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:
Apr. 09, 2013
Filed:
Feb. 16, 2009
Akizumi Fujioka, Osaka, JP;
Toshimitsu Gotoh, Osaka, JP;
Akinori Kubota, Osaka, JP;
Masaki Uehata, Osaka, JP;
Akizumi Fujioka, Osaka, JP;
Toshimitsu Gotoh, Osaka, JP;
Akinori Kubota, Osaka, JP;
Masaki Uehata, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal panel with built-in sensorsincludes, in a pixel array, a plurality of pixel circuitsand a plurality of optical sensorswhich are arranged two-dimensionally. Infrared light transmitting filtersthat allow infrared light to pass therethrough and cut off visible light are provided in respective paths of light entering the optical sensors. A backlightincluding white LEDsand infrared LEDsis provided on a back surface of the liquid crystal panel. With this, reflected light of backlight light including infrared light is detected by the optical sensorswithout receiving the influence of visible light, and thus a touch position is detected with high accuracy, irrespective of display data.