EP3365940B1 - Touch-screen display device with reduced interfering electromagnetic radiation emission - Google Patents

Touch-screen display device with reduced interfering electromagnetic radiation emission Download PDF

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Publication number
EP3365940B1
EP3365940B1 EP16809911.7A EP16809911A EP3365940B1 EP 3365940 B1 EP3365940 B1 EP 3365940B1 EP 16809911 A EP16809911 A EP 16809911A EP 3365940 B1 EP3365940 B1 EP 3365940B1
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EP
European Patent Office
Prior art keywords
electronic equipment
conductive wire
circuit board
display device
radio
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EP16809911.7A
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German (de)
French (fr)
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EP3365940A1 (en
Inventor
Salah BENHASSINE
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PSA Automobiles SA
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PSA Automobiles SA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure

Definitions

  • the invention relates to touch screen display devices which are intended to form part of electronic equipment.
  • Certain electronic equipment such as, for example and without limitation, certain car radios fitted to certain vehicles, comprise an antenna suitable for receiving radioelectric waves, and a display device comprising a touch screen.
  • this type of display device has at least two functions. Indeed, it allows a user to select by means of his touch screen at least one audio source and/or a frequency of a radio station or a recording or even a range of a recording. Moreover, it also makes it possible to display on its touch screen information which is representative in particular of the source or radio station selected and/or possibly of the program or of the track selected and in the process of audio reproduction.
  • PCB printed Circuit Board
  • the latter are periodic and contain harmonics, generally every 33 MHz, which can interfere with the radioelectric waves, for example around 99 MHz, which can significantly degrade the quality of audio reproduction of a selected radio program.
  • the object of the invention is therefore in particular to improve the situation.
  • a media terminal bezel made of aluminum alloys is arranged on the outside and serves as the front case; a liquid crystal display is fixed in the front casing of the multimedia terminal; a control unit is located at the rear of the media terminal's liquid crystal display and includes a machine core board as well a power panel, a receiving plate, a loudspeaker, a 3G antenna (the 3rd generation telecommunication) and a WIFI antenna which are connected to the board.
  • the antenna unit adapted to be connected to an electronic device to transmit a received radio signal to the electronic device.
  • the antenna unit includes a noise suppressor to cancel noise generated in the electronic device and transmitted to the antenna unit via a ground line.
  • the noise eliminator is a conductive section, one end of which is electrically connected to an electromagnetic shield of the antenna unit and the other end of which is a free end.
  • the tip is approximately 1/4 wavelength of the radio signal.
  • a display device intended to form part of electronic equipment comprising an antenna capable of receiving radioelectric waves, and comprising a touch screen provided with a printed circuit board controlling display means and emitting electromagnetic waves in operation.
  • This display device is characterized in that it also comprises a conductive wire, on the one hand, comprising a first end coupled (for example connected) to a mass of the printed circuit board and a second free end, and , on the other hand, defining an auxiliary antenna capable of capturing at least part of the energy of the electromagnetic waves so as to reduce electromagnetic disturbances of the radio waves caused by the electromagnetic waves.
  • This conductive wire constituting a suitable antenna located in the immediate vicinity of the source of the electromagnetic waves, it is therefore able to capture at least part of the energy of the latter, thus allowing a significant reduction in interference at the level of the antenna. receipt of electronic equipment. This makes it possible, in particular, to avoid degrading the quality of audio reproduction of a selected radio program.
  • the invention also proposes electronic equipment comprising, on the one hand, radio reception means comprising an antenna adapted to receive radioelectric waves, and, on the other hand, a display device of the type of that presented above. .
  • Such electronic equipment can, for example, be a car radio with a touch screen.
  • the radio waves can define at least radio programs, for example.
  • the invention also proposes a vehicle, optionally of the automobile type, and comprising at least one piece of electronic equipment of the type presented above.
  • the object of the invention is in particular to propose a display device DA intended to form part of an electronic equipment EE comprising an antenna AR capable of receiving radioelectric waves.
  • the electronic equipment EE is a vehicle car radio V.
  • the invention is not limited to this type of electronic equipment. It relates in fact to any type of electronic equipment comprising an antenna capable of receiving radioelectric waves. Thus, it also relates, for example, to radio sets, radio receivers (or “tuners”) for high-fidelity systems, and amplifier-tuners for high-fidelity systems.
  • the vehicle V is of the automobile type. This is for example a car.
  • the EE electronic equipment can be part of any type of vehicle, land, sea (or river), or air.
  • the electronic equipment EE can also be installed, temporarily or permanently, in a building, possibly of the industrial type.
  • FIG. 1 We have schematically and functionally represented on the figure 1 , part of an example of a motor vehicle V comprising electronic equipment EE comprising a display device DA according to the invention.
  • the electronic equipment EE (here a car radio) is more precisely installed in the dashboard PB of the vehicle V, which is itself installed in the passenger compartment H of the latter (V).
  • the electronic equipment EE comprises reception means comprising in particular an antenna AR capable of receiving radioelectric waves and electronic type signal processing means, and electronic type control means.
  • a display device DA comprises a touch screen ET provided with a printed circuit board CC and a conductive wire FC.
  • the printed circuit board (or PCB (“Printed Circuit Board”)) CC controls the display means (for example a touch screen) and emits electromagnetic waves in operation.
  • the electromagnetic waves are periodic and contain harmonics, for example every 33 MHz.
  • the FC lead wire has a first end which is coupled (e.g. connected) to a ground of the DC circuit board, and a second free end.
  • this common thread FC behind the touch screen ET (see figure 2 ) makes it possible to capture at least part of the energy of the electromagnetic waves generated by this touch screen ET.
  • the conductive wire FC acts as a suitable antenna which makes it possible to reduce the electromagnetic disturbances caused by the electromagnetic waves.
  • this conductive wire FC constitutes a kind of “stub” capable of capturing at least part of the energy of the electromagnetic waves which are generated next to it. This captured part of the energy therefore no longer reaches the level of the AR reception antenna of the electronic equipment EE, which allows a significant reduction in interference at the level of this AR reception antenna, and therefore avoids degrade the audio quality of the programs broadcast by the selected radio stations.
  • FC conductive wire resembles the behavior of a receiving antenna but also the behavior of the stub (known in the field of electronic circuits), due to the fact that the FC conductive wire is connected on only one of its two ends, its second end being in the air.
  • the FC conductor wire can be made of copper or aluminum or any other known conductive material.
  • the conductive wire FC has a diameter between 1 mm and 4 mm. This choice of values results from the fact that the resistance of a conductive wire is inversely proportional to the diameter of this conductive wire. More preferably, this diameter may be between 1.5 mm and 3 mm.
  • the conductive wire FC has a length of between 30 cm and 70 cm. This choice of values results from the fact that the resistance of a conductive wire is directly proportional to its resistivity and to its length. The length of the conductive wire is also of major importance directly linked to the wavelength of the electromagnetic waves which propagate. More preferably, this length can be between 40 cm and 50 cm.
  • the conductive wire FC is connected to a ground pin of a connector CN which is secured to the printed circuit board CC.
  • a connector CN which is secured to the printed circuit board CC.
  • the printed circuit board CC has what those skilled in the art call a J6 connector (dedicated to coupling with a multiplexed communication network of the LIN type ("Local Interconnect Network") embedded in the vehicle V)
  • the first end of the conductor wire FC can be connected to the third pin of this connector J6 which is dedicated to ground.
  • the conductive thread FC can, as illustrated without limitation in the picture 2 , be at least partially part of the electrical harness FE which provides the connection between the connector CN of the touch screen ET and another vehicle equipment V, such as for example a bus of a communication network (possibly multiplexed).
  • the printed circuit board CC has a connector J6 as well as a connector J5 (dedicated to coupling with a multiplexed communication network of the CAN ("Controller Area Network") type on board the vehicle V), the disconnection of the existing ground splice between the ground of the LIN network and of the CAN network can make it possible to expose the conductive wire FC and thus achieve the expected effect of reducing electromagnetic interference.

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Description

L'invention concerne les dispositifs d'affichage à écran tactile qui sont destinés à faire partie d'un équipement électronique.The invention relates to touch screen display devices which are intended to form part of electronic equipment.

Certains équipements électroniques, comme par exemple et non limitativement certains autoradios équipant certains véhicules, comprennent une antenne propre à recevoir des ondes radioélectriques, et un dispositif d'affichage comprenant un écran tactile. Dans le cas d'un autoradio, ce type de dispositif d'affichage a au moins deux fonctions. En effet, il permet à un usager de sélectionner au moyen de son écran tactile au moins une source audio et/ou une fréquence d'une station de radio ou un enregistrement ou encore une plage d'un enregistrement. Par ailleurs, il permet également d'afficher sur son écran tactile des informations qui sont représentatives notamment de la source ou station de radio sélectionnée et/ou éventuellement du programme ou de la plage sélectionné(e) et en cours de restitution audio.Certain electronic equipment, such as, for example and without limitation, certain car radios fitted to certain vehicles, comprise an antenna suitable for receiving radioelectric waves, and a display device comprising a touch screen. In the case of a car radio, this type of display device has at least two functions. Indeed, it allows a user to select by means of his touch screen at least one audio source and/or a frequency of a radio station or a recording or even a range of a recording. Moreover, it also makes it possible to display on its touch screen information which is representative in particular of the source or radio station selected and/or possibly of the program or of the track selected and in the process of audio reproduction.

Certains de ces écrans tactiles sont munis d'une carte à circuits imprimés (ou PCB (« Printed Circuit Board »)) qui contrôle des moyens d'affichage et émet en fonctionnement des ondes électromagnétiques. Ces dernières sont périodiques et contiennent des harmoniques, en général tous les 33 MHz, qui peuvent interférer avec les ondes radioélectriques, par exemple autour de 99 MHz, ce qui peut dégrader notablement la qualité de restitution audio d'un programme radio sélectionné.Some of these touch screens are fitted with a printed circuit board (or PCB (“Printed Circuit Board”)) which controls the display means and emits electromagnetic waves in operation. The latter are periodic and contain harmonics, generally every 33 MHz, which can interfere with the radioelectric waves, for example around 99 MHz, which can significantly degrade the quality of audio reproduction of a selected radio program.

L'invention a donc notamment pour but d'améliorer la situation.The object of the invention is therefore in particular to improve the situation.

On connait par le document CN 104 881 088 A concerne un terminal multimédia de réseau intelligent appliqué à un bus. Une bordure de borne média en alliages d'aluminium est disposée à l'extérieur et sert de boîtier avant ; un afficheur à cristaux liquides est fixé dans le boîtier avant du terminal multimédia ; une unité de contrôle est située à l'arrière de l'affichage à cristaux liquides du terminal média et comprend une carte de cœur de machine ainsi qu'un panneau d'alimentation, une plaque de réception, un haut-parleur, une antenne 3G (la télécommunication de 3e génération) et une antenne WIFI qui sont connectées à la carte.We know from the document CN 104 881 088 A relates to an intelligent network multimedia terminal applied to a bus. A media terminal bezel made of aluminum alloys is arranged on the outside and serves as the front case; a liquid crystal display is fixed in the front casing of the multimedia terminal; a control unit is located at the rear of the media terminal's liquid crystal display and includes a machine core board as well a power panel, a receiving plate, a loudspeaker, a 3G antenna (the 3rd generation telecommunication) and a WIFI antenna which are connected to the board.

On connait aussi par le document EP 1589680 A1 une unité d'antenne adaptée pour être connectée à un dispositif électronique pour transmettre un signal radio reçu au dispositif électronique. L'unité d'antenne comprend un suppresseur de bruit pour annuler le bruit généré dans le dispositif électronique et transmis à l'unité d'antenne via une ligne de masse. L'éliminateur de bruit est un tronçon conducteur dont une extrémité est connectée électriquement à un blindage électromagnétique de l'unité d'antenne et dont l'autre extrémité est une extrémité libre. L'embout a une longueur d'environ 1/4 de longueur d'onde du signal radio.We also know from the document EP 1589680 A1 an antenna unit adapted to be connected to an electronic device to transmit a received radio signal to the electronic device. The antenna unit includes a noise suppressor to cancel noise generated in the electronic device and transmitted to the antenna unit via a ground line. The noise eliminator is a conductive section, one end of which is electrically connected to an electromagnetic shield of the antenna unit and the other end of which is a free end. The tip is approximately 1/4 wavelength of the radio signal.

Elle propose notamment à cet effet un dispositif d'affichage, destiné à faire partie d'un équipement électronique comprenant une antenne propre à recevoir des ondes radioélectriques, et comprenant un écran tactile muni d'une carte à circuits imprimés contrôlant des moyens d'affichage et émettant en fonctionnement des ondes électromagnétiques.It proposes in particular for this purpose a display device, intended to form part of electronic equipment comprising an antenna capable of receiving radioelectric waves, and comprising a touch screen provided with a printed circuit board controlling display means and emitting electromagnetic waves in operation.

Ce dispositif d'affichage se caractérise par le fait qu'il comprend également un fil conducteur, d'une part, comportant une première extrémité couplée (par exemple connectée) à une masse de la carte à circuits imprimés et une seconde extrémité libre, et, d'autre part, définissant une antenne auxiliaire propre à capter une partie au moins de l'énergie des ondes électromagnétiques de manière à réduire des perturbations électromagnétiques des ondes radioélectriques provoquées par les ondes électromagnétiques.This display device is characterized in that it also comprises a conductive wire, on the one hand, comprising a first end coupled (for example connected) to a mass of the printed circuit board and a second free end, and , on the other hand, defining an auxiliary antenna capable of capturing at least part of the energy of the electromagnetic waves so as to reduce electromagnetic disturbances of the radio waves caused by the electromagnetic waves.

Ce fil conducteur constituant une antenne adaptée située à proximité immédiate de la source des ondes électromagnétiques, il est donc en mesure de capter une partie au moins de l'énergie de ces dernières, permettant ainsi une réduction notable des interférences au niveau de l'antenne de réception de l'équipement électronique. Cela permet, notamment, d'éviter de dégrader la qualité de restitution audio d'un programme radio sélectionné.This conductive wire constituting a suitable antenna located in the immediate vicinity of the source of the electromagnetic waves, it is therefore able to capture at least part of the energy of the latter, thus allowing a significant reduction in interference at the level of the antenna. receipt of electronic equipment. This makes it possible, in particular, to avoid degrading the quality of audio reproduction of a selected radio program.

Le dispositif d'affichage selon l'invention comporte d'autres caractéristiques notamment :

  • son fil conducteur peut être en cuivre ;
  • son fil conducteur présente un diamètre compris entre 1 mm et 4 mm ;
  • son fil conducteur présente une longueur comprise entre 30 cm et 70 cm ;
  • son fil conducteur est connecté à une broche de masse d'un connecteur qui est solidarisé à la carte à circuits imprimés.
The display device according to the invention comprises other characteristics notably :
  • its conducting wire may be copper;
  • its conductive wire has a diameter of between 1 mm and 4 mm;
  • its conductive thread has a length of between 30 cm and 70 cm;
  • its conductive wire is connected to a ground pin of a connector which is secured to the printed circuit board.

L'invention propose également un équipement électronique comprenant, d'une part, des moyens de réception radiophoniques comportant une antenne propre à recevoir des ondes radioélectriques, et, d'autre part, un dispositif d'affichage du type de celui présenté ci-avant.The invention also proposes electronic equipment comprising, on the one hand, radio reception means comprising an antenna adapted to receive radioelectric waves, and, on the other hand, a display device of the type of that presented above. .

Un tel équipement électronique peut, par exemple, être un autoradio à écran tactile.Such electronic equipment can, for example, be a car radio with a touch screen.

Par ailleurs, les ondes radioélectriques peuvent définir au moins des programmes radiophoniques, par exemple.Furthermore, the radio waves can define at least radio programs, for example.

L'invention propose également un véhicule, éventuellement de type automobile, et comprenant au moins un équipement électronique du type de celui présenté ci-avant.The invention also proposes a vehicle, optionally of the automobile type, and comprising at least one piece of electronic equipment of the type presented above.

D'autres caractéristiques et avantages de l'invention apparaîtront à l'examen de la description détaillée ci-après, et des dessins annexés, sur lesquels :

  • la figure 1 illustre schématiquement et fonctionnellement une partie d'un exemple de véhicule automobile comprenant un équipement électronique comportant un dispositif d'affichage selon l'invention, et
  • la figure 2 illustre schématiquement et fonctionnellement, du côté de la face arrière, un exemple de réalisation d'un équipement électronique comportant un dispositif d'affichage selon l'invention.
Other characteristics and advantages of the invention will appear on examination of the detailed description below, and of the appended drawings, in which:
  • the figure 1 schematically and functionally illustrates part of an example of a motor vehicle comprising electronic equipment comprising a display device according to the invention, and
  • the picture 2 illustrates schematically and functionally, on the side of the rear face, an embodiment of electronic equipment comprising a display device according to the invention.

L'invention a notamment pour but de proposer un dispositif d'affichage DA destiné à faire partie d'un équipement électronique EE comprenant une antenne AR propre à recevoir les ondes radioélectriques.The object of the invention is in particular to propose a display device DA intended to form part of an electronic equipment EE comprising an antenna AR capable of receiving radioelectric waves.

Dans ce qui suit, on considère, à titre d'exemple non limitatif, que l'équipement électronique EE est un autoradio de véhicule V. Mais l'invention n'est pas limitée à ce type d'équipement électronique. Elle concerne en effet tout type d'équipement électronique comprenant une antenne propre à recevoir des ondes radioélectriques. Ainsi, elle concerne également, par exemple, les postes de radio, les récepteurs radio (ou « tuners ») de chaîne haute-fidélité, et les amplificateurs-tuners de chaîne haute-fidélité.In what follows, we consider, by way of non-limiting example, that the electronic equipment EE is a vehicle car radio V. But the invention is not limited to this type of electronic equipment. It relates in fact to any type of electronic equipment comprising an antenna capable of receiving radioelectric waves. Thus, it also relates, for example, to radio sets, radio receivers (or "tuners") for high-fidelity systems, and amplifier-tuners for high-fidelity systems.

Par ailleurs, on considère dans ce qui suit, à titre d'exemple non limitatif, que le véhicule V est de type automobile. Il s'agit par exemple d'une voiture. Mais l'équipement électronique EE peut faire partie de tout type de véhicule, terrestre, maritime (ou fluvial), ou aérien. Par ailleurs, l'équipement électronique EE peut également être installé, temporairement ou de façon durable, dans un bâtiment, éventuellement de type industriel.Furthermore, it is considered in what follows, by way of non-limiting example, that the vehicle V is of the automobile type. This is for example a car. But the EE electronic equipment can be part of any type of vehicle, land, sea (or river), or air. Furthermore, the electronic equipment EE can also be installed, temporarily or permanently, in a building, possibly of the industrial type.

On a schématiquement et fonctionnellement représenté sur la figure 1, une partie d'un exemple de véhicule automobile V comprenant un équipement électronique EE comportant un dispositif d'affichage DA selon l'invention. L'équipement électronique EE (ici un autoradio) est plus précisément installé dans la planche de bord PB du véhicule V, qui est elle-même installée dans l'habitacle H de ce dernier (V).We have schematically and functionally represented on the figure 1 , part of an example of a motor vehicle V comprising electronic equipment EE comprising a display device DA according to the invention. The electronic equipment EE (here a car radio) is more precisely installed in the dashboard PB of the vehicle V, which is itself installed in the passenger compartment H of the latter (V).

Bien que cela n'apparaisse pas intégralement sur les figures 1 et 2, l'équipement électronique EE comprend des moyens de réception comportant notamment une antenne AR propre à recevoir des ondes radioélectriques et des moyens de traitement de signaux de type électronique, et des moyens de contrôle de type électronique.Although this does not fully appear on the figures 1 and 2 , the electronic equipment EE comprises reception means comprising in particular an antenna AR capable of receiving radioelectric waves and electronic type signal processing means, and electronic type control means.

Comme illustré sur la figure 2, un dispositif d'affichage DA, selon l'invention, comprend un écran tactile ET muni d'une carte à circuits imprimés CC et un fil conducteur FC.As illustrated on the figure 2 , a display device DA, according to the invention, comprises a touch screen ET provided with a printed circuit board CC and a conductive wire FC.

La carte à circuits imprimés (ou PCB (« Printed Circuit Board »)) CC contrôle les moyens d'affichage (par exemple une dalle tactile) et émet en fonctionnement des ondes électromagnétiques. Dans le cas d'un écran tactile ET, les ondes électromagnétiques sont périodiques et contiennent des harmoniques, par exemple tous les 33 MHz.The printed circuit board (or PCB (“Printed Circuit Board”)) CC controls the display means (for example a touch screen) and emits electromagnetic waves in operation. In the case of an ET touch screen, the electromagnetic waves are periodic and contain harmonics, for example every 33 MHz.

Le fil conducteur FC comporte une première extrémité qui est couplée (par exemple connectée) à une masse de la carte à circuits imprimés CC, et une seconde extrémité libre. Par ailleurs, la mise en place de ce fil conducteur FC derrière l'écran tactile ET (voir figure 2) permet de capter une partie au moins de l'énergie des ondes électromagnétiques générées par cet écran tactile ET. Ainsi, le fil conducteur FC joue le rôle d'antenne adaptée qui permet de réduire les perturbations électromagnétiques provoquées par les ondes électromagnétiques.The FC lead wire has a first end which is coupled (e.g. connected) to a ground of the DC circuit board, and a second free end. In addition, the installation of this common thread FC behind the touch screen ET (see figure 2 ) makes it possible to capture at least part of the energy of the electromagnetic waves generated by this touch screen ET. Thus, the conductive wire FC acts as a suitable antenna which makes it possible to reduce the electromagnetic disturbances caused by the electromagnetic waves.

Du fait que l'une de ses extrémités opposées est libre, ce fil conducteur FC constitue une espèce de « stub » propre à capter une partie au moins de l'énergie des ondes électromagnétiques qui sont générées à côté de lui. Cette partie captée de l'énergie ne parvient donc plus au niveau de l'antenne de réception AR de l'équipement électronique EE, ce qui permet une réduction notable des interférences au niveau de cette antenne de réception AR, et donc d'éviter de dégrader la qualité audio des programmes diffusés par les stations radio sélectionnées.Because one of its opposite ends is free, this conductive wire FC constitutes a kind of “stub” capable of capturing at least part of the energy of the electromagnetic waves which are generated next to it. This captured part of the energy therefore no longer reaches the level of the AR reception antenna of the electronic equipment EE, which allows a significant reduction in interference at the level of this AR reception antenna, and therefore avoids degrade the audio quality of the programs broadcast by the selected radio stations.

Le comportement physique du fil conducteur FC ressemble au comportement d'une antenne réceptrice mais aussi au comportement du stub (connu dans le domaine des circuits électroniques), du fait que le fil conducteur FC est raccordé sur une seule de ses deux extrémités, sa seconde extrémité étant en l'air.The physical behavior of the FC conductive wire resembles the behavior of a receiving antenna but also the behavior of the stub (known in the field of electronic circuits), due to the fact that the FC conductive wire is connected on only one of its two ends, its second end being in the air.

Par exemple, le fil conducteur FC peut être en cuivre ou en aluminium ou en toute autre matière conductrice connue.For example, the FC conductor wire can be made of copper or aluminum or any other known conductive material.

Le fil conducteur FC présente un diamètre compris entre 1 mm et 4 mm. Ce choix de valeurs résulte du fait que la résistance d'un fil conducteur est inversement proportionnelle au diamètre de ce fil conducteur. Plus préférentiellement, ce diamètre peut être compris entre 1,5 mm et 3 mm.The conductive wire FC has a diameter between 1 mm and 4 mm. This choice of values results from the fact that the resistance of a conductive wire is inversely proportional to the diameter of this conductive wire. More preferably, this diameter may be between 1.5 mm and 3 mm.

Le fil conducteur FC présente une longueur comprise entre 30 cm et 70 cm. Ce choix de valeurs résulte du fait que la résistance d'un fil conducteur est directement proportionnelle à sa résistivité et à sa longueur. La longueur du fil conducteur a aussi une importance majeure liée directement à la longueur d'onde des ondes électromagnétiques qui se propagent. Plus préférentiellement, cette longueur peut être comprise entre 40 cm et 50 cm.The conductive wire FC has a length of between 30 cm and 70 cm. This choice of values results from the fact that the resistance of a conductive wire is directly proportional to its resistivity and to its length. The length of the conductive wire is also of major importance directly linked to the wavelength of the electromagnetic waves which propagate. More preferably, this length can be between 40 cm and 50 cm.

Comme illustré sur la figure 2, le fil conducteur FC est connecté à une broche de masse d'un connecteur CN qui est solidarisé à la carte à circuits imprimés CC. A titre d'exemple, lorsque la carte à circuits imprimés CC dispose de ce que l'homme de l'art appelle un connecteur J6 (dédié au couplage avec un réseau de communication multiplexé de type LIN (« Local Interconnect Network ») embarqué dans le véhicule V), la première extrémité du fil conducteur FC peut être connectée à la troisième broche de ce connecteur J6 qui est dédiée à la masse.As illustrated on the picture 2 , the conductive wire FC is connected to a ground pin of a connector CN which is secured to the printed circuit board CC. By way of example, when the printed circuit board CC has what those skilled in the art call a J6 connector (dedicated to coupling with a multiplexed communication network of the LIN type ("Local Interconnect Network") embedded in the vehicle V), the first end of the conductor wire FC can be connected to the third pin of this connector J6 which is dedicated to ground.

On notera que le fil conducteur FC peut, comme illustré non limitativement sur la figure 2, faire au moins partiellement partie du faisceau électrique FE qui assure la liaison entre le connecteur CN de l'écran tactile ET et un autre équipement du véhicule V, comme par exemple un bus d'un réseau de communication (éventuellement multiplexé).It will be noted that the conductive thread FC can, as illustrated without limitation in the picture 2 , be at least partially part of the electrical harness FE which provides the connection between the connector CN of the touch screen ET and another vehicle equipment V, such as for example a bus of a communication network (possibly multiplexed).

On entend ici par « faire partie » le fait soit d'être intégré à l'intérieur du faisceau électrique FE, soit de suivre le même chemin que ce dernier (FE), au moins partiellement.The term "being part" is understood here to mean either being integrated within the electrical harness FE, or following the same path as the latter (FE), at least partially.

On notera que lorsque la carte à circuits imprimés CC dispose d'un connecteur J6 ainsi que d'un connecteur J5 (dédié au couplage avec un réseau de communication multiplexé de type CAN (« Controller Area Network ») embarqué dans le véhicule V), la déconnection de l'épissure de masse existante entre la masse du réseau LIN et du réseau CAN peut permettre de mettre en l'air le fil conducteur FC et ainsi de réaliser l'effet escompté de réduction des perturbations électromagnétiques.It will be noted that when the printed circuit board CC has a connector J6 as well as a connector J5 (dedicated to coupling with a multiplexed communication network of the CAN ("Controller Area Network") type on board the vehicle V), the disconnection of the existing ground splice between the ground of the LIN network and of the CAN network can make it possible to expose the conductive wire FC and thus achieve the expected effect of reducing electromagnetic interference.

Claims (7)

  1. A display device (DA) for electronic equipment (EE) comprising an antenna (AR) adapted to receive radio waves, said device (DA) comprising a touch screen (ET) provided with a printed circuit board (CC) configured to control display means of the touch screen (ET) and emitting in operation electromagnetic waves, characterized in that it further comprises a conductive wire (FC) having a first end coupled to a ground of said printed circuit board (CC) and a second end free, and defining an auxiliary antenna configured to capture at least part of the energy of said electromagnetic waves generated by the printed circuit board (CC) of the display, so as to reduce electromagnetic disturbances caused by said electromagnetic waves, said conductive wire (FC) having a diameter of between 1 mm and 4 mm and a length of between 30 cm and 70 cm, said conductive wire (FC) being connected to a ground pin of a connector attached to said printed circuit board (CC).
  2. Device according to claim 1, characterised in that said conductive wire (FC) is made of copper.
  3. Electronic equipment (EE) comprising radio reception means including an antenna (AR) suitable for receiving radio waves, characterised in that it further comprises a display device (DA) according to one of the preceding claims.
  4. Electronic equipment according to the preceding claims, characterised in that it constitutes a car radio with a touch screen.
  5. Electronic equipment according to any of claims 3 and 4, characterised in that said radio waves define at least radio programmes.
  6. Vehicle (V), characterised in that it comprises at least one piece of electronic equipment (EE) according to one of claims 3 to 5.
  7. Vehicle according to the preceding claim, characterised in that it is of the automobile type.
EP16809911.7A 2015-10-22 2016-10-20 Touch-screen display device with reduced interfering electromagnetic radiation emission Active EP3365940B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1560105A FR3042916B1 (en) 2015-10-22 2015-10-22 TOUCH SCREEN DISPLAY DEVICE WITH REDUCED INTERFERING ELECTROMAGNETIC TRANSMISSION
PCT/FR2016/052714 WO2017068290A1 (en) 2015-10-22 2016-10-20 Touch-screen display device with reduced interfering electromagnetic radiation emission

Publications (2)

Publication Number Publication Date
EP3365940A1 EP3365940A1 (en) 2018-08-29
EP3365940B1 true EP3365940B1 (en) 2022-08-31

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EP16809911.7A Active EP3365940B1 (en) 2015-10-22 2016-10-20 Touch-screen display device with reduced interfering electromagnetic radiation emission

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EP (1) EP3365940B1 (en)
CN (1) CN108140942A (en)
FR (1) FR3042916B1 (en)
WO (1) WO2017068290A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114338956B (en) * 2020-09-30 2024-07-23 北京小米移动软件有限公司 Image processing method, image processing apparatus, and storage medium

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7176839B2 (en) * 2004-02-17 2007-02-13 Matsushita Electric Works, Ltd. Antenna unit
US9325064B2 (en) * 2011-08-18 2016-04-26 Sony Corporation Mobile terminal
CN103336559B (en) * 2013-06-14 2018-01-09 业成光电（深圳）有限公司 Touch-control module and portable electron device
CN103425373B (en) * 2013-07-25 2016-06-22 敦泰科技有限公司 A kind of capacitance touch screen and there is the radio-based electronic devices of this capacitance touch screen
CN104881088A (en) * 2015-06-11 2015-09-02 湖南伊宅购购物股份有限公司 Intelligent network media terminal applied to bus

Also Published As

Publication number Publication date
CN108140942A (en) 2018-06-08
FR3042916A1 (en) 2017-04-28
WO2017068290A1 (en) 2017-04-27
EP3365940A1 (en) 2018-08-29
FR3042916B1 (en) 2017-12-01

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