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. 03, 1989
Filed:
May. 19, 1987
Applicant:
Inventors:
Andrew C Graham, Sunnyvale, CA (US);
David C MacMillan, Sunnyvale, CA (US);
Assignee:
Gazelle Microcircuits, Inc., Santa Clara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365 96 ; 3652257 ;
Abstract
This invention discloses a laser programmable read only semiconductor-based memory array comprised of memory cells, a group of word lines, a group of bit lines. Each of the memory cells is connected to one of the group of bit lines, and one of the group of word lines and each memory cell is comprised of a memory element and a laser programmable link. In one embodiment, each memory cell is comprised of a transistor and a laser programmable link composed of the same material as either the word or the bit lines. Programming is accomplished by laser coding of the links.