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. 06, 1994
Filed:
Apr. 19, 1993
Toshihiko Koseki, Yokohama, JP;
Tetsuya Fukunaga, Gifu, JP;
Hideo Takano, Atsugi, JP;
Hidemine Yamanaka, Yamato, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
In a liquid crystal display device including a first transparent insulating substrate having a common electode formed theron; a second transparent insulating substrate having gate lines formed in a first direction; data lines formed in a second direction so as to intersect said gate lines, liquid crystal display cells, each at a crosspoint of said gate and data lines; the cells having a thin film transistor and a display electrode; a light shielding layer having an aperture for exposing a display area of each display electrode; a liquid crystal material retained between said first and second substrates, and a liquid crystal orientating layer on at least one of the substrates, the improvement comprising, the light shielding layer at an edge of said aperture being located in an up stream direction with respect to a rubbing direction of the orientating layer of the substrate, comprising a thin light shielding layer formed at a periphery of the display electrode for defining an edge of the aperture, and a thick light shielding layer having an edge positioned on the thin light shielding layer.