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. 25, 2017
Filed:
Feb. 17, 2014
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Yuhichiroh Murakami, Osaka, JP;
Yasushi Sasaki, Osaka, JP;
Shige Furuta, Osaka, JP;
Shuji Nishi, Osaka, JP;
Makoto Yokoyama, Osaka, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A shift register is configured by connecting unit circuitsin multiple stages. An output transistor Trswitches between whether or not to output a clock signal CKA in accordance with a gate potential. A set transistor Trswitches between whether or not to provide an output of an on-potential output unitto a gate terminal of Trin accordance with an output of a set control unit. The set control unitcontrols a gate terminal of Trinto a floating state in part of a period during which a high-level potential is provided to the gate terminal of Tr. The gate potential of Tris raised by being pushed up, whereby a high-level potential without a threshold drop is provided to the gate terminal of Tr, and rounding of an output signal OUT is decreased when the output signal OUT shifts to a high level. Accordingly, an operation margin with respect to fluctuation of a threshold voltage of the transistor is increased.