Title:
LIGHT-EMITTING ELEMENT DRIVING CIRCUIT AND OPERATING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2015/056905
Kind Code:
A1
Abstract:
A light-emitting element driving circuit is disclosed. The light-emitting element driving circuit for driving a light-emitting unit receiving rectified power through one end thereof and having first to Nth light-emitting modules (N ≥ 2) connected in series in an order closer to the one end, according to one aspect of the present embodiment, comprises: a driving power source unit which has N power source modules and generates driving power by connecting one end of a Kth power source module to a terminal located further from the one end among both terminals of a Kth light-emitting module (1 ≤ K ≤ N); a current source unit which has N current source modules each of which corresponds to the Kth power source module, and which generates a light-emitting current by connecting one end of a Kth current source module to the one end of the Kth power source module; a reference signal generation unit for receiving the rectified power and generating a control signal; and a current driving unit which has N driving modules, each corresponding to the Kth power source module, wherein a Kth driving module receives the driving power from the Kth power source module and controls the Kth current source module according to the generated control signal to generate the light-emitting current.
Inventors:
RYOO TAEHA (KR)
JEONG DONGYOUL (KR)
JEONG DONGYOUL (KR)
Application Number:
PCT/KR2014/009101
Publication Date:
April 23, 2015
Filing Date:
September 29, 2014
Export Citation:
Assignee:
DMB TECHNOLOGY CO LTD (KR)
International Classes:
H05B37/02
Foreign References:
| KR101273384B1 | 2013-06-11 | |||
| KR101272033B1 | 2013-06-07 |
Attorney, Agent or Firm:
LEE, CHULHEE (KR)
이철희 (KR)
이철희 (KR)
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