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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.:

US 10487400 B1

PDFFull Text
Date of Patent:
Nov. 26, 2019

Filed:

Dec. 10, 2018

Method of decreasing visible flickering effects in a light emitting diode array operated by pulse width modulated signals

Applicant:

Lear Corporation, Southfield, MI (US);

Inventors:

Michael Reier, Pressig, DE;

Andreas Töpfer, Kronach, DE;

Stefan Klinger, Sindelfingen, DE;

Assignee:

Lear Corporation, Southfield, MI (US);

Attorney:

MacMillan, Sobanski & Todd, LLC

Primary Examiner:

Dedei K Hammond

Int. Cl.
CPC ...
H05B 33/08 (2006.01); H05B 37/02 (2006.01); C23C 16/455 (2006.01); C23C 16/48 (2006.01); H01L 21/311 (2006.01); C23C 16/56 (2006.01); H01L 21/02 (2006.01); C23C 16/50 (2006.01);
U.S. Cl.
CPC ...
C23C 16/45536 (2013.01); C23C 16/45544 (2013.01); C23C 16/482 (2013.01); C23C 16/50 (2013.01); C23C 16/56 (2013.01); H01L 21/0228 (2013.01); H01L 21/31144 (2013.01);
Abstract

A method of changing the brightness of light emitted by first and second light emitting diodes (LEDs) operated by respective first and second pulse width modulation (PWM) control signals includes the steps of (a) changing a first PWM control signal that operates a first LED from a first initial PWM value at a first rate of change to achieve a threshold PWM value at a predetermined point in time; (b) changing a second PWM control signal that operates a second LED from a second initial PWM value at a second rate of change to achieve the threshold PWM value at the predetermined point in time; and (c) subsequent to the predetermined time, changing both the first PWM control signal and the second PWM control signal from the threshold PWM value to achieve a final PWM value.

Find Patent Forward Citations

Reier, Michael. (2019). Method of decreasing visible flickering effects in a light emitting diode array operated by pulse width modulated signals (U.S. Patent No. 10487400). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10487400

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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