KR20210029454A - Cover plate of mobile terminal and method of manufacturing the same - Google Patents

Abstract

Disclosed is a cover plate for a mobile terminal, including: a base plate layer forming an outer shape of the mobile terminal, having one surface exposed to an outside, and having a curved part formed at a corner portion of the base plate layer; an adhesive layer having one surface coupled to an opposite surface of the base plate layer, formed of a transparent material, and having adhesive strength generated by a specific external stimulus; and a decoration film layer having one surface coupled to an opposite surface of the adhesive layer, and including a color pattern or a shape pattern, wherein the base plate layer is formed of a plastic composite material, and the curved part is formed by stacking the adhesive layer and the decoration film layer on the base plate layer, and bending and deforming a stacked structure. Accordingly, the curved part is implemented without using glass, and an exterior formed of a glass material is implemented with uniform quality.

Description

Mobile terminal cover plate and its manufacturing method TECHNICAL FIELD [COVER PLATE OF MOBILE TERMINAL AND METHOD OF MANUFACTURING THE SAME}

The present invention relates to a cover plate forming the exterior of a mobile terminal.

The functions of mobile terminals are diversifying, and based on the development of hardware, they are becoming slimmer and lighter, and high performance is increasing so that they can perform various functions at the same time.

In addition, modern mobile terminals have not only functional elements, but also aesthetic elements of the appearance of the mobile terminal to appeal to consumers. In applying various design elements to the surface of a mobile terminal, research is being conducted on various methods that can pursue both beauty and robustness.

The present invention can provide a cover plate capable of implementing the appearance of a glass material even without using a glass material in the cover plate forming the exterior of a mobile terminal.

The present invention can provide a cover plate in which not only a simple pattern or a single color, but also various patterns and colors are implemented on the exterior of a mobile terminal at low cost.

The cover plate of the mobile terminal according to an embodiment of the present invention forms the outer shape of the mobile terminal, one surface is exposed to the outside, a base plate layer including a curved surface at a corner portion, and one surface is coupled to the other surface of the base plate layer. It is formed of a transparent material and includes an adhesive layer generating adhesive force due to a specific external stimulus and a decoration film layer having one surface bonded to the other surface of the adhesive layer and including a color pattern or shape pattern, and the base plate layer is plastic It is a composite material, and the curved portion may be formed by bending deformation after laminating the adhesive layer and the decoration film layer on the base plate layer.

In addition, a shielding printing layer formed on the other surface of the decoration film layer may be further included.

In addition, when the adhesive layer is exposed to ultraviolet rays, adhesion may occur.

In addition, the thickness of the decoration film layer may be formed within 2.2% of the thickness of the base plate layer.

In addition, the material of the decoration film layer may be at least partially the same as the material of the base plate.

In addition, it may further include a hard coating layer applied to one surface of the base plate layer.

In addition, it may further include an anti-fingerprint layer applied to one surface of the hard coating layer.

A method of manufacturing a cover plate for a mobile terminal according to an embodiment of the present invention is a process of preparing a base plate layer in which a base plate operated in a preset shape is disposed in an apparatus for processing, and a decoration film is cut in response to the shape of the base plate. The decoration film layer cutting process, the bonding process of bonding the other side of the base plate to the one side of the decoration film, the process of forming a shielding printed layer on the other side of the decoration film, and the base plate, the decoration film, and A banding process of bending at least a part of the shielding printing layer according to a preset curvature may be included.

The effect of the cover plate and the manufacturing method of the mobile terminal according to the present invention will be described as follows.

The cover plate of a mobile terminal according to various embodiments of the present invention can implement a curved portion without using glass, and can implement the appearance of a glass material with uniform quality.

The cover plate of the mobile terminal according to the present invention can implement various patterns and colors at low cost.

Further scope of the applicability of the present invention will become apparent from the detailed description below. However, since various changes and modifications within the spirit and scope of the present invention can be clearly understood by those skilled in the art, detailed description and specific embodiments such as preferred embodiments of the present invention are understood to be given by way of example only. It should be.

1 is a block diagram illustrating a mobile terminal related to the present invention.
2A and 2B are conceptual diagrams of an example of a mobile terminal related to the present invention viewed from different directions.
3 is a view conceptually showing a cross section of a cover plate according to an embodiment of the present invention.
4 is a view conceptually showing a cross section of a cover plate according to another embodiment of the present invention.
5 is a flow chart showing a method of manufacturing a cover plate according to an embodiment of the present invention.
6 to 7 are flowcharts illustrating a method of manufacturing a cover plate according to various embodiments of the present disclosure.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for constituent elements used in the following description are given or used interchangeably in consideration of only the ease of preparation of the specification, and do not have meanings or roles that are distinguished from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

Terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

Mobile terminals described herein include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation systems, and slate PCs. , Tablet PC (tablet PC), ultrabook (ultrabook), wearable device (wearable device, for example, smartwatch, glass-type terminal (smart glass), HMD (head mounted display)), etc. may be included. have.

However, it is understood that the configuration according to the embodiment described in the present specification may also be applied to fixed terminals such as digital TV, desktop computer, digital signage, etc., except when applicable only to mobile terminals. Technicians will find it easy.

2 is a front perspective view and a rear perspective view of a mobile terminal 100 related to the present invention.

The mobile terminal 100 of the present invention may be implemented as a bar-shaped terminal body as shown in FIGS. 2A and 2B, but the present invention is not limited thereto, and a form in which the mobile terminal 100 can be combined with an auxiliary device is sufficient. . As an example, a mobile terminal in the form of a smart watch may also be applied to the present invention. In this case, the terminal case of the auxiliary device is coupled to the rear surface of the smart watch mobile terminal, and the foldable cover is hinged so as to be rotatable to the terminal case. The front of the mobile terminal will be optionally provided with a cover.

The mobile terminal 100 includes a case (eg, a frame, a housing, a cover, etc.) forming an exterior. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in an inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on the front of the terminal body to output information. As illustrated, the window 151a of the display unit 151 may be mounted on the front case 101 to form the front surface of the terminal body together with the front case 101.

In some cases, electronic components may be mounted on the rear case 102 as well. Electronic components that can be mounted on the rear case 102 include a detachable battery, an identification module, and a memory card. In this case, a rear cover 103 for covering the mounted electronic component may be detachably coupled to the rear case 102. Accordingly, when the rear cover 103 is separated from the rear case 102, the electronic components mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a part of the side of the rear case 102 may be exposed. In some cases, when the rear case 102 is combined, the rear case 102 may be completely covered by the rear cover 103. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b or the sound output unit 152b to the outside.

These cases 101, 102, 103 may be formed by injection of synthetic resin or may be formed of a metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

Unlike the above example in which a plurality of cases provide an inner space for accommodating various electronic components, the mobile terminal 100 may be configured such that one case provides the inner space. In this case, a unibody mobile terminal 100 in which synthetic resin or metal is connected from the side to the rear may be implemented.

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) that prevents water from permeating into the terminal body. For example, the waterproof unit is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, and the combination thereof It may include a waterproof member that seals the inner space of the city.

The mobile terminal 100 includes a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, and first and second sound output units. Cameras 121a and 121b, first and second operation units 123a and 123b, microphone 122, interface unit 160, and the like may be provided.

Hereinafter, as shown in FIGS. 2A and 2B, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, and a light output unit ( 154), a first camera 121a and a first operation unit 123a are disposed, a second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on the side of the terminal body, and the terminal body The mobile terminal 100 in which the second sound output unit 152b and the second camera 121b are disposed on the rear surface of will be described as an example.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as necessary, or may be disposed on different sides. For example, the first manipulation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side of the terminal body rather than on the rear surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven in the mobile terminal 100, or UI (User Interface) and GUI (Graphic User Interface) information according to such execution screen information. .

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display. display), a 3D display, and an e-ink display.

In addition, two or more display units 151 may exist depending on the implementation form of the mobile terminal 100. In this case, in the mobile terminal 100, a plurality of display units may be spaced apart or integrally disposed on one surface, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method. By using this, when a touch is made to the display unit 151, the touch sensor detects the touch, and the controller 180 may be configured to generate a control command corresponding to the touch based on this. The content input by the touch method may be letters or numbers, or menu items that can be indicated or designated in various modes.

Meanwhile, the touch sensor is formed in a film form having a touch pattern and is disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or is a metal wire patterned directly on the rear surface of the window 151a. May be. Alternatively, the touch sensor may be integrally formed with the display. For example, the touch sensor may be disposed on a substrate of the display or may be provided inside the display.

As such, the display unit 151 may form a touch screen together with a touch sensor, and in this case, the touch screen may function as a user input unit 123 (see FIG. 1 ). In some cases, the touch screen may replace at least some functions of the first manipulation unit 123a.

The first sound output unit 152a may be implemented as a receiver that transmits a call sound to the user's ear, and the second sound output unit 152b is a loud speaker that outputs various alarm sounds or multimedia playback sounds. It can be implemented in the form of ).

A sound hole for emitting sound generated from the first sound output unit 152a may be formed in the window 151a of the display unit 151. However, the present invention is not limited thereto, and the sound may be configured to be emitted along an assembly gap between structures (eg, a gap between the window 151a and the front case 101). In this case, the externally formed hole for sound output is not visible or hidden, so that the appearance of the mobile terminal 100 may be more simple.

The light output unit 154 is configured to output light for notifying when an event occurs. Examples of the event include message reception, call signal reception, missed call, alarm, schedule notification, e-mail reception, and information reception through an application. When the user's event confirmation is detected, the controller 180 may control the light output unit 154 to terminate the output of light.

The first camera 121a processes an image frame of a still image or a moving picture obtained by an image sensor in a photographing mode or a video call mode. The processed image frame may be displayed on the display unit 151 and may be stored in the memory 170.

The first and second manipulation units 123a and 123b are an example of a user input unit 123 that is operated to receive a command for controlling the operation of the mobile terminal 100, and may also be collectively referred to as a manipulating portion. have. The first and second manipulation units 123a and 123b may be employed in any manner as long as the user operates while receiving a tactile feeling, such as touch, push, and scroll. In addition, the first and second manipulation units 123a and 123b may also be employed in a manner in which the first and second manipulation units 123a and 123b are manipulated without a user's tactile feeling through proximity touch, hovering touch, or the like.

In this drawing, the first manipulation unit 123a is illustrated as a touch key, but the present invention is not limited thereto. For example, the first manipulation unit 123a may be a push key (mechanical key) or may be configured as a combination of a touch key and a push key.

Contents input by the first and second manipulation units 123a and 123b may be set in various ways. For example, the first operation unit 123a receives commands such as menu, home key, cancel, search, etc., and the second operation unit 123b is output from the first or second sound output units 152a, 152b. Commands such as adjusting the volume of sound and switching to the touch recognition mode of the display unit 151 may be input.

Meanwhile, as another example of the user input unit 123, a rear input unit (not shown) may be provided on the rear surface of the terminal body. This rear input unit is manipulated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on/off, start, end, scroll, etc., control the volume of sound output from the first and second sound output units 152a and 152b, and touch recognition mode of the display unit 151 You can receive commands such as conversion of. The rear input unit may be implemented in a form capable of inputting by a touch input, a push input, or a combination thereof.

The rear input unit may be disposed to overlap the front display unit 151 in the thickness direction of the terminal body. For example, when the user holds the terminal body with one hand, the rear input unit may be disposed on the rear upper end of the terminal body so that the user can easily manipulate the terminal body using the index finger. However, the present invention is not necessarily limited thereto, and the position of the rear input unit may be changed.

When the rear input unit is provided on the rear side of the terminal body, a new type of user interface can be implemented using the rear input unit. In addition, when the touch screen or the rear input unit described above replaces at least some functions of the first manipulation unit 123a provided on the front of the terminal body, and the first manipulation unit 123a is not disposed on the front of the terminal body, The display unit 151 may be configured with a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing a user's fingerprint, and the controller 180 may use the fingerprint information sensed through the fingerprint recognition sensor as an authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive a user's voice and other sounds. The microphone 122 may be provided at a plurality of locations and configured to receive stereo sound.

The interface unit 160 becomes a passage through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 is a connection terminal for connection with another device (eg, earphone, external speaker), a port for short-range communication (eg, an infrared port (IrDA Port), a Bluetooth port (Bluetooth)). Port), a wireless LAN port, etc.], or at least one of a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented in the form of a socket for accommodating an external card such as a Subscriber Identification Module (SIM) or a User Identity Module (UIM), or a memory card for storing information.

A second camera 121b may be disposed on the rear surface of the terminal body. In this case, the second camera 121b has a photographing direction substantially opposite to the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix format. Such a camera may be referred to as an'array camera'. When the second camera 121b is configured as an array camera, an image may be photographed in various ways using a plurality of lenses, and an image of better quality may be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 illuminates light toward the subject when photographing the subject with the second camera 121b.

A second sound output unit 152b may be additionally disposed on the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a, and may be used to implement a speakerphone mode during a call.

At least one antenna for wireless communication may be provided in the terminal body. The antenna may be embedded in the terminal body or may be formed in a case. For example, an antenna that forms a part of the broadcast reception module 111 (refer to FIG. 1) may be configured to be retractable from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 that is built into the terminal body or configured to be detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to enable wireless charging through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

On the other hand, in this drawing, the rear cover 103 is coupled to the rear case 102 to cover the battery 191 to limit the separation of the battery 191 and protect the battery 191 from external shocks and foreign substances. It is exemplifying. When the battery 191 is configured to be detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

An accessory that protects the exterior of the mobile terminal 100 or assists or expands the function of the mobile terminal 100 may be added to the mobile terminal 100. An example of such an accessory may be a cover or a pouch that covers or accommodates at least one surface of the mobile terminal 100. The cover or pouch may be configured to interlock with the display unit 151 to expand functions of the mobile terminal 100. Another example of an accessory may be a touch pen for assisting or extending a touch input to a touch screen.

3 is a view conceptually showing a cross section of a cover plate 300 according to an embodiment of the present invention.

The cover plate 300 according to an embodiment of the present invention may include a base plate layer 310, an adhesive layer 320, a decoration film layer 330, and a shielding printing layer 340.

The base plate layer 310 according to an embodiment may be disposed on the front or rear surface of the mobile terminal to form the exterior of the mobile terminal, and may serve as a skeleton for protecting various parts embedded in the mobile terminal. One surface of the base plate layer 310 may refer to a surface that directly contacts a user as an outer surface of the mobile terminal, and the other surface may refer to a surface facing an internal space in which various parts of the mobile terminal are arranged. The base plate layer 310 may be formed of a plastic composite material that is light and capable of securing strength of a certain level or higher. For example, it may be formed of a composite material of PC (polycarbonate) and PMMA (poly methyl methacrylate). A curved portion having a predetermined radius of curvature may be formed on at least a portion of the edge of the base plate layer 310. The curved portion may be formed by bending the corners of the base plate layer 310, and the appearance of the mobile terminal may be continuously formed to improve aesthetics and provide a stable and soft grip. The base plate layer 310 according to an embodiment may be formed within a range of, for example, 0.55 to 0.8t.

The adhesive layer 320 according to an embodiment may serve to couple the decoration film layer 330 to be described later to the other surface of the base plate. The adhesive layer 320 may be, for example, a pressure sensitive adhesive (PSA) or an optical clear adhesive (OCA). The adhesive layer 320 may be formed of a material in which adhesiveness is activated while being cured by a specific external stimulus in the state of being a liquid non-adhesive material. For example, the external stimulus may be irradiated with ultraviolet rays, and may be formed to a thickness of about 12 μm.

The decoration film layer 330 according to an embodiment may include a shape layer or a color layer. The shape layer according to an exemplary embodiment is an area representing a three-dimensional pattern, and various types of patterns may be formed according to a user's perspective. The three-dimensional pattern is not necessarily processed on the shape layer according to the exemplary embodiment, and in some cases, it may only serve as a substrate for forming the color layer without a special three-dimensional shape. The shape layer may be formed of a PC (polycarbonate)-based material.

The color layer according to an embodiment may be formed by depositing a metal or an oxide on the shape layer. For example, a metal such as indium or an oxide such as titanium oxide, silicon oxide, or aluminum oxide may be deposited to give a specific color. The decoration film layer 330 according to an embodiment may be formed to have a thickness in the range of 14 to 17 μm, for example. The thickness of the decoration film layer 330 may be formed to be within 2.2% based on the thickness of the base plate layer 310. Through this, even if the curved portion is post-processed at the edge of the base plate layer 310, the adhesive layer 320 may not be separated or bent, so that the quality of the curved portion can be maintained smoothly and uniformly.

The shielding printing layer 340 according to an embodiment may be formed on the other surface of the decoration film layer 330. The shielding printing layer 340 may not only form the surface of the other surface of the decoration film layer 330 smoothly, but also may serve to block various parts inside the mobile terminal from being recognized from the outside.

4 is a view conceptually showing a cross section of a cover plate 300 according to another embodiment of the present invention.

The cover plate 300 according to another embodiment of the present invention includes a base plate layer 310, an adhesive layer 320, a decoration film layer 330, a shielding printing layer 340, a hard coating layer 350, and an anti-fingerprint layer. It may include (360). In the cover plate 300 according to another embodiment, the description of the base plate layer 310, the adhesive layer 320, the decoration film layer 330, and the shielding printing layer 340 is the same as described above with reference to FIG. 3. Or it can be omitted as it is similar.

The hard coating layer 350 according to another embodiment may be formed on an upper surface (eg, one surface) of the base plate layer 310 in order to prevent occurrence of scratches or stampings due to external friction or impact. The hard coating layer 350 may be formed by, for example, applying a liquid material having high surface hardness and durability and then curing it through ultraviolet rays or heat, and a resin composition made of acrylic, urethane, or silicone may be used.

The anti-fingerprint layer 360 according to another embodiment may minimize the formation of fingerprints or stains on the base plate layer 310 while the user uses the mobile terminal. The anti-fingerprint layer 360 may be an anti fingerprint (AF) coating layer having water and oil repellency properties. The anti-fingerprint layer 360 may prevent the transfer of oily contaminants caused by a user's manipulation. The anti-fingerprint layer 360 may be applied directly to one surface of the base plate layer 310 or may be applied over the above-described hard coating layer 350.

5 is a flow chart showing a method of manufacturing a cover plate according to an embodiment of the present invention.

A method of manufacturing a cover plate according to an embodiment includes a process of preparing a base plate layer (S401), a process of cutting a decoration film layer (S403), an adhesion process (S407), a shielding printing layer formation process (S409), and a banding process. It may include (S411). In describing a method of manufacturing a cover plate according to an embodiment, each process is sequentially described to aid understanding, but is not necessarily limited to the order. For example, the preparation process of the base plate layer (S401) and the process of cutting the decoration film layer (S403) to be described later may be performed simultaneously or may be performed in a different order.

In the process of preparing the cover base plate layer (S401) according to an exemplary embodiment, it may be a process of disposing a flat base plate layer processed into a predetermined shape in an apparatus for subsequent processing. At this time, the prepared base plate layer may be prepared in a state in which a hard coating layer is formed on one surface in advance.

In the process of cutting the decoration film layer according to an embodiment (S403), it may be cut according to the shape and size of the base plate layer.

In the bonding process S407 according to an embodiment, the base plate layer and the decoration film layer may be bonded with an adhesive and cured to form an adhesive layer.

The process of forming a shielding printing layer (S409) according to an embodiment is a process of performing shielding printing on the other surface of the decoration film layer, and may be repeated several times as necessary.

The bending process S411 according to an embodiment may be a process of forming a curved surface by simultaneously bending a base plate layer, an adhesive layer, a decoration film layer, and a shielding printing layer. By maintaining the thickness of the decoration film layer below a certain ratio compared to the thickness of the base plate layer, the quality of the curved portion can be uniformly maintained even after the bending process (S411).

6 to 7 are flowcharts illustrating a method of manufacturing a cover plate according to various embodiments of the present invention. A method of manufacturing a cover plate according to various exemplary embodiments illustrated in FIGS. 6 and 7 may be described focusing on differences compared to the exemplary embodiment of FIG. 5.

Looking at a method of manufacturing a cover plate according to another embodiment with reference to FIG. 6, the process of preparing the base plate layer (S401), the process of cutting the decoration film layer (S403), the bonding process (S407), the shielding printing layer A forming process (S409), a bending process (S411), a hard coating layer forming process (S413), and a fingerprint protection layer forming process (S415) may be included.

When the manufacturing method of the cover plate according to FIG. 6 is compared with FIG. 5, the process of cutting the decoration film layer (S401), the bonding process (S407), the process of forming the shielding printing layer (S409), and the bending process (S411) are the same. Or similar.

Looking at the process of preparing the base plate layer according to FIG. 6 (S401), the process of disposing a flat base plate layer processed in a preset shape in a device for subsequent processing is the same, but the hard coating layer is in an unformed state. There may be a difference in that. The non-formed hard coating layer may be formed on one surface of the base plate layer through the process of separately forming a hard coating layer (S413) after the bending process (S411). Additionally, the process of forming the anti-fingerprint layer (S415) may be formed by curing a solution in which a solution for preventing fingerprints is applied on the hard coating layer.

Looking at a method of manufacturing a cover plate according to another embodiment with reference to FIG. 7, a process of preparing a base plate layer (S501), a process of cutting a decoration film layer (S503), a process of forming a shielding printing layer (S505), It may include an adhesion process (S507) and a banding process (S509).

When the manufacturing method of the cover plate according to FIG. 7 is compared with FIG. 5, specific details performed in each process may be the same or similar, but there may be a change in the order.

For example, after the process of cutting the decoration film layer (S503), the process of first forming a shielding printed layer on the other surface of the decoration film layer without first bonding to the base plate layer (S503), and then the bonding process (S507) You can proceed. If the cover plate is manufactured in a state in which the shielding printing layer is formed on the other side of the decoration film in advance, the process cycle can be shortened and productivity can be improved.

It is obvious to a person skilled in the art that the present invention can be embodied in other specific forms within the scope not departing from the spirit and essential features of the present invention.

The above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

300: cover plate 310: base plate layer
320: adhesive layer 330: decoration film layer
340: shielding printing layer 350: hard coating layer
360: anti-fingerprint layer

Claims (10)

A base plate layer forming an external shape of the mobile terminal, one surface exposed to the outside, and including a curved portion at a corner portion;
An adhesive layer having one surface bonded to the other surface of the base plate layer, formed of a transparent material, and generating adhesive force by a specific external stimulus; And
Including; one surface is bonded to the other surface of the adhesive layer, a decoration film layer including a color pattern or a shape pattern; and
The base plate layer is a plastic composite material, and the curved portion is formed by bending deformation after laminating the adhesive layer and the decoration film layer on the base plate layer. The method of claim 1,
The cover plate of the mobile terminal further comprising a; shielding printing layer formed on the other surface of the decoration film layer. The method of claim 2,
The cover plate of the mobile terminal, characterized in that when the adhesive layer is exposed to ultraviolet rays, adhesive force is generated. The method of claim 3,
The thickness of the decoration film layer is a cover plate of the mobile terminal formed within 2.2% of the thickness of the base plate layer. The method of claim 4,
The cover plate of the mobile terminal, characterized in that the material of the decoration film layer is at least partially the same as the material of the base plate. The method of claim 1,
The cover plate of the mobile terminal further comprising a; hard coating layer applied to one surface of the base plate layer. The method of claim 6,
The cover plate of the mobile terminal further comprising a; anti-fingerprint layer applied to one surface of the hard coating layer. A base plate layer preparation process of arranging a base plate operated in a predetermined shape in an apparatus for processing;
A decoration film layer cutting process of cutting a decoration film corresponding to the shape of the base plate;
An adhesion process of bonding the other surface of the base plate to one surface of the decoration film;
A process of forming a shielding printed layer to form a shielding printed layer on the other surface of the decoration film; And
A method of manufacturing a cover plate for a mobile terminal comprising: a bending process of bending at least a part of the base plate, the decoration film, and the shielding printing layer according to a preset curvature. The method of claim 8,
After the bending process, a hard coating layer forming process of applying a hard coating layer to one surface of the base plate; further comprising a cover plate manufacturing method for a mobile terminal. The method of claim 9,
After the process of forming the hard coating layer, the process of forming an anti-fingerprint layer by applying an anti-fingerprint layer to one surface of the hard coating layer.

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