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    • 6. 发明专利
    • METHOD FOR MANUFACTURING PRINTED CIRCUIT
    • JPH10224011A
    • 1998-08-21
    • JP30293197
    • 1997-11-05
    • MECANISMOS AUX IND
    • KROEBEL NIETO RODOLFO
    • H05K3/00H05K3/06H05K3/20
    • PROBLEM TO BE SOLVED: To reduce the loss of a conductive surface generated by the manufacture of a circuit, to simplify the manufacture to improve the speed by performing a chemical cutting to the upper base part of a copper sheet and forming a path between lines, filling a dielectric material into the path between lines, and performing a chemical cutting to the lower base part newly. SOLUTION: A path between lines or a groove 13 is formed at an upper base part 11 of a copper sheet 10 by performing chemical, flat cutting. After the path between lines 13 is formed, injection molding is performed by a dielectric substance 14 such as dielectric or heat-insulating plastic on an entire surface, and the path between lines 13 is entirely filled with the dielectric material 14 except the support base part of the dielectric material 14. Then, the copper sheet 10 is rotated, a chemical flat cutting or a cutting is made to a position that is symmetrical to the path between lines or the groove 13 on a lower substrate 12, thus forming a wiring 15. This sort of formation effectively protects the path between lines 13 and at the same time can set the wall of the path between lines or the groove 13 nearly vertically.