• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    - une dalle tactile (6) de dimensios sensiblement identiques à celles de la dale de visualisation, ladite dalle tactile étant située au-dessus de ladite dalle de FIG. 5 visualisation, sa face inférieure étant disposée juste au-dessus du film de blindage, Le dispositif de _ visualisation selon l'invention comporte un film (8) conducteur souple qui réalise la reprise de masse entre le film de blindage électrique et le fond du support mécanique conducteur, le contact entre le film conducteur et le film de blindage étant assuré sur la périphérie de la dalle de visualisation. The general field of the invention is that of flat panel display devices having a touch surface. Such a device comprises a mechanical support (2) conductor in which are housed: - on the bottom of the support, a slab (1) for visualization comprising, on its upper face, a transparent electric shielding film (3) of substantially identical dimensions those of the matrix slab; - A touch screen (6) dimensios substantially identical to those of the display dale, said touch screen being located above said slab of FIG. 5 view, its lower face being disposed just above the shielding film, The display device according to the invention comprises a flexible conductive film (8) which performs the mass recovery between the electrical shielding film and the bottom of the conductive mechanical support, the contact between the conductive film and the shielding film being provided on the periphery of the display panel.
    公开号:BE1022534A9
    申请号:E20155588
    申请日:2015-09-22
    公开日:2016-09-28
    发明作者:Laurent Mozer；Marina Flourez；Pascal Abomnes
    申请人:Thales Sa；
    IPC主号:
    专利说明:

    Display device with a tactile surface, in particular a haptic surface, comprising a flexible electrical shielding
    The field of the invention is that of display devices comprising a transparent display matrix and a tactile surface, the device being able to be haptic. The preferred field of application is aeronautics and dashboard visualization systems. Generally, a flat panel display device comprises a glass slab disposed in a metal support. There are different types of visualization devices. These include liquid crystal devices, also known as "LCD". It is necessary, in a number of applications where the electromagnetic environment can be highly disturbed, to electrically shield the front faces of the display devices so as to limit electromagnetic problems.
    There are different ways to achieve the shielding of the glass slab that must remain transparent. Among others, the use of "ITO" coating or treatment means "Indium Tin Oxide", micro-mesh conductive microfilm films, carbon nanotube films, coalescence metal deposits, and the like. silver. This shield, to be effective, must be connected to the metal support. Generally, as illustrated in FIG. 1, which represents a sectional view of a viewing glass slab 1 in its support 2, this mass recovery on the shielding 3 is provided by a shielding joint 4 called "CEM", which stands for "Electro-Magnetic Compatible" maintained by a metal frame 5 attached to the main support of the glass slab 1. This solution gives good results provided that the recovery is done directly on the shield.
    Currently, in a large number of applications, the display device comprises a touchscreen disposed above the glass slab used for viewing. To ensure continuity of shielding, there are different possible solutions. The first solution is illustrated in Figure 2. It consists in adding the touch screen 6 above the previous metal frame 5. As seen in Figure 2, there is therefore an air gap between the glass slab and the touch screen. This air gap has several disadvantages. The mechanical strength of the whole is not excellent. In addition, the touch screen introduces additional reflections and causes a loss of optical transmission.
    The second solution is to stick the touch screen 6 on the shield without modifying the previous architecture, thus eliminating the problems due to the air gap. This solution is illustrated in Figure 3. It has a problem of compactness.
    The display device according to the invention does not have these disadvantages. It has the main characteristic that the mass recovery is no longer provided by a peripheral seal but by a flexible conductive film of low thickness. More specifically, the subject of the invention is a flat-screen display device comprising a touch-sensitive surface, said device comprising at least one conductive mechanical support in which: - on the bottom of the support, a matrix display slab comprising, on its upper face, a transparent electrical shielding film of dimensions substantially identical to those of the matrix slab; a touch-sensitive panel of dimensions substantially identical to those of the display matrix slab, said touch-sensitive panel being located above said display matrix slab, its lower face being disposed just above the shielding film, characterized in that a flexible conductive film ensures the resumption of mass between the electric shielding film and the bottom of the conductive mechanical support, the contact between the flexible conductive film and the shielding film being provided on the periphery of the matrix display panel.
    Advantageously, the conductive film is held on the electrical shielding film by means of a conductive adhesive or a conductive adhesive or a conductive ink.
    Advantageously, the conductive film is a metallized nylon fabric.
    Advantageously, the display matrix slab is in the form of liquid crystals or organic light-emitting diodes or is a matrix of electromechanical micromirrors. The invention also relates to a display device as described above and comprising a haptic function provided by vibrating means arranged between the display matrix slab and the bottom of the support, the conductive film being flexible enough not to disturb the movements of the matrix matrix visualization due to haptic effects. The invention will be better understood and other advantages will become apparent on reading the description which follows given by way of non-limiting example and by virtue of the appended figures among which:
    FIG. 1 represents a display device with a mass recovery without a touch screen according to the prior art;
    FIG. 2 represents a first display device configuration comprising a touchscreen and a mass recovery according to the prior art;
    FIG. 3 represents a second display device configuration comprising a touch screen and a ground resumption according to the prior art;
    FIG. 4 represents a display device comprising a touchscreen and a mass pickup according to the invention;
    FIG. 5 represents a display device comprising a touch screen and haptic functions and a mass recovery according to the invention.
    FIG. 4 represents a partial sectional view of a display device according to the invention. It comprises a mechanical support 2 electrically conductive. This support 2 comprises a bottom and side walls in which are housed: a display matrix plate 1 comprising, on its upper face, a transparent electric shielding film 3 of dimensions substantially identical to those of the matrix slab. In Figure 4, said touch screen is based on a metal frame 7; a touch-sensitive panel 6 of dimensions substantially identical to those of the display matrix slab 1, said touch-sensitive panel being situated above said display matrix slab, its lower face being disposed just above the shielding film 3; a flexible conductive film 8 which ensures the resumption of mass between the electric shielding film and the bottom of the conductive mechanical support 2, the contact between the flexible conductive film 8 and the shielding film 3 being ensured on the periphery of the matrix slab of visualization. The shielding film is slid along the side walls of the mechanical support 2. For example, the conductive film is a metallized nylon fabric.
    Maintaining the conductive film on the electrical shielding film is achieved by means of a conductive adhesive or a conductive adhesive or a conductive ink. These solutions are usually implemented for the reports of electric hoses called "flex" or the flexible connections of visualization matrixes, of liquid crystal type, connections called "tabs". Staples or seam type fasteners usually used for fabrics can also be used.
    The flexible film is grounded ad hoc or continuously at the bottom of the support or its metal frame as seen in Figure 4.
    The display device may comprise a haptic function provided by vibrating means arranged between the display matrix slab and the bottom of the support. Figure 5 illustrates this arrangement. The haptic means 9 are symbolized by a spring in this FIG. 5. The conductive film is chosen sufficiently flexible so as not to disturb the movements of the matrix display slab due to the haptic effects.
    The advantages of the shielding recovery according to the invention in a touch screen display device are essentially: Simplicity of the device; - Simplicity of implementation; - Excellent continuity of electrical mass; - Absence of additional occlusions both at the glass slab and at the touchscreen; - Ease of adaptation to all types of visualization matrices; - Ability to function including in the presence of haptic means.
    权利要求:
    Claims (5)
    [1]
    1. Flat screen display device comprising a touch surface, said device comprising at least one mechanical support (2) conductor in which are housed: - on the bottom of the support, a slab (1) display matrix comprising, on its face upper, a transparent electric shielding film (3) of dimensions substantially identical to those of the matrix slab; a touch-sensitive panel (6) of dimensions substantially identical to those of the display matrix slab, said touch-sensitive panel being situated above said display matrix slab, its lower face being disposed just above the shielding film, characterized in a flexible conductive film (8) ensures the mass recovery between the electrical shielding film and the bottom of the conductive mechanical support, the contact between the flexible conductive film and the shielding film being ensured on the periphery of the matrix tile of visualization.
    [2]
    2. Display device according to claim 1, characterized in that the holding of the conductive film on the electric shielding film is performed by means of a conductive adhesive or a conductive adhesive or a conductive ink.
    [3]
    3. Display device according to claim 1, characterized in that the conductive film is a metallized nylon fabric.
    [4]
    4. Display device according to claim 1, characterized in that the matrix display matrix is liquid crystal or organic light emitting diodes or is a matrix of electromechanical micro-mirrors.
    [5]
    5. Display device according to claim 1, characterized in that the display device comprises a haptic function provided by vibrating means (9) arranged between the display matrix slab and the bottom of the support, the conductive film being flexible enough not to disturb the movements of the matrix matrix visualization due to haptic effects.
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    同族专利:
    公开号 | 公开日
    FR3026270B1|2016-12-02|
    US20160085306A1|2016-03-24|
    BE1022534A1|2016-05-24|
    FR3026270A1|2016-03-25|
    JP2016071364A|2016-05-09|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR1402111A|FR3026270B1|2014-09-22|2014-09-22|TOUCH SURFACE DISPLAY DEVICE, ESPECIALLY HAPTICAL, INCLUDING FLEXIBLE ELECTRIC SHIELDING|
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