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.:
Date of Patent:
Dec. 22, 2009
Filed:
May. 16, 2006
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;
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;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-si, Kanagawa-ken, JP;
Abstract
It is an object of the present invention to provide a display device in which images can be seen under a dark place to intense external light. In the display device, display is performed by changing the gray scale number depending on external light intensity, and display modes can be switched depending on contents displayed on the screen. An analog mode and a digital mode are switched depending on external light intensity. In an analog digital switching circuit, when a video signal is an analog value, a signal is outputted to a pixel array without any change and, when the video signal is a digital value, the signal is outputted to a circuit that performs a digital operation such as a latch circuit. Consequently, display gray scales of a pixel are changed appropriately. Accordingly, a clear image can be displayed. For example, it is possible to ensure visibility in a wide range of a dark place or under indoor florescent light to outdoor sun light.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile