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Light diffusion plate and preparation method and purpose thereof

A light diffusion plate and light diffusion technology, applied in optics, optical components, instruments, etc., can solve the problems of high price, increased thickness, and significant cost of the light diffusion film, and achieve the improvement of haze and luminance, and increase the luminance , The effect of reducing the thickness of the module

Inactive Publication Date: 2017-11-17
涌奇材料技术(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Adding this layer of light-diffusing film on the basis of the existing light-diffusing plate can indeed increase the haze and luminance, making the screen more vivid and brighter, and the visual effect is better, but the light-diffusing film is expensive, and the cost is significantly increased. Adding this After layering light diffusion film, the thickness of the whole module is increased, which is contrary to the current trend of pursuing ultra-thin

Method used

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  • Light diffusion plate and preparation method and purpose thereof
  • Light diffusion plate and preparation method and purpose thereof
  • Light diffusion plate and preparation method and purpose thereof

Examples

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preparation example Construction

[0073] A method for preparing a light diffusion plate as described above, comprising the following steps:

[0074] 1) Preparation of light diffusing substrate;

[0075] 2) preparation of light diffusion coating;

[0076] 3) coating the light-diffusing coating on one or both sides of the light-diffusing substrate;

[0077] 4) Curing.

[0078] Preferably, the preparation of the light-diffusing substrate in step 1) includes adding light-diffusing particles into a molten transparent substrate material to make a light-diffusing plate.

[0079] Preferably, step 2) includes adding the light-diffusing particles into the binder resin and the diluent and mixing uniformly to prepare the light-diffusing coating.

[0080] Preferably, step 3) before coating the light-diffusing coating on one or both sides of the light-diffusing substrate, the surface of the light-diffusing substrate is treated with corona or plasma before coating. Surface corona or plasma treatment is performed to enhan...

Embodiment 1

[0083] This embodiment discloses a light-diffusing substrate. The transparent substrate 100 in the light-diffusing substrate is a transparent PET substrate with a thickness of 1.50 mm. Organic light-diffusing particles are added to the molten PET material to make the light-diffusing substrate; A light-diffusing coating is provided on one or both surfaces of the diffusing substrate. The organic light-diffusing particles added inside the light-diffusing substrate are PMMA with an average particle diameter of 2 μm.

[0084] The binder resin in the light-diffusing coating is polyurethane, and the light-diffusing particles in the coating include organic large light-diffusing particles, organic small light-diffusing particles and inorganic light-diffusing particles. The organic light-diffusing particles are PMMA, and the inorganic light-diffusing particles are titanium dioxide. Among them, the particle size of the organic large light-diffusing particles is 10-13 μm, the maximum par...

Embodiment 2

[0089] This embodiment discloses a light-diffusing substrate, the transparent substrate 100 in the light-diffusing substrate is a transparent PMMA substrate with a thickness of 1.50 mm, and organic light-diffusing particles polysiloxane are added to the molten PMMA material to make light-diffusing Substrate; a light-diffusing coating is provided on one or both surfaces of the light-diffusing substrate. The polysiloxane light-diffusing particles added in the light-diffusing substrate have an average particle diameter of 2 μm.

[0090] The binder resin in the light diffusion coating is polyurethane, and the light diffusion particles in the light diffusion coating include organic large light diffusion particles, organic small light diffusion particles and inorganic light diffusion particles. The organic large light-diffusing particle is PMMA; the organic small light-diffusing particle is polysiloxane, and the inorganic light-diffusing particle is titanium dioxide. The average pa...

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Abstract

The invention provides a light diffusion plate. The light diffusion plate comprises a light diffusion substrate and a light diffusion coating, one surface or two surfaces of the light diffusion substrate is / are coated by the light diffusion coating, and the light diffusion coating comprises bonding resin and light diffusion particles embedded in the bonding resin. According to the technical scheme of the light diffusion plate, the haze and the brightness of the finally obtained product are simultaneously improved, the optical effects of high haze and high brightness, which can be achieved by superposition of the light diffusion plate and a light diffusion film in the prior art, can be achieved, the module thickness is reduced, and the cost is substantially reduced.

Description

technical field [0001] The invention relates to the field of light diffusion plates, in particular to a novel light diffusion plate with high haze and high brightness. Background technique [0002] Display devices are widely used in mass consumer products such as notebook computers, mobile phones, and televisions. High-quality display devices need to display pictures clearly, but also ensure that the images are not distorted and the colors are bright. As a key part of the display device, the backlight source plays a key role in the above performance. [0003] The backlight in the display device is composed of a light source, a light guide plate, a reflective film, a diffusion plate, a diffusion film, and a light enhancement film. The light diffusion plate (such as figure 1 (shown) is to add light diffusing particles 3 into a thick transparent plastic substrate 1 with a thickness of 0.5-1.5mm and distribute them evenly. When the interface between plastic and light-diffusin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02
CPCG02B5/0226G02B5/0268
Inventor 姜文
Owner 涌奇材料技术(上海)有限公司
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