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

Claim 11:
12. 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 first reinforcing layer disposed on one surface of the plurality of insulating layers in a stacking direction of the plurality of insulating layers;
a second reinforcing layer disposed on a surface of the first reinforcing layer, opposite to another surface of the first reinforcing layer closer to the plurality of insulating layers than the surface of the first reinforcing layer in the stacking direction;
a first opening having a first width passing through at least a portion of the first and second reinforcing layers, respectively;
a second opening having a second width, different from the first width, and passing through at least a portion of the first reinforcing layer; and
first passivation layers respectively disposed on one surface and the other surface of the plurality of insulating layers,
wherein the first reinforcing layer is disposed on one of the first passivation layers,
wherein the first and second openings are devoid of any circuit layer.