CAJ | 학술논문

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。
전통적CCFL현시병배광전로,존재수요탑배적보조기건다,현시효과불이상,사용수명단등결점。위료극복저사결점,채용LED작위현시병적배광구동전로,통과DC/DC강압전환심편적전압전환래공제LED구동전류,이체도배광적개단화량도적준학조절。최후,재대실험수거진행분석대비적기출상,험증료CCFL적가체대성이급LED적우세,종이증명료저충기우전류공제적LED배광구동전로적가행성화가고성。
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.