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:
Jul. 04, 1989
Filed:
Jul. 16, 1987
Ralph W Doe, Auburn, MA (US);
Stephen P Hansen, Amherst, NH (US);
Kenneth M Brown, North Andover, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A package for housing fabricated semiconductor chips is disclosed. The package has ceramic base with a raised outer shelf extending around its periphery. The outer shelf defines a space in the package where the chip is seated. A lead frame with a number of individual conductive leads is disposed over the outer shelf. A section of tape automated bonding tape is used to provide electrical connections between bonding points on the chip and the lead frame leads; the tape automated bonding tape carries a number of conductive leads each of said leads having an inner lead portion attached to a chip bonding point, and an outer lead portion attached to a lead frame lead. A frame is secured over the base outer shelf so the lead frame is embedded therebetween. A lid is secured over the frame to completely enclose the chip within the package. An adhesive that can be cured at a low temperature so as to not delaminate the tape automated bonding tape, is used to secure the frame and lead frame to the base, secure the chip in the space and secure the lid to the frame.