ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,210,179, issued on Jan. 28, was assigned to DARFON ELECTRONICS CORP. (Taoyuan, Taiwan).

"Backlight keyswitch and backlight module thereof" was invented by Chao-Yu Chen (Taoyuan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A backlight keyswitch includes a backlight module and a keyswitch body having a cap with a symbol. The backlight module disposed under the cap includes a light guide plate, a light-blocking sheet, a backlight circuit board having first, third, and second lighting units disposed in the light guide plate and arranged sequentially along a longitudinal direction for emitting first, third, and second color lights respectively, and...