KR20010082905A - Method for forming a front case of mobile phone - Google Patents

Method for forming a front case of mobile phone Download PDF

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Publication number
KR20010082905A
KR20010082905A KR1020000008443A KR20000008443A KR20010082905A KR 20010082905 A KR20010082905 A KR 20010082905A KR 1020000008443 A KR1020000008443 A KR 1020000008443A KR 20000008443 A KR20000008443 A KR 20000008443A KR 20010082905 A KR20010082905 A KR 20010082905A
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KR
South Korea
Prior art keywords
front case
housing
transparent resin
key button
film
Prior art date
Application number
KR1020000008443A
Other languages
Korean (ko)
Inventor
유제훈
안경을
Original Assignee
송문섭
주식회사 현대큐리텔
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Publication date
Application filed by 송문섭, 주식회사 현대큐리텔 filed Critical 송문섭
Priority to KR1020000008443A priority Critical patent/KR20010082905A/en
Publication of KR20010082905A publication Critical patent/KR20010082905A/en

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Classifications

    • 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
    • B29C45/14688—Coating articles provided with a decoration
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • 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
    • B29C45/14688—Coating articles provided with a decoration
    • B29C2045/14737—Coating articles provided with a decoration decorations printed on the insert by a digital imaging technique
    • 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
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3431—Telephones, Earphones
    • B29L2031/3437—Cellular phones

Abstract

PURPOSE: A molding method of a front case for a cellular phone is provided to shorten the assembling processes and reduce the manufacturing costs by molding the front case as well as various components kept in the front case integrally through preforming an inserting molding process. CONSTITUTION: Each graphic pattern(10) of a housing and a key button is printed on the print surface of a film(100), and coating material(20) for pattern protecting is coated over the graphic patterns. The film is heat-treated in a frame and molded to the shape of a front case having the outer case of the housing, an irregular portion(30) and an LCD(Liquid Crystal Display) window(40) of the key button. Then, transparent resin(50) is injected into a hollow portion of the film having the same shape as the outer case of the front case. The transparent resin is solidified in each forming portion of the housing, the irregular portion and the LCD window of the key button. The outer case of the front case is made by the transparent resin filling the housing, the key button is formed by the transparent resin in the irregular portion, and the outer case of the LCD window is obtained by the transparent resin in the LCD window. A gap is formed between the transparent resin of the irregular portion and the housing. Thereby, the transparent resin of the irregular portion functions as the key button to be compressed in a range of the gap.

Description

휴대폰의 프론트케이스 성형 방법 {Method for forming a front case of mobile phone}Method for forming a front case of mobile phone}

본 발명은 폴더형휴대폰의 몸체를 이루는 프론트케이스를 성형하는 방법에 관한 것으로, 특히 프론트케이스와 이에 실장되는 키버튼 및 엘시디창을 인서트몰딩법을 이용하여 하나의 필름으로 일체화시킬 수 있도록 된 휴대폰의 프론트케이트 성형 방법에 관한 것이다.The present invention relates to a method for forming a front case constituting the body of a clamshell mobile phone, in particular, the front case and the key buttons and LCD windows mounted thereon of the mobile phone that can be integrated into a single film using the insert molding method A frontkate molding method.

일반적으로, 폴더형휴대폰은, 배터리 등의 부품들이 실장되는 리어케이스에, 키버튼과 엘시디창 등의 각종 부품들이 실장되는 프론트케이스가 회동가능하게 결합되는데, 이 프론트케이스의 회동작용은 휴대폰의 부피를 소형화시키게 됨은 물론 온/오프기능을 수행하게 되는 것이다.In general, a clamshell mobile phone is coupled to a rear case in which components such as a battery are mounted, and a front case in which various components such as a key button and an LCD window are mounted in a rotatable manner. In addition to miniaturization of the on / off function will be performed.

그리고, 폴더형휴대폰의 성형공정을 대략 살펴보면, 프론트케이스는 하우징과 키버튼과 엘시디창 등의 금형을 제작하고 사출성형을 통하여 생산된 성형품들을 생산라인에서 조립하게 되고, 리어케이스는 하우징을 금형으로 제작하고 사출성형한 다음 그 후방측으로 배터리 등의 전장품들을 조립하여 제조하는 방식이 주로 이용되고 있다.In addition, if you look at the molding process of the clamshell mobile phone, the front case manufactures a mold such as a housing, a key button and an LCD window, and the molded products produced through injection molding are assembled in a production line, and the rear case is a housing as a mold. After fabrication, injection molding and the assembly of electrical components such as batteries to the rear side is mainly used.

즉, 폴더형휴대폰의 각 부품들은, 도 1에서와 같이, 필름(100)에 그래픽패턴(110)을 인쇄하는 프린팅단계와, 필름(100)의 그래픽패턴에 코팅액(120)을 도포하는 코팅단계와, 코팅액(120)이 도포된 필름(100)을 형틀에 대고 열을 가하는 포밍단계와, 포밍단계에서 성형된 필름(100)에 사출물(140)을 주입하여 부품을 형성하는 사출단계를 통해 성형된다.That is, each component of the clamshell mobile phone, as shown in Figure 1, the printing step of printing the graphic pattern 110 on the film 100, and the coating step of applying the coating liquid 120 to the graphic pattern of the film 100 And a forming step of applying heat to the mold 100 to which the coating solution 120 is applied to the mold, and an injection step of injecting the injection molding 140 into the formed film 100 in the forming step to form a part. do.

그런데, 프론트케이스를 성형하는 과정에서, 각 부품들 예컨대, 프론트케이스의 하우징과 키버튼과 엘시디창 등은 프린팅단계와 코팅단계와 포밍단계를 통해 금형을 제작한 다음 사출성형을 통해 일일이 제조해야함은 물론 이들 사출성형된 성형품들을 일일이 생산라인에서 조립해야하므로, 작업공정이 번거러울 뿐만 아니라 이로인해 조립비용이 증대됨은 물론, 각 부품들의 금형을 일일이 제작해야하므로 부대비용이 증가하는 문제점이 있었다.By the way, in the process of forming the front case, each of the components, for example, the housing, the key button and the LCD window of the front case to manufacture the mold through the printing step, the coating step and the forming step, and then must be manufactured by injection molding Of course, these injection-molded molded parts must be assembled in a production line one by one, not only a cumbersome work process, but also an increase in assembly costs, as well as an additional cost because each part of the mold must be manufactured one by one.

그리고, 폴더형휴대폰은, 케이스하우징의 설치위치에 키버튼과 엘시디창을 조립하여 형성되므로, 각 부품들의 조립틈새를 통해 수분과 같은 이물질이 투입되는 경우 전장품의 수명을 단축시키게 되는 문제점이 있었다.In addition, since the clamshell mobile phone is formed by assembling the key button and the LCD window at the installation position of the case housing, there is a problem that the life of the electronic device is shortened when foreign substances such as moisture are introduced through assembly gaps of the respective parts.

이에, 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로, 프론트케이스내에 실장되는 각종 부품들과 프론트케이스를 인서트몰딩법으로 일체로 성형하여 조립공수 및 제반경비를 단축시킬 수 있도록 된 휴대폰의 프론트케이트 실링 방법을 제공하는 데에 그 목적이 있다.Accordingly, the present invention has been made in order to solve the above problems, a mobile phone that can be molded integrally with the various parts and the front case mounted in the front case by the insert molding method to reduce the assembly labor and overall cost The purpose is to provide a method of sealing the front kate.

도 1은 일반적인 기술에 따른 인서트몰딩법의 과정을 도시한 순서도,1 is a flow chart showing a process of the insert molding method according to a general technique,

도 2는 본 발명에 따른 휴대폰의 프론트케이스 실링과정을 도시한 순서도,2 is a flow chart illustrating a front case sealing process of a mobile phone according to the present invention;

도 3은 본 발명에 따른 휴대폰의 프론트케이스 키버튼이 실링된 상태를 도시한 도면이다.3 is a view showing a state in which the front case key button of the mobile phone according to the present invention is sealed.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 그래픽패턴 20 : 코팅액10: graphic pattern 20: coating liquid

30 : 요철부 40 : 엘시디창30: uneven portion 40: LCD window

50 : 투명수지50: transparent resin

이하, 본 발명의 일실시예를 상세하게 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in detail.

도 2는 본 발명에 따른 휴대폰의 프론트케이스 실링과정을 도시한 순서도이며, 도 3은 본 발명에 따른 휴대폰의 프론트케이스 키버튼이 실링된 상태를 도시한 도면으로서, 폴더형휴대폰의 프론트케이스를 이루는 하우징과 키버튼과 엘시디창을 인서트몰딩법을 이용하여 하나의 필름으로 성형하여 제조하는 프론트케이스 성형 방법을 제공함에 있어서, 필름(100)의 인쇄면에 하우징과 키버튼의 그래픽패턴(10)을 일체로 인쇄하는 프린팅단계와; 그래픽패턴(10)이 인쇄된 필름(100)의 표면에 그래픽패턴을 보호하는 코팅액(20)을 도포하는 코팅단계와; 코팅액(20)이 도포된 필름(100)의 외표면에 열을 가하여 하우징의 외관과 키버튼의 요철부(30)를 성형하는 포밍단계와; 포밍완료된 필름(100)의 중공부에 엘시디창(40)이 형성되도록 투명수지(50)를 주입하는 사출단계로 구성된다.2 is a flowchart illustrating a front case sealing process of a mobile phone according to the present invention, and FIG. 3 is a view illustrating a state in which a front case key button of a mobile phone according to the present invention is sealed, and forms a front case of a clamshell mobile phone. In providing a front case forming method of forming a housing, a key button, and an LCD window into a single film by using an insert molding method, the graphic pattern 10 of the housing and the key buttons is formed on the printing surface of the film 100. A printing step of integrally printing; A coating step of applying a coating liquid 20 to protect the graphic pattern on the surface of the film 100 on which the graphic pattern 10 is printed; Forming the outer surface of the housing and the uneven portion 30 of the key button by applying heat to the outer surface of the film 100 to which the coating liquid 20 is applied; Consists of the injection step of injecting the transparent resin 50 so that the LCD window 40 is formed in the hollow portion of the foamed film 100.

여기서, 본 발명에 따른 프론트케이스의 외관을 이루는 하우징과, 하우징의 내부공간으로 실장되는 키버튼과, 하우징의 전면부를 이루는 엘시디창은 종래 기술과 동일하므로, 이에 대한 설명을 생략하기로 한다.Here, the housing forming the exterior of the front case according to the present invention, the key button mounted to the inner space of the housing, and the LCD window forming the front portion of the housing are the same as in the prior art, a description thereof will be omitted.

그리고, 프린팅단계는, 종래기술의 프린팅단계와 동일한 과정을 통해 이루어지되, 필름(100)의 인쇄면에 하우징의 그래픽패턴(10)과 키버튼의 그래픽패턴(10)을 일체로 인쇄함과 더불어, 엘시디창(40)의 그래픽패턴(10)을 별도로 인쇄하지 않는 것에 차이점이 있다.And, the printing step is made through the same process as the printing step of the prior art, with the graphic pattern 10 of the housing and the graphic pattern 10 of the key button integrally printed on the printing surface of the film 100 There is a difference in that the graphic pattern 10 of the LCD window 40 is not printed separately.

그리고, 코팅단계는, 그래픽패턴(10)을 보호하기 위한 수단으로 코팅액을 도포하는 단계로서, 종래기술의 코팅단계와 동일한 과정을 통해 이루어지므로, 자세한 설명은 생략하기로 한다.In addition, the coating step is a step of applying the coating liquid as a means for protecting the graphic pattern 10, and is made through the same process as the coating step of the prior art, a detailed description thereof will be omitted.

그리고, 포밍단계는, 종래기술에서 설명했던 포밍단계와 동일한 과정을 통해 이루어지되, 필름(100)을 형틀에 대고 열을 가하여 하우징의 외관과 키버튼의 요철부(30)와 윈도우창의 설치부위를 형성하는 것에 차이점이 있다.And, the forming step is made through the same process as the forming step described in the prior art, by applying heat to the film 100 to the mold to the appearance of the housing and the uneven portion 30 of the key button and the installation portion of the window window There is a difference in forming.

그리고, 사출단계는, 종래기술의 사출단계와 동일한 과정을 통해 이루어지되, 키버튼의 요철부(30)로 주입되는 투명수지(50)와 하우징으로 주입되는 투명수지(50)와의 사이에 공간부를 형성하여, 키버튼의 스트로크가 요철부(30)에 의해 이루어지게 함에 차이점이 있다.And, the injection step is made through the same process as the injection step of the prior art, the space between the transparent resin 50 injected into the uneven portion 30 of the key button and the transparent resin 50 injected into the housing There is a difference in that the stroke of the key button is made by the uneven portion 30.

그리고, 엘시디창(40)은, 프린팅단계에서 그래픽패턴(10)이 인쇄되지 않음과 더불어 사출단계에서 주입되는 투명수지(50)에 의해 성형되므로, 그 외관이 투명한 상태로 유지되는 것이다.In addition, since the LCD window 40 is molded by the transparent resin 50 injected in the injection step while the graphic pattern 10 is not printed in the printing step, the exterior of the LCD window 40 is maintained in a transparent state.

이하, 본 발명에 따른 작용을 첨부된 예시도면을 참고로하여 상세하게 설명하면 다음과 같다.Hereinafter, described in detail with reference to the accompanying drawings illustrating the operation according to the present invention.

먼저, 도 2에서와 같이, 필름(100)의 인쇄면에 하우징의 그래픽패턴(10)과 키버튼의 그래픽패턴(10)을 프린팅한 다음, 그래픽패턴(10)의 상부측에 패턴보호용 코팅액(20)을 도포시킨다.First, as shown in FIG. 2, the graphic pattern 10 of the housing and the graphic pattern 10 of the key button are printed on the printing surface of the film 100, and then the pattern protection coating liquid ( 20) is applied.

그런 다음, 코팅액(20)이 도포된 필름(100)을 형틀에 대고 열을 가하여, 하우징의 외관과 키버튼의 요철부(30)와 엘시디창(40)을 구비한 프론트케이스의 형상으로 성형시킨다.Then, the film 100 coated with the coating liquid 20 is applied to the mold to form a shape of the front case having the exterior of the housing and the uneven portion 30 of the key button and the LCD window 40. .

이어서, 프론트케이스의 외관과 동일한 형상으로 성형된 필름(100)의 중공부내로 투명수지(50)를 주입하면, 하우징의 형성부위와 키버튼의 요철부(30)와 엘시디창(40)의 형성부위로 투명수지(50)가 주입되어 응고된다.Subsequently, when the transparent resin 50 is injected into the hollow portion of the film 100 formed in the same shape as that of the front case, the forming portion of the housing and the uneven portion 30 of the key button and the LCD window 40 are formed. The transparent resin 50 is injected into the site and solidified.

이 과정에서, 하우징으로 주입된 투명수지(50)는 프론트케이스의 외관을 이루게 되고, 요철부(30)로 주입된 투명수지(50)는 키버튼을 이루게 되며, 엘시디창(40)으로 주입된 투명수지(50)는 엘시디창의 외관을 이루게 된다.In this process, the transparent resin 50 injected into the housing forms the appearance of the front case, the transparent resin 50 injected into the uneven portion 30 forms a key button, and injected into the LCD window 40. The transparent resin 50 forms the appearance of the LCD window.

이때, 요철부(30)로 주입된 투명수지(50)와 하우징으로 주입된 투명수지(59)와는 일정크기의 갭이 형성되므로, 요철부(30)로 주입된 투명수지가 키버튼의 기능을 수행하여, 갭에 해당하는 만큼 압축되는 것이다.At this time, since a gap of a certain size is formed between the transparent resin 50 injected into the uneven portion 30 and the transparent resin 59 injected into the housing, the transparent resin injected into the uneven portion 30 functions as a key button. To compress as much as the gap.

물론, 이상에서는 프론트케이스에 키버튼과 엘시디창이 실장되는 경우를 설명하였지만, 리어케이스에 키버큰과 엘시디창이 실장되는 또다른 형태의 휴대폰의 경우에도 동일한 과정을 통해 성형됨은 당연하다.Of course, the above described the case in which the key button and the LCD window are mounted on the front case, but it is natural that the case of another type of mobile phone in which the key cover and the LCD window are mounted on the rear case is formed through the same process.

이상에서 설명한 바와 같이 본 발명에 따른 휴대폰의 프론트케이스 성형 방법에 의하면, 폴더형휴대폰을 이루는 키버튼과 엘시디창이 프론트케이스와 일체화되어 성형되므로, 각 부품들의 조립공정이 단순화되어 부대비용이 절감됨은 물론 전장품내로 수분과 같은 이물질의 침투현상이 원천봉쇄되어 전장품의 수명이 연장되는 효과가 있다.As described above, according to the method for forming the front case of the mobile phone according to the present invention, since the key button and the LCD window forming the clamshell mobile phone are integrally molded with the front case, the assembly process of each component is simplified, thereby reducing the accompanying costs. The penetration of foreign matters such as moisture into the electronics is blocked at the source, thereby extending the life of the electronics.

Claims (1)

폴더형휴대폰의 프론트케이스를 이루는 하우징과 키버튼과 엘시디창을 인서트몰딩법을 이용하여 하나의 필름으로 성형하여 제조하는 프론트케이스 성형 방법을 제공함에 있어서,In providing a front case molding method of manufacturing a housing forming a front case of a clamshell mobile phone, a key button and an LCD window by molding into a single film using an insert molding method, 필름(100)의 인쇄면에 하우징과 키버튼의 그래픽패턴(10)을 일체로 인쇄하는 프린팅단계와; 그래픽패턴(10)이 인쇄된 필름(100)의 표면에 그래픽패턴을 보호하는 코팅액(20)을 도포하는 코팅단계와; 코팅액(20)이 도포된 필름(100)의 외표면에 열을 가하여 하우징의 외관과 키버튼의 요철부(30)를 성형하는 포밍단계와; 포밍완료된 필름(100)의 중공부에 엘시디창(40)이 형성되도록 투명수지(50)를 주입하는 사출단계로 이루어진 것을 특징으로 하는 휴대폰의 프론트케이스 성형 방법.A printing step of integrally printing the graphic pattern 10 of the housing and the key button on the printing surface of the film 100; A coating step of applying a coating liquid 20 to protect the graphic pattern on the surface of the film 100 on which the graphic pattern 10 is printed; Forming the outer surface of the housing and the uneven portion 30 of the key button by applying heat to the outer surface of the film 100 to which the coating liquid 20 is applied; Method of forming a front case of a mobile phone, characterized in that the injection step of injecting a transparent resin 50 so that the LCD window 40 is formed in the hollow portion of the foamed film 100.
KR1020000008443A 2000-02-22 2000-02-22 Method for forming a front case of mobile phone KR20010082905A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020069081A (en) * 2001-02-23 2002-08-29 김영호 Key-pad manufacturing process of Cellular Phone to injection mold
KR20060109621A (en) * 2005-04-18 2006-10-23 (주)썬텔 A fabrication method in as one body of case and key-pad
KR100683553B1 (en) * 2006-09-14 2007-02-16 윤상배 A method for forming a film for a cellular phone outer case and the apparatus thereof
KR100750294B1 (en) * 2006-03-20 2007-08-20 주식회사 엘엔씨테크 Case plate and method for the same
KR100764757B1 (en) * 2006-09-04 2007-10-08 주식회사 미래산업 Case of mobile terminal and manufacturing method thereof
KR100826970B1 (en) * 2007-01-03 2008-05-02 주식회사 엘엔씨테크 Case plate having color transparent window and method for forming the window
KR101258291B1 (en) * 2006-09-11 2013-04-25 엘지전자 주식회사 Portable terminal
CN108501306A (en) * 2018-04-04 2018-09-07 广州凯腾新材料科技有限公司 The method of metal and resin-bonded

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020069081A (en) * 2001-02-23 2002-08-29 김영호 Key-pad manufacturing process of Cellular Phone to injection mold
KR20060109621A (en) * 2005-04-18 2006-10-23 (주)썬텔 A fabrication method in as one body of case and key-pad
KR100750294B1 (en) * 2006-03-20 2007-08-20 주식회사 엘엔씨테크 Case plate and method for the same
KR100764757B1 (en) * 2006-09-04 2007-10-08 주식회사 미래산업 Case of mobile terminal and manufacturing method thereof
KR101258291B1 (en) * 2006-09-11 2013-04-25 엘지전자 주식회사 Portable terminal
KR100683553B1 (en) * 2006-09-14 2007-02-16 윤상배 A method for forming a film for a cellular phone outer case and the apparatus thereof
KR100826970B1 (en) * 2007-01-03 2008-05-02 주식회사 엘엔씨테크 Case plate having color transparent window and method for forming the window
CN108501306A (en) * 2018-04-04 2018-09-07 广州凯腾新材料科技有限公司 The method of metal and resin-bonded

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