The control of surface anchoring strength can be achieved by using heterogeneous substrates. In contrast to conventional substrates that control the anchoring strength by using temperature or chemical processes, heterogeneous substrates provide surface anchoring to liquid crystal molecules by using a mixed composition of (1) a zero anchoring surface and (2) planar-anchoring patches. To study the dynamics of in-plane-switching liquid crystal displays (IPS-LCDs) under external fields, a new particle-based numerical algorithm is developed to simulate both nematic liquid crystals and heterogeneous surfaces. This new method allows us to create different heterogeneous surfaces easily by adopting predefined distributions of numerical particles. The generated effective anchoring strength from the heterogeneous surface is thus calculated, and the dynamical response is found to be similar to that of conventional homogeneously processed substrates. The results suggest that the use of a heterogeneous LCD cell is a suitable alternative for creating desirable LCD substrates, for which chemical/temperature dependence can be transferred to a more controllable configurational dependence. Interestingly, we found master curves in the peak transmittance/recovery time phase space, and they appeared to be dependent solely on the cell thickness. This discovery clarifies the fundamental optical dynamics of IPS-LCD cells.

中文翻译：

---

使用异质衬底的面内切换液晶单元的动力学控制。

可以通过使用非均质基材来控制表面锚固强度。与通过使用温度或化学工艺来控制锚固强度的常规基板相反，异质基板通过使用（1）零锚固表面和（2）平面锚固贴片的混合成分，将表面锚固到液晶分子上。为了研究面内切换液晶显示器（IPS-LCD）在外部场下的动力学特性，开发了一种新的基于粒子的数值算法来模拟向列液晶和异质表面。这种新方法使我们能够通过采用数字粒子的预定义分布轻松地创建不同的异质表面。因此计算出了从异质表面产生的有效锚固强度，并且发现动力学响应与常规均质处理的基材相似。结果表明，使用异质LCD单元是创建理想的LCD基板的合适替代方法，对于该基板，化学/温度依赖性可以转换为更可控的结构依赖性。有趣的是，我们在峰值透射率/恢复时间相空间中发现了主曲线，它们似乎完全取决于细胞的厚度。该发现阐明了IPS-LCD单元的基本光学动力学。可以将化学/温度依赖性转变为更可控制的构型依赖性。有趣的是，我们在峰值透射率/恢复时间相空间中发现了主曲线，它们似乎完全取决于细胞的厚度。该发现阐明了IPS-LCD单元的基本光学动力学。可以将化学/温度依赖性转变为更可控制的构型依赖性。有趣的是，我们在峰值透射率/恢复时间相空间中发现了主曲线，它们似乎完全取决于细胞的厚度。该发现阐明了IPS-LCD单元的基本光学动力学。