公开(公告)号：JPH04341772A

公开(公告)日：1992-11-27

申请号：JP28728191

申请日：1991-10-08

Applicant: IBM

Inventor： MADABU DATSUTA ,  DEEBUIDO AANESUTO KINGU ,  ARAN DAGURASU NAITO ,  KARUROSU JIYUAN SANBUCHIETSUTE

IPC: H01H1/06 ,  H01L21/60 ,  H01R12/04 ,  H01R12/55 ,  H01R13/03 ,  H01R13/22 ,  H01R43/16 ,  H05K1/11 ,  H05K3/06 ,  H05K3/07 ,  H05K3/24 ,  H05K3/38 ,  H05K3/40

Abstract: PURPOSE: To obtain a conical connector with high economical efficiency which makes a contact between high-frequency, redundancy, fine tip and high performance pad and a pad by forming a conical metal projection in a neutral salt solution by electrochemical working. CONSTITUTION: When photoresist is applied to a metal film or the like and developed after exposure through a high polymer mask, points which become plural conical contacs are formed. When in such a state, the metal film is taken as anode, and an electric current is let flow in a neutral solution in a space up to the cathode, many conical contacts are continuously formed on the metal film by anode dissolution corresponding to an unexposed part to become a connector coming into contact with the similar conical contacts or the metal material flat surface. This creation method forms a conical connector with high economical efficiency which becomes a contact between pads with high-frequency, redundancy, fine tip and high performance.