WO2019169569A1

WO2019169569A1 - Three-in-one co-extrusion molded pp diffusion plate

Info

Publication number: WO2019169569A1
Application number: PCT/CN2018/078207
Authority: WO
Inventors: 何勇
Original assignee: 重庆颖锋兴瑞光电科技有限公司
Priority date: 2018-03-07
Filing date: 2018-03-07
Publication date: 2019-09-12

Abstract

Disclosed is a three-in-one co-extrusion molded PP diffusion plate comprising a PP diffusion plate main body, a first PP diffusion layer and a second PP diffusion layer which are integrally formed by means of PP co-extrusion molding. The first PP diffusion layer is provided at an upper surface of the PP diffusion plate main body. The second PP diffusion layer is provided at a lower surface of the PP diffusion plate main body. Light diffusion particles are provided in each of the first PP diffusion layer and the second PP diffusion layer to enhance diffusion performance. The three-in-one integrated diffusion plate enables light to be refracted and transmitted several times. Moreover, the invention fully employs diffusion of light to increase light emission and diffusion performance, thereby increasing brightness.

Description

Three-in-one in-mold composite PP diffusion plate

Technical field

The invention relates to the technical field of optical plates, in particular to a three-in-mold in-mold composite PP diffusion plate.

Background technique

Today's research on diffusers is mainly in liquid crystal displays. In the liquid crystal display, the liquid crystal panel itself does not have a light-emitting function, and it is necessary to provide a light source by arranging a backlight module under the liquid crystal panel to realize a display function. Diffuser plate is a direct type LED The key part of the backlight module, its main function is to diffuse the point source or line source into a uniform surface source, and improve the utilization of light energy parallel to the direction of propagation of light, in order to improve the light extraction efficiency and the uniformity of light output. Achieve high quality display. With the increasingly fierce market competition, designing good backlight products is very important for manufacturers. In order to meet the required lighting requirements, the secondary light distribution lens applied to general illumination is usually a complex curved shape, which is difficult to process and costly. Therefore, the existing diffuser plate should be improved to solve the above problems.

Summary of the invention

In view of this, the present invention is directed to the absence of the prior art, and its main object is to provide a three-in-one in-mold composite PP diffusion plate, which achieves multiple refractions of light by using a three-in-one combination of the diffusion plates. , transmission, enhance the effect of homogenization; at the same time make full use of the diffusion of light, improve the overall effect of light emission and diffusion, increase the brightness; and strengthen the flexural strength of the diffuser , good stability.

In order to achieve the above object, the present invention adopts the following technical solutions:

A three-in-one in-mold composite PP diffusion plate comprises a PP diffusion plate body integrated with a PP material in-mold composite extrusion, a first PP diffusion layer and a second PP diffusion layer, wherein the first PP diffusion layer is disposed on The PP diffusion plate main body upper surface, the second PP diffusion layer is disposed on the lower surface of the PP diffusion plate main body, and the light diffusion particles capable of increasing the diffusion effect are respectively disposed in the first PP diffusion layer and the second PP diffusion layer.

The present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solution that by using a three-in-one combination method of the diffusion plate, light is incident on the diffusion plate, and the light is diffused. Increase the utilization of light, improve the overall emission and diffusion effect of light, increase the brightness, and enhance the bending strength of the diffuser The stability is good; the cost is reduced, and the product is more widely used.

DRAWINGS

1 is a schematic view showing a layered structure of a diffusion plate of the present invention.

Description of the figure:

10. PP diffusion plate main body 20, first PP diffusion layer

21. Light diffusing particles 30. Second PP diffusion layer

31. Light diffusing particles

Detailed ways

The present invention is shown in FIG. 1. A three-in-mold in-mold composite PP diffusion plate includes a PP diffusion plate main body 10, a first PP diffusion layer 20 disposed on the upper surface of the PP diffusion plate main body 10, and a PP diffusion plate. a second PP diffusion layer 30 on the lower surface of the body 10, wherein:

The PP diffusion plate main body 10, the first PP diffusion layer 20 and the second PP diffusion layer 30 are integrally extruded by in-mold, which is simpler, lower in cost and more efficient in production than the conventional diffusion plate. The PP diffusion plate main body 10 is made of polypropylene, and the first PP diffusion layer 20 and the second PP diffusion layer 30 are refracted light layers of the diffusion plate, and the first PP diffusion layer 20 and the second PP diffusion layer 30 are The material is polypropylene, and light diffusing particles 31 capable of increasing the diffusion effect are provided in the first PP diffusion layer 20 and the second PP diffusion layer 30, respectively.

The design of the present invention focuses on the use of light into the diffusing plate by using the three-in-one combination of the diffusing plate, utilizing the diffusion of light, increasing the utilization of light, improving the effect of emitting and diffusing light, and increasing the brightness. , enhanced the flexural strength of the diffuser The stability is good; the cost is reduced, and the product is more widely used.

The above is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are Still falling within the scope of the technical solution of the present invention.

Claims

A three-in-mold in-mold composite PP diffusion plate, comprising: a PP diffusion plate body integrated with a PP material in-mold composite extrusion, a first PP diffusion layer and a second PP diffusion layer, the first PP The diffusion layer is disposed on the upper surface of the PP diffusion plate body, the second PP diffusion layer is disposed on the lower surface of the PP diffusion plate body, and the light diffusion diffusion effect is increased in the first PP diffusion layer and the second PP diffusion layer, respectively. particle.