Optical film and display

Abstract

Embodiments of the present application disclose an optical film and a display, including: a substrate and a plurality of microstructures disposed on the substrate; a microstructure includes a plurality of first line segments and a plurality of second line segments; in the extending direction of the microstructure, the first line segments and the second line segments are alternately arranged and connected; the extending direction of the first line segments intersects with the extending direction of the second line segments; the present application changes the optical path of part of the light rays of the display screen by using the microstructures disposed on the substrate, thereby weakening the bright and dark stripes and moiré patterns brought by the periodic microstructures of the display screen.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to an optical film and a display. Background Art

[0002] With the progress of social economy and science and technology, users have different visual requirements for sharing materials and confidential materials. The conventional display screen mode can no longer meet the needs of users well. At present, wide-view and narrow-view display screens have become an important development direction in the display field.

[0003] In the process of researching and practicing the existing technologies, the inventors of this application found that currently, in the existing technical means, the viewing angle is mainly increased or decreased by adding many periodic microstructures to the display screen. However, due to the existence of the periodic microstructures, it is easy to cause light interference and diffraction, resulting in bright and dark stripes or moiré patterns in the display pattern, which affects the display quality. Summary of the Invention

[0004] An embodiment of this application provides an optical film, which can change the optical path of some light rays and thus weaken the bright and dark stripes and moiré patterns brought by the periodic microstructures of the display screen.

[0005] An embodiment of this application provides an optical film, including:

[0006] A substrate;

[0007] A plurality of microstructures, which are used to change the optical path of some light rays, and the microstructures are arranged on the substrate; one of the microstructures includes a plurality of first line segments and a plurality of second line segments; in the extending direction of the microstructure, the first line segments and the second line segments are alternately arranged, and the first line segments and the second line segments are connected; the extending direction of the first line segment intersects with the extending direction of the second line segment.

[0008] Optionally, in some embodiments of this application, the optical film further includes a transparent layer, the transparent layer is arranged on the substrate and covers the microstructures, and the refractive index of the transparent layer is different from that of the microstructures.

[0009] Optionally, in some embodiments of this application, the optical film further includes a transparent layer, the transparent layer is arranged on the substrate, the thickness of the transparent layer is lower than that of the microstructures, and the refractive index of the transparent layer is different from that of the microstructures.

[0010] Optionally, in some embodiments of this application, the refractive index of the transparent layer is greater than that of the microstructures.

[0011] Optionally, in some embodiments of the present application, the optical film further includes a transparent layer, the transparent layer includes a first transparent layer and a second transparent layer, the first transparent layer is disposed on the substrate and the thickness of the first transparent layer is lower than the thickness of the microstructures, the second transparent layer is disposed on the first transparent layer, the thickness of the transparent layer is greater than the thickness of the microstructures, and the refractive index of the first transparent layer is different from the refractive index of the second transparent layer.

[0012] Optionally, in some embodiments of the present application, the refractive index of the microstructures is less than the refractive index of the first transparent layer, and the refractive index of the first transparent layer is less than the refractive index of the second transparent layer.

[0013] Optionally, in some embodiments of the present application, the refractive index of the microstructures is the same as the refractive index of the substrate.

[0014] Optionally, in some embodiments of the present application, the lengths of the first line segment portion and the second line segment portion are not equal.

[0015] Optionally, in some embodiments of the present application, there is an included angle between the first line segment portion and the second line segment portion, and the degrees of adjacent included angles located on the same microstructures are not equal.

[0016] Correspondingly, an embodiment of the present application further provides a display, including a display panel and the optical film, and the optical film is disposed on the display panel.

[0017] An embodiment of the present application adopts an optical film, which can change the optical path of some light rays and thus weaken the bright and dark stripes and moiré patterns brought by the periodic microstructures of the display screen. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the optical film provided by Embodiment 1 of the present application;

[0020] Figure 2 It is a top view structural diagram of the optical film provided by Embodiment 1 of the present application;

[0021] Figure 3 It is a schematic optical path diagram on the microstructures when the optical film provided by Embodiment 1 of the present application is placed upright;

[0022] Figure 4It is a schematic optical path diagram on the microstructure when the optical film is placed upside down in the first embodiment of the present application;

[0023] Figure 5 It is a schematic top view structure diagram of the optical film provided in the first embodiment of the present application in some embodiments;

[0024] Figure 6 It is a schematic structure diagram of the optical film provided in the second embodiment of the present application;

[0025] Figure 7 It is a schematic optical path diagram on the microstructure of the optical film provided in the second embodiment of the present application;

[0026] Figure 8 It is a schematic structure diagram of the optical film provided in the third embodiment of the present application;

[0027] Figure 9 It is a schematic optical path diagram on the microstructure of the optical film provided in the third embodiment of the present application;

[0028] Figure 10 It is a schematic structure diagram of the display provided in the fourth embodiment of the present application.

[0029] Description of reference numerals:

[0030] Optical film 100, substrate 10, microstructure 20, transparent layer 30, first line segment part 21, second line segment part 22, first transparent layer 31, second transparent layer 32, display 200, display panel 210. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the drawings; and "inner" and "outer" refer to the outline of the device.

[0032] The embodiments of the present application provide a display panel, which will be described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0033] Embodiment 1

[0034] Please refer to Figure 1And Figure 2 The optical film 100 includes a substrate 10 and a plurality of microstructures 20, and the microstructures 20 are disposed on the substrate 10. A microstructure 20 includes a plurality of first line segments 21 and a plurality of second line segments 22. In the extending direction of the microstructure 20, the first line segments 21 and the second line segments 22 are alternately disposed, and the first line segments 21 and the second line segments 22 are connected. The extending direction of the first line segment intersects with the extending direction of the second line segment.

[0035] It can be understood that, in this embodiment, the optical path of part of the light rays of the display screen is changed by using the microstructures 20 disposed on the substrate 10, thereby weakening the bright and dark stripes and moiré patterns brought by the periodic microstructures 20 of the display screen. It should be noted that when light enters the microstructures 20, an included angle is formed between part of the structures of the microstructures 20 and the light rays. At this time, the optical path of part of the light rays is changed, and part of the light rays are perpendicularly incident, so the optical path will not be changed. Therefore, the characteristic of changing the optical path of part of the light rays by the microstructures can be used to destroy the periodicity of the light rays.

[0036] It should be noted that the dotted line between the first line segment part and the second line segment part in the microstructure is only exemplary for convenience of description and is not used to limit the solution of the microstructure. In fact, the first line segment part and the second line segment part of the microstructure can be integrally provided or non-integrally provided, and no limitation is made here.

[0037] It should be noted that the extending direction can be understood as the extending direction of the microstructure, not just a certain straight line direction, but should be understood as any trend of the microstructure. It should be noted that when the first line segment part and the second line segment part are straight strips, the extending direction of the first line segment part and the second line segment part should be understood as the generatrix direction; when the first line segment part and the second line segment part are broken lines, the extending direction of the first line segment part and the second line segment part should be understood as their trend.

[0038] Please refer to Figure 3 In this embodiment, the optical film 100 further includes a transparent layer 30. The transparent layer 30 is disposed on the substrate 10 and covers the microstructures 20, and the refractive index of the transparent layer 30 is different from that of the microstructures 20.

[0039] It can be understood that, in this embodiment, by providing the transparent layer 30, the principle of light refraction can be used to further refract the light rays and destroy the periodicity of the original light rays.

[0040] In this embodiment, the refractive index of the transparent layer 30 is greater than that of the microstructures 20.

[0041] It can be understood that, in this embodiment, by setting the refractive index of the transparent layer 30 to be greater than that of the microstructures 20, it can also be used to increase or decrease the viewing angle of the display screen. Please refer to Figure 3, it should be noted that in this embodiment, when the substrate 10 is used as the light incident surface, the optical film 100 is defined as being placed upright; please refer to Figure 4 , when the substrate 10 is used as the light exit surface, the optical film 100 is defined as being placed upside down. When the optical film 100 is placed upright on the display screen, it can be used to increase the viewing angle of the display screen; when the optical film 100 is placed upside down on the display screen, it can be used to decrease the viewing angle of the display screen, which can be applied to different requirements.

[0042] In this embodiment, the refractive index of the micro-structure 20 is the same as that of the substrate 10.

[0043] It can be understood that in this embodiment, by setting the refractive index of the micro-structure 20 to be the same as that of the substrate 10, that is, the optical path of the light in the micro-structure 20 and the substrate 10 remains unchanged, which is convenient for personnel to adjust the proportion of the light whose optical path needs to be changed. Because in this embodiment, the periodicity of the light is destroyed by changing the optical path of some of the light.

[0044] It should be noted that in this embodiment, the shapes of the first line segment portion 21 and the second line segment portion 22 are frustum-shaped. In fact, the shapes of the first line segment portion 21 and the second line segment portion 22 are not limited to this, and may also include cylinders, prisms, pyramids, etc. It should be noted that in some embodiments, the shapes of the first line segment portion 21 and the second line segment portion 22 may be different. For example: the first line segment portion 21 is frustum-shaped and the second line segment portion 22 is cylindrical. Or any combination, such a design can further destroy the periodicity of the micro-structure, and thus destroy the periodicity of the light.

[0045] It should be noted that in this embodiment, the micro-structure 20 can be made by a yellow light process, and the transparent layer 30 is made by a coating process. The material of the micro-structure 20 can be the same as the material of the substrate 10.

[0046] In this embodiment, the lengths of the first line segment portion 21 and the second line segment portion 22 are not equal.

[0047] It can be understood that by setting the lengths of the first line segment portion 21 and the second line segment portion 22 to be not equal, the periodicity of the micro-structure 20 can be further destroyed, and thus the periodicity of the light can be destroyed, achieving a better effect of weakening moiré patterns or bright and dark stripes. Please refer to Figure 5 , in some embodiments, for the consideration of simplifying the process of the micro-structure 20, the lengths of the first line segment portion 21 and the second line segment portion 22 are equal. The length range of the first line segment portion 21 is greater than 0 and less than or equal to 5 meters, including 0.001 meters, 2.5 meters or 5 meters, and the length range of the second line segment portion 22 is greater than 0 and less than or equal to 5 meters, including 0.001 meters, 2.5 meters or 5 meters.

[0048] In this embodiment, there is an included angle between the first line segment portion 21 and the second line segment portion 22, and the degrees of adjacent included angles located on the same micro-structure are not equal.

[0049] As Figure 2 shown, the included angle between the first line segment portion 21 and the second line segment portion 22 connected thereto is θ1, and the included angle between the second line segment portion 22 and the next first line segment portion 21 connected thereto is θ2. By setting that there is an included angle between the first line segment portion 21 and the second line segment portion 22 and the degrees of adjacent included angles are not equal, that is, θ1 and θ2 have different degrees, the periodicity of the micro-structure 20 can be further destroyed, and then the periodicity of light can be destroyed, so as to achieve a better effect of weakening moiré patterns or light and dark stripes. It should be noted that the value of the degree of the included angle is greater than 0 degree and less than 180 degrees, such as 1°, 90° or 179°. Please refer to Figure 5 , in some embodiments, for the consideration of simplifying the process of the micro-structure 20, there is an included angle between the first line segment portion 21 and the second line segment portion 22 and the degrees of adjacent included angles are equal.

[0050] The thickness of the micro-structure 20 is greater than 0 micrometer and less than or equal to 100 micrometers, including 0.01 micrometer, 50 micrometers or 100 micrometers. The thickness of the transparent layer 30 is greater than 0 micrometer and less than or equal to 100 micrometers, including 0.01 micrometer, 50 micrometers or 100 micrometers.

[0051] It can be understood that when the first line segment portion and the second line segment portion are in the shape of a frustum of a pyramid, the thickness of the micro-structure refers to: the distance between the upper edge of the frustum of the pyramid and the substrate; when the first line segment portion and the second line segment portion are in the shape of a triangle, the thickness of the micro-structure refers to: the distance between the vertex of the triangle and the substrate; when the first line segment portion and the second line segment portion are in the shape of a cylinder, the thickness of the micro-structure refers to: the maximum distance between the side surface of the cylinder and the substrate.

[0052] Embodiment 2

[0053] Please refer to Figure 2 and Figure 6 , the optical film 100 includes a substrate 10 and a plurality of micro-structures 20, and the micro-structures 20 are arranged on the substrate 10. A micro-structure 20 includes a plurality of first line segment portions 21 and a plurality of second line segment portions 22. In the extending direction of the micro-structure 20, the first line segment portions 21 and the second line segment portions 22 are alternately arranged and the first line segment portions 21 and the second line segment portions 22 are connected. The extending direction of the first line segment intersects with the extending direction of the second line segment.

[0054] It can be understood that in this embodiment, the optical path of part of the light of the display screen is changed by the microstructure 20 provided on the substrate 10, thereby weakening the bright and dark stripes and moiré patterns brought by the periodic microstructure 20 of the display screen. It should be noted that when light enters the microstructure 20, part of the structure of the microstructure 20 forms an angle with the light. At this time, the optical path of part of the light is changed, and part of the light is perpendicularly incident, so the optical path will not be changed. Therefore, the characteristic of the microstructure to change the optical path of part of the light can be used to destroy the periodicity of the light.

[0055] It should be noted that the dotted line between the first line segment part and the second line segment part in the microstructure is only exemplary for the convenience of description and is not used to limit the solution of the microstructure. In fact, the first line segment part and the second line segment part of the microstructure can be integrally arranged or non-integrally arranged, and no limitation is made here.

[0056] It should be noted that the extension direction can be understood as the extension direction of the microstructure, not just a certain straight line direction, but should be understood as any trend of the microstructure. It should be noted that when the first line segment part and the second line segment part are straight bar-shaped, the extension direction of the first line segment part and the second line segment part should be understood as the generatrix direction; when the first line segment part and the second line segment part are zigzag-shaped, the extension direction of the first line segment part and the second line segment part should be understood as its trend.

[0057] Please refer to Figure 7 , in this embodiment, the optical film 100 further includes a transparent layer 30. The transparent layer 30 is provided on the substrate 10. The thickness of the transparent layer 30 is lower than the thickness of the microstructure 20, and the refractive index of the transparent layer 30 is different from that of the microstructure 20.

[0058] It can be understood that in this embodiment, setting the transparent layer 30 can further refract the light by using the principle of light refraction and destroy the periodicity of the original light. It should be noted that in this embodiment, by setting the thickness of the transparent layer 30 to be lower than the thickness of the microstructure 20, the refraction of light from the microstructure 20 to the air can be realized, further increasing the complexity of the optical path, and thus enhancing the effect of destroying the periodicity of the light of the display screen. It should be noted that the thicknesses of both the transparent layer 30 and the microstructure 20 are the heights protruding from the substrate 10.

[0059] In this embodiment, the refractive index of the transparent layer 30 is greater than that of the microstructure 20.

[0060] It can be understood that in this embodiment, by setting the refractive index of the transparent layer 30 to be greater than that of the microstructure 20, it can also be used to increase or decrease the viewing angle of the display screen. It should be noted that in this embodiment, when the substrate 10 is used as the light incident surface, the optical film 100 is defined as being placed upright; when the substrate 10 is used as the light exit surface, the optical film 100 is defined as being placed upside down. When the optical film 100 is placed upright on the display screen, it can be used to increase the viewing angle of the display screen; when the optical film 100 is placed upside down on the display screen, it can be used to decrease the viewing angle of the display screen, which can be applied to different requirements.

[0061] In this embodiment, the refractive index of the microstructure 20 is the same as that of the substrate 10.

[0062] It can be understood that in this embodiment, by setting the refractive index of the microstructure 20 to be the same as that of the substrate 10, that is, the optical path of the light in the microstructure 20 and the substrate 10 remains unchanged, which is convenient for personnel to adjust the proportion of the light that needs to change the optical path. Because in this embodiment, the optical path of some light is changed, thereby destroying the periodicity of the light.

[0063] It should be noted that in this embodiment, the shape of the microstructure 20 is a frustum of a pyramid. In fact, the shape of the microstructure 20 is not limited to this, and it can also include cylinders, prisms, pyramids, etc. It should be noted that in some embodiments, the shapes of the first line segment portion 21 and the second line segment portion 22 can be different. For example: the first line segment portion 21 is a frustum of a pyramid, and the second line segment portion 22 is a cylinder. Or any combination, such a design can further destroy the periodicity of the microstructure, and then destroy the periodicity of the light.

[0064] It should be noted that in this embodiment, the microstructure 20 can be made by a yellow light process, and the transparent layer 30 is made by a coating process. The material of the microstructure 20 can be the same as that of the substrate 10.

[0065] In this embodiment, the lengths of the first line segment portion 21 and the second line segment portion 22 are not equal.

[0066] It can be understood that by setting the lengths of the first line segment portion 21 and the second line segment portion 22 to be not equal, the periodicity of the microstructure 20 can be further destroyed, and then the periodicity of the light can be destroyed, achieving a better effect of weakening moiré patterns or bright and dark stripes. In some embodiments, for the consideration of simplifying the process of the microstructure 20, the lengths of the first line segment portion 21 and the second line segment portion 22 are equal. The length range of the first line segment portion 21 is greater than 0 and less than or equal to 5 meters, including 0.001 meters, 2.5 meters or 5 meters, and the length range of the second line segment portion 22 is greater than 0 and less than or equal to 5 meters, including 0.001 meters, 2.5 meters or 5 meters.

[0067] In this embodiment, there is an included angle between the first line segment portion 21 and the second line segment portion 22, and the degrees of adjacent included angles located on the same micro-structure are not equal.

[0068] It can be understood that the included angle between the first line segment portion 21 and the second line segment portion 22 connected thereto is θ1, and the included angle between the second line segment portion 22 and the next first line segment portion 21 connected thereto is θ2. By setting that there is an included angle between the first line segment portion 21 and the second line segment portion 22 and the degrees of adjacent included angles are not equal, that is, the degrees of θ1 and θ2 are not equal, the periodicity of the micro-structure 20 can be further destroyed, and then the periodicity of light can be destroyed, so as to achieve a better effect of weakening moiré patterns or bright and dark stripes. It should be noted that the value of the degree of the included angle is greater than 0 degrees and less than 180 degrees, such as 1°, 90° or 179°. In some embodiments, for the consideration of simplifying the process of the micro-structure 20, there is an included angle between the first line segment portion 21 and the second line segment portion 22 and the degrees of adjacent included angles are equal.

[0069] The thickness of the micro-structure 20 is greater than 0 micrometers and less than or equal to 100 micrometers, including 0.01 micrometers, 50 micrometers or 100 micrometers. The thickness of the transparent layer 30 is greater than 0 micrometers and less than or equal to 100 micrometers, including 0.01 micrometers, 50 micrometers or 100 micrometers.

[0070] It can be understood that when the first line segment portion and the second line segment portion are in the shape of a frustum of a pyramid, the thickness of the micro-structure refers to: the distance between the upper edge of the frustum of the pyramid and the substrate; when the first line segment portion and the second line segment portion are in the shape of a triangle, the thickness of the micro-structure refers to: the distance between the vertex of the triangle and the substrate; when the first line segment portion and the second line segment portion are in the shape of a cylinder, the thickness of the micro-structure refers to: the maximum distance between the side surface of the cylinder and the substrate.

[0071] Embodiment Three

[0072] Please combine Figure 2 and Figure 8 to obtain an optical film 100, which includes: a substrate 10 and a plurality of micro-structures 20. The micro-structures 20 are used to change the optical path of part of the light, and the micro-structures 20 are arranged on the substrate 10. A micro-structure 20 includes a plurality of first line segment portions 21 and a plurality of second line segment portions 22. In the extending direction of the micro-structure 20, the first line segment portions 21 and the second line segment portions 22 are alternately arranged, and the first line segment portions 21 and the second line segment portions 22 are connected. The extending direction of the first line segment intersects with the extending direction of the second line segment.

[0073] It can be understood that in this embodiment, the microstructures 20 provided on the substrate 10 are used to change the optical paths of some light rays of the display screen, thereby weakening the bright and dark stripes and moiré patterns brought by the periodic microstructures 20 of the display screen. It should be noted that when light enters the microstructures 20, some structures of the microstructures 20 form an angle with the light rays. At this time, the optical paths of some light rays are changed, and some light rays are perpendicularly incident, so the optical paths will not be changed. Therefore, the characteristic of using the microstructures to change the optical paths of some light rays can be used to destroy the periodicity of the light rays.

[0074] It should be noted that the dotted line between the first line segment part and the second line segment part in the microstructure is only exemplary for the convenience of description and is not used to limit the solution of the microstructure. In fact, the first line segment part and the second line segment part of the microstructure can be integrally arranged or non-integrally arranged, and no limitation is made here.

[0075] It should be noted that the extension direction can be understood as the extension direction of the microstructure, not just a certain straight line direction, but should be understood as any trend of the microstructure. It should be noted that when the first line segment part and the second line segment part are straight bar-shaped, the extension direction of the first line segment part and the second line segment part should be understood as the generatrix direction; when the first line segment part and the second line segment part are broken line-shaped, the extension direction of the first line segment part and the second line segment part should be understood as its trend.

[0076] Please refer to Figure 9 , in this embodiment, the optical film 100 further includes a transparent layer 30. The transparent layer 30 includes a first transparent layer 31 and a second transparent layer 32. The first transparent layer 31 is provided on the substrate 10 and the thickness of the first transparent layer 31 is lower than the thickness of the microstructures 20. The second transparent layer 32 is provided on the first transparent layer 31. The thickness of the transparent layer 30 is greater than the thickness of the microstructures 20. The refractive index of the first transparent layer 31 is different from the refractive index of the second transparent layer 32.

[0077] It can be understood that in this embodiment, by providing the first transparent layer 31 and the second transparent layer 32, when light rays enter the transparent layer 30 from the microstructures 20, they will have different refraction paths, increasing the complexity of the optical paths, which is beneficial to weakening moiré patterns or bright and dark stripes. In some embodiments, the transparent layer 30 can be a multi-layer structure, including three or more layers.

[0078] In this embodiment, the refractive index of the microstructures 20 is less than the refractive index of the first transparent layer 31, and the refractive index of the first transparent layer 31 is less than the refractive index of the second transparent layer 32.

[0079] It can be understood that in this embodiment, the refractive index of the first transparent layer 31 being less than that of the second transparent layer 32 not only helps to increase the complexity of the light path, is conducive to weakening moiré patterns or bright and dark stripes, but also can achieve the purpose of increasing or decreasing the viewing angle of the display screen. In some embodiments, the transparent layer 30 can be a multi-layer structure including three or more layers, and the refractive index of the transparent layer 30 increases in the thickness direction.

[0080] In this embodiment, the refractive index of the transparent layer 30 is greater than that of the microstructure 20.

[0081] It can be understood that in this embodiment, by setting the refractive index of the transparent layer 30 to be greater than that of the microstructure 20, it can also be used to increase or decrease the viewing angle of the display screen. It should be noted that in this embodiment, when the substrate 10 is used as the light incident surface, the optical film 100 is defined as being placed upright; when the substrate 10 is used as the light exiting surface, the optical film 100 is defined as being placed upside down. When the optical film 100 is placed upright on the display screen, it can be used to increase the viewing angle of the display screen; when the optical film 100 is placed upside down on the display screen, it can be used to decrease the viewing angle of the display screen, which can be applied to different requirements.

[0082] In this embodiment, the refractive index of the microstructure 20 is the same as that of the substrate 10.

[0083] It can be understood that in this embodiment, by setting the refractive index of the microstructure 20 to be the same as that of the substrate 10, that is, the light path of the light in the microstructure 20 and the substrate 10 remains unchanged, which is convenient for personnel to adjust the proportion of the light whose light path needs to be changed. Because in this embodiment, the periodicity of the light is destroyed by changing the light path of some of the light.

[0084] It should be noted that in this embodiment, the shape of the microstructure 20 is a frustum of a pyramid. In fact, the shape of the microstructure 20 is not limited to this, and it can also include cylinders, prisms, pyramids, etc. It should be noted that in some embodiments, the shapes of the first line segment portion 21 and the second line segment portion 22 can be different. For example: the first line segment portion 21 is a frustum of a pyramid, and the second line segment portion 22 is a cylinder. Or any combination, such a design can further destroy the periodicity of the microstructure, and thus destroy the periodicity of the light.

[0085] It should be noted that in this embodiment, the microstructure 20 can be made by a yellow light process, and the transparent layer 30 is made by a coating process. The material of the microstructure 20 can be the same as that of the substrate 10.

[0086] In this embodiment, the lengths of the first line segment portion 21 and the second line segment portion 22 are not equal.

[0087] It can be understood that by setting the lengths of the first line segment portion 21 and the second line segment portion 22 to be unequal, the periodicity of the microstructure 20 can be further disrupted, and then the periodicity of light can be disrupted, achieving a better effect of weakening moiré patterns or light and dark stripes. In some embodiments, for the consideration of simplifying the process of the microstructure 20, the lengths of the first line segment portion 21 and the second line segment portion 22 are equal. The length range of the first line segment portion 21 is greater than 0 and less than or equal to 5 meters, including 0.001 meters, 2.5 meters, or 5 meters, and the length range of the second line segment portion 22 is greater than 0 and less than or equal to 5 meters, including 0.001 meters, 2.5 meters, or 5 meters.

[0088] In this embodiment, there is an included angle between the first line segment portion 21 and the second line segment portion 22, and the degrees of adjacent included angles located on the same microstructure are not equal.

[0089] It can be understood that the included angle between the first line segment portion 21 and the second line segment portion 22 connected thereto is θ1, and the included angle between the second line segment portion 22 and the next first line segment portion 21 connected thereto is θ2. By setting an included angle between the first line segment portion 21 and the second line segment portion 22 and the degrees of adjacent included angles being not equal, that is, θ1 and θ2 having unequal degrees, the periodicity of the microstructure 20 can be further disrupted, and then the periodicity of light can be disrupted, achieving a better effect of weakening moiré patterns or light and dark stripes. It should be noted that the degree value of the included angle is greater than 0 degrees and less than 180 degrees, such as 1°, 90°, or 179°. In some embodiments, for the consideration of simplifying the process of the microstructure 20, there is an included angle between the first line segment portion 21 and the second line segment portion 22 and the degrees of adjacent included angles are equal.

[0090] The thickness of the microstructure 20 is greater than 0 microns and less than or equal to 100 microns, including 0.01 microns, 50 microns, or 100 microns. The thickness of the transparent layer 30 is greater than 0 microns and less than or equal to 100 microns, including 0.01 microns, 50 microns, or 100 microns.

[0091] It can be understood that when the first line segment portion and the second line segment portion are in the shape of a frustum of a pyramid, the thickness of the microstructure refers to: the distance between the upper edge of the frustum of the pyramid and the substrate; when the first line segment portion and the second line segment portion are in the shape of a triangle, the thickness of the microstructure refers to: the distance between the vertex of the triangle and the substrate; when the first line segment portion and the second line segment portion are in the shape of a cylinder, the thickness of the microstructure refers to: the maximum distance between the side surface of the cylinder and the substrate.

[0092] Embodiment Four

[0093] Please refer to Figure 10 , this embodiment provides a display 200, and the display 200 includes a display panel 210 and the optical film 100 described in any one of Embodiment One, Embodiment Two, or Embodiment Three. The optical film 100 is disposed on the display panel 210.

[0094] It can be understood that in this embodiment, the optical film 100 described in any one of Embodiment 1, Embodiment 2 or Embodiment 3 is adopted, which can change the optical path of part of the light rays of the display 200, thereby weakening the bright and dark stripes and moiré patterns caused by the periodic microstructure 20 of the display 200 and changing the viewing angle of the display 200.

[0095] The above has introduced in detail an optical film and a display provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An optical film, characterized in that, Comprising: Substrate; A plurality of microstructures, which are arranged on the substrate, and the plurality of microstructures are arranged at intervals in sequence and are arranged parallel to each other; one of the microstructures includes a plurality of first line segments and a plurality of second line segments; in the extending direction of the microstructure, the first line segments and the second line segments are arranged alternately, and the first line segments and the second line segments are connected; the extending direction of the first line segment intersects with the extending direction of the second line segment; Transparent layer, the transparent layer includes a first transparent layer and a second transparent layer, the first transparent layer is arranged on the substrate and the thickness of the first transparent layer is lower than the thickness of the microstructure, the first transparent layer does not cover the surface on the side of the microstructure away from the substrate and part of the side surfaces, the second transparent layer is arranged on the first transparent layer, the second transparent layer covers the surface of the microstructure not covered by the first transparent layer, the thickness of the transparent layer is greater than the thickness of the microstructure, the refractive index of the microstructure is less than the refractive index of the first transparent layer, and the refractive index of the first transparent layer is less than the refractive index of the second transparent layer.

2. The optical film according to claim 1, wherein The refractive index of the microstructure is the same as the refractive index of the substrate.

3. The optical film according to claim 1, wherein The lengths of the first line segment portion and the second line segment portion are not equal.

4. The optical film according to claim 1, wherein, There is an included angle between the first line segment portion and the second line segment portion, and the degrees of adjacent included angles located on the same microstructure are not equal.

5. A display, comprising a display panel and the optical film as described in any one of claims 1-4, and the optical film is arranged on the display panel.

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