| 一种直下式LED背光源驱动电路的设计 |
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| 引用本文： | 李秀真,张凯亮,马丽,许燕文.一种直下式LED背光源驱动电路的设计[J].现代显示,2009,20(3):58-60. |
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| 作者姓名： | 李秀真 张凯亮 马丽 许燕文 |
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| 作者单位： | 1. 北京京东方茶谷电子有限公司,北京,100176
2. 京东方科技集团股份有限公司中央研究院,北京,100016 |
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| 摘 要： | 传统的背光源采用的是CCFL，色彩还原性差，含有对人体有害的汞蒸汽。LED背光源是一种新型的背光源，色彩还原性好，寿命长；不含汞，有利于环境保护。本文设计的直下式LED背光源，单灯电流可精确控制，光学效果良好，支持PWM调光。中尺寸、大尺寸LED背光源均可借鉴使用。
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| 关 键 词： | 发光二极管背光 冷阴极荧光灯 色彩还原性 单片机 |
| 收稿时间： | 2008/12/5 |
The Driving Circuit Design of a Direct Illumination-type LED Backlight |
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| LI Xiu-zhen,ZHANG Kai-liang,Ma Li,XU Yan-wen.The Driving Circuit Design of a Direct Illumination-type LED Backlight[J].Advanced Display,2009,20(3):58-60. |
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| Authors: | LI Xiu-zhen ZHANG Kai-liang Ma Li XU Yan-wen |
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| Institution: | LI Xiu-zhen,ZHANG Kai-liang,Ma Li,XU Yan-wen(1.Beijing BOE CHATANI Electronics Co.,Ltd.,Beijing 100176,China;2.BOE Technology Group CO.,Ltd.,Beijing 100016,China) |
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| Abstract: | CCFL iS used in the traditional backlight，which has bad color gamut and contains hydrargyrun steam which is harmful t0 human body．As a new kind of backlight．LED backlight has better color gamut，longer life-span；and is friendly to environm enta1．It also does not contain hydrargyrun．A direct illumination-type LED backlight is designed in this paper，which has a good optical effect，and can be adjusted by PWM．Each LED can be controlled separately in this design．This paper can also be used for the design of medium-sized and large size LED backlight． |
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| Keywords: | LED Backlight CCFL color gamut single-chip microcomputer |
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