摘要
在比较了LED和CCFL(冷阴极荧光管)光源的特点的基础上,选取LED作为HDTV平板液晶屏的背光源。分析了局部调光技术的原理,根据其要求,设计出合适的LED驱动电路和调光电路,使液晶屏获得了5000:1的较高的对比度,从而使HDTV清晰度得到提高。
After comparing the characteristic of light of LED and Cold Cathode Fluorescent Lamp(CCFL),we choose LED as the backlight of HDTV tabulate LCD screen.By analyzing the technology of local light adjustment,this paper design an appropriate LED driver and light adjustment circuits according to request.As a result,LCD screen attain the contrast of 5000:1 and hence make HDTV get a higher definition.
出处
《微型电脑应用》
2009年第12期35-37,77,共3页
Microcomputer Applications
基金
国家863计划资助项目(2007AA04Z111)
关键词
LED
局部调光
驱动电路
高清晰度
LED
Local light adjustment
Driver circuits
High definition
