Display module and display device

Abstract

This application relates to the field of display technology, and more particularly to a display module and display device. The display module includes: a display panel, including a substrate, a display area, and a sensing area at least partially surrounded by the display area; a support layer located on the backlight side of the display panel, and the support layer includes a main support portion, a first opening, and a transition support portion located between the main support portion and the first opening. The first opening and the sensing area at least partially overlap on the projection of the first opening onto the substrate. The transition support portion has a chamfered structure on its edge facing the display panel. The chamfered structure on the edge of the transition support portion facing the display panel can support the display panel when it is subjected to external impact, preventing excessive deformation of the display panel. It also provides a certain deformation space for the display panel and guides the deformation of the display panel, avoiding sharp right angles on the support component, thereby improving the problem of damage to the display panel and enhancing its impact resistance.

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 display technology, more and more display modules are being equipped with flexible display panels such as foldable glass panels.

[0003] The flexible display panel includes a display substrate and a support plate connected to the side of the display substrate opposite to the display surface. The support plate is typically made of a non-transparent metal material. Therefore, when it is necessary to increase the screen-to-body ratio of a display device integrating this flexible display panel, light-transmitting holes need to be provided on the support plate, and the sensing devices in the display device, such as cameras, need to be placed on the side facing the light-transmitting holes on the support.

[0004] However, due to the high rigidity of the support plate, it cannot be cut together with the optical film in the display substrate. Therefore, in order to ensure the assembly quality, the diameter of the through hole on the support plate must be larger than the diameter of the through hole on the optical film. As a result, when the display panel is subjected to external pressure or impact, the deformation of the support is small, and the edge of the light-transmitting hole is easy to damage the display substrate, leading to display failure and making the display module less resistant to impact. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a display module and a display device.

[0006] In a first aspect, this application provides a display module, including a display panel, the display panel including a substrate.

[0007] The display panel further includes a display area and a sensing area at least partially surrounded by the display area;

[0008] A support layer is located on the backlight side of the display panel, and the support layer includes a main support portion, a first opening, and a transition support portion located between the main support portion and the first opening. The first opening and the sensing area at least partially overlap on the projection of the substrate, and the transition support portion has a chamfered structure on the edge facing the side of the display panel.

[0009] Secondly, this application provides a display device, including a sensing device and a display module provided in the first aspect, wherein the sensing device is disposed on the side of the support layer away from the display panel and the sensing device faces the first opening.

[0010] The technical solution provided in this application has the following advantages compared with the prior art:

[0011] This display module incorporates a support layer located on the backlight side of the display panel. The support layer includes a main support portion, a first opening, and a transition support portion between the main support portion and the first opening. The transition support portion has a chamfered edge on one side facing the display panel. This provides support to the display panel when it is subjected to external impact, preventing excessive deformation. It also provides some deformation space and guides the deformation of the display panel, avoiding sharp right angles on the support components. This improves the problem of damaging the display panel and enhances its impact resistance. Attached Figure Description

[0012] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A perspective view of the display module provided in the embodiments of this application;

[0015] Figure 2 for Figure 1 A cross-sectional view of the display module in the XX direction;

[0016] Figure 3 This is a schematic diagram of the structure of the display module provided in the embodiments of this application;

[0017] Figure 4 for Figure 3 A cross-sectional view of the display module in the diagram;

[0018] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle;

[0019] Figure 6 for Figure 3 A schematic diagram of the display module being impacted;

[0020] Figure 7 A strain comparison diagram of the support layer with and without chamfered structure provided in the embodiments of this application;

[0021] Figure 8 This is a cross-sectional schematic diagram of another display module provided in an embodiment of this application;

[0022] Figure 9 for Figure 8 A magnified view of a portion of point B in the middle;

[0023] Figure 10 This is a cross-sectional schematic diagram of another display module provided in an embodiment of this application;

[0024] Figure 11 This is a cross-sectional schematic diagram of another display module provided in an embodiment of this application;

[0025] Figure 12 for Figure 11 A magnified view of a portion of point C in the middle;

[0026] Figure 13 This is a cross-sectional schematic diagram of another display module provided in an embodiment of this application.

[0027] Wherein, 1 is the display panel; 1a is the display area; 1b is the sensing area; 11 is the substrate; 12 is the film layer; and 121 is the second opening.

[0028] 2. Support layer; 21. Main support part; 22. First opening; 23. Transition support part; 231. Chamfered structure;

[0029] 3. Buffer layer; 31. Third opening;

[0030] 4. Sensing devices. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0033] Figure 1 A perspective view of the display module provided in an embodiment of this application. Figure 2 for Figure 1 A cross-sectional view of the display module.

[0034] The display module can be a display module for mobile phones, tablets, car infotainment systems, game consoles, or wearable devices, but is not limited to these. Figure 1 The document describes an implementation method for a mobile phone display module.

[0035] Reference Figure 1 and Figure 2The aforementioned display module includes a display panel 1, a support layer 2, and a sensing device 4. The display panel 1 can display images through a display area 1a. The display panel 1 also has a sensing area 1b, which can be one or more, meaning the number of sensing areas 1b can be set according to actual needs.

[0036] The aforementioned sensing device 4 is positioned corresponding to the sensing area 1b. The sensing device 4 can receive external input transmitted through the sensing area 1b or provide output through the sensing area 1b. For example, the sensing device 4 can be a camera device or a sensor device. The sensing area 1b can be a through hole or notch provided on the display panel 1, or the display panel with the sensing area 1b can be a cup (Camera Under Panel) screen, in which case there is no need to make a hole in the display panel 1, but the sensing device 4 is hidden under the display panel 1.

[0037] The aforementioned support layer 2 serves to support the display panel 1, and the support layer 2 has openings so that the sensing device 4 can be directly aligned with the sensing area 1b. For conventional display panels, the support layer can be composite foam, etc., while for foldable displays, the aforementioned support layer 2 is made of stainless steel, which is more rigid. Therefore, when the display panel 1 is subjected to external impact, the edges of the openings on the support layer 2 can easily damage the display panel 1.

[0038] Figure 3 This is a schematic diagram of the structure of the display module provided in an embodiment of this application. Figure 4 This is a cross-sectional schematic diagram of the display module provided in an embodiment of this application. Figure 5 for Figure 4 A magnified view of a portion of point A in the middle. Figure 6 for Figure 3 A schematic diagram of the display module under impact.

[0039] To address the issue that the edges of the openings in the support layer 2 can easily damage the display panel 1, a display module is provided, as described above. Figures 3 to 6 The display module includes a display panel 1 and a support layer 2. The display panel 1 includes a substrate 11, a display area 1a, and a sensing area 1b at least partially surrounded by the display area 1a. The support layer 2 is located on the backlight side of the display panel 1 and includes a main support portion 21, a first opening 22, and a transition support portion 23 located between the main support portion 21 and the first opening 22. The first opening 22 and the projection of the sensing area 1b onto the substrate 11 at least partially overlap. The transition support portion 23 has a chamfered structure 231 at its edge facing the display panel 1.

[0040] Understandably, the sensing area 1b on the display panel 1 and the first opening 22 on the support layer 2 at least partially overlap, thus allowing the sensing device 4 located on the side of the support layer 2 away from the display panel 1 to function through the first opening 22 and the sensing area 1b. The transition support portion 23 has a chamfered structure 231 on the edge facing the display panel 1, which can support the display panel 1 when it is subjected to external impact, provide a certain deformation space for the display panel 1, prevent the display panel 1 from being excessively deformed, and guide the deformation of the display panel 1, avoiding right angles and sharp corners on the support layer 2, thereby improving the problem of damaging the display panel 1 and improving the impact resistance of the display module.

[0041] For example, the aforementioned sensing device 4 can be a camera device. The camera device can take pictures through the first opening 22 and the sensing area 1b. At this time, the sensing area 1b allows external light to pass through, making it a light-transmitting area. Of course, the aforementioned sensing device 4 can also be other structures, such as a fingerprint recognition device, a light sensor, etc.

[0042] The aforementioned display module also includes a cover plate (not shown in the figure), which is located on the side of the display panel 1 away from the support layer 2. In addition, the aforementioned display panel 1 also includes a film layer 12, which is located on the side of the substrate 11 facing the support layer 2.

[0043] In some embodiments, refer to Figure 3 and Figure 4 The diameter of the first opening 22 is *a*, the thickness of the support layer 2 is *b*, and the radial width of the chamfered structure 231 in the first opening 22 is *c*. If *a* ≤ *b*, then *c* ≤ *d*; if *a* > *b*, then *c* > *d*, where *d* ≤ *b*. Specifically, the diameter of the first opening 22 is *a* mm, the thickness of the support layer 2 is *b* mm, and the radial width of the chamfered structure 231 in the first opening 22 is *c* mm.

[0044] Understandably, if the diameter of the first opening 22 is greater than the thickness of the support layer 2, then the area of ​​the display panel 1 suspended corresponding to the first opening 22 is relatively large. Consequently, when the display panel 1 is impacted, the deformation of the display panel 1 is relatively large. By setting the radial width of the chamfer structure 231 of the first opening 22 to be relatively large, the deformation speed of the display panel 1 can be slowed down when impacted, thus providing a better buffering effect and reducing the risk of damage to the display panel 1. Conversely, when the diameter of the first opening 22 is less than or equal to the thickness of the support layer 2, the area of ​​the display panel 1 suspended corresponding to the first opening 22 is relatively small. Consequently, when the display panel 1 is impacted, the deformation of the display panel 1 is relatively small. In this case, the radial width of the chamfer structure 231 of the first opening 22 can be set to be relatively small, still providing a good buffering effect.

[0045] In some embodiments, refer to Figure 5 The chamfered structure 231 extends axially in the first opening 22 by length b1, where b1 ≤ b, and b is the thickness of the support layer 2. The chamfered structure 231 has a radial width of c in the first opening 22. Here, tanx = b / c, 10° < x < 60°, where x is the angle between the hypotenuse and one of the legs of the right triangle, the length of the leg is c, and the length of the other leg is b1. The units for b1, b, and c are all chosen to be mm.

[0046] Understandably, the chamfered structure 231 forms a right triangle with its axial length and radial width as the two legs, where the included angle between the hypotenuse and the leg of length c is 10°-60°. If this included angle is greater than 60°, when the chamfered structure 231 is an arc-shaped chamfer, the slope of the arc surface is large, resulting in poor cushioning effect on the display panel 1. When the chamfered structure 231 is a C-shaped chamfer, the edges on the transition support 23 are close to right angles, which can easily damage the display panel 1. When the included angle is less than 10°, although the chamfered structure 231 can better cushion the movement of the display panel 1, the manufacturing difficulty is greater. Considering cost requirements, the included angle is set to be greater than 10°. Of course, the included angle can also be set to less than 10°.

[0047] For example, refer to Figure 5 The aforementioned chamfer structure 231 can be configured as an arc-shaped chamfer. By selecting an arc-shaped chamfer, the edge of the transition support portion 23 facing the display panel 1 is free of sharp corners, further preventing damage to the display panel 1. Specifically, refer to... Figure 6 When the display panel 1 is impacted, the presence of the arc-shaped chamfer allows the display panel 1 to deform along the arc surface of the arc-shaped chamfer, thereby preventing the support layer 2 from damaging the display panel 1.

[0048] Figure 7 A strain comparison diagram showing the support layer with and without chamfered structure provided in the embodiments of this application.

[0049] Additionally, refer to Figure 7 It can be seen that after the chamfer structure 231 is provided on the transition support portion 23 of the support layer 2, the strain of the touch layer, the metal layer in the thin-film package, and the TFT (Thin Film Transistor) device area of ​​the display panel 1 is significantly reduced when subjected to impact. Specifically, the strain of the touch layer is reduced by 13.23%, the strain of the metal layer in the thin-film package is reduced by at least 12.35%, and the strain of the TFT device area is reduced by 25.24%. Therefore, it is evident that providing the chamfer structure 231 can effectively reduce the risk of the support layer 2 damaging the display panel 1 when it is subjected to impact.

[0050] Figure 8 This is a cross-sectional schematic diagram of another display module provided in an embodiment of this application. Figure 9 for Figure 8 A magnified view of a portion of point B in the middle.

[0051] In some embodiments, refer to Figure 8 and Figure 9 The chamfered structure 231 can also be set as a C-shaped chamfer, which can also buffer the impact when the display panel 1 is subjected to an impact.

[0052] Figure 10 This application provides a cross-sectional schematic diagram of another display module.

[0053] In some embodiments, refer to Figure 10 The display module also includes a buffer layer 3 disposed between the support layer 2 and the display panel 1. A third opening 31 is provided on the buffer layer 3, and the projection of the third opening 31 on the substrate 11 is located within the projection range of the first opening 22 on the substrate 11.

[0054] Understandably, by providing the buffer layer 3, the movement of the display panel 1 can be buffered when it is impacted, while also separating the display panel 1 from the support layer 2, thereby further preventing the support layer 2 from damaging the display panel 1. Moreover, a third opening 31 is provided on the buffer layer 3, and the projection of the third opening 31 on the substrate 11 is within the projection range of the first opening 22 on the substrate 11. That is, the diameter of the third opening 31 is smaller than the diameter of the first opening 22, which facilitates the assembly between the buffer layer 3 and the support layer 2 and avoids the situation where the third opening 31 and the first opening 22 are difficult to align due to processing or installation errors.

[0055] Figure 11 This is a cross-sectional schematic diagram of another display module provided in an embodiment of this application. Figure 12 for Figure 11 A magnified view of a portion of point C.

[0056] In some embodiments, refer to Figure 11 and Figure 12A second opening 121 is formed in the sensing area 1b of the display panel 1. The projection of the second opening 121 onto the substrate 11 is within the range of the projection of the first opening 22 onto the substrate 11. Understandably, the second opening 121 is formed in the sensing area 1b and the area of ​​the second opening 121 is smaller than that of the first opening 22. This can eliminate the possibility that the first opening 22 is blocked by the display panel 1 due to processing and / or assembly errors between the display panel 1 and the support layer 2. Even if errors occur, the second opening 121 can still be placed within the area enclosed by the first opening 22. This facilitates the installation of the sensing device 4, allowing the sensing device 4 to perform its corresponding functions through the first opening 22 and the second opening 121.

[0057] The display panel 1 further includes a film layer 12, which is located on the side of the substrate 11 facing the support layer 2. The film layer 12 has the aforementioned second opening 121.

[0058] Furthermore, the diameter of the first opening 22 is a mm, the thickness of the support layer 2 is b mm, the width of the chamfered structure 231 in the radial direction of the first opening 22 is c mm, and the diameter of the second opening 121 is d1 mm. Wherein, if (a-d1) / 2≤b, then c≤b, and if (a-d1) / 2>b, then c>b.

[0059] Understandably, since the display panel 1 has a second opening 121, if (a-d1) / 2 > b, then the width of the suspended part of the display panel 1 in the radial direction of the first opening 22 is relatively large. Therefore, the width c of the chamfer structure 231 in the radial direction of the first opening 22 is set to be greater than the thickness b of the support layer 2, so that the movement of the display panel 1 can be better buffered when the display panel 1 is impacted, avoiding damage to the display panel 1. Conversely, if (a-d1) / 2 ≤ b, then c ≤ b, and the width of the suspended part of the display panel 1 in the radial direction of the first opening 22 is relatively small. Therefore, the width c of the chamfer structure 231 in the radial direction of the first opening 22 can be set to be less than or equal to the thickness b of the support layer 2.

[0060] Figure 13 This application provides a cross-sectional schematic diagram of another display module.

[0061] In some embodiments, refer to Figure 13 The display module also includes a buffer layer 3 disposed between the support layer 2 and the display panel 1. A third opening 31 is provided on the buffer layer 3, and the projection of the third opening 31 on the substrate 11 is located within the projection range of the first opening 22 on the substrate 11.

[0062] Understandably, by providing the buffer layer 3, the movement of the display panel 1 can be buffered when it is impacted, while also separating the display panel 1 from the support layer 2, thereby further preventing the support layer 2 from damaging the display panel 1. Moreover, a third opening 31 is provided on the buffer layer 3, and the projection of the third opening 31 on the substrate 11 is within the projection range of the first opening 22 on the substrate 11. That is, the diameter of the third opening 31 is smaller than the diameter of the first opening 22, which facilitates the assembly between the buffer layer 3 and the support layer 2 and avoids the situation where the third opening 31 and the first opening 22 are difficult to align due to processing or installation errors.

[0063] Furthermore, the projection of the second opening 121 on the substrate 11 is located within the projection range of the third opening 31 on the substrate 11 or coincides with the projection of the third opening 31 on the substrate 11.

[0064] Understandably, in this case, holes are provided on the support layer 2, the buffer layer 3 and the display panel 1, so that the sensing device can realize the corresponding function through the first hole 22, the second hole 121 and the third hole 31. For example, if the sensing device is a camera device, then the external light can enter the camera device through the second hole 121, the third hole 31 and the first hole 22, so that the camera device can realize the shooting function.

[0065] Preferably, the projection of the second opening 121 on the substrate 11 is within the projection range of the third opening 31 on the substrate 11. This facilitates the alignment of the second opening 121 and the third opening 31 when assembling the buffer layer 3 and the display panel 1, eliminating the influence of processing or assembly errors that make it difficult to align the second opening 121 and the third opening 31.

[0066] This embodiment also provides a display device, which includes a sensing device 4 and a display module as described in any of the above embodiments. The sensing device 4 is disposed on the side of the support layer 2 facing away from the display panel 1, and the sensing device 4 faces the first opening 22. In this way, the sensing device 4 can realize the corresponding function through the first opening 22 and the sensing area 1b on the display panel 1.

[0067] The sensing device 4 can be at least one of a fingerprint recognition device, a camera device, or a light sensor.

[0068] For example, when the sensing device 4 is a camera assembly, external light can enter the camera assembly through the sensing area 1b on the display panel 1 and the first opening 22 of the support layer 2, enabling the camera assembly to perform the shooting function. As another example, when the sensing device 4 is a fingerprint recognition device, when a finger is pressed on the sensing area of ​​the display panel 1, light emitted from the display panel 1 is directed towards the finger and reflected by the finger to the fingerprint recognition device. The fingerprint recognition device generates a corresponding fingerprint image based on the received light, thus enabling the function of recognizing and verifying the user's fingerprint.

[0069] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0070] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display module, characterized in that, include: Display panel (1), the display panel (1) includes a substrate (11), the display panel (1) also includes a display area (1a) and a sensing area (1b) at least partially surrounded by the display area (1a). A support layer (2) is located on the backlight side of the display panel (1), and the support layer (2) includes a main support portion (21), a first opening (22), and a transition support portion (23) located between the main support portion (21) and the first opening (22). The first opening (22) and the sensing area (1b) at least partially overlap on the projection of the substrate (11). The transition support portion (23) has a chamfered structure (231) on the edge facing the side of the display panel (1). The diameter of the first opening (22) is a, the thickness of the support layer (2) is b, and the width of the chamfer structure (231) in the radial direction of the first opening (22) is c; if a≤b, then c≤d; if a>b, then c>d, where d≤b.

2. The display module according to claim 1, characterized in that, The chamfer structure (231) includes an arc chamfer or a C-shaped chamfer.

3. The display module according to claim 1, characterized in that, The chamfered structure (231) extends axially in the first opening (22) with a length of b1, b1≤b, where b is the thickness of the support layer (2), and the chamfered structure (231) has a width in the first opening (22) in the radial direction with a width of c. tan x = b1 / c, 10° < x < 60°, where x is the angle between the hypotenuse of the right triangle and one of its legs, the length of which is c, and the length of the other leg is b1.

4. The display module according to claim 1, characterized in that, The display panel (1) has a second opening (121) in the sensing area, and the projection of the second opening (121) on the substrate (11) is within the range of the projection of the first opening (22) on the substrate (11).

5. The display module according to claim 4, characterized in that, The diameter of the first opening (22) is a, the thickness of the support layer (2) is b, the width of the chamfer structure (231) in the radial direction of the first opening (22) is c, and the diameter of the second opening (121) is d1. If (a-d1) / 2≤b, then c≤b; if (a-d1) / 2>b, then c>b.

6. The display module according to claim 1, characterized in that, It also includes a buffer layer (3) disposed between the support layer (2) and the display panel (1), wherein a third opening (31) is provided on the buffer layer (3), and the projection of the third opening (31) on the substrate (11) is within the range of the projection of the first opening (22) on the substrate (11).

7. The display module according to claim 6, characterized in that, The display panel (1) has a second opening (121) in the sensing area (1b). The projection of the second opening (121) on the substrate (11) is within the range of the projection of the third opening (31) on the substrate (11) or coincides with the projection of the third opening (31) on the substrate (11).

8. The display module according to claim 1, characterized in that, The display module also includes a cover plate located on the side of the display panel (1) away from the support layer (2).

9. A display device, characterized in that, Includes a sensing device and a display module as described in any one of claims 1-8, wherein the sensing device (4) is disposed on the side of the support layer (2) away from the display panel (1) and the sensing device (4) faces the first opening (22).

10. The display device according to claim 9, characterized in that, The sensing device (4) includes at least one of a fingerprint recognition device, a camera device, and a light sensor.

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