Invention Application
- Patent Title: MICROELECTRONIC CONTACT STRUCTURE AND METHOD OF MAKING SAME
- Patent Title (中): 微电子接触结构及其制造方法
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Application No.: PCT/US1997008271Application Date: 1997-05-15
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Publication No.: WO1997044676A1Publication Date: 1997-11-27
- Inventor: FORMFACTOR, INC. , KHANDROS, Igor, Y. , ELDRIDGE, Benjamin, N. , MATHIEU, Gaetan, L. , GRUBE, Gary, W.
- Applicant: FORMFACTOR, INC.
- Assignee: FORMFACTOR, INC.
- Current Assignee: FORMFACTOR, INC.
- Priority: US60/005,189 19960517; USPCT/US96/08107 19960524; US60/020,869 19960627; US60/024,405 19960822; US60/024,555 19960826; US60/030,697 19961113; US60/032,666 19961213; US60/034,053 19961231; US8/784,862 19970115; US8/788,740 19970124; US8/802,054 19970218; US8/819,464 19970317; USP-92,304 19970506
- Main IPC: G01R01/067
- IPC: G01R01/067
Abstract:
Spring contact elements are fabricated by depositing at least one layer of metallic material into openings defined on a sacrificial substrate. The openings may be within the surface of the substrate, or in one or more layers deposited on the surface of the sacrificial substrate. Each spring contact element has a base end portion, a contact end portion, and a central body portion. The contact end portion is offset in the z-axis (at a different height) than the central body portion. The base end portion is preferably offset in an opposite direction along the z-axis from the central body portion. In this manner, a plurality of spring contact elements are fabricated in a prescribed spatial relationship with one another on the sacrificial substrate. The spring contact elements are suitably mounted by their base end portions to corresponding terminals on an electronic component, such as a space transformer or a semiconductor device, whereupon the sacrificial substrate is removed so that the contact ends of the spring contact elements extend above the surface of the electronic component. In an exemplary use, the spring contact elements are thereby disposed on a space transformer component of a probe card assembly so that their contact ends effect pressure connections to corresponding terminals on another electronic component, for the purpose of probing the electronic component.
Information query