摘要
传统的CCFL显示屏背光电路,存在需要搭配的辅助器件多,显示效果不理想,使用寿命短等缺点。为了克服这些缺点,采用LED作为显示屏的背光驱动电路,通过DC/DC降压转换芯片的电压转换来控制LED驱动电流,以达到背光的开断和亮度的准确调节。最后,在对实验数据进行分析对比的基础上,验证了CCFL的可替代性以及LED的优势,从而证明了这种基于电流控制的LED背光驱动电路的可行性和可靠性。
Traditional CCFL display backlight circuit exists some disadvantages,such as auxiliary devices,the display is not ideal and the life is short and so on.To overcome these drawbacks,this paper uses LED as the display backlight driver circuit and have the DC/DC buck converter chip voltage converter to control the LED drive current to achieve accurate adjustment of the breaking and brightness of the backlight.Finally,on the basis of analysis and comparison of experimental data,we verified CCFL substitutability and the advantages of LED and proved the feasibility and reliability of LED backlight driver circuit which based on the current-controlled.
出处
《运城学院学报》
2012年第2期51-53,共3页
Journal of Yuncheng University
