CMOS-Controlled Color-Tunable Smart Display

被引：50

作者：

Zhang, Shuailong ^{[1
,2
]}

Gong, Zheng ^{[1
]}

McKendry, Jonathan J. D. ^{[1
]}

Watson, Scott ^{[3
]}

Cogman, Andrew ^{[4
]}

Xie, Enyuan ^{[1
]}

Tian, Pengfei ^{[1
]}

Gu, Erdan ^{[1
,2
]}

Chen, Zhizhong ^{[5
]}

Zhang, Guoyi ^{[5
]}

Kelly, Anthony E. ^{[3
]}

Henderson, Robert K. ^{[4
]}

Dawson, Martin D. ^{[1
]}

机构：

[1] Univ Strathclyde, Inst Photon, SUPA, Glasgow G4 0NW, Lanark, Scotland

[2] Wuhan Univ Technol, Joint Lab Adv Optoelect Mat & Devices, State Key Lab, Wuhan, Peoples R China

[3] Univ Glasgow, Sch Engn, Glasgow G12 8LT, Lanark, Scotland

[4] Univ Edinburgh, Sch Engn, Edinburgh EH9 3JL, Midlothian, Scotland

[5] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2012年 / 4卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

Complementary metal-oxide-semiconductor (CMOS); InGaN; microlight-emitting diodes (mu LEDs); color tunability; microdisplay; visible light communications (VLC); LIGHT-EMITTING-DIODES; BLUE; MICRODISPLAYS; DEVICES; ARRAYS; GREEN; POWER;

D O I：

10.1109/JPHOT.2012.2212181

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：

We demonstrate a color-tunable smart display system based on a micropixelated light-emitting diode (mu LED) array made from one InGaN epitaxial structure with high (0.4) indium mole fraction. When integrated with custom complementary metal-oxide-semiconductor (CMOS) electronics and a CMOS driving board with a field-programmable gate array (FPGA) configuration, this mu LED device is computer controllable via a simple USB interface and is capable of delivering programmable dynamic images with emission colors changeable from red to green by tailoring the current densities applied to the mu LED pixels. The color tunability of this CMOS-controlled device is attributed to the competition between the screening of piezo-electric field and the band filling effect. Comparable brightness of the mu LED pixels emitting at different colors was achieved by adjusting the duty cycle. Further measurement suggests that this microdisplay system can also be used for high-speed visible light communications.

引用

页码：1639 / 1646

页数：8

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