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:
Aug. 05, 2025
Filed:
Nov. 04, 2024
Chicony Power Technology Co., Ltd., New Taipei, TW;
Tsung-Hsun Chen, New Taipei, TW;
CHICONY POWER TECHNOLOGY CO., LTD., New Taipei, TW;
Abstract
A backlight module of an illuminated keyboard includes: a circuit board including a first circuit, a second circuit, a gathering portion and a conduction portion, and the first circuit having a first line section; a light guiding plate disposed on the circuit board, including a first light guiding region and a second light guiding region, and the first light guiding region disposed on the first line section; a plurality of light-emitting elements disposed in parallel on the first line section; and an resistor unit including a first resistor and a second resistor, the first resistor disposed on the first circuit, and the second resistor disposed on the second circuit. A sum of a line impedance of the first circuit and an impedance of the first resistor is substantially equal to a sum of a line impedance of the second circuit and an impedance of the second resistor.