On July 31, reports from South Korean media outlet Sisa Journal indicated that major display companies LG Display and Samsung Display have completed the development of Tandem OLED on Silicon (OLEDoS), also known as Micro OLED, and have introduced prototype products internally.
Both companies plan to push for the commercialization of Tandem OLEDoS at an opportune time, aiming to establish a technological advantage in the field of head-mounted display panels.
Tandem OLED is a display technology that includes at least two organic material light-emitting layers, effectively addressing issues of lower brightness and shorter lifespan commonly associated with OLED panels, while also offering higher energy efficiency compared to traditional single-layer OLEDs.
OLEDoS, or silicon-based OLED, utilizes silicon wafers instead of glass panels, significantly enhancing resolution to the thousands of PPI range, making it particularly suitable for devices like XR headsets. For instance, Apple’s Vision Pro headset employs a Micro OLED panel.
The combination of Tandem OLED and OLEDoS technologies can further enhance the display performance of headsets and extend device battery life.
Reportedly, on the path to Tandem OLEDoS technology, the Japan Semiconductor Energy Laboratory previously showcased a 1.5-inch screen sample with a pixel density of 3207 PPI, a brightness of 15000 nits, and a refresh rate of 90Hz.
In the realm of conventional tandem OLEDs, LG Display and Samsung Display have become suppliers of tandem OLED panels for Apple’s new generation of iPad Pro. Additionally, LG Display has launched a series of tandem OLED panels for automotive and laptop applications.
Industry insiders noted that Samsung Display’s large QD-OLED panels could also incorporate tandem OLED technology; however, Samsung Display only succeeded in developing materials that meet specific application needs earlier this year.
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