US Patent Issued to TOPPAN HOLDINGS on July 21 for "Light control device" (Japanese Inventor)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,752, issued on July 21, was assigned to TOPPAN HOLDINGS INC. (Tokyo).

"Light control device" was invented by Yuka Kurokawa (Taito-ku, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A first light control device includes a first light control sheet and a driving unit that applies voltage to the first light control sheet. The haze of the first light control sheet is 80% or more when the first voltage is applied, and the haze of the first light control sheet is less than 10% when the second voltage is applied. In the first light control sheet, the difference in lightness index L* between when the second and third voltages are applied is 20 or more...