Patent ID: 6736665
Filing Date: 2004-05-18
Classification: G01R,H01L,H01R,H05K

Abstract:
A method for producing a contact structure, comprising the following steps of:(a) forming a sacrificial layer on a surface of a silicon substrate; (b) forming a photoresist layer on the sacrificial layer; (c) aligning a photo mask over the photoresist layer and exposing the photoresist layer with ultraviolet light through the photo mask, the photo mask including an image of the contactors; (d) developing patterns of the image of the contactors on a surface of the photoresist layer; (e) forming the contactors made of conductive material in the patterns on the photoresist layer by depositing the conductive material, each of the contactors having an intermediate portion which is substantially straight, a contract portion integral with the intermediate portion and positioned at one end of the contactor, a base portion provided at another end of the contactor, and a spring portion having a straight beam shape and inclined toward the another end and provided between the base portion and the intermediate portion; (f) stripping the photoresist layer off; (g) removing the sacrificial layer by an etching process so that the contactors are separated from the silicon substrate; and (h) mounting the contactors on a contract substrate having through holes to receive ends of the contactors therein so that at least one end of each of the contactors functions as a contact pad for electric connection.