High brightness enhancement film module

By setting reflective films and brightness enhancement films on both sides of the light guide plate, setting aluminum film layers and silver film layers inside the reflective film, and setting a prism structure on the brightness enhancement film, the problems of low light source utilization and easy oxidation of metal reflective films in the prior art are solved, achieving higher light utilization and better backlight effect.

CN224480586UActive Publication Date: 2026-07-10DONGGUAN GUANGZHI PHOTOELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN GUANGZHI PHOTOELECTRIC CO LTD
Filing Date
2025-08-21
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing brightness enhancement films suffer from low light source utilization, significant light loss, poor adhesion of metal reflective films, and easy oxidation, all of which affect the improvement of backlight performance.

Method used

The high-brightness enhancement film assembly includes a reflective film and a brightness enhancement film set on both sides of the light guide plate. The reflective film contains an aluminum film layer and a silver film layer, and the brightness enhancement film has a prism structure. The light concentration effect is enhanced through multiple reflections and refractions, and the adhesion and stability of the metal film layer are improved through a PET film layer and an adhesive layer.

Benefits of technology

It improves light utilization, reduces light loss, enhances the brightness of the brightening film, and achieves better backlighting effect.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224480586U_ABST
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Abstract

This utility model discloses a high-brightness enhancement module, including a reflective film and a brightness enhancement film disposed on both sides of a light guide plate. The reflective film includes a first PET film layer, an aluminum film layer, an adhesive layer, a protective coating, a silver film layer, a base coating layer, and a second PET film layer. The refractive index of the base coating layer is between 1.61 and 1.66. The brightness enhancement film includes a diffuser sheet, a first brightness enhancement film sheet, and a second brightness enhancement film sheet. This utility model uses a reflective film and a brightness enhancement film disposed on both sides of the light guide plate. An aluminum film layer and a silver film layer are disposed within the reflective film, and a PET film layer and an adhesive layer are disposed to enhance the adhesion and stability of the metal film layer. A base coating layer and a protective coating layer with appropriate refractive indices are disposed to refract the reflected light, allowing more light to be concentrated and enter the brightness enhancement film on the other side of the light guide plate, reducing light loss. By disposing of two brightness enhancement film sheets on the brightness enhancement film and setting the prism structure on them relatively tilted, the light passing through the two layers of staggered triangular prisms undergoes multiple reflections and refractions, thereby reducing light loss and enhancing the brightness of the brightness enhancement film assembly.
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