ABSTRACT

The mutual influence between the tilt angle change and the flow effect in the liquid crystal display (LCD) is called the backflow effect. The backflow effect is manifested in the form of optical bounce (OB) in the applying voltage vertical alignment liquid crystal display (VA-LCD). The OB phenomenon greatly increases the response time and limits the application of the VA-LCD in LC devices that require fast response speed. In this article, a small amount of bi-functional linear polymer monomer RM257 added in VA-LCD can eliminate the OB phenomenon after polymerisation, and fast response speed is achieved. A small amount of RM257 increases the saturation voltage, and slightly reduces the transmittance of the bright state. The polarising optical microscope (POM) and scanning electron microscope (SEM) is used to analyse the physical mechanism of the lower transmittance and eliminating the backflow effect. The VA-LCD with polymer monomer has the simple manufacturing process and fast response speed, and has an important significance for the broad application of VA-LCD.

摘要

液晶显示器（LCD）中倾角变化与流动效应之间的相互影响称为回流效应。回流效应在施加电压的垂直配向液晶显示器（VA-LCD）中以光反弹（OB）的形式表现出来。OB现象大大增加了响应时间，限制了VA-LCD在要求快速响应速度的LC器件中的应用。在本文中，VA-LCD中加入少量双官能线性聚合物单体RM257可以消除聚合后的OB现象，实现快速响应速度。少量的RM257增加了饱和电压，并略微降低了亮态的透射率。偏光显微镜（POM）和扫描电子显微镜（SEM）用于分析降低透光率和消除回流效应的物理机制。采用聚合物单体的VA-LCD制造工艺简单，响应速度快，对VA-LCD的广泛应用具有重要意义。