Sequential color LED backlight driving system for LCD panels with area control

T. F. Wu, C. C. Chen, C. Y. Wu, P. C. Lu, Y. R. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

In this paper, a sequential color light emitting diode (LED) backlight driving system for liquid crystal display (LCD) panels with area control is proposed. Due to improvement on luminous efficacy, fast response, long life, mercury free, and wide color gamut, LED has gradually substituted for cold cathode fluorescent lamp (CCFL) as backlight. Although some novel CCFLs with low content of mercury and wide color gamut have been proposed, it is difficult to shorten their on-off transition. Recently, a novel display technique, namely area control, requiring backlights with fast response has been proposed to improve the contrast ratio of LCD and reduce power consumption of the backlights. With the area control, a panel is partitioned into several areas, and the back-light brightness of each area is controlled individually. In addition, color sequential display (CSD) is introduced to further reduce the power consumption. A sequential color LED backlight driving system with area control has been built, from which experimental measurements have verified the feasibility of the proposed driving system.

Original languageEnglish
Title of host publicationPESC 07 - IEEE 38th Annual Power Electronics Specialists Conference
Pages2947-2952
Number of pages6
DOIs
Publication statusPublished - 2007
EventPESC 07 - IEEE 38th Annual Power Electronics Specialists Conference - Orlando, FL, United States
Duration: 2007 Jun 172007 Jun 21

Publication series

NamePESC Record - IEEE Annual Power Electronics Specialists Conference
ISSN (Print)0275-9306

Other

OtherPESC 07 - IEEE 38th Annual Power Electronics Specialists Conference
Country/TerritoryUnited States
CityOrlando, FL
Period07-06-1707-06-21

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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