CN218497184U

CN218497184U - Light reflection film with diffusion function and mini LED backlight module

Info

Publication number: CN218497184U
Application number: CN202222000916.XU
Authority: CN
Inventors: 江玉兴; 胡榕建; 骆志锋
Original assignee: Shenzhen Tongxingda Technology Co Ltd
Current assignee: Shenzhen Tongxingda Technology Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-02-17
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a take light reflectance membrane and mini LED backlight unit of diffusion function, wherein take the light reflectance membrane of diffusion function to include: the light reflection film comprises a light reflection film body and a diffusion layer arranged on the light reflection film body, wherein the diffusion layer is provided with diffusion particles and/or the surface of the diffusion layer far away from the light reflection film body is provided with an optical microstructure. The beneficial effects of the utility model reside in that: the light reflection film body and the diffusion layer are compounded to form the light reflection film, so that the light reflection film has a diffusion function, one or two diffusion films can be reduced, the backlight assembly efficiency can be improved, the module cost is reduced, the corresponding equipment cost is reduced, and compared with the implementation mode of buying the diffusion sheet, the diffusion sheet is cheaper, and the cost is lower.

Description

Light reflection film with diffusion function and mini LED backlight module

Technical Field

The utility model relates to a mini LED display module technical field especially relates to a take light reflectance coating and mini LED backlight unit of diffusion function.

Background

Referring to fig. 1, the conventional mini LED backlight module mainly includes a frame stacked from top to bottom: the mini LED backlight module comprises an upper polarizing film, a lower polarizing film, a diffusion film, a QD film (quantum dot film), a light reflection film, a diffusion film and a mini LED lamp panel, wherein the light reflection film is also called as a BLT film, a blue film and the like, the light reflection film has the effects that blue light penetrates through the light reflection film, red light and green light cannot penetrate through the light reflection film and can only reflect the red light and the green light, and in the mini LED backlight module in the prior art, the number of various film materials is large, so that the problems that the cost of the module is high, the assembly process is complex and the like can be caused.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a take light reflectance membrane and mini LED backlight unit of diffusion function.

The technical scheme of the utility model as follows: the utility model provides a take light reflectance coating of diffusion function, include: the light reflection film comprises a light reflection film body and a diffusion layer arranged on the light reflection film body, wherein the diffusion layer is provided with diffusion particles and/or the surface of the diffusion layer far away from the light reflection film body is provided with an optical microstructure.

Further, the diffusion layer has diffusion particles, and a surface of the diffusion layer away from the light reflection film body is a plane.

Further, the optical microstructures are irregular stripes.

Further, the surface roughness RA of the optical microstructure is 0.6-0.8.

The utility model also provides a mini LED backlight unit, including foretell take the light reflex membrane of diffusion function.

Further, the mini LED backlight module further comprises: the light-emitting diode display panel comprises an upper polarizing film, a lower polarizing film, a QD film and a mini LED lamp panel, wherein the upper polarizing film, the lower polarizing film, the QD film, a light reflecting film and the mini LED lamp panel are arranged in a rubber frame in a laminated mode.

Adopt above-mentioned scheme, the beneficial effects of the utility model reside in that: the light reflection film body and the diffusion layer are compounded to form the light reflection film, so that the light reflection film has a diffusion function, one or two diffusion films can be reduced, the backlight assembly efficiency can be improved, the module cost is reduced, and the corresponding equipment cost is reduced; the diffusion degree can be conveniently and timely adjusted, the diffusion degree can be adjusted at one time, and the optical adjustment development time can be saved.

Drawings

Fig. 1 is a schematic structural diagram of a mini LED backlight module in the prior art.

Fig. 2 is a schematic view of a light reflective film according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a mini LED backlight module according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 2, in the present embodiment, the present invention provides a light reflection film with diffusion function, including: the light reflection film body 1 and the diffusion layer 2 disposed on the light reflection film body 1 may be the diffusion layer 2 disposed on the upper layer of the light reflection film body 1, or the diffusion layer 2 disposed on the lower layer of the light reflection film body 1, the diffusion layer 2 has diffusion particles, and the surface of the diffusion layer 2 away from the light reflection film body 1 has an optical microstructure 3.

Further, the optical microstructures 3 are irregular striped protrusions.

Further, the surface roughness RA of the optical microstructure 3 is 0.6 to 0.8.

It is noted that there are other alternative embodiments of the present invention, for example, in one implementation, compared to the first embodiment, the difference is that the surface of the diffusion layer away from the light reflection film body has no optical microstructure and is a flat plane. Alternatively, in another embodiment, compared to the first embodiment, there is a difference in that the diffusion layer does not have diffusion particles therein.

In the scheme, in the optical microstructures on the surface of the diffusion layer, the optical microstructures cannot be in a regular shape, interference fringes with an upper polarizing film, a lower polarizing film and the like of the backlight module are avoided, the surface of the optical microstructures cannot be too smooth, and a better diffusion effect is conveniently achieved. The scheme is characterized in that the diffusion layer is arranged on the light reflection film, so that the light reflection film becomes a composite film material and has a diffusion function, one or two layers of diffusion films in the prior art can be replaced, and the same optical effect is realized in the backlight module.

The utility model also provides a mini LED backlight unit, mini LED backlight unit ripples includes foretell take diffusion function's mini LED reflectance coating.

Specifically, referring to fig. 3, in the embodiment shown in fig. 3, the mini LED backlight module includes: the light source comprises an upper polarizing film, a lower polarizing film, a diffusion film, a QD film and a mini LED lamp panel, wherein the upper polarizing film, the lower polarizing film, the diffusion film, the QD film, a light reflection film and the mini LED lamp panel are arranged in a rubber frame in a laminated mode.

In this embodiment, the structure of the mini LED backlight module may be different in different embodiments, for example, in one embodiment, compared with the mini LED backlight module of the above embodiment, the difference is that there is no diffusion film between the lower polarization film and the QD film.

To sum up, the beneficial effects of the utility model reside in that: the light reflection film has a diffusion function, one or two diffusion films can be reduced, the backlight assembly efficiency can be improved, the module cost is reduced, and the corresponding equipment cost is reduced.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A light reflection film with a diffusion function, comprising: the light reflection film comprises a light reflection film body and a diffusion layer arranged on the light reflection film body, wherein the diffusion layer is provided with diffusion particles and/or the surface of the diffusion layer far away from the light reflection film body is provided with an optical microstructure.

2. The film according to claim 1, wherein the diffusion layer has diffusion particles, and a surface of the diffusion layer facing away from the light reflection film body is a flat surface.

3. The light reflection film with a diffusing function according to claim 1, wherein the optical microstructures are irregular stripes.

4. The light reflection film with a diffusion function according to claim 1, wherein the optical microstructure has a surface roughness RA of 0.6 to 0.8.

5. A mini LED backlight module, characterized by comprising the light reflective film with diffusion function of any claim 1 to 4.

6. The mini LED backlight module of claim 5, further comprising: the LED lamp panel comprises an upper polarizing film, a lower polarizing film, a QD film and a mini LED lamp panel, wherein the upper polarizing film, the lower polarizing film, the QD film, a light reflecting film and the mini LED lamp panel are arranged in a laminated mode.