Flexible screen and folding electronic device

Abstract

A flexible screen (10) and a folding electronic device (100). The flexible screen (10) comprises a flexible display panel (11), equal-thickness ultrathin glass (12), a screen protection layer (13), and a support stack layer (14), wherein the equal-thickness ultrathin glass (12) is connected to a light output side of the flexible display panel (11); the screen protection layer (13) is connected to the side of the equal-thickness ultrathin glass (12) facing away from the flexible display panel (11); an overhead area is formed between the screen protection layer (13) and the flexible display panel (11); and the support stack layer (14) is arranged in the overhead area, the support stack layer (14) is connected between the flexible display panel (11) and the screen protection layer (13), the support stack layer (14) protrudes from an edge of the flexible display panel (11), and the support stack layer (14) and the equal-thickness ultrathin glass (12) are spaced apart to form a gap (J).

Description

Flexible screens and foldable electronic devices

[0001] This application claims priority to Chinese patent application number 2023117093125, filed on December 12, 2023, entitled “Flexible Screen and Foldable Electronic Device,” the entire text of which is hereby incorporated by reference. Technical Field

[0002] The present application relates to the technical field of electronic devices, and in particular to flexible screens and foldable electronic devices. Background Art

[0003] Foldable electronic devices utilize flexible screens for foldable use, improving portability and gaining popularity among consumers. However, the decorative elements between the middle frame and the edge of the flexible screen occupy a significant design dimension, creating a visually wide border area that detracts from the aesthetics. Furthermore, the abrupt removal of decorative elements, without the cushioning provided by the decorative elements between the middle frame and the flexible screen, can easily shatter when dropped or struck by hard objects. Consequently, this structure lacks effective impact resistance. Furthermore, cost control makes it increasingly difficult to simultaneously improve the impact resistance of the flexible screen while reducing costs.

[0004] Summary of the Invention

[0005] The present application provides a flexible screen and a foldable electronic device.

[0006] A flexible screen, comprising:

[0007] A flexible display panel having a light emitting side;

[0008] Ultra-thin glass of equal thickness, connected to the light-emitting side of the flexible display panel, with the edge of the ultra-thin glass of equal thickness located inside the edge of the flexible display panel; and

[0009] A screen protection layer is connected to a side of the ultra-thin glass of equal thickness facing away from the flexible display panel, wherein an edge of the screen protection layer is located outside the edge of the flexible display panel, and an overhead area is formed between the screen protection layer and the flexible display panel, and the overhead area is located outside the edge of the ultra-thin glass of equal thickness;

[0010] A supporting laminate is provided in the overhead area, the supporting laminate is connected between the flexible display panel and the screen protection layer, the supporting laminate protrudes from the edge of the flexible display panel, and the supporting laminate and the ultra-thin glass of equal thickness are spaced apart to form a gap.

[0011] A foldable electronic device comprises the flexible screen as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0013] FIG1 is a schematic diagram of a foldable electronic device in a flattened state provided by one embodiment.

[0014] FIG2 is a schematic diagram of another state of the foldable electronic device provided by one embodiment.

[0015] FIG3 is a top view of a foldable electronic device provided in one embodiment, wherein the dotted line structure in the figure shows the installation position of the hinge mechanism.

[0016] FIG4 is a schematic cross-sectional view of a foldable electronic device along line DD in FIG3 , provided in one embodiment.

[0017] FIG5 is a schematic cross-sectional view of a foldable electronic device provided in another embodiment along line DD in FIG3 .

[0018] FIG6 is a schematic cross-sectional view of a flexible screen of a foldable electronic device according to an embodiment.

[0019] FIG7 is a schematic cross-sectional view of a flexible screen of a foldable electronic device according to another embodiment.

[0020] Figure markings: 100, foldable electronic device; 100a, first connecting member; 100b, second connecting member; 100c, third connecting member; 10, flexible screen; WQ, screen expansion area; VA, display area; BM, black border area; 11, flexible display panel; 12, ultra-thin glass of equal thickness; 13, screen protection layer; 14, supporting laminate; 14a, substrate layer; 14b, pressure-sensitive adhesive layer; J, gap; 15, filling member; 16, ink layer; OCA1, first optical adhesive layer; OCA2, second optical adhesive layer; 17, back film layer; 18, panel bottom protection layer; 19, supporting member; 20, middle frame; 22, first frame body; 24, second frame body; P, flat plate part; T, step part; 30, hinge mechanism. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0022] As used herein, "foldable electronic device" refers to a device that can receive and / or send communication signals, including but not limited to a device that is connected via any one or more of the following connection methods: (1) via a wired line connection method, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, or a direct cable connection; or (2) via a wireless interface method, such as a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, or an AM-FM broadcast transmitter.

[0023] A foldable electronic device is an electronic device that is configured to communicate via a wireless interface and may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices: (1) satellite phones or cellular phones; (2) personal communications system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; (3) radiotelephones, pagers, Internet / Intranet access, web browsers, notepads, calendars, personal digital assistants (PDAs) equipped with global positioning system (GPS) receivers; (4) conventional laptop and / or palmtop receivers; (5) conventional laptop and / or palmtop radiotelephone transceivers, etc.

[0024] An embodiment of the present application provides a flexible screen, including:

[0025] A flexible display panel having a light emitting side;

[0026] Ultra-thin glass of equal thickness, connected to the light-emitting side of the flexible display panel, with the edge of the ultra-thin glass of equal thickness located inside the edge of the flexible display panel; and

[0027] A screen protection layer is connected to a side of the ultra-thin glass of equal thickness facing away from the flexible display panel, wherein an edge of the screen protection layer is located outside the edge of the flexible display panel, and an overhead area is formed between the screen protection layer and the flexible display panel, and the overhead area is located outside the edge of the ultra-thin glass of equal thickness;

[0028] A supporting laminate is provided in the overhead area, the supporting laminate is connected between the flexible display panel and the screen protection layer, the supporting laminate protrudes from the edge of the flexible display panel, and the supporting laminate and the ultra-thin glass of equal thickness are spaced apart to form a gap.

[0029] In one embodiment, a filling piece is further included. The filling piece is arranged in the gap, and the material hardness of the filling piece is less than the material hardness of the ultra-thin glass of equal thickness.

[0030] In one embodiment, the filling member is formed by curing the optical adhesive filling the gap.

[0031] In one embodiment, the invention further comprises an ink layer, wherein the ink layer is disposed between the screen protection layer and the support laminate, and the ink layer completely covers the gap.

[0032] In one embodiment, the overlapping width between the ink layer and the ultra-thin glass of equal thickness is k1, and 0.1 mm ≤ k1 ≤ 0.5 mm.

[0033] In one embodiment, k1 is 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm.

[0034] In one embodiment, the width of the gap is k2, 0.1 mm ≤ k2 ≤ 0.5 mm.

[0035] In one embodiment, k2 is 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm.

[0036] In one embodiment, the overlapping width between the support stack and the flexible display panel is k3, 0.2 mm ≤ k3 ≤ 1 mm.

[0037] In one embodiment, k3 is 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.7 mm or 1 mm.

[0038] In one embodiment, the supporting laminate includes a substrate layer and a pressure-sensitive adhesive layer, and the substrate layer is connected to the flexible display panel via the pressure-sensitive adhesive layer.

[0039] In one embodiment, the substrate layer is made of polyethylene terephthalate, transparent polyimide or glass.

[0040] In one embodiment, the thickness of the substrate layer is greater than the thickness of the pressure-sensitive adhesive layer.

[0041] In one embodiment, a first optical adhesive layer is further included, wherein the first optical adhesive layer covers the ultra-thin glass of equal thickness and the supporting laminate, and connects the screen protection layer to the ultra-thin glass of equal thickness and the supporting laminate.

[0042] In one embodiment, a second optical adhesive layer is further included, and the ultra-thin glass of equal thickness is connected to the flexible display panel through the second optical adhesive layer, and the thickness of the ultra-thin glass of equal thickness is less than the thickness of the second optical adhesive layer.

[0043] In one embodiment, the supporting laminate includes a substrate layer and a pressure-sensitive adhesive layer, the substrate layer is connected to the flexible display panel via the pressure-sensitive adhesive layer, and the thickness of the substrate layer is greater than the thickness of the pressure-sensitive adhesive layer.

[0044] In one embodiment, it further includes a back film layer, a panel bottom protection layer and a support member, and the back film layer, the panel bottom protection layer and the support member are sequentially arranged on the back side of the flexible display panel.

[0045] Another embodiment of the present application provides a foldable electronic device, including the flexible screen as described above.

[0046] In one embodiment, it also includes a middle frame and a hinge mechanism, the middle frame includes a first frame body and a second frame body, the hinge mechanism is connected between the first frame body and the second frame body, the flexible screen is connected to the first frame body and the second frame body, the flexible screen covers the hinge mechanism, the first frame body and the second frame body both have a flat plate portion and a step portion protruding from the flat plate portion, the side of the flexible screen corresponding to the flexible display panel facing away from the light emitting side is connected to the flat plate portion, and the part of the supporting laminate protruding from the flexible display panel is connected to the step portion.

[0047] In one embodiment, an outer edge of the support stack is spaced apart from a sidewall of the step portion.

[0048] 1 and 2 , an embodiment of the present application provides a foldable electronic device 100, comprising a flexible screen 10. Utilizing the foldable nature of the flexible screen 10, the foldable electronic device 100 can be switched between a folded state and a flattened state.

[0049] The foldable electronic device 100 further includes a middle frame 20 and a hinge mechanism 30. The middle frame 20 includes a first frame body 22 and a second frame body 24. The hinge mechanism 30 is connected between the first frame body 22 and the second frame body 24 so that the first frame body 22 and the second frame body 24 can rotate relative to each other.

[0050] As shown in Figure 3 , the flexible screen 10 is connected to the first frame 22 and the second frame 24, and the flexible screen 10 covers the hinge mechanism 30. The first frame 22 and the flexible screen 10 can be connected by a first structural member, and the second frame 24 and the flexible screen 10 can be connected by a second structural member. The first and second structural members can be adhesive layers or screws, which are not limited here.

[0051] The middle frame 20 forms a receiving cavity (not shown in the figure), and the foldable electronic device 100 may further include a circuit board (not shown in the figure) and a battery (not shown in the figure), and both the circuit board and the battery may be arranged in the receiving cavity of the middle frame 20. The circuit board may integrate the processor, power management module, storage unit, baseband chip, etc. of the foldable electronic device 100. The flexible screen 10 is communicatively connected to the processor, and the battery can power the flexible screen 10 and the electronic components on the circuit board. In some embodiments, the foldable electronic device 100 may further include a camera module (not shown in the figure), which is communicatively connected to the circuit board, and the battery can power the camera module.

[0052] As shown in Figures 3 and 4 , the first frame 22 and the second frame 24 each have a flat portion P and a stepped portion T protruding from the flat portion P. The flexible screen 10 is connected to the flat portion P, and the portion of the flexible screen 10 near the edge is connected to the stepped portion T. The portion of the flexible screen 10 connected to the stepped portion T can be referred to as the "screen expansion area WQ."

[0053] The inventors found that when the foldable electronic device 100 falls or hits a hard object, the flexible screen 10 is most likely to break at the location where it connects to the step portion T. In other words, the impact resistance of the screen's external expansion area WQ is the bottleneck of the foldable electronic device's anti-fall performance 100. To this end, the inventors tried to use UFG (Ultra Flexible Glass, unequal thickness ultra-thin glass) as a cover for the flexible screen 10. Since UFG is thinner at the corresponding bending position and thicker at the corresponding connection position with the middle frame, the bending position has good bending performance while taking into account the impact resistance at the connection position with the middle frame. With in-depth research, the inventors found that if UFG is used as a cover, the bending position needs to be grooved to improve the bending performance by thinning the glass material here, and the grooved position needs to be filled with inorganic materials. This processing technology is complicated and will increase costs. In order to reduce costs, the inventors further explored solutions for how to take into account impact resistance while reducing costs.

[0054] 2 and 3 , the flexible screen 10 includes a flexible display panel 11, ultra-thin glass 12 of equal thickness, a screen protection layer 13, and a support laminate 14. The flexible display panel 11 has a light-emitting side, which is the side of the flexible display panel 11 that emits light for display.

[0055] The ultra-thin glass 12 of uniform thickness is connected to the light-emitting side of the flexible display panel 11. The edge of the ultra-thin glass 12 of uniform thickness is located inside the edge of the flexible display panel 11, that is, the edge of the ultra-thin glass 12 of uniform thickness does not extend beyond the edge of the flexible display panel 11. It should be noted here that the screen expansion area WQ is relative to the flexible display panel 11. Specifically, the portion protruding from the edge of the flexible display panel 11 is the screen expansion area WQ. In this embodiment, the edge of the ultra-thin glass 12 of uniform thickness does not extend beyond the edge of the flexible display panel 11, so the ultra-thin glass 12 of uniform thickness does not extend into the screen expansion area WQ.

[0056] The screen protection layer 13 is connected to the side of the ultra-thin glass 12 of equal thickness that faces away from the flexible display panel 11. The edge of the screen protection layer 13 is located outside the edge of the flexible display panel 11, and the portion of the screen protection layer 13 that extends from the edge of the flexible display panel 11 is located in the screen expansion area WQ. An overhead region is formed between the screen protection layer 13 and the flexible display panel 11, and the overhead region is located outside the edge of the ultra-thin glass 12 of equal thickness. A support laminate 14 is provided in the overhead region. The support laminate 14 is connected between the flexible display panel 11 and the screen protection layer 13, protruding from the edge of the flexible display panel 11, and is separated from the ultra-thin glass 12 of equal thickness to form a gap J.

[0057] In the flexible screen 10 of the embodiment of the present application, the screen protection layer 13 is connected to the side of the ultra-thin glass 12 of equal thickness facing away from the flexible display panel 11, and an overhead area is formed between the screen protection layer 13 and the flexible display panel 11, which is located outside the edge of the ultra-thin glass 12 of equal thickness. The overhead area is provided with a support laminate 14, and the support laminate 14 protrudes from the edge of the flexible display panel 11, so that the support laminate 14 can be used to stably support the screen protection layer 13 while the protruding support laminate 14 can be used to adapt to the connection with the frame of the foldable electronic device 100. It is necessary that, since the supporting laminate 14 and the ultra-thin glass 12 of equal thickness are spaced from each other, when subjected to external impact, the supporting laminate 14 can alleviate the impact force, thereby reducing the impact force on the ultra-thin glass 12 of equal thickness, reducing the risk of the ultra-thin glass 12 of equal thickness being broken, and then achieving the effect of improving the impact resistance. Moreover, under this structural setting, the thickness of the ultra-thin glass 12 of equal thickness is consistent at all locations, and there is no need to groove the ultra-thin glass 12 of equal thickness and fill the grooved positions, thereby simplifying the process and reducing costs. Therefore, this structure of the present application can take into account impact resistance while reducing costs.

[0058] Continuing with FIG4 , the side of the flexible screen 10 corresponding to the flexible display panel 11 facing away from the light-emitting side is connected to the flat plate portion P, and the portion of the support laminate 14 protruding from the flexible display panel 11 is connected to the step portion T. In this embodiment, the portion of the support laminate 14 protruding from the flexible display panel 11 refers to the portion of the support laminate 14 corresponding to the screen external expansion area WQ. It can be understood that since the support laminate 14 is provided on the side of the screen protective layer 13 facing the flexible display panel 11, the support laminate 14 can support the screen protective layer 13, and the portion of the support laminate 14 corresponding to the screen external expansion area WQ can be connected to the step portion T to improve the connection stability between the flexible screen 10 and the middle frame 20.

[0059] It should be noted that the outer edge of the supporting laminate 14 is spaced from the side wall of the step portion T, and there is a gap between the outer edge of the supporting laminate 14 and the side wall of the step portion T. Therefore, when the foldable electronic device 100 is hit, the force of the middle frame 20 is isolated by the gap and is not easily transmitted to the supporting laminate 14, thereby reducing the impact force on the flexible screen 10 and improving the anti-drop performance.

[0060] The flexible screen 10 and the hinge mechanism 30 can be connected via a first connector 100a, the flexible screen 10 and the flat panel portion P can be connected via a second connector 100b, and the flexible screen 10 and the step portion T can be connected via a third connector 100c. It should be noted that the first connector 100a, the second connector 100b, and the third connector 100c can be double-sided tape or hot melt adhesive. The type and number of these connectors are not limited. For example, the flexible screen 10 and the flat panel portion P are connected via two second connectors 100b.

[0061] As shown in FIG5 , in some embodiments, the flexible screen 10 further includes a filler 15 , which is disposed in gap J. In this embodiment, the material hardness of the filler 15 is less than that of the ultra-thin glass 12 of equal thickness. Thus, the filler 15 can act as a buffer, reducing the impact force transmitted from the support laminate 14 to the ultra-thin glass 12 of equal thickness, making the ultra-thin glass 12 of equal thickness less susceptible to shattering. Furthermore, the filler 15 fills gap J, thereby providing support for the screen protection layer 13 corresponding to the gap J. Therefore, the filler 15 reduces the risk of shattering the ultra-thin glass 12 of equal thickness while also providing support for the screen protection layer 13.

[0062] The filling member 15 is formed by curing the optical adhesive filling the gap J. Thus, during the processing, it is only necessary to fill the gap J with uncured optical adhesive, and then the filling member 15 filling the gap J can be obtained after the optical adhesive is cured.

[0063] As shown in Figure 6, in some embodiments, the flexible screen 10 further includes an ink layer 16, which is provided between the screen protection layer 13 and the supporting laminate 14. The ink layer 16 is used to prevent light leakage when the flexible display panel 11 emits light for display. In this embodiment, the position covered by the ink layer 16 corresponds to the black border area BM of the flexible screen 10. It can be understood that the black border area BM refers to the area outside the display area VA surrounding the flexible screen 10. The edge of the ink layer 16 close to the center of the flexible screen 10 serves as the dividing line between the black border area BM and the display area VA. When the flexible screen 10 is displaying, the display area VA emits light to display the picture, and the black border area BM does not display the picture under the shielding of the ink layer 16.

[0064] It should be noted that the ink layer 16 completely covers the gap J, so that the user cannot observe the gap J through the screen protection layer 13, nor can the user observe the filler 15 filled in the gap J, thereby maintaining the overall appearance and texture of the flexible screen 10.

[0065] Continuing with Figure 6 , the overlap width between the ink layer 16 and the uniform ultra-thin glass 12 is k1. 0.1mm≤k1≤0.5mm, for example, k1 is 0.1mm, 0.2mm, 0.3mm, 0.4mm, or 0.5mm. It will be understood that the overlap width between the ink layer 16 and the uniform ultra-thin glass 12 refers to the distance between the edge of the ink layer 16 near the center of the flexible screen 10 and the edge of the uniform ultra-thin glass 12. In this embodiment, setting the overlap width between the ink layer 16 and the uniform ultra-thin glass 12 within the range of 0.1mm≤k1≤0.5mm ensures that the ink layer 16 completely covers the gap J, placing the gap J within the black border area BM of the flexible screen 10. This prevents the gap J from being located within the display area VA of the flexible screen 10 and affecting the display quality. Furthermore, since the overlap area between the ink layer 16 and the uniform ultra-thin glass 12 is located in the black border area BM, a smaller overlap width is more conducive to reducing the width of the black border area BM. Therefore, by setting the overlapping area within the range of 0.1 mm ≤ k1 ≤ 0.5 mm, the width of the black border area BM can be minimized, thereby improving the visual effect of the foldable electronic device 100 .

[0066] Continuing with FIG6 , the width of the gap J is k2, where 0.1 mm ≤ k2 ≤ 0.5 mm. For example, k2 is 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm. Since the gap J is located in the black border region BM formed by the ink layer 16 covering the light-emitting side of the flexible display panel 11, the smaller the width of the gap J, the more conducive it is to reducing the width of the black border region BM. In this embodiment, the width of the gap J is set to 0.1 mm ≤ k2 ≤ 0.5 mm, which is conducive to reducing the width of the black border region BM. At the same time, the width of the gap J is greater than or equal to 0.1 mm, so that sufficient space is reserved between the supporting laminate 14 and the ultra-thin glass 12 of equal thickness, which is convenient for processing and ensures that the supporting laminate 14 and the ultra-thin glass 12 of equal thickness do not contact each other, so that the gap J between the two can be used to prevent the supporting laminate 14 from transmitting the impact force to the ultra-thin glass 12 of equal thickness, reducing the risk of the ultra-thin glass 12 of equal thickness being shattered, thereby improving the impact resistance of the flexible screen 10.

[0067] The overlapping width between the support laminate 14 and the flexible display panel 11 is k3, 0.2mm≤k3≤1mm. For example, k3 is 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.7mm or 1mm. It can be understood that the overlapping width between the support laminate 14 and the flexible display panel 11 refers to the distance between the inner edge of the support laminate 14 and the edge of the flexible display panel 11. The larger the overlapping width between the support laminate 14 and the flexible display panel 11, the greater the overlap between the support laminate 14 and the flexible display panel 11. Therefore, setting the overlapping width between the support laminate 14 and the flexible display panel 11 to 0.2mm≤k3≤1mm can ensure that there is sufficient overlap between the support laminate 14 and the flexible display panel 11, so as to improve the connection stability between the support laminate 14 and the flexible display panel 11. At the same time, under this setting, the overlapping width of the supporting laminate 14 and the flexible display panel 11 is set to be less than or equal to 1 mm, so that the ink layer 16 covering the side of the supporting laminate 14 facing away from the flexible display panel 11 has a small width in the portion corresponding to the supporting laminate 14 and the flexible display panel 11, which is conducive to reducing the width of the black border area BM.

[0068] Continuing with FIG6 , the support laminate 14 includes a substrate layer 14a and a pressure-sensitive adhesive layer 14b. The substrate layer 14a is connected to the flexible display panel 11 via the pressure-sensitive adhesive layer 14b. The material of the substrate layer 14a includes, but is not limited to, PET (Polyethylene terephthalate), transparent PI (Polyimide), or glass.

[0069] The flexible screen 10 also includes a first optical adhesive layer OCA1, which covers the ultra-thin glass 12 of uniform thickness and the support laminate 14 and connects the screen protection layer 13 to the ultra-thin glass 12 of uniform thickness and the support laminate 14. In this embodiment, the first optical adhesive layer OCA1 connects the ultra-thin glass 12 of uniform thickness to the screen protection layer 13, while also connecting the support laminate 14 to the screen protection layer 13.

[0070] The flexible screen 10 also includes a second optical adhesive layer (OCA2), through which a uniform ultra-thin glass 12 is connected to the flexible display panel 11. The uniform ultra-thin glass 12 is thinner than the second optical adhesive layer (OCA2). Thus, while the overall thickness of the uniform ultra-thin glass 12 and the second optical adhesive layer (OCA2) remains constant, the thinner the uniform ultra-thin glass 12, the better its bending performance, making the flexible screen 10 easier to bend.

[0071] Continuing with Figure 6 , in an embodiment where the support laminate 14 includes a substrate layer 14a and a pressure-sensitive adhesive layer 14b, the thickness of the substrate layer 14a is greater than the thickness of the pressure-sensitive adhesive layer 14b. Thus, given a given overall thickness of the support laminate 14, a thicker substrate layer 14a provides greater support. Therefore, when the reinforced support laminate 14 is connected to the midframe 20, the connection between the flexible screen 10 and the midframe 20 remains stable.

[0072] It should be noted that the flexible screen 10 may also include other structures. For example, as shown in Figure 7, a back film layer 17, a panel bottom protective layer 18, and a support member 19 are further provided on the back side (i.e., the side facing away from the display) of the flexible display panel 11. The structure of the flexible screen 10 is not described in detail here.

[0073] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the inventive concept of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A flexible screen, characterized in that: include: A flexible display panel having a light emitting side; Ultra-thin glass of equal thickness, connected to the light-emitting side of the flexible display panel, wherein the edge of the ultra-thin glass of equal thickness is located inside the edge of the flexible display panel; and A screen protection layer, connected to a side of the ultra-thin glass of equal thickness facing away from the flexible display panel, an edge of the screen protection layer is located outside the edge of the flexible display panel, an overhead area is formed between the screen protection layer and the flexible display panel, and the overhead area is located outside the edge of the ultra-thin glass of equal thickness; A supporting laminate is arranged in the overhead area, the supporting laminate is connected between the flexible display panel and the screen protection layer, the supporting laminate protrudes from the edge of the flexible display panel, and the supporting laminate and the ultra-thin glass of equal thickness are spaced from each other to form a gap.

2. The flexible screen according to claim 1, characterized in that: It also includes a filling piece, which is arranged in the gap, and the material hardness of the filling piece is less than the material hardness of the ultra-thin glass of equal thickness.

3. The flexible screen according to claim 2, characterized in that: The filling piece is formed by curing the optical glue filled in the gap.

4. The flexible screen according to claim 1, characterized in that: The invention also comprises an ink layer, wherein the ink layer is arranged between the screen protection layer and the supporting laminate, and the ink layer completely covers the gap.

5. The flexible screen according to claim 4, characterized in that: The overlapping width between the ink layer and the ultra-thin glass of equal thickness is k1, 0.1mm≤k1≤0.5mm.

6. The flexible screen according to claim 5, characterized in that: k1 is 0.1mm, 0.2mm, 0.3mm, 0.4mm or 0.5mm.

7. The flexible screen according to claim 1, characterized in that: The width of the gap is k2, 0.1mm≤k2≤0.5mm.

8. The flexible screen according to claim 7, characterized in that: k2 is 0.1mm, 0.2mm, 0.3mm, 0.4mm or 0.5mm.

9. The flexible screen according to claim 1 or 7, characterized in that: The overlapping width between the supporting stack and the flexible display panel is k3, 0.2mm≤k3≤1mm.

10. The flexible screen according to claim 9, characterized in that: k3 is 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.7mm or 1mm.

11. The flexible screen according to claim 1, characterized in that: The supporting laminate comprises a substrate layer and a pressure-sensitive adhesive layer, and the substrate layer is connected to the flexible display panel via the pressure-sensitive adhesive layer.

12. The flexible screen according to claim 11, characterized in that: The material of the substrate layer includes polyethylene terephthalate, transparent polyimide or glass.

13. The flexible screen according to claim 11 or 12, characterized in that: The thickness of the substrate layer is greater than the thickness of the pressure-sensitive adhesive layer.

14. The flexible screen according to claim 1, characterized in that: It also includes a first optical adhesive layer, which covers the ultra-thin glass of equal thickness and the supporting laminate, and connects the screen protection layer to the ultra-thin glass of equal thickness and the supporting laminate.

15. The flexible screen according to claim 1, characterized in that: It also includes a second optical adhesive layer, the ultra-thin glass of equal thickness is connected to the flexible display panel through the second optical adhesive layer, and the thickness of the ultra-thin glass of equal thickness is less than the thickness of the second optical adhesive layer.

16. The flexible screen according to claim 15, characterized in that: The supporting laminate comprises a substrate layer and a pressure-sensitive adhesive layer, the substrate layer is connected to the flexible display panel via the pressure-sensitive adhesive layer, and the thickness of the substrate layer is greater than the thickness of the pressure-sensitive adhesive layer.

17. The flexible screen according to claim 1, characterized in that: It also includes a back film layer, a panel bottom protection layer and a support member, and the back film layer, the panel bottom protection layer and the support member are sequentially arranged on the back side of the flexible display panel.

18. A foldable electronic device, characterized in that: Comprising the flexible screen as described in any one of claims 1-17.

19. The foldable electronic device according to claim 18, characterized in that: It also includes a middle frame and a hinge mechanism, the middle frame includes a first frame body and a second frame body, the hinge mechanism is connected between the first frame body and the second frame body, the flexible screen is connected to the first frame body and the second frame body, the flexible screen covers the hinge mechanism, the first frame body and the second frame body both have a flat plate portion and a step portion protruding from the flat plate portion, the side of the flexible screen corresponding to the flexible display panel facing away from the light emitting side is connected to the flat plate portion, and the part of the supporting laminate protruding from the flexible display panel is connected to the step portion.

20. The foldable electronic device according to claim 19, characterized in that: The outer edge of the support stack is spaced apart from the side wall of the step portion.

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