Protective film and electronic devices

Abstract

The present application discloses a protective film and an electronic device, which belong to the field of display technology. The protective film includes: a first flexible protective layer, a second flexible protective layer, a fluid portion and two rigid protective layers. The fluid portion distributed in the bending area of ​​the protective film can flow freely, so that the bending area in the protective film will not break due to a large number of folding and unfolding times. In addition, the two planar display parts in the flexible display screen are more effectively protected by two rigid protective layers. In this way, after the front of the folding display screen bonded with the protective film is impacted, the rigid protective layer in the protective film can better bear these impacts, and the fluid portion in the protective film can effectively buffer these impacts, so that the folding display screen bonded with the protective film is not easily damaged, thereby ensuring that the reliability of the folding display screen bonded with the protective film is high.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a protective film and an electronic device. Background Art

[0002] With the development of electronic technology, more and more electronic devices will be equipped with foldable display screens. Electronic devices equipped with foldable display screens can generally be called foldable display devices. The application of foldable display screens can realize the switching of the physical size of electronic devices, bringing a better user experience.

[0003] Generally, flexible display screens are usually relatively soft, and their surfaces are easily scratched and damaged. It is usually necessary to provide a plastic film on the display side of the foldable display screen to protect the flexible display screen.

[0004] However, plastic films are usually relatively soft, and their protective effect on flexible displays is relatively limited, resulting in the risk of damage to the folding display screen bonded with the plastic film, which in turn leads to lower reliability of the folding display screen. Utility Model Content

[0005] The embodiment of the present application provides a protective film and an electronic device. The problem of low reliability of a foldable display screen can be solved. The technical solution is as follows:

[0006] In one aspect, a protective film is provided, comprising:

[0007] The protective film has: two plane areas and a bending area between the two plane areas in the first direction; the protective film includes:

[0008] A first flexible protective layer and a second flexible protective layer are arranged in the two plane areas and the bending area, wherein the first flexible protective layer and the second flexible protective layer are stacked in a thickness direction of the protective film;

[0009] A rigid protective layer is respectively arranged in each of the planar regions, wherein the rigid protective layer is located between the first flexible protective layer and the second flexible protective layer in the thickness direction;

[0010] And, a fluid portion at least distributed in the bending zone, wherein the fluid portion is located between the first flexible protective layer and the second flexible protective layer in the thickness direction, and the fluid portion is located between the two rigid protective layers in the first direction.

[0011] Optionally, the rigid protective layer comprises: a protective layer body, and a buffer portion fixedly connected to a side of the protective layer body facing the fluid portion, and a side of the buffer portion facing the fluid portion is an inclined surface;

[0012] Wherein, the width of the buffer portion in the first direction gradually decreases along the direction from the second flexible protective layer to the first flexible protective layer.

[0013] Optionally, the first flexible protective layer has two first side edges arranged opposite to each other in the first direction;

[0014] Wherein, in the first direction, a side of the protective layer body facing away from the buffer portion protrudes relative to the first side edge.

[0015] Optionally, the second flexible protective layer has two second side edges arranged opposite to each other in the first direction;

[0016] Wherein, in the first direction, a side of the protective layer body facing away from the buffer portion is protruding relative to the second side edge of the second flexible protective layer.

[0017] Optionally, the distance between the two first side edges is smaller than the distance between the two second side edges.

[0018] Optionally, the rigid protective layer further comprises: a protruding portion connected to a side of the protective layer body away from the fluid portion, and a side of the protruding portion away from the protective layer body is an arc-shaped convex surface.

[0019] Optionally, after the protective film is assembled to the folding screen device, the second flexible protective layer is bonded close to the display side of the folding screen device.

[0020] Optionally, the protective film further includes: a first adhesive layer located between the first flexible protective layer and the two rigid protective layers, and a second adhesive layer located between the second flexible protective layer and the two rigid protective layers.

[0021] Optionally, the protective film further comprises: two shielding portions located opposite to each other in the bending area, the two shielding portions are respectively distributed on both sides of the bending area in the second direction, and both sides of each shielding portion are respectively fixedly connected to the two rigid protective layers, the two shielding portions, the two rigid protective layers, the first flexible protective layer and the second flexible protective layer are used to enclose a sealed space, and the fluid portion is located in the sealed space;

[0022] The second direction is perpendicular to the first direction and perpendicular to the thickness direction.

[0023] Optionally, the volume of the sealed space is greater than or equal to the volume of the fluid portion.

[0024] On the other hand, an electronic device is provided, comprising: a foldable display screen, and a protective film bonded to a display side of the foldable display screen, wherein the protective film is any of the protective films described above.

[0025] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0026] A protective film includes: a first flexible protective layer, a second flexible protective layer, a fluid portion, and two rigid protective layers. The fluid portion distributed in the bending area of ​​the protective film can flow freely, so that the bending area of ​​the protective film will not break due to a large number of folding and unfolding times. In addition, the two rigid protective layers in the protective film can respectively protect the two planar display parts in the flexible display screen more effectively, and the cooperation of the first flexible protective layer, the second flexible protective layer and the fluid portion in the protective film can effectively protect the folding display part in the flexible display screen. In this way, after the front of the folding display screen bonded with the protective film is impacted, the rigid protective layer in the protective film can better bear these impacts, and the fluid portion in the protective film can effectively buffer these impacts, so that the folding display screen bonded with the protective film is not easily damaged, thereby ensuring that the reliability of the folding display screen bonded with the protective film is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a top view of a protective film provided in an embodiment of the present application;

[0029] Figure 2 yes Figure 1 The schematic diagram of the protective film structure at the A-A' section is shown;

[0030] Figure 3 yes Figure 1 Another schematic diagram of the structure of the protective film at the AA' section is shown;

[0031] Figure 4 yes Figure 1 The schematic diagram of the protective film structure in the BB' section is shown;

[0032] Figure 5 yes Figure 1 Another schematic diagram of the structure of the protective film in the AA' section is shown;

[0033] Figure 6 It is a top view of another protective film provided by the present application. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0035] Please refer to Figure 1 and Figure 2 , Figure 1 is a top view of a protective film provided in an embodiment of the present application, Figure 2 yes Figure 1 The protective film is shown in a schematic diagram of the cross-sectional structure of A-A'. The protective film 000 may have two plane areas 00a in the first direction X, and a bending area 00b located between the two plane areas 00a. Here, the protective film 000 may be bonded to the display side of the folding display screen, and the folding display screen may include two plane display parts, and a folding display part located between the two plane display parts. The two plane areas 00a in the protective film 000 may be bonded to the two plane display parts in the folding display screen, respectively, and the bending area 00b in the protective film 000 may be bonded to the folding display part in the folding display screen.

[0036] The protective film 000 may include a first flexible protective layer 100 , a second flexible protective layer 200 , a fluid portion 300 , and two rigid protective layers 400 .

[0037] The first flexible protective layer 100 and the second flexible protective layer 200 in the protective film 000 may be stacked in the thickness direction Y of the protective film 000 , and both the first flexible protective layer 100 and the second flexible protective layer 200 may be disposed in the two planar regions 00 a and the bending region 00 b .

[0038] The two rigid protective layers 400 in the protective film 000 can be respectively arranged in the two plane areas 00a, that is, one rigid protective layer 400 can be arranged in each plane area 00a. And the rigid protective layer 400 is located between the first flexible protective layer 100 and the second flexible protective layer 200 in the thickness direction Y of the protective film 000. Here, the two rigid protective layers 400 in the protective film 000 can both be made of glass material to ensure that the hardness of each rigid protective layer 400 in the protective film 000 is high.

[0039] The fluid portion 300 in the protective film 000 may be distributed at least in the bending area 00b, the fluid portion 300 may be located between the first flexible protective layer 100 and the second flexible protective layer 200 in the thickness direction Y of the protective film 000, and the fluid portion 300 may be located between the two rigid protective layers 400 in the first direction X. Here, the fluid portion 300 in the protective film 000 may be a fluid with a certain fluidity.

[0040] In the present application, the first flexible protective layer 100 and the second flexible protective layer 200 in the protective film 000 are relatively soft, while the rigid protective layer 400 in the protective film 000 has a high hardness, so the portion of the first flexible protective layer 100 and the second flexible protective layer 200 connected to the rigid protective layer 400 will not bend. Since the fluid portion 300 in the protective film 000 has a certain fluidity, the portion of the first flexible protective layer 100 and the second flexible protective layer 200 in contact with the fluid portion 300 can be bent. After the protective film 000 is bonded to the display side of the folding display screen, the two plane areas 00a in the protective film 000 are bonded to the two plane display parts in the folding display screen respectively, and the bending area 00b in the protective film 000 is bonded to the folding display part in the folding display screen, so that it can be ensured that the folding display screen bonded with the protective film 000 can be folded and unfolded normally.

[0041] In this case, during the switching between the folding state and the unfolding state of the folding display screen bonded with the protective film 000, the fluid part 300 distributed in the bending area 00b of the protective film 000 can flow freely to ensure that the bending area 00b of the protective film 000 will not be broken due to a large number of folding and unfolding. In addition, the two rigid protective layers 400 in the protective film 000 can respectively provide more effective protection for the two planar display parts in the flexible display screen, and the cooperation of the first flexible protective layer 100, the second flexible protective layer 200 and the fluid part 300 in the protective film 000 can effectively protect the folding display part in the flexible display screen. For example, when the front side of the folding display screen bonded with the protective film 000 is impacted, the rigid protective layer 400 in the protective film 000 can better withstand the impacts, and the fluid part 300 in the protective film 000 can effectively buffer the impacts, so that the folding display screen bonded with the protective film 000 is not easily damaged, thereby ensuring that the reliability of the folding display screen bonded with the protective film 000 is high.

[0042] In summary, a protective film provided by an embodiment of the present application comprises: a first flexible protective layer, a second flexible protective layer, a fluid portion and two rigid protective layers. The fluid portion distributed in the bending zone of the protective film can flow freely, so that the bending zone in the protective film will not break due to a large number of folding and unfolding. In addition, the two rigid protective layers in the protective film can respectively protect the two planar display parts in the flexible display screen more effectively, and the cooperation of the first flexible protective layer, the second flexible protective layer and the fluid portion in the protective film can effectively protect the folding display part in the flexible display screen. In this way, after the front of the folding display screen bonded with the protective film is impacted, the rigid protective layer in the protective film can better bear these impacts, and the fluid portion in the protective film can effectively buffer these impacts, so that the folding display screen bonded with the protective film is not easily damaged, thereby ensuring that the reliability of the folding display screen bonded with the protective film is high.

[0043] In the examples of this application, please refer to Figure 3 , Figure 3 yes Figure 1 Another structural schematic diagram of the protective film at the AA′ section is shown. The rigid protective layer 400 in the protective film 000 may include: a protective layer body 401 , and a buffer portion 402 fixedly connected to a side of the protective layer body 401 facing the fluid portion 300 .

[0044] The side of the buffer portion 402 in the rigid protective layer 400 facing the fluid portion 300 may be a slope S. The buffer portion 402 may contact the fluid portion 300 through the slope S, thereby ensuring that the contact area between the buffer portion 402 and the fluid portion 300 is large. The width of the buffer portion 402 in the first direction X gradually decreases along the direction from the second flexible protective layer 200 to the first flexible protective layer 100.

[0045] Here, after the protective film 000 is assembled to the folding screen device, the second flexible protective layer 200 in the protective film 000 can be bonded close to the display side of the folding screen device. That is, the side of the second flexible protective layer 200 in the protective film 000 that is away from the first flexible protective layer 100 can be bonded to the display side of the folding display screen to ensure that the protective film 000 as a whole can be bonded to the display side of the folding display screen. In addition, after the folding display screen bonded with such a protective film 000 is folded, the parts of the first flexible protective layer 100 in the protective film 000 located in the two plane areas 00a will be in contact with each other.

[0046] When such a protective film 000 is bonded to the display side of a folding display screen, the side of the first flexible protective layer 100 in the protective film 000 that faces away from the second flexible protective layer 200 is usually subjected to external forces such as pressing or collision. When the portion of the first flexible protective layer 100 in the protective film 000 that is located in the bending area 00b is subjected to these external forces, or when the folding display screen bonded with such a protective film 000 is folded, the fluid portion 300 located in the bending area 00b may flow toward the plane areas 00a on both sides, thereby impacting the side of the rigid protective layer 400 located in the plane area 00a that is facing the bending area 00b. A buffer portion 402 having a larger contact area with the fluid portion 300 is provided in the rigid protective layer 400, and the width of the buffer portion 402 in the first direction X is gradually reduced along the direction from the second flexible protective layer 200 to the first flexible protective layer 100, so that after the fluid portion 300 located in the bending area 00b flows toward the plane area 00a on both sides, the area of ​​the buffer portion 402 in the rigid protective layer 400 that can withstand the flow impact of the fluid portion 300 is larger, thereby ensuring that the buffer portion 402 in the rigid protective layer 400 can withstand these impacts more stably, so that the connection between the first flexible protective layer 100 and the rigid protective layer 400 in the protective film 000 is more stable, and the connection between the second flexible protective layer 200 and the rigid protective layer 400 is more stable.

[0047] In the embodiments of the present application, Figure 3 As shown, the first flexible protective layer 100 may have two first side edges A1 arranged opposite to each other in the first direction X. In the first direction X, a side of the protective layer body 401 in the rigid protective layer 400 that is away from the buffer portion 402 may protrude relative to the first side edge A1 in the first flexible protective layer 100. That is, a portion of the structure in the rigid protective layer 400 in the first direction X is not covered by the first flexible protective layer 100.

[0048] In this case, when the folding display screen bonded with the protective film 000 is in an unfolded state, the first side edge A1 of the first flexible protective layer 100 in the protective film 000 will not protrude from the side of the protective layer body 401 in the rigid protective layer 400 away from the buffer portion 402. In addition, after the protective film 000 is bonded to the display side of the folding display screen, the second flexible protective layer 200 in the protective film 000 can be closer to the folding display screen relative to the first flexible protective layer 100, and after the folding display screen bonded with the protective film 000 is folded, the parts of the first flexible protective layer 100 in the protective film 000 located in the two plane areas 00a will be in contact with each other. Therefore, in the process of switching the folding display screen bonded with such a protective film 000 from an unfolded state to a folded state, even if the first flexible protective layer 100 is laterally displaced relative to the rigid protective layer 400, so that the first side A1 of the first flexible protective layer 100 may be displaced outward toward the corresponding side in the rigid protective layer 400, it can be ensured that the first side A1 of the first flexible protective layer 100 will not protrude from the side of the protective layer body 401 in the rigid protective layer 400 away from the buffer portion 402, thereby ensuring that the first side A1 of the first flexible protective layer 100 will not be worn due to protruding from the side of the protective layer body 401 in the rigid protective layer 400 away from the buffer portion 402.

[0049] Optional, such as Figure 3 As shown, the second flexible protective layer 200 may have two second side edges A2 arranged opposite to each other in the first direction X. In the first direction X, a side of the protective layer body 401 in the rigid protective layer 400 away from the buffer portion 402 may protrude relative to the second side edge A2 in the second flexible protective layer 200. That is, a portion of the structure in the rigid protective layer 400 in the first direction X is not covered by the second flexible protective layer 200.

[0050] In this case, when the folding display screen bonded with the protective film 000 is in the unfolded state, the second side A2 of the second flexible protective layer 200 in the protective film 000 will not protrude from the side of the protective layer body 401 in the rigid protective layer 400 away from the buffer portion 402. In addition, after the protective film 000 is bonded to the display side of the folding display screen, the second flexible protective layer 200 in the protective film 000 can be closer to the folding display screen relative to the first flexible protective layer 100, and after the folding display screen bonded with the protective film 000 is folded, the parts of the first flexible protective layer 100 in the protective film 000 located in the two plane areas 00a will be in contact with each other. Therefore, in the process of the folding display screen bonded with the protective film 000 switching from the unfolded state to the folded state, the rigid protective layer 400 has a lateral displacement relative to the first flexible protective layer 100, so that the second side A2 of the second flexible protective layer 200 may be displaced inward away from the corresponding side of the rigid protective layer 400. To this end, the second side A2 of the second flexible protective layer 200 will not protrude from the side of the protective layer body 401 in the rigid protective layer 400 away from the buffer portion 402, thereby ensuring that the second side A2 of the second flexible protective layer 200 will not be worn due to protruding from the side of the protective layer body 401 in the rigid protective layer 400 away from the buffer portion 402.

[0051] In the embodiment of the present application, when the folding display screen bonded with the protective film 000 switches from the unfolded state to the folded state, the first side A1 of the first flexible protective layer 100 may move outward toward the corresponding side in the rigid protective layer 400, and the second side A2 of the second flexible protective layer 200 may move inward away from the corresponding side in the rigid protective layer 400. Therefore, please refer to Figure 3 , it is necessary to ensure that the distance between the two first sides A1 in the first flexible protective layer 100 is smaller than the distance between the two second sides A2 in the second flexible protective layer 200. That is, in the first direction X, the length of the second flexible protective layer 200 can be greater than the length of the first flexible protective layer 100. In this way, it can be ensured that the first side A1 of the first flexible protective layer 100 and the second side A2 of the second flexible protective layer 200 will not protrude from the side of the protective layer body 401 in the rigid protective layer 400 away from the buffer portion 402 during the folding or unfolding process, so that the first side A1 of the first flexible protective layer 100 and the second side A2 of the second flexible protective layer 200 will not be worn.

[0052] Optional, please continue to refer to Figure 3, the rigid protective layer 400 in the protective film 000 may also include: a protrusion 403 connected to the side of the protective layer body 401 away from the fluid part 300, wherein the side of the protrusion 403 away from the protective layer body 401 may be an arc-shaped convex surface. In this way, the transition of the side of the protective layer body 401 away from the fluid part 300 can be smoother and more natural. For example, when a user uses a folding display screen bonded with such a protective film 000, the side of the protective film 000 where the protrusion 403 is provided is not easy to cut the user's fingers, thereby improving the user's experience. In addition, the protrusion 403 in the rigid protective layer 400 may protrude from the first side A1 of the first flexible protective layer 100, and the protrusion 403 in the rigid protective layer 400 may also protrude from the second side A2 of the second flexible protective layer 200, so as to ensure that the first side A1 of the first flexible protective layer 100 and the second side A2 of the second flexible protective layer 200 do not protrude from the rigid protective layer 400.

[0053] In this application, please refer to Figure 4 , Figure 4 yes Figure 1 The schematic diagram of the protective film in the BB' cross-sectional structure is shown. The first flexible protective layer 100 may have two third sides A3 arranged opposite to each other in the second direction Z, and the second flexible protective layer 200 may have two fourth sides A4 arranged opposite to each other in the second direction Z. The second direction Z may be perpendicular to the first direction X and perpendicular to the thickness direction Y of the protective film 000. To this end, the extension direction of the third side A3 and the extension direction of the fourth side A4 may be parallel to the first direction X. Here, in the second direction Z, each third side A3 in the first flexible protective layer 100 may be flush with the corresponding fourth side A4 in the second flexible protective layer 200, and may be flush with the corresponding side in the rigid protective layer 400.

[0054] In the examples of this application, please refer to Figure 5 , Figure 5 yes Figure 1 The protective film 000 may further include: a first adhesive layer 500 located between the first flexible protective layer 100 and the two rigid protective layers 400 , and a second adhesive layer 600 located between the second flexible protective layer 200 and the two rigid protective layers 400 .

[0055] Here, the first adhesive layer 500 can be bonded to the first flexible protective layer 100 and the two rigid protective layers 400 respectively. In this way, the first flexible protective layer 100 and the two rigid protective layers 400 can be bonded together through the first adhesive layer 500, so that the connection between the first flexible protective layer 100 and the two rigid protective layers 400 in the protective layer 000 is more stable.

[0056] The second adhesive layer 600 can be bonded to the second flexible protective layer 200 and the two rigid protective layers 400 respectively. In this way, the second flexible protective layer 200 and the two rigid protective layers 400 can be bonded together through the second adhesive layer 600, so that the connection between the second flexible protective layer 200 and the two rigid protective layers 400 in the protective layer 000 is more stable.

[0057] In the examples of this application, please refer to Figure 6 , Figure 6 000 is a top view of another protective film provided by the present application. The protective film 000 may also include: two shielding portions 700 disposed opposite to each other in the bending area 00b. The two shielding portions 700 may be respectively distributed on both sides of the bending area 00b in the second direction Z, and the two sides of each shielding portion 700 may be fixedly connected to the two rigid protective layers 400 respectively.

[0058] Here, the two shielding parts 700 , the two rigid protective layers 400 , the first flexible protective layer 100 and the second flexible protective layer 200 may be used to enclose the sealed space A, and the fluid part 300 may be located in the sealed space A.

[0059] Optionally, the volume of the sealed space A may be greater than or equal to the volume of the fluid portion 300, so that the fluid portion 300 can be laid as flat as possible in the sealed space A and the fluid portion 300 will not extend to areas other than the sealed space A. Even if the fluid portion 300 can flow freely, it can be ensured that areas of the protective film 000 other than the sealed space A will not be disturbed by the fluid portion 300.

[0060] In summary, a protective film provided by an embodiment of the present application comprises: a first flexible protective layer, a second flexible protective layer, a fluid portion and two rigid protective layers. The fluid portion distributed in the bending zone of the protective film can flow freely, so that the bending zone in the protective film will not break due to a large number of folding and unfolding. In addition, the two rigid protective layers in the protective film can respectively protect the two planar display parts in the flexible display screen more effectively, and the cooperation of the first flexible protective layer, the second flexible protective layer and the fluid portion in the protective film can effectively protect the folding display part in the flexible display screen. In this way, after the front of the folding display screen bonded with the protective film is impacted, the rigid protective layer in the protective film can better bear these impacts, and the fluid portion in the protective film can effectively buffer these impacts, so that the folding display screen bonded with the protective film is not easily damaged, thereby ensuring that the reliability of the folding display screen bonded with the protective film is high.

[0061] The embodiment of the present application also provides an electronic device, which may be a foldable display device. For example, the electronic device may be a mobile phone, a tablet computer, or a laptop computer. The electronic device may include: a foldable display screen, and a protective film bonded to the display side of the foldable display screen. The protective film is the protective film shown in the above embodiment.

[0062] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0063] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A protective film, characterized in that: The protective film has: two plane areas and a bending area between the two plane areas in the first direction; the protective film includes: A first flexible protective layer and a second flexible protective layer are arranged in the two plane areas and the bending area, wherein the first flexible protective layer and the second flexible protective layer are stacked in a thickness direction of the protective film; A rigid protective layer is respectively arranged in each of the planar regions, wherein the rigid protective layer is located between the first flexible protective layer and the second flexible protective layer in the thickness direction; And, a fluid portion at least distributed in the bending zone, wherein the fluid portion is located between the first flexible protective layer and the second flexible protective layer in the thickness direction, and the fluid portion is located between the two rigid protective layers in the first direction.

2. The protective film according to claim 1, characterized in that: The rigid protective layer comprises: a protective layer body, and a buffer portion fixedly connected to a side of the protective layer body facing the fluid portion, wherein a side of the buffer portion facing the fluid portion is an inclined surface; The width of the buffer portion in the first direction gradually decreases along the direction from the second flexible protective layer to the first flexible protective layer.

3. The protective film according to claim 2, characterized in that: The first flexible protective layer has two first side edges arranged opposite to each other in the first direction; Wherein, in the first direction, a side of the protective layer body facing away from the buffer portion protrudes relative to the first side edge.

4. The protective film according to claim 3, characterized in that: The second flexible protective layer has two second side edges which are arranged opposite to each other in the first direction; Wherein, in the first direction, a side of the protective layer body facing away from the buffer portion is protruding relative to the second side edge of the second flexible protective layer.

5. The protective film according to claim 4, characterized in that: The distance between the two first sides is smaller than the distance between the two second sides.

6. The protective film according to claim 2, characterized in that: The rigid protective layer further comprises: a protruding portion connected to a side of the protective layer body away from the fluid portion, and a side of the protruding portion away from the protective layer body is an arc-shaped convex surface.

7. The protective film according to any one of claims 2 to 6, characterized in that: After the protective film is assembled to the folding screen device, the second flexible protective layer is bonded close to the display side of the folding screen device.

8. The protective film according to any one of claims 1 to 6, characterized in that: The protective film further includes: a first adhesive layer located between the first flexible protective layer and the two rigid protective layers, and a second adhesive layer located between the second flexible protective layer and the two rigid protective layers.

9. The protective film according to any one of claims 1 to 6, characterized in that: The protective film further comprises: two shielding parts oppositely arranged in the bending area, the two shielding parts are respectively distributed on both sides of the bending area in the second direction, and both sides of each shielding part are respectively fixedly connected to the two rigid protective layers, the two shielding parts, the two rigid protective layers, the first flexible protective layer and the second flexible protective layer are used to enclose a sealed space, and the fluid part is located in the sealed space; The second direction is perpendicular to the first direction and perpendicular to the thickness direction.

10. The protective film according to claim 9, characterized in that: The volume of the sealed space is greater than or equal to the volume of the fluid portion.

11. An electronic device, comprising: A foldable display screen, and a protective film bonded to the display side of the foldable display screen, wherein the protective film is the protective film according to any one of claims 1 to 10.

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