Display panel, preparation method of display panel and display equipment

Abstract

The invention provides a display panel, a preparation method of the display panel and display equipment, the display panel comprises a substrate, an isolation structure, a light-emitting layer, a detection structure and a first packaging layer, the isolation structure is arranged on one side of the substrate, at least part of the isolation structure is enclosed to form an isolation opening, the light-emitting layer comprises a plurality of light-emitting devices, and the detection structure is arranged on the first packaging layer. Light-emitting functional layers of at least part of the light-emitting devices are located in the isolation openings; the detection structure is located on one side, deviating from the substrate, of the isolation structure and used for providing detection signals; the first packaging layer is arranged on the side, away from the substrate, of the detection structure, and the orthographic projection of the first packaging layer on the substrate covers the orthographic projection of the detection structure on the substrate. Therefore, the detection structure is arranged below the first packaging layer, and the thickness of a relatively thick film layer of the first packaging layer can be compatible with the thickness of a film layer of the detection structure, so that the thickness of an extra detection function film layer does not need to be increased, and the thickness of the display panel is effectively reduced.

Description

Technical Field

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

[0002] With the development of display technology, display panels are becoming more and more popular. Taking the common touch-screen smart mobile terminals as an example, their increasingly high screen-to-body ratio design brings users a more extreme visual experience than ever before.

[0003] At the same time, people are paying more and more attention to the thinness and lightness of display panels. Summary of the invention

[0004] In view of this, the present application is dedicated to providing a display panel, a method for preparing a display panel, and a display device, which can effectively reduce the thickness of the display panel.

[0005] In a first aspect, the present application provides a display panel, comprising:

[0006] substrate;

[0007] An isolation structure is located on one side of the substrate, and at least a portion of the isolation structure encloses an isolation opening;

[0008] A light-emitting layer, comprising a plurality of light-emitting devices, wherein at least a portion of the light-emitting functional layers of the light-emitting devices are located in the isolation openings;

[0009] A detection structure, located at a side of the isolation structure away from the substrate, the detection structure being used to provide a detection signal;

[0010] The first packaging layer is located on a side of the detection structure away from the substrate; the orthographic projection of the first packaging layer on the substrate covers the orthographic projection of the detection structure on the substrate.

[0011] Optionally, a second encapsulation layer is also included;

[0012] The second encapsulation layer is located between the first encapsulation layer and the light-emitting layer;

[0013] Optionally, the light emitting device further comprises a first electrode disposed on a side of the light emitting functional layer away from the substrate, and a second electrode on a side of the light emitting functional layer close to the substrate;

[0014] The first electrode is located in the isolation opening;

[0015] Optionally, the first electrode and the detection structure are made of the same material;

[0016] Optionally, the orthographic projection of the detection structure on the substrate is located within the orthographic projection of the isolation structure on the substrate.

[0017] Optionally, the isolation opening includes a first isolation opening and a second isolation opening; the second encapsulation layer includes a first encapsulation unit and a second encapsulation unit;

[0018] The first packaging unit covers a surface of the first electrode in the first isolation opening facing away from the substrate and a surface of the isolation structure facing away from the substrate; the second packaging unit covers a surface of the first electrode in the second isolation opening facing away from the substrate;

[0019] Optionally, the light emitting device comprises a first light emitting device and a second light emitting device; the light emitting function layer and the first electrode of the first light emitting device are located in the first isolation opening; the light emitting function layer and the first electrode of the second light emitting device are located in the second isolation opening.

[0020] Optionally, the detection structure comprises: a first detection electrode and a second detection electrode;

[0021] The second packaging unit also covers a surface of the first detection electrode that is away from the substrate; the second detection electrode is located on a side of the second packaging unit that is away from the substrate;

[0022] Optionally, the isolation opening further includes a third isolation opening; the light-emitting device further includes a third light-emitting device; the light-emitting function layer and the first electrode of the third light-emitting device are located in the third isolation opening;

[0023] Optionally, the first electrode in the second isolation opening is prepared synchronously with the first detection electrode and is made of the same material;

[0024] Optionally, the first electrode in the third isolation opening is manufactured synchronously with the second detection electrode and is made of the same material.

[0025] Optionally, the first detection electrode includes a plurality of first detection electrode portions arranged at intervals along a first direction; the second detection electrode includes a plurality of second detection electrode portions arranged at intervals along a second direction;

[0026] Optionally, the first direction intersects the second direction;

[0027] Optionally, the first direction is perpendicular to the second direction.

[0028] Optionally, a detection chip is also included;

[0029] The plurality of first detection electrode portions are respectively connected to the detection chip through a plurality of first wires; and the plurality of second detection electrode portions are respectively connected to the detection chip through a plurality of second wires;

[0030] Optionally, the detection chip is used to provide a driving signal to the first detection electrode portion, and to provide a sensing signal to the second detection electrode portion.

[0031] Optionally, the first detection electrode portion includes a plurality of first electrode blocks and a first electrode line; the plurality of first electrode blocks are sequentially connected through the first electrode line;

[0032] The second detection electrode portion includes a plurality of second electrode blocks and second electrode lines; the plurality of second electrode blocks are sequentially connected through the second electrode lines.

[0033] Optionally, the shapes of the orthographic projections of the first electrode block and the second electrode block on the substrate are both hollow shapes;

[0034] Optionally, the orthographic projections of the first electrode block and the second electrode block on the substrate are both in the shape of circular rings.

[0035] Optionally, the orthographic projection of the first electrode line on the substrate and the orthographic projection of each of the second electrode lines on the substrate each have and only have one intersection point, and the overlapping area is the intersection point.

[0036] Optionally, the detection structure includes a plurality of third detection electrode blocks;

[0037] Optionally, a plurality of the third detection electrode blocks are arranged in an array;

[0038] Optionally, the orthographic projection of the third detection electrode block on the substrate is located within the orthographic projection of the isolation structure on the substrate.

[0039] Optionally, the orthographic projection of the detection structure on the substrate is located within the orthographic projection of the isolation structure on the substrate.

[0040] Optionally, it further includes an insulating layer located on one side of the substrate;

[0041] A plurality of pixel openings are provided on the insulating layer, wherein the pixel openings expose at least a portion of the second electrode, the pixel openings are connected to the isolation openings, and the light-emitting functional layer of the light-emitting device is located in the pixel openings;

[0042] Optionally, the isolation structure is located on a side of the insulating layer away from the substrate; or,

[0043] The insulating layer is further provided with a receiving opening, and the isolation structure is located in the receiving opening of the insulating layer; or,

[0044] The insulating layer comprises a plurality of insulating parts arranged at intervals, the insulating parts cover the side edges of the second electrode and are arranged in a ring shape around the side edges of the second electrode, and the isolation structure is located in the intervals between adjacent insulating parts;

[0045] Optionally, the insulating layer includes a pixel defining layer.

[0046] Optionally, it further includes a third encapsulation layer located on a side of the first encapsulation layer away from the substrate;

[0047] The orthographic projection of the third encapsulation layer on the substrate covers the substrate.

[0048] In a second aspect, the present application provides a display panel, including:

[0049] substrate;

[0050] A light-emitting layer, located on one side of the substrate;

[0051] A detection structure, located on a side of the light-emitting layer away from the substrate, for providing a detection signal;

[0052] The first packaging layer is located on a side of the detection structure away from the substrate; the orthographic projection of the first packaging layer on the substrate covers the orthographic projection of the detection structure on the substrate.

[0053] In a third aspect, the present application provides a method for preparing a display panel, comprising:

[0054] providing a substrate;

[0055] An isolation structure, a light-emitting layer, a detection structure and a first packaging layer are sequentially formed on the substrate; at least part of the isolation structure encloses an isolation opening; the light-emitting layer includes a plurality of light-emitting devices, and at least part of the light-emitting functional layers of the light-emitting devices are located in the isolation opening; the detection structure is used to provide a detection signal; the orthographic projection of the first packaging layer on the substrate covers the orthographic projection of the detection structure on the substrate.

[0056] Optionally, the light emitting device includes a first light emitting device, a second light emitting device and a third light emitting device; the isolation opening includes a first isolation opening and a second isolation opening; and the forming process of the detection structure includes:

[0057] A first packaging material layer is formed on the first light-emitting device, and the first packaging material layer is patterned to obtain a first packaging unit of a second packaging layer; the first packaging unit covers a surface of the first light-emitting device facing away from the substrate and a surface of the isolation structure facing away from the substrate;

[0058] forming a first electrode material layer on the first packaging unit, and patterning the first electrode material layer to form a first electrode and a first detection electrode of the second light-emitting device;

[0059] forming a second packaging material layer on the first detection electrode, and patterning the second packaging material layer to obtain a second packaging unit of the second packaging layer, wherein the second packaging unit covers a surface of the second light-emitting device facing away from the substrate;

[0060] A second electrode material layer is formed on the second packaging unit, and the second electrode material layer is patterned to form a first electrode and a second detection electrode of a third light emitting device.

[0061] In a fourth aspect, the present application further provides a display device, comprising the display panel as described in the first aspect or the second aspect of the present application.

[0062] In the solution of the present application, the display panel includes a substrate, an isolation structure, a light-emitting layer, a detection structure and a first encapsulation layer, wherein the isolation structure is arranged on one side of the substrate, at least part of the isolation structure encloses an isolation opening, the light-emitting layer includes a plurality of light-emitting devices, and at least part of the light-emitting functional layers of the light-emitting devices are located in the isolation opening; the detection structure is located on the side of the isolation structure away from the substrate, and is used to provide a detection signal; the first encapsulation layer is arranged on the side of the detection structure away from the substrate, and its orthographic projection on the substrate covers the orthographic projection of the detection structure on the substrate. In this way, by arranging the detection structure under the first encapsulation layer, the thicker film thickness of the first encapsulation layer can be used to be compatible with the film thickness of the detection structure, so that there is no need to increase the thickness of the additional detection functional film layer, which effectively reduces the thickness of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0064] Figure 1 is a structural schematic diagram of a display panel provided by an embodiment of the present application;

[0065] Figure 2 is a structural schematic diagram of a display panel provided by another embodiment of the present application;

[0066] Figure 3 is a structural schematic diagram of a display panel provided by another embodiment of the present application;

[0067] Figure 4 is a structural schematic diagram of a display panel provided by another embodiment of the present application;

[0068] Figure 5 It is a schematic diagram of a planar structure of a detection structure provided by an embodiment of the present application;

[0069] Figure 6 is a schematic diagram of a planar structure of a detection structure provided by another embodiment of the present application;

[0070] Figure 7 is a schematic diagram of a planar structure of a detection structure provided by another embodiment of the present application;

[0071] Figure 8 is a structural schematic diagram of a display panel provided by another embodiment of the present application;

[0072] Fig. 9 is a structural schematic diagram of a display panel provided by another embodiment of the present application;

[0073] Fig.10 It is a schematic diagram of a process of manufacturing a display panel provided by an embodiment of the present application;

[0074] Fig.11 is a schematic flow chart of a method for preparing a display panel provided in another embodiment of the present application;

[0075] Fig.12 It is a structural schematic diagram of a display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0076] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0077] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0078] 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 described embodiments 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 creative work are within the scope of protection of this specification.

[0079] With the rapid development of display technology, display panels have broad application space in the fields of automotive, mobile phones, tablets, computers and TVs. Touch / fingerprint recognition function has become one of the standard features of most display panels, among which capacitive touch / fingerprint recognition display panels are widely used.

[0080] Taking capacitive touch display panels as an example, capacitive touch display panels can include self-capacitive touch panels and mutual-capacitive touch panels, etc. The principle is to use tools such as fingers or styluses to generate capacitance between the touch display panel, and use the electrical signal formed by the capacitance change before and after the touch to confirm whether the touch display panel is touched and confirm the touch coordinates.

[0081] Currently, for capacitive touch / fingerprint recognition display panels, how to reduce the thickness of the display panel has always been the focus of attention.

[0082] To this end, the present application provides a solution that can effectively reduce the thickness of the display panel. A detection structure is set on the isolation structure, and the detection structure is used to provide a detection signal. The capacitance value of the detection signal is used to characterize the biological information or position information of the operating body. The detection structure can be used to realize touch detection or fingerprint recognition detection. In addition, the detection structure is set between the first packaging layer and the substrate. While realizing the touch function or fingerprint recognition function, the thicker film thickness of the first packaging layer can be used to be compatible with the film thickness of the detection structure, thereby eliminating the need to increase the thickness of the additional detection function film layer, thereby effectively reducing the thickness of the display panel.

[0083] Specifically, as an optional implementation of the contents disclosed in the present application, an embodiment of the present application provides a display panel. Figure 1is a schematic diagram of the structure of a display panel provided by an embodiment of the present application, such as Figure 1 As shown, the display panel may at least include: a substrate 10 , an isolation structure 11 , a light-emitting layer 14 , a detection structure 12 and a first encapsulation layer 13 .

[0084] The substrate 10 mainly plays the role of supporting and bearing. Specifically, the substrate 10 can be a rigid substrate such as a glass substrate or a silicon substrate, or a flexible substrate such as stainless steel (SUS) or flexible polyimide (PI). That is to say, the display panel in the embodiment of the present application can be a non-bendable rigid display panel or a bendable flexible display panel.

[0085] The light emitting layer 14 includes a plurality of light emitting devices 141 .

[0086] like Figure 2 As shown, the isolation structure 11 is located on one side of the substrate 10, and at least part of the isolation structure 11 encloses an isolation opening K. Specifically, the isolation structure 11 can enclose a plurality of isolation openings K, and the light-emitting functional layer 1411 of the light-emitting device 141 is located in the isolation opening K. In this way, the light-emitting functional layer 1411 of each light-emitting device 141 can be isolated by the isolation structure 11, thereby obtaining each independent sub-pixel.

[0087] It should be noted that the international application with application number PCT / CN2023 / 134518 and the Chinese patent applications with application numbers 202310759370.2, 202310740412.8, 202310707209.0, 202311346196.5, and 202310855006.6 record the relevant technologies of the isolation structure, and their contents are incorporated into this application by reference for reference.

[0088] like Figure 2 As shown, the light emitting device 141 may further include a first electrode 1412 and a second electrode 1413; the first electrode 1412 is located on the side of the light emitting functional layer 1411 away from the substrate 10, and the second electrode 1413 is located on the side of the light emitting functional layer 1411 close to the substrate 10. The first electrode 1412 is located in the isolation opening K.

[0089] Specifically, the light-emitting functional layer 1411 may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer and an electron injection layer stacked in sequence on the side of the second electrode 1413 facing away from the substrate 10. The first electrode 1412 is disposed on the side of the electron injection layer facing away from the substrate 10.

[0090] Among them, the light-emitting functional layer 1411 may include a material having electroluminescence (EL) performance (hereinafter referred to as the light-emitting material). The second electrode 1413 may also be called an anode, which is used to provide holes to the light-emitting functional layer 1411, and the first electrode 1412 may also be called a cathode, which is used to provide electrons to the light-emitting functional layer. The holes provided by the second electrode 1413 and the electrons provided by the first electrode 1412 can excite the light-emitting material of the light-emitting functional layer 1411 to emit light after being recombined in the light-emitting functional layer 1411. The hole injection layer and the hole transport layer can be made of a material with high hole mobility, so that the holes generated by the second electrode 1413 are better transferred to the light-emitting functional layer 1411. Similarly, the electron injection layer and the electron transport layer can be made of a material with high electron mobility, so that the electrons generated by the first electrode 1412 are better transferred to the light-emitting functional layer 1411.

[0091] The detection structure 12 is located on the side of the isolation structure 11 away from the substrate 10. The detection structure 12 can be used to provide a detection signal. The detection signal is a detection capacitor. The capacitance value of the detection capacitor is used to characterize the biological information or position information of the operating body.

[0092] The biological information of the operating body may be fingerprint information of the operating body; and the position information of the operating body may refer to touch information of the operating body.

[0093] Specifically, the detection structure 12 can be a touch structure or a fingerprint recognition structure. Accordingly, when the detection structure 12 is a touch structure, the touch structure can be used to provide a touch capacitor, and the capacitance value of the touch capacitor is used to characterize the touch information of the operating body (such as a user), and the touch information can reflect the touch position. When the detection structure 12 is a fingerprint recognition structure, the fingerprint recognition structure can be used to provide a fingerprint recognition capacitor, and the capacitance value of the fingerprint recognition capacitor can be used to characterize the fingerprint recognition information of the operating body (such as a user), and the fingerprint recognition information can identify the identity of the operating body.

[0094] In this way, by disposing the detection structure 12 on the side of the isolation structure 11 facing away from the substrate 10 , the detection function of the display panel can be realized, that is, the touch control and / or fingerprint recognition function of the display panel can be realized.

[0095] During implementation, the detection structure 12 and the first electrode 1412 can be prepared using the same material, and during the manufacturing process, the detection structure 12 and the first electrode 1412 can be formed using the same process, thereby simplifying the manufacturing process and improving the manufacturing efficiency.

[0096] The orthographic projection of the correspondingly formed detection structure 12 on the substrate 10 is located within the orthographic projection of the isolation structure 11 on the substrate 10 , thereby ensuring the mutual independence of the first electrode 1412 and the detection structure 12 .

[0097] In addition, the material of the detection structure 12 is consistent with that of the first electrode 1412, which can prevent the setting of the detection structure 12 from affecting the light transmittance, thereby ensuring sufficient light transmittance when the detection structure 12 is a fingerprint recognition structure, thereby improving the accuracy of fingerprint recognition.

[0098] The first encapsulation layer 13 is located on the side of the detection structure 12 facing away from the substrate 10 ; the orthographic projection of the first encapsulation layer 13 on the substrate 10 covers the orthographic projection of the detection structure 12 on the substrate 10 .

[0099] The first packaging layer 13 can be used to package the detection structure 12, the isolation structure 11 and the light-emitting device 141, thereby preventing moisture intrusion from damaging the light-emitting display of the light-emitting device 141 and further affecting the display effect and service life of the display panel.

[0100] Furthermore, in order to ensure the encapsulation effect, the first encapsulation layer 13 needs to have a sufficient encapsulation thickness. The detection structure 12 is disposed between the first encapsulation layer 13 and the substrate 10. The thickness of the first encapsulation layer 13 can be compatible with the film thickness of the detection structure. In particular, for display panels with touch functions and / or fingerprint recognition functions, there is no need to increase the thickness of the additional corresponding functional film layer, thereby effectively reducing the thickness of the display panel.

[0101] In implementation, the material of the first encapsulation layer 13 may be an organic material or an inorganic material. Preferably, the first encapsulation layer 13 may be an organic encapsulation film formed by inkjet printing to improve the encapsulation effect.

[0102] In some embodiments, Figure 3 As shown, the display panel may further include a second encapsulation layer 15 , and the second encapsulation layer 15 is located between the first encapsulation layer 13 and the light emitting layer 14 .

[0103] Specifically, the second encapsulation layer 15 may include at least a first encapsulation unit 15 a and a second encapsulation unit 15 b .

[0104] The isolation opening K may include at least a first isolation opening K1 and a second isolation opening K2 .

[0105] The first packaging unit 15a covers the surface of the first electrode in the first isolation opening K1 away from the substrate 10 and the surface of the isolation structure 11 away from the substrate 10; the second packaging unit 15b covers the surface of the first electrode in the second isolation opening K2 away from the substrate 10.

[0106] It should be understood that the first encapsulation unit 15a covers the surface of the first electrode in the first isolation opening K1 facing away from the substrate 10, that is, the first encapsulation unit 15a realizes the independent encapsulation of the light-emitting device corresponding to the position of the first isolation opening K1; similarly, the second encapsulation unit 15b covers the surface of the first electrode in the second isolation opening K2 facing away from the substrate 10, that is, the second encapsulation unit 15b realizes the independent encapsulation of the light-emitting device corresponding to the position of the second isolation opening K2. In addition, the first encapsulation unit 15a covers the surface of the isolation structure 11 facing away from the substrate 10, which can further isolate the isolation structure 11 from external water vapor, and prevent water vapor from invading along the boundary of the isolation structure 11, thereby damaging the light-emitting device. In addition, while the second encapsulation layer 15 is used to realize the independent encapsulation of the light-emitting device and the encapsulation of the surface of the isolation structure 11 facing away from the substrate 10, the second encapsulation layer 15 can also play the role of blocking the light-emitting device 141 from the detection structure 12, and blocking the isolation structure 11 from the detection structure 12, thereby ensuring the detection effect and display effect.

[0107] In implementation, the light emitting device 141 may include a first light emitting device, a second light emitting device, and a third light emitting device. The first light emitting device may be a red light emitting device, the second light emitting device may be a green light emitting device, and the third light emitting device may be a blue light emitting device. Accordingly, the first isolation opening K1 and the second isolation opening K2 may be used to set the light emitting function layer 1411 and the first electrode 1412 of any two of the first light emitting device, the second light emitting device, and the third light emitting device.

[0108] In some embodiments, the isolation opening K may further include a third isolation opening, and the second encapsulation layer 15 may further include a third encapsulation unit; the first isolation opening, the second isolation opening, and the third isolation opening may be used to respectively set the light-emitting functional layer and the first electrode of the first light-emitting device, the second light-emitting device, and the third light-emitting device. The third encapsulation unit covers the surface of the first electrode in the third isolation opening that is away from the substrate 10. In this way. The second encapsulation layer 15 can be used to achieve independent encapsulation of each light-emitting device 141, further improving the encapsulation effect.

[0109] In some embodiments, Figure 4 As shown, the detection structure 12 may include a first detection electrode 12a and a second detection electrode 12b; the second packaging unit 15b also covers the surface of the first detection electrode 12a facing away from the substrate 10; the second detection electrode 12b is located on the side of the second packaging unit 15b facing away from the substrate 10.

[0110] The second packaging unit 15b covers the surface of the first detection electrode 12a facing away from the substrate 10, and can isolate the first detection electrode 12a and the second detection electrode 12b, thereby ensuring that the detection structure 12 can realize the corresponding detection function.

[0111] During implementation, the first detection electrode 12a can be used as a driving electrode for receiving a driving signal, and the second detection electrode 12b can be used as a sensing electrode for receiving a sensing signal. In this way, the detection function of the display panel is realized by mutual capacitance.

[0112] For example, the detection structure 12 is a touch structure, the first detection electrode 12a can be used as a touch driving electrode for receiving a touch driving signal; the second detection electrode 12b can be used as a touch sensing electrode for receiving a touch sensing signal, thereby realizing the touch function of the display panel through mutual capacitance.

[0113] For another example, the detection structure 12 is a fingerprint recognition structure, the first detection electrode 12a can be used as a fingerprint recognition drive electrode for receiving a fingerprint recognition drive signal; the second detection electrode 12b can be used as a fingerprint recognition sensing electrode for receiving a fingerprint recognition sensing signal, thereby realizing the fingerprint recognition function of the display panel through mutual capacitance.

[0114] During application, the first electrode in the second isolation opening is prepared synchronously with the first detection electrode and is made of the same material, which can simplify the preparation process, improve preparation efficiency, and save preparation costs.

[0115] Similarly, the first electrode and the second detection electrode in the third isolation opening are prepared simultaneously and are made of the same material, which can also simplify the preparation process, improve the preparation effect, and save the preparation cost.

[0116] In order to ensure the effective implementation of the touch function or fingerprint recognition function, in some implementations, such as Figure 5 As shown, the first detection electrode 12a may include a plurality of first detection electrode portions a1 arranged at intervals along the first direction X; the second detection electrode 12b may include a plurality of second detection electrode portions b1 arranged at intervals along the second direction Y.

[0117] During implementation, the first direction X may intersect with the second direction Y to achieve a mutual capacitive touch function.

[0118] Alternatively, the first direction X may be perpendicular to the second direction Y. In this way, a structural basis is provided for realizing the touch / fingerprint recognition function.

[0119] In some embodiments, Figure 6 As shown, the display panel may further include a detection chip IC.

[0120] The plurality of first detection electrode portions a1 are respectively connected to the detection chip IC through the plurality of first wires a2; and the plurality of second detection electrode portions b1 are respectively connected to the detection chip IC through the plurality of second wires b2; the detection chip IC is used to provide a driving signal to the first detection electrode portions a1, and provide a sensing signal to the second detection electrode portions b1. In this way, the mutual capacitive touch / fingerprint recognition function can be realized based on the control of the detection chip IC.

[0121] In some implementations, still Figure 6 As shown, the first detection electrode part a1 may include a plurality of first electrode blocks a11 and first electrode lines a12; the plurality of first electrode blocks a11 are sequentially connected through the first electrode lines a12; the second detection electrode part b1 may include a plurality of second electrode blocks b11 and second electrode lines b12; the plurality of second electrode blocks b11 are sequentially connected through the second electrode lines b12. The plurality of first electrode blocks a11 and first electrode lines a12, and the plurality of second electrode blocks b11 and second electrode lines b12 are staggered to improve detection accuracy.

[0122] Specifically, the size of the first electrode block a11 and the second electrode block b11 can be set according to actual needs. For example, if the detection structure 12 is used to realize the fingerprint recognition function, the first electrode block a11 and the second electrode block b11 can be set as smaller electrode blocks, and the electrode blocks are arranged more densely, which can realize accurate capture of fingerprint information in high pixel density scenes; if the detection structure 12 is used to realize the touch function, the first electrode block a11 and the second electrode block b11 can be set as larger electrode blocks to realize the capture of the touch position.

[0123] In implementation, the plurality of first electrode blocks a11 and first electrode lines a12, as well as the plurality of second electrode blocks b11 and second electrode lines b12, can be prepared using the same material and preparation process, for example, the electrode material layer is etched to form the first detection electrode portion a1 or the second detection electrode portion b1. In this way, there is no need to configure additional wires for connection, which simplifies the preparation process and reduces the preparation cost.

[0124] In some embodiments, Figure 7 As shown, the shapes of the orthographic projections of the first electrode block a11 and the second electrode block b11 on the substrate 10 may both be hollow shapes.

[0125] Designing the orthographic projections of the first electrode block a11 and the second electrode block b11 on the substrate 10 as a hollow shape can reduce the area of ​​the orthographic projections of the first electrode block a11 and the second electrode block b11 on the substrate 10. Compared with a non-hollow shape, it can reduce the load between the isolation structure 11 while ensuring the fingerprint recognition signal amount.

[0126] For example, the orthographic projections of the first electrode block a11 and the second electrode block b11 on the substrate 10 are both closed circular rings or circular rings with gaps, or the orthographic projection of one of the first electrode block a11 and the second electrode block b11 on the substrate 10 is a closed circular ring.

[0127] In some implementations, still Figure 7 As shown, the orthographic projection of the first electrode line a12 on the substrate 10 and the orthographic projection of each second electrode line b12 on the substrate have only one intersection point, and the overlapping area is the intersection point.

[0128] It should be understood that when the orthographic projection of the first electrode line a12 on the substrate 10 and the orthographic projection of each second electrode line b12 on the substrate 10 have one and only one intersection, and the overlapping area is the intersection, the overlapping area of ​​the orthographic projection of the first electrode line a12 and the second electrode line b12 on the substrate 10 is the smallest, and it can be regarded as that the orthographic projection of the first electrode line a12 on the substrate 10 is maximally staggered from the overlap with the orthographic projection of the second electrode line b12 on the substrate 10.

[0129] Specifically, the first electrode line a12 and the second electrode line b12 are staggered as much as possible in the orthographic projection direction, which can reduce the overlapping capacitance of the two layers of electrode lines, thereby ensuring that the capacitance of the area where the electrode block they are connected is the main capacitance, which is easy to detect and identify.

[0130] Of course, the present application is not limited thereto, and in some other implementations, the detection structure may also be a single-layer electrode structure.

[0131] The electrode structure may include a plurality of third detection electrode blocks arranged in an array, and the orthographic projection of the third detection electrode block on the substrate is located within the orthographic projection of the isolation structure on the substrate. The display panel may also include a metal layer between the electrode structure and the substrate. The metal layer is grounded and can be used as a reference electrode layer to form a self-capacitive sensing structure with the electrode structure. The film layer position of the metal layer in the display panel can be set according to actual needs, and it only needs to ensure that the metal layer can be used as a reference electrode layer.

[0132] When the electrode structure is a touch electrode structure, the third detection electrode block can be used to receive a touch drive signal, thereby realizing the touch function through self-capacitance; when the electrode structure is a fingerprint recognition structure, the third detection electrode block can be used to receive a fingerprint recognition drive signal, thereby realizing the fingerprint recognition function through self-capacitance.

[0133] In some embodiments, Figure 8As shown, the display panel may further include an insulating layer 16 located on one side of the substrate 10; a plurality of pixel openings R are provided on the insulating layer 16, the pixel openings R expose a partial area of ​​the second electrode 1413, the pixel openings R are connected to the isolation openings K, and the light-emitting functional layer 1411 of the light-emitting device 141 is located within the pixel openings R.

[0134] During implementation, the isolation structure 11 is located on a side of the insulation layer facing away from the substrate 10 .

[0135] In some other embodiments, a receiving opening may be further provided on the insulating layer 16, and the isolation structure 11 is located in the receiving opening of the insulating layer 16; alternatively, the insulating layer 16 may include a plurality of insulating portions arranged at intervals, the insulating portions covering the side edges of the second electrode 1413 and being arranged in a ring shape around the side edges of the second electrode 1413, and the isolation structure 11 is located in the intervals between adjacent insulating portions.

[0136] The insulating property of the insulating layer 16 can insulate the second electrode 1413 from the isolation structure 11. In addition, since the area of ​​the second electrode 1413 of the light-emitting device 141 exposed by the pixel opening R is the light-emitting area of ​​the light-emitting device 141, the pixel opening R of the insulating layer 16 can better define the light-emitting area.

[0137] When applicable, the insulating layer 16 may include a pixel defining layer.

[0138] In some embodiments, Fig. 9 As shown, the display panel may further include a third encapsulation layer 17 located on a side of the first encapsulation layer 13 facing away from the substrate 10 ; the orthographic projection of the third encapsulation layer 17 on the substrate 10 covers the substrate 10 .

[0139] When used, the second encapsulation layer 15 and the third encapsulation layer 17 can be made of inorganic materials, and the first encapsulation layer 13 can be made of organic materials. The first encapsulation layer 13 made of organic materials is located between the second encapsulation layer 15 made of inorganic materials covering the surface of the first electrode 1412 on the side away from the substrate 10 and the third encapsulation layer 17, and can form an encapsulation structure, which can better isolate water and oxygen and improve the encapsulation effect.

[0140] As another optional implementation of the contents disclosed in the present application, an embodiment of the present application further provides a display panel, comprising: a substrate; a light-emitting layer, located on one side of the substrate; a detection structure, located on the side of the light-emitting layer away from the substrate, for providing a detection signal, the detection signal comprising a detection capacitor, the capacitance value of the detection capacitor being used to characterize the biological information and / or position information of the operating body; a first encapsulation layer, located on the side of the detection structure away from the substrate; the orthographic projection of the first encapsulation layer on the substrate covers the orthographic projection of the detection structure on the substrate.

[0141] The substrate mainly plays the role of supporting and bearing. Specifically, the substrate can be a rigid substrate such as a glass substrate or a silicon substrate, or a flexible substrate such as stainless steel (SUS) or flexible polyimide (PI). In other words, the display panel in the embodiment of the present application can be a non-bendable rigid display panel or a bendable flexible display panel.

[0142] In this embodiment, a detection structure is set up, the detection structure is used to provide a detection signal, and the capacitance value of the detection signal is used to characterize the biological information and / or position information of the operating body. The detection structure can be used to realize detection functions such as touch or fingerprint recognition. In addition, the detection structure is set between the first packaging layer and the substrate. While realizing the touch function or fingerprint recognition function, the thicker film thickness of the first packaging layer can be used to be compatible with the film thickness of the detection structure, thereby eliminating the need to increase the thickness of the additional detection function film layer, thereby effectively reducing the thickness of the display panel.

[0143] In some embodiments, the display panel may further include an isolation structure located on the side of the light-emitting layer away from the substrate; at least part of the isolation structure encloses an isolation opening; the light-emitting layer includes a plurality of light-emitting devices; and the light-emitting functional layer of the light-emitting device is located in the isolation opening. In this arrangement, the light-emitting functional layer of each light-emitting device can be isolated by the isolation structure, thereby obtaining each independent sub-pixel.

[0144] In some implementations, the light emitting device may further include a first electrode disposed on a side of the light emitting functional layer away from the substrate, and a second electrode disposed on a side of the light emitting functional layer close to the substrate; the first electrode is located in the isolation opening.

[0145] Specifically, the light-emitting functional layer may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer and an electron injection layer stacked in sequence on the side of the second electrode facing away from the substrate. The first electrode is arranged on the side of the electron injection layer facing away from the substrate.

[0146] Wherein, the light-emitting functional layer may include a light-emitting material. The second electrode may also be referred to as an anode, which is used to provide holes to the light-emitting functional layer, and the first electrode may also be referred to as a cathode, which is used to provide electrons to the light-emitting functional layer. The holes provided by the second electrode and the electrons provided by the first electrode may excite the light-emitting material of the light-emitting functional layer to emit light after being recombined in the light-emitting functional layer. The hole injection layer and the hole transport layer may be made of a material with high hole mobility, so that the holes generated by the second electrode are better transferred to the light-emitting functional layer. Similarly, the electron injection layer and the electron transport layer may be made of a material with high electron mobility, so that the electrons generated by the first electrode are better transferred to the light-emitting functional layer.

[0147] The detection structure is located on a side of the isolation structure away from the substrate. The detection structure can be used to provide a detection signal, and the capacitance value of the detection signal is used to characterize the biological information and / or position information of the operating body.

[0148] The biological information of the operating body may be fingerprint information of the operating body; and the position information of the operating body may refer to touch information of the operating body.

[0149] Specifically, the detection structure can be a touch structure or a fingerprint recognition structure. Accordingly, when the detection structure is a touch structure, the touch structure can be used to provide a touch capacitor, and the capacitance value of the touch capacitor is used to characterize the touch information of the operating body (such as a user), and the touch information can reflect the touch position. When the detection structure is a fingerprint recognition structure, the fingerprint recognition structure can be used to provide a fingerprint recognition capacitor, and the capacitance value of the fingerprint recognition capacitor can be used to characterize the fingerprint recognition information of the operating body (such as a user), and the fingerprint recognition information can identify the identity of the operating body.

[0150] In this way, by arranging the detection structure on the side of the isolation structure facing away from the substrate, the detection function of the display panel can be realized, that is, the touch control and / or fingerprint recognition function of the display panel can be realized.

[0151] During implementation, the detection structure and the first electrode can be prepared using the same material, and during the manufacturing process, the detection structure and the first electrode can be formed using the same process, thereby simplifying the manufacturing process and improving the manufacturing efficiency.

[0152] The orthographic projection of the correspondingly formed detection structure on the substrate is located within the orthographic projection of the isolation structure on the substrate, thereby ensuring that the first electrode and the detection structure are independent of each other.

[0153] In addition, the material of the detection structure is consistent with that of the first electrode, which can prevent the setting of the detection structure from affecting the light transmittance, thereby ensuring sufficient light transmittance when the detection structure is a fingerprint recognition structure, thereby improving the accuracy of fingerprint recognition.

[0154] The first packaging layer is located on the side of the detection structure away from the substrate; the orthographic projection of the first packaging layer on the substrate covers the substrate.

[0155] The first packaging layer can be used to package the detection structure, the isolation structure and the light-emitting device, thereby preventing water vapor from invading and damaging the light-emitting display of the light-emitting device, thereby affecting the display effect and service life of the display panel.

[0156] Furthermore, in order to ensure the packaging effect, the first packaging layer needs to have a sufficient packaging thickness. The detection structure is set between the first packaging layer and the substrate. The thickness of the first packaging layer can be compatible with the film thickness of the detection structure. In particular, for display panels with touch functions and / or fingerprint recognition functions, there is no need to increase the thickness of the additional corresponding functional film layer, thereby effectively reducing the thickness of the display panel.

[0157] During implementation, the material of the first encapsulation layer may be an organic material or an inorganic material. Preferably, the first encapsulation layer may be an organic encapsulation film formed by inkjet printing to improve the encapsulation effect.

[0158] As another optional implementation of the content disclosed in the present application, the embodiment of the present application further provides a method for preparing a display panel, such as Fig.10 As shown, the method for preparing the display panel may at least include the following steps:

[0159] S1001. Provide a substrate.

[0160] S1002. An isolation structure, a light-emitting layer, a detection structure and a first packaging layer are sequentially formed on a substrate; at least a portion of the isolation structure encloses an isolation opening; the light-emitting layer includes a plurality of light-emitting devices, and a light-emitting functional layer of the light-emitting device is located in the isolation opening; the detection structure is used to provide a detection signal; the orthographic projection of the first packaging layer on the substrate covers the orthographic projection of the detection structure on the substrate.

[0161] In this embodiment, the display panel includes a substrate, an isolation structure, a light-emitting layer, a detection structure and a first encapsulation layer, wherein the isolation structure is arranged on one side of the substrate, at least part of the isolation structure encloses an isolation opening, the light-emitting layer includes a plurality of light-emitting devices, and the light-emitting functional layer of the light-emitting device is located in the isolation opening; the detection structure is located on the side of the isolation structure away from the substrate, and is used to provide a detection signal; the first encapsulation layer is arranged on the side of the detection structure away from the substrate, and its orthographic projection on the substrate covers the orthographic projection of the detection structure on the substrate. In this way, the detection structure is arranged under the first encapsulation layer, and the thicker film thickness of the first encapsulation layer can be used to be compatible with the film thickness of the detection structure, so that there is no need to increase the thickness of the additional detection functional film layer, which effectively reduces the thickness of the display panel.

[0162] In some embodiments, the isolation opening may include a first isolation opening and a second isolation opening; the light emitting device may include a first light emitting device, a second light emitting device and a third light emitting device, and the first isolation opening and the second isolation opening may be used to respectively set the light emitting functional layers of any two of the three light emitting devices. Fig.11 As shown, the formation process of the detection structure may include the following steps:

[0163] S1101, forming a first packaging material layer on the first light-emitting device, and patterning the first packaging material layer to obtain a first packaging unit of the second packaging layer; the first packaging unit covers the surface of the first light-emitting device facing away from the substrate and the surface of the isolation structure facing away from the substrate.

[0164] In the embodiment of the present application, the preparation process of the display panel is described in detail by taking the example that the first isolation opening is used to set the light-emitting functional layer and the first electrode of the first light-emitting device, and the second isolation opening is used to set the light-emitting functional layer of the second light-emitting device.

[0165] Specifically, before forming the first packaging material layer on the isolation structure, it is necessary to form a light-emitting functional layer and a first electrode of the first light-emitting device in the first isolation opening, and then form the first packaging material layer on the isolation structure.

[0166] After forming the first packaging material layer on the isolation structure, in order to realize the packaging of independent pixels, that is, to realize the packaging of the first light-emitting device that has been prepared, the first packaging material layer needs to be patterned to obtain the first packaging unit of the second packaging layer. The first packaging unit covers the surface of the first electrode in the first isolation opening that is away from the substrate, which can realize the independent packaging of the first light-emitting device; the first packaging unit also covers the surface of the isolation structure that is away from the substrate, which can facilitate the subsequent preparation of the detection structure, thereby avoiding the connection between the subsequently prepared detection structure and the isolation structure, which affects the detection function and display effect of the display panel.

[0167] S1102 , forming a first detection electrode on the first packaging unit.

[0168] Specifically, when forming the first detection electrode on the first packaging unit, the light-emitting functional layer of the second light-emitting device can be firstly arranged in the second isolation opening. Then, a whole layer of the first electrode material layer is formed on the side of the light-emitting functional layer away from the substrate. The first electrode material layer is then patterned to obtain the first electrode of the second light-emitting device located in the second isolation opening, and the first detection electrode located on the side of the first packaging unit away from the substrate. In this way, while the preparation of the second light-emitting device is completed, the preparation of the first detection electrode is also completed, saving the process of preparing the first detection electrode separately, and the first detection electrode and the first electrode of the second light-emitting device are prepared with the same material, which can effectively save the preparation cost while simplifying the process flow.

[0169] S1103, forming a second packaging material layer on the first detection electrode, and patterning the second packaging material layer to obtain a second packaging unit of the second packaging layer, wherein the second packaging unit covers a surface of the second light-emitting device facing away from the substrate.

[0170] After forming the second light-emitting device and the first detection electrode on the first packaging unit, a whole second packaging material layer can be formed on the first detection electrode, and then the second packaging material layer is patterned to obtain a second packaging unit of the second packaging layer. The second packaging unit covers the surface of the first electrode in the second isolation opening that is away from the substrate, thereby realizing independent packaging of the second light-emitting device.

[0171] S1104 , forming a second detection electrode on the second packaging unit.

[0172] Specifically, the isolation opening may further include a third isolation opening, and the third isolation opening is used to arrange a light-emitting functional layer of a third light-emitting device.

[0173] After forming the light-emitting functional layer of the third light-emitting device in the third isolation opening, a whole second electrode material layer is formed on the second packaging unit, and then the second electrode material layer is patterned to form the first electrode of the third light-emitting device and the second detection electrode. After the preparation of the first detection electrode and the second detection electrode is completed, the preparation of the detection structure is also completed.

[0174] In this way, while completing the preparation of the third light-emitting device, the preparation of the second detection electrode is also completed, saving the process of separately preparing the second detection electrode, and the second detection electrode and the first electrode of the third light-emitting device are prepared with the same material, which can also effectively save preparation costs while simplifying the process flow.

[0175] It should be noted that after the preparation of the third light-emitting device is completed, a third packaging material layer needs to be formed on the side of the third light-emitting device away from the substrate, and the third packaging material layer needs to be patterned to form a packaging unit covering the surface of the first electrode in the third isolation opening away from the substrate, thereby realizing independent packaging of the third light-emitting device.

[0176] The structure of each layer of the display panel obtained by the preparation method and the corresponding description refer to the corresponding description of the display panel mentioned above.

[0177] As an optional implementation of the content disclosed in the present application, the embodiment of the present application further provides a display device, which includes: a display panel provided in any of the above embodiments. Fig.12 As shown, Fig.12 This is a schematic diagram of the structure of a display device provided in one embodiment of the present application. The display device may be a smart phone, a tablet computer, a digital camera, etc., which will not be described in detail here.

[0178] It should be noted that when the detection structure of the display panel is a touch structure, the touch structure is used to provide touch capacitance, the capacitance value of the touch capacitance is used to characterize the position information of the operating body, and the display panel is a touch display panel; when the detection structure of the display panel is a fingerprint recognition structure, the touch structure is used to provide fingerprint recognition capacitance, the capacitance value of the fingerprint recognition capacitance is used to characterize the biometric information (fingerprint recognition information) of the operating body, and the display panel is a display panel with fingerprint recognition function.

[0179] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0180] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure is located on one side of the substrate, and at least a portion of the isolation structure encloses an isolation opening; A light-emitting layer, comprising a plurality of light-emitting devices, wherein at least a portion of the light-emitting functional layers of the light-emitting devices are located in the isolation openings; A detection structure, located at a side of the isolation structure away from the substrate, the detection structure being used to provide a detection signal; A first packaging layer, located on a side of the detection structure away from the substrate; The orthographic projection of the first encapsulation layer on the substrate covers the orthographic projection of the detection structure on the substrate.

2. The display panel according to claim 1, characterized in that: Also comprising a second encapsulation layer; The second encapsulation layer is located between the first encapsulation layer and the light-emitting layer; Optionally, the light emitting device further comprises a first electrode disposed on a side of the light emitting functional layer away from the substrate, and a second electrode on a side of the light emitting functional layer close to the substrate; The first electrode is located in the isolation opening; Optionally, the first electrode and the detection structure are made of the same material; Optionally, the orthographic projection of the detection structure on the substrate is located within the orthographic projection of the isolation structure on the substrate.

3. The display panel according to claim 2, characterized in that: The isolation opening includes a first isolation opening and a second isolation opening that are adjacent to each other; the second encapsulation layer includes a first encapsulation unit and a second encapsulation unit; The first packaging unit covers a surface of the first electrode in the first isolation opening facing away from the substrate and a surface of the isolation structure facing away from the substrate; The second packaging unit covers a surface of the first electrode in the second isolation opening facing away from the substrate; Optionally, the light emitting device comprises a first light emitting device and a second light emitting device; The light-emitting functional layer and the first electrode of the first light-emitting device are located in the first isolation opening; The light emitting function layer and the first electrode of the second light emitting device are located in the second isolation opening.

4. The display panel according to claim 3, characterized in that: The detection structure comprises: a first detection electrode and a second detection electrode; The second packaging unit also covers a surface of the first detection electrode that is away from the substrate; the second detection electrode is located on a side of the second packaging unit that is away from the substrate; Optionally, the isolation opening further includes a third isolation opening; the light-emitting device further includes a third light-emitting device; the light-emitting function layer and the first electrode of the third light-emitting device are located in the third isolation opening; Optionally, the first electrode in the second isolation opening is prepared synchronously with the first detection electrode and is made of the same material; Optionally, the first electrode in the third isolation opening is manufactured synchronously with the second detection electrode and is made of the same material.

5. The display panel according to claim 4, characterized in that: The first detection electrode includes a plurality of first detection electrode portions arranged at intervals along a first direction; the second detection electrode includes a plurality of second detection electrode portions arranged at intervals along a second direction; Optionally, the first direction intersects the second direction; Optionally, the first direction is perpendicular to the second direction.

6. The display panel according to claim 5, characterized in that: Also includes a detection chip; The plurality of first detection electrode portions are respectively connected to the detection chip through a plurality of first wires; and the plurality of second detection electrode portions are respectively connected to the detection chip through a plurality of second wires; Optionally, the detection chip is used to provide a driving signal to the first detection electrode portion, and to provide a sensing signal to the second detection electrode portion.

7. The display panel according to claim 5, characterized in that: The first detection electrode portion includes a plurality of first electrode blocks and a first electrode line; the plurality of first electrode blocks are sequentially connected through the first electrode line; The second detection electrode portion includes a plurality of second electrode blocks and second electrode lines; the plurality of second electrode blocks are sequentially connected through the second electrode lines.

8. The display panel according to claim 7, characterized in that: The orthographic projections of the first electrode block and the second electrode block on the substrate are both hollow shapes; Optionally, the orthographic projections of the first electrode block and the second electrode block on the substrate are both in the shape of circular rings.

9. The display panel according to claim 7, characterized in that: The orthographic projection of the first electrode line on the substrate and the orthographic projection of each of the second electrode lines on the substrate each have and only have one intersection point, and the overlapping area is the intersection point.

10. The display panel according to claim 1, characterized in that: The detection structure includes a plurality of third detection electrode blocks; Optionally, a plurality of the third detection electrode blocks are arranged in an array; Optionally, the orthographic projection of the third detection electrode block on the substrate is located within the orthographic projection of the isolation structure on the substrate.

11. The display panel according to claim 1, characterized in that: The orthographic projection of the detection structure on the substrate is located within the orthographic projection of the isolation structure on the substrate.

12. The display panel according to claim 2, characterized in that: Also includes an insulating layer located on one side of the substrate; A plurality of pixel openings are provided on the insulating layer, wherein the pixel openings expose at least a portion of the second electrode, the pixel openings are connected to the isolation openings, and the light-emitting functional layer of the light-emitting device is located in the pixel openings; Optionally, the isolation structure is located on a side of the insulating layer away from the substrate; or, The insulating layer is further provided with a receiving opening, and the isolation structure is located in the receiving opening of the insulating layer; or, The insulating layer comprises a plurality of insulating parts arranged at intervals, the insulating parts cover the side edges of the second electrode and are arranged in a ring shape around the side edges of the second electrode, and the isolation structure is located in the intervals between adjacent insulating parts; Optionally, the insulating layer includes a pixel defining layer.

13. The display panel according to claim 1, characterized in that: Also includes a third encapsulation layer located on a side of the first encapsulation layer away from the substrate; The orthographic projection of the third encapsulation layer on the substrate covers the substrate.

14. A display panel, characterized in that: include: substrate; A light-emitting layer, located on one side of the substrate; A detection structure, located on a side of the light-emitting layer away from the substrate, for providing a detection signal; A first packaging layer, located on a side of the detection structure away from the substrate; The orthographic projection of the first encapsulation layer on the substrate covers the orthographic projection of the detection structure on the substrate.

15. A method for preparing a display panel, characterized in that: include: providing a substrate; forming an isolation structure, a light-emitting layer, a detection structure and a first packaging layer on the substrate; At least a portion of the isolation structure encloses an isolation opening; The light-emitting layer includes a plurality of light-emitting devices, and at least a portion of the light-emitting functional layers of the light-emitting devices are located in the isolation openings; The detection structure is used to provide a detection signal; The orthographic projection of the first encapsulation layer on the substrate covers the orthographic projection of the detection structure on the substrate.

16. The method according to claim 15, characterized in that The light emitting device comprises a first light emitting device, a second light emitting device and a third light emitting device; The isolation opening comprises a first isolation opening and a second isolation opening; The formation process of the detection structure includes: A first packaging material layer is formed on the first light-emitting device, and the first packaging material layer is patterned to obtain a first packaging unit of a second packaging layer; the first packaging unit covers a surface of the first light-emitting device facing away from the substrate and a surface of the isolation structure facing away from the substrate; forming a first electrode material layer on the first packaging unit, and patterning the first electrode material layer to form a first electrode and a first detection electrode of the second light-emitting device; forming a second packaging material layer on the first detection electrode, and patterning the second packaging material layer to obtain a second packaging unit of the second packaging layer, wherein the second packaging unit covers a surface of the second light-emitting device facing away from the substrate; A second electrode material layer is formed on the second packaging unit, and the second electrode material layer is patterned to form a first electrode and a second detection electrode of a third light emitting device.

17. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-14.

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