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:
Oct. 21, 2014
Filed:
Nov. 19, 2010
Yoshimitsu Yamauchi, Osaka, JP;
Yoshimitsu Yamauchi, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A display device which realizes a multi-gradation constant display with low power consumption is provided. A pixel circuitincludes an internal node Nholding a pixel data voltage applied to a display element part, a first switch circuittransferring the pixel data voltage supplied from a data signal line SL to the internal node Nthrough a series circuit of first and second transistor elements Tand T, a second switch circuitincluding a third transistor element Tconnecting a middle node N, at which the first and second transistor elements Tand Tare connected, with a voltage supply line VSL, and a control circuitincluding a series circuit of a fourth transistor element Tand a first capacitive element C, holding the pixel data voltage held in the internal node Nat one end of the first capacitive element Cthrough the fourth transistor element T, and controlling on/off of the third transistor element Tby a boost voltage applied to the other end of the first capacitive element C