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:
Nov. 01, 2011
Filed:
Mar. 29, 2009
Yuan-hsin Tsou, Kaohsiung County, TW;
Yuan-Hsin Tsou, Kaohsiung County, TW;
Chunghwa Picture Tubes, Ltd., Bade, Taoyuan, TW;
Abstract
A gate driving circuit capable of suppressing threshold voltage drift is disclosed for providing gate signals forwarded to gate lines. The gate driving circuit includes a plurality of shift register stages. Each shift register stage includes a pull-up unit, an energy-store unit, a buffer unit, a discharging unit, a pull-down unit, a control unit and a signal switching unit. The pull-up unit pulls up a gate signal according to a driving control voltage and a first clock. The energy-store unit provides the driving control voltage through performing a charging process based on an input signal received by the buffer unit. The pull-down unit pulls down the gate signal according to a control signal. The control unit generates the control signal based on the input signal and a second clock having a phase opposite to the first clock. The signal switching unit switches the control signal according to the first clock.