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用于野外及高寒、高热地带的液晶显示器,环境温度变化很大,一般要求模块的工作温度-45～+80℃,而且负温工作有较快的响应速度.但由于显示器液晶材料的使用温度范围较窄且温度效应比较严重,当温度过高时,液晶态会消失,不能显示;温度过低时,阈值电压升高,响应速度变慢,直至结晶,使显示器件损坏.以TN-LCD静态屏为例,常温型器件温度范围在-5～+50℃;宽温型器件工作温度范围在-20～+60℃,而点阵的多路显示器件的实际温度范围则比前述的温度范围窄5～10℃.目前国外已研制出宽温液晶材料,该材料具有较高的清亮点和较低的粘度系数,内含添加剂可补偿液晶材料因温度的改变而引起的阈值电压的变化,使液晶材料在宽温度范围内有较为一
For the field and alpine, high temperature zone of the liquid crystal display, the ambient temperature varies widely, the general requirements of the module operating temperature -45 ~ +80 ℃, and negative temperature work faster response speed.But the display liquid crystal material temperature When the temperature is too high, the liquid crystal state disappears and can not be displayed; when the temperature is too low, the threshold voltage increases, the response speed becomes slow, until the crystallization, so that the display device is damaged. TN-LCD Static screen, for example, the room temperature device temperature range -5 ~ +50 ℃; wide temperature device operating temperature range -20 ~ +60 ℃, and the dot matrix multi-channel display device is the actual temperature range than the aforementioned temperature The narrow range of 5 ~ 10 ° C. At present, foreign countries have developed a wide temperature liquid crystal material, the material has a high clearing point and a lower viscosity coefficient, containing additives to compensate for liquid crystal materials due to temperature changes caused by the threshold voltage changes , The liquid crystal material in a wide temperature range is more one