Support and manufacturing method thereof, flexible display module, and electronic device

Abstract

The present application provides a support and a manufacturing method thereof, a flexible display module, and an electronic device, all of which belong to the field of display devices. The support includes a flexible support layer (21) and a plurality of support strips (22), the flexible support layer (21) having opposing first and second surfaces (21a and 21b), the second surface (21b) being used to support a flexible display panel, the flexible support layer (21) including adjacent slide-roll regions (a) and flat support regions (b), the plurality of support strips (22) located on the first surface (21a) and the slide-roll region (a), the plurality of support strips (22) being sequentially arranged along a first direction (X) away from the flat support region (b), the first direction (X) being parallel to the first surface (21a) and intersecting the longitudinal direction of the support strips (22).

Description

[Technical Field]

[0001] The present application relates to the field of display devices, and in particular to a support and its manufacturing method, a flexible display module, and an electronic device. [Background technology]

[0002] With the development of technology, the applications of electronic devices have become more and more widespread, and they have become an important tool in people's daily work and life. Sliding and rolling electronic devices are popular among the masses due to their portability and large display area.

[0003] The slide-and-roll electronic device includes a flexible display module and a winding shaft. The flexible display module is partially wound around the winding shaft, and can be pulled out from the winding shaft during use and then rewound onto the winding shaft after use.

[0004] The flexible display module includes a flexible display panel and a support, and the flexible display panel is attached to the support. After the flexible display module is unwound from the reel, it is supported by the support. Since the flexible display module needs to be wound up, the structure of the support needs to be such that the flexible display module can be easily wound up and that stress is reduced. Summary of the Invention

[0005] According to the embodiments of the present application, a support and a manufacturing method thereof, a flexible display module, and an electronic device are provided, which can facilitate winding up of the flexible display module.

[0006] In a first aspect, a support is provided in an embodiment of the present application, the support including a flexible support layer and a plurality of support strips, the flexible support layer having opposing first and second surfaces, the second surface being used to support a flexible display panel, the flexible support layer including adjacent slide-roll regions and planar support regions, the plurality of support strips being located on the first surface and on the slide-roll region, the plurality of support strips being sequentially arranged along a first direction away from the planar support region, the first direction being parallel to the first surface and intersecting the longitudinal direction of the support strips.

[0007] Optionally, in the slide-and-roll region, the flexible support layer has a pattern, the pattern including a plurality of grooves and / or a plurality of through holes.

[0008] Optionally, the pattern is located between adjacent support strips.

[0009] As one option, the second surface has ribs in an area facing the support strip, and the longitudinal direction of the ribs coincides with the longitudinal direction of the support strip.

[0010] As an option, the surface of the rib facing away from the support strip is a convex arc.

[0011] In one option, the rib includes a top surface and two side surfaces adjacent to the top surface, the top surface being away from the support strip, the two side surfaces being opposed, and one of the side surfaces being adjacent to the planar support area, and the rib has a first rounded corner at the connection between the side surface and the top surface.

[0012] Alternatively, the cross section of the support strip is trapezoidal and the top of the trapezoid is spaced from the flexible support layer, or the cross section of the support strip is rectangular.

[0013] Optionally, the support further comprises a resilient filler material located between adjacent support strips and connecting the flexible support layer and the support strips.

[0014] Optionally, the surface of the resilient filler facing away from the flexible support layer is a concave arc.

[0015] Optionally, adjacent side walls of adjacent support strips are concave.

[0016] In one option, the surface of the support strip adjacent the flexible support layer is a convex arc, and the resilient filler material is located on at least a portion of the convex arc.

[0017] Optionally, the support strip has a second rounded corner at the juncture of the surface adjacent the flexible support layer and the side wall of the support strip, and the resilient filler material is located at the second rounded corner.

[0018] As an option, the support further comprises a planar support layer located on the planar support region and on the first surface, the surface of the planar support layer facing away from the flexible support layer having a receiving groove.

[0019] Optionally, the flexible support layer further includes an arcuate region, the arcuate region being located on a side of the planar support region away from the slide-and-roll region.

[0020] As one option, the ratio of the spacing between adjacent support strips to the width of the support strip in the first direction is between 0.5 and 2.

[0021] In a second aspect, the present application also provides a method for manufacturing a support, the method comprising the steps of:

[0022] A plurality of support strips are formed on a first surface of a flexible support layer, the flexible support layer having opposing first and second surfaces, the second surface being used to support a flexible display panel, the flexible support layer including adjacent slide roll regions and flat support regions, the plurality of support strips being located in the slide roll regions, the plurality of support strips being sequentially arranged along a first direction away from the flat support region, the first direction being parallel to the first surface and intersecting the longitudinal direction of the support strips.

[0023] In some examples, forming a plurality of support strips on the first surface of the flexible support layer comprises: fabricating the flexible support layer and the plurality of support strips, respectively; connecting the plurality of support strips to a first surface of the flexible support layer; Includes.

[0024] In another example, forming a plurality of support strips on the first surface of the flexible support layer comprises: Providing a plank; machining at least one surface of the plate to form the plurality of support strips and the flexible support layer; Includes.

[0025] In a third aspect, an embodiment of the present application also provides a flexible display module, the flexible display module including a flexible display panel and a support according to the first aspect, the flexible display panel being located on a second surface of the support.

[0026] In a fourth aspect, an electronic device is also provided in an embodiment of the present application, the electronic device comprising the flexible display module according to the third aspect.

[0027] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least the following:

[0028] In the support of a flexible display module, by installing multiple support strips in the sliding and rolling area of ​​the flexible support layer, the thickness of the support is large and the structural strength is high at the positions where the support strips are present, thereby providing better support, and the thickness of the support is small and the structural strength is low at the positions between adjacent support strips, which is advantageous for winding in the sliding and rolling area. [Brief explanation of the drawings]

[0029] In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly explain the drawings necessary for explaining the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without paying any creative effort.

[0030] [Figure 1] 1 is a structural schematic diagram of a flexible display module provided in an embodiment of the present application; [Figure 2] 1 is a structural schematic diagram of a support of a flexible display module provided in an embodiment of the present application; [Figure 3] FIG. 2 is a side view of a support provided in an embodiment of the present application. [Figure 4] 1 is a structural schematic diagram of a support provided in an embodiment of the present application. [Figure 5] 1 is a structural schematic diagram of a support provided in an embodiment of the present application. [Figure 6] FIG. 2 is a side view of a support provided in an embodiment of the present application. [Figure 7] FIG. 2 is a side view of a support provided in an embodiment of the present application. [Figure 8] FIG. 2 is a side view of a support provided in an embodiment of the present application. [Figure 9] FIG. 2 is a side view of a support provided in an embodiment of the present application. [Figure 10] FIG. 2 is a partially enlarged schematic view of a support provided in an example of the present application. [Figure 11]FIG. 2 is a partially enlarged schematic view of a support provided in an example of the present application. [Figure 12] FIG. 2 is a partially enlarged schematic view of a support provided in an example of the present application. [Figure 13] FIG. 2 is a partially enlarged schematic view of a support provided in an example of the present application. [Figure 14] 1 is a structural schematic diagram of a support provided in an embodiment of the present application. [Figure 15] 1 is a flowchart of a manufacturing method for a support of a flexible display module provided in an embodiment of the present application. [Figure 16] 1 is a flowchart of a manufacturing method for a support of a flexible display module provided in an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0031] In order to make the objectives, technical solutions and advantages of the present application clearer, the following embodiments of the present application will be described in more detail in conjunction with the accompanying drawings.

[0032] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning understood by those skilled in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in the specification and claims described herein do not denote any order, quantity, or importance, but are merely used to distinguish between different components. Similarly, similar terms such as "one" or "an" do not denote a limitation of quantity, but rather indicate the presence of at least one. Similar terms such as "comprise" or "include" mean that the preceding element or entity covers the elements or entities listed immediately before "comprise" or "include," and equivalents thereof, but do not exclude other elements or entities. Similar terms such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "top," "bottom," "left," and "right" are used only to indicate relative positions, and if the absolute positions of the objects being described change, the relative positions may also change accordingly.

[0033] 1 is a structural schematic diagram of a flexible display module provided in an embodiment of the present application. As shown in FIG. 1, the flexible display module includes a flexible display panel 10 and a support 20. The flexible display panel 10 has opposite front and back surfaces, where the front surface is a display surface. The support 20 is located on the back surface of the flexible display panel 10 and is connected to the flexible display panel 10, for example, by a pressure-sensitive adhesive layer 30.

[0034] In some examples, the flexible display module may further include a flexible protective layer 40, which is located on the front surface of the flexible display panel 10, for example, may be adhered to the front surface of the flexible display panel 10. The flexible protective layer 40 may prevent the front surface of the flexible display panel 10 from being damaged from the outside, for example, may prevent the front surface of the flexible display panel 10 from being scratched.

[0035] An embodiment of the present application further provides an electronic device, which includes the flexible display module shown in Figure 1. The electronic device may be, but is not limited to, a mobile phone, a tablet.

[0036] The electronic device is a slide-and-rollable electronic device. The electronic device further includes a winding shaft, and a portion of the flexible display module can be wound around the winding shaft, and the flexible display module can be unwound from the winding shaft by pulling it. For example, as shown in FIG. 1, the flexible display module includes a slide-and-roll portion A, a flat portion B, and an arc portion C. The slide-and-roll portion A can be wound around the winding shaft. The flat portion B and the arc portion C are located outside the winding shaft, and when the display area needs to be increased, the arc portion C can be pulled to unwind the slide-and-roll portion A from the winding shaft.

[0037] The support 20 is used to provide support for the flexible display panel 10, allowing the flexible display module to remain stable and remain flat after being unwound from the reel, and also to be rewound onto the reel.

[0038] 2 is a structural schematic diagram of a support for a flexible display module provided in an embodiment of the present application. As shown in FIG. 2, the support 20 includes a flexible support layer 21 and a plurality of support strips 22. The flexible support layer 21 has opposing first and second surfaces 21a and 21b, where the second surface 21b is used to support the flexible display panel 10. When the flexible display module is assembled, the second surface 21b faces the back surface of the flexible display panel 10.

[0039] The flexible support layer 21 includes a slide-roll region a and a flat support region b adjacent to each other. In the flexible display module, the slide-roll region a is located in the slide-roll portion A, and the flat support region b is located in the flat portion B.

[0040] The flexible support layer 21 may further include an arc region c, which is located on the side of the flat support region b away from the slide-roll region a. In the flexible display module, the arc region c is located at the arc portion C.

[0041] The slide-roll region a, the flat support region b, and the arc region c correspond to the framework of the slide-roll section A, the flat section B, and the arc section C, and provide support for the slide-roll section A, the flat section B, and the arc section C.

[0042] The plurality of support strips 22 are located on the first surface 21a of the flexible support layer 21 and in the slide-roll region a. The plurality of support strips 22 are sequentially arranged along a first direction X away from the planar support region b. The first direction X is parallel to the first surface 21a of the flexible support layer 21 and intersects with the longitudinal direction of the support strips 22. Here, the first direction X being parallel to the first surface 21a of the flexible support layer 21 may be the case when the slide-roll region A is unwound from a reel and flattened.

[0043] Illustratively, the first direction X is perpendicular to the second direction, which is the longitudinal direction of the support strip 22 .

[0044] In the support 20 of the flexible display module, by installing multiple support strips 22 in the slide-roll region a of the flexible support layer 21, the thickness of the support 20 is large and the structural strength is high at the positions where the support strips 22 are present, so that it can perform a better supporting function, and the thickness of the support 20 is small and the structural strength is low at the positions between adjacent support strips 22, so that it is advantageous for winding up the slide-roll region a.

[0045] The thickness of the support 20 refers to the dimension in a direction perpendicular to the first surface 21a when the support 20 is flattened. The thickness direction of the support strip 22 is also perpendicular to the first surface 21a, and the width direction of the support strip 22 is perpendicular to the longitudinal direction and thickness direction of the support strip 22. In this example, the width direction of the support strip 22 is along the first direction X.

[0046] The support strip 22 and the flexible support layer 21 may be an integral structure, for example, the flexible support layer 21 and the support strip 22 may be formed by processing a single plate material. Because of the integral structure, the overall structure of the support 20 is stronger and less susceptible to breakage.

[0047] The support strip 22 and the flexible support layer 21 may be independent structures, for example, the support strip 22 and the flexible support layer 21 are bonded together after the processing of each is completed. Because they are independent structures, they can be processed separately during processing, which makes the processing less difficult.

[0048] The support strip 22 and the flexible support layer 21 can be made of metal materials such as stainless steel, titanium alloy, etc. When the support strip 22 and the flexible support layer 21 are independent structures, the support strip 22 and the flexible support layer 21 can be made of the same or different materials.

[0049] 3 is a side view of the support provided in the embodiment of the present application. As shown in FIG. 3, the ratio of the distance D2 between adjacent support strips 22 in the first direction X to the width D1 of the support strip 22 is 0.5 to 2.

[0050] Increasing the spacing D2 of the support strips 22 reduces the support effect of the support 20 on the slide-roll portion A, while making the spacing D2 too small affects the winding of the slide-roll portion A onto the reel. By setting the spacing D2 of the support strips 22 and the width D1 of the support strips 22 relatively close to each other, the support effect of the support 20 and the winding ability can both be achieved.

[0051] There are also other factors that may affect the support and winding ability of the support 20, such as at least the thickness H2 of the flexible support layer 21, which may affect the support and winding ability of the support 20. Therefore, the ratio of the spacing D2 between adjacent support strips 22 to the width D1 of the support strip 22 may have other values.

[0052] As an example, the width D1 of the support strip 22 may be 0.3 mm to 10 mm, the thickness H1 of the support strip 22 may be 0.2 mm to 3 mm, and the spacing D2 between adjacent support strips 22 may be 0.3 mm to 5 mm.

[0053] As another example, the width D1 of the support strip 22 may be 0.4 mm to 10 mm, the thickness H1 of the support strip 22 may be 0.2 mm to 1 mm, and the spacing D2 between adjacent support strips 22 may be 0.4 mm to 5 mm.

[0054] As yet another example, the width D1 of the support strip 22 may be 0.3 mm to 3 mm, the thickness H1 of the support strip 22 may be 0.2 mm to 3 mm, and the spacing D2 between adjacent support strips 22 may be 0.3 mm to 1 mm.

[0055] In some examples, in the slide-roll region a, the thickness H2 of the flexible support layer 21 is 0.01 mm to 1 mm. For example, the thickness H2 of the flexible support layer 21 is 0.01 mm to 0.05 mm, or the thickness H2 of the flexible support layer 21 is 0.03 mm to 0.2 mm, or the thickness H2 of the flexible support layer 21 is 0.2 mm to 0.9 mm.

[0056] In the slide-roll region a, the flexible support layer 21 is thinly provided, which is advantageous in improving the winding ability of the support 20 and reducing the stress on the support 20 after it is wound.

[0057] 4 is a structural schematic diagram of the support provided in the embodiment of the present application. As shown in FIG. 4, in the slide-roll region a, the flexible support layer 21 has a pattern 211, which includes a plurality of grooves and / or a plurality of through-holes.

[0058] The installation pattern 211 can reduce the rigidity of the flexible support layer 21, which is advantageous for winding up the support 20. The thickness of the flexible support layer 21 and the presence or absence of the pattern 211 can both affect its rigidity. If the thickness is installed too thin, the flexible support layer 21 is prone to tearing. When the pattern 211 is installed, the thickness of the flexible support layer 21 in the slide-roll region a is set slightly larger to improve structural strength and prevent the flexible support layer 21 from tearing in the slide-roll region a.

[0059] For example, in the slide-roll region a, the thickness H2 of the flexible support layer 21 is 0.1 mm to 1 mm.

[0060] For example, as shown in FIG. 4, in the slide-roll region a, the pattern 211 includes a plurality of through holes, which may be strip-shaped, and the longitudinal direction of the through holes is perpendicular to the first direction X.

[0061] The through holes are distributed in a plurality of rows arranged along the first direction X, each row including a plurality of through holes, and the through holes in two adjacent rows may be arranged in a shifted position.

[0062] When the pattern 211 includes grooves, the grooves may be located on the first surface 21a and / or the second surface 21b of the flexible support layer 21. The grooves may also be strip-shaped, and the distribution pattern of the grooves may be the same as the distribution pattern of the through holes described above. The depth of the grooves may be 1 / 3 to 2 / 3 of the thickness H2 of the flexible support layer 21.

[0063] 4, the pattern 211 is located between adjacent support strips 22. Since the support is thicker at the locations where the support strips 22 are present, even if the pattern 211 is also located at the locations where the support strips 22 are present, there is a limit to the improvement in the winding capacity of the support 20. In addition, it may be more economical to provide the pattern 211 only at the locations between adjacent support strips 22.

[0064] For example, the pattern 211 can be formed by an etching process or by numerically controlled machining, such as laser cutting. Since the pattern only needs to be formed in the area between adjacent support strips 22, if an etching process is used, less etching solution is used, and if a numerically controlled machine tool is used for processing, the area that needs to be processed is also smaller, so either method results in low processing costs.

[0065] 5 is a structural schematic diagram of a support provided in an embodiment of the present application. As shown in FIG. 5, in this support, a pattern 211 is located throughout the entire slide-roll region a. Compared to the support shown in FIG. 4, in the support shown in FIG. 5, the pattern 211 is further distributed in the position where the support strip 22 is located. Although the processing cost of this support may be higher, it may be more convenient because it is not necessary to precisely identify the area requiring etching or numerical control processing, and processing can be performed within the entire slide-roll region a.

[0066] 6 is a side view of a support provided in an embodiment of the present application. As shown in FIG. 6, the support has ribs 212 on the second surface 21b of the flexible support layer 21 in an area facing the support strip 22, and the longitudinal direction of the ribs 212 and the longitudinal direction of the support strip 22 are aligned.

[0067] The ribs 212 can improve the support capacity of the flexible support layer 21 to a certain extent, and the ribs 212 are arranged in the area opposite the support strips 22, so that they do not affect the bending ability of the flexible support layer 21 between adjacent support strips 22.

[0068] As shown in FIG. 6, the surface of the rib 212 facing away from the support strip 22 is a convex arc surface.

[0069] The second surface 21b of the flexible support layer 21 is used to support the flexible display panel 10, and the surface of the rib 212 facing away from the support strip 22 is set in a convex arc shape. When the flexible display panel 10 is supported by the convex arc shape during winding, stress on the flexible display panel 10 can be reduced and damage to the flexible display panel 10 can be avoided.

[0070] In the embodiment of the present application, the arc convex surface is a cylindrical surface. That is, the arc convex surface is a curved surface formed by translating a straight line along a circular arc line, and is a part of the surface of a cylinder. For example, the radius of the arc convex surface is 0.5 mm to 5 mm.

[0071] 7 is a side view of a support provided in an embodiment of the present application. As shown in FIG. 7, in this support, the rib 212 includes a top surface 212a and two side surfaces 212b adjacent to the top surface 212a. The top surface 212a is away from the support strip 22, the two side surfaces 212b face each other, and one of the side surfaces 212b is closer to the planar support area b. That is, the top surface 212a is the surface of the rib 212 that is away from the support strip 22, the two side surfaces 212b are aligned in the first direction X, and one of the side surfaces 212b is closer to the planar support area b than the other side surface 212b.

[0072] The connection between the side surface 212b and the top surface 212a has a first rounded corner 212c.

[0073] 6, the first rounded corner 212c can reduce stress on the flexible display panel 10 during winding and prevent damage to the flexible display panel 10. Furthermore, since the top surface 212a supports the flexible display panel 10, a larger contact area can be achieved between the support 20 and the flexible display panel 10, and the bonding area can also be increased during bonding.

[0074] Exemplarily, the radius of the first rounded corner 212c is 0.1 mm to 0.5 mm.

[0075] For example, the cross sections of the support strips 22 shown in Figures 1 to 7 are all rectangular. As another example, Figure 8 is a side view of a support provided in an embodiment of the present application. As shown in Figure 8, the cross section of the support strips 22 is trapezoidal, and the upper base of the trapezoid is farther from the flexible support layer 21. That is, the shorter base of the trapezoid is farther from the flexible support layer 21 than the longer base.

[0076] When the support is wound, adjacent support strips 22 are close to each other, and the smaller the winding radius, the closer they are, so there is a possibility that adjacent support strips 22 will come into contact and be pressed together during winding. By configuring the cross section of the support strips 22 to be trapezoidal, and the bottom base of the trapezoid is connected to the flexible support layer 21, there is a larger space between adjacent support strips 22 during winding, which makes it possible to prevent the support strips 22 from coming into contact and being pressed together.

[0077] Furthermore, when the support strip 22 is wound onto the reel, the surface of the support strip 22 that faces away from the flexible support layer 21 may come into contact with the reel. Because the cross section of the support strip 22 is trapezoidal, the surface of the support strip 22 that faces away from the flexible support layer 21 is small, and the area that comes into contact with the reel is small, which is advantageous in reducing the frictional force between the support strip 20 and the reel.

[0078] For example, the length of the upper base of the trapezoid may be greater than 1 / 3 of the length of the lower base and less than the length of the lower base of the trapezoid.

[0079] For support strips 22 that are trapezoidal in cross section, the width may be the length of the lower base and the thickness may be the height of the trapezoid, i.e., the distance between the lower and upper bases.

[0080] For example, the length of the trapezoidal lower base is 0.3 mm to 3 mm, and for example, the length of the trapezoidal lower base is 0.4 mm to 10 mm.

[0081] 9 is a side view of a support provided in an embodiment of the present application, and as shown in FIG. 9, the support 20 further includes an elastic filler 213, which is located between adjacent support strips 22. The elastic filler 213 connects the flexible support layer 21 and the support strips 22.

[0082] The installation of the elastic filler 213 can provide a certain support for the slide-roll area a, and under the action of the elastic filler 213, a certain distance is always maintained between adjacent support strips 22, improving the stability of the support 20.

[0083] In Figure 9, an example is taken in which the support strips 22 and the flexible support layer 21 are separate structures. For a support having such a structure, the elastic filler 213 always maintains a constant gap between adjacent support strips 22, which is advantageous in preventing the support strips 22 from shifting position during winding and reducing the risk of the support strips 22 being deformed or separated from the flexible support layer 21.

[0084] For supports in which the support strips 22 and the flexible support layer 21 are of one piece, a resilient filler 213 can be placed between adjacent support strips 22 as well.

[0085] The elastic filler 213 can be made of a polymer material having good thermal stability and low elastic modulus, for example, silica gel or thermoplastic polyurethane rubber.

[0086] The thickness of the elastic filler 213 is smaller than that of the support strip 22, and the elastic filler 213 is prevented from being higher than the support strip 22, thereby preventing the elastic filler 213 from coming into contact with the reel during winding and generating a large frictional force.

[0087] As shown in FIG. 9, the surface of the elastic filler 213 that faces away from the flexible support layer 21 is a concave arc surface.

[0088] When the support 20 is wound up, the elastic filler 213 is pressed against the support strips 22 on both sides and deformed. The surface of the elastic filler 213 facing away from the flexible support layer 21 is formed into a concave arc, which is advantageous for deformation of the elastic filler 213 and prevents the generation of large stress.

[0089] When the support 20 is flattened, at the highest point of the concave arc surface, the thickness H3 of the elastic filler 213 is less than the thickness of the support strip 22 and is not less than 1 / 3 of the thickness H1 of the support strip 22, and at the lowest point of the concave arc surface, the thickness H4 of the elastic filler 213 is not more than 2 / 3 of the thickness of the support strip 22 and is not less than 1 / 4 of the thickness of the support strip 22. The highest point of the concave arc surface is the point where the distance from the concave arc surface to the first surface 21 a of the flexible support layer 21 is the greatest, and the lowest point of the concave arc surface is the point where the distance from the concave arc surface to the first surface 21 a of the flexible support layer 21 is the smallest.

[0090] The average thickness of the elastic filler 213 affects the winding ability of the support 20; if the thickness is too large, a large amount of stress is generated during winding, which is detrimental to winding; if the thickness is too thin, the elastic force that the elastic filler 213 can generate is limited, and the contact area with the support strip 22 is small, resulting in little support for adjacent support strips 22.

[0091] FIG. 10 is a partially enlarged schematic view of a support provided in an embodiment of the present application, and as shown in FIG. 10, the side walls 22a of adjacent support strips 22 that are close to each other are all concave.

[0092] By closely adhering the elastic filler 213 to the side wall 22a of the support strip 22 and arranging the side wall 22a of the support strip 22 in a concave shape, the contact area between the elastic filler 213 and the support strip 22 can be increased, the force of the support strip 22 acting on the elastic filler 213 can be more dispersed, and the connection between the elastic filler 213 and the support strip 22 can be made more stable.

[0093] For example, when the support 20 is flattened, the width H5 of the recessed portion of the side wall 22a in the thickness direction of the support strip 22 is 2 / 3 to 1 times the thickness H1 of the support strip 22. The depth D3 of the recess of the side wall 22a is 1 / 5 or less of the width D1 of the support strip 22.

[0094] 11 is a partially enlarged schematic view of a support provided in an embodiment of the present application, in which the cross section of the support strip 22 is trapezoidal, and the upper base of the trapezoid is spaced apart from the flexible support layer 21. The support 20 shown in FIG. 11 has an increased amount of elastic filler 213 compared to the support 20 shown in FIG. 8. The cross section of the support strip 22 is trapezoidal, and the side walls 22a of the support strip 22 are inclined, which is also advantageous in increasing the contact area between the elastic filler 213 and the support strip 22.

[0095] Alternatively, for support strips 22 with a trapezoidal cross section, the side walls 22a may be provided as concave surfaces to further increase the contact area.

[0096] Figure 12 is a partially enlarged schematic view of a support provided in an embodiment of the present application. As shown in Figure 12, in this support, the surface of the support strip 22 adjacent to the flexible support layer 21 is a convex arc, and an elastic filler 213 is located in at least a portion of the convex arc.

[0097] When the support 20 is wound, a certain pressure is generated on the surface of the support strip 22 adjacent to the flexible support layer 21, and the pressure is transmitted to the flexible display panel 10 via the flexible support layer 21. By configuring this surface as a convex arc, the pressure on the flexible display panel 10 is reduced, reducing stress and preventing damage to the flexible display panel 10. When the convex arc surface of the support strip 22 connects with the flexible support layer 21, the contact area is small, making connection difficult. For example, if an adhesive connection is used, the adhesive area is small and the support strip 22 and the flexible support layer 21 are easily separated. An elastic filler 213 covers at least a portion of the convex arc surface and is filled between the convex arc surface and the first surface 21a of the flexible support layer 21, thereby providing a connecting function to make the connection between the support strip 22 and the flexible support layer 21 more solid.

[0098] Illustratively, the radius of the arcuate convex surface is equal to or greater than half the width D1 of the support strip 22.

[0099] 13 is a partially enlarged schematic view of a support provided in an embodiment of the present application, and as shown in FIG. 13, the support has a second rounded corner 221 at the connection point between the surface of the support strip 22 adjacent to the flexible support layer 21 and the side wall 22a of the support strip 22. An elastic filler 213 is located at the second rounded corner 221.

[0100] The second rounded corners 221 also reduce the pressure of the support strip 22 against the flexible display panel 10 during winding, reducing stress and preventing damage to the flexible display panel 10. Compared with the support shown in FIG. 12, the surface of the support strip 22 adjacent to the flexible support layer 21 in FIG. 13 can further increase the contact area between the support strip 22 and the flexible support layer 21, facilitating connection between the two.

[0101] Exemplarily, the radius of the second rounded corner 221 is 0.2 mm to 5 mm.

[0102] 14 is a structural schematic diagram of a support provided in an embodiment of the present application. As shown in FIG. 14, the support further includes a planar support layer 23, which is located in the planar support region b and on the first surface 21a of the flexible support layer 21.

[0103] The planar support layer 23 is used to increase the rigidity of the planar support region b of the flexible support layer 21, so that the support 20 can support the flexible display panel 10 more stably.

[0104] Similar to the support strips 22, the planar support layer 23 and the flexible support layer 21 may be an integral structure, as shown in FIG. 2, or may be separate structures, as shown in FIG. 14. When the planar support layer 23 and the flexible support layer 21 are separate structures, the planar support layer 23 and the flexible support layer 21 may be made of the same or different materials. The planar support layer 23 may be made of a metal material, such as stainless steel or titanium alloy. The thickness of the planar support layer 23 may be the same as that of the support strips 22, so that the overall thickness of the support is more uniform.

[0105] As shown in FIG. 14, the surface of the planar support layer 23 that faces away from the flexible support layer 21 has a receiving groove 23a.

[0106] The receiving groove 23a can be used to receive the flexible circuit board of the flexible display module, which is advantageous for reducing the thickness of the flexible display module.

[0107] For example, the receiving groove 23a may be rectangular, with a width D4 of 20 mm to 200 mm, a length L of 10 mm to 1000 mm, and a depth of 0.2 mm to 2 mm. The length, width, and depth of the receiving groove 23a can be set according to the dimensions of the flexible circuit board to be received.

[0108] As shown in FIG. 14, the support may further include a circular arc support layer 24, which is located on the first surface 21a of the flexible support layer 21 and is located in the circular arc region c.

[0109] Similar to the support strip 22, the arc support layer 24 and the flexible support layer 21 may be integral or independent. When the arc support layer 24 and the flexible support layer 21 are independent, the arc support layer 24 and the flexible support layer 21 may be made of the same or different materials. The arc support layer 24 may be made of a metal material such as stainless steel or titanium alloy. The thickness of the arc support layer 24 may be the same as that of the planar support layer 23 to make the overall thickness of the support more uniform.

[0110] For example, in the arc region c, the total thickness of the arc support layer 24 and the flexible support layer 21 is 0.2 mm or more.

[0111] The embodiments of the present application further provide a method for manufacturing a support of a flexible display module, which is used to manufacture the support shown in Figures 1 to 14. In this manufacturing method, a plurality of support strips 22 are formed on a first surface 21a of a flexible support layer 21 to manufacture the support.

[0112] The flexible support layer 21 has opposing first and second surfaces 21a and 21b, where the second surface 21b is used to support a flexible display panel. A plurality of support strips 22 are located in the slide-and-roll region a, and the plurality of support strips 22 are sequentially arranged along a first direction X away from the planar support region b, where the first direction X is parallel to the first surface 21a and intersects with the longitudinal direction of the support strips 22.

[0113] 15 is a flow chart of a manufacturing method of a support for a flexible display module provided in an embodiment of the present application. As shown in FIG. 15, the manufacturing method includes the following steps:

[0114] In step S11, one plate is provided.

[0115] The support strip 22 and the flexible support layer 21 are integrally formed by processing a single sheet of plate material into the support, which may be a metal plate, such as stainless steel or titanium alloy.

[0116] In step S12, at least one surface of the plate is processed to form a plurality of support strips 22 and a flexible support layer 21.

[0117] For example, etching or numerically controlled machining is used to process the plate material to manufacture the support strip 22. When a partial region of the flexible support layer 21 has a pattern 211, the pattern 211 can be further formed on the flexible support layer 21 by etching, numerically controlled machining, or the like.

[0118] After step S12, elastic fillers 213 may be further formed between adjacent support strips 22. Furthermore, the flexible support layer 21 may be pressed to form arc regions c.

[0119] 16 is a flow chart of a manufacturing method of a support for a flexible display module provided in an embodiment of the present application. As shown in FIG. 16, the manufacturing method includes the following steps:

[0120] In step S21, a flexible support layer 21 and a plurality of support strips 22 are manufactured respectively.

[0121] The support strip 22 and flexible support layer 21 are freestanding supports, and are fabricated as support strip 22 and flexible support 20, respectively.

[0122] For example, both the flexible support layer 21 and the support strip 22 can be manufactured and formed by machining using a numerically controlled machine tool. When a partial region of the flexible support layer 21 has a pattern 211, the pattern 211 can be formed on the flexible support layer 21 by etching, numerically controlled machine tool machining, or the like.

[0123] In step S22, a plurality of support strips 22 are connected to the first surface 21a of the flexible support layer 21.

[0124] Illustratively, the support strip 22 is adhered to the first surface 21 a of the flexible support layer 21 .

[0125] When manufacturing a support 20 that includes an elastic filler 213, for example, when manufacturing the support 20 shown in Figure 12 or Figure 13, the elastic filler 213 can be formed first, and the elastic filler 213 can be used to connect multiple support strips 22 to form a single whole, and then the whole can be adhered to the flexible support layer 21.

[0126] After the bonding is completed, the flexible support layer 21 can be further pressed to form the arc region c.

[0127] The above content is merely a selectable embodiment of the present application and does not limit the present application. Any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and principles of the present application should be included within the scope of protection of the present application. [Explanation of symbols]

[0128] 10 Flexible display panel 20 Flexible support 21 Flexible support layer 22 support strips 23 Planar support layer 24 Arc support layer 30 Pressure-sensitive adhesive layer 40 Flexible Protective Layer 211 Installation Pattern 212 Ribs 213 Elastic Filler

Claims

1. A flexible support layer (21) and a plurality of support strips (22), The flexible support layer (21) has opposing first and second surfaces (21a and 21b), the second surface (21b) being used to support a flexible display panel, the flexible support layer (21) including adjacent slide-roll regions (a) and flat support regions (b), the plurality of support strips (22) being located on the first surface (21a) and the slide-roll region (a), the plurality of support strips (22) being sequentially arranged along a first direction (X) away from the flat support region (b), the first direction (X) being parallel to the first surface (21a) and intersecting the longitudinal direction of the support strips (22). support.

2. In the slide-roll region (a), the flexible support layer (21) has a pattern (211), the pattern (211) including a plurality of grooves and / or a plurality of through holes; The support of claim 1 .

3. The pattern (211) is located between adjacent support strips (22). The support of claim 2.

4. The second surface (21b) has a rib (212) in an area facing the support strip (22), and the longitudinal direction of the rib (212) coincides with the longitudinal direction of the support strip (22). The support of claim 1 .

5. The surface of the rib (212) facing away from the support strip (22) is a convex arc. The support of claim 4.

6. The rib (212) includes a top surface (212a) and two side surfaces (212b) adjacent to the top surface (212a), the top surface (212a) being away from the support strip (22), the two side surfaces (212b) being opposite each other, and one of the side surfaces (212b) being adjacent to the planar support region (b), and a first rounded corner (212c) at a connection point between the side surfaces (212b) and the top surface (212a). The support of claim 4.

7. The cross section of the support strip (22) is trapezoidal, and the upper base of the trapezoid is separated from the flexible support layer (21), or the cross section of the support strip (22) is rectangular. A support according to any one of claims 1 to 6.

8. The support further comprises an elastic filler (213); The elastic filler (213) is located between adjacent support strips (22) and connects the flexible support layer (21) and the support strips (22). A support according to any one of claims 1 to 6.

9. The surface of the elastic filler (213) facing away from the flexible support layer (21) is a concave arc. The support of claim 8.

10. The adjacent side walls (22a) of the adjacent support strips (22) are all concave. The support of claim 7.

11. The surface of the support strip (22) adjacent to the flexible support layer (21) is a convex arc surface, and the elastic filler (213) is located in at least a part of the convex arc surface. The support of claim 8.

12. a second rounded corner (221) at a connection point between the surface of the support strip (22) adjacent to the flexible support layer (21) and the side wall (22a) of the support strip (22), and the elastic filler (213) is located at the second rounded corner (221); The support of claim 8.

13. The support further comprises a planar support layer (23), The planar support layer (23) is located in the planar support region (b) and on the first surface (21a), and the surface of the planar support layer (23) facing away from the flexible support layer (21) has a receiving groove (23a). A support according to any one of claims 1 to 6 and 9 to 12.

14. The flexible support layer (21) further includes an arcuate region (c), the arcuate region (c) being located on a side of the planar support region (b) away from the slide-roll region (a). A support according to any one of claims 1 to 6 and 9 to 12.

15. In the first direction (X), the ratio of the spacing between adjacent support strips (22) to the width of the support strips (22) is 0.5 to 2. A support according to any one of claims 1 to 6 and 9 to 12.

16. forming a plurality of support strips (22) on a first surface (21a) of a flexible support layer (21); the flexible support layer (21) has opposing first and second surfaces (21a) and (21b), the second surface (21b) being used to support a flexible display panel; the flexible support layer (21) including adjacent slide-roll regions (a) and flat support regions (b); the plurality of support strips (22) being located in the slide-roll region (a); the plurality of support strips (22) being sequentially arranged along a first direction (X) away from the flat support region (b), the first direction (X) being parallel to the first surface (21a) and intersecting the longitudinal direction of the support strips (22); Method for manufacturing a support.

17. forming a plurality of support strips (22) on a first surface (21a) of the flexible support layer (21); Providing a plank; machining at least one surface of the plate material to form the plurality of support strips (22) and the flexible support layer (21); Including, The method of claim 16.

18. forming a plurality of support strips (22) on a first surface (21a) of the flexible support layer (21); manufacturing said flexible support layer (21) and said plurality of support strips (22), respectively; connecting the plurality of support strips (22) to a first surface (21a) of the flexible support layer (21); Including, The method of claim 16.

19. A flexible display panel (10) and a support (20) according to any one of claims 1 to 15, The flexible display panel (10) is located on the second surface (21b) of the support (20). Flexible display module.

20. 20. A flexible display module comprising: Electronic devices.

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