液晶显示器侧视角发红机理分析及改善

Mechanism analysis and improvement of reddish side-view on LCD

针对于液晶显示器出现的侧视角发红不良,本文从定性及定量角度进行机理分析。初步实验定性确定影响侧视角发红的主要因素为材料R_(th)和颜料颗粒分布。定量分析方面,通过对R_(th)、膜层厚度、上偏振片偏振方向与主观察方向的夹角(A-UPMO)、透过光主波长4个方面的分析,得到侧视角不良程度的理论计算公式。根据上述结论,通过减小R_(th),减薄膜层厚度以及缩小A-UPMO可以有效改善不良程度。给出通常情况下,新材料开发过程中Red/Green/Blue R_(th)的阈值分别为6.0nm/5.4nm/4.0nm,为未来新材料开发及不良改善提供有益的参考。

The mechanism of side-view reddish in LCD is analyzed by the qualitative and quantitative side in this paper.The qualitative result shows that the main factors which influence the side-view reddish are Rth and pigment particle distribution of the material.In the quantitative analysis,the theoretical formula which can simulate the level of side-view reddish is obtained by analyzing Rth,thickness of the film,angle between upper polarizer’s polarization direction and main observation direction（A-UPMO）and the main wavelength of the transmitted light.According to the above conclusions,side-view reddish can be improved effectively by reducing Rth,thinning film thickness and reducing the A-UPMO.In general,the threshold of Rth for Red/Green/Blue material each is 6.0nm/5.4nm/4.0nm.The research will give guiding theory for new material development and issue improvement in the future.