ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,394,580, issued on Aug. 19, was assigned to Darfon Electronics Corp. (Taoyuan, Taiwan).
"Luminous keyboard and illuminant board thereof" was invented by Hsin-Cheng Ho (Taoyuan, Taiwan) and Heng-Yi Huang (Taoyuan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An illuminant board includes a substrate, a circuit layer, a light guide plate, a plurality of microstructures and at least one illuminant. The substrate defines at least one key projection. The circuit layer is disposed on the substrate. The circuit layer includes at least one high-potential main conductive wire and at least one low-potential main conductive wire. The light guide plate is d...