Source: Samsung Display
Kim Gong-min, executive director of the technology strategy team of the R&D Center, made this statement when attending the "Deep Tech Forum 2023", which was held on 11 It was held at the Northeast Asia Trade Building in Yeoksam-dong, Seoul, South Korea.
The Apple Vision Pro head display launched by Apple displays OLEDoS (OLED on silicon) technology, which mainly deposits organic light-emitting diodes (OLED) on a silicon substrate.
OLEDoS can be used in virtual reality (VR) devices that block the external environment, but it is difficult to apply to augmented reality (AR) devices due to brightness limitations.
IT House Translation Kim Gong-min's partial speech is as follows:
OLEDoS cannot meet the requirements for the use of AR devices in terms of brightness, light appearance and product life conditions.
Our goal is to ensure existing functionality /Technically, the LEDs are made as small as possible to ensure higher resolution and brightness, better characteristics and product life. We are developing LEDoS technology using light-emitting diodes (LEDs).
Kim Gong-min also admitted that one of the current challenges is the wafer technology on the backplane side. Although the size of micro LED chips can be reduced using existing semiconductor processes, the process of realizing ultra-high-resolution screens will have completely different characteristics from LEDs for lighting.
When the LED size is smaller than 20um or 10um, the characteristics will be significantly reduced and the expected functionality cannot be ensured. How to prevent this and achieve (intended functionality) is a challenge.
ANNA