一种侧光式LED背光源的电路设计  

Circuit Design of Edge Light LED Backlight

作　　者：李秀真[1] 许燕文[2] 万丽芳[2] 王庆江[2] 赵星星[2] 

机构地区：[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

出　　处：《液晶与显示》2010年第2期250-252,共3页Chinese Journal of Liquid Crystals and Displays

摘　　要：设计了一款侧光式LED背光源。LED阵列选择长条式设计,用铝基板加工制作。驱动模块采用升压转换器,支持过压保护。控制模块通过单片机产生PWM波对LED灯条进行亮度控制。所设计的背光源电路简单,支持按键式调光,中、大尺寸LED背光源均可借鉴使用。An edge light LED backlight is designed in this paper. LED array is designed with rectangle type,processed with MCPCB. Boost inverter which supports over-voltage protection is used in the driver module. The brightness of LED light-bar is controlled by PWM wave produced from single-chip microcomputer in the control module. A LED backlight is designed in this paper,which has a good optical effect and supports keyboard dimming. The circuit is simple in this design. This paper can also be used for the design of medium-sized and large size LED backlight.

关 键 词：LED背光 CCFL 色彩还原性 单片机 

分 类 号：TN141.9[电子电信—物理电子学]