Panel, method of manufacturing thereof, cover panel, housing and applications

Abstract

The application relates to the technical field of electronic equipment, in particular to a plate, a preparation method thereof, a cover plate, a shell and application. The plate comprises a glass plate and a ceramic plate located at the periphery of the glass plate and connected with the glass plate through pouring and sintering of ceramic slurry; the material of the glass plate is aluminosilicate glass or sapphire glass; the main component of the ceramic plate is zirconium oxide. The two hard materials of the glass plate and the ceramic plate are combined into an integral whole, the glass plate is used for realizing the function of light transmission display through the transparent texture, the glass plate can be used for main screen display and can also be used for auxiliary screen display. Meanwhile, the ceramic plate is used for endowing the whole plate with good mechanical strength.

Description

Technical Field

[0001] This invention relates to the field of electronic equipment technology, and in particular to a plate, its preparation method, cover plate, housing, and application. Background Technology

[0002] Zirconia ceramics are characterized by high hardness, high toughness, resistance to breakage, wear resistance, excellent heat insulation, and high temperature resistance. Glass is characterized by high hardness, high temperature resistance, wear resistance, water resistance, and good transparency. Both are hard materials, and although they are widely used in many fields, it is difficult to combine them. Summary of the Invention

[0003] Based on this, the present invention provides a plate, its preparation method, a cover plate, a shell, and its application to solve the problem of difficult bonding of zirconia ceramics with glass.

[0004] The first aspect of this invention provides a sheet material. Its technical solution is as follows:

[0005] A sheet material includes a glass plate and a ceramic plate located around the glass plate and connected to the glass plate by casting and sintering a ceramic slurry.

[0006] The glass plate is made of aluminosilicate glass or sapphire glass;

[0007] The main component of the ceramic plate is zirconium oxide.

[0008] A second aspect of this invention provides a method for preparing a sheet material. The technical solution is as follows:

[0009] A method for preparing a board material includes the following steps:

[0010] A mold is provided, the mold having a cavity with a preset shape of a sheet material, the cavity having a central region and a peripheral region connected to the central region;

[0011] A glass substrate corresponding to the size of the central region is placed in the central region of the cavity, and the glass substrate is made of aluminosilicate glass or sapphire glass.

[0012] The ceramic slurry is poured into the peripheral area of ​​the cavity and filled. The main component of the ceramic slurry is zirconium oxide.

[0013] The glass substrate and ceramic slurry in the mold are sintered to form a glass plate, and a ceramic plate is formed around the glass plate, and then the mold is removed.

[0014] A third aspect of the present invention provides a cover plate comprising the above-described sheet material or a sheet material prepared by the above-described preparation method.

[0015] A fourth aspect of the present invention provides a housing comprising the above-described sheet material or a sheet material prepared by the above-described preparation method.

[0016] The fifth aspect of this invention provides an electronic device. Its technical solution is as follows:

[0017] An electronic device includes a display assembly and a housing;

[0018] The display assembly and the housing enclose a receiving space. The display assembly includes a cover plate and a display screen, with the cover plate located on the side of the display assembly away from the housing.

[0019] The cover plate is as described above; and / or the housing is as described above.

[0020] The sixth aspect of this invention provides a flexible electronic device. Its technical solution is as follows:

[0021] A flexible electronic device includes a first housing, a second housing, a pivot, a flexible display assembly, and a sub-display assembly;

[0022] The pivot is disposed between the first housing and the second housing, and the second housing can be rotatably connected to the first housing via the pivot to unfold or fold.

[0023] The flexible display assembly is disposed on the first housing and the second housing, and is located on the same side of the first housing and the second housing when the first housing and the second housing are unfolded.

[0024] The second housing is connected to a secondary display screen assembly, and when the first housing and the second housing are unfolded, the light-emitting surface of the secondary screen is opposite to the light-emitting surface of the flexible display screen.

[0025] The second housing is as described above.

[0026] Compared with traditional solutions, the present invention has the following advantages:

[0027] This invention uses the casting and sintering of ceramic slurry to form a ceramic plate on one hand, and tightly bond two rigid materials, a glass plate and a ceramic plate, into a whole on the other. The transparent texture of the glass plate enables light transmission for display purposes, suitable for both main and secondary screen displays. Simultaneously, the ceramic plate provides the overall material with good mechanical strength. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention and to more completely understand the present invention and its beneficial effects, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0029] Figure 1 This is a front view of a plate structure according to one embodiment of the present invention;

[0030] Figure 2 This is a top view of a plate structure according to one embodiment of the present invention;

[0031] Figure 3 This is a front view of a plate structure according to another embodiment of the present invention;

[0032] Figure 4 This is a front view of a plate structure according to another embodiment of the present invention;

[0033] Figure 5 This is a schematic flowchart of a method for preparing a sheet material according to an embodiment of the present invention;

[0034] Figure 6 This is a physical image of the sheet material used in Example 1. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to specific embodiments. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0037] the term

[0038] Unless otherwise stated or in case of contradiction, the terms or phrases used herein shall have the following meanings:

[0039] In this invention, terms such as "multiple", "various", "multiple times", and "multi-dimensional" are used, unless otherwise specified, to refer to a quantity greater than or equal to 2. For example, "one or more" means one or more types.

[0040] In this invention, terms such as "preferred," "better," "more suitable," and "ideal" are used only to describe implementation methods or embodiments with better effects, and should be understood not to limit the scope of protection of this invention.

[0041] In this invention, terms such as "further," "even more," and "particularly" are used for descriptive purposes to indicate differences in content, but should not be construed as limiting the scope of protection of this invention.

[0042] In this invention, the terms "optionally," "optionally," and "optional" refer to options that are optional, meaning they are selected from either "with" or "without." If multiple "optional" options appear in a technical solution, unless otherwise specified and there are no contradictions or mutual constraints, each "optional" option is independent.

[0043] In this invention, the terms "first aspect," "second aspect," "third aspect," and "fourth aspect," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity, nor should they be construed as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first," "second," "third," and "fourth," etc., serve only as a non-exhaustive enumeration and should be understood not to constitute a closed limitation on quantity.

[0044] In this invention, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In this invention, when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. It should also be understood that, in interpreting the connection or positional relationship of elements, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "approximately," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0046] In this invention, the technical features described in an open-ended manner include both closed-ended technical solutions composed of the listed features and open-ended technical solutions that include the listed features.

[0047] In this invention, an "electronic device" (or simply a "terminal") includes, but is not limited to, a device configured to receive / transmit communication signals via a wired connection (such as via a Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital Cable, Direct Cable Connection, and / or another data connection / network) and / or via a wireless interface (e.g., for cellular networks, Wireless Local Area Networks (WLANs), digital television networks such as DVB-H networks, satellite networks, AM-FM broadcast transmitters, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal," a "wireless terminal," or a "mobile terminal." Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that can combine cellular radiotelephone with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or handheld receivers or other electronic devices including radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0048] Zirconia ceramics and glass are both hard materials, making their combination difficult. One embodiment of the present invention provides a sheet material; please refer to [link to previous text]. Figure 1 and Figure 2 ,in, Figure 1 This is the front view of board 01. Figure 2 This is a top view of plate 01. Plate 01 includes a glass plate 10 and a ceramic plate 20 located around the glass plate 10 and connected to the glass plate 10.

[0049] The glass panels are made of aluminate glass or sapphire glass. The ceramic panels are primarily composed of zirconium oxide.

[0050] Aluminosilicate glass refers to glass whose main components are silicon dioxide and aluminum oxide, with the aluminum oxide content reaching over 20%. When the aluminum oxide content is high, aluminosilicate glass is also called high-alumina glass. High-alumina glass has relatively strong scratch resistance, impact resistance, crack resistance, and drop resistance.

[0051] Understandably, aluminosilicate glasses have the property of not melting at subsequent sintering temperatures.

[0052] Optionally, the glass panel is made of aluminosilicate glass, and the surface of the glass panel has an anti-glare texture.

[0053] Optionally, the glass plate is made of aluminosilicate glass or tempered glass.

[0054] Optionally, the glass plate is made of aluminosilicate glass, the surface of the glass plate has an anti-glare texture, and the glass plate is tempered glass.

[0055] Sapphire glass refers to synthetic sapphire, which has high hardness and excellent wear resistance.

[0056] In this embodiment, the main component of the ceramic plate is zirconium oxide.

[0057] This invention uses the casting and sintering of ceramic slurry to form a ceramic plate on one hand, and tightly bond two rigid materials, a glass plate and a ceramic plate, into a whole on the other. The transparent texture of the glass plate enables light transmission for display purposes, suitable for both main and secondary screen displays. Simultaneously, the ceramic plate provides the overall material with good mechanical strength.

[0058] In some traditional solutions, zirconia ceramics and glass are bonded together using adhesive. However, the adhesive strength provided by the adhesive is limited, and the resulting product may detach from the zirconia ceramics and glass after long-term use.

[0059] In this embodiment, the glass plate 10 and the ceramic plate 20 are directly connected. This allows for a tight bond between the glass plate and the ceramic plate without requiring an adhesive layer.

[0060] In this embodiment, the glass plate 10 and the ceramic plate 20 are smoothly connected.

[0061] Optionally, the thickness of the glass plate 10 can be 0.7mm to 0.8mm. The thickness of the ceramic plate 20 can be 0.7mm to 0.8mm.

[0062] In this embodiment, the thickness of the glass plate 10 is the same as the thickness of the ceramic plate 20. Compared to embedding a thinner glass plate within a thicker ceramic plate, the surface thickness of the plates in this embodiment is consistent.

[0063] The sheet material of this invention can be a flat sheet material or a curved sheet material, and the shape of the sheet material can be designed according to actual use needs. In this embodiment, as... Figure 1 As shown, board 01 is a flat board. Figure 3 In another embodiment shown, the plate 02 is a curved plate, and the plate 01 includes a flat portion and a curved portion, with the glass plate 20 located in the flat portion and the ceramic plate 21 located in the curved portion. Figure 4 In another embodiment shown, the plate 03 is a curved plate, including a flat part and a curved part. A portion of the glass plate 30 is located in the flat part, and the remaining portion is located in the curved part. The ceramic plate 31 is located in the curved part and is smoothly connected to the glass plate.

[0064] One embodiment of the present invention also provides a method for preparing a sheet material; please refer to [link to relevant documentation]. Figure 5 The process of preparing the sheet material in this embodiment is as follows: Figure 5 As shown, it includes the following steps:

[0065] S1. Provide molds

[0066] A mold is provided with a cavity having a preset sheet material shape, wherein the cavity of the mold has a central region and a peripheral region connected to the central region.

[0067] Optionally, the mold material may include wax. Based on a pre-designed sheet material shape drawing, the wax material is melted at high temperature, and then a mold with a cavity of the pre-designed sheet material shape is prepared using 3D inkjet printing technology.

[0068] Understandably, the preset board shape can be designed according to actual usage requirements; it can be a flat board shape or a curved board shape. The cavity with the preset board shape has a central area and a peripheral area connected to the central area, where the central area can correspond to the area requiring light transmission.

[0069] Understandably, the glass plate and ceramic plate can be integrally formed in the cavity of the mold, and by controlling the smoothness of the cavity wall, a smooth connection between the glass plate and the ceramic plate can be achieved.

[0070] In this embodiment, the thickness of the glass plate and the ceramic plate can be controlled by adjusting the size of the cavity. Optionally, the size of the cavity is controlled so that the thickness of the glass plate is 0.7mm to 0.8mm. The size of the cavity is also controlled so that the thickness of the ceramic plate is 0.7mm to 0.8mm.

[0071] Alternatively, the dimensions of the cavity can be controlled so that the thickness of the glass plate is the same as the thickness of the ceramic plate, and the thickness of the plates is consistent.

[0072] S2, Place the glass substrate

[0073] A glass substrate corresponding to the size of the central region is placed in the central region of the cavity.

[0074] The glass substrate is made of aluminosilicate glass or sapphire glass, as described above, and will not be repeated here.

[0075] Optionally, the glass substrate can be cut and CNC machined to make its dimensions correspond to the dimensions of the central area of ​​the cavity.

[0076] Understandably, when the glass substrate is sapphire glass, a diamond cutter can be used to cut the sapphire glass into small pieces to complete the cutting process, and then the small pieces can be CNC machined to complete the dimensional precision.

[0077] S3, pouring ceramic slurry

[0078] The ceramic slurry is poured into the peripheral area of ​​the cavity and filled. Since the central area of ​​the cavity is connected to the peripheral area, once the ceramic slurry has filled the peripheral area, it comes into direct contact with the glass substrate located in the central area.

[0079] In this embodiment, the main component of the ceramic slurry is zirconium oxide.

[0080] Optionally, the viscosity of the ceramic slurry at 25°C is 80000 mPa·s to 10000 mPa·s.

[0081] Optionally, the method for preparing ceramic slurry may include the following steps:

[0082] Ceramic powder is melted to prepare ceramic slurry.

[0083] S4, sintering

[0084] The glass substrate and ceramic slurry in the mold are sintered to form a glass plate, and a ceramic plate is formed around the glass plate.

[0085] Optionally, the sintering temperature is 1200℃~1300℃. During the sintering process, the glass substrate softens and is shaped to obtain a glass plate that meets the required structure. At the same time, through high temperature, the liquid phase components in the ceramic slurry gradually evaporate. Simultaneously, through sintering, the ceramic plate shrinks in volume, causing the glass plate and ceramic plate to be tightly bonded at the contact point, forming an integral structure.

[0086] In this embodiment, the mold is removed after sintering is completed.

[0087] Optionally, after demolding, the process may include post-processing of the resulting intermediate product.

[0088] Optionally, post-processing may be selected from CNC machining and / or polishing.

[0089] CNC machining can remove excess burrs from intermediate products, such as burrs at openings. It can also remove excess waste material around intermediate products.

[0090] Polishing can make intermediate products more lustrous. Polishing can be a combination of rough polishing and fine polishing.

[0091] When the glass substrate is made of aluminosilicate glass, after demolding, the process also includes steps of performing anti-glare etching and / or chemical strengthening treatment on the glass plate of the resulting intermediate product.

[0092] Anti-glare etching can be used to form anti-glare textures on intermediate products, resulting in glass plates with anti-glare textures on the surface.

[0093] Chemical strengthening treatment can enhance the mechanical properties of aluminosilicate glass, resulting in tempered glass sheets.

[0094] In some embodiments, the glass substrate is sapphire glass, and after demolding, the resulting intermediate product undergoes a post-processing step.

[0095] Optionally, post-processing may be selected from CNC machining and / or polishing.

[0096] In some embodiments, the glass substrate is high-alumina glass. After demolding, the intermediate product is subjected to CNC processing, polishing, anti-glare etching and chemical strengthening processes in sequence to obtain the sheet material.

[0097] The sheet material prepared by the above method can tightly bond glass and ceramic plates. The glass plate satisfies the light transmission requirement and can be used for both main and secondary displays. The ceramic plate provides a desirable ceramic texture. Furthermore, the method of casting ceramic slurry allows for various form factors, offering broader options in the CMF (Color, Material, Finish) field. The prepared sheet material exhibits high overall hardness and strength, showing great potential in the 3C electronics industry.

[0098] One embodiment of the present invention also provides a cover plate, the cover plate comprising the above-described sheet material or the sheet material prepared by the above-described preparation method.

[0099] The cover plate described above has all the advantages of the aforementioned plates, which will not be elaborated here.

[0100] One embodiment of the present invention also provides a housing, the housing comprising the above-described sheet material or the sheet material prepared by the above-described preparation method.

[0101] Adhesive, foam, and other auxiliary materials can be applied to the sheet material to attach it to the battery, thus attaching the casing to the battery.

[0102] The aforementioned shell possesses all the advantages of the aforementioned sheet metal, which will not be elaborated upon here.

[0103] One embodiment of the present invention also provides an electronic device. The provided electronic device includes a display screen assembly and a housing;

[0104] The display assembly and the housing enclose a receiving space. The display assembly includes a cover plate and a display screen, with the cover plate located on the side of the display assembly away from the housing.

[0105] The cover plate is as described above; and / or the housing is as described above.

[0106] The aforementioned electronic device possesses all the advantages of the aforementioned cover or housing, which will not be elaborated upon here.

[0107] It is understood that the specific type of electronic device of the present invention is not particularly limited, and those skilled in the art can flexibly choose according to the actual situation. For example, it can be a mobile phone, smartwatch, handheld computer, PDA, or laptop computer. The above-mentioned electronic device can be any of various types of computer system devices that are mobile or portable and perform wireless communication. Specifically, the electronic device can be a mobile phone or smartphone, portable gaming device, laptop computer, PDA, portable internet device, music player and data storage device, other handheld devices, and devices such as watches, in-ear headphones, pendants, and headphones. The electronic device can also be other wearable devices (e.g., head-mounted devices such as electronic glasses, electronic clothing, electronic bracelets, electronic necklaces, electronic tattoos, or smartwatches). In embodiments of the present invention, the above-mentioned electronic device can be a mobile phone.

[0108] One embodiment of the present invention also provides a flexible electronic device. The provided flexible electronic device includes a first housing, a second housing, a pivot, a flexible display assembly, and a sub-display assembly;

[0109] The pivot is disposed between the first housing and the second housing, and the second housing can be rotatably connected to the first housing via the pivot to unfold or fold.

[0110] The flexible display assembly is disposed on the first housing and the second housing, and is located on the same side of the first housing and the second housing when the first housing and the second housing are unfolded.

[0111] The second housing is connected to a secondary display screen assembly, and when the first housing and the second housing are unfolded, the light-emitting surface of the secondary screen is opposite to the light-emitting surface of the flexible display screen.

[0112] The second housing is as described above.

[0113] The aforementioned flexible electronic device possesses all the advantages of the aforementioned housing, which will not be elaborated upon here.

[0114] The following detailed description is provided with reference to specific embodiments. In this embodiment, the high-alumina glass is commercially available conventional high-alumina glass. The ceramic powder is commercially available conventional ceramic powder.

[0115] Example 1

[0116] This embodiment provides a sheet material and its preparation method, the steps of which are as follows:

[0117] S1. The wax material is melted at high temperature, and a mold with a square cavity is prepared by 3D inkjet printing process. The cavity has a depth of 0.8mm, a central area with a diameter of 0.65cm and a depth of 0.7mm, and a peripheral area connected to the central area.

[0118] S2. Take high-alumina glass and cut it into small round pieces with a diameter of 0.65cm and a thickness of 0.7mm. Place them in the central area of ​​the cavity of the above mold.

[0119] S3. Take the ceramic powder, melt it, and cool it to 25°C to obtain a ceramic slurry with a viscosity of 80000 mPa·s.

[0120] The ceramic slurry is poured into the periphery of the cavity and filled.

[0121] S4. Sinter the glass substrate and ceramic slurry in the mold at 1250℃. After sintering, demold the substrate and perform CNC machining and polishing on the intermediate product to obtain the sheet material. A picture of the sheet material is shown below. Figure 6 As stated above.

[0122] S5. The strength of the connection between the ceramic plate and the glass plate in the above-mentioned plate is tested. The test method is as follows: Take a stainless steel cylinder with a cross-sectional diameter of 1 cm, place the glass plate of the plate on top of the stainless steel cylinder, apply pressure in the weight direction to the plate, and record the ejection force when the glass plate and the ceramic plate separate. The ejection force in this embodiment is 370 N.

[0123] As can be seen, among the aforementioned materials, glass and ceramic plates can be tightly connected without the need for glue.

[0124] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0125] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A type of board material, characterized in that, The invention includes a glass plate and a ceramic plate located around the glass plate and connected to the glass plate by casting and sintering a ceramic slurry. The method for preparing the ceramic slurry includes the following steps: melting ceramic powder to prepare a ceramic slurry, wherein the viscosity of the ceramic slurry at 25°C is 80000 mPa·s to 10000 mPa·s, and the sintering temperature is 1200°C to 1300°C. The glass plate is made of aluminosilicate glass or sapphire glass; The main component of the ceramic plate is zirconium oxide; The thickness of the glass plate is the same as the thickness of the ceramic plate.

2. The sheet metal according to claim 1, characterized in that, The glass plate is made of aluminosilicate glass, and the surface of the glass plate has an anti-glare texture.

3. The sheet metal according to claim 1, characterized in that, The glass plate is made of aluminosilicate glass, and the glass plate is tempered glass.

4. A method for preparing a board material, characterized in that, Includes the following steps: A mold is provided, the mold having a cavity with a preset shape of a sheet material, the cavity having a central region and a peripheral region connected to the central region; A glass substrate corresponding to the size of the central region is placed in the central region of the cavity, and the glass substrate is made of aluminosilicate glass or sapphire glass. The ceramic slurry is poured into the peripheral area of ​​the cavity and filled. The main component of the ceramic slurry is zirconium oxide. The preparation method of the ceramic slurry includes the following steps: melting ceramic powder to prepare ceramic slurry. The viscosity of the ceramic slurry at 25°C is 80000 mPa·s to 10000 mPa·s. The glass substrate and ceramic slurry in the mold are sintered at a temperature of 1200℃~1300℃ to form a glass plate on the glass substrate and a ceramic plate around the glass plate, and then demolded. The dimensions of the cavity are controlled so that the thickness of the glass plate is the same as the thickness of the ceramic plate.

5. The method for preparing the plate according to claim 4, characterized in that, The mold is made of wax.

6. The method for preparing the plate according to claim 4, characterized in that, After demolding, the process also includes a post-processing step for the resulting intermediate product.

7. The method for preparing the plate according to claim 4, characterized in that, The glass substrate is made of aluminosilicate glass. After demolding, the process further includes an anti-glare etching treatment on the glass plate of the intermediate product.

8. The method for preparing the plate according to claim 4, characterized in that, The glass substrate is made of aluminosilicate glass. After demolding, the process further includes a step of chemically strengthening the glass plate of the intermediate product.

9. A cover plate, characterized in that, This includes the sheet material as described in any one of claims 1 to 3 or the sheet material prepared by the preparation method of any one of claims 4 to 8.

10. A housing, characterized in that, This includes the sheet material as described in any one of claims 1 to 3 or the sheet material prepared by the preparation method of any one of claims 4 to 8.

11. An electronic device, characterized in that, Includes display assembly and housing; The display assembly and the housing enclose a receiving space. The display assembly includes a cover plate and a display screen, with the cover plate located on the side of the display assembly away from the housing. The cover plate is as described in claim 9; and / or the housing is as described in claim 10.

12. A flexible electronic device, characterized in that, It includes a first housing, a second housing, a hinge, a flexible display assembly, and a secondary display assembly; The pivot is disposed between the first housing and the second housing, and the second housing can be rotatably connected to the first housing via the pivot to unfold or fold. The flexible display assembly is disposed on the first housing and the second housing, and is located on the same side of the first housing and the second housing when the first housing and the second housing are unfolded. The second housing is connected to a secondary display screen assembly, and when the first housing and the second housing are unfolded, the light-emitting surface of the secondary display screen assembly is opposite to the light-emitting surface of the flexible display screen assembly. The second housing is as described in claim 10.

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