ALEXANDRIA, Va., March 19 -- United States Patent no. 12,256,589, issued on March 18, was assigned to Sharp K.K. (Sakai, Japan).
"Light-emitting element and method for manufacturing same" was invented by Yoshihiro Ueta (Sakai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting element includes, in order of listing, an anode, an hole transport layer, an emission layer, and a cathode. The light-emitting element includes an reducing material disposed in at least a part between the anode and the hole transport layer, being in contact with the anode and the hole transport layer, and containing a reducing material that reduces a layer having the hole transport layer. The reducing material contai...