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:
Dec. 20, 1994
Filed:
Nov. 29, 1991
Hitachi, Ltd., Tokyo, JP;
Abstract
A semiconductor package and an electronic circuit board in which the semiconductor package is mounted on an external circuit board. The semiconductor package has a substrate assembly and a semiconductor mounted on the substrate, where the substrate assembly is composed of a thick film circuit in the form of a ceramic circuit board and a pair of thin film circuits disposed one on each of opposite surfaces of the thick film circuits. Such a substrate assembly has one surface thereof connected to, i.e. electrically contacting, the semiconductor and an opposing surface thereof adapted to be connected to an external circuit. The thin film circuits of the assembly are formed of a heat-resisting resin and a conducting material.