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:
Mar. 10, 2020
Filed:
Jul. 31, 2018
Samsung Electronics Co., Ltd., Suwon-si, KR;
Bong Jin Lee, Hwaseong-si, KR;
June Jang, Seoul, KR;
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Abstract
A light emitting diode (LED) module includes a plurality of LED strings and a module controller. The LED strings are connected to each other in parallel, and each of the LED strings emits light that has a different color temperature from that of the other LED strings. The module controller is configured to detect an input voltage applied to the plurality of LED strings, adjust a color temperature of the light emitted by the plurality of LED strings by adjusting a ratio of current respectively supplied to each of the plurality of LED strings based on the input voltage, and reduce a change in a luminous flux of the light emitted by the plurality of LED strings regardless of the color temperature of the light emitted by the plurality of LED strings.