Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, an isolation structure arranged on one side of the substrate and enclosing an isolation opening, a light-emitting device arranged on one side of the substrate and at least partially located in the isolation opening, and a functional structure arranged on a side of the light-emitting device away from the substrate, wherein the functional structure comprises a first functional layer and a second functional layer, the refractive index of the first functional layer is greater than the refractive index of the second functional layer, and the first functional layer and the second functional layer are alternately stacked in the thickness direction of the display panel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a display panel and a display device. BACKGROUND

[0002] Organic light emitting diodes (OLED) and flat panel display devices based on light emitting diode (LED) technology have been widely used in mobile phones, televisions, notebook computers, desktop computers and other consumer electronic products due to their high image quality, power saving, thin body and wide application range. They have become the mainstream of display devices. In the preparation process of traditional display panels, fine mask (FMM) is usually used to realize the patterning of light emitting pixels. FMM technology is mature and has rich mass production experience. However, FMM technology also has the problems of limited precision, high development cost and long development cycle. Maskless technology eliminates the limitations of traditional OLED process on display screen size, resolution and other screen performance, and has the advantages of high performance, full size and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN117580403A, CN118678743A, CN118660490A, CN118678724A, CN118678806A, CN118742084A and CN118946184A disclose related content of maskless technology for reference.

[0003] However, the use performance of the current OLED display product needs to be improved. SUMMARY

[0004] Embodiments of the present application provide a display panel and a display device, aiming to improve the use performance of the display panel.

[0005] Embodiments of the first aspect of the present application provide a display panel, comprising: a substrate; an isolation structure arranged on one side of the substrate and enclosing an isolation opening; a light emitting device arranged on one side of the substrate and at least partially located in the isolation opening; a functional structure arranged on the side of the light emitting device away from the substrate, the functional structure comprising a first functional layer and a second functional layer, the refractive index of the first functional layer being greater than the refractive index of the second functional layer, and the first functional layer and the second functional layer being alternately stacked in the thickness direction of the display panel.

[0006] According to an embodiment of the first aspect of the present application, the isolation opening comprises a first opening and a second opening, the light emitting device comprises a first type of device arranged corresponding to the first opening and a second type of device arranged corresponding to the second opening, the light emitting color of the first type of device is different from the light emitting color of the second type of device, the functional structure comprises a first type of structure arranged on the side of the first type of device away from the substrate and a second type of structure arranged on the side of the second type of device away from the substrate, wherein the total number of the first functional layer and the second functional layer in a single first type of structure is s1, the total number of the first functional layer and the second functional layer in a single second type of structure is s2, s1≠s2, and / or the difference between the refractive index of the first functional layer and the refractive index of the second functional layer in the first type of structure is a1, the difference between the refractive index of the first functional layer and the refractive index of the second functional layer in the second type of structure is a2, a1≠a2.

[0007] According to any one of the preceding embodiments of the first aspect of the present application, 2≤s1≤20, and / or 2≤s2≤20.

[0008] According to any one of the preceding embodiments of the first aspect of the present application, the wavelength of the light emitting color of the first type of device is w1, the wavelength of the light emitting color of the second type of device is w2, w1>w2, wherein s1>s2, and / or a1>a2.

[0009] According to any one of the preceding embodiments of the first aspect of the present application, the light emitting color of the first type of device is red, and the light emitting color of the second type of device is blue.

[0010] According to any one of the preceding embodiments of the first aspect of the present application, the material of the first functional layer in the first type of structure is different from the material of the first functional layer in the second type of structure, and / or the material of the second functional layer in the first type of structure is different from the material of the second functional layer in the second type of structure.

[0011] According to any one of the preceding embodiments of the first aspect of the present application, the thickness of the first functional layer in the first type of structure is d1, the thickness of the first functional layer in the second type of structure is d3, d1≠d3, and / or the thickness of the second functional layer in the first type of structure is d2, the thickness of the second functional layer in the second type of structure is d4, d2≠d4.

[0012] According to any one of the preceding embodiments of the first aspect of the present application, the wavelength of the light emitting color of the first type of device is w1, the wavelength of the light emitting color of the second type of device is w2, wherein the refractive index of the first functional layer in the first type of structure is n1, n1*d1*4=w1, and / or the refractive index of the second functional layer in the first type of structure is n2, n2*d2*4=w1, and / or the refractive index of the first functional layer in the second type of structure is n3, n3*d3*4=w2, and / or the refractive index of the second functional layer in the second type of structure is n4, n4*d4*4=w2.

[0013] According to any one of the foregoing embodiments of the first aspect of the application, the isolation opening comprises a third opening, the light emitting device comprises a third type of device arranged corresponding to the third opening, the light emitting colors of the first type of device, the second type of device and the third type of device are different from each other, the functional structure comprises a third type of structure arranged on a side of the third type of device away from the substrate, the wavelength of the light emitting color of the first type of device is w1, the wavelength of the light emitting color of the second type of device is w2, the wavelength of the light emitting color of the third type of device is w3, w2 < w3 < w1, wherein the total number of layers of the first functional layer and the second functional layer in a single third type of structure is s3, s2 ≤ s3 ≤ s1, and / or the difference between the refractive index of the first functional layer and the refractive index of the second functional layer in the third type of structure is a3, a2 ≤ a3 ≤ a1.

[0014] According to any one of the foregoing embodiments of the first aspect of the application, 2 ≤ s3 ≤ 20.

[0015] According to any one of the foregoing embodiments of the first aspect of the application, the light emitting color of the first type of device is red, the light emitting color of the second type of device is blue, and the light emitting color of the third type of device is green.

[0016] According to any one of the foregoing embodiments of the first aspect of the application, the thickness of the first functional layer in the third type of structure is d5, the thickness of the second functional layer in the third type of structure is d6, wherein the thickness of the first functional layer in the first type of structure is d1, the thickness of the second functional layer in the first type of structure is d2, d5 = d1, d6 = d2, or the thickness of the first functional layer in the second type of structure is d3, the thickness of the second functional layer in the second type of structure is d4, d5 = d3, d6 = d4.

[0017] According to any one of the foregoing embodiments of the first aspect of the application, the refractive index of the first functional layer in the third type of structure is n5, the thickness of the first functional layer in the third type of structure is d5, n5 * d5 * 4 = w3, and / or the refractive index of the second functional layer in the third type of structure is n6, the thickness of the second functional layer in the third type of structure is d6, n6 * d6 * 4 = w3.

[0018] According to any one of the foregoing embodiments of the first aspect of the application, the film layer of the functional structure located at the edge of the side of the functional structure facing the light emitting device is the first functional layer.

[0019] According to any one of the foregoing embodiments of the first aspect of the application, the refractive index of the first functional layer is not less than 1.6 and not greater than 2.3, and / or the refractive index of the second functional layer is not less than 1.3 and not greater than 1.8.

[0020] According to any one of the foregoing embodiments of the first aspect of the application, the functional structure is at least partially located in the isolation opening.

[0021] According to any one of the foregoing embodiments of the first aspect of the present application, the number of light emitting devices is multiple, and the functional structures corresponding to adjacent light emitting devices are arranged with a spacing therebetween.

[0022] According to any one of the foregoing embodiments of the first aspect of the present application, the isolation structure comprises a first isolation portion and a second isolation portion located on a side of the first isolation portion away from the substrate, and the second isolation portion is arranged protruding from the first isolation portion towards the isolation opening.

[0023] According to any one of the foregoing embodiments of the first aspect of the present application, the light emitting device comprises a first electrode, a light emitting layer and a second electrode stacked in sequence in a direction away from the substrate, the material of the isolation structure comprises a conductive material, and the second electrode is connected to the isolation structure.

[0024] According to any one of the foregoing embodiments of the first aspect of the present application, the isolation structure further comprises a conductive portion located on a side of the first isolation portion towards the substrate, the conductive portion is arranged protruding from the first isolation portion towards the isolation opening, and the second electrode is connected to the conductive portion.

[0025] According to any one of the foregoing embodiments of the first aspect of the present application, the display panel further comprises an encapsulation layer arranged on a side of the functional structure away from the substrate.

[0026] According to any one of the foregoing embodiments of the first aspect of the present application, the material of the functional structure comprises an evaporation material.

[0027] According to any one of the foregoing embodiments of the first aspect of the present application, the material of the functional structure comprises an organic material.

[0028] According to any one of the foregoing embodiments of the first aspect of the present application, the material of the functional structure comprises an organic transparent material.

[0029] According to any one of the foregoing embodiments of the first aspect of the present application, at least part of the functional structure is multiplexed as at least part of the encapsulation layer.

[0030] According to any one of the foregoing embodiments of the first aspect of the present application, the functional structure comprises an encapsulation portion multiplexed as at least part of the encapsulation layer and a functional portion located between the encapsulation portion and the light emitting device, and the material of the functional portion comprises an evaporation material.

[0031] According to any one of the foregoing embodiments of the first aspect of the present application, the encapsulation layer comprises a first encapsulation layer, a second encapsulation layer located on a side of the first encapsulation layer away from the substrate, and a third encapsulation layer located on a side of the second encapsulation layer away from the substrate, and at least part of the functional structure is multiplexed as at least one of the first encapsulation layer, the second encapsulation layer and the third encapsulation layer.

[0032] According to any one of the foregoing embodiments of the first aspect of the present application, the functional structure comprises an encapsulation portion multiplexed as the first encapsulation layer, and the material of the encapsulation portion comprises a chemical vapor deposition material.

[0033] According to any one of the preceding embodiments of the first aspect of the application, the material of the encapsulation portion comprises an inorganic material.

[0034] According to any one of the preceding embodiments of the first aspect of the application, the material of the encapsulation portion comprises an inorganic transparent material.

[0035] According to any one of the preceding embodiments of the first aspect of the application, the material of the encapsulation portion comprises at least one of silicon nitride, silicon oxynitride and silicon oxide.

[0036] According to any one of the preceding embodiments of the first aspect of the application, the material of the first functional layer in the encapsulation portion comprises silicon nitride or silicon oxynitride, and the material of the second functional layer in the encapsulation portion comprises silicon oxide.

[0037] According to any one of the preceding embodiments of the first aspect of the application, the functional structure comprises an encapsulation portion multiplexed as a first encapsulation layer, the encapsulation portion is at least partially located in the isolation opening, and the encapsulation portion is arranged to cover the sidewall on the side of the isolation structure facing the isolation opening.

[0038] According to any one of the preceding embodiments of the first aspect of the application, part of the encapsulation portion is located on the side of the isolation structure away from the substrate.

[0039] According to any one of the preceding embodiments of the first aspect of the application, the encapsulation portion on the side of the isolation structure away from the substrate is arranged to be spaced apart from the isolation structure.

[0040] Embodiments of the second aspect of the application provide a display device, which comprises the display panel of any one of the preceding embodiments.

[0041] In the display panel provided in the embodiments of the application, the display panel comprises a substrate, an isolation structure, a light emitting device and a functional structure. The isolation structure is arranged on one side of the substrate and encloses to form an isolation opening. The light emitting device is arranged on one side of the substrate and at least partially located in the isolation opening. The isolation structure can be used to participate in dividing the sub-pixels of the display panel.

[0042] The functional structure is arranged on a side of the light-emitting device away from the substrate, and the functional structure includes a first functional layer and a second functional layer. The refractive index of the first functional layer is greater than the refractive index of the second functional layer. The first functional layer and the second functional layer are alternately stacked in the thickness direction of the display panel, so that the functional structure can form a distributed Bragg reflector (DBR). The functional structure can be used to improve the light-emitting efficiency of the display panel, and can also better adjust the viewing angle color deviation and / or viewing angle luminance decay of the light-emitting device. The display panel can have greater color deviation and / or luminance decay at a large viewing angle. The display panel can have a better display effect at a normal viewing angle, and can also improve the privacy effect of the display panel, thereby better improving the use performance of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0044] Figure 1 is a partial schematic view of an isolation structure provided by an embodiment of the present application;

[0045] Figure 2 is a partial cross-sectional view of a display panel provided by an embodiment of the present application;

[0046] Figure 3 is a partial cross-sectional view of a display panel provided by another embodiment of the present application;

[0047] Figure 4 is a partial cross-sectional view of a display panel provided by still another embodiment of the present application;

[0048] Figure 5 is a partial cross-sectional view of a display panel provided by yet another embodiment of the present application;

[0049] Figure 6 is a partial cross-sectional view of a display panel provided by still another embodiment of the present application;

[0050] Figures 7 to 9 is a preparation process schematic diagram of a display panel preparation method provided by an embodiment of the present application;

[0051] Figure 10 is a partial cross-sectional view of a display panel provided by still another embodiment of the present application;

[0052] Figures 11 to 13is a preparation process schematic diagram of a preparation method of a display panel provided by another embodiment of the present application;

[0053] Figure 14 is a partial sectional view of a display panel provided by still another embodiment of the present application;

[0054] Figures 15 to 17 is a preparation process schematic diagram of a preparation method of a display panel provided by still another embodiment of the present application.

[0055] Legend of reference signs:

[0056] 10, display panel;

[0057] 100, substrate; 110, base; 120, first insulating layer; 130, second insulating layer; 140, third insulating layer; 150, driving circuit; 151, transistor; 151a, gate; 151b, source-drain; 152, storage capacitor; 152a, first plate; 152b, second plate;

[0058] 200, pixel definition layer; 210, pixel defining portion; 210a, pixel opening;

[0059] 300, isolation structure; 301, isolation opening; 301a, first opening; 301b, second opening; 301c, third opening; 310, first isolation portion; 320, second isolation portion; 330, conductive portion;

[0060] 400, light emitting device; 401, first type device; 402, second type device; 403, third type device; 410, first electrode; 420, light emitting layer; 430, second electrode;

[0061] 500, encapsulation layer; 510, first encapsulation layer; 511, first unit; 512, second unit; 514, third unit; 520, second encapsulation layer; 530, third encapsulation layer;

[0062] 600, functional structure; 600a, encapsulation portion; 600b, functional portion; 601, first type structure; 602, second type structure; 603, third type structure; 610, first functional layer; 620, second functional layer;

[0063] Z, thickness direction. DETAILED DESCRIPTION

[0064] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. For the purpose of clarity, the description is divided into the following sections: technical scheme, technical effects, and specific embodiments. The technical scheme section describes the technical scheme of the present application. The technical effects section describes the technical effects of the present application. The specific embodiments section describes specific embodiments of the present application. The description of the specific embodiments is provided only to show examples of the present application and is not configured to limit the present application. The present application can be implemented without some of the specific details described below. The description of the embodiments below is only provided to provide a better understanding of the present application by showing examples of the present application.

[0065] It should be noted that the relative terms such as first and second, etc., are used herein only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article or device. Without more limitations, the elements defined by the statement "comprise" do not exclude the presence of additional identical elements in the process, method, article or device that includes the elements.

[0066] It should be understood that when describing the structure of a component, when one layer, one region is referred to as being "on" or "above" another layer, another region, it can mean being directly on or above the other layer, another region, or containing other layers or regions therebetween. Moreover, if the component is turned over, the layer, the region will be "under" or "below" the other layer, the other region.

[0067] Embodiments of the present application provide a display panel and a display device, which will be described below with reference to the accompanying drawings.

[0068] Figure 1 is a partial schematic view of an isolation structure 300 provided by embodiments of the present application, Figure 2 is a partial cross-sectional view of a display panel 10 provided by embodiments of the present application. In the figure, the Z direction is the thickness direction Z of the display panel 10.

[0069] As Figure 1 and Figure 2As shown, the embodiment of the first aspect of the present application provides a display panel 10, comprising: a substrate 100; an isolation structure 300 arranged on one side of the substrate 100 and enclosing an isolation opening 301; a light emitting device 400 arranged on one side of the substrate 100 and at least partially located in the isolation opening 301; a functional structure 600 arranged on a side of the light emitting device 400 away from the substrate 100, the functional structure 600 comprising a first functional layer 610 and a second functional layer 620, the refractive index of the first functional layer 610 being greater than the refractive index of the second functional layer 620, the first functional layer 610 and the second functional layer 620 being alternately stacked in the thickness direction Z of the display panel 10.

[0070] In the display panel 10 provided by the embodiment of the present application, the display panel 10 comprises the substrate 100, the isolation structure 300, the light emitting device 400 and the functional structure 600.

[0071] Optionally, the substrate 100 can be arranged in various ways. For example, the substrate 100 can comprise a substrate 110 and a driving circuit 150 arranged on a side of the substrate 110 facing the light emitting device 400. For example, the driving circuit 150 can comprise a transistor 151, a storage capacitor 152 and a driving signal line for connecting various devices. The transistor 151 can comprise a semiconductor, a gate 151a and a source / drain 151b. The storage capacitor 152 can comprise a first plate 152a and a second plate 152b.

[0072] Optionally, the substrate 100 can further comprise a first insulating layer 120, a second insulating layer 130 and a third insulating layer 140 arranged in sequence in a direction away from the substrate 110.

[0073] For example, the gate 151a and the first plate 152a can be located on a side of the first insulating layer 120 facing the substrate 110, the second plate 152b can be located between the first insulating layer 120 and the second insulating layer 130, and the source / drain 151b can be located between the second insulating layer 130 and the third insulating layer 140.

[0074] The light emitting device 400 can be used to participate in the realization of the light emitting display of the display panel 10.

[0075] Optionally, the light emitting device 400 comprises a first electrode 410, a light emitting layer 420 and a second electrode 430 arranged in sequence in a direction away from the substrate 100.

[0076] Optionally, the light-emitting layer 420 can include a hole injection layer (HIL), a hole transport layer (HTL), a light-emitting structure, an electron injection layer (EIL), and an electron transport layer (ETL).

[0077] Optionally, the first electrode 410 and the second electrode 430 can serve as pixel electrodes of the display panel 10, one of the first electrode 410 and the second electrode 430 can serve as an anode, and the other can serve as a cathode to drive the light-emitting layer 420 to emit light. Embodiments of the present application take the first electrode 410 as the anode of the display panel 10 and the second electrode 430 as the cathode of the display panel 10 as an example.

[0078] The isolation structure 300 is disposed on one side of the substrate 100 and encloses the isolation opening 301, and the light-emitting device 400 is disposed on one side of the substrate 100 and at least partially located in the isolation opening 301. The isolation structure 300 can be used to participate in the division of the sub-pixels of the display panel 10.

[0079] Optionally, the isolation structure 300 includes a first isolation portion 310 and a second isolation portion 320 located on the side of the first isolation portion 310 away from the substrate 100, and the second isolation portion 320 is protruding from the first isolation portion 310 towards the isolation opening 301.

[0080] By protruding the second isolation portion 320 from the first isolation portion 310 towards the isolation opening 301, when the light-emitting layer 420 and the second electrode 430 of the display panel 10 are evaporated, the second isolation portion 320 can shield at least part of the material used to prepare the light-emitting layer 420 and the second electrode 430, so as to isolate the light-emitting layer 420 and the second electrode 430 between adjacent sub-pixels, and can facilitate the formation of multiple spaced light-emitting layers 420 and second electrodes 430, so that when the light-emitting layer 420 and the second electrode 430 of the display panel 10 are evaporated, a mask plate with high precision does not need to be set, for example, a fine metal mask (FMM) does not need to be set when the light-emitting layer 420 and the second electrode 430 are evaporated, thereby better reducing the production cost of the display panel 10.

[0081] Optionally, the number of isolation openings 301 can be multiple, for example, the isolation structure 300 can be in a grid shape, and the hollow area in the grid-shaped isolation structure 300 can form the isolation opening 301.

[0082] Optionally, the number of the light emitting devices 400 can be multiple, and a single light emitting device 400 can be arranged corresponding to a single isolation opening 301. For example, a single light emitting device 400 can be arranged corresponding to a single isolation opening 301, which can mean that the orthographic projection of the single light emitting device 400 on the substrate 100 can be located within the orthographic projection of the single isolation opening 301 on the substrate 100. The orthographic projection of the isolation opening 301 on the substrate 100 can mean the orthographic projection of the inner wall of the isolation opening 301 on the substrate 100 and the projection area enclosed by the orthographic projection of the inner wall of the isolation opening 301 on the substrate 100.

[0083] Optionally, the material of the isolation structure 300 includes a conductive material, and the second electrode 430 is connected with the isolation structure 300. For example, the material of the first isolation part 310 can include a conductive material, and the second electrodes 430 of adjacent light emitting devices 400 can be electrically connected through the isolation structure 300, that is, the second electrodes 430 of adjacent light emitting devices 400 can be connected with each other through the isolation structure 300 to form a surface electrode, so as to facilitate the control of the second electrode 430 in the display panel 10.

[0084] Optionally, the isolation structure 300 further includes a conductive part 330 located on the side of the first isolation part 310 facing the substrate 100, and the conductive part 330 is arranged protruding from the first isolation part 310 towards the isolation opening 301, and the second electrode 430 is connected with the conductive part 330.

[0085] By arranging the conductive part 330 to protrude from the first isolation part 310 towards the isolation opening 301, the overlap between the second electrode 430 and the conductive part 330 can be facilitated, and the overlap area between the second electrode 430 and the conductive part 330 can be improved, so as to reduce the resistance of the display panel 10.

[0086] Optionally, the isolation opening 301 includes a first opening 301a and a second opening 301b, the light emitting device 400 includes a first type device 401 arranged corresponding to the first opening 301a and a second type device 402 arranged corresponding to the second opening 301b, and the light emitting colors of the first type device 401 and the second type device 402 are different, so as to facilitate the color light emitting display of the display panel 10.

[0087] Optionally, the first type device 401 is arranged corresponding to the first opening 301a, which can mean that the orthographic projection of a single first type device 401 on the substrate 100 can be located within the orthographic projection of a single first opening 301a on the substrate 100. Optionally, the second type device 402 is arranged corresponding to the second opening 301b, which can mean that the orthographic projection of a single second type device 402 on the substrate 100 can be located within the orthographic projection of a single second opening 301b on the substrate 100.

[0088] Optionally, the isolation opening 301 may also include a third opening 301c, and the light-emitting device 400 includes a third type of device 403 corresponding to the third opening 301c. The light-emitting colors of the first type of device 401, the second type of device 402 and the third type of device 403 are different from each other, so as to further facilitate the realization of color light-emitting display of the display panel 10.

[0089] Optionally, the third type of device 403 is set corresponding to the third opening 301c, which means that the orthographic projection of a single third type of device 403 on the substrate 100 can be located within the orthographic projection of a single third opening 301c on the substrate 100.

[0090] Optionally, the display panel 10 may also include a pixel definition layer 200 disposed on some of the substrate 100. The pixel definition layer 200 includes a pixel limiting portion 210 and a pixel opening 210a formed by the pixel limiting portion 210. The pixel opening 210a is connected to the isolation opening 301. The pixel definition layer 200 may also be used to participate in dividing the sub-pixels of the display panel 10.

[0091] Optionally, a portion of the structure of the light-emitting device 400 may be located within the pixel opening 210a, and another portion of the structure of the light-emitting device 400 may be located within the isolation opening 301. For example, the light-emitting layer 420 and the second electrode 430 of the light-emitting device 400 may extend from the pixel opening 210a into the isolation opening 301.

[0092] Optionally, there are various ways to set the relative position between the pixel limiting part 210 and the isolation structure 300, for example, such as Figure 2 As shown, the isolation structure 300 can be disposed on the side of the pixel limiting portion 210 facing away from the substrate 100, that is, the isolation structure 300 can be directly disposed on the pixel limiting portion 210. Alternatively, the pixel limiting portion 210 can have a receiving groove (not shown in the figure), and at least a portion of the isolation structure 300 can be located in the receiving groove, so that the isolation structure 300 is less likely to have an excessive height relative to the substrate 100, thereby effectively reducing the thickness of the display panel 10. For ease of description, the following embodiments will be described using the example of the isolation structure 300 being disposed on the side of the pixel limiting portion 210 facing away from the substrate 100.

[0093] The functional structure 600 is disposed on the side of the light-emitting device 400 facing away from the substrate 100. Optionally, the material of the functional structure 600 may include a transparent material to better reduce the shading effect of the functional structure 600 on the emitted light of the light-emitting device 400.

[0094] The functional structure 600 comprises a first functional layer 610 and a second functional layer 620, the refractive index of the first functional layer 610 is greater than the refractive index of the second functional layer 620, and the first functional layer 610 and the second functional layer 620 are alternately stacked in the thickness direction Z of the display panel 10, so that the functional structure 600 can form a distributed Bragg reflector, so that the functional structure 600 can be used to improve the light-emitting efficiency of the display panel 10, while better adjusting the viewing angle color shift and / or viewing angle luminance decay of the light-emitting device 400, so that the display panel 10 can have larger color shift and / or luminance decay at a large viewing angle, so that the display panel 10 can have better display effect at a normal viewing angle while improving the privacy effect of the display panel 10, thereby better improving the use performance of the display panel 10.

[0095] Optionally, when the single functional structure 600 only comprises one first functional layer 610 and one second functional layer 620, the first functional layer 610 and the second functional layer 620 are alternately stacked in the thickness direction Z of the display panel 10, which can mean that the single first functional layer 610 is located on the side away from the substrate 100 of the single second functional layer 620, or can mean that the single second functional layer 620 is located on the side away from the substrate 100 of the single first functional layer 610. When the single functional structure 600 comprises at least two first functional layers 610, the first functional layer 610 and the second functional layer 620 are alternately stacked in the thickness direction Z of the display panel 10, which can mean that the two adjacent first functional layers 610 are not in direct contact, and the second functional layer 620 is located between the two adjacent first functional layers 610. Similarly, when the single functional structure 600 comprises at least two second functional layers 620, the first functional layer 610 and the second functional layer 620 are alternately stacked in the thickness direction Z of the display panel 10, which can mean that the two adjacent second functional layers 620 are not in direct contact, and the first functional layer 610 is located between the two adjacent second functional layers 620.

[0096] Optionally, the refractive index of the first functional layer 610 is not less than 1.6 and not greater than 2.3, and / or the refractive index of the second functional layer 620 is not less than 1.3 and not greater than 1.8.

[0097] In this optional embodiment, by reasonably setting the refractive index of the first functional layer 610 and the second functional layer 620, the display panel 10 can have better viewing angle color shift and / or viewing angle luminance decay while having better light-emitting efficiency, so that the display panel 10 can have better display effect at a normal viewing angle while improving the privacy effect of the display panel 10, thereby better improving the use performance of the display panel 10.

[0098] In some optional embodiments, the functional structure 600 comprises a first type of structure 601 arranged on the side of the first type of device 401 away from the substrate 100, and a second type of structure 602 arranged on the side of the second type of device 402 away from the substrate 100, so that the first type of structure 601 can be adjusted better for the light emitting display of the first type of device 401, so that the first type of structure 601 can be used to improve the light emitting efficiency of the first type of device 401, while better adjusting the color deviation and / or the brightness attenuation at a large viewing angle of the first type of device 401, so that the first type of device 401 can have better color deviation and / or brightness attenuation at a large viewing angle.

[0099] Similarly, the second type of structure 602 can also be adjusted better for the light emitting display of the second type of device 402, so that the second type of structure 602 can be used to improve the light emitting efficiency of the second type of device 402, while better adjusting the color deviation and / or the brightness attenuation at a large viewing angle of the second type of device 402, so that the second type of device 402 can have better color deviation and / or brightness attenuation at a large viewing angle.

[0100] Optionally, the functional structure 600 comprises a third type of structure 603 arranged on the side of the third type of device 403 away from the substrate 100, so that the third type of structure 603 can be adjusted better for the light emitting display of the third type of device 403, so that the third type of structure 603 can be used to improve the light emitting efficiency of the third type of device 403, while better adjusting the color deviation and / or the brightness attenuation at a large viewing angle of the third type of device 403, so that the third type of device 403 can have better color deviation and / or brightness attenuation at a large viewing angle.

[0101] In some embodiments of the present application, the total number of layers of the first functional layer 610 and the second functional layer 620 in a single first type of structure 601 is s1, the total number of layers of the first functional layer 610 and the second functional layer 620 in a single second type of structure 602 is s2, and the total number of layers of the first functional layer 610 and the second functional layer 620 in a single third type of structure 603 is s3.

[0102] Optionally, 2≤s1≤20, and / or 2≤s2≤20, and / or 2≤s3≤20.

[0103] In some optional embodiments, as shown in Figure 2 s1=s2, i.e., the total number of layers of the first functional layer 610 and the second functional layer 620 in a single first type of structure 601 can be the same as the total number of layers of the first functional layer 610 and the second functional layer 620 in a single second type of structure 602, so that the height of the first type of structure 601 and the second type of structure 602 relative to the substrate 100 is the same or similar, so that the first type of structure 601 and the second type of structure 602 do not easily have a large height difference, which can facilitate the formation and preparation of subsequent film layers.

[0104] Figure 3 is a partial sectional view of a display panel 10 provided by another embodiment of the present application, Figure 4 is a partial sectional view of a display panel 10 provided by yet another embodiment of the present application.

[0105] In some alternative embodiments, as shown in Figure 3 and Figure 4 s1≠s2, i.e., the total number of layers of the first functional layer 610 and the second functional layer 620 in the single first-type structure 601 can be different from the total number of layers of the first functional layer 610 and the second functional layer 620 in the single second-type structure 602.

[0106] For example, as shown in Figure 3 the total number of layers of the first functional layer 610 and the second functional layer 620 in the single first-type structure 601 can be six, and the total number of layers of the first functional layer 610 and the second functional layer 620 in the single second-type structure 602 can be four.

[0107] For example, as shown in Figure 4 the total number of layers of the first functional layer 610 and the second functional layer 620 in the single first-type structure 601 can be five, and the total number of layers of the first functional layer 610 and the second functional layer 620 in the single second-type structure 602 can be four.

[0108] In these alternative embodiments, by setting s1≠s2, the influences of the first-type structure 601 and the second-type structure 602 on the viewing angle deviation and the viewing angle luminance decay can be different, so that the luminous efficiency of the first-type device 401 and the luminous efficiency of the second-type device 402 can be better adjusted respectively, and the viewing angle deviation and the viewing angle luminance decay of the first-type device 401 and the viewing angle deviation and the viewing angle luminance decay of the second-type device 402 can be better adjusted respectively, so that the display panel 10 as a whole can have better display effect while still being able to have better anti-peeping effect.

[0109] Alternatively, s1, s2 and s3 can be different from each other, i.e., s1≠s2≠s3, so that the influences of the first-type structure 601, the second-type structure 602 and the third-type structure 603 on the viewing angle deviation and the viewing angle luminance decay can be different, so that the luminous efficiency of the first-type device 401, the luminous efficiency of the second-type device 402 and the luminous efficiency of the third-type device 403 can be better adjusted respectively, and the viewing angle deviation and the viewing angle luminance decay of the first-type device 401, the viewing angle deviation and the viewing angle luminance decay of the second-type device 402 and the viewing angle deviation and the viewing angle luminance decay of the third-type device 403 can be better adjusted respectively, so that the display panel 10 as a whole can have better display effect while still being able to have better anti-peeping effect. For example, as shown in Figure 3As shown, the total number of layers of the first functional layer 610 and the second functional layer 620 in the single first type structure 601 can be six, the total number of layers of the first functional layer 610 and the second functional layer 620 in the single third type structure 603 can be five, and the total number of layers of the first functional layer 610 and the second functional layer 620 in the single second type structure 602 can be six.

[0110] Alternatively, s3 can be equal to any one of s1 and s2, for example, s3 = s1 or s3 = s2, or s1 = s2 = s3, so that the height of the third type structure 603 is the same as or similar to that of the first type structure 601 and / or the second type structure 602, so that there is no large height difference between the third type structure 603 and the first type structure 601 and / or the second type structure 602, which facilitates the formation and preparation of subsequent film layers. For example, as shown in FIG. 6, the total number of layers of the first functional layer 610 and the second functional layer 620 in the single first type structure 601 can be five, and the total number of layers of the first functional layer 610 and the second functional layer 620 in the single third type structure 603 can be five, i.e., s3 = s1 = 5. Figure 4 As shown, the total number of layers of the first functional layer 610 and the second functional layer 620 in the single first type structure 601 can be five, and the total number of layers of the first functional layer 610 and the second functional layer 620 in the single third type structure 603 can be five, i.e., s3 = s1 = 5.

[0111] In some embodiments of the present application, the difference between the refractive index of the first functional layer 610 and the refractive index of the second functional layer 620 in the first type structure 601 is a1, the difference between the refractive index of the first functional layer 610 and the refractive index of the second functional layer 620 in the second type structure 602 is a2, and the difference between the refractive index of the first functional layer 610 and the refractive index of the second functional layer 620 in the third type structure 603 is a3.

[0112] In some alternative embodiments, a1 = a2, i.e., the difference between the refractive index of the first functional layer 610 and the refractive index of the second functional layer 620 in the first type structure 601 can be equal to the difference between the refractive index of the first functional layer 610 and the refractive index of the second functional layer 620 in the second type structure 602.

[0113] For example, a1 = a2 = 0.54.

[0114] Alternatively, the refractive index of the first functional layer 610 in the first type structure 601 can be equal to the refractive index of the first functional layer 610 in the second type structure 602, and the refractive index of the second functional layer 620 in the first type structure 601 can be equal to the refractive index of the second functional layer 620 in the second type structure 602. For example, the refractive index of the first functional layer 610 in the first type structure 601 and the refractive index of the first functional layer 610 in the second type structure 602 are both 2, and the refractive index of the second functional layer 620 in the first type structure 601 and the refractive index of the second functional layer 620 in the second type structure 602 are both 1.46.

[0115] In these optional embodiments, by setting a1=a2, the material of the first functional layer 610 in the first type of structure 601 can be the same as the material of the first functional layer 610 in the second type of structure 602, and the material of the second functional layer 620 in the first type of structure 601 can be the same as the material of the second functional layer 620 in the second type of structure 602, so that the preparation process of the first type of structure 601 can be similar to the preparation process of the second type of structure 602, which can facilitate improving the preparation efficiency of the display panel 10.

[0116] In other optional embodiments, a1≠a2, that is, the difference between the refractive index of the first functional layer 610 and the refractive index of the second functional layer 620 in the first type of structure 601 is different from the difference between the refractive index of the first functional layer 610 and the refractive index of the second functional layer 620 in the second type of structure 602.

[0117] Optionally, the refractive index of the first functional layer 610 in the first type of structure 601 is different from the refractive index of the first functional layer 610 in the second type of structure 602, and / or the refractive index of the second functional layer 620 in the first type of structure 601 is different from the refractive index of the second functional layer 620 in the second type of structure 602, so as to realize a1≠a2.

[0118] Optionally, the material of the first functional layer 610 in the first type of structure 601 is different from the material of the first functional layer 610 in the second type of structure 602, so as to realize that the refractive index of the first functional layer 610 in the first type of structure 601 is different from the refractive index of the first functional layer 610 in the second type of structure 602, and / or the material of the second functional layer 620 in the first type of structure 601 is different from the material of the second functional layer 620 in the second type of structure 602, so as to realize that the refractive index of the second functional layer 620 in the first type of structure 601 is different from the refractive index of the second functional layer 620 in the second type of structure 602.

[0119] In these optional embodiments, by setting a1≠a2, the influence of the first type of structure 601 and the second type of structure 602 on the viewing angle deviation and the viewing angle luminance decay can be different, so that the luminous efficiency of the first type of device 401 and the luminous efficiency of the second type of device 402 can be better adjusted respectively, and the viewing angle deviation and the viewing angle luminance decay of the first type of device 401 and the viewing angle deviation and the viewing angle luminance decay of the second type of device 402 can be better adjusted respectively, so that the display panel 10 as a whole can have better display effect while also having better peep-proof effect.

[0120] Optionally, a3 can be equal to any one of a1 and a2, for example, a3=a1, or a3=a2, or a1=a2=a3, so that the preparation process of the third type of structure 603 can be similar to the preparation process of the first type of structure 601 or the second type of structure 602, which can facilitate improving the preparation efficiency of the display panel 10. For example, a1=a2=a3=0.54.

[0121] For example, the refractive index of the first functional layer 610 in the first type of structure 601, the refractive index of the first functional layer 610 in the second type of structure 602, and the refractive index of the first functional layer 610 in the third type of structure 603 are all 2, and the refractive index of the second functional layer 620 in the first type of structure 601, the refractive index of the second functional layer 620 in the second type of structure 602, and the refractive index of the second functional layer 620 in the third type of structure 603 are all 1.46.

[0122] Optionally, a1, a2 and a3 can be different from each other, that is, a1≠a2≠a3, so that the influences of the first type of structure 601, the second type of structure 602 and the third type of structure 603 on the viewing angle deviation and the viewing angle luminance decay can be different, so that the luminous efficiency of the first type of device 401, the luminous efficiency of the second type of device 402 and the luminous efficiency of the third type of device 403 can be better adjusted respectively, and the viewing angle deviation and the viewing angle luminance decay of the first type of device 401, the viewing angle deviation and the viewing angle luminance decay of the second type of device 402 and the viewing angle deviation and the viewing angle luminance decay of the third type of device 403 can be better adjusted respectively, so that the display panel 10 as a whole can have better display effect while also having better peep-proof effect.

[0123] In some embodiments of the present application, the parameters of each functional structure 600 can be correspondingly set according to the difference in the light-emitting color between each light-emitting device 400.

[0124] As an example, the wavelength of the light-emitting color of the first type of device 401 is w1, the wavelength of the light-emitting color of the second type of device 402 is w2, and w1>w2. For example, the light-emitting color of the first type of device 401 can be red, and the light-emitting color of the second type of device 402 can be blue.

[0125] Further, the wavelength of the light-emitting color of the third type of device 403 is w3, and w2

[0126] Optionally, w1 can be no less than 600 nm, and w1 can be no more than 700 nm. For example, w1 can be 600 nm, 620 nm, 640 nm, 660 nm, 680 nm, or 700 nm.

[0127] Optionally, w2 can be no less than 400 nm, and w1 can be no more than 500 nm. For example, w1 can be 400 nm, 420 nm, 440 nm, 460 nm, 480 nm, or 500 nm.

[0128] Optionally, w3 can be no less than 500 nm, and w1 can be no more than 600 nm. For example, w1 can be 500 nm, 520 nm, 530 nm, 540 nm, 560 nm, 580 nm, or 600 nm.

[0129] In some optional embodiments, s1 > s2.

[0130] In this optional embodiment, when w1 > w2, i.e., the wavelength of the light-emitting color of the first type of device 401 is greater than the wavelength of the light-emitting color of the second type of device 402, the first type of device 401 is more sensitive to the change of s1 in the first type of structure 601 above it than the second type of device 402 to the change of s2 in the second type of structure 602 above it. For example, when s1 in the first type of structure 601 changes, the light-emitting efficiency, viewing angle deviation, and viewing angle luminance decay of the first type of device 401 change greatly. Therefore, by setting s1 > s2, i.e., by increasing s1 of the first type of structure 601 above the more sensitive first type of device 401, the light-emitting efficiency of the display panel 10 as a whole can be improved more efficiently, and the viewing angle deviation and viewing angle luminance decay of the display panel 10 as a whole can be adjusted more efficiently, so that the display panel 10 can have better display effect at the normal viewing angle while improving the privacy effect of the display panel 10. Also, s2 does not have a large value, so that the second type of structure 602 is not easily negatively affected by the value of s2 being too large to affect the light-emitting of the second type of device 402 with a smaller wavelength, and the use performance of the display panel 10 can be improved better.

[0131] In some optional embodiments, s2 ≤ s3 ≤ s1.

[0132] In the optional embodiment, when w2 < w3 < wl, i.e. the light-emitting color wavelength of the third type of device 403 is between the light-emitting color wavelength of the first type of device 401 and the light-emitting color wavelength of the second type of device 402, the third type of device 403 is more moderately sensitive to the change of s3 in the third type of structure 603 above it than the first type of device 401 to the change of s1 in the first type of structure 601 above it and the second type of device 402 to the change of s2 in the second type of structure 602 above it. For example, when s3 in the third type of structure 603 changes, the light-emitting efficiency, viewing angle deviation and viewing angle luminance decay of the third type of device 403 will change moderately. Therefore, by setting s2 < s3 < sl, s3 in the third type of structure 603 can be moderately changed, so that the value of s3 in the third type of structure 603 is not too small, so that the third type of structure 603 can more appropriately improve the light-emitting efficiency of the display panel 10 as a whole and more appropriately adjust the viewing angle deviation and viewing angle luminance decay of the display panel 10 as a whole, so that the display panel 10 can have appropriate display effect at the normal viewing angle while improving the peep-proof effect of the display panel 10. Also, the value of s3 in the third type of structure 603 is not too large, so that the third type of structure 603 is not easily negatively affected by the light-emitting of the third type of device 403 with a moderately appropriate wavelength due to the value of s3 being too large, and the use performance of the display panel 10 can be better improved.

[0133] In some optional embodiments, al > a2.

[0134] In the optional embodiment, as in the foregoing embodiments, the first type of device 401 is more sensitive to the change of al in the first type of structure 601 above it. Therefore, by setting al > a2, i.e. by increasing al of the first type of structure 601 above the more sensitive first type of device 401, the light-emitting efficiency of the display panel 10 as a whole can be more efficiently improved and the viewing angle deviation and viewing angle luminance decay of the display panel 10 as a whole can be more efficiently adjusted, so that the display panel 10 can have better display effect at the normal viewing angle while improving the peep-proof effect of the display panel 10. Also, a2 does not have a large value, so that the second type of structure 602 is not easily negatively affected by the light-emitting of the second type of device 402 with a smaller wavelength due to the value of a2 being too large, and the use performance of the display panel 10 can be better improved.

[0135] In some optional embodiments, a2 < a3 < al.

[0136] In the optional embodiment, the third type of device 403 is moderately sensitive to the change of a3 in the third type of structure 603, as in the foregoing embodiment. Therefore, by setting a2≤a3≤a1, the third type of structure 603 can have a moderate a3, so that the value of a3 in the third type of structure 603 is not too small, so that the third type of structure 603 can more appropriately improve the light-emitting efficiency of the display panel 10 as a whole and more appropriately adjust the viewing angle color shift and viewing angle luminance decay of the display panel 10 as a whole, so that the display panel 10 can have appropriate display effect at the normal viewing angle while improving the privacy effect of the display panel 10. Also, the value of a3 in the third type of structure 603 is not too large, so that the third type of structure 603 is less likely to negatively affect the light-emitting of the third type of device 403 with moderate wavelength due to the too large value of a3, and can better improve the use performance of the display panel 10.

[0137] In some embodiments of the present application, the thickness of the first functional layer 610 in the first type of structure 601 is d1, the thickness of the second functional layer 620 in the first type of structure 601 is d2, the thickness of the first functional layer 610 in the second type of structure 602 is d3, the thickness of the second functional layer 620 in the second type of structure 602 is d4, the thickness of the first functional layer 610 in the third type of structure 603 is d5, and the thickness of the second functional layer 620 in the third type of structure 603 is d6.

[0138] Alternatively, d1, d2, d3, d4, d5, and d6 can be the maximum thickness of the first functional layer 610 in the first type of structure 601, the maximum thickness of the second functional layer 620 in the first type of structure 601, the maximum thickness of the first functional layer 610 in the second type of structure 602, the maximum thickness of the second functional layer 620 in the second type of structure 602, the maximum thickness of the first functional layer 610 in the third type of structure 603, and the maximum thickness of the second functional layer 620 in the third type of structure 603, respectively.

[0139] Alternatively, d1, d2, d3, d4, d5, and d6 can be the average thickness of the first functional layer 610 in the first type of structure 601, the average thickness of the second functional layer 620 in the first type of structure 601, the average thickness of the first functional layer 610 in the second type of structure 602, the average thickness of the second functional layer 620 in the second type of structure 602, the average thickness of the first functional layer 610 in the third type of structure 603, and the average thickness of the second functional layer 620 in the third type of structure 603, respectively.

[0140] Figure 5 is a partial cross-sectional view of a display panel 10 provided by another embodiment of the present application.

[0141] In some optional embodiments, as Figure 5As shown, d1≠d3, and / or, d2≠d4.

[0142] Optionally, the refractive index of the first functional layer 610 in the first type of structure 601 is n1, and n1*d1*4=w1.

[0143] Optionally, the refractive index of the second functional layer 620 in the first type of structure 601 is n2, and n2*d2*4=w1.

[0144] Optionally, d1

[0145] Optionally, the refractive index of the first functional layer 610 in the second type of structure 602 is n3, and n3*d3*4=w2.

[0146] Optionally, the refractive index of the second functional layer 620 in the second type of structure 602 is n4, and n4*d4*4=w2.

[0147] Optionally, d3

[0148] Optionally, d1>d3, and d2>d4.

[0149] In these optional embodiments, when the wavelength of the light emitted by the first type of device 401 and the wavelength of the light emitted by the second type of device 402 differ too much, if d1=d3 and d2=d4 are set, the adjustment capability of the first type of structure 601 on the emitted light of the first type of device 401 and the adjustment capability of the second type of structure 602 on the emitted light of the second type of device 402 are not conducive to adjustment, for example, when n1=n3 and n2=n4, if d1=d3 and d2=d4 are set, the thickness of the film layer in at least one of the first type of structure 601 and the second type of structure 602 is not conducive to the formation of a distributed Bragg reflector, so that the first type of device 401 and the second type of device 402 cannot have better light-emitting efficiency and more appropriate viewing angle and viewing angle brightness decay at the same time, which is not conducive to more fully improving the display effect and the peep-proof effect of the display panel 10.

[0150] In some optional embodiments, d5=d1, d6=d2, or, d5=d3, d6=d4.

[0151] In this optional embodiment, by setting d5=d1, d6=d2, or, d5=d3, d6=d4, the thickness of the film layer structure in the third type of structure 603 can be the same as that in the first type of structure 601 or the second type of structure 602, so that the height of the third type of structure 603 compared with the first type of structure 601 or the second type of structure 602 is the same or similar, so that the third type of structure 603 and the first type of structure 601 or the second type of structure 602 do not easily have a large height difference, which can facilitate the formation and preparation of subsequent film layers.

[0152] In some optional embodiments, the refractive index of the first functional layer 610 in the third type of structure 603 is n5, the thickness of the first functional layer 610 in the third type of structure 603 is d5, n5*d5*4 = w3, and / or, the refractive index of the second functional layer 620 in the third type of structure 603 is n6, the thickness of the second functional layer 620 in the third type of structure 603 is d6, n6*d6*4 = w3.

[0153] Optionally, d5 < d6.

[0154] Optionally, d3 < d5 < d1, and d4 < d6 < d2 (not shown in the figure).

[0155] In the optional embodiments, by setting n5*d5*4 = w3 and n6*d6*4 = w3, i.e., by setting the thicknesses of the first functional layer 610 and the second functional layer 620 in the third type of structure 603 according to the refractive index of each film layer structure in the third type of structure 603 and the wavelength of the third type of device 403, the third type of structure 603 can better form a distributed Bragg reflector, so that the third type of structure 603 can better adjust the luminous efficiency, the viewing angle color shift, and the viewing angle luminance decay of the third type of device 403, and it is beneficial to more fully improve the display effect and the peep-proof effect of the display panel 10.

[0156] In some optional embodiments, the film layer located at the edge of the functional structure 600 on the side of the functional structure 600 facing the light emitting device 400 can be the first functional layer 610.

[0157] Optionally, the film layer located at the edge of the functional structure 600 on the side of the functional structure 600 facing the light emitting device 400 can be the first functional layer 610, which can mean that the film layer closest to the light emitting device 400 in the functional structure 600 can be the first functional layer 610. For example, the film layer closest to the second electrode 430 in the functional structure 600 can be the first functional layer 610.

[0158] In these optional embodiments, by setting the film layer located at the edge of the functional structure 600 on the side of the functional structure 600 facing the light emitting device 400 as the first functional layer 610, the light emitted from the light emitting device 400 can enter into the functional structure 600 through the first functional layer 610 with a higher refractive index, which can facilitate improving the adjustment of the functional structure 600 on the light emitted by the light emitting device 400, so that the light emitting device 400 can have better luminous efficiency and more appropriate viewing angle color shift and viewing angle luminance decay.

[0159] In some embodiments of the present application, there are various ways to set the position of the functional structure 600. The position of the functional structure 600 can be set according to the material of the functional structure 600 and the use requirement of the functional structure 600.

[0160] Figure 6 FIG. 10 is a partial cross-sectional view of a display panel 10 according to an embodiment of the present application.

[0161] In some optional embodiments, as shown in FIG. 10, the display panel 10 further comprises an encapsulation layer 500 disposed on the side of the functional structure 600 away from the substrate 100. The functional structure 600 can be disposed between the light-emitting device 400 and the encapsulation layer 500. The encapsulation layer 500 can be used to encapsulate the light-emitting device 400 and the functional structure 600, so that the light-emitting device 400 and the functional structure 600 are not easily affected by external moisture, and the display panel 10 can have better working stability. Figure 6

[0162] Optionally, the encapsulation layer 500 can comprise a first encapsulation layer 510. Optionally, the material of the first encapsulation layer 510 can comprise an inorganic material, so that the first encapsulation layer 510 can better reduce the influence of moisture on the working of the light-emitting device 400 and the functional structure 600. For example, the first encapsulation layer 510 can be prepared by a chemical vapor deposition (CVD) process.

[0163] Optionally, the first encapsulation layer 510 can comprise a first unit 511 disposed on the side of the first type of structure 601 away from the substrate 100, a second unit 512 disposed on the side of the first type of structure 601 away from the substrate 100, and a third unit 514 disposed on the side of the third type of structure 603 away from the substrate 100. The first unit 511 can be used to more independently encapsulate the first type of structure 601 and the first type of device 401, the second unit 512 can be used to more independently encapsulate the second type of structure 602 and the second type of device 402, and the third unit 514 can be used to more independently encapsulate the third type of structure 603 and the third type of device 403.

[0164] Optionally, the encapsulation layer 500 can further comprise a second encapsulation layer 520 on the side of the first encapsulation layer 510 away from the substrate 100, to further improve the encapsulation effect of the display panel 10. Optionally, the material of the second encapsulation layer 520 can comprise an organic material, so that the second encapsulation layer 520 has better flowability during the preparation of the display panel 10, so that the surface on the side of the second encapsulation layer 520 away from the substrate 100 can have better flatness, which can facilitate the formation of subsequent film layers. For example, the second encapsulation layer 520 can be prepared by an inkjet printing (IJP) technology process.

[0165] ​Optionally, the encapsulation layer 500 can further include a third encapsulation layer 530 disposed on the side of the second encapsulation layer 520 away from the substrate 100, so as to further improve the encapsulation effect of the display panel 10. Optionally, the material of the third encapsulation layer 530 can include inorganic material, so that the third encapsulation layer 530 can better reduce the influence of water vapor on the working of the light emitting device 400 and the functional structure 600. For example, the third encapsulation layer 530 can be prepared by a chemical vapor deposition process.

[0166] Optionally, the functional structure 600 is at least partially located in the isolation opening 301. For example, as shown in FIG. 6B, the functional structure 600 can be completely located in the isolation opening 301 and covered by the encapsulation layer 500. The isolation structure 300 can be used to divide the functional structure 600 into the first type of structure 601, the second type of structure 602, and the third type of structure 603. Figure 6

[0167] Optionally, the number of the light emitting device 400 is multiple, and the functional structures 600 corresponding to adjacent light emitting devices 400 are arranged at intervals. For example, the functional structures 600 corresponding to adjacent light emitting devices 400 can be arranged at intervals by the isolation structure 300.

[0168] Optionally, the material of the functional structure 600 includes evaporation material. Specifically, the evaporation material can refer to a material that can be prepared by an evaporation process, so that the functional structure 600 can be prepared by the evaporation process, and the isolation structure 300 can shield and separate the material of the functional structure 600.

[0169] For example, the material of the functional structure 600 can include organic material. Further, the material of the functional structure 600 can include organic transparent material, so as to better reduce the shielding effect of the functional structure 600 on the light emitted by the light emitting device 400.

[0170] In these optional embodiments, the isolation structure 300 can shield and separate the material of the functional structure 600 to form the first type of structure 601, the second type of structure 602, and the third type of structure 603. Therefore, in the preparation process of the display panel 10, the shielding and separating effect of the isolation structure 300 on the light emitting device 400 and the functional structure 600 can be used to realize the separate preparation of the light emitting device 400 of different colors and the functional structure 600 above the light emitting device 400 of different colors.

[0171] For example, the preparation of the first unit 511, the first type of structure 601, the first device 401, the second unit 512, the second type of structure 602, the second device 402, the third unit 514, the third type of structure 603, and the third device 403 can be sequentially completed by using the isolation structure 300.

[0172] Figures 7 to 9 ​is a preparation process schematic diagram of a preparation method of a display panel 10 provided by an embodiment of the present application.

[0173] As shown in Figures 7 to 9 As an example, the preparation of the first electrode 410 of each light emitting device 400 can be performed first. Then the full-area evaporation of the materials of the light emitting layer 420 and the second electrode 430 in the first type device 401 can be performed, the isolation structure 300 can isolate part of the materials of the light emitting layer 420 and the second electrode 430 in the first type device 401, then the full-area evaporation of the materials of the first type structure 601 is performed, the isolation structure 300 can isolate part of the materials of the first type structure 601, then the full-area preparation of the materials of the first encapsulation layer 510 is performed. Then the materials of the first encapsulation layer 510 outside the first opening 301a are removed to form the first unit 511, then the materials of the first type structure 601 outside the first opening 301a are removed to form the first type structure 601, and then the materials of the second electrode 430 of the first type device 401 and the materials of the light emitting layer 420 of the first type device 401 outside the first opening 301a are removed in sequence to form the first type device 401 arranged corresponding to the first opening 301a.

[0174] Then the full-area evaporation of the materials of the light emitting layer 420 and the second electrode 430 in the second type device 402 is performed, the isolation structure 300 can isolate part of the materials of the light emitting layer 420 and the second electrode 430 in the second type device 402, then the full-area evaporation of the materials of the second type structure 602 is performed, the isolation structure 300 can isolate part of the materials of the second type structure 602, then the full-area preparation of the materials of the first encapsulation layer 510 is performed. Then the materials of the first encapsulation layer 510 outside the second opening 301b are removed to form the second unit 512, then the materials of the second type structure 602 outside the second opening 301b are removed to form the second type structure 602, and then the materials of the second electrode 430 of the second type device 402 and the materials of the light emitting layer 420 of the second type device 402 outside the second opening 301b are removed in sequence to form the second type device 402 arranged corresponding to the second opening 301b.

[0175] Then, the materials of the light-emitting layer 420 and the second electrode 430 in the third type device 403 can be vapor-deposited across the entire surface. The isolation structure 300 can isolate a portion of the materials of the light-emitting layer 420 and the second electrode 430 in the third type device 403. Then, the materials of the third type structure 603 can be vapor-deposited across the entire surface. The isolation structure 300 can isolate a portion of the materials of the third type structure 603. Then, the materials of the first encapsulation layer 510 are prepared across the entire surface. Then, the materials of the first encapsulation layer 510 outside the third opening 301c are removed to form the third unit 514. Then, the materials of the third type structure 603 outside the third opening 301c are removed to form the third type structure 603. Then, the materials of the second electrode 430 and the light-emitting layer 420 of the third type device 403 outside the third opening 301c are removed sequentially to form the third type device 403 corresponding to the third opening 301c.

[0176] Figure 10 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application.

[0177] In some other alternative embodiments, such as Figure 10 As shown, at least a portion of the functional structure 600 can be reused as at least a portion of the encapsulation layer 500, enabling the fabrication of at least a portion of the encapsulation layer 500 to be carried out simultaneously with the fabrication of the functional structure 600 during the fabrication of the display panel 10, thereby significantly improving the fabrication efficiency of the display panel 10. Furthermore, by reusing at least a portion of the functional structure 600 as at least a portion of the encapsulation layer 500, the thickness of the display panel 10 can be significantly reduced, improving the structural compactness of the display panel 10.

[0178] Optionally, the encapsulation layer 500 may include the first encapsulation layer 510, the second encapsulation layer 520 and the third encapsulation layer 530 in any of the foregoing embodiments. At least some functional structures 600 may be reused as at least some encapsulation layers 500, which may mean that at least some functional structures 600 may be reused as at least one of the first encapsulation layer 510, the second encapsulation layer 520 and the third encapsulation layer 530.

[0179] For ease of description, the following embodiments will be described using the example that at least some functional layers can be reused as the first encapsulation layer 510.

[0180] Optionally, the functional structure 600 includes a packaging portion 600a that is reused as a first packaging layer 510, and the material of the packaging portion 600a includes a chemical vapor deposition material.

[0181] Exemplarily, the material of the encapsulation portion 600a comprises an inorganic material. Specifically, the material of the encapsulation portion 600a comprises an inorganic transparent material, so as to better reduce the shielding effect of the encapsulation portion 600a on the light emitted by the light emitting device 400. For example, the material of the encapsulation portion 600a comprises at least one of silicon nitride, silicon oxynitride and silicon oxide.

[0182] Optionally, the encapsulation portion 600a is at least partially located in the isolation opening 301, and the encapsulation portion 600a covers the sidewall of the isolation structure 300 on the side facing the isolation opening 301, so that the encapsulation portion 600a can better play a better encapsulation effect.

[0183] Optionally, part of the encapsulation portion 600a is located on the side of the isolation structure 300 away from the substrate 100, so that the encapsulation portion 600a can have a larger size, which can facilitate the improvement of the encapsulation path of the encapsulation portion 600a.

[0184] Optionally, the encapsulation portion 600a located on the side of the isolation structure 300 away from the substrate 100 is spaced apart from the isolation structure 300.

[0185] Optionally, the functional structure 600 is at least partially located in the isolation opening 301. For example, the encapsulation portion 600a can be partially located in the isolation opening 301.

[0186] Optionally, the functional structures 600 corresponding to adjacent light emitting devices 400 are spaced apart, for example, the encapsulation portions 600a of the functional structures 600 corresponding to adjacent light emitting devices 400 can be spaced apart.

[0187] In some embodiments, as Figure 10 described, only part of the functional structures 600 can be multiplexed as at least part of the encapsulation layer 500.

[0188] Optionally, the functional structure 600 comprises the encapsulation portion 600a multiplexed as at least part of the encapsulation layer 500 and the functional portion 600b located between the encapsulation portion 600a and the light emitting device 400.

[0189] Optionally, the material of the functional portion 600b comprises an evaporation material. Specifically, the evaporation material can refer to a material that can be prepared by an evaporation process, so that the functional portion 600b can be prepared by an evaporation process, and the isolation structure 300 can shield the material of the functional portion 600b to a certain extent.

[0190] Exemplarily, the material of the functional portion 600b can comprise an organic material. Further, the material of the functional portion 600b can comprise an organic transparent material, so as to better reduce the shielding effect of the functional portion 600b on the light emitted by the light emitting device 400.

[0191] Optionally, the functional structure 600 is at least partially located in the isolation gap 301. For example, the functional part 600b can be located in the isolation gap 301.

[0192] Optionally, the functional structures 600 corresponding to the adjacent light emitting devices 400 are spaced apart. For example, the functional parts 600b of the functional structures 600 corresponding to the adjacent light emitting devices 400 can be spaced apart by the isolation structure 300.

[0193] In this embodiment, the isolation structure 300 can shield and separate the material of the functional part 600b to form the functional part 600b of the first type of structure 601, the functional part 600b of the second type of structure 602, and the functional part 600b of the third type of structure 603. Therefore, in the preparation process of the display panel 10, the shielding and separating effect of the isolation structure 300 on the light emitting device 400 and the functional part 600b of the functional structure 600 can be used to realize the separate preparation of the light emitting devices 400 of different colors and the functional part 600b above the light emitting devices 400 of different colors.

[0194] For example, the preparation of the encapsulation part 600a multiplexed as the first unit 511 in the first type of structure 601, the functional part 600b in the first type of structure 601, the first device 401, the encapsulation part 600a multiplexed as the second unit 512 in the second type of structure 602, the functional part 600b in the second type of structure 602, the second device 402, the encapsulation part 600a multiplexed as the third unit 514 in the third type of structure 603, the functional part 600b in the third type of structure 603, and the third device 403 can be sequentially completed by using the isolation structure 300.

[0195] Figures 11 to 13 is a preparation process schematic diagram of another embodiment of a display panel 10 provided by the present application.

[0196] As Figures 11 to 13As an example, the preparation of the first electrode 410 of each light emitting device 400 can be performed first. Then the blanket evaporation of the material of the light emitting layer 420 and the second electrode 430 in the first type of device 401 can be performed, the isolation structure 300 can isolate part of the material of the light emitting layer 420 and the second electrode 430 in the first type of device 401, then the blanket evaporation of the material of the functional part 600b of the first type of structure 601 can be performed, the isolation structure 300 can isolate part of the material of the functional part 600b of the first type of structure 601, then the blanket preparation of the material of the encapsulation part 600a of the first type of structure 601 which is multiplexed as the first unit 511 can be performed. Then the material of the encapsulation part 600a of the first type of structure 601 outside the first opening 301a is removed to form the encapsulation part 600a of the first type of structure 601 which is the first unit 511, then the material of the functional part 600b of the first type of structure 601 outside the first opening 301a is removed to form the functional part 600b of the first type of structure 601, then the material of the second electrode 430 of the first type of device 401 and the material of the light emitting layer 420 of the first type of device 401 outside the first opening 301a are removed in sequence to form the first type of device 401 arranged corresponding to the first opening 301a.

[0197] Then the blanket evaporation of the material of the light emitting layer 420 and the second electrode 430 in the second type of device 402 can be performed, the isolation structure 300 can isolate part of the material of the light emitting layer 420 and the second electrode 430 in the second type of device 402, then the blanket evaporation of the material of the functional part 600b of the second type of structure 602 can be performed, the isolation structure 300 can isolate part of the material of the functional part 600b of the second type of structure 602, then the blanket preparation of the material of the encapsulation part 600a of the second type of structure 602 which is multiplexed as the second unit 512 can be performed. Then the material of the encapsulation part 600a of the second type of structure 602 outside the second opening 301b is removed to form the encapsulation part 600a of the second type of structure 602 which is the second unit 512, then the material of the functional part 600b of the second type of structure 602 outside the second opening 301b is removed to form the functional part 600b of the second type of structure 602, then the material of the second electrode 430 of the second type of device 402 and the material of the light emitting layer 420 of the second type of device 402 outside the second opening 301b are removed in sequence to form the second type of device 402 arranged corresponding to the second opening 301b.

[0198] Then the material of the light emitting layer 420 and the second electrode 430 in the third type of device 403 can be prepared by full-area evaporation, the isolation structure 300 can isolate part of the material of the light emitting layer 420 and the second electrode 430 in the third type of device 403, then the material of the functional part 600b of the third type of structure 603 can be prepared by full-area evaporation, the isolation structure 300 can isolate part of the material of the functional part 600b of the third type of structure 603, then the material of the encapsulation part 600a of the third type of structure 603 which is multiplexed as the third unit 514 can be prepared by full-area evaporation. Then the material of the encapsulation part 600a of the third type of structure 603 outside the third opening 301c is removed to form the encapsulation part 600a of the third type of structure 603, i.e., the third unit 514, then the material of the functional part 600b of the third type of structure 603 outside the third opening 301c is removed to form the functional part 600b of the third type of structure 603, then the material of the second electrode 430 of the third type of device 403 and the material of the light emitting layer 420 of the third type of device 403 outside the third opening 301c are removed in sequence to form the third type of device 403 arranged corresponding to the third opening 301c.

[0199] Figure 14 is a partial sectional view of a display panel 10 provided by another embodiment of the present application. In order to facilitate the display of the various film layers in the functional structure 600, the number of the first functional layer 610 and the second functional layer 620 in each functional structure 600 is simplified, which does not represent the actual number. Figure 14 Figure 14 The number of the first functional layer 610 and the second functional layer 620 in each functional structure 600 is simplified, which does not represent the actual number.

[0200] In some other embodiments, the functional structure 600 can be multiplexed as at least part of the encapsulation layer 500, i.e., the entire functional structure 600 can be multiplexed as at least part of the encapsulation layer 500. For example, the functional structure 600 can not include the functional part 600b in the foregoing embodiments, and the encapsulation part 600a of the functional structure 600 can be multiplexed as at least part of the encapsulation layer 500.

[0201] Optionally, the material of the first functional layer 610 in the encapsulation part 600a includes silicon nitride or silicon oxynitride, and the material of the second functional layer 620 in the encapsulation part 600a includes silicon oxide, so as to achieve the refractive index of the first functional layer 610 being greater than the refractive index of the second functional layer 620.

[0202] In this embodiment, during the preparation of the display panel 10, the shielding and isolating effect of the isolation structure 300 on the light emitting device 400 can be utilized to achieve the separate preparation of different color light emitting devices 400 and different color light emitting devices 400.

[0203] ​For example, the preparation of the first type structure 601 multiplexed as the first unit 511, the first type device 401, the second type structure 602 multiplexed as the second unit 512, the second type device 402, the third type structure 603 multiplexed as the third unit 514, and the third type device 403 can be sequentially completed by using the isolation structure 300.

[0204] Figures 15 to 17 is a preparation process schematic diagram of a preparation method of a display panel 10 provided by another embodiment of the present application.

[0205] As shown in Figures 15 to 17 As an example, the preparation of the first electrode 410 of each light emitting device 400 can be performed first. Then the full-area evaporation of the materials of the light emitting layer 420 and the second electrode 430 in the first type device 401 can be performed, the isolation structure 300 can cut off part of the materials of the light emitting layer 420 and the second electrode 430 in the first type device 401, and then the full-area evaporation of the materials of the first type structure 601 is performed. Then the materials of the first type structure 601 outside the first opening 301a are removed to form the first type structure 601 multiplexed as the first unit 511, and then the materials of the second electrode 430 of the first type device 401 and the materials of the light emitting layer 420 of the first type device 401 outside the first opening 301a are sequentially removed to form the first type device 401 arranged corresponding to the first opening 301a.

[0206] Then the full-area evaporation of the materials of the light emitting layer 420 and the second electrode 430 in the second type device 402 is performed, the isolation structure 300 can cut off part of the materials of the light emitting layer 420 and the second electrode 430 in the second type device 402, and then the full-area evaporation of the materials of the second type structure 602 is performed. Then the materials of the second type structure 602 outside the second opening 301b are removed to form the second type structure 602 multiplexed as the second unit 512, and then the materials of the second electrode 430 of the second type device 402 and the materials of the light emitting layer 420 of the second type device 402 outside the second opening 301b are sequentially removed to form the second type device 402 arranged corresponding to the second opening 301b.

[0207] Then the full-area evaporation of the materials of the light emitting layer 420 and the second electrode 430 in the third type device 403 is performed, the isolation structure 300 can cut off part of the materials of the light emitting layer 420 and the second electrode 430 in the third type device 403, and then the full-area evaporation of the materials of the third type structure 603 is performed. Then the materials of the third type structure 603 outside the third opening 301c are removed to form the third type structure 603 multiplexed as the third unit 514, and then the materials of the second electrode 430 of the third type device 403 and the materials of the light emitting layer 420 of the third type device 403 outside the third opening 301c are sequentially removed to form the third type device 403 arranged corresponding to the third opening 301c.

[0208] Embodiments of the second aspect of the present application provide a display device, the display device comprising the display panel 10 of any of the above embodiments. Since the display device provided by the embodiments of the second aspect of the present application comprises the display panel 10 of any of the embodiments of the first aspect, the display device provided by the embodiments of the second aspect of the present application has the beneficial effects of the display panel 10 of any of the embodiments of the first aspect, which will not be described here again.

[0209] The display device in the embodiments of the present application includes but is not limited to a mobile phone, a personal digital assistant (PDA), a tablet computer, an electronic book, a television, an access control, a smart fixed phone, a console, and the like device having a display function.

[0210] In accordance with the embodiments of the present application as described above, these embodiments do not describe all the details and do not limit the application to only the specific embodiments. Obviously, according to the above description, many modifications and changes can be made. The present description selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well utilize the present application and make modifications and uses on the basis of the present application. The present application is limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized by, The application relates to a display panel, comprising: a substrate; an isolation structure arranged on one side of the substrate and enclosing an isolation opening, the isolation opening comprising a first opening and a second opening; a light-emitting device arranged on one side of the substrate and at least partially located in the isolation opening, the light-emitting device comprising a first type of device arranged corresponding to the first opening and a second type of device arranged corresponding to the second opening, the light-emitting color of the first type of device being different from that of the second type of device; a functional structure arranged on the side of the light-emitting device away from the substrate, the functional structure comprising a first functional layer and a second functional layer, the refractive index of the first functional layer being greater than that of the second functional layer, the first functional layer and the second functional layer being alternately stacked in the thickness direction of the display panel, the functional structure comprising a first type of structure arranged on the side of the first type of device away from the substrate and a second type of structure arranged on the side of the second type of device away from the substrate, wherein the total number of layers of the first functional layer and the second functional layer in a single first type of structure is s1, the total number of layers of the first functional layer and the second functional layer in a single second type of structure is s2, and s1 is not equal to s2.

2. The display panel of claim 1, wherein, the difference between the refractive index of the first functional layer and the refractive index of the second functional layer in the first type of structure is a1, the difference between the refractive index of the first functional layer and the refractive index of the second functional layer in the second type of structure is a2, and a1 is not equal to a2.

3. The display panel of claim 1, wherein, 2<=s1<=20, and / or, 2<=s2<=20.

4. The display panel of claim 1, wherein, the wavelength of the light-emitting color of the first type of device is w1, and the wavelength of the light-emitting color of the second type of device is w2, w1>w2, wherein s1>s2, and / or, a1>a2.

5. The display panel of claim 4, wherein, the light-emitting color of the first type of device is red, and the light-emitting color of the second type of device is blue.

6. The display panel of claim 1, wherein, the material of the first functional layer in the first type of structure is different from that of the first functional layer in the second type of structure, and / or, the material of the second functional layer in the first type of structure is different from that of the second functional layer in the second type of structure.

7. The display panel of claim 1, wherein, the thickness of the first functional layer in the first type of structure is d1, the thickness of the first functional layer in the second type of structure is d3, d1 is not equal to d3, and / or, the thickness of the second functional layer in the first type of structure is d2, the thickness of the second functional layer in the second type of structure is d4, d2 is not equal to d4.

8. The display panel of claim 7, wherein, the wavelength of the light-emitting color of the first type of device is w1, and the wavelength of the light-emitting color of the second type of device is w2, wherein the refractive index of the first functional layer in the first type of structure is n1, n1*d1*4=w1, and / or, the refractive index of the second functional layer in the first type of structure is n2, n2*d2*4=w1, and / or, the refractive index of the first functional layer in the second type of structure is n3, n3*d3*4=w2, and / or, the refractive index of the second functional layer in the second type of structure is n4, n4*d4*4=w2.

9. The display panel of claim 1, wherein, The isolation opening comprises a third opening, the light emitting device comprises a third type of device arranged corresponding to the third opening, the light emitting colors of the first type of device, the second type of device and the third type of device are different from each other, the functional structure comprises a third type of structure arranged on a side of the third type of device away from the substrate, the wavelength of the light emitting color of the first type of device is w1, the wavelength of the light emitting color of the second type of device is w2, the wavelength of the light emitting color of the third type of device is w3, w2 < w3 < w1, wherein the total number of layers of the first functional layer and the second functional layer in a single third type of structure is s3, s2 ≤ s3 ≤ s1, and / or the difference between the refractive index of the first functional layer and the refractive index of the second functional layer in the third type of structure is a3, a2 ≤ a3 ≤ a1.

10. The display panel of claim 9, wherein, 2≤s3≤20。 11. The display panel of claim 9, wherein, The light emitting color of the first type of device is red, the light emitting color of the second type of device is blue, and the light emitting color of the third type of device is green.

12. The display panel of claim 9, wherein, The thickness of the first functional layer in the third type of structure is d5, and the thickness of the second functional layer in the third type of structure is d6, wherein the thickness of the first functional layer in the first type of structure is d1, the thickness of the second functional layer in the first type of structure is d2, d5 = d1, d6 = d2, or, the thickness of the first functional layer in the second type of structure is d3, the thickness of the second functional layer in the second type of structure is d4, d5 = d3, d6 = d4.

13. The display panel of claim 9, wherein, The refractive index of the first functional layer in the third type of structure is n5, and the thickness of the first functional layer in the third type of structure is d5, n5 * d5 * 4 = w3, and / or, the refractive index of the second functional layer in the third type of structure is n6, and the thickness of the second functional layer in the third type of structure is d6, n6 * d6 * 4 = w3.

14. The display panel of claim 1, wherein, The film layer of the functional structure located at the edge of the side of the functional structure facing the light emitting device is the first functional layer.

15. The display panel of claim 1, wherein, The refractive index of the first functional layer is not less than 1.6 and not more than 2.3, and / or the refractive index of the second functional layer is not less than 1.3 and not more than 1.

8.

16. The display panel of claim 1, wherein, The functional structure is at least partially located in the isolation opening.

17. The display panel of claim 15, wherein, The number of light emitting devices is multiple, and the functional structures corresponding to adjacent light emitting devices are arranged with a spacing therebetween.

18. The display panel of claim 1, wherein, The isolation structure comprises a first isolation portion and a second isolation portion located on a side of the first isolation portion away from the substrate, and the second isolation portion is arranged protruding from the first isolation portion towards the isolation opening.

19. The display panel of claim 18, wherein, The light emitting device comprises a first electrode, a light emitting layer and a second electrode stacked in sequence in a direction away from the substrate, the material of the isolation structure comprises a conductive material, and the second electrode is connected with the isolation structure.

20. The display panel of claim 19, wherein, The isolation structure further comprises a conductive portion located on a side of the first isolation portion facing the substrate, the conductive portion is arranged protruding from the first isolation portion towards the isolation opening, and the second electrode is connected with the conductive portion.

21. The display panel of any one of claims 1 to 20, wherein, The display panel further comprises an encapsulation layer arranged on a side of the functional structure away from the substrate.

22. The display panel of claim 21, wherein, The material of the functional structure comprises an evaporation material.

23. The display panel of claim 21, wherein, The material of the functional structure comprises an organic material.

24. The display panel of claim 21, wherein, The material of the functional structure comprises an organic transparent material.

25. The display panel of any one of claims 1 to 20, wherein, At least part of the functional structure is multiplexed as at least part of the encapsulation layer.

26. The display panel of claim 25, wherein, The functional structure comprises an encapsulation part multiplexed as at least part of the encapsulation layer and a functional part between the encapsulation part and the light-emitting device, and the material of the functional part comprises an evaporation material.

27. The display panel of claim 25, wherein, The encapsulation layer comprises a first encapsulation layer, a second encapsulation layer on a side of the first encapsulation layer away from the substrate, and a third encapsulation layer on a side of the second encapsulation layer away from the substrate, and at least part of the functional structure is multiplexed as at least one of the first encapsulation layer, the second encapsulation layer, and the third encapsulation layer.

28. The display panel of claim 27, wherein, The functional structure comprises an encapsulation part multiplexed as the first encapsulation layer, and the material of the encapsulation part comprises a chemical vapor deposition material.

29. The display panel of claim 28, wherein, The material of the encapsulation part comprises an inorganic material.

30. The display panel of claim 28, wherein, The material of the encapsulation part comprises an inorganic transparent material.

31. The display panel of claim 28, wherein, The material of the encapsulation part comprises at least one of silicon nitride, silicon oxynitride, and silicon oxide.

32. The display panel of claim 28, wherein, The material of the first functional layer in the encapsulation part comprises silicon nitride or silicon oxynitride, and the material of the second functional layer in the encapsulation part comprises silicon oxide.

33. The display panel of claim 27, wherein, The functional structure comprises an encapsulation part multiplexed as the first encapsulation layer, the encapsulation part is at least partially located in the isolation opening, and the encapsulation part covers the sidewall of the isolation structure on a side of the isolation structure facing the isolation opening.

34. The display panel of claim 33, wherein, Part of the encapsulation part is located on a side of the isolation structure away from the substrate.

35. The display panel of claim 34, wherein, The encapsulation part and the isolation structure are spaced apart on a side of the isolation structure away from the substrate.

36. A display device comprising: The display panel comprises any one of claims 1-35.

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