LED背光对LCD色彩的影响

摘要

通过试验研究了不同驱动电流下LED背光透过液晶器件时TFT-LCD白色色度坐标在驱动电流影响下的变化规律、LCD的红绿蓝3色辉度以及LCD色域与驱动电流变化的关系.实验结果表明液晶屏平均亮度和液晶屏中心RGB亮度随驱动电流呈线性变化,而液晶屏中心色域值几乎与驱动电流变化无关.%The change law of TFT-LCD white chromaticity coordinate under the influence of drive current is studied by experiment when LED backlight passes through liquid crystal devices under different drive currents. The relation of red, green and blue luminance of LCD, color gamut and the change of drive current are also studied. The experimental results show that the average luminance of liquid crystal and RGB luminance in the centre of liquid crystal present linear change with drive.current changing. The color gamut value in the centre of liquid crystal is nearly irrelevant to the change of drive current