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Composite film, preparation method and application thereof and backlight module

A technology of composite film and quantum dot glue layer, which is applied in the direction of light guide, optics, optical components, etc., can solve the problems of multi-layer assembly of light loss, influence of luminous effect, and complicated operation process, so as to improve light scattering performance and reduce diaphragm Effect of scratching and improving the brightness of the light source

Pending Publication Date: 2020-04-10
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the multi-layer backlight material has the problem of light loss and the difficulty of multi-layer assembly in use
[0003] A general backlight module is composed of a backplane, a reflective film, a light guide plate, a diffusion film, an enhancement film, and LED lamp beads. About 40%, at the same time, the combination and installation process of multiple materials is complicated. Poor operation will damage the surface of the diaphragm and cause scratches, especially the scratches on the surface of the incremental film and diffusion film, which will have a greater impact on the luminous effect as significant

Method used

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  • Composite film, preparation method and application thereof and backlight module
  • Composite film, preparation method and application thereof and backlight module
  • Composite film, preparation method and application thereof and backlight module

Examples

Experimental program
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Effect test

preparation example Construction

[0044] The present invention also provides a kind of preparation method of composite membrane, comprises the following steps:

[0045] S101: forming a diffusion layer, or forming a reflection layer;

[0046] Existing methods can be used to prepare the diffusion layer and the reflective layer, which are not particularly limited here.

[0047] S102: forming a quantum dot glue layer on the diffusion layer, or forming a quantum dot glue layer on the reflective layer;

[0048] It is understandable that the diffusion layer can be formed first, the quantum dot layer can be formed on the diffusion layer, and then the reflective layer can be formed, or it can be reversed, the reflective layer can be formed first, the quantum dot layer can be formed on the reflective layer, and then the diffusion layer can be formed. layer, should be understood as within the protection scope of the present invention.

[0049] Further, step S102 includes the following steps:

[0050] S1021: dissolving...

Embodiment 1

[0065] The composite film structure of Example 1 is a reflection layer, a quantum dot adhesive layer and a diffusion layer stacked in sequence, and the preparation method is as follows:

[0066] (1) Provide a reflective base material with a thickness of 150 μm as a reflective layer (Ningning Longyang Technology Co., Ltd., DJX250);

[0067] (2) Form a quantum dot adhesive layer on the reflective layer, specifically: dissolve 1 part of cyanoacrylate adhesive and 0.1 part of cadmium disulfide in 50 parts of toluene solution, mix evenly, and form a coating cloth liquid. Apply it on the reflective layer by coating, and dry it in a drying oven at 110°C for 2 minutes.

[0068] (3) Using a 250 μm diffusion substrate as a diffusion layer, the above-mentioned quantum dot adhesive layer was composited with a 250 μm thick diffusion layer (Ningbo Longyang Science and Technology Co., Ltd., HD250D) and cooled to room temperature to obtain a high-brightness composite film.

Embodiment 2

[0070] It is basically the same as Example 1, except that the adhesive is 4 parts, and the quantum dot material is 0.2 parts, so that the composite film of Example 2 is obtained.

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Abstract

The invention relates to a composite film, a preparation method and application thereof and a backlight module. The composite film comprises a diffusion layer, a quantum dot adhesive layer and a reflection layer which are arranged in a stacked mode, wherein the quantum dot adhesive layer comprises a quantum dot material. The composite film can effectively avoid light source loss.

Description

technical field [0001] The invention relates to the technical field of electronic display, in particular to a composite film, a preparation method and application thereof, and a backlight module. Background technique [0002] The backlight module is an important part of the liquid crystal display panel (Liquid Crystal Display), and generally consists of a backlight source, a multi-layer backlight material and a supporting frame. The quality of the backlight determines important parameters such as the brightness of the LCD screen, the uniformity of emitted light, and the color scale, and largely determines the luminous effect of the LCD screen. Wherein the multi-layer backlight material has the problem of light loss and difficulty in multi-layer assembly during use. [0003] A general backlight module is composed of a backplane, a reflective film, a light guide plate, a diffusion film, an enhancement film, and LED lamp beads. About 40%, at the same time, the combination and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B6/00
CPCG02F1/1336G02F1/133615G02B6/0051G02B6/0055
Inventor 金亚东杨承翰刘正朱正平
Owner NINGBO CHANGYANG TECH
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