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Prospects and challenges of mini‐LED and micro‐LED displays
Authors:Yuge Huang  Guanjun Tan  Fangwang Gou  Ming‐Chun Li  Seok‐Lyul Lee  Shin‐Tson Wu
Abstract:We review the emerging mini/micro–light‐emitting diode (LED) displays featuring high dynamic range and good sunlight readability. For mini‐LED backlit liquid crystal displays (LCDs), we quantitatively evaluate how the device contrast ratio, local dimming zone number, and local light profile affect the image quality. For the emissive mini/micro‐LED displays, the challenges of ambient contrast ratio and size‐dependent power efficiency are analyzed. Two figure‐of‐merits are proposed for optimizing the optical and electrical performances of mini/micro‐LED displays.
Keywords:ambient contrast ratio  halo effect  high‐dynamic range  internal quantum efficiency  local dimming  mini/micro‐LED  size effect  sunlight readability
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