Display panel and display device

Abstract

A display panel is provided with a display area and a peripheral area, and the peripheral area at least surrounds the display area. The display panel comprises a first conductive layer, a barrier dam and a touch layer. The blocking dam is located in the peripheral area. Along the thickness direction of the display panel, the blocking dam is located between the first conductive layer and the touch layer. The first conductive layer includes a first signal line. The first signal line extends from the display area to the peripheral area. The first signal line comprises a comb tooth part located in the peripheral area. The comb tooth part is at least located on the side, away from the display area, of the blocking dam. The touch layer comprises a protection pattern, and the protection pattern is located in the peripheral area and at least located on the side, away from the display area, of the blocking dam. The orthographic projection of the protection pattern on the first conductive layer is at least partially overlapped with the comb tooth part. The utility model further discloses a display device comprising the display panel.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) display technology is a technology that uses light-emitting materials to emit light when driven by an electric current to achieve display. OLED display devices have advantages such as being ultra-lightweight, ultra-thin, high-brightness, wide viewing angle, low voltage, low power consumption, fast response, high definition, shock resistance, flexibility, low cost, simple manufacturing process, use of fewer raw materials, high luminous efficiency, and wide temperature range. Utility Model Content

[0003] On one hand, a display panel is provided, having a display area and a peripheral area, the peripheral area at least surrounding the display area. The display panel includes: a first conductive layer, a barrier dam, and a touch layer. The barrier dam is located in the peripheral area. Along the thickness direction of the display panel, the barrier dam is located between the first conductive layer and the touch layer. The first conductive layer includes a first signal line. The first signal line extends from the display area to the peripheral area. The first signal line includes comb-like portions located in the peripheral area. The comb-like portions are at least located on the side of the barrier dam away from the display area. The touch layer includes a protective pattern located in the peripheral area and at least on the side of the barrier dam away from the display area. The orthographic projection of the protective pattern onto the first conductive layer at least partially overlaps with the comb-like portions.

[0004] In some embodiments, the number of comb teeth is multiple, and the multiple comb teeth include a first comb tooth. The first signal line includes a first power signal line, and the first comb tooth is disposed on the first power signal line. The number of protective patterns is multiple, and the multiple protective patterns include a first protective pattern. The first comb tooth is located within the orthographic projection range of the first protective pattern on the first conductive layer. The orthographic projection of the first protective pattern on the first conductive layer and the first comb tooth are both located on the side of the blocking dam on the first conductive layer away from the display area.

[0005] In some embodiments, the peripheral area includes a fan-out area. The first comb tooth portion is located at one end of the fan-out area along its extending direction. The first comb tooth portion includes a first comb handle and a plurality of first comb teeth connected to the first comb handle. The plurality of first comb teeth are spaced apart along a first direction, which intersects the direction from the fan-out area to the display area. The first protective pattern is block-shaped and extends along the first direction.

[0006] In some embodiments, the peripheral area includes a fan-out area. The plurality of comb teeth further includes a second comb tooth located in the fan-out area, and the first power signal line is also provided with the second comb tooth. Compared to the second comb tooth, the first comb tooth is closer to the apex of the display area. The plurality of protective patterns further includes a second protective pattern, the second comb tooth overlapping with the orthographic projection of the second protective pattern on the first conductive layer. The orthographic projection of the second protective pattern on the first conductive layer overlaps with the orthographic projection of the barrier dam on the first conductive layer, with a portion located on the side of the barrier dam's orthographic projection on the first conductive layer away from the display area, and a portion located on the side of the barrier dam's orthographic projection on the first conductive layer closer to the display area. The second comb tooth overlaps with the orthographic projection of the barrier dam on the first conductive layer, and is located on both the side of the barrier dam's orthographic projection on the first conductive layer away from the display area and the side closer to the display area.

[0007] In some embodiments, the second comb portion includes a second comb handle and a plurality of second comb teeth connected to the second comb handle. The plurality of second comb teeth are spaced apart along a second direction. The second protective pattern is block-shaped and extends along the second direction, which is the direction from the fan-out area to the display area.

[0008] In some embodiments, the plurality of comb teeth further includes a third comb tooth portion, and the first signal line includes a second power signal line. The third comb tooth portion is disposed on the second power signal line. The plurality of protective patterns further includes a third protective pattern. The third comb tooth portion overlaps with the orthographic projection portion of the third protective pattern on the first conductive layer. The orthographic projection of the third protective pattern on the first conductive layer is located on the side of the orthographic projection of the barrier dam on the first conductive layer away from the display area and on the side of the barrier dam closer to the display area, and overlaps with the orthographic projection portion of the barrier dam on the first conductive layer. The third comb tooth portion overlaps with the orthographic projection portion of the barrier dam on the first conductive layer, and is located on the side of the orthographic projection of the barrier dam on the first conductive layer away from the display area and on the side of the barrier dam closer to the display area.

[0009] In some embodiments, the third comb portion includes: a third comb handle and a plurality of third comb teeth connected to the third comb handle. The plurality of third comb teeth are spaced apart along a second direction. The third protective pattern is block-shaped and extends along the second direction, which is the direction from the fan-out area to the display area.

[0010] In some embodiments, along a second direction, the second comb teeth and the third comb teeth are at least partially opposite each other. The second direction is the direction from the fan-out area to the display area. The second protective pattern and the third protective pattern are interconnected and form an integral structure.

[0011] In some embodiments, the touch layer further includes a plurality of second signal lines located in the peripheral area. The second signal lines surround at least a portion of the display area. One of the second signal lines is connected to at least one of the protective patterns. The second signal lines are used to transmit a constant voltage signal.

[0012] In some embodiments, the touch layer includes a first touch sublayer and a second touch sublayer. The first touch sublayer is located between the second touch sublayer and the first conductive layer. A protective pattern is located on one of the first touch sublayers or the second touch sublayer.

[0013] In some embodiments, the second signal line is located in the first touch sub-layer. The protective pattern located in the first touch sub-layer is connected to the second signal line and is integrally formed.

[0014] In some embodiments, the touch layer includes a first touch sub-layer and a second touch sub-layer. The first touch sub-layer is located between the second touch sub-layer and the first conductive layer. A protective pattern includes two stacked and electrically connected sub-protective patterns, the orthographic projections of the two sub-protective patterns on the first conductive layer overlapping or substantially overlapping. The two sub-protective patterns are located in the first touch sub-layer and the second touch sub-layer, respectively.

[0015] In some embodiments, the second signal line is located in the first touch sub-layer. The sub-protective pattern located in the first touch sub-layer of the protective pattern is connected to the second signal line and forms an integral structure.

[0016] In some embodiments, the plurality of second signal lines include anti-static signal lines and crack detection signal lines. A second signal line connected to one of the protective patterns is either the anti-static signal line or the crack detection signal line.

[0017] In some embodiments, the orthographic projection of the crack detection signal line onto the first conductive layer is located on the side of the barrier dam whose orthographic projection onto the first conductive layer is away from the display area. The crack detection signal line is connected to the first protective pattern.

[0018] In some embodiments, the orthographic projection of the anti-static signal line onto the first conductive layer is located on the side of the orthographic projection of the barrier dam onto the first conductive layer closer to the display area. The anti-static signal line is connected to a second protective pattern or a third protective pattern.

[0019] In some embodiments, the display panel further includes an encapsulation layer. Along the thickness direction of the display panel, the encapsulation layer is located between the barrier dam and the touch layer. The orthographic projection of the barrier dam onto the first conductive layer lies within the orthographic projection range of the encapsulation layer onto the first conductive layer.

[0020] In some embodiments, the display panel further includes a planarization layer. The planarization layer is located between the first conductive layer and the touch layer. At least a portion of the blocking dam is disposed on the same layer as the planarization layer. The planarization layer includes a first pattern located in the peripheral area. The blocking dam is located on the side of the first pattern closer to the display area. Along the thickness direction of the display panel, a portion of the first pattern closer to the display area overlaps with a portion of the protective pattern farther from the display area. The orthographic projection of the comb teeth on the first conductive layer is located within the orthographic projection range of the area occupied by the first pattern and the protective pattern on the first conductive layer.

[0021] On the other hand, a display device is provided. The display device includes: a display panel as described in any of the above embodiments, and a circuit board electrically connected to the display panel. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. Furthermore, the drawings described below can be considered as schematic diagrams and are not intended to limit the actual dimensions, etc., of the products involved in the embodiments of this disclosure.

[0023] Figure 1 This is a structural diagram of a display device according to some embodiments of the present disclosure;

[0024] Figure 2 This is a structural diagram of a display panel according to some embodiments of the present disclosure;

[0025] Figure 3 This is a partial structural diagram of a display panel according to one possible implementation.

[0026] Figure 4 This is another partial structural diagram of the display panel according to one possible implementation;

[0027] Figure 5 According to Figure 2 A magnified view of a portion of the DV1 area in the display panel;

[0028] Figure 6 According to Figure 2 A magnified view of the DV2 area in the display panel;

[0029] Figure 7 This is a structural diagram of another display panel according to some embodiments of the present disclosure. Detailed Implementation

[0030] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0031] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0032] Hereinafter, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0033] In describing some embodiments, the terms "coupled" and "connected," and their derivative expressions, may be used. The term "connected" should be interpreted broadly; for example, a "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection via an intermediate medium. The term "coupled," for example, indicates that two or more components have direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0034] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0035] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0036] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0037] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0038] like Figure 1As shown, some embodiments of this disclosure provide a display device 1000, which can be any display device that displays images, whether moving (e.g., video) or fixed (e.g., still images), and whether text or images. More specifically, the display device of the embodiments is contemplated to 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 an item), etc.

[0039] The display device 1000 includes a display panel 100 and a cover plate.

[0040] In some examples, the display panel 100 may be an organic light-emitting diode (OLED) display panel.

[0041] For example, the display panel can be AMOLED (Active Matrix Driving OLED). AMOLED display panels have advantages such as low manufacturing cost, high response speed, power saving, DC drive capability for portable devices, and wide operating temperature range.

[0042] The cover plate is located on the light-emitting side of the display panel 100. The cover plate protects the display panel 100 from damage such as external impacts. The cover plate can be made of glass.

[0043] The display device 1000 may further include a circuit board. The circuit board is located on the non-light-emitting side of the display panel 100. The circuit board is connected to the display panel 100 and is used to transmit display drive signals, etc., to the display panel 100. The circuit board may be a printed circuit board (PCB).

[0044] In some examples, such as Figure 2 As shown, the display panel 100 has a display area AA and a peripheral area BB. The peripheral area BB surrounds at least the display area AA.

[0045] For example, display area AA is the area of ​​display panel 100 used to display images.

[0046] For example, the aforementioned display area AA refers to the area of ​​the display panel 100 used to display images.

[0047] For example, the shape of the display area AA can include various types, and can be selected and set according to actual needs. The embodiments of this disclosure do not limit this.

[0048] For example, the shape of the display area AA can be rectangular, approximately rectangular, circular, or elliptical. An approximately rectangular shape is not strictly a rectangle; its four interior corners may be rounded, or one of its sides may not be a straight line. For ease of description, the embodiments of this disclosure will be illustrated using an approximately rectangular shape for the display area AA.

[0049] In some examples, the display panel 100 includes a driving backplane, a light-emitting device layer, an encapsulation layer, and a touch layer, which are stacked sequentially.

[0050] The driving backplane is used to provide driving signals to the light-emitting devices in the light-emitting device layer.

[0051] In some examples, the driving backplane includes: a substrate and a semiconductor layer (active layer), a first gate insulating layer, a first gate conductive layer, a second gate insulating layer, a second gate conductive layer, an interlayer dielectric layer, a first source / drain conductive layer, a first planarization layer, a second source / drain conductive layer, and a second planarization layer, which are sequentially stacked on the substrate.

[0052] For example, the substrate described above can be either a flexible substrate or a rigid substrate. When the substrate is flexible, the substrate material can be a highly elastic material such as dimethylsiloxane, PI (polyimide), or PET (polyethylene terephthalate). When the substrate is rigid, the substrate material can be glass or the like.

[0053] For example, the materials of the semiconductor layer can include amorphous silicon, monocrystalline silicon, polycrystalline silicon, etc., or metal oxide semiconductor materials, such as indium gallium zinc oxide (IGZO).

[0054] For example, the materials of the first gate conductive layer, the second gate conductive layer, the first source / drain conductive layer, and the second source / drain conductive layer can all be conductive materials. These conductive materials can be metallic materials, such as Al (aluminum), Ag (silver), Cu (copper), and Cr (chromium). The second source / drain conductive layer can be a stacked structure comprising three layers of titanium, aluminum, and titanium.

[0055] For example, the first gate insulating layer is used to isolate the semiconductor layer from the first gate conductive layer to prevent short circuits, and the second gate insulating layer is used to isolate the first gate conductive layer from the second gate conductive layer to prevent short circuits. The interlayer dielectric layer is used to isolate the second gate conductive layer from the first source / drain conductive layer to prevent short circuits. For example, the materials of the first gate insulating layer, the second gate insulating layer, and the interlayer dielectric layer can be silicon oxide, silicon nitride, silicon oxynitride, etc.

[0056] It should be noted that the orthographic projection of the semiconductor layer onto the substrate overlaps with the orthographic projection of the first gate conductive layer onto the substrate. Specifically, after forming the first gate conductive layer on the side of the semiconductor layer away from the substrate, the semiconductor layer can be doped using the first gate conductive layer as a mask. This causes the portion of the semiconductor layer not covered by the gate conductive layer to form a conductor, which can constitute the first or second electrode of a partial transistor. The portion of the semiconductor layer covered by the first gate conductive layer forms the channel portion of the partial transistor. The portion of the first gate conductive layer overlapping with the semiconductor layer forms the gate pattern of the partial transistor, and this gate pattern constitutes the gate of the transistor. Furthermore, the orthographic projection of the first gate conductive layer onto the substrate overlaps with the orthographic projection of the second gate conductive layer onto the substrate; this overlapping portion constitutes a capacitor.

[0057] A pixel driving circuit consists of at least one transistor and at least one capacitor. The pixel driving circuit can generate a driving signal (e.g., driving current).

[0058] For example, the light-emitting device layer includes: a first electrode layer, a light-emitting layer, and a second electrode layer sequentially stacked on the second planarization layer.

[0059] For example, the first electrode can be one of the anode and the cathode, and the second electrode can be the other of the anode and the cathode; the embodiments of this disclosure are not limited in this respect.

[0060] For example, the first electrode layer includes a plurality of first electrodes spaced apart. The second electrode layer includes a plurality of second electrodes, which are interconnected and form a single integral structure. The materials of the anode layer and the cathode layer include conductive materials.

[0061] For example, the display panel further includes a defining layer. The defining layer is located between the first electrode layer and the light-emitting layer. The defining layer includes a plurality of openings, each opening corresponding to a first electrode, and the light-emitting layer contacts at least a portion of the surface of the first electrode near the light-emitting layer through the opening.

[0062] The first electrode, the light-emitting layer, and the second electrode constitute a light-emitting device.

[0063] For example, a pixel driving circuit is connected to at least one light-emitting device. The pixel driving circuit and the connected light-emitting devices constitute a sub-pixel P. Each light-emitting device can emit light under the driving signal generated by its respective pixel driving circuit. The light emitted by multiple light-emitting devices cooperates with each other, thereby enabling the display substrate and display device to achieve the display function.

[0064] Multiple pixel driving circuits and multiple light-emitting devices are located in the display area AA.

[0065] For example, during the formation of the second flattening layer and the pixel demarcation layer, a barrier dam can be formed simultaneously. The barrier dam is located in the surrounding area.

[0066] The aforementioned encapsulation layer can be a thin film encapsulation (TFE) layer. For example, a thin film encapsulation layer includes a first sublayer, a second sublayer, and a third sublayer stacked together.

[0067] For example, the materials of the first and third sublayers can both be inorganic materials, and the materials of the two can be the same, while the material of the second sublayer can be an organic material.

[0068] The second sublayer primarily serves for leveling and stress relief. The first and third sublayers mainly act as water / oxygen barriers, enclosing the second sublayer located between the first and third sublayers. Because the barrier dam has a certain height, it can be used to impede the material of the second sublayer, ensuring that the second sublayer forms within the area enclosed by the barrier dam. Outside this area, there is no second sublayer. The first and third sublayers cover the barrier dam and extend into the surrounding area.

[0069] The aforementioned thin film encapsulation layer is relatively thin, which is beneficial for achieving a thinner and lighter display panel design. Furthermore, it has a good encapsulation effect on the light-emitting device layer and the driving backplane, which helps to improve the display panel's resistance to water vapor corrosion and extend its display life.

[0070] For example, a buffer layer can be disposed on the encapsulation layer, and the material of the buffer layer can be an inorganic material. A touch layer can be disposed on the buffer layer. For instance, the touch layer in the embodiments of this disclosure can be an FMLOC (Flexible Multilayer On Cell) structure. This reduces the thickness of the display panel and display device, facilitating a thinner and lighter design for the display device.

[0071] There are various structures for the touch layer, which can be configured according to actual needs. The embodiments disclosed herein do not impose any limitations on this.

[0072] For example, the touch layer may include a single-layer conductive structure.

[0073] For example, the touch layer includes a multi-layer conductive structure. The touch layer includes a first touch sub-layer, a dielectric layer, and a second touch sub-layer stacked together. The first and second touch sub-layers are made of conductive materials. The dielectric layer can be made of an inorganic material. The first touch sub-layer includes multiple first touch electrodes, and the second touch sub-layer includes multiple second touch electrodes. The first touch electrodes can be touch transmitting electrodes (Tx), and the second touch electrodes can be touch receiving electrodes (Rx). The touch transmitting electrodes are used to transmit touch signals, and the touch receiving electrodes are used to receive touch signals. The touch signals provided by the touch chip are transmitted to the first touch electrodes via signal lines, such as transmit touch signal lines. The sensing signals received by the second touch electrodes are transmitted to the touch chip via signal lines, such as receive touch signal lines, thereby realizing the touch function of the display panel.

[0074] In one possible implementation, such as Figures 3-4 As shown, the second source / drain conductive layer 10' in the aforementioned display panel includes signal lines 11', and the first electrode layer includes multiple spaced first electrode patterns. A touch layer 30' is also provided in the display panel. After the second source / drain conductive layer 10' is formed, a second planarization layer 50' is absent in a portion of the area on the side of the barrier dam 20' away from the display area. Therefore, no second planarization layer 50' covers the signal lines 11' in this area. The fabrication of the first electrode layer generally involves forming a first electrode film and then etching the first electrode film to form multiple first electrodes. However, during the etching process, the first electrode film is easily over-etched. The step difference between the plane where the over-etched area is located and the plane where the first electrode is located is large, resulting in poor coverage of the signal lines in the subsequent encapsulation layer corresponding to that location. This leads to encapsulation failure, allowing external moisture to easily enter the display area from the encapsulation layer, thereby reducing the lifespan of the display panel.

[0075] Therefore, as Figures 3-4As shown, the inventors have provided a comb portion 12' on the aforementioned signal line 11'. The comb portion 12' extends the path of external moisture through the encapsulation layer and the comb portion into the display area, thus extending the time for external moisture to enter the display area and thereby extending the lifespan of the display panel. However, during the etching process of the first electrode film, over-etching can easily etch the second source-drain conductive layer 10', resulting in a poor morphology of the second source-drain conductive layer (e.g., the morphology of the signal line or the comb portion in the signal line). For example, etching away the aluminum layer in the second source-drain conductive layer can cause the titanium layers on both sides of the aluminum layer to lift up, making it easy for wrinkles to form in the part of the encapsulation layer corresponding to the over-etched part. This allows moisture to easily invade from the wrinkled part and enter the display area of ​​the display panel, making the display panel susceptible to corrosion and oxidation in high temperature and high humidity environments. This results in continuously growing dark spots (GDS) appearing on the screen displayed on the display panel, leading to a shorter lifespan for the display panel.

[0076] Based on this, embodiments of this disclosure provide a display panel, with reference to... Figure 2 , Figures 5-7 The display panel 100 includes a first conductive layer 10, a barrier dam 20, and a touch layer 30. Along the thickness direction of the display panel 100, the barrier dam 20 is located between the first conductive layer 10 and the touch layer 30.

[0077] For example, the first conductive layer 10 can be the second source / drain conductive layer in the drive backplane in the above embodiments.

[0078] For example, the number of barrier dams 20 can be one or more. For instance, there can be multiple barrier dams 20 arranged at intervals.

[0079] For example, such as Figure 2 As shown, the top view of the barrier dam 20 is circular in shape.

[0080] The first conductive layer 10 includes a first signal line 11. The first signal line 11 extends from the display area AA to the peripheral area BB. The first signal line 11 includes a comb portion 12 located in the peripheral area BB. The comb portion 12 is located at least on the side of the barrier dam 20 away from the display area AA.

[0081] For example, the number of comb teeth 12 is multiple, such as Figure 5 As shown, a comb tooth section 12 can be located on the side of the barrier dam 20 away from the display area AA. Figure 6 As shown, another comb tooth 12 can be located on the side of the blocking dam 20 away from the display area AA, and also on the side of the blocking dam 20 closer to the display area AA.

[0082] The touch layer 30 includes a protective pattern 31 located in the peripheral area BB and at least on the side of the barrier dam 20 away from the display area AA. The orthographic projection of the protective pattern 31 onto the first conductive layer 10 at least partially overlaps with the comb teeth 12.

[0083] For example, the orthographic projection of the protective pattern 31 onto the first conductive layer 10 overlaps with the comb tooth portion 12.

[0084] For example, the comb teeth 12 are located within the orthographic projection range of the protective pattern 31 on the first conductive layer 10.

[0085] The display panel 100 provided in the above embodiments of this disclosure includes a first conductive layer 10, a barrier dam 20, and a touch layer 30. The first conductive layer 10 includes a first signal line 11, and the first signal line 11 includes a comb portion 12 located in the peripheral area BB of the display panel. The comb portion 12 is located at least on the side of the barrier dam away from the display area AA. Thus, the comb portion 12 can be used to extend the intrusion path of water vapor, oxygen, or impurity particles, extend the service life of the display panel, and facilitate the realization of a narrow bezel design for the display panel. The touch layer 30 also includes a protective pattern 31 located in the peripheral area BB. The protective pattern 31 is located at least on the side of the barrier dam 20 away from the display area AA, and the orthographic projection of the protective pattern 31 on the first conductive layer 10 at least partially overlaps with the comb teeth 12. Thus, the protective pattern 31 can protect the comb teeth 12 located in the first conductive layer 10, preventing external moisture, oxygen, impurities, and particles from entering the display area AA, or making it difficult for external moisture, oxygen, impurities, and particles to enter the display area AA from the first conductive layer 10. This improves the display panel's tolerance to high humidity environments, reduces the GDS phenomenon of the display panel, and isolates it from high or low temperature environments, delaying the oxidation of the light-emitting devices in the display panel under high temperature conditions, thereby increasing the lifespan of the display panel. Furthermore, since the protective pattern 31 is located in the touch layer 30, it can be formed simultaneously during the fabrication of the touch electrodes in the touch layer 30, eliminating the need for a separate fabrication process and procedure for the protective pattern, thus not increasing the fabrication process and procedure of the display panel 100.

[0086] In some examples, such as Figure 7 As shown, the display panel 100 also includes an encapsulation layer 40 and a substrate 001.

[0087] Along the thickness direction of the display panel 100, the encapsulation layer 40 is located between the barrier dam 20 and the touch layer 30. For example, a portion of the encapsulation layer 40 covers the barrier dam 20. The encapsulation layer 40 is located on the side of the touch layer 30 closest to the substrate 001.

[0088] The orthographic projection of the barrier dam 20 onto the first conductive layer 10 is located within the orthographic projection range of the encapsulation layer 40 onto the first conductive layer 10.

[0089] Therefore, the touch layer 30 can protect the encapsulation layer 40. The touch layer 30 can protect the wrinkles in the encapsulation layer 40 caused by over-etching, and prevent the wrinkles in the encapsulation layer from becoming weak areas for moisture and oxygen intrusion. This can improve the encapsulation effect of the display panel and thus improve the service life of the display panel.

[0090] In some examples, such as Figure 5 and Figure 6 As shown, there are multiple comb teeth 12, including a first comb tooth 121. There are also multiple protective patterns 31, including a first protective pattern 311.

[0091] like Figure 5 As shown, the first signal line 11 includes a first power signal line 111, and a first comb tooth portion 121 is provided on the first power signal line 111. The orthographic projection of the first protective pattern 311 on the first conductive layer 10 and the first comb tooth portion 121 are both located on the side of the blocking dam 20 on the first conductive layer 10 away from the display area AA.

[0092] The first comb tooth 121 is located within the orthogonal projection range of the first protective pattern 311 on the first conductive layer 10.

[0093] Therefore, the first protective pattern 311 can be used to protect the first comb tooth portion 121, reducing the probability of water vapor, oxygen, impurities, and particles intruding into the display area, improving the display panel's resistance to water and oxygen corrosion, and preventing over-etching of the first power signal line and the first comb tooth portion located on the first conductive layer during the formation of the first electrode, which could lead to wrinkles in the encapsulation layer, making it easier for water vapor to intrude into the display area through these wrinkles. Furthermore, the first protective pattern 311 can provide a certain degree of isolation from external high or low temperature environments, delaying the oxidation of the light-emitting devices in the display panel under high temperature conditions, ensuring the normal operation of the display panel under low temperature conditions, and thus improving the lifespan of the display panel.

[0094] In some examples, such as Figure 2 As shown, the peripheral area BB includes a fan-out area B1. The first comb tooth 121 is located at one end of the fan-out area B1 along its extending direction. For example, the first comb tooth 121 is located at a corner of the peripheral area BB.

[0095] like Figure 5As shown, the first comb portion 121 includes a first comb handle 1211 and a plurality of first comb teeth 1212 connected to the first comb handle 1211. The plurality of first comb teeth 1212 are arranged at intervals along a first direction X, and the first direction X intersects the direction from the fan-out area B1 to the display area AA.

[0096] The first protective pattern 311 is block-shaped and extends along the first direction X.

[0097] Figure 5 In the diagram, Z represents the direction in which the thickness of the display panel is located.

[0098] Therefore, the area occupied by the first protective pattern 311 can be larger, and the first protective pattern 311 has a better protective effect on the first conductive layer and the corresponding encapsulation layer, reducing the probability of water vapor, oxygen impurities and particles invading into the display area AA, and improving the display panel's resistance to water and oxygen corrosion and oxidation.

[0099] In some examples, such as Figure 2 and Figure 6 As shown, the multiple comb teeth 12 also include a second comb tooth 122 located in the fan-out area B1, and the second comb tooth 122 is also provided on the first power signal line 111. Compared with the second comb tooth 122, the first comb tooth 121 is closer to the top corner of the display area AA.

[0100] The plurality of protective patterns 31 also includes a second protective pattern 312, wherein the second comb tooth portion 122 overlaps with the orthographic projection portion of the second protective pattern 312 on the first conductive layer 10.

[0101] The second protective pattern 312, as a projection onto the first conductive layer 10, overlaps with the projection of the barrier dam 20 onto the first conductive layer 10. A portion of the barrier dam 20 is located on the side of its projection away from the display area AA, and a portion is located on the side of its projection closer to the display area AA. The second comb tooth 122 overlaps with the projection of the barrier dam 20 onto the first conductive layer 10, and is located on both the side of the barrier dam 20's projection away from and the side closer to the display area AA.

[0102] Therefore, the second protective pattern 312 can be used to cover and protect the second comb tooth portion 122, reducing the probability of external water, oxygen, impurities, and particles intruding into the display area from the second comb tooth portion 122, extending the time for these particles to intrude into the display area, and improving the display panel's resistance to water and oxygen. Furthermore, the second protective pattern 312 covers the first conductive layer 10 and the encapsulation layer on the first conductive layer 10, further reducing the probability of external water and oxygen entering the display area through the wrinkles in the encapsulation layer.

[0103] In some examples, such as Figure 6 As shown, the second comb portion 122 includes a second comb handle 1221 and a plurality of second comb teeth 1222 connected to the second comb handle 1221. The plurality of second comb teeth 1222 are arranged at intervals along the second direction Y.

[0104] The second protective pattern 312 is block-shaped and extends along the second direction Y, which is the direction from the fan-out area B1 to the display area AA.

[0105] Therefore, the second protective pattern 312 occupies a larger area, providing better protection for the first conductive layer and the corresponding encapsulation layer. This reduces the probability of moisture intrusion into the display area and improves the display panel's resistance to water and oxygen corrosion. Furthermore, this block-shaped second protective pattern 312 can provide a certain degree of isolation from external high or low temperature environments, delaying the oxidation of the light-emitting devices in the display panel under high temperatures and ensuring normal operation of the display panel under low temperatures, thereby extending the lifespan of the display panel.

[0106] In some examples, such as Figure 6 As shown, the plurality of comb teeth 12 also includes a third comb tooth 123, and the first signal line 11 includes a second power signal line 112. The third comb tooth 123 is disposed on the second power signal line 112.

[0107] The plurality of protective patterns 31 also includes a third protective pattern 313. The third comb tooth portion 123 overlaps with the orthographic projection portion of the third protective pattern 313 on the first conductive layer 10.

[0108] The third protective pattern 313 is the orthographic projection on the first conductive layer 10, located on the side of the orthographic projection of the barrier dam 20 on the first conductive layer 10 that is far from the display area AA and close to the display area AA, and overlaps with the orthographic projection portion of the barrier dam 20 on the first conductive layer 10. The third comb tooth portion 123 overlaps with the orthographic projection portion of the barrier dam 20 on the first conductive layer 10, and is located on the side of the orthographic projection of the barrier dam 20 on the first conductive layer 10 that is far from the display area AA and close to the display area AA.

[0109] Therefore, the third protective pattern 313 can be used to cover and protect the third comb tooth portion 123, reducing the probability of external water, oxygen, or impurity particles intruding into the display area from the third comb tooth portion 123, extending the time for external water, oxygen, or impurity particles to intrude into the display area from the third comb tooth portion 123, and improving the water and oxygen resistance of the display panel. Furthermore, by using the third protective pattern 313 to cover the first conductive layer 10 and the encapsulation layer on the first conductive layer 10, the probability of external water and oxygen entering the display area through the wrinkles in the encapsulation layer is further reduced.

[0110] In some examples, such as Figure 6As shown, the third comb portion 123 includes a third comb handle 1231 and a plurality of third comb teeth 1232 connected to the third comb handle 1231. The plurality of third comb teeth 1232 are arranged at intervals along the second direction Y.

[0111] The third protective pattern 313 is block-shaped and extends along the second direction Y, which is the direction from the fan-out area B1 to the display area AA.

[0112] Therefore, the third protective pattern 313 occupies a larger area, providing better protection for the first conductive layer and the corresponding encapsulation layer. This reduces the probability of moisture intrusion into the display area and improves the display panel's resistance to water and oxygen corrosion. Furthermore, this block-shaped third protective pattern 313 can provide a certain degree of isolation from external high or low temperature environments, delaying the oxidation of the light-emitting devices in the display panel under high temperatures and ensuring normal operation of the display panel under low temperatures, thereby extending the lifespan of the display panel.

[0113] In some examples, such as Figure 6 As shown, along the second direction Y, the second comb tooth portion 122 and the third comb tooth portion 123 are at least partially aligned. The second direction Y is the direction from the fan-out area B1 to the display area AA.

[0114] The second protective pattern 312 and the third protective pattern 313 are connected to each other and form an integral structure.

[0115] For example, the second protective pattern 312 and the third protective pattern 313 are made of the same material. Therefore, the second protective pattern 312 and the third protective pattern 313 can be formed simultaneously in a single patterning process, which helps to simplify the manufacturing process of the display panel.

[0116] Understandably, reference Figure 2 The first power signal line 111 is provided with at least four comb teeth, wherein the first comb teeth 121, the second comb teeth 122, and the remaining two comb teeth are symmetrically or substantially symmetrically distributed about the central axis CL extending along the first direction X of the display area. The second power signal line 112 is provided with at least two comb teeth, wherein the third comb teeth and the other comb teeth are symmetrically or substantially symmetrically distributed about the central axis CL extending along the first direction X of the display area.

[0117] In some examples, such as Figure 6 As shown, the touch layer 30 also includes a plurality of second signal lines 32 located in the peripheral area BB. The second signal lines 32 surround at least a portion of the display area AA.

[0118] A second signal line 32 is connected to at least one protective pattern 31. The second signal line 32 is used to transmit a constant voltage signal. For example, a second signal line 32 is connected to one protective pattern 31, or a second signal line 32 is connected to two protective patterns 31.

[0119] This allows the protection pattern to be loaded with voltage, preventing the protection pattern from being in a floating state and preventing the protection pattern 31 from interfering with other signal lines.

[0120] In some examples, such as Figure 6 As shown, the touch layer 30 includes a first touch sub-layer 33 and a second touch sub-layer 34. The first touch sub-layer 33 is located between the second touch sub-layer 34 and the first conductive layer 10.

[0121] For example, a protective pattern 31 is located on the first touch sublayer 33. Or, a protective pattern 31 is located on the second touch sublayer 34.

[0122] Therefore, the protective pattern 31 and the touch electrode can be formed simultaneously in a single manufacturing process, which helps to simplify the preparation process of the protective pattern and the preparation process of the display panel.

[0123] For example, such as Figure 6 As shown, the second signal line 32 is located in the first touch sub-layer 33.

[0124] The protective pattern 31 located on the first touch sub-layer 33 is connected to the second signal line 32 and is an integral structure. Therefore, the protective pattern 31 and the second signal line 32 can be formed simultaneously in one manufacturing process, which helps to simplify the manufacturing process of the protective pattern 31 and the manufacturing process of the display panel 100.

[0125] In other examples, the touch layer 30 includes a first touch sublayer 33 and a second touch sublayer 34. The first touch sublayer 33 is located between the second touch sublayer 34 and the first conductive layer 10.

[0126] A protective pattern 31 includes two stacked and electrically connected sub-protective patterns, the orthographic projections of the two sub-protective patterns on the first conductive layer 10 being coincident or substantially coincident.

[0127] The two sub-protection patterns are located in the first touch sub-layer 33 and the second touch sub-layer 34, respectively.

[0128] Therefore, two sub-protective patterns can be used to cover the corresponding comb teeth, improving the encapsulation effect of the comb teeth. Furthermore, the two sub-protective patterns have good density and excellent isolation effect against water, oxygen, and high temperatures, making the display panel more resistant to water and oxygen and allowing it to operate within a higher temperature range.

[0129] For example, the second signal line 32 is located in the first touch sub-layer 33. The sub-protective pattern in the protective pattern 31 located in the first touch sub-layer 33 is connected to the second signal line 32 and is an integral structure.

[0130] Therefore, the sub-protective pattern and the second signal line 32 can be formed simultaneously in one manufacturing process, which helps to simplify the manufacturing process of the protective pattern 31 and the manufacturing process of the display panel 100.

[0131] In some examples, the multiple second signal lines 32 include an anti-static signal line 321 and a crack detection signal line 322.

[0132] The second signal line 32 connected to a protective pattern 31 is either an anti-static signal line 321 or a crack detection signal line 322.

[0133] This allows the protective pattern 31 to be loaded with an electrical signal, preventing the protective pattern from being in a floating state and avoiding interference with other signal lines.

[0134] In some examples, such as Figure 5 As shown, the orthographic projection of the crack detection signal line 322 on the first conductive layer 10 is located on the side of the barrier dam 20 on the first conductive layer 10 that is far from the orthographic projection of the barrier dam 20 on the first conductive layer 10.

[0135] Crack detection signal line 322 is connected to the first protective pattern 311.

[0136] Therefore, the electrical signal carried by the crack detection signal line 322 can be transmitted to the first protection pattern 311, avoiding the first protection pattern 311 from being in a floating state and avoiding the first protection pattern 311 in a floating state from interfering with other signal lines.

[0137] In some examples, such as Figure 6 As shown, the orthographic projection of the anti-static signal line 321 on the first conductive layer 10 is located on the side of the orthographic projection of the barrier dam 20 on the first conductive layer 10 that is close to the display area AA.

[0138] The anti-static signal line 321 is connected to the second protective pattern 312 or the third protective pattern 313.

[0139] Therefore, the electrical signal carried by the anti-static signal line 321 can be transmitted to the second protection pattern 312 or the third protection pattern 313, so as to prevent the second protection pattern 312 or the third protection pattern 313 from being in a floating state and to prevent the second protection pattern 312 or the third protection pattern 313 from interfering with other signal lines.

[0140] The following provides a detailed explanation of several scenarios involving protective patterns, touch layers, and second signal lines.

[0141] For example, the first protective pattern 311 is located in the first touch sub-layer and covers the first comb tooth portion 121 in the first power signal line 111. The first protective pattern 311 is connected to the crack detection signal line 322 located in the first touch sub-layer. The second protective pattern 312 and the third protective pattern 313 are connected as a single structure and partially overlap with the second comb tooth portion 122 and the third comb tooth portion 123 in the first power signal line 111. The second protective pattern 312 and the third protective pattern 313 are located in the first touch sub-layer and are connected to the anti-static signal line 321 located in the first touch sub-layer.

[0142] For example, a first protective pattern 311 is located in the first touch sub-layer and covers the first comb tooth portion 121 in the first power signal line 111. This first protective pattern 311 is connected to the crack detection signal line 322 located in the first touch sub-layer. A second protective pattern 312 is located in the first touch sub-layer and covers the second comb tooth portion 122 in the first power signal line 111. This second protective pattern 312 is connected to the anti-static signal line 321 located in the first touch sub-layer. A third protective pattern 313 is located in the second touch sub-layer and partially overlaps with the third comb tooth portion 123 in the second power signal line 112. The third protective pattern 313 is connected to the anti-static signal line 321 located in the first touch sub-layer through a via located in the dielectric layer. The dielectric layer is located between the first and second touch sub-layers.

[0143] For example, the first protective pattern 311 is located in the second touch sub-layer and covers the first comb tooth portion 121 in the first power signal line 111. The first protective pattern 311 is connected to the crack detection signal line 322 located in the first touch sub-layer through a via located in the dielectric layer. The second protective pattern 312 and the third protective pattern 313 are located in the second touch sub-layer and respectively cover the second comb tooth portion 122 and the third comb tooth portion 123 in the first power signal line 111. The second protective pattern 312 and the third protective pattern 313 can be connected into a single structure, and the second protective pattern 312 and the third protective pattern 313 are connected to the anti-static signal line 321 located in the first touch sub-layer through a via located in the dielectric layer. Alternatively, the second protective pattern 312 and the third protective pattern 313 are not connected. The second protective pattern 312 is connected to the anti-static signal line 321 located in the first touch sub-layer through a via located in the dielectric layer, and the third protective pattern 313 is connected to the anti-static signal line 321 located in the first touch sub-layer through another via located in the dielectric layer.

[0144] For example, a protective pattern 31 includes two stacked and electrically connected sub-protective patterns, whose orthographic projections on the first conductive layer 10 coincide or substantially coincide. The two sub-protective patterns are located in the first touch sub-layer and the second touch sub-layer, respectively. Both sub-protective patterns cover the first comb tooth portion 121 and the second comb tooth portion 122 in the first power signal line 111, and the third comb tooth portion 123 in the second power signal line 112. The sub-protective pattern located in the first touch sub-layer is connected to the anti-static signal line 321 located in the first touch sub-layer.

[0145] In some examples, such as Figure 5 and Figure 6 As shown, the above-mentioned display panel 100 also includes a planarization layer 50.

[0146] For example, the flattening layer 50 can be the second flattening layer in the drive backplane in the above embodiments.

[0147] Planarization layer 50 is located between first conductive layer 10 and touch layer 30. At least a portion of barrier dam 20 is disposed on the same layer as planarization layer 50. Planarization layer 50 includes a first pattern 51 located in peripheral area BB. Barrier dam 20 is located on the side of first pattern 51 closer to display area AA.

[0148] Along the thickness direction of the display panel 100, a portion of the first pattern 51 near the display area AA overlaps with a portion of the protective pattern 31 away from the display area AA. The orthographic projection of the comb portion 12 on the first conductive layer 10 is located within the orthographic projection range of the area occupied by the first pattern 51 and the protective pattern 31 on the first conductive layer 10.

[0149] Therefore, the first pattern 51 and the protective pattern 31 can be used together to cover the comb teeth 12, further preventing external water, oxygen, or impurity particles from entering the display area from the comb teeth 12. Furthermore, the protective pattern 31 can also cover the wrinkles in the encapsulation layer, preventing the encapsulation layer from lifting at the wrinkles and preventing water, oxygen, or impurity particles from entering the display area from the wrinkles, further preventing corrosion of the light-emitting devices and other structures in the display area, and avoiding affecting the display panel's lifespan. The protective pattern 31 can also provide a certain degree of isolation from external high or low temperatures, improving the reliability of the display panel in high or low temperature environments.

[0150] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display panel having a display area and a perimeter area, the perimeter area at least surrounding the display area; the display panel comprising: First conductive layer, barrier dam, touch layer; The barrier dam is located in the surrounding area; Along the thickness direction of the display panel, the barrier dam is located between the first conductive layer and the touch layer; The first conductive layer includes a first signal line; the first signal line extends from the display area to the peripheral area; the first signal line includes a comb-like portion located in the peripheral area; the comb-like portion is at least located on the side of the barrier away from the display area; The touch layer includes a protective pattern located in the peripheral area and at least on the side of the barrier away from the display area; the orthographic projection of the protective pattern onto the first conductive layer at least partially overlaps with the comb teeth.

2. The display panel of claim 1, wherein, The number of comb teeth is multiple, and the multiple comb teeth include a first comb tooth; the first signal line includes a first power signal line, and the first comb tooth is disposed on the first power signal line; the number of protection patterns is multiple, and the multiple protection patterns include a first protection pattern. The first comb teeth are located within the orthographic projection range of the first protective pattern on the first conductive layer; The orthographic projection of the first protective pattern onto the first conductive layer and the first comb teeth are both located on the side of the orthographic projection of the barrier dam onto the first conductive layer that is away from the display area.

3. The display panel of claim 2, wherein, The peripheral area includes a fan-out area; the first comb tooth is located at one end of the fan-out area along its extension direction. The first comb portion includes a first comb handle and a plurality of first comb teeth connected to the first comb handle; the plurality of first comb teeth are arranged at intervals along a first direction, the first direction intersecting the direction from the fan-out area to the display area; The first protective pattern is block-shaped and extends along the first direction.

4. The display panel of claim 2 or 3, wherein, The surrounding area includes a fan-out area; The plurality of comb teeth also includes a second comb tooth located in the fan-out area, and the first power signal line is also provided with the second comb tooth; compared with the second comb tooth, the first comb tooth is closer to the top corner of the display area; The plurality of protective patterns also includes a second protective pattern, wherein the second comb teeth overlap with the orthographic projection portion of the second protective pattern on the first conductive layer; The orthographic projection of the second protective pattern onto the first conductive layer overlaps with the orthographic projection of the barrier dam onto the first conductive layer, with a portion located on the side of the barrier dam's orthographic projection on the first conductive layer away from the display area and a portion located on the side of the barrier dam's orthographic projection on the first conductive layer close to the display area; the second comb teeth overlap with the orthographic projection of the barrier dam onto the first conductive layer, and are located on both the side of the barrier dam's orthographic projection on the first conductive layer away from the display area and the side close to the display area.

5. The display panel of claim 4, wherein, The second comb portion includes a second comb handle and a plurality of second comb teeth connected to the second comb handle; the plurality of second comb teeth are arranged at intervals along a second direction; The second protective pattern is block-shaped and extends along the second direction, which is the direction from the fan-out area to the display area.

6. The display panel of claim 4 or 5, wherein, The plurality of comb teeth also includes a third comb tooth portion, and the first signal line includes a second power signal line; the third comb tooth portion is disposed on the second power signal line. The plurality of protective patterns also includes a third protective pattern; the third comb teeth overlap with the orthographic projection portion of the third protective pattern on the first conductive layer; The orthographic projection of the third protective pattern on the first conductive layer is located on the side of the orthographic projection of the barrier dam on the first conductive layer that is away from the display area and on the side that is close to the display area, and overlaps with the orthographic projection of the barrier dam on the first conductive layer; the third comb tooth overlaps with the orthographic projection of the barrier dam on the first conductive layer, and is located on the side of the orthographic projection of the barrier dam on the first conductive layer that is away from the display area and on the side that is close to the display area.

7. The display panel of claim 6, wherein, The third comb tooth portion includes: a third comb handle and a plurality of third comb teeth connected to the third comb handle; the plurality of third comb teeth are arranged at intervals along a second direction. The third protective pattern is block-shaped and extends along the second direction, which is the direction from the fan-out area to the display area.

8. The display panel of claim 6 or 7, wherein, Along the second direction, the second comb teeth and the third comb teeth are at least partially opposite each other; the second direction is the direction from the fan-out area to the display area; The second protective pattern and the third protective pattern are interconnected and form an integral structure.

9. The display panel according to any one of claims 2 to 8, wherein, The touch layer also includes a plurality of second signal lines located in the peripheral area; the second signal lines surround at least a portion of the display area; One of the second signal lines is connected to at least one of the protection patterns; the second signal line is used to transmit a constant voltage signal.

10. The display panel of claim 9, wherein, The touch layer includes: a first touch sub-layer and a second touch sub-layer; the first touch sub-layer is located between the second touch sub-layer and the first conductive layer; One of the protective patterns is located in one of the first touch sublayers or the second touch sublayer.

11. The display panel of claim 10, wherein, The second signal line is located in the first touch sub-layer; The protective pattern located in the first touch sub-layer is connected to the second signal line and is an integral structure.

12. The display panel of claim 9, wherein, The touch layer includes: a first touch sub-layer and a second touch sub-layer; the first touch sub-layer is located between the second touch sub-layer and the first conductive layer; One of the protective patterns includes two stacked and electrically connected sub-protective patterns, the orthographic projections of the two sub-protective patterns on the first conductive layer being coincident or substantially coincident; The two sub-protection patterns are located in the first touch sub-layer and the second touch sub-layer, respectively.

13. The display panel of claim 12, wherein, The second signal line is located in the first touch sub-layer; The sub-protective pattern located in the first touch sub-layer of the protective pattern is connected to the second signal line and forms an integral structure.

14. The display panel according to any one of claims 9 to 13, wherein, The multiple second signal lines include an anti-static signal line and a crack detection signal line; The second signal line connected to the protective pattern is either the anti-static signal line or the crack detection signal line.

15. The display panel of claim 14, wherein, The orthographic projection of the crack detection signal line onto the first conductive layer is located on the side of the orthographic projection of the barrier dam onto the first conductive layer that is away from the display area; The crack detection signal line is connected to the first protective pattern.

16. The display panel according to claim 14, wherein, The orthographic projection of the anti-static signal line on the first conductive layer is located on the side of the orthographic projection of the barrier dam on the first conductive layer that is closer to the display area; The anti-static signal line is connected to the second or third protective pattern.

17. The display panel of any one of claims 1-16, further comprising: Encapsulation layer; Along the thickness direction of the display panel, the encapsulation layer is located between the barrier dam and the touch layer; The orthographic projection of the barrier dam onto the first conductive layer is located within the orthographic projection range of the encapsulation layer onto the first conductive layer.

18. The display panel according to any one of claims 1 to 17, wherein, The display panel further includes: a planarization layer; The planarization layer is located between the first conductive layer and the touch layer; at least a portion of the blocking dam is disposed on the same layer as the planarization layer; the planarization layer includes a first pattern located in the peripheral area; the blocking dam is located on the side of the first pattern closer to the display area; Along the thickness direction of the display panel, a portion of the first pattern near the display area overlaps with a portion of the protective pattern away from the display area; the orthographic projection of the comb teeth on the first conductive layer is located within the orthographic projection range of the area occupied by the first pattern and the protective pattern on the first conductive layer.

19. A display device comprising: The display panel as claimed in any one of claims 1 to 18, and the circuit board electrically connected to the display panel.

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