Display module and display device

Abstract

The invention provides a display module and a display device, the display module is provided with a first area and a second area surrounding at least one side of the first area, and the display module comprises a substrate, a light-emitting functional layer, a first organic layer and a first functional layer. The light-emitting functional layer is arranged on one side of the substrate, and the first organic layer is arranged on the side, away from the substrate, of the light-emitting functional layer and extends from the first area to the second area. The first functional layer is at least partially located in the second region, the first functional layer is located on the side, facing the substrate, of the first organic layer, and the first functional layer comprises a buffer unit located in the second region. According to the embodiment of the invention, the first functional layer is arranged, and the buffer unit is correspondingly arranged in the first functional layer in the second region, so that the buffer unit is used for blocking the organic material in the first organic layer, the blocking and limiting effects on the first organic layer are achieved, the distribution uniformity of the first organic layer is improved, and the reliability of the device is improved. And the preparation yield and the display reliability of the display module are improved.

Description

Technical Field

[0001] The present application relates to the technical field of display equipment, and in particular to a display module and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) panels and display devices using Light Emitting Diode (LED) devices 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, personal digital assistants, digital cameras, laptops, desktop computers, etc., becoming the mainstream in display devices. Summary of the invention

[0003] The embodiments of the present application provide a display module and a display device, which can improve the manufacturing yield of the display module.

[0004] In a first aspect, an embodiment of the present application provides a display module, the display module having a first area and a second area surrounding at least one side of the first area, the display module comprising:

[0005] substrate;

[0006] A light-emitting functional layer is arranged on one side of the substrate;

[0007] A first organic layer is disposed on a side of the light-emitting functional layer facing away from the substrate and extends from the first area to the second area;

[0008] The first functional layer is at least partially located in the second region and is located on a side of the first organic layer facing the substrate. The first functional layer includes a buffer unit located in the second region.

[0009] In some embodiments, it further includes an encapsulation layer disposed between the first organic layer and the light-emitting functional layer;

[0010] In some embodiments, the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer which are sequentially stacked in a direction away from the substrate;

[0011] The orthographic projection of the first organic layer on the substrate covers and exceeds the orthographic projection of the organic encapsulation layer on the substrate;

[0012] In some embodiments, at least a portion of the buffer unit has an orthographic projection on the substrate outside an orthographic projection of the organic encapsulation layer on the substrate;

[0013] In some embodiments, the first functional layer is located between the encapsulation layer and the first organic layer;

[0014] In some embodiments, the display module further includes a touch layer, which is located between the first functional layer and the light-emitting functional layer.

[0015] In some embodiments, the touch layer is located between the first functional layer and the encapsulation layer.

[0016] In some embodiments, the second area is arranged around the first area;

[0017] In some embodiments, the display module further includes a dam structure located in the second area, the dam structure is arranged around the first area, and at least part of the buffer unit is located on a side of the dam structure away from the first area;

[0018] In some embodiments, the organic encapsulation layer in the encapsulation layer terminates at the dam structure;

[0019] In some embodiments, the dam structure includes a first dam, and a second dam located on a side of the first dam away from the first region, and at least part of the buffer unit is located on a side of the second dam away from the first region;

[0020] In some embodiments, part of the buffer unit is located between the first bank and the second bank; and / or part of the buffer unit is located on a side of the first bank close to the first region.

[0021] In some embodiments, the display module includes a light adjustment portion located in the first region and disposed in contact with the first organic layer;

[0022] In some embodiments, the light-adjusting part and the first organic layer have different refractive indices.

[0023] In some embodiments, the light-emitting functional layer includes a plurality of light-emitting units, the light-adjusting parts are multiple and arranged at intervals, the light-adjusting parts are arranged corresponding to the light-emitting units, and the orthographic projections of the light-emitting units on the substrate at least partially overlap with the orthographic projections of the corresponding light-adjusting parts on the substrate;

[0024] The light adjustment part includes an arc surface facing away from the substrate, the arc surface is protruding in a direction away from the substrate, and the first organic layer is located on the side of the light adjustment part facing away from the substrate;

[0025] In some embodiments, a refractive index of the light-adjusting part is greater than a refractive index of the first organic layer.

[0026] In some embodiments, the light-emitting functional layer includes a plurality of light-emitting units, the light-adjusting portion is provided with a plurality of adjustment openings, the light-emitting units are provided corresponding to the adjustment openings, and the orthographic projections of the light-emitting units on the substrate at least partially overlap with the orthographic projections of the corresponding adjustment openings on the substrate;

[0027] The first organic layer fills the adjustment opening, and a portion of the first organic layer is located on a side of the light adjustment portion away from the substrate, and a refractive index of the light adjustment portion is smaller than a refractive index of the first organic layer;

[0028] In some embodiments, the inner diameter of the adjustment opening gradually increases along the direction in which the light adjustment portion moves away from the substrate;

[0029] In some embodiments, the first functional layer includes a light adjustment portion; or, the light adjustment portion is located on a side of the first functional layer facing away from the substrate;

[0030] In some embodiments, an outer contour of an orthographic projection of the first functional layer on the substrate is located outside an outer contour of an orthographic projection of the first organic layer on the substrate;

[0031] In some embodiments, the refractive index of the light adjustment part is n1, 1.4≤n1≤1.6; the refractive index of the first organic layer is n2, 1.6≤n2≤1.8.

[0032] In some embodiments, the light-emitting functional layer includes a plurality of light-emitting units, the light-adjusting parts are multiple and arranged at intervals, the light-adjusting parts are arranged corresponding to the light-emitting units, and the orthographic projections of the light-emitting units on the substrate overlap with the orthographic projections of the corresponding light-adjusting parts on the substrate at least partially; the first organic layer covers the light-adjusting parts, and the refractive index of the light-adjusting parts is greater than the refractive index of the first organic layer;

[0033] In some embodiments, the light adjustment portion includes a first surface and a second surface opposite to each other in the thickness direction of the substrate, and a first side surface connecting the first surface and the second surface, the first surface is located on a side of the second surface facing away from the substrate, and an angle between the second surface and the first side surface is an acute angle, and the first organic layer is located on a side of the light adjustment portion facing away from the substrate, and covers the first side surface;

[0034] In some embodiments, the first functional layer includes a light adjustment portion; or, the light adjustment portion is located on a side of the first functional layer facing away from the substrate;

[0035] In some embodiments, an orthographic projection outer contour of the first functional layer on the substrate is located outside an orthographic projection outer contour of the first organic layer on the substrate;

[0036] In some embodiments, the refractive index of the light adjustment part is n1, 1.6≤n1≤1.8; the refractive index of the first organic layer is n2, 1.4≤n2≤1.6.

[0037] In some embodiments, the first conductive layer is disposed between the first functional layer and the light-emitting functional layer, and the orthographic projection of the first conductive layer on the substrate is located outside the orthographic projection of the buffer unit on the substrate;

[0038] In some embodiments, the first conductive layer includes a first conductive part, the display module further includes a conductive part and a protective part, the film layer where the conductive part is located is located between the first conductive layer and the light-emitting functional layer, and the film layer where the protective part is located is located between the conductive part and the first functional layer; the conductive part is electrically connected to the first conductive part, and the orthographic projections of the conductive part and the protective part on the substrate overlap with the orthographic projection of the buffer unit on the substrate;

[0039] In some embodiments, the first conductive portion includes a first portion and a second portion disposed on both sides of the buffer unit, and the first portion extends from the first area to the second area;

[0040] The display module further includes a pad structure located in the second area, and the second part is connected to the pad structure.

[0041] In some embodiments, the display module includes a touch layer, the touch layer includes a first conductive layer and a second conductive layer located between the first conductive layer and the light-emitting functional layer, the conductive portion is located in the second conductive layer; the first functional layer is located on a side of the first conductive layer away from the second conductive layer;

[0042] In some embodiments, the first functional layer is disposed in contact with the first conductive layer;

[0043] In some embodiments, the display module further includes an insulating layer located between the first conductive layer and the second conductive layer, and the protection portion is located in the insulating layer;

[0044] In some embodiments, the insulating layer includes an insulating portion located on a side of the protection portion close to the first region, a via structure is formed between the protection portion and the insulating portion, and the first portion of the first conductive portion is connected to the conductive portion at the via structure.

[0045] In some embodiments, the display module further includes a dam structure located in the second area, the second area is arranged around the first area, and the dam structure is arranged around the first area; at least part of the via structure is located on a side of the dam structure away from the first area;

[0046] Alternatively, the display module further includes a dam structure located in the second area, the second area is arranged around the first area, and the dam structure is arranged around the first area; the dam structure includes a first dam and a second dam located on a side of the first dam away from the first area;

[0047] Wherein, at least part of the via structure is located on a side of the first dam facing the first region; and / or, at least part of the via structure is located between the first dam and the second dam.

[0048] In some embodiments, the second region includes a first sub-region located on at least one side of the first region, the buffer unit includes a plurality of first openings located in the first sub-region, the plurality of first openings are arranged in an array, and a projection of the first functional layer located in the first sub-region on the substrate is in a grid shape;

[0049] In some embodiments, the shape of the orthographic projection of the first opening on the substrate includes at least one of a circle, a triangle, a diamond, a rectangle, and a polygon;

[0050] In some embodiments, the buffer unit further includes a second opening, and an area of ​​an orthographic projection of the second opening on the substrate is larger than an area of ​​an orthographic projection of the first opening on the substrate;

[0051] In some embodiments, the second opening is located on a side of the first opening away from the first region;

[0052] In some embodiments, the first opening has a first wall surface facing the first region, and the first wall surface includes a first sub-surface and a second sub-surface that are connected and intersecting;

[0053] In some embodiments, the second opening has a second wall surface facing the first region, the second wall surface includes a plurality of third sub-surfaces and a plurality of fourth sub-surfaces alternately connected, and the third sub-surfaces intersect with the fourth sub-surfaces;

[0054] Alternatively, the shape of the orthographic projection of the second wall surface on the substrate is wavy;

[0055] In some embodiments, in a direction gradually approaching the first region, the depth of the first opening gradually increases, and / or the orthographic projection area of ​​the first opening on the substrate gradually increases;

[0056] In some embodiments, the first opening penetrates the first functional layer, and / or the second opening penetrates the first functional layer.

[0057] In some embodiments, the second area is arranged around the first area; the first sub-area is arranged around the first area;

[0058] In some embodiments, a plurality of first openings are disposed around the first region;

[0059] In some embodiments, the second opening is an annular groove surrounding the first region;

[0060] In some embodiments, the display module further includes a dam structure located in the second region, the dam structure is disposed around the first region, and the dam structure is located between the first sub-region and the first region;

[0061] In some embodiments, a maximum distance between a side of the second opening away from the first region and the dam structure is less than or equal to 150 μm.

[0062] In some embodiments, a minimum distance between a side of the first opening close to the first region and the dam is less than or equal to 60 μm;

[0063] In some embodiments, the orthographic projection of the first opening on the substrate is a rhombus, and the distance between two relatively parallel sides of the rhombus is L1, 6 μm≤L1≤10 μm;

[0064] In some embodiments, the second opening has a width L2, 5 μm≤L2≤25 μm.

[0065] In some embodiments, the first functional layer further includes a third opening located in the second region, a size of an orthographic projection of the third opening on the substrate is larger than a size of an orthographic projection of the first opening on the substrate, and the third opening is located on a side of the buffer unit away from the first region;

[0066] In some embodiments, the display module further includes a first conductive layer disposed between the first functional layer and the light-emitting functional layer, a conductive portion located between the first conductive layer and the light-emitting functional layer, and an insulating layer located between the conductive portion and the first functional layer; wherein the first conductive layer includes a first conductive portion, the conductive portion is electrically connected to the first conductive portion, and the orthographic projections of the conductive portion and the insulating layer on the substrate overlap with the orthographic projection of the buffer unit on the substrate;

[0067] In some embodiments, the first conductive portion includes a first portion and a second portion disposed on both sides of the buffer unit, wherein the first portion extends from the first area to the second area, and the first portion is connected to the second portion through the conductive portion;

[0068] In some embodiments, the display module further includes a pad structure located in the second region, the pad structure is located on a side of the buffer unit away from the first region, and the second portion is connected to the pad structure;

[0069] In some embodiments, the orthographic projection of the third opening on the substrate is located on one side of the orthographic projection of the second portion on the substrate;

[0070] In some embodiments, the third opening is arranged to extend in a direction away from the second portion;

[0071] In some embodiments, two third openings are provided, and the two third openings are respectively located on two opposite sides of the second portion;

[0072] In some embodiments, an area of ​​an orthographic projection of the third opening on the substrate is larger than an area of ​​an orthographic projection of the first opening on the substrate;

[0073] In some embodiments, the shape of the orthographic projection of the third opening on the substrate is a rectangle, a racetrack, etc.;

[0074] In some embodiments, the third opening penetrates the first functional layer.

[0075] In a second aspect, an embodiment of the present application provides a display module, wherein the display module has a first area and a second area surrounding the first area, and the display module includes:

[0076] substrate;

[0077] A light-emitting functional layer is arranged on one side of the substrate;

[0078] A first functional layer is disposed between the first organic layer and the light-emitting functional layer, the first functional layer comprises a buffer unit and a third opening located in the second region, the buffer unit is disposed around the first region, and the third opening is located on a side of the buffer unit away from the first region;

[0079] The first organic layer is arranged on the side of the light-emitting functional layer away from the substrate and extends from the first area to the second area.

[0080] In some embodiments, the buffer unit includes a plurality of first openings, and the plurality of first openings are arranged in an array;

[0081] In some embodiments, a plurality of first openings are disposed around the first region;

[0082] In some embodiments, the shape of the orthographic projection of the first opening on the substrate includes at least one of a circle, a triangle, a diamond, a rectangle, and a polygon;

[0083] In some embodiments, the buffer unit further includes a second opening, and an area of ​​an orthographic projection of the second opening on the substrate is larger than an area of ​​an orthographic projection of the first opening on the substrate;

[0084] In some embodiments, the second opening is located on a side of the first opening away from the first region;

[0085] In some embodiments, the second opening is an annular groove surrounding the first region;

[0086] In some embodiments, the first opening has a first wall surface facing the first region, and the first wall surface includes a first sub-surface and a second sub-surface that are connected and intersecting;

[0087] In some embodiments, the second opening has a second wall surface facing the first region, the second wall surface includes a plurality of third sub-surfaces and a plurality of fourth sub-surfaces alternately connected, and the third sub-surfaces intersect with the fourth sub-surfaces;

[0088] Alternatively, the shape of the orthographic projection of the second wall surface on the substrate is wavy;

[0089] In some embodiments, the first opening penetrates the first functional layer, and / or the second opening penetrates the first functional layer, and / or the third opening penetrates the first functional layer.

[0090] In some embodiments, the display module further includes a dam structure located in the second area, the dam structure is disposed around the first area, and the dam structure is located between the buffer unit and the first area;

[0091] In some embodiments, a maximum distance between the buffer unit and the dam structure is less than or equal to 150 μm.

[0092] In some embodiments, a minimum distance between a side of the first opening close to the first region and the dam is less than or equal to 60 μm;

[0093] In some embodiments, the orthographic projection of the first opening on the substrate is a rhombus, and the distance between two relatively parallel sides of the rhombus is L1, 6 μm≤L1≤10 μm;

[0094] In some embodiments, the second opening has a width L2, 5 μm≤L2≤25 μm.

[0095] In some embodiments, a touch layer is further included between the first functional layer and the light-emitting functional layer, and the touch layer includes a first conductive layer, a second conductive layer, and an insulating layer between the first conductive layer and the second conductive layer;

[0096] The first conductive layer includes a first conductive portion, the second conductive layer includes a conductive portion, the conductive portion is electrically connected to the first conductive portion, and an orthographic projection of the conductive portion on the substrate overlaps with an orthographic projection of the buffer unit on the substrate;

[0097] In some embodiments, the first conductive portion includes a first portion and a second portion disposed on both sides of the buffer unit, wherein the first portion extends from the first area to the second area; and the first portion is connected to the second portion through the conductive portion;

[0098] In some embodiments, the display module further includes a pad structure located in the second region, the pad structure is located on a side of the buffer unit away from the first region, and the second portion is connected to the pad structure;

[0099] In some embodiments, the orthographic projection of the third opening on the substrate is located on one side of the orthographic projection of the second portion on the substrate;

[0100] In some embodiments, the third opening is arranged to extend in a direction away from the second portion;

[0101] In some embodiments, two third openings are provided, and the two third openings are respectively located on two opposite sides of the second portion;

[0102] In some embodiments, the first functional layer is disposed in contact with the first conductive layer.

[0103] In some embodiments, it further includes an encapsulation layer disposed between the first organic layer and the light-emitting functional layer;

[0104] In some embodiments, the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer which are sequentially stacked in a direction away from the substrate;

[0105] The orthographic projection of the first organic layer on the substrate covers and exceeds the orthographic projection of the organic encapsulation layer on the substrate;

[0106] In some embodiments, at least a portion of the buffer unit has an orthographic projection on the substrate outside an orthographic projection of the organic encapsulation layer on the substrate;

[0107] In some embodiments, the first functional layer is located between the encapsulation layer and the first organic layer.

[0108] In some embodiments, the display module includes a light adjustment portion located in the first region and disposed in contact with the first organic layer;

[0109] In some embodiments, the light-adjusting part and the first organic layer have different refractive indices.

[0110] In a second aspect, an embodiment of the present application provides a display device, comprising a display module in any of the aforementioned embodiments.

[0111] The embodiment of the present application provides a display module and a display device, by setting a first functional layer, and correspondingly setting a buffer unit in the first functional layer in the second area, so that the buffer unit is used to block the organic material in the first organic layer, thereby achieving a blocking and limiting effect on the first organic layer, thereby improving the preparation yield and display reliability of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0112] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0113] Figure 1 is a structural schematic diagram of a display module provided in an embodiment of the present application;

[0114] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at the middle area Q;

[0115] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0116] Figure 4 is a schematic cross-sectional structure diagram of another display module at the first area provided in an embodiment of the present application;

[0117] Figure 5 is a schematic cross-sectional structure diagram of another display module at the second area provided in an embodiment of the present application;

[0118] Figure 6 is a structural schematic diagram of another display module provided in an embodiment of the present application;

[0119] Figure 7 is a schematic cross-sectional structure diagram of another display module at the first area provided in an embodiment of the present application;

[0120] Figure 8 is a schematic cross-sectional structure diagram of another display module at the first area provided in an embodiment of the present application;

[0121] Fig. 9 is a schematic cross-sectional structure diagram of another display module at the first area provided in an embodiment of the present application;

[0122] Fig.10 is a schematic cross-sectional structure diagram of another display module at the first area provided in an embodiment of the present application;

[0123] Fig.11 is a partial structural schematic diagram of another display module provided in an embodiment of the present application;

[0124] Fig.12 is a partial structural schematic diagram of another display module provided in an embodiment of the present application;

[0125] Fig.13 It is a structural schematic diagram of a display device provided in an embodiment of the present application.

[0126] Marking Description:

[0127] 100. display module; 200. display device;

[0128] 10. Substrate;

[0129] 20. Light-emitting functional layer; 21. Light-emitting unit;

[0130] 30. a first organic layer;

[0131] 40, first functional layer; 41, buffer unit; 42, first opening; 421, first wall surface; 422, first sub-surface; 423, second sub-surface; 43, second opening; 431, second wall surface; 432, third sub-surface; 433, fourth sub-surface; 44, third opening;

[0132] 50, encapsulation layer; 51, first inorganic encapsulation layer; 52, organic encapsulation layer; 53, second inorganic encapsulation layer;

[0133] 60. light adjustment portion; 61. arc surface; 62. adjustment opening; 63. first surface; 64. second surface; 65. first side surface;

[0134] 70, first conductive layer; 71, first conductive portion; 711, first portion; 712, second portion;

[0135] 80. second conductive layer; 81. conductive part;

[0136] 90. Insulating layer; 91. Protective portion; 92. Insulating portion; 93. Via structure;

[0137] PAD, pad structure;

[0138] DAM, dam structure; DAM1, first dam; DAM2, second dam;

[0139] TP, touch layer;

[0140] A1, first zone; A2, second zone; A21, first sub-zone;

[0141] X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0142] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0143] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0144] In order to realize the display function, a display device is usually provided with a plurality of light-emitting units, and a plurality of functional film layers are usually provided on the light-emitting surface of the light-emitting unit to improve the display effect or meet other performance requirements. However, considering that some functional film layers may contain organic materials, and organic materials are prone to overflow problems, thus affecting the yield rate.

[0145] Regarding the above issues, please refer to Figures 1 to 4 The embodiment of the present application provides a display module 100, which has a first area A1 and a second area A2 surrounding at least one side of the first area A1. The display module 100 includes a substrate 10, a light-emitting functional layer 20, a first organic layer 30, and a first functional layer 40. The light-emitting functional layer 20 is disposed on one side of the substrate 10, and the first organic layer 30 is disposed on the side of the light-emitting functional layer 20 away from the substrate 10, and extends from the first area A1 to the second area A2. The first functional layer 40 is at least partially located in the second area A2, and the first functional layer 40 is located on the side of the first organic layer 30 facing the substrate 10, and the first functionality includes a buffer unit 41 located in the second area A2.

[0146] The display module 100 is a device structure for realizing a display function. The display module 100 has a first area A1 and a second area A2 surrounding at least one side of the first area A1. The first area A1 may be an area in the display module 100 for realizing a display effect, and the second area A2 is a frame area located on the outer side of the first area A1. According to different actual needs, the second area A2 may be arranged on one side or both sides of the first area A1 only along a single direction, or the second area A2 may also be arranged to surround the first area A1. Figure 1 , it is shown that the second area A2 is arranged around the first area A1, and the shapes of the first area A1 and the second area A2 match, that is, the first area A1 is a square structure, and the second area A2 is a square ring structure.

[0147] The substrate 10 is a structure of the display module 100 for carrying other film layers. Part of the structure in the substrate 10 is located in the first area A1, and part of the structure is located in the second area A2. Other film layers can be stacked on one side of the substrate 10 along the thickness direction Z of the substrate 10, wherein the thickness direction Z of the substrate 10, the thickness direction Z of other film layers, and the thickness direction Z of the display module 100 as a whole are usually arranged parallel to each other. Therefore, in order to facilitate understanding, in the drawings, the thickness direction Z of the substrate 10, the thickness direction Z of other film layers, and the thickness direction Z of the display module 100 as a whole are all indicated in the same direction.

[0148] The light-emitting functional layer 20 is a film structure used to realize the display light-emitting needs in the display module 100, and the light-emitting functional layer 20 is usually only arranged in the first area A1. The light-emitting functional layer 20 may include multiple film structures, for example, the light-emitting functional layer 20 may include a light-emitting layer, a hole transport layer and a hole injection layer located on one side of the light-emitting layer, and an electron transport layer and an electron injection layer located on the other side of the light-emitting layer, and the light-emitting functional layer 20 may include multiple light-emitting layers. If the light-emitting functional layer 20 includes multiple light-emitting layers, a charge generation layer may also be arranged between adjacent light-emitting layers. Among them, the hole injection layer, the hole transport layer, the electron injection layer, the electron transport layer, and the charge generation layer may all be common layers with a whole-surface structure.

[0149] In addition, the light-emitting functional layer 20 can be limited to form a plurality of light-emitting units 21, and at least some of the different light-emitting units 21 emit light of different colors to achieve the multi-color display requirements of the display module 100. Optionally, the plurality of light-emitting units 21 include at least one of a red light-emitting unit for emitting red light, a blue light-emitting unit for emitting blue light, and a green light-emitting unit for emitting green light.

[0150] The first organic layer 30 is a functional film layer disposed on the side of the light-emitting functional layer 20 facing away from the substrate 10 and including an organic material. The first organic layer 30 is partially located in the first area A1 and partially located in the second area A2. The first functional layer 40 is a functional film layer disposed on the side of the first organic layer 30 facing the substrate 10. The first functional layer 40 is at least partially located in the second area A2, that is, the first functional layer 40 can be completely located in the second area A2, or the first functional layer 40 can also be partially located in the second area A2 and partially located in the first area A1. The embodiment of the present application does not limit the material composition of the first organic layer 30. Optionally, the first organic layer 30 can include an organic ink material.

[0151] The first functional layer 40 is arranged on the side of the first organic layer 30 facing the substrate 10, that is, during the preparation process of the display module 100, the preparation of the first functional layer 40 is formed before the first organic layer 30. Furthermore, the first functional layer 40 includes a buffer unit 41, and the buffer unit 41 is a structure in the first functional layer 40 that can block the overflow of the organic material to achieve a buffering effect, and the buffer unit 41 is arranged in the second area A2. Among them, the buffer unit 41 can have a variety of forms, and the embodiments of the present application are not limited to this. For example, the buffer unit 41 may include a porous structure, and the organic material can flow and embed into the porous structure to achieve a blocking and limiting effect. Or the buffer unit 41 may include a protruding structure, and the organic material can be blocked by the protruding structure, thereby achieving a medium blocking and limiting effect.

[0152] It should be noted that the embodiments of the present application do not limit the specific functional effects of the first organic layer 30 and the first functional layer 40 in the display module 100. For example, the first functional layer 40 can be used only to block and limit the first organic layer 30, or the first functional layer 40 can have other effects in addition to blocking overflow. On this basis, the first functional layer 40 can be a functional film layer that exists in the relevant technology, or it can be a new film layer structure that is additionally added in the embodiments of the present application to achieve the blocking and limiting effect.

[0153] In addition, the specific film layer position of the first organic layer 30 and the first functional layer 40 in the display module 100 is not limited in the embodiment of the present application. For example, the first functional layer 40 can be located on the side of the light-emitting functional layer 20 facing the substrate 10, or can also be located on the side of the light-emitting functional layer 20 away from the substrate 10, and the first functional layer 40 and the first organic layer 30 can be directly contacted, or there can be other film layers between the two. As long as it is satisfied that it is within the second area A2, the buffer unit 41 in the first functional layer 40 can directly or indirectly block the overflow of the organic material in the first organic layer 30.

[0154] For the partial structure of the first organic layer 30 located in the first area A1, its orthographic projection on the substrate 10 may overlap with the orthographic projection of the light-emitting unit 21 in the light-emitting functional layer 20 on the substrate, or may not overlap, and the embodiment of the present application does not limit this.

[0155] In summary, in the embodiment of the present application, a first functional layer 40 is provided, and a buffer unit 41 is correspondingly provided in the first functional layer 40 in the second area A2, so that the buffer unit 41 is utilized to block the organic material in the first organic layer 30, thereby achieving a blocking and limiting effect on the first organic layer 30, thereby improving the distribution uniformity of the first organic layer 30, and improving the preparation yield rate and display reliability of the display module 100.

[0156] In some embodiments, Figure 4 As shown, the display module 100 further includes an encapsulation layer 50 disposed between the first organic layer 30 and the light-emitting functional layer 20 .

[0157] The embodiment of the present application does not limit the positional relationship between the encapsulation layer 50 and the first functional layer 40 . The first encapsulation layer 50 may be located on the side of the first functional layer 40 facing away from the substrate 10 , or the first encapsulation layer 50 may be located on the side of the first functional layer 40 facing the substrate 10 .

[0158] The encapsulation layer 50 is a functional film layer that has an encapsulation effect, which can have an encapsulation and protection effect on the light-emitting functional layer 20, while the first organic layer 30 is a functional film layer that has a different effect from the encapsulation layer 50. For example, the display panel may include a light-regulating functional layer, and the light-regulating functional layer includes a first organic layer, for example, the first organic layer includes an electrochromic material, for example, the light-regulating functional layer can be used for an anti-peeping function or the light-regulating functional layer can be a smart skin with a preset pattern. On this basis, considering that a blocking structure is usually provided in the display module 100 to block the overflow of the organic material in the encapsulation layer 50, but since the first organic layer 30 is located on the side of the encapsulation layer 50 away from the substrate 10. Therefore, the blocking structure used to block the overflow of the encapsulation layer 50 often cannot effectively suppress the overflow phenomenon of the first organic layer 30.

[0159] In view of this, the embodiment of the present application further adds a buffer unit 41 in the display module 100, so as to achieve a blocking and limiting effect on the first organic layer 30 through the buffer unit 41, thereby reducing the adverse effects of overflow of the first organic layer 30 on the display effect and yield rate, and improving the reliability of the display module 100.

[0160] The embodiment of the present application does not limit the specific structure and composition of the encapsulation layer 50. Optionally, the encapsulation layer 50 includes a first inorganic encapsulation layer 51, an organic encapsulation layer 52, and a second inorganic encapsulation layer 53 which are sequentially stacked in a direction away from the substrate 10. Among them, the organic encapsulation layer 52 is a film layer structure including organic materials in the encapsulation layer 50, and the first inorganic encapsulation layer 51 and the second inorganic encapsulation layer 53 both include inorganic materials and can play a limiting effect on the organic encapsulation layer 52 to a certain extent.

[0161] In some embodiments, see Figure 5 , the orthographic projection of the first organic layer 30 on the substrate 10 covers and exceeds the orthographic projection of the organic encapsulation layer 52 on the substrate 10 .

[0162] In the embodiment of the present application, since the orthographic projection of the first organic layer 30 on the substrate 10 covers and exceeds the orthographic projection of the organic encapsulation layer 52 on the substrate 10, the edge of the first organic layer 30 will be located on the side of the edge of the organic encapsulation layer 52 away from the first area A1. Considering that the blocking structure used to block the overflow of the organic encapsulation layer 52 is usually located near the edge of the organic encapsulation layer 52, the blocking structure can only play a blocking and limiting effect on the first organic layer 30 to a certain extent, and the blocking structure alone cannot meet the need for blocking overflow of the first organic layer 30. However, due to the existence of the buffer unit 41, it can cooperate with the blocking structure to improve the blocking and limiting effect on the first organic layer 30, thereby reducing the adverse effects of the overflow of the first organic layer 30 on the display effect and the yield rate, and improving the reliability of the display module 100.

[0163] In some embodiments, Figures 3 to 5 As shown, at least part of the buffer unit 41 has an orthographic projection on the substrate 10 outside the orthographic projection of the organic encapsulation layer 52 on the substrate 10. The number of the buffer unit 41 may be one or more. When the number of the buffer unit 41 is multiple, the orthographic projections of the multiple buffer units 41 on the substrate 10 may all be outside the orthographic projection of the organic encapsulation layer 52 on the substrate 10, or the orthographic projections of part of the buffer unit 41 on the substrate 10 are outside the orthographic projection of the organic encapsulation layer 52 on the substrate 10, and the orthographic projections of the remaining part of the buffer unit 41 on the substrate 10 overlap with the orthographic projections of the organic encapsulation layer 52 on the substrate 10.

[0164] In the embodiment of the present application, the position of the buffer unit 41 is restricted, and at least part of the buffer unit 41 is located outside the orthographic projection of the organic encapsulation layer 52 on the substrate 10, that is, at least part of the buffer unit 41 can correspond to the edge position of the organic encapsulation layer 52, thereby helping to improve the blocking and limiting effect of the buffer unit 41 on the first organic layer 30 at the edge position, thereby improving the product yield and display reliability of the display module 100.

[0165] In some embodiments, the first functional layer 40 is located between the encapsulation layer 50 and the first organic layer 30 .

[0166] In the embodiment of the present application, the first functional layer 40 is arranged closer to the first organic layer 30 relative to the encapsulation layer 50, so as to help reduce the distance between the first functional layer 40 and the first organic layer 30 in the thickness direction Z. This design helps to enhance the blocking and limiting effect of the first functional layer 40 on the first organic layer 30, thereby further improving the product yield and display reliability of the display module 100.

[0167] In some embodiments, the display module 100 further includes a touch layer TP, and the touch layer TP is located between the first functional layer 40 and the light-emitting functional layer 20. Further optionally, the touch layer TP is located between the first functional layer 40 and the encapsulation layer 50.

[0168] The touch layer TP is a film structure used to realize the touch function in the display module 100. Similar to the first organic layer 30, the touch layer TP also has a part of its structure located in the first area A1 and a part of its structure located in the second area A2. The touch layer TP is located on the side of the first functional layer 40 facing the substrate 10, that is, the first functional layer 40 can separate the touch layer TP from the first organic layer 30 in the thickness direction Z, thereby reducing the possibility of direct contact between the touch layer TP and the first organic layer 30 in the second area A2, reducing the adverse effect of the first organic layer 30 on the touch signal in the touch layer TP, and improving the touch accuracy of the display module 100.

[0169] In some embodiments, the second area A2 is arranged around the first area A1, that is, the second area A2 surrounds the first area A1. On this basis, according to different design conditions and the influence of process technology, the first organic layer 30 can only extend beyond the first area A1 in a single direction and extend into the second area A2, or the first organic layer 30 can also extend beyond the first area A1 in multiple directions and extend into the second area A2. In other words, the partial structure of the first organic layer 30 located in the second area A2 can only be located on one side or both sides of the first area A1 in a single direction, or can also be located at multiple peripheral positions of the first area A1 in multiple directions.

[0170] In view of this, the buffer unit 41 can also be arranged on one side or both sides of the first area A1 in a single direction according to different actual needs, or can also be located at multiple peripheral positions of the first area A1 in multiple directions. Exemplarily, a plurality of buffer units 41 are provided, and the plurality of buffer units 41 are arranged at multiple peripheral positions of the first area A1 in different directions.

[0171] In some embodiments, see Figure 5 and Figure 6 The display module 100 further includes a dam structure DAM located in the second area A2 . The dam structure DAM is disposed around the first area A1 . At least part of the buffer unit 41 is located on a side of the dam structure DAM away from the first area A1 .

[0172] The dam structure DAM is a blocking structure for blocking the overflow of the organic encapsulation layer 52. Optionally, the organic encapsulation layer 52 ends at the dam structure DAM, that is, the orthographic edge of the organic encapsulation layer 52 on the substrate 10 does not exceed the orthographic edge of the dam structure DAM on the substrate 10. Considering the influence of factors such as process accuracy, the orthographic edge of the organic encapsulation layer 52 on the substrate 10 may also slightly exceed the orthographic edge of the dam structure DAM on the substrate 10, as long as most of the structures in the organic encapsulation layer 52 can be located on the side of the dam structure DAM facing the substrate.

[0173] The dam structure DAM includes a dam, and the orthographic projection of the dam on the substrate 10 is generally an annular structure and is arranged around the first area A1. The dam structure DAM may include one dam, or may include multiple dams, which is not limited in the embodiment of the present application. When the dam structure DAM includes multiple dams, most of the structures in the organic encapsulation layer 52 need to be located on the side of the dam closest to the first area A1 among the multiple dams facing the first area A1.

[0174] Furthermore, in the embodiment of the present application, the dam structure DAM not only blocks the overflow of the organic encapsulation layer 52, but also has a blocking and limiting effect on the first organic layer 30 to a certain extent. As for the part of the structure of the first organic layer 30 that exceeds the dam structure DAM, since at least part of the buffer unit 41 is located on the side of the dam structure DAM away from the first area A1, the buffer unit 41 can effectively block the part of the structure, thereby helping to further enhance the blocking and limiting effect on the first organic layer 30 with the help of the mutual cooperation of the dam structure DAM and the buffer unit 41, and improving the manufacturing yield and display reliability of the display module 100.

[0175] Further, in some optional embodiments, such as Figure 5As shown, the dam structure DAM includes a first dam DAM1 and a second dam DAM2 located on a side of the first dam DAM1 away from the first area A1, and at least part of the buffer unit 41 is located on a side of the second dam DAM2 away from the first area A1.

[0176] According to different actual needs, all buffer units 41 can be located on the side of the second dam DAM2 away from the first area A1, or part of the buffer units 41 can be located on the side of the second dam DAM2 away from the first area A1, and part of the buffer units 41 are located on the side of the second dam DAM2 facing the first area A1, and the embodiment of the present application is not limited to this. Optionally, part of the buffer units 41 are located between the first dam DAM1 and the second dam DAM2; and / or, part of the buffer units 41 are located on the side of the first dam DAM1 close to the first area A1.

[0177] In some embodiments, see Figure 7 The display module 100 includes a light adjustment part 60 located in the first area A1 and contacting the first organic layer 30 .

[0178] The light adjustment part 60 is a structure for adjusting light. The light adjustment part 60 and the light emitting functional layer 20 are both located in the first area A1. The light adjustment part 60 can adjust the light emitted by the light emitting functional layer 20, thereby improving the display effect of the display module 100. Considering that the light adjustment part 60 can have a variety of forms, in different forms, the orthographic projection of the light adjustment part 60 on the substrate 10 can be overlapped with the orthographic projection of the light emitting unit 21 on the substrate 10, or the orthographic projection of the light adjustment part 60 on the substrate 10 can also be located outside the orthographic projection of the light emitting unit 21 on the substrate 10, and the embodiment of the present application does not limit this.

[0179] In the embodiment of the present application, the light adjustment unit 60 is provided in the display module 100, so that the display effect of the display module 100 can be improved and the viewing experience can be improved. On this basis, by setting the first organic layer 30 to be in contact with the light adjustment unit 60, the first organic layer 30 can cooperate with the light adjustment unit 60 or assist the light adjustment unit 60 to achieve the effect of adjusting the light and enhance the display effect.

[0180] In some embodiments, the light-adjusting part 60 and the first organic layer 30 have different refractive indices.

[0181] In this design, the light propagating to the contact surface between the light adjustment part 60 and the first organic layer 30 can be refracted or reflected, thereby changing the propagation path of the light, thereby improving the effect. For example, the light with a larger tilt angle emitted by the light emitting unit 21 can be refracted or reflected at the contact surface between the light adjustment part 60 and the first organic layer 30, and converted into light with a smaller tilt angle, thereby improving the light extraction efficiency of the display module 100 and reducing the overall power consumption.

[0182] The embodiment of the present application does not limit the positional relationship between the light adjustment part 60 and the first organic layer 30. For example, the light adjustment part 60 and the first organic layer 30 can be stacked in the thickness direction Z, or one of them is provided with a hole structure, and the other is at least partially located in the hole structure. On this basis, the contact surface between the light adjustment part 60 and the first organic layer 30 can be located on one side of the light adjustment part 60 in the thickness direction Z, or can also be located at the side wall position of the hole structure.

[0183] In some embodiments, Figure 7 As shown, the light-emitting functional layer 20 includes a plurality of light-emitting units 21, and the light-adjusting parts 60 are multiple and arranged at intervals. The light-adjusting parts 60 are arranged corresponding to the light-emitting units 21, and the orthographic projection of the light-emitting unit 21 on the substrate 10 is at least partially overlapped with the orthographic projection of the corresponding light-adjusting part 60 on the substrate 10; the light-adjusting part 60 includes an arcuate surface 61 on the side facing away from the substrate 10, and the arcuate surface 61 is protruded in a direction away from the substrate 10, and the first organic layer 30 is located on the side of the light-adjusting part 60 facing away from the substrate 10.

[0184] The light adjustment part 60 is arranged corresponding to the light emitting unit 21, and the orthographic projection of the light emitting unit 21 on the substrate 10 overlaps at least partially with the orthographic projection of the corresponding light adjustment part 60 on the substrate 10. On this basis, at least part of the light emitted by the light emitting unit 21 needs to pass through the light adjustment part 60 before exiting the display module 100. Optionally, the orthographic projection of the light adjustment part 60 on the substrate 10 covers and exceeds the orthographic projection of the light emitting unit 21 on the substrate 10.

[0185] The light adjustment part 60 has two opposite surfaces in the thickness direction Z, and the arc surface 61 is the surface relatively far away from the substrate 10 among the two surfaces. Further, in the embodiment of the present application, by setting the arc surface 61 to protrude in the direction away from the substrate 10, the light adjustment part 60 can be in a structure similar to a convex lens. Since the convex lens itself has a light focusing effect, the display module 100 can achieve the focusing effect of the light emitted from the light emitting unit 21 with the help of the light adjustment part 60, thereby improving the light extraction efficiency of the display module 100.

[0186] In some optional embodiments, the refractive index of the light adjustment part 60 is greater than the refractive index of the first organic layer 30. Figure 7 In the figure, the propagation path of the light is indicated by the dotted line.

[0187] Since the first organic layer 30 is located on the side of the light adjustment part 60 away from the substrate 10, the arc surface 61 is the contact surface between the first organic layer 30 and the light adjustment part 60. On this basis, the embodiment of the present application also sets the refractive index of the light adjustment part 60 to be greater than the refractive index of the first organic layer 30, so that the light with a larger tilt angle emitted by the light emitting unit 21 can be refracted on the arc surface 61 and converted into light with a smaller tilt angle to be emitted from the display module 100, thereby further enhancing the light extraction efficiency of the display module 100 and reducing the overall power consumption.

[0188] In some embodiments, see Figure 8 The light-emitting functional layer 20 includes a plurality of light-emitting units 21, and the light-adjusting portion 60 is provided with a plurality of adjustment openings 62. The light-emitting units 21 are arranged corresponding to the adjustment openings 62. The orthographic projection of the light-emitting unit 21 on the substrate 10 at least partially overlaps with the orthographic projection of the corresponding adjustment opening 62 on the substrate 10. The first organic layer 30 fills the adjustment opening 62, and a portion of the first organic layer 30 is located on a side of the light-adjusting portion 60 away from the substrate 10. The refractive index of the light-adjusting portion 60 is less than the refractive index of the first organic layer 30.

[0189] The adjustment opening 62 is an opening structure provided in the light adjustment portion 60 corresponding to the light emitting unit 21, and the orthographic projection of the light emitting unit 21 on the substrate 10 at least partially overlaps with the orthographic projection of the corresponding adjustment opening 62 on the substrate 10. Optionally, the orthographic projection of the adjustment opening 62 on the substrate 10 covers and exceeds the orthographic projection of the light emitting unit 21 on the substrate 10.

[0190] The first organic layer 30 fills the adjustment opening 62, and part of the first organic layer 30 is located on the side of the light adjustment part 60 away from the substrate 10, so the contact surface between the first organic layer 30 and the light adjustment part 60 includes two parts, one of which is the side wall of the adjustment opening 62, and the other is the surface of the light adjustment part 60 away from the substrate 10.

[0191] On this basis, part of the light emitted by the light-emitting unit 21 will directly enter the first organic layer 30 through the adjustment opening 62, and the other part will directly enter the light adjustment part 60. For the light directly entering the first organic layer 30 through the adjustment opening 62, the light corresponding to the smaller inclination angle will not propagate into the light adjustment part 60, but will directly leave the first organic layer 30. However, the light corresponding to the larger inclination angle will propagate through the first organic layer 30 to the side wall position of the adjustment opening 62. In this case, since the refractive index of the light adjustment part 60 is smaller than the refractive index of the first organic layer 30, the light with a larger inclination angle can be totally reflected at the side wall position of the adjustment opening 62 and converted into light with a smaller inclination angle, thereby improving the light extraction efficiency of the display module 100.

[0192] For the light directly entering the light adjustment part 60, this part of the light will propagate to the side surface of the light adjustment part 60 facing away from the substrate 10, and refract at this position, thereby converting into light with a smaller inclination angle to enter the first organic layer 30, which also helps to improve the light output efficiency of the display module 100.

[0193] In summary, in the embodiment of the present application, part of the light with a larger tilt angle emitted by the light emitting unit 21 will propagate through the first organic layer 30 to the side wall of the adjustment opening 62, and undergo total reflection. The other part will propagate through the light adjustment portion 60 to the surface of the light adjustment portion 60 facing away from the substrate 10, and undergo refraction. In either case, the light with a larger tilt angle can be converted into light with a smaller tilt angle, thereby improving the light extraction efficiency of the display module 100 and reducing the overall power consumption.

[0194] The specific refractive index of the light adjustment part 60 and the first organic layer 30 is not limited in the embodiment of the present application. Optionally, the refractive index of the light adjustment part 60 is n1, 1.4≤n1≤1.6; the refractive index of the first organic layer 30 is n2, 1.6≤n2≤1.8. Exemplarily, n1 is one of 1.4, 1.45, 1.5, 1.55 and 1.6. n2 is one of 1.6, 1.65, 1.7, 1.75 and 1.8. Among them, when n2=1.6, n1 needs to satisfy 1.4≤n1<1.6.

[0195] In some embodiments, Figure 8 As shown, along the direction in which the light adjustment portion 60 moves away from the substrate 10 , the inner diameter of the adjustment opening 62 gradually increases.

[0196] It should be noted that the "inner diameter of the adjustment opening 62" mentioned here refers to the size of the adjustment opening 62 in a direction parallel to the plane where the substrate 10 is located, and does not constitute a limitation on the shape of the adjustment opening 62. The orthographic projection of the adjustment opening 62 on the substrate 10 can be a circular structure, or a polygonal or other regular or irregular structure, which is not limited in the embodiment of the present application.

[0197] Along the direction where the light adjustment part 60 is away from the substrate 10, the inner diameter of the adjustment opening 62 gradually increases, that is, the side wall of the adjustment opening 62 can be inclined, on this basis, part of the light emitted by the light emitting unit 21 can be emitted along the inclined direction of the side wall of the adjustment opening 62, so as to meet the display viewing angle required by the display module 100. The light with a larger inclined viewing angle emitted by the light emitting unit 21 will partially propagate to the side wall position of the adjustment opening 62 and emit total reflection, so as to improve the light extraction efficiency of the display module 100 and reduce the overall power consumption of the display module 100.

[0198] The present embodiment does not limit the positional relationship between the first functional layer 40 and the light adjustment part 60. In some embodiments, the first functional layer 40 includes the light adjustment part 60. In other words, the film layer where the light adjustment part 60 is located is the first functional layer 40.

[0199] The embodiment of the present application adjusts the structure of the film layer where the light adjustment part 60 is located, so that it can extend to the second area A2 on the basis of including the light adjustment part 60 located in the first area A1, and includes the buffer unit 41 located in the second area A2. In this way, the first functional layer 40 can not only play a role in adjusting the light output effect of the display module 100 and improving the light output efficiency of the display module 100, but also play a role in blocking and limiting the first organic layer 30, thereby improving the yield rate and display reliability of the display module 100 without adding other film layer structures.

[0200] Of course, in other embodiments, the light adjustment part 60 may not be located in the first functional layer 40. Further optionally, the light adjustment part 60 is located on the side of the first functional layer 40 away from the substrate 10. This design can also meet the contact requirements between the light adjustment part 60 and the first organic layer 30, thereby improving the display effect of the display module 100.

[0201] In some embodiments, the orthographic projection outer contour of the first functional layer 40 on the substrate 10 is located outside the orthographic projection outer contour of the first organic layer 30 on the substrate 10. The "outer contour" mentioned here refers to the orthographic projection of the film structure at the edge position. In other words, the orthographic projection of the first functional layer 40 on the substrate 10 can cover and exceed the orthographic projection of the first organic layer 30 on the substrate 10.

[0202] The embodiment of the present application restricts the position of the edge of the first functional layer 40, and sets the outer contour of the orthographic projection of the first functional layer 40 on the substrate 10 to be outside the outer contour of the orthographic projection of the first organic layer 30 on the substrate 10, so as to meet the position layout requirements of the buffer unit 41, so that it can be located at the edge position of the first organic layer 30, thereby achieving effective blocking and limiting of the first organic layer 30 with the help of the buffer unit 41, thereby improving the yield and display reliability of the display module 100.

[0203] In some embodiments, see Fig. 9 The light-emitting functional layer 20 includes a plurality of light-emitting units 21, and the light-adjusting parts 60 are arranged in a plurality and spaced apart from each other. The light-adjusting parts 60 are arranged corresponding to the light-emitting units 21, and the orthographic projection of the light-emitting units 21 on the substrate 10 overlaps at least partially with the orthographic projection of the corresponding light-adjusting parts 60 on the substrate 10. The first organic layer 30 covers the light-adjusting parts 60, and the refractive index of the light-adjusting parts 60 is greater than the refractive index of the first organic layer 30.

[0204] The light adjustment part 60 is arranged corresponding to the light emitting unit 21, and the orthographic projection of the light emitting unit 21 on the substrate 10 overlaps at least partially with the orthographic projection of the corresponding light adjustment part 60 on the substrate 10. On this basis, at least part of the light emitted by the light emitting unit 21 needs to pass through the light adjustment part 60 before exiting the display module 100. Optionally, the orthographic projection of the light adjustment part 60 on the substrate 10 covers and exceeds the orthographic projection of the light emitting unit 21 on the substrate 10.

[0205] Since the multiple light adjustment parts 60 are arranged at intervals from each other, some structures in the first organic layer 30 can be located between adjacent light adjustment parts 60. On this basis, in addition to the side surface of the light adjustment part 60 away from the substrate 10 being the contact surface between the light adjustment part 60 and the first organic layer 30, the circumferential side wall of the light adjustment part 60 is also the contact surface between the light adjustment part 60 and the first organic layer 30.

[0206] Furthermore, in the embodiment of the present application, the light with a larger tilt angle emitted by the light emitting unit 21 usually directly enters the light adjustment portion 60 and propagates to the circumferential side wall of the light adjustment portion 60. Since the refractive index of the light adjustment portion 60 is set to be greater than the refractive index of the first organic layer 30 in the embodiment of the present application, the light with a larger tilt angle can be refracted at this position and converted into light with a smaller tilt angle, thereby improving the light extraction efficiency of the display module 100 and reducing the overall power consumption.

[0207] In some embodiments, the light adjustment portion 60 includes a first surface 63 and a second surface 64 opposite to each other in the thickness direction Z of the substrate 10, and a first side surface 65 connecting the first surface 63 and the second surface 64, the first surface 63 is located on the side of the second surface 64 facing away from the substrate 10, and the angle between the second surface 64 and the first side surface 65 is an acute angle, and the first organic layer 30 is located on the side of the light adjustment portion 60 facing away from the substrate 10 and covers the first side surface 65.

[0208] It can be seen from the accompanying drawings that the first surface 63 and the second surface 64 are two opposite surfaces of the light adjustment portion 60 in the thickness direction Z, and the second surface 64 is arranged closer to the substrate 10 than the first surface 63. The first side surface 65 is a peripheral side surface of the light adjustment portion 60 and the first side surface 65 is arranged to connect the first surface 63 and the second surface 64. Further, the first surface 63 and the first side surface 65 are both contact surfaces between the first organic layer 30 and the first functional layer 40.

[0209] In the embodiment of the present application, by setting the angle between the second surface 64 and the first side surface 65 to an acute angle, the cross-sectional shape of the light adjustment part 60 can be a regular trapezoidal structure, which helps to reduce the contact difficulty between the first organic layer 30 and the light adjustment part 60 at the first side surface 65, improves the overlap strength between the two at the first side surface 65, and thus helps to improve the refraction effect of light at the first side surface 65, and improves the display reliability of the display module 100. When the first side surface 65 is a curved surface, the angle between the second surface 64 and the first side surface 65 can be the angle between the tangent line of the curved surface and the plane where the second surface 64 is located.

[0210] The specific refractive index of the light adjustment part 60 and the first organic layer 30 is not limited in the embodiment of the present application. Optionally, the refractive index of the light adjustment part 60 is n1, 1.6≤n1≤1.8; the refractive index of the first organic layer 30 is n2, 1.4≤n2≤1.6. Exemplarily, n1 is one of 1.6, 1.65, 1.7, 1.75 and 1.8. n2 is one of 1.4, 1.45, 1.5, 1.55 and 1.6. Among them, when n1=1.6, n2 needs to satisfy 1.4≤n2<1.6.

[0211] In addition, the present embodiment does not limit the positional relationship between the first functional layer 40 and the light adjustment part 60. In some embodiments, the first functional layer 40 includes the light adjustment part 60. In other words, the film layer where the light adjustment part 60 is located is the first functional layer 40.

[0212] The embodiment of the present application adjusts the structure of the film layer where the light adjustment part 60 is located, so that it can extend to the second area A2 on the basis of including the light adjustment part 60 located in the first area A1, and includes the buffer unit 41 located in the second area A2. In this way, the first functional layer 40 can not only play a role in adjusting the light output effect of the display module 100 and improving the light output efficiency of the display module 100, but also play a role in blocking and limiting the first organic layer 30, thereby improving the yield rate and display reliability of the display module 100 without adding other film layer structures.

[0213] Of course, in other embodiments, the light adjustment part 60 may not be located in the first functional layer 40. Further optionally, the light adjustment part 60 is located on the side of the first functional layer 40 away from the substrate 10. This design can also meet the contact requirements between the light adjustment part 60 and the first organic layer 30, thereby improving the display effect of the display module 100.

[0214] In some embodiments, the orthographic projection outer contour of the first functional layer 40 on the substrate 10 is located outside the orthographic projection outer contour of the first organic layer 30 on the substrate 10. The "outer contour" mentioned here refers to the orthographic projection of the film structure at the edge position. In other words, the orthographic projection of the first functional layer 40 on the substrate 10 can cover and exceed the orthographic projection of the first organic layer 30 on the substrate 10.

[0215] The embodiment of the present application restricts the position of the edge of the first functional layer 40, and sets the outer contour of the orthographic projection of the first functional layer 40 on the substrate 10 to be outside the outer contour of the orthographic projection of the first organic layer 30 on the substrate 10, so as to meet the position layout requirements of the buffer unit 41, so that it can be located at the edge position of the first organic layer 30, thereby achieving effective blocking and limiting of the first organic layer 30 with the help of the buffer unit 41, thereby improving the yield and display reliability of the display module 100.

[0216] In some embodiments, see Figure 3 and Fig.10 The display module 100 further includes a first conductive layer 70 disposed between the first functional layer 40 and the light-emitting functional layer 20 , and the orthographic projection of the first conductive layer 70 on the substrate 10 is located outside the orthographic projection of the buffer unit 41 on the substrate 10 .

[0217] The first conductive layer 70 is a film structure including a conductor material or a semiconductor material and located between the first functional layer 40 and the light-emitting functional layer 20. The first conductive layer 70 is partially located in the first area A1 and partially located in the second area A2. The first conductive layer 70 can be used to transmit a specific signal voltage. The specific type of the signal transmitted by the first conductive layer 70 is not limited in the embodiment of the present application. Optionally, the first conductive layer 70 can be used to transmit a touch signal to meet the touch display requirements of the display module 100.

[0218] In combination with the above content, it can be known that the buffer unit 41 may include a hole structure for accommodating the organic material in the first organic layer 30, and the presence of the hole structure will relatively expose a portion of the film structure of the first functional layer 40 facing the substrate 10. On this basis, if the conductor material or the semiconductor material is exposed at the position corresponding to the buffer unit 41, the reliability of the internal signal transmission will be affected, which is not conducive to the normal use of the display module 100.

[0219] In view of this, the embodiment of the present application adjusts the structure of the first conductive layer 70 so that the orthographic projection of the first conductive layer 70 on the substrate 10 is located outside the orthographic projection of the buffer unit 41 on the substrate 10. This can reduce the risk of the conductor material or semiconductor material in the first conductive layer 70 being relatively exposed at the buffer unit 41, thereby improving the reliability of signal transmission inside the first conductive layer 70.

[0220] In some embodiments, further combined Figure 5 and Fig.11 The first conductive layer 70 includes a first conductive part 71, and the display module 100 also includes a conductive part 81 and a protective part 91. The film layer where the conductive part 81 is located is located between the first conductive layer 70 and the light-emitting functional layer 20, and the film layer where the protective part 91 is located is located between the conductive part 81 and the first functional layer 40. The conductive part 81 is electrically connected to the first conductive part 71, and the orthographic projections of the conductive part 81 and the protective part 91 on the substrate 10 overlap with the orthographic projection of the buffer unit 41 on the substrate 10.

[0221] The first conductive part 71 is located in the first conductive layer 70, and includes a structure of a conductor material or a semiconductor material. The first conductive part 71 is partially located in the first area A1, and partially located in the second area A2. In combination with the foregoing, it can be seen that the orthographic projection of the first conductive layer 70 on the substrate 10 is located outside the orthographic projection of the buffer unit 41 on the substrate 10. Therefore, optionally, the first conductive part 71 includes a first part 711 and a second part 712 respectively arranged on both sides of the buffer unit 41, and the first part 711 extends from the first area A1 to the second area A2, and the first part 711 is connected to the second part 712 through the conductive part 81. Among them, the second part 712 needs to be electrically connected to the driver chip or circuit board structure to meet the corresponding driving needs.

[0222] On this basis, in order to achieve electrical connection between the first part 711 and the second part 712 to meet the needs of signal transmission, the embodiment of the present application additionally adds a conductive part 81, and the conductive part 81 includes a conductor material or a semiconductor material, and the conductive part 81 can be respectively contacted and connected with the first part 711 and the second part 712, so that the first part 711 and the second part 712 can achieve signal transmission through the conductive part 81.

[0223] It should be noted that the conducting portion 81 may have a variety of material compositions, for example, the conducting portion 81 may include the same material as the first conducting portion 71, or may include different materials. Furthermore, the conducting portion 81 may be located on the side of the first conductor layer facing the substrate 10, that is, the conducting portion 81 is prepared before the first conductor layer is formed, or the conducting portion 81 may be located on the side of the first conductor layer away from the substrate 10, that is, the conducting portion 81 is prepared after the first conductor layer is formed, and the embodiments of the present application are not limited to this.

[0224] Furthermore, considering that the orthographic projection of the conductive part 81 on the substrate 10 will overlap with the orthographic projection of the buffer unit 41 on the substrate 10, in order to reduce the exposure degree of the conductive part 81 at the buffer unit 41, the embodiment of the present application further provides a protective part 91, and the protective part 91 is located on the side of the conductive part 81 away from the substrate 10, and the orthographic projection of the protective part 91 on the substrate 10 will also overlap with the orthographic projection of the buffer unit 41 on the substrate 10, so that the protective part 91 can replace the conductive part 81 to be exposed relative to the buffer unit 41, thereby achieving a covering and protecting effect on the conductive part 81, thereby helping to improve the reliability of signal transmission among the first part 711, the second part 712 and the conductive part 81.

[0225] In summary, in the embodiment of the present application, the conducting part 81 can replace the first conducting part 71 and overlap with the buffer unit 41 while meeting the electrical connection requirements between different structures in the first conducting part 71, so as to protect the first conductor layer. Furthermore, the protection part 91 is also overlapped with the buffer unit 41, and the protection part 91 is also located on the side of the conducting part 81 away from the substrate 10, so that the protection part 91 can cover and protect the partial structure of the conducting part 81 corresponding to the buffer unit 41, so as to improve the signal transmission reliability among the first part 711, the second part 712 and the conducting part 81.

[0226] In some embodiments, Figure 3 As shown, the first conductive portion 71 includes a first portion 711 and a second portion 712 respectively disposed on both sides of the buffer unit 41, and the first portion 711 extends from the first area A1 to the second area A2; the display module 100 also includes a pad structure PAD located in the second area A2, and the second portion 712 is connected to the pad structure PAD.

[0227] The pad structure PAD is a metal area in the display module 100. The display module 100 is connected and fixed to the electronic components by welding at the location of the pad structure PAD to achieve electrical connection between some conductive structures in the display module 100 and the electrical components. The second portion 712 is connected to the pad structure PAD, that is, the second portion 712 can be connected to the electronic components through the pad structure PAD. Optionally, the second portion 712 can be electrically connected to the driver chip through the pad structure PAD.

[0228] In the embodiment of the present application, the driver chip or other electronic components need to transmit the corresponding driving signal to the first area A1 through the second part 712 and the first part 711, or the first part 711 needs to feed back a specific signal to the driver chip or other electronic components through the second part 712. On this basis, in order to meet the signal transmission needs between the two and reduce the adverse effects of the buffer unit 41 on the first conductor layer, a conducting part 81 and a protective part 91 are added to the display module 100, and the signal transmission between the first part 711 and the second part 712 is realized through the conducting part 81, and the covering protection effect of the partial structure of the conducting part 81 corresponding to the buffer unit 41 is realized through the protective part 91, so as to improve the signal transmission reliability among the first part 711, the second part 712 and the conducting part 81.

[0229] In some embodiments, the display module 100 includes a touch layer TP, the touch layer TP includes a first conductive layer 70 and a second conductive layer 80 located between the first conductive layer 70 and the light-emitting functional layer 20, the conductive portion 81 is located in the second conductive layer 80, and the first functional layer 40 is located on a side of the first conductive layer 70 away from the second conductive layer 80.

[0230] The first conductive layer 70 and the second conductive layer 80 are both conductive film layers for transmitting touch signals. The first conductive layer 70 and the second conductive layer 80 are stacked in the thickness direction Z, wherein the first conductive layer 70 is located on the side of the second conductive layer 80 close to the first functional layer 40, that is, the first conductive layer 70 is arranged closer to the first functional layer 40 than the second conductive layer 80.

[0231] On this basis, the embodiment of the present application arranges the conducting part 81 in the second conductive layer 80, so that the conducting part 81 is formed without adding other film layer structures, which is conducive to the thin and light design of the display module 100. At the same time, this design can also increase the distance between the conducting part 81 and the first functional layer 40 in the thickness direction Z, thereby further reducing the adverse effect of the buffer unit 41 in the first functional layer 40 on the conducting part 81 and improving the reliability of signal transmission in the conducting part 81.

[0232] It should be noted that, in the related art, one of the two conductive layers of the touch layer TP that is relatively close to the substrate 10 is usually only disposed in the display area of ​​the display module 100. However, the structure of the film layer is adjusted in the embodiment of the present application, so that the second conductive layer 80 is not only partially located in the first area A1, but also partially located in the second area A2 and overlapped with the buffer unit 41 to form a conductive portion 81 connecting the first portion 711 and the second portion 712.

[0233] In some embodiments, the first functional layer 40 is arranged in contact with the first conductive layer 70, that is, there is no other film layer structure between the first functional layer 40 and the first conductive layer 70. On this basis, if part of the structure in the first conductive layer 70 is arranged corresponding to the buffer unit 41, the part of the structure in the first conductive layer 70 will be exposed relative to the buffer unit 41, which may easily have an adverse effect on the signal transmission in the first conductive layer 70.

[0234] In view of this, in the embodiment of the present application, the first conductive layer 70 is arranged to avoid the buffer unit 41, so that the orthographic projection of the first conductive layer 70 on the substrate 10 is located outside the orthographic projection of the buffer unit 41 on the substrate 10, and an additional conductive portion 81 and a protective portion 91 are provided. In this way, while meeting the signal transmission needs of different regional structures within the first conductive layer 70, the adverse effects of the buffer unit 41 on the signal transmission process can be reduced, thereby improving the reliability of the display module 100.

[0235] In some embodiments, Figure 3 As shown, the display module 100 further includes an insulating layer 90 located between the first conductive layer 70 and the second conductive layer 80 , and the protection portion 91 is located in the insulating layer 90 .

[0236] The insulating layer 90 is a film layer structure in the display module 100 that includes insulating material and is used to separate the first conductive layer 70 and the second conductive layer 80. In the related art, since one of the two conductive layers of the touch layer TP that is relatively close to the substrate 10 is usually only arranged in the display area of ​​the display module 100, the insulating film layer between the two conductive layers is also also only arranged in the display area of ​​the display module 100.

[0237] In the embodiment of the present application, since the structure of the second conductive layer 80 is adjusted to include the conductive portion 81 located in the second area A2, in order to protect the conductive portion 81, the structure of the insulating layer 90 is also adjusted to include the protective portion 91 provided corresponding to the conductive portion 81, thereby achieving the protective effect on the conductive portion 81 while meeting the insulation requirements of the first conductive layer 70 and the second conductive layer 80. At the same time, under this design, the display module 100 does not need to add other film layers for setting the protective portion 91, which helps to achieve a lightweight design.

[0238] In some embodiments, the insulating layer 90 includes an insulating portion 92 located on the side of the protective portion 91 close to the first area A1, a via structure 93 is formed between the protective portion 91 and the insulating portion 92, and the first portion 711 of the first conductive portion 71 is connected to the conductive portion 81 at the via structure 93.

[0239] The insulating portion 92 and the protective portion 91 are both located in the insulating layer 90, and the two may include the same material and be formed together in the same process. The insulating portion 92 is located on the side of the protective portion 91 close to the first area A1, and the insulating portion 92 and the protective portion 91 may be enclosed together to form a via structure 93. The via structure 93 is a hole-shaped structure for realizing the connection between the first portion 711 and the conductive portion 81.

[0240] In the embodiment of the present application, since the via structure 93 is located on the side of the protection portion 91 close to the first area A1, the orthographic projection of the via structure 93 on the substrate 10 overlaps with the orthographic projection of the first organic layer 30 on the substrate 10. On this basis, the presence of the via structure 93 can also have a certain blocking and limiting effect on the first organic layer 30, thereby further reducing the overflow risk of the first organic layer 30 and improving the yield rate and display reliability of the display module 100.

[0241] It should be noted that, in other embodiments, in order to meet the electrical connection requirements between the second portion 712 and the conductive portion 81, the insulating layer 90 may also be provided with a via on the side of the protective portion 91 away from the first area A1. In addition, optionally, the insulating layer 90 may also be provided with a via at the location of the pad structure PAD to meet the connection requirements between the second portion 712 and the pad structure PAD.

[0242] In some embodiments, the display module 100 further includes a dam structure DAM located in the second area A2, the second area A2 is arranged around the first area A1, the dam structure DAM is arranged around the first area A1, and at least part of the via structure 93 is located on the side of the dam structure DAM away from the first area A1. Alternatively, the display module 100 further includes a dam structure DAM located in the second area A2, the second area A2 is arranged around the first area A1, and the dam structure DAM is arranged around the first area A1; the dam structure DAM includes a first dam DAM1, and a second dam DAM2 located on the side of the first dam DAM1 away from the first area A1; wherein at least part of the via structure 93 is located on the side of the first dam DAM1 facing the first area A1; and / or, at least part of the via structure 93 is located between the first dam DAM1 and the second dam DAM2.

[0243] The via structure 93 is a hole-shaped structure for realizing the connection between the first portion 711 and the conductive portion 81. According to different actual needs, only one via structure 93 may be provided, or multiple via structures 93 may be provided. The dam structure DAM is a structure for blocking the overflow of the organic encapsulation layer 52. The dam structure DAM may be provided to surround the first area A1.

[0244] On this basis, the via structure 93 can have more position settings relative to the dam structure DAM. For example, the via structure 93 can be located on the side of the dam structure DAM where all dams are away from the first area A1. On this basis, the orthographic projection of the via structure 93 on the substrate 10 can be located outside the orthographic projection of the organic encapsulation layer 52 on the substrate 10. In this case, the via structure 93 can have a certain auxiliary blocking effect on the overflow of the first organic layer 30, but will not have a blocking effect on the overflow of the organic encapsulation layer 52.

[0245] Alternatively, the via structure 93 may be located on a side of at least one dam in the dam structure DAM close to the first area A1, and on this basis, the orthographic projection of the via structure 93 on the substrate 10 may be located within the orthographic projection of the organic encapsulation layer 52 on the substrate 10. In this case, the via structure 93 may have a certain auxiliary blocking effect on the overflow of the first organic layer 30, and may also have an auxiliary blocking effect on the overflow of the organic encapsulation layer 52.

[0246] In summary, in the embodiment of the present application, according to the different internal structures of the display module 100, the position of the via structure 93 relative to the dam structure DAM can be flexibly adjusted to meet the layout requirements in different situations. Furthermore, when the via structure 93 is in different positions, the via structure 93 can have different relative positional relationships with the organic encapsulation layer 52, so that it can be flexibly selected whether the via structure 93 has an auxiliary blocking effect on the overflow of the organic encapsulation layer 52, which has strong practicality and flexibility.

[0247] In some embodiments, see Figure 1 and Fig.11 The second area A2 includes a first sub-area A21 located on at least one side of the first area A1, the buffer unit 41 includes a plurality of first openings 42 located in the first sub-area A21, the plurality of first openings 42 are arranged in an array, and the projection of the first functional layer 40 located in the first sub-area A21 on the substrate 10 is in a grid shape.

[0248] The first sub-area A21 is an area in the second area A2 where the buffer unit 41 is disposed. According to different actual needs, the first sub-area A21 may be located only on one side or both sides of the first area A1 along the first direction X, or the first sub-area A21 may be located on one side or both sides of the first area A1 along the first direction X and on one side or both sides of the first area A1 along the second direction Y. Further optionally, the first sub-area A21 is disposed to surround the first area A1.

[0249] The buffer unit 41 includes a first opening 42 located in the first sub-area A21, the first opening 42 is formed by a surface depression of the first functional layer 40 away from the substrate 10, the first opening 42 can be completely set through the first functional layer 40, or the size of the first opening 42 in the thickness direction Z can also be smaller than the size of the first functional layer 40 in the thickness direction Z. There are multiple first openings 42, and the orthographic projection shapes and sizes of different first openings 42 on the substrate 10 are basically consistent.

[0250] A plurality of first openings 42 are arranged in an array, and optionally, some of the first openings 42 are arranged side by side along the first direction X, and some of the first openings 42 are arranged side by side along the second direction Y, and the first direction X, the second direction Y, and the thickness direction Z intersect each other. Further optionally, the first direction X, the second direction Y, and the thickness direction Z are perpendicular to each other.

[0251] In the embodiment of the present application, a plurality of first openings 42 are provided so that the projection of the first functional layer 40 located in the first sub-area A21 on the substrate 10 is in a grid shape. The design of the plurality of first openings 42 helps to improve its capacity for accommodating the organic material in the first organic layer 30, thereby further reducing the overflow risk of the first organic layer 30 and improving the yield rate and display reliability of the display module 100.

[0252] In some embodiments, Fig.11 As shown, the shape of the orthographic projection of the first opening 42 on the substrate 10 includes at least one of a circle, a triangle, a diamond, a rectangle, and a polygon.

[0253] In the embodiment of the present application, the size and shape of the first opening 42 can be flexibly adjusted according to different actual needs to meet the needs of array arrangement of multiple first openings 42, or to achieve the need to avoid the first opening 42 relative to other structures, or to improve the blocking and limiting effect of a single first opening 42 on the first organic layer 30, which has strong flexibility and practicality.

[0254] In some embodiments, the buffer unit 41 further includes a second opening 43 , and an orthographic projection area of ​​the second opening 43 on the substrate 10 is larger than an orthographic projection area of ​​the first opening 42 on the substrate 10 .

[0255] The second opening 43 and the first opening 42 are both located in the first sub-area A21, except that the area of ​​the orthographic projection of the second opening 43 on the substrate 10 is larger than the area of ​​the orthographic projection of the first opening 42 on the substrate 10. The orthographic projection shape of the first opening 42 on the substrate 10 may be the same as the orthographic projection shape of the second opening 43 on the substrate 10, or may be different. And according to different actual needs, only one second opening 43 may be provided, or multiple second openings 43 may be provided. Fig.11 FIG. 4 shows a case where only one second opening 43 is provided.

[0256] In the embodiment of the present application, by simultaneously providing a first opening 42 and a second opening 43 in the first functional layer 40 , both the first opening 42 and the second opening 43 can accommodate part of the organic material in the first organic layer 30 , thereby improving the blocking and limiting effect on the first organic layer 30 in the first sub-area A21 .

[0257] In some embodiments, the second opening 43 is located at a side of the first opening 42 away from the first area A1 .

[0258] In the embodiment of the present application, considering that the second opening 43 can have a larger orthographic projection area than the first opening 42, the second opening 43 is arranged on the side of the first opening 42 away from the first area A1, so that the second opening 43 can be arranged closer to the edge position of the first organic layer 30, thereby further accommodating the organic material of the first organic layer 30 at the edge position with the help of the second opening 43, further reducing the overflow risk, and improving the yield rate and display reliability of the display module 100.

[0259] In some embodiments, Figure 1 and Fig.11 As shown, the first opening 42 has a first wall surface 421 facing the first area A1 , and the first wall surface 421 includes a first sub-surface 422 and a second sub-surface 423 that are connected and intersecting.

[0260] The first wall surface 421 is the side wall structure of the first opening 42 close to the first area A1. The first wall surface 421 includes a first sub-surface 422 and a second sub-surface 423. In conjunction with the accompanying drawings, the first sub-surface 422 and the second sub-surface 423 can both be inclined structures intersecting the second direction Y. In other words, the side wall structure of the first opening 42 close to the first area A1 is a folded surface structure composed of two inclined surface structures.

[0261] In the embodiment of the present application, by providing the first wall surface 421 with a folded surface structure, the organic material in the first organic layer 30 can more easily enter the first opening 42 along the first wall surface 421, thereby improving the first opening 42's accommodation effect on the organic material in the first organic layer 30 and reducing the overflow risk of the first organic layer 30.

[0262] It should be noted that the first wall surface 421 may include only the first sub-surface 422 and the second sub-surface 423, or the first wall surface 421 may also include other sub-surface structures that are intersected and connected to make the first wall surface 421 have a serrated structure, and the embodiment of the present application is not limited to this.

[0263] In addition, the side wall of the first opening 42 facing away from the first area A1 can also be set as a folded surface structure, so that it is difficult for the organic material in the first opening 42 to leave the first opening 42 along the wall structure, thereby improving the first opening 42 to accommodate the organic material in the first organic layer 30. Optionally, the orthographic projection of the first opening 42 on the substrate 10 is a diamond structure.

[0264] In some embodiments, Fig.11 As shown, the second opening 43 has a second wall surface 431 facing the first area A1 , and the second wall surface 431 includes a plurality of third sub-surfaces 432 and a plurality of fourth sub-surfaces 433 that are connected and arranged, and the third sub-surfaces 432 intersect with the fourth sub-surfaces 433 .

[0265] The second wall surface 431 is a side wall structure of the second opening 43 facing the first area A1, and the second wall surface 431 includes a plurality of third sub-surfaces 432 and a plurality of fourth sub-surfaces 433, and the plurality of third sub-surfaces 432 intersect and are alternately connected. In conjunction with the accompanying drawings, the plurality of third sub-surfaces 432 and the plurality of fourth sub-surfaces 433 are arranged side by side in the second direction Y, and there is a fourth sub-surface 433 between the two closest third sub-surfaces 432, and there is a third sub-surface 432 between the two closest fourth sub-surfaces 433. The presence of the plurality of third sub-surfaces 432 and the plurality of fourth sub-surfaces 433 makes the second wall surface 431 include a sawtooth structure.

[0266] In the embodiment of the present application, the second wall surface 431 is provided to include a third sub-surface 432 and a fourth sub-surface 433 that intersect and connect with each other, so that the organic material in the first organic layer 30 can more easily enter the second opening 43 along the second wall surface 431. Considering that the second opening 43 can have a large size in the second direction Y, the number of the third sub-surface 432 and the fourth sub-surface 433 is set to be multiple, so as to further reduce the difficulty of the organic material entering the second opening 43, and improve the second opening 43 The effect of accommodating the organic material in the first organic layer 30 is improved, and the overflow risk of the first organic layer 30 is reduced.

[0267] Alternatively, in some embodiments, the orthographic projection of the second wall surface 431 on the substrate 10 may also be wavy. This design can also make it easier for the organic material in the first organic layer 30 to enter the second opening 43 along the second wall surface 431, and improve the second opening 43's ability to accommodate the organic material in the first organic layer 30.

[0268] In some embodiments, in a direction approaching the first area A1 , the depth of the first opening 42 is gradually increased; and / or, the orthographic projection area of ​​the first opening 42 on the substrate 10 is gradually increased.

[0269] The “depth of the first opening 42 gradually increases in the direction close to the first area A1” mentioned in the embodiment of the present application means that the size of the first opening 42 in the thickness direction Z gradually increases in the direction close to the first area A1. In conjunction with the accompanying drawings, the “orthographic projection area of ​​the first opening 42 on the substrate 10 gradually increases” mentioned in the embodiment of the present application means that the size of the first opening 42 in the second direction Y gradually increases in the direction close to the first area A1.

[0270] In the embodiment of the present application, the size of the first opening 42 is adjusted, and the closer to the first area A1, the larger the size of the first opening 42 in the thickness direction Z or the second direction Y. This design can make it easier for the organic material located on the side of the first opening 42 close to the first area A1 to flow into the first opening 42. And if the size of the first opening 42 in the thickness direction Z gradually changes, the bottom wall of the first opening 42 can form a slope structure to limit the outflow of the organic material located in the first opening 42, and if the size of the first opening 42 in the second direction Y gradually changes, then in the direction away from the first area A1, the two opposite side walls of the second opening 43 in the second direction Y can gradually approach each other, which is also helpful to limit the outflow of the organic material in the first opening 42 and improve the reliability of the first opening 42 in blocking the overflow of the first organic layer 30.

[0271] In some embodiments, the first opening 42 penetrates the first functional layer 40 ; and / or the second opening 43 penetrates the first functional layer 40 .

[0272] In the embodiment of the present application, by setting at least one of the first opening 42 and the second opening 43 through the first functional layer 40, the depth of at least one of the first opening 42 and the second opening 43 can be increased, thereby increasing the capacity of at least one of the first opening 42 and the second opening 43 to accommodate organic materials, and further increasing the blocking and limiting effect of the first functional layer 40 on the first organic layer 30.

[0273] In some embodiments, the second area A2 is disposed around the first area A1, and the first sub-area A21 is disposed around the first area A1.

[0274] In combination with the above content, it can be known that the first sub-area A21 is an area in the second area A2 where the buffer unit 41 is arranged. The first sub-area A21 is arranged around the first area A1, which means that the buffer unit 41 is arranged around the first area A1. The buffer unit 41 includes a first opening 42 and a second opening 43. According to different actual needs, the first area A1 can be provided with the first opening 42 and the second opening 43 at one side of the first direction X, or only one of the first opening 42 and the second opening 43 can be provided. Similarly, the first area A1 can be provided with the first opening 42 and the second opening 43 at one side of the second direction Y, or only one of the first opening 42 and the second opening 43 can be provided.

[0275] In the embodiment of the present application, the first sub-area A21 is arranged around the first area A1, so that the buffer unit 41 can be located at different peripheral positions of the first area A1 along different directions, thereby improving the blocking and limiting effect of the buffer unit 41 on the first organic layer 30, thereby improving the yield rate and display reliability of the display module 100.

[0276] In some embodiments, a plurality of first openings 42 are disposed around the first area A1. In other words, a plurality of first openings 42 are disposed on both sides of the first area A1 in the first direction X, and a plurality of first openings 42 are disposed on both sides of the first area A1 in the second direction Y. This helps to increase the total number of the plurality of first openings 42 in the first functional layer 40, thereby improving the blocking and limiting effect of the first openings 42 on the first organic layer 30.

[0277] In some embodiments, the second opening 43 is an annular groove surrounding the first area A1. In other words, the first area A1 is provided with a partial structure of the second opening 43 on both sides in the first direction X, and the first area A1 is provided with a partial structure of the second opening 43 on both sides in the second direction Y, and the two partial structures are connected to each other. This design helps to increase the orthographic projection area of ​​the second opening 43 on the substrate 10, thereby improving the blocking and limiting effect of the second opening 43 on the first organic layer 30.

[0278] In some embodiments, the display module 100 further includes a dam structure DAM located in the second area A2 . The dam structure DAM is disposed around the first area A1 . The dam structure DAM is located between the first sub-area A21 and the first area A1 .

[0279] In combination with the above content, it can be known that the dam structure DAM is a structure used to prevent the organic encapsulation layer 52 from overflowing. In view of the difference in the corresponding edge positions of the organic encapsulation layer 52 and the first organic layer 30, the embodiment of the present application defines the position of the dam structure DAM relative to the first sub-area A21, so that the dam structure DAM is located on the side of the first sub-area A21 close to the first area A1, so that it corresponds to the edge position of the organic encapsulation layer 52. Considering that part of the structure in the first organic layer 30 can extend to the side of the dam structure DAM away from the first area A1, the buffer unit 41 in the first sub-area A21 is set on the side of the dam structure DAM away from the first area A1, so that it corresponds to the edge position of the first organic layer 30, thereby taking into account the overflow blocking needs of the display module 100 for different organic film layers.

[0280] In some embodiments, a maximum distance L3 between the second opening 43 away from the first area A1 and the dam structure DAM is less than or equal to 150 μm. Optionally, the maximum distance L3 between the two is one of 20 μm, 50 μm, 90 μm, 100 μm and 150 μm.

[0281] In the embodiment of the present application, considering that the size of the first organic layer 30 that exceeds the dam structure DAM is usually no more than 150 μm, the maximum distance L3 between the side of the second opening 43 away from the first area A1 and the dam structure DAM is set to be less than or equal to 150 μm, so that the second opening 43 can correspond to the edge position of the first organic layer 30, thereby improving the blocking and limiting effect of the second opening 43 on the first organic layer 30. Further optionally, the maximum distance between the side of the second opening 43 away from the first area A1 and the dam structure DAM is less than or equal to 100 μm.

[0282] Similarly, in some embodiments, the minimum distance L4 between the side of the first opening 42 close to the first area A1 and the bank is less than or equal to 60 μm. Optionally, the minimum distance L4 between the two is one of 20 μm, 30 μm, 40 μm, 50 μm and 60 μm.

[0283] In the embodiment of the present application, by setting the minimum distance L4 between the side of the first opening 42 close to the first area A1 and the dam to be less than or equal to 60 μm, the orthographic projection of the first opening 42 on the substrate 10 can be located within the orthographic projection of the first organic layer 30 on the substrate 10. In this way, the first opening 42 can accommodate more organic materials of the first organic layer 30, thereby improving its overflow limiting effect on the first organic layer 30.

[0284] In some optional embodiments, the maximum distance between the second opening 43 away from the first area A1 and the dam structure DAM is 90 μm, and the minimum distance between the first opening 42 close to the first area A1 and the dam is 40 μm.

[0285] In some embodiments, Fig.11 As shown, the orthographic projection of the first opening 42 on the substrate 10 is a rhombus, and the distance between two relatively parallel sides of the rhombus is L1, 6μm≤L1≤10μm. Optionally, L1 is one of 6μm, 7μm, 8μm, 9μm and 10μm.

[0286] In the embodiment of the present application, by providing a rhombus-shaped first opening 42 and setting the distance L1 to be no less than 6 μm and no more than 10 μm, it helps to reduce the difficulty of arranging multiple first openings 42 side by side, increase the overall number of first openings 42, and further enhance the blocking and limiting effect on the first organic layer 30 while meeting the layout requirements. Further optionally, L1=8 μm.

[0287] In some embodiments, the width of the second opening 43 is L2, 5μm≤L2≤25μm. Considering that the sidewall of the second opening 43 toward the first area A1 may be in a sawtooth shape, the width of the second opening 43 at different positions may be different. Among them, the width L2 of the second opening 43 at the narrowest position needs to be no less than 5μm, and the width L2 at the widest position needs to be no more than 25μm.

[0288] In the embodiment of the present application, by setting L2 to not less than 5 μm, the second opening 43 can have a certain width dimension to improve its capacity to accommodate organic materials. At the same time, L2 is set to not more than 25 μm, thereby reducing the interference between the second opening 43 and other structures. For example, this size design can meet the spacing requirements between the first opening 42 and the second opening 43, thereby improving the reliability of the internal layout of the display module 100. Optionally, the width L2 of the second opening 43 at the widest position is 19 μm, and the width L2 of the second opening 43 at the narrowest position is 8 μm.

[0289] In some embodiments, see Fig.12 The first functional layer 40 further includes a third opening 44 located in the second area A2, the orthographic projection size of the third opening 44 on the substrate 10 is larger than the orthographic projection size of the first opening 42 on the substrate 10, and the third opening 44 is located on the side of the buffer unit 41 away from the first area A1.

[0290] Considering the influence of the manufacturing precision, the buffer unit 41 may not completely prevent the overflow of the first organic layer 30, or the first organic layer 30 may be designed to extend to the side of the buffer unit 41 away from the first area A1 in some areas of the display module 100. In these cases, in order to reduce the risk of overflow of the first organic layer 30, the display module 100 is additionally provided with a third opening 44, which is located on the side of the buffer unit 41 away from the first area A1, and the third opening 44 can also be used to accommodate organic materials, thereby reducing the risk of overflow of the first organic layer 30 and improving the yield rate and display reliability of the display module 100.

[0291] The embodiment of the present application does not limit the shape and size of the third opening 44. The third opening 44 may include an annular groove surrounding the first area A1 like the second opening 43, or the third opening 44 may be located only at a local position around the first area A1.

[0292] In some embodiments, Fig.12 As shown, the display module 100 also includes a first conductive layer 70 arranged between the first functional layer 40 and the light-emitting functional layer 20, a conductive portion 81 located between the first conductive layer 70 and the light-emitting functional layer 20, and an insulating layer 90 located between the conductive portion 81 and the first functional layer 40; wherein, the first conductive layer 70 includes a first conductive portion 71, the conductive portion 81 is electrically connected to the first conductive portion 71, and the orthographic projections of the conductive portion 81 and the insulating layer 90 on the substrate 10 both overlap with the orthographic projection of the buffer unit 41 on the substrate 10.

[0293] The first conductive portion 71 is a structure including a conductor material or a semiconductor material located in the first conductive layer 70. The first conductive portion 71 is partially located in the first area A1 and partially located in the second area A2. In combination with the above content, it can be known that the orthographic projection of the first conductive layer 70 on the substrate 10 is located outside the orthographic projection of the buffer unit 41 on the substrate 10. Therefore, optionally, the first conductive portion 71 includes a first portion 711 and a second portion 712 respectively arranged on both sides of the buffer unit 41, the first portion 711 extends from the first area A1 to the second area A2, and the first portion 711 is connected to the second portion 712 through the conductive portion 81.

[0294] The second part 712 needs to be electrically connected to the driver chip or circuit board structure to meet the corresponding driving needs. In addition, the second part 712 needs to be connected to the first part 711 by circuit. In order to achieve the electrical connection between the first part 711 and the second part 712 to meet the signal transmission needs, the embodiment of the present application additionally adds a conductive part 81, which includes a conductor material or a semiconductor material, and the conductive part 81 can be respectively contacted and connected with the first part 711 and the second part 712, so that the first part 711 and the second part 712 can achieve signal transmission through the conductive part 81.

[0295] It should be noted that the conducting portion 81 may have a variety of material compositions, for example, the conducting portion 81 may include the same material as the first conducting portion 71, or may include different materials. Furthermore, the conducting portion 81 may be located on the side of the first conductor layer facing the substrate 10, that is, the conducting portion 81 is prepared before the first conductor layer is formed, or the conducting portion 81 may be located on the side of the first conductor layer away from the substrate 10, that is, the conducting portion 81 is prepared after the first conductor layer is formed, and the embodiments of the present application are not limited to this.

[0296] Furthermore, considering that the orthographic projection of the conductive part 81 on the substrate 10 will overlap with the orthographic projection of the buffer unit 41 on the substrate 10, in order to reduce the exposure degree of the conductive part 81 at the buffer unit 41, the embodiment of the present application further provides a protective part 91, and the protective part 91 is located on the side of the conductive part 81 away from the substrate 10, and the orthographic projection of the protective part 91 on the substrate 10 will also overlap with the orthographic projection of the buffer unit 41 on the substrate 10, so that the protective part 91 can replace the conductive part 81 to be exposed relative to the buffer unit 41, thereby achieving a covering and protecting effect on the conductive part 81, thereby helping to improve the reliability of signal transmission among the first part 711, the second part 712 and the conductive part 81.

[0297] In summary, in the embodiment of the present application, the conducting part 81 can replace the first conducting part 71 and overlap with the buffer unit 41 while meeting the electrical connection requirements between different structures in the first conducting part 71, so as to protect the first conductor layer. Furthermore, the protection part 91 is also overlapped with the buffer unit 41, and the protection part 91 is also located on the side of the conducting part 81 away from the substrate 10, so that the protection part 91 can cover and protect the partial structure of the conducting part 81 corresponding to the buffer unit 41, so as to improve the signal transmission reliability among the first part 711, the second part 712 and the conducting part 81.

[0298] In some embodiments, the display module 100 further includes a pad structure PAD located in the second area A2 . The pad structure PAD is located on a side of the buffer unit 41 away from the first area A1 . The second portion 712 is connected to the pad structure PAD.

[0299] The pad structure PAD is a metal area in the display module 100. The display module 100 is connected and fixed to the electronic components by welding at the location of the pad structure PAD to achieve electrical connection between some conductive structures in the display module 100 and the electrical components. The second portion 712 is connected to the pad structure PAD, that is, the second portion 712 can be connected to the electronic components through the pad structure PAD. Optionally, the second portion 712 can be electrically connected to the driver chip through the pad structure PAD.

[0300] In the embodiment of the present application, the driver chip or other electronic components need to transmit the corresponding driving signal to the first area A1 through the second part 712 and the first part 711, or the first part 711 needs to feed back a specific signal to the driver chip or other electronic components through the second part 712. On this basis, in order to meet the signal transmission needs between the two and reduce the adverse effects of the buffer unit 41 on the first conductor layer, a conducting part 81 and a protective part 91 are added to the display module 100, and the signal transmission between the first part 711 and the second part 712 is realized through the conducting part 81, and the covering protection effect of the partial structure of the conducting part 81 corresponding to the buffer unit 41 is realized through the protective part 91, so as to improve the signal transmission reliability among the first part 711, the second part 712 and the conducting part 81.

[0301] In some embodiments, the orthographic projection of the third opening 44 on the substrate 10 is located on one side of the orthographic projection of the second portion 712 on the substrate 10. In conjunction with the drawings, the orthographic projection of the third opening 44 on the substrate 10 may be located along the second direction Y on one side of the orthographic projection of the second portion 712 on the substrate 10.

[0302] Taking the area including the pad structure PAD in the second area A2 as the lower frame of the display module 100 as an example, the embodiment of the present application is provided with at least part of the structure in the third opening 44 at the lower frame area, and the orthographic projection of the part of the structure on the substrate 10 is arranged on the side of the orthographic projection of the second part 712 on the substrate 10, so that the orthographic projection of the second part 712 and the pad structure PAD on the substrate 10 are both located outside the orthographic projection of the third opening 44 on the substrate 10, thereby reducing the possibility of the second part 712 and the pad structure PAD being exposed relative to the third opening 44, and reducing the risk of corrosion of the second part 712 and the pad structure PAD. In addition, the part of the structure located at the lower frame in the third opening 44 can reduce the risk of overflow of the first organic layer 30 at the lower frame area, change the white spot problem of the lower frame appearance, and improve the yield and display reliability of the display module 100.

[0303] Further optionally, the first conductive portion 71 can be used to transmit touch signals. On this basis, this layout design of the third opening 44 can reduce the risk of overflow of the first organic layer 30 in the lower frame area while improving the reliability of touch signal transmission and improving the touch accuracy of the display module 100.

[0304] In some optional embodiments, the third opening 44 is extended in a direction away from the second portion 712. In conjunction with the accompanying drawings, the third opening 44 extends from one side of the second portion 712 in the second direction Y to a direction away from the second portion 712, so that the orthographic projection of the third opening 44 on the substrate 10 can be staggered with the orthographic projection of the second portion 712 and the pad structure PAD on the substrate 10, thereby reducing the possibility of exposure of the second portion 712 and the pad structure PAD relative to the third opening 44 and reducing the risk of corrosion of the second portion 712 and the pad structure PAD.

[0305] In some embodiments, two third openings 44 are provided, and the two third openings 44 are respectively located on two opposite sides of the second portion 712 .

[0306] In the embodiment of the present application, considering that there is a certain amount of space corresponding to both sides of the second part 712 in the second direction Y, the third opening 44 is set to two, and the two third openings 44 are arranged on both sides of the second part 712 along the second direction Y. In this way, while meeting the need for the third opening 44 to be staggered relative to the second part 712, the positive projection area of ​​the third opening 44 on the substrate 10 is increased.

[0307] It should be noted that the third openings 44 on both sides of the second portion 712 may be independently provided, or may be interconnected through other third openings 44. Optionally, the orthographic projection of the third opening 44 on the substrate 10 is in a rectangular or racetrack shape.

[0308] Specifically, when the third openings 44 on both sides of the second portion 712 are independently arranged, the two third openings 44 may be independent rectangular structures. In another case, some of the third openings 44 may also be located on both sides of the first area A1 along the second direction Y, and connected to the two third openings 44 on both sides of the second portion 712. In this design, the orthographic projection of the third opening 44 on the substrate 10 is a racetrack structure, and the two third openings 44 on both sides of the second portion 712 are connected to each other through other third openings 44.

[0309] In some embodiments, an orthographic projection area of ​​the third opening 44 on the substrate 10 is larger than an orthographic projection area of ​​the first opening 42 on the substrate 10 .

[0310] In the embodiment of the present application, in order to enhance the capacity of the third opening 44 to accommodate organic materials and thereby reduce the risk of overflow of the first organic layer 30, the orthographic projection area of ​​the third opening 42 on the substrate 10 is set to be larger than the orthographic projection area of ​​the first opening 42 on the substrate 10. In this way, it is difficult for the first organic layer 30 to cross the third opening 44 and overflow, thereby helping to improve the yield rate and display reliability of the display module 100.

[0311] In some embodiments, the third opening 44 penetrates the first functional layer 40, that is, the third opening 44 is a through-hole structure. This design helps to increase the depth of the third opening 44 and improve the third opening 44's ability to accommodate organic materials, thereby further reducing the overflow risk of the first organic layer 30 and improving the yield and display reliability of the display module 100.

[0312] Second, as Figures 1 to 5 as well as Fig.12 As shown, the embodiment of the present application provides a display module 100, the display module 100 has a local first area A1 and a second area A2 surrounding the first area A1, the display module 100 includes a substrate 10, a light-emitting functional layer 20, a first functional layer 40 and a first organic layer 30, the light-emitting functional layer 20 is arranged on one side of the substrate 10, the first functional layer 40 is arranged between the first organic layer 30 and the light-emitting functional layer 20, the first functional layer 40 includes a buffer unit 41 and a third opening 44 located in the second area A2, the buffer unit 41 is arranged around the first area A1, and the third opening 44 is located on the side of the buffer unit 41 away from the first area A1. The first organic layer 30 is arranged on the side of the light-emitting functional layer 20 away from the substrate 10, and extends from the first area A1 to the second area A2.

[0313] The display module 100 is a device structure for realizing a display function. The display module 100 has a first area A1 and a second area A2 surrounding the first area A1. The first area A1 may be an area in the display module 100 for realizing a display effect, and the second area A2 is a frame area located on the outer peripheral side of the first area A1. Optionally, the second area A2 is arranged around the first area A1, and the shapes of the first area A1 and the second area A2 match, for example, the first area A1 is a square structure, and the second area A2 is a square ring structure.

[0314] The substrate 10 is a structure of the display module 100 for carrying other film layers. Part of the structure in the substrate 10 is located in the first area A1, and part of the structure is located in the second area A2. Other film layers can be stacked on one side of the substrate 10 along the thickness direction Z of the substrate 10, wherein the thickness direction Z of the substrate 10, the thickness direction Z of other film layers, and the thickness direction Z of the display module 100 as a whole are usually arranged parallel to each other. Therefore, in order to facilitate understanding, in the drawings, the thickness direction Z of the substrate 10, the thickness direction Z of other film layers, and the thickness direction Z of the display module 100 as a whole are all indicated in the same direction.

[0315] The light-emitting functional layer 20 is a film structure used to realize the display light-emitting needs in the display module 100, and the light-emitting functional layer 20 is usually only arranged in the first area A1. The light-emitting functional layer 20 may include multiple film structures, for example, the light-emitting functional layer 20 may include a light-emitting layer, a hole transport layer and a hole injection layer located on one side of the light-emitting layer, and an electron transport layer and an electron injection layer located on the other side of the light-emitting layer, and the light-emitting functional layer 20 may include multiple light-emitting layers. If the light-emitting functional layer 20 includes multiple light-emitting layers, a charge generation layer may also be arranged between adjacent light-emitting layers. Among them, the hole injection layer, the hole transport layer, the electron injection layer, the electron transport layer, and the charge generation layer may all be common layers with a whole-surface structure.

[0316] In addition, the light-emitting functional layer 20 can be limited to form a plurality of light-emitting units 21, and at least some of the different light-emitting units 21 emit light of different colors to achieve the multi-color display requirements of the display module 100. Optionally, the plurality of light-emitting units 21 include at least one of a red light-emitting unit for emitting red light, a blue light-emitting unit for emitting blue light, and a green light-emitting unit for emitting green light.

[0317] The first organic layer 30 is a functional film layer disposed on the side of the light-emitting functional layer 20 facing away from the substrate 10 and including an organic material. The first organic layer 30 is partially located in the first area A1 and partially located in the second area A2. The first functional layer 40 is a functional film layer disposed on the side of the first organic layer 30 facing the substrate 10. The first functional layer 40 is at least partially located in the second area A2, that is, the first functional layer 40 can be completely located in the second area A2, or the first functional layer 40 can also be partially located in the second area A2 and partially located in the first area A1. The embodiment of the present application does not limit the material composition of the first organic layer 30. Optionally, the first organic layer 30 can include an organic ink material.

[0318] The first functional layer 40 is arranged on the side of the first organic layer 30 facing the substrate 10, that is, during the preparation process of the display module 100, the preparation of the first functional layer 40 is formed before the first organic layer 30. Furthermore, the first functional layer 40 includes a buffer unit 41, and the buffer unit 41 is a structure in the first functional layer 40 that can block the overflow of the organic material to achieve a buffering effect, and the buffer unit 41 is arranged in the second area A2. Among them, the buffer unit 41 can have a variety of forms, and the embodiments of the present application are not limited to this. For example, the buffer unit 41 may include a porous structure, and the organic material can flow and embed into the porous structure to achieve a blocking and limiting effect. Or the buffer unit 41 may include a protruding structure, and the organic material can be blocked by the protruding structure, thereby achieving a medium blocking and limiting effect.

[0319] The buffer unit 41 is arranged around the first area A1, that is, the buffer unit 41 can be arranged at different peripheral areas of the first area A1, so that the first organic layer 30 extending from different sides of the first area A1 can be blocked and limited by the buffer unit 41, thereby improving the reliability of different peripheral positions of the first area A1.

[0320] Furthermore, considering the influence of the manufacturing precision, the buffer unit 41 may not completely prevent the overflow of the first organic layer 30, or the first organic layer 30 may be designed to extend to the side of the buffer unit 41 away from the first area A1 in certain areas of the display module 100. In these cases, in order to reduce the risk of overflow of the first organic layer 30, the display module 100 is further provided with a third opening 44, which is located on the side of the buffer unit 41 away from the first area A1, and the third opening 44 can also be used to accommodate organic materials, thereby reducing the risk of overflow of the first organic layer 30 and improving the yield rate and display reliability of the display module 100.

[0321] The embodiment of the present application does not limit the shape and size of the third opening 44. The third opening 44 can be disposed around the first area A1 like the buffer unit 41, or the third opening 44 is only located at a local position around the first area A1.

[0322] It should be noted that the embodiments of the present application do not limit the specific functional effects of the first organic layer 30 and the first functional layer 40 in the display module 100. For example, the first functional layer 40 can be used only to block and limit the first organic layer 30, or the first functional layer 40 can have other effects in addition to blocking overflow. On this basis, the first functional layer 40 can be a functional film layer that exists in the relevant technology, or it can be a new film layer structure that is additionally added in the embodiments of the present application to achieve the blocking and limiting effect.

[0323] In addition, the specific film layer position of the first organic layer 30 and the first functional layer 40 in the display module 100 is not limited in the embodiment of the present application. For example, the first functional layer 40 can be located on the side of the light-emitting functional layer 20 facing the substrate 10, or can also be located on the side of the light-emitting functional layer 20 away from the substrate 10, and the first functional layer 40 and the first organic layer 30 can be directly contacted, or there can be other film layers between the two. As long as it is satisfied that it is within the second area A2, the buffer unit 41 in the first functional layer 40 can directly or indirectly block the overflow of the organic material in the first organic layer 30.

[0324] In the embodiment of the present application, the buffer unit 41 and the third opening 44 can both accommodate organic materials. Therefore, with the help of the cooperation between the buffer unit 41 and the third opening 44, it is helpful to further improve the blocking and limiting effect of the first functional layer 40 on the first organic layer 30, improve the distribution uniformity of the first organic layer 30, reduce the possibility of bubbles appearing in the display module 100 in the second area A2, improve the white spot problem of the frame, and improve the preparation yield and display reliability of the display module 100.

[0325] In some embodiments, the buffer unit 41 includes a plurality of first openings 42 , and the plurality of first openings 42 are arranged in an array.

[0326] The buffer unit 41 includes a first opening 42, which is formed by a surface depression of the first functional layer 40 away from the substrate 10. The first opening 42 can be completely set through the first functional layer 40, or the size of the first opening 42 in the thickness direction Z can also be smaller than the size of the first functional layer 40 in the thickness direction Z. There are multiple first openings 42, and the orthographic projection shapes and sizes of different first openings 42 on the substrate 10 are basically consistent.

[0327] A plurality of first openings 42 are arranged in an array, and optionally, some of the first openings 42 are arranged side by side along the first direction X, and some of the first openings 42 are arranged side by side along the second direction Y, and the first direction X, the second direction Y, and the thickness direction Z intersect each other. Further optionally, the first direction X, the second direction Y, and the thickness direction Z are perpendicular to each other.

[0328] In the embodiment of the present application, a plurality of first openings 42 are provided so that the projection of at least part of the structure in the first functional layer 40 on the substrate 10 is in a grid shape, and the design of the plurality of first openings 42 helps to improve its capacity for accommodating the organic material in the first organic layer 30, thereby further reducing the overflow risk of the first organic layer 30 and improving the yield rate and display reliability of the display module 100.

[0329] In some embodiments, a plurality of first openings 42 are disposed around the first area A1. In other words, a plurality of first openings 42 are disposed on both sides of the first area A1 in the first direction X, and a plurality of first openings 42 are disposed on both sides of the first area A1 in the second direction Y. This helps to increase the total number of the plurality of first openings 42 in the first functional layer 40, thereby improving the blocking and limiting effect of the first openings 42 on the first organic layer 30.

[0330] In some embodiments, the shape of the orthographic projection of the first opening 42 on the substrate 10 includes at least one of a circle, a triangle, a diamond, a rectangle, and a polygon.

[0331] In the embodiment of the present application, the size and shape of the first opening 42 can be flexibly adjusted according to different actual needs to meet the needs of array arrangement of multiple first openings 42, or to achieve the need to avoid the first opening 42 relative to other structures, or to improve the blocking and limiting effect of a single first opening 42 on the first organic layer 30, which has strong flexibility and practicality.

[0332] In some embodiments, the buffer unit 41 further includes a second opening 43 , and an orthographic projection area of ​​the second opening 43 on the substrate 10 is larger than an orthographic projection area of ​​the first opening 42 on the substrate 10 .

[0333] The second opening 43 and the first opening 42 are both located in the second area A2, except that the area of ​​the orthographic projection of the second opening 43 on the substrate 10 is larger than the area of ​​the orthographic projection of the first opening 42 on the substrate 10. The orthographic projection shape of the first opening 42 on the substrate 10 may be the same as the orthographic projection shape of the second opening 43 on the substrate 10, or may be different. And according to different actual needs, only one second opening 43 may be provided, or multiple second openings 43 may be provided. Fig.12 FIG. 4 shows a case where only one second opening 43 is provided.

[0334] In the embodiment of the present application, by simultaneously providing a first opening 42 and a second opening 43 in the first functional layer 40 , both the first opening 42 and the second opening 43 can accommodate part of the organic material in the first organic layer 30 , thereby improving the blocking and limiting effect on the first organic layer 30 in the first sub-area A21 .

[0335] In some embodiments, the second opening 43 is located at a side of the first opening 42 away from the first area A1 .

[0336] In the embodiment of the present application, considering that the second opening 43 can have a larger orthographic projection area than the first opening 42, the second opening 43 is arranged on the side of the first opening 42 away from the first area A1, so that the second opening 43 can be arranged closer to the edge position of the first organic layer 30, thereby further accommodating the organic material of the first organic layer 30 at the edge position with the help of the second opening 43, further reducing the overflow risk, and improving the yield rate and display reliability of the display module 100.

[0337] In some embodiments, the first opening 42 has a first wall surface 421 facing the first area A1 , and the first wall surface 421 includes a first sub-surface 422 and a second sub-surface 423 that are connected and intersecting.

[0338] The first wall surface 421 is the side wall structure of the first opening 42 close to the first area A1. The first wall surface 421 includes a first sub-surface 422 and a second sub-surface 423. In conjunction with the accompanying drawings, the first sub-surface 422 and the second sub-surface 423 can both be inclined structures intersecting the second direction Y. In other words, the side wall structure of the first opening 42 close to the first area A1 is a folded surface structure composed of two inclined surface structures.

[0339] In the embodiment of the present application, by providing the first wall surface 421 with a folded surface structure, the organic material in the first organic layer 30 can more easily enter the first opening 42 along the first wall surface 421, thereby improving the first opening 42's accommodation effect on the organic material in the first organic layer 30 and reducing the overflow risk of the first organic layer 30.

[0340] It should be noted that the first wall surface 421 may include only the first sub-surface 422 and the second sub-surface 423, or the first wall surface 421 may also include other sub-surface structures that are intersected and connected to make the first wall surface 421 have a serrated structure, and the embodiment of the present application is not limited to this.

[0341] In addition, the side wall of the first opening 42 facing away from the first area A1 can also be set as a folded surface structure, so that it is difficult for the organic material in the first opening 42 to leave the first opening 42 along the wall structure, thereby improving the first opening 42 to accommodate the organic material in the first organic layer 30. Optionally, the orthographic projection of the first opening 42 on the substrate 10 is a diamond structure.

[0342] In some embodiments, the second opening 43 has a second wall surface 431 facing the first area A1 , and the second wall surface 431 includes a plurality of third sub-surfaces 432 and a plurality of fourth sub-surfaces 433 that are connected to each other, and the third sub-surfaces 432 intersect with the fourth sub-surfaces 433 .

[0343] The second wall surface 431 is a side wall structure of the second opening 43 facing the first area A1, and the second wall surface 431 includes a plurality of third sub-surfaces 432 and a plurality of fourth sub-surfaces 433, and the plurality of third sub-surfaces 432 intersect and are alternately connected. In conjunction with the accompanying drawings, the plurality of third sub-surfaces 432 and the plurality of fourth sub-surfaces 433 are arranged side by side in the second direction Y, and there is a fourth sub-surface 433 between the two closest third sub-surfaces 432, and there is a third sub-surface 432 between the two closest fourth sub-surfaces 433. The presence of the plurality of third sub-surfaces 432 and the plurality of fourth sub-surfaces 433 makes the second wall surface 431 include a sawtooth structure.

[0344] In the embodiment of the present application, the second wall surface 431 is provided to include a third sub-surface 432 and a fourth sub-surface 433 that intersect and connect with each other, so that the organic material in the first organic layer 30 can more easily enter the second opening 43 along the second wall surface 431. Considering that the second opening 43 can have a large size in the second direction Y, the number of the third sub-surface 432 and the fourth sub-surface 433 is set to be multiple, so as to further reduce the difficulty of the organic material entering the second opening 43, and improve the second opening 43 The effect of accommodating the organic material in the first organic layer 30 is improved, and the overflow risk of the first organic layer 30 is reduced.

[0345] Alternatively, in some embodiments, the orthographic projection of the second wall surface 431 on the substrate 10 may also be wavy. This design can also make it easier for the organic material in the first organic layer 30 to enter the second opening 43 along the second wall surface 431, and improve the second opening 43's ability to accommodate the organic material in the first organic layer 30.

[0346] In some embodiments, in a direction approaching the first area A1 , the depth of the first opening 42 is gradually increased; and / or, the orthographic projection area of ​​the first opening 42 on the substrate 10 is gradually increased.

[0347] The “depth of the first opening 42 gradually increases in the direction close to the first area A1” mentioned in the embodiment of the present application means that the size of the first opening 42 in the thickness direction Z gradually increases in the direction close to the first area A1. In conjunction with the accompanying drawings, the “orthographic projection area of ​​the first opening 42 on the substrate 10 gradually increases” mentioned in the embodiment of the present application means that the size of the first opening 42 in the second direction Y gradually increases in the direction close to the first area A1.

[0348] In the embodiment of the present application, the size of the first opening 42 is adjusted, and the closer to the first area A1, the larger the size of the first opening 42 in the thickness direction Z or the second direction Y. This design can make it easier for the organic material located on the side of the first opening 42 close to the first area A1 to flow into the first opening 42. And if the size of the first opening 42 in the thickness direction Z gradually changes, the bottom wall of the first opening 42 can form a slope structure to limit the outflow of the organic material located in the first opening 42, and if the size of the first opening 42 in the second direction Y gradually changes, then in the direction away from the first area A1, the two opposite side walls of the second opening 43 in the second direction Y can gradually approach each other, which is also helpful to limit the outflow of the organic material in the first opening 42 and improve the reliability of the first opening 42 in blocking the overflow of the first organic layer 30.

[0349] In some embodiments, the first opening 42 penetrates the first functional layer 40 ; and / or the second opening 43 penetrates the first functional layer 40 ; and / or the third opening 44 penetrates the first functional layer 40 .

[0350] In the embodiment of the present application, by setting at least one of the first opening 42, the second opening 43 and the third opening 44 through the first functional layer 40, the depth of at least one of the first opening 42, the second opening 43 and the third opening 44 can be increased, thereby increasing the capacity of at least one of the first opening 42, the second opening 43 and the third opening 44 to accommodate organic materials, and further improving the blocking and limiting effect of the first functional layer 40 on the first organic layer 30.

[0351] In some embodiments, the display module 100 further includes a dam structure DAM located in the second area A2 . The dam structure DAM is disposed around the first area A1 . The dam structure DAM is located between the buffer unit 41 and the first area A1 .

[0352] The dam structure DAM is a structure used to prevent the organic encapsulation layer 52 from overflowing. In view of the difference in the corresponding edge positions of the organic encapsulation layer 52 and the first organic layer 30, the embodiment of the present application defines the position of the dam structure DAM relative to the buffer unit 41, so that the dam structure DAM is located on the side of the buffer unit 41 close to the first area A1, so that it corresponds to the edge position of the organic encapsulation layer 52. Considering that part of the structure in the first organic layer 30 can extend to the side of the dam structure DAM away from the first area A1, the buffer unit 41 is set on the side of the dam structure DAM away from the first area A1, so that it corresponds to the edge position of the first organic layer 30, so as to take into account the overflow blocking needs of the display module 100 for different organic film layers.

[0353] In some embodiments, Fig.12 As shown, the maximum distance between the side of the second opening 43 away from the first area A1 and the dam structure DAM is less than or equal to 150 μm. Optionally, the maximum distance between the two is one of 20 μm, 50 μm, 90 μm, 100 μm and 150 μm.

[0354] In the embodiment of the present application, considering that the size of the first organic layer 30 that exceeds the dam structure DAM is usually no more than 150 μm, the maximum distance between the side of the second opening 43 away from the first area A1 and the dam structure DAM is set to be less than or equal to 150 μm, so that the second opening 43 can correspond to the edge position of the first organic layer 30, thereby improving the blocking and limiting effect of the second opening 43 on the first organic layer 30. Further optionally, the maximum distance between the side of the second opening 43 away from the first area A1 and the dam structure DAM is less than or equal to 100 μm.

[0355] Similarly, in some embodiments, the minimum distance between the side of the first opening 42 close to the first region A1 and the bank is less than or equal to 60 μm. Optionally, the minimum distance between the two is one of 20 μm, 30 μm, 40 μm, 50 μm and 60 μm.

[0356] In the embodiment of the present application, the minimum distance between the side of the first opening 42 close to the first area A1 and the dam is set to be less than or equal to 60 μm, so that the orthographic projection of the first opening 42 on the substrate 10 can be located within the orthographic projection of the first organic layer 30 on the substrate 10. In this way, the first opening 42 can accommodate more organic materials of the first organic layer 30, thereby improving its overflow limiting effect on the first organic layer 30.

[0357] In some optional embodiments, the maximum distance between the second opening 43 away from the first area A1 and the dam structure DAM is 90 μm, and the minimum distance between the first opening 42 close to the first area A1 and the dam is 40 μm.

[0358] In some embodiments, the orthographic projection of the first opening 42 on the substrate 10 is a rhombus, the distance between two relatively parallel sides of the rhombus is L1, 6μm≤L1≤10μm. Optionally, L1 is one of 6μm, 7μm, 8μm, 9μm and 10μm.

[0359] In the embodiment of the present application, by providing a rhombus-shaped first opening 42 and setting the distance L1 to be no less than 6 μm and no more than 10 μm, it helps to reduce the difficulty of arranging multiple first openings 42 side by side, increase the overall number of first openings 42, and further enhance the blocking and limiting effect on the first organic layer 30 while meeting the layout requirements. Further optionally, L1=8 μm.

[0360] In some embodiments, the width of the second opening 43 is L2, 5μm≤L2≤25μm. Considering that the sidewall of the second opening 43 toward the first area A1 may be in a sawtooth shape, the width of the second opening 43 at different positions may be different. Among them, the width L2 of the second opening 43 at the narrowest position needs to be no less than 5μm, and the width L2 at the widest position needs to be no more than 25μm.

[0361] In the embodiment of the present application, by setting L2 to not less than 5 μm, the second opening 43 can have a certain width dimension to improve its capacity to accommodate organic materials. At the same time, L2 is set to not more than 25 μm, thereby reducing the interference between the second opening 43 and other structures. For example, this size design can meet the spacing requirements between the first opening 42 and the second opening 43, thereby improving the reliability of the internal layout of the display module 100. Optionally, the width L2 of the second opening 43 at the widest position is 19 μm, and the width L2 of the second opening 43 at the narrowest position is 8 μm.

[0362] In some embodiments, the display module 100 includes a touch layer TP arranged between the first functional layer 40 and the light-emitting functional layer 20, and the touch layer TP includes a first conductive layer 70, a second conductive layer 80, and an insulating layer 90 located between the first conductive layer 70 and the second conductive layer 80; wherein the first conductive layer 70 includes a first conductive part 71, the second conductive layer includes a conductive part 81, the conductive part 81 is connected to the first conductive part 71, and the orthographic projection of the conductive part 81 on the substrate 10 overlaps with the orthographic projection of the buffer unit 41 on the substrate 10.

[0363] The first conductive layer 70 and the second conductive layer 80 are both conductive film layers for transmitting touch signals, and the insulating layer 90 is a film layer structure including insulating materials in the display module 100 and used to separate the first conductive layer 70 from the second conductive layer 80. The first conductive layer 70 and the second conductive layer 80 are stacked in the thickness direction Z, wherein the first conductive layer 70 is located on a side of the second conductive layer 80 close to the first functional layer 40, that is, the first conductive layer 70 is arranged closer to the first functional layer 40 than the second conductive layer 80.

[0364] The first conductive part 71 is a structure including a conductor material or a semiconductor material located in the first conductive layer 70. The first conductive part 71 is partially located in the first area A1 and partially located in the second area A2. In combination with the foregoing, it can be seen that the orthographic projection of the first conductive layer 70 on the substrate 10 is located outside the orthographic projection of the buffer unit 41 on the substrate 10. Therefore, optionally, the first conductive part 71 includes a first part 711 and a second part 712 respectively arranged on both sides of the buffer unit 41, and the first part 711 extends from the first area A1 to the second area A2, and the first part 711 is connected to the second part 712 through the conductive part 81. Among them, the second part 712 needs to be electrically connected to the driver chip or circuit board structure to meet the corresponding driving needs.

[0365] On this basis, in order to achieve electrical connection between the first part 711 and the second part 712 to meet the needs of signal transmission, the embodiment of the present application additionally adds a conductive part 81, and the conductive part 81 includes a conductor material or a semiconductor material, and the conductive part 81 can be respectively contacted and connected with the first part 711 and the second part 712, so that the first part 711 and the second part 712 can achieve signal transmission through the conductive part 81.

[0366] It should be noted that the conducting portion 81 may have a variety of material compositions, for example, the conducting portion 81 may include the same material as the first conducting portion 71, or may include different materials. Furthermore, the conducting portion 81 may be located on the side of the first conductor layer facing the substrate 10, that is, the conducting portion 81 is prepared before the first conductor layer is formed, or the conducting portion 81 may be located on the side of the first conductor layer away from the substrate 10, that is, the conducting portion 81 is prepared after the first conductor layer is formed, and the embodiments of the present application are not limited to this.

[0367] In the embodiment of the present application, the conducting portion 81 can replace the first conductive portion 71 and overlap with the buffer unit 41 to meet the electrical connection requirements between different structures in the first conductive portion 71, thereby protecting the first conductor layer.

[0368] In some optional embodiments, considering that the orthographic projection of the conductive part 81 on the substrate 10 will overlap with the orthographic projection of the buffer unit 41 on the substrate 10, in order to reduce the exposure degree of the conductive part 81 at the buffer unit 41, the display module 100 may further be provided with a protective part 91, and the protective part 91 is located on the side of the conductive part 81 away from the substrate 10, and the orthographic projection of the protective part 91 on the substrate 10 will also overlap with the orthographic projection of the buffer unit 41 on the substrate 10, so that the protective part 91 can replace the conductive part 81 to be exposed relative to the buffer unit 41, thereby playing a covering and protecting effect on the conductive part 81, thereby helping to improve the reliability of signal transmission among the first part 711, the second part 712 and the conductive part 81.

[0369] Further optionally, the protection portion 91 is located inside the insulating layer 90 .

[0370] In the related art, since one of the two conductive layers of the touch layer TP that is relatively close to the substrate 10 is usually only disposed in the display area of ​​the display module 100 , the insulating film layer between the two conductive layers is also also only disposed in the display area of ​​the display module 100 .

[0371] In the embodiment of the present application, since the structure of the second conductive layer 80 is adjusted to include the conductive portion 81 located in the second area A2, in order to protect the conductive portion 81, the structure of the insulating layer 90 is also adjusted to include the protective portion 91 provided corresponding to the conductive portion 81, thereby achieving the protective effect on the conductive portion 81 while meeting the insulation requirements of the first conductive layer 70 and the second conductive layer 80. At the same time, under this design, the display module 100 does not need to add other film layers for setting the protective portion 91, which helps to achieve a lightweight design.

[0372] In some embodiments, the display module 100 further includes a pad structure PAD located in the second area A2 . The pad structure PAD is located on a side of the buffer unit 41 away from the first area A1 . The second portion 712 is connected to the pad structure PAD.

[0373] The pad structure PAD is a metal area in the display module 100. The display module 100 is connected and fixed to the electronic components by welding at the location of the pad structure PAD to achieve electrical connection between some conductive structures in the display module 100 and the electrical components. The second portion 712 is connected to the pad structure PAD, that is, the second portion 712 can be connected to the electronic components through the pad structure PAD. Optionally, the second portion 712 can be electrically connected to the driver chip through the pad structure PAD.

[0374] In the embodiment of the present application, the driver chip or other electronic components need to transmit the corresponding driving signal to the first area A1 through the second part 712 and the first part 711, or the first part 711 needs to feed back a specific signal to the driver chip or other electronic components through the second part 712. On this basis, in order to meet the signal transmission needs between the two and reduce the adverse effects of the buffer unit 41 on the first conductor layer, a conducting part 81 and a protective part 91 are added to the display module 100, and the signal transmission between the first part 711 and the second part 712 is realized through the conducting part 81, and the covering protection effect of the partial structure of the conducting part 81 corresponding to the buffer unit 41 is realized through the protective part 91, so as to improve the signal transmission reliability among the first part 711, the second part 712 and the conducting part 81.

[0375] In some embodiments, the orthographic projection of the third opening 44 on the substrate 10 is located on one side of the orthographic projection of the second portion 712 on the substrate 10. In conjunction with the drawings, the orthographic projection of the third opening 44 on the substrate 10 may be located along the second direction Y on one side of the orthographic projection of the second portion 712 on the substrate 10.

[0376] Taking the area including the pad structure PAD in the second area A2 as the lower frame of the display module 100 as an example, the embodiment of the present application is provided with at least part of the structure in the third opening 44 at the lower frame area, and the orthographic projection of the part of the structure on the substrate 10 is arranged on the side of the orthographic projection of the second part 712 on the substrate 10, so that the orthographic projection of the second part 712 and the pad structure PAD on the substrate 10 are both located outside the orthographic projection of the third opening 44 on the substrate 10, thereby reducing the possibility of the second part 712 and the pad structure PAD being exposed relative to the third opening 44, and reducing the risk of corrosion of the second part 712 and the pad structure PAD. In addition, the part of the structure located at the lower frame in the third opening 44 can reduce the risk of overflow of the first organic layer 30 at the lower frame area, change the white spot problem of the lower frame appearance, and improve the yield and display reliability of the display module 100.

[0377] Further optionally, the first conductive portion 71 can be used to transmit touch signals. On this basis, this layout design of the third opening 44 can reduce the risk of overflow of the first organic layer 30 in the lower frame area while improving the reliability of touch signal transmission and improving the touch accuracy of the display module 100.

[0378] In some optional embodiments, the third opening 44 is extended in a direction away from the second portion 712. In conjunction with the accompanying drawings, the third opening 44 extends from one side of the second portion 712 in the second direction Y to a direction away from the second portion 712, so that the orthographic projection of the third opening 44 on the substrate 10 can be staggered with the orthographic projection of the second portion 712 and the pad structure PAD on the substrate 10, thereby reducing the possibility of exposure of the second portion 712 and the pad structure PAD relative to the third opening 44 and reducing the risk of corrosion of the second portion 712 and the pad structure PAD.

[0379] In some embodiments, two third openings 44 are provided, and the two third openings 44 are respectively located on two opposite sides of the second portion 712 .

[0380] In the embodiment of the present application, considering that there is a certain amount of space corresponding to both sides of the second part 712 in the second direction Y, the third opening 44 is set to two, and the two third openings 44 are arranged on both sides of the second part 712 along the second direction Y. In this way, while meeting the need for the third opening 44 to be staggered relative to the second part 712, the positive projection area of ​​the third opening 44 on the substrate 10 is increased.

[0381] It should be noted that the third openings 44 on both sides of the second portion 712 may be independently provided, or may be interconnected through other third openings 44. Optionally, the orthographic projection of the third opening 44 on the substrate 10 is in a rectangular or racetrack shape.

[0382] Specifically, when the third openings 44 on both sides of the second portion 712 are independently arranged, the two third openings 44 may be independent rectangular structures. In another case, some of the third openings 44 may also be located on both sides of the first area A1 along the second direction Y, and connected to the two third openings 44 on both sides of the second portion 712. In this design, the orthographic projection of the third opening 44 on the substrate 10 is a racetrack structure, and the two third openings 44 on both sides of the second portion 712 are connected to each other through other third openings 44.

[0383] In some embodiments, Figures 3 to 5 As shown, the first functional layer 40 is arranged in contact with the first conductive layer 70 , that is, the surface of the first functional layer 40 facing the substrate 10 can be in contact with the surface of the first conductive layer 70 facing away from the substrate 10 .

[0384] In the embodiment of the present application, considering that the first functional layer 40 is close to the first conductive layer 70, the orthographic projection of the first conductive portion 71 on the substrate 10 is arranged outside the orthographic projection of the buffer unit 41 on the substrate 10, and the orthographic projection of the third opening 44 on the substrate 10 is located on one side of the orthographic projection of the second portion 712 on the substrate 10, so that the first conductive portion 71 is not exposed relative to the buffer unit 41 and the third opening 44, thereby improving the reliability of signal transmission inside the first conductive portion 71.

[0385] In some embodiments, the display module 100 further includes an encapsulation layer 50 disposed between the first organic layer 30 and the light-emitting functional layer 20 .

[0386] The embodiment of the present application does not limit the positional relationship between the encapsulation layer 50 and the first functional layer 40 . The first encapsulation layer 50 may be located on the side of the first functional layer 40 facing away from the substrate 10 , or the first encapsulation layer 50 may be located on the side of the first functional layer 40 facing the substrate 10 .

[0387] The encapsulation layer 50 is a functional film layer that has an encapsulation effect, and it can have an encapsulation and protection effect on the light-emitting functional layer 20, while the first organic layer 30 is a functional film layer that has a different effect from the encapsulation layer 50. On this basis, considering that a blocking structure is usually provided in the display module 100 to block the overflow of the organic material in the encapsulation layer 50, but since the first organic layer 30 is located on the side of the encapsulation layer 50 away from the substrate 10, the blocking structure used to block the overflow of the encapsulation layer 50 often cannot effectively suppress the overflow phenomenon of the first organic layer 30.

[0388] In view of this, the embodiment of the present application further adds a buffer unit 41 in the display module 100, so as to achieve a blocking and limiting effect on the first organic layer 30 through the buffer unit 41, thereby reducing the adverse effects of overflow of the first organic layer 30 on the display effect and yield rate, and improving the reliability of the display module 100.

[0389] The embodiment of the present application does not limit the specific structure and composition of the encapsulation layer 50. Optionally, the encapsulation layer 50 includes a first inorganic encapsulation layer 51, an organic encapsulation layer 52, and a second inorganic encapsulation layer 53 which are sequentially stacked in a direction away from the substrate 10. Among them, the organic encapsulation layer 52 is a film layer structure including organic materials in the encapsulation layer 50, and the first inorganic encapsulation layer 51 and the second inorganic encapsulation layer 53 both include inorganic materials and can play a limiting effect on the organic encapsulation layer 52 to a certain extent.

[0390] In some embodiments, an orthographic projection of the first organic layer 30 on the substrate 10 covers and exceeds an orthographic projection of the organic encapsulation layer 52 on the substrate 10 .

[0391] In the embodiment of the present application, since the orthographic projection of the first organic layer 30 on the substrate 10 covers and exceeds the orthographic projection of the organic encapsulation layer 52 on the substrate 10, the edge of the first organic layer 30 will be located on the side of the edge of the organic encapsulation layer 52 away from the first area A1. Considering that the blocking structure used to block the overflow of the organic encapsulation layer 52 is usually located near the edge of the organic encapsulation layer 52, the blocking structure can only play a blocking and limiting effect on the first organic layer 30 to a certain extent, and the blocking structure alone cannot meet the need for blocking overflow of the first organic layer 30. However, due to the existence of the buffer unit 41, it can cooperate with the blocking structure to improve the blocking and limiting effect on the first organic layer 30, thereby reducing the adverse effects of the overflow of the first organic layer 30 on the display effect and the yield rate, and improving the reliability of the display module 100.

[0392] In some embodiments, at least part of the buffer unit 41 has an orthographic projection on the substrate 10 outside the orthographic projection of the organic encapsulation layer 52 on the substrate 10. The number of the buffer unit 41 may be one or more. When the number of the buffer unit 41 is multiple, the orthographic projections of the multiple buffer units 41 on the substrate 10 may all be outside the orthographic projection of the organic encapsulation layer 52 on the substrate 10, or the orthographic projections of part of the buffer unit 41 on the substrate 10 are outside the orthographic projection of the organic encapsulation layer 52 on the substrate 10, and the orthographic projections of the remaining part of the buffer unit 41 on the substrate 10 overlap with the orthographic projections of the organic encapsulation layer 52 on the substrate 10.

[0393] In the embodiment of the present application, the position of the buffer unit 41 is restricted, and at least part of the buffer unit 41 is located outside the orthographic projection of the organic encapsulation layer 52 on the substrate 10, that is, at least part of the buffer unit 41 can correspond to the edge position of the organic encapsulation layer 52, thereby helping to improve the blocking and limiting effect of the buffer unit 41 on the first organic layer 30 at the edge position, thereby improving the product yield and display reliability of the display module 100.

[0394] In some embodiments, the first functional layer 40 is located between the encapsulation layer 50 and the first organic layer 30 .

[0395] In the embodiment of the present application, the first functional layer 40 is arranged closer to the first organic layer 30 relative to the encapsulation layer 50, so as to help reduce the distance between the first functional layer 40 and the first organic layer 30 in the thickness direction Z. This design helps to enhance the blocking and limiting effect of the first functional layer 40 on the first organic layer 30, thereby further improving the product yield and display reliability of the display module 100.

[0396] In some embodiments, the display module 100 further includes a touch layer TP, and the touch layer TP is located between the first functional layer 40 and the light-emitting functional layer 20. Further optionally, the touch layer TP is located between the first functional layer 40 and the encapsulation layer 50.

[0397] The touch layer TP is a film structure used to realize the touch function in the display module 100. Similar to the first organic layer 30, the touch layer TP also has a part of its structure located in the first area A1 and a part of its structure located in the second area A2. The touch layer TP is located on the side of the first functional layer 40 facing the substrate 10, that is, the first functional layer 40 can separate the touch layer TP from the first organic layer 30 in the thickness direction Z, thereby reducing the possibility of direct contact between the touch layer TP and the first organic layer 30 in the second area A2, reducing the adverse effect of the first organic layer 30 on the touch signal in the touch layer TP, and improving the touch accuracy of the display module 100.

[0398] In some embodiments, Figures 7 to 9 As shown, the display module 100 includes a light adjustment part 60 located in the first area A1 and in contact with the first organic layer 30 .

[0399] The light adjustment part 60 is a structure for adjusting light. The light adjustment part 60 and the light emitting functional layer 20 are both located in the first area A1. The light adjustment part 60 can adjust the light emitted by the light emitting functional layer 20, thereby improving the display effect of the display module 100. Considering that the light adjustment part 60 can have a variety of forms, in different forms, the orthographic projection of the light adjustment part 60 on the substrate 10 can be overlapped with the orthographic projection of the light emitting unit 21 on the substrate 10, or the orthographic projection of the light adjustment part 60 on the substrate 10 can also be located outside the orthographic projection of the light emitting unit 21 on the substrate 10, and the embodiment of the present application does not limit this.

[0400] In the embodiment of the present application, the light adjustment unit 60 is provided in the display module 100, so that the display effect of the display module 100 can be improved and the viewing experience can be improved. On this basis, by setting the first organic layer 30 to be in contact with the light adjustment unit 60, the first organic layer 30 can cooperate with the light adjustment unit 60 or assist the light adjustment unit 60 to achieve the effect of adjusting the light and enhance the display effect.

[0401] In some embodiments, the light-adjusting part 60 and the first organic layer 30 have different refractive indices.

[0402] In this design, the light propagating to the contact surface between the light adjustment part 60 and the first organic layer 30 can be refracted, thereby changing the propagation path of the light, thereby improving the effect. For example, the light with a larger tilt angle emitted by the light emitting unit 21 can be refracted at the contact surface between the light adjustment part 60 and the first organic layer 30, and converted into light with a smaller tilt angle, thereby improving the light extraction efficiency of the display module 100 and reducing the overall power consumption.

[0403] The embodiment of the present application does not limit the positional relationship between the light adjustment part 60 and the first organic layer 30. For example, the light adjustment part 60 and the first organic layer 30 can be stacked in the thickness direction Z, or one of them is provided with a hole structure, and the other is at least partially located in the hole structure. On this basis, the contact surface between the light adjustment part 60 and the first organic layer 30 can be located on one side of the light adjustment part 60 in the thickness direction Z, or can also be located at the side wall position of the hole structure.

[0404] Second, see Fig.13 , an embodiment of the present application provides a display device 200, and the display device 200 includes the display module 100 in any of the aforementioned embodiments.

[0405] It should be noted that the display device 200 provided in the embodiment of the present application has the beneficial effects of the display module 100 in any of the aforementioned embodiments. Please refer to the aforementioned description of the beneficial effects of the display module 100 for details, and the embodiment of the present application will not be repeated.

[0406] Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted for facilitating the understanding of this application and are not intended to limit the present invention. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of protection of this application shall still be subject to the scope defined in the attached claims.

[0407] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A display module, characterized in that: The display module has a first area and a second area surrounding at least one side of the first area, and the display module includes: substrate; A light-emitting functional layer is disposed on one side of the substrate; A first organic layer is disposed on a side of the light-emitting functional layer away from the substrate and extends from the first area to the second area; The first functional layer is at least partially located in the second region, and the first functional layer is located on a side of the first organic layer facing the substrate, and the first functional layer includes a buffer unit located in the second region.

2. The display module according to claim 1, characterized in that: It also includes an encapsulation layer disposed between the first organic layer and the light-emitting functional layer; Preferably, the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer which are sequentially stacked in a direction away from the substrate; The orthographic projection of the first organic layer on the substrate covers and exceeds the orthographic projection of the organic encapsulation layer on the substrate; Preferably, at least a portion of the buffer unit is located outside the orthographic projection of the organic encapsulation layer on the substrate; Preferably, the first functional layer is located between the encapsulation layer and the first organic layer; Preferably, the display module further comprises a touch layer, and the touch layer is located between the first functional layer and the light-emitting functional layer. Preferably, the touch layer is located between the first functional layer and the encapsulation layer.

3. The display module according to claim 2, characterized in that: The second area is arranged around the first area; Preferably, the display module further comprises a dam structure located in the second area, the dam structure is arranged around the first area, and at least part of the buffer unit is located on a side of the dam structure away from the first area; Preferably, the organic encapsulation layer in the encapsulation layer terminates at the dam structure; Preferably, the dam structure includes a first dam and a second dam located on a side of the first dam away from the first area, and at least part of the buffer unit is located on a side of the second dam away from the first area; Preferably, part of the buffer unit is located between the first dam and the second dam; and / or part of the buffer unit is located on a side of the first dam close to the first area.

4. The display module according to claim 1, characterized in that: The display module includes a light adjustment portion located in the first area and in contact with the first organic layer; Preferably, the light adjustment part and the first organic layer have different refractive indices.

5. The display module according to claim 4, characterized in that: The light-emitting functional layer comprises a plurality of light-emitting units, the light-adjusting parts are multiple and arranged at intervals, the light-adjusting parts are arranged corresponding to the light-emitting units, and the orthographic projections of the light-emitting units on the substrate at least partially overlap with the orthographic projections of the corresponding light-adjusting parts on the substrate; The light adjustment portion includes a curved surface facing away from the substrate, the curved surface is protruding in a direction away from the substrate, and the first organic layer is located on the side of the light adjustment portion facing away from the substrate; Preferably, the refractive index of the light adjustment part is greater than the refractive index of the first organic layer.

6. The display module according to claim 4, characterized in that: The light-emitting functional layer includes a plurality of light-emitting units, the light-adjusting portion is provided with a plurality of adjustment openings, the light-emitting units are provided corresponding to the adjustment openings, and the orthographic projections of the light-emitting units on the substrate at least partially overlap with the orthographic projections of the corresponding adjustment openings on the substrate; The first organic layer fills the adjustment opening, and a portion of the first organic layer is located on a side of the light adjustment portion away from the substrate, and a refractive index of the light adjustment portion is smaller than a refractive index of the first organic layer; Preferably, along the direction in which the light adjustment portion moves away from the substrate, the inner diameter of the adjustment opening gradually increases; Preferably, the first functional layer includes the light adjustment portion; or, the light adjustment portion is located on a side of the first functional layer away from the substrate; Preferably, an outer contour of an orthographic projection of the first functional layer on the substrate is located outside an outer contour of an orthographic projection of the first organic layer on the substrate; Preferably, the refractive index of the light adjustment portion is n1, 1.4≤n1≤1.6; the refractive index of the first organic layer is n2, 1.6≤n2≤1.

8.

7. The display module according to claim 4, characterized in that: The light-emitting functional layer comprises a plurality of light-emitting units, the light-adjusting parts are multiple and arranged at intervals, the light-adjusting parts are arranged corresponding to the light-emitting units, and the orthographic projections of the light-emitting units on the substrate at least partially overlap with the orthographic projections of the corresponding light-adjusting parts on the substrate; The first organic layer covers the light adjustment part, and the refractive index of the light adjustment part is greater than the refractive index of the first organic layer; Preferably, the light adjustment portion includes a first surface and a second surface opposite to each other in the thickness direction of the substrate, and a first side surface connecting the first surface and the second surface, the first surface is located on a side of the second surface away from the substrate, and an angle between the second surface and the first side surface is an acute angle, and the first organic layer is located on a side of the light adjustment portion away from the substrate and covers the first side surface; Preferably, the first functional layer includes the light adjustment portion; or, the light adjustment portion is located on a side of the first functional layer away from the substrate; Preferably, the outer contour of the orthographic projection of the first functional layer on the substrate is located outside the outer contour of the orthographic projection of the first organic layer on the substrate; Preferably, the refractive index of the light adjustment portion is n1, 1.6≤n1≤1.8; the refractive index of the first organic layer is n2, 1.4≤n2≤1.

6.

8. The display module according to claim 1, characterized in that: It also includes a first conductive layer disposed between the first functional layer and the light-emitting functional layer, wherein the orthographic projection of the first conductive layer on the substrate is located outside the orthographic projection of the buffer unit on the substrate; Preferably, the first conductive layer includes a first conductive part, the display module further includes a conductive part and a protective part, the film layer where the conductive part is located is located between the first conductive layer and the light-emitting functional layer, and the film layer where the protective part is located is located between the conductive part and the first functional layer; the conductive part is electrically connected to the first conductive part, and the orthographic projections of the conductive part and the protective part on the substrate overlap with the orthographic projection of the buffer unit on the substrate; Preferably, the first conductive portion includes a first portion and a second portion respectively disposed on both sides of the buffer unit, and the first portion extends from the first area to the second area; Wherein, the display module further includes a pad structure located in the second area, and the second part is connected to the pad structure.

9. The display module according to claim 8, characterized in that: The display module includes a touch layer, the touch layer includes the first conductive layer and a second conductive layer located between the first conductive layer and the light-emitting functional layer, the conductive portion is located in the second conductive layer; the first functional layer is located on a side of the first conductive layer away from the second conductive layer; Preferably, the first functional layer is arranged in contact with the first conductive layer; Preferably, the display module further comprises an insulating layer located between the first conductive layer and the second conductive layer, and the protection portion is located in the insulating layer; Preferably, the insulating layer includes an insulating portion located on a side of the protecting portion close to the first region, a via structure is formed between the protecting portion and the insulating portion, and the first part of the first conductive portion is connected to the conductive portion at the via structure.

10. The display module according to claim 9, characterized in that: The display module further includes a dam structure located in the second area, the second area is arranged around the first area, and the dam structure is arranged around the first area; at least part of the via structure is located on a side of the dam structure away from the first area; Alternatively, the display module further comprises a dam structure located in the second area, the second area is arranged around the first area, and the dam structure is arranged around the first area; the dam structure comprises a first dam, and a second dam located on a side of the first dam away from the first area; Wherein, at least part of the via structure is located on a side of the first dam facing the first region; and / or at least part of the via structure is located between the first dam and the second dam.

11. The display module according to claim 1, characterized in that: The second region includes a first sub-region located at least on one side of the first region, the buffer unit includes a plurality of first openings located in the first sub-region, the plurality of first openings are arranged in an array, and a projection of the first functional layer located in the first sub-region on the substrate is in a grid shape; Preferably, the shape of the orthographic projection of the first opening on the substrate includes at least one of a circle, a triangle, a rhombus, a rectangle, and a polygon; Preferably, the buffer unit further comprises a second opening, and an area of ​​an orthographic projection of the second opening on the substrate is larger than an area of ​​an orthographic projection of the first opening on the substrate; Preferably, the second opening is located on a side of the first opening away from the first area; Preferably, the first opening has a first wall surface facing the first area, and the first wall surface includes a first sub-surface and a second sub-surface that are connected and intersecting; Preferably, the second opening has a second wall surface facing the first area, the second wall surface includes a plurality of third sub-surfaces and a plurality of fourth sub-surfaces alternately connected, and the third sub-surfaces intersect with the fourth sub-surfaces; Alternatively, the orthographic projection of the second wall surface on the substrate is in a wavy shape; Preferably, in a direction gradually approaching the first region, the depth of the first opening gradually increases, and / or the orthographic projection area of ​​the first opening on the substrate gradually increases; Preferably, the first opening penetrates the first functional layer, and / or the second opening penetrates the first functional layer.

12. The display module according to claim 11, characterized in that: The second area is arranged around the first area; the first sub-area is arranged around the first area; Preferably, a plurality of said first openings are arranged around said first area; Preferably, the second opening is an annular groove surrounding the first zone; Preferably, the display module further comprises a dam structure located in the second area, the dam structure is arranged around the first area, and the dam structure is located between the first sub-area and the first area; Preferably, a maximum distance between a side of the second opening away from the first region and the dam structure is less than or equal to 150 μm; Preferably, a minimum distance between a side of the first opening close to the first region and the dam is less than or equal to 60 μm; Preferably, the orthographic projection of the first opening on the substrate is a rhombus, and the distance between two relatively parallel sides of the rhombus is L1, 6 μm≤L1≤10 μm; Preferably, a width of the second opening is L2, 5 μm≤L2≤25 μm.

13. The display module according to claim 11, characterized in that: The first functional layer further includes a third opening located in the second region, the size of the orthographic projection of the third opening on the substrate is larger than the size of the orthographic projection of the first opening on the substrate, and the third opening is located on a side of the buffer unit away from the first region; Preferably, the display module further comprises a first conductive layer disposed between the first functional layer and the light-emitting functional layer, a conductive portion located between the first conductive layer and the light-emitting functional layer, and an insulating layer located between the conductive portion and the first functional layer; wherein the first conductive layer comprises a first conductive portion, the conductive portion is electrically connected to the first conductive portion, and the orthographic projections of the conductive portion and the insulating layer on the substrate overlap with the orthographic projection of the buffer unit on the substrate; Preferably, the first conductive portion includes a first portion and a second portion respectively disposed on both sides of the buffer unit, wherein the first portion extends from the first area to the second area, and the first portion is connected to the second portion through the conductive portion; Preferably, the display module further comprises a pad structure located in the second area, the pad structure is located at a side of the buffer unit away from the first area, and the second part is connected to the pad structure; Preferably, the orthographic projection of the third opening on the substrate is located on one side of the orthographic projection of the second part on the substrate; Preferably, the third opening is arranged to extend in a direction away from the second portion; Preferably, two third openings are provided, and the two third openings are respectively located on two opposite sides of the second part; Preferably, an area of ​​an orthographic projection of the third opening on the substrate is larger than an area of ​​an orthographic projection of the first opening on the substrate; Preferably, the shape of the orthographic projection of the third opening on the substrate is a rectangle, a racetrack, etc.; Preferably, the third opening penetrates the first functional layer.

14. A display module, characterized in that: The display module has a first area and a second area surrounding the first area, and the display module includes: substrate; A light-emitting functional layer is disposed on one side of the substrate; A first organic layer is disposed on a side of the light-emitting functional layer away from the substrate and extends from the first area to the second area; The first functional layer is arranged between the first organic layer and the light-emitting functional layer, and the first functional layer includes a buffer unit and a third opening located in the second area. The buffer unit is arranged around the first area, and the third opening is located on a side of the buffer unit away from the first area.

15. The display module according to claim 14, characterized in that: The buffer unit comprises a plurality of first openings, and the plurality of first openings are arranged in an array; Preferably, a plurality of said first openings are arranged around said first area; Preferably, the shape of the orthographic projection of the first opening on the substrate includes at least one of a circle, a triangle, a rhombus, a rectangle, and a polygon; Preferably, the buffer unit further comprises a second opening, and an area of ​​an orthographic projection of the second opening on the substrate is larger than an area of ​​an orthographic projection of the first opening on the substrate; Preferably, the second opening is located on a side of the first opening away from the first area; Preferably, the second opening is an annular groove surrounding the first zone; Preferably, the first opening has a first wall surface facing the first area, and the first wall surface includes a first sub-surface and a second sub-surface that are connected and intersecting; Preferably, the second opening has a second wall surface facing the first area, the second wall surface includes a plurality of third sub-surfaces and a plurality of fourth sub-surfaces alternately connected, and the third sub-surfaces intersect with the fourth sub-surfaces; Alternatively, the orthographic projection of the second wall surface on the substrate is in a wavy shape; Preferably, the first opening penetrates the first functional layer, and / or the second opening penetrates the first functional layer, and / or the third opening penetrates the first functional layer.

16. The display module according to claim 14, characterized in that: The display module further comprises a dam structure located in the second area, the dam structure is arranged around the first area, and the dam structure is located between the buffer unit and the first area; Preferably, the maximum distance between the buffer unit and the dam structure is less than or equal to 150 μm; Preferably, a minimum distance between a side of the first opening close to the first region and the dam is less than or equal to 60 μm; Preferably, the orthographic projection of the first opening on the substrate is a rhombus, and the distance between two relatively parallel sides of the rhombus is L1, 6 μm≤L1≤10 μm; Preferably, a width of the second opening is L2, 5 μm≤L2≤25 μm.

17. The display module according to claim 14, characterized in that: It also includes a touch layer disposed between the first functional layer and the light-emitting functional layer, wherein the touch layer includes a first conductive layer, a second conductive layer, and an insulating layer located between the first conductive layer and the second conductive layer; The first conductive layer includes a first conductive portion, the second conductive layer includes a conductive portion, the conductive portion is electrically connected to the first conductive portion, and an orthographic projection of the conductive portion on the substrate overlaps with an orthographic projection of the buffer unit on the substrate; Preferably, the first conductive portion includes a first portion and a second portion respectively disposed on both sides of the buffer unit, wherein the first portion extends from the first area to the second area; and the first portion is connected to the second portion through the conductive portion; Preferably, the display module further comprises a pad structure located in the second area, the pad structure is located at a side of the buffer unit away from the first area, and the second part is connected to the pad structure; Preferably, the orthographic projection of the third opening on the substrate is located on one side of the orthographic projection of the second part on the substrate; Preferably, the third opening is arranged to extend in a direction away from the second portion; Preferably, two third openings are provided, and the two third openings are respectively located on two opposite sides of the second part; Preferably, the first functional layer is arranged in contact with the first conductive layer.

18. The display module according to claim 14, characterized in that: It also includes an encapsulation layer disposed between the first organic layer and the light-emitting functional layer; Preferably, the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer which are sequentially stacked in a direction away from the substrate; The orthographic projection of the first organic layer on the substrate covers and exceeds the orthographic projection of the organic encapsulation layer on the substrate; Preferably, at least a portion of the buffer unit is located outside the orthographic projection of the organic encapsulation layer on the substrate; Preferably, the first functional layer is located between the encapsulation layer and the first organic layer.

19. The display module according to claim 14, characterized in that: The display module includes a light adjustment portion located in the first area and in contact with the first organic layer; Preferably, the light adjustment part and the first organic layer have different refractive indices.

20. A display device, characterized in that: Comprising a display module as described in any one of claims 1 to 19.

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