Backlight driving circuit

Details Backlight driving circuit Backlight driving circuit

2007-06-26

2007-06-26

Tran, Henry N. (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S104000, C315S291000, C362S630000

Reexamination Certificate

active

10733205

ABSTRACT:
A backlight of an LCD device includes a protection circuit that permits leakage of a high voltage to a ground terminal. This high voltage is generated by insertion failures of connectors or other failures caused by damage. The backlight driving circuit includes a high-voltage part applying an A.C. high voltage to a first terminal of a plurality of fluorescent lamps, a low-voltage part applying a lower voltage than that of the high-voltage part to a second terminal of the plurality of fluorescent lamps, a connection part that connects the high-voltage part to the low-voltage part and the protection circuit between the low-voltage part and the connection part.

REFERENCES:
patent: 6094015 (2000-07-01), Wessels et al.
patent: 6812916 (2004-11-01), Hwang
patent: 7077543 (2006-07-01), Nishiyama et al.
patent: WO 01/93644 (2006-12-01), None
Office Action dated Feb. 9, 2007 for corresponding Chinese Patent Application No. 200310113019.9.

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