With SONY a few years ago on display Micro LED prototype TV, 2016 CES exhibition has also displayed the updated technology of Micro LED TV, Apple also invested in the huge amount of Micro LED industry, and rumors that the future Apple will import Micro LED On the display panel of the mobile device, the industry is looking forward to the technology of MicroLED display and offers another feasible direction and option for the LED backlight and LCD panel industry to be impacted by the growth of the OLED panel.

 

Micro LED display made similar to the LED display such panels, to dozens of inches to hundreds of inches of this area is technically feasible, but far away from commercial production, is the need for higher speed Large amount of transfer technology, a small LED moved to the substrate, otherwise the existing technology and yield, to create a usable display, take too long, can not mass production.

 

As the dot pitch of LED shrinks, the cost of traditional LED package is actually the proportion of the whole LED display module, in fact, it will be relatively high. The manufacturer can keep the size of the traditional LED chip miniaturized. However, with the package bracket and wire bonding, There are also costs and technical limitations that can not be balanced.

 

In the future, if the display is made of Micro-LED, there is no need to package the bracket and the metal wire to reduce the cost of the traditional SMD-LED package.

 

Micro LED mass production to be solved the problem of uniformity

 

Micro-LED products require high wavelength uniformity, small spacing LED products with wavelength uniformity is more demanding. At present, the blue LED wavelength uniformity requirement of the production standard is within ± 5-12nm, however, the wavelength uniformity of the small pitch display requires even as low as ± 1-1.5nm. If it is Micro LED, the requirements will be more stringent.

 

In other words, mass production scale, high precision transfer process to improve process yield, at least to reach more than 99.9% level, or even 99.999% better.

 

As a result, the industry needs to use the PCB board, but also to be able to meet the requirements of customization, through thin line width / line spacing and small hole development, with this ultra-high density lines, have a way to carry a huge amount Micro-LED tokens, for consumers and users, you can present a high-resolution, high-quality display.

 

In addition, the application of Micro LED smart bracelet and smart watch on the difficulty of the development of LED driver IC has the potential to complete, because the control of the planning of less, if it is used in the LED display with MicroLED , With the driver IC you need a high degree of customization, try to drive and line scan circuit integration, to simplify the PCB backplane design, improve the photoelectric conversion efficiency, solve due to high density LED too much, leading to lack of driver IC space The problem. At the same time, the drive circuit can be modular design, so as to further save design and manufacturing costs.

 

Micro LED industry development in the future, there are a lot of things to be completed gradually different industries, in order to put this piece of jigsaw puzzle. (Text / LEDinside Ivan)

 

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