Patent ID: 6486688
Filing Date: 2002-11-26
Classification: G01R

Abstract:
A semiconductor device testing apparatus for testing an electrical characteristic of a semiconductor device, said semiconductor device having a first electrode, a second electrode and a signal electrode formed, respectively, on its front surface side,said apparatus comprising: a device stage holding said semiconductor device to be tested; a measuring head portion including a contact sheet, an elastic sheet and a base plate; a power source portion for applying a supply voltage; and a probe portion including a probe setting section and a probe; said contact sheet of said measuring head portion having an insulating sheet, first and second supply voltage applying electrodes formed on said insulating sheet and electrically contacting with said first and second electrodes of said semiconductor device, respectively, at the testing state, first and second external terminals for applying said supply voltage from said power source portion, located on a peripheral portion of said insulating sheet and positioned with a larger interval each other than that of said first and second supply voltage applying electrodes, a first wiring connecting said first supply voltage applying electrode and said first external terminal, and a second wiring connecting said second supply voltage applying electrode and said second external terminal; said elastic sheet of said measuring head portion having a smaller size than said contact sheet, covering said first and second supply voltage applying electrodes and located on the opposite side from the side where said first and second supply voltage applying electrodes of said contact sheet are located; a base plate of said measuring head portion having a concavity with a shape that matches the outer dimension and thickness of said elastic sheet and said contact sheet, and installed said elastic sheet and said contact sheet in said concavity such that said first and second supply voltage applying electrodes of said contact sheet are exposed; wherein said contact sheet has a first opening formed at a portion where said first and second wirings are absent and on said signal electrode of said semiconductor device; said elastic sheet has a second opening connected with said first opening; said base plate has a third opening connected with said second opening; and said probe of said probe portion is contacted to said signal electrode of said semiconductor device through said third, second and first openings.