Production method of protective substrate and protective glass, camera module and electronic equipment

Abstract

The embodiment of the invention provides a protective substrate, a production method of protective glass, a camera module and electronic equipment, and the method comprises the following steps: attaching a protective film with a hollow hole to the surface of a transparent base material to obtain a first base material; the area in the hollow hole corresponds to the anti-glare hollow area of the transparent base material; treating the surface, with the protective film, of the first base material with a first liquid to obtain a second base material; the first liquid is configured to attach to the transparent substrate and dissociate the anti-glare liquid or anti-glare film; tearing off the protective film of the second base material to obtain a third base material; and carrying out anti-glare coating treatment on one surface, from which the protective film is torn off, of the third base material. According to the embodiment of the invention, the requirement of the anti-glare hollowed-out area on the attaching precision of the protective film is reduced, and the position deviation of the anti-glare hollowed-out area is avoided to a certain extent.

Description

Technical Field

[0001] The present application belongs to the technical field of substrate processing, and more specifically, relates to a production method of a protective substrate, protective glass, a camera module and an electronic device. Background Art

[0002] Since the anti-glare film affects the function of the camera module, when the surface of the cover glass CG (Cover Glass) of the camera module needs to be treated with the anti-glare film, the protective film is attached to the area corresponding to the camera hole on the surface of the protective glass. This attachment method has high requirements on the attachment accuracy and can easily cause deviations in the position of the anti-glare hollow area. Summary of the invention

[0003] In order to at least to some extent improve or solve the technical problem in the related art that the anti-glare hollow area has high requirements for the attachment accuracy of the protective film, the embodiment of the present application aims to provide a production method of a protective substrate, a protective glass, a camera module and an electronic device, so as to reduce the requirements for the attachment accuracy of the protective film in the anti-glare hollow area, thereby avoiding deviations in the position of the anti-glare hollow area to a certain extent.

[0004] To achieve the above objectives, in a first aspect, an embodiment of the present application provides a method for producing a protective substrate, comprising:

[0005] A protective film with hollow holes is attached to the surface of the transparent substrate to obtain a first substrate; the area within the hollow holes corresponds to the anti-glare hollow area of ​​the transparent substrate;

[0006] The first substrate having the protective film is treated with a first liquid to obtain a second substrate; the first liquid is configured to adhere to the transparent substrate and stay away from the anti-glare liquid or the anti-glare film;

[0007] removing the protective film of the second substrate to obtain a third substrate;

[0008] The side of the third substrate from which the protective film is torn off is treated with an anti-glare coating.

[0009] In a possible implementation of the first aspect, the first substrate having the protective film is treated with a first liquid to obtain a second substrate; comprising:

[0010] The first substrate having the protective film is treated with a first liquid on one side thereof and a first film layer is formed on the entire surface of the transparent substrate in the anti-glare hollow region to obtain a second substrate; the first film layer is configured such that: the side facing the transparent substrate is attached to the transparent substrate, and the side facing away from the transparent substrate is away from the anti-glare liquid or the anti-glare film;

[0011] The first film layer is a liquid film layer or a solid film layer.

[0012] In a possible implementation of the first aspect, a protective film having hollow holes is attached to the surface of the transparent substrate to obtain a first substrate; comprising:

[0013] The surface of the transparent substrate is covered with a protective film having hollow holes so that the inner edges of the hollow holes of the protective film correspond to the boundaries of the anti-glare hollow areas on the transparent substrate, thereby obtaining a first substrate.

[0014] In a possible implementation of the first aspect, a protective film having hollow holes is attached to the surface of the transparent substrate to obtain a first substrate; comprising:

[0015] The surface of the transparent substrate is completely covered with a protective film having hollow holes, so that the inner edges of the hollow holes of the protective film coincide with the boundaries of the anti-glare hollow areas on the transparent substrate, thereby obtaining a first substrate.

[0016] In a possible implementation manner of the first aspect, the surface energy of the first liquid is smaller than the surface energy of the anti-glare film.

[0017] In a possible implementation manner of the first aspect, the method includes at least one of the following:

[0018] a. The transparent substrate is a glass substrate or a plastic substrate;

[0019] b. The components of the first liquid include one or more of fluoride, siloxane, organosilicon compound and metal oxide nanomaterial;

[0020] c. The water drop contact angle of the first film layer in the hollow hole is ≥50°.

[0021] In a second aspect, the present application provides a method for producing a protective glass, comprising:

[0022] providing a glass substrate;

[0023] Covering the entire surface of the glass substrate with a protective film so that the inner edge of the hollow hole of the protective film coincides with the boundary of the anti-glare hollow area of ​​the glass substrate to obtain a first protective substrate;

[0024] Treating the first protective substrate with the hollow hole on one side thereof with an anti-fingerprint liquid so that an anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area in the hollow hole to obtain an anti-fingerprint first protective substrate;

[0025] The protective film of the anti-fingerprint first protective substrate is removed to obtain an anti-fingerprint substrate; the anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area in the hollow hole of the anti-fingerprint substrate;

[0026] The anti-glare coating treatment is performed on all the sides of the anti-fingerprint substrate having the anti-fingerprint layer to obtain a protective glass having an anti-glare hollow area.

[0027] In a possible implementation of the second aspect, a side of the first protective substrate having the hollow hole is treated with an anti-fingerprint liquid so that an anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area to obtain an anti-fingerprint first protective substrate; comprising:

[0028] The first protective substrate is treated by spraying anti-fingerprint liquid on one side having the hollow holes, so that an anti-fingerprint liquid film layer is formed on the surface of the glass substrate in the anti-glare hollow area to obtain an anti-fingerprint first protective substrate.

[0029] In a possible implementation of the second aspect, a side of the first protective substrate having the hollow hole is treated with an anti-fingerprint liquid so that an anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area to obtain an anti-fingerprint first protective substrate; comprising:

[0030] The first protective substrate having the hollow hole is subjected to anti-fingerprint coating treatment by using an anti-fingerprint liquid to form an anti-fingerprint solid film layer on the surface of the glass substrate in the anti-glare hollow area, thereby obtaining an anti-fingerprint first protective substrate;

[0031] The protective film of the anti-fingerprint first protective substrate is removed to obtain an anti-fingerprint substrate; the anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area in the hollow hole of the anti-fingerprint substrate; comprising:

[0032] The protective film of the anti-fingerprint first protective substrate is removed to obtain an anti-fingerprint substrate; the entire surface of the glass substrate corresponding to the hollow holes of the anti-fingerprint substrate is formed with an anti-fingerprint solid film layer;

[0033] The anti-glare coating treatment is performed on all sides of the anti-fingerprint substrate having the anti-fingerprint layer to obtain a protective glass having an anti-glare hollow area, comprising:

[0034] The anti-glare coating treatment is performed on all sides of the anti-fingerprint substrate having the anti-fingerprint solid film layer, and the anti-fingerprint solid film layer is torn off to obtain a protective glass having an anti-glare hollow area.

[0035] In a possible implementation manner of the second aspect, providing a glass substrate includes:

[0036] The glass substrate is obtained by cutting a large-sized glass substrate into small-sized glass substrates and processing edges of the small-sized glass substrates to remove microcracks.

[0037] In a possible implementation manner of the second aspect, a water drop contact angle of the anti-fingerprint layer in the hollow hole is ≥50°.

[0038] In a third aspect, an embodiment of the present application provides a camera module, which includes a protective substrate obtained according to the above method or a protective glass obtained according to the above method.

[0039] In a fourth aspect, an embodiment of the present application provides an electronic device, characterized in that it includes the above-mentioned camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0041] Figure 1 Schematic diagram of the process of preparing protective glass in the related art, wherein: Figure 1 a in FIG. 1 is a schematic diagram of the structure of the first glass substrate and the first protective film. Figure 1 b is a schematic diagram of the structure after the first protective film is attached to the first glass substrate and then subjected to anti-glare coating treatment; Figure 1 The c in the code is to remove Figure 1 Schematic diagram of the protective glass obtained after the first protective film with an anti-glare layer is attached in b.

[0042] Figure 2 This is a schematic diagram of the principle of an embodiment of the present application, wherein: Figure 2 a in the figure is a schematic diagram of the process of spraying the anti-glare liquid after the anti-fingerprint layer is attached to the second glass substrate; Figure 2 b in Figure 2 Schematic diagram of the structure after a is sprayed with anti-glare liquid.

[0043] Figure 3 This is a schematic flow chart of a protective substrate production method according to an embodiment of a technical solution of the present application.

[0044] Figure 4 This is a schematic flow chart of a protective glass production method according to another embodiment of the technical solution of the present application.

[0045] Figure 5 This is a schematic diagram of a protective glass production method in another embodiment of the present invention, wherein: Figure 5 a in which is the third glass substrate, Figure 5b is a schematic diagram of a structure in which a third protective film with a hollow hole of the same size and shape as the anti-glare hollow area on the glass substrate is covered on the third glass substrate. Figure 5 The c in Figure 5 A schematic diagram of the structure of the third protective film in b after the surface is treated with anti-fingerprint liquid; Figure 5 The d in the Figure 5 The schematic diagram of the structure of c after the third protective film is removed, Figure 5 The e in Figure 5 The structure of d in the figure is shown in the figure after being treated with anti-glare liquid. Figure 5 The f in the equation is Figure 5 Schematic diagram of the structure of the protective glass obtained after treatment e.

[0046] Figure 6 This is a schematic flow chart of a method for producing protective glass according to another embodiment of the present application.

[0047] Among them, the reference numerals in the figure are:

[0048] 10-first glass substrate, 20-first protective film, 30-anti-glare substrate, 40-second protective film, 1-transparent substrate, 2-first film layer, 3-anti-glare liquid, 4-third protective film, 5-hollow hole, 6-anti-fingerprint layer, 7-fourth protective film, 8-anti-glare layer, 9-anti-glare hollow area, 100-third glass substrate. DETAILED DESCRIPTION

[0049] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0050] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0051] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] When preparing protective glass, the related technology generally adopts Figure 1 The process shown.

[0054] See also Figure 1 As shown, Figure 1 The first protective film 20 in a is attached to the designated area of ​​the first glass substrate 10. The first protective film 20 is the same size and shape as the anti-glare hollow area. Since the size of the first protective film 20 is small, a slight deviation will cause the first protective film to deviate from the anti-glare hollow area. Therefore, when the first protective film is attached to the designated area of ​​the first glass substrate 10, high precision is required. After the attachment is completed, the entire surface with the first protective film 20 is subjected to anti-glare treatment, such as Figure 1 As shown in b, at this time, the first glass substrate 10 is attached with an anti-glare liquid layer or an anti-glare solid film layer to obtain an anti-glare substrate 30, and the upper layer of the first protective film 20 is attached with an anti-glare liquid layer or an anti-glare solid film layer to obtain a second protective film 40. Figure 1 After the first protective film 20 on the surface of the structure shown in b is removed, the Figure 1 The protective glass is shown in c.

[0055] As can be seen from the above, in the related art, whether the hollow area is accurate enough is limited by the attachment accuracy of the first protective film 20. For millimeter-level operations, there is often a large deviation when attaching the first protective film 20, resulting in a deviation in the position of the hollow area.

[0056] In the related art, the position deviation of the hollow area when attaching the first protective film 20 is caused because the hollow area is too small, which causes the size of the first protective film to be too small. When the size of the first protective film is too small, it is inevitable that deviation will occur when attaching the first protective film 20.

[0057] In addition, similar problems also exist in other transparent substrates such as some transparent plastics, glass and other materials.

[0058] In order to solve the above problems, the present invention provides a method for producing a protective substrate, comprising:

[0059] S1: attaching a protective film with hollow holes to the surface of the transparent substrate to obtain a first substrate; the area in the hollow holes corresponds to the anti-glare hollow area of ​​the transparent substrate;

[0060] S2: treating the side of the first substrate having the protective film with a first liquid to obtain a second substrate; the first liquid is configured to adhere to the transparent substrate and be away from the anti-glare liquid or the anti-glare film;

[0061] S3 tearing off the protective film of the second substrate to obtain a third substrate;

[0062] S4: applying an anti-glare coating to the side of the third substrate from which the protective film is torn off.

[0063] In some embodiments, the first substrate having the protective film is treated with a first liquid to obtain a second substrate; comprising:

[0064] The first substrate having the protective film is treated with a first liquid on one side thereof and a first film layer is formed on the entire surface of the transparent substrate in the anti-glare hollow region to obtain a second substrate; the first film layer is configured such that: the side facing the transparent substrate is attached to the transparent substrate, and the side facing away from the transparent substrate is away from the anti-glare liquid or the anti-glare film;

[0065] The first film layer is a liquid film layer or a solid film layer.

[0066] In some embodiments, a protective film having hollow holes is attached to the surface of the transparent substrate to obtain a first substrate; comprising:

[0067] The surface of the transparent substrate is covered with a protective film having hollow holes so that the inner edges of the hollow holes of the protective film correspond to the boundaries of the anti-glare hollow areas on the transparent substrate, thereby obtaining a first substrate.

[0068] In a possible implementation of the first aspect, a protective film having hollow holes is attached to the surface of the transparent substrate to obtain a first substrate; comprising:

[0069] The surface of the transparent substrate is completely covered with a protective film having hollow holes, so that the inner edges of the hollow holes of the protective film coincide with the boundaries of the anti-glare hollow areas on the transparent substrate, thereby obtaining a first substrate.

[0070] In some embodiments, the surface energy of the first liquid is close to that of the transparent substrate, and the surface energy of the first liquid is smaller than that of the anti-glare film.

[0071] In some embodiments, the method comprises at least one of the following:

[0072] a. The transparent substrate is a glass substrate or a plastic substrate;

[0073] b. The components of the first liquid include one or more of fluoride, siloxane, organosilicon compound and metal oxide nanomaterial;

[0074] c. The water drop contact angle of the first film layer in the hollow hole is ≥50°.

[0075] In order to solve the above problems, in a technical solution of the present application, a method for producing a protective substrate is provided. Figure 4 As shown, the method includes:

[0076] S101. Providing a transparent substrate;

[0077] In some embodiments, the transparent substrate may be a glass substrate or a plastic substrate, and the plastic substrate may be a PET (polyethylene terephthalate) substrate, etc. This is only an example and is not intended to be limiting.

[0078] S102. Covering the entire surface of the transparent substrate with a protective film so that the inner edge of the hollow hole of the protective film coincides with the boundary of the anti-glare hollow area on the transparent substrate to obtain a first protective substrate;

[0079] In some embodiments, the protective film may be a high temperature resistant process protective film or a peelable adhesive, which is only used as an example and not as a limitation.

[0080] In some embodiments, in this step, the hollow holes of the protective film can be of the same size and shape as the anti-glare hollow area on the transparent substrate. By pre-opening the hollow holes of the same size and shape as the anti-glare on the protective film, it is helpful that when the protective film is covered on the transparent substrate, the inner edge of the hollow hole can accurately correspond to the periphery of the anti-glare hollow area, that is, the inner edge of the hollow hole of the protective film coincides with the boundary of the anti-glare hollow area of ​​the transparent substrate, so that the surface of the transparent substrate corresponding to the range of the hollow hole is the anti-glare hollow area.

[0081] S103. The first protective substrate is treated with a first liquid on one side having the hollow holes, so that a first film layer is formed on the entire surface of the anti-glare hollow area, thereby obtaining a first film protective substrate; the first film layer is configured as follows: the side facing the transparent substrate is attached to the transparent substrate, and the side facing away from the transparent substrate is away from the anti-glare liquid or anti-glare film.

[0082] It should be understood that the first film layer can be a liquid film layer or a solid film layer.

[0083] The purpose of using the first liquid treatment is to form protection against the glare hollow area, and to prevent the anti-glare liquid or anti-glare film from adhering to the glare hollow area during the anti-glare treatment. When the first film layer covers the surface of the transparent substrate corresponding to the glare hollow area, the anti-glare liquid or anti-glare film produced by the anti-glare operation will adhere to the first film layer. Due to the alienation effect of the first film layer on the anti-glare liquid or anti-glare film, the anti-glare film cannot adhere to or the anti-glare liquid rarely adheres to the first film layer (subsequently removed by volatilization or wiping), thereby preventing the anti-glare liquid or anti-glare film from adhering to the glare hollow area.

[0084] In some embodiments, the material of the first film layer has a surface energy close to that of the transparent substrate and a surface energy less than that of the anti-glare film layer. The meaning of close is limited to enabling the first film layer to adhere to the glass substrate. The first film layer is made of a material with a surface energy close to that of the transparent substrate, which is conducive to the first film layer adhering to the transparent substrate; the first film layer is made of a material with a surface energy less than that of the anti-glare film layer, which is conducive to the anti-glare material not being able to adhere or very little adhering to the surface of the first film layer when anti-glare treatment is performed.

[0085] It should be understood that the first film layer is made by film-forming treatment of the first liquid, and the composition of the first liquid and the composition of the first film layer can be the same. Exemplarily, the composition of the first liquid includes one or more of fluoride, siloxane, organosilicon compound and metal oxide nanomaterial. The first liquid is an anti-fingerprint liquid. The first film layer is an anti-fingerprint layer. These materials are generally used as materials for making anti-fingerprint films, and therefore, the anti-fingerprint liquid can also be used as the material of the first liquid.

[0086] In some embodiments, the water drop contact angle of the first film layer in the hollow hole is ≥50°. When the water drop contact angle is ≥50°, the first film layer has a good separation effect on the anti-glare material.

[0087] S104. The protective film of the first film protective substrate is removed to obtain a first film substrate; the first film layer is formed on the entire surface of the transparent substrate in the hollow hole of the first film substrate corresponding to the anti-glare hollow area;

[0088] In this step, after the protective film is removed, only the first film layer exists on the surface of the anti-glare hollowed-out area of ​​the transparent substrate of the first film substrate, and the first film layer on the protective film of the first film protective substrate is removed from the transparent substrate as the protective film is removed.

[0089] S105. Performing anti-glare coating treatment on the entire surface of the first film substrate having the first film layer to obtain a protective substrate having an anti-glare hollow area.

[0090] In this step, since the first film layer has a alienating effect on the anti-glare material, the anti-glare material cannot adhere to or very little adheres to the surface of the first film layer when the anti-glare coating is performed, and the transparent substrate range covered by the first film layer becomes an area where the anti-glare material does not exist, that is, the anti-glare hollow area. As a result, only the surface of the first film layer is not covered with the anti-glare material, thereby obtaining a protective substrate with an anti-glare hollow area.

[0091] After the anti-glare coating treatment, all areas outside the anti-glare hollow area on the surface of the transparent substrate are covered with the anti-glare film, while the anti-glare hollow area is only covered with the first film layer, which can be removed or retained, and then a protective substrate with an anti-glare hollow area is obtained.

[0092] The working principle of the first film layer can be found in Figure 2 In the steps S103-S105, the first film layer made of the first liquid in step S103 needs to be able to adhere to the transparent substrate and have alienation properties to the anti-glare liquid or anti-glare film. Figure 2 As shown in a in FIG. 1 , when the first film layer 2 is formed in the anti-glare hollow region on the transparent substrate 1, due to the adhesion of the first film layer 2, the left side of the first film layer 2 can be attached to the transparent substrate; the right side surface of the first film layer 2 has alienation to the anti-glare liquid or the anti-glare film; see Figure 2 As shown in b, when the anti-glare liquid is sprayed on the right surface of the transparent substrate, the anti-glare liquid 3 will not be attached or will be rarely attached to the right surface of the first film layer 2. After the very little anti-glare liquid attached evaporates, only the first film layer will exist in the anti-glare hollow area, and no anti-glare layer will exist; and the anti-glare layer will be formed on the transparent substrate outside the anti-glare hollow area, and the first film layer on the anti-glare hollow area can be removed or retained, so as to obtain a protective substrate with an anti-glare hollow area.

[0093] The technical solution of the embodiment of the present application avoids the use of a protective film of the same size and shape as the anti-glare hollow area to protect the anti-glare hollow area in the related art, and utilizes the adhesion of the first film to the transparent substrate and the alienation from the anti-glare material, so that after the anti-glare treatment, the anti-glare hollow area at the attachment point of the first film will not be attached by the anti-glare material, thereby reducing the attachment accuracy requirements of the anti-glare hollow area to the protective film, and largely avoiding the situation where the position of the anti-glare hollow area deviates.

[0094] Specifically, in order to solve the above problems, in another technical solution of the present application, taking the first liquid as an anti-fingerprint liquid and the first film layer as an anti-fingerprint film layer as an example, a production method of a protective glass is provided, referring to Figure 5 As shown, the method includes:

[0095] S201. Providing a glass substrate;

[0096] S202. Covering the entire surface of the glass substrate with a protective film so that the inner edge of the hollow hole of the protective film coincides with the boundary of the anti-glare hollow area of ​​the glass substrate to obtain a first protective substrate;

[0097] S203. Treating the first protective substrate with the hollow hole on one side thereof with an anti-fingerprint liquid so that the entire surface of the anti-glare hollow area in the hollow hole is formed with an anti-fingerprint layer to obtain an anti-fingerprint first protective substrate;

[0098] In some embodiments, the water drop contact angle of the anti-fingerprint layer in the hollow hole is ≥50°.

[0099] In some embodiments, in order to facilitate accurate attachment, the protective film can be of the same size and shape as the glass substrate, which is only an example and not a limitation.

[0100] In some embodiments, the anti-fingerprint liquid treatment may be anti-fingerprint liquid spraying, vacuum evaporation or vacuum sputtering; the anti-glare coating may be anti-glare liquid spraying, vacuum evaporation or vacuum sputtering, which is only an example and not a limitation.

[0101] S204. The protective film of the first anti-fingerprint protective substrate is removed to obtain an anti-fingerprint substrate; an anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area in the hollow hole of the anti-fingerprint substrate;

[0102] S205. Performing anti-glare coating treatment on all sides of the anti-fingerprint substrate having the anti-fingerprint layer to obtain a protective glass having an anti-glare hollow area.

[0103] In some embodiments, this step may be performed in the following manner: spraying anti-glare liquid on the entire surface of the anti-fingerprint substrate having the anti-fingerprint layer, and obtaining a protective glass having an anti-glare hollow area after screen printing and drying.

[0104] For the process of the protective glass production method of this embodiment, please refer to Figure 5 shown. Figure 5 In a of the figure, a third glass substrate 100 is provided, and a third protective film 4 having a hollow hole 5 is attached to the third glass substrate 100. The third protective film is equal in size and shape to the glass substrate, and the inner edge of the hollow hole coincides with the boundary of the anti-glare hollow area. The structure after attachment is shown in FIG. Figure 5 As shown in b. Figure 5 Based on the above, Figure 5The upper surface of the structure shown in b is treated with anti-fingerprint liquid. For example, the anti-fingerprint liquid spraying treatment or anti-fingerprint liquid coating treatment can be used, so as to form an anti-fingerprint liquid film or an anti-fingerprint solid film layer in the anti-glare hollow area in the hollow hole. Figure 5 As shown in c, at this time, the surface of the third protective film is covered with a layer of anti-fingerprint liquid film or anti-fingerprint solid film, that is, the fourth protective film 7; the area of ​​the glass substrate in the hollow hole, that is, the anti-glare hollow area, is attached with a layer of anti-fingerprint liquid film or anti-fingerprint solid film, that is, the anti-fingerprint layer 6. Figure 5 As shown in d, Figure 5 On the basis of step c in the above, further, the third protective film 4 with the hollow hole 5 on the glass substrate is torn off, and at this time, only the anti-fingerprint layer 6 exists on the glass substrate. Figure 5 As shown in e, Figure 5 After the surface of d in the figure is subjected to anti-glare coating treatment, an anti-glare layer 8 is formed on the surface of the glass substrate. At this time, since the anti-glare hollow area is covered by the anti-fingerprint layer, the anti-glare layer cannot be attached or only a very small amount of anti-glare liquid is attached to the anti-fingerprint layer. After the anti-glare liquid evaporates or is wiped off or the anti-glare layer that cannot be attached is removed, a protective glass with an anti-glare hollow area 9 is obtained. The anti-fingerprint layer 6 on the protective glass can be retained or removed, which is not limited here.

[0105] The protective glass of this embodiment uses the lotus leaf principle. The anti-fingerprint layer is equivalent to coating a layer of nano-chemical material on the outer surface of the glass substrate, which can reduce the surface tension of the glass to a minimum. The camera module using this protective glass can reduce the contact area between dust and the protective glass surface by 90%, making it have strong hydrophobic, anti-oil and anti-fingerprint capabilities.

[0106] After the anti-fingerprint agent is attached to the protective glass, the surface tension of the protective glass surface drops to the lowest (the contact angle of the water droplet increases). When the anti-glare liquid is sprayed, the adhesion of the anti-glare liquid in the sprayed area of ​​the anti-fingerprint liquid becomes poor, resulting in the anti-glare liquid being unable to adhere, forming an anti-glare hollow area.

[0107] Specifically, in another technical solution of the present application, a method for producing a protective glass is provided. Figure 6 As shown, the method includes:

[0108] S2011. Cutting a large-sized glass substrate into small-sized glass substrates, and strengthening the edges of the small-sized glass substrates to remove microcracks, thereby obtaining the glass substrates.

[0109] In this step, the edge of the small-sized glass substrate is strengthened to avoid problems caused by cracking or damage of the glass substrate in subsequent processes.

[0110] S202. Covering the entire surface of the glass substrate with a protective film so that the inner edge of the hollow hole of the protective film coincides with the boundary of the anti-glare hollow area of ​​the glass substrate to obtain a first protective substrate;

[0111] S203a. The first protective substrate having the hollow hole is sprayed with an anti-fingerprint liquid to form an anti-fingerprint liquid film layer on the surface of the glass substrate in the anti-glare hollow area to obtain an anti-fingerprint first protective substrate;

[0112] S203a adopts an anti-fingerprint liquid spraying operation to form an anti-fingerprint liquid film layer on the surface of the glass substrate in the anti-glare hollow area. On the one hand, this method facilitates the subsequent removal of the anti-fingerprint liquid by volatilization or wiping. On the other hand, when the anti-glare liquid contacts the anti-fingerprint liquid in the anti-glare hollow area, it can prevent the anti-glare liquid from adhering to the anti-glare hollow area.

[0113] S204. The protective film of the first anti-fingerprint protective substrate is removed to obtain an anti-fingerprint substrate; an anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area in the hollow hole of the anti-fingerprint substrate;

[0114] S205. Performing anti-glare coating treatment on all sides of the anti-fingerprint substrate having the anti-fingerprint layer to obtain a protective glass having an anti-glare hollow area.

[0115] or the method comprises:

[0116] S2011. Cutting a large-sized glass substrate into small-sized glass substrates, and strengthening the edges of the small-sized glass substrates to remove microcracks, thereby obtaining the glass substrates;

[0117] S202. Covering the entire surface of the glass substrate with a protective film so that the inner edge of the hollow hole of the protective film coincides with the boundary of the anti-glare hollow area of ​​the glass substrate to obtain a first protective substrate;

[0118] S203b. The first protective substrate having the hollow hole is subjected to anti-fingerprint coating treatment to form an anti-fingerprint solid film layer on the surface of the glass substrate in the anti-glare hollow area to obtain an anti-fingerprint first protective substrate.

[0119] S203b adopts an anti-fingerprint liquid coating operation, which forms an anti-fingerprint solid film layer on the surface of the glass substrate in the anti-glare hollow area. On the one hand, this method is conducive to the final protective glass having an anti-fingerprint film in the anti-glare hollow area; on the other hand, since the anti-fingerprint solid film layer is denser than the liquid film, the use of the anti-fingerprint solid film layer can better prevent the anti-glare liquid from adhering to the surface of the transparent substrate in the anti-glare hollow area.

[0120] S2041. The protective film of the anti-fingerprint first protective substrate is removed to obtain an anti-fingerprint substrate, wherein the entire surface of the glass substrate corresponding to the hollow holes of the anti-fingerprint substrate forms an anti-fingerprint solid film layer.

[0121] S2051. Perform anti-glare coating treatment on all sides of the anti-fingerprint substrate having the anti-fingerprint solid film layer, remove the anti-fingerprint solid film layer, and obtain a protective glass having an anti-glare hollow area.

[0122] The functions and effects of the technical features in this technical solution that are similar or related to the aforementioned technical solution are similar to those of the aforementioned technical solution. The inventive concept and beneficial effects of this technical solution are similar to those of the aforementioned technical solution, and are not elaborated here.

[0123] The protective substrate or protective glass prepared by the above-mentioned technical solutions is applied to the field of camera modules. Another embodiment of the present application provides a camera module, which includes the protective substrate or protective glass obtained by the above-mentioned method.

[0124] The camera module using the above-mentioned protective substrate or protective glass has a protective glass that can protect its lens from fingerprint contamination and can avoid the problem of reduced shooting quality of the camera module caused by anti-glare materials.

[0125] The above-mentioned technical solutions for protecting the substrate and the protective glass can be applied in the production of protective glass, and can also be applied in the production of camera modules, capacitive touch screens such as integrated capacitive touch screens, metal mesh integrated capacitive touch screens and other devices using the above-mentioned protective glass. The beneficial effects that can be achieved by the camera module, capacitive touch screens such as integrated capacitive touch screens, and metal mesh integrated capacitive touch screens of this embodiment can be referred to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0126] The above-mentioned camera module is applied to the field of electronic equipment, such as tablets, mobile phones, computers and other electronic equipment. An embodiment of the present application provides an electronic equipment, including the above-mentioned camera module.

[0127] The electronic device using this camera module has an anti-glare hollow area with a relatively accurate position without affecting the imaging quality of the lens, which to a certain extent avoids the problem of poor lens imaging quality caused by deviation in the position of the anti-glare hollow area.

[0128] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for producing a protective substrate, characterized in that: include: A protective film with hollow holes is attached to the surface of a transparent substrate to obtain a first substrate; The area within the hollow hole corresponds to the anti-glare hollow area of ​​the transparent substrate; The first substrate having the protective film is treated with a first liquid to obtain a second substrate; the first liquid is configured to adhere to the transparent substrate and stay away from the anti-glare liquid or the anti-glare film; removing the protective film of the second substrate to obtain a third substrate; The side of the third substrate from which the protective film is torn off is treated with an anti-glare coating.

2. The method for producing a protective substrate according to claim 1, characterized in that: The first substrate having the protective film is treated with a first liquid to obtain a second substrate; comprising: The first substrate having the protective film is treated with a first liquid on one side thereof and a first film layer is formed on the entire surface of the transparent substrate in the anti-glare hollow region to obtain a second substrate; the first film layer is configured such that: the side facing the transparent substrate is attached to the transparent substrate, and the side facing away from the transparent substrate is away from the anti-glare liquid or the anti-glare film; The first film layer is a liquid film layer or a solid film layer.

3. The method for producing a protective substrate according to claim 1 or 2, characterized in that: A protective film with hollow holes is attached to the surface of the transparent substrate to obtain a first substrate; comprising: The surface of the transparent substrate is covered with a protective film having hollow holes so that the inner edges of the hollow holes of the protective film correspond to the boundaries of the anti-glare hollow areas on the transparent substrate, thereby obtaining a first substrate.

4. The method for producing a protective substrate according to claim 3, characterized in that: A protective film with hollow holes is attached to the surface of the transparent substrate to obtain a first substrate; comprising: The surface of the transparent substrate is completely covered with a protective film having hollow holes, so that the inner edges of the hollow holes of the protective film coincide with the boundaries of the anti-glare hollow areas on the transparent substrate, thereby obtaining a first substrate.

5. The method for producing a protective substrate according to claim 1 or 2, characterized in that: The surface energy of the first liquid is smaller than the surface energy of the anti-glare film.

6. The method for producing a protective substrate according to claim 5, characterized in that: The method comprises at least one of the following: a. The transparent substrate is a glass substrate or a plastic substrate; b. The components of the first liquid include one or more of fluoride, siloxane, organosilicon compound and metal oxide nanomaterial; c. The water drop contact angle of the first film layer in the hollow hole is ≥50°.

7. A method for producing protective glass, characterized in that: include: providing a glass substrate; Covering the entire surface of the glass substrate with a protective film so that the inner edge of the hollow hole of the protective film coincides with the boundary of the anti-glare hollow area of ​​the glass substrate to obtain a first protective substrate; Treating the first protective substrate with the hollow hole on one side thereof with an anti-fingerprint liquid so that an anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area in the hollow hole to obtain an anti-fingerprint first protective substrate; The protective film of the anti-fingerprint first protective substrate is removed to obtain an anti-fingerprint substrate; the anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area in the hollow hole of the anti-fingerprint substrate; The anti-glare coating treatment is performed on all the sides of the anti-fingerprint substrate having the anti-fingerprint layer to obtain a protective glass having an anti-glare hollow area.

8. The method for producing a protective glass according to claim 7, characterized in that: The first protective substrate having the hollow hole is treated with an anti-fingerprint liquid so that the entire surface of the anti-glare hollow area is formed with an anti-fingerprint layer to obtain an anti-fingerprint first protective substrate; comprising: The first protective substrate is treated by spraying anti-fingerprint liquid on one side having the hollow holes, so that an anti-fingerprint liquid film layer is formed on the surface of the glass substrate in the anti-glare hollow area to obtain an anti-fingerprint first protective substrate.

9. The method for producing a protective glass according to claim 7, characterized in that: The first protective substrate having the hollow hole is treated with an anti-fingerprint liquid so that the entire surface of the anti-glare hollow area is formed with an anti-fingerprint layer to obtain an anti-fingerprint first protective substrate; comprising: The first protective substrate having the hollow hole is subjected to anti-fingerprint coating treatment by using an anti-fingerprint liquid to form an anti-fingerprint solid film layer on the surface of the glass substrate in the anti-glare hollow area, thereby obtaining an anti-fingerprint first protective substrate; The protective film of the anti-fingerprint first protective substrate is removed to obtain an anti-fingerprint substrate; the anti-fingerprint layer is formed on the entire surface of the anti-glare hollow area in the hollow hole of the anti-fingerprint substrate; comprising: The protective film of the anti-fingerprint first protective substrate is removed to obtain an anti-fingerprint substrate; the entire surface of the glass substrate corresponding to the hollow holes of the anti-fingerprint substrate is formed with an anti-fingerprint solid film layer; The anti-glare coating treatment is performed on all sides of the anti-fingerprint substrate having the anti-fingerprint layer to obtain a protective glass having an anti-glare hollow area, comprising: The anti-glare coating treatment is performed on all sides of the anti-fingerprint substrate having the anti-fingerprint solid film layer, and the anti-fingerprint solid film layer is torn off to obtain a protective glass having an anti-glare hollow area.

10. The method for producing a protective glass according to any one of claims 7 to 9, characterized in that: Glass substrates include: The glass substrate is obtained by cutting a large-sized glass substrate into small-sized glass substrates and processing edges of the small-sized glass substrates to remove microcracks.

11. The method for producing a protective glass according to claim 10, characterized in that: The water drop contact angle of the anti-fingerprint layer in the hollow hole is ≥50°.

12. A camera module, characterized in that: The camera module includes a protective substrate obtained according to the method of any one of claims 1-6 or a protective glass obtained according to the method of any one of claims 7-11.

13. An electronic device, characterized in that: Including the camera module described in claim 12.

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