Guest-host liquid crystal devices have attracted significant attention in see-through display due to their ability to control the transmittance of light without sacrificing the resolution of image. However, such complicated systems limite their contributions in practical applications. Herein, we propose a novel guest-host liquid crystal device for transparent display, with the coexistence of parallel and helical assembled microstructure fabricated by patterned polymer template. By applying an electrical field or rotating the linear polarization of incident light, the dynamic multi-grayscale patterns have been achieved owing to the distinct responses of different regions. The experimental results indicate that, under the driving voltage, the transmittance of parallel microstructure regions increases from 3.28% to 63.22%, and meanwhile the contrast ratio between the two regions increases from 0.41 to 5.12. By changing the linear polarization of incidence, the transmittance of parallel region increases from 3.28% to 65.45%, and the contrast ratio also increases from 0.41 to 4.54. The proposed guest-host liquid crystal device is capable for patterned display in various scenarios due to its simple configuration and convenient tunability, thus making further advances offer more brilliant liquid crystal devices in diversified fields.