ALEXANDRIA, Va., April 7 -- United States Patent no. 12,596,221, issued on April 7, was assigned to MAGNOLIA WHITE Corp. (Tokyo).

"Display device backlight with laser source and light guide plate having curved surface line sections" was invented by Koji Fujisawa (Tokyo), Ken Kagabu (Tokyo), Koichi Okuda (Tokyo) and Hiroaki Kijima (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A backlight includes a light guide plate, a laser, and a reflector. The laser light incident on the first end face is reflected off the front surface, the rear surface, and the reflector, propagates inside the light guide plate, and exits from the front surface. The front surface has line sections each in a protruding or recessed...