Display device and manufacturing method thereof

Abstract

The invention provides a display device and a manufacturing method thereof, and the display device comprises a display panel which comprises a display area and a bending area; the back film is positioned on the back surface of the display panel; the back film is provided with a through groove in the thickness direction, and the through groove completely covers the bending area; the enclosure thin film is located on the side, close to the display area, of the bending area, the enclosure thin film is bonded to the side, close to the through groove, of the back film, and a containing space where inert gas and glue can circulate is formed between the enclosure thin film and the through groove; and the first supporting glue is positioned in the accommodating space, and the accommodating space is completely filled with the first supporting glue.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a display device and its manufacturing method. Background Technology

[0002] In the field of Organic Light Emitting Diode (OLED) displays, ultra-narrow bezels have become an important development trend. To achieve this goal, in-side dispensing solutions have been widely explored and applied. However, these solutions are still in the exploratory and verification stage, and a mature and reliable process system has not yet been established.

[0003] In conventional internal dispensing processes, the dispensing pattern exhibits significant uncertainty. This leads to two problems: firstly, adhesive can easily overflow to the edges of the OLED module's stacked layers, causing peeling between layers and affecting the structural stability of the OLED module; secondly, gaps can easily appear after dispensing, preventing the adhesive fill rate from being fully guaranteed, thus reducing the structural stability and lifespan of the OLED module and severely restricting the mass production and quality improvement of ultra-narrow bezel OLED display modules. Summary of the Invention

[0004] This invention provides a display device and its manufacturing method, which ensures structural stability while taking into account the narrow bezel of the display device.

[0005] In a first aspect, embodiments of the present invention provide a display device, comprising: The display panel includes a display area and a bending area; A back film is located on the back of the display panel; the back film has a through groove in the thickness direction, and the through groove completely covers the bending area; A retaining film is located on the side of the bending area near the display area, and the retaining film is bonded to the side of the back film near the through groove, forming a space for the flow of inert gas and adhesive between the retaining film and the through groove. The first support adhesive is located within the accommodating space and completely fills the accommodating space.

[0006] In one possible implementation, the display panel further includes a bonding area bent to the back of the display area; the back film includes a first sub-part located on the side of the display area near the retaining film, a second sub-part located on the side of the bonding area near the retaining film, and a heat dissipation film located between the first sub-part and the second sub-part; the heat dissipation film and the retaining film are spaced apart along a direction parallel to the plane of the display area.

[0007] In one possible implementation, along a direction perpendicular to the plane where the display area is located, the maximum thickness of the first support adhesive is greater than the radius of the bending area and less than the diameter of the bending area.

[0008] In one possible implementation, a second support adhesive is further included on the side of the bending area away from the display area, and a cover plate is located on the light-emitting side of the display panel; the cover plate covers the display panel and extends to the side of the bending area away from the display area; wherein, along a direction parallel to the plane of the cover plate, the side of the second support adhesive away from the display area is flush with the same-side edge of the cover plate.

[0009] In one possible implementation, a middle frame is also included, comprising a first main body and a second main body connected in sequence. The first main body extends in a direction parallel to the plane of the cover plate, and the second main body extends in a direction perpendicular to the plane of the cover plate. The first main body overlaps with the side of the second support adhesive opposite to the cover plate.

[0010] In one possible implementation, a protective adhesive is also included on the side of the bending area opposite to the display area, and the protective adhesive is completely covered by the second support adhesive.

[0011] In one possible implementation, the material of the enclosure film includes at least one of silicone and PET.

[0012] In one possible implementation, the inert gas includes one of nitrogen, argon, helium, and neon.

[0013] Secondly, embodiments of the present invention also provide a method for manufacturing a display device as described in any of the above claims, comprising: The back film is disposed on the back of the display panel; The enclosure film is bonded to the back film on the side near the through groove; The inert gas is filled into the accommodating space formed between the enclosure film and the through groove; The display panel is bent; The adhesive is injected into the accommodating space and completely fills the accommodating space; The adhesive is cured to form the first support adhesive.

[0014] In one possible implementation, after curing the adhesive to form the first support adhesive, the method further includes: A second support adhesive is applied to the side of the bending area opposite to the display area. The middle frame overlaps with the second support adhesive; wherein, the middle frame includes a first main body and a second main body connected in sequence, the first main body extends in a direction parallel to the plane where the display area is located, and the second main body extends in a direction perpendicular to the plane where the display area is located; the first main body overlaps with the side of the second support adhesive away from the display area.

[0015] The beneficial effects of this invention are as follows: This invention provides a display device and its manufacturing method. The display device includes a display panel, a back film, a retaining film, and a first supporting adhesive. The display panel includes a display area and a bending area. The back film is located on the back of the display panel and has a through groove in its thickness direction, which completely covers the bending area. In this way, the bonding area of ​​the display device can be bent to the back of the display area through the bending area, providing a guarantee for subsequent narrow bezel design. In addition, the retaining film is located on the side of the bending area near the display area, and the retaining film is bonded to the side of the back film near the through groove, forming a space for inert gas and adhesive to flow between the retaining film and the through groove. Moreover, the first supporting adhesive is located in the space and completely fills the space. In this way, during the actual manufacturing process, the containment space is filled with inert gas, causing the retaining film to bulge and maintain a specific shape, forming a relatively closed and regularly contoured cavity. This provides stable spatial constraints for subsequent adhesive dispensing, effectively preventing adhesive overflow. Simultaneously, it ensures the maximum curing of the first support adhesive's adhesive form, significantly improving the filling rate and saturation of the first support adhesive, effectively enhancing the structural stability of the display device. In this way, structural stability is guaranteed while maintaining the narrow bezel of the display device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one of the internal dispensing processes used in the fabrication of OLED display modules in related technologies. Figure 2 This is a top view schematic diagram of one embodiment of the display device provided in this invention; Figure 3 For along Figure 2 A schematic diagram of one type of cross-sectional structure in the direction shown in MM; Figure 4 For along Figure 2 A schematic diagram of one type of cross-sectional structure in the direction shown in MM; Figure 5 A flowchart of one method of manufacturing a display device provided in an embodiment of the present invention; Figure 6 Preparation provided for embodiments of the present invention Figure 3 The diagram shown is one of the process flow diagrams for the display device. Figure 7 In order to be in Figure 6 Flowchart of one of the methods following step S106; Explanation of reference numerals in the attached figures: 10-Display panel; A-Display area; B-Bending area; 20-Back film; 30-Through groove; 40-Enclosure film; 50-Accommodation space; 60-First support adhesive; C-Binding area; 21-First sub-part; 22-Second sub-part; 70-Heat dissipation film; 80-Second support adhesive; 90-Cover plate; 91-Middle frame; 911-First main body; 912-Second main body; 92-Protective adhesive; 93-Adhesive layer; 94-Filter layer; 95-Adhesive layer. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Furthermore, the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "inner," "outer," "upper," and "lower" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] It should be noted that the dimensions and shapes of the figures in the accompanying drawings do not reflect actual proportions and are intended only to illustrate the content of the invention. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0020] In related technologies, to achieve extremely narrow bezels in OLED display modules, methods such as... Figure 1The internal dispensing process shown is used to fabricate an OLED display module. ① Dispensing adhesive; ② Bending the bonding area; ③ Adding and curing the adhesive. Due to the fluidity of the adhesive itself, the dispensing pattern has significant uncertainties. Not only is the adhesive filling rate insufficient, making complete filling impossible; but the filling pattern is also prone to air bubbles and gaps, affecting structural stability; moreover, adhesive overflow is very likely to occur, contaminating related components of the module.

[0021] In view of this, embodiments of the present invention provide a display device and a method for manufacturing the same, which can ensure structural stability while taking into account the narrow bezel of the display device.

[0022] Combination Figure 2 and Figure 3 As shown, where, Figure 2 This is a top view schematic diagram of one embodiment of the display device provided by the present invention. Figure 3 For along Figure 2 A schematic diagram of one cross-sectional structure along the direction shown in the MM diagram. Specifically, the display device provided in this embodiment of the invention includes: Display panel 10 includes display area A and bending area B; The back film 20 is located on the back of the display panel 10; the back film 20 has a through groove 30 in the thickness direction, and the through groove 30 completely covers the bending area B; The enclosure film 40 is located on the side of the bending area B near the display area A, and the enclosure film 40 is bonded to the side of the back film 20 near the through groove 30. An accommodating space 50 for inert gas and adhesive to flow is formed between the enclosure film 40 and the through groove 30. The first support adhesive 60 is located within the accommodating space 50 and completely fills the accommodating space 50.

[0023] In specific implementation, the display device provided in this embodiment of the invention includes a display panel 10, a back film 20, a retaining film 40, and a first supporting adhesive 60. The display panel 10 includes a display area A and a bending area B. Still in conjunction with... Figure 3 As shown, the display panel 10 also includes a bonding area C bent to the back of the display area A. Of course, the display panel 10 can be divided into regions according to actual application needs, which is not limited here. This ensures a narrow bezel for the display device. Furthermore, the back film 20 is located on the back of the display panel 10, and the back film 20 has a through groove 30 in the thickness direction, which completely covers the bending area B. In this way, the back film 20 ensures the structural stability between the relevant film layers in the display device. Moreover, the through groove 30 ensures that the bonding area C is bent to the back of the display area A.

[0024] For example, a silicone rubber film with a thickness of 0.1nm to 0.3nm is selected as the auxiliary material. This film has excellent flexibility, sealing performance, and UV resistance, and can meet the requirements of bending and curing processes. It should be noted that when bonding the enclosure film 40 to the backing film 20, it is necessary to ensure that there are no air bubbles or gaps between the enclosure film 40 and the backing film 20, and that the film completely covers the through-groove 30 area of ​​the backing film 20. For example, the bonding width of the enclosure film 40 extends 1mm to 2mm beyond the groove edge of the corresponding side through-groove 30 to ensure a good sealing effect.

[0025] Furthermore, the retaining film 40 is located on the side of the bending area B near the display area A, and the retaining film 40 is bonded to the side of the back film 20 near the through groove 30. This creates a relatively enclosed accommodating space 50 between the retaining film 40 and the through groove 30, which is used for the subsequent flow of inert gas and adhesive. For example, the retaining film 40 and the side of the back film 20 near the through groove 30 can be bonded using AB adhesive. For example, the inert gas includes one of nitrogen, argon, helium, and neon. Since inert gas and adhesive rarely react, the manufacturing efficiency of the display device is improved while maintaining the shape of the accommodating space 50. Moreover, in the actual manufacturing process, the accommodating space 50 is inflated by inert gas, causing the retaining film 40 to bulge and maintain a specific shape, forming a relatively enclosed and regularly contoured cavity. This provides stable spatial constraints for subsequent adhesive dispensing, effectively preventing adhesive overflow. Meanwhile, this ensures the maximum curing of the first support adhesive 60, significantly improving its filling rate and saturation, and effectively enhancing the structural stability of the display device. In this way, structural stability is guaranteed while maintaining the narrow bezel of the display device.

[0026] In this embodiment of the invention, the display panel 10 further includes a bonding area C bent to the back of the display area A; the back film 20 includes a first sub-part 21 located on the side of the display area A near the obstruction film 40, a second sub-part 22 located on the side of the bonding area C near the obstruction film 40, and a heat dissipation film 70 located between the first sub-part 21 and the second sub-part 22; the heat dissipation film 70 and the obstruction film 40 are spaced apart along a direction parallel to the plane of the display area A.

[0027] In the specific implementation process, it is still combined with Figure 3In the exemplary embodiment shown, the display panel 10 further includes a bonding area C bent to the back of the display area A. For example, a driver chip (not shown) can be bonded to the display panel 10 on the side of the bonding area C facing away from the display area A, so that the drive signal from the driver chip can effectively drive the display of the display panel 10. Furthermore, the back film 20 includes a first sub-part 21 located on the side of the display area A facing away from the retaining film 40, a second sub-part 22 located on the side of the bonding area C near the retaining film 40, and a heat dissipation film 70 located between the first sub-part 21 and the second sub-part 22. For example, the orthographic projection of the second sub-part 22 onto the display area A completely falls within the area of ​​the orthographic projection of the first sub-part 21 onto the display area A. For example, the heat dissipation film 70 includes a mesh adhesive, foam, and copper foil sequentially stacked on the back of the display area A. In this way, the heat dissipation performance of the display device is improved by the heat dissipation film 70, effectively avoiding damage to the internal components of the display device due to excessive temperature, and improving the service life of the display device. Furthermore, the heat dissipation film 70 and the baffle film 40 are spaced apart along a direction parallel to the plane where the display area A is located (as shown by arrow X in the figure), which further avoids the baffle film 40 from squeezing and damaging the adjacent film layers, thus ensuring the performance of the display device while taking into account the narrow bezel design of the display device.

[0028] In this embodiment of the invention, along the direction perpendicular to the plane where the display area A is located, the maximum thickness of the first support adhesive 60 is greater than the radius of the bending area B and less than the diameter of the bending area B.

[0029] In the specific implementation process, as shown by arrow Y in the figure, the direction is perpendicular to the plane where the display area A is located. In this direction, the maximum thickness of the first support adhesive 60 is greater than the thickness of the bending area B, but less than the diameter of the bending area B. In this way, the first support adhesive 60 effectively supports the bending area B while avoiding bulging of the bending area B due to excessive support force, thereby improving the performance of the display device. The specific value of the radius of the bending area B and the thickness range of the first support adhesive 60 can be set according to the actual application needs and are not limited here.

[0030] In this embodiment of the invention, the display device further includes a second support adhesive 80 located on the side of the bending area B opposite to the display area A, and a cover plate 90 located on the light-emitting side of the display panel 10; the cover plate 90 covers the display panel 10 and extends to the side of the bending area B opposite to the display area A; wherein, along a direction parallel to the plane of the cover plate 90, the side of the second support adhesive 80 opposite to the display area A is flush with the same-side edge of the cover plate 90.

[0031] In the specific implementation process, such as Figure 4The following is along Figure 2 The diagram shows one possible cross-sectional structure along the MM direction. Specifically, the display device also includes a second support adhesive 80 located on the side of the bending area B opposite to the display area A. This effectively protects the bending area B; simultaneously, the second support adhesive 80 effectively improves the impact resistance of the bending area B, thereby enhancing the overall drop resistance and effectively preventing wiring breakage in the bending area B. Furthermore, the display device also includes a cover plate 90 located on the light-emitting side of the display panel 10; this cover plate 90 covers the display panel 10 and extends to the side of the bending area B opposite to the display area A; wherein, along a direction parallel to the plane of the cover plate 90 (as shown by arrow X in the diagram), the side of the second support adhesive 80 opposite to the display area A is flush with the same-side edge of the cover plate 90. In this way, the second support adhesive 80 can be effectively overlapped with the overall frame 91, providing a guarantee for subsequent narrow bezel design.

[0032] In this embodiment of the invention, the display device further includes a middle frame 91, the middle frame 91 including a first main body 911 and a second main body 912 connected in sequence, the first main body 911 extending in a direction parallel to the plane of the cover plate 90, and the second main body 912 extending in a direction perpendicular to the plane of the cover plate 90; the first main body 911 overlaps with the side of the second support adhesive 80 away from the cover plate 90.

[0033] Still combined Figure 4 In the exemplary embodiment shown, the display device further includes a middle frame 91, which includes a first main body 911 and a second main body 912 connected in sequence. The first main body 911 extends in a direction parallel to the plane of the cover plate 90 (as shown by arrow X in the figure), and the second main body 912 extends in a direction perpendicular to the plane of the cover plate 90 (as shown by arrow Y in the figure). Furthermore, the first main body 911 overlaps with the side of the second support adhesive 80 away from the cover plate 90. In this way, during actual manufacturing, based on the supporting effect of the first support adhesive 60 and the second support adhesive 80 on the related structures, the first main body 911 of the middle frame 91 and the side of the second support adhesive 80 away from the cover plate 90 can be overlapped, thereby effectively reducing the distance between the display area A and the same-side edge of the cover plate 90 near the bending area B, thus ensuring the narrow bezel design of the display device.

[0034] In this embodiment of the invention, the display device further includes a protective adhesive 92 located on the side of the bending area B opposite to the display area A, and the protective adhesive 92 is completely covered by the second support adhesive 80.

[0035] In the specific implementation process, it is still combined with Figure 3 and Figure 4As shown, the display device also includes a protective adhesive 92 located on the side of the bending area B opposite to the display area A. For example, the protective adhesive 92 is a micro coating layer (MCL) adhesive. This not only effectively prevents external water and oxygen from corroding the relevant traces within the bending area B, but also ensures that the relevant traces within the bending area B remain in a stress-neutral layer during bending before the display panel 10 is bent, thus effectively avoiding the risk of breakage of the relevant traces in the bending area B and improving the performance of the display device. Furthermore, the protective adhesive 92 is completely covered by a second support adhesive 80. This ensures that while maintaining the bending performance of the display panel 10, the second support adhesive 80 also provides support for the relevant film layers, thereby improving the impact resistance of the bending area B of the display device and enhancing the overall drop resistance.

[0036] In this embodiment of the invention, the material of the retaining film 40 includes at least one of silicone and polyethylene terephthalate (PET). This ensures the flexibility of the retaining film 40, allowing it to deform synchronously with the bending action during the bending of the display panel 10. This avoids hindering the bending operation and prevents cracking due to bending stress, while also ensuring the integrity of the adhesive cavity during bending. Of course, the material used to prepare the retaining film 40 can be selected according to actual application needs. For example, a material resistant to ultraviolet (UV) light can be selected to prepare the retaining film 40. This ensures that even when the adhesive inside the retaining film 40 is subsequently cured using a UV curing process, the retaining film 40 maintains stable performance and is not prone to aging or deformation.

[0037] In this embodiment of the invention, the display device further includes an adhesive layer 93 and a filter layer 94 located between the cover plate 90 and the display area A. Exemplarily, the adhesive layer 93 can be an optically transparent adhesive (OCA). Exemplarily, the filter layer 94 can be a polarizer. The filter layer 94 and the adhesive layer 93 are sequentially disposed away from the display area A; the edge of the filter layer 94 and the adhesive layer 93 away from the display area A is in contact with a second support adhesive 80, thereby effectively preventing water and oxygen from corroding the filter layer 94 and improving the performance of the display device. Exemplarily, the display device provided in this embodiment of the invention also includes an adhesive layer 95 located between the heat dissipation film 70 and the second sub-part 22; this adhesive layer 95 can be a pressure-sensitive adhesive, double-sided adhesive, etc., thus ensuring the structural stability of the display device. Of course, the display device provided in this embodiment of the invention, in addition to the film layer structures mentioned above, can also be provided with other film layer structures according to actual application needs, which will not be detailed here.

[0038] In specific implementation, the display device provided in the embodiments of the present invention can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Other essential components of this display device are understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting the present invention.

[0039] Based on the same inventive concept, such as Figure 5 As shown, this embodiment of the invention also provides a method for manufacturing a display device, comprising: S101: The back film is disposed on the back of the display panel; S102: Adhere the enclosure film to the side of the back film near the through groove; S103: The inert gas is filled into the accommodating space formed between the enclosure film and the through groove; S104: Bend the display panel; S105: Inject the adhesive into the accommodating space and completely fill the accommodating space; S106: The adhesive is cured to form the first support adhesive.

[0040] The following describes the preparation Figure 3 Taking the display device shown as an example, combined with Figure 6 The process flow diagram shown provides an explanation of the specific implementation process of steps S101 to S106: First, the driver chip is bonded to the display panel 10 in the bonding area C. Then, a filter layer 94, an adhesive layer 93, and a cover plate 90 are sequentially disposed on the light-emitting side of the display panel 10, and a back film 20 is disposed on the back side of the display area A. A through groove 30 is formed in the thickness direction of the back film 20. Then, a retaining film 40 is bonded to the side of the back film 20 near the through groove 30. For example, the retaining film 40 can be bonded to the side of the back film 20 near the through groove 30 using double-sided adhesive. The retaining film 40 can completely cover the through groove 30 area, thereby providing a guarantee for the subsequent filling of inert gas to form a relatively closed adhesive cavity. Then, inert gas is filled into the accommodating space 50 formed between the enclosure film 40 and the through groove 30; for example, the inflation pressure is controlled at 0.1MPa~0.3MPa, so that the enclosure film 40 bulges to form a closed cavity of a preset shape. The height of the cavity can be set according to the required first support adhesive 60 to ensure that the adhesive can be fully filled as much as possible.

[0041] Then, the display panel 10 is bent, bending the bonding area C to the back of the display area A. For example, the second sub-part 22 is bonded to the heat dissipation film 70 via the adhesive layer 95; then, adhesive is injected into the receiving space 50 and completely fills it. For example, a high-precision dispensing machine is used to inject UV adhesive into the molded receiving space 50, with the dispensing speed controlled at 5mm / s to 10mm / s to ensure uniform filling and avoid air bubbles. After dispensing, the display device is placed in a UV curing device and irradiated with ultraviolet light at a wavelength of 365nm for 30s to 60s to completely cure the adhesive, thereby forming a first support adhesive 60 with a stable structure. This effectively solves the defects of existing internal dispensing processes, ensures the filling rate, avoids overflow, and significantly improves the performance of the display device.

[0042] In embodiments of the present invention, such as Figure 7 As shown, after step S106: curing the adhesive to form the first supporting adhesive, the method further includes: S201: A second support adhesive is applied to the side of the bending area away from the display area; S202: The middle frame is overlapped with the second support adhesive; wherein, the middle frame includes a first main body and a second main body connected in sequence, the first main body extends in a direction parallel to the plane where the display area is located, and the second main body extends in a direction perpendicular to the plane where the display area is located; the first main body overlaps with the side of the second support adhesive away from the display area.

[0043] In the specific implementation process, steps S201 to S202 are implemented as follows: After the adhesive is cured to form the first support adhesive 60, the second support adhesive 80 is first bonded to the side of the bending area B away from the display area A; then, the middle frame 91 is overlapped with the second support adhesive 80. In this way, the middle frame 91, the second support adhesive 80, and the first support adhesive 60 effectively support the relevant film layers of the display device, improving the structural stability of the display device. Furthermore, the middle frame 91 includes a first main body 911 and a second main body 912 connected in sequence. The first main body 911 extends in a direction parallel to the plane of the display area A, and the second main body 912 extends in a direction perpendicular to the plane of the display area A; the first main body 911 overlaps with the side of the second support adhesive 80 away from the display area A. Thus, steps S201 to S202 form the structure as shown in the image. Figure 4 The display device shown.

[0044] This invention provides a display device and its manufacturing method. The display device includes a display panel 10, a back film 20, a retaining film 40, and a first support adhesive 60. The display panel 10 includes a display area A and a bending area B. The back film 20 is located on the back side of the display panel 10, and a through groove 30 is formed in the thickness direction of the back film 20, which completely covers the bending area B. In this way, the bonding area C of the display device can be bent to the back side of the display area A through the bending area B, which provides a guarantee for the subsequent narrow bezel design. In addition, the retaining film 40 is located on the side of the bending area B near the display area A, and the retaining film 40 is bonded to the side of the back film 20 near the through groove 30. An accommodating space 50 for inert gas and adhesive to flow between the retaining film 40 and the through groove 30 is formed. Moreover, the first support adhesive 60 is located in the accommodating space 50 and completely fills the accommodating space 50. In this way, during the actual manufacturing process, the accommodating space 50 is filled with inert gas, causing the retaining film 40 to bulge and maintain a specific shape, forming a relatively closed and regularly contoured cavity. This provides stable spatial constraints for subsequent adhesive dispensing, effectively preventing adhesive overflow. Simultaneously, it ensures the maximum curing of the first support adhesive 60, significantly improving its filling rate and saturation, and effectively enhancing the structural stability of the display device. In this way, structural stability is guaranteed while maintaining the narrow bezel of the display device.

[0045] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0046] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A display device, characterized in that, include: The display panel includes a display area and a bending area; A back film is located on the back of the display panel; the back film has a through groove in the thickness direction, and the through groove completely covers the bending area; A retaining film is located on the side of the bending area near the display area, and the retaining film is bonded to the side of the back film near the through groove, forming a space for the flow of inert gas and adhesive between the retaining film and the through groove. The first support adhesive is located within the accommodating space and completely fills the accommodating space.

2. The display device as claimed in claim 1, characterized in that, The display panel further includes a bonding area bent to the back of the display area; the back film includes a first sub-part located on the side of the display area near the enclosure film, a second sub-part located on the side of the bonding area near the enclosure film, and a heat dissipation film located between the first sub-part and the second sub-part; the heat dissipation film and the enclosure film are spaced apart along a direction parallel to the plane of the display area.

3. The display device as claimed in claim 2, characterized in that, Along a direction perpendicular to the plane where the display area is located, the maximum thickness of the first support adhesive is greater than the radius of the bending area and less than the diameter of the bending area.

4. The display device according to any one of claims 1-3, characterized in that, It also includes a second support adhesive located on the side of the bending area away from the display area, and a cover plate located on the light-emitting side of the display panel; the cover plate covers the display panel and extends to the side of the bending area away from the display area; wherein, along a direction parallel to the plane of the cover plate, the side of the second support adhesive away from the display area is flush with the same edge of the cover plate.

5. The display device as claimed in claim 4, characterized in that, It also includes a middle frame, which includes a first main body and a second main body connected in sequence. The first main body extends in a direction parallel to the plane of the cover plate, and the second main body extends in a direction perpendicular to the plane of the cover plate. The first main body and the second support adhesive overlap on the side away from the cover plate.

6. The display device as claimed in claim 4, characterized in that, It also includes a protective adhesive located on the side of the bending area away from the display area, and the protective adhesive is completely covered by the second support adhesive.

7. The display device according to any one of claims 1-3, characterized in that, The material of the enclosure film includes at least one of silicone and PET.

8. The display device according to any one of claims 1-3, characterized in that, The inert gas includes one of nitrogen, argon, helium, and neon.

9. A method for manufacturing a display device as described in any one of claims 1-8, characterized in that, include: The back film is disposed on the back of the display panel; The enclosure film is bonded to the back film on the side near the through groove; The inert gas is filled into the accommodating space formed between the enclosure film and the through groove; The display panel is bent; The adhesive is injected into the accommodating space and completely fills the accommodating space; The adhesive is cured to form the first support adhesive.

10. The method as described in claim 9, characterized in that, After curing the adhesive to form the first supporting adhesive, the method further includes: A second support adhesive is applied to the side of the bending area opposite to the display area. The middle frame is overlapped with the second support adhesive; wherein, the middle frame includes a first main body and a second main body connected in sequence, the first main body extends in a direction parallel to the plane where the display area is located, and the second main body extends in a direction perpendicular to the plane where the display area is located; the first main body overlaps with the side of the second support adhesive away from the display area.

Images