Display module, preparation method thereof and display device

Abstract

The embodiment of the invention provides a display module and a preparation method thereof and a display device, the display module comprises a display panel and a flexible circuit board, the display panel comprises a display part, a first binding part and a bending part, the bending part is connected with the display part and the first binding part, the first binding part is bent to the backlight side of the display part through the bending part, and the flexible circuit board is arranged on the display panel. An accommodating space is defined between the first binding part and the display part; the flexible circuit board is connected with the first binding part in a binding mode, and at least part of the flexible circuit board extends to the containing space. According to the technology provided by the invention, the flexible circuit board is arranged to be the main body part and the extension part, and the partial structure of the extension part extends into the accommodating space, so that the occupied area of the flexible circuit board and the first binding part on the backlight side of the display part is reduced, and more space for mounting components such as electronic elements and batteries is reserved for the display module; the capacity of the battery can be set to be larger by the saved space, so that the cruising ability of the battery is improved.

Description

Technical Field

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

[0002] The design of display devices such as smartphones is increasingly focused on being thin and light. While ensuring performance, display devices try to reduce space waste in design as much as possible in order to obtain optimal device performance within a limited volume.

[0003] As an important component of the display device, the display module is required to have a thin display layer and a long battery life. Therefore, how to reduce the thickness of the display device and improve the battery life of the display module is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present application provide a display module and a method for manufacturing the same, and a display device to solve or alleviate one or more technical problems in the prior art.

[0005] As one aspect of an embodiment of the present application, an embodiment of the present application provides a display module, which includes:

[0006] The display panel comprises a display portion, a first binding portion and a bending portion, wherein the bending portion is connected to the display portion and the first binding portion respectively, the first binding portion is bent to the backlight side of the display portion through the bending portion, and an accommodation space is defined between the first binding portion and the display portion;

[0007] The flexible circuit board is bound and connected to the first binding portion, and at least a portion of the flexible circuit board extends to the accommodating space.

[0008] In some embodiments, the flexible circuit board includes a main body portion and an extension portion connected to each other, the main body portion is bound and connected to the first binding portion, and a partial structure of the extension portion extends to the accommodating space.

[0009] In some embodiments, the main body includes a first layer and a second layer, the first layer includes a second binding portion; in the direction of the first binding portion toward the display portion, the first layer, the second layer and the extension portion are stacked in sequence, the first binding portion is bound and connected to the second binding portion, and the extension portion is arranged on a side of the second layer away from the first layer.

[0010] In some embodiments, a portion of the structure of the second binding portion is disposed on a side of the first binding portion away from the display portion.

[0011] In some embodiments, the orthographic projection of the second layer on the display portion and the orthographic projection of the first binding portion on the display portion are staggered, and the orthographic projection of the first layer on the display portion and the orthographic projection of the first binding portion on the display portion overlap.

[0012] In some embodiments, the second layer defines a groove body, the groove body is arranged through the second layer, and the orthographic projection of the second binding portion on the display portion at least partially overlaps with the orthographic projection of the groove body on the display portion.

[0013] In some embodiments, a first adhesive layer is further included, and the first adhesive layer respectively connects a side of the extending portion facing the display portion and a side of the display portion facing the extending portion.

[0014] In some embodiments, a heat dissipation layer is defined on a side of the display portion facing the first binding portion, and a side of the extension portion facing the display portion is connected to the heat dissipation layer via a first adhesive layer.

[0015] In some embodiments, a first buffer protection layer is further defined between the heat dissipation layer and the display portion.

[0016] In some embodiments, a second adhesive layer is further included, and the second adhesive layer respectively connects a side of the extension portion facing the first binding portion and a side of the first binding portion facing the extension portion.

[0017] In some embodiments, a second buffer protection layer is defined on a side of the first binding portion facing the display portion, and a side of the extension portion facing the first binding portion is connected to the second buffer protection layer via a second adhesive layer.

[0018] As another aspect of the present application, a display device is also provided, and the display device includes a display module as described in any one of the above items.

[0019] As another aspect of the present application, the present application further provides a method for preparing a display module, which is used to prepare any of the above display modules, and the preparation method comprises:

[0020] A display panel is provided, the display panel comprising a display portion, a first binding portion and a bending portion, the first binding portion is bent to a backlight side of the display portion through the bending portion, and an accommodation space is defined between the first binding portion and the display portion;

[0021] A flexible circuit board is provided, the flexible circuit board comprising a main body and an extension part; the main body comprises a first layer and a second layer, the first layer comprises a second binding part; in a direction from the first binding part to the display part, the first layer and the second layer are stacked in sequence;

[0022] Bend the side of the extension portion away from the second layer and bond it to the second layer through the bonding block, so that the orthographic projection of the bent extension portion on the display portion is interlaced with the orthographic projection of the second binding portion on the display portion;

[0023] Binding and connecting the second binding portion to a side of the first binding portion facing away from the display portion;

[0024] The adhesive block is removed so that the side of the extension away from the second layer is inserted into the receiving space.

[0025] The embodiments of the present application have the following beneficial effects:

[0026] According to the technology of the present application, by setting the flexible circuit board as a main body and an extension part, and extending part of the structure of the extension part into the accommodating space, the area occupied by the flexible circuit board and the first binding part on the backlight side of the display part is reduced, and more space for installing components such as electronic components and batteries is reserved for the display module. The saved space can be used to set the battery capacity to be larger, thereby improving the battery life, so that the display module can provide a higher battery life without changing the overall volume.

[0027] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0029] Figure 1 A cross-sectional view of a display module according to an embodiment of the present application is shown;

[0030] Figure 2 A schematic diagram showing the structure of a flexible circuit board according to an embodiment of the present application is shown;

[0031] Figure 3 A schematic diagram showing the connection relationship between the flexible circuit board and the first binding portion according to an embodiment of the present application;

[0032] Figure 4 A cross-sectional view showing a flexible circuit board and a first binding portion according to an embodiment of the present application;

[0033] Figure 5 A schematic structural diagram of a flexible circuit board according to an embodiment of the present application is shown.

[0034] Description of reference numerals:

[0035] 1. Display module;

[0036] 10. display panel; 11. display portion; 12. first binding portion; 13. bending portion; 14. accommodation space;

[0037] 20. flexible circuit board; 21. main body; 211. first layer; 2111. second binding part; 212. second layer; 2121. slot; 22. extension part;

[0038] 30. a first bonding layer;

[0039] 40. Heat dissipation layer;

[0040] 50. A first buffer protection layer;

[0041] 60. second adhesive layer;

[0042] 70. A second buffer protection layer;

[0043] 80. Adhesive block. DETAILED DESCRIPTION

[0044] In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature. As an important component of a mobile phone, the display module requires a thinner display layer during design, and also requires the display module to have a longer battery life. Therefore, how to reduce the thickness of the display device and improve the battery life of the display module is a technical problem that urgently needs to be solved.

[0045] Figure 1 A cross-sectional view of a display module 1 according to an embodiment of the present application is shown. Figure 2 A schematic diagram showing the structure of a flexible circuit board 20 according to an embodiment of the present application is shown. Figure 3 FIG. 1 is a schematic diagram showing the connection relationship between the flexible circuit board 20 and the first binding portion 12 according to an embodiment of the present application, see Figures 1 to 3 The present application proposes a display module 1 , which includes: a display panel 10 and a flexible circuit board 20 .

[0046] In the embodiment of the present application, the display panel 10 includes a display portion 11, a first binding portion 12, and a bending portion 13. The bending portion 13 is connected to the display portion 11 and the first binding portion 12 respectively. The first binding portion 12 is bent to the backlight side of the display portion 11 through the bending portion 13. An accommodating space 14 is defined between the first binding portion 12 and the display portion 11. In the related art, a supporting portion is generally provided in the accommodating space 14. The supporting portion is used to bond the first binding portion 12 and the display portion 11, so as to provide support for the first binding portion 12 and the display portion 11, thereby ensuring that the bending portion 13 will not be deformed after being bent, so that the bending portion 13 is always fixed at a preset bending angle, which can effectively prevent the electronic components or circuits located on the bending portion 13 from being damaged. The flexible circuit board 20 in the related art is arranged on the backlight side of the display unit 11. In addition to the flexible circuit board 20, the backlight side of the display unit 11 also has components such as batteries and electronic components installed. If the area of ​​the backlight side of the display unit 11 occupied by the flexible circuit board 20 is too large, the installation space of the battery and electronic components will be reduced, which is not conducive to the high battery life and lightweight concept of the display module 1.

[0047] Based on this, the display module 1 of the embodiment of the present application includes a flexible circuit board 20 , the flexible circuit board 20 is bound and connected to the first binding portion 12 , and at least a portion of the flexible circuit board 20 extends to the accommodating space 14 .

[0048] According to the embodiment of the present application, the supporting part in the related art is eliminated so that an accommodation space 14 is formed between the first binding part 12 and the display part 11, and then at least a part of the flexible circuit board 20 of the present application is inserted into the accommodation space 14. Such a configuration can reduce the occupied area of ​​the flexible circuit board 20 and the first binding part 12 on the backlight side of the display part 11, and reserve more space for the display module 1 for installing components such as electronic components and batteries. The saved space can be used to set the battery capacity to be larger, thereby improving the battery life, so that the display module 1 provides a higher battery life without changing the overall volume.

[0049] Exemplarily, the area where the orthographic projections of the first binding portion 12 and the bending portion 13 are located on the display portion 11 is the first area, and the area on the display portion 11 that does not correspond to the first binding portion 12 and the bending portion 13 is the second area. In some examples, part of the structure of the flexible circuit board 20 is located in the first area, and another part of the structure of the flexible circuit board 20 is located in the second area. In other examples, the entire structure of the flexible circuit board 20 is located in the first area, that is, the entire structure is located in the accommodation space 14 between the display portion 11 and the first binding portion 12.

[0050] In some embodiments, a plurality of first binding pins (also called FPC bumps) are disposed on the flexible circuit board 20 , and at least a portion of the plurality of first binding pins are electrically connected to the first binding portion 12 through a connecting portion.

[0051] In some examples, the connecting portion may be an anisotropic conductive film (ACF), which has the advantages of relatively low process cost and relatively small space occupation, thereby enabling the area between the flexible circuit board 20 and the first binding portion 12 for installing the connecting portion to be reduced. The anisotropic conductive film mainly includes conductive particles, insulating adhesive material, an upper protective film and a lower protective film. The conductive particles and the insulating adhesive material are located between the upper protective film and the lower protective film. During the assembly process, the upper protective film and the lower protective film can be torn off, and the anisotropic conductive film can be pasted on the flexible circuit board 20 and the first binding portion 12 respectively, so as to connect the flexible circuit board 20 and the first binding portion 12 through the anisotropic conductive film.

[0052] During the signal transmission process, the signal of the flexible circuit board 20 is input into the first binding portion 12 through the conductive particles of the anisotropic conductive adhesive film, thereby realizing signal transmission between the display portion 11 and the flexible circuit board 20 .

[0053] In some embodiments, the flexible circuit board 20 includes a main body portion 21 and an extension portion 22 connected to each other. The main body portion 21 is bound and connected to the first binding portion 12 , and a portion of the extension portion 22 extends to the accommodating space 14 .

[0054] According to the embodiment of the present application, by setting the flexible circuit board 20 as the main body 21 and the extension part 22, and extending part of the structure of the extension part 22 into the accommodating space 14, the occupied area of ​​the flexible circuit board 20 and the first binding part 12 on the backlight side of the display part 11 is reduced, and more space for installing components such as electronic components and batteries is reserved for the display module 1. The saved space can be used to set the battery capacity to be larger, thereby improving the battery life, so that the display module 1 can provide a higher battery life without changing the overall volume.

[0055] In the embodiment of the present application, various electronic components are provided on the main body 21 and the extension portion 22, and the electronic components include but are not limited to: resistors, capacitors, inductors, integrated circuits, conductive tracks, etc. The main body 21 and the extension portion 22 together constitute the overall structure of the flexible circuit board 20, and the functions of the main body 21 and the extension portion 22 respectively constitute the overall function of the flexible circuit board 20.

[0056] For some examples, see Figures 1 to 3, the main body 21 and the extension 22 can be designed as an integrated unit. In other examples, the main body 21 and the extension 22 can be designed as separate units and then connected by welding. It should be noted that whether the main body 21 and the extension 22 are designed as separate units or as an integrated unit is not limited here, and in specific applications, those skilled in the art can determine it according to actual needs.

[0057] Figure 4 A cross-sectional view of the flexible circuit board 20 and the first binding portion 12 according to an embodiment of the present application is shown. In some embodiments, see Figure 4 The main body 21 includes a first layer 211 and a second layer 212, and the first layer 211 includes a second binding portion 2111. In the direction from the first binding portion 12 to the display portion 11, the first layer 211, the second layer 212 and the extension portion 22 are stacked in sequence, the first binding portion 12 is bound and connected to the second binding portion 2111, and the extension portion 22 is arranged on a side of the second layer 212 away from the first layer 211.

[0058] It can be understood that the first layer 211 and the second layer 212 are both circuit layers and can be stacked to form the main body 21 .

[0059] In some embodiments, a plurality of first binding pins (also called FPC bumps) are disposed on the second binding portion 2111 , and at least part of the plurality of first binding pins are electrically connected to the first binding portion 12 through a connecting portion.

[0060] For some examples, see Figure 4 The thickness of the second layer 212 is greater than the thickness of the first binding portion 12. With this arrangement, the second binding portion 2111 of the first layer 211 can extend to the side of the first binding portion 12 away from the display portion 11 without bending and be bound and connected to the side of the first binding portion 12 away from the display portion 11, and the extending portion 22 can extend to the side of the first binding portion 12 close to the display portion 11 without bending.

[0061] In some embodiments, the main body 21 further includes a third circuit board or a fourth circuit layer. It should be noted that the number of circuit layers in the main body 21 is not limited here, and in specific applications, those skilled in the art can determine it according to actual needs. For example, when the flexible circuit board 20 is required to provide sufficient support strength, the main body 21 can include multiple circuit layers, for example: three layers, four layers, five layers, etc.

[0062] In some embodiments, see Figure 1 , Figure 3 as well as Figure 4, part of the structure of the second binding portion 2111 is arranged on the side of the first binding portion 12 away from the display portion 11, and the structure of the second binding portion 2111 located on the side of the first binding portion 12 away from the display portion 11 is bound and connected to the first binding portion 12. In this way, the first binding portion 12 and the second binding portion 2111 are overlapped and bound in a direction perpendicular to the display portion 11, so as to further reduce the area occupied by the flexible circuit board 20 in the second region, thereby reducing the area occupied by the flexible circuit board 20 and the first binding portion 12 on the backlight side of the display portion 11, and reserving more space for the display module 1 to install components such as electronic components and batteries. The saved space can be used to set the battery capacity larger, thereby improving the battery life, so that the display module 1 provides a higher battery life without changing the overall volume.

[0063] In some embodiments, see Figure 1 The orthographic projection of the second layer 212 on the display portion 11 and the orthographic projection of the first binding portion 12 on the display portion 11 are alternately arranged, and the orthographic projection of the first layer 211 on the display portion 11 and the orthographic projection of the first binding portion 12 on the display portion 11 overlap. In this way, a gap of a certain distance is formed between the second layer 212 and the first binding portion 12. The setting of the gap can allow a certain error in the process of installing the flexible circuit board 20 on the first binding portion 12, thereby reducing the difficulty of installation.

[0064] In some embodiments, see Figure 2 and Figure 3 The second layer 212 is defined by a groove body 2121, and the groove body 2121 is arranged to penetrate the second layer 212. The orthographic projection of the second binding portion 2111 on the display portion 11 at least partially overlaps with the orthographic projection of the groove body 2121 on the display portion 11. Since the second binding portion 2111 of the first layer 211 and the first binding portion 12 are bound and connected, part of the structure of the first binding portion 12 will interfere with the second layer 212. Based on this, the present application realizes the avoidance of the second layer 212 to the first binding portion 12 through the arrangement of the groove body 2121, that is, the part of the structure of the first binding portion 12 is allowed to extend into the groove body 2121, so as to avoid structural interference between the first binding portion 12 and the second layer 212, which can reduce the interference that may occur in the process of installing the flexible circuit board 20 on the first binding portion 12, which is conducive to reducing the difficulty of installation.

[0065] In some examples, when the sizes of the first binding portion 12 and the second binding portion 2111 are consistent, the present application can completely overlap the orthographic projection of the second binding portion 2111 on the display portion 11 with the orthographic projection of the groove body 2121 on the display portion 11, so that the first binding portion 12 can extend into the groove body 2121 to avoid interference between the partial structure of the first binding portion 12 and the second layer 212 when the second binding portion 2111 of the first layer 211 and the first binding portion 12 are bound and connected.

[0066] In other examples, when the size of the first binding portion 12 is larger than the size of the second binding portion 2111 due to process errors, the present application can set the orthographic projection of the groove body 2121 on the display portion 11 to be larger than the orthographic projection of the second binding portion 2111 on the display portion 11, so that the first binding portion 12 can extend into the groove body 2121 to avoid the situation where the second binding portion 2111 of the first layer 211 and the first binding portion 12 are bound and connected, causing the partial structure of the first binding portion 12 to interfere with the second layer 212.

[0067] It should be noted that setting the orthographic projection of the groove body 2121 on the display portion 11 to be larger than the orthographic projection of the second binding portion 2111 on the display portion 11 can also allow a certain error in the process of allowing the flexible circuit board 20 to be set on the first binding portion 12, that is, even if the relative position of the flexible circuit board 20 and the first binding portion 12 is offset, the binding connection between the flexible circuit board 20 and the first binding portion 12 can be completed, thereby reducing the installation difficulty of the present application.

[0068] In the embodiment of the present application, the groove body 2121 can also play the role of a crack stop groove, that is, when the second binding portion 2111 is impacted or pressurized, if a crack is generated in the second binding portion 2111, the crack stop groove can prevent the crack from further spreading to other positions of the flexible circuit board 20. Secondly, the crack stop groove can enhance the strength and stability of the flexible circuit board 20, especially when the flexible circuit board 20 is subjected to external force, it can better disperse the pressure and reduce the impact on other parts of the flexible circuit board 20.

[0069] In some embodiments, see Figure 1 The present application also includes a first adhesive layer 30, which respectively connects the side of the extension portion 22 facing the display portion 11 and the side of the display portion 11 facing the extension portion 22. This arrangement, on the one hand, improves the connection stability between the extension portion 22 and the display portion 11, and on the other hand, the connection between the extension portion 22 and the display portion 11 can be achieved through the first adhesive layer 30, thereby achieving the installation and fixation of the extension portion 22, and preventing the display module 1 from being scratched by the extension portion 22 and the first binding portion 12 when a collision occurs.

[0070] In some embodiments, see Figure 1 A heat dissipation layer 40 is defined on a side of the display portion 11 facing the first binding portion 12 , and a side of the extension portion 22 facing the display portion 11 is connected to the heat dissipation layer 40 through the first adhesive layer 30 .

[0071] In some embodiments, see Figure 1 A first buffer protection layer 50 is further defined between the heat dissipation layer 40 and the display portion 11 .

[0072] According to the embodiment of the present application, the heat dissipation layer 40 is provided to dissipate heat for the display portion 11 , and the first buffer protection layer 50 is provided to protect and support the display portion 11 .

[0073] In some embodiments, see Figure 1 The present application further includes a second adhesive layer 60 , which respectively connects a side of the extension portion 22 facing the first binding portion 12 and a side of the first binding portion 12 facing the extension portion 22 .

[0074] According to the embodiment of the present application, the present application cancels the connecting portion between the display portion 11 and the first binding portion 12 in the related art, extends into the accommodating space 14 through the extending portion 22 of the flexible circuit board 20, and respectively adheres the display portion 11 and the first binding portion 12 through the first adhesive layer 30 and the second adhesive layer 60, so that the flexible circuit board 20 of the present application is fixed between the first binding portion 12 and the display portion 11. Such a configuration can, on the one hand, reduce the occupied area of ​​the flexible circuit board 20 and the first binding portion 12 on the backlight side of the display portion 11, and reserve more space for the display module 1 for installing components such as electronic components and batteries. The saved space can set the battery capacity to be larger, improve the battery life, so that the display module 1 provides a higher battery life without changing the overall volume. On the other hand, the flexible circuit board 20 is respectively adhered to the display portion 11 and the first binding portion 12 through the first adhesive layer 30 and the second adhesive layer 60, which can replace the role of the connecting portion in the related art and support and fix the display portion 11 and the first binding portion 12.

[0075] In some embodiments, see Figure 1 A second buffer protection layer 70 is defined on a side of the first binding portion 12 facing the display portion 11 , and a side of the extension portion 22 facing the first binding portion 12 is connected to the second buffer protection layer 70 through a second adhesive layer 60 .

[0076] In some examples, the driver chip is disposed on the side of the first binding portion 12 away from the display portion 11, the driver chip is disposed adjacent to the second binding portion 2111, the second binding portion 2111 of the flexible circuit board 20 is disposed on the side of the first binding portion 12 away from the display portion 11, and the extension portion 22 of the flexible circuit board 20 is disposed on the side of the first binding portion 12 close to the display portion 11. Such an arrangement can improve the structural strength of the first binding portion 12 and avoid deformation of the first binding portion 12. Secondly, the present application arranges the driver chip on the side of the first binding portion 12 away from the display portion 11. The arrangement of the extension portion 22 and the second binding portion 2111 of the flexible circuit board 20 can improve the structural strength of the first binding portion 12, thereby avoiding deformation of the first binding portion 12, and further avoiding the unstable connection between the driver chip and the first binding portion 12 due to deformation of the first binding portion 12, which is beneficial to improving the connection stability between the driver chip and the first binding portion 12.

[0077] As another aspect of the present application, the present application further provides a display device, and the display device includes the display module 1 according to any one of the above embodiments.

[0078] It is understandable that the display device can have all the features and advantages of the display module 1 described above, which will not be described in detail here.

[0079] In some embodiments, the display device is a product with an image display function. Optionally, the display device can be used to display static images, such as pictures, photos, etc.; the display device can also be used to display dynamic images, such as videos, game screens, etc.

[0080] In some embodiments, display devices include but are not limited to laptop computers, mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automobile displays, navigators, cockpit controls and / or displays, displays of camera views, electronic photographs, electronic billboards or signs, projectors, packaging and aesthetic structures, etc.

[0081] As another aspect of the present application, the present application further provides a method for preparing a display module 1, which is used to prepare the display module 1 as in any of the above embodiments, and the preparation method comprises:

[0082] S1. Provide a display panel 10, which includes a display portion 11, a first binding portion 12 and a bending portion 13. The first binding portion 12 is bent to the backlight side of the display portion 11 through the bending portion 13, and an accommodating space 14 is defined between the first binding portion 12 and the display portion 11.

[0083] S2. Provide a flexible circuit board 20, which includes a main body 21 and an extension portion 22; the main body 21 includes a first layer 211 and a second layer 212, and the first layer 211 includes a second binding portion 2111; in the direction from the first binding portion 12 to the display portion 11, the first layer 211 and the second layer 212 are stacked in sequence.

[0084] S3, Figure 5 A schematic diagram showing the structure of the flexible circuit board 20 according to an embodiment of the present application is shown in FIG. Figure 5 , bend the side of the extension portion 22 away from the second layer 212 and bond it to the second layer 212 through the bonding block 80, so that the orthographic projection of the bent extension portion 22 on the display portion 11 is staggered with the orthographic projection of the second binding portion 2111 on the display portion 11.

[0085] S4. Bind and connect the second binding portion 2111 to the side of the first binding portion 12 facing away from the display portion 11 .

[0086] S5 , removing the adhesive block 80 , so that the side of the extension portion 22 away from the second layer 212 is inserted into the receiving space 14 .

[0087] In the embodiment of the present application, after the extension portion 22 is inserted into the accommodating space 14, the first adhesive layer 30 is used to respectively connect the side of the extension portion 22 facing the display portion 11 and the side of the display portion 11 facing the extension portion 22, and the second adhesive layer 60 is used to respectively connect the side of the extension portion 22 facing the first binding portion 12 and the side of the first binding portion 12 facing the extension portion 22. Such a configuration, on the one hand, can reduce the area occupied by the flexible circuit board 20 and the first binding portion 12 on the backlight side of the display portion 11, and reserve more space for the display module 1 to install electronic components and batteries and other components. The saved space can set the battery capacity to be larger, improve the battery life, and thus enable the display module 1 to provide a higher battery life without changing the overall volume. On the other hand, the flexible circuit board 20 is respectively bonded to the display portion 11 and the first binding portion 12 through the first adhesive layer 30 and the second adhesive layer 60, which can replace the role of the connecting portion in the related art and support and fix the display portion 11 and the first binding portion 12.

[0088] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0089] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0090] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0091] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0092] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numerals and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0093] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display module, characterized in that: include: The display panel comprises a display portion, a first binding portion and a bending portion, wherein the bending portion is connected to the display portion and the first binding portion respectively, the first binding portion is bent to the backlight side of the display portion through the bending portion, and an accommodation space is defined between the first binding portion and the display portion; A flexible circuit board is bound and connected to the first binding portion, and at least a portion of the flexible circuit board extends to the accommodating space.

2. The display module according to claim 1, characterized in that: The flexible circuit board includes a main body portion and an extension portion connected to each other, the main body portion is bound and connected to the first binding portion, and a partial structure of the extension portion extends to the accommodating space.

3. The display module according to claim 2, characterized in that: The main body portion includes a first layer and a second layer, the first layer includes a second binding portion; in the direction from the first binding portion to the display portion, the first layer, the second layer and the extension portion are stacked in sequence, the first binding portion is bound and connected to the second binding portion, and the extension portion is arranged on a side of the second layer away from the first layer.

4. The display module according to claim 3, characterized in that: A partial structure of the second binding portion is arranged on a side of the first binding portion away from the display portion.

5. The display module according to claim 3, characterized in that: The orthographic projection of the second layer on the display portion and the orthographic projection of the first binding portion on the display portion are alternately arranged, and the orthographic projection of the first layer on the display portion and the orthographic projection of the first binding portion on the display portion overlap.

6. The display module according to claim 3, characterized in that: The second layer defines a groove body, and the groove body is arranged to penetrate the second layer, and the orthographic projection of the second binding portion on the display portion at least partially overlaps with the orthographic projection of the groove body on the display portion.

7. The display module according to any one of claims 2 to 6, characterized in that: The device further includes a first adhesive layer, wherein the first adhesive layer respectively connects a side of the extending portion facing the display portion and a side of the display portion facing the extending portion.

8. The display module according to claim 7, characterized in that: A heat dissipation layer is defined on a side of the display portion facing the first binding portion, and a side of the extension portion facing the display portion is connected to the heat dissipation layer through the first adhesive layer.

9. The display module according to claim 8, characterized in that: A first buffer protection layer is further defined between the heat dissipation layer and the display portion.

10. The display module according to any one of claims 2 to 6, characterized in that: It also includes a second adhesive layer, which respectively connects a side of the extending portion facing the first binding portion and a side of the first binding portion facing the extending portion.

11. The display module according to claim 10, characterized in that: A second buffer protection layer is defined on a side of the first binding portion facing the display portion, and a side of the extension portion facing the first binding portion is connected to the second buffer protection layer through the second adhesive layer.

12. A display device, characterized in that: Comprising a display module as described in any one of claims 1-11.

13. A method for preparing a display module, used for preparing the display module according to any one of claims 1 to 11, characterized in that: include: A display panel is provided, the display panel comprising a display portion, a first binding portion and a bending portion, the first binding portion is bent to a backlight side of the display portion through the bending portion, and an accommodation space is defined between the first binding portion and the display portion; A flexible circuit board is provided, the flexible circuit board comprising a main body and an extension part; the main body comprises a first layer and a second layer, the first layer comprises a second binding part; in a direction from the first binding part to the display part, the first layer and the second layer are stacked in sequence; Bend the side of the extension away from the second layer and bond it to the second layer through a bonding block, so that the orthographic projection of the bent extension on the display portion is interlaced with the orthographic projection of the second binding portion on the display portion; Binding and connecting the second binding portion to a side of the first binding portion facing away from the display portion; The bonding block is removed so that the side of the extension away from the second layer is inserted into the accommodation space.

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