Display panel and display device

Abstract

The invention discloses a display panel and a display device, relates to the technical field of display, and can realize frame narrowing of the display panel. The display panel comprises a substrate layer; the driving layer is arranged on one side of the substrate layer; the at least two touch electrode layers are arranged on the side, away from the substrate layer, of the driving layer, and touch electrodes are arranged on the touch electrode layers; the substrate layer comprises a display area and a non-display area, the non-display area comprises a bending area, and the display panel corresponding to the bending area is used for bending; the non-display area is provided with a touch signal line, the touch signal line and at least one touch electrode layer are arranged on the same layer, and the touch signal line is electrically connected with the touch electrodes; the touch signal line crosses the bending area, and the touch signal line in the bending area is used for bending along with bending of the display panel; the bending area is provided with a protective layer, the protective layer is arranged on the side, away from the substrate layer, of the touch signal line, and the material hardness of the protective layer is smaller than that of the touch signal line.

Description

Technical Field

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

[0002] At present, with the continuous development of display technology, consumers have higher and higher requirements for display products, among which the demand for display products with high screen-to-body ratio is increasing. Reducing the narrow bezel can greatly increase the screen-to-body ratio of display products. Usually, part of the non-display area can be bent to the back side of the display panel to reduce the bezel size.

[0003] However, due to the limitations of existing manufacturing processes, it is difficult to further reduce the border of display panels, and the development of narrow-border display panels has entered a bottleneck stage. Summary of the invention

[0004] A display panel and a display device provided in the embodiments of the present application can achieve a narrow frame of the display panel.

[0005] According to a first aspect of an embodiment of the present application, a display panel is provided, comprising:

[0006] substrate layer;

[0007] A driving layer, wherein the driving layer is arranged on one side of the substrate layer;

[0008] At least two touch electrode layers, wherein the at least two touch electrode layers are arranged on a side of the driving layer away from the substrate layer, and the touch electrode layers are provided with touch electrodes;

[0009] The substrate layer includes a display area and a non-display area, wherein the non-display area at least partially surrounds the display area;

[0010] The non-display area includes a bending area, and the display panel corresponding to the bending area is used for bending;

[0011] The non-display area is provided with a touch signal line, the touch signal line is provided in the same layer as at least one touch electrode layer, and the touch signal line is electrically connected to the touch electrode;

[0012] In the direction from the display area to the bending area, the touch signal line crosses the bending area, and the touch signal line in the bending area is used to bend along with the bending of the display panel;

[0013] The bending region is provided with a protection layer, which is provided on a side of the touch signal line away from the substrate layer, and the material hardness of the protection layer is less than the material hardness of the touch signal line.

[0014] In some embodiments, the bending area includes a power signal routing area, a power signal line is arranged in the power signal routing area, and the power signal line is arranged in the driving layer;

[0015] The orthographic projection of the touch signal line on the substrate layer overlaps with the orthographic projection of the power signal wiring area on the substrate layer.

[0016] In some embodiments, the power signal line includes a first power signal line and a second power signal line, and the first power signal transmitted by the first power signal line is greater than the second power signal transmitted by the second power signal line;

[0017] The orthographic projection of the first power signal line on the substrate layer does not overlap with the orthographic projection of the second power signal line on the substrate layer, and the orthographic projection of the touch signal line on the substrate layer overlaps with the orthographic projection of the first power signal line and / or the second power signal line on the substrate layer.

[0018] In some embodiments, the bending area includes a scan drive wiring area and a data drive wiring area, the scan drive wiring area is provided with a scan drive signal line, the data drive wiring area is provided with a data drive signal line, the orthographic projection of the touch signal line on the substrate layer does not overlap with the orthographic projection of the scan drive signal line on the substrate layer, and the orthographic projection of the touch signal line on the substrate layer does not overlap with the orthographic projection of the data drive signal line on the substrate layer.

[0019] In some embodiments, a plurality of data drive wiring regions are provided, some power signal lines are located between adjacent data drive wiring regions, and / or power signal lines are provided between adjacent data drive signal lines.

[0020] In some embodiments, the orthographic projection of the power signal line on the substrate layer does not overlap with the orthographic projection of the data drive signal line on the substrate layer;

[0021] Part of the power signal line is located between the data drive wiring area and the scan drive wiring area.

[0022] In some embodiments, the non-display area further includes a binding area, the bending area is located between the display area and the binding area, binding pins are provided in the binding area, and the touch signal lines are electrically connected to the touch electrodes and the binding pins of the display area respectively.

[0023] In some embodiments, the at least two touch electrode layers include a first touch electrode layer and a second touch electrode layer, the first touch electrode layer is arranged between the drive layer and the second touch electrode layer, and a first organic layer is arranged between the first touch electrode layer and the drive layer; and / or, a first inorganic layer is arranged between the first touch electrode layer and the first organic layer; and / or, a second inorganic layer is arranged between the first touch electrode layer and the protective layer.

[0024] The touch signal line is arranged on the first touch electrode layer and / or the second touch electrode layer, and the orthographic projection of the first organic layer on the substrate layer covers the orthographic projection of the touch signal line on the substrate layer.

[0025] In some embodiments, when the first touch electrode layer is provided with touch signal lines, the first touch electrode layer is provided with first hollowings, the length direction of the first hollowings is provided along the routing direction of the touch signal lines, and the first hollowings are provided between adjacent touch signal lines.

[0026] In some embodiments, the touch signal line is disposed in the second touch electrode layer;

[0027] The orthographic projection of the touch signal line arranged on the second touch electrode layer on the substrate layer overlaps with the orthographic projection of the first hollowing out on the substrate layer.

[0028] In some embodiments, when a first inorganic layer is disposed between the first touch electrode layer and the first organic layer, an orthographic projection of the touch signal line on the substrate layer falls within an orthographic projection of the first inorganic layer on the substrate layer.

[0029] In some embodiments, when a second inorganic layer is disposed between the first touch electrode layer and the protection layer, the orthographic projection of the second inorganic layer on the substrate layer covers the orthographic projection of the touch signal line on the substrate layer.

[0030] In some embodiments, the driving layer includes a third inorganic layer, and the third inorganic layer is disposed between the substrate layer and the power signal line;

[0031] The third inorganic layer is provided with a first groove, the notch of the first groove is arranged in a direction away from the substrate layer, and at least a part of the first groove is arranged in the bending area.

[0032] In some embodiments, the display panel includes a packaging area, the packaging area covers the display area, and an edge of the packaging area overlaps with the bending area.

[0033] According to a second aspect of an embodiment of the present application, a display device is provided, including:

[0034] The display panel in any of the above technical solutions.

[0035] The beneficial effects of this application are:

[0036] The touch signal line in the touch electrode layer crosses the bending area of ​​the non-display area. The touch electrode and the touch signal line do not need to be set across layers and are connected through vias. The two can be set on the same layer, so that the touch signal line in the display panel directly crosses the bending area, that is, the entire touch signal line is bent without considering the via and the shadow area, so that the edge of the bending area can be as close to the edge of the display area as possible to achieve a narrow frame of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0038] Figure 2 A schematic partial top view of a non-display area of ​​a display panel provided in an embodiment of the present application;

[0039] Figure 3 A schematic partial top view of a non-display area of ​​a display panel provided in an embodiment of the present application;

[0040] Figure 4 A schematic partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0041] Figure 5 A schematic top view of another display panel provided in an embodiment of the present application;

[0042] Figure 6 A schematic partial top view of a non-display area of ​​another display panel provided in an embodiment of the present application;

[0043] Figure 7 A schematic partial top view of a display panel provided in an embodiment of the present application;

[0044] Figure 8 A schematic partial top view of another display panel provided in an embodiment of the present application;

[0045] Fig. 9 A schematic partial cross-sectional view of another display panel provided in an embodiment of the present application;

[0046] Fig.10 A schematic partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0047] Fig.11 A schematic partial cross-sectional view of another display panel provided in an embodiment of the present application;

[0048] Fig.12 A schematic partial cross-sectional view of another display panel provided in an embodiment of the present application;

[0049] Fig.13 A schematic partial structural diagram of a display device provided in an embodiment of the present application.

[0050] The reference numerals in the figure represent respectively:

[0051] 100, display area; 110, shadow area; 120, transfer area; 121, via; 200, non-display area; 210, bending area; 220, binding area; 221, binding pin; 230, power signal routing area; 231, first power signal routing area; 232, second power signal routing area; 240, scan drive routing area; 250, data drive routing area; 300, substrate layer; 400, drive layer; 500, touch electrode layer; 501, touch electrode; 502, touch signal routing area; 510, first touch electrode layer; 520, second touch electrode layer; 530, touch signal line; 600, protective layer; 700, first organic layer; 800, first inorganic layer; 900, second inorganic layer; 1000, third inorganic layer; 1100, first groove. DETAILED DESCRIPTION

[0052] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0053] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0054] For example, Figure 1 A schematic partial cross-sectional view of a display panel provided in an embodiment of the present application, Figure 2 A schematic partial top view of a non-display area of ​​a display panel provided in an embodiment of the present application, Figure 3 A schematic partial top view of a non-display area of ​​a display panel provided in an embodiment of the present application. Figure 1 and Figure 2The display panel may include a display area 100 and a non-display area 200. The portion of the display panel corresponding to the non-display area 200 may be bent. A plurality of vias 121 are provided between the bending area 210 and the display area 100. The signal line in the touch electrode layer 500 may be connected to other electrode layers through one of the vias 121. Other electrode layers, such as the source-drain electrode layer in the driving layer 400, are provided in different layers from the touch electrode layer 500. The source-drain electrode layer is provided between the touch electrode layer 500 and the substrate layer 300. The same signal line in the touch electrode layer 500 is also connected to a binding pin through one of the vias 121. The binding pin is located in the binding area 220. The bending area 210 is provided between the binding area 220 and the display area 100.

[0055] refer to Figure 2 and Figure 3 , the touch electrode layer can be made of metal, and the touch electrode layer is relatively close to the display side surface of the display panel, and a touch signal line is arranged on the touch electrode layer to form a touch signal routing area 502. When the touch signal routing area 502 overlaps with the bending area 210 in the non-display area 200, the touch signal line is far away from the bending center, so that the touch signal line is prone to stress concentration during the bending process, and the touch signal line is easily damaged under the stress, resulting in the influence of touch signal transmission, causing the display panel to display poorly. Therefore, the touch signal line in the touch electrode layer can be transferred to other electrode layers of different layers through the multiple vias 121 in the transfer area 120, for example, through the vias, it is connected to the source and drain electrode layer, the source and drain electrode layer is below the touch electrode layer, and under the protection of the upper film layer for the source and drain electrode layer, the source and drain electrode layer is not prone to stress concentration, and at the same time, the touch signal line is prevented from being subjected to the bending force by the transfer method, so as to avoid the above-mentioned signal line being damaged due to bending, and then the phenomenon of being unable to transmit signals occurs.

[0056] Exemplary, reference Figure 1 and Figure 2The inorganic layer in the encapsulation layer of the display panel can be formed by chemical vapor deposition (CVD). In the CVD process, the edge of the inorganic encapsulation film layer is easy to diffuse, thereby forming a shadow area 110, that is, a shadow area. The shadow area will increase the projection size of the edge of the film layer on the substrate layer. In the etching process of the via 121, the increase in the size of the inorganic encapsulation film layer will increase the thickness of the inorganic encapsulation film layer, while the etching depth of the via 121 is difficult to increase, resulting in the via 121 being set in the shadow area 110. It is difficult for the via 121 to penetrate the inorganic encapsulation film layer, that is, it is difficult for the touch signal line to be transferred to other film layers through the via 121, and the touch signal is difficult to be transmitted to the binding area 220 through the touch signal line, affecting the touch function of the display panel. Therefore, in order to ensure that the via 121 for transferring the touch signal can be etched, the via 121 corresponding to the touch signal line cannot be covered by the inorganic packaging film layer, and the via 121 in the non-display area 200 is as far away from the edge of the shadow area as possible to avoid the shadow area affecting the connection effect between the via and the touch signal line. The via 121 needs to have a certain distance from the edge of the shadow area 110 to realize the touch function of the display panel, but at the same time it will make it difficult to further compress the frame size, thereby making it difficult to achieve a narrow frame of the display panel.

[0057] Exemplary, reference Figure 2 The width of the shadow area 110 in the CVD process is above 100 μm, and the distance from the via 121 to the boundary of the CVD film layer must be greater than the width of the shadow area to ensure that the etching of the via 121 will not be affected by the CVD inorganic layer.

[0058] Figure 4 A schematic partial cross-sectional view of a display panel provided in an embodiment of the present application, see Figure 4 , a display panel is provided, comprising: a substrate layer 300, a driving layer 400 and at least two touch electrode layers 500. The driving layer 400 is arranged on one side of the substrate layer 300, and the at least two touch electrode layers 500 are arranged on a side of the driving layer 400 away from the substrate layer 300. Touch electrodes are arranged in the touch electrode layer 500, and capacitance can be formed between adjacent touch electrodes by touching, and touch signals are transmitted through the touch electrode layer 500 to realize the touch function of the display panel.

[0059] Exemplarily, the substrate layer may include a flexible substrate or a hard substrate, the flexible substrate may include polyimide, and the hard substrate may be made of glass. The driving layer may include a pixel driving circuit, and the light-emitting device may be arranged on a side of the driving layer away from the substrate layer. The pixel defining layer may be used to define the pixel boundary, thereby avoiding color mixing between pixels and improving the display effect.

[0060] Exemplarily, the pixel driving circuit may include a 2T1C circuit structure, a 7T1C circuit structure, an 8T1C circuit structure or a 9T1C circuit structure, where 2T1C is a circuit structure of two TFTs (thin film transistors) and one capacitor. Similarly, 7T1C is a circuit structure of seven TFTs and one capacitor, and so on. No further details are given.

[0061] In some examples, reference Figure 4 , the substrate layer 300 may include a display area 100 and a non-display area 200, the non-display area 200 includes a bending area 210, and the display panel corresponding to the bending area 210 can be used to be bent to bend part of the display panel of the non-display area 200 to the back side of the display area 100 to reduce the frame of the display panel. A touch signal line is arranged in the non-display area 200, and the touch signal line and at least one layer of the touch electrode layer 500 are arranged in the same layer, and the touch signal line is electrically connected to the touch electrode in the touch electrode layer 500. The entire touch signal line can cross the bending area 210 to connect the touch electrode and the binding pin in the binding area. At the same time, the touch signal line corresponding to the bending area 210 can be bent as the display panel is bent.

[0062] In some examples, reference Figure 4 , the bending area 210 is provided with a protective layer 600, and the protective layer 600 is provided on the side of the touch signal line away from the substrate layer 300. The material hardness of the protective layer 600 is less than the material hardness of the touch signal line, that is, the protective layer 600 is softer than the touch signal line, and the protective layer 600 can provide better stress buffering and stress protection for the touch signal line. The soft protective layer 600 is easier to bend than the touch signal line. During the bending process of the display panel, the protective layer 600 can bear part of the bending stress and play a role in buffering stress, so as to reduce the bending stress on the touch signal line and avoid the touch signal line from being damaged due to bending. At the same time, the protective layer 600 has a certain thickness in the thickness direction of the substrate layer 300, and the protective layer 600 can also play a role in protecting the touch signal line below.

[0063] Illustratively, the protective layer may be a film layer made of organic material.

[0064] Figure 5 An exemplary top view of another display panel provided in an embodiment of the present application. In some examples, reference Figure 5 The non-display area 200 may partially surround the display area 100 , for example, the non-display area 200 may surround the side edges and the bottom edges of the display area 100 , or the non-display area 200 may completely surround the display area 100 .

[0065] In some examples, the non-display area 200 also includes a binding area 220, the bending area 210 is located between the display area 100 and the binding area 220, a binding pin 221 is provided in the binding area 220, and the touch signal line 530 is electrically connected to the touch electrode layer 500 of the display area 100 and the binding pin 221 of the binding area 220, respectively.

[0066] Exemplarily, the binding pins are used to bind and connect the driver chip or the flexible circuit board. If the flexible circuit board is bound, the flexible circuit board may include the driver chip.

[0067] Figure 6 A schematic partial top view of a non-display area of ​​another display panel provided in an embodiment of the present application. Figure 6 , part of the non-display area 200 is the routing area of ​​the signal line. For example, the touch electrode layer 500 provided with the touch signal line can be routed to the bottom edge of the display panel through the non-display area on the side of the display area 100. The entire touch signal line 530 can be arranged in the same layer as the touch electrode layer, so that the touch signal line 530 crosses part of the bending area 210. The touch signal line 530 can connect the touch electrode 501 in the display area and the binding area 220. The binding area 220 is arranged on the side of the bending area 210 away from the display area 100. At the same time, the display panel corresponding to the bending area 210 is bent, driving the touch signal line 530 to bend. Since no vias are provided, the bending area 210 can be arranged closer to the display area 100 to achieve a narrow frame of the display panel.

[0068] In the present application, there is no need to set vias in the non-display area, and the touch signal line in the touch electrode layer can directly cross the bending area of ​​the non-display area, that is, the touch signal line can be set in the same layer as the touch electrode layer, and the touch signal line can cover the bending area without being transferred to other film layers through vias, so as to realize the transmission of touch signals in the bending area through other film layers. The distance between the bending area and the shadow area has no effect on the transmission of the touch signal, making the distance between the bending area and the shadow area more controllable. Based on different materials, different parameters can be set for the distance between the bending area and the shadow area, that is, by saving the area space for setting vias, the bending area can be closer to the shadow area, and the touch signal line can be bent earlier, thereby reducing the frame and realizing a narrow frame of the display panel.

[0069] The protective layer of the present application is arranged on the outside of the touch electrode layer. The protective layer is softer than the touch signal line. The protective layer can provide better stress buffering and stress protection for the touch signal line to reduce the bending stress on the touch signal line, thereby protecting the touch signal line below.

[0070] In some examples, the bending area may overlap with the shadow area, that is, the edge of the shadow area may be the edge of the bending area, so that the touch signal line is bent earlier to reduce the size of the routing area of ​​the non-display area and further narrow the border of the display panel.

[0071] Figure 7 A schematic partial top view of a display panel provided in an embodiment of the present application. In some examples, reference Figure 7 The bending area 210 includes a power signal routing area 230, in which a power signal line is arranged, and the power signal line is arranged on the driving layer. The orthographic projection of the touch signal line 530 on the substrate layer overlaps with the orthographic projection of the power signal routing area 230 on the substrate layer. The signal transmitted by the power signal line is a large DC signal, which can shield the signal interference of the alternating signal, thereby isolating the touch signal line 530 from the alternating signal line through the power signal line to avoid the interference of the alternating signal on the touch signal.

[0072] Exemplarily, the power signal line can transmit a constant voltage signal, such as a low-level signal or a high-level signal. The constant voltage signal is a DC signal, and the current of the signal is relatively large, so that the adjacent alternating signal can be shielded. The touch signal line is arranged in the power signal routing area, so that at least part of the touch signal line can be arranged on the side of the power signal line away from the substrate layer, so that the touch signal line can be protected by the power signal line, and other alternating signals can be shielded, so as to avoid the alternating signal from interfering with the touch signal line and affecting the transmission of the touch signal.

[0073] In some examples, reference Figure 7 The power signal routing area 230 includes a first power signal routing area 231 and a second power signal routing area 232. The first power signal routing area 231 in the non-display area may not overlap with the second power signal routing area 232. The power signal line includes a first power signal line and a second power signal line. The first power signal line may be arranged in the first power signal routing area 231, and the second power signal line may be arranged in the second power signal routing area 232. The two power signal lines may transmit different signals. The first power signal transmitted by the first power signal line may be greater than the second power signal transmitted by the second power signal line. For example, the first power signal may be an anode signal, and the anode signal may be a high-level signal. The second power signal may be a cathode signal, and the cathode signal may be a low-level signal. The orthographic projection of the first power signal line on the substrate layer does not overlap with the orthographic projection of the second power signal line on the substrate layer, so as to increase the distance between the two power signal lines 230 and improve the shielding effect of the power signal line on the alternating signal.

[0074] Exemplarily, the first power signal line and the second power signal line can respectively transmit different DC signals, the first power signal line can be set in the first power signal routing area, the second power signal line can be set in the second power signal routing area, the first power signal routing area and the second power signal routing area can be spaced apart, and the area between adjacent first power signal lines and second power signal lines can be set with an alternating signal line or a touch signal line.

[0075] In some examples, reference Figure 7 The orthographic projection of the touch signal line 530 on the substrate layer overlaps with the orthographic projection of the first power signal wiring area 231 on the substrate layer. For example, the touch signal line 530 can be arranged above the power signal wiring area, and the first power signal line is arranged in the first power signal wiring area 231. The first power signal line can provide a better signal shielding effect. At the same time, the touch signal line 530 is arranged corresponding to the projection area of ​​the first power signal line, which can better avoid being affected by the alternating signal.

[0076] In some examples, reference Figure 7 The power signal routing area 230 can be symmetrically arranged with reference to one of the center lines of the display panel, and the first power signal routing area 231 can be arranged on the outside of the second power signal routing area 232. For example, the first power signal routing area 231 is arranged in the side and bottom edge areas of the display panel, and the second power signal routing area 232 is arranged in the bottom center area of ​​the display panel.

[0077] Figure 8 A schematic partial top view of another display panel provided in an embodiment of the present application. In some examples, reference Figure 8 The orthographic projection of the touch signal line 530 on the substrate layer overlaps with the orthographic projection of the second power signal wiring area 232 on the substrate layer, and the second power signal line is arranged in the second power signal wiring area 232. The touch signal line 530 can be arranged on the side of the second power signal line away from the substrate layer, and the second power signal line can provide a large current DC signal, and the second power signal line can play a role in shielding the touch signal line 530 and other alternating signals.

[0078] In some examples, the orthographic projection of the touch signal line on the substrate layer overlaps with the orthographic projection of the first power signal line and the second power signal line on the substrate layer. The touch signal line can be arranged corresponding to the projection area of ​​the first power signal line and the second power signal line respectively to avoid signal interference between adjacent alternating signal lines.

[0079] In some examples, reference Figure 7 and Figure 8The bending area 210 includes a scanning area routing area 240 and a data driving routing area 250. The scanning driving routing area 240 is provided with a scanning driving signal line, and the data driving routing area 250 is provided with a data driving signal line. The scanning driving signal line and the data driving signal line can be alternating signal lines. The orthographic projection of the touch signal line 530 on the substrate layer does not overlap with the orthographic projection of the scanning driving signal line on the substrate layer, and the orthographic projection of the touch signal line 530 on the substrate layer does not overlap with the orthographic projection of the data driving signal line on the substrate layer, that is, there is a spacing between the touch signal line 530 and the scanning driving signal line, and there is a spacing between the touch signal line 530 and the data driving signal line, and the scanning driving signal line and the data driving signal line have lower signal interference capabilities on the touch signal line 530.

[0080] Exemplarily, the touch signal lines may be arranged corresponding to the power signal lines, the data drive signal lines may be arranged between adjacent touch signal lines, and the scan drive signal lines may also be arranged between adjacent touch signal lines.

[0081] In some examples, reference Figure 8 A plurality of data driving wiring regions 250 are provided. In the bending region 210 , the orthographic projection of a portion of the power signal lines on the substrate layer is located between adjacent data driving wiring regions 250 .

[0082] In some examples, reference Figure 8 A power signal line may be provided between adjacent data drive signal lines.

[0083] In some examples, reference Figure 8 There are multiple data drive wiring areas 250. In the bending area 210, the positive projection of part of the power signal line on the substrate layer is located between adjacent data drive wiring areas. Power signal lines can be arranged between adjacent data drive signal lines, that is, AC signal lines and DC signal lines are arranged at intervals. Adjacent AC signal lines can be separated by DC signal lines, and touch signal lines 530 between adjacent data drive signal lines can be protected by DC signal lines, that is, power signal lines.

[0084] In some examples, reference Figure 8 The orthographic projection of the power signal line on the substrate layer does not overlap with the orthographic projection of the data drive signal line on the substrate layer. Part of the power signal line is located between the data drive wiring area 250 and the scan drive wiring area 240, that is, the data drive signal line and the scan drive signal line can be spaced apart. The power signal line is arranged in the spacer area to isolate the alternating signal.

[0085] In some examples, reference Figure 8The scan drive wiring area 240 can be symmetrically arranged with reference to one of the center lines of the non-display area, and the data drive wiring area 250 can also be symmetrically arranged with reference to one of the center lines of the non-display area. The scan drive wiring area 240 can be arranged outside the data drive wiring area 250. The scan drive wiring area 240 can be symmetrically arranged based on the data drive wiring area 250. Part of the power signal wiring area 230 is arranged between the scan drive wiring area 240 and the data drive wiring area 250, and the power signal wiring area 230 can be symmetrically arranged based on the data drive wiring area 250.

[0086] In some examples, the scan drive signal line can pass from the side or top edge of the display panel to the bottom edge of the display panel and be connected to the binding area, and the data drive signal line can pass from the side or top edge of the display panel through the bottom edge of the display panel and be connected to the binding area to complete the transmission of the scan drive signal and the data drive signal.

[0087] In some examples, reference Figure 8 The second power signal routing area 232 is arranged on the outside of the first power signal routing area 231, the scan drive routing area 240 and the data drive routing area 250 can be each provided with two groups, the scan drive routing area 240 can be arranged on the side of the second power signal routing area 232 away from the first power signal routing area 231, and the data drive routing area 250 can be arranged between adjacent power signal routing areas 230.

[0088] In some examples, the first power signal line may be a VSS signal line for transmitting a VSS signal.

[0089] In some examples, the second power signal line may be a VDD signal line for transmitting a VDD signal.

[0090] Fig. 9 A schematic partial cross-sectional view of another display panel provided in an embodiment of the present application. In some examples, reference Fig. 9 , at least two touch electrode layers include a first touch electrode layer and a second touch electrode layer, the first touch electrode layer is arranged between the driving layer 400 and the second touch electrode layer, and the touch signal line 530 can be arranged in a single layer, for example, the touch signal line 530 can be arranged in the first touch electrode layer, or the touch signal line 530 can be arranged in the second touch electrode layer.

[0091] In some examples, reference Fig. 9The touch signal line 530 is arranged on the first touch electrode layer or the second touch electrode layer. The first organic layer 700 is arranged between the first touch electrode layer and the driving layer 400. The first touch electrode layer is arranged on the first organic layer 700. The organic layer has a certain thickness and can drive the touch signal line 530 to bend.

[0092] In some examples, reference Fig. 9 The touch signal line 530 is disposed on the first touch electrode layer, and the orthographic projection of the first organic layer 700 on the substrate layer 300 covers the orthographic projection of the touch signal line 530 on the substrate layer 300 .

[0093] Fig.10 A schematic partial cross-sectional view of a display panel provided in an embodiment of the present application. In some examples, reference Fig.10 The touch signal line 530 can be arranged in the first touch electrode layer or the second touch electrode layer. The first inorganic layer 800 is arranged between the first touch electrode layer and the first organic layer 700. The first inorganic layer 800 can prevent part of the touch signal line 530 from remaining on the first organic layer 700 during the etching process of the touch signal line 530, so that adjacent touch signal lines 530 are electrically connected through residual metal.

[0094] In some examples, reference Fig.10 A second inorganic layer 900 is arranged between the first touch electrode layer and the protective layer 600. The second inorganic layer 900 is arranged on a side of the first touch electrode layer away from the substrate layer 300. The second inorganic layer 900 can play an insulating role to avoid signal interference between the touch signal lines 530 in the first touch electrode layer and the touch signal lines 530 in the second touch electrode layer.

[0095] In some examples, when the first touch electrode layer is provided with a touch signal line, the first touch electrode layer is provided with a first hollowing out. The first hollowing out may be formed by a photolithography process. The length direction of the first hollowing out is provided along the routing direction of the touch signal line. The first hollowing out is provided between adjacent touch signal lines to reduce signal interference between adjacent touch signal lines.

[0096] In some examples, part of the touch signal lines are arranged in the second touch electrode layer, and the orthographic projection of the touch signal lines arranged in the second touch electrode layer on the substrate layer overlaps with the orthographic projection of the first hollowing out on the substrate layer. The touch signal lines in the first touch electrode layer and the second touch electrode layer can be stacked in the thickness direction of the substrate layer, and the two touch electrode layers can be insulated by a second inorganic layer.

[0097] In some examples, reference Fig.10A first organic layer 700 is disposed between the first touch electrode layer and the driving layer 400, and a first inorganic layer 800 is disposed between the first touch electrode layer and the first organic layer 700. The first inorganic layer 800 serves as an insulator to prevent the adjacent touch signal lines 530 from being electrically connected through residual metal after the etching process.

[0098] In some examples, when a first inorganic layer is disposed between the first touch electrode layer and the first organic layer, the orthographic projection of the touch signal line on the substrate layer falls within the orthographic projection of the first inorganic layer on the substrate layer to avoid the touch signal line remaining on the first organic layer.

[0099] In some examples, reference Fig.10 A first organic layer 700 is disposed between the first touch electrode layer and the driving layer 400 , and a second inorganic layer 900 is disposed between the first touch electrode layer and the protective layer 600 . The second inorganic layer 900 can play an insulating role.

[0100] In some examples, the touch signal line can be set in the first touch electrode layer. When a second inorganic layer is set between the first touch electrode layer and the protective layer, the orthographic projection of the second inorganic layer on the substrate layer covers the orthographic projection of the touch signal line on the substrate layer. The second inorganic layer can avoid signal interference between adjacent touch signal lines.

[0101] In some examples, reference Fig.10 The touch signal line 530 is arranged on the first touch electrode layer, a first organic layer 700 is arranged between the first touch electrode layer and the driving layer, a first inorganic layer 800 is arranged between the first touch electrode layer and the first organic layer 700 , and a second inorganic layer 900 is arranged between the first touch electrode layer and the protective layer 600 .

[0102] Fig.11 A schematic partial cross-sectional view of another display panel provided in an embodiment of the present application. In some examples, reference Fig.11 The touch signal line 530 can be arranged on the second touch electrode layer, and a stacked first inorganic layer 800 and a second inorganic layer 900 are arranged between the touch signal line 530 and the first organic layer 700. For example, the first touch electrode layer can be removed by an etching process, so that the first inorganic layer 800 and the second inorganic layer 900 are stacked.

[0103] Fig.12 A schematic partial cross-sectional view of another display panel provided in an embodiment of the present application. In some examples, reference Fig.12 The touch signal line may be arranged in a double layer, for example, the touch signal line is arranged in the first touch electrode layer 510 and the second touch electrode layer 520. By adopting a double-layer routing method, the routing reliability of the bending area 210 can be enhanced.

[0104] In some examples, the touch signal lines in the first touch electrode layer and the second touch electrode layer may be arranged in the same layer, and the touch signal lines in the two touch electrode layers may be alternately arranged on a plane parallel to the substrate layer.

[0105] In some examples, reference Fig.12 In the non-display area, the touch signal line is disposed in the first touch electrode layer 510 and the second touch electrode layer 520, and the second inorganic layer 900 can be disposed between the first touch electrode layer 510 and the second touch electrode layer 520 to play an insulating role.

[0106] In some examples, reference Fig.12 The driving layer 400 includes a third inorganic layer 1000, which is disposed between the substrate layer 300 and the power signal wiring area 230, and the power signal line is disposed in the power signal wiring area 230. The third inorganic layer 1000 is provided with a first groove 1100, and the notch direction of the first groove 1100 is arranged in a direction away from the substrate layer 300, and at least part of the first groove 1100 is arranged in the bending area 210. The third inorganic layer 1000 corresponding to the first groove 1100 has a smaller size in the thickness direction of the substrate layer, and the first groove 1100 is easier to bend. At the same time, the third inorganic layer 1000 is close to the center of the bending area 210, and the thinner third inorganic layer 1000 can avoid damage due to bending.

[0107] In some examples, the orthographic projection of the first groove on the substrate layer may overlap with the edge of the shadow area, so that the display panel may be bent starting from the edge of the shadow area to achieve a narrow frame of the display panel.

[0108] In some examples, the display panel includes a packaging area, the packaging area covers the display area, and there is an overlap between an edge of the packaging area and the bending area.

[0109] Fig.13 This is a schematic partial structural diagram of a display device provided in an embodiment of the present application. Fig.13 , the present application provides a schematic partial structural diagram of a display device. The display device includes a display panel in any of the above technical solutions.

[0110] The display device provided by the embodiment of the present application has a touch signal line set by the display panel directly crossing the bending area of ​​the non-display area. The touch signal line can be set in the same layer as the touch electrode layer, so that the touch signal line can cover the bending area without being transferred to other film layers through vias to realize the transmission of touch signals in the bending area through other film layers. The distance between the bending area and the shadow area has no effect on the transmission of the touch signal, making the distance between the bending area and the shadow area more controllable. Based on different materials, different parameters can be set for the distance between the bending area and the shadow area, that is, by saving the area space for setting the vias, the bending area can be closer to the shadow area, and the touch signal line can be bent earlier, thereby reducing the frame and realizing a narrow frame of the display panel.

[0111] The protective layer of the display panel is arranged on the outside of the touch electrode layer. The protective layer is softer than the touch signal line. The protective layer can provide better stress buffering and stress protection for the touch signal line to reduce the bending stress on the touch signal line, thereby protecting the touch signal line underneath.

[0112] The display device provided in the embodiment of the present application may include a television, a computer, a smart phone, a smart wearable device, a laptop computer, a tablet computer, etc. The smart wearable device may include a smart watch, an AR (augmented reality) device, a VR (virtual reality) device, etc.

[0113] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0114] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0115] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0116] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A display panel, characterized in that: include: substrate layer; A driving layer, the driving layer being arranged on one side of the substrate layer; At least two touch electrode layers, wherein the at least two touch electrode layers are arranged on a side of the driving layer away from the substrate layer, and the touch electrode layers are provided with touch electrodes; The substrate layer comprises a display area and a non-display area, wherein the non-display area at least partially surrounds the display area; The non-display area includes a bending area, and the display panel corresponding to the bending area is used for bending; The non-display area is provided with a touch signal line, the touch signal line is provided in the same layer as at least one touch electrode layer, and the touch signal line is electrically connected to the touch electrode; In a direction from the display area to the bending area, the touch signal line crosses the bending area, and the touch signal line in the bending area is used to bend along with the bending of the display panel; The bending region is provided with a protection layer, and the protection layer is provided on a side of the touch signal line away from the substrate layer. The material hardness of the protection layer is less than the material hardness of the touch signal line.

2. The display panel according to claim 1, characterized in that: The bending area includes a power signal wiring area, a power signal line is arranged in the power signal wiring area, and the power signal line is arranged in the driving layer; The orthographic projection of the touch signal line on the substrate layer overlaps with the orthographic projection of the power signal wiring area on the substrate layer.

3. The display panel according to claim 2, characterized in that: The power signal line includes a first power signal line and a second power signal line, and the first power signal transmitted by the first power signal line is greater than the second power signal transmitted by the second power signal line; The orthographic projection of the first power signal line on the substrate layer does not overlap with the orthographic projection of the second power signal line on the substrate layer, and the orthographic projection of the touch signal line on the substrate layer overlaps with the orthographic projection of the first power signal line and / or the second power signal line on the substrate layer.

4. The display panel according to claim 3, characterized in that: The bending area includes a scan drive wiring area and a data drive wiring area, the scan drive wiring area is provided with a scan drive signal line, the data drive wiring area is provided with a data drive signal line, the orthographic projection of the touch signal line on the substrate layer does not overlap with the orthographic projection of the scan drive signal line on the substrate layer, and the orthographic projection of the touch signal line on the substrate layer does not overlap with the orthographic projection of the data drive signal line on the substrate layer.

5. The display panel according to claim 4, characterized in that: A plurality of data drive wiring regions are provided, some of the power signal lines are located between adjacent data drive wiring regions, and / or the power signal lines are provided between adjacent data drive signal lines.

6. The display panel according to claim 4, characterized in that: The orthographic projection of the power signal line on the substrate layer does not overlap with the orthographic projection of the data drive signal line on the substrate layer; Part of the power signal lines is located between the data drive wiring area and the scan drive wiring area.

7. The display panel according to claim 1, characterized in that: The non-display area further includes a binding area, the bending area is located between the display area and the binding area, binding pins are arranged in the binding area, and the touch signal lines are electrically connected to the touch electrodes of the display area and the binding pins respectively.

8. The display panel according to claim 2, characterized in that: The at least two touch electrode layers include a first touch electrode layer and a second touch electrode layer, the first touch electrode layer is arranged between the drive layer and the second touch electrode layer, a first organic layer is arranged between the first touch electrode layer and the drive layer; and / or a first inorganic layer is arranged between the first touch electrode layer and the first organic layer; and / or a second inorganic layer is arranged between the first touch electrode layer and the protective layer; The touch signal line is arranged on the first touch electrode layer and / or the second touch electrode layer, and the orthographic projection of the first organic layer on the substrate layer covers the orthographic projection of the touch signal line on the substrate layer.

9. The display panel according to claim 8, characterized in that: When the first touch electrode layer is provided with the touch signal lines, the first touch electrode layer is provided with first hollows, the length direction of the first hollows is arranged along the routing direction of the touch signal lines, and the first hollows are arranged between adjacent touch signal lines.

10. The display panel according to claim 9, characterized in that: The touch signal line is arranged on the second touch electrode layer; The orthographic projection of the touch signal line disposed on the second touch electrode layer on the substrate layer overlaps with the orthographic projection of the first hollowing out on the substrate layer.

11. The display panel according to claim 8, characterized in that: In the case where a first inorganic layer is disposed between the first touch electrode layer and the first organic layer, the orthographic projection of the touch signal line on the substrate layer falls within the orthographic projection of the first inorganic layer on the substrate layer.

12. The display panel according to claim 8, characterized in that: In the case where a second inorganic layer is disposed between the first touch electrode layer and the protection layer, an orthographic projection of the second inorganic layer on the substrate layer covers an orthographic projection of the touch signal line on the substrate layer.

13. The display panel according to claim 8, characterized in that: The driving layer includes a third inorganic layer, and the third inorganic layer is arranged between the substrate layer and the power signal line; The third inorganic layer is provided with a first groove, the notch of the first groove is arranged in a direction away from the substrate layer, and at least a part of the first groove is arranged in the bending area.

14. The display panel according to claim 1, characterized in that: The display panel includes a packaging area, the packaging area covers the display area, and an edge of the packaging area overlaps with the bending area.

15. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 14.

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