WO2000060562A1 - High resolution display screen for an led screen - Google Patents

High resolution display screen for an led screen Download PDF

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Publication number
WO2000060562A1
WO2000060562A1 PCT/FR2000/000663 FR0000663W WO0060562A1 WO 2000060562 A1 WO2000060562 A1 WO 2000060562A1 FR 0000663 W FR0000663 W FR 0000663W WO 0060562 A1 WO0060562 A1 WO 0060562A1
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Prior art keywords
leds
pixels
led
control system
green
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PCT/FR2000/000663
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French (fr)
Inventor
Patrice Litvine
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Patrice Litvine
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Priority to AU33000/00A priority Critical patent/AU3300000A/en
Publication of WO2000060562A1 publication Critical patent/WO2000060562A1/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes

Definitions

  • the present invention relates to LED screens (or display boards) (light emitting diodes). LED screens have been designed to meet the need to present images in places where the intensity of ambient light is high (usually outdoors in daylight, or indoors in bright places).
  • This equipment consists on the one hand of a panel whose frontage of black color is equipped with a very large quantity of LED, allowing to make appear the image, and on the other hand of an electronic control system which receives d 'a source (video recorder for example) information concerning the image to be reproduced.
  • the electronic system transforms the image information it receives into an electrical intensity emission intended for each LED, allowing it to light up with the desired intensity.
  • each LED at each instant T (for example 120 instructions per second when the system frequency is 120 Hertz) lights up with such intensity, allowing, taking into account the intensity received by its neighboring LEDs associated in the same pixel, obtain the image point of the desired color and intensity.
  • White is obtained by switching on all the LEDs with high intensity
  • black is obtained by switching off all the LEDs.
  • R red
  • G green
  • B blue
  • the technique now makes it possible to constitute a pixel with only 1 red LED + 1 green LED + 1 blue LED.
  • the main object of the present invention therefore is to remedy these drawbacks and to do this, it has for ob] ⁇ t a system which is essentially characterized in that it comprises on the one hand a panel on which the LEDs are arranged a particular way, and on the other hand a particular LED control system
  • the LEDs used have characteristics such that they make it possible to form a pixel when the centers of the LEDs of a tri-color trio form an equilateral triangle
  • the LEDs according to the present invention are arranged according to the following principle as illustrated in FIG. 1 on each horizontal line, the LEDs appear in the following order
  • Each line is arranged relative to the previous line so that each LED is located exactly below the middle of the interval which separates the two LEDs of complementary colors from the top line
  • Each line is also arranged in relation to the previous line so that the vertical distance which separates the horizontal axes of two consecutive lines is equal to the horizontal distance which separates the centers of two neighboring LEDs located on the same line multiplied by the square root half of three, a value very close to 0.866 So, thanks to this particular arrangement of the LEDs on the screen, each LED is close to 6 pairs of LEDs of the two complementary colors and each LED is equidistant from each of its color neighbors different rs, thus making it possible to form 6 different pixels around an LED, as illustrated on the figure 1 This LED arrangement is applied to the entire LED control screen
  • the electronic LED control system is designed such that each LED is controlled according to the pixel or pixels which it is necessary to actuate.
  • This system is programmed to scan the image in a precise order of appearance of pixels Depending on the frequency used, the most appropriate sequence will be chosen, allowing all the pixels to be actuated with the same frequency
  • Each pixel must be actuated with a frequency at least equal to 24 Hertz (minimum frequency allowing, thanks to persistence of the retina, eliminating flickering phenomena in the image in a dimly lit environment (this threshold increases with the level of ambient light)
  • each LED can intervene in 6 different pixels.
  • several different pixel control sequences are possible. They influence the resolution and the luminance, and each require a specific frequency.
  • the active pixels are sufficiently distant from each other so that there is no interference between them
  • the resolution of the image thus produced is therefore maximum
  • 40% of the LEDs are activated, which causes a decrease in luminance of the screen compared to the luminance of a traditional LED screen. This decrease in luminance can be compensated for by using more powerful LEDs if necessary.
  • the active pixels are close enough to each other that there is formed between them non-controlled interpixels
  • the color and the brightness of each mter-pixel thus formed results from the average of the colors and brightness of the controlled pixels which are contiguous to it
  • These uncontrolled mter-pixels are automatically consistent with the image to be reproduced
  • the resolution of the image thus produced is therefore slightly lower than in sequence 15, but much higher than that of a traditional screen A at each instant t, 100% of the LEDs are actuated, which does not cause any drop in luminance of the screen compared to the luminance of a traditional LED screen
  • Each LED belonging simultaneously to six different pixels, must be controlled so that it displays an intensity equal to the average of the values controlled by each of these six pixels.
  • the resolution of the image thus produced is therefore slightly lower than in sequence 15, but much higher than that of a traditional screen.

Abstract

The invention relates to a device enabling the number of pixels to be multiplied by 6 in comparison with a conventional system for the same number of LEDs. The inventive device comprises a panel on which the LEDs are disposed in such a way as to enable each LED to participate, either successively or simultaneously, in 6 different pixels, and an adapted electronic control system.

Description

Système d'affichage hante résolution pour Ecran à LED. La présente invention concerne les écrans (ou tableaux d'affichage) à LED (diodes électroluminescentes). Les écrans à LED ont été conçus pour répondre au besoin de présenter des images dans des lieux où l'intensité de la lumière ambiante est importante (généralement à l'extérieur en plein jour, ou en intérieur dans des lieux très éclairés).Haunting resolution display system for LED screen. The present invention relates to LED screens (or display boards) (light emitting diodes). LED screens have been designed to meet the need to present images in places where the intensity of ambient light is high (usually outdoors in daylight, or indoors in bright places).
Ce matériel consiste d'une part en un panneau dont la façade de couleur noire est équipé d'une très grande quantité de LED, permettant de faire apparaître l'image, et d'autre part d'un système électronique de commande qui reçoit d'une source (magnétoscope par exemple) les informations concernant l'image à reproduire. Le système électronique transforme l'information image qu'il reçoit en une émission d'intensité électrique destinée à chaque LED, lui permettant de s'allumer avec l'intensité voulue. Ainsi chaque LED à chaque instant T (par exemple 120 instructions par seconde lorsque la fréquence du système est de 120 Hertz) s'allume avec telle intensité, permettant, compte tenu de l'intensité reçue par ses LED voisines associées dans le même pixel, d'obtenir le point d'image de la couleur et de l'intensité voulue. Le blanc est obtenu en allumant toutes les LED avec une intensité élevée, et le noir est obtenu en éteignant toutes les LED.This equipment consists on the one hand of a panel whose frontage of black color is equipped with a very large quantity of LED, allowing to make appear the image, and on the other hand of an electronic control system which receives d 'a source (video recorder for example) information concerning the image to be reproduced. The electronic system transforms the image information it receives into an electrical intensity emission intended for each LED, allowing it to light up with the desired intensity. Thus each LED at each instant T (for example 120 instructions per second when the system frequency is 120 Hertz) lights up with such intensity, allowing, taking into account the intensity received by its neighboring LEDs associated in the same pixel, obtain the image point of the desired color and intensity. White is obtained by switching on all the LEDs with high intensity, and black is obtained by switching off all the LEDs.
En l'état actuel de la technique, chaque pixel (point d'image) est constitué d'un ensemble de LED rouges (R) , vertes (G = green) et bleues (B) . La technique permet aujourd'hui de constituer un pixel avec seulement 1 LED rouge + 1 LED verte + 1 LED bleue. Chaque LED étant affectée définitivement à un pixel, on obtient donc dans le meilleur des cas 1 Pixel = 1 LED rouge + 1 LED verte + 1 LED bleue, soit 1 Pixel pour 3 LED.In the current state of the art, each pixel (image point) consists of a set of red (R), green (G = green) and blue (B) LEDs. The technique now makes it possible to constitute a pixel with only 1 red LED + 1 green LED + 1 blue LED. Each LED being definitively assigned to a pixel, we thus obtain in the best case 1 Pixel = 1 red LED + 1 green LED + 1 blue LED, that is to say 1 Pixel for 3 LEDs.
L'inconvénient de ces écrans à LED est qu'ils donnent une image dont la définition est faible à cause de la faible quantité de pixels. Il faut donc éloigner l'écran des spectateurs, et par conséquent produire des écrans uniquement de grandes dimensions, donc très coûteux. On peut augmenter la densité de pixels en réduisant la dimension des LED et/ou en les rapprochant le plus possible les unes des autres Dans ce cas on est limité techniquement par la dimension minimum d'une LED et de sa fixation sur l'écran De plus, une telle démarche engendrerait une augmentation considérable du prix d'un tel écranThe disadvantage of these LED screens is that they give an image whose definition is poor because of the small amount of pixels. It is therefore necessary to distance the screen from the spectators, and consequently to produce screens only of large dimensions, therefore very expensive. The pixel density can be increased by reducing the size of the LEDs and / or by bringing them as close as possible to each other. In this case, we are technically limited by the minimum size of an LED and its attachment to the screen. more, such an approach would generate a considerable increase in the price of such a screen
La présente invention a donc pour but principal de remédier a ces inconvénients et pour ce faire, elle a pour ob]βt un système qui se caractérise essentiellement en ce qu'il comporte d'une part un panneau sur lequel les LED sont disposées d'une manière particulière, et d'autre part un système particulier de commande des LED Les LED utilisées ont des caractéristiques telles qu'elles permettent de former un pixel lorsque les centres des LED d'un trio tricolore forment un triangle equilatéralThe main object of the present invention therefore is to remedy these drawbacks and to do this, it has for ob] βt a system which is essentially characterized in that it comprises on the one hand a panel on which the LEDs are arranged a particular way, and on the other hand a particular LED control system The LEDs used have characteristics such that they make it possible to form a pixel when the centers of the LEDs of a tri-color trio form an equilateral triangle
Disposition des LED sur le panneauLED arrangement on the panel
Les LED, selon la présente invention sont disposées selon le principe suivant comme illustré sur la figure 1 sur chaque ligne horizontale, les LED apparaissent dans l'ordre suivantThe LEDs according to the present invention are arranged according to the following principle as illustrated in FIG. 1 on each horizontal line, the LEDs appear in the following order
R G B R G B R G B , etc ( ou R B G R B G R B G, etc ) , dans lequel « R » = LED rouge, « G » = LED verte, « B » = LED bleue, et avec un mterval constant entre deux LED voisines Chaque ligne est disposée par rapport à la ligne précédente de telle sorte que chaque LED soit située exactement en dessous du milieu de l'interval qui sépare les deux LED de couleurs complémentaires de la ligne du dessus Chaque ligne est également disposée par rapport à la ligne précédente de telle sorte que la distance verticale qui sépare les axes horizontaux de deux lignes consécutives soit égal à la distance horizontale qui sépare les centres de deux LED voisines situées sur la même ligne multipliée par la moitié de racine carrée de trois, soit une valeur très proche de 0,866 Ainsi, grâce à cette disposition particulière des LED sur l'écran, chaque LED est voisine de 6 couples de LED des deux couleurs complémentaires et chaque LED est à égale distance de chacune de ses voisines de couleurs différentes, permettant ainsi de former 6 pixels différents autour d'une LED, comme cela est illustré sur la figure 1 Cette disposition des LED est appliquée à l'ensemble de l'écran Commande des LEDRGBRGBRGB, etc (or RBGRBGRBG, etc), in which "R" = red LED, "G" = green LED, "B" = blue LED, and with a constant mterval between two neighboring LEDs Each line is arranged relative to the previous line so that each LED is located exactly below the middle of the interval which separates the two LEDs of complementary colors from the top line Each line is also arranged in relation to the previous line so that the vertical distance which separates the horizontal axes of two consecutive lines is equal to the horizontal distance which separates the centers of two neighboring LEDs located on the same line multiplied by the square root half of three, a value very close to 0.866 So, thanks to this particular arrangement of the LEDs on the screen, each LED is close to 6 pairs of LEDs of the two complementary colors and each LED is equidistant from each of its color neighbors different rs, thus making it possible to form 6 different pixels around an LED, as illustrated on the figure 1 This LED arrangement is applied to the entire LED control screen
Le système de commande électronique des LED, selon la présente invention, est conçu de telle sorte que chaque LED est commandée selon le ou les pixels qu'il convient d'actionner Ce système est programmé pour balayer l'image selon un ordre précis d'apparition des pixels Selon la fréquence utilisée, on choisira la séquence la plus appropriée, permettant à tous les pixels d'être actionnés avec la même fréquence Chaque pixel doit être actionné avec une fréquence au moins égale à 24 Hertz (fréquence minimum permettant, grâce à la persistance rétinienne, d'éliminer les phénomènes de scintillement de l'image en ambiance peu éclairée Ce seuil augmente avec le niveau de luminosité ambiante)The electronic LED control system according to the present invention is designed such that each LED is controlled according to the pixel or pixels which it is necessary to actuate. This system is programmed to scan the image in a precise order of appearance of pixels Depending on the frequency used, the most appropriate sequence will be chosen, allowing all the pixels to be actuated with the same frequency Each pixel must be actuated with a frequency at least equal to 24 Hertz (minimum frequency allowing, thanks to persistence of the retina, eliminating flickering phenomena in the image in a dimly lit environment (this threshold increases with the level of ambient light)
Ainsi chaque LED, peut intervenir dans 6 pixels différents Compte tenu de cette disposition particulière des LED, plusieurs séquences différentes de commande des pixels sont possibles Elles influencent la résolution et la luminance, et nécessitent chacune une fréquence propreThus each LED can intervene in 6 different pixels. Given this particular arrangement of LEDs, several different pixel control sequences are possible. They influence the resolution and the luminance, and each require a specific frequency.
Des nombreuses séquences sont possibles Certaines séquences sont à proscrire car elles permettent la formation de pixels parasites constitués par seulement deux LED contigues appartenant à deux pixels différents II se forme ainsi entre ces deux LED un pixel dont la couleur et l'intensité lumineuse sont incohérents avec l'image à reproduire Parmi les séquences possibles, les plus intéressantes (parce qu'elles évitent la formation de pixels parasites) sont les suivantes - Séquence 15 Dans cette séquence, les différents pixels sont actionnés successivement selon un ordre précis (figure 3) Chaque pixel est actionné un temps sur 15 La fréquence de commande des pixels est donc 15 fois plus élevée que la fréquence de base minimum d'un écran à LED traditionnel A chaque instant t, les pixels actifs sont suffisamment éloignés les uns des autres pour qu'il n'y ait aucune interférence entre eux La résolution de l'image ainsi produite est donc maximale À chaque instant t, 40% des LED sont actionnées, ce qui engendre une baisse de luminance de l'écran par rapport à la luminance d'un écran à LED traditionnel On pourra compenser cette baisse de luminance en utilisant des LED plus puissantes si nécessaireNumerous sequences are possible Certain sequences are to be avoided because they allow the formation of parasitic pixels constituted by only two contiguous LEDs belonging to two different pixels II thus forms between these two LEDs a pixel whose color and light intensity are inconsistent with the image to be reproduced Among the possible sequences, the most interesting (because they avoid the formation of spurious pixels) are the following - Sequence 15 In this sequence, the different pixels are actuated successively in a precise order (Figure 3) Each pixel is activated one time out of 15 The pixel control frequency is therefore 15 times higher than the minimum basic frequency of a traditional LED screen. At any time t, the active pixels are sufficiently distant from each other so that there is no interference between them The resolution of the image thus produced is therefore maximum At each instant t, 40% of the LEDs are activated, which causes a decrease in luminance of the screen compared to the luminance of a traditional LED screen. This decrease in luminance can be compensated for by using more powerful LEDs if necessary.
- Séquence 6 Dans cette séquence, les différents pixels sont actionnés successivement selon un ordre précis (figure 4) Chaque pixel est actionné un temps sur 6 La fréquence de commande des pixels est donc 6 fois plus élevée que la fréquence de base minimum d'un écran à LED traditionnel- Sequence 6 In this sequence, the different pixels are actuated successively in a precise order (Figure 4) Each pixel is actuated one time out of 6 The pixel control frequency is therefore 6 times higher than the minimum basic frequency of one traditional LED screen
À chaque instant t, les pixels actifs sont suffisamment proches les uns des autres pour qu'il se forme entre eux des interpixels non commandés La couleur et la luminosité de chaque mter-pixel ainsi formé résulte de la moyenne des couleurs et luminosité des pixels commandés qui lui sont contigus Ainsi ces mter-pixels non commandés sont automatiquement cohérents avec l'image à reproduire La résolution de l'image ainsi produite est donc légèrement plus faible que dans la séquence 15, mais très supérieure à celle d'un écran traditionnel A chaque instant t, 100% des LED sont actionnées, ce qui n'engendre aucune baisse de luminance de l'écran par rapport à la luminance d'un écran à LED traditionnelAt each instant t, the active pixels are close enough to each other that there is formed between them non-controlled interpixels The color and the brightness of each mter-pixel thus formed results from the average of the colors and brightness of the controlled pixels which are contiguous to it Thus these uncontrolled mter-pixels are automatically consistent with the image to be reproduced The resolution of the image thus produced is therefore slightly lower than in sequence 15, but much higher than that of a traditional screen A at each instant t, 100% of the LEDs are actuated, which does not cause any drop in luminance of the screen compared to the luminance of a traditional LED screen
- Séquence 2 Dans cette séquence les différents pixels sont actionnés successivement selon un ordre précis (figure 5) Chaque pixel est actionné un temps sur 2 La fréquence de commande des pixels est donc 2 fois plus élevée que la fréquence de base minimum d'un écran a LED traditionnel Chaque LED, appartenant simultannément à trois pixels différent, devra être commandée de telle sorte qu'elle affiche une intensité égale à la moyenne des valeurs commandées par chacun de ces trois pixels- Sequence 2 In this sequence the different pixels are actuated successively in a precise order (Figure 5) Each pixel is actuated every second time The pixel command frequency is therefore twice as high as the minimum base frequency of a screen a traditional LED Each LED, belonging simultaneously to three different pixels, must be controlled so that it displays an intensity equal to the average of the values controlled by each of these three pixels
A chaque instant t les pixels actifs sont suffisamment proches les uns des autres pour qu'il se forme entre eux des interpixels non commandés La couleur et la luminosité de chaque mter-pixel ainsi forme resuite de la moyenne des couleurs et luminosité des pixels commandés qui lui sont contigus leur permettant ainsi d être cohérents avec 1 image a reproduire La resolution de 1 image ainsi produite est donc légèrement plus faible que dans la séquence 15, mais très supérieure a celle d'un écran traditionnelAt each instant t the active pixels are close enough to each other so that non-controlled interpixels are formed between them. The color and the brightness of each mter-pixel thus formed results from the average of the colors and brightness of the controlled pixels which they are contiguous thus allowing them to be consistent with 1 image to be reproduced The resolution of 1 image thus produced is therefore slightly more weak than in sequence 15, but much higher than that of a traditional screen
A chaque instant t 100% des LED sont actionnées, ce qui n'engendre aucune baisse de luminance de l'écran par rapport à la luminance d'un écran à LED traditionnelAt all times t 100% of the LEDs are activated, which does not cause any drop in luminance of the screen compared to the luminance of a traditional LED screen
- Séquence 1 Dans cette séquence, tous les pixels sont actionnés simultannément (figure 6) La fréquence de commande des pixels est donc identique à la fréquence de base minimum d'un écran à LED traditionnel- Sequence 1 In this sequence, all the pixels are actuated simultaneously (figure 6) The pixel control frequency is therefore identical to the minimum basic frequency of a traditional LED screen
Chaque LED, appartenant simultannément à six pixels différent, devra être commandée de telle sorte qu'elle affiche une intensité égale à la moyenne des valeurs commandées par chacun de ces six pixelsEach LED, belonging simultaneously to six different pixels, must be controlled so that it displays an intensity equal to the average of the values controlled by each of these six pixels.
La résolution de l'image ainsi produite est donc légèrement plus faible que dans la séquence 15, mais très supérieure à celle d'un écran traditionnelThe resolution of the image thus produced is therefore slightly lower than in sequence 15, but much higher than that of a traditional screen.
A chaque instant t, 100% des LED sont actionnées, ce qui n'engendre aucune baisse de luminance de l'écran par rapport à la luminance d'un écran à LED traditionnelAt any time t, 100% of the LEDs are activated, which does not cause any drop in luminance of the screen compared to the luminance of a traditional LED screen
On peut également choisir, par une programmation particulière du système de commande, de n'utiliser qu'une partie des série de pixels disponiblesOne can also choose, by a specific programming of the control system, to use only part of the series of available pixels
On obtient ainsi, par rapport à un système conventionnel (dans lequel un pixel est forme par 3 LED qui lui sont affectées de manière permanente, et donc dans lequel on obtient autant de pixels qu'on a de LED d'une couleur donnée) la possibilité de créer 6 fois plus de pixels pour le même nombre de LED On augmente donc ainsi la densité de pixels sans augmenter le nombre de LEDWe thus obtain, compared to a conventional system (in which a pixel is formed by 3 LEDs which are permanently assigned to it, and therefore in which we obtain as many pixels as there are LEDs of a given color) possibility to create 6 times more pixels for the same number of LEDs We therefore increase the pixel density without increasing the number of LEDs
On conçoit ainsi aisément que par comparaison avec un système conventionnel un tel système permet d'améliorer considérablement la qualité de l'image diffusée (résolution et remplissage de l'image) pour un très faible supplément de coût de fabrication Egalement, on conçoit aussi aisément qu'un tel système permet, à qualité d'image équivalente, d'obtenir des coûts de fabrication très réduits It is thus easily understood that, by comparison with a conventional system, such a system makes it possible to considerably improve the quality of the broadcast image (resolution and filling of the image) for a very low additional manufacturing cost. Also, it is also easy to imagine that such a system makes it possible, at equivalent image quality, to obtain very reduced manufacturing costs.

Claims

REVENDICATIONS
1) Dispositif pour réaliser des écrans ou panneaux d'affichage à LED destines à diffuser des images fixes ou animées, caractérisé en ce qu'il est équipé de LED dont les caractéristiques permettent de constituer un pixel avec seulement trois LED (une rouge + une verte + une bleue) et qu'il comporte une disposition particulière des LED permettant à chacune d'elles d'être voisine de six couples de LED de couleurs complémentaires permettant de former autour de chaque LED d'une couleur donnée, six trios tricolores1) Device for producing LED screens or display panels intended for broadcasting fixed or animated images, characterized in that it is equipped with LEDs whose characteristics make it possible to constitute a pixel with only three LEDs (one red + one green + one blue) and that it has a particular arrangement of LEDs allowing each of them to be close to six pairs of LEDs of complementary colors making it possible to form around each LED of a given color, six three-color trios
2) Dispositif selon la revendication 1 caractérisé en ce que sur une même ligne de LED, les LED sont disposées selon un ordre précis (rouge, verte, bleue, rouge, verte, bleue etc par exemple, ou rouge, bleue, verte rouge, bleue verte, etc ) , et deux lignes de LED consécutives sont disposées de telle sorte que chaque LED soit située exactement en dessous du milieu de l'mterval qui sépare les deux LED de couleurs complémentaires de la ligne du dessus, et chaque ligne est disposée par rapport à la ligne précédente de telle sorte que la distance verticale qui sépare les axes horizontaux de deux lignes consécutives soit égal à la distance horizontale qui sépare les centres de deux LED voisines situées sur la même ligne multipliée par la moitié de racine carrée de trois, soit une valeur très proche de 0 8662) Device according to claim 1 characterized in that on the same line of LEDs, the LEDs are arranged in a precise order (red, green, blue, red, green, blue etc. for example, or red, blue, green red, blue green, etc), and two consecutive LED lines are arranged so that each LED is located exactly below the middle of the mterval which separates the two LEDs of complementary colors from the top line, and each line is arranged with respect to the previous line so that the vertical distance between the horizontal axes of two consecutive lines is equal to the horizontal distance between the centers of two neighboring LEDs located on the same line multiplied by the square root of three , a value very close to 0 866
3) Dispositif selon la revendication 1 ou la revendication 2 caractérise en ce que le système électronique de commande est conçu pour commander successivement (selon un ordre pré-établi) ou simultannément certains pixels ou tous les pixels3) Device according to claim 1 or claim 2 characterized in that the electronic control system is designed to control successively (in a pre-established order) or simultaneously certain pixels or all the pixels
4) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que différentes configurations du système de commande sont possibles, engendrant chacune des caractéristiques différentes de 1 image obtenue (résolution et luminance)4) Device according to any one of the preceding claims, characterized in that different configurations of the control system are possible, each generating different characteristics of 1 image obtained (resolution and luminance)
5) Dispositif selon 1 une quelconque des revendications précédentes caractérisé en ce que dans certains configurations du système de commande une même LED qui peut mtevenir dans la constitution de plusieurs pixels commandes contigus sera commandée de telle sorte qu'elle affiche une intensité égale à la moyenne des valeurs commandées par chacun de ces pixels.5) Device according to 1 any one of the preceding claims characterized in that in certain configurations of the control system the same LED which can mtevenir in the constitution of several pixels adjacent commands will controlled so that it displays an intensity equal to the average of the values controlled by each of these pixels.
6) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que dans certaines configurations du système de commande, des inter-pixels cohérents, qui participent à la qualité de la résolution de l'image, sont crées automatiquement.6) Device according to any one of the preceding claims, characterized in that in certain configurations of the control system, coherent inter-pixels, which participate in the quality of the resolution of the image, are created automatically.
7) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que le système permet, selon certaines configuration particulière du système électronique de commande, de n'utiliser qu'une partie des séries de pixels disponibles . 7) Device according to any one of the preceding claims, characterized in that the system makes it possible, according to certain particular configuration of the electronic control system, to use only part of the series of pixels available.
REVENDICATIONS MODIFIEESAMENDED CLAIMS
[reçues par le Bureau international le 28 Juillet 2000 (28.07.00); revendications 1 ,2 et 3 remplacées par nouvelle revendication 1 autresrevendications inchangées (1 page)][received by the International Bureau on July 28, 2000 (07/28.00); claims 1, 2 and 3 replaced by new claim 1 other claims unchanged (1 page)]
REVENDICATIONS :CLAIMS:
1) Dispositif pour réaliser des écrans ou panneaux d'affichage à LED destinés à diffuser des images fixes ou animées, caractérisé en ce qu'il est équipé de LED dont les caractéristiques permettent de constituer un pixel avec seulement trois LED (une rouge + une verte + une bleue), qu'il comporte une disposition particulière des LED permettant à chacune d'elles d'être voisine de six couples de LED de couleurs complémentaires permettant de former autour de chaque LED d'une couleur donnée, six trios tricolores, et que le système électronique de commande est conçu pour commander successivement (selon un ordre pré-établi) ou simultannément certains pixels ou tous les pixels.1) Device for producing LED screens or display panels intended for broadcasting fixed or animated images, characterized in that it is equipped with LEDs whose characteristics make it possible to constitute a pixel with only three LEDs (one red + one green + one blue), that it includes a particular arrangement of LEDs allowing each of them to be close to six pairs of LEDs of complementary colors making it possible to form around each LED of a given color, six tri-color trios, and that the electronic control system is designed to control successively (in a pre-established order) or simultaneously certain pixels or all the pixels.
2) Dispositif selon la revendication 1 caractérisé en ce que différentes configurations du système de commande sont possibles, engendrant chacune des caractéristiques différentes de l'image obtenue (résolution et luminance).2) Device according to claim 1 characterized in that different configurations of the control system are possible, each generating different characteristics of the image obtained (resolution and luminance).
3) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que dans certains configurations du système de commande, une même LED qui peut intevenir dans la constitution de plusieurs pixels commandés contigus, sera commandée de telle sorte qu'elle affiche une intensité égale à la moyenne des valeurs commandées par chacun de ces pixels.3) Device according to any one of the preceding claims, characterized in that in certain configurations of the control system, the same LED which can intervene in the constitution of several contiguous controlled pixels, will be controlled so that it displays an equal intensity the average of the values controlled by each of these pixels.
4) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que dans certaines configurations du système de commande, des inter-pixels cohérents, qui participent à la qualité de la résolution de l'image, sont crées automatiquement.4) Device according to any one of the preceding claims, characterized in that in certain configurations of the control system, coherent inter-pixels, which participate in the quality of the resolution of the image, are created automatically.
5) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que le système permet, selon certaines configuration particulière du système électronique de commande, de n'utiliser qu'une partie des séries de pixels disponibles . 5) Device according to any one of the preceding claims, characterized in that the system makes it possible, according to certain particular configuration of the electronic control system, to use only part of the series of pixels available.
PCT/FR2000/000663 1999-04-06 2000-03-17 High resolution display screen for an led screen WO2000060562A1 (en)

Priority Applications (1)

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AU33000/00A AU3300000A (en) 1999-04-06 2000-03-17 High resolution display screen for an led screen

Applications Claiming Priority (2)

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FR9904260A FR2792096A1 (en) 1999-04-06 1999-04-06 DEVICE ALLOWING, IN A LIGHT-LUMINESCENT DIODES (LED) DISPLAY PANEL (OR SCREEN), TO INCREASE, COMPARED TO A CONVENTIONAL DESIGN, THE NUMBER OF PIXELS / NUMBER OF LED RATIO
FR99/04260 1999-04-06

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CN101893813A (en) * 2005-02-06 2010-11-24 精工爱普生株式会社 Projection display device
US7993021B2 (en) * 2005-11-18 2011-08-09 Cree, Inc. Multiple color lighting element cluster tiles for solid state lighting panels
CN103413500A (en) * 2013-08-07 2013-11-27 深圳市大象视界科技有限公司 LED display screen
US8866410B2 (en) 2007-11-28 2014-10-21 Cree, Inc. Solid state lighting devices and methods of manufacturing the same

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GB2176042A (en) * 1985-05-28 1986-12-10 Integrated Systems Eng Solid state color display system and light emitting diode pixels therefore
US5808592A (en) * 1994-04-28 1998-09-15 Toyoda Gosei Co., Ltd. Integrated light-emitting diode lamp and method of producing the same

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FR2690775B1 (en) * 1992-04-30 1995-06-02 Masson Jacques Luminous matrix display device of reduced dimensions.

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GB2176042A (en) * 1985-05-28 1986-12-10 Integrated Systems Eng Solid state color display system and light emitting diode pixels therefore
US5808592A (en) * 1994-04-28 1998-09-15 Toyoda Gosei Co., Ltd. Integrated light-emitting diode lamp and method of producing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101893813A (en) * 2005-02-06 2010-11-24 精工爱普生株式会社 Projection display device
US7993021B2 (en) * 2005-11-18 2011-08-09 Cree, Inc. Multiple color lighting element cluster tiles for solid state lighting panels
US8866410B2 (en) 2007-11-28 2014-10-21 Cree, Inc. Solid state lighting devices and methods of manufacturing the same
US9491828B2 (en) 2007-11-28 2016-11-08 Cree, Inc. Solid state lighting devices and methods of manufacturing the same
CN103413500A (en) * 2013-08-07 2013-11-27 深圳市大象视界科技有限公司 LED display screen

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FR2792096A1 (en) 2000-10-13

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