CN105334555A - Novel high-fog high-brightness diffusion plate - Google Patents

Abstract

The present invention discloses a novel high-fog and high-brightness diffusion plate, comprising a diffusion plate layer, an adhesive layer, and a diffusion film layer, wherein the diffusion film layer is attached to the diffusion plate layer through the adhesive layer. The diffusion plate of the present invention further reduces the cost, and the novel diffusion plate with the diffusion film attached to the diffusion plate satisfies the functions of the diffusion film and the diffusion plate at the same time, thereby achieving the purpose of atomizing lamp shadows, improving brightness, and reducing costs (material costs and manual assembly costs).

Description

A new type of high-fog and high-brightness diffuser

technical field

The invention relates to a novel high-fog and high-brightness diffusion plate.

Background technique

The diffusion plate is an important part of the direct-lit DLED backlight module. Its function is to concentrate the light emitted by the LB from a small angle to the front, improve the brightness, and at the same time atomize the light shadow effect. With the development of the industry, the requirements for subjective picture, brightness and low cost are getting higher and higher, which puts forward higher requirements for optical film materials. At present, DLED applications use a diffusion film plus a diffusion plate to meet the subjective, brightness and low-cost requirements.

Contents of the invention

In order to solve the above problems, the present invention provides a novel high-fog and high-brightness diffuser plate.

The technical solution adopted by the present invention to solve its technical problems is:

A novel high-fog and high-brightness diffuser plate comprises a diffuser plate layer, an adhesive layer, and a diffuser film layer. The diffuser film layer is attached to the diffuser plate layer through the adhesive layer.

The adhesive layer is UV glue.

The diffusion plate layer has a light incident surface and a light exit surface oppositely arranged; wherein, the light incident surface has a plurality of incident areas vertically opposite to the light source, and the incident areas have a plurality of first concave points and/or a plurality of a first convex point; the light exit surface has a plurality of second concave points and/or a plurality of second convex points; the opening area of the first concave point and the second concave point is π·(D/ 2) 2; the bottom surface area of the first bump and the second bump is π·(D/2) 2 ; π is the circumference ratio, and the value of D is 5-300 μm.

The diffusion plate layer includes a main plate layer and a thermoplastic resin layer; the thermoplastic resin layer is attached to the upper surface and/or lower surface of the main plate layer; the material of the main plate layer is PS; the material of the thermoplastic resin layer is PMMA, PO, PP One of , PE and MS; optical masterbatch is also infiltrated in the main body layer and thermoplastic resin layer.

The beneficial effects of the present invention are: the diffusion plate of the present invention further reduces the cost, and the diffusion film is bonded to the diffusion plate by a new type of diffusion plate, which satisfies the functions of the diffusion film and the diffusion plate at the same time, achieves atomized lamp shadows, improves brightness, and reduces costs ( material cost and labor assembly cost).

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

Fig. 1 is a schematic cross-sectional view of the present invention.

detailed description

Referring to Fig. 1, it is a novel high-fog high-brightness diffuser plate of the present invention, comprising a diffuser plate layer 10, an adhesive layer 20, and a diffuser film layer 30, and the diffuser film layer 10 is attached to the diffuser plate through the adhesive layer 20. On the diffuser layer 30, the adhesive layer 20 is preferably UV glue.

Specifically, the diffusion plate layer includes: a diffuser plate main body; the diffuser plate has a light incident surface and a light output surface oppositely arranged; wherein, the light incident surface has a plurality of incident areas vertically opposite to the light source, and there are multiple incident areas on the incident area. A concave point and/or a plurality of first convex points; a plurality of second concave points and/or a plurality of second convex points on the light-emitting surface; the opening area of the first concave point and the second concave point is π·(D /2)2; the bottom surface area of the first bump and the second bump is π·(D/2)2; π is the circumference ratio, and the value of D is 5-300 μm.

It should be noted that, first, the main body of the diffuser plate can be made of polystyrene (PS), polycarbonate (PC), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyterephthalene It is composed of light-transmitting polymeric or synthetic materials such as ethylene glycol formate (PET), acrylic (PMMA), acrylic (MMA), etc.

Wherein, diffusing particles (such as resin or acrylic balls) can be further dispersed in the main body of the diffusing plate, so as to further improve the reflectivity of light incident into the main body of the diffusing plate.

Preferably, the diffuser plate includes: a main body layer and a thermoplastic resin layer; the thermoplastic resin layer is attached to the upper surface and/or lower surface of the main body layer; the material of the main body layer is PS; the material of the thermoplastic resin layer is PMMA, PO, One of PP, PE and MS; optical masterbatch is also infiltrated in the main layer and thermoplastic resin layer. Wherein, the main board layer and the thermoplastic resin layer are extruded to form an integrated structure.

As a preferred solution, the outer surface of the thermoplastic resin layer is also distributed with insect pattern optical lines; the density of the main board layer is 1.04-1.06 g/cm3; the density of the thermoplastic resin layer is 0.92-0.95 g/cm3. More preferably, the body ply has a density of 1.05 g/cm3 and the thermoplastic resin layer has a density of 0.93 g/cm3.

After the light source passes through the optical masterbatch containing the diffusing agent, it is evenly dispersed, and then secondarily dispersed after passing through the thermoplastic resin layer. Therefore, the light transmittance of the diffuser plate of the present invention is well improved. The worm pattern has the advantage of being scratch-resistant, more resistant to foreign matter than the frosted pattern, and easy to clean.

The above-mentioned embodiments are only preferred versions of the present invention, and the present invention also has other embodiments. Those skilled in the art can also make equivalent modifications or replacements without departing from the spirit of the present invention, and these equivalent modifications or replacements are all included within the scope set by the claims of the present application.

Claims (4)

1. a novel high fog high briliancy diffuser plate, is characterized in that: comprise diffusion flaggy, bonding coat, Diffusion barrier layer, and this Diffusion barrier layer is attached on diffusion flaggy by bonding coat.

2. a kind of novel high fog high briliancy diffuser plate as claimed in claim 1, is characterized in that: described bonding coat is UV glue.

3. a kind of novel high fog high briliancy diffuser plate as claimed in claim 1, is characterized in that: described diffusion flaggy has the incidence surface and exiting surface that are oppositely arranged; Wherein, described incidence surface has multiple incident area vertically opposite with light source, described incident area has multiple first concave point and/or multiple first salient point; Described exiting surface have multiple second concave point and/or multiple second salient point; The aperture area of described first concave point and described second concave point is π (D/2) 2; The base area of described first salient point and described second salient point is π (D/2) 2; π is circular constant, and D value is 5 ~ 300 μm.

4. a kind of novel high fog high briliancy diffuser plate as claimed in claim 1 or 2, is characterized in that: described diffusion flaggy comprises main body flaggy and thermoplastic resin; Thermoplastic resin is attached to upper surface and/or the lower surface of main body flaggy; The material of main body flaggy is PS; The material of thermoplastic resin is the one in PMMA, PO, PP, PE and MS; In main body flaggy and thermoplastic resin, also infiltration has optics master batch.