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. 31, 1989
Filed:
Mar. 20, 1988
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A flat panel display device, such as a liquid crystal panel display device, of large size and a method and apparatus of manufacture of the same. The display device may be provided by discrete or divided display sections. For the manufacture of the panel display device, a pattern for forming picture elements and a drive circuit therefor is photolithographically transferred onto the whole surface of a substrate or base plate in a step-and-repeat manner. In one aspect of the invention, different masks having patterns corresponding to portions of the first-mentioned pattern are used. After the pattern of one of the masks is transferred onto one portion of the substrate, the one mask is replaced by another which the substrate is moved stepwise so that the pattern of the other mask can be transferred onto another portion of the substrate. By repeating the pattern transfer, with different masks, and repeating the stepwise movement of the substrate, the whole of the first-mentioned pattern is transferred onto the whole surface of the substrate with a high resolving power.