Patent ID: 11882652
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A printed circuit board, comprising:
a plurality of insulating layers;
a plurality of circuit layers disposed on at least one of an interior and an exterior of the plurality of insulating layers;
a reinforcing layer disposed on one surface of the plurality of insulating layers, and having a first opening having a first width and a second opening having a second width, different from the first width; and
first passivation layers respectively disposed on one surface and the other surface of the plurality of insulating layers,
wherein the reinforcing layer is disposed on one of the first passivation layers,
wherein the first and second openings are devoid of any circuit layer, and
wherein an inner wall of the reinforcing layer, provided by the first and second openings, has a step portion.