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Electronic and Optoelectronic System Research Laboratories (EOSRL) under government-sponsored Industrial Technology Research Institute has made a breakthrough in technology of mass transferring micro LED chips from sapphire-based epitaxial wafers onto substrates, according EOSRL general director Wu Chih-i.
EOSRL has conducted R&D of micro LED mass transfer technology through cooperation with LED driver IC design house Macroblock and micro LED display panel maker PlayNitride, Wu said.
The commercial application of micro LED technology hinges on whether yield rates and efficiency for mass transfer are high enough to keep product cost at acceptable levels, Wu explained. Some micro LED makers have claimed success in mass transfer, but in fact the time taken for their mass transfer process is so long that the cost is too high for commercialization, Wu noted.
EOSRL is able to mass transfer up to 10,000 micro LEDs from an epitaxial wafer onto a substrate at one time within an hour and will begin trial production in fourth-quarter 2019, Wu said.
EOSRL showcased its technology of mass transferring micro LED chips onto PCB, PI (polymide) and glass substrates at SID's Display Week taking place in San Jose, California, during May 14-16.
Micro LED technology is likely to be initially used in large-size indoor fine-pitch displays and then in gaming monitors in place of mini LED-backlit LCD models as well as automotive displays, industry sources indicated.
According to Macroblock, selection of materials of substrates depend on application of micro LED chips, with glass substrates suitable for micro LED TV and smartphone panels; PCB substrates for large-size micro LED displays; and silicon wafer for displays used in head-mounted smart devices.
https://www.digitimes.com/news/a20190522PD210.html
EOSRL has conducted R&D of micro LED mass transfer technology through cooperation with LED driver IC design house Macroblock and micro LED display panel maker PlayNitride, Wu said.
The commercial application of micro LED technology hinges on whether yield rates and efficiency for mass transfer are high enough to keep product cost at acceptable levels, Wu explained. Some micro LED makers have claimed success in mass transfer, but in fact the time taken for their mass transfer process is so long that the cost is too high for commercialization, Wu noted.
EOSRL is able to mass transfer up to 10,000 micro LEDs from an epitaxial wafer onto a substrate at one time within an hour and will begin trial production in fourth-quarter 2019, Wu said.
EOSRL showcased its technology of mass transferring micro LED chips onto PCB, PI (polymide) and glass substrates at SID's Display Week taking place in San Jose, California, during May 14-16.
Micro LED technology is likely to be initially used in large-size indoor fine-pitch displays and then in gaming monitors in place of mini LED-backlit LCD models as well as automotive displays, industry sources indicated.
According to Macroblock, selection of materials of substrates depend on application of micro LED chips, with glass substrates suitable for micro LED TV and smartphone panels; PCB substrates for large-size micro LED displays; and silicon wafer for displays used in head-mounted smart devices.
https://www.digitimes.com/news/a20190522PD210.html
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