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:
Apr. 08, 2025
Filed:
Nov. 03, 2022
Darfon Electronics Corp., Taoyuan, TW;
Chao-Yu Chen, Taoyuan, TW;
DARFON ELECTRONICS CORP., Taoyuan, TW;
Abstract
An optical module for a luminous keyboard includes a mask film having a mask pattern, a patterned layer disposed on the mask film, and a light guide sheet disposed on one side of the mask film. The mask pattern defines a plurality of light-transparent regions respectively corresponding to a plurality of keyswitches of the luminous keyboard. The patterned layer has a light transmittance larger than that of the mask pattern. The light guide sheet has a light-exit edge, and a vertical projection of the light-exit edge of the light guide sheet on the mask film at least partially falls within an outer light-transparent region of the plurality of light-transparent regions. The patterned layer is at least partially located in the outer light-transparent region and adjacent to a region boundary of the outer light-transparent region.