The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2026
Filed:
Nov. 22, 2024
Darfon Electronics Corp., Taoyuan City, TW;
Jui-Yi Huang, Taoyuan City, TW;
DARFON ELECTRONICS CORP., Taoyuan City, TW;
Abstract
An illuminated keyswitch includes a base plate, a keycap, a light source disposed on the base plate, and a light-guiding device. The keycap is connected above the base plate with upward and downward movement. The light-guiding device includes an actuating portion and a light-entry portion connecting the actuating portion. The light-entry portion has a first reflective surface, and is positioned above the base plate such that the first reflective surface is located above the light source. The actuating portion has a second reflective surface far away from the first reflective surface, and is positioned between a bottom surface of the keycap and a switch contact. A light emitted by the light source is directed upward into the light-guiding device, reflected by the first reflective surface and guided by the light-guiding device out of a front face of the actuating portion to uniformly illuminate a translucent region of the keycap.