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 9549442 B1

Date of Patent:

Jan. 17, 2017

Filed:

Mar. 31, 2016

Light emitting device (led) driving apparatus and lighting device including the same

Applicant:

Samsung Electronics Co., Ltd., Suwon-si, KR;

Inventor:

Sang Cheol Bong, Seoul, KR;

Assignee:

SAMSUNG ELECTRONICS CO., LTD., Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, KR;

Attorney:

Muir Patent Law, PLLC

Primary Examiner:

Haissa Philogene

Int. Cl.

CPC ...

H05B 33/08 (2006.01); F21V 23/00 (2015.01); F21K 99/00 (2016.01); H05B 37/02 (2006.01); H01L 25/16 (2006.01); H01L 25/075 (2006.01); H01L 33/62 (2010.01); H01L 33/24 (2010.01); H01L 33/06 (2010.01); H01L 33/50 (2010.01); H01L 33/12 (2010.01); H01L 33/32 (2010.01); H01L 33/00 (2010.01); H01L 33/40 (2010.01); H01L 33/42 (2010.01);

U.S. Cl.

CPC ...

H05B 33/0845 (2013.01); F21K 9/10 (2013.01); F21V 23/005 (2013.01); F21V 23/006 (2013.01); H01L 25/0753 (2013.01); H01L 25/167 (2013.01); H01L 33/62 (2013.01); H05B 33/083 (2013.01); H05B 33/0809 (2013.01); H05B 37/0272 (2013.01); H01L 33/007 (2013.01); H01L 33/06 (2013.01); H01L 33/12 (2013.01); H01L 33/24 (2013.01); H01L 33/325 (2013.01); H01L 33/405 (2013.01); H01L 33/42 (2013.01); H01L 33/502 (2013.01);

Abstract

A light emitting diode (LED) driving apparatus includes a power supply circuit configured to supply driving power to a plurality of LED arrays, a controller integrated circuit (IC) including a plurality of internal switches respectively connected to the plurality of LED arrays and configured to control a path of current flowing in the plurality of LED arrays by adjusting operations of the plurality of internal switches based on a magnitude of the driving power, and a current control circuit connected to an output terminal of a first LED array among the plurality of LED arrays and configured to adjust current flowing in the first LED array. The first LED array is constantly operated while the driving power is being supplied.

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