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:
Feb. 19, 2013
Filed:
Aug. 28, 2006
Yutaka Sano, Tottori, JP;
Takashi Kunimori, Tottori, JP;
Masanori Yasumori, Tottori, JP;
Toshihiko Tanaka, Tottori, JP;
Yutaka Sano, Tottori, JP;
Takashi Kunimori, Tottori, JP;
Masanori Yasumori, Tottori, JP;
Toshihiko Tanaka, Tottori, JP;
Sony Corporation, Tokyo, JP;
Abstract
A liquid crystal display devicehaving a liquid crystal display panel and an illuminating means controlled according to the output of the light sensing component. The light sensing component is deployed at the periphery of the TFT substrate's display area DA and uses a thin film transistor as photosensor. A capacitor C is connected between source and drain electrodes S, Dfor such TFT photosensor. One of the capacitor's terminals is connected to a standard voltage source Vvia a switch element SW, and the other to the common electrode. Voltage that is always lower than the voltage applied to the common electrode by an amount corresponding to a reverse bias voltage is applied to the gate electrode Gfor the TFT photosensor. The capacitor's voltage a certain time after the switch element turns off is output.