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:
Jan. 20, 2026
Filed:
Sep. 06, 2023
Logitech Europe S.a., Lausanne, CH;
Logitech Europe S.A., Lausanne, CH;
Abstract
In some embodiments, a keyboard key structure includes: a substrate; a key switch, which includes a top housing, a bottom housing. and a key stem. The top housing covers the key stem and is coupled to the bottom housing to form a cavity. The bottom housing is coupled to the substrate. The keyboard key structure further include a keycap including a light transmissive region, the keycap being configured to be coupled to the top housing of the key switch; and a light guide coupled to one side of the cavity of the key switch, the light guide comprising: a flat bottom surface; and a flat top surface wider than and parallel to the bottom surface. The top surface includes uncontinuous, trapezoidal-shaped Fresnel structures at end portions at both ends thereof. A light emitting element is coupled to the substrate and disposed under the bottom surface.