Display panel and manufacturing method thereof, and display device

Abstract

The present application provides a display panel and a method for manufacturing the same, and a display device, the display panel comprising: a plurality of display units arranged at intervals on the substrate; wherein each of the display units comprises at least one pixel; a reflective layer located on the substrate and arranged between any two adjacent display units; a scattering layer arranged on the side of the reflective layer away from the substrate; wherein the scattering layer is at least partially transparent, and the orthographic projection of the scattering layer on the substrate at least covers a portion of the orthographic projection of the reflective layer on the substrate. The laser light incident on the display panel and irradiated on the scattering layer is first scattered by the scattering layer, and the scattered laser light is then reflected by the reflective layer, thereby increasing the diffuse reflection of the laser light at each viewing angle, forming a Lambertian-like light spot, which is visible at each viewing angle, and realizing full viewing angle visibility of the laser pen on the display panel.

Description

Technical Field

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

[0002] At present, in various teaching, lecture or conference occasions, projectors are usually used to project projection materials onto screens and walls, but projectors have problems with low contrast and poor image quality. With the widespread application of large-size displays, liquid crystal display panels (LCD, Liquid Crystal Display) and organic light-emitting diodes (Organic Light-Emitting Diode, OLED), as well as micro light-emitting diodes (Micro Light Emitting Diode, Micro LED) and sub-millimeter light-emitting diodes (Mini Light Emitting Diode, mini LED) technologies are gradually being applied to various electronic devices, including conference display equipment.

[0003] These display devices have the advantages of high contrast and good image quality. However, when using a monitor for direct display, since the monitor has a self-luminous structure, most of the projection light of the laser pen will pass through the monitor. The laser generated by the laser pen is difficult to display on the monitor or is not clear, affecting the user experience. Summary of the invention

[0004] In view of the above problems, the present application provides a display panel and a method for manufacturing the same, and a display device, which solve the technical problem in the prior art that the laser pen is difficult to display on the display panel or the display is unclear.

[0005] In a first aspect, the present application provides a display panel, comprising:

[0006] substrate substrate;

[0007] A plurality of display units are arranged on the substrate at intervals; wherein each of the display units includes at least one pixel;

[0008] A reflective layer located on the base substrate and arranged between any two adjacent display units;

[0009] A scattering layer disposed on a side of the reflective layer away from the base substrate;

[0010] The scattering layer is at least partially light-transmissive, and the orthographic projection of the scattering layer on the base substrate at least partially covers the orthographic projection of the reflective layer on the base substrate.

[0011] In some embodiments, the display panel further includes:

[0012] A black matrix layer disposed between the reflective layer and the base substrate;

[0013] Wherein, the orthographic projection of the black matrix layer on the base substrate at least covers a portion of the orthographic projection of the reflective layer on the base substrate.

[0014] In some embodiments, the display panel further includes:

[0015] A light-transmitting protective layer covers the display unit and the scattering layer.

[0016] In some embodiments, in the above display panel, the reflective layer includes a plurality of first dielectric layers and a plurality of second dielectric layers alternately stacked in a direction from the base substrate toward the scattering layer;

[0017] Wherein, the refractive index of the first medium layer is greater than the refractive index of the second medium layer.

[0018] In some embodiments, in the above display panel, the optical thickness of the first dielectric layer is one quarter of the wavelength of the light to be reflected in the first dielectric layer;

[0019] The optical thickness of the second dielectric layer is one quarter of the wavelength of the light to be reflected in the second dielectric layer.

[0020] In some embodiments, in the above display panel, the material of the first dielectric layer includes polyvinyl pyrrolidone and zirconium oxide.

[0021] In some embodiments, in the display panel, the content of the polyvinyl pyrrolidone in the multiple first dielectric layers is different.

[0022] In some embodiments, in the above display panel, the material of the second dielectric layer includes silicon dioxide.

[0023] In some embodiments, in the above display panel, the scattering layer includes a plurality of scattering particles.

[0024] In some embodiments, in the above display panel, the particle size of the scattering particles is nanometer level.

[0025] In a second aspect, the present application provides a method for preparing a display panel, comprising:

[0026] providing a substrate base plate;

[0027] A plurality of display units are formed on the substrate and are arranged at intervals; wherein each of the display units includes at least one pixel;

[0028] forming a reflective layer on the base substrate between any two adjacent display units;

[0029] forming a scattering layer on a side of the reflective layer away from the substrate;

[0030] The scattering layer is at least partially light-transmissive, and the orthographic projection of the scattering layer on the base substrate at least partially covers the orthographic projection of the reflective layer on the base substrate.

[0031] In some embodiments, in the method for manufacturing the display panel, forming a reflective layer between any two adjacent display units on the base substrate comprises the following steps:

[0032] Forming a plurality of first medium layers and second medium layers alternately stacked and arranged in a direction from the base substrate to the scattering layer between any two adjacent display units on the base substrate;

[0033] Wherein, the refractive index of the first medium layer is greater than the refractive index of the second medium layer.

[0034] In a third aspect, the present application provides a display device, comprising a display panel as described in any one of the first aspects or a display panel prepared using the preparation method described in the second aspect.

[0035] By adopting the above technical solution, at least the following technical effects can be achieved:

[0036] The present application provides a display panel and a method for manufacturing the same, and a display device, the display panel comprising: a plurality of display units arranged at intervals on the substrate; wherein each of the display units comprises at least one pixel; a reflective layer located on the substrate and arranged between any two adjacent display units; a scattering layer arranged on the side of the reflective layer away from the substrate; wherein the scattering layer is at least partially transparent, and the orthographic projection of the scattering layer on the substrate at least covers a portion of the orthographic projection of the reflective layer on the substrate. The laser light incident on the display panel and irradiated on the scattering layer is first scattered by the scattering layer, and the scattered laser light is then reflected by the reflective layer, thereby increasing the diffuse reflection of the laser light at each viewing angle, forming a Lambertian-like light spot, which is visible at each viewing angle, and realizing full viewing angle visibility of the laser pen on the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application but do not constitute a limitation to the present application. In the accompanying drawings:

[0038] Figure 1is a schematic cross-sectional structure diagram of a display panel shown in an exemplary embodiment of the present application;

[0039] Figure 2 is a schematic diagram of reflection of a laser directly incident on a reflective layer, shown in an exemplary embodiment of the present application;

[0040] Figure 3 is a reflection schematic diagram of a laser incident on the above-mentioned display panel shown in an exemplary embodiment of the present application;

[0041] Figure 4 is a schematic cross-sectional structure diagram of another display panel shown in an exemplary embodiment of the present application;

[0042] Figure 5 is a schematic cross-sectional structure diagram of another display panel shown in an exemplary embodiment of the present application;

[0043] Figure 6 is a schematic diagram of a cross-sectional structure of a reflective layer shown in an exemplary embodiment of the present application;

[0044] Figure 7 is a schematic flow chart of a method for preparing a display panel according to an exemplary embodiment of the present application;

[0045] In the drawings, the same reference numerals are used for the same components, and the drawings are not drawn to scale;

[0046] The accompanying drawings are marked as follows:

[0047] 10-display panel; 11-base substrate; 12-display unit; 121-pixel electrode; 122-filter unit; 13-reflection layer; 131-first dielectric layer; 132-second dielectric layer; 14-scattering layer; 141-scattering particles; 142-base material; 15-light-transmitting protective layer; 16-black matrix layer; 30-laser pen. DETAILED DESCRIPTION

[0048] The following will describe the implementation methods of the present application in detail in conjunction with the accompanying drawings and embodiments, so that the implementation process of how the present application applies technical means to solve technical problems and achieve corresponding technical effects can be fully understood and implemented accordingly. The embodiments of the present application and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the scope of protection of the present application. In the drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0049] It should be understood that although the terms "first", "second", "third", etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present application, the first element, component, region, layer or part discussed below can be represented as a second element, component, region, layer or part.

[0050] It will be appreciated that spatially relative terms, such as "above", "above", "below", "under", etc., may be used herein for convenience of description to describe the relationship of one element or feature to other elements or features shown in the figures. It will be appreciated that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation shown in the figures. For example, if the device in the figures is turned over, then elements or features described as "below other elements" would be oriented "above" the other elements or features. Thus, the exemplary terms "below" and "under" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial descriptors used herein interpreted accordingly.

[0051] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0052] Embodiments of the present application are described herein with reference to cross-sectional views that are schematic diagrams of ideal embodiments (and intermediate structures) of the present application. Thus, variations from the shapes shown due to, for example, manufacturing techniques and / or tolerances can be expected. Therefore, embodiments of the present application should not be limited to the specific shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing.

[0053] In order to thoroughly understand the present application, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present application. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other implementation methods.

[0054] In the existing display devices used in various teaching, lecture or conference occasions, the laser pen is visible before lighting, but after the display device is lit, the laser pen display is unclear and cannot be seen at full viewing angle. Or, only laser pens with wavelengths less than 420nm may be used, which also affects the display effect of the display device itself, resulting in yellowish white and bluish black.

[0055] The present application embodiment provides a display panel 10. Figure 1 The display panel 10 includes a base substrate 11 , a plurality of display units 12 , a reflective layer 13 and a scattering layer 14 .

[0056] A plurality of display units 12 are disposed on the base substrate 11 at intervals; wherein each display unit 12 includes at least one pixel.

[0057] That is to say, one pixel on the base substrate 11 may be divided into one display unit 12 , or a plurality of adjacent pixels may be divided into one display unit 12 .

[0058] The reflective layer 13 is located on the base substrate 11 and is disposed between any two adjacent display units 12 .

[0059] The scattering layer 14 is disposed on a side of the reflective layer 13 away from the base substrate 11 .

[0060] The scattering layer 14 is at least partially light-transmissive, and the orthographic projection of the scattering layer 14 on the base substrate 11 at least partially covers the orthographic projection of the reflective layer 13 on the base substrate 11 .

[0061] The side where the scattering layer 14 is located is the side where the display surface of the display panel 10 is located. When the laser emitted by the laser pen 30 irradiates the display panel 10, the laser incident on the display panel 10, the part irradiated on the reflective layer 13 is first scattered by the scattering layer 14, and the scattered laser is then reflected by the reflective layer 13, thereby increasing the diffuse reflection of the laser at various viewing angles. The reflected laser is then emitted through the scattering layer 14 to form a Lambertian-like light spot, which is visible at various viewing angles, thereby achieving full-viewing visibility of the laser on the display panel 10.

[0062] Furthermore, since the brightness of the laser is much higher than the display brightness of the display unit 12 , it can be clearly displayed on the display panel 10 .

[0063] The laser reflectivity of the reflective layer 13 is greater than a certain threshold value, that is, the reflective layer 13 is a high reflective layer, close to mirror reflection. When the laser emitted by the laser pen 30 directly irradiates the reflective layer 13, most of the laser will be reflected on the reflective layer 13. Figure 2However, it is only visible at certain viewing angles. If the laser is first irradiated onto the scattering layer 14, the laser is first scattered and then incident on the reflective layer 13. After being reflected by the reflective layer 13, the diffuse reflection of the laser at each viewing angle can be increased. After being reflected, the laser is emitted through the scattering layer 14 to form a Lambertian-like light spot, which is visible at all viewing angles, thus achieving full viewing angle visibility of the laser on the display panel 10, as shown in FIG. Figure 3 It can be understood that the scattering layer 14 destroys the mirror reflection of the above-mentioned reflective layer 13, so that most of the incident laser is scattered before being incident on the reflective layer 13, so that the laser pen can be seen at full viewing angle on the display panel 10.

[0064] The portion of the laser light irradiated onto the display unit 12 will not be reflected on the display unit 12 due to the light transmittance of the display unit 12 itself, and thus will not affect the display effect of the display panel 10 .

[0065] In some embodiments, the display panel 10 is an LCD panel, and the reflective layer 13 and the scattering layer 14 can be arranged on a color filter (color filter (CF)). Correspondingly, the display unit 12 includes a pixel electrode 121 stacked on a base substrate 11, a liquid crystal layer (not marked in the figure) and a filter unit on a color filter 122. The reflective layer 13 and the scattering layer 14 are arranged between adjacent filter units and used as a light shielding component, such as Figure 4 shown.

[0066] In some embodiments, the display panel 10 is an OLED panel, and the reflective layer 13 and the scattering layer 14 may be disposed on a pixel defining layer of the OLED panel.

[0067] In some embodiments, the display panel 10 is a Micro LED or mini LED panel, and the reflective layer 13 and the scattering layer 14 can be arranged on an isolation component between two adjacent LED lamp beads of the Micro LED or mini LED panel.

[0068] In some embodiments, the orthographic projections of the reflective layer 13 and the scattering layer 14 on the base substrate 11 do not cover the orthographic projections of the display unit 12 on the base substrate 11 to avoid affecting the light output of the display unit 12 .

[0069] In some embodiments, Figure 5 As shown, the display panel 10 further includes a black matrix layer 16 disposed between the reflective layer 13 and the base substrate 11 ; wherein the orthographic projection of the black matrix layer 16 on the base substrate 11 at least partially covers the orthographic projection of the reflective layer 13 on the base substrate 11 .

[0070] The black matrix layer 16 can further enhance the light shielding effect of the area between adjacent display units 12 and avoid the influence of color mixing between the display units 12 .

[0071] In some embodiments, the light-transmitting protective layer 15 covering the display unit 12 and the scattering layer 14 is used to protect the display unit 12 and the scattering layer 14 .

[0072] When the display panel 10 is an LCD panel, the light-transmitting protective layer 15 is a glass substrate covering the color filter layer.

[0073] In some embodiments, Figure 6 As shown, the reflective layer 13 includes (but is not limited to) a plurality of first dielectric layers 131 and a plurality of second dielectric layers 132 which are alternately stacked and arranged in a direction from the base substrate 11 to the scattering layer 14;

[0074] The refractive index of the first dielectric layer 131 is greater than the refractive index of the second dielectric layer 132 .

[0075] That is to say, the reflective layer 13 is formed by alternately stacking medium layers with high refractive index and medium layers with low refractive index.

[0076] Furthermore, the optical thickness of the first dielectric layer 131 is one quarter of the wavelength of the light to be reflected in the first dielectric layer 131 , and the optical thickness of the second dielectric layer 132 is one quarter of the wavelength of the light to be reflected in the second dielectric layer 132 .

[0077] The light to be reflected is the laser light irradiated onto the display panel 10 by the laser pen.

[0078] The incident laser is reflected by the layers of high-refractive-index and low-refractive-index dielectric layers, and reflected laser with extremely low loss and reflectivity close to 100% can be obtained.

[0079] The wavelength of the light to be reflected in the first dielectric layer 131 or the second dielectric layer 132 refers to the central wavelength of the reflected light in the first dielectric layer 131 or the second dielectric layer 132 .

[0080] In some embodiments, the alternating period of the first dielectric layer 131 and the second dielectric layer 132 may be more than 10.

[0081] In some embodiments, the reflective layer 13 can reflect incident laser light through the design of the film structure.

[0082] In some embodiments, the transmittance of the reflective layer 13 to the reflected light is about 1.6% to 2.1%, and the reflective layer 13 is close to total reflection characteristics. When the laser pulse width is 1ns, the laser damage threshold of the reflective layer 13 is 16.4 to 18.2 J / cm2.

[0083] It should be noted that, although the corresponding wavelength portion of natural light may be reflected on the reflective layer 13, the brightness of this portion of light is much lower than that of the laser, so the display effect of the laser is less affected, and the laser is clearly visible on the display panel 10. In addition, the corresponding wavelength portion of natural light is very small, and the display effect of the display panel 10 itself is less affected.

[0084] In some embodiments, the material of the first dielectric layer 131 includes (but is not limited to) polyvinyl pyrrolidone (PVP) and zirconium oxide (ZrO 2 ), and may be a PVP-ZrO 2 hybrid film.

[0085] In some embodiments, the content of polyvinyl pyrrolidone in the plurality of first dielectric layers 131 is different. That is, the refractive index of each first dielectric layer 131 may be different, but the refractive index is higher than that of the second dielectric layer 132 .

[0086] In some embodiments, the content of polyvinyl pyrrolidone in the first dielectric layer 131 is between 15% and 20%.

[0087] In some embodiments, the material of the second dielectric layer 132 includes silicon dioxide, and the refractive index of each second dielectric layer 132 may be the same.

[0088] In some embodiments, the scattering layer 14 includes a substrate 142 and a plurality of scattering particles 141 dispersed in the substrate.

[0089] The base material 142 may be a volatile organic material, and the scattering particles 141 may be directly attached to a side of the reflective layer 13 away from the base substrate 11 .

[0090] When the incident laser irradiates the scattering particles 141, a resonance effect occurs between the laser and the scattering particles 141, so that the laser is scattered on the scattering particles 141 and then incident on the emission layer, thereby achieving diffuse reflection of the laser at various viewing angles, and being visible at various viewing angles.

[0091] In some embodiments, the particle size of the scattering particles 141 is nanometer-scale.

[0092] In some embodiments, the scattering particles 141 include at least one of Ag-wrapped Si nanoparticles, Ag-wrapped Au nanoparticles, and Au-wrapped Si nanoparticles.

[0093] In the present application, the reflective layer 13 is located on the base substrate 11 and is disposed between any two adjacent display units 12; the scattering layer 14 is disposed on the side of the reflective layer 13 away from the base substrate 11. The laser light incident on the display panel 10, which is irradiated on the scattering layer 14, is first scattered by the scattering layer 14, and then reflected by the reflective layer 13 after scattering, thereby increasing the diffuse reflection of the laser light at various viewing angles, forming a Lambertian-like light spot, which is visible at various viewing angles, and realizing full viewing angle visibility of the laser pen on the display panel 10.

[0094] The present application also provides a method for preparing the display panel 10, such as Figure 7 As shown, including:

[0095] Step S110: providing a base substrate 11 .

[0096] The base substrate 11 may be a flexible substrate or a rigid (glass) substrate.

[0097] The flexible substrate is an organic film layer, including at least one of polyimide, negative adhesive or positive adhesive.

[0098] Step S120: forming a plurality of display units 12 arranged at intervals on the base substrate 11; wherein each display unit 12 includes at least one pixel.

[0099] That is to say, one pixel on the base substrate 11 may be divided into one display unit 12 , or a plurality of adjacent pixels may be divided into one display unit 12 .

[0100] Step S130 : forming a reflective layer 13 between any two adjacent display units 12 on the base substrate 11 .

[0101] The reflective layer 13 is a high reflective layer, which is close to mirror reflection.

[0102] In some embodiments, step S130 includes the following steps:

[0103] A plurality of first dielectric layers 131 and second dielectric layers 132 are alternately stacked and arranged from the base substrate 11 to the scattering layer 14 between any two adjacent display units 12 on the base substrate 11;

[0104] The refractive index of the first dielectric layer 131 is greater than the refractive index of the second dielectric layer 132 .

[0105] That is, the reflective layer 13 is formed by alternately stacking medium layers with high refractive index and medium layers with low refractive index.

[0106] Furthermore, the optical thickness of the first dielectric layer 131 is one quarter of the wavelength of the light to be reflected in the first dielectric layer 131 , and the optical thickness of the second dielectric layer 132 is one quarter of the wavelength of the light to be reflected in the second dielectric layer 132 .

[0107] The light to be reflected is the laser light irradiated onto the display panel 10 by the laser pen.

[0108] The incident laser is reflected by the layers of high-refractive-index and low-refractive-index dielectric layers, and reflected laser with extremely low loss and reflectivity close to 100% can be obtained.

[0109] The wavelength of the light to be reflected in the first dielectric layer 131 or the second dielectric layer 132 refers to the central wavelength of the reflected light in the first dielectric layer 131 or the second dielectric layer 132 .

[0110] In some embodiments, due to good stress between film layers, the alternating period (deposition period) of the first dielectric layer 131 and the second dielectric layer 132 can reach more than 10.

[0111] In some embodiments, the reflective layer 13 can reflect incident laser light through the design of the film structure.

[0112] In some embodiments, the transmittance of the reflective layer 13 to the reflected light is about 1.6% to 2.1%, and the reflective layer 13 is close to total reflection characteristics. When the laser pulse width is 1ns, the laser damage threshold of the reflective layer 13 is 16.4 to 18.2 J / cm2.

[0113] It should be noted that, although the corresponding wavelength portion of natural light is reflected on the reflective layer 13 , the brightness of this portion of light is much lower than that of the laser, so it has little effect on the display effect of the laser.

[0114] In some embodiments, the material of the first dielectric layer 131 includes (but is not limited to) polyvinyl pyrrolidone (PVP) and zirconium oxide (ZrO 2 ), and may be a PVP-ZrO 2 hybrid film.

[0115] The steps for forming the PVP-ZrO2 hybrid film are as follows: using zirconium propoxide (ZrPr) as the zirconium source and diethanolamine (DEA) as the complexing agent, polyvinyl pyrrolidone (PVP) was introduced in situ, and PVP-doped-ZrO2 sol was successfully synthesized in the ethanol system. Subsequently, a PVP-ZrO2 monolayer hybrid film was prepared on a glass substrate by spin coating.

[0116] In some embodiments, the content (ie, doping amount) of polyvinyl pyrrolidone in the plurality of first dielectric layers 131 is different. In other words, the refractive index of each first dielectric layer 131 may be different, but the refractive index is higher than that of the second dielectric layer 132 .

[0117] In some embodiments, the content of polyvinyl pyrrolidone in the first dielectric layer 131 is between 15% and 20%.

[0118] In some embodiments, the material of the second dielectric layer 132 includes silicon dioxide, and the refractive index of each second dielectric layer 132 is the same.

[0119] In some embodiments, before step S130, the preparation method further includes the following steps:

[0120] Step S132: forming a black matrix layer 16 between the reflective layer 13 and the base substrate 11;

[0121] The orthographic projection of the black matrix layer 16 on the base substrate 11 at least covers a portion of the orthographic projection of the reflective layer 13 on the base substrate 11 .

[0122] The black matrix layer 16 can further enhance the light shielding effect of the area between adjacent display units 12 and avoid the influence of color mixing between the display units 12 .

[0123] When the display panel 10 is an LCD panel, the black matrix layer 16 may be disposed between adjacent filter units.

[0124] Step S140 : forming a scattering layer 14 on a side of the reflective layer 13 away from the base substrate 11 .

[0125] The scattering layer 14 is at least partially light-transmissive, and the orthographic projection of the scattering layer 14 on the base substrate 11 at least partially covers the orthographic projection of the reflective layer 13 on the base substrate 11 .

[0126] Among them, the side where the scattering layer 14 is located is the side where the display surface of the display panel 10 is located. When the display panel 10 is irradiated with a laser pen, the laser incident on the display panel 10, the part irradiated on the reflective layer 13 is first scattered by the scattering layer 14, and the scattered laser is then reflected by the reflective layer 13, thereby increasing the diffuse reflection of the laser at various viewing angles, forming a Lambertian-like light spot that is visible at various viewing angles, thereby achieving full-viewing visibility of the laser pen on the display panel 10.

[0127] Furthermore, since the brightness of the laser is much higher than the display brightness of the display unit 12 , it can be clearly displayed on the display panel 10 .

[0128] The portion of the laser light irradiated onto the display unit 12 will not be reflected on the display unit 12 due to the light transmittance of the display unit 12 itself, and thus will not affect the display effect of the display panel 10 .

[0129] In some embodiments, the scattering layer 14 includes a substrate 142 and a plurality of scattering particles 141 dispersed in the substrate.

[0130] The base material 142 may be a volatile organic material, and the scattering particles 141 may be directly attached to a side of the reflective layer 13 away from the base substrate 11 .

[0131] When the incident laser irradiates the scattering particles 141, a resonance effect occurs between the laser and the scattering particles 141, so that the laser is scattered on the scattering particles 141 and then incident on the emission layer, thereby achieving diffuse reflection of the laser at various viewing angles, and being visible at various viewing angles.

[0132] In some embodiments, the particle size of the scattering particles 141 is nanometer-scale.

[0133] In some embodiments, the scattering particles 141 include at least one of Ag-wrapped Si nanoparticles, Ag-wrapped Au nanoparticles, and Au-wrapped Si nanoparticles.

[0134] In some embodiments, after step S140, the preparation method further comprises the following steps:

[0135] Step S150 : forming a light-transmitting protective layer 15 covering the display unit 12 and the scattering layer 14 .

[0136] In some embodiments, the light-transmitting protective layer 15 covering the display unit 12 and the scattering layer 14 is used to protect the display unit 12 and the scattering layer 14 .

[0137] When the display panel 10 is an LCD panel, the light-transmitting protective layer 15 is a glass substrate covering the color filter layer.

[0138] An embodiment of the present application further provides a display device, which includes the display panel 10 described above.

[0139] In some embodiments, the display device may include a display panel and a housing, wherein the display panel is connected to the housing, for example, the display panel is embedded in the housing. The display device may be, for example, a display device for demonstration, which may be used in teaching, lectures, meetings, and other scenarios.

[0140] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. Although the implementation methods disclosed in the present application are as above, the content is only an implementation method adopted to facilitate the understanding of the present application and is not intended to limit the present application. Any technician in the technical field to which the present application belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present application, but the protection scope of the present application shall still be subject to the scope defined by the attached claims.

Claims

1. A display panel, characterized in that: include: substrate substrate; A plurality of display units are arranged on the substrate at intervals; wherein each of the display units includes at least one pixel; A reflective layer located on the base substrate and arranged between any two adjacent display units; A scattering layer disposed on a side of the reflective layer away from the base substrate; The scattering layer is at least partially light-transmissive, and the orthographic projection of the scattering layer on the base substrate at least covers a portion of the orthographic projection of the reflective layer on the base substrate; The display unit comprises a pixel electrode, a liquid crystal layer and a filter unit on a color filter stacked on a base substrate, and the reflective layer and the scattering layer are arranged between adjacent filter units.

2. The display panel according to claim 1, characterized in that: Also includes: A black matrix layer disposed between the reflective layer and the base substrate; Wherein, the orthographic projection of the black matrix layer on the base substrate at least covers a portion of the orthographic projection of the reflective layer on the base substrate.

3. The display panel according to claim 1, characterized in that: Also includes: A light-transmitting protective layer covers the display unit and the scattering layer.

4. The display panel according to claim 1, characterized in that: The reflective layer comprises a plurality of first dielectric layers and a plurality of second dielectric layers alternately stacked and arranged in a direction from the base substrate to the scattering layer; Wherein, the refractive index of the first medium layer is greater than the refractive index of the second medium layer.

5. The display panel according to claim 4, characterized in that: The optical thickness of the first dielectric layer is one quarter of the wavelength of the light to be reflected in the first dielectric layer; The optical thickness of the second dielectric layer is one quarter of the wavelength of the light to be reflected in the second dielectric layer.

6. The display panel according to claim 4, characterized in that: The material of the first dielectric layer includes polyvinyl pyrrolidone and zirconium oxide.

7. The display panel according to claim 6, characterized in that: The content of the polyvinyl pyrrolidone in the plurality of first dielectric layers is different.

8. The display panel according to claim 4, characterized in that: The material of the second dielectric layer includes silicon dioxide.

9. The display panel according to claim 1, characterized in that: The scattering layer includes a plurality of scattering particles.

10. The display panel according to claim 9, characterized in that: The particle size of the scattering particles is nanometer level.

11. A method for preparing a display panel, characterized in that: include: providing a substrate base plate; A plurality of display units are formed on the substrate and are arranged at intervals; wherein each of the display units includes at least one pixel; forming a reflective layer on the base substrate between any two adjacent display units; forming a scattering layer on a side of the reflective layer away from the substrate; The scattering layer is at least partially light-transmissive, and the orthographic projection of the scattering layer on the base substrate at least partially covers the orthographic projection of the reflective layer on the base substrate.

12. The preparation method according to claim 11, characterized in that: Forming a reflective layer between any two adjacent display units on the substrate includes the following steps: Forming a plurality of first medium layers and second medium layers alternately stacked and arranged in a direction from the base substrate to the scattering layer between any two adjacent display units on the base substrate; Wherein, the refractive index of the first medium layer is greater than the refractive index of the second medium layer.

13. A display device, characterized in that: The invention comprises a display panel as claimed in any one of claims 1 to 10 or a display panel prepared by the preparation method as claimed in claim 11 or 12.

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