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2025-03-31 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > IT Information >
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CTOnews.com January 2 news, South Korean display and semiconductor equipment manufacturer APS Holdings said that it has developed a resolution of 3000ppi on silicon OLED (OLEDoS).
The company developed an OLEDoS screen for 1000ppi in early 2022. OLEDoS deposits OLED on silicon wafers and is developing for AR and VR devices.
APS Holdings's OLEDoS uses RGB emission layers, while other companies that develop OLEDoS also use white emission layers and RGB color filters.
The South Korean company has been developing fine metal masks (FMM) for ultra-high resolution OLEDoS. Its subsidiary, APS Materials, handles the deposition and packaging process at a factory in Tian'an. The company is developing FMM that uses laser patterns rather than commercial etching methods.
APS Holdings has claimed in the past that the resolution achieved by etching is limited. The FMM for 3000ppi OLEDoS is made of Invar, which is only 8 microns thick, it said. "this is much thinner than the FMM of the OLED used to make QHD smartphones, which is 18 microns thick."
CTOnews.com learned that the goal of APS Holdings is to improve the resolution of OLEDoS to 4000ppi. This is part of a government-supported project to develop a prototype of 4000ppi's AR glasses by 2024.
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