Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises: a substrate having a display area and a non-display area, the non-display area comprising a binding area located away from the display area; a protective adhesive layer arranged in the non-display area and covering at least the binding area; a polarizer located at least in the display area and extending at least to the edge of the protective adhesive layer; a first barrier structure arranged in the non-display area and located between the protective adhesive layer and the polarizer; and the polarizer covering at least part of the first barrier structure. The display panel can avoid forming a water vapor invasion path at the edge of the polarizer, effectively prevent water vapor penetration, and significantly improve the reliability and service life of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] Hybrid products are display products that combine Glass (glass substrate) and TFE (Thin Film Encapsulation) technologies, and are widely used in the displays of various electronic devices such as mobile phones, tablets, and televisions.

[0003] In hybrid products, COF (Chip On Film) surface encapsulation technology is typically used to prevent moisture erosion. The POL (polarizer) boundary serves as the COF encapsulation barrier boundary.

[0004] However, POL material itself is not resistant to high temperatures, especially in high-temperature and high-humidity environments. POL material will shrink, exposing the boundary between POL and COF sealant, thus creating a path for moisture penetration. Moisture penetration not only affects the performance of the display panel but may also reduce product reliability and lifespan.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

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

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

[0008] A substrate having a display area and a non-display area, the non-display area including a bonding area located on the side away from the display area;

[0009] A protective adhesive layer is disposed in the non-display area and at least covers the bonding area;

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

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

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

[0013] Dike section;

[0014] Multiple protrusions are provided on the side of the embankment near the binding area, and the protrusions and the surface of the protective adhesive layer facing the protrusions are wedged together.

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

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

[0017] In some embodiments, the thickness of the protective adhesive layer on the side that contacts the embankment is less than the maximum thickness of the protective adhesive layer.

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

[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 second sub-polarizer has a maximum thickness at a point that is higher than the lowest point of the second sub-polarizer and lower than the highest point of the second sub-polarizer in the thickness direction of the display panel.

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

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

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

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

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

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

[0027] According to some embodiments, this application also provides a display device, including the display panel as described in the above embodiments.

[0028] This application may have, or at least has, the following advantages:

[0029] This application provides a protective adhesive layer in the non-display area to cover the bonding area, thus providing initial moisture barrier. The protective adhesive layer seals the bonding area, preventing direct exposure to the external environment and mitigating the impact of moisture erosion.

[0030] The first barrier structure is set 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 moisture intrusion through the polarizer boundary, avoiding the adverse effects of moisture erosion on the display panel performance, thereby improving the overall protective performance of the display panel.

[0031] Building upon the existing first barrier structure between the protective adhesive layer and the polarizer, this application further configures the polarizer to cover at least a portion of the first barrier structure. By extending the polarizer's design, it ensures a tight fit between the polarizer's edge and the protective adhesive layer. Even if the polarizer retracts, no gaps will form between the polarizer's edge and the protective adhesive layer, thus preventing moisture intrusion and effectively preventing water vapor penetration. This further strengthens the protection of the polarizer's boundary and, together with the protective adhesive layer, optimizes the encapsulation effect of the non-display area, significantly improving the reliability and lifespan of the display panel in high-temperature and high-humidity environments.

[0032] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application can be realized and obtained through the following description. Attached Figure Description

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

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

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

[0036] Figure 3 This is a top view of the display panel in some other embodiments of this application;

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

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

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

[0040] Figure 7 In some embodiments of this application, the first retaining wall structure is in Figure 4 A cross-sectional view along the AA' direction;

[0041] Figure 8 In some embodiments of this application, the first retaining wall structure is in Figure 4 A cross-sectional view along the BB' direction;

[0042] Figure 9 In other embodiments of this application, the first retaining wall structure is in Figure 4 A cross-sectional view along the AA' direction;

[0043] Figure 10 This is a schematic diagram of the structure of the display device in some embodiments of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 110, Substrate; 110a, Display area; 110b, Non-display area; 110b', Bonding area; 120, Protective adhesive layer; 130, Polarizer; 131, First sub-polarizer; 132, Second sub-polarizer; 140, First barrier structure; 141, Embankment; 142, Protrusion; 150, Second barrier structure; 160, Third barrier structure; 170, Metal layer;

[0046] 1. Display device; 10. Display panel. Detailed Implementation

[0047] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

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

[0050] In the following text, although terms such as “first” and “second” may be used to describe various structures, these structures are not necessarily limited to the terms above. The terms above are only used to distinguish one structure from another. It will also be understood that expressions used in the singular form include plural expressions, unless the singular form has a distinctly different meaning in the context.

[0051] It should also be understood that the terms “including / comprise” or “have” specify the presence of the stated features, whole, structure, part or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, structures, parts or combinations thereof.

[0052] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0053] Hybrid displays combine Glass (glass substrate) and TFE (Thin Film Encapsulation) technologies and are widely used in the displays of various electronic devices such as mobile phones, tablets, and televisions. In hybrid displays, COF (Chip On Film) surface encapsulation technology is typically used to prevent moisture intrusion, with the POL (polarizer) boundary serving as the COF encapsulation barrier. However, the POL material itself is not heat-resistant, especially in high-temperature and high-humidity environments. The POL material undergoes shrinkage, exposing the boundary between the POL and the COF encapsulation, thus creating a path for moisture penetration. Moisture penetration not only affects the performance of the display panel but may also reduce the product's reliability and lifespan.

[0054] In view of the above-mentioned shortcomings, this application provides a display panel and display device that can avoid the formation of moisture intrusion paths at the edge of the polarizer, effectively prevent moisture penetration, and significantly improve the reliability and service life of the display panel. Details will be described in subsequent embodiments.

[0055] This application provides a display panel. The display panel involved in this application may include organic light-emitting diode (OLED) display panels, quantum dot light-emitting diode (QLED) display panels, liquid crystal display (LCD) panels, mini light-emitting diode (Mini LED) displays, or micro light-emitting diode (Mic roLED) displays, etc., but is not limited to these. This application uses an OLED display panel as an example for illustration.

[0056] Please see Figure 1 and Figure 2 The display panel provided in this application specifically includes: a substrate 110, a protective adhesive layer 120, a polarizer 130, and a first barrier structure 140.

[0057] The substrate 110 has a display area 110a and a non-display area 110b. The non-display area 110b includes a bonding area 110b' located on the side away from the display area 110a. A protective adhesive layer 120 is disposed in the non-display area 110b and at least covers the bonding area 110b'. A polarizer 130 is located at least in the display area 110a and extends at least to the edge of the protective adhesive layer 120. A first barrier structure 140 is disposed 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 barrier structure 140.

[0058] This application provides a protective adhesive layer 120 in the non-display area 110b to cover the bonding area 110b', thus providing initial moisture barrier. The protective adhesive layer 120 seals the bonding area 110b', preventing it from being directly exposed to the external environment and mitigating the impact of moisture erosion.

[0059] like Figure 1 and Figure 2 As shown, the first barrier structure 140 is disposed between the protective adhesive layer 120 and the polarizer 130, which can form a barrier between the protective adhesive layer 120 and the polarizer 130, blocking the path of water vapor intrusion through the boundary of the polarizer 130, avoiding water vapor erosion from adversely affecting the performance of the display panel, thereby improving the overall protective performance of the display panel.

[0060] Based on the provision of a first barrier structure 140 between the protective adhesive layer 120 and the polarizer 130, this application further provides that the polarizer 130 is configured to cover at least part of the first barrier structure 140. By extending the polarizer 130, it is ensured that the edge of the polarizer 130 can fit tightly with the protective adhesive layer 120.

[0061] It is worth noting that in the display panel manufacturing process of this application, the polarizer 130 can be attached after the protective adhesive layer 120 is formed. By adopting this process sequence, the polarizer 130 and the protective adhesive layer 120 can overlap, allowing the polarizer 130 to cover at least a portion of the first barrier structure 140. Even if the polarizer 130 shrinks inward, because it is configured to cover at least a portion of the first barrier structure 140, the substrate 110 will not be exposed, effectively preventing moisture from penetrating from the boundary of the polarizer 130 and avoiding the adverse effects of moisture erosion on the display panel performance. Therefore, adopting the process sequence of forming the protective adhesive layer 120 first and then attaching the polarizer 130 can better solve the problem of moisture penetration.

[0062] Please see Figures 3 to 5In some embodiments, the first retaining wall structure 140 specifically includes a dam 141 and a plurality of protrusions 142. The plurality of protrusions 142 are disposed on the side of the dam 141 near the binding area 110b', and the protrusions 142 and the surface of the protective adhesive layer 120 facing the protrusions 142 are wedged together.

[0063] In the above embodiment, the side of the first barrier structure 140 near the binding area 110b' adopts a sawtooth design. The embankment 141 provides the required support and stability for the first barrier structure 140. By setting multiple protrusions 142 that wedge with the protective adhesive layer 120, a tighter fit is achieved between the first barrier structure 140 and the protective adhesive layer 120, preventing gaps from forming in the protective adhesive layer 120 during the encapsulation process and further enhancing the barrier effect against moisture.

[0064] Polarization segment aberration refers to the phenomenon where uneven light transmission and inconsistent display effects occur due to uneven adhesive layer thickness on the surface of the polarizer. In the above embodiment, the first barrier structure 140 adopts the aforementioned serrated design, which can also promote the uniform flow of the protective adhesive layer 120 and prevent excessive accumulation of the protective adhesive material at the first barrier structure 140, thereby making the distribution of the protective adhesive layer 120 under the polarizer 130 more uniform. This reduces the thickness of the protective adhesive layer 120 under the polarizer 130, effectively reducing polarization segment aberration, improving the visual consistency of the display panel, and contributing to 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 inward, no gap will be formed between the edge of the polarizer 130 and the protective adhesive layer 120, thus preventing moisture intrusion and effectively preventing moisture penetration. Therefore, the above embodiment can further enhance the protection of the polarizer 130 boundary and, together with the protective adhesive layer 120, optimize the encapsulation effect of the non-display area 110b, significantly improving the reliability and lifespan of the display panel in high-temperature and high-humidity environments.

[0066] This application does not specifically limit the thickness of the embankment 141 and the protrusion 142 in its embodiments. In some embodiments, such as Figure 7 and Figure 8 As shown, the thickness of the embankment 141 can be the same as or approximately the same as the thickness of the protrusion 142.

[0067] In other implementations, such as Figure 9As shown, the thickness of the embankment 141 can be greater than the thickness of the protrusion 142. The greater thickness of the embankment 141, serving as the supporting portion of the first retaining wall structure 140, helps provide stronger support, making the first retaining wall structure 140 more stable overall and preventing deformation or collapse due to uneven stress during subsequent processes. In contrast, the smaller thickness of the protrusion 142 is more conducive to guiding the uniform flow of the protective adhesive material, avoiding localized adhesive buildup, and significantly reducing the thickness of the protective adhesive layer 120 below the polarizer 130, thereby more effectively reducing polarization segment aberration.

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

[0069] The protective adhesive layer 120 covers the protrusion 142 and contacts the embankment 141, which facilitates the flow and curing of the protective adhesive material during the encapsulation process and enhances the sealing performance of the protective adhesive layer 120. Therefore, the above embodiment makes the bond between the protective adhesive layer 120 and the first barrier structure 140 tighter, further improving the moisture protection performance of the display panel in high temperature and high humidity environments, and thus enhancing the reliability of the display panel.

[0070] The thickness of the protective adhesive layer 120 is not specifically limited in this embodiment. In some embodiments, the thickness of the side of the protective adhesive layer 120 that contacts the embankment 141 (e.g.) Figure 5 (as shown in t1) is less than the maximum thickness of the protective adhesive layer 120 (e.g.) Figure 5 (as shown in t2).

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

[0072] In some embodiments, the maximum thickness of the protective adhesive layer 120 (e.g.) Figure 5 The thickness of the protective adhesive layer 120 (as shown in t2) is greater than that of the dike 141. This ensures that during the encapsulation process, the protective adhesive layer 120 can substantially cover and seal the dike 141 and its surrounding area, thereby providing a stronger seal and preventing moisture or other external contaminants (such as dust) from entering the display panel along the dike 141, further enhancing the protective performance of the display panel and improving its reliability.

[0073] Furthermore, the thicker protective adhesive layer 120 is conducive to its uniform distribution, especially in the contact area between the dike 141 and the protective adhesive layer 120, thereby reducing encapsulation defects caused by insufficient or uneven filling of the protective adhesive layer 120, and enabling the protective adhesive layer 120 to make 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 protective adhesive layer 120 covered by the second sub-polarizer 132 has a maximum thickness (e.g., [missing information]) in the thickness direction of the display panel. Figure 5 The position corresponding to t2 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 embodiments, the maximum thickness of the protective adhesive layer 120 (e.g.) Figure 5 As shown in t2, the polarizer 130 is located in the middle region of the second sub-polarizer 132. This design avoids gaps between the polarizer 130 and the protective adhesive layer 120, reducing the risk of moisture penetration and further improving the reliability of the display panel. Simultaneously, it prevents the protective adhesive layer 120 from being too thick, thus avoiding adverse effects on the optical properties of the display panel and ensuring that the refractive index and / or transmittance of light passing through the polarizer 130 remain within the expected range, maintaining good optical performance and display quality.

[0076] Please continue reading. Figure 5 In some embodiments, the orthographic projection of the first barrier 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 first barrier 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 orthogonal projections of the first barrier structure 140 and the polarizer 130 onto the substrate 110. Figure 6 It is understandable that even if the polarizer material is not heat-resistant and shrinks, the boundary between the protective adhesive layer 120 and the first barrier structure 140 will not be exposed, preventing the formation of a moisture penetration path. This makes it even more difficult for moisture to penetrate into the display panel through the edge of the polarizer 130, and the first barrier structure 140 can more effectively block moisture. Therefore, the above-described embodiment helps to further prevent moisture from corroding the display panel and enhances the moisture barrier effect.

[0078] In this embodiment, the spacing between the orthographic projection of the first barrier structure 140 on the substrate 110 and the orthographic projection of the polarizer 130 on the substrate 110 is not specifically limited. In some embodiments, considering that an excessively large spacing may adversely affect the optical characteristics of the display panel, while an excessively small spacing may affect the moisture barrier effect of the first barrier structure 140, the spacing between the orthographic projection of the first barrier structure 140 on the substrate 110 and the orthographic projection of the polarizer 130 on the substrate 110 is controlled within 50μm to 150μm to ensure that good moisture protection is achieved without affecting other design requirements of the display panel.

[0079] For example, substrate 110 may specifically include a glass substrate. In some embodiments, the display panel further includes a thin-film encapsulation (TFE) layer, which is located at least above the display area 110a of 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 provides high light transmittance and sufficient mechanical strength, while the thin film encapsulation layer can be used to block the intrusion of moisture and provide effective hermetic packaging, thereby improving the reliability and service life of the display panel.

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

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

[0083] Please continue reading. Figure 1 and Figure 3 In some embodiments, a second barrier structure 150 and a third barrier structure 160 are also provided on the substrate 110. It is worth noting that the first barrier structure 140, the second barrier structure 150 and the third barrier structure 160 are arranged sequentially at intervals along the direction from the non-display area 110b toward the display area 110a.

[0084] For example, the second barrier 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. By setting the second barrier structure 150 to block the overflow, it helps to ensure the reliability of the thin film encapsulation layer.

[0085] For example, the third barrier structure 160 may be disposed outside the second barrier structure 150 to further suppress the risk of the thin film encapsulation layer overflowing. For instance, the third barrier structure 160 may serve as a second line of defense, continuing to block the overflow of the thin film encapsulation layer when it exceeds the blocking range of the second barrier structure 150, thus preventing it from contaminating or affecting other parts of the display panel.

[0086] It is worth noting that, such as Figure 1 and Figure 3 As shown, unlike the first barrier structure 140, the second barrier structure 150 and the third barrier structure 160 are positioned below the polarizer 130, rather than between the protective adhesive layer 120 and the polarizer 130. The first barrier structure 140, positioned between the protective adhesive layer 120 and the polarizer 130, prevents moisture from entering the display panel through the boundary of the polarizer 130. The second barrier structure 150 and the third barrier structure 160 primarily function to prevent the thin film encapsulation layer from overflowing during the encapsulation process. These three structures work together to improve the encapsulation quality and protective performance of the display panel, ensuring its reliability and stability under various environmental conditions.

[0087] Furthermore, the display panel may also include existing structures found in other display panels, such as Figure 3 The metal layer 170 shown can be located above the substrate 110 and below the protective adhesive layer 120, the polarizer 130, and the first barrier structure 140. In some embodiments, the metal layer 170 can be electrically connected to the driving circuit in the display panel to realize the transmission of driving signals. For example, the metal layer 170 can be a multilayer metal structure composed of a Ti (titanium) layer / Al (aluminum) layer / Ti layer for connecting and transmitting PVDD and PVEE signals. The specific structure of the metal layer 170 is not the focus of this application, and the specific structure of the metal layer 170 can also be referred to related technologies, and will not be described further here.

[0088] Based on the same inventive concept, embodiments of this application also provide a display device. Please refer to... Figure 10 The display device 1 includes the display panel 10 provided in the aforementioned embodiments. The display device 1 can also achieve all the technical effects that the aforementioned display panel 10 can achieve, and will not be described in detail here.

[0089] It is understood that the display device 1 in the embodiments of this application can be any product or component with display function, such as OLED display device, Micro-LED display device, electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, wearable device, Internet of Things device, etc., and the embodiments of this application do not limit it.

[0090] In the description of this specification, references to terms such as "some embodiments," "as an example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features of the above 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 embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: A substrate having a display area and a non-display area, the non-display area including a bonding area located on the side away from the display area; A protective adhesive layer is disposed in the non-display area and at least covers the bonding area; A polarizer is located at least in the display area and extends at least to the edge of the protective adhesive layer; A first barrier structure is disposed in the non-display area and located between the protective adhesive layer and the polarizer; the polarizer covers at least a portion of the first barrier structure; The first retaining wall structure includes a embankment and a plurality of protrusions. The plurality of protrusions are disposed on the side of the embankment near the binding area, and the protrusions are wedged into each other with the surface of the protective adhesive layer facing the protrusions.

2. The display panel according to claim 1, characterized in that, The thickness of the embankment is greater than the thickness of the protrusion.

3. The display panel according to claim 2, characterized in that, The protective adhesive layer also covers the plurality of the protrusions and is in contact with the embankment.

4. The display panel according to claim 3, characterized in that, The thickness of the protective adhesive layer on the side that contacts the embankment is less than the maximum thickness of the protective adhesive layer.

5. The display panel according to claim 4, characterized in that, The maximum thickness of the protective adhesive layer is greater than the thickness of the embankment.

6. The display panel according to claim 4, 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 second sub-polarizer has a maximum thickness at a point that is higher than the lowest point of the second sub-polarizer and lower than the highest point of the second sub-polarizer in the thickness direction of the display panel.

7. The display panel according to claim 1, characterized in that, The orthographic projection of the first barrier structure on the substrate is located within the orthographic projection of the polarizer on the substrate, and there is a gap between the first barrier structure and the orthographic projection of the polarizer on the substrate.

8. The display panel according to claim 7, characterized in that, The distance between the orthographic projection of the first barrier structure on the substrate and the orthographic projection of the polarizer on the substrate is within 50μm to 150μm.

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

10. The display panel according to any one of claims 1 to 9, characterized in that, The substrate includes a glass substrate; The display panel further includes a thin-film encapsulation layer, which is located at least above the display area of ​​the substrate.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 10.

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