WO2007148902A1 - Clavier émettant de la lumière - Google Patents
Clavier émettant de la lumière Download PDFInfo
- Publication number
- WO2007148902A1 WO2007148902A1 PCT/KR2007/002951 KR2007002951W WO2007148902A1 WO 2007148902 A1 WO2007148902 A1 WO 2007148902A1 KR 2007002951 W KR2007002951 W KR 2007002951W WO 2007148902 A1 WO2007148902 A1 WO 2007148902A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- light emittable
- emittable
- keyboard
- membrane
- Prior art date
Links
- 239000012528 membrane Substances 0.000 claims abstract description 41
- 239000004020 conductor Substances 0.000 claims description 7
- 239000000758 substrate Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
-
- 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
- H01H13/83—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 characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2215/00—Tactile feedback
- H01H2215/004—Collapsible dome or bubble
- H01H2215/008—Part of substrate or membrane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/028—Printed information
- H01H2219/03—Printed information in transparent keyboard
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/036—Light emitting elements
- H01H2219/048—Constituting key
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
- H01H2219/056—Diffuser; Uneven surface
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
- H01H2219/066—Lens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2221/00—Actuators
- H01H2221/07—Actuators transparent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2233/00—Key modules
- H01H2233/01—Key modules mounted on laykey
- H01H2233/014—Snap coupling
- H01H2233/016—Snap coupling with limited freedom
Definitions
- the present invention relates to a light emittable keyboard, and more particularly, to a light emittable keyboard wherein lights emitted from lower portions of keys are transmitted through the keys so that the user can identify the keys even in a dark place.
- a keyboard is a device for entering signals into a hardware such as a PC.
- FIG. 1 is a view illustrating a conventional light emittable keyboard.
- the conventional light emittable keyboard 10 includes a substrate 20 with a circuit configured therein to identify positions of keys 40, housings 30 provided with operation portions 35 for transferring signals about the positions of the keys 40 to the substrate 20 when the keys 40 are pressed, the keys 40 fitted to be pressed onto the operation portions 35, and light emittable elements 50 installed at one sides of the housings 30, for emitting lights toward the keys 40 so that the lights can be transmitted through the top faces or side faces of the keys 40.
- the present invention has been made to solve the above-described shortcomings occurring in the prior art, and an object of the present invention is to provide a light emittable keyboard which can allow the user to easily identify keys even in a dark place or at nighttime.
- Another object of the present invention is to provide a light emittable keyboard which can improve outward appearances of light emitting surfaces of keys by uniformly dispersing lights.
- Yet another object of the present invention is to provide a light emittable keyboard which can minimize loss of light emitted by a light emittable element plate.
- the present invention provides a light emittable keyboard, including: a light emittable element for generating light; a membrane positioned at the upper portion of the light emittable element, and provided with a contact point in a position corresponding to the light emittable element; and a key positioned at the upper portion of the membrane to correspond to the contact point, and cooperated with the contact point when pressed.
- the light emittable keyboard includes an elastic member positioned between the membrane and the key, for returning the key to the original position when the key is pressed.
- the elastic member is a rubber.
- the rubber includes a protrusion for pressurizing the contact point in a position corresponding to the contact point.
- the light emittable keyboard includes a plate positioned between the light emittable element and the membrane, for accommodating the light emittable element.
- the plate includes a lens in a position corresponding to the light emittable element.
- the light emittable keyboard further includes a lens positioned between the light emittable element and the membrane to correspond to the light emittable element.
- the contact point is made of a conductor, and provided with a light passing portion for transmitting the light of the light emittable element.
- the membrane includes a first layer provided with a first contact point in a position corresponding to the light emittable element, an insulating layer positioned at the upper portion of the first layer, and provided with a hole in a position corresponding to the first contact point, and a second layer positioned at the upper portion of the insulating layer, and provided with a second contact point in a position corresponding to the hole.
- the present invention also provides a light emittable keyboard, including: a light emittable element plate provided with a light emittable element; a membrane positioned at the upper portion of the light emittable element plate, and provided with a contact point in a position corresponding to the light emittable element; a key positioned at the upper portion of the membrane, and provided with a pressurized portion cooperating with the contact point in a position corresponding to the contact point; a rubber positioned between the membrane and the key, for returning the key to the original position when the key is pressed; and a plate positioned between the light emittable element plate and the membrane, for accommodating the light emittable element.
- the contact point is made of a conductor, and provided with a light passing portion for transmitting the light of the light emittable element.
- the plate includes a lens in a position corresponding to the light emittable element.
- the present invention provides a light emittable keyboard which can allow the user to easily identify the keys even in a dark place or at nighttime.
- the present invention provides a light emittable keyboard which can improve the outward appearances of the light emitting surfaces of the keys by uniformly dispersing the lights.
- the present invention provides a light emittable keyboard which can prevent contamination and loss of the light emittable element plate.
- the present invention provides a light emittable keyboard which can improve the productivity and cut down the cost.
- the present invention provides a light emittable keyboard which can minimize loss of the light emitted by the light emittable element plate.
- FIG. 1 is a view illustrating a conventional light emittable keyboard.
- FIG. 2 is a view illustrating one example of a disassembled state of a light emittable keyboard in accordance with the present invention.
- FIG. 3 is a view illustrating one example of the section of the light emittable keyboard in accordance with the present invention.
- FIG. 4 is a view illustrating one example of a plate provided at the light emittable keyboard in accordance with the present invention.
- FIG. 5 is a view illustrating one example of a membrane provided at the light emittable keyboard in accordance with the present invention.
- FIG. 6 is a view illustrating one example of contact points printed on a second layer of the membrane provided at the light emittable keyboard in accordance with the present invention.
- FIGS. 7 and 8 are views illustrating another examples of the contact points printed on the second layer of the membrane provided at the light emittable keyboard in accordance with the present invention.
- FIG. 9 is a view illustrating one example of a rubber provided at the light emittable keyboard in accordance with the present invention. Mode for the Invention
- FIG. 2 is a view illustrating one example of a disassembled state of the light emittable keyboard in accordance with the present invention
- FIG. 3 is a view illustrating one example of the section of the light emittable keyboard in accordance with the present invention.
- the light emittable keyboard 100 includes a bottom plate 200, a light emittable element plate 300, a plate 400, a membrane 500, a micro control unit 600, a rubber 700, a housing 800 and keys 900.
- the bottom plate 200 provide bases 210 so that the above components can be stacked thereon.
- the bottom plate 200 is a rectangular plate.
- Bolt hoes H for screw assembly are formed at the rear face of the bottom plate 200, legs (not shown) for controlling the gradient of the light emittable keyboard 100 are hinge- connected to the left and right upper portions of the rear face thereof, and legs which are rubber members (not shown) for preventing sliding are fixedly installed at the left and right lower portions of the rear face thereof.
- the light emittable element plate 300 is installed on the bottom plate 200.
- the light emittable element plate 300 includes light emittable elements 320 such as LEDs packaged into a PCB 310.
- the light emittable element plate 300 is connected to the micro control unit 600.
- the light emittable elements 320 constituting the light emittable element plate 300 are packaged to emit lights to the upper portion of the PCB 310.
- the plate 400 is stacked on the light emittable element plate 300, for uniformly dispersing the light generated by the light emittable element plate 300.
- FIG. 4 is a view illustrating one example of the plate 400 provided at the light emittable keyboard 100 in accordance with the present invention, particularly, an enlarged view illustrating a lens 410 provided at the plate 400.
- the plate 400 includes the lenses 410 for dispersing the lights.
- the plate 400 is made of a transparent material to uniformly disperse light and improve light permeability.
- the transparency of the plate 400 may be controlled to adjust the brightness of light.
- convex lenses are used as the lenses 410 to disperse the lights, and provided at the plate 400 to be positioned directly above the light emittable elements 320.
- the lenses 410 are formed at the plate 400 in positions corresponding to the upper portions of the light emittable elements 320.
- domes are formed at the rear face of the plate 400 to cover the light emittable elements 320 packaged into the PCB 310 to protrude therefrom, and the lenses 410 are formed at the centers of the domes to be convex toward the light emittable elements 320.
- the lenses 410 may be formed individually from the plate 400, and mounted at holes provided at the plate 400 in positions corresponding to the light emittable elements 320.
- FIG. 5 is a view illustrating one example of the membrane 500 provided at the light emittable keyboard 100 in accordance with the present invention.
- the membrane 500 which generates signals for identifying characters or symbols of the keys 900 by the movements of the keys 900 is connected to the micro control unit 600.
- the membrane 500 includes a first layer 510, a second layer 520 and an insulating layer 530.
- the first layer 510 is a conductor printed film having first contact points 511 and a first circuit 512.
- the first circuit 512 is formed according to a matrix set to grasp the positions of the first contact points 511, and connects each first contact point 511.
- the first contact points 511, the lenses 410 and the light emittable elements 320 are positioned in lines in the up-down direction.
- the second layer 520 is a conductor printed film having second contact points 521 and a second circuit 522.
- the second circuit 522 is formed according to a matrix set to grasp the positions of the second contact points 521, and connects each second contact point 521.
- the first contact points 511 and the second contact points 521 must be printed to be positioned in lines in the up-down direction at the stacked state.
- a plurality of holes h are formed at the insulating film 530.
- the holes h must be formed to be positioned between the first contact points 511 and the second contact points 521. Accordingly, when the external force does not operate, the first contact points 511 and the second contact points 521 separate from each other, and when the external force operates, the first contact points 511 and the second contact points 521 contact each other.
- the membrane 500 is made of a material with a light passing characteristic. In this embodiment, the membrane 500 is made of a transparent material, except the first circuit 512, the first contact points 511, the second circuit 522 and the second contact points 521.
- FIG. 6 is a view illustrating one example of the second contact points 521 printed on the second layer 520 of the membrane 500 provided at the light emittable keyboard 100 in accordance with the present invention.
- the first contact points 511 printed on the first layer 510 can be configured identically to the second contact points 521 printed on the second layer 520, and thus detailed explanations thereof are omitted.
- the second contact points 521 include light passing portions 523. In this embodiment, each of the light passing portions 523 has a few lines. Conductors are printed so that the lights can pass through the second contact points 521.
- the light passing portions 523 are formed in a circular shape. FIGS.
- FIG. 7 and 8 are views illustrating another examples of the second contact points 521 printed on the second layer 520 of the membrane 500 provided at the light emittable keyboard 100 in accordance with the present invention.
- the light passing portions 523 provided at the second contact points 521 are formed in any one of the linear and radial shapes, and may be formed in various shapes.
- the micro control unit 600 is connected to the light emittable element plate 300, for controlling the light emissions of the light emittable elements 320, and also connected to the membrane 500, for receiving the signals for identifying the characters or symbols of the keys 900 therefrom.
- the micro control unit 600 processes and transmits the signals to a PC.
- the rubber 700 is stacked on the membrane 500, for elastically supporting the keys 900.
- the rubber 700 is made of a polymer synthetic material with a light passing characteristic, and provided with elastic portions 710.
- the elastic portions 710 are formed in a bell shape. Therefore, when the external force is applied to the upper portions of the elastic portions 710, the elastic portions 710 are pressed in the downward direction, and when the external force is removed, the elastic portions 710 return to the original shape.
- the elastic portions 710 are formed directly on the second contact points 521 to correspond to the second contact points 521 in lines in the up-down direction.
- FIG. 9 is a view illustrating one example of the rubber 700 provided at the light emittable keyboard 100 in accordance with the present invention, particularly, an enlarged view illustrating the elastic portion 710 provided at the rubber 700.
- protrusions 711 are provided at the centers of the bell-shaped inner faces of the elastic portions 710 of the rubber 700. Accordingly, when the external force is applied to the upper portions of the elastic portions 710 to press the elastic portions 710, the second contact points 521 and the first contact points 511 can contact each other.
- the housing 800 is stacked on the rubber 700.
- the keys 900 are fitted into the housing 800.
- the housing 800 includes a plate portion 810 and protruding portions 820.
- the plate portion 810 which constitutes the bottom face of the housing 800 is stacked on the region except the elastic portions 710 of the rubber 700.
- the protruding portions 820 are preferably formed in a quadrangular container shape to surround the elastic portions 710 of the rubber 700, when the plate portion 810 is stacked on the rubber 700.
- the protruding portions 820 can be formed in a cylindrical shape.
- hooks 821 are inwardly protruded from the upper portions of the protruding portions 820 with steps, for preventing the separations of the keys 900 fitted into the protruding portions 820.
- each of the keys 900 includes a pressed portion 910, a fitted portion 920 and a pressurized portion 930.
- the pressed portion 910 constitutes the top face of the key 900.
- the peripheral ends of the pressed portion 910 are downwardly inclined so that impurities cannot be inserted into the protruding portion 820 of the housing 800 but dropped to the plate portion 810.
- the character or symbol is engraved on the top face of the pressed portion 910.
- the fitted portion 920 which forms a wall in the downward direction of the pressed portion 910 is fitted into the protruding portion 820.
- a hook 921 is provided at the fitted portion 920 to be hooked on the hook 821 of the protruding portion 820, for preventing the separation of the key 900 when the key 900 moves in the housing 800 in the up-down direction.
- the pressurized portion 930 forms a wall inside the fitted portion 920 in the downward direction of the pressed portion 910.
- the pressurized portion 930 transfers the movement of the key 900 to the rubber 700.
- the pressurized portion 930 contacts the top face of the rubber 700 to precisely transfer the movement of the key 900.
- the keys 900 are made of a material with a light passing characteristic.
- the light emittable elements 320 provided at the light emittable element plate 300, the lenses 410 provided at the plate 400, the first contact points 511 provided at the first layer 510, the holes h provided at the insulating layer 530, the second contact points 521 provided at the second layer 520, the elastic portions 710 provided at the rubber 700, and the keys 900 are arranged in lines in the vertical direction, to thereby transmit and disperse the lights.
- the lights emitted by the light emittable elements 320 are uniformly dispersed through the lenses 410 provided at the plate 400, and transmitted through the membrane 500.
- the light passing portions 523 provided at the contact points 511 and 521 printed on the membrane 500 serve to minimize the reduction of the lights transmitted through the membrane 500.
- the lights transmitted through the membrane 500 are transmitted through the rubber 700, and emitted to the outside through the pressed portions 910 constituting the top faces of the keys 900.
- the keys 900 emit the lights, the user can easily identify the keys 900.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Input From Keyboards Or The Like (AREA)
- Push-Button Switches (AREA)
Abstract
La présente invention concerne un clavier capable d'émettre de la lumière comportant une plaque d'élément capable d'émettre de la lumière et doté d'un élément capable d'émettre la lumière, d'une membrane positionnée à la partie supérieure de la plaque d'élément capable d'émettre de la lumière, et muni d'un point de contact dans une position correspondant à l'élément capable d'émettre de la lumière, une touche positionnée à la partie supérieure de la membrane et dotée d'une partie sous pression coopérant avec le point de contact dans une position correspondant au point de contact, un caoutchouc positionné entre la membrane et la touche pour ramener la touche à la position initiale lorsque la touche est pressée, et une plaque positionnée entre la plaque d'élément capable d'émettre de la lumière et la membrane pour recevoir l'élément capable d'émettre de la lumière.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2006-0054613 | 2006-06-17 | ||
KR1020060054613A KR100830522B1 (ko) | 2006-06-17 | 2006-06-17 | 발광 키보드 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007148902A1 true WO2007148902A1 (fr) | 2007-12-27 |
Family
ID=38833607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2007/002951 WO2007148902A1 (fr) | 2006-06-17 | 2007-06-18 | Clavier émettant de la lumière |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR100830522B1 (fr) |
WO (1) | WO2007148902A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2154699A3 (fr) * | 2008-08-14 | 2010-09-29 | Alps Electric Co., Ltd. | Dispositif de commutation lumineux |
EP2610822A1 (fr) * | 2010-08-27 | 2013-07-03 | GRG Banking Equipment Co., Ltd. | Clavier chiffré anti-espionnage |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101242212B1 (ko) * | 2011-03-31 | 2013-04-11 | 화남전자 주식회사 | 발광되는 키캡을 구비한 키보드 |
TWI475586B (zh) | 2011-10-19 | 2015-03-01 | Acer Inc | 鍵盤模組及其製造方法 |
KR101333600B1 (ko) * | 2012-03-05 | 2013-11-27 | 이형태 | 키보드 |
KR101294997B1 (ko) * | 2012-03-05 | 2013-08-16 | 이형태 | 키보드 |
KR101294998B1 (ko) * | 2012-04-12 | 2013-08-09 | 이형태 | 키보드 |
KR101341338B1 (ko) * | 2012-04-12 | 2013-12-13 | 이형태 | 키보드 |
KR101677183B1 (ko) * | 2016-03-22 | 2016-11-17 | 주식회사 앱코 | 정전용량 무접점 키보드 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020125118A1 (en) * | 2001-02-26 | 2002-09-12 | Shigetaka Douzono | Illuminated keyboard switch |
US6554442B2 (en) * | 2001-06-26 | 2003-04-29 | Shin Jiuh Corp. | Keyboard illumination structure |
KR200325934Y1 (ko) * | 2003-06-11 | 2003-09-06 | 한국성전(주) | 이엘 돔 테이프 키패드 |
JP2004172132A (ja) * | 2000-05-02 | 2004-06-17 | Nokia Mobile Phones Ltd | 携帯用電子デバイスのためのキーパッド及びキーを照明する方法 |
US6860612B2 (en) * | 2001-11-30 | 2005-03-01 | Darfon Electronics Corp | Illuminated keyboard switch structure |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20000000263A (ko) * | 1999-10-02 | 2000-01-15 | 박일의 | 고감촉(高感觸) 일체형(一體形) 투명(透明) 키보드 |
KR20030079885A (ko) * | 2003-09-15 | 2003-10-10 | 박순영 | El 혹은 led 조명을 이용한 다중문자 선택 키보드 스킨 |
KR20070027096A (ko) * | 2005-08-29 | 2007-03-09 | 김영득 | 터치스크린을 이용한 발광하는 플랫키보드 |
KR20070054299A (ko) * | 2005-11-23 | 2007-05-29 | 화남전자 주식회사 | 백라이트 기능을 가진 키보드 |
-
2006
- 2006-06-17 KR KR1020060054613A patent/KR100830522B1/ko not_active IP Right Cessation
-
2007
- 2007-06-18 WO PCT/KR2007/002951 patent/WO2007148902A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004172132A (ja) * | 2000-05-02 | 2004-06-17 | Nokia Mobile Phones Ltd | 携帯用電子デバイスのためのキーパッド及びキーを照明する方法 |
US20020125118A1 (en) * | 2001-02-26 | 2002-09-12 | Shigetaka Douzono | Illuminated keyboard switch |
US6554442B2 (en) * | 2001-06-26 | 2003-04-29 | Shin Jiuh Corp. | Keyboard illumination structure |
US6860612B2 (en) * | 2001-11-30 | 2005-03-01 | Darfon Electronics Corp | Illuminated keyboard switch structure |
KR200325934Y1 (ko) * | 2003-06-11 | 2003-09-06 | 한국성전(주) | 이엘 돔 테이프 키패드 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2154699A3 (fr) * | 2008-08-14 | 2010-09-29 | Alps Electric Co., Ltd. | Dispositif de commutation lumineux |
US8198559B2 (en) | 2008-08-14 | 2012-06-12 | Alps Electric Co., Ltd. | Illuminated push button switch |
EP2154699B1 (fr) | 2008-08-14 | 2015-09-30 | Alps Electric Co., Ltd. | Dispositif de commutation lumineux |
EP2610822A1 (fr) * | 2010-08-27 | 2013-07-03 | GRG Banking Equipment Co., Ltd. | Clavier chiffré anti-espionnage |
EP2610822A4 (fr) * | 2010-08-27 | 2014-05-07 | Grg Banking Equipment Co Ltd | Clavier chiffré anti-espionnage |
US8872047B2 (en) | 2010-08-27 | 2014-10-28 | Grg Banking Equipment Co., Ltd. | Anti-prying encrypted keyboard |
Also Published As
Publication number | Publication date |
---|---|
KR100830522B1 (ko) | 2008-05-21 |
KR20070119976A (ko) | 2007-12-21 |
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