EP1554646A2 - Display screen addressing system - Google Patents

Display screen addressing system

Info

Publication number
EP1554646A2
EP1554646A2 EP03775477A EP03775477A EP1554646A2 EP 1554646 A2 EP1554646 A2 EP 1554646A2 EP 03775477 A EP03775477 A EP 03775477A EP 03775477 A EP03775477 A EP 03775477A EP 1554646 A2 EP1554646 A2 EP 1554646A2
Authority
EP
European Patent Office
Prior art keywords
microcircuit
address
addresses
addressing
display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP03775477A
Other languages
German (de)
French (fr)
Inventor
Jean-François Peyre
Jean-Chrétien Favreau
Matthieu Mauger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEWSTEP
Original Assignee
INANOV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by INANOV filed Critical INANOV
Publication of EP1554646A2 publication Critical patent/EP1554646A2/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2085—Special arrangements for addressing the individual elements of the matrix, other than by driving respective rows and columns in combination
    • G09G3/2088—Special arrangements for addressing the individual elements of the matrix, other than by driving respective rows and columns in combination with use of a plurality of processors, each processor controlling a number of individual elements of the matrix
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G06F3/1446—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays

Definitions

  • the present invention relates to a display system with individual elements, each image point of which can be addressed individually by means of an integrated microcircuit with a single address disposed on each element.
  • the present invention relates to the field of flat display screens.
  • Such screens comprise a set of image elements or pixels, organized in a matrix and addressed by a network of conductors in lines and a network of conductors in columns.
  • each display element for example each color point of each pixel, is provided with an integrated microcircuit having a unique address.
  • the microcircuits are connected in parallel on common addressing electrodes, which can advantageously take the form of conducting planes and electrically supply the elements.
  • the invention therefore relates to a display device made up of individual elements on which a microcircuit containing each electronic and logic device has been placed on each element enabling it: - to record its address, in a non-volatile, permanent or reprogrammable. For example, an address formed of 32 bits will be chosen.
  • a display element and a microcircuit are arranged by elementary color point of the image.
  • each microcircuit manages several color points or elementary points adjacent to the image, on one or more addresses.
  • the individual addresses are engraved on the microcircuit during its manufacture and remain visible for an optical reading of this said address during the assembly of the display screen.
  • the individual addresses are electrically written in a non-volatile memory area of the microcircuit during the assembly of the display screen.
  • the display screen is partitioned into several addressing zones controlled independently and simultaneously so as to reduce the frequency of the addressing signals.
  • the detection of the contact can be done in various ways, for example by mechanical contact of a stud mounted on the microcircuit with an electrode or by capacitive detection of the mechanical approach of the microcircuit to an electrode, approximation induced by the pressure of the user. on the screen. to correct the modulation of its display element as a function of a local measurement, for example of the current passing through the element, or of a coefficient transmitted by the addressing system.
  • Figures 1 to 6 are schematic representations of a display element according to the present invention.
  • FIG. 1 represents an embodiment of the present invention in which the display element 11, with two electrodes 13 is connected to the microcircuit 12, this microcircuit itself being connected to two common addressing electrodes 14.
  • FIG. 2 represents an embodiment in which the display element 21, for example a cathode ray tube with field emission, comprises three electrodes, for example the emitter 23, the anode with phosphors 25 and the control grid 24.
  • the anodes 25 of the multiple elements 21 are connected together to a common electrode 27, the emitters are connected to a common ground 28, also connected to the microcircuits, while the brightness modulation is carried out by the control of the electrode 24 by the microcircuit.
  • the display element 21 for example a cathode ray tube with field emission
  • the anodes 25 of the multiple elements 21 are connected together to a common electrode 27, the emitters are connected to a common ground 28, also connected to the microcircuits, while the brightness modulation is carried out by the control of the electrode 24 by the microcircuit.
  • the display element 21 for example a cathode ray tube with field emission
  • FIG. 3 shows another embodiment in which the display element 31 with two electrodes is mounted in series with the microcircuit 32 between the two common electrodes 33 and 34.
  • FIG. 4 represents another embodiment in which the display element 41 is provided with a transformer, composed of a primary circuit 44 and a secondary circuit 43, possibly connected together by a connection 45.
  • the microcircuit 42 is mounted in series with the primary circuit which it controls.
  • FIG. 5 represents another embodiment with a transformer similar to FIG. 4, the display element 51 here being a discharge tube or a cathode ray tube with field emission, the primary circuit 53 is connected to the microcircuit 52 and to a common electrode 56 dedicated to power distribution, the addressing being effected on another electrode 57 and a common ground 55.
  • FIG. 6 represents another possible embodiment in which each microcircuit 64 controls several display elements, for example three elementary color points 61, 62, 63 of the same pixel.
  • the microcircuit can then contain several addresses or receive after its address, a group of information corresponding to the different elements that it controls.
  • Serial circuits as shown in Figure 1, 3, 4 or 6 assume devices in the addressing system and the microcircuits making it possible to separate, for example temporally, the functions of transmission of address data and of brightness, at high frequency and low power level and brightness modulation functions, low frequency and higher power level. It is also possible to add a direct voltage on the addressing electrodes supplying the power for modulating the addressing signals, the microcircuit carrying out the separation of the signals.
  • microcircuits are connected in parallel on common electrodes. These common electrodes can be used for addressing and powering.
  • each microcircuit can correct differences in brightness from one light element to another, either by focal measurement for example of the emission current and correction by comparison with an integrated voltage reference, or by external measurement, during a calibration phase, characteristics of each element, calculation of the correction coefficients necessary to improve uniformity and sending to each microcircuit of these correction coefficients.
  • Each microcircuit can register in addition to its individual address and in a predefined order, the addresses of one or more display elements, adjacent or not, and be capable, when it detects the transmission of one of said registered addresses, to count the number of brightness information transmitted in series and without a new address, and to load after this countdown the information intended for it.
  • microcircuit when the microcircuit is provided with means enabling it to detect that the user has touched or pressed the screen near the corresponding display element, i! will be provided with means of returning this information, with its individual address, to the common addressing and supply electrodes.

Abstract

The invention relates to a display device comprising individual elements (11). The inventive device is characterised in that an electronic microcircuit (12) is positioned on each of the aforementioned elements. Moreover, the electronic microcircuit (12) is capable of: recognising the address thereof among those of other microcircuits which are connected in parallel to the shared addressing electrodes, recording brightness data which are transmitted to said address and modulating the brightness of the display element of same using the data received.

Description

SYSTÈME D'ADRESSAGE D'ÉCRAN DE VISUALISATION VISUALIZATION SCREEN ADDRESSING SYSTEM
La présente invention a pour objet un système d'affichage à éléments individuels dont chaque point d'image est adressable individuellement grâce à un microcircuit intégré à adresse unique disposé sur chaque élément.The present invention relates to a display system with individual elements, each image point of which can be addressed individually by means of an integrated microcircuit with a single address disposed on each element.
La présente invention se rapporte au domaine des écrans plats de visualisation. Classiquement, de tels écrans comportent un ensemble d'éléments d'image ou pixels, organisés en matrice et adressés par un réseau de conducteurs en lignes et un réseau de conducteurs en colonnes.The present invention relates to the field of flat display screens. Conventionally, such screens comprise a set of image elements or pixels, organized in a matrix and addressed by a network of conductors in lines and a network of conductors in columns.
Suivant l'objet de la présente invention, ces deux réseaux de conducteurs, lignes et colonnes, sont supprimés et chaque élément d'affichage, par exemple chaque point couleur de chaque pixel, est doté d'un microcircuit intégré possédant une adresse unique. Les microcircuits sont reliés en parallèle sur des électrodes communes d'adressage, qui peuvent avantageusement prendre la forme de plans conducteurs et alimenter électriquement les éléments.According to the object of the present invention, these two networks of conductors, rows and columns, are eliminated and each display element, for example each color point of each pixel, is provided with an integrated microcircuit having a unique address. The microcircuits are connected in parallel on common addressing electrodes, which can advantageously take the form of conducting planes and electrically supply the elements.
L'invention concerne donc un dispositif d'affichage constitué d'éléments individuels sur lesquels on a mis en place sur chaque élément un microcircuit contenant les dispositifs électroniques et logiques lui permettant : - d'enregistrer son adresse, de façon non volatile, permanente ou reprogrammable. On choisira par exemple une adresse formée de 32 bits.The invention therefore relates to a display device made up of individual elements on which a microcircuit containing each electronic and logic device has been placed on each element enabling it: - to record its address, in a non-volatile, permanent or reprogrammable. For example, an address formed of 32 bits will be chosen.
- de reconnaître son adresse sur les signaux transmis sur les électrodes parmi celles des autres microcircuits des autres éléments d'affichage reliés en parallèle sur les électrodes communes d'adressage et d'alimentation. - d'enregistrer temporairement les données de luminosité transmises à son adresse, par exemple sous la forme d'un mot binaire de 8 bits.- to recognize its address on the signals transmitted on the electrodes among those of the other microcircuits of the other display elements connected in parallel on the common addressing and supply electrodes. - temporarily save the brightness data transmitted to its address, for example in the form of an 8-bit binary word.
- de moduler la luminosité de son élément d'affichage suivant les données reçues, par exemple en modulant la tension aux bornes de l'élément ou en sélectionnant parmi les impulsions de puissance reçues du système d'adressage, celles qui seront transmises à l'élément.- to modulate the brightness of its display element according to the data received, for example by modulating the voltage across the element or by selecting from the power pulses received from the addressing system, those which will be transmitted to the element.
- de créer l'alimentation continue nécessaire à ses circuits logiques, par exemple par un dispositif de diode et condensateur. Dans un des modes de réalisation de l'invention, un élément d'affichage et un microcircuit sont disposés par point couleur élémentaire de l'image.- to create the continuous supply necessary for its logic circuits, for example by a diode and capacitor device. In one of the embodiments of the invention, a display element and a microcircuit are arranged by elementary color point of the image.
Selon un autre mode, chaque microcircuit gère plusieurs points couleur ou points élémentaires adjacents de l'image, sur une ou plusieurs adresses. De façon avantageuse, les adresses individuelles sont gravées sur le microcircuit au cours de sa fabrication et restent visibles pour une lecture optique de cette dite adresse pendant l'assemblage de l'écran de visualisation.According to another mode, each microcircuit manages several color points or elementary points adjacent to the image, on one or more addresses. Advantageously, the individual addresses are engraved on the microcircuit during its manufacture and remain visible for an optical reading of this said address during the assembly of the display screen.
De préférence, les adresses individuelles sont inscrites électriquement dans une zone de mémoire non volatile du microcircuit pendant l'assemblage de l'écran de visualisation.Preferably, the individual addresses are electrically written in a non-volatile memory area of the microcircuit during the assembly of the display screen.
Suivant un des modes de réalisation, l'écran de visualisation est partitionné en plusieurs zones d'adressage pilotées indépendamment et simultanément de façon à diminuer la fréquence des signaux d'adressage.According to one of the embodiments, the display screen is partitioned into several addressing zones controlled independently and simultaneously so as to reduce the frequency of the addressing signals.
On peut aussi avantageusement doter le microcircuit de dispositifs lui permettant :One can also advantageously provide the microcircuit with devices allowing it:
- d'enregistrer, en plus de son adresse individuelle et dans un ordre prédéfini, les adresses d'un certain nombre d'autres éléments, et ainsi de charger les données de luminosité transmises à un intervalle donné de la transmission d'une de ces autres adresses, sans transmission de sa propre adresse. Il devra être capable, lorsqu'il détecte la transmission d'une des dites adresses enregistrées, de décompter le nombre d'informations de luminosité transmises en série et sans nouvelle adresse, et de charger après ce décomptage les informations qui lui sont destinées. On peut ainsi transmettre une adresse suivie de plusieurs informations de luminosité, et donc diminuer significativement le flot de données sur les électrodes d'adressage. Le regroupement des éléments d'affichage peut être arbitraire mais sera choisi de façon à simplifier le traitement des données.- to register, in addition to its individual address and in a predefined order, the addresses of a certain number of other elements, and thus to load the luminosity data transmitted at a given interval of the transmission of one of these other addresses, without forwarding your own address. When it detects the transmission of one of said registered addresses, it must be able to count down the number of brightness information transmitted in series and without a new address, and to load after this countdown the information intended for it. It is thus possible to transmit an address followed by several brightness information, and therefore significantly reduce the data flow on the addressing electrodes. The grouping of display elements can be arbitrary but will be chosen so as to simplify data processing.
- de reconnaître le contact tactile sur l'écran et de renvoyer alors cette information avec son adresse au système d'adressage. La détection du contact peut se faire de diverses façons, par exemple par contact mécanique d'un plot monté sur le microcircuit avec une électrode ou par détection capacitive du rapprochement mécanique du microcircuit d'une électrode, rapprochement induit par la pression de l'utilisateur sur l'écran. - de corriger la modulation de son élément d'affichage en fonction d'une mesure locale, par exemple du courant traversant l'élément, ou d'un coefficient transmis par le système d'adressage.- recognize the touch contact on the screen and then send this information with its address to the addressing system. The detection of the contact can be done in various ways, for example by mechanical contact of a stud mounted on the microcircuit with an electrode or by capacitive detection of the mechanical approach of the microcircuit to an electrode, approximation induced by the pressure of the user. on the screen. to correct the modulation of its display element as a function of a local measurement, for example of the current passing through the element, or of a coefficient transmitted by the addressing system.
- de reconnaître certaines adresses globales prédéfinies et se mettre alors dans un mode de test prédéfini, par exemple de déclencher l'allumage à pleine luminosité de l'élément.- recognize certain predefined global addresses and then enter a predefined test mode, for example to trigger the element to switch on at full brightness.
L'invention sera mieux comprise, et d'autres buts, avantages et caractéristiques de celle-ci apparaîtront plus clairement à la lecture de la description qui suit de modes préférés de réalisation donnés à titre non limitatif et à laquelle une planche de dessins est annexée sur laquelle :The invention will be better understood, and other objects, advantages and characteristics thereof will appear more clearly on reading the following description of preferred embodiments given without limitation and to which a sheet of drawings is attached. on which :
Les figures 1 à 6 sont des représentations schématiques d'un élément d'affichage suivant la présente invention.Figures 1 to 6 are schematic representations of a display element according to the present invention.
La figure 1 représente un mode de réalisation de la présente invention dans lequel l'élément d'affichage 11 , à deux électrodes 13 est relié au microcircuit 12, ce microcircuit étant lui-même relié à deux électrodes communes d'adressage 14.FIG. 1 represents an embodiment of the present invention in which the display element 11, with two electrodes 13 is connected to the microcircuit 12, this microcircuit itself being connected to two common addressing electrodes 14.
La figure 2 représente un mode de réalisation dans lequel l'élément d'affichage 21 , par exemple un tube cathodique à émission de champ, comporte trois électrodes, par exemple l'émetteur 23, l'anode avec luminophores 25 et la grille de contrôle 24. Dans ce mode particulier, les anodes 25 des multiples éléments 21 sont reliées ensemble à une électrode commune 27, les émetteurs sont reliés à une masse commune 28, également reliée aux microcircuits, tandis que la modulation de luminosité s'effectue par le pilotage de l'électrode 24 par le microcircuit. On trouve ici donc trois électrodes communes.FIG. 2 represents an embodiment in which the display element 21, for example a cathode ray tube with field emission, comprises three electrodes, for example the emitter 23, the anode with phosphors 25 and the control grid 24. In this particular mode, the anodes 25 of the multiple elements 21 are connected together to a common electrode 27, the emitters are connected to a common ground 28, also connected to the microcircuits, while the brightness modulation is carried out by the control of the electrode 24 by the microcircuit. There are therefore three common electrodes here.
La figure 3 représente un autre mode de réalisation dans lequel l'élément d'affichage 31 à deux électrodes est monté en série avec le microcircuit 32 entre les deux électrodes communes 33 et 34.FIG. 3 shows another embodiment in which the display element 31 with two electrodes is mounted in series with the microcircuit 32 between the two common electrodes 33 and 34.
La figure 4 représente un autre mode de réalisation dans lequel l'élément d'affichage 41 est doté d'un transformateur, composé d'un circuit primaire 44 et d'un circuit secondaire 43, éventuellement reliés ensemble par une connexion 45. Le microcircuit 42 est monté en série avec le circuit primaire qu'il pilote. La figure 5 représente un autre mode de réalisation avec un transformateur similaire à la figure 4, l'élément d'affichage 51 étant ici un tube à décharge ou un tube cathodique à émission de champ, le circuit primaire 53 est relié au microcircuit 52 et à une électrode commune 56 dédiée à la distribution de puissance, l'adressage s'effectuant sur une autre électrode 57 et une masse commune 55.FIG. 4 represents another embodiment in which the display element 41 is provided with a transformer, composed of a primary circuit 44 and a secondary circuit 43, possibly connected together by a connection 45. The microcircuit 42 is mounted in series with the primary circuit which it controls. FIG. 5 represents another embodiment with a transformer similar to FIG. 4, the display element 51 here being a discharge tube or a cathode ray tube with field emission, the primary circuit 53 is connected to the microcircuit 52 and to a common electrode 56 dedicated to power distribution, the addressing being effected on another electrode 57 and a common ground 55.
La figure 6 représente un autre mode possible de réalisation dans lequel chaque microcircuit 64 contrôle plusieurs éléments d'affichage, par exemple trois points couleur élémentaires 61 ,62,63 d'un même pixel. Le microcircuit peut alors contenir plusieurs adresses ou recevoir après son adresse, un groupe d'information correspondant aux différents éléments qu'il contrôle.FIG. 6 represents another possible embodiment in which each microcircuit 64 controls several display elements, for example three elementary color points 61, 62, 63 of the same pixel. The microcircuit can then contain several addresses or receive after its address, a group of information corresponding to the different elements that it controls.
Des montages en série tels que présentés Figure 1 , 3, 4 ou 6 supposent des dispositifs dans le système d'adressage et les microcircuits permettant de séparer, par exemple temporellement, les fonctions de transmission de données d'adresse et de luminosité, à haute fréquence et bas niveau de puissance et les fonctions de modulation de la luminosité, à basse fréquence et plus haut niveau de puissance. On peut également additionner sur les électrodes d'adressage une tension continue fournissant la puissance à la modulation des signaux d'adressage, le microcircuit effectuant la séparation des signaux.Serial circuits as shown in Figure 1, 3, 4 or 6 assume devices in the addressing system and the microcircuits making it possible to separate, for example temporally, the functions of transmission of address data and of brightness, at high frequency and low power level and brightness modulation functions, low frequency and higher power level. It is also possible to add a direct voltage on the addressing electrodes supplying the power for modulating the addressing signals, the microcircuit carrying out the separation of the signals.
Des montages tels que présentés Figure 2 ou 5 possèdent des électrodes séparées pour distribuer la puissance et pour l'adressage, ils simplifient donc le microcircuit mais nécessitent au moins trois électrodes communes.Arrangements as shown in Figure 2 or 5 have separate electrodes for distributing power and for addressing, they therefore simplify the microcircuit but require at least three common electrodes.
La mise en place, selon l'invention, d'un microcircuit intégré par élément d'affichage apporte un grand nombre d'avantages dont une partie est décrite ci-après : - L'adressage individuel supprime le besoin de réaliser des réseaux de lignes et de colonnes comme dans les réalisations traditionnelles des écrans matriciels. Selon l'invention, les microcircuits sont reliés en parallèle sur des électrodes communes. Ces électrodes communes pourront servir à i'adressage et à l'aiimentation.The implementation, according to the invention, of an integrated microcircuit by display element brings a large number of advantages, part of which is described below: - Individual addressing eliminates the need to create line networks and columns as in the traditional realizations of the matrix screens. According to the invention, the microcircuits are connected in parallel on common electrodes. These common electrodes can be used for addressing and powering.
- L'adressage individuel permet de donner toute forme souhaitée à l'écran de visualisation, sans être contraint à ia structure rectangulaire classique imposée par l'adressage traditionnel par lignes et colonnes. - Il devient possible de découper un écran en modules plus petits, de forme quelconque. On peut ainsi envisager de fabriquer une taille standard d'écran que i'on découpera ensuite en écrans plus petits à la demande.- Individual addressing makes it possible to give any desired shape to the display screen, without being constrained by the conventional rectangular structure imposed by traditional addressing by rows and columns. - It becomes possible to cut a screen into smaller modules, of any shape. We can thus consider manufacturing a standard screen size which we will then cut into smaller screens on demand.
- Il devient également possible de réparer une zone d'écran qui se trouverait défectueuse. - chaque microcircuit peut corriger des différences de luminosité d'un élément lumineux à l'autre, soit par mesure focale par exemple du courant d'émission et correction par comparaison avec une référence de tension intégrée, soit par mesure externe, lors d'une phase de calibration, des caractéristiques de chaque élément, calcul des coefficients de correction nécessaires pour améliorer l'uniformité et envoi à chaque microcircuit de ces coefficients de corrections.- It also becomes possible to repair a screen area that is found to be defective. each microcircuit can correct differences in brightness from one light element to another, either by focal measurement for example of the emission current and correction by comparison with an integrated voltage reference, or by external measurement, during a calibration phase, characteristics of each element, calculation of the correction coefficients necessary to improve uniformity and sending to each microcircuit of these correction coefficients.
- la modulation de l'allumage de l'élément d'affichage étant gérée localement par le microcircuit, on peut alors faire fonctionner cet élément avec un rapport cyclique beaucoup plus grand que ne le permet un système d'adressage lignes - colonnes. Le fort rapport cyclique permet d'éviter les papiilotements et surtout de travailler avec une luminosité instantanée plus faible et donc, particulièrement pour un écran à émission de champ et luminophores, avec un rendement lumineux plus élevé. Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n'avaient pas été, à ce jour, obtenus par des dispositifs similaires. Chaque microcircuit pourra enregistrer en plus de son adresse individuelle et dans un ordre prédéfini, les adresses d'un ou plusieurs éléments d'affichage, adjacents ou non, et être capable, lorsqu'il détecte la transmission d'une des dites adresses enregistrées, de décompter le nombre d'informations de luminosité transmises en série et sans nouvelle adresse, et de charger après ce décomptage les informations qui lui sont destinées.- the modulation of the ignition of the display element being managed locally by the microcircuit, we can then operate this element with a much larger duty cycle than a row - column addressing system allows. The high duty cycle makes it possible to avoid flickering and especially to work with a lower instantaneous brightness and therefore, particularly for a screen with field emission and phosphors, with a higher light output. The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices. Each microcircuit can register in addition to its individual address and in a predefined order, the addresses of one or more display elements, adjacent or not, and be capable, when it detects the transmission of one of said registered addresses, to count the number of brightness information transmitted in series and without a new address, and to load after this countdown the information intended for it.
De plus, lorsque le microcircuit est doté de moyens lui permettant de détecter que l'utilisateur a touché ou appuyé sur l'écran à proximité de l'élément d'affichage correspondant, i! sera doté de moyens de renvoyer cette information, avec son adresse individuelle, sur les électrodes communes d'adressage et d'aiimentation. In addition, when the microcircuit is provided with means enabling it to detect that the user has touched or pressed the screen near the corresponding display element, i! will be provided with means of returning this information, with its individual address, to the common addressing and supply electrodes.

Claims

REVENDICATIONS
1 . Dispositif d'affichage constitué d'éléments individuels (11) caractérisé par la mise en place, sur chaque élément, d'un microcircuit électronique (12) capable de reconnaître son adresse parmi celle des autres microcircuits reliés en parallèle sur les électrodes communes d'adressage, d'enregistrer les données de luminosité transmises à son adresse et de moduler la luminosité de son élément d'affichage suivant les données reçues.1. Display device made up of individual elements (11) characterized by the installation, on each element, of an electronic microcircuit (12) capable of recognizing its address among that of the other microcircuits connected in parallel on the common electrodes of addressing, recording the brightness data transmitted to its address and modulating the brightness of its display element according to the data received.
2 . Dispositif selon la revendication 1 , se caractérisant par le fait qu'il comporte un élément d'affichage et un microcircuit par point couleur élémentaire de l'image.2. Device according to claim 1, characterized in that it comprises a display element and a microcircuit per elementary color point of the image.
3 . Dispositif selon la revendication 1 , se caractérisant par le fait que chaque microcircuit gère plusieurs points couleur ou points élémentaires adjacents de l'image, sur une ou plusieurs adresses.3. Device according to claim 1, characterized in that each microcircuit manages several color points or elementary points adjacent to the image, on one or more addresses.
4. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les adresses individuelles sont gravées sur le microcircuit au cours de sa fabrication et restent visibles pour une lecture optique de cette dite adresse pendant l'assemblage de l'écran de visualisation.4. Device according to any one of the preceding claims, characterized in that the individual addresses are engraved on the microcircuit during its manufacture and remain visible for an optical reading of this said address during the assembly of the screen. of visualization.
5. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les adresses individuelles sont inscrites électriquement dans une zone de mémoire non volatile du microcircuit pendant l'assemblage de l'écran de visualisation.5. Device according to any one of the preceding claims, characterized in that the individual addresses are electrically written in a non-volatile memory area of the microcircuit during the assembly of the display screen.
6. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que l'écran de visualisation est partitionné en plusieurs zones d'adressage pilotées indépendamment et simultanément de façon à diminuer la fréquence des signaux d'adressage.6. Device according to any one of the preceding claims, characterized in that the display screen is partitioned into several addressing zones controlled independently and simultaneously so as to reduce the frequency of the addressing signals.
7. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que chaque microcircuit peut enregistrer, en plus de son adresse individuelle et dans un ordre prédéfini, les adresses d'un ou plusieurs éléments d'affichage, adjacents ou non, et est capable, lorsqu'il détecte fa transmission d'une des dites adresses enregistrées, de décompter le nombre d'informations de luminosité transmises en série et sans nouvelle adresse, et de charger après ce décomptage les informations qui lui sont destinées.7. Device according to any one of the preceding claims, characterized in that each microcircuit can record, in addition to its individual address and in a predefined order, the addresses of one or more display elements, adjacent or not , and is capable, when detects the transmission of one of said registered addresses, deducts the number of brightness information transmitted in series and without a new address, and loads after this countdown the information intended for it.
8. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le microcircuit est doté de moyens lui permettant de détecter que l'utilisateur a touché ou appuyé sur l'écran à proximité de l'élément d'affichage correspondant et de moyens de renvoyer cette information, avec son adresse individuelle, sur les électrodes communes d'adressage et d'alimentation.8. Device according to any one of the preceding claims, characterized in that the microcircuit is provided with means enabling it to detect that the user has touched or pressed on the screen near the corresponding display element and means of returning this information, with its individual address, to the common address and supply electrodes.
9. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le microcircuit est doté de moyens lui permettant de corriger la modulation de son élément d'affichage en fonction d'une mesure locale, par exemple de courant, ou d'un coefficient de correction transmis par le système d'adressage.9. Device according to any one of the preceding claims, characterized in that the microcircuit is provided with means enabling it to correct the modulation of its display element as a function of a local measurement, for example of current, or a correction coefficient transmitted by the addressing system.
10. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le microcircuit est doté de moyens lui permettant de reconnaître certaines adresses globales prédéfinies et se mettre alors dans un mode de test prédéfini. 10. Device according to any one of the preceding claims, characterized in that the microcircuit is provided with means enabling it to recognize certain predefined global addresses and then to put itself in a predefined test mode.
EP03775477A 2002-10-10 2003-10-08 Display screen addressing system Ceased EP1554646A2 (en)

Applications Claiming Priority (3)

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FR0213287 2002-10-10
FR0213287A FR2845812B1 (en) 2002-10-10 2002-10-10 VISUALIZING SCREEN ADDRESSING SYSTEM
PCT/FR2003/002963 WO2004034362A2 (en) 2002-10-10 2003-10-08 Display screen addressing system

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FR2845812B1 (en) 2005-09-23
US20080211748A1 (en) 2008-09-04
CA2501884A1 (en) 2004-04-22
JP2006502430A (en) 2006-01-19
WO2004034362A2 (en) 2004-04-22
FR2845812A1 (en) 2004-04-16
WO2004034362A3 (en) 2004-05-13
AU2003283503A1 (en) 2004-05-04

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