Patent ID: 11956896
Assignee: IBIDEN CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. The printed wiring board according to claim 16, wherein the first conductor circuit has a first lower surface in contact with the surface of the first resin insulating layer and a first upper surface on an opposite side with respect to the first lower surface and is formed such that the second side wall of the second portion extends straight from the first upper surface toward the first lower surface and that a width of the space gradually decreases toward the surface of the first resin insulating layer, and the second conductor circuit has a second lower surface in contact with the surface of the first resin insulating layer and a second upper surface on an opposite side with respect to the second lower surface and is formed such that the third side wall of the fifth portion extends straight from the second upper surface toward the second lower surface such that the width of the space gradually decreases toward the surface of the first resin insulating layer.