| 摘要 |
PROBLEM TO BE SOLVED: To enhance an adhesive property of each of an insulating sheet, a metal wiring, and an interlayer insulating film to prevent a separation. SOLUTION: After a part or all of the metal wiring is buried in a temporarily cured layer 6 formed at a predetermined depth in a crust of an insulating sheet 1, it is fully cured and the interlayer insulating film is formed thereon. A sectional structure in a widthwise direction of the metal wiring is formed as a trapezoidal shape in which a length of a side coming into contact with the insulating sheet 1 is longer than a length of a side coming into contact with the interlayer insulating film, or a two-step trapezoidal shape formed by jointing short sides of the two trapezoids to each other. COPYRIGHT: (C)2007,JPO&INPIT |
