US Patent Issued to LG CHEM on June 2 for "Apparatus and method for evaluating light stability of material for organic layer of organic light-emitting element" (South Korean Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,648,346, issued on June 2, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Apparatus and method for evaluating light stability of material for organic layer of organic light-emitting element" was invented by Hak Kyun Yang (Daejeon, South Korea), Jeonghyun Kim (Daejeon, South Korea), Heejoo Lee (Daejeon, South Korea) and Wonjong Yoo (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for evaluating photostability of a material for an organic material layer of an organic light emitting device, the apparatus comprising a photostability chamber provided with at least four light source zones, comprising a first light source z...