Highly transparent privacy film and display device

Abstract

The utility model provides a kind of high-transmittance privacy film and display device, it includes first substrate layer and privacy layer, the privacy layer is set on the upper surface of the first substrate layer;The privacy layer includes transmission area and non-transmission area that are alternately arranged along first direction by preset distance;The high-transmittance privacy film further includes microstructure layer, the microstructure layer is set on the side of the first substrate layer away from the privacy layer;The microstructure layer is wavy structure, the wavy structure is convex wavy shape and concave wavy shape alternately arranged along first direction by preset distance and is formed.The utility model can make light that passes through convex wavy shape and concave wavy shape structure deflect by setting convex wavy shape and concave wavy shape structure in privacy film, and then make the light entering transmission area increase, enhance the transmittance of privacy film, improve display brightness.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a high-transparency privacy film and display device. Background Technology

[0002] Privacy screen protectors are widely used in display devices, such as mobile phones and computer screens, to prevent peeping from the side. Existing privacy screen protectors typically achieve their effect from both left and right angles through reflective microstructures. However, these existing products are not ideal in terms of display brightness, often sacrificing brightness for privacy protection. Specifically, the structural design of existing privacy screen protectors results in low light transmittance and poor light scattering, thus affecting the user experience. Therefore, a new type of privacy optical film is needed that can improve display brightness while maintaining privacy performance. Utility Model Content

[0003] The purpose of this invention is to provide a high-transparency privacy film that solves the problems of insufficient transmittance and low brightness in existing privacy films.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A high-transparency privacy film includes a first substrate layer and a privacy layer, wherein the privacy layer is disposed on the upper surface of the first substrate layer; the privacy layer includes transmissive areas and non-transmissive areas arranged alternately at a preset distance along a first direction.

[0006] It also includes a microstructure layer, which is disposed on the side of the first substrate layer away from the privacy shield;

[0007] The microstructure layer is a wave-shaped structure, which is composed of alternating convex and concave wave shapes along a first direction at a preset distance.

[0008] Furthermore, the concave wavy shape is configured corresponding to the non-transmissive area.

[0009] Furthermore, the height of the convex and concave wavy shapes is 20-50 μm.

[0010] Furthermore, the apex angle of the convex wave shape has an arc of 50-70 degrees.

[0011] Furthermore, the width of the transmissive region structure is 22-28 μm above the structure and 24.67-32.67 μm below the structure; the width of the non-transmissive region structure is 4.5-10.5 μm above the structure and 2-5 μm below the structure.

[0012] Furthermore, the pitch of the transmission region is 28.5-38 μm.

[0013] Furthermore, the upper width ratio of the transmissive region to the non-transmissive region is 4:1-6:1, and the lower width ratio is 12:1-17:1.

[0014] This utility model also provides a display device, including the high-transparency privacy film as described above.

[0015] The high-transmittance privacy film provided by this utility model can deflect light passing through the convex and concave wavy structures by setting convex and concave wavy structures in the privacy film, thereby increasing the amount of light entering the transmission area, increasing the transmittance of the privacy film, and improving the display brightness. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below.

[0017] Figure 1 This is a schematic diagram of the high-transparency privacy film structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the wave-shaped structure of this utility model.

[0019] In the figure: 1. First substrate layer; 2. Privacy shield; 21. Transmissive area; 22. Non-transmissive area; 3. Microstructure layer; 31. Convex wavy shape; 32. Concave wavy shape; 4. Second substrate layer. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0021] This application provides a high-transparency privacy film. For example... Figure 1 As shown, the high-transparency privacy film includes: a first substrate layer 1; the first substrate layer 1 is an optically transparent material, including but not limited to PET, PVC, EVA, PC, PMMA, TPU, glass, etc., and in this invention, the first substrate layer 1 is preferably made of PET. The first substrate layer 1 provides fixation and support for other structural layers.

[0022] The high-transparency privacy film also includes a privacy layer 2, which is disposed on the upper surface of the first substrate layer 1. The privacy layer 2 includes a transmissive area 21 and a non-transmissive area 22 arranged alternately at a preset distance along a first direction.

[0023] The transmissive region 21 is a white adhesive layer, and the non-transmissive region 22 is a black adhesive layer.

[0024] The transmissive area 21 and the non-transmissive area 22 are in the form of isosceles trapezoids, rectangles, or other structures.

[0025] The venetian blind structure composed of the aforementioned transmissive area 21 and non-transmissive area 22 allows the privacy film to provide a privacy effect for the display screen, but it also reduces the brightness of the display screen.

[0026] To improve display brightness, the width of the transmissive area 21 of this invention is greater than the width of the non-transmissive area 22.

[0027] Furthermore, in order to improve the display brightness of the privacy screen protector, this invention also provides a microstructure layer 3, which is disposed on the side of the first substrate layer 1 away from the privacy screen protector 2.

[0028] The microstructure layer 3 is a wave-shaped structure, which is composed of an upwardly convex wave 31 and a downwardly concave wave 32 arranged alternately along the first direction at a preset distance.

[0029] The first direction is the X-axis direction.

[0030] like Figure 2 As shown, the microstructure layer 3 is disposed on the light-incident surface. After the light source passes through the microstructure layer 3, the light rays passing through the convex wave 31 will be scattered at a small angle. Because the scattering angle is small, most of the light rays scattered by the convex wave 31 will enter the transmission area 21. The light rays passing through the convex wave 31 are more uniform, and after entering the transmission area 21 of the privacy layer, they are converged, improving the uniformity and brightness of the display.

[0031] After the light source passes through the microstructure layer 3, the light entering the concave wave shape 32 will be deflected at an angle. After the angle is deflected, some of the light will enter the transmission area 21, which will lead to an increase in the amount of light entering the transmission area 21.

[0032] Furthermore, to increase the amount of light entering the transmission zone 21, the concave wavy shape 32 is correspondingly arranged to the non-transmissive zone 22; the transmission zone 21 can correspond to either the convex wavy shape 31 or the concave wavy shape 32. With the concave wavy shape 32 corresponding to the non-transmissive zone 22, light passing through the non-transmissive zone 22 first enters the concave wavy shape 32, and then enters the transmission zone 21 after being deflected by the concave wavy shape 32, thus increasing the amount of light entering the transmission zone 21 and thereby improving the light transmittance of the display screen.

[0033] After the light source enters the privacy layer 2 through the microstructure layer 3, the light entering the transmission area 21 is increased and the light is more uniform due to the action of the convex wave 31 and the concave wave 32, which in turn increases the light transmittance of the display screen and enhances the brightness of the display screen.

[0034] The microstructure layer 3 is disposed on the second substrate layer 4. The second substrate layer 4 is a transparent optical material, preferably PET or PC.

[0035] The microstructure layer 3 is formed by coating a second substrate layer 4 with UV adhesive and then pressing it with a mold.

[0036] The height of the convex wave shape 31 and the concave wave shape 32 is 20-50 μm. Within this height range, the wave shape ensures that more incident light enters the transmission zone 21, thus improving the product transmittance.

[0037] The apex angle of the convex wave shape 31 is 50-70 degrees. This apex angle arc of the convex wave shape 31 allows incoming light to be scattered at a smaller angle, ensuring that more light enters the transmission zone 21.

[0038] To ensure the transmittance of the privacy product without affecting its privacy protection effect, the width of the transmission area 21 in this invention is 22-28 μm on the top and 24.67-32.67 μm on the bottom.

[0039] The non-transmissive region 22 has a width of 4.5-10.5 μm on the upper part of the structure and a width of 2-5 μm on the lower part of the structure.

[0040] The pitch of the transmission zone 21 is 28.5-38 μm.

[0041] The height of the transmissive region 21 and the non-transmissive region 22 is 62-78 μm.

[0042] Furthermore, in order to improve the display brightness of the privacy film, the upper width ratio of the transmissive area 21 and the non-transmissive area 22 of the privacy layer 2 in this invention is between 4:1 and 6:1, and the lower width ratio is between 12:1 and 17:1.

[0043] In this invention, the size of the transmissive area 21 in the privacy layer 2 is several times that of the non-transmissive area 22. This design increases the amount of incident light into the privacy layer 2, thereby improving transmittance and display brightness. Simultaneously, since the size of the non-transmissive area 22 and the transmissive area 21 remain within the aforementioned proportional range, the privacy protection effect is also guaranteed.

[0044] This utility model also provides a display device, including the novel privacy film as described above.

[0045] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A high-transparency privacy film, characterized in that: It includes a first substrate layer and a privacy layer, wherein the privacy layer is disposed on the upper surface of the first substrate layer; the privacy layer includes transmissive areas and non-transmissive areas arranged alternately at a preset distance along a first direction. It also includes a microstructure layer, which is disposed on the side of the first substrate layer away from the privacy shield; The microstructure layer is a wave-shaped structure, which is composed of alternating convex and concave wave shapes along a first direction at a preset distance.

2. The high-transparency privacy film according to claim 1, characterized in that: The concave wave shape is set corresponding to the non-transparent area.

3. The high-transparency privacy film according to claim 1, characterized in that: The height of the convex and concave wavy shapes is 20-50 μm.

4. The high-transparency privacy film according to claim 1, characterized in that: The apex angle of the convex wave shape has an arc of 50-70 degrees.

5. The high-transparency privacy film according to claim 1, characterized in that: The width of the transmissive region is 22-28 μm above the structure and 24.67-32.67 μm below the structure; the width of the non-transmissive region is 4.5-10.5 μm above the structure and 2-5 μm below the structure.

6. The high-transparency privacy film according to claim 1, characterized in that, The pitch of the transmission region is 28.5-38 μm.

7. The high-transparency privacy film according to claim 1, characterized in that: The upper width ratio of the transmissive region to the non-transmissive region is 4:1-6:1, and the lower width ratio is 12:1-17:

1.

8. A display device, characterized in that: Includes the high-transparency privacy film as described in any one of claims 1-7.

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