Display panel and display apparatus

Abstract

The present disclosure provides a display panel and a display apparatus. The display panel comprises a display area, and the display area comprises at least one first area. In addition, the display panel further comprises a substrate, and a display function layer, an isolation structure, and a touch structure that are located on the substrate. The display function layer is located on the substrate and comprises a plurality of light-emitting devices. The isolation structure is located on the substrate and located in the display area, the isolation structure comprises a plurality of first openings and a plurality of second openings located in the first area, and the first openings define the light-emitting devices. The touch structure is located on the side of the isolation structure facing away from the substrate and comprises a touch electrode, the touch electrode comprises a dummy electrode, and the orthographic projection of at least one second opening on the substrate is located in the orthographic projection of the dummy electrode on the substrate. The second openings for light transmission are arranged below the dummy electrode, so that the risk of interference between a touch signal and a displayed driving signal can be reduced, thereby ensuring the touch and display functions of the display panel.

Description

Display panel and display device Technical Field

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

[0002] Background of the Invention

[0003] Organic Light-Emitting Diode (OLED) is an organic thin-film electroluminescent device. It has attracted great attention and is widely used in electronic display products due to its advantages such as simple preparation process, low cost, low power consumption, high brightness, wide viewing angle, high contrast and flexible display.

[0004] However, current electronic display products are limited by their own structural design and it is difficult to have both good touch and display functions.

[0005] Summary of the Invention

[0006] According to a first aspect of the present disclosure, there is provided a display panel, comprising a display area, wherein the display area comprises at least one first area. In addition, the display panel further comprises a substrate and a display function layer, an isolation structure and a touch structure located on the substrate. The display function layer is located on the substrate and comprises a plurality of light-emitting devices. The isolation structure is located on the substrate and in the display area, the isolation structure comprising a plurality of first openings and a plurality of second openings located in the first area, the first openings defining the light-emitting devices. The touch structure is located on a side of the isolation structure facing away from the substrate, and comprises a touch electrode, the touch electrode comprising a dummy electrode, and the orthographic projection of the at least one second opening on the substrate is located within the orthographic projection of the dummy electrode on the substrate.

[0007] In the above solution, the second opening for light transmission is arranged below the dummy electrode, which can reduce the risk of interference between the touch signal and the display signal in the substrate, thereby ensuring the touch and display functions of the display panel.

[0008] For example, the orthographic projection of the dummy electrode on the substrate is located within the orthographic projection of the first region on the substrate.

[0009] For example, the orthographic projection of the first region on the substrate is located within the orthographic projection of the dummy electrode on the substrate.

[0010] In a specific embodiment of the first aspect of the present disclosure, a light-emitting device includes a first electrode, a light-emitting functional layer, and a second electrode stacked sequentially on a substrate, with the light-emitting functional layer located in a first opening. An isolation structure includes a support portion and a crown portion, the support portion being located between the crown portion and the substrate. The support portion and the crown portion enclose the first opening and the second opening, and an orthographic projection of the support portion on the substrate is located between an orthographic projection of the crown portion on the substrate.

[0011] Optionally, the support portion is a conductive structure, and the second electrode is located in the first opening and connected to the support portion.

[0012] Optionally, the display panel also includes a pixel defining layer, wherein the pixel defining layer is located between the support portion and the substrate and is surrounded by a plurality of third openings corresponding to the first openings, the orthographic projections of the third openings on the substrate are located within the orthographic projections of the corresponding first openings on the substrate to expose the first electrode, and the edge portion of the first electrode is located between the pixel defining layer and the substrate.

[0013] In a specific embodiment of the first aspect of the present disclosure, the touch electrode also includes a plurality of parallel first touch electrodes and a plurality of parallel second touch electrodes, the first touch electrodes and the second touch electrodes cross each other and are spaced apart from the dummy electrodes, the first touch electrode includes a plurality of first connecting portions and a plurality of first touch electrode blocks spaced apart from each other by the second touch electrodes, the first touch electrode blocks of the same first touch electrode are connected to each other through the first connecting portions, the second touch electrode includes a plurality of second connecting portions and a plurality of second touch electrode blocks spaced apart from each other by the first touch electrodes, the second touch electrode blocks of the same second touch electrode are connected to each other through the second connecting portions, the first touch electrode, the second touch electrode blocks and the dummy electrodes are on the same layer and made of the same material, the second connecting portions cross each other and are spaced apart from each other.

[0014] In a specific implementation of the first aspect of the present disclosure, at least one dummy electrode is located within the first touch electrode block and / or the second touch electrode block.

[0015] In the above solution, the provision of the dummy electrodes can reduce the design area of ​​the first touch electrode block and the second touch electrode block, thereby increasing the sensitivity of the touch function of the touch structure and reducing the load when driving the touch electrodes.

[0016] Optionally, dummy electrodes are provided on the inner sides of all the first touch electrode blocks and the second touch electrode blocks, or dummy electrodes corresponding to the first area are provided on the inner sides of at least one first touch electrode block and / or the second touch electrode block, and no dummy electrodes are provided in the first touch electrode blocks and / or the second touch electrode blocks that do not correspond to the first area.

[0017] In a specific embodiment of the first aspect of the present disclosure, at least one dummy electrode is located between the first touch electrode block and the second touch electrode block.

[0018] In the above scheme, the dummy electrode can separate the first touch electrode block and the second touch electrode block to reduce the risk of the first touch electrode block and the second touch electrode block being connected together; in addition, at least a portion of the dummy electrode can be used to prepare a signal line connected to the first touch electrode or the second touch electrode, so that the signal line of the touch structure is arranged in the display area, thereby reducing the border of the display panel.

[0019] In a specific embodiment of the first aspect of the present disclosure, the shape of the edge of the first touch electrode block and / or the second touch electrode block adjacent to the dummy electrode is the same as the shape of the edge of the dummy electrode.

[0020] Optionally, the edge of the dummy electrode is curved. In this design, the curved edge can alleviate optical diffraction, interference, and other phenomena at the edge of the dummy electrode, thereby reducing optically visible phenomena at the edge of the dummy electrode (the shape regularity causes the optical phenomenon to be visually visible).

[0021] In a specific embodiment of the first aspect of the present disclosure, the touch electrode comprises a transparent conductive material. This design can simplify the fabrication process of the touch electrode, and the touch electrode does not block light from the light-emitting device, thereby ensuring a viewing angle of the display panel.

[0022] In another specific embodiment of the first aspect of the present disclosure, the touch electrode is a grid-shaped electrode, and the meshes of the grid-shaped electrode correspond to the first opening and the second opening, respectively. The orthographic projections of the meshes on the substrate coincide with or are located within the orthographic projections of the corresponding first opening and the second opening on the substrate. Optionally, the touch electrode is made of metal.

[0023] In the above scheme, the grid-shaped electrode will not block the light output of the light-emitting device, and this design can remove the restrictions on the preparation materials of the touch electrode, so that the touch electrode can use materials with high conductivity such as metal to reduce the load when driving the touch electrode.

[0024] In a specific embodiment of the first aspect of the present disclosure, the display panel may further include a first encapsulation layer, which is located on the side of the display functional layer away from the substrate and includes a plurality of encapsulation units corresponding to the first openings respectively, and at least part of the encapsulation units fills the corresponding first openings.

[0025] In a specific embodiment of the first aspect of the present disclosure, the display panel also includes a second encapsulation layer and a third encapsulation layer covering the first encapsulation layer, the second encapsulation is located between the first encapsulation layer and the third encapsulation layer, the touch structure is located on the side of the third encapsulation layer facing away from the substrate, the first encapsulation layer and the third encapsulation layer are inorganic film layers, the second encapsulation layer is an organic film layer, and the surface of the second encapsulation layer facing away from the substrate is a plane.

[0026] In a specific embodiment of the first aspect of the present disclosure, the first regions are provided in a plurality and are spaced apart from each other and are evenly arranged in the display area. In this design, the display panel can be applied in the field of transparent display.

[0027] In another specific embodiment of the first aspect of the present disclosure, the display area further includes a second area, the light transmittance of the second area is lower than that of the first area, and the isolation structure and touch structure are also located in the second area. In this design, the display panel can be applied to scenarios such as under-screen camera, fingerprint recognition, and infrared ranging, and the first area can be correspondingly designed as a camera area, fingerprint recognition area, infrared detection area, etc.

[0028] Optionally, the dummy electrodes located in the second region are different in size from the dummy electrodes located in the first region.

[0029] Optionally, an orthographic projection area of ​​the dummy electrode located in the second region on the substrate is smaller than an orthographic projection area of ​​the dummy electrode located in the first region on the substrate.

[0030] Optionally, the dummy electrodes located in the second region have different shapes from the dummy electrodes located in the first region.

[0031] Optionally, all the second openings are located in the first region.

[0032] The first aspect of the present disclosure also provides a display panel, including a display area, the display area including at least one first area, wherein the display panel includes: a substrate; a display function layer, located on the substrate and including a plurality of light-emitting devices; an isolation structure, located on the substrate and in the display area, wherein the isolation structure includes a plurality of first openings and a plurality of second openings located in the first area, the first openings defining the light-emitting devices; and a touch structure, located on a side of the isolation structure away from the substrate, and including a touch electrode, wherein the touch electrode includes a dummy electrode, and the orthographic projection of at least one second opening on the substrate is located within the orthographic projection of the outer boundary of the dummy electrode on the substrate.

[0033] The first aspect of the present disclosure also provides a display panel, including a display area, the display area including at least one first area, wherein the display panel includes: a substrate; a display function layer, located on the substrate and including a plurality of light-emitting devices; an isolation structure, located on the substrate and in the display area, wherein the isolation structure includes a plurality of first openings and a plurality of second openings located in the first area, and the first openings define the light-emitting devices; and a touch structure, located on a side of the isolation structure away from the substrate, and including a touch electrode, wherein the touch electrode includes a dummy electrode, and the orthographic projection of the first area on the substrate overlaps with the orthographic projection of the dummy electrode on the substrate.

[0034] Optionally, the orthographic projection of the first region on the substrate is located within the orthographic projection of the dummy electrode on the substrate, or the orthographic projection of the dummy electrode on the substrate is located within the orthographic projection of the first region on the substrate.

[0035] A second aspect of the present disclosure provides a display device, which may include the display panel in the first aspect.

[0036] In another specific embodiment of the second aspect of the present disclosure, the display area also includes a second area, and the transmittance of the second area is less than the transmittance of the first area, and the display device also includes at least one identification device corresponding to the first area, wherein the orthographic projection of the first area on the substrate coincides with the orthographic projection of the identification device on the substrate, or the orthographic projection of the identification device on the substrate is located within the orthographic projection of the first area on the substrate.

[0037] Optionally, the dummy electrode in the first region has the same shape as the identification device corresponding to the first region.

[0038] Optionally, the display device further includes a foam layer, which is located on the side of the substrate in the display panel away from the display function layer. The foam layer includes a light-transmitting opening, and the orthographic projection of the identification device on the substrate is located within the orthographic projection of the light-transmitting opening on the substrate.

[0039] In another specific embodiment of the second aspect of the present disclosure, the display device also includes a foam layer, which is located on the side of the substrate in the display panel facing away from the display function layer. The foam layer includes a light-transmitting opening, and the orthographic projection of the identification device on the substrate is located within the orthographic projection of the light-transmitting opening on the substrate.

[0040] BRIEF DESCRIPTION OF THE DRAWINGS

[0041] FIG1 is a schematic diagram of a planar structure of a display panel provided by an embodiment of the present disclosure.

[0042] FIG. 2 is an enlarged view of the S1 region of the display panel shown in FIG. 1 under a design, which illustrates a planar design of the isolation structure in the display panel.

[0043] FIG. 3 is a cross-sectional view of the display panel shown in FIG. 2 along line M1 - N1 under one design.

[0044] FIG4 is a schematic diagram of a planar structure of a touch electrode layer in a display panel provided by an embodiment of the present disclosure.

[0045] FIG. 5 is a cross-sectional view of the touch electrode shown in FIG. 4 along line M2 - N2 .

[0046] FIG6 is a schematic diagram of a planar structure of the touch electrode shown in FIG4 without considering the dummy electrode.

[0047] FIG. 7 is a cross-sectional view of the touch electrode layer shown in FIG. 6 along line M3 - N3 .

[0048] FIG8 is a planar structural diagram illustrating the positional relationship between a touch electrode block and a first region in a display panel provided by an embodiment of the present disclosure.

[0049] FIG9 is a planar structural diagram illustrating the positional relationship between a touch electrode block and a first region in a display panel provided by an embodiment of the present disclosure.

[0050] FIG10 is a planar structural diagram illustrating the positional relationship between a touch electrode block and a first region in another display panel provided by an embodiment of the present disclosure.

[0051] FIG11 is a planar structural diagram illustrating the positional relationship between a touch electrode block and a first region in another display panel provided by an embodiment of the present disclosure.

[0052] FIG. 12 is a schematic diagram of an enlarged structure of the first region 13 b and the surrounding touch electrodes in FIG. 11 under one design.

[0053] FIG. 13 is a schematic diagram of an enlarged structure of the first region 13 b and the surrounding touch electrodes in FIG. 11 under another design.

[0054] FIG14 is a cross-sectional view of the display panel shown in FIG2 along M1-N1 in another design, wherein the touch electrodes are configured as grid-shaped electrodes.

[0055] FIG. 15 is an enlarged view of the S1 region of the display panel shown in FIG. 1 under another design.

[0056] FIG16 is a cross-sectional view of a partial area of ​​a display panel provided by an embodiment of the present disclosure.

[0057] 17 to 22 are process diagrams of a method for manufacturing a display panel provided in one embodiment of the present disclosure.

[0058] FIG23 is a cross-sectional view of a display device provided in accordance with an embodiment of the present disclosure.

[0059] FIG24 is a structural diagram illustrating the positional relationship between a first area and an identification device in a display panel provided by an embodiment of the present disclosure.

[0060] Modes for Carrying Out the Invention

[0061] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this specification.

[0062] The display panel can have touch function while taking into account functions such as transparent display, under-screen recognition (fingerprint recognition, under-screen camera, infrared detection), etc. In this way, a light-transmitting area will be divided in the display panel, and light-transmitting holes will be set in the gaps between the sub-pixels in the light-transmitting area to achieve light transmission. However, in the area where the light-transmitting hole is located, signal interference may occur between the conductive structure used to realize the touch function (such as the touch electrode described below) and the underlying metal wiring and driving circuit (such as the driving circuit in the substrate described below), thereby resulting in poor touch or display function.

[0063] At least one embodiment of the present disclosure provides a display panel to at least solve the above-mentioned technical problems. The display panel includes a display area, and the display area includes at least one first area. In addition, the display panel also includes a substrate and a display function layer, an isolation structure and a touch structure located on the substrate. The display function layer is located on the substrate and includes a plurality of light-emitting devices. The isolation structure is located on the substrate and in the display area. The isolation structure includes a plurality of first openings and a plurality of second openings located in the first area, and the first openings define the light-emitting devices. The touch structure is located on the side of the isolation structure away from the substrate and includes a touch electrode. The touch electrode includes a dummy electrode, and the orthographic projection of at least one second opening on the substrate is located within the orthographic projection of the dummy electrode on the substrate. In this way, arranging the second opening for light transmission below the dummy electrode can reduce the risk of interference between the touch signal and the display signal in the substrate, so as to ensure the touch and display functions of the display panel.

[0064] The structure of a display panel and a display device according to at least one embodiment of the present disclosure is described in detail below with reference to the accompanying drawings. Furthermore, in these drawings, a spatial rectangular coordinate system is established with the substrate of the display panel as a reference to intuitively illustrate the positional relationships of the various components of the display panel. In this spatial rectangular coordinate system, the X-axis and Y-axis are parallel to the surface of the substrate, and the Z-axis is perpendicular to the surface of the substrate.

[0065] As shown in Figures 1 to 3, the display panel 10 has a display area 11 and a border area 12 surrounding the display area 11. The display area 11 includes a first area 13, and sub-pixels (the entity is a light-emitting device 220) such as R, G, and B are arranged in the display area 11. The first area 13 is configured to have a certain transmittance for under-screen recognition, video recording, or transparent display. In some embodiments of the present disclosure, some of the wiring in the border area 12 can be arranged in the display area 11, so that the border area 12 can be designed as a single-sided border.

[0066] The first area 13 can be set to at least one, for example, it can be set to three areas 13a, 13b and 13c as shown in Figure 1. The three areas can be used for different functions respectively. For example, area 13a can be used for under-screen fingerprint recognition, and area 13c can be used for infrared ranging.

[0067] The physical structure of the display panel 10 may include a substrate 100 , and a display function layer 200 , an isolation structure 210 , and a touch structure (the touch electrode 400 included therein is shown in the figure) located on the substrate 100 .

[0068] The display function layer 200 is located on the substrate 100 and includes a plurality of light-emitting devices 220 located in the display area 11. An isolation structure 210 is located on the substrate 100 and in the display area 11. The isolation structure 210 includes a plurality of first openings 201 and a plurality of second openings 202 located in the first region 13. The first openings 201 define the light-emitting devices 220. The touch control structure is located on the side of the isolation structure 210 facing away from the substrate 100 and includes a touch electrode 400. The touch electrode 400 includes a dummy electrode 401. The orthographic projection of at least one second opening 202 on the substrate 100 is located within the orthographic projection of the dummy electrode 401 on the substrate 100.

[0069] The dummy electrodes are used to optimize the touch electrode pattern to adjust its load and the electric field distribution during driving. Therefore, when dummy electrodes are provided in the touch electrodes, they exist independently and are not connected to the other electrodes in the touch electrodes. That is, when a driving signal (voltage) is applied to the touch electrodes, the driving signal is not applied to the dummy electrodes. In this way, even if the area where the dummy electrodes are located overlaps with the second opening for light transmission, the dummy electrodes will not pass through the second opening and interfere with the driving circuit in the substrate.

[0070] For example, as shown in Figures 1 to 3, the light-emitting device 220 includes a first electrode 221, a light-emitting functional layer 223, and a second electrode 222 stacked in sequence on the substrate 100, and the light-emitting functional layer 223 is located in the first opening 201. The light-emitting functional layer 223 may include a first common layer 2231, a light-emitting layer 2232, and a second common layer 2233, and the first common layer 2231, the light-emitting layer 2232, and the second common layer 2233 are stacked in sequence on the first electrode 221. The first common layer 2231 may include a hole injection layer, a hole transport layer, an electron blocking layer, etc. The second common layer 2232 may include an electron injection layer, an electron transport layer, a hole blocking layer, etc. The setting of the isolation structure 210 needs to make the first common layer 2231 (the main film layer causing current crosstalk) of each light-emitting device 220 electrically disconnected from each other.

[0071] For example, as shown in Figures 1 to 3, the isolation structure 210 may include a support portion 211 and a crown portion 212. The support portion 211 is located between the substrate 100 and the crown portion 212, and the orthographic projection of the support portion 211 on the substrate 100 is located within the orthographic projection of the crown portion 212 on the substrate 100. In this way, the isolation structure 210 is configured to be wide at the top and narrow at the bottom, so that the isolation structure 210 can block the light-emitting functional layer 223 of an adjacent light-emitting device (which includes a first common layer 2231, which is the main film layer causing current crosstalk), thereby reducing the current crosstalk problem of the adjacent light-emitting device 220.

[0072] In some designs of the present disclosure, the support portion 211 and the crown portion 212 can be designed as a multi-layer stacked structure as shown in Figure 3, which is convenient for adopting different materials respectively. For example, in the following embodiment, the support portion 211 is designed to be conductive, but the crown portion 212 is not limited to being designed to be conductive; or, in other designs of the present disclosure, the support portion 211 and the crown portion 212 can be set as an integrated structure to increase the firmness of the isolation structure 210.

[0073] In at least one embodiment of the present disclosure, as shown in FIG3 , the support portion 211 may be a conductive structure, and the second electrode 222 is located in the first opening 201 and connected to the support portion 211. In this way, the support portion 211 of the isolation structure 210 connects the second electrode 222 in series, so that the support portion 211 and the second electrode 222 constitute a common electrode for easy driving.

[0074] The material of the second electrode 222 can be a metal material. The smaller the thickness of the second electrode 222, the higher its transmittance, but the higher its resistivity. If the thickness of the second electrode 222 is too small, without setting an isolation structure, the voltage drop of the second electrode 222 (the common electrode in this case) will be too large. In the embodiment of the present disclosure, the second electrode 222 is connected to the conductive support part 211, which can remove the thickness restriction of the second electrode 222, so that the second electrode 222 has a smaller thickness and has a higher transmittance.

[0075] In at least one embodiment of the present disclosure, the support portion 211 may be a metal conductive structure. Metal materials have high electrical conductivity, which can reduce the voltage drop when driving the second electrode. Accordingly, metal materials can only be light-transmissive when the thickness is extremely thin (e.g., tens of nanometers). The isolation structure 220 requires a certain thickness to isolate the light-emitting functional layer 223 (including the first common layer 2231). Therefore, the support portion 211 in the isolation structure 220 is almost opaque. Therefore, only by providing the second opening 202 can the isolation structure 220 be made light-transmissive.

[0076] In some embodiments of the present disclosure, as shown in Figure 3, the display panel may further include a pixel defining layer 213, which is located between the isolation structure 210 and the substrate 100 and between the isolation structure 210 and the first electrode 221. The pixel defining layer 213 is defined by a plurality of third openings 203 corresponding to the first openings 201 to expose the first electrode 221. The orthographic projections of the third openings 203 on the substrate 100 are located within the orthographic projections of the corresponding first openings 201 on the substrate 100, so that the first electrode 221 can have a larger design area without contacting the support portion 211, so that the light-emitting device 220 has a larger effective light-emitting area.

[0077] In the embodiments of the present disclosure, there is no limitation on the specific structure of the touch electrode layer, and the touch electrode layer can be designed according to actual process requirements. The following describes different designs of the touch electrode layer through different embodiments, as follows.

[0078] In at least one embodiment of the present disclosure, as shown in Figures 3 to 7, the touch electrode 400 further includes a plurality of parallel first touch electrodes 410 and a plurality of parallel second touch electrodes 420. The first touch electrodes 410 and the second touch electrodes 420 intersect with each other and form a touch unit P at the intersection. Each touch unit P corresponds to a touch position coordinate, and the first touch electrodes 410 and the second touch electrodes 420 are spaced apart from the dummy electrode 401. The first touch electrode 410 includes a plurality of first connecting portions 412 and a plurality of first touch electrode blocks 411 spaced apart from each other by the second touch electrodes 420. The first touch electrode blocks 411 of the same first touch electrode 410 are connected to each other through the first connecting portions 412, and the second touch electrode blocks 411 of the same first touch electrode 410 are connected to each other through the first connecting portions 412. The touch electrode 420 includes a plurality of second connecting portions 422 and a plurality of second touch electrode blocks 421 separated from each other by the first touch electrodes 410. The second touch electrode blocks 421 of the same second touch electrode 420 are connected to each other via the second connecting portions 422. The first touch electrode 410, the second touch electrode blocks 421, and the dummy electrode 401 are formed from the same layer and the same material. That is, the first touch electrode 410, the second touch electrode blocks 421, and the dummy electrode 401 can be formed from a single continuous film layer. The second connecting portions 422 intersect and are separated from the first connecting portions 412. The intersection of the first connecting portion 412 and the second connecting portion 422 is the intersection of the first touch electrode 410 and the second touch electrode 420. The second connecting portion 422 can be located between the layer containing the first touch electrode 410 and the isolation structure, or on the side of the layer containing the first touch electrode 410 facing away from the isolation structure. For example, in an implementable process flow, a first conductive material layer can be first deposited and patterned to form a plurality of first touch electrodes 410 and a second touch electrode block 421 in a plurality of second touch electrodes 420, wherein the first conductive material layer is formed into a plurality of meshes so that the first touch electrodes 410 and the second touch electrode blocks 421 in the plurality of second touch electrodes 420 are both formed into grid-like electrodes; an insulating layer 430 is deposited to cover the first touch electrodes 410 and the second touch electrode blocks 421 in the plurality of second touch electrodes 420; the insulating layer 430 is patterned to form a through hole exposing the second touch electrode block 421; a second conductive material layer is deposited on the insulating layer 430 and patterned to form a second connecting portion 422 in the second touch electrode 420, and the second connecting portion 422 is connected to the second touch electrode block 421 through the through hole. In this design, the main parts of the first touch electrode 410 and the second touch electrode 420 are designed in the same layer, so there is no need to consider the mesh alignment problem of the two, which is beneficial to improving the light transmittance of the touch electrode layer 400.

[0079] In the embodiment of the present disclosure, there is no restriction on the size relationship between the dummy electrode 401 and the first area 13 . As long as the dummy electrode exists in the first area 13 , the dummy electrode 401 can alleviate the signal interference problem between touch and display.

[0080] If the area of ​​the dummy electrode 401 is too large, the area of ​​the touch electrode that implements the touch function will become smaller, resulting in a decrease in touch performance. To ensure touch performance, as shown in FIG8 , the area of ​​the first region 13 a is larger than the area of ​​the dummy electrode 401, and the orthographic projection of the dummy electrode 401 on the substrate is located within the orthographic projection of the first region 13 a on the substrate.

[0081] For example, as shown in FIG9 , the area of ​​the dummy electrode 401 is larger than the area of ​​the first region 13a, and the orthographic projection of the first region 13a on the substrate is within the orthographic projection of the dummy electrode 401 on the substrate. This can further alleviate the problem of signal interference between the touch control and the display. In the embodiments of the present disclosure, there are no restrictions on the location and specific shape of the dummy electrode in the touch electrode. The design can be based on the specific design requirements of the touch electrode and the distribution of the first region 13. The following describes several specific embodiments to illustrate several ways to configure the dummy electrode.

[0082] In some embodiments of the present disclosure, as shown in Figures 4 to 9, at least one dummy electrode 401 is located within the first touch electrode block 411 and / or the second touch electrode block 421. Thus, the provision of the dummy electrode 401 can reduce the design area of ​​the first touch electrode block 411 and the second touch electrode block 421, thereby increasing the sensitivity of the touch function of the touch structure and reducing the load when driving the touch electrode 400. It will be appreciated that by providing the dummy electrode 401, the design area of ​​the first touch electrode block 411 and the second touch electrode block 421 can be reduced, thereby reducing the capacitance formed at the touch unit. Therefore, when a touch operation is performed (e.g., a finger approaches), the capacitance change (ratio) caused by the touch operation will also be greater, making the touch easier to identify, that is, the touch sensitivity is increased.

[0083] For example, in some designs, as shown in FIG. 4 to FIG. 9 , dummy electrodes 401 are disposed inside all the first touch electrode blocks 411 and the second touch electrode blocks 421 .

[0084] For example, in other designs, a dummy electrode 401 corresponding to the first area 13 is arranged on the inner side of at least one first touch electrode block 411 and / or the second touch electrode block 421, and no dummy electrode 401 is arranged in the first touch electrode block 411 and / or the second touch electrode block 421 that does not correspond to the first area 13, that is, the setting position of the dummy electrode is determined according to the position of the first area 13. It can be understood that the dummy electrode is set due to the setting requirements of the first area 13.

[0085] In other embodiments of the present disclosure, at least one dummy electrode 401 is located between the first touch electrode block 411 and the second touch electrode block 421. Thus, the dummy electrode 401 can separate the first touch electrode block 411 and the second touch electrode block 421, thereby reducing the risk of the first touch electrode block 411 and the second touch electrode block 421 being connected together. Furthermore, at least a portion of the dummy electrode 401 can be used to prepare a signal line connected to the first touch electrode 410 or the second touch electrode 420, so that the signal lines of the touch structure are arranged in the display area, thereby reducing the bezel of the display panel.

[0086] In at least one embodiment of the present disclosure, the planar shape of the dummy electrode can be designed based on the planar shape of the first region 13. That is, the shape of the edge of the first touch electrode block 411 and / or the second touch electrode block 421 adjacent to the dummy electrode 401 is the same as the shape of the edge of the dummy electrode 401. As shown in Figures 10 and 11, the edge of the dummy electrode 401 and the edge of the first region 13 are both circular.

[0087] For example, in at least one embodiment of the present disclosure, as shown in Figures 12 and 13, the edge of the dummy electrode 401 is curved. In this design, the curved edge can alleviate optical diffraction, interference, and other phenomena at the edge of the dummy electrode 401, thereby reducing optically visible phenomena at the edge of the dummy electrode 401 (optical phenomena are visually visible due to the regular shape).

[0088] In the embodiments of the present disclosure, the “curve shape” may include a wave shape, a sawtooth shape, and the like.

[0089] In the embodiments of the present disclosure, two designs coexist: the edge of the dummy electrode is conformal to the edge of the first region 13, and the edge of the dummy electrode is designed to be curved. "Conformal" refers to the similarity of shape in the macroscopic scope, while "curved" refers to the design at the microscopic level. For example, Figure 12 is an enlarged view of the structure of region 13a and its surroundings shown in Figure 11. In Figure 11, the overall shape of the first region 13 (region 13b) and the dummy electrode 401 are both rectangular at the macroscopic level and the shapes of the two are roughly similar. In Figure 12, the edge shape of the dummy electrode 401 is curved (sawtooth shape) at the microscopic level.

[0090] In the embodiments of the present disclosure, to ensure light transmittance, the touch electrodes may be designed to be made of a transparent conductive material, or designed to be a grid structure to avoid blocking light emitted by the light emitting device.

[0091] For example, in some embodiments of the present disclosure, referring back to FIG. 3 , the touch electrode 400 may be made of a transparent conductive material. This design simplifies the fabrication process for the touch electrode 400 and prevents the touch electrode 400 from blocking light from the light-emitting device 220, thereby ensuring a consistent viewing angle for the display panel. For example, the transparent conductive material may be ITO or the like.

[0092] For example, in other embodiments of the present disclosure, as shown in Figures 13 and 14, the touch electrode 400 is a grid-shaped electrode, and the meshes of the grid-shaped electrode correspond to the first opening 201 and the second opening 202, respectively. The orthographic projections of the meshes on the substrate 100 coincide with the orthographic projections of the corresponding first opening 201 and the second opening 202 on the substrate 100, or are located within the orthographic projections of the corresponding first opening 201 and the second opening 202 on the substrate 100. Optionally, the material of the touch electrode 400 includes metal. The grid-shaped electrode does not block the light emitted by the light-emitting device 220, and this design removes restrictions on the material used to make the touch electrode 400, thereby allowing the touch electrode 400 to be made of a highly conductive material such as metal, thereby reducing the load when driving the touch electrode 400.

[0093] In at least one embodiment of the present disclosure, as shown in FIG14 , the display panel may further include a first encapsulation layer 310, which is located on a side of the display function layer 200 facing away from the substrate 100 and includes a plurality of encapsulation units corresponding to the first openings 201, with at least a portion of the encapsulation units filling the corresponding first openings 201. The first encapsulation layer 310 protects the film layer of the light-emitting device 220 during the manufacturing process of the display panel. The light-emitting devices 220 with different colors of emitted light are manufactured independently, but the film layer (evaporated film layer such as the light-emitting function layer 223, etc.) in each light-emitting device 220 is evaporated on the entire surface of the display panel during the evaporation process. For example, the light-emitting devices 220 are classified as light-emitting devices that emit red light (R), green light (G), and blue light (B), respectively. During the preparation process, the light-emitting devices R, G, and B are prepared in sequence. When preparing the light-emitting device R, a light-emitting device R is formed in each first opening. A first encapsulation layer 310 is prepared on the display panel to cover the light-emitting device G. Then, the first encapsulation layer 310 in some of the first openings (used to form the light-emitting devices G and B in the final product) and the cathode and light-emitting functional layer 223 of the light-emitting device R are removed. During this process, the first encapsulation layer 310 is used to protect the light-emitting devices R in other first openings. Based on this method, the light-emitting devices G and B are prepared in sequence, and finally the first encapsulation layer 310 as shown in Figure 3 is formed. During the above preparation process, the first encapsulation layer 310 in the second opening 202 can be removed to further increase the transmittance of the first region 13.

[0094] The light-emitting devices in the display panel can be set to emit light of the same color (for example, blue light, white light), and a light conversion layer (for example, quantum dots and other materials that can change the color of light), a color film, etc. are set on the light-emitting side of the display panel so that the display panel can display color images. In this case, the first encapsulation layer 310 can also be set to a continuous whole layer structure, and is not limited to being composed of multiple encapsulation units as shown in Figure 14.

[0095] In a specific embodiment of the first aspect of the present disclosure, the display panel also includes a second encapsulation layer 320 and a third encapsulation layer 330 covering the first encapsulation layer 310, the second encapsulation is located between the first encapsulation layer 310 and the third encapsulation layer 330, the touch structure is located on the side of the third encapsulation layer 330 facing away from the substrate 100, the first encapsulation layer 310 and the third encapsulation layer 330 are inorganic film layers, the inorganic layers have high density to isolate water and oxygen, the second encapsulation layer 320 is an organic film layer, and the surface of the second encapsulation layer 320 facing away from the substrate 100 is a plane.

[0096] In at least one embodiment of the present disclosure, as shown in FIG14 , the substrate 100 may include a substrate and a driving circuit layer located on the substrate, the driving circuit layer including a plurality of pixel driving circuits located in the display area, and the display function layer being located on the driving circuit layer. For example, the pixel driving circuit may include a plurality of transistors TFTs, capacitors, and the like, such as 2T1C (i.e., 2 transistors (TFTs) and 1 capacitor (C)), 3T1C, or 7T1C. The pixel driving circuit is connected to the light-emitting device 200 to control the switching state and the light-emitting brightness of the light-emitting device 220.

[0097] For example, as shown in FIG. 16 , the display panel may further include structures such as an optical film 500 , a cover plate 600 , and the like.

[0098] In the embodiment of the present disclosure, there is no limitation on the arrangement of pixels in the display panel and the specific arrangement of the second openings in the first region, and they can be designed according to actual process requirements.

[0099] For example, in some embodiments of the present disclosure, referring again to FIG. 2 , the sub-pixels may be arranged in a matrix into multiple rows and columns, and the second openings 202 for transmitting light may be provided between adjacent rows and between adjacent columns.

[0100] For example, in other embodiments of the present disclosure, as shown in FIG15 , sub-pixels are arranged in multiple rows and columns, and the sub-pixels in adjacent rows are arranged in an alternating manner, and the sub-pixels in adjacent columns are arranged in an alternating manner, and a second opening 202 for transmitting light is provided in the gap between every four adjacent sub-pixels.

[0101] In the embodiment of the present disclosure, there is no restriction on the distribution of the first area set in the display area, and it can be designed according to the application scenario of the display panel.

[0102] For example, in some embodiments of the present disclosure, the first regions are provided in a plurality and spaced apart from each other, and are evenly distributed in the display area. In this design, the display panel can be applied to the field of transparent displays. For example, in this design, the dummy electrodes can be evenly distributed in the display area.

[0103] For example, in other embodiments of the present disclosure, referring back to FIG. 1 , the display area 11 further includes a second region 14, the transmittance of the second region 14 being lower than that of the first region 13, and the isolation structure and touch-sensing structure are also located in the second region 14. Optionally, when the display area includes the second region 14, all second openings 202 are located in the first region 13, and no second openings 202 are provided in the second region 14. In this design, the display panel can be applied to scenarios such as under-screen camera, fingerprint recognition, and infrared ranging, and the first region 13 can be correspondingly designed as a camera area, fingerprint recognition area, infrared detection area, etc. Recognition devices such as cameras, fingerprint recognition devices, and infrared ranging devices can be located in locations corresponding to the first region 13. Optionally, when the display area includes the second region 14, the dummy electrodes located in the second region 14 are different in size from those located in the first region 13. This allows the size of the dummy electrodes in the second region 14 to be unrestricted by the size of the dummy electrodes in the first region 13. The dummy electrodes in the second region 14 can have the same size, and the size of the dummy electrodes in the first region 13 can be related to the size of the identification device at the corresponding position in the first region 13. For example, the size of the dummy electrodes in the first region 13 can be the same as or close to the size of the identification device at the corresponding position in the first region 13. The shape of the dummy electrodes in the first region 13 can be the same as the shape of the identification device corresponding to the first region 13.

[0104] Optionally, when the display area includes the second area 14, the orthographic projection area of ​​the dummy electrode located in the second area 14 on the substrate is smaller than the orthographic projection area of ​​the dummy electrode located in the first area 13 on the substrate. In this way, the design area of ​​the part of the touch electrode used to realize the touch function can be guaranteed to ensure the accuracy of touch detection (for example, to avoid excessive touch sensitivity).

[0105] Optionally, when the display area includes the second area 14 , the shape of the dummy electrode located in the second area 14 is different from that of the dummy electrode located in the first area 13 , so that the shape of the dummy electrode in the second area 14 is not restricted by the dummy electrode in the first area 13 .

[0106] Next, the preparation process of the display panel shown in FIG. 14 is described in conjunction with FIG. 17 to FIG. 22 to intuitively demonstrate the principle that the isolation structure can increase the pixel arrangement density PPI.

[0107] As shown in FIG17 , a substrate 100 is provided and first electrodes 221 arranged in an array are formed on the substrate 100; an insulating material film layer (e.g., an inorganic material film layer) is deposited on the substrate 100 on which the first electrodes 221 are formed; a support portion 211 and a crown portion 212 are formed on the display panel, wherein a first opening 201 and a second opening 202 are formed; and a patterning process is performed on the insulating material film layer to form a pixel defining layer 213 (the planar shape of which is a grid), wherein the pixel defining layer 213 includes a third opening 203 and covers the gaps between adjacent first electrodes 221, so that the planar shape of the pixel defining layer 213 is a grid.

[0108] In an embodiment of the present disclosure, the patterning process may be a photolithography patterning process, which may include, for example, coating a photoresist on a structural layer to be patterned, exposing the photoresist using a mask, developing the exposed photoresist to obtain a photoresist pattern, etching the structural layer using the photoresist pattern (optionally wet etching or dry etching), and then optionally removing the photoresist pattern. In the case where the material of the structural layer (e.g., the photoresist pattern 700 described below) includes photoresist, the structural layer may be directly exposed through a mask to form the desired pattern.

[0109] As shown in FIG18 , a light-emitting functional layer and a second electrode are evaporated on the substrate 100 to form a light-emitting device 220 in each first opening 201 of the isolation structure 210. A fine metal mask is not used in the evaporation process, so the evaporated material is also deposited on the crown 212 and in the second openings 202. For example, the light-emitting functional layer in the evaporated light-emitting device 220 can emit red light (R). That is, at this stage, a light-emitting device 220 emitting blue light is formed in each first opening 201 and second opening 202 of the isolation structure 210.

[0110] As shown in FIG19 , a first encapsulation layer 310 is deposited to cover the light-emitting device 200. The first encapsulation layer 310 will cover the entire display area at this stage. A photoresist is formed (e.g., coated) on the first encapsulation layer 310, and then patterned to form a photoresist pattern 700. The photoresist pattern 700 only covers a portion of the first opening 201 of the isolation structure 210 (the first opening 201 where the light-emitting device B of the finished display panel is located).

[0111] As shown in FIG20 , the surface of the display panel is etched using the photoresist pattern 700 as a mask to remove the first encapsulation layer 310 , the second electrode and the light-emitting functional layer covered by the photoresist pattern 700 ; and then the remaining photoresist pattern 700 is removed.

[0112] As shown in FIG. 21 , the steps shown in FIG. 17 to FIG. 20 are repeated to form light emitting devices 220 emitting green light and blue light in other first openings 201 , respectively.

[0113] As shown in FIG. 22 , a second encapsulation layer 320 and a third encapsulation layer 330 are formed on the first encapsulation layer 310 .

[0114] Referring again to FIG. 14 , the touch electrode 400 is prepared on the third encapsulation layer 330 . The preparation process thereof can be referred to the relevant description in the aforementioned embodiment and will not be described in detail here.

[0115] In some embodiments of the present disclosure, some film layers in the light-emitting functional layer, such as the light-emitting layer, can be prepared using a non-evaporation method such as inkjet printing. The specific method can be selected based on the material of these film layers. For example, when these film layers are made of polymer materials and are not suitable for evaporation, inkjet printing can be used to prepare them.

[0116] At least one embodiment of the present disclosure provides a display device, which may include the display panel of the above embodiment. In addition, when the first area is an identification area, the display device may include an identification device, the orthographic projection of the identification device on the substrate at least partially overlapping with the first area.

[0117] For example, in some embodiments of the present disclosure, referring again to Figures 1 and 23, the display area 11 also includes a second area 14, and the transmittance of the second area 14 is less than the transmittance of the first area 13, and the display device also includes at least one identification device 20 corresponding to the first area 13, the identification device 20 is located on the side of the substrate 100 of the display panel away from the isolation structure, and the orthographic projection of the first area 13 on the substrate 100 coincides with the orthographic projection of the identification device 20 on the substrate 100, or, the orthographic projection of the identification device 20 on the substrate 100 is located within the orthographic projection of the first area 13 on the substrate 100.

[0118] For example, in some embodiments of the present disclosure, as shown in FIG23 , the identification device 20 includes at least one fingerprint sensor. For example, the fingerprint sensor can be disposed on the side of the substrate facing away from the display function layer, or it can be disposed within the substrate. As shown in FIG24 , the first region 13 has multiple second openings 202 , and the orthographic projection of the identification device 20 on the substrate 100 is located within the orthographic projection of the first region 13 on the substrate 100.

[0119] For example, in other embodiments of the present disclosure, the identification device 20 may be a functional device such as a camera, an infrared ranging device, etc. These functional devices may be located on a side of the substrate away from the display functional layer.

[0120] In at least one embodiment of the present disclosure, as shown in Figure 23, the display device also includes a foam layer 30, which is located on the side of the substrate in the display panel away from the display function layer. The foam layer 30 includes a light-transmitting opening 31, and the orthographic projection of the identification device 20 on the substrate is located within the orthographic projection of the light-transmitting opening 31 on the substrate.

[0121] For example, in the embodiments of the present disclosure, the display device may be any product or component with a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, or a navigator.

[0122] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent replacements, etc. made within the spirit and principles of this specification should be included in the scope of protection of this specification.

Claims

1. A display panel, comprising a display area, wherein the display area comprises at least one first region, wherein: The display panel comprises: substrate; A display function layer, located on the substrate and comprising a plurality of light-emitting devices; an isolation structure located on the substrate and in the display area, wherein the isolation structure includes a plurality of first openings and a plurality of second openings located in the first area, the first openings defining the light emitting device; and The touch structure is located on a side of the isolation structure away from the substrate and includes a touch electrode, wherein the touch electrode includes a dummy electrode, and an orthographic projection of at least one of the second openings on the substrate is located within an orthographic projection of the dummy electrode on the substrate.

2. The display panel according to claim 1, wherein: An orthographic projection of the first region on the substrate overlaps with an orthographic projection of the dummy electrode on the substrate.

3. The display panel according to claim 2, wherein: The orthographic projection of the dummy electrode on the substrate is located within the orthographic projection of the first region on the substrate; or The orthographic projection of the first region on the substrate is located within the orthographic projection of the dummy electrode on the substrate.

4. The display panel according to any one of claims 1 to 3, wherein: The light emitting device comprises a first electrode, a light emitting functional layer and a second electrode sequentially stacked on the substrate, wherein the light emitting functional layer is located in the first opening; as well as The isolation structure includes a support portion and a crown portion, wherein the support portion is located between the crown portion and the base, the support portion and the crown portion surround the first opening and the second opening, and the orthographic projection of the support portion on the base is located between the orthographic projections of the crown portion on the base.

5. The display panel according to claim 4, wherein: The support portion is a conductive structure, and the second electrode is located in the first opening and connected to the support portion.

6. The display panel according to claim 5, wherein: The display panel also includes a pixel defining layer, wherein the pixel defining layer is located between the supporting portion and the substrate and is surrounded by a plurality of third openings corresponding to the first openings respectively, the orthographic projections of the third openings on the substrate are located within the orthographic projections of the corresponding first openings on the substrate to expose the first electrode, and an edge portion of the first electrode is located between the pixel defining layer and the substrate.

7. The display panel according to any one of claims 1 to 6, wherein: The touch electrodes further include a plurality of parallel first touch electrodes and a plurality of parallel second touch electrodes, wherein the first touch electrodes and the second touch electrodes intersect each other and are spaced apart from the dummy electrodes. The first touch electrode includes a plurality of first connecting portions and a plurality of first touch electrode blocks spaced apart from each other by the second touch electrodes, the first touch electrode blocks of the same first touch electrode are connected to each other via the first connecting portions, the second touch electrode includes a plurality of second connecting portions and a plurality of second touch electrode blocks spaced apart from each other by the first touch electrodes, the second touch electrode blocks of the same second touch electrode are connected to each other via the second connecting portions, and The first touch electrode block, the second touch electrode block and the dummy electrode are in the same layer and made of the same material, and the second connecting portion and the first connecting portion cross each other and are spaced apart from each other.

8. The display panel according to claim 7, wherein: At least one of the dummy electrodes is located within the first touch electrode block and / or the second touch electrode block.

9. The display panel according to claim 8, wherein: The dummy electrodes are arranged inside all the first touch electrode blocks and the second touch electrode blocks, or the dummy electrodes corresponding to the first area are arranged inside at least one of the first touch electrode blocks and / or the second touch electrode blocks, and the dummy electrodes are not arranged in the first touch electrode blocks and / or the second touch electrode blocks that do not correspond to the first area; and / or At least one of the dummy electrodes is located between the first touch electrode block and the second touch electrode block.

10. The display panel according to claim 7, wherein: The shape of the edge of the first touch electrode block and / or the second touch electrode block adjacent to the dummy electrode is the same as the shape of the edge of the dummy electrode; Preferably, the edge of the dummy electrode is in a curved shape.

11. The display panel according to any one of claims 1 to 6, wherein: The material of the touch electrode includes a transparent conductive material; or The touch electrode is a grid-shaped electrode, and the mesh holes of the grid-shaped electrode correspond to the first opening and the second opening respectively. The orthographic projection of the mesh holes on the substrate coincides with the orthographic projection of the corresponding first opening and the second opening on the substrate, or is located within the orthographic projection of the corresponding first opening and the second opening on the substrate. Preferably, the material of the touch electrode includes metal.

12. The display panel according to any one of claims 1 to 6, wherein: Also includes: A first encapsulation layer is located on a side of the display function layer away from the substrate and includes a plurality of encapsulation units corresponding to the first openings, wherein at least a portion of the encapsulation units fills the corresponding first openings; Preferably, the display panel further comprises a second encapsulation layer and a third encapsulation layer covering the first encapsulation layer, the second encapsulation is located between the first encapsulation layer and the third encapsulation layer, the touch structure is located on a side of the third encapsulation layer away from the substrate, and The first encapsulation layer and the third encapsulation layer are inorganic film layers, the second encapsulation layer is an organic film layer, and a surface of the second encapsulation layer facing away from the substrate is a plane.

13. The display panel according to any one of claims 1 to 6, wherein: The first areas are multiple and spaced apart from each other and evenly arranged in the display area; or The display area further includes a second area, the light transmittance of the second area is lower than the light transmittance of the first area, and the isolation structure and the touch control structure are also located in the second area; Preferably, the dummy electrodes located in the second region are different in size from the dummy electrodes located in the first region; Preferably, the orthographic projection area of ​​the dummy electrode located in the second region on the substrate is smaller than the orthographic projection area of ​​the dummy electrode located in the first region on the substrate; Preferably, the dummy electrodes located in the second region are different in shape from the dummy electrodes located in the first region; Preferably, all of the second openings are located in the first region.

14. A display panel, comprising a display area, wherein the display area comprises at least one first region, wherein: The display panel comprises: substrate; A display function layer, located on the substrate and comprising a plurality of light-emitting devices; an isolation structure located on the substrate and in the display area, wherein the isolation structure includes a plurality of first openings and a plurality of second openings located in the first area, the first openings defining the light emitting device; and A touch structure is located on a side of the isolation structure away from the substrate and includes a touch electrode, wherein the The touch electrode includes a dummy electrode, and an orthographic projection of at least one of the second openings on the substrate is located within an orthographic projection of an outer boundary of the dummy electrode on the substrate.

15. A display panel, comprising a display area, wherein the display area comprises at least one first region, wherein: The display panel comprises: substrate; A display function layer, located on the substrate and comprising a plurality of light-emitting devices; an isolation structure located on the substrate and in the display area, wherein the isolation structure includes a plurality of first openings and a plurality of second openings located in the first area, the first openings defining the light emitting device; and The touch structure is located on a side of the isolation structure away from the substrate and includes a touch electrode, wherein the touch electrode includes a dummy electrode, and an orthographic projection of the first area on the substrate overlaps with an orthographic projection of the dummy electrode on the substrate. 16 . The display panel according to claim 15 , wherein the orthographic projection of the first region on the substrate is located within the orthographic projection of the dummy electrode on the substrate, or the orthographic projection of the dummy electrode on the substrate is located within the orthographic projection of the first region on the substrate.

17. A display device comprising the display panel according to any one of claims 1 to 16.

18. The display device according to claim 17, further comprising at least one identification device corresponding to the first area, wherein: The orthographic projection of the first area on the substrate coincides with the orthographic projection of the identification device on the substrate, or the orthographic projection of the identification device on the substrate is located within the orthographic projection of the first area on the substrate.

19. The display device according to claim 18, wherein: The dummy electrode in the first region has the same shape as the identification device corresponding to the first region.

20. The display device according to claim 18 or 19, wherein: The display device also includes a foam layer, which is located on the side of the substrate in the display panel away from the display function layer. The foam layer includes a light-transmitting opening, and the orthographic projection of the identification device on the substrate is located within the orthographic projection of the light-transmitting opening on the substrate.

Images