FR2518317A1 - LIGHT EMITTING DIODE PLAN ARRAY - Google Patents

LIGHT EMITTING DIODE PLAN ARRAY Download PDF

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Publication number
FR2518317A1
FR2518317A1 FR8220789A FR8220789A FR2518317A1 FR 2518317 A1 FR2518317 A1 FR 2518317A1 FR 8220789 A FR8220789 A FR 8220789A FR 8220789 A FR8220789 A FR 8220789A FR 2518317 A1 FR2518317 A1 FR 2518317A1
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France
Prior art keywords
emitting diodes
reflectors
light
strips
light emitting
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.)
Granted
Application number
FR8220789A
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French (fr)
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FR2518317B1 (en
Inventor
Dieter Busch
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Licentia Patent Verwaltungs GmbH
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Licentia Patent Verwaltungs GmbH
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Filing date
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Publication of FR2518317A1 publication Critical patent/FR2518317A1/en
Application granted granted Critical
Publication of FR2518317B1 publication Critical patent/FR2518317B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/90—Methods of manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements
    • H01L33/60—Reflective elements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

In a multiple light-emitting diode array, the light-emitting diode carrier has a multiplicity of reflectors in which the light-emitting diodes are arranged, the reflectors being combined in strip or matrix form.

Description

La présente invention concerne un réseau plan de diodes électroluminescentes. La technique actuelle utilise de plus en plus des diodes électroluminescentes. C'est ainsi par exemple que, dans des cas déterminés, des appareils d'éclairage munis de lampes à incandescence ou fluorescence sont remplacés par des réseaux plans de diodes électroluminescentes.Il en est de même pour les feux de position, de stop et clignotants de véhicules. te remplacement des feux usuels de stop et clignotants par des réseaux plans de diodes electrolumi nescentes est essentiellement imputable au fait que ces feux équipés des lampes à incandescence ou fluorescence classiques présentent un encombrement relativement grand (construction profonde), tandis que les appareils d'éclairage réalisés avec des diodes électroluminescentes sont relativement plats et s'adaptent facîl#ment.au support considéré, une aile de voiture par exemple.Une faible profondeurs meme pour une grande surface radiante, et une bonne adaptation à la carrosserie considerée constituent tt#tefois une condition essentielle pour une faible résistance du véhicule z l'air.  The present invention relates to a flat array of light emitting diodes. The current technique increasingly uses light emitting diodes. For example, in certain cases, lighting fixtures fitted with incandescent or fluorescent lamps are replaced by flat arrays of light-emitting diodes. The same applies to position, stop and indicator lights vehicles. The replacement of the usual stop and flashing lights with flat arrays of light-emitting diodes is essentially due to the fact that these lights fitted with conventional incandescent or fluorescent lamps have a relatively large footprint (deep construction), while the lighting fixtures made with light-emitting diodes are relatively flat and adapt easily to the support considered, a car fender for example. A shallow depth even for a large radiant surface, and a good adaptation to the body considered is, however, quite a essential condition for low resistance of the vehicle to air.

L'invention a pour objet un réseau plan de diodes électrolumi- nescentes, eealisable avec une grande surface et une faible passeur, s'adaptant facilement au support considéré et permettant en outre une production facile et économique. selon une caractéristique essentielle de l'ínventson, le support des diodes électroluminescentes comprend de nombreux réflecteurs, dans lesquels sont disposées les diodes électroluminescentes, et qui sont réunis en bande ou matrice. L1invention ne se limite pas aux diodes, mais s'applique à d'autres éléments électro luminescents à bac de semiconducteurs. The subject of the invention is a planar array of light-emitting diodes, which can be achieved with a large surface area and a small passer, easily adapting to the support considered and also allowing easy and economical production. according to an essential characteristic of the invention, the support of the light-emitting diodes comprises numerous reflectors, in which the light-emitting diodes are arranged, and which are united in strip or matrix. The invention is not limited to diodes, but applies to other electroluminescent elements with a semiconductor tray.

Les réflecteurs d'une bande ou d'une matrice sont reliés par des barrettes par exemple. Pour obtenir un réseau plan de diodes électro- luminescentes de grande surface, plusieurs bandes de reflecteurs sont avantageusement disposées côte à cote. Une juxtaposition appropriée de bandes de réflecteurs permet d'obtenir un réseau plan de diodes électro luminescentes de taille quelconque. The reflectors of a strip or of a matrix are connected by bars for example. To obtain a flat array of large area light emitting diodes, several strips of reflectors are advantageously placed side by side. A suitable juxtaposition of reflector strips makes it possible to obtain a plane array of light-emitting diodes of any size.

La connexion des diodes électroluminescentes du réseau plan s'effectue par exemple à l'aide de bandes de contact, disposées chacune entre deux bandes de réflecteurs. Des fils sont disposés entre les diodes électroluminescentes et les bandes de contact. The connection of the light-emitting diodes of the planar array is carried out for example using contact strips, each arranged between two strips of reflectors. Wires are arranged between the light emitting diodes and the contact strips.

Les bandes ou matrices de réflecteurs sont par exemple produits à partir d'une pièce, en aluminium par exemple. Les bandes ou matrices de réflecteurs sont avantageusement disposées sur un support, réalisé en matière plastique par exemple. Le support des bandes de réflecteurs ainsi que ces dernières ou les matrices de réflecteurs doivent etre aussi souples que possibles afín de permettre l'adaptation facile du réseau plan de diodes électroluminescentes selon l'in vention meme sur des objets bombés, tels que les ailes d'un véhicule. The strips or arrays of reflectors are for example produced from a part, in aluminum for example. The strips or arrays of reflectors are advantageously arranged on a support, made of plastic for example. The support for the strips of reflectors as well as the latter or the arrays of reflectors must be as flexible as possible in order to allow easy adaptation of the plane array of light-emitting diodes according to the invention even on bulging objects, such as the wings of 'a vehicle.

Un recouvrement est disposé sur les réflecteurs et par suite-aussi sur les diodes électroluminescentes disposées dans ces derniers Il est avantageusement de forme lengiculairé afin d'accroitre l'intensité lumineuse des diodes électroluminescentes. Ce revetement, qui doit évidemment etre transparent, est par exemple réalisé en résine époxyde. A covering is arranged on the reflectors and consequently also on the light-emitting diodes arranged in the latter. It is advantageously of lengiculairé shape in order to increase the light intensity of the light-emitting diodes. This coating, which must obviously be transparent, is for example made of epoxy resin.

D'autres caractéristiques et avantages de l'invention seront mieux compris à l'aide de la description détaillée ci-dessous d'exem- ples de réalisation et des dessins annexés sur lesquels la figure la représente une bande ou une ligne de réflecteurs, la figure lb représente une bande de réf îecteurs dans lesquels sont disposées les diodes électrolumînescentes; la figure 2 représente une matrice de réflecteurs; la figure 3 représente une matrice constituée par des bandes de réflec- teurs juxtaposées; la figure 4 représente un réseau de diodes électroluminescente; avec embase et recouvrement; et la figure 5 représente un réseau de diodes électroluminescentes dont ls bandes de réflecteurs comportent une embase ou support commun. Other characteristics and advantages of the invention will be better understood with the aid of the detailed description below of exemplary embodiments and of the appended drawings in which the figure la represents a strip or a line of reflectors, the FIG. 1b represents a strip of ref ectors in which the light-emitting diodes are arranged; FIG. 2 represents a matrix of reflectors; FIG. 3 represents a matrix constituted by strips of juxtaposed reflectors; FIG. 4 represents an array of light-emitting diodes; with base and cover; and FIG. 5 represents a network of light-emitting diodes whose ls strips of reflectors comprise a base or common support.

La figure la représente une bande de réflecteurs selon l'invention
Une bande de réflecteurs, constituant le support des diodes électro luminescentes, est constituée selon figure 1 par plusieurs réflecteurs 1 reliés, contenant chacun une diode électroluminescente 2 selon la figure lb. Pour obtenir une grande surface lumineuse ou une intensité lumineuse déterminée, les bandes de réflecteurs sont. de préférence juxtaposées pour former une matrice selon figures 3 et 5. La bande de réflecteurs de la figure 1 ne comporte que quatre réflecteurs 1 par raison de simplicité, mais une telle bande comporte en pratique généralement beaucoup plus de réflecteurs. Les diodes électroluminescentes 2 sont disposées selon figure lb sur le fond des réflecteurs 1.Ces derniers, généralement en forme de cuvette, sont relies par des barrettes 3 selon figure 1. Les bandes de réflecteurs sont avantageusement produites en une seule pièce, par découpage et formage par exemple. L'aluminium par exemple convient comme matériau pour les réflecteurs et par suite aussi pour les bandes de réflecteurs.Figure la shows a strip of reflectors according to the invention
A strip of reflectors, constituting the support of the light-emitting diodes, is constituted according to FIG. 1 by several connected reflectors 1, each containing a light-emitting diode 2 according to FIG. 1b. To obtain a large luminous surface or a determined luminous intensity, the strips of reflectors are. preferably juxtaposed to form a matrix according to FIGS. 3 and 5. The strip of reflectors of FIG. 1 comprises only four reflectors 1 for reasons of simplicity, but such a strip in practice generally comprises many more reflectors. The light-emitting diodes 2 are arranged according to FIG. 1b on the bottom of the reflectors 1. The latter, generally in the form of a bowl, are connected by strips 3 according to FIG. 1. The strips of reflectors are advantageously produced in one piece, by cutting and forming for example. Aluminum, for example, is suitable as a material for reflectors and therefore also for reflector strips.

Dans le réseau selon figure 2, les réflecteurs 1 sont disposés suivant une matrice. il est toutefois recommandé de juxtaposer plusieurs bandes de réflecteurs selon figure 1, pour obtenir un réseau plan selon figures 3 et 5. Cette disposition en matrice sert de support aux diodes électroluminescentes disposées dans les réflecteurs. In the array according to FIG. 2, the reflectors 1 are arranged in a matrix. it is however recommended to juxtapose several strips of reflectors according to FIG. 1, in order to obtain a planar network according to FIGS. 3 and 5. This arrangement in a matrix serves as a support for the light-emitting diodes arranged in the reflectors.

il est recommandé de produire des bandes de réflecteurs relative~ ment longues, puis de les découper à la longueur voulue. Des bandes de contact 4 sont disposées entre les bandes de réflecteurs des réseaux selon figures 3 et 5, pour la connexion des diodes électro- luminescentes 3. Dans l'exemple de réalisation selon figures 3 et 5, les bandes de contact 4 présentent des élargissements 5 servant de surfaces de contact. La connexion des diodes électroluminescentes 2 s'effectue à l'aide de fils 6 disposés entre les électrodes des diodes 2 et les surfaces de contact 5. tes fils 6 sont fixés par liaison par exemple. it is recommended to produce relatively long reflector strips, then cut them to the desired length. Contact strips 4 are arranged between the strips of array reflectors according to FIGS. 3 and 5, for the connection of light-emitting diodes 3. In the embodiment according to FIGS. 3 and 5, the contact strips 4 have enlargements 5 serving as contact surfaces. The connection of the light-emitting diodes 2 is carried out using wires 6 arranged between the electrodes of the diodes 2 and the contact surfaces 5. your wires 6 are fixed by connection for example.

Comme le montre la figure 4, les bandes de réflecteurs et les bandes de contact 4 sont de préférence disposées sur un support 7. As shown in FIG. 4, the reflector strips and the contact strips 4 are preferably placed on a support 7.

Ce dernier doit être aussi souple que po#ssible, afin de permettre l'adaptation du réseau plan de diodes électroluminescentes même sur des objets bombés, tels que des ailes de voiture. Lorsque plusieurs bandes de réflecteurs sont réunies en matrice, comme dans- le cas de la figure 5 par exemple, elles comportent avantageusement une embase ou support commun 7, qui doit également présenter une certaine flexi bilité. L'embase 7 est de préférence réalisée en matière plastique, tant pour les bandes de réflecteurs individuelles- que pour la disposition en matrice. The latter must be as flexible as possible, in order to allow the adaptation of the plane array of light-emitting diodes even on bulging objects, such as car fenders. When several strips of reflectors are joined in a matrix, as in the case of FIG. 5 for example, they advantageously comprise a base or common support 7, which must also have a certain flexibility. The base 7 is preferably made of plastic, both for the strips of individual reflectors and for the arrangement in matrix.

Comme le montre la figure 4, les diodes électroluminescentes sont avantageusement recouvertes sur la face supérieure du réseau. As shown in Figure 4, the light emitting diodes are advantageously covered on the upper face of the network.

Le recouvrement 8, présentant de préférence une forme lenticulaire dans la zone des diodes élec#troluminescentes ou des réfleeteurs pour accroître l'intensité lumineuse, est transparent.The covering 8, preferably having a lenticular shape in the region of the LEDs or the reflectors to increase the light intensity, is transparent.

Bien entendu, diverses modifications peuvent etre apportées par l'homme de l'art au principe et aux dispositifs qui viennent d'être décrits uniquement à titre d'exemples non limitatifs, sans sortir du cadre de l'invention.  Of course, various modifications can be made by those skilled in the art to the principle and to the devices which have just been described only by way of nonlimiting examples, without departing from the scope of the invention.

Claims (10)

Revend icat ionsResell icat ions 1. Réseau plan de diodes électroluminescentes, caractérisé en ce que le support des diodes électroluminescentes comprend de nombreux réflecteurs, dans lesquels sont disposées les diodes électroluminescentes; et les réflecteurs sont réunis en bande ou en matrice.1. Planar array of light emitting diodes, characterized in that the support of light emitting diodes comprises numerous reflectors, in which the light emitting diodes are arranged; and the reflectors are united in strip or matrix. 2. Réseau plan de diodes électroluminescentes selon revendication 1, caractérisé en ce que les réflecteurs d'une bande ou d'une matrice sont reliés.2. flat array of light-emitting diodes according to claim 1, characterized in that the reflectors of a strip or of a matrix are connected. 3. Réseau plan de diodes électroluminescentes selon une des revendications 1 et 2, caractérisé par la juxtaposition de plusieurs bandes de réflecteurs. 3. flat array of light emitting diodes according to one of claims 1 and 2, characterized by the juxtaposition of several bands of reflectors. 4. Réseau plan de diodes électroluminescentes selon revendication 3, caractérisé en ce que des bandes de contact sont disposées entre les bandes de réflecteurs.4. flat array of light-emitting diodes according to claim 3, characterized in that contact strips are arranged between the strips of reflectors. 5. eau plan de diodes électroluminescentes selon revendication 4, caractérisé en ce que la connexion des diodes électroluminescentes s'effectue par des fíls les reliant aux bandes de contact.5. flat water of light emitting diodes according to claim 4, characterized in that the connection of the light emitting diodes is effected by wires connecting them to the contact strips. 6. Réseau plan de diodes eleetroluminascentes selon une quelconque des revendications 1 à S, caractérisé en ce que les bandes ou matrices de réflecteurs sont réalisées atz une seule pièce.6. flat array of light-emitting diodes according to any one of claims 1 to S, characterized in that the strips or arrays of reflectors are made at one piece. 7. Réseau plan de diodes électroluminescentes selon une quelconque des revendications 1 à 6, caractérisé on ce que les bandes ou matrices de réflecteurs sont disposées sur un support. 7. flat array of light-emitting diodes according to any one of claims 1 to 6, characterized in that the strips or arrays of reflectors are arranged on a support. 8. Réseau plan de diodes électroluminessentes selon revendication 7, caractérisé en ce que le support est réalisé dans une matière plastique.8. flat array of light-emitting diodes according to claim 7, characterized in that the support is made of a plastic material. 9. Réseau plan de diodes électroluminescentes selon une quelconque des revendications 1 à 8, caractérisé en ce qutun revetement est disposé sur les réflecteurs et sur les diodes électroluminescentes situées dans ces derniers.9. flat array of light emitting diodes according to any one of claims 1 to 8, characterized in that a coating is disposed on the reflectors and on the light emitting diodes located in the latter. 10. Réseau plan de diodes électroluminescentes selon revendication 9, caractérisé en ce que les revetements présentent une forme lenticu loir, 10. flat array of light-emitting diodes according to claim 9, characterized in that the coatings have a lenticular shape,
FR8220789A 1981-12-10 1982-12-10 LIGHT EMITTING DIODES PLAN ARRAY Expired FR2518317B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3148843A DE3148843C2 (en) 1981-12-10 1981-12-10 Multiple light emitting diode arrangement

Publications (2)

Publication Number Publication Date
FR2518317A1 true FR2518317A1 (en) 1983-06-17
FR2518317B1 FR2518317B1 (en) 1986-09-19

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FR (1) FR2518317B1 (en)

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DE3148843C2 (en) 1986-01-02
FR2518317B1 (en) 1986-09-19
DE3148843A1 (en) 1983-06-23

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