A flexible display module and display device

Abstract

This utility model discloses a flexible display module and display device, comprising: a cover plate; a flexible display panel including a display area and a non-display area; the non-display area including a bending area and a bonding area, the bonding area being bent to the back of the display area through the bending area, the back of the display area being the side away from the cover plate; a driving chip located on the side of the bonding area of ​​the flexible display panel away from the display area and disposed within the bonding area; a support member located on the side of the bonding area of ​​the flexible display panel away from the display area, the support member contacting the bonding area, the support member surrounding the driving chip, and the support member not contacting the driving chip. This utility model, by setting a support member and a cover plate, changes the force-bearing structure of the flexible module, improves the impact resistance of the flexible display module, reduces the deformation of the flexible display module when subjected to external impact forces, and avoids the risk of film peeling from the flexible display module.

Description

Technical Field

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

[0002] Traditional display technology has matured significantly, while flexible display panels have become the mainstream in the display field due to their thinness, lightness, and bendability. Among them, OLED (Organic Light Emitting Display) has become one of the hottest research topics in the field of flexible displays in recent years due to its excellent performance, such as fast response speed, wide viewing angle, high brightness, low power consumption, self-emissive devices, and anti-bending properties.

[0003] In existing flexible display modules, the thickness of the cover plate has been reduced to achieve a thinner and lighter design, resulting in greater stress in the bending area of ​​the flexible display module. The reduced cover plate thickness leads to a decrease in the strength of the flexible display module. During strength tests such as compression and drop ball tests on the flexible display panel, the film layers in the bending and bonding areas experience significant shear forces, causing the film layers to detach. Utility Model Content

[0004] This invention provides a flexible display module and display device to solve the problem that the film layer in the bending area of ​​existing flexible display modules is easily detached under external impact.

[0005] According to one aspect of this utility model, a flexible display module is provided, comprising:

[0006] Cover plate;

[0007] A flexible display panel includes a display area and a non-display area; the non-display area includes a bending area and a bonding area, the bonding area being bent to the back of the display area through the bending area, the back of the display area being the side away from the cover plate;

[0008] The driver chip is located on the side of the bonding area of ​​the flexible display panel away from the display area, and is disposed in the bonding area;

[0009] A support member is located on the side of the bonding area of ​​the flexible display panel away from the display area. The support member is in contact with the bonding area, surrounds the driving chip, and is not in contact with the driving chip.

[0010] Optionally, the flexible display module further includes:

[0011] The housing; the flexible display panel is located in the receiving space formed by the housing and the cover plate; the support is fixed to the bottom of the housing by a first adhesive layer.

[0012] Optionally, the support member has a groove on the side near the flexible display panel, and the driving chip is located in the groove.

[0013] Optionally, the vertical projection of the binding area on the cover plate is located within the vertical projection of the support member on the cover plate.

[0014] Optionally, the support may include a PET support.

[0015] Optionally, the flexible display module further includes:

[0016] The first adhesive layer is located in the display area of ​​the flexible display panel and is attached to the light-emitting surface of the flexible display panel;

[0017] A polarizing layer is located on the side of the first adhesive layer away from the flexible display panel.

[0018] Optionally, the flexible display module further includes:

[0019] A buffer layer is located on the side of the flexible display panel away from the cover plate in the display area.

[0020] The second adhesive layer is located in the bonding area of ​​the flexible display panel, attached to the back of the bonding area, and after the bending area is bent, the second adhesive layer adheres to the buffer layer.

[0021] Optionally, the thickness of the support member is greater than the distance between the bonding area of ​​the flexible display panel and the outer shell.

[0022] Optionally, the cover plate is made of sapphire.

[0023] According to another aspect of the present invention, a display panel is provided, comprising: any of the flexible display modules described above.

[0024] The technical solution of this utility model embodiment, by setting a support member on the back of the bonding area of ​​the flexible display panel, surrounds and avoids the driver chip, thus preventing compression of the driver chip and affecting the light emission of the flexible display module. Furthermore, the support member is in contact with the flexible display panel, providing effective support during compression and drop ball tests, as well as when the flexible display module is subjected to external pressure. The cover plate and support member alter the stress structure of the flexible module, improving its impact resistance and reducing the deformation of the bending area, thereby effectively preventing film peeling at the bending area. Without increasing the thickness of the flexible display module, this effectively avoids the risk of film peeling due to shear force at the bending area.

[0025] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a ball drop test for a flexible display module in the prior art.

[0028] Figure 2 A schematic diagram of the structure of a flexible display module provided in an embodiment of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of another flexible display module provided in an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the structure of another flexible display module provided in an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the structure of another flexible display module provided in an embodiment of the present utility model. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] As described in the background section, in pursuit of thinner and lighter designs, existing flexible display modules have reduced the thickness of the cover plate, making the bending area of ​​the flexible display module more vulnerable to stress. With the reduced cover plate thickness, during drop ball and compression tests on the flexible display module, the bending area experiences greater impact force due to the reduced cover plate thickness. This causes the film layers at the bending and bonding areas of the flexible display module to experience opposing shear forces, resulting in film layer detachment. Figure 1 This is a schematic diagram of a ball-drop test for a flexible display module in the prior art. (See also...) Figure 1 The flexible display module 100 includes a flexible display panel 10, which includes a display area, a bending area, and a bonding area. A buffer layer 11 is located on the back of the display area of ​​the flexible display panel 10. A first adhesive layer 12 is located on the side of the flexible display panel away from the buffer layer 11 and is located in the display area of ​​the flexible display panel 10. A polarizing layer 13 is located on the side of the first adhesive layer 12 away from the flexible display panel 10. A cover plate 14 and a housing 15 also exist, forming a receiving space within which the flexible display module 100 is located. Due to the thin and light design of the cover plate 14, the flexible display module 100 experiences significant impact forces during drop ball and compression tests, as well as when the screen is subjected to external pressure. The film layer at the bending area of ​​the flexible display module 100 is prone to deformation and detachment due to the opposite shear force.

[0035] To solve the above-mentioned technical problems, this utility model provides a flexible display module. Figure 2 This is a schematic diagram of the structure of a flexible display module provided in an embodiment of the present invention. See also... Figure 2The flexible display module 200 includes: a cover plate 21; a flexible display panel 20, which includes a display area 201 and a non-display area 202. The non-display area includes a bending area 2021 and a bonding area 2022. The bonding area 2022 is bent to the back of the display area 201 through the bending area 2021. The back of the display area 201 is the side away from the cover plate 21; a driving chip 22 is located on the side of the bonding area 2022 of the flexible display panel 20 away from the display area 201 and is disposed in the bonding area 2022; and a support member 23 is located on the side of the bonding area 2022 of the flexible display panel 20 away from the display area 201. The support member 23 is in contact with the bonding area 2022, surrounds the driving chip 22, and is not in contact with the driving chip 22.

[0036] Specifically, in the flexible display module 200, the display area 201 of the flexible display panel 20 is used to emit light to display images, and the bonding area 2022 is used to connect the driver chip 22. The driver chip 22 provides driving signals to the flexible display panel 200. The bending area 2021 of the flexible display panel 20 is bendable. After bending, the bonding area 2022 is located on the back of the flexible display module 200. The cover plate 21 is located on the light-emitting side of the flexible display panel 20 and is used to protect the flexible display panel 20 and prevent it from being damaged. The driver chip 22 is installed on the side of the bonding area 2022 of the flexible display panel 20 away from the display area. The driver chip 22 is located in the bonding area 2022 and is connected to the bonding area 2022. The driver chip 22 is used to provide driving signals to the flexible display panel 20 and control the flexible display panel 20 to display images. A support member 23 is also provided on the side of the bonding area 2022 of the flexible display panel 20 away from the display area 201. The support member 23 is in contact with the bonding area 2022 and surrounds the driving chip 22, but the driving chip 22 and the support member 23 are not in contact. The support member 23 is in contact with the bonding area 2022 of the flexible display panel 20. When the flexible display module 200 is subjected to tests such as extrusion and drop ball tests, the support member 23 can provide support in the bending area 2021 and the bonding area 2022 of the flexible display panel 20, reduce the deformation of the flexible display module when subjected to external impact force, thereby reducing the shear force between the various film layers of the flexible display module 200, and thus improving the impact resistance of the flexible display module 200 and preventing the film layers from falling off. The support member 23 is in contact with the flexible display panel 20, but not with the driver chip 22. This not only prevents the support member 23 from damaging the driver chip 22, but also allows the support member 23 to fully support the flexible display module 200, reducing the deformation of the flexible display module 200, effectively protecting the flexible display module 200, and improving the display effect of the flexible display module 200.

[0037] The technical solution provided by this utility model embodiment, by setting a support member on the back of the bonding area of ​​the flexible display panel, surrounds and avoids the driver chip, thus preventing compression of the driver chip and affecting the light emission of the flexible display module. Furthermore, the support member is in contact with the flexible display panel, providing effective support during compression and drop ball tests, as well as when the flexible display module is subjected to external pressure. The cover plate and support member alter the stress structure of the flexible module, improving its impact resistance and reducing the deformation of the bending area, thereby effectively preventing film peeling at the bending area. Without increasing the thickness of the flexible display module, this effectively avoids the risk of film peeling due to shear force at the bending area.

[0038] Optionally, based on the above embodiments, Figure 3 This is a schematic diagram of another flexible display module provided in an embodiment of the present invention. See also... Figure 3 The flexible display module 200 includes a housing 24, a flexible display panel 20 located in the receiving space formed by the housing 24 and the cover plate 21, and a support member 23 fixed to the bottom of the housing 24 by a first adhesive layer 25.

[0039] Specifically, the flexible display module 200 also includes a housing 24, which is U-shaped. The housing 24 and the cover plate 21 form an accommodating space, within which the flexible display panel 20 is located. A first adhesive layer 25 is adhered to the bottom of the housing 24 within this accommodating space. The other side of the first adhesive layer 25 is attached to the support member 23 to fix the support member 23 and prevent displacement of the support member 23, which could damage the driver chip 22. The material of the first adhesive layer 25 can be selected according to actual needs, and this embodiment of the invention does not impose any limitations on it.

[0040] Optionally, based on the above embodiments, see also... Figure 2 and Figure 3 The support member 23 has a groove on the side near the flexible display panel 20, and the driving chip 22 is located in the groove.

[0041] Specifically, since both the support member 23 and the driver chip 22 are located in the bonding area 2022 of the flexible display panel 20, a groove can be provided on the side of the support member 23 near the flexible display panel 20. The driver chip 22 is placed in this groove to prevent the support member 23 from damaging the driver chip 22. The groove is provided on the side of the support member 23 that contacts the flexible display panel 20, and the driver chip 22 is placed in the groove. The size of the groove can be determined according to the size and thickness of the driver chip 22. It is necessary to ensure that the support member 23 and the driver chip 22 do not contact each other to avoid the support member 23 squeezing the driver chip 22, effectively protecting the driver chip 22.

[0042] Optionally, based on the above embodiments, see also... Figure 2 and Figure 3 The vertical projection of the binding area 2022 on the cover plate 21 is located within the vertical projection of the support member 23 on the cover plate 21.

[0043] Specifically, to ensure good support, the support area of ​​the support member 23 can be designed to be relatively large, so that it can fully support the bonding area 2022 of the flexible display panel 20. The vertical projection of the bonding area 2022 on the cover plate 21 can be smaller than the vertical projection of the support member 23 on the cover plate 21, ensuring that the vertical projection of the bonding area 2022 on the cover plate 21 is completely within the vertical projection of the support member 23 on the cover plate 21. By setting a larger support member 23, the flexible display module 200 is fully supported, avoiding the risk of the flexible display module 200 detaching.

[0044] The flexible display module provided by this utility model has a first adhesive-backed fixing support at the bottom of the shell, and a groove is provided on the side of the support adjacent to the flexible display panel. The driving chip is placed inside the groove, which effectively protects the driving chip from the risk of being squeezed by the support. By providing a support with a large area, the flexible display module can be effectively supported, reducing the deformation of the flexible display module's bending area when subjected to external impact, thereby effectively preventing the film layers in the bending area of ​​the flexible display module from falling off.

[0045] Optionally, based on the above embodiments, Figure 4 This is a schematic diagram of another flexible display module provided in an embodiment of the present invention. See also... Figure 4 The flexible display module 200 also includes a first adhesive layer 26 located in the display area 201 of the flexible display panel 20 and attached to the light-emitting surface of the flexible display panel 20; and a polarizing layer 27 located on the side of the first adhesive layer 26 away from the flexible display panel 20.

[0046] Specifically, the flexible display module 200 further includes a first adhesive layer 26 and a polarizing layer 27. The first adhesive layer 26 is located in the display area 201 of the flexible display panel 20, attached to one side of the light-emitting surface of the flexible display panel 20. The polarizing layer 27 is disposed on the side of the first adhesive layer 26 away from the flexible display panel 20. The first adhesive layer 26 is used to fix the polarizing layer 27. The polarizing layer 27 can selectively filter light, allowing light from a specific direction to pass through and form polarized light. The polarizing layer 27 can effectively improve the display effect of the flexible display module 200 and increase color saturation. The material of the first adhesive layer 26 can be selected according to actual needs, and this embodiment of the present invention does not limit it.

[0047] Optionally, based on the above embodiments, Figure 5 This is a schematic diagram of another flexible display module provided in an embodiment of the present invention. See also... Figure 5 The flexible display module 200 also includes a buffer layer 28 located on the side of the display area 201 of the flexible display panel 20 away from the cover plate 21; and a second adhesive layer 29 located on the bonding area 2022 of the flexible display panel 20, attached to the back of the bonding area 2022, and after the bending area 2021 is bent, the second adhesive layer 29 and the buffer layer 28 are bonded together.

[0048] Specifically, the flexible display module 200 also includes a buffer layer 28 located on the side of the flexible display panel 20 display area 2021 away from the cover plate 21. The buffer layer 28 can support and protect the flexible display panel. A second adhesive layer 29 is also provided on the back of the bonding area 2022 of the flexible display panel 20. After being bent through the bending area 2021, the second adhesive layer 29 adheres to the buffer layer 28, effectively fixing the bonding area of ​​the flexible display panel 20.

[0049] Optionally, based on the above embodiments, see also... Figures 2-5 The thickness of the support member 23 is greater than the distance between the bonding area 2022 of the flexible display panel 20 and the outer shell 24.

[0050] Specifically, the support member 23 is located between the flexible display panel 20 and the outer shell 24. The support member 23 is fixed to the outer shell 24 by the first adhesive layer 25, and the other side of the support member 23 also needs to contact the bonding area 2022 of the flexible display panel 20. Therefore, when manufacturing the support member 23, the thickness of the support member 23 needs to be determined according to the distance between the flexible display panel 20 and the outer shell 24. During the assembly of the flexible display panel 20, gaps may appear between the flexible display panel and the support member 23 due to factors such as the thickness of the module itself. When determining the thickness of the support member 23, the thickness of the support member 23 is slightly greater than the distance between the flexible display panel 20 and the outer shell 24 to ensure that the support member 23 and the flexible display panel 20 achieve zero contact after assembly, thus providing better support.

[0051] Optionally, based on the above embodiments, see also... Figures 2-5 The support member 23 includes a PET support member, and the cover plate 21 is made of sapphire material.

[0052] Specifically, to better support the flexible display module, the support component 23 can be a PET (polyethylene terephthalate) support component. PET support components have excellent physical and mechanical properties, good electrical insulation, good fatigue resistance and stability, and strong impact resistance, effectively supporting the flexible display module. The cover plate 21 can be made of sapphire. Sapphire cover plates have greater hardness and impact resistance. Compared with ordinary glass cover plates, sapphire cover plates have a lower refractive index, less fiber distortion, higher corrosion resistance, are less prone to breakage, and have better impact resistance. The PET support layer and sapphire cover plate effectively improve the impact resistance of the flexible display module, reduce the deformation of the flexible display module under external impact, and thus avoid the risk of film layer detachment.

[0053] The flexible display module provided by this utility model improves the stress structure of the flexible display module by setting a sapphire cover plate and a PET support layer in the bending area of ​​the flexible display module. The sapphire cover plate and PET support layer improve the impact resistance of the flexible display module, reduce the deformation of the flexible display module when subjected to external impact force, reduce the shear force on the flexible display module, thereby avoiding the risk of film peeling off the flexible display module and improving the life of the flexible display module.

[0054] This utility model embodiment also provides a display device, including the flexible display module 200 described in any of the above embodiments.

[0055] The display device provided in this embodiment can achieve the beneficial effects of the flexible display module 200 provided in any of the above embodiments, and will not be described in detail here.

[0056] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A flexible display module, characterized in that, include: Cover plate; A flexible display panel includes a display area and a non-display area; the non-display area includes a bending area and a bonding area, the bonding area being bent to the back of the display area through the bending area, the back of the display area being the side away from the cover plate; The driver chip is located on the side of the bonding area of ​​the flexible display panel away from the display area, and is disposed in the bonding area; A support member is located on the side of the bonding area of ​​the flexible display panel away from the display area. The support member is in contact with the bonding area, surrounds the driving chip, and is not in contact with the driving chip.

2. The flexible display module according to claim 1, characterized in that, It also includes a housing; the flexible display panel is located in the receiving space formed by the housing and the cover plate; the support is fixed to the bottom of the housing by a first adhesive layer.

3. The flexible display module according to claim 1, characterized in that, The support member has a groove on the side near the flexible display panel, and the driving chip is located in the groove.

4. The flexible display module according to claim 1, characterized in that, The vertical projection of the binding area on the cover plate lies within the vertical projection of the support member on the cover plate.

5. The flexible display module according to claim 1, characterized in that, The support includes a PET support.

6. The flexible display module according to claim 1, characterized in that, Also includes: The first adhesive layer is located in the display area of ​​the flexible display panel and is attached to the light-emitting surface of the flexible display panel; A polarizing layer is located on the side of the first adhesive layer away from the flexible display panel.

7. The flexible display module according to claim 1, characterized in that, Also includes: A buffer layer is located on the side of the flexible display panel away from the cover plate in the display area. The second adhesive layer is located in the bonding area of ​​the flexible display panel, attached to the back of the bonding area, and after the bending area is bent, the second adhesive layer adheres to the buffer layer.

8. The flexible display module according to claim 2, characterized in that, The thickness of the support member is greater than the distance between the bonding area of ​​the flexible display panel and the outer shell.

9. The flexible display module according to claim 1, characterized in that, The cover plate is made of sapphire.

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

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