ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,604, issued on March 17, was assigned to TOPPAN HOLDINGS INC. (Tokyo).
"Light control sheet" was invented by Yoshitaka Matsubara (Taito-ku, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light control sheet includes a light control layer including an organic polymer layer including voids and a liquid crystal composition filling the voids, transparent electrode layers, and transparent support layers. The liquid crystal composition includes a liquid crystal compound and a dichroic dye, the light control layer is sandwiched between the transparent electrode layers, the light control layer and the transparent electrode layers are sandwiched bet...