Patent ID: 11937378
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C  G | IPC C  G  H

Claim 0:
1. A method of manufacturing a printed circuit board, the method comprising:
preparing an insulating substrate on which a first metal layer is formed;
stacking a resist laminate having a plurality of layers on the first metal layer;
forming an opening exposing a portion of the first metal layer by patterning the stacked resist laminate having the plurality of layers;
forming a second metal layer directly on the exposed portion of the first metal layer;
removing the patterned resist laminate having the plurality of layers; and
etching at least another portion of the first metal layer,
wherein the resist laminate having the plurality of layers comprises a first resist layer of non-photosensitivity disposed directly on the first metal layer and a second resist layer of photosensitivity disposed on the first resist layer, and
wherein the forming of the opening comprises:
forming a second opening by exposing and developing, with a first development process, the second resist layer before the second metal layer is formed directly on the exposed portion of the first metal layer; and
forming a first opening by developing, with a second development process after the first development process, the first resist layer, and
wherein the forming of the second metal layer comprises filling the first and second openings with the second metal layer in a single step such that the second metal layer extends continuously from the first opening to the second opening.