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:
Nov. 28, 2006
Filed:
Jan. 08, 2004
Applicants:
Makoto Tatemura, Yokohama, JP;
Masashi Sawa, Yokosuka, JP;
Katsumi Kobara, Mobara, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1333 (2006.01); G02F 1/13 (2006.01);
U.S. Cl.
CPC ...
Abstract
A glass sheet for a liquid crystal display apparatus with a scribe groove formed thereon is divided by cooling the scribe groove and its surroundings and heating surrounding areas on both sides of the scribe groove to extend the scribe groove to a backside of the glass sheet, resulting in uniform distribution of residual stress on a cutting area. Also disclosed is a method for cutting a thin a sheet of brittle material such as a glass or ceramics by extending a scribe groove without deformation or impact so that peeling or cracking is reduced.