Display module and display device

Abstract

The embodiment of the invention provides a display module and a display device, relates to the technical field of display, and is used for reducing the problem of'display ghosting 'generated by the display device. The display module comprises a display panel and a cover plate. The display panel is provided with a display area. The cover plate is located on the display side of the display panel and comprises a first sub-part and a second sub-part. The orthographic projection of the first sub-part on the display panel covers the display area of the display panel, and an interval is formed between the orthographic projection boundary and the boundary of the display area. The second sub-part is located on the side, away from the display panel, of the first sub-part, the orthographic projection boundary of the second sub-part on the display panel is located in the orthographic projection boundary of the first sub-part on the display panel, and a gap is formed between the second sub-part and the boundary of the display area. Wherein the side wall of the second sub-part is provided with a concave-convex structure, and the concave-convex structure extends in the circumferential direction of the second sub-part and surrounds at least part of the second sub-part. The display module is used for displaying images.

Description

Technical Field

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

[0002] Organic light emitting diodes (OLED) have been widely used in the display field due to their advantages such as self-luminescence, low driving voltage, high luminous efficiency, fast response speed and flexible display. Summary of the invention

[0003] The purpose of the embodiments of the present disclosure is to provide a display module and a display device, so as to reduce the problem of "display ghosting" generated by the display device.

[0004] To achieve the above objectives, the embodiments of the present disclosure provide the following technical solutions:

[0005] On the one hand, a display module is provided. The display module includes a display panel and a cover plate. The display panel has a display area. The cover plate is located on the display side of the display panel, and the cover plate includes a first sub-section and a second sub-section. The orthographic projection of the first sub-section on the display panel covers the display area of ​​the display panel, and the orthographic projection boundary is spaced apart from the boundary of the display area. The second sub-section is located on a side of the first sub-section away from the display panel, and the orthographic projection boundary of the second sub-section on the display panel is located within the orthographic projection boundary of the first sub-section on the display panel, and is spaced apart from the boundary of the display area. Wherein, the side wall of the second sub-section is provided with a concave-convex structure, and the concave-convex structure extends along the circumference of the second sub-section and surrounds at least part of the second sub-section.

[0006] The concave-convex structure can reflect at least part of the light in the second area that is transmitted to the human eye to the first area, and emit it from the first area. Therefore, the cover plate provided in some embodiments of the present disclosure can improve the problem of light being transmitted from the second area to the human eye, and reduce the risk of the display device producing a "ghost display" problem caused by light being transmitted to the human eye.

[0007] In some embodiments, a surface roughness of a sidewall of the second sub-portion is less than or equal to 10 nm.

[0008] In some embodiments, the concave-convex structure includes a plurality of grooves arranged along a first direction, and the plurality of grooves are arranged continuously and / or at intervals; wherein the first direction is perpendicular to the cover plate.

[0009] In some embodiments, the maximum depth of the groove is greater than the distance between two adjacent grooves.

[0010] In some embodiments, the concave-convex structure includes a groove and / or a protrusion.

[0011] In some embodiments, a distance between an end of the concave-convex structure away from the first sub-portion and the first sub-portion is greater than 1 / 2 of a thickness of the second sub-portion.

[0012] In some embodiments, a distance between an end of the concave-convex structure close to the first sub-portion and the first sub-portion is less than or equal to 1 / 2 of a thickness of the second sub-portion.

[0013] In some embodiments, the edge of the surface of the second sub-section away from the first sub-section is chamfered; the ratio of the distance between the end of the concave-convex structure away from the first sub-section and the surface of the second sub-section away from the first sub-section to the thickness of the second sub-section is 0.05 to 0.2.

[0014] In some embodiments, a shape of an orthographic projection of a side wall of the second sub-portion on the display panel is substantially circular.

[0015] In some embodiments, the groove extends along the circumference of the first sub-section, with two ends being a first end and a second end, the second end being located on a side of the first end close to the first sub-section to form a first thread. The groove surrounds the second sub-section at least three times.

[0016] In some embodiments, the boundary line of the orthographic projection of the concavo-convex structure on the reference surface includes an arc line and a straight line. Wherein, the reference surface is perpendicular to the cover plate and perpendicular to the boundary of the second sub-section.

[0017] In some embodiments, the concave-convex structure of the second sub-portion in the cover plate includes a groove, and the ratio of the maximum depth of the groove to the distance between the boundary of the display area in the display panel and the boundary of the orthographic projection of the side wall of the second sub-portion on the display panel is 0.05 to 1.

[0018] In some embodiments, a distance between a boundary of a display area in the display panel and a boundary of an orthographic projection of a side wall of the second sub-portion on the display panel is 150 μm to 300 μm.

[0019] On the other hand, a display device is provided. The display device comprises: a display module and a middle frame as described in any of the above embodiments. The middle frame is located on a side of the first sub-portion of the cover plate away from the display panel, the middle frame extends along the circumference of the second sub-portion of the cover plate and surrounds the first sub-portion; the middle frame wraps at least part of the concave-convex structure of the second sub-portion.

[0020] The above-mentioned display device has the same structure and beneficial technical effects as the display panels provided in some of the above-mentioned embodiments, which will not be described in detail here.

[0021] In some embodiments, the second end is located on a side of the first end close to the first sub-portion to form a first thread, and a side wall of the middle frame close to the second sub-portion is provided with a second thread, and the first thread and the second thread are screwed together.

[0022] In some embodiments, the middle frame and the cover plate enclose the accommodating cavity; the display device further includes an adhesive block, the adhesive block is located in the accommodating cavity, and the middle frame and the cover plate are bonded by the adhesive block.

[0023] In some embodiments, the display device also includes a shading layer, which is located between the display panel and the cover plate and surrounds the display area of ​​the display panel; the orthographic projection of the shading layer on the display panel at least partially overlaps with the orthographic projection of the portion of the first sub-portion that exceeds the second sub-portion on the display panel.

[0024] In some embodiments, an orthographic projection of the light shielding layer on the display panel partially overlaps with the second sub-portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0026] Figure 1 is a structural diagram of a display device according to some embodiments;

[0027] Figure 2 is a structural diagram of a circular display device according to some embodiments;

[0028] Figure 3 is another structural diagram of a circular display device according to some embodiments;

[0029] Figure 4 is another structural diagram of a square display device according to some embodiments;

[0030] Figure 5 for Figure 2 A cross-sectional view along section line CC;

[0031] Figure 6 for Figure 5 A partial enlarged view of D in the middle;

[0032] Figure 7 for Figure 5 Another partial enlargement of middle D;

[0033] Figure 8 for Figure 5 Another partial enlargement of middle D;

[0034] Fig. 9 for Figure 5 Another partial enlargement of middle D;

[0035] Fig.10 for Figure 5 Another partial enlargement of middle D;

[0036] Fig.11 for Figure 5 Another partial enlargement of middle D;

[0037] Fig.12 for Figure 5 Another partial enlargement of middle D;

[0038] Fig.13 for Figure 5 Another partial enlargement of D

[0039] Fig.14 is a structural diagram of a wave according to some embodiments;

[0040] Fig.15 is another structural diagram of a small wave according to some embodiments;

[0041] Fig.16 A structural diagram of a middle frame and a cover plate connected by threads according to some embodiments;

[0042] Fig.17 A structural diagram of a middle frame and a cover plate connected by bonding blocks according to some embodiments;

[0043] Fig.18 is a flow chart of a method for preparing a cover plate according to some embodiments. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0045] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments" and "including" are used interchangeably.

[0046] The terms "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0047] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0048] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. As another example, when describing some embodiments, the term "coupled" may be used to indicate that two or more components are in direct physical or electrical contact. However, the term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0049] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0050] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0051] As used herein, the term "if" is optionally interpreted to mean "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined that" or "if [a stated condition or event] is detected" are optionally interpreted to mean "upon determining that" or "in response to determining that" or "upon detecting [a stated condition or event]" or "in response to detecting [a stated condition or event]," depending on the context.

[0052] The use of "adapted to" or "configured to" herein is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0053] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0054] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of variation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0055] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0056] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0057] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0058] Some embodiments of the present disclosure provide a display device 1000, such as Figure 1 As shown, the display device 1000 can be any device that displays either moving (e.g., video) or fixed (e.g., still image) and whether text or image. Exemplarily, the display device 1000 can be any product or component with display function, such as a television, a laptop, a tablet computer, a mobile phone, a personal digital assistant (PDA), a navigator, a wearable device, an augmented reality (AR) device, a virtual reality (VR) device, etc.

[0059] The display device 1000 may be a liquid crystal display (LCD), an organic light emitting diode (OLED), a quantum dot light emitting diode (QLED), an active-matrix organic light emitting diode (AMOLED), a micro light emitting diode (MicroLED), or a sub-millimeter light emitting diode (MiniLED). MicroLED refers to an LED chip with a size of less than 50 μm, and MiniLED refers to an LED chip with a size of 50 μm to 200 μm.

[0060] In the following, some embodiments of the present disclosure are schematically described by taking the display device 1000 as an organic light emitting diode display device 1000 as an example, but the implementation of the present disclosure is not limited thereto, and any other display device 1000 may also be considered as long as the same technical concept is applied.

[0061] For example, Figure 2 to Figure 4 As shown, in the case where the display device 1000 is a wearable device, the display device 1000 may be as follows Figure 2 and Figure 3 round watch as shown, or Figure 4 Square watch shown.

[0062] In the following, some embodiments of the present disclosure are schematically described by taking the display device 1000 as a round watch as an example, but the implementation of the present disclosure is not limited thereto, and any other display device 1000 may also be considered as long as the same technical concept is applied.

[0063] like Figure 2 to Figure 5 As shown, the display device 1000 includes a display module 100. The display module 100 includes a display panel 10 and a cover plate 20.

[0064] like Figure 2 As shown, the display panel 10 includes a display area A ( Figure 2 The area enclosed by the dotted line in the middle) and the peripheral area B ( Figure 2 The area outside the area enclosed by the dashed line) Figure 2 to Figure 4 In the figure, the peripheral area B is arranged around the display area A for illustration.

[0065] In some examples, such as Figure 2 and Figure 3 As shown, the display area A is roughly circular in shape.

[0066] In this article, "substantially circular or elliptical" means that the shape is circular or elliptical as a whole, but is not limited to a standard circular or elliptical shape. That is, the "circular or elliptical" here includes not only a substantially circular or elliptical shape, but also a shape similar to a circular or elliptical shape.

[0067] The display area A is an area for displaying images and is configured to set a plurality of pixel units. The peripheral area B is an area for not displaying images and is configured to set a display driving circuit, for example, a gate driving circuit and a source driving circuit.

[0068] like Figure 5 As shown, the display panel 10 has a display side 10A and a non-display side 10B that are arranged opposite to each other. It should be noted that the display side 10A refers to the side of the display panel 10 that displays an image ( Figure 5The non-display side 10B refers to the other side opposite to the display side 10A ( Figure 5 The lower side of the display panel 10).

[0069] like Figure 5 As shown, the cover plate 20 is located at the display side 10A of the display panel 10. The cover plate 20 includes a first sub-portion 21 and a second sub-portion 22.

[0070] The orthographic projection of the first sub-portion 21 on the display panel 10 covers the display area A, and the orthographic projection boundary is spaced apart from the boundary of the display area A. The second sub-portion 22 is located on a side of the first sub-portion 21 away from the display panel 10, and the orthographic projection boundary of the second sub-portion 22 on the display panel 10 is located within the orthographic projection boundary of the first sub-portion 21 on the display panel 10, and is spaced apart from the boundary of the display area A.

[0071] In this way, the cover plate 20 can shield the display panel 10 , reduce the risk of the display panel 10 being scratched, and increase the service life of the display panel 10 .

[0072] For example, Figure 2 As shown, the boundary of the orthographic projection of the cover plate 20 on the display panel 10 (the boundary of the orthographic projection of the first sub-portion 21 on the display panel 10) is substantially circular. Or, for example, as Figure 4 As shown in FIG. 1 , the boundary of the orthographic projection of the cover plate 20 on the display panel 10 is approximately a square. Alternatively, for example, as Figure 3 As shown, the boundary of the orthographic projection of the cover plate 20 on the display panel 10 is an irregular shape. The embodiments of the present disclosure are not listed one by one.

[0073] Exemplarily, the material of the cover plate 20 includes sapphire or glass.

[0074] In some embodiments, Figure 5 As shown, the distance between the boundary of the display area A and the boundary of the orthographic projection of the side wall of the second sub-portion 22 on the display panel 10 is 150 μm to 300 μm.

[0075] like Figure 5 As shown, the second sub-portion 22 includes a first surface, a second surface and a side wall between the first surface and the second surface. The first surface is a surface close to the display panel 10, and the second surface is a surface far from the display panel 10.

[0076] For example, the distance between the boundary of the display area A and the boundary of the orthographic projection of the sidewall of the second sub-portion 22 on the display panel 10 is 150nm, 153nm, 155nm, 160nm, 180nm, 200nm, 240nm, 270nm, 290nm or 300nm. The embodiments of the present disclosure are not listed one by one.

[0077] By configuring in this manner, the frame of the display module 100 can be made narrower, which is beneficial to achieving the purpose of a narrow frame of the display device 1000.

[0078] In some embodiments, Figure 5 As shown, the surface roughness of the sidewall of the second sub-portion 22 is less than or equal to 10 nm. For example, the surface roughness of the sidewall of the second sub-portion 22 is 10 nm, 8 nm, 7 nm, 5 nm, 4 nm or 1 nm, which are not listed one by one in the embodiments of the present disclosure.

[0079] In this way, the side wall of the second sub-section 22 is relatively smooth, that is, the side wall of the second sub-section 22 has better quality, which can improve the mechanical properties of the side wall of the second sub-section 22, thereby improving the mechanical properties of the display device 1000 (for example, anti-drop performance, anti-extrusion performance or waterproof performance).

[0080] In some embodiments, Figure 5 As shown, the first sub-portion 21 has a first area 201 and a second area 202 surrounding the first area 201. The orthographic projection of the first area 201 on the display panel 10 substantially coincides with the display area A.

[0081] In the related art, a portion of the light emitted from the display area of ​​the display panel will enter the second area, be reflected by the side wall of the second sub-unit, and then be emitted from the second area to the outside. Generally, when a user observes the display device, the distance between the human eye and the display device is 30cm to 40cm, that is, the distance between the human eye and the cover plate 20 is 30cm to 40cm. The distance from the human eye to the cover plate is much larger than the distance between the boundary of the positive projection of the side wall of the second sub-unit on the display panel and the boundary of the display area. Therefore, it can be considered that the light emitted from the second area to the human eye is roughly parallel. Therefore, when the user squints at the display device at a specific angle, such as 30° (the angle between the user's line of sight and the normal of the surface of the cover plate away from the display panel is 30°), the light can be transmitted from the second area to the human eye, causing the user to see the image displayed by the second sub-unit in the second area, and the display device has a "display ghost" problem.

[0082] In order to solve the above technical problems, Figure 6 As shown, the side wall of the second sub-portion 22 of the cover plate 20 provided in some embodiments of the present disclosure is provided with a concave-convex structure 221. The concave-convex structure 221 extends along the circumference of the second sub-portion 22 and surrounds at least part of the second sub-portion 22.

[0083] Arranged in this way, the concave-convex structure 221 can reflect at least part of the light transmitted to the human eye in the second area 202 to the first area 201, and emit it from the first area 201. Therefore, the cover plate 20 provided in some embodiments of the present disclosure can improve the problem of light being transmitted from the second area 202 to the human eye, and reduce the risk of the display device 1000 producing a "display ghost" problem caused by light being transmitted to the human eye.

[0084] The light transmitted to the human eye in the second area 202 includes incident light and reflected light. It should be noted that the incident light refers to the light emitted from the display area A into the second area 202 , and the reflected light refers to the light reflected by the side wall of the second sub-section 22 .

[0085] In some examples, the concave-convex structure 221 can reflect incident light in the second region 202 to the first region 201 and emit the light from the first region 201 .

[0086] In some other examples, the concave-convex structure 221 can reflect the reflected light in the second area 202 to the first area 201 and emit it from the first area 201 .

[0087] In some other examples, the concavo-convex structure 221 can reflect incident light in the second region 202 to the first region 201 and emit from the first region 201. The concavo-convex structure 221 can also reflect reflected light in the second region 202 to the first region 201 and emit from the first region 201.

[0088] In some embodiments, Figure 6 to Figure 12 As shown, the concavo-convex structure 221 includes at least one groove 2211 , and the at least one groove 2211 reflects at least part of the light transmitted to the human eye to the first area 201 , and emits the light from the first area 201 .

[0089] In some examples, such as Figure 6 to Figure 8 As shown, the concave-convex structure 221 includes a plurality of grooves 2211 arranged along the first direction X. For example, Figure 6 and Figure 7 As shown, a plurality of grooves 2211 are arranged at intervals. Or, for example, as Figure 8 As shown, the plurality of grooves 2211 are arranged continuously. Alternatively, by way of example, some of the grooves 2211 in the plurality of grooves 2211 are arranged at intervals, and some of the grooves 2211 are arranged continuously.

[0090] In other examples, such as Figures 9 to 12 As shown, the concave-convex structure 221 includes a groove 2211 .

[0091] In other embodiments, Fig.13As shown, the concavo-convex structure 221 includes at least one protrusion 2212 , and the at least one protrusion 2212 reflects at least part of the light transmitted to the human eye to the first area 201 , and emits the light from the first area 201 .

[0092] In some examples, the concavo-convex structure 221 includes a plurality of protrusions 2212 arranged along the first direction X. Exemplarily, the plurality of protrusions 2212 are arranged at intervals. Alternatively, exemplary, the plurality of protrusions 2212 are arranged continuously. Alternatively, exemplary, some of the plurality of protrusions 2212 are arranged at intervals, and some of the protrusions 2212 are arranged continuously.

[0093] In other examples, such as Fig.13 As shown, the concavo-convex structure 221 includes a protrusion 2212 .

[0094] In some other embodiments, the concave-convex structure 221 includes at least one protrusion 2212 and at least one groove 2211, and the at least one protrusion 2212 and at least one groove 2211 reflect at least part of the light transmitted to the human eye to the first area 201, and the light is emitted from the surface of the second sub-portion 22 located in the first area 201 away from the first sub-portion 21.

[0095] In some examples, the concave-convex structure 221 includes a plurality of concave grooves 2211 and a convexity 2212 .

[0096] In some other examples, the concave-convex structure 221 includes a plurality of concave grooves 2211 and a plurality of protrusions 2212 .

[0097] In some other examples, the concave-convex structure 221 includes a concave groove 2211 and a plurality of protrusions 2212 .

[0098] In some other examples, the concave-convex structure 221 includes a concave groove 2211 and a convex groove 2212 .

[0099] In some embodiments, Figure 6 As shown, the boundary line of the positive projection of the concave-convex structure 221 on the reference plane includes an arc. The reference plane is perpendicular to the cover plate 20 and perpendicular to the boundary of the second sub-section 22. It can be understood that when the boundary of the second sub-section 22 is a straight line, the reference plane is perpendicular to the straight line. When the boundary of the second sub-section 22 is an arc, the reference plane is perpendicular to the normal of the arc.

[0100] In other embodiments, Figure 7 As shown, the boundary line of the orthographic projection of the concavo-convex structure 221 on the reference surface includes a straight line.

[0101] In some other embodiments, the boundary line of the orthographic projection of the concave-convex structure 221 on the reference surface includes a straight line and an arc line.

[0102] In some embodiments, Figure 6 As shown, the angle between the light emitted from the display area A and the display panel 10 is 30° to 90°, that is, the light output angle of the display panel 10 is 30° to 150°.

[0103] For example, the light output angle of the display panel 10 is 30°, 35°, 45°, 50°, 58°, 62°, 70°, 75°, 79°, 80°, 82°, 85°, 89° or 90°. The embodiments of the present disclosure are not listed one by one.

[0104] Set it up in this way, such as Figure 6 As shown, the light transmitted to the human eye in the second area 202 will be reflected at the middle and upper part of the side wall of the second sub-section 22, that is, the side wall of the second sub-section 22 includes a reflective portion 222 and a non-reflective portion 223. Exemplarily, the interval between the end of the reflective portion 222 close to the first sub-section 21 and the first sub-section 21 is greater than or equal to half of the thickness of the second sub-section 22. For example, the interval between the end of the reflective portion 222 close to the first sub-section 21 and the first sub-section 21 is equal to half of the thickness of the second sub-section 22. Among them, the reflective portion 222 refers to the portion on the side wall of the second sub-section 22 that reflects the incident light, and the non-reflective portion 223 refers to the portion on the side wall of the second sub-section 22 that does not reflect the incident light.

[0105] like Figure 6 As shown, when the distance between the end of the reflecting portion 222 close to the first sub-portion 21 and the first sub-portion 21 is equal to half the thickness of the second sub-portion 22, the distance between the end of the concave-convex structure 221 away from the first sub-portion 21 and the first sub-portion 21 is greater than 1 / 2 of the thickness of the second sub-portion 22.

[0106] When configured in this manner, when the concave-convex structure 221 includes a groove 2211, no matter how deep the groove 2211 is, the groove 2211 can reflect at least part of the light transmitted to the human eye to the first area 201 and emit it from the first area 201, thereby reducing the risk of light being transmitted to the human eye and causing the display device 1000 to produce a "ghost display" problem.

[0107] When the concave-convex structure 221 includes the protrusion 2212, the light transmitted to the human eye can be projected onto the protrusion 2212, and the protrusion 2212 can reflect at least part of the light transmitted to the human eye to the first area 201 and emit it from the first area 201, thereby reducing the risk of the display device 1000 causing a "ghost display" problem due to light being transmitted to the human eye.

[0108] like Figure 6As shown, on the basis that the distance between the end of the concave-convex structure 221 away from the first sub-section 21 and the first sub-section 21 is greater than 1 / 2 of the thickness of the second sub-section 22, the distance between the end of the concave-convex structure 221 close to the first sub-section 21 and the first sub-section 21 is less than or equal to 1 / 2 of the thickness of the second sub-section 22.

[0109] Arranged in this way, the concave-convex structure 221 can reflect most of the light transmitted to the human eye to the first area 201 and emit it from the first area 201, which can reduce the risk of light transmitted to the human eye causing the display device 1000 to produce a "display ghost" problem.

[0110] In some embodiments, Figure 6 As shown, the edge of the surface of the second sub-portion 22 away from the first sub-portion 21 is provided with a chamfer 226 .

[0111] In this way, on the one hand, the chamfer 226 can remove burrs generated on the edge of the surface of the second sub-portion 22 away from the first sub-portion 21 .

[0112] On the other hand, the chamfer 226 can reflect the light at the upper part of the side wall of the second sub-section 22 to the first area 201 and emit it from the first area 201, which can reduce the risk of the light being transmitted to the human eye and causing the display device 1000 to have a "dark image" problem. For example, the ratio of the interval between the end of the upper part of the side wall of the second sub-section 22 close to the first sub-section 21 and the surface of the second sub-section 22 away from the first sub-section 21 to the thickness of the second sub-section 22 is 0.2. That is, the ratio of the interval between the end of the reflective portion 222 away from the first sub-section and the surface of the second sub-section 22 away from the first sub-section 21 to the thickness of the second sub-section 22 is 0.2.

[0113] In some embodiments, Figure 6 As shown, based on the fact that the edge of the surface of the second sub-section 22 away from the first sub-section 21 is provided with a chamfer 226, the distance between the end of the concave-convex structure 221 away from the first sub-section 21 and the surface of the second sub-section 22 away from the first sub-section 21 is 0.05 to 0.2 in ratio to the thickness of the second sub-section 22.

[0114] For example, the ratio of the distance between one end of the concave-convex structure 221 away from the first sub-portion 21 and the surface of the second sub-portion 22 away from the first sub-portion 21 to the thickness of the second sub-portion 22 is 0.05, 0.06, 0.07, 0.08, 0.09, 0.12, 0.14, 0.15, 0.17, 0.19 or 0.2, and the embodiments of the present disclosure are not listed one by one.

[0115] In this way, there is no concavo-convex structure 221 on the upper portion of the side wall of the second sub-portion 22 , which can improve the mechanical properties of the side wall of the second sub-portion 22 .

[0116] In the following, some embodiments of the present disclosure are schematically described by taking the concave-convex structure 221 including at least one groove 2211 as an example, but the embodiments of the present disclosure are not limited thereto, and any other concave-convex structure 221 may also be considered as long as the same technical concept is applied.

[0117] In some embodiments, Figure 6 As shown, the cover plate 20 includes an incident area 224 and a reflection area 225. The incident area 224 refers to the area formed by the incident light included in the light transmitted to the human eye. The reflection area 225 is the area formed by the reflected light included in the light transmitted to the human eye. The incident area 224 and the reflection area 225 have overlapping areas.

[0118] In some examples, such as Figure 6 As shown, the orthographic projection of at least one groove 2211 on the reference plane partially overlaps with the orthographic projection of the incident area 224 on the reference plane.

[0119] Arranged in this way, at least one groove 2211 can reflect at least part of the incident light to the first area 201 and emit it from the first area 201, thereby reducing the risk of light being transmitted to the human eye and causing the display device 1000 to produce a "display ghost" problem.

[0120] In other examples, such as Figure 6 As shown, the orthographic projection of at least one groove 2211 on the reference surface partially overlaps with the orthographic projection of the reflective area 225 on the reference surface.

[0121] Arranged in this way, at least one groove 2211 can reflect at least part of the reflected light to the first area 201 and emit it from the first area 201, thereby reducing the risk of light being transmitted to the human eye and causing the display device 1000 to produce a "display ghost" problem.

[0122] In some other examples, such as Figure 6 As shown, the orthographic projection of at least one groove 2211 on the reference surface partially overlaps with the orthographic projection of the incident area 224 on the reference surface, and partially overlaps with the orthographic projection of the reflection area 225 on the reference surface.

[0123] In this way, at least one groove 2211 can reflect at least part of the incident light to the first area 201 and emit it from the first area 201, and can also reflect at least part of the reflected light to the first area 201 and emit it from the first area 201. Thereby, the risk of light being transmitted to the human eye and causing the display device 1000 to produce a "dark image" problem can be reduced.

[0124] In some embodiments, Figure 6As shown, the ratio of the maximum depth of the groove 2211 to the distance between the boundary of the display area A and the boundary of the orthographic projection of the side wall of the second sub-portion 22 on the display panel 10 is 0.05-1.

[0125] For example, the ratio of the maximum depth of the groove 2211 to the distance between the boundary of the display area A and the boundary of the orthographic projection of the side wall of the second sub-portion 22 on the display panel 10 is 0.05, 0.1, 0.4, 0.7, 0.9 or 1, and the embodiments of the present disclosure are not listed one by one.

[0126] In this way, on the one hand, the groove 2211 can reflect most of the light transmitted to the human eye to the first area 201 and emit it from the first area 201. This can reduce the risk of the display device 1000 causing "dark images" due to light transmitted to the human eye.

[0127] On the other hand, the groove is only located in the second area 202 , and the groove will not affect the normal display of the display area A.

[0128] In some embodiments, when the concavo-convex structure 221 includes a plurality of grooves 2211 , the maximum depth of a groove 2211 may be smaller than the depths of two adjacent grooves 2211 .

[0129] By configuring in this manner, when a plurality of grooves 2211 are processed, the processing efficiency of the grooves 2211 can be improved.

[0130] In some embodiments, Fig.14 and Fig.15 As shown, in the case where the concavo-convex structure 221 includes a plurality of grooves 2211 continuously arranged along the first direction X, the shape of the boundary line of the orthographic projection of the plurality of grooves 2211 on the reference surface is wavy.

[0131] In some examples, such as Fig.14 As shown, the ratio of wavelength H to wave height W is greater than or equal to 10.

[0132] For example, the ratio of the wavelength H to the wave height W is 10, 12, 15, 18, 20 or 30, which are not listed one by one in the embodiments of the present disclosure.

[0133] For example, when the wave height W is 20 μm, the wavelength H may be 200 μm.

[0134] In other examples, such as Fig.15 As shown, the ratio of wavelength H to wave height W is 2 to 5.

[0135] For example, the ratio of the wavelength H to the wave height W is 2, 2.5, 3, 3.3, 4 or 5, which are not listed one by one in the embodiments of the present disclosure.

[0136] For example, when the wave height W is 20 μm, the wavelength H may be 60 μm to 80 μm.

[0137] For example, the wavelength H may be 60 μm, 62 μm, 65 μm, 68 μm, 70 μm, 74 μm, 78 μm, or 80 μm. The embodiments of the present disclosure are not listed one by one.

[0138] In some embodiments, as shown in FIG. Fig.12 As shown, the concave-convex structure 221 includes a groove 2211 .

[0139] In some examples, such as Fig. 9 As shown, the orthographic projection of the groove 2211 on the reference plane overlaps with the orthographic projection of the portion of the reflection area 225 that does not overlap with the incident area 224 on the reference plane. That is, the groove 2211 is located on the side of the reflection portion 222 away from the first sub-portion 21.

[0140] In other examples, such as Fig.10 As shown, the orthographic projection of the groove 2211 on the reference surface at least partially overlaps with the orthographic projection of the overlapping portion of the incident area 224 and the reflection area 225 on the reference surface. That is, the groove 2211 is only located on the reflection portion 222.

[0141] In this way, the maximum depth of the groove 2211 can be shallower, less material is removed from the second sub-portion 22 , and the mechanical strength of the second sub-portion 22 can be improved.

[0142] In some other examples, such as Fig.11 As shown, the orthographic projection of the groove 2211 on the reference plane overlaps with the orthographic projection of the portion of the incident area 224 that does not overlap with the reflective area 225 on the reference plane. That is, the groove 2211 is located on the side of the reflective portion 222 close to the first sub-portion 21 .

[0143] In some other examples, such as Fig.12 As shown, in the orthographic projection onto the reference plane, the groove 2211 overlaps with the portion of the reflection area 225 that does not overlap with the incident area 224, the portion of the incident area 224 and the reflection area 225 that overlap, and the portion of the incident area 224 that does not overlap with the reflection area 225. That is, the groove 2211 is located on both the reflection portion 222 and the non-reflection portion 223.

[0144] In some embodiments, Figure 6 As shown, the distance between the boundary of the display area A and the boundary of the orthographic projection of the side wall of the second sub-portion 22 on the display panel 10 is 200 μm, and the maximum depth of the groove 2211 may be 10 μm to 200 μm.

[0145] For example, the maximum depth of the groove 2211 may be 10 μm, 15 μm, 20 μm, 30 μm, 50 μm, 80 μm, 100 μm, 110 μm, 150 μm, 180 μm or 200 μm, which are not listed one by one in the embodiments of the present disclosure.

[0146] In some examples, during the process of manufacturing the display module 100 , there may be a fitting tolerance between the display panel 10 and the cover plate 20 (eg, a fitting tolerance of ±150 μm). The maximum depth of the groove 2211 may be 10 μm to 50 μm.

[0147] For example, the maximum depth of the groove 2211 may be 10 μm, 12 μm, 15 μm, 17 μm, 18 μm, 20 μm, 25 μm, 30 μm, 38 μm, 40 μm or 50 μm, which are not listed one by one in the embodiments of the present disclosure.

[0148] By configuring in this manner, the problem that the groove 2211 affects the normal display of the display area A due to reduced fitting tolerance can be improved.

[0149] In some examples, during the process of machining the groove 2211 , the groove 2211 has a sidewall profile tolerance (eg, a sidewall profile tolerance of ±25 μm). The maximum depth of the groove 2211 may be 10 μm to 175 μm.

[0150] For example, the maximum depth of the groove 2211 may be 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 100 μm, 150 μm, 170 μm or 175 μm, which are not listed one by one in the embodiments of the present disclosure.

[0151] By setting in this way, the problem that the groove 2211 affects the normal display of the display area A due to the tolerance of the side wall shape can be improved.

[0152] In some examples, the maximum depth of the groove 2211 may be 10 μm to 25 μm.

[0153] For example, the maximum depth of the groove 2211 may be 10 μm, 12 μm, 13 μm, 15 μm, 16 μm, 17 μm, 19 μm, 20 μm, 22 μm, 24 μm or 25 μm, which are not listed one by one in the embodiments of the present disclosure.

[0154] In this way, the problem of the groove 2211 being located in the first area 201 due to the fitting tolerance and the side wall shape tolerance can be improved, thereby reducing the risk of the groove 2211 affecting the normal display of the display area A.

[0155] In some embodiments, Fig.16 and Fig.17As shown, the display device 1000 further includes a middle frame 200 . The middle frame 200 is located on a side of the first sub-portion 21 of the cover plate 20 away from the display panel 10 , and extends along the circumference of the second sub-portion 22 of the cover plate 20 and surrounds the first sub-portion 21 .

[0156] In this way, when the display device 1000 collides with an external object, the middle frame 200 will collide with the external object first, thereby improving the problem of damage to the cover plate 20 caused by the collision between the display device 1000 and the external object.

[0157] like Fig.16 and Fig.17 As shown, the middle frame 200 wraps at least a portion of the concave-convex structure 221 of the second sub-portion 22 .

[0158] In this way, when the display device 1000 collides with an external object, the middle frame 200 will collide with the external object first, and the middle frame 200 can improve the problem of damage to the concave-convex structure 221 caused by the collision between the display device 1000 and the external object.

[0159] Two connection methods of the middle frame 200 and the cover plate 20 are introduced below.

[0160] In some embodiments, Fig.16 As shown, the shape of the orthographic projection of the side wall of the second sub-section 22 on the display panel 10 is roughly circular, the groove 2211 extends along the circumference of the second sub-section 22, and the two ends of the groove 2211 are the first end and the second end, and the second end is located on the side of the first end close to the first sub-section 21 to form a first thread 1. The side wall of the middle frame 200 close to the second sub-section 22 is provided with a second thread 2, and the first thread 1 and the second thread 2 are screwed together. Among them, "roughly circular" means that the shape is circular as a whole, but is not limited to a standard circle. That is, the "circle" here includes not only a basic circle, but also a shape similar to a circle.

[0161] Arranged in this way, the cover plate 20 and the middle frame 200 can be installed and removed more conveniently.

[0162] In some examples, such as Fig.16 As shown, the groove 2211 surrounds the second sub-portion 22 at least three times.

[0163] For example, the groove 2211 surrounds the second sub-portion 22 for three, four, four and a half, five or six cycles, which are not listed one by one in the embodiments of the present disclosure.

[0164] In this way, the first thread 1 and the second thread 2 are screwed together for a greater number of turns, so that the cover plate 20 and the middle frame 200 can be connected more firmly.

[0165] In some examples, such as Fig.16As shown, when the middle frame 200 and the cover plate 20 are connected by threads (the first thread 1 and the second thread 2 ), the middle frame 200 is also in contact with the first sub-portion 21 .

[0166] Arranged in this way, the first sub-section 21 supports the middle frame 200, which can improve the problem of the first thread 1 and the second thread 2 being squeezed against each other due to the gravity of the middle frame 200, and reduce the risk of the first thread 1 and the second thread 2 being squeezed against each other and causing the thread to wear faster.

[0167] In other embodiments, Fig.17 As shown, the middle frame 200 and the cover plate 20 enclose a receiving cavity 3. The display device 1000 further includes a bonding block 300, which is located in the receiving cavity 3, and the middle frame 200 and the cover plate 20 are bonded by the bonding block 300.

[0168] In this way, the groove 2211 will not be squeezed by the middle frame 200 , which can reduce the risk of the groove 2211 being damaged due to the squeeze between the groove 2211 and the middle frame 200 .

[0169] For example, Fig.17 As shown, the middle frame 200 includes a first extension portion 210 and a second extension portion 220. The first extension portion 210 extends along the first direction X and is spaced apart from the second sub-portion 22. The second extension portion 220 extends along the second direction Y and is spaced apart from the first sub-portion 21. One end of the second extension portion 220 away from the second sub-portion 22 is connected to one end of the second extension portion 220 away from the first sub-portion 21. The second direction Y intersects with the first direction X, for example, the second direction Y is perpendicular to the first direction X. The first extension portion 210, the second extension portion 220, the second sub-portion 22 and the first sub-portion 21 form a receiving cavity 3. The first extension portion 210 and the second sub-portion 22 are bonded by the bonding block 300, and the second extension portion 220 and the first sub-portion 21 are bonded by the bonding block 300.

[0170] In some embodiments, Fig.16 and Fig.17 As shown, the display module 100 further includes a light shielding layer 30, which is located between the display panel 10 and the cover plate 20 and surrounds the display area A. The orthographic projection of the light shielding layer 30 on the display panel 10 at least partially overlaps with the orthographic projection of the portion of the first sub-portion 21 that exceeds the second sub-portion 22 on the display panel 10.

[0171] For example, Fig.16 As shown, the orthographic projection of the light shielding layer 30 on the display panel 10 partially overlaps with the second sub-portion 22 .

[0172] like Fig.16 and Fig.17As shown, the display module 100 further includes a circular polarizer 40 , a back film 50 and a first adhesive layer 60 .

[0173] The circular polarizer 40 is located between the light shielding layer 30 and the display panel 10, the first adhesive layer 60 is located between the light shielding layer 30 and the circular polarizer 40, and the cover plate 20 and the circular polarizer 40 are bonded by the first adhesive layer 60. The back film 50 is located on the side of the display panel 10 away from the cover plate 20.

[0174] Some embodiments of the present disclosure also provide a method for preparing the cover plate 20, such as Fig.18 As shown, the method for preparing the cover plate 20 includes: S100 to S300.

[0175] S100 , providing an initial cover plate 110 .

[0176] The initial cover plate 110 includes a first initial second sub-portion 1101 and a first sub-portion 21 which are stacked. The second initial sub-portion and the first sub-portion 21 are stacked.

[0177] Exemplarily, the ratio of the thickness of the first initial second sub-portion 1101 to the thickness of the first sub-portion 21 is 3.

[0178] S200 , removing the edge portion of the first initial second sub-portion 1101 to form the second sub-portion 22 .

[0179] Illustratively, S200 includes S201 to S202.

[0180] S201 , removing part of the first initial second sub-portion 1101 to form a second initial second sub-portion 1102 .

[0181] The boundary of the second initial second sub-portion 1102 is within the boundary of the first sub-portion 21 and is spaced apart from the boundary of the first sub-portion 21 .

[0182] For example, a computer numerical control (CNC) machine tool may be used to process the first initial second sub-section 1101 to form the second initial second sub-section 1102. During this processing, the processing volume of the CNC machine tool may be relatively large, for example, the processing volume is 2 mm to 3 mm.

[0183] For example, the processing amount is 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.7 mm, 2.8 mm, 2.9 mm or 3 mm, which are not listed one by one in the embodiments of the present disclosure.

[0184] In this way, the processing speed of the CNC machine tool is faster, thereby reducing the preparation time of the cover plate 20.

[0185] S202 , removing part of the second initial second sub-portion 1102 to form the second sub-portion 22 , so as to form the cover plate 20 .

[0186] The boundary of the second sub-section 22 is within the boundary of the first sub-section 21 and is spaced from the boundary of the second sub-section 22. The sidewall of the second sub-section 22 is provided with a concave-convex structure 221, which extends along the circumference of the second sub-section 22 and surrounds at least part of the second sub-section 22.

[0187] For example, a computer numerical control machine tool may be used to process the second initial second sub-portion 1102 to form the second sub-portion 22. During this processing, the processing volume of the computer numerical control machine tool may be relatively small, for example, the processing volume is less than 1 mm.

[0188] For example, the processing amount is 100 μm, 150 μm, 300 μm, 500 μm, 700 μm, 800 μm, 850 μm, 950 μm or 1 mm, which are not listed one by one in the embodiments of the present disclosure.

[0189] Arranged in this way, the CNC machine tool can process at a slower speed, thereby improving the surface quality of the concave-convex structure.

[0190] S300 , polishing the side wall of the second sub-portion 22 and the surface of the concavo-convex structure 221 .

[0191] For example, a polishing machine may be used to polish the sidewall of the second sub-portion 22 and the surface of the concavo-convex structure 221 , so that the surface roughness of the sidewall of the second sub-portion 22 is less than 10 nm.

[0192] In this way, the side wall of the second sub-portion 22 can be made smoother, that is, the side wall of the second sub-portion 22 has better quality, thereby improving the mechanical properties of the side wall of the second sub-portion 22 and thus improving the mechanical properties of the display device 1000 .

[0193] S400, coating, silk-screening, cleaning, and testing the cover plate 20.

[0194] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0195] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be thought of by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display module, characterized in that: include: A display panel having a display area; a cover plate, located at a display side of the display panel, the cover plate comprising a first sub-portion and a second sub-portion; an orthographic projection of the first sub-portion on the display panel covers the display area, and a boundary of the orthographic projection is spaced from a boundary of the display area; the second sub-portion is located at a side of the first sub-portion away from the display panel, and a boundary of the orthographic projection of the second sub-portion on the display panel is located within a boundary of the orthographic projection of the first sub-portion on the display panel, and is spaced from a boundary of the display area; Wherein, a side wall of the second sub-section is provided with a concave-convex structure, and the concave-convex structure extends along the circumference of the second sub-section and surrounds at least a part of the second sub-section.

2. The display module according to claim 1, characterized in that: The surface roughness of the side wall of the second sub-portion is less than or equal to 10 nm.

3. The display module according to claim 1 or 2, characterized in that: The concave-convex structure includes a plurality of grooves arranged along a first direction, and the plurality of grooves are arranged continuously and / or at intervals; wherein the first direction is perpendicular to the cover plate.

4. The display module according to claim 3, characterized in that: The maximum depth of the groove is greater than the distance between two adjacent grooves.

5. The display module according to claim 1 or 2, characterized in that: The concave-convex structure includes a concave groove and / or a convex protrusion.

6. The display module according to claim 1 or 2, characterized in that: A distance between an end of the concavo-convex structure away from the first sub-portion and the first sub-portion is greater than 1 / 2 of a thickness of the second sub-portion.

7. The display module according to claim 6, characterized in that: A distance between an end of the concavo-convex structure close to the first sub-portion and the first sub-portion is less than or equal to 1 / 2 of a thickness of the second sub-portion.

8. The display module according to claim 1 or 2, characterized in that: The edge of the surface of the second sub-section away from the first sub-section is chamfered; the ratio of the distance between the end of the concave-convex structure away from the first sub-section and the surface of the second sub-section away from the first sub-section to the thickness of the second sub-section is 0.05-0.

2.

9. The display module according to claim 1 or 2, characterized in that: The orthographic projection of the side wall of the second sub-portion on the display panel is substantially circular.

10. The display module according to claim 9, characterized in that: The concave-convex structure includes a groove, which extends along the circumference of the second sub-section, with two ends of the extension being a first end and a second end, and the second end is located on a side of the first end close to the first sub-section to form a first thread.

11. The display module according to claim 10, characterized in that: The groove surrounds the second sub-portion at least three times.

12. The display module according to claim 1 or 2, characterized in that: The boundary line of the orthographic projection of the concavo-convex structure on the reference surface includes an arc line and a straight line; wherein the reference surface is perpendicular to the cover plate and perpendicular to the boundary of the second sub-section.

13. The display module according to claim 1 or 2, characterized in that: The concavo-convex structure of the second sub-portion in the cover plate includes a groove, and the ratio of the maximum depth of the groove to the distance between the boundary of the display area in the display panel and the boundary of the orthographic projection of the side wall of the second sub-portion on the display panel is 0.05-1.

14. The display module according to claim 1 or 2, characterized in that: A distance between a boundary of a display area in the display panel and a boundary of an orthographic projection of a side wall of the second sub-portion on the display panel is 150 μm to 300 μm.

15. A display device, characterized in that: include: The display module according to any one of claims 1 to 14; The middle frame is located on the side of the first sub-section of the cover plate away from the display panel. The middle frame extends along the circumference of the second sub-section of the cover plate and surrounds the first sub-section. The middle frame wraps at least part of the concave-convex structure of the second sub-section.

16. The display device according to claim 15, characterized in that: The second end is located on a side of the first end close to the first sub-section to form a first thread. A second thread is provided on a side wall of the middle frame close to the second sub-section. The first thread and the second thread are screwed together.

17. The display device according to claim 15, characterized in that: The middle frame and the cover plate form the accommodating cavity; the display device further comprises a bonding block, the bonding block is located in the accommodating cavity, and the middle frame and the cover plate are bonded by the bonding block.

18. The display device according to any one of claims 15 to 17, characterized in that: The display module also includes: A shading layer is located between the display panel and the cover plate and surrounds the display area of ​​the display panel; an orthographic projection of the shading layer on the display panel at least partially overlaps with an orthographic projection of a portion of the first sub-portion that exceeds the second sub-portion on the display panel.

19. The display device according to claim 18, characterized in that The orthographic projection of the light shielding layer on the display panel partially overlaps with the second sub-portion.

Images