Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate which is provided with a display area and a non-display area, and the non-display area comprises a binding area located on the side away from the display area; the protective adhesive layer is arranged in the non-display area and at least covers the binding area; the polaroid is at least located in the display area and at least extends to the edge of the protective adhesive layer; the first retaining wall structure is arranged in the non-display area and located between the protective adhesive layer and the polaroid; the polaroid covers at least part of the first retaining wall structure. The display panel can prevent a water vapor invasion path from being formed at the edge of the polaroid, water vapor permeation is effectively prevented, the reliability of the display panel is remarkably improved, and the service life of the display panel is remarkably prolonged.

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] Hybrid products are display products that combine Glass (glass substrate) and TFE (Thin Film Encapsulation) technology. They are widely used in display screens of various electronic devices such as mobile phones, tablets and TVs.

[0003] In hybrid products, in order to prevent water vapor erosion, COF (Chip On Film) surface sealing technology is usually used, and the POL (polarizer) boundary serves as the COF sealing blocking boundary.

[0004] However, the POL material itself is not resistant to high temperatures, especially in high temperature and high humidity environments, the POL material will shrink, resulting in the boundary between the POL and COF sealant being exposed, thus forming a path for water vapor to penetrate. The penetration of water vapor will not only affect the performance of the display panel, but may also reduce the reliability and life of the product.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the invention

[0006] Based on this, the embodiments of the present application provide a display panel and a display device, which can avoid the formation of a water vapor intrusion path at the edge of the polarizer, effectively prevent water vapor penetration, and significantly improve the reliability and service life of the display panel.

[0007] According to some embodiments, the present application provides a display panel, including:

[0008] A substrate having a display area and a non-display area, wherein the non-display area includes a binding area located at a side away from the display area;

[0009] A protective adhesive layer, disposed in the non-display area and at least covering the binding area;

[0010] A polarizer, located at least in the display area and extending at least to the edge of the protective adhesive layer;

[0011] The first retaining wall structure is disposed in the non-display area and is located between the protective adhesive layer and the polarizer; the polarizer covers at least a portion of the first retaining wall structure.

[0012] In some embodiments, the first retaining wall structure comprises:

[0013] embankment;

[0014] A plurality of protrusions are arranged on one side of the bank close to the binding area, and the protrusions and the surface of the protective adhesive layer facing the protrusions are wedged with each other.

[0015] In some embodiments, the thickness of the bank is greater than the thickness of the protrusion.

[0016] In some embodiments, the protective adhesive layer also covers the plurality of protrusions and is in contact with the embankment.

[0017] In some embodiments, a thickness of a side of the protective adhesive layer in contact with the bank is smaller than a maximum thickness of the protective adhesive layer.

[0018] In some embodiments, the maximum thickness of the protective glue layer is greater than the thickness of the bank.

[0019] In some embodiments, the polarizer includes a first sub-polarizer located in the display area and a second sub-polarizer located in the non-display area;

[0020] The protective adhesive layer covering the portion of the second sub-polarizer has a position corresponding to a maximum thickness thereof in the thickness direction of the display panel that is higher than the lowest point of the second sub-polarizer and lower than the highest point of the second sub-polarizer.

[0021] In some embodiments, the orthographic projection of the first retaining wall structure on the substrate is located within the orthographic projection of the polarizer on the substrate, and there is a gap between the orthographic projection of the first retaining wall structure and the orthographic projection of the polarizer on the substrate.

[0022] In some embodiments, a distance between an orthographic projection of the first retaining wall structure on the substrate and an orthographic projection of the polarizer on the substrate is within a range of 50 μm to 150 μm.

[0023] In some embodiments, a second retaining wall structure and a third retaining wall structure are further provided on the substrate;

[0024] The first retaining wall structure, the second retaining wall structure and the third retaining wall structure are sequentially arranged at intervals along a direction from the non-display area to the display area.

[0025] In some embodiments, the substrate comprises a glass substrate;

[0026] The display panel further includes a thin film encapsulation layer, and the thin film encapsulation layer is at least located above the display area of ​​the substrate.

[0027] According to some embodiments, the present application further provides a display device, including the display panel in the above embodiment.

[0028] This application may / at least have the following advantages:

[0029] The present application provides a protective adhesive layer in the non-display area to cover the binding area, thereby playing a preliminary role in blocking water vapor. The protective adhesive layer can seal the binding area, prevent the binding area from being directly exposed to the external environment, and weaken the impact of water vapor erosion.

[0030] The first retaining wall structure is arranged between the protective adhesive layer and the polarizer, which can form a barrier between the protective adhesive layer and the polarizer, blocking the path of water vapor invading through the boundary of the polarizer, avoiding the adverse effect of water vapor erosion on the performance of the display panel, thereby improving the overall protection performance of the display panel.

[0031] On the basis of setting a first retaining wall structure between the protective adhesive layer and the polarizer, the present application also sets the polarizer to cover at least part of the first retaining wall structure, and through the extension design of the polarizer, it is ensured that the edge of the polarizer can be closely matched with the protective adhesive layer. Even if the polarizer shrinks, there will be no gap between the edge of the polarizer and the protective adhesive layer, and thus no water vapor intrusion path will be formed, effectively preventing water vapor penetration. In this way, the protection of the polarizer boundary is further strengthened, and the packaging effect of the non-display area is optimized together with the protective adhesive layer, significantly improving the reliability and service life of the display panel in high temperature and high humidity environments.

[0032] Other advantages, objectives and features of the present application will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or can be taught from the practice of the present application to some extent. The objectives and other advantages of the present application can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0034] Figure 1 This is a schematic diagram of a top view of a display panel in some embodiments of the present application;

[0035] Figure 2 A schematic diagram of a cross-sectional structure of a display panel in some embodiments of the present application;

[0036] Figure 3 A schematic diagram of a top view of a display panel in some other embodiments of the present application;

[0037] Figure 4 for Figure 3 A schematic diagram of a top view of the structure of the first retaining wall structure in the display panel is shown;

[0038] Figure 5 A schematic diagram of a cross-sectional structure of a display panel in some other embodiments of the present application;

[0039] Figure 6 When the polarizer shrinks Figure 5 A schematic diagram of a cross-sectional structure of a display panel is shown;

[0040] Figure 7 In some embodiments of the present application, the first retaining wall structure is Figure 4 Schematic diagram of the cross section in the AA' direction;

[0041] Figure 8 In some embodiments of the present application, the first retaining wall structure is Figure 4 Schematic diagram of the cross section in the BB' direction;

[0042] Fig. 9 In some other embodiments of the present application, the first retaining wall structure is Figure 4 Schematic diagram of the cross section in the AA' direction;

[0043] Fig.10 This is a schematic diagram of the structure of a display device in some implementation modes of the present application.

[0044] Description of reference numerals:

[0045] 110, substrate; 110a, display area; 110b, non-display area; 110b', binding area; 120, protective adhesive layer; 130, polarizer; 131, first sub-polarizer; 132, second sub-polarizer; 140, first retaining wall structure; 141, embankment; 142, protrusion; 150, second retaining wall structure; 160, third retaining wall structure; 170, metal layer;

[0046] 1. Display device; 10. Display panel. DETAILED DESCRIPTION

[0047] In order to facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0049] It should be noted that when a structure is referred to as being "located" on another structure, it may be directly located on the other structure or there may be a structure in the middle. In the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity. It is understood that when a layer or structure is referred to as being "on" another layer or substrate, the layer or structure may be directly on the other layer or substrate, or there may be an intermediate layer. In addition, it is also understood that when a layer is referred to as being "between" two layers, the layer may be the only layer between the two layers, or there may be one or more intermediate layers. In addition, the same reference numerals always represent the same structure.

[0050] Hereinafter, although terms such as "first", "second", etc. may be used to describe various structures, these structures are not necessarily limited to the above terms. The above terms are only used to distinguish one structure from another. It will also be understood that expressions used in the singular include plural expressions unless the expression in the singular has an obviously different meaning in the context.

[0051] It should also be understood that the terms “include / comprising” or “having” and the like specify the presence of stated features, integers, structures, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, integers, structures, parts or combinations thereof.

[0052] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0053] Hybrid products are a type of display product that combines Glass (glass substrate) and TFE (Thin Film Encapsulation) technologies. They are widely used in display screens of various electronic devices such as mobile phones, tablets, and TVs. In hybrid products, in order to prevent water vapor erosion, COF (Chip On Film) surface sealing technology is usually used, and the POL (polarizer) boundary serves as the COF sealing barrier boundary. However, the POL material itself is not resistant to high temperatures. Especially in high temperature and high humidity environments, the POL material will shrink, resulting in the boundary between the POL and COF sealing being exposed, thus forming a water vapor penetration path. The penetration of water vapor will not only affect the performance of the display panel, but may also reduce the reliability and life of the product.

[0054] In view of the above shortcomings, the embodiments of the present application provide a display panel and a display device, which can avoid the formation of a water vapor intrusion path at the edge of the polarizer, effectively prevent water vapor penetration, and significantly improve the reliability and service life of the display panel. The details will be described in subsequent embodiments.

[0055] On the one hand, the present application provides a display panel. The display panel involved in the present application may include an organic light emitting diode display panel (Organic Light Emitting Diode, referred to as OLED), a quantum dot electroluminescent display panel (Quantum Dot Light Emitting Diodes, referred to as QLED), a liquid crystal display panel (Liquid Crystal Display, referred to as LCD), a sub-millimeter light emitting diode display (Mini Light Emitting Diode Display, referred to as Mini LED) or a micro light emitting diode display (Micro Light Emitting Diode Display, referred to as MicroLED), etc., but is not limited thereto. The embodiment of the present application is described by taking the display panel as an OLED display panel as an example.

[0056] See also Figure 1 and Figure 2 The display panel provided in the present application specifically includes: a substrate 110 , a protective adhesive layer 120 , a polarizer 130 and a first retaining wall structure 140 .

[0057] The substrate 110 has a display area 110a and a non-display area 110b, and the non-display area 110b includes a binding area 110b' located on a side away from the display area 110a; the protective adhesive layer 120 is arranged in the non-display area 110b and at least covers the binding area 110b'; the polarizer 130 is at least located in the display area 110a and extends at least to the edge of the protective adhesive layer 120; the first retaining wall structure 140 is arranged in the non-display area 110b and is located between the protective adhesive layer 120 and the polarizer 130; the polarizer 130 covers at least a portion of the first retaining wall structure 140.

[0058] The present application provides a protective adhesive layer 120 in the non-display area 110b to cover the binding area 110b', thereby playing a preliminary role in blocking water vapor. The protective adhesive layer 120 can seal the binding area 110b', prevent the binding area 110b' from being directly exposed to the external environment, and weaken the impact of water vapor erosion.

[0059] like Figure 1 and Figure 2 As shown, the first retaining wall structure 140 is arranged between the protective adhesive layer 120 and the polarizer 130, and can form a barrier between the protective adhesive layer 120 and the polarizer 130, blocking the path of water vapor invading through the boundary of the polarizer 130, avoiding the adverse effect of water vapor erosion on the performance of the display panel, thereby improving the overall protection performance of the display panel.

[0060] On the basis of setting the first retaining wall structure 140 between the protective adhesive layer 120 and the polarizer 130, the present application further sets the polarizer 130 to cover at least part of the first retaining wall structure 140, and ensures that the edge of the polarizer 130 can fit tightly with the protective adhesive layer 120 by extending the polarizer 130.

[0061] It is worth noting that in the display panel manufacturing process of the present application, the polarizer 130 can be attached after the protective adhesive layer 120 is formed. By adopting such a process sequence, it is convenient for the boundary of the polarizer 130 and the protective adhesive layer 120 to overlap, so that the polarizer 130 covers at least a portion of the first retaining wall structure 140. Even if the polarizer 130 shrinks, since the polarizer 130 is set to cover at least a portion of the first retaining wall structure 140, it will not cause the substrate 110 to be exposed, thereby effectively preventing water vapor from invading from the boundary of the polarizer 130, avoiding the adverse effects of water vapor erosion on the performance of the display panel. Therefore, the process sequence of first forming the protective adhesive layer 120 and then attaching the polarizer 130 can better solve the problem of water vapor penetration.

[0062] See also Figures 3 to 5In some embodiments, the first retaining wall structure 140 specifically includes a bank 141 and a plurality of protrusions 142. The plurality of protrusions 142 are disposed on one side of the bank 141 close to the binding region 110b', and the protrusions 142 and the surface of the protective adhesive layer 120 facing the protrusions 142 are wedged with each other.

[0063] In the above embodiment, the first retaining wall structure 140 has a sawtooth design on one side close to the binding area 110b', and the embankment 141 provides the support and stability required by the first retaining wall structure 140. By providing a plurality of protrusions 142 that are wedged with the protective adhesive layer 120, a tighter fit is achieved between the first retaining wall structure 140 and the protective adhesive layer 120, thereby avoiding the generation of gaps in the protective adhesive layer 120 during the packaging process and further enhancing the barrier effect against water vapor.

[0064] Polarization segment difference refers to the phenomenon that the light transmittance on the surface of the polarizer is inconsistent due to the uneven thickness of the adhesive layer, resulting in uneven display effect. In the above embodiment, the first retaining wall structure 140 adopts the above-mentioned sawtooth design, which can also promote the uniform flow of the protective adhesive layer 120, avoid excessive accumulation of the protective adhesive material at the first retaining wall structure 140, and thus make the distribution of the protective adhesive layer 120 under the polarizer 130 more uniform. As a result, the thickness of the protective adhesive layer 120 under the polarizer 130 is reduced, and the polarization segment difference can be effectively reduced, thereby improving the consistency of the visual effect of the display panel, which is conducive to improving the overall display quality of the display panel.

[0065] Please combine Figure 5 and Figure 6 It is understood that even if the polarizer 130 shrinks, there will be no gap between the edge of the polarizer 130 and the protective adhesive layer 120, and thus no water vapor intrusion path will be formed, effectively preventing water vapor penetration. It can be seen that the above embodiment can further strengthen the protection of the boundary of the polarizer 130, and cooperate with the protective adhesive layer 120 to optimize the packaging effect of the non-display area 110b, significantly improving the reliability and service life of the display panel in a high temperature and high humidity environment.

[0066] The present application embodiment does not specifically limit the thickness of the bank 141 and the protrusion 142. In some embodiments, Figure 7 and Figure 8 As shown, the thickness of the bank 141 may be the same or substantially the same as the thickness of the protrusion 142 .

[0067] In other embodiments, Fig. 9As shown, the thickness of the bank 141 can be greater than the thickness of the protrusion 142. As the supporting part of the first retaining wall structure 140, the bank 141 has a larger thickness, which helps to provide a stronger supporting force, making the first retaining wall structure 140 more stable as a whole, and avoiding deformation or collapse due to uneven force in subsequent processes. Relatively speaking, the protrusion 142 has a smaller thickness, which is more conducive to guiding the uniform flow of the protective glue material, avoiding local sealing glue accumulation, and significantly reducing the thickness of the protective glue layer 120 under the polarizer 130, thereby more effectively reducing the polarizer segment difference.

[0068] Please continue reading Figure 3 and Figure 5 In some embodiments, the protective adhesive layer 120 also covers the plurality of protrusions 142 and contacts the embankment 141 .

[0069] The protective adhesive layer 120 covers the protrusion 142 and contacts the bank 141, which helps the flow and solidification of the protective adhesive material during the packaging process and enhances the sealing of the protective adhesive layer 120. Therefore, the above embodiment makes the combination between the protective adhesive layer 120 and the first retaining wall structure 140 tighter, further improves the water vapor protection performance of the display panel in a high temperature and high humidity environment, and is conducive to enhancing the reliability of the display panel.

[0070] The present application also does not specifically limit the thickness of the protective adhesive layer 120. In some embodiments, the thickness of the protective adhesive layer 120 on the side in contact with the bank 141 (eg Figure 5 t1) is less than the maximum thickness of the protective adhesive layer 120 (eg Figure 5 (shown as t2 in the figure).

[0071] The thickness of the protective adhesive layer 120 is relatively small in the contact area of ​​the bank 141, which can avoid problems such as uneven packaging or easy cracking and deformation caused by excessive thickness, thereby making the contact between the protective adhesive layer 120 and the bank 141 closer. Therefore, the above embodiment can prevent the protective adhesive layer 120 from falling off or shifting due to external forces in subsequent processes, ensure that water vapor is difficult to penetrate in this area, and further improve the water vapor protection performance of the display panel.

[0072] In some embodiments, the maximum thickness of the protective adhesive layer 120 (eg Figure 5 The thickness of the bank 141 is greater than that of the bank 141. Therefore, it can be ensured that during the packaging process, the protective adhesive layer 120 can basically cover and seal the bank 141 and its surrounding area, thereby providing a stronger sealing effect, preventing water vapor or other external pollutants (such as dust) from entering the display panel along the bank 141, further improving the protection performance of the display panel, and enhancing the reliability of the display panel.

[0073] Moreover, a thicker protective adhesive layer 120 is also conducive to its uniform distribution, especially in the contact area between the embankment 141 and the protective adhesive layer 120 , thereby reducing packaging defects caused by insufficient or uneven filling of the protective adhesive layer 120 , and enabling the protective adhesive layer 120 to be in closer contact with the first retaining wall structure 140 .

[0074] Please continue reading Figure 5 In some embodiments, the polarizer 130 specifically includes a first sub-polarizer 131 located in the display area 110a, and a second sub-polarizer 132 located in the non-display area 110b. The second sub-polarizer 132 covers a portion of the protective adhesive layer 120, and the maximum thickness of the protective adhesive layer 120 (e.g. Figure 5 The point corresponding to the point t2 in FIG. 1 is higher than the lowest point of the second sub-polarizer 132 and lower than the highest point of the second sub-polarizer 132.

[0075] In the above embodiment, the maximum thickness of the protective adhesive layer 120 (eg Figure 5 The second polarizer 130 is located in the middle area of ​​the second sub-polarizer 132, which can avoid the generation of gaps between the polarizer 130 and the protective adhesive layer 120, reduce the risk of water vapor penetration, and further improve the reliability of the display panel. At the same time, it can also avoid the adverse effect on the optical properties of the display panel caused by the excessive thickness of the protective adhesive layer 120, ensure that the refractive index and / or transmittance of the light passing through the polarizer 130 can be maintained within the expected range, so that the display panel maintains a good optical effect and display quality.

[0076] Please continue reading Figure 5 In some embodiments, the orthographic projection of the first retaining wall structure 140 on the substrate 110 is located within the orthographic projection of the polarizer 130 on the substrate 110 , and there is a gap between the orthographic projection of the first retaining wall structure 140 and the orthographic projection of the polarizer 130 on the substrate 110 .

[0077] In the above embodiment, there is a gap between the orthographic projections of the first retaining wall structure 140 and the polarizer 130 on the substrate 110. Figure 6 It can be understood that even if the polarizer material is not resistant to high temperature and shrinks, the boundary between the protective adhesive layer 120 and the first retaining wall structure 140 will not be exposed, and a water vapor penetration path cannot be formed, making it more difficult for water vapor to penetrate into the display panel through the edge of the polarizer 130, and the first retaining wall structure 140 can more effectively block water vapor. Therefore, the above embodiment helps to further prevent water vapor from eroding the display panel and enhance the water vapor barrier effect.

[0078] The embodiment of the present application does not specifically limit the distance between the orthographic projection of the first retaining wall structure 140 on the substrate 110 and the orthographic projection of the polarizer 130 on the substrate 110. In some embodiments, considering that a too large distance between the two may have an adverse effect on the optical properties of the display panel, and a too small distance between the two may affect the water vapor barrier effect of the first retaining wall structure 140, the distance between the orthographic projection of the first retaining wall structure 140 on the substrate 110 and the orthographic projection of the polarizer 130 on the substrate 110 is controlled within 50μm to 150μm, ensuring that when achieving a good water vapor protection effect, it will not affect other design requirements of the display panel.

[0079] Exemplarily, the substrate 110 may specifically include a glass substrate. In some embodiments, the display panel further includes a thin film encapsulation (TFE) layer, which is at least located above the display area 110a of the substrate 110, thereby realizing a hybrid encapsulation structure, that is, a composite structure including a glass substrate and a thin film encapsulation layer.

[0080] In the hybrid packaging structure, the glass substrate can provide high light transmittance and sufficient mechanical strength, and the thin film packaging layer can be used to block the intrusion of water vapor and provide effective airtight packaging, thereby improving the reliability and service life of the display panel.

[0081] As an example, the thin film encapsulation layer may extend to the non-display area 110 b to cover part or all of the protective adhesive layer 120 , thereby further optimizing the encapsulation effect and reducing the risk of water vapor penetration.

[0082] In some possible implementations, the thin film encapsulation layer may cover the protective adhesive layer 120 , the polarizer 130 and the first retaining wall structure 140 .

[0083] Please continue reading Figure 1 and Figure 3 In some embodiments, a second retaining wall structure 150 and a third retaining wall structure 160 are further disposed on the substrate 110. It is worth noting that the first retaining wall structure 140, the second retaining wall structure 150 and the third retaining wall structure 160 are sequentially arranged in a direction from the non-display area 110b to the display area 110a.

[0084] For example, the second retaining wall structure 150 can be used to prevent the thin film encapsulation layer from overflowing at the edge of the display panel during the encapsulation process. Providing the second retaining wall structure 150 to block the overflow helps to ensure the reliability of the thin film encapsulation layer.

[0085] For example, the third retaining wall structure 160 can be disposed outside the second retaining wall structure 150, thereby further suppressing the risk of the thin film encapsulation layer overflowing. For example, the third retaining wall structure 160 can serve as a second line of defense. When the thin film encapsulation layer exceeds the blocking range of the second retaining wall structure 150, the third retaining wall structure 160 can continue to block the thin film encapsulation layer from overflowing, thereby preventing it from causing pollution or affecting other parts of the display panel.

[0086] It is worth noting that Figure 1 and Figure 3 As shown, unlike the first retaining wall structure 140, the second retaining wall structure 150 and the third retaining wall structure 160 are arranged below the polarizer 130, rather than between the protective adhesive layer 120 and the polarizer 130. The first retaining wall structure 140 is arranged between the protective adhesive layer 120 and the polarizer 130 to prevent water vapor from invading the interior of the display panel through the boundary of the polarizer 130. The second retaining wall structure 150 and the third retaining wall structure 160 mainly play a role in preventing the thin film encapsulation layer from overflowing during the encapsulation process. The three cooperate with each other to jointly improve the encapsulation quality and protection performance of the display panel to ensure the reliability and stability of the display panel in various environments.

[0087] In addition, the display panel may also include existing structures in other display panels, such as Figure 3 The metal layer 170 shown may be located above the substrate 110 and disposed below the protective adhesive layer 120, the polarizer 130 and the first retaining wall structure 140. In some embodiments, the metal layer 170 may be electrically connected to the driving circuit in the display panel to achieve transmission of the driving signal. For example, the metal layer 170 may be a multilayer metal structure composed of a Ti (titanium) layer / Al (aluminum) layer / Ti layer, which is used to connect and transmit PVDD signals and PVEE signals. The specific structure of the metal layer 170 is not the focus of the present application, and the specific structure of the metal layer 170 may also refer to the relevant technology, which will not be further described here.

[0088] Based on the same inventive concept, the present application also provides a display device. Fig.10 The display device 1 includes the display panel 10 provided in the above embodiment. The display device 1 can also achieve the technical effects that the above display panel 10 can achieve, which will not be described in detail here.

[0089] It can be understood that the display device 1 in the embodiment of the present application can be an OLED display device, a Micro-LED display device, electronic paper, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, a wearable device, an Internet of Things device, or any other product or component with a display function, and the embodiment of the present application is not limited to this.

[0090] In the description of this specification, the description with reference to the terms "some embodiments", "as an example", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0091] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features of the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: include: A substrate having a display area and a non-display area, wherein the non-display area includes a binding area located at a side away from the display area; A protective adhesive layer, disposed in the non-display area and at least covering the binding area; A polarizer, located at least in the display area and extending at least to the edge of the protective adhesive layer; The first retaining wall structure is disposed in the non-display area and is located between the protective adhesive layer and the polarizer; the polarizer covers at least a portion of the first retaining wall structure.

2. The display panel according to claim 1, characterized in that: The first retaining wall structure comprises: embankment; A plurality of protrusions are arranged on one side of the bank close to the binding area, and the protrusions and the surface of the protective adhesive layer facing the protrusions are wedged with each other.

3. The display panel according to claim 2, characterized in that: The thickness of the bank is greater than the thickness of the protrusion.

4. The display panel according to claim 3, characterized in that: The protective adhesive layer also covers the plurality of protruding portions and contacts the bank portion.

5. The display panel according to claim 4, characterized in that: The thickness of the side of the protective adhesive layer in contact with the bank is smaller than the maximum thickness of the protective adhesive layer.

6. The display panel according to claim 5, characterized in that: The maximum thickness of the protective adhesive layer is greater than the thickness of the bank.

7. The display panel according to claim 5, characterized in that: The polarizer includes a first sub-polarizer located in the display area and a second sub-polarizer located in the non-display area; The protective adhesive layer covering the portion of the second sub-polarizer has a position corresponding to a maximum thickness thereof in the thickness direction of the display panel that is higher than the lowest point of the second sub-polarizer and lower than the highest point of the second sub-polarizer.

8. The display panel according to claim 1, characterized in that: The orthographic projection of the first retaining wall structure on the substrate is located within the orthographic projection of the polarizer on the substrate, and there is a distance between the first retaining wall structure and the orthographic projection of the polarizer on the substrate.

9. The display panel according to claim 8, characterized in that: The distance between the orthographic projection of the first retaining wall structure on the substrate and the orthographic projection of the polarizer on the substrate is within 50 μm to 150 μm.

10. The display panel according to claim 1, characterized in that: The substrate is also provided with a second retaining wall structure and a third retaining wall structure; The first retaining wall structure, the second retaining wall structure and the third retaining wall structure are sequentially arranged at intervals along a direction from the non-display area to the display area.

11. The display panel according to any one of claims 1 to 10, characterized in that: The substrate comprises a glass substrate; The display panel further includes a thin film encapsulation layer, and the thin film encapsulation layer is at least located above the display area of ​​the substrate.

12. A display device, characterized in that: The invention comprises the display panel as claimed in any one of claims 1 to 11.

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