KR200371070Y1 - Dome sheet of mobile phone for keeping out electrostatic discharge - Google Patents

Dome sheet of mobile phone for keeping out electrostatic discharge Download PDF

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Publication number
KR200371070Y1
KR200371070Y1 KR20-2004-0026613U KR20040026613U KR200371070Y1 KR 200371070 Y1 KR200371070 Y1 KR 200371070Y1 KR 20040026613 U KR20040026613 U KR 20040026613U KR 200371070 Y1 KR200371070 Y1 KR 200371070Y1
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South Korea
Prior art keywords
pcb
dome sheet
mobile phone
assembled
dome
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KR20-2004-0026613U
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Korean (ko)
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강석중
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엘지전자 주식회사
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Priority to KR20-2004-0026613U priority Critical patent/KR200371070Y1/en
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Publication of KR200371070Y1 publication Critical patent/KR200371070Y1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026Details of the structure or mounting of specific components
    • H04M1/0277Details of the structure or mounting of specific components for a printed circuit board assembly
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05FSTATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00Carrying-off electrostatic charges
    • H05F3/02Carrying-off electrostatic charges by means of earthing connections
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0215Grounding of printed circuits by connection to external grounding means
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0254High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
    • H05K1/0257Overvoltage protection
    • H05K1/0259Electrostatic discharge [ESD] protection

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)
  • Telephone Set Structure (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

본 고안은 휴대폰의 정전기 방지용 돔 시트에 관한 것으로, PCB메인과, 상기 PCB메인의 상면에 조립되는 프레임쉴드와, 상기 프레임쉴드의 상면에 조립되는 PCB키패드와, 상기 PCB키패드의 상면에 부착되는 돔 시트를 포함하는 휴대폰에 있어서, 상기 돔 시트는 그 일측단면 혹은 양측단면 일부에 돌출연장형성된 적어도 하나의 접지편을 구비하고, 상기 접지편은 수직절곡되어 상기 PCB메인이 직접 연결 접지되어 구성된다.The present invention relates to an anti-static dome sheet of a mobile phone, a PCB main, a frame shield assembled on the upper surface of the PCB main, a PCB keypad assembled on the upper surface of the frame shield, and a dome attached to the upper surface of the PCB keypad In a mobile phone including a sheet, the dome sheet has at least one ground piece protrudingly formed on one side or a part of both side surfaces thereof, and the ground piece is vertically bent so that the PCB main is directly connected and grounded.

본 고안은 휴대폰에 구비되는 돔 시트의 일부를 연장시켜 PCB메인프레임에 접지시킴으로써 정전기에 의한 내부 부품의 손상 및 불량을 미연에 방지하는 효과를 제공한다.The present invention extends a part of the dome sheet provided in the mobile phone and grounds the PCB mainframe, thereby providing an effect of preventing damage and defects of internal components due to static electricity.

Description

휴대폰의 정전기 방지용 돔 시트{DOME SHEET OF MOBILE PHONE FOR KEEPING OUT ELECTROSTATIC DISCHARGE}Antistatic dome sheet for mobile phone {DOME SHEET OF MOBILE PHONE FOR KEEPING OUT ELECTROSTATIC DISCHARGE}

본 고안은 휴대폰의 정전기 방지용 돔 시트에 관한 것으로, 휴대폰에 내장되는 돔 시트의 일측에 접지부를 형성하여 정전기의 방출을 원활하게 함으로써 실장된 부품손상 및 불량을 방지할 수 있도록 한 휴대폰의 정전기 방지용 돔 시트에 관한 것이다.The present invention relates to an anti-static dome sheet of a mobile phone, and an anti-static dome of a mobile phone which prevents damage and defects of mounted parts by forming a grounding part on one side of the dome sheet embedded in the mobile phone to facilitate discharge of static electricity. It is about a sheet.

통상적으로, 휴대폰은 그 사용시 유발되는 정전기로부터 휴대폰을 보호하기 위해 그 성능을 검사하기 위한 정전방전(이하 "ESD:Electrostatic Discharge"라 함) 테스트를 거치게 된다.Typically, a cell phone is subjected to an electrostatic discharge (hereinafter referred to as "ESD: Electrostatic Discharge") test to check its performance in order to protect the cell phone from static electricity caused by its use.

이러한 ESD 테스트는 보통 8~10kv의 정전기 전압을 침투시키는 접촉방식과 10~15kv의 전압을 침투시키는 비접촉방식이 있다.These ESD tests usually have a contact method that penetrates an electrostatic voltage of 8 to 10 kv and a noncontact method that penetrates a voltage of 10 to 15 kv.

그런데, 도 1의 도시와 같이 휴대폰에 내장되는 돔 시트(10)는 프레임쉴드(20)를 통해 PCB메인(40)에 접지되는 PCB키패드(30)와는 달리 별도의 접지없이 단지 상기 PCB키패드(30)에 부착되는 형태로 마련되기 때문에 정전기 유입시 유입된 정전기가 방출되지 못하고 그 내부에 잔류하게 되어 실장된 부품을 손상시키거나 동작불량을 유발시키게 된다.However, unlike the PCB keypad 30 which is grounded to the PCB main 40 through the frame shield 20, the dome sheet 10 embedded in the mobile phone as shown in FIG. Since it is provided in the form of attachment to the static electricity, the static electricity introduced during the inflow of static electricity is not released and remains in the interior, thereby damaging the mounted components or causing malfunction.

이는 상술한 ESD 테스트를 통해서도 쉽게 확인될 수 있지만 종래에는 이를 효과있게 해결할 수 있는 수단이 제안되지 못하였고, 다만 전자차폐도료를 도포하여 이를 해결하려는 노력들이 시도된 바 있었다.This can be easily confirmed through the above-described ESD test, but conventionally, a means for effectively solving the problem has not been proposed, but efforts have been made to solve this problem by applying an electronic shielding paint.

하지만, 이와 같은 전자차폐도료는 그 도포작업이 어렵고, 번거로울 뿐만 아니라 제조비용이 급격히 상승되는 등의 많은 단점들을 가지고 있었기 때문에 효율적인 대책은 되지 못하였다.However, such an electronic shielding paint has not been an effective solution because it has many disadvantages such as difficult to apply and cumbersome as well as a sharp increase in manufacturing cost.

본 고안은 상술한 바와 같은 종래 기술이 갖는 한계점을 감안하여 이를 해결하고자 창출한 것으로, 매우 간단하면서도 효율적인 구조를 갖추어 돔 시트로 유입된 정전기를 단시간에 방출함으로써 실장된 내부 부품의 손상 및 불량을 예방할 수있도록 한 휴대폰의 정전기 방지용 돔 시트를 제공함에 그 목적이 있다.The present invention was created in view of the limitations of the prior art as described above, and has been developed to solve this problem, and has a very simple and efficient structure to discharge the static electricity introduced into the dome sheet in a short time to prevent damage and defects of the mounted internal components. The object is to provide an anti-static dome sheet for a mobile phone.

도 1은 종래 돔 시트의 조립관계를 보인 분해 사시도,1 is an exploded perspective view showing an assembly relationship of a conventional dome sheet;

도 2는 본 고안에 따른 휴대폰용 돔 시트의 조립관계를 보인 요부 분해 사시도,Figure 2 is an exploded perspective view of the main part showing the assembly relationship of the dome sheet for a mobile phone according to the present invention,

도 3은 본 고안에 따른 휴대폰용 돔 시트의 다른 예를 보인 예시도.Figure 3 is an exemplary view showing another example of the dome sheet for a mobile phone according to the present invention.

♧ 도면의 주요 부분에 대한 부호의 설명 ♧♧ description of the symbols for the main parts of the drawing ♧

10,10'....돔 시트 12,12'....접지편10,10 '.... dome sheet 12,12' .... ground

20....프레임쉴드 30....PCB키패드20 .... Frame Shield 30 ... PCB keypad

40....PCB메인40 .... PCB main

본 고안은 상기한 기술적 과제를 달성하기 위하여, PCB메인과, 상기 PCB메인의 상면에 조립되는 프레임쉴드와, 상기 프레임쉴드의 상면에 조립되는 PCB키패드와, 상기 PCB키패드의 상면에 부착되는 돔 시트를 포함하는 휴대폰에 있어서, 상기 돔 시트는 그 일측단면 혹은 양측단면 일부에 돌출연장형성된 적어도 하나의 접지편을 구비하고, 상기 접지편은 수직절곡되어 상기 PCB메인이 직접 연결 접지된 휴대폰의 정전기 방지용 돔 시트를 제공함에 그 기술적 특징이 있다.In order to achieve the above technical problem, the present invention provides a PCB main body, a frame shield assembled on an upper surface of the PCB main board, a PCB keypad assembled on an upper surface of the frame shield, and a dome sheet attached to an upper surface of the PCB keypad. In the mobile phone comprising a, the dome sheet has at least one ground piece protrudingly formed on one side or a portion of both side cross-section, the ground piece is vertically bent for the antistatic of the mobile phone directly connected to the PCB main ground It is a technical feature to provide a dome sheet.

이하에서는, 첨부도면을 참고하여 본 고안을 보다 상세하게 설명하기로 한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

도 2는 본 고안에 따른 휴대폰용 돔 시트의 조립관계를 보인 요부 분해 사시도이다.Figure 2 is an exploded perspective view of the main portion showing the assembly relationship of the dome sheet for a mobile phone according to the present invention.

도 2에서와 같이, 본 고안 돔 시트(10')는 그 일측단면으로부터 판상의 접지편(12)이 일체로 돌출형성된 구조로 이루어진다.As shown in FIG. 2, the dome sheet 10 ′ of the present invention has a structure in which a plate-shaped ground piece 12 protrudes integrally from one side surface thereof.

상기 접지편(12)은 상기 돔 시트(10')가 PCB키패드(30)에 조립될 때에 PCB메인(40)으로 직접 연결되게 설치됨으로써 돔 시트(10')로 유입된 정전기를 단시간에 상기 PCB메인(40)으로 방출시키기 위해 마련된다.The ground piece 12 is installed to be directly connected to the PCB main 40 when the dome sheet 10 'is assembled to the PCB keypad 30 so that the static electricity introduced into the dome sheet 10' is short-lived. It is provided for discharge to the main 40.

이때, 상기 접지편(12)은 다양한 형상을 가질 수 있으나 도시와 같은 사각형태의 판상이 바람직하며, 충분한 길이를 갖고 연장되어야 한다.In this case, the ground piece 12 may have a variety of shapes, but the rectangular plate shape as shown in the figure is preferable, and should be extended with a sufficient length.

상기 접지편(12)의 적절한 연장길이는 상기 PCB메인(40)에 조립되는 프레임쉴드(20) 및 PCB키패드(30)의 두께를 고려하여 그 두께와 대응되는 길이 혹은 그보다 약간 긴 길이를 갖도록 연장형성함이 바람직하다.The appropriate extension length of the ground piece 12 is extended to have a length corresponding to or slightly longer than the thickness in consideration of the thickness of the frame shield 20 and the PCB keypad 30 assembled to the PCB main 40. It is preferable to form.

또한, 상기 접지편(12)은 도 2에 직접 도시하지는 않았으나 동일 측면상에 다수개 형성될 수도 있고, 그 대향측면상에 대각선 형태 혹은 대향되는 형태로 다수 형성될 수 있음은 물론이다.In addition, although the ground piece 12 is not directly illustrated in FIG. 2, a plurality of ground pieces 12 may be formed on the same side, and a plurality of ground pieces 12 may be formed in a diagonal form or in an opposite form.

도 3은 본 고안 돔 시트(10')에 형성된 또다른 형태의 접지편(12')을 보여준다.3 shows another form of ground piece 12 'formed on the inventive dome sheet 10'.

도 3에 도시된 또다른 형태의 접지편(12')은 상기 돔 시트(10')의 상단면 혹은 하단면에 돌출형성되는 구조이다.Another type of ground piece 12 ′ shown in FIG. 3 is a structure protruding from the top or bottom surface of the dome sheet 10 ′.

상기 접지편(12')은 본 고안 돔 시트(10')가 PCB키패드(30)와 조립될 때 다른 내장 부품들과의 간섭이 일어나지 않는 범위 내에서 그 상단면 혹은 하단면에 형성될 수 있는 것이다.The ground piece 12 'may be formed on the upper or lower surface of the dome sheet 10' when the present invention is assembled with the PCB keypad 30 without causing interference with other internal components. will be.

이러한 구성으로 이루어진 본 고안의 작동관계는 다음과 같다.The working relationship of the present invention made of such a configuration is as follows.

먼저, PCB메인(40)이 구비되고, 상기 PCB메인(40)의 상면에는 프레임쉴드(20)가 조립된다.First, the PCB main 40 is provided, and the frame shield 20 is assembled on the upper surface of the PCB main 40.

이어, 상기 프레임쉴드(20)의 상면에는 돔 시트(10')가 부착된 PCB키패드(30)가 조립되게 된다.Subsequently, the PCB keypad 30 to which the dome sheet 10 'is attached is assembled to the upper surface of the frame shield 20.

이렇게 조립된 PCB키패드(30)는 상기 프레임쉴드(20)에 의해 PCB메인(40)으로 접지된 상태를 유지하게 되므로 정전기에 의한 영향을 거의 받지 않게 된다.The PCB keypad 30 assembled as described above is maintained in a state of being grounded to the PCB main 40 by the frame shield 20 and thus is hardly affected by static electricity.

이때, 본 고안 돔 시트(10')는 상기 PCB키패드(30)와 함께 프레임쉴드(20)에조립 고정되면서 그 일측단면 혹은 양측단면에 돌출형성된 접지편(12,12')을 그 단면으로부터 하방향으로 수직절곡하고, 그 절곡된 단부를 PCB메인(40)에 직접 연결하여 접지시키도록 한다.At this time, the dome sheet 10 'of the present invention is assembled and fixed to the frame shield 20 together with the PCB keypad 30, and the ground pieces 12 and 12' protruding from one end surface or both end surfaces thereof are lowered from the end surface thereof. Vertical bending in the direction, and the bent end is directly connected to the PCB main 40 to ground.

이로써, 상기 돔 시트(10')는 PCB메인(40)에 그라운딩된 상태를 유지하게 되고, 급속한 정전기의 유입시 단시간에 신속하게 이를 상기 PCB메인(40) 측으로 방출시키게 되어 내부 부품을 보호하게 된다.As a result, the dome sheet 10 ′ maintains the grounded state on the PCB main 40, and rapidly discharges it to the PCB main 40 in a short time upon rapid inflow of static electricity, thereby protecting internal components. .

정전방전을 보다 빠르면서 효율적으로 하기 위해서는 내부 부품과의 간섭이 일어나지 않는 범위내에서 많은 개수의 접지편을 만들고, 그들을 모두 PCB메인에 연결하는 것이 바람직하다.In order to make electrostatic discharge faster and more efficient, it is desirable to make a large number of ground pieces within the range where interference with internal components does not occur and connect them all to the PCB main.

이상에서 상세히 설명한 바와 같이, 본 고안은 휴대폰에 구비되는 돔 시트의 일부를 연장시켜 PCB메인프레임에 접지시킴으로써 정전기에 의한 내부 부품의 손상 및 불량을 미연에 방지하는 효과를 제공한다.As described in detail above, the present invention extends a part of the dome sheet provided in the mobile phone and grounds the PCB main frame, thereby providing an effect of preventing damage and defects of internal components due to static electricity.

Claims (1)

PCB메인과, 상기 PCB메인의 상면에 조립되는 프레임쉴드와, 상기 프레임쉴드의 상면에 조립되는 PCB키패드와, 상기 PCB키패드의 상면에 부착되는 돔 시트를 포함하는 휴대폰에 있어서,A mobile phone comprising a PCB main body, a frame shield assembled on an upper surface of the PCB main body, a PCB keypad assembled on an upper surface of the frame shield, and a dome sheet attached to an upper surface of the PCB keypad. 상기 돔 시트는 그 일측단면 혹은 양측단면 일부에 돌출연장형성된 적어도 하나의 접지편을 구비하고, 상기 접지편은 수직절곡되어 상기 PCB메인이 직접 연결 접지된 것을 특징으로 하는 휴대폰의 정전기 방지용 돔 시트.The dome sheet has at least one ground piece protrudingly formed on one side or part of both side surfaces, and the ground piece is vertically bent to prevent the PCB main body from being directly connected to ground.
KR20-2004-0026613U 2004-09-16 2004-09-16 Dome sheet of mobile phone for keeping out electrostatic discharge KR200371070Y1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9814132B2 (en) 2013-12-17 2017-11-07 Samsung Display Co., Ltd. Display device
KR102490120B1 (en) 2022-07-29 2023-01-18 (주)이알코리아 Insert reinforced inspection stairs of bridge inspection facilities and their construction method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9814132B2 (en) 2013-12-17 2017-11-07 Samsung Display Co., Ltd. Display device
US10136513B2 (en) 2013-12-17 2018-11-20 Samsung Display Co., Ltd. Display device
KR102490120B1 (en) 2022-07-29 2023-01-18 (주)이알코리아 Insert reinforced inspection stairs of bridge inspection facilities and their construction method

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