How Can the LED Display Screen on the Stage Tell Whether It Is Good Or Bad

For a "layman" how to distinguish the quality of stage LED display screen, he does not fully understand the stage LED display screen. In general, it is all justified by the salesperson. Sometimes it is difficult to convince the user. In the next few days, there are several simple methods to identify the quality of full-color display screen. I hope they can be helpful when you buy full-color display screen.The quality of a stage LED display can be judged from the following aspects:1. Flatness of stage LED display screen

How Can the LED Display Screen on the Stage Tell Whether It Is Good Or Bad 1

The surface flatness of the display screen shall be within 1mm to ensure that the displayed image is not distorted. Local bulges or recesses will lead to dead corners in the visual angle of the display screen. The gap between the box and the box, and between the module and the module shall be within 1mm. If the gap is too large, it will lead to obvious boundary of the display screen and visual disharmony. The flatness is mainly determined by the production process.2. Brightness and visual angle of stage LED display

The brightness of the indoor full-color screen should be more than 800cd / m2, and the brightness of the outdoor full-color screen should be more than 5000cd / m2 to ensure the normal operation of the display screen, otherwise the displayed image will not be seen clearly because the brightness is too low. The brightness of the display screen is not the brighter the better. It should match the brightness of the LED package. Blindly increasing the current and increasing the brightness will cause the led to decrease too fast and the service life of the display screen to decline rapidly. The manufacturer can be asked to provide parameter report for confirmation. The brightness of the screen is mainly determined by the quality of the LED tube core.

Visual angle refers to the maximum included angle of the whole screen content that you can see from the two measurements of the screen. The size of the viewing angle directly determines the audience of the display screen, so the larger the better. The visual angle should be more than 150 degrees. The visual angle is mainly determined by the packaging mode of the die.Several tips to teach "laymen" how to distinguish the quality of stage LED display screen3. White balance effect of stage LED display

White balance effect is one of the most important indicators of display screen. In terms of chromatics, pure white will be displayed only when the ratio of red, green and blue primary colors is 1:4.6:0.16. If there is a deviation in the actual ratio, there will be a deviation in the white balance. Generally, pay attention to whether white is blue or yellow green. In monochrome, the smaller the brightness difference and wavelength difference between LEDs, the better. Standing on the side of the screen, there is no color difference or color deviation, and the consistency is better. The white balance is mainly determined by the brightness wavelength ratio of LED die and the control system of display screen. The die also has an impact on the color restoration.

How Can the LED Display Screen on the Stage Tell Whether It Is Good Or Bad 2

4. Color restoration of stage LED displayColor reduction refers to the color reduction of the display screen, that is, the color displayed on the display screen should be highly consistent with the color of the playback source, so as to ensure the authenticity of the image.5 stage LED display screen, dead center phenomenon

Mosaic refers to the small four squares that are often bright or black on the display screen, which is the phenomenon of module necrosis. The main reason is that the quality of IC or connector used in the display screen is not up to standard. Dead point refers to a single point that is always bright or dark on the display screen. The number of dead points is mainly determined by the quality of the tube core and whether the anti-static measures of the manufacturer are perfect.6. Is there any color block on the stage LED displayColor block refers to the obvious color difference between adjacent modules. The color transition is based on the module. The color block phenomenon is mainly caused by poor control system, low gray level and low scanning frequency.

7. Stability of stage LED displayStability refers to the reliable quality of stage LED display screen in the aging stage after it is made into a finished product. The aging record can be obtained from the manufacturer to determine the condition of the screen during aging.8. Security of stage LED display screen

The stage LED display screen is composed of multiple boxes. Each box must be provided with external grounding protection, and the grounding resistance shall be less than 0. 1 euro. And it can withstand high voltage without breakdown at 1500V for 1min. Warning signs and slogans shall be provided at the high-voltage input terminal and the high-voltage wiring of the power supply.9. Packaging and transportation of stage LED display screenThe stage LED display screen belongs to valuable goods, which is very heavy. The packaging method used by the manufacturer is very important. Generally, the box is packed as a single box. There must be protective objects on all sides of the box for cushioning. The internal activity space of the box during transportation is small. The outer packing box must be clearly marked.

Source: Shenzhen Yunhai Photoelectric Technology Co., Ltd

GET IN TOUCH WITH Us
recommended articles
FAQ
The Application and Effect of the LED Display Screen
The Application and Effect of the LED Display Screen
Quite a few technological cynics would say it really is these kinds of a waste of money to buy iPod touch 32GB. Blame it on the absence of initial-hand details and ignorance on the subject and on the gadget. What they never know is how useful this gadget is in every day things to do.Reality is, the iPod touch is among the couple of devices that don't appear and go. It is really not a little something that you will just throw absent in the bin and get bored with effortlessly. That stated, let's take a appear at the positive aspects an individual gets from acquiring the gadget.1. The storage and memory potential is large. To begin with, the storage potential is 32GB, and second, it has an integrated memory flash for supplemental capability. When it comes to storage and memory purposes, it can serve you properly for keeping several music files, movies, photographs, and video games as significantly as you want-just about like your particular laptop or computer turned into a helpful 1.2. It is Wi-Fi able, which signifies you can surf the web as nicely. Therefore, there is no need to have to often be managing to your own computer to surf and look at your mails or favored movies. Not only that, you can as properly use this gadget for investigation functions, thanks to its Wi-Fi capability which aids you connect anyplace at anytime.three. The stereo sound good quality is superior, distinct, and dependable, in contrast to those common transportable disc gamers that may perhaps put on out in time. It has a developed-in equalizer that enhances the superior and stability of the sound, removing also a lot noise.four. The iPod touch is also fairly like your digital camera the place you can store your digital images in different specifications and continue to keep its substantial excellent, and considerably like your video clip recorder that supports different digital video criteria, also.5. Very last but not the least, it presents unique headphone styles for ease of use.Having said that, of course, in every single technological creation, there are always one or two characteristics that you, as a purchaser, might not like. That's regular. For an individual, due to the fact it really is designed helpful, the tiny display keyboard may well be considered a bane for some gadget freaks who want significant keyboards or display screen that is. Utilize prevalent perception though: If you want a even bigger screen or keyboard, go get a mini-laptop or computer system, not an iPod touch. The modest display screen and keyboard was a principle to make the gadget useful to use at any time, anywhere, not having sensation the bulk of carrying or keeping it.When you approach to purchase iPod touch 32GB, you are certain to obtain a beneficial products. But never neglect this, a superior product signifies a different point: a swooping price tag tag. Are you all set to get ripped off? Try to remember, correct to what you hear, Apple brand does not market its items low-cost and not often goes on a sale or low cost. Nonetheless, if you are fairly positive you want an iPod touch, go in advance and sacrifice your financial savings just this one time. I'm sure you won't regret it.Tags:
Teach You How to Choose the LED Display Screen of the Hotel
Teach You How to Choose the LED Display Screen of the Hotel
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 Maipu Guangcai 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 advantages of surface mount packaging are 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. Hotel Maipu Guangcai LED display manufacturer4. Drive mode. The driving mode of indoor Maipu Guangcai 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
What Should I Do When the LED Display Screen Does Not Work? Is There Any Solution
What Should I Do When the LED Display Screen Does Not Work? Is There Any Solution
When the LED display screen is installed or used, sometimes the display screen does not work. At this time, many people who do not know the principle may feel that the quality of LED display screen is not good and ask to replace the screen. In fact, the phenomenon that the display screen does not work has nothing to do with the quality of the screen. Let's talk about the handling method of LED display screen not working.The first case that the LED display screen does not work is that the display screen does not work and the green light of the sending card flashes (made into retractable type).The main reason for this situation is that the screen body has no power supply; The network cable is not connected properly; The receiving card has no power supply or the power supply voltage is too low; The sending card is broken; The signal transmission intermediate equipment is connected or faulty (e.g. function card, optical fiber transceiver). The sequence of troubleshooting methods to be adopted at this time is: check and confirm that the power supply of the screen is normal; Check and reconnect the network cable; Ensure that the DC output power supply of the power supply is 5-5.2v; Replace the sending card; Check the connection or replace the function card (optical transceiver).The second case that the LED display screen does not work is that the Maipu Guangcai display screen does not work and the green light of the sending card does not flash.The main reason for this problem is that the DVI or HDMI cable is not connected properly; The copy or expansion mode is not set in the graphics card control panel; The software chooses to turn off the power supply of the large screen; The sending card is not inserted in place or there is a problem with the sending card. At this time, the detection sequence of exclusion method is: check the DVI cable connector; Reset the copy mode; The software selects to turn on the large screen power supply; Reinsert the sending card or replace the sending card.The above are the main problems and detection methods of LED display screen inoperative. I hope it will help you.fqj
How to Set the LED Display Screen to Play Regularly and Switch on and Off
How to Set the LED Display Screen to Play Regularly and Switch on and Off
Large LED display screen is a common information display window for organs, enterprises and institutions, which plays a more and more important role in life. How to realize the LED display screen timing play and on-off? To this end, Maipu Guangcai has something to say: we all know that if the display all day depends on people to turn on and off the computer regularly, it will be very tired and delay time, so it is very necessary to turn on and off the machine automatically and play it automatically.How to play LED display regularly:To control the playback time of the LED display screen, you need to use the "regular sending" function in the installed software. Maipu Guangcai prompts you here: first edit the display file, and then specify the sending file corresponding to the sending time. Due to different control card software, different functions and different use methods; If your software can't achieve this function, you can consider using the secondary development function of the control card to write your own timing sending software.How to automatically switch on and off the LED display at fixed time:1 BIOS setting fixed-point automatic power on every dayStep 1: start the L E D display server computer, press del to enter BIOS, then select "power management features" and enter. Find the item "restore on AC / power loss" in the power window, press enter, and then set its value to "power on" through the direction key;Step 2: select "resume onrtc alarm" and press enter, and then set its value to "enable" through the direction key; Step 3: select "RTC alarm date", press enter, and then set its value to "every day", indicating that the same operation is carried out every day. In the same way, set "RTC alarm hours", "rtcala RM Mi nut e" and "RTM alarm second" to "07", "55" and "00", which means that the startup time is "7:55:00" in the morning. After all settings are set, press F10 to save and restart.Because the BIOS of different mainboards is different, the settings of some mainboards may be a little different from those above, but just remember to find the words "wake up" or "resume by alarm" in power management, because this is the option to set timed power on.2 With the help of shortcuts, the display information file is automatically run after startupStep 1: associate the display file with the display program. For example, the display file is "common. Led", and the program to open it is "led. Exe". Just right-click the "common. L e d" icon, click "properties", click the "change" button in the "general" option, find the program "led. Exe", and click "OK";Step 2: generate a shortcut to the display file. Right click the "common. Led" icon, click "create shortcut", and a "shortcut to common. Led" icon will appear. Then click "start", "run" and "Browse" in the lower left corner of the computer display screen, find the "shortcut to common. Led" file and confirm, and copy the "... Shortcut to common. Led. LNK" in the "open" column Note: if you click "OK", you can directly open the display file "common. Led";Step 3: set the startup item in the super rabbit. Download the super rabbit software on the Internet and install it into the LED display server computer. Open the "magic settings - create your own system" in the "rabbit tool", right-click in the "startup program", select "new project", paste "D: LED shortcut to common. Led. LNK" in the "command line", and set the title yourself.After this setting, the startup will automatically run the display file "common. Led", which has the same effect as manually opening "common. Led".fqj
Apple still Uses Cheaper LCD Screens and Decides to Produce Them by Itself, Endangering the Interests of Many Screen Suppliers
Apple still Uses Cheaper LCD Screens and Decides to Produce Them by Itself, Endangering the Interests of Many Screen Suppliers
It is reported that Apple plans to use cheaper LCD screens on most iPhone models next year, while delaying the full conversion to high-tech organic light emitting diode (OLED) screens, which also reflects consumers' price sensitivity.According to the Wall Street Journal, apple is expected to launch an LCD model and two OLED models this fall, and the LCD model is expected to account for most of its iPhone sales. It is expected that Apple will continue to use LCD next year, which is completely inconsistent with the previous report of a complete transition to OLED.Apple announced in March that it was testing its internal microled screen.Apple's decision to insist on using cheaper LCD screens has brought more uncertainty to its screen suppliers; In addition, Apple's decision to produce its own screen endangers the interests of many suppliers.Since apple is not expected to use these products in its OLED screen, the shares of Apple's three LCD suppliers, including sharp, LG display and Japan display, have fallen sharply in the past year. Subsequently, when it was revealed in March that Apple was already testing its microled screen, the shares of many display suppliers, including Samsung, sharp and LG display, fell again. This also damages the interests of general display and Synaptics. After reports showed that Apple would use more LCD screens than expected, the share price of general display company, which provides OLED display materials, began to fall.The Wall Street Journal pointed out that Apple's decision to postpone the implementation of OLED screens does not necessarily bring opportunities for LCD suppliers. For example, LG display has planned to invest in OLED screens.Apple has been facing the problem of supply shortage in the past. If suppliers have to change their production plans, Apple may face supply shortage again. It is reported that Japan display raised $320 million in April to meet the expected demand for its advanced LCD.According to recent reports, Apple has communicated its transformation plan to its suppliers, including plans to reduce parts procurement from suppliers by nearly 20% this year. At the same time, the uncertainty of the continuous expansion of Apple's supply chain will also make the new iPhone more expensive than ever.
Apple still Uses Cheaper LCD Screens and Decides to Produce Them by Itself, Endangering the Interests of Many Screen Suppliers
Apple still Uses Cheaper LCD Screens and Decides to Produce Them by Itself, Endangering the Interests of Many Screen Suppliers
It is reported that Apple plans to use cheaper LCD screens on most iPhone models next year, while delaying the full conversion to high-tech organic light emitting diode (OLED) screens, which also reflects consumers' price sensitivity.According to the Wall Street Journal, apple is expected to launch an LCD model and two OLED models this fall, and the LCD model is expected to account for most of its iPhone sales. It is expected that Apple will continue to use LCD next year, which is completely inconsistent with the previous report of a complete transition to OLED.Apple announced in March that it was testing its internal microled screen.Apple's decision to insist on using cheaper LCD screens has brought more uncertainty to its screen suppliers; In addition, Apple's decision to produce its own screen endangers the interests of many suppliers.Since apple is not expected to use these products in its OLED screen, the shares of Apple's three LCD suppliers, including sharp, LG display and Japan display, have fallen sharply in the past year. Subsequently, when it was revealed in March that Apple was already testing its microled screen, the shares of many display suppliers, including Samsung, sharp and LG display, fell again. This also damages the interests of general display and Synaptics. After reports showed that Apple would use more LCD screens than expected, the share price of general display company, which provides OLED display materials, began to fall.The Wall Street Journal pointed out that Apple's decision to postpone the implementation of OLED screens does not necessarily bring opportunities for LCD suppliers. For example, LG display has planned to invest in OLED screens.Apple has been facing the problem of supply shortage in the past. If suppliers have to change their production plans, Apple may face supply shortage again. It is reported that Japan display raised $320 million in April to meet the expected demand for its advanced LCD.According to recent reports, Apple has communicated its transformation plan to its suppliers, including plans to reduce parts procurement from suppliers by nearly 20% this year. At the same time, the uncertainty of the continuous expansion of Apple's supply chain will also make the new iPhone more expensive than ever.
Will the LED Transparent Screen Become the "Darling" of the LED Screen Market?
Will the LED Transparent Screen Become the "Darling" of the LED Screen Market?
Led transparent screen is a popular subdivision screen in the LED field in recent years. We often see the figure of transparent screen whether it is glass curtain wall, glass window or shopping mall. As one of the high-end display products, the price problem of the original transparent screen makes many users can only wait and see from a distance.With the rapid development of LED transparent screen, its price has also decreased significantly to the acceptable range of users, and various spacing and special-shaped display products emerge in endlessly. Transparent screen is gradually emerging in the commercial display field because of its unique display style.Scientific and technological progress is the core of social development and the first productive force. The transformation and upgrading of science and technology has not only greatly improved the modern production capacity of enterprises, but also further improved human vision in social development. In recent years, with the strong support of the construction industry in big cities, the glass curtain wall area of commercial buildings has reached a new peak. In this regard, led transparent screen manufacturers have made major technical upgrades to the transparent display scheme of large-area glass curtain wall. As a provider of indoor and outdoor LED transparent screen display solutions, Shenzhen Jingang vision is also very happy to contribute to our strength under the mainstream of this market.In order to expand the scope of commercial display application market, we continue to integrate new technologies and introduce various innovative technologies, products and solutions to the market. In recent years, led transparent screen solutions have become more and more common due to the use of advanced technology and most market participation. This popularity has also prompted the outbreak of urban commercial exhibition industry, which is also due to the continuous improvement of infrastructure and the rapid development of urbanization.When it comes to transparent screens, the market segments are relatively broad, and the market segments are based on products, technologies, components, display types, screen sizes and application scenarios. Based on various segments, led transparent screen can help enterprises choose growth niche market and strategic development, and determine the difference between the core application field of products and the target market.
Principle of Touch Screen Capacitance Screen_ What Are the Application Areas of Touch Screen
Principle of Touch Screen Capacitance Screen_ What Are the Application Areas of Touch Screen
Principle of touch screen capacitance screenTouch screen is the most friendly computer user interface at present. It is more and more widely used in consumer electronic products. The touch detection device and touch screen controller are good. The mechanical structure of the detection device is damaged in the process of touch screen device, resulting in the decline of touch accuracy and shortening of service life of the touch screen; In addition, the cost of commonly used capacitive and resistive touch screens is relatively high. Inductive touch screen can avoid damage to the touch detection device during touch and prolong the service life of touch screen products.The working principle of inductive touch screen, as well as the hardware circuit and part of the program design of the controller, all of the controller circuits have passed the verification. The non-direct contact touch of inductive touch screen avoids the damage to the touch detection device, prolongs the service life of the whole touch control system, and the repetition accuracy and touch sensitivity of touching the same point meet the expected design requirements.The capacitive induction touch screen is not affected by dirt, dust or oil stains, but it will be affected by the surrounding environment to varying degrees because it adopts the electric field coupling principle. At the same time, the capacitive induction touch screen has serious drift phenomenon.What are the application areas of touch screenTouch screen has become a hot spot in the market. In the market, shopping malls, hotels and other places, it is still dominated by smart phones. The growth momentum of the smartphone market slowed down and entered a period of gentle development. The application of touch screen outside mobile phones, such as automotive electronics, retail, medical treatment, public facilities, leisure and entertainment, will promote the rapid growth of touch screen market.In addition to applications in large fields, touch screens can be innovated in subdivided fields. In the field of "pen writing tablet", innovate the touch screen.The products have been extended to tablet with pen writing function, e-book, all-in-one machine, electronic whiteboard, etc. And the pen and hand can be used at the same time. When one hand is touching, the pen can also write at the same time.The traditional materials of capacitive touch screen are ITO, metal grid, nano silver wire, carbon nanotube, conductive polymer, graphene, etc. Metal mesh and nano silver wire have more supporters. Both materials are metals (silver or copper) and their conductivity is better than ITO.
Screen Fingerprint Identification Will Be Applied to LCD Screen, Not Just OLED
Screen Fingerprint Identification Will Be Applied to LCD Screen, Not Just OLED
Fingerprint identification on mobile phones has become an indispensable part of our daily life.Especially during the epidemic, face recognition is mostly paralyzed due to wearing masks, and fingerprint recognition has become the current optimal solution.Of course, if you use a mobile phone without fingerprint identification such as iPhone x, you have to find a way by yourself...9to5mac also gave a tutorial on using face ID with mask Screen fingerprint identification has become the mainstream, and the technology is also very mature. However, Tony saw a news while surfing the Internet today, saying that Tianma, a domestic LCD and LCM design company, released the world's first LCD Screen multi-point fingerprint identification scheme (Ted finger print, referred to as TFP).The strength of this scheme is that the off-screen fingerprint identification mobile phones we use now are basically OLED screens, while the LCD screen basically has no on-screen fingerprint identification...One plus 6T off screen fingerprint identification diagram As we all know, the screen fingerprint unlocking needs the illumination of the light source for fingerprint identification, but the LCD screen is relatively thick and has poor light transmittance; Second, the LCD screen cannot emit light actively, and the backlight will interfere with the identification of optical fingerprints.These two problems make LCD basically bid farewell to screen fingerprint recognition.Therefore, mobile phones with LCD screen basically adopt side fingerprint identification, and some will be combined with the power key on the side of the mobile phone.But OLED screens don't have this problem. Because the OLED screen is thinner and more transparent, it is natural to use fingerprints on and off the screen.Then why do manufacturers not directly on the OLED screen, but want to operate madly on the LCD screen? The reason is also simple: because LCD screens are cheap...Although Lu Weibing, vice president of Xiaomi, said publicly some time ago that Hongmi team successfully realized fingerprint recognition under LCD screen on a redmi note8 Pro prototype, so far, no manufacturer has officially announced this technology, and Tianma is the first.So Tony was surprised when he saw the news. This fingerprint identification scheme can be said to break through the two obstacles of current screen fingerprint identification technology - LCD screen and identification area.If the multi-point fingerprint identification in the LCD screen can achieve mass production, it means that the LCD screen can also use fingerprint identification!Another point is the identification area of off screen fingerprint identification.So far, the identification area of screen fingerprint is basically fixed, almost at the lower position of the screen. People will subconsciously put their fingers at the approximate position when unlocking the mobile phone.But no one can guarantee that every time the finger is pressed on the fingerprint identification area, because the identification area is so large, it is inevitable that there will be deviations...The scheme announced by Tianma this time shows that it can make the whole LCD screen recognize fingerprints!Tony mended his brain, that is, I could identify my fingerprint and unlock my mobile phone by placing my finger anywhere on the screen.If this multi-point fingerprint identification technology can be mass produced, the efficiency of unlocking the screen will be much higher than now. You don't have to find the identification area and poke it on the screen.It can be said that Tianma's operation directly makes the LCD screen ride on the head of OLED in fingerprint identification. Once LCD screens didn't even deserve fingerprint identification. Now they not only have fingerprint identification, but also can identify 5 at a time...As for why the multi-point fingerprint solution in the TFP screen can realize these functions, high integration has played a great role.In short, it is to integrate touch, display and fingerprint identification, replace the previous design of fingerprint identification module and reduce the thickness of the screen, so that the screen fingerprint identification is feasible on the LCD.At the same time, in order to realize fingerprint identification on the whole screen, Tianma covers the whole screen with optical path and sensors.As for how multi-point fingerprint identification can play new tricks, it still depends on the subsequent operations of manufacturers.As for the fate of LCD screen after mass production of this scheme, we still don't know, but before that, LCD screen has never been the first choice for mobile phone manufacturers.After all, the OLED screen is thinner, can emit light by itself, and the color is more bright. The experience is much better than that of LCD, but there are still problems of stroboscopic and screen burning, and the price is relatively expensive.When it comes to the LCD screen, the advantages and disadvantages are reversed...The price of iPhone 11 with LCD screen is lower For most users, OLED screen is their first choice, but there are still a group of people who stick to the LCD screen.In addition to having a larger viewing angle, another reason is that they can't accept the strobe of OLED screen. They think it's really hurting their eyes...Therefore, once the TFP scheme realizes mass production, the defect that the LCD screen has no off screen fingerprint will be supplemented. If the price can be controlled well, the current situation of the screen in the mobile phone market may change a lot.However, before that, the mobile phone market was still dominated by OLED screens, not to mention the suoper AMOLED screens such as Samsung. The evolution of LCD screens has a long way to go...
What Is the Forming Process of the Flexible Touch Screen
What Is the Forming Process of the Flexible Touch Screen
Every day, new products, new experiences, professional membrane switch proofing factory, 12 hour expedited shipmentFrom the hot sale of Samsung Galaxy edge flagship series to the advent of various curved screen bracelets and TVs, it is no doubt that curved screen technology has been widely valued and sought after by consumers and the industry in recent years. In the future, with the continuous development and improvement of fixed curvature curved screen technology, the flexible touch screen that can realize arbitrary bending will become an important development direction. On the 25th, at the 13th International touch screen and display technology development forum, Huang Hanfeng, deputy general manager of touch R & D from Shenzhen oufeiguang technology, made a detailed introduction to the flexible touch screen from the perspective of the industrial chain around the four key elements of flexible display, flexible touch, flexible cover plate and flexible bonding.Flexible displayFor LCD display, the LCD is usually responsible for controlling the display gray, and the three primary color filters control the display color, which requires them to correspond one by one in order to display normally. If the LCD panel is used as a curved screen, the inner circumference and outer circumference will be unequal, and the original one-to-one corresponding liquid crystal and filter will have position deviation, resulting in color distortion. In addition, it will also cause a series of problems such as light leakage, dark screen ghosting and snowflakes. Therefore, for the curved screen, the OLED display technology represented by AMOLED has almost become the best choice.Huang Hanfeng said that at present, Samsung is the undisputed AMOLED overlord in terms of patents, production capacity, yield and technology accumulation. The sixth generation AMOLED panel that began mass production at the end of 2014 can now produce 50000 pieces per month, and the yield can reach 60%. The second is LG, but LG has been focusing on large screen curved TV. At present, with the increasingly obvious trend of small screen AMOLED, LG is also accelerating the layout of small and medium-sized flexible screens. Although its output is not as good as Samsung, its yield can also reach more than 60%. The latest release of Xiaomi note 2 is the flexible AMOLED screen of LG. In addition, Japan's JDI and sharp (already acquired by Hon Hai), Taiwan's Youda, domestic BOE, Rouyu and other screen manufacturers are also accelerating the layout of their own AMOLED technology. It is the general trend for AMOLED to replace LCD.Flexible touchIn terms of touch control, ITO (indium tin oxide) transparent conductive film has become the most important touch layer material for display screens such as non curved LCD and OLED due to its good light transmittance, low thickness, excellent hardness and conductivity, mature manufacturing technology and many other reasons. However, as ITO itself is a brittle material, it is not suitable for making flexible touch layer with large curvature or even free bending, and the cost and cost are high. At present, it accounts for about 30% - 40% of the cost of the upstream material part of the whole touch screen industry, and uses "indium", a rare metal with limited reserves. Therefore, with the advent of the era of curved surface and flexibility, it is likely to be replaced.Huang Hanfeng said that at present, the main substitutes for ITO materials are graphene, carbon nanotubes, nano silver and metal mesh. Graphene and carbon nanotubes are very good substitutes for ITO from the characteristics of the material itself. However, graphene is still in the R & D stage and is still far from mass production. The industrial mass production technology of carbon nanotubes is not perfect, and the conductivity of the thin film products made of carbon nanotubes is not as good as that of ITO. Therefore, from the perspective of technology and marketization, metal grid and nano silver technology will be the protagonists of development in recent years. Metal grid technology has been applied in some PC display markets.The metal mesh technology mentioned here is a conductive metal mesh formed by pressing metal conductive materials such as silver and copper or oxides on thin film substrates such as pet. Its main advantages are low raw material cost and good folding ability. However, due to the problem of Murray interference ripple caused by yield, output and high-speed pixels, it is more suitable for desktop all-in-one computers, laptops, televisions and other products with low resolution and relatively long-distance use.Nano silver technology means that nano silver ink material is coated on pet or glass substrate, and then laser lithography is used to depict the conductive network of nano silver wire. Its main advantages are high yield, small linewidth, good conductivity and folding resistance, while its disadvantage is high cost. Moreover, compared with metal mesh, nano silver material has smaller radius of curvature and small resistance change rate during bending. In addition, due to the linewidth, it is more suitable for high-resolution close-up scenes such as mobile phones, smart watches and bracelets."By comprehensive comparison, I think nano silver has more advantages than metal grid," Huang Hanfeng said.Flexible cover plateIn order to bend at will, in addition to solving the flexible display and flexible touch, the last and most critical part is the flexible cover plate and fitting. However, due to its hard and fragile characteristics, glass cover plate is not the best choice in the field of flexibility.Huang Hanfeng said that compared with glass, pet and PI (polyimide) materials with high surface hardness and high light transmittance are better choices, but at present, pet and PI also have many problems to be solved. On the one hand, they are not resistant to high temperature and have poor light transmittance: pet and PI will have problems of partial melting and property change at low ambient temperature, and they do not have good light transmittance compared with glass.Secondly, it is difficult to achieve a balance between hardness and folding. Huang Hanfeng said that if you want to meet certain hardness requirements, you need to apply the hardened layer, but after coating the hardened layer, after repeated folding, the hardened layer will crack and reduce the hardness. Therefore, how to achieve a balance between the two is the biggest bottleneck at present.Compared with the flexible cover plate that needs further development, the 3D glass cover plate necessary for curved screen mobile phones has a very good development prospect.Some data show that 2018 may become the outbreak year of 3D glass cover plate. It is expected that the mobile phone penetration rate of 3D glass cover plate will exceed 50% around 2020. With the maturity of 3D glass cover plate processing technology and the decline of unit price, the penetration rate will further improve. It is expected that the market scale will reach more than 19 billion yuan in the future.Huang Hanfeng said that the common manufacturing processes of 1R (single radian bending) and 2R cover plates have been basically mature. They basically achieve a bending effect through hot bending technology. The difference is mainly in the coating of hardened layer. However, the yield is a problem to be solved, which is basically only 30%, and there is no room for improvement in the short term. If 4R is to be done in the future, the yield will be lower. Therefore, the yield is one of the urgent problems to be solved in the manufacture of cover plate.Flexible fitAfter the cover plate is selected, it is fitted, that is, the cover plate is integrated with the touch and display layer below to form a complete module. At present, there are two common methods: roller type and vacuum bonding: the roller has high efficiency and needs to roll the pasted object. The efficiency of vacuum type is relatively low, but it does not need to roll the pasted object, so it is not easy to cause damage to the pasted object.Huang Hanfeng said that if the curvature is large, you can only choose vacuum bonding. However, for the possible 4R bonding in the future, due to its special four side bending characteristics, it is difficult to avoid wrinkles and bubbles in places with large radians even if vacuum is adopted. At present, the industry has adopted customized extrusion airbags or plastic parts to alleviate this problem, but it has not been completely solved. Therefore, the industry still has room for progress in multi surface and high curvature fitting technology.Huang Hanfeng frankly said: "from the perspective of the supply chain, it will take several years for the flexible screen to really realize mass production. At the same time, it also needs the upstream and downstream supply chain to jointly overcome the relevant technical problems."For future development, Huang Hanfeng believes that the integration of various modules will be the general trend. He said: "in the incell technology of LCD, ITO touch film and liquid crystal layer are integrated together, which is a good integration. Now the fingerprint module is independent, and it can also be integrated with touch in the future. I think there will be a process of mutual integration and progress between functional modules in the future."
no data
Contact US

    Bao’an District  Shenzhen City, China

     +86 189 3806 5764

NEWSLETTER SUBSCRIBE
no data
Copyright © 2021 CrowBerry

   

chat online
NEED HELP? WE'RE HERE!