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WO2015069884A1 - Système et procédé de commande de changement de couleur à travers des sections transversales variables d'un matériau - Google Patents

Système et procédé de commande de changement de couleur à travers des sections transversales variables d'un matériau Download PDF

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Publication number
WO2015069884A1
WO2015069884A1 PCT/US2014/064332 US2014064332W WO2015069884A1 WO 2015069884 A1 WO2015069884 A1 WO 2015069884A1 US 2014064332 W US2014064332 W US 2014064332W WO 2015069884 A1 WO2015069884 A1 WO 2015069884A1
Authority
WO
WIPO (PCT)
Prior art keywords
busbar
grid
resistance
coupled
cross
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
PCT/US2014/064332
Other languages
English (en)
Inventor
Andrew K. Ruiter
Christopher Kring
Brian K. Servis
Chih-Her Suen
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.)
Johnson Controls Technology Co
Original Assignee
Johnson Controls Technology Co
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 Johnson Controls Technology Co filed Critical Johnson Controls Technology Co
Publication of WO2015069884A1 publication Critical patent/WO2015069884A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/23—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  for the control of the colour
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/32—Photonic crystals

Definitions

  • the present invention relates to a system and method for controlling the change of color within a material, and specifically to controlling the change of color across an electrically- activated material having varying cross-sectional thickness.
  • trim panels such as door sills
  • This backlighting can provide increased visibility in the dark, but can also display the make, model, or logo of the vehicle as an aesthetic accent.
  • the present invention provides, in one aspect, a system including an electrically- activated material having a non-uniform cross-sectional thickness and a busbar coupled to the material.
  • the busbar includes a series of resistors having varying resistance inversely
  • the present invention provides, in another aspect, a system including an electrically-activated material having a non-uniform cross-sectional thickness and a conductive grid coupled to the material.
  • the grid includes varying regions of resistance inversely proportional to the non-uniform cross-sectional thickness.
  • the present invention provides, in yet another aspect, a system including an electrically-activated material having a non-uniform cross-sectional thickness and a conductive member coupled to the material.
  • the conductive member includes means for varying resistance along the conductive member in a manner that is inversely proportional to the non-uniform cross-sectional thickness.
  • FIG. 1 is a perspective view of a system in accordance with an embodiment of the invention for controlling the change of color within a material.
  • FIG. 2 is a schematic cross-sectional illustration of the system of FIG. 1, illustrating a uniformly-changing cross-sectional thickness of the material.
  • FIG. 3 is a schematic cross-sectional illustration of a system for controlling the change of color within a material in accordance with another embodiment of the invention, the material having different, discrete, cross-sectional thicknesses.
  • FIG. 4 is schematic cross-sectional illustration of a system for controlling the change of color within a material in accordance with another embodiment of the invention, the material having a non-uniformly changing cross-sectional thickness.
  • a system 10 for changing the color in a material includes a layer of electrically-activated material 14 having an outer surface 18 and an inner surface 22.
  • the material 14 is a thin film that includes structured photonic crystals which, when activated by a voltage source, change the color of the material 14.
  • the material 14 includes an outer indium tin oxide (ITO) coating that forms the outer surface 18, as well as an inner ITO coating that forms the inner surface 22, to facilitate conductance of electricity through the material 14.
  • ITO indium tin oxide
  • the material 14 may be electrically activated to reflect any color in the visible,
  • the inner surface 22 of the material 14 may be coupled (e.g., adhered) to a surface, such as an interior surface of a vehicle or other structure, to provide aesthetic color changes visible to a driver or passenger when the material 14 is activated (e.g., when the car is started, a door is opened, an activation button is pressed, etc.).
  • the outer surface 18 includes graphics, indicia, or other designs that change color along with the rest of the material 14 when the material 14 is activated. Other constructions include different color- changing, electrically activated materials 14 than that illustrated.
  • the material 14 has a non-uniform cross-sectional thickness to accommodate different contours or recesses within the vehicle or other structure.
  • the material 14 has a uniformly changing cross-sectional thickness, such that a cross- sectional thickness 24 at a first end 26 of the material 14 is larger than a cross-sectional thickness 30 at a second end 34 of the material 14, the cross-sectional thickness decreasing linearly between the first end 26 and the second end 34.
  • the system 10 includes two busbars 38, 42 coupled to the material 14.
  • the busbar 38 is coupled to the outer surface 18, and the busbar 42 is coupled to the inner surface 22.
  • the busbar 42 includes a plurality of resistors 46, 50, 54, and 58 disposed along the busbar 42. In some constructions the busbar 42 includes more or fewer resistors than that illustrated.
  • the busbar 42 has a variable resistance that is inversely proportional to the cross-sectional thickness of the material 14. The resistance in the busbar 42 is approximately 0 at a first end 62 of the busbar. The first end 62 is disposed directly below the first end 26 of the material 14. The resistance level in the busbar 42 increases moving from the first end 62 toward a second end 66 of the busbar 42.
  • the resistor 46 provides a resistance level greater than 0, the resistor 50 provides a resistance level greater than the resistance level of the resistor 46, the resistor 54 provides a resistance level greater than the resistance level of the resistor 50, and the resistor 58 provides a resistance level greater than the resistance level of the resistor 54.
  • the busbar 38 also, or alternatively, includes a plurality of resistors that increase in resistance moving generally from the first end 26 of the material 14 to the second end 34.
  • the busbars 38, 42 are conductive strips (e.g., copper strips) that are placed at opposite ends of the outer surface 18 and the inner surface 22.
  • the busbars 38, 42 serve as positive and negative terminals for passing current through the material 14.
  • the system 10 also includes a controller 60 electrically connected with the busbars 38, 42.
  • the controller 60 is operable to apply a voltage across the busbars 38, 42 for controlling a change of color within the material.
  • the time required to change the color in the material 14 remains approximately equal along the entire width of the material 14 illustrated in FIG. 2.
  • the material 14 above the busbar 42 is thicker. In areas along the busbar 42 with higher resistance, the material 14 above the busbar 42 is thinner. As the material 14 thins moving left to right in FIG. 2, the resistance of the busbar 42 increases due to the different resistance provided by the resistors 46, 50, 54, and 58. Without this variation in resistance, the power input from the busbar 42 would be equal across the material 14, which would result in the outer surface 18 along the thinner portions of the material 14 changing color faster than along the thicker portions of the material 14.
  • the material 14 may be desirable to have one or more portions of the material 14 that change color at a slower rate than the rest of the material 14 (e.g., to create a desired visual effect).
  • one or more portions of the material 14 are intentionally designed to change color at a slower rate. For these portions, the resistance levels are set higher along the busbar 42 to slow the rate of color change in these portions.
  • another construction of a system 110 for changing the color in a material includes a layer of electrically-activated material 114 having an outer surface 118 and an inner surface 122.
  • the material 114 is a thin film having the same properties as the material 14 described above.
  • the system 110 includes a busbar 138 (not shown) coupled to the outer surface 118 and a busbar 142 coupled to the inner surface 122.
  • the busbar 142 includes a plurality of resistors 146, 150, and 154. Each resistor 146 provides the same resistance as the other illustrated resistor 146.
  • each resistor 150 provides the same resistance as the other illustrated resistors 150, and each resistor 154 provides the same resistance as the other resistor 154.
  • Other constructions include different numbers and arrangements of resistors along the busbar 142.
  • the material 114 includes a first discrete cross-sectional portion 170 having a first cross-sectional thickness 174, a second discrete cross-sectional portion 178 having a second cross-sectional thickness 182, and a third discrete cross-sectional portion 186 having a third cross-sectional thickness 190.
  • Other constructions include different numbers and shapes of discrete cross-sectional portions.
  • the second cross- sectional thickness 182 is greater than both the first cross-sectional thickness 174 and the third cross-sectional thickness 190.
  • the busbar 142 has a variable resistance that is inversely proportional to the cross-sectional thickness of the material 114. This variable resistance causes the material 114 to change color at approximately the same time in each of the three portions 170, 178, and 186.
  • the resistors 150 which are disposed under the portion 174, each have a resistance less than the resistance of the resistors 146 and 154 positioned under the portions 170, 178, respectively, to account for the larger cross-sectional thickness 182.
  • the material 114 may be desirable to have one or more portions of the material 114 that change color at a slower rate than the rest of the material 114 (e.g., to create a desired visual effect).
  • one or more portions of the material 114 are intentionally designed to change color at a slower rate. For these portions, the resistance levels are set higher along the busbar 142 to slow the rate of color change in these portions.
  • another construction of a system 210 for changing the color in a material includes a layer of electrically-activated material 214 having an outer surface 218 and an inner surface 222.
  • the material 214 is a thin film having the same properties as the materials 14 and 114 described above.
  • the system 210 includes a busbar 238 (not shown) coupled to the outer surface 218 and a busbar 242 coupled to the inner surface 222.
  • the material 214 has a non-uniformly changing cross- sectional thickness.
  • Other constructions include different cross-sectional shapes and thicknesses than that shown.
  • a patterned grid 244 is coupled to (e.g., printed on) the inner surface 222 and coupled to the busbar 242.
  • a grid 244 is instead, or additionally, coupled to the busbar 238 or the outer surface 218.
  • the grid 244 is made of a conductive material, such as copper.
  • the grid 244 includes coarser areas 248 and finer areas 252.
  • the coarser areas 248 include greater spacing or gaps that form areas of higher resistance, whereas the finer areas 252 include closer spacing or gaps that form areas of lower resistance.
  • the coarser and finer areas 248, 252 extend over the entire inner surface 222. In some constructions the grid 244 extends only over a portion of the inner surface 222.
  • the grid 244 has a variable resistance that is inversely proportional to the cross-sectional thickness of the material 214. This variable resistance causes the material 214 to change color at approximately the same time along the entire width of the material 14 illustrated in FIG. 4.
  • the grid 244 forms an infinitely variable resistance network for controlling the resistance in the material 214.
  • the material 214 may be desirable to have one or more portions of the material 214 that change color at a slower rate than the rest of the material 214 (e.g., to create a desired visual effect).
  • one or more portions of the material 214 are intentionally designed to change color at a slower rate. For these portions, the resistance levels are set higher along the grid 244 to slow the rate of color change in these portions.
  • the grid 244 is described and illustrated in the context of a material 214 with non-uniformly changing cross-sectional thickness, in some constructions the grid 244 is instead used with the material 14 or 114. In these constructions the grid 244 either works in conjunction with, or replaces, the resistors 46, 50, 54, 58, 146, 150, and 154 in the busbars 42 and 142 to control the color change in the material 14 or 114.
  • the busbar 242 includes one or more resistors that work in conjunction with, or replace, the grid 244 in the system 210, to control the rate of color change in the material 214.
  • the resistance levels in systems 10, 110, and/or 210 are controlled by a control resistor (not shown), or a tapered semi-conductor (not shown), as opposed to the illustrated resistors 46, 50, 54, 58, 146, 150, and 154, or the grid 244.
  • a control resistor not shown
  • a tapered semi-conductor not shown
  • wires are thicker at one end or region (providing a decreased resistance) and thinner at another end or region (providing an increased resistance), the thicker regions being disposed under smaller cross-sectional thicknesses of the material 14, 114, 214, and the thinner regions being disposed under larger cross-sectional thicknesses of the material 14, 114, 214
  • the wire or wires taper in thickness, providing an infinitely variable resistance network.
  • Other constructions include different structures for controlling the resistance levels.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Push-Button Switches (AREA)

Abstract

L'invention concerne un système qui comprend un matériau activé électriquement possédant une épaisseur transversale non homogène, et une barre omnibus couplée au matériau. La barre omnibus comprend une série de résistances présentant une résistance variable inversement proportionnelle à l'épaisseur transversale non homogène.
PCT/US2014/064332 2013-11-08 2014-11-06 Système et procédé de commande de changement de couleur à travers des sections transversales variables d'un matériau Ceased WO2015069884A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361901865P 2013-11-08 2013-11-08
US61/901,865 2013-11-08

Publications (1)

Publication Number Publication Date
WO2015069884A1 true WO2015069884A1 (fr) 2015-05-14

Family

ID=52001073

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/064332 Ceased WO2015069884A1 (fr) 2013-11-08 2014-11-06 Système et procédé de commande de changement de couleur à travers des sections transversales variables d'un matériau

Country Status (1)

Country Link
WO (1) WO2015069884A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6707518B1 (en) * 1999-07-12 2004-03-16 Coho Holdings, Llc Electro-optic device allowing wavelength tuning
EP1785991A1 (fr) * 2004-08-04 2007-05-16 Asahi Glass Company, Limited Élément de lentille à cristaux liquides et tête optique
WO2008017316A1 (fr) * 2006-08-08 2008-02-14 Gm Global Technology Operations, Inc. Élément de correction optique à base de cristaux liquides pouvant être réglé thermiquement pour un système d'affichage
US20100177025A1 (en) * 2008-04-03 2010-07-15 Takayuki Nagata Information display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6707518B1 (en) * 1999-07-12 2004-03-16 Coho Holdings, Llc Electro-optic device allowing wavelength tuning
EP1785991A1 (fr) * 2004-08-04 2007-05-16 Asahi Glass Company, Limited Élément de lentille à cristaux liquides et tête optique
WO2008017316A1 (fr) * 2006-08-08 2008-02-14 Gm Global Technology Operations, Inc. Élément de correction optique à base de cristaux liquides pouvant être réglé thermiquement pour un système d'affichage
US20100177025A1 (en) * 2008-04-03 2010-07-15 Takayuki Nagata Information display device

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