DE3320107A1 - Liquid-crystal display having an integrated membrane keyboard - Google Patents
Liquid-crystal display having an integrated membrane keyboardInfo
- Publication number
- DE3320107A1 DE3320107A1 DE19833320107 DE3320107A DE3320107A1 DE 3320107 A1 DE3320107 A1 DE 3320107A1 DE 19833320107 DE19833320107 DE 19833320107 DE 3320107 A DE3320107 A DE 3320107A DE 3320107 A1 DE3320107 A1 DE 3320107A1
- Authority
- DE
- Germany
- Prior art keywords
- crystal display
- liquid crystal
- membrane
- display according
- contact points
- 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
Links
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2217/00—Facilitation of operation; Human engineering
- H01H2217/018—Indication of switch sites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/002—Legends replaceable; adaptable
- H01H2219/01—Liquid crystal
- H01H2219/012—Liquid crystal programmable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/05—Forming; Half-punching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/03—Avoiding erroneous switching
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Flüssigkristallanzeige mit integrierter MembrantastaturLiquid crystal display with integrated membrane keyboard
Die Erfindung betrifft eine Flüssigkristallanzeige mit integrierter Membrantastatur, wobei die Kontaktgabe durch Ausübung eines Druckes an vorbestimmten Stellen einer über der Anzeige befindlichen flexiblen Membran bewirkt wird.The invention relates to a liquid crystal display with an integrated Membrane keyboard, the contact being made by exerting a pressure on predetermined Place a flexible membrane located over the display is effected.
Es ist bekannt, Anzeigeelemente mit Tasten so zu kombinieren, daß der Benutzer bei der Anzeige eines Zustandes, bei dem eine Bedienung erforderlich ist, darauf hingewiesen wird, welche Taste zu betätigen ist. Eine mit einem elektrischen Anzeigeelement versehene Taste für Fernmelde-, insbesondere Fernsprechgeräte ist angegeben in der DE-OS 29 13 894. Dabei ist in der Tastenkappe eine Flüssigkristallanzeige angeordnet, die Je nach Bedeutung der Taste verschiedene Symbole anzeigen kann. Hierbei ist jedoch für jede Taste eine eigene Flüssigkristallanzeige erforderlich, so daß der Vorteil von mehrstelligen Anzeigen mit wechselnden Symbolen in größerer Ausführung nicht genutzt werden kann.It is known to combine display elements with buttons so that the user when displaying a condition in which an operation is required is indicated which key is to be pressed. One with an electric Indicator provided key for telecommunication, in particular telephone devices indicated in DE-OS 29 13 894. There is a liquid crystal display in the key cap which can display different symbols depending on the meaning of the key. However, a separate liquid crystal display is required for each key, so that the advantage of multi-digit displays with changing symbols in larger Execution cannot be used.
Eine andere Kombination von Anzeigeeinrichtungen und Schaltern ist dargestellt in der DE-OS 29 52 033. Diese Baueinheit besteht aus zwei Tastenschaltern, die über eine Leiterplatte mit einer Ziffernanzeige vereinigt sind. Eine derartige Anordnung nimmt relativ viel Raum ein, weil die Größe der Tastenschalter, wie auch beim o.g. Beispiel, die Bauhöhe bestimmt.Another combination of indicators and switches is shown in DE-OS 29 52 033. This unit consists of two key switches, which are combined with a digital display via a circuit board. Such a one Arrangement takes up a lot of space because of the size of the key switches, as well in the above example, the height is determined.
Außerdem ist aus der DE-OS 29 44 304 ein elektrischer Flachachalter bekannt, bei dem die Kontaktgabe durch aufeinander gelegte, mit Leiterbahnen versehene Folien bewirkt wird. Die Leiterbahnen müssen dabei so angeordnet und die Folien so beschaffen sein, daß eine unterhalb des Schalters angeordnete Lichtquelle einen Leuchteffekt bewirken kann. Bei dieser Anordnung wird zwar für den Schalter allein nur eine geringe Bauhöhe benötigt, aber die Lichtquelle erfordert bei dieser Art von Anzeige einen erheblichen Raumbedarf, so daß auch hierbei die Bauhöhe der gesamten Anordnung relativ hoch ist. Bei dieser Anordnung kann nur ein Symbol, das fest an der betreffenden Stelle aufgedruckt ist, durch Beleuchtung seiner Umgebung angezeigt werden.In addition, DE-OS 29 44 304 is an electrical flat switch known, in which the contact is made by superimposed, provided with conductor tracks Foils is effected. The conductor tracks and the foils must be arranged in this way be designed so that a light source arranged below the switch a Can cause luminous effect. With this arrangement, it is true for the switch alone only requires a small overall height, but the light source requires this type of display a considerable amount of space, so that here too the height of the entire Arrangement is relatively high. With this arrangement there can only be one symbol that is permanently attached the location in question is indicated by illuminating its surroundings will.
Die Aufgabe der Erfindung besteht darin, eine Anzeigeeinrichtung zur Darstellung wechselnder Symbole mit zugeordneter Tastatur anzugeben, die eine geringe Bauhöhe aufweist, in einem Block herstellbar ist und allen Anforderungen, die an eine Anzeigeeinrichtung und an eine Tastatur zu stellen sind, gerecht wird.The object of the invention is to provide a display device for Representation of changing symbols with assigned keyboard to indicate that a low Has overall height, can be produced in one block and all the requirements that a display device and a keyboard are to be placed, is fair.
Diese Aufgabe wird durch eine Merkmalskombinetion gelöst, wie sie im Patentanspruch 1 angegeben ist.This problem is solved by a combination of features like them in claim 1 is specified.
Damit wird in vorteilhafter Weise erreicht, daß die Vorzüge einer mehrstelligen Anzeigeeinrichtung mit wechselnden Symbolen beibehalten werden können, ohne daß durch die Tastatur die Bauhöhe der in einem Block herstellbaren Einrichtung wesentlich beeinflußt wird.This is achieved in an advantageous manner that the advantages of a multi-digit display device with changing symbols can be retained, without the height of the device that can be produced in one block by the keyboard is significantly influenced.
Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben. Daraus geht hervor, daß in der Ausführungsform viele Varianten möglich sind, wobei alle Vorteile der Flüssigkristallanzeige mit integrierter Membrantastatur erhalten bleiben.Further developments of the invention are given in the subclaims. It can be seen from this that many variants are possible in the embodiment, wherein get all the advantages of the liquid crystal display with integrated membrane keyboard stay.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand von Zeichnungen näher erläutert. Es zeigt: Fig. 1 eine Draufsicht auf die Flüssigkristallanzeige mit integrierter Membrantastatur Fig. 2 den Querschnitt einer in Mehr-Lagen-Technik aufgebauten Anzeigeeinrichtung mit Tastatur In der Fig. 1 ist eine Flüssigkristallanzeige FKA dargestellt, die in bekannter Weise durch Glasplatten G begrenzt ist. Dazwischen befindet sich die Flüssigkristall-Substanz, die in bekannter Weise durch elektrische Felder beeinflußbar ist. Die einzelnen Anzeigeelemente AE enthalten Symbole, die aus einzeln ansteuerbaren Segmenten zusammengesetzt sind.An exemplary embodiment of the invention is described below with reference to FIG Drawings explained in more detail. It shows: Fig. 1 is a plan view of the liquid crystal display with integrated membrane keyboard Fig. 2 shows the cross section a display device constructed in multi-layer technology with a keyboard. 1 shows a liquid crystal display FKA, which is made in a known manner by Glass plates G is limited. In between is the liquid crystal substance, which can be influenced in a known manner by electric fields. The single ones Display elements AE contain symbols that are composed of individually controllable segments are.
Über die Flüssigkristallanzeige FKA ist eine Membran M gespannt, die an den jeweils einem Anzeigeelement AE zugeordneten Stellen Kontaktflächen K1 aufweist. Unmittelbar darunter befinden sich direkt auf der Oberfläche der oberen Glasplatte G der Flüssigkristallanzeige FKA ebenfalls Kontaktstellen K2. Die auf der Oberfläche der Glasplatte G befindlichen Kontaktstellen K2 werden bereits vor der Montage durch Aufbringen und Einbrennen eines leitfähigen Mediums hergestellt. Die in der Membran M befindlichen Kontaktstellen K1 werden bei einer Tmstenbetätigung direkt mit den Kontaktstellen K2 auf der Glasplatte G in Berührung gebracht, wodurch ein galvanischer Kontakt hergestellt wird.A membrane M is stretched over the liquid crystal display FKA, which has contact surfaces K1 at each of the points assigned to a display element AE. Immediately below it are directly on the surface of the top glass plate G of the liquid crystal display FKA also contact points K2. The ones on the surface The contact points K2 located on the glass plate G are already carried out prior to assembly Application and baking of a conductive medium produced. The one in the membrane M located contact points K1 are directly with a button actuation with the Contact points K2 on the glass plate G brought into contact, whereby a galvanic Contact is made.
Die Membran M ist an den Stellen, wo sich die Anzeigeelemente AE befinden, entweder hochtransparent, oder sie weist fensterartige Ausbrüche auf. Damit ist die Anzeige gut sichtbar, und die ggf. zu berührende Kontaktstelle g1 ist leicht aufzufinden.The membrane M is at the points where the display elements AE are, either highly transparent or it has window-like breakouts. So is the display is clearly visible and the contact point g1, which may be touched, is light to find.
Die Fig. 2 zeigt einen Querschnitt durch eine in Vier-Lagen-Technik aufgebaute Fliissigkristallanzeige mit integrierter Membrantastatur. Zusätzlich zu den die Flüssigkristall-Substanz FK umschließenden Glasplatten G sind noch die für die Funktion der Flüssigkristallanzeige FKA notwendigen Polarisationsfolien P, kurz Polfolien genannt, dargestellt. Dabei weist die obere Polfolie Ausbrüche auf, so daß die auf der Oberfläche der oberen Glasplatte G angebrachten Kontaktstellen K2 von den durch die Membran M betätigten Kontaktstellen K1 berührt werden können. tber der ersten Ebene, die durch die Oberfläche der oberen Glasplatte G mit ihren Kontaktflächen K2 gebildet wird, ist als zweite Ebene eine Abstands folie AF angeordnet.Fig. 2 shows a cross section through a four-layer technique built-up liquid crystal display with integrated membrane keyboard. Additionally to the glass plates G surrounding the liquid crystal substance FK are still the polarization foils necessary for the function of the liquid crystal display FKA P, called polar films for short, is shown. The upper pole foil shows breakouts so that the contact points made on the surface of the upper glass plate G K2 of the through the membrane M actuated contact points K1 touched can be. Above the first level, through the surface of the top glass plate G is formed with its contact surfaces K2, is a distance as the second level Foil AF arranged.
Mit dieser Abstrndsfolie AF wird gewährleistet, daß die als dritte Ebene darüber befindliche, die Gegenkontaktstellen K1 enthaltende Kontaktfolie KF einen ausreichenden Abstand hat, so daß unbeabsichtigte Kontaktgaben vermieden werden. Die als vierte und letzte Ebene dariiber angeordnete Membran M weist an den Kontaktstellen K1, K2 Erhöhungen auf, die z.B. durch Tiefziehen unter Temperatureinfluß hergestellt werden. Damit wird der bei einer Tastenbetätigung erforderliche Weg so verlängert, daß eine unbeabsichtigte Tastenbetätigung weitgehend ausgeschlossen ist.This separation film AF ensures that the third Contact foil KF located level above and containing the mating contact points K1 has a sufficient distance so that unintentional contact can be avoided. The membrane M arranged above it as the fourth and last level points at the contact points K1, K2 elevations, e.g. produced by deep drawing under the influence of temperature will. In this way, the path required when a key is pressed is extended so that that inadvertent key actuation is largely excluded.
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Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833320107 DE3320107A1 (en) | 1983-06-03 | 1983-06-03 | Liquid-crystal display having an integrated membrane keyboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833320107 DE3320107A1 (en) | 1983-06-03 | 1983-06-03 | Liquid-crystal display having an integrated membrane keyboard |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3320107A1 true DE3320107A1 (en) | 1984-12-06 |
Family
ID=6200570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833320107 Ceased DE3320107A1 (en) | 1983-06-03 | 1983-06-03 | Liquid-crystal display having an integrated membrane keyboard |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3320107A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29504958U1 (en) * | 1995-03-23 | 1995-05-11 | Siemens AG, 80333 München | Control unit |
EP0749138A1 (en) * | 1994-12-28 | 1996-12-18 | Idec Izumi Corporation | Thin switch device and display with switch |
EP1655750A2 (en) * | 2004-11-08 | 2006-05-10 | LCD Solution SARL | Push button having an integrated screen with multicolor information display |
FR2907927A1 (en) * | 2006-10-27 | 2008-05-02 | Ingenico Sa | Electronic payment terminal e.g. computer, for e.g. storing secured payment transaction, has membrane keyboard with transparent mechanical keys that are defined in display zone, and display managing unit in connection with keyboard |
EP1983403A2 (en) | 2007-04-19 | 2008-10-22 | Samsung SDI Co., Ltd. | Display for a keypad and electronic device having the same |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2411872A1 (en) * | 1973-03-15 | 1974-09-19 | Era Patents Ltd | METHOD FOR MANUFACTURING A TRANSPARENT ELECTRODE |
DE2949382A1 (en) * | 1978-12-07 | 1980-06-12 | Casio Computer Co Ltd | KEYBOARD WITH PASSIVE DISPLAY |
DE2913894A1 (en) * | 1979-04-06 | 1980-10-16 | Telefonbau & Normalzeit Gmbh | Telephone indicator pushbutton with integral cap - has various interchangeable liquid crystal plug-in tops to button unit |
DE2944304A1 (en) * | 1979-11-02 | 1981-05-07 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Flat press switch with connecting etched foil medium - has two parallel bar etched foils cross mounted with spacer between and illumination from below |
DE2952033A1 (en) * | 1979-12-22 | 1981-07-02 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Figure indicator and push switch assembly - has one-piece housing holding components together by using display connections |
DE3039713A1 (en) * | 1980-10-21 | 1982-05-27 | Siemens Ag | Inter active liquid crystal display - records required points upon short-circuit between opposing electrodes in response to applied pressure |
-
1983
- 1983-06-03 DE DE19833320107 patent/DE3320107A1/en not_active Ceased
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2411872A1 (en) * | 1973-03-15 | 1974-09-19 | Era Patents Ltd | METHOD FOR MANUFACTURING A TRANSPARENT ELECTRODE |
DE2949382A1 (en) * | 1978-12-07 | 1980-06-12 | Casio Computer Co Ltd | KEYBOARD WITH PASSIVE DISPLAY |
DE2913894A1 (en) * | 1979-04-06 | 1980-10-16 | Telefonbau & Normalzeit Gmbh | Telephone indicator pushbutton with integral cap - has various interchangeable liquid crystal plug-in tops to button unit |
DE2944304A1 (en) * | 1979-11-02 | 1981-05-07 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Flat press switch with connecting etched foil medium - has two parallel bar etched foils cross mounted with spacer between and illumination from below |
DE2952033A1 (en) * | 1979-12-22 | 1981-07-02 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Figure indicator and push switch assembly - has one-piece housing holding components together by using display connections |
DE3039713A1 (en) * | 1980-10-21 | 1982-05-27 | Siemens Ag | Inter active liquid crystal display - records required points upon short-circuit between opposing electrodes in response to applied pressure |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0749138A1 (en) * | 1994-12-28 | 1996-12-18 | Idec Izumi Corporation | Thin switch device and display with switch |
EP0749138A4 (en) * | 1994-12-28 | 1998-12-09 | Idec Izumi Corp | Thin switch device and display with switch |
US5977888A (en) * | 1994-12-28 | 1999-11-02 | Idec Izumi Corporation | Switching device of thin type and display device with switch |
DE29504958U1 (en) * | 1995-03-23 | 1995-05-11 | Siemens AG, 80333 München | Control unit |
EP1655750A2 (en) * | 2004-11-08 | 2006-05-10 | LCD Solution SARL | Push button having an integrated screen with multicolor information display |
EP1655750A3 (en) * | 2004-11-08 | 2007-08-22 | LCD Solution SARL | Push button having an integrated screen with multicolor information display |
FR2907927A1 (en) * | 2006-10-27 | 2008-05-02 | Ingenico Sa | Electronic payment terminal e.g. computer, for e.g. storing secured payment transaction, has membrane keyboard with transparent mechanical keys that are defined in display zone, and display managing unit in connection with keyboard |
EP1983403A2 (en) | 2007-04-19 | 2008-10-22 | Samsung SDI Co., Ltd. | Display for a keypad and electronic device having the same |
EP1983403A3 (en) * | 2007-04-19 | 2011-06-15 | Samsung Mobile Display Co., Ltd. | Display for a keypad and electronic device having the same |
US8259070B2 (en) | 2007-04-19 | 2012-09-04 | Samsung Mobile Display Co., Ltd. | Display for a keypad and electronic device having the same |
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Legal Events
Date | Code | Title | Description |
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8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: TELENORMA TELEFONBAU UND NORMALZEIT GMBH, 6000 FRA |
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8131 | Rejection |