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High‐resolution and high‐brightness full‐colour “Silicon Display” for augmented and mixed reality
Author(s) -
Kawanishi Hidenori,
Onuma Hiroaki,
Maegawa Masumi,
Kurisu Takashi,
Ono Takashi,
Akase Shigeyuki,
Yamaguchi Shinji,
Momotani Naoto,
Fujita Yusuke,
Kondo Yuhei,
Kubota Kentaro,
Yoshida Toshimi,
Ikawa Yuta,
Ono Tsuyoshi,
Higashisaka Hiroyoshi,
Hirano Yasuaki,
Anzai Shinsuke
Publication year - 2021
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1002/jsid.968
Subject(s) - mixed reality , computer science , augmented reality , brightness , full color , computer graphics (images) , materials science , computer vision , optoelectronics , optics , physics
High‐brightness micro‐LED display bonded onto silicon backplane has been successfully demonstrated. The 0.38‐inch full‐colour active matrix LED microdisplay system consists of 352 × 198 pixels. Each pixel is 24 μm square composed of red, green, and blue (RGB) subpixels corresponding to a pixel resolution of 1053 ppi. Quantum‐dot materials are formed on III‐nitride blue micro‐LED array to convert blue light into red and green for full‐colour operation. We have confirmed that this microdisplay, which we call “Silicon Display” has wide colour gamut exceeding 120% of sRGB. We describe the advantage of this colour‐converting approach for the full‐colour micro‐LEDs. Progress toward higher resolution is also described. Brightness of more than 30 000 cd/m 2 has been confirmed at a driving current density of 4 A/cm 2 for 3000 ppi blue monochrome micro‐LED prepared for full‐colour Silicon Display. We believe our “Silicon Display” is ideally suited for near‐to‐eye displays for augmented and mixed reality.