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. 29, 1990
Filed:
Jan. 04, 1989
Applicant:
Inventor:
Kaoru Imamura, Kawasaki, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912169 ;
Abstract
A trimming process by a laser beam is disclosed. The trimming process comprises two steps. In a first step, a laser shield layer is formed over an untrimmed region of a trimmed material adjacent to a trimmed region. The laser shield layer has a higher heat conductivity than the trimmed material and a large reflectivity for laser beam. In a second step, the trimmed material is cut off. To cut off, a laser beam is applied onto the upper surface of the trimmed region of the trimmed material to vaporize the trimmed material in the trimmed region.