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. 23, 2024
Filed:
Apr. 07, 2023
Applicant:
Darfon Electronics Corp., Taoyuan, TW;
Inventors:
Assignee:
DARFON ELECTRONICS CORP., Taoyuan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 13/83 (2006.01); F21V 8/00 (2006.01); H01H 13/705 (2006.01); H01H 13/02 (2006.01); H01H 3/12 (2006.01);
U.S. Cl.
CPC ...
H01H 13/83 (2013.01); G02B 6/0055 (2013.01); H01H 13/023 (2013.01); H01H 13/705 (2013.01); H01H 3/125 (2013.01);
Abstract
A backlight module is configured to illuminate at least one key cap. The backlight module includes a light emitting unit, a light guide plate and a lighting board. The light guide plate has a light guide hole for accommodating the light emitting unit. The lighting board has a pair of pads connected to the light emitting unit respectively. The lighting board includes a first reflective layer surrounding the light emitting unit and at least partially covering the pair of pads. Each of the pair of pads has a plurality of branches and at least one hollow area. The at least one hollow area overlaps with at least one part of the light emitting unit.