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:
Sep. 12, 2023
Filed:
Dec. 15, 2021
Sharp Kabushiki Kaisha, Sakai, JP;
Yoshihisa Takahashi, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A shift register circuit includes stages each including a unit circuit. The unit circuit includes: an output transistor; an internal node; and a set transistor. Two of the scan signal lines that are adjacent to each other are turned into a selected state for respective, but partially overlapping select periods. The internal node is precharged over a first precharge period by a first transistor that is the set transistor in the unit circuit in at least one of the stages. The internal node is precharged over a second precharge period by a second transistor that is the set transistor in the unit circuit in at least another one of the stages. The first precharge period is shorter than the second precharge period. The first transistor in some or all of the at least one of the stages has a higher current-drive capability than the second transistor.