ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,224,381, issued on Feb. 11, was assigned to Sharp K.K. (Sakai, Japan).
"Element and electronic device having a mixed layer of quantum dots and nanoparticles" was invented by Kenji Kimoto (Sakai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In an element provided with a QD layer including QD phosphor particles, a first hole transport layer located between a first electrode and the QD layer is formed of a continuous film of a first carrier transport material. A second hole transport layer located between the first hole transport layer and the QD layer includes nanoparticles formed of a second carrier transport material."
The patent was filed on S...