CN114157736A - Mobile phone rear cover film structure applying micro-lens array on polycarbonate layer - Google Patents
Mobile phone rear cover film structure applying micro-lens array on polycarbonate layer Download PDFInfo
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- CN114157736A CN114157736A CN202011521570.7A CN202011521570A CN114157736A CN 114157736 A CN114157736 A CN 114157736A CN 202011521570 A CN202011521570 A CN 202011521570A CN 114157736 A CN114157736 A CN 114157736A
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- Prior art keywords
- layer
- resin
- microlens array
- polycarbonate
- mobile phone
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0279—Improving the user comfort or ergonomics
- H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
- H04M1/185—Improving the rigidity of the casing or resistance to shocks
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Telephone Set Structure (AREA)
Abstract
A back cover film structure of a mobile phone applying a micro lens array on a polycarbonate layer. Compared with the existing film, the decorative film applied to the mobile phone rear cover has a hazy visual sense, so that various aesthetic feelings can be provided for users.
Description
Technical Field
The present invention relates to a back cover film structure of a cellular phone using a microlens Array on a Polycarbonate layer, and more particularly, to a back cover film structure of a cellular phone using a microlens Array on a Polycarbonate layer, characterized in that a microlens Array (MLA) layer formed in a UV patterning manner is formed in front of a Polycarbonate (PC).
Background
Recently, with the development of mobile phone and smart phone technologies, mobile phones and smart phones (hereinafter, collectively referred to as "mobile phones") of various designs are on the market.
These cellular phones are composed of a housing constituting the external appearance of the cellular phone and various circuit components mounted inside the housing to perform the functions inherent to the cellular phone.
Among them, a rear cover (i.e., a case) attached to a back of a cellular phone is generally made of synthetic resin and has relatively low hardness, and thus a flaw such as a scratch is easily generated when an external impact is applied.
Therefore, recently, in order to protect mobile phone products and improve aesthetic sense, technical development of mobile phone decorative films is actively being developed.
In order to satisfy various personality pursuits of modern people, the mobile phone decoration film needs to have various colors, glosses, patterns (i.e., patterns), and the like.
[ Prior art documents ]
[ patent document ]
Patent document 1: korean patent application No. 10-2018-.
Disclosure of Invention
[ problem ] to provide a method for producing a semiconductor device
The present invention has been made to solve the above problems, and an object of the present invention is to provide a mobile phone back cover film using a UV patterning type microlens array, in which a decorative film applied to a mobile phone back cover is visually hazy compared to a conventional film, thereby providing various aesthetic feelings to a user.
Another object of the present invention is to provide a back cover film for a cellular phone using a UV patterning microlens array, which can reduce the cost by shortening the manufacturing process of the film, improve scratch resistance and chemical resistance compared to conventional films, and ensure a high visibility state without leaving any trace such as a fingerprint.
[ technical solution ] A
In order to solve the technical problems as described above, a back cover film structure of a cellular phone applying a microlens array on a polycarbonate layer according to the present invention includes: a Polycarbonate (PC) layer; a Micro Lens Array (MLA) layer formed in front of the polycarbonate layer in a UV-patterned manner; a UV pattern layer formed on a rear surface of the polycarbonate layer; a deposition layer in a form of UV resin formed on a rear surface of the lower UV pattern layer; and a screen printing layer formed on the back of the deposition layer.
Further, a microlens array layer formed in a roll-to-roll lens coating form in front of the polycarbonate layer and the polycarbonate layer; a UV pattern layer formed on a rear surface of the polycarbonate layer; a deposition layer in a form of UV resin formed on a rear surface of the UV pattern layer; and a screen printing layer formed on the back of the deposition layer.
In addition, the microlens array layer may include at least one of an epoxy resin, an acrylic resin, a polyolefin resin, a polyamide resin, a polyester resin, a polyvinyl chloride resin, a polyvinyl acetate resin, a petroleum resin, a phenol resin, a polystyrene resin, and a polyurethane resin.
[ PROBLEMS ] the present invention
As described above, according to the present invention, the decoration film applied to the rear cover of the cellular phone can be visually hazy compared to the conventional thin film, thereby providing various aesthetic senses to the user.
In addition, the invention has the following advantages: the cost can be reduced by shortening the production process of the film, and the scratch resistance and chemical resistance are improved compared with the conventional film, and no trace such as fingerprint is left, thereby ensuring a high-identification state.
Drawings
FIG. 1 is a schematic diagram of a microlens array layer according to an embodiment.
Fig. 2 is a schematic view of a mobile phone decoration film part formed with a micro lens array layer applied to a mobile phone case.
Fig. 3 is a schematic view of a mobile phone decoration film formed with a microlens array layer according to an embodiment.
Fig. 4 is a schematic diagram of a microlens array layer according to another embodiment.
Fig. 5 is a schematic view of a mobile phone decoration film formed with a microlens array layer according to another embodiment.
Fig. 6 is an enlarged view of a microlens array layer according to another embodiment.
[ description of reference numerals ]
100: mobile phone decoration film
110: polycarbonate layer
120: microlens array layer
130: lower UV pattern layer
140: deposit layer
150: and (6) screen printing of the layer.
Detailed Description
Hereinafter, a structure of a back cover film for a cellular phone using a microlens array on a polycarbonate layer according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that, in the drawings, the same constituent elements or components are illustrated by the same reference numerals as much as possible. In describing the present invention, a detailed description of related well-known functions or configurations will be omitted so as not to obscure the gist of the present invention.
Fig. 1 is a schematic view of a microlens array layer according to an embodiment, and fig. 3 is a schematic view of a mobile phone decoration film formed with a microlens array layer according to an embodiment.
The mobile phone decoration film 100 according to an embodiment of the present invention is a film applied to a rear cover formed on a rear surface of a mobile phone, and includes a Polycarbonate (PC) layer, a Micro Lens Array (MLA) layer, a UV pattern layer, a deposition layer, and a screen printing layer.
The polycarbonate layer 110 is a thermoplastic plastic. Has the characteristics of impact resistance, heat resistance, weather resistance, self-extinguishing property, transparency and the like, and has the impact strength which is about 150 times or more of that of toughened glass, thereby having excellent flexibility and processability. As a substitute material for acrylic which is easily broken and easily deformed, and a material for use as a backup material for general plate glass, they are widely used.
The microlens array layer 120, as a thin film layer formed in a UV patterning manner, may be formed of at least one of an epoxy resin, an acrylic resin, a polyolefin resin, a polyamide resin, a polyester resin, a polyvinyl chloride resin, a polyvinyl acetate resin, a petroleum resin, a phenol resin, a polystyrene resin, and a polyurethane resin.
In addition, the microlens array layer 120 may be formed in front of the polycarbonate layer 110 by a gravure process using a gravure roll formed with a predetermined pattern or shape of intaglio grooves.
In the microlens array layer 120, after the composition is filled in the concave groove, the cross section may have a concave-convex shape as gravure printing is performed on the front surface of the microlens array layer.
The adhesive according to an embodiment may use a resin material having a predetermined viscosity. Since a viscous substance is used, the adhesion force between the film, the pattern layer or the metal decorative layer can be improved without providing a separate adhesive layer. The adhesive may include at least one of an epoxy resin, an acrylic resin, a polyolefin resin, a polyamide resin, a polyester resin, a polyvinyl chloride resin, a polyvinyl acetate resin, a petroleum resin, a phenol resin, a polystyrene resin, and a polyurethane resin.
The UV printing system uses a dedicated liquid ink which is instantly cured while being exposed to UV light, i.e., has a property of instantly drying, and instantly dries by ultraviolet rays, so that it can embody various colors without being restricted by materials, and has strong anti-discoloration and moisture-proof properties, thereby ensuring excellent durability based on external climate change.
Even if the pattern layer is not a UV type pattern layer, the pattern layer may be formed by a gravure printing process using a gravure roll having a surface formed with a predetermined pattern or shape of a gravure groove. At this time, after the composition for forming the UV pattern layer is filled in the intaglio groove, the pattern layer having an uneven shape in cross section can be formed as the intaglio printing is performed on the color print layer. As described above, when the UV pattern layer is formed, various designs can be exhibited, so that the aesthetic sense can be improved.
The composition for forming the pattern layer may contain a viscous substance. The adhesive substance may include at least one of epoxy resin, acrylic resin, polyolefin resin, polyamide resin, polyester resin, polyvinyl chloride resin, polyvinyl acetate resin, petroleum resin, phenol resin, polystyrene resin, and polyurethane resin. The composition for forming a pattern layer containing a viscous substance is filled into a gravure roll having a surface on which a gravure groove is formed, thereby allowing a gravure printing process to be performed. Therefore, the pattern layer can be formed immediately without additional curing process in the subsequent process, thereby simplifying the process and shortening the process time.
In the UV pattern layer formed on the front surface of the polycarbonate layer 110, if the composition for forming the UV pattern layer contains the same adhesive substance as that used for the colored print layer, the interfacial characteristics between the colored print layer and the UV pattern layer can be improved.
The UV pattern layer 130 is formed on the rear surface of the polycarbonate layer, and may be formed with various patterns (patterns) as is well known in the art to which the present invention pertains.
The Deposition layer 140 is formed on the back surface of the lower UV pattern layer, and may be formed based on Chemical Vapor Deposition (CVD), Physical Vapor Deposition (PVD), or the like.
Chemical vapor deposition, which utilizes chemical reactions during the fabrication process, is a process technique for forming a silicon thin film or the like on a substrate in the fabrication process of an integrated circuit or the like. Is widely used for manufacturing Silicon oxide films, Silicon nitride films, Amorphous Silicon (Amorphous Silicon) films, and the like. When a gas containing a chemical substance is plasmatized by applying thermal energy or optical energy or by high frequency, the raw material is atomized to greatly improve the reactivity, and adsorbed and deposited on the substrate.
The physical vapor deposition process is a process of depositing an oxide semiconductor, GaAs, or the like on a substrate by melting a compound substance to prepare a target substance in a solid state, volatilizing the target substance by heat or an electron beam, and depositing the target substance on the substrate. At this time, the raw material is volatilized in a gaseous state by heat, laser, electron beam, or the like, and the volatilized gaseous raw material becomes a solid state when contacting the substrate.
The screen printing layer 150 may be formed on the rear surface of the deposition layer 140 by using a screen printing method.
Fig. 4 is a schematic view of a microlens array layer according to another embodiment, fig. 5 is a schematic view of a mobile phone decoration film formed with a microlens array layer according to another embodiment, and fig. 6 is an enlarged view of a microlens array layer according to another embodiment.
The mobile phone decoration film 100 according to an embodiment of the present invention is a film applied to a rear cover formed on a rear surface of a mobile phone, and includes a Polycarbonate (PC) layer, a Micro Lens Array (MLA) layer, a UV pattern layer, a deposition layer, and a screen printing layer.
The polycarbonate layer 110 is a thermoplastic plastic. Has the characteristics of impact resistance, heat resistance, weather resistance, self-extinguishing property, transparency and the like, and has the impact strength which is about 150 times or more of that of toughened glass, thereby having excellent flexibility and processability. As a substitute material for acrylic which is easily broken and easily deformed and a spare material for general plate glass, there are widely used.
The microlens array layer is characterized in that a microlens array layer 120 is formed in front of a polycarbonate layer 110 and the polycarbonate layer 110, the microlens array layer 120 is formed in a lens coating form during a roll extrusion process, and the microlens array layer 120 is formed in a form that a base layer is spaced apart from a convex lens.
At this time, the width a of the lenses of the microlens array layer is 100 to 130 μm, the thickness c is 5 to 15 μm, and the lens interval b is 5 to 15 μm, so that the haze can be adjusted by adjusting the values within the numerical range.
The extrusion molding refers to a process performed to manufacture an object having a fixed cross-sectional profile, and the extrusion molding process may also improve the strength of the phone decoration film 100.
According to another embodiment of the polycarbonate layer 110, at least one roller may be used during the roll extrusion process to form the polycarbonate layer 110.
As an example, when a raw material of polycarbonate is injected into an extruder, the raw material may be melted by heating to form a gel. At this time, the polycarbonate layer is extruded by spreading the colloidal raw material in a flat plate form or by pressing the colloidal raw material with a roller in a form having a constant thickness and a flat surface.
The smoothness of the panel can be maintained by injecting air under pressure during the process.
According to the polycarbonate layer 110 of the present invention, a plate or a roll for extrusion may be formed with an indentation in the shape of a microlens array layer to form the microlens array layer.
Thus, the microlens array can be patterned on the polycarbonate during the extrusion process.
That is, the microlens array layer (120) according to an embodiment serves as a processed surface formed during extrusion molding of the polycarbonate layer (110), and the raw materials of the microlens array layer (120) and the polycarbonate layer (110) may be the same.
The UV pattern layer 130 is formed on the rear surface of the polycarbonate layer, and may be formed with various patterns (patterns) as is well known in the art to which the present invention pertains.
The Deposition layer 140 is formed on the rear surface of the lower UV pattern layer 130, and may be formed based on Chemical Vapor Deposition (CVD), Physical Vapor Deposition (PVD), or the like.
The screen printing layer (150) may be formed on the rear surface of the deposition layer (140) in a screen printing manner.
On the other hand, fig. 2 is a schematic diagram of applying the part of the mobile phone decoration film formed with the microlens array layer 120 to the mobile phone case 200, the mobile phone case 200 can be clearly distinguished into the part 220 applied with the mobile phone decoration film 100 and the part 210 not applied with the mobile phone decoration film, and the applied part 220 can be seen as hazy in vision.
That is, according to the present invention, a haze is visually generated by the microlens array layer as compared to a conventional decoration film applied to a rear cover, thereby providing various aesthetic feelings to a user, and scratch resistance, chemical resistance, and durability are improved as compared to a conventional film, and a high recognition state is secured without leaving any trace such as a fingerprint.
The preferred embodiments are disclosed in the drawings and the specification. Although specific terms are used herein, they are used only for the purpose of describing the present invention, and are not intended to limit the meaning or the scope of the present invention described in the claims. It is therefore to be understood that numerous modifications may be made thereto and that other embodiments may be devised which are equivalent to those of ordinary skill in the art. Therefore, the true technical scope of the present invention will be determined based on the technical idea of the claims.
Claims (3)
1. A back cover film structure for a cellular phone applying a microlens array on a polycarbonate layer, the film to be attached to a back cover of the cellular phone, wherein the back cover film structure for a cellular phone comprises: a polycarbonate layer; a microlens array layer formed in front of the polycarbonate layer in a UV-patterned manner; a UV pattern layer formed on a rear surface of the polycarbonate layer; a deposition layer in a form of UV resin formed on a rear surface of the lower UV pattern layer; and a screen printing layer formed on the back of the deposition layer.
2. A back cover film structure for a cellular phone applying a microlens array on a polycarbonate layer, the film to be attached to a back cover of the cellular phone, wherein the back cover film structure for a cellular phone comprises: a microlens array layer formed in a roll-to-roll lens coating form on the front of the polycarbonate layer and the polycarbonate layer; a UV pattern layer formed on a rear surface of the polycarbonate layer; a deposition layer in a form of UV resin formed on a rear surface of the UV pattern layer; and a screen printing layer formed on the back of the deposition layer.
3. The back cover film structure for cellular phones using a microlens array on a polycarbonate layer as claimed in claim 1 or 2, wherein the microlens array layer comprises at least one of epoxy resin, acrylic resin, polyolefin resin, polyamide resin, polyester resin, polyvinyl chloride resin, polyvinyl acetate resin, petroleum resin, phenol resin, polystyrene resin, and polyurethane resin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200114627A KR102521202B1 (en) | 2020-09-08 | 2020-09-08 | Cellular phone decoration film with micro lens array applied on the pc layer |
| KR10-2020-0114627 | 2020-09-08 |
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| Publication Number | Publication Date |
|---|---|
| CN114157736A true CN114157736A (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011521570.7A Pending CN114157736A (en) | 2020-09-08 | 2020-12-21 | Mobile phone rear cover film structure applying micro-lens array on polycarbonate layer |
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| Country | Link |
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| KR (1) | KR102521202B1 (en) |
| CN (1) | CN114157736A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024181658A1 (en) * | 2023-02-27 | 2024-09-06 | 삼성전자 주식회사 | Exterior cover for electronic device, electronic device comprising same, and method for manufacturing same |
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2020
- 2020-09-08 KR KR1020200114627A patent/KR102521202B1/en active IP Right Grant
- 2020-12-21 CN CN202011521570.7A patent/CN114157736A/en active Pending
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| KR20220032829A (en) | 2022-03-15 |
| KR102521202B1 (en) | 2023-04-25 |
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