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

Claim 7:
8. The printed wiring board according to claim 2, 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 first side wall, the second side wall of the first portion, and the second side wall of the third portion are curved from the first upper surface toward the first lower surface and recessed, 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 fourth portion, the third side wall of the sixth portion, and the fourth side wall are curved from the second upper surface toward the second lower surface and recessed.