Display module and display device

Abstract

The invention provides a display module and a display device, and relates to the technical field of display. The display module comprises a display panel, a functional layer, a cover plate and a cushion block, the display panel comprises a first area and a second area connected with the first area, the first area is located on the first edge of the display panel, and the second area comprises a display area. The functional layer is located on the light emitting side of the display panel, and the orthographic projection of the functional layer on the display panel is located in the second area. The cover plate is located on the side, away from the display panel, of the functional layer, and the orthographic projection of the cover plate on the display panel at least partially covers the first area. At least part of the cushion block is located between the cover plate and the first area, the first side of the cushion block is connected with the cover plate, and the second side of the cushion block is connected with the first area. The frame width of the display device is reduced, and the screen-to-body ratio is increased.

Description

Technical Field

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

[0002] As users have higher and higher requirements for the aesthetics of display devices, reducing the border width of display devices and increasing the screen-to-body ratio of display devices has become an issue that needs to be continuously improved. Summary of the invention

[0003] Embodiments of the present disclosure provide a display module and a display device, which can reduce the border width of the display device.

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

[0005] On the one hand, a display module is provided, including a display panel, a functional layer, a cover plate and a pad, wherein the display panel includes a first area and a second area connected to the first area, the first area is located at a first edge of the display panel, and the second area includes a display area; the functional layer is located on the light emitting side of the display panel, and the orthographic projection of the functional layer on the display panel is located in the second area; the cover plate is located on a side of the functional layer away from the display panel, and the orthographic projection of the cover plate on the display panel at least partially covers the first area; at least a partial area of ​​the pad is located between the cover plate and the first area, and the first side of the pad is connected to the cover plate, and the second side of the pad is connected to the first area.

[0006] In some embodiments, when the display module is in a flattened state, the display module is a flexible display module, and a gap is provided between the cushion block and the functional layer.

[0007] In some embodiments, when the display module is in a flattened state, the size of the gap along the first direction is greater than or equal to a first distance; wherein, the first direction is parallel to the cover plate and perpendicular to the first edge; when the display module is in a bent state, the distance between the edges of the cover plate and the display panel on the same side as the first edge shifted along the first direction is the first distance.

[0008] In some embodiments, the display module is a flexible display module, a support layer is provided on a side of the first area away from the cover plate, and the support layer is configured to support the first area; an overlapping area of ​​the support layer, the pad and the cover plate in the orthographic projection of the display panel is a overlap area, and the cover plate located in the overlap area is configured to overlap with the frame of the display device.

[0009] In some embodiments, the size of the overlapping area along the first direction is greater than or equal to the first distance; wherein, the first direction is parallel to the cover plate and perpendicular to the first edge; when the display module is in a bent state, the distance between the edges of the cover plate and the display panel on the same side as the first edge shifted along the first direction is the first distance.

[0010] In some embodiments, the cover plate and the spacer block cover the first edge in an orthographic projection of the display panel.

[0011] In some embodiments, one side of the cushion block is fixedly connected to the cover plate, and the other side of the cushion block is slidable relative to the first area.

[0012] In some embodiments, the display panel also includes a third area and a bending area, the third area is located on the side of the first area and / or the second area away from the cover plate, and the bending area connects the first area and the third area; a protective layer is provided on the light-emitting side of the bending area, the protective layer extends into the first area, and the pad is connected to the protective layer.

[0013] In some embodiments, the protective layer includes a protective glue, a lubricating layer is provided between the protective glue and the cushion block, and the lubricating layer is configured to reduce friction when the protective glue and the cushion block slide relative to each other.

[0014] In some embodiments, the lubricating layer is a grease layer.

[0015] In some embodiments, the display module is a flexible display module, one side of the cushion block and the cover plate can slide relative to each other, and the other side of the cushion block is fixedly connected to the first area.

[0016] On the other hand, a display device is provided, comprising the display module.

[0017] In some embodiments, the display device also includes a frame, which at least partially surrounds the display module, and the frame includes a lap wall, which is lapped on a side of the cover plate away from the display panel; the lap wall is located within the lap area in part or all of the area of ​​the positive projection of the display panel.

[0018] In some embodiments, the overlapping wall includes an outer wall close to the center of the display module and an inner wall away from the center of the display module, and the overlapping area includes a first edge close to the center of the display module and a second edge away from the center of the display module; when the display module is in a flattened state, the distance between the outer wall and the first edge along the first direction is greater than or equal to the first distance, and / or the distance between the inner wall and the second edge along the first direction is greater than or equal to the first distance.

[0019] The display module and display device provided by the embodiment of the present disclosure include a display panel, a functional layer, a cover plate and a pad block. The display panel includes a first area and a second area connected to the first area. The first area is located at the first edge of the display panel, and the second area includes a display area. The functional layer is located on the light-emitting side of the display panel, and the orthographic projection of the functional layer on the display panel is located in the second area. The cover plate is located on the side of the functional layer away from the display panel, and the orthographic projection of the cover plate on the display panel at least partially covers the first area. At least part of the area of ​​the pad block is located between the cover plate and the first area, and the first side of the pad block is connected to the cover plate, and the second side of the pad block is connected to the first area. Since at least part of the area of ​​the pad block is located between the cover plate and the first area, the area of ​​the cover plate opposite to the pad block is no longer suspended under the support of the pad block, and it is not easy to break or bend when the area of ​​the cover plate opposite to the pad block is subjected to force. Therefore, the overlapping wall can overlap the area of ​​the cover plate opposite to the pad block, so that the width of the frame is reduced and the screen ratio of the display device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present disclosure 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, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 The front view structure of a display device is schematically shown;

[0022] Figure 2 for Figure 1 The cross-sectional rotation diagram about AA in the figure;

[0023] Figure 3 A partial cross-sectional view of a display module is schematically shown;

[0024] Figure 4 A cross-sectional view of a display module when flattened is schematically shown;

[0025] Figure 5 A cross-sectional view of a display module when folded outward is schematically shown;

[0026] Figure 6 A partial cross-sectional view of a display device in the related art;

[0027] Figure 7 A partial cross-sectional view of a frame is schematically shown;

[0028] Figure 8 schematically shows a cross-sectional view of a display device;

[0029] Fig. 9 A cover plate assembly is schematically shown;

[0030] Fig.10 A cross-sectional view of a cover plate assembly is schematically shown;

[0031] Fig.11 The assembly view of the cover plate assembly is schematically shown.

[0032] Reference numerals:

[0033] 100-display device;

[0034] 110-display module; 110a-upper display screen; 110b-lower display screen;

[0035] 111-display panel;

[0036] 10-functional layer; 112-polarizing layer; 113-optical adhesive layer;

[0037] 20-support layer; 117-back film; 118-support frame; 119-PET layer;

[0038] 114-cover plate;

[0039] 115- pad; 115a- adhesive; 115b- lubricating layer;

[0040] 116-protective layer;

[0041] 120 - frame; 121 - overlapping wall; 121a - outer wall; 121b - inner wall. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0043] In the embodiments of the present disclosure, words such as "first", "second", "third", and "fourth" are used to distinguish between identical or similar items with substantially the same functions and effects. This is only for the purpose of clearly describing the technical solutions of the embodiments of the present disclosure and shall not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0044] In the embodiments of the present disclosure, “plurality” means two or more than two, and “at least one” means one or more than one, unless otherwise clearly and specifically defined.

[0045] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper" and "lower" etc. is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0046] Figure 1 The front view structure of a display device 100 is schematically shown. Figure 1 As shown, some embodiments of the present disclosure provide a display device 100, which can be any device that displays whether it is moving (e.g., video) or fixed (e.g., still image) and whether it is text or image. More specifically, it is expected that the embodiments can be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, video cameras, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controls and / or displays, displays of camera views (e.g., displays of rear-view cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures (e.g., displays of images of a piece of jewelry), etc. Figure 1 In the figure, the display device 100 is taken as an example of a mobile phone.

[0047] Figure 2 for Figure 1 The cross-sectional rotation diagram about A in . Figure 2 As shown, the display device 100 may include a display module 110 and a frame 120. The frame 120 includes a lap wall 121, and the lap wall 121 is lapped on the light-emitting side of the display module 110. Lapping means that the end of the lap wall 121 facing the display module 110 is directly connected to the display module 110, and the lap wall 121 and the display module 110 may be fixedly connected (for example, bonded), or the lap wall 121 and the display module 110 may be slidably connected (for example, the lap wall 121 and the display module 110 may slide relative to each other).

[0048] Among them, the display module 110 can emit light when working, and the user's eyes receive the light emitted by the display module 110 to watch the image displayed by the display module 110. The light-emitting side of the display module 110 refers to the side of the display module 110 from which light is emitted, and the backlight side of the display module 110 refers to the side of the display module 110 that is opposite to the light-emitting side. Similarly, the light-emitting side of the display panel 111 refers to the side of the display panel 111 from which light is emitted, and the backlight side of the display panel 111 refers to the side of the display panel 111 that is opposite to the light-emitting side. The light-emitting side is used to distinguish different areas of the display module 110 or the display panel 111, and does not mean that all areas of the light-emitting side can emit light.

[0049] Exemplarily, the frame 120 extends along the periphery of the display module 110 and at least partially surrounds the display module 110. For example, the frame 120 surrounds the display module 110, and the overlapping wall 121 can also surround the periphery of the display module 110 to form a circle.

[0050] In actual application, the display device 100 may further include a rear shell, which is opposite to and spaced from the display module 110, so that the display module 110, the frame 120 and the rear shell together form a receiving cavity, and components such as the battery and mainboard of the display device 100 can be arranged in the receiving cavity.

[0051] Figure 3 A partial cross-sectional view of a display module is schematically shown. Figure 2 and Figure 3 As shown, the display module 110 may include a display panel 111 and a functional layer 10 and a cover plate 114 sequentially stacked on the display panel 111 .

[0052] The display panel 111 may be a liquid crystal display panel (LCD); the display panel 111 may also be an electroluminescent display panel or a photoluminescent display panel. When the display panel 111 is an electroluminescent display panel, the electroluminescent display panel may be an organic light-emitting diode (OLED) display panel or a quantum dot light-emitting diode (QLED) display panel. When the display panel 111 is a photoluminescent display panel, the photoluminescent display device 100 may be a quantum dot photoluminescent display panel.

[0053] Some embodiments of the present disclosure are described by taking the display panel 111 as an organic light-emitting diode (OLED) display panel as an example.

[0054] The display panel 111 may include a substrate, a circuit layer and a light emitting device layer, wherein the circuit layer includes a pixel driving circuit, the light emitting device layer includes a plurality of light emitting devices, and the pixel driving circuit is electrically connected to the light emitting devices to drive the light emitting devices to emit light.

[0055] The substrate may be a rigid substrate or a flexible substrate. When the substrate is a flexible substrate, the display panel 111 may be a flexible display panel.

[0056] Exemplarily, the substrate is a rigid substrate, for example, a glass substrate or a PMMA (Polymethyl methacrylate) substrate.

[0057] Exemplarily, the substrate may be a flexible substrate, such as a PET (Polyethyleneterephthalate) substrate, a PEN (Polyethylenenaphthalate twoformic acid glycol ester) substrate, or a PI (Polyimide) substrate.

[0058] The display panel 111 includes a first edge b. Figure 1 As shown, the first edge b is the lower edge.

[0059] like Figure 3 As shown, the display panel 111 may include a first area A1 located at a first edge b and a second area A2 connected to the first area A1.

[0060] Exemplarily, the first area A1 includes a binding area, and a flexible printed circuit (FPC) can be bound to the display panel 111 in the binding area.

[0061] For example, continue to refer to Figure 3 When the display panel 111 is a flexible display panel, the display panel 111 also includes a third area A3 and a bending area A4. The third area A3 is located on the side of the first area A1 and / or the second area A2 away from the cover plate 114. The bending area A4 connects the first area A1 and the third area A3, that is, the third area A3 is bent to the backlight side of the first area A1 and / or the second area A2 through the bending area A4.

[0062] For example, when the display panel 111 is in a flat state, the display panel 111 includes a third area A3, a bending area A4, a first area A1, and a second area A2 arranged in sequence. Since the display panel 111 is a flexible display panel 111, after the bending area A4 is bent 180°, the third area A3 is located on the backlight side of the first area A1 and / or the second area A2.

[0063] The third area A3 may include a binding area, and the flexible circuit board and / or IC may be bound to the display panel 111 in the binding area. The bending area A4 may not include a light-emitting device layer to reduce the thickness of the bending area A4 and facilitate bending. The third area A3 and the first area A1 may also not include a light-emitting device layer.

[0064] The second area A2 may include a display area AA and a non-display area NA. The display area AA is used to display images, and the non-display area NA may be provided with circuit structures such as scanning circuits and fan-out wiring.

[0065] Continue to refer Figure 2 and Figure 3 The functional layer 10 is located at the light-emitting side of the display panel 111 , and the orthographic projection of the functional layer 10 on the display panel 111 is located in the second area A2 . Exemplarily, the functional layer 10 includes a polarizing layer 112 and an optical adhesive layer 113 .

[0066] The cover plate 114 is located on the side of the functional layer 10 away from the display panel 111, and is used to protect the functional layer 10 and the display panel 111, and prevent the functional layer 10 and the display panel 111 from being scratched. The cover plate 114 can be a rigid cover plate or a flexible cover plate, and can be a single-layer structure or a multi-layer structure formed by stacking multiple film layers. When the display module 110 is a flexible display module, the cover plate 114 is a flexible cover plate. For example, when the cover plate is a single-layer structure, the cover plate 114 can be a glass cover plate with a relatively thin thickness, and the cover plate 114 can also be a single-layer transparent polymer layer such as a single-layer PI or a single-layer PET; when the cover plate is a multi-layer structure, in the direction away from the substrate, the cover plate 114 includes a first organic layer, an ultra-thin glass layer, and a second organic layer stacked in sequence, wherein the adjacent two layers are optically bonded, and the first organic layer and the second organic layer are transparent organic materials.

[0067] When the cover plate 114 is a flexible cover plate and the substrate is a flexible substrate, the display module 110 can be a flexible display module. At this time, the display module in the display device 100 can be folded, so that the display device 100 is a foldable display device, for example, when the display device 100 is in A mode, the display module is folded along the axis in the display area AA, and when the display device 100 is in B mode, the display module is flattened to make the display area AA straight; the display module in the display device 100 can also be rolled, so that the display device 100 is a slidable display device, for example, when the display device 100 is in C mode, at least part of the area of ​​the display module is rolled up and stored in the accommodating cavity, and when the display device 100 is in D mode, the rolled part of the display module extends from the accommodating cavity and flattens, thereby increasing the display area that can be viewed by the user. Of course, the display device 100 can also be other structural forms, as long as the display module can be switched between the bent state and the flattened state in the display device 100. The following is only a schematic description of the display device 100 as a foldable display device as an example.

[0068] The bent state of the display module refers to that the display area AA of the display module is bent, so that the light emitting surface of the display module is a curved surface. For example, the display device 100 is a foldable display device, and the display module is in a bent state in the A mode; the display device 100 is a rollable display device, and the display module is in a bent state in the C mode.

[0069] The flattened state of the display module means that the display area AA of the display module is in a flat state, so that the light emitting surface of the display module is a plane. For example, the display device 100 is a foldable display device, and the display module is in a flat state in the B mode; the display device 100 is a rollable display device, and the display module is in a flat state in the D mode.

[0070] For example, continue to refer to Figure 1 The display module 110 can be folded along the axis a, the area above the axis a is the upper display screen 110a, and the area below the axis a is the lower display screen 110b.

[0071] The display module 110 can be folded inwards or outwards when folded, which is not limited in the embodiments of the present disclosure. Inward folding means that the light-emitting sides of the upper display screen 110a and the lower display screen 110b are opposite to each other after folding, and outward folding means that the light-emitting sides of the upper display screen 110a and the lower display screen 110b are opposite to each other after folding.

[0072] Figure 4 Schematically shows a cross-sectional view of a display module when it is flattened. Figure 5 A cross-sectional view of a display module when folded outward is schematically shown. In the figure, the X direction is a first direction, which is parallel to the cover plate 114 and perpendicular to the first edge b. For the convenience of illustration, Figure 4 and Figure 5Only the cover plate 114 and the display panel 111 are shown, and other film layer structures are omitted. Figure 4 and Figure 5 As shown, when the display module 110 is folded outward, the bending radius R of the cover plate 114 is larger than the bending radius r of the display panel 111 , so that a relative displacement occurs between the cover plate 114 and the display panel 111 during the bending process.

[0073] For example, when the display module 110 is in a flat state, the edges of the cover plate 114 and the display panel 111 on the same side are flush. When the display module 110 is in a bent state, the distance between the edges of the cover plate 114 and the display panel 111 on the same side as the first edge b is offset along the first direction as a first distance c. The first distance c is related to factors such as the bending radius R of the cover plate 114 and the bending radius r of the display panel 111. The greater the difference between the bending radius R of the cover plate 114 and the bending radius r of the display panel 111, the greater the first distance c.

[0074] The cover plate 114 covers the second area A2 and at least partially covers the first area A1 in its orthographic projection on the display panel 111. That is, part of the cover plate 114 is arranged opposite to the first area A1, and part of the cover plate 114 is arranged opposite to the second area A2. Since the functional layer 10 is located in the second area A2 and has a certain thickness, the area of ​​the cover plate 114 arranged opposite to the first area A1 is suspended.

[0075] When the cover plate 114 is a rigid cover plate, the suspended area of ​​the cover plate 114 is prone to breakage when subjected to force; when the cover plate 114 is a flexible cover plate, the suspended area of ​​the cover plate 114 is prone to bend when subjected to force.

[0076] Figure 6 FIG. 1 is a partial cross-sectional view of a display device in the related art. Figure 6 As shown, in order to prevent the overlapping of the overlapping wall 3 and the suspended area of ​​the cover plate 1 from causing the suspended area to break or bend, the overlapping wall 3 needs to overlap the non-suspended area of ​​the cover plate 1, that is, the area where the functional layer 2 is supported on the side of the cover plate 1 facing the display panel. However, the overlapping wall 3 overlaps the non-hollow area of ​​the cover plate 1, so that the frame along the Figure 4 The horizontal dimension w1 shown is relatively large, which increases the width of the frame and reduces the screen-to-body ratio of the display device.

[0077] In addition, when the display device is a foldable display device (for example, an outward-folding display device), in order to prevent the overlapping of the overlapping wall 3 and the suspended area of ​​the cover plate 1 during the folding of the display device, at least a first distance c needs to be reserved between the overlapping wall 3 and the functional layer 2, so that the width w1 of the frame is further increased, thereby reducing the screen-to-body ratio of the display device.

[0078] In view of this, if Figure 2 and Figure 3As shown, the display module 110 in the embodiment of the present disclosure also includes a pad 115, at least a portion of the pad 115 is located between the cover plate 114 and the first area A1, and the first side of the pad 115 is connected to the cover plate 114, and the second side of the pad 115 is connected to the first area A1. Since at least a portion of the pad 115 is located between the cover plate 114 and the first area A1, the area of ​​the cover plate 114 opposite to the pad 115 is no longer suspended under the support of the pad 115, and when the area of ​​the cover plate 114 opposite to the pad 115 is subjected to force, it is not easy to break or bend. Therefore, the overlapping wall 121 can overlap the area of ​​the cover plate 114 opposite to the pad 115, so that the width w2 of the frame 120 is reduced, and the screen-to-body ratio of the display device 100 is improved.

[0079] The embodiment of the present disclosure does not limit the thickness of the pad 115 along the Y direction shown in the figure. Exemplarily, at least a portion of the pad 115 is located between the first area A1 and the cover plate 114, so that the cover plate 114 is flat as a whole.

[0080] The disclosed embodiment does not limit the material of the cushion block 115. For example, the cushion block 115 is made of polyethylene terephthalate (PET).

[0081] The display device 100 and the display module 110 in the embodiment of the present disclosure are described in detail below by taking the display device 100 being a foldable display device 100 and the display module 110 being a flexible display module as an example.

[0082] Continue to refer Figure 2 and Figure 3 , when the display module 110 is in a flattened state, a gap g is provided between the pad 115 and the functional layer 10. On the one hand, in the process of preparing the display module 110, the gap g is provided between the pad 115 and the functional layer 10 to prevent the pad 115 and the functional layer 10 from interfering with each other due to processing or assembly errors. On the other hand, when the pad 115 is fixedly connected to the cover plate 114, when the display module 110 is folded outward, the pad 115 moves relative to the display panel 111 following the cover plate 114, and the gap g is provided between the pad 115 and the functional layer 10 to prevent the pad 115 from interfering with the functional layer 10 during the movement relative to the display panel 111.

[0083] Exemplarily, when the display module 110 is in a flat state, the dimension d1 of the gap g along the first direction X is greater than or equal to the first distance layer c, which can prevent the spacer 115 from interfering with the functional layer 10 when the spacer 115 moves relative to the display panel 111 .

[0084] Of course, the gap g between the cushion block 115 and the functional layer 10 may also be smaller than the first distance c, and can be flexibly set according to actual conditions in practical applications.

[0085] Continue to refer Figure 2 A support layer 20 may be provided on the side of the first area A1 away from the cover plate 114, and the support layer 20 is configured to support the first area A1. When the display panel 111 is a flexible display panel 111, a support layer 20 may be provided on the side of the first area A1 away from the cover plate 114, and the support layer 20 has a certain rigidity, and can support the first area A1 to prevent the first area A1 from being deformed.

[0086] Exemplarily, a support layer 20 is disposed on a side of the first area A1 and a side of the second area A2 away from the cover plate 114 .

[0087] The support layer 20 may be a single-layer structure or a stacked multi-layer structure.

[0088] Exemplarily, along the direction away from the cover plate 114 , the support layer 20 includes a back film 117 (Back Film), a support frame 118 (Bracket) and a PET layer 119 in sequence.

[0089] Exemplarily, when the display panel 111 includes the third area A3, in a direction from the first area A1 to the third area A3, a back film 117, a support frame 118, a PET layer 119 and a back film 117 are sequentially disposed between the first area A1 and the third area A3.

[0090] The overlapping area of ​​the support layer 20, the cushion block 115 and the cover plate 114 in the orthographic projection of the display panel 111 is the overlap area, and the cover plate 114 located in the overlap area is configured to overlap with the frame 120 of the display device 100. The cushion block 115 and the cover plate 114 located in the overlap area are not easily deformed under the support of the support layer 20, and can be used to overlap with the overlap wall 121. Since the overlap area is closer to the edge than the second area A2, the width w2 of the frame 120 can be reduced, and the screen ratio of the display device 100 can be improved.

[0091] Part or all of the area of ​​the orthographic projection of the overlapping wall 121 on the display panel 111 is located in the overlapping area, so as to prevent the cover plate 114 in the overlapping area from being broken or bent under the pressure of the overlapping wall 121 .

[0092] The dimension d2 of the overlapping area along the first direction X may be greater than or equal to the first distance c, so as to prevent the overlapping wall 121 from being separated from the overlapping area due to relative displacement between the cover plate 114 and the display panel 111 during the folding process of the display device 100 .

[0093] Figure 7 A partial cross-sectional view of a frame is schematically shown. Figure 8 A cross-sectional view of a display device is schematically shown. Figure 7 and Figure 8As shown, the overlapping wall 121 includes an outer wall 121 a close to the center of the display module 110 and an inner wall 121 b away from the center of the display module 110 , and the overlapping area includes a first side close to the center of the display module 110 and a second side away from the center of the display module 110 .

[0094] When the display module 110 is in a flat state, the distance d4 between the inner wall 121b and the second edge along the first direction X may be greater than or equal to the first distance c. When the display module 110 is folded outward, the cover plate 114 is displaced rightward by the first distance c along the first direction X relative to the display panel 111, and the outer wall 121a is still within the overlap area.

[0095] Similarly, when the display module 110 is in a flat state, the distance d3 between the outer wall 121a and the first edge in the first direction X may be greater than or equal to the first distance c. At this time, when the display module 110 is folded inward, the inner wall 121b is still within the overlap area.

[0096] Continue to refer Figure 8 Since the overlapping wall 121 does not need to overlap in the second area A2, the display panel 111 can adopt the design of the FIP narrow frame 120, so that the area of ​​the display area A in the second area A2 of the display panel 111 is further increased, thereby reducing the width of the black borders around the display panel 111.

[0097] Continue to refer Figure 2 and Figure 3 , the orthographic projections of the cover plate 114 and the cushion block 115 on the display panel 111 cover the first edge b. The term "covering" means covering the first edge b along the first direction X, i.e., the edges of the cover plate 114 and the cushion block 115 protrude relative to the first edge b, which can increase the area of ​​the overlapped region and make the overlapped region closer to the first edge b, thereby reducing the width of the frame 120 and improving the screen-to-body ratio of the display device 100.

[0098] When one side of the cushion block 115 is fixedly connected to the cover plate 114, and the other side of the cushion block 115 is fixedly connected to the first area A1, during the bending process of the display module 110, the cover plate 114 and the display panel 111 will be relatively displaced, so that the cover plate 114 and the display panel 111 are easily wrinkled under the influence of the cushion block 115. Therefore, the cushion block 115 can be fixedly connected to one of the cover plate 114 and the display panel 111, and slidably connected to the other, so as to prevent the cover plate 114 and the display panel 111 from being wrinkled due to the influence of the cushion block 115 during the displacement process.

[0099] First, one side of the cushion block 115 is fixedly connected to the cover plate 114, and the other side of the cushion block 115 is slidably connected to the first area A1. The cushion block 115 is fixedly connected to the cover plate 114, and during the bending process of the display module 110, the cover plate 114 and the cushion block 115 remain relatively still, and the cover plate 114 drives the cushion block 115 to shift relative to the display panel 111.

[0100] When preparing the display module 110 , the cover plate 114 and the spacer block 115 may be integrated into one piece, so as to reduce the number of steps in preparing the display module 110 . Fig. 9 A cover plate 114 assembly is schematically shown. Fig.10 A cross-sectional view of a cover plate 114 assembly is schematically shown. Fig. 9 and Fig.10 As shown, the cover plate 114 and the cushion block 115 are an integrated structure, and the cushion block 115 is located at the edge of the cover plate 114 to form a cover plate 114 assembly.

[0101] Fig.11 The assembly diagram of the cover plate assembly is schematically shown. Fig.11 As shown, during the preparation of the display module 110 , the cover plate 114 assembly can be bonded onto the functional layer 10 as a whole, so that the spacer 115 is connected to the first area A1 .

[0102] Exemplarily, the cover plate 114 and the cushion block 115 are fixedly connected by bonding. For example, a bonding glue 115a is provided between the cushion block 115 and the cover plate 114. Of course, the cover plate 114 and the cushion block 115 can also be fixedly connected by other means, which is not limited in the embodiments of the present disclosure.

[0103] A protective layer 116 may be provided on the light-emitting side of the bending area A4, the protective layer 116 extends into the first area A1, and the pad 115 is connected to the protective layer 116. The protective layer 116 covers the surface of the bending area A4 and is configured to protect the wiring in the bending area A4.

[0104] The protective layer 116 may include protective glue. For example, the protective glue is MCL glue. The MCL glue is soft in texture and is easy to bend when applied to the bending area A4. It can also protect the bending area A4 and prevent the wiring in the bending area A4 from being scratched.

[0105] The protective glue has a certain viscosity, so that the pad 115 and the protective glue are easily bonded, resulting in wrinkles when the cover plate 114 and the display panel 111 are relatively displaced. Fig.10A lubricating layer 115b may be provided between the protective glue and the pad 115, and the lubricating layer 115b is configured to reduce the friction force when the protective glue and the pad 115 slide relative to each other, so that when the pad 115 follows the cover plate 114 to move relative to the display panel 111, the force between the pad 115 and the protective glue is reduced.

[0106] Exemplarily, a lubricating layer 115 b is provided on a side of the cushion block 115 away from the cover plate 114 , that is, the lubricating layer 115 b serves as a film structure of the cover plate 114 component.

[0107] The lubricating layer 115 b may be a coating provided on the side of the cushion block 115 facing the display panel 111 , or may be a film layer obtained by processing the surface of the cushion block 115 facing the display panel 111 .

[0108] When the lubricating layer 115b is a coating provided on the side of the pad 115 facing the display panel 111, the lubricating layer 115b may be a grease layer having good fluidity and lubricity, which can prevent the pad 115 and the protective adhesive from adhering to each other and can reduce the friction between the protective adhesive and the pad 115, thereby making it easier for the pad 115 and the protective adhesive to move relative to each other.

[0109] The lubricating layer 115b may also be a film layer of other materials, such as polytetrafluoroethylene. The embodiment of the present disclosure does not limit the material of the lubricating layer 115b, as long as it can reduce the friction between the pad 115 and the protective glue.

[0110] When the lubricating layer 115b is a film layer obtained by treating the surface of the side of the pad 115 facing the display panel 111, the surface of the side of the pad 115 facing the display panel 111 may be treated to reduce the adhesion between the protective glue and the pad 115, for example, to improve the smoothness of the side of the pad 115 facing the display panel 111.

[0111] Next, one side of the cushion block 115 can slide relative to the cover plate 114, and the other side of the cushion block 115 is fixedly connected to the first area A1. During the bending process of the display module 110, the cushion block 115 and the display panel 111 are relatively stationary, and the cover plate 114 moves relative to the cushion block 115 and the display panel 111.

[0112] The pad 115 can be fixedly connected to the first area A1 by bonding. For example, when a protective adhesive is provided on the surface of the bending area A4, one side of the pad 115 can be directly bonded to the protective adhesive. The pad 115 is fixedly connected to the display panel 111 by the protective adhesive without the need for additional adhesive 115a, thereby reducing the number of film layers and material types of the display module 110.

[0113] The other side of the pad 115 can be slidably connected to the cover plate 114 in various forms, such as direct contact between the pad 115 and the cover plate 114, or a contact layer between the pad 115 and the cover plate 114. When the pad 115 and the cover plate 114 are in direct contact, the number of film layers of the display module 110 can be reduced. When a contact layer is provided between the pad 115 and the cover plate 114, the interaction force between the pad 115 and the cover plate 114 can be reduced.

[0114] The contact layer may be a coating provided on the side of the pad 115 facing the cover plate 114 , or may be a film layer obtained by processing the surface of the side of the pad 115 facing the cover plate 114 .

[0115] When the contact layer is a coating provided on the side of the pad 115 facing the cover plate 114, the contact layer may be a grease layer. The grease layer has good fluidity and lubricity, which can reduce the friction between the cover plate 114 and the pad 115, making it easier for the pad 115 and the cover plate 114 to move relative to each other.

[0116] The contact layer may also be a film layer of other materials, such as polytetrafluoroethylene. The embodiment of the present disclosure does not limit the material of the contact layer, as long as it can reduce the friction between the pad 115 and the protective glue.

[0117] When the contact layer is a film layer obtained by treating the surface of the pad 115 facing the cover plate 114, the surface of the pad 115 facing the cover plate 114 may be surface treated to reduce the friction between the cover plate 114 and the pad 115, for example, to improve the smoothness of the pad 115 facing the cover plate 114.

[0118] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display module, characterized in that: include: The display panel comprises a first area and a second area connected to the first area, wherein the first area is located at a first edge of the display panel, and the second area comprises a display area; a functional layer, located at the light-emitting side of the display panel, and an orthographic projection of the functional layer on the display panel is located within the second area; a cover plate, located at a side of the functional layer away from the display panel, wherein the orthographic projection of the cover plate on the display panel at least partially covers the first area; A pad block, at least a portion of which is located between the cover plate and the first region, a first side of the pad block is connected to the cover plate, and a second side of the pad block is connected to the first region.

2. The display module according to claim 1, characterized in that: The display module is a flexible display module. When the display module is in a flattened state, a gap is provided between the cushion block and the functional layer.

3. The display module according to claim 2, characterized in that: When the display module is in a flattened state, the size of the gap along the first direction is greater than or equal to the first distance; Among them, the first direction is parallel to the cover plate and perpendicular to the first edge; when the display module is in a bent state, the distance along the first direction that the edges of the cover plate and the display panel on the same side as the first edge are offset is the first distance.

4. The display module according to claim 1, characterized in that: The display module is a flexible display module, and a supporting layer is provided on a side of the first area away from the cover plate, and the supporting layer is configured to support the first area; the overlapping area of ​​the supporting layer, the pad and the cover plate in the orthographic projection of the display panel is a overlapping area, and the cover plate located in the overlapping area is configured to overlap with the frame of the display device.

5. The display module according to claim 4, characterized in that: The dimension of the overlapping area along the first direction is greater than or equal to the first distance; Among them, the first direction is parallel to the cover plate and perpendicular to the first edge; when the display module is in a bent state, the distance along the first direction that the edges of the cover plate and the display panel on the same side as the first edge are offset is the first distance.

6. The display module according to claim 1, characterized in that: The cover plate and the spacer block have an orthographic projection on the display panel covering the first edge.

7. The display module according to any one of claims 1 to 6, characterized in that: The display module is a flexible display module. One side of the cushion block is fixedly connected to the cover plate, and the other side of the cushion block is slidable relative to the first area.

8. The display module according to claim 7, characterized in that: The display panel further includes a third area and a bending area, the third area is located on a side of the first area and / or the second area away from the cover plate, and the bending area connects the first area and the third area; A protective layer is provided on the light-emitting side of the bending region, the protective layer extends into the first region, and the pad is connected to the protective layer.

9. The display module according to claim 8, characterized in that: The protective layer includes a protective glue, and a lubricating layer is provided between the protective glue and the cushion block, and the lubricating layer is configured to reduce the friction force when the protective glue and the cushion block slide relative to each other.

10. The display module according to claim 9, characterized in that: The lubricating layer is a grease layer.

11. The display module according to claim 1, characterized in that: The display module is a flexible display module, one side of the cushion block and the cover plate can slide relative to each other, and the other side of the cushion block is fixedly connected to the first area.

12. A display device, characterized in that: Comprising the display module as claimed in any one of claims 1 to 11.

13. The display device according to claim 12, characterized in that: The display device also includes a frame, which at least partially surrounds the display module. The frame includes an overlapping wall, which is overlapped on a side of the cover plate away from the display panel; the overlapping wall is located in a partial or entire area of ​​the orthographic projection of the display panel within the overlapping area.

14. The display device according to claim 13, characterized in that: The overlapping wall includes an outer wall close to the center of the display module and an inner wall away from the center of the display module, and the overlapping area includes a first side close to the center of the display module and a second side away from the center of the display module; When the display module is in a flattened state, the distance between the outer wall and the first edge in the first direction is greater than or equal to a first distance, and / or the distance between the inner wall and the second edge in the first direction is greater than or equal to the first distance.

Images