US 11,867,752 B1
Contact assembly and kelvin testing system having contact assembly
Valts Treibergs, White Bear Township, MN (US); Max A. Carideo, Plymouth, MN (US); David Skodje, Minneapolis, MN (US); and Melissa Hasskamp, Minneapolis, MN (US)
Assigned to Johnstech International Corporation, Minneapolis, MN (US)
Filed by Johnstech International Corporation, Minneapolis, MN (US)
Filed on Apr. 29, 2022, as Appl. No. 17/732,815.
Claims priority of provisional application 63/188,226, filed on May 13, 2021.
Int. Cl. G01R 31/28 (2006.01)
CPC G01R 31/2886 (2013.01) 16 Claims
OG exemplary drawing
 
1. A contact assembly for a Kelvin testing system for testing integrated circuit devices, comprising:
at least one grouping of blades including a first force blade, a second force blade, a first sense blade, and a second sense blade; the first force blade, the second force blade, the first sense blade, and the second sense blade being disposed in a side by side generally parallel relationship; the first force blade, the second force blade, the first sense blade, and the second sense blade being configured to be longitudinally slidable with respect to each other; the first force blade and the second force blade being staggered in a longitudinal direction; the first sense blade and the second sense blade being staggered in the longitudinal direction;
an electrical insulation layer disposed between the first force blade and the first sense blade and between the second force blade and the second sense blade; and
an elongated elastomer, the elastomer being configured to be retained by the first force blade, the second force blade, the first sense blade, and the second sense blade;
wherein each of the first force blade, the second force blade, the first sense blade, and the second sense blade includes a recess having an opening and sized to receive and retain at least a portion of the elastomer;
wherein the first force blade, the second force blade, the first sense blade, and the second sense blade are electrically conductive; the insulation layer and the elastomer are non-conductive, and
wherein the openings of the first force blade and the first sense blade face a direction opposite to the openings of the second force blade and the second sense blade, such that the elastomer is enclosed and surrounded by a body of each of the first force blade, the second force blade, the first sense blade, and the second sense blade in a plan view.