新型电极结构的蓝相液晶显示器

发布时间：2018-03-08 19:28

本文选题：蓝相液晶　切入点：高透过率　出处：《河北工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：近几年来，蓝相液晶显示器因具有工艺简单、高对比度、宽视角和快速响应等优点被国内外广大学者争相研究。但是，驱动电压高和透过率低等问题，成为制约蓝相液晶显示器商业化生产的两大瓶颈。通过电极结构设计，驱动电压高问题已经解决，但是蓝相液晶显示器透过率低问题依然存在。本文为了改善蓝相液晶显示器的透过率，提出了几种新型电极结构的蓝相液晶显示器。第一章详细的阐述了蓝相液晶与聚合物稳定蓝相液晶的结构特征和制备过程。分析了蓝相液晶的工作原理，并通过总结液晶显示器的性能指标，得出蓝相液晶在显示应用中的巨大潜力。介绍了蓝相液晶显示器的两种主要结构，IPS结构和VFS结构。分析了蓝相液晶在透反显示和视角可控显示等多功能显示中的优势。第二章给出了蓝相液晶模拟计算的理论基础。通过应用扩展琼斯矩阵和蓝相液晶的克尔效应，可以计算入射光在任意方向进入蓝相液晶盒后的电光特性。给出几种常见的偏振光和偏振光器件的琼斯矩阵，，为模拟计算带来便利。第三章提出一种高透过率蓝相液晶显示器。该结构在不影响电极之间透过率的同时，增大了电极上方的透过率，并且保持了蓝相液晶显示器的宽视角特性。而且由于像素电极和公共电极可以构成存储电容，提高了液晶显示器的开口率。第四章提出一种视角可控透反式蓝相液晶显示器。该结构展示出一个良好的透反显示和视角可控显示。并且，当透反显示时，VT曲线和VR曲线匹配良好，因此可以使用单伽马曲线进行驱动；视角可控显示时，可以实现宽窄视角的自由切换。第五章提出一种低电压透反式蓝相液晶显示器。通过将下基板电极做成双渗透电极或者凸起电极，显示器的驱动电压可以降低到10V左右。通过设置下基板的刻蚀深度或者凸起高度，以及上基板的电极宽度与电极间隙，实现VT曲线和VR曲线的良好匹配。
[Abstract]:In recent years, blue-phase liquid crystal displays have been studied by many scholars at home and abroad for their advantages of simple process, high contrast, wide viewing angle and fast response. Through the design of electrode structure, the problem of high driving voltage has been solved. In order to improve the transmittance of blue liquid crystal displays, several new types of blue liquid crystal displays with electrode structure are proposed in this paper. In the first chapter, the structure characteristics and preparation process of blue liquid crystal and polymer stabilized blue liquid crystal are described in detail. The working principle of blue phase liquid crystal is analyzed, and the performance index of liquid crystal display is summarized. The great potential of blue liquid crystal in display application is obtained. Two main structures of blue liquid crystal display (IPS) and VFS are introduced. The advantages of blue liquid crystal in multi-function display such as transparent display and angle controlled display are analyzed. In the second chapter, the theoretical basis for the simulation of the blue phase liquid crystal is given. By applying the extended Jones matrix and the Kerr effect of the blue phase liquid crystal, The electro-optic characteristics of the incident light entering the blue liquid crystal cell in any direction can be calculated, and some common Jones matrices of polarized light and polarized light devices are given, which will facilitate the simulation and calculation. In chapter 3, a blue liquid crystal display with high transmittance is proposed. The structure increases the transmittance over the electrodes without affecting the transmittance between the electrodes. It also maintains the wide viewing angle characteristic of the blue liquid crystal display, and because the pixel electrode and the common electrode can form the storage capacitance, the opening rate of the liquid crystal display is improved. In Chapter 4th, a kind of view controlled transparent blue phase liquid crystal display is proposed. The structure shows a good reflection display and a controlled angle display. Moreover, the VT curve and VR curve match well when the view is reflected. Therefore, the single gamma curve can be used to drive and the angle of view can be switched freely when the view angle is controlled. In Chapter 5th, a low voltage transparent blue phase liquid crystal display is proposed, which is made into a double permeable electrode or a protruded electrode by using a lower substrate electrode. The driving voltage of the display can be reduced to about 10V. by setting the etching depth or the raised height of the substrate, and the electrode width and the electrode gap of the upper substrate, the VT curve and the VR curve can be well matched.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN873.93

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