EP0175186A1 - Electroluminescent panel and method of producing such a panel - Google Patents

Electroluminescent panel and method of producing such a panel Download PDF

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Publication number
EP0175186A1
EP0175186A1 EP85110871A EP85110871A EP0175186A1 EP 0175186 A1 EP0175186 A1 EP 0175186A1 EP 85110871 A EP85110871 A EP 85110871A EP 85110871 A EP85110871 A EP 85110871A EP 0175186 A1 EP0175186 A1 EP 0175186A1
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EP
European Patent Office
Prior art keywords
panel
electroluminescent
lamp
opening
plates
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Withdrawn
Application number
EP85110871A
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German (de)
French (fr)
Inventor
Pierre Queudray
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.)
Vibrachoc SAS
Original Assignee
Vibrachoc SAS
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 Vibrachoc SAS filed Critical Vibrachoc SAS
Publication of EP0175186A1 publication Critical patent/EP0175186A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H01H9/182—Illumination of the symbols or distinguishing marks
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/04—Sealing arrangements, e.g. against humidity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H01H2009/186—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks using an electroluminiscent panel
    • 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
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H01H2219/0622—Light conductor only an illuminated ring around keys

Definitions

  • the present invention relates to an electroluminescent panel, consisting of an electroluminescent lamp and two plates surrounding this lamp, one which generally does not have to transmit light and the other provided with elements to be lit, comprising at least one opening for the passage of an operating member.
  • It also relates to a method of manufacturing such a panel.
  • the electroluminescent panels used for example in the production of control and command panels, generally comprise an electroluminescent lamp inserted between two plates connected by gluing, one generally waterproof to light but which can be brought to transmit light in some places, and the other with the elements that we want to light.
  • An electroluminescent lamp consists of a layer of doped powder inserted between two electrodes connected to an alternative electrical source.
  • One of the electrodes is transparent and the surface of the lamp thus becomes luminous by photonic emission, giving a homogeneous light source without hot spot.
  • the object of the present invention is to eliminate this drawback in order to ensure efficient lighting of the periphery of an operating member.
  • the electroluminescent panel according to the invention is characterized in that the active part of the electroluminescent lamp is tangent to the periphery of one or more openings.
  • an opening comprises an optical guide over the entire thickness of the panel, and this optical guide comprises a chamfer to improve the lighting of the operating member passing through an opening.
  • the manufacturing method according to the invention consists in inserting a solid electroluminescent lamp between two plates, and it is characterized in that an opening is made throughout the thickness of the panel.
  • an optical guide is then placed in this opening.
  • FIG 1 there is shown a panel 10 having a solid light emitting lamp 1, inserted between two plates 2, 3.
  • These plates can be, for example, made of metracrylates or polycarbonates.
  • the plate 2 constitutes a light-tight plate which has edges 2 'in order to receive the lamp 1.
  • the plate 3 is held by gluing on the edges 2' of the plate 2.
  • This plate 3 is the front plate which comprises the elements to be illuminated, such as for example light spots 4, or a light strip 5 or even light markings necessary for an operator responsible for driving and controlling any vehicle or machine.
  • This plate is also crossed by two operating members such as, for example, a rotary button 6 and a push button 8.
  • FIG 2 shows, in section, the crossing of the buttons 6 and 8.
  • the lamp 1 consisting of a powder inserted between two electrodes 1A, 1B, the two plates 2, 3 and the buttons 6 and 8.
  • an optical guide is placed in the openings made for crossing the buttons.
  • the optical guides 7 and 9 each have a chamfer, respectively 7A and 9A, in order to improve the lighting of each button.
  • a rotary button 6 and a push button 8 have been shown.
  • the rotary button 6 is provided with a notch 6A allowing the light emitted by the lamp 1 to pass, this notch being extended by a spout 6B serving to identify the graduation inscribed on the panel.
  • the push button 8 has a recess 8A facilitating the operation and the periphery of this button 8 is very clearly lit because the active part of the electroluminescent lamp is tangent to the opening.
  • the lighting of the periphery is further improved by the presence of the optical guide 9 provided with a chamfer 9A.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention concerne un panneau électroluminescent (10), constitué d'une lampe électroluminescente (1) et de deux plaques (2, 3) ensèrant cette lampe, l'une (2) qui généralement n'a pas à transmettre de la lumière et l'autre (3) munie des éléments à éclairer, comportant au moins une ouverture pour le passage d'un organe de manoeuvre (6, 8), caractérisé en ce que la partie active de la lampe électroluminescente est tangente au pourtour d'une ou de plusieurs ouvertures.Elle concerne également un procédé de fabrication d'un tel panneau.Application aux tableaux de contrôle et de commande (postes de pilotage, tableaux de bord, synoptiques, ...).The present invention relates to an electroluminescent panel (10), consisting of an electroluminescent lamp (1) and two plates (2, 3) enclosing this lamp, one (2) which generally does not have to transmit light and the other (3) provided with the elements to be illuminated, comprising at least one opening for the passage of an operating member (6, 8), characterized in that the active part of the electroluminescent lamp is tangent to the periphery of one or more openings. It also relates to a method of manufacturing such a panel. Application to control and command panels (cockpits, dashboards, synoptics, etc.).

Description

La présente invention concerne un panneau électroluminescent, constitué d'une lampe électroluminescente et de deux plaques ensèrant cette lampe, l'une qui généralement n'a pas à transmettre de la lumière et l'autre munie des éléments à éclairer, comportant au moins une ouverture pour le passage d'un organe de manoeuvre.The present invention relates to an electroluminescent panel, consisting of an electroluminescent lamp and two plates surrounding this lamp, one which generally does not have to transmit light and the other provided with elements to be lit, comprising at least one opening for the passage of an operating member.

Elle concerne également un procédé de fabrication d'un tel panneau.It also relates to a method of manufacturing such a panel.

Les panneaux électroluminescents, utilisés par exemple dans la réalisation de tableaux de contrôle et de commande, comportent d'une manière générale une lampe électroluminescente insérée entre deux plaques reliées par collage, l'une généralement étanche à la lumière mais qui peut être amenée à transmettre de la lumière en certains endroits, et l'autre comportant les éléments que l'on souhaite éclairer.The electroluminescent panels, used for example in the production of control and command panels, generally comprise an electroluminescent lamp inserted between two plates connected by gluing, one generally waterproof to light but which can be brought to transmit light in some places, and the other with the elements that we want to light.

Une lampe électroluminescente est constituée d'une couche de poudre dopée insérée entre deux électrodes reliées à une source électrique alternative. L'une des électrodes est transparente et la surface de la lampe devient ainsi lumineuse par émission photonique, donnant une source de lumière homogène sans point chaud.An electroluminescent lamp consists of a layer of doped powder inserted between two electrodes connected to an alternative electrical source. One of the electrodes is transparent and the surface of the lamp thus becomes luminous by photonic emission, giving a homogeneous light source without hot spot.

L'évolution récente des techniques de fabrication des lampes a permis d'abandonner les lampes dites "rigides" au profit de lampes dites "souples", la poudre étant enrobée entre deux électrodes souples reliées à leur périphérie par un encapsulage thermo-soudé. Les panneaux électroluminescents, utilisés notamment dans les postes de pilotage, comportent des organes de manoeuvre qui traversent ces panneaux, et il faut alors réaliser des ouvertures correspondantes dans l'épaisseur du panneau.Recent developments in lamp manufacturing techniques have made it possible to abandon so-called "rigid" lamps in favor of so-called "flexible" lamps, the powder being coated between two flexible electrodes connected at their periphery by heat-sealed encapsulation. The electroluminescent panels, used in particular in cockpits, comprise operating members which pass through these panels, and it is then necessary to make corresponding openings in the thickness of the panel.

D'une manière connue, la réalisation des ouvertures sur les deux plaques et sur la lampe électroluminescente se fait séparément, et dans le cas de la lampe, les ouvertures nécessitent sur leur pourtour un encapsulage thermo-soudé. Ceci présente un inconvénient car la présence de cet encapsulage nuit à l'émission de lumière sur le pourtour de chaque ouverture. L'éclairage de la périphérie de l'organe de manoeuvre traversant cette ouverture ne sera pas assuré de manière efficace.In a known manner, the realization of the openings on the two plates and on the electroluminescent lamp is done separately, and in the case of the lamp, the openings require around their periphery a heat-sealed encapsulation. This has a drawback because the presence of this encapsulation harms the emission of light around the periphery of each opening. The lighting of the periphery of the operating member passing through this opening will not be effectively ensured.

La présente invention a pour but de supprimer cet inconvénient afin d'assurer un éclairage efficace de la périphérie d'un organe de manoeuvre.The object of the present invention is to eliminate this drawback in order to ensure efficient lighting of the periphery of an operating member.

Le panneau électroluminescent selon l'invention est caractérisé en ce que la partie active de la lampe électroluminescente est tangente au pourtour d'une ou de plusieurs ouvertures.The electroluminescent panel according to the invention is characterized in that the active part of the electroluminescent lamp is tangent to the periphery of one or more openings.

De préférence, une ouverture comporte un guide optique sur toute l'épaisseur du panneau, et ce guide optique comporte un chanfrein pour améliorer l'éclairage de l'organe de manoeuvre traversant une ouverture.Preferably, an opening comprises an optical guide over the entire thickness of the panel, and this optical guide comprises a chamfer to improve the lighting of the operating member passing through an opening.

Le procédé de fabrication selon l'invention consiste à insérer une lampe électroluminescente pleine entre deux plaques, et il est caractérisé en ce que l'on pratique une ouverture dans toute l'épaisseur du panneau.The manufacturing method according to the invention consists in inserting a solid electroluminescent lamp between two plates, and it is characterized in that an opening is made throughout the thickness of the panel.

De préférence, on place ensuite un guide optique dans cette ouverture.Preferably, an optical guide is then placed in this opening.

Il est décrit ci-après, à titre d'exemple et en référence aux dessins annexés, un panneau électroluminescent selon l'invention.

  • - La figure 1 représente un panneau électroluminescent muni de deux organes de manoeuvre.
  • La figure 2 représente le même panneau, en coupe selon II de la figure 1.
There is described below, by way of example and with reference to the accompanying drawings, an electroluminescent panel according to the invention.
  • - Figure 1 shows an electroluminescent panel provided with two actuators.
  • FIG. 2 represents the same panel, in section along II of FIG. 1.

Dans la figure 1, il est représenté un panneau 10 comportant une lampe électroluminescente 1 pleine, insérée entre deux plaques 2, 3. Ces plaques peuvent être, par exemple, fabriquées en métracrylates ou en polycarbonates. La plaque 2 constitue une plaque étanche à la lumière qui comporte des rebords 2' afin de recevoir la lampe 1. La plaque 3 est maintenue par collage sur les rebords 2' de la plaque 2. Cette plaque 3 est la plaque frontale qui comporte les éléments à éclairer, tels que par exemple des points lumineux 4, ou une bande lumineuse 5 ou même des inscriptions lumineuses nécessaires à un opérateur chargé de la conduite et de la commande d'un engin ou d'une machine quelconques. Cette plaque est également traversée par deux organes de manoeuvre tels que, par exemple, un bouton tournant 6 et un bouton poussoir 8.In Figure 1, there is shown a panel 10 having a solid light emitting lamp 1, inserted between two plates 2, 3. These plates can be, for example, made of metracrylates or polycarbonates. The plate 2 constitutes a light-tight plate which has edges 2 'in order to receive the lamp 1. The plate 3 is held by gluing on the edges 2' of the plate 2. This plate 3 is the front plate which comprises the elements to be illuminated, such as for example light spots 4, or a light strip 5 or even light markings necessary for an operator responsible for driving and controlling any vehicle or machine. This plate is also crossed by two operating members such as, for example, a rotary button 6 and a push button 8.

La figure 2 montre, en coupe, la traversée des boutons 6 et 8. Sur cette figure, il est représenté la lampe 1, constituée d'une poudre insérée entre deux électrodes 1A, 1B, les deux plaques 2, 3 et les boutons 6 et 8.Figure 2 shows, in section, the crossing of the buttons 6 and 8. In this figure, there is shown the lamp 1, consisting of a powder inserted between two electrodes 1A, 1B, the two plates 2, 3 and the buttons 6 and 8.

Pour éviter une oxydation de la lampe due à l'humidité, on place un guide optique dans les ouvertures pratiquées pour la traversée des boutons.To avoid oxidation of the lamp due to humidity, an optical guide is placed in the openings made for crossing the buttons.

Les guides optiques 7 et 9 comportent chacun un chanfrein, respectivement 7A et 9A, afin d'améliorer l'éclairage de chaque bouton.The optical guides 7 and 9 each have a chamfer, respectively 7A and 9A, in order to improve the lighting of each button.

A titre d'exemple, il a été représenté un bouton tournant 6 et un bouton-poussoir 8.By way of example, a rotary button 6 and a push button 8 have been shown.

Le bouton tournant 6 est muni d'une encoche 6A laissant passer la lumière émise par la lampe 1, cette encoche étant prolongée par un bec 6B servant à repérer la graduation inscrite sur le panneau.The rotary button 6 is provided with a notch 6A allowing the light emitted by the lamp 1 to pass, this notch being extended by a spout 6B serving to identify the graduation inscribed on the panel.

Le bouton-poussoir 8 présente un évidement 8A facilitant la manoeuvre et le pourtour de ce bouton 8 est éclairé de manière très nette car la partie active de la lampe électroluminescente est tangente à l'ouverture. L'éclairage du pourtour est encore amélioré par la présence du guide optique 9 muni d'un chanfrein 9A.The push button 8 has a recess 8A facilitating the operation and the periphery of this button 8 is very clearly lit because the active part of the electroluminescent lamp is tangent to the opening. The lighting of the periphery is further improved by the presence of the optical guide 9 provided with a chamfer 9A.

L'opération qui consiste à réaliser l'ouverture nécessaire à la traversée des boutons, est réalisée de la manière suivante :

  • - on constitue le panneau en insérant la lampe pleine 1 entre les deux plaques 2, 3 et on perce cette ouverture à l'aide d'un outil approprié (foret ou fraise), directement dans le panneau électroluminescent déjà constitué,
  • - on place ensuite le guide optique dans l'ouverture,
  • - on réalise ensuite, d'une manière connue, toutes les opérations classiques ultérieures telles que notamment une peinture, un marquage, une gravure.
The operation which consists in carrying out the opening necessary for the crossing of the buttons, is carried out as follows:
  • the panel is formed by inserting the full lamp 1 between the two plates 2, 3 and this opening is pierced using an appropriate tool (drill or cutter), directly in the electroluminescent panel already formed,
  • - the optical guide is then placed in the opening,
  • - Then, in a known manner, all subsequent conventional operations such as in particular painting, marking, engraving.

Claims (5)

1/ Panneau électroluminescent (10), constitué d'une lampe électroluminescente (1) et de deux plaques (2, 3) ensèrant cette lampe, l'une (2) qui généralement n'a pas à transmettre de la lumière et l'autre (3) munie des éléments à éclairer, comportant au moins une ouverture pour le passage d'un organe de manoeuvre (6, 8), caractérisé en ce que la partie active de la lampe électroluminescente est tangente au pourtour d'une ou de plusieurs ouvertures.1 / electroluminescent panel (10), consisting of an electroluminescent lamp (1) and two plates (2, 3) surrounding this lamp, one (2) which generally does not have to transmit light and the other (3) provided with elements to be lit, comprising at least one opening for the passage of an operating member (6, 8), characterized in that the active part of the electroluminescent lamp is tangent to the periphery of one or more several openings. 2/ Panneau électroluminescent selon la revendication 1, caractérisé en ce qu'au moins une ouverture comporte un guide optique (7, 9) sur toute l'épaisseur du panneau.2 / electroluminescent panel according to claim 1, characterized in that at least one opening comprises an optical guide (7, 9) over the entire thickness of the panel. 3/ Panneau électroluminescent selon la revendication 2, caractérisé en ce que le guide optique (7, 9) comporte un chanfrein (7A, 9A) pour améliorer l'éclairage de l'organe de manoeuvre traversant une ouverture.3 / electroluminescent panel according to claim 2, characterized in that the optical guide (7, 9) comprises a chamfer (7A, 9A) to improve the lighting of the operating member passing through an opening. 4/ Procédé de fabrication d'un panneau électroluminescent selon l'une des revendications 1 à 3, consistant à insérer une lampe électroluminescente (1) pleine entre deux plaques (2, 3), caractérisé en ce que l'on pratique une ouverture dans toute l'épaisseur du panneau.4 / A method of manufacturing an electroluminescent panel according to one of claims 1 to 3, consisting in inserting a solid light-emitting lamp (1) between two plates (2, 3), characterized in that an opening is made in the entire thickness of the panel. 5/ Procédé selon la revendication 4, caractérisé en ce que l'on place un guide optique (7, 9) dans l'ouverture.5 / A method according to claim 4, characterized in that an optical guide (7, 9) is placed in the opening.
EP85110871A 1984-08-30 1985-08-29 Electroluminescent panel and method of producing such a panel Withdrawn EP0175186A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8413443A FR2569895B1 (en) 1984-08-30 1984-08-30 LIGHT EMITTING PANEL AND METHOD FOR MANUFACTURING SUCH A PANEL
FR8413443 1984-08-30

Publications (1)

Publication Number Publication Date
EP0175186A1 true EP0175186A1 (en) 1986-03-26

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Application Number Title Priority Date Filing Date
EP85110871A Withdrawn EP0175186A1 (en) 1984-08-30 1985-08-29 Electroluminescent panel and method of producing such a panel

Country Status (3)

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US (1) US4667273A (en)
EP (1) EP0175186A1 (en)
FR (1) FR2569895B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644564A1 (en) * 1993-09-17 1995-03-22 Ford Motor Company Control panel illumination

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63135389U (en) * 1987-02-25 1988-09-06
US4775964A (en) * 1988-01-11 1988-10-04 Timex Corporation Electroluminescent dial for an analog watch and process for making it
US4882659A (en) * 1988-12-21 1989-11-21 Delco Electronics Corporation Vacuum fluorescent display having integral backlit graphic patterns
US5265071A (en) * 1993-02-02 1993-11-23 Timex Corporation Electroluminescent watch dial support and connector assembly
US5670776A (en) * 1995-01-06 1997-09-23 Rothbaum; Wayne P. Electroluminescent wall plate and switch
US5729093A (en) * 1995-08-08 1998-03-17 Ford Motor Company Control for multiple circuit electroluminescent lamp panel
US5899553A (en) * 1996-04-17 1999-05-04 Howell; Montgomery Brook Electroluminescent lamp for illuminating push-button devices
US20090091478A1 (en) * 1998-11-13 2009-04-09 Chan Sam E J Computer keyboard backlighting
US6765503B1 (en) 1998-11-13 2004-07-20 Lightpath Technologies, Inc. Backlighting for computer keyboard
US20080212307A1 (en) * 1998-11-13 2008-09-04 Chan Sam E J Computer keyboard backlighting
US6871978B2 (en) 1998-11-13 2005-03-29 Lightpath Technologies, Inc. Computer keyboard backlighting
ATE398857T1 (en) * 1998-11-13 2008-07-15 Firefly International Inc BACKLIGHT FOR COMPUTER KEYBOARD
US7335843B2 (en) * 1998-11-13 2008-02-26 Firefly International, Inc. Computer keyboard backlighting
AU2001241764A1 (en) 2000-02-26 2001-09-03 Federal Mogul Corporation Vehicle interior lighting systems using electroluminescent panels
DE20212471U1 (en) 2002-08-13 2003-02-06 FER Fahrzeugelektrik GmbH, 99817 Eisenach Lighting for keys of keyboard uses etched plates with electro luminescent devices
DE10333736B4 (en) * 2003-07-23 2008-08-14 Siemens Ag Illuminable viewing element with electroluminescent film
DE10337327A1 (en) * 2003-08-12 2005-03-17 Koch Gmbh & Co. Kg Control panel and home appliance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB829588A (en) * 1957-04-30 1960-03-02 Edwin A Neugass Improvements in and relating to illuminated panels
US3219008A (en) * 1959-09-08 1965-11-23 Sylvania Electric Prod Electroluminescent instrument lighting
US3545110A (en) * 1968-01-02 1970-12-08 Automatic Sprinkler Corp Illuminated panel and method of making the same
FR2111530A5 (en) * 1970-12-05 1972-06-02 Samantha Srl

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1205706A (en) * 1958-08-07 1960-02-04 Light board
DE1275583B (en) * 1966-09-03 1968-08-22 Telefunken Patent Solid-state flat panel display comprising a dielectric that luminesces in an electric field and method for making the same
US3670067A (en) * 1968-01-02 1972-06-13 Ato Inc Method of making illuminated panel
US3531881A (en) * 1968-02-15 1970-10-06 Los Angeles Miniature Products Insignia-bearing panel assembly
US3621595A (en) * 1969-05-09 1971-11-23 Ato Inc Electroluminescent light source and structures illuminated thereby
US3676943A (en) * 1970-07-27 1972-07-18 Gen Electric Non-flammable, thin, integrally illuminated control panel overlay
AU3400071A (en) * 1970-10-26 1973-04-05 Dow Chemical Co Polymerization of acrylonitrile butadiene/styrene polymers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB829588A (en) * 1957-04-30 1960-03-02 Edwin A Neugass Improvements in and relating to illuminated panels
US3219008A (en) * 1959-09-08 1965-11-23 Sylvania Electric Prod Electroluminescent instrument lighting
US3545110A (en) * 1968-01-02 1970-12-08 Automatic Sprinkler Corp Illuminated panel and method of making the same
FR2111530A5 (en) * 1970-12-05 1972-06-02 Samantha Srl

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644564A1 (en) * 1993-09-17 1995-03-22 Ford Motor Company Control panel illumination
US5570114A (en) * 1993-09-17 1996-10-29 Ford Motor Company Control panel illumination

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US4667273A (en) 1987-05-19
FR2569895B1 (en) 1986-12-05
FR2569895A1 (en) 1986-03-07

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