随机振动环境下加固液晶显示器光线透过率变化研究

On Light Transmittance Changing of Rugged LCDs in Random Vibration Environment

针对加固液晶显示器在振动环境下出现的漏光现象,提出了一种有效的分析方法,建立了有限元仿真模型和光学特性仿真模型,对加固液晶显示器振动白斑的现象进行了分析。首先使用简化的加固液晶显示器模型进行有限元分析,再用光学特性仿真软件计算并比较了静止状态和振动环境下液晶显示器光线的透过率,并用试验加以佐证,从液晶显示器光线透过率变化的角度解释了振动白斑现象产生的机理。此外,还分析了大尺寸不同模式和不同加固玻璃厚度的加固液晶显示器在随机振动环境下的光线透过率。所提随机振动环境下液晶显示器光线透过率变化的分析方法有助于提高加固液晶显示器的生产良率,降低生产成本。

The phenomenon of light leakage may appear when a rugged LCD is operated in vibration environment.An effective method is proposed for analysis of the phenomenon.At first,a simplified rugged LCD model is used for making analysis to the finite element,and the optical property simulation software is used for calculating and comparing the transmittance of light in stationary state and vibrating state.Experiment is made to verify the effect,which explains the mechanism of white spot generation from the perspective of the transmittance changing of liquid crystal screen.In addition,the effects of different LCD modes and different thicknesses of rugged glass on the change of light transmittance in random vibration environment are also studied.The proposed method is helpful for improving the yield rate of rugged LCDs and reducing the production cost.