The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9159291 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 13, 2015

Filed:

May. 09, 2006
Applicants:

Shunpei Yamazaki, Tokyo, JP;

Jun Koyama, Kanagawa, JP;

Yoshifumi Tanada, Kanagawa, JP;

Mitsuaki Osame, Kanagawa, JP;

Hajime Kimura, Kanagawa, JP;

Ryota Fukumoto, Kanagawa, JP;

Hiromi Yanai, Kanagawa, JP;

Inventors:

Shunpei Yamazaki, Tokyo, JP;

Jun Koyama, Kanagawa, JP;

Yoshifumi Tanada, Kanagawa, JP;

Mitsuaki Osame, Kanagawa, JP;

Hajime Kimura, Kanagawa, JP;

Ryota Fukumoto, Kanagawa, JP;

Hiromi Yanai, Kanagawa, JP;

Assignee:

Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); G09G 3/20 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3688 (2013.01); G09G 3/20 (2013.01); G09G 2310/0294 (2013.01); G09G 2320/0271 (2013.01); G09G 2340/0428 (2013.01); G09G 2360/144 (2013.01); G09G 2370/08 (2013.01);
Abstract

The liquid crystal display device performs display by changing the number of gray scales depending on external light intensity, and switches the display mode in accordance with a content to be displayed on a display. By controlling a display mode-specific video signal generation circuit depending on external light intensity, an inputted video signal is outputted as an analog value, is outputted with a digital value of a binary, or is outputted with a multiple digital value. As a result, display gradation of a pixel changes timely. Accordingly, a clear image can be displayed. For example, a display device which secures visibility can be obtained in a wide range from under fluorescent light in a dark place or indoor to under outdoor sunlight.


Find Patent Forward Citations

Yamazaki, Shunpei. (2015). Liquid crystal display device, method for driving thereof and electronic apparatus (U.S. Patent No. 9159291). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9159291

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