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WO2000055879A1 - Interrupteur a effleurement electroluminescent - Google Patents

Interrupteur a effleurement electroluminescent Download PDF

Info

Publication number
WO2000055879A1
WO2000055879A1 PCT/US2000/006608 US0006608W WO0055879A1 WO 2000055879 A1 WO2000055879 A1 WO 2000055879A1 US 0006608 W US0006608 W US 0006608W WO 0055879 A1 WO0055879 A1 WO 0055879A1
Authority
WO
WIPO (PCT)
Prior art keywords
touch switch
membrane
indicator
layer
substrate
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
PCT/US2000/006608
Other languages
English (en)
Inventor
Matthew Wilkinson
Bryan D. Haynes
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.)
Add Vision Inc
Original Assignee
Add Vision Inc
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 Add Vision Inc filed Critical Add Vision Inc
Priority to AU41718/00A priority Critical patent/AU4171800A/en
Publication of WO2000055879A1 publication Critical patent/WO2000055879A1/fr
Anticipated expiration legal-status Critical
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
    • 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
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/038—Prompting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/018—Electroluminescent panel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/039—Selective or different modes of illumination
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/008—Static electricity considerations

Definitions

  • a membrane-style touch switch assembly is commonly used in applications where a user is selecting the function for a piece of electrical equipment.
  • the touch switch assembly operates such that the exertion of a light mechanical force on an indicator point is sufficient to complete a specific electric circuit. Completion of the electric circuit in turn controls the electrical equipment in the manner directed as signified by the indicator point.
  • a membrane-style touch switch In general the construction of a membrane-style touch switch includes a lower substrate with one or more conductors mounted or printed on it.
  • a spacer with apertures separates the lower substrate and conductors from an upper flexible substrate, which also has conductors mounted or printed on it.
  • the upper conductors are each aligned with a corresponding lower conductor.
  • the upper and lower conductors are separated by an air gap, which corresponds to one of the apertures in the spacer.
  • an indicator layer with graphics is mounted on the upper flexible substrate.
  • the graphics signify touch keys or indicator points, which are aligned with the upper and lower conductors.
  • the indicator points can specify particular functions of the electrical appliance. Pressure applied to the indicator layer on an indicator point and therefore to the upper flexible substrate will act to push an upper conductor and a corresponding lower conductor together. This contact closes an electric circuit, which produces the specified function from the appliance.
  • LEDs light emitting diodes
  • An LED can be associated with a specific indicator point and mounted to the indicator layer or within the air gap.
  • the touch switch assembly can be programmed so that the LED illuminates an individual indicator point or a group of indicator points to indicate to a user how to proceed in keying commands into the appliance.
  • the present invention is directed to a membrane-style touch switch assembly with an integrated electroluminescent lamp layer.
  • the invention is particularly directed to the use of electroluminescent lamps in membrane-style touch switch assemblies to provide a display which is instructional and user friendly by providing illumination designed to lead a user through the process of operating the equipment associated with the touch switch.
  • the assembly includes a lower substrate, which has conductive elements printed or mounted thereon.
  • a spacer which defines several apertures, is attached with the lower substrate. Each of the apertures is aligned with a conductive element.
  • a flexible upper substrate with conductive elements printed on its lower side is attached with the spacer. When the upper substrate is attached with the spacer the upper conductive elements are aligned with the apertures and therefore with the lower conductive elements.
  • the use of a spacer with apertures means there is an air gap between the upper conductive elements and the corresponding lower conductive elements.
  • a flexible electroluminescent layer is attached with the flexible upper substrate.
  • a flexible indicator layer which includes graphics, is attached to the flexible electroluminescent layer.
  • the indicator layer defines specific indicator points. When pressure is applied by, for example, a fingertip to an indicator point, the indicator layer, electroluminescent layer and flexible upper substrate flex and the air gap between one of the upper and lower conductive elements is closed. This completes a circuit.
  • the electroluminescent lighting is designed such that one pixel is associated with one indicator point on an indicator layer, or one group of indicator points one the indicator layer. As such, a pixel in the electroluminescent lamp layer can be used to light a specified indicator point or group of indicator points.
  • the electroluminescent layer is programmed to lead a user through the process necessary to use the appliance or equipment associated with the touch switch.
  • a digital circuit can be incorporated directly into the touch switch so that the logical control sequence for a particular application is highlighted for the person who is attempting to use the device. This delivers software-like menu control to the user, without resorting to putting a costly computer display into the device.
  • a significant benefit of using electroluminescent lighting to illuminate the membrane- style touch switch assembly is that the electroluminescent layer is flexible in itself. As a result very little space is required to include the lighting layer and it can be attached to the upper conductive substrate. The electroluminescent lighting will not be damaged by mechanical pressure causing it to flex. The membrane switch can be evenly illuminated while still having mechanical distortion capabilities.
  • Figure 1 shows an assembly of an embodiment of the electroluminescent membrane- style touch switch of the present invention showing all layers in exploded view.
  • Figure 2 shows a top view of an embodiment of the indicator layer, showing indicator points.
  • Figure 3 shows a dimensional drawing of an embodiment of the electroluminescent lamp layer.
  • Figure 4 shows a top view of an embodiment of an overlay adhesive layer.
  • Figure 5 shows a top view of an embodiment of the upper substrate with conductive elements.
  • Figure 6 shows a top view of an embodiment of the switch spacer.
  • Figure 7 shows a top view of an embodiment of the lower substrate with conductive elements
  • Figure 8 shows a top view of an embodiment of a mounting adhesive layer.
  • FIGS. 9 through 18 illustrate the touch switch illumination process for an embodiment of the invention. Detailed Description of the Invention
  • the membrane-style touch switch assembly comprises multiple layers.
  • the lower substrate 16 is shown in Fig. 7. It is typically composed of heat stabilized polyester or a similar material. The temperatures usually utilized for the manufacture of electroluminescent lamps means that heat stabilized materials are useful in this layer. A number of conductive elements 71 are printed on the top side of the lower substrate 16 with conductive ink.
  • the switch spacer 15, shown in Fig. 6, defines a number of apertures 61 such that each aperture 61 will lie over one of the conductive elements 71 on the lower substrate 16 once the switch spacer 15 lies across the lower substrate 16.
  • the upper substrate 14 is illustrated in Fig. 5. It is a requirement that the upper substrate be flexible. It is typically composed of heat stabilized polyester or a similar material.
  • a number of conductive elements 51 are printed on the bottom side of the upper substrate 14. The conductive elements 51 are printed such that when the upper substrate 14 lies over the spacer 15 and the lower substrate 16 each of the upper conductive elements 51 correspond to and are aligned with an aperture 61 in the spacer and therefore with a lower conductive element 71. Thus the upper and lower conductive elements are separated by the aperture in the spacer. Pressure on the flexible upper substrate 14 at the position of an upper conductive element 51 will bring that upper conductive element 51 into contact with a lower conductive element 71.
  • the top side of the upper substrate 14 can be printed with conductive ink in order to shield from electrostatic discharge.
  • Electroluminescent Lamp Layer
  • the electroluminescent lamp layer 12 is shown in Fig. 3.
  • the electroluminescent lamp layer 12 is flexible. It is comprised of one or more typical planar electroluminescent lamps such as the one described in U.S. Application No. 08/910,724, entitled ELECTROLUMINESCENT LAMP DESIGNS which is commonly owned by the assignee of the subject application and incorporated herein by reference.
  • laminar style lamp As described in U.S. Application No. 08/910,724.
  • these laminar style lamps include first and second electrically conductive layers and an electroluminescent material disposed between the first and second conductive layers.
  • the first electrically conductive layer includes a plurality of openings separated by electrically conductive elements.
  • the laminar style lamps may optionally include a translucent or transparent electrically conductive layer in electrical contact with the first conductive layer. In the embodiment that does not include the translucent or transparent electrically conductive layer, it is preferred that at least one of the openings in the first conductive layer has a minimum edge to edge distance of less than about 0.005 inches.
  • the first conductive layer includes rectangular or hexagonal shaped openings. In another preferred embodiment, at least a portion of one of the electrically conductive elements separating the openings in the first conductive layer has a width of less than about 0.002 inches. If the lamp includes a translucent or transparent electrically conductive material layer, it is preferred that this layer is made of particles of electrically conductive material suspended in a matrix.
  • Such lamps could include one or more iso-planar lamps as described in U.S. Application No. 08/910,724.
  • Such lamps include an electrically conductive layer divided into two or more electrically conductive elements by one or more channels.
  • the lamps also include an electroluminescent material, which at least partially fills a portion of the one or more channels or at least partially covers a portion of the two or more electrically conductive elements.
  • the iso-planar lamps include two conductive elements, which may be fabricated in a wide variety of shapes including inter-digitated comblike structures, and circular and rectangular interleaved spiral structures.
  • the lamp layer 12 will typically comprise a plurality of independently addressable picture elements or pixels.
  • Each pixel would be made to correspond to one set of upper and lower conductive elements and would be able to be independently controlled by, for example, a digital circuit, which can be incorporated directly into the touch switch.
  • the digital circuit controls the electroluminescent lamp 12 in such a way that the logical control sequence for a particular application is highlighted for the person who is attempting to use the device.
  • the indicator layer 11 is shown in Fig. 2. This layer is flexible and contains the graphics and icons that show a user how to control the appliance, for example. The graphics would vary according to the appliance or equipment associated with the touch switch.
  • the indicator layer 11 graphically defines specific indicator points 21, which designate a particular command or function of the electrical equipment being controlled. Each indicator point 21 typically will correspond to one set of upper conductive elements 51 and lower conductive elements 71. Each pixel on the electroluminescent layer would typically be used to illuminate one indicator point 21. Thus one indicator point 21 or one group of indicator points 21 is illuminated to direct the user as to which indicator point 21 should be pressed.
  • the indicator layer 11 could alternately be printed directly onto the electroluminescent layer.
  • Adhesive can be used to fixedly attach the layers together and to mount the membrane-style touch switch on the electrical equipment.
  • the assembly of the entire electroluminescent membrane-style touch switch is shown in Fig. 1.
  • the indicator layer 11 which graphically defines indicator points is attached with the electroluminescent layer 12.
  • a layer of adhesive 13 attaches the electroluminescent layer with the top side of the upper substrate 14.
  • the spacer 15 layer lies between the lower side of the upper substrate 14 on which conductive elements 51 are printed or mounted, and the upper side of the lower substrate 16 on which conductive elements 71 are printed or mounted.
  • Adhesive is used to mount the entire assembly to the electrical equipment it controls.
  • Figures 9 through 18 illustrate an embodiment of the touch switch showing a sequence for illuminating a touch switch designed for use in, for example, a factory.
  • the shaded indicator points are not illuminated while the unshaded indicator points are illuminated.
  • the sequence shown leads the user to hit 'Begin', Figure 9, and then enter the ID number of the part they are making in Figure 10.
  • the process continues with the user entering the job number, Figure 11, the design, Figure 12, the material, Figure 13, the quantity, Figure 14, the color, Figure 15 and hitting start, Figure 16.
  • Figure 17 the equipment associated with the touch switch is in operation and the options available are stop and resume.
  • Figure 18 shows the keypad after the process is completed.
  • Each touch switch and associated digital circuit can be designed in a way that reflects the functions that are relevant to controlling a particular application. For example, in a microwave key pad, upon the door being closed the electroluminescent layer would illuminate the power level button. Upon the power level button being pressed the electroluminescent layer would illuminate the power settings. Upon a power setting being selected the electroluminescent layer would illuminate the numbers to set a time. Upon the time being entered the electroluminescent layer would illuminate the start button which would start the microwave.
  • a washing machine touch switch for example, would have a different set of icons and a different sequence for the electroluminescent layer than, say, a microwave oven touch switch.
  • a method for guiding a person in utilizing a device associated with a touch switch is also encompassed by the invention.
  • the method comprises connecting a membrane-style touch switch with the device.
  • the membrane style touch switch is adapted to control the device and includes indicator points relating to the control of the device.
  • the membrane-style touch switch further includes electroluminescent lighting, which corresponds to at least some of the indicator points.
  • the method of this embodiment of the invention also comprises leading the person utilizing the device through a logical sequence for controlling the device. This is performed by illuminating the membrane-style touch switch using the electroluminescent lighting in such a manner as to illuminate the indicator points in the particular sequence the person would follow in performing the logical control sequence for the device.

Landscapes

  • Push-Button Switches (AREA)

Abstract

La présente invention concerne un ensemble interrupteur à effleurement (10), permettant de commander un dispositif. Cet interrupteur à éclairage électroluminescent (12) est prévu pour guider un utilisateur dans l'enchaînement des opérations à demander pour commander l'appareil considéré. Cet ensemble interrupteur à effleurement comporte un substrat inférieur (16) portant au moins un élément électro-conducteur. Un intercalaire (5) définit au moins une ouverture dans l'alignement des éléments électro-conducteurs de la couche inférieure. Un substrat supérieur (14) est pourvu d'au moins un élément électro-conducteur monté ou imprimé sur ce substrat. Les éléments électro-conducteurs de la couche supérieure sont conçus pour être dans l'alignement des ouvertures (61) de l'intercalaire (5). Une couche témoin (11) porte des points indicateurs. Une couche électroluminescente (12) éclaire l'un au moins des points. Un contrôleur est conçu pour commander la couche électroluminescente de façon que les points indicateurs s'allument en respectant un ordre d'enchaînement. L'invention concerne également un procédé de fabrication d'un tel ensemble interrupteur à effleurement, ainsi qu'un procédé permettant de faire suivre à un utilisateur un enchaînement logique permettant de commander un appareil associé à l'ensemble interrupteur à effleurement.
PCT/US2000/006608 1999-03-15 2000-03-14 Interrupteur a effleurement electroluminescent Ceased WO2000055879A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU41718/00A AU4171800A (en) 1999-03-15 2000-03-14 Electroluminescent touch switch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12452499P 1999-03-15 1999-03-15
US60/124,524 1999-03-15

Publications (1)

Publication Number Publication Date
WO2000055879A1 true WO2000055879A1 (fr) 2000-09-21

Family

ID=22415373

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/006608 Ceased WO2000055879A1 (fr) 1999-03-15 2000-03-14 Interrupteur a effleurement electroluminescent

Country Status (2)

Country Link
AU (1) AU4171800A (fr)
WO (1) WO2000055879A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002015211A1 (fr) * 2000-08-17 2002-02-21 Nokia Corporation Dispositif permettant d'intégrer l'éclairage dans le clavier d'appareils électroniques portables
WO2002091319A2 (fr) 2001-05-04 2002-11-14 Igt Affichages a interface electroluminescente pour appareil de jeux de hasard
US6803903B1 (en) 2000-08-17 2004-10-12 Nokia Mobile Phones, Ltd. Integration of organic light-emitting components into the keyboard of an electronic device
EP1523021A1 (fr) * 2003-10-06 2005-04-13 Research In Motion Limited Illumination sélective d'un clavier à boutons-poussoirs
GB2412244A (en) * 2004-02-20 2005-09-21 Pelikon Ltd Switches
EP1659828A1 (fr) * 2004-11-18 2006-05-24 Samsung Electronics Co., Ltd. Four à micro-ondes avec une conduite de guidage illuminée
US7220930B2 (en) 2003-01-28 2007-05-22 The Hoover Company Floor care appliance with an electro luminescent switch panel
EP1564771A3 (fr) * 2004-02-03 2008-01-23 CISA S.p.A. Clavier pour coffres-forts
US7628701B2 (en) 2002-06-24 2009-12-08 Igt System for interfacing a user and a casino gaming machine
US8864567B2 (en) 2004-01-12 2014-10-21 Igt Casino display methods and devices
US9129488B2 (en) 2001-09-27 2015-09-08 Igt Gaming machine reel having a rotatable dynamic display
EP3041320A1 (fr) * 2012-06-14 2016-07-06 Koninklijke Philips N.V. Appareil d'éclairage à surface électroluminescente tactile
US10162461B2 (en) 2016-05-25 2018-12-25 Josh Vekhter Capacitive sensing patent

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777222A (en) * 1972-05-12 1973-12-04 Ibm Modular touch sensitive indicating panels with touch and light transmissive overlay cover membrane containing visible printed indicia
US4022993A (en) * 1975-06-09 1977-05-10 Litton Systems, Inc. Switch assembly having electrically illuminated character display devices between transparent actuators and switch arrays
US4056699A (en) * 1975-11-13 1977-11-01 Essex International, Inc. Touch plate assembly
US4158115A (en) * 1978-06-26 1979-06-12 W. H. Brady Co. Internally connecting flexible switch
US4317011A (en) * 1980-01-21 1982-02-23 Chicago Decal Company Membrane touch switch
US4347416A (en) * 1980-05-12 1982-08-31 Ralph Ogden Membrane switch control panel arrangement and label assembly for labeling same
US4478666A (en) * 1981-11-02 1984-10-23 Ralph Ogden Membrane switch control panel arrangement and label assembly for labeling same
US4532395A (en) * 1983-09-20 1985-07-30 Timex Corporation Electroluminescent flexible touch switch panel

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777222A (en) * 1972-05-12 1973-12-04 Ibm Modular touch sensitive indicating panels with touch and light transmissive overlay cover membrane containing visible printed indicia
US4022993A (en) * 1975-06-09 1977-05-10 Litton Systems, Inc. Switch assembly having electrically illuminated character display devices between transparent actuators and switch arrays
US4056699A (en) * 1975-11-13 1977-11-01 Essex International, Inc. Touch plate assembly
US4158115A (en) * 1978-06-26 1979-06-12 W. H. Brady Co. Internally connecting flexible switch
US4317011A (en) * 1980-01-21 1982-02-23 Chicago Decal Company Membrane touch switch
US4347416A (en) * 1980-05-12 1982-08-31 Ralph Ogden Membrane switch control panel arrangement and label assembly for labeling same
US4478666A (en) * 1981-11-02 1984-10-23 Ralph Ogden Membrane switch control panel arrangement and label assembly for labeling same
US4532395A (en) * 1983-09-20 1985-07-30 Timex Corporation Electroluminescent flexible touch switch panel

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002015211A1 (fr) * 2000-08-17 2002-02-21 Nokia Corporation Dispositif permettant d'intégrer l'éclairage dans le clavier d'appareils électroniques portables
US6704004B1 (en) 2000-08-17 2004-03-09 Nokia Mobile Phones Ltd. Arrangement for integration of key illumination into keymat of portable electronic devices
US6803903B1 (en) 2000-08-17 2004-10-12 Nokia Mobile Phones, Ltd. Integration of organic light-emitting components into the keyboard of an electronic device
WO2002091319A2 (fr) 2001-05-04 2002-11-14 Igt Affichages a interface electroluminescente pour appareil de jeux de hasard
US7682249B2 (en) 2001-05-04 2010-03-23 Igt Light emitting interface displays for a gaming machine
US9129488B2 (en) 2001-09-27 2015-09-08 Igt Gaming machine reel having a rotatable dynamic display
US7628701B2 (en) 2002-06-24 2009-12-08 Igt System for interfacing a user and a casino gaming machine
GB2399673B (en) * 2003-01-28 2007-05-23 Hoover Co Electro luminescent switch panel
US7220930B2 (en) 2003-01-28 2007-05-22 The Hoover Company Floor care appliance with an electro luminescent switch panel
EP1523021A1 (fr) * 2003-10-06 2005-04-13 Research In Motion Limited Illumination sélective d'un clavier à boutons-poussoirs
US8864567B2 (en) 2004-01-12 2014-10-21 Igt Casino display methods and devices
EP1564771A3 (fr) * 2004-02-03 2008-01-23 CISA S.p.A. Clavier pour coffres-forts
GB2412244B (en) * 2004-02-20 2007-06-06 Pelikon Ltd Switches
GB2412244A (en) * 2004-02-20 2005-09-21 Pelikon Ltd Switches
US7294813B2 (en) 2004-11-18 2007-11-13 Samsung Electronics Co., Ltd. Microwave oven having an illuminated guide line
EP1659828A1 (fr) * 2004-11-18 2006-05-24 Samsung Electronics Co., Ltd. Four à micro-ondes avec une conduite de guidage illuminée
EP3041320A1 (fr) * 2012-06-14 2016-07-06 Koninklijke Philips N.V. Appareil d'éclairage à surface électroluminescente tactile
US9674919B2 (en) 2012-06-14 2017-06-06 Philips Lighting Holding B.V. Lighting fixture with touch-sensitive light emitting surface
US10162461B2 (en) 2016-05-25 2018-12-25 Josh Vekhter Capacitive sensing patent

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Publication number Publication date
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