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. 10, 2019
Filed:
Apr. 21, 2016
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Yuhichiroh Murakami, Sakai, JP;
Shige Furuta, Sakai, JP;
Hidekazu Yamanaka, Sakai, JP;
Yasushi Sasaki, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A unit circuitof a shift register is provided with a transistor Trfor supplying an off potential to a node nvia a drain terminal when performing an all-on output. An all-on control signal AON is supplied to a gate terminal of the transistor Tr. Instead of a low level potential VSS supplied from a power supply circuit, an initialization signal INIT which becomes a low level when performing the all-on output supplied to a source terminal of the transistor Tr. Since the all-on signal AON and the initialization signal INIT are supplied from an outside, even if noise is imposed on the low level potential VSS when performing the normal operation, the transistor Trdoes not turn on and charge does not escape from the node. With this, it is possible to prevent malfunction of the shift register due to noise imposed on the off potential supplied from the power supply circuit.