China-based microLED technology developer Qiushui Semiconductor has raised almost 200 million RMB (almost $30 million USD) in its Series-A funding round, led by Zhaohui Capital.
Qiushui has developed a unique microLED microdisplay production process, in which it creates an electrically insulating wall between pixels on the epiwafer, and so does not need to utilize etching to singulate the microLEDs. . The company says that avoids the sidewall damages and thus enables higher efficiency microLEDs.
Quishui says it will utilize the funds to build an 8-inch microLED production line in Ningbo, China. Beyond using its unique insulating-wall technology, the production line will also use a hybrid bonding 3D packaging process, where wafers are joined through both dielectric and metal interconnects. According to the company, all these technologies help to improve the performance of the microLEDs (efficiency), increase yields dramatically, improve the emission angle (down to around 10-degrees) and increase operating temperatures.
Quishui has already developed a 0.61" monochrome microLED microdisplay, and has produced samples that has been validated by customers.
