Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate; the organic light-emitting device layer is arranged on one side of the substrate; the packaging layer is used for packaging the organic light-emitting device layer, and the packaging layer comprises at least one polymer electrolyte layer; the bonding metal part is arranged between the substrate and the packaging layer, the bonding metal part is connected with the polymer electrolyte layer in an electrostatic bonding mode, and the bonding metal part and the polymer electrolyte layer form a bonding area. The polymer electrolyte layer and the bonding metal part are connected in an electrostatic bonding mode to form a sealed bonding area, so that the packaging effect can be ensured, and water and oxygen are prevented from invading. Meanwhile, the polymer electrolyte layer has certain flexibility, so that the polymer electrolyte layer can be flexibly bent and stretched, the problem that the packaging layer has defects due to mechanical stress and a humidity environment when the display panel, especially a flexible display panel, is bent and stretched can be solved, and the durability and the stability of the display panel are improved.

Description

Technical Field

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

[0002] OLED is a display lighting technology that has gradually developed in recent years. It is widely used in the display industry due to its advantages of high response, high contrast, flexibility, etc. Flexible OLED technology has broad application prospects in the fields of smart phones, wearable devices, automotive displays and lighting due to its advantages of being thin, flexible and bendable.

[0003] OLED devices will be corroded and damaged under the action of water vapor and oxygen, so thin-film encapsulation (TFE) is widely used in the production process of OLED displays. Traditional thin-film encapsulation is a multi-layer stacking method of inorganic layer / organic layer / inorganic layer. The inorganic layer plays a role in blocking water and oxygen, and the organic layer plays a role in flattening, covering particles and neutralizing the stress of the inorganic layer. However, the traditional thin-film encapsulation structure is prone to defects in flexible OLED displays because the encapsulation layer is easily damaged by mechanical stress and humidity when the inorganic layer is bent and stretched. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a display device, which can solve the problem that the encapsulation layer of the display panel is defective due to mechanical stress and humidity environment when the display panel is bent and stretched, and improve the durability and stability of the display panel.

[0005] In a first aspect, an embodiment of the present application provides a display panel, comprising: a substrate; an organic light-emitting device layer, arranged on one side of the substrate; an encapsulation layer, used to encapsulate the organic light-emitting device layer, the encapsulation layer comprising at least one polymer electrolyte layer; a bonding metal part, arranged between the substrate and the encapsulation layer, the bonding metal part and the polymer electrolyte layer being connected by electrostatic bonding, and the bonding metal part and the polymer electrolyte layer forming a bonding area.

[0006] In a second aspect, an embodiment of the present application provides a display device, comprising the display panel of the first aspect of the present application.

[0007] Compared with the related art, the display panel provided by the embodiment of the present invention includes at least one polymer electrolyte layer, and a bonding metal part is provided between the substrate and the encapsulation layer. The polymer electrolyte layer can be connected to the bonding metal part by electrostatic bonding. The bonding metal part and the polymer electrolyte layer bonded together form a bonding area. This bonding area is a sealing structure that can ensure the encapsulation effect and prevent water and oxygen from invading. At the same time, the polymer electrolyte layer itself has a certain degree of flexibility, so the polymer electrolyte layer can be flexible and bendable, which can solve the problem of defects caused by mechanical stress and humidity environment in the encapsulation layer of the display panel, especially the flexible display panel, when being bent and stretched, and improve the durability and stability of the display panel.

[0008] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 A schematic diagram showing a partial structure of a display panel provided in an embodiment of the present application is shown;

[0011] Figure 2 A schematic diagram of a top view structure of a display panel provided in an embodiment of the present application is shown;

[0012] Figure 3 Another schematic diagram of a top view of the structure of a display panel provided in an embodiment of the present application is shown;

[0013] Figure 4 Another schematic diagram of a top view of the display panel provided in an embodiment of the present application is shown;

[0014] Figure 5 Another partial structural schematic diagram of a display panel provided by an embodiment of the present application is shown;

[0015] Figure 6 Another schematic diagram of a top view of the display panel provided in an embodiment of the present application is shown;

[0016] Figure 7 Another partial structural schematic diagram of a display panel provided in an embodiment of the present application is shown;

[0017] Figure 8 Another partial structural schematic diagram of a display panel provided in an embodiment of the present application is shown;

[0018] Fig. 9 Another partial structural schematic diagram of a display panel provided in an embodiment of the present application is shown;

[0019] Description of reference numerals:

[0020] AA, display area; NA, non-display area;

[0021] 10. Substrate; 20. Organic light-emitting device layer; 30. Encapsulation layer; 31. Polymer electrolyte layer; 32. First layer; 33. Second layer; 34. Inorganic layer; 40. Bonding metal part; 41. First closed loop; 42. Second closed loop; 50. Bonding area. DETAILED DESCRIPTION

[0022] 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 configured to explain the present application and are not configured 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.

[0023] 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 existence of other identical elements in the process, method, article or device including the elements.

[0024] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0025] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0026] The term "connect" may mean "electrically connected" or "not electrically connected through an intermediate transistor". The term "insulation" may mean "electrically insulating" or "electrically isolated". The term "drive" may mean "control" or "operate". The term "part" may mean "local". The term "pattern" may mean "component". The term "end" may mean "end segment" or "end edge". The display panel may be a display device or a module / part of a display device.

[0027] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0028] The present application provides a display panel and a display device. Figures 1 to 9 Various embodiments of the display panel are described in detail.

[0029] The following first introduces the display panel provided by the embodiment of the present application. The display panel provided by the embodiment of the present application may be an OLED display panel.

[0030] See also Figure 1 , Figure 1 It is a schematic diagram of a partial structure of a display panel provided by an embodiment of the present invention.

[0031] An embodiment of the present application provides a display panel, including: a substrate 10; an organic light-emitting device layer 20, which is arranged on one side of the substrate 10; an encapsulation layer 30, which is used to encapsulate the organic light-emitting device layer 20, and the encapsulation layer 30 includes at least one polymer electrolyte layer 31; a bonding metal part 40, which is arranged between the substrate 10 and the encapsulation layer 30, and the bonding metal part 40 is connected to the polymer electrolyte layer 31 by electrostatic bonding, and the bonding metal part 40 and the polymer electrolyte layer 31 form a bonding area 50.

[0032] The substrate 10 in the embodiment of the present application can be made of glass or other materials, or can be a flexible material, for example, it can be made of one or more light-transmitting materials such as polyimide (PI), polyethylene naphthalate twoformic acid glycol ester (PEN) or polyethylene terephthalate (PET). The substrate 10 can provide buffering, protection or support for the display panel.

[0033] Optionally, a driving circuit is provided on one side surface of the substrate 10. Exemplarily, the driving circuit includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source electrode and a drain electrode. The driving circuit is connected to the organic light emitting device layer 20 and controls the light emission intensity of the organic light emitting device layer 20.

[0034] The organic light emitting device layer 20 is disposed on one side of the substrate 10 . The organic light emitting device layer 20 can emit light and display under the drive of an electrical signal of a driving circuit, and the emitted light can pass through the encapsulation layer 30 .

[0035] Optionally, the organic light-emitting device layer 20 includes an electrode and at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting structure layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

[0036] The encapsulation layer 30 is disposed on a side of the organic light-emitting device layer 20 away from the substrate 10 , and is used to encapsulate the organic light-emitting device layer 20 to prevent water and oxygen from invading the organic light-emitting device layer 20 and affecting the display.

[0037] The encapsulation layer 30 of the embodiment of the present application includes at least one polymer electrolyte layer 31, and a bonding metal part 40 is provided between the substrate 10 and the encapsulation layer 30. After power is applied in the display panel preparation process, the polymer electrolyte layer 31 can be connected to the bonding metal part 40 by electrostatic bonding. The bonding metal part 40 and the polymer electrolyte layer 31 bonded together form a bonding area 50. This bonding area 50 is a sealing structure that can ensure the encapsulation effect and prevent water and oxygen from invading. At the same time, the polymer electrolyte layer 31 itself has a certain degree of flexibility, so the polymer electrolyte layer 31 can be flexible and bendable, which can solve the problem of defects caused by mechanical stress and humidity environment in the encapsulation layer 30 of the display panel, especially the flexible display panel, when being bent and stretched, and improve the durability and stability of the display panel.

[0038] Please continue reading Figure 1 In some embodiments, the organic light-emitting device layer 20 includes a plurality of light-emitting units distributed in an array, and the bonding metal part 40 is disposed on the periphery of the light-emitting unit.

[0039] The multiple light-emitting units of the embodiments of the present application may include light-emitting units of multiple colors, for example, red light-emitting units, green light-emitting units, and blue light-emitting units. The light-emitting units of different colors are arranged according to predetermined rules, and the present application does not impose any restrictions on the specific arrangement rules.

[0040] The bonding metal part 40 is disposed outside the region formed by the plurality of light-emitting units. The bonding metal part 40 encloses the region formed by the plurality of light-emitting units, thereby reducing the impact on the organic light-emitting device layer 20 and simplifying the preparation process.

[0041] The bonding metal part 40 in the embodiment of the present application can be arranged in the space between the light-emitting units to form a more rigorous sealing structure, and the present application does not impose any limitation on this.

[0042] Please also read Figure 2 and Figure 3 In some embodiments, the bonding metal portion 40 is in a continuous and closed shape around the light emitting unit.

[0043] The shape of the bonding metal part 40 determines the shape of the bonding area 50. If the bonding metal part 40 is continuously closed around the light-emitting unit, the bonding area 50 formed by the bonding metal part 40 and the polymer electrolyte layer 31 is continuously closed, which can improve the sealing effect.

[0044] The continuous closed bonding metal part 40 may have a variety of shapes, and may be a regular shape, such as a regular closed circular ring, a closed square ring, etc. In order to increase the area of ​​the bonding area 50, the continuous closed shape may be formed by enclosing a curve with multiple bends. In some embodiments, the bonding metal part 40 may also have an irregular closed ring shape, as long as the bonding metal part 40 is continuous from beginning to end, and the present application is not limited thereto.

[0045] See also Figure 4 The bonding metal part 40 may also be an open shape, and a plurality of bonding metal parts 40 are arranged at intervals. When the bonding metal parts 40 are not closed, the packaging layer is directly bonded to the substrate 10 in the gaps between the bonding metal parts 40 to ensure the packaging effect, but the present application is not limited thereto.

[0046] Please continue to read Figure 2 and Figure 4 In some embodiments, in the first direction, the width of the bonding area 50 is 10 μm to 300 μm; the first direction is the direction from the center of the substrate 10 to the edge of the substrate 10 .

[0047] In order to ensure the packaging effect, the bonding area 50 needs to have a certain width in the first direction. In the embodiment of the present application, the width of the bonding area 50 in the first direction is within the above range, which can enable the display panel to have a better ability to resist water and oxygen. Figure 3 and Figure 4 , the direction of the arrow is a first direction illustrated in the embodiment of the present application.

[0048] Exemplarily, the width of the bonding area 50 is 10μm, 20μm, 30μm, 40μm, 50μm, 60μm, 70μm, 80μm, 90μm, 100μm, 110μm, 120μm, 130μm, 140μm, 150μm, 160μm, 170μm, 180μm, 190μm, 200μm, 210μm, 220μm, 230μm, 240μm, 250μm, 260μm, 270μm, 280μm, 290μm, 300μm or a range consisting of any two of the above values.

[0049] The widths of the bonding metal portion 40 in the closed ring-shaped local area may be the same or different, and the present application does not impose any limitation on this.

[0050] Please also read Figure 5 and Figure 6 In some embodiments, the bonding metal portion 40 in a continuous closed shape includes a plurality of closed loops to form a plurality of bonding regions 50 , and the plurality of closed loops are arranged at intervals.

[0051] Multiple closed ring-shaped bonding metal parts 40 can form multiple bonding areas 50, forming multiple lines of defense against water and oxygen invasion. Even if cracks appear on the outer closed ring-shaped bonding metal part 40, the inner closed ring-shaped bonding metal part 40 continues to function. The probability of cracks occurring simultaneously on the same line in a certain direction is extremely low. Therefore, the multiple lines of defense in the embodiment of the present application can basically achieve effective blocking of water and oxygen.

[0052] The shapes of the multiple closed ring-shaped bonding metal parts 40 can be the same or different. For example, the multiple closed ring-shaped bonding metal parts 40 can all be closed circular rings, or a combination of circular rings and square rings. This application does not impose any restrictions on this.

[0053] The widths of the multiple closed-loop bonding metal parts 40 in the first direction may be the same or different. Figure 5 and Figure 6The closed loop includes a first closed loop 41 and a second closed loop 42. The first closed loop 41 is located outside the second closed loop 42. The width of the first closed loop 41 in the first direction is greater than the width of the second closed loop 42 in the first direction. The first direction is the direction from the center of the substrate 10 to the edge of the substrate 10. Figure 6 , the direction of the arrow is a first direction illustrated in the embodiment of the present application.

[0054] In the embodiment of the present application, the first closed loop 41 is located on a side closer to the organic light-emitting device layer 20 relative to the second closed loop 42. The first closed loop 41 is the last line of defense against the invasion of water and oxygen. Therefore, preferably, the width of the first closed loop 41 in the first direction is greater than the width of the second closed loop 42 in the first direction, which is conducive to forming an effective line of defense against water and oxygen.

[0055] In the present application, the first closed loop 41 and the second closed loop 42 are only used to illustrate the relative positions of the closed loops. There may be more closed loops between the first closed loop 41 and the second closed loop 42, or the second closed loop 42 may have more closed loops on the side away from the first closed loop 41, such as a third closed loop (not shown), a fourth closed loop (not shown), etc. The relative sizes of the widths of the multiple closed loop-shaped bonding metal parts 40 in the first direction may be set as needed, and the present application does not limit this.

[0056] Preferably, the closed loop bonding metal portion 40 closer to the organic light emitting device layer 20 has the largest width in the first direction. In some embodiments, the width of the first closed loop 41 in the first direction is 50 μm to 300 μm.

[0057] Exemplarily, the width of the first closed loop 41 in the first direction is 50μm, 60μm, 70μm, 80μm, 90μm, 100μm, 110μm, 120μm, 130μm, 140μm, 150μm, 160μm, 170μm, 180μm, 190μm, 200μm, 210μm, 220μm, 230μm, 240μm, 250μm, 260μm, 270μm, 280μm, 290μm, 300μm or a range consisting of any two of the above values.

[0058] The first closed loop 41 has a larger width in the first direction, which can form a larger bonding area 50, and is conducive to forming a tight defense line against water and oxygen intrusion.

[0059] See also Figure 1In some embodiments, the thickness of the bonding metal part 40 in the direction from the substrate 10 to the encapsulation layer 30 is 10 nm to 100 nm; the thickness of the polymer electrolyte layer 31 in the direction from the substrate 10 to the encapsulation layer 30 is 50 μm to 300 μm.

[0060] The bonding metal part 40 is a dense metal accumulation, which itself has excellent resistance to water and oxygen intrusion. The thickness of the bonding metal part 40 in the direction from the substrate 10 to the encapsulation layer 30 is within the above range. On the one hand, it can resist water and oxygen, and on the other hand, it can be bonded with the polymer electrolyte layer 31 to improve the bonding strength, thereby improving the sealing effect. Exemplarily, the thickness of the bonding metal part 40 in the direction from the substrate 10 to the encapsulation layer 30 is 10nm, 20nm, 30nm, 40nm, 50nm, 60nm, 70nm, 80nm, 90nm, 100nm or a range consisting of any two of the above values.

[0061] The thickness of the polymer electrolyte layer 31 in the direction from the substrate 10 to the encapsulation layer 30 is 50 μm to 300 μm, which can effectively form an effective layer to resist water and oxygen invasion. Exemplarily, the thickness of the polymer electrolyte layer 31 in the direction from the substrate 10 to the encapsulation layer 30 can be 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, 160 μm, 170 μm, 180 μm, 190 μm, 200 μm, 210 μm, 220 μm, 230 μm, 240 μm, 250 μm, 260 μm, 270 μm, 280 μm, 290 μm, 300 μm or a range consisting of any two of the above values.

[0062] In some embodiments, the transmittance a of the polymer electrolyte layer 31 satisfies a≥90%, and the water resistance b satisfies 10 -3 g / cm 2 ~10 -4 g / cm 2 .

[0063] In order to achieve a better light transmission effect of the display panel, the transmittance a of the polymer electrolyte layer 31 in the embodiment of the present application needs to meet a≥90%. At the same time, in order to achieve a better ability to resist water and oxygen, the water resistance b of the polymer electrolyte layer 31 in the embodiment of the present application needs to meet 10 -3 g / cm 2 ~10 -4 g / cm 2 .

[0064] See also Fig. 9In some embodiments, the encapsulation layer 30 includes an inorganic layer 34, and the thickness of the inorganic layer 34 is less than the thickness of the polymer electrolyte layer 31. In the embodiment of the present application, in addition to the polymer electrolyte layer 31, the encapsulation layer 30 may also include an inorganic layer 34, and the inorganic layer 34 has a dense structure and can have a good sealing effect. In order to ensure the bendable performance, the thickness of the inorganic layer 34 in the embodiment of the present application is less than the thickness of the polymer electrolyte layer 31.

[0065] The embodiment of the present application does not limit the relative positions of the inorganic layer 34 and the polymer electrolyte layer 31 . The inorganic layer 34 may be located on the side of the polymer electrolyte layer 31 facing away from the substrate 10 , or the polymer electrolyte layer 31 may be located on the side of the inorganic layer 34 facing away from the substrate 10 .

[0066] Please also read Figure 7 and Figure 8 In some embodiments, the polymer electrolyte layer 31 includes a first layer 32 and a second layer 33 . The first layer 32 is on a side close to the substrate 10 , and the thickness of the first layer 32 is greater than the thickness of the second layer 33 .

[0067] In the direction from the substrate 10 to the encapsulation layer 30, the first layer 32 is located on a side closer to the organic light-emitting device layer 20 relative to the second layer 33. The first layer 32 is the last line of defense against the invasion of water and oxygen. Therefore, the thickness of the first layer 32 is greater than that of the second layer 33, which is conducive to forming an effective line of defense against water and oxygen near the light-emitting unit.

[0068] In the present application, the first layer 32 and the second layer 33 are only used to illustrate the relative positions of the polymer electrolyte layer 31. There may be more polymer electrolyte layers 31 between the first layer 32 and the second layer 33, or there may be more polymer electrolyte layers 31, such as the third layer, the fourth layer, etc., in the second layer 33 away from the first layer 32. The relative thickness of the multiple polymer electrolyte layers 31 in the direction from the substrate 10 to the encapsulation layer 30 can be set as needed, and the present application does not limit this.

[0069] See also Figures 2 to 4 In some embodiments, the display panel includes a display area AA and a non-display area NA, the non-display area NA at least partially surrounds the display area AA, and the bonding metal portion 40 is disposed in the non-display area NA.

[0070] In the embodiment of the present application, the bonding metal part 40 is arranged in the non-display area, and the bonding area 50 is located in the non-display area. Such arrangement can reduce the occupation of the display area and improve the display efficiency of the display area.

[0071] As an example, a plurality of display areas AA are distributed in an array, and non-display areas NA are distributed between adjacent display areas AA.

[0072] In some embodiments, the bonding metal portion 40 may also be located in the display area. Preferably, the bonding metal portion 40 is located in the edge area of ​​the display area, which is not limited in the present application.

[0073] In some embodiments, the material of the polymer electrolyte layer 31 includes a hybrid structure formed of an organic polymer and an inorganic salt.

[0074] According to the embodiments of the present application, the hybrid structure formed by the organic polymer and the inorganic salt can, on the one hand, make use of the flexible structure of the organic polymer so that the polymer electrolyte layer 31 has better flexibility; on the other hand, the inorganic salt can form a sealing structure through electrostatic bonding with the bonding metal part 40 after power is applied.

[0075] Illustratively, the organic polymer may include PEO, POE, and the like.

[0076] Illustratively, the inorganic salt may include LiClO4-LiTFSI and the like.

[0077] In the embodiment of the present application, a hybrid structure may also be formed by other organic polymers and inorganic salts.

[0078] In some embodiments, the material of the polymer electrolyte layer 31 includes at least one of PEO-LiClO4-LiTFSI, PEO-LiClO4-LiTFSI-SiO2 and PEO-PUEE.

[0079] When the polymer electrolyte layer 31 has multiple layers, the materials of each polymer electrolyte layer 31 may be the same or different, preferably different, so that when a crack occurs in one layer, cracks are less likely to occur in the same position in other layers.

[0080] The materials of the two separated polymer electrolyte layers 31 can be the same or different. For example, the first layer 32, the second layer 33, and the third layer are stacked in sequence, and the material of the first layer 32 is PEO-LiClO4-LiTFSI, and the material of the second layer 33 is PEO-LiClO4-LiTFSI-SiO 2， The material of the third layer is PEO-LiClO4-LiTFSI; or the first layer 32, the second layer 33, and the third layer are stacked in sequence, the material of the first layer 32 is PEO-LiClO4-LiTFSI, and the material of the second layer 33 is PEO-LiClO4-LiTFSI-SiO 2， The material of the third layer is PEO-PUEE.

[0081] In some embodiments, the material of the bonding metal portion 40 is consistent with the cathode metal material of the light-emitting unit, or the material of the bonding metal portion 40 is consistent with the anode metal material of the light-emitting unit.

[0082] In the embodiment of the present application, the material of the bonding metal part 40 is consistent with the cathode metal material of the light-emitting unit, or the material of the bonding metal part 40 is consistent with the anode metal material of the light-emitting unit, and can be completed in one process with the light-emitting unit without additional deposition.

[0083] In some embodiments, the material of the bonding metal portion 40 includes one or more of Al, Ag, Mg and Mo.

[0084] The bonding metal part 40 may be composed of only one material, for example, the bonding metal part 40 is composed of only Ag; the bonding metal part 40 may be composed of a composite of multiple elements, for example, the bonding metal part 40 is composed of only Ag and Al.

[0085] When the bonding metal part 40 includes a plurality of continuous closed loops, the materials of the plurality of continuous closed loops may be the same, for example, the materials of the first closed loop 41 and the second closed loop 42 are both Ag; the materials of the plurality of continuous closed loops may also be different. For example, the material of the first closed loop 41 is Ag, and the material of the second closed loop 42 is Ag and Al.

[0086] Based on the same inventive concept, the embodiment of the present application further provides a display device, including the display panel provided by the present application. The display device provided by the embodiment of the present application has the beneficial effects of the display panel provided by the embodiment of the present application. For details, please refer to the specific description of the display panel in the above embodiments, which will not be repeated in this embodiment.

[0087] Exemplarily, the display device includes, but is not limited to, electronic billboards, computers, televisions, mobile phones, e-readers, smart watches, VR or AR helmets, etc., and this application does not make any special limitations on this.

[0088] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the application to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: substrate; An organic light-emitting device layer is disposed on one side of the substrate; An encapsulation layer, used to encapsulate the organic light-emitting device layer, wherein the encapsulation layer comprises at least one polymer electrolyte layer; The bonding metal part is arranged between the substrate and the packaging layer. The bonding metal part is connected to the polymer electrolyte layer by electrostatic bonding. The bonding metal part and the polymer electrolyte layer form a bonding area.

2. The display panel according to claim 1, characterized in that: The organic light emitting device layer includes a plurality of light emitting units distributed in an array, and the bonding metal part is arranged on the peripheral side of the light emitting unit.

3. The display panel according to claim 2, characterized in that: The bonding metal portion is in a continuous and closed shape around the light emitting unit.

4. The display panel according to claim 1, characterized in that: In the first direction, the width of the bonding area is 10 μm to 300 μm; The first direction is a direction from the center of the substrate to the edge of the substrate.

5. The display panel according to claim 3, characterized in that: The bonding metal part in the continuous closed shape includes a plurality of closed loops to form a plurality of bonding areas, and the plurality of closed loops are arranged at intervals.

6. The display panel according to claim 5, characterized in that: The closed loop comprises a first closed loop and a second closed loop, the first closed loop is located outside the second closed loop, and the width of the first closed loop in the first direction is greater than the width of the second closed loop in the first direction; The first direction is a direction from the center of the substrate to the edge of the substrate.

7. The display panel according to claim 6, characterized in that: The width of the first closed loop in the first direction is 50 μm to 300 μm.

8. The display panel according to claim 1, characterized in that: The thickness of the bonding metal part in the direction from the substrate to the packaging layer is 10nm to 100nm; The thickness of the polymer electrolyte layer in a direction from the substrate to the encapsulation layer is 50 μm to 300 μm.

9. The display panel according to claim 1, characterized in that: The transmittance a of the polymer electrolyte layer satisfies a≥90%, and the water resistance b satisfies 10 -3 g / cm 2 ~10 -4 g / cm 2 .

10. The display panel according to claim 1, characterized in that: The encapsulation layer includes an inorganic layer, and a thickness of the inorganic layer is smaller than a thickness of the polymer electrolyte layer.

11. The display panel according to claim 1, characterized in that: The polymer electrolyte layer includes a first layer and a second layer. The first layer is located on a side close to the substrate, and the thickness of the first layer is greater than that of the second layer.

12. The display panel according to any one of claims 1 to 11, characterized in that: The display panel includes a display area and a non-display area, the non-display area at least partially surrounds the display area, and the bonding metal portion is disposed in the non-display area.

13. The display panel according to claim 1, characterized in that: The material of the polymer electrolyte layer includes a hybrid structure formed by an organic polymer and an inorganic salt.

14. The display panel according to claim 1, characterized in that: The material of the polymer electrolyte layer includes at least one of PEO-LiClO4-LiTFSI, PEO-LiClO4-LiTFSI-SiO2 and PEO-PUEE.

15. The display panel according to claim 2, characterized in that: The material of the bonding metal part is consistent with the cathode metal material of the light-emitting unit, or the material of the bonding metal part is consistent with the anode metal material of the light-emitting unit.

16. The display panel according to claim 1, characterized in that: The material of the bonding metal part includes one or more of Al, Ag, Mg and Mo.

17. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 16.

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