Backlight device and liquid crystal display apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7318664
APP PUB NO 20070086181A1
SERIAL NO

11612812

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A light dimming dot pattern is provided for an LCD in which the diameter of dots is changed in a range from approximately 0.16 mm to approximately 0.65 mm depending on the distance of the dots from a fluorescent tube (13) in such a manner that the volume of the shielded light is increased and decreased at a location close to a position overlying the fluorescent tube (13) and at a location remote from the fluorescent tube (13), respectively. In this manner, a light dimming dot pattern with a transmittance for all light rays of approximately 62% (roughly in the vicinity of 62%), higher than the transmittance for all light rays in the conventional technique not higher than 50%, is produced. Consequently, the light of uniform high luminance may be produced without raising the luminance of the fluorescent tube (13), and hence an LCD of high luminance may be realized.

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Patent Owner(s)

Patent OwnerAddress
SONY CORPORATION1-7-1 KONAN MINATO-KU TOKYO 1080075 ?1080075

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hatanaka, Masato Saitama, JP 17 535
Iida, Kouji Chiba, JP 7 364
Kito, Shinsuke Kanagawa, JP 2 252
Maruyama, Yuichiro Tokyo, JP 4 273
Miyamura, Seiji Kanagawa, JP 2 236
Oku, Takashi Saitama, JP 27 680
Yamada, Sinobu Tokyo, JP 2 252
Yokota, Kazuhiro Saitama, JP 37 408

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