TITLE

一种宽视角和快速响应的连续视角可控液晶显示

AUTHOR(S)
侯柳强; 王森; 马红梅; 孙玉宝
PUB. DATE
July 2016
SOURCE
Chinese Journal of Liquid Crystal & Displays;Jul2016, Vol. 31 Issue 7, p661
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Vertical alignment liquid crystal display mode has good dark state, so that it has high contrast ratio. However,it's viewing angle is not good.The viewing angle can be improved by using multi-domain vertical alignment (MVA) and patterned electrode vertical alignment (PVA). However, the protrusion in MVA may lead to light leakage because of the small tilt angle in the initial state, which reduces the contrast ratio. While the light leakage is removed in PVA because the protrusion is replaced by the patterned electrode, the trade-off is slower response speed. In this paper, we proposed a new vertical alignment liquid crystal display device with four etched cambered hollows at the edges of the pixel electrode and a circular hole at the centre of the common electrode. The liquid crystal molecules fall down to the centre of the substrate when the operating voltage is applied, as a result, the centro-symmetric structure leads to the wide viewing angle and uniform contrast ratio. Moreover, this structure can improve the response speed and has a high transmittance. In addition, the continuous change of viewing angle controlled by bias voltages on common electrode can be obtained.
ACCESSION #
118054378

 

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