Composite film and manufacturing method thereof

By using a composite film in the backlight module and using the combination of a reflective brightness and viewing angle to improve, the problems of limited viewing angle and complex production in the prior art are solved, and the display effect and production efficiency are improved.

CN119689748APending Publication Date: 2025-03-25JIANGSU HONOPTICAL MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202510073400.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-17
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

While the existing backlight module design improves brightness, the viewing angle range is limited and the production process is complex, resulting in low production efficiency and reduced process yield.

Method used

A composite film is adopted, including a reflective brightness enhancement film layer and a prism layer. By designing the first prism groove and the second prism groove in the prism layer and arranging it in different directions, two-way refraction is achieved; at the same time, the high reflectivity of the reflective brightness enhancement film layer and the light scattering effect of the matte layer are used to improve brightness and brightness uniformity.

Benefits of technology

The viewing angle range is expanded, the brightness uniformity and visual experience of the display screen are improved, while simplifying the production process and improving production efficiency and process yield.

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Abstract

The invention relates to a composite film and a manufacturing method thereof, and relates to the field of display technology, the composite film comprises a reflective brightness enhancement film layer and a prism layer, and the brightness enhancement film layer and the prism layer are connected through a fitting glue layer; the prism layer is provided with a plurality of first prism grooves and a plurality of second prism grooves, the plurality of first prism grooves and the plurality of second prism grooves are respectively arranged along a first direction and a second direction, and a plurality of prism structures are formed between the plurality of first prism grooves and the plurality of second prism grooves. The first prism groove and the second prism groove are designed in the prism layer and arranged in the first direction and the second direction respectively, light can be bidirectionally refracted, the viewing angle range is expanded, and the visual experience is improved; the reflection type brightness enhancement film layer has high reflectivity, light rays emitted by the light source can be reflected back to an optical system, light ray scattering and energy loss are reduced, the light rays can be concentrated, and therefore brightness is improved, and high brightness gain is achieved.
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