Display panel and display device

Abstract

The invention provides a display panel and a display device.The display panel comprises a color filter substrate, a retaining wall structure and an array substrate which are arranged in sequence, the color filter substrate comprises a filter film layer, the filter film layer comprises a plurality of color filter units, the retaining wall structure comprises a plurality of cavities, the cavities are used for separating the color filter units, and the array substrate is arranged on the retaining wall structure. Each of the plurality of chambers includes a plurality of black microparticles and a plurality of white microparticles; the color filter substrate is connected with the retaining wall structure through a first viscous layer and a second viscous layer which are sequentially arranged, the first viscous layer has viscosity when the temperature is larger than or equal to a first temperature, the second viscous layer has viscosity when the temperature is larger than or equal to a second temperature, and the second temperature is higher than the first temperature. When voltage is applied to the display panel, migration of the microparticles in the retaining wall structure among the pixels can be avoided, and then the definition and uniformity of image display of the display panel are improved.

Description

Technical Field

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

[0002] With the continuous development of display technology, reflective displays have gradually gained widespread application. Unlike traditional backlight displays, reflective displays rely on ambient light to present images. This design not only reduces power consumption, but also reduces the stimulation to the eyes after long-term use, making it a popular choice for green, eye-protection display solutions. At present, reflective displays are widely used in e-paper readers, smart watches, car displays, outdoor billboards, traffic signs and other fields, meeting people's needs for clear and comfortable viewing experience under various lighting conditions.

[0003] The display panel of a reflective display is generally formed by stacking a color filter substrate (CF), a baffle structure and an array substrate. However, in the process of preparing the display panel, the baffle structure may not be completely sealed when the preparation height is met. When a voltage is applied to the display panel, the particles in the baffle structure may migrate between pixels. The migration of such particles may cause uneven light scattering or occlusion between pixels, resulting in a decrease in the display brightness and contrast of the display panel, thereby affecting the clarity and uniformity of the image. Summary of the invention

[0004] The present application provides a display panel and a display device, which can prevent particles in a retaining wall structure from migrating between pixels when a voltage is applied to the display panel, thereby improving the clarity and uniformity of image display on the display panel.

[0005] In a first aspect, a display panel is provided, which includes: a color filter substrate, a retaining wall structure and an array substrate arranged in sequence, the color filter substrate includes a filter film layer, the filter film layer includes a plurality of color filter units, the retaining wall structure includes a plurality of chambers, the plurality of chambers are used to separate the plurality of color filter units, each of the plurality of chambers includes a plurality of black particles and a plurality of white particles; the color filter substrate is connected to the retaining wall structure through a first viscosity layer and a second viscosity layer arranged in sequence, the first viscosity layer is viscosity when the temperature is greater than or equal to a first temperature, the second viscosity layer is viscosity when the temperature is greater than or equal to a second temperature, and the second temperature is higher than the first temperature.

[0006] In the embodiment of the present application, the double-layer adhesive layer structure can achieve a tight fit between the retaining wall structure and the color filter substrate. When voltage is applied to the above-mentioned display panel, the migration of particles in the retaining wall structure between pixels can be avoided, thereby improving the clarity and uniformity of the image displayed by the display panel.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the upper surface of the retaining wall structure penetrates the second adhesive layer and is pressed into the interior of the first adhesive layer.

[0008] In an embodiment of the present application, the upper surface of the retaining wall structure penetrates the second adhesive layer and is pressed into the interior of the first adhesive layer. In this way, the retaining wall structure can be tightly connected to the color filter substrate. This tight connection method can effectively prevent the substrate from sliding or dislocating relative to each other during use, thereby ensuring that each layer structure of the display panel remains precisely aligned; and it can more effectively prevent the migration of particles in the retaining wall structure between pixels, thereby improving the clarity and uniformity of the image displayed by the display panel.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the color filter substrate also includes a glass substrate, a common electrode, a passivation layer, a black matrix and a flat layer; the glass substrate, the common electrode and the passivation layer are stacked in sequence above the filter film layer, the black matrix and the flat layer are arranged in sequence below the filter film layer, and the flat layer is connected to the retaining wall structure through the first adhesive layer and the second adhesive layer.

[0010] In the embodiment of the present application, the black matrix can be set to absorb unnecessary stray light and prevent light from crosstalking between color filter units, thereby improving the contrast of the display panel and making the displayed content clearer and the colors more vivid.

[0011] In combination with the first aspect, in some implementations of the first aspect, the thickness of the first adhesive layer is greater than the thickness of the second adhesive layer.

[0012] In the embodiment of the present application, since the upper surface of the retaining wall structure penetrates the second adhesive layer and is pressed into the interior of the first adhesive layer, by setting the thickness of the first adhesive layer to be greater than the thickness of the second adhesive layer, the retaining wall structure and the color filter substrate can be more closely connected, thereby more effectively preventing the migration of particles in the retaining wall structure between pixels.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the thickness of the first adhesive layer is 3 to 4 micrometers, and the thickness of the second adhesive layer is 1 to 2 micrometers.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the thickness of the retaining wall structure is greater than or equal to 30 microns.

[0015] In the embodiment of the present application, by setting the thickness of the retaining wall structure, it is beneficial for the black particles in the display panel to achieve an ideal number of particle stacking layers, thereby optimizing the contrast and black state display effect of the display panel.

[0016] In combination with the first aspect, in some implementations of the first aspect, the side surface of the retaining wall structure, the lower surface of the color filter substrate, and the upper surface of the array substrate are fixed by a frame sealing adhesive.

[0017] In the embodiment of the present application, the retaining wall structure, the color filter substrate and the array substrate are fixed by means of frame sealing glue, which can improve the structural stability of the display panel and prevent relative sliding or displacement of the structures. On the other hand, it can improve the sealing and display performance of the display panel and help prevent pollutants outside the display panel from invading the interior of the display panel.

[0018] In combination with the first aspect, in some implementations of the first aspect, the frame sealing glue includes silicon balls, and the diameter of the silicon balls is less than or equal to the difference between the thickness of the retaining wall structure and the thickness of the first adhesive layer and the second adhesive layer.

[0019] In the embodiment of the present application, by setting the diameter of the silicon balls in the frame-sealing glue, it can be ensured that the spacing between the substrates does not exceed the set thickness, thereby preventing excessively large or small spacing from affecting the display effect; on the other hand, it can be ensured that the frame-sealing glue can be effectively supported between the substrates after setting without excessively squeezing the adhesive layer, which helps to improve the mechanical strength and impact resistance of the display panel and extend the service life of the display panel.

[0020] In combination with the first aspect, in certain implementations of the first aspect, the first adhesive layer is made of epoxy ester glue and / or polyurethane glue material, and the second adhesive layer is made of at least one of the following materials: organic silicone, phenolic resin glue, urea-formaldehyde resin glue, heat-resistant epoxy glue, polyimide glue.

[0021] In combination with the first aspect, in some implementations of the first aspect, the color filter unit includes: a red filter unit, a green filter unit, and a blue filter unit.

[0022] In a second aspect, a display panel is provided, wherein the display device comprises the display panel in any one of the implementations of the first aspect.

[0023] In combination with the second aspect, in some implementations of the second aspect, the display device further includes: components such as a housing, a power supply, and control buttons. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of the structure and display principle of a reflective display provided in an embodiment of the present application;

[0025] Figure 2 is a schematic diagram of the structure of another reflective display provided in an embodiment of the present application;

[0026] Figure 3 is a schematic diagram of another display principle of a reflective display provided in an embodiment of the present application;

[0027] Figure 4 is a schematic diagram of the structure and basic principle of another reflective display provided in an embodiment of the present application;

[0028] Figure 5 It is a schematic diagram of particle crosstalk occurring in the retaining wall structure provided in an embodiment of the present application;

[0029] Figure 6 It is a structural schematic diagram of a color filter substrate, a first adhesive layer and a second adhesive layer provided in an embodiment of the present application;

[0030] Figure 7 is a schematic diagram of a barrier wall structure being adhered to a first adhesive layer side after a display panel is disassembled at a first temperature provided by an embodiment of the present application;

[0031] Figure 8 It is a schematic diagram of a baffle structure side and a second adhesive layer side after the display panel is disassembled at a first temperature provided by an embodiment of the present application;

[0032] Fig. 9 is a scanning electron microscope schematic diagram of an indentation including a retaining wall structure on the side of a second adhesive layer provided in an embodiment of the present application;

[0033] Fig.10 is a schematic diagram of preparing an array substrate and a retaining wall structure provided in an embodiment of the present application;

[0034] Fig.11 is a scanning electron microscope schematic diagram of a retaining wall structure provided in an embodiment of the present application;

[0035] Fig.12 It is a schematic diagram of a manufacturing process of a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In the present application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0037] The prefixes such as "first" and "second" used in the embodiments of the present application are only used to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers used to distinguish description objects in the embodiments of the present application does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and the use of such prefixes should not constitute an unnecessary limitation.

[0038] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0039] With the continuous development of display technology, reflective displays have gradually gained widespread application. Unlike traditional backlight displays, reflective displays rely on ambient light to present images. This design not only reduces power consumption, but also reduces the stimulation to the eyes after long-term use, making it a popular choice for green, eye-protection display solutions. At present, reflective displays are widely used in e-paper readers, smart watches, car displays, outdoor billboards, traffic signs and other fields, meeting people's needs for clear and comfortable viewing experience under various lighting conditions.

[0040] Reflective displays can adopt a variety of structural designs and different reflection principles to meet various application scenarios and functional requirements.

[0041] For example, Figure 1As shown, the display panel of the reflective display (E-Ink) may include an upper substrate 101, a lower substrate 102, an upper electrode 103, a lower electrode 104 and a microcapsule 105, wherein the interior of the microcapsule 105 includes black particles 1051, white particles 1052 and ink 1053, the black particles 1051 carry negative charges, the white particles 1052 carry positive charges, and the microcapsule 105 as a whole is in an electrically balanced state. When positive electricity is applied to the lower substrate 102, the black particles 1051 approach the lower substrate 102, and the white particles 1052 are distributed above the microcapsule 105, and the ambient light incident from above the display panel is reflected at the white particles 1052 of the microcapsule 105, and the reflective display appears in a bright state; when negative electricity is applied to the lower substrate 102, the white particles 1052 approach the lower substrate 102, and the black particles 1051 are distributed above the microcapsule 105, and the ambient light incident from above the display panel is absorbed at the black particles 1051 of the microcapsule 105, and the display panel appears in a dark state.

[0042] For example, Figure 2 As shown in (a) of FIG. 1 , the display panel of the reflective display (clear-Ink, CID) is formed by stacking a color filter substrate (CF Glass) 201, a retaining wall structure 203 and an array substrate (TFT Glass) 202. The retaining wall structure 203 can be filled with an ink solvent 204. The side of the retaining wall structure 203, the lower surface of the color filter substrate 201 and the upper surface of the array substrate 202 can be sealed with a sealant (SEAL) 205. The color filter substrate 201 includes a plurality of lenses 206, such as Figure 2 As shown in (b) of FIG. 1 , the retaining wall structure 203 is a closed structure, and the retaining wall structure 203 includes a plurality of chambers 207, each of which may include a plurality of black particles 209 and a plurality of white particles 210, and each pixel may correspond to a chamber 207. Figure 3As shown, the lens structure 206 may include a dielectric layer 2061 and a common electrode 2062. When a voltage is applied to the display panel, the black particles 209 will be driven away from the lens 206 and move toward the array substrate. At this time, the ink solvent 204 is in contact with the dielectric layer 2061 on the lens 206. Since the refractive index of the dielectric layer 2061 on the lens 206 is greater than the refractive index of the ink solvent 204, when natural light is incident on the interface between the dielectric layer 2061 and the ink solvent 204 of the lens 206, total reflection occurs, and the reflected light passes through the color filter substrate 201 and presents a bright state; when an opposite voltage is applied to the display panel, the black particles 209 will be driven away from the array substrate 202 and move toward the surface of the lens 206. At this time, the black particles 209 wrap the surface of the lens 206. When natural light is incident on the interface between the dielectric layer 2061 on the surface of the lens 206 and the black particles 209, the natural light is absorbed by the black particles 209, and the display panel will present a dark state.

[0043] For example, Figure 4 As shown, in Figure 2 and Figure 3 On the basis of the display panel, the lens structure 206 is omitted, and a reflective layer 210 (Ag layer), a common electrode 211, a passivation layer (passivation, PVX) 212 and a passivation layer 213 are introduced at the bottom. By changing the positive and negative states of the six electrodes in the passivation layer 213, a lateral horizontal electric field can be applied in the display panel to control the lateral aggregation state of the black particles 209 and the white particles 210, thereby increasing the reflection intensity of natural light and improving the reflectivity of natural light.

[0044] exist Figures 2 to 4 In the structure of the display panel, in order to achieve the number of stacking layers of saturated black particles 209, the thickness of the retaining wall structure 203 needs to be designed. According to simulation and actual measurement results, when the thickness of the retaining wall structure 203 is greater than or equal to 25 microns, the display panel can achieve a good display effect.

[0045] However, if Figure 5 As shown, when the thickness of the retaining wall structure 203 is greater than or equal to 30 microns, when a voltage is applied to the display panel, the microparticles in the retaining wall structure 203 may migrate between pixels. The migration of such microparticles may cause uneven light scattering or obstruction between pixels, resulting in a decrease in the display brightness and contrast of the display panel, thereby affecting the clarity and uniformity of the image.

[0046] The embodiments of the present application provide a display panel and a display device, which can prevent the migration of particles in the retaining wall structure between pixels when a voltage is applied to the display panel, thereby improving the clarity and uniformity of the image displayed by the display panel.

[0047] The display panel provided by the embodiment of the present application includes: a color filter substrate 201, a retaining wall structure 203 and an array substrate 202 arranged in sequence, the color filter substrate 201 includes a filter film layer, the filter film layer includes a plurality of color filter units, the retaining wall structure 203 includes a plurality of chambers 207, the plurality of chambers 207 are used to separate the plurality of color filter units, each chamber 207 in the plurality of chambers 207 includes a plurality of black particles 209 and a plurality of white particles 210; the color filter substrate 201 is connected to the retaining wall structure 203 through a first viscosity layer 214 and a second viscosity layer 215 arranged in sequence, the first viscosity layer 214 has viscosity when it is greater than or equal to a first temperature, the second viscosity layer 215 has viscosity when it is greater than or equal to a second temperature, and the second temperature is higher than the first temperature.

[0048] Optionally, the color filter unit includes: a red filter unit, a green filter unit and a blue filter unit.

[0049] Alternatively, the first temperature may be room temperature (eg, 25° C.) and the second temperature may be an elevated temperature (eg, 150 degrees Celsius).

[0050] Optionally, the first adhesive layer 214 is made of epoxy ester glue and / or polyurethane glue, and the second adhesive layer 215 is made of at least one of the following materials: organic silica gel, phenolic resin glue, urea-formaldehyde resin glue, heat-resistant epoxy glue, and polyimide glue.

[0051] Optionally, the thickness of the first adhesive layer 214 may be greater than the thickness of the second adhesive layer 215. For example, the thickness of the first adhesive layer 214 is 3 to 4 micrometers, and the thickness of the second adhesive layer 215 is 1 to 2 micrometers. In this way, the retaining wall structure 203 and the color filter substrate 201 can be more closely connected.

[0052] In a possible implementation, the upper surface of the retaining wall structure 203 penetrates the second adhesive layer 215 and is pressed into the interior of the first adhesive layer 214, so that the retaining wall structure 203 can be tightly connected to the color filter substrate 201 to ensure that each layer structure of the display panel remains precisely aligned.

[0053] For example, the glass substrate, the first adhesive layer 214 and the second adhesive layer 215 of the color filter substrate 201 may be arranged as follows: Figure 6 As shown, the first adhesive layer 214 can be prepared by coating and pre-baking process, and the viscosity can be less than or equal to 200CP. Since the first adhesive layer 214 has viscosity at a temperature greater than or equal to the first temperature, when the retaining wall structure 203 is pressed into the first adhesive layer 214, the retaining wall structure 203 can be tightly connected at the first temperature. Figure 7As shown in (a) in FIG. 1 , after the display panel is disassembled under the first temperature environment, the retaining wall structure 203 is adhered to one side of the first adhesive layer 214, and it is difficult to disassemble the display panel. Figure 7 The morphology under the microscope shown in (b) can also illustrate this phenomenon (ie, the first adhesive layer 214 can be tightly connected to the retaining wall structure 203 at the first temperature).

[0054] The second viscous layer 215 can also be prepared by a coating and pre-baking process, and the viscosity can be less than or equal to 200CP. Since the second viscous layer 215 has viscosity at a temperature greater than or equal to the second temperature and has no viscosity at the first temperature, the second viscous layer 215 can play a good fixing role on the retaining wall structure 203 at the first temperature. Figure 8 As shown in (a), under the first temperature environment, the display panel is disassembled, and the side of the retaining wall structure 203 is not adhered to the side of the second adhesive layer 215, as shown in FIG. Figure 8 As shown in (b) of FIG. 1 , the morphology under a microscope can also explain this phenomenon (i.e., the second viscous layer 215 is not viscous at the first temperature, and the second viscous layer 215 can support the first viscous layer 214 to be tightly connected to the retaining wall structure 203). Fig. 9 As shown, it can be seen from the results of the scanning electron microscope that there are indentations of the retaining wall structure 203 on the second adhesive layer 215 ( Fig. 9 The depressions around the rectangular unit represent indentations, and the reason why there are raised portions on the edge of the second adhesive layer 215 or the rectangular unit is that during the separation of the color filter substrate 201 and the array substrate 202, part of the adhesive layer is pulled outward due to the retaining wall structure 203, that is, the upper surface of the retaining wall structure 203 can penetrate the second adhesive layer 215.

[0055] In a possible implementation, the array substrate 202 may also be referred to as a thin film transistor (TFT) substrate. Fig.10 As shown, a retaining wall structure 203 can be prepared on the array substrate 202; the material for preparing the retaining wall structure 203 can be acrylic gel material, and the preparation process can be processes such as coating, exposure and development, wherein the thickness of the retaining wall structure 203 can be greater than or equal to 30 microns, the shape of the retaining wall structure 203 can be any shape (for example, a cube), and the cross-sectional shape of the multiple chambers 207 in the retaining wall structure 203 can be any shape, for example, a circle, an ellipse, a rectangle, a square or a triangle.

[0056] For example, the morphology of the prepared retaining wall structure 203 under a scanning electron microscope can be as follows: Fig.11 As shown, in Fig.11In the embodiment, the retaining wall structure 203 is in the shape of a cube, and includes a plurality of chambers 207 with rectangular cross sections.

[0057] In a possible implementation, the side surface of the retaining wall structure 203, the lower surface of the color filter substrate 201 and the upper surface of the array substrate 202 are fixed by a frame sealant 205. In this way, the structural stability of the display panel can be improved, and relative sliding or displacement of each structure can be prevented. On the other hand, the sealing and display performance of the display panel can be improved, thereby effectively preventing pollutants outside the display panel from invading the interior of the display panel.

[0058] For example, the manufacturing process of the display panel can be as follows: Fig.12 shown.

[0059] like Fig.12 As shown in (a), a sealant 205 is applied on the lower surface of the color filter substrate 201, the side of the retaining wall structure 203 and the upper surface of the array substrate 202. The sealant 205 includes a silicon ball, and the diameter of the silicon ball is less than or equal to the difference between the thickness of the retaining wall structure 203 and the thickness of the first adhesive layer 214 and the second adhesive layer 215. In this way, it can be ensured that the spacing between the substrates does not exceed the set thickness, and the display effect is prevented from being affected by too large or too small spacing. On the other hand, it can be ensured that the sealant can be effectively supported between the substrates after being set, without excessively squeezing the adhesive layer, which helps to improve the mechanical strength and impact resistance of the display panel and extend the service life of the display panel.

[0060] like Fig.12 As shown in (b), at a first temperature, the display panel is vacuum-aligned in a vacuum alignment system (VAS). At this time, since the second adhesive layer 215 is not adhesive at the first temperature and the frame sealant 205 is cured at the first temperature, the retaining wall structure 203 does not pass through the second adhesive layer 215, nor is it pressed into the first adhesive layer 214. After vacuum-aligning, since the retaining wall structure 203 inside the display panel is higher than the height of the frame sealant in the edge area, the inside of the display panel is propped up, while the outside of the frame sealant has no structural support, and the height of the silicon ball inside the frame sealant is less than the height of the retaining wall structure 203, the color filter substrate 201 can be bent after vacuum-aligning.

[0061] like Fig.12As shown in (c), the display panel is placed at the second temperature for processing. At this time, both adhesive layers are adhesive, and the upper surface of the retaining wall structure 203 can pass through the second adhesive layer 215 and be pressed into the interior of the first adhesive layer 214. When the temperature returns to the first temperature, the first adhesive layer 214 is still adhesive, and the retaining wall structure 203 can be tightly connected with the first adhesive layer 214, while the second adhesive layer 215 is not adhesive. At this time, the first adhesive layer 214 can play a good role in fixing the retaining wall structure 203. Among them, the inconsistent support height of the retaining wall structure 203 in the display panel is limited by the process limit capability. The uniformity of the preparation height of the retaining wall structure 203 is ±1.5 microns, and the support height cannot be consistent. This is also the reason why the microparticles migrate between pixels. The first adhesive layer 214 and the second adhesive layer 215 can prevent the microparticles from migrating between pixels.

[0062] In a possible implementation, the color filter substrate 201 further includes a glass substrate, a common electrode, a passivation layer, a black matrix and a flat layer; the glass substrate, the common electrode and the passivation layer are sequentially stacked on the filter film layer, the black matrix and the flat layer are sequentially arranged below the filter film layer, and the flat layer is connected to the retaining wall structure 203 through the first adhesive layer 214 and the second adhesive layer 215. In this way, the black matrix can absorb unnecessary stray light and prevent light from crosstalking between color filter units, thereby improving the contrast of the display panel, making the displayed content clearer and the colors more vivid.

[0063] In the embodiment of the present application, the double-layer adhesive layer structure can achieve a tight fit between the retaining wall structure and the color filter substrate. When voltage is applied to the above-mentioned display panel, the migration of particles in the retaining wall structure between pixels can be avoided, thereby improving the clarity and uniformity of the image displayed by the display panel.

[0064] It should be noted that, in the various implementations of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the various implementations are consistent and can be referenced to each other, and the technical features in different implementations can be combined to form a new embodiment according to their internal logical relationships.

[0065] An embodiment of the present application further provides a display device, comprising a display panel in any one of the implementation modes of the above embodiments.

[0066] Optionally, the display device further includes components such as a housing, a power supply, and control buttons.

[0067] Optionally, the display device can be: a mobile phone, a television, a tablet computer, a laptop computer, a wearable device, an e-reader, a smart home device, an industrial and medical display, a smart billboard and digital signage, etc.

[0068] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: The display panel comprises: a color filter substrate, a retaining wall structure and an array substrate arranged in sequence, the color filter substrate comprises a filter film layer, the filter film layer comprises a plurality of color filter units, the retaining wall structure comprises a plurality of chambers, the plurality of chambers are used to separate the plurality of color filter units, and each of the plurality of chambers comprises a plurality of black particles and a plurality of white particles; The color filter substrate is connected to the retaining wall structure through a first adhesive layer and a second adhesive layer arranged in sequence, the first adhesive layer is adhesive when the temperature is greater than or equal to a first temperature, the second adhesive layer is adhesive when the temperature is greater than or equal to a second temperature, and the second temperature is higher than the first temperature.

2. The display panel according to claim 1, wherein: The upper surface of the retaining wall structure penetrates the second adhesive layer and is pressed into the interior of the first adhesive layer.

3. The display panel according to claim 1 or 2, characterized in that: The color filter substrate also includes a glass substrate, a common electrode, a passivation layer, a black matrix and a flat layer; The glass substrate, the common electrode and the passivation layer are sequentially stacked on the filter film layer, the black matrix and the planar layer are sequentially arranged below the filter film layer, and the planar layer is connected to the retaining wall structure through the first adhesive layer and the second adhesive layer.

4. The display panel according to claim 1 or 2, characterized in that: The thickness of the first adhesive layer is greater than the thickness of the second adhesive layer.

5. The display panel according to claim 4, wherein: The thickness of the first adhesive layer is 3 to 4 micrometers, and the thickness of the second adhesive layer is 1 to 2 micrometers.

6. The display panel according to claim 1 or 2, characterized in that: The thickness of the retaining wall structure is greater than or equal to 30 microns.

7. The display panel according to claim 1 or 2, characterized in that: The side surface of the retaining wall structure, the lower surface of the color filter substrate and the upper surface of the array substrate are fixed by means of a sealing glue.

8. The display panel according to claim 7, wherein: The frame sealing glue includes silicon balls, and the diameter of the silicon balls is less than or equal to the difference between the thickness of the retaining wall structure and the thickness of the first adhesive layer and the second adhesive layer.

9. The display panel according to claim 1 or 2, characterized in that: The first adhesive layer is made of epoxy ester glue and / or polyurethane glue, and the second adhesive layer is made of at least one of the following materials: organic silica gel, phenolic resin glue, urea-formaldehyde resin glue, heat-resistant epoxy glue or polyimide glue.

10. The display panel according to claim 1 or 2, characterized in that: The color filter unit includes: a red filter unit, a green filter unit and a blue filter unit.

11. A display device, characterized in that: The display device comprises: the display panel according to any one of claims 1 to 10.

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