Display panel and electronic device

Abstract

The present application provides a display panel and an electronic device, wherein the display panel includes a functional area, a display area close to the functional area, and a first transition area and a second transition area between the functional area and the display area, wherein the second transition area is located on a side of the first transition area away from the display area, and the display panel also includes an inorganic layer, a first stack and a second stack stacked on a substrate, wherein in the first transition area, a plurality of dams are formed on a side of the second stack away from the first stack, and a gap is provided between each two adjacent dams, and by arranging the dams in the first transition area close to the display area, the width of the second transition area can be reduced, thereby reducing the width between the display area and the functional area, thereby alleviating the problem of a wide border width in the hole area of ​​the existing display device.

Description

Technical Field

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

[0002] With the development of display technologies, existing display devices are all designed towards a high screen-to-body ratio to obtain a full-screen display. The cut-out camera design is one of the methods to increase the screen-to-body ratio, in which a cut-out area is designed on the screen for placing the front camera. The edge of the cut-out area has to accommodate multiple signal lines, packaging structures, etc., resulting in a relatively wide border width of the cut-out area. And the relatively wide border of the cut-out area will cause a black border to appear around the camera, affecting the visual effect. Summary of the Invention

[0003] The present application provides a display panel and an electronic device to alleviate the technical problem that the border width of the cut-out area of the existing display device is relatively wide.

[0004] To solve the above problems, the technical solutions provided by the present application are as follows:

[0005] An embodiment of the present application provides a display panel, which includes a functional area, a display area adjacent to the functional area, and a first transition area and a second transition area located between the functional area and the display area. The second transition area is located on the side of the first transition area away from the display area; the display panel further includes:

[0006] A substrate;

[0007] An inorganic layer, disposed on one side of the substrate, and in the second transition area, a plurality of grooves are formed in the inorganic layer, and each groove penetrates the inorganic layer and extends into the substrate;

[0008] A first stack, disposed on the side of the inorganic layer away from the substrate, and extending from the display area to the first transition area;

[0009] A second stack, disposed on the side of the first stack away from the inorganic layer, and extending from the display area to the first transition area;

[0010] Wherein, in the first transition area, a plurality of dams are formed on the side of the second stack away from the first stack, and there is a gap between every two adjacent dams.

[0011] In the display panel provided by the embodiment of the present application, the second stack includes a first planarization layer and a pixel definition layer which are stacked, the pixel definition layer is located on a side of the first planarization layer away from the first stack. In the first transition region, a first protrusion is formed on the first planarization layer, the pixel definition layer covers the first protrusion, and the first protrusion and the pixel definition layer covering the first protrusion form the dam.

[0012] In the display panel provided by the embodiment of the present application, the second stack further includes a barrier layer located on a side of the pixel definition layer away from the first planarization layer. In the first transition region, the barrier layer covers the pixel definition layer on the first protrusion, and then the dam further includes the barrier layer provided corresponding to the first protrusion.

[0013] In the display panel provided by the embodiment of the present application, the pixel definition layer forms a notch at an interval between two adjacent dams.

[0014] In the display panel provided by the embodiment of the present application, the height of the first protrusion is greater than the thickness of the pixel definition layer, and the thickness of the pixel definition layer covering the first protrusion is less than the thickness of the pixel definition layer in the display area.

[0015] In the display panel provided by the embodiment of the present application, the second stack includes a first planarization layer, a pixel definition layer and a barrier layer which are stacked. The pixel definition layer is located on a side of the first planarization layer away from the first stack. In the first transition region, a second protrusion is formed on the pixel definition layer, the barrier layer covers the second protrusion, and the second protrusion and the barrier layer covering the second protrusion form the dam.

[0016] In the display panel provided by the embodiment of the present application, each groove includes a first opening and a second opening which communicate with each other. The first opening penetrates through the inorganic layer, the second opening is located in the substrate, and the width of the first opening near the substrate side is less than the width of the second opening near the inorganic layer side.

[0017] In the display panel provided by the embodiment of the present application, the plurality of grooves include a first groove and at least one second groove. The first groove is arranged near the first transition region, and the second groove is located on a side of the first groove away from the first transition region.

[0018] In the display panel provided in the embodiment of the present application, the second stack also includes a second planarization layer, the first planarization layer is located on the side of the second planarization layer away from the first stack, and in the first transition zone, the display panel also includes a plurality of signal lines and a plurality of signal switching lines, the plurality of signal lines are arranged on the second planarization layer, the plurality of signal switching lines are arranged in the first stack, and each of the signal lines is electrically connected to the corresponding signal switching line.

[0019] An embodiment of the present application further provides an electronic device, which includes a housing and a display panel according to one of the aforementioned embodiments, wherein the housing is formed with a receiving cavity, and the display panel is assembled in the receiving cavity.

[0020] The beneficial effects of the present application are as follows: in the display panel and electronic device provided by the present application, by setting the dam in the first transition zone close to the display area, the width of the second transition zone can be reduced, thereby reducing the width between the display area and the functional area, thereby solving the problem of the wide width of the border of the hole area of ​​the existing display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 The figure is a schematic diagram of a top view structure of an existing display device.

[0023] Figure 2 A schematic diagram of a top view structure of a display panel provided in an embodiment of the present application.

[0024] Figure 3 for Figure 2 The cross-sectional structure diagram of the display panel along the AA' direction is shown in FIG.

[0025] Figure 4 A schematic diagram of the detailed structure of the display area of ​​the display panel provided in an embodiment of the present application.

[0026] Figure 5 A schematic diagram of the detailed structure of the second transition zone groove provided in an embodiment of the present application.

[0027] Figure 6 A schematic diagram of a cross-sectional structure of a partial film layer of a display panel provided in an embodiment of the present application.

[0028] Figure 7Another schematic diagram of the cross-sectional structure of a partial film layer of a display panel provided in an embodiment of the present application.

[0029] Figure 8 A schematic cross-sectional structure diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in the present application, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and regions is exaggerated for clear understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited to this.

[0031] In view of the problem that the width of the border of the hole area of ​​the existing display device is relatively wide, the inventor of the present application found in the research: Figure 1 , Figure 1 The schematic diagram of a top view structure of an existing display device is shown in FIG. 1 , wherein a winding area TA1' close to the display area AA' and a packaging area TA2' between the winding area TA1' and the hole area HA' are provided between the display area AA' and the hole area HA' of the display device, wherein a plurality of signal lines, such as data lines Data, are provided in the winding area TA1'; and a packaging structure, such as a dam Dam, is provided in the packaging area TA2'. The structural design of the winding area TA1' and the packaging area TA2' makes the frame of the hole area HA' wider.

[0032] In order to solve the problem of wide borders in the hole area of ​​the existing display device, the inventor of the present application proposes a display panel and an electronic device:

[0033] Please refer to Figures 2 to 5 , Figure 2 A schematic diagram of a top view of the structure of a display panel provided in an embodiment of the present application is shown in FIG. Figure 3 for Figure 2 The cross-sectional structure diagram of the display panel along the A-A' direction is shown in FIG. Figure 4 A schematic diagram of the detailed structure of the display area of ​​the display panel provided in an embodiment of the present application, Figure 5Schematic diagram of the detailed structure of the second transition region groove provided by the embodiment of the present application. The display panel 100 includes a functional area HA, a display area AA adjacent to the functional area HA, and a first transition region TA1 and a second transition region TA2 located between the functional area HA and the display area AA. The second transition region TA2 is located on the side of the first transition region TA1 away from the display area AA.

[0034] Among them, the display area AA is used to display images. The functional area HA can be located in any area of the display panel 100. For example, the functional area HA can be located in the middle area or the edge area of the display panel 100. The functional area HA is provided with through holes, and the through holes penetrate through each film layer of the display panel 100. Functional components such as speakers, cameras, and various sensors can be placed in the through holes to realize functions such as under-screen cameras and under-screen fingerprints, thereby increasing the screen-to-body ratio of the display panel 100.

[0035] The first transition region TA1 and the second transition region TA2 are located between the functional area HA and the display area AA. The first transition region TA1 is used to place signal lines blocked by the functional area HA, such as data lines, power lines, etc.; the second transition region TA2 is used to set up a packaging structure to avoid affecting the packaging effectiveness of the display panel 100 due to the setting of the functional area HA. When the functional area HA is located in the middle area of the display panel 100, the second transition region TA2 surrounds the functional area HA; when the functional area HA is located in the edge area of the display panel 100, the second transition region TA2 semi-surrounds the functional area HA.

[0036] Specifically, referring to Figure 3 , the display panel 100 further includes a substrate 10, an inorganic layer 20 provided on one side of the substrate 10, and a first stack 30 and a second stack 40 provided on the side of the inorganic layer 20 away from the substrate 10. The second stack 40 is provided on the side of the first stack 30 away from the inorganic layer 20. The inorganic layer 20 extends from the display area AA to the first transition region TA1 and the second transition region TA2. And in the second transition region TA2, the inorganic layer 20 is formed with a plurality of grooves 21, and each groove 21 penetrates through the inorganic layer 20 and extends into the substrate 10. The first stack 30 and the second stack 40 both extend from the display area AA to the first transition region TA1, that is, the first stack 30 and the second stack 40 are both provided corresponding to the display area AA and the first transition region TA1, and are not provided in the second transition region TA2. Among them, in the first transition region TA1, the second stack 40 forms a plurality of dams 50 on the side away from the first stack 30, and there is a gap between every two adjacent dams 50.

[0037] Optionally, the substrate 10 may be a rigid substrate or a flexible substrate. When the substrate 10 is a rigid substrate, it may include a hard substrate such as a glass substrate. When the substrate 10 is a flexible substrate, it may include a flexible substrate such as a polyimide (PI) film, an ultra-thin glass film, etc. Using a flexible substrate as the substrate 10 can fabricate a flexible display panel to achieve special properties such as bending and curling of the display panel 100.

[0038] In the embodiment of the present application, taking the substrate 10 as a flexible substrate as an example, the substrate 10 may include a flexible film and an inorganic film that are alternately stacked. For example, the substrate 10 includes a first polyimide film 11, a first inorganic film 12, and a second polyimide film 13 that are stacked. In this way, while achieving the flexibility of the substrate 10, the water and oxygen barrier properties of the substrate 10 can be enhanced.

[0039] The inorganic layer 20 is disposed on the substrate 10. Specifically, the inorganic layer 20 is disposed on the second polyimide film 13. The material of the inorganic layer 20 may include inorganic materials such as silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiON), etc. The inorganic layer 20 can further prevent unwanted impurities or contaminants (such as moisture, oxygen, etc.) from diffusing from the substrate 10 to the devices that may be damaged by these impurities or contaminants, and at the same time can also provide a flat top surface.

[0040] The first stack 30 is disposed on the side of the inorganic layer 20 away from the substrate 10. The first stack 30 includes a first gate insulating layer 31, a second gate insulating layer 32, an interlayer insulating layer 33, etc. that are stacked on the inorganic layer 20. The second stack 40 is disposed on the side of the first stack 30 away from the inorganic layer 20. The second stack 40 includes a second planarization layer 41, a first planarization layer 42, a pixel definition layer 43, a dam layer 44, etc. that are stacked on the interlayer insulating layer 33.

[0041] The film layer structure of the display panel 100 in each region will be specifically described below:

[0042] Refer to Figure 4, within the display area AA, the display panel 100 further includes a thin film transistor 60 and a light emitting device 70. The thin film transistor 60 includes a semiconductor layer 61, a first gate 62, a second gate 63, a first source 641 and a first drain 642, and a second drain 65. The semiconductor layer 61 is disposed on the inorganic layer 20. The semiconductor layer 61 includes a channel region 611 and source regions 612 and drain regions 613 located on both sides of the channel region 611. The first gate insulating layer 31 covers the semiconductor layer 61 and the inorganic layer 20. The first gate 62 is disposed on the first gate insulating layer 31, and the first gate 62 is disposed corresponding to the channel region 611 of the semiconductor layer 61. The second gate insulating layer 32 covers the first gate 62 and the first gate insulating layer 31. The second gate 63 is disposed on the second gate insulating layer 32, and the second gate 63 and the first gate 62 are disposed corresponding to each other. The interlayer insulating layer 33 covers the second gate 63 and the second gate insulating layer 32. The first source 641 and the first drain 642 are disposed on the interlayer insulating layer 33, and the first source 641 is electrically connected to the source region 612 of the semiconductor layer 61, and the first drain 642 is electrically connected to the drain region 613 of the semiconductor layer 61.

[0043] The second planarization layer 41 covers the interlayer insulating layer 33. The second drain 65 is disposed on the second planarization layer 41, and the second drain 65 is electrically connected to the first drain 642. The first planarization layer 42 covers the second drain 65 and the second planarization layer 41.

[0044] The light emitting device 70 includes a first electrode 71, a second electrode 72, and a light emitting layer 73 sandwiched between the first electrode 71 and the second electrode 72. The first electrode 71 is disposed on the first planarization layer 42. The pixel defining layer 43 covers the first electrode 71 and the first planarization layer 42, and the pixel defining layer 43 is provided with a pixel opening at a position corresponding to the first electrode 71. The light emitting layer 73 is disposed on the first electrode 71 within the pixel opening, and the second electrode 72 is disposed on the light emitting layer 73. Optionally, the first electrode 71 is an anode and the second electrode 72 is a cathode, but the present application is not limited thereto.

[0045] In order to protect the light-emitting device 70 and prevent the light-emitting device 70 from failing due to the intrusion of water and oxygen, the display panel 100 further includes a packaging layer (not shown in the figure), and the packaging layer covers the light-emitting device 70. The packaging layer can adopt thin-film packaging. For example, the packaging layer can be a stacked structure formed by laminating three thin films of a first inorganic packaging layer, an organic packaging layer, and a second inorganic packaging layer in sequence or a stacked structure with more layers. The material of the organic packaging layer includes one or several organic materials such as epoxy-based and acrylic-based materials. The organic packaging layer can be coated on the first inorganic packaging layer by one of coating processes such as ink jet print (IJP) and spraying. It can be understood that when printing the organic packaging layer by the ink jet printing process, since the printed ink has fluidity, a dam layer 44 is provided to block the overflow of the printed ink.

[0046] In addition, in the display area AA, the display panel 100 further includes a variety of signal lines, such as data lines, gate scan lines, power supply lines (VDD, VSS), etc. As Figure 4 Exemplarily shown, the data line 80 is disposed on the same layer as the second drain 65. Of course, the present application is not limited thereto. The data line 80 of the present application can also be disposed on the same layer as other metal layers. For example, the data line 80 can also be disposed on the same layer as the first drain 642. In addition, it should be noted that the structure of the thin-film transistor 60 of the present application is not limited to that shown in this embodiment. The thin-film transistor 60 of the present application can also adopt a single-gate, single-source drain, and bottom-gate structure, etc.

[0047] Next, the film layer structure of the first transition region TA1 will be specifically described:

[0048] It can be understood that since the through hole is provided in the functional region HA, some signal lines in the display area AA need to bypass the through hole in the functional region HA. Therefore, the first transition region TA1 is provided between the functional region HA and the display area AA as a wire routing region for placing the signal lines blocked by the functional region HA. In this embodiment, the blocked signal line is taken as the data line 80 as an example. Limited by the process, a certain distance needs to be ensured between adjacent data lines 80, and there are dozens of data lines 80 blocked by the functional region HA. Thus, a relatively wide width is required to place the data lines 80. In the present application, by providing a signal transfer line 90 in the first stack 30 in the first transition region TA1, the data line 80 is electrically connected to the signal transfer line 90 to reduce the width of the first transition region TA1.

[0049] Specifically, as Figure 3As shown, the signal transfer line 90 can be disposed on the same layer as any one of the metal layers of the first source electrode 641, the first gate electrode 62, and the second gate electrode 63. Exemplarily, as Figure 4 shown, the signal transfer line 90 is disposed on the same layer as the first gate electrode 62, and the data line 80 is electrically connected to the signal transfer line 90 through a via.

[0050] Continuing to refer to Figure 3 , a plurality of dams 50 are formed on the second stack 40. The plurality of dams 50 can play a secondary blocking role and a slight anti-crack role when the inkjet printing overflows slightly. In the first transition region TA1, a first protrusion 421 is formed on the first planarization layer 42. The pixel definition layer 43 covers the first protrusion 421, and the barrier layer 44 covers the pixel definition layer 43 on the first protrusion 421. The first protrusion 421, the pixel definition layer 43 covering the first protrusion 421, and the barrier layer 44 covering the pixel definition layer 43 together form the dam 50. The cross-sectional shape of the first protrusion 421 includes a trapezoid and the like.

[0051] Optionally, the number of the dams 50 is two. One of the dams 50 is disposed close to the second transition region TA2, that is, one of the dams 50 is formed at the end of the second stack 40 close to the second transition region TA2; the other dam 50 is disposed away from the second transition region TA2, so that there is a sufficient interval between the two dams 50 to provide a buffer zone for the organic encapsulation layer for printing the encapsulation layer. The pixel definition layer 43 forms a notch at the interval between the two adjacent dams 50 to improve the reliability of the buffer zone.

[0052] Optionally, the height of the first protrusion 421 is greater than the thickness of the pixel definition layer 43 in the display area AA, and the thickness of the pixel definition layer 43 covering the first protrusion 421 is less than the thickness of the pixel definition layer 43 in the display area AA, so that the pixel definition layer 43 can more easily cover the first protrusion 421 to improve the reliability of the dam 50.

[0053] Next, the film layer structure of the second transition region TA2 will be specifically described:

[0054] With reference to Figure 3 and Figure 5 , in order to improve the effective encapsulation effect of the display panel 100, a second transition region TA2 is further provided between the functional region HA and the first transition region TA1. The inorganic layer 20 forms a plurality of grooves 21 in the second transition region TA2 to block the water and oxygen intrusion path.

[0055] Specifically, the plurality of grooves 21 include a first groove 211 and at least one second groove 212, wherein the first groove 211 is disposed close to the first transition area TA1, and the second groove 212 is disposed on a side of the first groove 211 away from the first transition area TA1. Each of the grooves 21 includes a first opening (such as a first opening) that penetrates each other. Figure 5 2111 and 2121 shown) and the second opening (such as Figure 5 2112 and 2122 are shown), taking the first groove 211 as an example, the first opening 2111 passes through the inorganic layer 20, and the second opening 2112 is located in the substrate 10. The width D11 of the first opening 2111 close to the substrate 10 is smaller than the width D12 of the second opening 2112 close to the inorganic layer 20, so that the first groove 211 forms an undercut structure.

[0056] In this way, when preparing the light-emitting device 70, the evaporated organic functional layer will be disconnected at the undercut structure of the groove 21 to prevent water and oxygen from entering the display area AA along the organic functional layer from the functional area HA, thereby cutting off the water and oxygen invasion path. The encapsulation layer extends from the display area AA to the first transition area TA1 and the second transition area TA2, and covers the groove 21 of the second transition area TA2 to form an effective package. At the same time, the setting of the groove 21 can also block the cracks generated when forming the through hole of the functional area HA from extending to the display area AA.

[0057] Optionally, a width D11 of the first opening 2111 of the first groove 211 is greater than a width D21 of the first opening 2121 of the second groove 212, a width D12 of the second opening 2112 of the first groove 211 is greater than a width D22 of the second opening 2122 of the second groove 212, and the number of the second grooves 212 is 2 to 6, so that the groove 21 can form a better undercut structure on the substrate 10, while allowing the inorganic encapsulation layer of the encapsulation layer to completely cover the undercut structure to block the water and oxygen intrusion path.

[0058] In this embodiment, by setting the dam 50 in the first transition area TA1 close to the display area AA, the width of the second transition area TA2 can be reduced, thereby reducing the width between the display area AA and the functional area HA, thereby solving the problem of the wide width of the hole area frame of the existing display device.

[0059] In one embodiment, please refer to Figures 2 to 6 , Figure 6This is a schematic cross-sectional structure diagram of some film layers of the display panel provided by the embodiment of the present application. Different from the above embodiment, the dam layer 44 is not provided in the first transition region TA1. At this time, the dam 50 is formed by the first protrusion 421 and the pixel definition layer 43 covering the first protrusion 421. In this way, the beneficial effects in the above embodiment can also be achieved. For other descriptions, please refer to the above embodiment and will not be repeated here.

[0060] In one embodiment, please refer to Figures 2 to 7 , Figure 7 This is another schematic cross-sectional structure diagram of some film layers of the display panel provided by the embodiment of the present application. Different from the above embodiment, in the first transition region TA1, the pixel definition layer 43 is formed with a second protrusion 431, and the dam layer 44 covers the second protrusion 431. The second protrusion 431 and the dam layer 44 covering the second protrusion 431 form the dam 50. In this way, the beneficial effects in the above embodiment can also be achieved. For other descriptions, please refer to the above embodiment and will not be repeated here.

[0061] Based on the same inventive concept, the embodiment of the present application further provides an electronic device. Please refer to Figure 8 , Figure 8 This is a schematic cross-sectional structure diagram of the electronic device provided by the embodiment of the present application. The electronic device 1000 includes a housing 200 and the display panel 100 of one of the foregoing embodiments. The housing 200 is formed with a receiving cavity 201, and the display panel 100 is assembled in the receiving cavity 201. The electronic device 1000 can be a wearable device, such as a smart bracelet, a smart watch, or a virtual reality (VR) device, etc., or a mobile phone, an e-book, an electronic newspaper, a television, or a personal portable computer. It can also be a flexible OLED display or lighting device that can be bent and folded. The embodiment of the present application does not specifically limit the specific form of the electronic device.

[0062] According to the above embodiment, it can be known that:

[0063] The present application provides a display panel and an electronic device, wherein the display panel comprises a functional area, a display area close to the functional area, and a first transition area and a second transition area between the functional area and the display area, wherein the second transition area is located on a side of the first transition area away from the display area, and the display panel further comprises an inorganic layer, a first stack and a second stack stacked on a substrate, wherein in the first transition area, a plurality of dams are formed on a side of the second stack away from the first stack, and a gap is provided between each two adjacent dams, and by arranging the dams in the first transition area close to the display area, the width of the second transition area can be reduced, thereby reducing the width between the display area and the functional area, thereby solving the problem of a wide border width of a hole-digging area of ​​an existing display device.

[0064] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized in that, it includes a functional area, a display area adjacent to the functional area, and a first transition area and a second transition area located between the functional area and the display area, the second transition area being located on the side of the first transition area away from the display area; the display panel further includes: a substrate; an inorganic layer disposed on one side of the substrate, and in the second transition area, the inorganic layer is formed with a plurality of grooves, the plurality of grooves including a first groove and at least one second groove, the first groove being disposed close to the first transition area, the second groove being located on the side of the first groove away from the first transition area, each groove penetrating through the inorganic layer and extending into the substrate, each groove including a first opening and a second opening that communicate with each other, the width of the first opening of the first groove being greater than the width of the first opening of the second groove, and the width of the second opening of the first groove being greater than the width of the second opening of the second groove; a first stack disposed on the side of the inorganic layer away from the substrate and extending from the display area to the first transition area; a second stack disposed on the side of the first stack away from the inorganic layer and extending from the display area to the first transition area; wherein, in the first transition area, the second stack forms a plurality of dams on the side away from the first stack, and there is a gap between every two adjacent dams; no dam is provided between the first groove and the second groove.

2. The display panel according to claim 1, characterized in that, the second stack includes a first planarization layer and a pixel definition layer stacked, the pixel definition layer being located on the side of the first planarization layer away from the first stack, in the first transition area, the first planarization layer forms a first protrusion, the pixel definition layer covers the first protrusion, and the first protrusion and the pixel definition layer covering the first protrusion form the dam.

3. The display panel according to claim 2, characterized in that, the second stack further includes a barrier layer located on the side of the pixel definition layer away from the first planarization layer, in the first transition area, the barrier layer covers the pixel definition layer on the first protrusion, and then the dam further includes the barrier layer corresponding to the first protrusion.

4. The display panel according to claim 2, characterized in that, the pixel definition layer forms a notch at the gap between every two adjacent dams.

5. The display panel according to claim 2, characterized in that, the height of the first protrusion is greater than the thickness of the pixel definition layer, and the thickness of the pixel definition layer covering the first protrusion is less than the thickness of the pixel definition layer in the display area.

6. The display panel according to claim 1, characterized in that, The second stack includes a first planarization layer, a pixel definition layer and a blocking wall layer which are stacked. The pixel definition layer is located on a side of the first planarization layer away from the first stack. In the first transition region, the pixel definition layer forms a second protrusion. The blocking wall layer covers the second protrusion. The second protrusion and the blocking wall layer covering the second protrusion form the dam.

7. The display panel according to any one of claims 1 to 6, It is characterized in that The first opening penetrates the inorganic layer, the second opening is located in the substrate, and the width of the first opening close to the substrate is smaller than the width of the second opening close to the inorganic layer.

8. The display panel according to claim 6, It is characterized in that The second stack also includes a second planarization layer, and the first planarization layer is located on a side of the second planarization layer away from the first stack. In the first transition zone, the display panel also includes a plurality of signal lines and a plurality of signal switching lines, and the plurality of signal lines are arranged on the second planarization layer, and the plurality of signal switching lines are arranged in the first stack, and each of the signal lines is electrically connected to the corresponding signal switching line.

9. An electronic device, It is characterized in that The invention comprises a housing and a display panel as claimed in any one of claims 1 to 8, wherein the housing is formed with a receiving cavity, and the display panel is assembled in the receiving cavity.

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