Nov 5, 2015

GaN-based LED micro-displays for wearable applications

Highlights

We investigate passive matrix (PM) and active matrix (AM) programming mechanisms.
Detailed considerations of system design of GaN LED micro-displays are discussed.
AM LED micro-display system-on-panel with integrated scan and data driving circuits is reported.
Representative images are displayed in green and blue LED micro-displays.

Abstract

LED micro-displays offer diverse applications with their superior characteristics and unique performance, particularly in high light utilization efficiency (LUE), design simplicity, long lifetime, and excellent visibility under bright day-light. In this work, we designed and fabricated GaN-based light emitting diode on silicon (LEDoS) micro-displays by integrating monolithic LED micro-arrays and active matrix substrates using flip-chip technology. The LEDoS micro-displays have been developed in generations with increasing display resolutions and scaled pixel pitches. Representative display images have been demonstrated and show great potential in wearable electronic and photonic applications.

Graphic abstract

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Keywords

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