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:
Nov. 27, 1990
Filed:
Mar. 10, 1989
Kishore K Chakravorty, Issaquah, WA (US);
Peter L Young, Mercer Island, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
An integrated circuit that may be modified or repaired following its fabrication. The integrated circuit (80/80'/80') includes two chips (82, 84) having terminals (88, 90, 92, 94, 96, and 98), which are interconnected by first conductors (100, 102, 108, 110, 114, and 116) and second conductors (104, 112, and 118). Switchable connectors (126, 128) can be selectively activated to convey current through portions of two bus conductors (120, 122), and/or through a redundant line (124), to interconnect specific terminals of the two chips in order to bypass a break or short circuit in the first and second conductors. In addition, switchable disconnectors (134, 136) may be selectively activated to create discontinuity in specific conductors. A focused laser beam (162) is used to activate selected switchable connectors and disconnectors by heating them, thereby changing the current path interconnecting the terminals of the two chips.