太阳光对液晶显示器件光学特性的影响

Influence of Sun Radiation on Optical Properties of Liquid Crystal Display Device

太阳光对液晶显示器件的影响主要表现在它对其液晶显示器件光稳定性和寿命的影响,从而引起液晶显示器件的迅速老化。通过用分光光度计测量经过不同时间太阳光辐照后液晶显示器件的光谱特性,研究长时间阳光辐照对液晶显示器件的光学性能的影响,分析其光学性能的变化。结果表明,B组普通计算器液晶显示器和C组电话液晶显示器两组液晶片的光学特性类似,品质较好;而A组台式计算器液晶显示器液晶片的老化问题明显比B,C两组严重,品质较差。液晶显示器件长时间受阳光辐照,液晶结构会相应发生变化,光学性能也发生相应变化,表现为液晶表面变黄发黑,其光谱透射特性明显下降。这与液晶材料及制作工艺有关。

Sunlight affects mainly the light stability and life of liquid crystal display device, which will lead to rapid aging of the device. By measuring the optical properties of liquid crystal display devices radiated with different time by spectrophotometer, the influences of long time sunlight radiation on the optical properties of the device were studied, and the changes of its optical properties were analyzed. The results indicate that structural and optical properties of liquid crystal slices of calculator LCD （B group） and tdephone LCD （C group） are similar and the qualities are relatively good, while the aging problem of personal computer LCD （A group） liquid crystal .slice is more serious than those of B and C groups, moreover, the qualities of liquid crystal slices in A group are worse. The structural and optical properties of liquid crystal display device will change accordingly after long time sunlight radiation. The surface of liquid crystal display device will become yellow and nigrescent, and the spectrum transmission properties will decline markedly, which is related to liquid crystal materials and manufacturing techniques.