High-efficiency micro-LED displays with indistinguishable color shift

被引：4

作者：

Gou, Fangwang ^{[1
]}

Hsiang, En-Lin ^{[1
]}

Tan, Guanjun ^{[1
]}

Chou, Pei-Ting ^{[2
]}

Li, Yun-Li ^{[2
]}

Lan, Yi-Fen ^{[2
]}

Wu, Shin-Tson ^{[1
]}

机构：

[1] Univ Cent Florida, Coll Opt & Photon, CREOL, 4304 Scorpius St, Orlando, FL 32816 USA

[2] PlayNitride Inc, Taiyuan 1st St, Hsinchu 30288, Taiwan

来源：

ADVANCES IN DISPLAY TECHNOLOGIES X | 2020年 / 11304卷

关键词：

Micro-LED; angular color shift; light extraction efficiency; display; LIGHT-EMITTING-DIODES; EMISSION; WELL;

D O I：

10.1117/12.2543223

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Micro-scale light emitting diode (micro-LED) with a chip size less than 100 mu m has improved light extraction efficiency due to increased sidewall emission. However, it causes mismatched angular distributions between AlGaInP-based red micro-LED and InGaN-based blue/green counterparts because of the epitaxial material difference. As a result, color shift of RGB micro-LED displays may become visually noticeable. To address this issue, the angular distributions of RGB micro-LEDs are analyzed theoretically and experimentally. In addition, a device structure with top black matrix and taper angle in micro-LEDs is proposed, which greatly suppresses the color shift while keeping a reasonably high light extraction efficiency.

引用

页数：8

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