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:
Nov. 07, 2023
Filed:
Sep. 20, 2022
Samsung Electronics Co., Ltd., Suwon-si, KR;
Bongjin Lee, Hwaseong-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Abstract
A light emitting diode (LED) control device includes a power supply connected to a first driving node and a second driving node through which an LED driver is configured to supply power to an LED module including a first LED string and a second LED string, a square wave generator that generates a square wave, a duty ratio controller that outputs a control signal based on the square wave, and change a slope of the control signal based on a change in a time constant, and a switch circuit configured to control a ratio of a first current applied to the first LED string and a second current applied to the second LED string based on a change in the slope of the control signal.