ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,767,884, issued on Oct. 20, was assigned to TCL TECHNOLOGY GROUP Corp. (Huizhou, China).
"Photoelectric devices" was invented by Tianfeng Wang (Huizhou, China) and Yixing Yang (Huizhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A photoelectric device, which includes an anode, a hole transport layer, a quantum dot light-emitting layer and a cathode arranged in sequence, the hole transport layer contains at least two hole transport materials, and the at least two hole transport materials includes a hole transport layer with an absolute value of a maximum energy level of valence band of the transport material being smaller than or equal to 5.3 e...