液晶与显示2018，Vol.33Issue(3)：182-187,6.DOI:10.3788/YJYXS20183303.0182
基于FFS架构实现宽窄视角切换
New viewing angle controllable with FFS-LCD
摘要
Abstract
Due to the privacy requirements of public places,viewing angle switchable liquid crystal dis-play(LCD)technology has been an urgent market demand.The current viewing angle switchable technologies not only increase the thickness and cost of the display device,but also reduce the original wide viewing angle mode display.In this paper,a viewing angle controllable FFS mode with negative LC is proposed.By applying a high pre-tilt angle(40° ~ 60°)on the side of the color filter,the third electrode is ipsilateral as color filter.When a weak electric field is applied to the third electrode,LC molecules from the axis direction have a large phase delay.The formation of large viewing angle has the dark state of light leakage and contrast reduction,resulting in the narrow viewing angle display mode.When the strong electric field is applied to the third electrode,the LC molecules with large in-clination angle decrease the inclination angle due to the negative dielectric anisotropy,w hich can reduce the dark light leakage and enhance the contrast,resulting in the wide viewing angle mode.The experiment results show that the viewing angle of all the direction can reach more than 85°in the wide viewing angle mode,and the left and right viewing angles are only 40°in narrow viewing angle mode with good symmetry.Due to the simple structure and flexible driving,the technology shows great po-tential application in anti-peep display.关键词
FFS模式/对比度/视角可控Key words
Fringe Field Switching/contrast ratio/controllability of viewing angle分类
信息技术与安全科学引用本文复制引用
朱梦青,陆建钢..基于FFS架构实现宽窄视角切换[J].液晶与显示,2018,33(3):182-187,6.基金项目
国家自然科学基金(No.61775135)Supported by National Natural Science Foundation of China(No.61775135) （No.61775135）
