Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, and the display panel comprises a substrate which comprises a display area and a non-display area, and the non-display area comprises an edge area and a blocking area close to the display area; the blocking dams are arranged in the blocking area and are arranged in parallel from the display area to the edge area; the first conducting layers are located in the display area and the edge area respectively, and in the display area and the edge area, the first conducting layers are located on the same side of the substrate; the filling layer is arranged in the blocking region, and the region between the adjacent blocking dams is filled with the filling layer; the second conducting layer is located on the side, away from the substrate, of the first conducting layer and extends to the edge area along the side, away from the substrate, of the display area covering filling layer; and an organic dielectric layer disposed between the first conductive layer and the second conductive layer.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] In OLED (Organic Light-Emitting Diode) display panels, one of the design purposes of the barrier dam is to block the organic film layer within the display area, preventing it from flowing into the non-display area at the edge of the display area. The touch electrodes in OLED display panel designs typically need to be led from the display area to the pads in the non-display area via touch leads or conductive layers to connect with the touch IC (Integrated Circuit) to achieve effective control of the touch area. Because the barrier dam has a certain height, touch traces extend from the display area across the barrier dam into the non-display area. During the etching process of the touch traces in the barrier dam area, photoresist residue at the bottom of the barrier dam sidewall can leave metal residue on the touch traces. This metal residue may connect adjacent touch traces, causing short circuits. Summary of the Invention

[0003] The purpose of this invention is to provide a display panel and display device to solve the problem of short circuits between adjacent touch traces. The specific technical solution is as follows:

[0004] A first aspect of this application provides a display panel, comprising:

[0005] A substrate includes a display area and a non-display area, wherein the non-display area includes an edge area and a blocking area adjacent to the display area;

[0006] A barrier dam is provided in the blocking area and arranged in parallel along the display area to the edge area;

[0007] A first conductive layer is located in the display area and the edge area, respectively, and in the display area and the edge area, the first conductive layer is located on the same side of the substrate.

[0008] A filling layer is disposed in the blocking area and fills the area between adjacent blocking dams;

[0009] The second conductive layer is located on the side of the first conductive layer away from the substrate, and extends along the display area, covering the side of the filling layer away from the substrate, to the edge area.

[0010] An organic dielectric layer is disposed between the first conductive layer and the second conductive layer.

[0011] In some embodiments, the filler layer is made of organic materials.

[0012] In some embodiments, near the blocking area in the display area, the organic dielectric layer has a through-hole first via, through which the first conductive layer and the second conductive layer are connected. Near the blocking area in the edge area, the organic dielectric layer has a through-hole second via, through which the first conductive layer and the second conductive layer are connected.

[0013] In some embodiments, in the display area, a light-emitting functional layer is provided on the side of the substrate facing the first conductive layer, and an encapsulation layer is provided on the side of the light-emitting functional layer away from the substrate. The encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer. The distance between the side of the barrier dam away from the substrate and the substrate is greater than the distance between the side of the organic layer away from the substrate and the substrate.

[0014] In some embodiments, the organic dielectric layer extends from the side of the display area that covers the fill layer away from the substrate to the edge area, and the organic dielectric layer is made of the same material as the fill layer.

[0015] In some embodiments, in the display area and the blocking area, the side of the organic dielectric layer away from the substrate is in the same plane.

[0016] In some embodiments, the organic dielectric layer partially covers the surface of the barrier dam away from the substrate in the barrier region.

[0017] In some embodiments, both the first conductive layer and the second conductive layer are organic conductive polymers.

[0018] In some embodiments, in the display area and the edge area, the orthographic projection of the first conductive layer onto the substrate is located within the orthographic projection range of the second conductive layer onto the substrate.

[0019] In some embodiments, in the edge region, a control unit is provided on the side of the second conductive layer away from the substrate, and the second conductive layer is connected to the control unit.

[0020] A second aspect of this application provides a display device including the display panel described in any of the first aspects.

[0021] Beneficial effects of the embodiments of the present invention:

[0022] The display panel and display device provided in this embodiment of the invention fill the area between adjacent barrier dams with a filling layer. This eliminates the height difference of the barrier dams without reducing their height. This facilitates the flow of the organic layer in the display area to the non-display area and also facilitates the patterning of the second conductive layer. The second conductive layer does not need to pass through the bottom of the sidewall of the barrier dam, reducing the risk of short circuits between adjacent second conductive layers due to metal residue during the patterning process. During the preparation of the first conductive layer, even if there is metal residue in the metal layer where the first conductive layer is located, it passes through the bottom of the sidewall of the barrier dam during the patterning process. The barrier area only has a single layer of the second conductive layer, and the barrier area does not contain the first conductive layer. This effectively avoids short circuits caused by metal residue at the bottom of the sidewall of the barrier dam connecting adjacent first conductive layers.

[0023] Meanwhile, an organic dielectric layer is set between the first and second conductive layers as touch traces, effectively realizing double-layer touch traces. At the same time, the physical properties of the organic dielectric layer as an organic material can improve the bending performance of the display panel.

[0024] Of course, implementing any product or method of the present invention does not necessarily require achieving all of the advantages described above at the same time.

[0025] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings.

[0027] Figure 1 A top view of the barrier dam and the first conductive layer of the display panel in some embodiments;

[0028] Figure 2 for Figure 1 A schematic diagram of the cross-section along the middle MM;

[0029] Figure 3 This is a cross-sectional view of the display panel according to an embodiment of this application.

[0030] The reference numerals in the attached figures are as follows: display area AA, blocking area BB, edge area CC, substrate 1, first via 11, second via 12, blocking dam 2, first inorganic layer 21, organic layer 22, second inorganic layer 23, first conductive layer 3, filling layer 4, second conductive layer 5, organic dielectric layer 6, touch lead 100, and metal residue 200. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art based on this application are within the scope of protection of the present invention.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] In this specification, the terms "film" and "layer" may be interchanged. For example, "conductive layer" may sometimes be replaced with "conductive film." Similarly, "insulating film" may sometimes be replaced with "insulating layer."

[0034] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the meaning of these terms in this disclosure as appropriate.

[0035] In some embodiments, reference Figure 2 As shown, the touch lead 100 extends from the display area to the non-display area across the barrier 2. The barrier 2 has a certain height, creating a step difference between the top and bottom of the barrier 2. (Refer to...) Figure 1As shown, the touch lead 100 extending from the display area to the non-display area is not a single line, but multiple lines, among which... Figure 1 Only two adjacent ones are shown for illustration. The touch lead 100 is not directly formed, but rather a metal layer is covered from the display area to the non-display area. Then the metal layer is patterned to form the touch lead 100. During the patterning process, photoresist is first coated on the side of the metal layer away from the substrate. During the removal of the photoresist, due to the step difference of the barrier dam 2, the photoresist residue at the bottom of the sidewall of the barrier dam 2 cannot be effectively removed. The photoresist acts as an anti-etching layer here, and the metal layer below the residual photoresist is difficult to be effectively etched. After patterning, there is unetched metal residue 200 between adjacent touch leads 100. The metal residue 200 connects the adjacent touch leads, causing the touch lead 100 to short-circuit.

[0036] Lowering the height of the barrier dam 2 to reduce the step difference is not feasible. In the corresponding organic FMLOC display panel, in order to achieve uniform light output in the display area, an organic film layer is usually used as part of the encapsulation layer. Since the organic film layer has the characteristic of fluidity during the manufacturing process, lowering the height of the barrier dam 2 will not effectively prevent the organic film layer from flowing from the display area to the non-display area. Therefore, lowering the height of the barrier dam 2 or directly eliminating the barrier dam 2 is not advisable.

[0037] Based on this, refer to Figure 3 As shown, this application embodiment provides a display panel, including: a substrate 1, including a display area AA and a non-display area, the non-display area including an edge area CC and a blocking area BB near the display area; blocking dams 2, disposed in the blocking area BB, and arranged in parallel along the display area AA to the edge area CC; a first conductive layer 3, respectively located in the display area AA and the edge area CC, the first conductive layer 3 being located on the same side of the substrate 1 in the display area AA and the edge area CC; a filling layer 4, disposed in the blocking area BB, and filling the area between adjacent blocking dams 2; a second conductive layer 5, located on the side of the first conductive layer 3 away from the substrate 1, and extending along the side of the display area covering the filling layer 4 away from the substrate 1 to the edge area; and an organic dielectric layer 6, disposed between the first conductive layer 3 and the second conductive layer 5.

[0038] In an exemplary embodiment, the substrate 1 can be a flexible substrate, and the material of the flexible substrate may include one or more of the following: PET (polyethylene terephthalate), PEN (polyethylenenaphthalate dimethyl methacrylate), PI (polyimide), YPI (yellow polyimide). The substrate 1 can also be a rigid substrate, and the material of the rigid substrate may be, for example, glass. In the embodiments of this application, since the main purpose of the Flexible Multi-Layer On Cell (FMLOC) display panel is to utilize the bendable characteristics of the flexible structure, the substrate 1 can be a flexible substrate.

[0039] In an exemplary embodiment, the substrate 1 defines a display area and a non-display area, and the non-display area defines an edge area and a blocking area, wherein the display area, the blocking area, and the edge area can be defined by... Figure 3 The dashed lines in the diagram are used to delineate the boundaries.

[0040] In an exemplary embodiment, the non-display area may be set around the display area. The non-display area includes an edge area and a blocking area. The edge area does not necessarily surround the display area. It may be located only on one side of the display area, such as on the lower side of the display area. The non-display area includes an edge area and a blocking area near the display area, or on the upper side of the display area. The non-display area includes an edge area and a blocking area near the display area.

[0041] In an exemplary embodiment, both the first conductive layer 3 and the second conductive layer 5 are touch leads, and the touch function is achieved through the double-layer touch leads of the first conductive layer 3 and the second conductive layer 5.

[0042] In an exemplary embodiment, there may be two, three, or even more barrier dams 2. In this embodiment, there may be two barrier dams 2.

[0043] In an exemplary embodiment, the filling layer 4 is mainly used to fill the "recessed area" formed between the barrier dams 2.

[0044] In an exemplary embodiment, the organic dielectric layer 6 is made of organic material. By utilizing the ductility of organic material, the bending performance of the display panel can be improved.

[0045] In an exemplary embodiment, a first touch electrode layer is connected to the side of the first conductive layer 3 facing the display area, and a second touch electrode layer is connected to the side of the second conductive layer 5 facing the display area. Here, the touch electrode can be the same as the first conductive layer 3 and the second conductive layer 5, both of which are double-layered. The first touch electrode layer and the second touch electrode layer are mutually capacitive. When a finger or other touchable device touches the display area of ​​the display panel, the capacitance between the first touch electrode layer and the second touch electrode layer changes, thereby accurately locating the touch position.

[0046] In this embodiment, the area between adjacent barrier dams 2 is filled by the filling layer 4. Without reducing the height of the barrier dams 2, the step difference in height of the barrier dams 2 is eliminated. This facilitates the flow of the organic layer 22 in the display area to the non-display area, and also facilitates the patterning of the second conductive layer 5. The second conductive layer 5 does not need to pass through the bottom of the side wall of the barrier dam 2, reducing the risk of short circuits between adjacent second conductive layers 5 due to metal residue during the patterning process. During the preparation of the first conductive layer 3, even if the metal layer where the first conductive layer 3 is located passes through the bottom of the side wall of the barrier dam 2 and there is metal residue during the patterning process of forming the first conductive layer 3, there is only a single layer of the second conductive layer 5 in the barrier area. The first conductive layer 3 does not exist in the barrier area, effectively avoiding the short circuit caused by the connection of adjacent first conductive layers 3 due to metal residue at the bottom of the side wall of the barrier dam 2.

[0047] Meanwhile, the first conductive layer 3 and the second conductive layer 5 serve as touch traces, and an organic dielectric layer 6 is disposed between the first conductive layer 3 and the second conductive layer 5. This effectively achieves double-layer traces for the touch traces, while the physical properties of the organic dielectric layer 6 as an organic material can improve the bending performance of the display panel.

[0048] It should be noted that, in this embodiment, the first conductive layer 3 and the second conductive layer 5 are not used as touch traces as... Figure 1 Only two are shown, but there are multiple ones. The connection between any two adjacent first conductive layers 3 can effectively prevent short circuits.

[0049] It is understood that, in the embodiments of this application, the display panel can be an organic FMLOC display panel.

[0050] In some embodiments, the filling layer 4 is made of organic materials.

[0051] In an exemplary embodiment, the filling layer 4 can be made of organic materials such as photoresist, polyimide, acrylic, polyethylene terephthalate, or acrylates. The fluidity of organic materials is used to coat the area between the barrier dams 2, which is beneficial for filling the area and making the surface of the side away from the substrate 1 flat. Inorganic materials are usually prepared by chemical vapor deposition (CVD). CVD coatings are thinner, and since the barrier dams 2 have a certain height, they cannot effectively fill the "recessed" area between the barrier dams 2. For example, the height of the barrier dam 2 (the distance from the side away from the substrate 1 to the side facing the substrate 1) is generally 5 μm, while the thickness of the inorganic film layer formed by CVD deposition is generally only 3000 Å, about 0.3 μm. The film layer is too thin to effectively fill the "recessed" area. If multiple chemical vapor depositions are performed, the filling time is too long and the time cost is too high. Compared with inorganic materials, the organic material filling layer 4 can more effectively fill the "recessed" area so that the side of the filling layer 4 away from the substrate 1 is flush with the side of the barrier dam 2 away from the substrate 1.

[0052] In some embodiments, reference Figure 3 As shown, near the blocking area in the display area, the organic dielectric layer 6 has a through-hole 11, and the first conductive layer 3 and the second conductive layer 5 are connected through the first through-hole 11. Near the blocking area in the edge area, the organic dielectric layer 6 has a through-hole 12, and the first conductive layer 3 and the second conductive layer 5 are connected through the second through-hole 12.

[0053] In this embodiment, the first conductive layer 3 and the second conductive layer 5 serve as double-layer traces for touch control. Only in the blocking area are they single-layer traces achieved by drilling holes through the first via 11 and the second via 12. The first via 11 connects the first conductive layer 3 and the second conductive layer 5, facilitating subsequent power supply to the first conductive layer 3 in the display area. Simultaneously, the second conductive layer 5, located away from the substrate 1, is connected to the power supply. While connecting to and supplying power to the first conductive layer 3, the parallel connection of the first and second conductive layers 3 and 5 helps reduce the resistance of both layers in the display area, as well as the resistance of the first and second touch electrodes. Similarly, the second via 12 connects the first conductive layer 3 and the second conductive layer 5, facilitating subsequent power supply to the first conductive layer 3 in the edge area and further reducing the resistance of the first and second conductive layers 3 and 5 in the edge area.

[0054] In some embodiments, reference Figure 3As shown, in the display area, a light-emitting functional layer (not shown in the figure) is provided on the side of the substrate 1 facing the first conductive layer 3, and an encapsulation layer is provided on the side of the light-emitting functional layer away from the substrate 1. The encapsulation layer includes a first inorganic layer 21, an organic layer 22, and a second inorganic layer 23. The distance between the side of the barrier dam 2 away from the substrate 1 and the substrate 1 is greater than the distance between the side of the organic layer 22 away from the substrate 1 and the substrate 1.

[0055] In an exemplary embodiment, the organic layer 22 can be made of organic materials, such as polyimide, acrylic, polyethylene terephthalate, or acrylates.

[0056] In an exemplary embodiment, the materials of both the first encapsulation layer and the second encapsulation layer can be inorganic materials, such as any one or more of silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON).

[0057] In an exemplary embodiment, the light-emitting functional layer may include a hole injection layer (HIL), a hole transport layer (HTL), an electron block layer (EBL), an emitting layer (EML), a hole block layer (HBL), an electron transport layer (ETL), and an electron injection layer (EIL) stacked sequentially.

[0058] In an exemplary embodiment, the encapsulation layer may further include more inorganic and organic layers 22, which are not specifically limited here.

[0059] It should be noted that the encapsulation layer is located between the first conductive layer 3 and the substrate 1.

[0060] In an exemplary embodiment, after the first inorganic layer 21 is prepared by chemical vapor deposition (CVD), an organic layer 22 is prepared on the surface of the first inorganic layer 21 by coating. The coating can be any one or more of spraying, spin coating and inkjet printing. Then, a second inorganic layer 23 is prepared on the surface of the organic layer 22 by chemical vapor deposition.

[0061] In this embodiment, after the light-emitting functional layer is fabricated, it is encapsulated using an encapsulation layer. First, the first inorganic layer 21 covers the light-emitting functional layer up to the sidewall of the barrier dam 2 closest to the display area. Then, the organic layer 22 covers the surface of the first inorganic layer 21 up to the sidewall of the barrier dam 2 closest to the display area. Next, the second inorganic layer 23 covers the surface of the organic layer 22 up to the sidewall of the barrier dam 2 closest to the display area. The first inorganic layer 21 and the second inorganic layer 23 are inorganic materials, and the organic layer 22 is used as a planarization layer to planarize the first inorganic layer 21 and the second inorganic layer 23. The process is equivalent to creating a planarization layer on the light-emitting functional layer of the display area, so that the light emitted by the light-emitting functional layer is more uniform, which is beneficial to improving the display quality of the display panel. The distance between the side of the blocking dam 2 away from the substrate 1 and the substrate 1 is greater than the distance between the side of the organic layer 22 away from the substrate 1 and the substrate 1. That is, the height of the blocking dam 2 is higher than the height of the organic layer 22. When the organic layer 22 is formed by coating, spin coating or inkjet printing, the blocking dam 2, which is closest to the display area, is used to block the flow of the organic layer 22 from the display area to the edge area, thereby preventing the organic layer 22 from overflowing from the display area to the edge area and thus affecting the display panel.

[0062] At the same time, the first inorganic layer 21 and the second inorganic layer 23 effectively cover the organic layer 22, preventing external moisture from invading the organic layer 22.

[0063] In some embodiments, reference Figure 3 As shown, the organic dielectric layer 6 extends from the side of the display area covering the filling layer 4 away from the substrate 1 to the edge area, and the organic dielectric layer 6 is made of the same material as the filling layer 4.

[0064] In an exemplary embodiment, the organic dielectric layer 6 and the filling layer 4 are both made of the same organic material, such as polyimide, acrylic, polyethylene terephthalate, or acrylate.

[0065] In this embodiment, after the filling layer 4 is prepared, the first conductive layer 3 is prepared. The metal layer containing the first conductive layer 3 extends from the display area to the edge area. The metal layer is then patterned to form the first conductive layer 3. In the blocking area, the presence of the filling layer 4 eliminates the height difference of the blocking dam 2, which helps to prevent the organic planarization layer in the display area from flowing to the non-display area. During the preparation of the first conductive layer 3, the elimination of the height difference effectively prevents the metal layer containing the first conductive layer 3 from passing through the bottom of the sidewall of the blocking dam 2, and also effectively prevents... During the patterning of the first conductive layer 3, the presence of photoresist residue at the bottom of the sidewall of the barrier dam 2 leads to metal residue along the bottom of the sidewall of the barrier dam 2, causing a short circuit between adjacent first conductive layers 3. The organic dielectric layer 6, as an organic material, is prepared in the display area to the side of the first conductive layer 3 away from the substrate 1. The organic material further has a planarization effect, that is, the surface of the organic dielectric layer 6 away from the substrate 1 is flat. Correspondingly, the second touch layer where the second conductive layer 5 is prepared on the side of the organic conductive layer away from the substrate 1 is flat, which is beneficial to improving the accuracy of touch.

[0066] In addition, the organic dielectric layer 6 and the filling layer 4 are made of the same material. The organic dielectric layer 6 covers the surface of the filling layer 4 away from the substrate 1, which is beneficial for the adhesion of the organic dielectric layer 6 and the filling layer 4. At the same time, the same material saves material costs.

[0067] In some embodiments, reference Figure 3 As shown, in the display area and the blocking area, the side of the organic dielectric layer 6 away from the substrate 1 is in the same plane.

[0068] In this embodiment, when the organic dielectric layer 6 extends from the display area to the blocking area, the organic material of the organic dielectric layer 6 is used to achieve a flat surface on the upper surface of the organic dielectric layer 6. The flat surface facilitates the patterning of the second conductive layer 5. At the same time, the flat surface of the second touch electrode layer, which is in the same layer as the second conductive layer 5, is beneficial to the mutual capacitance between the first touch electrode layer and the second touch electrode layer. When a finger or other touchable device touches the display area of ​​the display panel, the capacitance between the first touch electrode layer and the second touch electrode layer changes, thereby accurately locating the touch position.

[0069] In some embodiments, reference Figure 3 As shown, the organic dielectric layer 6 partially covers the surface of the barrier dam 2 away from the substrate 1 in the barrier region.

[0070] As can be seen from the above embodiments, the organic dielectric layer 6 extends from the side of the display area covering the filling layer 4 away from the substrate 1 to the edge area. That is, the organic dielectric layer 6 partially covers the surface of the filling layer 4 in the barrier area. The filling layer 4 is used to fill the "recessed" area between the barrier dams 2 to eliminate the step difference caused by the height of the barrier dams 2. The side of the filling layer 4 away from the substrate 1 is flush with the side of the barrier dam 2 away from the substrate 1. During the preparation process, the organic dielectric layer 6 extends from the display area across the barrier area to the edge area, while covering the surface of the barrier dam 2 away from the substrate 1. This effectively avoids the formation of voids similar to bubbles between the barrier dam 2 and the organic dielectric layer 6 due to lack of filling. After the patterning of the second conductive layer 5 is completed, voids may cause the second conductive layer 5 to collapse towards the barrier dam 2, affecting the yield of the display panel. The organic dielectric layer 6 covers the side of the barrier dam 2 away from the substrate 1, that is, the organic dielectric layer 6 is used to fill the possible voids, effectively avoiding the generation of such voids.

[0071] In some embodiments, the first conductive layer 3 and the second conductive layer 5 are both organic conductive polymers.

[0072] As can be seen from the above embodiments, the organic dielectric layer 6 between the first conductive layer 3 and the second conductive layer 5 is made of organic material. Accordingly, the display panel of this application embodiment can be an organic multi-layer flexible structure (Flexible Multi-Layer On Cell, FMLOC), i.e., an organic FMLOC display panel. The organic FMLOC display panel has the characteristics of good bending performance and high bending strength. By using organic conductive polymers as touch leads for both the first conductive layer 3 and the second conductive layer 5, the conductivity and flexibility of the organic conductive polymers are also utilized to further improve the bending performance of the display panel and avoid the risk of wire breakage of the first conductive layer 3 and the second conductive layer 5 during the bending process of the display panel, thereby causing the touch function of the display panel to fail.

[0073] In some embodiments, reference Figure 3 As shown, in the display area and the edge area, the orthographic projection of the first conductive layer 3 onto the substrate 1 is located within the orthographic projection range of the second conductive layer 5 onto the substrate 1.

[0074] In an exemplary embodiment, in the display area, the orthographic projection of the first conductive layer 3 onto the substrate 1 may coincide with the orthographic projection of the second conductive layer 5 onto the substrate 1, or the orthographic projection of the first conductive layer 3 onto the substrate 1 may be smaller than the orthographic projection of the second conductive layer 5 onto the substrate 1. In the edge area, the orthographic projection of the first conductive layer 3 onto the substrate 1 may coincide with the orthographic projection of the second conductive layer 5 onto the substrate 1, or the orthographic projection of the first conductive layer 3 onto the substrate 1 may also be smaller than the orthographic projection of the second conductive layer 5 onto the substrate 1.

[0075] In this embodiment, in the display area, the wider the first conductive layer 3 serves as the touch lead, the more likely it is that the adjacent first conductive layers 3 will be connected, causing a short circuit in the first conductive layer 3. The orthographic projection of the first conductive layer 3 on the substrate 1 is within the orthographic projection range of the second conductive layer 5 on the substrate 1. By setting the width of the first conductive layer 3 to be small, the risk of short circuit in the first conductive layer 3 due to the small spacing between adjacent first conductive layers 3 during the patterning process is effectively avoided.

[0076] In some embodiments, in the edge region, a control unit (not shown in the figure) is provided on the side of the second conductive layer 5 away from the substrate 1, and the second conductive layer 5 is connected to the control unit.

[0077] In an exemplary embodiment, the control unit can be directly disposed on the side of the second conductive layer 5 away from the substrate 1, or the substrate 1 can be bent to the side away from the light emission direction of the display area through, for example, COP (Chip on Panel) technology, to form a bonding area. Here, the control unit can be disposed on the side of the bonding area away from the light emission direction of the display area, without specific limitation.

[0078] In an exemplary embodiment, the control unit may be a touch control unit.

[0079] In the above embodiments, the first conductive layer 3 is connected to the first touch electrode layer on the side facing the display area, and the second conductive layer 5 is connected to the second touch electrode layer on the side facing the display area. The first touch electrode layer and the second touch electrode layer are mutually capacitive. When a finger or other touchable device touches the display area of ​​the display panel, the capacitance between the first touch electrode layer and the second touch electrode layer changes, thereby accurately locating the touch position. The capacitance change between the first touch electrode layer and the second touch electrode layer is sent to the control unit through the second conductive layer 5. The control unit can control the display panel to provide corresponding touch feedback, such as opening an application, pausing the display, starting the display, etc.

[0080] It is understandable that in the display panel of this embodiment, the first conductive layer 3, as the middle layer of the display panel, needs to be additionally led out to the control unit to connect with the control unit, which is more difficult than connecting the second conductive layer 5 to the control unit.

[0081] Based on the same inventive concept, this application provides a display device, including the display module provided in any of the above embodiments. In some examples, the display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital camera, or navigator. This embodiment does not specifically limit this.

[0082] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A display panel, characterized in that, include: A substrate includes a display area and a non-display area, wherein the non-display area includes an edge area and a blocking area adjacent to the display area; A barrier dam is provided in the blocking area and arranged in parallel along the display area to the edge area; A first conductive layer is located in the display area and the edge area, respectively, and in the display area and the edge area, the first conductive layer is located on the same side of the substrate. A filling layer is disposed in the blocking area and fills the area between adjacent blocking dams; The second conductive layer is located on the side of the first conductive layer away from the substrate, and extends along the display area, covering the side of the filling layer away from the substrate, to the edge area. An organic dielectric layer is disposed between the first conductive layer and the second conductive layer.

2. The display panel according to claim 1, characterized in that, The filling layer is made of organic materials.

3. The display panel according to claim 1, characterized in that, Near the blocking area in the display area, the organic dielectric layer has a through-hole first via, through which the first conductive layer and the second conductive layer are connected. Near the blocking area in the edge area, the organic dielectric layer has a through-hole second via, through which the first conductive layer and the second conductive layer are connected.

4. The display panel according to claim 1, characterized in that, In the display area, a light-emitting functional layer is provided on the side of the substrate facing the first conductive layer, and an encapsulation layer is provided on the side of the light-emitting functional layer away from the substrate. The encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer. The distance between the side of the barrier dam away from the substrate and the substrate is greater than the distance between the side of the organic layer away from the substrate and the substrate.

5. The display panel according to claim 1, characterized in that, The organic dielectric layer extends from the side of the display area that covers the filling layer away from the substrate to the edge area, and the organic dielectric layer is made of the same material as the filling layer.

6. The display panel according to claim 1, characterized in that, In the display area and the blocking area, the side of the organic dielectric layer away from the substrate is in the same plane.

7. The display panel according to claim 1, characterized in that, The organic dielectric layer partially covers the surface of the barrier dam away from the substrate in the barrier region.

8. The display panel according to claim 1, characterized in that, Both the first conductive layer and the second conductive layer are organic conductive polymers.

9. The display panel according to claim 1, characterized in that, In the display area and the edge area, the orthographic projection of the first conductive layer onto the substrate is located within the orthographic projection range of the second conductive layer onto the substrate.

10. The display panel according to claim 1, characterized in that, In the edge region, a control unit is provided on the side of the second conductive layer away from the substrate, and the second conductive layer is connected to the control unit.

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

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