ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,557,439, issued on Feb. 17, was assigned to OPULENCE OPTRONICS Co. LTD. (Hsinchu, Taiwan).

"Quantum dots coated with blue-light absorption layer and method of forming the same" was invented by Yuan-Chang Lu (Hsinchu County, Taiwan) and Shang-Wei Chou (Hsinchu County, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a light-emitting quantum dot coated with at least one blue-light absorption layer, including an alloy type core consisting of Cd, Se, Zn, and S, a first shell layer having a zinc blende structure and being coated on the surface of the alloy core, and at least one second shell layer having a wurtzite structure and being coated...