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:
Jan. 09, 1990
Filed:
Mar. 02, 1989
Alain Boudou, Vert, FR;
Marie F Bonnal, Fortenay Le Fleury, FR;
Pull S.A., Paris, FR;
Abstract
An integrated circuit is provided having super imposed metal strip conductor portions separated by dielectric layers, the conductor portions being provided with upper and lower films of a material having a higher melting temperature than that of the conductor material, the integrated circuit having connections linking predetermined superimposed conductor portions through the dielectric layers, the connections being made by joining beads formed in a laser beam programmed opening. A method for establishing a connection of this type is also provided which includes applying a laser beam to make an opening through an insulating layer, the upper conductor, the dielectric layer, and a portion of the lower conductor, and forming a connection in the opening by selectively controlling the power, the diameter, the number and duration of pulses of the laser beam such that beads are formed beginning at the two conductors which unite to form the connection.