Display panel, preparation method of display panel and display device

Abstract

The invention discloses a display panel, a preparation method of the display panel and a display device.The display panel comprises a substrate, an isolation structure, a light emitting unit, a first packaging layer and a supporting structure, the isolation structure is arranged on one side of the substrate, and an isolation opening is defined by the isolation structure; the light-emitting unit is arranged in the isolation opening; the first packaging layer comprises a plurality of packaging parts arranged at intervals, the packaging parts enclose to form a first gap located on one side, close to the substrate, of the isolation structure, the first gap is a closed gap, and the orthographic projection of the first gap on the substrate and the orthographic projection of the isolation structure on the substrate are at least partially overlapped; the light filtering layer comprises a plurality of light filtering units, and at least part of the light filtering units are located in the isolation opening and arranged on the side, away from the substrate, of the packaging part.

Description

Technical Field

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

[0002] Organic Light Emitting Display (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0004] The purpose of the present application is to provide a display panel, a method for manufacturing a display panel and a display device, which can improve the performance of the display panel.

[0005] In a first aspect, the present application provides a display panel, comprising a substrate, an isolation structure, a light-emitting unit, a first packaging layer and a filter layer, wherein the isolation structure is arranged on one side of the substrate and encloses an isolation opening; the light-emitting unit is arranged in the isolation opening; the first packaging layer comprises a plurality of packaging parts arranged at intervals, the packaging parts enclose a first gap located on a side of the isolation structure close to the substrate, the first gap is a closed gap, and an orthographic projection of the first gap on the substrate at least partially overlaps with an orthographic projection of the isolation structure on the substrate; the filter layer comprises a plurality of filter units, at least some of which are located in the isolation opening and are arranged on a side of the packaging part facing away from the substrate.

[0006] In some embodiments, the encapsulation portion includes a first segment, a second segment, and a third segment, the first segment covers the light-emitting unit, the second segment is located on a side wall of the isolation structure facing the isolation opening, and the third segment is located on a side of the isolation structure facing away from the substrate, and forms a second gap with a side surface of the isolation structure facing away from the substrate; the display panel further includes a supporting structure disposed in the second gap;

[0007] Preferably, at least part of the supporting structure and the filter unit are provided in the same layer and with the same material.

[0008] In some embodiments, the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit, the plurality of encapsulation parts include a first encapsulation part, a second encapsulation part, and a third encapsulation part, the first encapsulation part is used to encapsulate the first light-emitting unit, the second encapsulation part is used to encapsulate the second light-emitting unit, and the third encapsulation part is used to encapsulate the third light-emitting unit;

[0009] Preferably, the plurality of filter units include a first filter unit, a second filter unit and a third filter unit, the first filter unit is arranged on a side of the first packaging portion facing away from the substrate, the second filter unit is arranged on a side of the second packaging portion facing away from the substrate, and the third filter unit is arranged on a side of the third packaging portion facing away from the substrate;

[0010] Preferably, any two of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit have different colors;

[0011] Preferably, the plurality of support structures include a first support structure, a second support structure and a third support structure, the first support structure is located in a second gap between a third segment of the first packaging portion and a side surface of the isolation structure facing away from the substrate, the second support structure is located in a second gap between a third segment of the second packaging portion and a side surface of the isolation structure facing away from the substrate, and the third support structure is located in a second gap between a third segment of the third packaging portion and a side surface of the isolation structure facing away from the substrate;

[0012] Preferably, the first encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a first sub-gap with a surface of the side of the isolation structure away from the substrate, the second encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a second sub-gap with a surface of the side of the isolation structure away from the substrate, and the third encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a third sub-gap with a surface of the side of the isolation structure away from the substrate;

[0013] Wherein, along a direction perpendicular to the plane where the substrate is located, the height of the first sub-gap, the height of the second sub-gap and the height of the third sub-gap are different from each other;

[0014] Preferably, any two of the first supporting structure, the second supporting structure and the third supporting structure are made of different materials;

[0015] Preferably, at least part of the first supporting structure is made of the same material as the first filter unit, at least part of the second supporting structure is made of the same material as the second filter unit, and at least part of the third supporting structure is made of the same material as the third filter unit.

[0016] In some embodiments, along a direction perpendicular to the plane where the substrate is located, a first distance is provided between a side of the first filter unit away from the substrate and the surface of the substrate, a second distance is provided between a side of the second filter unit away from the substrate and the surface of the substrate, and a third distance is provided between a side of the third filter unit away from the substrate and the surface of the substrate, and the first distance, the second distance and the third distance are the same;

[0017] Preferably, the light emission wavelength of the first light emitting unit is greater than the wavelength of the second light emitting unit, and the wavelength of the second light emitting unit is greater than the wavelength of the third light emitting unit;

[0018] Preferably, along a direction perpendicular to the plane where the substrate is located, the first distance, the second distance and the third distance are the maximum distances from a side of the filter unit away from the substrate to the substrate, or are the average distances from a side of the filter unit away from the substrate to the substrate, or are the distances between the filter unit and the substrate passing through the center of the light-emitting unit along a direction perpendicular to the plane where the substrate is located.

[0019] In some embodiments, the thickness of the first light emitting unit is greater than the thickness of the second light emitting unit, and the thickness of the second light emitting unit is greater than or equal to the thickness of the third light emitting unit;

[0020] Preferably, along a direction perpendicular to the substrate, the thickness of the first filter unit is less than the thickness of the second filter unit, and the thickness of the second filter unit is less than or equal to the thickness of the third filter unit;

[0021] Preferably, the thickness of the filter unit is the thickness of the filter unit along a direction perpendicular to the substrate and passing through a center line of the light emitting unit located on a side of the filter unit close to the substrate.

[0022] In some embodiments, the light-emitting unit includes a first electrode, a light-emitting functional layer, and a second electrode, and the first electrode, the light-emitting functional layer, and the second electrode are stacked in a direction away from the substrate;

[0023] Preferably, part of the support structure is provided in the same layer and material as the second electrode;

[0024] Preferably, the second electrode is electrically connected to the isolation structure.

[0025] In some embodiments, a side of the first segment facing away from the substrate is connected to a side of the second segment facing the isolation opening to form a first gap;

[0026] Preferably, the first encapsulation layer comprises an inorganic material.

[0027] In some embodiments, the isolation structure includes a first isolation portion and a second isolation portion disposed on a side of the first isolation portion facing away from the substrate, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate;

[0028] Preferably, the second isolation portion includes a first surface facing the substrate, a second surface facing away from the substrate, and a side surface connecting the first surface and the second surface, the second segment includes a first portion, a second portion, and a third portion connected in sequence, the first portion is located on a side of the first isolation portion facing the isolation opening, the second portion is located on a portion of the first surface, the third portion is located on the side surface, and the third portion is connected to a side of the first segment facing away from the substrate to form a first gap;

[0029] Preferably, the display panel further comprises a pixel definition layer, the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, the pixel definition portion is located between the substrate and the isolation structure, and the pixel opening is connected to the corresponding isolation opening;

[0030] Preferably, the first segment includes a fourth portion and a fifth portion disposed on a side of the fourth portion close to the isolation structure, an orthographic projection of the fourth portion on the substrate is located within an orthographic projection of the pixel opening on the substrate, an orthographic projection of the fifth portion on the substrate is located within an orthographic projection of the pixel defining portion on the substrate, and the fifth portion is connected to the third portion of the second segment to form a first gap;

[0031] Preferably, the orthographic projection of the second surface on the substrate is located within the orthographic projection of the first surface on the substrate;

[0032] Preferably, the isolation structure further includes a third isolation portion, and the third isolation portion is arranged on a side of the first isolation portion facing the substrate.

[0033] In some embodiments, the display panel further includes a second encapsulation layer, the second encapsulation layer covers a side of the filter unit facing away from the substrate;

[0034] Preferably, the material of the second encapsulation layer comprises an organic material;

[0035] Preferably, the display panel further comprises a third encapsulation layer, and the third encapsulation layer is arranged on a side of the second encapsulation layer away from the substrate;

[0036] Preferably, the material of the third encapsulation layer includes an inorganic material.

[0037] In some embodiments, the display panel further includes a light shielding layer, the light shielding layer includes a light shielding unit, and the light shielding unit is located on a side of the isolation structure away from the substrate;

[0038] Preferably, the shading unit is located between two adjacent filter units, and the orthographic projection of the shading unit on the substrate partially overlaps with the orthographic projection of the adjacent filter unit on the substrate;

[0039] Preferably, the orthographic projection of the shading unit on the substrate is located within the orthographic projection of the isolation structure on the substrate;

[0040] Preferably, the side wall of the filter unit close to the isolation structure is an inclined surface or a curved surface;

[0041] Preferably, the distance from the side surface of the shading unit facing away from the substrate to the substrate surface is greater than or equal to the distance from the side surface of the filtering unit facing away from the substrate surface to the substrate.

[0042] In some embodiments, two adjacent filter units partially overlap along a direction perpendicular to the plane where the substrate is located;

[0043] Preferably, the orthographic projection of the overlapping region of two adjacent filter units on the substrate is located within the orthographic projection of the isolation structure on the substrate.

[0044] According to a second aspect of the present application, there is provided a display panel, comprising a substrate, an isolation structure, a light-emitting unit, a first packaging layer, a filter layer and a support structure, wherein the isolation structure is arranged on one side of the substrate and encloses an isolation opening; the light-emitting unit is arranged in the isolation opening; the first packaging layer comprises a packaging portion, wherein the packaging portion is at least partially located on a side of the light-emitting unit facing away from the substrate, and part of the packaging portion is also located on a side of the isolation structure facing away from the substrate, and a second gap is formed between the surface of the side of the isolation structure facing away from the substrate; the filter layer comprises a filter unit, wherein the filter unit is located in the isolation opening and is arranged on a side of the packaging portion facing away from the substrate; the support structure is arranged in the second gap.

[0045] In some embodiments, at least part of the support structure and the filter unit are provided in the same layer and material;

[0046] Preferably, the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the plurality of encapsulation parts include a first encapsulation part, a second encapsulation part and a third encapsulation part, the first encapsulation part is used to encapsulate the first light-emitting unit, the second encapsulation part is used to encapsulate the second light-emitting unit, and the third encapsulation part is used to encapsulate the third light-emitting unit;

[0047] Preferably, the plurality of filter units include a first filter unit, a second filter unit and a third filter unit, the first filter unit is arranged on a side of the first packaging portion facing away from the substrate, the second filter unit is arranged on a side of the second packaging portion facing away from the substrate, and the third filter unit is arranged on a side of the third packaging portion facing away from the substrate;

[0048] Preferably, any two of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit have different colors;

[0049] Preferably, the plurality of support structures include a first support structure, a second support structure and a third support structure, the first support structure is located in a second gap between the first packaging portion and a side surface of the isolation structure facing away from the substrate, the second support structure is located in a second gap between the second packaging portion and a side surface of the isolation structure facing away from the substrate, and the third support structure is located in a second gap between the third packaging portion and a side surface of the isolation structure facing away from the substrate;

[0050] Preferably, the first encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a first sub-gap with a surface of the side of the isolation structure away from the substrate, the second encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a second sub-gap with a surface of the side of the isolation structure away from the substrate, and the third encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a third sub-gap with a surface of the side of the isolation structure away from the substrate;

[0051] Wherein, along a direction perpendicular to the plane where the substrate is located, the height of the first sub-gap, the height of the second sub-gap and the height of the third sub-gap are different from each other;

[0052] Preferably, any two of the first supporting structure, the second supporting structure and the third supporting structure are made of different materials;

[0053] Preferably, at least part of the first supporting structure is made of the same material as the first filter unit, at least part of the second supporting structure is made of the same material as the second filter unit, and at least part of the third supporting structure is made of the same material as the third filter unit.

[0054] In some embodiments, along a direction perpendicular to the plane where the substrate is located, a first distance is provided between a side of the first filter unit away from the substrate and the surface of the substrate, a second distance is provided between a side of the second filter unit away from the substrate and the surface of the substrate, and a third distance is provided between a side of the third filter unit away from the substrate and the surface of the substrate, and the first distance, the second distance and the third distance are the same;

[0055] Preferably, the light emission wavelength of the first light emitting unit is greater than the wavelength of the second light emitting unit, and the wavelength of the second light emitting unit is greater than the wavelength of the third light emitting unit;

[0056] Preferably, along a direction perpendicular to the plane where the substrate is located, the first distance, the second distance and the third distance are the maximum distances from a side of the filter unit away from the substrate to the substrate, or are the average distances from a side of the filter unit away from the substrate to the substrate, or are the distances between the filter unit and the substrate passing through the center of the light-emitting unit along a direction perpendicular to the plane where the substrate is located.

[0057] In some embodiments, the thickness of the first light emitting unit is greater than the thickness of the second light emitting unit, and the thickness of the second light emitting unit is greater than or equal to the thickness of the third light emitting unit;

[0058] Preferably, along a direction perpendicular to the substrate, the thickness of the first filter unit is less than the thickness of the second filter unit, and the thickness of the second filter unit is less than or equal to the thickness of the third filter unit;

[0059] Preferably, the thickness of the filter unit is the thickness of the filter unit along a direction perpendicular to the substrate and passing through a center line of the light emitting unit located on a side of the filter unit close to the substrate.

[0060] A third aspect of the present application provides a method for preparing a display panel, comprising:

[0061] An isolation structure is formed on one side of the substrate, and the isolation structure encloses an isolation opening;

[0062] A light-emitting unit and a first encapsulation layer are formed in the isolation opening, wherein the first encapsulation layer includes a plurality of encapsulation parts arranged at intervals, wherein the encapsulation parts enclose a first gap located on a side of the isolation structure close to the substrate, wherein the first gap is a closed gap, and an orthographic projection of the first gap on the substrate at least partially overlaps with an orthographic projection of the isolation structure on the substrate;

[0063] A filter layer is formed, wherein the filter layer comprises a plurality of filter units, at least some of which are located in the isolation openings and are arranged on a side of the packaging portion away from the substrate.

[0064] In some embodiments, in the step of forming the light-emitting unit and the first encapsulation layer in the isolation opening, the encapsulation portion includes a first segment, a second segment, and a third segment, the first segment covers the light-emitting unit, the second segment is located on a side wall of the isolation structure facing the isolation opening, and the third segment is located on a side of the isolation structure facing away from the substrate, and a second gap is formed between the third segment and a surface of the side of the isolation structure facing away from the substrate;

[0065] The step of forming the filter layer further includes forming a support structure, wherein the support structure is located in the second gap;

[0066] Preferably, the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the plurality of encapsulation parts include a first encapsulation part for encapsulating the first light-emitting unit, a second encapsulation part for encapsulating the second light-emitting unit and a third encapsulation part for encapsulating the third light-emitting unit, and the step of forming the filter layer includes:

[0067] forming a first light filter material layer on a side of the first packaging layer away from the substrate;

[0068] Performing patterning on the first filter material layer to form a first filter unit, wherein the first filter unit is disposed on a side of the first packaging portion away from the substrate;

[0069] forming a second filter material layer on a side of the first packaging layer away from the substrate;

[0070] Performing patterning on the second filter material layer to form a second filter unit, wherein the second filter unit is disposed on a side of the second packaging portion away from the substrate;

[0071] forming a third filter material layer on a side of the first packaging layer away from the substrate;

[0072] Performing patterning on the third filter material layer to form a third filter unit, wherein the third filter unit is disposed on a side of the third packaging portion away from the substrate;

[0073] Preferably, in the step of patterning the first filter material layer to form the first filter unit, a first support structure is also formed, and the first support structure is located in the second gap between the first packaging portion and the surface of the isolation structure on the side facing away from the substrate;

[0074] In the step of patterning the second filter material layer to form a second filter unit, a second support structure is also formed, and the second support structure is located in a second gap between the second packaging portion and a surface of the isolation structure on a side away from the substrate;

[0075] In the step of patterning the third filter material layer to form a third filter unit, a third support structure is also formed. The third support structure is located in the second gap between the third packaging portion and the surface of the isolation structure facing away from the substrate.

[0076] A fourth aspect of the present application provides a display device, comprising any of the above display panels or a display panel prepared by any of the above preparation methods.

[0077] The embodiment of the present application provides a display panel, a method for preparing a display panel, and a display device. The display panel includes a substrate, an isolation structure, a light-emitting unit, a first encapsulation layer, and a filter layer. The isolation structure is arranged on one side of the substrate and encloses to form an isolation opening. The isolation structure can separate the light-emitting material to form a light-emitting unit, so that the light-emitting unit is at least arranged in the isolation opening without using a mask, which can reduce costs. The first encapsulation layer includes an encapsulation part, through which each light-emitting unit can be individually encapsulated to improve the encapsulation effect. The encapsulation part encloses to form a first gap located on the side of the isolation structure close to the substrate. The orthographic projection of the first gap on the substrate overlaps with the orthographic projection of the isolation structure on the substrate at least partially. The filter layer includes a plurality of filter units, at least some of which are located in the isolation opening and arranged on the side of the encapsulation part away from the substrate, so as to filter stray light through the filter unit to improve the light emission effect of the display panel. In addition, since the first gap is a closed gap, it can be avoided that other materials remain in the first gap and affect the light emission effect of the corresponding light-emitting unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use 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. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0079] Figure 1 A schematic cross-sectional view of a display panel provided in some embodiments of the present application;

[0080] Figure 2 Another cross-sectional schematic diagram of a display panel provided in some embodiments of the present application;

[0081] Figure 3 Another cross-sectional schematic diagram of a display panel provided in some embodiments of the present application;

[0082] Figure 4 A schematic cross-sectional view of a display panel provided in some embodiments of the present application;

[0083] Figure 5 A schematic cross-sectional view of a display panel provided in some other embodiments of the present application;

[0084] Figure 6 A schematic cross-sectional view of a display panel provided in some other embodiments of the present application;

[0085] Figure 7 A schematic cross-sectional view of a display panel provided in some further embodiments of the present application;

[0086] Figure 8 A flow chart of a method for preparing a display panel provided in some embodiments of the present application;

[0087] Fig. 9 Another flow chart of a method for preparing a display panel provided in some embodiments of the present application.

[0088] The figures are as follows:

[0089] Display panel 100; substrate 10; isolation structure 20; isolation opening 21; first isolation portion 22; second isolation portion 23; first surface 231; second surface 232; side surface 233; third isolation portion 24; light emitting unit 30; first light emitting unit 30a; second light emitting unit 30b; third light emitting unit 30c; first electrode 31; light emitting functional layer 32; second electrode 33; first encapsulation layer 40; encapsulation portion 41; first segment 411; second segment 412; first portion 4 121; second part 4122; third part 4123; third segment 413; second gap 414; first gap 415; first packaging part 41a; second packaging part 41b; third packaging part 41c; supporting structure 50; first supporting structure 50a; second supporting structure 50b; third supporting structure 50c; filter layer 60; filter unit 61; first filter unit 61a; second filter unit 61b; third filter unit 61c; second packaging layer 70; third packaging layer 80. DETAILED DESCRIPTION

[0090] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0091] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0092] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0093] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0094] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel, or other types of display panels, such as a micro light emitting diode (Micro Light Emitting Diode, Micro-LED) or a quantum dot light emitting diode (Quantum Light Emitting Diode, QLED) display panel.

[0095] See also Figure 1In a first aspect, the present application provides a display panel 100, comprising a substrate 10, an isolation structure 20, a light-emitting unit 30, a first encapsulation layer 40 and a filter layer 60, wherein the isolation structure 20 is disposed on one side of the substrate 10 and encloses an isolation opening 21; the light-emitting unit 30 is disposed in the isolation opening 21; the first encapsulation layer 40 comprises a plurality of encapsulation portions 41 disposed at intervals, the encapsulation portions 41 enclose a first gap 415 located on a side of the isolation structure 20 close to the substrate 10, the first gap 415 being a closed gap, the orthographic projection of the first gap 415 on the substrate 10 at least partially overlaps with the orthographic projection of the isolation structure 20 on the substrate 10; the filter layer 60 comprises a plurality of filter units 61, at least some of the filter units 61 are located in the isolation opening 21 and are disposed on a side of the encapsulation portion 41 facing away from the substrate 10.

[0096] Specifically, the substrate 10 includes a substrate and a driving circuit layer arranged on the substrate. The substrate can be a hard substrate made of materials such as glass or plastic, or a flexible substrate made of materials such as polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC) or cellulose acetate propionate (CAP). A driving circuit for controlling the light emission of the light emitting unit 30 is arranged in the driving circuit layer. The driving circuit layer is generally composed of inorganic film layers such as a metal layer, a semiconductor layer (active layer), and an insulating layer. By patterning these inorganic film layers, a driving circuit for controlling the light emission of the light emitting unit 30 can be formed. There are many implementation methods for its specific circuit structure, which will not be repeated here.

[0097] The isolation structure 20 is disposed on one side of the substrate 10, and the isolation opening 21 is enclosed therein. The light-emitting material can be separated by the isolation structure 20 to form a light-emitting unit 30, so that the light-emitting unit 30 is located in the isolation opening 21, and no mask is required to prepare the light-emitting unit 30, which can save costs. The number of light-emitting units 30 and the isolation opening 21 can be multiple, and the multiple light-emitting units 30 are arranged one-to-one in the multiple isolation openings 21 to separate the multiple light-emitting units 30 by the isolation structure 20. The first encapsulation layer 40 is used to encapsulate the light-emitting unit 30. The first encapsulation layer 40 includes an encapsulation part 41. The number of the encapsulation parts 41 can be set in a one-to-one correspondence with the number of the light-emitting units 30. The encapsulation part 41 can be used to independently encapsulate each light-emitting unit 30 to prevent the impurities from moving along the first encapsulation layer 40 when one of the light-emitting units 30 is invaded by water and oxygen, thereby affecting the yield of other light-emitting units 30, thereby improving the encapsulation effect.

[0098] The number of the filter units 61 corresponds to the number of the light emitting units 30 and the isolation openings 21. When there are multiple filter units 61, the multiple filter units 61 are arranged one-to-one in the multiple isolation openings 21. The light emitting units 30, the packaging part 41 and the filter units 61 in the same isolation opening 21 are stacked in sequence in a direction away from the substrate 10. The filter units 61 can be used to filter stray light and improve the light emission effect of the light emitting units 30 located in the same isolation opening 21. The filter unit 61 is arranged on the side of the packaging part 41 away from the substrate 10, and the orthographic projection of the filter unit 61 on the substrate 10 is located within the orthographic projection of the packaging part 41 on the substrate 10, so that the packaging part 41 can extend out of the filter unit 61 and contact with other subsequent packaging materials, and package the filter unit 61 together with the other packaging materials.

[0099] The packaging portion 41 encloses a first gap 415 located on the side of the isolation structure 20 close to the substrate 10, and the orthographic projection of the first gap 415 on the substrate 10 at least partially overlaps with the orthographic projection of the isolation structure 20 on the substrate 10. It can be understood that the multiple light-emitting units 30 may include a red light-emitting unit 30, a green light-emitting unit 30, and a blue light-emitting unit 30, and accordingly, the multiple filter units 61 may include a red filter unit 61, a green filter unit 61, and a blue filter unit 61. During the preparation of the filter layer 60, filter units 61 of various colors may be prepared in sequence on the side of each packaging portion 41 away from the substrate 10. For example, in the case where the green filter unit 61 is prepared before the red filter unit 61, a green filter material may be formed on the side of the first packaging layer 40 away from the substrate 10, and then the green filter material corresponding to the red light-emitting unit 30 and the blue light-emitting unit 30 is removed by etching, and the green filter material corresponding to the green light-emitting unit 30 is retained to form the green filter unit 61. Then, a red filter material may be formed on the side of the first packaging layer 40 away from the substrate 10, and then the red filter material corresponding to the green light-emitting unit 30 and the blue light-emitting unit 30 is removed by etching, and the red filter material corresponding to the red light-emitting unit 30 is retained to form the red filter unit 61. The blue filter unit 61 is formed in the same manner.

[0100] In the related art, the first gap 415 of the packaging part 41 is a non-closed gap. When a green filter material is formed on the side of the first packaging layer 40 facing away from the substrate 10, the green filter material will fall into the first gap 415 of the packaging part 41 corresponding to the red light-emitting unit 30 and the blue light-emitting unit 30, so that when the green filter material corresponding to the red light-emitting unit 30 and the blue light-emitting unit 30 is subsequently etched and removed, the green filter material corresponding to the red light-emitting unit 30 and the blue light-emitting unit 30 may remain in the first gap 415 of the corresponding packaging part 41, thereby affecting the light emission effect of the red light-emitting unit 30 and the blue light-emitting unit 30.

[0101] Therefore, in the embodiment of the present application, the first gap 415 is set as a closed gap, which can prevent the material of the previously formed filter unit 61 from remaining in the first gap 415 of the packaging part 41 corresponding to the subsequently formed filter unit 61, thereby preventing the light emitting effect of the light-emitting unit 30 corresponding to the subsequently formed filter unit 61 from being affected by the residual material, thereby improving the performance of the display panel 100.

[0102] Please continue reading Figure 1 In some embodiments, the packaging portion 41 includes a first segment 411, a second segment 412 and a third segment 413, the first segment 411 covers the light-emitting unit 30, the second segment 412 is located on a side wall of the isolation structure 20 facing the isolation opening 21, and the third segment 413 is located on a side of the isolation structure 20 facing away from the substrate 10, and forms a second gap 414 between the third segment 413 and the side surface of the isolation structure 20 facing away from the substrate 10; the display panel also includes a supporting structure 50, and the supporting structure 50 is arranged in the second gap 414.

[0103] The first segment 411, the second segment 412 and the third segment 413 are connected in sequence. The first segment 411 covers the light-emitting unit 30 and is located on the side of the light-emitting unit 30 facing away from the substrate 10 to encapsulate the light-emitting unit 30. The second segment 412 extends from the edge of the first segment 411 to the side of the isolation structure 20 facing the isolation opening 21, that is, the second segment 412 covers the side wall of the isolation structure 20 facing the isolation opening 21, which can improve the stability and reliability of the encapsulation part 41 and improve the encapsulation effect of the corresponding light-emitting unit 30. The third segment 413 extends from the edge of the second segment 412 away from the first segment 411 to the side of the isolation structure 20 facing away from the substrate 10, thereby further improving the stability and reliability of the encapsulation part 41.

[0104] It is understandable that when the third segment 413 is located on the side of the isolation structure 20 facing away from the substrate 10, a second gap 414 is formed between the third segment 413 and the surface of the isolation structure 20 facing away from the substrate 10. In the subsequent process or use, the third segment 413 is likely to deform or collapse into the second gap 414, thereby affecting the packaging effect of the packaging part 41. Therefore, in the embodiment of the present application, by providing a support structure 50 in the second gap 414 between the third segment 413 and the surface of the side of the isolation structure 20 facing away from the substrate 10, the support structure 50 supports the third segment 413 in the second gap 414, thereby reducing the risk of deformation or even collapse of the third segment 413, improving the sealing effect of the first packaging layer 40, and thereby improving the performance of the display panel 100.

[0105] Optionally, the isolation structure 20 is disposed around the circumference of the isolation opening 21, and the second segment 412 is disposed around the circumference edge of the first segment 411, so that the second segment 412 can cover the side wall of the isolation structure 20 facing the isolation opening 21, so as to further improve the stability and reliability of the packaging part 41. Optionally, the third segment 413 is disposed around the circumference of the isolation opening 21, so as to further improve the stability and reliability of the packaging part 41. Optionally, when the third segment 413 is disposed around the circumference of the isolation opening 21, the second gap 414 between the third segment 413 and the surface of the isolation structure 20 on the side facing away from the substrate 10 is disposed around the circumference of the isolation opening 21, so that the support structure 50 can be disposed around the circumference of the isolation opening 21, so as to support the third segment 413 along the circumference of the isolation opening 21 by the support structure 50, thereby improving the support effect.

[0106] Preferably, at least part of the supporting structure 50 and the filter unit 61 are provided with the same layer and the same material. Therefore, at least part of the supporting structure 50 and the filter unit 61 can be prepared and formed in the same process step without adding an additional process for preparing the supporting structure 50 or the filter unit 61, which can simplify the preparation process of the display panel 100 and reduce the preparation difficulty and cost.

[0107] When preparing the filter unit 61 on the side of the packaging part 41 facing away from the substrate 10, part of the filter material can be controlled to fall into the isolation opening 21, and part of the filter material is filled into the second gap 414 between the third segment 413 and the surface of the isolation structure 20 facing away from the substrate 10. The filter material is then patterned to form the filter unit 61 and the support structure 50.

[0108] See also Figure 2 In some embodiments, the plurality of light-emitting units 30 include a first light-emitting unit 30a, a second light-emitting unit 30b, and a third light-emitting unit 30c, and the plurality of encapsulation parts 41 include a first encapsulation part 41a, a second encapsulation part 41b, and a third encapsulation part 41c. The first encapsulation part 41a is used to encapsulate the first light-emitting unit 30a, the second encapsulation part 41b is used to encapsulate the second light-emitting unit 30b, and the third encapsulation part 41c is used to encapsulate the third light-emitting unit 30c.

[0109] Specifically, the first encapsulation portion 41a is located on the side of the first light-emitting unit 30a away from the substrate 10, and is used to encapsulate the first light-emitting unit 30a, the second encapsulation portion 41b is located on the side of the second light-emitting unit 30b away from the substrate 10, and is used to encapsulate the second light-emitting unit 30b, and the third encapsulation portion 41c is located on the side of the third light-emitting unit 30c away from the substrate 10, and is used to encapsulate the third light-emitting unit 30c, so that each light-emitting unit 30 is individually encapsulated by each encapsulation portion 41, thereby improving the encapsulation effect. Optionally, the isolation opening 21 includes a first isolation opening 21 for accommodating the first light-emitting unit 30a, a second isolation opening 21 for accommodating the second light-emitting unit 30b, and a third isolation opening 21 for accommodating the third light-emitting unit 30c.

[0110] Optionally, the number of the first light-emitting unit 30a, the second light-emitting unit 30b and the third light-emitting unit 30c can be multiple. Multiple first light-emitting units 30a can be prepared and formed in the same process step, multiple second light-emitting units 30b can be prepared and formed in the same process step, and multiple third light-emitting units 30c can be prepared and formed in the same process step. Optionally, multiple first light-emitting units 30a can be prepared first, then multiple second light-emitting units 30b can be prepared, and finally multiple third light-emitting units 30c can be prepared. In other embodiments, the first light-emitting unit 30a, the second light-emitting unit 30b and the third light-emitting unit 30c can also be prepared in other orders.

[0111] Correspondingly, the number of the first packaging part 41a, the second packaging part 41b and the third packaging part 41c can also be multiple, and the multiple first packaging parts 41a can be prepared and formed in the same process step, and the multiple first packaging parts 41a can be prepared after the multiple first light-emitting units 30a are prepared and formed. The multiple second packaging parts 41b can be prepared and formed in the same process step, and the multiple second packaging parts 41b can be prepared after the multiple second light-emitting units 30b are prepared and formed. The multiple third packaging parts 41c can be prepared and formed in the same process step, and the multiple third packaging parts 41c can be prepared after the multiple third light-emitting units 30c are prepared and formed.

[0112] Please continue reading Figure 2Preferably, the plurality of filter units 61 include a first filter unit 61a, a second filter unit 61b and a third filter unit 61c, the first filter unit 61a is arranged on a side of the first packaging portion 41a away from the substrate 10, the second filter unit 61b is arranged on a side of the second packaging portion 41b away from the substrate 10, and the third filter unit 61c is arranged on a side of the third packaging portion 41c away from the substrate 10, so as to filter stray light respectively through the first filter unit 61a, the second filter unit 61b and the third filter unit 61c, thereby improving the light emission effect of the first light-emitting unit 30a, the second light-emitting unit 30b and the third light-emitting unit 30c.

[0113] Optionally, the number of the first filter unit 61a, the second filter unit 61b and the third filter unit 61c can be multiple, and the multiple first filter units 61a can be prepared and formed in the same process step, the multiple second filter units 61b can be prepared and formed in the same process step, and the multiple third filter units 61c can be prepared and formed in the same process step. Optionally, the multiple first filter units 61a can be prepared after the multiple first packaging parts 41a are prepared and formed, the multiple second filter units 61b can be prepared after the multiple second packaging parts 41b are prepared and formed, and the multiple third filter units 61c can be prepared after the multiple third packaging parts 41c are prepared and formed. Alternatively, after the first packaging part 41a, the second packaging part 41b and the third packaging part 41c are all prepared and formed, a plurality of first filter units 61a, a plurality of second filter units 61b and a plurality of third filter units 61c may be prepared in sequence, that is, after the first packaging part 41a, the second packaging part 41b and the third packaging part 41c are all prepared and formed, a plurality of first filter units 61a are prepared first, then a plurality of second filter units 61b are prepared, and finally a plurality of third filter units 61c are prepared. Of course, in other embodiments, the first filter unit 61a, the second filter unit 61b and the third filter unit 61c may also be prepared in other orders.

[0114] Preferably, any two of the first light emitting unit 30 a , the second light emitting unit 30 b and the third light emitting unit 30 c have different colors, so as to achieve color display of the display panel 100 .

[0115] Please continue reading Figure 2Preferably, the multiple supporting structures 50 include a first supporting structure 50a, a second supporting structure 50b and a third supporting structure 50c, the first supporting structure 50a is located in the second gap 414 between the third segment 413 of the first packaging part 41a and the side surface of the isolation structure 20 facing away from the substrate 10, the second supporting structure 50b is located in the second gap 414 between the third segment 413 of the second packaging part 41b and the side surface of the isolation structure 20 facing away from the substrate 10, and the third supporting structure 50c is located in the second gap 414 between the third segment 413 of the third packaging part 41c and the side surface of the isolation structure 20 facing away from the substrate 10, so that the third segment 413 of the first packaging part 41a is supported by the first supporting structure 50a, the third segment 413 of the second packaging part 41b is supported by the second supporting structure 50b, and the third segment 413 of the third packaging part 41c is supported by the third supporting structure 50c.

[0116] Optionally, the number of the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c can be multiple respectively, wherein the number of the first supporting structures 50a corresponds to the number of the first packaging parts 41a, the number of the second supporting structures 50b corresponds to the number of the second packaging parts 41b, and the number of the third supporting structures 50c corresponds to the number of the third packaging parts 41c.

[0117] Preferably, the first packaging portion 41a is located on the side of the isolation structure 20 away from the substrate 10, and forms a first sub-gap 414a with the side surface of the isolation structure 20 away from the substrate 10, the second packaging portion 41b is located on the side of the isolation structure 20 away from the substrate 10, and forms a second sub-gap 414b with the side surface of the isolation structure 20 away from the substrate 10, and the third packaging portion 41c is located on the side of the isolation structure 20 away from the substrate 10, and forms a third sub-gap 414c with the side surface of the isolation structure 20 away from the substrate 10; wherein, the first packaging portion 41a is located on the side of the isolation structure 20 away from the substrate 10, and forms a first sub-gap 414a with the side surface of the isolation structure 20 away from the substrate 10; In the direction of the surface, the height of the first sub-gap 414a, the height of the second sub-gap 414b and the height of the third sub-gap 414c are different from each other, so that the first supporting structure 50a located in the first sub-gap 414a, the second supporting structure 50b located in the second sub-gap 414b and the third supporting structure 50c located in the third sub-gap 414c have different thicknesses along the direction perpendicular to the plane where the substrate 10 is located, so that the supporting structure 50 can be flexibly adjusted according to the structural characteristics of each packaging part 41 to ensure the supporting effect of the supporting structure 50 on the corresponding packaging part 41.

[0118] Preferably, the materials of any two of the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c are different, so that by reasonably setting the materials of the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c, the preparation of the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c is facilitated, while ensuring the supporting effect of the materials of the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c on the corresponding third segment 413.

[0119] It should be noted that the materials of any two of the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c are different. The materials of any two of the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c are completely different, or the materials of any two of the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c are partially the same and partially different.

[0120] Preferably, at least part of the first supporting structure 50a is made of the same material as the first filter unit 61a, at least part of the second supporting structure 50b is made of the same material as the second filter unit 61b, and at least part of the third supporting structure 50c is made of the same material as the third filter unit 61c.

[0121] If the material of at least part of the first supporting structure 50a is the same as that of the first filtering unit 61a, then at least part of the first supporting structure 50a can be prepared and formed in the same process step as the first filtering unit 61a; if the material of at least part of the second supporting structure 50b is the same as that of the second filtering unit 61b, then at least part of the second supporting structure 50b can be prepared and formed in the same process step as the second filtering unit 61b; if the material of at least part of the third supporting structure 50c is the same as that of the third filtering unit 61c, then at least part of the third supporting structure 50c can be prepared and formed in the same process step as the third filtering unit 61c, thereby eliminating the need for additional processes for preparing the supporting structure 50 or the filtering unit 61, thereby simplifying the preparation process of the display panel 100 and reducing the preparation difficulty and cost.

[0122] In some embodiments, along a direction perpendicular to the plane where the substrate 10 is located, the side of the first filter unit 61a away from the substrate 10 has a first distance to the surface of the substrate 10, the side of the second filter unit 61b away from the substrate 10 has a second distance to the surface of the substrate 10, and the side of the third filter unit 61c away from the substrate 10 has a third distance to the surface of the substrate 10. The first distance, the second distance and the third distance are the same, so as to facilitate the subsequent preparation of other film layers on the surface of the filter layer 60 facing away from the substrate 10.

[0123] It can be understood that, when the first distance, the second distance and the third distance are set to be the same, the side of the first filter unit 61a facing away from the substrate 10, the side of the second filter unit 61b facing away from the substrate 10 and the side of the third filter unit 61c facing away from the substrate 10 are at the same height. Therefore, when the second encapsulation layer is prepared subsequently, it is beneficial to the leveling of the material of the second encapsulation layer, thereby improving the encapsulation performance.

[0124] Preferably, the emission wavelength of the first light emitting unit 30a is greater than that of the second light emitting unit 30b, and the wavelength of the second light emitting unit 30b is greater than that of the third light emitting unit 30c, so as to adjust the color of the display panel 100 and improve the display effect.

[0125] Preferably, along the direction perpendicular to the plane where the substrate 10 is located, the first distance, the second distance and the third distance are the maximum distances from the side of the filter unit 61 away from the substrate 10 to the substrate 10, or are the average distances from the side of the filter unit 61 away from the substrate 10 to the substrate 10, or are the distances between the filter unit 61 and the substrate 10 passing through the center of the light-emitting unit 30 along the direction perpendicular to the plane where the substrate 10 is located.

[0126] It should be noted that the first distance, the second distance and the third distance are the same distance. For example, when the first distance is located at the maximum distance from the side of the first filter unit 61a away from the substrate 10 to the substrate 10, the second distance is the maximum distance from the side of the second filter unit 61b away from the substrate 10 to the substrate 10, and the third distance is the maximum distance from the side of the third filter unit 61c away from the substrate 10 to the substrate 10.

[0127] In some embodiments, the thickness of the first light emitting unit 30a is greater than that of the second light emitting unit 30b, and the thickness of the second light emitting unit 30b is greater than or equal to that of the third light emitting unit 30c, so as to adapt to the wavelength setting of each light emitting unit 30 and improve the display effect.

[0128] Preferably, along the direction perpendicular to the substrate 10, the thickness of the first filter unit 61a is less than the thickness of the second filter unit 61b, and the thickness of the second filter unit 61b is less than or equal to the thickness of the third filter unit 61c, so that the first distance corresponding to the first filter unit 61a, the second distance corresponding to the second filter unit 61b, and the third distance corresponding to the third filter unit 61c are the same.

[0129] Preferably, the thickness of the filter unit 61 is the thickness of the filter unit 61 along a direction perpendicular to the substrate 10 and passing through the center line of the light-emitting unit 30 located on the side of the filter unit 61 close to the substrate 10, so that the filtering effect of the filter unit 61 on the corresponding light-emitting unit 30 is improved by adjusting the thickness of each filter unit 61.

[0130] See also Figure 3 In some embodiments, the light emitting unit 30 includes a first electrode 31 , a light emitting functional layer 32 and a second electrode 33 , and the first electrode 31 , the light emitting functional layer 32 and the second electrode 33 are stacked in a direction away from the substrate 10 .

[0131] The first electrode 31 is located on the side of the light-emitting functional layer 32 facing the substrate 10, and the second electrode 33 is located on the side of the light-emitting functional layer 32 facing away from the substrate 10. Optionally, the first electrode 31 and the second electrode 33 can be used as pixel electrodes of the display panel 100, and one of the first electrode 31 and the second electrode 33 can be used as an anode and the other can be used as a cathode to drive the light-emitting unit 30 to emit light. In the embodiment of the present application, the first electrode 31 is used as the anode of the display panel 100, and the second electrode 33 is used as the cathode of the display panel 100 for illustration.

[0132] Optionally, the light-emitting functional layer 32 may include a hole injection layer (HIL), a hole transport layer (HTL), a light-emitting layer, an electron injection layer (EIL) and an electron transport layer (ETL).

[0133] Preferably, part of the support structure 50 and the second electrode 33 are provided in the same layer and with the same material.

[0134] It can be understood that during the preparation process of the second electrode 33, a second electrode material layer can be first formed on the side of the isolation structure 20 facing away from the substrate 10. The second electrode material layer is usually arranged as a whole layer. Under the isolation effect of the isolation structure 20, part of the second electrode material layer falls into the isolation opening 21, and part of the second electrode material layer is located on the side of the isolation structure 20 facing away from the substrate 10. At this time, the second electrode material layer located on the side of the isolation structure 20 facing away from the substrate 10 can form a part of the support structure 50, thereby facilitating the preparation of the support structure 50 and reducing the difficulty of preparing the support structure 50.

[0135] Optionally, when part of the second electrode material layer falls into the isolation opening 21 and part of the second electrode material layer is located on the side of the isolation structure 20 facing away from the substrate 10, part of the second electrode material layer located on the side of the isolation structure 20 facing away from the substrate 10 can also be etched away, and part of the second electrode material layer at the second gap 414 between the corresponding third segment 413 and the surface of the isolation structure 20 facing away from the substrate 10 is retained to form a partial support structure 50, so as to reduce the influence of the second electrode material layer located on the side of the isolation structure 20 facing away from the substrate 10 on the performance of the display panel 100.

[0136] Preferably, the second electrode 33 is electrically connected to the isolation structure 20 , so the second electrode 33 of each light emitting unit 30 can be conducted through the isolation structure 20 to form a whole-surface electrode, so as to control the light emitting unit 30 to emit light.

[0137] See also Figure 4 In some embodiments, the side of the first segment 411 facing away from the substrate 10 is connected to the side of the second segment 412 facing the isolation opening 21 to form a first gap 415, so that the first gap 415 is a closed gap, thereby preventing other materials from remaining in the gap in the subsequent process and affecting the light emitting effect of the light emitting unit 30. In addition, the side of the first segment 411 facing away from the substrate 10 is connected to the side of the second segment 412 facing the isolation opening 21, and the first segment 411 can also play a good supporting role for the second segment 412, so that the second segment 412 is not easy to separate from the isolation structure 20, thereby being able to better improve the packaging effect of the packaging part 41 on the light emitting unit 30.

[0138] It should be noted that, after the first packaging part 41a, the second packaging part 41b and the third packaging part 41c are all prepared and formed, the first filter unit 61a, the second filter unit 61b and the third filter unit 61c are prepared in sequence, and the side of the first segment 411 facing away from the substrate 10 is connected to the side of the second segment 412 facing the isolation opening 21 to form a first gap 415, which can avoid the material of the previously formed filter unit 61 from remaining in the first gap 415 of other packaging parts 41 and affecting the light emission effect of the corresponding light-emitting unit 30. For example, it can avoid the material of the first filter unit 61a from remaining in the first gap 415 of the second packaging part 41b and the third packaging part 41c and affecting the light emission effect of the second light-emitting unit 30b and the third light-emitting unit 30c. It can also avoid the material of the second filter unit 61b from remaining in the first gap 415 of the third packaging part 41c and affecting the light emission effect of the third light-emitting unit 30c.

[0139] Preferably, the first encapsulation layer 40 includes an inorganic material. Exemplarily, the first encapsulation layer 40 may be made of materials such as silicon oxide, silicon nitride or silicon oxynitride, which can provide good mechanical support and encapsulation protection to prevent the display panel 100 from being affected by the environment, and can further isolate harmful substances such as moisture and oxygen from the outside from entering the interior of the display panel 100, thereby improving the service life and stability of the display panel 100.

[0140] Please continue reading Figure 4In some embodiments, the isolation structure 20 includes a first isolation portion 22 and a second isolation portion 23 arranged on the side of the first isolation portion 22 away from the substrate 10, and the orthographic projection of the first isolation portion 22 on the substrate 10 is located within the orthographic projection of the second isolation portion 23 on the substrate 10. The second isolation portion 23 can protrude relative to the first isolation portion 22 in a direction close to the isolation opening 21. Therefore, the light-emitting material can be separated by the second isolation portion 23 to form a light-emitting unit 30, so that the light-emitting unit 30 is located in the isolation opening 21, and no mask is required to prepare the light-emitting unit 30, which can save costs.

[0141] Please continue reading Figure 4 Preferably, the second isolation portion 23 includes a first surface 231 facing the substrate 10, a second surface 232 facing away from the substrate 10, and a side surface 233 connecting the first surface 231 and the second surface 232232, and the second segment 412 includes a first portion 4121, a second portion 4122 and a third portion 4123 connected in sequence, the first portion 4121 is located on a side of the first isolation portion 22 facing the isolation opening 21, the second portion 4122 is located on a portion of the first surface 231, the third portion 4123 is located on the side surface 233, and the third portion 4123 is connected to the side of the first segment 411 facing away from the substrate 10 to form a first gap 415.

[0142] The first portion 4121 is connected to the first segment 411 at a side away from the second portion 4122, and the third portion 4123 is connected to the third segment 413 at a side away from the second portion 4122. The second portion 4122 is located on a portion of the first surface 231, and specifically covers a portion of the first surface 231 protruding from the first isolation portion 22. Since the second isolation portion 23 protrudes from the first isolation portion 22 in a direction close to the isolation opening 21, the third portion 4123 of the second segment 412 located on the side surface 233 can be easily connected to the side of the first segment 411 away from the substrate 10 to form the first gap 415.

[0143] Please continue reading Figure 4 Preferably, the display panel 100 also includes a pixel definition layer 90, the pixel definition layer 90 includes a pixel defining portion 91 and a pixel opening 92 formed by the pixel defining portion 91, the pixel defining portion 91 is located between the substrate 10 and the isolation structure 20, and the pixel opening 92 is connected to the corresponding isolation opening 21, which can increase the height difference of the isolation opening 21, so that the isolation structure 20 can better separate the light-emitting material into each light-emitting unit 30.

[0144] Preferably, the first segment 411 includes a fourth part and a fifth part arranged on the side of the fourth part close to the isolation structure 20, the orthographic projection of the fourth part on the substrate 10 is located within the orthographic projection of the pixel opening 92 on the substrate 10, the orthographic projection of the fifth part on the substrate 10 is located within the orthographic projection of the pixel defining portion 91 on the substrate 10, and the fifth part is connected to the third part 4123 of the second segment 412 to form a first gap 415.

[0145] The fifth portion is located on a side of the fourth portion close to the isolation structure 20, and can extend from the edge of the fourth portion to the sidewall close to the isolation structure 20 toward the isolation opening 21 to connect the fourth portion and the first portion 4121 of the second segment 412. The fifth portion is located on a side of the pixel defining portion 91 away from the substrate 10, so it can be supported by the pixel defining portion 91 and protrude in a direction away from the substrate 10, so as to facilitate connection with the third portion 4123 of the second segment 412 to form the first gap 415.

[0146] Preferably, the orthographic projection of the second surface 232 on the substrate 10 is located within the orthographic projection of the first surface 231 on the substrate 10. Therefore, the second surface 232 can protrude toward the isolation opening 21 relative to the first surface 231, so that the partial third portion 4123 close to the second surface 232 can be easily connected to the first segment 411.

[0147] Please continue reading Figure 4 Preferably, the isolation structure 20 also includes a third isolation portion 24, which is arranged on the side of the first isolation portion 22 facing the substrate 10 to increase the height of the isolation structure 20, which is equivalent to making the isolation opening 21 have a larger height difference. When preparing the light-emitting unit 30, due to the larger height difference at the isolation opening 21, the light-emitting material is easier to disconnect at the isolation structure 20, thereby reducing the difficulty of preparing the light-emitting unit 30.

[0148] Please continue reading Figure 4 In some embodiments, the display panel 100 further includes a second encapsulation layer 70, which covers the side of the filter unit 61 away from the substrate 10, and covers the first encapsulation layer 40 and part of the isolation structure 20 to further prevent external moisture, oxygen, etc. from entering the display panel 100.

[0149] Preferably, the material of the second encapsulation layer 70 includes an organic material. The second encapsulation layer 70 may be made of an organic material such as a polymer. The thickness of the second encapsulation layer 70 may be greater than the thickness of the first encapsulation layer 40, and the second encapsulation layer 70 has stronger flexibility, so it can better adapt to the bending and curvature of the display panel 100. In addition, the organic material can also play a role in buffering external forces. Optionally, the second encapsulation layer 70 can be prepared by an inkjet printing process, which is conducive to improving production efficiency and reducing production costs.

[0150] Preferably, the display panel 100 further includes a third encapsulation layer 80 , and the third encapsulation layer 80 is disposed on a side of the second encapsulation layer 70 away from the substrate 10 , so as to further improve the encapsulation effect.

[0151] Preferably, the material of the third encapsulation layer 80 includes inorganic material, so as to provide good mechanical support and encapsulation protection to prevent the display panel 100 from being affected by the environment, and further isolate harmful substances such as moisture and oxygen from entering the interior of the display panel 100 .

[0152] See also Figure 5 In some embodiments, the display panel 100 further includes a light shielding layer 200, which includes a light shielding unit 210. The light shielding unit 210 is located on the side of the isolation structure 20 away from the substrate 10. On the one hand, the light shielding unit 210 can fill the gap between two adjacent packaging parts 41 to improve the flatness of the film structure. On the other hand, when the isolation structure 20 is made of metal material and has a large reflectivity, the light shielding unit 210 can block part of the isolation structure 20, reduce the reflectivity of the area where the isolation structure 20 is located, and improve the display effect of the display panel 100 in the off state. In addition, the light shielding unit 210 can also improve the light crosstalk problem between two adjacent light-emitting units 30.

[0153] Preferably, the shading unit 210 is located between two adjacent filtering units 61, and the orthographic projection of the shading unit 210 on the substrate 10 partially overlaps with the orthographic projection of the adjacent filtering unit 61 on the substrate 10, which can increase the shading area of ​​the shading unit 210, improve the shading effect of the shading unit 210 on the different colors of light emitted by the two adjacent light-emitting units 30, and further prevent crosstalk between different colors of light.

[0154] Preferably, the orthographic projection of the shading unit 210 on the substrate 10 is located within the orthographic projection of the isolation structure 20 on the substrate 10, which can prevent the shading unit 210 from extending out of the isolation structure 20 in a direction parallel to the substrate 10 and affecting the performance of other film layers.

[0155] Preferably, the side wall of the filter unit 61 close to the isolation structure 20 is an inclined surface or a curved surface, so that the filter unit 61 can change the propagation path of the light emitted by the corresponding light emitting unit 30 to improve the light emission effect.

[0156] Preferably, the distance from the side surface of the shading unit 210 facing away from the substrate 10 to the surface of the substrate 10 is greater than or equal to the distance from the side surface of the filtering unit 61 facing away from the surface of the substrate 10 to the substrate 10, thereby improving the shading effect of the shading unit 210 on the light at the two adjacent filtering units 61, and further preventing the mutual crosstalk between the different colors of light emitted by the two adjacent light-emitting units 30.

[0157] See also Figure 6 In some other embodiments, two adjacent filter units 61 partially overlap along a direction perpendicular to the plane where the substrate 10 is located.

[0158] The parts of two adjacent filter units 61 that are close to each other can overlap each other in a direction perpendicular to the plane where the substrate 10 is located. It can be understood that the filter unit 61 filters stray light, which means that the filter unit 61 can allow the light of a specific color emitted by the corresponding light-emitting unit 30 to pass through, while blocking the light of other colors. Taking the red filter unit 61 as an example, the red filter unit 61 is arranged corresponding to the red light-emitting unit 30, and can allow the red light emitted by the red light-emitting unit 30 to pass through, while blocking the green light and the blue light.

[0159] In these embodiments, two adjacent filter units 61 are arranged to partially overlap in a direction perpendicular to the plane where the substrate 10 is located. Therefore, the overlapping portion of the filter unit 61 can block other color lights emitted by the light-emitting unit 30 corresponding to another adjacent filter unit 61, and prevent the other color lights from crosstalking with the light emitted by the light-emitting unit 30 corresponding to the filter unit 61, thereby improving the display effect.

[0160] Taking the adjacent arrangement of the red filter unit 61 and the green filter unit 61 as an example, the red filter unit 61 partially overlaps with the green filter unit 61, wherein the red filter unit 61 corresponds to the red light-emitting unit 30, and the green filter unit 61 corresponds to the green light-emitting unit 30. Therefore, the overlapping portion of the red filter unit 61 can block the green light emitted by the green light-emitting unit 30 from propagating toward the red light, thereby reducing the crosstalk between the red light and the green light.

[0161] Preferably, the orthographic projection of the overlapping area of ​​two adjacent filter units 61 on the substrate 10 is located within the orthographic projection of the isolation structure 20 on the substrate 10, so that the filter unit 61 passing through the overlapping area can block the light emitted by the light-emitting unit 30 corresponding to another adjacent filter unit 61.

[0162] See also Figure 7According to a second aspect of the present application, there is provided a display panel 100, comprising a substrate 10, an isolation structure 20, a light-emitting unit 30, a first encapsulation layer 40, a filter layer 60 and a support structure 50, wherein the isolation structure 20 is disposed on one side of the substrate 10 and encloses an isolation opening 21; the light-emitting unit 30 is disposed in the isolation opening 21; the first encapsulation layer 40 comprises an encapsulation portion 41, wherein the encapsulation portion 41 is at least partially located on a side of the light-emitting unit 30 facing away from the substrate 10, and part of the encapsulation portion 41 is also located on a side of the isolation structure 20 facing the isolation opening 21, and a second gap 414 is formed between the surface of the side of the isolation structure 20 facing away from the substrate 10; the filter layer 60 comprises a filter unit 61, wherein the filter unit 61 is located in the isolation opening 21 and is disposed on a side of the encapsulation portion 41 facing away from the substrate 10; the support structure 50 is disposed in the second gap 414.

[0163] In these embodiments, the isolation structure 20 is disposed on one side of the substrate 10 and encloses the isolation opening 21. The isolation structure 20 can separate the light-emitting material to form the light-emitting unit 30, so that the light-emitting unit 30 is at least disposed in the isolation opening 21 without using a mask, which can reduce costs. The first encapsulation layer 40 includes an encapsulation portion 41, and the encapsulation portion 41 is at least partially located on the side of the light-emitting unit 30 away from the substrate 10, so that each light-emitting unit 30 can be individually encapsulated by the encapsulation portion 41, which can improve the encapsulation effect. In addition, part of the encapsulation portion 41 also extends to the side of the isolation structure 20 away from the substrate 10, which can extend the invasion path of impurities such as water vapor and further improve the encapsulation effect. A second gap 414 is formed between the part of the encapsulation portion 41 extending to the side of the isolation structure 20 away from the substrate 10 and the side surface of the isolation structure 20 away from the substrate 10. The support structure 50 is disposed in the second gap 414, so that the part of the encapsulation portion 41 can be supported by the support structure 50, reducing the risk of deformation or even collapse of the encapsulation portion 41, improving its sealing effect, and thus improving the performance of the display panel 100. In addition, a filter layer 60 is also provided in the display panel 100. The filter layer 60 includes a filter unit 61. The filter unit 61 is located in the isolation opening 21 and is arranged on the side of the packaging part 41 away from the substrate 10, so that stray light can be filtered through the filter layer 60 to improve the light output effect of the light-emitting unit 30.

[0164] In some embodiments, at least a portion of the supporting structure 50 and the filter unit 61 are provided with the same layer and the same material. Therefore, at least a portion of the supporting structure 50 and the filter unit 61 can be prepared and formed in the same process step without the need for additional processes for preparing the supporting structure 50 or the filter unit 61. This can simplify the preparation process of the display panel 100 and reduce the preparation difficulty and cost.

[0165] Please continue reading Figure 2Optionally, the plurality of light-emitting units 30 may include a first light-emitting unit 30a, a second light-emitting unit 30b, and a third light-emitting unit 30c, and the plurality of encapsulation parts 41 include a first encapsulation part 41a for encapsulating the first light-emitting unit 30a, a second encapsulation part 41b for encapsulating the second light-emitting unit 30b, and a third encapsulation part 41c for encapsulating the third light-emitting unit 30c, so that each light-emitting unit 30 is individually encapsulated by each encapsulation part 41, thereby improving the encapsulation effect. Optionally, the isolation opening 21 includes a first isolation opening 21 for accommodating the first light-emitting unit 30a, a second isolation opening 21 for accommodating the second light-emitting unit 30b, and a third isolation opening 21 for accommodating the third light-emitting unit 30c.

[0166] Please continue reading Figure 2 Optionally, the plurality of filter units 61 may include a first filter unit 61a, a second filter unit 61b and a third filter unit 61c, the first filter unit 61a being arranged on a side of the first packaging portion 41a away from the substrate 10, the second filter unit 61b being arranged on a side of the second packaging portion 41b away from the substrate 10, and the third filter unit 61c being arranged on a side of the third packaging portion 41c away from the substrate 10, so as to filter stray light respectively through the first filter unit 61a, the second filter unit 61b and the third filter unit 61c, thereby improving the light emission effect of the first light-emitting unit 30a, the second light-emitting unit 30b and the third light-emitting unit 30c.

[0167] Optionally, the filter layer 60 can be prepared after the first encapsulation part 41a, the second encapsulation part 41b and the third encapsulation part 41c are all prepared and formed. For example, after the first encapsulation part 41a, the second encapsulation part 41b and the third encapsulation part 41c are all prepared and formed, first prepare a plurality of first filter units 61a, then prepare a plurality of second filter units 61b, and finally prepare a plurality of third filter units 61c. Of course, in other embodiments, the first filter unit 61a, the second filter unit 61b and the third filter unit 61c can also be prepared in other orders.

[0168] It can be understood that, after the first packaging part 41a, the second packaging part 41b and the third packaging part 41c are all prepared and formed, the first filter unit 61a, the second filter unit 61b and the third filter unit 61c are prepared in sequence, and the side of the first segment 411 facing away from the substrate 10 is connected with the side of the second segment 412 facing the isolation opening 21 to form a first gap 415, which can avoid the material of the previously formed filter unit 61 from remaining in the first gap 415 of other packaging parts 41 and affecting the light emission effect of the corresponding light-emitting unit 30. For example, it can avoid the material of the first filter unit 61a from remaining in the first gap 415 of the second packaging part 41b and the third packaging part 41c and affecting the light emission effect of the second light-emitting unit 30b and the third light-emitting unit 30c. It can also avoid the material of the second filter unit 61b from remaining in the first gap 415 of the third packaging part 41c and affecting the light emission effect of the third light-emitting unit 30c.

[0169] Preferably, any two of the first light emitting unit 30a, the second light emitting unit 30b and the third light emitting unit 30c have different colors.

[0170] Please continue reading Figure 2 Preferably, the multiple support structures 50 include a first support structure 50a, a second support structure 50b and a third support structure 50c, the first support structure 50a is located in the second gap 414 between the third segment 413 of the first packaging part 41a and the side surface of the isolation structure 20 facing away from the substrate 10, the second support structure 50b is located in the second gap 414 between the third segment 413 of the second packaging part 41b and the side surface of the isolation structure 20 facing away from the substrate 10, and the third support structure 50c is located in the second gap 414 between the third segment 413 of the third packaging part 41c and the side surface of the isolation structure 20 facing away from the substrate 10.

[0171] Preferably, the first packaging portion 41a is located on the side of the isolation structure 20 facing away from the substrate 10, and forms a first sub-gap 414a between the first packaging portion 41a and the side surface of the isolation structure 20 facing away from the substrate 10, the second packaging portion 41b is located on the side of the isolation structure 20 facing away from the substrate 10, and forms a second sub-gap 414b between the first packaging portion 41b and the side surface of the isolation structure 20 facing away from the substrate 10, and the third packaging portion 41c is located on the side of the isolation structure 20 facing away from the substrate 10, and forms a third sub-gap 414c between the first packaging portion 414a, the second sub-gap 414b and the third sub-gap 414c; wherein, along the direction perpendicular to the plane where the substrate 10 is located, the height of the first sub-gap 414a, the height of the second sub-gap 414b and the height of the third sub-gap 414c are different from each other.

[0172] Preferably, any two of the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c are made of different materials.

[0173] Preferably, at least part of the first supporting structure 50a is made of the same material as the first filter unit 61a, at least part of the second supporting structure 50b is made of the same material as the second filter unit 61b, and at least part of the third supporting structure 50c is made of the same material as the third filter unit 61c.

[0174] In some embodiments, along a direction perpendicular to the plane where the substrate 10 is located, the side of the first filter unit 61a away from the substrate 10 has a first distance to the surface of the substrate 10, the side of the second filter unit 61b away from the substrate 10 has a second distance to the surface of the substrate 10, and the side of the third filter unit 61c away from the substrate 10 has a third distance to the surface of the substrate 10, and the first distance, the second distance and the third distance are the same.

[0175] Preferably, the light emission wavelength of the first light emitting unit 30a is greater than that of the second light emitting unit 30b, and the wavelength of the second light emitting unit 30b is greater than that of the third light emitting unit 30c.

[0176] Preferably, along the direction perpendicular to the plane where the substrate 10 is located, the first distance, the second distance and the third distance are the maximum distances from the side of the filter unit 61 away from the substrate 10 to the substrate 10, or are the average distances from the side of the filter unit 61 away from the substrate 10 to the substrate 10, or are the distances between the filter unit 61 and the substrate 10 passing through the center of the light-emitting unit 30 along the direction perpendicular to the plane where the substrate 10 is located.

[0177] In some embodiments, the thickness of the first light emitting unit 30a is greater than the thickness of the second light emitting unit 30b, and the thickness of the second light emitting unit 30b is greater than or equal to the thickness of the third light emitting unit 30c.

[0178] Preferably, along a direction perpendicular to the substrate 10 , the thickness of the first filter unit 61 a is less than that of the second filter unit 61 b ​​, and the thickness of the second filter unit 61 b ​​is less than or equal to that of the third filter unit 61 c .

[0179] Preferably, the thickness of the filter unit 61 is the thickness of the filter unit 61 along a direction perpendicular to the substrate 10 and passing through the center line of the light emitting unit 30 located on a side of the filter unit 61 close to the substrate 10 .

[0180] It should be noted that the above embodiments have the same or similar effects as the corresponding embodiments of the display panel 100 provided in the first aspect of the present application, and thus will not be repeated here.

[0181] Please continue reading Figure 7In some embodiments, the isolation structure 20 includes a first isolation portion 22 and a second isolation portion 23 arranged on the side of the first isolation portion 22 away from the substrate 10, and the orthographic projection of the first isolation portion 22 on the substrate 10 is located within the orthographic projection of the second isolation portion 23 on the substrate 10. The second isolation portion 23 can protrude relative to the first isolation portion 22 in a direction close to the isolation opening 21. Therefore, the light-emitting material can be separated by the second isolation portion 23 to form a light-emitting unit 30, so that the light-emitting unit 30 is located in the isolation opening 21, and no mask is required to prepare the light-emitting unit 30, which can save costs.

[0182] Preferably, the second isolation portion 23 includes a first surface 231 facing the substrate 10, a second surface 232232 facing away from the substrate 10, and a side surface 233 connecting the first surface 231 and the second surface 232. The second segment 412 includes a first portion 4121, a second portion 4122, and a third portion 4123 connected in sequence. The first portion 4121 is located on the side of the first isolation portion 22 facing the isolation opening 21, the second portion 4122 is located on a portion of the first surface 231, the third portion 4123 is located on the side surface 233, and the third portion 4123 is connected to the side of the first segment 411 facing away from the substrate 10 to form a first gap 415. Since the second isolation portion 23 protrudes from the first isolation portion 22 in a direction close to the isolation opening 21, the second segment 412 located on the side surface 233 of the second isolation portion 23 can be easily connected to the side of the first segment 411 facing away from the substrate 10.

[0183] Preferably, the orthographic projection of the second surface 232 on the substrate 10 is located within the orthographic projection of the first surface 231 on the substrate 10. Therefore, the second surface 232 can protrude toward the isolation opening 21 relative to the first surface 231, so that the partial third portion 4123 close to the second surface 232 can be easily connected to the first segment 411.

[0184] Preferably, the isolation structure 20 also includes a third isolation portion 24, which is arranged on the side of the first isolation portion 22 facing the substrate 10 to increase the height of the isolation structure 20, which is equivalent to making the isolation opening 21 have a larger height difference. When preparing the light-emitting unit 30, due to the larger height difference at the isolation opening 21, the light-emitting material is easier to disconnect at the isolation structure 20, thereby reducing the difficulty of preparing the light-emitting unit 30.

[0185] See also Figure 8 According to a third aspect of the present application, there is provided a method for preparing a display panel 100, comprising:

[0186] S10 , forming an isolation structure 20 on one side of the substrate 10 , wherein the isolation structure 20 encloses an isolation opening 21 .

[0187] S20. A light-emitting unit 30 and a first encapsulation layer 40 are formed in the isolation opening 21. The first encapsulation layer 40 includes a plurality of encapsulation portions 41 that are spaced apart from each other. The encapsulation portions 41 enclose a first gap 415 that is located on a side of the isolation structure 20 close to the substrate 10. The first gap 415 is a closed gap. The orthographic projection of the first gap 415 on the substrate 10 at least partially overlaps with the orthographic projection of the isolation structure 20 on the substrate 10.

[0188] Specifically, the light-emitting unit 30 and the packaging part 41 located in the same isolation opening 21 can be prepared and formed in sequence. For example, a first light-emitting material layer and a first packaging material layer can be formed in sequence on the side of the isolation structure 20 away from the substrate 10, and then the first packaging material layer is etched to form the first packaging part 41a, and then the first light-emitting material layer is etched to form the first light-emitting unit 30a. Then, a second light-emitting material layer and a second packaging material layer are formed on the side of the isolation structure 20 away from the substrate 10, and the second packaging material is etched to form the second packaging part 41b, and then the second light-emitting material layer is etched to form the second light-emitting unit 30b. Then, a third light-emitting material layer and a third packaging material layer are formed on the side of the isolation structure 20 away from the substrate 10, and the third packaging material is etched to form the third packaging part 41c, and then the third light-emitting material layer is etched to form the third light-emitting unit 30c. It can be understood that in the above-mentioned process of etching the light-emitting material layer, the etching material can etch and remove the light-emitting material between part of the packaging part 41 and the surface of the isolation structure 20 facing away from the substrate 10, thereby forming a second gap 414 between the part of the packaging part 41 and the surface of the isolation structure 20 facing away from the substrate 10.

[0189] S30 , forming a filter layer 60 , wherein the filter layer 60 includes a plurality of filter units 61 , at least part of the filter units 61 are located in the isolation opening 21 and are disposed on a side of the packaging portion 41 away from the substrate 10 .

[0190] In these embodiments, an isolation structure 20 is first formed on one side of the substrate 10, the isolation structure 20 encloses an isolation opening 21, and then a light-emitting unit 30 and a first encapsulation layer 40 are formed in the isolation opening 21, wherein the first encapsulation layer 40 includes a plurality of encapsulation portions 41 arranged at intervals, the encapsulation portions 41 enclose a first gap 415 located on a side of the isolation structure 20 close to the substrate 10, the first gap 415 is a closed gap, and the orthographic projection of the first gap 415 on the substrate 10 at least partially overlaps with the orthographic projection of the isolation structure 20 on the substrate 10, and then a filter is formed. Layer 60, the filter layer 60 includes a plurality of filter units 61, at least some of the filter units 61 are located in the isolation opening 21 and are arranged on the side of the packaging part 41 away from the substrate 10. In this process, since the first gap 415 of the packaging part 41 is a closed gap, it is possible to avoid the material of the previously formed filter unit 61 remaining in the first gap 415 of the packaging part 41 corresponding to the subsequently formed filter unit 61, thereby avoiding the light emitting effect of the light-emitting unit 30 corresponding to the subsequently formed filter unit 61 being affected by the residual material, so as to improve the performance of the display panel 100.

[0191] In some embodiments, in the step of forming the light-emitting unit 30 and the first encapsulation layer 40 in the isolation opening 21, the encapsulation portion 41 includes a first segment 411, a second segment 412, and a third segment 413, the first segment 411 covers the light-emitting unit 30, the second segment 412 is located on a side wall of the isolation structure 20 facing the isolation opening 21, and the third segment 413 is located on a side of the isolation structure 20 facing away from the substrate 10, and forms a second gap 414 with a surface of the side of the isolation structure 20 facing away from the substrate 10;

[0192] The step of forming the filter layer 60 further includes forming a support structure 50 , and the support structure 50 is located in the second gap 414 .

[0193] In these embodiments, the encapsulation part 41 includes a first segment 411, a second segment 412 and a third segment 413, the first segment 411 covers the light-emitting unit 30, the second segment 412 is located on a side wall of the isolation structure 20 facing the isolation opening 21, and the third segment 413 is located on a side of the isolation structure 20 away from the substrate 10, which can extend the invasion path of impurities such as water vapor, while increasing the contact area between the encapsulation part 41 and the isolation structure 20, improving the reliability and stability of the encapsulation part 41, and thus improving the encapsulation effect. In addition, a second gap 414 is formed between the third segment 413 and the side surface of the isolation structure 20 away from the substrate 10, and in the step of forming the filter layer 60, a support structure 50 is also formed, so that the third segment 413 can be supported in the second gap 414 by the support structure 50, so as to reduce the risk of deformation or even collapse of the third segment 413, improve the sealing effect of the first encapsulation layer 40, and thus improve the performance of the display panel 100. In addition, the support structure 50 is prepared simultaneously during the step of forming the filter layer 60 , without the need for additional processes for preparing the support structure 50 or the filter unit 61 , which can simplify the preparation process of the display panel 100 and reduce the preparation difficulty and cost.

[0194] It should be noted that the filter unit 61 and the support structure 50 are prepared and formed in the same process step, and the material of the filter unit 61 is the same as that of the support structure 50. Of course, the support structure 50 may also include other materials, which is not limited in this embodiment.

[0195] See also Fig. 9 Preferably, the plurality of light emitting units 30 include a first light emitting unit 30a, a second light emitting unit 30b and a third light emitting unit 30c, and the plurality of encapsulation parts 41 include a first encapsulation part 41a for encapsulating the first light emitting unit 30a, a second encapsulation part 41b for encapsulating the second light emitting unit 30b and a third encapsulation part 41c for encapsulating the third light emitting unit 30c. The steps of forming the filter layer 60 include:

[0196] S31, forming a first filter material layer on the side of the first packaging layer 40 facing away from the substrate 10;

[0197] S32, patterning the first filter material layer to form a first filter unit 61a, wherein the first filter unit 61a is disposed on a side of the first packaging portion 41a away from the substrate 10;

[0198] S33, forming a second filter material layer on the side of the first packaging layer 40 facing away from the substrate 10;

[0199] S34, patterning the second filter material layer to form a second filter unit 61b, wherein the second filter unit 61b is disposed on a side of the second packaging portion 41b away from the substrate 10;

[0200] S35, forming a third filter material layer on the side of the first packaging layer 40 facing away from the substrate 10;

[0201] S36 , patterning the third filter material layer to form a third filter unit 61 c , wherein the third filter unit 61 c is disposed on a side of the third packaging portion 41 c away from the substrate 10 .

[0202] In these embodiments, by sequentially forming a first filter unit 61a, a second filter unit 61b and a third filter unit 61c on a side of the first packaging portion 41a facing away from the substrate 10, a side of the second packaging portion 41b facing away from the substrate 10, and a side of the third packaging portion 41c facing away from the substrate 10, the first filter unit 61a, the second filter unit 61b and the third filter unit 61c can respectively filter the stray light of the first light-emitting unit 30a, the second light-emitting unit 30b and the third light-emitting unit 30c, thereby improving the light output effect of the corresponding light-emitting unit 30.

[0203] Preferably, in the step of patterning the first filter material layer to form the first filter unit 61a, a first support structure 50a is also formed, and the first support structure 50a is located in the second gap 414 between the first packaging portion 41a and the surface of the isolation structure 20 on the side facing away from the substrate 10;

[0204] In the step of patterning the second filter material layer to form the second filter unit 61b, a second support structure 50b is also formed, and the second support structure 50b is located in the second gap 414 between the second packaging portion 41b and the surface of the isolation structure 20 facing away from the substrate 10;

[0205] In the step of patterning the third filter material layer to form the third filter unit 61c, a third support structure 50c is also formed. The third support structure 50c is located in the second gap 414 between the third packaging portion 41c and the surface of the isolation structure 20 facing away from the substrate 10.

[0206] In these embodiments, the first filter unit 61a and the first supporting structure 50a are prepared and formed by the same process, the second filter unit 61b and the second supporting structure 50b are prepared and formed by the same process, and the third filter unit 61c and the third supporting structure 50c are prepared and formed by the same process. Therefore, no additional process is required for preparing the first supporting structure 50a, the second supporting structure 50b and the third supporting structure 50c, which can simplify the preparation process of the display panel 100 and reduce the preparation difficulty and cost.

[0207] In a fourth aspect, the present application provides a display device, including any of the display panels 100 described above or a display panel 100 prepared by any of the preparation methods described above. Since the display device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0208] The display device may be any device with a display function, for example, a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. It may also be a non-mobile device such as a personal computer (PC), a television (TV), a teller machine, or an automated machine.

[0209] Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted for facilitating the understanding of this application and are not intended to limit the present invention. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of protection of this application shall still be subject to the scope defined in the attached claims.

[0210] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure is disposed on one side of the substrate and encloses an isolation opening; A light emitting unit is disposed in the isolation opening; A first encapsulation layer includes a plurality of encapsulation parts arranged at intervals, wherein the encapsulation parts enclose a first gap located on a side of the isolation structure close to the substrate, the first gap is a closed gap, and an orthographic projection of the first gap on the substrate at least partially overlaps with an orthographic projection of the isolation structure on the substrate; The filter layer includes a plurality of filter units, at least some of which are located in the isolation opening and are arranged on a side of the packaging portion away from the substrate.

2. The display panel according to claim 1, characterized in that: The encapsulation portion includes a first segment, a second segment and a third segment, the first segment covers the light-emitting unit, the second segment is located on a side wall of the isolation structure facing the isolation opening, and the third segment is located on a side of the isolation structure away from the substrate, and forms a second gap with a side surface of the isolation structure away from the substrate; The display panel further includes a supporting structure disposed in the second gap; Preferably, at least a portion of the support structure and the filter unit are provided in the same layer and with the same material.

3. The display panel according to claim 2, characterized in that: The plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the plurality of encapsulation parts include a first encapsulation part, a second encapsulation part and a third encapsulation part, the first encapsulation part is used to encapsulate the first light-emitting unit, the second encapsulation part is used to encapsulate the second light-emitting unit, and the third encapsulation part is used to encapsulate the third light-emitting unit; Preferably, the plurality of filter units include a first filter unit, a second filter unit and a third filter unit, the first filter unit is arranged on a side of the first packaging portion away from the substrate, the second filter unit is arranged on a side of the second packaging portion away from the substrate, and the third filter unit is arranged on a side of the third packaging portion away from the substrate; Preferably, any two of the first light emitting unit, the second light emitting unit and the third light emitting unit have different colors; Preferably, the plurality of support structures include a first support structure, a second support structure and a third support structure, the first support structure is located in a second gap between the third segment of the first packaging portion and a side surface of the isolation structure facing away from the substrate, the second support structure is located in a second gap between the third segment of the second packaging portion and a side surface of the isolation structure facing away from the substrate, and the third support structure is located in a second gap between the third segment of the third packaging portion and a side surface of the isolation structure facing away from the substrate; Preferably, the first encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a first sub-gap with a surface of the isolation structure away from the substrate; the second encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a second sub-gap with a surface of the isolation structure away from the substrate; the third encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a third sub-gap with a surface of the isolation structure away from the substrate; Wherein, along a direction perpendicular to the plane where the substrate is located, the height of the first sub-gap, the height of the second sub-gap and the height of the third sub-gap are different from each other; Preferably, any two of the first supporting structure, the second supporting structure and the third supporting structure are made of different materials; Preferably, at least part of the first supporting structure is made of the same material as the first filter unit, at least part of the second supporting structure is made of the same material as the second filter unit, and at least part of the third supporting structure is made of the same material as the third filter unit.

4. The display panel according to claim 3, characterized in that: Along a direction perpendicular to the plane where the substrate is located, a first distance is provided between a side of the first filter unit away from the substrate and the substrate surface, a second distance is provided between a side of the second filter unit away from the substrate and the substrate surface, and a third distance is provided between a side of the third filter unit away from the substrate and the substrate surface, and the first distance, the second distance and the third distance are the same; Preferably, the light emission wavelength of the first light emitting unit is greater than the wavelength of the second light emitting unit, and the wavelength of the second light emitting unit is greater than the wavelength of the third light emitting unit; Preferably, along a direction perpendicular to the plane where the substrate is located, the first distance, the second distance and the third distance are the maximum distances from a side of the filter unit away from the substrate to the substrate, or are the average distances from a side of the filter unit away from the substrate to the substrate, or are the distances between the filter unit and the substrate along a direction perpendicular to the plane where the substrate is located passing through the center of the light-emitting unit.

5. The display panel according to claim 3, characterized in that: The thickness of the first light-emitting unit is greater than the thickness of the second light-emitting unit, and the thickness of the second light-emitting unit is greater than or equal to the thickness of the third light-emitting unit; Preferably, along a direction perpendicular to the substrate, the thickness of the first filter unit is less than the thickness of the second filter unit, and the thickness of the second filter unit is less than or equal to the thickness of the third filter unit; Preferably, the thickness of the filter unit is the thickness of the filter unit along a direction perpendicular to the substrate and passing through a center line of the light emitting unit located on a side of the filter unit close to the substrate.

6. The display panel according to claim 2, characterized in that: The light-emitting unit comprises a first electrode, a light-emitting functional layer and a second electrode, wherein the first electrode, the light-emitting functional layer and the second electrode are stacked in a direction away from the substrate; Preferably, part of the support structure is provided in the same layer and material as the second electrode; Preferably, the second electrode is electrically connected to the isolation structure.

7. The display panel according to claim 2, characterized in that: A side of the first segment facing away from the substrate is connected to a side of the second segment facing the isolation opening to form the first gap; Preferably, the first encapsulation layer comprises an inorganic material.

8. The display panel according to claim 7, characterized in that: The isolation structure comprises a first isolation portion and a second isolation portion arranged on a side of the first isolation portion away from the substrate, wherein an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate; Preferably, the second isolation portion includes a first surface facing the substrate, a second surface facing away from the substrate, and a side surface connecting the first surface and the second surface, the second segment includes a first portion, a second portion, and a third portion connected in sequence, the first portion is located on a side of the first isolation portion facing the isolation opening, the second portion is located on a portion of the first surface, the third portion is located on the side surface, and the third portion is connected to a side of the first segment facing away from the substrate to form the first gap; Preferably, the display panel further comprises a pixel definition layer, the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, the pixel definition portion is located between the substrate and the isolation structure, and the pixel opening is connected to the corresponding isolation opening; Preferably, the first segment includes a fourth portion and a fifth portion disposed on a side of the fourth portion close to the isolation structure, the orthographic projection of the fourth portion on the substrate is located within the orthographic projection of the pixel opening on the substrate, the orthographic projection of the fifth portion on the substrate is located within the orthographic projection of the pixel defining portion on the substrate, and the fifth portion is connected to the third portion of the second segment to form the first gap; Preferably, the orthographic projection of the second surface on the substrate is located within the orthographic projection of the first surface on the substrate; Preferably, the isolation structure further includes a third isolation portion, and the third isolation portion is arranged on a side of the first isolation portion facing the substrate.

9. The display panel according to any one of claims 1 to 8, characterized in that: The display panel further comprises a second encapsulation layer, wherein the second encapsulation layer covers a side of the filter unit away from the substrate; Preferably, the material of the second encapsulation layer includes an organic material; Preferably, the display panel further comprises a third encapsulation layer, and the third encapsulation layer is arranged on a side of the second encapsulation layer away from the substrate; Preferably, the material of the third encapsulation layer includes inorganic material.

10. The display panel according to any one of claims 1 to 8, characterized in that: The display panel further includes a light shielding layer, the light shielding layer includes a light shielding unit, and the light shielding unit is located on a side of the isolation structure away from the substrate; Preferably, the shading unit is located between two adjacent filter units, and the orthographic projection of the shading unit on the substrate partially overlaps with the orthographic projection of the adjacent filter unit on the substrate; Preferably, the orthographic projection of the shading unit on the substrate is located within the orthographic projection of the isolation structure on the substrate; Preferably, the side wall of the filter unit close to the isolation structure is an inclined surface or a curved surface; Preferably, a distance from a side surface of the shading unit facing away from the substrate to the substrate surface is greater than or equal to a distance from a side surface of the filtering unit facing away from the substrate surface to the substrate.

11. The display panel according to any one of claims 1 to 8, characterized in that: Two adjacent filter units partially overlap along a direction perpendicular to the plane where the substrate is located; Preferably, the orthographic projection of the overlapping area of ​​two adjacent filter units on the substrate is located within the orthographic projection of the isolation structure on the substrate.

12. A display panel, characterized in that: include: substrate; An isolation structure is disposed on one side of the substrate and encloses an isolation opening; A light emitting unit is disposed in the isolation opening; A first encapsulation layer, comprising an encapsulation portion, wherein at least a portion of the encapsulation portion is located on a side of the light-emitting unit away from the substrate, and a portion of the encapsulation portion is also located on a side of the isolation structure away from the substrate, and a second gap is formed between the first encapsulation layer and a surface of the isolation structure away from the substrate; A filter layer, comprising a filter unit, wherein the filter unit is located in the isolation opening and is disposed on a side of the packaging portion away from the substrate; The supporting structure is arranged in the second gap.

13. The display panel according to claim 12, characterized in that: At least part of the support structure is provided in the same layer and the same material as the filter unit; Preferably, the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the plurality of encapsulation parts include a first encapsulation part, a second encapsulation part and a third encapsulation part, the first encapsulation part is used to encapsulate the first light-emitting unit, the second encapsulation part is used to encapsulate the second light-emitting unit, and the third encapsulation part is used to encapsulate the third light-emitting unit; Preferably, the plurality of filter units include a first filter unit, a second filter unit and a third filter unit, the first filter unit is arranged on a side of the first packaging portion away from the substrate, the second filter unit is arranged on a side of the second packaging portion away from the substrate, and the third filter unit is arranged on a side of the third packaging portion away from the substrate; Preferably, any two of the first light emitting unit, the second light emitting unit and the third light emitting unit have different colors; Preferably, the plurality of supporting structures include a first supporting structure, a second supporting structure and a third supporting structure, wherein the first supporting structure is located in a second gap between the first packaging portion and a side surface of the isolation structure facing away from the substrate, the second supporting structure is located in a second gap between the second packaging portion and a side surface of the isolation structure facing away from the substrate, and the third supporting structure is located in a second gap between the third packaging portion and a side surface of the isolation structure facing away from the substrate; Preferably, the first encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a first sub-gap with a surface of the isolation structure away from the substrate; the second encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a second sub-gap with a surface of the isolation structure away from the substrate; the third encapsulation portion is located on a side of the isolation structure away from the substrate, and forms a third sub-gap with a surface of the isolation structure away from the substrate; Wherein, along a direction perpendicular to the plane where the substrate is located, the height of the first sub-gap, the height of the second sub-gap and the height of the third sub-gap are different from each other; Preferably, any two of the first supporting structure, the second supporting structure and the third supporting structure are made of different materials; Preferably, at least part of the first supporting structure is made of the same material as the first filter unit, at least part of the second supporting structure is made of the same material as the second filter unit, and at least part of the third supporting structure is made of the same material as the third filter unit.

14. The display panel according to claim 13, characterized in that: Along a direction perpendicular to the plane where the substrate is located, a first distance is provided between a side of the first filter unit away from the substrate and the substrate surface, a second distance is provided between a side of the second filter unit away from the substrate and the substrate surface, and a third distance is provided between a side of the third filter unit away from the substrate and the substrate surface, and the first distance, the second distance and the third distance are the same; Preferably, the light emission wavelength of the first light emitting unit is greater than the wavelength of the second light emitting unit, and the wavelength of the second light emitting unit is greater than the wavelength of the third light emitting unit; Preferably, along a direction perpendicular to the plane where the substrate is located, the first distance, the second distance and the third distance are the maximum distances from a side of the filter unit away from the substrate to the substrate, or are the average distances from a side of the filter unit away from the substrate to the substrate, or are the distances between the filter unit and the substrate along a direction perpendicular to the plane where the substrate is located passing through the center of the light-emitting unit.

15. The display panel according to claim 13, characterized in that: The thickness of the first light-emitting unit is greater than the thickness of the second light-emitting unit, and the thickness of the second light-emitting unit is greater than or equal to the thickness of the third light-emitting unit; Preferably, along a direction perpendicular to the substrate, the thickness of the first filter unit is less than the thickness of the second filter unit, and the thickness of the second filter unit is less than or equal to the thickness of the third filter unit; Preferably, the thickness of the filter unit is the thickness of the filter unit along a direction perpendicular to the substrate and passing through a center line of the light emitting unit located on a side of the filter unit close to the substrate.

16. A method for preparing a display panel, characterized in that: include: An isolation structure is formed on one side of the substrate, wherein the isolation structure encloses an isolation opening; A light-emitting unit and a first encapsulation layer are formed in the isolation opening, wherein the first encapsulation layer includes a plurality of encapsulation parts arranged at intervals, wherein the encapsulation parts enclose a first gap located on a side of the isolation structure close to the substrate, wherein the first gap is a closed gap, and an orthographic projection of the first gap on the substrate at least partially overlaps with an orthographic projection of the isolation structure on the substrate; A filter layer is formed, wherein the filter layer comprises a plurality of filter units, at least some of which are located in the isolation opening and are arranged on a side of the packaging portion away from the substrate.

17. The preparation method according to claim 16, characterized in that: In the step of forming the light-emitting unit and the first encapsulation layer in the isolation opening, the encapsulation portion includes a first segment, a second segment and a third segment, the first segment covers the light-emitting unit, the second segment is located on a side wall of the isolation structure facing the isolation opening, and the third segment is located on a side of the isolation structure away from the substrate, and forms a second gap with a surface of the side of the isolation structure away from the substrate; The step of forming the filter layer further includes forming a support structure, wherein the support structure is located in the second gap; Preferably, the plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit, the plurality of encapsulation parts include a first encapsulation part for encapsulating the first light-emitting unit, a second encapsulation part for encapsulating the second light-emitting unit and a third encapsulation part for encapsulating the third light-emitting unit, and the step of forming the filter layer includes: forming a first light filter material layer on a side of the first packaging layer away from the substrate; Performing patterning on the first filter material layer to form a first filter unit, wherein the first filter unit is disposed on a side of the first packaging portion away from the substrate; forming a second filter material layer on a side of the first packaging layer away from the substrate; performing patterning on the second filter material layer to form a second filter unit, wherein the second filter unit is disposed on a side of the second packaging portion away from the substrate; forming a third filter material layer on a side of the first packaging layer away from the substrate; Performing patterning on the third filter material layer to form a third filter unit, wherein the third filter unit is disposed on a side of the third packaging portion away from the substrate; Preferably, in the step of patterning the first filter material layer to form the first filter unit, a first support structure is also formed, and the first support structure is located in a second gap between the first packaging portion and a surface of the isolation structure on a side away from the substrate; In the step of patterning the second filter material layer to form the second filter unit, a second support structure is also formed, and the second support structure is located in a second gap between the second packaging portion and a surface of the isolation structure on a side away from the substrate; In the step of patterning the third filter material layer to form a third filter unit, a third support structure is also formed. The third support structure is located in a second gap between the third packaging portion and a surface of the isolation structure facing away from the substrate.

18. A display device, characterized in that: A display panel comprising any one of claims 1 to 15 or a display panel prepared by the preparation method of claim 16 or 17.

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