ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,156, issued on Dec. 16, was assigned to LG INNOTEK Co. LTD. (Seoul, South Korea).
"Circuit board" was invented by Se Woong Na (Seoul, South Korea), Sang Il Kim (Seoul, South Korea) and Jung Eun Han (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "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 l...