Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Reexamination Certificate
2007-08-07
2007-08-07
Wong, Don (Department: 2163)
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Transformer in the supply circuit
C315S291000, C315S167000, C323S224000
Reexamination Certificate
active
10525463
ABSTRACT:
Disclosed are a power supplying apparatus, a backlight assembly and an LCD apparatus having the same. A control section outputs a switching signal so as to control an output of a constant current supplied to a lamp unit in response to on and/or off signals and a dimming signal and a switching section controls an output of a direct current voltage source in response to the switching signal. A power outputting section provides an alternating current voltage source having a constant voltage to the lamp unit. A sensing section senses variation of a power supplied to the lamp unit and a detecting section compares a sensing signal with a predetermined reference signal to output a detecting signal to the control section, thereby maintaining the constant current to be supplied to the lamp unit. Accordingly, the LCD apparatus may prevent deterioration of an image and damage of circuit thereof.
REFERENCES:
patent: 4933605 (1990-06-01), Quazi et al.
patent: 5629588 (1997-05-01), Oda et al.
patent: 5663613 (1997-09-01), Yamashita et al.
patent: 5939830 (1999-08-01), Praiswater
patent: 6051940 (2000-04-01), Arun
patent: 6191539 (2001-02-01), Green
patent: 6307765 (2001-10-01), Choi
patent: 6693396 (2004-02-01), Hsu
patent: 2002/0003525 (2002-01-01), Hwang
patent: 2002/0121865 (2002-09-01), Nakatsuka et al.
patent: 2003/0151931 (2003-08-01), Kohno
patent: 2 316 246 (1998-02-01), None
patent: 9-73989 (1997-03-01), None
PCT International Search Report; International application No. PCT/KR2003/001695; International filing date: Aug. 22, 2003; Date of Mailing: Jul. 12, 2004.
PCT Preliminary Examination Report; International application No. PCT/KR2003/001695; International filing date: Aug. 22, 2003; Date of Completion: Nov. 22, 2004.
Kang Moon-Shik
Kim Joon-Hee
Yoo Hyeong-Suk
Cabucos Marie Antoinette
Cantor & Colburn LLP
Wong Don
Wooyoung Co. Ltd.
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