ALEXANDRIA, Va., June 17 -- United States Patent no. 12,317,670, issued on May 27, was assigned to Sharp K.K. (Sakai, Japan).
"Display device" was invented by Yusuke Sakakibara (Sakai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A display device including a light-emitting element including a first electrode, a second electrode, a light-emitting layer, a first charge transport layer having a function of transporting first charge, and a second charge transport layer having a function of transporting second charge, in which the display device includes a first inspection element including a fourth electrode and a third electrode. The first inspection element is a single-charge element including the ligh...