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:
Sep. 16, 1997
Filed:
Nov. 25, 1996
Hisatoshi Mori, Hachioji, JP;
Hiroyuki Okimoto, Hino, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A thin film transistor panel comprises a substrate, pixel electrodes arranged on the substrate in a matrix form, TFTs each having a source electrode connected to the associated pixel electrode, gate lines and data lines, both connected to the associated TFTs. An auxiliary electrode connected to the associated gate line and a capacitance compensation electrode are provided in such a manner as to cancel a change in gate-source capacitance caused by an alignment error in the manufacturing process. The capacitance compensation electrode is shifted by the same amount as the shift of the source electrode. When the facing area between the gate electrode and source electrode increases (or decreases) due to an alignment error in the manufacturing process, the facing area between the auxiliary electrode and capacitance compensation electrode decreases (or increases). Therefore, the total gate-source capacitance or the sum of the capacitance between the facing portions of the gate electrode and source electrode and the capacitance between the facing portions of the auxiliary electrode and capacitance compensation electrode is constant regardless of a variation in the position of the source electrode.