WO2006021707A1 - Systeme electrochimique comportant au moins une zone de margeage partiel - Google Patents
Systeme electrochimique comportant au moins une zone de margeage partiel Download PDFInfo
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- WO2006021707A1 WO2006021707A1 PCT/FR2005/050596 FR2005050596W WO2006021707A1 WO 2006021707 A1 WO2006021707 A1 WO 2006021707A1 FR 2005050596 W FR2005050596 W FR 2005050596W WO 2006021707 A1 WO2006021707 A1 WO 2006021707A1
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- zone
- stack
- layer
- electroconductive layer
- electrochromic
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/1077—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyurethane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10376—Laminated safety glass or glazing containing metal wires
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10788—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing ethylene vinylacetate
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- 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
- G02F1/15—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 based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/1533—Constructional details structural features not otherwise provided for
Definitions
- Electrochemical system comprising at least one partial margin zone
- the present invention relates to the field of electrochemical devices comprising at least one electrochemically active layer capable of reversibly and simultaneously inserting ions and electrons, in particular electrochromic devices.
- electrochemical devices are used in particular to manufacture glazing whose light transmission and / or energy or light and / or energy reflection can be modulated by means of an electric current.
- the electrochromic systems it is recalled that the latter, in known manner, comprise at least one layer of a material capable of reversibly and simultaneously inserting cations and electrons and whose states oxidation corresponding to the inserted and uninserted states are of distinct coloration, one of the states being generally transparent.
- Many electrochromic systems are built on the following model says
- TC1 and TC2 are electronic conductive materials
- EC1 and EC2 are electrochromic materials capable of reversibly and simultaneously inserting cations and electrons
- EL is an electrolyte material which is both an electronic insulator and an ionic conductor.
- the electronic conductors are connected to an external power supply and the application of a suitable potential difference between the two electronic conductors controls the color change of the system. Under the effect of the potential difference, the ions are disinserted from an electrochromic material and insert into the other electrochromic material through the electrolyte material.
- the electrons are extracted from an electrochromic material to go into the other electrochromic material via the electronic conductors and the external supply circuit to counterbalance the charges and ensure the electroneutrality of the materials.
- the electrochromic system is generally deposited on a transparent medium or not, of organic or mineral nature, which then takes the name of substrate. In some cases two substrates can be used, either each has a part of the electrochromic system and the complete system is obtained by assembling the two substrates, one substrate comprises the entire electrochromic system and the other is intended to protect the system.
- the electroconductive materials are generally transparent oxides whose electron conduction has been amplified by doping such as In 2 O 3 ISn, In 2 O 3 : Sb, ZnO: Al or SnO 2 : F.
- Tin-doped indium oxide In 2 O 3 : Sn or ITO
- one of the electroconductive materials may be metallic in nature.
- tungsten oxide which changes from a blue color to a transparent color according to its insertion state. It is an electrochromic material with cathodic coloration, that is to say that its colored state corresponds to the inserted (or reduced) state and its discolored state corresponds to the uninserted (or oxidized) state.
- an electrochromic material with anodic coloration such as nickel oxide or iridium oxide, the staining mechanism of which is complementary. It follows an exaltation of the luminous contrast of the system. It has also been proposed to use an optically neutral material in the oxidation states concerned, such as, for example, cerium oxide.
- All the aforementioned materials are of inorganic nature but it is also possible to combine organic materials such as electronically conductive polymers (polyaniline ...) or Prussian blue with inorganic electrochromic materials, or even to use only materials organic electrochromes.
- the cations are generally monovalent ions of small size such as H + , Li + but it is also possible to use Ag + or K + ions.
- Electrolytes are generally expected to have high ionic conductivity and to behave passively as the ions pass. Their nature is adapted to the type of ions used for electrochromic switching.
- the electrolytes may be in the form of a polymer or a gel, for example a proton conduction polymer or a lithium ion conductive polymer.
- the electrolyte may also be a mineral layer, in particular based on tantalum oxide. The choice of materials is guided not only by their optical properties but also by considerations of cost, availability, ease of implementation and durability. system. The terms 'durable' and 'durability' are used here in the sense of conserving the luminous properties of systems throughout their use.
- electrolyte it is possible to insert additional material between the electrolyte and at least one of the electrochromic materials, in order to modify the nature of the interface and / or to improve the durability of the system.
- the added material may not fulfill all the conditions normally expected of an electrolyte (for example, possess a lower electrical resistance or be an electrochromic material), the presence of the initial electrolyte guaranteeing the multi-layer or the multi-material as well as created to promote the passage of ions while prohibiting the passage of electrons.
- electrolyte for example, possess a lower electrical resistance or be an electrochromic material
- Such an example is available in EP-0 867 752 for an all-solid electrochromic system in which a layer of tungsten oxide has been inserted between the iridium oxide (the electrochromic material) and the tantalum oxide. (the electrolyte).
- the same approach can be employed in the case of the mixed system described in the article by K. S. Ahn et al., Appl. Phys. Lett. 81 (2002), 3930.
- the electrochromic materials are nickel hydroxide and tungsten oxide and the electrolyte is a solid polymer with proton conduction.
- An additional layer of tantalum oxide was inserted between each electrochromic material and the electrolyte polymer because the direct contact caused degradation of the electrochromic materials.
- the multi-layer or multi-material thus created takes the name of electrolyte because it does not participate in the mechanism of insertion and ionic deinsertion.
- the description of such systems can be found, for example, in European patents EP-0 338 876, EP-0 408 427, EP-O 575 207 and EP-0 628 849.
- the electrolyte is in the form of a polymer or a gel, for example a proton-conductive polymer such as those described in European patents EP-0 253 713 and EP-0 670 346, or a polymer with conduction of lithium ions such as those described in patents EP-0 382 623, EP-0 518 754 or EP-0 532 408;
- the electrolyte is a mineral layer, in particular based on tantalum oxide and / or tungsten oxide, an ionic conductor but an electronic insulator, which is then referred to as "all solid" electrochromic systems.
- the present invention is more specifically concerned with improvements to electrochemical systems belonging to the all-solid systems category, but it is also intended for mixed systems, or even systems in which all the components are of organic nature.
- this objective is difficult to achieve because the system has to cope with a leakage current from one electroconductive layer to the other, especially at the periphery of the system, which tends to return it to its equilibrium state. that is, in its discolored state.
- a first solution consisted in accepting the existence of these leakage currents, and re-supplying electricity to the system when it is in its colored state, according to a given periodicity, to compensate for them.
- a second solution was to mask one of the two electroconductive layers, that is to say to deposit the layers so that they are offset at their periphery, and thus to remove / reduce the current of leakage from one layer to another at their respective peripheries.
- the solution is effective, but complicated the method of manufacturing the system: it requires in particular to deposit at least one of the two electroconductive layers by using a mask on the carrier substrate.
- a third solution described in patent applications FR-2 811 778 and FR 2 821 937 uses a mechanical cutting and / or laser layers to delimit within the stack various electrically insulating and conductive zones.
- the object of the invention is then to remedy these drawbacks, in particular by proposing a new process for treating the electrochemical devices described above in order to improve their performance, particularly in order to limit / eliminate the risks of short circuits, so-called leakage currents and, in fact, to increase their "memory effect", this privileging simplicity in its implementation.
- the invention firstly relates to a process for treating an electrochemical device, comprising at least one carrier substrate provided with a stack of functional layers comprising at least one electrochemically active layer capable of reversibly and simultaneously inserting ions. and electrons, this electrochemically active layer being disposed between two electroconductive layers.
- an electrochemical device of the electrochromic type with a stack of functional layers including at least, successively: a first electroconductive layer, a first electrochemically active layer capable of reversibly inserting ions such as cations; that H +, Li + or anions such as OH-, in particular anodic electrochromic material (or respectively cathodic), an electrolyte layer, a second electrochemically active layer capable of reversibly inserting said ions, in particular an electrochromic material cathodic (or respectively anodic), a second electroconductive layer.
- the method of the invention is characterized in that the functionality of at least one of the functional layers is inhibited locally, at a first partial margin zone (A), with the exception of one of the layers electroconductive layers and of one of the electrochemically active layers, in particular with the exception of the first electroconductive layer (the one closest to the carrier substrate) and the first electrochemically active layer (that which is associated with said first electroconductive layer) and the is inhibited locally, at a second total margin zone (B) adjacent to the first partial margin zone (A), the functionality of all the functional layers over the entire thickness of the stack of layers, said second total margin zone (B) revealing at least one surface portion of said carrier substrate.
- A first partial margin zone
- B second total margin zone
- one or more of the following provisions may be used in addition: the functionality of the first electroconductive layer is locally inhibited, so that to define all around said stack a third zone of total peripheral margin without layers, said third zone of total margin leaving at least a surface portion of said carrier substrate, the function of the first electroconductive layer is inhibited locally, so that that the third total margin zone is situated at the periphery of the first partial margin zone and / or the second total margin zone, the functionality of at least one of the layers of the stack is inhibited locally by ) degrading on its (their) thickness, by heat treatment or by laser irradiation or mechanical attack, - milking
- the electrical functionality of the last electroconductive layer (the one furthest away from the carrier substrate) is isolated locally by the deposition of an insulating strip at level of at least a surface portion of said stack, said surface portion being substantially positioned above the first partial margin zone and / or the second total margin zone.
- an electrochemical device of electrochromic type treated according to the method according to one of the preceding characteristics comprising at least one carrier substrate provided with a stack of functional layers defining a zone. deposition and comprising successively: a first electroconductive layer (the closest to the substrate), a first electrochemically active layer capable of reversibly inserting ions such as H +, Li + ions or anions such as OH-, especially into an electrochromic anodic (or cathodic) material,
- a second electrochemically active layer capable of reversibly inserting said ions, in particular a cathodic (or respectively anodic) electrochromic material, a second electroconductive layer
- said device is characterized in that the stack of functional layers is deactivated, with the exception of the first electrochemically active layer, at at least a first partial margin zone located along at least one edge of said deposition zone.
- the stack of functional layers is deactivated, with the exception of first electrochemically active layer, on the periphery of said deposition zone and respectively along each edge of said deposition zone,
- the stack of functional layers is deactivated, over at least part of its periphery, at at least one second total margin zone located along at least one edge of said deposit zone,
- the first zone of deactivated partial margin is close to the second total margin zone, the second total margin zone being positioned outside the first partial margin zone, the first electroconductive layer is deactivated on its periphery, at a third total margin zone located near the edge of the carrier substrate,
- the electrochemical device comprises first and second current leads in electrical connection with the first electroconductive layer, the first and second current leads are situated respectively along two contiguous edges of the carrier substrate, the first or second current leads are in electrical connection via a network of conducting wires / conductive strips, possibly corrugated, said network being moreover in electrical connection at the level of the second electroconductive layer (furthest from the substrate),
- the conductive network comprises a plurality of essentially metallic wires arranged on the surface of a sheet of polymer, in particular of the thermoplastic type, the wires / strips are arranged substantially parallel to each other, preferably in an orientation substantially parallel to the length or the width of the second electroconductive layer, at least one of the ends of said wires / strips protruding from the region of the substrate covered by said second electroconductive layer on at least one of its opposite edges, in particular at least 0.5 mm,
- the end of the wires / strips located at the first partial margin zone and / or the second total margin zone is electrically isolated from the contact with the active zone of the first electroconductive layer, in particular by tape interposition ( s) of insulating material, said strips being interposed between the second electroconductive layer and said end of the son / strips, at least one of the current leads is in the form of a foil, in particular a metal strip, or in the form of a or several conductive wires, or in the form of a point feed of conductive material, at least one of the current leads is made from an electrically conductive enamel deposited between a surface portion of the carrier substrate and the first electroconductive layer,
- the current supply has at the surface a plurality of grooves positioned substantially transversely to a main axis of said current supply so as to delimit channels
- the electroactive stack covers a deposition zone of the carrier substrate which is a polygon, a rectangle, a rhombus, a trapezium, a square, a circle, a semicircle, an oval, any parallelogram, - it is an electrochromic system, especially of the "all-solid" type, of a viologen system , a liquid crystal system, an optical valve system or a photovoltaic system,
- the electrochromic glazing comprises at least one tinted glass in the mass and / or at least one curved glass and / or tempered glass, it also comprises at least one of the following coatings: infrared reflective coating, hydrophilic coating, hydrophobic coating, photocatalytic coating with antifouling properties, anti-reflective coating, electromagnetic shielding coating, the carrier substrate is rigid, semi-rigid or flexible,
- FIG. 1 is a top view of an electrochemical system according to the invention
- FIG. 2 is a sectional view along I-I of FIG. 1,
- FIG. 3 is a sectional view along II - II of FIG. 1,
- FIG. 2 relates to an electrochemical system 1 according to the invention which can be integrated into a car roof. It comprises successively, from the inside to the outside of the cockpit, two glasses S1, S2, which are clear glasses (they can also be tinted) silico-sodo-calcic of respectively 2.1 mm; 2.1 mm thick for example.
- the glasses S1 and S2 are of the same size and of generally rectangular shape.
- the glass S1 shown in FIGS. 2 and 3 is coated with a stack of electrochromic all-solid thin layers.
- the glass S1 is laminated to the glass S2 by a thermoplastic sheet 8 of polyurethane (PU) 0.8 mm thick (it can be replaced by a sheet of ethylenevinylacetate (EVA) or polyvinylbutyral (PVB).
- PU polyurethane
- EVA ethylenevinylacetate
- PVB polyvinylbutyral
- the "all solid" electrochromic thin film stack comprises an active stack placed between two electronically conductive materials also called current collectors 1 and 5.
- the collector 1 is intended to be in contact with the substrate Sl and constitutes the first electroconductive layer (the closer to the carrier substrate) of the stack of functional layers, while the collector 5 is the second electroconductive layer (furthest from the carrier substrate) of the stack of functional layers.
- the collectors 1 and 5 and the active stack can be either substantially identical in size and shape, or are substantially of different size and shape, and it is conceivable that the path of the collectors 1 and 5 will be adapted according to the configuration. . Furthermore, the dimensions of the substrates in particular Sl can be substantially greater than those of 1, 5 and the active system.
- the collectors 1 and 5 are of metallic type or of the type TCO (Transparent Conductive Oxide) in ITO, SnO 2 : F, ZnO: A1, or be a TCO / metal / TCO type multi-layer, this metal being chosen in particular from silver, gold, platinum, copper. It may also be a NiCr / metal / NiCr type multi-layer, the metal being also chosen in particular from silver, gold, platinum and copper.
- TCO Transparent Conductive Oxide
- the glazing incorporates current leads 6 which control the active system via a power supply. These current leads are of the type used for heated glazing (ie foil, wire or the like).
- a preferred embodiment of the collector 1 is to deposit on the inner face of the carrier substrate Sl a first 50 nm SiOC layer surmounted by a second layer SnO 2 : F 400 nm (two layers preferably deposited successively by CVD on the float glass before cutting).
- a second embodiment of the collector 1 consists of depositing on the carrier substrate Sl bilayer consisting of a first layer doped with SiO 2 doped or not (in particular doped with aluminum or boron) of about 20 nm surmounted by a second ITO layer of about 100 to 600 nm (two layers preferably deposited successively, under vacuum, by magnetic field assisted sputtering and reactive in the presence of oxygen, possibly in the hot state).
- collector 1 is to deposit on the carrier substrate Sl a monolayer consisting of ITO of about 100 to 600 nm (a layer preferably deposited, under vacuum, magnetic field assisted sputtering and reactive field in the presence of oxygen and hot)
- the collector 5 is a layer of ITO 100 to 500 nm also deposited by reactive sputtering assisted by magnetic field on the active stack, possibly hot.
- the active stack represented in FIGS. 2 and 3 is decomposed in the following manner: a layer of anodic electrochromic material 2 in iridium oxide hydrate of 40 to 100 nm, alloyed or not with other metals, this layer of electrochromic material constitutes a first electrochemically active layer capable of reversibly and simultaneously inserting ions and electrons (alternatively not shown in the figures, the layer of anodic material is based on a layer of nickel oxide hydrated from 40 to 300 nm) a layer 3 of hydrated tantalum oxide or of hydrated silica oxide or of hydrated zirconium oxide of 100 nm or a mixture of these, optionally a layer of tungsten oxide of 100 nm is inserted between the layer 2 and layer 3 (not shown in FIGS.
- the glazing shown in Figures 1, 2 and 3 incorporates (not shown in the figures) a first peripheral seal in contact with the faces 2 and 3, the first seal being adapted to provide a barrier to external chemical attack.
- a second peripheral seal is in contact with the edge of Sl, the edge of S2 and the external face (that directed outwardly), so as to provide: a barrier, a mounting means with the vehicle, a seal between interior and exterior, an aesthetic function, a means of incorporating reinforcing elements.
- the active stack is then a margin (so as to inhibit the functionality of at least one electrically active and / or electrochemically active layer of the stack of functional layers) on all or part of its periphery of grooves produced by mechanical means or by thermal means, in particular by laser radiation attack, possibly pulsed, in order to limit peripheral electrical leakage.
- the active stack is thus deactivated, with the exception of the first electrochemically active layer (that which is deposited on the first electroconductive layer - the closest to the carrier substrate), over at least part of its periphery, at the level of at least one first margin zone located along at least one edge of the zone on which the stack of functional layers is deposited.
- This first zone of margin A is said to be "partial” in view of the fact that part of the layers of the stack (on their thickness) has not been destroyed, namely in this case, the first electroconductive layer 1 and the first electrochemically active layer 2.
- the functionality of at least one of the layers is therefore locally inhibited by leaving the latter (s) on its (their) thickness (s) along a closed line making it possible to delimit the inactive zone of the stack between said closed line and the edge / edge of the stack (considering that all or most of the layers have similar dimensions and / or are exactly superimposed on each other.)
- the first electroconductive layer is of dimensions a little superior to all others, to facilitate its electrical connection with the second layer, which allows to lay on its surface which "exceeds" the stack the necessary connectors elements commonly called current leads 6.
- This partial margin A thus provides a groove that inhibits the circuit as explained above and leave the periphery of the device inactive functionally.
- one margin partially, on each side of the stack, along a closed line having, in smaller proportions, a profile similar to or identical to that of the edge of the stack (or the edge of the first layer which is subject to margination, if the underlying layers are of slightly different dimensions, especially the first as mentioned above).
- the partial margin A is operated by any mechanical means, in particular cutting, or advantageously by laser irradiation.
- One embodiment is to leave the device motionless during processing and to mount the mechanical means / laser transmitter on a movable member, another embodiment of which is to do the reverse.
- Other means can be used to achieve the abrasion margin.
- This operation of margination can be operated by a laser beam, it may be interesting to choose a colored state, to increase the absorption of the laser by the stack at the wavelength used.
- This active stack of functional layers has at least one second B-region whose functionality has been disabled.
- This second equalization zone B is called a total margin zone because the function of all the layers of the stack, including the functionality of the first electroconductive layer 1 (the one closest to the carrier substrate), is inhibited.
- This second total margin zone B is positioned recessed and directed outwards relative to the first partial or selective margin.
- the partial margination zones A delimit, in this nonlimiting example, four first zones, each being substantially parallel to an edge of the stack, and then withdrawn from these first zones and further outward appear areas of total margin B (2 in the figures).
- the total equalization areas B are substantially direction parallel to two partial margin zones A and according to a first embodiment, these two partial margin zones A and the total margin zones B are always disjoint. According to a second embodiment, these two zones of partial margin A touch punctually areas of total margin B, without however a total margin zone B overlaps a zone of partial margin A and comes into contact with a portion of surface from the stack directed inwards.
- total margin B there are two areas of total margin B respectively positioned along two opposite and parallel edges of the active stack.
- substrates having more than 2 total margination zones B arranged along adjacent edges (or not), or even configurations with a single total margin zone B.
- the carrier substrate Sl has a third equalizing zone C.
- This third equalization zone C is called a total equalization zone.
- the layers are not inhibited over the entire thickness of the active stack, but simply inhibits the functionality of the first electroconductive layer 1 (Closest to the carrier substrate) so as to appear at the third total margin area C, at least a surface portion of the carrier substrate.
- This third total margin zone C is set back from the zone intended for depositing the stack and as close as possible to the edges / edges of the carrier substrate. As shown in FIG. 1, this third total margin area C is in particular set back from the current leads of the lower and upper electroconductive layers.
- the active stack comprises a second electroconductive layer 5 (furthest from the carrier substrate) which constitutes the upper electrode and which is associated with a network 7 of conductive wires or electrically conductive strips.
- the upper conductive layer 5 is generally of the same dimensions as the active stack and deposited on the same deposition line (sputtering). It is generally doped doped oxide layers of the type ITO or Al doped ZnO, or silver-like metal layer possibly associated with one or possibly also conductive protective layers (Ni, Cr, NiCr, ..), and to one or more protective and / or optical layers of dielectric material (oxide, nitride, fluoride).
- the conductive network 7 comprises a plurality of metal wires disposed on the surface of a sheet of thermoplastic polymer 8: this sheet can be applied with the encrusted wires on its surface on the upper conductive layer. to ensure their physical contact and electrical connection.
- the thermoplastic sheet can be used for lamination of the first glass-type carrier substrate with another glass.
- the son / strips are arranged parallel to each other (they may be rectilinear or wavy), preferably in an orientation substantially parallel to the length or width of the upper conductive layer. (Alternatively, the wires or conductive strips may also cross each other).
- the ends of these son exceed the area of the substrate covered by the upper conductive layer on at least one of its sides, in particular at least 0.5 mm, for example 3 to 10 mm. They may be copper, tungsten, tungsten graphite, or iron-nickel iron-based alloy. It is advisable to prevent the ends of these wires from being in electrical contact with the zones in the vicinity of which total and / or partial A margins have been made. (Avoid a risk of short circuit with the edges active stacking). To this end, the ends of the son can be electrically insulated from these areas by interposing band (s) of insulating material 9, for example based on polymer, possibly adhesive, type adhesive tape.
- the present patent application now focuses on describing different types of current leads 6 and their arrangements in the system.
- the ends of the wires / strips of the conductive network mentioned above can be electrically connected to two current leads in the form of flexible strips of insulating polymer covered on one of their faces. conductive coatings.
- This type of feed is sometimes referred to as "F.P.C. "(Flexible Printed Circuit) or” F.L.C. "(Fiat Laminated Cable) and is already used in various electrical / electronic systems.
- F.P.C. Flexible Printed Circuit
- F.L.C. Fiat Laminated Cable
- the ends of these wires are in electrical contact with two deactivated zones of the lower conductive layer, and these two deactivated zones are in electrical connection with the current leads intended for the upper electrode. It can conveniently be conductive "clips" pinching the carrier substrate in the aforementioned areas. It is an original solution to use the lower electrode to ensure the electrical connection of the upper electrode. As regards the current leads of the lower electrode, it can be electrically connected along two of its opposite edges in active areas and not covered by the active stack. These feeds may be the previously mentioned clips.
- the frame can be one piece, or several parts that are assembled during assembly.
- the current leads of the lower and / or upper electrodes may also be in the form of conventional foils, for example in the form of metal strips of the tin-plated copper type.
- the current leads of the lower and / or upper electrodes may also be in the form of a conductive wire (or several assembled conductor wires). These wires may be copper, tungsten or tungsten graphite and be similar to those used to form the conductive network mentioned above. They may have a diameter ranging from 10 to 600 ⁇ m. This type of son is indeed enough to supply electrically satisfactorily the electrodes, and are remarkably discreet: it may become unnecessary to hide them during assembly of the device.
- the configuration of the current leads is very adaptable.
- active systems that are substantially rectangular have been described in greater detail, but they may have a number of different geometric shapes, in particular following the geometric shape of their supporting substrate: circle, square, semicircle, oval, any polygon, rhombus , trapezium, square, all parallelogram ...
- the current leads are not necessarily for each electrode to supply "pairs" of current supply facing each other. It can thus be, for example, current leads all around the conductive layer (or all at the same time). less that runs along a good part of its periphery). It is quite feasible when the current supply is a simple guide wire. It may even be point current leads, especially when the device is small.
- the device according to the invention can use one or more tinted glass substrates (s) in the mass.
- the glass tinted in the mass is the glass intended to be turned towards the interior of the room or the cabin, the outer glass being clear.
- the tinted glass makes it possible to regulate the level of light transmission of the glazing. Placed on the inside, it limits its heating by absorption.
- the glass (s) can (can) also be curved (s), this is the case in applications as electrochromic automotive roof including. If they are glass substrates they can be clear or dark glass, flat or curved, reinforced by a chemical or thermal tempering or simply cured. Their thickness can vary between 1 mm and 15 mm, depending on the expectations and needs of end users.
- the substrates may be partially coated with an opaque material, in particular on their periphery, in particular for aesthetic reasons.
- the substrates can also have their own functionality (resulting from a stack of at least one layer of solar control type, anti-reflective, low-emissive, hydrophobic, hydrophilic ...) and in this case the electrochromic glazing combines the functions made by each element to meet the needs of users.
- the polymer interlayer is used here for the purpose of associating the two substrates according to the lamination procedure commonly used in the automotive or building world in order to achieve a safety product: anti-ejection or anti-ballast security for a use in the field of transport and security burglar-proof (glass breakage) for use in the field of buildings.
- the lamination operation is also favorable in the sense that it isolates the functional stack against chemical or mechanical aggression.
- the interlayer is preferably selected based on ethylene vinyl acetate (EVA) or its copolymers, it can also be polyurethane (PU), polyvinyl butyral (PVB) thermally crosslinkable resin or one-component thermally (epoxy, PU) or ultraviolet (epoxy, acrylic resin).
- EVA ethylene vinyl acetate
- PVB polyvinyl butyral
- the lamination interlayer is generally transparent, but it can be colored totally or partially to meet the wishes of the users.
- the insulation of the stack from the outside is generally completed by seal systems placed on the fields of the substrates, or even partially inside the substrates.
- the lamination interlayer may also include additional functions such as including an anti-solar function provided for example by a plastic film comprising ITO / Metal / ITO multilayers or a film composed of a stack of organic layers.
- the layers of the active system are preferably deposited by a technique using vacuum, cathode sputtering type, possibly assisted by magnetic field, by thermal evaporation or assisted by an electron flow, by laser ablation, by CVD (Chemical Vapor Deposition), possibly assisted by plasma or microwaves.
- an electrochromic glazing incorporating cumulatively all the provisions of the invention sees passing the increase in TL from 34% / h to 1 to 2% / h.
- This glazing can be used as glazing for the building, glazing for the automobile, glazing of industrial vehicles or public transport, railway, maritime, air, mirrors, mirrors.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/659,087 US7869114B2 (en) | 2004-08-04 | 2005-07-20 | Electrochemical system comprising at least one partial making up zone |
ES05791943.3T ES2525683T3 (es) | 2004-08-04 | 2005-07-20 | Sistema electroquímico que comprende al menos una zona de marginación parcial |
KR1020077002613A KR101284636B1 (ko) | 2004-08-04 | 2005-07-20 | 적어도 하나의 가장자리 영역을 포함하는 전기화학 장치 및 그 처리 방법 |
JP2007524379A JP4926057B2 (ja) | 2004-08-04 | 2005-07-20 | 少なくとも1つの部分的構成ゾーンを備える電気化学システム |
EP05791943.3A EP1776612B1 (fr) | 2004-08-04 | 2005-07-20 | Systeme electrochimique comportant au moins une zone de margeage partiel |
CN2005800263754A CN1993648B (zh) | 2004-08-04 | 2005-07-20 | 包括至少一个局部边缘区的电化学系统 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0451786 | 2004-08-04 | ||
FR0451786A FR2874100B1 (fr) | 2004-08-04 | 2004-08-04 | Systeme electrochimique comportant au moins une zone de margeage partiel |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006021707A1 true WO2006021707A1 (fr) | 2006-03-02 |
Family
ID=34947593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/050596 WO2006021707A1 (fr) | 2004-08-04 | 2005-07-20 | Systeme electrochimique comportant au moins une zone de margeage partiel |
Country Status (8)
Country | Link |
---|---|
US (1) | US7869114B2 (fr) |
EP (1) | EP1776612B1 (fr) |
JP (1) | JP4926057B2 (fr) |
KR (1) | KR101284636B1 (fr) |
CN (1) | CN1993648B (fr) |
ES (1) | ES2525683T3 (fr) |
FR (1) | FR2874100B1 (fr) |
WO (1) | WO2006021707A1 (fr) |
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-
2005
- 2005-07-20 EP EP05791943.3A patent/EP1776612B1/fr active Active
- 2005-07-20 KR KR1020077002613A patent/KR101284636B1/ko not_active IP Right Cessation
- 2005-07-20 WO PCT/FR2005/050596 patent/WO2006021707A1/fr active Application Filing
- 2005-07-20 CN CN2005800263754A patent/CN1993648B/zh not_active Expired - Fee Related
- 2005-07-20 US US11/659,087 patent/US7869114B2/en active Active
- 2005-07-20 JP JP2007524379A patent/JP4926057B2/ja active Active
- 2005-07-20 ES ES05791943.3T patent/ES2525683T3/es active Active
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US5657150A (en) * | 1993-09-10 | 1997-08-12 | Eyeonics Corporation | Electrochromic edge isolation-interconnect system, process, and device for its manufacture |
US5770331A (en) * | 1994-04-20 | 1998-06-23 | Valence Technology, Inc. | Radiation curable frame for stacked cell construction and for edge sealing of electrolytic cells to retard dendritic short-circuits |
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JP2009545015A (ja) * | 2006-07-28 | 2009-12-17 | クロモジェニクス・アクチボラーグ | 湾曲したエレクトロクロミックデバイスの製造方法 |
US11865632B2 (en) | 2011-12-12 | 2024-01-09 | View, Inc. | Thin-film devices and fabrication |
Also Published As
Publication number | Publication date |
---|---|
JP2008509430A (ja) | 2008-03-27 |
EP1776612B1 (fr) | 2014-10-01 |
KR101284636B1 (ko) | 2013-07-10 |
FR2874100B1 (fr) | 2006-09-29 |
CN1993648A (zh) | 2007-07-04 |
US20090284821A1 (en) | 2009-11-19 |
EP1776612A1 (fr) | 2007-04-25 |
KR20070055494A (ko) | 2007-05-30 |
US7869114B2 (en) | 2011-01-11 |
ES2525683T3 (es) | 2014-12-29 |
CN1993648B (zh) | 2011-06-08 |
JP4926057B2 (ja) | 2012-05-09 |
FR2874100A1 (fr) | 2006-02-10 |
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