ALEXANDRIA, Va., July 14 -- United States Patent no. 12,681,304, issued on July 14, was assigned to VisEra Technologies Co. Ltd. (Hsin-Chu City, Taiwan).
"Waveguide structure and display device using the same" was invented by Po-Han Fu (Hsin-Chu City, Taiwan), Hsin-Yi Hsieh (Hsin-Chu City, Taiwan) and Wei-Ko Wang (Hsin-Chu City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A waveguide structure is provided. The waveguide structure includes waveguide combiners stacked one upon the other. Each waveguide combiner includes a waveguide plate and an input coupler disposed on the waveguide plate. The input coupler of at least one waveguide combiner includes first grating pillars, and each first grating pil...