CMOS-controlled color-tunable smart display

Shuailong Zhang; Zheng Gong; Jonathan McKendry; Scott Watson; Andrew Cogman; Enyuan Xie; Pengfei Tian; Erdan Gu; Zhizhong Chen; Guoyi Zhang; Anthony Kelly; Robert Henderson; Martin Dawson

doi:10.1109/JPHOT.2012.2212181

CMOS-controlled color-tunable smart display

Shuailong Zhang, Zheng Gong, Jonathan McKendry, Scott Watson, Andrew Cogman, Enyuan Xie, Pengfei Tian, Erdan Gu, Zhizhong Chen, Guoyi Zhang, Anthony Kelly, Robert Henderson, Martin Dawson

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

We demonstrate a color-tunable smart display system based on a micropixelated light-emitting diode µLED 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 µLED 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 µLED 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 µLED 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.

Original language	English
Pages (from-to)	1639 - 1646
Number of pages	8
Journal	IEEE Photonics Journal
Volume	4
Issue number	5
Early online date	7 Aug 2012
DOIs	https://doi.org/10.1109/JPHOT.2012.2212181
Publication status	Published - Oct 2012

Keywords

photonics
CMOS integrated circuits
color tunability
microdisplays
microlight-emitting diodes
visible light communications

Access to Document

10.1109/JPHOT.2012.2212181

Cite this

@article{8ee48e6f54424eee877afe077c0c3020,

title = "CMOS-controlled color-tunable smart display",

abstract = "We demonstrate a color-tunable smart display system based on a micropixelated light-emitting diode µLED 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 µLED 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 µLED 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 µLED 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.",

keywords = "photonics, CMOS integrated circuits, color tunability, microdisplays, microlight-emitting diodes, visible light communications",

author = "Shuailong Zhang and Zheng Gong and Jonathan McKendry and Scott Watson and Andrew Cogman and Enyuan Xie and Pengfei Tian and Erdan Gu and Zhizhong Chen and Guoyi Zhang and Anthony Kelly and Robert Henderson and Martin Dawson",

year = "2012",

month = oct,

doi = "10.1109/JPHOT.2012.2212181",

language = "English",

volume = "4",

pages = "1639 -- 1646",

journal = "IEEE Photonics Journal",

issn = "1943-0655",

number = "5",

}

TY - JOUR

T1 - CMOS-controlled color-tunable smart display

AU - Zhang, Shuailong

AU - Gong, Zheng

AU - McKendry, Jonathan

AU - Watson, Scott

AU - Cogman, Andrew

AU - Xie, Enyuan

AU - Tian, Pengfei

AU - Gu, Erdan

AU - Chen, Zhizhong

AU - Zhang, Guoyi

AU - Kelly, Anthony

AU - Henderson, Robert

AU - Dawson, Martin

PY - 2012/10

Y1 - 2012/10

N2 - We demonstrate a color-tunable smart display system based on a micropixelated light-emitting diode µLED 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 µLED 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 µLED 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 µLED 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.

AB - We demonstrate a color-tunable smart display system based on a micropixelated light-emitting diode µLED 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 µLED 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 µLED 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 µLED 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.

KW - photonics

KW - CMOS integrated circuits

KW - color tunability

KW - microdisplays

KW - microlight-emitting diodes

KW - visible light communications

UR - http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6262439

U2 - 10.1109/JPHOT.2012.2212181

DO - 10.1109/JPHOT.2012.2212181

M3 - Article

SN - 1943-0655

VL - 4

SP - 1639

EP - 1646

JO - IEEE Photonics Journal

JF - IEEE Photonics Journal

IS - 5

ER -

CMOS-controlled color-tunable smart display

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this