在PVA显示模式的基础上,研究了一种新型的液晶显示视角切换技术.通过增大液晶分子在暗态下的倾斜角度控制暗态亮度,实现了宽视角下暗态低,显示对比度高;窄视角下暗态高,在相同白态亮度下,显示对比度低.实施可行性:在时序控制芯片系统(Timing Controling,Tcon)中烧录两版code,使用者根据不同环境下对宽窄视角的特性需求选择相应的显示模式,通过宽窄视角下分别采用不同的Tcon code编译驱动电压以实现宽窄视角的面板显示.模拟结果表明:宽视角显示上下左右视角达到80°以上,而窄视角显示上下左右视角均不足40°,从模拟结果看本文提供的宽窄视角显示方法是有效的.

Based on the PVA mode,this paper researches a new technology of viewing angle controllable LCD.By increasing the pretilt angle of liquid crystal molecular at dark states,it realizes a high contrast with low dark luminance at wide-viewing angle(WVA) mode and low contrast with high dark luminance at narrow-viewing angle(NVA) mode.By burning different code to Tcon ROM,according to the demand of users to realize WVA or NVA at different conditions,it gets two types of source voltages.The simulation results show that the up/down/left/right view angle are more than 8°at WVA and less than 40° at NVA,the results show that the new viewing angle controllable technology is effective.