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

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,900, issued on Feb. 17, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Polyimide-based polymer film, substrate for display device, and optical device using the same" was invented by Kyunghwan Kim (Daejeon, South Korea) and Chan Hyo Park (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 which is synthesized by the reaction of an acid anhydride compound and a diamine compound having a specific structure, thereby capable of ensuring excellent flatness even under high temperature heat treatment conditions, and stably maintaining flatness even during further heat treat...