EP1400999A1 - Layered keyboard - Google Patents
Layered keyboard Download PDFInfo
- Publication number
- EP1400999A1 EP1400999A1 EP03019634A EP03019634A EP1400999A1 EP 1400999 A1 EP1400999 A1 EP 1400999A1 EP 03019634 A EP03019634 A EP 03019634A EP 03019634 A EP03019634 A EP 03019634A EP 1400999 A1 EP1400999 A1 EP 1400999A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- antenna
- membrane keyboard
- foils
- membrane
- keyboard
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
-
- 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
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2207/00—Connections
- H01H2207/048—Inductive or infrared coupling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/038—Anti-vandalism
Definitions
- the invention relates to a membrane keyboard consisting of a composite of several superimposed foils, suitable for entering commands electronically device to be controlled.
- Membrane keyboards are known per se from the prior art. They consist of a film composite of several films stacked on top of one another, for example a cover or decorative film on the surface, one or more electrically conductive Switching foils or a switching comb, which has contacts that are at finger pressure be short-circuited to a button formed in the decorative film and thereby a Trigger switching function and one or more spacer foils, which are used for reinforcement serve the film composite.
- the button function can be used with tactile feedback or without tactile feedback be trained.
- tactile feedback the Printed switching comb is short-circuited, for switches with tactile feedback the contact is actuated, for example, via an additional snap disk.
- electroluminescent light sources or light-emitting diodes in the membrane keyboard built-in, for example to provide information about the operating status of a device to which the membrane keyboard is assigned.
- the object of the invention is to develop a membrane keyboard of the type described above so that an even more efficient Control of a coupled device, in particular a device that has a transmitting / receiving device is possible.
- a membrane keyboard of the type described above has an intermediate two of the foils embedded antenna on.
- the antenna can preferably be used as a microwave antenna be carried out, in particular as an "F” or “patch” antenna, as described in Kin-Lu Wong: “Compact And Broadband Microstrip Antenna”, published by Wiley Europe London, 2001.
- the antenna embedded in the membrane keyboard can advantageously be connected via connecting lines be connected to a transceiver, which is part of the to be controlled Device.
- connection lines are provided, for example on a narrow side of the membrane keyboard lead into contacts from where the coupling to the device or the Transmitting / receiving device can be made.
- a conductive one can advantageously be used Base plate of the membrane keyboard or a conductive foil of the membrane keyboard serve.
- Such a keyboard can be used, for example, as a front film for a terminal or another Be assigned to the operator panel and be used to enter commands. You can also Luminescent diodes in the keyboard to display certain operating states of the assigned Device. Furthermore, the keyboard can also be used with electroluminescent foils be equipped to create a night design.
- Antennas of all currently known planar shapes can be used in particular the "F” and "Patch” antennas, as described in the book Kin-Lu Wong: “Compact And Broadband Microstrip Antennas”; published by Wiley Europe London, 2001 are.
- the feed (the "connection") is advantageously carried out in the form of technology the membrane keypads known “Tails”, which are used for feeding the microwave antennas can be changed in the embodiment of a microstripline and with the HF-technically favorable adjustments (e.g. base resistance) can be.
- the membrane keypads known “Tails” which are used for feeding the microwave antennas can be changed in the embodiment of a microstripline and with the HF-technically favorable adjustments (e.g. base resistance) can be.
- the antenna connected transmitter / receiver device executed on a flexible circuit board his.
- This circuit board provided with the transmitting / receiving device is then preferred embedded between two of the foils next to the antenna and via cable routes connected to the device to be controlled.
- the antenna and the transceiver can be placed so close together within the membrane keyboard that none long microwave or RF lines are necessary and thus transmission losses be kept low. Specially adapted microwave or HF-compatible connectors are not required.
- the transceiver can be mounted on the surface with flat, on the flexible circuit board to be arranged components.
- This technology is known to the person skilled in the art as “SMD” (surface mounted devices) technology and therefore need not be explained in more detail here.
Abstract
Description
Die Erfindung bezieht sich auf eine Folientastatur, bestehend aus einem Verbund von mehreren übereinanderliegenden Folien, geeignet zur Befehlseingabe für ein elektronisch anzusteuerndes Gerät.The invention relates to a membrane keyboard consisting of a composite of several superimposed foils, suitable for entering commands electronically device to be controlled.
Folientastaturen sind an sich aus dem Stand der Technik bekannt. Sie bestehen aus einem Folienverbund von mehreren übereinandergeschichteten Folien, beispielsweise einer Deck- oder Dekorfolie auf der Oberfläche, einer oder mehreren elektrisch leitenden Schaltfolien bzw. einem Schaltkamm, der Kontakte aufweist, die bei Fingerdruck auf eine in der Dekorfolie ausgebildete Taste kurzgeschlossen werden und dabei eine Schaltfunktion auslösen und einer oder mehreren Spacerfolien, die zur Verstärkung des Folienverbundes dienen.Membrane keyboards are known per se from the prior art. they consist of a film composite of several films stacked on top of one another, for example a cover or decorative film on the surface, one or more electrically conductive Switching foils or a switching comb, which has contacts that are at finger pressure be short-circuited to a button formed in the decorative film and thereby a Trigger switching function and one or more spacer foils, which are used for reinforcement serve the film composite.
Die Tastenfunktion kann mit taktiler Rückmeldung oder ohne taktile Rückmeldung ausgebildet sein. Bei taktiler Rückmeldung wird durch Druck auf die Schaltfolie der gedruckte Schaltkamm kurzgeschlossen, bei Schaltern mit taktiler Rückmeldung wird der Kontakt beispielsweise über eine zusätzliche Schnappscheibe betätigt.The button function can be used with tactile feedback or without tactile feedback be trained. In the case of tactile feedback, the Printed switching comb is short-circuited, for switches with tactile feedback the contact is actuated, for example, via an additional snap disk.
Bekannt ist auch, Elektrolumineszenz-Lichtquellen oder Leuchtdioden in die Folientastatur einzubauen, um beispielsweise Informationen über Betriebszustände eines Gerätes darzustellen, dem die Folientastatur zugeordnet ist.It is also known to use electroluminescent light sources or light-emitting diodes in the membrane keyboard built-in, for example to provide information about the operating status of a device to which the membrane keyboard is assigned.
Von diesem Stand der Technik ausgehend besteht die Aufgabe der Erfindung darin, eine Folientastatur der vorbeschriebenen Art derart weiterzubilden, daß eine noch effizientere Ansteuerung eines angekoppelten Gerätes, insbesondere eines Gerätes, das eine Sende-/Empfangseinrichtung aufweist, möglich ist.Starting from this prior art, the object of the invention is to develop a membrane keyboard of the type described above so that an even more efficient Control of a coupled device, in particular a device that has a transmitting / receiving device is possible.
Erfindungsgemäß weist eine Folientatastur der vorbeschriebenen Art eine zwischen zwei der Folien eingebettete Antenne auf. Die Antenne kann vorzugsweise als Mikrowellenantenne ausgeführt sein, insbesondere als "F"- oder "Patch"-Antenne, wie sie in Kin-Lu Wong: "Compact And Broadband Microstrip Antenna", Verlag Wiley Europe London, 2001, beschrieben sind. According to the invention, a membrane keyboard of the type described above has an intermediate two of the foils embedded antenna on. The antenna can preferably be used as a microwave antenna be carried out, in particular as an "F" or "patch" antenna, as described in Kin-Lu Wong: "Compact And Broadband Microstrip Antenna", published by Wiley Europe London, 2001.
Die in die Folientastatur eingebettete Antenne kann vorteilhaft über Verbindungsleitungen mit einer Sende-/Empfangseinrichtung verbunden sein, die Bestandteil des anzusteuernden Gerätes ist.The antenna embedded in the membrane keyboard can advantageously be connected via connecting lines be connected to a transceiver, which is part of the to be controlled Device.
Zu diesem Zweck bzw. zur Speisung der Antenne sind zwischen zwei der Folien verlaufende Anschlußleitungen vorgesehen, die beispielsweise an einer Schmalseite der Folientastatur in Kontakte münden, von wo aus die Ankopplung an das Gerät bzw. die Sende-/Empfangseinrichtung vorgenommen werden kann.For this purpose, or for feeding the antenna, there are ends between two of the foils Connection lines are provided, for example on a narrow side of the membrane keyboard lead into contacts from where the coupling to the device or the Transmitting / receiving device can be made.
Als Bezugselektrode (Erde) der Antenne kann vorteilhafterweise eine leitend ausgebildete Grundplatte der Folientastatur oder auch eine leitende Folie der Folientastatur dienen.As a reference electrode (earth) of the antenna, a conductive one can advantageously be used Base plate of the membrane keyboard or a conductive foil of the membrane keyboard serve.
Die Vorteile der Erfindung:
- Kostenersparnis, da Folienantennen mit Hilfe der bereits vorhandenen technologischen Schritte bei der Herstellung von Tastaturfolien, ausschließlich durch Veränderung der Schneidwerkzeuge, realisiert werden können.
- Bluethooth-Antennen, die in eine Tastaturfolie eingebettet sind, können leicht an das Design der übrigen Folie angepaßt werden, sie sind bei entsprechender Gestaltung unsichtbar und geschützt vor mechanischen Einflüssen, sogar vor Vandalismus.
- Bei entsprechender Konstruktion erreichen in Tastaturfolien eingebettete Antennen, insbesondere für Zentimeterwellen wie Bluetooth, jedoch auch für höhere Frequenzbereiche, Richtcharakteristika, die in ihrem Maximum für die elektrische und die magnetische Feldkomponente in Richtung des Bedieners zeigen und damit günstig für die Ausbreitungsbedingungen für z.B. ein Bluethooth-fähiges Notebook, z.B. für Wartungs- und Fehlersuchaufgaben, sind.
- Der elektrische Anschluß der Antennenspeisung kann, wie bei Tastaturfolien üblich und im Herstellungsprozess bereits enthalten, über "Tails" (=Schwänze) erfolgen, die in der Art einer planaren Stripline gestaltet werden können und damit bei entsprechender Gestaltung gute HF-Eigenschaften, wie definierten Wellenwiderstand und geringe parasitäre Abstrahlung aufweisen.
- Nahezu alle der aus der Literatur bekannten Formen von Flächenantennen können mit Hilfe der bei der Tastaturfolienherstellung angewendeten Technologien, insbesondere bei den bekannten technologisch bedingten Toleranzen, zuverlässig hergestellt werden.
- Aufgrund der speziellen Konstruktion von Tastaturfolien ist die Bluethooth-Antenne und das angeschlossene Elektronikmodul in zuverlässiger Weise auch vor elektrostatischer Entladung geschützt.
- Cost savings, since foil antennas can be realized using the existing technological steps in the production of keyboard foils, only by changing the cutting tools.
- Bluethooth antennas, which are embedded in a keyboard membrane, can easily be adapted to the design of the rest of the membrane. With an appropriate design, they are invisible and protected against mechanical influences, even against vandalism.
- With the appropriate design, antennas embedded in keyboard foils, especially for centimeter waves such as Bluetooth, but also for higher frequency ranges, achieve directional characteristics that point towards the operator at their maximum for the electrical and magnetic field components and are therefore favorable for the propagation conditions for a Bluetooth capable notebook, for example for maintenance and troubleshooting tasks.
- The electrical connection of the antenna feed can, as is usual with keyboard foils and already included in the manufacturing process, take place via "tails" (= tails), which can be designed in the manner of a planar stripline and thus, with the appropriate design, good RF properties, such as defined wave resistance and have low parasitic radiation.
- Almost all of the forms of surface antennas known from the literature can be reliably produced with the aid of the technologies used in the production of keyboard foils, in particular in the case of the known technological tolerances.
- Due to the special construction of keyboard foils, the bluetooth antenna and the connected electronic module are reliably protected against electrostatic discharge.
Die Erfindung soll nachfolgend anhand von Ausführungsbeispielen näher erläutert werden. Hierzu zeigen
- Fig.1
- eine Ausführung der Folientastatur mit einer "F"-Antenne,
- Fig.2
- eine Ausführung der Folientastatur mit einer "Patch"-Antenne.
- Fig.1
- a design of the membrane keyboard with an "F" antenna,
- Fig.2
- a version of the membrane keyboard with a "patch" antenna.
Aus Fig.1 und Fig.2 sind beispielhaft zwei Ausgestaltungen der Erfindung dargestellt.1 and 2 show two embodiments of the invention as examples.
Aus den Darstellungen sind Möglichkeiten der Integration einer planaren Antenne, insbesondere einer Mikrowellenantenne für "Bluetooth"- oder andere Datenübertragungsanwendungen, in eine Folienebene einer Tastatur ersichtlich.Options for integrating a planar antenna, in particular, are shown in the illustrations a microwave antenna for "Bluetooth" or other data transmission applications, in a foil layer of a keyboard.
Eine solche Tastatur kann beispielsweise als Frontfolie einem Terminal oder einem anderen Bediengerät zugeordnet sein und zur Befehlseingabe dienen. Außerdem können in die Tastatur Lumineszenzdioden zur Anzeige bestimmter Betriebszustände des zugeordneten Gerätes integriert sein. Weiterhin kann die Tastatur auch mit Elektrolumineszenzfolien zwecks Erzeugung eines Nachtdesigns ausgestattet sein.Such a keyboard can be used, for example, as a front film for a terminal or another Be assigned to the operator panel and be used to enter commands. You can also Luminescent diodes in the keyboard to display certain operating states of the assigned Device. Furthermore, the keyboard can also be used with electroluminescent foils be equipped to create a night design.
Es können Antennen aller derzeit bekannten planaren Formen Anwendung finden, so insbesondere die "F"- und "Patch"-Antennen, wie sie in dem Buch Kin-Lu Wong: "Compact And Broadband Microstrip Antennas"; Verlag Wiley Europe London, 2001 beschrieben sind.Antennas of all currently known planar shapes can be used in particular the "F" and "Patch" antennas, as described in the book Kin-Lu Wong: "Compact And Broadband Microstrip Antennas "; published by Wiley Europe London, 2001 are.
Die Einspeisung (der "Anschluß") erfolgt vorteilhaft in Form der aus der Technologie der Folientastaturen bekannten "Tails", die zur Anwendung bei der Speisung der Mikrowellenantennen in der Ausführungsform einer Microstripline verändert werden kann und mit der HF-technisch günstige Anpassungen (z.B. Fußpunktwiderstand) erreicht werden können. The feed (the "connection") is advantageously carried out in the form of technology the membrane keypads known "Tails", which are used for feeding the microwave antennas can be changed in the embodiment of a microstripline and with the HF-technically favorable adjustments (e.g. base resistance) can be.
Ein weiterer Vorteil ergibt sich hinsichtlich der elektrische Dimensionierung einer in die Tastaturfolie integrierten planaren Antenne. So ist über Rechenmodelle nachgewiesen, daß als Bezugselektrode (Erde) die zumeist metallische Grundplatte der Tastatur genutzt werden kann.Another advantage arises in terms of electrical dimensioning Keyboard membrane integrated planar antenna. So it is proven by means of calculation models that the mostly metallic base plate of the keyboard is used as the reference electrode (earth) can be.
Hierbei ist man nicht auf die in der Tastatur-Technologie fixen Folienstärken der Isolierschichten angewiesen, sondern es ergibt sich die Möglichkeit, über Ausfräsungen in der Trägerplatte und entsprechende dielektrische Einlagen von Kunststoffen mit definierten HF-Eigenschaften (z.B. Dielektrizitätskonstante ε) und Dicken bestimmte Eigenschaften der Antenne gezielt und unabhängig von der angewendeten Folientechnologie zu verändern.Here one is not on the fixed film thickness of the insulating layers in the keyboard technology instructed, but there is the possibility of milling in the carrier plate and corresponding dielectric inserts of plastics with defined RF properties (e.g. dielectric constant ε) and thicknesses certain properties the antenna specifically and regardless of the film technology used to change.
In einer besonders vorteilhaften Ausgestaltung der Erfindung kann die mit der Antenne verbundene Sende-/Empfangseinrichtung auf einer flexiblen Leiterplatte ausgeführt sein. Diese mit der Sende-/Empfangseinrichtung versehene Leiterplatte wird dann bevorzugt neben der Antenne zwischen zwei der Folien eingebettet und über Leitungswege mit dem anzusteuernden Gerät verbunden.In a particularly advantageous embodiment of the invention, the antenna connected transmitter / receiver device executed on a flexible circuit board his. This circuit board provided with the transmitting / receiving device is then preferred embedded between two of the foils next to the antenna and via cable routes connected to the device to be controlled.
Daraus ergibt sich vorteilhaft, daß die Antenne und die Sende-/Empfangseinrichtung innerhalb der Folientastatur so dicht nebeneinander plaziert werden können, daß keine langen Mikrowellen- oder HF-Leitungen notwendig sind und somit Übertragungsverluste gering gehalten werden. Speziell angepaßte Mikrowellen- oder HF-taugliche Steckverbinder sind nicht erforderlich.This advantageously means that the antenna and the transceiver can be placed so close together within the membrane keyboard that none long microwave or RF lines are necessary and thus transmission losses be kept low. Specially adapted microwave or HF-compatible connectors are not required.
Die Sende-/Empfangseinrichtung kann mit oberflächenmontierbaren flachen, auf der flexiblen Leiterplatte anzuordnenden Bauelementen ausgeführt werden. Diese Technologie ist dem Fachmann als "SMD" (surface mounted devices) -Technologie bekannt und muß deshalb hier nicht näher erläutert werden.The transceiver can be mounted on the surface with flat, on the flexible circuit board to be arranged components. This technology is known to the person skilled in the art as "SMD" (surface mounted devices) technology and therefore need not be explained in more detail here.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10244083 | 2002-09-17 | ||
| DE2002144083 DE10244083A1 (en) | 2002-09-17 | 2002-09-17 | keypad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1400999A1 true EP1400999A1 (en) | 2004-03-24 |
Family
ID=31896288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03019634A Withdrawn EP1400999A1 (en) | 2002-09-17 | 2003-09-05 | Layered keyboard |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1400999A1 (en) |
| DE (1) | DE10244083A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514587A (en) * | 2016-01-28 | 2016-04-20 | 重庆邮电大学 | Onboard PCB inverted-F antenna 2.4 GHz radio frequency communication module |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006057546A1 (en) * | 2006-12-06 | 2008-01-31 | Siemens Ag | Operating device for operation of machine tool, production machine or robot, has membrane keyboard with integrated antenna, which is arranged at switching foil of membrane keyboard |
| DE102014105918A1 (en) * | 2014-04-28 | 2015-10-29 | Phoenix Contact Gmbh & Co. Kg | Power supply unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9112597U1 (en) * | 1991-10-10 | 1992-06-11 | Buch Elektronik Gmbh, 3257 Springe, De | |
| EP0701296A1 (en) * | 1994-08-18 | 1996-03-13 | Plessey Semiconductors Limited | Slot antenna |
| US6138050A (en) * | 1997-09-17 | 2000-10-24 | Logitech, Inc. | Antenna system and apparatus for radio-frequency wireless keyboard |
| US20020047804A1 (en) * | 2000-10-09 | 2002-04-25 | Indra Ghosh | Patch antenna for the microwave range |
| US20030080944A1 (en) * | 2001-10-25 | 2003-05-01 | Nobuyuki Takahashi | Wireless keyboard |
-
2002
- 2002-09-17 DE DE2002144083 patent/DE10244083A1/en not_active Withdrawn
-
2003
- 2003-09-05 EP EP03019634A patent/EP1400999A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9112597U1 (en) * | 1991-10-10 | 1992-06-11 | Buch Elektronik Gmbh, 3257 Springe, De | |
| EP0701296A1 (en) * | 1994-08-18 | 1996-03-13 | Plessey Semiconductors Limited | Slot antenna |
| US6138050A (en) * | 1997-09-17 | 2000-10-24 | Logitech, Inc. | Antenna system and apparatus for radio-frequency wireless keyboard |
| US20020047804A1 (en) * | 2000-10-09 | 2002-04-25 | Indra Ghosh | Patch antenna for the microwave range |
| US20030080944A1 (en) * | 2001-10-25 | 2003-05-01 | Nobuyuki Takahashi | Wireless keyboard |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514587A (en) * | 2016-01-28 | 2016-04-20 | 重庆邮电大学 | Onboard PCB inverted-F antenna 2.4 GHz radio frequency communication module |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10244083A1 (en) | 2004-03-25 |
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