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:
Oct. 05, 1993
Filed:
Jan. 21, 1992
Shih-Long Wei, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
The method involves a thick film paste that is screen printed over the circuit plane of the substrate in the desired circuit pattern. The thick film paste is dried and fired. A metallorganic conductive paste is screen printed on top of the thick film circuit pattern, then it is dried and fired. If the printed circuit covers the whole substrate, the metallorganic paste is screen printed over the whole substrate. Alternatively, if the printed circuit covers portions of the substrate, the metallorganic paste is screen printed only over those portions. If the linewidth of the desired circuits is less than 4 mils, then the circuits are defined by photolithography. Alternatively, if the desired linewidth is greater than 4 mils, the screen printing technology is sufficient to define the circuits.