ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,635, issued on Oct. 28, was assigned to DARFON ELECTRONICS CORP. (Taoyuan, Taiwan).
"Illuminated sensing key" was invented by Heng-Yi Huang (Taoyuan, Taiwan) and Chun-Tan Wu (Taoyuan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An illuminated touch key uses a chamfer structure of a light guide panel disposed on a sensing module or a light guide panel adjacent to a sensing module to guide light emitted by a light source to a hollow area of a keycap to emit light, thereby forming an illuminated pattern corresponding to the hollow area. Accordingly, a user can accurately find the location of the illuminated touch key according to the illumina...