Power supply system and liquid crystal display device having...

Details Power supply system and liquid crystal display device having... Power supply system and liquid crystal display device having...

2007-03-27

2007-03-27

Vu, David (Department: 2821)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C315S169300

Reexamination Certificate

active

10960400

ABSTRACT:
A power supply system has a power supply unit generating a power supply voltage signal, a voltage controller generating a first power supply control signal in response to the power supply voltage signal and a lamp-on/off signal, an inverter controller being driven in response to the first power supply control signal, and an inverter driving a lamp in response to a control signal from the inverter controller. The first power supply control signal prevents the inverter from being shut down. The voltage controller includes a comparator comparing a comparison voltage signal with a reference signal, a switch unit being turned on or off in response to the lamp-on/off signal and an output signal of the comparator, and a constant voltage generator providing a constant voltage signal as the first power supply control signal to the inverter controller. A liquid crystal display device has a timing controller, gate and data drivers, a display panel, a lamp unit, and the power supply system for providing electric power to the lamp unit.

REFERENCES:
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patent: 7019728 (2006-03-01), Lee et al.
patent: 2002/0130830 (2002-09-01), Park
patent: 2003/0038770 (2003-02-01), Lee et al.
patent: 01/98853 (2001-12-01), None
European Search Report for Application No.: 04256375.9-1239; Dated: Sep. 26, 2006.

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