Display panel and display device

Abstract

This application provides a display panel and a display device. The display panel includes: a first substrate, a first dam, a second dam, a thin-film encapsulation structure, and a touch line. The first dam is located on the first substrate, disposed in a non-display area and surrounding the display area. The first dam has a through opening, the opening direction of which is parallel to a first direction, which is the direction of the display area towards the non-display area. The second dam is located on the side of the first substrate near the first dam, disposed in the non-display area and surrounding the first dam, forming a closed-loop structure on the side of the second dam near the first dam. The thin-film encapsulation structure is located on the side of the first substrate near the first and second dams. The touch line is located on the side of the first and second dams away from the first substrate and bridges between the display area and the non-display area. This can improve TP defects caused by metal creep and photoresist residue.

Description

Technical Field

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

[0002] Improving the lifespan of OLEDs to commercial levels is one of the key issues in the industrialization of OLEDs. Water, oxygen, and dust coming into contact with the electrodes and even the organic layers can cause bubbles to form on the OLED electrodes, black spots to appear in the light-emitting areas during operation, accelerate device aging, and reduce the stability of the OLED. Isolating OLEDs from water, oxygen, and dust through device encapsulation is an effective way to improve their lifespan. AMOLED encapsulation technology has gradually iterated and updated with the rise of the AMOLED market, transitioning from metal cover encapsulation to glass cover encapsulation, and further developing towards thin-film encapsulation.

[0003] In thin-film encapsulation, during the process of leveling the material for the thin-film layer on the substrate, in order to prevent the material from overflowing into the area where the encapsulation film is formed, two dams are set in the frame area, namely inner dam1 and outer dam2. A groove is formed between dam1 and dam2. Usually, in order to prevent the material from overflowing outside the frame area, when the organic encapsulation material overflows from the inner dam1, it can only fill part of the groove area, but cannot completely fill the groove. Therefore, TP (Touch panel) defects will occur in the later touch layer manufacturing due to metal ramping and photoresist residue. Summary of the Invention

[0004] This application addresses the shortcomings of existing technologies by proposing a display panel and a display device to solve the problem of TP defects that occur during the fabrication of the touch layer in existing display panels.

[0005] According to a first aspect of this application, a display panel is provided. The display panel has a display area and a non-display area surrounding the display area, and includes: a first substrate, a first dam, a second dam, a thin-film encapsulation structure, and a touch line. The first dam is located on the first substrate, disposed in the non-display area, and surrounding the display area. The first dam has a through opening, the opening direction of which is parallel to a first direction, the direction in which the display area is closer to the non-display area. The second dam is located on the side of the first substrate near the first dam, disposed in the non-display area, and surrounding the first dam. The side of the second dam near the first dam forms a closed-loop structure. The thin-film encapsulation structure is located on the side of the first substrate near the first dam and the second dam, and includes a first inorganic layer, an organic layer, and a second inorganic layer stacked sequentially. The organic layer is disposed within the closed-loop structure formed by the second dam. The touch line is located on the side of the first dam and the second dam away from the first substrate and bridges between the display area and the non-display area.

[0006] As can be seen from the above embodiments, this application has a through opening in the first dam section, with the opening direction parallel to the direction from the display area to the non-display area. This allows the organic layer of the thin-film encapsulation structure to be coated onto the first substrate of the display panel during the thin-film encapsulation process. The material forming the organic layer can flow through the opening into the groove formed by the first and second dam sections, filling the space within the grooves. This facilitates the smooth stacking of subsequent film layers onto the first substrate. Therefore, when forming the touch layer, on the one hand, the touch lines can overlap more smoothly in the areas where the first and second dam sections are located, avoiding excessive folding of the touch lines due to unfilled grooves, thus reducing the risk of touch line breakage and poor contact. On the other hand, it avoids photoresist residue remaining in the grooves during subsequent photoresist deposition and etching, preventing the photoresist in the grooves from being etched away by the developer, reducing the risk of short circuits between touch lines due to photoresist, which could prevent the touch layer from achieving normal control.

[0007] In one embodiment, the openings are at least partially arrayed in the region of the first dam near the touch line.

[0008] In one embodiment, the orthographic projection of the touch line on the first substrate at least partially overlaps with the orthographic projection of the opening on the first substrate.

[0009] In one embodiment, the dimension of the first dam in the second direction is less than or equal to the dimension of the second dam in the second direction, and the second direction is perpendicular to the plane of the side of the first base near the first dam.

[0010] In one embodiment, the orthographic projection of the opening onto the plane of the side of the second dam closest to the first dam is a polygon, a circle, or an ellipse.

[0011] In one embodiment, the opening extends through the surface of the first dam portion away from the first base.

[0012] In one embodiment, the opening extends through the surface of the first dam near the first base.

[0013] In one embodiment, the size of the opening in the second direction is equal to the size of the first dam in the second direction.

[0014] In one embodiment, the dimension of the cross-section of the first dam section along the first direction on the side away from the first base is less than or equal to the dimension of the cross-section of the first dam section along the first direction on the side close to the first base.

[0015] In one embodiment, the dimension of the cross-section of the second dam along the first direction on the side away from the first base is less than or equal to the dimension of the cross-section of the second dam along the first direction on the side close to the first base.

[0016] In one embodiment, a gap exists between the first dam section and the second dam section. The dimension of the gap in the first direction is less than or equal to the dimension of the first dam section in the first direction. And / or, the dimension of the gap in the first direction is less than or equal to the dimension of the second dam section in the first direction.

[0017] In one embodiment, the average dimension of the first dam section along the opening direction is less than or equal to the average dimension of the second dam section along the opening direction.

[0018] In one embodiment, the display panel further includes a second substrate. The second substrate is disposed on the side of the thin-film encapsulation structure away from the first substrate, and is used to cooperate with the first substrate to achieve encapsulation.

[0019] According to a second aspect of the embodiments of this application, a display device is provided, including a display panel as described in the first aspect above.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] Figure 1 This is a top view of the display panel structure in related technologies;

[0023] Figure 2 yes Figure 1 Cross-sectional view along the dashed line O-O' in the middle;

[0024] Figure 3 This is a top view of the display panel structure in one embodiment provided in this application;

[0025] Figure 4 This application Figure 3 Cross-sectional view along the dashed line A-A' in the middle;

[0026] Figure 5 This application Figure 3 Cross-sectional view of the first dam section along the dashed line B-B' in the middle;

[0027] Figure 6 This is a top view of another display panel provided in an embodiment of this application;

[0028] Figure 7 This is a top view of another display panel provided in an embodiment of this application;

[0029] Figure 8 This is a cross-sectional view of the first dam section of another display panel provided in an embodiment of this application;

[0030] Figure 9 This is a cross-sectional view of the first dam section of another display panel provided in the embodiments of this application;

[0031] Figure 10 This is a cross-sectional view of the first dam section of another display panel provided in the embodiments of this application.

[0032] In the picture:

[0033] 10-Display panel; 101-Display area; 102-Non-display area; 1-First substrate; 2-First dam; 201-Opening; 3-Second dam; 4-Thin film encapsulation structure; 41-First inorganic layer; 42-Organic layer; 43-Second inorganic layer; 5-Touch line. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0035] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0036] Because the materials inside display panels are susceptible to corrosion from water and oxygen, leading to a reduced lifespan, display panels are typically encapsulated. Related technologies usually involve creating raised dams around the non-display area to prevent further diffusion and leakage of the encapsulation film material. However, with only a single-layer dam, on the one hand, its impact resistance is weak, making it easily broken by material flow and causing encapsulation failure; on the other hand, when the material flow rate is too high, a single-layer dam cannot control material leakage. Therefore, multiple dams are usually used to further prevent the leakage of the organic encapsulation layer (e.g., ...). Figure 1 When organic encapsulation material overflows from the inner dam to the inner side of the outer dam, the fluid properties of the organic encapsulation material and the blocking effect of the inner dam prevent the organic encapsulation material from filling the groove (e.g., Figure 2 This can lead to several issues during the later stages of touch layer fabrication. On one hand, the height difference caused by the organic encapsulation material's inability to flow smoothly within the groove can result in touch lines (metallic material) breaking due to climbing, leading to poor contact. On the other hand, if the groove is not filled, photoresist may remain inside, preventing it from being etched away by the developer. This can cause short circuits between touch lines, preventing the touch layer from achieving normal control.

[0037] The display panel and display device provided in this application are intended to solve the above-mentioned technical problems of the prior art.

[0038] The display panel and display device in the embodiments of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments may complement or combine with each other.

[0039] This application provides a display panel 10. For example... Figures 3-4As shown, the display panel 10 has a display area 101 and a non-display area 102 surrounding the display area 101, and includes: a first substrate 1, a first dam 2, a second dam 3, a thin film encapsulation structure 4, and a touch line 5. The first dam 2 is located on the first substrate 1, disposed in the non-display area 102 and surrounding the display area 101. The first dam 2 has a through opening 201, the direction of which is parallel to a first direction, which is the direction (X direction) of the display area 101 near the non-display area 102. The second dam 3 is located on the side of the first substrate 1 near the first dam 2, disposed in the non-display area 102 and surrounding the first dam 2. The side of the second dam 3 near the first dam 2 forms a closed loop structure. The thin film encapsulation structure 4 is located on the side of the first substrate 1 near the first dam 2 and the second dam 3, including a first inorganic layer 41, an organic layer 42 and a second inorganic layer 43 stacked sequentially. The organic layer 42 is disposed within the closed loop structure formed by the second dam 3. The touch line 5 is located on the side of the first dam 2 and the second dam 3 away from the first substrate 1 and spans between the display area 101 and the non-display area 102.

[0040] In this embodiment, a through opening 201 is provided in the first dam section 2, and the direction of the opening 201 is parallel to the direction from the display area 101 to the non-display area 102. This allows the material forming the organic layer 42 of the thin-film encapsulation structure 4 to flow through the opening 201 into the groove formed by the first dam section 2 and the second dam section 3 during the thin-film encapsulation process, filling the space within the groove (e.g., ...). Figure 4 As shown in the diagram, this facilitates the smooth deposition of subsequent film layers onto the first substrate 1. Therefore, during the formation of the touch layer, on the one hand, the touch lines 5 can overlap relatively smoothly in the areas where the first dam 2 and the second dam 3 are located, avoiding excessive folding of the touch lines 5 due to excess space caused by unfilled grooves, thus reducing the risk of touch line 5 breakage and poor contact. On the other hand, it can prevent photoresist residue from remaining in the grooves during the subsequent photoresist deposition and etching process, thus preventing the photoresist in the grooves from being etched away by the developer, reducing the risk of short circuits between touch lines 5 due to photoresist, which would prevent the touch layer from achieving normal control.

[0041] In some embodiments, the first substrate 1 may include an insulating material, such as glass, quartz, and polymeric resin. The first substrate 1 may be a rigid substrate or a flexible substrate, and a flexible substrate may be bendable, foldable, or rollable. For example, the first substrate 1 may include polymeric resins such as polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, or cellulose acetate propionate.

[0042] In some embodiments, the materials of the first dam section 2 and the second dam section 3 include organic materials such as acrylic resin, epoxy resin, phenolic resin, polyamide resin and polyimide resin.

[0043] In some embodiments, the first inorganic layer 41 and the second inorganic layer 43 in the thin-film encapsulation structure 4 are both formed by CVD (Chemical Vapor Deposition). The first inorganic layer 41 completely covers the first dam 2, the second dam 3, and the display area 101 and non-display area 102 of the first substrate 1. Either the first inorganic layer 41 or the second inorganic layer 43 can be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, or titanium oxide.

[0044] In some embodiments, the organic layer 42 is disposed on the side of the second dam 3 near the display area 101, which can prevent external interference factors such as water, oxygen, and small molecule particles from entering the area where the light-emitting layer is located, thereby extending the lifespan of the light-emitting layer material. The organic layer 42 can be made of the same material as the first dam 2 and the second dam 3. The organic layer 42 is deposited in a fluid state using processes such as inkjet printing (IJP), spraying, or spin coating, and then hardened.

[0045] In some embodiments, the second inorganic layer 43 covers the organic layer 42 and extends into the non-display area 102 to cover the first dam section 2 and the second dam section 3.

[0046] It should be noted that the display panel 10 in this application further comprises a TFT layer, an anode layer, a light-emitting layer, a cathode layer, and a touch layer formed between the first substrate 1 and the second substrate. Touch electrodes are formed on the touch layer, and the touch electrodes are connected to the touch driver via touch lines 5.

[0047] In some embodiments, multiple layers of dam sections can be constructed to provide layered barriers. For example, n layers of dam sections can be constructed, where n ≥ 2.

[0048] In some embodiments, such as Figures 5-6 As shown, the openings 201 are at least partially arrayed in the area of ​​the first dam 2 near the touch line 5. This allows for more targeted control of the uniform leveling of the organic layer 42 in the area where the touch line 5 is located, ensuring that when the touch line 5 is overlapped on the film layer, the groove between the first dam 2 and the second dam 3 is filled to avoid TP defects in the touch line 5.

[0049] In one example, such as Figure 7 As shown, the openings 201 are all arrayed on the first dam 2, and the material forming the organic layer 42 can be diffused and leveled in all directions to improve the leveling effect of the organic layer 42.

[0050] In some embodiments, the orthographic projection of the touch line 5 on the first substrate 1 at least partially overlaps with the orthographic projection of the opening 201 on the first substrate 1.

[0051] In one example, such as Figure 6 As shown, one part of the touch line 5 is located at the opening 201, and the other part of the touch line 5 is located at the non-opening 201 part of the first dam section 2. The first dam section 2 can, to a certain extent, support the touch line 5, thereby enhancing the structural stability of the touch line 5.

[0052] In one example, such as Figure 3 As shown, the orthographic projection of the touch line 5 on the first dam 2 is completely covered by the orthographic projection of the opening 201 on the first dam 2. At this time, the area above the first dam 2 of the touch line 5 is in complete contact with the thin film encapsulation structure 4 formed by leveling at the opening 201. Therefore, it is possible to avoid the formation of gaps between the touch line 5 and the thin film encapsulation structure 4 in the groove between the first dam 2 and the second dam 3, thereby reducing the risk of TP defects caused by metal ramping or photoresist residue.

[0053] In some embodiments, the dimension of the first dam portion 2 in the second direction is less than or equal to the dimension of the second dam portion 3 in the second direction Y, and the second direction is perpendicular to the plane of the first base 1 near the first dam portion 2. It should be noted that, in this embodiment, the second direction may be... Figure 4 in the Y direction.

[0054] In this embodiment, the height of the first dam 2 in the direction perpendicular to the first substrate 1 is less than or equal to the height of the second dam 3 in the direction perpendicular to the first substrate 1. The portion of the first dam 2, excluding the opening 201, acts as a blocking component, which can, to a certain extent, block the further diffusion of the fluid material of the organic layer 42, thereby initially reducing the impact force generated by the flow and diffusion of the material forming the organic layer 42 and absorbing some of the kinetic energy generated by the flow of the organic layer 42. At the same time, the opening 201 of the first dam 2 allows the material forming the organic layer 42 to flow smoothly into the groove formed between the first dam 2 and the second dam 3 to further fill the gap in the groove, so that the touch line 5 is completely attached to the surface of the thin-film encapsulation structure 4 away from the first substrate 1, avoiding the TP defect problem caused by metal ramping or photoresist residue.

[0055] In one example, such as Figures 8-10 As shown, the dimension of the first dam 2 in the second direction Y is smaller than the dimension of the second dam 3 in the second direction Y. This can improve the diffusion efficiency of the material forming the organic layer 42 while providing a barrier function.

[0056] In some embodiments, the orthographic projection of the opening 201 on the plane of the second dam 3 near the first dam 2 is a polygon, a circle, or an ellipse. Those skilled in the art can design it flexibly according to specific circumstances, and are not limited thereto.

[0057] In one example, such as Figure 5 As shown, the orthographic projection of opening 201 on the plane of the second dam section 3 near the first dam section 2 is a rectangle.

[0058] In some embodiments, the opening 201 extends through the surface of the first dam portion 2 away from the first base 1.

[0059] In this embodiment, a plurality of arrayed recesses (formed between adjacent protrusions) are provided on the side of the first dam 2 away from the first substrate 1. The material forming the organic layer 42 flows from the side of the first dam 2 near the display area 101 to the side of the second dam 3 near the display area 101 along the opening 201 formed between adjacent protrusions, promoting the leveling of the organic layer 42 and making the touch layer completely adhere to the side of the thin film encapsulation structure 4 away from the first substrate 1.

[0060] In some embodiments, the opening 201 extends through the surface of the first dam portion 2 near the first base 1.

[0061] In this embodiment, a plurality of arrayed recesses are provided on the side of the first dam 2 near the first base 1. The recesses and the surface of the first base 1 near the first dam 2 form through holes. The material forming the organic layer 42 flows through the through holes from the first dam 2 to the second dam 3. The closed-loop structure formed by the second dam 3 can prevent the organic layer 42 from overflowing toward the frame area.

[0062] In some embodiments, such as Figure 5 As shown, the size of the opening 201 in the second direction Y is equal to the size of the first dam 2 in the second direction Y.

[0063] In this embodiment, the opening 201 penetrates the first dam 2 in a direction perpendicular to the first substrate 1 and abuts against the surface of the first substrate 1 near the first dam 2. This allows the material forming the organic layer 42 to flow smoothly from the opening 201 to the side of the second dam 3 near the display area 101, thereby filling the groove so that the touch line 5 is completely attached to the surface of the thin film encapsulation structure 4 away from the first substrate 1, thus improving the TP defect problem.

[0064] In some embodiments, the dimension of the cross-section of the first dam portion 2 along the first direction on the side away from the first base 1 is less than or equal to the dimension of the cross-section of the first dam portion 2 along the first direction on the side closer to the first base 1. It should be noted that the first direction in this embodiment can be... Figure 4 The X direction in the equation.

[0065] In this embodiment, the surface area of ​​the first dam 2 on the side closer to the first substrate 1 is larger than that on the side farther away from the first substrate 1. Therefore, the first dam 2 has a larger stress-bearing area on the substrate and higher stability. When the membrane layer is stacked on top of the first dam 2, it will not crush the first dam 2, thus improving the structural stability of the first dam 2 and better resisting the impact of the material forming the organic layer 42.

[0066] In one example, such as Figure 4 As shown, the cross-section of the first dam section 2 is a regular cone shape.

[0067] In some embodiments, the dimension of the cross-section of the second dam portion 3 along the first direction X on the side away from the first base 1 is less than or equal to the dimension of the cross-section of the second dam portion 3 along the first direction X on the side close to the first base 1. The beneficial effects of this embodiment are the same as those of the foregoing embodiments, and will not be repeated here.

[0068] It should be noted that, in some embodiments, the dimension of the cross-section of the first dam 2 or the second dam 3 along the first direction X on the side away from the first substrate 1 can also be larger than the dimension of the cross-section of the first dam 2 or the second dam 3 along the first direction X on the side closer to the first substrate 1. In one example, the cross-sections of the first dam 2 and the second dam 3 are both inverted cones. In this case, when the material forming the organic layer 42 is about to overflow along the side edge of the dam, due to its inverted cone design, the upper projected area is larger than the lower area, which can limit the overflow and diffusion of the organic layer 42 material, achieving a better encapsulation effect.

[0069] In some embodiments, a gap exists between the first dam portion 2 and the second dam portion 3. The dimension of the gap in the first direction X is less than or equal to the dimension of the first dam portion 2 in the first direction X.

[0070] In this embodiment, a groove is formed between the first dam section 2 and the second dam section 3 to provide space for accommodating excess organic layer 42 material. Therefore, a double barrier wall is provided to improve the encapsulation success rate. At the same time, setting two closely spaced barrier walls can also enhance the dam section's pressure-bearing capacity against subsequently stacked film layers, ensuring the structural stability of the encapsulation layer.

[0071] In some embodiments, a gap exists between the first dam portion 2 and the second dam portion 3. The dimension of the gap in the first direction X is less than or equal to the dimension of the second dam portion 3 in the first direction X. The beneficial effects of this embodiment are the same as those of the previous embodiments, and will not be repeated here.

[0072] In some embodiments, the average dimension of the first dam section 2 along the direction of the opening 201 is less than or equal to the average dimension of the second dam section 3 along the direction of the opening 201.

[0073] In this embodiment, the first dam section 2 is closer to the display area 101 than the second dam section 3, and it provides initial blocking for the material forming the organic layer 42. The second dam section 3 is farther away from the display area 101 than the first dam section 2 and acts as the final barrier. The width of the dam section can increase layer by layer from the display area 101 to the non-display area 102 to reasonably disperse the impact force.

[0074] In some embodiments, the display panel 10 further includes a second substrate. The second substrate is disposed on the side of the thin-film encapsulation structure 4 away from the first substrate 1, and is used to cooperate with the first substrate 1 to achieve encapsulation.

[0075] It should be noted that the material of the second substrate can be CPI (colorless polyimide), PET (polyethylene terephthalate), or UTG (ultra-thin glass).

[0076] Based on the same inventive concept, this application provides a method for manufacturing a display panel 10, including:

[0077] S1: Provides a first substrate 1;

[0078] S2: A first dam 2 with an opening 201 is formed in the non-display area 102 of the first substrate 1. The first dam 2 surrounds the display area 101. The opening 201 of the first dam 2 is parallel to the first direction X, where the first direction X is the direction of the display area 101 close to the non-display area 102.

[0079] S3: A second dam section 3 is formed in the non-display area 102 of the first base 1, and the second dam section 3 forms a closed loop structure around the first dam section 2;

[0080] S4: A first inorganic layer 41, an organic layer 42, and a second inorganic layer 43 are sequentially stacked on the side of the first substrate 1 near the first dam 2 and the second dam 3 to form the thin film encapsulation structure 4; wherein the organic layer 42 is located within the closed-loop structure formed by the second dam 3;

[0081] S5: A touch line 5 is formed on the side of the first dam section 2 and the second dam section 3 away from the first base 1, which bridges the display area 101 and the non-display area 102.

[0082] In some embodiments, the first inorganic layer 41 and the second inorganic layer 43 are formed by CVD (Chemical Vapor Deposition) deposition.

[0083] In some embodiments, the organic layer 42 is formed by processes such as inkjet printing (IJP), spraying, or spin coating.

[0084] Based on the same inventive concept, this application provides a display device. The display device includes the aforementioned display panel 10. Therefore, the display device possesses all the features and advantages of the aforementioned display panel 10, which will not be repeated here.

[0085] It should be noted that the display device can be any device that displays images, whether moving (e.g., video) or fixed (e.g., still images), and whether it contains text or images. More specifically, the intended embodiments can be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0086] The above embodiments of this application can complement each other without causing conflict.

[0087] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0088] The terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0089] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0090] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0091] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A display panel, comprising a display area and a non-display area surrounding the display area, characterized in that, The display panel includes: First base; A first dam section is located on the first base, disposed in the non-display area and surrounding the display area. The first dam section has a through opening, the opening direction of which is parallel to a first direction, the first direction being the direction from the display area to the non-display area. The second dam section is located on the side of the first base near the first dam section, is disposed in the non-display area and surrounds the first dam section, and the side of the second dam section near the first dam section encloses and forms a closed loop structure. A thin-film encapsulation structure, located on the side of the first substrate near the first dam and the second dam, includes a first inorganic layer, an organic layer, and a second inorganic layer stacked sequentially; wherein the organic layer is disposed within the closed-loop structure formed by the second dam; The touch line is located on the side of the first dam and the second dam away from the first base and spans between the display area and the non-display area. The orthographic projection of the touch line on the first base at least partially overlaps with the orthographic projection of the opening on the first base.

2. The display panel of claim 1, wherein, The openings are at least partially arrayed in the area of ​​the first dam near the touch line.

3. The display panel of claim 1, wherein, The dimension of the first dam section in the second direction is less than or equal to the dimension of the second dam section in the second direction, and the second direction is perpendicular to the plane of the first base on the side near the first dam section.

4. The display panel of claim 3, wherein, The orthographic projection of the opening on the plane of the second dam section near the first dam section is a polygon, a circle, or an ellipse.

5. The display panel of claim 1, wherein, The opening extends through the surface of the first dam section away from the first base; And / or, the opening extends through the surface of the first dam near the first base.

6. The display panel of claim 1, wherein, The size of the opening in the second direction is equal to the size of the first dam in the second direction, and the second direction is perpendicular to the plane of the first base on the side near the first dam.

7. The display panel of claim 1, wherein, The dimension of the cross section of the first dam section along the first direction on the side away from the first base is less than or equal to the dimension of the cross section of the first dam section along the first direction on the side closer to the first base; And / or, the dimension of the cross section of the second dam section along the first direction on the side away from the first base is less than or equal to the dimension of the cross section of the second dam section along the first direction on the side close to the first base.

8. The display panel of claim 1, wherein, There is a gap between the first dam section and the second dam section; The dimension of the gap in the first direction is less than or equal to the dimension of the first dam in the first direction; And / or, the size of the gap in the first direction is less than or equal to the size of the second dam in the first direction.

9. The display panel of claim 1, wherein, The average dimension of the first dam section along the opening direction is less than or equal to the average dimension of the second dam section along the opening direction.

10. The display panel of claim 1, wherein, The display panel further includes: a second substrate; The second substrate is disposed on the side of the thin-film encapsulation structure away from the first substrate, and is used to cooperate with the first substrate to achieve encapsulation.

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

Images