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. 30, 2012
Filed:
Mar. 23, 2012
Youichi Tobita, Tokyo, JP;
Youichi Tobita, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A shift register circuit is provided that can decrease a power consumption caused by a clock signal and can achieve a high driving capacity. A unit shift register has a first transistor that activates an output signal when a power supply potential is provided to an output terminal. A pull-up driving circuit for driving the first transistor has a second transistor for providing a clock signal to a node connected to the gate of the first transistor and a boosting circuit for the node. When an output signal of a preceding stage is activated, the second transistor turns on. Thereafter, when the clock signal is activated, and the node is charged, the second transistor turns off. The boosting circuit increases the potential at the node when the second transistor turns off. Therefore, the first transistor can operate in non-saturation region and activate the output signal.