Method for preparing polarization volume holographic device and polarization volume holographic device
By forming a liquid crystal layer on the substrate and removing the photo-alignment layer, the problems of yellowing and blue-violet light absorption caused by the photo-alignment layer are solved, improving the optical performance of polarizing holographic devices and making them suitable for optical waveguides in augmented reality near-eye display devices.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ZHUHAI MOJIE TECH CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-09
AI Technical Summary
In existing technologies, the optical alignment layer is composed of azo dyes, which causes yellowing and blue-violet light absorption problems in polarizing holographic devices during the fabrication process, affecting optical performance.
A liquid crystal layer is formed by coating a photoalignment layer on a substrate and performing polarization exposure treatment. Then, the substrate and photoalignment layer are removed. The photoalignment layer is removed by mechanical grinding or chemical mechanical polishing to ensure that the alignment of the liquid crystal layer is not affected.
It effectively reduces the yellowing and blue-violet light absorption problems of polarized holographic devices, improves optical performance, and is suitable as a diffraction microstructure for coupling and coupling light rays in the optical waveguide of augmented reality near-eye display devices.
Smart Images
Figure CN2025103111_09072026_PF_FP_ABST