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. 15, 1999
Filed:
Mar. 21, 1996
Applicant:
Inventors:
Toshimichi Ouchi, Yokohama, JP;
Masanori Takahashi, Chigasaki, JP;
Hideo Mori, Yokohama, JP;
Kenji Niibori, Chigasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 98 ; 349149 ; 361748 ;
Abstract
A printed circuit board comprises a plurality of board layers and a plurality of wiring layers both of which are laminated. When a wiring pattern is disposed at one side against the center line, a dummy wiring pattern is formed at the place substantially symmetrical to the position where the wiring pattern is disposed to suppress a warp of the printed circuit board caused by temperature changes and to ease connection work between the printed circuit board and units, such as TABs for driving liquid crystal.