Display module and display device

Abstract

This application relates to a display module and a display device. The display module includes a display panel, which includes a display area and a non-display area arranged along a first direction. The non-display area includes a bent area and a bonding area located on the side of the bent area away from the display area. The bonding area is formed on the backlight side of the display area through the bent area. The bent area includes at least one straight segment and multiple bent segments. Each pair of adjacent bent segments is connected by a straight segment. The bent area is provided with multiple traces for connecting the display area and the bonding area. Each bent segment is provided with multiple openings. The multiple openings and multiple traces are alternately arranged in a second direction, where the first direction intersects the second direction. In this application, the multiple bent segments form creases and are connected by straight segments, causing the bent area to form a shape that retracts towards the display area, thereby facilitating the realization of a narrow bezel display.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0002] With the development of technology, display devices have also advanced, and people's demands for them have become increasingly higher. In recent years, the design of display devices has seen a trend towards narrow bezels. The purpose of narrow bezels is to increase the area of ​​the displayable surface within the device, thereby improving the user's visual experience. Therefore, full-screen displays, high screen-to-body ratios, and narrow bezels have become the main development directions for display devices.

[0003] Pad bending is a core technology for full-screen, borderless display products. Pad bending refers to bending the bonding area of ​​the display panel to the back of the display area, thereby achieving a narrow bezel display. However, the bezel size of the display device in related technologies is still quite large. Summary of the Invention

[0004] Therefore, it is necessary to provide a display module and display device to reduce the bezel size of the display device and achieve the requirement of narrow bezel display.

[0005] An embodiment of the first aspect of this application provides a display module. The display module includes a display panel, which includes a display area and a non-display area arranged along a first direction. The non-display area includes a bent area and a bonding area located on the side of the bent area opposite to the display area. The bonding area is formed on the backlight side of the display area through the bent area. The bent area includes at least one straight segment and multiple bent segments. Each pair of adjacent bent segments is connected by one straight segment. The bent area is provided with multiple traces for connecting the display area and the bonding area. Each bent segment is provided with multiple openings. The multiple openings and the multiple traces are alternately arranged in a second direction, where the first direction intersects the second direction.

[0006] In this application, the display module includes a display panel. The bending area of ​​the display panel includes at least one straight segment and multiple bending segments. Each bending segment has multiple openings, thereby reducing the bending stress of each bending segment compared to other parts of the bending area, making it easier to bend. When the bending area bends, the multiple bending segments form creases and connect with the straight segment, causing the bending area to form a shape that retracts towards the display area. Compared to the arc with radius R in related technologies, the bending area in this application occupies a narrower non-display area after bending, which is beneficial for achieving narrow bezel displays and improving the full-screen display effect.

[0007] In some embodiments, there are two bending segments. This facilitates narrow bezel display and improves the full-screen display effect.

[0008] Preferably, the two bending segments have the same bending radius, and the straight segment between the two bending segments is parallel to the thickness direction of the display module. This configuration minimizes the size of the non-display area occupied by the bending region after bending, thereby further improving the full-screen display effect.

[0009] In some embodiments, there are three bending segments. Firstly, the non-display area occupied in the first direction after bending is smaller, which is beneficial for achieving narrow bezel display and improving the full-screen display effect. Secondly, although the non-display area occupied in the first direction after bending in this embodiment is larger than that in the aforementioned embodiment with two bending segments, the addition of a crease increases the bending angle of each crease, thereby reducing the probability of wiring breakage during bending and thus improving the lifespan of the display module.

[0010] Preferably, in the thickness direction of the display module, the distance from the middle bending segment to the remaining two bending segments is equal. This arrangement helps reduce the manufacturing cost of the three bending segments and improves the ease of bending.

[0011] In some embodiments, there are four bending segments. Firstly, the non-display area occupied in the first direction after bending is smaller, which is beneficial for achieving narrow bezel display and improving the full-screen display effect. Secondly, although the non-display area occupied in the first direction after bending in this embodiment is larger than that in the aforementioned embodiment with two bending segments, the addition of two creases increases the bending angle of each crease, thereby reducing the probability of wiring breakage during bending and thus improving the lifespan of the display module.

[0012] In some embodiments, when the bending area of ​​the display panel is not bent, the longitudinal cross-sectional shape of the opening is trapezoidal, and the length of the side of the trapezoid located on the light-emitting side of the display panel is greater than the length of the side located on the backlight side of the display panel. By setting the opening with a trapezoidal longitudinal cross-sectional shape, it is beneficial to further reduce the bending stress when bending multiple bending segments while ensuring the strength of the display module.

[0013] In some embodiments, when the bending area of ​​the display panel is not bent, the shape of the orthographic projection of the plurality of openings on the display panel includes at least one of square or circle.

[0014] In some embodiments, the display module further includes a back film disposed on the backlight side of the display panel. The back film includes a first sub-back film located in the display area and a second sub-back film located in the bonding area. By providing the back film, protection of the backlight side of the display panel can be achieved, thereby improving the lifespan and reliability of the display panel. Furthermore, the back film is divided into two parts at the bending area, which helps to further reduce the bending stress in the bending area and further reduce the bezel of the display panel, achieving the requirement of a narrow bezel.

[0015] In some embodiments, the display module further includes a support layer disposed between the first sub-back film and the second sub-back film. This improves both the mechanical strength and heat dissipation of the display panel.

[0016] In some embodiments, the display module further includes a cover plate disposed on the light-emitting side of the display panel, the cover plate's orthographic projection on the display panel covering the display area and the bending area. By providing the cover plate, the display panel is protected.

[0017] The second aspect of this application provides a display device including the display module described in the first aspect, which facilitates narrow bezel display and improves the full-screen display effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the bending structure of the display panel in a display module in related technologies;

[0019] Figure 2 This is a schematic diagram of the display panel of the display module in an embodiment of this application, without bending.

[0020] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the display panel of the display module after bending.

[0021] Figure 4 This is a schematic diagram of another structure of the display module of the present application where the display panel is not bent;

[0022] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the display panel of the display module after bending.

[0023] Figure 6 This is a schematic diagram of another structure of the display module of the present application where the display panel is not bent;

[0024] Figure 7 for Figure 6 The diagram shows a cross-sectional view of the display panel of the display module after bending.

[0025] Figure 8 for Figure 2 A schematic diagram of the cross-section cut along line AA. Detailed Implementation

[0026] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more light-emitting units present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more light-emitting units present.

[0029] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0030] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0031] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0032] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0033] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0034] Pad bending is a core technology for full-screen borderless display products. Pad bending refers to bending the bonding area of ​​the display panel to the back of the display panel, thereby achieving a narrow bezel display.

[0035] like Figure 1 The diagram illustrates a structure in a display module 1 where the bonding area of ​​the display panel is bent to the back of the display panel. The display module 1 includes a display panel 2, which includes a display area 3 and a non-display area 4. The non-display area 4 includes a bending area 5 and a bonding area 6. The bonding area 6 is bent to the non-display side of the display area 3 via the bending area 5. At this point, the bending area 5 forms an arc with a radius of R. The bending area 5 is part of the non-display area 4 of the display panel 2 and cannot display an image. Furthermore, the inventors have discovered through long-term research that, limited by factors such as materials, film stress, and trace breakage during bending, the bending radius R of the bending area 5 has a limit and cannot be continuously reduced. Therefore, the bending area 5 still occupies a certain bezel area of ​​the display device, thus restricting the development of narrow bezel displays.

[0036] To address the aforementioned issues, this application proposes a display module and display device to facilitate the fulfillment of the requirement for narrow bezel display in display devices.

[0037] like Figure 2 and Figure 3 As shown, an embodiment of the first aspect of this application provides a display module 10. The display module 10 includes a display panel 100, which includes a display area 101 and a non-display area 101a arranged along a first direction. The non-display area 101a includes a bent area 102 and a bonding area 103 located on the side of the bent area 102 opposite to the display area 101. The bonding area 103 is disposed on the backlight side of the display area 101 through the bent area 102. The bent area 102 includes at least one straight segment 102b and a plurality of bent segments 102a. Every two adjacent bent segments 102a are connected by a straight segment 102b. The bent area 102 is provided with a plurality of traces 1021 for connecting the display area 101 and the bonding area 103. Each bent segment 102a is provided with a plurality of openings 105. The plurality of openings 105 and the plurality of traces 1021 are alternately arranged in a second direction, and the first direction and the second direction intersect.

[0038] In this application, the second direction intersects with the first direction. For example... Figure 2 As shown, the first direction can be the length direction of the display panel 100 when it is not bent, and the second direction can be the width direction of the display panel 100 when it is not bent. The first direction is defined as the X direction, and the second direction as the Y direction. The following embodiments will be described.

[0039] The display panel 100 includes a display area 101 and a non-display area 101a. The display area 101 typically includes a driving circuit layer located on a flexible substrate. The display area 101 is used for image display. The display area 101 typically also includes multiple color light-emitting units electrically connected to the driving circuit layer, which drives the light-emitting units to emit light. The light-emitting units may include OLED devices, Micro LED devices, Mini LED devices, QLED (Quantum Dots Light Emitting Diode) devices, inorganic light-emitting display devices, etc., and this application is not limited thereto. In some embodiments, the display panel 100 also includes an encapsulation layer located on the side of the driving circuit layer opposite to the flexible substrate. The encapsulation layer can reduce the probability of external water and oxygen corrosion of the display devices inside the display panel 100, thereby improving the lifespan of the display panel 100.

[0040] The non-display area 101a refers to the area not used for displaying images. The non-display area 101a includes a bending area 102 and a bonding area 103. Because the display panel 100 has a bending area 102, the display panel 100 can use a flexible substrate, making it a flexible display panel. The flexible substrate material can be a polymer material such as polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyaryl compounds (PAR), or glass fiber reinforced plastic (FRP). Preferably, the flexible substrate material can be polyimide (PI). Polyimide is an excellent flexible material, enabling the bending area 102 to be freely bent at a certain angle.

[0041] The bending area 102 is the area where the display panel 100 is bent. Multiple traces 1021 electrically connected to the driving circuit layer of the display area 101 are provided in the bending area 102. These traces 1021 can be, for example, data lines. The bonding area 103 refers to the area electrically connected to the external driving chip 170. The bonding area 103 is formed on the non-display side of the display area 101 through the bending area 102. The non-display side of the display area 101 refers to the backlight side of the display area 101, that is, the side of the flexible substrate in the display area 101 of the display panel 100 that faces away from the driving circuit layer. Typically, multiple pads are provided in the bonding area 103. The driving chip 170 is electrically connected to the bonding area 103 through these pads. Furthermore, multiple traces 1021 electrically connect the bonding area 103 and the display area 101. In this way, the driving chip 170 can transmit driving signals to the display area 101, thereby enabling the display of the image on the display area 101.

[0042] Typically, the non-display area 101a also includes a fan-out area 104 located between the bending area 102 and the display area 101. By setting the fan-out area 104, it is convenient to realize the electrical connection and wiring arrangement between the display area 101 and the bending area 102.

[0043] In this application, such as Figure 2 and Figure 3 As shown, the bending region 102 includes at least one straight segment 102b and multiple bending segments 102a, with each pair of adjacent bending segments 102a connected by a straight segment 102b. It is easy to understand that at least one straight segment 102b means that when there are two bending segments 102a, there is one straight segment 102b; when there are two or more bending segments 102a, there are also two or more straight segments 102b.

[0044] Each bending segment 102a has multiple openings 105, which are arranged alternately with multiple traces 1021 in the Y direction. Because the bending segment 102a has multiple openings 105, when the bending area 102 bends, the bending stress of the multiple bending segments 102a is much less than the bending stress in other areas of the bending area 102. Thus, the multiple bending segments 102a become multiple "creases" in the bending area 102.

[0045] In other words, in the relevant technology, the bending stress distribution in the entire bending zone 102 is uniform, thus forming an overall shape after bending as shown in the figure. Figure 1 The example shown is an arc with radius R. In this application, the bending region 102 includes at least one straight segment 102b and multiple bent segments 102a. Each bent segment 102a has multiple openings 105, thereby making the bending stress of each bent segment 102a smaller than other locations in the bending region 102, making it easier to bend. Figure 3As shown, when the bending area 102 bends, multiple bending segments 102a become creases, causing the bending area 102 to form a shape that retracts towards the display area 101. Compared to an arc with radius R, the non-display area occupied by the bending area 102 of this application is narrower after bending, which is beneficial for achieving narrow bezel display and improving the full-screen display effect.

[0046] It is easy to understand that each opening 105 may pass through only a few film layers inside the display panel 100, or the opening 105 may penetrate the display panel 100. This application does not limit this.

[0047] In some embodiments, such as Figure 3 As shown, there are two bent segments 102a, and one straight segment 102b. Figure 2 As shown, for ease of distinction, the two bends 102a are defined as the first bend 1022 and the second bend 1023. The multiple openings 105 of the first bend 1022 are defined as multiple first openings 1022a, and the multiple openings 105 of the second bend 1023 are defined as multiple second openings 1023a.

[0048] In this embodiment, the first bending segment 1022 is provided with a plurality of first openings 1022a. Therefore, when the bending area 102 is bent, the bending stress of the first bending segment 1022 is much smaller than the bending stress of other areas of the bending area 102 excluding the second bending segment 1023. The first bending segment 1022 becomes the first "crease" in the bending area 102.

[0049] The second bending segment 1023 has multiple second openings 1023a. Therefore, when the bending area 102 bends, the bending stress of the second bending segment 1023 is much smaller than the bending stress of other areas of the bending area 102 excluding the first bending segment 1022. The second bending segment 1023 becomes a new second "crease" in the bending area 102.

[0050] This results in the bending area 102 forming a shape that retracts towards the display area 101 after bending. Compared to an arc with radius R, the non-display area occupied by the bending area 102 in this embodiment is narrower after bending, which is beneficial for achieving narrow bezel display and improving the full-screen display effect. Preferably, as... Figure 3 As shown, the two bent segments 102a have the same bending radius, and the straight segment 102b located between the two bent segments 102a is parallel to the thickness direction of the display module 100. This configuration minimizes the size of the non-display area occupied by the bent area 102 after bending, thus further enhancing the full-screen display effect.

[0051] In some embodiments, such as Figure 5 As shown, there are three bent segments 102a, therefore there are two straight segments 102b. Figure 4As shown, for ease of distinction, the three bends 102a are defined as the first bend 1022, the second bend 1023, and the third bend 1024. The multiple openings 105 of the first bend 1022 are defined as multiple first openings 1022a, the multiple openings 105 of the second bend 1023 are defined as multiple second openings 1023a, and the multiple openings 105 of the third bend 1024 are defined as multiple third openings 1024a.

[0052] In this embodiment, the bending region 102 includes three bending segments 102a. Since the first bending segment 1022 has multiple first openings 1022a, the second bending segment 1023 has multiple second openings 1023a, and the third bending segment 1024 has multiple third openings 1024a, when the bending region 102 is bent, the bending stress of the first bending segment 1022, the second bending segment 1023, and the third bending segment 1024 is much less than the bending stress in other areas of the bending region 102. These three locations become the three "creases" of the bending region 102.

[0053] like Figure 5 As shown, when the bending area 102 bends, the first bending segment 1022, the second bending segment 1023, and the third bending segment 1024 become creases, causing the bending area 102 to form a shape that retracts towards the display area 101. Firstly, compared to an arc with radius R, the non-display area occupied by the bending area 102 in the X direction after bending is smaller, which is beneficial for achieving narrow bezel display and improving the full-screen display effect. Secondly, although the non-display area occupied by the bending area 102 in the X direction after bending in this embodiment is larger than that in the aforementioned embodiment with two bending segments, the addition of a crease increases the bending angle of each crease, thereby reducing the probability of the trace 1021 breaking during bending and thus improving the lifespan of the display module 10. Therefore, this embodiment is beneficial for improving the lifespan of the display module 10 while ensuring the narrow bezel display requirement.

[0054] It is easy to understand that the position of the third bend segment 1024 can be flexibly set. For example, the third bend segment 1024 can be set closer to the first bend segment 1022 than the second bend segment 1023; or, the third bend segment 1024 can be set closer to the second bend segment 1023 than the first bend segment 1022.

[0055] Alternatively, preferably, in the thickness direction of the display module 10, the distances from the middle bending segment 102a to the remaining two bending segments 102a are equal, that is, as shown in the figure. Figure 5As shown, in the thickness direction of the display module 10, the third bend 1024 is located between the first bend 1022 and the second bend 1023. This arrangement helps to reduce the manufacturing cost of the three bend segments 102a and improve the ease of bending.

[0056] Furthermore, in some embodiments, the bending region 102 includes a trace 1021 located on a flexible substrate, an insulating layer covering the trace 1021, and an adhesive layer disposed on the side of the insulating layer opposite to the trace 1021. By providing the adhesive layer, the trace 1021 can be supported when the bending region 102 is bent, thereby further reducing the probability of the trace 1021 breaking due to bending.

[0057] In some embodiments, such as Figure 6 and Figure 7 As shown, the bending region 102 includes four bending segments 102a. Therefore, there are three straight segments 102b. Figure 6 As shown, for ease of distinction, the four bends 102a are defined as the first bend 1022, the second bend 1023, the third bend 1024, and the fourth bend 1025. The multiple openings 105 of the first bend 1022 are defined as multiple first openings 1022a, the multiple openings 105 of the second bend 1023 are defined as multiple second openings 1023a, the multiple openings 105 of the third bend 1024 are defined as multiple third openings 1024a, and the multiple openings 105 of the fourth bend 1025 are defined as multiple fourth openings 1025a.

[0058] Because the first bending segment 1022 has multiple first openings 1022a, the second bending segment 1023 has multiple second openings 1023a, the third bending segment 1024 has multiple third openings 1024a, and the fourth bending segment 1025 has multiple fourth openings 1025a, when the bending region 102 is bent, the bending stress of the first bending segment 1022, the second bending segment 1023, the third bending segment 1024, and the fourth bending segment 1025 is much less than the bending stress in other areas of the bending region 102. These four locations become the four "creases" of the bending region 102.

[0059] like Figure 6 and Figure 7As shown, when the bending area 102 bends, the four bending segments 102a become creases, causing the bending area 102 to form a shape that retracts towards the display area 101. Firstly, compared to an arc with radius R, the non-display area occupied by the bending area 102 in the X direction after bending is smaller, which is beneficial for achieving narrow bezel display and improving the full-screen display effect. Secondly, although the non-display area occupied by the bending area 102 in the X direction after bending in this embodiment is larger than that of the aforementioned embodiment with two bending segments, the addition of two creases increases the bending angle of each crease, thereby reducing the probability of the trace 1021 breaking during bending and thus improving the lifespan of the display module 10. Therefore, this embodiment is beneficial for further improving the lifespan of the display module 10 while ensuring the narrow bezel display requirement.

[0060] In some embodiments, such as Figure 2 and Figure 8 As shown, when the bending area 102 of the display panel 100 is not bent, the longitudinal section shape of the opening 105 is trapezoidal. Among the two parallel sides of the trapezoid, the length of the side located on the light-emitting side of the display panel 100 is greater than the length of the side located on the backlight side of the display panel 100.

[0061] In this embodiment, the light-emitting side of the display panel 100 refers to the side where the image is displayed, that is, the side of the driving circuit layer in the display area 101 that faces away from the flexible substrate. The backlight side refers to the back of the display panel 100, that is, the side of the flexible substrate in the display area 101 that faces away from the driving circuit layer. The cross-sectional shape of the opening 105 is trapezoidal, and among the two parallel sides of the trapezoid, the length of the side on the light-emitting side is greater than the length of the side on the backlight side. That is, the opening size of the opening 105 on the light-emitting side is larger than the opening size on the backlight side. Since the bending area 102 bends towards the back of the display area 101, the bending radius of the light-emitting side of the display panel 100 is greater than the bending radius of the backlight side, the film layer on the light-emitting side is stretched, and the film layer on the backlight side is compressed. At this time, when the display panel 100 is not bent, the opening size of the opening 105 on the light-emitting side is set to be larger, so that large-angle bending of the light-emitting side film layer can be achieved without worrying about the effect of tensile stress on the light-emitting side film layer; the opening size of the opening 105 on the backlight side is set to be smaller, so that compression bending of the backlight side film layer can be achieved while ensuring the strength of the backlight side film layer. Therefore, by setting the opening 105 with a trapezoidal cross-sectional shape, it is beneficial to further reduce the bending stress when bending multiple bending segments 102 while ensuring the strength of the display module 10.

[0062] In some embodiments, such as Figure 2As shown, when the bending area 102 of the display panel 100 is not bent, the orthographic projection shape of the plurality of openings 105 on the display panel 100 includes at least one of square or circle. This embodiment proposes the shape of the orthographic projection of the openings 105 on the display panel 100 when the display panel 100 is not bent. The shape of the orthographic projection of the plurality of openings 105 on the display panel 100 including at least one of square or circle means that the shape of the orthographic projection of the plurality of openings 105 on the display panel 100 can all be square, or all be circular, or some can be square and some can be circular. The above two shapes are relatively common, which helps to reduce the difficulty of manufacturing the openings 105 and reduce production costs. It is easy to understand that this does not mean that the shape of the orthographic projection of the openings 105 on the display panel 100 is limited to the above two. For example, it can also be a triangle, a polygon, etc., and this application does not limit this. Figure 2 As shown, the orthographic projection of the multiple openings 105 onto the display panel 100 is square in shape.

[0063] Furthermore, when there are multiple bending segments 102, before the display panel 100 is bent, the shape of the opening 105 of each bending segment 102 in the orthographic projection of the display panel 100 can be the same or not entirely the same, and this application does not impose any restrictions on this.

[0064] Furthermore, when the longitudinal cross-sectional shape of the opening 105 is trapezoidal and the shape of its orthographic projection on the display panel 100 is circular, the opening 105 is a frustum of a cone; when the cross-sectional shape of the opening 105 is trapezoidal and the shape of its orthographic projection on the display panel 100 is square, the opening 105 is a frustum of a square.

[0065] In this application, multiple openings 105 and multiple traces 1021 are arranged alternately in the second direction, that is, an opening 105 is provided between every two adjacent traces 1021. It is easy to understand that the number of openings 105 between every two adjacent traces 1021 can also be two or more, and this application does not limit this.

[0066] In some embodiments, such as Figure 3 As shown, the display module 10 also includes a back film 110, which is disposed on the back of the display panel 100. By providing the back film 110, the backlight side of the display panel 100 can be protected, thereby improving the lifespan and reliability of the display panel 100.

[0067] Furthermore, the back film 110 includes a first sub-back film 111 located in the display area 101 and a second sub-back film 112 located in the bonding area 103. In this embodiment, the back film 110 includes two parts, one part located on the back of the display area 101 and the other part located on the back of the bonding area 103. That is, the back film 110 is divided into two parts at the bending area 102. In this way, the back film 110 itself does not need to participate in the bending, which helps to further reduce the bending stress in the bending area 102 and further reduce the bezel of the display panel 100, thus achieving the requirement of a narrow bezel.

[0068] In some embodiments, such as Figure 3 As shown, the display module 10 also includes a support layer 120 disposed between the first sub-back film 111 and the second sub-back film 112. By providing the support layer 120, the mechanical strength of the display panel 100 is improved, and the heat dissipation effect of the display panel 100 is also improved.

[0069] Furthermore, the display module 10 also includes a shim 130 disposed between the support layer 120 and the second sub-back film 112. The shim 130 and the support layer 120 can be stacked between the first sub-back film 111 and the second sub-back film 112. In this embodiment, by adjusting the height of the shim 130, the bending dimension of the bending area 102 in the thickness direction of the display panel 100 can be adjusted.

[0070] Furthermore, the first sub-back membrane 111 is bonded to one side surface of the support layer 120 through the first adhesive layer 150, which helps to improve the structural stability of the support layer 120, the shim block 130, the first sub-back membrane 111 and the second sub-back membrane 112.

[0071] In some embodiments, the display module 10 further includes a cover plate 200. The cover plate 200 is disposed on the light-emitting side of the display panel 100, and its orthographic projection on the display panel 100 covers the display area 101 and the bending area 102. By providing the cover plate 200, the display panel 100 is protected. Further, the cover plate 200 can be a glass cover plate.

[0072] In some embodiments, the display module 10 further includes a polarizer 300 disposed between the cover plate 200 and the display panel 100. By providing the polarizer 300, the polarization state of light can be changed, thereby reducing the impact of ambient light on the display image and improving the display effect.

[0073] Furthermore, the display module 10 also includes a second adhesive layer 151 for bonding the polarizer 300 to the cover plate 200. The materials of the first adhesive layer 150 and the second adhesive layer 151 may include optical adhesive, pressure-sensitive adhesive, etc., and this application does not limit them.

[0074] A second aspect of this application provides a display device including the display module 10 described in the first aspect. The display device of this application uses the display module 10 of the first aspect. The display module 10 includes a display panel 100, and a bending area 102 of the display panel 100 includes at least one straight segment 102b and multiple bending segments 102a. Each bending segment 102a is provided with multiple openings 105, thereby making the bending stress of each bending segment 102a smaller than other locations in the bending area 102, making it easier to bend. When the bending area 102 is bent, the multiple bending segments 102a form creases, causing the bending area 102 to form a shape that retracts towards the display area 101. Compared to an arc with radius R, the bending area 102 of this application occupies a narrower non-display area after bending, which is beneficial for achieving narrow bezel display and improving the full-screen display effect.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display module, comprising a display panel, the display panel comprising display areas arranged along a first direction and a non-display area, the non-display area comprising a bending area and a bonding area located on a side of the bending area away from the display areas, the bonding area being formed on a backlight side of the display areas through the bending area, characterized in that, The bending area includes at least one straight segment and multiple bending segments. Each pair of adjacent bending segments is connected by one straight segment. The bending area is provided with multiple traces for connecting the display area and the bonding area. Each bending segment is provided with multiple openings. The multiple openings and multiple traces are arranged alternately in a second direction. The first direction intersects the second direction. There are three bending segments; in the thickness direction of the display module, the distance from the middle bending segment to the remaining two bending segments is equal.

2. The display module of claim 1, wherein, When the bending area of ​​the display panel is not bent, the longitudinal cross-sectional shape of the opening is trapezoidal. Among the two parallel sides of the trapezoid, the length of the side located on the light-emitting side of the display panel is greater than the length of the side located on the backlight side of the display panel.

3. The display module of claim 1, wherein, When the bending area of ​​the display panel is not bent, the shape of the orthographic projection of the plurality of openings on the display panel includes at least one of square or circle.

4. The display module of claim 1, wherein, The display module also includes a back film disposed on the backlight side of the display panel, the back film including a first sub-back film located in the display area and a second sub-back film located in the bonding area.

5. The display module of claim 4, wherein, The display module also includes a support layer disposed between the first sub-back film and the second sub-back film.

6. The display module of claim 1, wherein, The display module also includes a cover plate, which is disposed on the light-emitting side of the display panel. The orthographic projection of the cover plate on the display panel covers the display area and the bending area.

7. A display device, characterized by comprising: Includes the display module as described in any one of claims 1-6.

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