Liquid crystal composition and liquid crystal display device thereof

By adjusting the alignment layer direction and friction direction of the liquid crystal display device, the problem of excessive full width at half maximum (FWHM) of the reflection spectrum of the cholesteric liquid crystal display device was solved, resulting in more vivid reflected colors and higher purity, thus improving the color display effect.

CN119511587BActive Publication Date: 2026-03-24JIANGSU HECHENG DISPLAY TECH CO LTD
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Patent Information

Application Number
CN202311073374.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-24
Publication Date
2026-03-24
Estimated Expiration
2043-08-24

AI Technical Summary

Technical Problem

The large half-width of the reflection spectrum of existing cholesteric liquid crystal display devices results in dull reflected colors, which limits their application in color displays.

Method used

By adjusting the alignment direction and friction direction of the alignment layer of the liquid crystal display device, the full width at half maximum (FWHM) of the cholesteric liquid crystal composition layer is narrowed, thereby improving the vividness and purity of the reflected colors.

Benefits of technology

A narrower half-width at half-maximum (WHM) was achieved, resulting in more vibrant and pure reflected colors, thus improving the color display performance of cholesteric liquid crystal display devices.

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Abstract

The present application provides a liquid crystal display device, the liquid crystal display device comprises at least one display panel, the display panel comprises from top to bottom, first substrate, first conductive layer, first alignment layer, cholesteric liquid crystal composition layer, second alignment layer, second conductive layer and second substrate, wherein, the first alignment layer and the second alignment layer are perpendicular alignment, and the rubbing direction is up-down anti-parallel rubbing.The liquid crystal display device has narrower half-peak width under the condition of equivalent λmax, so that the reflected color is more bright and pure.
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