Integrated ambient light sensor on a LED driver chip

Jian Fu Wu, Chia-Ling Wei, Yuan Ta Hsieh, Chiao Li Fang, Hann Huei Tsai, Ying Zong Juang

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

8 Citations (Scopus)

Abstract

This paper presents a boost-type light-emitting-diode (LED) driver with an on-chip ambient light dimming for the liquid crystal display (LCD) backlight module in portable electronics. The proposed system integrates an ambient light sensor (ALS) to achieve the function of dimming control. By sensing the surrounding illumination, the LED driver automatically regulates the LED current, and, hence, the power dissipation of LED backlight module can be effectively reduced. As a result, the battery life can be extended.

Original languageEnglish
Title of host publication2011 IEEE 9th International Conference on Power Electronics and Drive Systems, PEDS 2011
Pages944-947
Number of pages4
DOIs
Publication statusPublished - 2011 Dec 1
Event2011 IEEE 9th International Conference on Power Electronics and Drive Systems, PEDS 2011 - Singapore, Singapore
Duration: 2011 Dec 52011 Dec 8

Publication series

NameProceedings of the International Conference on Power Electronics and Drive Systems

Other

Other2011 IEEE 9th International Conference on Power Electronics and Drive Systems, PEDS 2011
CountrySingapore
CitySingapore
Period11-12-0511-12-08

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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