共面转换液晶显示器(IPS-LCD)由于其优异的视角特性和色彩还原能力在TFT-LCD中得到了广泛应用, 然而响应速度慢的缺点始终限制着其在高端液晶显示器中的发展。本文中提出一种凸起电极结构的共面转换液晶显示器, 并采用TechWiz软件模拟了该结构的电光特性。与传统IPS-LCD相比, 我们提出的新结构IPS-LCD的驱动电压降低了2.3 V。在响应时间方面, 尽管驱动电压降低了, 但是由于凸起电极改变液晶层中的电场状况, 因此上升响应速度得到了一定提高。此外, 凸起结构减小了液晶层的等效盒厚, 因为下降时间正比于液晶盒厚的平方, 所以下降响应速度也得到了明显提高, 该结构的整体响应速度相比传统结构提高了大约38%。

In-plane switching liquid crystal displays (IPS-LCDs) are widely applied in TFT-LCD for its excellent viewing angle and outstanding ability of color reproduction. However, its development in high-end LCDs is limited by its slow response. A fast response IPS-LCD with protrusion electrode is proposed in this paper, and its optical characteristics is simulated by TechWiz software. With the protrusion electrode, the driving voltage of IPS-LCD is reduced by 2.3 V. Although the driving voltage is reduced, the electric field in the liquid crystal layer is changed due to the electrode on protrusion, so the rise response speed is improved. In addition, the protrusion structure reduces the effective cell gap of the LC layer, and the decay time is proportional to the square of the cell thickness, so the decay response speed is also obviously improved. The whole response speed is improved by approximately 38% in contrast with the conventional IPS-LCD.