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. 09, 1993
Filed:
Jan. 14, 1992
Applicant:
Inventors:
Tom J Hirsch, Austin, TX (US);
Charles W Lin, San Antonio, TX (US);
Chung J Lee, Austin, TX (US);
Heinrich G Muller, Austin, TX (US);
Assignee:
Microelectronics and Computer Technology Corporation, Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ; H01L / ;
U.S. Cl.
CPC ...
427556 ; 426 96 ; 426 98 ; 156628 ; 156646 ; 156656 ;
Abstract
A dielectric substrate is coated with a protective layer and a catalyst film is formed in a laser irradiated predetermined pattern on the protective layer so that during electroless deposition a metal is plated on the catalyst film in the predetermined pattern whether or not the dielectric has unwanted catalytic sites. The protective layer is not removed by the electroless plating bath or prior etch steps but can subsequently be stripped by a separate etch without removing the plated metal or the dielectric from the substrate.