Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

2008-07-29

2008-07-29

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C349S061000

Reexamination Certificate

active

07405721

ABSTRACT:
According to the present invention, in a liquid crystal display device which intermittently drives (burst driving) a light source device having a discharge tube which is arranged to face a main surface of a liquid crystal display panel in an opposed manner and is turned on in response to an alternating electric field, the resistance between first and second active elements which constitute a resonance circuit at a primary side of a driving circuit of the light source device and the reference potential in the driving circuit is set higher when burst driving of the discharge tube assumes the turn-OFF state than when the burst driving of the discharge tube assumes the turn-ON state. Due to such a constitution, it is possible to lower the luminance when the burst driving is in the turn-OFF state than when the burst driving is in the turn-ON state without extinguishing the discharge tube when the burst driving is off whereby it is possible to suppress blurring of motion picture s whereby blurring of the motion picture can be suppressed and luminance of the image can be increased.

REFERENCES:
patent: 4495445 (1985-01-01), Turney
patent: 5818172 (1998-10-01), Lee
patent: 5844540 (1998-12-01), Terasaki
patent: 5907222 (1999-05-01), Lengyel et al.
patent: 6856519 (2005-02-01), Lin et al.
patent: 02 010698 (1990-01-01), None

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