阅读说明：本技术 一种电磁屏蔽盖板的制备方法 (Preparation method of electromagnetic shielding cover plate ) 是由 土克旭 唐红军 李跃 陈芳胜 项争 林霄 刘风雷 于 2020-11-25 设计创作，主要内容包括：本发明公开了一种电磁屏蔽盖板的制备方法,涉及电磁屏蔽技术领域。方法包括：在盖板的表面涂布胶合胶水；在盖板上涂布胶合胶水的一侧平铺设置电磁屏蔽膜；去除电磁屏蔽膜与盖板的接触面的气泡；在电磁屏蔽膜的另一侧表面涂布胶合胶水；在电磁屏蔽膜上设置保护板并去除保护板与电磁屏蔽膜的接触面的气泡；紫外光照射以固化胶合胶水,得到电磁屏蔽盖板。上述方法将电磁屏蔽盖分为盖板、电磁屏蔽膜和保护板三部分,三个零件可以独立加工,工序并行,在制备完成后通过胶合胶水将三部分粘接在一起,得到的电磁屏蔽盖板的良品率更高,且制备过程中只需采用胶合胶水并使用紫外线照射,使得电磁屏蔽盖板的制备成本更低,效率更高。(The invention discloses a preparation method of an electromagnetic shielding cover plate, and relates to the technical field of electromagnetic shielding. The method comprises the following steps: coating gluing glue on the surface of the cover plate; one side of the cover plate coated with the gluing glue is laid with an electromagnetic shielding film; removing bubbles on the contact surface of the electromagnetic shielding film and the cover plate; coating the other side surface of the electromagnetic shielding film with gluing glue; arranging a protection plate on the electromagnetic shielding film and removing bubbles on the contact surface of the protection plate and the electromagnetic shielding film; and irradiating ultraviolet light to cure the gluing glue to obtain the electromagnetic shielding cover plate. According to the method, the electromagnetic shielding cover is divided into the cover plate, the electromagnetic shielding film and the protective plate, the three parts can be independently processed and are parallel in process, the three parts are bonded together through the gluing glue after the preparation is completed, the yield of the obtained electromagnetic shielding cover plate is higher, and the gluing glue is only needed to be adopted and ultraviolet rays are used for irradiating in the preparation process, so that the preparation cost of the electromagnetic shielding cover plate is lower, and the efficiency is higher.)

1. A method for preparing an electromagnetic shielding cover plate, the method comprising:

coating gluing glue on the surface of the cover plate;

one side of the cover plate coated with the gluing glue is tiled with an electromagnetic shielding film;

removing bubbles on the contact surface of the electromagnetic shielding film and the cover plate;

coating the gluing glue on the surface of the other side of the electromagnetic shielding film;

arranging a protection plate on the electromagnetic shielding film and removing bubbles on a contact surface of the protection plate and the electromagnetic shielding film;

and irradiating ultraviolet light to solidify the gluing glue to obtain the electromagnetic shielding cover plate.

2. The method of claim 1, wherein prior to the ultraviolet light irradiating to cure the glue, the method further comprises:

and removing residual bubbles on the contact surface of the electromagnetic shielding film and the cover plate and on the contact surface of the protective plate and the electromagnetic shielding film by adopting a bubble removing device.

3. The method of claim 1, wherein prior to applying the glue to the surface of the cover sheet, the method further comprises:

and printing a preset pattern on the cover plate in a screen printing mode, wherein the preset area of the preset pattern is light-transmitting.

4. The method of claim 1, wherein prior to applying the glue to the surface of the cover sheet, the method further comprises:

forming a design pattern on the substrate by adopting a photoetching process;

growing a metal layer in the design pattern by adopting a selective electrodeposition process to form a metal pattern corresponding to the design pattern;

and transferring the metal pattern onto a thin film by adopting an imprinting process to form the electromagnetic shielding film.

5. The method of claim 4, wherein the transferring the metal pattern onto a thin film using an imprinting process to form the electromagnetic shielding film comprises:

coating a light curing adhesive on the substrate on which the metal layer is formed, and covering the film on the light curing adhesive;

irradiating by an ultraviolet lamp to cure the light-cured adhesive;

and peeling the thin film formed with the metal pattern to form the electromagnetic shielding film.

6. The method of claim 1, wherein the electromagnetic shielding film is in the form of a regular hexagonal mesh.

7. The method of claim 1, wherein prior to applying the glue to the surface of the cover sheet, the method further comprises:

an anti-reflection film layer and a high-transmittance anti-fingerprint film layer are laid on the protective plate.

8. The method of claim 1, wherein the cover plate is a glass cover plate and the protective plate is a glass protective plate.

9. The method of claim 1, wherein prior to applying the glue to the surface of the cover sheet, the method further comprises:

and paving a black conductive metal film layer on the electromagnetic shielding film.

10. A method for preparing an electromagnetic shielding cover plate, the method comprising:

and generating an electromagnetic shielding film on the glass cover plate by adopting a metal stripping process, wherein the electromagnetic shielding film is fixedly connected with the glass cover plate.

Technical Field

The invention relates to the technical field of electromagnetic shielding, in particular to a preparation method of an electromagnetic shielding cover plate.

Background

At present, the mode of realizing the imaging on the lens cover is mainly silk-screen printing or transfer printing, and the silk-screen printing or the transfer printing can realize the low-precision imaging and is suitable for the imaging with low requirement on the width of a line. However, the required partial area on the lens cover realizes the signal shielding function, lines cannot be seen by naked eyes, the line width is less than 10 μm, and the pattern obtained by silk-screen printing or pad printing cannot meet the requirement.

In the prior art, the preparation of the film with the electromagnetic shielding function can be realized by combining a metal stripping process and a vacuum evaporation process, but all processes need to be finished on a single part, so that the processes are various, the preparation cost is high, and the efficiency is low.

Disclosure of Invention

The invention aims to provide a preparation method of an electromagnetic shielding cover plate, and aims to solve the technical problems of high preparation cost and low efficiency of the electromagnetic shielding cover plate in the prior art.

The embodiment of the invention is realized by the following steps:

in one aspect of the embodiments of the present invention, a method for manufacturing an electromagnetic shielding cover plate is provided, where the method includes: coating gluing glue on the surface of the cover plate; one side of the cover plate coated with the gluing glue is laid with an electromagnetic shielding film; removing bubbles on the contact surface of the electromagnetic shielding film and the cover plate; coating the other side surface of the electromagnetic shielding film with gluing glue; arranging a protection plate on the electromagnetic shielding film and removing bubbles on the contact surface of the protection plate and the electromagnetic shielding film; and irradiating ultraviolet light to cure the gluing glue to obtain the electromagnetic shielding cover plate.

Optionally, before the ultraviolet light is irradiated to cure the glue, the method further includes: and removing residual bubbles on the contact surface of the electromagnetic shielding film and the cover plate and the contact surface of the protective plate and the electromagnetic shielding film by using a bubble removing device.

Optionally, before the applying the glue on the surface of the cover plate, the method further includes: and printing a preset pattern on the cover plate in a screen printing mode, wherein the preset region of the preset pattern is transparent.

Optionally, before the applying the glue on the surface of the cover plate, the method further includes: forming a design pattern on the substrate by adopting a photoetching process; growing a metal layer in the design pattern by adopting a selective electrodeposition process to form a metal pattern corresponding to the design pattern; and transferring the metal pattern onto the film by an imprinting process to form the electromagnetic shielding film.

Optionally, the transferring the metal pattern onto the thin film by using an imprinting process to form the electromagnetic shielding film includes: coating a light curing adhesive on the substrate on which the metal layer is formed, and covering a film on the light curing adhesive; irradiating by an ultraviolet lamp to cure the light curing adhesive; the thin film with the metal pattern formed thereon is peeled off as an electromagnetic shielding film.

Optionally, the electromagnetic shielding film is in a regular hexagonal mesh shape.

Optionally, before the applying the glue on the surface of the cover plate, the method further includes: an anti-reflection film layer and a high-transmittance anti-fingerprint film layer are laid on the protective plate.

Optionally, the cover plate is a glass cover plate, and the protection plate is a glass protection plate.

Optionally, before the applying the glue on the surface of the cover plate, the method further includes: and laying a black conductive metal film layer on the electromagnetic shielding film.

In another aspect of the embodiments of the present invention, a method for manufacturing an electromagnetic shielding cover plate is provided, where the method includes: and generating an electromagnetic shielding film on the glass cover plate by adopting a metal stripping process, wherein the electromagnetic shielding film is fixedly connected with the glass cover plate.

The embodiment of the invention has the beneficial effects that:

the preparation method of the electromagnetic shielding cover plate provided by the embodiment of the invention comprises the following steps: coating gluing glue on the surface of the cover plate; one side of the cover plate coated with the gluing glue is laid with an electromagnetic shielding film; removing bubbles on the contact surface of the electromagnetic shielding film and the cover plate; coating the other side surface of the electromagnetic shielding film with gluing glue; arranging a protection plate on the electromagnetic shielding film and removing bubbles on the contact surface of the protection plate and the electromagnetic shielding film; and irradiating ultraviolet light to cure the gluing glue to obtain the electromagnetic shielding cover plate. According to the method, the electromagnetic shielding cover is divided into three parts, namely the cover plate, the electromagnetic shielding film and the protective plate, the three parts can be independently processed, the processes are parallel, the three parts are bonded together through the gluing glue after the preparation is completed, the yield of the obtained electromagnetic shielding cover plate is higher, and the gluing glue is only needed to be adopted and ultraviolet rays are used for irradiating in the preparation process, so that the preparation cost of the electromagnetic shielding cover plate is lower, and the efficiency is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic flow chart of a method for manufacturing an electromagnetic shielding cover plate according to an embodiment of the present invention;

fig. 2 is a second schematic flow chart of a method for manufacturing an electromagnetic shielding cover plate according to an embodiment of the present invention;

fig. 3 is a third schematic flow chart of a method for manufacturing an electromagnetic shielding cover plate according to an embodiment of the present invention;

fig. 4 is a fourth flowchart illustrating a method for manufacturing an electromagnetic shielding cover plate according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is a schematic flow chart of a method for manufacturing an electromagnetic shielding cover plate according to an embodiment of the present invention, and referring to fig. 1, the embodiment provides a method for manufacturing an electromagnetic shielding cover plate, including:

s100: and coating the gluing glue on the surface of the cover plate.

The cover plate is a carrier for carrying the electromagnetic shielding film, is in a planar plate shape, and is used for supporting the electromagnetic shielding film.

The gluing glue coated on the cover plate is optical glue, the optical glue is a high molecular substance which has optical performance similar to that of an optical part and has excellent gluing performance, is mainly used for gluing special adhesives of transparent optical elements (such as lenses and the like), and has the characteristics of colorless transparency, light transmittance of over 90 percent, good gluing strength, capability of being cured at room temperature or middle temperature, small curing shrinkage and the like.

The coating method of the glue on the cover plate can be various, for example, the glue is spot-coated on a local area of the surface of the cover plate, or the glue is uniformly coated on the whole surface of the cover plate, as long as the stable adhesion between the cover plate and the electromagnetic shielding film can be ensured.

S200: and an electromagnetic shielding film is laid on one side of the cover plate coated with the gluing glue.

The electromagnetic shielding film is a thin film with a signal shielding function, and after the cover plate is coated with the gluing glue, the prepared electromagnetic shielding film is flatly laid on one side of the cover plate coated with the gluing glue, so that the gluing glue is filled between the electromagnetic shielding film and the cover plate. It should be understood that, in order to ensure the normal operation of the electro-magnetic shielding film, the surface of the electro-magnetic shielding film is ensured to be flat without wrinkles during the tiling process.

S300: and removing bubbles on the contact surface of the electromagnetic shielding film and the cover plate.

After tiling the electromagnetic shielding film on the apron, can have the bubble between electromagnetic shielding film and the apron, in order to guarantee the fastness of gluing between the two and prevent to influence electromagnetic shielding film's work, need get rid of the bubble between the contact surface of both, the mode of specifically getting rid of the bubble does not do the restriction in this embodiment, can get rid of through the form of manual pressure, also can get rid of through appurtenance.

S400: and coating the other side surface of the electromagnetic shielding film with gluing glue.

After one side of the electromagnetic shielding film is glued with the cover plate, the other side far away from the cover plate is still in an unprotected state, so that the other side of the electromagnetic shielding film is glued with the protection plate, the cover plate and the protection plate are respectively positioned at two sides of the electromagnetic shielding film, and the electromagnetic shielding film is supported and protected.

The glue coated on the other side of the electromagnetic shielding film is still optical glue, and the coating mode of the glue on the other side of the electromagnetic shielding film is not limited.

S500: a protective plate is provided on the electromagnetic shielding film and bubbles on the contact surface of the protective plate and the electromagnetic shielding film are removed.

The protective plate is a component for protecting the electromagnetic shielding film and has a planar plate shape, in this embodiment, the material of the protective plate is not limited as long as the protective plate can protect the electromagnetic shielding film and be bonded with the electromagnetic shielding film, for example, the material of the protective plate may be high-hardness transparent glass or high-hardness transparent resin film. It should be understood that the materials of the protection plate and the cover plate may be the same or different as long as both can perform their respective functions.

After the protection plate is covered on the electromagnetic shielding film, air bubbles can exist between the electromagnetic shielding film and the protection plate, in order to ensure the firmness of gluing between the electromagnetic shielding film and the protection plate and prevent the electromagnetic shielding film from being influenced, the air bubbles between the contact surfaces of the electromagnetic shielding film and the protection plate need to be removed, the specific air bubble removing mode is not limited in the embodiment, and the air bubbles can be removed in a manual pressing mode or can be removed through an auxiliary tool.

S600: and irradiating ultraviolet light to cure the gluing glue to obtain the electromagnetic shielding cover plate.

The gluing glue is optical glue which can be cured after being irradiated by ultraviolet light, so that two parts taking the optical glue as a medium are fixedly connected together. Therefore, after obtaining the three-layer structure of the cover plate, the electromagnetic shielding film and the protective plate, ultraviolet light needs to be irradiated on the three-layer structure to cure the glue in the interlayer of the three-layer structure, so that the three-layer structure becomes a firmly connected whole.

It should be noted that, in this embodiment, the manufacturing method of the cover plate, the electromagnetic shielding film and the protection plate is not limited as long as the cover plate, the electromagnetic shielding film and the protection plate meeting the process and function requirements can be obtained.

According to the preparation method of the electromagnetic shielding cover plate, the electromagnetic shielding cover is divided into three parts, namely the cover plate, the electromagnetic shielding film and the protective plate, the three parts can be independently processed, the processes are parallel, the three parts are bonded together through the gluing glue after the preparation is completed, the yield of the obtained electromagnetic shielding cover plate is higher, and only the gluing glue is needed and ultraviolet rays are used for irradiating in the preparation process, so that the preparation cost of the electromagnetic shielding cover plate is lower, and the efficiency is higher.

Fig. 2 is a second flow chart of the method for manufacturing an electromagnetic shielding cover plate according to the embodiment of the present invention, referring to fig. 2, optionally before the ultraviolet light is irradiated to cure the glue, the method further includes:

s700: and removing residual bubbles on the contact surface of the electromagnetic shielding film and the cover plate and the contact surface of the protective plate and the electromagnetic shielding film by using a bubble removing device.

Although the operation of removing bubbles has been performed during the process of sequentially laying the electromagnetic shielding film and the protection plate, micro bubbles (i.e., residual bubbles) invisible to the naked eye may still exist between the electromagnetic shielding film and the cover plate and the protection plate, and the existence of such micro bubbles may also affect the function of the manufactured electromagnetic shielding cover plate, and therefore, a professional bubble removing device is also required to completely remove the residual bubbles on the contact surface between the electromagnetic shielding film and the cover plate and the contact surface between the protection plate and the electromagnetic shielding film.

In this embodiment, the operation principle and structure of the bubble removing device are not limited as long as bubbles among the cover plate, the electromagnetic shielding film, and the protective plate can be completely removed. For example, the bubble removal device is a high-pressure bubble removal device, and the high-pressure bubble removal device adopts a physical method of vacuum pressurization to remove residual bubbles.

Optionally, before the surface of the cover plate is coated with the glue, the method further comprises:

and printing a preset pattern on the cover plate in a screen printing mode, wherein the preset region of the preset pattern is transparent.

According to the requirement of the cover plate in practical application, a preset pattern needs to be printed on the cover plate sometimes, so that the cover plate has different display effects and different functions. The setting of the preset pattern can affect the light transmission of the cover plate, if the cover plate is arranged around a device needing light transmission, such as a camera, the light transmission is needed at an area (namely, a preset area) corresponding to the light transmission device on the preset pattern, so as to avoid affecting the normal operation of the light transmission device.

Screen printing is a short for "screen printing". The silk screen printing refers to that a silk screen is used as a plate base, and a silk screen printing plate with pictures and texts is manufactured by a photosensitive plate making method. The preset patterns are printed in a silk-screen printing mode, the operation is simple, the efficiency is high, and the cover plate can realize good functions.

Fig. 3 is a third schematic flow chart of a method for manufacturing an electromagnetic shielding cover plate according to an embodiment of the present invention, referring to fig. 3, optionally, before the step of coating the gluing glue on the surface of the cover plate, the method further includes:

s810: a design pattern is formed on the substrate using a photolithography process.

The photolithography process is an important step in the semiconductor device manufacturing process, and the photolithography process uses exposure and development to write a geometric pattern structure on a photoresist layer, and then transfers the pattern on a photomask to a substrate by an etching process. The substrate referred to herein may be other than a silicon wafer, such as other metal layers, dielectric layers, e.g., glass, sapphire, etc.

In this embodiment, a design pattern is drawn on the substrate by using a photolithography process, and the shape of the design pattern is the same as the shape of the metal mesh grid required on the electromagnetic shielding film, so that the electromagnetic shielding film is manufactured by using the design pattern in a subsequent process. The substrate is a plate-shaped base material for engraving design patterns, and the material and structure of the substrate are not limited in this embodiment as long as the substrate can be used for engraving design patterns in a photolithography process.

S820: and growing a metal layer in the design pattern by adopting a selective electrodeposition process to form a metal pattern corresponding to the design pattern.

The metal pattern is grown in the design pattern, and the shape of the metal pattern is the same as the shape of the metal mesh grid required on the electromagnetic shielding film. And transferring the metal pattern to the film to obtain the metal mesh grid required by the electromagnetic shielding film.

And (3) growing a metal layer in the design pattern by adopting a selective electrodeposition process, namely placing the substrate with the design pattern in an electrodeposition tank cathode, placing a metal material to be deposited at an anode, and utilizing the selective deposition property of electrodeposition to deposit the metal material at the part where the design pattern is exposed, wherein the electrodeposition layer cannot be formed in the area covered by the photoresist. The deposition thickness of the metal material can be controlled by controlling the intensity of current applied to the electrodes, the deposition time, the distance between the cathode and the anode, etc. The electromagnetic shielding film is manufactured by utilizing selective electrodeposition, a metal mesh grid structure with the line width of hundreds of nanometers to micrometers can be manufactured, and the metal mesh grid is formed by deposition, so that high shielding efficiency can be realized while high light transmittance of the electromagnetic shielding film is ensured.

S830: and transferring the metal pattern onto the film by an imprinting process to form the electromagnetic shielding film.

The stamping is a forming method that the plate material is placed between an upper die and a lower die, the thickness of the material is changed under the action of pressure, and the extruded material is filled in the convex and concave parts of the die cavity with the fluctuant fine grains, so that the fluctuant bulges, characters or patterns are formed on the surface of the workpiece.

After the metal pattern is manufactured, the metal pattern is embedded in the film by adopting an embossing process instead of being adhered to the surface of the film, so that the surface of the obtained electromagnetic shielding film is not easily polluted and scratched.

The electromagnetic shielding film is manufactured by a photoetching technology, a selective electrodeposition process and an imprinting process, the line width of the obtained electromagnetic shielding film is between 300nm and 10um, the grid interval is between 1um and 500um, the thickness is between 300nm and 10um, the precision requirements of tiny lines and invisible naked eyes are met, and the rainbow line phenomenon is effectively reduced.

Fig. 4 is a fourth schematic flow chart of the method for manufacturing an electromagnetic shielding cover plate according to the embodiment of the present invention, referring to fig. 4, optionally, the step of transferring the metal pattern onto the thin film by using an imprinting process to form the electromagnetic shielding film includes:

s831: and coating a light curing adhesive on the substrate on which the metal layer is formed, and covering the light curing adhesive with a film.

The light curing glue is optical glue, the film is covered on one side of the substrate, on which the metal layer is formed, coated with the light curing glue, the covering mode is specifically flat laying, and the surface of the film is ensured to be flat without folds in the flat laying process.

S832: and irradiating by an ultraviolet lamp to cure the light curing adhesive.

The light curing glue is optical glue, and the optical glue is cured under the irradiation of ultraviolet light to bond the film on the substrate forming the metal layer.

S833: the thin film with the metal pattern formed thereon is peeled off as an electromagnetic shielding film.

The metal pattern is embedded on the surface of the film through the light curing adhesive and is adhered with the film, and before peeling, preset temperature and pressure can be applied to the film, so that the metal pattern is connected with the film more firmly after being transferred onto the film.

The electromagnetic shielding film manufactured by adopting the film inversion process has the thickness of only a few to more than ten microns, and can realize the manufacture of the ultrathin electromagnetic shielding film.

Optionally, the electromagnetic shielding film is in a regular hexagonal mesh shape.

The metal mesh grid on the electromagnetic shielding film is in a regular hexagon net shape, and the side edges of a plurality of regular hexagons are mutually connected to form a honeycomb structure. Under the condition of the same metal mesh thickness, the electromagnetic shielding effect of the regular hexagonal net structure is optimal.

Optionally, before the surface of the cover plate is coated with the glue, the method further comprises:

an anti-reflection film layer and a high-transmittance anti-fingerprint film layer are laid on the protective plate.

The anti-reflection film layer can increase the light transmittance of the protective plate, so that the image is clearer during photographing; the interference of greasy dirt and sweat that prevents that high fingerprint rete can be better is prevented to passing through to satisfy the camera apron to preventing the requirement of fingerprint. The anti-reflection film layer can be plated through a front magnetron sputtering process, and the high-transmittance anti-fingerprint film layer is plated through an electron beam evaporation process.

Optionally, the cover plate is a glass cover plate and the protection plate is a glass protection plate.

The glass cover plate and the glass protective plate are colorless and transparent, have high light transmittance, are easy to be glued with the electromagnetic shielding film, have high strength and can effectively protect and support the electromagnetic shielding film.

Optionally, before the surface of the cover plate is coated with the glue, the method further comprises:

and laying a black conductive metal film layer on the electromagnetic shielding film.

The black conductive metal film layer can effectively reduce the light scattering condition, and then reduce the rainbow line phenomenon.

The embodiment also provides a preparation method of the electromagnetic shielding cover plate, which comprises the following steps:

and generating an electromagnetic shielding film on the glass cover plate by adopting a metal stripping process, wherein the electromagnetic shielding film is fixedly connected with the glass cover plate.

The metal stripping process is that after a substrate is coated with photoresist, exposed and developed, a photoresist film with a certain pattern is used as a mask, metal required by glue evaporation is carried out, then the photoresist is removed, simultaneously, the metal on the glue film is stripped cleanly, and only the metal with the original pattern is left on the substrate.

The electromagnetic shielding film can be directly embedded into the surface of the glass cover plate by adopting a metal stripping process, so that the electromagnetic shielding film is fixedly connected with the glass cover plate. The method has the advantages of simple process, high efficiency, low preparation cost and higher yield of the obtained electromagnetic shielding cover plate.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.