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:
Jun. 29, 1993
Filed:
Oct. 21, 1992
Yasuhiro Ukai, Kobe, JP;
Tomihisa Sunata, Miki, JP;
Kazuya Hashimoto, Kobe, JP;
Minori Otsuki, Kobe, JP;
Hosiden Corporation, Osaka, JP;
Abstract
On the inside surface of one of a pair of opposed transparent substrates forming an active liquid crystal substrate there are formed first and second insulating layers. Between the insulating layers there are provided transparent pixel electrodes arranged in a matrix form and source lines corresponding to respective columns of the pixel electrodes. A short-circuit metal layer is formed on the substrate, the opposite ends of the metal layer underlying a marginal portion of each pixel electrode and the source line adjacent thereto, respectively, but separated therefrom by the first insulating layer. In these overlapping regions welding metal pads are formed on the pixel electrode and the source line. Other welding metal pads of a ductile metal are formed on the second insulating layer right above the first-mentioned welding metal pads, respectively. In the case of a white-defect pixel, laser beams are applied to the two overlapping regions to destroy the first and second insulating layers and fuse metals of three layers together, by which the pixel electrode of the defective pixel is short-circuited to the corresponding source line.