Composite optical film sheet for high-brightness small-size backlight module

By integrating a diffusion layer and a prism layer into the backlight module and optimizing the structure and fabrication process, the problems of light loss and increased thickness were solved, resulting in a high-brightness, thin, and reliable composite optical film suitable for high-brightness, small-size backlight modules.

CN224328254UActive Publication Date: 2026-06-05JIANGSU SHUANGXING COLOR PLASTIC NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU SHUANGXING COLOR PLASTIC NEW MATERIALS
Filing Date
2025-08-29
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In the existing technology, the separate use of diffusion film and prism film in backlight module leads to large light loss, increased thickness, complicated assembly and easy error, especially in small size, narrow bezel module.

Method used

By integrating the diffusion layer and prism layer onto a single composite optical film, and optimizing the structure and fabrication process, including specific adhesive layer thickness and prism structure design, efficient light convergence and reduced light loss are achieved. UV microforming technology is used to ensure bonding strength and reliability.

Benefits of technology

It achieves integration and thinning of the backlight module, improves brightness and light efficiency, simplifies the assembly process, and ensures high reliability and optical performance, making it particularly suitable for high-brightness, small-size backlight modules.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of composite optical film for high-brightness small-size backlight module, it is characterized in that, from front to back, it includes: diffusion layer, first adhesive layer, first prism layer, second adhesive layer, second prism layer and back coating layer;The second prism layer is arranged on the front of optical grade PET substrate, and the back coating layer is arranged on the back of the optical grade PET substrate.The utility model integrates the function of traditional three film pieces (lower diffusion film+lower brightness enhancement film+upper brightness enhancement film) on a composite film piece, significantly reduces the overall thickness of backlight module, and simplifies assembly process.
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