Wide viewing angle optical film for liquid crystal display

By employing a combined structure of a PET substrate layer, a prism structure layer, a diffusion film layer, and a surface protective layer in the liquid crystal display, and combining diffusion particles of different sizes with prism unit design, the problem of uneven viewing angle and brightness in the wide-viewing-angle optical film of the liquid crystal display is solved, achieving a wider viewing angle and higher brightness display effect.

CN224594864UActive Publication Date: 2026-08-04DONGGUAN XUANLANG IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN XUANLANG IND CO LTD
Filing Date
2025-11-30
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Existing wide-viewing-angle optical films for LCD screens struggle to balance viewing angle and brightness, resulting in significant brightness decay and a narrow viewing angle range at medium to large viewing angles, and also easily causing a decrease in light transmittance and a reduction in screen contrast.

Method used

It adopts a combined structure of PET substrate layer, prism structure layer, diffusion film layer and surface protective layer, combined with diffusion particles of different sizes and prism unit design, and achieves multi-scale scattering and direction control of light by combining optical adhesive layer with backlight.

Benefits of technology

It improves the wide viewing angle display effect of the LCD screen, ensures uniform brightness distribution within the viewing angle area, reduces artifacts, and enhances the stability and clarity of the display effect.

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Abstract

The utility model discloses a wide viewing angle optical film for liquid crystal display, including PET base material layer, prism structure layer, diffusion film layer, surface protection layer and optical adhesive layer, the prism structure layer is located PET base material layer's upper surface, diffusion film layer is located the upper surface of prism structure layer, surface protection layer is located diffusion film layer's upper surface, and optical adhesive layer sets up in the lower surface of PET base material layer, diffusion film layer is dispersed with a plurality of first diffusion particles and second diffusion particles of different particle size in, first diffusion particle and second diffusion particle are staggered interval arrangement and set up, the prism structure layer is by the prism unit of array arrangement constitutes. The utility model discloses by setting prism structure layer and diffusion film layer with double particle size particle in order on PET base material layer, thereby realizes the direction control and multi -scale scattering of back light light, makes light even emission in wider viewing angle range, and effectively promotes the brightness distribution uniformity and display effect of optical film.
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