Patent ID: 7420380
Filing Date: 2008-09-02
Classification: G01R

Abstract:
1. A method of producing a semiconductor device, comprising the steps of: building a circuit in a wafer and forming a plurality of semiconductor elements; contacting a plurality of contact terminals formed within a first area surrounded by a first metal film of a probe sheet to each of a plurality of electrodes provided at the semiconductor elements to test electrical characteristics of each of the semiconductor elements; and dicing and separating the wafer into the semiconductor elements; wherein the electrical characteristics of each of the semiconductor elements are tested by pushing the first area surrounded by the first metal film while fixing a second metal film formed so as to surround the first metal film of the probe sheet thereby to make the plurality of the contact terminals contact with the electrodes of the semiconductor element to perform the testing, wherein the first metal film has a linear expansion coefficient substantially the same as a linear expansion coefficient of the wafer, and wherein the first metal film is formed by 42 alloy or invar.