EP1618544A2 - Flexibler anzeigevorrichtung - Google Patents

Flexibler anzeigevorrichtung

Info

Publication number
EP1618544A2
EP1618544A2 EP04742517A EP04742517A EP1618544A2 EP 1618544 A2 EP1618544 A2 EP 1618544A2 EP 04742517 A EP04742517 A EP 04742517A EP 04742517 A EP04742517 A EP 04742517A EP 1618544 A2 EP1618544 A2 EP 1618544A2
Authority
EP
European Patent Office
Prior art keywords
display
light sources
light
flexible support
diffusing element
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.)
Granted
Application number
EP04742517A
Other languages
English (en)
French (fr)
Other versions
EP1618544B1 (de
Inventor
Emmanuel Deflin
Emeric Mourot
Michel Remy
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.)
Orange SA
Original Assignee
France Telecom SA
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 France Telecom SA filed Critical France Telecom SA
Publication of EP1618544A2 publication Critical patent/EP1618544A2/de
Application granted granted Critical
Publication of EP1618544B1 publication Critical patent/EP1618544B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F21/00—Mobile visual advertising
    • G09F21/02—Mobile visual advertising by a carrier person or animal

Definitions

  • the present invention relates to the field of flexible displays and more particularly flexible displays that can be integrated into textile supports, for example clothing. This is called foldable displays.
  • the applications relate, among other things, to the advertising, security, leisure and even event-oriented sectors. They relate in particular to the dissemination of visual information on a person's clothing, and allow this information to be perceived by people located in the immediate vicinity of the display.
  • An object of the present invention is to provide a flexible display which is less affected by the above limitations.
  • the invention proposes a flexible display comprising: a flexible support,
  • control and supply means included in the flexible support, for transmitting between the control and supply means and the discrete light sources, control and supply signals for discrete light sources,
  • a diffusing element covering the light sources so as to diffuse the light coming from two adjacent discrete light sources to produce a substantially continuous light display on a face of the diffusing element opposite the light sources.
  • the diffusing element makes it possible to increase the visibility of each discrete light source by multiplying its emission surface.
  • One of the advantages of this display is therefore to allow the production of a display of large dimensions, having very good readability, using a limited number of light sources per unit area. Indeed, it makes it possible to space the light sources, which provides a very flexible screen, the joining between the light points being carried out by the diffusing element.
  • the advantages of the display according to the invention there is also an easy embodiment and a limited operating power, since it is proportional to the number of light sources.
  • the light sources are fixed on the flexible support in a matrix arrangement.
  • the display may also include a covering element for the face of the diffusing element, which lets light through.
  • This covering element makes it possible to provide a specific aesthetic covering and thus facilitates integration into a textile support.
  • the light sources can be individually controlled to emit light.
  • the flexible support can be a polymer substrate or film. It is for example made of the material known under the brand "Kapton". It can also consist of a sheet of optical fibers, as presented in patent application FR 0102623.
  • the flexible support is made of fabric and includes woven threads including electrically conductive threads used to transmit the control and power signals. And the discrete light-emitting sources can then be soldered onto the conductor wires.
  • the invention provides a textile structure comprising a display according to the invention.
  • this textile structure for example a garment or a backpack, has a pocket provided with a lower part, and with an upper part allowing the light to pass through, between which at least the flexible support and the plurality of discrete light sources on the display.
  • the pocket may include means for extracting the display. This feature makes it possible to be able to remove the display, in particular for the purpose of allow the washing of the textile structure without risk for the display, or to be able to transpose the display from one textile structure to another.
  • the upper part of the pocket can incorporate the diffusing element of the display. It may further include a surface covering element of the face of the diffusing element.
  • FIG. 1 represents various components of a flexible display in an embodiment of the invention
  • FIG. 2 represents an embodiment of a flexible support according to the invention
  • FIG. 3a represents a display presented by a flexible support according to the invention
  • - Figure 3b shows a display presented by the flexible support of Figure 3a covered with the diffusing element
  • Figure 3c shows a display presented by the display shown in Figure 3b covered with a cover element
  • FIG. 4 represents a transverse view of a first embodiment of a display according to the invention
  • FIG. 5 represents a transverse view of a second embodiment of a display according to the invention
  • FIG. 6 represents a transverse view of a third embodiment of a display according to the invention
  • - Figure 7 shows an embodiment of a textile structure according to the invention.
  • FIG. 1 represents various components of a flexible display 1 in an embodiment of the invention. These different components are shown not superimposed in order to highlight the contribution of each of these components taken individually.
  • This flexible display 1 comprises a flexible support 2. A matrix of 7 ⁇ 5 discrete light sources 3 spaced from one another is fixed on the flexible support 2. This support includes a connector intended for supplying and controlling the light sources 3 from control and supply means which will be described later.
  • the flexible display 1 also comprises a diffusing element 4 covering the light sources 3. This diffusing element 4 increases the visibility of each light source by increasing its emission surface beyond the emission surface of the light sources. It performs an artificial continuous join of two adjacent light sources lit on one of its faces 4a opposite the light sources. In the figures, the light sources shown in hatched outline are on, those in white are off.
  • the flexible display 1 further comprises a cover element 5 for providing a specific covering for the display 1, by means of textile materials, colors and various weaving or knitting patterns.
  • This covering element 5 also brings new physical properties to the display 1, for example sealing or impact resistance. Note that the diffusing element 4 could itself integrate the characteristics presented here by the covering element 5.
  • the flexible support 2 is for example made of fabric. It can be of the type described above.
  • the light sources 3 are light-emitting diodes (LED, "Light-Emitting Diode”) in CMS technology ("Surface Mounted Component") directly addressable and welded to the support 2.
  • the diffusing element 4 is flexible and can be a foam , a fabric or a mesh structure. The diffusing element
  • FIG. 2 represents a flexible fabric support 2 made from woven threads.
  • these threads are electrically conductive threads 21 woven in a mixture with other textile threads.
  • the support 2 is woven for example according to a weave of canvas type, with a sufficiently loose mesh (openwork) to be able to leave visible by segments the conductive threads 21.
  • the threads used have a titration (or a fineness) sufficiently high to confer on the fabric a good surface condition, sufficient to be able to serve as a support for soldering using soldering tools on conventional printed circuits (roughness less than 0.15 mm).
  • the textile threads are, for example, electrically insulating and resistant to physical constraints, in particular from temperatures imposed by welding. They are for example in Cotton, Polyester or Polyamide.
  • the conducting wires 21 can be made of copper, tinned copper, silver copper, or golden copper, and are sheathed by a polymer resin (eg polyester) which electrically insulates them from each other. These conductive threads are woven in a precise weaving weave in order to be able, by grouping, to constitute conductive tracks each carrying a signal from control and supply boxes 22 and 23 to the LEDs 3 arranged on the tracks.
  • a polymer resin eg polyester
  • the conductive tracks each comprise one or more substantially parallel conductive wires, in order to distribute the energy transported.
  • the weaving model used represented in FIG. 2 defines an arrangement of three tracks 24 in a first weft direction T and three tracks 25 in a warp direction C.
  • the LEDs of the directly addressable CMS type are placed at the intersection of the tracks 24 extending along the frame and the tracks 25 extending along the chain.
  • These LEDs 3 comprise a first control electrode 26 welded to a track 24 and a second control electrode 27 welded to a track 25. This welding is done in a very short period of time and at a temperature sufficient to be able to very quickly clear the electrical wires of their insulating protection, which melts under the heat and weld these wires, without however damaging the rest of the fabric.
  • no electrical contact is made, since the wires 21 constituting the tracks, although being in contact by weaving, are electrically isolated from each other by polymer cladding.
  • the wires 21 can be soldered in the same way to rigid printed circuits contained in control boxes 22 and 23. These wires can also be connected to "self-stripping" connectors located in these boxes.
  • a textile finishing may have been applied, by embedding the LEDs 3 in a flexible resin, such as a spray or a polymer coating (for example silicone). Once crosslinked, this protection will retain good flexibility and will keep the LEDs 3 on the fabric, while guaranteeing the tightness of the assembly.
  • the two boxes 22 and 23 are for example electronic boxes for control by multiplexing. They control the lighting of the LEDs 3 and send them an electric current directly as a function of the display intensities desired for each of them, by means of the conducting wires 21.
  • the box 22 controls, for example the chain tracks 25. It is connected to the assembly of one of the ends of the warp tracks and therefore extends in the weft direction along one of the sides of the support 2.
  • the box 23 controls, for example, the weft tracks 24. It is connected to the assembly of one of the ends of the weft tracks and therefore extends in the warp direction along one of the sides of the support 2.
  • the LEDs 3 are controlled for example according to a time scanning principle.
  • the control unit 23 successively connects the weft tracks 24 to a supply terminal. This time scan is not perceptible to the human eye.
  • an LED 3 is effectively supplied and radiates if it is connected to the other supply terminal via a chain track 25 by the housing 22.
  • This selection LED by LED by the housing 22 is obtained for example by means of switches arranged at the input of each chain track 25.
  • Other embodiments of the support furnished with light sources and control and supply means and transmission of the corresponding signals can also be envisaged.
  • FIG. 3a represents the display presented by a flexible support 2 according to the invention on which the LEDs 3 are fixed.
  • the LEDs 3 have been selected so as to display the pattern "A3".
  • FIG. 3b represents the display presented by the face 4a of the diffusing element 4 covering the flexible support furnished with FIG. 3a.
  • Figure 3c shows the display presented by the cover element 5 covering the display shown in Figure 3b.
  • Figures 4 to 6 show several possible embodiments of the display according to the invention, depending on the type of diffusing element 4 chosen.
  • the figures correspond to a cross section of the display 1 at the level of the last line at the bottom of the display 1 shown in FIG. 1 and FIG. 3c.
  • the diffusing element 4 shown in FIG. 4 makes it possible to position the covering element 5 at the desired distance (by varying its thickness) from the LEDs 3.
  • the surface of the light spot or pixel visible from the display 1 according to the invention considered will therefore be a function of the angle of the emission cone ⁇ of the LED, the thickness d of the diffusing element 4, as well as the spacing e between the LEDs.
  • This diffusing element 4 can be made of a foam type material.
  • the LEDs 3 are embedded in a flexible resin 9, which allows the display 1 to withstand the mechanical stresses linked to bending.
  • the light emitted by the LEDs 3 is diffused and diffracted inside a diffusing element made up of transparent encapsulating cells 6. Then it is projected onto the element 5.
  • These cells 6 may advantageously not be integral with each other, and the cover element 5 may not be integral with the cells 6, which guarantees maximum flexibility on the display.
  • the light emitted by the LEDs 3 is diffused directly in a diffusing element 4 further ensuring the functions of covering element made of a material having specific conduction characteristics light, either by the nature of the material used (eg polyester, polyamide, etc.), or by or in combination with its implementation (fabric, mesh structure, non-woven fabric, foam, etc.).
  • a diffusing element 4 is to be able to adapt the elements constituting it according to the desired effect or the constraints imposed.
  • the flexible support comprising the light sources, the diffusing element and possibly the covering element can be assembled by gluing.
  • the flexible support and the diffusing element can be glued, the covering element being simply placed on the diffusing element, in order to allow the sliding of one over the other. This sliding effect has the advantage of reducing the flexural strength of the entire display.
  • the diffusing element and the covering element can be assembled by gluing or sewing, then can be placed on the support furnished with light sources with, in this case also, a possibility of sliding.
  • This assembly must guarantee perfect contact between the various components of the display: support furnished with light sources, diffusing element and possibly covering element to be able to ensure a size as well as a homogeneous visibility of the pixels on the surface of the screen. .
  • Another aspect of the invention relates to a textile structure comprising a display according to the first aspect of the invention.
  • the display can be assembled, definitively or not, to the rest of the textile structure in different ways: by means of conventional donrdashery systems such as zippers, Velcro strips, snaps or by sewing.
  • the display or some of the elements constituting it can also be inserted in a suitable pocket through an opening.
  • This pocket can have a simple holding function with transparency, or further include, as detailed below, the diffusing element and / or the covering element. This pocket can in particular allow the display to be removed from the textile structure.
  • the diffusing element and / or the covering element can be made in the textile structure itself. They may, for example be part of a holding pocket, as mentioned above and as shown in FIG. 7.
  • a shirt 7 has a pocket 8.
  • this upper part is sewn, with the exception of one of the sides, on the rest of the textile structure, thus delimiting, on the rest of the textile structure, a lower part of the pocket, and a housing between the lower part and the upper part 10 of dimension adapted to accommodate a flexible support 2 furnished with LEDs 3 similar to that shown in FIG. 3a.
  • This support can be inserted as shown in Figure 7.
  • the pocket is provided with a closure system 11, for example a zipper.
  • the cover element on the upper part 10 can be adapted so as not to present a visible demarcation with respect to the rest of the surface of the jacket 7 when the display is off.
  • a display device has numerous advantages, in particular in terms of flexibility thanks to the relative freedom which one has on the number of light sources to be used, of display quality due to a pixelation made continuous thanks to the diffusing element. , size, weight and simplicity of implementation. It thus allows the creation of a communicating textile structure, guaranteeing both quality display and wearing comfort.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Electroluminescent Light Sources (AREA)
EP04742517A 2003-04-29 2004-04-15 Flexibler anzeigevorrichtung Expired - Lifetime EP1618544B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0305238A FR2854480A1 (fr) 2003-04-29 2003-04-29 Afficheur souple
PCT/FR2004/000936 WO2004100113A2 (fr) 2003-04-29 2004-04-15 Afficheur souple

Publications (2)

Publication Number Publication Date
EP1618544A2 true EP1618544A2 (de) 2006-01-25
EP1618544B1 EP1618544B1 (de) 2010-07-07

Family

ID=33155517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04742517A Expired - Lifetime EP1618544B1 (de) 2003-04-29 2004-04-15 Flexibler anzeigevorrichtung

Country Status (9)

Country Link
US (2) US20080010877A1 (de)
EP (1) EP1618544B1 (de)
JP (1) JP4768602B2 (de)
CN (1) CN1781132A (de)
AT (1) ATE473500T1 (de)
DE (1) DE602004028001D1 (de)
ES (1) ES2348261T3 (de)
FR (1) FR2854480A1 (de)
WO (1) WO2004100113A2 (de)

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Also Published As

Publication number Publication date
ES2348261T3 (es) 2010-12-02
ATE473500T1 (de) 2010-07-15
EP1618544B1 (de) 2010-07-07
WO2004100113A3 (fr) 2005-01-13
CN1781132A (zh) 2006-05-31
JP2006524834A (ja) 2006-11-02
WO2004100113A2 (fr) 2004-11-18
JP4768602B2 (ja) 2011-09-07
DE602004028001D1 (de) 2010-08-19
FR2854480A1 (fr) 2004-11-05
US20080010877A1 (en) 2008-01-17
US20060207139A1 (en) 2006-09-21

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