Analysis Of Optical Properties Of Airborne Liquid Crystal Display In Random Vibration Environment

Liquid crystal displays present wide applications due to their advantages such as small size,low energy consumption,and strong stability,including airborne displays.However,the working environment of airborne displays is extremely harsh,especially in the environment of severe vibration,light leakage phenomenon is easy to occur,so it is of great significance to analyze the degree of light leakage of the airborne liquid crystal display in a random vibration environment by using simulation methods,which can help predict display defects and improve display quality during the development stage.This thesis proposes an analysis method for the optical characteristics of airborne liquid crystal displays under random vibration.First,take a small-sized airborne LCD as an example,establish a finite element simulation model,calculate its response under a random vibration environment,take out the response in the frequency domain to perform an inverse Fourier transform,and according to human eye critical flick frequency to get the response in the time domain,so that it can smoothly perform simulation analysis of optical characteristics.After that,a random vibration test of the same airborne LCD was carried out to verify the effectiveness of the analysis method.According to the determined method,a large-size airborne LCD was analyzed.The thickness of the rugged glass,the display mode and the distribution of the fixed positions were analyzed and the related suggestions were proposed.In addition,a dual-layer LCD is applied to the airborne display.By analyzing the optical characteristics,the light leakage under random vibration environment has a better performance.The dual-layer LCD also has great advantages in contrast,gray scale and viewing angle.The simulation analysis method proposed in this thesis can help shorten the research and development cycle of the airborne LCD and reduce the research and development costs.Dual-layer LCD provides a new solution for improving the optical characteristics of the airborne display under random vibration environments.