In order to achieve a natural and comfortable augmented reality display, it is necessary to solve the accommodation-vergence conflict problem in the conventional augmented reality displays. Multi-plane display realizes 3D display by constructing 2D slice pictures in space. Since each slice picture is displayed at a different depth, it can accurately display the depth information and effectively alleviate the accommodation-vergence conflict problem. This paper mainly introduces multi-plane augmented reality displays based on liquid crystal scattering devices, including normal-mode polymer stabilized liquid crystal (PSLC), reverse-mode PSLC and polymer stabilized cholesteric liquid crystal. The response time of the PSLC can reach 0.65 ms, and the response time of the polymer stabilized cholesteric liquid crystal is also within 3 ms, so multi-plane augmented reality displays can be realized based on time multiplexing method. Finally, the difficulties and future trends of multi-plane augmented reality displays based on liquid crystal scattering films are discussed.