Abstract: A printed circuit board (PCB) and a method for manufacturing the PCB are disclosed. A PCB includes a transparent insulating substrate, a conductive circuit layer 16, and a transparent cover layer. The conductive circuit layer is located between the transparent insulating substrate and the transparent cover layer. The conductive circuit layer includes a first Ni—W alloy pattern layer, a copper pattern layer, and a second Ni—W alloy pattern layer. The first Ni—W alloy pattern layer is adhered with the transparent adhesive layer. Bottom surfaces of the conductive pattern layer are coated by the first Ni—W alloy pattern layer. Top surfaces and side surfaces of conductive pattern layer are coated by the second Ni—W alloy pattern layer.

Abstract: A PCB includes a base layer, a wiring pattern formed on a surface of the base layer, and a protecting layer formed on the wiring pattern. The protecting layer is formed by printing and solidifying an ink on the wiring pattern. The ink includes a cycloaliphatic epoxy resin, a phenoxyl resin solution, a solvent, a hardener, and an antifoaming agent.

Abstract: An FPCB includes a flexible base, a wiring layer formed on a top surface of the base, a covering layer formed on the wiring layer, and a shielding layer formed on a portion of the covering layer. The wiring layer includes a grounding line. The covering layer defines an opening to expose the grounding line to the outside. A portion of the shielding layer fills into the opening. The shielding layer is electrically connected to the grounding line through the opening.

Abstract: A printed circuit board (PCB) with visible circuit includes a circuited substrate, a first and second release films, and a first and second optical clear adhesive (OCA) layers. The first and second release films are pressed onto and are adhered to two opposite surfaces of the circuited substrate via the first and second OCA layers respectively, and the first and second OCA layers are made of polymethyl methacrylate (PMMA).

Abstract: A printed circuit board with circuit visible includes a wiring layer, a first adhesive layer, a first dielectric layer, and a cover film, which are stacked in described order, the wiring layer comprising at least one electrical contact pad. The cover film has at least one opening corresponding to the electrical contact pad. The cover film includes a second dielectric layer and a second adhesive layer. A flow initiation temperature of the first adhesive layer is in a range from 85 degrees centigrade to 90 degrees centigrade, and a hardening temperature of the first adhesive being lower than 150 degrees centigrade.

Abstract: This disclosure relates to a printed circuit board comprising a light-pervious insulation layer, a patterned electrically conductive layer and a light-pervious overlay. The patterned electrically conductive layer includes a first black oxide layer, a copper layer and a second black oxide layer. The copper layer includes two opposite surfaces and a plurality of inner surfaces interconnecting the two opposite surfaces of the copper layer. The first black oxide layer is formed on one of the surfaces, and the second black oxide layer is formed on the other surface and the inner surfaces. The patterned electrically conductive layer is arranged on the light-pervious insulation layer. The light-pervious overlay is arranged on the second black oxide layer. A method for manufacturing the printed circuit board is also provided in this disclosure.