CN210030457U

CN210030457U - Cover plate

Info

Publication number: CN210030457U
Application number: CN201822124187.2U
Authority: CN
Inventors: 刘志宇
Original assignee: Foshan Yi Shengda Technology Co Ltd
Current assignee: Foshan Yi Shengda Technology Co Ltd
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2020-02-07
Anticipated expiration: 2028-12-17

Abstract

The application discloses a cover plate. This apron includes transparent body and yellow thin layer, and the yellow thin layer setting is on a surface of transparent body, and includes metal level and ceramic colour layer at least, and the metal level setting is between transparent body and ceramic colour layer. This application apron can externally present ceramic yellow color, and cost and pollution are lower.

Description

Cover plate

Technical Field

The application relates to the technical field of cover plate coating, in particular to a cover plate.

Background

In recent years, as the speed of updating and iterating a terminal, such as a mobile phone, is increased, the material of the cover plate has undergone the development process of plastic, metal, ceramic and glass in sequence. In order to enhance the selling points and attraction points of the mobile phone, mobile phone manufacturers do much work on the appearance of the mobile phone, and the color of the appearance of the mobile phone is enriched continuously. Ceramic colored films with metallic (yellow) texture are receiving much attention and use in the 3C industry. There are various methods, such as dyeing, anodizing of aluminum alloy, painting spraying, etc., and coloring of PVD ceramic film.

In the long-term research and development process, the inventor of the application finds that the PVD prepared ceramic color film is widely applied to decorating base products such as metal, plastic and the like, and can stably prepare dozens of colors. However, a color film with metal texture (yellow) is prepared on a transparent glass cover plate, and the conventional method at present is to screen print a layer of color ink on the cover plate glass and then plate a layer of transparent film; or printing ink and plating a transparent film on the film, and then attaching the film to the glass cover plate. However, these methods are complicated in process, high in cost, and cause industrial pollution.

SUMMERY OF THE UTILITY MODEL

The application provides a apron, it can present ceramic yellow color, and can be with lower costs and pollution.

In order to solve the technical problem, the application adopts a technical scheme that: providing a cover plate comprising: transparent body and yellow thin layer, yellow thin layer set up on a surface of transparent body, and include metal level and ceramic colour layer at least, and the metal level setting is between transparent body and ceramic colour layer.

Wherein, the ceramic color layer comprises any one or combination of a TiN film layer, a ZrN film layer, a TiZrN film layer, a TiAlN film layer, a NiN film layer, a TiCN film layer, a ZrCN film layer, a TiZrCN film layer or a TiAlCN film layer.

Wherein the metal layer comprises a Cr layer, a Ti layer, a Zr layer, a TiAl layer or a TiSi layer.

Wherein the thickness range of the metal layer is 60nm-100nm, and the thickness range of the ceramic color layer is 500nm-1000 nm.

Wherein the thickness range of the metal layer is 80nm-100nm, and the thickness range of the ceramic color layer is 600nm-800 nm.

The cover plate further comprises a transparent layer, and the transparent layer is arranged between the transparent body and the yellow thin film layer and is used for adjusting the color of the yellow thin film layer.

Wherein the thickness of the transparent layer is 10nm-80 nm.

Wherein, the transparent layer comprises any one or combination of a titanium oxide film layer, a zirconium oxide film layer, a niobium oxide film layer or a silicon oxide film layer.

Wherein, the coordinate value of the yellow film layer in CIE LAB color space is: 65 ≦ L ≦ 85, 5 ≦ a ≦ 15, 10 ≦ b ≦ 20.

Wherein, a grating pattern layer is further arranged on the yellow film layer.

The beneficial effect of this application is: be different from prior art, this application embodiment apron includes transparent body and yellow thin layer, and yellow thin layer sets up on a surface of transparent body, and includes metal level and ceramic color layer at least, and the metal level setting is between transparent body and ceramic color layer. Through this kind of mode, can make the apron present to have ceramic yellow color through yellow thin layer, and need not to adopt the mode realization ceramic yellow color of traditional silk screen printing ink layer or film, consequently can reduction in production cost and pollution.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of a cover plate according to the present application;

FIG. 2 is a schematic flow chart illustrating an embodiment of a method for manufacturing the cover plate of the embodiment of FIG. 1;

FIG. 3 is a schematic flow chart of step S201 in the implementation of FIG. 2;

FIG. 4 is a schematic structural view of a second embodiment of the cover plate of the present application;

FIG. 5 is a schematic structural view of a third embodiment of the cover plate of the present application;

FIG. 6 is a schematic structural view of a fourth embodiment of the cover plate of the present application;

fig. 7 is a schematic structural diagram of an embodiment of the terminal of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. 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 application.

The present application firstly proposes a cover plate, as shown in fig. 1, the cover plate 101 of the present embodiment includes a transparent body 102 and a yellow thin film layer 103, the yellow thin film layer 103 is disposed on a surface of the transparent body 102 and at least includes a metal layer 104 and a ceramic color layer 105, the metal layer 104 is disposed between the transparent body 102 and the ceramic color layer 105, that is, the metal layer 104 and the ceramic color layer 105 are sequentially stacked on the transparent body 102.

The metal layer 104 of the present embodiment is used to improve the adhesion between the ceramic color layer 105 and the transparent body 102.

Optionally, the thickness of the metal layer is 50-100nm, and the ceramic color layer 105 adheres to the transparent body 102.

The cover plate 101 of this embodiment may be a rear cover of a terminal, such as a rear cover of a mobile phone. When the cover 101 is mounted on the terminal body, the side of the cover 101 where the ceramic color layer 105 is disposed close to the terminal body, i.e., the transparent body 102 is the outside of the terminal.

In other embodiments, the cover plate can also be used for products such as household appliances, automobiles and the like.

This embodiment can make the apron present ceramic yellow color through yellow thin layer 103 on transparent body 102, and need not to adopt the mode realization ceramic yellow color of traditional silk screen printing ink layer or film, consequently can reduction in production cost and pollution.

Further, in view of the materials of the transparent body 102, the metal layer 104 and the ceramic color layer 105, in order to achieve the above effect, the material of the transparent body 102 may include a transparent material such as glass, ceramic, polystyrene or polymethylmethacrylate; the ceramic color layer 105 may include any one or a combination of a titanium nitride (TiN) film layer, a zirconium nitride (ZrN) film layer, a titanium zirconium nitride (TiZrN) film layer, a titanium aluminum nitride (TiAlN) film layer, a nickel nitride (NiN) film layer, a titanium carbonitride (TiCN) film layer, a zirconium carbonitride (ZrCN) film layer, a titanium zirconium carbonitride (TiZrCN) film layer, or a titanium aluminum carbonitride (TiAlCN) film layer, etc.; the metal layer 104 may include a chromium (Cr) layer, a titanium (Ti) layer, a zirconium (Zr) layer, a titanium aluminum (TiAl) layer, a titanium silicon (TiSi) layer, or the like.

Further, in view of the thicknesses of the metal layer 104 and the ceramic color layer 105, in order to achieve the above effect, the thickness of the metal layer 104 may range from 60nm to 100nm, and specifically, the thicknesses may be 60nm, 70nm, 80nm, 90nm, 100nm, and the like; the thickness of the ceramic color layer 105 may be 500nm to 1000nm, and the thickness may be 500nm, 600nm, 700nm, 800nm, 900nm, 1000nm, or the like.

In a specific application, the thickness of the metal layer 104 is preferably in the range of 80nm to 100nm, and the thickness may be 80nm, 85nm, 90nm, 95nm, 100nm, etc.; the thickness of the ceramic color layer 105 is preferably in the range of 600nm to 800nm, and the thickness may be specifically 600nm, 650nm, 700nm, 750nm, 800nm, and the like.

In one specific application, the coordinate values of the yellow film layer 103 in the CIE LAB color space are: 65 ≦ L ≦ 85, 5 ≦ a ≦ 15, 10 ≦ b ≦ 20.

Further, the cover plate 101 of the present embodiment may be manufactured by a method as shown in fig. 2, specifically, the method of the present embodiment includes the steps of:

s201: the surface of the transparent body 102 is cleaned and dried to achieve the surface cleanliness required by the coating process.

Since the cleanliness of the surface of the transparent body 102 greatly affects the coating process, the transparent body 102 needs to be cleaned in a manner with a better cleaning effect, and the embodiment can clean and dry the transparent body 102 in an ultrasonic cleaning manner.

In a specific application, step S201 may be implemented by the method as described in fig. 3, and the following steps are specifically implemented in this embodiment:

s301: the cleaning agent is added into the first tank, heated to a first preset temperature, and then the transparent body 102 is placed into the first tank and soaked for 3 minutes.

S302: and adding a cleaning agent into the second tank, heating the cleaning agent to a second preset temperature, then putting the transparent body 102 into the second tank, and cleaning the transparent body 102 for 2 minutes in a spraying cleaning mode.

S303: pure water was added to the third tank, and the transparent body 102 was placed in the third tank, and then the transparent body 102 was cleaned by ultrasonic cleaning for 2 minutes.

S304: adding an ultrasonic cleaning agent into the fourth groove, putting the transparent body 102 into the fourth groove, and cleaning the transparent body 102 for 2 minutes by an ultrasonic cleaning mode.

S305: pure water was added to the fifth tank and the sixth tank, and the transparent body 102 was put in the fifth tank, and then the transparent body 102 was cleaned by ultrasonic cleaning for 5 minutes, and then the transparent body 102 was put in the sixth tank, and the transparent body 102 was cleaned by ultrasonic cleaning for 5 minutes.

S306: and putting the transparent body 102 into a seventh groove for dehydration, and putting the dehydrated transparent body 102 into an eighth groove and a ninth groove in sequence for hot drying and dehydration. .

The first tank to the fourth tank are common cleaning tanks, the fifth tank and the sixth tank are ultrasonic tanks, the seventh tank is a slow-pulling tank dehydration tank, and the eighth tank and the ninth tank are drying tanks.

The above-mentioned cleaning/drying process, cleaning/drying temperature and cleaning/drying time can be adaptively modified according to the material of the transparent body 102, the surface roughness and other factors; in this embodiment, the surface cleanliness of the transparent plate 102 after each cleaning can be automatically detected by the detector, and the subsequent cleaning/drying process, cleaning/drying temperature and cleaning/drying time can be adjusted or planned according to the cleanliness, so as to improve the cleaning and drying efficiency and effect of the transparent body 102.

Further, the transparent body 102 after the heat drying and dehydration is placed on a coating vehicle to prepare for vacuum sputtering coating processing.

S202: and sputtering a coating film on the surface of the cleaned transparent body 102 to form a metal layer 104 and a ceramic color layer 105 on the surface of the cleaned transparent body 102 in sequence.

Specifically, a metal layer 104 is formed on the surface of the transparent body 102 by vacuum sputtering, and then a ceramic color layer 105 is formed on the surface of the metal layer 104 facing away from the transparent body 102 by vacuum sputtering.

In the above steps, the transparent body 102, the metal layer 104 and the ceramic color layer 105 may adopt various materials described above. Further, the physical properties of the transparent body 102, the metal layer 104, and the ceramic color layer 105, as well as the film layer thickness, may be set to various numerical ranges described above.

The vacuum sputtering of the embodiment can adopt one or a combination of medium-frequency reactive sputtering, radio-frequency sputtering, high-energy pulse sputtering and magnetron sputtering. Among them, medium-frequency reactive sputtering is preferably employed.

In other embodiments, a black thin film layer and a transparent hard layer may be formed on the surface of the cleaned transparent body by using a process such as optical coating, Physical Vapor Deposition (PVD), Chemical Vapor Deposition (CVD), Plasma Enhanced Chemical Vapor Deposition (PECVD), reactive DC etching, and the like.

Be different from prior art, this embodiment can make the apron present to have ceramic yellow color through yellow thin layer 103, and need not to adopt the mode realization ceramic yellow color of traditional silk screen printing ink layer or film, consequently can reduction in production cost and pollution.

The present application further proposes a cover plate of the second embodiment, as shown in fig. 4, a cover plate 401 of the present embodiment further includes a transparent layer 402 on the basis of the embodiment of fig. 1, the transparent layer 402 is disposed between a transparent body 403 and a yellow thin film layer 404, specifically, the transparent layer 402 is disposed between the transparent body 403 and a metal layer 405. The transparent layer 402 is used to adjust the color of the yellow thin film layer 404 and to improve the bonding force between the transparent body 403 and the yellow thin film layer 404.

The thickness of the transparent layer 402 may be set according to the wavelength range of the yellow color of the ceramic, for example, the thickness range of the transparent layer 602 may be 10-80nm, and the thickness may be 10nm, 30nm, 50nm, 70nm, 80nm, and the like. The transparent layer 402 may include a titanium oxide film layer, a zirconium oxide film layer, a niobium oxide film layer, a silicon oxide film layer, or the like.

Different from the prior art, in the embodiment, the transparent layer 402 is disposed between the transparent body 403 and the yellow thin film layer 404, so that the color value of the yellow thin film layer 404 can be adjusted, and the bonding force between the transparent body 403 and the yellow thin film layer 404 can be improved.

To further enhance the appearance of the cover plate, the present application further proposes a cover plate of the third embodiment, as shown in fig. 5, the cover plate 501 of the present embodiment further includes a grating pattern layer 502, and the grating pattern layer 502 is disposed on a side of the yellow film layer 503 facing away from the transparent body 504.

The grating pattern layer 502 includes a plurality of grating stripes arranged at intervals, and a nano-microstructure is formed in a gap between two adjacent grating stripes, so that the grating stripes and the gap have different optical characteristics, so as to form a grating pattern on the grating pattern layer 502.

Further, a reflective layer (not shown) may be further disposed on a side of the grating pattern layer 502 facing away from the yellow thin film layer 503.

Of course, in other embodiments, the lenticular pattern layer may be replaced with a pattern layer, which may be formed on the transparent body by a screen printing process. The pattern layer can comprise specific pattern marks, such as Logo of the product, required descriptive words of the product, product patterns, patterns and the like. In other embodiments, the pattern or Logo may be formed on the underlying layer by laser engraving, chemical etching, ink printing, and the like, which are not limited herein.

In another embodiment, in order to further enrich the appearance effect of the cover plate, the first color layer may further include a texture layer, the texture layer may be at least one of a magnetic texture layer, a UV transfer texture layer, and a thermal transfer texture layer, and the specific pattern of the texture layer may be flexibly selected according to actual requirements. In embodiments of the present application, the pattern may be a gradient texture pattern.

The method for forming the magnetic texture layer can be magnetic spraying, that is, in the spraying process, the distribution of the magnetic material is controlled by a magnetic field, so that the required texture pattern is formed.

The method for forming the UV transfer printing texture layer can be to utilize UV transfer printing and impression processing, namely, outputting a designed texture pattern into a photo-drawing film or a glass film by using a laser photo-drawing machine, coating a release layer on a membrane substrate or a gradient color layer, coating UV glue on the release layer, closely attaching the membrane substrate or the gradient color layer coated with the UV glue to the photo-drawing film or the glass film, carrying out exposure imaging, and further forming the texture pattern layer on the membrane substrate.

The method for forming the heat transfer texture layer can be that the PVC heat transfer film is pasted on the membrane substrate or the gradient color layer, is baked for a preset time at a preset temperature, and then the PVC film is peeled off, so that the heat transfer texture is obtained.

In this way, the cover plate can be further made to exhibit a pattern-specific pattern, a grain pattern, or the like, in addition to the above-described effects.

The present application further provides a cover plate of a fourth embodiment, as shown in fig. 6, the cover plate 601 of this embodiment further includes a gradient color layer 602, the gradient color layer 602 includes a first ceramic color layer (not shown) and a second ceramic color layer (not shown), the first ceramic color layer of this embodiment is the same as the ceramic color layer of the above embodiment, and details are not repeated here.

The second ceramic color layer of this embodiment is disposed on a side of the first ceramic color layer departing from the metal layer 603, and the area of the second ceramic color layer is smaller than that of the first ceramic color layer, so that when the first ceramic color layer is observed from a side of the transparent body 604 departing from the transparent body 703, the color of the overlapping region of the first ceramic color layer and the second ceramic color layer is different from the color of other regions of the first ceramic color layer not covered by the second ceramic color layer.

The first ceramic color layer of this embodiment is a translucent color layer.

In this embodiment, the second color layer with a smaller area is disposed on the first ceramic color layer, so that the cover plate 601 can present yellow with two different chromaticities or color values, and the cover plate 601 can present a gradually-changed ceramic yellow color.

Therein, the graded color layer 602 may be deposited on the metal layer 603 by, for example, optical coating, Physical Vapor Deposition (PVD), Chemical Vapor Deposition (CVD), Plasma Enhanced Chemical Vapor Deposition (PECVD), reactive DC spray, RF sputtering, or magnetron sputtering.

In other embodiments, the gradient color layer may further include more than two color layers, wherein each color layer may be formed by mixing the nano-structured color crystals with the gloss oil. The nanostructure color crystals may be obtained by crushing a multilayer optical interference film, and the multilayer optical interference film may have a structure in which first refractive index ceramic color layers L1, L2 and second refractive index ceramic color layers H1, H2, and H3 are alternately deposited, that is, the multilayer optical interference film may include a second refractive index ceramic color layer H1, a first refractive index ceramic color layer L1, a second refractive index ceramic color layer H3, a first refractive index ceramic color layer L2, and a second refractive index ceramic color layer H2, which are sequentially stacked.

In a specific application, a first ceramic color layer may be disposed on the metal layer 603 by a plating process, and a second ceramic color layer may be disposed on at least a partial surface of the first ceramic color layer.

Specifically, at least partial surface of the first ceramic color layer is sprayed with a color layer material to form a second ceramic color layer. After waiting for the first ceramic color layer to dry, a second ceramic color layer can be sprayed and covered on the surface of the first ceramic color layer. The thickness of the second ceramic color layer can be gradually thinned from the left side boundary to the right side boundary of the first ceramic color layer during spraying, so that a gradual change effect is obtained. Or after waiting for the first ceramic color layer to dry, at least one second ceramic color layer may be sprayed on the local surface of the first ceramic color layer. In other embodiments, after the second ceramic color layer is dried, a medium may be sprayed on at least a partial surface of the second ceramic color layer to form a third ceramic color layer. The first ceramic color layer, the second ceramic color layer and the third ceramic color layer have the same thickness, but the covered area is gradually reduced. For example, the coverage area of the first ceramic color layer is 100% of the coverage area of the metal layer 603, the coverage area of the second ceramic color layer is 70% of the coverage area of the metal layer 603, and the coverage area of the third ceramic color layer is 30% of the coverage area of the metal layer 603. And are not limited herein.

The materials of the first ceramic color layer, the second ceramic color layer, and the third ceramic color layer are the same as those of the ceramic color layers of the above embodiments, and are not described herein again.

Through the mode, set up gradual change chromatograph 602 on metal layer 603, can make apron 601 have gradual change color for apron 601 surface has abundant outward appearance effect, has promoted the outward appearance aesthetic feeling of product, thereby satisfies the demand of consumer to the outward appearance effect of terminal.

Of course, in other embodiments, the second ceramic color layer may be disposed between the first ceramic color layer and the metal layer such that the color of the area of the first ceramic color layer covered by the second ceramic color layer is different from the color of the area of the first ceramic color layer not covered by the second ceramic color layer when viewed from the side facing away from the transparent body.

In one embodiment, the yellow thin film layer may include a pattern layer, a texture layer, and a gradient layer or any two of these three layers.

In an embodiment, the cover plate may further include an anti-reflection layer, and the anti-reflection layer may be disposed between the transparent body and the yellow thin film layer.

In one embodiment, the cover plate can further comprise an anti-fingerprint layer arranged on one side of the transparent body, which faces away from the yellow thin film layer. Wherein the anti-fingerprint layer comprises a polymer coating with hydrophobic and oleophobic properties or a coating of a suitable material.

In another embodiment, in order to increase the hardness of the cover plate, a transparent hardening layer can be further arranged on one side of the transparent body, which is away from the yellow thin film layer. The material of the transparent hard layer comprises at least one or a combination of nitride and diamond-like carbon. The nitride may also be a boronitride or a carbonitride.

The present application further provides a terminal, as shown in fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the terminal of the present application. A cover 702 is arranged on the back side (the side facing away from the display) of the terminal 701 and the transparent body of the cover 702 is arranged facing away from the terminal 701, i.e. the transparent body is the outer side of the terminal 701. The cover 702 of this embodiment may be the cover of each of the above embodiments, and the structure and the operation principle thereof are not described herein.

The terminal 701 of the embodiment may include a mobile phone, a tablet computer, or a wearable device.

Be different from prior art, this application embodiment apron includes transparent body and yellow thin layer, and yellow thin layer sets up on a surface of transparent body, and includes metal level and ceramic color layer at least, and the metal level setting is between transparent body and ceramic color layer. Through this kind of mode, can make the apron present to have ceramic yellow color through yellow thin layer, and need not to adopt the mode realization ceramic yellow color of traditional silk screen printing ink layer or film, consequently can reduction in production cost and pollution.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A cover plate is characterized by comprising a transparent body and a yellow thin film layer, wherein the yellow thin film layer is arranged on one surface of the transparent body and at least comprises a metal layer and a ceramic color layer, and the metal layer is arranged between the transparent body and the ceramic color layer;

the ceramic color layer comprises any one or combination of a TiN film layer, a ZrN film layer, a TiZrN film layer, a TiAlN film layer, a NiN film layer, a TiCN film layer, a ZrCN film layer, a TiZrCN film layer or a TiAlCN film layer;

the metal layer includes a Cr layer, a Ti layer, a Zr layer, a TiAl layer or a TiSi layer.

2. The cover sheet according to claim 1, wherein the metal layer has a thickness in the range of 60nm to 100nm and the ceramic color layer has a thickness in the range of 500nm to 1000 nm.

3. The cover sheet according to claim 2, wherein the metal layer has a thickness in the range of 80nm to 100nm and the ceramic color layer has a thickness in the range of 600nm to 800 nm.

4. The cover sheet according to claim 1, further comprising a transparent layer disposed between the transparent body and the yellow thin film layer and for adjusting a color of the yellow thin film layer.

5. The cover plate according to claim 4, wherein the transparent layer has a thickness in the range of 10nm-80 nm.

6. The cover sheet of claim 5, wherein the transparent layer comprises any one or combination of a titanium oxide film layer, a zirconium oxide film layer, a niobium oxide film layer, or a silicon oxide film layer.

7. The cover sheet of claim 1, wherein the yellow film layer has coordinate values in CIE LAB color space of: 65 ≦ L ≦ 85, 5 ≦ a ≦ 15, 10 ≦ b ≦ 20.

8. The decking of claim 1, wherein the yellow film layer is further provided with a lenticular pattern layer thereon.