Display module, manufacturing method thereof and display device

Abstract

The invention provides a display module, a manufacturing method thereof and a display device. The display module comprises a display panel, the display panel comprises a display part, a binding part and a bending part located between the display part and the binding part, the display part is provided with a light emitting surface and a backlight surface which are oppositely arranged, and the binding part is bent to one side of the backlight surface of the display part through the bending part; the protective layer covers the surface of one side, far away from the display part, of the bent part, the elastic modulus of the protective layer is 50-200MPa, and the surface of one side, far away from the bent part, of the protective layer is a non-stick surface, or a conductive layer is arranged on the surface of one side, far away from the bent part, of the protective layer. The protective layer or the protective layer and the conductive layer can effectively reduce the risk of cracks generated in the bending process of the display module, MCL glue is omitted in the display module, the coating and curing process of the MCL glue is reduced, the production time is saved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more particularly to a display module, a manufacturing method thereof, and a display device. Background Art

[0002] With the development of display technology, the advantages of flexible displays in terms of narrow bezels and high screen-to-body ratio are becoming increasingly prominent. Shortening the bezel has become an important way to increase the screen-to-body ratio. Narrow bezels can be achieved by bending the binding part of the display panel to the driver chip to the back of the display panel. However, as the bending radius of the display panel decreases, the bending tensile stress on the bent part increases, which increases the risk of cracks in the bent part. Currently, protective glue (MCL glue) is usually set on the outside of the bent part to cushion the bent part during the bending process and reduce the risk of cracks in the bent part. Summary of the Invention

[0003] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0004] The inventors have found that the current flexible display screens still have the problem of a high risk of bending cracks. Specifically, MCL glue is formed by liquid glue coating and UV curing. The elastic modulus of the cured MCL glue is relatively large (generally 300-400MPa), which will cause greater stress to the display panel during the bending process. Especially when the bending radius is further reduced, the stress caused by the MCL glue on the display panel is further increased, which further increases the risk of cracks in the bent portion. In addition, the MCL glue is not evenly coated during the coating process. In the area close to the display portion 11 of the display panel, the MCL glue 3 is too thick, which is easy to adhere to the ink layer 81 on the cover plate 80 (such as Figure 2 As shown in the figure, during the bending process, due to the adhesion of MCL glue to the cover plate, the display panel will be pulled, and the position where the MCL glue adheres to the cover plate will cause local stress concentration, the neutral layer will change, and cracks will easily occur. In addition, there will be problems such as residual MCL glue left in the ink layer. In addition, for products with multiple curved edges, such as four-curved edge products, since the edge of the cover plate 80 is curved, there is also the problem that the MCL glue 3 on the surface of the bending portion 12 is easily adhered to the inner surface of the cover plate 80 during the bending process (as shown in the figure). Figure 3 As shown in FIG, the display panel is pulled during the bending process, increasing the risk of cracks.

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, in one aspect of the present invention, the present invention proposes a display module. The display module includes: a display panel, the display panel includes a display part, a binding part, and a bending part located between the display part and the binding part, the display part has a light-emitting surface and a backlight surface that are relatively arranged, and the binding part is bent to the backlight side of the display part through the bending part; a protective layer, the protective layer covers the surface of the bending part away from the display part, the elastic modulus of the protective layer is 50-200MPa, the surface of the protective layer away from the bending part is a non-stick surface, or the surface of the protective layer away from the bending part is provided with a conductive layer. The protective layer or the protective layer and the conductive layer can effectively reduce the risk of cracks during the bending process of the display module, and the MCL glue is omitted in the display module, which reduces the coating and curing process of the MCL glue, saves production time, and reduces production costs.

[0007] Furthermore, the protective layer includes foam or silicone gel.

[0008] Furthermore, the thickness of the protective layer is 0.04-0.08 mm.

[0009] Furthermore, the display module further includes: a driving chip, the driving chip is bound to the binding part, and the side of the driving chip away from the binding part is covered with a first insulating tape; a polarizer, the polarizer is arranged on the light-emitting surface side of the display part, one end of the protective layer is connected to the polarizer, and the other end is connected to the first insulating tape; a supporting layer, the supporting layer is located between the binding part and the display part, and the side of the supporting layer away from the display part has a first area and a second area adjacent to each other, the binding part is located in the first area, and the second area is provided with a metal layer; a flexible circuit board, the flexible circuit board is arranged on the side of the metal layer away from the supporting layer, and is electrically connected to the driving chip.

[0010] Furthermore, the conductive layer is connected to the polarizer and extends toward the binding portion, covers the first insulating tape, and is electrically connected to the flexible circuit board. The conductive layer includes conductive cloth or conductive silver paste.

[0011] Furthermore, the first insulating tape further covers the flexible circuit board and extends to part of the surface of the metal layer. The conductive layer is connected to the polarizer and extends toward the binding portion, covering the first insulating tape and being electrically connected to the metal layer. The conductive layer includes conductive cloth.

[0012] Furthermore, the thickness of the conductive cloth is 0.02-0.04 mm.

[0013] Furthermore, the thickness of the conductive silver paste is 0.01-0.02 mm.

[0014] Furthermore, a side of the conductive layer away from the first insulating tape is covered with a second insulating tape, and an orthographic projection of the second insulating tape on the plane where the display panel is located does not overlap with an orthographic projection of the bent portion on the plane where the display panel is located.

[0015] In another aspect of the present invention, a display device is provided, which includes the display module described above. Thus, the display device has all the features and benefits of the display module described above, which will not be described in detail here.

[0016] In another aspect of the present invention, a method for manufacturing a display module is proposed. The method comprises: providing a display panel, the display panel comprising a display portion, a binding portion, and a bending portion located between the display portion and the binding portion, the display portion having a light-emitting surface and a backlight surface relatively arranged; providing a protective layer on the surface of the bending portion on the side of the light-emitting surface, the elastic modulus of the protective layer being 50-200 MPa, the surface of the protective layer away from the bending portion being a non-stick surface, or providing a conductive layer on the surface of the protective layer away from the bending portion; bending the bending portion to bend the binding portion to the backlight side of the display portion. The risk of cracks during the bending process of the display module can be effectively reduced. The protective layer or the protective layer and the conductive layer provided can effectively reduce the risk of cracks during the bending process of the display module, and the manufacturing process reduces the coating and curing process of the MCL glue, saving production time and reducing production costs.

[0017] Furthermore, the protective layer includes foam or silicone gel, and the protective layer is attached to the surface of the bending portion.

[0018] Furthermore, providing a display panel further includes: arranging a polarizer on the light-emitting surface side of the display part, and binding a driving chip on the binding part, the driving chip is electrically connected to a flexible circuit board, and a first insulating tape is attached to the side of the driving chip away from the binding part; arranging a protective layer on the surface of the bending part on the light-emitting side includes: connecting one end of the protective layer to the polarizer, and connecting the other end to the first insulating tape; arranging a conductive layer on the surface of the protective layer away from the bending part further includes: connecting the conductive layer to the polarizer, extending toward the binding part, covering the first insulating tape, and electrically connected to the flexible circuit board, the conductive layer includes conductive cloth, and the conductive layer is formed by attachment, or the conductive layer includes conductive silver paste, and the conductive layer is formed by coating.

[0019] Furthermore, the display panel provided further includes: arranging a polarizer on the light-emitting side of the display part, and binding a driving chip on the binding part, the driving chip is electrically connected to a flexible circuit board, and a first insulating tape is attached to the side of the driving chip and the flexible circuit board away from the binding part, and the first insulating tape is suspended and extends to the side of the flexible circuit board away from the driving chip; arranging a protective layer on the surface of the bending part on the light-emitting side includes: connecting one end of the protective layer to the polarizer and the other end to the first insulating tape; arranging a conductive layer on the surface of the protective layer away from the bending part further includes: connecting the The conductive layer is connected to the polarizer and extends toward the binding portion, covering the first insulating tape; before bending the bending portion, it further includes: arranging a supporting layer on the backlight side of the display portion, the supporting layer having a first area and a second area adjacent to each other on the side away from the display portion, and the second area is provided with a metal layer; bending the bending portion includes: bending the binding portion to the first area of ​​the supporting layer, the flexible circuit board is arranged on the metal layer, the first insulating tape is adhered to a part of the surface of the metal layer, the conductive layer is electrically connected to the metal layer, the conductive layer includes conductive cloth, and the conductive layer is formed by adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 shows a schematic structural diagram of a display module according to an embodiment of the present invention;

[0022] Figure 2 A schematic diagram showing the structure of a display module before bending in the related art is shown;

[0023] Figure 3 A schematic diagram showing the structure of another display module in the related art is shown;

[0024] Figure 4 shows a schematic structural diagram of a display module according to another embodiment of the present invention;

[0025] Figure 5 A schematic flow chart of a method for manufacturing a display module according to an embodiment of the present invention is shown;

[0026] Figure 6 shows a schematic structural diagram of a display module before bending according to one embodiment of the present invention;

[0027] Figure 7 FIG2 shows a schematic structural diagram of a display module before being bent according to another embodiment of the present invention.

[0028] Reference numerals:

[0029] 10: Display panel; 11: Display part; 12: Bending part; 13: Binding part; 1: Light-emitting surface; 2: Backlight surface; 3: MCL glue; 4: First area; 5: Second area; 20: Protective layer; 30: Conductive layer; 40: Driver chip; 41: First insulating tape; 42: Second insulating tape; 50: Polarizer; 60: Support layer; 61: Metal layer; 70: Flexible circuit board; 80: Cover plate; 81: Ink layer; 90: Optical adhesive layer. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in detail. The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, the techniques or conditions described in the literature in the art or in the product specifications shall be followed.

[0031] In one aspect of the present invention, the present invention provides a display module. In some embodiments of the present invention, reference Figure 1 The display module includes: a display panel 10 and a protective layer 20, wherein the display panel 10 includes a display portion 11, a binding portion 13, and a bending portion 12 located between the display portion 11 and the binding portion 13, the display portion 11 has a light-emitting surface 1 and a backlight surface 2 arranged opposite to each other, the binding portion 13 is bent to the backlight surface 2 side of the display portion 11 through the bending portion 12, the protective layer 20 covers the surface of the bending portion 12 away from the display portion 11, the elastic modulus of the protective layer 20 is 50-200 MPa, the surface of the protective layer 20 away from the bending portion 12 is a non-stick surface, or the surface of the protective layer 20 away from the bending portion 12 is provided with a conductive layer 30.

[0032] In this display module, the elastic modulus of the protective layer is 50-200 MPa, and the elastic modulus is relatively small. During the bending process, the stress generated by the protective layer on the display panel is relatively small, thereby reducing the risk of cracks in the display panel during the bending process. The protective layer with the above elastic modulus is conducive to further reducing the bending radius, which is conducive to obtaining a display module with a narrower frame. The protective layer with the above elastic modulus can provide better protection for the bending part.

[0033] In addition, the surface of the protective layer away from the bend is a non-stick surface, or a conductive layer is provided on the surface of the protective layer away from the bend. The conductive layer can isolate the protective layer from the cover plate, thereby preventing adhesion between the protective layer and the cover plate. This improves the current problem of the display panel being pulled and cracked during the bending process due to adhesion of MCL glue to the cover plate, further reducing the risk of cracks during the bending process of the display module. Furthermore, the display module eliminates MCL glue, reducing the MCL glue coating and curing processes, saving production time and reducing production costs.

[0034] It should be noted that the "non-stick surface" refers to a non-adhesive surface. In other words, this surface does not adhere to other non-adhesive film layers (such as a cover plate). More specifically, the adhesion force of the non-stick surface can be less than 10g / cm, that is, after the non-stick surface contacts the non-adhesive film layer, a force of less than 10g is applied to the surface with a width of 1cm, and the surface can be peeled off from the non-adhesive film layer.

[0035] The surface of the protective layer away from the bending portion is a non-stick surface, and the non-stick surface may be a property of the material constituting the protective layer. For example, according to some embodiments of the present invention, the elastic modulus is 50-200 MPa, and the protective layer having a non-stick surface may be a foam layer. On the one hand, the foam has a smaller elastic modulus, and the stress generated on the display panel during the bending process is smaller, thereby reducing the risk of bending cracks. On the other hand, the surface of the foam layer away from the bending portion is a non-stick surface, which can avoid adhesion to the cover plate, further reducing the risk of cracks.

[0036] Alternatively, the non-stick surface may be an isolation film attached to the surface of the material constituting the protective layer. For example, according to some embodiments of the present invention, the protective layer having an elastic modulus of 50-200 MPa and a non-stick surface may be a single-sided silicone gel layer. The single-sided silicone gel layer, that is, the surface of the silicone gel away from the bending portion is attached with an isolation film, so that the protective layer has a non-stick surface. On the one hand, silicone gel has a smaller elastic modulus, and the stress generated on the display panel during the bending process is smaller, thereby reducing the risk of bending cracks. On the other hand, the surface of the single-sided silicone gel layer away from the bending portion is a non-stick surface, which avoids adhesion to the cover plate and further reduces the risk of cracks.

[0037] There is no particular restriction on the specific material of the isolation film in the single-sided silicone gel layer, as long as the overall elastic modulus of the single-sided silicone gel layer is between 50 and 200 MPa. For example, the isolation film in the single-sided silicone gel layer can be made of polyurethane (PU), polyethylene terephthalate (PET) or polyimide (PI).

[0038] Alternatively, a conductive layer is provided on the surface of the protective layer away from the bending portion. The conductive layer can isolate the protective layer from the cover plate to prevent the protective layer from adhering to the cover plate. In this case, the protective layer can include foam or silicone gel. When the protective layer is composed of silicone gel, the protective layer can be a double-sided silicone gel layer, that is, the surface of the double-sided silicone gel layer away from the bending portion is an adhesive surface. Since the conductive layer is provided on the surface of the double-sided silicone gel layer away from the bending portion, adhesion between the double-sided silicone gel layer and the cover plate can be avoided, reducing the risk of cracks. When the protective layer is a foam layer or a single-sided silicone gel layer, a conductive layer can also be provided on the surface of the protective layer away from the bending portion to further prevent the protective layer from contacting the cover plate.

[0039] In some embodiments of the present invention, reference Figure 1 The thickness d of the protective layer 20 can be 0.04-0.08 mm, for example, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, or 0.08 mm. A protective layer having such a thickness can protect the bent portion and reduce stress on the bent portion during the bending process, thereby reducing the risk of cracks.

[0040] In some embodiments of the present invention, reference Figure 1 The display panel's binding portion 13 is bound to a driver chip 40, and the side of the driver chip 40 facing away from the binding portion 13 is covered with a first insulating tape 41. The first insulating tape covers the driver chip, reducing the effects of static electricity on the driver chip. The first insulating tape can be a single-sided insulating tape. The specific material of the first insulating tape is not particularly limited, and those skilled in the art can design it based on specific circumstances.

[0041] In some embodiments of the present invention, reference Figure 1 The display module also includes a polarizer 50, a support layer 60, and a flexible circuit board 70. The polarizer 50 is disposed on the light-emitting surface 1 side of the display unit 11. One end of the protective layer 20 is connected to the polarizer 50, and the other end is connected to the first insulating tape 41. The first insulating tape 41 can further cover the portion of the binding portion 13 not bound to the driver chip 40 to connect to the protective layer 20. The support layer 60 is disposed between the display unit 11 and the binding portion 13. The side of the support layer 60 away from the display unit 11 has a first region 4 and a second region 5 adjacent to each other. The binding portion 13 is located in the first region 4, and the second region 5 is provided with a metal layer 61. The flexible circuit board 70 is disposed on the side of the metal layer 61 away from the support layer 60 and is electrically connected to the driver chip 40. The metal layer on the support layer can support the display panel. The material constituting the metal layer is not particularly limited. For example, the metal layer can include copper or stainless steel.

[0042] In some embodiments of the present invention, reference Figure 1, the conductive layer 30 is connected to the polarizer 50 and extends to the binding portion 13, covering the first insulating tape 41, and electrically connected to the flexible circuit board 70. In order to facilitate the electrical connection between the conductive layer and the flexible circuit board, the first insulating tape can also cover part of the flexible circuit board to support the conductive layer and realize the electrical connection between the conductive layer and the flexible circuit board. The inventors also found in the research process that when the electrostatic discharge (ESD) test is performed on the bending area of ​​the display module with MCL glue on the surface of the bending portion, the static electricity can not be released, which can easily cause the bending portion to bend at the starting point (such as Figure 3 In addition, static electricity generated by human body touching or rubbing the screen will be transferred to the display panel through the laminated layer, which will also affect the screen display.

[0043] The present invention provides a conductive layer on the side of the protective layer away from the bend. This layer isolates the protective layer from the cover plate. Furthermore, one end of the conductive layer is connected to a polarizer, and the other end is electrically connected to a flexible circuit board, forming a charge conduction path. During an electrostatic test of the display module's bend area, charge is conducted to the conductive layer and released along the conductive layer to the flexible circuit board, improving ESD resistance. Because the conductive layer and the flexible circuit board form a planar structure, charge conduction from a point to a surface spreads the charge evenly, reducing static electricity accumulation. Consequently, very little charge reaches the flexible circuit board, preventing it from impacting the board. Furthermore, this conduction path can also conduct away static electricity generated by a person touching or rubbing the screen, thereby mitigating the effects of touch static or friction static on the screen display.

[0044] In this embodiment, the conductive layer 30 may include conductive fabric or conductive silver paste. Conductive fabric and conductive silver paste not only have good conductivity but also good ductility. They can well match the shape of the curved portion of the display panel, forming an electrostatic conduction channel, improving the ESD resistance of the display module, and can also isolate the protective layer and the cover plate.

[0045] In other embodiments of the present invention, reference Figure 4 The first insulating tape 41 further covers the flexible circuit board 70 and extends to a portion of the surface of the metal layer 61. The conductive layer 30 is connected to the polarizer 50 and extends toward the binding portion 13, covering the first insulating layer 41 and electrically connected to the metal layer 61. One end of the conductive layer is connected to the polarizer and the other end is electrically connected to the metal layer, forming a charge conduction channel. When performing an electrostatic test on the bending area of ​​the display module, the charge can be conducted to the conductive layer and released along the conductive layer to the side of the metal layer, thereby improving the ESD resistance. In addition, the above-mentioned conduction channel can also conduct away the static electricity generated by the human body touching or rubbing the screen, thereby reducing the impact of touch static electricity or friction static electricity on the screen display.

[0046] In this embodiment, the conductive layer 30 may include conductive cloth. The conductive cloth can be formed on the first insulating tape by attachment, which facilitates forming a conductive channel between the polarizer and the metal layer, thereby improving the ESD resistance of the display module.

[0047] In some embodiments of the present invention, the thickness of the conductive fabric can be 0.02-0.04 mm, for example, 0.02 mm, 0.03 mm, or 0.04 mm. Conductive fabrics with this thickness exhibit both good conductivity and ductility, reducing the risk of bending cracks and improving the display module's ESD resistance. The thickness of the conductive fabric is defined as the dimension perpendicular to its extension direction.

[0048] In some embodiments of the present invention, the thickness of the conductive silver paste can be 0.01-0.02 mm. This thickness ensures the ductility of the protective layer itself, reducing the risk of bending cracks, while also providing good electrical conductivity on the surface of the protective layer, improving the ESD resistance of the display module. The thickness of the conductive silver paste is defined as the dimension perpendicular to its extension direction.

[0049] In some embodiments of the present invention, reference Figure 4 The side of the conductive layer 30 away from the first insulating tape 41 can also be covered with a second insulating tape 42. The orthographic projection of the second insulating tape 42 on the plane where the display panel 10 is located does not overlap with the orthographic projection of the bending portion 12 on the plane where the display panel 10 is located. The second insulating tape protects the conductive layer and prevents the conductive layer from being affected by external force and affecting its conductive performance. The second insulating tape does not cover the bending portion and therefore will not affect the bending. Figure 1 The side of the middle conductive layer 30 away from the first insulating tape 41 may also be covered with a second insulating tape (not shown in the figure), and the orthographic projection of the second insulating tape on the plane where the display panel is located does not overlap with the orthographic projection of the bent portion on the plane where the display panel is located.

[0050] refer to Figure 1 and Figure 4 The display module further includes an optical adhesive layer 90 and a cover plate 80. The optical adhesive layer 90 is located on the side of the polarizer 50 away from the display panel 10. The cover plate 80 is bonded to the polarizer 50 via the optical adhesive layer 90. An ink layer 81 is provided on the edge of the cover plate 80 facing the optical adhesive layer 90. The ink layer 81 has a certain overlap area with the optical adhesive layer 90. The structure of the cover plate 80 is not particularly limited, and its edge can be flat or curved.

[0051] In another aspect, the present invention provides a display device. The display device includes the display module described above. Thus, the display device has all the features and benefits of the display module described above. In general, compared to display devices with MCL adhesive applied to the bend portion, the display device has a reduced risk of bending cracks, improved ESD resistance, and reduced production costs.

[0052] There are no special requirements for the specific type of the display device, and those skilled in the art can flexibly choose according to actual needs. For example, the display device can be any device and apparatus with a display function, such as a mobile phone, a television, a notebook, an iPad, a game console, a Kindle, a car display device, etc.

[0053] Those skilled in the art will appreciate that, in addition to the display module described above, the display device also includes structures or components necessary for a conventional display device, and may also include structures such as an audio module, a camera module, and a touch module.

[0054] In another aspect of the present invention, a method for manufacturing a display module is provided. In some embodiments of the present invention, the display module manufactured by this method may be the display module described above. Thus, the display module manufactured by this method has the same features and benefits as the display module described above, and no further details are given here.

[0055] In some embodiments of the present invention, reference Figure 5 , the method comprising:

[0056] S100: providing a display panel.

[0057] In this step, a display panel is provided. Figure 6 and Figure 7 The display panel 10 includes a display portion 11, a binding portion 13, and a bending portion 12 located between the display portion 11 and the binding portion 13. The display portion 11 has a light emitting surface 1 and a backlight surface 2 that are oppositely arranged.

[0058] S200: providing a protective layer on the surface of the bent portion located on the light emitting surface side.

[0059] In this step, a protective layer 20 is provided on the surface of the bent portion 12 located on the light-emitting side. The protective layer has an elastic modulus of 50-200 MPa. This relatively low elastic modulus reduces stress on the display panel during the bending process, thereby reducing the risk of cracks in the display panel during bending. Furthermore, a protective layer with this elastic modulus facilitates further reduction of the bending radius, facilitating the production of a display module with a narrower bezel. Furthermore, the protective layer with this elastic modulus provides excellent protection for the bent portion.

[0060] The surface of the protective layer away from the bend is a non-stick surface. Alternatively, in this step, a conductive layer is provided on the surface of the protective layer away from the bend to isolate the protective layer from the cover plate. This prevents adhesion of the protective layer to the cover plate, improves the current problem of cracks in the display panel caused by adhesion of the MCL adhesive to the cover plate, and further reduces the risk of cracks in the display module during the bending process.

[0061] In some embodiments of the present invention, the protective layer may comprise foam or silicone gel and may be attached to the surface of the bent portion. This display module eliminates the need for MCL adhesive, reducing the application and curing process. Instead, the protective layer is formed by attachment, saving production time and lowering production costs.

[0062] S300: bending the bending portion to bend the binding portion toward the backlight side of the display portion.

[0063] In this step, the bending portion is bent, and the binding portion is bent toward the backlight side of the display portion to obtain a display module.

[0064] In some specific embodiments of the present invention, the display module can be obtained by the following steps:

[0065] In S100, after providing the display panel, a polarizer 50 is set on the light-emitting surface side of the display portion 11, and a driver chip 40 electrically connected to a flexible circuit board 70 is bound to the binding portion 13, and a first insulating tape 41 (such as 41) is attached to the side of the driver chip 40 away from the binding portion 13. Figure 6 As shown), the first insulating tape covers the driver chip, which can reduce the impact of external static electricity on the driver chip.

[0066] In S200, when attaching the protective layer, one end of the protective layer 20 is connected to the polarizer 50, and the other end is connected to the first insulating tape 41 (eg, Figure 6 When a conductive layer is provided on the surface of the protective layer away from the bending portion, the conductive layer 30 is connected to the polarizer 50 and extends toward the binding portion 13, covering the first insulating tape 41 and electrically connected to the flexible circuit board 70 (as shown). Figure 6 As shown). The conductive layer may include conductive cloth. In this case, the conductive layer can be formed by attaching, which is a simple and easy-to-operate process. Alternatively, the conductive layer may include conductive silver paste. In this case, the conductive layer can be formed by coating.

[0067] In S300, before bending the bending portion, the method further includes attaching a support layer 60 to the backlight side of the display portion. The support layer 60 has a first region 4 and a second region 5 adjacent to each other on a side away from the display portion 11. The second region 5 is provided with a metal layer 61 (such as Figure 6As shown). The support layer is used to support the display panel after bending. And it also includes attaching an optical adhesive layer to the side of the polarizer away from the display part, and attaching a cover plate to the side of the optical adhesive layer away from the polarizer. After attaching the above film layer, the bending portion is bent so that the binding portion is bent to the first area of ​​the support layer. The flexible circuit board is set on the metal layer to bend the binding portion to the backlight side of the display part to obtain a display module (as shown). Figure 1 shown).

[0068] In this embodiment, after the conductive layer is set in S200, a second insulating tape can be attached to the side of the conductive layer away from the first insulating tape. The second insulating tape covers the conductive layer, and the orthographic projection of the second insulating tape on the display panel does not overlap with the orthographic projection of the bent portion on the display panel, so as to protect the conductive layer.

[0069] In some other specific embodiments of the present invention, the display module can also be obtained by the following steps:

[0070] In S100, after providing the display panel, a polarizer 50 is disposed on the light-emitting surface side of the display portion 11, and a driver chip 40 electrically connected to a flexible circuit board 70 is bound to the binding portion 13. A first insulating tape 41 is attached to the side of the driver chip 40 and the flexible circuit board 70 away from the binding portion 13, and the first insulating tape 41 is suspended and extended to the side of the flexible circuit board 70 away from the driver chip 40 (such as Figure 7 As shown), the first insulating tape covers the driver chip, which can reduce the impact of external static electricity on the driver chip.

[0071] In S200, when attaching the protective layer, one end of the protective layer 20 is connected to the polarizer 50, and the other end is connected to the first insulating tape 41 (eg, Figure 7 When a conductive layer is provided on the surface of the protective layer away from the bending portion, the conductive layer 30 is connected to the polarizer 50 and extends toward the binding portion 13, covering the first insulating tape 41, and extending along with the first insulating tape 41 to the side of the flexible circuit board 70 away from the driver chip 40 (as shown). Figure 7 As shown). The conductive layer may include conductive cloth. In this case, the conductive layer can be formed by attachment, which is a simple process and easy to operate.

[0072] In S300, before bending the bending portion, the method further includes attaching a support layer 60 to the backlight side of the display portion. The support layer 60 has a first region 4 and a second region 5 adjacent to each other on a side away from the display portion 11. The second region 5 is provided with a metal layer 61 (such as Figure 7As shown). The support layer is used to support the display panel after bending. And it also includes attaching an optical adhesive layer to the side of the polarizer away from the display part, and attaching a cover plate to the side of the optical adhesive layer away from the polarizer. After attaching the above-mentioned film layer, the bending portion is bent so that the binding portion is bent to the first area of ​​the support layer, and the flexible circuit board is arranged on the metal layer to bend the binding portion to the backlight side of the display part, and the suspended part of the first insulating tape is attached to a part of the surface of the metal layer, and the conductive layer is electrically connected to the metal layer to obtain a display module (as shown). Figure 4 shown).

[0073] In this embodiment, after the conductive layer is set in S200, a second insulating tape can be attached to the side of the conductive layer away from the first insulating tape. The second insulating tape covers the conductive layer, and the orthographic projection of the second insulating tape on the display panel does not overlap with the orthographic projection of the bent portion on the display panel to protect the conductive layer. The second insulating tape is suspended with the conductive layer, and after bending, it is attached to the metal layer along with the conductive layer.

[0074] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0075] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this specification. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0076] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A display module, characterized in that: include: A display panel, the display panel comprising a display portion, a binding portion, and a bending portion located between the display portion and the binding portion, the display portion having a light emitting surface and a backlight surface disposed opposite to each other, the binding portion being bent through the bending portion to the backlight surface side of the display portion; A protective layer covers the surface of the bending portion away from the display portion, the elastic modulus of the protective layer is 50-200 MPa, the surface of the protective layer away from the bending portion is a non-stick surface, or the surface of the protective layer away from the bending portion is provided with a conductive layer.

2. The display module according to claim 1, wherein: The protective layer includes foam or silicone gel.

3. The display module according to claim 1, wherein: The thickness of the protective layer is 0.04-0.08 mm.

4. The display module according to claim 1, wherein: The display module further comprises: a driving chip, the driving chip being bound to the binding portion, and a side of the driving chip away from the binding portion being covered with a first insulating tape; a polarizer, the polarizer being arranged on a light-emitting surface side of the display portion, one end of the protective layer being connected to the polarizer, and the other end being connected to the first insulating tape; a supporting layer, the supporting layer being located between the binding portion and the display portion, the supporting layer having a first region and a second region adjacent to each other on a side away from the display portion, the binding portion being located in the first region, and a metal layer being provided in the second region; A flexible circuit board is arranged on a side of the metal layer away from the support layer and is electrically connected to the driving chip.

5. The display module according to claim 4, wherein: The conductive layer is connected to the polarizer and extends toward the binding portion, covers the first insulating tape, and is electrically connected to the flexible circuit board. The conductive layer includes conductive cloth or conductive silver paste.

6. The display module according to claim 4, wherein: The first insulating tape further covers the flexible circuit board and extends to a portion of the surface of the metal layer. The conductive layer is connected to the polarizer and extends toward the binding portion, covering the first insulating tape and electrically connected to the metal layer. The conductive layer includes conductive cloth.

7. The display module according to claim 5 or 6, characterized in that: The thickness of the conductive cloth is 0.02-0.04 mm.

8. The display module according to claim 5, wherein: The thickness of the conductive silver paste is 0.01-0.02 mm.

9. The display module according to claim 5 or 6, characterized in that: A side of the conductive layer away from the first insulating tape is covered with a second insulating tape, and an orthographic projection of the second insulating tape on the plane where the display panel is located does not overlap with an orthographic projection of the bent portion on the plane where the display panel is located.

10. A display device, characterized in that: A display module comprising any one of claims 1 to 9.

11. A method for manufacturing a display module, characterized in that: include: A display panel is provided, comprising a display portion, a binding portion, and a bending portion located between the display portion and the binding portion, wherein the display portion has a light emitting surface and a backlight surface that are oppositely disposed; A protective layer is provided on the surface of the bent portion on the side of the light-emitting surface, wherein the elastic modulus of the protective layer is 50-200 MPa, and the surface of the protective layer away from the bent portion is a non-stick surface, or a conductive layer is provided on the surface of the protective layer away from the bent portion; The bending portion is bent to bend the binding portion toward the backlight side of the display portion.

12. The method according to claim 11, characterized in that The protective layer includes foam or silicone gel, and is attached to the surface of the bent portion.

13. The method according to claim 11, characterized in that The providing of the display panel further comprises: disposing a polarizer on a light emitting surface side of the display portion, binding a driver chip to the binding portion, wherein the driver chip is electrically connected to a flexible circuit board, and attaching a first insulating tape to a side of the driver chip away from the binding portion; Providing a protective layer on the surface of the bent portion located on the light-emitting surface includes: connecting one end of the protective layer to the polarizer and the other end to the first insulating tape; Providing a conductive layer on the surface of the protective layer away from the bending portion further includes: connecting the conductive layer to the polarizer and extending toward the binding portion, covering the first insulating tape, and electrically connecting to the flexible circuit board, the conductive layer includes conductive cloth, and the conductive layer is formed by attachment, or the conductive layer includes conductive silver paste, and the conductive layer is formed by coating.

14. The method according to claim 11, characterized in that The providing of the display panel further includes: disposing a polarizer on a light emitting surface side of the display portion, and binding a driver chip to the binding portion, wherein the driver chip is electrically connected to a flexible circuit board, and attaching a first insulating tape to a side of the driver chip and the flexible circuit board away from the binding portion, wherein the first insulating tape is suspended and extends to a side of the flexible circuit board away from the driver chip; Providing a protective layer on the surface of the bent portion located on the light-emitting surface includes: connecting one end of the protective layer to the polarizer and the other end to the first insulating tape; Providing a conductive layer on the surface of the protective layer away from the bending portion further comprises: connecting the conductive layer to the polarizer and extending it toward the binding portion to cover the first insulating tape; Before bending the bending portion, the method further comprises: providing a support layer on a side of the backlight surface of the display portion, wherein a side of the support layer away from the display portion has a first region and a second region adjacent to each other, and the second region is provided with a metal layer; Bending the bending portion includes: bending the binding portion to the first area of ​​the supporting layer, the flexible circuit board is arranged on the metal layer, the first insulating tape is adhered to a portion of the surface of the metal layer, and the conductive layer is electrically connected to the metal layer, the conductive layer includes conductive cloth, and the conductive layer is formed by adhesion.

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