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DE3628781A1 - Film keyboard - Google Patents

Film keyboard

Info

Publication number
DE3628781A1
DE3628781A1 DE19863628781 DE3628781A DE3628781A1 DE 3628781 A1 DE3628781 A1 DE 3628781A1 DE 19863628781 DE19863628781 DE 19863628781 DE 3628781 A DE3628781 A DE 3628781A DE 3628781 A1 DE3628781 A1 DE 3628781A1
Authority
DE
Germany
Prior art keywords
contact
film
conductor tracks
membrane keyboard
keyboard according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE19863628781
Other languages
German (de)
Inventor
Heiner Flohr
Siegfried Vogt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19863628781 priority Critical patent/DE3628781A1/en
Publication of DE3628781A1 publication Critical patent/DE3628781A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01H13/703—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 spacers between contact carrying layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/018—Contacts transparent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/014—Layers composed of different layers; Lubricant in between
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/024—Properties of the substrate
    • H01H2209/038—Properties of the substrate transparent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/046—Properties of the spacer
    • H01H2209/06—Properties of the spacer transparent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/068—Properties of the membrane
    • H01H2209/082—Properties of the membrane transparent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/046—Light emitting elements above switch site
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/06—Reflector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H01H2219/0621—Optical fiber light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/002—Layer thickness

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

A film keyboard having keyboard symbols and/or markings, a control film which is equipped with a plurality of contact conductor tracks, as well as a contact film which likewise has contact conductor tracks. Optical waveguides (optical transmission lines, optical fibre cables) are arranged on that side of the operating film (which is constructed to be translucent) which is opposite the control surface, in order to illuminate the transmissively constructed symbols and/or markings. Light can be emitted from the optical waveguides in order to illuminate the symbols and/or markings. An additional reflector assists the illumination. <IMAGE>

Description

Die Erfindung betrifft eine Folientastatur gemäß Ober­ begriff des Anspruchs 1.The invention relates to a membrane keyboard according to Ober Concept of claim 1.

Bekannt sind Folientastaturen mit beschrifteten Bedien­ feldern und verschiedenartigen Kontaktelementen, z.B. Gummi-, Metall-, Silber-, Kohle-, usw. -brücken. Der Mangel der bis­ her bekannten Ausführungen liegt darin, daß eine ausreichende Erkennbarkeit der Tastatursymbole nur bei reflektivem Auf­ licht gegeben ist.Membrane keyboards with labeled controls are known fields and various types of contact elements, e.g. Rubber-, Metal, silver, coal, etc. bridges. The lack of up Her known designs is that a sufficient The keyboard symbols can only be recognized when reflective opening light is given.

Eine integrierte oder rückseitige Beleuchtung z.B. mit Plexiglasplatten bleibt aufgrund der nichttransparenten im Bedienfeld liegenden Kontaktelemente unwirksam.Integrated or rear lighting e.g. With Plexiglas plates remain in the due to the non-transparent Control elements lying ineffective.

Die der Erfindung zugrundeliegende Aufgabe besteht da­ her darin, eine Folientastatur so auszubilden, daß die Tastatursymbole unter Beibehaltung der bekannten Systemvor­ teile von Folientastaturen (Flexibilität, geringer Raumbe­ darf, farbige Symbole . . .) unabhängig von Außenlicht erkenn­ bar sind.The object underlying the invention is there forth in forming a membrane keyboard so that the Keyboard symbols while maintaining the well-known system parts of membrane keyboards (flexibility, low space allowed, colored symbols. . .) Detect regardless of outside light are cash.

Diese Aufgabe wird durch die Ausbildung gemäß Kenn­ zeichen des Anspruchs 1 gelöst.This task is achieved through training in accordance with Kenn Sign of claim 1 solved.

Durch die erfindungsgemäße Ausbildung wird die Bedien­ barkeit von Tastaturen und Anzeigen insbesondere bei Dunkel­ heit wesentlich verbessert, was vor allem vorteilhaft ist für Notbeleuchtung, Sicherheitseinrichtung, Warnanlagen u.ä. Es wird durch die erfindungsgemäße Ausbildung eine vom Außen­ licht unabhängige Nachtbeleuchtung erhalten. Der Vorteil der geringen Raumbeanspruchung und kostengünstigen Anordnung von Folientastaturen wird im wesentlichen beibehalten, da durch die erfindungsgemäße Ausbildung die Vergrößerung der Stärke der vorliegenden Tastatur vernächlässigbar ist. Sie beträgt lediglich etwa 0,6 mm. Auch die bekannten Systemvorteile der Folientastaturen, wie Flexibilität, die leichte wasser- und staubdichte Ausbildung, uneingeschränkte Design-Möglichkeit, freie Farbgestaltung, geringer Aufwand für Montage, hohe Lebensdauer, werden durch die erfindungsgemäße Ausbildung nicht beeinträchtigt.The training according to the invention, the operator Availability of keyboards and displays, especially in the dark Unit significantly improved, which is above all advantageous for emergency lighting, safety devices, warning systems, etc. The training according to the invention makes it an external one get light independent night lighting. The advantage of low space requirements and inexpensive arrangement of Membrane keyboards is essentially retained as a result of  the inventive training the increase in strength the present keyboard is negligible. It is only about 0.6 mm. The well-known system advantages of Membrane keyboards, such as flexibility, the light water and dustproof training, unlimited design options, free color design, little effort for assembly, high Lifespan, are the training of the invention not affected.

Vorteilhafte und zweckmäßige Weiterbildungen der er­ findungsgemäßen Aufgabenlösung sind in den Unteransprüchen gekennzeichnet.Advantageous and expedient further training of the he The task solution according to the invention are in the subclaims featured.

Die Erfindung soll nachfolgend anhand der beigefügten Zeichnung, in der Ausführungsbeispiele dargestellt sind, näher erläutert werden.The invention will now be described with reference to the accompanying Drawing in which exemplary embodiments are shown, closer are explained.

Es zeigtIt shows

Fig. 1 eine erste Ausführungsform der erfindungsge­ mäßen Folientastatur, Fig. 1 shows a first embodiment of the erfindungsge MAESSEN keypad,

Fig. 2 eine Ansicht A der Folientastatur nach Fig. 1, und Fig. 2 is a view A of the membrane keyboard of FIG. 1, and

Fig. 3 eine zweite Ausführungsform der erfindungsge­ mäßen Folientastatur. Fig. 3 shows a second embodiment of the membrane keyboard according to the invention.

Die in den Fig. 1 und 2 gezeigte Folientastatur 2 weist eine transparente Kontaktfolie 4 auf, auf der Lichtwellen­ leiter 6 mit integriertem Reflektor 8 angeordnet sind. Die Rückseite der Kontaktfolie 4 weist lichtdurchlässige Leiter­ bahnen 10 auf. Darauf kann je nach Ausführung der Folien­ tastatur eine Spacerfolie 12 liegen, die mit einer transpa­ renten Bedienfolie 14 abschließt. Die Bedienfolie 14 be­ sitzt ebenfalls lichtdurchlässige Leiterbahnen 16 auf der Seite, die der Spacerfolie 12 oder der Kontaktfolie 4 zuge­ kehrt ist.The key sheet 2 shown in Figs. 1 and 2 comprises a transparent contact foil 4, conductor on the light waves 6 are arranged with an integrated reflector 8. The back of the contact sheet 4 has translucent conductor tracks 10 . Depending on the design of the membrane keyboard, there may be a spacer membrane 12 which ends with a transparent operating membrane 14 . The operating film 14 also sits translucent conductor tracks 16 on the side facing the spacer film 12 or the contact film 4 .

Eine transmissive Symbolschicht 18 kann auf der Bedien­ folie 14 angebracht sein oder auch zwischen Leiterbahn 16 und Bedienfolie 14, wie dies die Fig. 2 darstellt. Aus den Lichtwellenleitern 6 austretendes Licht kann, unterstützt durch den Reflektor 8, ungehindert durch das transparente System gelangen und die transmissive Symbolschicht 18 zum Leuchten bringen, so daß eine einwandfreie Ablesbarkeit, insbesondere auch bei Nacht, gegeben ist.A transmissive symbol layer 18 can be attached to the control film 14 or between the conductor track 16 and the control film 14 , as shown in FIG. 2. Light emerging from the optical waveguides 6 , supported by the reflector 8 , can pass through the transparent system unhindered and make the transmissive symbol layer 18 glow, so that it can be read perfectly, especially at night.

Die Lichtwellenleiter 6 und die Kontaktfolie 4 können aus einem getrennten oder gemeinsamen elektrischen und opti­ schen Anschlußbereich gespeist werden. Bei einem gemeinsamen Anschlußbereich besteht dieser aus einem Gehäuse 20 mit einem Kontaktelement 22 für die elektrische Verbindung und einem lichtabgebenden Element 24 für die Lichtwellenleiterversorgung, vgl. Fig. 1.The optical waveguide 6 and the contact foil 4 can be fed from a separate or common electrical and optical connection area. In the case of a common connection area, this consists of a housing 20 with a contact element 22 for the electrical connection and a light-emitting element 24 for the optical waveguide supply, cf. Fig. 1.

Die Fig. 3 zeigt eine Folientastatur 26 mit faseropti­ schen Lichtwellenleitern 28, die integriert auf einem Reflek­ tor 30 ausgebildet sind, der vorzugsweise als Folie ausgebil­ det ist und auf seiner Gegenseite die erforderlichen elektri­ schen Leiterbahnen 32 aufweist und damit die Funktion eines Kontaktpartners übernimmt. Fig. 3 shows a membrane keyboard 26 with fiber optic's optical fibers 28 , which are integrated on a reflector gate 30 , which is preferably formed as a film and on its opposite side has the necessary electrical conductor tracks 32 and thus takes over the function of a contact partner.

Über den Lichtwellenleitern 28 befindet sich eine trans­ parente Bedienfolie 34 mit einer aufgebrachten transmissiven Beschriftungsschicht bzw. Symbolschicht 36. Unter dem Reflek­ tor 30 sind eine Spacerfolie 38 und eine Kontaktfolie 40 mit elektrischen Leiterbahnen 41 angebracht.A transparent control film 34 with an applied transmissive labeling layer or symbol layer 36 is located above the optical fibers 28 . Under the reflector gate 30 , a spacer film 38 and a contact film 40 with electrical conductor tracks 41 are attached.

Die Lichtwellenleiter 28 und der vorzugsweise als Folie ausgebildete Reflektor 30 mit den elektrischen Leiterbahnen bzw. die Kontaktfolie 40 werden aus einem gemeinsamen (wie dargestellt) oder getrennten elektrischen und optischen An­ schlußbereich gespeist, der ein Gehäuse 42 mit einem licht­ abgebenden Element 44 für die Versorgung der Lichtwellenleiter und mit einem Kontaktelement 46 für die elektrische Verbin­ dung aufweist.The optical waveguide 28 and the reflector 30, preferably in the form of a film, with the electrical conductor tracks or the contact film 40 are fed from a common (as illustrated) or separate electrical and optical connection region, which comprises a housing 42 with a light-emitting element 44 for the supply the optical waveguide and with a contact element 46 for the electrical connec tion.

Die Elastizität der Lichtwellenleiter gestattet eine den bekannten Prinzipien von Folientastaturen vergleichbare Schaltfunktion, die durch Betätigung (Druck) der Bedienfolie über einen Schalthub die elektrische Kontaktierung ergibt.The elasticity of the optical fibers allows one comparable to the known principles of membrane keyboards Switching function by pressing (pressing) the operating membrane the electrical contact results via a switching stroke.

Das in den Lichtwellenleiter eingegebene Licht kann an den zu beleuchtenden Symbolen der Symbol- bzw. Beschriftungs­ schicht ausgekoppelt werden und diese, unterstützt durch die Wirkung des Reflektors, ungehindert beleuchten, so daß eine einwandfreie Ablesbarkeit, insbesondere bei Nacht, gegeben ist.The light input into the optical fiber can on the symbols of the symbol or label to be illuminated be coupled out and supported by the  Effect of the reflector, illuminate unhindered, so that a perfect readability, especially at night is.

Die Systemvorteile der bekannten Folientastaturen werden beibehalten, da die Lichtwellenleiter mit dem Reflektor nur eine geringfügige Verdickung des Systems bewirken, etwa um 0,6 mm.The system advantages of the known membrane keyboards are maintain as the fiber optic with the reflector only cause a slight thickening of the system, such as around 0.6 mm.

Claims (8)

1. Folientastatur mit Tastatursymbolen und/oder -beschriftun­ gen, mit einer Bedienfolie, die mit mehreren ersten Kontakt­ leiterbahnen ausgestattet ist, denen gegenüber jeweils ge­ teilte zweite Kontaktleiterbahnen einer Kontaktfolie ange­ ordnet sind, dadurch gekennzeichnet, daß auf der zu der Bedienfläche gegenüberliegenden Seite der lichtdurchlässig ausgebildeten Bedienfolie (14, 34) Lichtwellenleiter (6, 28) angeordnet sind, aus denen Licht zur Beleuchtung der transmissiv ausgebildeten Symbole und/ oder Beschriftungen (18, 36) auskoppelbar ist.1. membrane keyboard with keyboard symbols and / or inscriptions gene, with an operating membrane, which is equipped with several first contact conductor tracks, which are arranged opposite each other ge divided second contact tracks, a contact film, characterized in that on the opposite side to the control surface Translucent control film ( 14 , 34 ), optical waveguides ( 6 , 28 ) are arranged, from which light for illuminating the transmissively designed symbols and / or inscriptions ( 18 , 36 ) can be coupled out. 2. Folientastatur nach Anspruch 1, dadurch ge­ kennzeichnet, daß die Lichtwellenleiter (6) auf der den zweiten Kontaktleiterbahnen (10) gegenüberlie­ genden Seite der Kontaktfolie (4) angeordnet sind und daß die Kontaktfolie (4), deren Kontaktleiterbahnen (10) sowie die der Bedienfolie (14) zugeordneten Kontaktleiterbahnen (16) lichtdurchlässig ausgebildet sind.2. Membrane keyboard according to claim 1, characterized in that the optical waveguide ( 6 ) on the second contact conductor tracks ( 10 ) lying opposite side of the contact film ( 4 ) are arranged and that the contact film ( 4 ), their contact conductor tracks ( 10 ) and the the contact conductor tracks ( 16 ) associated with the operating film ( 14 ) are made translucent. 3. Folientastatur nach Anspruch 2, dadurch ge­ kennzeichnet, daß auf der der Kontaktfolie (4) gegenüberliegenden Seite der Lichtwellenleiter (6) ein Reflektor (8) angeordnet ist. 3. A membrane keyboard according to claim 2, characterized in that a reflector ( 8 ) is arranged on the side of the optical waveguide ( 6 ) opposite the contact foil ( 4 ). 4. Folientastatur nach Anspruch 1, dadurch ge­ kennzeichnet, daß die Lichtwellenleiter (28) zwischen der Bedienfolie (34) bzw. einer Symbol- und/oder Beschriftungsschicht (36) und einem Reflektor (30) ange­ ordnet sind, der auf der zu den Lichtwellenleitern (28) gegenüberliegenden Seite mit Kontaktleiterbahnen (32) aus­ gestattet ist, denen gegenüber die Kontaktfolie (40) mit ihren Kontaktleiterbahnen (41) angeordnet ist.4. membrane keyboard according to claim 1, characterized in that the optical waveguide ( 28 ) between the operating film ( 34 ) or a symbol and / or lettering layer ( 36 ) and a reflector ( 30 ) are arranged on the to Optical waveguides ( 28 ) opposite side with contact conductor tracks ( 32 ) from which the contact film ( 40 ) with its contact conductor tracks ( 41 ) is arranged. 5. Folientastatur nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der Reflektor (8, 30) als Folie ausgebildet ist.5. membrane keyboard according to claim 3 or 4, characterized in that the reflector ( 8 , 30 ) is designed as a film. 6. Folientastatur nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kon­ takt- und/oder Bedienfolie aus Kunststoff oder Glas besteht.6. membrane keyboard according to one of the preceding claims, characterized in that the Kon tact and / or control film made of plastic or glass. 7. Folientastatur nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kon­ taktleiterbahnen transparente, stromleitende Schichten sind.7. membrane keyboard according to one of the preceding claims, characterized in that the Kon tact conductor tracks are transparent, current-conducting layers. 8. Folientastatur nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zur Spei­ sung der Lichtwellenleiter und der Kontaktleiterbahnen ein gemeinsames Anschlußelement vorgesehen ist, das ein Gehäuse (20) mit einem Kontaktelement (22) für die elektrische und mit einem lichtabgebenden Element (24) für die optische Spei­ sung aufweist.8. Membrane keyboard according to one of the preceding claims, characterized in that a common connecting element is provided for SpeI solution of the optical waveguide and the contact conductor tracks, which has a housing ( 20 ) with a contact element ( 22 ) for the electrical and with a light-emitting element ( 24 ) for the optical feed.
DE19863628781 1985-08-27 1986-08-25 Film keyboard Ceased DE3628781A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863628781 DE3628781A1 (en) 1985-08-27 1986-08-25 Film keyboard

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8524419 1985-08-27
DE19863628781 DE3628781A1 (en) 1985-08-27 1986-08-25 Film keyboard

Publications (1)

Publication Number Publication Date
DE3628781A1 true DE3628781A1 (en) 1987-03-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863628781 Ceased DE3628781A1 (en) 1985-08-27 1986-08-25 Film keyboard

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DE (1) DE3628781A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9012407U1 (en) * 1990-08-30 1992-01-09 Platz, Karl Otto, 5226 Reichshof Pressure switch element
DE4290260C2 (en) * 1991-02-04 1996-03-21 Motorola Inc Keypad device and radio telephone
DE19535160A1 (en) * 1994-09-30 1996-04-04 Tokheim Corp Illuminated switch arrangement
DE29912656U1 (en) 1999-07-27 1999-11-04 Burg-Wächter KG Alfred Lüling, 58540 Meinerzhagen Keyboard for an input unit
EP1028444A2 (en) * 1999-02-12 2000-08-16 Matsushita Electric Industrial Co., Ltd. Portable terminal device
EP1429356A1 (en) * 2002-12-09 2004-06-16 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Foil-type switching element with dielectric layer
DE10310035A1 (en) * 2003-03-06 2004-09-16 Burg-Wächter Kg Device comprising a carrier element with preferably up to 12 keys and/or pressure elements useful for introduction and optical representation of control commands in electronic data processing devices for control of alarm equipment
DE10310230A1 (en) * 2003-03-06 2004-10-07 Burg-Wächter Kg Device for inputting and optically displaying control errors in electronic data processing devices comprises a support element and a background-illuminating display element formed in one-piece from a flexible plastic
EP1722385A1 (en) * 2005-05-13 2006-11-15 Samsung Electronics Co., Ltd. Keypad with light guide layer, keypad assembly and portable terminal
EP1793402A2 (en) 2005-12-05 2007-06-06 Samsung Electronics Co., Ltd. Keypad and method for fabricating same
EP1892737A1 (en) * 2006-08-23 2008-02-27 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Touchpad
WO2009033468A1 (en) * 2007-09-11 2009-03-19 Osram Opto Semiconductors Gmbh Display device and keyboard arrangement
US7543510B2 (en) 2002-12-09 2009-06-09 Ike International Electronics & Engineering S.A. Foil-type switching element with multi-layered carrier foil
DE102008029239B4 (en) * 2008-06-19 2011-11-24 Abb Ag Electric flush-mounted installation device with multiple cover frame

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737697A1 (en) * 1976-08-23 1978-03-02 Hewlett Packard Co KEYBOARD SETUP
US4163883A (en) * 1977-12-30 1979-08-07 Texas Instruments Incorporated Keyboard with illuminated keys
DE2910055A1 (en) * 1978-03-15 1979-09-27 Decca Ltd DEVICE FOR ILLUMINATING A CONTROL PANEL, IN PARTICULAR A KEYBOARD
DE8017828U1 (en) * 1979-07-04 1980-12-04 Fa. Jaeger, Levallois-Perret, Hauts-De-Seine (Frankreich) Device for illuminating the keys of a keypad
DE3045962A1 (en) * 1979-12-07 1981-07-23 Shin-Etsu Polymer Co., Ltd., Tokyo KEYBOARD WITH ILLUMINATED KEYS
DE8510863U1 (en) * 1985-04-13 1985-05-30 Diemer & Fastenrath, 5880 Lüdenscheid Switching foil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737697A1 (en) * 1976-08-23 1978-03-02 Hewlett Packard Co KEYBOARD SETUP
US4163883A (en) * 1977-12-30 1979-08-07 Texas Instruments Incorporated Keyboard with illuminated keys
DE2910055A1 (en) * 1978-03-15 1979-09-27 Decca Ltd DEVICE FOR ILLUMINATING A CONTROL PANEL, IN PARTICULAR A KEYBOARD
DE8017828U1 (en) * 1979-07-04 1980-12-04 Fa. Jaeger, Levallois-Perret, Hauts-De-Seine (Frankreich) Device for illuminating the keys of a keypad
DE3045962A1 (en) * 1979-12-07 1981-07-23 Shin-Etsu Polymer Co., Ltd., Tokyo KEYBOARD WITH ILLUMINATED KEYS
DE8510863U1 (en) * 1985-04-13 1985-05-30 Diemer & Fastenrath, 5880 Lüdenscheid Switching foil

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9012407U1 (en) * 1990-08-30 1992-01-09 Platz, Karl Otto, 5226 Reichshof Pressure switch element
DE4290260C2 (en) * 1991-02-04 1996-03-21 Motorola Inc Keypad device and radio telephone
DE19535160A1 (en) * 1994-09-30 1996-04-04 Tokheim Corp Illuminated switch arrangement
DE19535160C2 (en) * 1994-09-30 1999-02-18 Tokheim Corp Illuminated switch arrangement
EP1028444A2 (en) * 1999-02-12 2000-08-16 Matsushita Electric Industrial Co., Ltd. Portable terminal device
EP1028444A3 (en) * 1999-02-12 2001-11-14 Matsushita Electric Industrial Co., Ltd. Portable terminal device
US6567650B1 (en) 1999-02-12 2003-05-20 Matsushita Electric Industrial Co., Ltd. Portable terminal device
DE29912656U1 (en) 1999-07-27 1999-11-04 Burg-Wächter KG Alfred Lüling, 58540 Meinerzhagen Keyboard for an input unit
US7543510B2 (en) 2002-12-09 2009-06-09 Ike International Electronics & Engineering S.A. Foil-type switching element with multi-layered carrier foil
EP1429356A1 (en) * 2002-12-09 2004-06-16 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Foil-type switching element with dielectric layer
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