摘要
加固液晶显示模块在温度变化时,由于光学胶、加固玻璃、偏振片等元件的热膨胀系数、弹性模量、泊松比的不同,会对液晶产生额外的热应力。针对加固液晶显示模块建立有限元分析模型,仿真分析了高温环境下不同光学胶厚度、不同光学胶工艺和不同加固玻璃厚度对液晶屏的影响。仿真结果表明:当加固玻璃的厚度为2.3 mm,光学胶的厚度为300μm,采用固化后弹性模量为1.65E7 Pa、热膨胀系数为1.2E-3/℃、泊松比为0.44的光学胶固化工艺,模块的变形量、应变和应力值最小,有利于保证模块的显示性能。
Due to the different thermal expansion coefficients,elastic modulus,and Poisson ratio of the optical cement adhesive,rugged glass,and polarizer,some thermal stress will perform on a rugged LCD when the ambient temperature changes. The paper establishes the finite element analysis model of the rugged LCD in the high ambient temperature to simulate the possible thermal stresses with different adhesive thicknessdifferent ruggedizati on processes,and different rugged glass thickness. The simulation results show that：When the rugged glass thickness is 2. 3 mm,the adhesive thickness is 300 μm,and the elastic modulusthermal expansion coefficient,Poisson ratio of the adhesive is respectively 1. 65E7 Pa,1. 2E-3 / ℃ ,and0. 44,the displacement,the strain,the stress of the rugged LCD is the least,which helps guarantee the display performance.
出处
《电光与控制》
北大核心
2015年第1期76-79,83,共5页
Electronics Optics & Control
基金
安徽省科技计划项目(1206c0805007)
国家"八六三"项目(2012AA011901)
