CN113480890A

CN113480890A - Silk-screen printing ink and preparation method thereof, shell and manufacturing method thereof, and electronic equipment

Info

Publication number: CN113480890A
Application number: CN202110763823.XA
Authority: CN
Inventors: 耿岩
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-10-08

Abstract

The application discloses silk-screen printing ink and a preparation method thereof, a shell and a manufacturing method thereof, and electronic equipment, wherein the silk-screen printing ink comprises: polyacrylic resins and polymeric coupling agents composed of a plurality of mixtures; the polymer coupling agent is crosslinked with polyacrylic resin and is used for preventing the silk-screen printing ink from being corroded; the plurality of mixtures at least comprise different first polymer coupling agents and second polymer coupling agents. Through the mode, the application can be crosslinked with polyacrylic resin through the high-molecular coupling agent, and the polyacrylic resin is wrapped by the high-molecular coupling agent, so that the silk-screen printing ink is protected, and the silk-screen printing ink is prevented from being corroded.

Description

Silk-screen printing ink and preparation method thereof, shell and manufacturing method thereof, and electronic equipment

Technical Field

The application relates to the technical field of coatings, in particular to silk-screen printing ink and a preparation method thereof, a shell and a manufacturing method thereof, and electronic equipment.

Background

The smart phone is rapidly developed to the present, a middle frame and front and rear cover structure is increasingly used, and the appearance personality difference of the whole smart phone is more reflected on a battery cover (rear cover). The composite plate is widely applied to the mobile phone battery cover due to the advantages of price and performance. "Logo" is an image feature of a brand, and the color and appearance delicacy of the Logo are undoubtedly of great importance to the brand.

Generally, a silver color "Logo" is printed on glass, ceramic and composite board materials, because the printed "Logo" is made of ink, the ink contains organic solvent, and when the "Logo" is to be fixed, the "Logo" is usually fixed by using an optical transparent adhesive, however, under the energy of Ultraviolet (UV) light, the optical transparent adhesive is easy to swell with the organic solvent of the ink, so that the edge of the "Logo" is corroded, and even the whole "Logo" is deformed or lost.

Disclosure of Invention

A first aspect of an embodiment of the present application provides a screen printing ink, including: polyacrylic resins and polymeric coupling agents composed of a plurality of mixtures; the polymer coupling agent is crosslinked with polyacrylic resin and is used for preventing the silk-screen printing ink from being corroded; the plurality of mixtures at least comprise different first polymer coupling agents and second polymer coupling agents.

A second aspect of the embodiments of the present application provides a method for preparing a silk-screen printing ink, where the method includes: blending preset components according to a preset proportion to obtain the silk-screen printing ink with preset viscosity and preset color according to the first aspect of the embodiment of the application; and sequentially adding a diluent and a curing agent into the screen printing ink and mixing to enable the screen printing ink to be blended into a printable state.

A third aspect of embodiments of the present application provides a manufacturing method of a housing, the manufacturing method including: silk-screen printing ink which is prepared according to the second aspect of the embodiment of the application and can be printed in a printable state is printed on a substrate in a silk-screen mode; placing the silk-screen substrate into an oven, and baking the substrate for a preset time according to a preset temperature; and carrying out texture impression on the baked substrate or coating liquid crystal and then carrying out texture impression on the substrate to form the corrosion-resistant preset mark.

A fourth aspect of embodiments of the present application provides a housing, including: a texture layer, a liquid crystal system layer on the texture layer, and a substrate on the liquid crystal system layer; the liquid crystal system layer at least comprises a preset mark and a bonding glue layer for bonding the preset mark and the texture layer, and the thickness range of the texture layer is 8-12 um; wherein, be equipped with the silk screen printing ink like the first aspect of this application embodiment between laminating glue film and the predetermined mark to prevent to predetermine on the casing that the mark is corroded.

A fifth aspect of embodiments of the present application provides another housing, including: the inner side film pasting piece, the preset mark based on the inner side film pasting piece and the substrate based on the preset mark; a first texture layer is arranged between the preset mark and the inner side pasting film;

the silk-screen printing ink of the first aspect of the embodiment of the application is included between the first texture layer and the preset mark to prevent the preset mark from being corroded.

A sixth aspect of embodiments of the present application provides an electronic device including at least the case provided by the fourth or fifth aspect of embodiments of the present application.

The beneficial effect of this application is: the high-molecular coupling agent is crosslinked with the polyacrylic resin, and the polyacrylic resin is wrapped by the high-molecular coupling agent, so that the silk-screen printing ink is protected, the silk-screen printing ink is prevented from being corroded, the silk-screen printing ink is used for protecting the printed preset mark, and the preset mark is prevented from being deformed or lost.

Drawings

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

Fig. 1 is an appearance schematic diagram of a battery cover using silver Logo for screen printing ink of the present application, including fig. 1(1), fig. 1(2), and fig. 1 (3);

FIG. 2 is a schematic diagram showing the appearance of a battery cover using black Logo for screen printing ink of the present application;

fig. 3 is an appearance schematic diagram of a battery cover of a screen printing ink etching Logo or a physical vapor deposition Logo according to the present application, including fig. 3(1) and fig. 3 (2);

fig. 4 is a schematic diagram of a corresponding laminated structure of a housing printed with Logo according to the related art and a schematic diagram of deformation or loss of Logo, wherein fig. 4(1) is a schematic diagram of a corresponding laminated structure of a housing printed with Logo according to the related art, and fig. 4(2) is a schematic diagram of deformation or loss of Logo;

FIG. 5 is a schematic diagram of a manufacturing flow process for manufacturing a housing using screen printing ink according to the present application;

FIG. 6 is a schematic view of a first stacked structure corresponding to a housing made of silk-screen printing ink according to the first embodiment of the present application;

FIG. 7 is a schematic diagram of a second stacked structure corresponding to the housing made of silk-screen printing ink according to the first embodiment of the present application;

FIG. 8 is a schematic view of a first stacked structure corresponding to a housing made of silk-screen printing ink according to a second embodiment of the present application;

FIG. 9 is a schematic diagram of a second stacked structure corresponding to a housing made of silk-screen printing ink according to a second embodiment of the present application;

fig. 10 is a schematic block diagram of a hardware architecture of an electronic device corresponding to a housing manufactured by using silk-screen printing ink according to the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

The smart phone is rapidly developed to the present, a middle frame and front and rear cover structure is increasingly used, and the appearance personality difference of the whole smart phone is more reflected on a battery cover (rear cover). Polycarbonate (PC) or Polymethyl methacrylate (PMMA) can be used to form a composite plate, and the PC/PMMA composite plate is widely used in a mobile phone battery cover due to its price and performance advantages. "Logo" is an image feature of a brand, and the color and appearance delicacy of the Logo are undoubtedly of great importance to the brand. In the current market, the matching of Logo color and battery cover and the corresponding defects are mainly as follows:

1) the silver Logo printing method can be widely applied to materials of glass, ceramics and composite boards, please refer to fig. 1, fig. 1 is a schematic diagram of the appearance of a battery cover using the silver Logo printing ink in fig. 1, and the method comprises the steps of fig. 1(1), fig. 1(2) and fig. 1 (3); at present, only one composite board battery cover Logo is printed on the market, the color is single, aesthetic fatigue is easily caused, and on a high-brightness plated film battery cover, the silver Logo is under the contrast of high-brightness appearance, so that the contrast is not obvious, and the battery cover looks dull and dull.

2) Printing black Logo can be realized on a glass battery cover or a ceramic battery cover, such as I am plus 9 and 9Pro series, and printing black Logo on the inner side of glass. Referring to fig. 2, fig. 2 is a schematic diagram of an appearance of a battery cover using black Logo for silk-screen printing ink according to the present application; however, when the black ink is applied to the composite board, due to the limitation of the ink system and the laminated structure of the composite board, under the action of Ultraviolet (UV) energy in the process of imprinting the glue, the ink and the glue swell to cause Logo performance failure.

3) Etching Logo or Physical Vapor Deposition (PVD) Logo can be implemented on glass or ceramic, please refer to fig. 3, fig. 3 is a schematic diagram of an appearance of a battery cover of the screen printing ink etching Logo or PVD Logo of the present application, including fig. 3(1) and fig. 3(2), for example, my si plus 9R uses a glass etching process, and a glass battery cover of an apple mobile phone mostly uses PVD Logo. However, the method is often used in high-end models due to high cost and limited material properties. Meanwhile, the etching process is not suitable for the material of the composite plate; the PVD temperature is higher, the composite plate is easy to soften and deform at the high temperature of the PVD, and the subsequent processing is affected, so that the PVD process is not suitable for the composite plate battery cover.

Referring to fig. 4, fig. 4 is a schematic diagram of a stack structure corresponding to a housing printed with Logo in the related art and a schematic diagram of deformation or loss of the Logo, where fig. 4(1) is a schematic diagram of a stack structure corresponding to a housing printed with Logo in the related art, and fig. 4(2) is a schematic diagram of deformation or loss of the Logo. As can be seen from fig. 4, the strengthening layer 1, the PC/PMMA composite board 2, the printed Logo31, the UV texture 3, the plated film 4, and the ink cover bottom 5 are sequentially laminated, and the composite board battery cover has a laminated structure in which the Logo is printed on the composite board 2, and then the texture is imprinted on the Logo31 and the composite board 2. In the high-brightness coated battery cover, the sawtooth effect at the overlapped part of the texture and the Logo edge is obvious, the appearance fineness effect is influenced, the black ink has large limitation, and the black ink can be realized on the cover bottom made of materials such as glass, ceramics and the like, but when the black ink is printed on the composite plate battery cover, resin in the ink and organic components in texture glue are mutually dissolved under the action of UV energy, so that the edge corrosion is caused; in a coating system containing liquid crystal, as glue for liquid crystal bonding contains a Dmaa monomer with stronger corrosiveness, Logo even deforms or is lost in a whole piece.

On this basis, this application provides a novel silk screen printing ink, and in order to explain the technical scheme of this application, explain this application first aspect provides a silk screen printing ink below through concrete embodiment, and this silk screen printing ink includes: polyacrylic resins and polymeric coupling agents composed of a plurality of mixtures; the polymer coupling agent is crosslinked with polyacrylic resin and is used for preventing the silk-screen printing ink from being corroded; the plurality of mixtures at least comprise different first polymer coupling agents and second polymer coupling agents.

Therefore, the high-molecular coupling agent is crosslinked with the polyacrylic resin, and the polyacrylic resin is wrapped by the high-molecular coupling agent, so that the silk-screen printing ink is protected, the silk-screen printing ink is prevented from being corroded, the silk-screen printing ink is used for protecting the printed preset mark, and the preset mark is prevented from being deformed or lost.

Further, the silk-screen printing ink also comprises carbon black, ethylene glycol mono (mono) butyl ether and modified acrylic acid; wherein the content of carbon black is 0-15%, the content of ethylene glycol mono (mono) butyl ether is 0-45%, and the content of modified acrylic acid is 0-10%.

Specifically, the following table 1 can be checked for the proportion of the screen printing ink:

table 1 distribution ratio table for components of screen printing ink

Name of composition	Content of	CAS NO.
			Carbon black	15％	1333-86-4
Polyacrylic acid resin	25％	25035-69-2
			Ethylene glycol mono (mono) butyl ether	45％	111-76-2
Polymer coupling agent 1	2％	2768-02-7
			Polymer coupling agent 2	3％	18171-19-2
Modified acrylic acid	10％	79-10-7

The CAS Number (CAS Registry Number or CAS Number, CAS Rn, CAS #) is a unique Number identification Number of a certain substance (compound, polymer material, Biological sequence, mixture or alloy).

The lower histochemical Abstract Service society of the American Chemical society (CAS) is responsible for assigning a CAS number to each substance appearing in the literature for the purpose of facilitating database retrieval in order to avoid the trouble of multiple names of chemicals, and almost all Chemical databases today allow retrieval with CAS numbers.

Therefore, the printing ink is used on the Logo of the composite plate battery cover, more choices are provided for the color of the Logo of the composite plate battery cover, the problem that common black printing ink and glue are mutually dissolved is solved by the novel mirror surface black printing ink, meanwhile, the saw tooth effect between the black Logo and the texture is better than that of silver printing ink, the appearance effect of a shell product is improved, and the differentiated competitiveness of the product is improved.

A second aspect of the embodiments of the present application provides a method for preparing a silk-screen printing ink, where the method includes:

blending preset components into preset viscosity and preset color according to a preset proportion, wherein the preset viscosity and the preset color are the same as those of the silk-screen printing ink of the first aspect: specifically, please refer to table 1 for ink preparation: mixing the components into ink according to a proportion, and controlling viscosity, color depth and the like;

and then, sequentially adding a diluent and a curing agent into the screen printing ink and mixing to enable the screen printing ink to be blended into a printable state, and specifically, mixing the ink, the diluent and the curing agent according to requirements to be blended into a printable state.

A third aspect of the embodiments of the present application provides a method for manufacturing a housing, please refer to fig. 5, where fig. 5 is a schematic diagram of a manufacturing flow process for manufacturing a housing by using silk-screen printing ink, and the method includes the following specific steps:

s1: silk-screen printing ink in a printable state is printed on a substrate in a silk-screen manner;

firstly, when the housing is manufactured, a substrate may be provided, and the substrate is used for receiving silk-screen printing ink, specifically, the substrate may be a composite board, and the composite board at least includes a PC board or PMMA.

The screen printing ink which is prepared according to the second aspect of the embodiment of the present application and can be printed in a printable state is printed on the substrate, in order to improve the firmness of the screen printing ink, the parameters and the control indexes of the screen printing ink need to be controlled, and the main components and the adopted control indexes are shown in table 1.

S2: placing the silk-screened substrate into an oven;

because silk screen printing ink is fluid state, the silk screen printing back on the base plate, for avoiding leading to the fact the confusion after contacting with other membrane, can stand a period of time usually, the base plate after the needs silk screen printing dries, but at present because the composition that silk screen printing ink contains, it is longer to dry the time that needs naturally.

For can dry silk screen printing ink faster, the base plate after this application will be silk screen printed puts into the oven, adopts the mode of toasting to bake the base plate after the silk screen printing, can practice thrift the time that the base plate after the silk screen printing dries by a wide margin.

S3: baking the substrate according to a preset temperature and a preset time;

generally, in the process of baking the substrate, a preset temperature and a preset time are set for controlling the baking specification of the substrate, so that a qualified shell product can be obtained under the specified requirement.

Specifically, the silk-screen substrate may be placed in an oven and baked at a temperature of 80 ℃ for one hour, or may be baked at a temperature of 85 ℃ for 55 minutes, and of course, other preset temperatures and preset times may be set by those skilled in the art, which is not limited herein.

S4: and carrying out texture impression on the baked substrate or coating liquid crystal and then carrying out texture impression on the substrate so as to form a corrosion-resistant preset mark on the shell.

Because the silk-screen printing ink wraps the preset mark and the polymer coupling agent is arranged in the silk-screen printing ink and can be used for protecting the preset mark, the anti-corrosion preset mark can be formed on the shell,

in order to improve the appearance of the shell, the baked substrate can be subjected to texture imprinting, and the baked substrate can be coated with liquid crystal and then subjected to texture imprinting, so that a corrosion-resistant preset mark is formed on the shell. And after the completion, checking whether the Logo appearance is corroded by the glue, and swelling, thereby judging the corrosion resistance of the silk-screen printing ink.

Specifically, the adhesive 22 in the liquid crystal system layer 2 is directly contacted with Logo printing ink and a plate, and the thickness is 11-15 um; the liquid crystal layer 23 is arranged between the adhesive 22 and the UV texture 1 (containing OCA water adhesive 23) and has the thickness of 2-3 um; wherein the OCA water gel 23 is very thin, less than 100nm, dissolves into the UV texture layer after embossing the texture and is substantially invisible.

The UV texture layer uses glue with thickness of 8-12 μm, and a specific pattern or texture is transferred to the UV glue through an imprinting mold.

Further, the manufacturing method of the housing further includes: arranging the electroplated layer or the liquid crystal layer and the electroplated layer on the shell to brighten or change the color of the preset mark; or after the electroplated layer is arranged on the diaphragm, the diaphragm is attached to the substrate so as to brighten or change the color of the preset mark; or electroplating the substrate, and then attaching the membrane to the substrate to brighten or change the color of the preset mark.

A fourth aspect of the present application provides a housing, please refer to fig. 6, where fig. 6 is a schematic view illustrating a first stacked structure corresponding to the housing manufactured by using silk-screen printing ink according to the first embodiment of the present application, and the housing includes: a texture layer 1, a liquid crystal system layer 2 on the texture layer 1, and a substrate 3 on the liquid crystal system layer 2;

the liquid crystal system layer 2 at least comprises a preset mark 21 and a bonding glue layer 22 for bonding the preset mark 21 and the texture layer 1, and the thickness range of the texture layer 1 is 8-12 um; the silk-screen printing ink of the first aspect of the embodiment of the present application is provided between the adhesive layer 22 and the preset mark 21 to prevent the preset mark 21 from being corroded.

Further, referring to fig. 7, fig. 7 is a schematic view of a second stacked-layer structure of a housing manufactured by using silk-screen printing ink according to the first embodiment of the present disclosure, in which the liquid crystal system layer 2 further includes a liquid crystal layer 23 on the adhesive layer 22 and an optical adhesive layer 24 on the liquid crystal layer 23, the liquid crystal layer 23 has a thickness of 2-3um, the adhesive layer 22 has a thickness of 11-15um, and the optical adhesive layer 24 has a thickness of 100 nm;

in addition, the shell also comprises a strengthening layer 4, an electroplated layer 5 and an ink cover bottom layer 6;

the reinforcing layer 4 is arranged on the substrate 3, the substrate 3 is a composite board or an injection molding board, the composite board can be a PC/PMMA composite board, the thickness of the substrate 3 is 0.50mm, the substrate can also be an injection molding PC board, and the thickness range of the reinforcing layer 4 is 3-8 um;

the electroplated layer 5 is arranged on the texture layer far away from the liquid crystal system layer 2, the electroplated layer 5 is a magnetic control plated film or an electron gun plated film, the thickness range of the magnetic control plated film is 35-60nm, and the thickness range of the electron gun plated film is 250-450 nm; specifically, a plating film layer with high reflectivity is arranged below the UV texture layer 1, and the plating layer 5 can be an indium tin plating layer for better reflecting light so as to set the pattern or texture of the UV texture layer 1 off, and is plated by using a magnetron sputtering mode; or a thick coating layer with high color superposition effect, wherein the coating layer is formed by multiply superposing TiO2 and SiO2 and is electroplated by using an electron gun.

The ink cover bottom layer 6 is arranged on the electroplated layer 5 far away from the texture layer 1, and the thickness range of the ink cover bottom layer 6 is 35-55um, so that the electroplated layer 5 can be protected.

Therefore, the mirror black Logo is printed on the inner side of the battery cover in a silk-screen mode, the thickness of the mirror black Logo is 2-3 mu m, the printing ink contains resin gloss oil, and a high-molecular coupling agent is added into polyacrylic resin, so that the polyacrylic resin contains high crosslinking density, and the swelling and dissolution of the Dmaa monomer in the glue to the printing ink can be resisted during UV treatment, so that the printing ink is prevented from being corroded. And the front surface of the composite board is a coating strengthening layer with the thickness of 3-8 microns, and is used for protecting the appearance surface, reducing the risk of scratching and playing a role in AF protection.

Therefore, by developing the black ink with high corrosion resistance and applying the black ink to the composite plate battery cover, Logo colors can be selected more, the sawtooth defects generated by the texture of the silver Logo under a high-brightness system (UV energy) are reduced, and the appearance expressive force and the competitiveness of products are improved.

And the black Logo has appearance advantage under the highlight coating, and is more obvious in contrast under the effect that the coating color is white, so that the phenomenon that the Logo is not clear due to the fact that the silver Logo is close to the plate color is avoided.

Referring to fig. 8, fig. 8 is a schematic view of a first stacked structure corresponding to a housing manufactured by using screen printing ink according to a second embodiment of the present disclosure, where the housing includes: the adhesive tape comprises an inner side adhesive film sheet 1, a preset mark 2 based on the inner side adhesive film sheet 1 and a substrate 3 based on the preset mark 2;

a first texture layer 21 is arranged between the preset mark 2 and the inner side film pasting piece 1, wherein the thickness range of the first texture layer 21 is 8-12 um;

the first texture layer 21 and the predetermined mark 2 include the silk-screen ink provided in the first aspect of the embodiment of the present application therebetween, so as to prevent the predetermined mark 2 from being corroded.

Further, referring to fig. 9, fig. 9 is a schematic diagram of a second stacked structure corresponding to a housing manufactured by using silk-screen printing ink according to a second embodiment of the present application, where the housing further includes a strengthening layer 4 on the substrate 3, a first electroplated layer 5 disposed between the first texture layer 21 and the inner lamination film 1, and a varnish layer 6 on the electroplated layer 5, and the varnish layer 6 is used to protect the first electroplated layer 5;

the inner side film 2 at least comprises an optical adhesive layer 11, an explosion-proof film layer 12, a second texture layer 13, a second electroplated layer 14 and an ink cover bottom layer 15 which are sequentially stacked;

the thickness range of the strengthening layer 4 is 3-8um, the thickness range of the preset mark 2 is 2-3um, the thickness range of the first electroplated layer 5 is 80-450nm, the thickness range of the gloss oil layer 6 is 15-20nm, the thickness range of the second texture layer 13 is 8-12um, the thickness range of the second electroplated layer 14 is 30-220nm, and the thickness range of the ink cover bottom layer 15 is 35-55 um.

The base material 3 is printed with black Logo, texture and a plating layer 5, the plating layer 5 can be an anti-reflection film of magnetron sputtering or a thickness film using an electron gun, and a gloss oil layer 6 is printed after plating for protecting the plating layer and preventing the plating layer 5 from being oxidized or damaged. The film is provided with a texture layer and an electroplated indium tin brightening layer, the film and the plate are adhered together through OCA glue, and the film and the plate form a double-texture double-plating effect and richer colors. The black Logo printed on the board and the double-line double plating are superposed and combined to achieve the desired effect.

A sixth aspect of embodiments of the present application provides an electronic device including at least a housing as provided in the fourth or fifth aspect of embodiments of the present application. Referring to fig. 10, fig. 10 is a schematic block diagram of a hardware architecture of an electronic device corresponding to a housing manufactured by using silk-screen printing ink according to the present application, where the electronic device 700 may be an industrial computer, a tablet computer, a mobile phone, a notebook computer, and the like, and the mobile phone is taken as an example in the embodiment.

The electronic device 700 may include a Radio Frequency (RF) circuit 710, a memory 720, an input unit 730, a display unit 740, a sensor 750, an audio circuit 760, a wifi (wireless fidelity) module 770, a processor 780, a power supply 790, and the like. The RF circuit 710, the memory 720, the input unit 730, the display unit 740, the sensor 750, the audio circuit 760 and the WiFi module 770 are respectively connected to the processor 780; the power supply 790 is used to supply power to the entire electronic device 700.

Specifically, the RF circuit 710 is used for transmitting and receiving signals; the memory 720 is used for storing data instruction information; the input unit 730 is used for inputting information, and may specifically include a touch panel 731 and other input devices 732 such as operation keys; the display unit 740 may include a display panel; the sensor 750 includes an infrared sensor, a laser sensor, etc. for detecting a user approach signal, a distance signal, etc.; a speaker 761 and a microphone (or microphone) 762 are connected to the processor 780 through the audio circuit 760 for emitting and receiving sound signals; the WiFi module 770 is used for receiving and transmitting WiFi signals, and the processor 780 is used for processing data information of the handset.

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

Claims

1. A screen printing ink, comprising:

polyacrylic resins and polymeric coupling agents composed of a plurality of mixtures;

the polymer coupling agent is crosslinked with the polyacrylic resin and is used for preventing the silk-screen printing ink from being corroded;

wherein the plurality of mixtures at least comprise different first polymer coupling agents and second polymer coupling agents.

2. The screen printing ink of claim 1,

the silk-screen printing ink also comprises carbon black, ethylene glycol mono (mono) butyl ether and modified acrylic acid;

wherein the content of the carbon black is 0-15%, the content of the ethylene glycol mono (mono) butyl ether is 0-45%, and the content of the modified acrylic acid is 0-10%.

3. A preparation method of screen printing ink is characterized by comprising the following steps:

preparing a silk-screen printing ink with preset viscosity and preset color by mixing preset components according to the preset proportion in claim 1 and/or claim 2;

and sequentially adding a diluent and a curing agent into the silk-screen printing ink and mixing to enable the silk-screen printing ink to be blended into a printable state.

4. A method of manufacturing a housing, the method comprising:

screen printing the screen printing ink in a printable state as claimed in claim 3 on a substrate;

placing the silk-screen substrate into an oven, and baking the substrate according to a preset temperature for a preset time;

and carrying out texture impression on the baked substrate or coating liquid crystal and then carrying out texture impression on the substrate so as to form a corrosion-resistant preset mark on the shell.

5. The manufacturing method according to claim 4, characterized by further comprising:

arranging an electroplated layer or a liquid crystal layer and the electroplated layer on the shell so as to brighten or change the color of the preset mark; or

After the electroplated layer is arranged on the diaphragm, the diaphragm is attached to the substrate so as to brighten or change the color of the preset mark; or

Electroplating the substrate, and attaching the membrane to the substrate to brighten or change the color of the preset mark.

6. A housing, characterized in that the housing comprises:

the liquid crystal display device comprises a texture layer, a liquid crystal system layer based on the texture layer, and a substrate based on the liquid crystal system layer;

the liquid crystal system layer at least comprises a preset mark and a bonding glue layer which is bonded with the preset mark and the texture layer, and the thickness range of the texture layer is 8-12 um;

the silk-screen printing ink as claimed in claim 1 and/or claim 2 is arranged between the adhesive layer and the preset mark to prevent the preset mark from being corroded.

7. The housing of claim 6,

the liquid crystal system layer further comprises a liquid crystal layer based on the bonding adhesive layer and an optical adhesive layer based on the liquid crystal layer, wherein the thickness range of the liquid crystal layer is 2-3um, and the thickness range of the bonding adhesive layer is 11-15 um;

the shell also comprises a strengthening layer, an electroplated layer and an ink cover bottom layer;

the reinforcing layer is arranged on the substrate, the substrate is a composite board or an injection molding plate, and the thickness range of the reinforcing layer is 3-8 um;

the electroplated layer is arranged on the texture layer far away from the liquid crystal system layer, and is a magnetic control plated film or an electron gun plated film, the thickness range of the magnetic control plated film is 35-60nm, and the thickness range of the electron gun plated film is 250-450 nm;

the ink cover bottom layer is arranged on the electroplated layer far away from the texture layer, and the thickness range of the ink cover bottom layer is 35-55 um.

8. A shell is characterized in that a shell body is provided,

the inner side pasting film is based on a preset mark on the inner side pasting film, and the substrate is based on the preset mark;

a first texture layer is arranged between the preset mark and the inner side film pasting piece;

wherein the silk-screen ink of claim 1 and/or claim 2 is included between the first texture layer and the predetermined mark to prevent the predetermined mark from being corroded.

9. The housing of claim 8,

the shell further comprises a strengthening layer based on a substrate, a first electroplated layer arranged between the first texture layer and the inner side lamination piece and a gloss oil layer based on the electroplated layer, wherein the gloss oil layer is used for protecting the first electroplated layer;

the inner side film pasting sheet at least comprises an optical adhesive layer, an explosion-proof film layer, a second texture layer, a second electroplated layer and an ink cover bottom layer which are sequentially stacked;

wherein, the thickness range of strengthening layer is 3-8um, the thickness range of predetermineeing the sign is 2-3um, the thickness range of first electroplated layer is 80-450nm, the thickness range of gloss oil layer is 15-20nm, the thickness range of second texture layer is 8-12um, the thickness range of second electroplated layer is 30-220nm, the thickness range of ink bottom of the cap layer is 35-55 um.

10. An electronic device, characterized in that the electronic device comprises a housing according to any one of claims 6 to 9.