Display module and display equipment

Abstract

The invention provides a display module and a display device. The display module comprises a flat panel display area and a curved surface display area. The curved surface display area at least partially surrounds the plane display area; the curved surface display area comprises an arc edge area; the display module comprises a display screen body and a supporting film which are arranged in a stacked mode. The display screen body and the supporting film are respectively provided with a plurality of open grooves in the arc-edge area. Therefore, the extrusion stress during fitting can be released by utilizing the slot of the display screen body and the slot of the supporting film, wrinkles are prevented from being formed, meanwhile, the slot of the supporting film can reduce the size of the slot of the display screen body, the space for releasing the stress and the maximum display area of the display screen body are ensured, and the display effect is effectively 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, curved display modules are becoming more and more popular because of their more extreme visual experience. However, the existing flexible screens used in conjunction with curved cover plates are flat and cannot be stretched and deformed during the bonding process, which results in wrinkles during bonding and reduces the display effect. Summary of the invention

[0003] In view of this, the present application is dedicated to providing a display module and a display device, which can avoid wrinkles caused by lamination and improve the display effect.

[0004] In a first aspect, the present application provides a display module, comprising a flat display area and a curved display area; the curved display area at least partially surrounds the flat display area; the curved display area comprises an arc edge area;

[0005] The display module comprises a display screen body and a supporting film which are stacked;

[0006] The display screen body and the support film are respectively provided with a plurality of grooves in the arc edge area.

[0007] Optionally, an edge line of the arc edge area on a side away from the plane display area is an arc edge line;

[0008] The plurality of slots are distributed along the arc edge line, and the area of ​​the orthographic projection of the slots on the substrate of the display screen is negatively correlated with the distance between the slot position and the center line of the arc edge line.

[0009] Optionally, the depth of the groove is negatively correlated with the distance between the groove position and the center line of the arc edge line;

[0010] And / or, the width of the slot is negatively correlated with the distance between the slot position and the center line of the arc edge line;

[0011] Among them, the length of the groove in the first direction is the depth of the groove, and the length in the second direction is the width of the groove; the first direction is the extension direction of the groove; the second direction is perpendicular to the first direction, and the plane where the second direction and the first direction are located is parallel to the plane where the display screen is located.

[0012] Optionally, the plurality of slots include a first slot located on the centerline;

[0013] The depth of the first groove has a value range of 50 to 1500 μm; the width of the first groove has a value range of 17 to 300 μm.

[0014] Optionally, the plurality of slots are arranged in a direction away from the center line, and the distance between the slots and the center line is positively correlated with the arrangement pitch of the slots.

[0015] Optionally, the plurality of grooves of the display screen body in the arc edge area are a plurality of first sub-grooves; the plurality of grooves of the support film in the arc edge area are second sub-grooves;

[0016] A plurality of the first sub-grooves correspond one-to-one to a plurality of the second sub-grooves, the first sub-grooves are connected to the corresponding second sub-grooves, and the orthographic projections of the first sub-grooves on the substrate of the display screen partially overlap with the orthographic projections of the corresponding second sub-grooves on the substrate.

[0017] Optionally, a distance between the first sub-grooves and the second sub-grooves that are connected to each other in a direction parallel to the substrate is a first distance;

[0018] The value range of the first distance includes 20 to 200 μm; the first distance is smaller than the width of the groove.

[0019] Optionally, a polarizer is also included;

[0020] The polarizer is located on a side of the display screen body away from the supporting film.

[0021] Optionally, a cover plate is also included;

[0022] The cover plate is located on a side of the polarizer away from the display screen.

[0023] Optionally, a projection shape of the groove on the substrate of the display screen includes at least one of a rectangle, a trapezoid, an ellipse and a triangle.

[0024] In a second aspect, the present application further provides a display device, comprising the display module as described in the first aspect of the present application.

[0025] In the solution of the present application, the display module includes a flat display area and a curved display area; the curved display area at least partially surrounds the flat display area; the curved display area includes an arc edge area; the display module includes a stacked display body and a support film; the display body and the support film are respectively provided with a plurality of grooves in the arc edge area. In this way, the grooves of the display body and the support film can be used to release the extrusion stress during lamination to avoid the formation of wrinkles. At the same time, the grooves of the support film can reduce the volume of the grooves of the display body, ensure the space for releasing stress, and the maximum display area of ​​the display body, thereby effectively improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0027] Figure 1 This is a schematic diagram of a planar structure of a display module provided by an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the planar structure of an arc edge area of ​​a display module provided by an embodiment of the present application;

[0029] Figure 3 is a schematic cross-sectional structure diagram of an arc edge region of a display module provided by an embodiment of the present application;

[0030] Figure 4 is a schematic diagram of a planar structure of an arc edge area of ​​a display module provided by another embodiment of the present application;

[0031] Figure 5 is a schematic diagram of a planar structure of an arc edge area of ​​a display module provided by another embodiment of the present application;

[0032] Figure 6 is a schematic diagram of a planar structure of an arc edge area of ​​a display module provided by another embodiment of the present application;

[0033] Figure 7 is a schematic diagram of a planar structure of an arc edge area of ​​a display module provided by another embodiment of the present application;

[0034] Figure 8 is a schematic cross-sectional structure diagram of an arc edge region of a display module provided by another embodiment of the present application;

[0035] Fig. 9 is a schematic cross-sectional structure diagram of an arc edge region of a display module provided by another embodiment of the present application;

[0036] Fig.10 It is a schematic diagram of the structure of a display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0037] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0038] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0039] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0040] At present, more and more display devices are required to achieve visual borderless design, such as mobile phones, phone watches, etc. Correspondingly, curved display products have also emerged, such as four-curved display screens and five-curved display screens, etc. However, while the curved display screen brings a good visual experience, there is also the problem of how to better fit the cover plate.

[0041] The existing flexible screen body used in conjunction with the cover plate is flat and cannot be stretched and deformed during the bonding process, resulting in wrinkles when bonding. Taking the four-curved display module and the five-curved display module as an example, the problem of curved wrinkles at the junction of two adjacent frames has always been a difficulty in the development of four-curved and five-curved technologies.

[0042] Currently, the wrinkles caused by the bending of the curved surface can be eliminated as much as possible by reducing the curvature. However, the inventors have found that the reduction in curvature will make the corners of the display screen unable to achieve four or five curves in the full sense, but closer to a flat display. This will weaken the good visual experience brought by the curved display and cannot really solve the problem of wrinkles on the curved display module.

[0043] To this end, the present application provides a solution for effectively improving the display effect of a curved screen. For a display module provided with a curved display area and a flat display area, an arc edge area can be set in the curved display area. At the same time, in the arc edge area, a display screen body and a support film of the display module are provided with multiple grooves. In this way, the grooves of the display screen body and the grooves of the support film can be used to release the extrusion stress during bonding to avoid the formation of wrinkles. At the same time, the grooves of the support film can reduce the volume of the grooves of the display screen body, ensure space for releasing stress, and the maximum display area of ​​the display screen body, thereby effectively improving the display effect.

[0044] Specifically, as an optional implementation of the contents disclosed in the present application, an embodiment of the present application provides a display module. Figure 1 is a schematic diagram of a planar structure of a display module provided by an embodiment of the present application, Figure 2 FIG. 1 is a schematic diagram of a planar structure of an arc edge region of a display module provided by an embodiment of the present application. Figure 1 and Figure 2 As shown, the display module may include at least: a flat display area and a curved display area S. The curved display area S is at least partially arranged around the flat display area P; the curved display area S may include an arc edge area S1.

[0045] It should be understood that both the flat display area P and the curved display area S have display functions. The display portion of the flat display area P is flat, and the display portion of the curved display area S is curved.

[0046] The arc edge area S1 is set corresponding to the corner position of the display module, for example, Figure 1 As shown, for the four-curved display module, the number of the arc edge areas S1 is 4, which are respectively arranged at the four corners of the four-curved display module.

[0047] Figure 3 FIG. 1 is a schematic cross-sectional structure diagram of an arc edge region of a display module provided by an embodiment of the present application. Figure 2 and Figure 3 As shown, the display module may include a stacked display screen body Q and a support film T; the display screen body Q and the support film T are respectively provided with a plurality of slots K in the arc edge area S1. The presence of the plurality of slots K can constitute a stress release space, thereby preventing wrinkles from being generated due to inability to withstand stress when the screen body and the cover plate are subsequently attached.

[0048] During implementation, for the arc edge area S1 of the display screen Q and the support film T, a groove design can be made at the edge of the arc edge area S1, and the material in the groove is removed by etching or laser cutting, so as to form a plurality of grooves K.

[0049] In addition, if multiple slots K are only provided in the arc edge area S1 of the display screen body Q, when the area of ​​the multiple slots K is large, the wrinkle absorption effect is better, but the display area will be reduced and the display effect will be reduced; when the area of ​​the multiple slots K is small, although the display effect will be improved, the wrinkle absorption effect will be reduced, which may cause the wrinkles to be unable to be completely absorbed. Compared with only making slots on the display screen body Q, making multiple slots K on the support film T can ensure sufficient stress release space and reduce the area of ​​the slots on the display screen body Q, thereby maximizing the display area and ensuring a better display effect.

[0050] The inventors have found that the arc edge area S1, as the corner area of ​​each edge in the display module, has to withstand a greater bending stress than the bending stress of other areas of the curved display area S. Similarly, in a traditional display module that generates wrinkles, wrinkles are mostly generated in the arc edge area S1, and the closer to the center line of the arc edge line, the more wrinkles there are, and the farther from the center line of the arc edge line, the fewer wrinkles there are.

[0051] The arc edge line refers to the edge line of the arc edge area S1 on the side away from the plane display area P.

[0052] In some embodiments, to further avoid the generation of wrinkles, such as Figure 4 As shown, in the display module, multiple slots K can be distributed along the arc edge line L, and the area of ​​the positive projection of the slot K on the substrate of the display screen is negatively correlated with the distance between the position of the slot K and the center line R of the arc edge line L.

[0053] It should be noted that the larger the area of ​​the orthographic projection of the slot K on the substrate, the larger the volume of the slot K, the larger the corresponding stress release space, and the more bending stress it can withstand. Correspondingly, the closer the center line R is to the arc edge line L, the greater the bending stress the screen body withstands, and the more stress release space is required.

[0054] During implementation, the center line R of the arc edge line L can be used as the starting line, and multiple slots K can be arranged in sequence along the arc edge line L to both sides of the starting line. The larger the distance between the slot K and the center line R of the arc edge line L, the smaller the volume of the slot K; the smaller the distance between the slot K and the center line R of the arc edge line L, the larger the volume of the slot K. In this way, the area close to the center line R of the arc edge line L can have more stress release space, so that it can withstand more bending stress, and further avoid the generation of wrinkles in the arc edge area S1.

[0055] In the display module, such as Figure 4As shown, the length of the groove K in the first direction is the depth a of the groove K, and the length in the second direction is the width b of the groove K; the first direction is the extension direction of the groove K; the second direction is perpendicular to the first direction, and the plane where the second direction and the first direction are located is parallel to the plane where the display screen Q is located.

[0056] It should be understood that since the extension direction of each slot may be different, the first direction and the second direction of the multiple slots may also be different. In other words, the first direction and the second direction of a slot are defined relative to the depth and width of the slot, rather than being a unified direction. Figure 4 As shown, the first direction and the second direction of the slot K11 are x11 and y11 respectively, and the first direction and the second direction of the slot K21 are x21 and y21 respectively.

[0057] In some embodiments, Figure 4 and Figure 5 As shown, the depth a of the slot K is negatively correlated with the distance between the slot K position and the center line R of the arc edge line L. The slot K position can be the center line position of the slot or the edge position of the slot K. Multiple slots K determine the same position through the same direction, such as using the center line position or the edge position on the same side. That is to say, the greater the distance between the slot K and the center line R of the arc edge line L, the smaller the depth a of the slot K; the smaller the distance between the slot K and the center line R of the arc edge line L, the greater the depth a of the slot K. Among them, the slot (the first slot K1) on the center line R of the arc edge line L has the largest depth a.

[0058] Specifically, in order to simplify the process, such as Figure 5 As shown, the width b of all the slots K can be set to be consistent. In this way, the smaller the distance between the slot K and the center line R of the arc edge line L, the greater the depth a of the slot K, the larger the volume of the corresponding slot K, and the larger the space for stress release. This ensures a more balanced arrangement of stress release space to avoid the generation of wrinkles, and can rationalize the size of the slot K, ensure the display area of ​​the display body Q, and improve the display effect.

[0059] Of course, the implementation manner of the present application is only described by taking the example of setting the widths of all the slots K to be consistent, but the present application is not limited to this. In some other implementation manners, the widths of all the slots K may also be inconsistent.

[0060] Specifically, in some embodiments, Figure 4 and Figure 6As shown, the width b of the slot K may be negatively correlated with the distance between the slot K and the center line R of the arc side line L. That is, the greater the distance between the slot K and the center line R of the arc side line L, the smaller the width b of the slot K; the smaller the distance between the slot K and the center line R of the arc side line L, the larger the width b of the slot K. Among them, the width b of the slot (the first slot K1) on the center line R of the arc side line L is the largest.

[0061] In order to simplify the process, Figure 6 As shown, the depth a of all the slots K can be set to be consistent. In this way, the smaller the distance between the slot K and the center line R of the arc edge line L, the larger the width b of the slot K, the larger the volume of the corresponding slot K, and the larger the space for stress release. This ensures a more balanced arrangement of stress release space to avoid the generation of wrinkles, and can rationalize the size of the slot K, ensure the display area of ​​the display body Q, and improve the display effect.

[0062] Of course, the implementation mode of the present application is only described by taking the example of setting the depth of all the grooves K to be consistent, but the present application is not limited to this. In some other implementation modes, the depths of all the grooves K may also be inconsistent.

[0063] Specifically, in some embodiments, Figure 4 As shown, the depth of the slot K is negatively correlated with the distance between the slot K and the center line R of the arc edge line L, and the width of the slot K is negatively correlated with the distance between the slot K and the center line R of the arc edge line L. In other words, the greater the distance between the slot K and the center line R of the arc edge line L, the smaller the width b and depth a of the slot K; the smaller the distance between the slot K and the center line R of the arc edge line L, the larger the width b and depth a of the slot K. Among them, the width b and depth a of the slot on the center line R of the arc edge line L are both the largest. In this way, the size of the slot K corresponds to the distribution of the bending stress. The slot K corresponding to the position with large stress is also larger, and the slot K corresponding to the position with small stress is relatively small, so that the bending stress can be relieved more evenly, and the generation of wrinkles can be further avoided to ensure the display effect.

[0064] In some embodiments, Figure 5 and Figure 6 As shown, the plurality of slots K may include a first slot K1 located on the center line R, ie, the largest slot in the arc side area S1.

[0065] Specifically, the depth a of the first slot K1 may range from 50 to 1500 μm; the width b of the first slot K1 may range from 17 to 300 μm.

[0066] When used, the size of each slot K can be set according to actual needs and is not specifically limited here.

[0067] In some embodiments, Figure 7 As shown, a plurality of slots K are arranged in a direction away from the center line R, and the distance between the slots K and the center line R is positively correlated with the arrangement spacing n of the slots K. In other words, the greater the distance between the slot and the center line R of the arc edge line L, the greater the arrangement spacing n between the slot and the adjacent slots; the smaller the distance between the slot and the center line R of the arc edge line L, the smaller the arrangement spacing n between the slot and the adjacent slots.

[0068] Thus, in the arc edge area S1, the slots K in the area close to the center line R of the arc edge line L will be denser, and the slots K in the area far from the center line R of the arc edge line L will be sparser. The area with denser slots K can bear more bending stress, and the area with sparser slots K can bear less bending stress. The area with denser slots K is set in the area close to the center line R of the arc edge line L, that is, the area that can bear more bending stress is set in the area that needs to bear more bending stress, which further rationalizes the distribution of the slots K and avoids the generation of wrinkles.

[0069] In some embodiments, Figure 8 As shown, the multiple slots K of the display screen body Q in the arc edge area S1 and the multiple slots K of the support film T in the arc edge area S1 are staggered.

[0070] Specifically, the multiple grooves K of the display screen body in the arc edge area are multiple first sub-grooves K2, and the multiple grooves of the support film T in the arc edge area S1 are multiple second sub-grooves K3. The multiple first sub-grooves K2 correspond to the multiple second sub-grooves K3 one by one, the first sub-grooves K2 are connected to the corresponding second sub-grooves K3, and the orthographic projection of the first sub-grooves K2 on the substrate of the display screen body Q partially overlaps with the orthographic projection of the corresponding second sub-grooves K3 on the substrate.

[0071] The first sub-groove K2 is connected to the corresponding second sub-groove K3, and the orthographic projection of the first sub-groove K2 on the substrate of the display screen body Q partially overlaps with the orthographic projection of the corresponding second sub-groove K3 on the substrate, so that a stress release space can be formed between the display screen body Q and the supporting film T, so that when the arc edge area S1 is bent and deformed, it can absorb the peripheral redundancy and avoid the formation of wrinkles.

[0072] Moreover, the first sub-groove K2 is connected with the corresponding second sub-groove K3, and the orthographic projection of the first sub-groove K2 on the substrate of the display screen body Q partially overlaps with the orthographic projection of the corresponding second sub-groove K3 on the substrate, which can effectively avoid excessive concentration of a single stress release space caused by the complete corresponding connection of the grooves K, thereby avoiding excess space and affecting the display effect.

[0073] Specifically, Figure 8 As shown, the distance between the two slots K at the corresponding positions of the display screen Q and the support film T, namely the connected first sub-slot K2 and the second sub-slot K3, in the direction parallel to the substrate is a first distance m.

[0074] The value range of the first distance m may include 20 to 200 μm; the first distance m is smaller than the width b of the slot K.

[0075] In some embodiments, in order to improve the wrinkle absorption effect of the groove K, the orthographic projection shape of the groove K on the substrate of the display screen body Q may include at least one of a rectangle, a trapezoid, an ellipse, and a triangle.

[0076] For example, Figure 4 As shown, the orthographic projection shape of the slot K on the substrate of the display screen body Q is a rectangle.

[0077] It should be noted that when the orthographic projection shape of the slot K is a trapezoid, the upper base is located close to the plane display area, and the lower base is located far away from the plane display area.

[0078] Of course, the present application is only illustrated by taking the example that the orthographic projection shape of the groove K on the substrate of the display screen Q may include at least one of a rectangle, a trapezoid, an ellipse and a triangle, but the present application is not limited to this. In some other embodiments, the orthographic projection shape of the groove K on the substrate of the display screen Q may also be other shapes, such as a semi-ellipse, and so on.

[0079] In some embodiments, Fig. 9 As shown, the display module may further include a polarizer O; the polarizer O is located on a side of the display screen body Q away from the supporting film T.

[0080] By using the polarizer O, the reflection of the external ambient light on the cathode of the display screen can be eliminated, thereby improving the display effect.

[0081] In some embodiments, Fig. 9 As shown, the display module may further include a cover plate G; the cover plate G is located on a side of the polarizer O away from the display screen body Q, and is used to protect the display screen body Q.

[0082] The cover plate may be a curved cover plate, for example, a four-curved cover plate, a five-curved cover plate, etc. Specifically, the shape of the curved cover plate may be set according to the shape of the display screen.

[0083] As an optional implementation of the content disclosed in this application, the embodiment of this application further provides a display device, which includes: a display module provided in any of the above embodiments. Fig.10 As shown, Fig.10 This is a schematic diagram of the structure of a display device provided in one embodiment of the present application. The display device may be a smart phone, a tablet computer, a digital camera, etc., which will not be described in detail here.

[0084] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0085] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be 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 the present application. Therefore, the present application will not be limited to the embodiments shown 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: It comprises a flat display area and a curved display area; the curved display area at least partially surrounds the flat display area; the curved display area comprises an arc edge area; The display module comprises a display screen body and a supporting film which are stacked; The display screen body and the support film are respectively provided with a plurality of grooves in the arc edge area.

2. The display module according to claim 1, characterized in that: The edge line of the arc edge area on the side away from the flat display area is an arc edge line; The plurality of slots are distributed along the arc edge line, and the area of ​​the orthographic projection of the slots on the substrate of the display screen is negatively correlated with the distance between the slot position and the center line of the arc edge line.

3. The display module according to claim 2, characterized in that: The depth of the groove is negatively correlated with the distance between the groove position and the center line of the arc edge line; And / or, the width of the slot is negatively correlated with the distance between the slot position and the center line of the arc edge line; Among them, the length of the groove in the first direction is the depth of the groove, and the length in the second direction is the width of the groove; the first direction is the extension direction of the groove; the second direction is perpendicular to the first direction, and the plane where the second direction and the first direction are located is parallel to the plane where the display screen is located.

4. The display module according to claim 2, characterized in that: The plurality of slots include a first slot located on the centerline; The depth of the first groove has a value range of 50 to 1500 μm; the width of the first groove has a value range of 17 to 300 μm.

5. The display module according to claim 2, characterized in that: The plurality of slots are arranged in a direction away from the center line, and the distance between the slots and the center line is positively correlated with the arrangement pitch of the slots.

6. The display module according to claim 1, characterized in that: The multiple grooves of the display screen in the arc edge area are multiple first sub-grooves; the multiple grooves of the support film in the arc edge area are multiple second sub-grooves; A plurality of the first sub-grooves correspond one-to-one to a plurality of the second sub-grooves, the first sub-grooves are connected to the corresponding second sub-grooves, and the orthographic projections of the first sub-grooves on the substrate of the display screen partially overlap with the orthographic projections of the corresponding second sub-grooves on the substrate.

7. The display module according to claim 6, characterized in that: A distance between the first sub-grooves and the second sub-grooves that are connected to each other in a direction parallel to the substrate is a first distance; The value range of the first distance includes 20 to 200 μm; the first distance is smaller than the width of the groove.

8. The display module according to claim 1, characterized in that: Also includes polarizers; The polarizer is located on a side of the display screen away from the supporting film; Optionally, a cover plate is also included; The cover plate is located on a side of the polarizer away from the display screen.

9. The display module according to claim 1, characterized in that: The projection shape of the groove on the substrate of the display screen body includes at least one of a rectangle, a trapezoid, an ellipse and a triangle.

10. A display device, characterized in that: Comprising a display module as described in any one of claims 1-9.

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