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Design and Application of CCFL Drive Inverter Transformer for LCD Backlight  

Cho, Sang-Ho (국민대 전자공학과)
Han, Sang-Kyoo (국민대 전자정보통신공학부)
Hong, Sung-Soo (국민대 전자정보통신공학부)
SaKong, Sug-Chin (국민대 전자정보통신공학부)
Kwon, Gi-Hyun (삼성전기㈜ P&M 사업부)
Lee, Hyo-Bum (삼성전기㈜ P&M 사업부)
Roh, Chung-Wook (국민대 전자정보통신공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.13, no.2, 2008 , pp. 96-102 More about this Journal
Abstract
In a large screen sized LCD-TV, a backlight system with only one cold cathode fluorescent lamp(CCFL) can not meet brightness specification. Thus, considerable numbers of CCFLs are used to meet brightness specification. In this paper, the design guide for the inverter transformer which can drive 4 CCFLs instantaneously is presented. With the presented design, the inverter transformer that guarantee identical lamp currents under the nonidentical lamp characteristic condition, can be implemented easily. The developed inverter transformer is adopted in a 42" LCD-TV backlight. The experimental results are presented to show the validity of the presented design guide.
Keywords
LCD Backlight; CCFL; Inverter transformer;
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  • Reference
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