CN212208775U - Peep-proof film - Google Patents
Peep-proof film Download PDFInfo
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- CN212208775U CN212208775U CN202020899486.8U CN202020899486U CN212208775U CN 212208775 U CN212208775 U CN 212208775U CN 202020899486 U CN202020899486 U CN 202020899486U CN 212208775 U CN212208775 U CN 212208775U
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Abstract
A peep-proof film comprises a light-permeable substrate layer, a light-permeable transmission layer and a light-impermeable shading layer, wherein the transmission layer is arranged on the substrate layer, the transmission layer is provided with a plurality of rows of first transmission parts which are arranged at intervals, and hollow parts are formed between the first transmission parts; the light shielding layer is arranged on the outer surface of the first transmission part. To the utility model discloses a peep-proof membrane, because the light shield layer is scribbled and is established on the surface of first transmission portion, and the non-well kenozooecium of filling between two adjacent first transmission portions, consequently, the volume ratio of light shield layer and non-light tight first transmission portion reduces greatly to the transmissivity of multiplicable peep-proof membrane, and promote the whole luminance of peep-proof membrane, and then improve display effect. The utility model discloses a peep-proof membrane's transmissivity is up to 70% ~ 90%, and it has the characteristics that the transmissivity is high, simple structure, and it has very strong practicality, should widely popularize.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a peep-proof membrane, in particular to peep-proof membrane of high transmissivity.
[ background of the invention ]
The peep-proof film is a peep-proof (viewing) film or privacy protection film for short, and the other general method is a peep-proof sheet; the name of English: the Privacy protection film is either: privacy filter. The main functions of the peep-proof film are to protect the privacy of the screen and to prevent peeping. The screen protection device is generally used for a display screen, can protect information on the screen, realizes the front visible screen information and the side invisible screen information, and prevents people beside the screen from seeing the screen clearly, thereby protecting privacy and preventing peeping.
The peep-proof film is usually realized through the grating structures arranged in parallel, and light is blocked by the grating at a certain angle, so that the wide viewing angle of the display screen is shifted to a narrow viewing angle, and screen information cannot be seen from the side face. A conventional privacy film is generally formed by filling a light absorbing substance such as black ink between two transparent microstructures, for example, the privacy film structure of patent zl201410063204. x. According to the peep-proof film, the black ink is directly filled between the two adjacent microstructures, and the volume ratio of the ink to the transparent structure is larger and is usually about 1: 3-1: 2, so that the transmittance of the film can be greatly influenced. The actual transmittance of the peep-proof film is usually between 50% and 70%, and the whole color of the peep-proof film is darker and is gray black, so that the display effect is influenced to a certain degree. Therefore, if the transmittance of the privacy film can be increased, it must be more satisfactory.
[ Utility model ] content
The present invention is directed to solve the above problems, and provides a peep-proof film capable of improving transmittance.
In order to achieve the above object, the present invention provides a peep-proof film, which is characterized in that the peep-proof film comprises a light-permeable substrate layer, a light-permeable transmission layer and a light-impermeable light shielding layer, wherein the transmission layer is arranged on the substrate layer, the transmission layer is provided with a plurality of rows of first transmission parts arranged at intervals, and a hollow part is formed between the first transmission parts; the light shielding layer is arranged on the outer surface of the first transmission part.
Further, the visible angle of the substrate layer viewed through the hollow part is a first angle A; the visible angle of the substrate layer observed through the first transmission part is a second angle B; the first angle a is greater than the second angle B.
Further, a light-transmitting material is filled in the hollow portion, a second transmission portion is formed in the hollow portion by the light-transmitting material, and the light-shielding layer is distributed between the first transmission portion and the second transmission portion.
Further, the visible angle of the substrate layer viewed through the second transmission part is a third angle C; the visible angle of the substrate layer observed through the first transmission part is a fourth angle D; the third angle C may or may not coincide with the fourth angle D.
Furthermore, the display device further comprises a functional layer which is arranged on one side of the transmission layer opposite to the base material layer and is spaced from the base material layer in parallel.
Further, the spatial volume ratio of the light shielding layer to the first transmission part is less than 1: 10.
Further, the thickness of the light shielding layer is less than 0.01MM, the height of the first transmission part is less than 0.5MM, and the width of the first transmission part is less than 0.1 MM.
Further, the light shielding layer is formed by applying ink to both opposite side surfaces of the first transmissive portion.
The beneficial contributions of the utility model reside in that, it has effectively solved above-mentioned problem. The utility model discloses a peep-proof membrane includes substrate layer and transmission layer, the transmission layer is equipped with interval arrangement's first transmission portion and hollow portion, be equipped with the light shield layer on the surface of first transmission portion, because the light shield layer is scribbled and is established on the surface of first transmission portion, and the non-filling is in the well kenozooecium between two adjacent first transmission portions, consequently, the volume ratio of light shield layer and non-light tight first transmission portion reduces greatly, thereby the transmissivity of multiplicable peep-proof membrane, and promote the whole luminance of peep-proof membrane, and then improve the display effect. The utility model discloses a peep-proof membrane has the characteristics of transmissivity height, simple structure, and it has very strong practicality, should widely popularize.
[ description of the drawings ]
Fig. 1 is a schematic view of embodiment 1.
Fig. 2 is a schematic view of embodiment 2.
The light-shielding layer comprises a base material layer 1, a transmission layer 2, a first transmission part 21, a hollow part 22, a light-shielding layer 3, a second transmission part 4 and a functional layer 5.
[ detailed description ] embodiments
The following examples are further to explain and supplement the present invention, and do not constitute any limitation to the present invention.
As shown in fig. 1 to 2, the privacy film of the present invention includes a substrate layer 1, a transmission layer 2, and a light shielding layer 3.
The substrate layer 1 is made of a light-transmitting material, which is light-transmitting, and is usually made of PET, PVC, EVA, PC, PMMA, TPU, glass, or the like. In this embodiment, the base material layer 1 is made of a PET material. The thickness of the substrate layer 1 is about 0.1 MM.
As shown in fig. 1 to 2, the transmissive layer 2 is provided on the substrate layer 1, and includes a plurality of rows of first transmissive portions 21 arranged at intervals, and the first transmissive portions 21 are hollow to form hollow portions 22. The first transmission section 21 is elongated and extends from one end of the substrate layer 1 to the other end of the substrate layer 1. The cross section of the first transmission part 21 is trapezoidal, which may be isosceles trapezoid or unequal isosceles trapezoid. In this embodiment, the cross section of the first transmission part 21 is preferably set to be an isosceles trapezoid. In this embodiment, the wider bottom of the first transmission part 21 is close to the substrate layer 1, and the narrower top of the first transmission part 21 is far away from the substrate layer 1. Correspondingly, the hollow portion 22 is also trapezoidal in cross section: the narrower upper base of which is flush with the lower base of the first transmission part 21 and the wider lower base of which is flush with the upper base of the first transmission part 21 and has an inverted trapezoid shape.
As shown in fig. 1 to 2, the first transmissive portions 21 are uniformly arranged in the transmissive layer 2: the first transmissive portions 21 have uniform sizes and shapes, and have uniform distances therebetween.
As shown in fig. 1 to 2, the transmission layer 2 is made of a light-transmitting material, which is light-transmitting, and is generally made of PET, PVC, EVA, PC, PMMA, TPU, glass, or the like. In this embodiment, the transmissive layer 2 is formed by curing a transparent UV glue.
The height of the first transmission part 21 is less than 0.5MM, and in the present embodiment, the preferable range is 0.09MM to 0.13 MM. The width of the first transmission part 21, i.e. the width of the upper bottom and the lower bottom of the first transmission part 21, is less than 0.1MM, in this embodiment, the upper bottom is preferably 0.01MM, and the lower bottom is preferably 0.02 MM.
As shown in fig. 1 to 2, the light shielding layer 3 is disposed on the outer surface of the first transmission portion 21 at two opposite sides, and is made of opaque material. In this embodiment, the light-shielding layer 3 is formed by disposing black ink on the opposite surfaces of the first transmissive portion 21. In other embodiments, the light-shielding layer 3 may also be made of opaque materials such as gray ink, white ink, etc. The thickness of the light shielding layer 3 is less than 0.01MM, and the volume ratio of the light shielding layer to the first transmission part 21 is less than 1: 10.
In order to facilitate the processing and improve the transmittance, the angle between the two side surfaces of the first transmission part 21 and the normal of the substrate layer 1 should be less than ± 5 °. When the angle between the both side surfaces of the first transmission part 21 and the normal line of the base material layer 1 is smaller, the influence of the light shielding layer 3 provided on the surface of the first transmission part 21 on the transmittance of the privacy film is smaller, and the transmittance of the privacy film is higher.
For a clearer explanation of the structure of the invention, the following description is given with different embodiments:
example 1
As shown in fig. 1, in the present embodiment, the light shielding layer 3 is disposed on the side surface of the first transmission portion 21, and the light shielding layer 3 is not disposed on the upper bottom surface of the first transmission portion 21, so that light can be transmitted from the top of the first transmission portion 21, i.e., the upper bottom surface of the first transmission portion 21. Furthermore, light can also pass out of the hollow portion 22.
As shown in fig. 1, since the light shielding layer 3 is distributed between the first transmissive portion 21 and the hollow portion 22, the viewing angle of the screen content on the side of the substrate layer 1 viewed through the hollow portion 22 and the first transmissive portion 21 is limited; wherein, the visual angle of the substrate layer 1 viewed through the hollow part 22 is a first angle a, and the visual angle of the substrate layer 1 viewed through the first transmission part 21 is a second angle B; the first angle a is greater than the second angle B. Since the refractive index of the hollow portion 22 is about 1 and the refractive index of the first transmission portion 21 is greater than 1, which is generally 1.4-1.6, when the first angle a is greater than the second angle B, the same area size can be seen when the screen is viewed through the hollow portion 22 and the first transmission portion 21, thereby ensuring that the same visual effect can be generated when the screen is viewed through the first transmission portion 21 and the hollow portion 22.
Further, a functional layer 5 may be provided on the side of the transmissive layer 2 opposite to the base layer 1. The functional layer 5 may be provided according to the effect to be achieved. For example, the functional layer 5 may be an antiglare layer; as another example, the functional layer 5 may be used to enhance the overall stiffness of the privacy film. As another example, the functional layer 5 may be the same transparent layer as the substrate layer 1. The functional layer 5 may enhance the film properties of the privacy film on the one hand and may protect the transmissive layer 2 on the other hand.
The functional layer 5 may be compounded on top of the first transmissive part 21 of the transmissive layer 2 by a known process, for example, by gluing on top of the first transmissive part 21.
Example 2
As shown in fig. 2, the light shielding layer 3 is disposed on the side surface of the first transmission part 21, and the light shielding layer 3 is not disposed on the upper bottom surface of the first transmission part 21, so that light can be transmitted from the top of the first transmission part 21, i.e., the upper bottom surface of the first transmission part 21.
In this embodiment, as shown in fig. 2, the hollow portion 22 is filled with a light transmitting material. The light transmissive material fills the hollow portion 22 to be flush with the first transmissive portion 21. The light-transmitting material is cured and molded in the hollow portion 22 to form the second transmission portion 4.
As shown in fig. 2, the light shielding layer 3 is distributed between the first transmission portion 21 and the second transmission portion 4.
The refractive index of the second transmission part 4 is identical to the refractive index of the first transmission part 21. In this embodiment, the transparent material used for the second transmission portion 4 is the same as the material used for the first transmission portion 21, and both of them use transparent UV glue. When the transparent UV glue is processed, the first transmission part 21 and the second transmission part 4 are formed after the transparent UV glue is cured.
With the present embodiment, as shown in fig. 2, the screen content on the side of the base material layer 1 can be viewed through both the first transmission part 21 and the second transmission part 4. Since the light shielding layer 3 is disposed between the first transmission part 21 and the second transmission part 4, the viewing angle of the screen content on the side of the substrate layer 1 viewed through the first transmission part 21 and the second transmission part 4 is limited; the visible angle of the substrate layer 1 viewed through the second transmission part 4 is a third angle C, and the visible angle of the substrate layer 1 viewed through the first transmission part 21 is a fourth angle D; since the refractive indexes of the first and second transmission parts 21 and 4 are the same in this embodiment, the third angle C and the fourth angle D should be set to be the same, so that the same area size of the content can be seen when the screen is viewed through the first and second transmission parts 21 and 4, thereby ensuring that the same visual effect can be produced when the screen is viewed through the first and second transmission parts 21 and 4.
Further, a functional layer 5 may be provided on the side of the transmissive layer 2 opposite to the base layer 1. The functional layer 5 is spaced parallel to the base material layer 1, and sandwiches the transmissive layer 2. The functional layer 5 may be provided according to the effect to be achieved. For example, the functional layer 5 may be an antiglare layer; as another example, the functional layer 5 may be used to enhance the overall stiffness of the privacy film. For another example, the functional layer 5 may be a transparent substrate layer similar to the substrate layer 1. The functional layer 5 may enhance the film properties of the privacy film on the one hand and may protect the transmissive layer 2 on the other hand.
The functional layer 5 may be compounded on top of the first and second transmissive layers 2 and 2 of the transmissive layer 2 by a known process, for example, by gluing on the surface of the transmissive layer 2.
Example 3
The basic structure of this embodiment is the same as that of embodiment 2, except that in this embodiment, the refractive index of the light-transmitting material filled in the hollow portion 22 is different from that of the first transmission portion 21, and therefore, the third angle C is different from the fourth angle D; the angle between the third angle C and the fourth angle D may be set according to the refractive indexes of the first transmissive portion 21 and the second transmissive portion 4.
Therefore, the peep-proof film of the utility model is formed. The utility model discloses a peep-proof membrane, it forms light shield layer 3 through set up light-tight material on the first transmission portion 21 of transmission layer 2, and the indirect light-tight material of packing between two adjacent first transmission portions 21, consequently, light shield layer 3 and the non-light tight volume proportion of the first transmission portion 21 reduce greatly to the transmissivity of multiplicable peep-proof membrane, and promote the whole luminance of peep-proof membrane, and then improve the display effect. The utility model discloses a peep-proof membrane's transmissivity is up to 70% ~ 90%, and it has the characteristics that the transmissivity is high, simple structure, and it has very strong practicality, should widely popularize.
The utility model discloses a peep-proof membrane accessible is prepared with following step:
s1, processing the transmission layer 2 on the substrate layer 1 by a UV coating process, wherein the transmission layer 2 is formed with a plurality of first transmission parts 21 spaced in parallel, and hollow parts 22 are formed between the first transmission parts 21.
S2, a light-impermeable material, such as black ink, is applied on the surface of the first transmission part 21, and then the light-impermeable material on the upper bottom of the first transmission part 21 is removed by a known process such as rubbing or transfer printing, so that the light-shielding layer 3 is formed only on the opposite side surfaces of the first transmission part 21.
With the structure of embodiment 1, after the step of S2, the functional layer 5 may be further laminated on top of the first transmissive part 21 by a known process.
In the structures of examples 2 and 3, after the step of S2, the hollow portion 22 of the transmissive layer 2 is filled with a fluid light transmissive material, and then the light transmissive material is cured to form the second transmissive portion 4. The filled light-transmitting material may be selected from a transparent UV glue which is curable by UV irradiation into the second transmission part 4; after the second transmissive part 4 is formed, the functional layer 5 may be further laminated on the surfaces of the first and second transmissive parts 21 and 4 by a known process.
While the invention has been described with reference to the above embodiments, the scope of the invention is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the concept of the invention.
Claims (8)
1. A privacy film, characterized in that it comprises:
a substrate layer (1) that is light-permeable;
the light-transmitting layer (2) is light-permeable and arranged on the base material layer (1), the light-transmitting layer (2) is provided with a plurality of rows of first transmission parts (21) which are arranged at intervals, and hollow parts (22) are formed between the first transmission parts (21);
and a light-shielding layer (3) which is opaque and is provided on the outer surface of the first transmission section (21).
2. The privacy film of claim 1,
the visible angle of the substrate layer (1) viewed through the hollow part (22) is a first angle A;
the visible angle of the substrate layer (1) is a second angle B when the substrate layer is observed through the first transmission part (21);
the first angle a is greater than the second angle B.
3. The privacy film of claim 1, wherein a light-transmissive material is filled in the hollow portion (22), the light-transmissive material forms a second transmissive portion (4) within the hollow portion (22), and the light-shielding layer (3) is distributed between the first transmissive portion (21) and the second transmissive portion (4).
4. The privacy film of claim 3,
the visible angle of the substrate layer (1) is a third angle C when the substrate layer is observed through the second transmission part (4);
the visible angle of the substrate layer (1) is a fourth angle D when the substrate layer is observed through the first transmission part (21);
the third angle C may or may not coincide with the fourth angle D.
5. The privacy film of claim 1, further comprising:
and the functional layer (5) is arranged on one side, opposite to the base material layer (1), of the transmission layer (2) and is spaced from the base material layer (1) in parallel.
6. The privacy film according to claim 1, wherein a volume ratio of the light-shielding layer (3) to the first transmission section (21) is 1:10 or less.
7. The privacy film of claim 1, wherein the light-shielding layer (3) has a thickness of less than 0.01MM, the first transmissive portion (21) has a height of less than 0.5MM, and the first transmissive portion (21) has a width of less than 0.1 MM.
8. The privacy film of claim 1, wherein the light-shielding layer (3) is formed by applying an opaque material to opposite side surfaces of the first transmissive portion (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020899486.8U CN212208775U (en) | 2020-05-26 | 2020-05-26 | Peep-proof film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020899486.8U CN212208775U (en) | 2020-05-26 | 2020-05-26 | Peep-proof film |
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| CN212208775U true CN212208775U (en) | 2020-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627319A (en) * | 2020-05-26 | 2020-09-04 | 深圳市真屏科技发展有限公司 | Peep-proof film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627319A (en) * | 2020-05-26 | 2020-09-04 | 深圳市真屏科技发展有限公司 | Peep-proof film |
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