CN114340279A - Folding screen cover plate, preparation method, folding screen and electronic equipment - Google Patents
Folding screen cover plate, preparation method, folding screen and electronic equipment Download PDFInfo
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- CN114340279A CN114340279A CN202011035716.7A CN202011035716A CN114340279A CN 114340279 A CN114340279 A CN 114340279A CN 202011035716 A CN202011035716 A CN 202011035716A CN 114340279 A CN114340279 A CN 114340279A
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 15
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- 238000000034 method Methods 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 18
- 238000005530 etching Methods 0.000 claims description 16
- 239000011241 protective layer Substances 0.000 claims description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 10
- 230000035939 shock Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 13
- 239000011521 glass Substances 0.000 description 11
- 230000001012 protector Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
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- 230000003287 optical effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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Abstract
The disclosure relates to a folding screen cover plate, a manufacturing method of the folding screen cover plate, a folding screen and electronic equipment, and belongs to the technical field of display. The folding screen apron that this disclosure provided compromises bending performance and shock resistance, and this folding screen apron includes first portion and second portion. The first portion is provided with a groove, the groove penetrates through the first portion along a set direction, and the set direction is perpendicular to the depth direction of the groove. The second portion is disposed in the groove, and the elastic modulus of the material of the second portion is greater than the elastic modulus of the material of the first portion.
Description
Technical Field
The disclosure relates to the technical field of display screens, in particular to a folding screen cover plate, a manufacturing method of the folding screen cover plate, a folding screen and electronic equipment.
Background
Folding screens are a popular development trend of current display screens. The folding screen has bending performance and can be used in a folding state and an unfolding state. In such a case, the cover plate of the folding screen is required to have the folding performance.
However, the folding screen cover panels provided in the related art have poor rigidity and impact resistance with satisfying folding performance, and have room for further improvement.
Disclosure of Invention
The disclosure provides a folding screen cover plate, a manufacturing method of the folding screen cover plate, a folding screen and electronic equipment, and aims to overcome technical defects in the related art.
In a first aspect, an embodiment of the present disclosure provides a foldable screen cover, where the cover includes: a first portion and a second portion;
the first part is provided with a groove, the groove penetrates through the first part along a set direction, and the set direction is perpendicular to the depth direction of the groove;
the second portion is disposed in the groove, and the elastic modulus of the material of the second portion is greater than the elastic modulus of the material of the first portion.
In one embodiment, the thickness at the groove is less than or equal to 50 μm and greater than or equal to 30 μm.
In one embodiment, the thickness of the first portion outside the groove is less than or equal to 400 μm and greater than or equal to 200 μm.
In one embodiment, a surface of the second portion is flush with a surface of the first portion.
In one embodiment, the cover plate further comprises a protection member connected to a surface of the first portion where the groove is formed, and the second portion is located between the protection member and the first portion.
In one embodiment, the difference between the refractive index of the second portion and the refractive index of the first portion has a value less than or equal to 0.5.
In a second aspect, the disclosed embodiments provide a method for manufacturing a folding screen, where the method is used to manufacture the folding screen cover plate provided in the first aspect, and the method includes:
modifying a preset area of a substrate, wherein the preset area penetrates through the substrate along a set direction;
etching the preset area to form a groove;
and filling the groove with filler, wherein the elastic modulus of the filler material is smaller than that of the substrate material.
In one embodiment, the modifying process for the preset area of the substrate includes: and scanning the preset area by adopting femtosecond laser pulse.
In one embodiment, the femtosecond laser pulse has a single pulse energy of 1000nJ to 2000 nJ;
the scanning speed of the femtosecond laser pulse is 1 cm/s-10 cm/s;
the diameter of a focusing light spot of the femtosecond laser pulse is 10-20 mu m.
In one embodiment, the etching the predetermined region to form a groove includes: and soaking the substrate in an etching solution with set concentration.
In one embodiment, the etching solution includes a hydrofluoric acid solution having a concentration of 8% to 15%.
In one embodiment, the filler includes at least one of propylene and epoxy.
In one embodiment, the method further comprises: and arranging a protective layer on one surface of the substrate, which is provided with the groove, wherein the protective layer covers the filler in the groove.
In a third aspect, an embodiment of the present disclosure provides a foldable screen, including: a folding screen display assembly, and a folding screen cover panel as provided in the first aspect;
the folded screen display assembly includes a foldable portion;
the folding screen cover plate covers the folding screen display assembly, and the groove of the first portion in the cover plate is arranged corresponding to the foldable portion.
In one embodiment, the folding screen cover includes a protective member that interfaces with the folding screen display assembly.
In a fourth aspect, the disclosed embodiments provide an electronic device including the folding screen provided in the third aspect.
The folding screen cover plate, the preparation method, the folding screen and the electronic equipment provided by the disclosure have the following beneficial effects:
the folding screen apron that this disclosed embodiment provided sets up the recess through first portion to pack the higher second portion of elasticity modulus in the recess, with the guarantee folding screen apron has good bending performance. In addition, the thickness of the part of the first part except the groove is thicker and is obviously thicker than that of an ultrathin glass cover plate adopted in the related technology, so that the shock resistance and the hardness of the cover plate of the folding screen are improved, and the structural safety of the folding screen is further ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram of a folded screen cover panel according to an exemplary embodiment;
FIG. 2 is a flow diagram illustrating a method of making a folding screen cover panel according to an exemplary embodiment;
FIG. 3 is a state diagram of step S201, shown in accordance with an exemplary embodiment;
FIGS. 4-1 and 4-2 are different state diagrams of step S202 shown according to an exemplary embodiment;
FIGS. 5-1 and 5-2 are different state diagrams of step S203 shown according to an exemplary embodiment;
FIG. 6 is a flow diagram illustrating a folded screen cover sheet fabrication process according to an exemplary embodiment;
FIG. 7 is a side view of a folding screen cover panel shown in accordance with an exemplary embodiment;
fig. 8 is a schematic diagram illustrating a structure of a folding screen according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this disclosure do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprises" or "comprising" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in the specification and claims of this disclosure, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein is meant to encompass any and all possible combinations of one or more of the associated listed items.
In the related art, an ultra-thin glass cover plate (ultra-thin glass) is used as a cover plate of the folding screen. The ultra-thin glass cover plate has good folding performance. However, the ultra-thin glass cover plate is thin as a whole, and the shock resistance of the ultra-thin glass cover plate is poor, so that the structural safety of the folding screen under the cover plate is difficult to ensure.
Based on the above situation, the embodiment of the disclosure provides a folding screen cover plate, a manufacturing method of the folding screen cover plate, a folding screen and electronic equipment.
In a first aspect, the disclosed embodiments provide a folding screen cover. FIG. 1 is a schematic diagram of a folded screen cover panel according to an exemplary embodiment. As shown in fig. 1, the folding-screen cover panel 100 includes: a first portion 110, a second portion 120, and a protector 130.
The first portion 110 includes a first face 110a and a second face 110b disposed opposite to each other. A groove 111 is provided on the first surface 110a, and the groove 111 penetrates the first portion 110 in the set direction X1. Wherein the setting direction X1 is perpendicular to the depth direction of the groove 111. At this time, the first portion 110 forms a groove 111 and first and second regions 112 and 113 located at both sides of the groove 111.
When applied to a folding screen, the groove 111 of the first portion 110 of the folding screen cover 100 is disposed parallel to the folding axis X2 of the folding screen, and the groove 111 is disposed corresponding to a bendable portion of the folding screen. The first area 112 and the second area 113 of the first portion 110 are disposed corresponding to the non-folded portion of the folded screen.
In this case, the thicknesses of the first portion 110 and the groove 111 (or the second portion 120) are configured to:
the thickness of the first portion 110 at the position where the groove 111 is provided is less than or equal to 50 μm and greater than or equal to 30 μm. For example, 33 μm, 35 μm, 37 μm, 40 μm, 43 μm, 45 μm, 47 μm, etc. Accordingly, the bending performance of the foldable portion in the folding screen is optimized by the thinned first portion 110.
The width of the groove 111 is arranged according to the folding screen folding radius. Optionally, the width of the groove 111 is greater than or equal to 2 rr (r is the bending radius of the foldable part of the folding screen). Therefore, the folding screen with the folding screen cover plate has good deformability.
The thickness of the portions of the first portion 110 other than the groove 111 (i.e., the first region 112 and the second region 113) is less than or equal to 400 μm and greater than or equal to 200 μm. For example, 220 μm, 260 μm, 300 μm, 340 μm, 380 μm, etc. Accordingly, the pencil strength and the impact strength of the non-folding part in the folding screen are guaranteed through the first area 112 and the second area 113, and the structural safety in the folding screen is guaranteed.
The second portion 120 is disposed in the groove 111. Optionally, the second portion 120 conforms to the inner wall of the recess 111. Equivalently, the second portion 120 is filled in the groove 111 of the first portion 110. Wherein the elastic modulus of the second portion 120 is greater than the elastic modulus of the first portion 110. Optionally, the material of the second portion 120 includes at least one of acrylic and epoxy, and the first portion 110 is made of glass. In this way, the mechanical properties of the folding screen cover plate at the corresponding groove 111 are improved by filling the second portion 120, and the folding screen cover plate is ensured to have good folding performance by the second portion 120 with a large elastic modulus so as to be matched with the foldable portion of the folding screen.
And, a difference between the refractive index of the second portion 120 and the refractive index of the first portion 110 has a value less than or equal to 0.05. For example, the refractive index of the first portion 110 is 1.5, and the refractive index of the second portion 120 is 1.46, 1.47, 1.48, 1.49, 1.51, 1.52, 1.53, 1.54, and the like.
In this way, the refractive indexes of the second portion 120 and the first portion 110 are similar, and accordingly, the deflection direction of the light rays incident in the same direction after passing through the corresponding groove 111 of the foldable screen cover is similar to the deflection direction of the light rays after passing through the corresponding first region 112 and the second region 113 of the foldable screen cover. In other words, the display effect of the folding screen adopting the folding screen cover plate is ensured in such a way, and the negative influence on the display effect of the folding screen caused by different materials of the first part 110 and the second part 120 is weakened. When the refractive indexes of the second portion 120 and the first portion 110 are the same, the display effect of the folding screen using the folding screen cover plate is the best.
Optionally, the outer surface of the second portion 120 is flush with the outer surface of the first portion 110. That is, the surface of the second portion 120 facing the opening of the groove 111 is flush with the surface of the first portion 110 around the groove 111. In this way, the provision of the protector 130 is facilitated.
The protector 130 is attached to a face (first face 110a) of the first portion 110 where the groove 111 is provided, and the second portion 120 is located between the protector 130 and the first portion 110. In the case where the outer surfaces of the first and second portions 110 and 120 are flush, the protector 130 is not pressed outward. Accordingly, it is not only convenient to provide the protector 130 on the first and second portions 110 and 120, but also to secure the structure of the protector 130.
To sum up, the folding screen cover plate provided by the embodiment of the present disclosure is provided with the groove 111 through the first portion 110, and the groove 111 is filled with the second portion 120 with a higher elastic modulus, so as to ensure that the folding screen cover plate has a good bending performance. Moreover, the thickness of the first portion 110 except the groove 111 is thicker and is obviously thicker than that of the ultra-thin glass cover plate adopted in the related art, so that the shock resistance and the hardness of the cover plate of the folding screen are improved, and the structural safety of the folding screen is further ensured. In addition, the visual effect of the whole folding screen cover plate is ensured by setting the refractive index of the second part 120.
Based on the folding screen cover plate, the embodiment of the disclosure also provides a manufacturing method of the folding screen cover plate. FIG. 2 is a flow chart illustrating a method of making a folding screen cover panel according to an exemplary embodiment. As shown in fig. 2, the method for manufacturing the folding screen cover plate includes:
step S201, a predetermined region of the substrate is modified, and the predetermined region penetrates through the substrate along a predetermined direction.
Optionally, the substrate is a glass substrate with a thickness of 200-400 μm. The base plate is used for forming a first part of the folding screen cover plate, and the preset area is used for forming a groove on the first part. The step S201 facilitates forming a high aspect ratio groove on the substrate by the modification process. And the preset area penetrates through the substrate along the set direction, so that the subsequently formed groove penetrates through the substrate along the set direction.
Fig. 3 is a state diagram illustrating step S201 according to an exemplary embodiment. As shown in fig. 3, step S201 includes: a preset area 302 is scanned with femtosecond laser pulses 301. And performing raster scanning on the preset area of the substrate through femtosecond laser pulses to modify the preset area. Taking a substrate as a glass substrate as an example, a laser modified area with a larger depth-to-width ratio is formed on the surface of a preset area through femtosecond laser pulse scanning, and the physical and chemical structures of the substrate in the area are changed, so that the substrate structure in the preset area is looser, and the chemical corrosion rate of the preset area is faster.
Wherein, the single pulse energy of the femtosecond laser pulse is 1000 nJ-2000 nJ, such as 1200nJ, 1400nJ, 1600nJ, 1800nJ, etc.; the scanning speed of the femtosecond laser pulse is 1 cm/s-10 cm/s, such as 2cm/s, 4cm/s, 6cm/s, 8cm/s and the like; the focused spot diameter of the femtosecond laser pulse is 10 μm to 20 μm, for example, 12 μm, 14 μm, 16 μm, 18 μm, or the like.
The larger the single pulse energy of the femtosecond laser pulse is, the deeper the depth of the scanning line formed in the preset region is. The slower the scanning speed of the femtosecond laser pulse is, the longer the irradiation time of the femtosecond laser pulse at the same position of the preset area is, and the deeper the depth of the formed scanning line is. The larger the diameter of the focused spot of the femtosecond laser pulse is, the larger the line width of the scanning line formed in the preset region is. Therefore, the aspect ratio of the scanning line formed in the preset area can be regulated by regulating the single pulse energy, the scanning speed and the diameter of the focusing spot of the femtosecond laser pulse.
Further, optionally, the femtosecond laser pulse used in step S201 has a center wavelength of 800nm to 1040nm, a pulse width of 50fs to 100fs, and a frequency of 1kHz to 250 kHz.
In addition, the substrate is shaped before the modification process. For example, the substrate is processed into a predetermined shape (e.g., a rectangle, a square, etc.) through processes of cutting, polishing, etc.
Step S202, etching the predetermined region to form a groove.
Fig. 4-1 and 4-2 are different state diagrams of step S202 shown according to an exemplary embodiment. Alternatively, as shown in fig. 4-1, step S202 includes: the substrate 401 is immersed in an etching solution 402 having a predetermined concentration, and the substrate 401 is etched by the etching solution 402. After step S201, the etching rate of the predetermined region is greater than the etching rate of the outer portion of the predetermined region of the substrate. In this manner, as shown in connection with fig. 4-2, the grooves 403 are formed on a predetermined area of the substrate 401 by soaking for a set length of time. Alternatively, taking the substrate as a glass substrate as an example, the etching solution includes a hydrofluoric acid solution having a concentration of 8% to 15% (e.g., 9%, 10%, 11%, 12%, 13%, 14%, etc.).
Step S203, filling the groove with filler, wherein the elastic modulus of the filler material is smaller than that of the substrate material.
Fig. 5-1 and 5-2 are different state diagrams of step S203 shown according to an exemplary embodiment. Optionally, as shown in fig. 5-1, an Ink Jet Printing (IJP) device 501 is used to add filler 502 into the recess 403. And, as shown in fig. 5-2, the filler 502 fills the groove 403.
Optionally, the filler includes at least one of propylene and epoxy. The material with the elastic modulus larger than that of the base plate is filled in the groove, so that the bending performance of the position, corresponding to the groove, of the folding screen cover plate is superior to that of the part, corresponding to the groove, of the folding screen cover plate. The light transmittance of the filler is greater than or equal to 96% (such as 97%, 98%, 99% and the like), and the refractive index is 1.45-1.55, so that the optical performance of the folding screen cover plate is optimized.
It should be noted that, in step S201, a scanning line with a large aspect ratio is formed in a preset region by femtosecond laser pulse scanning, and the depths of the formed different scanning lines are similar by adjusting and controlling parameters of the femtosecond laser pulse. Accordingly, the etching interface of the groove formed in step S202 is more flat. Further, the interface where the filler is bonded to the substrate is flatter in step S203. In conjunction with the folded panel cover structure shown in fig. 1, the interface where the first portion 110 and the second portion 120 meet is flatter, in such a way that the optical performance of the interface where the second portion 120 meets the first portion 110 can be optimized.
Fig. 6 is a flow diagram illustrating the manufacture of a folding screen cover panel according to an exemplary embodiment, and fig. 7 is a side view of a folding screen cover panel according to an exemplary embodiment.
As shown in fig. 6, the manufacturing method provided by the embodiment of the present disclosure further includes, after step S203: and step S204, arranging a protective layer on one surface of the substrate provided with the groove, wherein the protective layer covers the filler in the groove. As shown in fig. 7, the folding screen cover plate shown in fig. 7 is obtained through step S204. At this time, the protection layer 701 seals the filler 502 in the groove 403, so as to ensure the structural stability of the whole cover plate.
Optionally, the protective layer is a polysiloxane layer. In view of the above, the protective layer has good thermal oxidation stability, electrical insulation performance, weatherability and waterproof nature, the security of guarantee folding screen apron structure.
In summary, the method for manufacturing a foldable screen cover plate according to the embodiment of the present disclosure changes the performance of the predetermined region and the outer portion of the predetermined region in the substrate through modification, and accelerates the formation process of the groove and the surface performance of the formed groove through etching. And, pack the filler that elasticity modulus is greater than the base plate in the recess, compromise the bending performance and the shock resistance of folding screen apron recess department. The embodiment of the disclosure provides a new idea for manufacturing the folding screen cover plate, and the manufactured folding screen cover plate has good bending performance and impact resistance, so that the design requirement of the folding screen is met.
Based on the folding screen cover plate provided above, the embodiment of the present disclosure further provides a folding screen. Fig. 8 is a schematic diagram illustrating a structure of a folding screen according to an exemplary embodiment. As shown in fig. 8, the folding screen includes: a folding screen display assembly 200, and a folding screen cover panel 100 as provided above.
The folding screen display assembly 200 includes, among other things, a foldable portion 210 and a non-foldable portion 220 connected to the foldable portion 210. For example, the non-folding portions 210 are respectively disposed at both sides of the folding portion 210. Optionally, the foldable screen display assembly 200 is an Organic Light-Emitting quantum dot (OLED) display assembly.
The folding screen cover panel 100 overlies the folding screen display assembly 200. Wherein the groove 111 of the first portion 110 of the folding-screen cover panel 100 is disposed corresponding to the foldable portion 210. Since the portion of the folding screen cover 100 corresponding to the groove 111 has a good folding performance, the portion is provided corresponding to the foldable portion 210 of the foldable display module 200 to secure the folding performance of the entire folding screen.
The folding screen cover also includes a protective member 130, and the protective member 130 is connected to the folding screen display assembly 200. The protection piece 130 plays a role in buffering and supporting, the shock resistance of the folding screen is optimized, and the structural safety is guaranteed.
Based on the folding screen provided above, the embodiment of the present disclosure further provides an electronic device, which includes the folding screen provided above. Among them, electronic devices include but are not limited to: smart phones, tablet computers, desktop/laptop/handheld computers, notebook computers, ultra-mobile personal computers (UMPCs), Personal Digital Assistants (PDAs), Augmented Reality (AR)/Virtual Reality (VR) devices.
The electronic equipment provided by the embodiment of the disclosure has stronger structural safety, and the shock resistance of the folding screen is optimized under the condition of meeting the requirement of the folding screen on bending performance. When the electronic equipment is under the action of external force, the structure of the folding screen is not easy to damage.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (16)
1. A folding screen cover, said cover comprising: a first portion and a second portion;
the first part is provided with a groove, the groove penetrates through the first part along a set direction, and the set direction is perpendicular to the depth direction of the groove;
the second portion is disposed in the groove, and the elastic modulus of the material of the second portion is greater than the elastic modulus of the material of the first portion.
2. A folding screen cover sheet according to claim 1, wherein the thickness at the groove is less than or equal to 50 μm and greater than or equal to 30 μm.
3. A folding screen cover according to claim 2, wherein the thickness of said first portion outside said recess is less than or equal to 400 μm and greater than or equal to 200 μm.
4. The folding screen cover of claim 1 wherein a surface of the second portion is flush with a surface of the first portion.
5. The folding screen cover of claim 4 further comprising a protective member attached to a face of the first portion at which the recess is disposed, the second portion being located between the protective member and the first portion.
6. A folding screen cover according to any of claims 1 to 5, wherein the difference between the refractive index of the second portion and the refractive index of the first portion is less than or equal to 0.5.
7. A method for manufacturing a folding screen cover plate, wherein the method is used for manufacturing the folding screen cover plate as claimed in any one of claims 1 to 6, and the method comprises the following steps:
modifying a preset area of a substrate, wherein the preset area penetrates through the substrate along a set direction;
etching the preset area to form a groove;
and filling the groove with filler, wherein the elastic modulus of the filler material is smaller than that of the substrate material.
8. The method of claim 7, wherein the modifying the predetermined region of the substrate comprises: and scanning the preset area by adopting femtosecond laser pulse.
9. The method of claim 8, wherein the femtosecond laser pulses have a single pulse energy of 1000nJ to 2000 nJ;
the scanning speed of the femtosecond laser pulse is 1 cm/s-10 cm/s;
the diameter of a focusing light spot of the femtosecond laser pulse is 10-20 mu m.
10. The method of claim 7, wherein said etching said predetermined area to form a recess comprises: and soaking the substrate in an etching solution with set concentration.
11. The method of claim 10, wherein the etching solution comprises a hydrofluoric acid solution having a concentration of 8% to 15%.
12. The method of claim 7, wherein the filler comprises at least one of propylene and epoxy.
13. The method of claim 7, further comprising:
and arranging a protective layer on one surface of the substrate, which is provided with the groove, wherein the protective layer covers the filler in the groove.
14. A foldable screen, the foldable screen comprising: a folding screen display assembly, and a folding screen cover panel of any one of claims 1-6;
the folded screen display assembly includes a foldable portion;
the folding screen cover plate covers the folding screen display assembly, and the groove of the first portion of the folding screen cover plate corresponds to the foldable portion.
15. A foldable screen as recited in claim 14, wherein the foldable screen cover includes a protective member that interfaces with the foldable screen display assembly.
16. An electronic device, characterized in that the electronic device comprises a folding screen according to any one of claims 14 or 15.
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| CN202011035716.7A CN114340279A (en) | 2020-09-27 | 2020-09-27 | Folding screen cover plate, preparation method, folding screen and electronic equipment |
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| CN202011035716.7A CN114340279A (en) | 2020-09-27 | 2020-09-27 | Folding screen cover plate, preparation method, folding screen and electronic equipment |
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