Patent ID: 6420886
Filing Date: 2002-07-16
Classification: G01R

Abstract:
A membrane probe apparatus for providing electrical connection between a tested wafer and a testing apparatus, wherein said membrane probe apparatus comprising:a printed circuit board for providing electrical connection to said testing apparatus; a membrane assembly for providing electrical connection between said tested wafer and said printed circuit board, wherein said membrane assembly comprises a membrane probe region, a plurality of membrane connection regions, and a plurality of membrane regions that electrically connect said membrane probe region to said plurality of membrane connection regions; a pressure mechanism for supporting and fixing said membrane assembly and said printed circuit board as testing process performing, wherein said pressure mechanism comprises an upper-housing, a spring system, and a support block comprising a support base having a groove for positioning said spring system therein and whose bottom couples said membrane probe region by a plurality of screws, a support flange, and a support ring connecting said support flange to said support base, and when said pressure mechanism is positioned at non-operated status, a gap is formed between said support base and said upper-housing by said spring system to provide a traveling distance to said support base; and oriented means for orienting said pressure mechanism and said membrane assembly to said printed circuit board.