Flexible screen components and electronic devices

Abstract

The present application relates to the field of folding screen technology, specifically to a flexible screen assembly and an electronic device. A flexible screen assembly includes a flexible screen layer, a support layer and an adhesive layer; the flexible screen layer includes a first bending surface and a first adhesive surface; the support layer includes a second bending surface and a second adhesive surface, the second bending surface corresponds to the first bending surface; the adhesive layer includes a first surface and a second surface opposite to each other, the first surface includes a third bending surface corresponding to and connected to the first bending surface and a third adhesive surface connected to the first adhesive surface, the second surface includes a fourth bending surface and a fourth adhesive surface, wherein the viscosity between the first bending surface and the third bending surface is less than the viscosity between the first adhesive surface and the third adhesive surface, and / or the viscosity between the second bending surface and the fourth bending surface is less than the viscosity between the second adhesive surface and the fourth adhesive surface. In the above manner, the internal stress of the support layer can be released from the third bending surface or the fourth bending surface, ensuring that the flexible screen layer is smooth and has no creases.

Description

Technical Field

[0001] The present application relates to the field of folding screen technology, and specifically to flexible screen components and electronic devices. Background Art

[0002] The trend of electronic devices such as mobile phones towards foldable screens is becoming more and more obvious, and the direction of competition is increasingly moving towards ultra-large and ultra-thin. However, the coordination of ultra-large and ultra-thin flexible screen layers with folding hinge mechanisms will cause many problems, such as the concentration of internal stress and creep of the flexible screen layer when the folding structure is unfolded, which makes the screen uneven, the light and shadow of the screen surface are not smooth, and even creases appear. Summary of the invention

[0003] The present application provides a flexible screen assembly and an electronic device.

[0004] The present application provides a flexible screen assembly, including:

[0005] The flexible screen layer comprises a first bending surface and a first bonding surface, wherein the first bending surface and the first bonding surface are located on the same side of the flexible screen layer;

[0006] A supporting layer, comprising a second bending surface and a second bonding surface, wherein the second bending surface and the second bonding surface are located on a side of the supporting layer close to the flexible screen layer, and the second bending surface corresponds to the first bending surface; and

[0007] The adhesive layer comprises a first surface and a second surface opposite to each other, wherein the first surface comprises a third bending surface corresponding to and connected to the first bending surface and a third adhesive surface connected to the first adhesive surface, and the second surface comprises a fourth bending surface corresponding to and connected to the second bending surface and a fourth adhesive surface connected to the second adhesive surface,

[0008] Wherein, the adhesion between the first bending surface and the third bending surface is smaller than the adhesion between the first bonding surface and the third bonding surface, and / or

[0009] The adhesion between the second bending surface and the fourth bending surface is smaller than the adhesion between the second bonding surface and the fourth bonding surface.

[0010] The present application also provides an electronic device, comprising: a flexible screen assembly; and

[0011] A folding hinge mechanism, wherein the flexible screen assembly is fixedly connected to the folding hinge mechanism via the supporting layer.

[0012] The flexible screen assembly provided by the present application makes the viscosity between the first bending surface and the third bending surface smaller than the viscosity between the first bonding surface and the third bonding surface, and / or the viscosity between the second bending surface and the fourth bonding surface smaller than the viscosity between the second bonding surface and the fourth bonding surface, so that when the flexible screen is unfolded, the first bending surface can be separated from the third bending surface or the second bending surface can be separated from the fourth bending surface, thereby allowing the internal stress of the supporting layer caused by creep to be released from the third bending surface or the fourth bending surface, ensuring that the flexible screen layer is smooth and has no creases. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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.

[0014] Figure 1 is a schematic diagram of a front view of an electronic device provided in an embodiment of the present application;

[0015] Figure 2 is a three-dimensional schematic diagram of a folding screen assembly provided in an embodiment of the present application;

[0016] Figure 3 yes Figure 2 An exploded schematic diagram of the folding screen assembly shown;

[0017] Figure 4 yes Figure 3 An exploded schematic diagram of the folding screen assembly from another angle is shown;

[0018] Figure 5 yes Figure 4 A partial enlarged schematic diagram of area A shown;

[0019] Figure 6 yes Figure 3 An exploded schematic diagram of another embodiment of a folding screen assembly is shown;

[0020] Figure 7 is an exploded schematic diagram of another embodiment of a folding screen assembly provided in an embodiment of the present application;

[0021] Figure 8 is an exploded schematic diagram of another embodiment of a folding screen assembly provided in an embodiment of the present application;

[0022] Fig. 9 is an exploded schematic diagram of another embodiment of the folding screen assembly provided in the embodiment of the present application;

[0023] Fig.10 yes Figure 1A schematic top view of a folding hinge mechanism in an electronic device shown;

[0024] Fig.11 It is a schematic diagram of the structure of an electronic device embodiment provided by the present application. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] Please refer to Figure 1 , Figure 1 1 is a schematic diagram of a front view of an electronic device provided by an embodiment of the present application. The present application provides an electronic device 100, which may include but is not limited to a flexible screen assembly 10 and a folding hinge mechanism 20, wherein the flexible screen assembly 10 is fixedly connected to the folding hinge mechanism 20.

[0028] Please refer to Figures 2 to 4 , Figure 2 is a three-dimensional schematic diagram of a folding screen assembly provided in an embodiment of the present application, Figure 3 yes Figure 2 An exploded schematic diagram of the folding screen assembly shown, Figure 4 yes Figure 3 An exploded diagram of the folding screen assembly shown from another angle.

[0029] The flexible screen assembly 10 may include a flexible screen layer 11, a support layer 12, and an adhesive layer 13 disposed between the flexible screen layer 11 and the support layer 12. The adhesive layer 13 is used to connect the flexible screen layer 11 and the support layer 12, so that the flexible screen layer 11 can be driven synchronously when the support layer 12 is bent. The material of the support layer 12 may be one of elastic steel sheet and carbon fiber, so as to have good toughness and elasticity; the material of the adhesive layer 13 may be one of silicone and foam, so as to bond and connect the flexible screen layer 11 and the support layer 12, and be able to bend with the flexible screen layer 11 and the support layer 12.

[0030] It should be noted that the terms "first", "second", and "third" in this application are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] The flexible screen layer 11 includes a first bending surface 111 and a first bonding surface 112 . The first bending surface 111 and the first bonding surface 112 are located on the same side of the flexible screen layer 11 . There are two first bonding surfaces 112 , which are located on both sides of the first bending surface 111 .

[0032] Please refer to Figure 5 , Figure 5 yes Figure 4 A partial enlarged schematic diagram of area A is shown. The support layer 12 includes a second bending surface 121 and a second bonding surface 122. The second bending surface 121 and the second bonding surface 122 are located on the side of the support layer 12 close to the flexible screen layer 11. There are two second bonding surfaces 122, which are respectively located on both sides of the second bending surface 121, wherein the second bending surface 121 is arranged corresponding to the first bending surface 111. The support layer 12 has a mesh structure 120, which can reduce the internal stress of the second bending surface 121 when folding or unfolding, thereby saving effort when the support layer 12 is folded or unfolded.

[0033] Furthermore, the mesh structure 120 is located within the range of the second bending surface 121, that is, the size of the second bending surface 121 is larger than the size of the mesh structure 120. The shape of the first bending surface 111 corresponds to the second bending surface 121 and overlaps with the first bending surface 111. The sizes of the first bending surface 111 and the second bending surface 121 are larger than the size of the mesh structure 120, which can reduce the internal stress of the flexible screen assembly when it is bent, thereby saving effort when the support layer 12 is folded or unfolded.

[0034] Optionally, the support layer 12 may include a multi-segment mesh structure 120, which is arranged on the support layer 12. On the one hand, it meets the structural strength requirements of the support layer 12, and on the other hand, it adjusts the internal stress of the bending surface area, making the folding of the support layer 12 easier and reducing the weight of the support layer 12.

[0035] Optionally, the material of the support layer 12 may be one of elastic steel and carbon fiber, so that the support layer 12 has elasticity to meet the requirement of repeated folding of the support layer 12 .

[0036] Please continue to refer to Figure 3 and Figure 4The adhesive layer 13 includes a first surface 131 and a second surface 132 opposite to each other. The first surface 131 includes a third bending surface 1311 and a third adhesive surface 1312. The third bending surface 1311 corresponds to and is connected to the first bending surface 111. There are two third adhesive surfaces 1312 and they are located on both sides of the third bending surface 1311. The two third adhesive surfaces 1312 respectively correspond to and are connected to the two first adhesive surfaces 112, which are used to connect and fix the adhesive layer 13 to the flexible screen layer 11. The second surface 132 includes a fourth bending surface 1321 and a fourth bonding surface 1322. The fourth bending surface 1321 corresponds to and is connected to the second bending surface 121. There are two fourth bonding surfaces 1322, which are located on both sides of the fourth bending surface 1321. The two fourth bonding surfaces 1322 correspond to and are connected to the two second bonding surfaces 122, respectively, and are used to connect and fix the bonding layer 13 to the supporting layer 12, thereby realizing the connection and fixation of the flexible screen layer 11 to the supporting layer 12.

[0037] The adhesive layer 13 may include one or more of silicone and foam adhesive. The adhesive layer 13 can be bent or unfolded along with the support layer 12 and the flexible screen layer 11, and can bond and connect the flexible screen layer 11 and the support layer 12, and can play a certain role in buffering connection.

[0038] Optionally, the size of the adhesive layer 13 is respectively equal to the size of the flexible screen layer 11 and the supporting layer 12, so as to bond and fix the flexible screen layer 11 and the supporting layer 12 to prevent edge cracking. It can be understood that the first bending surface 111, the second bending surface 121, the third bending surface 1311 and the fourth bending surface 1321 have the same size, and the first bonding area, the second bonding area, the third bonding area and the fourth bonding area have the same size, so as to make the connection between the flexible screen layer 11 and the supporting layer 12 stable and firm.

[0039] In the prior art, the first surface 131 is completely bonded to the flexible screen layer 11, and the second surface 132 is completely bonded to the support layer 12. When the support layer 12 drives the flexible screen layer 11 to unfold, the internal stress of the adhesive layer 13 is concentrated and creep occurs. Since the hardness of the support layer 12 is relatively high, the adhesive layer 13 drives the flexible screen layer 11 to creep, causing the flexible screen layer 11 to have uneven undulations, uneven light and shadow on the screen surface, and even creases.

[0040] In the present application, the viscosity between the first bending surface 111 and the third bending surface 1311 is smaller than the viscosity between the first bonding surface 112 and the third bonding surface 1312, so that when the flexible screen assembly is unfolded, the flexible screen layer 11 can be fixedly connected to the third bonding surface 1312 of the bonding layer 13 through the first bonding surface 112, and the first bending surface 111 can be separated from the third bending surface 1311 to release the internal stress generated by the bending creep of the bonding layer 13. And / or the viscosity between the second bending surface 121 and the fourth bending surface 1321 is smaller than the viscosity between the second adhesive surface 122 and the fourth adhesive surface 1322, so that when the flexible screen assembly is unfolded, the flexible screen layer 11 can be fixedly connected to the fourth adhesive surface 1322 of the adhesive layer 13 through the second adhesive surface 122, and the second bending surface 121 can be separated from the fourth bending surface 1321 to release the internal stress generated by the bending creep of the adhesive layer 13, thereby ensuring that the flexible screen layer 11 is smooth and has no creases.

[0041] Please refer to Figure 3 and Figure 4 Specifically, in the first embodiment, the third bending surface 1311 can be subjected to one or more processes of ultraviolet ray (UV) irradiation, oil spraying, powder spraying and film application to reduce or eliminate the viscosity of the third bending surface 1311, so that the viscosity of the third bending surface 1311 is less than the viscosity of the third bonding area, and then the viscosity between the third bending surface 1311 and the first bending surface 111 is less than the viscosity between the third bonding surface 1312 and the first bending surface 111, so as to achieve a fixed connection between the flexible screen layer 11 and the support layer 12. When the flexible screen assembly is unfolded, the third bending surface 1311 creeps due to internal stress, and since the first bending surface 111 is separated from the third bending surface 1311, the internal stress of the third bending surface 1311 is directly released and cannot be transmitted to the flexible screen layer 11, thereby ensuring that the flexible screen layer 11 is smooth and has no creases.

[0042] Please refer to Figure 6 , Figure 6 yes Figure 3An exploded schematic diagram of another embodiment of the folding screen assembly is shown. In Example 2, the fourth bending surface 1321 can be subjected to one or more processes of UV irradiation, oil spraying, powder spraying, and film application to reduce or eliminate the viscosity of the fourth bending surface 1321, so that the viscosity of the fourth bending surface 1321 is less than the viscosity of the fourth bonding area, and thus the viscosity between the fourth bending surface 1321 and the second bending surface 121 is less than the viscosity between the fourth bonding surface 1322 and the second bending surface 121, so as to achieve a fixed connection between the bonding layer 13 and the supporting layer 12. When the flexible screen assembly is unfolded, the fourth bending surface 1321 creeps due to internal stress. Since the fourth bending surface 1321 is separated from the second bending surface 121, the internal stress of the fourth bending surface 1321 is directly released and cannot be transmitted to the flexible screen layer 11, thereby ensuring that the flexible screen layer 11 is smooth and crease-free.

[0043] Please refer to Figure 3 and Figure 6 In the third embodiment, the third bending surface 1311 and the fourth bending surface 1321 can be subjected to one or more processes of UV irradiation, oil spraying, powder spraying and film pasting to reduce or eliminate the viscosity of the third bending surface 1311 and the fourth bending surface 1321, so that the viscosity of the third bending surface 1311 is less than the viscosity of the third adhesive surface 1312 and the viscosity of the fourth bending surface 1321 is less than the viscosity of the fourth adhesive surface 1322, thereby making the viscosity between the third bending surface 1311 and the first bending surface 111 less than the viscosity between the third adhesive surface 1312 and the first bending surface 111, and the viscosity between the fourth bending surface 1321 and the second bending surface 121 is less than the viscosity between the fourth adhesive surface 1322 and the second bending surface 121. When the flexible screen assembly is unfolded, the third bending surface 1311 and the fourth bending surface 1321 creep due to internal stress, and since the first bending surface 111 is separated from the third bending surface 1311 and the second bending surface 121 is separated from the fourth bending surface 1321, the internal stress of the third bending surface 1311 and the fourth bending surface 1321 is directly released and cannot be transmitted to the flexible screen layer 11, thereby ensuring that the flexible screen layer 11 is smooth and has no creases.

[0044] Please refer to Figure 7 , Figure 7It is an exploded schematic diagram of another embodiment of the folding screen assembly provided by the embodiment of the present application. In the fourth embodiment, the first bending surface 111 can be subjected to one or more processes of UV irradiation, oil spraying, powder spraying and film application to reduce or eliminate the viscosity of the first bending surface 111, so that the third bending surface 1311 has very little or no viscosity when it is bonded to the first bending surface 111. When the flexible screen assembly is unfolded, the third bending surface 1311 creeps due to internal stress. Since the first bending surface 111 is separated from the third bending surface 1311, the internal stress of the third bending surface 1311 is directly released and cannot be transmitted to the flexible screen layer 11, thereby ensuring that the flexible screen layer 11 is smooth and crease-free.

[0045] Please refer to Figure 8 , Figure 8 It is an exploded schematic diagram of another embodiment of the folding screen assembly provided in the embodiment of the present application. In the fifth embodiment, the second bending surface 121 can be subjected to one or more processes of UV irradiation, oil spraying, powder spraying and film pasting to reduce or eliminate the viscosity of the second bending surface 121, so that the fourth bending surface 1321 has very little or no viscosity when it is bonded to the second bending surface 121. When the flexible screen assembly is unfolded, the fourth bending surface 1321 creeps due to internal stress. Since the fourth bending surface 1321 is separated from the second bending surface 121, the internal stress of the fourth bending surface 1321 is directly released and cannot be transmitted to the flexible screen layer 11, thereby ensuring that the flexible screen layer 11 is smooth and crease-free.

[0046] Please refer to Fig. 9 , Fig. 9 It is an exploded schematic diagram of another embodiment of the folding screen assembly provided in the embodiment of the present application. In some other embodiments, two or more of the first bending surface 111, the second bending surface 121, the third bending surface 1311, and the fourth bending surface 1321 can be treated by one or more processes of UV irradiation, oil spraying, powder spraying, and film pasting to reduce or eliminate the viscosity of the bending surface. For example, the first bending surface 111 and the second bending surface 121 can be treated at the same time. In some other embodiments, the first bending surface 111 and the third bending surface 1311 can be treated at the same time, the first bending surface 111, the second bending surface 121, and the third bending surface 1311 can be treated at the same time, or the first bending surface 111, the second bending surface 121, the third bending surface 1311 and the fourth bending surface 1321 can be treated at the same time, which are not listed one by one here.

[0047] That is, at least one of the first bending surface 111, the second bending surface 121, the third bending surface 1311, and the fourth bending surface 1321 is treated by one or more processes including UV irradiation, oil spraying, powder spraying, and film sticking to reduce or eliminate the stickiness of the at least one bending surface.

[0048] The flexible screen assembly provided in the present application processes at least one of the first bending surface 111, the second bending surface 121, the third bending surface 1311 and the fourth bending surface 1321, so that the adhesion between the first bending surface 111 and the third bending surface 1311 is smaller than the adhesion between the first bonding surface 112 and the third bonding surface 1312, and / or the adhesion between the second bending surface 121 and the fourth bonding surface 1321 is smaller than the adhesion between the second bonding surface 122 and the fourth bonding surface 1322, thereby releasing the internal stress of the supporting layer 12 caused by creep from the third bending surface 1311 or the fourth bending surface 1321, thereby ensuring that the flexible screen layer 11 is smooth and has no creases.

[0049] Please refer to Fig.10 , Fig.10 yes Figure 1 A schematic top view of a folding hinge mechanism in an electronic device shown. The folding hinge mechanism 20 includes a hinge assembly 21 and a substrate 22 rotatably connected to both sides of the hinge assembly 21, the support layer 12 also includes a fifth bending surface 123 disposed opposite to the second bending surface 121 and a fifth bonding surface 124 disposed opposite to the second bonding surface 122, the fifth bending surface 123 is fixedly connected to the hinge assembly 21, and the fifth bonding surface 124 is fixedly connected to the substrate 22, which can be used to enable the folding hinge mechanism 20 to drive the support layer 12 to unfold or fold, and then drive the flexible screen assembly 10 to unfold or fold.

[0050] Please refer to Fig.11 Of course, the present application can also provide an electronic device 800, which includes an RF circuit 810, a memory 820, an input unit 830, a display unit 840 (i.e., the screen assembly 30 in the above embodiment), a sensor 850, an audio circuit 860, a WiFi module 870, a processor 880, and a power supply 880. Among them, the RF circuit 810, the memory 820, the input unit 830, the display unit 840, the sensor 850, the audio circuit 860, and the WiFi module 870 are respectively connected to the processor 880; the power supply 880 is used to provide power to the entire electronic device 100.

[0051] Specifically, the RF circuit 810 is used to receive and send signals; the memory 820 is used to store data instruction information; the input unit 830 is used to input information, and may specifically include a touch panel 831 and other input devices 832 such as operation buttons; the display unit 840 may include a display panel 841, etc.; the sensor 850 includes an infrared sensor, a laser sensor, etc., for detecting user approach signals, distance signals, etc.; the speaker 861 and the microphone (or microphone) 862 are connected to the processor 880 through the audio circuit 860 for receiving and sending sound signals; the WiFi module 870 is used to receive and transmit WiFi signals, and the processor 880 is used to process data information of the electronic device.

[0052] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A flexible screen assembly, characterized in that: include: The flexible screen layer comprises a first bending surface and a first bonding surface, wherein the first bending surface and the first bonding surface are located on the same side of the flexible screen layer; The supporting layer comprises a second bending surface and a second bonding surface, wherein the second bending surface and the second bonding surface are located on a side of the supporting layer close to the flexible screen layer, and the second bending surface corresponds to the first bending surface; and The adhesive layer comprises a first surface and a second surface opposite to each other, wherein the first surface comprises a third bending surface corresponding to and connected to the first bending surface and a third adhesive surface connected to the first adhesive surface, and the second surface comprises a fourth bending surface corresponding to and connected to the second bending surface and a fourth adhesive surface connected to the second adhesive surface, Wherein, the adhesion between the first bending surface and the third bending surface is smaller than the adhesion between the first bonding surface and the third bonding surface, and / or The adhesion between the second bending surface and the fourth bending surface is smaller than the adhesion between the second bonding surface and the fourth bonding surface.

2. The flexible screen assembly according to claim 1, characterized in that: At least one of the first bending surface, the second bending surface, the third bending surface, and the fourth bending surface is treated by one or more processes including UV irradiation, oil spraying, powder spraying, and film sticking to reduce or eliminate the stickiness of the at least one bending surface.

3. The flexible screen assembly according to claim 1 or 2, characterized in that: The supporting layer has a mesh structure.

4. The flexible screen assembly according to claim 3, characterized in that: The sizes of the first bending surface, the second bending surface, the third bending surface and the fourth bending surface are larger than the size of the mesh structure.

5. The flexible screen assembly according to claim 3, characterized in that: A plurality of sections of the mesh structure are arranged at intervals on the support layer.

6. The flexible screen assembly according to claim 3, characterized in that: The material of the support layer is one of elastic steel and carbon fiber.

7. The flexible screen assembly according to claim 1 or 2, characterized in that: The adhesive layer includes one or more of silica gel and foam glue.

8. The flexible screen assembly according to claim 1, characterized in that: The size of the adhesive layer corresponds to the size of the flexible screen layer and the support layer, so as to be used for bonding and connecting the flexible screen layer and the support layer.

9. An electronic device, characterized in that: include: The flexible screen assembly according to any one of claims 1 to 8; and A folding hinge mechanism, wherein the flexible screen assembly is fixedly connected to the folding hinge mechanism via the supporting layer.

10. The electronic device according to claim 9, characterized in that: The folding hinge mechanism includes a hinge assembly and a substrate rotatably connected to both sides of the hinge assembly. The support layer also includes a fifth bending surface arranged opposite to the second bending surface and a fifth bonding surface arranged opposite to the second bonding surface. The fifth bending surface is fixedly connected to the hinge assembly, and the fifth bonding surface is fixedly connected to the substrate.

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