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1.河北工业大学 应用物理系, 天津 300401
2.河北工业大学 电子信息工程学院, 天津 300401
[ "付明珠(1992-), 女, 河北邢台人, 硕士研究生, 从事液晶器件方面研究。E-mail:13682005283@163.com" ]
孙玉宝, E-mail: sun_yubao@163.com
收稿日期:2017-02-27,
录用日期:2017-4-1,
纸质出版日期:2017-09-05
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付明珠, 郭玉强, 任亚璇, 等. 快速响应的共面转换型液晶显示器[J]. 液晶与显示, 2017,32(9):685-691.
Ming-zhu FU, Yu-qiang GUO, Ya-xuan REN, et al. Fast-response in-plane switching liquid crystal display[J]. Chinese journal of liquid crystals and displays, 2017, 32(9): 685-691.
付明珠, 郭玉强, 任亚璇, 等. 快速响应的共面转换型液晶显示器[J]. 液晶与显示, 2017,32(9):685-691. DOI: 10.3788/YJYXS20173209.0685.
Ming-zhu FU, Yu-qiang GUO, Ya-xuan REN, et al. Fast-response in-plane switching liquid crystal display[J]. Chinese journal of liquid crystals and displays, 2017, 32(9): 685-691. DOI: 10.3788/YJYXS20173209.0685.
共面转换液晶显示器(IPS-LCD)由于其具有可视角度大、色彩真实、画质出色等优点,在平板显示器中得到了广泛应用,然而响应速度慢限制了其在高端显示器中的应用。本文中,首先通过采用正性液晶,对IPS类型中的边缘场转换型(FFS)和边缘场共面转换型(FIS)的液晶显示器,不同摩擦角度下的电光特性和响应时间进行了模拟计算。然后从预倾角度、电极尺寸以及弹性常数出发,对FIS液晶盒结构参数进行了优化,提出了一种快速响应的液晶显示器。我们通过计算机模拟发现,在FFS液晶盒中,摩擦角度对工作电压具有较大影响,小摩擦角度可实现高透过率、低工作电压;而在FIS液晶盒中,摩擦角度对响应时间具有较大影响,大于10°时与2°时相比,响应速度可提高82.7%以上。并且,不同摩擦角度下,弹性常数对FIS液晶显示器的响应速度影响不同,摩擦角度为2°时,响应速度与弹性常数
K
11
、
K
22
、
K
33
都有关,而摩擦角度为12°时,响应速度只与
K
22
有关,这个原因导致了12°与2°时相比,响应速度提高了84.2%。
Excellent viewing angle and outstanding ability of color reproduction in-plane switching liquid crystal displays (IPS-LCDs) are widely applied in TFT-LCD. However
its development in high-end LCD is limited by its slow response. In this paper
the electro-optic characteristics and response time of FFS and FIS modes in the IPS type are simulated with different rubbing angle by using the positive liquid crystal material. Furthermore
we report a simple method to reduce the response time in the fringe and in-plane switching (FIS) cell by optimizing tilt angle
electrodes size
and elastic constants. Through the simulations
we can obtain that the rubbing angle has a great influence on operating voltage in FFS cell
and small rubbing angle can achieve high transmittance and low operating voltage. However
the rubbing angle has a great impact on the response time in FIS cell. When the angle is greater than 10°
the response speed is increased by more than 82.7% compared with 2°. In addition
the elastic constants have an effect on the response time under different rubbing angles in the FIS mode. When the rubbing angle is 2°
the response speed is related to
K
11
K
22
and
K
33
.
When the rubbing angle is 12°
the response speed is only related to
K
22
which results in an increase in switching speed of 84.2% compared to 2°.
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