ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,744,169, issued on Sept. 22, was assigned to Darfon Electronics Corp. (Taoyuan City, Taiwan).
"Backlight module and lighting keyboard" was invented by Yi-Jui Pan (Taoyuan City, Taiwan) and Hsin-Cheng Ho (Taoyuan City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A backlight module for a lighting keyboard having a specific function key comprises a lighting board, a light guide panel and a shielding sheet. The shielding sheet, the light guide panel and the lighting board are stacked from top to bottom. The lighting board has first and second light emitting units. The light guide panel has first and second light guide holes. The first light emitt...