Support plate and flexible display device

Abstract

This invention discloses a support plate and a flexible display device, relating to the field of display technology. The support plate supports a flexible display panel, including a folding region extending along a first direction and a sliding region extending along a second direction, the folding region and the sliding region intersecting to form an overlapping region. Along a plane perpendicular to the support plate, the folding region and the sliding region include openings penetrating the support plate and / or grooves recessed on the surface of the support plate, with a protrusion between two adjacent grooves. The folding region includes a first folding area, and the sliding region includes a first sliding region, the first folding region and the first sliding region do not overlap with the overlapping region. Along the first direction, the side length of the protrusion in the overlapping region is greater than the side length of the protrusion in the first sliding region; and / or, along the second direction, the side length of the protrusion in the overlapping region is greater than the side length of the protrusion in the first folding region; and / or, along the first direction, the inner diameter width of the opening in the overlapping region is smaller than the inner diameter width of the opening in the first folding region.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a support plate and a flexible display device. Background Technology

[0002] As flexible display technology continues to mature, the design of flexible displays with different bending radii and folding shapes is attracting more and more attention. The stacked structure of flexible displays usually includes a support plate for supporting the flexible display screen. In the existing technology, the support plate can only enable the flexible display screen to bend or roll in one direction. There is no support plate that can enable the flexible display screen to bend and / or roll in two or more directions, which affects the development of flexible displays with multiple bending and / or rolling directions. Summary of the Invention

[0003] In view of this, the present invention provides a support plate and a flexible display device to improve the problem that flexible displays cannot achieve multiple bending and / or sliding directions.

[0004] In a first aspect, this application provides a support plate for supporting a flexible display panel, comprising:

[0005] At least one folding region extending along a first direction is used for bending the support plate;

[0006] At least one sliding region extending along a second direction is used for curling and / or sliding the support plate; the intersection of the folding region and the sliding region forms an overlapping region; wherein the first direction intersects the second direction;

[0007] Along the direction perpendicular to the plane of the support plate, the folding area and the sliding area include multiple openings penetrating the support plate and / or multiple slots recessed from one side surface of the support plate to the other side surface, with a protrusion between two adjacent slots.

[0008] The folding area includes a first folding area, which does not overlap with the overlapping area in a direction perpendicular to the plane of the support plate. The sliding area includes a first sliding area, which does not overlap with the overlapping area in a direction perpendicular to the plane of the support plate.

[0009] Along the first direction, the side length of the protrusion in at least the partially overlapping region is greater than the side length of the protrusion in the first sliding region; and / or,

[0010] Along the second direction, in at least the partially overlapping region, the side length of the protrusion is greater than the side length of the protrusion in the first folded region; and / or,

[0011] Along the first direction, the inner diameter width of the opening in at least the partially overlapping region is smaller than the inner diameter width of the opening in the first folded region.

[0012] Secondly, this application provides a flexible display device, which includes a support plate.

[0013] Compared with the prior art, the support plate and flexible display device provided by the present invention achieve at least the following beneficial effects:

[0014] This application provides a support plate and a flexible display device. The support plate supports a flexible display panel. The support plate includes a folding region extending in a first direction and a sliding region extending in a second direction. The folding region and the sliding region intersect to form an overlapping region. Furthermore, in the first direction, the side length of the protrusion in at least the partially overlapping region is greater than the side length of the protrusion in the first sliding region; and / or, in the second direction, the side length of the protrusion in at least the partially overlapping region is greater than the side length of the protrusion in the first folding region; and / or, in the first direction, the inner diameter of the opening in at least the partially overlapping region is smaller than the inner diameter of the opening in the first folding region. This allows the flexible display panel supported by the support plate to bend in the corresponding folding region and to roll and / or slide in the corresponding sliding region. Simultaneously, the differentiated arrangement of openings and slots in different regions of the support plate improves the bending and / or rolling and / or sliding effect of the flexible display panel and extends the service life of the support plate.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0016] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0018] Figure 1 The diagram shown is a schematic diagram of a support plate provided in an embodiment of this application;

[0019] Figure 2 The diagram shown is a schematic representation of a flexible display panel provided in an embodiment of this application.

[0020] Figure 3 The image shown is a cross-sectional view of the support plate and flexible display panel after they are bonded together, as provided in an embodiment of this application.

[0021] Figure 4 The diagram shown is a schematic representation of a structural arrangement of one side surface of the support plate provided in an embodiment of this application.

[0022] Figure 5The diagram shown is a schematic representation of a structural arrangement on the other side surface of the support plate provided in an embodiment of this application.

[0023] Figure 6 The image shown is provided in the embodiment of this application. Figure 4 A cross-sectional view of AA';

[0024] Figure 7 The diagram shown is a schematic diagram of another structural arrangement of the other side surface of the support plate provided in the embodiment of this application;

[0025] Figure 8 The diagram shown is a schematic diagram of another structural arrangement of the other side surface of the support plate provided in the embodiment of this application;

[0026] Figure 9 The image shown is provided in the embodiment of this application. Figure 8 An enlarged schematic diagram of the mid-slip region;

[0027] Figure 10 The diagram shown is a schematic diagram of another structural arrangement of one side surface of the support plate provided in the embodiment of this application;

[0028] Figure 11 The diagram shown is a schematic diagram of another structural arrangement of the other side surface of the support plate provided in the embodiment of this application;

[0029] Figure 12 The image shown is provided in the embodiment of this application. Figure 10 A cross-sectional view of BB';

[0030] Figure 13 The image shown is provided in the embodiment of this application. Figure 4 Another cross-sectional view of AA';

[0031] Figure 14 The image shown is provided in the embodiment of this application. Figure 4 Another cross-sectional view of AA';

[0032] Figure 15 The diagram shown is a schematic representation of a flexible display device provided in an embodiment of this application. Detailed Implementation

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0034] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0036] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] Figure 1 The diagram shown is a schematic representation of a support plate provided in an embodiment of this application. Figure 2 The diagram shown is a schematic representation of a flexible display panel provided in an embodiment of this application. Figure 3 The image shown is a cross-sectional view of the support plate and flexible display panel after they are bonded together, according to an embodiment of this application. Figure 4 The diagram shown is a structural arrangement of one side surface of the support plate provided in an embodiment of this application. Figure 5 The diagram shown is a structural arrangement of the other side surface of the support plate provided in an embodiment of this application. Figure 6 The image shown is provided in the embodiment of this application. Figure 4 A cross-sectional view of AA'. Figure 7 The diagram shown illustrates another structural arrangement of the other side surface of the support plate provided in this embodiment. Please refer to... Figures 1-7 This application provides a support plate 100 for supporting a flexible display panel 200, comprising:

[0039] At least one folding region 12 extending along the first direction X1 is used to bend the support plate 100;

[0040] At least one sliding region 11 extending along the second direction Y1 is used for rolling and / or sliding the support plate 100; the folding region 12 and the sliding region 11 intersect to form an overlapping region 13; wherein the first direction X1 intersects the second direction Y1;

[0041] Along the direction perpendicular to the plane of the support plate 100, the folding area 12 and the sliding area 11 include a plurality of openings 42 penetrating the support plate 100 and / or a plurality of slots 41 recessed from one side surface of the support plate 100 to the other side surface, with a protrusion 43 between two adjacent slots 41.

[0042] The folding area 12 includes a first folding area 121. Along the direction perpendicular to the plane of the support plate 100, the first folding area 121 does not overlap with the overlapping area 13. The sliding area 11 includes a first sliding area 111. Along the direction perpendicular to the plane of the support plate 100, the first sliding area 111 does not overlap with the overlapping area 13.

[0043] Along the first direction X1, the side length of the protrusion 43 in at least partially overlapping region 13 is greater than the side length of the protrusion 43 in the first sliding region 111; and / or,

[0044] Along the second direction Y1, the side length of the protrusion 43 in at least the partially overlapping region 13 is greater than the side length of the protrusion 43 in the first folded region 121; and / or,

[0045] Along the first direction X1, the inner diameter of the opening 42 in at least partially overlapping region 13 is smaller than the inner diameter of the opening 42 in the first folded region 121.

[0046] Specifically, this application provides a support plate 100 for supporting a flexible display panel 200. The support plate 100 can assist the flexible display panel 200 in performing operations such as folding, rolling, and sliding, thereby realizing the bending and / or rolling functions of the flexible display panel 200; please refer to... Figures 4-7 The support plate 100 may include at least one folding region 12 extending along a first direction X1. The presence of the folding region 12 can be used to enable the support plate 100 to bend along a second direction Y1, thereby realizing the bending function of the flexible display panel 200. The support plate 100 may also include at least one sliding region 11 extending along the second direction Y1. The presence of the sliding region 11 can be used to enable the support plate 100 to roll or slide, thereby realizing the sliding function of the flexible display panel 200 along the first direction X1. The first direction X1 and the second direction Y1 intersect, thereby enabling the support plate 100 to enable the flexible display panel 200 to bend and slide along at least two different directions, thereby enabling the flexible display panel 200 to have multiple directions of bending and / or sliding, thereby realizing the selection of multiple directions of bending and / or sliding of the flexible display panel 200, improving the folding diversity of the flexible display panel 200, and improving the user experience.

[0047] Furthermore, this application further configures the support plate 100, including the folding area 12 and the sliding area 11. The area of ​​the folding area 12 of the support plate 100, excluding the overlapping area 13, is designated as the first folding area 121. That is, the first folding area 121 does not overlap with the overlapping area 13, and is used solely to realize the bending function of the support plate 100 along the second direction Y1. The area of ​​the sliding area 11 of the support plate 100, excluding the overlapping area 13, is designated as the first sliding area 111. That is, the first sliding area 111 does not overlap with the overlapping area 13, and is used solely to realize the sliding function of the support plate 100 along the first direction X1. Based on this, in order to realize the folding function of the folding area 12 and the sliding area... The sliding function of 11, along the direction perpendicular to the plane of the support plate 100, this application provides a plurality of openings 42 penetrating the support plate 100 in the folding area 12 and the sliding area 11, and / or a plurality of slots 41 recessed from one side surface of the support plate 100 to the other side surface, so that the support plate 100 in the folding area 12 and the sliding area 11 can be thinned or even hollowed out, so as to reduce the stress of the support plate 100 in this area when bending or sliding, and avoid damage or breakage of the support plate 100 when bending and / or sliding, thereby improving the bending and / or sliding effect of the support plate 100, which is conducive to improving at least one of the bending, rolling and sliding effects of the flexible display panel 200, and improving the service life of the support plate 100.

[0048] Please refer to Figure 7 This application provides an alternative embodiment in which, along the first direction X1, the side length of the protrusion 43 in at least the partially overlapping region 13 is greater than the side length of the protrusion 43 in the first sliding region 111, and / or, along the second direction Y1, the side length of the protrusion 43 in at least the partially overlapping region 13 is greater than the side length of the protrusion 43 in the first folding region 121; Figure 7As shown, in the overlapping region 13, the square protrusions 43 include two sets of three adjacent rows of square protrusions 43 along the second direction Y1. In these three rows, the middle row of square protrusions 43 has a side length that is longer than the side length of the other two adjacent rows, and also larger than the width dimensions of the protrusions 43 extending along the first direction X1 and the second direction Y1. This arrangement ensures that the first sliding area 111, the first folding area 121, and the overlapping region 13 all include slots 41, and the slots 41 in the first sliding area 111 and the first folding area 121 are larger. In the overlapping region 13, the presence of the protrusion 43 with a larger side length results in a smaller slot 41 than the slots 41 in the first sliding region 111 and the first folding region 121. This allows the first sliding region 111, the first folding region 121, and the overlapping region 13 to achieve the bending and / or sliding effect of the support plate 100. Since the overlapping region 13 needs to achieve both the bending and sliding functions of the support plate 100, the size of the slot 41 in the overlapping region 13 is set to be smaller. This avoids cracks or breakage in the thinner slot 41 area after repeated bending and / or sliding, thereby improving the service life of the support plate 100.

[0049] In addition, please continue to refer to Figure 7 This application also provides an alternative embodiment in which, along the first direction X1, the inner diameter of the opening 42 in at least part of the overlapping area 13 is smaller than the inner diameter of the opening 42 in the first folding area 121. That is, when both the first folding area 121 and the overlapping area 13 include openings 42 that penetrate the thickness of the support plate 100, since the overlapping area 13 itself already has a slot 41, in order to improve the fracture resistance of the overlapping area 13, the inner diameter of the opening 42 in the overlapping area 13 can be set to be smaller than the inner diameter of the opening 42 in the first folding area 121. This allows the first folding area 121 and the overlapping area 13 to achieve the bending function of the support plate 100, while avoiding cracks or breakage in the overlapping area 13, which already has a slot 41, after multiple bending and / or rolling, thereby improving the service life of the support plate 100.

[0050] It should be noted that this application does not limit whether the areas of the first folding region 121, including the slot 41 and the opening 42, overlap or do not overlap. For example... Figure 5 and Figure 7As shown, the area where the slot 41 is set and the area where the hole 42 is set in the folding area 12 can be set to not overlap as required; in addition, this application does not limit the specific setting position of the slot 41 and / or the hole 42 in the folding area 12 and the sliding area 11, and the slot 41 and the hole 42 can be set in different sub-areas in the folding area 12 and the sliding area 11 of the support plate 100 as required.

[0051] It should be added that the first direction X1 and the second direction Y1 provided in this application intersect, and can be further selected to be set so that the first direction X1 is perpendicular to the second direction Y1.

[0052] Figure 8 The diagram shown illustrates another structural arrangement of the other side surface of the support plate provided in this embodiment. Please refer to the diagram for details. Figure 1 , Figure 4 , Figure 5 , Figure 7 And refer to Figure 8 Optionally, along the second direction Y1, the support plate 100 includes a non-folded region 14 located on at least one side of the folded region 12, and the folded region 12 includes a first sub-folded region 31 and a second sub-folded region 32, the second sub-folded region 32 being located on the side of the first sub-folded region 31 away from the non-folded region 14.

[0053] Along the second direction Y1, the support plate 100 also includes a third sub-folding region 33 located between the first sub-folding region 31 and the second sub-folding region 32;

[0054] The third sub-folding area 33 includes the second folding area 332. Along the direction perpendicular to the plane of the support plate 100, the second folding area 332 does not overlap with the overlapping area 13. The second folding area 332 does not include the slot 41 or the opening 42.

[0055] The first sub-folding region 31 includes a slot 41, and the second sub-folding region 32 includes an opening 42.

[0056] Specifically, this application provides an alternative implementation. To clearly illustrate this implementation, the folding area 12 is divided into a first sub-folding area 31, a second sub-folding area 32, and a third sub-folding area 33. Along the second direction Y1, the support plate 100 includes a non-folding area 14 located on at least one side of the folding area 12. The support plate 100 in the non-folding area 14 will not be bent and will always be in a flat state. The second sub-folding area 32 is located on the side of the first sub-folding area 31 away from the non-folding area 14. The third sub-folding area 33 is located between the first sub-folding area 31 and the second sub-folding area 32. Based on this, along the direction perpendicular to the plane of the support plate 100, the third sub-folding area 33 may further include a second folding area 332 that does not overlap with the overlapping area 13. The second folding area 332 does not have a slot 41 or an opening 42 and remains in a flat state. Specifically, a slot 41 may be provided in the first sub-folding area 31 and an opening 42 may be provided in the second sub-folding area 32.

[0057] Furthermore, taking the support plate 100 along the second direction Y1, including the non-folding areas 14 located on both sides of the folding area 12 as an example, the second direction Y1 can at least include the non-folding area 14, the first sub-folding area 31, the third sub-folding area 33, the second sub-folding area 32, the third sub-folding area 33, the first sub-folding area 31, and the non-folding area 14 arranged sequentially. The support plate 100 can be folded along the second sub-folding area 32 as the folding axis. The first sub-folding areas 31 located on both sides of the second sub-folding area 32 can achieve further deformation of the support plate 100, so that the first sub-folding area 31, the third sub-folding area 33, and the second sub-folding area 32 can form a teardrop shape after bending. The first sub-folding area 31 is the waist of the teardrop shape formed after the folding area 12 is bent. This ensures the bending effect of the support plate 100 and improves its bending performance. In addition, the third sub-folding area 33 does not have openings 42 or slots 41. Therefore, the third sub-folding area 33 can be presented as a plane with the same shape as the non-folding area 14. This is conducive to the bonding between the third sub-folding area 33 and the flexible display panel 200 provided on one side of the support plate 100, improving the bonding effect between the support plate 100 and the flexible display panel 200. Moreover, when the support plate 100 is in a flattened state, it can further maintain the flatness of the flexible display panel 200 corresponding to the third sub-folding area 33.

[0058] Furthermore, along the second direction Y1, the third sub-folding areas 33 located on both sides of the second sub-folding area 32 can be optionally set to have the same size, and the first sub-folding areas 31 located on both sides of the second sub-folding area 32 can also be optionally set to have the same size. This ensures that the bending effect of the support plate 100 on both sides of the second sub-folding area 32 is the same, avoiding the situation where the bending effect on one side is poor due to different bending stresses on both sides. This ensures the uniformity of folding of the support plate 100 in the folding area 12 and improves the service life of the support plate 100. At the same time, since the bending degree of the second sub-folding area 32 is greater, the first sub-folding area 31 can be optionally set to include a slot 41 and the second sub-folding area 32 can be optionally set to include an opening 42, thereby improving the bending capacity of the second sub-folding area 32 and ensuring a good folding effect of the folding area 12.

[0059] Of course, this application is not limited to the above embodiments. For example, it is also possible to choose to set both the first sub-folding area 31 and the second sub-folding area 32 to include openings 42, or both to include slots 41, or both to include both openings 42 and slots 41, etc. The specific setting areas of openings 42 and slots 41 in the folding area 12 can be selected according to the requirements.

[0060] Please continue to combine Figure 1 , Figure 4 , Figure 5 , Figure 7 And refer to Figure 8 Optionally, the overlapping region 13 includes a first sub-overlapping region 311 located in the first sub-folding region 31;

[0061] The slot 41 includes a first slot 411 extending along a first direction X1 and a second slot 412 extending along a second direction Y1;

[0062] The first sub-overlapping region 311 includes a first slot 411 and a second slot 412.

[0063] Specifically, this application also provides an alternative implementation in which the folding region 12 and the sliding region 11 intersect to form an overlapping region 13. Therefore, the overlapping region 13 includes a portion of the folding region 12. When the folding region 12 includes a first sub-folding region 31, to clearly illustrate this embodiment, the first sub-folding region 31 located in the overlapping region 13 is taken as the first sub-overlapping region 311. The support plate 100 may be provided with a first slot 411 extending along the first direction X1 and a second slot 412 extending along the second direction Y1. The first sub-overlapping region 311 may be provided with both the first slot 411 and the second slot 412, so that the first sub-overlapping region 311 can slide along the first direction X1 and fold along the second direction Y1, so that the support plate 100 can achieve bending and sliding in multiple directions, improve the bending diversity of the support plate 100, and ensure the diversified folding and sliding requirements of the corresponding flexible display panel 200.

[0064] This application provides a specific embodiment, such as... Figure 8 As shown, the sliding area 11 includes a plurality of second slots 412 extending along the second direction Y1, and the first sub-folding area 31 includes a plurality of first slots 411 extending along the first direction X1. The first slots 411 extending along the first direction X1 and the second slots 412 extending along the second direction Y1 intersect in the first sub-overlapping area 311, so that the first sub-overlapping area 311 includes both the first slots 411 and the second slots 412, so as to realize the bending and sliding functions of the support plate 100 in two directions.

[0065] Please continue to combine Figure 1 , Figure 4 , Figure 5 , Figure 7 And refer to Figure 8 Optionally, the overlapping region 13 includes a second sub-overlapping region 322 located in the second sub-folding region 32;

[0066] The slot 41 includes a second slot 412 extending along the second direction Y1;

[0067] The second sub-overlapping region 322 also includes a second slot 412.

[0068] Specifically, this application also provides an alternative implementation in which the overlapping region 13 formed by the intersection of the folding region 12 and the sliding region 11 is included in the overlapping region 13. When the folding region 12 includes a second sub-folding region 32, in order to clearly illustrate this embodiment, the second sub-folding region 32 located in the overlapping region 13 is taken as the second sub-overlapping region 322. The second sub-folding region 32 in the support plate 100 includes an opening 42. At the same time, the second sub-overlapping region 322 in the support plate 100 may further include a second slot 412 extending along the second direction Y1. That is, the second sub-overlapping region 322 includes both the opening 42 and the second slot 412, so that the second sub-overlapping region 322 can slide along the first direction X1 and fold along the second direction Y1, so that the support plate 100 can achieve bending and sliding in multiple directions, improve the bending diversity of the support plate 100, and ensure the diversified folding and sliding requirements of the corresponding flexible display panel 200.

[0069] This application provides a specific embodiment, such as... Figure 8 As shown, the sliding area 11 includes a plurality of second slots 412 extending along the second direction Y1, and the second sub-folding area 32 includes a plurality of openings 42 provided along the first direction X1. The openings 42 provided along the first direction X1 and the second slots 412 extending along the second direction Y1 intersect in the second sub-overlapping area 322, so that the second sub-overlapping area 322 includes both openings 42 and second slots 412, so as to realize the bending and sliding functions of the support plate 100 in two directions.

[0070] Please continue to combine Figure 1 , Figure 4 , Figure 5 , Figure 7 And refer to Figure 8 Optionally, the opening 42 includes a plurality of first openings 421 located in the first folding region 121 and a plurality of second openings 422 located in the second sub-overlapping region 322;

[0071] The area of ​​the first opening 421 projected onto the plane of the support plate 100 is greater than the area of ​​the second opening 422 projected onto the plane of the support plate 100.

[0072] Specifically, this application also provides an optional implementation in which, when the folding region 12 includes multiple openings 42, all openings 42 can be optionally provided in the second sub-folding region 32. The second sub-folding region 32 may include a second sub-overlapping region 322 located in the overlapping region 13 and a portion located in the first folding region 121. In this case, the openings 42 included in the second sub-folding region 32 located in the first folding region 121 can be optionally provided as first openings 421, and the openings 42 included in the second sub-overlapping region 322 can be optionally provided as second openings 422. The area of ​​the orthographic projection of the first opening 421 onto the plane of the support plate 100 can be optionally provided as greater than the area of ​​the orthographic projection of the second opening 422 onto the plane of the support plate 100; that is, it is equivalent to setting the opening area of ​​the first opening 421 in the second sub-folding region 32 located in the first folding region 121 to be larger. Some, and the opening area of ​​the second opening 422 in the second sub-overlapping area 322 including the second slot 412 is smaller. With this setting, the first opening 421 with a larger opening 42 can make the bending effect of the second sub-folding area 32 located in the first folding area 121 better, and the setting of the first opening 421 and the second opening 422 can realize the bending of the support plate 100 in the second sub-folding area 32. The smaller area of ​​the second opening 422 can improve the service life of the second sub-overlapping area 322 with the second slot 412, and avoid the problem that the second sub-overlapping area 322 is prone to breakage due to insufficient or thin material of the support plate 100. The second opening 422 is further set in the second sub-overlapping area 322 on the basis of the second slot 412, which can also further improve the curling and / or sliding ability of the support plate 100 in the rolling area 11.

[0073] Figure 9 The image shown is provided in the embodiment of this application. Figure 8 An enlarged schematic diagram of the middle sliding area; please refer to... Figure 1 , Figure 4 , Figure 5 , Figure 7 , Figure 8 And refer to Figure 9 Optionally, along the first direction X1, the size of the protrusion 43 in the second sub-overlapping area 322 is D1, and the size of the protrusion 43 in the first sliding area 111 is D2, where D1 ≥ D2;

[0074] The third sub-folding region 33 includes a third sub-overlapping region 333, which overlaps with the overlapping region 13. Along the first direction X1, the size of the protrusion 43 in the third sub-overlapping region 333 is D3, where D1 ≥ D3.

[0075] Specifically, the sliding region 11 includes a first sub-overlapping region 311, a second sub-overlapping region 322, and a third sub-overlapping region 333 located in the overlapping region 13, and also includes a first sliding region 111 that does not overlap with the overlapping region 13. This application also provides an alternative implementation in which, along the first direction X1, the width of the protrusion 43 located in the second sub-overlapping region 322 is set to D1, the width of the protrusion 43 located in the first sliding region 111 is set to D2, and the width of the protrusion 43 located in the third sub-overlapping region 333 is set to D3. Since the second sub-overlapping region 322 includes both a second slot 412 and a second opening 422... Since the first sliding area 111 and the third sub-folding area 33 only include the second slot 412, the width D1 of the protrusion 43 in the second sub-overlapping area 322 can be set to be larger than the widths D2 and D3 of the protrusion 43 in the first sliding area 111 and the third sub-folding area 33. This can avoid the problem that the material area used to make the support plate 100 in the second sub-overlapping area 322 is too small, which may cause the part to break easily during use. This can improve the service life of the support plate 100 and at the same time ensure the bending function of the support plate 100 in the folding area 12 and the rolling and / or sliding function in the sliding area 11.

[0076] Furthermore, this application does not limit the setting of D1>D2 and D1>D3. D1=D2=D3 can also be set according to the requirements to ensure the bending function of the support plate 100 in the folding area 12 and the rolling and / or sliding function in the rolling area 11.

[0077] In addition, D2 can be set to D3 as required, but D1 > D2 and D1 > D3. In this case, the second slot 412 located in the first sliding area 111 and the third sub-overlapping area 333 can be integrally formed in the same process. This setting can simplify the manufacturing process of the support plate 100 and improve the manufacturing efficiency of the support plate 100. At the same time, setting the width D1 of the protrusion 43 in the second sub-overlapping area 322 to be larger can avoid the problem that the material area used to make the support plate 100 in the second sub-overlapping area 322 is too small, which will easily cause the part to break during use. This can improve the service life of the support plate 100 and at the same time ensure the bending function of the support plate 100 in the folding area 12 and the rolling and / or sliding function in the sliding area 11.

[0078] Figure 10 The diagram shown illustrates another structural arrangement of one side surface of the support plate provided in an embodiment of this application. Figure 11 The diagram shown illustrates another structural arrangement of the other side surface of the support plate provided in this embodiment. Figure 12 The image shown is provided in the embodiment of this application. Figure 10 Please refer to a cross-sectional view of BB'. Figure 1 and Figures 10-12 Optionally, the overlapping region 13 includes a second sub-overlapping region 322 located in the second sub-folding region 32;

[0079] Along the direction perpendicular to the plane where the support plate 100 is located, the second sub-overlapping area 322 includes a first surface 51 and a second surface 52 that are opposite each other, and the first surface 51, the second surface 52 and the plane where the support plate 100 is located are parallel to each other.

[0080] Along the direction perpendicular to the plane of the support plate 100, the thickness of the second sub-overlapping area 322 is K1, and the maximum thickness of other areas in the support plate 100 other than the second sub-overlapping area 322 is K2, where K1 < K2.

[0081] Specifically, the folding area 12 and the sliding area 11 intersect to form an overlapping area 13. The overlapping area 13 includes a first sub-overlapping area 311 located in the first sub-folding area 31, a second sub-overlapping area 322 located in the second sub-folding area 32, and a second sub-overlapping area 322 located in the third sub-folding area 33. This application also provides an alternative implementation in which, along a direction perpendicular to the plane of the support plate 100, the second sub-overlapping area 322 may optionally include opposing first surfaces 51 and second surfaces 52, and the first surfaces 51 and second surfaces 52 are set to be parallel to each other, while simultaneously the first surface 51 is positioned perpendicular to the plane of the support plate 100. Since the planes are parallel to each other, the thickness K1 of the second sub-overlapping area 322 can be further set to be smaller than the thickness K2 of other areas of the support plate 100 in the direction perpendicular to the plane of the support plate 100. The second sub-overlapping area 322 can be selected to include a slot 41 with a relatively large area. The slot 41 with a relatively large area can be set on one or both sides of the support plate 100 in the direction perpendicular to the plane of the support plate 100, so that the thickness of the second sub-overlapping area 322 is smaller, which facilitates the rolling and / or sliding of the sliding area 11 of the support plate 100 and facilitates the bending of the folding area 12 of the support plate 100.

[0082] Here, this application also provides a specific embodiment in which the folding area 12 of the support plate 100 includes a first folding area 121 that does not overlap with the overlapping area 13, the sliding area 11 includes a first sliding area 111 that does not overlap with the overlapping area 13, and the folding area 12 includes a first sub-folding area 31, a third sub-folding area 33, a second sub-folding area 32, a third sub-folding area 33, and a first sub-folding area 31 arranged sequentially along the second direction Y1, wherein the overlapping area 13 includes a first sub-overlapping area 311 corresponding to the first sub-folding area 31 and a second sub-folding area 32 corresponding to the second sub-folding area 33. Based on the second sub-overlapping area 322 corresponding to domain 32 and the third sub-overlapping area 333 corresponding to the third sub-folding area 33, the first sub-folding area in the first folding area 121 may optionally include a first slot 411 extending along the first direction X1, the second sub-folding area in the first folding area 121 may include a first opening 421 extending along the first direction X1, the first sliding area 111 may include a second slot 412 extending along the second direction Y1, and the first sub-overlapping area 311 may include a first slot 411 extending along the first direction X1 and a second opening 421 extending along the second direction Y1. The second slot 412 extends in the direction Y1, and the third sub-overlapping area 333 includes the second slot 412 extending in the second direction Y1. The second sub-overlapping area 322 includes the third slot 413 and the fourth slot 414. The side of the third slot 413 facing the fourth slot 414 is the first surface 51, and the side of the fourth slot 414 facing the third slot 413 is the second surface 52. Further, in a direction perpendicular to the plane of the support plate 100, the first surface 51 and the surface of the adjacent support plate 100 on the side away from the second surface 52 can be selectively arranged to include the third slot 413. A height difference K3 exists between the second surface 52 and the surface of the adjacent support plate 100 on the side away from the first surface 51, and a second height difference K4 exists between them, where K3 ≥ K4. This is to ensure that the second sub-overlapping area 322 does not include the opening 42, but only includes the slot 41 with a relatively large area. The thickness of the support plate 100 in the second sub-overlapping area 322 is reduced by setting the slot 41 (e.g., the third slot 413 and the fourth slot 414), thereby improving the bending capacity of the second sub-overlapping area 322 and enabling the support plate 100 to bend and roll along the first direction X1 and the second direction Y1.

[0083] It should be added that the first height difference K3 between the first surface 51 and the surface of the adjacent support plate 100 on the side away from the second surface 52 is equivalent to the depth of the third slot 413, and the second height difference K4 between the second surface 52 and the surface of the adjacent support plate 100 on the side away from the first surface 51 is equivalent to the depth of the fourth slot 414. In order to ensure that the bending capacity of the second sub-overlapping area 322 is comparable when it is rolled or slid in the lateral direction of the support plate 100, K3 can be set to K4. Since the thickness of the support plate 100 is generally small for the stacked structure of flexible display modules, it is acceptable to set K3 and K4 to have a certain numerical difference, as long as it can ensure that the bending capacity of the second sub-overlapping area 322 is comparable when it is rolled or slid in the lateral direction of the support plate 100. In addition, if the support plate 100 is only used for rolling or sliding to one side of the support plate 100, the difference between K3 and K4 can be set to be slightly larger, as long as the support plate 100 can be used to drive the corresponding flexible display panel 200 for the required rolling or sliding.

[0084] In addition, this application also provides an alternative embodiment, please refer to... Figures 10-12 Along the direction perpendicular to the plane of the support plate 100, when the second sub-overlapping area 322 includes a third slot 413 and a fourth slot 414 located on both sides, along the direction perpendicular to the plane of the support plate 100, the projected area of ​​the third slot 413 on the plane of the support plate 100 can be optionally set to be equal to the projected area of ​​the fourth slot 414 on the plane of the support plate 100, and simultaneously set to be equal to the area of ​​the second sub-overlapping area 322; alternatively, the projected area of ​​the third slot 413 on the plane of the support plate 100 can also be optionally set to be equal to the projected area of ​​the fourth slot 414 on the plane of the support plate 100. However, the orthographic projection area of ​​the third slot 413 on the plane of the support plate 100 is smaller than the area of ​​the second sub-overlapping area 322. Based on this, it is possible to further select that the orthographic projection of the third slot 413 on the plane of the support plate 100 completely overlaps with the orthographic projection of the fourth slot 414 on the plane of the support plate 100, or it is possible to further select that the orthographic projection of the third slot 413 on the plane of the support plate 100 partially overlaps with the orthographic projection of the fourth slot 414 on the plane of the support plate 100. This application does not make specific limitations on this. The area and orthographic projection position of the third slot 413 and the fourth slot 414 located in the second sub-overlapping area 322 can be adjusted according to actual design requirements.

[0085] Figure 13 The image shown is provided in the embodiment of this application. Figure 4 For another cross-sectional view of AA', please refer to... Figures 1-4 and Figure 13 Optionally, the support plate 100 includes a third surface 63 facing the flexible display panel 200 and a fourth surface 64 away from the flexible display panel 200.

[0086] The slot 41 includes a first sub-slot 71 and a second sub-slot 72. The first sub-slot 71 is formed by a recess in the third surface toward the fourth surface, and the second sub-slot 72 is formed by a recess in the fourth surface toward the third surface.

[0087] The protrusion 43 includes a first protrusion 431 and a second protrusion 432. Along the direction of the plane where the support plate is located, the first protrusion 431 is located between two adjacent first sub-slots 71, and the second protrusion 432 is located between two adjacent second sub-slots 72.

[0088] In the sliding region 11, the first protrusion 431 and the second protrusion 432 do not overlap in the direction perpendicular to the plane of the support plate 100.

[0089] Specifically, the support plate 100 includes a third surface 63 facing the flexible display panel 200 and a fourth surface 64 away from the flexible display panel 200. The slot 41 includes a first sub-slot 71 and a second sub-slot 72. The first sub-slot 71 is formed by a recess in the third surface facing the fourth surface, and the second sub-slot 72 is formed by a recess in the fourth surface facing the third surface. Along the plane of the support plate, the protrusion 43 includes a first protrusion 431 formed between adjacent first sub-slots 71 and a second protrusion 432 formed between adjacent second sub-slots 72. Based on this, this application also provides an alternative embodiment in which, in the sliding region 11, along the direction perpendicular to the plane of the support plate 100, a... By ensuring that the orthographic projection of the first protrusion 431 onto the plane of the support plate 100 does not overlap with the orthographic projection of the second protrusion 432 onto the plane of the support plate 100, the slots 41 located on the third surface 63 and the fourth surface 64 in the sliding roll area 11 can be alternately arranged. The protrusions 43 formed between two adjacent slots 41 on the same surface and the protrusions 43 formed between two adjacent slots 41 on the opposite surface do not overlap. This arrangement avoids the overlapping area of ​​the protrusions 43 on the third surface 63 and the fourth surface 64, which would make the support plate 100 in the corresponding area too thick, affecting the bending ability of the support plate 100 in that area, thereby improving the rolling or sliding effect of the support plate 100 in the sliding roll area 11.

[0090] Figure 14 The image shown is provided in the embodiment of this application. Figure 4 For another cross-sectional view of AA', please refer to Figure 1. Figure 4 and Figure 13 , Figure 14 Furthermore, this application also provides an alternative implementation in which the slot 41 extends along the second direction Y1 in the sliding region 11; the first protrusion 431 and the second protrusion 432 are connected along the first direction X1; and / or, there is a gap between the first protrusion 431 and the second protrusion 432. The orthographic projection of the first protrusion 431 on the plane of the support plate 100 along the first direction X11 provided by this application is connected with the orthographic projection of the second protrusion 432 on the plane of the support plate 100, or there is a gap between the orthographic projection of the first protrusion 431 on the plane of the support plate 100 and the orthographic projection of the second protrusion 432 on the plane of the support plate 100. These are all alternative facilities provided by this application, and the arrangement relationship of the first protrusion 431 and the second protrusion 432 can be selected according to the requirements.

[0091] When a gap is included between the orthographic projection of the first protrusion 431 on the plane of the support plate 100 and the orthographic projection of the second protrusion 432 on the plane of the support plate 100, the orthographic projections of the slot 41 on the third surface 63 and the slot 41 on the fourth surface 64 on the plane of the support plate 100 overlap. This results in more areas of the support plate 100 with a thinner thickness in the sliding roll area 11, thereby further improving the bending ability of the support plate 100 in this area and enhancing the rolling or sliding effect of the support plate 100 in the sliding roll area 11.

[0092] Please refer to Figure 1 , Figures 4-8 Optionally, along the first direction X1, the length of the opening 42 in the overlapping region 13 is H1, and the length of the opening 42 in the first folded region 121 is H2, where H2×50%≤H1≤H2×80%.

[0093] Specifically, this application also provides an alternative implementation in which, when the folding area 12 includes an opening 42, the length of the opening 42 located in the overlapping area 13 along the first direction X1 can be set to H1, and the length of the opening 42 located in the first folding area 121 can be set to H2, wherein H2×50%≤H1≤H2×80%, so that the length of the opening 42 located in the overlapping area 13 and the length of the opening 42 located in the first folding area 121 are not much different, thus avoiding the reduction in the service life of the support plate 100 due to the support plate 100 occupying too little material area caused by the opening 42 being too long, and at the same time avoiding the impact of the support plate 100 bending effect due to the opening 42 being too short.

[0094] Furthermore, this application provides a specific embodiment in which the folding region 12 of the support plate 100 includes a first folding region 121 that does not overlap with the overlapping region 13, the sliding region 11 includes a first sliding region 111 that does not overlap with the overlapping region 13, and the folding region 12 includes a first sub-folding region 31, a third sub-folding region 33, a second sub-folding region 32, a third sub-folding region 33, and a first sub-folding region 31 arranged sequentially along the second direction Y1, wherein the overlapping region 13 includes a first sub-overlapping region 311 corresponding to the first sub-folding region 31, and a third sub-folding region 32 corresponding to the first sub-folding region 33. Based on the second sub-overlapping area 322 corresponding to the second sub-folding area 32 and the third sub-overlapping area 333 corresponding to the third sub-folding area 33, the opening 42 set in the second sub-folding area 32 located in the first folding area 121 can be selected as the first opening 421, the length of the first opening 421 along the first direction X1 is H1, the opening 42 set in the second sub-overlapping area 322 is the second opening 422, the length of the second opening 422 along the first direction X1 is H2, and H2×50%≤H1≤H2×80%.

[0095] In addition, this application also provides an alternative implementation in which organic material is filled into the slots 41 and / or openings 42 provided in the support plate 100, so that the support plate 100 has a flatter surface, thereby improving the bonding effect between the support plate 100 and the flexible display panel 200. Furthermore, the organic material has good elasticity and will not affect the bending effect of the folding area 12 and the sliding area 11 of the support plate 100, thus improving the bonding effect between the support plate 100 and the flexible display panel 200 while ensuring the bending effect of the support plate 100.

[0096] Figure 15 The diagram shown is a schematic representation of a flexible display device provided in an embodiment of this application. Please refer to the provided text for further details. Figures 1-14 Reference Figure 15 Based on the same inventive concept, this application also provides a flexible display device 300, which includes a support plate 100. The support plate can be any type of support plate 100 provided in this application.

[0097] It should be noted that the embodiments of the flexible display device 300 provided in this application can refer to the embodiments of the support plate 100 described above, and will not be repeated here. The flexible display device 300 provided in this application can be any product and component with display function, such as mobile phones, tablets, televisions, monitors, laptops, vehicle displays, and navigation devices.

[0098] As can be seen from the above embodiments, the support plate and flexible display device provided by the present invention achieve at least the following beneficial effects:

[0099] This application provides a support plate and a flexible display device. The support plate supports a flexible display panel. The support plate includes a folding region extending in a first direction and a sliding region extending in a second direction. The folding region and the sliding region intersect to form an overlapping region. Furthermore, in the first direction, the side length of the protrusion in at least the partially overlapping region is greater than the side length of the protrusion in the first sliding region; and / or, in the second direction, the side length of the protrusion in at least the partially overlapping region is greater than the side length of the protrusion in the first folding region; and / or, in the first direction, the inner diameter of the opening in at least the partially overlapping region is smaller than the inner diameter of the opening in the first folding region. This allows the flexible display panel supported by the support plate to bend in the corresponding folding region and to roll and / or slide in the corresponding sliding region. Simultaneously, the differentiated arrangement of openings and slots in different regions of the support plate improves the bending and / or rolling and / or sliding effect of the flexible display panel and extends the service life of the support plate.

[0100] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A support plate for supporting a flexible display panel, characterized in that, include: At least one folding region extending along a first direction is used to bend the support plate, which is bent along a second direction; At least one sliding region extending along the second direction is used for curling and / or sliding the support plate, the support plate being curled and / or sliding along the first direction; the folding region and the sliding region intersect to form an overlapping region; wherein the first direction intersects the second direction; Along a direction perpendicular to the plane of the support plate, the folding area and the sliding area include a plurality of openings penetrating the support plate and a plurality of slots recessed from one side surface of the support plate to the other side surface, with a protrusion between two adjacent slots; The folding area includes a first folding area, which does not overlap with the overlapping area along a direction perpendicular to the plane of the support plate. The sliding area includes a first sliding area, which does not overlap with the overlapping area along a direction perpendicular to the plane of the support plate. Along the first direction, the side length of the protrusion in at least a portion of the overlapping region is greater than the side length of the protrusion in the first sliding region; Along the second direction, the side length of the protrusion in at least a portion of the overlapping region is greater than the side length of the protrusion in the first folded region; Along the first direction, the inner diameter width of the opening in at least a portion of the overlapping region is smaller than the inner diameter width of the opening in the first folded region; Along the second direction, the support plate includes a non-folded area located on at least one side of the folded area, the folded area includes a first sub-folded area and a second sub-folded area, the second sub-folded area being located on the side of the first sub-folded area away from the non-folded area; Along the second direction, the support plate further includes a third sub-folding region located between the first sub-folding region and the second sub-folding region; The third sub-folding area includes a second folding area. Along the direction perpendicular to the plane where the support plate is located, the second folding area does not overlap with the overlapping area. The second folding area does not include the slot or the opening. The first sub-folded area includes the slot, and the second sub-folded area includes the opening; The overlapping region includes a first sub-overlapping region located in the first sub-folding region and a second sub-overlapping region located in the second sub-folding region; The slot includes a first slot extending in a first direction and a second slot extending in a second direction; The first sub-overlapping region includes the first slot and the second slot; The second sub-overlapping region also includes the second slot.

2. The support plate according to claim 1, characterized in that, The opening includes a plurality of first openings located in the first folded area and a plurality of second openings located in the second sub-overlapping area; The area of ​​the first opening projected onto the plane of the support plate is greater than the area of ​​the second opening projected onto the plane of the support plate.

3. The support plate according to claim 2, characterized in that, Along the first direction, the size of the protrusion in the second sub-overlapping area is D1, and the size of the protrusion in the first sliding area is D2, where D1 ≥ D2; The third sub-folded region includes a third sub-overlapping region, which overlaps with the overlapping region. Along the first direction, the size of the protrusion in the third sub-overlapping region is D3, where D1 ≥ D3.

4. The support plate according to claim 3, characterized in that, D2=D3.

5. The support plate according to claim 1, characterized in that, The overlapping region includes a second sub-overlapping region located in the second sub-folding region; Along a direction perpendicular to the plane of the support plate, the second sub-overlapping area includes opposing first and second surfaces, with the first surface, the second surface, and the plane of the support plate being parallel to each other; Along the direction perpendicular to the plane of the support plate, the thickness of the second sub-overlapping area is K1, and the maximum thickness of other areas of the support plate other than the second sub-overlapping area is K2, where K1 < K2.

6. The support plate according to claim 5, characterized in that, Along a direction perpendicular to the plane of the support plate, there is a first height difference H3 between the first surface and the surface of the adjacent support plate that is away from the second surface, and there is a second height difference H4 between the second surface and the surface of the adjacent support plate that is away from the first surface, where H3 ≥ H4.

7. The support plate according to claim 1, characterized in that, Along the first direction, the length of the opening in the overlapping region is H1, and the length of the opening in the first folded region is H2, where H2×50%≤H1≤H2×80%.

8. A flexible display device, characterized in that, Includes the support plate as described in any one of claims 1-7.

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