EP3746296A1

EP3746296A1 - Laminated glazing with an electrically controllable device, and production thereof

Info

Publication number: EP3746296A1
Application number: EP19709546.6A
Authority: EP
Inventors: Pascal BAUERLE; Stephan GILLESSEN; Jean-Jacques Bris
Original assignee: Saint Gobain Glass France SAS; Compagnie de Saint Gobain SA
Current assignee: Saint Gobain Glass France SAS; Compagnie de Saint Gobain SA
Priority date: 2018-01-31
Filing date: 2019-01-29
Publication date: 2020-12-09
Also published as: FR3077219B1; KR20200115553A; CN110325359A; AR114744A1; BR112020014076A2; JP2021512039A; US20200369007A1; CN110325359B; WO2019150037A1; FR3077219A1; MX2020008003A; US11407204B2; RU2764164C1; PE20210309A1

Abstract

The invention relates to laminated glazing incorporating an electrically controllable device, and to the production of said glazing, including pre-assembly with a thin plastic strip.

Description

SHEET GLAZING WITH ELECTRO-CONTROLLABLE DEVICE AND MANUFACTURE

The invention relates to a laminated glazing incorporating an electrically controllable device and its manufacture.

Automotive glazing increasingly integrates the lighting or light signaling function by means of inorganic light-emitting diodes.

WO2016079459 discloses a light laminated glazing motor vehicle windshield incorporating diodes on a printed circuit board (PCB for printed circuit board in English) for providing warning light signals to the driver.

More precisely in the embodiment in connection with FIG. 5 of this document, the luminous windshield comprising:

a laminated glazing unit comprising:

a first glazing unit forming an external glazing unit with first and second main faces designated F1 and F2

polyvinyl butyral lamination interlayer (PVB)

a second glazing forming an interior glazing unit with third and fourth main faces, called F3 and F4,

the second and third faces being the internal faces of the laminated glazing

a set of diodes on a printed circuit board called PCB adapted to emit a red signaling warning light to the driver, each diode having a transmitting face emitting in the direction of the inner lens on the so-called front face of the PCB

- on the back of the PCB, a double-sided adhesive tape with a thickness of less than 0.05mm forming a connection between the glazing unit and the PCB.

The formation of bubbles in the double-sided adhesive tape or even blurring of the adhesive tape (transparent) can be observed which can cause appearance defects. The use of this double-sided adhesive tape is also process-compliant and pollutes easily, capturing dust etc.

The manufacture of such a luminous laminated glazing for the automobile or for any other application (building, interior or exterior, equipment, etc.) can thus be improved. More broadly the manufacture of any laminated glazing incorporating an electrically controllable device (discrete, surface etc.) can be improved. Also, the present invention firstly relates to a method of manufacturing a glazing electrically controllable device including a vehicle comprising a particularly curved laminated glazing comprising:

a first glazing element, transparent, in particular made of mineral or plastic glass, in particular curved, possibly clear, extraclear or tinted in particular gray or green, preferably curved, often forming external glazing, with first and second main faces respectively said face F1; and face F2, in particular F1 or F2 being each naked or coated with a layer (transparent or opaque), in particular mineral (functional layer, monolayer or multilayer etc, in particular layer with a thickness of at most 50 μm or even submicron), glazing preferably of thickness for automotive glazing of not more than 2.5 mm, not more than 2.2 mm - in particular 1, 9 mm, 1, 8 mm, 1, 6 mm and 1, 4 mm - or not more than 1 , 3mm or not more than 1 mm

a second glazing, transparent, in particular of mineral glass and preferably clear or extraclear or even tinted or plastic, in particular curved, often forming an interior glazing with third and fourth main faces respectively said face F3 and face F4, in particular F3 or F4 each being bare or coated with a layer (transparent or opaque) in particular mineral (functional layer, monolayer or multilayer etc including layer thickness of at most 50pm or even submicron), thick glazing for automotive glazing preferably less than that of the first glazing, not more than 2.2 mm apart - in particular 1, 9mm, 1, 8mm, 1, 6mm and 1, 4mm - or not more than 1, 3mm or more than 1 mm, the total thickness of the first and second glazings being preferably strictly less than 4 mm, even at 3.7 mm

preferably at least one of the first or second glazings being made of mineral glass, in particular F1 or F2 or F3, F4 each being bare or coated with a layer (transparent or opaque) in particular mineral (functional layer, single or multilayer etc. in particular thick layer of at most 50pm or even submicron)

a lamination interlayer of thermoplastic polymeric material, in particular in one or more layers, in particular having a main face FA in adhesive contact with the second face F2 (bare or coated) and a main face FB in adhesive contact with the face F3 (bare or coated), and in particular a thickness e1 subcentimetric, preferably the majority of the face F2 and the face F3 is in adhesive contact with the lamination interlayer, for automotive glazing preferably e1 at most 1, 8mm, better not more than 1, 2mm and not more than 0,9mm (and better by at least 0.3 mm and even at least 0.5 mm), in particular recessed from the edge of the first glazing by at most 2 mm and set back from the edge of a second glazing of at most 2 mm

preferably at least one of the first or second glazings being made of mineral glass and the laminated glazing comprising between the faces F2 and F3:

an electrically controllable device, in particular a strip (elongate, for example square, rectangular, L-shaped, T-shaped, combed, etc.), comprising a support, in particular a strip (elongate, for example square, rectangular, L-shaped, T-shaped, comb, etc.), in particular of width W2 of at most 1 m or at most 40 cm and even at most 20 cm, 10 cm or 5 cm, of thickness e 2 in particular submillimetric and even at most 0.15 mm, with a front face, a rear face and a wafer, the front face being a carrier in a so-called functional zone of an electrically controllable system of thickness e2, preferably submillimetric, in particular of width W'2-in particular of not more than 5cm; subcentimetric - (discrete component etc) or substantially equal to W2 (surface system), and the front face possibly comprising a power supply area adjacent to the functional area including opening or with an extension beyond the singing of the first or second th glazing, the electrically controllable device being of lower surface to the lamination interlayer, - the device is therefore in a region (in particular peripheral) of the glazing -

And the glazing comprising:

on the rear face, in particular opposite to the functional zone, in particular equipped with discrete electronic opto components or a surface system, a polymeric connecting element having a thickness e3 of at most 0.3 mm, 25mm and even at most 0.15mm, in particular 25 to 100pm, 40 to 70pm and even at most 50pm, in adhesive contact with the rear face and with one of the faces F2 or F3 called contact face (naked or coated, of the aforesaid layer) -, in particular of width W3 of at least 0.8W2 or 0.9W2 and / or of at most 1m or at most 40cm and even at most 20cm , 10cm or 5cm, the connecting element preferably having a lower surface area than the lamination interlayer,

and / or on the front face, on the front surface and / or on the front face, in particular the electrically controllable system, in particular equipped with discrete electronic (opto) components or surface system), another polymeric connection element of thickness e3 not more than 0.3mm, 0.25mm and not more than 0.15mm, particularly 25 to 100pm, 40 to 70pm and even not more than 50pm, in adhesive contact with the electrically controllable device and with the one of the faces F2 or F3 then called bonding face (naked or coated, of said layer mentioned above), opposite the contact face in the case of the two strips), the other connecting element preferably having a lower surface area than the lamination interlayer, in particular of width W '3 of not less than 0.8W2 or 0.9W2 and / or not more than 1m or not more than 40cm and not more than 20cm,

The method comprises the following steps:

before the lamination, the supply of a preassembled element comprising the electrically controllable device, said connecting element and / or the other connecting element and possibly at least one sheet of the lamination interlayer, said assembly sheet, connecting element comprising a plastic strip, preferably thermoplastic, which has a main face called connection face F _L opposite the rear face of the support, preferably in the functional zone and / or in the electrical supply zone, in particular covering (essentially) the back side, plastic strip preferably recessed by at most 5mm or 2mm or 1mm from the edge of the support, or flush with the edge of the support or protruding from the edge of the support (preferably over a limited area ), and the plastic strip having a free main face F '(non-sticky), opposite to the connecting face F _L ,

the connecting face F _L being in adhesive contact or bonded to the rear face (the connecting face F _L protruding or not from the edge of the support)

and or

the connecting face F _L protruding from the edge of the support on at least one side (in particular at the edge of the functional area concerned and / or of the power supply), defining a protruding zone ZD facing a zone ZA of one of the main faces of the assembly sheet, the protruding zone ZD is in adhesive contact or bonded with the zone ZA, preferably ZA is at most 10cm or 5cm or 1cm from the edge of the support -and even protruding on two sides preferably opposite, on three sides, around the periphery of the functional zone etc-, in particular with another protruding zone ZE facing a zone ZB of one of the main faces of the assembly sheet, for example ZD and ZE protruding from two opposite sides of the support, preferably ZA and ZB are at most 10cm or 5cm or 1cm from the edge of the support

and or

the other connecting element comprising a plastic strip, preferably thermoplastic, which has a main face called another connecting face F ' _L facing the front surface of the device, and the plastic strip having a free main face F "( non-tacky), opposite to the other bonding face F ' _L the other bonding face F ' _L being in adhesive contact or glued to the electrically controllable device (to the electrically controllable system, and / or to the front face), the other connecting face F' _L protruding or not from the edge of the support)

and or

the other connecting face F ' _L protruding from the edge of the electrically controllable device (of the support) on at least one side defining another protruding zone Z'D facing another zone Z'A of one of the main faces of the assembly sheet, the other protruding zone Z'D is in adhesive contact or glued with the zone Z'A preferably Z'A is at most 10cm or 5cm or 1 cm from the edge of the support -et even protruding on two sides preferably opposite, on three sides, around the periphery of the functional zone etc-, in particular with another protruding zone ZΈ facing a zone ZB of one of the main faces of the assembly sheet, by example Z'D and ZΈ protruding from two opposite sides of the support, preferably Z'A and Z'B are at most 10cm or 5cm or 1 cm from the edge of the support

placing said preassembled element between the first and second glazings before, after or simultaneously placing the laminating interlayer between the first and second glazings;

and the lamination step, with said preassembled element, comprising evacuation, or even pressurization, and heating, the lamination step leading to

- The adhesive contact (direct or indirect) of the free face F _L (bare) with the contact face, in particular bare or coated (giving full surface adhesive contact of the free face F _L with the contact face) and / or of the free face F'L (bare) with the particularly bare or coated bonding face (giving full-surface adhesive contact of the other free face F _L with the bonding face)

and in particular the adhesive contacting of the lamination interlayer, in particular of the assembly sheet (where appropriate), with the faces F2 and F3 (in a distinct zone notably adjacent to the zone with the electrically controllable device).

The double-sided adhesive tape used in the prior art laminated roof requires the removal of a protective film ('liner') and the surface is tacky before positioning and therefore does not allow easy readjustment of the support. if necessary. In addition liner residues can lead to bubbling or blur.

According to the invention to simplify and accelerate the manufacture of the glazing is used a preassembled element by gluing or adhesive contact offline lamination. The plastic strip is therefore already linked (full surface or punctually) with the device and / or with the assembly sheet. In the latter case, the strip is protruding (larger than the device), the link between the strip and the sheet can serve alone to maintain the device and there is no need for additional connection back and plastic strip.

The plastic strip is able to bond with the face of the glazing by the lamination. Unlike the double-sided adhesive tape, the free face of the thermoplastic strip is non-sticky and ready for use. The plastic strip according to the invention allows precise positioning without loss of time online.

The manufacturing process is thus optimized and more compatible with automation.

The (thermo) plastic strip also allows degassing (escape of microbubbles coming from the degassing cycle in an oven), the vacuum serving to evacuate the bubbles being present before reaching the temperature necessary for the adhesion of the plastic (preferably thermoplastic) of the strip on the contact face. The (thermo) plastic strip can thus be more transparent than the double-sided tape.

The thermoplastic strip can also provide better mechanical strength especially when the support is large.

The other plastic strip provides the same advantages as those mentioned above for the plastic strip.

It is possible to combine a plastic strip and other plastic strip, preferably one of which is protruding on the lamination interlayer, which is preferably in one single sheet (PVB, composite, PVB / functional PET / PVB) possibly perforated.

The other plastic strip can be perforated to the right of discrete electronic components (opto).

The plastic strip according to the invention is called in the text back plastic strip because of its connection with the rear face.

The other plastic strip according to the invention is referred to in the text plastic strip before because of its position on the front side. When the contact face is bare facing the connecting element, the connecting element (and therefore the plastic strip) is in direct adhesive contact with the contact face.

When the contact face is coated with a layer (mono or multilayer) particularly functional (masking layer, electroconductive, low emissivity, heating, etc.) opposite the connecting element, the connecting element (thus the strip plastic) is in indirect adhesive contact with the contact face. A mineral layer is preferred. Preferably it is a deposited layer for example obtained liquid (screen printing, printing, etc.), physical vapor deposition (cathodic sputtering) or even chemical.

In particular there is preferably no lamination interlayer (PVB etc.) between the free main face F 'and the contact face. A particular case is the insertion of another device between the free main face F 'and the contact face which can itself be preassembled, or housed in, covered by a lamination interlayer.

When the bonding face is bare opposite the other connecting element, the other connecting element (and therefore the other plastic strip) is in direct adhesive contact with the bonding face.

When the bonding face is coated with a layer (mono or multilayer) including functional (masking layer, electroconductive, low emissivity, heating, etc.) opposite the other connecting element, the other connecting element (so the other plastic strip) is in indirect adhesive contact with the bonding face. A mineral layer is preferred. Preferably it is a deposited layer for example obtained by liquid (screen printing, printing, etc.), physical vapor deposition (cathode sputtering) or even chemical.

In particular, there is no preference for lamination interlayer (PVB etc.) between the free main face F "and the bonding face. A particular case is the insertion of another device between the free main face F "and the bonding face which can itself be preassembled or housed in; covered by a lamination interlayer.

It is possible to adapt the shape of the plastic strip (or the other plastic strip, respectively), use for simplicity a strip of rectangular, square, L or F or E shape, in comb, in particular of the shape similar to the support. ..

After placement of the preassembled element and the lamination interlayer (in particular the assembly sheet), it is conceivable to put the preassembled element in point contact with the contact face and / or the interlayer lamination (including if necessary the assembly sheet) with the contact face to maintain it before the vacuum.

The electrically controllable device (local) can partially cover the laminated glazing for example at most 50% or 40% or 30% or even at most 20% or 10). And also the (thermo) plastic (local) tape can partially cover the laminated glazing (eg at most 50% or 40% or 30% or even at most 20% or 10%.) The tape coverage rate can be preferably the same or a little higher than that of the electrically controllable device. The lamination interlayer (the assembly sheet, etc.) is of a surface (well) greater than this plastic strip (front or rear), and can cover at least 70%, 80% or 90% or 95% of the glazing. electrically controllable device. The lamination interlayer (the assembly sheet, etc.) may be set back from the edge of the first glazing unit (and / or second glazing) in particular of at most 2 mm. When the support (and the strip) does not protrude from the first or second glazing, it is preferred that the lamination interlayer surround the support (so that the interlayer is present between the support and the edge of the nearest laminated glazing).

Thus, a thin plastic band (front or rear) with a lower surface area than the interlayer (with the assembly sheet) is preferred for cost optimization and even for better handling during manufacture, given its thinness.

The (thermo) plastic strip (front or rear) may protrude from the edge of the support in the laminated glazing area with the lamination interlayer, preferably at most 20 cm, 10 cm or 5 cm and even 1 cm from the edge of the support to facilitate the installation (without folds etc) especially if the preassembly intervenes between rear face and plastic band (back).

In the present invention the expression "at most X, Y or Z" means at most X, (even) at most Y and (even more) at most Z.

According to one configuration, the plastic strip (rear) is transparent (and without defects) and / or the other plastic strip (front) is transparent, the support is transparent (the electrically controllable system is optionally transparent or at least leaving an overall transparency) , the placement of said preassembled element between the first and second glazings is in a transparent zone of the first and / or second glazing (face F2 and / or F3 bare or coated with transparent layer), the transparent strip (rear) covering the rear face at minus opposite side to said functional area and / or the other plastic band (front) is transparent covering said functional area.

In one configuration, the method comprises, forming said preassembled element according to at least one of the following configurations (a) or b) or a) + b)): a) assembling the connecting element (rear plastic strip) with the support, the connecting face F _L being placed in adhesive contact or bonded with the rear face, bonding face F _L is brought into full-surface or spot adhesive contact with the punctual rear face by a network of spaced apart spot adhesive contacts / or is bonded with the rear face, for example in the open surface or punctually via a network of spaced apart ad hoc adhesive zones or else via an adhesive frame (bead of adhesive or double-sided adhesive tape, in particular with a thickness of at most 100 μm) by example peripheral -forming a seal- or by adhesive strips (bead of glue or double-sided adhesive tape) for example two peripheral strips a) assembly of the other connecting element (front plastic strip), the other side of link F ' _L being placed in adhesive contact or glued on the electrically controllable device (and / or the front face), the other connecting face F' _L is placed in contact adhesive in full surface or spot by a network of ad hoc adhesive contacts spaced or is glued in full surface or punctually via a network of spaced apart ad hoc adhesive areas or via an adhesive frame (bead of adhesive or double-sided adhesive tape including a thickness of at most 100pm) for example device -forming a seal - or by adhesive strips (glue bead or double-sided tape) for example two peripheral strips b) and / or assembly of the connecting element (rear plastic strip) with the In the case of a laminating laminar, the protruding zone ZD is brought into contact spot adhesive or full surface with zone ZA by means of a network of spaced apart spot adhesive contacts or the bonding face is bonded in particular via a network of ad hoc or full adhesive zones facing the zone. ZA

b ') assembling the other connecting element (front plastic strip) with the laminating interlayer the other protruding zone Z'D is brought into contact spot adhesive or full surface with the zone Z'A by a network of contacts spaced apart spot adhesives or the other bonding face is bonded via a network of spot or full-face adhesive zones to zone Z'A.

All combinations are provided in particular a) + b); a ') + b'); a) + b ') a') + b); a) + a '); b) + b '); a) + a ') + b) + b'). This time we can use a double-sided tape because the operation is offline lamination.

The adhesive contact, which does not involve the addition of adhesive material, is preferably by softening the plastic strip (rear) and / or the other plastic strip (front), preferably thermoplastic, which leads to the adhesive contact. between faces.

Particularly advantageously, the adhesive contact is by heating and possibly also by pressure, in particular induction heating, hot air, radiation (laser) or using a solution such as alcohol.

Particularly advantageously, the adhesive contact is point and local heating and possibly also by pressure, including induction heating, hot air, radiation (laser) or using a solution such as alcohol. Each point adhesive contact is for example of width of at most 15mm.

Each ad hoc adhesive bonding is for example of a width of at most 15 mm.

As a heating tool, especially local or multi local (and better pressure) can be used a metal pen, a "soldering iron", with a flat tip (and preferably with an anti-adhesive film (silicone, Teflon, PTFE, elastomer etc) able to pass the heat, one or more heated fingers, a heat gun.

The point adhesive contacting may be in one operation for all the contacts. You can choose a heating tool that allows you to perform the various spot adhesive spots in one operation.

The local heating can make it possible not only to form local adhesive contact between the plastic strip (rear) and the rear side support but also between the device and a sheet of the interlayer.

The local heating may be by application of a heating tool on the back side and / or on the front side. We prefer the back side.

During said preassembly with the connecting element or with said other connecting element, the electrically controllable device (the rear face or the front surface respectively) is for example on a first sheet of the lamination interlayer, face of the first sheet which is opposite side to said connecting element or to said other connecting element, and a second sheet of the lamination interlayer (in particular the assembly sheet) is on the first sheet, the local heating leads to a one-off contacting of the first sheet with the second slip.

During said preassembly with the connecting element, the front surface of the electrically controllable device is on a first sheet of the lamination interlayer, in particular the assembly sheet, the local heating leads to a point contacting of the front surface of the electrically controllable device with said first sheet of the lamination interlayer.

In one configuration, the (thermo) plastic strip and said lamination interlayer are in contact or spaced before the lamination for example of at most 5 mm or 1 mm, and after lamination (by creep) the (thermo) plastic strip and said interlayer lamination, are in continuous contact, without leaving a gap between the rear face and contact face and / or the other plastic strip and said interlayer lamination are spaced before the lamination and after lamination the other plastic strip and said interlayer lamination are in continuous contact, leaving no space between the front surface of the device and the bonding face.

Preferably, the strip is thermoplastic, is based on polyvinyl butyral

(PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and more preferably less than 5% by weight and in particular without plasticizer and in particular of thickness e3 of at most 0.15 mm, in particular from 25 to 100 μm, 40 to 70 μm and even at most 50 μm. And laminating interlayer G is based on poly (vinyl butyral) (PVB) - with plasticizer, in particular with more than 15% by weight of plasticizers, conventional - and in particular with a thickness of at least 0.3 mm and even with at least 0.6 mm and / or the other band is thermoplastic, based on polyvinyl butyral (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and even more preferably less than 5% by weight. % by weight and in particular without plasticizer, and said lamination interlayer is preferably based on polyvinyl butyral (PVB) especially with more than 15% by weight of plasticizers.

Preferably, the support is flexible, plastic, preferably is transparent preferably polyester, especially poly (ethylene terephthalate) or polyimide, in particular with a thickness of 25 to 150pm and even 50 to 100pm. More generally, the support may be made of plastics material (in particular thermoplastic, polyethylene terephthalate PET, polyethylene naphthalate PEN, polyethylene PE, poly (methyl methacrylate) PMMA, polydimethylsiloxane PDMS, polyamide, polyimide, polycrylate, polyester, polycarbonate, polysulfones, polyethersulfones, thermoplastic polyurethane.

If one or local cuts are made in the support, the thermoplastic strip (the other thermoplastic strip) can be integrated / whole or with the local cuts.

The electrically controllable device glazing may comprise another or more electrically controllable devices spaced apart, each with a plastic strip (respectively another plastic strip) or with a common plastic strip (respectively another plastic strip) for example along the part or all of the edge of the laminated glazing.

When the support has an L-shape, bent, etc., one can adapt accordingly the shape of the plastic strip (respectively of the other plastic strip) or alternatively use for simplicity a rectangular, square-shaped strip. For example, in this configuration with a rectangular strip and a first support in L or F or E comb, the plastic strip (respectively of the other plastic strip) can protrude substantially from the edge of the first support towards the edge of the first nearest glazing.

The support can be sufficiently flexible (flexible) to adapt to the curvatures of the curved laminated glazing. The support can be associated with a flat connector extending to the edge of the glazing and even beyond it. Preferably a flexible connector adapted to the curvatures of the glazing, comprising a plastic for example PEN, polyimide. The flat connector may be of width (dimension along the edge) less than or equal to the dimension of the support (of diodes) especially along the edge.

The support (flexible) may be local, for example covering less than 10% of the surface of the laminated glazing, in particular in a peripheral region of the laminated glazing (windshield).

After the lamination, the preferably flexible support may comprise an external electrical supply portion extending up to the edge of the laminated glazing unit and protruding from the edge of the glazing unit and even folded over the face F4 (or F1) or the another plastic strip protrudes from the edge of one of the first and second glazings and is folded over the face F4 (or F1).

Also, before the lamination the (thermo) plastic strip (front or rear) may protrude from the edge of one of the first and second windows and is folded on the face F4 or F1 by prefixing with an adhesive tape to the face F4 or F1 and removed after lamination.

In one embodiment, before the placement of said preassembled element with the other connecting element, the lamination interlayer comprises a so-called back sheet, which is possibly said assembly sheet, with a main face F'x against the rear face of the support, and the main face F'x optionally comprising said Z'A zone, the other plastic strip called the front plastic strip is against the front face, and on the controllable system which comprises a set of discrete and thin components of preferably with é2 <0,15mm, front plastic band possibly having through-holes in the right of the discrete components and after the lamination, the backsheet is in adhesive contact with the rear face, the faces F2 and F3 (out of device zone) and preferably in contact with the other plastic strip (front band). In another embodiment, prior to the placement of said preassembled element with the connecting element and possibly the other connecting element (before or after the pre-assembly), the lamination interlayer comprises a so-called front sheet (tinted, wedge , acoustic multilayer, son, composite PVB / PET / PVB), which is possibly said assembly sheet, with a main face Fx placed against the front surface of the electrically controllable device, in particular the front face of the support (especially with a system discrete as an electronic component (opto), and the main face Fx possibly including said zone ZA. After lamination, the front leaflet (Particularly unique) (the face Fx) is in adhesive contact with the front surface of the device, in particular the front face of the bare or coated support, with electrical circuit, etc.).

When the lamination interlayer comprises a single sheet, the front sheet may be in adhesive contact with (the majority of) the other of the faces F2 or F3 and with (the majority of) the contact face.

When the lamination interlayer comprises a second face-side sheet Fx (in particular perforated sheet with a reserve for accommodating the device in particular), the second sheet (perforated) may be in adhesive contact with (the majority of) the contact face and the front slip may be in adhesive contact with (the majority of) the other faces F2 or F3. The front sheet may have a blind reserve in the area of the electrically controllable device extending the reserve of the second sheet (perforated).

When the electrically controllable system is too thick but discrete (punctual) it is possible to practice in the front sheet a hole dedicated to the electrically controllable system for example as already described for the diodes in the aforementioned prior art or more widely for other electrically controllable systems (electronic (opto) components etc.)

Also, in a first configuration, the main face Fx of the front sheet has at least one blind hole or through W1 width of at most 20mm, 15mm, 10mm, 5mm, 2mm and even length of at most 10mm ,, 5mm , 2mm housing the so-called discrete electro-controllable system, in particular an electronic (opto) component - such as a photodiode or an inorganic diode - with e2> 0,15mm (requiring the cutting of the interlayer) and in particular submillimetric even of 'at most 0.5mm, width W'2 not more than 20mm, 10mm, 5mm, 2mm and even not more than 10mm, 5mm, 2mm, and e2 <0.15mm and e3 <0.15mm.

The front sheet is in adhesive contact with the front face of the support. In particular, the hole is wider than the surface of the electrically controllable system (electronic (opto) component), preferably wider than at most 0.5 mm or even at most 0.1 mm. Possibly the hole is through and the other plastic band between the bonding face and the front sheet covers each component in a through hole.

Naturally, the main face Fx of the front sheet may comprise as many holes as components on the support or even holes common to several adjacent components on the support.

The other plastic strip or front plastic strip (front surface) may be between the perforated sheet (through hole) and the contact face for example for a protection of the front surface of or preferably of the components (optoelectronic) the sheet may extend beyond the edge of the support.

In one embodiment with the other plastic strip (front plastic strip) alone, the sheet of the insert is back side in adhesive contact with the back side. The other plastic strip (front plastic strip) is on the front and on the components or has holes in the right of the components to limit the number of interfaces.

The use of a thin plastic strip brings the components closer to the glazing (sensors etc) and this can improve performance.

When the electrically controllable system is too thick but surface (quite extensive) it is preferably housed in a blind or through hole in a lamination interlayer sheet. Also, in a second configuration, before the placement of said preassembled element (before or after the pre-assembly) with said connecting element and / or the other connecting element, the laminating interlayer comprises a perforated sheet (single sheet, composite sheet etc. ) thus comprising a saving (blind or through) housing all or part of the electrically controllable system and the support, (all or part between the glazing, at least the functional area, and all or part of the power supply area between the glazings, preferably separate from a notch ie from an emergent peripheral saving) and even preferably surrounding all or part of the wafer of the device, the perforated leaflet having the main face Fx which is free and possibly comprising said zone ZA (oriented towards the contact face after placement) or F'x (facing towards the bonding face after placement) and possibly including zone Z'A, the band e (thermo) plastic is next to savings, with a difference in height H1 between the face Fx and the free face of the plastic strip of at most 0.3mm, 0.2mm, 0.15mm and / or l Another plastic strip is next to the savings, with a height difference HΊ between the face F'x and the free face F ' _L of the other plastic strip of at most 0.3mm.

In particular, the free face of the plastic strip being flush with the face of at most 0.3mm, 0.2mm, 0.15mm, flush with the Fx or emerging fax (in excess thickness) of at most 0.3mm, 0, 2mm, 0.15mm.

In particular, the free face of the other plastic strip being flush with the face of at most 0.3mm, 0.2mm, 0.15mm, flush with the Fx fax or emergent (with extra thickness) of at most 0.3mm, 0.2mm, 0.15mm.

In particular, before the lamination with the preassembled element comprising the connecting element and / or the other connecting element, the electrically controllable device emerges from the perforated leaflet (the rear face of the support or the front surface) the electrically controllable device and the main face Fx are spaced from a non-zero height H2 greater than e2 (and smaller than e2 + e'2), H2 being equal to at most 0.3mm, 0.2mm, 0.15mm, and the rear face emerging from the perforated leaflet. The method comprises the positioning of an additional thermoplastic plastic strip (and even plastic identical to said plastic strip on the rear face) forming a frame on all or part of the edge of the support of thickness Ex of at most 0, 15mm and less than or equal to H2, and against the edge of the support or spaced at most 1/0, 5mm, and is opposite an area of the perforated sheet.

The additional plastic strip has a free main face F ", opposite to a connecting face FC, optionally the additional plastic strip comprises a single band or a plurality of plastic strips in staircase and Ex is then the total thickness of the plastic strips

And by the lamination step, said free face of the other plastic strip is brought into adhesive contact with the contact face.

In particular, the bonding face FC may be in adhesive contact with the perforated sheet before the placing of said preassembled element between the first and second glazings, adhesive contact by the aforementioned tools for pre-assembly (softening, local heating, etc.). The hole or reserve is for example one-eyed in the first or second PVB.

In a configuration for example automobile or building window or door furniture (equipment etc), the first glazing is external glazing, the first face is often called F1 face, the second face is often called face F2, and the second glazing is the external glazing the third face is often called F3 face, the fourth face is often called F4 face.

In an alternative configuration for example automobile or building window or door furniture (equipment etc), the first glazing is external glazing, the first face is often called F4 face, the second face is often called F3 face, and the second face is glazing is the internal glazing the third face is often called F2 face, the fourth face is often called F4 face.

In a configuration:

the first and the second windows are made of mineral glass,

the first glazing is in mineral glass and the second glazing is in plastic for example thinner (film), etc., for example in PC, PMMA, PET,

the second glazing is made of mineral glass and the first glazing is of plastic for example thinner (film) etc., for example in PC, PMMA, PET. The laminated glazing with electrically controllable device according to the invention may be part of a double glazing (glazing on the outside of the building or glazing on the inside of the building) or even triple glazing.

For the building the laminated glazing can form or be part of a partition, an equipment door of a window, a roof.

The invention also relates to an electrically controllable device glazing, especially obtained according to the manufacturing method as described above, comprising a laminated glazing unit comprising:

a first glazing element, transparent, in particular made of mineral or plastic glass, in particular curved, possibly clear, extraclear or tinted in particular gray or green, preferably curved, often forming external glazing, with first and second main faces respectively said face F1; and face F2, in particular F1 or F2 being each naked or coated with a layer (transparent or opaque), in particular mineral (functional layer, monolayer or multilayer etc. in particular layer with a thickness of at most 50 μm or even submicron) of preferably thickness for automotive glazing of not more than 2.5mm, not more than 2.2mm - in particular 1, 9mm, 1, 8mm, 1, 6mm and 1, 4mm- or even not more than 1, 3mm or not more than 1 mm

a second glazing, transparent, in particular of mineral glass and preferably clear or extraclear or even tinted or plastic, in particular curved, often forming an interior glazing with third and fourth main faces respectively said face F3 and face F4, in particular F3 or F4 each being bare or coated with a layer (functional layer, monolayer or multilayer etc., in particular a layer with a thickness of at most 50 μm or even submicron), thickness glazing for an automotive glazing preferably lower than that of the first glazing, even not more than 2.2mm - in particular 1, 9mm, 1, 8mm, 1, 6mm and 1, 4mm- or not more than 1, 3mm or more than 1 mm, the total thickness of the first and second glazing preferably being less than 4mm, even at 3.7mm

preferably at least one of the first or second glazings being made of mineral glass, in particular F1 or F2 or F3, F4 each being bare or coated with a particularly mineral layer (functional layer, mono or multilayer etc., in particular thickness of not more than 50 pm or even submicron)

a lamination interlayer of thermoplastic polymeric material, in particular in one or more sheets, in particular having a main face FA in adhesive contact with the second face F2 and a main face FB in adhesive contact with the face F3, and in particular a thickness e1 which is subcentiometric, preferably the majority of the face F2 and the face F3 is in adhesive contact with the lamination interlayer, for a car glazing preferably e1 at most 1, 8mm, better not more than 1, 2mm and even at most 0 , 9mm (and better still of at least 0.3mm and even at least 0.5mm), in particular recessed from the edge of the first glazing of at most 2mm and set back from the edge of a second glazing of not more than 2mm

preferably at least one of the first or second glazings being of mineral glass and the laminated glazing comprising between the faces F2 and F3:

an electrically controllable device, in particular a strip (elongate, for example square, rectangular, L-shaped, T-shaped, combed, etc.), comprising a support, in particular a strip (elongate, for example square, rectangular, L-shaped, T-shaped, comb, etc.), in particular of width W2 of at most 1 m or at most 40 cm and even at most 20 cm, 10 cm or 5 cm, of thickness e 2 in particular submillimetric and even at most 0.15 mm, with a front face, a rear face and a wafer, the front face being a carrier in a so-called functional zone of an electrically controllable system of thickness e2, preferably submillimetric, in particular with a width W'2 in particular of at most 5 cm or subcentiometric (discrete component etc) or substantially equal to W2 (surface system), and the front face possibly comprising a power supply zone adjacent to the functional area including opening or with an extension beyond the singing of the first or second glazing, the electrically controllable device being of lower surface to the lamination interlayer, -the device is therefore in a region (including peripheral) of the glazing

on the back side, a polymeric connecting element which is a plastic strip having a thickness e3 of at most 0.3 mm, 0.25 mm and even at most 0.15 mm, in particular from 25 to 100 μm, 70pm and even at most 50pm in adhesive contact with the rear face and with one of the faces F2 or F3 then called contact face, the connecting element being of lower surface to the lamination interlayer, in particular width W3 of at least 0.8W2 or 0.9W2 and / or not more than 1m or not more than 40cm and not more than 20cm, 10cm or 5cm, the bonding element being less than 1 lamination interlayer

and / or on the front surface, another polymeric bonding element which is another plastic strip of thickness e3 of at most 0.3 mm, 0.25 mm and even at most 0.15 mm, in particular of 25 to 100pm, 40 to 70pm and even at most 50pm in adhesive contact with the front surface and with one of the faces F2 or F3 then called bonding surface, in particular W'3 width of at least 0 , 8W2 or 0.9W2 and / or not more than 1m or not more than 40cm and not more than 20cm, the other connecting element being of lower surface than the lamination interlayer.

Preferably one or more of the following features are provided:

the plastic strip is thermoplastic, based on polyvinyl butyral (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and more preferably less than 10% by weight and in particular without plasticizer, and said laminating interlayer is based on polyvinyl butyral (PVB) in particular containing more than 15% by weight of plasticizers

and / or the other plastic strip is thermoplastic, based or poly (vinyl butyral) (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and more preferably less than 10% by weight and in particular without plasticizer, and said lamination interlayer is based on polyvinyl butyral (PVB) in particular containing more than 15% by weight of plasticizers

the transparent (thermo) plastic strip has a blur of less than 5% and without bubble-type defects (size of less than 0.1 mm) has a TL of at least 70%, 80%, 90%, transparent support assembly and thermoplastic strip has a TL of at least 70% and has a blur of less than 5% and / or the other transparent (thermo) plastic strip has a blur of less than 5% and free from defects in bubble type (size less than 0.1 mm) has a TL of at least 70%, 80%, 90%, the transparent support assembly and thermoplastic strip has a TL of at least 70% and has a blur of less than 5%.

said plastic strip protrudes from the rear face (at most 10 cm) on at least one side, and even two sides, is in adhesive contact with the lamination interlayer and / or said other plastic strip protrudes from the front surface (not more than 10 cm) on at least one side and even two sides and is in adhesive contact with the lamination interlayer

the lamination interlayer is made of polyvinyl butyral (PVB), in particular PVB with a hole or reserve comprising the electrically controllable device, optionally

acoustically, in particular for a windshield or a roof of a vehicle and / or a corner, in particular for a windshield,

- Possibly with metal wires (heating etc.)

or still forming a PVB / functional plastic film or first PVB / functional plastic film / second PVB composite element, the functional plastic film, preferably transparent, such as a polyester, a PET, carrying a functional electroconductive layer, in particular PVB with a hole or blind reserve in the first PVB.

The electrically controllable system may be chosen in particular from: a capacitive or inductive control switch, an antenna

one or more electronic (opto) components (mounted on the surface of the front face of said support), in particular discrete, in particular of width W2 <20 mm, in particular a sensor, a camera, a photodiode, an inorganic light-emitting diode, of which microled

And

I) the plastic strip and the lamination interlayer are in adhesive contact with the front face of the support, in particular the lamination interlayer houses the electronic (opto) component (s) with in particular e2> 0.15mm and e2 <0 , 15mm and even e3 <015mm, in a blind or through opening preferably a dedicated aperture by optoelectronic component, the possible other connecting element is between the interlayer and the bonding surface and covers the opening or openings

- or m) the other plastic strip is alone on the device, without the plastic strip, possibly perforated to the right of the (opto) electronic components with particular é2 <0,15mm and e2 <0,15mm and even e3 <015mm and e3 greater than or equal to e2, in particular one hole per electronic component (opto), and the lamination interlayer (PVB preferably) is in adhesive contact with the rear face.

The sensor in the laminated glazing in particular W'2 width of at most 10mm and / or thickness of at most 2mm or 1 mm and is chosen for example from at least one of the following sensors:

a rain detector (preferably in the windscreen wiper zone) typically of size from 100 mm ² to 600 mm ²

- a camera in the visible (anti-collision detector, object or person detector in motion or not), or infrared (night vision, anti-collision detector object detector or person moving or not, by example trapezoidal shape, and even several cameras of the same type for a stereoscopic vision, including CCD (charge coupled device) type of vision sensor and CMOAS (Complementary Metal Oxide Semi conductor in English)

one or more (typically 6) light sensors, such as a photodiode, typically of size 1, ² x 1, 4 mm ² to 1, 4 x 1, 8 mm ² or even of thickness e 2 of at most 0.7 mm and even 0.7mm and / or width W'2 of at most 2mm, for example type APDS-9005 of the company AVAGO TECHNOLOGIES

a thermometer, thermocouple typically a wire of thickness 0.5mm or less

an alarm sensor (detection of a glazing integrity defect, etc.), typically of conductive wire size of 12 to 150 μm in diameter, or by an electroconductive layer (opposite F2 or F3) a fog detector and linked to a heating element (resistive, etc.), such as an anti-fog, anti-condensation, anti-freeze, typically of 100-200 cm ^2, for example integrated in a rain detector;

an antenna-forming sensor, for example a conductor wire with a thickness of typically 12 μm to 0.5 mm, for receiving and / or transmitting electromagnetic waves (radio, TV, in particular a local communication network such as BLUETOOTH, WIFI, WLAN) , in particular within the lamination or embedded in a polymeric material (film, etc.)

an acoustic sensor (based on a piezoelectric element)

an ultrasonic signal detector preferably on the face F2, (for example based on a piezoelectric element)

a diagnostic sensor (defects of the laminated vehicle glazing, in particular windscreen or side glazing) based on an electroconductive layer (full surface)

- a control detector (wiper, etc.), for example IR control or voice control (piezoelectric).

The electrically controllable system may be surface-shaped, in particular with a width W2 of at least 20 mm and even 50 mm, and may especially be chosen from

a surface light system, such as an organic electroluminescent system OLED (which can form a pictogram, etc.), a TFEL (thin-film electroluminescent element), or a quantum dot electroluminescent diode called QLED,

a dynamic display system (screen) -in any technology, for example AM-OLED-,

a liquid crystal system (variable diffusion), in particular a PDLC (high band of a windshield, office partition, etc.), an optical valve, an electrochromic system, and in particular the lamination interlayer accommodates the device (via a stockpile)

And or :

i) said plastic strip is on the electrically controllable device without the other plastic strip, in particular said plastic strip projecting and in adhesive contact with the lamination interlayer and is preferably in adhesive contact with the front surface of the support

or j) the other plastic strip is on the electrically controllable device without the plastic strip, in particular the other plastic strip protruding in adhesive contact with the lamination interlayer and the lamination interlayer is in adhesive contact with the rear face of the support , or k) said plastic strip is on the electrically controllable device in particular protruding and in adhesive contact with the lamination interlayer and the other plastic strip is on the electrically controllable device in particular protruding in adhesive contact with the lamination interlayer (a sheet).

As AMOLED screen can be referred to those described in the patents

WO2017 / 1 15040, WO2017 / 1 15041 WO2017 / 1 15042 WO2017 / 1 15043.

As OLED forming pictogram or backlight a pictogram (enamel etc.) can be referred to those described in WO2017103425 and WO2017103426.

As liquid crystal system for example partition of a habitat can be referred to those described in WO201 1/161391 and WO2012 / 045973.

As a liquid crystal system, for example a sun protection strip in a windshield or as an optical valve system (SPD), reference can be made to those described in patents DE 102013001334 A1, DE 102005049081 B3, DE 102005007427 A1 DE 102007027296 A1 US- 2015-0331296).

As luminous touch switch can be referred to those described in patents WO2018 / 002707 or WO2018 / 002723.

On the front surface of the electrically controllable device selected light source (LED, OLED, TFEL, QLED etc) one can use a collimation optics (fresnel lens, prismatic film, crossed prismatic films, film with pattern network 2D) and preferably without the other plastic strip or interlayer of lamination between the collimation optics and the face of the glass in contact.

For the rear window the light source and collimation optics assembly may form a (third) stop lamp or a flashing (repeater), a clearance light, a position light.

For example (for the rear window or the windshield) the light source emits preferably in the red (auto) is particularly preferably rectangular and peripheral light strip and horizontal; For example (for the rear window or the windshield) the light source preferably emits in the yellow (auto) is especially a luminous band preferably rectangular and peripheral and horizontal, in particular horizontal at the bottom or side edge of the window.

Preferably for an electroluminescent system, the following preferably cumulative characteristics are preferred:

the electroluminescent system is an organic light-emitting diode called OLED in particular transparent (TOLED) or a quantum dot electroluminescent diode called QLED the electroluminescent system, in particular OLED or QLED, is transparent and has a light transmission of at least 20% and even at least 50%.

the electroluminescent system is an OLED which is rear-emission comprising the support (transparent or opaque or with an opaque layer) which bears on the front side in this order while moving away from the support: a possible functional sub-layer, a transparent anode, organic electroluminescent system, reflective cathode.

The OLED can also comprise an encapsulation layer covering the whole (the active surface): resin for example transparent or adhesive plastic film, this plastic film provided with electroconductive zones can be used for the electrical connection.

The electroluminescent system may be masked from the outside by a masking layer (enamel, etc.) opposite F1 or F2.

The lamination interlayer is for example formed from one or more sheets. One can choose a classical PVB as the RC41 of Solutia or Eastman.

The lamination interlayer may comprise at least one so-called central layer of viscoelastic plastic material with vibroacoustic damping properties, especially based on polyvinyl butyral (PVB) and plasticizer, and the interlayer, and further comprising two outer layers of PVB standard, the central layer being between the two outer layers. As an example of an acoustic sheet, patent EP0844075 can be cited. Acoustic PVB described in the patent applications WO2012 / 025685, WO2013 / 175101, especially stained as in WO2015079159.

The lamination interlayer may comprise an acoustic PVB and / or is (a tinted PVB). The lamination interlayer in particular is a PVB at least partially in its thickness. The tinted portion being at least (and even at most) between the electroluminescent element (OLED, QLED ..) is the F2 side.

The preferably internal glass in a laminated glazing unit, especially a thin glass panel with a thickness of less than 1.1 mm, is preferably chemically hardened. It is preferably clear Examples of applications WO2015 / 031594 or WO2015066201 may be cited.

In order to limit warming in the passenger compartment or to limit the use of air conditioning, the first glazing unit or at least one of the glazings (preferably the outer glass) is tinted. And the glazing, in particular laminated, may also comprise a reflective layer or absorber of solar radiation, preferably face F4 or face F2 or F3, in particular a transparent electrolyte oxide layer. conductive said TCO layer or even a stack of thin layers comprising at least one TCO layer, or thin film stacks comprising at least one layer of silver (in F2 or F3 preferably for a laminated glazing), the or each layer silver being disposed between dielectric layers.

One can cumulate layer (silver) face F2 and / or F3 and TCO layer F4 face. The TCO layer (of a transparent electro-conductive oxide) is preferably a fluorine-doped tin oxide layer (SnO ₂ : F) or a tin-indium mixed oxide (ITO) layer. .

Other layers are possible, among which thin layers based on mixed oxides of indium and zinc (called "IZO"), based on zinc oxide doped with gallium or aluminum, based on Niobium doped titanium oxide, based on cadmium or zinc stannate, based on antimony-doped tin oxide. In the case of aluminum doped zinc oxide, the doping level (i.e., the weight of aluminum oxide based on the total weight) is preferably less than 3%. In the case of gallium, the doping rate may be higher, typically in a range of 5 to 6%.

In the case of IΊTO, the atomic percentage of Sn is preferably in a range from 5 to 70%, especially from 10 to 60%. For the fluorine-doped tin oxide-based layers, the atomic percentage of fluorine is preferably at most 5%, usually 1 to 2%.

ITO is particularly preferred, especially with respect to SnO ₂ : F. Higher electrical conductivity, its thickness may be lower to achieve the same level of emissivity. Easily deposited by a cathodic sputtering method, especially assisted by magnetic field, called "magnetron process", these layers are distinguished by a lower roughness, and therefore a lower fouling.

One of the advantages of fluorine-doped tin oxide is its ease of deposition by chemical vapor deposition (CVD), which in contrast to the sputtering process, does not require any subsequent heat treatment, and can be implemented on the float flat glass production line.

By "emissivity" is meant the normal emissivity at 283 K according to EN12898. The thickness of the low-emissivity layer (TCO, etc.) is adjusted, depending on the nature of the layer, so as to obtain the desired emissivity, which depends on the desired thermal performance. The emissivity of the low-emissivity layer is, for example, less than or equal to 0.3, in particular to 0.25 or even 0.2. For ITO layers, the thickness will generally be at least 40 nm, or even at least 50 nm and even at least 70 nm, and often at most 150 nm or at most 200 nm. For fluorine-doped tin oxide layers, the thickness will generally be at least 120 nm, even at least 200 nm, and often at most 500 nm.

For example, the low-emissivity layer comprises the following sequence: high-index sub-layer / low-index sub-layer / an optional TCO-dielectric overcoat layer.

As a preferred example of a low-emissivity layer (protected during quenching, it is possible to choose high-index sub-layer (<40 nm) / low-index underlayer (<30 nm) / an ITO layer / high-index overcoat (5-15 nm) )) / overlay low index (<90 nm) barrier / last layer (<10 nm).

As low-emissivity layer, those described in the US2015 / 0146286 patent can be mentioned on the F4 side, in particular in Examples 1 to 3.

In a preferred embodiment:

the first and / or second glazing is tinted and / or the lamination interlayer is tinted on all of its thickness

and / or one of the faces F2 or F3 or F4 - preferably the face F4 - of the glazed roof, is coated with a low emissivity layer, in particular comprising a transparent electroconductive oxide layer (TCO) especially a thin layer stack with TCO layer or a stack of thin layers with silver layer (s)

and / or one of the faces F2 or F3 or F4, preferably the face F3, of the glazed roof, is coated with a solar control layer, in particular comprising a transparent electrically conductive oxide layer (TCO) in particular a thin layer stack with TCO layer or a stack of thin layers with silver layer (s)

and / or an additional film (polymeric, such as a tinted polyethylene terephthalate PET etc.) is between the faces F2 and F3 or (bonded) at F4 or even face F1.

In particular, the face F4 is coated with a transparent functional layer including low emissivity, preferably comprising a TCO layer, including a zone (electrically powered, therefore electrode) forming a touch button (for controlling the first light surface).

A transparent film (PET etc.) carrying a functional layer F2 side face (or F3 face alternatively), may form a capacitive touch switch, It may be the protective film. The invention of course relates to any vehicle including automotive comprising at least one glazing as described above.

A diode may be of the "chip on board" type or even more preferably a surface mounted component (SMD in English) then comprising a peripheral envelope (often referred to as "packaging").

The chip on board (SMD) may be devoid of optical element (above the chip-semiconductor (embedded or not in the material) to facilitate compactness.The envelope is for example epoxy. The polymeric envelope may eventually settle (the final thickness after lamination may be less than the initial thickness) during the lamination The envelope (polymer) may be opaque.

Inorganic diodes are for example based on gallium phosphide, gallium nitride, gallium and aluminum.

As diodes can be mentioned the range of OSLON BLACK FLAT sold by OSRAM. For the red light, there may be mentioned as a diode sold by OSRAM: OSLON BLACK FLAT Lx H9PP. For orange light (amber), there may be mentioned as a diode sold by OSRAM: LCY H9PP. For white light, the diode sold by OSRAM may be: LUW H9QP or KW HxL531.TE where x = is the number of chips in the diode (for example 4 or 5).

Flexible PCBs include the range of AKAFLEX® products (including PCL FW) from KREMPEL.

The present invention is now explained in more detail with reference to the appended figures in which:

Figure 1 is a front view of a laminated windshield of a motor vehicle on a road, windshield with internal light signaling by means of diodes and OLED in a first embodiment.

FIG. 1a is a front view of a laminated windshield of a motor vehicle on a road, windshield with internal light signaling by means of diodes and OLEDs in a variant of the first embodiment .

Figure T is a front view of a laminated windshield of a motor vehicle on a road, windshield with internal light signaling by means of diodes and OLED in a variant of the first embodiment.

Figure 1 "is a schematic front view of a laminated rear window with external light signaling in one embodiment of the invention.

Figure 2 is a schematic cross sectional view of an internal light laminated glazing unit in an embodiment of the invention. FIG. 2 is a diagrammatic cross-sectional view of a diode-based light-laminated glazing unit in an alternative embodiment of FIG. 2 with its collimation optics for the internal display. Figure 2a is a top view of the collimation optics. Figure 2b is an overview of the collimation optics.

FIG. 2bis is a diagrammatic cross-sectional view of a diode light-laminated glazing unit in an alternative embodiment of FIG.

FIG. 2 "shows a diode mounted on the surface of a diode support.

Figure 3 is a schematic cross-sectional view of a laminated glazing incorporating an electronic (opto) component in an embodiment of the invention.

Figure 4 is a perspective view of a LED light pane with the diode support.

Figure 5 is a front view showing a preassembly of the electrically controllable device using the lamination interlayer and by spot adhesive contact.

Figure 6 is a front view showing a preassembly of the electrically controllable device using the lamination interlayer and by spot adhesive contact.

Figure 7 is a front view showing a preassembly of the electrically controllable device with a plastic strip and by spot adhesive contact.

Figure 7a is a front view showing a preassembly of the electrically controllable device with a plastic strip and by spot adhesive contact.

Figure 7b is a front view showing a preassembly of the electrically controllable device with a plastic strip and by spot adhesive contact.

Figure 8 is a sectional view of the preassembly electrically controllable device and rear plastic strip and insert before placement between the glass sheets and lamination.

Figure 8 is a pre-assembly sectional view of the device and rear plastic strip and interlayer lamination before placement between the glass sheets and lamination.

FIG. 9a shows an F1 side view of a laminated glazing unit with an electrically controllable device, for example a surface element, such as an OLED for a light function (possibly forming a pictogram) or an OLED screen. Figure 9b shows this sectional glazing.

FIG. 9c shows an F1 side view of a laminated glazing unit with an electrically controllable device, for example a surface element, such as an OLED for a light function (possibly forming a pictogram) or an OLED screen. Figure 9d shows this sectional glazing.

Figure 10 is a sectional view of the pre-assembly electrically controllable device and plastic strip and insert before placement between the glass sheets and lamination to form the glazing of Figure 9d.

FIG. 10 is a sectional view in pre-assembly of an electrically controllable plastic interlayer device of FIG. 9d before placement between the glass sheets and the lamination.

The elements are not to scale, the figures are schematic.

Figure 1 shows (from the vision of the interior of the vehicle) a windshield 1000 of a motor vehicle driving on a three-lane road with a car in front.

The windshield is a laminated glazing unit with internal light signaling and comprising:

a first set of six diodes 4 on the front face 30 of a first printed circuit board known as a PCB 3 integrated between the external glazing unit and the internal glazing unit 1 'of the laminated glazing unit, one-row diodes arranged in the window pane; in an edge region of the windshield along the lower longitudinal edge possibly in or near a masking peripheral zone (opaque enamel ..) of the outer glazing (masking not shown) or even alternatively in an area with a alternating masking zone (opaque layer, like an opaque enamel) and transparent zone (facing a diode) of the outer and / or inner glazing,

a second set of six diodes 4 on the front face 30 of a second printed circuit board 3 called PCB 3 integrated between the external glazing and the internal glazing 1 'of the laminated glazing, diodes in a row arranged in the light of window in an edge region of the windshield along the lateral edge (left), in particular on the driver's side, possibly in or near a peripheral masking zone (opaque enamel ...) of the outer glazing or even alternatively in a zone with alternating masking zone (opaque layer, like an opaque enamel) and transparent zone (opposite a diode) of the outer and / or inner glazing. a third set of six diodes 4 on the front face 30 of a third printed circuit board called PCB 3 integrated between the external glazing unit and the internal glazing unit 1 'of the laminated glazing unit, one-row diodes arranged in the window pane in an edge zone of the windshield along the right lateral edge, in particular on the passenger side, possibly in or near a peripheral masking zone (opaque enamel, etc.) of the outer glazing or even in an area with an alternating zone masking (opaque layer, like an opaque enamel) and transparent area (facing a diode) of the exterior and / or interior glazing

These diodes in particular of the first set can emit red light alerting the driver when the car before (or any other means of locomotion or an animal) is detected too close. When the front car is far enough away (respect of the safety distance), the diodes are off.

These diodes in particular the second set can emit red light alerting the driver when a car (or any other means of locomotion or an animal) is detected too close on the left side of the car. The signal light may also change from a color (eg orange or amber) when the vehicle at a risky distance to another color eg red when the vehicle at a shorter distance even more dangerous.

In these cases, as many diodes as necessary are provided, for example a row with an alternation of red diodes and orange diodes, or one row per color. One can also have at least three levels of signaling (three colors).

The vehicle integrates at least one sensor (preferably one per set of diodes) to detect these dangerous situations (non-compliance with the safety distance or other) and at least one control unit for driving the diodes.

The diodes are not necessarily in a row, in particular parallel to the edge of the glazing. The PCBs 3 with diodes 4 are for example in the lower quadrant driver side.

If necessary the windshield comprises a set of metal son, almost invisible, for example 50pm which are placed on one side for example face side F3 of the lamination interlayer (over the entire surface), shaped lines straight or not.

Being here in the clear glass is preferred PCB 3 transparent.

Each PCB 3 is glued with a transparent thermoplastic band (back) and thin e3 thickness of at most 0.15mm and better less than 100pm and identical in size to the PCB, tape bonded back side of the card ( oriented towards the face F2) and which is in full-surface adhesive contact with the face F2 called the contact face.

Before lamination, each PCB 3 and the so-called transparent thermoplastic strip forms a preassembled element. The manufacture of the preassembled element will be described in more detail later.

As a variant, the transparent and thin thermoplastic strip of thickness e3 of at most 0.15 mm and better at most 100 μm and of identical size to the PCB, is said before and bonded to the front face 30 of the card (oriented to the face F3) and which is in full surface adhesive contact with the face F3 called bonding face. The front band can then be drilled to the right of the diodes or other components (opto) electronic discrete, alternative (sensors, etc.) or in addition, for example ultrafine thickness e2 <0.15mm. Before laminating, the transparent thermoplastic front strip forms a preassembled element. The manufacture of the preassembled element will be described in more detail later.

The windshield further comprises two other electrically controllable surface-type devices here of rectangular shape 4 ', 4 "such as OLED screens for example in the middle and along the lower and upper longitudinal edges of the windshield. These screens are for example transparent and in the clear glass.

In one configuration, a thermoplastic transparent or non-so-called front and thin strip of thickness e3 of at most 0.15 mm and better at most 100 μm and of identical size to the OLED, is glued to the front surface of the screen OLED (electroluminescent system side) and which is in full surface adhesive contact with the face F3 called bonding face (bare or coated). Before lamination, the OLED screen and the transparent thermoplastic front strip forms a preassembled element. The manufacture of the preassembled element will be described in more detail later.

In a cumulative or alternative configuration, a thin and thin transparent thermoplastic strip with a thickness e3 of at most 0.15 mm and better at most 100 μm and of identical size to the OLED, is bonded to the surface of the OLED support (preferably flexible substrate including polyester, PET) and which is in full-surface adhesive contact with the face 12 F2 said contact face (bare or coated). Before laminating, the OLED screen and the transparent thermoplastic back band forms a preassembled element. The manufacture of the preassembled element will be described in more detail later. Before lamination, each device 4, 4 "and the transparent thermoplastic strip before and / or back and form a preassembled element. The manufacture of the preassembled element will be described in more detail later.

One can also provide in the laminated a light touch button or not to control the OLEDS screens or other devices etc. This capacitive switch, for example, may be pre-assembled with a front and / or rear plastic strip as mentioned above.

Alternatively, it is possible to similarly produce a luminous laminated roof with diodes and / or OLEDS, or QLEDS or TFEL, for example, providing a decorative ambient light, or a reading lamp oriented towards the face F4.

On the front surface can be used a collimation optics and preferably without front plastic strip or lamination interlayer between the collimating optics and the face of the glass in contact.

Figure 1a shows another windshield of a motor vehicle, windshield 1000 with light signaling in a variant of the first embodiment.

It differs from that of Figure 1 by the more peripheral location of the three PCBs 3, which can be opaque (opaque support and / or opaque conductive tracks). The face 12 F2 comprises a solid black enamel masking frame preferably and the F4 face 14 (or the face 13 F3) comprises a black enamel masking frame 72 preferably, with openings 70 at the right of the diodes 4.

In this embodiment, the front or rear thermoplastic joining strip 5 may be transparent (tinted, etc.) or opaque. This band 5 is in adhesive contact with the masking layer 71.

In addition, the OLED screen 4 'at the bottom of the windshield is in the enameling zone and there has been a saving 70 at the right of the screen 4'.

FIG. 1 'is a front view of a windshield of a motor vehicle on a road, windshield 1000' with internal or even external light signaling by means of diodes in a variant of the first embodiment .

It differs from that of Figure 1 by the location and type of signage.

The first set of diodes 4c, on a support type PCB 30C, forms a triangle with a possible central exclamation point. It therefore forms a danger signal. The second and third set of diodes 4a and 4b, each on their PCB type support 30a and 30b, form arrows indicating when the flasher (respectively left or right) is engaged.

These flashing repeaters can be visible from the outside (external signaling). It is possible to move the left flashing as far left as possible (if in zone of masking opposite F2 with saving to the right of the diodes) in or to split it and the flashing right as right as possible (if in zone of masking in face F2 with save the diodes or duplicate it.

Each PCB 30a, 30b, 30c is bonded with a thin thermoplastic strip of thickness e3 of at most 0.15mm and identical in size to the PCB, bonded strip on the rear side of the card (oriented towards the face F2) and which is in full surface adhesive contact with the face F2 called contact face.

Before lamination, each PCB 30a, 30b, 30c and the thermoplastic strip forms a preassembled element.

If in the clear glass are preferred PCBs 30a, 30b, 30c and transparent thermoplastic thin strips. It can be provided to move them in a similar manner to FIG. 1 bis in a peripheral masking frame.

In addition, the OLED screen 4 "in the upper and central peripheral position of the windshield is in the enameling zone 72 which is enlarged in the center and there has been a saving 70 to the right of the screen.

Figure 1 "is a schematic front view (face side F1 or face 12) of a rear window with external light signaling 100" in one embodiment of the invention.

In the central zone 13 ', a third brake light 101 is formed with, for example, six red diodes 4 on the PCB 3 along the upper longitudinal edge.

In each lateral zone 14 ', a flasher 102 is formed with, for example, six diodes 4 emitting in the yellow on the PCB 3 along the side edge in play, or a signaling light 103 with, for example, six diodes 4 on the PCB 3 along the lower longitudinal edge in play.

Each PCB is glued with a thin thermoplastic strip e3 thickness of at most 0.15mm and identical in size to the PCB, tape bonded on the back side of the card (facing F3) and which is in full surface adhesive contact with the face F3 called contact face.

Before lamination, each PCB 3 and the thermoplastic strip forms a preassembled element. If in the clear glass are preferred PCBs 3 and transparent thermoplastic thin strips. It can be provided to move them in a similar manner to FIG. 1 bis in a peripheral masking frame.

The bezel further comprises another electrically controllable surface-type device here of rectangular shape 4 ', such as an OLED for example in the middle and along the lower longitudinal edges of the windshield. The OLED is for example transparent and in the clear of glass.

In one configuration, a thin or transparent thermoplastic strip before and thin with a thickness e3 of at most 0.15 mm and better at most 100 μm and of identical size to the OLED, is bonded to the front surface of G OLED ( electroluminescent system side) and which is in full-surface adhesive contact with the face F3 called bonding face. Before laminating, G OLED and the transparent thermoplastic front band forms a preassembled element.

In a cumulative or alternative configuration, a thin and thin transparent thermoplastic band of thickness e3 of at most 0.15 mm and better at most 100 μm and of identical size to the OLED, and is bonded to the surface of the OLED support (preferably flexible substrate including polyester, PET) and which is in full-surface adhesive contact with the face F2 called contact face. Before lamination, the OLED and the transparent back thermoplastic strip form a preassembled element. Before lamination, the device 4, and the transparent thermoplastic band before and / or back and form a preassembled element.

Alternatively, it is possible to similarly produce a laminated glazing unit forming a lateral glazing (fixed or opening) with an external luminous signage such as a flashing repeater or else an advertising, informative or decorative display.

FIG. 2 is a schematic cross-sectional view of an internal light-signal windshield 100 in a first embodiment of the invention, comprising a curved laminated glazing unit, comprising:

a first glazing 1, for example TSA glass and 2.1 mm thick, forming outer glazing, preferably tinted, with first and second main faces January 1, respectively face F1 said - and face F2, and a slice 10

a lamination interlayer 2 made of polymeric material, preferably PVB, preferably clear, of submillimetric thickness e1, preferably between 0.2 mm and 1 m conventionally about 0.38 mm, for example a PVB sheet (RC41 Solutia or Eastman) of thickness about 0.76 mm or alternatively if necessary an acoustic PVB (tricouche or quadricouche) for example of thickness 0, Approximately 81 mm, of which face FB face F3 side is possibly carrying a set of metal son covering the surface (substantially) in particular opposite the diode or diodes

a second glazing 1 'forming internal glazing for example in TSA glass or clear or extraclair and 2.1 mm thick or even 1, 6mm or even less, with third and fourth main faces 13, 14 respectively said face F3 and face F4, the face F4 optionally coated with a functional layer (low emissivity, etc.),

the face F2 and the face F3 being the internal faces 12, 13 of the laminated glazing

a set of inorganic light-emitting diodes 4, which are surface-mounted components (SMD or SMD in English), for example emitting in the red on a support such as a printed circuit board called a PCB 3 with a wafer 34, PCB assembly + diodes being of total thickness and2 e1 e1 and better with e1-et2 of at most 0.5mm and preferably from 0.1 mm to 0.2mm, the diodes being of thickness e2 submillimeter often greater than 0.15 mm and the PCB 3 with a thickness e2 of at most 0.15 mm, for example from 50 to 100 μm, with a so-called front face 30 facing the face F3 and a rear face 30 'against the face F2 or face 12, each diode having a transmitting face emitting towards the inner glazing 1 ', and each diode having a wafer, For each of the diodes, the lamination interlayer has a region 21 comprises an opening therethrough surrounding the wafer of the diode and in contact with the slice. Before the lamination, through holes were made on the single PVB sheet slightly wider than the side of the diodes 4. During the creep lamination the PVB can come into contact with the diodes 4 without going between the front face and the face F3.

Alternatively a PVB is used with blind holes or even this sheet is retained with through holes and we add a back sheet (between F3 and the so-called hole sheet before) full surface (to insert other elements thicker to d ' other functionalities etc.) PVB or even PVB / PET functional / PVB. After lamination, the diodes are then in blind openings and preferably the front face is in contact with the bottom of the hole or spaced at most 0.2 mm or at most 0.1 mm. The diodes 4 (with a single semiconductor chip here) are square in width of the order of 5mm or less. A diode may be of the "chip on board" type or even more preferably a surface mounted component (SMD in English) then comprising a peripheral envelope (often referred to as "packaging").

Here, in the clear glass is chosen a PCB 3 the finest possible, flexible and preferably even the most discrete possible (minimum width or even transparency) for example comprising a transparent film such as PET, PEN or polyimide and even for the circuit board transparent connection tracks (rather than copper except to make them sufficiently thin). The PCB may protrude from the edge of the laminated glazing.

The lamination interlayer 2 is present between the face F3 and the front face of the PCB 3 on the entire front face of the PCB out of diodes, in the laminated glazing. The lamination interlayer 2 is absent from the rear face 30 '.

Before the lamination, the PCB 3 is bonded with a thin thermoplastic strip 5 having a thickness e3 of at most 0.15 mm, in particular 25 to 100 μm, 40 to 70 μm and even at most 50 μm, and of identical size to the PCB or protruding slightly as shown here of the wafer 34, the band whose front face 50 is glued to the rear face 30 'of the card (facing the face F3) and whose rear face 50' is in full surface adhesive contact with the face F2 12 called contact face.

Before lamination, each PCB 3 and the thermoplastic strip 5 form a preassembled element.

The thermoplastic strip is based on polyvinyl butyral (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and more preferably less than 5% by weight and in particular without plasticizer. The laminating interlayer is made of conventional polyvinyl butyral (PVB).

In particular one can choose as plasticizer-free PVB tape the product "MOWITAL LP BF" KURARAY company with the thickness e3 that is desired.

In a variant, for protection of the diodes, another plastic band of similar size, nature and thickness e3 is added between the face 13 F3 and the face 20 of the PVB.

As in FIG. 2, each diode is an electronic component including at least one semiconductor chip 41, and is equipped with a peripheral envelope 42 (often called "packaging"), polymeric or ceramic, encapsulating the wafer of the electronic component (and defining the slice of the diode), surrounding the semiconductor chip. The envelope may correspond to the maximum thickness (height) e2 of the diode. The envelope is for example epoxy. A polymeric envelope may eventually settle (the final thickness after lamination may be less than the initial thickness) during the lamination. The (polymeric) envelope may be opaque.

The envelope (monolithic or two-piece) may comprise a base portion 42 carrying the chip and a reflector portion flared away from the base higher than the chip, and containing a protective resin and / or material with color conversion function. The front surface 40 can be defined as the surface of this material covering the recessed chip or at the "front" surface of the reflector.

The diode may comprise a protective resin or a color conversion function material even just on the semiconductor chip. The semiconductor chip can be embedded in a material (resin, etc.).

FIG. 2 'is a diagrammatic cross-sectional view of a luminous laminated glazing unit with diodes in an alternative embodiment of FIG. 2 by the addition of a collimation optic 8 which is here a prismatic film 81 with its prisms joined end face 80 and with a rear face 80 'side diode front surface 4, housed in a hole 21 of the PVB, film held by tabs 82 on the front face of the support PCB 3. Figure 2a is a view of above the collimation optics which is here a prismatic film with its contiguous prisms 80 and a slice 85. Figure 2b is an overview of the prismatic film with its contiguous prisms 80.

Examples of collimation optics such as a Fresnel lens or a prismatic film are described in the application WO2017203171 (for example FIG. 3a and FIG. 2'a to 2'c). Examples of collimation optics such as two crossed prismatic films or a two-dimensional array are described in WO2017 / 203175 (for example, FIG. 2'a to 2'c and FIG. 1a to 1'z).

FIG. 2bis is a schematic cross-sectional view of a luminous laminated glazing unit 200a by diodes in an alternative embodiment of FIG. 2.

It differs in that the plastic strip 5 is on the masking enamel on the face F2 12 and savings 72 'to the right of the diodes are made in masking enamel 72 on the face F4 14. For example, the front face is glued by glue dots 6 'to the PVB before the lamination.

The invention has been described in relation to diodes but is suitable for other electrically controllable discrete devices such as sensors (photodiode, camera, etc.).

Figure 3 is a schematic cross-sectional view of a laminated glazing unit 300 incorporating an electronic (opto) component as a sensor in an embodiment of the invention.

The support 3 is here bonded to the contact face 13 which is the face F3 by a thermoplastic band such as a thin and transparent PVB as already described in the preceding figures.

In particular the support extends beyond the PVB following the wafer by a portion 51 and is folded by a portion 52 in the face F4 14 and the band 5 sticks to the edge and to the face F4. A connector 53 is connected to the end of the portion 52.

FIG. 4 is a schematic cross-sectional view of a luminous laminated glazing unit 400 by diodes in an alternative embodiment of FIG. 2.

It differs in that the support 3 is in L with a diode zone 31 and a power supply zone 32 with an extension 33 protruding from the wafer 10 'of the glazing l' linked to wires 9, 9 'and partly The back plastic strip (shown for explanatory purposes) is of the same shape, therefore in L. For example, the PVB is set back from the wafer 10 '.

Figure 5 is a front view showing a preassembly of the electrically controllable device 500 using the lamination interlayer and by spot adhesive contact.

FIG. 5 shows the spot adhesive contact of a front face 50 of a preferably square or rectangular transparent local rear thin plastic strip, ad hoc adhesive contact with a connecting face 20 'of a PVB backsheet. 2 intended to be in contact with the contact face F2 12 of the glazing (slice 10 shown) or the bonding face F3. The support 3 of diodes 4 is of rectangular shape and protrudes from the wafer 10. The front face 50 of the plastic strip 5 is against the rear face of the diode support and the plastic band 5 protrudes from the wafer 34.

The spot adhesive contact is by a network of point contacts 60 on either side of the diode zone 31 between PVB and protruding strip 5. To do this, the PVB and / or the plastic strip 5 are softened by local heating. punctually or using a solution such as alcohol.

Figure 6 is a front view showing a preassembly of the electrically controllable device 600 using the lamination interlayer and by spot adhesive contact.

The preassembly differs from FIG. 5 in that the support 3 is in L just as the rear plastic strip 5 is thin and transparent, preferably.

Figure 7 is a front view showing a preassembly of the electrically controllable device 700 with a plastic strip and by spot adhesive contact.

The pre-assembly differs from FIG. 6 in that the band 5 is not protruding from the wafer 34.

The spot adhesive contact is by a network of point contacts 60 opposite the diode area 31 on either side of the diodes 31 between the rear face 30 'of the PCB 3 and the strip 5 and the opposite side to the zone 32 power supply. To do this, the plastic strip 5 is softened by spot local heating.

Figure 7a is a front view showing a preassembly of the electrically controllable device 700a with a plastic strip 5 and by spot adhesive contact. The pre-assembly differs from FIG. 7 in that the support is T-shaped and the local thin plastic band 5 is identical in T-shape.

Figure 7b is a front view showing a preassembly of the electrically controllable device 700b with a plastic strip and by spot adhesive contact.

The pre-assembly differs from FIG. 7 in that the support is U-shaped, with two emergent extensions of the glazing 33, 33 'and the local thin plastic strip 5 of identical U-shape. Fig. 8 is a sectional view of the preassembly 800 of an electrically controllable device of a rear local plastic strip and lamination interlayer 2 before placement between the glass and lamination sheets.

The front face 50 of the thin and transparent plastic backing strip 5 is brought into ad hoc contact with the rear face 30 'of the support 3 of the diodes 4 by a contact network 60 coming from a local heating 7.

The front face 30 of the diode support is brought into ad hoc contact with the face 20 'of the PVB 2 by a contact network 60' from a local heating 7. PVB with individual through holes 21 housing the diodes 4.

Alternatively it is blind hole and even the PVB may be a set PCB / PET / PVB.

Figure 8 'is a pre-assembly sectional view 800' of the electrically controllable device of a rear plastic strip and a lamination interlayer before placement between the glass sheets and lamination.

The front face 50 of the thin and transparent plastic back strip 5 is brought into point-selective contact with the so-called connecting face 20 of the PVB 2 by a contact network 60a originating from a local heating.

The front face 50 of the thin and transparent plastic back strip 5 is optionally placed in point contact with the rear face 30 'of the support of the diodes 3 by a contact network 6 from a local heating.

Optionally, the front face 30 of the diode support is placed in point-selective contact with the face 20 'of the PVB 2 by a contact network 6' coming from a local heating, PVB 2 provided with individual blind holes housing the diodes 4.

FIG. 9a shows an F1 side view of a laminated glazing unit with an electrically controllable device 900, for example a surface element, such as an OLED for a light function (possibly forming a pictogram) or an OLED screen. Figure 9b shows this sectional glazing.

This is for example a windshield with an OLED in the form of a pictogram or an OLED screen 4 or a roof with an OLED. It can be a building glazing.

The bright and curved laminated glazing, comprising:

a first glazing 1, for example TSA glass and 2.1 mm thick, forming outer glazing, preferably tinted, with first and second main faces January 1, respectively face F1 said - and face F2, and a slice 10, the face F2 optionally coated with a functional layer (masking etc)

a second glazing 1 'forming internal glazing for example in TSA glass or clear or extraclair and 2.1 mm thick or even 1, 6mm or even less, with third and fourth main faces 13, 14 respectively said face F3 and face F4, the face F4 optionally coated with a functional layer (low emissivity, etc.) and / or the face F3 optionally coated with a functional layer (masking, heating, low emissivity, etc.)

between F2 and F3, a lamination interlayer 2 made of polymeric material, preferably PVB, preferably clear, of submillimetric thickness e1, preferably between 0.2 mm and 1 m conventionally about 0.38 mm, for example formed from a first solid sheet 2a and in adhesive contact with the face 13 F3 after lamination and a second perforated sheet PVB 2b provided with a reserve 25 and on the first sheet in adhesive contact with the face 12 F2 and with the first sheet after foliation

the OLED 4 comprising a support 3 and a front-face electroluminescent system housed in the reserve 25 and of thickness e2 + e2 less than the thickness of the perforated sheet 2b,

glued on the OLED (support side or front surface of the electroluminescent system) a thermoplastic band including PVB without plasticizer of thickness e3 of at most 0.3 mm and of identical size to the OLED, the rear face of the strip is in full surface adhesive contact with F2 side 12

The thermoplastic strip is based on polyvinyl butyral (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and more preferably less than 5% by weight and in particular without plasticizer. In particular one can choose as plasticizer-free PVB tape the product "MOWITAL LP BF" KURARAY company with the thickness e3 that is desired.

The laminating interlayer is made of conventional polyvinyl butyral (PVB). It can be acoustic, corner (for a head-up display), composite PVB / functional PET / PVB. The solid sheet in particular can be acoustic, corner (for a head-up display), composite PVB / functional PET / PVB. The holey sheet in particular can be tinted. Alternatively, a single PVB with a blind hole is used.

Before the lamination (and before placement between the two windows) there is assembly of the plastic strip 5 with the OLED 4 by local heating giving a ad hoc adhesive contact or by gluing (glue or double-sided) and possibly OLED 4 with the solid sheet 2a for example by local heating.

Here OLED 4 transmits towards the face F4 (internal light) and the OLED is emitted through the support of OLED 3 (bottom emitting in English). Then the plastic strip 5 is on the front surface of the OLED, on the electroluminescent system (having or not a polymeric encapsulation).

Here OLED 4 transmits towards the F4 side (internal light) and the OLED is top-emitting. Then the plastic strip is on the rear face of the support 3, so the opposite of the electroluminescent system (having or not a polymeric encapsulation).

FIG. 9c shows an F1 side view of a laminated glazing unit with an electrically controllable device, for example a surface element, such as an OLED for a light function (possibly forming a pictogram) or an active matrix OLED screen (AMOLED). Figure 9d shows this sectional glazing.

This glazing 900 'differs from the glazing of FIG. 9 in that:

the light is emitted on the F1 1 side face 1, for example for a rear window light signal or a side glazing or even windshield (flashing repeater etc)

and in that the OLED 4 emerges from the perforated sheet 2b side F2 12.

Also to compensate for the difference in thickness H between the PVB 2b and the OLED 4 side F2 a PVB frame 5a plastic identical to the plastic strip 5 is on the periphery of the OLED.

If H is large (at least 0.15mm for example), we can use several staircase strips.

As a variant, if H is <0.15 mm, the plastic strip 5 is chosen to be protruding on the PVB and preassembled with the PVB 2b, for example by local heating.

Alternatively, a single PVB with a blind hole is used.

The laminating interlayer is made of conventional polyvinyl butyral (PVB). It can be acoustic, corner (for a head-up display), composite PVB / functional PET / PVB. The solid sheet in particular can be stained, acoustic, corner (for a head-up display), composite PVB / functional PET / PVB. The holey sheet in particular can be tinted.

FIG. 10 is a sectional view of the preassembly electrically controllable device, plastic strip and lamination interlayer 900 before placement between the glass sheets and laminating to form for example the glazing 900 of Figure 9d.

The front face 50 of the thin and transparent plastic strip 5 is placed in point-selective contact with the rear face of the support of the diodes 3 by a contact network 60 coming from a local heating 7 creating a softening and an adhesion. The front surface 30 of the OLED 4 is optionally placed in spot contact with the face 20 of the solid PVB sheet 2a by a contact network 60b from the same local heating 7.

The front face 50a of the plastic frame 5a of material similar to the strip 5 is brought into adhesive contact with the face of the solid PVB sheet 2a by a contact network 60a from a local heating 7.

Then the pre-assembled element is placed between two panes, the free faces of the two sheets 2a and 2b are in adhesive contact with the faces F2 and F3 (bare or coated with a layer) after lamination and the free faces of the plastic strips 5, 5a are in adhesive contact with one of the faces F2 or F3 (naked or coated) optionally after laminating as well.

FIG. 10 'is a sectional view of the pre-assembly electrically controllable device, plastic strip and lamination interlayer 900' before placement between the glass and lamination sheets to form, for example, a variant of the glazing 900 of FIG. 9d.We pre-assemble two plastic strips which are for one said rear band 5 on the back side of the support and for the other said front band 5 'front surface of the device 4 (OLED etc.) and protruding on a laminating interlayer sheet 2b (PVB, composite PVB) provided with a reserve 25 housing the electrically controllable system 4.

The front face of the rear plastic strip 5 is optionally placed in point contact with the rear face 30 'of the support of the diodes 3 by a network of point contacts 60b from a local heating 7 creating a softening and adhesion.

The front face 50 of the rear plastic strip 5 is brought into point-selective contact with a face 20 of the PVB 2b by a network of point contacts 60a from a local heating 7 creating a softening and adhesion.

The front face of the plastic strip before 5 'is placed in pointwise adhesive contact with the other face 20' of the PVB 2b by a network of spot contacts 60 'from a local heating 7 creating softening and adhesion. The same side-side heater 20 may suffice on the side 20 '. Then the pre-assembled element is placed between two panes, the faces 20 'and 20' are in adhesive contact with the faces F2 and F3 (bare or coated with a layer) after lamination and the free faces of the plastic strips 5, 5 ' also.

Claims

1. A method of manufacturing an electrically controllable device glazing including vehicle glazing (100 to 900 ') comprising a laminated glazing unit comprising:

a first transparent glazing (1) with first and second main faces, said face F1 and F2 (1 1, 12)

- a second glazing (1 '), transparent, with third and fourth main faces (13, 14) respectively said face F3 and F4 (13, 14)

a lamination interlayer (2, 2a, 2b) of thermoplastic polymeric material, preferably the majority of the face F2 and the majority of the face F3 is in adhesive contact with the lamination interlayer,

an electrically controllable device (4, 4 ', 4 "), comprising a support (3), of width W 2 preferably of at most 1 m, of thickness e 2 in particular submillimetric, support with a front face (30), a rear face (30 ') and a wafer (34), of thickness e2, the front face being a carrier in a so-called functional zone (31) of an electrically controllable system, of thickness e2, preferably submillimetric, and the front panel possibly comprising a power supply zone (32, 33) adjacent to the functional zone, the electrically controllable device having a lower surface area than the lamination interlayer, the electrically controllable device having a front surface on the electrically controllable system

and the glazing comprising:

on the rear face (30 '), a polymeric connecting element (5) with a thickness e3 of at most 0.3 mm, in adhesive contact with the rear face and with one of the faces F 2 or F 3 then called face of contact, contact face being able to be bare or coated with a layer (71), the connecting element being of surface inferior to the interlayer of lamination,

and / or on the front surface, on the front surface, another polymeric connecting element (5 ') with a thickness e3 of at most 0.3 mm, in adhesive contact with the electrically controllable device and with one of the faces F2 or F3 then called bonding face, in particular opposite the contact face in the case of the two strips, bonding face that can be bare or coated with a layer, the other connecting element being of lower surface to the laminating interlayer

the process comprising the following steps: before the lamination, the supply of a preassembled element comprising the electrically controllable device, said connecting element and / or the other connecting element and possibly at least one sheet of the lamination interlayer (2), said sheet of assembly,

the connecting element comprising a plastic strip, preferably thermoplastic, which has a main face called the connecting face F _L opposite the rear face of the support, and the plastic strip having a free main face F ', opposite to the face link F _L

the bonding face F _L being in adhesive contact or bonded to the rear face

and / or the connecting face F _L protruding from the edge of the support on at least one side defining a protruding zone ZD facing a zone ZA of one of the main faces of the assembly sheet, the protruding zone ZD is in adhesive or glued contact with ZA area

and or

the other connecting element comprising a plastic strip, preferably thermoplastic, which has a main face called another connecting face F ' _L facing the front surface of the device, and the plastic strip having a free main face F ", opposite to the other connecting face F ' _L

the other face F ' _L being in adhesive contact or glued to the electrically controllable device

and / or the other connecting face F ' _L protruding from the edge of the electrically controllable device on at least one side defining another protruding zone Z'D facing another zone Z'A of one of the main faces of the assembly sheet, the other protruding zone ZD is in adhesive contact or glued with the zone Z'A

placing said preassembled element between the first and second glazings,

and the lamination step with said pre-assembled element comprising evacuation, or even pressurization, and heating, the lamination step leading to the adhesive contacting of the free face F _L with the contact face. in particular bare or coated and / or the free face F'L with the bonding face in particular bare or coated.

2. A method of manufacturing a glazing electrically controllable device according to the preceding claim characterized in that the plastic strip is transparent and / or the other plastic strip is transparent, the support is transparent, the placement of said preassembled element between the first and second glazing is in a transparent zone of the first and / or second glazing, the strip transparent covering the rear face at least the opposite of said functional area and / or the other transparent band covering at least said functional area.

3. A method of manufacturing a glazing electrically controllable device according to one of the preceding claims characterized in that it comprises the formation of said preassembled element according to at least one of the following configurations:

a) assembly of the connecting element with the support, the connecting face F _L being placed in adhesive contact or bonded with the rear face, bonding face F _L is brought into contact adhesive in full surface or punctual with the rear face (30 ') punctual by a network of spaced point adhesive contacts or is glued in full surface or punctually with the back side via a network of spaced point adhesive areas and / or

a ') assembling the other connecting element, the other connecting face F' _L being placed in adhesive contact or glued on the electrically controllable device (and / or the front face), the other connecting face F ' _L is contacted in full-surface or spot contact by a network of spaced apart spot adhesive contacts or is adhered to the surface or punctually via a network of spaced point adhesive areas and / or

b) assembling the connecting element with the lamination interlayer, the protruding zone ZD is brought into point-contact or full-surface contact with the zone ZA by an array of spaced apart spot adhesive contacts or the connecting face is glued via a network of ad hoc or full-face adhesive zones in the zone ZA and / or

b ') assembling the other connecting element with the lamination interlayer, the other protruding zone Z'D is brought into contact spot adhesive or full surface with the zone Z'A by an array of spaced point adhesive contacts or the other connecting face is glued via a network of ad-hoc or full-face adhesive zones to zone Z'A.

4. A method of manufacturing an electrically controllable device glazing according to claim 3 characterized in that the adhesive contact is by softening the plastic strip (5) and / or the other plastic strip (5 ').

5. A method of manufacturing a glazing electrically controllable device according to claim 4 characterized in that the adhesive contact is spot and local heating (7) and possibly also by pressure, including induction heating, hot air, by radiation (laser).

6. A method of manufacturing an electrically controllable device glazing according to claim 5 characterized in that during said preassembly with the element of connection or with said other connecting element, the electrically controllable device is on a first sheet of the lamination interlayer, and a second sheet of the lamination interlayer, in particular the assembly sheet, is on the first sheet, the heating local (7) leads to a spot contact of the first sheet with the second sheet.

7. A method of manufacturing an electrically controllable device glazing according to one of claims 5 to 6 characterized in that during said preassembly with the connecting element (5), the front surface of the electrically controllable device is on a first sheet of the lamination interlayer (2, 2a), in particular the assembly sheet, the local heating (7) leads to a point contacting of the front surface of the electrically controllable device with said first sheet of the lamination interlayer.

8. A method of manufacturing a glazing electrically controllable device according to one of the preceding claims characterized in that the plastic strip (5) and said lamination interlayer (2) are spaced before the lamination and after lamination the plastic strip and said interlayer laminating are in continuous contact, without leaving a gap between the back face and contact face and / or the other plastic strip (5 ') and said interlayer lamination (2) are spaced before the lamination and after lamination l Another plastic strip and said lamination interlayer are in continuous contact without leaving gaps between the front surface of the device and the bonding face.

9. A method of manufacturing an electrically controllable device glazing according to one of the preceding claims characterized in that the strip (5) is thermoplastic, based on polyvinyl butyral (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and more preferably less than 5% by weight and in particular without plasticizer, and said interlayer lamination is preferably based on polyvinyl butyral (PVB) including more than 15% by weight of plasticizers and / or the other band (5 ') is thermoplastic, based on polyvinyl butyral (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and even better less than 5% by weight and in particular without plasticizer, and said interlayer lamination is preferably based on polyvinyl butyral (PVB) especially containing more than 15% by weight of plasticizers.

10. A method of manufacturing a glazing electrically controllable device according to one of the preceding claims characterized in that before the lamination the plastic strip (5) protrudes from the edge of one of the first and second glazing and is folded on the face F4 or F1 or the other plastic strip (5 ') protrudes from the edge of one of the first and second windows and is folded on the face F4 or F1.

1 1. A method of manufacturing an electrically controllable device glazing according to one of the preceding claims in that before the placement of said preassembled element comprising the other connecting element (5 '), the lamination interlayer comprises a sheet said rear, which is possibly said assembly sheet, with a main face F'x which is placed against the rear face of the support, and the main face F'x possibly comprising said zone Z'A, the other so-called plastic band front plastic strip is against the front face, and on the electro-controllable system which has a set of discrete and fine components preferably with e2 <0.15mm, and after the lamination, the back sheet is in adhesive contact with the back side (30 '), the faces F2 and F3 and preferably in contact with the other plastic strip.

12. A method of manufacturing a glazing electrically controllable device according to one of claims 1 to 10 characterized in that before the placement of said preassembled element comprising the connecting element and optionally the other connecting element, the interlayer lamination (2) comprises a so-called front sheet, which is possibly said assembly sheet, with a main face Fx (20 ') placed against the front surface of the electrically controllable device including the front face (30) of the support, and the face main Fx (20 ') optionally comprising said zone ZA, and after the lamination, the front sheet is in adhesive contact with the front surface of the electrically controllable device including the front face of the support.

13. A method of manufacturing a glazing electrically controllable device according to the preceding claim characterized in that the main face Fx of the front sheet (20) comprises at least one blind hole or through (21) width W1 of at most 20mm housing the so-called discrete electro-controllable system, in particular an electronic (opto) component, such as a photodiode or an inorganic diode, of width W'2 of at most 20 mm and in that with e2> 0.15 mm, e2 < 0,15mm and e3 <0,15mm, the front sheet being in adhesive contact with the front face of the support, possibly the hole is through and the other possible plastic strip between the bonding face and the front sheet covers each component in a through hole.

14. A method of manufacturing a glazing electrically controllable device according to one of claims 1 to 1 1 characterized in that before the placement of said preassembled element comprising said connecting element and / or the other connecting element, the interlayer laminating comprises a perforated leaflet thus comprising a saving (25) housing all or part of the electrically controllable system and the support, the sheet having the main face Fx which is free and possibly comprising said zone ZA or F'x and possibly comprising the zone Z'A, the plastic strip (5) is opposite the savings (25), with a difference in height H1 between the face Fx and the free face F _L of the plastic strip of at most 0.3 mm and / or the other plastic strip is next to the savings (25), with a difference in height HΊ between the face F'x and the free face F ' _L of the other plastic strip of at most 0.3mm.

15. A method of manufacturing a glazing electrically controllable device according to the preceding claim characterized in that prior to lamination with the preassembled element comprising the connecting element, the electrically controllable device emerges from the perforated leaflet, the electrically controllable device (4) and the main face Fx are spaced from a non-zero height H2 greater than e2, H2 being at most 0.3 mm, the method comprises positioning an additional plastic strip (5a) forming a frame on the edge of the electrically controllable device Ex thickness of at most 0.15mm and less than or equal to H2, and is opposite an area of the perforated sheet, and the additional plastic strip has a main face F ", opposite to a connecting face FC, optionally the additional plastic strip comprises a single strip or a plurality of plastic strips in staircase and Ex is then the total thickness of the plastic strips, and by the lamination step, said other free face of the additional plastic strip (5a) is brought into adhesive contact with the contact face (12).

16. Glazing electrically controllable device in particular obtained according to one of the preceding claims comprising a laminated glazing comprising:

- a second glazing (1 '), transparent, with third and fourth main faces (13, 14) respectively said face F3 and F4

a lamination interlayer (2) of thermoplastic polymeric material, preferably the majority of the face F2 and the majority of the face F3 is in adhesive contact with the lamination interlayer,

an electrically controllable device (4), comprising a support (3), in particular of width W2 of at most 1 m, of thickness e2 in particular submillimetric, support with a front face (30), a rear face (30 ') and a wafer (34), the front face being a carrier in a so-called functional zone (31) of an electrically controllable system (4) of thickness e2, preferably submillimetric, and the face front optionally comprising a power supply zone (32,33) adjacent to the functional zone, the electrically controllable device having a lower surface area than the lamination interlayer

- on the rear face (30 '), a polymeric connecting element (5) which is a plastic strip of thickness e3 of at most 0.3 mm, in adhesive contact with the rear face and with one of the faces F2 or F3 then called contact face, the connecting element being of lower surface to the lamination interlayer, the device is therefore in a region of the glazing

and / or on the front surface (30), another polymeric bonding element (5 ') which is another plastic strip of thickness e3 of at most 0.3 mm, in adhesive contact with the front surface and with one of the faces F2 or F3 then called bonding face, the other connecting element being of lower surface to the lamination interlayer.

17. Glazing electrically controllable device including vehicle according to the preceding claim characterized in that the plastic strip (5) is thermoplastic, based or poly (vinyl butyral) (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and more preferably less than 10% by weight and in particular without plasticizer, and said interlayer lamination (2) is based on polyvinyl butyral (PVB) including more than 15% by weight of plasticizers and / or the other plastic strip (5 ') is thermoplastic, based on poly (vinyl butyral) (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and even less preferably less 10% by weight and in particular without plasticizer, and said interlayer lamination (2) is based on polyvinyl butyral (PVB) including more than 15% by weight of plasticizers.

18. Glazing electrically controllable device including a vehicle according to one of claims 16 or 17 characterized in that the contact face (12) is bare or coated with said layer preferably with a thickness of at most 50pm or even submicron, in particular selected from a masking layer (71), a transparent layer, an electroconductive layer, a heating layer, a low-emissivity layer, solar control, the adhesive contact being with said layer and / or the bonding face (13) is bare or coated with said layer preferably with a thickness of at most 50 μm or even submicron, in particular chosen from a masking layer, a transparent layer, an electroconductive layer, a heating layer, a low-emissivity layer, solar control the adhesive contact being with said layer.

19. Glazing electrically controllable device including a vehicle according to one of claims 16 to 18 characterized in that said plastic strip (5) exceeds of the rear face on at least one side and even two sides, is in adhesive contact with the lamination interlayer (2) and / or said other plastic strip (5 ') protrudes from the front surface and is in adhesive contact with the lamination interlayer.

20. Glazing electrically controllable device including vehicle according to one of claims 16 to 19 characterized in that the electrically controllable system is selected from:

a capacitive or inductive control switch, an antenna

one or more electronic (opto) components, in particular discrete, in particular a sensor, a camera, a photodiode, an inorganic light-emitting diode (4),

And in that :

- i) the plastic strip and the lamination interlayer are in adhesive contact with the front face of the support, the possible other plastic strip is between the interlayer and the bonding face and covers the opening or openings

or m) the other plastic strip is on the electrically controllable device without the plastic strip, and the lamination interlayer is in adhesive contact with the back side.

21. Glazing electrically controllable device including vehicle according to one of claims 16 to 20 glazing characterized in that the system is surface and is selected from:

a surface light system, such as an organic electroluminescent system

OLED, a TFEL, or a quantum dot light emitting diode called QLED,

- a dynamic display system,

a liquid crystal system, an optical valve, an electrochromic system, and in particular the lamination interlayer houses the device

and i) said plastic strip is on the electrically controllable device without the other plastic strip, in particular said plastic strip protruding and in adhesive contact with the laminating interlayer

or j) the other plastic strip is on the electrically controllable device without the plastic strip,

or k) said plastic strip is on the electrically controllable device.

22. Glazing electrically controllable device including vehicle according to one of claims 16 to 21 characterized in that the lamination interlayer (2) is poly (vinyl butyral) (PVB), including PVB with a hole or reserve comprising the electrically controllable device, optionally - Acoustic especially for a windshield or a vehicle roof and / or corner including a windshield,

- possibly with metal wires

or alternatively forming a PVB / functional plastic film or first PVB / functional plastic film / second PVB composite element, the functional plastic film, preferably transparent, such as a polyester, a PET, carrying a functional electroconductive layer, in particular PVB with a hole or blind reserve in the first PVB.

23. Vehicle comprising at least one electrically controllable device glazing according to any one of claims 16 to 22, in particular windshield, roof, side glazing, rear window.