Name
Abstract | ||
|---|---|---|
One of the key challenges in driving multiple light-emitting-diode (LED) strings for a liquid-crystal-display (LCD) backlight system is to ensure uniform current control. Unequal current sharing between the strings is due to manufacturing spread and temperature variations. In this paper, a novel current-balancing circuit for LED backlights is proposed. A smart combination of an inherent symmetry of circuit and capacitive balancing mechanism enables an efficient and cost-effective current balancing. The operating principle of the proposed method is analyzed, and an appealing generalization is made. The feasibility of the proposed scheme is verified by developing a hardware prototype with a dimming feature to drive a 100-W edge-type backlight system, having six LED strings for a large-scale LCD panel. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/TIE.2011.2138112 | IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS |
Keywords | Field | DocType |
Backlight, current balancing, light-emitting-diode (LED) driver, liquid crystal display (LCD) | Capacitor,Capacitive sensing,Electronic engineering,Electrical impedance,Backlight,Liquid-crystal display,Light-emitting diode,Engineering,Artificial neural network,Current sharing | Journal |
Volume | Issue | ISSN |
59 | 4 | 0278-0046 |
Citations | PageRank | References |
12 | 1.38 | 4 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| SungJin Choi | 1 | 194 | 21.75 |
| Tae-Hoon Kim | 2 | 459 | 53.02 |