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:
May. 22, 2001
Filed:
Sep. 24, 1998
Applicant:
Inventors:
Yoshihiro Izumi, Kashihara, JP;
Yoshinori Harada, Kashihara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13 ;
U.S. Cl.
CPC ...
G02F 1/13 ;
Abstract
A method for cutting a circuit substrate which includes a substrate with an upper surface and a lower surface and electric circuitry provided on the upper surface of the substrate, includes the steps of: irradiating a laser beam onto the lower surface of the substrate so that a stress is generated inside the substrate using an irradiated spot of the laser beam as a heat source; and cutting the substrate by moving the irradiated spot.