TFT-LCD背光亮度调节系统在速示器中的应用  

Application of TFT-LCD backlight brightness adjusting system in a tachistoscope

作　　者：陈劲[1] 吴晓荣 苗祺[1] 于浩[1] 王罡[1] 胡畔[1] 

机构地区：[1]天津师范大学物理与电子信息学院,天津300074

出　　处：《天津工业大学学报》2006年第3期55-57,共3页Journal of Tiangong University

基　　金：天津市自然科学基金资助项目(043600211)

摘　　要：基于背板光源的亮度及亮/灭独立可控是速示器达到1 ms显示精度的重要手段之一,而薄膜晶体管液晶显示器(TFT-LCD)的背光通常不可控,提出一种独立可控的液晶背光调节系统．依据半导体发光器件亮度与端电压的对应关系,通过软件实现背光状态的实时调节．文中对该系统进行了理论分析,并给出其硬件及软件的结构．The controllability of backlight brightness and its on/off state is important for achieving 1 ms display precision of tachistoscope, while the backlight of thin film transistor liquid crystal display（TFT-LCD） is generally uncontrol- lable. Thus, an independent controllable LCD backlight adjusting system is present. According to the corre- spondence of the brightness of semiconductor illuminant and its port voltage, the real-time regulating of back- light state is implemented by software. The system is theoretically analyzed. The structure of the hardware and

关 键 词：亮度调节 液晶显示 背板光源 速示器 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]