Digital dimmable controller in CCFL module based on variable frequency technique

Author

Feng Ran ; Tiezhu Li ; Meihua Xu ; Jian Wu

Author_Institution

Key Lab. of Adv. Displays & Syst. Applic., Shanghai Univ., Shanghai

fYear

2008

fDate

28-31 July 2008

Firstpage

1

Lastpage

4

Abstract

A novel simple control method to improve the ignition behavior of cold cathode fluorescent lamp (CCFL) in digital-dimming mode is proposed in this paper. To extend the lamp life, we designed a digital-dimming controller (DDC) in cold cathode fluorescent lamp based on variable frequency technique. The design was simulated by Cadence Spectre. It is effective to eliminate the ignition current spike and reduce the high ignition voltage.

Keywords

cathodes; digital circuits; digital control; fluorescent lamps; lighting control; variable-frequency oscillators; Cadence Spectre; cold cathode fluorescent lamp; digital-dimming controller; ignition current; ignition voltage; variable frequency technique; variable-frequency oscillator; Cathodes; Circuits; Computer displays; Digital control; Flat panel displays; Fluorescent lamps; Frequency; Ignition; Liquid crystal displays; Voltage control; Backlight; CCFL; DDC; frequency-shift;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Packaging Technology & High Density Packaging, 2008. ICEPT-HDP 2008. International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-2739-0

Electronic_ISBN

978-1-4244-2740-6

Type

conf

DOI

10.1109/ICEPT.2008.4607006

Filename

4607006