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:
Jul. 27, 1993
Filed:
Apr. 10, 1990
Applicant:
Inventors:
Alain Boudou, Vert, FR;
Marie-Francoise Bonnal, Fontenay le Fleury, FR;
Marine Rouillon-Martin, Bailly, FR;
Assignee:
Bull, S.A., Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437173 ; 437 19 ; 437174 ; 437193 ; 437194 ; 437202 ; 437908 ; 148D / ;
Abstract
The conductor 15 to be connected to the doped region 12 of the substrate 11 has an edge 15a at which the laser beam 20 is aimed, regulated such as to definitively create a zone of low electrical resistance 19 in the dielectric layer 13 that separates the conductor from the doped region. The invention is particularly applicable to programming by laser of read only memories and defective integrated circuits with a view to correcting them.