US Patent Issued to Dai Nippon Printing on Feb. 25 for "Light-guide plate, area light source device, display device, manufacturing method for light guide plate" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,235,486, issued on Feb. 25, was assigned to Dai Nippon Printing Co. Ltd. (Tokyo).

"Light-guide plate, area light source device, display device, manufacturing method for light guide plate" was invented by Kohei Komizo (Tokyo), Tetsuya Sadahiro (Tokyo), Hironori Hashiguchi (Tokyo) and Koujiro Ohkawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a light guide plate, an area light source device, a display device, and manufacturing method for the light guide plate such that the occurrence of uneven luminance is suppressed. The light guide plate is characterized in that the light guide plate has a light entrance surface through which ligh...