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:
Mar. 31, 2009
Filed:
Nov. 08, 2005
Shahriar Mostarshed, San Mateo, CA (US);
Michael L. Anderson, San Jose, CA (US);
Shahriar Mostarshed, San Mateo, CA (US);
Michael L. Anderson, San Jose, CA (US);
QualiTau, Inc., Sunnyvale, CA (US);
Abstract
A semi-automatic multiplexing system for automated semiconductor wafer testing employs a jumper block for each device type in the semiconductor wafer to be tested, each jumper block having inputs for receiving a test input/output line, a plurality of block contacts corresponding to pads of a device to be tested, and manually set connectors or jumper cables for selectively interconnecting jumper block inputs to block contacts. A multiplexer is then used for selectively connecting tester input/output lines to the jumper blocks, thereby reducing the number of relays required for connecting test signals to the devices in the semiconductor wafer.