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. 25, 2011
Filed:
May. 04, 2006
Tae-gyu Kim, Suwon-si, KR;
Tae-Gyu Kim, Suwon-si, KR;
Samsung Mobile Display Co., Ltd., Yongin, KR;
Abstract
A shift register includes a sampling circuit to sample an input signal in response to a start pulse and two clock signals having different duty ratios from each other, a holding circuit to hold the input signal in response to an output signal of the sampling circuit and the two clock signals, an inverter to invert the output signal of the sampling circuit or the holding circuit, and a NAND gate to receive the output signal of the sampling circuit or the holding circuit and the output signal of the inverter and perform a logical operation on the received output signals to output an output signal. The first clock signal has a duty ratio smaller than the second clock signal. The sampling circuit and the holding circuit have a three-stack structure in which three transistors are coupled with one another in series.