Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises: a first substrate and a second substrate arranged oppositely; a touch electrode layer, the touch electrode layer is located on a side of the second substrate close to the first substrate; a first binding pad, the first binding pad is located on a side of the first substrate away from the second substrate; and a first conductive layer, the first conductive layer is connected with the touch electrode layer and the first binding pad, and the first conductive layer is at least partially located on a side surface of the first substrate and / or at least partially located on a side surface of the second substrate. The application solves the problem that the touch display panel is prone to poor touch in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] With the development of science and technology, the human-computer interaction interface is continuously developed, and the touch input device is also continuously developed. From resistance type, infrared type, sound wave type to large-scale use of electric field induction type capacitive touch screen, the industry layout in the field of touch screen has been completely changed. At present, the touch structure of the touch display panel is prone to cause touch failure due to scratching and the like. SUMMARY

[0003] The main purpose of the present application is to provide a display panel and a display device to at least solve the problem that the touch display panel is prone to touch failure in the prior art.

[0004] In order to achieve the above purpose, according to one aspect of the present application, a display panel is provided, comprising:

[0005] a first substrate and a second substrate arranged oppositely;

[0006] a touch electrode layer, the touch electrode layer being located on a side of the second substrate close to the first substrate;

[0007] a first binding pad, the first binding pad being located on a side of the first substrate away from the second substrate;

[0008] a first conductive layer, the first conductive layer connecting the touch electrode layer and the first binding pad, the first conductive layer being at least partially located on a side surface of the first substrate and / or at least partially located on a side surface of the second substrate.

[0009] According to another aspect of the present application, a display device is provided, comprising any one of the display panels.

[0010] The first binding pad is located on the side of the first substrate away from the second substrate, the touch electrode layer is arranged between the first substrate and the second substrate, the first conductive layer is at least partially located on the side of the first substrate and / or at least partially located on the side of the second substrate, and the first conductive layer realizes the electrical connection between the touch electrode layer and the first binding pad through the side wiring. The touch electrode layer is arranged between the two substrates, the two substrates can protect the touch electrode layer, and the problem that the touch electrode layer close to the touch operation surface is easily scratched when the external structure scratches the touch operation surface of the display panel is avoided, and the good touch performance of the display panel is ensured. Moreover, the touch electrode layer and the first binding pad located on the side of the first substrate are connected in the side wiring mode, the touch line wiring design of the display panel without the step area is realized, and the narrow frame of the display panel is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0011] The drawings accompanying the specification of the present application form a part thereof, serve to further provide a further understanding of the present application, and together with the specification explain the illustrative embodiments of the present application, and do not constitute an undue limitation on the present application. In the drawings:

[0012] Figure 1 A cross-sectional structure schematic diagram of a first display panel provided in an embodiment of the present application is shown;

[0013] Figure 2 A cross-sectional structure schematic diagram of a second display panel provided in an embodiment of the present application is shown;

[0014] Figure 3 A top view structure schematic diagram of the first display panel provided in an embodiment of the present application is shown;

[0015] Figure 4 A top view structure schematic diagram of the second display panel provided in an embodiment of the present application is shown;

[0016] Figure 5 A cross-sectional structure schematic diagram of a third display panel provided in an embodiment of the present application is shown;

[0017] Figure 6 A top view structure schematic diagram of a first spliced screen provided in an embodiment of the present application is shown;

[0018] Figure 7 A top view structure schematic diagram of a second spliced screen provided in an embodiment of the present application is shown;

[0019] Figure 8 A top view structure schematic diagram of a third spliced screen provided in an embodiment of the present application is shown;

[0020] Figure 9 FIG. 4 shows a top view structural schematic diagram of a fourth tiled screen according to an embodiment of the present application;

[0021] Figure 10 FIG. 5 shows a top view structural schematic diagram of a fifth tiled screen according to an embodiment of the present application;

[0022] Figure 11 FIG. 6 shows a top view structural schematic diagram of a sixth tiled screen according to an embodiment of the present application;

[0023] Figure 12 FIG. 7 shows a top view structural schematic diagram of a seventh tiled screen according to an embodiment of the present application;

[0024] Figure 13 FIG. 8 shows a top view structural schematic diagram of an eighth tiled screen according to an embodiment of the present application;

[0025] Figure 14 FIG. 9 shows a top view structural schematic diagram of a ninth tiled screen according to an embodiment of the present application;

[0026] Figure 15 FIG. 10 shows a structural schematic diagram of a display device according to an embodiment of the present application.

[0027] In the above drawings, the following reference signs are used:

[0028] 10, display panel; 11, first substrate; 111, third side; 112, fourth side; 12, second substrate; 121, first side; 122, second side; 13, touch electrode layer; 131, touch signal line; 14, first binding pad; 15, first conductive layer; 151, first conductive sub-layer; 152, second conductive sub-layer; 17, display device layer; 18, second binding pad; 19, signal line; 20, second conductive layer; 21, first encapsulation layer; 22, second encapsulation layer; 23, third encapsulation layer; 24, fourth encapsulation layer; 25, organic filling layer; 26, pixel driving circuit; 27, self-luminous device; 28, display device. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should fall into the protection scope of the present application.

[0031] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above accompanying drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0032] As introduced in the background, the touch display panel in the prior art is prone to poor touch. To solve the above technical problems, the embodiments of the present application provide a display panel and a display device.

[0033] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should fall into the protection scope of the present application.

[0034] In the present embodiment, a display panel is provided, Figure 1 is a structural schematic diagram of the display panel 10 according to the embodiments of the present application. As shown in the figure, Figure 1 The display panel comprises:

[0035] a first substrate 11 and a second substrate 12 arranged oppositely;

[0036] Specifically, the first substrate 11 and the second substrate 12 can be respectively a hard substrate formed of at least one material in polymer materials such as glass, glass fiber reinforced plastic, or a flexible substrate formed of at least one material in polyimide (PI), polyethylene naphthalate (PEN) or polyethylene terephthalate (PET). The first substrate 11 and the second substrate 12 can be an organic layer or an inorganic layer.

[0037] a touch electrode layer 13, the touch electrode layer 13 being located on the side of the second substrate 12 close to the first substrate 11;

[0038] In particular, the touch control electrode layer 13 includes a touch control signal line 131 for receiving a touch control action and responding, which can work in a self-capacitance mode or a mutual-capacitance mode. In order not to be easily visible, the touch control signal line 131 can be formed of a transparent material such as indium tin oxide (ITO) or a metal material. The pattern of the touch control electrode layer 13 can be an array of semiconductor oxide electrode patterns, an array of nano metal wire electrode patterns, an array of nano carbon material electrode patterns, an array of poly (3,4-ethylenedioxythiophene) (PEDOT) electrode patterns, or a metal grid.

[0039] A first bonding pad 14 is located on the side of the first substrate 11 away from the second substrate 12.

[0040] In particular, the first bonding pad 14 is used to connect a driving chip or a driving circuit board.

[0041] A first conductive layer 15 connects the touch control electrode layer 13 and the first bonding pad 14, and is at least partially located on the side surface 11a of the first substrate 11 and / or at least partially located on the side surface 12a of the second substrate 12.

[0042] In particular, the side surface 11a of the first substrate 11 refers to at least one of the other surfaces of the first substrate 11 except for the two surfaces 11b opposite to the second substrate 12, and the side surface 12a of the second substrate 12 refers to at least one of the other surfaces of the second substrate 12 except for the two surfaces 12b opposite to the first substrate 11. The first conductive layer 15 realizes the electrical connection between the first bonding pad 14 and the touch control electrode layer 13, and the first bonding pad 14 is used to provide a touch control signal for the touch control electrode layer 13.

[0043] In the above embodiment, the first binding pad is located on the side of the first substrate away from the second substrate, the touch electrode layer is arranged between the first substrate and the second substrate, the first conductive layer is at least partially located on the side of the first substrate and / or at least partially located on the side of the second substrate, and the first conductive layer realizes electrical connection between the touch electrode layer and the first binding pad through the side wiring. The touch electrode layer is arranged between the two substrates, and the two substrates can protect the touch electrode layer. When the touch operation surface of the display panel is scratched by external structures, the touch electrode layer close to the touch operation surface is not easily scratched, and the good touch performance of the display panel is ensured. In addition, the touch electrode layer and the first binding pad located on the side of the first substrate are connected through the side wiring, the touch line wiring design of the display panel without a step area is realized, and the narrow frame of the display panel is facilitated.

[0044] The first conductive layer 15 can contact the side of the second substrate 12, the side of the touch electrode layer 13 and the first binding pad 14 respectively to realize electrical connection between the touch electrode layer 13 and the first binding pad 14. The first conductive layer 15 can also contact the side of the touch electrode layer 13, the side of the first substrate 11 and the first binding pad 14 respectively to realize electrical connection between the touch electrode layer 13 and the first binding pad 14. The first conductive layer 15 can also contact the side of the second substrate 12, the side of the touch electrode layer 13, the side of the first substrate 11 and the first binding pad 14 respectively to realize electrical connection between the touch electrode layer 13 and the first binding pad 14.

[0045] The display panel can be a liquid crystal display screen, an organic light emitting diode (OLED) display screen, a quantum dot light emitting diode (QLED) display screen, a mini light emitting diode (mini-LED) display screen, a micro light emitting diode (micro-LED) display screen, an electrophoretic display (EPD) display screen or a light emitting diode (LED) display screen.

[0046] Figure 2 A cross-sectional structure schematic diagram of a display panel of the present application is exemplarily shown as Figure 2As shown, the touch electrode layer 13 is also located on the side surface 12a of the second substrate 12, and the first conductive layer 15 includes a first conductive sub-layer 151 located at least partially on the side surface 11a of the first substrate 11, and the first conductive sub-layer 151 is connected with the first binding pad 14, that is, the first conductive sub-layer 151 covers at least part of the first binding pad 14 and at least part of the side surface 11a of the first substrate 11; a second conductive sub-layer 152 located at least partially on the side surface 12a of the second substrate 12, and the second conductive sub-layer 152 is connected with the touch electrode layer 13 and the first conductive sub-layer 151, that is, the second conductive sub-layer 152 is located on the side surface of the second substrate 12 and in contact with the touch electrode layer 13 on the side surface of the second substrate 12, and the second conductive sub-layer 152 is also in contact with the first conductive sub-layer 151.

[0047] In the above embodiment, first, the touch electrode is arranged on the side surface of the second substrate, which facilitates effective lapping of the touch electrode on the side surface of the second substrate and the first conductive layer on the side surface, and ensures the stability of signal transmission; second, the first conductive layer includes the first conductive sub-layer and the second conductive sub-layer which are electrically connected, the first binding pad is connected through the first conductive sub-layer, and the touch electrode layer is connected through the second conductive sub-layer, thereby further realizing effective electrical connection between the first binding pad and the touch electrode layer; the touch electrode layer extends from between the second substrate and the first substrate to the side surface of the second substrate, and the second conductive sub-layer is located on the side surface of the second substrate and in contact with the touch electrode layer on the side surface, thereby further ensuring that the contact area between the first conductive layer and the touch electrode layer is large, and the connection is firm and reliable.

[0048] In an example embodiment, the width of the trace of the second conductive sub-layer is greater than the width of the trace of the first conductive sub-layer. Since the second conductive sub-layer spans a larger step than the first conductive sub-layer when the trace is on the side surface, the width of the second conductive sub-layer is greater than that of the first conductive sub-layer, which can avoid problems such as breakage of the trace of the second conductive sub-layer on the side surface, and further ensures good signal transmission effect of the second conductive sub-layer.

[0049] A person skilled in the art can select any suitable conductive material as the material of the first conductive sub-layer and the second conductive sub-layer. In this application, the material of the first conductive sub-layer includes copper, and the material of the second conductive sub-layer includes silver.

[0050] In the above embodiment of the application, since copper has high growth precision but the manufacturing conditions are relatively harsh, while the manufacturing process of silver is simple and easy to pad, therefore, considering the process matching degree, copper is selected as the material of the first conductive sub-layer, and silver is selected as the material of the second conductive sub-layer.

[0051] Of course, in addition to the above-mentioned copper and silver, the material of the above-mentioned first conductive sub-layer and the above-mentioned second conductive sub-layer can also be selected from other metal materials. The present application does not make specific limitations in this regard.

[0052] In a specific application process, the above-mentioned first conductive sub-layer 151 can be located on the part of the surface of the above-mentioned second conductive sub-layer 152 away from the above-mentioned second substrate 12 to realize the electrical connection between the above-mentioned first conductive sub-layer 151 and the above-mentioned second conductive sub-layer 152; the above-mentioned second conductive sub-layer 152 can also be located on the part of the surface of the above-mentioned first conductive sub-layer 151 away from the above-mentioned first substrate 11 to realize the electrical connection between the above-mentioned first conductive sub-layer 151 and the above-mentioned second conductive sub-layer 152; the above-mentioned first conductive sub-layer 151 and the above-mentioned second conductive sub-layer 152 overlap in the direction parallel to the light-emitting direction of the display panel and do not overlap in the direction perpendicular to the light-emitting direction of the display panel to realize the electrical connection between the above-mentioned first conductive sub-layer 151 and the above-mentioned second conductive sub-layer 152.

[0053] In the embodiment of the present application, as shown in Figure 2 the above-mentioned first binding pad 14 is located on the surface of the above-mentioned first substrate 11 away from the above-mentioned second substrate 12, and the above-mentioned touch electrode layer 13 is located on the surface and the side of the above-mentioned second substrate 12 close to the above-mentioned first substrate 11. The above-mentioned first conductive sub-layer 151 extends from the side of the above-mentioned first substrate 11 to the back surface of the above-mentioned first substrate 11 and is electrically connected with the above-mentioned first binding pad 14.

[0054] In a specific embodiment, the projection of the above-mentioned first conductive sub-layer on the side of the above-mentioned first substrate on a predetermined plane is a first projection, the projection of the above-mentioned touch electrode layer on the side of the above-mentioned second substrate on the above-mentioned predetermined plane is a second projection, the above-mentioned predetermined plane is perpendicular to the light-emitting direction of the display panel (i.e. the thickness direction of the display panel), and the above-mentioned first projection and the above-mentioned second projection can be non-overlapping, that is, in the top perspective view of the display panel, the above-mentioned first conductive sub-layer on the side of the above-mentioned first substrate and the above-mentioned touch electrode layer on the side of the above-mentioned second substrate are spaced apart.

[0055] In another specific embodiment, as shown in Figure 2 the projection of the above-mentioned first conductive sub-layer 151 on the side 11a of the above-mentioned first substrate 11 on a predetermined plane (the plane of the dashed line in Figure 2 the projection of the above-mentioned touch electrode layer 13 on the side 12a of the above-mentioned second substrate 12 on the above-mentioned predetermined plane is a second projection, the above-mentioned predetermined plane is perpendicular to the light-emitting direction of the display panel, and the above-mentioned first projection and the above-mentioned second projection at least partially overlap, that is, the above-mentioned first projection can coincide with the above-mentioned second projection Figure 2The first projection and the second projection can partially overlap and partially not overlap.

[0056] In the above embodiment, at least part of the first conductive sub-layer on the first substrate side and at least part of the touch electrode layer on the second substrate side are located on the same plane, which facilitates forming the second conductive sub-layer on the plane to electrically connect the first conductive sub-layer and the touch electrode layer, i.e., ensures that the forming process of the second conductive sub-layer is relatively simple and easy to implement.

[0057] On the basis of the above embodiment, the second conductive sub-layer 152 is located on the surface of the first conductive sub-layer 151 away from the first substrate 11 side and on the surface of the touch electrode layer 13 away from the second substrate 12 side.

[0058] Figure 3 And Figure 4 The top view schematic diagrams of two display panels of the present application are respectively exemplarily shown, wherein, Figure 3 (a) and Figure 4 (a) respectively show the structural schematic diagrams of the display panels obtained from the side of the second substrate 12 away from the first substrate 11, Figure 3 (b) and Figure 4 (b) respectively show the structural schematic diagrams of the display panels obtained from the side of the first substrate 11 away from the second substrate 12. Figure 1 And Figure 2 are the display panel sectional views along the AA' direction of Figure 3 or Figure 4 are the display panel sectional views along the BB' direction of Figure 5 or Figure 3 or Figure 4 As shown in Figure 3 and Figure 4 , the first conductive layer 15 is located on at least two sides of the second substrate 12.

[0059] In an optional embodiment, as Figure 3 and Figure 4As shown, the display panel is a capacitive touch display panel, the first conductive layer 15 is located on the first side 121 and the second side 122 of the second substrate 12, the touch electrode layer 13 includes a driving electrode and a sensing electrode, the first conductive layer 15 located on the first side 121 is electrically connected with the driving electrode and the first binding pad 14, and the first conductive layer 15 located on the second side 122 is electrically connected with the sensing electrode and the first binding pad 14. The first conductive layer realizes the electrical connection between the touch electrode and the first binding pad, and realizes the electrical connection between the sensing electrode and the first binding pad, and the first binding pad further ensures the power supply of the sensing electrode and the touch electrode.

[0060] The first conductive layer 15 is also located on at least two sides of the first substrate 11. Specifically, the first conductive layer 15 is located on the third side 111 and the fourth side 112 of the first substrate 11, the third side 111 is located in the same plane as the first side 121, and the fourth side 112 is located in the same plane as the second side 122, the first conductive layer 15 located on the third side is electrically connected with the driving electrode and the first binding pad 14, and the first conductive layer 15 located on the fourth side is electrically connected with the sensing electrode and the first binding pad 14.

[0061] In actual application, when the display panel is touched, the capacitance between the driving electrode and the sensing electrode changes, so that the current on the lead wire connected with the electrode also changes, and the driving chip can determine the touched position according to the current change on the lead wire, thereby realizing the touch function.

[0062] The driving electrode and the sensing electrode can be made of different materials, such as metal blocks, metal grid lines and indium tin oxide.

[0063] For example, the driving electrode and the sensing electrode are respectively located on the surface of the second substrate 12 close to the first substrate 11, and the driving electrode and the sensing electrode are also respectively located on the side of the second substrate 12. The driving electrode and the sensing electrode can be located on the same side of the second substrate 12, and can also be located on different sides of the second substrate 12.

[0064] The arrangement mode of the driving electrode and the sensing electrode on the second substrate can be any suitable mode, for example, the driving electrode and the sensing electrode are arranged alternately on the second substrate.

[0065] The first side and the second side can be adjacent sides of the second substrate 12 as shown in Figure 3 The first side and the second side can also be opposite sides of the second substrate 12 as shown in Figure 4 The first side and the second side can also be opposite sides of the second substrate 12 as shown in

[0066] When the first side and the second side are opposite, the third side and the fourth side are also opposite; when the first side and the second side are adjacent, the third side and the fourth side are also adjacent.

[0067] The driving electrode extends from the surface of the second substrate 12 close to the first substrate 11 to the first side 121 in a first direction intersecting the first side 121, and the sensing electrode extends from the surface of the second substrate 12 close to the first substrate 11 to the second side 122 in a second direction intersecting the second side 122. The first conductive layer 15 covers at least part of the driving electrode on the first side, at least part of the third side, and at least part of the first bonding pad 14, and also covers at least part of the sensing electrode on the second side, at least part of the fourth side, and at least part of the first bonding pad.

[0068] Figure 5 A cross-sectional structure schematic diagram of a display panel of the present application is exemplarily shown as shown in Figure 5 The display panel 10 further comprises a display device layer 17 between the first substrate 11 and the touch electrode layer 13, and the first conductive layer 15 is also on the side of the display device layer 17, wherein the side of the display device layer 17 is at least one of the surfaces of the display device layer other than the two surfaces opposite to the first substrate 11.

[0069] As shown in Figure 5 The first conductive layer 15 sequentially covers at least part of the first bonding pad 14, at least part of the side of the first substrate 11, at least part of the side of the display device layer 17, and at least part of the touch electrode layer 13 on the side of the second substrate 12, so as to realize the electrical connection between the first bonding pad 14 and the touch electrode layer 13.

[0070] It should be noted that the side of the first substrate 11, the side of the display device layer 17, and the side of the second substrate 12 are all insulating.

[0071] The display device layer is a laminated structure, and the display device layer 17 comprises a pixel driving circuit 26. In the case where the display panel is a self-luminous panel, the display device layer 17 further comprises a self-luminous device 27, which can be an organic light emitting device or an inorganic light emitting device. As shown in Figure 2 and Figure 5 The self-luminous device 27 is electrically connected with the pixel driving circuit 26. The display device layer 17 further comprises an organic filling layer 25, which is located between the touch electrode layer 13 and the display device layer 17. The organic filling layer has good fluidity and flatness, and can fill the gap between the touch electrode layer and the display device layer, so as to ensure the overall flatness of the display panel.

[0072] Specifically, as shown in Figure 5 The display panel 10 further comprises:

[0073] A second binding pad 18 located on the side of the first substrate 11 away from the second substrate 12.

[0074] Specifically, the second binding pad 18 is used for connecting a driving chip or a driving circuit board. The second binding pad 18 can be arranged adjacent to the first binding pad, or can be arranged spaced apart from the first binding pad.

[0075] A signal line 19 located on the surface of the display device layer 17 close to the touch electrode layer 13.

[0076] Specifically, the signal line specifically comprises an electrode signal line, such as a pixel electrode signal line and a common electrode signal line, or an anode signal line and a cathode signal line.

[0077] A second conductive layer 20 connecting the signal line 19 and the second binding pad 18.

[0078] Specifically, the second conductive layer 20 realizes the electrical connection between the second binding pad 18 and the signal line 19, and the second binding pad 18 is used for supplying power to the signal line 19. The second conductive layer 20 can be overlapped on the surface of the signal line 19 away from the display device layer 17.

[0079] In the embodiment, the second binding pad and the signal line are connected through the second conductive layer, so that the second binding pad can supply power to the signal line.

[0080] In order to further realize the narrow frame of the display panel, as shown in Figure 5As shown, the second conductive layer 20 is at least partially on the side surface of the first substrate 11 and / or the side surface of the display device layer 17. That is, the second conductive layer is arranged on the side surface, and the second conductive layer realizes the electrical connection between the signal line and the second bonding pad through the side surface wiring, realizing the wiring design between the pad and the signal line of the display panel without the step area.

[0081] Further, the second bonding pad 18 is on the surface of the first substrate 11 away from the second substrate 12, and the second conductive layer 20 is on the surface of the second bonding pad 18 away from the first substrate 11, on the side surface of the first substrate 11, on the side surface of the display device layer 17, and on at least part of the surface of the signal line 19.

[0082] The person skilled in the art can select any suitable conductive material as the material of the second conductive layer. In this application, the material of the second conductive layer includes copper.

[0083] The display panel of the present application Figure 3 and Figure 4 Exemplarily, the first conductive layer 15 and the second conductive layer 20 are shown in the embodiment where they are on different side surfaces of the first substrate 11. Of course, the first conductive layer 15 and the second conductive layer 20 can also be on the same side surface of the first substrate 11. The relative position relationship of the first conductive layer 15 and the second conductive layer 20 can be set according to the specific needs of the display panel.

[0084] Figure 6 and Figure 7 Exemplarily, the structure of two spliced screens is respectively shown, wherein, Figure 6 A spliced screen obtained by splicing two display panels 10 of the present application is shown, Figure 7 A spliced screen obtained by splicing four display panels 10 of the present application is shown. As Figure 6 As shown, the display panel 10 is a sub-screen of the spliced screen, and the display panel 10 only has one side surface that needs to be spliced with other sub-screens. In this case, the first conductive layer 15 and the second conductive layer 20 can be on different side surfaces of the first / second substrate, or the first conductive layer 15 and the second conductive layer 20 can be on the same side surface of the first / second substrate, as long as the first substrate has a surface that can be spliced. As Figure 7As shown, the above-mentioned display panel 10 is a sub-screen of the splicing screen, and all three sides of the above-mentioned display panel 10 need to be spliced ​​with other sub-screens. In order to ensure that the display panel 10 has enough sides to be spliced ​​with other sub-screens, the above-mentioned first conductive layer 15 and the above-mentioned second conductive layer 20 can only be located on the same side of the above-mentioned first substrate / the above-mentioned second substrate.

[0085] Figures 8 to 14 An exemplary top view of a splicing screen obtained by splicing four display panels 10 of this application is shown. The top view is a structural schematic diagram obtained by looking down at the splicing screen from the side of the first substrate 11 away from the second substrate 12.

[0086] in, Figure 8 and Figure 9 Two schematic diagrams are given showing the positions of the second conductive layer 20 on the first substrate 11, such as... Figure 8 As shown, in the above-mentioned splicing screen, the second conductive layer 20 extends from one side of the display panel 10 ( Figure 8 The lower side shown extends to the surface of the first substrate 11.

[0087] like Figure 9 As shown, in the above-mentioned splicing screen, one of the above-mentioned display panels corresponds to two of the above-mentioned second conductive layers 20, and the two above-mentioned second conductive layers 20 extend from two opposite sides of the display panel 10. Figure 9 The upper and lower sides shown extend to the surface of the first substrate 11.

[0088] Figure 10 A schematic diagram of the position of the first conductive layer 15 on the first substrate 11 is given, as follows: Figure 10 As shown, in the above-mentioned splicing screen, one of the above-mentioned display panels corresponds to two of the above-mentioned first conductive layers 15, and the two above-mentioned first conductive layers 15 extend from two opposite sides of the display panel 10. Figure 10 The left and right sides shown extend to the surface of the first substrate 11.

[0089] Figures 11 to 14 An exemplary diagram illustrates the relative positions of the first conductive layer 15 and the second conductive layer 20 on the first substrate 11, as shown below. Figure 11 As shown, in the above-mentioned splicing screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, and the first conductive layer 15 extends from two opposite sides of the display panel 10. Figure 11 The second conductive layer 20 extends from the remaining side of the display panel 10 (shown as left and right sides) to the surface of the first substrate 11. Figure 11 The lower side shown extends onto the surface of the first substrate 11. Figure 12As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11. Figure 12 As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11. Figure 12 As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11. Figure 13 As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11. Figure 13 As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11. Figure 14 As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11. Figure 13 As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11.

[0090] As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11. Figure 2 As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11.

[0091] As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11.

[0092] The display device 28 provided by the embodiment of the present application also has a structure as shown in the figure. Figure 15 As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11. Figure 15 As shown in the above spliced screen, the first conductive layer 15 and the second conductive layer 20 are located on different sides of the display panel 10, the first conductive layer 15 extends from two opposite sides of the display panel 10 (the left and right sides shown in the figure) to the surface of the first substrate 11, and the second conductive layer 20 extends from the remaining two opposite sides of the display panel 10 (the upper and lower sides shown in the figure) to the surface of the first substrate 11.

[0093] In the above embodiment, the touch electrode layer in the display panel of the display device is arranged between the two substrates, and the two substrates can protect the touch electrode layer, thereby avoiding the problem that the touch electrode layer close to the touch operation surface is easily scratched when the touch operation surface of the display panel is scratched by external structures, and ensuring good touch performance of the display panel. In addition, the touch electrode layer and the first bonding pad located on the back side of the first substrate are connected in a side wiring manner, the touch line wiring design of the display panel without a step area is realized, and the narrow frame of the display panel is facilitated.

[0094] Specifically, as shown in Figure 6 and Figure 7 The plurality of display panels 10 have no step area, and the plurality of display panels 10 can be spliced into a spliced panel. Figure 6 Exemplarily, an embodiment in which two display panels 10 are spliced to obtain a spliced panel is shown, Figure 7 Exemplarily, an embodiment in which four display panels 10 are spliced to obtain a spliced panel is shown, and the spliced panel of the present application is not limited thereto.

[0095] It should also be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or device that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article, or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of another identical element in the process, method, article, or device that includes the element.

[0096] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0097] 1) In the display panel of the present application, the first bonding pad is located on the side of the first substrate away from the second substrate, the touch electrode layer is arranged between the first substrate and the second substrate, the first conductive layer is at least partially located on the side surface of the first substrate and / or at least partially located on the side surface of the second substrate, and the first conductive layer realizes electrical connection between the touch electrode layer and the first bonding pad through side wiring. The touch electrode layer is arranged between the two substrates, and the two substrates can protect the touch electrode layer, thereby avoiding the problem that the touch electrode layer close to the touch operation surface is easily scratched when the touch operation surface of the display panel is scratched by external structures, and ensuring good touch performance of the display panel. In addition, the touch electrode layer and the first bonding pad located on the back side of the first substrate are connected in a side wiring manner, the touch line wiring design of the display panel without a step area is realized, and the narrow frame of the display panel is facilitated.

[0098] 2) In the display panel of the display device of this application, the touch electrode layer is disposed between two substrates. The two substrates can protect the touch electrode layer and prevent the touch electrode layer near the touch operation surface from being easily scratched when the touch operation surface of the display panel is scratched by external structures, thus ensuring good touch performance of the display panel. Furthermore, this application uses a side-wiring method to connect the touch electrode layer and the first bonding pad located on one side of the back of the first substrate, realizing a touch line wiring design for the display panel without a step area, which is beneficial for achieving a narrow bezel of the display panel.

[0099] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, include: A first substrate and a second substrate arranged opposite to each other; A touch electrode layer, wherein the touch electrode layer is located on the side of the second substrate closer to the first substrate; The first bonding pad is located on the side of the first substrate away from the second substrate; A first conductive layer connects the touch electrode layer and the first bonding pad, and the first conductive layer is at least partially located on the side surface of the first substrate and at least partially located on the side surface of the second substrate. The first conductive layer is located on at least two sides of the second substrate. The first conductive layer is located on a first side and a second side of the second substrate. The touch electrode layer includes a driving electrode and a sensing electrode. The first conductive layer located on the first side is electrically connected to the driving electrode and the first bonding pad. The first conductive layer located on the second side is electrically connected to the sensing electrode and the first bonding pad.

2. The display panel according to claim 1, characterized in that, The touch electrode layer is also located on the side of the second substrate, and the first conductive layer includes: A first conductive sublayer is located at least partially on the side of the first substrate, and the first conductive sublayer is connected to the first bonding pad. The second conductive sublayer is at least partially located on the side of the second substrate, and the second conductive sublayer is connected to the touch electrode layer and the first conductive sublayer, respectively.

3. The display panel according to claim 2, characterized in that, The projection of the first conductive electrode layer located on the side of the first substrate onto a predetermined plane is the first projection, and the projection of the touch electrode layer located on the side of the second substrate onto the predetermined plane is the second projection. The first projection and the second projection at least partially overlap, and the predetermined plane is perpendicular to the light emission direction of the display panel.

4. The display panel according to claim 1, characterized in that, The first side and the second side are adjacent or opposite to each other.

5. The display panel according to any one of claims 1 to 4, characterized in that, The display panel also includes: The display device layer is located between the first substrate and the touch electrode layer, and the first conductive layer is also located on the side of the display device layer.

6. The display panel according to claim 5, characterized in that, The display panel also includes: The second bonding pad is located on the side of the first substrate away from the second substrate; The signal line is located on the surface of the display device layer near the touch electrode layer; The second conductive layer connects the signal line and the second bonding pad.

7. The display panel according to claim 6, characterized in that, The second conductive layer is located on the second bonding pad, on the side of the first substrate, on the side of the display device layer, and on the surface of the signal line.

8. The display panel according to claim 6, characterized in that, The signal lines include electrode signal lines.

9. The display panel according to claim 6, characterized in that, The first conductive layer and the second conductive layer are located on the same side or different sides of the first substrate.

10. The display panel according to claim 2 or 3, characterized in that, The display panel also includes: A first encapsulation layer covers the second conductive sublayer; The second encapsulation layer covers a portion of the first conductive layer located on the first bonding pad and the first encapsulation layer.

11. The display panel according to claim 6, characterized in that, The display panel also includes: The third encapsulation layer covers the second conductive layer located on the side of the first substrate and on the side of the display device layer; The fourth encapsulation layer covers a portion of the second conductive layer located on the second bonding pad, the third encapsulation layer, and the side of the second substrate.

12. The display panel according to claim 2 or 3, characterized in that, The first conductive layer is made of copper, and the second conductive layer is made of silver.

13. A display device, characterized in that, include: The display panel according to any one of claims 1 to 12.

14. The display device according to claim 13, characterized in that, There are multiple display panels, and the multiple display panels are spliced ​​together to form a splicing panel.

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