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. 13, 1987
Filed:
Jan. 21, 1986
Ronald A Norell, Carlsbad, CA (US);
Burroughs Corporation, Detroit, MI (US);
Abstract
An integrated circuit package is fabricated by assembling a stack which is comprised of a plurality of thin flat epoxy-glass layers, adhesive layers between the epoxy-glass layers, and a staircase-shaped cavity. This cavity extends from an outer epoxy-glass layer to an internal epoxy-glass layer, goes parallel along a portion of the flat surface of the internal epoxy-glass layer, and then penetrates through it. Conductors lie on the internal epoxy-glass layer including bonding pads on the flat surface portion. After the stack is assembled, the outer epoxy-glass layer and the cavity are covered with an elastic bladder. Subsequently, the stack is laminated by forcing a fluid into the bladder at a temperature and pressure which causes the bladder's membrane to stretch and push against all the surfaces of the cavity. This dams the adhesive from flowing onto the bonding pads.