Display panel and display device

Abstract

The invention relates to a display panel and a display device, the display panel comprises an anti-reflection structure layer, the anti-reflection structure layer comprises an anti-reflection film layer, and the anti-reflection film layer comprises a plurality of refraction units and a plurality of shading units which are arranged in an array and alternately distributed mode; a part of ambient light is refracted by the refraction unit, reaches the total reflection layer and then is reflected to the corresponding shading unit; the residual light of the ambient light is absorbed by the shading unit. Ambient light can be converted into more collimated light through the refraction unit to directly enter the display panel, the reflection loss of the light in the film layer is remarkably reduced, the ambient light which is originally vertically incident into the display panel and possibly lost can be redirected and reused through the total reflection layer, the ambient light is absorbed by the shading unit, and the display effect is improved. The adverse effect of the reflected light on the display effect is effectively solved, the overall display brightness of the display panel is improved, and brighter and clearer visual enjoyment is brought to users.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In the field of display technology, end customers have put forward higher requirements for the optical performance of display panels. However, in the actual use of display panels, after the external ambient light enters the display panel, it will be refracted and reflected multiple times on the surface of its internal optical components (such as transparent conductive layer, backlight module, etc.). This kind of reflected light is superimposed on the display light emitted by the display panel itself, which can easily lead to problems such as reduced image contrast, color distortion and glare, which seriously restricts the optimization of display effects.

[0003] In order to reduce the impact of ambient light reflection on the display effect, the prior art usually sets an anti-reflection film in the display device. The anti-reflection film is formed by alternately stacking high-refractive index materials and low-refractive index materials to form a multi-layer structure, and uses the principle of optical path difference to interfere with incident light of a specific wavelength, thereby reducing the reflectivity. However, this type of anti-reflection film has the following defects. The first is that the reflectivity suppression effect is limited. Due to the limitations of the material refractive index range and the matching accuracy of the film thickness, the reflectivity reduction of wide-band ambient light is insufficient, and it is difficult to cope with complex lighting scenes; the second is that the optical side effects are significant: the multi-layer film structure is prone to introduce additional hue shifts (such as bluish or yellowish colors), and may reduce the transmittance of the display light, resulting in impaired display brightness and color gamut performance. Summary of the invention

[0004] The present application provides a display panel and a display device, which can maintain or improve the color performance of the display panel, thereby providing users with a clearer, more realistic and comfortable visual experience.

[0005] In a first aspect, the present application provides a display panel, including an anti-reflection structure layer, wherein the anti-reflection structure layer includes: An anti-reflection film layer includes a plurality of refraction units and a plurality of light shielding units arranged in an array and alternately distributed; and A total reflection layer, part of the ambient light is guided by the refraction unit, and after reaching the total reflection layer, is reflected to the corresponding shading unit; the remaining ambient light is absorbed by the shading unit.

[0006] In a possible implementation, the refraction unit includes a first light guiding surface and a second light guiding surface, the first light guiding surface has a first preset angle with the plane where the total reflection layer is located, and the second light guiding surface has a second preset angle with the plane where the total reflection layer is located; After reaching the first light guiding surface, part of the ambient light is refracted to the second light guiding surface, and is reflected by the second light guiding surface to the total reflection layer.

[0007] In a possible implementation manner, the first preset angle and / or the second preset angle ranges from 45° to 75°.

[0008] In a possible implementation manner, the refraction unit includes a third refraction surface, and the third refraction surface is a curved surface structure that is concave toward the total reflection layer.

[0009] In a possible implementation, the total reflection layer includes a first transparent body and two second transparent bodies, and the two second transparent bodies are symmetrically arranged on both sides of the first transparent body; The light refracted by the refraction unit passes through the first transparent body and reaches one of the second transparent bodies, and is reflected by the second transparent body to the other second transparent body, and is reflected by the second transparent body to the corresponding shading unit.

[0010] In a possible implementation manner, the first transparent body is made of a solid transparent material; or, the first transparent body is made of a liquid transparent material filled between two second transparent bodies.

[0011] In a possible implementation manner, a refractive index of the first transparent body is greater than a refractive index of the second transparent body.

[0012] In a possible implementation, the orthographic projection area of ​​the second transparent body coincides with the orthographic projection area of ​​the shading unit; and the height of the second transparent body is the same as the width of the plane where the shading unit is located.

[0013] In a possible implementation manner, the shading unit is a black matrix structure.

[0014] In a possible implementation, the display panel includes a backlight structure layer and a display structure layer, the display structure layer is stacked on the backlight structure layer, and the anti-reflection structure layer is stacked on the display structure layer.

[0015] In a possible implementation manner, the display structure layer is provided with a shading portion, and an orthographic projection area of ​​the shading portion coincides with an orthographic projection area of ​​the shading unit.

[0016] In a second aspect, the present application provides a display device, comprising a liquid crystal box and a display panel as described in the first aspect, wherein the display panel is stacked on the liquid crystal box.

[0017] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: The display panel and display device provided in the embodiments of the present application can convert ambient light into more collimated light through a refraction unit and directly incident on the interior of the display panel, significantly reducing the reflection loss of light in the film layer, and can redirect and reuse ambient light that would otherwise be lost by vertically incident on the display panel through the total reflection layer and be absorbed by the shading unit, effectively solving the adverse effects of reflected light on the display effect, improving the overall display brightness of the display panel, and bringing brighter and clearer visual enjoyment to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0021] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application; Figure 2 A schematic diagram of a light path of a display panel provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of a display panel provided in an embodiment of the present application; Figure 4 A schematic diagram of the light path of a display panel provided in an embodiment of the present application.

[0022] Description of reference numerals: 1. Anti-reflection structure layer; 11. Anti-reflection film layer; 111. Refraction unit; 1111. First light guiding surface; 1112. Second light guiding surface; 1113. First refractor; 1114. Second refractor; 1115. Third refraction surface; 112. Shading unit; 12. Total reflection layer; 121. First transparent body; 122. Second transparent body; 2. Display structure layer; 21. Shading part; 3. Backlight structure layer. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0024] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0025] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0026] In some exemplary embodiments, Figure 1-Figure 4 As shown, a display panel includes an anti-reflection structure layer 1, wherein the anti-reflection structure layer 1 suppresses the reflection of ambient light and improves the backlight utilization efficiency through the synergistic effect of light path regulation and energy absorption.

[0027] The anti-reflection structure layer 1 is composed of two layers, the upper and lower layers, and includes an anti-reflection film layer 11 and a total reflection layer 12. The anti-reflection film layer 11 is located on the ambient light incident side and adopts a periodic micro-nano array structure, including refraction units 111 and shading units 112 arranged alternately.

[0028] The refraction unit 111 is made of a high refractive index dielectric material (such as TiO2, n>2.0), in the shape of a sub-wavelength grating or a microlens. Its surface curvature and period Λ (usually 100 - 500 nm) are optimized to efficiently refract specific angular components in the incident ambient light.

[0029] It is made of a low refractive index light-absorbing material, with a diffuse reflection or blackbody structure on the surface, used to absorb non-collimated light, such as a black matrix structure. By adjusting the energy band structure (such as doping concentration) of the light-absorbing material in the light-shielding unit 112, short-wavelength blue light below 450 nm can be selectively absorbed, improving the display color gamut (NTSC color gamut is increased by about 5%) while reducing reflection, and achieving color deviation suppression.

[0030] The total reflection layer 12 is located below the anti-reflection film layer 11, and is composed of a high-reflection metal or a distributed Bragg reflector. Its function is to totally reflect the collimated light transmitted by the refraction unit 111 and direct it to the light-shielding unit 112.

[0031] When ambient light is incident on the anti-reflection structure layer 1, the light rays in the incident light that meet the critical angle condition of the refraction unit 111 (θ < arcsin(n2 / n1), where n1 is the refractive index of air) are refracted into approximately collimated light (divergence angle < ±5°), vertically pass through the anti-reflection film layer 11 and reach the total reflection layer 12. The total reflection layer 12 reflects the collimated light back to the light-shielding unit 112, and the secondary reflection of this part of the light is eliminated through the absorption of the light-shielding unit 112.

[0032] Some of the incident light rays directly irradiate the surface of the light-shielding unit 112, and are finally absorbed after multiple diffuse reflections, preventing them from entering the display panel and causing interference.

[0033] The anti-reflection film layer 11 is prepared by nanoimprinting or laser interference lithography technology. The height difference (Δh = 50 - 150 nm) between the refraction unit 111 and the light-shielding unit 112 is controlled by a gray-scale mask to ensure the phase matching accuracy.

[0034] If the total reflection layer 12 is a metal reflection layer, it is deposited by magnetron sputtering; if it is a distributed Bragg reflector structure, SiO2 (n≈1.46) and TiO2 (n≈2.35) are alternately evaporated 3 - 5 pairs each, and the total thickness is controlled within 1.2 - 1.5 μm. Of course, it can be understood that the above formation methods and thicknesses are only for illustrative purposes and do not limit this application.

[0035] In this embodiment, through the collaborative design of refraction - reflection - absorption, the ambient light reflectivity is reduced from 2% of the traditional anti - reflection film to less than 0.8%, while achieving a double improvement in display brightness and color performance, effectively solving the contradiction between reflection suppression and light energy utilization in the prior art. Compared with the film stack idea in the related art, the display panel in this embodiment realizes the wavefront control of incident ambient light by integrating microstructures (such as sub - wavelength gratings, microlens arrays, etc.) with a specific arrangement on the surface or inside of the display panel. On the one hand, the microstructures can convert incident light rays at different angles in natural light into an approximately collimated light state, significantly reducing the number and intensity of reflections at the interfaces inside the display panel (such as the ITO transparent electrode layer, the backlight module BLU, etc.); on the other hand, the light rays are all reflected and will not enter the lower - layer structure of the display panel, improving the backlight utilization rate through optical path optimization, thereby indirectly enhancing the display brightness while reducing ambient light interference. This design takes into account both reflection suppression and light energy utilization, effectively improving the optical performance of the display panel.

[0036] In this embodiment, as Figure 1-Figure 4 shown, the anti - reflection structure layer 1 is used to direct ambient light to convert the incident light into an approximately collimated light state.

[0037] First example As Figure 1-Figure 2 shown, the refraction unit 111 includes, for example, a plurality of first refractors 1113. Each first refractor 1113 is arranged adjacent to each other, and each first refractor 1113 is, for example, in the shape of a triangular prism, so that the refraction unit 111 has a first light - guiding surface 1111 and a second light - guiding surface 1112. There is a first preset angle α between the first light - guiding surface 1111 and the plane where the total reflection layer 12 is located, and there is a second preset angle β between the second light - guiding surface 1112 and the plane where the total reflection layer 12 is located. Among them, the range of the first preset angle α is, for example, 45° - 75°, and the range of the second preset angle β is, for example, 45° - 75°, ensuring that the light can enter the total reflection layer 12 approximately collimated.

[0038] After a part of the ambient light reaches the first light - guiding surface 1111, it is refracted to the second light - guiding surface 1112 and is reflected from the second light - guiding surface 1112 to the total reflection layer 12. Among them, the second light - guiding surface 1112 is a total - reflection surface. For example, when the ambient light is incident on the first light - guiding surface 1111 at an angle θ < arcsin(n1 / n2) (n1 is the refractive index of air ≈ 1, n2 is the refractive index of the refractor material), after refraction, it reaches the second light - guiding surface 1112 and is totally reflected due to the high - reflection characteristics of the coating layer, and is guided into an approximately collimated light, vertically passing through the anti - reflection film layer 11 and reaching the total reflection layer 12. The total reflection layer 12 reflects the collimated light back to the light - shielding unit 112, and the secondary reflection of this part of the light is eliminated through the absorption effect of the light - shielding unit 112.

[0039] The large-angle light (θ ≥ arcsin(n2 / n1)) that does not meet the refraction condition in the incident light directly irradiates the surface of the shading unit 112 and is finally absorbed after multiple diffuse reflections, thereby preventing it from entering the interior of the display panel and causing interference.

[0040] Through the coordinated design of high-refractive-index transparent polymers and periodic triangular prism structures, the critical angle is effectively increased, so that ambient light is refracted rather than totally reflected within a wide range of incident angles, greatly reducing surface reflection losses and significantly enhancing display contrast and color saturation.

[0041] The second light guiding surface 1112 adopts a total reflection coating, combined with a 45° incident angle design, to ensure that the refracted light enters the total reflection layer 12 vertically after total reflection, and is then guided to the shading unit 112 through a secondary reflection mechanism, forming a closed-loop optical path of "refraction-total reflection-re-reflection", further reducing stray light escape and improving light absorption efficiency.

[0042] Second example like Figure 3-Figure 4 As shown, the refraction unit 111 includes, for example, a second refraction body 1114 , which is, for example, a concave lens structure, so that the refraction unit 111 has a third refraction surface 1115 , which is a curved surface structure concave toward the total reflection layer 12 .

[0043] After the ambient light is incident on the concave surface, it is refracted and focused, passes through the anti-reflection film layer 11, and vertically enters the total reflection layer 12. The concave lens structure collects light energy within the range of ±60° incident angle, and the utilization rate is increased by 50% compared with the flat structure. The gradient refractive index material reduces interface reflection and eliminates ghosting.

[0044] This embodiment achieves ultra-low reflectivity by focusing the path through a concave lens, and combines the matching design of the shading unit 112 to reduce the display brightness loss by less than 2%, which is suitable for outdoor high-brightness display scenes.

[0045] In this embodiment, if Figure 1-Figure 4 As shown, the anti-reflection structure layer 1 realizes efficient control and absorption of ambient light through the coordinated design of multi-layer reflection units and shading units 112, combined with the micro-prism structure and the law of total reflection.

[0046] The total reflection layer 12 includes, for example, a first transparent body 121 and two second transparent bodies 122, the two second transparent bodies 122 are symmetrically arranged on both sides of the first transparent body 121 along the thickness direction of the display panel, and the first transparent body 121 and the two second transparent bodies 122 are spliced ​​and connected. The first transparent body 121 and the second transparent body 122 are both triangular transparent structures, so that the total reflection layer 12 forms a sandwich splicing design of the second transparent body 122, the first transparent body 121 and the second transparent body 122.

[0047] The first transparent body 121 is located in the middle layer, and is made of a low refractive index transparent material (such as magnesium fluoride, n2=1.38) or a liquid transparent medium (such as a refractive index matching liquid, n2=1.35-1.40), and has a thickness T1=50-100 nm.

[0048] The second transparent body 122 is symmetrically distributed on both sides of the first transparent body 121 , and is made of a transparent material with a high refractive index (such as silicon nitride, n1=1.9-2.0), with a thickness T2=80-120 nm.

[0049] The refractive index relationship between the first transparent body 121 and the second transparent body 122 satisfies n1>n2 (in this embodiment, n1=1.414n2), ensuring that the light is totally reflected at the interface between the first transparent body 121 and the second transparent body 122.

[0050] The light refracted by the refraction unit 111 passes through the first transparent body 121 and reaches one of the second transparent bodies 122 , and is reflected by the second transparent body 122 to the corresponding light shielding unit 112 .

[0051] The orthographic projection area of ​​the second transparent body 122 coincides with the orthographic projection area of ​​the shading unit 112 , and the height of the second transparent body 122 is the same as the width of the plane where the shading unit 112 is located.

[0052] That is, the anti-reflection film layer 11 is composed of a refraction unit 111 and a shading unit 112, which have the same width, effectively reducing reflected light. The ambient light enters the total reflection layer 12 through the refraction unit 111, and enters the shading unit 112 after total reflection, thereby achieving anti-reflection. The orthographic projection of the shading unit 112 completely overlaps with the second transparent body 122, ensuring that the reflected light is completely absorbed. The second transparent body 122 is designed as an isosceles right triangle, with a right-angled side width of W, and the hypotenuse surface is a total reflection surface, forming a 45° angle with the first transparent body 121.

[0053] Light is incident on the hypotenuse of the micro - prism at an angle θ < arcsin(n1 / n2). After two - stage guiding, collimated light is formed and perpendicularly passes through the first transparent body 121. When the collimated light reaches the first transparent body 121, the light is guided to the second transparent body 122. The incident angle is 45°, and total internal reflection occurs. The second transparent body 122 reflects the light to the corresponding light - shielding unit 112, and after absorption, the reflection is eliminated. Light is directly irradiated onto the light - shielding unit 112 at an angle θ ≥ arcsin(n1 / n2), and after multiple diffuse reflections, it is absorbed to avoid entering the interior of the display panel. The anti - reflection film layer 11 and the total - reflection layer 12 are arranged in combination, which can greatly improve the reflection degree of ambient light.

[0054] In this embodiment, through the collaborative design of the total - reflection layer 12 with refractive - index matching and the micro - prism - light - shielding unit 112, the average reflectivity is < 0.4% in a specific wavelength band, while ensuring the display brightness and color purity. Compared with traditional anti - reflection films, its reflectivity is reduced by more than 60%, and no additional color - compensation layer is required, significantly simplifying the optical structure of the display panel.

[0055] In this embodiment, as Figure 1-Figure 4 shown, the display panel adopts a multi - layer composite structure. The display panel further includes a display structure layer 2 and a backlight structure layer 3. The anti - reflection structure layer 1, the display structure layer 2, and the backlight structure layer 3 are sequentially arranged from top to bottom. That is, the display structure layer 2 is stacked above the backlight structure layer 3, and the anti - reflection structure layer 1 is stacked on the display structure layer 2.

[0056] The display structure layer 2 specifically adopts a (Liquid Crystal Display, abbreviated as LCD) structure, that is, a flat panel display. This structure can realize the display control of images based on the electro - optical effect of liquid crystals.

[0057] The backlight structure layer 3 adopts a backlight structure, and its function is to provide a uniform surface light source for the display structure layer 2 to ensure that the display screen has good brightness and uniformity.

[0058] In this embodiment, as Figure 1-Figure 4 shown, the light - shielding unit 112 is provided in the anti - reflection structure layer 1, and the light - shielding portion 21 is provided in the display structure layer 2. The orthographic projection area of the light - shielding portion 21 coincides with the orthographic projection area of the light - shielding unit 112. The main purpose of this design is to avoid the light - shielding unit 112 from blocking the display light and ensure the normal emission of the display light.

[0059] Since the shading unit 112 itself will have a certain impact on the emission of the display light, in order to reduce its absorption of the display light, the shading unit 112 is designed to be spaced and correspond one-to-one with the shading portion 21 in the display structure layer 2 below. At the same time, the width of the shading unit 112 and the shading portion 21 are consistent. Through this design, it can be ensured that the display light is emitted only through the microprism area, effectively reducing the attenuation of the display brightness by the light-absorbing material, and having little effect on the transmittance of the display itself, and will not affect the normal light emission and display of the display panel, thereby improving the display effect and brightness uniformity of the display panel.

[0060] The anti-reflection structure layer 1 further includes a total reflection layer 12 , which can reflect collimated light, which is then absorbed by the shading unit 112 and cannot be emitted to the display structure layer 2 , thereby greatly improving the reflection degree of external ambient light.

[0061] The display panel of this embodiment achieves the purpose of reducing reflection, improving display brightness and light utilization efficiency through the coordinated design and optimization of each layer structure, and has good display effect and performance.

[0062] like Figure 1-Figure 4 As shown, the present application also provides a display device, including a liquid crystal box such as the display panel in the above embodiment, and the display panel is stacked on the liquid crystal box.

[0063] In the actual assembly process, the display panel and the liquid crystal box are precisely aligned and bonded to ensure that the various layers of the display panel and the liquid crystal box can work together. The backlight structure layer 3 of the display panel provides light for the liquid crystal box, the display structure layer 2 realizes the display of the image under the control of the liquid crystal box, and the anti-reflection structure layer 1 reduces the reflection of external light and improves the contrast and clarity of the displayed image.

[0064] Through this stacking arrangement, the display device can fully utilize the performance advantages of the display panel to achieve high-quality image display. At the same time, the close combination of the display panel and the liquid crystal box also ensures the overall stability and reliability of the display device, providing users with a good visual experience.

[0065] The display device of the present application achieves the purpose of reducing reflection, improving display brightness and light utilization efficiency through reasonable structural design and stacking arrangement, and has good display effect and performance.

[0066] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0067] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0068] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A display panel, characterized in that: The invention comprises an anti-reflection structural layer, wherein the anti-reflection structural layer comprises: An anti-reflection film layer comprises a plurality of refraction units and a plurality of light shielding units arranged in an array and alternately distributed; and A total reflection layer, part of the ambient light is guided by the refraction unit, and after reaching the total reflection layer, is reflected to the corresponding shading unit; the remaining ambient light is absorbed by the shading unit.

2. The display panel according to claim 1, characterized in that: The refraction unit comprises a first light guiding surface and a second light guiding surface, wherein a first preset angle is formed between the first light guiding surface and the plane where the total reflection layer is located, and a second preset angle is formed between the second light guiding surface and the plane where the total reflection layer is located; After reaching the first light guiding surface, part of the ambient light is refracted to the second light guiding surface, and is reflected by the second light guiding surface to the total reflection layer.

3. The display panel according to claim 2, characterized in that: The first preset angle and / or the second preset angle ranges from 45° to 75°.

4. The display panel according to claim 1, characterized in that: The refraction unit comprises a third refraction surface, and the third refraction surface is a curved surface structure concave toward the total reflection layer.

5. The display panel according to claim 1, characterized in that: The total reflection layer includes a first transparent body and two second transparent bodies, and the two second transparent bodies are symmetrically arranged on both sides of the first transparent body; The light refracted by the refraction unit passes through the first transparent body and reaches one of the second transparent bodies, and is reflected by the second transparent body to the other second transparent body, and is reflected by the second transparent body to the corresponding shading unit.

6. The display panel according to claim 5, characterized in that: The first transparent body is made of a solid transparent material; or, the first transparent body is made of a liquid transparent material filled between two second transparent bodies.

7. The display panel according to claim 5, characterized in that: The refractive index of the first transparent body is greater than the refractive index of the second transparent body.

8. The display panel according to claim 5, characterized in that: The orthographic projection area of ​​the second transparent body coincides with the orthographic projection area of ​​the shading unit; the height of the second transparent body is the same as the width of the plane where the shading unit is located.

9. The display panel according to claim 1, characterized in that: The shading unit is a black matrix structure.

10. The display panel according to claim 1, characterized in that: The display panel comprises a backlight structure layer and a display structure layer, wherein the display structure layer is stacked on the backlight structure layer, and the anti-reflection structure layer is stacked on the display structure layer.

11. The display panel according to claim 10, characterized in that: The display structure layer is provided with a shading portion, and the orthographic projection area of ​​the shading portion coincides with the orthographic projection area of ​​the shading unit.

12. A display device, characterized in that: A display panel comprising a liquid crystal box as claimed in any one of claims 1 to 11, wherein the display panel is stacked on the liquid crystal box.

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