Application of Soft-Starting Technique to Improve Digital-Dimming Behavior for Backlight Module

Chang Hua Lin*, Liang Rui Chen, Kai Jun Pai

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


This paper proposes a simple control method to improve the ignition behavior of cold cathode fluorescent lamp in digital-dimming control. The half-bridge resonant inverter is employed in the presented backlight system. To extend the lamp life, we realize a digital-dimming controller with soft-starting technique (DDC-SST) to reduce the high ignition voltage and to eliminate the ignition current spike. Complete analysis and design considerations are discussed in detail in this paper. Simulation and experimental results are close to the theoretical prediction. The overall efficiency of the system achieved at the rated power is over 91%. The ignition voltage is reduced about 30% without any lamp current spike occurred under digital-dimming operation.

Original languageEnglish
Pages (from-to)727-732
Number of pages6
JournalINTELEC, International Telecommunications Energy Conference (Proceedings)
Publication statusPublished - 2003
Externally publishedYes
EventThe 25th International Telecommunications Energy Conference - Yokohama, Japan
Duration: 2003 Oct 192003 Oct 23

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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