Liquid crystal display device having an improved lighting device

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United States of America Patent

PATENT NO 7138974
SERIAL NO

10636612

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Abstract

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A liquid crystal display device includes a liquid crystal display panel having plural pixels, a lighting device having at least one light source and projecting light generated by the light source on the liquid crystal display panel, and a circuit supplying a first current during a first period and a second current smaller than the first current during a second period to the light source alternately. The circuit includes a current monitoring circuit which measures the first current and the second current, and a light control circuit which adjusts a ratio of the first period to the second period based upon a signal from the current monitoring circuit.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC LIQUID CRYSTAL DISPLAY CO LTDJAPAN HYOGO PREFECTURE HYOGO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirakata, Junichi Chiba, JP 89 3282
Ono, Kikuo Mobara, JP 244 5729
Shingai, Akira Chiba, JP 11 498

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