EP1971191B1 - Electric/electronic device for generating colour depictions - Google Patents

Electric/electronic device for generating colour depictions Download PDF

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Publication number
EP1971191B1
EP1971191B1 EP20070025060 EP07025060A EP1971191B1 EP 1971191 B1 EP1971191 B1 EP 1971191B1 EP 20070025060 EP20070025060 EP 20070025060 EP 07025060 A EP07025060 A EP 07025060A EP 1971191 B1 EP1971191 B1 EP 1971191B1
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Prior art keywords
printed circuit
module
led
correction data
electrical
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EP20070025060
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German (de)
French (fr)
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EP1971191A2 (en )
EP1971191A3 (en )
Inventor
Volker Grosch
Thomas Dipl.-Ing. Grossen
Frank Dipl.-Ing. Nockermann
Henning Dipl.-Ing. Marquardt
Matthias Donat
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Insta Elektro GmbH and Co KG
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Insta Elektro GmbH and Co KG
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B33/00Electroluminescent light sources
    • H05B33/02Details
    • H05B33/08Circuit arrangements not adapted to a particular application
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B33/00Electroluminescent light sources
    • H05B33/02Details
    • H05B33/08Circuit arrangements not adapted to a particular application
    • H05B33/0803Circuit arrangements not adapted to a particular application for light emitting diodes [LEDs] comprising only inorganic semiconductor materials
    • H05B33/0842Circuit arrangements not adapted to a particular application for light emitting diodes [LEDs] comprising only inorganic semiconductor materials with control
    • H05B33/0857Circuit arrangements not adapted to a particular application for light emitting diodes [LEDs] comprising only inorganic semiconductor materials with control of the color point of the light
    • H05B33/086Circuit arrangements not adapted to a particular application for light emitting diodes [LEDs] comprising only inorganic semiconductor materials with control of the color point of the light involving set point control means

Description

  • Die vorliegende Erfindung geht von einer gemäß Oberbegriff des Hauptanspruches konzipierten elektrischen/elektronischen Einrichtung zur Erzeugung von Farbdarstellungen in größeren Anordnungen mit mehreren, jeweils die drei Primärfarben (RGB) erzeugenden LED-Anordnungen aus. The present invention proceeds from a designed according to the preamble of the main claim electrical / electronic means for forming color images in large arrays with a plurality of each of the three primary colors (RGB) forming LED assemblies.
  • Derartige elektrische/elektronische Einrichtungen sind insbesondere zur Erzeugung eines homogenen Farbeindruckes innerhalb größerer Anordnungen mit mehreren LED-Anordnungen vorgesehen. Such electrical / electronic devices are provided in particular for generating a homogeneous color impression within larger assemblies having a plurality of LED arrays. Solche größeren Anordnungen können z. Such larger devices such can. B. als flächig und/oder räumlich ausgeführte Leuchten, Anzeigeeinheiten, Videowände usw. gestaltet sein. B. lamps constructed as flat and / or spatially, display units, video walls to be designed and so on. Wichtig ist dabei oftmals, dass für das menschliche Auge nicht nur ein homogener Farbeindruck entsteht, sondern dass die einzelnen Farben auch möglichst gesättigt dargestellt werden können. The important thing is often that not just a homogeneous color impression for the human eye, but that the individual colors can be displayed saturated also possible.
  • Durch die Druckschrift MCS zum Abgleich der Farbwiedergabe der Firma MAZeT GmbH aus dem Jahr 2005, "Einsatz von RGB Farbsensoren zum Abgleich der Farbwiedergabe bei Bildschirmen" ist ein Stand der Technik gemäß Oberbegriff der beiden Hauptansprüche bekannt geworden. By document MCS for adjusting the color reproduction of the company MAZeT GmbH in 2005, "Use of RGB color sensors to calibrate the color reproduction in monitors" has disclosed a state of the art according to the preamble of the main claims. Dabei ist der entsprechende Abgleich darauf begründet, dass vorher durch eine lichttechnische Messung für jede einzelne, die Primärfarben erzeugende LED-Anordnung der farbige Lichteindruck ermittelt wird. Here, the corresponding adjustment is based on the fact that the previously colored light impression is determined by a photometric measurement for each of the primary colors producing LED array. Zumindest eine LED-Anordnung kann dabei als ein die drei Primärfarben (RGB) erzeugender Dreifarbe-LED-Chip ausgeführt sein. At least one LED array can be designed as a three primary colors (RGB) generating Three color LED chip. Mittels der aus der Messung resultierenden Korrekturdaten werden dann die Betriebsparameter (Bestromung) für alle LED-Elemente der LED-Anordnungen derart angepasst, so dass über die gesamte Anordnung ein homogener Farbeindruck für das menschliche Auge entsteht. By means of the results from the measurement correction data operating parameters (current supply) are then adjusted for all of the LED elements of the LED arrays in such a way so that the entire arrangement of a homogeneous color impression for the human eye is produced. Prinzipbedingt wird durch eine solche Korrektur jedoch der Bereich der darstellbaren Farben hinsichtlich ihrer Sättigung eingeschränkt, da für jede der drei Primärfarben (RGB) auf dasjenige LED-Element der LED-Anordnungen Rücksicht genommen werden muss, dessen jeweilige Primärfarbe die schlechteste Abbildungsqualität aufweist. Due to the principle, however, the range of colors that is constrained with respect to their saturation by such a correction, as for each of the three primary colors (RGB) to be made to the one LED element of the LED arrays regardless whose respective primary color having the worst image quality. Weil sich dies insbesondere bei größeren Anordnungen nachteilig auf eine satte Darstellung der einzelnen Primärfarben (RGB) bzw. der damit erzeugten Mischfarben auswirkt, ist dies für viele Anwendungen bei denen es auf eine hohe Qualität hinsichtlich der Farbdarstellung mit gesättigten Farben ankommt nicht zu akzeptieren. Because this affects particularly with larger arrangements detrimental to a whopping representation of each primary color (RGB) or the mixed colors produced thereby, this is where it comes down to a high quality in terms of color reproduction with saturated colors for many applications do not accept. Oftmals lässt bei größeren Anordnungen auch die Erzeugung eines gleichmäßigen Lichtintensitätseindruck zu wünschen übrig, was insbesondere bei hochwertigen Anwendungen ebenfalls nicht akzeptabel ist. Often leaves in larger arrangements and the creation of a uniform light intensity impression to be desired, which also is not acceptable especially in high-value applications.
  • Des weiteren ist durch die Furthermore, through the DE 20 2006 014 351 U1 DE 20 2006 014 351 U1 eine elektrische/elektronische Einrichtung bekannt geworden, welche zumindest eine Leiterplatte aufweist, die mit mehreren LED-Anordnungen bestückt ist. known an electrical / electronic device, which has at least one printed circuit board which is equipped with a plurality of LED arrays. Eine solche elektrische/elektronische Einrichtung ist mit einer Treiberschaltung ausgerüstet, über welche jedes einzelne LED-Element der LED-Anordnungen einzeln angesteuert werden kann, so dass zur Farbdarstellung die Möglichkeit besteht, jedes einzelne LED-Element der LED-Anordnungen durch eine entsprechende Bestromung hinsichtlich seiner farbigen Lichtabgabe zu beeinflussen. Such an electrical / electronic device is equipped with a driver circuit via which each LED element of the LED arrays may be individually controlled so that there is the possibility of producing color, each LED element of the LED arrays by a corresponding energization with respect to its color light output to influence.
  • Ausgehend von diesem Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine elektrische/elektronische Einrichtung zu schaffen, bei welcher zur Erzeugung von möglichst gesättigten Farben bei der Farbdarstellung die Auswirkungen von Korrekturen auf die nichtbeteiligten Primärfarben (RGB) so gering als möglich sind und gleichzeitig eine möglichst große Homogenität des von der Anordnung abgegebenen farbigen Lichteindrucks gewährleistet ist. Starting from this prior art, the present invention has for its object to provide an electrical / electronic device, wherein for generating saturated colors as possible in the color representation of the effects of corrections to the non-participating primary colors (RGB) as low as possible and are at the same time a large as possible homogeneity of the dispensed from the arrangement colored light impression is ensured.
  • Des weiteren soll durch eine erfindungsgemäße elektrische/elektronische Einrichtung die Aufgabe gelöst werden, dass die durch eine lichttechnische Messung ermittelten Korrekturdaten und Farbmesswerte auf einfache Art und Weise bei der Ansteuerung von größeren Anordnungen jederzeit bedarfsgerecht zur Verfügung gestellt werden können. Furthermore, the object is to be solved in that the correction data and color measurement values ​​determined by a photometric measurement can be made in a simple manner when controlling large arrays at any time available as required by an inventive electrical / electronic device.
  • Erfindungsgemäß wird diese Aufgabe durch die im Hauptanspruch angegebenen Merkmale gelöst. According to the invention this object is achieved by the features specified in the main claim.
  • Bei einer solchen Ausbildung ist besonders vorteilhaft, wenn eine zweite Korrektureinheit vorgesehen ist, welche zum Auslesen und zum Verarbeiten der Korrekturdaten der zu einem Modul gehörigen Leiterplatten zumindest einen weiteren Mikroprozessor aufweist, wobei in den Mikroprozessor der zweiten Korrektureinheit ein weiterer Algorithmus zur Steuerung des Lichtintensitätseindrucks implementiert ist, durch welchen je nach Korrekturdaten bzw. Farbmesswerte der einzelnen Leiterplatten eine Gewichtung derart vorgenommen wird, so dass die Leiterplatte, welche die geringste Lichtintensität aufweist, die resultierende Lichtintensität für das Modul vorgibt. In such an arrangement is particularly advantageous if a second correction unit is provided which at least comprises a further microprocessor for reading and processing the correction data corresponding to a module circuit boards, implements another algorithm for controlling the light intensity of impression in the microprocessor of the second correction unit is, by means of which a weighting is carried out in such a way, depending on the correction data and color measurement values ​​of the individual printed circuit boards so that the printed circuit board that has the lowest light intensity, which sets the resulting light intensity for the module. Somit ist gewährleistet, dass bei einem aus mehreren Leiterplatten bestehenden Modul ein möglichst gleichmäßiger Lichtintensitätseindruck erzeugt wird. This ensures that, with a comprising a plurality of circuit boards module, a uniform light intensity as possible impression is generated.
  • Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Gegenstandes sind in den Unteransprüchen angegeben. Further advantageous embodiments of the subject invention are specified in the dependent claims. Anhand zweier Ausführungsbeispiele sei die Erfindung im Prinzip näher erläutert. Reference to two embodiments, the invention in principle be explained in more detail. Dabei zeigt: In which:
  • Figur 1: Figure 1:
    prinziphaft ein Blockschaltbild mehrerer Leiterplatten, welche nacheinander einer lichttechnischen Messeinrichtung zugeordnet werden; principle by way of a block diagram of a plurality of printed circuit boards, which are sequentially allocated to a photometric measuring means;
    Figur 2: Figure 2:
    prinziphaft ein Blockschaltbild eines aus sechs Leiterplatten bestehenden Moduls; principle, a block diagram of a group consisting of six PCB module;
    Figur 3: Figure 3:
    prinziphaft ein Blockschaltbild eines Moduls, welches mehrere, jeweils sechs Leiterplatten aufweisende Unterbaugruppen aufweist. principle by way of a block diagram of a module having a plurality of, six circuit boards having subassemblies.
  • Wie aus den Figuren hervorgeht, besteht eine solche elektrische/elektronische Einrichtung zur Erzeugung gesättigter Farben für größere Anordnungen aus mehreren Leiterplatten 1, die jeweils mit mehreren LED-Anordnungen 2 bestückt sind. As is apparent from the figures, such an electrical / electronic device for generating saturated colors for larger arrays of a plurality of circuit boards 1 which are each equipped with a plurality of LED arrays. 2 Jede LED-Anordnung 2 ist zur Erzeugung der drei Primärfarben (RGB) Rot, Grün, Blau vorgesehen. Each LED array 2 is to generate the three primary colors (RGB), red, green, blue are provided. Um eine gute Farbwiedergabequalität zu gewährleisten ist jede LED-Anordnung 2 als Dreifarben-LED-Chip ausgebildet, welcher jeweils drei LED-Elemente aufweist. In order to ensure a good color rendering each LED array 2 is formed as a three-color LED chip, which has three LED elements. Jedes LED-Element ist zur Erzeugung einer der drei Primärfarben (RGB) vorgesehen. Each LED element is to generate one of the three primary colors (RGB) are provided. Zur Ansteuerung der LED-Anordnungen 2 ist eine -der Einfachheit halber nicht dargestellte- Treiberschaltung vorgesehen. For driving the LED arrays 2 is a -der for simplicity not provided dargestellte- driver circuit. Über die Treiberschaltung kann jedes einzelne LED-Element aller LED-Anordnungen 2 durch entsprechende Bestromung hinsichtlich seiner farbigen Lichtabgabe beeinflusst werden. Via the driver circuit each LED element of all the LED arrays 2 can be influenced by appropriate energization with respect to its color light emission. Somit ist es über die Treiberschaltung möglich für jedes LED-Element und damit für jede LED-Anordnung 2 den farbigen Lichteindruck einzustellen. Thus, it is possible via the driver circuit for each LED element and thus adjust the color impression of light for each LED array. 2 Zur lichttechnischen Vermessung einer jeden LED-Anordnung 2 ist eine lichttechnische Messeinrichtung LTM vorgesehen. For photometric measurement of each LED array 2 is a photometric measuring device LTM is provided. Nacheinander werden die Leiterplatten 1 der lichttechnischen Messeinrichtung LTM zugeführt, um die jeweils zugehörigen Farbmesswerte und Korrekturdaten ermitteln zu können. Successively, the printed circuit boards 1, the photometric measuring device LTM are supplied, to determine the respective associated measured color values ​​and correction data.
  • Wie des weiteren aus den Figuren hervorgeht, ist jede Leiterplatte 1 mit einer Anschlussschnittstelle 3 und mit einer Korrektureinheit 4 ausgerüstet. Further, as apparent from the figures, each circuit board 1 is equipped with a connection interface 3 and a correcting unit. 4 Jede Korrektureinheit 4 weist einen Mikroprozessor 5 und einen Speicher 6 auf. Each correction unit 4 includes a microprocessor 5, and a memory. 6
  • Beim Stand der Technik ist der Abgleich darauf begründet, dass vorher durch eine lichttechnische Messung für jede einzelne, die Primärfarben erzeugende LED-Anordnung der farbige Lichteindruck ermittelt wird. In the prior art the adjustment is based on the fact that the previously colored light impression is determined by a photometric measurement for each of the primary colors producing LED array. Mittels der aus der Messung resultierenden Korrekturdaten werden dann die Betriebsparameter (Bestromung) für alle LED-Elemente der LED-Anordnungen derart angepasst, so dass über die gesamte Anordnung ein homogener Farbeindruck für das menschliche Auge entsteht. By means of the results from the measurement correction data operating parameters (current supply) are then adjusted for all of the LED elements of the LED arrays in such a way so that the entire arrangement of a homogeneous color impression for the human eye is produced. Prinzipbedingt wird durch eine solche Korrektur jedoch der Bereich der darstellbaren Farben hinsichtlich ihrer Sättigung eingeschränkt, da für jede der drei Primärfarben (RGB) auf dasjenige LED-Element der LED-Anordnungen Rücksicht genommen werden muss, dessen jeweilige Primärfarbe die schlechteste Abbildungsqualität aufweist. Due to the principle, however, the range of colors that is constrained with respect to their saturation by such a correction, as for each of the three primary colors (RGB) to be made to the one LED element of the LED arrays regardless whose respective primary color having the worst image quality.
  • Wie insbesondere aus In particular from Figur 1 Figure 1 hervorgeht, wird jede Leiterplatte 1 zunächst einer lichttechnischen Messeinrichtung LTM zugeführt, über welche für jede auf der Leiterplatte 1 vorhandene LED-Anordnung 2 der farbige Lichteindruck gemessen wird. seen, each circuit board 1 is first fed to a photometric measuring device LTM over which the color impression of light is measured for each existing on the circuit board 1 LED array. 2 Auf einer Leiterplatte 1 sind neun LED-Anordnungen 2 vorhanden, deren LED-Elemente hinsichtlich der drei Primärfarben rot, grün und blau (RGB) durch eine nicht dargestellte Treiberschaltung jeweils einzeln ansteuerbar sind. On a circuit board 1 are available nine LED arrays 2, the LED elements are in terms of the three primary colors red, green and blue (RGB) by an unillustrated drive circuit are each individually controllable. Nacheinander wird für jede Leiterplatte 1 durch die lichttechnische Messeinrichtung LTM für jede der jeweils neun LED-Anordnungen 2 der farbige Lichteindruck ermittelt und dann die aus der Messung resultierenden Korrekturdaten bzw. Farbmesswerte abgeleitet. Successively, the colored light impression is determined, and then the resultant derived from the measurement correction data or color values ​​for each printed circuit board 1 by the photometric measuring device LTM for each of the nine LED arrays. 2 Auf jeder Leiterplatte 1 ist ein zur Korrektureinheit 4 gehöriger mit dem Speicher 6 in Verbindung stehender Mikroprozessor 5 vorhanden. On each printed circuit board 1, an associated standing for correcting unit 4 to the memory 6 in conjunction microprocessor 5 is present. Zur Steuerung des farbigen Lichteindrucks wird zusätzlich zu den Korrekturdaten und den Farbmesswerten ein Algorithmus berücksichtigt, welcher in den Mikroprozessor 5 der Korrektureinheit 4 implementiert ist. To control the colored light impression, an algorithm is taken into account in addition to the correction data and the color measurement values, which is implemented in the microprocessor 5 of the correction unit. 4 Durch den Algorithmus wird je nach Zusammensetzung des farbigen Lichteindrucks aus den Anteilen der drei Primärfarben (RGB) Rot, Grün und Blau eine Gewichtung der im Speicher 6 abgelegten Korrekturdaten bzw. Farbmesswerte derart vorgenommen, so dass einzelne der die drei Primärfarben (RGB) darstellenden LED-Elemente der LED-Anordnungen 2 entsprechend des Algorithmus mit den gewichteten Korrekturdaten beaufschlagt werden. The algorithm green and blue, a weighting of the data stored in the memory 6. correction data and color measurement values ​​depending on the composition of the colored light impression from the proportions of the three primary colors (RGB) Red, made in such a way so that individual ones of the three primary colors (RGB) representing LED elements of the LED arrays are 2 applied in accordance with the algorithm using the weighted correction data. Eine lichttechnische Anpassung für jedes einzelne LED-Element der neun LED-Anordnungen 2 erfolgt also immer mit Betriebsparametern bzw. einer Bestromung, welche unter Berücksichtigung der Korrekturdaten und des Algorithmus berechnet wurden. A photometric adaptation for each individual LED element of the nine LED arrays 2 thus always carried out with operating parameters and current is supplied, which have been calculated taking into account the correction data and the algorithm. Somit ist gewährleistet, dass möglichst gesättigte Farben bei der Farbdarstellung erzeugt werden, weil die Auswirkungen der Korrekturen auf die nichtbeteiligten Primärfarben (RGB) durch den Algorithmus so gering als möglich gehalten sind. This ensures that saturated colors as possible are generated in the color representation, because the effects of corrections to the non-participating primary colors (RGB) by the algorithm are kept as low as possible.
  • Die Korrekturdaten und die durch die Messung ermittelten Farbmesswerte sind hinsichtlich des farbigen Lichteindrucks wieder auslesbar in dem Speicher 6 der Korrektureinheit 4 abgelegt. The correction data and the color measurement values ​​obtained by the measurement are stored in terms of the colored light impression again read out in the memory 6 of the correction unit. 4 Jede Leiterplatte 1 ist zudem zur Weiterleitung sowohl der im Speicher 6 abgelegten Korrekturdaten als auch der im Speicher 6 abgelegten Farbmesswerte mit einer Anschlussschnittstelle 3 versehen. Each circuit board 1 is also provided for forwarding both the correction data stored in the memory 6 and stored in memory 6 color measurement values ​​having a connection interface. 3 Jede Anschlussschnittstelle 3 steht zu diesem Zweck wiederum mit dem zugehörigen Mikroprozessor 5 und dem zugehörigen Speicher 6 elektrisch in Verbindung. Each terminal interface 3 for this purpose is in turn associated with the microprocessor 5 and the associated memory 6 are electrically connected.
  • Wie insbesondere aus In particular from Figur 2 Figure 2 hervorgeht, ist eine elektrische/elektronische Einrichtung zur Erzeugung von Farbdarstellungen in größeren Anordnungen aus einem sechs Leiterplatten 1 aufweisenden Modul M gebildet. is apparent, an electric / electronic device for forming color images in large arrays of a six circuit boards 1 having module M is formed. Auf dem Modul M ist eine mit allen Leiterplatten 1 elektrisch in Verbindung stehende zweite Korrektureinheit 7 angeordnet, die zum Auslesen und zum Verarbeiten der Korrekturdaten sowie der Farbmesswerte aller zum Modul M gehörigen Leiterplatten 1 einen weiteren Mikroprozessor 8 und einen weiteren Speicher 9 aufweist. On the module M with all the circuit boards 1 are electrically related second correcting unit 7 is arranged, which has a further microprocessor 8 and a further memory 9 for reading out and processing the correction data and the color measurement values ​​of all associated with the module M circuit boards. 1 In den weiteren Mikroprozessor 8 der zweiten Korrektureinheit 7 ist ein weiterer Algorithmus zur Steuerung des Lichtintensitätseindrucks implementiert. In the further microprocessor 8 of the second correction unit 7, a further algorithm for controlling the light intensity impression is implemented. Durch den weiteren Algorithmus wird eine Gewichtung der Korrekturdaten bzw. Farbmesswerte derart vorgenommen, so dass die Leiterplatte 1, welche die geringste Lichtintensität aufweist, die resultierende Lichtintensität für alle Leiterplatten 1 des Moduls M vorgibt. By the further algorithm, a weighting of the correction data and color measurement values ​​is carried out in such a way so that the circuit board 1, which has the lowest light intensity, which sets the resulting light intensity for all the circuit boards 1 of the module M. Somit ist gewährleistet, dass eine möglichst große Homogenität der von der Anordnung bzw. dem Modul M abgegebenen Lichtintensität realisiert ist. This ensures that the greatest possible homogeneity of the output from the arrangement or the module M light intensity is realized. Weil jede der neun LED-Anordnungen 2 als ein die drei Primärfarben (RGB) erzeugender Dreifarben-LED-Chip ausgeführt und die Treiberschaltung zur Ansteuerung eines jeden einzelnen LED-Elementes der Dreifarben-LED-Chips geeignet ist, ergibt sich für den Betrachter zudem ein farbiger Lichteindruck mit einer besonders guten Abbildungsqualität. Because each of the nine LED arrays 2 implemented as a three primary colors (RGB) generating three-color LED chip and the driver circuit is suitable for controlling each individual LED element of the three-color LED chips, the result for the viewer also a colored light impression with a particularly good image quality.
  • Wie insbesondere aus In particular from Figur 3 Figure 3 hervorgeht, besteht eine solche elektrische/elektronische Einrichtung zur Erzeugung von Farbdarstellungen in größeren Anordnungen aus einem Modul M, welches aus einer Vielzahl, jeweils sechs Leiterplatten 1 aufweisenden Unterbaugruppen 10 besteht. emerges, there is such an electric / electronic device for forming color images in large arrays of a module M which having a plurality, six circuit boards 1 subassembly 10 consists. Die zweite Korrektureinheit 7 ist hierbei in einen an das Modul M anschließbaren bzw. mit allen Unterbaugruppen 10 elektrisch in Verbindung stehenden Personal Computer PC integriert. The second correcting unit 7 is in this case integrated in a connectable to module M or with all subassemblies 10 electrically communicating personal computer PC. Durch einen solchen Aufbau lassen sich auf einfache Art und Weise auch besonders große elektrische/elektronische Einrichtungen zur Erzeugung von Farbdarstellungen bedarfsgerecht ansteuern. By such a structure in a simple manner and particularly large electrical / electronic equipment for production of color displays can be controlled as needed.

Claims (7)

  1. Electrical/electronic facility for generating colour representations in larger systems having a plurality of LED arrays provided on at least one printed circuit board the LED elements of which are each individually controllable by a driver circuit as regards the three primary colours red, green and blue (RGB), with the coloured light impression of each individual LED array of a printed circuit board being ascertained by a photometric device and the correction data resulting from this measurement then being deduced and, subsequently, the coloured light impression being adjusted by a correction unit provided on the printed circuit board by means of applying energy to each individual LED element of the LED arrays corresponding to the correction data, and with a microprocessor pertaining to the correction unit and connected to a memory being provided on each printed circuit board, characterised in that, for the purpose of controlling the coloured light impression, an algorithm is implemented in the microprocessor (5) of the correction unit (4) by way of which a weighting of the correction data is undertaken in dependence on the composition of the coloured light impression arising from the proportions of the three primary colours (RGB) red, green and blue, in such a manner that preferably saturated colours emerge for the colour representation and that for this purpose individual LED elements of the LED arrays (2) representing the three primary colours (RGB) are subjected to the weighted corrections corresponding to the algorithm and that this correction data is filed in the memory (6) pertaining to the correction unit (4).
  2. Electrical/electronic facility according to Claim 1, characterised in that the correction data and the colorimetric values ascertained by means of the photometric measurement are filed in the memory (6) of the correction unit (4) so that they can be read out again, and that each printed circuit board (1) has at least one connection interface (3) which is electrically connected to the microprocessor (5) and the memory (6) for the purpose of forwarding both the correction data filed in the memory (6) and the colorimetric values filed in the memory (6).
  3. Electrical/electronic facility according to Claim 1 or Claim 2, characterised in that at least two printed circuit boards (1) are combined to a module (M) and that a second correction unit (7) is allocated to the module (M) that has at least one further microprocessor (8) for reading out and processing the correction data and colorimetric values of all the printed circuit boards (1) pertaining to the module (M), and that a further algorithm for controlling the light intensity impression is implemented in the further microprocessor (8) by way of which a weighting of the correction data and colorimetric values is undertaken in such a manner that the printed circuit board (1) that has the lowest light intensity determines the resulting light intensity for the module (M).
  4. Electrical/electronic facility according to any of Claims 1 to 3, characterised in that at least one LED array (2) is executed as a three-colour LED chip generating the three primary colours (RGB), and that a driver circuit is provided which is suitable for triggering each individual LED element of the three-colour LED chip.
  5. Electrical/electronic facility according to any of Claims 1 to 4, characterised in that the second correction unit (7) is provided on the module (M).
  6. Electrical/electronic facility according to any of Claims 1 to 4, characterised in that the second correction unit (7) is integrated in a personal computer (PC) which can be connected to the module (M).
  7. Electrical/electronic facility according to any of Claims 1 to 6, characterised in that the module (M) comprises a plurality of sub-assemblies (10), each of which has at least two printed circuit boards (1).
EP20070025060 2007-03-13 2007-12-22 Electric/electronic device for generating colour depictions Active EP1971191B1 (en)

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EP1971191A3 true EP1971191A3 (en) 2012-09-12
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DE102009030733B4 (en) * 2009-06-26 2015-11-05 Diehl Aerospace Gmbh Method and apparatus for color-variable illumination
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EP1971191A3 (en) 2012-09-12 application
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