Display module

Abstract

The application provides a display module, which comprises a display screen, a support plate and a fixed reinforcing structure, the support plate is located at the back side of the display screen, the display screen has a display area and a binding area, the binding area is located at the periphery of the display area, the display screen comprises a plurality of circuit devices located at the binding area, the binding area of the display screen is bent to the back side of the support plate away from the display screen, the fixed reinforcing structure is located between the support plate and the binding area, the fixed reinforcing structure comprises a first adhesive layer, a reinforcing layer and a second adhesive layer, the first adhesive layer, the reinforcing layer and the second adhesive layer are sequentially stacked, the first adhesive layer is pasted with the support plate, the second adhesive layer is pasted with the display screen, and the reinforcing layer overlaps with the orthographic projection of at least part of the circuit devices on the support plate. The weight of the display module is greatly reduced, the user carries and uses the display module more conveniently, and the user experience is improved.

Description

Technical Field

[0001] This invention belongs to the field of display technology, and specifically relates to a display module. Background Technology

[0002] With the popularization of OLED (Organic Light-Emitting Diode) display technology, foldable products have gradually become the mainstream flagship models of major mobile phone manufacturers. By folding, the screen can be made larger and more convenient for users to carry. Foldable products greatly improve the user experience.

[0003] However, foldable products also have drawbacks, namely, they are heavier than regular candybar phones. Mobile phones have become an indispensable part of people's lives, and people now carry them with them at all times. The increased weight of mobile phones can cause inconvenience for users. How to reduce the weight of foldable products (such as foldable phones) to make them easier to carry and improve the user experience is a problem that urgently needs to be solved. Summary of the Invention

[0004] This invention addresses the problem of poor user experience caused by the heavy weight of foldable display products by providing a display module. The weight of this display module is significantly reduced, making it more convenient for users to carry and use, thus improving the user experience.

[0005] This invention provides a display module, including a display screen, a support plate, and a fixing and reinforcing structure.

[0006] The support plate is located on the back side of the display screen.

[0007] The display screen has a display area and a binding area, with the binding area located around the periphery of the display area.

[0008] The display screen includes multiple circuit components located in the bonding area.

[0009] The bonding area of ​​the display screen is bent to the back side of the support plate opposite to the display screen.

[0010] The fixing and reinforcing structure is located between the support plate and the bonding area. The fixing and reinforcing structure includes a first adhesive layer, a reinforcing layer, and a second adhesive layer, which are stacked sequentially. The first adhesive layer is bonded to the support plate, and the second adhesive layer is bonded to the display screen.

[0011] The reinforcing layer overlaps with the orthographic projection of at least a portion of the circuit devices on the support plate.

[0012] In some embodiments, the circuit traces within the display area extend to the bonding area, and at least a portion of the circuit traces are electrically connected to the circuit device.

[0013] The reinforcing layer also overlaps with the orthographic projection of at least a portion of the circuit traces within the bonding area onto the support plate.

[0014] In some embodiments, the display screen further includes bonding lines located in the bonding area, the bonding lines being bonded to a printed circuit board.

[0015] The bonding line includes a bonding port and a bonding trace, wherein the bonding port is electrically connected to the bonding trace, and the bonding trace is electrically connected to the circuit device and the circuit trace.

[0016] The reinforcing layer also overlaps with the bonding port and at least a portion of the bonding traces on the support plate.

[0017] In some embodiments, the reinforcing layer coincides with the orthographic projection of the plurality of circuit devices on the support plate.

[0018] In some embodiments, the reinforcing layer coincides with the orthographic projection of the plurality of circuit devices and all the circuit traces within the bonding area onto the support plate.

[0019] In some embodiments, the reinforcing layer coincides with the orthographic projection of the plurality of circuit devices and the power and ground lines in the circuit traces onto the support plate.

[0020] In some embodiments, the reinforcing layer coincides with the orthographic projection of the plurality of circuit devices, all the circuit traces within the bonding area, the bonding port, and all the bonding traces on the support plate.

[0021] In some embodiments, the first adhesive layer and the second adhesive layer coincide with the orthographic projection of the bonding area on the support plate.

[0022] In some embodiments, the orthographic projections of the first adhesive layer and the second adhesive layer on the support plate fall into the orthographic projection area of ​​the bonding area on the support plate, and the orthographic projection areas of the first adhesive layer and the second adhesive layer on the support plate are smaller than the orthographic projection area of ​​the bonding area on the support plate.

[0023] The orthographic projection of the reinforcing layer on the support plate falls within the orthographic projection area of ​​the first adhesive layer and the second adhesive layer on the support plate, and the orthographic projection area of ​​the reinforcing layer on the support plate is smaller than the orthographic projection area of ​​the first adhesive layer and the second adhesive layer on the support plate.

[0024] In some embodiments, the orthographic projections of the first adhesive layer and the second adhesive layer on the support plate fall within the orthographic projection area of ​​the reinforcing layer on the support plate, and the orthographic projection areas of the first adhesive layer and the second adhesive layer on the support plate are smaller than the orthographic projection area of ​​the reinforcing layer on the support plate.

[0025] In some embodiments, the first adhesive layer and the second adhesive layer coincide with the orthographic projection of the reinforcing layer onto the support plate.

[0026] In some embodiments, the fixing reinforcement structure further includes a flexible layer located between the first adhesive layer and the second adhesive layer.

[0027] The orthographic projections of the flexible layer and the reinforcing layer onto the first adhesive layer do not overlap, and the orthographic projection patterns of the flexible layer and the reinforcing layer onto the first adhesive layer are complementary.

[0028] The density of the flexible layer is less than the density of the reinforcing layer.

[0029] In some embodiments, the orthographic projection shapes of the first adhesive layer and the second adhesive layer on the support plate include any one of the following shapes: rectangle, triangle, cross, I-shape, T-shape, arc shape, and stripe shape.

[0030] Alternatively, the edge shapes of the orthographic projection patterns of the first and second adhesive layers on the support plate may include wavy or serrated shapes.

[0031] In some embodiments, the orthographic projection shape of the reinforcing layer on the support plate includes any one of the following shapes: rectangle, triangle, cross, I-shape, T-shape, arc shape, and stripe shape.

[0032] Alternatively, the edge shape of the orthographic projection of the reinforcing layer on the support plate may include a wavy or serrated shape.

[0033] In some embodiments, the support plate and the reinforcing layer are made of steel plate or titanium alloy.

[0034] The support plate is grounded.

[0035] The first adhesive layer is made of a conductive pressure-sensitive adhesive material, and the second adhesive layer is made of a pressure-sensitive adhesive material.

[0036] The flexible layer is made of polyester material.

[0037] The beneficial effects of the present invention are as follows: The display module provided by the present invention, by having the reinforcing layer overlap with the orthographic projection of at least some circuit components in the bonding area onto the support plate, on the one hand, the reinforcing layer can reinforce at least some circuit components in the bonding area, thereby preventing at least some circuit components from breaking or fractured during the bending of the display screen; on the other hand, compared with the related technology where the reinforcing plate is set on the entire surface to reinforce the bonding area, the area of ​​the reinforcing layer in this embodiment is greatly reduced. While the material and thickness of the reinforcing layer remain unchanged compared with the reinforcing plate in the related technology, the weight of the reinforcing layer is greatly reduced compared with the reinforcing plate in the related technology, thereby greatly reducing the weight of the fixed reinforcing structure compared with the adhesive structure in the related technology, and thus greatly reducing the weight of the display module. This makes it more convenient for users to carry and use the display module, improving the user experience. Attached Figure Description

[0038] Figure 1a This is a schematic diagram of the stacking structure of foldable display products in related technologies.

[0039] Figure 1b This is a cross-sectional schematic diagram of the film layer structure in the display bonding area of ​​a related technology;

[0040] Figure 1c This is a top view of the pasting structure in the related technology;

[0041] Figure 1d For along Figure 1c A structural cross-sectional view of the AA' section line;

[0042] Figure 2a This is a schematic diagram of the stacked structure of the display module in an embodiment of the present invention;

[0043] Figure 2b This is a top view of the back of the display module when the display screen bonding area is bent to the back of the support plate in an embodiment of the present invention;

[0044] Figure 2c This is a top view of the back of the display module when the display screen binding area is not bent to the back of the support plate in an embodiment of the present invention;

[0045] Figure 2d This is a top view schematic diagram of a fixed reinforcement structure according to an embodiment of the present invention;

[0046] Figure 2e For along Figure 2d A structural cross-sectional view of the BB' section line;

[0047] Figure 3a This is a top view schematic diagram of another fixed reinforcement structure in an embodiment of the present invention;

[0048] Figure 3b For along Figure 3a A structural cross-sectional view of the CC' section line;

[0049] Figure 4a This is a top view schematic diagram of another fixed reinforcement structure in an embodiment of the present invention;

[0050] Figure 4b For along Figure 4a A structural cross-sectional view of the DD' section line;

[0051] Figure 5a This is a top view schematic diagram of another fixed reinforcement structure in an embodiment of the present invention;

[0052] Figure 5b For along Figure 5a A structural cross-sectional view of the EE' section line.

[0053] The reference numerals in the attached figures are:

[0054] 1. Display screen; 101. Display area; 102. Bonding area; 10. Circuit components; 11. Bonding port; 2. Support plate; 3. Fixing and reinforcing structure; 30. Reinforcing layer; 31. First adhesive layer; 32. Second adhesive layer; 33. Flexible layer; 4. Back film; 5. Polarizing film; 6. Optical adhesive layer; 7. Protective cover plate; 8. Printed circuit board; 9. Adhesive structure; 90. Reinforcing plate; 91. First adhesive layer; 92. Second adhesive layer; 12. Flexible film layer; 13. Driver chip. Detailed Implementation

[0055] To enable those skilled in the art to better understand the technical solution of the present invention, a display module of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0056] like Figure 1a The diagram shows a stacked structure of a foldable display product in the related technology. The foldable display product includes a support plate 2, a back film 4, a display screen 1, a polarizer 5, an optical adhesive layer 6, and a protective cover plate 7. The back film 4, display screen 1, polarizer 5, optical adhesive layer 6, and protective cover plate 7 are stacked sequentially on one side of the support plate 2. The display screen 1 includes a bonding area 102 located on one side of the display area 101. The bonding area 102 is bent to the back side of the support plate 2 away from the display screen 1 and is attached to the back side of the support plate 2 by an adhesive structure 9, thereby fixing the bonding area 102 of the display screen 1 bent to its back side by the support plate 2.

[0057] like Figure 1bThe diagram shows a cross-sectional view of the film layer structure in the bonding area of ​​a display screen in the related art. The bonding area 102 of the display screen 1 includes multiple flexible film layers 12 (such as a substrate, a first planarization layer, a second planarization layer, a pixel defining layer, etc.) stacked sequentially, a driver chip 13, and circuit traces (not shown in the diagram). The circuit traces extend from the display area 101 to the bonding area 102, and at least a portion of the circuit traces are electrically connected to the driver chip 13. The driver chip 13 is located on the display side of the display screen 1, and the circuit traces are located between adjacent flexible film layers 12.

[0058] During the bending process, the display screen 1 may experience misalignment and deformation. The driver chip 13 and some circuit traces are relatively fragile and prone to breakage and fracture. Therefore, the driver chip 13 and some circuit traces need to be reinforced with stiffness to protect them. Thus, a rigid reinforcing plate needs to be added to the bonding structure below the bonding area 102 to provide reinforcement.

[0059] like Figure 1c The image shown is a top view of a pasting structure in related technologies; as shown... Figure 1d As shown, along Figure 1c The cross-sectional view of the structure along the AA' section line shows that the adhesive structure 9 includes a first adhesive layer 91, a second adhesive layer 92, and a reinforcing plate 90. The first adhesive layer 91, the reinforcing plate 90, and the second adhesive layer 92 are stacked sequentially. The first adhesive layer 91 contacts and is adhered to the support plate 2, and the second adhesive layer 92 contacts and is adhered to the display screen 1. The reinforcing plate 90 reinforces the bonding area 102 of the display screen 1 bent to the back side of the support plate 2. In related technologies, the orthographic projections of the reinforcing plate 90, the first adhesive layer 91, and the second adhesive layer 92 on the support plate 2 coincide, and the orthographic projections of the reinforcing plate 90 and the bonding area 102 of the display screen 1 bent to the back side of the support plate 2 also coincide, meaning that the reinforcing plate 90 provides full-area reinforcement to the bonding area 102.

[0060] Since the reinforcing plate 90 is generally made of a high-density metal material, the reinforcing plate 90 installed on the entire surface makes the adhesive structure 9 heavy, which in turn makes the entire foldable display product heavy, resulting in a poor user experience when carrying and using it.

[0061] To address the issue of the heavy weight of foldable display products leading to a poor user experience, this invention provides a display module, such as... Figure 2a , Figure 2b , Figure 2c , Figure 2d and Figure 2eAs shown, the display module includes a display screen 1, a support plate 2, and a fixing and reinforcing structure 3. The support plate 2 is located on the back side of the display screen 1. The display screen 1 has a display area 101 and a bonding area 102. The bonding area 102 is located on the periphery of the display area 101. The display screen 1 includes multiple circuit devices 10 located in the bonding area 102. The bonding area 102 of the display screen 1 is bent to the side of the support plate 2 away from the back side of the display screen 1. The fixing and reinforcing structure 3 is located between the support plate 2 and the bonding area 102. The fixing and reinforcing structure 3 includes a first adhesive layer 31, a reinforcing layer 30, and a second adhesive layer 32. The first adhesive layer 31, the reinforcing layer 30, and the second adhesive layer 32 are stacked sequentially. The first adhesive layer 31 is pasted to the support plate 2, and the second adhesive layer 32 is pasted to the display screen 1. The reinforcing layer 30 overlaps with the orthographic projection of at least some of the circuit devices 10 on the support plate 2.

[0062] The display module also includes a back film 4, a polarizer 5, an optical adhesive layer 6, and a protective cover plate 7. The back film 4 is located between the display screen 1 and the support plate 2, and is positioned on the back side of the display area 101 of the display screen 1. The polarizer 5, the optical adhesive layer 6, and the protective cover plate 7 are stacked sequentially on the display side of the display screen 1. The display screen 1 is a flexible display screen, such as an OLED (Organic Light-Emitting Diode) display screen. Circuit devices 10, such as driver chips, are disposed in the bonding area 102.

[0063] In this embodiment, by overlapping the orthographic projection of the reinforcing layer 30 with the at least part of the circuit components 10 in the bonding area 102 onto the support plate 2, the reinforcing layer 30 can reinforce the at least part of the circuit components 10 in the bonding area 102, thereby preventing the at least part of the circuit components 10 from breaking or fractured during the bending of the display screen 1. On the other hand, compared with the scheme of setting the reinforcing plate on the entire surface in the related technology to reinforce the bonding area 102, the area of ​​the reinforcing layer 30 in this embodiment is greatly reduced. With the material and thickness of the reinforcing layer 30 remaining unchanged compared with the reinforcing plate in the related technology, the weight of the reinforcing layer 30 is greatly reduced compared with the reinforcing plate in the related technology. This greatly reduces the weight of the fixed reinforcing structure 3 compared with the adhesive structure in the related technology, thereby greatly reducing the weight of the display module. This makes it more convenient for users to carry and use the display module, improving the user experience.

[0064] In some embodiments, the circuit traces in the display area 101 extend to the bonding area 102, and at least a portion of the circuit traces are electrically connected to the circuit device 10. The reinforcing layer 30 also overlaps with the orthographic projection of at least a portion of the circuit traces (not shown in the figure) in the bonding area 102 onto the support plate 2. This configuration, on the one hand, based on the above embodiments, allows the reinforcing layer 30 to reinforce at least a portion of the circuit traces in the bonding area 102, thereby preventing breakage of at least a portion of the circuit traces during bending of the display screen 1. On the other hand, compared to the related art where the reinforcing plate covers the entire surface, forming a full-surface reinforcement of the bonding area 102, the reinforcing layer 30 in this embodiment has a smaller area. With the material and thickness of the reinforcing layer 30 remaining unchanged compared to the reinforcing plate in the related art, the weight of the reinforcing layer 30 is reduced compared to the reinforcing plate in the related art. This reduces the weight of the fixing and reinforcing structure 3 compared to the adhesive structure in the related art, thereby reducing the weight of the display module. This makes it more convenient for users to carry and use the display module, improving the user experience.

[0065] In some embodiments, the display screen 1 further includes a bonding line located in the bonding area 102. The bonding line is bonded to the printed circuit board 8. The bonding line includes a bonding port 11 and a bonding trace (not shown in the figure). The bonding port 11 is electrically connected to the bonding trace, and the bonding trace is electrically connected to the circuit device 10 and the circuit trace. The reinforcing layer 30 also overlaps with the orthographic projection of the bonding port 11 and at least part of the bonding trace on the support plate 2. With this configuration, on the one hand, based on the above embodiments, the reinforcing layer 30 can further reinforce the binding port 11 and at least part of the binding traces within the binding area 102, thereby preventing the binding port 11 and at least part of the binding traces from breaking during the bending of the display screen 1. On the other hand, compared to the scheme in the related art where the reinforcing plate is set across the entire surface to reinforce the binding area 102, the area of ​​the reinforcing layer 30 in this embodiment is smaller. With the material and thickness of the reinforcing layer 30 remaining unchanged compared to the reinforcing plate in the related art, the weight of the reinforcing layer 30 is reduced compared to the reinforcing plate in the related art, thereby reducing the weight of the fixed reinforcing structure 3 compared to the adhesive structure in the related art, and thus reducing the weight of the display module. This makes it more convenient for users to carry and use the display module, improving the user experience.

[0066] In some embodiments, the reinforcing layer 30 coincides with the orthographic projection of the plurality of circuit devices 10 onto the support plate 2. This configuration allows the reinforcing layer 30 to reinforce all circuit devices 10 within the bonding area 102, thereby preventing all circuit devices 10 from breaking or fractured during the bending of the display screen 1.

[0067] In some embodiments, the reinforcing layer 30 coincides with the orthographic projection of the plurality of circuit devices 10 and all circuit traces (not shown) within the bonding area 102 onto the support plate 2. This configuration allows the reinforcing layer 30 to reinforce all circuit traces within the bonding area 102, thereby preventing breakage of all circuit traces during bending of the display screen 1.

[0068] In some embodiments, the reinforcing layer 30 coincides with the orthographic projection of the plurality of circuit devices 10 and the power lines and ground lines (not shown in the figure) in the circuit traces on the support plate 2. Since the power lines and ground lines in the circuit traces within the bonding area 102 are relatively wide, they are prone to local breakage or fracture during the bending, shifting, and deformation of the display screen 1. Therefore, this arrangement allows the reinforcing layer 30 to reinforce all the circuit devices 10 and the power lines and ground lines in the circuit traces within the bonding area 102, thereby preventing local breakage or fracture of all the circuit devices 10 and the power lines and ground lines in the circuit traces within the bonding area 102 during the bending of the display screen 1.

[0069] In some embodiments, the reinforcing layer 30 coincides with the orthographic projection of the plurality of circuit devices 10, all circuit traces within the bonding area 102, bonding ports 11, and all bonding traces onto the support plate 2. This configuration allows the reinforcing layer 30 to reinforce all circuit devices 10, all circuit traces, bonding ports 11, and all bonding traces within the bonding area 102, thereby preventing localized breakage or fracture of these components during bending of the display screen 1.

[0070] In some embodiments, such as Figure 2d As shown, the first adhesive layer 31 and the second adhesive layer 32 coincide with the orthographic projection of the bonding area 102 on the support plate 2.

[0071] In some embodiments, such as Figure 2d As shown, the depth h1 of the reinforcing layer 30 is less than or equal to one-third of the thickness of the fixed reinforcing structure 3. With this setting, the fixed reinforcing structure 3 can also form a relatively stable fixation for the entire display screen 1 binding area 102 bent to the back side of the support plate 2, and can also reduce the weight at the same time.

[0072] In some embodiments, the fixed reinforcement structure 3 further includes a flexible layer 33 located between the first adhesive layer 31 and the second adhesive layer 32. The orthographic projections of the flexible layer 33 and the reinforcement layer 30 on the first adhesive layer 31 do not overlap, and the orthographic projection patterns of the flexible layer 33 and the reinforcement layer 30 on the first adhesive layer 31 are complementary. The density of the flexible layer 33 is less than the density of the reinforcement layer 30.

[0073] The flexible layer 33 is disposed in the area outside the reinforcing layer 30 between the first adhesive layer 31 and the second adhesive layer 32. Since the first adhesive layer 31 and the second adhesive layer 32 coincide with the orthographic projection of the bonding area 102 on the support plate 2, the fixing and reinforcing structure 3 can fix the entire bonding area 102 of the display screen 1 bent to the back side of the support plate 2, thereby making the structure of the entire display module more stable and robust. At the same time, since the density of the flexible layer 33 is less than that of the reinforcing layer 30, compared with the scheme of the reinforcing plate covering the entire surface in the related technology, while the material and thickness of the reinforcing layer 30 remain unchanged compared with the reinforcing plate in the related technology, the overall weight of the reinforcing layer 30 and the flexible layer 33 is significantly reduced compared with the weight of the reinforcing plate in the related technology. This greatly reduces the weight of the fixing and reinforcing structure 3 compared with the adhesive structure in the related technology, and thus greatly reduces the weight of the display module, making it more convenient for users to carry and use the display module, and improving the user experience.

[0074] In some embodiments, such as Figure 3a and Figure 3b As shown, the orthographic projections of the first adhesive layer 31 and the second adhesive layer 32 on the support plate 1 fall within the orthographic projection area of ​​the bonding area 102 on the support plate 2, and the orthographic projection area of ​​the first adhesive layer 31 and the second adhesive layer 32 on the support plate 2 is smaller than the orthographic projection area of ​​the bonding area 102 on the support plate 2; the orthographic projection of the reinforcing layer 30 on the support plate 2 falls within the orthographic projection area of ​​the first adhesive layer 31 and the second adhesive layer 32 on the support plate 2, and the orthographic projection area of ​​the reinforcing layer 30 on the support plate 2 is smaller than the orthographic projection area of ​​the first adhesive layer 31 and the second adhesive layer 32 on the support plate 2.

[0075] In this embodiment, the flexible layer 33 can still be provided in the area outside the reinforcing layer 30 between the first adhesive layer 31 and the second adhesive layer 32. On the one hand, the fixed reinforcing structure 3 can also effectively fix the display screen 1 binding area 102 bent to the back of the support plate 2, thus making the entire display module structure more stable and robust. On the other hand, since the areas of the first adhesive layer 31 and the second adhesive layer 32 are smaller than those of the first adhesive layer and the second adhesive layer in related technologies, the weight of the first adhesive layer 31 and the second adhesive layer 32 is significantly reduced in this embodiment, assuming all four materials and thicknesses are the same. Furthermore, the density of the flexible layer 33 is less than that of the reinforcing layer 30, so the overall weight of the fixed reinforcing structure 3 in this embodiment is further reduced compared to the adhesive structure in related technologies, thereby further reducing the weight of the display module and making it more convenient for users to carry and use, thus improving the user experience.

[0076] In some embodiments, such as Figure 4a and Figure 4bAs shown, the orthographic projections of the first adhesive layer 31 and the second adhesive layer 32 on the support plate 2 fall within the orthographic projection area of ​​the reinforcing layer 30 on the support plate 2, and the orthographic projection areas of the first adhesive layer 31 and the second adhesive layer 32 on the support plate 2 are smaller than the orthographic projection area of ​​the reinforcing layer 30 on the support plate 2. With this configuration, the fixing reinforcing structure 3 can also form a relatively stable fixation for the entire display screen 1 binding area 102 bent to the back side of the support plate 2.

[0077] In some embodiments, such as Figure 5a and Figure 5b As shown, the first adhesive layer 31 and the second adhesive layer 32 coincide with the orthographic projection of the reinforcing layer 30 on the support plate 2. With this configuration, the fixing reinforcing structure 3 can also form a relatively stable fixation for the entire display screen 1 binding area 102 bent to the back side of the support plate 2.

[0078] In some embodiments, the orthographic projection shapes of the first adhesive layer 31 and the second adhesive layer 32 on the support plate 2 include any one of the following shapes: rectangle, triangle, cross, I-shape, T-shape, arc shape, and stripe shape. Alternatively, the edge shapes of the orthographic projection patterns of the first adhesive layer 31 and the second adhesive layer 32 on the support plate 2 include wavy or serrated shapes. Any shape of the first adhesive layer 31 and the second adhesive layer 32 can enable the entire fixing and reinforcing structure 3 to form a relatively stable fixation to the bonding area 102 of the display screen 1 bent to the back side of the support plate 2.

[0079] In some embodiments, the orthographic projection shape of the reinforcing layer 30 on the support plate 2 includes any one of the following shapes: rectangle, triangle, cross, I-shape, T-shape, arc shape, and stripe shape. Alternatively, the edge shape of the orthographic projection pattern of the reinforcing layer 30 on the support plate 2 includes a wavy shape or a sawtooth shape. The reinforcing layer 30 of any shape can reinforce at least a portion of the circuit devices 10, at least a portion of the circuit traces, bonding ports 11, and at least a portion of the bonding traces within the bonding area 102, thereby preventing local breakage or fracture of at least a portion of the circuit devices 10, at least a portion of the circuit traces, at least a portion of the bonding ports 11, and at least a portion of the bonding traces within the bonding area 102 during the bending of the display screen 1.

[0080] In some embodiments, the support plate 2 and the reinforcing layer 30 are made of steel plate or titanium alloy. The support plate 2 is grounded. The first adhesive layer 31 is made of a conductive pressure-sensitive adhesive material, the second adhesive layer 32 is made of a pressure-sensitive adhesive material, and the flexible layer 33 is made of polyester material. The flexible layer 33 may be made of materials such as polyethylene terephthalate or polyimide.

[0081] Optionally, the density of the flexible layer 33 is 1.38 g / cm³. 3 The density of support plate 2 is 7.93 g / cm³. 3 ,according to Figure 2d and Figure 2e Calculated using the structure within. Figure 2d and Figure 2e The fixed reinforcement structure 3 in the middle is relative to Figure 1c and Figure 1d The weight of the adhesive structure can be reduced by about 2.1g, thereby achieving the goal of reducing the weight of the fixed reinforcement structure 3, and in turn, achieving the goal of reducing the weight of the display module.

[0082] In this embodiment, the support plate 2 can also be made of a non-conductive rigid material, such as carbon fiber. However, a layer of conductive material (such as copper foil) will be attached to the surface of the non-conductive support plate 2. The purpose is to ground the reinforcing layer 30, thereby preventing the ungrounded reinforcing layer 30 from affecting the radio frequency antenna of the display module.

[0083] The display module provided in this embodiment, by having the reinforcing layer overlap with the orthographic projection of at least some circuit components in the bonding area onto the support plate, on the one hand, reinforces at least some circuit components in the bonding area, thereby preventing at least some circuit components from breaking or fractured during the bending of the display screen; on the other hand, compared with the scheme of setting the reinforcing plate on the entire surface to reinforce the bonding area in related technologies, the area of ​​the reinforcing layer in this embodiment is greatly reduced. With the material and thickness of the reinforcing layer remaining unchanged compared with the reinforcing plate in related technologies, the weight of the reinforcing layer is greatly reduced compared with the reinforcing plate in related technologies, thereby greatly reducing the weight of the fixed reinforcing structure compared with the adhesive structure in related technologies, and thus greatly reducing the weight of the display module. This makes it more convenient for users to carry and use the display module, improving the user experience.

[0084] The display module can be any product or component with display function, such as OLED panels, OLED TVs, e-paper, mobile phones, tablets, laptops, monitors, digital photo frames, and navigators.

[0085] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display module, comprising a display screen, a support plate, and a fixing and reinforcing structure. The support plate is located on the back side of the display screen. The display screen has a display area and a binding area, with the binding area located around the periphery of the display area. The display screen includes multiple circuit components located in the bonding area. The bonding area of ​​the display screen is bent to the back side of the support plate opposite to the display screen. The fixing and reinforcing structure is located between the support plate and the bonding area. The fixing and reinforcing structure includes a first adhesive layer, a reinforcing layer, and a second adhesive layer, which are stacked sequentially. The first adhesive layer is bonded to the support plate, and the second adhesive layer is bonded to the display screen. Its features are, The reinforcing layer overlaps with the orthographic projection of at least a portion of the circuit devices on the support plate; The circuit traces in the display area extend to the bonding area, and at least a portion of the circuit traces are electrically connected to the circuit device; The display screen also includes a bonding line located in the bonding area. The bonding line is bonded to the printed circuit board. The bonding line includes a bonding port and a bonding trace. The bonding port is electrically connected to the bonding trace, and the bonding trace is electrically connected to the circuit device and the circuit trace. The reinforcing layer coincides with the orthographic projection of the plurality of circuit devices on the support plate; Alternatively, the reinforcing layer coincides with the orthographic projection of the plurality of circuit devices and all the circuit traces within the bonding area onto the support plate; Alternatively, the reinforcing layer may coincide with the orthographic projection of the plurality of circuit devices and the power and ground lines in the circuit traces onto the support plate; or, the reinforcing layer may coincide with the orthographic projection of the plurality of circuit devices, all the circuit traces in the bonding area, the bonding port, and all the bonding traces onto the support plate.

2. The display module according to claim 1, characterized in that, The first adhesive layer and the second adhesive layer coincide with the orthographic projection of the bonding area on the support plate.

3. The display module according to claim 1, characterized in that, The orthographic projections of the first adhesive layer and the second adhesive layer on the support plate fall into the orthographic projection area of ​​the bonding area on the support plate, and the orthographic projection area of ​​the first adhesive layer and the second adhesive layer on the support plate is smaller than the orthographic projection area of ​​the bonding area on the support plate. The orthographic projection of the reinforcing layer on the support plate falls within the orthographic projection area of ​​the first adhesive layer and the second adhesive layer on the support plate, and the orthographic projection area of ​​the reinforcing layer on the support plate is smaller than the orthographic projection area of ​​the first adhesive layer and the second adhesive layer on the support plate.

4. The display module according to claim 1, characterized in that, The orthographic projections of the first adhesive layer and the second adhesive layer on the support plate fall within the orthographic projection area of ​​the reinforcing layer on the support plate, and the orthographic projection areas of the first adhesive layer and the second adhesive layer on the support plate are smaller than the orthographic projection area of ​​the reinforcing layer on the support plate.

5. The display module according to claim 1, characterized in that, The first adhesive layer and the second adhesive layer coincide with the orthographic projection of the reinforcing layer on the support plate.

6. The display module according to claim 2, characterized in that, The fixed reinforcement structure further includes a flexible layer located between the first adhesive layer and the second adhesive layer. The orthographic projections of the flexible layer and the reinforcing layer onto the first adhesive layer do not overlap, and the orthographic projection patterns of the flexible layer and the reinforcing layer onto the first adhesive layer are complementary. The density of the flexible layer is less than the density of the reinforcing layer.

7. The display module according to claim 3, characterized in that, The orthographic projection shapes of the first adhesive layer and the second adhesive layer on the support plate include any one of the following shapes: rectangle, triangle, cross, I-shape, T-shape, arc shape, and stripe shape. Alternatively, the edge shapes of the orthographic projection patterns of the first and second adhesive layers on the support plate may include wavy or serrated shapes.

8. The display module according to claim 1, characterized in that, The orthographic projection shape of the reinforcing layer on the support plate includes any one of the following shapes: rectangle, triangle, cross, I-shape, T-shape, arc shape, and stripe shape. Alternatively, the edge shape of the orthographic projection of the reinforcing layer on the support plate may include a wavy or serrated shape.

9. The display module according to claim 6, characterized in that, The support plate and the reinforcing layer are made of steel plate or titanium alloy. The support plate is grounded. The first adhesive layer is made of a conductive pressure-sensitive adhesive material, and the second adhesive layer is made of a pressure-sensitive adhesive material. The flexible layer is made of polyester material.

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