Flexible display screen and electronic device

Abstract

The application provides a flexible display screen and an electronic device. The flexible display screen comprises a display module, a support and a first buffer film layer. The support is arranged on one side of the display module in a stacked manner. The support comprises a first support part, a second support part and a bending part connected between the first support part and the second support part. The bending part can be bent under force. The first buffer film layer is arranged between the display module and the support to connect the display module and the support. The first buffer film layer is provided with one or more first hole structures. The flexible display screen provided by the application is provided with the first hole structure in the first buffer film layer between the support and the display module. The resilience of the first buffer film layer can be reduced. The first buffer film layer itself can contain a small-thickness adhesive layer. Alternatively, small-thickness connecting adhesive layers are additionally arranged on both sides of the first buffer film layer. The overall thickness of the flexible display screen can be reduced. The overall thickness of the electronic device can be reduced. The electronic device is facilitated to be light and thin.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a flexible display screen and electronic device. Background Technology

[0002] With the continuous development of smart terminal products, the traditional method of upgrading products through hardware iterations has gradually reached its bottleneck. The user experience between new and old terminal products is not significantly different. As the smart terminal product market gradually becomes saturated, simple upgrades through hardware can no longer meet user needs. The emergence of foldable terminal devices has opened up entirely new usage scenarios, improved the operability of terminals, and satisfied consumers' pursuit of large displays, making them increasingly popular. Therefore, foldable terminals represent the main development direction for the next generation of terminal devices.

[0003] Flexible displays are an important component of foldable display terminals. In related technologies, the thickness of current flexible displays is approaching its limit, making it difficult to make them thinner. This makes it difficult to reduce the overall thickness of foldable phones. Currently, mature foldable phones on the market have a relatively large overall thickness after folding, which affects the user's handling experience. Summary of the Invention

[0004] This application provides a flexible display screen and an electronic device to reduce the thickness of the flexible display screen in the related technology, which is beneficial to the thinning and lightening of electronic devices.

[0005] In a first aspect, this application provides a flexible display screen and a display module;

[0006] A support member, stacked on one side of the display module, includes a first support portion, a second support portion, and a bent portion connecting the first support portion and the second support portion, the bent portion being bendable under force; and

[0007] A first buffer film layer is disposed between the display module and the support member to connect the display module and the support member. The first buffer film layer has one or more first hole structures.

[0008] Secondly, this application also provides an electronic device, including a housing and a flexible display screen disposed on the housing, wherein the flexible display screen is the flexible display screen as described above.

[0009] In this application, a first buffer film layer is provided between the display module and the support component of the flexible display screen. This allows the support component and the display module to be connected to the first buffer film layer separately, rather than directly connected. The first buffer film layer provides a better connection between the display module and the support component, enhancing the connection stability. Simultaneously, as the first buffer film layer is an intermediate layer, it also acts as a buffer, protecting the display module. When the electronic device is subjected to strong vibrations or drops, the first buffer film layer can absorb most of the vibration and impact force, preventing excessive stress and damage to the display module.

[0010] Furthermore, by providing a first hole structure in the first buffer film layer, the rebound force of the first buffer film layer can be reduced. Therefore, the first buffer film layer itself can contain a thinner adhesive layer, or a thinner connecting adhesive layer can be provided on both sides of the first buffer film layer. This can ensure the adhesion between the first buffer film layer and the support and display film layer, thereby reducing the overall thickness of the flexible display screen. Consequently, when the flexible display screen is applied to electronic devices, the overall thickness of the electronic devices can be reduced, which is beneficial for making the electronic devices thinner and lighter. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a first schematic diagram of an electronic device provided in an embodiment of this application.

[0013] Figure 2 This is a second schematic diagram of an electronic device according to an embodiment of this application.

[0014] Figure 3 This is a first schematic diagram of a flexible display screen of an electronic device according to an embodiment of this application.

[0015] Figure 4 This is a schematic diagram of the first connection between the support member and the first buffer film layer in an embodiment of this application.

[0016] Figure 5 This is a partial structural diagram of the bent portion of the support member in an embodiment of this application, viewed from above.

[0017] Figure 6 This is a schematic diagram of the second connection between the support member and the first buffer membrane layer in an embodiment of this application.

[0018] Figure 7This is a schematic diagram of the third connection between the support member and the first buffer membrane layer in an embodiment of this application.

[0019] Figure 8 This is a schematic diagram of the fourth connection between the support member and the first buffer membrane layer in an embodiment of this application.

[0020] Figure 9 This is a schematic diagram of the fifth connection between the support member and the first buffer membrane layer in an embodiment of this application.

[0021] Figure 10 This is a schematic diagram showing the connection between the first buffer membrane layer and the support member when the first hole structure is not provided in the embodiment of this application.

[0022] Figure 11 This is a sixth connection diagram between the support member and the first buffer membrane layer in an embodiment of this application.

[0023] Figure 12 This is a schematic diagram of the seventh connection between the support member and the first buffer membrane layer in an embodiment of this application. Detailed Implementation

[0024] The following will refer to the appendices in the embodiments of this application. Figure 1 To be continued Figure 12 The technical solutions in the embodiments of this application are clearly and completely described. 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.

[0025] In the description of this application, it should be understood that terms such as “first” and “second” are used only to distinguish similar objects and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0026] With the continuous development of smart terminal products, the traditional method of upgrading products through hardware iterations has gradually reached its bottleneck. The user experience between new and old terminal products is now largely similar. As the smart terminal product market becomes increasingly saturated, simple hardware upgrades can no longer meet user needs. The emergence of foldable terminal devices has opened up entirely new usage scenarios, improved the operability of the terminal, and satisfied consumers' desire for large displays, making them increasingly popular. Therefore, foldable terminals represent a major development direction for next-generation terminal devices. Flexible displays are a crucial component of foldable display terminals. Currently, the thickness of flexible displays is nearing its limit, making it difficult to further reduce their thickness. This results in a significant challenge in reducing the overall thickness of foldable phones. Currently, mature foldable phones on the market have a relatively large overall thickness when folded, affecting the user's handling experience.

[0027] This application provides a flexible display screen and an electronic device. The flexible display screen can achieve a smaller thickness. When the flexible display screen is applied to an electronic device, the overall thickness of the electronic device can be reduced, which is beneficial to the thinning and lightening of the electronic device.

[0028] As used herein, “electronic device” (or simply “terminal”) includes, but is not limited to, means configured to receive / transmit communication signals via a wired connection (such as via a Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital Cable, Direct Cable Connection, and / or another data connection / network) and / or via a wireless interface (e.g., for cellular networks, Wireless Local Area Networks (WLANs), Digital Television Networks such as DVB-H networks, Satellite Networks, AM-FM Broadcast Transmitters, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a “wireless communication terminal,” a “wireless terminal,” or a “mobile terminal.” Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that may combine cellular radiotelephone with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or handheld receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0029] Please refer to Figure 1 and Figure 2 , Figure 1 This is a first schematic diagram of an electronic device provided in an embodiment of this application. Figure 2 This is a second schematic diagram of an electronic device according to an embodiment of this application. The electronic device 10 provided in this embodiment can be a foldable screen phone, a foldable tablet computer, a foldable personal digital assistant, a foldable e-book reader, etc. This embodiment takes a foldable screen phone as an example for the following description. The electronic device 10 may include components such as a housing 100, a flexible display screen 200, and a motherboard 300.

[0030] The flexible display screen 200 is disposed on the housing 100 to form the display surface of the electronic device 10 for displaying images, text, and other information. The flexible display screen 200 may include flexible display screens of the type such as Liquid Crystal Display (LCD) or Organic Light-Emitting Diode (OLED).

[0031] The housing 100 forms the external outline of the electronic device 10 to accommodate the electronic devices and functional components of the electronic device 10, while also providing a seal and protection for the electronic devices and functional components inside the electronic device 10. For example, the battery, motherboard 300, sensors, and other electronic devices and functional components of the electronic device 10 can be housed inside the housing 100. The housing 100 may include a middle frame 110 and a back cover 120.

[0032] The middle frame 110 can be a thin plate or sheet structure, or a hollow frame structure. The middle frame 110 provides support for the electronic devices or functional components in the electronic device 10, allowing them to be mounted together. For example, the middle frame 110 can have grooves, protrusions, or other structures to facilitate the mounting of the electronic devices or functional components. It is understood that the material of the middle frame 110 can include metal or plastic. The middle frame 110 has opposing first and second sides, with the flexible display screen 200 and the back cover 120 respectively disposed on the first and second sides of the middle frame 110.

[0033] The back cover 120, together with the mid-frame 110 and the flexible display screen 200, seals the electronic components and functional parts of the electronic device 10 inside the electronic device 10, thereby protecting the electronic components and functional parts of the electronic device 10. Understandably, the material of the back cover 120 may also include metal or plastic.

[0034] The motherboard 300 is housed inside the housing 100. For example, the motherboard 300 can be mounted on the mid-frame 110 of the housing 100 for fixation, and sealed inside the electronic device 10 by the rear cover 120. The motherboard 300 may integrate one or more functional components such as a processor, headphone jack, accelerometer, gyroscope, and motor. Simultaneously, the flexible display screen 200 can be electrically connected to the motherboard 300 to control the display of the flexible display screen 200 via the processor on the motherboard 300.

[0035] For foldable phones, to achieve the folding function, the mid-frame 110 can include multiple frames, which can move relative to each other to fold the flexible display 200. For an example, please refer to... Figure 1 The middle frame 110 may include a first frame 111 and a second frame 112. The first frame 111 is movable relative to the second frame 112 so that at least a portion of the second frame 112 overlaps with the first frame 111. The flexible display screen 200 is disposed and connected to the same side of the first frame 111 and the second frame 112, and the flexible display screen 200 is used to move with the relative movement of the first frame 111 and the second frame 112. Figure 2As shown, the rear cover 120 may include a first cover 121 and a second cover 122. The first cover 121 is connected to the first frame 111 to cover the first frame 111, and the second cover 122 is connected to the second frame 112 to cover the second frame 112.

[0036] The first frame 111 can be rotatably connected to the second frame 112 via a pivot mechanism (not shown), allowing the first frame 111 and the second frame 112 to rotate relative to each other around the pivot mechanism, thereby causing the flexible display screen 200 to bend. For example, the first frame 111 and the second frame 112 can rotate within an angle range of 0° to 180°. When the angle between the first frame 111 and the second frame 112 is less than 180°, the flexible display screen 200 is in a bent state; when the angle between the first frame 111 and the second frame 112 is equal to 180°, the flexible display screen 200 is in a flat state.

[0037] The flexible display screen 200 is an important component of foldable screen phones. To ensure that the flexible display screen 200 can display normally and meet the requirements of frequent bending, the structure of the flexible display screen 200 needs to be designed.

[0038] Please refer to Figure 3 and Figure 4 , Figure 3 This is a first schematic diagram of a flexible display screen for an electronic device provided in an embodiment of this application. Figure 4 This is a schematic diagram illustrating the first connection between the support member and the first buffer film layer according to an embodiment of this application. In this embodiment, the flexible display screen 200 includes a display module 210, a support member 220, and a first buffer film layer 230. The support member 220 is stacked on one side of the display module 210 and includes a first support portion 221, a second support portion 222, and a bending portion 223 connecting the first support portion 221 and the second support portion 222. The bending portion 223 can be bent under force. The first buffer film layer 230 is disposed between the display module 210 and the support member 220 to connect the display module 210 and the support member 220.

[0039] The display module 210 includes a substrate 211, a display layer, and an encapsulation layer 214 stacked sequentially. The substrate 211 is a flexible substrate, and its material can be polyethylene terephthalate (PET) or polyimide (PI). The display layer includes a circuit structure layer 212 and an organic light-emitting layer 213. The circuit structure layer 212 is etched onto the substrate 211, and the organic light-emitting layer 213 can be deposited onto the circuit structure layer 212. The encapsulation layer 214 isolates the circuit structure layer 212 and the organic light-emitting layer 213 from the external environment to prevent external moisture and oxygen from entering the display module 210 and affecting the display of the flexible display screen 200.

[0040] Understandably, the support member 220 is used to support the display module 210 to control the bending posture of the display module 210 so that the flexible display screen 200 can be bent into the bending state required by the design. For example, in some embodiments, the display module 210 includes a first region, a second region, and a third region connected in sequence. The first support portion 221 of the support member 220 can be connected to the first region, the second support portion 222 can be connected to the second region, and the bending portion 223 can be connected to the third region, so that the first region and the third region are non-bending regions, while the second region is a bendable region. This allows the flexible display screen 200 to bend naturally into a shape such as a "water droplet" in conjunction with the rotating structure (e.g., a pivot mechanism) of the electronic device 10, thereby reducing creases in the flexible display screen 200 and improving its appearance. Therefore, the first support portion 221 and the second support portion 222 need to have sufficient rigidity and strength so that when the electronic device 10 is folded, the area of ​​the display module 210 corresponding to the first support portion 221 and the second support portion 222 will not be bent. The bending portion 223 has good flexibility and is easy to bend and deform so that the display module 210 bends in sections corresponding to the bending portion 223, so that the flexible display screen 200 is bent into the shape required by the design.

[0041] Therefore, in order to give the first support portion 221 and the first support portion 222 good rigidity and strength to better support the display module 210, the support member 220 can be made of metal material as a whole. In order to give the bending portion 223 good flexibility, the structure of the bending portion 223 can be designed. For example, through holes can be provided in the area of ​​the support member 220 corresponding to the bending portion 223, or the thickness of the bending portion 223 can be designed to be less than the thickness of the first support portion 221 and the second support portion 222, thereby reducing the rigidity of the bending portion 223 and making it easier for the bending portion 223 to bend under stress.

[0042] Since the support member 220 and the display module 210 are manufactured using different processes, a first buffer film layer 230 is provided between the display module 210 and the support member 220. This allows the support member 220 and the display module 210 to be connected to the first buffer film layer 230, rather than directly connecting the support member 220 to the display module 210. The first buffer film layer 230 better connects the display module 210 and the support member 220, enhancing the connection stability between them. Simultaneously, as the first buffer film layer 230 is an intermediate layer, it also acts as a buffer, protecting the display module 210. For example, when the electronic device 10 is subjected to strong vibrations or drops, the first buffer film layer 230 can absorb most of the vibration and impact force, preventing the display module 210 from being damaged due to excessive force.

[0043] The first buffer film layer 230 can also prevent dust. When the bending part 223 is provided with a through hole structure, during the folding process of the electronic device 10, dust inside and outside the electronic device 10 can easily enter through the through hole structure of the bending part 223. Therefore, the first buffer film layer 230 can isolate the display module 210 from the environment outside the display module 210, prevent dust entering from the bending part 223 from entering the display module 210, and avoid affecting the normal display of the display module 210.

[0044] Specifically, the first buffer film layer 230 connects the display module 210 and the support member 220. This first buffer film layer 230 can be made of a material with strong adhesion; for example, it can contain a highly adhesive layer, allowing direct connection between the first buffer film layer 230 and the support member 220 and the display module 210. Alternatively, additional adhesive layers can be provided on both sides of the first buffer film layer 230, allowing indirect connection between the first buffer film layer 230 and the support member 220 and the display module 210 via these adhesive layers.

[0045] Understandably, in order to accommodate the bending of the flexible display screen 200, the first buffer film layer 230 also needs to have good flexibility so that it can be easily bent under stress. For example, the first buffer film layer 230 can be made of flexible material.

[0046] It should be noted that for some components made of flexible or elastic materials, when they are bent and deformed by external force, due to their inherent material properties, they will generate a rebound force that drives the component to return to its original shape. For the first buffer film layer 230, when it bends and deforms along with the display module 210, it will also generate a certain rebound force. To ensure the reliability of the connection between the first buffer film layer 230 and the display module 210 and the support member 220, the first buffer film layer 230 itself needs to contain an adhesive layer of sufficient thickness (or an additional adhesive layer of sufficient thickness needs to be provided on both sides of the first buffer film layer 230) to improve the adhesion between the first buffer film layer 230 and the support member 220 and the display module 210, preventing delamination between the first buffer film layer 230 and the support member 220 and the display module 210 due to the rebound of the first buffer film layer 230, which could lead to display abnormalities in the flexible display screen 200.

[0047] The overall thickness of the flexible display screen 200 is the sum of the thicknesses of the display module 210, the support member 220, and the first buffer film layer 230 (when indirectly connected via a connecting adhesive layer, the thickness of the connecting adhesive layer is also included). To reduce the overall thickness of the flexible display screen 200, in this embodiment, such as... Figure 4 As shown, the first buffer membrane layer 230 is provided with one or more (including two or more) first pore structures 230a.

[0048] In this embodiment, by providing a first hole structure 230a in the first buffer film layer 230, the rebound force of the first buffer film layer 230 can be reduced. Therefore, the first buffer film layer 230 itself can contain a thinner adhesive layer, or a thinner connecting adhesive layer can be provided on both sides of the first buffer film layer 230. This can ensure the adhesion between the first buffer film layer 230 and the support member 220 and the display film layer, thereby reducing the overall thickness of the flexible display screen 200 and the overall thickness of the electronic device 10, which is beneficial for the thinning and lightening of the electronic device 10.

[0049] For example, please continue to refer to Figure 4 The first buffer film layer 230 includes a main body layer 231, a first connecting layer 232, and a second connecting layer 233. The main body layer 231 has a first side (not shown) and a second side (not shown) opposite each other, and the main body layer 231 is provided with a first hole structure 230a. The first connecting layer 232 is disposed on the first side and is used to connect the main body layer 231 and the support member 220. The second connecting layer 233 is disposed on the second side and is used to connect the main body layer 231 and the display module 210.

[0050] Understandably, the main body layer 231 is used to form the main body of the first buffer film layer 230. The material of the main body layer 231 can be a flexible material so that the main body layer 231 can be easily bent and deformed to cooperate with the bending of the display module 210 and the support member 220, so that the flexible display screen 200 can be bent into the shape required by the design. Moreover, the main body layer 231 is a flexible material that can absorb the impact and vibration of the electronic device 10, thereby achieving the buffer protection of the display module 210.

[0051] A first connecting layer 232 is disposed on a first side, and is used to connect the main body layer 231 and the support member 220, that is, the first side of the main body layer 231 is connected to the support member 220 through the first connecting layer 232. A second connecting layer 233 is disposed on a second side, and is used to connect the main body layer 231 and the display module 210, that is, the second side of the main body layer 231 is connected to the display module 210 through the second connecting layer 233. Therefore, the first connecting layer 232 and the second connecting layer 233 need to have strong adhesion to ensure that the main body layer 231 is firmly connected to the support member 220 and the display module 210.

[0052] By providing the first hole structure 230a in the main body layer 231, the resilience of the main body layer 231 can be reduced. This allows the first connecting layer 232 to be designed with a smaller thickness, thus firmly connecting the main body layer 231 to the support member 220. Similarly, by designing the second connecting layer 233 with a smaller thickness, the main body layer 231 can be firmly connected to the display module 210, preventing the first buffer film layer 230 from delaminating with the support member 220 and the display module 210. Therefore, by providing the first hole structure 230a in the main body layer 231, the first connecting layer 232 and the second connecting layer 233 can be designed with smaller thicknesses, reducing the thickness of the first buffer film layer 230, thereby reducing the overall thickness of the flexible display screen 200, and consequently reducing the thickness of the electronic device 10.

[0053] Furthermore, it should be noted that by providing the first hole structure 230a in the main body layer 231, the flexibility of the main body layer 231 can be further enhanced, making the main body layer 231 easier to bend under force, thereby reducing the rebound force of the first buffer film layer 230 while having better flexibility.

[0054] The first connecting layer 232 is used to connect the main body layer 231 to the support member 220, and the second connecting layer 233 is used to connect the main body layer 231 to the display module 210. The first connecting layer 232 and the second connecting layer 233 mainly serve a connecting function. In order to reduce the thickness of the first buffer film layer 230, the thickness of the first connecting layer 232 and the second connecting layer 233 is less than the thickness of the main body layer 231.

[0055] By setting a first hole structure 230a in the main body layer 231, and after multiple tests, the thickness of the first connecting layer 232 can be designed to be 10-15 micrometers while ensuring a strong connection. Similarly, the thickness of the second connecting layer 233 can be designed to be 10-15 micrometers. Compared to the adhesive layer in related technologies (typically 20 micrometers), this can be reduced by 5-10 micrometers, thus reducing the overall thickness of the flexible display screen by 5-10 micrometers.

[0056] Optionally, the material of the main body layer 231 may be polyimide (PI), polyethylene terephthalate (PET), or thermoplastic polyurethane (UPT).

[0057] The materials of the first connecting layer 232 and the second connecting layer 233 can be acrylic or silicone.

[0058] Optionally, to facilitate bending of the support member 220 at the bend 223, please refer to [further details]. Figure 4 The bending portion 223 is provided with a plurality of third hole structures 223a that penetrate through the thickness direction of the bending portion 223. By providing a plurality of third hole structures 223a in the bending portion 223, and by providing the third hole structures 223a through the bending portion 223 along the thickness direction, the rigidity of the bending portion 223 can be reduced and the flexibility of the bending portion 223 can be enhanced. Furthermore, the third hole structures 223a can reduce the bending stress generated when the bending portion 223 is bent, making the bending portion 223 easier to bend under force.

[0059] To facilitate bending of the support member 220 into the desired bending posture, the third hole structure 223a can be strip-shaped. For an example, please refer to... Figure 5 , Figure 5 This is a partial structural diagram of the bent portion of the support member provided in the embodiments of this application, viewed from above. Multiple third hole structures 223a are arranged in an array, meaning that multiple rows of the multiple third hole structures 223a are spaced apart along the bending direction of the bent portion 223, and multiple columns are spaced apart along the bending axis direction of the bent portion 223. This not only reduces the rigidity of the bent portion 223 but also easily ensures the consistency of the bends throughout the bent portion 223, making it easier for the bent portion 223 to bend according to the designed bending posture, while also ensuring the connection performance of the bent portion 223 itself. It should be noted that the embodiments of this application include... Figure 5 The third hole structure 223a is only used as an example; the shape and arrangement of the third hole structure 223a can also be adopted in other ways.

[0060] The width of each third hole structure 223a can be 0.5-1.5 mm, and the spacing between two adjacent rows of third hole structures 223a can be 0.5-1.0 mm.

[0061] However, when the bending portion 223 is provided with the third hole structure 223a, since the adhesive layer forming the first connecting layer 232 has a certain fluidity, the adhesive layer forming the first connecting layer 232 will sink into the third hole structure 223a. The first connecting layer 232 will cause the main body layer 231 and the second connecting layer 233 to sink, causing the display module 210 to sink as well. This will cause the area of ​​the display module 210 corresponding to the bending portion 223 to have a poor appearance film imprint problem (that is, when viewed from the surface of the flexible display screen 200, the bending area shows the outline imprint of the third hole structure 223a), affecting the appearance quality and display effect of the flexible display screen 200.

[0062] To avoid the above problems, for example, such as Figure 4 As shown, the first connecting layer 232 includes a first sub-connecting layer 2321 connected to the first support portion 221 and a second sub-connecting layer 2322 connected to the second support portion 222. A second hole structure 232a is provided between the first sub-connecting layer 2321 and the second sub-connecting layer 2322, penetrating the thickness direction of the first connecting layer 232. The projection of the second hole structure 232a on the support member 220 is located at the bending portion 223.

[0063] That is, the first connecting layer 232 includes a first sub-connecting layer 2321 and a second sub-connecting layer 2322, the first sub-connecting layer 2321 and the second sub-connecting layer 2322 are spaced apart, and a second hole structure 232a is formed between the first sub-connecting layer 2321 and the second sub-connecting layer 2322.

[0064] Understandably, to ensure that the first sub-connecting layer 2321 and the second sub-connecting layer 2322 are spaced apart, and the second hole structure 232a is a single through hole, multiple third hole structures 223a are connected to the second hole structure 232a. The area of ​​the second hole structure 232a can be equal to or slightly larger than the area of ​​the bend 223, so that the projection of the second hole structure 232a onto the support member 220 is located at the bend 223.

[0065] Therefore, by setting the first connecting layer 232 to include a first sub-connecting layer 2321 and a second sub-connecting layer 2322 spaced apart, the first sub-connecting layer 2321 is connected to the first support portion 221, and the second sub-connecting layer 2322 is connected to the second support portion 222. A second hole structure 232a corresponding to the bending portion 223 is provided between the first sub-connecting layer 2321 and the second sub-connecting layer 2322. Thus, the side of the bending portion 223 near the main body layer 231 is left empty and without the first connecting layer 232. In this way, the first connecting layer 232 will not sink into the third hole structure 223a of the bending portion 223, thereby preventing the first connecting layer 232 from causing the main body layer 231 and the second connecting layer 233 to sink. This can prevent the display module 210 from sinking together, avoid causing appearance film marks in the area of ​​the display module 210 corresponding to the bending portion 223, and avoid affecting the appearance quality and display effect of the flexible display screen 200.

[0066] For example, please continue to refer to Figure 4 The first hole structure 230a includes a through hole 231a that penetrates the thickness direction of the main body layer 231.

[0067] The shape of the through hole 231a can be various, such as circular, rectangular, rhomboid or strip, etc. The shape of the through hole 231a is not limited here.

[0068] It should be noted that when the bending portion 223 is provided with a third hole structure 223a and the first connecting layer 232 is provided with a second hole structure 232a, the through hole 231a is connected to the second hole structure 232a and the third hole structure 223a. At this time, the second connecting layer 233 can block the display module 210 from the through hole 231a, thereby isolating the display module 210 from the external environment of the display module 210. This can prevent dust from entering the display module 210 through the through hole 231a, so that the first buffer film layer 230 can still achieve the dustproof function and avoid affecting the normal display of the display module 210.

[0069] For example, please refer to Figure 6 , Figure 6 This is a schematic diagram of the second connection between the support member and the first buffer membrane layer according to an embodiment of this application. The first hole structure 230a includes a blind hole 231b disposed along the thickness direction of the main body layer 231.

[0070] It is understandable that by providing blind holes 231b in the main body layer 231, the thickness of the area of ​​the main body layer 231 where the blind holes 231b are provided is reduced, which can also reduce the resilience of the main body layer 231.

[0071] Please refer to Figure 6 , Figure 7 and Figure 8 , Figure 7This is a schematic diagram of the third connection between the support member and the first buffer membrane layer according to an embodiment of this application. Figure 8 This is a schematic diagram of the fourth connection between the support member and the first buffer membrane layer in an embodiment of this application. The blind hole 231b can be provided on the first side of the main body layer 231, or it can be provided on the second side of the main body layer 231, or it can be provided on both the first and second sides of the main body layer 231. This embodiment of the application does not limit this.

[0072] In this design, the size of the first hole structure 230a is smaller than the size of the third hole structure 223a. For example, when the first hole structure 230a is a through hole 231a, the size of the through hole 231a cannot be too large, and the size of the through hole 231a must be smaller than the size of the third hole structure 223a to prevent the second connecting layer 233 from sinking into the through hole 231a. For instance, after multiple tests, to reduce the resilience of the main body layer 231 while preventing the second connecting layer 233 from sinking into the through hole 231a, the design width (or diameter) of the through hole 231a can be 0.05-0.2 mm. When there are multiple through holes 231a, the spacing between adjacent through holes 231a can be 0.05-1.0 mm.

[0073] For example, when the first hole structure 230a is a blind hole 231b, and the blind hole 231b is located on the second side of the main body layer 231 (e.g.) Figure 6 As shown, the size of the blind hole 231b can be smaller than the size of the third hole structure 223a to prevent the second connecting layer 233 from sinking into the blind hole 231b. For example, after multiple tests, to reduce the resilience of the main body layer 231 while preventing the second connecting layer 233 from sinking into the blind hole 231b, the design width (or diameter) of the blind hole 231b can be 0.05-0.2 mm. When there are multiple blind holes 231b, the spacing between adjacent blind holes 231b can be 0.05-1.0 mm.

[0074] It should be noted that in some embodiments, the size of the blind hole 231b may be larger than the size of the third hole structure 223a, or the size of the blind hole 231b may be equal to the size of the third hole structure 223a. In this case, the second connecting layer 233 can be prevented from sinking by filling part of the blind hole 231b with filler.

[0075] For example, please refer to Figure 9 , Figure 9This is a schematic diagram of the fifth connection between the support member and the first buffer membrane layer provided in the embodiments of this application. When a blind hole 231b is provided on the second side of the main body layer 231, that is, when the blind hole 231b is provided on the side of the main body layer 231 facing the second connecting layer 233, the second connecting layer 233 can also partially extend into the blind hole 231b and fill the blind hole 231b. This can prevent the second connecting layer 233 above the blind hole 231b from sinking into the blind hole 231b when the size of the blind hole 231b is large.

[0076] Please refer to the reference. Figure 3 and Figure 10 , Figure 10 This is a schematic diagram showing the connection between the first buffer film layer and the support member when the first hole structure is not provided, as provided in the embodiments of this application. The main body layer 231 includes a first part 2311, a second part 2312, and a third part 2313. The first part 2311 is disposed between the display module 210 and the first support part 221. The second part 2312 is disposed between the display module 210 and the second support part 222. The third part 2313 is disposed between the display module 210 and the bending part 223, and the third part 2313 connects the first part 2311 and the second part 2312.

[0077] Understandably, the first part 2311 of the main body layer 231 corresponds to the first support part 221, the second part 2312 corresponds to the second support part 222, and the third part 2313 corresponds to the bending part 223. The first hole structure 230a can be provided in any part of the main body layer 231, that is, the first hole structure 230a can be provided in at least one of the first part 2311, the second part 2312, and the third part 2313.

[0078] For example, in some implementations, please refer to the references Figure 4 and Figure 10 The first hole structure 230a can be disposed in the third part 2313. Therefore, the first hole structure 230a is disposed in the portion of the main body layer 231 corresponding to the bending portion 223, that is, the first hole structure 230a is disposed in the bending area of ​​the main body layer 231. Thus, by disposing of the first hole structure 230a in the third part 2313, not only can the resilience of the main body layer 231 be reduced, allowing for a reduction in the design thickness of the first connecting layer 232 and the second connecting layer 233 on both sides of the main body layer 231, thereby reducing the overall thickness of the flexible display screen 200 and the electronic device 10; but also, disposing of the first hole structure 230a in the third part 2313 can enhance the flexibility of the third part 2313, that is, enhance the bending performance of the bending area of ​​the main body layer 231, making the main body layer 231 easier to bend under stress, thus improving the problem of wrinkles easily forming in the bending area of ​​the main body layer 231 after frequent bending, and avoiding undesirable light and shadow phenomena on the display module 210.

[0079] Optionally, in some implementations, please refer to the references. Figure 10 and Figure 11 , Figure 11 This is a sixth connection diagram between the support member and the first buffer membrane layer according to an embodiment of this application. The first hole structure 230a can be provided in the first part 2311 and the second part 2312. Therefore, providing the first hole structure 230a in the non-bending part 223 of the main body layer 231 can also reduce the resilience of the main body layer 231.

[0080] Optionally, in some implementations, please refer to the references. Figure 10 and Figure 12 , Figure 12 This is a schematic diagram of the seventh connection between the support member and the first buffer membrane layer according to an embodiment of this application. The first hole structure 230a can be provided in the first part 2311, the second part 2312, and the third part 2313. Therefore, the first hole structure 230a can be provided in various parts of the main body layer 231, which can reduce the rebound force of the main body layer 231 and improve the overall flexibility of the main body layer 231, making the main body layer 231 easier to bend under force.

[0081] The flexible display screen and 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. Furthermore, 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 flexible display screen, characterized in that, include: Display module; A support member, stacked on one side of the display module, includes a first support portion, a second support portion, and a bent portion connecting the first support portion and the second support portion. The bent portion is bendable under force. The bent portion has a plurality of spaced third holes extending through the thickness direction of the bent portion. A first buffer film layer is disposed between the display module and the support member to connect the display module and the support member. The first buffer film layer has one or more first hole structures. The first buffer film layer includes a main body layer, a first connecting layer, and a second connecting layer. The main body layer has a first side and a second side facing each other, and the main body layer is provided with the first hole structure. The first connecting layer is disposed on the first side and connects the main body layer and the support member. The second connecting layer is disposed on the second side and connects the main body layer and the display module. The first connecting layer includes a first sub-connecting layer connected to the first support portion and a second sub-connecting layer connected to the second support portion. A second hole structure is provided between the first sub-connecting layer and the second sub-connecting layer, penetrating the thickness direction of the first connecting layer. The projection of the second hole structure on the support member is located at the bending portion. A plurality of third hole structures are connected to the second hole structure. The size of the first hole structure is smaller than the size of the third hole structure.

2. The flexible display screen according to claim 1, characterized in that, The first hole structure includes a through hole extending through the thickness direction of the main body layer.

3. The flexible display screen according to claim 1, characterized in that, The first hole structure includes blind holes disposed along the thickness direction of the main body layer.

4. The flexible display screen according to claim 1, characterized in that, The main body layer includes: The first part is disposed between the display module and the first support part; The second part is disposed between the display module and the second support portion; and The third part is disposed between the display module and the bent portion, and the third part connects the first part and the second part; The first hole structure is disposed in at least one of the first part, the second part, and the third part.

5. The flexible display screen according to any one of claims 1 to 4, characterized in that, The thickness of the first connecting layer and the thickness of the second connecting layer are both less than the thickness of the main body layer.

6. The flexible display screen according to any one of claims 1 to 4, characterized in that, The thickness of the first connecting layer is 10-15 micrometers, and / or the thickness of the second connecting layer is 10-15 micrometers.

7. An electronic device, characterized in that, It includes a housing and a flexible display screen disposed on the housing, wherein the flexible display screen is the flexible display screen as described in any one of claims 1 to 6.

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