Display module, preparation method thereof and display device

Abstract

The invention provides a display module, a preparation method thereof and a display device, belongs to the technical field of display, and can solve the problems that the strength of a supporting layer of an existing display module is low, cracks are likely to be generated on the back face of the display module in a falling ball impact test, corrosive gas such as water and oxygen invades a display area, and growing dark spots are likely to be caused. And the display effect of the display module is influenced. The display module comprises a display panel and a cover plate which are arranged in a laminated mode. The display panel includes: a display portion; the cover plate comprises a first flat part, a second flat part and a first bent part; the first flat part is located on the light emitting side of the display part; the second flat part is located on one side of the display part away from the first flat part and serves as a supporting layer; the first bending part is connected between the first flat part and the second flat part.

Description

Technical Field

[0001] The present disclosure belongs to the field of display technology, and particularly relates to a display module and a preparation method thereof, and a display device. Background Art

[0002] At present, the front of flat and large-sized display module products (such as laptops, smart TVs, etc.) is covered with a cover, which is usually made of glass, which can not only enhance the impact resistance of the front of the display module, but also reduce the warping of the four corners of the display module. The back is usually made of a multi-layer composite support layer of aluminum foil or stainless steel sheet and foam, which can play a supporting and stress buffering role.

[0003] However, the front cover plate and the back support layer are made of different types of materials and are bonded at different stages of the module manufacturing process. The back support layer has weaker impact resistance than the front cover plate. Taking the display module with a cover plate thickness of 0.5mm and a support layer thickness of 0.3mm as an example, in the drop ball impact test, an 11.0g ball was used for impact. The front of the display module had no cracks, but the back of the display module was prone to cracks, allowing corrosive gases such as water and oxygen to invade the display area, which easily caused defects such as growing dark spots (GDS), affecting the display effect of the display module. Summary of the invention

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art, and provides a display module and a preparation method thereof, and a display device.

[0005] In a first aspect, an embodiment of the present disclosure provides a display module, the display module comprising: a display panel and a cover plate which are stacked; the display panel comprises: a display portion; the cover plate comprises: a first flat portion, a second flat portion and a first bent portion;

[0006] The first flat portion is located on the light emitting side of the display portion;

[0007] The second flat portion is located on a side of the display portion away from the first flat portion and serves as a supporting layer;

[0008] The first bending portion is connected between the first flat portion and the second flat portion.

[0009] In some embodiments, the first bending portion has a first surface and a second surface opposite to each other;

[0010] The first surface and / or the second surface of the first bending portion is provided with a groove.

[0011] In some embodiments, the thickness of the second flat portion is equal to the thickness of the first flat portion.

[0012] In some embodiments, the thickness of the second flat portion is equal to the thickness of the first bent portion.

[0013] In some embodiments, the display module further comprises: an anti-impact layer and a first bonding layer;

[0014] The anti-shock layer is located on a side of the second flat portion away from the display portion;

[0015] The first adhesive layer is located between the second flat portion and the display portion.

[0016] In some embodiments, the display panel further includes: a non-display portion and a second bending portion;

[0017] The non-display portion is located on a side of the impact protection layer away from the display portion;

[0018] The second bending portion is connected between the display portion and the non-display portion.

[0019] In some embodiments, the second bending portion is disposed on the driving side of the display module;

[0020] The first bending portion is disposed on a side opposite to or adjacent to the driving side of the display module.

[0021] In some embodiments, the display module further comprises: a driving chip, a flexible circuit board, a printed circuit board and a pad;

[0022] The driving chip is located on a side of the non-display portion away from the display portion;

[0023] The printed circuit board is located on a side of the anti-shock layer away from the display portion;

[0024] The driving chip is connected to the printed circuit board via a flexible circuit board;

[0025] The cushion block is located between the non-display portion and the impact protection layer.

[0026] In some embodiments, the display module further comprises: a polarizer, a second adhesive layer and an ink layer;

[0027] The polarizer is located between the display portion and the first flat portion;

[0028] The second bonding layer is located between the polarizer and the first flat portion;

[0029] The ink layer is located on a side of the first flat portion close to the display portion and is arranged around the first flat portion.

[0030] In a second aspect, an embodiment of the present disclosure provides a display device, which includes the display module provided as described above.

[0031] In a third aspect, an embodiment of the present disclosure provides a method for preparing a display module, the method for preparing a display module comprising:

[0032] A display panel is provided; the display panel comprises: a display portion;

[0033] The cover plate is bent to form a first flat portion, a second flat portion and a first bent portion; the first bent portion is connected between the first flat portion and the second flat portion;

[0034] The first flat portion is attached to the light emitting side of the display portion, and the second flat portion is attached to the side of the display portion away from the first flat portion, serving as a support layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the structure of an exemplary display module.

[0036] Figure 2 A schematic diagram of the structure of a display module provided in an embodiment of the present disclosure.

[0037] Figure 3 A schematic diagram of a first unfolded structure of a cover plate in a display module provided in an embodiment of the present disclosure.

[0038] Figure 4 A schematic diagram of a second unfolded structure of a cover plate in a display module provided in an embodiment of the present disclosure.

[0039] Figure 5 A schematic diagram of a third unfolded structure of the cover plate in the display module provided in an embodiment of the present disclosure.

[0040] Figure 6 A schematic diagram of a fourth unfolded structure of the cover plate in the display module provided in an embodiment of the present disclosure.

[0041] Figure 7 A fifth unfolded structural schematic diagram of the cover plate in the display module provided in the embodiment of the present disclosure.

[0042] Figure 8 A sixth unfolded structural schematic diagram of the cover plate in the display module provided in an embodiment of the present disclosure.

[0043] Fig. 9 A schematic diagram of a planar structure of a cover plate in a display module provided in an embodiment of the present disclosure.

[0044] Fig.10Another schematic diagram of the planar structure of the cover plate in the display module provided in the embodiment of the present disclosure.

[0045] Fig.11 A schematic diagram of a method for preparing a display module provided in the present disclosure. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure for protection, but merely represents the selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present disclosure.

[0047] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantitative restrictions, but indicate that there is at least one. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0048] The "multiple or several" mentioned in this disclosure refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0049] Figure 1 is a schematic diagram of an exemplary structure of a display module, such as Figure 1 As shown, the display module includes: a display panel 101 , a cover plate 102 , and a support layer 103 ; the cover plate 102 is located on the light emitting side of the display panel 101 , and the support layer 103 is located on the side of the display panel 101 away from the cover plate 102 .

[0050] The display panel 101 may be a flexible organic light-emitting diode (OLED) display panel, which can realize the display function. The cover plate 102 may be made of glass, which has a certain strength, and can not only enhance the impact resistance of the front of the display module, but also reduce the warping of the four corners of the display module. The support layer 103 is usually made of a multi-layer composite of aluminum foil or stainless steel sheet and foam, which can play a supporting and stress buffering role.

[0051] However, the cover plate 102 on the front and the support layer 103 on the back of the display panel 101 are made of different types of materials and are bonded at different stages of the module manufacturing process. The impact resistance of the support layer 103 on the back is weaker than that of the cover plate 102 on the front. Taking the cover plate 102 with a thickness of 0.5 mm and the support layer 103 with a thickness of 0.3 mm in the display module as an example, in the drop ball impact test, a 11.0 g ball is used for impact. There is no crack on the front of the display module, but cracks are easily generated on the back of the display module, allowing corrosive gases such as water and oxygen to invade the display area, which is easy to cause defects such as growing dark spots (GDS), affecting the display effect of the display module.

[0052] In order to solve at least one of the above-mentioned technical problems, the embodiments of the present disclosure provide a display module and a method for preparing the same, and a display device. The display module and a method for preparing the same, and a display device provided by the embodiments of the present disclosure will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0053] In a first aspect, an embodiment of the present disclosure provides a display module, Figure 2 A schematic diagram of the structure of a display module provided in an embodiment of the present disclosure, such as Figure 2 As shown, the display module includes: a stacked display panel 101 and a cover plate 102; the display panel 101 includes: a display portion 1011; the cover plate 102 includes: a first flat portion 1021, a second flat portion 1022 and a first bent portion 1023; the first flat portion 1021 is located on the light emitting side of the display portion 1011; the second flat portion 1022 is located on the side of the display portion 1011 away from the first flat portion 1021, and serves as a supporting layer 103; the first bent portion 1023 is connected between the first flat portion 1021 and the second flat portion 1022.

[0054] The display panel 101 has a display portion 1011, which can be a flexible organic light-emitting diode (OLED) display panel. The display portion 1011 has a flat surface and can realize a display function. It is understandable that the display panel 1011 can also be other types of display panels, such as a micro-organic light-emitting diode (Micro-OLED) display panel, etc., which are not listed one by one here.

[0055] The cover plate 102 may be made of glass, which may be bent to form a first flat portion 1021 , a second flat portion 1022 and a first bent portion 1023 .

[0056] Among them, the first flat portion 1021 can be located on the front side of the display unit 1011, that is, the light-emitting side of the display unit 1011, which can provide good protection for the display unit 1011, enhance the impact resistance of the front side of the display module, and reduce the warping of the four corners of the display module.

[0057] The second flat portion 1022 can be bent to the back side of the display unit 1011, that is, the non-light-emitting side of the display unit 1011, and can be used as the support layer 103 to provide good support for the display unit 1011. At the same time, it can provide good protection for the back side of the display unit 1011 and enhance the impact resistance of the back side of the display module. The first bending portion 1023 can be connected between the first flat portion 1021 and the second flat portion 1022. During the bending process, the first bending portion 1023 can be bent along the axial direction, so that a space for accommodating the display unit 1011 is formed between the first flat portion 1021, the second flat portion 1022 and the first bending portion 1023.

[0058] In the display module provided by the embodiment of the present disclosure, the first flat portion 1021 of the cover plate 102 can be located on the front of the display unit 1011 and serve as the actual cover plate structure, the second flat portion 1022 can be located on the back of the display unit 1011 and serve as the actual support layer 103, and the first flat portion 1021 and the second flat portion 1022 are connected by the first bent portion 1023. It can be seen that the first flat portion 1021 and the second flat portion 1022 are formed by bending the same cover plate 102, and the strength of the two is basically the same, so the strength of the back support layer 103 (the second flat portion 1022) of the display panel 101 can be improved, and cracks can be prevented from being generated on the back of the display module in the drop ball impact test, thereby preventing corrosive gases such as water and oxygen from invading the display area, avoiding the occurrence of defects such as growing dark spots (GDS), and further improving the display effect of the display module. At the same time, the first flat portion 1021 and the second flat portion 1022 are formed in the same process stage of the module manufacturing process, that is, the actual cover plate 102 and the support layer 103 in the display module can be formed in the same process stage, which can reduce the process steps and save the preparation cost.

[0059] In some embodiments, Figure 3 A schematic diagram of a first unfolded structure of a cover plate in a display module provided in an embodiment of the present disclosure, such as Figure 3 As shown, the cover plate 102 includes: a first flat portion 1021, a second flat portion 1022 and a first bent portion 1023. The first bent portion 1023 has a first surface and a second surface opposite to each other; a groove V is provided on the first surface of the first bent portion 1023.

[0060] The groove V can be formed on the first surface of the first bending portion 1023 by an etching process, and the cover plate 102 can be bent at the groove V to form a first flat portion 1021, a second flat portion 1022 and a first bending portion 1023. Among them, the first flat portion 1021 can be located on the front of the display unit 1011, that is, the light-emitting side of the display unit 1011, and can play a good protective role on the display unit 1011, enhance the impact resistance of the front of the display module, and can also reduce the warping of the four corners of the display module. The second flat portion 1022 can be bent to the back of the display unit 1011, that is, the non-light-emitting side of the display unit 1011, and can be used as a supporting layer 103, which plays a good supporting role on the display unit 1011, and can also play a good protective role on the back of the display unit 1011, and enhance the impact resistance of the back of the display module. The first bending portion 1023 can be connected between the first flat portion 1021 and the second flat portion 1022. During the bending process, the first bending portion 1023 can be bent along the axial direction, so that a space for accommodating the display portion 1011 is formed between the first flat portion 1021, the second flat portion 1022 and the first bending portion 1023.

[0061] The presence of the groove V can partially thin the thickness of the first bending portion 1023. In this way, during the bending process of the cover plate 102, material accumulation at the bending portion can be avoided, thereby avoiding the generation of large stress at the bending portion and preventing the cover plate 102 as a whole from breaking during the bending process, thereby ensuring the overall stability of the cover plate 102 and further improving the protection performance of the first flat portion 1021 and the support performance of the second flat portion 1022.

[0062] In some embodiments, Figure 4 A schematic diagram of a second unfolded structure of a cover plate in a display module provided in an embodiment of the present disclosure, Figure 4 The cover plate 102 shown is Figure 3 The cover plate 102 shown differs in that Figure 3 The groove V in the cover plate 102 can be formed on the first surface of the first bending portion 1023 by etching. Figure 4 The groove V in the cover plate 102 shown can be formed on the second surface of the first bent portion 1023 by using an etching process.

[0063] The presence of the groove V can partially thin the thickness of the first bending portion 1023. In this way, during the bending process of the cover plate 102, material accumulation at the bending portion can be avoided, thereby avoiding the generation of large stress at the bending portion and preventing the cover plate 102 as a whole from breaking during the bending process, thereby ensuring the overall stability of the cover plate 102 and further improving the protection performance of the first flat portion 1021 and the support performance of the second flat portion 1022.

[0064] In some embodiments, Figure 5 A schematic diagram of a third unfolded structure of a cover plate in a display module provided in an embodiment of the present disclosure, Figure 5 The cover plate 102 shown is Figure 3 The cover plate 102 shown differs in that Figure 3 The groove V in the cover plate 102 can be formed on the first surface of the first bending portion 1023 by etching. Figure 5 The number of the grooves V in the cover plate 102 shown is two, one groove V can be formed on the first surface of the first bending portion 1023 by using an etching process, and the other groove V can be formed on the second surface of the first bending portion 1023 by using an etching process.

[0065] The presence of the two grooves V can partially thin the thickness of the first bending portion 1023. In this way, during the bending process of the cover plate 102, material accumulation at the bending portion can be avoided, thereby avoiding the generation of large stress at the bending portion and preventing the cover plate 102 as a whole from breaking during the bending process, thereby ensuring the overall stability of the cover plate 102 and further improving the protection performance of the first flat portion 1021 and the support performance of the second flat portion 1022.

[0066] In some embodiments, Figures 3 to 5 As shown, the thickness of the second flat portion 1022 is equal to the thickness of the first flat portion 1021 .

[0067] exist Figures 3 to 5 In the cover plate shown, when the bending radius is large, only the first bending portion 1023 can be etched to form a groove V, and the thickness of the second flat portion 1022 is equal to the thickness of the first flat portion 1021, and the strength of the two is basically the same. Therefore, the strength of the back support layer 103 (second flat portion 1022) of the display panel 101 can be improved to prevent cracks from occurring on the back of the display module during a falling ball impact test, thereby preventing corrosive gases such as water and oxygen from invading the display area, avoiding defects such as growing dark spots (GDS), and thus improving the display effect that affects the display module.

[0068] It should be noted that the shape of the groove V can be a trapezoid, or a triangle, a square, a semicircle or other shapes, which will not be listed here one by one.

[0069] In some embodiments, Figure 6 A fourth unfolded structural diagram of the cover plate in the display module provided in the embodiment of the present disclosure, Figure 7 A fifth expanded structure diagram of the cover plate in the display module provided in the embodiment of the present disclosure is shown. Figure 8 A sixth expanded structure diagram of a cover plate in a display module provided in an embodiment of the present disclosure is shown in FIG. Figures 6 to 8 As shown, the thickness of the second flat portion 1022 is equal to the thickness of the first bent portion 1023 .

[0070] The thickness of the second flat portion 1022 is equal to the thickness of the first bent portion 1023, that is, when the bending radius is small, while the first bent portion 1023 is etched to form a groove V, the area where the second flat portion 1022 is located in the cover plate 102 can be etched, so that the thickness of the second flat portion 1022 can be reduced. While ensuring that the second flat portion 1022 has a high strength, the overall thickness of the display module can be reduced, which is conducive to the thinness of the display module and improves the user experience.

[0071] In some embodiments, Figure 2As shown, the display module further includes: an anti-shock layer 104 and a first adhesive layer 105 ; the anti-shock layer 104 is located on the side of the second flat portion 1022 away from the display portion 1011 ; and the first adhesive layer 105 is located between the second flat portion 1022 and the display portion 1011 .

[0072] The impact-proof layer 104 can be made of a buffer material such as polyethylene terephthalate (PET), which has a certain buffering effect and can further enhance the protection of the back of the display unit 1011 and enhance the impact resistance of the back of the display module.

[0073] The first adhesive layer 105 can bond the second flat portion 1022 to the display portion 1011 , and can be specifically made of pressure sensitive adhesives (PSA).

[0074] In some embodiments, Figure 2 As shown, the display panel 101 also includes: a non-display portion 1012 and a second bending portion 1013 ; the non-display portion 1012 is located on the side of the impact protection layer 104 away from the display portion 1011 ; and the second bending portion 1013 is connected between the display portion 1011 and the non-display portion 1012 .

[0075] The display panel 101 can be bent to form a display portion 1011, a non-display portion 1012 and a second bending portion 1013. The second bending portion 1013 can be bent along the axial direction so that the non-display portion 1012 is bent to the non-light-emitting side of the display portion 1011. In this way, there is no need to set structures such as binding pads on the display portion 1011, thereby reducing the border width of the display portion 1011, which is beneficial to the narrow border of the display module, thereby increasing the screen-to-body ratio of the display module, and further improving the display effect of the display module.

[0076] In some embodiments, Figure 2 As shown, the second bending portion 1013 is disposed on the driving side of the display module; the first bending portion 1023 is disposed on a side opposite to or adjacent to the driving side of the display module.

[0077] The driving side is the side of the display module used to input the driving signal. The second bending portion 1013 is arranged on the driving side of the display module, and the first bending portion 1023 is arranged on the side opposite to or adjacent to the driving side of the display module. That is, the second bending portion 1013 and the first bending portion 1023 are respectively arranged on different sides of the display module, which can avoid mutual influence between the second bending portion 1013 of the display panel 101 and the first bending portion 1023 of the cover plate 102.

[0078] Fig. 9A schematic diagram of a planar structure of a cover plate in a display module provided in an embodiment of the present disclosure is shown in FIG. Fig. 9 As shown, the cover plate 102 can be bent up and down to form a first flat portion 1021, a second flat portion 1022 and a first bent portion 1023, so that the first bent portion 1023 of the cover plate 102 is arranged on the side opposite to the driving side of the display module, that is, the upper side of the display module.

[0079] Fig.10 Another schematic diagram of the planar structure of the cover plate in the display module provided in the embodiment of the present disclosure is as follows: Fig.10 As shown, the cover plate 102 can be bent left and right to form a first flat portion 1021, a second flat portion 1022 and a first bent portion 1023 so that the first bent portion 1023 of the cover plate 102 is arranged on a side adjacent to the driving side of the display module, that is, the left or right side of the display module.

[0080] In some embodiments, Figure 2 As shown, the display module also includes: a driving chip 106, a flexible circuit board 107, a printed circuit board 108 and a pad 109; the driving chip 106 is located on the side of the non-display part 1012 away from the display part 1011; the printed circuit board 108 is located on the side of the anti-shock layer 104 away from the display part 1011; the driving chip 106 and the printed circuit board 108 are connected through the flexible circuit board 107; the pad 109 is located between the non-display part 1012 and the anti-shock layer 104.

[0081] The driver chip 106 can provide a driving signal for the pixel unit in the display part 1011 so that the pixel unit therein emits light to realize the display function. The printed circuit board 108 is integrated with a timing controller, a central control board and other structures, which can provide a timing control signal and the like for the driver chip 106. The driver chip 106 and the printed circuit board 108 can be connected through a flexible circuit board 107 so that signals are transmitted between the two through the flexible circuit board 107. The pad 109 can be located between the non-display part 1012 and the anti-impact layer 104, and the non-display part 1012 can be raised so that the driver chip 106 and the printed circuit board 108 are basically on the same plane, avoiding a large degree of bending of the flexible circuit board 107 between the two, and improving the stability of signal transmission.

[0082] In some embodiments, Figure 2 As shown, the display module also includes: a polarizer 110, a second bonding layer 111 and an ink layer 112; the polarizer 110 is located between the display portion 1011 and the first flat portion 1021; the second bonding layer 111 is located between the polarizer 110 and the first flat portion 1021; the ink layer 112 is located on the side of the first flat portion 1021 close to the display portion 1011, and is arranged around the first flat portion 1021.

[0083] The polarizer 110 can deflect ambient light and convert it into polarized light. After being reflected by the reflective film layer in the display unit 1011 (such as the anode of the light-emitting device), the polarized light cannot be emitted by the polarizer 110 again. Therefore, it can play an anti-reflection role, which is beneficial to improving the display effect of the display module.

[0084] The second adhesive layer 111 may specifically be an optical adhesive layer, which can adhere the polarizer 110 , the display portion 1011 , and the first flat portion 1021 of the cover plate 102 .

[0085] The ink layer 112 is arranged around the first flat portion 1021 in a ring shape, corresponding to the periphery of the display portion 1011, and can shield the periphery of the display portion 1011 to prevent light leakage around the display portion 1011, thereby improving the display effect of the display module.

[0086] In a second aspect, an embodiment of the present disclosure provides a display device, which includes a display module as provided in any of the above embodiments. The display device can be, for example, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a vehicle-mounted device, or any other product with a display function. Other essential components of the display device should be understood by those of ordinary skill in the art, and will not be described in detail here, nor should they be used as a limitation to the present disclosure.

[0087] In a third aspect, an embodiment of the present disclosure provides a method for preparing a display module, which is used to prepare a display module provided by any of the above embodiments. Fig.11 A schematic diagram of a method for preparing a display module provided by the present disclosure is shown in FIG. Fig.11 As shown, the method for preparing the display module includes the following steps S1101 to S1103.

[0088] S1101, provide a display panel; the display panel includes: a display portion.

[0089] In the above step S1101, the display panel 101 has a display portion 1011, which can be a flexible organic light-emitting diode (OLED) display panel. The display portion 1011 has a flat surface and can realize a display function. It is understandable that the display panel 1011 can also be other types of display panels, such as a micro-organic light-emitting diode (Micro-OLED) display panel, etc., which are not listed one by one here.

[0090] S1102, bend the cover plate to form a first flat portion, a second flat portion and a first bent portion; the first bent portion is connected between the first flat portion and the second flat portion.

[0091] S1103, laminating the first flat portion to the light emitting side of the display portion, and laminating the second flat portion to the side of the display portion away from the first flat portion, to serve as a support layer.

[0092] In the above steps S1102 and S1103 , the cover plate 102 may be made of glass, which may be bent to form a first flat portion 1021 , a second flat portion 1022 and a first bent portion 1023 .

[0093] Among them, the first flat portion 1021 can be located on the front side of the display unit 1011, that is, the light-emitting side of the display unit 1011, which can provide good protection for the display unit 1011, enhance the impact resistance of the front side of the display module, and reduce the warping of the four corners of the display module.

[0094] The second flat portion 1022 can be bent to the back side of the display unit 1011, that is, the non-light-emitting side of the display unit 1011, and can be used as the support layer 103 to provide good support for the display unit 1011. At the same time, it can provide good protection for the back side of the display unit 1011 and enhance the impact resistance of the back side of the display module. The first bending portion 1023 can be connected between the first flat portion 1021 and the second flat portion 1022. During the bending process, the first bending portion 1023 can be bent along the axial direction, so that a space for accommodating the display unit 1011 is formed between the first flat portion 1021, the second flat portion 1022 and the first bending portion 1023.

[0095] In the method for preparing the display module provided by the embodiment of the present disclosure, the cover plate 102 is bent to form a first flat portion 1021, a second flat portion 1022 and a first bent portion 1023. The first flat portion 1021 of the cover plate 102 can be located on the front side of the display portion 1011 and serve as an actual cover plate structure. The second flat portion 1022 can be located on the back side of the display portion 1011 and serve as an actual supporting layer 103. The first flat portion 1021 and the second flat portion 1022 are connected via the first bent portion 1023. It can be seen that the first flat portion 1021 and the second flat portion 1022 are formed by bending the same cover plate 102, and the strength of the two is basically the same. Therefore, the strength of the back support layer 103 (second flat portion 1022) of the display panel 101 can be improved to prevent cracks from being generated on the back of the display module during the drop ball impact test, thereby preventing corrosive gases such as water and oxygen from invading the display area and avoiding defects such as growing dark spots (GDS), thereby improving the display effect of the display module. At the same time, the first flat portion 1021 and the second flat portion 1022 are formed in the process stage of the same module manufacturing process, that is, the actual cover plate 102 and the support layer 103 in the display module can be formed in the same process stage, which can reduce the process steps and save the preparation cost.

[0096] The cover plate 102 is bent to form a first flat portion 1021 , a second flat portion 1022 and a first bent portion 1023 . Before that, the cover plate 102 may be partially etched to form a groove V. The groove V may be provided on the first surface and / or the second surface of the bent portion 1023 .

[0097] The presence of the groove V can partially thin the thickness of the first bending portion 1023. In this way, during the bending process of the cover plate 102, material accumulation at the bending portion can be avoided, thereby avoiding the generation of large stress at the bending portion and preventing the cover plate 102 as a whole from breaking during the bending process, thereby ensuring the overall stability of the cover plate 102 and further improving the protection performance of the first flat portion 1021 and the support performance of the second flat portion 1022.

[0098] When the bending radius is large, only the first bending portion 1023 can be etched to form a groove V. The thickness of the second flat portion 1022 is equal to the thickness of the first flat portion 1021, and the strengths of the two are basically the same. Therefore, the strength of the back support layer 103 (second flat portion 1022) of the display panel 101 can be improved to prevent cracks from occurring on the back of the display module during a falling ball impact test, thereby preventing corrosive gases such as water and oxygen from invading the display area and avoiding defects such as growing dark spots (Growing DarkSpot, GDS), thereby improving the display effect that affects the display module.

[0099] When the bending radius is small, while etching the first bending portion 1023 to form the groove V, the area where the second flat portion 1022 in the cover plate 102 is located can be etched. This can reduce the thickness of the second flat portion 1022. While ensuring that the second flat portion 1022 has a high strength, the overall thickness of the display module can be reduced, which is beneficial to making the display module lighter and thinner and improving the user experience.

[0100] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0101] In the several embodiments provided in the present disclosure, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the position of the components shown is only a logical functional position, and there may be other position arrangements in actual implementation.

[0102] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display module, characterized in that: The display module comprises: a display panel and a cover plate which are stacked; the display panel comprises: a display portion; the cover plate comprises: a first flat portion, a second flat portion and a first bending portion; The first flat portion is located on the light emitting side of the display portion; The second flat portion is located on a side of the display portion away from the first flat portion and serves as a supporting layer; The first bending portion is connected between the first flat portion and the second flat portion.

2. The display module according to claim 1, characterized in that: The first bending portion has a first surface and a second surface opposite to each other; The first surface and / or the second surface of the first bending portion is provided with a groove.

3. The display module according to claim 2, characterized in that: The thickness of the second flat portion is equal to the thickness of the first flat portion.

4. The display module according to claim 2, characterized in that: The thickness of the second flat portion is equal to the thickness of the first bent portion.

5. The display module according to claim 1, characterized in that: The display module further includes: an anti-impact layer and a first bonding layer; The anti-shock layer is located on a side of the second flat portion away from the display portion; The first adhesive layer is located between the second flat portion and the display portion.

6. The display module according to claim 5, characterized in that: The display panel further includes: a non-display portion and a second bending portion; The non-display portion is located on a side of the impact protection layer away from the display portion; The second bending portion is connected between the display portion and the non-display portion.

7. The display module according to claim 6, characterized in that: The second bending portion is disposed on the driving side of the display module; The first bending portion is disposed on a side opposite to or adjacent to the driving side of the display module.

8. The display module according to claim 6, characterized in that: The display module also includes: a driving chip, a flexible circuit board, a printed circuit board and a pad; The driving chip is located on a side of the non-display portion away from the display portion; The printed circuit board is located on a side of the anti-shock layer away from the display portion; The driving chip is connected to the printed circuit board via a flexible circuit board; The cushion block is located between the non-display portion and the impact protection layer.

9. The display module according to claim 1, characterized in that: The display module further includes: a polarizer, a second bonding layer and an ink layer; The polarizer is located between the display portion and the first flat portion; The second bonding layer is located between the polarizer and the first flat portion; The ink layer is located on a side of the first flat portion close to the display portion and is arranged around the first flat portion.

10. A display device, characterized in that: The display device comprises the display module according to any one of claims 1 to 9.

11. A method for preparing a display module, characterized in that: The method for preparing the display module comprises: A display panel is provided; the display panel comprises: a display portion; The cover plate is bent to form a first flat portion, a second flat portion and a first bent portion; the first bent portion is connected between the first flat portion and the second flat portion; The first flat portion is attached to the light emitting side of the display portion, and the second flat portion is attached to the side of the display portion away from the first flat portion, serving as a support layer.

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