Display panel, display device and preparation method of display panel

Abstract

The invention relates to the technical field of display, and particularly provides a display panel, a display device and a preparation method of the display panel, the display panel comprises a substrate and an isolation structure, the isolation structure is located on one side of the substrate, the isolation structure comprises a supporting part and a crown part, the crown part is located on the side, opposite to the substrate, of the supporting part, and the crown part is located on the side, opposite to the substrate, of the supporting part. The isolation structure is enclosed to form an isolation opening; wherein one end, close to the isolation opening, of at least part of the crown part is inclined towards the base. According to the display panel, the reliability of the display panel can be improved through the inclined crown part, and the use performance of the display panel is improved.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and more specifically, to a display panel, a display device, and a method for manufacturing a display panel. Background Art

[0002] Organic Light Emitting Diode (OLED) and flat-panel display devices based on technologies such as OLED have the advantages of high image quality, power saving, thin body and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc., 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 present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel to improve the performance of the display panel.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is: to provide a display panel, comprising a substrate and an isolation structure, wherein the isolation structure is located on one side of the substrate, the isolation structure comprises a support portion and a crown portion, the crown portion is located on the side of the support portion facing away from the substrate, and the isolation structure encloses to form an isolation opening;

[0007] Wherein, at least part of the crown portion is inclined toward the base at one end close to the isolation opening.

[0008] In the display panel provided in the embodiment of the present application, by setting one end of the crown near the isolation opening to be inclined toward the side close to the substrate, the distance between the crown and the substrate can be effectively shortened, thereby reducing the difficulty of packaging the isolation opening in subsequent processes, helping to improve the reliability of the display panel, reduce failures caused by packaging defects, and enable the display panel to have better performance.

[0009] Optionally, a pixel definition layer is further provided between the substrate and the isolation structure, the pixel definition layer is provided with a pixel opening, and the pixel opening is provided corresponding to and connected with the isolation opening; the isolation opening comprises a first opening, a second opening and a third opening, the minimum distance between the crown portion corresponding to the first opening and the pixel definition layer is a first spacing, the minimum distance between the crown portion corresponding to the second opening and the pixel definition layer is a second spacing, and the minimum distance between the crown portion corresponding to the third opening and the pixel definition layer is a third spacing;

[0010] The first spacing is not greater than the second spacing, and the second spacing is not greater than the third spacing.

[0011] Optionally, the crown portion has a blocking sub-portion and an inclined sub-portion, and the inclined sub-portion is located on a side of the blocking sub-portion close to the isolation opening.

[0012] Optionally, the inclined sub-portion and the blocking sub-portion are an integral structure, and the inclined sub-portion is arranged around the blocking sub-portion.

[0013] Optionally, on the positive cross section of the display panel, the inclined sub-portion has an inclined bottom wall, and the angle between the bottom wall and the surface where the substrate is located is an inclined angle; the isolation opening includes a first opening, a second opening and a third opening, the inclined angle corresponding to the first opening is a first inclined angle, the inclined angle corresponding to the second opening is a second inclined angle, and the inclined angle corresponding to the third opening is a third inclined angle;

[0014] Wherein, the first inclination angle is not less than the second inclination angle, and the second inclination angle is not less than the third inclination angle.

[0015] Optionally, the first inclination angle is 50° to 89°, the second inclination angle is 20° to 50°, and the third inclination angle is 0° to 30°.

[0016] Optionally, the display panel further includes a display function layer and an encapsulation layer, the display function layer is located on the substrate and includes a plurality of light-emitting devices located in the corresponding isolation openings; the encapsulation layer is located on the side of the isolation structure and the light-emitting devices facing away from the substrate, and at least part of the encapsulation layer covering the side of the crown is closed to the part covering the light-emitting devices.

[0017] Optionally, the encapsulation layer defines a closed cavity on a side of the isolation structure facing the isolation opening;

[0018] Optionally, the closed chamber corresponding to the first opening is a first chamber, the closed chamber corresponding to the second opening is a second chamber, and the closed chamber corresponding to the third opening is a third chamber, wherein the spatial dimension of the first chamber is not larger than the spatial dimension of the second chamber, and the spatial dimension of the second chamber is not larger than the spatial dimension of the third chamber.

[0019] Optionally, the encapsulation layer includes a first encapsulation sub-portion and a second encapsulation sub-portion, the first encapsulation sub-portion covers the side of the crown and is partially located on the side of the crown facing away from the substrate; the second encapsulation sub-portion covers the side of the light-emitting device facing away from the substrate; the first encapsulation sub-portion and the second encapsulation sub-portion are connected to form a closed area.

[0020] Optionally, the closed area width corresponding to the first opening is a first width, the closed area width corresponding to the second opening is a second width, and the closed area width corresponding to the third opening is a third width;

[0021] The first width is not less than the second width, and the second width is not less than the third width.

[0022] Optionally, the encapsulation layer further includes a third encapsulation sub-portion, the third encapsulation sub-portion covers a side wall of the isolation structure facing the isolation opening, and the third encapsulation sub-portion connects the first encapsulation sub-portion and the second encapsulation sub-portion.

[0023] Optionally, the light-emitting device includes a first electrode, a light-emitting functional layer and a second electrode which are sequentially stacked on the substrate.

[0024] Optionally, the light-emitting functional layer includes a first light-emitting functional layer, a second light-emitting functional layer and a third light-emitting functional layer having different light-emitting colors; wherein at least one of the first light-emitting functional layer, the second light-emitting functional layer and the third light-emitting functional layer is disposed in the isolation opening.

[0025] Optionally, the wavelength of the light emitted from the first light-emitting functional layer is smaller than the wavelength of the light emitted from the second light-emitting functional layer, and the wavelength of the light emitted from the second light-emitting functional layer is smaller than the wavelength of the light emitted from the third light-emitting functional layer.

[0026] Optionally, the emergent light of the first light-emitting functional layer is blue light, the emergent light of the second light-emitting functional layer is green light, and the emergent light of the third light-emitting functional layer is red light.

[0027] Optionally, the second electrode overlaps a side surface of the isolation structure close to one end of the substrate.

[0028] Optionally, the orthographic projection of the support portion on the base is located within the orthographic projection of the crown portion on the base.

[0029] Optionally, the support portion includes at least two superimposed sub-support portions, and an orthographic projection of the sub-support portion farther from the substrate on the substrate is located within a range of an orthographic projection of the sub-support portion closer to the substrate on the substrate.

[0030] Optionally, the orthographic projection of the sub-support portion closest to the base on the base is located within the range of the orthographic projection of the crown portion on the base.

[0031] Optionally, in the normal cross section of the display panel, a cross-sectional profile of a portion of the support portion located between two adjacent isolation openings is one of a rectangle, a trapezoid and an inverted trapezoid.

[0032] Optionally, an orthographic projection of the blocking sub-portion on the substrate coincides with an orthographic projection of the supporting portion on the substrate.

[0033] Optionally, an orthographic projection of the inclined sub-portion on the substrate partially coincides with an orthographic projection of the supporting portion on the substrate.

[0034] Optionally, in the normal cross section of the display panel, a cross-sectional profile of a portion of the support portion located between two adjacent isolation openings is one of a rectangle, a trapezoid and an inverted trapezoid.

[0035] Optionally, on the positive cross section of the display panel, the cross-sectional profile of the portion of the blocking sub-portion located between two adjacent isolation openings is a rectangle, and the cross-sectional profile of the portion of the inclined sub-portion located between two adjacent isolation openings is one of a parallelogram, a triangle, and a trapezoid.

[0036] The present application also provides a display device, comprising any of the display panels described above.

[0037] In the embodiment provided in the present application, the display device has the above-mentioned display panel, and thus has at least the advantages of the above-mentioned display panel. The specific effects are described above and will not be repeated here.

[0038] The present application also provides a method for preparing a display panel, comprising:

[0039] providing a substrate;

[0040] Preparing an isolation structure on one side of the substrate, wherein the isolation structure encloses an isolation opening;

[0041] The isolation structure comprises a support portion and a crown portion, wherein the crown portion is located on a side of the support portion facing away from the base, and at least one end of a portion of the crown portion close to the isolation opening is inclined toward the base.

[0042] In the method for preparing the display panel provided in the embodiment of the present application, by setting the end of the crown near the isolation opening to be inclined toward the direction where the substrate is located, the distance between the crown and the substrate can be shortened. Since the distance between the crown and the substrate is shortened, the difficulty of sealing the encapsulation layer at this position can be greatly reduced when preparing the encapsulation layer, which helps to improve the reliability of the display panel, reduce failures caused by encapsulation defects, and make the display panel have better performance.

[0043] Optionally, after the step of preparing an isolation structure on one side of the substrate and enclosing the isolation structure to form an isolation opening, the method further includes:

[0044] A light emitting device is prepared in the isolation opening, and a packaging layer covering the isolation structure is prepared on a side of the light emitting device that is away from the substrate.

[0045] Optionally, the isolation opening includes a first opening, a second opening and a third opening;

[0046] The step of preparing a light-emitting device in the isolation opening and preparing a packaging layer covering the isolation structure on a side of the light-emitting device facing away from the substrate comprises:

[0047] Preparing a display material layer on the isolation structure, forming an encapsulation material layer on the side of the display material layer facing away from the substrate, etching and patterning the encapsulation material layer and the display material layer to form a light-emitting device located in the first opening, and an encapsulation layer covering the first opening;

[0048] Preparing a display material layer on the isolation structure, forming an encapsulation material layer on the side of the display material layer facing away from the substrate, etching and patterning the encapsulation material layer and the display material layer to form a light-emitting device located in the second opening, and an encapsulation layer covering the second opening;

[0049] A display material layer is prepared on the isolation structure, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate. The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device located in the third opening and an encapsulation layer covering the third opening.

[0050] The beneficial effects of the display panel, display device and display panel preparation method provided in the present application are: compared with the related art, the display panel provided in the present application can shorten the distance between the crown and the substrate by adjusting the isolation structure, thereby reducing the packaging difficulty of the packaging layer at this position, so that the packaging layer can be more easily closed at this position and obtain a closed area with a sufficient size, reducing the possibility of packaging failure due to etching damage of the packaging layer in other subsequent processes, and can better protect the light-emitting device between the packaging layer and the substrate, avoiding dark spot failure of the light-emitting device due to etching damage, which can help improve the reliability of the display panel and improve the display effect and performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art 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 paying creative labor.

[0052] Figure 1 A schematic plan view of a display panel provided in an embodiment of the present application;

[0053] Figure 2 A schematic diagram of the cross-sectional structure of area A in a display panel provided in one embodiment of the present application;

[0054] Figure 3 for Figure 2 A magnified view of the structure in the middle B area;

[0055] Figure 4 A schematic diagram of the cross-sectional structure of region A in a display panel provided by another embodiment of the present application;

[0056] Figure 5 for Figure 4 A magnified view of the structure of the middle C area;

[0057] Figure 6 A simplified structural diagram of a display device provided in an embodiment of the present application;

[0058] Figure 7 A flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0059] Among them, the reference numerals in the figure are:

[0060] 1. substrate; 2. pixel definition layer; 201. pixel opening; 3. isolation structure; 301. isolation opening; 301a. first opening; 301b. second opening; 301c. third opening; 31. support portion; 311. sub-support portion; 32. crown portion; 321. blocking sub-portion; 322. inclined sub-portion; 323. bottom wall; 4. light-emitting device; 41. first electrode; 42. light-emitting functional layer; 43. second electrode; 5. encapsulation layer; 51. first encapsulation sub-portion; 52. second encapsulation sub-portion; 53. third encapsulation sub-portion; 501. closed area;

[0061] 10. Display panel; 100. Display device; S. Closed chamber; S1. First chamber; S2. Second chamber; S3. Third chamber. DETAILED DESCRIPTION

[0062] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0063] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0064] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0066] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0067] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0069] The term "layer" used in the text may refer to a material portion including an area with a certain thickness. A layer may extend over the entire underlying structure or overlying structure, or may have a range smaller than the range of the underlying or overlying structure. In addition, a layer may be an area of ​​a homogeneous or inhomogeneous continuous structure, the thickness of which is less than the thickness of the continuous structure. For example, a layer may be located between the top surface and the bottom surface of the continuous structure or between any paired lateral planes at the top surface and the bottom surface. A layer may extend laterally, vertically and / or along a tapered surface. A substrate may be a layer, may include one or more layers therein, and / or may have one or more layers located thereon, above it and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductors and a contact layer (forming contacts, interconnects and / or vias therein) and one or more dielectric layers.

[0070] In the process of implementing the present application, the inventors discovered the following problems in the related art: some pixel units have display anomalies, which affect the display effect of the display panel 10 to a certain extent and ultimately affect its performance.

[0071] Based on this, an embodiment of the present application provides a display panel 10 to alleviate or improve the above technical problems at least to a certain extent and improve the reliability of the display panel 10 .

[0072] See also Figure 1-Figure 3 The display panel 10 provided in the embodiment of the present application includes a substrate 1 and an isolation structure 3, wherein the isolation structure 3 is located on one side of the substrate 1, the isolation structure 3 includes a support portion 31 and a crown portion 32, the crown portion 32 is located on the side of the support portion 31 facing away from the substrate 1, and the isolation structure 3 encloses an isolation opening 301.

[0073] The contents of the isolation structure 3 mentioned below are further described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A for reference.

[0074] See also Figure 2 and Figure 3 At least one end of the crown portion 32 close to the isolation opening 301 is inclined toward the position or direction of the substrate 1 relative to the other parts of the crown portion 32 .

[0075] The cross section of the display panel 10, i.e., the cross section in the direction perpendicular to the surface of the substrate 1 of the display panel 10, is a cross section, which can be used to show the internal structure of the display panel 10 and the positional relationship and bonding relationship between the various film layers. Figure 2 and Figure 3The outer edge portion of the crown 32 of the isolation structure 3 is tilted downward relative to the middle area of ​​the crown 32. At this time, the distance between the crown 32 and the substrate 1 is effectively shortened, which helps to reduce the packaging difficulty of the subsequent process at the corresponding isolation opening 301, and can help improve the packaging effect and reliability of the display panel 10, reduce the possibility of display failures due to packaging defects, and make the display panel 10 have better performance.

[0076] See also Figure 2 and Figure 3 In some embodiments, a pixel definition layer 2 is further disposed between the substrate 1 and the isolation structure 3 , and the pixel definition layer 2 is provided with a pixel opening 201 , and the pixel opening 201 is correspondingly disposed and connected to the isolation opening 301 .

[0077] The pixel definition layer 2 is an inorganic layer that can be used to define the pixel range and ensure that each pixel is independent of each other. It can also block water vapor in the substrate 1 and prevent external factors such as water and oxygen from corroding the related film layer located on the side of the pixel definition layer 2 facing away from the substrate 1.

[0078] Since the outer peripheral edge of the crown 32 of the isolation structure 3 is tilted downward relative to the middle area of ​​the crown 32, the minimum distance between the crown 32 and the pixel definition layer 2 (i.e. Figure 3 In this case, the difficulty of sealing the isolation opening 301 in the subsequent process can be reduced. In the process of the encapsulation layer 5, the encapsulation film layers respectively attached to the crown 32 and attached to the isolation opening 301 can be easily contacted and sealed. And as the process of the encapsulation layer 5 continues, the thickness of the film layer of the sealing part gradually increases, which can effectively improve the encapsulation effect of the corresponding isolation opening 301, reduce the possibility of displaying dark spots of the display panel 10 due to encapsulation defects, and improve the display effect of the display panel 10, which helps to improve the reliability of the display panel 10 and make the display panel 10 have better performance.

[0079] See also Figure 2 and Figure 3 , the orthographic projection of the support portion 31 on the base 1 is located within the orthographic projection of the crown portion 32 on the base 1. At this time, the end of the crown portion 32 near the isolation opening 301 can be tilted downward and does not contact the support portion 31.

[0080] Specifically, in the normal cross section of the display panel 10 (refer to the above text for the explanation of the normal cross section), the cross-sectional profile of the portion of the support portion 31 located between two adjacent isolation openings 301 is one of a rectangle, a trapezoid and an inverted trapezoid.

[0081] At least part of the support portion 31 is a conductive structure, especially only one side of the substrate 1. In some embodiments, the support portion 31 is a single-layer structure, and in other embodiments, the support portion 31 can be a multi-layer structure.

[0082] When the support portion 31 is a multi-layer structure, the support portion 31 may include at least two stacked sub-support portions 311. The orthographic projection of the sub-support portion 311 far from the substrate 1 on the substrate 1 is located within the orthographic projection range of the sub-support portion 311 close to the substrate 1 on the substrate 1.

[0083] See also Figure 3 The support portion 31 in the figure is made of two sub-support portions 311 which are overall rectangular structures or regular trapezoidal structures, wherein the sub-support portion 311 near the base 1 is relatively thin, and the sub-support portion 311 near the crown 32 is relatively thick.

[0084] Specifically, the orthographic projection of the sub-support portion 311 closest to the base 1 on the base 1 is located within the range of the orthographic projection of the crown portion 32 on the base 1 .

[0085] In some embodiments, the side wall of the sub-support portion 311 originally connected to the substrate 1 toward the isolation opening 301 is offset toward the side away from the isolation opening 301 relative to the side wall of the sub-support portion 311 close to the substrate 1, thereby making the cross-sectional side wall of the isolation structure 3 present a shape similar to an eaves.

[0086] Of course, in other similar embodiments, the size and projection relationship between the sub-support portions 311 and the crown portions 32 stacked in sequence may also be adaptively adjusted according to actual processing requirements.

[0087] In some embodiments, the sub-support portion 311 and the crown portion 32 may be an integrally formed structure, or may be formed by stacking different materials.

[0088] Specifically, the material of the crown 32 includes metal titanium, which is a titanium metal layer; the material of the sub-support portion 311 attached to the crown 32 includes metal aluminum, which is an aluminum metal layer; the material of the sub-support portion 311 closest to the substrate 1 includes metal molybdenum, which is a molybdenum metal layer.

[0089] It should be noted that the degree of inclination of the crown 32 toward the substrate 1 (or the pixel definition layer 2) can be adjusted according to actual processing needs. In some embodiments, all the isolation openings 301 can be set to have the same inclination angle toward the substrate 1 or the pixel definition layer 2, or some of the isolation openings 301 can be set to have different inclination angles toward the substrate 1 or the pixel definition layer 2; or, all the isolation openings 301 can be set to have the same distance from the substrate 1 or the pixel definition layer 2, or some of the isolation openings 301 can be set to have different distances from the substrate 1 or the pixel definition layer 2, etc.

[0090] In some embodiments, see Figure 2 The isolation opening 301 includes three different types corresponding to different patterning orders, namely a first opening 301a, a second opening 301b and a third opening 301c.

[0091] The minimum distance between the crown 32 corresponding to the first opening 301a and the pixel definition layer 2 is the first spacing, the minimum distance between the crown 32 corresponding to the second opening 301b and the pixel definition layer 2 is the second spacing, and the minimum distance between the crown 32 corresponding to the third opening 301c and the pixel definition layer 2 is the third spacing, wherein the first spacing is not greater than the second spacing, and the second spacing is not greater than the third spacing.

[0092] In some embodiments, the opening shapes corresponding to the first opening 301a, the second opening 301b and the third opening 301c are the same, in which case the first spacing, the second spacing and the third spacing remain consistent; in other similar embodiments, the opening shapes corresponding to the first opening 301a, the second opening 301b and the third opening 301c are different, and the sizes of the first spacing, the second spacing and the third spacing are different, in which case the first spacing < the second spacing < the third spacing.

[0093] Specifically, the first opening 301a, the second opening 301b and the third opening 301c are evenly distributed at different positions of the isolation structure 3 according to a certain rule. Among them, any one or more of the first opening 301a, the second opening 301b and the third opening 301c may be distributed around the first opening 301a. In other words, the types of two adjacent isolation openings 301 may be different, and the inclination amplitude (including the inclination angle and the size of the inclination portion, etc.) of the crown 32 of the isolation structure 3 located between the two adjacent isolation openings 301 toward the side of the pixel definition layer 2 may be the same, or there may be certain differences.

[0094] Therefore, the above-mentioned first spacing can also be understood as the distance between the crown 32 on the side of the first opening 301a corresponding to the isolation structure 3 forming the first opening 301a and the corresponding position of the pixel definition layer 2; similarly, the second spacing can also be understood as the distance between the crown 32 on the side of the second opening 301b corresponding to the isolation structure 3 forming the second opening 301b and the corresponding position of the pixel definition layer 2; the third spacing can also be understood as the distance between the crown 32 on the side of the third opening 301c corresponding to the isolation structure 3 forming the third opening 301c and the corresponding position of the pixel definition layer 2.

[0095] See also Figure 2 The three isolation openings 301 in the figure are the third opening 301c, the second opening 301b and the first opening 301a from left to right. The first spacing formed in the first opening 301a is not greater than the second spacing formed in the second opening 301b, and the second spacing formed in the second opening 301b is not greater than the third spacing formed in the third opening 301c.

[0096] Specifically, in Figure 2 In the figure, the size relationship between the three different spacings formed by the three different isolation openings 301 is: the first spacing<the second spacing<the third spacing.

[0097] Below Figure 3 Taking the structure of the first opening 301 a and the surrounding film layer as an example, the structure of the display panel 10 is further described.

[0098] See also Figure 3 The crown portion 32 in the figure has a blocking sub-portion 321 and an inclined sub-portion 322, wherein the inclined sub-portion 322 is located on a side of the blocking sub-portion 321 close to the isolation opening 301. Specifically, the inclined sub-portion 322 is located on the peripheral side of the blocking sub-portion 321 and is arranged around the blocking sub-portion 321. One end of the crown portion 32 close to the isolation opening 301 is located on a side of the inclined sub-portion 322 facing away from the blocking sub-portion 321.

[0099] In the cross section of the display panel 10 (the cross section is explained in the previous text), the inclined sub-portion 322 has an inclined bottom wall 323, and the angle between the bottom wall 323 and the surface of the substrate 1 is an inclined angle α, see Figure 3 .

[0100] Specifically, the inclined sub-portion 322 and the blocking sub-portion 321 are an integrated structure.

[0101] On the positive cross section of the display panel 10 (refer to the previous text for the explanation of the positive cross section), the cross-sectional profile of the portion of the blocking sub-portion 321 located between two adjacent isolation openings 301 is a rectangle or other approximately rectangular structure; the cross-sectional profile of the portion of the inclined sub-portion 322 located between two adjacent isolation openings 301 is one of a parallelogram, a triangle, and a trapezoid.

[0102] Specifically, the orthographic projection of the blocking sub-portion 321 on the substrate 1 coincides with the orthographic projection of the supporting portion 31 on the substrate 1, and the orthographic projection of the tilting sub-portion 322 on the substrate 1 coincides with the orthographic projection of the supporting portion 31 on the substrate 1. Figure 3 .

[0103] The greater the inclination amplitude of the end of the crown portion 32 close to the isolation opening 301 toward the direction of the substrate 1 , the greater the inclination angle.

[0104] See also Figure 2 and Figure 3 In some embodiments, the isolation opening 301 includes a first opening 301a, a second opening 301b and a third opening 301c, the inclination angle corresponding to the first opening 301a is a first inclination angle, the inclination angle corresponding to the second opening 301b is a second inclination angle, and the inclination angle corresponding to the third opening 301c is a third inclination angle, wherein the first inclination angle is not less than the second inclination angle, and the second inclination angle is not less than the third inclination angle.

[0105] Specifically, the above-mentioned first inclination angle can be understood as the inclination angle of the isolation structure 3 that defines the first opening 301a corresponding to the side of the first opening 301a; similarly, the second spacing can also be understood as the inclination angle of the isolation structure 3 that defines the second opening 301b corresponding to the side of the second opening 301b; the third spacing can also be understood as the inclination angle of the isolation structure 3 that defines the third opening 301c corresponding to the side of the third opening 301c.

[0106] In some embodiments, the opening shapes corresponding to the first opening 301a, the second opening 301b and the third opening 301c are all the same, in which case the first inclination angle, the second inclination angle and the third inclination angle are consistent; in other similar embodiments, when the opening shapes corresponding to the first opening 301a, the second opening 301b and the third opening 301c are not completely consistent, the angle of the first inclination angle formed in the first opening 301a is not less than the angle of the second inclination angle formed in the second opening 301b, and the angle of the second inclination angle formed in the second opening 301b is not less than the angle of the third inclination angle formed in the third opening 301c.

[0107] For details, please refer to Figure 2The relationship between the three different inclination angles formed by the three different isolation openings 301 in the figure can be: the first inclination angle> the second inclination angle> the third inclination angle.

[0108] Specifically, the value range of the first inclination angle can be set to 50° to 89°, and the specific value range can be adjusted according to actual needs. For example, the angle can be any value of 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 89°, etc.

[0109] Similarly, the second inclination angle can be set to a value range of 20° to 50°, and its specific value range can be adjusted according to actual needs. For example, the angle can be any value among 20°, 25°, 30°, 35°, 40°, 45°, 50°, etc.

[0110] Similarly, the value range of the third inclination angle can be set to 0-30°, and its specific value range can be adjusted according to actual needs. For example, the angle can be any value of 0, 5°, 10°, 15°, 20°, 25°, 30°, etc. It should be noted that the angle of the third inclination angle should not be greater than the angle of the second inclination angle. When the angle of the third inclination angle is 0, the crown 32 used to form the third inclination angle is not inclined.

[0111] See also Figure 4 and Figure 5 The display panel 10 provided in the embodiment of the present application further includes a display function layer and an encapsulation layer 5 .

[0112] Specifically, the display function layer is located on the substrate 1 and includes a plurality of light-emitting devices 4 located in corresponding isolation openings 301, the encapsulation layer 5 is located on the side of the isolation structure 3 and the light-emitting device 4 facing away from the substrate 1, and at least part of the area covered by the encapsulation layer 5 on the side of the crown 32 is connected to the area covering the light-emitting device 4 and remains closed.

[0113] In some embodiments, the encapsulation layer 5 can be prepared by chemical vapor deposition (CVD) technology, which can deposit a relatively uniform and dense thin film on the surface of the substrate (i.e., the base 1 having the above-mentioned isolation structure 3 and the light-emitting device 4) through a chemical reaction to achieve encapsulation and protection of the display panel 10 device.

[0114] The encapsulation layer 5 may include at least one of an organic material and an inorganic material.

[0115] The encapsulation layer 5 is used to cover the side of the isolation structure 3 facing away from the substrate 1, and covers the side of the light emitting device 4 facing away from the substrate 1. Each light emitting device 4 is arranged corresponding to the isolation opening 301, and the isolation opening 301 can be used to limit the corresponding light emitting device 4.

[0116] Specifically, the light emitting device 4 is a multi-layer structure, part of its film layer can cover the side of the pixel definition layer 2 facing away from the substrate 1 through the pixel opening 201 , and part of the film layer is located between the pixel opening 201 and the substrate 1 .

[0117] Specifically, when the area of ​​the encapsulation layer 5 covering the side of the crown 32 is connected to the area covering the light emitting device 4 and remains closed, the portion of the encapsulation layer 5 located in the isolation opening 301 can define and form a closed chamber S, see Figure 4 and Figure 5 .

[0118] Specifically, the closed chamber S is formed in the packaging layer 5 and is located outside a side of the isolation structure 3 facing the isolation opening 301 .

[0119] Affected by the shape of the isolation opening 301, when the portion of the encapsulation layer 5 used to cover the side of the crown 32 and the portion covering the light-emitting device 4 gradually grow and thicken, the two will contact and form the above-mentioned closed cavity S. The smaller the distance between the crown 32 and the pixel definition layer 2, the smaller the space between the crown 32 and the pixel definition layer 2 for forming the above-mentioned closed cavity S, and accordingly, the smaller the spatial size of the closed cavity S finally formed.

[0120] The above-mentioned spatial size refers to the measurement of the size of an object or a spatial range in a three-dimensional space (length, width, height). In this embodiment, it is used to describe the size of the space occupied by the closed chamber S or the range of the spatial area occupied by the closed chamber S.

[0121] The closed chamber S corresponding to the first opening 301a is defined as the first chamber S1, the closed chamber S corresponding to the second opening 301b is defined as the second chamber S2, and the closed chamber S corresponding to the third opening 301c is defined as the third chamber S3. The space size of the first chamber S1 is not greater than the space size of the second chamber S2, and the space size of the second chamber S2 is not greater than the space size of the third chamber S3.

[0122] The size relationship among the first opening 301a, the second opening 301b and the third opening 301c is as mentioned above and will not be described again here.

[0123] When the opening shapes corresponding to the first opening 301a, the second opening 301b and the third opening 301c are the same, and under the premise of the same preparation process, the shapes and spatial sizes of the first chamber S1, the second chamber S2 and the third chamber S3 respectively formed in different isolation openings 301 are basically the same (due to the influence of processing technology and errors, there is a possibility of incomplete consistency).

[0124] When the dimensional relationship between the three corresponding different spacings in the first opening 301a, the second opening 301b and the third opening 301c satisfies the following condition: the first spacing < the second spacing < the third spacing, then at this time, the spatial dimension of the above-mentioned first chamber S1 is smaller than the spatial dimension of the second chamber S2, and the spatial dimension of the second chamber S2 is smaller than the spatial dimension of the third chamber S3.

[0125] That is to say, the smaller the spacing formed by the tilted crown portion 32 is, the smaller the spatial size of the corresponding closed chamber S is.

[0126] When the size relationship among the three different inclination angles corresponding to the first opening 301a, the second opening 301b and the third opening 301c satisfies the following conditions: the first inclination angle > the second inclination angle > the third inclination angle, then at this time, the spatial dimension of the above-mentioned first chamber S1 is smaller than the spatial dimension of the second chamber S2, and the spatial dimension of the second chamber S2 is smaller than the spatial dimension of the third chamber S3.

[0127] That is to say, the greater the inclination angle formed by the crown portion 32 after inclination, the smaller the spatial size of the corresponding closed chamber S.

[0128] It should be noted that due to the influence of processing errors, the relationship between the spatial size of the closed chamber S and the spacing and angle between the crown 32 and the pixel definition layer 2 does not necessarily strictly follow a proportional relationship or other mathematical relationships. The above description only represents the size change trend of the closed chamber S.

[0129] In some embodiments, the encapsulation layer 5 includes a first encapsulation sub-portion 51 and a second encapsulation sub-portion 52, the first encapsulation sub-portion 51 covers the side of the crown 32 and is partially located on the side of the crown 32 facing away from the substrate 1; the second encapsulation sub-portion 52 covers the side of the light-emitting device 4 facing away from the substrate 1; the first encapsulation sub-portion 51 and the second encapsulation sub-portion 52 are connected to form a closed area 501.

[0130] See also Figure 5 The closed area 501 is formed in the encapsulation layer 5 and is located on the side of the closed chamber S facing away from the isolation structure 3, which is indicated by a dotted line in the figure. One end of the closed area 501 points to the closed chamber S, and the other end corresponds to the connection portion of the first encapsulation sub-section 51 and the second encapsulation sub-section 52 and points to the side away from the isolation structure 3. The distance between the two ends is the width of the closed area 501.

[0131] One end of the first encapsulating sub-portion 51 is connected to the side of the crown portion 32, and the other end extends toward the side of the crown portion 32 facing away from the base 1 to cover a portion of the inclined sub-portion 322; or, in other embodiments, the first encapsulating sub-portion 51 may also be located above the blocking sub-portion 321 and cover a portion of the blocking sub-portion 321. There is a gap between the first encapsulating sub-portion 51 and the blocking sub-portion 321.

[0132] Affected by the shape of the isolation opening 301, when the first encapsulation sub-portion 51 and the second encapsulation sub-portion 52 gradually grow and thicken, the two contact and form the above-mentioned closed area 501. The smaller the distance between the crown portion 32 and the pixel definition layer 2, the longer the first encapsulation sub-portion 51 and the second encapsulation sub-portion 52 contact and form the closed area 501 during the preparation process of the encapsulation layer 5, and the greater the width of the closed area 501 obtained.

[0133] The width of the closed area 501 corresponding to the first opening 301a is defined as the first width, the width of the closed area 501 corresponding to the second opening 301b is defined as the second width, and the width of the closed area 501 corresponding to the third opening 301c is defined as the third width; wherein the first width is not less than the second width, and the second width is not less than the third width.

[0134] The size relationship among the first opening 301a, the second opening 301b and the third opening 301c is as mentioned above and will not be described again here.

[0135] When the opening shapes corresponding to the first opening 301a, the second opening 301b and the third opening 301c are the same, and under the premise of the same preparation process, the sizes of the first width, the second width and the third width respectively formed in the different isolation openings 301 are basically the same (due to the influence of processing technology and errors, there is a possibility of incomplete consistency).

[0136] When the dimensional relationship between the three corresponding different spacings in the first opening 301a, the second opening 301b and the third opening 301c satisfies the following condition: the first spacing < the second spacing < the third spacing, the first width is greater than the second width, and the second width is greater than the third width.

[0137] That is to say, the smaller the spacing formed after the crown portion 32 is tilted, the larger the width of the corresponding closed area 501 will be.

[0138] When the size relationship between the three corresponding different inclination angles in the first opening 301a, the second opening 301b and the third opening 301c satisfies the following condition: first inclination angle>second inclination angle>third inclination angle, the first width is greater than the second width, and the second width is greater than the third width.

[0139] That is to say, the greater the inclination angle formed after the crown portion 32 is inclined, the greater the width of the corresponding closed area 501 will be.

[0140] It should be noted that due to the influence of processing errors, the relationship between the width of the closed area 501 and the spacing and angle between the crown 32 and the pixel definition layer 2 may not strictly follow a proportional relationship or other mathematical relationships. The above description only represents the variation trend of the width of the closed area 501.

[0141] See also Figure 5 In order to ensure that the encapsulation layer 5 is a continuous film layer structure and has a better encapsulation effect, in some embodiments, the above-mentioned encapsulation layer 5 also includes a third encapsulation sub-portion 53, the third encapsulation sub-portion 53 covers the side wall of the isolation structure 3 facing the isolation opening 301, and the third encapsulation sub-portion 53 connects the first encapsulation sub-portion 51 and the second encapsulation sub-portion 52.

[0142] The third packaging sub-section 53 can be a continuous film layer structure. In this case, the first packaging sub-section 51, the second packaging sub-section 52 and the third packaging sub-section 53 are sequentially connected and enclosed to form the above-mentioned closed chamber S, and the closed area 501 is formed in the area where the first packaging sub-section 51 and the second packaging sub-section 52 are directly connected.

[0143] See also Figure 5 The light-emitting device 4 includes a first electrode 41, a light-emitting functional layer 42, and a second electrode 43 which are sequentially stacked on the substrate 1; the light-emitting functional layer 42 and the second electrode 43 of each light-emitting device 4 are located in the corresponding isolation opening 301, the second electrode 43 is located on the side of the light-emitting functional layer 42 facing away from the substrate 1 and covers the light-emitting functional layer 42, the first electrode 41 of each light-emitting device 4 is located on the substrate 1 and on the side of the pixel definition layer 2 facing the substrate 1, and the first electrode 41 is exposed from the corresponding pixel opening 201 and contacts the light-emitting functional layer 42.

[0144] In some embodiments, the first electrode 41 is one of an anode and a cathode, and the second electrode 43 is the other. The second electrode 43 located in the isolation opening 301 needs to be connected to the conductive isolation structure 3 .

[0145] Specifically, the sub-support portion 311 of the isolation structure 3 near the substrate 1 is configured as a conductive structure, and the second electrode 43 overlaps the side wall of the sub-support portion 311 facing the isolation opening 301 .

[0146] The light-emitting functional layer 42 can be made of organic small molecule light-emitting materials, complex light-emitting materials, and high molecular polymers. Different light-emitting functional layers 42 can be used to emit light of different colors. Generally speaking, the light-emitting functional layer 42 includes three types and is used to emit red, green, and blue light respectively under power-on conditions.

[0147] Specifically, the light-emitting functional layer 42 comprises a first light-emitting functional layer, a second light-emitting functional layer and a third light-emitting functional layer with different light-emitting colors. The wavelength of the light emitted by the first light-emitting functional layer is smaller than the wavelength of the light emitted by the second light-emitting functional layer, and the wavelength of the light emitted by the second light-emitting functional layer is smaller than the wavelength of the light emitted by the third light-emitting functional layer.

[0148] Specifically, the emergent light of the first light-emitting functional layer is blue light, the emergent light of the second light-emitting functional layer is green light, and the emergent light of the third light-emitting functional layer is red light.

[0149] Wherein, at least one of the first light-emitting functional layer, the second light-emitting functional layer and the third light-emitting functional layer is disposed in any isolation opening 301 .

[0150] See also Figure 4 and Figure 5 , only one of the first light-emitting functional layer, the second light-emitting functional layer and the third light-emitting functional layer is provided in each of the isolation openings 301. When preparing the light-emitting devices 4 in each isolation opening 301, it is only necessary to ensure that the light-emitting devices 4 in the same type of isolation openings 301 have the same color of emitted light under power-on conditions.

[0151] In some embodiments, the first opening 301a is provided with a first light-emitting functional layer, the second opening 301b is provided with a second light-emitting functional layer, and the third opening 301c is provided with a third light-emitting functional layer. Of course, the corresponding relationship between each isolation opening 301 and each light-emitting functional layer 42 can be adaptively adjusted according to actual processing needs, and this embodiment only gives one example.

[0152] When preparing the display panel 10, the light-emitting device 4 and the encapsulation layer 5 can be prepared in the order of the first light-emitting functional layer, the second light-emitting functional layer and the third light-emitting functional layer, so that the closed area 501 of the encapsulation layer 5 prepared by the front process is larger, thereby reducing the possibility that the encapsulation layer 5 is damaged by the etching process in the back process and fails. Once the encapsulation layer 5 fails, the etching process in the back process will etch the light-emitting device 4 that has been prepared and the exposed part of the isolation structure 3 and produce dark spot failures, affecting the yield and reliability of the display panel 10.

[0153] In this embodiment or other similar embodiments, the side of the encapsulation layer 5 facing away from the substrate 1 is further provided with at least one of a planarization layer, an organic encapsulation film layer, an inorganic encapsulation film layer, a touch layer, an organic adhesive layer, and a cover plate.

[0154] Taking the planarization layer as an example, the material of the planarization layer may include at least one of an organic material and an inorganic material, for example, an organic polymer (such as polyimide, acrylic resin, etc.) or an inorganic material (such as silicon oxide, silicon nitride, etc.).

[0155] The planarization layer made of organic material can be prepared by IJP (Ink-Jet Printing) and other technologies. Part of the planarization layer can flow into the isolation opening 301 and improve the flatness of the display panel 10 by filling the isolation opening 301, while also providing certain protection for the related film layers located therebelow.

[0156] It is understandable that the display panel 10 provided in the embodiment of the present application can shorten the distance between the end of the crown 32 near the isolation opening 301 and the substrate 1 and the light-emitting device 4 located on the substrate 1 by adjusting the crown 32 of the isolation structure 3, thereby reducing the difficulty of sealing during the preparation of the encapsulation layer 5. Achieving a good sealing effect in the pre-process helps to improve the preparation yield of the display panel 10, reduce the possibility of pixel dark spots caused by etching damage during the preparation of the display panel 10, help improve the reliability of the display panel 10, and improve the display effect and performance of the display panel 10.

[0157] In another embodiment of the present application, a display device 100 is further provided. Figure 6 The display device 100 includes any one of the display panels 10 described above.

[0158] The display device 100 provided in this embodiment can be a product or component with a display function, such as a mobile phone, a notebook, a tablet computer, a smart watch, a smart bracelet, a navigator, a display, a personal digital assistant (PDA), etc. Since the display panel 10 in the display device 100 has the beneficial effects of any one or more of the above display panels 10, the specific effects refer to the specific description in the above embodiments, which will not be repeated here.

[0159] In yet another embodiment of the present application, a method for preparing a display panel 10 is provided, comprising:

[0160] Providing a substrate 1;

[0161] An isolation structure 3 is prepared on one side of the substrate 1, and the isolation structure 3 encloses an isolation opening 301;

[0162] The isolation structure 3 includes a support portion 31 and a crown portion 32 . The crown portion 32 is located on a side of the support portion 31 facing away from the substrate 1 . At least one end of the crown portion 32 close to the isolation opening 301 is inclined toward the substrate 1 .

[0163] In the method for preparing the display panel 10 provided in the embodiment of the present application, by setting the end of the crown 32 close to the isolation opening 301 to be inclined toward the direction where the substrate 1 is located, the distance between the crown 32 and the substrate 1 can be shortened. Since the distance between the crown 32 and the substrate 1 is shortened, the difficulty of sealing the encapsulation layer 5 at this position can be greatly reduced when preparing the encapsulation layer 5, which helps to improve the reliability of the display panel 10, reduce failures caused by encapsulation defects, and make the display panel 10 have better performance.

[0164] In some embodiments, after the isolation structure 3 is prepared on one side of the substrate 1 and the isolation structure 3 encloses the isolation opening 301, the method further includes:

[0165] A light emitting device 4 is prepared in the isolation opening 301 , and a packaging layer 5 covering the isolation structure 3 is prepared on the side of the light emitting device 4 facing away from the substrate 1 .

[0166] At least one light emitting device 4 is disposed in any isolation opening 301 .

[0167] Specifically, the isolation openings 301 are arranged in one-to-one correspondence with the light emitting devices 4. The isolation openings 301 include a first opening 301a, a second opening 301b and a third opening 301c.

[0168] The light emitting device 4 is prepared in the isolation opening 301, and the encapsulation layer 5 covering the isolation structure 3 is prepared on the side of the light emitting device 4 facing away from the substrate 1, including:

[0169] A display material layer is prepared on the isolation structure 3, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate 1, and the encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device 4 located in the first opening 301a, and an encapsulation layer 5 covering the first opening 301a;

[0170] A display material layer is prepared on the isolation structure 3, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate 1, and the encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device 4 located in the second opening 301b, and an encapsulation layer 5 covering the second opening 301b;

[0171] A display material layer is prepared on the isolation structure 3, and an encapsulation material layer is formed on the side of the display material layer facing away from the substrate 1. The encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device 4 located in the third opening 301c and an encapsulation layer 5 covering the third opening 301c.

[0172] Specifically, when preparing the light emitting device 4 located in the first opening 301a, the following steps are included:

[0173] After the display material layer and the encapsulation layer 5 are prepared on the display panel 10 by evaporation and CVD sedimentation, the first opening 301a and the encapsulation layer 5 covering the peripheral isolation structure 3 are covered with photoresist for protection, and then the encapsulation layer 5 and the display material layer that are not covered by the photoresist are removed by etching in a graphical manner, and then the photoresist is removed to prepare the light-emitting device 4 in the first opening 301a and the encapsulation layer 5 covering the light-emitting device 4 and the first opening 301a.

[0174] The above process is repeated to prepare the light emitting device 4 and the encapsulation layer 5 in the second opening 301 b and the third opening 301 c respectively.

[0175] Please refer to the flowchart of the manufacturing method of the display panel 10 provided in the embodiment of the present application. Figure 7 , the preparation method comprises:

[0176] Step S1, preparing an isolation structure 3 on one side of the substrate 1, the isolation structure 3 encloses an isolation opening 301, the isolation structure 3 includes a support portion 31 and a crown portion 32, the crown portion 32 is located on the side of the support portion 31 facing away from the substrate 1, and at least one end of the crown portion 32 close to the isolation opening 301 is inclined toward the substrate 1 to shorten the distance between the crown portion 32 and the substrate 1;

[0177] Step S2 , preparing a light emitting device 4 in the isolation opening 301 , and preparing a packaging layer 5 covering the isolation structure 3 on the side of the light emitting device 4 facing away from the substrate 1 .

[0178] The light emitting device 4 comprises a first electrode 41, a light emitting functional layer 42 and a second electrode 43, wherein the light emitting functional layer 42 comprises a first light emitting functional layer, a second light emitting functional layer and a third light emitting functional layer having different light emitting colors.

[0179] In some embodiments, the wavelength of light emitted from the first light-emitting functional layer is smaller than the wavelength of light emitted from the second light-emitting functional layer, and the wavelength of light emitted from the second light-emitting functional layer is smaller than the wavelength of light emitted from the third light-emitting functional layer.

[0180] Specifically, the emergent light of the first light-emitting functional layer is blue light, the emergent light of the second light-emitting functional layer is green light, and the emergent light of the third light-emitting functional layer is red light.

[0181] Accordingly, the light emitting device 4 also includes a first light emitting device, a second light emitting device and a third light emitting device with different light emitting colors. When preparing the light emitting devices 4 in different isolation openings 301, light emitting devices 4 with different light emitting colors can be selected in sequence for preparation according to design requirements.

[0182] In some embodiments, step S2 includes:

[0183] Step S21, preparing a first display material layer on the isolation structure 3, forming an encapsulation material layer on the side of the first display material layer facing away from the substrate 1, etching and patterning the encapsulation material layer and the first display material layer to form a first light-emitting device located in the first opening 301a, and an encapsulation layer 5 covering the first opening 301a;

[0184] Step S22, preparing a second display material layer on the isolation structure 3, forming an encapsulation material layer on the side of the second display material layer facing away from the substrate 1, etching and patterning the encapsulation material layer and the second display material layer to form a second light-emitting device located in the second opening 301b, and an encapsulation layer 5 covering the second opening 301b;

[0185] Step S23, prepare a third display material layer on the isolation structure 3, form an encapsulation material layer on the side of the third display material layer facing away from the substrate 1, etch and pattern the encapsulation material layer and the third display material layer to form a third light-emitting device located in the third opening 301c, and an encapsulation layer 5 covering the third opening 301c.

[0186] It should be noted that the preparation order of the light emitting devices 4 in each isolation opening 301 in the above step S2 is determined according to the distance between the crown 32 and the substrate 1 described above. As the distance increases, the light emitting devices 4 are prepared in sequence in the corresponding isolation openings 301.

[0187] The present preparation method can be used to prepare the display panel 10 provided in the above embodiments. The other structures of the display panel 10 can be found in the above description and will not be described again.

[0188] It is understandable that the method for preparing the display panel 10 provided in the embodiment of the present application can reduce the difficulty of encapsulation of the encapsulation layer 5 by shortening the distance between the crown 32 and the substrate 1, improve the encapsulation effect of the encapsulation layer 5, and thus reduce the possibility of encapsulation failure of the encapsulation layer 5 due to etching damage in other subsequent processes. The preparation method can better protect the light-emitting device 4 located between the encapsulation layer 5 and the substrate 1, avoid dark spot failure of the light-emitting device 4 due to etching damage, and can help improve the reliability of the prepared display panel 10, and improve the display effect and performance of the display panel 10.

[0189] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: Base (1); an isolation structure (3), located on one side of the base (1), the isolation structure (3) comprising a support portion (31) and a crown portion (32), the crown portion (32) being located on a side of the support portion (31) facing away from the base (1), and the isolation structure (3) enclosing an isolation opening (301); Wherein, at least one end of the crown portion (32) close to the isolation opening (301) is inclined toward the base (1).

2. The display panel according to claim 1, characterized in that: A pixel definition layer (2) is further provided between the substrate (1) and the isolation structure (3), the pixel definition layer (2) is provided with a pixel opening (201), and the pixel opening (201) is arranged correspondingly to and connected with the isolation opening (301); The isolation opening (301) comprises a first opening (301a), a second opening (301b) and a third opening (301c); the minimum distance between the crown portion (32) corresponding to the first opening (301a) and the pixel definition layer (2) is a first spacing; the minimum distance between the crown portion (32) corresponding to the second opening (301b) and the pixel definition layer (2) is a second spacing; and the minimum distance between the crown portion (32) corresponding to the third opening (301c) and the pixel definition layer (2) is a third spacing; The first spacing is not greater than the second spacing, and the second spacing is not greater than the third spacing.

3. The display panel according to claim 1, characterized in that: The crown portion (32) comprises a blocking sub-portion (321) and an inclined sub-portion (322), wherein the inclined sub-portion (322) is located on a side of the blocking sub-portion (321) close to the isolation opening (301); Preferably, the inclined sub-portion (322) and the blocking sub-portion (321) are an integral structure, and the inclined sub-portion (322) is arranged around the blocking sub-portion (321).

4. The display panel according to claim 3, characterized in that: On the front cross section of the display panel (10), the inclined sub-portion (322) has an inclined bottom wall (323), and the angle between the bottom wall (323) and the surface where the base (1) is located is an inclined angle; The isolation opening (301) comprises a first opening (301a), a second opening (301b) and a third opening (301c), the inclination angle corresponding to the first opening (301a) is a first inclination angle, the inclination angle corresponding to the second opening (301b) is a second inclination angle, and the inclination angle corresponding to the third opening (301c) is a third inclination angle; Wherein, the first inclination angle is not less than the second inclination angle, and the second inclination angle is not less than the third inclination angle.

5. The display panel according to claim 4, characterized in that: The first inclination angle is 50° to 89°, the second inclination angle is 20° to 50°, and the third inclination angle is 0° to 30°.

6. The display panel according to claim 2 or 4, characterized in that: The display panel (10) further comprises: A display function layer, located on the substrate (1) and comprising a plurality of light-emitting devices (4) located in corresponding isolation openings (301); The encapsulation layer (5) is located on the side of the isolation structure (3) and the light-emitting device (4) facing away from the substrate (1), and at least part of the encapsulation layer (5) covering the side of the crown (32) is closed to the part covering the light-emitting device (4).

7. The display panel according to claim 6, characterized in that: The encapsulation layer (5) defines a closed chamber (S) on a side of the isolation structure (3) facing the isolation opening (301); Preferably, the closed chamber (S) corresponding to the first opening (301a) is the first chamber (S1), the closed chamber (S) corresponding to the second opening (301b) is the second chamber (S2), and the closed chamber (S) corresponding to the third opening (301c) is the third chamber (S3), wherein the spatial dimension of the first chamber (S1) is not larger than the spatial dimension of the second chamber (S2), and the spatial dimension of the second chamber (S2) is not larger than the spatial dimension of the third chamber (S3).

8. The display panel according to claim 6, characterized in that: The encapsulation layer (5) comprises: A first encapsulation sub-portion (51), covering the side surface of the crown portion (32) and partially located on a side of the crown portion (32) facing away from the base (1); a second encapsulation sub-portion (52), covering a side of the light-emitting device (4) facing away from the substrate (1); the first encapsulation sub-portion (51) and the second encapsulation sub-portion (52) are connected to form a closed area (501); the width of the closed area (501) corresponding to the first opening (301a) is a first width, the width of the closed area (501) corresponding to the second opening (301b) is a second width, and the width of the closed area (501) corresponding to the third opening (301c) is a third width; The first width is not less than the second width, and the second width is not less than the third width.

9. The display panel according to claim 8, characterized in that: The encapsulation layer (5) further comprises a third encapsulation sub-portion (53), wherein the third encapsulation sub-portion (53) covers the side wall of the isolation structure (3) facing the isolation opening (301), and the third encapsulation sub-portion (53) connects the first encapsulation sub-portion (51) and the second encapsulation sub-portion (52).

10. The display panel according to claim 6, characterized in that: The light-emitting device (4) comprises a first electrode (41), a light-emitting functional layer (42) and a second electrode (43) which are sequentially stacked on the substrate (1).

11. The display panel according to claim 10, characterized in that: The light-emitting functional layer (42) comprises a first light-emitting functional layer, a second light-emitting functional layer and a third light-emitting functional layer, which emit light of different colors; Wherein, at least one of the first light-emitting functional layer, the second light-emitting functional layer and the third light-emitting functional layer is disposed in any of the isolation openings (301).

12. The display panel according to claim 11, characterized in that: The wavelength of the light emitted by the first light-emitting functional layer is smaller than the wavelength of the light emitted by the second light-emitting functional layer, and the wavelength of the light emitted by the second light-emitting functional layer is smaller than the wavelength of the light emitted by the third light-emitting functional layer; Preferably, the emergent light of the first light-emitting functional layer is blue light, the emergent light of the second light-emitting functional layer is green light, and the emergent light of the third light-emitting functional layer is red light.

13. The display panel according to claim 10, characterized in that: The second electrode (43) overlaps the side surface of the isolation structure (3) at one end close to the substrate (1).

14. The display panel according to claim 1, characterized in that: The orthographic projection of the support portion (31) on the base (1) is located within the orthographic projection of the crown portion (32) on the base (1); Preferably, the support portion (31) comprises at least two superimposed sub-support portions (311), and an orthographic projection of the sub-support portion (311) farther from the substrate (1) on the substrate (1) is located within the range of an orthographic projection of the sub-support portion (311) closer to the substrate (1) on the substrate (1); Preferably, the orthographic projection of the sub-support portion (311) closest to the base (1) on the base (1) is located within the range of the orthographic projection of the crown portion (32) on the base (1); Preferably, in the normal cross section of the display panel (10), the cross-sectional profile of the portion of the support portion (31) located between two adjacent isolation openings (301) is one of a rectangle, a trapezoid and an inverted trapezoid.

15. A display device, characterized in that: A display panel (10) comprising any one of claims 1 to 14.

16. A method for preparing a display panel, characterized in that: include: Providing a substrate (1); An isolation structure (3) is prepared on one side of the substrate (1), wherein the isolation structure (3) encloses an isolation opening (301); The isolation structure (3) comprises a support portion (31) and a crown portion (32), wherein the crown portion (32) is located on a side of the support portion (31) facing away from the base (1), and at least a portion of the crown portion (32) is inclined toward the base (1) at one end close to the isolation opening (301).

17. The method for manufacturing a display panel according to claim 16, characterized in that: After the step of preparing an isolation structure (3) on one side of the substrate (1) and enclosing the isolation structure (3) to form an isolation opening (301), the method further comprises: A light-emitting device (4) is prepared in the isolation opening (301), and a packaging layer (5) covering the isolation structure (3) is prepared on the side of the light-emitting device (4) facing away from the substrate (1).

18. The method for preparing a display panel according to claim 17, characterized in that: The isolation opening (301) includes a first opening (301a), a second opening (301b) and a third opening (301c); The method of preparing a light-emitting device (4) in the isolation opening (301), and preparing an encapsulation layer (5) covering the isolation structure (3) on a side of the light-emitting device (4) facing away from the substrate (1), comprises: Preparing a display material layer on the isolation structure (3), forming an encapsulation material layer on the side of the display material layer facing away from the substrate (1), etching and patterning the encapsulation material layer and the display material layer to form a light-emitting device (4) located in the first opening (301a), and an encapsulation layer (5) covering the first opening (301a); Preparing a display material layer on the isolation structure (3), forming an encapsulation material layer on the side of the display material layer facing away from the substrate (1), etching and patterning the encapsulation material layer and the display material layer to form a light-emitting device (4) located in the second opening (301b), and an encapsulation layer (5) covering the second opening (301b); A display material layer is prepared on the isolation structure (3), an encapsulation material layer is formed on the side of the display material layer facing away from the substrate (1), and the encapsulation material layer and the display material layer are etched and patterned to form a light-emitting device (4) located in the third opening (301c), and an encapsulation layer (5) covering the third opening (301c).

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