The characteristics of GaN-based blue LED on Si substrateO

Highlights

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We investigate passive matrix (PM) and active matrix (AM) programming mechanisms.

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Detailed considerations of system design of GaN LED micro-displays are discussed.

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AM LED micro-display system-on-panel with integrated scan and data driving circuits is reported.

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Representative images are displayed in green and blue LED micro-displays.

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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.

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Graphic abstract

Keywords

• LED micro-display; 
• Wearable devices; 
• Active matrix display
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  • Source:Sciencedirect
    
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