US 12,273,997 B2
Wiring circuit board
Rihito Fukushima, Osaka (JP); Hayato Takakura, Osaka (JP); and Shuichi Wakaki, Osaka (JP)
Assigned to NITTO DENKO CORPORATION, Osaka (JP)
Appl. No. 17/296,805
Filed by NITTO DENKO CORPORATION, Osaka (JP)
PCT Filed Oct. 28, 2019, PCT No. PCT/JP2019/042196
§ 371(c)(1), (2) Date May 25, 2021,
PCT Pub. No. WO2020/110552, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 2018-221132 (JP), filed on Nov. 27, 2018.
Prior Publication US 2022/0007507 A1, Jan. 6, 2022
Int. Cl. H05K 1/11 (2006.01); H05K 3/20 (2006.01)
CPC H05K 1/11 (2013.01) [H05K 3/205 (2013.01); Y10T 29/5313 (2015.01)] 4 Claims
OG exemplary drawing
 
1. A wiring circuit board comprising:
an insulating layer having one surface and the other surface in the thickness direction, a conductive layer disposed on the one surface of the insulating layer, and a metal protective film,
wherein the conductive layer includes:
a signal wiring for transmitting a signal, the signal wiring protruding from the one surface of the insulating layer; and
a terminal continuous with the signal wiring, the terminal protruding from the one surface of the insulating layer;
wherein the signal wiring includes:
one surface spaced apart from the one surface of the insulating layer toward one side in the thickness direction, and
a first surface and a second surface continuous with the one surface of the signal wiring, and disposed on opposite sides to each other in a direction perpendicular to a transmission direction of the signal and the thickness direction, and protruding from the one surface of the insulating layer;
wherein the terminal includes:
one surface spaced apart from the one surface of the insulating layer toward one side in the thickness direction, and
the other surface exposed from the other surface of the insulating layer;
wherein the insulating layer does not cover the first surface and the second surface; and
wherein the metal protective film covers the one surface of the signal wiring and the one surface of the terminal, and does not cover at least one of the first surface and the second surface.