The Electronic and Optoelectronic System Research Laboratories (EOSRL) under the Taiwan government-sponsored Industrial Technology Research Institute (ITRI) has formed the Consortium for Intelligent Micro-assembly System to develop monocrhome blue-light micro LED panels coated with quantum dot materials, according to an article in DigiTimes.
EOSRL to Set Up Pilot Production Line of Micro LED Panels
The consortium brings together LED makers, quantum dot material suppliers, and IC design houses. EOSRL intends to use the panels for augmented reality (AR) and virtual reality (VR) devices through work with local and international vendors. EOSRL plans to set up a pilot production line of micro LED panels not including the production of epitaxial wafers for about US $6.6 million.
So far, the micro LED panels have a resolution of QHD (960 x 540) because micro LED chips have a minimum size of 5-micrometer.
EOSRL general director Wu Chih-I said in the article that his organization is capable of mass-transferring 2,500 (50 x 50) micro LED chips on a 10cm x 10cm area with a yield rate of 99.9%, and this capability is proof of the feasibility of the micro LED mass transfer technology.
By the end of 2017 or the beginning of 2018, EOSRL reportedly wants to increase mass transfer on 10cm x 10cm area up to 10,000 (100 x 100) micro LED chips, Wu said. EOSRL also intends to attain a resolution of 4K2K, and pixel density of 1,000 pixel per inch (ppi) for monochrome micro LED panels by the end of 2018, and an 8K4K resolution with 2,500ppi in 2019.
Notably, small-size micro LED panels for AR and VR devices offer superior response time and resolution compared to LCD and OLED panels. However, for smartphone applications, micro LED cannot yet compete with OLED in terms of a performance-cost ratio.