Abstract
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 needs to be improved, and an integration technology for active matrix driving and technologies for full‐color realization as well as defective pixel control must be developed. An optimum specification of a µLED display was proposed to maximize reality in micro‐display products.
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