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.

Date of Patent:
Mar. 31, 2026

Filed:

Feb. 26, 2024
Applicant:

Primax Electronics Ltd., Taipei, TW;

Inventors:

Yu-Zeng Yang, Taipei, TW;

Sheng-Wen Wang, Taipei, TW;

Hui-Ling Lin, Taipei, TW;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05B 45/20 (2020.01); H05B 45/24 (2020.01); H05B 45/52 (2020.01); H05B 45/54 (2020.01);
U.S. Cl.
CPC ...
H05B 45/24 (2020.01); H05B 45/52 (2020.01); H05B 45/54 (2020.01);
Abstract

An illumination circuit includes a first voltage source, plural first light-emitting diodes, plural first resistive elements, a first impedance element, a second voltage source, plural second light-emitting diodes, plural second resistive elements and a second impedance element. The plural first light-emitting diodes are connected with each other in parallel. A first terminal of each first resistive element is connected with a first output terminal of the corresponding first light-emitting diode. A second terminal of each first resistive element is connected with a first negative electrode of the first voltage source. A first terminal of the first impedance element is connected with a first positive electrode of the first voltage source. A second terminal of the first impedance element is connected with a first input terminal of each first light-emitting diodes. The plural second light-emitting diodes are connected with each other in parallel.


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Yang, Yu-Zeng. (2026). Illumination circuit (U.S. Patent No. 12593381). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12593381

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