Cover plate structure, manufacturing method of cover plate structure, flexible display screen and electronic device

Abstract

The embodiment of the present application provides a cover plate structure, a manufacturing method of the cover plate structure, a flexible display screen and an electronic device, the cover plate structure comprises an ultrathin glass and a coating structure, the ultrathin glass can be arranged on a flexible panel, the ultrathin glass comprises a first surface and a second surface arranged oppositely, when the ultrathin glass is arranged on the flexible panel, the first surface is connected with the flexible panel; the coating structure is coated on the second surface. The ultrathin glass of the cover plate structure can protect the flexible panel, the coating structure can protect the ultrathin glass, and the ultrathin glass is protected by the coating structure, so that the cover plate structure can be lightened and thinned.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a cover plate structure, a method for manufacturing the cover plate structure, a flexible display screen, and electronic equipment. Background Technology

[0002] With technological advancements, electronic products such as foldable or rollable phones with flexible displays are becoming increasingly common. However, these devices are often bulky and heavy, impacting user experience. Therefore, major manufacturers are dedicated to researching ways to make these products thinner and lighter, with one key research area being the thinner and lighter flexible displays. Summary of the Invention

[0003] This application provides a cover plate structure, a method for manufacturing the cover plate structure, a flexible display screen, and an electronic device, which can make the flexible display screen with the cover plate structure thinner and lighter.

[0004] This application provides a cover plate structure, including:

[0005] Ultra-thin glass can be applied to a flexible panel. The ultra-thin glass includes a first surface and a second surface that are disposed opposite to each other. When the ultra-thin glass is applied to the flexible panel, the first surface is connected to the flexible panel.

[0006] A coating structure is applied to the second surface.

[0007] This application embodiment also provides a method for manufacturing a cover plate structure, the method comprising:

[0008] An ultrathin glass plate is provided, the ultrathin glass plate including a first surface and a second surface disposed opposite to each other, and a coating structure is formed on the second surface by coating.

[0009] A protective film is provided on the first surface, and the protective film is removed when the ultra-thin glass plate is covered onto the flexible panel to connect the first surface with the flexible panel.

[0010] This application embodiment also provides a flexible display screen, including a flexible panel and a cover structure, wherein the cover structure is disposed on the flexible panel, and the cover structure is the cover structure described above.

[0011] This application also provides an electronic device, including a housing and a flexible display screen as described above, wherein the flexible display screen is mounted on the housing.

[0012] This application provides a cover plate structure, a method for manufacturing the cover plate structure, a flexible display screen, and an electronic device. The cover plate structure includes ultra-thin glass and a coating structure. The ultra-thin glass can be applied to a flexible panel. The ultra-thin glass includes a first surface and a second surface disposed opposite to each other. When the ultra-thin glass is applied to the flexible panel, the first surface is connected to the flexible panel. The coating structure is applied to the second surface. The ultra-thin glass of the cover plate structure of this application embodiment can protect the flexible panel, and the coating structure can protect the ultra-thin glass. By protecting the ultra-thin glass through the coating structure, the cover plate structure can be made thinner and lighter, thereby making the flexible display screen thinner and lighter. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the cover plate structure provided in an embodiment of this application.

[0015] Figure 2 Another structural schematic diagram of the cover plate structure provided in the embodiments of this application.

[0016] Figure 3 This is another structural schematic diagram of the cover plate structure provided in the embodiments of this application.

[0017] Figure 4 This is another structural schematic diagram of the cover plate structure provided in the embodiments of this application.

[0018] Figure 5 for Figure 4 The diagram shows another structural view of the ultrathin glass.

[0019] Figure 6 for Figure 4 The diagram shows a structure in which the coating of the display area is covered with a protective film.

[0020] Figure 7 This is a flowchart illustrating the method for manufacturing the cover plate structure provided in an embodiment of this application.

[0021] Figure 8 This is a schematic diagram illustrating the manufacturing steps of the cover plate structure provided in an embodiment of this application.

[0022] Figure 9 Another schematic diagram illustrating the manufacturing steps of the cover plate structure provided in the embodiments of this application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] This application provides a cover plate structure, a manufacturing method, a flexible display screen, and an electronic device. These will be described in detail below.

[0025] Please see Figure 1 , Figure 1 This is a schematic diagram of a cover plate structure provided in an embodiment of this application. This application provides a cover plate structure 100, which can be applied to a flexible display screen as a protective structure for the display panel. The cover plate structure 100 includes ultra-thin glass 110 (UTG) and a coating structure 120. The ultra-thin glass 110 can be applied to the flexible panel (not shown in the figure). The ultra-thin glass 110 includes a first surface 111 and a second surface 112 disposed opposite to each other. When the ultra-thin glass 110 is applied to the flexible panel, the first surface 111 is connected to the flexible panel, and the coating structure 120 is applied to the second surface 112.

[0026] It is understandable that the flexible panel has a display surface that can display images. The cover structure 100 can be connected to the display surface of the flexible panel through the first surface 111 to cover the flexible panel and protect it. Although ultra-thin glass has advantages such as high transmittance, high hardness, and high temperature resistance, it also has problems such as poor impact resistance and easy breakage. Therefore, it is necessary to improve ultra-thin glass so that it can retain its advantages of high transmittance, high hardness, and high temperature resistance while also improving its impact resistance and structural strength. In related technologies, the method of protecting ultra-thin glass by attaching polyimide (PI) material to it with optical adhesive requires attaching optical adhesive to the ultra-thin glass. The process involves first applying an adhesive, then using optical adhesive to attach a PI film to the ultra-thin glass. The double-layer structure of the optical adhesive and PI film is relatively thick, and during the long-term folding and bending of the flexible display, problems such as film layer separation, creases, and edge cracking in the bending area are prone to occur. Therefore, this application forms a coating structure on the ultra-thin glass by coating. Compared to bonding the PI film with optical adhesive, this coating structure is simpler and thinner, protecting the ultra-thin glass and reducing the thickness of the cover plate structure, thus making the cover plate structure thinner and lighter, and consequently, the flexible display thinner and lighter. It also avoids the problem of film layer separation caused by the optical adhesive and PI film, or the optical adhesive and ultra-thin glass.

[0027] The coating material may include acrylate or polyurethane, etc., and the coating structure 120 is applied to the second surface 112 of the ultra-thin glass 110 by a spraying process. The thickness of the coating structure 120 can be controlled within the range of 30µm to 70µm by the spraying process. Compared with the structure that requires at least 100µm using PI film (50µm) and optical adhesive (µm), the coating structure 120 provided in this application embodiment can not only protect the ultra-thin glass, but also make the cover plate structure thinner and lighter, thereby making the flexible display screen thinner and lighter.

[0028] To enhance the protective effect of the coating structure, in some embodiments, the coating structure may include a hardening layer, a transition layer, and a buffer layer stacked sequentially. Please refer to [further details]. Figure 2 , Figure 2This is another schematic diagram of the cover plate structure provided in an embodiment of this application. The coating structure 120 includes a hardened layer 121, a transition layer 122, and a buffer layer 123 stacked sequentially. The buffer layer 123 covers the second surface 112 of the ultra-thin glass 110. The buffer layer 123, transition layer 122, and hardened layer 121 can be formed sequentially on the second surface of the ultra-thin glass 110 using a spraying process. The buffer layer 123 provides cushioning when the ultra-thin glass 110 is impacted. The hardened layer 121 has high structural strength, providing wear and scratch resistance. The transition layer 122 strengthens the bond between the buffer layer and the hardened layer, preventing the stacked structure of the cover plate from easily separating during folding or bending of the flexible panel. It is understood that the total thickness of the hardened layer 121, transition layer 122, and buffer layer 123 can be controlled within the range of 30µm to 70µm using the spraying process.

[0029] Taking the total thickness of the hardening layer 121, transition layer 122 and buffer layer 123 as an example of 30um, the thickness of the hardening layer, transition layer and buffer layer is the same, which is 10um.

[0030] Taking the total thickness of the hardening layer 121, transition layer 122, and buffer layer 123 as an example of 50 μm, the thicknesses of the hardening layer, transition layer, and buffer layer can be different. The thickness of the hardening layer 121 is less than the thickness of the transition layer 122, the thickness of the transition layer 122 is equal to the thickness of the buffer layer 123, the thickness of the hardening layer 121 can be 10 μm, the thickness of the transition layer 122 can be 20 μm, and the thickness of the buffer layer 123 is 20 μm.

[0031] Taking the total thickness of the hardened layer 121, transition layer 122 and buffer layer 123 as an example of 70um, the thickness of the hardened layer 121 is less than the thickness of the transition layer 122, the thickness of the transition layer 122 is less than the thickness of the buffer layer 123, the thickness of the hardened layer 121 can be 10um, the thickness of the transition layer 122 can be 25um, and the thickness of the buffer layer 123 is 35um.

[0032] Compared to structures that require at least 100µm of PI film (50µm) and optical adhesive (µm), and structures where PI film and optical adhesive are easily separated, the coating structure 120 provided in this application not only protects the ultra-thin glass, making the cover plate structure thinner and lighter, and thus making the flexible display screen thinner and lighter, but also avoids the film layer separation of the cover plate structure during the folding or bending of the flexible display screen, thus improving the stability of the cover plate structure.

[0033] To protect the edges of the ultra-thin glass, a coating structure is applied to the edges. Please refer to [link / reference needed]. Figure 3 , Figure 3This is another schematic diagram of the cover plate structure provided in the embodiments of this application. The ultra-thin glass 110 also includes an edge surface 113 that connects the first surface 111 and the second surface 112 respectively, and the coating structure 120 is also coated on the edge surface 113. The edge surface 113 can be the surface of the edge of the ultra-thin glass 110. Due to the structural characteristics of the ultra-thin glass 110, it is easily damaged when it is impacted, especially the edge of the ultra-thin glass. If the edge is impacted by external force, the ultra-thin glass 110 is easily damaged. The coating structure 120 can be coated on both the second surface 112 and the edge surface 113 of the ultra-thin glass 110 by a coating process. The coating structure 120 can be the coating structure as described above. For example, the coating structure 120 can be a coating structure including a hardening layer, a transition layer and a buffer layer stacked in sequence. By protecting the edge of the ultra-thin glass 110 by the coating structure 120, the structural strength of the cover plate structure 100 can be improved, thereby improving the structural strength of the flexible display screen with the cover plate structure 100.

[0034] In some embodiments, the coating structure may not be provided at the edge of the ultrathin glass 110. Instead, a protective film structure can be provided around the edge of the ultrathin glass 110 where the coating structure is provided on the second surface 112 of the ultrathin glass 110 to protect the edge of the ultrathin glass 110. Please continue reading. Figure 4 and Figure 5 , Figure 4 This is another structural schematic diagram of the cover plate structure provided in the embodiments of this application. Figure 5 for Figure 4 This is a schematic diagram of the ultra-thin glass from another perspective. The second surface 112 of the ultra-thin glass 110 may include an edge region 1121 and a display region 1122. The edge region 1121 surrounds the display region 1122. A coating structure 120 is coated on the second surface 112. An edge protection film 130 is disposed on the coating structure 120 on the edge region 1121. The edge protection film 130 is larger than the edge region 1121 and covers the coating structure 120 on the edge region 1121. The edge protection film 130 can protect the edge of the ultra-thin glass 110, improve the structural strength of the cover structure 100, and thus improve the structural strength of the flexible display screen with the cover structure 100. It can be understood that the edge protection film 130 can be a PI film, which is bonded to the coating structure 120 on the edge region 1121 by optical adhesive 140. In some embodiments, after the flexible display screen is fitted with the cover plate structure 100 and the flexible display screen with the cover plate structure 100 fitted is fitted to the electronic device, the electronic device further includes a whole-device decorative frame, which covers the edge protective film. The edge protective film is not visible to the user from the display surface of the electronic device. The decorative frame can be understood as a frame-like structure disposed around the flexible display screen for decoration and fixation.

[0035] Please continue reading. Figure 6, Figure 6 for Figure 4 The diagram illustrates a structure where the coating structure of the display area is covered with a protective film. After the ultra-thin glass 110 is installed on the flexible display screen, a display area protective film 150 needs to be set on the coating structure of the display area 1122. The display area protective film 150 can have additional functions to ensure or improve the display effect of the flexible display screen. For example, the display area protective film 150 can be equipped with anti-glare (AG) or anti-reflection (AR) functions to improve the user's viewing experience. Therefore, the edge protective film 130 does not increase the thickness of the cover structure 100. By setting an edge protective film on the edge of the ultra-thin glass 110 and separating it from the protective film set on the coating structure of the display area 1122, the edge of the ultra-thin glass 110 can be protected, and the user can easily replace the display area protective film 150 covering the coating structure of the display area 1122. This improves the user's requirements for the display effect of the flexible display screen.

[0036] To clearly explain the manufacturing method of the above cover plate structure, please refer to [link / reference needed]. Figure 7 , Figure 7 This is a flowchart illustrating a method for manufacturing a cover plate structure according to an embodiment of this application. An embodiment of this application provides a method for manufacturing a cover plate structure, including:

[0037] 101. An ultrathin glass plate is provided, the ultrathin glass plate including a first surface and a second surface disposed opposite to each other, and a coating structure is formed on the second surface by means of coating.

[0038] Understandably, ultra-thin glass (UTG), with a thickness of only about 30µm, cannot be directly applied to flexible panels as a protective structure. Therefore, the cover structure formed by ultra-thin glass needs to be improved. Specifically, ultra-thin glass includes a first surface and a second surface arranged opposite each other. When ultra-thin glass is applied to a flexible panel, the first surface is connected to the flexible panel, and a coating structure is formed on the second surface through a coating process.

[0039] Flexible panels have a display surface that can display images. A cover plate structure can connect to the display surface of the flexible panel through a first surface to cover and protect the flexible panel. Although ultra-thin glass has advantages such as high transmittance, high hardness, and high temperature resistance, it also has problems such as poor impact resistance and easy breakage. Therefore, it is necessary to improve ultra-thin glass so that it can retain its advantages of high transmittance, high hardness, and high temperature resistance while improving its impact resistance and structural strength. In related technologies, the method of protecting ultra-thin glass by attaching polyimide (PI) material to it with optical adhesive requires attaching optical adhesive to the ultra-thin glass and then using optical adhesive to bond the PI material. The PI film is attached to the ultra-thin glass. The double-layer structure of optical adhesive and PI film is relatively thick. During the long-term folding and bending of the flexible display, problems such as film separation, creases, and edge cracking in the bending area are prone to occur. Based on this, this application improves the cover plate structure by coating a layer structure on the ultra-thin glass. Compared with the method of bonding the PI film with optical adhesive, the film layer structure is simpler and thinner. It can not only protect the ultra-thin glass, but also reduce the thickness of the cover plate structure, making the cover plate structure thinner and lighter, thus making the flexible display thinner and lighter. It can also avoid the problem of film separation caused by optical adhesive and PI film, and optical adhesive and ultra-thin glass.

[0040] Please combine Figure 8 , Figure 8 This is a schematic diagram illustrating the fabrication steps of the cover plate structure provided in this application embodiment. First, ultra-thin glass is attached to a carrier film using an adhesive. Then, a coating structure is applied to the second surface of the ultra-thin glass using a slit spray nozzle. The coating material can include materials such as acrylate or polyurethane. Next, the coating structure is cured by irradiating it with ultraviolet light. The thickness of the coating structure can be controlled within the range of 30µm to 70µm. Compared to structures requiring at least 100µm using PI film (50µm) and optical adhesive (µm), the coating structure provided in this application embodiment not only protects the ultra-thin glass but also allows for a thinner cover plate structure, thereby enabling a thinner flexible display screen. After applying the coating structure to the second surface of the ultra-thin glass, the adhesive and carrier film can be removed.

[0041] In some embodiments, forming a coating structure on the first surface by means of coating includes:

[0042] A buffer layer is formed on the second surface by coating.

[0043] A transition layer is formed in the buffer layer structure by coating.

[0044] A hardened layer is formed in the transition layer by coating.

[0045] Specifically, a buffer layer, a transition layer, and a hardening layer are sequentially formed on the second surface of the ultra-thin glass using a slit spray nozzle in a spraying process. The buffer layer acts as a cushion when the ultra-thin glass is impacted, the hardening layer has high structural strength and provides wear and scratch resistance, and the transition layer strengthens the bond between the buffer layer and the hardening layer, preventing the cover plate structure from easily separating during folding or bending of the flexible panel. It is understood that the total thickness of the hardening layer, transition layer, and buffer layer can be controlled within the range of 30µm to 70µm through the spraying process.

[0046] Taking the total thickness of the hardening layer, transition layer and buffer layer as an example of 30um, the thickness of the hardening layer, transition layer and buffer layer is the same, which is 10um.

[0047] Taking a total thickness of 50µm for the hardening layer, transition layer and buffer layer as an example, the thicknesses of the hardening layer, transition layer and buffer layer can be different. The thickness of the hardening layer is less than the thickness of the transition layer, the thickness of the transition layer is equal to the thickness of the buffer layer, the thickness of the hardening layer can be 10µm, the thickness of the transition layer can be 20µm, and the thickness of the buffer layer is 20µm.

[0048] Taking a total thickness of 70µm for the hardening layer, transition layer and buffer layer as an example, the thickness of the hardening layer is less than the thickness of the transition layer, the thickness of the transition layer is less than the thickness of the buffer layer, the thickness of the hardening layer can be 10µm, the thickness of the transition layer can be 25µm, and the thickness of the buffer layer is 35µm.

[0049] The table below compares the experimental data of PI film + optical adhesive + ultrathin glass with the experimental data of coating structure + ultrathin glass:

[0050]

[0051] Compared to structures that require at least 100µm of PI film (50µm) and optical adhesive (µm), and structures where PI film and optical adhesive are easily separated, the coating structure 120 provided in this application not only protects the ultra-thin glass, making the cover plate structure thinner and lighter, and thus making the flexible display screen thinner and lighter, but also avoids the film layer separation of the cover plate structure during the folding or bending of the flexible display screen, thus improving the stability of the cover plate structure.

[0052] In some embodiments, to protect the edges of the ultrathin glass, a coating structure is also applied to the edge surface. The edge surface can be the surface of the ultrathin glass edge itself. Due to the structural characteristics of ultrathin glass, it is easily damaged upon impact, especially the edges. If the edges are subjected to external force, the ultrathin glass is easily broken. A coating structure can be applied to both the second surface and the edge surface of the ultrathin glass using a coating process. Please continue reading. Figure 9 , Figure 9 This is another schematic diagram illustrating the fabrication steps of the cover plate structure provided in this application embodiment. First, ultra-thin glass is attached to a carrier film using an adhesive. Then, a coating structure is applied to both the second surface and edge surfaces of the ultra-thin glass using a slit spray nozzle. The coating material can include materials such as acrylic or polyurethane, and the coating thickness can be controlled within the range of 30µm to 70µm. Protecting the edges of the ultra-thin glass with the coating structure improves the structural strength of the cover plate structure, thereby enhancing the structural strength of the flexible display screen with the cover plate structure. After applying the coating structure to the second surface of the ultra-thin glass, the adhesive and carrier film can be removed.

[0053] 102, A protective film is provided on the first surface, and the protective film is removed when the ultra-thin glass plate is covered on the flexible panel to connect the first surface with the flexible panel.

[0054] After removing the adhesive and carrier film of the ultra-thin glass, a protective film is set on the first surface of the ultra-thin glass. The protective film can be a release film, which facilitates the factory transportation and removal of the cover structure. When the cover structure needs to be assembled onto the flexible panel later, the protective film set on the first surface can be removed, and the first surface can be aligned with the display face of the flexible panel to connect the first surface to the flexible panel, thus completing the assembly of the cover structure.

[0055] It is understandable that the thicker the coating structure at the edge of ultra-thin glass, the better. However, due to limitations in the spraying process, it is impossible to form a wide and thick coating structure at the edge of ultra-thin glass. Therefore, in some embodiments, an edge protection film can be set at the edge of the ultra-thin glass to protect the edge of the coated structure. The cover plate structure produced by the above-described cover plate manufacturing method can be a cover plate structure with a coating structure at the edge of ultra-thin glass (e.g., Figure 8 (as shown) and cover plate structures with no coating structure on the edge of ultra-thin glass (such as...) Figure 9 As shown), when the edge of the ultra-thin glass does not have a coating structure, a protective film structure is set around the edge of the ultra-thin glass where a coating structure is set on the second surface to protect the edge of the ultra-thin glass. Please refer to... Figure 4 and Figure 5The second surface 112 of the ultrathin glass 110 may include an edge region 1121 and a display region 1122. The edge region 1121 surrounds the display region 1122. A coating structure 120 is coated on the second surface 112. An edge protection film 130 is disposed on the coating structure 120 on the edge region 1121. The edge protection film 130 is larger than the edge region 1121 and covers the coating structure 120 on the edge region 1121. For example, the edge protection film 130 may extend beyond the edge region 1121 by a length a, where a can be 200 μm. The edge protection film 130 can protect the edge of the ultrathin glass 110, improve the structural strength of the cover structure 100, and thus improve the structural strength of the flexible display screen with the cover structure 100. It is understood that the edge protection film 130 can be a PI film, bonded to the coating structure 120 on the edge region 1121 by optical adhesive 140. It is understandable that after the flexible display screen is assembled with the cover plate structure 100 and then mounted onto the electronic device, the electronic device also has a decorative frame that covers the edge protective film. The edge protective film is not visible to the user from the display surface of the electronic device. Please refer to... Figure 6 After the ultra-thin glass 110 is installed over the flexible display screen, a display area protective film 150 needs to be set on the coating structure of the display area 1122. The display area protective film 150 can have additional functions to ensure or improve the display effect of the flexible display screen. For example, the display area protective film 150 can be equipped with anti-glare (AG) or anti-reflection (AR) functions to improve the user's viewing experience. Therefore, the edge protective film 130 does not increase the thickness of the cover structure 100. By setting an edge protective film on the edge of the ultra-thin glass 110 and separating it from the protective film set on the coating structure of the display area 1122, the edge of the ultra-thin glass 110 can be protected, and the user can easily replace the display area protective film 150 covering the coating structure of the display area 1122. This improves the user's requirements for the display effect of the flexible display screen.

[0056] Understandably, if the ultra-thin glass of the cover plate structure forms a coating structure at its edges using the aforementioned manufacturing method, a protective film with additional functions can be directly applied to the coating structure to ensure or improve the display effect of the flexible display screen. For example, anti-glare (AG) or anti-reflection (AR) functions can be added to enhance the user experience. Since the edges of the ultra-thin glass are already protected by the coating structure, there is no need to separate the protective film with additional functions to form the aforementioned edge protection film and display area protection film.

[0057] The cover plate structure manufacturing method provided in this application embodiment can manufacture the cover plate structure as described above. By replacing the protective structure of PI film + optical adhesive with a coating structure, the coating structure provided in this application embodiment can not only protect the ultra-thin glass and make the cover plate structure thinner and lighter, thereby making the flexible display screen thinner and lighter, but also prevent the film layer from separating during the folding or bending of the flexible display screen, and protect the edge of the ultra-thin glass from losing the edge characteristics of the ultra-thin glass, thereby improving the stability of the cover plate structure.

[0058] This application embodiment also provides a flexible display screen, including a flexible panel and the aforementioned cover structure, with the cover structure covering the flexible panel to protect it. The flexible display screen may further include a P-Film support layer, a C-PNL buffer layer, a Pattem carbon fiber layer, and a TPU protective layer stacked together. The flexible panel is disposed on the P-Film support layer, which is located between the flexible panel and the C-PNL buffer layer. The P-Film support layer provides support for the flexible panel. The C-PNL buffer layer connects the P-Film support layer and the Pattem carbon fiber layer, providing cushioning when the flexible display screen bends or folds. The Pattem carbon fiber layer provides support for the flexible panel, and the TPU protective layer provides waterproof and dustproof protection. It is understood that the cover structure is disposed on the side of the flexible panel opposite to the P-Film support layer, and the cover structure can be connected to the flexible panel using adhesives such as optical adhesives.

[0059] It should be noted that the stacked structure of the flexible display screen provided in this application embodiment is merely exemplary, and the flexible display screen may also include other stacked structures. This application embodiment does not limit the stacked structure of the flexible display screen.

[0060] The flexible display screen provided in this application, by assembling the aforementioned cover plate structure, has a simpler structure and thinner thickness compared to the method of bonding the PI film with optical adhesive. This not only protects the ultra-thin glass but also reduces the thickness of the cover plate structure, making it lighter and thinner, thereby enabling a lighter and thinner flexible display screen. Furthermore, it avoids the problem of film layer separation that can easily occur between the optical adhesive and the PI film, or between the optical adhesive and the ultra-thin glass. In addition, by protecting the edges of the ultra-thin glass, the strength of the cover plate structure can be further improved, thereby increasing the structural strength of the flexible display screen.

[0061] This application embodiment also provides an electronic device, including a housing and the aforementioned flexible display screen, the flexible display screen being mounted on the housing. The electronic device may further include a circuit board, a battery, and functional components. The housing can form a receiving space, within which the circuit board, battery, and functional components are all disposed. The receiving space is also used to accommodate the aforementioned flexible display screen. The housing also includes a mid-frame, which provides support for the electronic components or functional components in the electronic device, allowing them to be mounted together. Functional components of the electronic device, such as a camera, receiver, and battery, can be mounted on the mid-frame or circuit board for fixation. It is understood that the material of the mid-frame may include metal or plastic. The circuit board can be mounted on the mid-frame. The circuit board can be the motherboard of the electronic device. The circuit board may integrate one or more functional components such as a microphone, speaker, receiver, headphone jack, accelerometer, gyroscope, and processor. Simultaneously, the flexible display screen can be electrically connected to the circuit board to control the display of the flexible display screen through the processor on the circuit board. Both the flexible display screen and the camera can be electrically connected to the processor. The battery can be mounted on the mid-frame. Simultaneously, the battery is electrically connected to the circuit board to power the electronic device. The circuit board may contain a power management circuit. This circuit distributes the voltage supplied by the battery to the various electronic components within the device.

[0062] The electronic devices provided in this application embodiment may be computing devices such as laptop computers, computer monitors containing embedded computers, tablet computers, cellular phones, media players, or other handheld or portable electronic devices, smaller devices (such as wristwatches, hanging devices, earphones or handsets, devices embedded in glasses or other devices worn on a user's head, or other wearable or micro-devices), televisions, computer monitors that do not contain embedded computers, gaming devices, navigation devices, embedded systems (such as systems in which electronic devices with displays are installed in kiosks or automobiles), devices that implement the functions of two or more of these devices, or other electronic devices with flexible displays.

[0063] The electronic device provided in this application, with a flexible display screen equipped with the aforementioned cover plate structure, offers a simpler and thinner cover plate structure compared to flexible display screens with cover plate structures formed by bonding PI films with optical adhesive. This design not only protects the ultra-thin glass but also reduces the thickness of the cover plate structure, resulting in a thinner and lighter cover plate structure, which in turn makes the flexible display screen and consequently, the electronic device itself thinner and lighter. Furthermore, protecting the edges of the ultra-thin glass further enhances the strength of the cover plate structure and the flexible display screen, thereby improving the overall structural strength and lifespan of the electronic device.

[0064] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0065] The cover plate structure, the method for manufacturing the cover plate structure, the flexible display screen, and the electronic device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. At the same time, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A cover structure, characterized by The application relates to a cover plate structure of a flexible display screen, which comprises the following steps: a super-thin glass is provided, the super-thin glass comprises a first surface and a second surface arranged oppositely, and the first surface is connected with a flexible panel when the super-thin glass is covered on the flexible panel; a coating structure is coated on the second surface, the coating structure comprises a hardening layer, a transition layer and a buffer layer which are stacked in sequence, the buffer layer covers the second surface, and the total thickness of the hardening layer, the transition layer and the buffer layer is between 30 um and 70 um; wherein the second surface comprises an edge area and a display area, the edge area is arranged around the display area, an edge protection film is arranged on the coating structure on the edge area, the size of the edge protection film is larger than the size of the edge area, and a display area protection film is arranged on the coating structure on the display area, and the display area protection film is separated from the edge protection film.

2. The cover plate structure according to claim 1, wherein the thickness of the hardening layer, the transition layer and the buffer layer is the same; or the thickness of the hardening layer is smaller than the thickness of the transition layer, and the thickness of the transition layer is smaller than or equal to the thickness of the buffer layer.

3. A method of manufacturing a cover plate structure, characterized by, The application further relates to a method for manufacturing the cover plate structure of the flexible display screen, which comprises the following steps: a super-thin glass plate is provided, the super-thin glass plate comprises a first surface and a second surface arranged oppositely, a buffer layer is formed on the second surface by coating, a transition layer is formed on the buffer layer structure by coating, and a hardening layer is formed on the transition layer by coating, and the total thickness of the hardening layer, the transition layer and the buffer layer is between 30 um and 70 um; a protection film is arranged on the first surface, and the protection film is removed to connect the first surface with the flexible panel when the super-thin glass plate is covered on the flexible panel; wherein the second surface comprises an edge area and a display area, the edge area is arranged around the display area, an edge protection film is arranged on the coating structure on the edge area, the size of the edge protection film is larger than the size of the edge area, and a display area protection film is arranged on the coating structure on the display area, and the display area protection film is separated from the edge protection film.

4. A flexible display screen, characterized by The application further relates to a flexible display screen which comprises a flexible panel and the cover plate structure of the flexible display screen.

5. An electronic device, comprising: The application further relates to a flexible display screen which comprises a flexible panel and the cover plate structure of the flexible display screen.

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