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Liquid crystal on silicon (LCoS) panels are pivotal to high-resolution optical projection and imaging displays, yet their inherent polarization sensitivity and reliance on multi-chip architectures for color reproduction constrain the upper limit of light utilization, increase system complexity and restrict broader applicability. Here, we demonstrate a monolithic color meta-LCoS prototype that integrates dual-layer metasurfaces to achieve polarization-insensitive, full-color amplitude modulation on a single chip. Polarization sensitivity is eliminated via a synergistic design combining metasurface-enabled polarization conversion and voltage-controlled liquid crystal phase modulation, achieving a high-contrast, polarization-insensitive optical switch. By embedding red, green, and blue metasurface subpixels and meticulously designed off-axis angles, enabling direct color synthesis through a unified device. We showcase a 64-pixel monochrome and a 9-pixel color prototype capable of dynamically projecting diverse patterns under unpolarized illumination. Fully compatible with existing LCoS fabrication processes, our device significantly reduces system complexity and cost, offering transformative applications in next-generation projectors and AR/VR displays.
Liquid crystals on silicon (LCoS) devices are limited by the polarization sensitivity and reliance on complex architectures for full-color integration. Here, the authors demonstrate a metasurface-integrated LCoS device for polarisation-insensitive, full-color amplitude modulation on a single chip.
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; Yu, Dian 1 ; Liu, Shulin 1 ; Lou, Shaozhen 1 ; Shu, Zhiwen 3 ; Wei, Wenzhi 1 ; Liu, Man 1 ; Li, Jianxiong 4 ; Chang, Tianhai 4 ; Liu, Na 5
; Duan, Huigao 6
1 National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, P.R. China (ROR: https://ror.org/05htk5m33) (GRID: grid.67293.39)
2 National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, P.R. China (ROR: https://ror.org/05htk5m33) (GRID: grid.67293.39); Greater Bay Area Institute for Innovation, Hunan University, Guangzhou, P.R. China (ROR: https://ror.org/05htk5m33) (GRID: grid.67293.39); Advanced Manufacturing Laboratory of Micro-Nano Optical Devices, Shenzhen Research Institute, Hunan University, Shenzhen, P.R. China (ROR: https://ror.org/05htk5m33) (GRID: grid.67293.39)
3 Greater Bay Area Institute for Innovation, Hunan University, Guangzhou, P.R. China (ROR: https://ror.org/05htk5m33) (GRID: grid.67293.39)
4 Huawei Technologies Co., Ltd., Bantian, Longgang District, Shenzhen, P.R. China (ROR: https://ror.org/00cmhce21) (GRID: grid.453400.6) (ISNI: 0000 0000 8743 5787)
5 2nd Physics Institute, University of Stuttgart, Stuttgart, Germany (ROR: https://ror.org/04vnq7t77) (GRID: grid.5719.a) (ISNI: 0000 0004 1936 9713)
6 National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, P.R. China (ROR: https://ror.org/05htk5m33) (GRID: grid.67293.39); Greater Bay Area Institute for Innovation, Hunan University, Guangzhou, P.R. China (ROR: https://ror.org/05htk5m33) (GRID: grid.67293.39)