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Light splitting film and preparation method and system thereof

A technology for preparing a system and spectroscopic film, which is applied in the field of spectroscopic film, can solve the problems of increasing the overall thickness of the structure, uneven light distribution, and undesirable bright spots, etc., and achieve the effect of improving uniformity and luminance, improving shading, and easy thickness

Pending Publication Date: 2022-04-12
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing light guide plate is used, due to the point light source characteristics of the LED, when the LED light is incident on the surface of the light guide plate, it is easy to cause a hot spot phenomenon (hotpot) that guides the light to the light-emitting surface of the optical film, causing the light to spread unevenly. and cause undesired bright spots
In addition, in the prior art, the light guide plate and the diffusion film are usually used in combination, but this will increase the overall thickness of the structure, which is not conducive to consumers' demand for thinner products

Method used

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  • Light splitting film and preparation method and system thereof
  • Light splitting film and preparation method and system thereof
  • Light splitting film and preparation method and system thereof

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Experimental program
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Effect test

Embodiment 1

[0053] The present invention provides a spectroscopic film 1, such as figure 1 shown, including:

[0054] PSA layer 2;

[0055] And the raised microstructure layer 3 attached to the PSA layer 2;

[0056] The protrusions of the raised microstructure layer 3 are far away from the PSA layer;

[0057] The raised microstructure layer 3 is a hollow structure.

[0058] The raised microstructure layer 3 is Microlens, triangular pyramid, quadrangular pyramid or prism ( figure 1 The raised microstructure layer 3 only shows the Microlens structure, and it should be understood that the structure is not limited to any one of these).

[0059] The PSA layer contains particles inside, and the particle diameter of the particles is 5-8 μm.

[0060] The PSA layer 2 is the light incident surface, and the raised microstructure layer 3 is the light exit surface.

[0061] The light-splitting film 1 provided by the present invention can be better applied in the scene of a small-sized display de...

Embodiment 2

[0071] Such as image 3 As shown, the present invention also provides a method for preparing the above-mentioned spectroscopic film 1, comprising:

[0072] S1, coating UV glue on the second release layer 4;

[0073] S2, embossing the UV glue into a raised microstructure layer 3, the raised microstructure layer 3 is a hollow structure, and the protrusions of the raised microstructure layer 3 are close to the second release layer 4;

[0074] S3. Coating PSA glue containing particles on the first release layer 5, and drying the PSA glue coated with particles to form the PSA layer 2;

[0075] S4, bonding the raised microstructure layer 3 and the PSA layer 2 to form a bonding film;

[0076] The bonding process is as follows: spray the bonding glue onto the PSA layer 2, and bond the PSA layer 2 to the raised microstructure layer 3 while spraying the bonding glue to form a bonding process. membrane;

[0077] S5. Curing the bonding film to form the spectroscopic film.

[0078] Th...

Embodiment 3

[0085] Such as Figure 4 As shown, the present invention also provides a preparation system for the above-mentioned spectroscopic film 1, including:

[0086] Embossing module 11, oven 12, bonding device 13;

[0087] The embossing module 11 is used for embossing the raised microstructure layer 3;

[0088] The imprinting module may include: a working table (not shown in the figure), and an embossing mold 111 for protruding microstructures.

[0089] The workbench is used to place the second release layer 4 coated with UV glue to be embossed;

[0090] The embossed microstructure imprinting mold 111 is as Figure 5 As shown (the raised microstructure only shows the Microlens structure in the figure, it can be understood that the raised microstructure is not limited thereto), the raised microstructure imprint mold 111 is placed above the workbench , for embossing the UV glue to form the raised microstructure layer 3 .

[0091] The oven 12 is used to dry the PSA glue containing ...

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Abstract

The invention provides a light splitting film and a preparation method and system thereof, the light splitting film is suitable for a display device, the light splitting film comprises a PSA layer and a protruding microstructure layer attached to the PSA layer, protrusions in the protruding microstructure layer are away from the PSA layer, the protruding microstructure layer is of a hollow structure, and particles are contained in the PSA layer; light enters the light splitting film through the PSA layer in the light splitting film and then is emitted out through the protruding microstructure layer, after the light enters the PSA layer, particles in the PSA layer conduct reflection and diffuse reflection on a light source, incident light is distributed uniformly, after the incident light passes through the protruding microstructure layer, the light can be converted into collimated and more uniform light, and meanwhile due to the fact that the protruding microstructure layer is of a hollow structure, the light splitting film is more uniform in light splitting. The uniformity and brightness of incident light can be further improved, the shielding performance of LED lamp beads is improved, and the effect of replacing LGP and diffusion films can be achieved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a spectroscopic film, a preparation method and a system thereof. Background technique [0002] In the small-sized display screens such as mobile phones and IPADs, the light source is a direct-lit Mini-LED lamp bead to emit light. In the backlight module, it is usually necessary to use a light guide plate to diverge the point light source into a surface light source, and then use a diffusion film to evenly diffuse the light source. . However, when the existing light guide plate is used, due to the point light source characteristics of the LED, when the LED light is incident on the surface of the light guide plate, it is easy to cause a hot spot phenomenon (hotpot) that guides the light to the light-emitting surface of the optical film, causing the light to spread unevenly. And cause undesired bright spots. Moreover, in the prior art, the light guide plate and the diffusion film...

Claims

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Application Information

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IPC IPC(8): G02B5/02
Inventor 刘学锋金英镇金星南沈巍
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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