Lg Innotek Co., Ltd.

Samsung Electronics Co., Ltd.

Sang iL Kim

Se Yun Kim

Se Woong Na

Jung Eun Han

Sung Woo Hwang

Yong Seon Song

Yong Hee Cho

Jong Ho Na

Dong Hun Kang

A circuit board according to an embodiment includes an insulating layer; a circuit pattern disposed on the insulating layer; and a protective layer disposed on the insulating layer and the circuit pattern, and including first and second regions having different heights; wherein the circuit pattern includes: a first-first circuit pattern corresponding to the first region of the protective layer; and a first-second circuit pattern corresponding to the second region of the protective layer, wherein a height of the first region of the protective layer is lower than a height of the first-first circuit pattern, wherein a height of the second region of the protective layer is higher than a height of the first-second circuit pattern, wherein a surface of the first-first circuit pattern includes: a first portion in contact with the first region of the protective layer, and a second portion excluding the first portion, and wherein a surface roughness Ra of the first portion is different from a surface roughness Ra of the second portion.

Circuit board

Growing community of inventors

Seoul, South Korea

Sang iL Kim