ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,441, issued on June 24, was assigned to CM VISUAL TECHNOLOGY Corp. (Tainan, Taiwan).
"Optical film" was invented by Tsang-Chi Wang (Tainan, Taiwan) and Hsin-Wen Chang (Tainan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The optical film includes a main body and an optical structure. The optical structure protrudes from a surface of the main body. The optical structure includes a first side surface and a second side surface. A first connecting line and a first angle less than 90 degrees are formed between the first side surface and the surface of the main body. A second connecting line and a second angle less than 90 degrees are formed betw...