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:
Jul. 05, 2016
Filed:
Jul. 26, 2011
Kohei Tanaka, Osaka, JP;
Yasuhiro Sugita, Osaka, JP;
Kohei Tanaka, Osaka, JP;
Yasuhiro Sugita, Osaka, JP;
SHARP KABUSHIKI KAISHA, Osaka, JP;
Abstract
A display device including optical sensors in a pixel region, in which the number of bus lines for supplying driving signals to the optical sensors is reduced, is provided. The display device includes a display pixel circuit () and a sensor pixel circuit () that are provided in a pixel region () of an active matrix substrate. The sensor pixel circuit () includes: a light receiving element (D); an accumulation node for accumulating charges corresponding to an amount of light incident on the light receiving element (D); and a readout switching element (T) that reads out charges in the accumulation node. The display device further includes; a driving circuit that supplies a sensor driving signal for controlling a resetting operation and an accumulating operation of the accumulation node, to the sensor pixel circuit (), via a source line (SL) for supplying a display data signal to the display pixel circuit (); and a protection switching element (M), (M) connected to a sensor control line (EL) provided in addition to the source line (SL), the protection switching element protecting the sensor signal of the sensor pixel circuit.