Patent ID: 6873145

Claim:
A process for manufacturing a card with multiple tips for testing semi-conductor chips having connection pads in the form of microspheres, said card comprising a substrate ( 10 ) formed by a flexible insulating film equipped with conducting tracks connected to contacts in the form of tips ( 26 ), wherein: a first adhesive metal layer ( 20 ) of small thickness is deposited on the flexible film made of insulating material, a second metal layer ( 22 ) is deposited by vacuum or electrolysis on the first adhesive layer ( 20 ) to form the material of the future conducting tracks, the metal tips ( 26 ) are achieved by a combination of a first UV photolithography operation making use of a thick photosensitive resin and electroforming by means of a metal-ion electrolyte, selective etching of the second metal layer ( 22 ) and of the first adhesive layer ( 20 ) is performed by means of a second UV photolithography operation to obtain the conducting tracks, and a superficial passivation insulating layer ( 24 ) is deposited on the conducting tracks.