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:
Mar. 07, 2006
Filed:
Nov. 13, 2001
Kenji Kamada, Osaka, JP;
Koji Ohta, Osaka, JP;
Jun Yamaguchi, Osaka, JP;
Tadashi Koyama, Osaka, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
In the present invention, a surfaceof a glass substrateis irradiated with a laser beamto thereby form a V-shaped grooveAt that time, the laser beamis condensed outside and above the glass substrateThe distance between a beam-condensing pointof the laser beamand the surfaceof the glass substrateis changed to thereby make it possible to change the angle between opposite side surfaces of the V-shaped groove. The angle is in a range of from 30 degrees to 120 degrees. Further, the laser beam used in the present invention is pulsed light, preferably with a pulse width not larger than 10 picoseconds.