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 journalArticle

17 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.
LanguageEnglish
Pages1639 - 1646
Number of pages8
JournalIEEE Photonics Journal
Volume4
Issue number5
Early online date7 Aug 2012
DOIs
Publication statusPublished - Oct 2012

Fingerprint

CMOS
Display devices
Color
color
Metals
Pixels
pixels
field-programmable gate arrays
display devices
Printed circuit boards
Indium
Interfaces (computer)
Light emitting diodes
indium
optical communication
Field programmable gate arrays (FPGA)
Luminance
Screening
brightness
Current density

Keywords

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

Cite this

Zhang, Shuailong ; Gong, Zheng ; McKendry, Jonathan ; Watson, Scott ; Cogman, Andrew ; Xie, Enyuan ; Tian, Pengfei ; Gu, Erdan ; Chen, Zhizhong ; Zhang, Guoyi ; Kelly, Anthony ; Henderson, Robert ; Dawson, Martin. / CMOS-controlled color-tunable smart display. In: IEEE Photonics Journal. 2012 ; Vol. 4, No. 5. pp. 1639 - 1646.
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Zhang, S, Gong, Z, McKendry, J, Watson, S, Cogman, A, Xie, E, Tian, P, Gu, E, Chen, Z, Zhang, G, Kelly, A, Henderson, R & Dawson, M 2012, 'CMOS-controlled color-tunable smart display' IEEE Photonics Journal, vol. 4, no. 5, pp. 1639 - 1646. https://doi.org/10.1109/JPHOT.2012.2212181

CMOS-controlled color-tunable smart display. / Zhang, Shuailong; Gong, Zheng; McKendry, Jonathan; Watson, Scott; Cogman, Andrew; Xie, Enyuan; Tian, Pengfei; Gu, Erdan; Chen, Zhizhong; Zhang, Guoyi; Kelly, Anthony; Henderson, Robert; Dawson, Martin.

In: IEEE Photonics Journal, Vol. 4, No. 5, 10.2012, p. 1639 - 1646.

Research output: Contribution to journalArticle

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