US Patent Issued to LG CHEM on March 17 for "Polyimide-based resin film, substrate for display device, and optical device using the same" (South Korean Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,357, issued on March 17, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Polyimide-based resin film, substrate for display device, and optical device using the same" was invented by Ye Ji Hong (Daejeon, South Korea) and Mi Eun Kang (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a polyimide-based resin film wherein a thermal hysteresis gap at a temperature of 50deg C. or more and 150deg C. or less is 100 micro metre or more and 500 micro metre or less, and a substrate for display device, and an optical device using the same."

The patent was filed on Aug. 22, 2022, under Application No. 18/...