Display panel and display device

Abstract

The invention discloses a display panel and a display device, and belongs to the technical field of display. The display panel is provided with a display area and a non-display area located on the periphery of the display area, and the non-display area is provided with a bending area. The display panel comprises a driving backboard, a light-emitting device, a packaging layer, a touch layer and a plurality of touch leads. The driving backboard comprises a substrate and at least one inorganic insulating layer located on one side of the substrate. In order to reduce the probability that stress in the inorganic insulating layer is transmitted to the touch lead, a stress release area is arranged on the side, facing the bending area, of the inorganic insulating layer, and the orthographic projection of the stress release area on the substrate is overlapped with the orthographic projection of the touch lead on the substrate. The side, facing the bending area, of the inorganic insulating layer releases the stress in the inorganic insulating layer through the stress release area, the risk that the touch lead is broken is effectively reduced, the possibility that the touch function of the display panel fails is further reduced, and it is guaranteed that the reliability of the display panel is high.

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] Organic Light Emitting Diode (OLED) display panels are hailed as the next generation of display devices due to their advantages such as self-luminescence, high efficiency, bright colors, light weight, power saving and rollability, and have attracted increasing attention in recent years.

[0003] The display panel has a display area and a non-display area located outside the display area. A touch layer is distributed in the display area, and a plurality of touch metal traces are distributed in the non-display area, and the non-display area of ​​the display panel is connected to a driver chip and a flexible circuit board. The touch signal of the touch layer can be transmitted to the flexible circuit board through the touch metal traces. In order to increase the screen-to-body ratio of the display panel, it is necessary to bend the non-display area of ​​the display panel so as to bend the driver chip and the flexible circuit board to the side of the display panel opposite to the display surface.

[0004] However, the non-display area also has an inorganic layer. Although the inorganic layer is not distributed in the bending area of ​​the non-display area, the inorganic layer is also affected by the bending stress. The stress inside the inorganic layer may be transmitted to the touch metal wiring located above the inorganic layer, causing the touch metal wiring to break, affecting the touch function of the display panel. Summary of the invention

[0005] The embodiments of the present application provide a display panel and a display device, which can solve the problem of failure of touch function of OLED display panels in the prior art. The technical solution is as follows:

[0006] In one aspect, a display panel is provided, the display panel having a display area and a non-display area located outside the display area, the non-display area having a bending area; the display panel comprises: a driving backplane, a light-emitting device, a packaging layer, a touch layer and a plurality of touch leads;

[0007] The driving backplane comprises: a substrate, and at least one inorganic insulating layer located on one side of the substrate;

[0008] There are multiple light-emitting devices, and the multiple light-emitting devices are distributed on the same side of the driving backplane, and the multiple light-emitting devices are located in the display area;

[0009] The encapsulation layer is located on a side of the plurality of light-emitting devices away from the driving backplane;

[0010] The touch layer is located on a side of the driving backplane away from the encapsulation layer, and the touch layer is at least distributed in the display area;

[0011] The plurality of touch leads are all electrically connected to the touch layer, and the touch leads are located in the non-display area;

[0012] The at least one inorganic insulating layer has a stress release region on a side facing the bending region, and an orthographic projection of the stress release region on the substrate overlaps with an orthographic projection of the touch lead on the substrate.

[0013] Optionally, for any one of the at least one inorganic insulating layer, the inorganic insulating layer has avoidance grooves distributed in the stress release area.

[0014] Optionally, an orthographic projection of the touch lead on the substrate does not overlap with an orthographic projection of the inorganic insulating layer on the substrate.

[0015] Optionally, the at least one inorganic insulating layer has a plurality of through holes arranged in an array and distributed in the stress release area.

[0016] Optionally, the driving backplane includes two layers of the inorganic insulating layers stacked together, and the two layers of the inorganic insulating layers are respectively: a first inorganic insulating layer and a second inorganic insulating layer;

[0017] The plurality of through holes include: a plurality of first through holes for penetrating the first inorganic insulating layer, and a plurality of second through holes for penetrating the second inorganic insulating layer.

[0018] Optionally, an orthographic projection of the first through hole on the substrate does not overlap with an orthographic projection of the second through hole on the substrate.

[0019] Optionally, for any one of the at least one inorganic insulating layer, the inorganic insulating layer has a plurality of edge grooves distributed in the stress release region, and the plurality of edge grooves are arranged in a row at edge positions of the inorganic insulating layer toward the bending region.

[0020] Optionally, the edge groove has an arc-shaped groove surface and an opening surface that are arranged opposite to each other, and the opening surface is located on the side of the inorganic insulating layer facing the bending area.

[0021] Optionally, the touch lead includes: a first lead portion and a second lead portion; one end of the first lead portion is electrically connected to the touch layer, and the second lead portion is connected to an end of the first lead portion away from the touch layer;

[0022] Wherein, at least a portion of the second lead portion is located in the bending area.

[0023] In another aspect, a display device is provided, comprising:

[0024] A driving chip and a display panel, wherein the display panel is any one of the display panels described above, and the driving chip is used to apply a driving signal to the display panel.

[0025] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0026] A display panel includes: a driving backplane, a light-emitting device, an encapsulation layer, a touch layer and a plurality of touch leads. The driving backplane includes a substrate and at least one inorganic insulating layer located on one side of the substrate. In order to reduce the probability of the stress inside the inorganic insulating layer being transferred to the touch leads, a stress release area is provided on the side of the inorganic insulating layer facing the bending area, and the orthographic projection of the stress release area on the substrate overlaps with the orthographic projection of the touch leads on the substrate. The stress inside the inorganic insulating layer is released through the stress release area on the side of the inorganic insulating layer facing the bending area, so that the probability of the stress inside the inorganic insulating layer being transferred to the touch leads is low, thereby reducing the risk of the touch leads being broken, and further reducing the possibility of failure of the touch function of the display panel, so as to ensure the high reliability of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a schematic diagram of a partial structure of a display panel provided in an embodiment of the present application;

[0029] Figure 2 yes Figure 1 Schematic diagram of the film structure at A-A';

[0030] Figure 3 yes Figure 1 A schematic diagram of a membrane layer structure at B-B';

[0031] Figure 4 yes Figure 1 Schematic diagram of another film layer structure at B-B';

[0032] Figure 5 yes Figure 1 Schematic diagram of another film layer structure at BB';

[0033] Figure 6 yes Figure 1 A schematic diagram of another film layer structure at BB';

[0034] Figure 7 is a partial top view of an inorganic insulating layer provided in an embodiment of the present application;

[0035] Figure 8 It is a schematic diagram of a local film layer structure of a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0037] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 is a partial structural diagram of a display panel provided in an embodiment of the present application, Figure 2 yes Figure 1 Schematic diagram of the film structure at A-A', Figure 3 yes Figure 1 A schematic diagram of a film layer structure at BB'. The display panel 000 may include: a driving backplane 100, a light-emitting device 200, an encapsulation layer 300, a touch layer 400 and a plurality of touch leads 500. The display panel has a display area 00a, and a non-display area 00b located outside the display area 00a, and the non-display area 00b has a bending area 00c. Here, the display panel 000 can be bent through the bending area 00c, so that the portion of the non-display area 00b located on the side of the bending area 00c away from the display area 00a can be bent to the back of the display area 00a.

[0038] The driving backplane 100 in the display panel 000 includes: a substrate 110, and at least one inorganic insulating layer 120 located on one side of the substrate 110. The orthographic projection of the at least one inorganic insulating layer 120 on the substrate 110 does not overlap with the orthographic projection of the bending area 00c on the substrate 110, so as to ensure that the inorganic insulating layer 120 does not affect the bending of the bending area 00c.

[0039] There are multiple light-emitting devices 200 in the display panel 000, and the multiple light-emitting devices 200 are distributed on the same side of the driving backplane 100, and the multiple light-emitting devices 200 are located in the display area 00a. The multiple light-emitting devices 200 can be electrically connected to the driving backplane 100, and the driving backplane 100 can drive the multiple light-emitting devices 200 to emit light, so that the display panel 000 can display the corresponding picture.

[0040] The encapsulation layer 300 in the display panel 000 is located on the side of the plurality of light emitting devices 200 away from the driving backplane 100. Here, the encapsulation layer 300 can be used to encapsulate the light emitting devices 200 to prevent water and oxygen in the external environment from corroding the light emitting layer in the light emitting devices 200, thereby increasing the service life of the light emitting devices 200.

[0041] The touch layer 400 in the display panel 000 is located on the side of the driving backplane 100 away from the encapsulation layer 300, and the touch layer 400 is at least distributed in the display area 00a. Here, the touch layer 400 usually includes two touch metal layers. In order to ensure that the touch metal layer does not block the light emitted by the light-emitting device 200, the orthographic projection of the touch metal layer on the driving backplane 100 and the orthographic projection of the light-emitting device 200 on the driving backplane 100 can be made not to overlap. Even if the material of the two touch metal layers is an opaque metal material, it can also ensure that the display panel 000 can display the picture normally.

[0042] The plurality of touch leads 500 in the display panel 000 are electrically connected to the touch layer 400, and the touch leads 500 are located in the non-display area 00b. Here, after the flexible circuit board is subsequently bound to the non-display area 00b of the display panel 000, the flexible circuit board can be connected to the touch leads 500, so that the touch layer 400 in the display panel 000 can realize the touch function under the control of the flexible circuit board.

[0043] It should also be noted that after the bending area 00c in the display panel 000 is bent, the inorganic insulating layer 120 in the driving backplane 100 will not be distributed in the bending area 00c, so that the inorganic insulating layer 120 will not be bent along with the bending area 00c. In this way, although it can be ensured that there will be no problem of excessive stress concentration in the bending area 00c, the inorganic material used in the inorganic insulating layer 120 is a brittle material, and stress exists inside the inorganic insulating layer 120 on the side close to the bending area 00c. And the closer the inorganic insulating layer 120 is to the side of the bending area 00c, the greater the stress in the inorganic insulating layer 120. Figure 3 As shown, the stress inside the inorganic insulating layer 120 near the bending region 100c will be transmitted in a direction away from the substrate 110 and may eventually be transmitted to the touch lead 500, causing the touch lead 500 to break.

[0044] To this end, the embodiment of the present application provides an improvement to the inorganic insulating layer 120 to improve the problem of the touch lead 500 being broken due to the internal stress. For example, Figure 4 As shown, Figure 4 yes Figure 1Another schematic diagram of the film structure at BB'. At least one inorganic insulating layer 120 in the driving backplane 100 has a stress release region R on one side facing the bending region 00c. The orthographic projection of the stress release region R on the substrate 110 can overlap with the orthographic projection of the touch lead 500 on the substrate 110.

[0045] In this case, after the bending area 00c in the display panel 000 is bent, the side of the inorganic insulating layer 120 facing the bending area 00c can release the stress inside the inorganic insulating layer 120 through the stress release area R, so that the probability of the stress inside the inorganic insulating layer 120 being transmitted to the touch lead 500 is low, which can effectively reduce the risk of the touch lead 500 breaking, and further reduce the possibility of failure of the touch function of the display panel 000, so as to ensure the high reliability of the display panel 000.

[0046] In summary, the display panel provided in the embodiment of the present application has a display area and a non-display area located outside the display area, and the non-display area has a bending area. The display panel includes: a driving backplane, a light-emitting device, an encapsulation layer, a touch layer and a plurality of touch leads. Among them, the driving backplane includes a substrate, and at least one inorganic insulating layer located on one side of the substrate. In order to reduce the probability of the stress inside the inorganic insulating layer being transferred to the touch leads, a stress release area is set on the side of the inorganic insulating layer facing the bending area, and the orthographic projection of the stress release area on the substrate overlaps with the orthographic projection of the touch leads on the substrate. The side of the inorganic insulating layer facing the bending area releases the stress inside the inorganic insulating layer through the stress release area, so that the probability of the stress inside the inorganic insulating layer being transferred to the touch leads is low, which effectively reduces the risk of the touch leads being broken, and thereby reduces the possibility of failure of the touch function of the display panel, so as to ensure that the reliability of the display panel is high.

[0047] In the embodiment of the present application, the stress release region R in the at least one inorganic insulating layer 120 has a variety of possible design methods. The following three design methods are used as examples for illustration:

[0048] The first design method, such as Figure 5 As shown, Figure 5 yes Figure 1Schematic diagram of another film layer structure at BB'. For any one of the at least one inorganic insulating layer 120, the inorganic insulating layer 120 has an avoidance groove U distributed in the stress release area R. That is, by allowing the inorganic insulating layer 120 to shrink toward the side of the bending area 00c, the distance between the side of the inorganic insulating layer 120 facing the bending area 00c and the bending area 00c is increased. In this way, after the bending area 00c in the display panel 000 is bent, the stress on the side of the inorganic insulating layer 120 facing the bending area 00c is small, thereby effectively reducing the risk of the touch lead 500 being broken.

[0049] In the present application, after the avoidance groove U is provided on the side of the inorganic insulating layer 120 facing the bending area 00c, at least part of the orthographic projection of the touch lead 500 on the substrate 110 may be located within the orthographic projection of the avoidance groove U on the substrate 110. In this way, the orthographic projection of the touch lead 500 on the substrate 110 may not overlap with the orthographic projection of the inorganic insulating layer 120 on the substrate 110. Therefore, after the bending area 00c in the display panel 000 is bent, even if there is still some stress on the side of the inorganic insulating layer 120 facing the bending area 00c, this stress will not cause the touch lead 500 to break.

[0050] For example, Figure 5 As shown, the driving backplane 100 may include two inorganic insulating layers 120 . The two inorganic insulating layers 120 are respectively a first inorganic insulating layer 121 and a second inorganic insulating layer 122 , and the first inorganic insulating layer 121 is closer to the substrate 110 than the second inorganic insulating layer 122 .

[0051] Among them, the first inorganic insulating layer 121 has a first avoidance groove U1 distributed in the stress release area R, and the second inorganic insulating layer 122 has a second avoidance groove U2 distributed in the stress release area R. That is, by allowing the first inorganic insulating layer 121 to shrink on one side of the bending area 00c and the second inorganic insulating layer 122 to shrink on one side of the bending area 00c, the distance between the first inorganic insulating layer 121 and the bending area 00c is increased, and the distance between the second inorganic insulating layer 122 and the bending area 00c is increased. In this way, after the bending area 00c in the display panel 000 is bent, the stress on the first inorganic insulating layer 121 and the second inorganic insulating layer 122 is small, thereby effectively reducing the risk of the touch lead 500 being broken.

[0052] It should be noted that the side of the first avoidance groove U1 away from the bending area 00c and the side of the second avoidance groove U2 away from the bending area 00c can both protrude from the end of the touch lead 500 away from the bending area 00c. In this case, the orthographic projection of the end of the touch lead 500 away from the bending area 00c on the substrate 110 can be located within the orthographic projection of the first avoidance groove U1 on the substrate 110, and can be located within the orthographic projection of the second avoidance groove U2 on the substrate 110. In this way, it can be ensured that the orthographic projection of the touch lead 500 on the substrate 110 does not overlap with the orthographic projection of the first inorganic insulating layer 121 on the substrate 110, and it can be ensured that it does not overlap with the orthographic projection of the second inorganic insulating layer 122 on the substrate 110. To this end, after the bending area 00c in the display panel 000 is bent, even if there is still some stress on the side of the first inorganic insulating layer 121 facing the bending area 00c and the side of the second inorganic insulating layer 122 facing the bending area 00c, this stress will not cause the touch lead 500 to break, thereby reducing the possibility of failure of the touch function of the display panel, thereby ensuring the high reliability of the display panel 000.

[0053] For the second design method, please refer to Figure 6 , Figure 6 yes Figure 1 Another schematic diagram of the film layer structure at BB'. At least one inorganic insulating layer 120 in the driving backplane 100 has a plurality of through holes G arranged in an array and distributed in the stress release area R. In this case, by providing a plurality of through holes G in the stress release area R, the hardness of the portion of the inorganic insulating layer 120 located in the stress release area R can be effectively reduced, so that the portion of the inorganic insulating layer 120 located in the stress release area R is relatively soft. In this way, after the bending area 00c in the display panel 000 is bent, the stress on the side of the inorganic insulating layer 120 facing the bending area 00c is relatively small, thereby effectively reducing the risk of the touch lead 500 being broken.

[0054] Exemplarily, the driving backplane 100 may include two inorganic insulating layers 120. The two inorganic insulating layers 120 are respectively: a first inorganic insulating layer 121 and a second inorganic insulating layer 122, and the first inorganic insulating layer 121 is closer to the substrate 110 than the second inorganic insulating layer 122. The plurality of through holes G include: a plurality of first through holes G1 for penetrating the first inorganic insulating layer 121, and a plurality of second through holes G2 for penetrating the second inorganic insulating layer 122.

[0055] In this case, by providing a plurality of first through holes G1 arranged in an array, the portion of the first inorganic insulating layer 121 located in the stress release region R can be made relatively soft, thereby reducing the stress in the portion of the first inorganic insulating layer 121 located in the stress release region R. Similarly, by providing a plurality of second through holes G2 arranged in an array, the portion of the second inorganic insulating layer 122 located in the stress release region R can be made relatively soft, thereby reducing the stress in the portion of the second inorganic insulating layer 122 located in the stress release region R. In this way, the risk of the touch lead 500 being broken can be effectively reduced, thereby reducing the possibility of failure of the touch function of the display panel 000.

[0056] In the present application, the first through hole G1 and the second through hole G2 may be staggered, that is, the orthographic projection of the first through hole G1 on the substrate 110 may not overlap with the orthographic projection of the second through hole G2 on the substrate 100. It should be noted that, due to the limitation of the punching process, there is an upper limit on the number of through holes set in a single inorganic insulating layer 120. Therefore, by staggering the first through hole G1 set in the first inorganic insulating layer 121 and the second through hole G2 set in the second inorganic insulating layer 122, more through holes G can be formed in the stress release region R. In this way, the portion of the stacked first inorganic insulating layer 121 and the second inorganic insulating layer 122 located in the stress release region R can be made softer, and the stress existing in the portion of the stacked first inorganic insulating layer 121 and the second inorganic insulating layer 122 located in the stress release region R can be further reduced.

[0057] For the third design method, please refer to Figure 7 , Figure 7 It is a partial top view of an inorganic insulating layer provided in an embodiment of the present application. For any one of the at least one inorganic insulating layer 120, the inorganic insulating layer 120 has a plurality of edge grooves W distributed in the stress release area R, and the plurality of edge grooves W can be arranged in a row at the edge position of the inorganic insulating layer 120 toward the bending area 00c. In this case, by setting a plurality of edge grooves W in the stress release area R, and arranging the plurality of edge grooves W in a row at the edge position of the inorganic insulating layer 120 toward the bending area 00c, the inorganic insulating layer 120 can be partially retracted toward one side of the bending area 00c to increase the distance between the retracted portion of the inorganic insulating layer 120 and the bending area 00c. In addition, after setting a plurality of edge grooves W in the stress release area R, the portion of the inorganic insulating layer 120 located in the stress release area R can also be made softer. In this way, after the bending area 00 c in the display panel 000 is bent, the stress on the side of the inorganic insulating layer 120 facing the bending area 00 c is relatively small, thereby effectively reducing the risk of the touch lead 500 being broken.

[0058] Exemplarily, the driving backplane 100 may include two inorganic insulating layers 120 , which are respectively a first inorganic insulating layer 121 and a second inorganic insulating layer 122 , and the first inorganic insulating layer 121 is closer to the substrate 110 than the second inorganic insulating layer 122 .

[0059] The first inorganic insulating layer 121 has a plurality of first edge grooves W1 distributed in the stress release region R, and the plurality of first edge grooves W1 are arranged in a row at the edge position of the first inorganic insulating layer 121 toward the bending region 00c. The second inorganic insulating layer 122 has a plurality of second edge grooves W2 distributed in the stress release region R, and the plurality of second edge grooves W2 are arranged in a row at the edge position of the second inorganic insulating layer 122 toward the bending region 00c.

[0060] In this way, the first inorganic insulating layer 121 on one side of the bending area 00c and the second inorganic insulating layer 122 on the other side of the bending area 00c can be partially retracted to ensure that the distance between the retracted portion of the first inorganic insulating layer 121 and the second inorganic insulating layer 122 and the bending area 00c is relatively large. In addition, the portions of the first inorganic insulating layer 121 and the second inorganic insulating layer 122 located in the stress release area R are also relatively soft. In this way, after the bending area 00c in the display panel 000 is bent, the stress on the first inorganic insulating layer 121 on one side of the bending area 00c and the second inorganic insulating layer 122 on one side of the bending area 00c are relatively small, thereby effectively reducing the risk of the touch lead 500 being broken.

[0061] Optional, such as Figure 7 As shown, the edge groove W provided at the edge position of the inorganic insulating layer 120 may have: an arc-shaped groove surface S1 and an opening surface S2 provided opposite to each other. Among them, the opening surface S2 of the edge groove W may be located on the side of the inorganic insulating layer 120 facing the bending area 00c, and the arc-shaped groove surface S1 of the edge groove W may be an arc-shaped concave surface. In this way, it can be ensured that the stress of the groove surface of the edge groove W provided at the edge position of the inorganic insulating layer 120 is gradual, and no stress mutation point will appear, thereby ensuring that the film stability of the inorganic insulating layer 120 is high.

[0062] In the present application, please refer to Figure 8 , Figure 8 4 is a schematic diagram of a partial film structure of a display panel provided in an embodiment of the present application. The touch lead 500 includes: a first lead portion 510 and a second lead portion 520. One end of the first lead portion 510 is electrically connected to the touch layer 400, and the second lead portion 520 is connected to an end of the first lead portion 510 that is away from the touch layer 400. At least part of the second lead portion 520 is located in the bending area 00c.

[0063] In a possible implementation, the second lead portion 520 may also be located on the side of the bending area 00c away from the display area 00a. In this way, after the flexible circuit board is subsequently bound to the side of the bending area 00c away from the display area 00a, the second lead portion 520 may be connected to the flexible circuit board, so that the touch layer 400 in the display panel 000 can realize the touch function under the control of the flexible circuit board.

[0064] In the embodiment of the present application, the touch layer 400 in the display panel 000 may include: a first metal touch layer and a second metal touch layer stacked. Figure 8 As shown, the display panel 000 may further include a touch insulating layer 600 located between the first metal touch layer and the second metal touch layer.

[0065] The first metal touch layer includes: a plurality of first touch electrodes and a plurality of second touch electrodes arranged in the same layer, and a connecting electrode for connecting two adjacent first touch electrodes. The second metal touch layer includes: a bridging electrode for connecting two adjacent second touch electrodes.

[0066] It should be noted that the crossover electrode and the connection electrode can be arranged crosswise, and the two can be insulated by the touch insulating layer 600. Among them, one of the first touch electrode and the second touch electrode can be a touch driving electrode, and the other can be a touch sensing electrode. Through the coordination of the touch driving electrode and the touch sensing electrode, the display panel can have a touch function. Figure 1 As shown in , the touch drive electrode can be a gray diamond area in the display area 00a, and the touch sensing electrode can be a white diamond area in the display area 00a. The touch drive electrode and the touch sensing electrode are both grid-shaped electrodes with multiple grid holes. Here, the grid hole can correspond to the light-emitting device 200, and the orthographic projection of the light-emitting device 200 on the driving backplane 100 is located within the orthographic projection of the corresponding grid hole on the driving backplane 100. In this way, the light emitted by the light-emitting device 200 can pass through the corresponding grid hole and then be emitted, so as to ensure that the light emitted by the light-emitting device 200 will not be blocked by the first touch electrode or the second touch electrode.

[0067] Optionally, the first touch electrode also includes a plurality of touch drive leads and a plurality of touch sensing leads located in the non-display area 00b. After the plurality of touch drive electrodes in each row are connected through the connecting electrodes, for the one touch drive electrode located at the edge of the display area 00a among the plurality of touch drive electrodes in each row, the touch drive electrode can be connected to a touch drive lead, that is, the plurality of touch drive electrodes in each row can be led out through a touch drive lead corresponding thereto. Similarly, after the plurality of touch sensing electrodes in each column are connected through the jumper electrodes, for the one touch sensing electrode located at the edge of the display area 00a among the plurality of touch sensing electrodes in each column, the touch sensing electrode can be connected to a touch sensing lead, that is, the plurality of touch sensing electrodes in each column can be led out through a touch sensing lead corresponding thereto.

[0068] It should be noted that the touch insulating layer 600 has a plurality of transfer holes K. The plurality of touch leads 500 in the display panel 000 may correspond to the plurality of transfer holes K, and a portion of the plurality of touch leads 500 may correspond to a plurality of touch driving leads, and another portion of the touch leads 500 may correspond to a plurality of touch sensing leads.

[0069] For any touch driving lead, the touch driving lead can be electrically connected to the first lead portion 510 in the corresponding touch lead 500 through the corresponding at least one transfer hole K. For any touch sensing lead, the touch sensing lead can be electrically connected to the first lead portion 510 in the corresponding touch lead 500 through the corresponding at least one transfer hole K. In this way, each touch driving lead and each touch sensing lead are connected to the flexible circuit board through the touch lead 500, so that the touch driving electrodes and touch sensing electrodes in the display area 00a can realize the touch function under the control of the flexible circuit board.

[0070] In the present application, the driving backplane 100 may further include: a first conductive layer 130, a first flat layer 140, and a second conductive layer stacked and located on the side of the second inorganic insulating layer 122 away from the substrate 110. The orthographic projection of the stress release region R on the substrate 110 does not overlap with the orthographic projection of the first conductive layer 130 on the driving backplane, so as to ensure that the first conductive layer 130 is not located in the stress release region R, and further ensure that the first conductive layer 130 can be more stably arranged on the side of the second inorganic insulating layer 122 away from the substrate 110.

[0071] It should be noted that the first conductive layer 130 includes the source and drain of the transistor, and other related signal lines in the driving backplane. The second conductive layer may include the touch control lead 500, and other related signal lines in the driving backplane.

[0072] It should also be noted that the first inorganic insulating layer 121 may be a gate insulating layer for electrically isolating the active layer and the gate in the transistor, and the second inorganic insulating layer 122 may be an interlayer dielectric layer for electrically isolating the source, drain and gate in the transistor.

[0073] In summary, the display panel provided in the embodiment of the present application has a display area and a non-display area located outside the display area, and the non-display area has a bending area. The display panel includes: a driving backplane, a light-emitting device, an encapsulation layer, a touch layer and a plurality of touch leads. Among them, the driving backplane includes a substrate, and at least one inorganic insulating layer located on one side of the substrate. In order to reduce the probability of the stress inside the inorganic insulating layer being transferred to the touch leads, a stress release area is set on the side of the inorganic insulating layer facing the bending area, and the orthographic projection of the stress release area on the substrate overlaps with the orthographic projection of the touch leads on the substrate. The side of the inorganic insulating layer facing the bending area releases the stress inside the inorganic insulating layer through the stress release area, so that the probability of the stress inside the inorganic insulating layer being transferred to the touch leads is low, which effectively reduces the risk of the touch leads being broken, and thereby reduces the possibility of failure of the touch function of the display panel, so as to ensure that the reliability of the display panel is high.

[0074] The embodiment of the present application also provides a display device. The display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. The display device may include a driver chip and a display panel, the display panel is the display panel in the above embodiment, and the driver chip is used to apply a driving signal to the display panel.

[0075] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0076] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0077] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel has a display area and a non-display area located outside the display area, and the non-display area has a bending area; the display panel includes: a driving backplane, a light-emitting device, a packaging layer, a touch layer and a plurality of touch leads; The driving backplane comprises: a substrate, and at least one inorganic insulating layer located on one side of the substrate; There are multiple light-emitting devices, and the multiple light-emitting devices are distributed on the same side of the driving backplane, and the multiple light-emitting devices are located in the display area; The encapsulation layer is located on a side of the plurality of light-emitting devices away from the driving backplane; The touch layer is located on a side of the driving backplane away from the encapsulation layer, and the touch layer is at least distributed in the display area; The plurality of touch leads are all electrically connected to the touch layer, and the touch leads are located in the non-display area; The at least one inorganic insulating layer has a stress release region on a side facing the bending region, and an orthographic projection of the stress release region on the substrate overlaps with an orthographic projection of the touch lead on the substrate.

2. The display panel according to claim 1, characterized in that: For any one of the at least one inorganic insulating layer, the inorganic insulating layer has avoidance grooves distributed in the stress release area.

3. The display panel according to claim 2, characterized in that: The orthographic projection of the touch lead on the substrate does not overlap with the orthographic projection of the inorganic insulating layer on the substrate.

4. The display panel according to claim 1, characterized in that: The at least one inorganic insulating layer has a plurality of through holes arranged in an array and distributed in the stress release area.

5. The display panel according to claim 4, characterized in that: The driving backplane comprises two layers of inorganic insulating layers stacked together, wherein the two layers of inorganic insulating layers are respectively: a first inorganic insulating layer and a second inorganic insulating layer; The plurality of through holes include: a plurality of first through holes for penetrating the first inorganic insulating layer, and a plurality of second through holes for penetrating the second inorganic insulating layer.

6. The display panel according to claim 5, characterized in that: An orthographic projection of the first through hole on the substrate does not overlap with an orthographic projection of the second through hole on the substrate.

7. The display panel according to claim 1, characterized in that: For any one of the at least one inorganic insulating layer, the inorganic insulating layer has a plurality of edge grooves distributed in the stress release region, and the plurality of edge grooves are arranged in a row at edge positions of the inorganic insulating layer toward the bending region.

8. The display panel according to claim 7, characterized in that: The edge groove has an arc-shaped groove surface and an opening surface which are arranged opposite to each other, and the opening surface is located on the side surface of the inorganic insulating layer facing the bending area.

9. The display panel according to any one of claims 1 to 8, characterized in that: The touch lead comprises: a first lead portion and a second lead portion; one end of the first lead portion is electrically connected to the touch layer, and the second lead portion is connected to an end of the first lead portion away from the touch layer; Wherein, at least a portion of the second lead portion is located in the bending area.

10. A display device, characterized in that: include: A driving chip and a display panel, wherein the display panel is the display panel according to any one of claims 1 to 9, and the driving chip is used to apply a driving signal to the display panel.

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