Reportedly, Samsung Display is looking to cooperate with APS Holdings to make an FMM (Fine Metal Mask) with a pixel density of 3500 PPI (Pixels Per Inch). The main agenda is to bring RGB OLEDoS required for VR/AR devices. For your information, the APS Holdings unveiled 3000 PPI level OLEDoS at the end of last year.
This new Oledos will be used for virtual reality (VR) and augmented reality (AR) devices that surely needed ultra-high resolution screens.
Technical requirements for AR/VR displays
- Fine Pixel Size
- High Refresh Rate
- High Resolution
Oledos, which deposits an organic light emitting diode (OLED) on a silicon substrate, is largely divided into two methods. LG Display is developing ‘WOLED+CF’ method OLEDOS that forms RGB color filters (CF) on white (W)-OLED. The white light emitted from the W-OLED passes through the RGB color filter to realize color.
iPhone maker Apple has already requested Samsung Display and LG Display to develop 3500 PPI OLEDOS. Apple previously requested the development of 2800 PPI level Oledos, but raised it to 3500 PPI.
At the end of last year, APS Holdings explained, “The core of ultra-high-resolution FMM is hole processing technology and ultra-thin invar (nickel-iron special alloy).” “We have been operating our own ultra-thin invar processing line since 2018,” he added, adding, “It is an 8 micrometer (um) thick product using Invar’s own technology for FMM at the level of 3000PPI.” The thickness of the invar for FMM currently used in QHD smartphone OLED is 18um.
The company also stated, “To develop a 3000PPI level FMM, we improved the existing laser processing machine to support up to 4000PPI or more.” In addition, he added, “Based on FMM, we can develop deposition and encapsulation process technologies to produce RGB-type Oledos display panels. there is.
However, LG Display is working on developing WOLED+CF type OLEDOS. Samsung Display already developing Oledos from the middle of last year.
