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:
Apr. 03, 2012
Filed:
Jul. 16, 2008
Yoshio Yamada, Nagano, JP;
Hiroshi Nakayama, Nagano, JP;
Tsuyoshi Inuma, Nagano, JP;
Takashi Akao, Nagano, JP;
Yoshio Yamada, Nagano, JP;
Hiroshi Nakayama, Nagano, JP;
Tsuyoshi Inuma, Nagano, JP;
Takashi Akao, Nagano, JP;
NHK Spring Co., Ltd., Yokohama-shi, JP;
Abstract
A probe card includes a probe head that holds a plurality of probes; a flat wiring board that has a wiring pattern corresponding to a circuit structure; an interposer that is stacked on the wiring board and relays wirings of the wiring board; a space transformer that is placed between the interposer and the probe head, transforms a space between the wirings relayed by the interposer, and leads the transformed wirings out to a surface facing the probe head; and a plurality of post members that are formed in a substantially columnar shape with a height larger than a sum of a thickness of the wiring board and a thickness of the interposer, and embedded to pierce through the wiring board and the interposer in a thickness direction such that one of end surfaces of each post member comes into contact with the space transformer.