Fine pitch led screen how to go into the future?
Fine pitch led screen how to go into the future?
In recent years, the application of small pitch in indoor high-definition display field has become more and more extensive, and the display effect of fine pitch led screen LED display has also been affirmed by users. Such market potential has enabled international manufacturers to invest in the development of smaller pixel pitch products.
In the CES and ISE exhibitions in 2019, the well-known traditional TV manufacturers Sony and Samsung unanimously demonstrated their advanced technology in the field of large-size indoor small-pitch display. SONY is welcoming the ultra-high-definition TV era and the 2020 Tokyo Olympics 8K. The resolution of the broadcast opportunity, the introduction of 120fps refresh rate and 8K, 4K (7680x 4320) resolution of the Crystal LED Display system, fully demonstrate the intention of SONY to lead the 8K, 4K display specifications; another international manufacturer Samsung is refined Own large-size LED indoor display, the second generation of the wall, the size is expanded to 219 吋 and the surface treatment of the module is strengthened to reduce the light reflection, so that the surface of all modules is black, showing the perfect display, and the module cutting tolerance is also processed. Very precise, can not see the traces of the module stitching. In addition to the international companies that have actively exhibited their achievements, we can also see that many manufacturers are actively developing and improving in the pursuit of high resolution in the market. This direction has become an industry trend.
2017, 2018 Mini LED chip, package status, and small pitch LED display development direction
Smaller-pitch LED displays are generated by consumers' increasing demand for display effects. The LED industry's leading chip brand, Jingyuan Optoelectronics, has a perfect solution in the high-definition display area of small-pitch indoors, let us from mini LED From the perspective of the development of chips and packages, the future development direction of small-pitch LED displays.
In 2017, although the small-pitch market has grown significantly compared with the previous year, it is limited by the acceptance of market prices. The main display market is still at P2.5~P1.5, and the package is also widely used in 2020 and 1010. .
In 2018, with the improvement of the market's 1010 yield, the development is approaching maturity, and the market share of P1.2's display screen has grown substantially. Looking at domestic and international indoor display manufacturers Riyadh, Chau Ming, Lianjian, Ai Biesen, Barco Daktronics, etc., have products of P0.7~P1.2.
2017 is limited by the package price and production yield of 0808 and 0606. The indoor display with less than P1.5 is less than 24.6% of the total indoor display in China. Among them, the market share of P1.0 is less than 0.3%.
The market is less than P1.0 in 2018 and it is estimated that the growth is not large.
P <1.25 Small-pitch display market challenges
The indoor display of P0.9 is only 2~3 times of P1.25 with LED cost alone. After many end-users have evaluated the resolution, display effect and cost of both P0.9 and P1.25, 99% of customers still choose P1.25 with a higher CP value of the display quotation. Therefore, in order to make it less than P1.25 The popularity of the display screen, not only the improvement of LED manufacturers' technology, PCB circuit board, and driver IC manufacturers are also working hard to develop products that meet market demand.
1. PCB board price and supply:
In general, the P0.9 indoor display requires 8 to 10 layers of HDI boards, and the price of the PCB will be 2 to 3 times the price of the 4-layer board required for P1.25, although in the current technology. To make a HD LED Screen display, the cost of the board will rise sharply, but there are still many manufacturers trying to surpass the price barrier to see the business opportunities in the terminal market.
2. Driver IC:
When the spacing between indoor narrow pitch led screen display screens is getting smaller and smaller, and more and more pixels are added, the power loss caused by the driver IC is more and more important. The selection of the common-cath or common-yang drive IC will become The main topic, whether the supporting driver IC can support 16-bit grayscale output and 4K refresh rate is also one of the keys to the rapid development of small pitch led screen display.
3.LED PKG:
We can clearly see that the LED package on the market is constantly shrinking in size from 1010, 0808, 0606 in response to the need for a small pitch display.
4. LED chip:
In order to reduce the cost pressure by a small-pitch display of less than P1.25 or even P0.9, LED package manufacturers have begun to reduce the chip size to the fine pitch led screen chip. Due to the increased resolution of the display screen, the traditional P and N pad packaged chips can not meet the requirements of the indoor small-pitch display factory, and the RGB flip chip is also designed to solve this problem.
