Metallic keypad and method for making the same

• Main Authors: YANG YOON-HONG, LEE JONG-IL, HONG EUN-KI
• Format: Patent
• Language: English
• Published: 15.12.2005
• Edition: 7
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CORRECTION OF TYPOGRAPHICAL ERRORS; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRIC SWITCHES; ELECTRICITY; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; EMERGENCY PROTECTIVE DEVICES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LINING MACHINES; METALLURGY; PERFORMING OPERATIONS; PRINTING; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; RELAYS; SELECTIVE PRINTING MECHANISMS; SELECTORS; STAMPS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TYPEWRITERS

A method for making a metallic keypad includes the steps of forming a key using thermoplastic resin through an injection molding process, forming a conductive layer on a surface of the key, marking a function sign on the conductive layer, and forming a metal layer on the conductive layer except for the function sign.