EP2197245A1 - Panneau de verre incluant des diodes électroluminescentes et un moyen de régulation de la tension - Google Patents

Panneau de verre incluant des diodes électroluminescentes et un moyen de régulation de la tension Download PDF

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Publication number
EP2197245A1
EP2197245A1 EP08170508A EP08170508A EP2197245A1 EP 2197245 A1 EP2197245 A1 EP 2197245A1 EP 08170508 A EP08170508 A EP 08170508A EP 08170508 A EP08170508 A EP 08170508A EP 2197245 A1 EP2197245 A1 EP 2197245A1
Authority
EP
European Patent Office
Prior art keywords
light emitting
glass
panel
emitting diode
conductive layers
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.)
Withdrawn
Application number
EP08170508A
Other languages
German (de)
English (en)
Inventor
Hugues Lefevre
M. Antoine Luijckx
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.)
AGC Glass Europe SA
Original Assignee
AGC Glass Europe 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 AGC Glass Europe SA filed Critical AGC Glass Europe SA
Priority to EP08170508A priority Critical patent/EP2197245A1/fr
Publication of EP2197245A1 publication Critical patent/EP2197245A1/fr
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light

Definitions

  • the present invention relates to a panel of laminated glass, comprising a first sheet of glass, at least two conductive layers, at least one electrical or electronic component and a power source, wherein the at least two conductive layers are provided on one side of the first sheet of glass, the at least two conductive layers are electrically separated from each other, and the at last one electrical or electronic component is electrically connected to one conductive layer and to another conductive layer as well as a method of operating and making the same.
  • Laminated glass is a type of safety glass that holds together when shattered. In the event of breaking, it is held in place by a plastics interlayer, typically of Polyvinylbutyral (PVB), sandwiched between its two or more sheets of glass.
  • PVB Polyvinylbutyral
  • the plastics interlayer keeps the sheets of glass bonded even when broken, and its high strength prevents the sheets of glass from breaking-up into large sharp pieces.
  • a panel of laminated glass with electrical or electronic components typically comprises the steps of depositing a conductive layer on the first sheet of glass, realization of electrical circuits in the conductive layer and depositing of electrical or electronic components on the conductive layer, connected to the electrical circuits.
  • the plastics interlayer is then deposited on the conductive layer.
  • the sandwich is obtained by the application of the second sheet of glass on the plastics interlayer, which is then laminated as outlined before.
  • the luminous intensity of a light emitting diode is a function of the current flowing through the LED.
  • systems for controlling the intensity of an LED known from the prior art use current-regulated power source.
  • these current-regulated power source based systems for the control of the current of an LED in order to control the luminous intensity of the LED, especially for an LED in a panel of laminated glass are complex and costly.
  • an alternative panel of glass comprising a first sheet of glass, at least two conductive layers, at least one light emitting diode and a power source, wherein the at least two conductive layers are provided on one side of the first sheet of glass, the at least two conductive layers being electrically separated from each other, and the at last one light emitting diode being electrically connected to one conductive layer and to another conductive layer, as well as methods of operating and making the same.
  • An advantage of the present invention is the provision of a panel of glass with a light emitting diode, wherein the intensity of the light emitting diode can be controlled in a simple and inexpensive manner.
  • a panel of glass comprising a first sheet of glass, at least to conductive layers, at least one light emitting diode and a power source, wherein the at least two conductive layers are provided on one side of the first sheet of glass, the at least two conductive layers are electrically separated from each other, the at least one light emitting diode is electrically connected to one conductive layer and to another conductive layer, and the power source is adapted for providing electrical power with intermittent operation to the at least one conductive layer to thereby control the power consumption of the at least one light emitting diode, wherein the power source is a voltage-regulated power source, and wherein the panel comprises current regulation means for the at last one light emitting diode, the current regulation means comprising the voltage-regulated power source and the internal resistance of the conductive layers.
  • the invention provides electrical power to the light emitting diode in an intermittent manner thanks to a voltage-regulated power source.
  • the luminous intensity of the light emitting diode can be controlled by applying intermittent electrical power, thus allowing for a simple and inexpensive way for dimming the luminous intensity of the light emitting diode.
  • the electrical power is pulse modulated, e.g. pulse-width modulated.
  • the invention allows for controlling the luminous intensity of the light emitting diode by applying pulse modulated, e.g. pulse-width modulated electrical power.
  • the electrical power is pulse modulated, e.g. pulse-width modulated with a frequency not visible to the human eye, i.e. the intermittent application of the pulse modulated, e.g. pulse-width modulated electrical power to the electrical or electronic component is not visible to the human eye, thus creating the effect of "dimming" the light emitting diode for the human eye.
  • the electrical power is pulse modulated, e.g. pulse-width modulated with a frequency of ⁇ 100 Hz, preferably with a frequency ⁇ 400 Hz and more preferably with a frequency ⁇ 800 Hz.
  • the luminous intensity of the light emitting diode is a function of the frequency at which the electrical power is pulse-modulated, e.g. pulse-width modulated.
  • a plurality of light emitting diodes are provided, wherein the plurality of light emitting diodes are electrically connected in parallel or/and in series by means of a plurality of conductive layers, wherein the light emitting diodes are preferably electrically connected to the conductive layers by means of gluing and/or soldering.
  • Each of the plurality of light emitting diodes may be associated with passive devices such as resistors, capacitors and/or inductors or may include active devices such as transistors, light sources, switches, microprocessors of microcontrollers, chips, ASICs, FPGAs, etc.
  • the resistance of the conductive layer is ⁇ 3 ohm per square, preferably ⁇ 5 ohm per square and more preferable ⁇ 8 ohm per square.
  • the invention allows for controlling the luminous intensity of the light emitting diodes using a voltage regulated power source, given that the conductive layer provides a resistance to the light emitting diodes connected in series with the conductive layer.
  • the voltage-regulated power source associated with the internal resistance of that conductive layer act as a current regulation means for the light emitting diodes.
  • the invention allows for dimming the luminous intensity of the light emitting diode by controlling the voltage of a power source, wherein the electrical power provided by the power source is preferably pulse-width modulated. This is advantageous over the prior art, as the invention allows for a simple and inexpensive way to control the luminous intensity of a light emitting diode, preferably of a panel of glass.
  • a busbar is provided, wherein the busbar is arranged on the conductive layer and the busbar is electrically connected to the conductive layer and to the power supply. It is further preferred that the busbar comprises an adhesive copper.
  • the busbar can be electrically connected to the conductive layer and/or to the power supply by means of gluing and/or soldering. In this way, the busbar allows for a simple and convenient way to electrically connect the conductive layer and the power source.
  • a panel of glass according to further embodiment of the present invention can comprise a plurality of light emitting diodes, or a plurality of groups of light emitting diodes, and a controller to control the power supplied to a first light emitting diode, or a first group of light emitting diodes independently of power supplied to a second light emitting diode, or a second group of light emitting diodes.
  • the panel of glass is a panel of laminated glass further comprising a second sheet of glass and a plastics interlayer, wherein the first sheet of glass and the second sheet of glass are laminated together via the plastics interlayer and the at least two conductive layers are provided between the plastics interlayer and the first sheet of glass.
  • the object of the invention is further addressed by a method for operating a panel of glass, the panel of glass comprising a first sheet of glass, at least two conductive layers and at least one light emitting diode, wherein the at least two conductive layers are provided on one side of the first sheet of glass, the at least two conductive layers are electrically separated from each other, and the at least one electrical light emitting diode ly connected to one conductive layer and to another conductive layer, the method comprising the steps of applying electrical power to the at least two conductive layers with intermittent operation, to thereby control the power consumption of the at least one light emitting diode, wherein the power source is a voltage-regulated power source, and wherein the voltage-regulated power source and the internal resistance of the conductive layers forms at least a part of a current regulation means for the at least one light emitting diode.
  • the method for operating the panel of glass according to the invention is advantageous, since it, for example, allows for controlling the luminous intensity of the light emitting diode by interrupting the electrical power, i.e. by applying electrical power in an intermittent way, thus allowing for dimming the light emitting diode.
  • Each of the light emitting diodes may be associated with passive devices such as resistors, capacitors and/or inductors or may include active devices such as transistors, light sources, switches, microprocessors of microcontrollers, chips, ASICs, FPGAs, etc.
  • the step interrupting the electrical power comprises pulse modulation such as pulse-width modulating. It is preferred that the electrical power is pulse modulated, e.g. pulse-width modulated at a frequency not visible to the human eye. It is further preferred that the electrical power is pulse modulated, e.g. pulse-width modulated with a frequency of ⁇ 100 Hz, preferably with a frequency of greater of ⁇ 400 Hz and more preferably with a frequency of ⁇ 800 Hz.
  • the resistance of the conductive layer is ⁇ 3 ohm per square, preferably ⁇ 5 ohm per square and more preferably ⁇ 8 ohm per square.
  • the luminous intensity of the light emitting diode can be controlled by electrical power that is voltage regulated, wherein the electrical power preferably comprises pulse-width modulating.
  • the voltage-regulated power source associated with the internal resistance of that conductive layer act as a current regulation means for the diodes. Therefore, the invention allows for a simple and inexpensive way to regulate the luminous intensity and/or for dimming the luminous intensity of at least one light emitting diode in a panel of glass.
  • a plurality of conductive layers and a plurality of light emitting diodes are provided, wherein the plurality of light emitting diodes are electrically connected in series and/or in parallel via the plurality of conductive layers. It is preferred that the light emitting diode(s) is(are) electrically connected to the conductive layer by means of soldering and/or gluing.
  • the panel of glass is a panel of laminated glass further comprising a second sheet of glass and a plastics interlayer, wherein the first sheet of glass and a second sheet of glass are laminated together via the plastics interlayer and the at least two conductive layers are provided between the plastics interlayer and the first sheet of glass.
  • the panel of laminated glass according to the invention can be manufactured at low cost and in a simple way with manufacturing methods known from the prior art.
  • the method may be used with a glass panel comprising a plurality of light emitting diodes, or a plurality of groups of light emitting diodes, and the method comprises supplying power to a first light emitting diode, or a first group of light emitting diodes independently of a second light emitting diode, or a second group of light emitting diodes.
  • a panel of laminated glass comprises four conductive layers 1, which are electrically separated from each other.
  • the four conductive layers 1 are provided on one side of a first sheet of glass, not depicted.
  • the four conductive layers 1 are obtained thanks to a first step of deposition of a global conductive layer on all the surface of one side of the first sheet of glass and to a second step of patterning (e.g. thanks to a laser ablation or chemical etching) the global conductive layer such as to provide the four conductive layers 1.
  • Each of the three light emitting diodes 2 is electrically connected to one conductive layer 1 and to another conductive layer 1.
  • Each of the light emitting diodes may be associated, in the panel, with passive devices such as batteries, resistors, capacitors and/or inductors or may include active devices such as transistors, light sources, switches, microprocessors of microcontrollers, chips, ASICs, FPGAs, memories, transmitters, receivers, wireless transceivers, detectors such as optical or mechanical detectors or sensors, etc.
  • Fig. 2 shows an equivalent circuit diagram of the panel of laminated glass according to the preferred embodiment of the invention, comprising light emitting diodes 2 and resistances 3 connected in series.
  • the resistance 3 of the equivalent circuit diagram equals to the (inner) resistance 3 of the conductive layer 1, as shown in Fig. 1 .
  • the conductive layer 3 can be provided in a substantially, neutral chemical vapour deposition (CVD) coating stack comprising an SiO x C y undercoat and an overlying SnO 2 :F-coating, wherein the resistance 3 of the conductive layer 1 is ⁇ 3 ohm per square, preferably ⁇ 5 ohm per square and more preferably ⁇ 8 ohm per square.
  • the electrical insulation between the conductive layers 1 can be provided by laser ablation of about 70 microns width.
  • the deposition of the conductive layers 1 can be done in a partial way, which eliminates the need for laser ablation for creating the electrical insulation between the conductive layers 1.
  • the LED can be provided for instance as a packaged LED manufactured by the company Nichia.
  • the conducting layer 1 comprises a resistance 3, so that the luminous intensity of the light emitting diodes 2 can be controlled by a voltage-regulated power source.
  • the luminous intensity of the light emitting diodes 2 can be controlled by electrical power that is pulse-width modulated.
  • the electrical power is pulse-width modulated with ⁇ 100 Hz, preferably with ⁇ 400 Hz and more preferably with ⁇ 800 Hz. In this way, invention allows for a simple and inexpensive way to control the luminous intensity of an light emitting diodes 2 provided in a panel of laminated glass.
  • Fig. 3 shows a top view of a part of a panel of laminated glass according to another preferred embodiment of the invention.
  • a plurality of light emitting diodes 2, which are connected in series by the conductive layers 1, are connected in parallel to a busbar 4.
  • the busbar 4 is connected to the conductive layer 1 and/or the conductive layer 1 is connected to the light emitting diode 2 by means of gluing and/or soldering. Further, the busbar 4 allows for the provision of electrical power to the conductive layer 1.
  • the electrical power is pulse modulated, e.g. pulse-width modulated with a frequency of ⁇ 100 Hz, preferably with a frequency ⁇ 400 Hz and more preferably with a frequency ⁇ 800 Hz.
  • the luminous intensity of the light emitting diodes is a function of the frequency at which the electrical power is pulse-modulated, e.g. pulse-width modulated.
  • a plurality of electrical or electronic components are provided, wherein the plurality of light emitting diodes are electrically connected in parallel or/and in series by means of a plurality of conductive layers, wherein the light emitting diodes are preferably electrically connected to the conductive layers by means of gluing and/or soldering.
  • the plurality of light emitting diodes may be associated with passive devices such as resistors, capacitors and/or inductors or may include active devices such as transistors, light sources, switches, microprocessors of microcontrollers, chips, ASICs, FPGAs, etc.
  • the resistance of the conductive layer is ⁇ 3 ohm per square, preferably ⁇ 5 ohm per square and more preferable ⁇ 8 ohm per square.
  • the invention allows for controlling the luminous intensity of the light emitting diode using a voltage regulated power source, given that the conductive layer provides a resistance to the light emitting diode connected in series with the conductive layer. Therefore, the invention allows for dimming the luminous intensity of the light emitting diode by controlling the voltage of a power source, wherein the electrical power provided by the power source is preferably pulse-width modulated. This is advantageous over the prior art, as the invention allows for a simple and inexpensive way to control the luminous intensity of an light emitting diode, preferably of a panel of laminated glass.
  • a busbar 4 is provided, wherein the busbar 4 is arranged on the conductive layer and the busbar 4 is electrically connected to the conductive layer and to the power supply. It is further preferred that the busbar 4 comprises an adhesive copper.
  • the busbar 4 can be electrically connected to the conductive layer and/or to the power supply by means of gluing and/or soldering. In this way, the busbar allows for a simple and convenient way to electrically connect the conductive layer and the power source.
  • Fig. 4 show a top view of a part of a panel of laminated glass according to Fig. 3 , the plurality of light emitting diodes 2, which are connected in series by the conductive layers 1, are connected in parallel to a busbar 4.
  • the busbar 4 is connected to the conductive layer 1 and/or the conductive layer 1 is connected to the light emitting diode 2 by means of gluing and/or soldering. Further, the busbar 4 allows for the provision of electrical power to the conductive layer 1.
  • a voltage regulator 10 is connected to provide power to the electrical or electronic components 2.
  • the voltage regulator 10 is adapted to provide pulse modulated voltage regulation, i.e. is a pulse modulated voltage source. It is preferably a pulse-width modulated voltage source.
  • As the light emitting diodes 2 are connected in series each receives the same current. Hence each receives a pulse width modulated current.
  • the voltage across each component will be determined by its impedance and the current flowing through it. If the voltage output of the voltage source 10 is reduced this reduces the voltage across each light emitting diode.

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  • Electroluminescent Light Sources (AREA)
EP08170508A 2008-12-02 2008-12-02 Panneau de verre incluant des diodes électroluminescentes et un moyen de régulation de la tension Withdrawn EP2197245A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08170508A EP2197245A1 (fr) 2008-12-02 2008-12-02 Panneau de verre incluant des diodes électroluminescentes et un moyen de régulation de la tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08170508A EP2197245A1 (fr) 2008-12-02 2008-12-02 Panneau de verre incluant des diodes électroluminescentes et un moyen de régulation de la tension

Publications (1)

Publication Number Publication Date
EP2197245A1 true EP2197245A1 (fr) 2010-06-16

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EP08170508A Withdrawn EP2197245A1 (fr) 2008-12-02 2008-12-02 Panneau de verre incluant des diodes électroluminescentes et un moyen de régulation de la tension

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016192968A1 (fr) * 2015-06-01 2016-12-08 Agc Glass Europe Procédé pour l'alimentation électrique d'un composant électronique d'un vitrage feuilleté, vitrage feuilleté pour la mise en œuvre dudit procédé

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6270236B1 (en) * 1998-11-27 2001-08-07 Siemens Aktiengesellschaft L.E.D Lighting unit with transparent carrier panel
US6293687B1 (en) * 1997-09-24 2001-09-25 Valeo Electronique Circuit with light emitting diodes for a motor vehicle indicator light, and a motor vehicle indicator light having such a circuit
EP1437215A1 (fr) * 2003-01-10 2004-07-14 Glaverbel Vitrage comportant un élément lumineux
EP1840449A1 (fr) * 2006-03-30 2007-10-03 Glaverbel Panneau lumineux

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6293687B1 (en) * 1997-09-24 2001-09-25 Valeo Electronique Circuit with light emitting diodes for a motor vehicle indicator light, and a motor vehicle indicator light having such a circuit
US6270236B1 (en) * 1998-11-27 2001-08-07 Siemens Aktiengesellschaft L.E.D Lighting unit with transparent carrier panel
EP1437215A1 (fr) * 2003-01-10 2004-07-14 Glaverbel Vitrage comportant un élément lumineux
EP1840449A1 (fr) * 2006-03-30 2007-10-03 Glaverbel Panneau lumineux

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016192968A1 (fr) * 2015-06-01 2016-12-08 Agc Glass Europe Procédé pour l'alimentation électrique d'un composant électronique d'un vitrage feuilleté, vitrage feuilleté pour la mise en œuvre dudit procédé
JP2018525303A (ja) * 2015-06-01 2018-09-06 エージーシー グラス ユーロップＡｇｃ Ｇｌａｓｓ Ｅｕｒｏｐｅ 積層グレージングユニットの電子部品に電力を供給する方法、および前記方法を実施するための積層グレージングユニット
US10493728B2 (en) 2015-06-01 2019-12-03 Agc Glass Europe Method for supplying an electronic component of a laminated glazing unit with electrical power and laminated glazing unit for implementing said method
EA036760B1 (ru) * 2015-06-01 2020-12-17 Агк Гласс Юроп Способ подачи электроэнергии в электронный компонент многослойного элемента остекления и многослойный элемент остекления для выполнения указанного способа

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