Display panel and display device

Abstract

The application relates to the technical field of display, and particularly provides a display panel and a display device. The display panel comprises a substrate, an isolation structure, a pixel definition layer and a light-emitting functional layer. The isolation structure is located on the substrate and comprises a support part and a crown part located on the side of the support part away from the substrate. An isolation opening is provided on the isolation structure and penetrates through the support part and the crown part. The pixel definition layer is located between the substrate and the isolation structure. The pixel definition layer is provided with a pixel opening. The orthographic projection of the pixel opening on the substrate is located within the orthographic projection range of the isolation opening on the substrate. Part of the light-emitting functional layer covers the surface of the side of the pixel definition layer away from the substrate and forms a thinning area. At least part of the orthographic projection of the thinning area on the substrate surrounds the orthographic projection of the pixel opening on the substrate. The distance between the orthographic projection of the edge of the crown part on the substrate close to the isolation opening and the orthographic projection of the edge of the pixel opening on the substrate is a first length. The distance between the orthographic projection of the edge of the crown part on the substrate and the orthographic projection of the edge of the side of the thinning area close to the pixel opening on the substrate is a second length. The first length is not less than the second length.

Description

TECHNICAL FIELD

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

[0002] An organic light emitting diode (OLED) display panel is a display device that utilizes the self-luminous principle of organic light emitting materials to realize display; it has the advantages of fast response speed, high brightness, full view angle, and the like, and thus becomes a type of display panel with great competitiveness and good development prospects.

[0003] Current electronic display products are limited by the design of their own structures and face the demand for further improving display effects. SUMMARY

[0004] The present application aims to at least partially solve one of the technical problems in the related art.

[0005] To this end, the present application provides a display panel and a display device to improve the display effect of the display panel.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: a display panel is provided, comprising a substrate, an isolation structure, a pixel definition layer, and a light emitting functional layer; the isolation structure is located on 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 away from the substrate; an isolation opening is formed in the isolation structure; the isolation opening is enclosed by the support portion and the crown portion; the pixel definition layer is located between the substrate and the isolation structure; the pixel definition layer is provided with a pixel opening; the orthographic projection of the pixel opening on the substrate is located within the orthographic projection range of the isolation opening on the substrate; the light emitting functional layer covers the pixel opening and at least partially covers the surface of the side of the pixel definition layer away from the substrate; the light emitting functional layer comprises a thinning region; the thinning region is located on the side of the pixel definition layer away from the substrate; the orthographic projection of the thinning region on the substrate at least partially surrounds the orthographic projection of the pixel opening on the substrate.

[0007] The distance between the orthographic projection of the edge of the crown portion close to the isolation opening on the substrate and the orthographic projection of the edge of the pixel opening on the substrate is a first length; the distance between the orthographic projection of the edge of the crown portion close to the isolation opening on the substrate and the orthographic projection of the edge of the side of the thinning region close to the pixel opening on the substrate is a second length; the first length is not less than the second length.

[0008] Optionally, the display panel further comprises an encapsulation layer, the encapsulation layer comprises a first covering portion and a connecting portion, the first covering portion is located on a side of the isolation structure away from the substrate, and the first covering portion is in contact with the crown portion near an edge of the isolation opening through the connecting portion, and at least part of the connecting portion protrudes towards the isolation opening relative to the crown portion.

[0009] Optionally, the encapsulation layer further comprises a second covering portion, and the second covering portion covers at least part of the light-emitting functional layer.

[0010] Optionally, the second covering portion further covers at least part of the support portion near a circumferential side of the isolation opening.

[0011] Optionally, the second covering portion further covers at least part of a surface of the crown portion on a side close to the substrate.

[0012] Optionally, a projection of the connecting portion on the substrate at least partially overlaps a projection of the thinning region on the substrate, and a projection of an edge of the thinning region on a side close to the pixel opening on the substrate is located outside a projection range of the connecting portion on the substrate.

[0013] Optionally, a projection of the connecting portion on the substrate is located within a projection of the thinning region on the substrate.

[0014] Optionally, the first covering portion has a first thickness, and the second length is not less than half of the first thickness.

[0015] Optionally, the second length is not greater than the first thickness.

[0016] Optionally, the first length and the second length satisfy the relationship L1≥max[X*H1, L2], where L1 is the first length, L2 is the second length, H1 is the first thickness, X is a thickness coefficient, and the thickness coefficient X has a value range of 0.5-1.0.

[0017] Optionally, the first thickness is 0.6 μm-2.0 μm.

[0018] Optionally, the isolation structure has a second thickness, and the second length is positively correlated with the second thickness.

[0019] Optionally, a ratio of the second length to the second thickness has a value range of 0.577-2.246.

[0020] Optionally, the ratio of the second length to the second thickness is not more than a tangent value of an evaporation angle of the light-emitting functional layer.

[0021] Optionally, a ratio of the second length to the second thickness is a tangent value of an evaporation angle of the light-emitting functional layer.

[0022] Optionally, the second thickness is 0.45 μm to 1.5 μm.

[0023] Optionally, the second thickness is 0.8 μm.

[0024] Optionally, a normal projection of the thinning region on the substrate is partially overlapped with a normal projection of the crown portion on the substrate near the isolation opening.

[0025] A normal projection of the thinning region on the substrate is spaced apart from a normal projection of the support portion on the substrate near the isolation opening.

[0026] Optionally, the light-emitting functional layer further comprises a flat region, the flat region is located on a side of the pixel definition layer away from the substrate, the flat region is connected with the thinning region and the flat region is located on a side of the thinning region facing the pixel opening.

[0027] Optionally, a normal projection of the support portion on the substrate is located within a normal projection of the crown portion on the substrate.

[0028] Optionally, the support portion comprises at least two stacked sub-support portions, a normal projection of the sub-support portion far from the substrate on the substrate is located within a normal projection of the sub-support portion near the substrate on the substrate.

[0029] Optionally, a normal projection of the sub-support portion near the substrate on the substrate is located within a normal projection of the crown portion on the substrate. Optionally, a side of the support portion near the isolation opening facing the substrate is a first end surface, a spacing between a normal projection of an edge of the first end surface on the substrate and a normal projection of an edge of the crown portion on the substrate is a third length, the third length is not greater than 0.8 μm.

[0030] Optionally, the third length is in a range of 0.3 μm to 0.8 μm.

[0031] Optionally, in a cross-sectional direction perpendicular to the substrate, the flat region in the isolation opening comprises oppositely arranged first and second flat regions, the first and second flat regions are respectively located on two sides of the pixel opening, and a length of the first flat region is greater than a length of the second flat region.

[0032] The sidewall of the isolation structure corresponding to the first flat area is a first sidewall, and the sidewall of the isolation structure corresponding to the second flat area is a second sidewall, the third length corresponding to the first sidewall is greater than the third length corresponding to the second sidewall.

[0033] Optionally, the light-emitting functional layer has first, second and third light-emitting functional layers with different light-emitting colors, the wavelength of light emitted by the first light-emitting functional layer is less than the wavelength of light emitted by the second light-emitting functional layer, and the wavelength of light emitted by the second light-emitting functional layer is less than the wavelength of light emitted by the third light-emitting functional layer.

[0034] The isolation opening has any one of the first, second and third light-emitting functional layers.

[0035] Optionally, the distance between the orthogonal projection of the first end face edge on the substrate and the orthogonal projection of the pixel opening edge on the substrate is a fourth length, and the fourth length is the sum of the first length and the third length.

[0036] The fourth length in the isolation opening with the first light-emitting functional layer is less than the fourth length in the isolation opening with the second light-emitting functional layer.

[0037] The fourth length in the isolation opening with the second light-emitting functional layer is less than the fourth length in the isolation opening with the third light-emitting functional layer.

[0038] The present application also provides a display device, which comprises the display panel described in any one of the above.

[0039] In the embodiments provided in the present application, the display device has the display panel described above, and thus has at least the advantages of the display panel described above. For specific effects, refer to the above description, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0041] Figure 1 The display panel provided in the embodiments of the present application is shown in a plan view.

[0042] Figure 2A first cross-sectional structure schematic diagram of an A region in a display panel provided by an embodiment of the present application;

[0043] Figure 3 A second cross-sectional structure schematic diagram of the A region in the display panel provided by the embodiment of the present application;

[0044] Figure 4 A third cross-sectional structure schematic diagram of the A region in the display panel provided by the embodiment of the present application;

[0045] Figure 5 A structure of a B region in the display panel is enlarged; Figure 4 A structure of the B region in the display panel is enlarged;

[0046] Figure 6 A deposition direction schematic diagram of the display panel provided by the embodiment of the present application;

[0047] Figure 7 A deposition direction schematic diagram of the display panel provided by the embodiment of the present application; Figure 6 A deposition direction schematic diagram of the display panel provided by the embodiment of the present application;

[0048] Figure 8 A deposition direction schematic diagram of the display panel provided by the embodiment of the present application; Figure 6 A deposition direction schematic diagram of the display panel provided by the embodiment of the present application;

[0049] Figure 9 A structure diagram of the display device provided by the embodiment of the present application.

[0050] In the drawings, various reference signs represent:

[0051] 1, substrate; 2, isolation structure; 201, isolation opening; 202, first side wall; 203, second side wall; 21, support portion; 211, first end surface; 22, crown portion; 3, pixel definition layer; 301, pixel opening; 4, light emitting functional layer; 41, thinning region; 42, flat region; 421, first flat region; 422, second flat region; 5, encapsulation layer; 51, first covering portion; 52, connecting portion; 53, second covering portion; 10, display panel; 100, display device. DETAILED DESCRIPTION

[0052] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0053] 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.

[0054] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0056] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0058] In this application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present application. Exemplary expressions of the above terms do not necessarily refer to the same embodiment or example in this specification. Moreover, the described specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, different embodiments or examples described in this specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0059] An isolation structure is arranged in the display panel, which can be used to isolate some functional film layers in adjacent light emitting units (also referred to as light emitting devices), ensure that adjacent light emitting units do not interfere with each other, and help improve the display effect of the display panel. However, the above-mentioned isolation structure will also affect the light emitting performance of the light emitting unit. In the process of implementing the present application, the inventors found that the related art has the following problems: when the size of the light emitting unit isolated by the isolation structure is too small, the light emitting effect of the light emitting unit is poor; but if the size of the light emitting unit isolated by the isolation structure is too large, it will affect the display precision and display effect of the display panel, resulting in poor final display quality.

[0060] Therefore, the embodiments of the present application provide a display panel 10, which comprises a substrate 1, an isolation structure 2, a pixel definition layer 3 and a light emitting functional layer 4. The isolation structure 2 is located on the substrate 1, and the isolation structure 2 comprises a support part 21 and a crown part 22. The crown part 22 is located on the side of the support part 21 away from the substrate 1. An isolation opening 201 is arranged on the isolation structure 2, and the isolation opening 201 is enclosed by the support part 21 and the crown part 22. The pixel definition layer 3 is located between the substrate 1 and the isolation structure 2. A pixel opening 301 is arranged at the position opposite to the isolation opening 201 of the pixel definition layer 3. The orthographic projection of the pixel opening 301 on the substrate 1 is located within the orthographic projection range of the isolation opening 201 on the substrate 1. The isolation opening 201 and the pixel opening 301 are in communication. The light emitting functional layer 4 covers the pixel opening 301 and at least partially covers the side of the pixel definition layer 3 away from the substrate 1. The light emitting functional layer 4 comprises a thinning area 41 located on the side of the pixel definition layer 3 away from the substrate 1. The orthographic projection of the thinning area 41 on the substrate 1 at least partially surrounds the orthographic projection of the pixel opening 301 on the substrate 1.

[0061] The distance between the orthographic projection of the edge of the crown portion 22 close to the isolation opening 201 on the substrate 1 and the orthographic projection of the edge of the pixel opening 301 on the substrate 1 is a first length, and the distance between the orthographic projection of the edge of the crown portion 22 close to the isolation opening 201 on the substrate 1 and the orthographic projection of the edge of the side of the thinning region 41 close to the pixel opening 301 on the substrate 1 is a second length, and the first length is not less than the second length.

[0062] In the embodiments provided in the present application, the display panel 10 can adjust the first length defined by the isolation structure 2 and the pixel opening 301 to be not less than the second length defined by the light-emitting functional layer 4 and the isolation structure 2, so that a large enough distance between the isolation opening 201 and the pixel opening 301 can be defined for the filling film layer, and the film layer can be kept relatively flat, for example, the light-emitting functional layer 4. After the film layer filled in the isolation opening 201 can be kept a certain degree of flatness, the display effect of the display panel 10 can be improved to a certain extent, so that better display quality can be presented.

[0063] The pixel definition layer 3 can define the exposure area of another light-emitting functional structure for cooperating with the light-emitting functional layer 4 through the pixel opening 301 opened thereon. Generally, the other light-emitting functional structure is located between the pixel definition layer 3 and the substrate 1, and part of it is exposed relative to the pixel opening 301. The pixel opening 301 can cooperate with the light-emitting functional layer 4, the other light-emitting functional structure, and the corresponding light-emitting functional layer to define the light-emitting area size and the boundary of the light-emitting range of the light-emitting unit. In the light-emitting area, if the film layer has a non-uniform thickness, the light-emitting efficiency of the light-emitting area will be non-uniform, which will affect the final display effect.

[0064] It should be noted that the light-emitting functional layer 4 can include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, an organic light-emitting material layer, an electron injection layer, an electron transport layer, and a hole blocking layer.

[0065] The display panel 10 can further include an electrode layer, the electrode layer at least partially covers the light-emitting functional layer 4, the electrode layer and at least one of the hole injection layer, the hole transport layer, the electron blocking layer, the organic light-emitting material layer, the electron injection layer, the electron transport layer, and the hole blocking layer are laminated on the substrate 1, and the electrode layer includes any one of a cathode and an anode.

[0066] Optionally, the hole injection layer, the hole transport layer, the electron blocking layer, the organic light-emitting material layer, the hole blocking layer, the electron transport layer, the electron injection layer, and the cathode are sequentially laminated on the substrate 1, and the electrode layer is electrically connected with the isolation structure 2, and the electrode layer and the isolation structure are at least partially overlapped.

[0067] It should be noted that in the embodiments of the present application, the specific form of the isolation structure 2 is not limited as long as the overall structure of the isolation structure 2 is wide at the top and narrow at the bottom.

[0068] The composition and preparation of the isolation structure 2 are further described in patents CN118251982A, patent 202410864269.8, patent PCT / CN2024 / 098407, patent PCT / CN2024 / 102783, patent PCT / CN2024 / 098217, patent PCT / CN2024 / 099419, patent PCT / CN2024 / 099072, CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, CN117396039A, CN116669480A, CN116600606A, CN117500332A, the contents of which are incorporated herein by reference for reference.

[0069] Next, several setting modes of the isolation structure 2 are briefly described by way of examples.

[0070] Please refer to Figures 1-2 The above-mentioned orthogonal projection of the pixel opening 301 on the substrate 1 is located within the orthogonal projection range of the isolation opening 201 on the substrate 1; the crown 22 of the isolation structure 2 has a side wall in the circumferential direction, and the plane of the side wall can be perpendicular to the plane of the substrate 1, or there can be a certain angle. The side wall can cooperate with the pixel opening 301 to define the above-mentioned first length, or can cooperate with the thinning area 41 to define the above-mentioned second length.

[0071] In order to facilitate the description and limitation of the above-mentioned various dimensions, along the extension direction of the substrate 1, the end of the support portion 21 close to or pointing to the isolation opening 201 is recorded as P0, the end of the thinning area 41 close to or pointing to the isolation structure 2 is recorded as P1, the end of the crown 22 close to or pointing to the isolation opening 201 is recorded as P2, the end of the thinning area 41 close to or pointing to the pixel opening 301 is recorded as P3, and the end of the pixel opening 301 close to or pointing to the isolation structure 2 is recorded as P4.

[0072] Please refer to Figure 2, the first length is defined as L1, and L1 is defined by P2 and P4; the second length is defined as L2, and L2 is defined by P2 and P3. Since the first length L1 is not less than the second length L2, it can be ensured that the distance between the end of the isolation structure 2 facing the substrate 1 and the pixel opening 301 is sufficient to accommodate the light-emitting functional layer 4 with a certain size, so that the part of the light-emitting functional layer 4 located in the pixel opening 301 can remain relatively flat, which can normally supply power, and help to improve the working condition of the related light-emitting unit and improve the display effect of the display panel 10.

[0073] The light-emitting functional layer 4 can be covered on the side of the pixel definition layer 3 away from the substrate 1 through the pixel opening 301 by evaporation or the like. Due to the influence of the evaporation angle and the evaporation direction, during the evaporation process, the part of the film layer located in the edge area will be affected by the relative position between the evaporation source and the corresponding substrate and other factors, resulting in uneven thickness and forming a thinning area 41 with a gradually inclined surface. That is, the surface of the thinning area 41 away from the pixel definition layer 3 is an inclined surface, and the inclined surface is inclined towards the end of the isolation structure 2 close to the pixel definition layer 3. Please refer to Figure 2 The film layer of the light-emitting functional layer 4 located in the thinning area 41 is closer to the isolation structure 2, and the thickness is thinner.

[0074] If the first length L1 is less than the second length L2, the thinning area 41 will only partially cover the pixel definition layer 3, and the remaining part will fall into the pixel opening 301, resulting in poor flatness of the film layer in the pixel opening 301. At this time, the light-emitting functional layer 4 with poor flatness will cause uneven electric field distribution, which directly affects the light-emitting efficiency of the light-emitting unit. The light-emitting functional layer 4 with unevenness makes the electric field intensity different in different areas, resulting in inconsistent light-emitting intensity of the light-emitting unit, and finally showing that the picture displayed by the display panel 10 has uneven brightness. In addition, there may be color deviation, reduced viewing angle, and other situations, which seriously affect the image quality and visual effect.

[0075] Therefore, by limiting the size between the first length L1 and the second length L2, the display effect of the display panel 10 can be effectively improved, and the display quality can be improved.

[0076] Under the premise that the size and shape of the isolation structure 2 in the display panel 10 remain unchanged, the greater the length of L1, the better the flatness of the light-emitting functional layer 4.

[0077] In some embodiments, the light-emitting functional layer 4 further includes a flat area 42 located on the side of the pixel definition layer 3 away from the substrate 1, the flat area 42 is connected to the thinning area 41, and the flat area 42 is located on the side of the thinning area 41 facing the pixel opening 301, please refer to Figure 2In addition to the flat region 42, the light-emitting functional layer 4 also includes a portion of the film layer located in the pixel opening 301.

[0078] The flat region 42 is located on the side of the pixel definition layer 3 away from the substrate 1. The thickness of the film layer at different positions in the flat region 42 is relatively uniform and the surface is relatively flat. By connecting the thinning region 41 and the portion of the light-emitting functional layer 4 located in the pixel opening 301 through the flat region 42, the flatness of the light-emitting functional layer 4 located at the pixel opening 301 can be improved, and the light-emitting functional layer 4 located in the pixel opening 301 can basically maintain the flatness of the film layer, so as to better contact the electrode layer and other film layers. The film layer adjacent to the light-emitting functional layer 4 can realize effective transfer of charges to the light-emitting functional layer 4, which helps to improve the utilization efficiency of charges, so that the portion of the light-emitting functional layer 4 located in the pixel opening 301 has better light-emitting uniformity and light-emitting brightness when it is electrified to emit light, and the display quality of the display panel 10 is improved.

[0079] In consideration of the fact that the light-emitting functional layer 4 does not need to be connected to the isolation structure 2, in order to avoid the leakage of the corresponding film layer (for example, the HIL layer, the hole injection layer), in some embodiments, the orthographic projection of the above-mentioned thinning region 41 on the substrate 1 partially overlaps with the orthographic projection of the crown portion 22 close to the isolation opening 201 on the substrate 1, and the orthographic projection of the thinning region 41 on the substrate 1 is spaced apart from the orthographic projection of the support portion 21 close to the isolation opening 201 on the substrate 1.

[0080] The above-mentioned spacing can ensure that the thinning region 41 does not directly contact the isolation structure 2, so as to avoid the interference of the isolation structure 2 with the current transmission in the light-emitting functional layer 4 and avoid the lateral leakage defect of the light-emitting functional layer 4.

[0081] Please refer to Figure 2 The cross-sectional structure of the above-mentioned support portion 21 and crown portion 22 in the thickness direction is trapezoidal, wherein the thickness of the support portion 21 is greater than the thickness of the crown portion 22, and the minimum width of the crown portion 22 in the lateral direction is greater than the maximum width of the support portion 21 in the lateral direction, so the orthographic projection of the above-mentioned support portion 21 on the substrate 1 is located within the orthographic projection of the crown portion 22 on the substrate 1. The orthographic projection of the thinning region 41 on the substrate 1 can be partially located in the region where the orthographic projection of the crown portion 22 on the substrate 1 does not overlap with the orthographic projection of the support portion 21 on the substrate 1.

[0082] This structure design can effectively avoid the contact between the light-emitting functional layer 4 and the isolation structure 2.

[0083] The cross-sectional structure of the isolation structure 2 composed of the support portion 21 and the crown portion 22 is T-shaped. In some embodiments, the above-mentioned support portion 21 is a multi-layer structure. For example, the support portion 21 can be configured to include at least two stacked sub-support portions.

[0084] In some embodiments, the orthographic projection of the sub-support portion close to the substrate on the substrate 1 is within the orthographic projection range of the crown portion on the substrate 1; the orthographic projection of the sub-support portion far from the substrate 1 on the substrate 1 is within the orthographic projection range of the sub-support portion close to the substrate 1 on the substrate 1, and the sectional structure of the isolation structure 2 is in the shape of an inverted trapezoid or a structure similar to an inverted trapezoid.

[0085] Specifically, the side of the support portion 21 close to the isolation opening 201 towards the substrate 1 is a first end face 211, and the distance between the orthographic projection of the edge of the first end face 211 on the substrate 1 and the orthographic projection of the edge of the crown portion 22 close to the isolation opening 201 on the substrate 1 is a third length L3. The end of the first end face 211 close to or pointing to the isolation opening 201 is denoted as P0, and the third length L3 is defined by P0 and P2.

[0086] The third length L3 is used to avoid the contact or overlap between the light-emitting functional layer 4 and the side wall of the isolation structure 2.

[0087] The L3 can be adjusted in coordination with the adjustment of the evaporation angle to control the evaporation range of the relevant film layer when the light-emitting functional layer 4 and the subsequent other film layers are evaporated, so as to ensure that the different film layers finally evaporated can be overlapped with or kept a distance from the side wall of the isolation structure 2 according to the design requirements. That is, the L3 is used to adjust the distribution range of the film layers prepared by various evaporation processes.

[0088] The light-emitting functional layer 4 needs to keep a certain distance from the corresponding side wall or the peripheral area of the isolation structure 2 to avoid overlap, and therefore the third length L3 needs to be adjusted to have a proper size: when the other conductive film layer connected with the light-emitting functional layer 4 needs to be overlapped with the corresponding side wall or the peripheral area of the isolation structure 2, the length of the corresponding L3 can be adjusted in size as needed to ensure the overlap effect; when the other conductive film layer connected with the light-emitting functional layer 4 (for example, the electrode layer covering the light-emitting functional layer 4, which can be a cathode layer or an anode layer) does not need to be overlapped with the corresponding side wall or the peripheral area of the isolation structure 2 due to design requirements, the length of the corresponding L3 can be appropriately reduced to help reduce the size of the isolation structure 2, improve the design width of the pixel gap by adjusting the size of the third length L3, and help improve the pixel density and enhance the display effect of the display panel 10.

[0089] Specifically, the third length L3 is not greater than 0.8 μm.

[0090] Further, the third length L3 can be adaptively adjusted within the range of 0.3 μm-0.8 μm, for example, 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm.

[0091] In some embodiments, neither of the two circumferentially opposite sides of the light-emitting functional layer 4 needs to be overlapped with the side wall of the isolation structure 2 or the peripheral area thereof, but in order to obtain better light-emitting effect and avoid color mixing of a certain light-emitting functional layer, the two ends of the light-emitting functional layer 4 in the circumferential direction are generally extended above the pixel definition layer 3. At the same time, the above structure also helps the other conductive film layer (for example, the electrode layer, which is not drawn in the figure) located on the side of the light-emitting functional layer 4 away from the substrate 1 to be normally overlapped with the side wall of the isolation structure 2.

[0092] In some embodiments, taking the electrode layer as an example, both ends of the electrode layer need to be overlapped with the isolation structure 2; in other embodiments, the electrode layer can also be arranged such that only one end needs to be overlapped with the isolation structure 2. At this time, the distribution range of the light-emitting functional layer 4 in the isolation opening can be adjusted as needed.

[0093] Please refer to Figure 3 , the flat area 42 is annular structure and is arranged one by one in the corresponding isolation opening 201. In the direction perpendicular to the cross section of the substrate 1, the flat area 42 in the isolation opening 201 includes oppositely arranged first flat area 421 and second flat area 422. The first flat area 421 and the second flat area 422 are respectively located on both sides of the pixel opening 301, and the length of the first flat area 421 is greater than that of the second flat area 422. On the isolation structure 2, the side wall corresponding to the first flat area 421 is the first side wall 202, and the side wall corresponding to the second flat area 422 is the second side wall 203. The third length L3 corresponding to the first side wall 202 is greater than the third length L3 corresponding to the second side wall 203.

[0094] The electrode layer located above the second flat area 422 of the light-emitting functional layer 4 does not need to be overlapped with the side wall of the isolation structure 2. Therefore, under the premise of ensuring that the light-emitting functional layer 4 is not overlapped with the side wall of the isolation structure 2, the corresponding third length L3 of the film layer can be shortened to a certain extent, so that the corresponding area of the isolation structure 2 can be minimized, thereby maximizing the distance between the two adjacent isolation openings 201, and under the premise of not affecting the independent light-emitting of the two adjacent light-emitting units and without current crosstalk, leakage and other faults, the arrangement density of the light-emitting units can be improved, the arrangement density of the light-emitting units is maximized, so as to improve the display quality of the display panel 10 and improve the display effect.

[0095] Specifically, the form and extension of the light-emitting functional layer 4 located in different isolation openings 201 can be adjusted according to actual needs, and the present embodiment and other similar embodiments do not limit it.

[0096] Please refer to Figures 4-5The display panel 10 further comprises an encapsulation layer 5 configured to encapsulate the light emitting units located in the corresponding isolation openings 201.

[0097] The encapsulation layer 5 can be a thin film structure prepared by a chemical vapor deposition (CVD) technique.

[0098] Specifically, the encapsulation layer 5 comprises a first covering portion 51 and a connecting portion 52, wherein the first covering portion 51 is located on the side of the isolation structure 2 away from the substrate 1, and is in contact with the edge of the crown portion 22 close to the isolation opening 201 through the connecting portion 52. At least part of the connecting portion 52 protrudes towards the isolation opening 201 relative to the crown portion 22.

[0099] The connecting portion 52 is in contact with and connected to the side wall of the one end of the crown portion 22 pointing to the isolation opening 201, at this time, at least part of the connecting portion 52 can protrude towards the isolation opening 201 relative to the crown portion 22, and shield part of the light emitting functional layer 4 located thereunder; correspondingly, the first covering portion 51 is located on the side of the crown portion 22 away from the substrate 1, i.e. above the crown portion 22 through the connecting portion 52, and a certain gap is maintained between the first covering portion 51 and the surface of the side of the crown portion 22 away from the substrate 1.

[0100] The connecting portion 52 will shield the light emitted by the light emitting unit located thereunder, in order to reduce the influence of the connecting portion 52 on the light as much as possible, in some embodiments, the orthographic projection of the connecting portion 52 on the substrate 1 at least partially overlaps the orthographic projection of the thinning area 41 on the substrate 1, and the orthographic projection of the edge of the thinning area 41 close to the pixel opening 301 on the substrate 1 is located outside the orthographic projection range of the connecting portion 52 on the substrate 1.

[0101] In some embodiments, the orthographic projection of the connecting portion 52 on the substrate 1 is located within the orthographic projection range of the thinning area 41 on the substrate 1.

[0102] Please refer to Figure 5 The orthographic projection of the connecting portion 52 on the substrate 1 at one end towards the pixel opening 301 and the orthographic projection of the thinning area 41 on the substrate 1 at one end towards the pixel opening 301 have a certain spacing, thereby ensuring that the connecting portion 52 can and only can shield part of the thinning area 41 of the light emitting functional layer 4. Since the thinning area 41 of the light emitting functional layer 4 is entirely located on the side of the pixel definition layer 3 away from the substrate 1, this structure can ensure that the connecting portion 52 will not shield the film layer located in the pixel opening 301, thereby ensuring that the corresponding light emitting unit can achieve better light emitting effect as much as possible.

[0103] That is, the length of the portion of the connecting portion 52 protruding relative to the crown portion 22 is less than the second length L2. In addition, when the flat area 42 of the light-emitting functional layer 4 is further covered on the side surface of the pixel definition layer 3 facing away from the substrate 1, there is a gap between the orthographic projection of the flat area 42 of the light-emitting functional layer 4 on the substrate 1 and the orthographic projection of the connecting portion 52 on the substrate 1. That is, the connecting portion 52 does not block the flat area 42 of the light-emitting functional layer 4 at this time, which can reduce the shading effect of the encapsulation layer 5 on the display panel 10 to a certain extent, and can optimize the viewing angle of the display panel 10.

[0104] Specifically, the size of the flat area 42 is determined by P3 and P4 as described above. When the light-emitting functional layer 4 includes the flat area 42, the flat area 42 is located between P3 and P4.

[0105] Please refer to Figure 5 The size of the end of the connecting portion 52 connected to the crown portion 22 is greater than or equal to the size of the side surface of the crown portion 22, and the size of the end connected to the first covering portion 51 is substantially consistent with the first covering portion 51. At this time, the overall shape of the connecting portion 52 is affected by the shape of the first covering portion 51: the greater the thickness of the first covering portion 51, the longer the length of the connecting portion 52 protruding toward the end of the pixel opening 301.

[0106] In order to at least partially improve this problem, in some embodiments, the thickness of the first covering portion 51 is set to a first thickness H1, and the second length L2 is not less than half of the first thickness H1.

[0107] Specifically, the first covering portion 51 is a film layer structure with uniform thickness and flat surface.

[0108] Based on the consideration of pixel density, the second length L2 cannot be too long, and therefore, in some embodiments, the second length L2 is further limited to be not greater than the first thickness H1.

[0109] In order to further ensure that the first thickness H1 does not cause the connecting portion 52 to block the flat area 42 of the light-emitting functional layer 4, it is necessary to set the second length L2 to change with the first thickness H1, and the two are positively correlated. It should be noted that the second length L2 cannot exceed the first length L1.

[0110] That is, the thicker the thickness of the first covering portion 51, the longer the second length L2 formed between the isolation structure 2 and the pixel opening 301, thereby better adapting to the thickness adjustment of the encapsulation layer 5, and ensuring that the first length L1 and the second length L2 can change with the change of the encapsulation layer 5.

[0111] In addition, the thickness of the first covering part 51 also has certain influence on the optical effect of the related light emitting unit. When the light is emitted, part of the light will be emitted through the first covering part 51 and refraction occurs in the process.

[0112] In some embodiments, the second length L2 is not less than half of the first thickness H1.

[0113] Since the relationship between the first length L1 and the second length L2 is defined above, it can be inferred that the first length L1 is defined as follows:

[0114] L1≥max[X*H1, L2], where X is a thickness coefficient;

[0115] In some embodiments of the present application, L1 can be selected according to design needs by comprehensively considering certain values related to the thickness of the packaging layer 5, or certain values greater than or equal to the second length L2, as long as the value taken is the maximum value of the above two parameters to ensure that the film layer in the display panel 10 located in the pixel opening 301 is relatively flat, while reducing the shielding of the packaging layer 5 to the pixel opening 301 and the film layer of the flat area 42 located above the pixel definition layer 3 as much as possible.

[0116] Specifically, the thickness coefficient X can be selected within the range of 0.5-1.0, and the specific value can be adjusted according to design needs. The thickness coefficient X can be set to any value within the range of 0.5-1.0, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1.0.

[0117] Specifically, the first thickness H1 can be selected within the range of 0.6-2.0 μm, and the specific value range can be adjusted according to actual needs. For example, the value of the first thickness H1 can be any value within the range of 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, 1.0 μm, 1.1 μm, 1.2 μm, 1.3 μm, 1.4 μm, 1.5 μm, 1.6 μm, 1.7 μm, 1.8 μm, 1.9 μm, 2.0 μm, etc.

[0118] Specifically, the first thickness H1 can be further limited to the range of 1.0-2.0 μm, and H1 can be any value within the range of 1.0 μm, 1.1 μm, 1.2 μm, 1.3 μm, 1.4 μm, 1.5 μm, 1.6 μm, 1.7 μm, 1.8 μm, 1.9 μm, 2.0 μm, etc.

[0119] In other embodiments, the packaging layer 5 further comprises a second covering part 53, and the second covering part 53 covers the light emitting functional layer 4 and the side surface of the isolation structure 2 close to the isolation opening 201.

[0120] Specifically, the second covering part 53 covers at least part of the support part 21 near the circumferential side of the isolation opening 201, and can also cover at least part of the crown part 22 near the surface of the side of the base 1.

[0121] The connecting part 52 can connect the first covering part 51 and the second covering part 53, and form a continuous encapsulation layer 5 film layer structure, to ensure that the encapsulation layer 5 can provide a better encapsulation effect on the isolation opening 201. Generally, the thickness of the first covering part 51 and the second covering part 53 is positively correlated.

[0122] Since the first length L1 is also related to the second length L2, the second length L2 needs to be limited.

[0123] In some embodiments, the range of the second length L2 is related to the thickness of the isolation structure 2. The thickness of the isolation structure 2 is defined as the second thickness H2. The greater the value of H2, the greater the second length L2, and the two are positively correlated.

[0124] In some embodiments, the relationship between the second length L2 and the second thickness H2 can be:

[0125] L2 = H2 * S, where S is a ratio;

[0126] In this embodiment, the value of S ranges from 0.577 to 2.246.

[0127] In the evaporation process, the angle between the evaporation source (such as the evaporation metal atom source) and the surface normal of the plated substrate is called the evaporation angle. The evaporation angle is used to reflect the incident angle of the particle flow of the evaporated material to the substrate.

[0128] The value of the second length L2 is also related to the angle of the evaporation angle. When the thickness of the isolation structure 2 remains unchanged, the adjustment of the evaporation angle of the light-emitting functional layer 4 will affect the second length L2: the greater the angle of the evaporation angle θ of the light-emitting functional layer 4, the greater the L2 defined by the light-emitting functional layer 4 prepared by evaporation and the isolation structure 2.

[0129] That means that the ratio S of the second length L2 and the second thickness H2 is positively correlated with the evaporation angle θ of the light-emitting functional layer 4.

[0130] The relationship between the evaporation angle θ of the light-emitting functional layer 4 and the ratio S is limited by using trigonometric functions.

[0131] Specifically, the relationship between the ratio S and the evaporation angle θ of the light-emitting functional layer 4 is: S = tan(θ).

[0132] That is, the greater the tangent value of the evaporation angle θ corresponding to the light-emitting functional layer 4, the greater the ratio S of the second length L2 to the second thickness H2.

[0133] It should be noted that due to the influence of processing errors, the ratio S and tan(θ) may not be completely consistent. In order to ensure the reliability of the product, in some embodiments, the relationship between S and tan(θ) can be set as:

[0134] S=tan(θ)+i, where i is a design allowed error value, and i can be positive or negative.

[0135] In some embodiments, the ratio S of the second length L2 to the second thickness H2 is not more than the tangent value of the evaporation angle of the light-emitting functional layer 4.

[0136] Specifically, the ratio S of the second length L2 to the second thickness H2 is equal to the tangent value of the evaporation angle of the light-emitting functional layer 4.

[0137] The second length L2 is defined as follows:

[0138] L2=H2*tan(θ);

[0139] In some embodiments, the second thickness H2 can be 0.45μm-1.5μm. The specific numerical range can be adjusted according to actual needs. For example, the value of the second thickness H2 can be any value in 0.45μm, 0.50μm, 0.55μm, 0.60μm, 0.65μm, 0.70μm, 0.75μm, 0.80μm, 0.85μm, 0.90μm, 0.95μm, 1.10μm, 1.15μm, 1.20μm, 1.25μm, 1.30μm, 1.35μm, 1.40μm, 1.45μm, 1.50μm, etc.

[0140] Specifically, the range of the second thickness H2 can also be limited to 0.7μm-0.9μm. At this time, the second thickness H2 can be any value in 0.7μm, 0.75μm, 0.8μm, 0.85μm, 0.9μm, etc. Specifically, the second thickness H2 can be 0.8μm. The evaporation angle of the light-emitting functional layer 4 can vary within a certain range according to the processing needs and the adjustment of the second thickness H2.

[0141] In addition, when the light-emitting functional layer 4 is prepared by evaporation, the two evaporation angles θ towards the same isolation port 201 can be asymmetric, which can cause different forms on the opposite sides of the prepared light-emitting functional layer 4, especially L2, which can form L2 with different lengths. Please refer to Figure 3 , Figure 3The evaporation source in the figure fails to be directly opposite to the isolation opening 201, resulting in Figure 3 In the figure, the evaporation angles on the left and right sides are different, and correspondingly, the obtained light-emitting functional layer 4 is asymmetric on the two sides, and the lengths of the two L2 are also different, and the L2 value on the side with the larger evaporation angle is obviously larger. Of course, when the evaporation source is directly opposite to the isolation opening 201, at this time Figure 2 In the figure, the evaporation angles on the left and right sides are basically the same, and correspondingly, the obtained light-emitting functional layer 4 is basically symmetrically designed, and the two L2 values are also basically the same.

[0142] Specifically, the range of the above-mentioned evaporation angle θ can be 30°-70°, such as 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, etc. Generally speaking, the evaporation angle of the above-mentioned light-emitting functional layer 4 can be 60° or 66°.

[0143] The side of the support part 21 close to the isolation opening 201 towards the substrate 1 is a first end face 211, and the distance between the orthographic projection of the edge of the first end face 211 on the substrate 1 and the orthographic projection of the edge of the pixel opening 301 on the substrate 1 is a fourth length D.

[0144] The above-mentioned fourth length D is the distance between the side of the isolation structure 2 towards the substrate 1 and the pixel opening 301 formed on the pixel definition layer 3. The fourth length D is defined by the above-mentioned P0 and P4.

[0145] Specifically, D=L1+L3.

[0146] The above-mentioned isolation opening 201 is used to arrange the light-emitting unit.

[0147] Please refer to Figure 5 , at least part of the light-emitting unit is located in the isolation opening 201 and the pixel opening 301 in the figure. The light-emitting unit includes a light-emitting functional layer 4, a cathode layer and an anode layer, and the corresponding film layer structure Figure 5 is not all drawn.

[0148] In some embodiments, the light-emitting functional layer 4 has 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; wherein any one of the first light-emitting functional layer, the second light-emitting functional layer and the third light-emitting functional layer is arranged in the isolation opening 201.

[0149] According to the design requirements, only the light-emitting functional layer 4 with the corresponding wavelength of the emitted light is placed in a certain isolation opening 201.

[0150] In view of the fact that different light-emitting units need to be arranged in different isolation openings 201 of the display panel 10, and the light-emitting units emit light of different wavelengths, in order to optimize the display effect of the display panel 10, balance the light-emitting brightness and color performance of different color light-emitting units, the D value corresponding to the light-emitting unit of different light-emitting color needs to be adjusted according to the demand. By adjusting the size of the above-mentioned D value, the change of the exit angle of the light-emitting unit of different light-emitting color with the film layer such as the encapsulation layer 5 during the light emission process can be changed, and the optimization and adjustment of the final light-emitting effect in the subsequent light refraction process can be realized.

[0151] Of course, the film thickness of the above-mentioned light-emitting unit of different color is also different, and with the change of the film thickness of the light-emitting unit, the above-mentioned D value also increases in turn.

[0152] In some embodiments, in order to further optimize the display effect of the display panel 10 and improve the design width of the pixel gap, the L1 value (also can be the D value) in the isolation opening 201 for arranging different light-emitting units is different.

[0153] Specifically, the fourth length D in the isolation opening 201 with the first light-emitting functional layer is smaller than the fourth length D in the isolation opening 201 with the second light-emitting functional layer; in other words, the first length L1 in the isolation opening 201 with the first light-emitting functional layer is smaller than the first length L1 in the isolation opening 201 with the second light-emitting functional layer.

[0154] Specifically, the fourth length D in the isolation opening 201 with the second light-emitting functional layer is smaller than the fourth length D in the isolation opening 201 with the third light-emitting functional layer; in other words, the first length L1 in the isolation opening 201 with the second light-emitting functional layer is smaller than the first length L1 in the isolation opening 201 with the third light-emitting functional layer.

[0155] In some embodiments, the emitted light of the above-mentioned first light-emitting functional layer is blue, denoted as B, the emitted light of the second light-emitting functional layer is green, denoted as G, and the emitted light of the third light-emitting functional layer is red, denoted as R. Correspondingly, the corresponding D value in the isolation opening 201 for placing B, G and R increases in turn. Correspondingly, the relationship between the shape of each light-emitting unit and the first length L1 is matched, and in the evaporation process, please refer to Figures 6-8 , the first length L1 in the straight edge Scan direction can be appropriately reduced, so that the first length L1 in the Nozzle direction is greater than the first length L1 in the straight edge Scan direction. It should be noted that in the direction parallel to the plane where the substrate 1 is located, the straight edge Scan direction and the Nozzle direction are cross set. Optionally, the straight edge Scan direction and the Nozzle direction are perpendicular.

[0156] In other embodiments, the size of the light-emitting functional layer 4 in the horizontal direction within the corresponding isolation opening 201 is also positively correlated with the cathode layer.

[0157] It can be understood that the display panel 10 provided in the embodiments of the present application can be adjusted to have a first length L1 between the isolation structure 2 and the pixel opening 301 not less than a second length L2 defined by the light-emitting functional layer 4 and the isolation structure 2, so that a large enough spacing between the isolation opening 201 and the pixel opening 301 can be defined for the filling film layer, and the film layer can be kept relatively flat, for example, the light-emitting functional layer 4. After the film layer filled in the isolation opening 201 can maintain a certain flatness, the display effect of the display panel 10 can be improved to some extent, so that better display quality can be presented. In addition, the display panel 10 can also adjust the distance between the isolation structure 2 and the pixel opening 301 according to the size of the protrusion of the connecting portion 52 in the encapsulation layer 5 towards the pixel opening 301 side, so that the orthographic projection of the connecting portion 52 on the substrate 1 falls outside the pixel opening 301, to reduce the shielding of the light-emitting functional layer 4 located in the corresponding pixel opening 301 by the connecting portion 52 of the encapsulation layer 5, and reduce the influence of the viewing angle on the display effect; the thickness of the first covering portion 51 in the encapsulation layer 5 is positively correlated with the distance between the isolation structure 2 and the pixel opening 301, and the thicker the thickness of the covering layer, the greater the distance between the isolation structure 2 and the pixel opening 301; the display panel 10 can also adjust the third length below the isolation structure 2 by adjusting the thickness of the isolation structure 2 to meet the lapping needs of the conductive film layer (such as the electrode layer) when the isolation structure 2 needs to be lapped with the conductive film layer; when the isolation structure 2 does not need to be lapped with the conductive film layer, the design width of the pixel gap can be improved by adjusting the third length, which helps to improve the pixel density and improve the display effect of the display panel 10.

[0158] In another embodiment of the present application, a display device 100 is also provided, which comprises the display panel 10 described in any of the above embodiments, please refer to Figure 9 .

[0159] In the embodiments provided in the present application, the display device 100 has the display panel 10 described above, and thus at least has the advantages of the display panel 10 described above. For specific effects, please refer to the specific description in the foregoing embodiments, which will not be repeated here.

[0160] The display device 100 provided in the embodiments of the present application can be a mobile phone, a notebook, a tablet computer, a smart watch, a smart bracelet, a navigator, a display, a personal digital assistant (PDA) and the like.

[0161] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle 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; An isolation structure is located on the substrate, the isolation structure including a support portion and a crown portion, the crown portion being located on the side of the support portion facing away from the substrate; The isolation structure has an isolation opening, which is formed by the support portion. It is formed by the enclosure of the crown; A pixel definition layer is located between the substrate and the isolation structure. The pixel definition layer has a pixel opening, and the orthographic projection of the pixel opening on the substrate is located within the orthographic projection range of the isolation opening on the substrate. A light-emitting functional layer covers the pixel opening and at least partially covers the surface of the pixel definition layer on the side opposite to the substrate. The light-emitting functional layer includes a thinning region located on the side of the pixel definition layer opposite to the substrate. The orthographic projection of the thinning region on the substrate is at least partially disposed around the orthographic projection of the pixel opening on the substrate. The distance between the orthographic projection of the crown edge near the isolation opening on the substrate and the orthographic projection of the pixel opening edge on the substrate is a first length, and the distance between the orthographic projection of the crown edge near the isolation opening on the substrate and the orthographic projection of the edge of the thinning region near the pixel opening on the substrate is a second length, wherein the first length is not less than the second length.

2. The display panel according to claim 1, characterized in that, The display panel further includes an encapsulation layer, which includes a first cover portion and a connecting portion. The first cover portion is located on the side of the isolation structure facing away from the substrate and contacts the edge of the crown portion near the isolation opening via the connecting portion. At least a portion of the connecting portion protrudes relative to the crown portion toward the isolation opening. The encapsulation layer further includes a second cover portion, which at least covers the light-emitting functional layer; The second cover also covers at least a portion of the support portion around the periphery near the isolation opening; The second cover also covers at least a portion of the surface of the crown near the base.

3. The display panel according to claim 2, characterized in that, The orthographic projection of the connecting portion on the substrate at least partially overlaps with the orthographic projection of the thinning region on the substrate, and the orthographic projection of the edge of the thinning region near the pixel opening on the substrate is outside the orthographic projection range of the connecting portion on the substrate.

4. The display panel according to claim 3, characterized in that, The orthographic projection of the connecting portion on the substrate lies within the orthographic projection of the thinned area on the substrate.

5. The display panel according to claim 2, characterized in that, The thickness of the first covering portion is the first thickness, and the second length is not less than half of the first thickness.

6. The display panel according to claim 5, characterized in that, The second length is not greater than the first thickness.

7. The display panel according to claim 6, characterized in that, The relationship between the first length and the second length satisfies L1≥max[X*H1,L2], where L1 is the first length, L2 is the second length, H1 is the first thickness, and X is the thickness coefficient, with the thickness coefficient X ranging from 0.5 to 1.

0.

8. The display panel according to claim 5, characterized in that, The first thickness is 0.6 μm-2.0 μm.

9. The display panel according to claim 1, characterized in that, The thickness of the isolation structure is the second thickness, and the second length is positively correlated with the second thickness.

10. The display panel according to claim 9, characterized in that, The ratio of the second length to the second thickness ranges from 0.577 to 2.

246.

11. The display panel according to claim 9, characterized in that, The ratio of the second length to the second thickness does not exceed the tangent of the evaporation angle of the light-emitting functional layer.

12. The display panel according to claim 9, characterized in that, The second thickness is 0.45 μm to 1.5 μm.

13. The display panel according to claim 1, characterized in that, The orthographic projection of the thinned area onto the substrate coincides with the orthographic projection of the crown portion near the isolation opening onto the substrate; The orthographic projection of the thinned area on the substrate is spaced apart from the orthographic projection of the support portion near the isolation opening on the substrate.

14. The display panel according to any one of claims 1-13, characterized in that, The light-emitting functional layer further includes a flat region located on the side of the pixel definition layer facing away from the substrate. The flat region is connected to the thinning region and is located on the side of the thinning region facing the pixel opening.

15. The display panel according to claim 14, characterized in that, The orthographic projection of the support portion on the base lies within the orthographic projection of the crown portion on the base; The support includes at least two stacked sub-supports, wherein the orthographic projection of the sub-support farther from the base onto the base is located within the orthographic projection range of the sub-support closer to the base onto the base; The orthographic projection of the sub-support portion closest to the base onto the base is within the orthographic projection range of the crown portion onto the base.

16. The display panel according to claim 15, characterized in that, The side of the support portion near the isolation opening that faces the base is a first end face. The distance between the orthographic projection of the edge of the first end face on the base and the orthographic projection of the edge of the crown portion near the isolation opening on the base is a third length, which is not greater than 0.8 μm.

17. The display panel according to claim 16, characterized in that, The third length is in the range of 0.3μm to 0.8μm.

18. The display panel according to claim 16, characterized in that, In a cross-sectional direction perpendicular to the substrate, the flat area within the isolation opening includes a first flat area and a second flat area arranged opposite to each other. The first flat area and the second flat area are located on both sides of the pixel opening, and the length of the first flat area is greater than the length of the second flat area. The sidewall of the isolation structure arranged corresponding to the first flat area is called the first sidewall, and the sidewall of the isolation structure arranged corresponding to the second flat area is called the second sidewall. The third length corresponding to the first sidewall is greater than the third length corresponding to the second sidewall.

19. The display panel according to claim 16, characterized in that, The light-emitting functional layer has 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 shorter 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 shorter than the wavelength of the light emitted by the third light-emitting functional layer. The isolation opening contains any one of the first light-emitting functional layer, the second light-emitting functional layer, and the third light-emitting functional layer.

20. The display panel according to claim 19, characterized in that, The distance between the orthographic projection of the first end face edge on the substrate and the orthographic projection of the pixel opening edge on the substrate is a fourth length, which is the sum of the first length and the third length; The fourth length within the isolation opening having the first light-emitting functional layer is less than the fourth length within the isolation opening having the second light-emitting functional layer; The fourth length within the isolation opening having the second light-emitting functional layer is less than the fourth length of the isolation opening having the third light-emitting functional layer.

21. A display device, characterized in that, The display panel includes any one of claims 1-20.

Images