US Patent Issued to KEIWA on Sept. 1 for "Light diffusion sheet, backlight unit, liquid crystal display device, information apparatus, and method for manufacturing light diffusion sheet" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,724,178, issued on Sept. 1, was assigned to KEIWA Inc. (Tokyo).

"Light diffusion sheet, backlight unit, liquid crystal display device, information apparatus, and method for manufacturing light diffusion sheet" was invented by Masayuki Sukigara (Tokyo) and Akira Furuta (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light diffusion sheet 43 includes a polycarbonate resin including a first structural unit derived from a dihydroxy compound represented by the following formula (1). The light diffusion sheet 43 includes, at least in its first surface 43a, recesses 22 formed in a substantially inverted polygon pyramid or in a substantially inverted tr...