CN114347708A

CN114347708A - Electronic device, shell, diaphragm and preparation method of diaphragm

Info

Publication number: CN114347708A
Application number: CN202111661403.7A
Authority: CN
Inventors: 汤功奥; 邱惊龙
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-15

Abstract

The application provides an electronic device, a shell, a diaphragm and a preparation method of the diaphragm; the preparation method comprises the following steps: plating a first color film layer on the surface of a base material; partially shielding the first color film layer to form a shielding area and an exposed area on the first color film layer; removing the first color film layer in the exposed area; and plating a second color film layer in the exposed area. According to the preparation method of the membrane, two or more color appearance effects are realized on the same membrane substrate in the modes of coating, local shielding, local membrane removing and re-coating. The preparation method of the diaphragm provided by the embodiment of the application can realize seamless splicing of two or more colors visually on the same diaphragm, meets the test reliability, enriches the appearance effect of the shell (or the lens), avoids the problem of black line shielding of double-lamination diaphragms, and greatly improves the appearance expressive force of products.

Description

Electronic device, shell, diaphragm and preparation method of diaphragm

Technical Field

The invention relates to the technical field of electronic equipment shell preparation processes, in particular to electronic equipment, a shell, a diaphragm and a preparation method of the diaphragm.

Background

The manufacturing process of the shell of the electronic equipment and the camera decorative lens in the conventional technical scheme comprises the following steps: film-forming appearance effect layer-laminating. The prior membrane technology can only electroplate one color on the same membrane, and realizes visual bright and dark layering by mainly depending on the texture difference of different areas, and the membrane has lower color integration level; if the texture of realizing camera decorative lens or the different regions of casing has two or more colors at present, must adopt the mode of two laminating diaphragms, however this scheme can't realize visual seamless joint (off normal/cover position) at two diaphragm overlap joint departments, need be at glass surface silk screen printing ink as shielding, this apparent expressive force that will greatly reduce the product.

Disclosure of Invention

In a first aspect, an embodiment of the present application provides a method for manufacturing a membrane, where the method includes:

plating a first color film layer on the surface of a base material;

partially shielding the first color film layer to form a shielding area and an exposed area on the first color film layer;

removing the first color film layer in the exposed area;

and plating a second color film layer in the exposed area.

In a second aspect, an embodiment of the present application provides a membrane, the membrane includes a substrate, the surface of substrate is equipped with first colour rete and the second colour rete of adjacent setting, be equipped with on the first colour rete and shield the printing ink layer.

In a third aspect, an embodiment of the present application provides a membrane, where the membrane includes a substrate, where a first appearance region and a second appearance region are adjacently disposed on one side surface of the substrate; the first appearance area is sequentially stacked with a first color film layer, a shielding ink layer and a second color film layer, and the second appearance area is provided with a second color film layer.

In a fourth aspect, embodiments of the present application provide a housing of an electronic device, where the housing includes a transparent substrate and a membrane prepared by the preparation method described in any one of the above embodiments; and the transparent substrate is attached to the surface of the membrane base material, which is away from the first color membrane layer.

In addition, this application embodiment provides an electronic equipment again, its characterized in that, electronic equipment include display screen, control circuit board and the casing in the above-mentioned embodiment, the casing with the display screen cooperation is formed with accommodation space, control circuit board locates in the accommodation space, and with the display screen electricity is connected.

According to the preparation method of the membrane, two or more color appearance effects are realized on the same membrane substrate in the modes of coating, local shielding, local membrane removing and re-coating. The preparation method of the diaphragm provided by the embodiment of the application can realize seamless splicing of two or more colors visually on the same diaphragm, meets the reliability of the test, enriches the appearance effect of the shell (lens), avoids the problem of black line shielding of double-lamination diaphragms and greatly improves the appearance expressive force of products.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic flow chart of an embodiment of a method for producing a membrane of the present application;

FIG. 2 is a schematic structural diagram of the substrate with the first color film plated thereon in this embodiment;

FIG. 3 is a schematic diagram of a structure after forming a shielding layer;

FIG. 4 is a schematic structural diagram of the first color film layer in the exposed area after being removed;

FIG. 5 is a schematic structural diagram of an embodiment of the film after a second color film layer is formed;

FIG. 6 is a schematic structural diagram of another embodiment of the film after a second color film layer is formed;

FIG. 7 is a schematic diagram of a diaphragm structure for a camera lens;

FIG. 8 is a schematic flow chart of another embodiment of a method for making a membrane of the present application;

FIG. 9 is a schematic structural view of an embodiment after a UV textured layer is formed on the surface of a substrate;

FIG. 10 is a schematic structural view of another embodiment after a UV textured layer is formed on the surface of a substrate;

FIG. 11 is a schematic structural view of yet another embodiment of a membrane formed by the fabrication method of the present application;

FIG. 12 is a schematic structural view of yet another embodiment of a membrane formed by the fabrication method of the present application;

FIG. 13 is a schematic structural diagram of an embodiment of a housing of an electronic device of the present application;

FIG. 14 is a schematic structural diagram of an embodiment of an electronic device of the present application;

FIG. 15 is a schematic cross-sectional view taken along line A-A in the embodiment of FIG. 14;

fig. 16 is a block diagram illustrating a structural composition of an embodiment of an electronic device according to the present application.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only illustrative of the present invention, and do not limit the scope of the present invention. Likewise, the following examples are only some but not all examples of the present invention, and all other examples obtained by those skilled in the art without any inventive step are within the scope of the present invention.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As used herein, an "electronic device" (or simply "terminal") includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.

Referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of a method for manufacturing a film according to the present application, and it should be noted that the film is used for a housing and a camera lens of an electronic device, and the electronic device may include a mobile phone, a tablet computer, a notebook computer, a wearable device, and the like. The preparation method of the membrane comprises but is not limited to the following steps. It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the embodiments of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.

Step S100, plating a first color film layer on the surface of the base material.

Referring to fig. 2, fig. 2 is a schematic structural view of the substrate with the first color film plated on the surface thereof in this embodiment. The base material 110 may be made of resin material, such as PET (Polyethylene terephthalate, commonly called polyester resin) or PI (Polyimide, abbreviated as PI). The thickness of the substrate 110 may be 25-50 um. The first color film layer 120 can be formed by coating different layers of materials with different refractive indexes on the substrate 110 by an evaporation coater in a vacuum environment, so as to show colorful and gorgeous colors. Principle of formation of color of the first color film layer 120: incident light (such as 7 colors of visible light) is alternately reflected, refracted and transmitted through two or more than two media (coating layers) with high refractive index and low refractive index through optical coating, the required color is reflected, the unnecessary color is refracted and transmitted, and the purer required color is obtained through multi-layer superposition, multiple reflection, refraction and transmission. The film system structure design is realized by selecting the film coating materials with high and low refractive indexes and matching different film thicknesses according to a curve formed by the reflectivity or transmissivity of a certain color in a certain wave band, and meanwhile, the adhesive force between the film coating materials and different interfaces is required to be considered. Common coating materials are silicon dioxide, titanium dioxide, trititanium pentoxide, zirconium oxide, and the like. By their different thickness and stacking design, the desired effect is achieved. Alternatively, the thickness of the first color film layer 120 may be 20-2000 nm. Optical coating parameters: the vacuum degree is 1.5E-3 Pa; working pressure is 1.1-5.5E-1 Pa, furnace temperature: 40-80 ℃, target: a Si target or a Ti target.

Referring to fig. 1, the method further includes a step S200 of partially shielding the first color film layer to form a shielded region and an exposed region on the first color film layer.

Referring to fig. 3, fig. 3 is a schematic structural diagram after forming a shielding layer, wherein in this step, a shielding ink layer 130 may be formed in a local area of the first color film layer 120 by silk-screen printing, a shielding area is formed in an area shielded by the shielding ink layer 130, and other areas are exposed areas. The material of the shielding ink layer 130 may be an acrylic acid/epoxy phenolic resin system ink, which plays a role in shielding protection.

Referring to fig. 1, the method further includes a step S300 of removing the first color film layer in the exposed region.

Referring to fig. 4, fig. 4 is a schematic structural view of the exposed area after the first color film is removed, and in step S300, a flat plate cleaning machine may be specifically used to remove the first color film 120 which is not shielded and protected by the shielding ink layer 130 (the shielding ink layer 130 is not affected by the plating remover). A drying step, not shown, may also be included after this step.

Referring to fig. 1, the method further includes a step S400 of plating a second color film layer in the exposed region.

Referring to fig. 5 and fig. 6 together, fig. 5 is a schematic structural diagram of an embodiment after the second color film layer is formed on the film, and fig. 6 is a schematic structural diagram of another embodiment after the second color film layer is formed on the film, wherein the second color film layer 140 of the film 100 in the embodiment of fig. 5 is only plated in the exposed region (i.e., the second appearance region is formed), and the second color film layer 140 of the film 100 in the embodiment of fig. 6 covers the exposed region and the shielding ink layer 130 (the corresponding shielding region, i.e., the first appearance region). The color effect of the second color film layer 140 may be different from that of the first color film layer 120, so that two or more color effects are presented in one plane. For the specific coating method, parameters, materials, and other characteristics of the second color film layer 140, reference may be made to the correlation of the first color film layer 120, and details thereof are not repeated here.

Referring to fig. 7, fig. 7 is a schematic diagram of a structure of a film for a camera lens, where different areas (10a, 10b, 10c) marked on the film 100 can be displayed with various colors and appearance textures by the method (coating, local stripping, and re-coating) in the embodiment of the present application. In the embodiment, only two-color coating is taken as an example for illustration, and the method (coating, local stripping, re-coating) in the embodiment of the present application can be used for performing a multi-color splicing design, which is not listed and described in detail herein. In addition, in some other embodiments, the appearance effect of the film is not limited to the first color film 120 and the second color film 140, and may be combined with other effects, such as AG fogging surface, low-flash AG, etc., all of which can be used on the double-plated or multi-plated film to achieve a colorful appearance. It should be noted that the terms "first", "second" and "third" in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Referring to fig. 8, fig. 8 is a schematic flow chart of another embodiment of a method for manufacturing a film according to the present application, wherein the method includes, but is not limited to, the following steps.

Step S500, forming a UV texture layer on the surface of the substrate.

Referring to fig. 9, fig. 9 is a schematic structural diagram of an embodiment after a UV texture layer is formed on a surface of a substrate. The UV texture layer 150 may be formed by coating UV glue on the surface of the texture mold and transferring the texture pattern to the base material 110 by a roll.

Referring to fig. 10, fig. 10 is a schematic structural diagram of another embodiment after a UV texture layer is formed on a surface of a substrate, in which the UV texture layer 150 in the embodiment may be a designed splicing texture pattern (in the embodiment, the UV texture layer includes two

portions

151 and 152, and in some other embodiments, more splicing manners may be adopted) so as to cooperate with a color film layer formed in a subsequent step to present different appearance effects. It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Referring to fig. 8, the method further includes a step S600 of forming a first color film layer on the UV texture layer.

For the specific coating method, parameters, materials, and other characteristics of the first color film layer, reference may be made to the related embodiments, and details are not repeated here.

Referring to fig. 8, the method further includes a step S200 of partially shielding the first color film layer to form a shielded region and an exposed region on the first color film layer.

In this embodiment, the masking region and the exposed region may also be formed by using a masking ink layer. The material of the shielding ink layer can be acrylic acid/epoxy phenolic resin system ink.

Referring to fig. 8, the method further includes a step S300 of removing the first color film layer in the exposed region.

In step S300, a plate cleaning machine may be specifically used to remove the first color film layer that is not shielded and protected by the shielding ink layer (the plating-removing liquid does not act on the shielding ink layer) under the action of the plating-removing liquid.

Referring to fig. 8, the method further includes a step S400 of plating a second color film layer in the exposed region.

Similarly, the second color film layer may be plated only on the exposed region, or may cover both the exposed region and the shielding ink layer (corresponding shielding region). The color effect of the second color film layer can be different from that of the first color film layer, so that two or more color effects can be presented in one plane.

Referring to fig. 8, the method further includes step S700, forming a bottom-covering ink layer on the second color film layer.

Referring to fig. 11 and 12 together, fig. 11 is a schematic structural diagram of a diaphragm formed by the manufacturing method of the present application according to still another embodiment, and fig. 12 is a schematic structural diagram of a diaphragm formed by the manufacturing method of the present application according to still another embodiment. The bottom-covering ink layer 160 is formed on the second color film layer 140. The capping ink layer 160 may be formed by silk printing. The difference between the embodiments of fig. 11 and fig. 12 is that the second color film layer 140 is plated only on the exposed region in fig. 11, and the second color film layer 140 covers the exposed region and the shielding ink layer 130 (corresponding to the shielded region) in the embodiment of fig. 12. The diaphragm in this embodiment forms two appearance areas (a first appearance area and a second appearance area) corresponding to the left and right shielding areas and the non-shielding areas in the figure.

Optionally, an embodiment of the present application further provides a housing of an electronic device, where the housing may be a rear shell of the electronic device, a camera decorative lens, and the like. Referring to fig. 13, fig. 13 is a schematic structural diagram of an embodiment of a housing of an electronic device of the present application, in which the housing 10 includes a transparent substrate 200 and a film 100 prepared by the above-described preparation method; the transparent substrate 200 is attached to the surface of the base material of the film 100, which is away from the first color film layer. In the drawings, only one structure of the diaphragm 100 will be described as an example. The transparent substrate 200 may be made of any one of glass, ceramic, plastic, sapphire, and hard resin (e.g., acryl). The thickness of the transparent substrate 200 may be in the range of 0.2-1 mm.

Before the transparent substrate 200 is attached to the membrane 100, the process of etching, thinning, strengthening and splitting the transparent substrate 200 may be further included. Specifically, the etching thinning is to thin the transparent substrate 200 by using a chemical etching solution, and obtain a chamfer and an etching depth of a certain size. The strengthening is performed by ion exchange of the transparent substrate 200 (generally, glass material) by chemical strengthening, and a certain strength is obtained. The splitting is to split the glass on the middle piece into small pieces by using a splitting jig so as to facilitate the attachment of the membrane 100. Specifically, the manufactured film 100 may be bonded to the surface of the transparent substrate 200 by a CCD automatic bonding machine, and bubbles may be removed by a defoaming machine, thereby forming a finished product of the camera decorative lens or the housing.

Further, an electronic device is provided in an embodiment of the present application, please refer to fig. 14 and fig. 15 together, fig. 14 is a schematic structural diagram of an embodiment of the electronic device of the present application, and fig. 15 is a schematic sectional structural diagram at a-a in the embodiment of fig. 14, where the electronic device in the present embodiment may include a display screen 30, a housing 10, and a control circuit board 20. The structure and the manufacturing method of the housing 10 are as described in the foregoing embodiments (in this embodiment, the housing is taken as a rear cover of a mobile phone and a camera lens for example), and are not described herein again.

Optionally, the display screen 30 and the housing 10 (back cover and camera lens) cooperate to form an accommodating space 1000, the control circuit board 20 is disposed in the accommodating space 1000, the control circuit board 20 is electrically connected to the display screen 30, and the control circuit board 20 is configured to control the display screen 30 to work. The detailed technical features of other parts of the electronic device are within the understanding of those skilled in the art, and are not described herein.

Referring to fig. 16, fig. 16 is a block diagram illustrating a structural composition of an embodiment of an electronic device according to the present application, where the electronic device may be a mobile phone, a tablet computer, a notebook computer, a wearable device, and the like, and the embodiment illustrates a mobile phone as an example. The electronic device may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (i.e., the display screen 30 in the above-described embodiment), a sensor 950, an audio circuit 960, a wifi module 970, a processor 980 (which may be the control circuit board 20 in the above-described embodiment), a power supply 990, and the like. Wherein the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected with the processor 980; power supply 990 is operable to provide power to the entire electronic device 10.

Specifically, the RF circuit 910 is used for transmitting and receiving signals; the memory 920 is used for storing data instruction information; the input unit 930 is used for inputting information, and may specifically include a touch panel 931 and other input devices 932 such as operation keys; the display unit 940 may include a display panel 941; the sensor 950 includes an infrared sensor, a laser sensor, etc. for detecting a user approach signal, a distance signal, etc.; a speaker 961 and a microphone 962 are connected to the processor 980 through the audio circuit 960 for emitting and receiving sound signals; the wifi module 970 is used for receiving and transmitting wifi signals, and the processor 980 is used for processing data information of the electronic device. For specific structural features of the electronic device, please refer to the related description of the above embodiments, and detailed descriptions thereof will not be provided herein.

In the electronic device in this embodiment, the casing of the electronic device realizes two or more color appearance effects on the same film substrate by means of coating, local shielding, local film removing, and re-coating. The preparation method of the diaphragm provided by the embodiment of the application can realize seamless splicing of two or more colors visually on the same diaphragm, meets the reliability of the test, enriches the appearance effect of the shell (lens), avoids the problem of black line shielding of double-lamination diaphragms and greatly improves the appearance expressive force of products.

The above description is only a part of the embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes performed by the present invention through the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A method for preparing a membrane, the method comprising:

plating a first color film layer on the surface of a base material;

removing the first color film layer in the exposed area;

and plating a second color film layer in the exposed area.

2. The method according to claim 1, further comprising, before the step of plating the first color film layer on the surface of the substrate: forming a UV texture layer on the surface of the base material; wherein, the first color film layer is plated on the UV texture layer.

3. The preparation method of claim 1, wherein the step of partially shielding the first color film layer is specifically to form a shielding ink layer by silk-screen printing on a local area of the first color film layer.

4. The method according to claim 1, wherein the step of plating the second color film layer in the exposed region is performed by plating the second color film layer in the shielded region and the exposed region simultaneously.

5. The method according to claim 4, further comprising, after the step of plating the second color film layer on the masked region and the exposed region: and forming a bottom covering ink layer on the second color film layer.

6. The membrane is characterized by comprising a base material, wherein a first color membrane layer and a second color membrane layer which are adjacently arranged are arranged on the surface of the base material, and a shielding ink layer is arranged on the first color membrane layer.

7. The film of claim 6 further comprising a UV texture layer disposed between the first color film layer and the substrate and between the second color film layer and the substrate.

8. A membrane is characterized by comprising a base material, wherein a first appearance area and a second appearance area are adjacently arranged on one side surface of the base material; the first appearance area is sequentially stacked with a first color film layer, a shielding ink layer and a second color film layer, and the second appearance area is provided with a second color film layer.

9. A case for an electronic device, comprising a transparent substrate and a film obtained by the production method according to any one of claims 1 to 5; and the transparent substrate is attached to the surface of the membrane base material, which is away from the first color membrane layer.

10. An electronic device, comprising a display screen, a control circuit board and the housing of claim 9, wherein the housing and the display screen are matched to form an accommodating space, and the control circuit board is disposed in the accommodating space and electrically connected to the display screen.