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.

Date of Patent:
Apr. 07, 1992

Filed:

Jan. 19, 1990
Applicant:
Inventors:

Mikio Katayama, Ikoma, JP;

Hiroaki Kato, Nara, JP;

Takayoshi Nagayasu, Nara, JP;

Akihiko Imaya, Nara, JP;

Hidenori Negoto, Ikoma, JP;

Yuzuru Kanemori, Tenri, JP;

Kiyoshi Nakazawa, Fujiidera, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
445-4 ; 445 24 ; 437-8 ; 437923 ;
Abstract

A method for manufacturing an active matrix display apparatus comprising: forming picture element electrodes disposed in a matrix at the inner surface of either one of a pair of substrates, switching elements electrically connected to the picture element electrodes respectively, spare switching elements disposed close to the picture element electrodes in a non-conductive state respectively, and connections, each including an extension end of each of the spare switching elements and a metal piece electrically connected to one end of each of the picture element electrodes, the extension end and metal piece being disposed opposite to each other in a non-conductive state; applying a drive signal to a display medium via the picture element electrodes and opposite electrodes thereby detecting a defect in the switching element; and irradiating energy onto the connection between the picture element electrode connected to the switching element, the defect of which has been detected, and the spare switching element, thereby electrically connecting the picture element electrode with the spare switching element, whereby the apparatus can be provided with a high yield.


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