Display panel and display device
By adopting a reflective structure and a refractive index difference design of a transparent solution in electronic paper and utilizing the principle of frustrated total internal reflection, double-sided display of electronic paper is achieved, solving the problem of low applicability and enhancing display brightness and applicable scenarios.
Patent Information
- Application Number
- CN202511065498.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-30
- Publication Date
- 2025-09-23
AI Technical Summary
The application scenarios of existing electronic paper are limited and its applicability is not high, especially in occasions such as outdoor billboards that need to change the display surface.
A reflective structure design is adopted, which utilizes the refractive index difference of transparent solutions and the principle of frustrated total internal reflection to achieve reflection and refraction of light between different substrates. Combined with the movable transparent solution position exchange, double-sided display is achieved.
The applicability of the display panel is improved, double-sided display is achieved, display brightness is enhanced, and it can be used in scenes such as outdoor shopping mall glass curtain walls without affecting indoor privacy.
Smart Images
Figure CN120686512A_ABST
Abstract
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] E-paper, a reflective display, displays content by reflecting natural light. The stronger the natural light, the clearer the display, offering some protection for the human eye, which has attracted considerable attention. As a display that mimics paper, e-paper offers advantages such as lightness, simplicity of manufacturing, low power consumption, eye protection, and, compared to paper, reusability, thus creating a promising market.
[0003] However, general electronic paper can only display on one side. In some occasions, such as outdoor billboards, the display surface may be changed as needed, which brings inconvenience to the use of traditional electronic paper.
[0004] In short, the current e-paper has limited application scenarios and is not very applicable. Summary of the Invention
[0005] In view of this, embodiments of the present application provide a display panel and a display device to solve the technical problems of current electronic paper having limited application scenarios and low applicability.
[0006] In a first aspect, an embodiment of the present application provides a reflective structure, comprising a first substrate, an intermediate layer, and a second substrate arranged in sequence, wherein the intermediate layer comprises a plurality of sub-pixel units arranged in parallel, wherein the sub-pixel units comprise:
[0007] a reflective structure disposed between the first substrate and the second substrate, with two ends of the reflective structure abutting against the first substrate and the second substrate, forming a first space between the reflective structure and the first substrate, and forming a second space between the reflective structure and the second substrate;
[0008] The first space is filled with a first transparent solution, and the second space is filled with a second transparent solution. The first transparent solution and the second transparent solution have different densities and are immiscible with each other. The positions of the first transparent solution and the second transparent solution are interchangeable.
[0009] The refractive index of the first transparent solution is n1, the refractive index of the reflective structure is n2, and the refractive index of the second transparent solution is n3, which satisfy the following relationship:
[0010] n1<n2=n3。
[0011] In some embodiments, the first transparent solution and the second transparent solution are movable and fill the first space and the second space;
[0012] When the second transparent solution is filled in the second space and the first transparent solution is filled in the first space, the display panel uses the second substrate as the display front;
[0013] When the second transparent solution fills the first space and the first transparent solution fills the second space, the display panel uses the first substrate as a display front.
[0014] In some embodiments, the shape of the reflective structure includes one of a hemisphere, a cone, or a pyramid.
[0015] In some embodiments, channels for the first transparent solution and the second transparent solution to circulate and move are formed between adjacent reflective structures.
[0016] In some embodiments, the first transparent solution is a colorless transparent solution, and the first transparent solution comprises at least one of water, methanol, ethanol or propanol;
[0017] In some embodiments, the second transparent solution is a color resist solution, the color resist solution includes a transparent color ink, and the color of the transparent color ink corresponds to the color of the sub-pixel unit.
[0018] In some embodiments, the first transparent solution is positively charged, and the second transparent solution is uncharged or negatively charged;
[0019] Alternatively, the first transparent solution is negatively charged, and the second transparent solution is uncharged or positively charged;
[0020] Alternatively, the first transparent solution is uncharged, and the second transparent solution is negatively charged or positively charged.
[0021] In some embodiments, the first substrate includes a first glass layer and a first insulating layer disposed on the first glass layer.
[0022] The second substrate includes a second glass layer, a common electrode layer, a second insulating layer, a third insulating layer, a pixel electrode layer, and a fourth insulating layer which are sequentially arranged.
[0023] In some embodiments, the display panel further includes an integrated circuit and a pixel circuit, and the integrated circuit charges the common electrode layer and the pixel electrode layer through the pixel circuit to form an electric field to drive the charged first transparent solution and / or the second transparent solution, thereby realizing the display of the screen image and the display of the black screen.
[0024] In some embodiments, the reflective structure is a hollow structure, and the reflective structure is filled with a medium having the same refractive index as the reflective structure but a different material;
[0025] Alternatively, the reflective structure is a solid structure.
[0026] In a second aspect, an embodiment of the present application provides a display device comprising the display panel described in the first aspect.
[0027] The display panel and display device provided by the embodiments of the present application have the following beneficial effects:
[0028] Due to the presence of the reflective structure, the display panel utilizes the principle of "frustrated total internal reflection," which states that when light enters a medium with a higher refractive index into a medium with a lower refractive index, if the incident angle is greater than a critical angle, the refracted light disappears, and all incident light is reflected without entering the medium with a lower refractive index. The refractive index of the first transparent solution is n1, the refractive index of the reflective structure is n2, and the refractive index of the second transparent solution is n3, where n1 < n2 = n3. The light paths include: light entering from one side of the first substrate passes through the first transparent solution in the first space, is refracted by the reflective structure, and then is directly emitted from the second transparent solution and passes through the second substrate, thereby rendering one side of the first substrate black. Light entering from the second substrate passes through the second transparent solution and the reflective structure, and when it reaches the interface with the first transparent solution in the first space, undergoes frustrated total internal reflection, and then is emitted from the second substrate, thereby displaying the image.
[0029] Since the first transparent solution and the second transparent solution can exchange positions, a switching display can be achieved, which greatly improves the applicability of the display panel.
[0030] It should be noted that, because the first substrate is translucent, ambient light also enters it, increasing the luminous flux. The overall brightness is composed of light reflected from the second substrate and incident light from the first substrate, further enhancing the display brightness of the display panel and improving its display effect. This solution is suitable for scenes such as outdoor shopping mall glass curtain walls. Without affecting the observation of the outdoor environment indoors, people outside can see the advertisement without seeing the indoor environment. At the same time, people inside can also see the content displayed by the display panel, achieving the effect of double-sided display while ensuring privacy indoors. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0032] Figure 1 is a schematic structural diagram of a display panel provided in an embodiment of the present application;
[0033] Figure 2 yes Figure 1 Light indication Figure 1 ;
[0034] Figure 3 yes Figure 1 Light indication Figure 2 ;
[0035] Figure 4 yes Figure 1 Top view of the middle reflective structure;
[0036] Figure 5 yes Figure 1 Schematic diagram of light reflection of the reflective structure in the figure;
[0037] Figure 6 is a structural diagram of a display panel provided by another embodiment of the present application;
[0038] Figure 7 is a structural schematic diagram of the first substrate provided in an embodiment of the present application;
[0039] Figure 8 It is a structural schematic diagram of the second substrate provided in an embodiment of the present application.
[0040] Among them, the figure numbers are:
[0041] 10. First substrate; 11. First glass layer; 12. First insulating layer;
[0042] 20, middle layer; 200, sub-pixel unit; 21, reflective structure; 210, first space; 211, second space; 212, channel;
[0043] 30. Second substrate; 31. Second glass layer; 32. Common electrode layer; 33. Second insulating layer; 34. Third insulating layer; 35. Pixel electrode layer; 36. Signal line; 37. Scan line; 38. Data line; 39. Semiconductor layer; 40. Fourth insulating layer. DETAILED DESCRIPTION
[0044] In the following description, specific details such as specific system structures and technologies are provided for illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the embodiments of the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the embodiments of the present application.
[0045] It should also be understood that the term "and / or" used in the description of the embodiments of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.
[0046] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0048] In addition, in the description of the embodiments of the present application and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.
[0049] References to "some embodiments" or "some embodiments" described in the specification of the embodiments of the present application mean that one or more embodiments of the embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. "Multiple" refers to two or more.
[0050] First, as Figures 1 to 8 As shown, an embodiment of the present application provides a display panel, including a first substrate 10, an intermediate layer 20, and a second substrate 30 arranged in sequence, wherein the intermediate layer 20 includes a plurality of sub-pixel units 200 arranged in parallel, wherein the sub-pixel unit 200 includes:
[0051] The reflective structure 21 is disposed between the first substrate 10 and the second substrate 30. Two ends of the reflective structure 21 are in contact with the first substrate 10 and the second substrate 30. A first space 210 is formed between the reflective structure 21 and the first substrate 10, and a second space 211 is formed between the reflective structure 21 and the second substrate 30.
[0052] The first space 210 is filled with a first transparent solution, and the second space 211 is filled with a second transparent solution. The first transparent solution and the second transparent solution have different densities and are immiscible with each other. The positions of the first transparent solution and the second transparent solution can be exchanged.
[0053] The refractive index of the first transparent solution is n1, the refractive index of the reflective structure 21 is n2, and the refractive index of the second transparent solution is n3, which satisfy the following relationship:
[0054] n1<n2=n3。
[0055] The display panel provided in the embodiment of the present application utilizes the principle of "frustrated total internal reflection", that is, when light enters a medium with a higher refractive index into a medium with a lower refractive index, if the incident angle is greater than a certain critical angle, the refracted light will disappear, and all the incident light will be reflected without entering the medium with a lower refractive index; the refractive index of the first transparent solution is n1, the refractive index of the reflective structure 21 is n2, and the refractive index of the second transparent solution is n3, n1 < n2 = n3; the direction of the light is as follows: the light incident from one side of the first substrate 10 passes through the first transparent solution in the first space 210, and the refractive index of the second transparent solution is n3. When the light enters from the side of the second substrate 30, it passes through the second transparent solution and one side surface of the reflective structure 21, and when it reaches the interface between the first space 210 and the first transparent solution, it undergoes frustrated total internal reflection and is then emitted from the side of the second substrate 30, thereby realizing the display of the picture (the second substrate 30 serves as the front of the display panel).
[0056] In practice, sub-pixel unit 200 includes R / G / B, i.e., red, green, and blue, as the three primary colors of light. Mixing these three primary colors in varying proportions and intensities can produce a variety of natural color variations. Mixing these three primary colors in varying proportions can produce white light.
[0057] It should be noted that, in combination with the characteristics of frustrated total internal reflection, the display panel provided in the embodiment of the present application can transmit light on the side having the reflective structure 21 and the second transparent solution, while the opposite side can reflect light. In one embodiment of the present application, the first substrate 10 can serve as the back of the display panel, and the second substrate 30 can serve as the front of the display panel. In other embodiments, since the positions of the first transparent solution and the second transparent solution can be exchanged, the first substrate 10 can also serve as the front of the display panel, and the second substrate 30 can serve as the back of the display panel. In this way, in specific application scenarios, adaptive adjustments can be made to the front and back of the actual panel.
[0058] like Figure 2 As shown, when the ambient light is incident from the back side (the first substrate 10), it will pass through the screen and the first transparent solution and the second transparent solution, and will be emitted from the front side (the second substrate 30), and will not be reflected back to the back side. In combination with the fact that the incident light from the front side (the first substrate 10) will be reflected back to the front side and will not be emitted from the back side, a dark image will be displayed on the back side; as shown Figure 3 As shown, when ambient light is incident from the front, it will be reflected by the reflective structure 21 to display the picture; at the same time, since its back side (first substrate 10) is light-transmissive, ambient light can also be incident on the back side, increasing the luminous flux. The overall brightness is composed of the front reflected light and the back incident light, which further enhances the display brightness of the electronic paper and improves its display effect. The specific principle is as follows Figure 5 As shown, according to the reflection angle formula, when the refractive index of the optically rarefying medium (n x ) is smaller, the refractive index of the denser medium (n y ) is larger, the critical angle of total reflection (θ i ) is larger, the more likely it is to have total reflection. The formula for the critical angle is: θ i =arcsin(n x / n y ).
[0059] In applications, such as Figures 1 to 6 As shown, the first substrate 10 and the second substrate 30 can be interchanged. That is, the first substrate 10 can serve as either the front or back of the display panel (electronic paper). Accordingly, when the first substrate 10 serves as the front of the display panel, the second substrate 30 serves as the back. Similarly, when the first substrate 10 serves as the back of the display panel, the second substrate 30 serves as the front. Similarly, the first space 210 and the second space 211 can be interchanged. In applications, an edge-lit backlight can also be added to enable display at night.
[0060] In applications where only a black and white display is required or the color of the pattern is not a requirement (because the colors of the patterns on the front and back are opposite when displayed), it can be used as a double-sided display. Specifically, because the display is black and white, color is not a big requirement for the image. So, for example, if the front side has black text on a white background, the back side will have white text on a black background. Because there are only two liquids with different refractive indices, they will cause total reflection or refraction on different surfaces, thus forming a white or black image. So for a pixel, its front side is black, and its back side is white.
[0061] In some embodiments, as Figures 1 to 6 As shown, the first transparent solution and the second transparent solution can move and fill the first space 210 and the second space 211;
[0062] When the second transparent solution is filled in the second space 211 and the first transparent solution is filled in the first space 210 , the display panel uses the second substrate 30 as the display front;
[0063] When the second transparent solution fills the first space 210 and the first transparent solution fills the second space 211, the display panel uses the first substrate 10 as the display front. In this way, the front and back sides of the display panel can be selected according to actual conditions, greatly improving the applicability of the display panel. In some embodiments, the display panel glass includes but is not limited to electronic paper and large displays.
[0064] In some embodiments, the first transparent solution is a colorless transparent solution, and the first transparent solution includes at least one of water, methanol, ethanol, or propanol. In a preferred embodiment, water is used as the first transparent solution and is filled in the first space 210. Using water as a colorless transparent solution is safer and less expensive.
[0065] In some embodiments, the second transparent solution is a color resist solution that includes a transparent colored ink, and the color of the transparent colored ink corresponds to the color of the sub-pixel unit 200. That is, the second transparent solution in the reflective structure 21 of the red pixel unit is a red transparent ink, the second transparent solution in the reflective structure 21 of the green pixel unit is a green transparent ink, and the second transparent solution in the reflective structure 21 of the blue pixel unit is a blue transparent ink. In this way, light of corresponding colors can be emitted, and then combined to display color, white, etc.
[0066] In some embodiments, as Figure 1As shown, the shape of the reflective structure 21 includes one of a hemispherical, conical or pyramidal shape. In a preferred embodiment, the shape of the reflective structure 21 is hemispherical. This is because the hemispherical reflective structure 21 has more reflective surfaces. In addition, as long as the incident light passes through the center of the circle, it is incident and reflected perpendicularly to the reflective surface, ensuring that the light can return in the original direction, making the reflected light more uniform. Like a cone, most light will not be incident and reflected perpendicularly to the reflective surface. It will be incident from one direction and reflected from another direction, and the display will reflect light unevenly. For example, in a pyramid, because there are sharp corners, the reflection effect there will be different from other places, making the picture uneven. Therefore, the hemispherical reflective structure 21 can improve the utilization rate of light and can make the display effect better.
[0067] In some embodiments, the reflective structure 21 is a hollow structure filled with a medium having the same refractive index as the reflective structure 21 but a different material, such as a color resist solution. In other embodiments, the reflective structure 21 is a solid structure. This can effectively improve the overall stability of the display panel.
[0068] In some embodiments, channels 212 are formed between adjacent reflective structures 21 for the first transparent solution and the second transparent solution to circulate and move. It should be noted that the reflective structures 21 are generally hemispherical, that is, the two ends of the reflective structures 21 that contact the first substrate 10 and the second substrate 30 are spherical, so the adjacent reflective structures 21 will form the following channels: Figure 4 As shown in the channel 212, the first transparent solution and the second transparent solution can be moved from the channel 212 to achieve position exchange.
[0069] In some embodiments, the display panel further includes an integrated circuit and a pixel circuit. The integrated circuit charges the common electrode layer and the pixel electrode layer through the pixel circuit to form an electric field to drive the first transparent solution and the second transparent solution, thereby realizing the display of the screen image and the display of the black screen.
[0070] In some embodiments, the first transparent solution is positively charged, and the second transparent solution is uncharged or negatively charged. In some embodiments, the first transparent solution is negatively charged, and the second transparent solution is uncharged or positively charged. In some embodiments, the first transparent solution is uncharged, and the second transparent solution is negatively charged or positively charged. In general, the first transparent solution and the second transparent solution can either have opposite charges, so that the display panel can form an electric field to drive them, thereby achieving the purpose of exchanging positions; or one of the first transparent solutions can be charged and the other uncharged, so that by driving one of the solutions to move, the other solution is forced to move, thereby achieving the purpose of exchanging positions.
[0071] In applications, such as Figure 6As shown, for example, if the second transparent solution (the color resist solution) carries a positive charge, when a black screen is displayed, a negative signal is applied to the pixel electrode layer below, attracting the positively charged second transparent solution. A positive signal is applied to the common electrode layer above, repelling the positively charged second transparent solution, causing the charged color resist solution to move downward overall. Because the first and second transparent solutions are immiscible, the electric field forces the first solution to be displaced by the second solution, causing it to flow upward through the channel. Eventually, the two solutions reach equilibrium and cease migration.
[0072] In some embodiments, as Figure 7 and Figure 8 As shown, the first substrate 10 includes a first glass layer 11 and a first insulating layer 12 provided on the first glass layer 11.
[0073] The second substrate 30 includes a second glass layer 31 , a common electrode layer 32 , a second insulating layer 33 , a third insulating layer 34 , a pixel electrode layer 35 and a fourth insulating layer 40 , which are sequentially arranged.
[0074] In the application, the second substrate 30 is also provided with an M1com signal line 36, an M1 scan line 37, an M2 data line 38 and a semiconductor layer 39. The positional relationship of the above components is conventional and will not be described in detail here. Figure 8 As shown. M1com signal line 36 is a common signal line related to M1, which is used to ensure that all related pixels or modules operate at the same potential to maintain the stability and consistency of the display. M1 scan line 37: A scan line related to M1, used to activate pixels in row (or column) order. The scan line is usually controlled by a scan driver and scans according to a certain timing and frequency to achieve row-by-row (or column-by-column) display of the image. M2 data line 38: A data line related to M2, used to transmit display data related to M2. The data line is usually controlled by a source driver to transmit image data from the processor to the pixel or module. These data can be color values, brightness values or other display-related parameters.
[0075] In application, a fourth insulating layer 40 having the same function as the first insulating layer 12 is further provided on the pixel electrode layer 35 . Both the first insulating layer 12 and the fourth insulating layer 40 are hydrophobic insulating layers, which can effectively prevent water from entering the display panel.
[0076] In a second aspect, an embodiment of the present application provides a display device comprising the above-mentioned display panel.
[0077] A display device provided in an embodiment of the present application has all the beneficial effects of the display panel described in the first aspect and realizes a transparent double-sided display effect.
[0078] In applications, display devices include but are not limited to electronic paper devices, electronic readers, large displays, etc.
[0079] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.
[0080] The display panel and display device provided by the embodiments of the present application have the following beneficial effects:
[0081] (1) The hemispherical reflective structure 21 of the intermediate layer 20 is used to fully reflect light, so that a pattern can be displayed on the first substrate 10 or the second substrate 30 using external light without the need for an additional reflective film layer, thereby reducing manufacturing costs and processes;
[0082] (2) By utilizing the hemispherical reflective structure 21 of the intermediate layer 20, light on one side of the first substrate 10 is reflected by the special structure composed of the color resist solution and the reflective structure 21, so that no light is emitted from this side, thereby forming a black state;
[0083] (3) The display panel and display device provided in the embodiments of the present application can switch between displaying the front and back sides (i.e., the first substrate 10 as the front side or the second substrate 30 as the front side) according to the actual application scenario, and can also realize double-sided display without special requirements, thereby expanding its functional application range;
[0084] (4) At the same time, since the first substrate 10 and the second substrate 30 are light-transmissive, the first substrate 10 can also receive ambient light, thereby increasing the luminous flux. The overall brightness is composed of the front reflected light and the back incident light, which further enhances the display brightness of the electronic paper and improves its display effect.
[0085] (5) The display panel and display device provided in the embodiments of the present application can be applied to scenes such as glass curtain walls of outdoor shopping malls. Without affecting the observation of outdoor conditions indoors, people outdoors cannot see the indoor conditions when seeing advertisements, and people indoors can also see the contents displayed on the electronic paper, thus achieving a double-sided display effect while ensuring indoor privacy.
[0086] The above-described embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application are described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the embodiments of the present application, and should all be included in the protection scope of the embodiments of the present application.
Claims
1. A display panel, characterized in that: The invention comprises a first substrate, an intermediate layer and a second substrate arranged in sequence, wherein the intermediate layer comprises a plurality of sub-pixel units arranged in parallel, wherein the sub-pixel units comprise: a reflective structure disposed between the first substrate and the second substrate, with two ends of the reflective structure abutting against the first substrate and the second substrate, forming a first space between the reflective structure and the first substrate, and forming a second space between the reflective structure and the second substrate; The first space is filled with a first transparent solution, and the second space is filled with a second transparent solution. The first transparent solution and the second transparent solution have different densities and are immiscible with each other. The positions of the first transparent solution and the second transparent solution are interchangeable. The refractive index of the first transparent solution is n1, the refractive index of the reflective structure is n2, and the refractive index of the second transparent solution is n3, which satisfy the following relationship: n1<n2=n3。 2. The display panel according to claim 1, wherein The first transparent solution and the second transparent solution are movable and fill the first space and the second space; When the second transparent solution is filled in the second space and the first transparent solution is filled in the first space, the display panel uses the second substrate as the display front; When the second transparent solution fills the first space and the first transparent solution fills the second space, the display panel uses the first substrate as a display front.
3. The display panel according to claim 1, wherein The shape of the reflective structure includes one of a hemispherical shape, a conical shape or a pyramidal shape.
4. The display panel according to claim 1, wherein: Channels for the first transparent solution and the second transparent solution to circulate and move are formed between adjacent reflective structures.
5. The display panel according to claim 1, wherein The first transparent solution is a colorless transparent solution, and the first transparent solution includes at least one of water, methanol, ethanol or propanol; And / or, the second transparent solution is a color resist solution, the color resist solution includes a transparent color ink, and the color of the transparent color ink corresponds to the color of the sub-pixel unit.
6. The display panel according to claim 5, wherein: The first transparent solution is positively charged, and the second transparent solution is uncharged or negatively charged; Alternatively, the first transparent solution is negatively charged, and the second transparent solution is uncharged or positively charged; Alternatively, the first transparent solution is uncharged, and the second transparent solution is negatively charged or positively charged.
7. The display panel according to claim 1, wherein: The first substrate includes a first glass layer and a first insulating layer provided on the first glass layer. The second substrate includes a second glass layer, a common electrode layer, a second insulating layer, a third insulating layer, a pixel electrode layer, and a fourth insulating layer which are sequentially arranged.
8. The display panel according to claim 7, wherein: The display panel also includes an integrated circuit and a pixel circuit. The integrated circuit charges the common electrode layer and the pixel electrode layer through the pixel circuit, forming an electric field to drive the charged first transparent solution and / or the second transparent solution, thereby realizing the display of the screen image and the display of the black screen.
9. The display panel according to any one of claims 1 to 8, wherein: The reflective structure is a hollow structure, and the reflective structure is filled with a medium having the same refractive index as the reflective structure but a different material; Alternatively, the reflective structure is a solid structure.
10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.