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:
Dec. 04, 2018
Filed:
May. 04, 2015
Lg Innotek Co., Ltd., Seoul, KR;
Ki Soo Kwon, Seoul, KR;
Do Yub Kim, Seoul, KR;
Min Hak Kim, Seoul, KR;
Jae Hun Yoon, Seoul, KR;
Seung Beom Jeong, Seoul, KR;
LG INNOTEK CO., LTD., Seoul, KR;
Abstract
A light emitting module of an embodiment comprises: (1-1)to (1-M)(where M is a positive integer equal to or greater than 2) light emitting elements connected with each other; (2-1)to (2-N)(where N is a positive integer equal to or greater than 1) light emitting elements connected in parallel with a (1-m)(1≤m≤M) light emitting elements which is one of the (1-1)to (1-M)light emitting elements; and an on/off controller controlling to turn the (1-1)to (1-M)light emitting elements and (2-1)to (2-N)light emitting elements on or off according to a level of an operation signal. The on/off controller comprises a first on/off control unit controlling to turn the (1-m)light emitting element and (2-1)to (2-N)light emitting elements on or off, and a second on/off control unit controlling to turn the remaining light emitting elements on or off, excluding the (1-m)light emitting element from the (1-1)to (1-M)light emitting elements, wherein the first on/off control unit compensates for a change in a second current flowing in the (2-1)to (2-N)light emitting elements, depending on the temperature, in conjunction with a first current flowing in the (1-m)light emitting element.