US Patent Issued to SEOUL SEMICONDUCTOR on Sept. 16 for "Circuit board having multiple solder resists and displaying apparatus having the same" (South Korean Inventors)

ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,419,149, issued on Sept. 16, was assigned to SEOUL SEMICONDUCTOR Co. LTD. (Ansan-si, South Korea).

"Circuit board having multiple solder resists and displaying apparatus having the same" was invented by Youngsik Ki (Gyeonggi-do, South Korea) and Seung Sik Hong (Gyeonggi-do, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A circuit board includes a base having a plurality of interconnections on an upper surface thereof, a first photosensitive solder resist (PSR) covering the interconnections and defining a pad open region exposing portions of the interconnections, a second PSR covering the first PSR and having an opening exposing the pad open...