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. 08, 2002
Filed:
Apr. 13, 2000
Yukihisa Orisaka, Yamatotakada, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An active-matrix-type liquid crystal display device is made up of a liquid crystal panel, a gate driver including a switching circuit, a source driver, a control circuit, a power circuit, a counter electrode driving circuit, etc. Upon application of a voltage VDD, the switching circuit outputs to an output circuit a voltage VDD for ON of TFT elements, and a voltage VSS for OFF of the TFT elements. Upon application of a voltage VSS, however, the switching circuit outputs to the output circuit a voltage VDD for ON of the TFT elements, and a voltage of a rectangular wave signal ACK for OFF of the TFT elements. Consequently, the liquid crystal display device, using a single gate driver, can perform driving of gate signal lines in accordance with the structure of the liquid crystal panel (Cs-on-common or Cs-on-gate).