This year at CES, Seoul Semiconductor finally revealed its Micro LED series products for the first time ever since the Korean LED maker announced that it has been working on the technology. LEDinside was honored to be invited to Seoul’s private show room at CES and had an interview with Sam Ryu, executive vice president of IT sales at Seoul Semiconductor to learn more about the company’s Micro LED development progress.


Seoul Semiconductor is a discreet company, according to Ryu, as a result, the company only unveiled its Micro LED products when they are at the stage of mass production even though it has been working on the technology and related products for years.

(From left to right, Sam Ryu and Sang Hyuk Lee, Seoul Semiconductor)

This time at CES 2020, Seoul Semiconductor demonstrated several Micro LED products that are ready to be commercialized. With its 0606 and 0404 RGB LED, Seoul marked its way leading to LED display field. And for Micro LED, the company launched 200 µm 0202 RGB LED package. The chip size has reached 2*3 mil. Furthermore, a 40 µm RGB LED package was also presented.

Putting micron size Micro LED chips into a package and transfer to backplanes relies on special transferring technology and fabrication process. Seoul Semiconductor has successfully developed a mass transfer technology to put Micro LED onto any kind of backplane including PCB or glass. In addition, given the tiny size of Micro LED, it would be challenging for its clients to process SMT by themselves. Thus, Seoul Semiconductor changed its business module from selling only LED components to delivering RGB LED modules to its clients.

Ryu mentioned that Seoul Semiconductor has entered mass production phase with its Micro LED products. With its subsidiary Seoul Viosys, they are ready to manufacture full color RGB LED chips in volume. And Seoul Semiconductor, who owns advanced packaging and mass transferring technology, is capable of providing Micro LED modules. With its proprietary technologies, Seoul Semiconductor aims to build strategic partnerships with brands and end product makers to push Micro LED display commercialization.

Original article by Roger Chu / Research Vice President of LEDinside, Trendforce. Edited and translated by Yining Chen / LEDinside