Polaroid optical lifting method based on multiband dichroic dye

Through the mixing system and optimization process of styrene-type and indole-type dyes, the problem of large differences in polarization in multi-band polarization is solved, the uniformity of polarization and transmittance is achieved, and the color reduction ability and optical performance of the display device are improved.

CN120352969APending Publication Date: 2025-07-22NANJING HAN FLAG NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202510620788.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-14
Publication Date
2025-07-22

AI Technical Summary

Technical Problem

Traditional polarizers have large differences in polarization degrees in the multi-band range, resulting in uneven color shifts and brightness, making it difficult to meet the multi-band polarization characteristics requirements of modern display devices.

Method used

The mixing system of styrene and indole dyes is adopted, and the mixing ratio is reasonably adjusted between 1:1 and 1:3, combined with multi-layer composite dye structure, plasma etching technology, spin coating method and ultraviolet curing technology, the preparation process of the polarizer is optimized to ensure the uniformity of polarization and transmittance.

Benefits of technology

Effectively control the difference in polarization degree between blue and red light bands within 2%, improving the color reduction capability and optical performance stability of multi-color display systems, and is suitable for high dynamic range display and multi-spectral imaging equipment.

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Abstract

The invention relates to the technical field of polarizers, in particular to a multi-band dichroism dye-based polarizer optical improvement method, which effectively solves the problem of large polarization degree difference of a traditional polarizer in a multi-band range by adopting a mixed system of stilbene and indole dyes. By reasonably adjusting the mixing ratio of the dichroic dye to be between 1: 1 and 1: 3, the polarization degree difference of the blue light band and the red light band is successfully controlled within 2%, the improvement not only improves the color rendition capability of the multicolor display system, but also effectively reduces color cast and uneven brightness caused by the polarization characteristic difference of different bands, and in addition, the color rendering effect of the multicolor display system is improved. Due to the design of the multi-layer composite dye structure, dye absorption peaks of all the layers are complementary, the multi-band optical performance is greatly improved, and particularly, the dye is excellent in high dynamic range display (HDR) and multi-spectral imaging equipment.
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