Patent ID: 9110130
Filing Date: 2015-08-18
Classification: G01R,G11B,H05K,Y10T

Abstract:
1. A probe head of a vertical probe card, comprising: a guide plate; a composite board, the composite board disposed under the guide plate, the composite board comprising a first board layer and a second board layer, the first board layer and the second board layer being laminated together, and at least one through hole passed through the first board layer and the second board layer, wherein the friction coefficient of the first board layer is smaller than the friction coefficient of the second board layer, and the thermal expansion coefficient of the second board layer is smaller than the thermal expansion coefficient of the first board layer; and at least one probe pin, one end of the probe pin supported by the guide plate and another end of the probe pin penetrated all the way through the through hole of the composite board, and the outer diameter of the probe pin smaller than the diameter of the through hole of the composite board; wherein the first board layer is made of a plastic material and the second board layer is made of a ceramic material.