Ink, method of preparing the same, camera decoration assembly, housing, and electronic device

Abstract

The application relates to the technical field of electronic equipment, in particular to an ink, a preparation method thereof, a camera decoration assembly, a shell and an electronic equipment. The ink comprises a main agent, a pigment filler, a diluent and a curing agent; the main agent comprises a main body resin, and the main body resin comprises the following components in parts by mass: 60-80 parts of methyl methacrylate; 1-3 parts of bisphenol A diglycidyl ether; and 6-10 parts of dimethyl glutarate. The above ink can solve the problem that ultraviolet light cannot penetrate the shielding layer to cure the ultraviolet curing glue.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to an ink and its preparation method, a camera decorative component, a housing, and an electronic device. Background Technology

[0002] To meet users' daily photography needs, electronic devices are generally equipped with camera modules. In order to protect the camera modules, electronic devices are also equipped with camera decorative components, which are usually directly observed by users.

[0003] Camera decorative components typically consist of lenses and decorative parts. In general, UV-cured adhesive is applied to the decorative part and cured using UV light transmitted through the lens, forming an adhesive bond that connects the lens and decorative part. However, because lenses are translucent, after bonding the lens and decorative part using this method, the user can see the adhesive bond through the lens from the outside of the electronic device, affecting the appearance of the camera decorative component. While a shielding layer with low visible light transmittance on the lens can conceal the adhesive bond, traditional shielding layers also have low UV transmittance, meaning UV light cannot penetrate the shielding layer to cure the UV-cured adhesive. Summary of the Invention

[0004] Based on this, this application provides an ink and its preparation method, a camera decorative component, a housing, and an electronic device, with the aim of solving the problem that ultraviolet light cannot penetrate the shielding layer to cure ultraviolet light-curing adhesive.

[0005] The first aspect of this application provides an ink, the technical solution of which is as follows:

[0006] An ink comprising a base agent, pigments and fillers, a diluent, and a curing agent;

[0007] The main agent includes a main resin, and the main resin comprises the following components in parts by weight:

[0008] 60-80 parts of methyl methacrylate;

[0009] 1-3 parts of bisphenol A diglycidyl ether;

[0010] 6-10 parts of dimethyl glutarate.

[0011] The second aspect of this application provides a method for preparing ink, the technical solution of which is as follows:

[0012] A method for preparing an ink includes the following steps:

[0013] Methyl methacrylate, bisphenol A diglycidyl ether, and dimethyl glutarate were mixed to obtain the main resin, and the main agent was prepared.

[0014] Component A is prepared by mixing the main agent, pigments, fillers, and a portion of diluent;

[0015] Mix the curing agent and another portion of the diluent to prepare component B.

[0016] A third aspect of this application provides a camera decorative component, the technical solution of which is as follows:

[0017] A camera decorative component, comprising:

[0018] A lens, the lens comprising a lens body and an ink layer, the lens body having an outer peripheral surface, the ink layer covering the outer peripheral surface, the ink layer being formed by curing ink as described above;

[0019] Decorative elements surrounding the lens; and

[0020] An ultraviolet-curable adhesive layer is located between the lens and the decorative element, connecting the lens and the decorative element, and is shielded by the ink layer.

[0021] The fourth aspect of this application provides a housing, the technical solution of which is as follows:

[0022] A housing, comprising

[0023] The shell body; and

[0024] The camera decorative component as described above is disposed on the housing body.

[0025] The fifth aspect of this application provides an electronic device, the technical solution of which is as follows:

[0026] An electronic device, comprising:

[0027] Camera module;

[0028] The housing described above is disposed on the object side of the camera module, and the camera decorative assembly is correspondingly disposed with respect to the camera module; and

[0029] A circuit board assembly, which is electrically connected to the camera module, is used to control the camera module to take pictures.

[0030] This application has the following beneficial effects:

[0031] This application, through the design of ink composition, especially the design of the ink's main resin, provides an ink layer with low visible light transmittance after curing. This effectively shields the adhesive layer while allowing ultraviolet light to pass through, thus curing the UV-curable adhesive and forming the adhesive layer. Applying this ink to the connection between lenses and decorative parts provides a superior decorative effect for camera decorative components. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application and to more completely understand this application and its beneficial effects, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a partial structural schematic diagram of a camera decorative assembly according to one embodiment;

[0034] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of section A-A';

[0035] Figure 3 for Figure 1 A top-view structural diagram of the lens in the image;

[0036] Figure 4 for Figure 1 A schematic diagram of the frontal structure of the lens in the image;

[0037] Figure 5 This is a schematic diagram of a solution in which the lens body is fixed to the rotating suction head;

[0038] Figure 6 This is a schematic diagram illustrating one embodiment of ink coating using a spin coater;

[0039] Figure 7 This is a real-world illustration of a lens according to one embodiment. Detailed Implementation

[0040] The present application will be further described in detail below with reference to specific embodiments. The present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0042] the term

[0043] Unless otherwise stated or in case of conflict, the terms or phrases used in this application shall have the following meanings:

[0044] In this application, the terms "optionally," "optionally," and "optional" refer to options that are optional, meaning they can be selected from either "with" or "without." If multiple "optional" options appear in a technical solution, unless otherwise specified and there are no contradictions or mutual constraints, each "optional" option is independent.

[0045] In this application, the terms "first aspect," "second aspect," "third aspect," and "fourth aspect," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity, nor should they be construed as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first," "second," "third," and "fourth," etc., serve only a non-exhaustive enumeration purpose and should be understood not to constitute a closed limitation on quantity.

[0046] In this application, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] In this application, when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. It should also be understood that, in interpreting the connection or positional relationship of elements, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art.

[0048] Camera decorative components typically consist of lenses and decorative parts. In general, UV-curable adhesive is applied to the decorative part and cured using UV light transmitted through the lens, forming a bonded area that connects the lens and decorative part. However, because lenses are translucent, after bonding the lens and decorative part using this method, the bonded area is visible to the user from the outside of the electronic device, affecting the appearance of the camera decorative component. While a shielding layer with low visible light transmittance on the lens can conceal the bonded area, traditional shielding layers also have low UV transmittance, preventing UV light from penetrating the shielding layer to cure the UV-curable adhesive.

[0049] The first aspect of this application provides an ink, in some embodiments of which the ink includes a main agent, pigments and fillers, a diluent and a curing agent;

[0050] The main agent includes the main resin, which comprises the following components in parts by weight:

[0051] 60-80 parts of methyl methacrylate;

[0052] 1-3 parts of bisphenol A diglycidyl ether;

[0053] 6-10 parts of dimethyl glutarate.

[0054] The above-described embodiments, through the design of the ink composition, especially the design of the ink's main resin, provide an ink layer with low visible light transmittance after curing. This effectively shields the adhesive layer while allowing ultraviolet light to pass through, thus curing the UV-curable adhesive and forming the adhesive layer. Applying the ink from the above embodiments to the connection between lenses and decorative parts provides a good decorative effect for camera decorative components.

[0055] The ink described in the above embodiments is a semi-transparent ink. After curing, the resulting ink layer achieves a transmittance of <3% for visible light at 550nm and a transmittance of >20% for ultraviolet light at 365nm. This allows for both the thorough curing of the UV-curable adhesive to form an adhesive layer and the shielding of the adhesive layer. In some embodiments, the ink layer, with a thickness of 4μm to 8μm, exhibits a transmittance of 9% to 18% for visible light at 550nm and a transmittance of 6% to 15% for ultraviolet light at 365nm.

[0056] UV-curable adhesives, also known as photosensitive adhesives or shadowless adhesives, are a type of adhesive that requires ultraviolet light to cure. They can be used as adhesives or as binders in paints, coatings, and inks. Ultraviolet (UV) light is invisible to the naked eye and is a segment of electromagnetic radiation beyond visible light, with wavelengths ranging from 10nm to 400nm. Commonly used UV-curable adhesive systems are unsaturated polyester systems. These adhesives have good fluidity and shrink from a liquid to a solid state after UV curing, sometimes exhibiting porous structures. Users can observe noticeable color differences through lenses on the outside of electronic devices, leading to low yield and increased industrial costs. By using an ink layer to mask the adhesive and the layer, these porous and discolored issues can be avoided, resulting in a high yield.

[0057] The mass fractions of methyl methacrylate include, but are not limited to, 60, 65, 70, 75, and 80 parts. The mass fractions of bisphenol A diglycidyl ether include, but are not limited to, 1, 1.5, 2, 2.5, and 3 parts. The mass fractions of dimethyl glutarate include, but are not limited to, 6, 7, 8, 9, and 10 parts.

[0058] The aforementioned main resin is a polymer matrix that can form a grid skeleton after polymerization, and can also ensure the strength, stability and corrosion resistance of the ink.

[0059] Optionally, the main agent further includes at least one of a first anti-skinning agent and a first solvent. Optionally, the first anti-skinning agent includes 2-butanone oxime. 2-Butanone oxime has an antioxidant effect and prevents skin formation. The first solvent includes diethylene glycol monoethyl ether acetate.

[0060] Optionally, the main agent comprises the following components by mass percentage:

[0061] 60%~80% methyl methacrylate;

[0062] Bisphenol A diglycidyl ether 1%~3%;

[0063] Dimethyl glutarate 6%~10%;

[0064] 2-Butanone oxime 5%~20%;

[0065] Diethylene glycol monoethyl ether acetate 5%~15%.

[0066] The components of the main agent include, but are not limited to, methyl methacrylate comprising 60%, 65%, 70%, 75%, and 80% by mass. 2-Butanone oxime comprising, but is not limited to, 5%, 8%, 10%, 13%, 15%, and 20% by mass. Bisphenol A diglycidyl ether comprising, but is not limited to, 1%, 1.5%, 2%, 2.5%, and 3% by mass. Dimethyl glutarate comprising, but is not limited to, 6%, 7%, 8%, 9%, and 10% by mass. Diethylene glycol monoethyl ether acetate comprising, but is not limited to, 5%, 8%, 10%, 13%, and 15% by mass.

[0067] The curing agent mainly plays a role in curing and toughening.

[0068] Optionally, the curing agent includes an isocyanate monomer. Optionally, the isocyanate monomer includes m-phthalic acid diisocyanate.

[0069] Optionally, the curing agent further includes at least one of a second anti-skinning agent and a second solvent. Optionally, the second anti-skinning agent includes 2-butanone oxime. 2-Butanone oxime has an antioxidant effect, preventing skin formation. Optionally, the second solvent includes propylene glycol methyl ether acetate.

[0070] Optionally, the curing agent comprises the following components by weight percentage:

[0071] 50%~70% m-phenylenedimethyl isocyanate;

[0072] 2-Butanone oxime 10%~30%;

[0073] Propylene glycol methyl ether acetate 10%~30%.

[0074] The curing agent contains, but is not limited to, 50%, 60%, and 70% by mass of isophthalic acid diisocyanate. 2-Butanone oxime contains, but is not limited to, 10%, 20%, and 30% by mass of 2-butanone oxime. Propylene glycol methyl ether acetate contains, but is not limited to, 10%, 20%, and 30% by mass of 2-butanone oxime.

[0075] Pigments and fillers primarily function to adjust the color of the ink, affecting its transmittance, consistency, viscosity, and flowability. Optionally, carbon black can be used as the pigment or filler, resulting in a uniform black effect. Optionally, the particle size D50 of the pigment or filler is 0.7 μm to 1.5 μm. For example, particle sizes D50 can be 0.7 μm, 1 μm, 1.2 μm, or 1.5 μm. Here, particle size D50 refers to the particle size at which the cumulative particle distribution is 50%, also called the median diameter or median particle size. For example, a D50 of 1.2 μm means that among all the particles of the pigment or filler, particles larger than 1.2 μm account for 50%, and particles smaller than 5 μm also account for 50%. In this embodiment, D50 is calculated by volume.

[0076] Diluents mainly act as solvents, adjusting the viscosity, stability, and flowability of inks.

[0077] Optionally, the diluent includes at least one of ethyl acetate, cyclohexanone, tricresylbenzene, and 2-butoxyethanol. Ketone, ester, benzene, and alcohol diluents reduce ink viscosity, improve printability, and effectively dissolve other components.

[0078] Optionally, the diluent comprises the following components by weight percentage:

[0079] Ethyl acetate 10%~30%;

[0080] Cyclohexanone 10%~20%;

[0081] Trimethylbenzene 10%~20%;

[0082] 2-Butoxyethanol 40%~60%.

[0083] The mass percentages of ethyl acetate in the diluent include, but are not limited to, 10%, 20%, and 30%. The mass percentages of cyclohexanone in the diluent include, but are not limited to, 10%, 15%, and 20%. The mass percentages of trimethylbenzene in the diluent include, but are not limited to, 10%, 15%, and 20%. The mass percentages of 2-butoxyethanol in the diluent include, but are not limited to, 40%, 50%, and 60%.

[0084] Optionally, the ink comprises, by weight, parts of:

[0085] 30-40 parts of the main agent;

[0086] 1-5 parts of pigments and fillers;

[0087] 30-50 parts of diluent;

[0088] 10-15 parts of curing agent.

[0089] The main component comprises, but is not limited to, 30, 32, 35, 38, and 40 parts by weight. The pigments and fillers comprise, but are not limited to, 1, 2, 3, 4, and 5 parts by weight. The diluent comprises, but is not limited to, 30, 32, 35, 38, 40, and 50 parts by weight. The curing agent comprises, but is not limited to, 10, 11, 12, 13, 14, and 15 parts by weight.

[0090] Optionally, the ink may also include at least one of a modified silane coupling agent and a defoamer.

[0091] Modified silane coupling agents enhance the bonding between organic and inorganic interfaces, thereby improving the reliability of environmental testing. Optionally, the modified silane coupling agent is an alcohol-modified silane coupling agent. Optionally, the alcohol is selected from at least one of methanol and ethanol. Optionally, the silane coupling agent is KH540.

[0092] Optionally, the modified silane coupling agent comprises the following components by mass percentage:

[0093] Methanol 46%~56%;

[0094] Ethanol 40%~50%;

[0095] The silane coupling agent is KH54O 2%~6%.

[0096] The percentage of methanol in the modified silane coupling agent by mass includes, but is not limited to, 46%, 51%, and 56%. The percentage of ethanol in the modified silane coupling agent by mass includes, but is not limited to, 40%, 45%, and 50%. The percentage of KH540 silane coupling agent in the modified silane coupling agent by mass includes, but is not limited to, 2%, 4%, and 6%.

[0097] Defoamers are used to remove foam and prevent the formation of air bubbles. Optionally, the defoamer is silicone oil.

[0098] Optionally, the ink comprises, by weight percentage:

[0099] Main component 30%~40%;

[0100] Pigments and fillers 1%~5%;

[0101] Diluent 30%~50%;

[0102] Defoamer 1%~3%;

[0103] Modified silane coupling agent 1%~3%;

[0104] Hardener 10%~15%.

[0105] The main component, by weight percentage, includes, but is not limited to, 30%, 32%, 35%, 38%, and 40% of the ink. Pigments and fillers, by weight percentage, include, but are not limited to, 1%, 2%, 3%, 4%, and 5% of the ink. Diluent, by weight percentage, includes, but is not limited to, 30%, 32%, 35%, 38%, 40%, and 50% of the ink. Defoamer, by weight percentage, includes, but is not limited to, 1%, 2%, and 3% of the ink. Modified silane coupling agent, by weight percentage, includes, but is not limited to, 1%, 2%, and 3% of the ink. Curing agent, by weight, includes, but is not limited to, 10%, 11%, 12%, 13%, 14%, and 15%.

[0106] By appropriately adjusting the content of ink components, a semi-transparent ink layer can be prepared. It also exhibits good stability and can withstand various environmental tests.

[0107] A second aspect of this application provides a method for preparing ink. In some embodiments, the method for preparing ink includes the following steps:

[0108] Methyl methacrylate, bisphenol A diglycidyl ether, and dimethyl glutarate were mixed to obtain the main resin, and the main agent was prepared.

[0109] Mix the main agent, pigments, fillers, and a portion of diluent to prepare component A;

[0110] Mix the curing agent and another portion of the diluent to prepare component B.

[0111] Optionally, the main agent further includes at least one of a first anti-skinning agent and a first solvent. The preparation method further includes the following step: mixing at least one of the first anti-skinning agent and the first solvent with the main resin to prepare the main agent.

[0112] Optionally, the diluent added to component A accounts for 70% to 80% of the total mass of the diluent.

[0113] Optionally, the ink may also include at least one of a modified silane coupling agent and a defoamer. The preparation method further includes the following steps: mixing the main agent, pigments and fillers, a portion of the diluent, and at least one of the modified silane coupling agent and the defoamer to prepare component A.

[0114] Components A and B in the above embodiments can be stored separately in opaque bottles under airtight seals. Before use, components A and B are mixed to obtain the ink liquid. To facilitate spin coating, some thinner can be added during the preparation of components A and B, and the remaining thinner is added before use to adjust the viscosity of the ink liquid. Spin coating, short for rotary coating method, is a process in which the substrate to be spin-coated is rotated on an axis perpendicular to its own surface, while simultaneously applying liquid coating material onto the substrate or its sides.

[0115] When the ink includes a defoamer, the defoamer can be added not only during the preparation of component A, but also when component A and component B are mixed before use.

[0116] All the mixing involved in the above steps can be done by mixing in a mixer until the mixture is homogeneous.

[0117] Optionally, the viscosity of the ink can be adjusted to below 0.5 Pa·s (25°C) for use on a spin coater.

[0118] The ink described above can be combined with a spin coating device to prepare a semi-transparent ink layer. The ink composition and spin coating process are simple. The ink layer can shield the adhesive layer while allowing ultraviolet light to pass through, so that the ultraviolet light curing adhesive can be cured under ultraviolet light to form an adhesive layer.

[0119] A third aspect of this application provides a camera decorative component; please refer to [link / reference]. Figures 1 to 4 In one embodiment, the camera decorative assembly 100 includes a lens 11, a decorative element 12, and an ultraviolet-curable adhesive layer 13. The lens 11 includes a lens body 111 and an ink layer 112. The lens body 111 has an outer peripheral surface 111A, a convex surface 111B, and a concave surface 111C. The convex surface 111B and the concave surface 111C are connected through the outer peripheral surface 111A. The ink layer 112 covers the outer peripheral surface 111A and is formed by curing the ink as described above.

[0120] Optionally, please see Figures 5 to 6 Applying an ink layer 112 to the outer peripheral surface 111A of the lens body 111 includes the following steps:

[0121] S10. Fix the concave surface 111C of the lens body 111 onto the rotating suction head 14.

[0122] Understandably, the convex surface 111B of the lens body 111 can be placed upwards in the spacer hole of the bakelite fixture, and the lens body 111 can be sequentially picked up and dropped from the bakelite fixture by the vacuum suction cup linked to the servo motor.

[0123] Optionally, the bakelite fixture spacer holes are arranged in a 6-row × 7-column array. Optionally, the equivalent diameter of the lens body 111 is 25mm to 100mm. For example, the equivalent diameter of the lens body 111 is 25mm, 50mm, or 100mm. Optionally, the thickness of the lens body 111 is 0.5mm to 1.2mm. For example, the thickness of the lens body 111 is 0.5mm, 0.8mm, or 1.2mm.

[0124] Optionally, the rotary suction head 14 is cylindrical. The lens body 111, which is being fed into the machine, is placed on the cylindrical rotary suction head, and its concentricity is corrected by two right-angle automatic positioning fixtures on the equipment. Optionally, the concentricity deviation between the lens body 111 and the cylindrical rotary suction head is <0.05mm. A vacuum is drawn to cause the rotary suction head to adhere to the concave surface 111C of the lens body 111, separating the right-angle fixtures from the lens body 111.

[0125] S20. Rotate the rotating suction head 14 to make the lens body 111 rotate.

[0126] Optionally, the rotation speed is 300 r / min to 1000 r / min.

[0127] S30. Apply ink to the outer peripheral surface 111A of the lens body 111.

[0128] Understandably, the spin coater head 15 is positioned close to the outer peripheral surface 111A of the lens body 111. Optionally, the spin coater head 15 is made of polyurethane resin. Optionally, the orifice diameter of the discharge port of the spin coater head 15 is 0.1 mm to 0.3 mm.

[0129] Optionally, the distance between the discharge surface of the spin coating head and the outer peripheral surface 111A decreases along the direction of gravity. Optionally, the discharge surface of the spin coating head 15 is kept at an angle of 4~6° (e.g., 4°, 5°, 6°) to the outer peripheral surface 111A. This setting facilitates ink overflowing upwards into the gaps when pressure is applied, preventing ink overflow into the concave surface 111C and preventing ink accumulation at the edges of the concave surface 111C. The lifespan of the spin coating head 15 is controlled to be <4h. Optionally, the pressing depth between the spin coating head 15 and the lens body 111 is 1.5±0.5mm, and the ink inside the spin coating head 15 overflows and coats the outer peripheral surface 111A through pressing. Optionally, the spin coating time is 4±1s; the total processing time per piece is 7s / pcs. Compared with the method of spraying or pad printing on the outer peripheral surface 111A, the above spin coating method simplifies the process, improves the uniformity of ink layer thickness, and greatly increases production capacity.

[0130] S40, cures the ink, forming an ink layer.

[0131] The lens body 111, coated with ink, is placed into a box oven along with a bakelite fixture to allow the ink to cure and form an ink layer.

[0132] Optionally, the curing time is 60±5 min. Optionally, the curing temperature is 165±5℃.

[0133] Understandably, the film thickness of the ink layer can be controlled by adjusting the curing time, the spin coating speed, the amount of ink extruded by the spin coating head 15, and the viscosity of the ink.

[0134] The lens 11 prepared by the above method is as follows: Figure 7 As shown, the thickness of the ink layer 112 on lens 11 was confirmed to be 4μm~8μm by slicing and using a 1000X microscope. By examining the convex surface of the spin-coated film, it was confirmed that the transmittance of ink of the same thickness for visible light with a wavelength of 550nm was 9%~18%, and the transmittance for ultraviolet light with a wavelength of 365nm was 6%~15%.

[0135] In this embodiment, the lens 11 is circular. By spin coating, ink can also be applied to the outer peripheral surface of the irregularly shaped lens, which is beneficial for presenting a variety of shapes in the appearance of electronic devices.

[0136] Please continue reading Figure 1 and Figure 2 The decorative element 12 surrounds the lens 11. The decorative element 12 includes a supporting portion 121 and a receiving portion 122, which are bent and connected. The supporting portion 121 includes a supporting surface 121A for supporting the lens 11. The supporting surface 121A and the receiving portion 122 enclose a receiving space for receiving the lens 11. The receiving space is used to receive the lens 11. The receiving portion 122 has an inner surface 122A facing the outer peripheral surface 111A, and the inner surface 122A is provided with a dispensing groove. A UV-curable adhesive layer 13 is located between the lens 11 and the decorative element 13. In this embodiment, the UV-curable adhesive layer 13 is located within the dispensing groove, connecting the lens 11 and the decorative element 13, and is shielded by the ink layer 112. It is understood that the UV-curable adhesive layer 13 being shielded by the ink layer 112 means that when a user observes inward from the lens 11 side of the camera decorative assembly, only the ink layer 112 is visible, and the UV-curable adhesive layer 13 is not visible. Understandably, the receiving space has the same shape and size as lens 11.

[0137] Optionally, connecting the lens 11 to the decorative element 12 includes the following steps:

[0138] Apply UV-curable adhesive to the dispensing groove of decorative part 12;

[0139] The mirror 11 is placed within the receiving space of the decorative piece 12;

[0140] The UV-curable adhesive is cured by irradiating it with UV light transmitted through lens 11, thus curing it into a UV-curable adhesive layer 13.

[0141] Since the ink layer of lens 11 is transparent to ultraviolet light, ultraviolet light can be used to irradiate the ultraviolet-cured adhesive through lens 11, thus curing it. After curing, the ink layer can also cover the ultraviolet-cured adhesive layer 13, providing a better decorative effect for the camera decorative components. This can significantly improve the yield of the dispensing bonding process, reducing time consumption and time costs.

[0142] Furthermore, traditional bonding methods involve adhesive backing, where double-sided tape is applied to the concave surface of the lens to bond it to the decorative component. This method requires partial screen printing of solid-color ink or application of decorative film to mask the double-sided tape on the concave surface, preventing users from seeing it from the outside of the electronic device and affecting its appearance. However, this method adds solid-color ink or decorative film in the thickness direction, occupying a lot of space and failing to fully achieve a three-dimensional effect for the camera decorative component, resulting in a limited and monotonous effect. In this embodiment, UV-curable adhesive is applied to an adhesive groove on the inner side of the housing to form a UV-curable adhesive layer. This UV-curable adhesive layer connects the outer peripheral surface of the lens to the decorative component, saving space and improving the overall space utilization during subsequent stacking of the entire device, thus fully realizing a three-dimensional effect for the camera decorative component.

[0143] The fourth aspect of this application provides a housing, in one embodiment of which the housing includes a housing body and a camera decorative assembly as described above, the camera decorative assembly being disposed on the housing body.

[0144] This application provides a fifth aspect of an electronic device. In one embodiment, the electronic device includes a camera module, a housing as described above, and a circuit board assembly. The housing is disposed on the object side of the camera module, and the camera decorative assembly is correspondingly disposed with respect to the camera module. The circuit board assembly is electrically connected to the camera module and is used to control the camera module to take pictures.

[0145] The following detailed description is provided in conjunction with specific embodiments. Unless otherwise specified, all raw materials and instruments used in the following embodiments are commercially available. Unless otherwise specified, all processes involved are conventionally selected by those skilled in the art.

[0146] Example 1

[0147] This embodiment provides an ink and its preparation method, the steps of which are as follows:

[0148] Step 1: Prepare the components according to the mass percentages shown in Table 1.

[0149] Table 1

[0150]

[0151] Step 2: At room temperature, mix the main agent, pigments and fillers, modified silane coupling agent and 75 wt% diluent to prepare component A; mix the curing agent and 20 wt% diluent to prepare component B.

[0152] Step 3: Before use, mix component A, component B, silicone oil and 5 wt% diluent to obtain an ink liquid with a viscosity of less than 0.5 Pa·s at 25°C.

[0153] Example 2

[0154] This embodiment provides an ink and its preparation method, which are basically the same as those in Embodiment 1, except that in step 1, the components are prepared according to the mass percentages shown in Table 2.

[0155] Table 2

[0156]

[0157] Step 2: At room temperature, mix the main agent, pigments and fillers, modified silane coupling agent and 75 wt% diluent to prepare component A; mix the curing agent and 20 wt% diluent to prepare component B.

[0158] Step 3: Before use, mix component A, component B, silicone oil and 5 wt% diluent to obtain an ink liquid with a viscosity of less than 0.2 Pa·s at 25°C.

[0159] Example 3

[0160] This embodiment provides an ink and its preparation method, which are basically the same as those in Embodiment 1, except that in step 1, the components are prepared according to the mass percentages shown in Table 3.

[0161] Table 3

[0162]

[0163] Step 2: At room temperature, mix the main agent, pigments and fillers, modified silane coupling agent and 75 wt% diluent to prepare component A; mix the curing agent and 20 wt% diluent to prepare component B.

[0164] Step 3: Before use, mix component A, component B, silicone oil and 5 wt% diluent to obtain an ink liquid with a viscosity of less than 0.7 Pa·s at 25°C.

[0165] The ink liquid from the above embodiments was spin-coated onto the convex surface of the lens and cured at 165°C for 60 min to obtain an ink layer with a thickness of 6 μm. The transmittance of the ink layers of each embodiment for visible light with a wavelength of 550 nm and for ultraviolet light with a wavelength of 365 nm was tested. Both 550 nm and 365 nm wavelength light rays were incident perpendicularly onto the ink layer. The results are shown in Table 4.

[0166] Table 4

[0167]

[0168] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0169] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A camera decorative component, characterized in that, include: A lens, comprising a lens body and an ink layer, the lens body having an outer peripheral surface, the ink layer covering the outer peripheral surface, the ink layer being formed by ink curing; Decorative elements surround the lens; as well as An ultraviolet-curable adhesive layer is located between the lens and the decorative element, connecting the lens and the decorative element, and is shielded by the ink layer; The ink comprises a main component, pigments, fillers, diluents, and a curing agent; The main agent includes a main resin, and the main resin comprises the following components in parts by weight: 60-80 parts of methyl methacrylate; 1-3 parts of bisphenol A diglycidyl ether; 6-10 parts of dimethyl glutarate; The main agent further includes a first anti-skinning agent and a first solvent, wherein the first anti-skinning agent includes 2-butanone oxime and the first solvent includes diethylene glycol monoethyl ether acetate. The curing agent includes isocyanate monomers; The ink also includes a modified silane coupling agent.

2. The camera decorative assembly according to claim 1, characterized in that, The curing agent also includes at least one of a second anti-skinning agent and a second solvent.

3. The camera decorative assembly according to claim 2, characterized in that, Includes at least one of the following features: (1) The isocyanate monomer includes m-phenylenedimethyl isocyanate; (2) The second anti-skinning agent includes 2-butanone oxime; (3) The second solvent includes propylene glycol methyl ether acetate.

4. The camera decorative assembly according to claim 3, characterized in that, Includes at least one of the following features: (1) The main agent comprises the following components by mass percentage: 60%~80% methyl methacrylate; Bisphenol A diglycidyl ether 1%~3%; Dimethyl glutarate 6%~10%; 2-Butanone oxime 5%~20%; Diethylene glycol monoethyl ether acetate 5%~15%; (2) The curing agent comprises the following components by mass percentage: 50%~70% m-phenylenedimethyl isocyanate; 2-Butanone oxime 10%~30%; Propylene glycol methyl ether acetate 10%~30%.

5. The camera decorative assembly according to any one of claims 1 to 4, characterized in that, The pigments and fillers satisfy at least one of the following characteristics: (1) The pigment and filler are carbon black; (2) The particle size D50 of the pigments and fillers is 0.7μm~1.5μm.

6. The camera decorative assembly according to any one of claims 1 to 4, characterized in that, The diluent includes at least one of ethyl acetate, cyclohexanone, tricresylbenzene, and 2-butoxyethanol.

7. The camera decorative assembly according to claim 6, characterized in that, The diluent comprises the following components by weight percentage: Ethyl acetate 10%~30%; Cyclohexanone 10%~20%; Trimethylbenzene 10%~20%; 2-Butoxyethanol 40%~60%.

8. The camera decorative assembly according to any one of claims 1 to 4 and 7, characterized in that, The ink comprises, by weight, parts of: 30-40 parts of the main agent; 1-5 parts of pigments and fillers; 30-50 parts of diluent; 10-15 parts of curing agent.

9. The camera decorative assembly according to any one of claims 1 to 4 and 7, characterized in that, The ink also includes an antifoaming agent.

10. The camera decorative assembly according to claim 9, characterized in that, Includes at least one of the following features: (1) The defoamer is silicone oil; (2) The modified silane coupling agent is an alcohol-modified silane coupling agent.

11. The camera decorative assembly according to any one of claims 1 to 4, 7, and 10, characterized in that, The ink comprises, by weight percentage: Main component 30%~40%; Pigments and fillers 1%~5%; Diluent 30%~50%; Defoamer 1%~3%; Modified silane coupling agent 1%~3%; Hardener 10%~15%.

12. The camera decorative assembly according to any one of claims 1 to 4, 7, and 10, characterized in that, The method for preparing the ink includes the following steps: Methyl methacrylate, bisphenol A diglycidyl ether, and dimethyl glutarate were mixed to obtain the main resin, and the main agent was prepared. Component A is prepared by mixing the main agent, pigments and fillers, modified silane coupling agent, and a portion of diluent; Mix the curing agent and another portion of the diluent to prepare component B.

13. The camera decorative assembly according to any one of claims 1 to 4, characterized in that, The decorative component includes a support portion and a receiving portion, which are bent and connected. The support portion includes a support surface for supporting the lens. The support surface and the receiving portion enclose a receiving space for receiving the lens. The receiving space is used to receive the lens. The receiving portion has an inner side facing the outer peripheral surface. The inner side is provided with a dispensing groove, and the ultraviolet-curable adhesive layer is located in the dispensing groove.

14. A housing, characterized in that, include: Shell body; as well as The camera decorative assembly according to any one of claims 1 to 13, wherein the camera decorative assembly is disposed on the housing body.

15. An electronic device, characterized in that, include: Camera module; The housing according to claim 14, wherein the housing is disposed on the object side of the camera module, and the camera decorative component is disposed correspondingly to the camera module; as well as A circuit board assembly, which is electrically connected to the camera module, is used to control the camera module to take pictures.

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