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. 29, 2003
Filed:
Mar. 08, 2000
David Harry Eppes, Austin, TX (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
Defect analysis of an integrated circuit die having an internal heat source is enhanced using a method and system that use the internal heat source to heat the die. According to an example embodiment of the present invention, a semiconductor die having a liquid crystal layer is analyzed by detecting a liquid crystal phase change caused by electrical operation of the die. A first circuit region is electrically operated and used as the primary heat source to generate sufficient heat at a second circuit region to effect a separately viewable phase change in an area of the liquid crystal layer corresponding to the second circuit region. The internal heat source is adapted to cause the liquid crystal phase change without necessarily heating the die with an external heat source. A detector is adapted and used to detect the liquid crystal phase change in the area corresponding to the second circuit region.