Display device and manufacturing method thereof

Abstract

The invention provides a display device and a manufacturing method thereof, and a flexible display module, the display device comprises the flexible display module, the flexible display module comprises a display panel, the display panel comprises a first area and a second area located on at least one side of the first area, a bending part is formed at one end, far away from the first area, of the second area of the display panel; the middle frame is positioned on the back surface of the display panel; wherein at least part of the middle frame is located in a bending space defined by the bending part; the middle frame located in the bending space is provided with a first end portion close to the bending portion, and the first end portion is used for supporting the bending portion.

Description

Technical Field

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

[0002] With the advancement of technology and the improvement of consumers' aesthetic taste, people's requirements for high pixels and high screen-to-body ratio of display terminals are getting higher and higher. Because there are metal traces on the edge of the screen, the number of traces is proportional to the pixels. The higher the pixels, the more traces, resulting in a larger screen frame. Therefore, the existing market has a more urgent demand for compressing the screen frame.

[0003] However, due to the influence of the existing display device structure, the compression of the display frame is subject to certain limitations. Summary of the invention

[0004] The embodiments of the present application provide a display device and a manufacturing method thereof, and a flexible display module, which are used to improve the problems of large borders of existing display devices.

[0005] In a first aspect, a display device is provided, comprising a flexible display module, wherein the flexible display module comprises a display panel, wherein the display panel comprises a first region and a second region located at at least one side of the first region, and a bending portion is formed at one end of the display panel located in the second region away from the first region;

[0006] A middle frame, located on the back of the display panel;

[0007] Among them, at least a part of the middle frame is located in the bending space surrounded by the bending portion; the middle frame located in the bending space has a first end portion close to the bending portion, and the first end portion is used to support the bending portion.

[0008] In combination with the first aspect, in some implementations of the first aspect, a surface of the first end portion facing the bending portion is at least partially a curved surface;

[0009] In combination with the first aspect, in some implementations of the first aspect, a surface of the first end facing the bending portion is a curved surface;

[0010] In combination with the first aspect, in some implementations of the first aspect, an angle between the bent portion and a connection between an end of the second region away from the first region is greater than or equal to 80° and less than or equal to 100°;

[0011] In combination with the first aspect, in some implementations of the first aspect, an angle between the bent portion and a connection between an end of the second region away from the first region is greater than or equal to 87° and less than or equal to 93°;

[0012] In combination with the first aspect, in some implementations of the first aspect, the second area includes a third area and a fourth area, the middle frame is on a side away from the display surface of the display panel, and the third area and the fourth area are respectively connected to two ends of the bent portion;

[0013] In combination with the first aspect, in some implementations of the first aspect, the flexible display module further includes a supporting film layer, and the supporting film layer is located between the middle frame and the display panel;

[0014] In combination with the first aspect, in some implementations of the first aspect, the supporting film layer includes a first supporting film layer, and the first supporting film layer is located between the third area of ​​the display panel and the middle frame;

[0015] In combination with the first aspect, in some implementations of the first aspect, the supporting film layer includes a second supporting film layer, and the second supporting film layer is located between the fourth area of ​​the display panel and the middle frame.

[0016] In combination with the first aspect, in some implementations of the first aspect, a groove parallel to the plane where the first region is located and opening toward the bending portion is formed on the middle frame, the middle frame further includes a first supporting portion and a second supporting portion located on both sides of the groove, the middle frame further includes a connecting portion away from the bending portion, and the first supporting portion and the second supporting portion are respectively connected to the connecting portion;

[0017] Wherein, part of the first supporting portion is located in the bending space;

[0018] Preferably, the display device further comprises an appearance component, wherein the appearance component is arranged on a side of the second supporting portion away from the middle frame and connected to the second supporting portion;

[0019] Preferably, the appearance component and the middle frame are integrated into one design.

[0020] In combination with the first aspect, in some implementations of the first aspect, the flexible display module further includes a first buffer portion, the first buffer portion is located between the display panel and the first end portion, and the first buffer portion includes a plurality of first protrusions facing the first end portion and connected to each other;

[0021] In combination with the first aspect, in some implementations of the first aspect, the first buffer portion is located between a surface of the bending portion facing the first region and the first end portion;

[0022] In combination with the first aspect, in some implementations of the first aspect, the first protrusion extends along a first direction, the first direction is perpendicular to a direction in which the bent portion points to the first end, and the first direction is perpendicular to a thickness direction of the middle frame;

[0023] In combination with the first aspect, in some implementations of the first aspect, the material of the first buffer portion includes at least one of polyimide and polyethylene terephthalate;

[0024] In combination with the first aspect, in some implementations of the first aspect, the first protrusion includes a first surface and a second surface that are arranged opposite to each other, a portion of the first surface is in contact with the first end portion, the second surface is in contact with a surface of the bent portion facing the middle frame, the curvature of the first surface is greater than the curvature of the second surface, the curvature of the second surface is matched with the curvature of the inner side surface of the bent portion, and the larger curvature of the first surface combined with its elastic material can partially absorb and transform the contact stress of the first end portion;

[0025] In combination with the first aspect, in certain implementations of the first aspect, along a cross section perpendicular to the plane where the middle frame is located and extending in a direction from the second area to the first area, the cross-sectional shape of the first protrusion includes at least one of a trapezoid, an arch, and a semicircle.

[0026] In combination with the first aspect, in some implementations of the first aspect, the second area includes a third area and a fourth area, the fourth area is located on a side of the middle frame away from a display surface of the display panel, and the third area and the fourth area are respectively connected to two ends of the bent portion;

[0027] The flexible display module further includes a cover plate and an optical functional structure layer, wherein the cover plate is located on a side of the first region away from the middle frame, and the optical functional structure layer is located between the display panel and the cover plate;

[0028] The display device further comprises an appearance component and a sealing portion, wherein the appearance component is located at a side of the fourth region away from the display panel;

[0029] The flexible display module further includes a fixed adhesive layer, and the fixed adhesive layer is located between the fourth area and the middle frame;

[0030] Part of the sealing portion is located between the cover plate and the appearance component and on a side surface of the bent portion away from the middle frame; part of the sealing portion is filled between the third area and the cover plate and connected to an end of the optical functional structure layer away from the first area; part of the sealing portion is filled between the fourth area and the appearance component and connected to an end of the fixed glue layer away from the first area along the plane where the fixed glue layer is located;

[0031] In combination with the first aspect, in some implementations of the first aspect, the orthographic projection of the sealing portion on the plane where the appearance component is located covers the orthographic projection of the bending portion on the plane where the appearance component is located;

[0032] Alternatively, the orthographic projection of the sealing portion on the plane where the appearance component is located is within the orthographic projection range of the display panel on the plane where the appearance component is located;

[0033] In combination with the first aspect, in some implementations of the first aspect, the fixing adhesive layer covers at least a portion of a surface of a side of the fourth area close to the appearance component;

[0034] In combination with the first aspect, in some implementations of the first aspect, the flexible display module further includes a supporting film layer, the supporting film layer is disposed between the middle frame and the third region and between the middle frame and the fourth region, and the fixing adhesive layer covers at least a portion of a surface of a side of the supporting film layer close to the appearance component;

[0035] In combination with the first aspect, in some implementations of the first aspect, the sealing portion includes a first sealing portion and a second sealing portion connected to each other, and the first sealing portion and the second sealing portion are filled twice;

[0036] Wherein, the first sealing portion includes a first sub-sealing portion, the first sub-sealing portion is located between the cover plate and the third area of ​​the display panel, and is connected to the optical structure functional layer; and / or, the first sealing portion includes a second sub-sealing portion, the second sub-sealing portion is located between the appearance component and the fourth area of ​​the display panel, and is connected to the fixed glue layer;

[0037] In combination with the first aspect, in some implementations of the first aspect, part of the second sealing portion is located between the bending portion and the cover plate, and part of the second sealing portion is located between the bending portion and the appearance component;

[0038] In combination with the first aspect, in some implementations of the first aspect, part of the second sealing portion covers a surface of a side of the bent portion away from the first area; or an end of the second sealing portion away from the first area is flush with an end of the bent portion away from the first area;

[0039] In combination with the first aspect, in some implementations of the first aspect, a surface of one side of the first sub-sealing portion close to the optical structure functional layer is flush with an end of the bent portion close to the first area, and / or a surface of one side of the second sub-sealing portion close to the fixed adhesive layer is flush with an end of the bent portion close to the fourth area;

[0040] In combination with the first aspect, in certain implementations of the first aspect, orthographic projections of at least two of the optically functional structural layers on the cover plate overlap;

[0041] In combination with the first aspect, in certain implementations of the first aspect, at least two of the optical functional structure layers include a polarizer layer and an optical adhesive layer stacked in sequence in a direction away from the middle frame.

[0042] In combination with the first aspect, in some implementations of the first aspect, the flexible display module includes a display area and a frame area arranged around the display area, the display area includes a first area of ​​the display panel, the frame area includes a second area of ​​the display panel, the frame area includes a first frame and a second frame connected to each other, the first frame corresponds to a position of the second area, and the first frame includes a groove area corresponding to the bending portion and protruding areas located on both sides of the groove area;

[0043] The display panel further comprises at least one curved portion, the curved portion being located in the second frame and / or the protruding area; at least a portion of the middle frame is located in a curved space formed by the curved portion, the middle frame located in the curved space has a second end portion close to the curved portion, the second end portion being used to support the curved portion; the curved portion covers a portion of the second end portion;

[0044] In combination with the first aspect, in certain implementations of the first aspect, the flexible display module also includes a second buffer portion, the second buffer portion is located between the display panel and the second end portion, the second buffer portion includes a plurality of second protrusions facing the direction of the second end portion and connected to each other, and the second protrusions abut against a portion of the second end portion.

[0045] In combination with the first aspect, in certain implementations of the first aspect, along the direction from the display area to the border area, the width of the border area is less than or equal to 1 mm.

[0046] In combination with the first aspect, in some implementations of the first aspect, the second area of ​​the display panel includes a third area and a fourth area, the fourth area is located on a side of the middle frame away from the display surface of the display panel, and the third area and the fourth area are respectively connected to two ends of the bent portion; the flexible display module further includes a cover plate, the cover plate is located on a side of the first area of ​​the display panel away from the middle frame; the display device further includes an appearance component, the appearance component is located on a side of the fourth area away from the display panel;

[0047] The flexible display module includes a first frame, and the bending portion is located in the first frame; the middle frame includes at least two protruding portions, and in a direction parallel to the length of the first frame, the two protruding portions are respectively located on both sides of the bending portion;

[0048] Wherein, in a direction perpendicular to the display panel, the thickness of the protruding portion is greater than the thickness of other positions of the middle frame adjacent to the protruding portion;

[0049] In combination with the first aspect, in some implementations of the first aspect, in a direction perpendicular to the display panel, a thickness of the protruding portion is greater than a thickness of the middle frame located between the two protruding portions;

[0050] In combination with the first aspect, in some implementations of the first aspect, the display device further includes an appearance component and a sealing portion, the appearance component is located on a side of the fourth region away from the display panel, and the sealing portion is filled between the cover plate and the appearance component;

[0051] In combination with the first aspect, in some implementations of the first aspect, part of the sealing portion is filled on a side of the middle frame away from the first area along the plane where the middle frame is located;

[0052] In combination with the first aspect, in some implementations of the first aspect, an end of the sealing portion away from the first area covers an end of the protruding portion away from the first area;

[0053] Alternatively, one end of the sealing portion away from the first region is flush with one end of the protruding portion away from the first region;

[0054] In combination with the first aspect, in some implementations of the first aspect, the sealing portion includes a third sealing portion, the third sealing portion contacts a portion of the outer surface of the middle frame along the plane where the middle frame is located away from the first area, and the third sealing portion contacts a side of the bent portion away from the first area.

[0055] In combination with the first aspect, in certain implementations of the first aspect, the flexible display module includes a display area and a border area arranged around the display area, the display area includes a first area of ​​the display panel, the border area includes the middle frame, and the sealing portion is continuously arranged on a side of the middle frame away from the display area along the plane where the middle frame is located.

[0056] In a second aspect, a method for manufacturing a display device is provided, comprising the following steps:

[0057] Provide flexible display modules;

[0058] Providing a middle frame, and placing the middle frame on the back side of the display surface of the flexible display module;

[0059] The flexible display module is bent at the first end of the middle frame to form a bent portion, so that at least a portion of the middle frame is located in a space surrounded by the bent portion, and the first end is used to support the bent portion.

[0060] In conjunction with the second aspect, in some implementations of the second aspect, the step of providing a flexible display module includes:

[0061] A flexible display panel is provided, a region to be bent is preset, and a first buffer portion is prepared on a side of the region to be bent of the flexible display panel away from a display surface of the display panel, wherein the first buffer portion includes a plurality of first protrusions connected to each other and facing away from the display surface of the display panel;

[0062] In combination with the second aspect, in some implementations of the second aspect, the step of bending the flexible display module at the first end of the middle frame to form a bent portion, so that at least part of the middle frame is located in the space enclosed by the bent portion, and the first end is used to support the bent portion, further includes:

[0063] causing the first buffer portion to abut against the first end portion;

[0064] In combination with the second aspect, in some implementations of the second aspect, the flexible display module further includes a third region and a fourth region respectively connected to two ends of the bending portion, the third region and the fourth region are arranged opposite to each other, and the fourth region is located on a side of the middle frame away from the display surface of the display panel;

[0065] After the step of bending the flexible display module at the first end of the middle frame to form a bent portion, so that at least part of the middle frame is located in the space surrounded by the bent portion, and the first end is used to support the bent portion, the method further includes:

[0066] An optical functional structure layer is disposed on a side of the third region away from the middle frame, and a cover plate is disposed on a side of the optical functional structure layer away from the middle frame;

[0067] A fixing adhesive layer is prepared on a side of the fourth region away from the display surface of the display panel, and an appearance component is arranged on a side of the fixing adhesive layer away from the display surface of the display panel;

[0068] Filling glue material between the cover plate and the bending portion, between the appearance component and the bending portion, on the side of the optical functional structure layer away from the first area along the plane where the optical functional structure layer is located, and on the side of the fixed glue layer away from the first area to form a sealing glue portion;

[0069] In combination with the second aspect, in some implementations of the second aspect, the step of filling glue between the cover plate and the bending portion, between the appearance component and the bending portion, on a side of the optical functional structure layer away from the first area along the plane where the optical functional structure layer is located, and on a side of the fixed glue layer away from the first area to form a sealing portion includes:

[0070] Filling glue between the cover plate and the third area to form a first sub-sealing portion connected to the optical structure functional layer;

[0071] Filling glue material between the appearance component and the fourth area to form a second sub-sealing glue portion connected to the fixed glue layer;

[0072] Glue is prepared on a side of the first sub-sealing portion away from the first area, a side of the second sub-sealing portion away from the first area, and at least a portion of the surface of the bent portion away from the middle frame to form a second sealing portion covering at least a portion of the surface of the bent portion away from the first area.

[0073] By setting the bending portion of the flexible display module to bend at the first end of the middle frame, the bending radius of the bending portion of the flexible display module can be increased, which reduces the thickness of the flexible display module while compressing the screen frame, ensures the reliability of the flexible display module, and improves the bending yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0075] Figure 1a It is a top view of a display device in the prior art.

[0076] Figure 1b It is a schematic diagram of the cross-sectional structure of a display device in the prior art.

[0077] Figure 2 Schematic diagram of a top view of a display device in one embodiment of the present application.

[0078] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle frame along the AA' direction.

[0079] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure of the display device along the BB' direction.

[0080] Figure 5 for Figure 2A schematic diagram of the cross-sectional structure of a display device along the BB' direction according to another embodiment of the present invention.

[0081] Figure 6 for Figure 2 A schematic diagram of the cross-sectional structure of a display device along the BB' direction according to another embodiment of the present invention.

[0082] Figure 7 A schematic diagram of the cross-sectional structure of a display device along the BB' direction according to another embodiment of the present invention.

[0083] Figure 8 for Figure 2 A schematic diagram of the cross-sectional structure of the display device along the DD' direction.

[0084] Fig. 9 FIG. 1 is a top view of a display device in an embodiment of the present application.

[0085] Fig.10 for Figure 8 A schematic diagram of the cross-sectional structure of the display device along the FF' direction.

[0086] Fig.11 for Figure 8 A schematic diagram of the cross-sectional structure of a display device along the FF' direction according to another embodiment of the present invention.

[0087] Fig.12 FIG. 1 is a top view of a display device in another embodiment of the present application.

[0088] Fig.13 FIG. 4 is a process flow chart of a method for manufacturing a display device in an embodiment of the present application.

[0089] Fig.14 This is a schematic diagram of the cross-sectional structure of the flexible display module before bending in one embodiment of the present application.

[0090] Fig.15 Schematic diagram of the cross-sectional structure of a flexible display module after bending in one embodiment of the present application.

[0091] Description of reference numerals:

[0092] 10- Flexible display module;

[0093] 100-display panel;

[0094] 101- bending portion;

[0095] 1010- first protrusion;

[0096] 10101-first surface;

[0097] 10102- second surface;

[0098] 1020- second protrusion;

[0099] 11- border;

[0100] 110-cover plate;

[0101] 120- optical structure functional layer;

[0102] 121- optical adhesive layer;

[0103] 122-Polarizer layer;

[0104] 130-supporting film layer;

[0105] 131-first supporting film layer;

[0106] 132-second supporting film layer;

[0107] 140-bend portion;

[0108] 150-fixed adhesive layer;

[0109] 20-middle frame;

[0110] 21- a first end portion;

[0111] 22- protrusion;

[0112] 23- second end;

[0113] 24-connecting part;

[0114] 25- first supporting portion;

[0115] 26- second supporting portion;

[0116] 30-Appearance parts;

[0117] 31- first appearance part;

[0118] 32- second appearance part;

[0119] 40-sealing department;

[0120] 41-first sealing part;

[0121] 411-first sub-sealing part;

[0122] 412-second sub-sealing unit;

[0123] 42- second sealing part;

[0124] 43-the third sealing part;

[0125] 50-Appearance parts-middle frame integrated structure;

[0126] P1 - first area;

[0127] P2 - second area;

[0128] P3-third area;

[0129] P4-the fourth area;

[0130] P5-display area;

[0131] P6-border area;

[0132] P61-first border;

[0133] P611-bulge area;

[0134] P612-groove area;

[0135] P62-Second border. DETAILED DESCRIPTION

[0136] Figure 1a is a top view of a display device in the prior art, Figure 1b Schematic diagram of the cross-sectional structure of a display device in the prior art. Figure 1a and Figure 1b As shown, the display device includes a flexible display module 10, a middle frame 20 and an appearance component 30. The middle frame 20 is located on the back side of the display surface of the flexible display module 10. The appearance component 30 includes two parts, namely a first appearance component 31 located on the side of the middle frame 20 away from the flexible display module 10, and a second appearance component 32 located on the outside of the bending portion 101.

[0137] The flexible display module 10 includes a display panel 100, and a bending portion 101 is formed at one end of the display panel 100. The flexible display module 10 includes a frame 11, and the bending portion 101 is located on the frame 11. Since the driver chip and other areas are distributed on one side of the bending portion 101, the reliability requirement is high, so the frame 11 on the side of the bending portion is difficult to compress. In addition, the thickness of the general appearance part 32 is relatively large, which also increases the size of the frame 11 on the side of the bending portion to a certain extent.

[0138] In view of this, the present application provides a display device and a manufacturing method thereof, and a flexible display module, so as to solve the problem that the curved side frame of the display device in the prior art is large and difficult to compress.

[0139] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. In the following detailed description, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians of the art without making creative work are within the scope of protection of the present application. The features and exemplary embodiments of various aspects of the present application will be described in detail below.

[0140] Figure 2 This is a schematic diagram of a top view of a display device in an embodiment of the present application. Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle frame along the A-A' direction, Figure 4 for Figure 2 The cross-sectional structure diagram of the display device along the BB' direction is shown in FIG. Figures 2 to 4 As shown, the display device includes a flexible display module 10 and a middle frame 20. The flexible display module 10 includes a display panel 100, the display panel 100 includes a first area P1 and a second area P2 located at least on one side of the first area P1, and a bending portion 101 is formed at one end of the display panel 100 located in the second area P2 away from the first area P1; the middle frame 20 is located on the back of the display panel 100; wherein at least part of the middle frame 20 is located in the bending space surrounded by the bending portion 101; the middle frame 20 located in the bending space has a first end 21 close to the bending portion 101, and the first end 21 is used to support the bending portion 101.

[0141] In this embodiment, by bending the bending portion 101 of the flexible display module 10 at the first end portion 21 of the middle frame 20, the bending radius of the bending portion 101 of the flexible display module 10 can be increased, thereby compressing the screen frame and reducing the thickness of the flexible display module 10, thereby ensuring the reliability of the flexible display module 10 and improving the bending yield.

[0142] In one embodiment, the surface of the first end portion 21 facing the bending portion 101 is at least partially curved to better fit the bending portion 101, thereby increasing the contact area with the bending portion 101, dispersing the interaction force between the two, and improving the stability of the flexible display module 10.

[0143] In this embodiment, the second area P2 of the display device uses the middle frame 20 as a hard support. By setting the supporting area of ​​the middle frame 20 to a curved surface matching the bending portion 101, better fitting support can be achieved, eliminating the gap position in the prior art, and the structural stability is better and the yield rate is high.

[0144] Preferably, the surface of the first end portion 21 facing the bending portion 101 is a curved surface. Further preferably, the angle between the bending portion 101 and the end of the second region P2 away from the first region P1 is greater than or equal to 80° and less than or equal to 100°. Even more preferably, the angle between the bending portion 101 and the end of the second region P2 away from the first region P1 is greater than or equal to 87° and less than or equal to 93°.

[0145] In this embodiment, by using the middle frame 20, the middle frame 20 is set to a curved surface matching the bending portion 101, so that the bending portion is well supported, and the angle between the bending portion 101 and the first area P1 away from the display panel is optimized. The bending portion 101 can be bent and transitioned better, so that the angle between the bending portion 101 and the second area P2 away from the first area P1 can be reduced, and the side of the bending portion 101 away from the first end 21 can be approximately vertical, that is, the connection of the second area P2 away from the first area P1 can be approximately vertical, thereby achieving effective compression of the frame of the display device on one side of the bending portion 101 and reducing the width of the frame. In one embodiment, the second area P2 includes a third area P3 and a fourth area P4, and the fourth area P4 is located on the side of the middle frame 20 away from the display surface of the display panel 100, and the third area P3 and the fourth area P4 are respectively connected to the two ends of the bending portion 101. That is, the middle frame 20 is located between the third area P3 and the fourth area P4 of the display panel 100, thereby effectively reducing the thickness of the display device and the flexible display module. The bending portion 101 of the display panel 100 is arranged on the first end portion 21 of the middle frame 20. Due to the support of the middle frame 20, the reliability of the narrow frame technology is improved. Preferably, the flexible display module 10 also includes a supporting film layer 130, and the supporting film layer 130 is located between the middle frame 20 and the display panel 100. Preferably, the supporting film layer 130 is made of an elastic material and is used as a buffer structure between the middle frame 20 and the display panel 100.

[0146] In one embodiment, the supporting film layer 130 includes a first supporting film layer 131, and the first supporting film layer 131 is located between the third area P3 of the display panel 100 and the middle frame 20. Preferably, the supporting film layer 130 includes a second supporting film layer 132, and the second supporting film layer 132 is located between the fourth area P4 of the display panel 100 and the middle frame 20.

[0147] In this embodiment, the first supporting film layer 131 is used to buffer the force between the third area P3 and the middle frame 20, and the second supporting film layer 132 is used to buffer the force between the fourth area P4 and the middle frame 20. By providing a supporting film layer above and below the middle frame 20, the middle frame 20 can better support and protect the display panel 100.

[0148] In one embodiment, the middle frame 20 can be used to fix and support the internal components of the display device. The material of the middle frame 20 includes but is not limited to metal and hard plastic.

[0149] Figure 5 for Figure 2 A schematic diagram of the cross-sectional structure of a display device along the BB' direction according to another embodiment of the present invention.

[0150] In one embodiment, Figure 2 and Figure 5 As shown, the flexible display module 10 also includes a first buffer portion, which is located between the display panel 100 and the first end 21, and includes a plurality of first protrusions 1010 facing the first end 21 and connected to each other. The first buffer portion can provide buffering fixation between the flexible display module 10 and the middle frame 20.

[0151] In one embodiment, the first buffer portion is located between the side surface of the bending portion 101 facing the first area P1 and the first end portion 21, and the first buffer portion can provide buffering fixation between the bending portion 101 and the first end portion 21 of the middle frame 20. Preferably, the first protrusion 1010 extends in a direction parallel to the length of the first frame, that is, in a first direction x, the first direction x is perpendicular to the direction of the bending portion 101 pointing to the first end portion 21, and the first direction x is perpendicular to the thickness direction of the middle frame 20.

[0152] In this embodiment, the first protrusion 1010 extends in the first direction x, and its length is adapted to the length of the bending portion 101 in this direction to ensure that the first protrusion 1010 is provided in the abutment area of ​​the first end portion 21 and the inner side wall of the bending portion 101, thereby ensuring sufficient buffering effect.

[0153] In one embodiment, the material of the first buffer portion includes at least one of polyimide and polyethylene terephthalate.

[0154] In one embodiment, Figure 5 As shown, the display device further includes an appearance member 30 , which is disposed on a side of the fourth area P4 away from the middle frame 20 and serves as a bottom support of the display device.

[0155] In this embodiment, there is a gap between the appearance part 30 and the middle frame 20 for accommodating the fourth area P4 and the supporting film layer 130. Based on this design, the positioning and bonding operations between the appearance part 30 and the middle frame 20 can be reduced, thereby improving assembly efficiency and reducing production costs.

[0156] In one embodiment, Figure 5 As shown, the first protrusion 1010 includes a first surface 10101 and a second surface 10102 that are relatively arranged, the first surface 10101 is in contact with the first end portion 21, and the second surface 10102 is in contact with the surface of the bending portion 101 facing the middle frame 20, and the first surface 10101 and the second surface 10102 are both arc surfaces, wherein the curvature of the first surface 10101 is greater than the curvature of the second surface 10102, and the area of ​​the first surface 10101 is greater than the area of ​​the second surface 10102; the curvature of the second surface 10102 is adapted to the curvature of the surface of the bending portion 101 facing the middle frame 20, so as to evenly distribute the stress to each point on the inner side surface of the bending portion 101, and at the same time, the larger curvature of the first surface 10101 and its elastic material can partially absorb and transform the contact stress of the first end portion 21, thereby reducing the impact on the inner side surface of the bending portion 101 and improving reliability.

[0157] In one embodiment, along a cross section perpendicular to the plane where the middle frame 250 is located and extending from the second area P2 to the first area P1, the cross-sectional shape of the first protrusion 1010 includes at least one of a trapezoid, an arch, and a semicircle.

[0158] Figure 6 for Figure 2 A schematic diagram of the cross-sectional structure of a display device along the BB' direction according to another embodiment of the present invention.

[0159] In one embodiment, Figure 6 As shown, a groove parallel to the plane where the first area P1 is located and opening toward the bending portion 101 is provided on the middle frame 20, and the middle frame 20 also includes a first support portion 25 and a second support portion 26 located on both sides of the groove. The middle frame 20 also includes a connecting portion 24 away from the bending portion 101, and the first support portion 25 and the second support portion 26 are respectively connected to the connecting portion 24; wherein, part of the first support portion 25 is located in the bending space.

[0160] In this embodiment, by providing a groove for accommodating the fourth area P4 on the middle frame 20 , the bent portion 101 can be positioned and fixed more accurately, thereby improving the overall stability of the display device and the yield rate.

[0161] In one embodiment, the display device further includes an appearance member 30, which is disposed on a side of the second support portion 26 away from the middle frame 20 and connected to the second support portion 26. Preferably, the appearance member 30 and the middle frame 20 are integrated. Figure 6 As shown, the second support 26 of the middle frame 20 replaces the appearance part 30, and the appearance part 30 and the middle frame 20 are integrated into one design, thereby forming an appearance part-middle frame integrated structure 50, which can reduce the assembly process, improve production efficiency, and eliminate the problem of debonding or unstable bonding between the appearance part and adjacent components.

[0162] In addition, the display device in the embodiment of the present application is provided with the middle frame 20 as an integrated structure including a groove, which replaces some steps that require bonding and adhesion, and can enhance the reliability of the overall display device, and is particularly suitable for small display devices such as mobile phones.

[0163] Figure 8 for Figure 2 A schematic diagram of the cross-sectional structure of the display device along the DD' direction.

[0164] In one embodiment, Figure 8 As shown, the end surface of the third end portion 27 of the middle frame 20 away from the first area P1 is a vertical plane, which can be directly exposed to the outside after assembly, or can be covered by the sealing portion 40 .

[0165] In this embodiment, through the above configuration, the frame can be compressed to the greatest extent and the frame size can be reduced.

[0166] In one embodiment, Figure 5 , Figure 6 as well as Figure 8 As shown, the flexible display module 10 further includes a cover plate 110 and an optical functional structure layer 120 . The cover plate 110 is located on a side of the first area P1 away from the middle frame 20 , and the optical functional structure layer 120 is located between the display panel 100 and the cover plate 110 .

[0167] In one embodiment, in a direction perpendicular to the thickness of the flexible display module 10, the number of the optical structure functional layers 120 is at least two, at least two optical structure functional layers 120 are located between the display panel 100 and the cover plate 110, and the orthographic projections of at least two optical structure functional layers 120 on the cover plate 110 overlap.

[0168] Preferably, the at least two optical functional structure layers 120 include a polarizer layer 121 and an optical adhesive layer 122 which are sequentially stacked in a direction away from the middle frame 20 .

[0169] In one embodiment, the at least two optical structure functional layers 120 include but are not limited to an optical adhesive layer 121 and a polarizer layer 122 .

[0170] The flexible display module further includes a fixed adhesive layer 150, which is located between the fourth area P4 and the appearance part 30, and covers at least a portion of the surface of the fourth area P4 on one side close to the appearance part 30, and is used to connect and fix the fourth area P4 and the appearance part 30. The supporting film layer 130 is disposed between the middle frame 20 and the third area P3 and between the middle frame 20 and the fourth area P4, and the fixed adhesive layer 150 covers at least a portion of the surface of the supporting film layer 130 on one side close to the appearance part 30.

[0171] In this embodiment, part of the sealing portion 40 is located between the cover plate 110 and the appearance component 30 and is located on the side surface of the bending portion 101 away from the middle frame 20; part of the sealing portion is filled between the third area P3 and the cover plate 110, and is connected to the end of the optical functional structure layer away from the first area P1; part of the sealing portion 40 is filled between the fourth area P4 and the appearance component 30, and is connected to the end of the fixed glue layer 150 away from the first area P1 along the plane where the fixed glue layer 150 is located.

[0172] In one embodiment, the orthographic projection of the sealing part 40 on the plane where the appearance part 30 is located covers the orthographic projection of the bending part 101 on the plane where the appearance part 30 is located, so that the sealing part 40 can better protect the bending part. In an alternative embodiment, the orthographic projection of the sealing part 40 on the plane where the appearance part 30 is located is located within the orthographic projection range of the display panel 100 on the plane where the appearance part 30 is located. In one embodiment, the sealing part 40 includes a first sealing part 41 and a second sealing part 42 connected to each other, and the first sealing part 41 and the second sealing part 42 are filled twice; wherein the first sealing part 41 includes a first sub-sealing part 411, the first sub-sealing part 411 is located between the cover plate 110 and the third area P3 of the display panel 100, and is connected to the optical structure functional layer 120; and / or, the first sealing part 41 includes a second sub-sealing part 412, the second sub-sealing part 412 is located between the appearance part 30 and the fourth area P4 of the display panel 100, and is connected to the fixed glue layer 150.

[0173] In this embodiment, the purpose of the first sealing portion 41 is to fill the gap, which is used to fill the gap between the two ends of the bending portion 101 and the surrounding devices, for example, the step-shaped gap caused by the incomplete overlap of the orthographic projections of at least two optical structure functional layers 120 on the cover plate 110. The purpose of the second sealing portion 42 is to fill. Specifically, after the first sealing portion 41 is filled and solidified, the filling operation of the second sealing portion 42 is performed. Through the two-time filling operation, defects such as difficulty in filling the gap and poor appearance that occur in one-time filling can be avoided. Specifically, the boundary between the first sealing portion 41 and the second sealing portion 42 is a better position to convert the transition position of the plane (i.e., the third area P3 and the fourth area P4) / curved surface (i.e., the bending portion 101) of the display panel 100. The specific position can be slightly adjusted toward or away from the first area P1 according to actual needs to facilitate better operation.

[0174] In one embodiment, part of the second sealing portion 42 is located between the bending portion 101 and the cover plate 110 , and part of the second sealing portion 42 is located between the bending portion 101 and the appearance component 30 .

[0175] In one embodiment, Figure 5 , Figure 6 As shown, part of the second sealing portion 42 covers the side surface of the bending portion 101 away from the first area P1, which can better seal and protect the bending portion 101; or Figure 7 As shown, one end of the second sealing portion 42 away from the first area P1 is flush with one end of the bending portion 101 away from the first area P1, which can compress the frame width to the greatest extent.

[0176] in, Figure 2 and Fig. 9 The top view of the display device is shown in which a part of the second sealing portion 42 covers a surface of a side of the bending portion 101 away from the first area P1 .

[0177] In the actual process, a side surface of the first sub-sealing portion 411 close to the optical structure functional layer 120 is located near one end of the bending portion 101 close to the first area P1, and / or a side surface of the second sub-sealing portion 412 close to the fixed adhesive layer 150 is located near one end of the bending portion 101 close to the fourth area P4.

[0178] In one embodiment, a side surface of the first sub-sealing portion 411 close to the optical structure functional layer 120 is flush with an end of the bending portion 101 close to the first area P1, and / or a side surface of the second sub-sealing portion 412 close to the fixed adhesive layer 150 is flush with an end of the bending portion 101 close to the fourth area P4. In this way, the areas of the two fillings are precisely controlled so that the display device can have a good appearance.

[0179] In one embodiment, the flexible display module 10 further includes a supporting film layer 130, and the supporting film layer 130 is located between the middle frame 20 and the display panel 100. Preferably, the supporting film layer 130 includes a first supporting film layer 131 and a second supporting film layer 132, the first supporting film layer 131 is located between the third area P3 of the display panel 100 and the middle frame 20, and the second supporting film layer 132 is located between the fourth area P4 of the display panel 100 and the middle frame 20.

[0180] In this embodiment, the first supporting film layer 131 and the second supporting film layer 132 can buffer the stress on the display panel 100 , thereby improving the stability and safety of the structure.

[0181] Fig. 9 This is a top view of a display device in an embodiment of the present application. Fig.10 for Fig. 9 The schematic diagram of the cross-sectional structure of the display device along the F-F' direction is shown in FIG. Fig.11 for Fig. 9 A schematic diagram of the cross-sectional structure of a display device along the FF' direction according to another embodiment of the present invention.

[0182] In one embodiment, Figures 9 to 11 As shown, the flexible display module includes a display area P5 and a frame area P6 arranged around the display area, the display area P5 includes the first area P1 of the display panel 100, the frame area P6 includes the second area of ​​the display panel, the frame area P6 includes a first frame P61 and a second frame P62 connected to each other, the first frame P61 corresponds to the position of the first area P1. The first frame includes a groove area P612 corresponding to the bending portion and a protruding area P611 located on both sides of the groove area P612.

[0183] In one embodiment, along the direction from the display area P5 to the border area P6, the width of the border area P6 is less than or equal to 1 mm.

[0184] In one embodiment, Figure 2 , Figure 3 and Fig. 9 As shown, the middle frame 20 includes at least two protrusions 22 . In a direction parallel to the length of the first frame P61 , that is, in the x direction, the two protrusions 22 are respectively located on both sides of the bending portion 101 .

[0185] In one embodiment, in a direction perpendicular to the display panel 100 , the thickness of the protruding portion 22 is greater than the thickness of other positions of the middle frame 20 adjacent to the protruding portion 22 .

[0186] In another embodiment, in the direction perpendicular to the display panel 100, the thickness of the protrusion 22 is greater than the thickness of the middle frame 20 located between the two protrusions 22. The thickness of the middle frame 20 located between the two protrusions 22 is relatively thin, and a step is formed between the middle frame 20 and the two protrusions 22. This area can be used to place the fourth area P4 bent to the back of the display surface of the display panel 100, as well as the second supporting film layer 132 and the fixing adhesive layer 150 and other film layers.

[0187] The display device in this embodiment is provided with protrusions 22 on both sides of the bending portion 101, the purpose of which is to increase the reliability of the display device. For example, when the display device falls during use, the protrusions 22 at both ends can reduce the risk of falling damage and improve reliability. In addition, the presence of the protrusions 22 at both ends also provides a more intuitive glue coating reference line for the sealing portion 40, reducing the risk of problems such as glue overflow and glue leakage.

[0188] In this embodiment, the two inner corners of the two protrusions 22 relative to each other are rounded to facilitate the installation of the device in the groove; the two corners of the two protrusions 22 relative to the outside are right angles. It should be noted that the right angle is not a right angle in the strict sense. A smaller chamfer (not shown in the figure) is prepared on the corners and edges to prevent cutting other parts or operators.

[0189] In this embodiment, the display panel 100 further includes at least one curved portion 140, which is located in the second frame P62 and / or the protruding area P611; at least part of the middle frame 20 is located in the curved space formed by the curved portion 140, and the middle frame 20 located in the curved space has a second end 23 close to the curved portion, and the second end 23 is used to support the curved portion 140. The curved portion 140 covers part of the second end 23, that is, the curved portion 140 does not completely cover the second end 23.

[0190] In one embodiment, the surface of the second end portion 23 at least partially matches the curved surface of the curved portion 140. The surface of the second end portion 23 that matches the curved portion 140 is a curved surface.

[0191] In this embodiment, by setting the flexible display module 10 to bend at the second end 23 of the middle frame 20, the bending radius of the bent portion 140 can be increased, so that the bent portion 140 can be bent at an approximately right angle, thereby achieving effective compression of the frame of the display device on one side of the bent portion 140.

[0192] In one embodiment, the flexible display module further includes a second buffer portion, which is located between the display panel 100 and the second end portion 23. The second buffer portion includes a plurality of second protrusions 1020 facing the second end portion 23 and connected to each other, and the second protrusions 1020 abut against a portion of the second end portion 23. The second protrusions 1020 are consistent with the overall shape and cross-sectional shape of the first protrusions 1010 in the previous embodiment, and are not described in detail here.

[0193] In one embodiment, the material of the second buffer portion is an elastically deformable material, so that the flexible display module 10 can absorb part of the stress during the process of bending to form the bending portion 140 , thereby improving the reliability of the display device.

[0194] In one embodiment, the flexible display module 10 includes more than one bending portion 140, for example, the flexible display module 10 includes three bending portions 140, which are respectively located at the upper, left, and right frames of the flexible display module. In this embodiment, the display device is designed to shrink the middle frame at each frame, and each end is rounded, and a sealing portion is used to replace the appearance parts outside the bending portion 101 and the bending portion 140, so that the frame of the display device is effectively compressed.

[0195] In one embodiment, the material of the second buffer portion includes, but is not limited to, polyimide and polyethylene terephthalate.

[0196] In one embodiment, Figure 3 as well as Fig.12 As shown, one end of the sealing portion 40 away from the first area P1 covers one end of the protrusion 22 away from the first area P1; thus, a good sealing effect and protection of the protrusion can be achieved.

[0197] or, Figure 3 as well as Fig. 9 As shown, one end of the sealing portion 40 away from the first area P1 is flush with one end of the second end protrusion 22 away from the first area P1; in this way, the frame can be further compressed, and while achieving a narrow frame, the morphology of the sealing portion 40 can be better controlled.

[0198] In one embodiment, the sealing portion 40 includes a third sealing portion 43, and the third sealing portion 43 contacts a portion of the outer surface of the middle frame 20 away from the first area P1 along the plane where the middle frame 20 is located, and the third sealing portion 43 contacts a side of the bending portion 140 away from the first area P1. In this way, the uneven bending portion 140 and the second end portion 23 can be made smoother, which is conducive to achieving a good appearance. Among them, the first sealing portion 41 located on the side of the bending portion 140 close to or away from the cover plate 110 is arranged in the same manner as the first sealing portion 41 located on the side of the bending portion 101 close to or away from the cover plate 110 in the previous embodiment, and will not be repeated here. In one embodiment, Fig.10 As shown, part of the third sealing portion 43 covers the side surface of the curved portion 140 away from the first area P1, which can better seal and protect the curved portion 140 and the second end portion 23; or Fig.11 As shown, one end of the third sealing portion 43 away from the first area P1 is flush with one end of the bending portion away from the bent portion 140 away from the first area P1, which can compress the frame width to the maximum extent.

[0199] In one embodiment, the frame area P6 includes a middle frame 20, and the sealing portion 40 is continuously arranged on the side of the middle frame 20 away from the display area P5 along the plane where the middle frame 20 is located. Specifically, the sealing portion 40 is a continuous ring, and the display panel 100 is sealed all around, and is continuously arranged at the second frame P2, the protruding area P611, and the groove area P612. That is, if the second frame P62 and the protruding portion P611 are both provided with a bending portion 140, and the groove area P62 is provided with a bending portion 101, the third sealing portion 43 is continuously arranged with the second sealing portion 42, and the first sub-sealing portion 411 and the second sub-sealing portion 412 in the second frame P62, the protruding portion P611, and the groove area P62 are continuously arranged. Through the above scheme, a narrow frame module within 1 mm can be realized, and the reliability reinforcement of the display device and the flexible display module can be simultaneously realized.

[0200] The display device mentioned in the embodiments of the present application may specifically be: a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or any other product or component with a display function.

[0201] It should be noted that in addition to the display module structure, the display device also includes other necessary components and components, such as a housing, a circuit board, a power cord, etc. Taking a television as an example, the personnel in this field can make corresponding supplements according to the specific use requirements of the electronic device, which will not be repeated here.

[0202] Fig.12 FIG. 1 is a top view of a display device in another embodiment of the present application.

[0203] In one embodiment, Figure 5 , Figure 6 and Fig.12 As shown, a sealing portion 40 is provided on the outer side of the bottom edge of the bending portion 101 and the middle frame, and the second sealing portion 42 filled with glue twice can effectively eliminate defects such as bubbles in the filling process.

[0204] In actual production, it is difficult to avoid a certain bonding tolerance during the bonding process of the optical adhesive layer 121 and the polarizer layer 122. Therefore, there will be some smaller gaps between the optical adhesive layer 121, the polarizer layer 122 and the cover plate 110. By filling the glue and using the first sealing part 41 to fill these small gaps, it is possible to avoid the appearance of multiple small bubbles in the small gaps during the one-time filling of the sealing layer 40, thereby improving the overall reliability of the display device.

[0205] In one embodiment, Fig.12 As shown ( Fig.12 Only the sealing portion 40 in the first frame P61 is shown, and the sealing portion in the second frame P62 is not shown). The sealing portion 40 may extend beyond a portion of the protruding portion 22 (in order to better reflect this effect, Fig.12 That is, the exposed portion of the display device as a whole is the sealing portion 40, thereby avoiding defects such as poor sealing that may be caused by directly exposing the multi-layer structure.

[0206] Fig.13 FIG. 4 is a process flow chart of a method for manufacturing a display device in an embodiment of the present application.

[0207] The present application also provides a method for manufacturing a display device, such as Fig.13 The specific steps are described as follows.

[0208] Step S1210 includes: providing a flexible display module.

[0209] Step S1220 includes: providing a middle frame, and placing the middle frame on the back side of the display panel of the flexible display module.

[0210] Step S1230 includes: bending the flexible display module at the first end of the middle frame to form a bending portion, so that at least part of the middle frame is located in the space surrounded by the bending portion, and the first end is used to support the bending portion.

[0211] In one embodiment, the step of providing a flexible display module includes: providing a flexible display panel, presetting an area that needs to be bent, preparing a first buffer portion on the side of the flexible display panel that needs to be bent away from the display surface of the display panel, the first buffer portion including a plurality of first protrusions that are interconnected and face in a direction away from the display surface of the display panel.

[0212] Specifically, Fig.14 is a schematic diagram of the cross-sectional structure of a flexible display module before bending in one embodiment of the present application, Fig.15 for Fig.14 The cross-sectional structure diagram of the flexible display module after bending is shown in FIG. Fig.14 and Fig.15As shown, the flexible display module 10 includes a display panel 100 and a first buffer portion, the first buffer portion includes a plurality of first protrusions 1010 connected to each other and facing away from the display surface of the display panel, a bending portion 101 is formed at one end of the display panel 100, and the first buffer portion is located on one side of the inner concave surface of the bending portion 101. In one embodiment, in the step of bending the flexible display module at the first end of the middle frame to form the bending portion, so that at least part of the middle frame is located in the space surrounded by the bending portion, and the first end is used to support the bending portion, it also includes: making the first buffer portion abut against the first end.

[0213] In one embodiment, the flexible display module further includes a third region and a fourth region respectively connected to the two ends of the bending portion, the third region and the fourth region are arranged opposite to each other, and the fourth region is located on a side of the middle frame away from the display surface of the display panel.

[0214] In one embodiment, after the step of bending the flexible display module at the first end of the middle frame to form a bending portion, so that at least part of the middle frame is located in the space enclosed by the bending portion, and the first end is used to support the bending portion, it also includes: setting an optical functional structure layer on a side of the third region away from the middle frame, and setting a cover plate on a side of the optical functional structure layer away from the middle frame; preparing a fixed adhesive layer on a side of the fourth region away from the display surface of the display panel, and setting an appearance component on a side of the fixed adhesive layer away from the display surface of the display panel; and filling adhesive material between the cover plate and the bending portion, between the appearance component and the bending portion, on a side of the optical functional structure layer along the plane where the optical functional structure layer is located away from the first region, and on a side of the fixed adhesive layer away from the first region to form a sealing portion.

[0215] In one embodiment, the steps of filling glue between the cover plate and the bending portion, between the appearance part and the bending portion, on the side of the optical functional structure layer along the plane where the optical functional structure layer is located away from the first area, and on the side of the fixed glue layer away from the first area to form a sealing portion include: filling glue between the cover plate and the third area to form a first sub-sealing portion connected to the optical structure functional layer; filling glue between the appearance part and the fourth area to form a second sub-sealing portion connected to the fixed glue layer; and preparing glue on the side of the first sub-sealing portion away from the first area, the side of the second sub-sealing portion away from the first area, and the surface of at least part of the bending portion away from the middle frame, so as to form a second sealing portion covering at least part of the surface of the bending portion away from the first area.

[0216] It should be noted that in the drawings of the present application document, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0217] In addition, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0218] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0219] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A display device, characterized in that: include: A flexible display module, wherein the flexible display module comprises a display panel, wherein the display panel comprises a first area and a second area located at at least one side of the first area, and a bending portion is formed at one end of the display panel located in the second area away from the first area; A middle frame, located on the back of the display panel; Among them, at least a part of the middle frame is located in the bending space surrounded by the bending portion; the middle frame located in the bending space has a first end portion close to the bending portion, and the first end portion is used to support the bending portion.

2. The display device according to claim 1, characterized in that At least part of the surface of the first end portion facing the bending portion is a curved surface; Preferably, the surface of the first end portion facing the bending portion is a curved surface; Preferably, the angle between the bent portion and the connection between the end of the second region away from the first region is greater than or equal to 80° and less than or equal to 100°; Preferably, the angle between the bent portion and the connection between the end of the second region away from the first region is greater than or equal to 87° and less than or equal to 93°; Preferably, the second region includes a third region and a fourth region, the fourth region is located on a side of the middle frame away from the display surface of the display panel, and the third region and the fourth region are respectively connected to two ends of the bending portion; preferably, the flexible display module further includes a supporting film layer, and the supporting film layer is located between the middle frame and the display panel; Preferably, the supporting film layer includes a first supporting film layer, and the first supporting film layer is located between the third area of ​​the display panel and the middle frame; Preferably, the supporting film layer includes a second supporting film layer, and the second supporting film layer is located between the fourth area of ​​the display panel and the middle frame.

3. The display device according to claim 1, characterized in that The middle frame is provided with a groove which is parallel to the plane where the first area is located and opens toward the bending portion, the middle frame further includes a first supporting portion and a second supporting portion located on both sides of the groove, the middle frame further includes a connecting portion away from the bending portion, the first supporting portion and the second supporting portion are respectively connected to the connecting portion; Wherein, part of the first supporting portion is located in the bending space; Preferably, the display device further comprises an appearance component, wherein the appearance component is arranged on a side of the second supporting portion away from the middle frame and connected to the second supporting portion; Preferably, the appearance component and the middle frame are integrated into one design.

4. The display device according to claim 1, characterized in that The flexible display module further includes a first buffer portion, the first buffer portion is located between the display panel and the first end portion, and the first buffer portion includes a plurality of first protrusions facing the first end portion and connected to each other; Preferably, the first buffer portion is located between a side surface of the bent portion facing the first region and the first end portion; Preferably, the first protrusion extends along a first direction, the first direction is perpendicular to the direction of the bending portion pointing to the first end, and the first direction is perpendicular to the thickness direction of the middle frame; Preferably, the material of the first buffer portion includes at least one of polyimide and polyethylene terephthalate; Preferably, the first protrusion includes a first surface and a second surface that are arranged opposite to each other, a portion of the first surface is in contact with the first end portion, the second surface is in contact with a surface of the bent portion facing the middle frame, and an area of ​​the first surface is greater than an area of ​​the second surface; Preferably, along a cross section perpendicular to the plane where the middle frame is located and extending in a direction from the second area to the first area, a cross-sectional shape of the first protrusion includes at least one of a trapezoid, an arch, and a semicircle.

5. The display device according to claim 1, characterized in that The second area includes a third area and a fourth area, the fourth area is located on a side of the middle frame away from the display surface of the display panel, and the third area and the fourth area are respectively connected to two ends of the bending portion; The flexible display module further includes a cover plate and an optical functional structure layer, wherein the cover plate is located on a side of the first region away from the middle frame, and the optical functional structure layer is located between the display panel and the cover plate; The display device further includes an appearance component and a sealing portion, wherein the appearance component is located on a side of the fourth region away from the middle frame; The flexible display module further includes a fixed adhesive layer, and the fixed adhesive layer is located between the fourth area and the appearance component; Part of the sealing portion is located between the cover plate and the appearance component and on a side surface of the bending portion away from the middle frame; part of the sealing portion is filled between the third area and the cover plate and connected to an end of the optical functional structure layer away from the first area; part of the sealing portion is filled between the fourth area and the appearance component and connected to an end of the fixed glue layer away from the first area along the plane where the fixed glue layer is located; Preferably, the orthographic projection of the sealing portion on the plane where the appearance component is located covers the orthographic projection of the bending portion on the plane where the appearance component is located; Alternatively, the orthographic projection of the sealing portion on the plane where the appearance component is located is within the orthographic projection range of the display panel on the plane where the appearance component is located; Preferably, the fixing adhesive layer covers at least a portion of a surface of the fourth area close to a side of the appearance component; Preferably, the flexible display module further comprises a supporting film layer, wherein the supporting film layer is arranged between the middle frame and the third region and between the middle frame and the fourth region, and the fixing adhesive layer covers at least a portion of a surface of a side of the supporting film layer close to the appearance component; Preferably, the sealing portion comprises a first sealing portion and a second sealing portion connected to each other, and the first sealing portion and the second sealing portion are filled twice; Wherein, the first sealing portion includes a first sub-sealing portion, the first sub-sealing portion is located between the cover plate and the third area of ​​the display panel, and is connected to the optical structure functional layer; and / or, the first sealing portion includes a second sub-sealing portion, the second sub-sealing portion is located between the appearance component and the fourth area of ​​the display panel, and is connected to the fixed glue layer; Preferably, part of the second sealing portion is located between the bending portion and the cover plate, and part of the second sealing portion is located between the bending portion and the appearance component; Preferably, part of the second sealing portion covers a surface of a side of the bending portion away from the first region; or, an end of the second sealing portion away from the first region is flush with an end of the bending portion away from the first region; Preferably, a surface of one side of the first sub-sealing portion close to the optical structure functional layer is flush with an end of the bending portion close to the first region, and / or a surface of one side of the second sub-sealing portion close to the fixed adhesive layer is flush with an end of the bending portion close to the fourth region; Preferably, the orthographic projections of at least two of the optical functional structural layers on the cover plate overlap; Preferably, at least two of the optical functional structure layers include a polarizer layer and an optical adhesive layer which are sequentially stacked in a direction away from the middle frame.

6. The display device according to claim 1, characterized in that: The flexible display module includes a display area and a frame area surrounding the display area, wherein the display area includes a first area of ​​the display panel, the frame area includes a second area of ​​the display panel, the frame area includes a first frame and a second frame connected to each other, the first frame corresponds to the position of the second area, and the first frame includes a groove area corresponding to the bending portion and protruding areas located on both sides of the groove area; The display panel further comprises at least one curved portion, the curved portion being located in the second frame and / or the protruding area; at least a portion of the middle frame is located in a curved space formed by the curved portion, the middle frame located in the curved space has a second end portion close to the curved portion, the second end portion being used to support the curved portion; the curved portion covers a portion of the second end portion; Preferably, the flexible display module further comprises a second buffer portion, the second buffer portion is located between the display panel and the second end portion, the second buffer portion comprises a plurality of second protrusions facing the second end portion and connected to each other, and the second protrusions abut against a portion of the second end portion; Preferably, along the direction from the display area to the frame area, the width of the frame area is less than or equal to 1 mm.

7. The display device according to claim 1 or 6, characterized in that: The second area of ​​the display panel includes a third area and a fourth area, the fourth area is located on a side of the middle frame away from the display surface of the display panel, and the third area and the fourth area are respectively connected to two ends of the bending portion; The flexible display module further includes a cover plate, which is located on a side of the first area of ​​the display panel away from the middle frame; the display device further includes an appearance component, which is located on a side of the fourth area away from the display panel; The flexible display module includes a first frame, and the bending portion is located in the first frame; the middle frame includes at least two protruding portions, and in a direction parallel to the length of the first frame, the two protruding portions are respectively located on both sides of the bending portion; Wherein, in a direction perpendicular to the display panel, the thickness of the protruding portion is greater than the thickness of other positions of the middle frame adjacent to the protruding portion; Preferably, in a direction perpendicular to the display panel, the thickness of the protrusion is greater than the thickness of the middle frame located between the two protrusions; Preferably, the display device further comprises an appearance component and a sealing portion, wherein the appearance component is located at a side of the fourth region away from the display panel, and the sealing portion is filled between the cover plate and the appearance component; Preferably, part of the sealing portion is filled on a side of the middle frame away from the first area along the plane where the middle frame is located; Preferably, one end of the sealing portion away from the first area covers one end of the protruding portion away from the first area; Alternatively, one end of the sealing portion away from the first region is flush with one end of the second end away from the first region; Preferably, the sealing portion includes a third sealing portion, the third sealing portion contacts a portion of the outer surface of the middle frame away from the first area along the plane where the middle frame is located, and the third sealing portion contacts a side of the bent portion away from the first area.

8. The display device according to claim 5, characterized in that The flexible display module includes a display area and a frame area arranged around the display area, the display area includes a first area of ​​the display panel, the frame area includes the middle frame, and the sealing portion is continuously arranged on a side of the middle frame away from the display area along the plane where the middle frame is located.

9. A method for manufacturing a display device, characterized in that: The following steps are involved: Provide flexible display modules; Providing a middle frame, and placing the middle frame on the back side of the display panel of the flexible display module; The flexible display module is bent at the first end of the middle frame to form a bent portion, so that at least a portion of the middle frame is located in a space surrounded by the bent portion, and the first end is used to support the bent portion.

10. The method for manufacturing a display device according to claim 9, characterized in that: The step of providing a flexible display module includes: A flexible display panel is provided, a region to be bent is preset, and a first buffer portion is prepared on a side of the region to be bent of the flexible display panel away from a display surface of the display panel, wherein the first buffer portion includes a plurality of first protrusions connected to each other and facing away from the display surface of the display panel; Preferably, the step of bending the flexible display module at the first end of the middle frame to form a bent portion, so that at least part of the middle frame is located in the space surrounded by the bent portion, and the first end is used to support the bent portion, further includes: causing the first buffer portion to abut against the first end portion; Preferably, the flexible display module further comprises a third region and a fourth region respectively connected to two ends of the bending portion, the third region and the fourth region are arranged opposite to each other, and the fourth region is located on a side of the middle frame away from the display surface of the display panel; After the step of bending the flexible display module at the first end of the middle frame to form a bent portion, so that at least part of the middle frame is located in the space surrounded by the bent portion, and the first end is used to support the bent portion, the method further includes: An optical functional structure layer is disposed on a side of the third region away from the middle frame, and a cover plate is disposed on a side of the optical functional structure layer away from the middle frame; A fixing adhesive layer is prepared on a side of the fourth region away from the display surface of the display panel, and an appearance component is arranged on a side of the fixing adhesive layer away from the display surface of the display panel; Filling glue material between the cover plate and the bending portion, between the appearance component and the bending portion, on the side of the optical functional structure layer away from the first area along the plane where the optical functional structure layer is located, and on the side of the fixed glue layer away from the first area to form a sealing glue portion; Preferably, the step of filling glue material between the cover plate and the bending portion, between the appearance component and the bending portion, on a side of the optical functional structure layer away from the first area along the plane where the optical functional structure layer is located, and on a side of the fixed glue layer away from the first area to form a sealing portion includes: Filling glue between the cover plate and the third area to form a first sub-sealing portion connected to the optical structure functional layer; Filling glue material between the appearance component and the fourth area to form a second sub-sealing glue portion connected to the fixed glue layer; Glue is prepared on a side of the first sub-sealing portion away from the first area, a side of the second sub-sealing portion away from the first area, and at least a portion of the surface of the bent portion away from the middle frame to form a second sealing portion covering at least a portion of the surface of the bent portion away from the first area.

Images