Browse Prior Art Database

High Performance AC Chip Contactor

IP.com Disclosure Number: IPCOM000083901D
Original Publication Date: 1975-Aug-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 74K

Publishing Venue

IBM

Related People

Morton, RM: AUTHOR [+3]

Abstract

Multilayer ceramic (MLC) technology is employed to fabricate the probe holder and space transformer of the integrated circuit chip contactor. The probes are arranged in an array or pattern, which corresponds to contact points or pads on a semiconductor chip to be tested.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

High Performance AC Chip Contactor

Multilayer ceramic (MLC) technology is employed to fabricate the probe holder and space transformer of the integrated circuit chip contactor. The probes are arranged in an array or pattern, which corresponds to contact points or pads on a semiconductor chip to be tested.

Referring to Fig. 1, each plated through-hole contains a small diameter probe of suitable material, such as PALINEY* 7. Each probe must be free to slide up and down within its plated through-hole. Also, each probe must make good electrical contact with the walls of the plated through-hole in which it is seated. To facilitate lubrication and electrical contact, gallium, mercury or any suitable electrically conductive lubricant is wetted between probe and plated walls of the hole.

On top of the ceramic and headed probes is a resilient material of the proper consistency and thickness such that, when bounded from above by a solid retainer surface, will give the proper deflection rate. The diameter of the probe heads will also control the deflection rate. The resilient material is diced to obtain isolated deflection forces.

Referring to Fig. 2, an alternative form of creating deflection forces is to use a buckling beam assembly in place of the resilient material. * Trademark of J. N. Ney Company.

1

Page 2 of 2

2

[This page contains 4 pictures or other non-text objects]