Display module and display device

Abstract

The invention relates to the technical field of display, in particular to a display module and a display device.The display module comprises a display panel which comprises a substrate and further comprises a display area and a sensing area at least partially surrounded by the display area; the supporting layer is located on the backlight side of the display panel, the supporting layer comprises a main body supporting part, a first opening hole and a transition supporting part located between the main body supporting part and the first opening hole, the first opening hole and the sensing area are at least partially overlapped on the projection of the substrate, and a chamfering structure is arranged on the edge of the side, facing the display panel, of the transition supporting part. The edge of the side, facing the display panel, of the transition supporting part is provided with a chamfer structure, so that the display panel can be supported when the display panel is subjected to external impact, excessive deformation of the display panel is prevented, meanwhile, a certain deformation space can be provided for the display panel, deformation of the display panel is guided, and the display quality is improved. A right-angle sharp corner on the supporting piece is avoided, so that the problem that the display panel is damaged by jacking is solved, and the impact resistance is improved.

Description

Technical Field

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

[0002] With the development of display technology, more and more display modules are 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 a side opposite to the display surface of the display substrate, and the support plate is usually supported by a metal material that is not light-transmissive. Therefore, when it is necessary to increase the screen-to-body ratio of a display device integrated with the flexible display panel, it is necessary to set a light-through hole on the support plate and place the sensing device in the display device, such as a camera, on the side facing the through hole on the support.

[0004] However, due to the large 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. In this way, when the display panel is subjected to external pressure or impact, the deformation of the support is small, and the edge of the through hole can easily damage the display substrate, resulting in display failure, making the display module less resistant to impact. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a display module and a display device.

[0006] In a first aspect, the present application provides a display module, including a display panel, wherein the display panel includes a substrate,

[0007] The display panel further comprises 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 a chamfer structure is set on the edge of the transition support portion facing the display panel.

[0009] In a second aspect, the present application provides a display device, comprising a sensing device and the display module provided in the first aspect, wherein the sensing device is disposed on a side of the supporting layer away from the display panel, and the sensing device faces the first opening.

[0010] Compared with the prior art, the technical solution provided by the embodiments of the present application has the following advantages:

[0011] The display module is provided with a support layer, the 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. A chamfered structure is provided on the edge of the transition support portion on one side facing the display panel, so that the display panel can be supported when the display panel is subjected to an external impact to prevent excessive deformation of the display panel. At the same time, a certain deformation space can be provided for the display panel, and a guide can be provided for the deformation of the display panel to avoid the existence of right-angled sharp corners on the support member, thereby improving the problem of damaging the display panel and improving the impact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 A perspective view of a display module provided by an embodiment of the present application;

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

[0016] Figure 3 A schematic diagram of the structure of a display module provided in an embodiment of the present application;

[0017] Figure 4 for Figure 3 A cross-sectional schematic diagram of a display module in FIG.

[0018] Figure 5 for Figure 4 A local enlarged schematic diagram of the middle A;

[0019] Figure 6 for Figure 3 A schematic diagram showing a display module being impacted;

[0020] Figure 7 A strain comparison diagram of a support layer provided in an embodiment of the present application without a chamfered structure and with a chamfered structure;

[0021] Figure 8 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application;

[0022] Fig. 9 for Figure 8 A partial enlarged schematic diagram of point B in the middle;

[0023] Fig.10 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application;

[0024] Fig.11 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application;

[0025] Fig.12 for Fig.11 A partial enlarged schematic diagram of point C in the middle;

[0026] Fig.13 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application.

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

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

[0029] 3. buffer layer; 31. third opening;

[0030] 4. Sensing devices. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0033] Figure 1 A perspective view of a display module provided in an embodiment of the present application. Figure 2 for Figure 1 A cross-sectional schematic diagram of a display module in FIG.

[0034] The display module may be a display module of a mobile phone, a tablet computer, a car computer, a game console or a wearable device, but is not limited thereto. Figure 1 An implementation method in which the display module is a display module of a mobile phone is given.

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

[0036] The above-mentioned sensing device 4 is arranged corresponding to the sensing area 1b, and 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. Among them, the sensing area 1b can be a through hole or a notch arranged on the display panel 1, or the display panel with the sensing area 1b is a cup (Camera Under Panel) screen. In this case, there is no need to open a hole in the display panel 1, but the sensing device 4 is hidden under the display panel 1.

[0037] The supporting layer 2 plays a role in supporting the display panel 1, and the supporting layer 2 is defined with openings so that the sensing device 4 can face the sensing area 1b. For a conventional display panel, the supporting layer may be a composite foam, etc., while for a folding display screen, the supporting layer 2 is made of stainless steel, which is relatively hard. Therefore, when the display panel 1 is subjected to external impact, the edge of the opening on the supporting layer 2 is easy to damage the display panel 1.

[0038] Figure 3 A schematic diagram of the structure of a display module provided in an embodiment of the present application. Figure 4 A cross-sectional schematic diagram of a display module provided in an embodiment of the present application. Figure 5 for Figure 4 A local enlarged schematic diagram of point A in the middle. Figure 6 for Figure 3 Schematic diagram of the display module when it is impacted.

[0039] In order to solve the problem that the edge of the opening of the support layer 2 is easy to damage the display panel 1, a display module is provided. 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, and the display panel 1 also includes 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 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 in projection on the substrate 11, and a chamfer structure 231 is provided on the edge of the transition support portion 23 facing the display panel 1.

[0040] It can be understood that the sensing area 1b on the display panel 1 and the first opening 22 on the supporting layer 2 at least partially overlap, so that the sensing device 4 located on the side of the supporting layer 2 facing away from the display panel 1 is allowed to function through the first opening 22 and the sensing area 1b, and a chamfered structure 231 is provided on the edge of the transition support portion 23 facing the side of the display panel 1, so that the display panel 1 can be supported when the display panel 1 is subjected to external impact, and a certain deformation space can be provided for the display panel 1 to prevent the display panel 1 from excessive deformation, and provide guidance for the deformation of the display panel 1 to avoid the existence of right-angled sharp corners on the supporting 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 sensing device 4 may be a camera device, which can shoot through the first opening 22 and the sensing area 1b. At this time, the sensing area 1b allows external light to pass through and is a light-transmitting area. Of course, the sensing device 4 may also be other structures, such as a fingerprint recognition device, a light sensor, etc.

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

[0043] In some embodiments, reference Figure 3 and Figure 4 , the aperture of the first opening 22 is a, the thickness of the support layer 2 is b, and the width of the chamfered 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. The aperture of the first opening 22 is amm, the thickness of the support layer 2 is bmm, and the width of the chamfered structure 231 in the radial direction of the first opening 22 is cmm.

[0044] It can be understood that if the aperture of the first opening 22 is larger than the thickness of the supporting layer 2, then the area of ​​the display panel 1 corresponding to the first opening 22 and suspended is relatively large, so when the display panel 1 is impacted, the amount of phase change of the display panel 1 is relatively large. By setting the width of the chamfered structure 231 in the radial direction of the first opening 22 to be relatively large, the deformation speed of the display panel 1 can be slowed down when the display panel 1 is impacted, that is, it plays a better buffering role, thereby reducing the risk of damaging the display panel 1. When the aperture of the first opening 22 is less than or equal to the thickness of the supporting layer 2, then the area of ​​the display panel 1 corresponding to the first opening 22 and suspended is relatively small, so when the display panel 1 is impacted, the amount of phase change of the display panel 1 is relatively small. At this time, the width of the chamfered structure 231 in the radial direction of the first opening 22 can be set to be relatively small, and it can still play a good buffering role.

[0045] In some embodiments, reference Figure 5 , the extension length of the chamfered structure 231 in the axial direction of the first opening 22 is b1, b1≤b, b is the thickness of the support layer 2, and the width of the chamfered structure 231 in the radial direction of the first opening 22 is c. Wherein, tanx=b / c, 10°<x<60°, x is the angle between the hypotenuse of the right triangle and one of the right angles, the length of the right angle is c, and the length of the other right angle is b1. Wherein, the units of b1, b and c are all selected as mm.

[0046] It can be understood that the chamfered structure 231 forms a right triangle with the length of the first opening 22 in the axial direction and the width in the radial direction as two right-angled sides, wherein the angle between the hypotenuse of the right triangle and the right-angled side with a length of c is 10°-60°. If this angle is greater than 60°, when the chamfered structure 231 is an arc chamfer, the slope of the arc surface is large, and the buffering effect on the display panel 1 is poor; and when the chamfered structure 231 is a C chamfer, the edges on the transition support portion 23 are close to right-angled edges, and it is still easy to damage the display panel 1. When the angle is less than 10°, although the chamfered structure 231 can better buffer the movement of the display panel 1, the processing difficulty is greater. Considering the cost requirements, the angle is selected to be greater than 10°. Of course, the angle can also be set to be less than 10°.

[0047] For example, refer to Figure 5 The chamfer structure 231 can be configured as an arc chamfer. By selecting an arc chamfer, the edge of the transition support portion 23 facing the display panel 1 does not have any sharp corners, which can further avoid damaging the display panel 1. Specifically, refer to Figure 6 When the display panel 1 is impacted, the presence of the arc chamfer enables the display panel 1 to deform along the curved surface of the arc chamfer, thereby preventing the support layer 2 from damaging the display panel 1.

[0048] Figure 7 This is a strain comparison diagram of a support layer without a chamfer structure and with a chamfer structure provided in an embodiment of the present application.

[0049] In addition, refer to Figure 7 It can be seen that after the chamfer structure 231 is set on the transition support part 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 impacted. Among them, 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%. It can be seen that the chamfer structure 231 can effectively reduce the risk of the support layer 2 damaging the display panel 1 when the display panel 1 is impacted.

[0050] Figure 8 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application. Fig. 9 for Figure 8 A local enlarged schematic diagram of point B in the middle.

[0051] In some embodiments, reference Figure 8 and Fig. 9 The chamfered structure 231 may also be configured as a C-chamfer, which can also provide buffering when the display panel 1 is impacted.

[0052] Fig.10 A cross-sectional schematic diagram of another display module is provided for an embodiment of the present application.

[0053] In some embodiments, reference Fig.10 The display module also includes a buffer layer 3 arranged between the support layer 2 and the display panel 1, and a third opening 31 is opened 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] It can be understood that by setting the buffer layer 3, the movement of the display panel 1 can be buffered when the display panel 1 is impacted, and the display panel 1 and the support layer 2 are separated, so as to further prevent the support layer 2 from damaging the display panel 1. In addition, the buffer layer 3 is provided with a third opening 31, 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, that is, the aperture of the third opening 31 is smaller than the aperture of the first opening 22, which can facilitate the assembly between the buffer layer 3 and the support layer 2, and avoid the situation that the third opening 31 and the first opening 22 are difficult to align due to processing or installation errors.

[0055] Fig.11 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application, Fig.12 for Fig.11 A partial enlarged schematic diagram of point C in the middle.

[0056] In some embodiments, reference Fig.11 and Fig.12, the display panel 1 is provided with a second opening 121 in the sensing area 1b, 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. It can be understood that the sensing area 1b is provided with the second opening 121 and the area of ​​the second opening 121 is smaller than the first opening 22, so that the processing and / or assembly errors of the display panel 1 and the support layer 2 can be eliminated so that the first opening 22 is blocked by the display panel 1, and even if an error occurs, the second opening 121 can be ensured to be within the area surrounded by the first opening 22, so that it is convenient to install the sensing device 4, so that the sensing device 4 can realize the corresponding function through the first opening 22 and the second opening 121.

[0057] The display panel 1 further comprises a film layer 12, and the film layer 12 is located on the side of the substrate 11 facing the support layer 2. The film layer 12 is provided with the second opening 121.

[0058] Furthermore, the aperture of the first opening 22 is amm, the thickness of the support layer 2 is bmm, the width of the chamfered structure 231 in the radial direction of the first opening 22 is cmm, and the aperture of the second opening 121 is dmm. If (ad) / 2≤b, then c≤b, and if (ad) / 2>b, then c>b.

[0059] Understandably, since the second opening 121 is provided on the display panel 1, if (ad) / 2>b, the width of the suspended portion of the display panel 1 in the radial direction of the first opening 22 is relatively large, so the width c of the chamfered 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 as to better buffer the movement of the display panel 1 when the display panel 1 is impacted and avoid damaging the display panel 1. If (ad) / 2≤b, then c≤b, and the width of the suspended portion of the display panel 1 in the radial direction of the first opening 22 is relatively small, so the width c of the chamfered 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] Fig.13 A cross-sectional schematic diagram of another display module is provided for an embodiment of the present application.

[0061] In some embodiments, reference Fig.13 The display module also includes a buffer layer 3 arranged between the support layer 2 and the display panel 1, and a third opening 31 is opened 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] It can be understood that by setting the buffer layer 3, the movement of the display panel 1 can be buffered when the display panel 1 is impacted, and the display panel 1 and the support layer 2 are separated, so as to further prevent the support layer 2 from damaging the display panel 1. In addition, the buffer layer 3 is provided with a third opening 31, 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, that is, the aperture of the third opening 31 is smaller than the aperture of the first opening 22, which can facilitate the assembly between the buffer layer 3 and the support layer 2, and avoid the situation that 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] It can be understood that 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 opening 22, the second opening 121 and the third opening 31. For example, the sensing device is a camera device. At this time, external light can enter the camera device through the second opening 121, the third opening 31 and the first opening 22, so that the camera device can realize the shooting function.

[0065] Among them, it is preferred that 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. This makes it easy to align the second opening 121 and the third opening 31 when assembling the buffer layer 3 and the display panel 1, eliminating the impact of processing or assembly errors that make it difficult to align the second opening 121 and the third opening 31.

[0066] This embodiment further provides a display device, which includes a sensing device 4 and a display module in any of the above embodiments, wherein the sensing device 4 is disposed on a side of the support layer 2 away from the display panel 1, and the sensing device 4 faces the first opening 22. In this way, the sensing device 4 realizes corresponding functions through the first opening 22 and the sensing area 1b on the display panel 1.

[0067] The sensing device 4 may be at least one of a fingerprint recognition device, a camera device, and 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, so that the camera assembly can realize the shooting function. For another example, when the sensing device 4 is a fingerprint recognition device, a finger is pressed on the sensing area of ​​the display panel 1, and the light emitted by the display panel 1 is directed to the finger and reflected by the finger to the fingerprint recognition device. The fingerprint recognition device generates a corresponding fingerprint image according to the received light, so that the function of identifying and verifying the user's fingerprint can be realized.

[0069] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0070] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display module, characterized in that: include: A display panel (1), the display panel (1) comprising a substrate (11), the display panel (1) further comprising 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) comprises 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 overlapping on a projection of the substrate (11), and a chamfered structure (231) is provided on an edge of the transition support portion (23) facing the display panel (1).

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

3. The display module according to claim 1, characterized in that: The aperture of the first opening (22) is a, the thickness of the support layer (2) is b, and the width of the chamfered 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, wherein d≤b.

4. The display module according to claim 1, characterized in that: The extending length of the chamfered structure (231) in the axial direction of the first opening (22) is b1, b1≤b, b is the thickness of the support layer (2), and the width of the chamfered structure (231) in the radial direction of the first opening (22) is c; tan x=b1 / c, 10°<x<60°, x is the angle between the hypotenuse of the right triangle and one of the right-angled sides, the length of the right-angled side is c, and the length of the other right-angled side is b1.

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

6. The display module according to claim 5, characterized in that: The aperture of the first opening (22) is a, the thickness of the support layer (2) is b, the width of the chamfered structure (231) in the radial direction of the first opening (22) is c, and the aperture of the second opening (121) is d; If (ad) / 2≤b, then c≤b; if (ad) / 2>b, then c>b.

7. The display module according to claim 1, characterized in that: It also comprises a buffer layer (3) arranged 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 located within the range of the projection of the first opening (22) on the substrate (11).

8. The display module according to claim 7, characterized in that: The display panel (1) is provided with a second opening (121) in the sensing area (1b), and the projection of the second opening (121) on the substrate (11) is located 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).

9. The display module according to claim 1, characterized in that: The display module further comprises a cover plate, which is located on a side of the display panel (1) away from the support layer (2).

10. A display device, characterized in that: It comprises a sensing device and a display module as claimed in any one of claims 1 to 9, wherein the sensing device (4) is arranged on a side of the support layer (2) away from the display panel (1), and the sensing device (4) faces the first opening (22).

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

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