The Application Status of LED Display Screen, Why Should It Be Imported into GM (mssop Package)?

The development history of LED can be traced back to the 1970s. The earliest gap and GaAsP homogeneous junction red, yellow and green LEDs with low luminous efficiency have been applied to indicator lights, digital and text displays. Since then, the use of LED has entered a variety of application fields, including aerospace, aircraft, automobile, industrial application, communication, consumer products, etc., covering all sectors of the national economy and thousands of households. The application and development of LED can also be seen from the growth track of LED display industry. Including: 1. The LED luminous efficiency is improved. In order to achieve the same brightness, the LED current value can be reduced, so the service life of the power supply can be prolonged. 2. In addition, the size of LED lamps is getting smaller and smaller. From plug-in lamp (DIP) to surface paste lamp (SMD), there are even 0606 SMD lamps in the market. With such a development process, the dot spacing of LED display screen can be reduced, and it can also move from outdoor to indoor. Therefore, the process design of the overall display screen must be continuously refined. According to the current application specifications, outdoor screens are commonly used (see Figure 1): P10, p12, p16, P19, P20, p21, P22 and P26, especially P10 is the common specification of outdoor advertising screens; Commonly used indoor screens (see Figure 2): P3, p3.75, P4 and P5. Some manufacturers can achieve P1.5 and P2. Today, it can be seen that indoor advertising screens are widely used in subway stations (such as Beijing Sanyuanqiao station).

2 Miniaturized packaging trend of LED driver chips

With the rapid development of LED display screen industry in production technology, display screen manufacturers have been unable to use the past product high homogenization and price reduction competition strategy to obtain market share. In the face of various applications and market demand, such as ultra dense screen or rental screen, the design must be made to a higher standard in order to face the fierce market competition. It includes that the box structure shall be beautiful and the overall weight must be light and thin, which makes it easy for users to assemble and disassemble on site and saves assembly time; Even some manufacturers directly connect the data and power interfaces between the boxes without any wire connection between the boxes, so as to reduce the possibility of ash accumulation and reduce the occurrence of failure rate. Therefore, for the light and thin box design, the market has higher and higher requirements for the driving IC packaging technology. From the earliest SOP (accumulated product code is GF) packaging, SSOP (accumulated product code is GP) packaging and QFN packaging (accumulated product code is GFN), to mssop now (accumulated product code is GM) packaging, it can be found that the size lightness of LED driven IC is an inevitable trend, which also tests the ability of driving IC manufacturers in product design. They must expand their functions to the extreme in the limited chip area.

3 Why import GM (mssop package)? What are the advantages of GM package?

A. Advantages of GM (mssop) package replacing GP (SSOP) package

The lamp driven two-layer plate scheme reduces the total module manufacturing cost by 7%

As far as the current outdoor LED advertising screen market is concerned, the specification of P10 / 4 sweep is the mainstream. The use of GM encapsulated LED Driver IC, compared with the traditional GP encapsulated driver IC, can reduce the use of one layer of driver version; in addition, it can also be installed on one side, and it is not difficult to cut feet on the back, so as to simplify the overall production process and improve production capacity. The most important thing is to reduce the total cost of module production by 7%.

Small package area is favorable for PCB routing design

The packaging area of GM is 37% less than that of GP. Therefore, whether it is for the PCB design of LED display screen of plug-in lamp (DIP) or surface mount lamp (SMD), the layout is simpler and the number of board layers can be saved.

With the LED lamp, the luminous efficiency is improved and the optimum current value is matched

As mentioned above, the luminous efficiency of LED lamps has jumped, so the outdoor LED display can use a smaller current to achieve the same brightness as that used in the past. According to the current market experience, the application current of outdoor LED display mostly falls at 20mA 10%. For example, the maximum current of GM packaged products such as accumulated mbi5120, mbi5124 and mbi515x is mostly set at 20 25mA, which meets the mainstream demand of the market

Pin pin design is the same as GP packaging, simple import program

The pin pin function definition of GM package is exactly the same as that of GP package, so when converting the original GP package to GM package, it can be perfectly replaced only by slightly modifying the original PCB.

B. Advantages of GM (mssop) package replacing GFN (QFN) package

Improve the yield of LED display products and reduce the occurrence of false soldering and tin connection

When using QFN packaging, the common problem is that the pin pin pin, heat dissipation pad and PCB pad of QFN packaging are prone to false soldering or poor tin connection between adjacent pin pins, resulting in an increase in the defect rate. Relatively speaking, GM packaging has low requirements for SMT process, which helps to reduce the production defect rate and reduce the cost of customer complaints and customer service.


Patch speed increased by 10% and production capacity increased rapidly

GM packaging patch speed is 10% faster than QFN packaging speed, which helps to improve the overall production capacity.

Reduce the demand for high-tech manpower

GM packaging test and maintenance are easier than QFN, so it only needs ordinary technicians to operate, reduce high-end labor costs and make more efficient application of resources.

At present, GM (mssop) packaging has been on the market for about half a year. In view of the common questions during import, the following summarizes the relevant SMT experience for manufacturers to refer to during import and accelerate the import speed:

PCB related

a. Confirm whether pcbpad has been oxidized, and clean it with cleaning agent before going online

b. If the PCB is not vacuum packed, it needs to be baked before going online

c. Confirm the mark point on the board edge

d. The board needs to pass AOI and X-ray

Steel mesh related

a. The recommended thickness is 0.12mm

b. Cleaning times: it is recommended to clean every 3 5 times after printing


a. BGA, CSP, QFP and other non vacuum packaging IC must be put into the oven for baking if the original packaging has been removed: 110 / - 5 24hr;

b. Confirm and check the mounting pressure

c. Before going online, the furnace temperature curve shall be obtained by using the furnace temperature plate

Miniaturization is the driving force for the design of all consumer electronic products, and consumer electronic products are developing in the direction of light, micro and. The world's first computer covers an area of 1500 square feet and weighs 30 tons. It has developed into the pad in its hands, "big brick" Portable mobile phones have developed to today's smart phones; in response to the design orientation of LED display screen and the overall market demand, we can see the phenomenon that GP (SSOP) packaging replaced GF (SOP) packaging in the past. Therefore, it can be boldly expected that GM (mssop) packaging will also replace most GP (SSOP) packaging.

The introduction of new GM packaging represents the improvement of LED display manufacturing process and also proves the progress in R & D capability. Whether GM packaging replaces GP packaging or QFN packaging, the quality of products can be improved. I believe that more and more GM use experience can make LED display manufacturing enter the next era.

The Application Status of LED Display Screen, Why Should It Be Imported into GM (mssop Package)? 1

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What Are the Characteristics of LED Display Screen?
What Are the Characteristics of LED Display Screen?
Out of all the extreme vaporizer the V-Tower vaporizer turn out to be outstanding with some special features like beautiful LCD display screen, Stainless steel housing, plenty of glass and a blue base lights. The V-Tower has become the market leaders when it comes to vaporizers and surely deserves the place. During the procedure in the Arizer Extreme vaporizer the hot air passes through the bowl into the bag or it can also pass through the hose. For displaying the temperature it has an LCD screen and has a fan which has a feature for controlling the speed. In the presence of the whips the hits make are fine and quick. It is automatic and has a remote. So now you can sit back and relax while the vaporizer will do the job. Thus the extreme vaporizer us a best for your pocket as well for its features. Some of the attributes of Extreme Vaporizers are: This vaporizer will only cost you around 299$ at the Vaporizer giant while the digital vaporizer will come at the price range of 699$. Next it has an LCD screen which shows the temperature and as the feature of fan also which you can adjust yourself according to the suitability of your herb. You can also change the temperature from Celsius to Fahrenheit. The Glass used is made from the borosilicate which is the toughest glass in the world. The glass has got finesse by giving it a perfect structure and a shape. The taste of the herb is a delight in the company of a ceramic heater and thus uplifting its natural herbs. It is the only vaporizers which is fully automatic and comes with a remote control. It has all the automatic functions like on/off, adjusting speed of the fan , a timer. Also it gives you the feature of 9 preset temperatures giving you the wide variety of temperatures to choose from. It is also equipped with lots of glass and a chamber in which the procedure runs through smoothly giving you the pleasure of smoking.
How to Solve the Problem of LED Display Screen Is Not Bright
How to Solve the Problem of LED Display Screen Is Not Bright
MYSORE: The postal department has gone hi-tech in advertisement of its products and schemes. The Liquid Crystal Display (LCD) screens have been put up at three post offices in the city to educate public about various facilities provided by the department. As part of modernization, the authorities have installed display screens at the head post office near Nehru Circle and at Saraswathipuram and K R Nagara branches to promote its mail, financial and premium services. An official at the head post office stated that the display screen was installed six months ago and it has yielded results as more number of people are coming forward to avail of the facilities. According to him, over 1,000 persons visit the post office everyday and this has come handy for them to educate masses. The e-post serive ensures larger reach. With this facility, people can send their message to any address in India with a combination of electronic transmission and physical delivery through a network of over 1.55 lakh post offices. E-post sends message as a soft copy through the internet and it will be delivered in the form of a hardcopy. The service costs Rs 10 per A-4 size paper. Such facilities are being screened to create awareness. This apart, consumer awareness advertisements are being displayed to educate people about supply of foodgrains through the public distribution system. Assistant superintendent of posts, Mysore division, Mahadevaiah told TOI that the initiative is a part of the Project Arrow scheme. LCD screens are put up at three posts office to promote products relating to business development, insurance and finance.
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
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