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:
May. 28, 2002
Filed:
Dec. 27, 1999
Takahiro Kimura, Tokyo, JP;
Michinobu Tanioka, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A test carrier according to the present invention can materialize stable contact between electrode bumps of a semiconductor device and a contact sheet no matter where the electrode bumps are. The test carrier comprises a contact sheet disposed on a carrier base and having bumps in contact with and connected to electrode pads on the surface of the semiconductor device and external electrodes for testing, a pressing member for applying predetermined contact pressure between the electrode pads and the bumps , and a securing member for securing the contact sheet on the carrier base. The center of thermal expansion of the contact sheet secured by the securing member is offset from all the bumps . Further, the securing member secures the carrier base and the contact sheet at two or more securing points, and the center of a figure formed by linking the securing points is offset from the bumps