Academician Zheng Youming: On the eve of Micro LED entering mass production, AR glasses are the first breakthrough

“Micro LED has been in development for 20 years since it was proposed in 2001. It is relatively clear how the technical route will develop and how key technologies will break through. Now it has entered a bright period of steady climb as an emerging technology, which can support the commercialization of products. The process of transformation is on the eve of breaking through mass production.” said Zheng Youli, an academician of the Chinese Academy of Sciences.

Entering a steadily climbing bright period

From the perspective of the emerging technology maturity curve, after the technology budding period, the expected expansion period, and the bottom period of bubble bursting, Micro LED technology has entered a stable and bright period of climbing, and is moving towards a production maturity period in the future.

 

Micro LED is ushering in a new wave of development. Academician Zheng Youjing said that, first, Micro LED technology has been able to support the commercialization process of products; secondly, in the era of 5G information technology, 5G+8K, 5G+VR/AR have urgent needs for optoelectronic information Display; finally, Mini/Micro LED has irreplaceable advantages such as low power consumption, high brightness, fast response speed, and wide viewing angle, and it is developing at the right time.

 Focus on high-end high-end fields

The Micro LED display industry is advancing along two industrialization development routes, mainly focusing on high-end high-end applications, super-sized displays and ultra-small-sized micro-displays, with the development of ultra-large-scale displays first.

Academician Zheng Youli said that due to the technical difficulties of reducing the size of the pixel chip and pixel pitch, Micro LED can only achieve the target high resolution by increasing the screen size and widening the viewing distance. Security monitoring and other commercial needs. In the process of development, Mini LED technology has also been born as a transition technology, and LED super-sized display technology.

In the field of microdisplay, which are the main breakthroughs in AR and VR? “I think the first breakthrough lies in AR.” Academician Zheng Youli said.

Near-eye Micro LED display for AR glasses requires extremely small area and high resolution. Due to the challenges faced by traditional mass transfer technologies such as precise pick and place and transfer printing, another way can be realized with the help of Si microelectronics technology. Therefore, compared with VR, AR can be mass-produced because it can be monochromatic, monolithic, and supported by silicon materials. It is understood that TSMC is already preparing to develop this technology. Once mature, the price can be reduced and mass production can be realized in the future.

  Turn to the main battlefield of consumer electronics

The development of a technology must not always focus on the high-end market. How will Micro LED turn to the main battlefield of consumer electronics in the future?

Academician Zheng Youjing said that the technical difficulty of developing from ultra-small-sized microdisplays (smart watches, car-mounted) to small-sized is constantly decreasing, while from super-sized display through medium-sized (PC) to small-sized, the technical difficulty is constantly increasing. increased. At present, the two ends of the size are developing towards the middle, and the final meeting point is concentrated on the display of smartphones. These two routes should be slowly advanced in combination with market factors.

On the whole, driven by demand and driven by the market, it is expected that in the display technology replacement cycle, LCD, OLED and LED will develop dynamically and synergistically, and major changes may occur in the future.

“In the future, only by forming an orderly competition can we become bigger and stronger. To compete, we also need to cooperate.” Academician Zheng Youmei said.

 

Author: Yoyokuo