Display panel and display device

Abstract

The invention provides a display panel and a display device.The display panel is provided with a first area and a second area surrounding the first area, the display panel comprises a substrate, an isolation structure, a light-emitting function layer, a first electrode layer and a first signal line, the isolation structure is arranged on one side of the substrate, a plurality of opening structures arranged at intervals are defined by the isolation structure, and the light-emitting function layer is arranged on the first electrode layer; the light-emitting function layer is arranged on one side of the substrate and located in the first area, and the light-emitting function layer comprises a plurality of light-emitting structures arranged in the opening structures respectively. The first electrode layer is arranged on the side, away from the substrate, of the light-emitting functional layer, and the first electrode layer comprises first electrodes which are arranged in the opening structures and electrically connected with the isolation structures. The first signal line is located on one side of the isolation structure in the first direction, the first signal line is electrically connected with the isolation structure so that a power signal provided by the first signal line can be transmitted into the first electrode through the isolation structure, and the first direction is parallel to the plane where the substrate is located.

Description

Technical Field

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

[0002] Flat display panels such as Organic Light Emitting Display (OLED) panels and display panels using light emitting diode (LED) devices have the advantages of high image quality, power saving, thin body and wide application range. They are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, desktop computers, etc., becoming the mainstream in display devices. Summary of the invention

[0003] Embodiments of the present application provide a display panel and a display device, which can reduce the size of a frame.

[0004] In a first aspect, an embodiment of the present application provides a display panel, wherein the display panel has a first area and a second area surrounding the first area, the display panel includes a substrate, an isolation structure, a light-emitting functional layer, a first electrode layer and a first signal line, the isolation structure is arranged on one side of the substrate and located in the first area, the isolation structure encloses a plurality of opening structures arranged at intervals, the light-emitting functional layer is arranged on one side of the substrate and located in the first area, the light-emitting functional layer includes a plurality of light-emitting structures arranged in the plurality of opening structures, and there is at least one light-emitting structure in one opening structure.

[0005] The first electrode layer is arranged on a side of the light-emitting functional layer away from the substrate, and the first electrode layer includes a first electrode which is arranged in the opening structure and is electrically connected to the isolation structure. The first signal line is located on one side of the isolation structure along a first direction, and the first signal line is electrically connected to the isolation structure to transmit the power signal to the first electrode with the help of the isolation structure, and the first direction is parallel to the plane where the substrate is located.

[0006] In some embodiments, the isolation structure includes a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate.

[0007] In some embodiments, the first isolation portion includes a conductive material, and the first electrode is electrically connected to the first isolation portion.

[0008] In some embodiments, at least a portion of the first signal line contacts the first isolation portion.

[0009] In some embodiments, the isolation structure further includes a third isolation portion located on a side of the first isolation portion facing the substrate, the third isolation portion includes a conductive material, and is electrically connected to the first isolation portion.

[0010] In some embodiments, the first electrode is overlapped with the third isolation portion.

[0011] In some embodiments, the second isolation portion includes a conductive material.

[0012] In some embodiments, the first isolation portion is electrically connected to the second isolation portion, and at least a portion of the first signal line is in contact with the second isolation portion.

[0013] In some embodiments, the isolation structure further includes a first insulating portion disposed between the first isolation portion and the second isolation portion.

[0014] In some embodiments, an etching selectivity ratio of the first isolation portion to the second isolation portion is greater than 1.

[0015] In some embodiments, the display panel further includes a driving chip disposed in the second area and located on one side of the isolation structure along the first direction, and the first signal line is electrically connected to the driving chip.

[0016] In some embodiments, the second area includes a first partition and a second partition located between the driving chip and the isolation structure, the first partition and the second partition are arranged side by side in the second direction, and the first direction and the second direction are arranged to intersect, wherein the first signal line located in the first partition and the first signal line located in the second partition are insulated from each other.

[0017] In some embodiments, the isolation structure includes a first isolation structure and a second isolation structure that are insulated. The first isolation structure and the second isolation structure are located in different partitions of the first region. The first isolation structure and the second isolation structure have different resistances in the same orthographic projection area. Different first signal lines are electrically connected to the first isolation structure and the second isolation structure, respectively.

[0018] In some embodiments, the orthographic projection areas of the first isolation structure and the second isolation structure on the substrate are different; and / or the cross-sectional dimensions of the first isolation structure and the second isolation structure are different.

[0019] In some embodiments, the first isolation structure is spaced apart from the second isolation structure.

[0020] In some embodiments, the isolation structure further includes an insulating structure between the first isolation structure and the second isolation structure.

[0021] In some embodiments, the display panel further includes a first encapsulation layer disposed on a side of the first electrode layer facing away from the substrate, and the first encapsulation layer includes a plurality of first encapsulation portions separately disposed in the opening structure.

[0022] In some embodiments, the display panel further includes a second encapsulation layer located on a side of the first encapsulation layer facing away from the substrate, and a third encapsulation layer located on a side of the second encapsulation layer facing away from the substrate.

[0023] In some embodiments, the first encapsulation layer and the third encapsulation layer both include inorganic materials.

[0024] In some embodiments, the display panel further includes a blocking portion disposed in the second area, and an orthographic projection of the blocking portion on the substrate is staggered with an orthographic projection of the first signal line on the substrate.

[0025] In some embodiments, the first encapsulation layer does not overlap with an orthographic projection of the barrier portion on the substrate.

[0026] In some embodiments, the third encapsulation layer is located on a side of the barrier portion facing away from the substrate, and covers at least a portion of the structure of the barrier portion.

[0027] In some embodiments, the display panel further includes a gate driving circuit located in the second region, and the blocking portion is at least partially located on a side of the gate driving circuit facing away from the substrate, or the blocking portion is adjacent to the gate driving circuit.

[0028] In some embodiments, the display panel further includes a second insulating portion between the blocking portion and the gate driving circuit.

[0029] In some embodiments, the display panel further includes a pixel definition layer disposed on the side of the isolation structure facing the substrate, the pixel definition layer includes a pixel defining portion and a pixel opening enclosed by the pixel defining portion, and the light emitting structure is at least partially located in the pixel opening.

[0030] In some embodiments, the pixel definition layer is partially located on a side of the barrier facing away from the substrate.

[0031] In a second aspect, an embodiment of the present application provides a display device, comprising a display panel in any of the aforementioned embodiments.

[0032] The embodiment of the present application provides a display panel and a display device, in which the first signal line is not directly connected to the first electrode, but the power signal is transmitted to each first electrode by means of an isolation structure. Specifically, since the isolation structure itself is arranged corresponding to each first electrode, and signal transmission can be achieved between the two. Therefore, there is no need to extend the first signal line to the position of each first electrode, that is, the first signal line does not need to be arranged around each first electrode, and the first signal line is arranged on one side of the isolation structure along the first direction, and is electrically connected to the isolation structure. In this way, the power signal in the first signal line can be transmitted to each first electrode by means of the isolation structure, so as to meet the needs of signal transmission. And since the first signal line is only located on one side of the isolation structure along the first direction, rather than in a ring structure, it helps to reduce the frame size of the display panel and improve the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 is a structural schematic diagram of a display panel provided in an embodiment of the present application;

[0035] Figure 2 yes Figure 1 A schematic diagram of the relative position relationship between the isolation structure and the first signal line in the middle region Q;

[0036] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0037] Figure 4 is a schematic diagram of a cross-sectional structure of another display panel at AA provided in an embodiment of the present application;

[0038] Figure 5 is a schematic diagram of a cross-sectional structure of another display panel at AA provided in an embodiment of the present application;

[0039] Figure 6 The present application also provides a schematic diagram of the relative position relationship between the isolation structure and the first signal line in the area Q of the display panel;

[0040] Figure 7 yes Figure 2 Schematic diagram of the cross-sectional structure at BB in the middle;

[0041] Figure 8 is a schematic diagram of a cross-sectional structure of another display panel at position BB provided in an embodiment of the present application;

[0042] Fig. 9 It is a structural schematic diagram of a display device provided in an embodiment of the present application.

[0043] Marking Description:

[0044] 10. Substrate;

[0045] 20. Isolation structure; 21. Opening structure; 22. First isolation part; 23. Second isolation part; 24. Third isolation part; 25. First insulating part; 26. First isolation structure; 27. Second isolation structure; 28. Insulation structure;

[0046] 30. Light-emitting functional layer; 31. Light-emitting structure;

[0047] 40. first electrode layer; 41. first electrode;

[0048] 50. second electrode layer; 51. second electrode;

[0049] 60. First signal line;

[0050] 71, first packaging layer; 711, first packaging part; 72, second packaging layer; 73, third packaging layer;

[0051] 80. pixel definition layer; 81. pixel definition portion; 82. pixel opening;

[0052] 90. blocking portion; 91. second insulating portion;

[0053] D1, gate drive circuit;

[0054] IC, driver chip;

[0055] A1, first zone; A2, second zone; A21, first sub-zone; A22, second sub-zone;

[0056] X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0057] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0058] It should be noted that, 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 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 a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0059] As users' demand for larger display sizes increases, the problem of narrowing the display panel border size has become particularly prominent. In related technologies, multiple circuit structures are usually required to be arranged at the display panel border position to meet the normal operation needs of the display panel. However, the existence of these circuit structures makes it difficult to reduce the border size of the display panel. Forcibly reducing the border size will cause the display panel to display abnormally or reduce the display quality.

[0060] Regarding the above issues, please refer to Figures 1 to 3 The embodiment of the present application provides a display panel, the display panel has a first area A1 and a second area A2 arranged around the first area A1, the display panel includes a substrate 10, an isolation structure 20, a light-emitting functional layer 30, a first electrode layer 40 and a first signal line 60, the isolation structure 20 is arranged on one side of the substrate 10, the isolation structure 20 encloses a plurality of opening structures 21 arranged at intervals, the light-emitting functional layer 30 is arranged on one side of the substrate 10 and is located in the first area A1, the light-emitting functional layer 30 includes a plurality of light-emitting structures 31 arranged in the plurality of opening structures 21, and there is at least one light-emitting structure 31 in one opening structure 21. For example, there is one light-emitting structure 31 in one opening structure 21, or there are multiple light-emitting structures 31 with the same light-emitting color in one opening structure 21.

[0061] The first electrode layer 40 is disposed on a side of the light-emitting functional layer 30 away from the substrate 10, and the first electrode layer 40 includes a first electrode 41 which is disposed in the opening structure 21 and is electrically connected to the isolation structure 20. The first signal line 60 is located on one side of the isolation structure 20 along the first direction X, and the first signal line 60 is electrically connected to the isolation structure 20 to transmit the power signal provided by the first signal line 60 to the first electrode 41 with the help of the isolation structure 20. The first direction X is parallel to the plane where the substrate 10 is located.

[0062] The display panel has at least two areas, a first area A1 and a second area A2. The first area A1 is a display area in the display panel for achieving a display effect. The second area A2 is arranged on the outer periphery of the first area A1 and is mainly used to arrange the drive circuit in the display panel. The second area A2 is a non-display area. The embodiment of the present application does not limit the size and shape of the first area A1 and the second area A2. For example, the first area A1 can be a square structure, and the second area A2 can be a square ring structure.

[0063] The substrate 10 mainly plays a supporting and bearing role, and other film layers are stacked on the substrate 10 in sequence. The stacking arrangement mentioned here means that the other film layers are arranged in sequence along the thickness direction Z of the substrate 10. Among them, the substrate 10 may include multiple film layer structures, and the specific film layer structure composition of the substrate 10 is not limited in the embodiment of the present application. And the thickness direction Z of other film layers located on one side of the substrate 10 is usually consistent with the thickness direction Z of the substrate 10 itself. Therefore, for the convenience of expression, the thickness direction Z of the substrate 10 or the thickness direction Z of other film layers mentioned later in the embodiment of the present application are all illustrated in the same direction.

[0064] The light-emitting functional layer 30 and the isolation structure 20 are located on the same side of the substrate 10. The light-emitting functional layer 30 is located in the first area A1 and includes a plurality of light-emitting structures 31. The light-emitting structure 31 is the main device for realizing light-emitting display. Among them, the light-emitting structure 31 includes but is not limited to a red light-emitting structure 31 for emitting red light, a green light-emitting structure 31 for emitting green light, and a blue light-emitting structure 31 for emitting blue light. Each light-emitting structure 31 may include a stacked hole injection layer (Hole Inject Layer, HIL), a hole transport layer (Hole Transport Layer, HTL), a light-emitting layer, an electron injection layer (Electron Inject Layer, EIL) and an electron transport layer (Electron Transport Layer, ETL).

[0065] The first electrode layer 40 is located on the side of the light-emitting functional layer 30 away from the substrate 10. Optionally, the display panel further includes a second electrode layer 50 located on the side of the light-emitting functional layer 30 facing the substrate 10. The first electrode layer 40 is provided with a first electrode 41, and the second electrode layer 50 is provided with a second electrode 51. The number of the second electrodes 51 is multiple, and the multiple second electrodes 51 are arranged corresponding to the light-emitting structure 31. The first electrode 41 and the second electrode 51 jointly drive and control whether the light-emitting structure 31 emits light. Exemplarily, the first electrode 41 is a cathode, and the second electrode 51 is an anode.

[0066] The isolation structure 20 can enclose a plurality of opening structures 21. For example, the orthographic projection of the isolation structure 20 on the substrate 10 is a mesh structure. The plurality of light-emitting structures 31 are arranged in the plurality of opening structures 21, that is, the orthographic projection of the light-emitting structure 31 on the substrate 10 is arranged corresponding to the orthographic projection of the opening structure 21 on the substrate 10, and the orthographic projection of the light-emitting structure 31 on the substrate 10 is at least partially located in the orthographic projection of the opening structure 21 on the substrate 10. Furthermore, in the preparation process of the light-emitting functional layer 30, due to the presence of the isolation structure 20, the precision metal mask can be eliminated.

[0067] Specifically, taking the preparation of the red light-emitting structure 31 before the preparation of the green light-emitting structure 31 as an example, since the precision metal mask is eliminated, the red light-emitting material corresponding to the red light-emitting structure 31 will first fall into each opening structure 21, and then the red light-emitting material in a part of the opening structure 21 will be selectively etched away, and the red light-emitting material in a part of the opening structure 21 will be retained to form the red light-emitting structure 31. After that, the green light-emitting material corresponding to the green light-emitting structure 31 will fall into each opening structure 21, and then the green light-emitting material in a part of the opening structure 21 will be selectively etched away, and the green light-emitting material in a part of the opening structure 21 will be retained to form the green light-emitting structure 31.

[0068] Similarly, due to the existence of the isolation structure 20 , the first electrode layer 40 may also include a plurality of first electrodes 41 disposed in the opening structure 21 , that is, the plurality of first electrodes 41 may be disposed corresponding to the plurality of light emitting structures 31 to achieve driving control of the light emitting structures 31 .

[0069] Further, the first electrode 41 may be electrically connected to the isolation structure 20, that is, the isolation structure 20 may include a conductive material, and the first electrode 41 and the conductive material in the isolation structure 20 may be interconnected. Under this design, the power signal corresponding to the first electrode 41 may be transmitted to the first electrode 41 via the isolation structure 20 to meet the transmission needs of the power signal.

[0070] It should be noted that the conductive material in the isolation structure 20 for electrically connecting with the first electrode 41 can be continuously arranged, that is, the effect of each first electrode 41 transmitting the same power signal can be achieved with the help of the isolation structure 20. Alternatively, the conductive material in the isolation structure 20 for electrically connecting with the first electrode 41 can also be intermittent or insulated from each other, that is, at least some of the different first electrodes 41 can also receive or transmit power signals of different voltages with the help of the isolation structure 20, so as to achieve independent or partitioned control of the light-emitting structure 31, and the embodiment of the present application is not limited to this.

[0071] The display panel also includes a first signal line 60, which is used to transmit a corresponding power signal to the first electrode 41. In the related art, the first electrode layer 40 includes only one whole surface of the first electrode 41, and the first signal line 60 for electrically connecting with the first electrode 41 is usually located in the second area A2 and is arranged in a ring structure around the outer periphery of the first electrode 41. This design makes the first electrode 41 occupy too much size at the position of the display panel frame, which is not conducive to achieving a narrow frame effect.

[0072] In the embodiment of the present application, the first signal line 60 is not directly connected to the first electrode 41, but the power signal is transmitted to each first electrode 41 by means of the isolation structure 20. Specifically, since the isolation structure 20 itself is set corresponding to each first electrode 41, and signal transmission can be achieved between the two. Therefore, there is no need to extend the first signal line 60 to the position of each first electrode 41, that is, the first signal line 60 does not need to be set around each first electrode 41, and it is only necessary to set the first signal line 60 along the first direction X on one side of the isolation structure 20 and electrically connect it to the isolation structure 20. In this way, the power signal in the first signal line 60 can be transmitted to each first electrode 41 by means of the isolation structure 20, so as to meet the needs of signal transmission. And since the first signal line 60 is located on one side of the isolation structure 20 along the first direction X, rather than in a ring structure, it helps to reduce the frame size of the display panel and improve the display effect.

[0073] It should be noted that the embodiment of the present application does not limit the specific routing form of the first signal line 60. And according to different actual conditions, the first signal line 60 can be completely located on one side of the isolation structure 20 along the first direction X, or a small number of first signal lines 60 can be located on other sides of the isolation structure 20 along different directions, as long as most of the first signal lines 60 are located on the same side of the isolation structure 20.

[0074] In some embodiments, Figures 1 to 3 As shown, the isolation structure 20 includes a first isolation portion 22 and a second isolation portion 23 which are sequentially stacked in a direction away from the substrate 10 , and the orthographic projection of the first isolation portion 22 on the substrate 10 is located within the orthographic projection of the second isolation portion 23 on the substrate 10 .

[0075] The specific size and shape of the first isolation portion 22 and the second isolation portion 23 are not limited in the embodiment of the present application. For example, the longitudinal section of the isolation structure 20 can be T-shaped. This design helps in the preparation process of the light-emitting functional layer 30 and the first electrode layer 40, making it difficult for the light-emitting material and the electrode material to extend along the side wall of the first isolation portion 22 to the side wall of the second isolation portion 23, thereby realizing the preparation and mutual separation of the light-emitting structure 31 and the first electrode 41 in different opening structures 21 without the need for a fine metal mask.

[0076] The embodiment of the present application does not limit the material composition of the first isolation portion 22 and the second isolation portion 23. The first isolation portion 22 and the second isolation portion 23 may both include conductive materials, or the first isolation portion 22 includes conductive materials, while the second isolation portion 23 includes insulating materials, as long as the first electrode 41 can achieve signal transmission with the aid of the isolation structure 20.

[0077] In addition, at least a portion of the first signal line 60 is located in the second area A2, the first signal line 60 may be completely located in the second area A2, or the first signal line 60 may also partially extend into the first area A1. Similarly, the isolation structure 20 may be completely located in the first area A1, or the isolation structure 20 may also partially extend into the second area A2, and the embodiment of the present application is not limited to this.

[0078] In some embodiments, the first isolation portion 22 includes a conductive material, and the first electrode 41 is electrically connected to the first isolation portion 22 .

[0079] The first signal line 60 can transmit the power signal to the first electrode 41 with the help of the first isolation part 22, wherein the first electrode 41 can be in direct contact with the first isolation part 22, or the first electrode 41 can be electrically connected to the first isolation part 22 with the help of other conductive structures, and the embodiments of the present application are not limited to this.

[0080] In the embodiment of the present application, by providing a conductive material in the first isolation portion 22, the first signal line 60 can transmit the power signal to the first electrode 41 with the help of the first isolation portion 22, thereby meeting the signal transmission requirements. Furthermore, by providing an extension path of the first isolation portion 22 in the first area A1, the first isolation portion 22 can extend to each area in the first area A1, and then the first signal line 60 only needs to be provided on one side of the isolation structure 20 along the first direction X, and there is no need to provide the first signal line 60 around the first area A1, thereby reducing the frame size of the display panel.

[0081] The embodiment of the present application does not limit the positional relationship between the first signal line 60 and the first isolation portion 22. In some embodiments, at least part of the first signal line 60 is in contact with the first isolation portion 22, that is, at least part of the power signal in the first signal line 60 can be directly transmitted to the first isolation portion 22. Further, if the isolation structure 20 also includes other conductive structures electrically connected to the first isolation portion 22, the first signal line 60 can also be in contact with the other conductive structures.

[0082] In some embodiments, see Figure 4The isolation structure 20 further includes a third isolation portion 24 located on a side of the first isolation portion 22 facing the substrate 10 . The third isolation portion 24 includes a conductive material and is electrically connected to the first isolation portion 22 .

[0083] The isolation structure 20 includes at least a first isolation portion 22, a second isolation portion 23, and a third isolation portion 24. The embodiment of the present application does not limit the size and shape of the first isolation portion 22, the second isolation portion 23, and the third isolation portion 24. Exemplarily, the orthographic projection of the first isolation portion 22 on the substrate 10 is located within the orthographic projection of the third isolation portion 24 on the substrate 10, that is, the longitudinal cross-section of the first isolation portion 22, the second isolation portion 23, and the third isolation portion 24 is in an I-shape.

[0084] Similar to the first isolation portion 22, the third isolation portion 24 also includes a conductive material, and the first electrode 41 can directly contact the third isolation portion 24 to achieve electrical connection with the first isolation portion 22 by means of the third isolation portion 24. Optionally, the first electrode 41 is overlapped with the third isolation portion 24. Further, the first electrode 41 can be partially located on the side of the third isolation portion 24 away from the substrate 10, and the provision of the third isolation portion 24 helps to improve the reliability of the electrical connection between the first electrode 41 and the isolation structure 20.

[0085] In some embodiments, the second isolation portion 23 includes a conductive material.

[0086] Similar to the first isolation portion 22, the second isolation portion 23 also includes a conductive material, that is, the second isolation portion 23 can also be used to realize the signal transmission function, wherein the first isolation portion 22 and the second isolation portion 23 can be electrically connected to each other, that is, the second isolation portion 23 is also used to transmit the power signal, or the first isolation portion 22 and the second isolation portion 23 can also be insulated, that is, the second isolation portion 23 is not used to transmit the power signal, and the embodiments of the present application do not limit this.

[0087] Further optionally, the first isolation portion 22 is electrically connected to the second isolation portion 23 , and at least a portion of the first signal line 60 is in contact with the second isolation portion 23 .

[0088] In this case, the first isolation portion 22 can be directly in contact with the second isolation portion 23, and the same electrical signal is transmitted in the first isolation portion 22 and the second isolation portion 23. At this time, the first signal line 60 can be in contact with the second isolation portion 23, and the power signal in the first signal line 60 is transmitted to the first isolation portion 22 through the second isolation portion 23, and then transmitted to the first electrode 41 through the first isolation portion 22, thereby meeting the need for power signal transmission.

[0089] In some embodiments, see Figure 5The isolation structure 20 further includes a first insulating portion 25 disposed between the first isolation portion 22 and the second isolation portion 23 .

[0090] The embodiment of the present application does not limit the size of the first insulating portion 25 relative to the first isolating portion 22 and the second isolating portion 23. For example, the orthographic projection of the first isolating portion 22 on the substrate 10 is located within the orthographic projection of the first isolating portion 25 on the substrate 10, and the orthographic projection of the first isolating portion 25 on the substrate 10 is located within the orthographic projection of the second isolating portion 23 on the substrate 10. This helps to further reduce the risk of the light-emitting material and the electrode material extending from the side wall of the first isolating portion 22 to the side wall of the second isolating portion 23, thereby improving the manufacturing reliability of the display panel.

[0091] Due to the existence of the first insulating portion 25, the first isolation portion 22 and the second isolation portion 23 are in an insulated state, and the power signal in the first isolation portion 22 will not be transmitted to the second isolation portion 23. On this basis, the display panel can transmit other different types of signals with the help of the second isolation portion 23, which helps to reduce the number of internal wirings of the display panel and reduce the difficulty of wiring design. Optionally, the second isolation portion 23 can be used for touch signals.

[0092] In some embodiments, an etching selectivity ratio of the first isolation portion 22 to the second isolation portion 23 is greater than 1.

[0093] The etching selectivity refers to the relative etching rate of one material compared to another material under the same etching conditions. Since the etching selectivity of the first isolation portion 22 relative to the second isolation portion 23 is greater than 1, under the same etching conditions, the etching rate corresponding to the first isolation portion 22 is greater than the etching rate of the second isolation portion 23.

[0094] On this basis, the first isolation portion 22 and the second isolation portion 23 can be arranged to be prepared and formed by the same etching process. This can not only reduce the preparation process of the display panel and improve the preparation efficiency, but also ensure that the orthographic projection of the first isolation portion 22 on the substrate 10 after preparation can be located within the orthographic projection of the second isolation portion 23 on the substrate 10, which has strong practicality.

[0095] In some embodiments, Figure 2 and Figure 3 As shown, the display panel further includes a driving chip IC disposed in the second area A2 and located on one side of the isolation structure 20 along the first direction X, and the first signal line 60 is electrically connected to the driving chip IC.

[0096] The driver chip IC is a driving control element, and the driver chip IC can realize the control of the first electrode 41. Further, the driver chip IC is located in the second area A2 and is located on one side of the isolation structure 20 along the first direction X. On this basis, in order to realize the electrical connection between the driver chip IC and the first electrode 41, the embodiment of the present application adds a first signal line 60 between the driver chip IC and the isolation structure 20, and the first signal line 60 is located between the driver chip IC and the isolation structure 20 along the first direction X. The driver chip IC transmits the corresponding power signal to the first signal line 60, and then transmits it to the isolation structure 20 with the help of the first signal line 60. Finally, the isolation structure 20 transmits the power signal to the first electrode 41 to realize the driving control of the first electrode 41.

[0097] For further information, see Figure 6 In some embodiments, the second area A2 includes a first partition A21 and a second partition A22 located between the driver chip IC and the isolation structure 20, the first partition A21 and the second partition A22 are arranged side by side in the second direction Y, and the first direction X intersects with the second direction Y. The first signal line 60 located in the first partition A21 and the first signal line 60 located in the second partition A22 are insulated from each other.

[0098] The first partition A21 and the second partition A22 are both located between the driver chip IC and the isolation structure 20. The specific positional relationship between the first partition A21 and the second partition A22 is not limited in the embodiment of the present application, as long as the first partition A21 and the second partition A22 are arranged side by side in the second direction Y. Optionally, the first direction X and the second direction Y are arranged perpendicularly.

[0099] The first partition A21 and the second partition A22 are both provided with a first signal line 60. The first partition A21 may have only one first signal line 60, or the first partition A21 may have multiple first signal lines 60. Similarly, the second partition A22 may have only one first signal line 60, or the second partition A22 may have multiple first signal lines 60.

[0100] As can be seen from the foregoing, the first signal lines 60 are all electrically connected to the isolation structure 20, so as to achieve electrical connection with the first electrodes 41 with the help of the isolation structure 20. On this basis, the first signal lines 60 in the first partition A21 and the first signal lines 60 in the second partition A22 are insulated from each other, that is, the partial structure of the isolation structure 20 used for electrical connection with the first signal lines 60 in the first partition A21 and the partial structure of the isolation structure 20 used for electrical connection with the first signal lines 60 in the second partition A22 are insulated from each other, so that the first signal lines 60 in the first partition A21 and the first signal lines 60 in the second partition A22 can respectively control different first electrodes 41, thereby helping to improve the control accuracy.

[0101] In some embodiments, Figure 6 As shown, the isolation structure 20 includes a first isolation structure 26 and a second isolation structure 27 that are insulated, and the first isolation structure 26 and the second isolation structure 27 are located in different subareas of the first area A1. The first isolation structure 26 and the second isolation structure 27 have different resistances within the same orthographic projection area, and different first signal lines 60 are electrically connected to the first isolation structure 26 and the second isolation structure 27, respectively.

[0102] The first isolation structure 26 and the second isolation structure 27 are insulated from each other, and the embodiment of the present application does not limit the size and shape of the first isolation structure 26 and the second isolation structure 27. For example, the first isolation structure 26 can be in a strip or mesh structure, and the second isolation structure 27 is the same.

[0103] Due to factors such as the difference in the extension length and shape of the first isolation structure 26 and the second isolation structure 27, the resistor corresponding to the first isolation structure 26 is different from the resistor corresponding to the second isolation structure 27. On this basis, if the power signal of the same voltage magnitude is input to the first isolation structure 26 and the second isolation structure 27, the magnitudes of the power signal received by different first electrodes 41 corresponding to the first isolation structure 26 and the second isolation structure 27 are different, which easily causes the display panel to have uneven display, which is not conducive to the display effect.

[0104] On this basis, the embodiment of the present application electrically connects different first signal lines 60 to the first isolation structure 26 and the second isolation structure 27 respectively. The driving chip IC can control the different first signal lines 60 to input different voltages to the first isolation structure 26 and the second isolation structure 27 respectively according to the resistance of the first isolation structure 26 and the second isolation structure 27, thereby ensuring that the different first electrodes 41 corresponding to the first isolation structure 26 and the second isolation structure 27 can receive accurate voltage signals, thereby improving the control accuracy of the first electrode 41 and improving display uniformity.

[0105] It should be noted that the embodiment of the present application does not limit the relationship between the resistance value of the first isolation structure 26 and the second isolation structure 27. Optionally, the first isolation structure 26 and the second isolation structure 27 have different orthographic projection areas on the substrate 10, so that the resistance values ​​between the two are different. Specifically, under normal circumstances, the larger the orthographic projection area on the substrate 10, the larger the corresponding resistance value; the smaller the orthographic projection area on the substrate 10, the smaller the corresponding resistance value.

[0106] In other embodiments, the cross-sectional dimensions of the first isolation structure 26 and the second isolation structure 27 are different, so that the resistance values ​​therebetween are different. Specifically, generally, the larger the cross-sectional dimension, the smaller the resistance value, and the smaller the cross-sectional dimension, the larger the resistance value.

[0107] In addition, the present embodiment does not limit the insulation method between the first isolation structure 26 and the second isolation structure 27. Optionally, the first isolation structure 26 and the second isolation structure 27 are arranged at intervals. Further optionally, the isolation structure 20 further includes an insulation structure 28 located between the first isolation structure 26 and the second isolation structure 27.

[0108] In some embodiments, Figure 3 As shown, the display panel further includes a first encapsulation layer 71 disposed on a side of the first electrode layer 40 away from the substrate 10 , and the first encapsulation layer 71 includes a plurality of first encapsulation portions 711 disposed in the opening structure 21 .

[0109] The first encapsulation layer 71 is located on the side of the first electrode layer 40 away from the substrate 10, that is, on the side of the light emitting surface of the light emitting structure 31. The first encapsulation layer 71 can play a role in encapsulating and protecting the light emitting structure 31. Due to the existence of the isolation structure 20, the prepared first encapsulation layer 71 can have a plurality of first encapsulation parts 711 corresponding to the light emitting structure 31 and located in the opening structure 21, and each first encapsulation part 711 can play a role in independently encapsulating each light emitting structure 31, thereby improving the encapsulation and protection effect of the light emitting structure 31.

[0110] The present embodiment does not limit the material composition of the first encapsulation layer 71. Exemplarily, the first encapsulation layer 71 includes an inorganic material.

[0111] In some embodiments, the display panel further includes a second encapsulation layer 72 located on a side of the first encapsulation layer 71 facing away from the substrate 10 , and a third encapsulation layer 73 located on a side of the second encapsulation layer 72 facing away from the substrate 10 .

[0112] The first encapsulation layer 71, the second encapsulation layer 72, and the third encapsulation layer 73 can form a thin film encapsulation structure together, thereby further reducing the risk of water and oxygen intruding into the light-emitting structure 31 and improving the reliability of the display panel. The material composition of the second encapsulation layer 72 and the third encapsulation layer 73 is not limited in the embodiment of the present application. Optionally, the first encapsulation layer 71 and the third encapsulation layer 73 both include inorganic materials, and the second encapsulation layer 72 includes organic materials, so that the first encapsulation layer 71 and the second encapsulation layer 72 can limit the second encapsulation layer 72 to a certain extent, thereby improving the reliability of the structure.

[0113] Different from the first encapsulation layer 71 , the second encapsulation layer 72 and the third encapsulation layer 73 may be a full-surface structure, that is, the second encapsulation layer 72 and the orthographic projection of the second encapsulation layer 72 on the substrate 10 may simultaneously cover the orthographic projections of multiple light-emitting structures 31 on the substrate 10 .

[0114] In some embodiments, see Figure 2 , Figure 3 as well as Figure 7 The display panel further includes a blocking portion 90 disposed in the second area A2 , and an orthographic projection of the blocking portion 90 on the substrate 10 is offset from an orthographic projection of the first signal line 60 on the substrate 10 .

[0115] The blocking portion 90 is located in the second area A2. Normally, the blocking portion 90 is located at the edge of the display panel. As can be seen from the foregoing content, the second encapsulation layer 72 includes organic materials, and some of the organic materials included in the second encapsulation layer 72 usually have a certain fluidity. In order to reduce the risk of overflow of the organic material in the second encapsulation layer 72, a blocking portion 90 is usually provided at the edge of the display panel. The presence of the blocking portion 90 can reduce the risk of overflow and improve the reliability of the display panel.

[0116] Furthermore, since the first signal line 60 is only located on one side of the isolation structure 20 along the first direction X, rather than being arranged around the circumference of the isolation structure 20, the first signal line 60 does not exist at some positions in the second area A2. On this basis, the orthographic projection of the blocking portion 90 on the substrate 10 can be staggered with the orthographic projection of the first signal line 60 on the substrate 10, that is, the first signal line 60 will not affect the layout design of the blocking portion 90, which helps to reduce the risk of physical interference between the two.

[0117] The embodiment of the present application does not limit the specific arrangement of the blocking portion 90. Optionally, a portion of the structure in the blocking portion 90 may be located along the second direction Y on at least one side of the isolation structure 20.

[0118] In some embodiments, the orthographic projections of the first encapsulation layer 71 and the barrier portion 90 on the substrate 10 do not overlap.

[0119] Due to the existence of the isolation structure 20, the first encapsulation portion 711 in the first encapsulation layer 71 will fall into the opening structure 21 and be arranged corresponding to the light emitting structure 31. Therefore, most of the first encapsulation layer 71 will be located in the first area A1, and the first encapsulation layer 71 will be terminated near the junction of the first area A1 and the second area A2. The second encapsulation layer 72 usually covers more than the first area A1 and enters the second area A2. Therefore, in the second area A2, the first encapsulation layer 71 has little effect on the limiting position of the second encapsulation layer 72.

[0120] On this basis, the second encapsulation layer 72 needs to be limited by other structures in the display panel except the first encapsulation layer 71. Since the blocking part 90 and the first encapsulation layer 71 are not overlapped on the substrate 10, the existence of the blocking part 90 can limit the second encapsulation layer 72 and reduce the risk of overflow of the second encapsulation layer 72.

[0121] In some embodiments, the third encapsulation layer 73 is located on a side of the barrier portion 90 facing away from the substrate 10 , and covers at least a portion of the barrier portion 90 .

[0122] Unlike the first encapsulation layer 71, the third encapsulation layer 73 may be a whole-surface structure, and the third encapsulation layer 73 may be partially located in the second area A2. On this basis, in the embodiment of the present application, the third encapsulation layer 73 covers at least part of the structure of the barrier 90, so that the third encapsulation layer 73 can cooperate with the barrier 90 to limit the second encapsulation layer 72.

[0123] In some embodiments, see Figure 7 The display panel further includes a gate driving circuit D1 located in the second area A2. The gate driving circuit D1 and the blocking portion 90 are both located on the substrate 10. The gate driving circuit D1 and the blocking portion 90 are adjacently arranged.

[0124] In some embodiments, see Figure 8 The display panel further includes a gate driving circuit D1 located in the second area A2, and the blocking portion 90 is at least partially located on a side of the gate driving circuit D1 away from the substrate 10. For example, the entire blocking portion 90 is located on a side of the gate driving circuit D1 away from the substrate 10, or a portion of the blocking portion 90 is located on a side of the gate driving circuit D1 away from the substrate 10, and another portion of the blocking portion 90 is located on the substrate 10.

[0125] There may be a plurality of blocking portions 90 , and the blocking portion 90 closest to the first area A1 is at least partially located on a side of the gate driving circuit D1 facing away from the substrate 10 .

[0126] The gate driving circuit D1 is located in the second area A2. The gate driving circuit D1 may include a multi-stage shift register cascaded with each other. The multi-stage shift register may sequentially output a conduction level to sequentially scan each row of pixel circuits located in the first area A1 to meet display requirements.

[0127] In the related art, considering the fluidity of the second packaging layer 72, the blocking portion 90 usually needs to be spaced a large distance from the first area A1 so that the blocking portion 90 with a specific height dimension can effectively block the second packaging layer 72. Therefore, the blocking portion 90 is usually located on the side of the gate driving circuit D1 away from the first area A1, which will also affect the frame size of the display panel and is not conducive to the display effect.

[0128] In the embodiment of the present application, due to the presence of the isolation structure 20, part of the second encapsulation layer 72 will fall into the opening structure 21, so the opening structure 21 can have a certain overflow effect on the second encapsulation layer 72. On this basis, even if the distance between the blocking portion 90 and the first area A1 in the first direction X is reduced, the blocking portion 90 can still effectively block the second encapsulation layer 72 and reduce the overflow risk. Therefore, in the embodiment of the present application, the blocking portion 90 is set to be at least partially located on the side of the gate drive circuit D1 away from the substrate 10.

[0129] In this design, the blocking portion 90 can effectively block the second encapsulation layer 72, reduce the risk of overflow of the second encapsulation layer 72, and improve the encapsulation reliability. At the same time, this helps to reduce the distance between the blocking portion 90 and the first area A1, thereby reducing the influence of the blocking portion 90 on the frame size and further improving the narrow frame effect.

[0130] In some embodiments, the display panel further includes a second insulating portion 91 between the blocking portion 90 and the gate driving circuit D1. The second insulating portion 91 can cover at least a portion of the structure of the gate driving circuit D1, so that after the gate driving circuit D1 is prepared, the second insulating portion 91 can isolate the gate driving circuit D1 from the air, and in the subsequent preparation process of the metal layer, etc., the second insulating portion 91 can also protect the gate driving circuit D1, reduce the risk of over-engraving of the gate driving circuit D1, and improve reliability.

[0131] Furthermore, in the implementation of the present application, the first insulating portion 91 can insulate the blocking portion 90 from the gate driving circuit D1, thereby improving the operational reliability of the gate driving circuit D1. The second insulating portion 91 can be completely located on the side of the gate driving circuit D1 away from the substrate 10, or the second insulating portion 91 can be partially located on the side of the gate driving circuit D1 away from the first area A1.

[0132] In addition, when the blocking portion 90 is located on the side of the gate driving circuit D1 away from the substrate 10, the second insulating portion 91 can increase the distance between the blocking portion 90 and the substrate 10, thereby reducing the required height dimension of the blocking portion 90 and the corresponding material cost, which has strong practicality.

[0133] In some embodiments, the display panel also includes a pixel definition layer 80 disposed on the side of the isolation structure 20 facing the substrate 10 , the pixel definition layer 80 includes a pixel defining portion 81 and a pixel opening 82 enclosed by the pixel defining portion 81 , and the light emitting structure 31 is at least partially located in the pixel opening 82 .

[0134] The pixel definition layer 80 includes a pixel defining portion 81 and a pixel opening 82. The pixel opening 82 is arranged corresponding to the opening structure 21. For example, the orthographic projection of the pixel opening 82 on the substrate 10 can be located within the orthographic projection of the opening structure 21 on the substrate 10, and the light-emitting structure 31 and part of the structure in the first electrode 41 can be located within the pixel opening 82.

[0135] In some embodiments, a portion of the pixel definition layer 80 is located on a side of the barrier 90 facing away from the substrate 10 , that is, the pixel definition layer 80 needs to extend from the first area A1 to the second area A2 .

[0136] As can be seen from the above content, due to the existence of the isolation structure 20, the first encapsulation layer 71 will be terminated near the junction of the first area A1 and the second area A2, so the first encapsulation layer 71 cannot effectively block the second encapsulation layer 72 in the second area A2. On this basis, the pixel definition layer 80 extends from the first area A1 to the second area A2 and partially covers the blocking portion 90, that is, the pixel definition layer 80 can block and limit the second encapsulation layer 72 in the second area A2, ensuring the reliability of the internal structure of the display panel.

[0137] Second, see Fig. 9 , an embodiment of the present application provides a display device, comprising a display panel in any of the aforementioned embodiments.

[0138] It should be noted that the display device provided in the embodiment of the present application has the beneficial effects of the display panel in any of the aforementioned embodiments. For details, please refer to the aforementioned description of the beneficial effects of the display panel, and the embodiment of the present application will not be repeated.

[0139] Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted for facilitating the understanding of this application and are not intended to limit the present invention. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of protection of this application shall still be subject to the scope defined in the attached claims.

[0140] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel has a first area and a second area surrounding the first area, and the display panel includes: substrate; An isolation structure, disposed on one side of the substrate and located in the first area, the isolation structure encloses a plurality of opening structures that are spaced apart, and the isolation structure comprises a conductive material; A light-emitting functional layer is disposed on one side of the substrate and located in the first area, wherein the light-emitting functional layer includes a plurality of light-emitting structures disposed in the plurality of opening structures, and at least one light-emitting structure is disposed in one of the opening structures; A first electrode layer is arranged on a side of the light-emitting functional layer away from the substrate, the first electrode layer comprising a plurality of first electrodes which are arranged in the opening structure and are electrically connected to the conductive material of the isolation structure; A first signal line is located on one side of the isolation structure along a first direction. The first signal line is electrically connected to the conductive material of the isolation structure so as to transmit a power signal provided by the first signal line to the first electrode with the aid of the isolation structure. The first direction is parallel to the plane where the substrate is located.

2. The display panel according to claim 1, characterized in that: The isolation structure comprises a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, wherein the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate; Preferably, the first isolation portion comprises a conductive material, and the first electrode is electrically connected to the first isolation portion; Preferably, at least part of the first signal line is in contact with the first isolation portion; Preferably, the isolation structure further comprises a third isolation portion located on a side of the first isolation portion facing the substrate, the third isolation portion comprises a conductive material and is electrically connected to the first isolation portion; Preferably, the first electrode and the third isolation portion are overlapped.

3. The display panel according to claim 2, characterized in that: The second isolation portion includes a conductive material; Preferably, the first isolation portion is electrically connected to the second isolation portion, and at least part of the first signal line is in contact with the second isolation portion; Preferably, the isolation structure further comprises a first insulating portion disposed between the first isolation portion and the second isolation portion; Preferably, an etching selectivity ratio of the first isolation portion to the second isolation portion is greater than 1.

4. The display panel according to claim 1, characterized in that: It also includes a driving chip disposed in the second area and located on one side of the isolation structure along the first direction, and the first signal line is electrically connected to the driving chip; Preferably, the second area includes a first partition and a second partition located between the driving chip and the isolation structure, the first partition and the second partition are arranged side by side in a second direction, and the first direction intersects with the second direction; The first signal line in the first partition and the first signal line in the second partition are insulated from each other.

5. The display panel according to claim 1 or 4, characterized in that: The isolation structure includes a first isolation structure and a second isolation structure that are insulated, the first isolation structure and the second isolation structure are located in different subareas within the first area, and the first isolation structure and the second isolation structure have different resistances in the same orthographic projection area; The first signal lines are electrically connected to the first isolation structure and the second isolation structure respectively; Preferably, the first isolation structure and the second isolation structure have different orthographic projection areas on the substrate; and / or, The first isolation structure and the second isolation structure have different cross-sectional dimensions; Preferably, the first isolation structure and the second isolation structure are spaced apart from each other; Preferably, the isolation structure further includes an insulating structure located between the first isolation structure and the second isolation structure.

6. The display panel according to claim 1, characterized in that: It also includes a first packaging layer disposed on a side of the first electrode layer away from the substrate, the first packaging layer including a plurality of first packaging parts separately disposed in the opening structure; Preferably, the display panel further comprises a second encapsulation layer located on a side of the first encapsulation layer away from the substrate, and a third encapsulation layer located on a side of the second encapsulation layer away from the substrate; Preferably, the first encapsulation layer and the third encapsulation layer include inorganic materials, and the second encapsulation layer includes organic materials.

7. The display panel according to claim 6, characterized in that: It also includes a blocking portion disposed in the second area, wherein the blocking portion is disposed at a position offset from the orthographic projection of the first signal line on the substrate; Preferably, the first encapsulation layer and the blocking portion have orthographic projections on the substrate that do not overlap; Preferably, the third encapsulation layer is located on a side of the barrier portion facing away from the substrate, and covers at least a portion of the structure of the barrier portion.

8. The display panel according to claim 7, characterized in that: It also includes a gate driving circuit located in the second area, wherein the blocking portion is at least partially located on a side of the gate driving circuit away from the substrate, or the blocking portion is adjacent to the gate driving circuit; Preferably, the display panel further includes a second insulating portion located between the blocking portion and the gate driving circuit.

9. The display panel according to claim 6, characterized in that: It also includes a pixel definition layer disposed on a side of the isolation structure facing the substrate, the pixel definition layer includes a pixel definition portion and a pixel opening formed by the pixel definition portion, and the light emitting structure is at least partially located in the pixel opening; Preferably, part of the pixel definition layer is located on a side of the blocking portion facing away from the substrate.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 9.

Images