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:
Jan. 13, 2015
Filed:
Sep. 22, 2011
Hiroyuki Higashijima, Konosu, JP;
Takahiro Ochiai, Chiba, JP;
Mitsuru Goto, Chiba, JP;
Japan Display Inc., Tokyo, JP;
Panasonic Liquid Crystal Display Co., Ltd., Himeji-shi, JP;
Abstract
In a unit drive circuit in each stage in a shift register, a transistor which is maintained in ON state during a period where the unit drive circuit in the stage does not perform an outputting operation is configured not to generate Vth shift. As switches, transistors TA, TB are connected between the output terminal OUT and AC power sources VA, VB. At least one of TA, TB is brought into ON state and TA, TB are alternately brought into OFF state during the period other than the outputting operation period. VA, VB supply L level during a period where TA, TB are in ON state, while VA, VB supply a ground potential GND which is an intermediate potential between an H level and an L level during a period where TA, TB are in OFF state.