Display module and display device

Abstract

The utility model provides a display module and a display device, the display module comprises a display panel, a backlight module, a printed circuit board, a flexible circuit board and a double-sided tape, the backlight module is arranged on one side of the display panel; the printed circuit board is arranged on the side, away from the display panel, of the backlight module. One end of the flexible circuit board is connected with the display panel, and the other end of the flexible circuit board is connected with the printed circuit board; the double-sided tape is located between the flexible circuit board and the backlight module, the first surface of the double-sided tape is bonded with the side, away from the display panel, of the backlight module, and the second surface of the double-sided tape is bonded with the side, close to the backlight module, of the flexible circuit board; in the double-sided adhesive tape, the stripping force of the first surface close to one side of the printed circuit board is smaller than that of the first surface far away from one side of the printed circuit board, so that the flexible circuit board is easy to disassemble in the repair process, the repair efficiency is improved, the loss rate of a product is reduced, and the repair cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] Currently, if Figure 1 As shown, the display module 1 of the related technology includes a display panel 11, a backlight module 12, a printed circuit board 13, a flexible circuit board 14 and a double-sided tape 15. The backlight module 12 is arranged on one side of the display panel 11; the printed circuit board 13 is arranged on the side of the backlight module 12 away from the display panel 11; one end of the flexible circuit board 14 is connected to the display panel 11, and the other end of the flexible circuit board 14 is connected to the printed circuit board 13; the double-sided tape 15 is arranged on the side of the backlight module 12 away from the display panel 11, and the double-sided tape 15 is located between the flexible circuit board 14 and the backlight module 12, one side of the double-sided tape 15 is bonded to the backlight module 12, and the other side of the double-sided tape 15 is bonded to the flexible circuit board 14. The flexible circuit board 14 is fixed to the backlight module 12 by using the double-sided tape 15 to prevent the flexible circuit board 14 from bulging or shifting due to its own flexibility, thereby affecting the structural stability and display effect of the display module 1.

[0003] However, during the production process of display modules, some products may need to be repaired due to reasons such as unqualified inspection. During the repair, the flexible circuit board needs to be forcibly separated from the backlight module, which may cause problems such as tearing, wrinkling, and breaking of the flexible circuit board. These problems not only directly affect the function of the flexible circuit board, but may also cause the entire display module to be scrapped, resulting in a large loss of yield. At the same time, during the forced separation process, the double-sided tape has strong viscosity and is prone to leaving residual glue on the surface of the flexible circuit board and the backlight module. The presence of residual glue not only affects the flatness and contact effect during reassembly, but also requires manual cleaning, which increases the complexity and difficulty of the repair process. Utility Model Content

[0004] Embodiments of the present invention provide a display module and a display device to alleviate the deficiencies in the related art.

[0005] To achieve the above functions, the technical solutions provided by the embodiments of the present invention are as follows:

[0006] An embodiment of the present invention provides a display module, comprising:

[0007] Display panel;

[0008] A backlight module is provided on one side of the display panel;

[0009] A printed circuit board is provided on a side of the backlight module away from the display panel;

[0010] a flexible circuit board, one end of the flexible circuit board being connected to the display panel, and the other end of the flexible circuit board being connected to the printed circuit board;

[0011] a double-sided tape, provided on a side of the backlight module away from the display panel, the double-sided tape being located between the flexible circuit board and the backlight module, the double-sided tape comprising a first surface and a second surface opposite to each other, the first surface of the double-sided tape being bonded to the side of the backlight module away from the display panel, and the second surface of the double-sided tape being bonded to the side of the flexible circuit board close to the backlight module;

[0012] In the double-sided tape, the peeling force of the first surface on the side close to the printed circuit board is smaller than the peeling force of the first surface on the side away from the printed circuit board.

[0013] Optionally, in one embodiment, the double-sided tape includes:

[0014] The first part includes a first sub-surface and a second sub-surface opposite to each other, wherein the first sub-surface is bonded to the backlight module, and the second sub-surface is bonded to the flexible circuit board;

[0015] a second portion connected to the first portion, the second portion being disposed on a side of the first portion close to the printed circuit board, the second portion comprising a third sub-surface and a fourth sub-surface opposite to each other, the third sub-surface being bonded to the backlight module;

[0016] The first surface includes the first sub-surface and the third sub-surface, and the peeling force of the third sub-surface is smaller than the peeling force of the first sub-surface.

[0017] Optionally, in one embodiment, the area of ​​the third sub-surface is smaller than the area of ​​the first sub-surface.

[0018] Optionally, in one embodiment, the second surface includes the second sub-surface and the fourth sub-surface, and the fourth sub-surface is spaced apart from the flexible circuit board.

[0019] Optionally, in one embodiment, the second portion is spaced apart from the printed circuit board, and the distance between the second portion and the printed circuit board is greater than or equal to 1 mm and less than or equal to 5 mm.

[0020] Optionally, in one embodiment, the second portion includes a first sub-portion, a second sub-portion, and a third sub-portion that are stacked, the second sub-portion is connected to the first portion, the first sub-portion is provided on a side of the second sub-portion close to the flexible circuit board, and the third sub-portion is provided on a side of the second sub-portion close to the backlight module;

[0021] Among them, one side of the first sub-section is connected to the second sub-section, the other side of the first sub-section is spaced apart from the flexible circuit board, one side of the third sub-section is connected to the second sub-section, the other side of the third sub-section is connected to the backlight module, and the peeling force of the side of the third sub-section close to the backlight module is smaller than the peeling force of the first sub-surface.

[0022] Optionally, in one embodiment, the peeling force of the second sub-portion close to the third sub-portion is greater than the peeling force of the third sub-portion close to the backlight module.

[0023] Optionally, in one embodiment, an end of the first sub-surface close to the third sub-portion is spaced apart from the backlight module.

[0024] Optionally, in one embodiment, the double-sided tape is a stretch-reducing adhesive tape.

[0025] An embodiment of the present invention further provides a display device, which includes any of the display modules described above.

[0026] The beneficial effects of the embodiments of the utility model: The utility model provides a display module and a display device, which display module includes a display panel, a backlight module, a printed circuit board, a flexible circuit board and a double-sided tape, the backlight module is arranged on one side of the display panel; the printed circuit board is arranged on the side of the backlight module away from the display panel; one end of the flexible circuit board is connected to the display panel, and the other end of the flexible circuit board is connected to the printed circuit board; the double-sided tape is arranged on the side of the backlight module away from the display panel, and the double-sided tape is located between the flexible circuit board and the backlight module, the first surface of the double-sided tape is bonded to the side of the backlight module away from the display panel, and the second surface of the double-sided tape is bonded to the side of the flexible circuit board close to the backlight module; by setting the peeling force of the first surface close to the printed circuit board side in the double-sided tape to be smaller than the peeling force of the first surface away from the printed circuit board side, it is ensured that the flexible circuit board is easy to disassemble during the rework process, avoiding the damage of the flexible circuit board caused by forced pulling, improving the efficiency of rework and reducing the loss rate of the product, thereby reducing the cost of rework. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a structural diagram of a display module in the related art;

[0029] Figure 2 A schematic structural diagram of a display module provided by an embodiment of the present utility model;

[0030] Figure 3 The embodiment of the present invention provides Figure 2 Enlarged schematic diagram of M in the middle

[0031] Figure 4 A schematic structural diagram of a double-sided tape provided in an embodiment of the present utility model;

[0032] Figure 5 This is a schematic structural diagram of a display device provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that

[0034] The specific embodiments described herein are intended only to illustrate and explain the present invention and are not intended to limit the present invention. In the present invention, unless otherwise specified, directional terms such as "upper" and "lower" generally refer to the upper and lower parts of the device in actual use or operating mode, specifically the directions of the drawings in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. In addition, the terms "first" and "second" are used for descriptive purposes only. Features defined as "first" and "second" may explicitly or implicitly include one or more of the aforementioned features. In the description of the present invention, "multiple" means two or more, unless otherwise specified.

[0035] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; or communication between them; direct or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] The following disclosure provides many different embodiments for implementing various structures of the present invention. To simplify the disclosure of the present invention, the following descriptions are based on the components and configurations of specific examples. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0037] The present invention provides a display module and a display device. Detailed descriptions are provided below. It should be noted that the order in which the following embodiments are described does not limit the preferred order of the embodiments.

[0038] Please combine Figure 2 and Figure 3 ;in, Figure 2 A schematic structural diagram of a display module provided by an embodiment of the present utility model; Figure 3 The embodiment of the present invention provides Figure 2 Enlarged schematic diagram of point M in the middle.

[0039] In one embodiment, the display module 2 includes a display panel 21, a backlight module 22, a printed circuit board 23, a flexible circuit board 24 and a double-sided tape 25; the backlight module 22 is arranged on one side of the display panel 21, the printed circuit board 23 is arranged on the side of the backlight module 22 away from the display panel 21, one end of the flexible circuit board 24 is connected to the display panel 21, and the other end of the flexible circuit board 24 is connected to the printed circuit board 23, the double-sided tape 25 is arranged on the side of the backlight module 22 away from the display panel 21, and the double-sided tape 25 is located between the flexible circuit board 24 and the backlight module 22.

[0040] Specifically, the display panel 21 is arranged on the light-emitting side of the backlight module 22. The display panel 21 can be a liquid crystal display panel (LCD). The display panel 21 includes a first substrate 211 and a second substrate 212 arranged opposite to each other. The second substrate 212 is located on the side of the first substrate 211 away from the back panel. The first substrate 211 includes a binding end 2111 that is not covered by the second substrate 212; specifically, the first substrate 211 can be an array substrate, and the second substrate 212 can be a color film substrate. The second substrate 212 and the first substrate 211 form a step sub-area 210 on the side close to the flexible circuit board 24. The binding end 2111 is located in the step sub-area 210, and the binding end 2111 is connected to the flexible circuit board 24 in the step sub-area 210.

[0041] The printed circuit board 23 and the display panel 21 are spaced apart along the first direction X, and the flexible circuit board 24 and the display panel 21 are sequentially arranged along the second direction Y, wherein one end of the flexible circuit board 24 is connected to the binding end 2111, and the other end of the flexible circuit board 24 is bent from the binding end 2111 toward the direction close to the printed circuit board 23, and the other end of the flexible circuit board 24 is connected to the printed circuit board 23; wherein the first direction can be Figure 2 The X direction in the second direction can be Figure 2 In the Y direction, the first direction X and the second direction Y may be 90 degrees.

[0042] The double-sided tape 25 is arranged on the side of the backlight module 22 away from the display panel 21. The double-sided tape 25 is located between the flexible circuit board 24 and the backlight module 22, and the double-sided tape 25 is spaced apart from the printed circuit board 23. The double-sided tape 25 includes a first surface 25A and a second surface 25B opposite to each other. The first surface 25A of the double-sided tape 25 is bonded to the side of the backlight module 22 away from the display panel 21, and the second surface 25B of the double-sided tape 25 is bonded to the side of the flexible circuit board 24 close to the backlight module 22.

[0043] It can be understood that in this embodiment, the flexible circuit board 24 is bonded to the backlight module 22 by the double-sided tape 25, thereby improving the fixing effect of the flexible circuit board 24 and the backlight module 22, and avoiding the arching phenomenon of the unbound part of the flexible circuit board 24, improving the problem of bulging and abnormal noise at the position of the flexible circuit board 24, and thus improving the stability and service life of the product.

[0044] It should be noted that the backlight module is used to provide a light source for the display panel to ensure the visibility of the image on the display panel. The backlight module includes a light-emitting surface and a bottom surface that are relatively arranged. The light-emitting surface is located on the side of the backlight module close to the display panel and is responsible for emitting light; the bottom surface is located on the side of the backlight module away from the display panel, that is, located at the bottom of the backlight module, and is arranged opposite to the display panel. In this embodiment, "the side of the backlight module away from the display panel" specifically refers to the bottom surface of the backlight module.

[0045] Furthermore, in the double-sided tape 25 , the peeling force of the first surface 25A on the side close to the printed circuit board 23 is smaller than the peeling force of the first surface 25A on the side away from the printed circuit board 23 .

[0046] It is understandable that in the actual production process of the display module 2, about 5%-6% of the products need to be reworked. The double-sided tape 25 in the relevant design can easily cause the flexible circuit board 24 to tear, wrinkle or even be scrapped during rework. In this embodiment, by setting the peeling force of the first surface 25A on the side close to the printed circuit board 23 in the double-sided tape 25 to be smaller than the peeling force of the first surface 25A on the side away from the printed circuit board 23, when the flexible circuit board 24 is reworked, the double-sided tape 25 can preferentially fall off from the surface with smaller peeling force (close to the side of the printed circuit board 23), thereby making it easier to disassemble the flexible circuit board 24, avoiding the double-sided tape 25 causing irreversible physical damage to the flexible circuit board 24 or other film layers of the display module 2 during the pulling process (the process of disassembling the flexible circuit board 24), thereby reducing the risk of damage to the flexible circuit board 24 during rework.

[0047] In addition, during the rework operation of the related design, the double-sided tape 25 is likely to leave residual glue on the flexible circuit board 24 and the backlight module 22 when separated, which increases the labor cost and rework time for cleaning the residual glue; this embodiment is designed with different peeling forces, so that during the rework of the flexible circuit board 24, the force required to remove the double-sided tape 25 is smaller, and the double-sided tape 25 can be separated from the backlight module 22 more smoothly, thereby reducing the possibility of the double-sided tape 25 remaining on the surface of the backlight module 22; specifically, the smaller peeling force prevents the double-sided tape 25 from being forcibly stretched or torn, thereby avoiding the situation where part of the double-sided tape 25 remains on the flexible circuit board 24 and the backlight module 22, so that there is no need to spend a lot of time to clean up the tape residue when removing the flexible circuit board 24, thereby improving work efficiency and reducing labor costs.

[0048] Furthermore, the double-sided tape 25 can be a stretch-type adhesive tape, which releases the adhesive force by pulling its end, so that it can be easily peeled off from the adhesive surface; it can be understood that in this embodiment, the stretch-type adhesive tape is arranged between the backlight module 22 and the flexible circuit board 24, and the stretch-type adhesive tape is used to fix the flexible circuit board 24 to the backlight module 22. The bonding strength of the double-sided tape 25 can be reduced by stretching the tape, thereby making it easier and faster to disassemble the flexible circuit board 24, thereby facilitating the repair of the flexible circuit board 24.

[0049] Specifically, in this embodiment, the double-sided tape 25 can be a stretch-reducing adhesive tape, and in the double-sided tape 25, the peeling force of the first surface 25A on the side close to the printed circuit board 23 is set to be smaller than the peeling force of the first surface 25A on the side away from the printed circuit board 23. Therefore, when disassembling the flexible circuit board 24, since the peeling force of the first surface 25A on the side of the double-sided tape 25 close to the printed circuit board 23 is smaller, the force is released more gradually during disassembly, and local preferential detachment can be achieved, thereby ensuring a smooth transition of disassembly and preventing the flexible circuit board 24 and the backlight module 22 from being damaged due to sudden pulling force.

[0050] It should be noted that the technical solution provided in this embodiment is not only applicable to the repair of the flexible circuit board 24, but can also be applied to other occasions, such as the replacement or upgrade of the flexible circuit board 24, the maintenance of the flexible circuit board 24, the protection of the flexible circuit board 24 during transportation and storage (temporary disassembly and protection), and dynamic adjustment of the position of the flexible circuit board 24.

[0051] Please combine Figure 2 、 Figure 3 and Figure 4 ;in, Figure 4 This is a schematic structural diagram of the double-sided tape provided in an embodiment of the present utility model.

[0052] In one embodiment, the double-sided tape 25 includes a first part 251 and a second part 252 connected to each other, the first part 251 includes a first sub-surface 251A and a second sub-surface 251B relative to each other, the first sub-surface 251A is bonded to the backlight module 22, and the second sub-surface 251B is bonded to the flexible circuit board 24; the second part 252 is arranged on the side of the first part 251 close to the printed circuit board 23, the second part 252 includes a third sub-surface 252A and a fourth sub-surface 252B relative to each other, and the third sub-surface 252A is bonded to the backlight module 22; wherein, the first surface 25A includes the first sub-surface 251A and the third sub-surface 252A, and the peeling force of the third sub-surface 252A is smaller than the peeling force of the first sub-surface 251A.

[0053] Specifically, the peeling force of the first sub-surface 251A can be greater than or equal to 1200 gf / 25mm and less than or equal to 15000 gf / 25mm, and the peeling force of the third sub-surface 252A can be greater than or equal to 200 gf / 25mm and less than or equal to 5000 gf / 25mm; this embodiment does not impose any specific restrictions on this, and it is only necessary to satisfy that the peeling force of the third sub-surface 252A is less than the peeling force of the first sub-surface 251A.

[0054] It can be understood that in this embodiment, the double-sided tape 25 is provided with a first part 251 and a second part 252 with different peeling forces, and the peeling force of the third sub-surface 252A of the second part 252 arranged close to the printed circuit board 23 is weaker. Therefore, during the repair or disassembly of the flexible circuit board 24, the second part 252 is easier to be disassembled from the backlight module 22, thereby reducing the difficulty of disassembling the flexible circuit board 24.

[0055] Among them, by setting the third sub-surface 252A to be bonded to the backlight module 22, the peeling force of the third sub-surface 252A is smaller than the peeling force of the first sub-surface 251A, and the second part 252 is easier to be removed from the backlight module 22 than the first part 251, and the required pulling force is smaller, thereby reducing the stress on the flexible circuit board 24 during the disassembly process and avoiding the situation where part of the double-sided tape 25 remains on the backlight module 22.

[0056] Please continue to combine Figures 2 to 4 ; In one embodiment, the second surface 25B includes the second sub-surface 251B and the fourth sub-surface 252B, the fourth sub-surface 252B is spaced apart from the flexible circuit board 24, and the peeling force of the fourth sub-surface 252B is less than the peeling force of the second sub-surface 251B; wherein the peeling force of the second sub-surface 251B may be greater than or equal to 1200gf / 25mm and less than or equal to 15000gf / 25mm.

[0057] It can be understood that, in this embodiment, by setting the fourth sub-surface 252B to be spaced apart from the flexible circuit board 24, there is no direct bonding relationship between the second part 252 and the flexible circuit board 24, that is, the flexible circuit board 24 will not be directly affected by the adhesion of the fourth sub-surface 252B, thereby reducing the interference and stress of the double-sided tape 25 on the flexible circuit board 24 during the disassembly process of the flexible circuit board 24, thereby avoiding the risk of the flexible circuit board 24 being damaged during repair.

[0058] Furthermore, by setting the peeling force of the fourth sub-surface 252B to be smaller than the peeling force of the second sub-surface 251B, when the portion where the flexible circuit board 24 is located is pressed, the fourth sub-surface 252B will not affect the flexible circuit board 24 at the junction of the flexible circuit board 24 and the second portion 252.

[0059] Please continue to combine Figures 2 to 4; In one embodiment, the area of ​​the third sub-surface 252A is smaller than the area of ​​the first sub-surface 251A, and the area of ​​the fourth sub-surface 252B is smaller than the area of ​​the second sub-surface 251B; specifically, the area of ​​the first portion 251 projected onto the backlight module 22 is larger than the area of ​​the second portion 252 projected onto the backlight module 22.

[0060] It can be understood that the area of ​​the first sub-surface 251A is larger, which can enable the first part 251 to play a good fixing role. Even if the third sub-surface 252A is easy to peel off, it will not affect the stability of the entire structure, ensuring that the flexible circuit board 24 will not move or fall off easily during normal use, thereby improving the reliability of the display module 2; at the same time, the area of ​​the third sub-surface 252A is smaller, which can further reduce the pulling force when peeling off the second sub-surface 251B, thereby reducing the damage to the backlight module 22 during the repair process of the flexible circuit board 24.

[0061] In addition, if the second part 252 falls off or becomes partially loose, since the area of ​​the third sub-surface 252A is smaller (the contact surface of the second part 252 and the backlight module 22 is smaller), the vibration and friction sound generated between the second part 252 and the backlight module 22 will be significantly reduced. In actual use, this can effectively avoid abnormal noise caused by the loosening or falling off of the second part 252, especially in the relatively closed environment within the display module 2, the probability of abnormal noise occurring will be further reduced.

[0062] Please continue to combine Figures 2 to 4 ; In one embodiment, the peeling force of the fourth sub-surface 252B can be 0; it can be understood that by setting the peeling force of the fourth sub-surface 252B to 0, it can be ensured that there is no bonding relationship between the fourth sub-surface 252B and the flexible circuit board 24, and bonding occurs between the fourth sub-surface 252B and the flexible circuit board 24, thereby avoiding the flexible circuit board 24 being forcibly peeled off from the fourth sub-surface 252B and causing physical damage such as tearing and wrinkling.

[0063] During the repair process of the flexible circuit board 24, since the fourth sub-surface 252B is non-sticky, the disassembly process of the flexible circuit board 24 is simplified, the obstruction caused by the adhesion between the flexible circuit board 24 and the double-sided tape 25 is reduced, and the work efficiency is improved; and the problem of residual adhesive is also avoided.

[0064] Please continue to combine Figure 2 、 Figure 3 and Figure 4In one embodiment, the second portion 252 is spaced apart from the printed circuit board 23, and the distance between the second portion 252 and the printed circuit board 23 is greater than or equal to 1 mm and less than or equal to 5 mm. It can be understood that direct or close contact of the double-sided tape 25 with the printed circuit board 23 may interfere with the removal of the double-sided tape 25. When the flexible circuit board 24 is reworked, this embodiment provides sufficient operating space by spacing the second portion 252 from the printed circuit board 23, which facilitates maintenance personnel to disassemble the flexible circuit board 24 and the double-sided tape 25, thereby improving rework efficiency.

[0065] At the same time, the second part 252 is spaced apart from the printed circuit board 23, which can also prevent maintenance personnel from accidentally damaging the printed circuit board 23 during the operation process (the process of removing the flexible circuit board 24), thereby reducing the risk of rework; in addition, since an isolation space of 1 mm to 5 mm is designed between the second part 252 and the printed circuit board 23, there is no contact between the double-sided tape 25 and the printed circuit board 23, which can avoid the double-sided tape 25 from having an adverse effect on the printed circuit board 23 due to heat dissipation or expansion, thereby enhancing the structural stability of the display module 2.

[0066] Please continue to combine Figure 2 、 Figure 3 and Figure 4 In one embodiment, the second portion 252 includes a first sub-portion 2521, a second sub-portion 2522 and a third sub-portion 2523 which are stacked, the second sub-portion 2522 is connected to the first portion 251, the first sub-portion 2521 is provided on a side of the second sub-portion 2522 close to the flexible circuit board 24, and the third sub-portion 2523 is provided on a side of the second sub-portion 2522 close to the backlight module 22; wherein, one side of the first sub-portion 2521 is connected to the second sub-portion 2522, the other side of the first sub-portion 2521 is spaced apart from the flexible circuit board 24, one side of the third sub-portion 2523 is connected to the second sub-portion 2522, the other side of the third sub-portion 2523 is connected to the backlight module 22, and the peeling force of the side of the third sub-portion 2523 close to the backlight module 22 is smaller than the peeling force of the first sub-surface 251A.

[0067] Specifically, the second part 252 includes three sub-parts arranged in a stacked manner, namely, the first sub-part 2521, the second sub-part 2522 and the third sub-part 2523. The second sub-part 2522 is connected to the first part 251. The side of the second sub-part 2522 close to the flexible circuit board 24 is flush with the side of the first part 251 close to the flexible circuit board 24. The side of the second sub-part 2522 close to the backlight module 22 is flush with the side of the first part 251 close to the backlight module 22. The second sub-part 2522 and the first part 251 can be integrally formed to form a seamless overall structure, avoiding misalignment or looseness between different components, enhancing the overall stability of the double-sided tape 25, and the second sub-part 2522 plays a structural support role, which can ensure the structural strength of the second part 252.

[0068] The first sub-portion 2521 is arranged close to the flexible circuit board 24, and the first sub-portion 2521 is not in direct contact with the flexible circuit board 24, so that the flexible circuit board 24 will not be affected by the adhesion of the first sub-portion 2521 during disassembly, effectively reducing the interference of the first sub-portion 2521 on the flexible circuit board 24 during the disassembly process, preventing unnecessary tearing or damage, improving the success rate of rework, and alleviating the requirements for rework operators, thereby reducing labor costs; further, the peeling force of the first sub-portion 2521 close to the flexible circuit board 24 can be 0, so that the flexible circuit board 24 does not need to overcome any adhesion force on the first sub-portion 2521 during disassembly, greatly reducing the difficulty and risk of disassembly.

[0069] The third sub-section 2523 is arranged close to the backlight module 22, and the third sub-section 2523 is bonded to the backlight module 22; wherein, the peeling force of the third sub-section 2523 close to the backlight module 22 is smaller than the peeling force of the first sub-surface 251A, thereby making it easier for the third sub-section 2523 to be peeled off from the backlight module 22, especially during rework or maintenance, which can reduce the difficulty of bonding the backlight module 22 and the double-sided tape 25.

[0070] Please continue to combine Figure 2 、 Figure 3 and Figure 4 In one embodiment, the peeling force of the second sub-portion 2522 close to the third sub-portion 2523 is greater than the peeling force of the third sub-portion 2523 close to the backlight module 22 .

[0071] It can be understood that in this embodiment, the third sub-section 2523 close to the backlight module 22 has a smaller peeling force, while the peeling force of the second sub-section 2522 close to the third sub-section 2523 is larger. Therefore, by adjusting the peeling force difference between the second sub-section 2522 and the third sub-section 2523, it is ensured that when the flexible circuit board 24 is repaired, the third sub-section 2523 is easily separated from the backlight module 22, and at the same time, there will be no separation or falling off between the third sub-section 2523 and the second sub-section 2522, thereby ensuring the stability of the second structure.

[0072] Please continue to combine Figure 2 、 Figure 3 and Figure 4 In one embodiment, one end of the first sub-surface 251A close to the third sub-portion 2523 is spaced apart from the backlight module 22 .

[0073] Since the second part 252 includes three stacked sub-parts, there is a height difference between the first part 251 and the second part 252 (i.e., the thickness of the third sub-part 2523). Therefore, when the first part 251 is attached to the backlight module 22, the flexible first part 251 is bent on one side close to the third sub-part 2523 to form a bending part 2511, and the bending part 2511 is spaced apart from the backlight module 22.

[0074] It can be understood that the presence of the bending portion 2511 reduces the contact area between the first part 251 and the backlight module 22, thereby reducing the peeling force of the first part 251, so that when disassembly is required, the first part 251 is easier to separate from the backlight module 22, reducing the risk of damage to the flexible circuit board 24 during the disassembly process.

[0075] See also Figure 5 , is a structural schematic diagram of a display device provided by an embodiment of the present utility model.

[0076] This embodiment further provides a display device 3 , which includes the display module 2 described in any one of the above embodiments.

[0077] It is understandable that the display module 2 has been described in detail in the above embodiment and will not be repeated here.

[0078] The display device 3 may further include a housing 3A, which is integrated with the display module 2 to provide support, fixation and protection for the display module 2 .

[0079] In specific applications, the display device 3 can be at least one of devices with display function, such as a smart phone, a tablet computer, a mobile phone, a video phone, an e-book reader, a desktop computer, a laptop, a netbook, a workstation, a server, a personal digital assistant, a portable media player, an MP3 player, a mobile medical machine, a camera, a game console, a digital camera, a car navigation system, an electronic billboard, an ATM or a wearable device.

[0080] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] The above is a detailed introduction to a display module and a display device provided by an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A display module, characterized in that: include: Display panel; A backlight module is provided on one side of the display panel; A printed circuit board is provided on a side of the backlight module away from the display panel; a flexible circuit board, one end of the flexible circuit board being connected to the display panel, and the other end of the flexible circuit board being connected to the printed circuit board; a double-sided tape, provided on a side of the backlight module away from the display panel, the double-sided tape being located between the flexible circuit board and the backlight module, the double-sided tape comprising a first surface and a second surface opposite to each other, the first surface of the double-sided tape being bonded to the side of the backlight module away from the display panel, and the second surface of the double-sided tape being bonded to the side of the flexible circuit board close to the backlight module; In the double-sided tape, the peeling force of the first surface on the side close to the printed circuit board is smaller than the peeling force of the first surface on the side away from the printed circuit board.

2. The display module according to claim 1, wherein: The double-sided tape comprises: The first part includes a first sub-surface and a second sub-surface opposite to each other, wherein the first sub-surface is bonded to the backlight module, and the second sub-surface is bonded to the flexible circuit board; a second portion connected to the first portion, the second portion being disposed on a side of the first portion close to the printed circuit board, the second portion comprising a third sub-surface and a fourth sub-surface opposite to each other, the third sub-surface being bonded to the backlight module; The first surface includes the first sub-surface and the third sub-surface, and the peeling force of the third sub-surface is smaller than the peeling force of the first sub-surface.

3. The display module according to claim 2, wherein: An area of ​​the third sub-surface is smaller than an area of ​​the first sub-surface.

4. The display module according to claim 2, wherein: The second surface includes the second sub-surface and the fourth sub-surface, and the fourth sub-surface is spaced apart from the flexible circuit board.

5. The display module according to claim 2, wherein: The second portion is spaced apart from the printed circuit board, and the distance between the second portion and the printed circuit board is greater than or equal to 1 mm and less than or equal to 5 mm.

6. The display module according to any one of claims 2 to 5, characterized in that: The second portion includes a first sub-portion, a second sub-portion, and a third sub-portion that are stacked, the second sub-portion being connected to the first portion, the first sub-portion being located on a side of the second sub-portion close to the flexible circuit board, and the third sub-portion being located on a side of the second sub-portion close to the backlight module; Among them, one side of the first sub-section is connected to the second sub-section, the other side of the first sub-section is spaced apart from the flexible circuit board, one side of the third sub-section is connected to the second sub-section, the other side of the third sub-section is connected to the backlight module, and the peeling force of the side of the third sub-section close to the backlight module is smaller than the peeling force of the first sub-surface.

7. The display module according to claim 6, wherein: The peeling force of the second sub-portion close to the third sub-portion is greater than the peeling force of the third sub-portion close to the backlight module.

8. The display module according to claim 6, wherein: An end of the first sub-surface close to the third sub-portion is spaced apart from the backlight module.

9. The display module according to claim 1, wherein: The double-sided tape is a stretch-reducing adhesive tape.

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

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