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. 20, 2001
Filed:
Oct. 21, 1998
Hiroaki Takasu, Chiba, JP;
Noritoshi Ando, Chiba, JP;
Yoshikazu Kojima, Chiba, JP;
Kazunari Sugiura, Chiba, JP;
Michiaki Yazawaw, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
In a semiconductor integrated circuit device having laser-trimmable fuses and a trimming position pattern, in order to increase trimming accuracy and reduce the size of the positioning pattern, the fuses and the positioning pattern are formed using the same thin film. The trimming positioning pattern has an abrupt boundary between a high light reflectivity region and a low reflectivity region so that light reflectivity varies abruptly. To further reduce size, the trimming positioning pattern can be formed in pad areas of a integrated circuit chip or placed at intersections between scribe lines in a wafer.