液晶显示近乎覆盖了所有的应用显示领域，在非显示领域也展现出了高精度、多参量调控的应用特点。目前，针对高速调控应用，液晶器件仍需进一步提升其响应速度。为此，过压驱动技术走进了研究者们的视野。本文主要综述了应用于液晶显示与调控领域的过压驱动技术。首先，简明介绍了过压驱动技术的原理和主要应用，以及在不同类型液晶显示器中应用过压驱动技术后，器件响应等性能的优化提升。此外，对过压驱动技术在非显示领域液晶器件中的应用进行了介绍，如空间光调制器和液晶透镜等。最后，总结了过压驱动技术用于液晶显示所面临的技术问题，概括了现有的主要解决手段，并对其需要突破的技术瓶颈和未来发展方向进行了展望。

本文设计了一款机械性能优异和具有独特防伪功能的液晶柔性显示薄膜。首先，基于光控取向技术设计了一款具备双通道显示功能的液晶显示器件，通过光场调控实现两个通道的独立显示。其次，以液晶盒厚度作为对照组确定了最佳厚度，使两个独立图案形成主副显示效果，从而隐藏防伪信息。最后，通过在液晶-聚合物复合材料中掺杂银纳米线（AgNWs）?改善了液晶显示薄膜的机械拉伸性能。实验结果表明，在液晶柔性显示薄膜厚度为60 μm时，其呈现令人满意的图案显示效果。同时，与未掺杂AgNWs的液晶显示薄膜相比，掺杂了AgNWs的液晶柔性薄膜的模量参数提高了30%以上，具备更大的应力承受能力和应变范围。本研究对于制备信息丰富且稳定性强的液晶防伪商标具有积极意义。

Interactive holography offers unmatched levels of immersion and user engagement in the field of future display. Despite of the substantial progress has been made in dynamic meta-holography, the realization of real-time, highly smooth interactive holography remains a significant challenge due to the computational and display frame rate limitations. In this study, we introduced a dynamic interactive bitwise meta-holography with ultra-high computational and display frame rates. To our knowledge, this is the first reported practical dynamic interactive metasurface holographic system. We spatially divided the metasurface device into multiple distinct channels, each projecting a reconstructed sub-pattern. The switching states of these channels were mapped to bitwise operations on a set of bit values, which avoids complex hologram computations, enabling an ultra-high computational frame rate. Our approach achieves a computational frame rate of 800 kHz and a display frame rate of 23 kHz on a low-power Raspberry Pi computational platform. According to this methodology, we demonstrated an interactive dynamic holographic Tetris game system that allows interactive gameplay, color display, and on-the-fly hologram creation. Our technology presents an inspiration for advanced dynamic meta-holography, which is promising for a broad range of applications including advanced human-computer interaction, real-time 3D visualization, and next-generation virtual and augmented reality systems.

Active metasurfaces have recently attracted more attention since they can make the light manipulation be versatile and real-time. Metasurfaces-based holography possesses the advantages of high spatial resolution and enormous information capacity for applications in optical displays and encryption. In this work, a tunable polarization multiplexing holographic metasurface controlled by an external magnetic field is proposed. The elaborately designed nanoantennas are arranged on the magneto-optical intermediate layer, which is placed on the metallic reflecting layer. Since the non-diagonal elements of the dielectric tensor of the magneto-optical material become non-zero values once the external magnetic field is applied, the differential absorption for the left and right circularly polarized light can be generated. Meanwhile, the amplitude and phase can be flexibly modulated by changing the sizes of the nanoantennas. Based on this, the dynamic multichannel holographic display of metasurface in the linear and circular polarization channels is realized via magnetic control, and it can provide enhanced security for optical information storage. This work paves the way for the realization of magnetically controllable phase modulation, which is promising in dynamic wavefront control and optical information encryption.