KR20150136358A - Method for fabricating cover of user device using insert mold technique - Google Patents

Method for fabricating cover of user device using insert mold technique Download PDF

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Publication number
KR20150136358A
KR20150136358A KR1020140063749A KR20140063749A KR20150136358A KR 20150136358 A KR20150136358 A KR 20150136358A KR 1020140063749 A KR1020140063749 A KR 1020140063749A KR 20140063749 A KR20140063749 A KR 20140063749A KR 20150136358 A KR20150136358 A KR 20150136358A
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KR
South Korea
Prior art keywords
transparent
case
mold
opaque
point
Prior art date
Application number
KR1020140063749A
Other languages
Korean (ko)
Inventor
강주성
Original Assignee
(주)넥스디스플레이
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Publication date
Application filed by (주)넥스디스플레이 filed Critical (주)넥스디스플레이
Priority to KR1020140063749A priority Critical patent/KR20150136358A/en
Publication of KR20150136358A publication Critical patent/KR20150136358A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Casings For Electric Apparatus (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Disclosed is a method for manufacturing a case including a transparent portion, which passes light provided from a light emitting display apparatus included in a user device, and an opaque pattern portion, formed along an edge of the transparent portion. The method comprises the following steps: inserting a transparent member, used as the transparent portion, into a mold; injecting a heated liquid opaque resin into a mold space formed inside the mold; and forming the pattern portion composed of the cooled opaque resin by cooling the injected opaque resin. To make the pattern portion and the transparent member be mechanically combined, a protrusion portion or a concave portion is formed in an area which is exposed to the mold space on the surface of the transparent member.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a cover for a user's device using an insert mold,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a user equipment cover, and more particularly, to a technique using an insert mold technique.

In the portable user equipment provided with the light emitting display device, a transparent window for protecting the light emitting display device is provided as a part of the case. A portion of the case adjacent to the transparent window may have a color that allows the user to feel a sense of beauty when viewed with the eyes of a person. The portion showing such a color can be referred to as a pattern portion in this specification.

In the conventional technique for forming the pattern portion, a film having a specific color or a pattern may be attached to the outside of the edge of the transparent window after all of the cases are made of glass. In this case, since there is a restriction condition that a specific color or pattern should be attached to one side of the case made of glass, there are restrictions on diversification of aesthetic sense.

Alternatively, in another conventional technique for making the pattern portion, a method of separately fabricating a case outer portion that can be fitted to the transparent window, and then fitting the transparent window to the outer periphery of the case may be used. In this case, there is a disadvantage that the reliability of the mechanical coupling between the case outer portion and the transparent window may deteriorate.

The present invention provides a technique for manufacturing a user's device case that can provide a sense of beauty that was not provided in the prior art. The present invention also provides a technique for increasing the mechanical reliability of the thus manufactured user equipment case.

According to an aspect of the present invention, there is provided a method of manufacturing a case including a transparent portion passing light provided from a light emitting display device included in a user equipment and an opaque pattern portion formed along an edge of the transparent portion. The method includes the steps of: inserting a transparent member used as the transparent portion into a mold; Injecting a heated liquid opaque resin into a mold space formed in the mold; And cooling the injected opaque resin to form a pattern portion composed of the cooled opaque resin. At this time, protrusions or recesses are formed in a part of the surface of the transparent member exposed to the mold space so that the pattern unit and the transparent member can be mechanically coupled.

At this time, protrusions may be formed on a portion of the surface of the base transparent member that is exposed to the mold space.

Wherein the transparent portion includes the main body and the protrusion formed at an edge of the main body, wherein a width of a first point of the protrusion is greater than a width of a second point of the protrusion, Can be.

At this time, the transparent member may be glass.

At this time, the transparent member may be a synthetic resin, and a coating layer containing silicon dioxide may be formed on the user-side surface of the transparent member.

According to another aspect of the present invention, there is provided a method of manufacturing a case including a transparent portion passing light provided from a light emitting display included in a user's device and an opaque pattern portion formed along an edge of the transparent portion. The method includes the steps of: inserting an opaque member used as the pattern portion into a mold; Injecting a heated liquid transparent resin into a mold space formed in the mold; And cooling the injected transparent resin to form a transparent part composed of the cooled transparent resin. At this time, protrusions or recesses are formed in a portion of the surface of the opaque member exposed to the mold space so that the pattern portion and the transparent portion can be mechanically coupled.

At this time, a portion of the surface of the opaque member exposed to the mold space may have a recess.

At this time, the width of the first point of the concave portion may be smaller than the width of the second point deeper than the first point.

At this time, the case improving method may further include forming a coating layer on a user-side surface of the transparent portion.

According to another aspect of the present invention, there is provided a case including a transparent portion passing light provided from a light emitting display included in a user's device, and an opaque pattern portion formed along an edge of the transparent portion. In this case, the transparent portion includes a main body and a protrusion formed on an edge of the main body, a recess corresponding to the protrusion is formed at an edge of the pattern portion, and the transparent portion and the pattern portion are formed by a combination of the protrusion and the recess As shown in Fig.

The width of the first point of the protrusions may be smaller than the width of the second point of the protrusions farther than the first point. At this time, the pattern portion may have a ring-like shape.

According to the present invention, it is possible to provide a manufacturing technique of a user's device case that can provide a sense of beauty that was not provided in the prior art. Further, it is possible to provide a technique for increasing the mechanical reliability of the thus manufactured user equipment case.

1A shows an electronic device according to an embodiment of the present invention.
FIG. 1B is a cross-sectional view of the case shown in FIG. 1A taken along line A-A '.
Fig. 1C is an enlarged view of the area P1 shown in Fig. 1B.
2 illustrates a method of manufacturing a case of an electronic device according to an embodiment of the present invention.
3 illustrates a method of manufacturing a case of an electronic device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein, but may be implemented in various other forms. The terminology used herein is for the purpose of understanding the embodiments and is not intended to limit the scope of the present invention. Also, the singular forms as used below include plural forms unless the phrases expressly have the opposite meaning.

The present invention relates to a structure of a case of a small electronic device having a display device and a method of manufacturing the same.

The small electronic device may be a portable electronic device such as a laptop computer or a small mobile computer. The portable electronic device can be a smart phone, a cell phone, a wrist watch, a pendant device, a headphone, an earphone, a wireless electronic device, or any other kind of small body device.

The wireless electronic device may be a device such as a cellular phone, a portable computer, a wireless controller, a GPS device, a portable game device, and a portable wireless device such as a media player with wireless communication capability. The wireless electronic device may also be a hybrid device that combines the functions of a plurality of conventional devices. Examples of hybrid portable electronic devices include, but are not limited to, cellular telephones with media player functionality, gaming devices with wireless communication capabilities, cellular telephones with gaming and e-mail functionality, portable devices that receive e-mails and support mobile phone calls, Player function or a device having a web browsing function. The above-described devices are described by way of example.

1A shows an electronic device according to an embodiment of the present invention. The electronic device may be a device having 2G and 3G cellular telephone functions, a data function, a local wireless communication function (ex: IEEE 802.11), an Internet browsing function, an e-mail and calendar function, a game,

The electronic apparatus 100 may be composed of a case including a transparent portion 2, a pattern portion 1, and a rear portion 3, and electronic components disposed in the case.

The transparent part 2 may be made of an optically transparent material to transmit light emitted from a display device (e.g., LCD) disposed inside the electronic device 100 to a user. The transparent part 2 may be made of glass or synthetic resin according to the embodiment. In order to protect the components disposed inside the electronic device 100 from external impact, the case according to one embodiment may be made of tempered glass. In another embodiment, the case may be formed of a synthetic resin having a coating layer formed on the surface thereof, the coating layer including SiO 2 .

In one embodiment of the present invention, the pattern portion 1 is made to have optically opaque characteristics. Such a configuration can be provided for achieving the object to make the boundary between the transparent portion 2 and the pattern portion 1 visually recognized by the display device in an off state, thereby inviting an aesthetic sense. In addition, such a configuration may be provided to prevent light scattering phenomenon in an undesired region, i.e., an outer region of the transparent portion 2, when the display device is turned on.

FIG. 1B is a cross-sectional view of the case shown in FIG. 1A taken along line A-A '. The electronic apparatus 100 is provided with a case portion including a pattern portion 1, a transparent portion 2 and a rear portion 3 and a bonding portion 6 including a substance such as OCA in the transparent portion 2. [ A back light unit (BLU) module 8 for supplying light to the LCD module 7, and other necessary components 9, as shown in FIG.

Fig. 1C is an enlarged view of the area P1 shown in Fig. 1B. The transparent portion 2 includes a body 22 and a protrusion 21 formed along the side surface of the body 22. The thickness of the projecting portion 21 is smaller than the thickness of the main body 22. A concave portion (11) is formed along the side surface of the pattern portion (1). The projecting portion 21 and the recessed portion 11 may have a shape corresponding to each other.

The pattern portion 1 and the transparent portion 2 may be coupled to each other by mechanical coupling between the concave portion 11 and the projecting portion 21. [ In order to provide such a mechanical coupling, the protruding portion 21 has a larger width as it goes outward, and the recess 11 has a larger width as it goes deeper. If the pattern portion 1 is a ring-shaped member that is pierced by the area occupied by the transparent portion 2, the pattern portion 1 having the concave portion 11 and the protruding portion 21, Can not be combined with each other after the transparent parts 2 having the transparent part 2 are manufactured separately from each other. Accordingly, in one embodiment of the present invention, an insert mold method may be used in which one of the pattern unit 1 and the transparent unit 2 is inserted into a mold and the other is fabricated by a molding technique.

At this time, when the area P2 is viewed from the 'observer side' to the 'inside of the device', the area P2 has a color of the pattern part 1. This is because the convex portion 21 is formed on the side surface of the transparent portion 2 having the transparent characteristic and the concave portion 11 is formed on the side surface of the pattern portion 1 having the opaque characteristic Can be easily understood.

2 illustrates a method of manufacturing a case of an electronic device according to an embodiment of the present invention.

First, the transparent portion 2 shown in Fig. 2 (a) is provided. At this time, a protruding portion 21 is formed at the edge of the transparent portion 2.

Next, as shown in Fig. 2 (b), the transparent portion 2 is mounted in the mold 42 including the space to which the transparent portion 2 is to be mounted and the space 10 into which the thermoplastic resin can be injected . The mold 42 may surround the transparent portion 2 in the mold space.

And a pelletized thermoplastic material may be fed to the hopper 46. [ The thermoplastic material may be a material that exhibits a color that is not transparent when solidified. The thermoplastic material can then be gravity fed into the screw-type plunger 48 (or injection ram). At this time, the screw-type plunger 48 can be heated by the heating unit 50. The heat generated by the heating unit 50 and the rotation of the screw in the plunger 48 may result in a shearing action as the temperature of the thermoplastic pellet increases. As a result, the particles can be converted into melted plastic. The molten plastic may be pushed into the mold space due to screw rotation within the plunger 48. The mold 42 may include openings into which the nozzles 52 may be inserted, and the nozzles 52 may be inserted into the mold space through the openings. The plunger 48 may push the molten plastic toward the mold space. The molten plastic may be injected at a high enough pressure to completely fill the mold space.

When the mold space is completely filled, the molten plastic can be cooled by the water flowing through the channels formed in the mold 42. The pattern portion 1 can be formed while the plastic solidifies in the mold space. This process can be referred to as insert molding because the thermoplastic resin is injected into the mold space surrounding the insert piece (i.e., the transparent part 2). When the cooling cycle is completed, the mold 42 is disassembled, and the case in which the pattern portion 1 and the transparent portion 2 are combined can be taken out.

In Fig. 2, the transparent layer 2 may be made of glass or synthetic resin. In the case where the transparent layer 2 is made of synthetic resin, the transparent layer 2 may be one produced by another molding process, and a coating layer containing silicon dioxide may be formed on the surface of the user side have.

3 illustrates a method of manufacturing a case of an electronic device according to another embodiment of the present invention.

First, the pattern portion 1 shown in Fig. 3 (a) is provided. At this time, the concave portion 11 is formed at the edge of the pattern portion 1.

Then, as shown in Fig. 3 (b), a pattern portion 1 is placed in a mold 42 'including a space to which the pattern portion 1 is to be mounted and a space 20 into which the thermoplastic resin can be injected ) Can be mounted. The mold 42 can surround the pattern portion 1 in the mold space.

And the pelletized thermoplastic material can be injected into the mold space through the same process as described in Fig. The thermoplastic material may be a transparent material when it is hard.

As shown in FIG. 3 (c), when the same cooling cycle as that described in FIG. 2 is completed, the mold 42 'can be disassembled and the case in which the pattern portion 1 and the transparent portion 2 are combined can be taken out .

3 (d), a coating layer containing SiO 2 may be formed on one side of the transparent portion 2 on the user side to improve the hardness of the surface of the transparent portion 2.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the essential characteristics thereof. The contents of each claim in the claims may be combined with other claims without departing from the scope of the claims.

1: pattern portion
2: transparent part
3: Rear
6: Adhesive (OCA)
7: LCD module (display module)
8: BLU module
10, 20: mold space
11:
21:
22:
42, 42 ': Mold
100: Electronic device

Claims (12)

A method of manufacturing a case including a transparent portion passing light provided from a light emitting display device included in a user device and an opaque pattern portion formed along an edge of the transparent portion,
Inserting a transparent member used as the transparent portion into a mold;
Injecting a heated liquid opaque resin into a mold space formed in the mold; And
Cooling the injected opaque resin to form a patterned portion composed of the cooled opaque resin;
/ RTI >
Wherein a protruding portion or a recessed portion is formed in a portion of the surface of the transparent member that is exposed to the mold space so that the pattern portion and the transparent member can be mechanically coupled to each other.
Case manufacturing method. The case manufacturing method according to claim 1, wherein protrusions are formed on a portion of the surface of the transparent member that is exposed to the mold space. 3. The method of claim 2,
Wherein the transparent portion includes a main body and the protrusion formed at an edge of the main body,
Wherein a width of a first point of the protrusions is smaller than a width of a second point of the protrusions farther than the first point in the body.
Case manufacturing method. The case manufacturing method according to claim 1, wherein the transparent member is glass. The case manufacturing method according to claim 1, wherein the transparent member is a synthetic resin, and a coating layer containing silicon dioxide is formed on a user-side surface of the transparent member. A method of manufacturing a case including a transparent portion passing light provided from a light emitting display device included in a user device and an opaque pattern portion formed along an edge of the transparent portion,
Inserting an opaque member used as the pattern portion into a mold;
Injecting a heated liquid transparent resin into a mold space formed in the mold; And
Cooling the injected transparent resin to form a transparent part composed of the cooled transparent resin;
/ RTI >
Wherein a protruding portion or a concave portion is formed in a portion of the surface of the opaque member exposed to the mold space so that the pattern portion and the transparent portion can be mechanically coupled,
Case manufacturing method. The case manufacturing method according to claim 6, wherein a portion of the surface of the opaque member that is exposed to the mold space is formed with a concave portion. 8. The method of claim 7, wherein the width of the first point of the recess is less than the width of the second point deeper than the first point. 7. The method of claim 6, further comprising forming a coating layer on a user-side surface of the transparent portion. A case including a transparent portion passing light provided from a light emitting display device included in a user's device and an opaque pattern portion formed along an edge of the transparent portion,
Wherein the transparent portion includes a main body and a protrusion formed at an edge of the main body,
A concave portion corresponding to the projecting portion is formed at an edge of the pattern portion,
Wherein the transparent portion and the pattern portion are mechanically coupled to each other by the engagement of the protruding portion and the concave portion,
The case of your device. The case of claim 10, wherein the width of the first point of the protrusion is less than the width of the second point of the protrusion that is further from the first point than the first point. The case of claim 11, wherein the pattern portion has a ring-like shape.
KR1020140063749A 2014-05-27 2014-05-27 Method for fabricating cover of user device using insert mold technique KR20150136358A (en)

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KR1020140063749A KR20150136358A (en) 2014-05-27 2014-05-27 Method for fabricating cover of user device using insert mold technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140063749A KR20150136358A (en) 2014-05-27 2014-05-27 Method for fabricating cover of user device using insert mold technique

Publications (1)

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KR20150136358A true KR20150136358A (en) 2015-12-07

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