Backlight assembly and liquid crystal display device using...

Details Backlight assembly and liquid crystal display device using... Backlight assembly and liquid crystal display device using...

2006-10-24

2006-10-24

Shankar, Vijay (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S087000, C345S095000, C345S104000

Reexamination Certificate

active

07126576

ABSTRACT:
In a backlight assembly and a liquid crystal display device using the backlight assembly, a lamp assembly is mounted on a receiving container and includes lamps. The lamps are connected in parallel and are turned on by the power voltage supplied from a lamp driving module. Sensors are disposed in the receiving container to face the lamps, and detect operation state of the lamps to output sensing signals. A voltage cut-off module is disposed outside of the receiving container, provides the lamp driving module with a voltage cut-off signal when at least one of the sensing signals has an amplitude smaller than a reference signal. The deterioration of the lamps may be prevented, and the life expectancy of lamps may be increased.

REFERENCES:
patent: 5739803 (1998-04-01), Neugebauer
patent: 6297791 (2001-10-01), Naito et al.
patent: 2004/0174332 (2004-09-01), Kim et al.
patent: 2004/0174333 (2004-09-01), Kim et al.
patent: 2005/0093463 (2005-05-01), Jang et al.

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