Browse > Article

Luminance Properties and Electrical Properties by Applied Frequency of External Electrode Fluorescent Lamp(EEFL)  

Lee, Seong-Jin (원광대 전자재료공학과)
Lee, Jong-Chan (금호전기㈜)
Park, Noh-Joon (원광대학교 전기전자 및 정보공학부)
Park, Dae-Hee (원광대학교 전기전자 및 정보공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.56, no.2, 2007 , pp. 355-360 More about this Journal
Abstract
The recent TFT-LCD Trend that is done large size gradually. As size of monitor great, though problem happens, it is that consumer's request which it makes monitor combined TV function. Monitor and TV are no difference externally greatly, but define difference happens as for backlight. An external electrode fluorescent lamp (EEFL) has an advantage of a long lifetime in the early stages of the study on plasma discharge, interest in the lamp continues. Researches on the operation of external electrode fluorescent lamps have focused mainly on its use of a type of high frequency (MHz). By performing high Luminance using a square wave operation method with the low frequency below 100kHz, which is applied to a narrowed tube type lamp that has several mm of lamp diameter, EEFL presented the possibility of using it as a light source for back-lights. However, because EEFL generates plasma using wall charges, which considers the impedance characteristics of glass based on the structural principle in discharge, it can be significantly affected by frequency. Thus, this study verified the change in the characteristics of electromagnetic fields according to the change in frequency through a Maxwell electromagnetic field simulation and examined the relationship between the change in the EEFL frequency and Luminance by measuring the optical characteristics.
Keywords
External Electrode Fluorescent Lamp; LCD; BLU; Frequency;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 권남옥, 김영미, 김성중, 조태승, 최은하, 조광섭, 김봉수, 천장호, 강준길, '외관전극 형광램프 백라이트의 자시방전 동기화 구동; 새물리, 46, 27-282, 2002
2 조태승. 김영미, 권남옥, 김성중, 강준길, 최은하, 조광섭, '외관전극 형광램프의 전극 길이 효과', 새물리 , 44, 42-47,2002
3 J. J. Thomson, Philosophical Magazine, 32, 32, 1891
4 Cho T Set., J. Appl. Phys. 41L355, 2002
5 Guangsup Cho, Jooyoung Lee, Deaheung Lee, Jehuan Koo, Eunha Choi, Bongsoo Kim, Sanghun Lee, Minsoon Pak, Junegill Kang and John P Verboncoeur, 'Pinhole formation in capacitively coupled external electrode fluorescent lamps', J. Phys. D: Appl. Phys. 37 2863-2867, 2004   DOI   ScienceOn
6 조성구, ' LCLCD 백라이트를 위한 멀티램프 구동용 압전 인버터 설계', 전남대학교 석사학위청구논문, 2005
7 C. Bencking, J. Appl. Phys. 68, 1, 1990
8 T. S. Cho, Y. M. Kim, N. O. Kwon, S. J. Kim, J. G. Kang, E. H. Choi and G. S. cho, Jpn. J. Appl. Phys. 41, part 2, No. 3B, p.L355, 2002
9 Vikram Singh, John Holland, 'Modeling and Experimental studies of a Transformer Coupled Plasma(TCPTM) Source design for Large area plasma processing, IEEE TRANSACTION ON PLASMA SCIENCE, Vol. 24, No.1, 1996
10 G. I. Babat, J. IEE, 94, Pt. 3, p.27, 1947
11 N. Kwon, Y. Kim, H. Kim, S. Kim, D. Gill, T. Cho, Y. Kim, J. Ko, E. Choi, G. Cho, B. Hong, H. Sohn and B. Yu, Preceedings of the 21st International Display Research Conference in conjunction with 8th International Display Workshop, p.625, 2001
12 김성중, '고휘도, 고효율EEFL Backlight 에 대한 연구' 광운 대학교 석사학위논문, 2002