Cover plate and preparation method thereof, touch screen and notebook computer

Abstract

The invention relates to the technical field of touch control display screens, and discloses a cover plate and a preparation method thereof, a touch control screen and a notebook computer, a plurality of raised first structures are prepared on the surface of a cover plate body, and then an AF coating is arranged on the surface, so that liquid such as water drops cannot directly enter gaps among the plurality of first structures; the contact angle of liquid such as water drops on the surface of the cover plate reaches 130-160 degrees, so that when the liquid such as the water drops is in contact with the surface of the cover plate, the liquid such as the water drops is spherical and is easy to roll down, the surface of the cover plate is not easy to be stained with liquid such as water stains, and electric devices in the cover plate are prevented from losing efficacy due to the fact that the electric devices are stained with external liquid. And the service lives of the touch screen and the notebook computer are prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch display screen, in particular to a cover plate and a preparation method thereof, a touch screen and a notebook computer. BACKGROUND

[0002] In recent years, the application scenarios of notebook computers in life are more and more extensive, and with the integration of touch function on the display screen, the input mode of the notebook computer is more convenient. The screen of this kind of notebook computer usually includes a display screen and a touch module integrated on the display screen. However, in many use scenarios, there are gaps in the display screen area due to the edges and other parts, which provide the possibility for external liquids such as water droplets to enter the inside of the display screen. These external liquids will come into contact with the electronic components inside the notebook computer, thereby causing problems such as touch function failure, reducing the service life of the display screen and the notebook computer. SUMMARY

[0003] The present application aims to solve at least one problem in the background art. To this end, the present application proposes a cover plate and a preparation method thereof, a touch screen and a notebook computer. The cover plate has good water resistance, so that the cover plate surface is not easy to be stained with water stains and other liquids, thereby preventing the electrical devices inside the cover plate from being caused to fail due to the staining of external liquids.

[0004] According to an embodiment of the first aspect of the present application, a cover plate includes a cover plate body having opposite first and second surfaces, the first surface of the cover plate body is provided with a protective layer, and an AF coating layer is provided above the protective layer. A plurality of first structures having a length are provided on the protective layer, and the water contact angle θ of the protective layer ranges from 130° to 160°.

[0005] As can be seen, by preparing a plurality of protruding first structures on the surface of the cover plate body, and then setting an AF coating layer on the surface, the liquid such as water droplets will not directly enter the gap between the plurality of first structures, and the contact angle of the liquid such as water droplets on the surface of the cover plate reaches 130°-160°. That is, when the liquid such as water droplets contacts the surface of the cover plate, it will present a spherical shape and thus be more likely to roll off, so that the surface of the cover plate is not easy to be stained with water stains and other liquids, thereby preventing the electrical devices inside the cover plate from being caused to fail due to the staining of external liquids.

[0006] According to another embodiment of the present application, the protective layer includes a substrate, and a plurality of first structures are uniformly distributed on the surface of the substrate.

[0007] According to another embodiment of the present application, the first structure is one or a combination of a long strip shape, a cylindrical shape, a square shape, a cuboid shape, a conical shape or a circular truncated cone shape.

[0008] According to another embodiment of the present application, the height H of the first structure ranges from 300nm to 1500nm, and the width W of the first structure ranges from 100nm to 500nm.

[0009] According to another embodiment of the present application, the cover plate further comprises an AR coating, which is arranged between the protective layer and the AF coating.

[0010] According to another embodiment of the present application, the thickness D of the AF coating ranges from 5nm to 10nm.

[0011] According to the second aspect of the present application, a method for manufacturing a cover plate comprises:

[0012] providing a cover plate body, which has opposite first and second surfaces;

[0013] forming a protective layer on the first surface of the cover plate body by a nano-imprinting process;

[0014] forming an AF coating on the protective layer.

[0015] Therefore, by forming a protective layer on the surface of the cover plate body and then arranging an AF coating on the surface of the protective layer, the contact angle of water droplets and other liquids on the surface of the cover plate can reach 130°-160°, that is, when water droplets and other liquids contact the surface of the cover plate, they will present a spherical shape and thus be more likely to roll off, so that the surface of the cover plate is less likely to be stained with water stains and other liquids, thereby preventing the electrical devices inside the cover plate from being disabled due to the staining of external liquids.

[0016] According to another embodiment of the present application, the protective layer is formed on the first surface of the cover plate body by a nano-imprinting process, which specifically comprises:

[0017] providing a preform plate, which has a plurality of preform structures thereon;

[0018] forming a photoresist layer on the first surface of the cover plate body, and bonding the photoresist layer with the preform plate until the photoresist layer forms a plurality of first structures complementary to the preform structures;

[0019] separating the preform plate from the formed photoresist layer.

[0020] According to the third aspect of the present application, a touch screen comprises an ink layer, a touch electrode layer, and the cover plate as described above, and the touch electrode layer is arranged between the ink layer and the cover plate.

[0021] According to the fourth aspect of the present application, a notebook computer comprises the touch screen as described above.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] The application discloses a cover plate and a preparation method thereof, a touch screen and a notebook computer. A plurality of first structures in the form of protrusions are prepared on the surface of the cover plate body, and then an AF coating is arranged on the surface, so that liquid such as water droplets cannot directly enter the gap between the plurality of first structures, and the contact angle of the liquid such as water droplets on the surface of the cover plate reaches 130-160 degrees. That is to say, when the liquid such as water droplets contacts the surface of the cover plate, the liquid such as water droplets will present a spherical shape and thus be more easily rolled off, so that the surface of the cover plate is not easily stained with liquid such as water stains, thereby preventing the electrical devices inside the cover plate from being caused to fail due to the staining of external liquid, and the service life of the touch screen and the notebook computer is improved.

[0024] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the application and, together with the description, serve to explain the principles of the application. In the drawings:

[0026] Figure 1 A schematic view of an embodiment of the cover plate provided by the present application;

[0027] Figure 2 A schematic view of an embodiment of the cover plate provided by the present application; Figure 1 An enlarged schematic view of position A in FIG. 1;

[0028] Figure 3 A schematic view of an embodiment of the touch screen provided by the present application;

[0029] Figure 4 A schematic view of an embodiment of the notebook computer provided by the present application;

[0030] Figure 5 A schematic view of the manufacturing process of the protective layer of the cover plate provided by the present application;

[0031] Figure 6 Another schematic view of the manufacturing process of the protective layer of the cover plate provided by the present application;

[0032] Figure 7 Still another schematic view of the manufacturing process of the protective layer of the cover plate provided by the present application;

[0033] Figure 8 A flowchart of an embodiment of the cover plate provided by the present application;

[0034] Figure 9 A flowchart of another embodiment of the cover plate provided by the present application;

[0035] Figure 10 Flowchart of another embodiment of the cover plate provided in the present application;

[0036] The meanings of the labels in the figures are as follows:

[0037] 1. notebook computer;

[0038] 10. touch screen;

[0039] 100. cover plate; 110. cover plate body; 111. first surface; 112. second surface;

[0040] 120. protective layer; 121. substrate; 122. first structure; 130. AF coating;

[0041] 200. ink layer;

[0042] 300. touch electrode layer;

[0043] 400. preform plate; 410. preform structure. DETAILED DESCRIPTION

[0044] Embodiments of the present application are described in detail below with reference to examples thereof illustrated in the accompanying drawings, wherein the same or like reference numerals indicate the same or like elements throughout the several views. The embodiments described below with reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as limiting the present application.

[0045] In the description of the present application, it should be understood that the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] To illustrate the cover plate and the preparation method thereof, the touch screen and the notebook computer provided in the present application, the following detailed description is made in combination with the drawings and the textual description of the embodiments.

[0048] The following reference is made to Figure 1 and Figure 2The cover plate 100 according to the embodiment of the first aspect of the present application is described as follows Figure 1 and Figure 2 As shown in the drawings, the cover plate 100 comprises a cover plate body 110, in particular, the cover plate body 110 has opposite first and second surfaces 111 and 112, further, a protective layer 120 is arranged on the first surface 111 of the cover plate body 110, the protective layer 120 serves to improve the water contact angle θ, so that it is more difficult for external liquid such as water droplets to adhere to the surface of the cover plate 100, thereby preventing the external liquid such as water droplets from entering the cover plate 100, wherein the protective layer 120 is provided with a plurality of first structures 122 having a length, by arranging a plurality of first structures 122 protruding from the cover plate body 110, the range of the water contact angle θ of the protective layer 120 is improved, further, the range of the water contact angle θ of the protective layer 120 is: 130°≥θ≥160°, thereby improving the overall waterproof capability of the cover plate 100, further, an AF (Anti Fingerprint) coating 130 is arranged above the protective layer 120, it can be understood that the AF coating 130 contains fluorine coating, which has extremely low surface tension, and can make the surface of the cover plate 100 have hydrophobic, oil-repellent, and anti-fouling properties, when the AF coating 130 is applied to the protective cover plate 100 of the tablet computer and notebook computer 1, etc., it can prevent the attachment of fingerprints and other oil stains, it can be seen that, according to the present scheme, a plurality of protruding first structures 122 are prepared on the surface of the cover plate body 110, and then an AF coating 130 is arranged on the surface, so that the liquid such as water droplets cannot directly enter the gap between the plurality of first structures 122, thereby making the contact angle of the liquid such as water droplets on the surface of the cover plate 100 reach 130°-160°, that is, when the liquid such as water droplets contacts the surface of the cover plate 100, it will present a spherical shape and thus be more easily rolled off, so that the surface of the cover plate 100 is not easy to be stained with liquid such as water stains, thereby preventing the electrical devices inside the cover plate 100 from being invalid due to the attachment of external liquid.

[0049] It should be noted that the AF coating 130 can be an organic fluorine compound, or a coating composed of an organic fluorine compound and a modifier, as long as it can make the cover plate 100 have corresponding hydrophobic, oil-repellent, and anti-fouling properties, the specific composition of the AF coating 130 is not limited here.

[0050] It should be noted that the water contact angle refers to a tangent line of a solid-liquid interface made at a liquid-solid intersection point, and the included angle θ between the tangent line on the liquid side and the solid-liquid intersection line, the contact angle of the liquid on the surface of the solid material is an important parameter for measuring the wetting performance of the liquid on the material surface, further, the water contact angle θ of the protective layer 120 can be, but is not limited to, 130°, 131°, 132°, 133°, 134°, 135°, 136°, 137°, 138°, 139°, 140°, 141°, 142°, 143°, 144°, 145°, 146°, 147°, 148°, 149°, 150°, 151°, 152°, 153°, 154°, 155°, 156°, 157°, 158°, 159°, 160°, and the like, it can be understood that the larger the water contact angle θ of the protective layer 120, the better the effect of preventing the liquid from entering the cover plate 100.

[0051] It should be noted that the cover plate body 110 can be one or more of glass, ceramic or sapphire.

[0052] According to an embodiment of the present application, as shown in Figure 2 The protective layer 120 includes a substrate 121, and a plurality of first structures 122 are uniformly arranged on the surface of the substrate 121, it can be understood that arranging a plurality of first structures 122 on the substrate 121 can form a bionic structure similar to the surface of a lotus leaf on the surface of the protective layer 120, so that the surface of the protective layer 120 has better hydrophobicity, thereby improving the waterproof, anti-fouling and anti-fingerprint performance of the surface of the cover plate 100, and uniformly arranging a plurality of first structures 122 on the surface of the substrate 121 can improve the uniformity of the hydrophobic performance of the surface of the cover plate 100, and simplify the manufacturing process and reduce the production cost.

[0053] According to an embodiment of the present application, as shown in Figure 2 The first structure 122 is one or a combination of a long strip shape, a cylinder, a square, a cuboid, a cone or a circular truncated cone, it can be understood that by arranging the first structure 122 as the above long strip shape and the like, the unevenness of the surface of the protective layer 120 can be increased, thereby improving the waterproof, anti-fouling and anti-fingerprint performance of the surface of the protective layer 120.

[0054] According to an embodiment of the present application, as shown in Figure 2As shown, the height H of the first structure 122 ranges from 300nm to 1500nm, specifically, W can be but not limited to 300nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1000nm, 1100nm, 1200nm, 1300nm, 1400nm, 1500nm, etc., it can be understood that the thinner the height H of the first structure 122 is, the better, but it is limited by the material and equipment, when the height H of the first structure 122 is less than 300nm, it will greatly improve the overall preparation difficulty and cost, at the same time, when the height H of the first structure 122 is greater than 1500μm, it will increase the overall thickness, which is not conducive to the light and thin of the protective layer 120, therefore, when the height H of the first structure 122 ranges from 300nm to 1500nm, the performance and light and thin can be considered, and the preparation cost can be reduced, further, the width W of the first structure 122 ranges from 100nm to 500nm, specifically, W can be but not limited to 100nm, 150nm, 200nm, 250nm, 300nm, 350nm, 400nm, 450nm, 500nm, etc., it can be understood that the smaller the width W of the first structure 122 is, the better, so that the first structure 122 further presents an elongated type, thereby increasing the unevenness of the protective layer 120, but it is limited by the material and equipment, when the width W of the first structure 122 is less than 100nm, it will greatly improve the overall preparation difficulty and cost, at the same time, when the width W of the first structure 122 is greater than 500μm, it will not be conducive to the first structure 122 to present an elongated type, therefore, when the width W of the first structure 122 ranges from 300nm to 1500nm, the performance and overall structure coordination can be considered, and the preparation cost can be reduced.

[0055] According to an embodiment of the present application, as shown in 1 and Figure 2 The cover plate 100 further comprises an AR (Anti-Reflection) coating (not shown in the figure), further, the AR coating is arranged between the protective layer 120 and the AF coating 130, it can be understood that by adding the AR coating, the incident light can be enhanced and the reflected light can be weakened, which plays a role of increasing the transmittance, and the display effect is clearer.

[0056] It should be noted that the cover plate 100 can further comprise other film layers, by arranging different film layers, the overall performance can be better.

[0057] According to an embodiment of the present application, as shown in Figure 1 and Figure 2As shown, the thickness D of the AF coating 130 ranges from 5 nm to 10 nm, and specifically, D can be, but is not limited to, 5 nm, 6 nm, 7 nm, 8 nm, 9 nm, 10 nm, etc. It can be understood that the smaller the thickness D of the AF coating 130, the better the overall lightness and thinness. However, the thickness D of the AF coating 130 is limited by the material and equipment. When the thickness D of the AF coating 130 is less than 5 nm, the overall preparation difficulty and cost will be greatly increased. When the thickness D of the AF coating 130 is greater than 10 μm, the overall lightness and thinness will be adversely affected. Therefore, when the thickness D of the AF coating 130 ranges from 5 nm to 10 nm, the performance and overall structural coordination can be considered, and the preparation cost can be reduced.

[0058] Reference will now be made to the drawings Figure 3 A touch screen 10 according to an embodiment of the second aspect of the present application is described as follows, Figures 1-3As shown, the touch screen 10 comprises an ink layer 200, a touch electrode layer 300 and a cover plate 100, the touch electrode layer 300 is arranged between the ink layer 200 and the cover plate 100, specifically, the cover plate 100 comprises a cover plate body 110, and the cover plate body 110 has opposite first and second surfaces 111 and 112, further, a protective layer 120 is arranged on the first surface 111 of the cover plate body 110, the protective layer 120 serves to improve the water contact angle θ, so that it is more difficult for external liquids such as water droplets to adhere to the surface of the cover plate 100, thereby playing a role of isolating external liquids such as water droplets from the cover plate 100, wherein the protective layer 120 is provided with a plurality of first structures 122 having a length, by arranging a plurality of first structures 122 protruding from the cover plate body 110, the range of the water contact angle θ of the protective layer 120 is improved, further, the range of the water contact angle θ of the protective layer 120 is: 130°≥θ≥160°, thereby improving the overall waterproof capability of the cover plate 100, further, an AF (Anti Fingerprint) coating is arranged above the protective layer 120, it can be understood that the AF coating 130 contains fluorine coating, has extremely low surface tension, and can make the surface of the cover plate 100 have hydrophobic, oil-repellent, anti-fouling and other properties, when the AF coating 130 is applied to the protective cover plate 100 of the touch screen 10, it can prevent the adhesion of fingerprints and other oil stains, it can be seen that, by preparing a plurality of protruding first structures 122 on the surface of the cover plate body 110, and then arranging the AF coating 130 on the surface, the liquid such as water droplets cannot directly enter the gap between the plurality of first structures 122, thereby making the contact angle of the liquid such as water droplets on the surface of the cover plate 100 reach 130°-160°, that is, when the liquid such as water droplets contacts the surface of the cover plate 100, it will present a spherical shape and thus be more easily rolled off, so that the surface of the cover plate 100 is not easy to be stained with liquid such as water stains, thereby preventing the touch electrode layer 300 inside the cover plate 100 from being invalid due to the adhesion of external liquids, improving the hydrophobic, oil-repellent, anti-fouling and other properties of the touch screen 10, and thereby improving the service life thereof.

[0059] It should be noted that the touch electrode layer 300 can comprise a self-capacitive electrode layer or a mutual-capacitive electrode layer, preferably, the touch electrode layer 300 is a mutual-capacitive electrode layer, and the touch electrode layer 300 can specifically comprise a first electrode layer (not shown in the figure) and a second electrode layer (not shown in the figure), wherein an insulating layer (not shown in the figure) is arranged between the first electrode layer and the second electrode layer, and the insulating layer is used to electrically isolate the first electrode layer and the second electrode layer.

[0060] The notebook computer 1 according to the third aspect of the present application will be described below with reference to Figure 4 The notebook computer 1 according to the third aspect of the present application will be described below with reference to Figures 1-4As shown, the notebook computer 1 includes a touch screen 10, which includes an ink layer 200, a touch electrode layer 300, and a cover plate 100. The touch electrode layer 300 is arranged between the ink layer 200 and the cover plate 100. Specifically, the cover plate 100 includes a cover plate body 110, and the cover plate body 110 has opposite first and second surfaces 111 and 112. Further, a protective layer 120 is arranged on the first surface 111 of the cover plate body 110. The protective layer 120 serves to improve the water contact angle θ, so that it is more difficult for external liquids such as water droplets to adhere to the surface of the cover plate 100, thereby preventing external liquids such as water droplets from entering the cover plate 100. The protective layer 120 has a plurality of first structures 122 with lengths. The plurality of first structures 122 protrude from the cover plate body 110, thereby improving the range of the water contact angle θ of the protective layer 120. Further, the range of the water contact angle θ of the protective layer 120 is 130°≥θ≥160°, thereby improving the overall waterproof capability of the cover plate 100. Further, an AF (Anti Fingerprint) coating layer is arranged above the protective layer 120. It can be understood that the AF coating layer 130 contains fluorine coating, has extremely low surface tension, and can make the surface of the cover plate 100 have hydrophobic, oil-repellent, and anti-fouling properties. When the AF coating layer 130 is applied to the protective cover plate 100 of the touch screen 10 of the notebook computer 1, it can prevent the adhesion of fingerprints and other oil stains. As can be seen, the plurality of first structures 122 protrude from the surface of the cover plate body 110, and the AF coating layer 130 is arranged on the surface, so that external liquids such as water droplets cannot directly enter the gap between the plurality of first structures 122. Further, the contact angle of external liquids such as water droplets on the surface of the cover plate 100 reaches 130°-160°. That is, when external liquids such as water droplets contact the surface of the cover plate 100, they will form a spherical shape and thus be more likely to roll off, so that the surface of the cover plate 100 is less likely to be stained with liquids such as water stains. Therefore, the internal electrical structures of the notebook computer 1 are prevented from being damaged due to the adhesion of external liquids, the hydrophobic, oil-repellent, and anti-fouling properties of the surface of the touch screen 10 of the notebook computer 1 are improved, and the service life of the notebook computer 1 is improved.

[0061] Reference will now be made to Figures 5-10 A method for manufacturing a cover plate 100 according to the fourth aspect of the present application is described as follows. Figure 8 As shown, the method specifically includes the following steps:

[0062] Step S100: providing a cover plate body 110, which has opposite first and second surfaces 111 and 112.

[0063] Specifically, the first surface 111 of the cover plate body 110 is a side surface closer to a user than the second surface 112. Further, the cover plate body 110 can be one or more of glass, ceramic, or sapphire.

[0064] Step S200: forming a protective layer 120 on the first surface 111 of the cover plate body 110 by a nano-imprinting process.

[0065] Specifically, the protective layer 120 is provided with a plurality of first structures 122 having a length. By providing the protective layer 120 on the first surface 111 of the cover plate body 110 and providing a plurality of first structures 122 protruding from the cover plate body 110 on the protective layer 120, the range of the water contact angle θ of the protective layer 120 is improved, and it is more difficult for external liquids such as water droplets to adhere to the surface of the cover plate 100, thereby improving the hydrophobic, oil-repellent, and anti-fouling properties of the cover plate 100, and playing a role of isolating external liquids such as water droplets from the cover plate 100.

[0066] Step S300: forming an AF coating 130 above the protective layer 120.

[0067] Specifically, the AF (Anti Fingerprint) coating can be prepared by evaporation or spraying.

[0068] Specifically, the AF coating 130 contains fluorine paint and has extremely low surface tension, so that the cover plate 100 has hydrophobic, oil-repellent, and anti-fouling properties. When the AF coating 130 is on the protective cover plate 100 of a tablet computer and a notebook computer 1, it can prevent the attachment of fingerprints and other stains.

[0069] Therefore, according to the present scheme, the protective layer 120 is prepared on the surface of the cover plate body 110, and then the AF coating 130 is prepared on the protective layer 120, so that external liquids such as water droplets cannot directly enter the cover plate body 110, and the contact angle of the water droplets on the surface of the cover plate 100 reaches 130°-160°. That is, when the water droplets contact the surface of the cover plate 100, they will form a spherical shape and thus be more likely to roll off, so that the surface of the cover plate 100 is not easily stained with water stains and other liquids, thereby preventing the electrical devices inside the cover plate 100 from being damaged due to the attachment of external liquids.

[0070] According to one embodiment of the present application, as shown in Figures 5-7 and Figure 9 Step S200: forming a protective layer 120 on the first surface 111 of the cover plate body 110 by a nano-imprinting process, specifically comprising the steps of:

[0071] Step S210: providing a preform plate 400, the preform plate 400 being provided with a plurality of preform structures 410;

[0072] Specifically, the preform plate 400 can be a material with a certain hardness. Electron beam etching and other methods can be used to process the required preform structure 410 on the preform plate 400 as a template. It can be understood that the diffraction limit of electrons is much smaller than that of photons, so the resolution can be much higher than that of photolithography.

[0073] Step S220: A photoresist layer is formed on the first surface 111 of the cover plate body 110, and the photoresist layer is bonded to the preform 400 until the photoresist layer forms a plurality of first structures 122 that are complementary to the preform 410.

[0074] Specifically, photoresist is applied to the first surface 111 of the cover plate body 110 to form a photoresist layer, and then the preform 400 is pressed on its surface, and a pattern complementary to the preform 410 is transferred onto the photoresist layer by applying pressure.

[0075] Step S230: Separate the preform 400 from the formed photoresist layer.

[0076] Specifically, after the first structure 122 is formed, ultraviolet light is used to cure the photoresist, which will eventually separate the preform 400 from the formed photoresist layer. Further, after separating the preform 400 from the formed photoresist layer, the photoresist that was not completely removed in the previous step can be etched away with an etching solution. Then, chemical etching is used for processing, and after completion, all photoresist is removed.

[0077] It can be seen that, through nanoimprinting and photolithography, a high-precision protective layer 120 can be formed on the first surface 111 of the cover plate body 110. The protective layer 120 can have a nanoscale first structure 122, thereby increasing the range of the water contact angle θ of the protective layer 120 and improving the overall waterproof capability of the cover plate 100.

[0078] According to one embodiment of the present invention, such as Figure 10 As shown, between step S200: forming a protective layer 120 on the first surface 111 of the cover plate body 110 by a nanoimprinting process, and step S300: forming an AF coating 130 on the protective layer 120, the following steps are also included:

[0079] Step S201: Form an AR coating over the protective layer 120.

[0080] Specifically, the AR (Anti-Refletance) coating can be prepared by vapor deposition or sputtering. It can be understood that by preparing the AR coating on the protective layer 120, the incident light can be enhanced and the reflected light can be reduced, thereby improving the light transmittance and making the display effect clearer.

[0081] The cover plate, the preparation method thereof, the touch screen and the notebook computer provided by the present application are preferred embodiments, and should not be understood as a limitation on the protection scope of the present application. Those skilled in the art should know that various improvements or replacements can be made without departing from the concept of the present application, and all the improvements or replacements should be within the protection scope of the present application, that is, the protection scope of the present application should be subject to the claims.

[0082] The above-mentioned embodiments and features in the embodiments can be combined with each other without conflict.

Claims

1. A cover plate, characterized in that, Includes a cover plate body, the cover plate body having opposing first and second surfaces, the first surface of the cover plate body is provided with a protective layer, and an AF coating is provided on the protective layer, wherein the protective layer is provided with a plurality of first structures having length, and the water contact angle θ of the protective layer is in the range of: 130°≥θ≥160°.

2. The cover plate as described in claim 1, characterized in that, The protective layer includes a substrate, and a plurality of the first structures are evenly distributed on the surface of the substrate.

3. The cover plate as described in claim 1, characterized in that, The first structure is one or more of the following: a strip, a cylinder, a cube, a cuboid, a cone, or a frustum.

4. The cover plate as described in claim 1, characterized in that, The height H of the first structure is in the range of 300nm≤H≤1500nm, and the width W of the first structure is in the range of 100nm≤W≤500nm.

5. The method for preparing the cover plate as described in claim 1, characterized in that, The cover plate also includes an AR coating, which is disposed between the protective layer and the AF coating.

6. The method for preparing the cover plate as described in claim 1, characterized in that, The thickness D of the AF coating is in the range of 5nm ≤ D ≤ 10nm.

7. A method for preparing a cover plate, characterized in that, include A cover plate body is provided, the cover plate body having opposing first and second surfaces; A protective layer is formed on the first surface of the cover plate body by a nanoimprinting process; An AF coating is formed over the protective layer.

8. The method for preparing the cover plate as described in claim 7, characterized in that, A protective layer is formed on the first surface of the cover plate body using a nanoimprinting process, specifically including: A precast slab is provided, the precast slab having multiple precast structures; A photoresist layer is formed on the first surface of the cover plate body, and the photoresist layer is bonded to the preform until the photoresist layer forms a plurality of first structures that are complementary to the preform structure. The preform is separated from the formed photoresist layer.

9. A touch screen, characterized in that, It includes an ink layer, a touch electrode layer, and a cover plate as described in any one of claims 1-6, wherein the touch electrode layer is disposed between the ink layer and the cover plate.

10. A laptop computer, characterized in that, Including the touch screen as described in claim 9.

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