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:
May. 10, 2016
Filed:
Jun. 08, 2010
Yasuhiro Sugita, Osaka, JP;
Kohhei Tanaka, Osaka, JP;
Kaoru Yamamoto, Osaka, JP;
Hiromi Katoh, Osaka, JP;
Yasuhiro Sugita, Osaka, JP;
Kohhei Tanaka, Osaka, JP;
Kaoru Yamamoto, Osaka, JP;
Hiromi Katoh, Osaka, JP;
SHARP KABUSHIKI KAISHA, Osaka, JP;
Abstract
A plurality of first sensor pixel circuits each sensing light during a sensing period when a backlight is turned on and retaining the amount of sensed light otherwise in accordance with a clock signal and a plurality of second sensor pixel circuits each sensing light during a sensing period when the backlight is turned off and retaining the amount of sensed light otherwise in accordance with a clock signal are arranged in a pixel region. The sensor pixel circuits of two types are connected to different output lines, so that a difference between two output signals is obtained at the outside of the sensor pixel circuit. The sensor pixel circuits described above are used for detecting a difference between an amount of light to be incident when the backlight is turned on and an amount of light to be incident when the backlight is turned off.