In contrast to traditional OLED displays found in mobile phones and TVs, OLED microdisplays present distinct challenges. Despite their reduced panel size, achieving high resolution is crucial, resulting in pixel sizes of only a few micrometers and gaps between pixels less than 1 micrometer. In this presentation, we will delve into OLED device technology, focusing on achieving high luminance and a wide color gamut, while considering the unique characteristics of microdisplays. A noteworthy demonstration involved a 3000 pixels-per-inch (ppi) OLED microdisplay with a color gamut of 130.2% based on the sRGB standard. This achievement is attributed to a thoughtful combination of light-emitting materials, OLED device structure, and subpixel arrangement.
This work was supported by Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korea government(MSIT) (No.2022-0-00026, Near-eye light field device technology development for hyper-realistic metaverse service)
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