Patent ID: 11871510
Assignee: HONG FU JIN PRECISION INDUSTRY (WUHAN) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method of forming a circuit board, comprising:
receiving a substrate, the substrate having a first surface and an opposite second surface;
forming a pair of complementary conductive traces and a dielectric region on the first surface, each comprising a linear portion and a terminal portion having an annular profile; and
removing a portion of the terminal portions to form a pair of circular arc profiles with a pair of complementary notches facing toward each other;
wherein the terminal portions of the pair of complementary conductive traces are arranged in the dielectric region, and the pair of complementary conductive traces and the dielectric region are exposed from a solder mask layer disposed over the substrate.