On March 30, 2023, the Chibang Consulting New Display Industry Seminar hosted by Ledinside and WitsView, subsidiaries of TrendForce Chibang Consulting, was successfully held, with thousands of representatives from upstream and downstream industries participating in the grand event to discuss the future of the new display industry. Zhou Mingbing, Manager of Crystal Energy Optoelectronic Epitaxy Process, attended the meeting and shared the "Opportunities and Challenges for the Application of Silicon Substrate GaN LED Technology in the Mini/Micro LED Industry" with a full supply of goods.

Micro LED, as the "ultimate display technology", has a market worth hundreds of billions in the future, and the report points out the advantages and challenges faced by Micro LED. For AR applications, Micro LEDs have excellent performance in brightness, energy efficiency, reliability, response time, color saturation, thickness, size, and other aspects, with huge market potential. However, there are currently significant technical challenges, including the need to improve effective EQE; High production cost and low yield; Poor brightness consistency; Poor grayscale response/brightness gradient effect; There is no ideal full color solution yet.

The technology of large-sized silicon substrate GaN LED has become the mainstream route for developing AR micro display Micro LEDs, and most Micro LED companies at home and abroad are researching. Micro LEDs based on silicon substrates have advantages such as large size, low cost, high wavelength consistency, non-destructive removal, low warping, and CMOS compatibility.

LatticePower has been deeply rooted in the field of silicon substrate GaN technology for nearly 20 years, and is the first to achieve global industrialization in the field of blue light LED. The company applied GaN root technology on silicon substrates to Micro LEDs and successfully prepared RGB silicon substrate Micro LED arrays in September 2021, taking a crucial step towards full color Micro LED chips. It became the second company in the world and the first in China to master RGB three color Micro LED chip technology on silicon substrates.

For achieving full color Micro LEDs, red LED is one of the major bottlenecks in Micro LED technology, and its efficiency, FWHM, and wavelength drift will face significant challenges. Crystal Energy Optoelectronics has achieved a peak EQE11.8% @ 1mm2 in the epitaxial growth of InGaN red LED, which is at the leading level in the industry. At present, Jingneng Optoelectronics can provide standard 8-inch RGB InGaN LED epitaxial wafers to domestic and foreign customers.

At the beginning of this year, Jingneng Optoelectronics developed a 5-micron pitch pixel matrix, and will release an RGB tricolor array with driver by the end of the year. Next, we will use silicon substrate Micro LED display technology to explore the industrialization of silicon substrate Micro LED technology in areas such as AR glasses, matrix headlights, HUD, etc.

From: LEDinside