Display module, preparation method thereof and electronic device

Abstract

The application discloses a display module, a preparation method thereof and an electronic device. The display module is provided with a deformation layer on the side of a planarization layer away from a substrate. The deformation layer is used to expand when a light-emitting material layer is formed, so that the interval between adjacent first electrodes can be increased when the light-emitting material layer is formed, thereby meeting the precision requirements of a mask plate and evaporation equipment, and the light-emitting material layer can be accurately evaporated on the first electrodes. After the evaporation of the light-emitting material layer is completed, the deformation layer can be contracted to reduce the interval between adjacent first electrodes, reduce the interval between adjacent display pixels, and achieve the purpose of improving the aperture ratio of the display module.

Description

Technical Field

[0001] This specification relates to the field of display technology, and more specifically, to a display module and its manufacturing method, and electronic equipment. Background Technology

[0002] With the continuous development of display technology, active light emission display technologies such as OLED (Organic Light-Emitting Diode) and QLED (Quantum Dot Light Emitting Diodes), which have the characteristics of flexible fabrication, high contrast and high brightness, have become the mainstream direction of market research.

[0003] In display modules such as OLEDs that require the deposition of light-emitting material layers, the aperture ratio of the display module cannot be further improved due to limitations in deposition equipment and mask opening precision. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a display module and its manufacturing method, as well as an electronic device, to achieve the goal of increasing the aperture ratio of the display module.

[0005] To achieve the above technical objectives, the embodiments of this application provide the following technical solutions:

[0006] Firstly, this specification provides a display module, comprising:

[0007] Substrate;

[0008] A planarization layer is located on one side of the substrate;

[0009] A deformation layer is located on the side of the planarization layer opposite to the substrate. The deformation layer is used to expand during the formation of the light-emitting material layer and to contract after the light-emitting material layer is formed.

[0010] Multiple pixel openings that expose at least a portion of the surface of the deformable layer;

[0011] The first electrode is located on the side of the deformable layer away from the substrate, and the first electrode is located in the pixel opening. The side of the first electrode away from the substrate is used to deposit the light-emitting material layer.

[0012] In some embodiments, the deformation layer includes a plurality of spaced deformation portions, and the planarization layer includes a plurality of trenches, wherein the deformation portions are disposed in the trenches;

[0013] Optionally, the distance between the top surface of the deformation layer and the substrate is equal to the distance between the top surface of the planarization layer and the substrate;

[0014] The top surface of the deformation layer includes the surface with the greatest distance between the deformation layer and the substrate; the top surface of the planarization layer includes the surface with the greatest distance between the planarization layer and the substrate.

[0015] In some embodiments, the display module further includes: multiple protective layers;

[0016] The protective layer is located between the deformation layer and the first electrode;

[0017] Optionally, the protective layer is disposed around the sidewall and bottom surface of the first electrode;

[0018] The bottom surface of the first electrode includes the surface of the first electrode facing the substrate;

[0019] The distance between the top surface of the protective layer and the substrate is equal to the distance between the top surface of the planarization layer and the substrate;

[0020] The top surface of the protective layer includes the surface with the greatest distance between the deformation layer and the substrate; the top surface of the planarization layer includes the surface with the greatest distance between the planarization layer and the substrate.

[0021] In some embodiments, the tensile strength of the protective layer is greater than the tensile strength of the first electrode;

[0022] or

[0023] The hardness of the protective layer is greater than that of the first electrode.

[0024] In some embodiments, the deformable layer includes a plurality of spaced deformable portions, the surface of which facing away from the substrate is used to form the first electrode.

[0025] In some embodiments, the display module includes a functional device area;

[0026] Within the functional device area, the pixel definition layer includes a plurality of pixel definition units isolated from each other, and the pixel opening is located between adjacent pixel definition units;

[0027] Optionally, the pixel definition layer is a light-absorbing material layer.

[0028] In some embodiments, the deformation layer is a photoinflatable layer;

[0029] The display module further includes: a light-shielding layer;

[0030] The light-shielding layer is located on the side of the substrate opposite to the planarization layer.

[0031] Secondly, the embodiments of this specification provide a method for preparing a display module, including:

[0032] A substrate, a planarization layer, and a deformation layer are formed, wherein the planarization layer is located on one side of the substrate, and the deformation layer is located on the side of the planarization layer opposite to the substrate;

[0033] Multiple pixel openings are formed, the pixel openings exposing at least a portion of the surface of the deformable layer;

[0034] A first electrode is formed, which is located in the pixel opening and on the side of the deformation layer away from the substrate;

[0035] The deformation layer is irradiated to cause it to expand, increasing the spacing between adjacent first electrodes, and a light-emitting material layer is formed on the side of the first electrode facing away from the substrate.

[0036] In some embodiments, the formation of the substrate, planarization layer, and deformation layer includes:

[0037] Provide transparent substrates;

[0038] On the transparent substrate, a substrate, a planarization layer located on one side of the substrate, and a deformation layer located on the side of the planarization layer opposite to the substrate are formed;

[0039] Optionally, irradiating the deformed layer includes:

[0040] A light source is provided, which illuminates the deformation layer from the side of the transparent substrate opposite to the substrate.

[0041] Optionally, after forming the light-emitting material layer on the side of the first electrode opposite to the substrate, the method further includes:

[0042] A light-shielding layer is formed on the side of the substrate opposite to the planarization layer;

[0043] Optionally, the illumination area of ​​the light source is larger than the area used to form the luminescent material layer.

[0044] Thirdly, embodiments of this specification provide an electronic device including a display module as described in any of the preceding claims.

[0045] As can be seen from the above technical solutions, the embodiments of this application provide a display module and its preparation method, as well as an electronic device. In the display module, a deformation layer is provided on the side of the planarization layer away from the substrate. The deformation layer is used to expand when the light-emitting material layer is formed, so that the distance between adjacent first electrodes can be increased when the light-emitting material layer is formed, thereby meeting the accuracy requirements of the mask and the evaporation equipment, so that the light-emitting material layer can be accurately deposited on the first electrode. After the light-emitting material layer is deposited, the deformation layer can shrink to reduce the distance between adjacent first electrodes and reduce the distance between adjacent display pixels, thereby achieving the purpose of improving the aperture ratio of the display module. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0047] Figure 1 A top view of a display module is provided as one embodiment of this specification.

[0048] Figure 2 Provided for one embodiment of this specification Figure 1 Schematic diagram of the cross-sectional structure of line AA' in the middle;

[0049] Figure 3 A schematic cross-sectional view of the display module before and after the fabrication of the luminescent material layer, provided as one embodiment of this specification;

[0050] Figure 4 A schematic cross-sectional view of the display module before and after the fabrication of the luminescent material layer, provided for another embodiment of this specification;

[0051] Figure 5 A cross-sectional structural diagram of a display module provided for one embodiment of this specification;

[0052] Figure 6 A top view of a display module is provided as another embodiment of this specification.

[0053] Figure 7 A cross-sectional structural diagram of a display module provided for another embodiment of this specification;

[0054] Figure 8 A cross-sectional structural diagram of a display module provided for yet another embodiment of this specification;

[0055] Figure 9 A schematic flowchart illustrating a method for manufacturing a display module according to one embodiment of this specification;

[0056] Figure 10 A schematic diagram of the vapor deposition of a luminescent material layer provided for one embodiment of this specification;

[0057] Figure 11 This is a schematic diagram of an electronic device provided for one embodiment of this specification. Detailed Implementation

[0058] Unless otherwise defined, the technical or scientific terms used in the embodiments of this specification shall have the ordinary meaning understood by one of ordinary skill in the art to which this specification pertains. The terms "first," "second," and similar terms used in the embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to avoid confusion of constituent elements.

[0059] Unless the context otherwise requires, throughout this specification, "a plurality of" means "at least two," and "including" is interpreted as open-ended or encompassing, that is, "including, but not limited to." In the description of this specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this specification. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example.

[0060] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this specification.

[0061] Overview

[0062] As the number of pixels in a display increases, maintaining the overall size of the display module requires increasingly smaller spacing between adjacent pixels. However, in the fabrication of OLED and other types of display modules, the spacing between adjacent pixels is limited by various constraints, such as the aperture precision of the evaporation equipment or mask. Particularly during the evaporation of the luminescent material, assuming the evaporation precision of the equipment or the aperture precision of the mask is 10μm, the spacing between adjacent pixels (which can refer to the spacing between pixel openings in the pixel definition layer) in the current pixel structure cannot be less than 10μm. If the spacing between adjacent pixels is less than 10μm, it may lead to misalignment of luminescent material layers of different colors. This is the main reason why the aperture ratio of current display modules cannot be further improved.

[0063] To address this issue and improve the pixel aperture ratio of the display module, the inventors discovered through long-term research that a deformation layer can be placed below the anode of the display pixel. This deformation layer expands during the evaporation of the luminescent material, increasing the spacing between the anodes located above the deformation layer. This ensures that the spacing between the anodes meets the precision requirements of the evaporation equipment or mask. After the luminescent material layer is deposited, the deformation layer can shrink to reduce the spacing between adjacent display pixels. This achieves the goal of improving the aperture ratio of the display module while meeting the precision requirements of the evaporation equipment and mask, especially the FMM (Fine Metal Mask) high-precision metal mask.

[0064] Based on the above inventive concept, the display module provided in the embodiments of this specification will be described exemplarily below with reference to the accompanying drawings.

[0065] Exemplary module

[0066] This specification provides an embodiment of a display module, such as... Figure 1 and Figure 2 As shown, Figure 1 To show the top view of the module, Figure 2 for Figure 1 A cross-sectional view along line AA' shows that the module includes:

[0067] Substrate 10;

[0068] A planarization layer 20 is located on one side of the substrate 10;

[0069] The deformation layer 30 is located on the side of the planarization layer 20 away from the substrate 10. The deformation layer 30 is used to expand when the light-emitting material layer is formed and to shrink after the light-emitting material layer is formed.

[0070] Multiple pixel openings 52 expose at least a portion of the surface of the deformable layer 30;

[0071] The first electrode 42 is located on the side of the deformation layer 30 away from the substrate 10, and the first electrode 42 is located in the pixel opening 52. The side of the first electrode 42 away from the substrate 10 is used to set the light-emitting material layer.

[0072] To illustrate the relationship between the deformation layer 30 and the planarization layer 20 Figure 1 The top view shown does not show any films other than the planarization layer 20 and the deformation layer 30. In some embodiments, the deformation layer 30 may be a single, continuous film, which may include patterned gaps to accommodate the space requirements of the deformation layer 30 during expansion. In other embodiments, the deformation layer 30 may include a plurality of spaced-apart deformation portions, the surface of which faces away from the substrate 10 for hosting the first electrode 42. The correspondence between the deformation portions and the first electrodes 42 may be one-to-one, or one deformation portion may correspond to multiple first electrodes 42. That is, in some embodiments, one deformation portion may host one first electrode 42, while in other embodiments, one deformation portion may host two or more first electrodes 42.

[0073] The deformation layer 30 can refer to a film layer that can deform when certain environmental parameters (such as light, temperature, etc.) change. A display module with a deformation layer 30 can make the spacing between the pixel openings 52 of the pixel definition layer 50 smaller than the precision requirements of the evaporation equipment or mask, so as to increase the number of display pixels without increasing the module size, and thus the display module can have a higher PPI (Pixels Per Inch).

[0074] During the fabrication of the luminescent material layer, the deformation layer 30 can be expanded and deformed by adjusting environmental parameters (such as light intensity and temperature) to increase the spacing between adjacent first anodes, thereby ensuring that the spacing between adjacent pixels meets the precision requirements of the evaporation equipment or mask. After the luminescent material layer is fabricated, the adjustment of environmental parameters can be reversed, causing the deformation layer 30 to shrink from its expanded state to its normal environmental parameter state, thus reducing the spacing between the first anodes. This reduces the spacing between adjacent display pixels in normal use, decreases the area of ​​non-displayable regions, and increases the aperture ratio of display pixels.

[0075] refer to Figure 3 , Figure 3 This diagram shows cross-sectional structural schematics of a display module before, during, and after the formation of the luminescent material layer. Figure 3It can be observed that before and after the fabrication of the luminescent material layer, the deformation layer 30 in the display module can be in a normal operating state (in some cases, the normal operating state can refer to a state under normal temperature, normal pressure, and normal illumination). At this time, the spacing between the first electrodes 42 in the deformation layer 30 is L1. However, during the fabrication of the luminescent material layer, due to the influence of factors such as high-intensity illumination or high-temperature heat sources, the deformation layer 30 expands. The position of the first electrodes 42 on the deformation layer 30 does not change relative to the deformation layer 30, but the position of the first electrodes 42 relative to the substrate 10 and other structures shifts with the expansion of the deformation layer 30. This causes the spacing between adjacent first electrodes 42 to increase to L2 (L2 > L1) during the fabrication of the luminescent material, thereby ensuring that the spacing between adjacent first electrodes 42 meets the accuracy requirements of the evaporation equipment and the photomask. After the luminescent material layer is prepared, external factors such as high-intensity light or high-temperature heat sources can be removed, causing the deformation layer 30 to shrink to the state before the luminescent material layer was prepared. The spacing between adjacent first electrodes 42 is also reduced to L1, thereby increasing the aperture ratio of the display module and realizing the preparation of a high PPI display module.

[0076] In some embodiments, the display module may further include a pixel definition layer 50, which may be located on the side of the planarization layer 20 away from the substrate 10, and the pixel definition layer 50 may include a plurality of pixel openings 52.

[0077] Figure 3 The diagram illustrates the fabrication process of a light-emitting material layer when multiple first electrodes 42 are disposed on a single deformable portion. Specifically, the deformable layer 30 includes multiple spaced deformable portions, with the surface of each deformable portion facing away from the substrate 10 used to form the first electrodes 42.

[0078] In some embodiments, when a first electrode 42 is disposed on a deformed portion, reference Figure 4 ,and Figure 3 Similarly, in the fabrication of the luminescent material layer, the spacing between adjacent first electrodes 42 is increased from L3 to L4 to meet the precision requirements of the evaporation equipment and the photomask. The specific process will not be detailed here; please refer to [reference needed]. Figure 3 Related descriptions.

[0079] In some implementations, reference Figure 1 The deformable layer 30 is designed in blocks, with each block called a deformable section. Adjacent deformable sections are spaced apart to ensure sufficient deformation space. In other embodiments, the deformable layer 30 can also be designed in rows or columns, with a certain spacing between adjacent rows or columns of deformable sections. The pattern of the deformable layer 30 designed in rows or columns is relatively simple, which helps to simplify the manufacturing process of the display module.

[0080] In some embodiments, the deformation layer 30 is a photoinflatable layer, which can be an inflatable hydrogel layer. The photoinflatable layer, as the deformation layer 30, has the advantages of controllable expansion and minimal damage to other film layers caused by increased light exposure.

[0081] Optionally, the first electrode 42 may be the anode of the display pixel. In some embodiments, in order to improve the flatness of the surface on which the first electrode 42 is formed, the deformation layer 30 includes a plurality of spaced deformation portions, and the planarization layer 20 includes a plurality of trenches, in which the deformation portions are disposed.

[0082] By placing the deformable portion in the trench, it is possible to prevent the deformable portion from protruding from the surface of the planarization layer 20, thus avoiding the formation of protrusions on the surface of the planarization layer 20, which is beneficial for the preparation and patterning of the electrode material on the front side.

[0083] Optionally, in some implementations, reference is still made to Figures 2-4 The distance between the top surface of the deformation layer 30 and the substrate 10 is equal to the distance between the top surface of the planarization layer 20 and the substrate 10.

[0084] The top surface of the deformation layer 30 includes the surface with the largest distance between the deformation layer 30 and the substrate 10; the top surface of the planarization layer 20 includes the surface with the largest distance between the planarization layer 20 and the substrate 10.

[0085] In this embodiment, the top surface of the deformation layer 30 is flush with the top surface of the planarization layer 20. This allows the deformation layer 30 to fill the trenches of the planarization layer 20, so that the deformation layer 30 and the planarization layer 20 together provide a flat surface for the fabrication of the first electrode 42, which is beneficial for obtaining a first electrode 42 with a good morphology.

[0086] To prevent the first electrode 42 from being crushed and damaged when the deformable layer 30 expands, in some embodiments, reference is still made to... Figures 2-4 The display module also includes: multiple protective layers 41;

[0087] The protective layer 41 is located between the deformation layer 30 and the first electrode 42.

[0088] Since the protective layer 41 is disposed between the deformation layer 30 and the first electrode 42, when the deformation layer 30 deforms, the protective layer 41 can protect the first electrode 42, avoid damage to the first electrode 42 caused by the extrusion force generated by the deformation, and improve the product preparation yield.

[0089] Optionally, the protective layer 41 is disposed around the sidewall and bottom surface of the first electrode 42;

[0090] The bottom surface of the first electrode 42 includes the surface of the first electrode 42 facing the substrate 10;

[0091] The distance between the top surface of the protective layer 41 and the substrate 10 is equal to the distance between the top surface of the planarization layer 20 and the substrate 10;

[0092] The top surface of the protective layer 41 includes the surface with the largest distance between the deformation layer 30 and the substrate 10; the top surface of the planarization layer 20 includes the surface with the largest distance between the planarization layer 20 and the substrate 10.

[0093] The protective layer 41 is disposed around the sidewall and bottom surface of the first electrode 42, which can provide comprehensive protection for the first electrode 42. In addition, the top surface of the protective layer 41 is flush with the top surface of the planarization layer 20, which can make the protective layer 41 and the planarization layer 20 cooperate to form a relatively flat surface, which is beneficial to the preparation of the first electrode 42 and subsequent film layers.

[0094] Optionally, the tensile strength of the protective layer 41 is greater than that of the first electrode 42; or the hardness of the protective layer 41 is greater than that of the first electrode 42. A protective layer 41 with higher tensile strength or hardness can better protect the first electrode 42. Optionally, the protective layer 41 can be a PMMA (Polymethyl Methacrylate) layer. PMMA material has high transparency, good hardness, and is easy to machine. Using PMMA material to make the protective layer 41 can provide good protection for the first electrode 42.

[0095] Alternatively, in some implementations, reference is made to Figure 3 The protective layer 41 is disposed in the groove of the deformation layer 30. In other embodiments, refer to Figure 5 The deformation layer 30 may not include the groove, and the protective layer 41 may be disposed on the surface of the deformation layer 30. This specification does not limit the specific location of the protective layer 41, but depends on the actual situation.

[0096] In some implementations, reference Figure 6 The display module includes a functional component area 60;

[0097] Reference Figure 2 Within the functional device area 60, the pixel definition layer 50 includes a plurality of pixel definition units 51 that are isolated from each other, and pixel openings 52 are located between adjacent pixel definition units 51.

[0098] In this embodiment, at least within the functional device region 60, the pixel definition units 51 in the pixel definition layer 50 are isolated from each other, and there is no connection between adjacent pixel definition units 51. In this way, on the one hand, the pixel definition layer 50 can reduce the occlusion of the light to be transmitted and improve the light transmittance of the functional device region 60; on the other hand, it can reduce the compression of the pixel definition layer 50 when the deformation layer 30 expands and reduce the probability of damage to the pixel definition layer 50.

[0099] Outside the functional device area 60, the pixel definition layer 50 can be as follows: Figure 2 The pixel definition layer 50 shown generally includes multiple isolated pixel definition units 51, or it may include multiple interconnected pixel definition units 51. This specification does not limit this.

[0100] Alternatively, in some implementations, such as Figure 7 As shown, the pixel definition layer 50 is a light-absorbing material layer. The fact that the pixel definition layer 50 of the display module is a light-absorbing material layer allows it to absorb natural light incident into the display module, which helps reduce the negative impact of light re-emission on the display effect. Furthermore, the light-absorbing material layer of the pixel definition layer 50 reduces the impact of light incident into the display module on the deformation layer, lowering the possibility of significant deformation of the deformation layer during daily use.

[0101] In some implementations, such as Figure 8 As shown, the deformation layer 30 is a photoinflated layer;

[0102] The display module also includes: a light-shielding layer 70;

[0103] The light-shielding layer 70 is located on the side of the substrate 10 opposite to the planarization layer 20.

[0104] In this embodiment, a light-shielding layer 70 can be provided on the back of the display module to prevent the deformation layer 30 from deforming when external light enters the interior of the display module, which may cause the deformation layer 30 to deform.

[0105] Exemplary methods

[0106] Some embodiments of this specification also provide a method for preparing a display module, such as... Figure 9 As shown, it includes:

[0107] S101: Form a substrate, a planarization layer, and a deformation layer, wherein the planarization layer is located on one side of the substrate, and the deformation layer is located on the side of the planarization layer opposite to the substrate;

[0108] S102: Forming multiple pixel openings, the pixel openings exposing at least a portion of the surface of the deformable layer;

[0109] S103: Form a first electrode, which is located in the pixel opening and on the side of the deformation layer away from the substrate;

[0110] S104: Irradiate the deformation layer to cause it to expand, increasing the spacing between adjacent first electrodes, and forming a light-emitting material layer on the side of the first electrode away from the substrate.

[0111] Optionally, the deformation layer is a photoinflated layer;

[0112] The formation of the substrate, planarization layer, and deformation layer includes:

[0113] Provide transparent substrates;

[0114] On a transparent substrate, a substrate, a planarization layer located on one side of the substrate, and a deformation layer located on the side of the planarization layer opposite to the substrate are formed.

[0115] Optionally, the irradiated deformation layer includes:

[0116] A light source is provided, which illuminates the deformation layer from the side of the transparent substrate away from the substrate.

[0117] Optionally, after forming the light-emitting material layer on the side of the first electrode away from the substrate, the method further includes:

[0118] A light-shielding layer is formed on the side of the substrate away from the planarization layer.

[0119] In this embodiment, when the deformation layer is a photoinflated layer, in order to adapt to the illumination requirements of the deformation layer during evaporation, reference is made. Figure 10 The vapor deposition substrate can be a transparent substrate A02, so that the light from the light source A01 can pass through the transparent substrate A02 and irradiate the deformation layer of the display module A03.

[0120] The transparent substrate A02 can be a PMMA substrate or inorganic glass. There can be one or more light sources A01, which can be a line light source or a point light source, etc. The size and form of the light source A01 can be set according to the different vapor deposition equipment, display module types, and photomasks.

[0121] To allow sufficient deformation space for the deformation layer of the display module, a certain distance needs to be maintained between the photomask A04 and the display module A03. This distance is designed to meet expansion requirements, and the expanded pixel openings must match the photomask A04. The evaporation source A05 is located on the side of the photomask A04 furthest from the display module A03.

[0122] In some implementations, the inconsistent expansion of the photoinflated layer under different wavelengths or illumination times can be utilized to reuse the same photomask in different display modules, thereby reducing the number of photomasks and lowering production costs.

[0123] In some embodiments, the irradiation area of ​​the light source A01 is optionally larger than the area used to form the light-emitting material layer. This ensures that the light source A01 fully irradiates the deformation layer and that the spacing between the first electrodes meets the requirements of the photomask and the evaporation equipment after the deformation layer is deformed.

[0124] For other limitations regarding the various film layers of the prepared display module, please refer to the relevant introduction to the display module above; these will not be repeated here.

[0125] Exemplary electronic devices

[0126] Accordingly, this specification also provides an electronic device, such as... Figure 11 As shown, the electronic device 100 includes a display module as described in any of the above embodiments.

[0127] In summary, the embodiments of this specification provide a display module and its fabrication method, as well as an electronic device. The display module has a deformation layer disposed on the side of the planarization layer facing away from the substrate. This deformation layer expands during the formation of the light-emitting material layer, increasing the spacing between adjacent first electrodes to meet the precision requirements of the mask and the evaporation equipment, allowing the light-emitting material layer to be accurately deposited onto the first electrodes. After the light-emitting material layer is deposited, the deformation layer shrinks to reduce the spacing between adjacent first electrodes, thereby decreasing the spacing between adjacent display pixels and improving the aperture ratio of the display module.

[0128] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0129] The embodiments described above are merely illustrative of several implementation methods outlined in this specification. While the descriptions are specific and detailed, they should not be construed as limiting the scope of the solutions provided in this specification. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this specification, and these all fall within the scope of protection of this specification. Therefore, the scope of protection for this patent should be determined by the appended claims.

Claims

1. A display module, characterized in that, include: Substrate; A planarization layer is located on one side of the substrate; A deformation layer is located on the side of the planarization layer opposite to the substrate. The deformation layer is used to expand during the formation of the light-emitting material layer and to contract after the light-emitting material layer is formed. Multiple pixel openings that expose at least a portion of the surface of the deformable layer; The first electrode is located on the side of the deformation layer away from the substrate, and the first electrode is located in the pixel opening. The side of the first electrode away from the substrate is used to deposit the light-emitting material layer. When the deformation layer expands, it causes the first electrode to move, thereby increasing the spacing between adjacent first electrodes.

2. The display module according to claim 1, characterized in that, The deformation layer includes a plurality of spaced deformation portions, and the planarization layer includes a plurality of grooves, wherein the deformation portions are disposed in the grooves.

3. The display module according to claim 1, characterized in that, The distance between the top surface of the deformation layer and the substrate is equal to the distance between the top surface of the planarization layer and the substrate; The top surface of the deformation layer includes the surface with the greatest distance between the deformation layer and the substrate; the top surface of the planarization layer includes the surface with the greatest distance between the planarization layer and the substrate.

4. The display module according to any one of claims 1-3, characterized in that, Also includes: Multiple protective layers; The protective layer is located between the deformation layer and the first electrode.

5. The display module according to claim 4, characterized in that, The protective layer is provided around the sidewalls and bottom surface of the first electrode; The bottom surface of the first electrode includes the surface of the first electrode facing the substrate; The distance between the top surface of the protective layer and the substrate is equal to the distance between the top surface of the planarization layer and the substrate; The top surface of the protective layer includes the surface with the greatest distance between the deformation layer and the substrate; the top surface of the planarization layer includes the surface with the greatest distance between the planarization layer and the substrate.

6. The display module according to claim 4, characterized in that, The tensile strength of the protective layer is greater than that of the first electrode; or The hardness of the protective layer is greater than that of the first electrode.

7. The display module according to claim 1, characterized in that, The deformation layer includes a plurality of spaced deformation portions, the surface of which opposite to the substrate is used to form the first electrode.

8. The display module according to claim 1, characterized in that, The display module includes a functional component area; The functional device area includes a pixel definition layer, which includes a plurality of pixel definition units isolated from each other, and the pixel opening is located between adjacent pixel definition units.

9. The display module according to claim 8, characterized in that, The pixel definition layer is a light-absorbing material layer.

10. The display module according to any one of claims 1-3, characterized in that, The deformation layer is a photoinflatable layer; The display module further includes: a light-shielding layer; The light-shielding layer is located on the side of the substrate opposite to the planarization layer.

11. A method for manufacturing a display module, characterized in that, include: A substrate, a planarization layer, and a deformation layer are formed, wherein the planarization layer is located on one side of the substrate, and the deformation layer is located on the side of the planarization layer opposite to the substrate; Multiple pixel openings are formed, the pixel openings exposing at least a portion of the surface of the deformable layer; A first electrode is formed, which is located in the pixel opening and on the side of the deformation layer away from the substrate; The deformation layer is irradiated to cause it to expand and move the first electrode to increase the spacing between adjacent first electrodes, thereby forming a light-emitting material layer on the side of the first electrode facing away from the substrate.

12. The preparation method according to claim 11, characterized in that, The deformation layer is a photoinflatable layer; The formation of the substrate, planarization layer, and deformation layer includes: Provide transparent substrates; On the transparent substrate, a substrate, a planarization layer located on one side of the substrate, and a deformation layer located on the side of the planarization layer opposite to the substrate are formed.

13. The preparation method according to claim 12, characterized in that, The irradiation of the deformed layer includes: A light source is provided to illuminate the deformation layer from the side of the transparent substrate away from the substrate.

14. The preparation method according to claim 11, characterized in that, After forming a light-emitting material layer on the side of the first electrode opposite to the substrate, the process further includes: A light-shielding layer is formed on the side of the substrate opposite to the planarization layer.

15. The preparation method according to claim 13, characterized in that, The illumination area of ​​the light source is larger than the area used to form the luminescent material layer.

16. An electronic device, characterized in that, include: The display module as described in any one of claims 1-10, or the display module prepared by the preparation method as described in any one of claims 11-15.

Images