Display device

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United States of America Patent

PATENT NO 6753854
SERIAL NO

09558054

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A liquid crystal display device having a digital driver is provided, which can realize higher definition and more gradations. A liquid crystal display device having a pixel region in which a plural number of pixel TFTs are arranged in a matrix shape, a source driver and a gate driver for driving the plural number of TFTs, and a circuit for converting externally inputted m-bit digital video data into 2.sup.m-n pieces of n-bit digital video data (where m and n are both positive integers greater than or equal to 2, and m>n), and for supplying the n-bit digital video data to the source driver, is provided. The liquid crystal display device is characterized in that the 2.sup.m-n pieces of n-bit digital data is outputted randomly, and in that a one-frame image is formed by displaying 2.sup.m-n subframes formed by the n-bit digital data.

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Patent Owner(s)

Patent OwnerAddress
SEMICONDUCTOR ENERGY LABORATORY CO LTD398 HASE ATSUGI-SHI KANAGAWA 2430036 ?2430036

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayashi, Keisuke Kanagawa, JP 54 895
Koyama, Jun Kanagawa, JP 1634 57063

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