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In this paper, some of the technological bottlenecks of the micro‐light‐emitting diode (µLED) for a micro‐display were reviewed. Although there remain other issues, the µLED technology has a potential for some micro‐display applications which especially demand high brightness and reliability such as augmented reality (AR) display, automotive head‐up display (HUD), and so on. The efficiency of µLED...
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