Patent ID: 9116202
Filing Date: 2015-08-25
Classification: B23Q,G01R,H01L,H02S,Y02E,Y10T

Abstract:
1. A chuck to support a substrate for electrical or thermal testing, the chuck comprising: a base portion; a support portion disposed above, and coupled to, the base portion, the support portion to support a substrate above the base portion and to define a cavity between a bottom surface of the substrate and the base portion that thermally separates a portion of the bottom surface of the substrate from the base portion; and a bore through the base portion and the support portion, the bore to allow a testing probe to make contact with the bottom surface of the substrate through the bore; wherein the chuck is heated during the electrical or thermal testing, and wherein the cavity reduces an amount of heat transferred from the base portion of the chuck to the substrate; wherein the amount of heat transferred is reduced to between about 0.020 W/(m*K) and 0.030 W/(m*K).