Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2007.06a
- /
- Pages.428-428
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- 2007
Comparis on of Optical Characteristics between CCFL and EEFL in Direct-Type Backlight Unit
직하형 백라이트에서의 CCFL과 EEFL의 광학특성 비교
- Kim, Byoung-Yong (Yonsei Univ.) ;
- Kim, Jong-Yeon (Yonsei Univ.) ;
- Kim, Young-Hwan (Yonsei Univ.) ;
- Lee, Sang-Keuk (Yonsei Univ.) ;
- Kim, Jong-Hwan (Yonsei Univ.) ;
-
Han, Jeong-Min
(Yonsei Univ.)
;
- Ok, Chul-Ho (Yonsei Univ.) ;
-
Seo, Dae-Shik
(Yonsei Univ.)
- 김병용 (연세대학교) ;
- 김종연 (연세대학교) ;
- 김영환 (연세대학교) ;
- 이상극 (연세대학교) ;
- 김종환 (연세대학교) ;
-
한정민
(연세대학교)
;
- 옥철호 (연세대학교) ;
-
서대식
(연세대학교)
- Published : 2007.06.21
Abstract
In this study, It was studied about the luminance characteristics of 17inch direct-type back light using EEFL(External Electrode Fluorescent Lamp). EEFI has a long life time because the electrode is installed outside of lamp. And it is produced low price than conventional CCFL. It does not need process of installing internal electrode. But EEFL technology has several problems such as difficulty of design driving inverter, and prevents leckage current along the skin of lamps. Therefore, by the optimizing of inverter properties, 7525 nit center luminance was acquired in almost same power consumption condition. It was almost same luminance in CCFL backlight unit. And it was operated stably in low operating temperature such as the value of