KR20070096175A - The el slim dome key pad that use side terminal - Google Patents

The el slim dome key pad that use side terminal Download PDF

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Publication number
KR20070096175A
KR20070096175A KR1020060025585A KR20060025585A KR20070096175A KR 20070096175 A KR20070096175 A KR 20070096175A KR 1020060025585 A KR1020060025585 A KR 1020060025585A KR 20060025585 A KR20060025585 A KR 20060025585A KR 20070096175 A KR20070096175 A KR 20070096175A
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South Korea
Prior art keywords
dome
sheet
slim
keypad
circuit board
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KR1020060025585A
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Korean (ko)
Inventor
김기두
김민수
오현필
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한국성전(주)
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Priority to KR1020060025585A priority Critical patent/KR20070096175A/en
Publication of KR20070096175A publication Critical patent/KR20070096175A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/704—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by the layers, e.g. by their material or structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/014—LED

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)

Abstract

A slim-dome EL(electro-luminescent) keypad is provided to improve the reliability by using an external terminal for emission of the EL sheet. A slim-dome EL keypad includes a dome sheet(2), an EL sheet(1), and a PCB(printed circuit board)(3). A slim dome is thinner than a metal dome. The slim dome is coupled with the dome sheet. An external terminal(4) is arranged at an upper portion of the EL sheet. Signal-coupling materials are coupled with the PCB. A thickness of the metal dome is 0.25 mm and a clicking feeling of the metal dome is 175gf. A height of a bump included in a key-top is reduced without increasing an erroneous operation rate of the keypad.

Description

외측 단자를 사용한 슬림돔 이엘 키패드{The EL Slim Dome Key Pad That Use Side Terminal}The EL Slim Dome Key Pad That Use Side Terminal}

도 1 외측단자를 사용한 슬림돔 EL 키패드의 조립도1 is an assembly diagram of a slim dome EL keypad using the outer terminal

도 2 일반적인 메탈돔Fig. 2 Typical metal dome

도 3 슬림돔Fig. 3 Slim Dome

도 4 도 1의 단면도4 is a cross-sectional view of FIG.

도 5 EL 돔시트 키패드Fig. 5 EL domesheet keypad

도 6 메탈돔 없이 슬림화된 EL 키패드Figure 6 EL keypad slim without a metal dome

도 7 도 6의 단면도7 is a cross-sectional view of FIG.

도 5는 EL 돔 시트 키패드의 단면구조를 도시한 것이다.Fig. 5 shows a cross sectional structure of an EL dome sheet keypad.

상기의 EL 키패드는 얇고 가벼우며 배면에 점착제가 도포되어 있어 별도의 조치가 없이도 돔(8)이 부착된 상태로 인쇄회로기판(3)에 완전히 밀착되어 있는 장점이 있으나 EL 시트(1)와 돔 시트(2)의 결합된 구조로 이고, 또한 EL 시트(1)와 인쇄회로기판(3)의 사이에 돔 시트(2)가 위치하여 EL 시트(1)에 전원이 인가되기 위하여 외 곽부에 EL 시트(1)과 인쇄회로기판(3)을 연결하여주는 별도의 수단이 필요하여 제품의 슬림화를 위해서는 한계를 지닌다.The EL keypad is thin and light, and adhesive is coated on the back so that the dome 8 is completely attached to the printed circuit board 3 without any action, but the EL sheet 1 and the dome In the combined structure of the sheet 2, and the dome sheet 2 is positioned between the EL sheet 1 and the printed circuit board 3 so that power is applied to the EL sheet 1, It requires a separate means for connecting the sheet (1) and the printed circuit board (3) has a limit for slimming the product.

도 6는 도 5의 EL 돔 시트 키패드를 개량한 메탈 돔 없는 슬림화된 EL 키패드의 단면도이다.6 is a cross-sectional view of the slimmed EL keypad without the metal dome, which is an improvement of the EL dome sheet keypad of FIG.

메탈 돔 없는 슬림화된 EL 키패드는 도전성 물질(110)이 배면에 도포된 EL 시트(1)와 인쇄회로기판(3)과 EL 시트(1)를 결합하기 위한 양면테이프나 접착성 필름(120), 상기의 부자재들이 결합되는 인쇄회로기판(3)으로 구성된다.The slimmed EL keypad without a metal dome includes a double-sided tape or an adhesive film 120 for bonding the EL sheet 1, the printed circuit board 3, and the EL sheet 1 on which the conductive material 110 is coated on the rear surface. It consists of a printed circuit board (3) to which the subsidiary materials are combined.

상기의 EL 시트(1)를 인쇄회로기판(3)과 접합하기 위하여 양면테이프나 접착성 필름(120)을 사용하였고, 인쇄회로기판의 동박부에 양면테이프를 제거(130)하여, EL 시트(1)가 스위치 역할을 하여, 인쇄회로기판의 스위치 부의 동박부(140)를 제어하여, 전기 신호의 온 오프를 가능할 수 있는 공간을 마련하였다.In order to bond the EL sheet 1 to the printed circuit board 3, a double-sided tape or an adhesive film 120 was used, and the double-sided tape was removed from the copper foil of the printed circuit board 130 to thereby form an EL sheet ( 1) serves as a switch to control the copper foil portion 140 of the switch portion of the printed circuit board, thereby providing a space in which the electrical signal can be turned on and off.

EL 시트(1)와 인쇄회로기판(30) 사이에 얇은 양면테이프(120)를 사용하므로, 양면테이프를 제거하여, EL 시트의 내부단자(150)를 사용한 전원공급이 가능하다. 도 7와 같이 인쇄회로기판의 전원단자(160)와 EL 시트의 내부단자(150)를 도전성 접착제(170)로 접착하여 EL 시트에 전원 인가시 안정도를 높인다.Since a thin double-sided tape 120 is used between the EL sheet 1 and the printed circuit board 30, the double-sided tape can be removed to supply power using the internal terminal 150 of the EL sheet. As shown in FIG. 7, the power supply terminal 160 of the printed circuit board and the inner terminal 150 of the EL sheet are bonded to each other with the conductive adhesive 170 to increase stability when the power is applied to the EL sheet.

상기의 메탈돔 없는 EL 키패드는 전기적 신호의 온오프를 위한 간격을 양면 테이프(120)로 마련하였고, EL 시트의 단자(150)를 내부에 위치시켜 기존의 EL 키패드를 개량하여 슬림화를 구현하였지만, 단순한 양면테이프(120)로 공간을 유지하려다 보니 키탑이 결합되었을 때 스위치의 작동시 전기신호의 오동작이 생길 수 있 고, 제품의 수명에도 영향이 있다. 또한 EL 시트(1)와 인쇄회로기판간(3)의 결합시 육안으로 검사가 불가능한 구조로 되어 있어 제품의 신뢰성에도 문제가 있다.The EL keypad without the metal dome is provided with a double-sided tape 120 to provide an interval for turning on and off electrical signals, and the terminal 150 of the EL sheet is positioned inside to improve the existing EL keypad, thereby achieving slimming. When trying to maintain the space with a simple double-sided tape 120, when the keytop is coupled, the operation of the switch may cause an electrical signal malfunction, and also affects the life of the product. In addition, when the EL sheet 1 and the printed circuit board 3 are coupled to each other, the structure cannot be inspected with the naked eye, which causes problems in product reliability.

이에 본 고안은 상기와 같은 문제점을 해결하기 위한 것으로 EL 키패드를 최대한 슬림화 하면서, 클릭시의 안정성을 유지하고, EL 시트의 밝기를 최대한 유지하기 위한 EL 키패드를 개발 하고자 한다.Accordingly, the present invention is to solve the above problems and to develop an EL keypad for maintaining the stability of the EL sheet while maintaining the stability of the EL sheet while making the EL keypad as slim as possible.

상기의 목적을 달성하기 위해서 본 발명의 키패드는 기존의 메탈돔 보다 슬림하게 제작된 슬림돔(11)이 결합된 돔시트(2), 그 상부에는 외측 단자(4)를 사용하기 위하여 제작된 EL 시트(1), 상기 부자재 들이 결합되는 인쇄회로기판(3)으로 구성된다.In order to achieve the above object, the keypad of the present invention has a dome sheet 2 to which a slim dome 11 is manufactured to be slimmer than a conventional metal dome. It consists of a sheet (1), a printed circuit board (3) to which the subsidiary materials are combined.

도 2과 같이 기존 사용 중 인 메탈돔을 측면에서 보면(9) 두께 0.25mm로 보통 약 175gf의 클릭감을 지닌다.As shown in Fig. 2, the metal dome currently in use from the side (9) has a thickness of 0.25mm and usually has a click feeling of about 175 gf.

일반 메탈돔(8)의 두께가 0.25mm이지만 도 3과 같이 슬림돔(11)의 두께는 0.15mm이다. 도 4에서 보면 메탈 돔에서의 0.1mm의 슬림화에 따라 돔의 상부에 위치하여 키탑(14)에 포함된 돌기의 높이가 기존의 키탑에 포함된 돌기보다 낮게 제작되더라도 클릭시 오동작이 줄어들어 전체적인 슬림화가 가능하다.Although the thickness of the general metal dome 8 is 0.25mm, the thickness of the slim dome 11 is 0.15mm as shown in FIG. In FIG. 4, even if the height of the protrusion included in the key top 14 is lower than the protrusion included in the key top 14 due to the slimming of 0.1 mm in the metal dome, the malfunction of the click is reduced, resulting in overall slimming. It is possible.

슬림돔(12)은 일반 메탈돔 보다 두께가 얇게 제작되어 클릭시(13)의 클릭감은 약 50gf로 일반 메탈돔(10)의 클릭시보다 클릭감은 줄어들게 되나 최소한의 복귀력을 가짐으로 스위치의 동작시 오동작을 줄인다.The slim dome 12 is made thinner than the normal metal dome, so the click feeling of the click 13 is about 50 gf, which reduces the click feeling than the click of the normal metal dome 10, but has a minimum return force. Reduce malfunctions.

또한 EL 시트(1)는 외측 단자(4)를 사용하도록 설계되어 있는데, 외측 단자(4)와 인쇄회로기판(3)은 전도성 접착제를 사용하여 결합한다. In addition, the EL sheet 1 is designed to use the outer terminal 4, and the outer terminal 4 and the printed circuit board 3 are bonded using a conductive adhesive.

본 발명의 외측단자(4)는 EL 시트(1)의 외측단자 양 옆으로 외측단자와 인쇄회로기판(3) 사이의 전도성 접착제로 결합할 때 그 결합의 유무를 육안으로 확인 할 수 있는 공간을 포함하여 설계 되어 있다. EL 시트(1)와 인쇄회로기판(3) 사이에 위치하고 있는 돔시트(2)에는 외측단자의 공간보다 크게 공간을 마련하여 EL 시트(1)와 인쇄회로기판(3)의 결합 시 육안으로 검사할 수 있도록 발명 되었다.The outer terminal 4 of the present invention has a space for visually confirming the presence or absence of the coupling when bonding the conductive terminal between the outer terminal and the printed circuit board 3 on both sides of the outer terminal of the EL sheet 1. It is designed to include. The dome sheet 2 located between the EL sheet 1 and the printed circuit board 3 is provided with a space larger than that of the outer terminal to visually inspect when the EL sheet 1 and the printed circuit board 3 are combined. It was invented to help.

이상 설명한 바와 같이 본 고안에 의해 개량된 슬림화된 EL 키패드는 기존의 EL 키패드에 비해 그 두께가 얇고 접점 부위에 안정도를 고려하여 신호의 안정성을 기대할 수 있다.As described above, the slimmed EL keypad improved by the present invention has a thinner thickness than the conventional EL keypad, and stability of a signal can be expected in consideration of stability at a contact point.

또한 슬림화를 위하여 제작된 슬림돔을 사용하여 키패드의 두께를 최소화 시키면서도 제품의 오동작을 방지하고, EL 시트의 발광을 위한 단자부는 외측 단자를 사용하여 신뢰성을 증가시켰다.In addition, by using a slim dome made for slimming, the thickness of the keypad is minimized while preventing malfunction of the product, and the terminal part for emitting light of the EL sheet is increased by using an outer terminal.

Claims (6)

외측 단자를 사용한 EL 시트와, 슬림하게 제작된 슬림돔을 사용한 돔시트와, EL시트와 인쇄회로기판의 결합에 사용되는 전도성 접착제와, 상기의 부자재가 결합되는 인쇄회로기판으로 구성됨을 특징으로 하는 키패드An EL sheet using an outer terminal, a dome sheet using a slimly manufactured dome, a conductive adhesive used for bonding the EL sheet and a printed circuit board, and a printed circuit board to which the subsidiary materials are combined. Keypad 청구항 1에 있어서 외측 단자부를 사용하여 전도성 접착제로 EL 시트에 전원을 공급함에 있어서 외측 단자 주위에 육안으로 검사할 수 있는 공간을 마련함을 특징으로 하는 EL 시트The EL sheet according to claim 1, wherein a space for visual inspection is provided around the outer terminal in supplying power to the EL sheet with a conductive adhesive using the outer terminal portion. 청구항 2를 사용하여 제작된 키패드Keypad made using claim 2 높이가 기존 메탈돔의 스위치보다 낮게 제작된 메탈 슬림돔 스위치Metal slim dome switch made lower than conventional metal dome switch 청구항 4를 사용하여 제작된 돔 시트Dome sheet made using claim 4 청구항 5를 사용하여 제작된 키패드Keypad made using claim 5
KR1020060025585A 2006-03-21 2006-03-21 The el slim dome key pad that use side terminal KR20070096175A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101465640B (en) * 2007-12-18 2012-01-25 比亚迪股份有限公司 Touch key device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101465640B (en) * 2007-12-18 2012-01-25 比亚迪股份有限公司 Touch key device

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