ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,560, issued on Dec. 2, was assigned to Mitsubishi Chemical Corp. (Tokyo).
"Light guide plate for image display" was invented by Katsuya Funayama (Tokyo), Tatsushi Baba (Tokyo), Masahiko Ono (Tokyo), Yoshio Wakayama (Tokyo) and Shuichi Kubo (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light guide plate for image display can display clear images even when a resin base is used. The Sight guide plate configured for image display may include a first resin base and a hologram layer. The first resin base may have an MC value of 0.120 or less, obtained by evaluation using shadow contrast, according to expression (1): MC = Lmax - Lmin Lmax + Lmin ,...