A display module and a display device

Abstract

A display module and a display device, the display module comprising: a display substrate; a cover plate located on one side of the display substrate; a lens layer located on a side of the cover plate away from the display substrate; a frame, the frame comprising: a first fixing portion located on the outside of the cover plate, the first fixing portion abutting the lens layer; a second fixing portion connected to the first fixing portion, the second fixing portion located between the cover plate and the lens layer, the second fixing portion abutting the cover plate; a light propagation gap being provided between the second fixing portion and the lens layer.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to, but are not limited to, the field of display technology, and specifically relate to a display module and a display device. Background Art

[0002] Organic Light Emitting Diodes (OLEDs) and Quantum-dot Light Emitting Diodes (QLEDs) are active light-emitting display devices with advantages such as self-luminescence, wide viewing angles, high contrast, low power consumption, extremely fast response times, thinness, flexibility, and low cost. With the continuous advancement of display technology, flexible displays using OLEDs or QLEDs as light-emitting devices and thin-film transistors (TFTs) for signal control have become mainstream products in the display field.

[0003] In recent years, with the emergence of high-tech products such as AR / VR, demand for silicon-based OLED microdisplays has continued to grow. In real-world applications, silicon-based OLEDs require optical lenses to achieve near-eye display. Furthermore, to further enhance the reliability and optical performance of silicon-based OLEDs, modules with double-layer glass cover plates are often used. This double-layer glass cover plate structure allows for a better structural match between the optical lens and the silicon-based OLED. Summary of the Invention

[0004] The following is an overview of the subject matter described in detail in this disclosure. This overview is not intended to limit the scope of the claims.

[0005] In a first aspect, an embodiment of the present disclosure provides a display module, comprising:

[0006] display substrate;

[0007] a cover plate, located on one side of the display substrate;

[0008] a lens layer, located on a side of the cover plate away from the display substrate;

[0009] A frame, the frame comprising:

[0010] a first fixing portion, located on the outer side of the cover plate, the first fixing portion abutting against the lens layer;

[0011] The second fixing portion is connected to the first fixing portion, and is located between the cover plate and the lens layer. The second fixing portion abuts against the cover plate. A light propagation gap is provided between the second fixing portion and the lens layer.

[0012] In an exemplary embodiment, a vertical cross-section of the second fixing portion is rectangular or polygonal.

[0013] In an exemplary embodiment, the second fixing portion includes a side wall, a bottom wall, and a first surface connecting the side wall and the bottom wall, the side wall is connected to the first fixing portion, the bottom wall abuts against the cover plate, and the light propagation gap is provided between the first surface and the lens layer.

[0014] In an exemplary embodiment, the first surface includes at least one of a flat surface, a concave-convex surface, a curved surface, and a stepped surface.

[0015] In an exemplary embodiment, the second fixing portion is integrally formed with the first fixing portion.

[0016] In an exemplary embodiment, the second fixing portion does not overlap with an orthographic projection of the display substrate on a plane where the display module is located.

[0017] In an exemplary embodiment, a glue layer is further included, wherein the glue layer is located between the second fixing portion and the cover plate and bonds the second fixing portion to the cover plate.

[0018] In an exemplary embodiment, a surface of the second fixing portion facing the cover plate is a plane.

[0019] In an exemplary embodiment, the cover plate includes a first plate and a second plate, the first plate is located on the side of the second plate close to the display substrate, and the orthographic projection of the first plate on the plane where the display module is located is located in the orthographic projection of the second plate on the plane where the display module is located.

[0020] In an exemplary embodiment, the second plate includes a light-transmitting portion and a peripheral portion located outside the light-transmitting portion, the light-transmitting portion overlaps with the orthographic projection of the display substrate on the plane where the display module is located, the peripheral portion does not overlap with the orthographic projection of the display substrate on the plane where the display module is located, and the second fixing portion abuts against the peripheral portion.

[0021] In an exemplary embodiment, a side wall of the peripheral portion is connected to the first fixing portion.

[0022] In an exemplary embodiment, the first fixing portion and the orthographic projection of the display substrate on the plane where the display module is located do not overlap.

[0023] In an exemplary embodiment, the cover plate is made of glass.

[0024] In an exemplary embodiment, the display substrate includes a plurality of pixel island assemblies, the pixel island assemblies include a plurality of light emitting elements, the lens layer includes a plurality of micro lens arrays, and the plurality of pixel island assemblies are arranged corresponding to the plurality of micro lens arrays.

[0025] In a second aspect, an embodiment of the present disclosure further provides a display device, comprising the display module described above.

[0026] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0028] Figure 1 This is a schematic diagram of the structure of the display module according to an embodiment of the present application;

[0029] Figure 2 This is a cross-sectional view of the display module according to the embodiment of the present application. Figure 1 ;

[0030] Figure 3 A three-dimensional diagram of a display module according to an embodiment of the present application;

[0031] Figure 4 This is a cross-sectional view of a cover plate in a display module according to an embodiment of the present application;

[0032] Figure 5a This is a cross-sectional view of the display module according to the embodiment of the present application. Figure 2 ;

[0033] Figure 5b This is a cross-sectional view of the display module according to the embodiment of the present application. Figure 3 ;

[0034] Figure 5c This is a cross-sectional view of the display module according to the embodiment of the present application. Figure 4 . DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Note that the embodiments can be implemented in a variety of different forms. A person of ordinary skill in the art can easily understand the fact that the methods and contents can be transformed into various forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be arbitrarily combined with each other.

[0036] In the drawings, the sizes of various components, layer thicknesses, or regions may be exaggerated for clarity. Therefore, one embodiment of the present disclosure is not necessarily limited to these dimensions, and the shapes and sizes of the components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate idealized examples, and one embodiment of the present disclosure is not limited to the shapes or numerical values shown in the drawings.

[0037] In this specification, ordinal numbers such as “first”, “second” and “third” are provided to avoid confusion among constituent elements, and are not intended to limit the number.

[0038] In this specification, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the purpose of facilitating the description of this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present disclosure. The positional relationships of constituent elements may be appropriately changed depending on the direction in which each constituent element is described. Therefore, the present disclosure is not limited to the words and phrases described in the specification and may be appropriately replaced according to the circumstances.

[0039] In this specification, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections, indirect connections through intermediaries, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure.

[0040] In this specification, a transistor refers to a device that includes at least three terminals: a gate electrode, a drain electrode, and a source electrode. A transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain electrode) and a source electrode (source electrode terminal, source region, or source electrode), and current can flow through the drain electrode, the channel region, and the source electrode. Note that in this specification, the channel region refers to the region through which current primarily flows.

[0041] In this specification, the first electrode can be a drain electrode and the second electrode can be a source electrode, or vice versa. The functions of "source electrode" and "drain electrode" may be interchanged when using transistors with opposite polarity or when the direction of current changes during circuit operation. Therefore, in this specification, "source electrode" and "drain electrode" may be interchanged.

[0042] In this specification, "electrically connected" includes components connected together via an element having some electrical function. There are no particular limitations on the "element having some electrical function" as long as it enables the transfer of electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other components with various functions.

[0043] In this specification, "parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and thus also includes a state where the angle is greater than -5° and less than 5°. Furthermore, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and thus also includes a state where the angle is greater than 85° and less than 95°.

[0044] In this specification, the terms "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced with "conductive film." Similarly, "insulating film" may be replaced with "insulating layer."

[0045] The term "about" in the present disclosure refers to a numerical value that is not strictly defined and allows for process and measurement errors.

[0046] An embodiment of the present application provides a display module, which includes:

[0047] display substrate;

[0048] a cover plate, located on one side of the display substrate;

[0049] a lens layer, located on a side of the cover plate away from the display substrate;

[0050] A frame, the frame comprising:

[0051] a first fixing portion, located on the outer side of the cover plate, the first fixing portion abutting against the lens layer;

[0052] The second fixing portion is connected to the first fixing portion, and is located between the cover plate and the lens layer. The second fixing portion abuts against the cover plate. A light propagation gap is provided between the second fixing portion and the lens layer.

[0053] Figure 1 This is a schematic diagram of the structure of the display module of the embodiment of the present application. In an exemplary embodiment, as Figure 1 As shown, the display module of the embodiment of the present application can be applied to a near-eye display device. The display module includes a display substrate 10, a cover plate 20, and a lens layer 30. The cover plate 20 is located on the light-emitting side of the display substrate 10, and the lens layer 30 is located on the side of the cover plate 20 away from the display substrate 10.

[0054] In an exemplary embodiment, the display substrate 10 may include a plurality of pixel island assemblies 101, and the pixel island assembly 101 includes a plurality of light-emitting elements. The lens layer 30 may include a plurality of microlens arrays 301. The plurality of pixel island assemblies 101 are arranged corresponding to the plurality of microlens arrays 301. The display module of the embodiment of the present application adopts a combination of a microlens array 301 and a regional pixel island (pixel island assembly) to achieve near-eye display. Each group of microlenses-light-emitting elements provides a portion of the field of view in the complete field of view. The imaging light beam enters the human eye and performs image angle stitching display on the retina. The display module can achieve a near-eye VR / AR / MR splicing display with a large field of view, light weight, and high imaging capability.

[0055] For ease of understanding, the following is a brief description of the working principle of the display module:

[0056] According to an embodiment of the present invention, the display module utilizes a pixel island assembly 101 and a microlens array 301 to realize display by splicing light beam angles. The pixel island assembly 101 has a plurality of regularly arranged light-emitting elements, for example, it may include a plurality of organic light-emitting diodes (OLEDs) arranged in columns. Each OLED is responsible for displaying a specific angle of the overall display screen. For example, the OLED located at the center of a column is responsible for displaying a display screen from -2 to 2 degrees. The light emitted by the OLED passes through the corresponding microlens in the microlens array 301 and enters the human eye. A combination of multiple OLEDs and microlenses jointly displays the display screen in display effects such as VR or AR. Multiple beams of parallel light with a certain beam width and the same angle enter the human eye and are focused on the same point on the retina after the lens converges. The microlens array 301 controls the imaging light emitted by the light-emitting elements in two adjacent pixel island assemblies 101 to connect the angles. After the imaging light beam enters the human eye, a splicing display of sub-images is realized on the retina.

[0057] In an exemplary embodiment, the display substrate may display an image by emitting light. The display substrate may be any type of flat panel display substrate or curved display substrate, such as a liquid crystal display substrate, an organic light-emitting display substrate, a quantum dot light-emitting display substrate, a micro-light-emitting diode display substrate, or an electrophoretic display substrate. The display substrate may be a flexible display substrate. For example, the display substrate may be a flexible light-emitting display substrate, a flexible electrophoretic display substrate, a flexible electrowetting display substrate, a flexible micro-light-emitting diode display substrate, or a flexible quantum dot light-emitting display substrate, but the embodiments of the present disclosure are not limited thereto.

[0058] In an exemplary embodiment, the display substrate 10 may adopt a silicon-based organic light-emitting diode (OLED) microdisplay, which refers to a display device that integrates millions or even more light-emitting pixels on a substrate (silicon-based material) with a size of less than 2 inches.

[0059] In some embodiments, the light-emitting element in the display substrate may further include a micro light-emitting diode (MLED) or a quantum dot light-emitting diode (QLED).

[0060] In an exemplary embodiment, the display substrate may be rectangular in shape. In some embodiments, the display substrate may also be circular, elliptical, or polygonal in shape such as triangular, pentagonal, hexagonal, or octagonal.

[0061] Figure 2 This is a cross-sectional view of the display module according to the embodiment of the present application. Figure 1 ; Figure 3 This is a three-dimensional diagram of the display module of the embodiment of the present application. In an exemplary embodiment, as Figure 2 and Figure 3 As shown, in the direction perpendicular to the plane where the display module is located (direction Z), the display module of the embodiment of the present application includes a display substrate 10, a cover plate 20, a lens layer 30 and a frame 40. The display substrate 10, the cover plate 20 and the lens layer 30 are stacked in sequence along the direction perpendicular to the plane where the display module is located, and the orthographic projections of the display substrate 10, the cover plate 20 and the lens layer 30 on the plane where the display module is located overlap.

[0062] In an exemplary embodiment, Figure 2 and Figure 3 As shown, the frame 40 includes a first fixing portion 41 and a second fixing portion 42 that are interconnected. The first fixing portion 41 is a plate-like structure and is located outside the display substrate 10 and the cover plate 20. For example, the first fixing portion 41 is located on opposite sides of the display substrate 10 and the cover plate 20. The first fixing portion 41 is located near one end of the lens layer 30 and abuts against the lens layer 30 to support the lens layer 30. This creates a space 60 for light propagation between the lens layer 30 and the cover plate 20. Light emitted from the display substrate 10, after passing through the cover plate 20, passes through the light propagation space 60, enters the lens layer 30, and is incident on the human eye.

[0063] In an exemplary embodiment, the orthographic projections of the first fixing portion 41 and the display substrate 10 on the plane where the display module is located do not overlap, thereby preventing the first fixing portion 41 from blocking the emission of light emitted from the display substrate 10 .

[0064] In an exemplary embodiment, Figure 2 and Figure 3As shown, the second fixing portion 42 is strip-shaped. The second fixing portion 42 is connected to the inner wall of the first fixing portion 41 on the side facing the cover plate 20, and the second fixing portion 42 is located between the cover plate 20 and the lens layer 30. The side of the second fixing portion 42 close to the cover plate 20 abuts against the surface of the cover plate 20, so that the second fixing portion 42 and the surface of the cover plate 20 are tightly fitted, thereby ensuring the stability of the cover plate 20. A light propagation gap 50 is provided between the side of the second fixing portion 42 close to the lens layer 30 and the lens layer 30. The lateral light emitted by the display substrate 10 can pass through the light propagation gap 50 and enter the lens layer 30, thereby improving the light output rate of the lateral light emitted by the display substrate 10 and preventing the lateral light emitted by the display substrate 10 from being blocked by the second fixing portion 42.

[0065] In an exemplary embodiment, Figure 2 and Figure 3 As shown, the orthographic projections of the second fixing portion 42 and the display substrate 10 on the plane where the display module is located do not overlap, thereby preventing the second fixing portion 42 from blocking the emission of light emitted by the display substrate 10 .

[0066] The above-described structure of the display module frame of the embodiment of the present application solves the problem of lateral light emitted by the display substrate 10 being blocked by the light transmission gap 50, thereby improving the light extraction efficiency of the lateral light from the display substrate 10. Furthermore, the second fixing portion 42 ensures the stability of the cover plate 20. Furthermore, the above-described structure of the display module frame of the embodiment of the present application does not increase the size of the display module.

[0067] In an exemplary embodiment, the vertical cross-section of the second fixing portion may be rectangular or polygonal. The polygon may include a pentagon, a hexagon, and the like. For example, the vertical cross-section of the second fixing portion 42 may be rectangular, and the second fixing portion 42 includes a bottom wall 421 and a side wall 422. The side wall 422 of the second fixing portion 42 close to the first fixing portion 41 is connected to the first fixing portion 41. The bottom wall 421 of the second fixing portion 42 is a surface close to the cover plate 20. The bottom wall 421 of the second fixing portion 42 abuts against the surface of the cover plate 20 to ensure the contact area between the second fixing portion 42 and the cover plate 20, thereby ensuring the stability of the display module, as shown in FIG. Figure 2 shown.

[0068] In an exemplary embodiment, the surface of the second fixing portion 42 facing the cover plate 20 is a plane, and the second fixing portion 42 abuts against the cover plate 20 through the plane to ensure the contact area between the second fixing portion 42 and the cover plate 20, thereby ensuring the stability of the display module.

[0069] In some embodiments, the surface of the second fixing portion facing the cover plate may also be a non-planar structure. For example, the surface of the second fixing portion facing the cover plate may also be a concave-convex surface or a curved surface. The embodiments of this application will not be described in detail here.

[0070] In an exemplary embodiment, the first fixing portion 41 and the second fixing portion 42 can be integrally formed to ensure the stability of the frame 40. For example, the first fixing portion 41 and the second fixing portion 42 are both made of plastic and are injection molded into one piece.

[0071] In some embodiments, the first fixing portion and the second fixing portion may also be two independent components connected to each other, for example, the first fixing portion and the second fixing portion are bonded to each other.

[0072] In an exemplary embodiment, the display module of the present application further includes an adhesive layer located between the second fixing portion 42 and the cover plate 20 . The adhesive layer bonds the second fixing portion 42 to the cover plate 20 to improve the strength of the connection between the second fixing portion 42 and the cover plate 20 .

[0073] Figure 4 The cross-sectional view of the cover plate in the module is shown in the embodiment of the present application. In an exemplary embodiment, as Figure 4 As shown, the cover plate 20 in the display module of the embodiment of the present application includes a first plate body 21 and a second plate body 22, and the first plate body 21 and the second plate body 22 are stacked in a direction perpendicular to the plane where the display module is located. The first plate body 21 is located on the side of the second plate body 22 close to the display substrate 10. The orthographic projections of the first plate body 21 and the display substrate 10 on the plane where the display module is located overlap. For example, the orthographic projection of the first plate body 21 on the plane where the display module is located completely overlaps with the orthographic projection of the display substrate 10 on the plane where the display module is located. The orthographic projection of the first plate body 21 on the plane where the display module is located is located in the orthographic projection of the second plate body 22 on the plane where the display module is located. The area of the orthographic projection of the first plate body 21 on the plane where the display module is located is smaller than the area of the orthographic projection of the second plate body 22 on the plane where the display module is located, so that the edge of the first plate body 21 and the edge of the second plate body 22 form a step shape.

[0074] In an exemplary embodiment, Figure 4 As shown, the second plate 22 includes a light-transmitting portion 221 and a peripheral portion 222 located outside the light-transmitting portion 221. The light-transmitting portion 221 overlaps with the orthographic projections of the first plate 21 and the display substrate 10 on the plane where the display module resides. For example, the orthographic projections of the light-transmitting portion 221 on the plane where the display module resides completely overlap with the orthographic projections of the first plate 21 and the display substrate 10 on the plane where the display module resides. The light-transmitting portion 221 transmits light emitted from the display substrate 10, allowing the light emitted from the display substrate 10 to enter the space 60 for light propagation.

[0075] In an exemplary embodiment, Figure 4As shown, the peripheral portion 222 does not overlap with the orthographic projection of the first plate 21 and the display substrate 10 on the plane where the display module is located. The second fixed portion 42 of the frame 20 overlaps with the orthographic projection of the peripheral portion 222 on the plane where the display module is located, but does not overlap with the orthographic projection of the transparent portion 221 on the plane where the display module is located. The second fixed portion 42 abuts against the peripheral portion 222, thereby preventing the second fixed portion 42 from occupying the space of the transparent portion 221 and affecting the transmittance of light emitted by the display substrate 10.

[0076] In an exemplary embodiment, Figure 4 As shown, the side wall of the peripheral portion 222 is connected to the side wall of the first fixing portion 41 , for example, the side wall of the peripheral portion 222 is in contact with the side wall of the first fixing portion 41 , or there is a gap between the side wall of the peripheral portion 222 and the side wall of the first fixing portion 41 .

[0077] In an exemplary embodiment, the cover plate 20 may be made of a light-transmitting material. For example, the cover plate 20 may be made of glass, that is, the first plate body 21 and the second plate body 22 may be made of glass.

[0078] Figure 5a This is a cross-sectional view of the display module according to the embodiment of the present application. Figure 2 ; Figure 5b This is a cross-sectional view of the display module according to the embodiment of the present application. Figure 3 ; Figure 5c This is a cross-sectional view of the display module according to the embodiment of the present application. Figure 4 In an exemplary embodiment, as Figure 5a 、 5b As shown in FIG5c , the second fixing portion 42 has a triangular vertical cross-section. The second fixing portion 42 includes a bottom wall 421′, side walls 422′, and a first surface 423 connecting the side walls 421′ and the bottom wall 422′. The bottom wall 421′ and the side walls 422′ may form a certain angle. For example, the bottom wall 421′ and the side walls 422′ may form a 90-degree angle, meaning that the bottom wall 421′ and the side walls 422′ are perpendicular to each other. The first surface 423 and the bottom wall 421′ may form an acute angle. The bottom wall 421′ of the second fixing portion 42 is the surface closest to the cover plate 20. The bottom wall 421′ of the second fixing portion 42 abuts the surface of the cover plate 20. The side walls 422′ of the second fixing portion 42 are connected to the inner wall of the first fixing portion 41. A light propagation gap 50 is provided between the first surface 423 of the second fixing portion 42 and the lens layer 30.

[0079] In an exemplary embodiment, the first surface 423 of the second fixing portion 42 may adopt various structures. For example, the first surface 423 of the second fixing portion 42 may be a plane, such as Figure 5a Alternatively, the first surface 423 of the second fixing portion 42 may be an inwardly concave curved surface, such as Figure 5bAlternatively, the first surface 423 of the second fixing portion 42 may be a stepped surface including a plurality of step structures, such as Figure 5c Alternatively, the first surface of the second fixing portion may be a concave-convex surface.

[0080] The second fixing portion with a triangular vertical cross section in the display module of the embodiment of the present application can further increase the space of the light propagation gap 50 relative to the first surface of the second fixing portion with a rectangular vertical cross section, reduce the obstruction of the lateral light of the display substrate 10, and improve the light output rate of the lateral light of the display substrate 10.

[0081] Embodiments of the present invention further provide a display device comprising any of the aforementioned display modules. The display device includes a mobile phone, a tablet computer, a smart wearable product (e.g., a smartwatch, a wristband, etc.), a personal digital assistant (PDA), an in-vehicle computer, and the like. The embodiments of this application do not impose any particular limitations on the specific form of the display device.

[0082] The drawings in this disclosure only relate to the structures involved in this disclosure, and other structures may refer to general designs. In the absence of conflict, the embodiments of this disclosure, that is, the features in the embodiments, may be combined with each other to obtain new embodiments.

[0083] It should be understood by those skilled in the art that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, and all should be included in the scope of the claims of the present disclosure.

Claims

1. A display module, characterized in that: include: display substrate; a cover plate, located on one side of the display substrate; a lens layer, located on a side of the cover plate away from the display substrate; A frame, the frame comprising: a first fixing portion, located on the outer side of the cover plate, the first fixing portion abutting against the lens layer; a second fixing portion connected to the first fixing portion, the second fixing portion being located between the cover plate and the lens layer, the second fixing portion abutting against the cover plate; a light propagation gap being provided between the second fixing portion and the lens layer; The cover plate includes a second plate body, which includes a light-transmitting portion and a peripheral portion located outside the light-transmitting portion. The light-transmitting portion overlaps with the orthographic projection of the display substrate on the plane where the display module is located, and the peripheral portion does not overlap with the orthographic projection of the display substrate on the plane where the display module is located. The second fixing portion abuts against the peripheral portion.

2. The display module according to claim 1, wherein: The vertical cross-section of the second fixing portion is rectangular or polygonal.

3. The display module according to claim 1, wherein: The second fixing portion includes a side wall, a bottom wall, and a first surface connecting the side wall and the bottom wall. The side wall is connected to the first fixing portion, the bottom wall is in contact with the cover plate, and the light propagation gap is provided between the first surface and the lens layer.

4. The display module according to claim 3, wherein: The first surface includes at least one of a flat surface, a concave-convex surface, a curved surface, and a stepped surface.

5. The display module according to any one of claims 1 to 4, characterized in that: The second fixing portion is integrally formed with the first fixing portion.

6. The display module according to any one of claims 1 to 4, characterized in that: The orthographic projection of the second fixing portion and the display substrate on the plane where the display module is located does not overlap.

7. The display module according to any one of claims 1 to 4, characterized in that: It also includes an adhesive layer, which is located between the second fixing part and the cover plate and bonds the second fixing part to the cover plate.

8. The display module according to any one of claims 1 to 4, characterized in that: A surface of the second fixing portion facing the cover plate is flat.

9. The display module according to any one of claims 1 to 4, characterized in that: The cover plate further includes a first plate body, which is located on a side of the second plate body close to the display substrate, and the orthographic projection of the first plate body on the plane where the display module is located is located in the orthographic projection of the second plate body on the plane where the display module is located.

10. The display module according to any one of claims 1 to 4, characterized in that: The side wall of the peripheral portion is connected to the first fixing portion.

11. The display module according to any one of claims 1 to 4, characterized in that: The orthographic projections of the first fixing portion and the display substrate on the plane where the display module is located do not overlap.

12. The display module according to any one of claims 1 to 4, characterized in that: The cover plate is made of glass.

13. The display module according to any one of claims 1 to 4, characterized in that: The display substrate includes a plurality of pixel island components, the pixel island components include a plurality of light-emitting elements, the lens layer includes a plurality of microlens arrays, and the plurality of pixel island components are arranged corresponding to the plurality of microlens arrays.

14. A display device, characterized in that: A display module comprising any one of claims 1 to 13.

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