ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,650, issued on Nov. 25, was assigned to E Ink Holdings Inc. (Hsinchu, Taiwan).
"Front light module and manufacturing method thereof" was invented by Chao-Chun Cheng (Hsinchu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A front light module includes a light guide plate, a light source, first waterproof layers, a second waterproof layer, and a third waterproof layer. An edge of the light guide plate has an extending portion. The light source is located on the edge of the light guide plate. There are two first waterproof layers respectively located on a bottom surface and a top surface of the light guide plate. The second waterproof layer has...