you will see a (in my case) total of 6 wires protruding from the bottom of the screen into the laptop.From left to rightVideo cable, (cable for controlling all aspects of color and brightness such as LCD, backlight, etc.)The next step will be two thin lines that control the webcam on this displayOn the right side of the screen, you already have a wireless antenna cable and a webcam controller cable, and your replacement screen should already contain all of these.So just disconnect the laptop cable and connect it to the screen.If you don't care about these wires on the new screen, the screen may be wrong or the model may be small.You can consider taking the laptop screen apart and placing it horizontally (unfortunately, this may be troublesome, but it must be feasible).But go back to it, continue and pull out 2-3 or connect the 4 screws to the hinge of the laptop screen so that it can be gently lifted from the laptop.Now move the monitor away (but still tied to the laptop through the antenna cable)We can remove the keyboard, at the top of the keyboard, you will notice that the screws on the top of the 3 to 5 keyboards pull them forward and keep them apart(they will be different colors, so it's hard to keep them apart, but if you separate the screws in some way, it will make things easier), then gently lift the keyboard and pull it up (towards the screen), then tilt the keyboard so that you can see below it, and disconnect the cable connecting the keyboard to the laptop.Do not use this cable roughly. If you disconnect the keyboard cable when trying to fix the laptop screen, it will only cause problems and more money You may feel depressed in the whole room, = O ha ha, I don't want that.Step 4: serpentine antennaAfter unplugging the keyboard, the first thing to pay attention to is the of the wireless antenna(the only reason is to go so deep), so move on, release the wires from their small tracks and clips, and gently bend the end of the antenna into a line so that they can connect to the wireless network card at the bottom of the laptopRemember, if your wireless card has any unexpected twist or hook, how it will wind through, because you will need to reinsert the new antenna cable in one second.Step 5: throw it back.Once you release them, please continue and move your screen. It is broken and far away, but don't discard it in the future. The components on it may still be useful.Then grab your new monitor and start bending the wireless antenna lead back and locking it in place.Put the keyboard back in place and don't forget to reconnect the wires under the keyboard.Screw it back in place.(this is where we started to calculate the screws. We don't want to leave any screws. I hope you can remember their whereabouts well)Reconnect the video, microphone and camera wires to the laptop, and then screw the hinge of the laptop back to the laptop.Grasp the bezel of the laptop, fix it back in place, and then close the laptop,Turn it over and start replacing all the screws. Is there any left? Congratulations on winning!Slide the battery back into place (if not, connect the wireless antenna cable, just press it back into the slot). That's all. It's done. Open the suction cup again to see if you were cheated and bought another broken screen, or if you forgot to connect the wire correctly = P ha haIf it works properly, it means that you have successfully patted your back and waited for something. Otherwise, please break it so that you can regain new confidence and repair her = D
With the Rapid Development of Mobile Internet, the Production Qualification Rate of Display Screen I
With the Rapid Development of Mobile Internet, the Production Qualification Rate of Display Screen I
XXX backlight panel manufacturing factoryWith the rapid development of mobile Internet, the software and hardware technology of smart phones have been rapidly improved. At the same time, the price is also developing in the direction of more and more civilians, which makes the development of smart phones in China more and more diversified and the scope of application more and more comprehensive, and plays an extremely important role in people's intelligent life.Mobile phone display screen is an important part of smart phone. The production qualification rate of display screen and the production quality of mobile phone play a very important role in the popularization of mobile phone. Unqualified mark line will lead to product display problems. The traditional mark detection is an artificial naked eye detection method. There is a phenomenon that the detection change range is too large due to the instability of the artificial naked eye, which leads to the problems of inaccurate detection and low efficiency.At present, many types of work requiring precise calculation have been replaced by automation equipment, and the visual inspection of backlight is no exception. Follow the Xiaobian:What problems can be solved?It mainly detects the mark line of the mobile phone backlight, including:Number of mark lines (excessive and missing);Mark line length, accuracy plus or minus 0.1mm;The distance from the mark line to the specified frame, with an accuracy of plus or minus 0.1mm;Camera assemblyDetection processTest effectTake two stations as an exampleTest conclusionFrom the early sample test results, the software can accurately detect the edge of each sample and the mark line on the product, and accurately calculate the length of each mark line, the distance between each mark line and the edge and the number of mark lines. The specific indicators are as follows:(1) Detection accuracy: 0.1mm (compared with the actual product, it is related to the marking and filling method, appearance and measurement benchmark, and there will be corresponding fluctuations)(2) Detection efficiency: it varies according to the number of mark lines, 20 for each piece, and the detection time is within 0.5s;(3) Product model: support multiple models of the same material, with the maximum size of 80 * 160mm.(4) Mark line color: white and black. The detection parameters need to be adjusted.
How to Make My Computer Display the Screen Full Size?
How to Make My Computer Display the Screen Full Size?
adjust your screen resolution... if you had adjust it to high and still the same.. get a video card the has a highest resolution.1. ???...My laptop display screen needs cleaning...???there are products available at computer stores, but they mostly are composed of alcohol and other agents, you can safely use Windex and a soft clothes to wipe the screen depending if its glossy or matt, be careful to not scratch the surface with a hard or coarse clothe. spray on the cloth and then wipe, if there are sticky smudge then try to get more windex on it but becaureful you dont get any inside the screen bezel.2. Utility to display on screen the currently pressed keysQiPress seems to work for me.There is a lite and a pro version at $30. The lite version is enough for my needs3. Laptop display screen won't light up?the only way that i comprehend to tell for specific if it is the backlight or inverter is to plug a regular solid backlight into the inverter. If it lights then it is the backlight, if no longer it is the inverter. The inverter is a miles less costly, ordinary restoration or it is going to be besides. The backlight section is way less costly yet is complicated (study high priced) to interchange except you pick to aim it your self. It frequently is not the two4. Why do we call a computer or TV display a "screen?I discovered a very helpful passage from the book, The Oxford Handbook of Management Information Systems: Critical Perspectives and New Directions(link takes you to the passage)The author notes that the word "screen" originates from the 14th century, andevolved from the Middle English word serene, from the Middle French escren, and from the Middle Dutch scherm. It is a word akin to the Old High German (eighth century) words skirm, which meant shield, and skrank, which meant a barrier of some kind. The word screen also suggests another interesting signification, further away from us in history. It is a word 'probably akin' (MW) to the Sanskrit (1000 BC)" words carman, which meant 'skin', and kn'z'nti, which signifies 'he injures' (MW). These are possible meanings from which the Middle Age words evolved. The Sanskrit clue suggests that the notions of protection, shield, barrier, separation arose, possibly within the older Proto-Indo-European language, as metaphors of the concept of skin-possibly that of human (or animal) skin.So there is a lot to do with protection and barrier which run through the evolution of the word. The author goes on to describe the chronological relations between the words:A barrier or a protection is something raised over and against another something. This 'other' something faces the barrier, as the wind faces the windscreen of a car, which means that the screen protects against something, to be excluded, that moves towards it. That which is moving towards the screen could have been understood as a projection (from the Latin word projectare, which meant 'to throw forward') over a surface-just like the arrows and bullets were projected over the shields, or like the heat is projected onto the fireplace screen. The screen protects and shelters (just as a skin. . . ) because it receives and holds the projection of that which is not to be received 'inside' the cover that the screen provides. But what happens when something stopped by the screen is allowed to pass through? The answer is that it was screened. This means that it was permitted to pass through that barrier, or that it simply passed through it. The screen as a barrier is now understood as a 'system for detecting [for example] disease, ability, attribute' (OPDT 1997: 681-2). This interpretation links, or so we hope, the three central themes of meaning attached to the word screen: hiding/protecting, projecting/showing, and testing/selecting (ibid.).The author goes on to argue that these three themes all have a central intent - a demand for our attention. They provide this table to help show this. P.270I think that should pretty much answer the question. The author has other interesting things to say on the word as well, and explains the phenomenology of the word and relates it to concepts like "the truth in seeing". Interesting stuff!
Aventk UV Color Changing Black Glue 1098 Can Effectively Solve the Reflection Problem of OLED Displa
Aventk UV Color Changing Black Glue 1098 Can Effectively Solve the Reflection Problem of OLED Displa
Reflective problem of OLED display The core of OLED is a transparent organic semiconductor polymer, which can be made into a thin film and emit light by applying an electric field on both sides. Because the structure of OLED panel is very simple in theory, very thin products can be made. At present, the thickness of OLED display screen in mass production is only 0.95mm. Although OLED display is a self luminous product, after removing the backlight, there should be no problem of backlight leakage in theory. However, in terms of actual products, due to the existence of MF coating, there is still a problem of reflection around the edges of the display screen, as shown in the following figure:Therefore, how to solve the reflective problem of OLED display has become a concern of many manufacturers. In this regard, aventk has also studied and tested for many times, and finally determined that aventk 1098 series UV color changing black glue can solve this problem. Aventk UV color changing black glue 1098 can solve the problem. In solving the reflection problem of OLED display screen, most of them used UV black glue before. However, UV black glue needs to take into account UV light irradiation, so the blackness cannot be too deep, otherwise UV light cannot irradiate the cured glue. However, if UV glue black is not enough, it can not achieve good light blocking effect.To solve this problem, aventk 1098 series UV color changing black glue can be solved. Aventk UV color changing black glue contains aventk's exclusive NYX technology. NYX technology is aventk's unique UV light dyeing technology, which perfectly combines UV light with glue dyeing. It is a transparent color before UV curing and can well absorb UV light. After UV curing, it becomes black (or other colors). It not only meets the high efficiency of UV light curing, but also quickly completes the dyeing of glue. Put aventk UV color changing black glue is applied around the OLED display screen and between the screen and pol, which can greatly reduce the problem of reflection. fqj
LED Display Screen Enterprises to Enter the Field of 'price' -Information Industry News
LED Display Screen Enterprises to Enter the Field of 'price' -Information Industry News
Explore what your device can do and how to use it. Always On Display allows you to view the clock, battery and missed phone call/message notifications when the screen is turned off. The Always On Display screen uses less power and also utilizes the proximity sensor to turn off completely when in a purse or pocket. The user can change what appears on the Always On Display screen. Back up and sync your contacts, photos, videos, and more from your device. Bixby Vision gives you a deeper understanding of what you are looking at through your camera by identifying landmarks, translating languages, or showing you where to buy an item. Watch, search, and record your favorite movies and shows, and turn your device into your remote control, with the DIRECTV app on your phone. All of HBO together with new hits, classic favorites, plus new Max Originals. Hello Bixby allows you to quickly set reminders, create voice dictation, search and access content on your phone and on the internet. The Multi Window feature provides split-screen functionality, which allows you to use two applications at the same time. Complete multiple tasks on one screen, take notes while watching a video, or search the web and check your email messages simultaneously. View and pay your AT&T bills online, manage your account, reset passwords, or upgrade your AT&T services.Learn how to find your device and secure your info. Free apps typically get revenue through ads, pop-ups, or notifications. Learn how to manage these on your device. Find My Mobile allows you to manage your device in a secure way by tracking and controlling your device remotely. Secure your personal content and keep it hidden on your device. Lock or unlock your display, set a screen security lock type (pin, password, pattern, fingerprints, or iris and face recognition), get your PUK code, or request your device be unlocked from the ATnT network. Learn how to determine if you might have harmful software (malware) on your device and get tips to help fix the issue.Given current technology, could TV display screens double as video camera sensors?Yes, with interferometry based synthetic aperture imagery, but...It would take several orders of magnitude improvement in digital signal processing technology for it to work at the scale of a video screen. The sensors will need to record at a very high data rate, on the order of petahertz. Every single pixel will be receiving all of the light that is in its field of view, and none of the light will be focused. Fortunately, light is not just photons, it's also electromagnetic waves. The sensors will behave like antennas, rather than eyes, passively collecting the radio waves at the wavelength of visible light.Radio signal sources can be tracked quite easily, by measuring the timing of a wave reaching multiple antennas. The same applies to all sorts of waves; an earthquake's epicenter is calculated by measuring the timing when the waves arrive at seismometers. We even have the same types of sensors built into our own human bodies. : Our ears can taking a wave and determine the direction that it came from, based on changes of intensity and timing. We have already proven the concept using vast antenna arrays to collect unfocused photons, to create a focused image. We imaged the supermassive black hole M87* using the Event Horizon Telescope.Of course, when astronomers use the term "photon" they do not just mean visible light; they mean any coherent electromagnetic wave. This image represents the peak of current engineering feasibility for synthetic aperture imagery. The EHT uses a Very Long Baseline Interferometry, which works in 450 GHz, using very narrowly calibrated equipment designed specifically to tease out the glow of the accretion disk at the wavelengths to detect event horizons around black holes. In order to get meaningful data, though, your sample rate needs to be at least twice the frequency of the signal rate, preferably more than 4 times the signal rate, or you start getting downsampling errors called aliasing. In order to record visible light, which has frequencies between 405 THz to 790 THz, you will need a sample rate that is at least 1.58 PHz.Due to limitations from the speed of light, and the time that it takes electrons to pass through silicon and copper in computers, this is just past the fastest speed that we can record data meaningfully.We would have to pass the data from several sensors in order to build up a meaningful synthetic aperture image from interferometry. We would need specialized recording technology that we just do not have yet.And, there's also the problem that LEDs are not designed to collect light, even though they are capable of doing it. .. just as sound coming out of a microphone would sound terrible, and sound recorded from speakers is also low quality. It would take several generations of iterating on the current science in order to use an LED-based computer monitor to record what is happening it a room, and it will always require specialized systems to just record the data in a meaningful way, much less process it into an image. It took several petabytes of data and 3 years of processing in order to build the EHT's image of M87*. It was faster to hand-carry the hard drives from the telescopes around the world to the datacenter, than it would have been to send the data over high speed internet links. It would take a lot of iterative work to miniaturize the chips necessary to do the calculations, but the technology just barely exists.Such a screen would be prohibitively expensive, as it's much easier to just put a lense in front of a cluster of photodiodes (i. e. , a webcam) and hide that in the corner of the screen, but those leave physical evidence... you can see the lense if you take the screen apart. It could be possible, with non-digital interferometry, to construct such an image of the room in real time. .. but that equipment barely fits in the basements of large telescope observatories, and requires cryogenic cooling. You would not be able to collect it clandestinely, and would be much cheaper (and higher quality) to use a webcam.
What Are the Components of LED Display_ Application Method of LED Display Screen
What Are the Components of LED Display_ Application Method of LED Display Screen
What are the components of LED displayLED display is a flat panel display, which is composed of small LED module panels. It is used to display text, image, video, video signal and other information. The components are as follows:1 LED unit board: it is one of the core components of LED display. The quality of the unit board directly affects the display effect of the display screen. The unit board is composed of LED module, driver chip and PCB circuit board. The LED module is actually composed of many LED light emitting points encapsulated in resin or plastic lattice.2 Connection: it can be divided into data line, transmission line and power line. The data cable is a flat cable used to connect the control card and the LED unit board. The transmission line is used to connect the control card and the computer. The power cord is used to connect the power supply, control card and LED unit board. The copper core diameter of the power cord connecting the unit board shall not be less than 1mm.3 Power supply: the power supply generally uses switching power supply, 220V input and 5V DC output. It should be pointed out that because the LED display screen belongs to precision electronic equipment, switching power supply should be used instead of transformer.4 Control card: we recommend using a low-cost strip screen control card, which can control a 1 / 16 scanned 256x16 point two-color screen and assemble the most cost-effective LED screen. The control card belongs to asynchronous card, that is, the card can save information without power off, and the information stored in it can be displayed without connecting to PC.Application method of LED display screenLED display screen can help a unit to show what they want to say and release some announcements and information, so as to facilitate visitors to understand some basic information of the unit.1. First of all, our equipment has been debugged normally. Turn on the power switch first.2. Open the icon on the computer and enter the operation page, as shown in the figure3. Turn on the switch of LED display screen, as shown in the figure4. Turn on the audio5. The following is the renderingsWonderful reading recommendations:Application place of LED display screen_ Development status and trend of LED displayScanning mode and principle of LED display screen_ What does the P of LED display stand forWhat is the power consumption of LED display_ How to connect LED display screen with mobile phoneHow to change words with U disk for LED display screen_ Steps of importing subtitles with U disk for LEDHow long is the service life of LED display_ Six daily maintenance of LED display
What Aspects Should Be Considered When Selecting LED Display Screen
What Aspects Should Be Considered When Selecting LED Display Screen
Indoor LED screen is favored by advertisers in large hotels and supermarkets because of its good display effect and visual feeling. So what should we pay attention to in the selection of LED display in hotel banquet hall?Generally, in the indoor environment, the screen area will exceed 3 m2. Therefore, in this case, there are three options: ordinary rear projection, DLP (digital liquid crystal rear projection) and LED display.The advantages of ordinary rear projection display screen are small pixels and high definition. The disadvantages are low brightness, small viewing angle and short lens lamp life (only a few thousand hours). DLP has the advantages of small pixel points and high definition. The disadvantage is that it has seam. At present, the minimum seam can reach 1mm. Rear projection and plasma display screens are suitable for close viewing. For indoor LED display, the advantages are high brightness and no seam, while the disadvantages are coarse pixel particles and low definition. At present, the economic model of commercialized indoor full-color LED screen is p5p6, and other models include p3p4p7.62p8. LED display screen is suitable for indoor places with long viewing distance.When selecting LED display in banquet hall, the following aspects can be considered:1 die. Like the outdoor full-color LED screen, it is generally recommended that the LED of the indoor full-color display screen adopt the LED encapsulated by Maipu brilliance, and the tube cores of Japan Riya and Cree of the United States are recommended for high-end products.2. Packaging form. The 3528211010 surface mount package has the advantages of large viewing angle, good luminous consistency and easy automatic welding processing. It is the mainstream product of full-color screen.3 density. Due to the large heating capacity of indoor full-color LED chip and high density of control circuit, the point density of commercial full-color screen can not be very high. The screen models in lianchengfa room include p1.6p22.5p3p4p5, P6, p7.62, P8, etc.4. Driving mode. The driving mode of Maipu Guangcai indoor full-color LED screen is constant current driving and adopts dynamic scanning mode (mainly 1 / 4, 1 / 81 / 16 and other scanning modes).5 refresh rate. Improve the refresh rate, and there is no flicker and tailing when shooting with the camera.Other considerations include the scale and brand, price, purpose, installation location and environment of LED display manufacturers. The above are some suggestions on the selection of LED display in hotel banquet hall.fqj
Application and Technical Index of LED Full Color Display Screen
Application and Technical Index of LED Full Color Display Screen
Since this year, the market demand for LED full-color large screen has shown a rapid upward trend. Just after the Spring Festival, large projects began bidding. In April and may, despite the impact of SARS, it only delayed the implementation plan, not cancelled the project. After SARS, many projects have been stepped up. The contract amount of major LED large screen manufacturers increased by 20% compared with the same period last year, and some even almost doubled compared with last year. There are many new companies entering the field of full-color large screen, and their achievements are also excellent. Compared with previous years, the market sprouted early this year, with many large projects, and more than a dozen projects with more than 10 million yuan have been implemented. In the third quarter, many major projects entered the bidding stage. Another feature is the significant increase in projects invested by enterprises, including applications in commercial advertising. It can be said that led large screen, as a commercial advertising media, has been favored by the advertising industry again after nearly ten years of silence. At the same time, the export situation of full-color screens is also encouraging. In early September, the annual optical Expo was held in Shenzhen. This exhibition is a big exhibition of LED industry in the past year. LED large screen, LED lighting, LED traffic lights, LED production equipment, testing equipment and other dazzling, indicating that the new climax of China's LED industry has come. The author believes that this exhibition is a sign that China's LED industry has reached a turning point of localization. Internationally renowned LED light-emitting tube manufacturers and screen manufacturers have also begun to transfer to mainland China on a large scale. Mainland China will become the manufacturer of LED and its productsManufacturing center. Broad market, good investment environment and low labor cost make China gradually become the manufacturing center of the world's electronic industry. Just like computers, mobile phones, televisions and other electronic products, China is also the manufacturing center of LED large screen industry.As a scientific and technological worker who has been engaged in the research and development of LED large screen for a long time, the author has always paid attention to the development of LED large screen in China and the new achievements of international large screen display industry. Three years ago, in the article on the development of LED large screen, the author talked about several application fields and characteristics of LED large screen in China, and proposed that full-color large screen is mainly an image project in China. It should be said that this general pattern has not changed, but the increasing demand for commercial advertising is also a very important development trend. It can be said that China's LED full-color large screen industry is ushering in a new climax. Seriously studying the new situation of market development and technological progress, taking correct countermeasures, seizing opportunities, rapid improvement and sustainable development should be worthy of study by peers. Here, I venture to raise questions about technical indicators and hope that peers and experts will correct me.Image engineering: Aiming at the international first-class level. Image engineering means that the main purpose of building a large screen is to add style to the city or a major event. It does not directly create economic benefits, but it can enhance the city's popularity, shape the city's image, improve the investment environment and create a business atmosphere, which is conducive to economic development and good social benefits, so as to indirectly create economic benefits. Image engineering is mainly government investment, focusing on social benefits, rather than or mainly obtaining economic benefits through commercial operation. In recent years, the large LED screen of large squares in urban central areas or citizen leisure squares built in many parts of the country is a typical image project. A large number of LED displays in stadiums and gymnasiums are necessary supporting facilities for modern stadiums and gymnasiums, which also belong to this category.Since it is an image project, it is bound to pursue the perfect performance and effect as much as possible, especially high-quality video images. Generally speaking, it is to make a giant color TV, which has been worked hard by many domestic manufacturers for a long time, and has made considerable progress, but it is still far from our ideal goal, and there is still a big gap compared with foreign full-color large screens.At the beginning of this year, the commercial street of Hunan Road in Nanjing invested heavily in the construction of a full-color large screen with an area of 114 square meters. The screen was built by UNITEK company in the UK and has been running for more than half a year. From the effect, it can be called the best large screen in China. The author participated in the formulation of the technical indicators of the screen and the final acceptance test, and felt that many aspects were worthy of learning and imitation by domestic peers.As a large full-color screen, its key technical indicators include: high enough brightness, viewing distance and viewing angle; Good color reduction; Sufficiently high grayscale capability; High enough scan refresh rate. High enough video signal processing capability, especially good consistency, structure and technology. The technical indicators set by Hunan Road Daping during bidding are:The white balance brightness is greater than 5000 CD / m2;White balance color temperature 6500k;The number of video processing bits is greater than 10bit;The gray level of each primary color is greater than 10bit, which can display 1.07 billion colors;Refresh frequency is greater than 400Hz;The display screen has no perceptible color difference, and the color difference of each primary color of the full screen is less than 4nm;There is no perceptible brightness difference on the display screen, and the brightness difference of adjacent pixels is less than 5%. There is no perceptible mosaic when displaying monochrome gray images of red, green and blue;MTBF is greater than 5000 hours and MTTR is less than 30 minutes;Objectively speaking, not only at that time, but also today, the products of domestic manufacturers have not been fully achieved. In many cases, due to the improvement of the level of LED, the brightness of the normally designed large screen is no longer a problem and can meet the requirements. However, brightness is only an important indicator, not all. Now we generally feel that the large screen brightness of domestic manufacturers is more than enough and the softness is insufficient. The overall effect is not as good as that of foreign well-known manufacturers. The reason is that there are more technical problems that have not been solved. The author believes that from a technical point of view, it is necessary to make efforts in the following aspects.(1) Color matching and blendingThe large screen is composed of a large number of light-emitting diodes. The photoelectric parameters of the light-emitting diodes must be designed, calculated and tested in order to achieve a good white balance. Simple estimation and judgment with the naked eye can not have good results. This involves the selection and driving design of LED, which not only affects the photoelectric performance of the screen, but also affects the reliability. Especially in the design of indoor full-color screen, thermal design should be paid enough attention, otherwise the effect and reliability will be a problem.
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