Display panel, method for manufacturing the same, and display device

Abstract

The present application discloses a display panel, a manufacturing method thereof, and a display device. The display panel includes a driving substrate; a pixel definition layer located on one side of the driving substrate, the pixel definition layer including a plurality of openings; a conductive layer located on the side of the pixel definition layer facing away from the driving substrate, the conductive layer including a plurality of conductive unit groups, each conductive unit group including at least two spaced-apart conductive units; an isolation structure including a first part and a second part connected to each other, the first part being located between at least some adjacent conductive units in the same conductive unit group, the second part being located on the side of the conductive unit group facing away from the driving substrate, the orthographic projection of the second part on the driving substrate surrounding the orthographic projection of the conductive unit group on the driving substrate, and the isolation structure being an insulating structure; a light-emitting device including a first electrode, a light-emitting functional layer, and a second electrode stacked in sequence, the second electrode being in contact with the conductive unit. According to the embodiments of the present application, it is beneficial to improve the display effect.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a display panel, a preparation method thereof, and a display device. Background Art

[0002] As a flat display panel, an Organic Light Emitting Display (OLED) display panel has been widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptop computers, and desktop computers due to its advantages of high image quality, power saving, thin body, and wide application range, and has become the mainstream in display panels.

[0003] There are some common layers in the OLED display panel. When controlling a certain light-emitting pixel to emit light, leakage occurs between sub-pixels through the common layer, affecting the display effect. Summary of the Invention

[0004] Embodiments of the present application provide a display panel, a preparation method thereof, and a display device, which are beneficial to improving the display effect.

[0005] In a first aspect, embodiments of the present application provide a display panel, including a driving substrate; a pixel definition layer located on one side of the driving substrate, the pixel definition layer including a plurality of openings; a conductive layer located on the side of the pixel definition layer facing away from the driving substrate, the conductive layer including a plurality of conductive unit groups, and the orthographic projection of the conductive unit group on the driving substrate is located between the orthographic projections of adjacent openings on the driving substrate, the conductive unit group including at least two spaced-apart conductive units; an isolation structure including a first part and a second part connected to each other, the first part being located between at least some adjacent conductive units in the same conductive unit group, the second part being located on the side of the conductive unit group facing away from the driving substrate, the orthographic projection of the second part on the driving substrate surrounding the orthographic projection of the conductive unit group on the driving substrate, and the isolation structure being an insulating structure; a light-emitting device disposed in the opening, and in the direction away from the driving substrate, the light-emitting device includes a first electrode, a light-emitting functional layer, and a second electrode stacked in sequence, and the second electrode is in contact with the conductive unit.

[0006] In a possible implementation manner of the first aspect, the display panel further includes:

[0007] A connection trace connecting the conductive units, and at least part of the second electrode is connected to the conductive unit through the connection trace;

[0008] Preferably, the conductive unit corresponds to the opening one by one;

[0009] Preferably, the connection trace and the conductive unit are located in the same film layer, or the connection trace is disposed in the driving substrate.

[0010] In a possible implementation of the first aspect, the display area of the display panel includes a plurality of sub-display areas, and the second electrodes of the plurality of light-emitting devices in the same sub-display area are connected by connection traces;

[0011] Preferably, the display panel further includes a plurality of power buses. The second electrodes of the light-emitting devices in the same sub-display area are connected to the same power bus, and the second electrodes of the light-emitting devices in different sub-display areas are connected to different power buses.

[0012] In a possible implementation of the first aspect, the display area of the display panel includes light-emitting devices of multiple colors, and the second electrodes of the light-emitting devices of the same color are connected by connection traces;

[0013] Preferably, the plurality of light-emitting devices are arranged in multiple rows, and the second electrodes of the light-emitting devices of the same color in the same row or the same column are connected by connection traces.

[0014] Preferably, the display panel further includes a plurality of power buses. The second electrodes of the light-emitting devices of the same color are connected to the same power bus, and the second electrodes of the light-emitting devices of different colors are connected to different power buses.

[0015] In a possible implementation of the first aspect, the connection trace includes a first connection trace and a second connection trace, and the extending directions of the first connection trace and the second connection trace intersect;

[0016] Preferably, when the second electrodes of the light-emitting devices of the same color in the same row are connected by the first connection trace, the second electrodes of the light-emitting devices of at least one color and of the same color in the same column are connected by the second connection trace;

[0017] When the second electrodes of the light-emitting devices of the same color in the same column are connected by the first connection trace, the second electrodes of the light-emitting devices of at least one color and of the same color in the same row are connected by the second connection trace;

[0018] Preferably, the light-emitting devices include a first light-emitting device that emits red light, a second light-emitting device that emits green light, and a third light-emitting device that emits blue light, and the second electrodes of the second light-emitting devices in the same column are connected by the second connection trace.

[0019] In a possible implementation of the first aspect, at least a part of the first connection trace and the second connection trace are located in different film layers;

[0020] Preferably, the first connection lines corresponding to the first light-emitting device and the third light-emitting device are located in the same film layer, the first connection line and the second connection line corresponding to the second light-emitting device are located in the same film layer, and the second connection line and the first connection lines corresponding to the first light-emitting device and the third light-emitting device are located in different film layers;

[0021] Preferably, the first connection line and the second connection line corresponding to the second light-emitting device and the conductive unit are located in the same film layer.

[0022] In a possible implementation manner of the first aspect, the display panel includes a non-display area and a display area. The power supply bus includes a first power supply bus, a second power supply bus, and a third power supply bus located in the non-display area. The light-emitting devices include a first light-emitting device, a second light-emitting device, and a third light-emitting device that emit light of different colors. The second electrode of the first light-emitting device is connected to the first power supply bus, the second electrode of the second light-emitting device is connected to the second power supply bus, and the second electrode of the third light-emitting device is connected to the third power supply bus;

[0023] Both the first power supply bus and the third power supply bus extend along the column direction, and one of them is located on one side of the display panel in the row direction, and the other is located on the other side of the display panel in the row direction. The second power supply bus extends along the row direction and is located on one side of the display panel in the column direction;

[0024] Alternatively, there are a first power supply bus, a second power supply bus, and a third power supply bus on both sides in the row direction. The second electrode of the first light-emitting device in the same row is connected to both the first power supply buses on both sides, the second electrode of the second light-emitting device in the same row is connected to both the second power supply buses on both sides, and the second electrode of the third light-emitting device in the same row is connected to both the third power supply buses on both sides.

[0025] In a possible implementation manner of the first aspect, a connection trace is connected between any two adjacent conductive units.

[0026] In a second aspect, an embodiment of the present application provides a method for manufacturing a display panel, including:

[0027] Providing a driving substrate;

[0028] Forming a plurality of first electrodes spaced apart from each other on one side of the driving substrate;

[0029] Forming a patterned pixel definition layer on one side of the driving substrate. The pixel definition layer includes a plurality of openings that expose the first electrodes;

[0030] Forming a patterned conductive layer on the side of the pixel definition layer facing away from the driving substrate. The conductive layer includes a plurality of conductive unit groups, and the orthographic projection of the conductive unit group on the driving substrate is located between the orthographic projections of adjacent openings on the driving substrate. The conductive unit group includes at least two spaced-apart conductive units;

[0031] A patterned isolation structure is formed on the side of the pixel definition layer facing away from the driving substrate. The first part of the isolation structure is located between at least partially adjacent conductive units in the same conductive unit group. The second part of the isolation structure is located on the side of the conductive unit group facing away from the driving substrate, and the orthographic projection of the second part on the driving substrate surrounds the orthographic projection of the conductive unit group on the driving substrate. Both the conductive unit group and the isolation structure expose the first electrode;

[0032] An emission functional layer is formed on the side of the first electrode facing away from the driving substrate, and the emission functional layers of different light-emitting devices are isolated by the conductive units and the isolation structure;

[0033] A second electrode is formed on the side of the emission functional layer facing away from the driving substrate, and the second electrode is in contact with the conductive unit.

[0034] In a third aspect, an embodiment of the present application provides a display device, including a display panel as in the embodiment of the first aspect.

[0035] According to the display panel, the preparation method thereof, and the display device provided by the embodiments of the present application, on the one hand, since the orthographic projection of the second part on the driving substrate surrounds the orthographic projection of the conductive unit group on the driving substrate, the side surface formed by the second part and the conductive unit group as a whole is not a flat surface. In the direction parallel to the light-emitting surface of the display panel, the side surface of the conductive unit group is closer to the first part than the side surface of the second part. Thus, a true physical insulation can be achieved between the emission functional layers of different light-emitting devices, reducing the lateral leakage between different light-emitting devices, thereby improving the display effect. On the other hand, the second electrode is in contact with the conductive unit, so that a driving signal can be provided to each second electrode through the conductive unit, thus facilitating the driving of the second electrode. On the other hand, the second electrodes of different light-emitting devices are separated from each other, which is beneficial to providing different driving signals to the second electrodes of different light-emitting devices, thereby facilitating the dynamic adjustment of the potentials of different second electrodes, and further reducing the power consumption of the display panel. Description of the Drawings

[0036] By reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present application will become more apparent, wherein the same or similar reference numerals represent the same or similar features, and the drawings are not drawn to actual scale.

[0037] Figure 1 Showing a schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present application;

[0038] Figure 2 Showing a schematic top view of a partial area of a display panel provided by an embodiment of the present application;

[0039] Figure 3 Showing Figure 2Schematic diagram of an enlarged structure in the Q region;

[0040] Figure 4 Schematic diagram of another cross-sectional structure of the display panel provided by an embodiment of the present application;

[0041] Figure 5 Schematic diagram of yet another cross-sectional structure of the display panel provided by an embodiment of the present application;

[0042] Figure 6 Schematic diagram of another top view of a partial area of the display panel provided by an embodiment of the present application;

[0043] Figure 7 Schematic diagram of yet another top view of a partial area of the display panel provided by an embodiment of the present application;

[0044] Figure 8 Schematic diagram of yet another top view of a partial area of the display panel provided by an embodiment of the present application;

[0045] Figure 9 Schematic diagram of yet another top view of a partial area of the display panel provided by an embodiment of the present application;

[0046] Figure 10 Schematic diagram of yet another top view of a partial area of the display panel provided by an embodiment of the present application;

[0047] Figure 11 Schematic diagram of the process flow of the manufacturing method of the display panel provided by an embodiment of the present application;

[0048] Figures 12a to 12h Schematic diagrams of some corresponding structures in the manufacturing method of the display panel provided by an embodiment of the present application;

[0049] Figures 13a to 13d Schematic diagrams of some other corresponding structures in the manufacturing method of the display panel provided by an embodiment of the present application;

[0050] Figure 14 Schematic diagram of a structure of the display device provided by an embodiment of the present application. Description of the drawings:

[0052] 10. Driving substrate; 20. Pixel definition layer; 30. Conductive layer; 40. Isolation structure; 50. Light-emitting device;

[0053] 31. Conductive unit; 41. First part; 42. Second part; 51. First electrode; 52. Second electrode; 53. Light-emitting functional layer 53; 531. Hole injection layer; 532. Hole transport layer; 533. Organic light-emitting layer; 534. Electron transport layer; 535. Electron injection layer;

[0054] 521. First sub - electrode; 522. Second sub - electrode; 523. Third sub - electrode;

[0055] 501. First light - emitting device; 502. Second light - emitting device; 503. Third light - emitting device;

[0056] 61. First film layer; 62. Second film layer;

[0057] 70. Connection trace; 71. First connection trace; 72. Second connection trace;

[0058] 711. First sub - connection line; 712. Second sub - connection line; 713. Third sub - connection line;

[0059] 80. Power supply bus; 81. First power supply bus; 82. Second power supply bus; 83. Third power supply bus. Detailed implementation mode

[0060] The features and exemplary embodiments of each aspect 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 with reference to 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 some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article or device comprising the said elements.

[0062] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "above" or "on top of" another layer or another region, it may mean directly above the other layer or another region, or there may be other layers or regions between it and the other layer or another region. And if the component is flipped, this layer or region will be "below" or "beneath" the other layer or region.

[0063] It should be understood that the term "and / or" used herein is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this text generally represents an "or" relationship between the front and rear associated objects.

[0064] In the embodiments of the present application, the term "connection" may refer to the direct connection of two components, or may refer to the connection of two components via one or more other components.

[0065] Without departing from the spirit or scope of the present application, various modifications and variations can be made in the present application, which are obvious to those skilled in the art. Therefore, the present application is intended to cover the modifications and variations of the present application that fall within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in the embodiments of the present application can be combined with each other without conflict.

[0066] Before elaborating on the technical solutions provided in the embodiments of the present application, for the convenience of understanding the embodiments of the present application, the present application first specifically describes the problems existing in the related technologies:

[0067] The OLED display panel has many advantages such as self-luminescence, fast response, high brightness, lightness and thinness, and has gradually become the mainstream in the display field.

[0068] The inventor's research found that in order to reduce the process difficulty, some film layers in the OLED display panel (such as the hole injection layer, electron injection layer, etc.) can be deposited by using a common mask plate. Therefore, the film layers deposited by using a common mask plate are a continuous whole (hereinafter, the film layers deposited by using a common mask plate are referred to as the common layer), resulting in no true physical insulation being formed between sub-pixels of different colors. When the sub-pixels of each color emit light, there will be lateral leakage between the sub-pixels through the common layer, affecting the display effect.

[0069] To solve the above problems, the embodiments of the present application provide a display panel, a preparation method thereof, and a display device. The following will describe the embodiments of the display panel, the preparation method thereof, and the display device with reference to the accompanying drawings.

[0070] First, the display panel provided by the embodiments of the present application will be introduced below. The display panel provided by the embodiments of the present application may be an OLED display panel.

[0071] Figure 1 A cross-sectional structure schematic diagram of the display panel provided by the embodiments of the present application is shown. Figure 2A top view schematic diagram of a display panel provided by an embodiment of the present application is shown. Figure 3 Shown Figure 2 An enlarged structural schematic diagram of area Q therein.

[0072] As Figures 1 to 3 As shown, the display panel 100 provided by an embodiment of the present application may include a driving substrate 10, a pixel definition layer 20, a conductive layer 30, an isolation structure 40, and a light-emitting device 50.

[0073] The driving substrate 10 may include a driving circuit. For example, the driving substrate 10 may include a pixel driving circuit for driving the light-emitting device 50 to emit light. The pixel driving circuit may be arranged in an array. In this case, the driving substrate 10 may also be referred to as an array substrate. The pixel driving circuit may include devices such as transistors and capacitors. For another example, the driving substrate 10 may further include signal traces such as scan lines and data lines.

[0074] The pixel definition layer 20 is located on one side of the driving substrate 10. The pixel definition layer 20 may include a plurality of openings K. The plurality of openings K may be arranged in an array. The openings of the pixel definition layer 20 may be used to define the positions of the light-emitting devices 50. The pixel definition layer 20 may include an inorganic material.

[0075] The conductive layer 30 is located on the side of the pixel definition layer 20 facing away from the driving substrate 10. The conductive layer 30 may include a plurality of conductive unit groups. The orthographic projection of the conductive unit group on the driving substrate 10 may be located between the orthographic projections of adjacent openings K on the driving substrate 10. Specifically, the conductive unit group includes at least two spaced-apart conductive units 31. For example, the conductive unit 31 may be arranged to surround at least one opening K.

[0076] It can be understood that the conductive unit 31 has electrical conductivity. The conductive unit 31 may include a metal material. The metal material may include but is not limited to Mo, Al, Ti, Cu, etc.

[0077] The isolation structure 40 is an insulating structure. It can be understood that the isolation structure 40 does not have electrical conductivity. For example, the isolation structure 40 may include an insulating material. The insulating material may include but is not limited to silicon nitride, silicon oxide, etc.

[0078] The isolation structure 40 may include a first part 41 and a second part 42 that are connected to each other. The first part 41 and the second part 42 may be an integral structure. That is to say, the first part 41 and the second part 42 may be integrally formed during the manufacturing process.

[0079] A first portion 41 is provided between at least some adjacent conductive units 31 within the same conductive unit group. Specifically, it can be understood that no opening K is provided between the conductive units 31 adjacent to the same first portion 41. It is understandable that the adjacent conductive units 31 can be spaced apart from each other by the first portion 41. For example, the display area of the display panel may include multiple sub-display areas. The adjacent conductive units 31 within the same sub-display area may be in contact, and the conductive units 31 in different sub-display areas can be separated from each other by the first portion 41. In this case, without a connecting trace connecting the conductive units 31 in different sub-display areas, the conductive units 31 in different sub-display areas are independent of each other. Another example is that a first portion 41 can be provided between any two adjacent conductive units 31. In this case, without a connecting trace connecting different conductive units 31, any two conductive units 31 can be independent of each other.

[0080] A second portion 42 is located on the side of the conductive unit group facing away from the driving substrate 10, and the orthographic projection of the second portion 42 on the driving substrate 10 surrounds the orthographic projection of the conductive unit group on the driving substrate 10. That is to say, in the direction parallel to the light-emitting surface of the display panel, the width of the second portion 42 is greater than the width of the conductive unit group. The side surface formed by the second portion 42 and the conductive unit 31 as a whole is not a flat surface. In the direction parallel to the light-emitting surface of the display panel, the side surface of the conductive unit 31 is closer to the first portion 41 than the side surface of the second portion 42.

[0081] The light-emitting device 50 is disposed in the opening K of the pixel definition layer 20. Multiple light-emitting devices 50 can be provided in one-to-one correspondence with multiple openings K. In the direction away from the driving substrate 10, the light-emitting device 50 may include a first electrode 51, a light-emitting functional layer 53, and a second electrode 52 which are stacked. The first electrode 51 can be an anode, and the second electrode 52 can be a cathode. The opening K of the pixel definition layer 20 exposes the first electrode 51. The pixel definition layer 20 can cover a partial edge of the first electrode 51.

[0082] The second electrode 52 is in contact with the conductive unit 31. The light-emitting functional layer 53 may or may not be in contact with the conductive unit 31. It is understandable that the conductive unit 31 can surround at least one second electrode 52. In the drawings of the present application, the case where the conductive unit 31 is provided in one-to-one correspondence with the opening K is taken as an example. In some other embodiments, the conductive unit 31 can also surround multiple openings K. That is to say, the conductive unit 31 can surround the second electrodes 52 of multiple light-emitting devices 50. Exemplarily, the same conductive unit 31 can surround the second electrodes 52 of multiple light-emitting devices 50 that emit light of the same color.

[0083] In the top view schematic diagram of the display panel shown in this document, in order to clearly show the structure of the conductive layer 30, only the second electrode 52 of the light-emitting device 50 is shown, and other film layers of the light-emitting device 50 and some film layers of the display panel are hidden. It can be understood that one second electrode 52 in the top view schematic diagram of this document can correspond to one light-emitting device 50.

[0084] The conductive unit 31 is generally annular. Taking the case where the conductive units 31 are separated from each other as an example, the second electrodes 52 are also separated from each other. In addition, the fact that the conductive unit 31 surrounds the second electrode 52 does not mean that the conductive unit 31 and the second electrode 52 must be located in the same film layer. The conductive unit 31 and the second electrode 52 can be located in different film layers. The same film layer can be understood as two components being formed simultaneously through the same process steps, and different film layers can be understood as two components being formed step by step through different process steps.

[0085] Figure 4 Another cross-sectional structure schematic diagram of the display panel provided by the embodiment of the present application is shown. As an example, as Figure 4 shown, in the direction away from the driving substrate 10, the light-emitting functional layer 53 may include a hole injection layer 531, a hole transport layer 532, an organic light-emitting layer 533, an electron transport layer 534, and an electron injection layer 535 which are stacked. Among them, at least one of the hole injection layer 531, the hole transport layer 532, the electron transport layer 534, and the electron injection layer 535 can be obtained by evaporation using a common mask. In addition, the second electrode 52 can also be obtained by evaporation using a common mask.

[0086] Figure 5 Another cross-sectional structure schematic diagram of the display panel provided by the embodiment of the present application is shown. As Figure 5 shown, in the case of forming some film layers of the light-emitting functional layer 53 (such as at least one of the hole injection layer 531, the hole transport layer 532, the electron transport layer 534, and the electron injection layer 535) using a common mask, a first film layer 61 will be formed on the side of the isolation structure 40 facing away from the driving substrate 10. Since the second part 42 of the isolation structure 40 surrounds the projection of the conductive unit 31 on the driving substrate 10 in the projection on the driving substrate 10, the first film layer 61 and the light-emitting functional layer 53 will be disconnected, thereby realizing true physical insulation between the light-emitting functional layers 53 of different light-emitting devices 50. In the case of forming the second electrode 52 using a common mask, a second film layer 62 will be formed on the side of the first film layer 61 facing away from the driving substrate 10. Similarly, since the second part 42 of the isolation structure 40 surrounds the projection of the conductive unit 31 on the driving substrate 10 in the projection on the driving substrate 10, the second film layer 62 and the second electrode 52 will be disconnected, thereby realizing the separation of the second electrodes 52 of different light-emitting devices 50 from each other.

[0087] During the preparation of the display panel, the first film layer 61 and the second film layer 62 can be further removed. Of course, the first film layer 61 and the second film layer 62 can also be retained in the finished display panel, and this application does not limit this.

[0088] According to the display panel provided by the embodiment of the present application, on the one hand, since the orthographic projection of the second part 42 on the driving substrate 10 surrounds the orthographic projection of the conductive unit group on the driving substrate 10, the side surface formed by the second part 42 and the conductive unit group as a whole is not a flat surface. In the direction parallel to the light-emitting surface of the display panel, the side surface of the conductive unit group is closer to the first part 41 than the side surface of the second part 42. Thus, a true physical insulation can be achieved between the light-emitting functional layers 53 of different light-emitting devices 50, reducing the lateral leakage between different light-emitting devices 50, thereby improving the display effect; on the other hand, the second electrode 52 is in contact with the conductive unit 31, so that a driving signal can be provided to each second electrode 52 through the conductive unit 31, thus facilitating the driving of the second electrode 52; on the other hand, the second electrodes 52 of different light-emitting devices 50 are separated from each other, which is beneficial to providing different driving signals to the second electrodes 52 of different light-emitting devices 50, thereby facilitating the dynamic adjustment of the potentials of different second electrodes 52, and further reducing the power consumption of the display panel.

[0089] It can be understood that taking the display area of the display panel including multiple sub-display areas, adjacent conductive units in the same sub-display area being in contact with each other, and the conductive units in different sub-display areas being separated from each other by the first part as an example, since adjacent conductive units in the same sub-display area are in contact with each other and the second electrode is in contact with the conductive unit, that is to say, the second electrodes in the same sub-display area are connected to each other. Different driving signals can be provided to the second electrodes of different sub-display areas according to the actual display situation, that is, zonal control can be achieved, which is beneficial to the dynamic adjustment of the potentials of the second electrodes in different sub-display areas, and further reduces the power consumption of the display panel.

[0090] In some alternative embodiments, such as Figure 6 shown, the display panel may further include a connection trace 70, and the connection trace 70 can be connected to the conductive unit 31. The connection trace 70 is a metal trace. Since the second electrode 52 is in contact with the conductive unit 31, the driving signal can be transmitted to the second electrode 52 through the connection trace 70 and the conductive unit 31. In this way, by providing the connection trace 70, the driving signal can be conveniently transmitted to the second electrode 52.

[0091] Exemplarily, please continue to refer to Figure 6 , a connection trace 70 can be connected between any two adjacent conductive units 31. In this way, the multiple second electrodes 52 of the entire display panel can be directly connected to each other, so that the driving signal can be conveniently provided to each second electrode 52.

[0092] Exemplarily, the line width of the connection trace 70 may be greater than or equal to 1.5 um. The minimum line spacing between adjacent connection traces 70 may be greater than or equal to 2 um. The minimum distance between the connection trace 70 and the opening K may be greater than or equal to 1 um.

[0093] Multiple connection traces 70 may be located in the same film layer. The connection trace 70 and the conductive unit 31 may be located in the same film layer. Alternatively, multiple connection traces 70 may be located in multiple film layers. For example, at least part of the connection traces 70 may be disposed in the driving substrate 10.

[0094] Exemplarily, at least part of different second electrodes 52 may be connected through the connection trace 70 and the conductive unit 31. As an example, the display area of the display panel may be divided into multiple sub-display areas, and the second electrodes 52 of multiple light-emitting devices 50 in the same sub-display area may be connected through the connection trace 70. In this way, zonal control can be achieved. For example, different potentials can be provided for the second electrodes of different sub-display areas according to actual display requirements.

[0095] Exemplarily, the second electrodes 52 of all the light-emitting devices 50 in the same sub-display area may be connected through the connection trace 70.

[0096] As an example, the display panel may include multiple power buses. The second electrodes of the light-emitting devices in the same sub-display area may be connected to the same power bus, and the second electrodes of the light-emitting devices in different sub-display areas may be connected to different power buses. In this way, different driving signals can be provided for the second electrodes of different sub-display areas by using different power buses according to the actual display situation to achieve zonal control, which is beneficial to dynamically adjusting the potentials of the second electrodes in different sub-display areas, thereby reducing the power consumption of the display panel.

[0097] The inventors also found through research that the characteristics of light-emitting devices of different colors are different. When the second electrodes of all the light-emitting devices of all colors in the display panel are interconnected, in order to take into account all the light-emitting devices of all colors, a relatively low potential needs to be provided for the second electrodes, resulting in a relatively large power consumption of the display panel.

[0098] As an example, the display area of the display panel may include light-emitting devices 50 of multiple colors. The second electrodes 52 of the light-emitting devices 50 of the same color may be connected through connection traces 70. Connection traces may not be provided between the second electrodes 52 of the light-emitting devices 50 of different colors. In this way, drive signals of different potentials can be provided for the second electrodes 52 of the light-emitting devices 50 of different colors specifically, and there is no need to set a unified lower-potential signal, which is beneficial to reducing the power consumption of the display panel. For example, the display area of the display panel may be divided into multiple sub-display areas, and the second electrodes 52 of the light-emitting devices 50 of the same color in the same sub-display area may be connected through connection traces 70.

[0099] Figure 7 FIG. shows another top view schematic diagram of a partial area of the display panel provided in an embodiment of the present application. As another example, as Figure 7 shown, multiple light-emitting devices 50 are arranged in multiple rows. The light-emitting devices 50 include light-emitting devices of multiple colors, and the second electrodes 52 of the light-emitting devices 50 of the same color in the same row or the same column are connected through connection traces 70. Connection traces may not be provided between the second electrodes 52 of the light-emitting devices 50 of different colors. In this way, the arrangement rule of the connection traces 70 can be made to be consistent with the arrangement rules of other signal lines (such as scan signal lines, light-emitting control signal lines, initialization signal lines, etc.) of the display panel, which helps to improve display uniformity.

[0100] The second electrodes 52 with the same shape and area in the top view schematic diagram herein may correspond to the light-emitting devices 50 of the same color. Figure 7 Three second electrodes 52 with substantially the same shape but different areas are schematically shown in Figure 7 , and it can be understood that

[0101] As Figure 7 shown, taking the direction X as the row direction and the direction Y as the column direction as an example, some rows may include light-emitting devices 50 of two colors, and some rows may include light-emitting devices 50 of one color.

[0102] In some alternative embodiments, as Figure 8 shown, the display panel may further include multiple power buses 80. The second electrodes of the light-emitting devices of the same color may be connected to the same power bus, and the second electrodes of the light-emitting devices of different colors may be connected to different power buses. The second electrodes of all the light-emitting devices of the same color in the display panel may be connected to the same power bus. Exemplarily, the potentials of the signals transmitted by different power buses may be set to be different according to the actual display situation.

[0103] Exemplarily, the display panel may include a display area AA and a non-display area NA. The non-display area NA may surround the display area AA. The non-display area NA may include a bonding area BA. The light-emitting devices are distributed in the display area AA. The power supply bus 80 may be located in the non-display area NA. The power supply bus 80 may extend to the bonding area BA and be connected to the bonding terminals in the bonding area BA.

[0104] By providing the connection bus, driving signals required by the second electrodes of the light-emitting devices of each color can be respectively provided. For example, signals of different potentials may be provided to the second electrodes of the light-emitting devices of different colors.

[0105] Exemplarily, the connection traces 70 connecting the second electrodes of the light-emitting devices of the same color in the same row may extend in the row direction as a whole. Exemplarily, the connection traces 70 and the conductive unit 31 may be located in the same film layer. To avoid connection between the second electrodes of the light-emitting devices of different colors, the first connection trace 71 may have a detoured segment.

[0106] Similarly, Figure 8 shows three second electrodes 52 with substantially the same shape but different areas. It can be understood that, Figure 8 shows light-emitting devices 50 of three colors. The number of the power supply buses 80 may be three, and the second electrodes of the light-emitting devices 50 of the three colors are connected to the three power supply buses in one-to-one correspondence.

[0107] Still taking Figure 8 as an example, the light-emitting device 50 may include a first light-emitting device 501, a second light-emitting device 502, and a third light-emitting device 503 that emit light of different colors. For example, the first light-emitting device 501 may emit red light, the second light-emitting device 502 may emit green light, and the third light-emitting device 503 may emit blue light. The power supply bus 80 may include a first power supply bus 81, a second power supply bus 82, and a third power supply bus 83.

[0108] To clearly distinguish the second electrodes of different light-emitting devices, the second electrode 52 of the first light-emitting device 501 is referred to as a first sub-electrode 521, the second electrode 52 of the second light-emitting device 502 is referred to as a second sub-electrode 522, and the second electrode 52 of the third light-emitting device 503 is referred to as a third sub-electrode 523. The first sub-electrode 521 may be connected to the first power supply bus 81, the second sub-electrode 522 may be connected to the second power supply bus 82, and the third sub-electrode 523 may be connected to the third power supply bus 83.

[0109] Exemplarily, all the first sub-electrodes 521 in the display panel may be connected to the first power supply bus 81, all the second sub-electrodes 522 in the display panel may be connected to the second power supply bus 82, and all the third sub-electrodes 523 in the display panel may be connected to the third power supply bus 83.

[0110] Please continue to refer to Figure 8 , on both sides of the non-display area NA in the row direction X, a first power bus 81, a second power bus 82, and a third power bus 83 can be provided. The first power buses 81 on both sides of the non-display area NA in the row direction X can be respectively connected to different bonding terminals, the second power buses 82 on both sides of the non-display area NA in the row direction X can be respectively connected to different bonding terminals, and the third power buses 83 on both sides of the non-display area NA in the row direction X can be respectively connected to different bonding terminals.

[0111] For example, the first power bus 81, the second power bus 82, and the third power bus 83 can all at least partially surround the display area AA. The second electrode 521 of the first light-emitting device 501 in the same row is connected to the first power buses 81 on both sides, the second electrode 522 of the second light-emitting device 502 in the same row is connected to the second power buses 82 on both sides, and the second electrode 523 of the third light-emitting device 503 in the same row is connected to the third power buses 83 on both sides. In this way, drive signals can be provided to the second electrodes of the same row from both ends respectively, and the problem of uneven display caused by voltage drop and signal delay can be improved.

[0112] Figure 9 Another top view schematic diagram of a partial area of the display panel provided by the embodiment of the present application is shown. In some alternative embodiments, as Figure 9 shown, the first power bus 81 and the third power bus 83 can both extend along the column direction Y, and one of them is located on one side of the display panel in the row direction X, and the other is located on the other side of the display panel in the row direction X. The second power bus 82 can extend along the row direction X and is located on one side of the display panel in the column direction Y. The first power bus 81, the second power bus 82, and the third power bus 83 can all extend to the bonding area BA and be connected to the bonding terminals in the bonding area BA.

[0113] Since only one power bus is provided on one side, the line width of the power trace can be set larger, thereby reducing the voltage drop and improving the display uniformity.

[0114] Please continue to refer to Figure 9 , the connection trace 70 can include a first connection trace 71 and a second connection trace 72, and the extending directions of the first connection trace 71 and the second connection trace 72 intersect. When the second electrodes 52 of the light-emitting devices of the same color in the same row are connected by the first connection trace 71, the second electrodes 52 of the light-emitting devices of at least one color and of the same color in the same column are connected by the second connection trace 72, or when the second electrodes 52 of the light-emitting devices of the same color in the same column are connected by the first connection trace 71, the second electrodes 52 of the light-emitting devices of at least one color and of the same color in the same row are connected by the second connection trace 72.

[0115] In the accompanying drawings of the present application, it is taken as an example that the second electrodes 52 of the light-emitting devices of the same color in the same row are connected by the first connection trace 71, which is not used to limit the present application. In the present application, since the extending directions of the first connection trace 71 and the second connection trace 72 intersect, the first connection trace 71 and the second connection trace 72 corresponding to the light-emitting devices of the same color form a grid shape, which can reduce the voltage drop of the connection trace and improve the display uniformity.

[0116] For example, in order to better distinguish the first connection traces connecting different color light-emitting devices, the first connection trace 71 connecting the first sub-electrode 521 is called the first sub-connection line 711, the first connection trace 71 connecting the second sub-electrode 522 is called the second sub-connection line 712, and the first connection trace 71 connecting the third sub-electrode 523 is called the third sub-connection line 713. The first sub-connection line 711, the second sub-connection line 712, and the third sub-connection line 713 may all extend along the row direction X. The first sub-connection line 711 is connected to the first power bus 81, the second sub-connection line 712 is connected to the second power bus 82, and the third sub-connection line 713 is connected to the third power trace 83.

[0117] The second connection trace 72 may extend along the column direction Y.

[0118] As Figure 9 and Figure 10 shown, in order to clearly show the second connection line 72, Figure 10 only the partial structure corresponding to the second light-emitting device 502 is shown. The second electrodes 522 of the second light-emitting devices 502 in the same column may be connected by the second connection trace. The second light-emitting device 502 may emit green light. Since the human eye is more sensitive to green, the total number of the second light-emitting devices 502 may be more than the total number of the first light-emitting devices 501, and the total number of the second light-emitting devices 502 may be more than the total number of the third light-emitting devices 503. The more the number of the second light-emitting devices 502, the denser the mesh formed by the second sub-connection line 712 and the second connection trace 72, which can further reduce the voltage drop of the connection trace.

[0119] In some alternative embodiments, since the extending directions of the first connection trace 71 and the second connection trace 72 intersect, to avoid signal crosstalk, at least part of the first connection trace 71 and the second connection trace 72 may be located in different film layers.

[0120] Exemplarily, the first connection traces 71 corresponding to the first light-emitting device 501 and the third light-emitting device 502 may be located in the same film layer. The first connection trace 71 and the second connection trace 72 corresponding to the second light-emitting device 502 are located in the same film layer, and the second connection trace 72 and the first connection traces 71 corresponding to the first light-emitting device 501 and the third light-emitting device 503 are located in different film layers.

[0121] That is, the first sub-connection line 711 and the third sub-connection line 713 can be located in the same film layer, the second sub-connection line 712 and the second connection line 72 can be located in the same film layer, and the second connection line 72 is located in a different film layer from the first sub-connection line 711 and the third sub-connection line 713, and the second sub-connection line 712 is located in a different film layer from the first sub-connection line 711 and the third sub-connection line 713.

[0122] For example, the first sub-connection line 711 and the third sub-connection line 703 can be disposed in the driving substrate 10. The first sub-connection line 711 can be connected to the conductive unit 31 corresponding to the first light-emitting device 501 through the first via hole h1, and the third sub-connection line 703 can be connected to the conductive unit 31 corresponding to the third light-emitting device 503 through the third via hole h3.

[0123] Exemplarily, the second sub-connection line 712 and the second connection line 72 and the conductive unit 31 can be located in the same film layer, so that the second sub-connection line 712 and the second connection line 72 can be directly connected to the conductive unit 31 corresponding to the second light-emitting device 502. At least one of the second sub-connection line 712, the second connection line 72, and the conductive unit 31 corresponding to the second light-emitting device 502 can be connected to the second power bus through the second via hole h2.

[0124] Based on the same inventive concept, the present application further provides a method for manufacturing a display panel. As Figure 11 shown, the driving method of the display panel can include steps S110 to S170.

[0125] S110, providing a driving substrate;

[0126] S120, forming a plurality of first electrodes spaced apart from each other on one side of the driving substrate;

[0127] S130, forming a patterned pixel defining layer on one side of the driving substrate. The pixel defining layer includes a plurality of openings that expose the first electrodes;

[0128] S140, forming a patterned conductive layer on the side of the pixel defining layer facing away from the driving substrate. The conductive layer includes a plurality of conductive unit groups, and the orthographic projection of the conductive unit group on the driving substrate is located between the orthographic projections of adjacent openings on the driving substrate. The conductive unit group includes at least two spaced-apart conductive units;

[0129] S150. Form a patterned isolation structure on the side of the pixel definition layer facing away from the driving substrate. The first part of the isolation structure is located between at least some adjacent conductive units in the same conductive unit group. The second part of the isolation structure is located on the side of the conductive unit group facing away from the driving substrate, and the orthographic projection of the second part on the driving substrate surrounds the orthographic projection of the conductive unit group on the driving substrate. Both the conductive unit group and the isolation structure expose the first electrode.

[0130] S160. Form a light-emitting functional layer on the side of the first electrode facing away from the driving substrate. The light-emitting functional layers of different light-emitting devices are isolated by the conductive units and the isolation structure.

[0131] S170. Form a second electrode on the side of the light-emitting functional layer facing away from the driving substrate. The second electrode is in contact with the conductive unit.

[0132] According to the method for manufacturing a display panel provided by the embodiments of the present application, on the one hand, since the orthographic projection of the second part on the driving substrate surrounds the orthographic projection of the conductive unit group on the driving substrate, the side surface formed by the second part and the entire conductive unit group is not a flat surface. In the direction parallel to the light-emitting surface of the display panel, the side surface of the conductive unit group is closer to the first part than the side surface of the second part. Thus, a true physical insulation can be achieved between the light-emitting functional layers of different light-emitting devices, reducing the lateral leakage between different light-emitting devices, thereby improving the display effect. On the other hand, the second electrode is in contact with the conductive unit, so that a driving signal can be provided to each second electrode through the conductive unit, thus facilitating the driving of the second electrode. On the other hand, the second electrodes of different light-emitting devices are separated from each other, which is beneficial to providing different driving signals to the second electrodes of different light-emitting devices, thereby facilitating the dynamic adjustment of the potentials of different second electrodes, and further reducing the power consumption of the display panel.

[0133] Exemplarily, the semi-finished or finished product structure of the display panel corresponding to S110 - S170 can be as Figures 12a~12h shown.

[0134] In S120, as Figure 12a , a plurality of separated first electrodes 51 can be formed on one side of the driving substrate 10.

[0135] In S130, as Figure 12b , a patterned pixel definition layer 20 can be formed on the side where the first electrode 51 is located. The opening K can expose the first electrode 51, and the pixel definition layer 20 can cover part of the edge of the first electrode 51.

[0136] In S140 and S150, referring to Figures 12c to 12g , as Figure 12c, a metal material can be deposited integrally to form a first body layer 301, and the first body layer 301 can cover the pixel definition layer 20 and the first electrode 51.

[0137] Next, as Figure 12d , the first body layer 301 can be patterned to form a plurality of vias h4, and the vias h4 overlap with the pixel definition layer 20 and penetrate the first body layer 301.

[0138] Next, as Figure 12e , an insulating material can be deposited integrally by chemical vapor deposition (CVD) to form a second body layer 401. The second body layer 401 covers the first body layer 301, and part of the second body layer 401 also fills the vias h4.

[0139] Next, as Figure 12f , the second body layer 401 can be patterned to remove the part above the first electrode 51 and retain the part above the pixel definition layer 20, thereby obtaining the isolation structure 40. The part filled in the vias h4 is the first part 41 of the isolation structure 40, and the part above the first body layer 301 is the second part 42 of the isolation structure 40.

[0140] Next, as Figure 12g , the first body layer 301 can be patterned again, for example, by wet etching to remove the part on the first electrode 51, obtaining a plurality of conductive units 31, such that the orthographic projection of the second part 42 on the driving substrate 10 surrounds the orthographic projection of the conductive units 31 on the driving substrate 10.

[0141] In S160 and S170, as Figure 12h , the light-emitting functional layer 53 can be deposited first, and then the second electrode 52 can be deposited. The deposition angle can be controlled such that the second electrode 52 contacts the conductive units 31.

[0142] In some alternative embodiments, in S110, as Figure 13a shown, the provided driving substrate 10 may include a first connection trace 71. The driving substrate 10 may have vias that expose at least part of the line segment of the first connection trace 71.

[0143] In S130, as Figure 13b shown, a patterned pixel definition layer 20 can be formed on the side where the first electrode 51 is located. The opening K can expose the first electrode 51, and vias are made on the pixel definition layer 20, and the vias expose at least part of the line segment of the first connection trace 71.

[0144] In S140 and S150, referring to Figure 13c, a conductive layer 30 and an isolation structure 40 can be formed in sequence. The conductive layer 30 includes a plurality of conductive units 31, and the conductive units 31 are connected to the first connection trace 71 through reserved vias. Adjacent conductive units 31 are directly separated by the isolation structure 40.

[0145] In S160 and S170, as Figure 13d , a light-emitting functional layer 53 and a second electrode 52 can be formed in sequence.

[0146] As Figure 13d As shown, an insulating layer 90 can be covered on the second electrode 52. The insulating layer 90 can be an inorganic layer and can be used as a packaging film layer of the light-emitting device.

[0147] The present application also provides a display device, including the display panel provided by the present application. Please refer to Figure 14 , Figure 14 is a schematic structural diagram of a display device provided by an embodiment of the present application. Figure 14 The provided display device 1000 includes the display panel 100 provided by any one of the above embodiments of the present application. Figure 14 Taking a mobile phone as an example only in the embodiment, the display device 1000 is described. It can be understood that the display device provided by the embodiment of the present application can be other display devices with a display function such as wearable products, computers, televisions, in-vehicle display devices, etc. The present application does not make specific limitations thereto. 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. Specifically, reference can be made to the specific descriptions of the display panel in the above embodiments, and details are not repeated herein.

[0148] According to the embodiments of the present application as described above, these embodiments do not describe all details in detail, nor limit the application to only the specific embodiments described. Obviously, according to the above description, many modifications and variations can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present application, so that those skilled in the art can make good use of the present application and its modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, Comprising: A driving substrate; A pixel definition layer located on one side of the driving substrate, the pixel definition layer including a plurality of openings; A conductive layer located on the side of the pixel definition layer facing away from the driving substrate, the conductive layer including a plurality of conductive unit groups, and the orthographic projection of the conductive unit group on the driving substrate being located between the orthographic projections of adjacent openings on the driving substrate, the conductive unit group including at least two spaced-apart conductive units, the conductive units surrounding at least one of the openings; An isolation structure including a first part and a second part connected to each other, the first part being located between at least some adjacent conductive units in the same conductive unit group, the second part being located on the side of the conductive unit group facing away from the driving substrate, the orthographic projection of the second part on the driving substrate surrounding the orthographic projection of the conductive unit group on the driving substrate, and the isolation structure being an insulating structure; A light-emitting device disposed in the opening, and in a direction away from the driving substrate, the light-emitting device including a first electrode, a light-emitting functional layer, and a second electrode stacked in sequence, the second electrode being in contact with the conductive unit.

2. The display panel according to claim 1, wherein The display panel further includes: Connection traces connecting the conductive units, and at least some of the second electrodes being connected to the conductive units through the connection traces.

3. The display panel according to claim 1, wherein The conductive units correspond to the openings one by one.

4. The display panel according to claim 2, wherein The connection traces and the conductive units are located in the same film layer, or the connection traces are disposed in the driving substrate.

5. The display panel according to claim 2, characterized in that, The display area of the display panel includes a plurality of sub-display areas, and the second electrodes of the plurality of light-emitting devices in the same sub-display area are connected to each other through the connection traces.

6. The display panel according to claim 5, wherein The display panel further includes a plurality of power buses, the second electrodes of the light-emitting devices in the same sub-display area being connected to the same power bus, and the second electrodes of the light-emitting devices in different sub-display areas being connected to different power buses.

7. The display panel according to claim 2, wherein The display area of the display panel includes light-emitting devices of multiple colors, and the second electrodes of the light-emitting devices of the same color are connected to each other through the connection traces.

8. The display panel according to claim 7, wherein The plurality of light-emitting devices are arranged in multiple rows, and the second electrodes of the light-emitting devices of the same color in the same row or the same column are connected to each other through the connection traces.

9. The display panel according to claim 7, wherein The display panel further includes a plurality of power buses, the second electrodes of the light-emitting devices of the same color being connected to the same power bus, and the second electrodes of the light-emitting devices of different colors being connected to different power buses.

10. The display panel according to claim 7, wherein The connection traces include a first connection trace and a second connection trace, and the extending directions of the first connection trace and the second connection trace intersect; When the second electrodes of the light-emitting devices of the same color in the same row are connected to each other through the first connection trace, the second electrodes of the light-emitting devices of at least one color and of the same color in the same column are connected to each other through the second connection trace; Alternatively, when the second electrodes of the light-emitting devices of the same color in the same column are connected by the first connection trace, the second electrodes of the light-emitting devices of at least one color and of the same color in the same row are connected by the second connection trace.

11. The display panel according to claim 10, wherein, The light-emitting devices include a first light-emitting device that emits red light, a second light-emitting device that emits green light, and a third light-emitting device that emits blue light, and the second electrodes of the second light-emitting devices in the same column are connected by the second connection trace.

12. The display panel according to claim 10, wherein The first connection trace and the second connection trace are at least partially located in different film layers.

13. The display panel according to claim 11, wherein The first connection lines corresponding to the first light-emitting device and the third light-emitting device are located in the same film layer, the first connection line and the second connection line corresponding to the second light-emitting device are located in the same film layer, and the second connection line and the first connection lines corresponding to the first light-emitting device and the third light-emitting device are located in different film layers.

14. The display panel according to claim 11, wherein The first connection line and the second connection line corresponding to the second light-emitting device are located in the same film layer as the conductive unit.

15. The display panel according to claim 9, wherein, The display panel includes a non-display area and a display area. The power bus includes a first power bus, a second power bus, and a third power bus located in the non-display area. The light-emitting devices include a first light-emitting device, a second light-emitting device, and a third light-emitting device that emit different colors of light. The second electrode of the first light-emitting device is connected to the first power bus, the second electrode of the second light-emitting device is connected to the second power bus, and the second electrode of the third light-emitting device is connected to the third power bus. Both the first power bus and the third power bus extend in the column direction, and one of them is located on one side of the display panel in the row direction, and the other is located on the other side of the display panel in the row direction. The second power bus extends in the row direction and is located on one side of the display panel in the column direction. Alternatively, the first power bus, the second power bus, and the third power bus are both on both sides in the row direction. The second electrodes of the first light-emitting devices in the same row are connected to the first power buses on both sides, the second electrodes of the second light-emitting devices in the same row are connected to the second power buses on both sides, and the second electrodes of the third light-emitting devices in the same row are connected to the third power buses on both sides.

16. The display panel according to claim 2, wherein A connection trace is connected between any two adjacent conductive units.

17. A method for preparing a display panel, characterized in that, Comprising: Providing a driving substrate; Forming a plurality of first electrodes spaced apart from each other on one side of the driving substrate; Forming a patterned pixel definition layer on one side of the driving substrate, the pixel definition layer including a plurality of openings that expose the first electrodes; Forming a patterned conductive layer on the side of the pixel definition layer facing away from the driving substrate. The conductive layer includes a plurality of conductive unit groups, and the orthographic projection of the conductive unit group on the driving substrate is located between the orthographic projections of adjacent openings on the driving substrate. The conductive unit group includes at least two spaced-apart conductive units that surround at least one of the openings; A patterned isolation structure is formed on a side of the pixel definition layer facing away from the driving substrate. A first part of the isolation structure is located between at least some adjacent conductive units in the same conductive unit group. A second part of the isolation structure is located on a side of the conductive unit group facing away from the driving substrate. A positive projection of the second part on the driving substrate surrounds a positive projection of the conductive unit group on the driving substrate, and both the conductive unit group and the isolation structure expose the first electrode; An emission functional layer is formed on a side of the first electrode facing away from the driving substrate. The emission functional layers of different light-emitting devices are isolated by the conductive units and the isolation structure; A second electrode is formed on a side of the emission functional layer facing away from the driving substrate. The second electrode is in contact with the conductive unit.

18. A display device, characterized in that, It includes a display panel according to any one of claims 1 to 16.

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