Display module and manufacturing method therefor, and display device

Abstract

The present disclosure relates to the technical field of display. Disclosed are a display module and a manufacturing method therefor, and a display device. The display module has a display area and a non-display area, and comprises a flexible display panel, a cover plate, a light shielding layer, and an adhesive layer group. The flexible display panel comprises a display portion and a non-display portion, the non-display portion comprises a bending portion, the bending portion is bent into a curved structure, and the bending portion has a bending line. The cover plate is arranged on a display side of the flexible display panel. The light shielding layer is arranged in the non-display area. The adhesive layer group is adhered between the flexible display panel and the cover plate, and at least one adhesive layer of the adhesive layer group is located on the side of the light shielding layer close to the flexible display panel. The adhesive layer group comprises a protective portion, the orthographic projection of the protective portion on the cover plate is located within the orthographic projection of the light shielding layer on the cover plate, and the protective portion covers the bending line. The display module is not prone to open circuits, and is conducive to narrow bezel configurations.

Description

Display module, preparation method thereof and display device

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to Chinese Patent Application No. 202411296261.2, filed on September 14, 2024, entitled "Display module, preparation method thereof and display device", the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of display, in particular to a display module, a preparation method thereof and a display device. BACKGROUND

[0004] OLED (Organic Electroluminescence Display) display panels have many advantages such as high brightness, low power consumption, fast response, high definition, good flexibility, high luminous efficiency, etc., and can meet the new demands of consumers for display technology.

[0005] However, the OLED display panel can realize a narrow frame appearance by bending part of the non-display area, but local small-radius bending can cause part of the circuit to be disconnected, thereby causing display defects.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] The purpose of the present disclosure is to overcome the shortcomings of the prior art, and to provide a display module, a preparation method thereof and a display device.

[0008] According to one aspect of the present disclosure, a display module having a display area and a non-display area is provided, the display module comprising:

[0009] A flexible display panel comprising a display portion and a non-display portion, the non-display portion comprising a bending portion, the bending portion being bent into a curved structure, the bending portion having a bending line;

[0010] A cover plate provided on the display side of the flexible display panel;

[0011] A light-shielding layer provided in the non-display area;

[0012] An adhesive layer set is adhered between the flexible display panel and the cover plate, and at least one adhesive layer of the adhesive layer set is located on a side of the light-shielding layer close to the flexible display panel, the adhesive layer set comprises a protection part, a projection of the protection part on the cover plate is located within a projection of the light-shielding layer on the cover plate, and the protection part covers the bending starting line.

[0013] In an example embodiment of the present disclosure, the adhesive layer set further comprises a solidification part connected to the protection part, and a storage modulus of the solidification part is greater than a storage modulus of the protection part.

[0014] In an example embodiment of the present disclosure, a difference between the storage modulus of the solidification part and the storage modulus of the protection part is greater than or equal to 30 kPa.

[0015] In an example embodiment of the present disclosure, the display module further comprises:

[0016] A first support layer is arranged on a non-display side of the flexible display panel, and the first support layer extends from the display area to the non-display area.

[0017] The projection of the first support layer on the cover plate overlaps with the projection of the light-shielding layer on the cover plate, and the bending starting line is located on a side of an end surface of the first support layer close to the bending part away from the display area, or the bending starting line is located in the same plane as the end surface of the first support layer close to the bending part.

[0018] Alternatively, the projection of the first support layer on the cover plate does not overlap with the projection of the light-shielding layer on the cover plate, and the protection part covers the bending starting line.

[0019] In an example embodiment of the present disclosure, the light-shielding layer is arranged on a side of the cover plate close to the flexible display panel.

[0020] In an example embodiment of the present disclosure, the adhesive layer set is arranged in a single-layer structure, or the adhesive layer set comprises:

[0021] a base layer;

[0022] a first adhesive layer adhered between the base layer and the cover plate;

[0023] a second adhesive layer adhered between the base layer and the flexible display panel;

[0024] The protection part includes a first protection part and a second protection part, the first protection part is included in the first adhesive layer, and the second protection part is included in the second adhesive layer.

[0025] In an example embodiment of the present disclosure, the adhesive layer group includes:

[0026] The base layer includes a light-transmitting part and a light-blocking part, the light-blocking part is located in the non-display area, and the light-blocking part is the light-blocking layer.

[0027] The first adhesive layer is bonded between the base layer and the cover plate.

[0028] The second adhesive layer is bonded between the base layer and the flexible display panel.

[0029] The protection part is included in the second adhesive layer.

[0030] In an example embodiment of the present disclosure, the adhesive layer group includes:

[0031] The base layer includes a light-transmitting part and a light-blocking part, the light-blocking part is located in the non-display area.

[0032] The first adhesive layer is bonded between the base layer and the cover plate.

[0033] The second adhesive layer is bonded between the base layer and the flexible display panel.

[0034] The light-blocking layer is provided in two layers, the two layers of the light-blocking layer are a first light-blocking layer and a second light-blocking layer, the first light-blocking layer is arranged on the side of the cover plate close to the flexible display panel, the light-blocking part is the second light-blocking layer, and the protection part includes a first protection part and a second protection part.

[0035] In an example embodiment of the present disclosure, the first light-blocking layer has an overlapping projection on the cover plate with the second light-blocking layer, the second light-blocking layer is closer to the display area relative to the first light-blocking layer, the first protection part has a projection on the cover plate within the projection of the second protection part on the cover plate, and the bending line has a projection on the cover plate within the projection of the second light-blocking layer on the cover plate.

[0036] In an example embodiment of the present disclosure, the display module further includes:

[0037] An edge filling portion is arranged in the non-display area and located on the side of the bending portion and the adhesive layer group away from the display area.

[0038] In an example embodiment of the present disclosure, the display module further comprises:

[0039] A bending filling portion is filled in the accommodation space of the bending portion close to the display area.

[0040] In an example embodiment of the present disclosure, the flexible display panel comprises:

[0041] A driving substrate comprises a thinning portion, the thinning portion comprises the bending portion, the thinning portion comprises a first organic layer, a plurality of first connection traces and a second organic layer arranged in sequence, the first connection traces are completely wrapped by the first organic layer and the second organic layer, and the first connection traces extend from the side of the bending portion close to the display area to the bending portion and from the bending portion to the side of the bending portion away from the display area.

[0042] In an example embodiment of the present disclosure, the bending portion further comprises:

[0043] A protective layer is arranged on the side of the second organic layer away from the first connection traces.

[0044] In an example embodiment of the present disclosure, the thinning portion further comprises:

[0045] A third organic layer;

[0046] A second connection trace, the second connection trace is connected in parallel with the first connection trace; the second connection trace is completely wrapped by the first organic layer and the third organic layer, or the second connection trace is completely wrapped by the second organic layer and the third organic layer.

[0047] In an example embodiment of the present disclosure, the thinning portion is provided with a groove, the groove has a groove bottom wall and a groove side wall; the first organic layer comprises a first sub-organic layer and a second sub-organic layer, the first sub-organic layer covers the groove bottom wall, and the second sub-organic layer covers the groove side wall.

[0048] In an example embodiment of the present disclosure, the bending portion further comprises:

[0049] A protective layer is arranged on the side of the second organic layer or the third organic layer away from the first connection traces.

[0050] According to another aspect of the present disclosure, a preparation method of a display module is provided for preparing the display module described in any one of the above, the preparation method comprises:

[0051] A flexible display panel is provided, which includes a display portion and a non-display portion, and the non-display portion includes a bending portion;

[0052] An adhesive layer group is formed on the display side of the flexible display panel;

[0053] A light shielding layer is formed on the non-display area;

[0054] A cover plate is provided, and the cover plate is adhered to the side of the adhesive layer group away from the flexible display panel, and at least one adhesive layer of the adhesive layer group is located on the side of the light shielding layer close to the flexible display panel;

[0055] The adhesive layer group is cured, so that the part of the adhesive layer group blocked by the light shielding layer is not cured to form a protection portion, and the orthographic projection of the protection portion on the cover plate is located within the orthographic projection of the light shielding layer on the cover plate;

[0056] The bending portion is bent into a curved structure, the bending portion has a bending line, and the protection portion covers the bending line.

[0057] In an exemplary embodiment of the present disclosure, a light shielding layer is formed on the non-display area, comprising:

[0058] Before the cover plate is provided, the light shielding layer is formed on the side of the cover plate which needs to be attached to the flexible display panel.

[0059] In an exemplary embodiment of the present disclosure, an adhesive layer group is formed on the display side of the flexible display panel, and a light shielding layer is formed on the non-display area, comprising:

[0060] A second adhesive layer is formed on the display surface of the flexible display panel;

[0061] A base layer is formed on the side of the second adhesive layer away from the flexible display panel, and the base layer includes a light transmission portion and the light shielding layer;

[0062] A first adhesive layer is formed on the side of the base layer away from the flexible display panel.

[0063] In an exemplary embodiment of the present disclosure, the light shielding layer is formed in two layers, and the two layers of the light shielding layer are a first light shielding layer and a second light shielding layer; a light shielding layer is formed on the non-display area, comprising:

[0064] Before the cover plate is provided, the first light shielding layer is formed on the side of the cover plate which needs to be attached to the flexible display panel;

[0065] A second adhesive layer is formed on the display surface of the flexible display panel;

[0066] A base layer is formed on a side of the second adhesive layer away from the flexible display panel, and the base layer comprises a light-transmitting portion and the second light-shielding layer.

[0067] A first adhesive layer is formed on a side of the base layer away from the flexible display panel.

[0068] In an exemplary embodiment of the present disclosure, after the bending portion is bent into a curved structure, the preparation method further comprises:

[0069] A bending filling portion is formed on the accommodating space of the bending portion close to the display area by a mold injection process or a printing process.

[0070] In an exemplary embodiment of the present disclosure, after the bending portion is bent into a curved structure, the preparation method further comprises:

[0071] An edge filling portion is formed on a side of the bending portion and the adhesive layer group away from the display area by a mold injection process or a printing process.

[0072] In an exemplary embodiment of the present disclosure, after the bending portion is bent into a curved structure, the preparation method further comprises curing the protection portion.

[0073] According to still another aspect of the present disclosure, there is provided a display device, comprising: a display module as described in any one of the above.

[0074] In an exemplary embodiment of the present disclosure, an edge portion of the display module is curvedly arranged.

[0075] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0076] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. It is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0077] FIG. 1 is a structural schematic diagram of a first exemplary embodiment of a display module of the present disclosure.

[0078] FIG. 2 is a three-dimensional structural schematic diagram of a flexible display panel in FIG. 1.

[0079] FIG. 3 is a cutaway structural schematic diagram of a display portion of the flexible display panel in FIG. 1.

[0080] FIG. 4 is a schematic diagram of a cross-sectional structure of an example embodiment of the flexible display panel of FIG. 1 when the non-display portion is not bent.

[0081] FIG. 5 is a schematic diagram of a structure provided with a protective layer based on FIG. 4.

[0082] FIG. 6 is a schematic diagram of a cross-sectional structure of another example embodiment of the flexible display panel of FIG. 1 when the non-display portion is not bent.

[0083] FIG. 7 is a schematic diagram of a cross-sectional structure of still another example embodiment of the flexible display panel of FIG. 1 when the non-display portion is not bent.

[0084] FIG. 8 is a schematic diagram of a structure provided with a protective layer based on FIG. 6.

[0085] FIG. 9 is a schematic diagram of a structure provided with a protective layer based on FIG. 7.

[0086] FIG. 10 is a schematic diagram of a structure of a second example embodiment of a display module of the present disclosure.

[0087] FIG. 11 is a schematic diagram of a structure of a third example embodiment of a display module of the present disclosure.

[0088] FIG. 12 is a schematic diagram of a structure of a fourth example embodiment of a display module of the present disclosure.

[0089] FIG. 13 is a schematic diagram of a structure of a fifth example embodiment of a display module of the present disclosure.

[0090] FIG. 14 is a schematic diagram of a structure of a sixth example embodiment of a display module of the present disclosure.

[0091] FIG. 15 is a schematic diagram of a structure of a seventh example embodiment of a display module of the present disclosure.

[0092] FIG. 16 is a schematic diagram of a structure of an eighth example embodiment of a display module of the present disclosure.

[0093] FIG. 17 is a schematic diagram of a structure of a ninth example embodiment of a display module of the present disclosure.

[0094] FIG. 18 is a schematic diagram of a structure of a tenth example embodiment of a display module of the present disclosure.

[0095] FIG. 19 is a schematic diagram of a structure of the flexible display panel in the display module of FIG. 1 when the non-display portion is not bent.

[0096] FIG. 20 is a schematic diagram of a flowchart of a method of manufacturing a display module of the present disclosure.

[0097] FIG. 21 is a schematic diagram of a structure of a display module of the present disclosure for a curved display device.

[0098] Explanation of Reference Numerals: 10, flexible display panel; 101, display part; 102, non-display part; 1021, thinning part; 1021a, groove; 10211, bending part; 10211L, bending line; 1022, binding part; 1, substrate substrate; 2, driving substrate; 21, first insulating layer; 22, barrier layer; 231, channel part; 232, source connection part; 233, drain connection part; 24, second insulating layer; 25, buffer layer; 26, gate insulating layer; 27, gate layer; 271, gate; 272, gate line; 28, interlayer dielectric layer; 29, first connection conductor layer; 291, first source; 292, first drain; 293, relay part; 210, first planarization layer; 211, second connection conductor layer; 2111, second source; 2112, second drain; 2113, first connection trace; 212, second planarization layer; 213, first organic layer; 2131, first sub-organic layer; 2132, second sub-organic layer; 214, second organic layer; 215, protection layer; 216, second connection trace; 217, third organic layer; 3, light-emitting substrate; 31, first electrode; 32, pixel definition layer; 33, light-emitting layer group; 34, second electrode; 4, encapsulation layer group; 5, touch layer group; 51, first touch insulating layer; 52, first touch functional layer; 53, second touch insulating layer; 54, second touch functional layer; 55, touch protection layer; 20, cover plate; 30, light-shielding layer; 30a, first light-shielding layer; 30b, second light-shielding layer; 40, adhesive layer group; 40a, protection part; 40b, solidification part; 40c, adhesive layer; 401, first adhesive layer; 401a, first protection part; 401b, first solidification part; 402, second adhesive layer; 402a, second protection part; 402b, second solidification part; 403, base layer; 4031, light-transmitting part; 4032, light-shielding part; 50, first support layer; 60, edge-filling part; 70, bending-filling part; 80, second support layer; 90, filling interval layer; AA, display area; NAA, non-display area; IC, display driving chip. DETAILED DESCRIPTION

[0099] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, the example embodiments can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Moreover, the figures can not be to scale and some features can be exaggerated to show details of particular implementations. Measures of thicknesses and lengths and the like can not be drawn to scale and can be shown exaggerated or minimized.

[0100] Although relative terms are used in this description, such as "upper," "lower," to describe one component's relationship to another component, these terms are used herein solely for convenience and are not intended to limit the scope of the disclosure, e.g., according to the example shown in the figures. It is to be understood that if a device of the icon is turned over so that what is above is now below, then the components previously described as being "above" would now be "below." Where a structure is "on" another structure, it can mean that the structure is formed integrally with the other structure or that the structure is "directly" on the other structure or that the structure is "indirectly" on the other structure via another structure.

[0101] The terms "one," "a," "an," "the," and "said" are used to mean that "at least one" or "one or more" unless expressly provided otherwise by context. The terms "including," "has," "having" and "comprising" are used herein to mean "including but not limited to." The terms "first," "second," and "third," etc. are used herein to denote different units and do not mean "one," "two," "three," etc. in number.

[0102] In this application, unless otherwise expressly specified and limited, the term "connect" is used broadly and is meant to encompass a direct connection or an indirect connection, for example, through an intermediate medium, and can also mean an integral connection. "And / or" is merely used to represent an associated relationship of associated objects, and means that three relationships can exist, for example, A and / or B, which means that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the front and rear associated objects.

[0103] The display module according to the example embodiments of the present disclosure can include a flexible display panel 10, a cover plate 20, a light shielding layer 30, and an adhesive layer group 40. The flexible display panel 10 can include a display portion 101 and a non-display portion 102. The non-display portion 102 can include a bending portion 10211 bent into a curved structure. The bending portion 10211 has a bending line 10211L. The cover plate 20 is disposed on the display side of the flexible display panel 10. The light shielding layer 30 is disposed in the non-display area NAA. The adhesive layer group 40 is adhered between the flexible display panel 10 and the cover plate 20. At least one adhesive layer 40c of the adhesive layer group 40 is located on the side of the light shielding layer 30 close to the flexible display panel 10. The adhesive layer group 40 can include a protection portion 40a. The orthographic projection of the protection portion 40a on the cover plate 20 is located within the orthographic projection of the light shielding layer 30 on the cover plate 20. The protection portion 40a covers the bending line 10211L.

[0104] The display module of the present disclosure, on the one hand, the protection part 40a is not cured due to being blocked by the light shielding layer 30 before the bending part 10211 is bent, so that the pulling force of the protection part 40a on the bending part 10211 is small when the bending part 10211 is bent, avoiding the bending part 10211 from being torn due to a large pulling force, and also avoiding the wire in the bending part 10211 from being disconnected due to a large pulling force; on the other hand, the position of the bending line 10211L can be accurately controlled by the light shielding layer 30, which is beneficial to the consistency of the preparation process of the display module, and also can control the bending line 10211L of the bending part 10211 to be closer to the display part 101, thereby reducing the width of the flexible display panel 10 in the non-display area NAA, so as to reduce the width of the non-display area NAA, which is beneficial to the narrow frame setting.

[0105] Referring to FIG. 1, the display module has a display area AA and a non-display area NAA, the display area AA is used for displaying a picture, the non-display area NAA cannot display a picture, the non-display area NAA is connected to the display area AA, and the non-display area NAA is arranged on at least one side of the display area AA, for example, the non-display area NAA can be arranged on one side of the display area AA, and the non-display area NAA can also be arranged on two sides, three sides or more sides of the display area AA; in order to achieve a narrow frame setting, it is necessary to reduce the width of the non-display area NAA.

[0106] Referring to FIGS. 1 and 2, the flexible display panel 10 can include a display part 101 and a non-display part 102, the non-display part 102 is connected to the display part 101, and the non-display part 102 is arranged on at least one side of the display part 101, for example, the non-display part 102 can be arranged on one side of the display part 101, and the non-display part 102 can also be arranged on two sides, three sides or more sides of the display part 101.

[0107] The non-display part 102 can include a bending part 10211 and a binding part 1022, the binding part 1022 is connected to the side of the bending part 10211 away from the display part 101. The bending part 10211 is bent into a curved structure, and the bending part 10211 has a bending starting line 10211L, which is a line of the bending part 10211 close to the display part 101. The bending starting line 10211L is generally a straight line, and the bending starting line 10211L can be a physical line formed on the flexible display panel 10, or a virtual line derived according to the bending starting position of the bending part 10211.

[0108] A plurality of binding pins are arranged on the binding portion 1022, the plurality of binding pins can be bound with the circuit board, the binding pins can be bound with the display driving chip IC, various components and connecting wires are arranged on the circuit board, and the detection and control of the flexible display panel 10 are realized through the various components.

[0109] The bending portion 10211 can make the binding portion 1022 and the circuit board located on the non-display side of the flexible display panel 10, thereby reducing the width of the flexible display panel 10 in the non-display area NAA, so as to reduce the width of the non-display area NAA, which is beneficial to the narrow frame setting.

[0110] The flexible display panel 10 can be an OLED (Organic Electroluminescence Display) flexible display panel 10, a QLED (Quantum Dot Light Emitting Diodes) flexible display panel 10, etc.; the flexible display panel 10 has a light-emitting side and a non-light-emitting side, the light-emitting side and the non-light-emitting side are arranged opposite to each other, and the light-emitting side can display a picture, one side of the display picture is a display surface.

[0111] The following will be described taking the OLED flexible display panel 10 as an example.

[0112] In the example embodiment, referring to FIG. 3, the flexible display panel 10 can include a substrate 1, the material of the substrate 1 can include inorganic materials, for example, the inorganic materials can be glass, quartz or metal, etc. The material of the substrate 1 can also include organic materials, for example, the organic materials can be polyimide, polycarbonate, polyacrylate, polyetherimide, polyethersulfone, polyethylene terephthalate and polyethylene naphthalate, etc. The substrate 1 can be formed by a plurality of material layers, for example, the substrate 1 can include a plurality of base material layers, and the material of the base material layer can be any of the above materials. Of course, the substrate 1 can also be provided as a single layer, which can be any of the above materials. The substrate 1 can be flexible, that is, the substrate 1 can also be bent.

[0113] Referring to FIG. 3, the flexible display panel 10 can also include a driving substrate 2 and a light-emitting substrate 3, the driving substrate 2 is arranged on one side of the substrate 1, and the light-emitting substrate 3 is arranged on the side of the driving substrate 2 away from the substrate 1. The driving substrate 2 can include a plurality of driving circuits arranged in an array, the light-emitting substrate 3 can include a plurality of light-emitting devices arranged in an array, and the driving circuits can drive the light-emitting devices to emit light.

[0114] Specifically, referring to FIG. 3, a first insulating layer 21 can be disposed on one side of the substrate 1, and the first insulating layer 21 can be made of an organic material, such as polyimide, polycarbonate, polyacrylate, polyetherimide, or the like.

[0115] A barrier layer 22 can also be disposed on the side of the first insulating layer 21 facing away from the substrate 1, and the barrier layer 22 can be made of an inorganic material, such as silicon, silicon oxide, silicon nitride, silicon oxynitride, or the like. The barrier layer 22 can function to block moisture and impurity ions in the substrate 1 (particularly, the organic material), and to add hydrogen ions to the active layer formed later. Depending on the type of substrate or process conditions, the barrier layer 22 can be omitted.

[0116] An active layer can be disposed on the side of the barrier layer 22 facing away from the substrate 1, and the active layer can include a channel portion 231 and conductor portions disposed at both ends of the channel portion 231. One of the two conductor portions can be a source connection portion 232, and the other can be a drain connection portion 233. A second insulating layer 24 can be disposed on the side of the active layer facing away from the substrate 1, and the second insulating layer 24 can be made of an organic material, such as polyimide, polycarbonate, polyacrylate, polyetherimide, or the like.

[0117] A buffer layer 25 can be disposed on the side of the second insulating layer 24 facing away from the substrate 1, and the buffer layer 25 can be made of an inorganic material, such as silicon, silicon oxide, silicon nitride, silicon oxynitride, or the like. A gate insulating layer 26 can be disposed on the side of the buffer layer 25 facing away from the substrate 1, and the gate insulating layer 26 can be made of an inorganic material, such as silicon, silicon oxide, silicon nitride, silicon oxynitride, or the like. A gate layer 27 can be disposed on the side of the gate insulating layer 26 facing away from the substrate 1, and the gate layer 27 can include a gate 271 and a gate line 272.

[0118] An interlayer dielectric layer 28 is provided on the side of the gate layer 27 facing away from the substrate 1. The interlayer dielectric layer 28 is made of an inorganic material, such as silicon, silicon oxide, silicon nitride, silicon oxynitride, or the like. The interlayer dielectric layer 28 can be provided in one layer or two layers. Connection vias are provided in the interlayer dielectric layer 28, the gate insulating layer 26, the buffer layer 25, and the second insulating layer 24, and the connection vias are connected to the source connection portion 232 and the drain connection portion 233. A first connection conductor layer 29 is provided on the side of the interlayer dielectric layer 28 facing away from the substrate 1. The first connection conductor layer 29 can include a first source 291, a first drain 292, and a data line (not shown in the figure). The data line can be connected to the first source 291, or a part of the data line can serve as the first source 291. The first source 291 is connected to the source connection portion 232 through the connection vias, and the first drain 292 is connected to the drain connection portion 233 through the connection vias.

[0119] A first planarization layer 210 is provided on the side of the first connection conductor layer 29 facing away from the substrate 1. The first planarization layer 210 can be made of an organic material, such as polyimide, polycarbonate, polyacrylate, or the like. Connection vias are also provided in the first planarization layer 210. A second connection conductor layer 211 is provided on the side of the first planarization layer 210 facing away from the substrate 1. The second connection conductor layer 211 can include a second source 2111 and / or a second drain 2112. The second source 2111 and the second drain 2112 are connected to the first source 291 and the first drain 292, respectively, through the connection vias in the first planarization layer 210. Of course, a third connection conductor layer, a fourth connection conductor layer, or the like can also be provided as needed.

[0120] Please continue to refer to FIG. 3, a second planarization layer 212 is provided on the side of the second connection conductor layer 211 facing away from the substrate 1. The second planarization layer 212 can be made of an organic material, such as polyimide, polycarbonate, polyacrylate, or the like. Connection vias are provided in the second planarization layer 212, and the connection vias are connected to the second drain 2112. The channel portion 231, the gate 271, the first source 291, and the first drain 292 form a thin film transistor.

[0121] It should be noted that the thin film transistor described in the present specification is a top-gate thin film transistor. In other example embodiments of the present disclosure, the thin film transistor can also be a bottom-gate thin film transistor or a dual-gate thin film transistor, and the specific structure thereof will not be described here. Moreover, in the case of using a thin film transistor with opposite polarity or in the case of a change in the current direction in the operation of the circuit, the functions of the “source” and the “drain” are sometimes exchanged with each other. Therefore, in the present specification, the “source” and the “drain” can be exchanged with each other.

[0122] Please continue to refer to FIG. 3, the light-emitting substrate 3 is arranged on the side of the second planarization layer 212 away from the substrate substrate 1, and the light-emitting substrate 3 can include a first electrode 31, a pixel definition layer 32, a light-emitting layer group 33, and a second electrode 34.

[0123] Specifically, the first electrode 31 is arranged on the side of the second planarization layer 212 away from the substrate substrate 1, and the first electrode 31 is connected to the second drain 2112 of the driving backplane through a via hole, and the first electrode 31 is provided with a driving signal through the second drain 2112. The first electrode 31 can be an anode (pixel electrode).

[0124] The pixel definition layer 32 is arranged on the side of the first electrode 31 away from the substrate substrate 1, and the pixel definition layer 32 is provided with an opening part, which is communicated to the first electrode 31, that is, at least part of the first electrode 31 is not covered by the pixel definition layer 32. The pixel definition layer 32 can be made of a black material capable of absorbing photons, for example, the material of the pixel definition layer 32 can be black ink; the stray light can be absorbed by the pixel definition layer 32, and the display effect is improved.

[0125] The light-emitting layer group 33 is arranged on the side of the first electrode 31 away from the substrate substrate 1, and at least part of the light-emitting layer group 33 is located in the opening part. The second electrode 34 is arranged on the side of the light-emitting layer group 33 away from the substrate substrate 1, and the second electrode 34 can be a cathode (common electrode).

[0126] The light-emitting layer group 33 can include a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, and an electron injection layer arranged in sequence, the hole injection layer is in contact with the first electrode 31, and the electron injection layer is in contact with the second electrode 34. Of course, in other example embodiments of the present disclosure, the light-emitting layer group 33 can only include a hole transport layer, a light-emitting layer, and an electron transport layer, and the light-emitting layer group 33 can also be other structures, and the specific structure can be set as needed.

[0127] Holes are injected into the organic light-emitting layer from the side of the first electrode 31, and electrons are injected into the organic light-emitting layer from the side of the second electrode 34, and finally the holes and the electrons recombine in the organic light-emitting layer to generate excitons. When the generated excitons relax from the excited state to the ground state, the OLED emits visible light.

[0128] The flexible display panel 10 can further include an encapsulation layer group 4 disposed on a side of the light-emitting substrate 3 away from the base substrate 1. For example, the encapsulation layer group 4 can include a first inorganic layer, an organic layer, and a second inorganic layer. The first inorganic layer is disposed on a side of the second electrode 34 away from the base substrate 1. The first inorganic layer can be made of silicon nitride (SiNx), silicon oxynitride (SiNO), or the like. The organic layer is disposed on a side of the first inorganic layer away from the base substrate 1. The organic layer can be made of an organic material such as acrylic or epoxy. The second inorganic layer is disposed on a side of the organic layer away from the base substrate 1. The second inorganic layer can be made of silicon nitride (SiNx), silicon oxynitride (SiNO), or the like. The encapsulation layer group 4 can encapsulate the light-emitting layer group 33 to prevent corrosion by water / oxygen in the air.

[0129] In some example embodiments of the present disclosure, referring to FIG. 3, the flexible display panel 10 can further include a touch layer group 5 disposed on a side of the encapsulation layer group 4 away from the base substrate 1. The touch layer group 5 enables the flexible display panel 10 to have a touch function.

[0130] The touch layer group 5 can include a first touch insulating layer 51, a first touch functional layer 52, a second touch insulating layer 53, a second touch functional layer 54, and a touch protective layer 55. The first touch insulating layer 51 is disposed on a side of the encapsulation layer group 4 away from the base substrate 1. The first touch functional layer 52 is disposed on a side of the first touch insulating layer 51 away from the base substrate 1. The second touch insulating layer 53 is disposed on a side of the first touch functional layer 52 away from the base substrate 1. The second touch functional layer 54 is disposed on a side of the second touch insulating layer 53 away from the base substrate 1. The touch protective layer 55 is disposed on a side of the second touch functional layer 54 away from the base substrate 1. The touch protective layer 55 can protect the second touch functional layer 54. Of course, the touch layer group 5 can not be provided.

[0131] The above is the structure of the display portion 101 of the flexible display panel 10. Part of the film layers of the display portion 101 extend to the bending portion 10211 to form the specific structure of the bending portion 10211. The bending portion 10211 is mainly used to connect the display portion 101 and the binding portion 1022 through the connection traces. Therefore, part of the film layers of the driving substrate 2 extend to the bending portion 10211 to form the specific structure of the bending portion 10211. That is, the driving substrate 2 includes the bending portion 10211.

[0132] Referring to FIGS. 4 and 5, the bending portion 10211 needs to be bent, and thus the thickness of the bending portion 10211 is set to be thin to smoothly perform the bending, that is, the bending portion 10211 is set to be thin. In order to ensure the smooth bending of the bending portion 10211, a portion of the bending portion 10211 near one side of the display portion 101 and a portion of the bending portion 10211 away from the other side of the display portion 101 also need to be set to be thin, and the portions set to be thin form a thinning portion 1021. The thinning portion 1021 is included in the driving substrate 2, and the thinning portion 1021 includes the bending portion 10211.

[0133] The thinning portion 1021 can include the first organic layer 213, the plurality of first connection traces 2113, and the second organic layer 214 sequentially stacked. The first connection traces 2113 are completely wrapped by the first organic layer 213 and the second organic layer 214, such that any part of the first connection traces 2113 is not directly connected to an inorganic material. The material of the first organic layer 213 and the material of the second organic layer 214 are both organic materials, and the modulus of the organic material is small, which is easy to deform, that is, the organic material is easy to bend, so that the bending portion 10211 is easy to bend. The organic material can also absorb the stress generated when the first connection traces 2113 are bent, avoiding the first connection traces 2113 from being broken due to long-term bending.

[0134] The first connection traces 2113 extend from one side of the bending portion 10211 near the display area AA to the bending portion 10211, and extend from the bending portion 10211 to the other side of the bending portion 10211 away from the display area AA.

[0135] Specifically, referring to FIGS. 4 and 5, the thinning portion 1021 can include the first insulating layer 21, the barrier layer 22, the second insulating layer 24, the first connection traces 2113, and the second planarization layer 212 sequentially stacked. That is, the thinning portion 1021 is formed by removing the recess 1021a formed by removing the active layer, the buffer layer 25, the gate insulating layer 26, the gate electrode layer 27, the interlayer dielectric layer 28, the first connection conductor layer 29, and the like. That is, the thinning portion 1021 is provided with the recess 1021a, and the recess 1021a has a groove bottom wall and a groove side wall.

[0136] The first organic layer 213 can include a first sub-organic layer 2131 and a second sub-organic layer 2132, the first sub-organic layer 2131 covering the groove bottom wall, and the second sub-organic layer 2132 covering the groove side wall; specifically, the second insulating layer 24 is the first sub-organic layer 2131, that is, the second insulating layer 24 covers the groove bottom wall of the recess 1021a as the first sub-organic layer 2131; the first planarization layer 210 is the second sub-organic layer 2132, that is, the groove side wall of the recess 1021a covers the first planarization layer 210, and specifically, the side wall of the buffer layer 25, the side wall of the gate insulating layer 26, and the side wall of the interlayer dielectric layer 28 are all covered by the first planarization layer 210. A part of the first connection wire 2113 is arranged on the side of the first planarization layer 210 away from the display part 101, and the first connection wire 2113 can be prevented from contacting the side wall of the buffer layer 25, the side wall of the gate insulating layer 26, and the side wall of the interlayer dielectric layer 28 through the first planarization layer 210.

[0137] The second planarization layer 212 is the second organic layer 214, that is, the second planarization layer 212 serves as the second organic layer 214.

[0138] Of course, in some other example embodiments of the present disclosure, the first planarization layer 210 can also be the first organic layer 213, that is, the first planarization layer 210 also covers the groove bottom wall of the recess 1021a.

[0139] It should be noted that since the recess 1021a can be formed through at least two times of patterning processes, the groove side wall of the recess 1021a can be uneven and form a stepped structure, for example, the buffer layer 25 can protrude the gate insulating layer 26 by about 12 microns, in order to ensure the covering effect of the first organic layer 213 on the groove side wall of the recess 1021a and prevent the first organic layer 213 from being damaged in the long-term use, the minimum covering thickness of the first organic layer 213 is about 5 microns, that is, the minimum covering thickness of the first planarization layer 210 is about 5 microns.

[0140] Taking the gate line 272 as an example to illustrate the connection structure of the first connection wire 2113, the gate line 272 can extend to the non-display part 102 between the display part 101 and the thinning part 1021, and the first connection conductor layer 29 can further include a transition part 293 connected to the gate line 272 through a via on the interlayer dielectric layer 28. The second connection conductor layer 211 can include the first connection wire 2113, and the first connection wire 2113 is connected to the transition part 293 through a via on the first planarization layer 210, so as to realize the connection between the gate line 272 and the first connection wire 2113. The gate signal 271 can be transmitted to the gate line 272 through the first connection wire 2113 and then transmitted to the gate 271 through the gate line 272. Of course, the first connection wire 2113 can be connected with display signal lines such as data lines, touch signal lines, and the like, which will not be described one by one here.

[0141] Alternatively, referring to FIG. 5, the bending part 10211 can further include a protective layer 215 arranged on the side of the second organic layer 214 away from the first connection trace, which can be formed by extending the touch protective layer 55 to the bending part 10211. The protective layer 215 can be made of an organic material, for example, acrylic, epoxy resin, etc. The thickness of the protective layer 215 is greater than or equal to 0.5 microns and less than or equal to 5 microns, for example, the thickness of the protective layer 215 can be 1 micron, 1.5 microns, 2 microns, 2.5 microns, 3 microns, 3.5 microns, 4 microns, 4.5 microns, etc. The protective layer 215 can play the role of stress neutral layer adjustment, that is, to make the first connection trace 2113 a stress neutral layer or closer to the stress neutral layer, thereby reducing the tensile strain of the first connection trace 2113, improving the impact resistance and bending resistance of the first connection trace 2113, etc.

[0142] Referring to FIGS. 6 and 7, in some other example embodiments of the present disclosure, the connection trace can be provided in a double-layer structure, specifically, the thinned part 1021 can further include a third organic layer 217 and a second connection trace 216, the second connection trace 216 is connected in parallel with the first connection trace 2113; so that in the case of any one of the second connection trace 216 or the first connection trace 2113 being broken, the other one can still transmit signals, ensuring the stability of signal transmission; in the case that neither the second connection trace 216 nor the first connection trace 2113 is broken, the resistance can be reduced, thereby reducing power consumption.

[0143] Referring to FIG. 6, the second connection trace 216 can be arranged between the second organic layer 214 and the third organic layer 217, and the second connection trace 216 is completely wrapped by the second organic layer 214 and the third organic layer 217, so that any part of the second connection trace 216 is not directly connected with inorganic material; the material of the second organic layer 214 and the material of the third organic layer 217 are both organic materials, which have small modulus and are easy to deform, that is, the organic material is easy to be bent, so that the bending part 10211 is easy to be bent; the organic material can also absorb the stress generated when the second connection trace 216 is bent, avoiding the second connection trace 216 from being broken due to long-time bending. The second connection trace 216 and the first connection trace 2113 can be connected in parallel through a via hole on the second organic layer 214.

[0144] For example, the second connection trace 216 is arranged on the side of the second organic layer 214 away from the substrate 1, and the third organic layer 217 is arranged on the side of the second connection trace 216 away from the substrate 1, the second organic layer 214 can be formed by a separate patterning process, and the third organic layer 217 can be formed by extending the second planarization layer 212 to the non-display part 102.

[0145] Referring to FIG. 7, the second connection trace 216 can be disposed between the first organic layer 213 and the third organic layer 217, and the second connection trace 216 is completely wrapped by the first organic layer 213 and the third organic layer 217, so that any part of the second connection trace 216 is not directly connected with inorganic material; the material of the first organic layer 213 and the material of the third organic layer 217 are both organic material, and the modulus of the organic material is small, which is easy to deform, that is, the organic material is easy to be bent, so that the bending part 10211 is easy to bend; the organic material can also absorb the stress generated when the second connection trace 216 is bent, avoiding the second connection trace 216 from breaking due to long-term bending. The second connection trace 216 and the first connection trace 2113 can be connected in parallel through the via on the first organic layer 213.

[0146] For example, the second connection trace 216 is disposed on the side of the first organic layer 213 close to the substrate 1, and the third organic layer 217 is disposed on the side of the second connection trace 216 close to the substrate 1; the second connection trace 216 can be formed by a patterning process alone, and the third organic layer 217 can be formed by extending the first insulating layer 21 to the non-display part 102; in addition, the barrier layer 22 is also removed, and the sidewall of the barrier layer 22 also forms part of the groove sidewall of the groove 1021a, and the sidewall of the barrier layer 22 is covered by the second insulating layer 24.

[0147] Alternatively, referring to FIGS. 8 and 9, in the case of a double-layer structure of the connection trace, a protective layer 215 can also be provided; referring to FIG. 8, the protective layer 215 can be disposed on the side of the third organic layer 217 away from the first connection trace; referring to FIG. 9, the protective layer 215 can be disposed on the side of the second organic layer 214 away from the first connection trace. The protective layer 215 can be formed by extending the touch protective layer 55 to the bending part 10211. The material of the protective layer 215 can be organic material, for example, acrylic, epoxy resin, etc. The thickness of the protective layer 215 is greater than or equal to 0.5 microns and less than or equal to 5 microns, for example, the thickness of the protective layer 215 can be 1 micron, 1.5 microns, 2 microns, 2.5 microns, 3 microns, 3.5 microns, 4 microns, 4.5 microns, etc. Similarly, the protective layer 215 can play the role of stress neutral layer adjustment, that is, making the first connection trace 2113 or the second connection trace 216 a stress neutral layer, or making the first connection trace 2113 and the second connection trace 216 closer to the stress neutral layer, thereby reducing the tensile strain of the first connection trace 2113 and the second connection trace 216, improving the impact resistance and bending resistance of the first connection trace 2113, etc.

[0148] Please continue to refer to FIG. 1, the adhesive layer group 40 is arranged on the display side of the flexible display panel 10, and the cover plate 20 is arranged on the side of the adhesive layer group 40 away from the flexible display panel 10; specifically, the adhesive layer group 40 is arranged on the display surface of the flexible display panel 10, and the cover plate 20 is arranged on the side of the adhesive layer group 40 away from the flexible display panel 10; so that the cover plate 20 is arranged on the display side of the flexible display panel 10, the adhesive layer group 40 is adhered between the flexible display panel 10 and the cover plate 20, that is, the flexible display panel 10 and the cover plate 20 are directly adhered through the adhesive layer group 40, and no polarizer is arranged between the flexible display panel 10 and the cover plate 20.

[0149] In the example embodiment, the light shielding layer 30 is arranged on the side of the cover plate 20 close to the flexible display panel 10, and the light shielding layer 30 is located in the non-display area NAA.

[0150] At least one adhesive layer 40c of the adhesive layer group 40 is located on the side of the light shielding layer 30 close to the flexible display panel 10, for example, in the case where the adhesive layer group 40 includes one adhesive layer 40c, the adhesive layer 40c is located on the side of the light shielding layer 30 close to the flexible display panel 10; in the case where the adhesive layer group 40 includes two adhesive layers 40c, one or two adhesive layers 40c can be located on the side of the light shielding layer 30 close to the flexible display panel 10; in the case where the adhesive layer group 40 includes three adhesive layers 40c, one, two or three adhesive layers 40c can be located on the side of the light shielding layer 30 close to the flexible display panel 10. The adhesive layer group 40 can also include more adhesive layers 40c, which will not be described one by one.

[0151] The adhesive layer group 40 can include a protection part 40a, and the orthographic projection of the protection part 40a on the cover plate 20 is located within the orthographic projection of the light shielding layer 30 on the cover plate 20; for example, all the edge lines of the orthographic projection of the protection part 40a on the cover plate 20 can coincide with all the edge lines of the orthographic projection of the light shielding layer 30 on the cover plate 20; or the edge line of the orthographic projection of the protection part 40a on the cover plate 20 close to the display area AA can coincide with the edge line of the orthographic projection of the light shielding layer 30 on the cover plate 20 close to the display area AA, and the other edge lines of the orthographic projection of the protection part 40a on the cover plate 20 are located inside the other edge lines of the orthographic projection of the light shielding layer 30 on the cover plate 20.

[0152] The protection part 40a covers the bending starting line 10211L. For example, the bending starting line 10211L can coincide with the edge line of the protection part 40a close to the display area AA, or the bending starting line 10211L can be located between the edge line of the protection part 40a close to the display area AA and the edge line of the protection part 40a away from the display area AA, so that the bending starting line 10211L is closer to the display area AA relative to the edge line of the protection part 40a away from the display area AA. Specifically, the distance between the bending starting line 10211L and the edge line of the protection part 40a away from the display area AA is greater than 0 and less than or equal to 0.2 mm. For example, the distance between the bending starting line 10211L and the edge line of the protection part 40a away from the display area AA can be 0.02 mm, 0.05 mm, 0.07 mm, 0.1 mm, 0.13 mm, 0.15 mm, 0.18 mm, etc.

[0153] Before the bending of the bending part 10211, the protection part 40a is not cured due to being blocked by the light shielding layer 30, so that when the bending part 10211 is bent, the pulling force of the protection part 40a on the bending part 10211 is small, which can avoid the tearing of the bending part 10211 due to a large pulling force, and also can avoid the disconnection of the wire in the bending part 10211 due to a large pulling force.

[0154] In addition, the position of the bending starting line 10211L can be accurately controlled by the light shielding layer 30, which is beneficial to the consistency of the preparation process of the display module, and also can make the bending starting line 10211L of the bending part 10211 closer to the display part 101, thereby reducing the width of the flexible display panel 10 in the non-display area NAA, so that the width of the non-display area NAA can be reduced, which is beneficial to the narrow frame setting.

[0155] Through experiments, it is verified that for the same display module (i.e., the same other structures), the width of the non-display area NAA in the prior art is about 0.8 mm-1.0 mm, and the width of the non-display area NAA in the present disclosure is about 0.4 mm-1.0 mm, which is about 50% of the prior art.

[0156] The adhesive layer group 40 can further include a cured part 40b connected to the protection part 40a. The fixed connection between the flexible display panel 10 and the cover plate 20 can be achieved through the cured part 40b.

[0157] Optionally, the storage modulus of the solidified portion 40b is greater than the storage modulus of the protective portion 40a, i.e., the protective portion 40a is not solidified at all. Specifically, the difference between the storage modulus of the solidified portion 40b and the storage modulus of the protective portion 40a is greater than or equal to 30 kPa, for example, the difference between the storage modulus of the solidified portion 40b and the storage modulus of the protective portion 40a is greater than or equal to 100 kPa. For example, the difference between the storage modulus of the solidified portion 40b and the storage modulus of the protective portion 40a can be 50 kPa, 80 kPa, 100 kPa, 120 kPa, 150 kPa, 170 kPa, 200 kPa, 230 kPa, 250 kPa, 280 kPa, 300 kPa, etc.

[0158] The storage modulus of the solidified portion 40b can be greater than or equal to 50 kPa and less than or equal to 1 Gpa (1000000 kPa), for example, the storage modulus of the solidified portion 40b can be 100 kPa, 500 kPa, 1000 kPa, 5000 kPa, 10000 kPa, 50000 kPa, 100000 kPa, 500000 kPa, etc.

[0159] The storage modulus of the protective portion 40a can be greater than or equal to 20 kPa and less than or equal to 1000 kPa, for example, the storage modulus of the protective portion 40a can be 100 kPa, 150 kPa, 200 kPa, 250 kPa, 300 kPa, 350 kPa, 400 kPa, 450 kPa, 500 kPa, 550 kPa, 600 kPa, 650 kPa, 700 kPa, 750 kPa, 800 kPa, 850 kPa, 900 kPa, 950 kPa, etc.

[0160] The storage modulus generally refers to the Young's modulus. The larger the Young's modulus, the less likely the material is to deform.

[0161] It should be noted that the above data are all at a temperature of 25°C.

[0162] Of course, in some other example embodiments of the present disclosure, the storage modulus of the solidified portion 40b can be equal to the storage modulus of the protective portion 40a, i.e., the protective portion 40a can be solidified after the bending of the bending portion 10211 is completed.

[0163] In the example embodiment, the display module can further include a first support layer 50 disposed on the non-display side of the flexible display panel 10, and the first support layer 50 is configured to support the flexible display panel 10. The first support layer 50 extends from the display area AA to the non-display area NAA, i.e., the first support layer 50 is disposed not only in the display area AA but also in the non-display area NAA.

[0164] Referring to FIGS. 1, 10-12, in some example embodiments of the present disclosure, in the case where the orthographic projection of the first support layer 50 on the cover plate 20 overlaps with the orthographic projection of the light shielding layer 30 on the cover plate 20, i.e., in the case where the first support layer 50 extends directly below the light shielding layer 30; or in the case where the orthographic projection of the first support layer 50 on the cover plate 20 overlaps with the orthographic projection of the protection portion 40a on the cover plate 20, i.e., in the case where the first support layer 50 extends directly below the protection portion 40a; the bending line 10211L is located on the side of the end surface of the first support layer 50 close to the bending portion 10211 away from the display area AA, or the bending line 10211L is coplanar with the end surface of the first support layer 50 close to the bending portion 10211, i.e., the bending line 10211L and the end surface of the first support layer 50 close to the bending portion 10211 are located in the same plane. In this case, the position of the bending line 10211L is mainly determined by the first support layer 50, and the bending line 10211L will not exceed the first support layer 50 to the side of the display portion 101.

[0165] Referring to FIGS. 13-16, in some example embodiments of the present disclosure, in the case where the orthographic projection of the first support layer 50 on the cover plate 20 does not overlap with the orthographic projection of the light shielding layer 30 on the cover plate 20, i.e., in the case where the first support layer 50 does not extend directly below the light shielding layer 30; or in the case where the orthographic projection of the first support layer 50 on the cover plate 20 does not overlap with the orthographic projection of the protection portion 40a on the cover plate 20, i.e., in the case where the first support layer 50 does not extend directly below the protection portion 40a; the protection portion 40a covers the bend line 10211L, i.e., the orthographic projection of the bend line 10211L on the cover plate 20 is located within the orthographic projection of the protection portion 40a on the cover plate 20, for example, the orthographic projection of the bend line 10211L on the cover plate 20 can coincide with the edge line of the protection portion 40a on the cover plate 20 close to the display portion 101, i.e., the orthographic projection of the bend line 10211L on the cover plate 20 can coincide with the edge line of the protection portion 40a on the cover plate 20 away from the display portion 101, or the orthographic projection of the bend line 10211L on the cover plate 20 can have a non-zero spacing between the edge line of the protection portion 40a on the cover plate 20 close to the display portion 101; or in the case where the orthographic projection of the bend line 10211L on the cover plate 20 is located within the orthographic projection of the light shielding layer 30 on the cover plate 20, for example, the orthographic projection of the bend line 10211L on the cover plate 20 can coincide with the edge line of the light shielding layer 30 on the cover plate 20 close to the display portion 101, or the orthographic projection of the bend line 10211L on the cover plate 20 can have a non-zero spacing between the edge line of the light shielding layer 30 on the cover plate 20 close to the display portion 101. In this case, the position of the bend line 10211L is mainly determined by the protection portion 40a formed by shielding through the light shielding layer 30, and the bend line 10211L will not exceed the protection portion 40a toward the display portion 101 side.

[0166] Referring to FIGS. 1, 10, 13 and 14, in some example embodiments of the present disclosure, the light shielding layer 30 can be arranged on the side of the cover plate 20 close to the flexible display panel 10. Specifically, the light shielding layer 30 can be arranged in a ring shape around the display area AA. The light shielding layer 30 can extend to the outer periphery of the cover plate 20. The shape of the light shielding layer 30 can be adapted to the shape of the cover plate 20. For example, when the cover plate 20 is circular, the light shielding layer 30 is arranged in a circular ring. When the cover plate 20 is rectangular, the light shielding layer 30 is arranged in a rectangular ring. When the cover plate 20 is elliptical, the light shielding layer 30 is arranged in an elliptical ring. Of course, in some other example embodiments of the present disclosure, the cover plate 20 and the light shielding layer 30 can also have other shapes, which are not described here. The light shielding layer 30 can not be arranged in a ring shape. The light shielding layer 30 can be arranged only on the side where the bending part 10211 is arranged. The light shielding layer 30 can also be arranged in a ring shape with a break. The bending part 10211 can be shielded by the light shielding layer 30, so that the specific structure of the bending part 10211 cannot be seen through the cover plate 20, and the display effect is not affected.

[0167] In this case, referring to FIGS. 1 and 13, the adhesive layer group 40 can be arranged in a single-layer structure. That is, the adhesive layer group 40 can include one adhesive layer 40c. The material of the adhesive layer 40c can be a rubber type material, including but not limited to natural rubber, synthetic rubber, silicone elastomer, etc. The material of the adhesive layer 40c can also be a resin type, including but not limited to polyurethane resin, silicone resin, acrylate resin, epoxy resin, etc.

[0168] Of course, referring to FIGS. 10-14, the adhesive layer group 40 can be arranged in a multi-layer structure. For example, the adhesive layer group 40 can include a base layer 403, a first adhesive layer 401 and a second adhesive layer 402. The first adhesive layer 401 is arranged on the side of the base layer 403 close to the cover plate 20, and is bonded between the base layer 403 and the cover plate 20. The second adhesive layer 402 is arranged on the side of the base layer 403 close to the flexible display panel 10, and is bonded between the base layer 403 and the flexible display panel 10. The materials of the first adhesive layer 401 and the second adhesive layer 402 can be rubber type materials, including but not limited to natural rubber, synthetic rubber, silicone elastomer, etc. The materials of the first adhesive layer 401 and the second adhesive layer 402 can also be resin types, including but not limited to polyurethane resin, silicone resin, acrylate resin, epoxy resin, etc.

[0169] In this case, the protection part 40a can include a first protection part 401a and a second protection part 402a, the first protection part 401a is included in the first adhesive layer 401, that is, the first protection part 401a is the part of the first adhesive layer 401 which is blocked by the light-shielding layer 30, and the second protection part 402a is included in the second adhesive layer 402, that is, the second protection part 402a is the part of the second adhesive layer 402 which is blocked by the light-shielding layer 30; the orthographic projection of the second protection part 402a on the cover plate 20 is located within the orthographic projection of the first protection part 401a on the cover plate 20; for example, the edge line of the orthographic projection of the second protection part 402a on the cover plate 20 can coincide with the edge line of the orthographic projection of the first protection part 401a on the cover plate; because when the adhesive layer group 40 is subjected to light curing, the farther away from the light-shielding layer 30, the greater the inclination angle of the light, which causes the light to be shot to the area directly below the light-shielding layer 30, thereby curing a part of the adhesive layer group 40 in the area directly below the light-shielding layer, so that the edge line of the orthographic projection of the second protection part 402a on the cover plate 20 which is close to the display area AA is located within the orthographic projection of the first protection part 401a on the cover plate 20, and the other edge lines of the orthographic projection of the second protection part 402a on the cover plate 20 coincide with the other edge lines of the orthographic projection of the first protection part 401a on the cover plate.

[0170] The curing part 40b can include a first curing part 401b and a second curing part 402b; the first curing part 401b is included in the first adhesive layer 401, that is, the first curing part 401b is the part of the first adhesive layer 401 which is not blocked by the light-shielding layer 30; the second curing part 402b is included in the second adhesive layer 402, that is, the second curing part 402b is the part of the second adhesive layer 402 which is not blocked by the light-shielding layer 30.

[0171] Referring to FIGS. 11 and 15, in some other example embodiments of the present disclosure, the light-shielding layer 30 can not be arranged on the side of the cover plate 20 close to the flexible display panel 10. In this way, the alignment accuracy of the cover plate 20 during installation can be reduced, thereby reducing the process cost and improving the assembly efficiency; and the process error value during the lamination of the cover plate 20 can not be considered, further reducing the frame width.

[0172] In this case, the adhesive layer group 40 can include a base layer 403, a first adhesive layer 401, and a second adhesive layer 402; the base layer 403 can include a light-transmitting part 4031 and a light-shielding part 4032, the light-transmitting part 4031 and the light-shielding part 4032 are connected to each other, the light-transmitting part 4031 is arranged in the display area AA and extends from the display area AA to the non-display area NAA, and the light-shielding part 4032 is located in the non-display area NAA, the light-shielding part 4032 is the light-shielding layer 30, that is, the light-shielding part 4032 serves as the light-shielding layer 30.

[0173] The light shielding portion 4032 can be arranged in a ring shape around the light transmitting portion 4031, and can extend to the outer peripheral edge of the adhesive layer group 40. The shape of the light shielding portion 4032 can be adapted to the shape of the cover plate 20. For example, when the cover plate 20 is circular, the light shielding portion 4032 is also circular. When the cover plate 20 is rectangular, the light shielding portion 4032 is also rectangular. When the cover plate 20 is elliptical, the light shielding portion 4032 is also elliptical. Of course, the cover plate 20 and the light shielding portion 4032 can also have other shapes, which are not described herein. The light shielding portion 4032 can not be arranged in a ring shape, and can be arranged only on the side where the bending portion 10211 is arranged. The light shielding portion 4032 can also be arranged in a ring shape with a break.

[0174] The first adhesive layer 401 is arranged on the side of the base layer 403 close to the cover plate 20, and is bonded between the base layer 403 and the cover plate 20. The second adhesive layer 402 is arranged on the side of the base layer 403 close to the flexible display panel 10, and is bonded between the base layer 403 and the flexible display panel 10. The material of the first adhesive layer 401 and the second adhesive layer 402 can be rubber type materials, including but not limited to natural rubber, synthetic rubber, silicone elastomer, etc. The material of the first adhesive layer 401 and the second adhesive layer 402 can also be resin type, including but not limited to polyurethane resin, silicone resin, acrylate resin, epoxy resin, etc.

[0175] In this case, the protection portion 40a is included in the second adhesive layer 402, and is the portion of the second adhesive layer 402 that is shielded by the light shielding layer 30. The first adhesive layer 401 is not shielded by the light shielding layer 30, and is completely cured during the curing process, so that the first adhesive layer 401 does not form the protection portion 40a. That is, the second adhesive layer 402 includes a second protection portion 402a and a second cured portion 402b, and the second protection portion 402a is the protection portion 40a. The first adhesive layer 401 only includes a first cured portion 401b.

[0176] Referring to FIGS. 12-16, in some example embodiments of the present disclosure, the light shielding layer 30 can be arranged in two layers, i.e., a first light shielding layer 30a and a second light shielding layer 30b.

[0177] The first light shielding layer 30a is arranged on the side of the cover plate 20 close to the flexible display panel 10. Specifically, the first light shielding layer 30a can be arranged in a ring shape around the display area AA. The first light shielding layer 30a can extend to the outer peripheral edge of the cover plate 20. The shape of the first light shielding layer 30a is adapted to the shape of the cover plate 20. For example, when the cover plate 20 is circular, the first light shielding layer 30a is arranged in a circular ring. When the cover plate 20 is rectangular, the first light shielding layer 30a is arranged in a rectangular ring. When the cover plate 20 is elliptical, the first light shielding layer 30a is arranged in an elliptical ring. Of course, in some other example embodiments of the present disclosure, the cover plate 20 and the first light shielding layer 30a can also have other shapes, which are not described one by one here. The first light shielding layer 30a can not be arranged in a ring shape. The first light shielding layer 30a can be arranged only on the side where the bending part 10211 is arranged. The first light shielding layer 30a can also be arranged in a ring shape with a break.

[0178] In this case, the adhesive layer group 40 can include a base layer 403, a first adhesive layer 401, and a second adhesive layer 402. The base layer 403 can include a light-transmitting part 4031 and a light-shielding part 4032. The light-transmitting part 4031 and the light-shielding part 4032 are connected to each other. The light-transmitting part 4031 is arranged in the display area AA and extends from the display area AA to the non-display area NAA. The light-shielding part 4032 is arranged in the non-display area NAA. The light-shielding part 4032 is the second light shielding layer 30b, i.e., the light-shielding part 4032 serves as the second light shielding layer 30b.

[0179] The second light shielding layer 30b can be arranged in a ring shape around the light-transmitting part 4031. The second light shielding layer 30b can extend to the outer peripheral edge of the adhesive layer group 40. The shape of the second light shielding layer 30b is adapted to the shape of the cover plate 20. For example, when the cover plate 20 is circular, the second light shielding layer 30b is arranged in a circular ring. When the cover plate 20 is rectangular, the second light shielding layer 30b is arranged in a rectangular ring. When the cover plate 20 is elliptical, the second light shielding layer 30b is arranged in an elliptical ring. Of course, the cover plate 20 and the second light shielding layer 30b can also have other shapes, which are not described one by one here. The second light shielding layer 30b can not be arranged in a ring shape. The second light shielding layer 30b can be arranged only on the side where the bending part 10211 is arranged. The second light shielding layer 30b can also be arranged in a ring shape with a break.

[0180] The first adhesive layer 401 is arranged on one side of the base layer 403 close to the cover plate 20, and is bonded between the base layer 403 and the cover plate 20; the second adhesive layer 402 is arranged on one side of the base layer 403 close to the flexible display panel 10, and is bonded between the base layer 403 and the flexible display panel 10. The material of the first adhesive layer 401 and the second adhesive layer 402 can be rubber type materials, including but not limited to natural rubber, synthetic rubber, silicone elastomer, etc.; the material of the first adhesive layer 401 and the second adhesive layer 402 can also be resin type, including but not limited to polyurethane resin, silicone resin, acrylate resin, epoxy resin, etc.

[0181] In this case, the protection part 40a can include a first protection part 401a and a second protection part 402a, the first protection part 401a is included in the first adhesive layer 401, that is, the first protection part 401a is the part of the first adhesive layer 401 blocked by the first light shielding layer 30a, and the second protection part 402a is included in the second adhesive layer 402, that is, the second protection part 402a is the part of the second adhesive layer 402 blocked by the second light shielding layer 30b.

[0182] The curing part 40b can include a first curing part 401b and a second curing part 402b; the first curing part 401b is included in the first adhesive layer 401, that is, the first curing part 401b is the part of the first adhesive layer 401 not blocked by the light shielding layer 30; the second curing part 402b is included in the second adhesive layer 402, that is, the second curing part 402b is the part of the second adhesive layer 402 not blocked by the light shielding layer 30.

[0183] Alternatively, the orthographic projection of the first light shielding layer 30a on the cover plate 20 overlaps with the orthographic projection of the second light shielding layer 30b on the cover plate 20, and the second light shielding layer 30b is closer to the display area AA than the first light shielding layer 30a, specifically, the inner side edge of the second light shielding layer 30b close to the display area AA is closer to the display area AA than the inner side edge of the first light shielding layer 30a close to the display area AA, and the second light shielding layer 30b extends directly below the first light shielding layer 30a.

[0184] In this way, by jointly shielding the bending part 10211 through the first light shielding layer 30a and the second light shielding layer 30b, the specific structure of the bending part 10211 is avoided from being seen through the cover plate 20, affecting the display effect; the inner diameter of the first light shielding layer 30a can be set larger, reducing the alignment accuracy when the cover plate 20 is installed, thereby reducing the process cost and improving the assembly efficiency.

[0185] The orthogonal projection of the first protective portion 401a on the cover plate 20 is located within the orthogonal projection of the second protective portion 402a on the cover plate 20, specifically, the edge line of the orthogonal projection of the first protective portion 401a on the cover plate 20 close to the display region AA is located inside the edge line of the orthogonal projection of the second protective portion 402a on the cover plate 20, and other edge lines of the orthogonal projection of the first protective portion 401a on the cover plate 20 can coincide with other edge lines of the orthogonal projection of the second protective portion 402a on the cover plate 20.

[0186] The orthogonal projection of the bending line 10211L on the cover plate 20 is located within the orthogonal projection of the second light shielding layer 30b on the cover plate 20.

[0187] For example, the orthogonal projection of the bending line 10211L on the cover plate 20 can coincide with the edge line of the orthogonal projection of the second light shielding layer 30b on the cover plate 20 close to the display portion 101, or the orthogonal projection of the bending line 10211L on the cover plate 20 can have a non-zero spacing with the edge line of the orthogonal projection of the second light shielding layer 30b on the cover plate 20 close to the display portion 101; it can also be said that the orthogonal projection of the bending line 10211L on the cover plate 20 is located within the orthogonal projection of the second protective portion 402a on the cover plate 20, for example, the orthogonal projection of the bending line 10211L on the cover plate 20 can coincide with the edge line of the orthogonal projection of the second protective portion 402a on the cover plate 20 close to the display portion 101, that is, the orthogonal projection of the bending line 10211L on the cover plate 20 can coincide with the edge line of the orthogonal projection of the second solidified portion 402b on the cover plate 20 away from the display portion 101, or the orthogonal projection of the bending line 10211L on the cover plate 20 can have a non-zero spacing with the edge line of the orthogonal projection of the second protective portion 402a on the cover plate 20 close to the display portion 101.

[0188] In some example embodiments of the present disclosure, referring to FIG. 17, the display module can further include an edge filling portion 60, which is arranged in the non-display area NAA and located on the side of the bending portion 10211 and the adhesive layer group 40 away from the display area AA. Specifically, the edge filling portion 60 extends from the side of the bending portion 10211 and the adhesive layer group 40 away from the display area AA to the edge of the cover plate 20. The edge filling portion 60 can shield the bending portion 10211, so that the specific structure of the bending portion 10211 cannot be seen through the cover plate 20, and the display effect is not affected. In addition, the edge filling portion 60 extends from the side of the cover plate 20 close to the flexible display panel 10 to the side of the bending portion 10211 away from the cover plate 20. The edge filling portion 60 substantially covers the part of the bending portion 10211 not covered by the protection portion 40a. The edge filling portion 60 can shape the bending structure of the bending portion 10211, so that the bending portion 10211 does not deform in use and the wiring in the bending portion 10211 is not disconnected. Moreover, the edge filling portion 60 can achieve impact protection in this area.

[0189] In some example embodiments of the present disclosure, referring to FIG. 18, the display module can further include a bending filling portion 70, which is arranged in the accommodation space of the bending portion 10211 close to the display area AA and arranged in the non-display area NAA. The bending filling portion 70 can shape the bending structure of the bending portion 10211, so that the bending portion 10211 does not deform in use and the wiring in the bending portion 10211 is not disconnected.

[0190] It should be noted that the edge filling portion 60 and / or the bending filling portion 70 can be arranged in all example embodiments shown in FIGS. 1, 10-18, and will not be described here.

[0191] Referring to FIGS. 1, 10-18, the display module can further include a second support layer 80 and a filling spacing layer 90. Referring to FIG. 19, before the bending of the bending portion 10211, the second support layer 80 is arranged on the side of the binding portion 1022 away from the cover plate 20. Since the flexible display panel 10 is flexible and easy to bend, the binding process is not easy to implement. The second support layer 80 can support the binding portion 1022, so that the binding process is facilitated. After the bending of the bending portion 10211, the second support layer 80 is bent to the side of the first support layer 50 away from the display portion 101. Moreover, the filling spacing layer 90 is arranged between the second support layer 80 and the first support layer 50. The filling spacing layer 90 can increase the bending radius of the bending portion 10211, so that the bending portion 10211 does not form a too small bending radius and the first connection wiring 2113 and the second connection wiring 216 in the bending portion 10211 do not break due to excessive bending stress.

[0192] Based on the same inventive concept, the example embodiments of the present disclosure provide a preparation method of a display module, for preparing the display module described in any one of the above, referring to FIG. 20, the preparation method can include the following steps:

[0193] Step S10, providing a flexible display panel, the flexible display panel includes a display part and a non-display part, the non-display part includes a bending part.

[0194] Step S20, forming an adhesive layer group on the display side of the flexible display panel.

[0195] Step S30, forming a light shielding layer in the non-display area.

[0196] Step S40, providing a cover plate, and bonding the cover plate to the side of the adhesive layer group away from the flexible display panel, at least one adhesive layer of the adhesive layer group is located on the side of the light shielding layer close to the flexible display panel.

[0197] Step S50, curing the adhesive layer group, so that the part of the adhesive layer group blocked by the light shielding layer is not cured to form a protection part, the orthographic projection of the protection part on the cover plate is located within the orthographic projection of the light shielding layer on the cover plate.

[0198] Step S60, bending the bending part into a curved structure, the bending part has a bending line, and the protection part covers the bending line.

[0199] The preparation method of the display module is illustrated as follows.

[0200] A flexible display panel 10 is provided, the flexible display panel 10 includes a display part 101 and a non-display part 102, the non-display part 102 includes a bending part 10211; the specific structure of the flexible display panel 10 has been described in detail above, therefore, it is not repeated here.

[0201] The first support layer 50 and the second support layer 80 are bonded on the non-display surface of the flexible display panel 10, and the filling spacing layer 90 is bonded on the side of the first support layer 50 away from the flexible display panel 10, the flexible display panel 10 can be supported by the first support layer 50, the second support layer 80 and the filling spacing layer 90, which facilitates the subsequent process.

[0202] In the case that the adhesive layer group 40 is one adhesive layer 40c, the adhesive layer 40c is formed on the display surface of the flexible display panel 10 by coating, spin coating or other processes.

[0203] In the case that the bonding layer group 40 comprises the first adhesive layer 401, the substrate layer 403 and the second adhesive layer 402; the second adhesive layer 402 is formed on the display surface of the flexible display panel 10 by coating, spin coating or other processes; the substrate layer 403 is attached to the side of the second adhesive layer 402 away from the flexible display panel 10, and the substrate layer 403 can comprise a light-transmitting portion 4031 and a light-blocking layer 30, the light-blocking layer 30 can be formed by coating black ink on the substrate layer 403, or the substrate layer 403 itself can already have the light-blocking layer 30 formed; the first adhesive layer 401 is formed on the side of the substrate layer 403 away from the flexible display panel 10 by coating, spin coating or other processes.

[0204] Of course, in some other example embodiments of the present disclosure, the substrate layer 403 can only comprise the light-transmitting portion 4031 and does not comprise the light-blocking layer 30, but the forming method of the bonding layer group 40 is still the above-mentioned method, except that there is no need to coat black ink on the substrate layer 403 to form the light-blocking layer 30.

[0205] The cover plate 20 is provided and bonded to the side of the bonding layer group 40 away from the flexible display panel 10; in the case that the bonding layer group 40 is one adhesive layer 40c, the cover plate 20 is bonded to the side of the adhesive layer 40c away from the flexible display panel 10; in the case that the bonding layer group 40 comprises the first adhesive layer 401, the substrate layer 403 and the second adhesive layer 402, the cover plate 20 is bonded to the side of the first adhesive layer 401 away from the flexible display panel 10.

[0206] The light-blocking layer 30 can be formed on the side of the cover plate 20 close to the flexible display panel 10, in which case, when the cover plate 20 is prepared, i.e. before the cover plate 20 is provided, the light-blocking layer 30 can be formed on the side of the cover plate 20 that needs to be bonded to the bonding layer group 40, i.e. on the side of the cover plate 20 that needs to be attached to the flexible display panel 10, by coating, spin coating or other processes.

[0207] The light-blocking layer 30 is located on the side of the cover plate 20 close to the flexible display panel 10, and at least one adhesive layer 40c of the bonding layer group 40 is located on the side of the light-blocking layer 30 close to the flexible display panel 10; in the case that the bonding layer group 40 is one adhesive layer 40c, the adhesive layer 40c is located on the side of the light-blocking layer 30 close to the flexible display panel 10; in the case that the bonding layer group 40 comprises the first adhesive layer 401, the substrate layer 403 and the second adhesive layer 402, the second adhesive layer 402 can be located on the side of the light-blocking layer 30 close to the flexible display panel 10, or the second adhesive layer 402 and the first adhesive layer 401 can both be located on the side of the light-blocking layer 30 close to the flexible display panel 10.

[0208] Of course, in some other example embodiments of the present disclosure, two layers of light shielding layer 30 can be provided, the two layers of light shielding layer 30 being a first light shielding layer 30a and a second light shielding layer 30b, the first light shielding layer 30a being provided on the side of the cover plate 20 close to the flexible display panel 10, and the second light shielding layer 30b being the light shielding layer 30 included in the base layer 403. The specific preparation method of the two layers of light shielding layer 30 will not be described here.

[0209] Then, the adhesive layer group 40 is cured, specifically, the adhesive layer group 40 is cured by irradiating the adhesive layer group 40 on the side of the cover plate 20 away from the flexible display panel 10 with ultraviolet light. The part of the adhesive layer group 40 that has not been cured due to being blocked by the light shielding layer 30 forms a protection part 40a, so that the orthographic projection of the protection part 40a on the cover plate 20 is located within the orthographic projection of the light shielding layer 30 on the cover plate 20.

[0210] Finally, the bending part 10211 is bent into a curved structure, specifically, the bending part 10211 is bent so that the binding part 1022 is located on the non-display side of the display part 101, and so that the second support layer 80 is attached to the filling spacing layer 90; the bending part 10211 has a bending starting line 10211L, and the protection part 40a covers the bending starting line 10211L.

[0211] The protection part 40a has not been cured due to being blocked by the light shielding layer 30, so that when the bending part 10211 is bent, the pulling force of the protection part 40a on the bending part 10211 is small, avoiding the tearing defect of the bending part 10211 caused by a large pulling force, and also avoiding the open circuit defect of the wire in the bending part 10211 caused by a large pulling force. On the other hand, the position of the bending starting line 10211L can be accurately controlled by the light shielding layer 30, which is conducive to the consistency of the preparation process of the display module, and also can control the bending starting line 10211L of the bending part 10211 to be closer to the display part 101, thereby reducing the width of the flexible display panel 10 in the non-display area NAA, so as to reduce the width of the non-display area NAA, which is conducive to the narrow frame setting.

[0212] Alternatively, the preparation method can further include: after the bending part 10211 is bent into a curved structure, a bending filling part 70 is formed in the accommodation space of the bending part 10211 close to the display area AA by a mold injection process or a printing process. Specifically, the filling glue can be printed on the side of the bending part 10211 away from the cover plate 20 before the bending part 10211 is bent, and the filling glue forms the bending filling part 70 after the bending part 10211 is bent, and is located in the accommodation space of the bending part 10211 close to the display area AA. Of course, the filling glue can also be coated.

[0213] Alternatively, the preparation method can further include: after the bending of the bending portion 10211 into the curved structure, the edge filling portion 60 is formed on the side of the bending portion 10211 and the adhesive layer group 40 away from the display area AA by a mold injection process or a printing process. Specifically, after the bending of the bending portion 10211, the display module can be placed in a mold, and then the filling glue is injected on the side of the bending portion 10211 and the adhesive layer group 40 away from the display area AA. After the filling glue is cured, the edge filling portion 60 is formed. Of course, the edge filling portion 60 can also be formed by a 3D printing process after the bending of the bending portion 10211.

[0214] In addition, in the case where both the bending filling portion 70 and the edge filling portion 60 are present, after the bending of the bending portion 10211, the display module can be placed in a mold, and then the filling glue is injected on the side of the bending portion 10211 and the adhesive layer group 40 away from the display area AA and in the accommodation space close to the display area AA of the bending portion 10211. After the filling glue is cured, the edge filling portion 60 and the bending filling portion 70 are formed.

[0215] Alternatively, in some example embodiments of the present disclosure, the protection portion 40a can not be cured at all. Of course, in some other example embodiments of the present disclosure, the protection portion 40a can be subjected to a curing process after the assembly of the display module is completed. For example, the protection portion 40a can be irradiated by ultraviolet light from the side so that the protection portion 40a is cured.

[0216] It should be noted that although the steps of the preparation method of the display module in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps can be omitted, a plurality of steps can be combined into one step, and / or one step can be divided into a plurality of steps, etc.

[0217] Based on the same inventive concept, the example embodiments of the present disclosure provide a display device, which can include the display module of any one of the above-mentioned display modules. The specific structure of the display module has been described in detail above, and thus will not be described again here.

[0218] Referring to FIG. 21, the edge portion of the display module is curvedly arranged, so that the display module can be used for a curved display device.

[0219] The specific type of the display device is not particularly limited, and any type of display device commonly used in the art can be used. For example, the display device can be a mobile device such as a mobile phone, a wearable device such as a watch, a VR device, etc. The specific type of the display device can be selected by a person skilled in the art according to the specific use of the display device, and thus will not be described again here.

[0220] It should be noted that the display device further comprises other necessary components and compositions in addition to the display module, for example, a housing, a circuit board, a power cord, etc., and the like, and the skilled in the art can make corresponding supplements according to the specific use requirements of the display device, which will not be described here.

[0221] Compared with the prior art, the display device provided by the example embodiments of the present application has the same beneficial effects as the display module provided by the above-mentioned example embodiments, which will not be described here.

[0222] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. This application is intended to cover any variations, uses or adaptations of the disclosure that follow, in general, the principles of the disclosure and include other known or customary features not specifically disclosed. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the disclosure are indicated by the appended claims.

Claims

1. A display module having a display area and a non-display area, wherein, The display module comprises: a flexible display panel comprising a display area and a non-display area, the non-display area comprising a bending area, the bending area being bent into a curved structure, the bending area having a bending line; a cover plate arranged on a display side of the flexible display panel; a light shielding layer arranged on the non-display area; an adhesive layer group arranged between the flexible display panel and the cover plate, at least one adhesive layer of the adhesive layer group being arranged on a side of the light shielding layer close to the flexible display panel, the adhesive layer group comprising a protection part, a normal projection of the protection part on the cover plate being located within a normal projection of the light shielding layer on the cover plate, the protection part covering the bending line.

2. The display module of claim 1, wherein, The adhesive layer group further comprises a solidification part, the solidification part being connected to the protection part, a storage modulus of the solidification part being greater than a storage modulus of the protection part.

3. The display module of claim 2, wherein, A difference between the storage modulus of the solidification part and the storage modulus of the protection part is greater than or equal to 30 kPa.

4. The display module of claim 1, wherein, The display module further comprises: a first support layer arranged on a non-display side of the flexible display panel, the first support layer extending from the display area to the non-display area; wherein a normal projection of the first support layer on the cover plate overlaps a normal projection of the light shielding layer on the cover plate, the bending line being located on a side of an end surface of the first support layer close to the bending area away from the display area, or the bending line and the end surface of the first support layer close to the bending area are located in the same plane; or, a normal projection of the first support layer on the cover plate does not overlap a normal projection of the light shielding layer on the cover plate, the protection part covering the bending line.

5. The display module of claim 4, wherein, The light shielding layer is arranged on a side of the cover plate close to the flexible display panel.

6. The display module of claim 5, wherein, The adhesive layer group is arranged as a single-layer structure, or the adhesive layer group comprises: a base layer; a first adhesive layer arranged between the base layer and the cover plate; a second adhesive layer arranged between the base layer and the flexible display panel; wherein the protection part comprises a first protection part and a second protection part, the first protection part being included in the first adhesive layer, the second protection part being included in the second adhesive layer, a normal projection of the second protection part on the cover plate being located within a normal projection of the first protection part on the cover plate.

7. The display module of claim 4, wherein, The adhesive layer group comprises: a base layer comprising a light-transmitting part and a light-shielding part, the light-shielding part being the light shielding layer; a first adhesive layer arranged between the base layer and the cover plate; a second adhesive layer arranged between the base layer and the flexible display panel; wherein the protection part is included in the second adhesive layer.

8. The display module of claim 4, wherein, The adhesive layer group comprises: a base layer comprising a light-transmitting part and a light-shielding part, the light-shielding part being arranged on the non-display area; a first adhesive layer arranged between the base layer and the cover plate; a second adhesive layer arranged between the base layer and the flexible display panel; The light-shielding layer is provided in two layers, the two layers being a first light-shielding layer and a second light-shielding layer, the first light-shielding layer being arranged on the side of the cover plate close to the flexible display panel, and the light-shielding part being the second light-shielding layer; the protection part includes a first protection part and a second protection part, the first protection part being included in the first adhesive layer, and the second protection part being included in the second adhesive layer.

9. The display module of claim 8, wherein, The first light-shielding layer has an overlapping projection on the cover plate with the second light-shielding layer, and the second light-shielding layer is closer to the display area than the first light-shielding layer, the first protection part has a projection on the cover plate within the projection of the second protection part on the cover plate, and the bending line has a projection on the cover plate within the projection of the second light-shielding layer on the cover plate.

10. The display module according to any one of claims 1 to 9, wherein, The display module further includes: An edge filling part is arranged in the non-display area and located on the side of the bending part and the adhesive layer group away from the display area.

11. The display module according to any one of claims 1 to 9, wherein The display module further includes: A bending filling part is filled in the accommodation space of the bending part close to the display area.

12. The display module of claim 1, wherein, The flexible display panel includes: A driving substrate includes a thinning part, the thinning part includes a bending part, the thinning part includes a first organic layer, a plurality of first connection traces, and a second organic layer arranged in sequence, the first connection traces are completely wrapped by the first organic layer and the second organic layer, and the first connection traces extend from at least one side of the bending part close to the display area to the bending part and from the bending part to the side of the bending part away from the display area.

13. The display module of claim 12, wherein, The bending part further includes: A protection layer is arranged on the side of the second organic layer away from the first connection traces.

14. The display module of claim 12, wherein, The thinning part further includes: A third organic layer; A second connection trace, the second connection trace is connected in parallel with the first connection trace, the second connection trace is completely wrapped by the first organic layer and the third organic layer, or the second connection trace is completely wrapped by the second organic layer and the third organic layer.

15. The display module according to any one of claims 12 to 14, wherein, The thinning part is provided with a groove, the groove has a groove bottom wall and a groove side wall; the first organic layer includes a first sub-organic layer and a second sub-organic layer, the first sub-organic layer covers the groove bottom wall, and the second sub-organic layer covers the groove side wall.

16. The display module of claim 14, wherein, The bending part further includes: A protection layer is arranged on the side of the second organic layer or the third organic layer away from the first connection traces.

17. A method for producing a display module according to any one of claims 1 to 16, wherein The preparation method includes: Providing a flexible display panel, the flexible display panel including a display part and a non-display part, the non-display part including a bending part; Forming an adhesive layer group on the display side of the flexible display panel; Forming a light-shielding layer in the non-display area; Providing a cover plate, and adhering the cover plate to the side of the adhesive layer group away from the flexible display panel, at least one adhesive layer of the adhesive layer group being located on the side of the light-shielding layer close to the flexible display panel; The adhesive layer group is cured so that the part of the adhesive layer group blocked by the light shielding layer is not cured to form a protection part, and a projection of the protection part on the cover plate is located within a projection of the light shielding layer on the cover plate; The bending part is bent into a curved structure, the bending part has a bending line, and the protection part covers the bending line.

18. The method of claim 17, wherein the display module is prepared by the steps of: Forming a light shielding layer in a non-display area, comprising: Before providing the cover plate, forming the light shielding layer on a side of the cover plate which needs to be attached to the flexible display panel.

19. The method of claim 17, wherein the display module is prepared by the steps of: Forming an adhesive layer group on a display side of the flexible display panel, forming a light shielding layer in a non-display area, comprising: Forming a second adhesive layer on a display side of the flexible display panel; Forming a base layer on a side of the second adhesive layer away from the flexible display panel, the base layer comprising a light-transmitting part and the light shielding layer; Forming a first adhesive layer on a side of the base layer away from the flexible display panel.

20. The method of claim 17, wherein, The light shielding layer is formed in two layers, the two layers of the light shielding layer being a first light shielding layer and a second light shielding layer; Forming a light shielding layer in a non-display area, comprising: Before providing the cover plate, forming the first light shielding layer on a side of the cover plate which needs to be attached to the flexible display panel; Forming a second adhesive layer on a display side of the flexible display panel; Forming a base layer on a side of the second adhesive layer away from the flexible display panel, the base layer comprising a light-transmitting part and the second light shielding layer; Forming a first adhesive layer on a side of the base layer away from the flexible display panel.

21. The method of claim 17 to 20, wherein After the bending part is bent into a curved structure, the preparation method further comprises: Forming a bending filling part on a containing space of the bending part close to the display area by a mold injection process or a printing process.

22. The method of claim 17 to 20, wherein After the bending part is bent into a curved structure, the preparation method further comprises: Forming an edge filling part on a side of the bending part and the adhesive layer group away from the display area by a mold injection process or a printing process.

23. The method of claim 17 to 20, wherein After the bending part is bent into a curved structure, the preparation method further comprises curing the protection part.

24. A display device comprising: Comprising: The display module is the display module of any one of claims 1-16.

25. The display device of claim 24, wherein, The edge part of the display module is curvedly arranged.

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