FR3077229A1 - SHEET GLAZING WITH ELECTRO-CONTROLLABLE DEVICE AND MANUFACTURE - Google Patents

Abstract

The invention relates to a laminated glazing unit incorporating an electrically controllable device and its manufacture incising a pre-assembly with a thin plastic strip.

Description

SHEET GLAZING WITH ELECTRICALLY CONTROLLED DEVICE AND MANUFACTURE

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

Automotive glass is increasingly integrating the lighting or light signaling function by means of inorganic light-emitting diodes.

The document WO2016079459 describes a luminous laminated glazing forming a windshield of a motor vehicle incorporating diodes on a printed circuit board (PCB) to deliver warning light signals to the driver.

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

- laminated glazing comprising:

- a first glazing forming exterior glazing with first and second main faces called F1 and F2

- a polyvinyl butyral (PVB) laminating interlayer

- a second glazing forming interior glazing 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 capable of emitting a signaling light, red, warning the driver, each diode having an emitting face emitting towards the interior glass on the so-called front face of the PCB

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

There is a formation of bubbles in the double-sided adhesive tape or even blurring of the adhesive tape (transparent) which can generate appearance defects. The use of this double-sided adhesive tape is also restrictive in terms of process and is easily polluted, 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 generally, the manufacture of any laminated glazing incorporating an electrically controllable device (discrete, surface, etc.) can be improved.

Also, the first object of the present invention is a method for manufacturing a glazing with an electrically controllable device, in particular for a vehicle comprising a laminated glazing, in particular curved, comprising:

a first glazing, transparent, in particular in mineral or plastic glass, in particular curved, possibly clear, extra-clear or tinted in particular gray or green, preferably curved, often forming exterior glazing, with first and second main faces respectively called face F1 and face F2, in particular F1 or F2 each being bare or coated (functional layer, monolayer or multilayer etc. in particular layer with a thickness of at most 50 μm or even submicron) of thickness preferably for an automobile glazing of at most 2 , 5mm, even at most 2.2mm including 1.9mm, 1.8mm, 1.6mm and 1.4mm- or even at most 1.3mm or at most 1mm

a second glazing, transparent, in particular made of mineral glass and preferably clear or extra-clear or even tinted or plastic, in particular curved, often forming interior glazing with third and fourth main faces, respectively called face F3 and face F4, of thickness for a automotive glazing preferably less than that of the first glazing, even at most 2.2mm - in particular 1.9mm, 1.8mm, 1.6mm and 1.4mm- or even at most 1.3mm or at least plus 1mm, the total thickness of the first and second glazing preferably being strictly less than 4mm, even 3.7mm preferably at least one of the first or second glazing being made of mineral glass, in particular F1 or F2 each being bare or coated with a layer in particular mineral (functional layer, monolayer or multilayer etc in particular layer with a thickness of at most 50 μm 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 face F3, and in particular a thickness e1 subcentimetric, preferably the majority of the face F2 and of the face F3 is in adhesive contact with the laminating interlayer, for automotive glazing preferably e1 of at most 1.8mm, better at most 1.2mm and even d '' at most 0.9mm (and better at least 0.3mm and even at least 0.5mm), in particular set back from the edge of the first glazing by at most 2mm and set back from the edge of a second glazing at most 2mm preferably at least one of the first or second glazing being made of mineral glass

- and laminated glazing comprising between the faces F2 and F3:

an electrically controllable device, in particular a strip (elongated, for example square, rectangular, in L, in T, in comb, etc.), comprising a support in particular a strip (elongated, for example square, rectangular, in L, in T, in comb etc), in particular of width W2 of at most 1m or at most 40cm and even at most 20cm, 10cm or 5cm, of thickness e2 in particular submillimetric and even at most 0.15mm, with one face front, a rear face and a wafer, the front face carrying in a so-called functional area of an electrically controllable system of thickness e'2 preferably submillimetric, in particular of width W'2-in particular at most 5cm or subcentimetric - (discrete component, etc.) or substantially equal to W2 (surface system), and the front face possibly comprising an electrical supply zone adjacent to the functional zone, in particular opening or even with an extension extending beyond the edge of the first or second e glazing, the electrically controllable device being of surface smaller than the laminating 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 the functional area, in particular provided with discrete (opto) electronic components or a surface system, a polymeric connecting element of thickness e3 of at most 0.3mm, 0, 25pm and even at most 0.15m, in particular from 25 to 100pm, 40 to 70pm and even 50pm, in adhesive contact with the rear face and with one of the F2 or F3 faces called the contact face ((bare or coated) -, in particular of width W3 of at least 0.8W2 or 0.9W2 and / or at most 1m or at most 40cm and even at most 20cm, 10cm or 5cm, the element of bond having an area less than the laminating interlayer, the method comprises the following steps:

before laminating, 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 laminating interlayer called assembly sheet, the connecting element comprising a plastic strip, preferably thermoplastic, which has a main face called the connecting face F _L facing the rear face of the support, preferably in the functional area and / or in the electrical supply area, in particular covering (essentially) the rear side, plastic strip preferably set back no more than 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 in a limited area) , and the plastic strip having a free main face F ′, opposite the connecting face F _L ,

the bonding face F _L being in adhesive contact or glued to the rear face (the bonding face F _L projecting or not beyond 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 on the edge of the functional and / or electrical supply zone concerned), defining a protruding zone ZD opposite a zone ZA of one of the main faces of the assembly sheet, the protruding area ZD is in adhesive or glued contact with the area ZA, preferably ZA is at most 10cm or 5cm or 1cm from the edge of the support - and even protruding over two preferably opposite sides, on three sides, on the periphery of the functional area, etc., in particular with another protruding zone ZE opposite 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

- the placement of said pre-assembled element, between the first and second glazing, before, after or simultaneously with the placement of the laminating interlayer between the first and second glazing-

- And the laminating step, with said preassembled element, comprising a vacuum, or even a pressurization, and a heating, the laminating step leading to the adhesive contact of the free face F _L (naked) with the contact face, -giving full surface adhesive contact of the free face F _L with the contact face-at the adhesive contacting of the lamination interlayer, in particular of the assembly sheet (if applicable), with the faces F2 and F3).

The double-sided adhesive tape used in the luminous laminated roof of the prior art requires the removal of a protective film (liner '). Furthermore, the surface is sticky before positioning and therefore does not allow the support to be easily readjusted if necessary. In addition, liner residues can lead to bubbling or blurring.

According to the invention to simplify and speed up the manufacture of the glazing, a preassembled element is used by gluing or adhesive contact off the laminating line.

The plastic strip is therefore already bonded (full surface for 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 be used alone to hold the device and there is no need for an additional connection on the back and plastic strip.

The plastic strip is capable of sticking to the face of the glazing by laminating. Unlike double-sided adhesive tape, the free face of the thermoplastic strip is non-sticky and ready to 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 in the degassing cycle in an oven), the vacuum used 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 resistance, especially when the support is large.

It is possible to envisage, after the placement of the preassembled element and of the lamination interlayer (in particular if necessary the assembly sheet), placing the preassembled element in punctual adhesive contact with the contact face and / or the 'laminating interlayer (in particular if necessary the assembly sheet) with the contact face to maintain it before placing under vacuum.

The electrocontrollable 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) strip can partially cover the laminated glazing (for example at most 50% or 40% or 30% or even at most 20% or 10%). ). The coverage rate of the strip can preferably be identical to or slightly higher than that of the electrically controllable device.

The laminating interlayer (the assembly sheet, etc.) has a surface (much) greater than this strip, and can cover at least 70%, 80% or 90% or 95% of the glazing with an electrically controllable device. The laminating interlayer (the assembly sheet, etc.) can be set back from the edge of the first glazing (and / or second glazing), in particular by at most 2mm. When the support (and the strip) does not protrude from the first or second glazing, it is preferable for the laminating interlayer to surround the support (therefore that the interlayer is present between the support and the edge of the nearest laminated glazing).

We therefore prefer a thin plastic strip with a surface area smaller than the interlayer (on the assembly sheet) for cost optimization and even for better handling during manufacture, given its thinness.

The (thermo) plastic strip may protrude from the edge of the support in the laminated glazing zone with the laminating interlayer, preferably at most 20, 10cm or 5cm and even 1cm from the edge of the support to facilitate the setting place (without folds etc) in particular if the pre-assembly intervenes between rear face and plastic band.

In the present invention, the expression “at most X, Y or Z” means at most X, (even) at most Y and (even again) at most Z.

According to one configuration, the plastic strip is transparent (and without defects), the support is transparent (the electrically controllable system is possibly transparent or at least leaving a global transparency), the placement of said preassembled element between the first and second glazing is in an area transparent of the first and / or second glazing, the transparent strip covering the rear face at least on the side opposite to said functional area.

In one configuration, the method comprises, the formation of said preassembled element according to at least one of the following configurations (a) or b) or a) + b)):

a) assembly of the connection element with the support, the connection face F _L being brought into adhesive contact or bonded with the rear face, connection face F _L is brought into adhesive contact in full surface or point with the rear face punctual by a network of spaced apart adhesive contacts / or is bonded with the rear face for example in full surface or punctually via a network of spaced apart adhesive zones or even via an adhesive frame (bead of glue or double-sided adhesive tape) by peripheral example - forming a seal - or with adhesive strips (bead of glue or double-sided adhesive tape) for example two peripheral strips

b) and / or assembly of the connecting element with the lamination interlayer, the protruding zone ZD is brought into point or full surface adhesive contact with the zone ZA by a network of spaced apart adhesive contacts or the bonding face is bonded in particular via a network of punctual or full adhesive zones facing the ZA zone

This time, we can use a double-sided tape because the operation is not in the flipping line.

Adhesive contact, not involving the addition of adhesive material, is preferably by softening the plastic strip, preferably thermoplastic which leads to adhesive contact between faces.

Particularly advantageously, the adhesive contact is punctual and by local heating and possibly also by pressure, in particular induction heating, by hot air, by radiation (laser).

Each point adhesive contact is, for example, at most 15mm wide.

Each point adhesive bonding is, for example, at most 15mm wide.

As a heating tool (and better pressure) one can use a metal pen, a "soldering iron", with a flat tip (and preferably with an anti-adhesive film (silicone, elastomeric PTFE etc) capable of letting the heat pass , one or more heated fingers, a heat gun.

Ad hoc adhesive contacting can be done in one operation for all of the contacts. You can choose a heating tool that allows you to perform the various point adhesive points in a single operation.

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

Local heating can be by applying a heating tool on the rear side and / or on the front side. We prefer the rear side.

During said pre-assembly with the connecting element, the electrocontrollable device (the rear face) is for example on a first sheet of the laminating interlayer, face of the first sheet which is on the side opposite to said 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 punctual contacting of the first sheet with the second sheet.

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

In one configuration, the (thermo) plastic strip and said laminating interlayer are spaced before the laminating for example by at most 5mm or 1mm, and after laminating (by creep) the (thermo) plastic strip and said laminating interlayer, are in continuous contact, leaving no space between the rear face and contact face.

Preferably, the strip is thermoplastic, is based on poly (vinyl butyral) (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and better still less than 5% by weight and in particular without plasticizer and in particular of thickness e3 of at most 0.15mm in particular from 25 to 100pm, 40 to 70pm and even from 50pm. And the laminating interlayer is based on poly (vinyl butyral) (PVB) - with plasticizer, conventional - and in particular of thickness at least 0.3mm and even at least 0.6mm.

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

If one or more local cuts are made in the support, the thermoplastic strip can be integral / whole or with the local cuts.

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

When the support has an L-shaped, bent shape, etc., the shape of the plastic strip can be adapted accordingly or alternatively, for simplicity, using a strip of rectangular, square shape. For example in this configuration with a rectangular strip and a first support in L or F or E, in comb, the plastic strip can clearly protrude from the edge of the first support in the direction of the edge of the nearest first glazing.

The support can be sufficiently flexible (flexible) to adapt to the curvatures of the curved laminated glazing.

The support may be associated with a flat connector extending up to and even beyond the edge of the glazing. A flexible connector is preferably adapted to the curvatures of the glazing, comprising a plastic, for example PEN, polyimide. The flat connector can be of width (dimension along the edge) less than or equal to the dimension of the support (of diodes) in particular along the edge.

The (flexible) support 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 (of the windshield).

After the laminating, the support, preferably flexible, may comprise an external part of electrical supply extending up to the edge of the laminated glazing and protruding from the edge of the glazing and even folded over on the face F4 (or F1).

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

In another embodiment, before placing said preassembled element with the connecting element, the laminating interlayer comprises a so-called front layer (tinted, corner, acoustic multilayer, with wires, composite PVB / PET / PVB assembly) , 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 discrete system such as an (opto) electronic component), and the main face Fx possibly including said zone ZA. After the lamination, the front sheet (in particular single) (the face Fx) is in adhesive contact with the front surface of the device, in particular the front face of the support (bare or coated, with electrical circuit, etc.).

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

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

When the electrocontrollable system is too thick but discreet (punctual) it is possible to make a hole in the front sheet dedicated to the electrocontrollable system for example as already described for the diodes in the aforementioned prior art or more generally for other electrocontrollable systems ((opto) electronics components etc). Also, in a first configuration, the main face Fx of the front sheet comprises at least one blind or through hole with a width W1 of at most 20.15mm, 10mm, 5mm, 2mm and even of length at most 10mm / 5mm / 2mm accommodating the so-called discrete electrocontrollable system, in particular an (opto) electronic component - such as a photodiode or an inorganic diode with e'2> 0.15mm (requiring cutting of the interlayer) and in particular submillimetric even at most 0.5mm, of width W'2 of at most 20mm, mm, 5mm, 2mm and even of length of at most 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 electrocontrollable system ((opto) electronic component) preferably wider by at most 0.5mm or even at most 0.1mm. Possibly the hole is through.

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

When the electrocontrollable system is too thick but areal (fairly extensive) it is preferably housed in a blind hole or through a sheet of laminating interlayer. Also, in a second configuration, before placing said preassembled element (before or after preassembly) with said connecting element and / or the other connecting element, the lamination interlayer comprises a perforated sheet (single sheet, composite sheet, etc. ) thus comprising a spar (blind or through) housing all or part of the electrically controllable system and of the support, (all or part between the glazings, at least the functional zone, and all or part of the electrical supply zone between the glazings, preferably distinct from a notch (ie a peripheral opening savings) and even preferably surrounding all or part of the edge of the device, the perforated sheet having the main face Fx which is free and possibly comprising said zone ZA (oriented towards the contact face after placement) and possibly including zone Z'A, the (thermo) plastic strip is opposite the 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.

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

In particular, before the lamination with the preassembled element comprising the connecting element, the electrocontrollable device emerges from the perforated sheet (the rear face of the support or the front surface) the electrocontrollable device and the main face Fx are spaced apart by a height Non-zero H2 greater than e2 (and less than e2 + e'2>, H2 being at most 0.3mm / 0.2mm / 0.15mm, and the rear face emerging from the perforated sheet. The method includes positioning an additional plastic strip, preferably thermoplastic (and the same 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 at most 0.15 mm and less or equal at 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 a connecting face FC, possibly the additional plastic strip comprises a single strip or a plurality of plastic strips in steps and Ex is then the total thickness of the plastic strips

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

In particular, FC can be in adhesive contact with the perforated sheet before placing said preassembled element between the first and second glazing by the steps and tools already mentioned for the preassembly (softening, local heating, etc.), blind hole or reserve in the first or second PVB

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

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

In a configuration:

-the first and second glazing 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 made of plastic, for example thinner (film), etc., for example of PC, PMMA, PET

The laminated glazing with an electrically controllable device according to the invention can be part of double glazing (glazing on the exterior side of the building or glazing on the interior side of the building) or even triple glazing.

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

The invention also relates to a glazing with an electrically controllable device in particular obtained according to the manufacturing process as described above comprising a laminated glazing comprising

a first glazing, transparent, in particular in mineral or plastic glass, in particular curved, possibly clear, extra-clear or tinted in particular gray or green, preferably curved, often forming exterior glazing, with first and second main faces respectively called face F1 and face F2, in particular F1 or F2 each being bare or coated (functional layer, monolayer or multilayer etc. in particular layer with a thickness of at most 50 μm or even submicron) of thickness preferably for an automobile glazing of at most 2 , 5mm, even at most 2.2mm including 1.9mm, 1.8mm, 1.6mm and 1.4mm- or even at most 1.3mm or at most 1mm

a second glazing, transparent, in particular made of mineral glass and preferably clear or extra-clear or even tinted or plastic, in particular curved, often forming interior glazing with third and fourth main faces, respectively called face F3 and face F4, of thickness for a automotive glazing preferably less than that of the first glazing, even at most 2.2mm - in particular 1.9mm, 1.8mm, 1.6mm and 1.4mm- or even at most 1.3mm or at least plus 1mm, the total thickness of the first and second glazing preferably being strictly less than 4mm, even 3.7mm preferably at least one of the first or second glazing being made of mineral glass, in particular F1 or F2 each being bare or coated with a layer in particular mineral (functional layer, monolayer or multilayer etc in particular layer with a thickness of at most 50 μm or even submicron)

a lamination interlayer made 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 face F3, and in particular a thickness e1 subcentimetric, preferably the majority of the face F2 and of the face F3 is in adhesive contact with the laminating interlayer, for automotive glazing preferably e1 of at most 1.8mm, better at most 1.2mm and even d '' at most 0.9mm (and better at least 0.3mm and even at least 0.5mm), in particular set back from the edge of the first glazing by at most 2mm and set back from the edge of a second glazing at most 2 mm preferably at least one of the first or second glazing being made of mineral glass -and the laminated glazing comprising between the faces F2 and F3:

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

- on the rear face, a polymeric connecting element which is a plastic strip of thickness e3 of at most 0.3mm, 0.25pm and even at most 0.15m, in particular from 25 to 100pm, 40 at 70pm and even from 50pm in adhesive contact with the rear face and with one of the faces F2 or F3 then called contact face, the connecting element having a surface area less than the lamination interlayer, in particular of width W3 d '' at least 0.8W2 or 0.9W2 and / or at most 1m or at most 40cm and even at most 20cm, 10cm or 5cm, the connecting element having an area less than the interlayer of foliation

Preferably one or more of the following characteristics are provided:

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

-the transparent (thermo) plastic strip has a blur of less than 5% and devoid of bubble type defects (size of less than 0.1 mm) has a TL of at least 70%, 80%, 90%, the transparent support and thermoplastic strip assembly has a TL of at least 70% and 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 laminating interlayer

- the laminating interlayer is made of poly (vinyl butyral) (PVB), in particular PVB with a hole or reserve comprising the electrically controllable device, possibly

-acoustics in particular for a windshield or a vehicle roof and / or in a corner in particular for a windshield,

-possibly with metallic wires (heating etc)

or again forming a composite PVB / functional plastic film or first PVB / functional plastic film / second PVB element, the functional plastic film, preferably transparent, such as a polyester, a PET, being a carrier of a functional layer, in particular electrically conductive, in particular PVB with a blind hole or reserve in the first PVB.

The electrocontrollable system can be chosen in particular from:

- a capacitive or inductive control switch, an antenna

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

And

- I) the plastic strip and the laminating interlayer are in adhesive contact with the front face of the support, in particular the laminating interlayer houses the electronic component (s) (opto) with in particular e'2> 0.15mm and e2 <0 , 15mm and even e3 <015mm, in a blind or through opening preferably a dedicated opening by optoelectronic component.

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

-a rain detector (preferably in the wiper area) typically from 100mm ² to 600mm ²

-a visible camera (anti-collision detector, object or person detector in motion or not.) or infrared (night vision, anti collision detector object or person detector in motion or not, for example trapezoidal, and even several cameras of the same type for stereoscopic vision, in particular vision sensor of the CCD type (charge coupled device in English) and CMOAS (Complementary Metal Oxide Semiconductor in English) -one or more (typically 6) sensors of light, like a photodiode, typically of size from 1.2 × 1.4 mm ² to 1.4 × 1.8 mm ² or even of thickness e'2 of at most 0.7 mm and even 0.7 mm and / or width W'2 of at most 2mm, for example type APDS-9005 from the company AVAGO TECHNOLOGIES

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

- an alarm sensor (detection of a defect in the integrity of the glazing, etc.), typically of conductive wire size from 12 to 150 μm in diameter or by an electrically conductive layer (opposite F2 or F3)

- a fog detector and linked to a heating element (resistive etc) - like an anti-fog, anti-condensation, anti-frost -, typically of size of 100-200 cm ² for example integrated in a rain detector

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

- an acoustic sensor (based on a piezoelectric element)

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

- a diagnostic sensor (faults in laminated vehicle glazing, in particular windshield or side glazing) based on an electrically conductive layer (full surface)

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

The electrocontrollable system can be surface in particular with a width W2 of at least 20mm and even 50mm and is in particular chosen from

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

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

-a liquid crystal system (with 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 houses the device (via a stockpile)

And or

i) said plastic strip protrudes from the support and in adhesive contact with the laminating interlayer and is preferably in adhesive contact with the front surface of the support

As an AMOLED screen, reference can be made to those described in patents WO2017 / 115040, WO2017 / 115041 WO2017 / 115042 WO2017 / 115043.

As an OLED forming a pictogram or backlit a pictogram (enamel, etc.), reference may be made to those described in the patents WO2017103425 and WO2017103426.

As a liquid crystal system, for example a partition in a dwelling, reference may be made to those described in patents WO2011 / 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 may be made to those described in the patents DE 102013001334 A1, DE 102005049081 B3, DE 102005007427 A1 DE 102007027296 A1 US -2015-0331296).

As a light touch switch, reference may be made to those described in patents WO2018 / 002707 or WO2018 / 002723.

On the front surface of the electro-controllable device chosen light source (LED, OLED, TFEL, QLED etc) one can use a collimation optic (fresnel lens, prismatic film, crossed prismatic films, film with 2D pattern network) and preferably without any other plastic strip or laminating interlayer 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 light or a flashing (repeater), a clearance light, position light

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

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

- the light-emitting system is an organic light-emitting diode called OLED, in particular transparent OLED (TOLED) or a quantum dot light-emitting 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 emission from the rear comprising the support (transparent or opaque or with an opaque layer) which bears on the front face side in this order away from the support: a possible functional under layer, a transparent anode, an organic electroluminescent system, a reflective cathode.

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

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

The laminating interlayer is for example formed from one or more sheets. We can choose a classic PVB like RC41 from Solutia or Eastman.

The laminating interlayer may comprise at least one so-called central layer of viscoelastic plastic material with vibro-acoustic damping properties, in particular based on polyvinyl butyral (PVB) and of plasticizer, and the interlayer, and further comprising two outer layers in Standard PVB, the central layer being between the two outer layers. As an example of an acoustic sheet, mention may be made of patent EP0844075. Mention may be made of the acoustic PVBs described in patent applications WO2012 / 025685, WO2013 / 175101, in particular tinted as in WO2015079159.

The lamination interlayer may include 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 part being at least (and even at most) between the electroluminescent element (OLED, QLED, etc.) is the F2 face.

The glass, preferably internal, in laminated glazing, in particular thin glass with a thickness of less than 1.1 mm, is preferably chemically toughened. It is preferably clear. Examples of applications WO2015 / 031594 or WO2015066201 can be cited.

In order to limit heating in the passenger compartment or to limit the use of air conditioning, the first glazing or at least one of the glazing (preferably the outer glass) is tinted. And the glazing, in particular laminated, may also include a layer reflecting or absorbing solar radiation, preferably opposite F4 or opposite F2 or F3, in particular a layer of transparent electroconductive oxide known as TCO layer or even a stack of layers. thin layers comprising at least one TCO layer, or stacks of thin layers comprising at least one layer of silver (in F2 or F3 preferably for laminated glazing), the or each layer of silver being disposed between dielectric layers.

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

For example, the low emissivity layer comprises the following sequence: high index sublayer / low index sublayer / a TCO layer / optional dielectric overlay.

Mention may be made, as low-emissivity layer, of those described in patent US2015 / 0146286, on the face F4, in particular in Examples 1 to 3.

The invention naturally relates to any vehicle, in particular a motor vehicle, comprising at least one glazing unit as described above.

A diode can be of the “chip on board” type or even very preferably a surface-mounted component (SMD in English) then comprising a peripheral envelope (often called “packaging”).

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

As flexible PCB we can cite the AKAFLEX® range of products (in particular PCL FW) from the company 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 OLEDs in a first embodiment

Figure 1bis 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 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 OLEDs in a variant of the first embodiment.

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

Figure 2 is a schematic cross-sectional view of laminated glazing with internal light in one embodiment of the invention

Figure 2 'is a schematic cross-sectional view of a luminous laminated glazing with diodes in an alternative embodiment of Figure 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.

Figure 2bis is a schematic cross-sectional view of a laminated luminous glazing with diodes in an alternative embodiment of Figure 2

Figure 2 ”shows a diode mounted on the surface of a diode holder.

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

FIG. 4 is a perspective view of a luminous pane of diodes with the diode support.

FIG. 5 is a front view showing a preassembly of the electrically controllable device using the lamination interlayer and by contacting with point adhesive.

FIG. 6 is a front view showing a preassembly of the electrically controllable device using the laminating interlayer and by contacting with point adhesive.

Figure 7 is a front view showing a pre-assembly of the electrically controllable device with a plastic strip and by contacting point adhesive.

FIG. 7a is a front view showing a preassembly of the electrically controllable device with a plastic strip and by contacting with point adhesive.

FIG. 7b is a front view showing a preassembly of the electrically controllable device with a plastic strip and by contacting with point adhesive.

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

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

FIG. 9a shows a front view on the F1 side of a laminated glazing with an electrically controllable device, for example surface area, such as an OLED for a light function (possibly forming a pictogram) or an OLED screen. Figure 9b shows this glazing in section.

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

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

FIG. 10 ’is a sectional view in pre-assembly of the electrically controllable device with a plastic interlayer strip in FIG. 9d before being placed between the glass sheets and laminating.

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

Figure 1 shows (from the inside view of the vehicle) a windshield 1000 of a motor vehicle traveling on a three-lane road with a car in front.

The windshield is laminated glazing with internal light signals and comprising:

- A first set of six diodes 4 on the front face 30 of a first printed circuit board called PCB 3 integrated between the external glazing and the internal glazing T of the laminated glazing, diodes in a row arranged in the clear of glass in an edge zone of the windscreen along the lower longitudinal edge possibly in or in the vicinity of a peripheral masking zone (opaque enamel, etc.) of the exterior glazing (masking not shown) or even alternatively in a zone with alternation masking area (opaque layer, like an opaque enamel) and transparent area (facing a diode) of the exterior and / or interior 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 T of the laminated glazing, diodes in a row arranged in the clear of glass in an edge zone of the windscreen along the lateral edge (left), in particular on the driver's side, possibly in or in the vicinity of a peripheral masking zone (opaque enamel, etc.) of the exterior glazing or even in a variant zone with alternating masking zone (opaque layer, like an opaque enamel) and transparent zone (facing a diode) of the exterior and / or interior 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 and the internal glazing T of the laminated glazing, diodes in a row arranged in the clear of glass in an edge zone of the windscreen along the right lateral edge, especially on the passenger side, possibly in or in the vicinity of a peripheral masking zone (opaque enamel, etc.) of the exterior glazing or even in an area with alternating 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 front car (or any other means of transport or an animal) is detected too close. When the car in front is far enough away (compliance with the safety distance), the LEDs are off.

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

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

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

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

If necessary, the windshield has a set of metallic wires, almost invisible, for example 50 μm which are placed on one side, for example on the side F3 side of the laminating interlayer (over the entire surface), in the form of lines. straight or not.

Being here in the clear of glass we prefer 3 transparent PCB boards.

Each PCB 3 is bonded with a transparent thermoplastic strip (rear) and thin with a thickness e3 of at most 0.15mm and better still less than 100pm and the same size as the PCB, strip bonded on the 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 laminating, each PCB 3 and the so-called rear transparent thermoplastic strip forms a pre-assembled element. The fabrication of the preassembled element will be described in more detail later.

The windshield further comprises two other electrically controllable surface-type devices, here in a 4 ’, 4” rectangular shape 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 clear glass.

A transparent thermoplastic strip called rear and thin with a thickness e'3 of at most 0.15mm and better at most of 100pm and of size identical to OLED, is and bonded to the surface of the OLED support (substrate of preferably flexible, in particular polyester, PET) and which is in full-surface adhesive contact with the face F2 called the contact face. Before laminating, the OLED screen and the rear transparent thermoplastic strip form a pre-assembled element. The fabrication of the preassembled element will be described in more detail later.

Before laminating, each 4, 4 ”device and the rear transparent thermoplastic strip form a pre-assembled element. The fabrication of the preassembled element will be described in more detail later.

It is also possible to provide a laminated touch button, whether or not illuminated, for controlling the OLEDS screens or other devices, etc. This capacitive switch for example can be preassembled with a plastic strip as mentioned above.

Alternatively, a luminous laminated roof can be produced in a similar manner with diodes and / or OLEDS, or QLEDS or TFEL for example providing ambient, decorative light or a reading light oriented towards the face F4.

On the front surface it is possible to use a collimating optic and preferably without a front plastic strip or laminating interlayer between the collimating optic 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 FIG. 1 by the more peripheral location of the three PCB 3 cards, which can be opaque (opaque support and / or opaque conductive tracks). The face F2 comprises a full masking frame in black enamel preferably and the face F4 14 (or the face F3) comprises a masking frame 72 in black enamel preferably, with openings 70 in line with the diodes 4.

In this embodiment, the front or rear assembly thermoplastic strip can be transparent (tinted, etc.) or opaque.

In addition, the 4 ’OLED screen at the bottom of the windshield is in the enameling area and 70 savings have been made on the screen.

Figure T 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 in Figure 1 by the location and type of signage.

The first set of diodes 4c, on a PCB-type support 30C, forms a triangle with if possible a central exclamation point. It therefore forms a danger signal.

The second and third sets of diodes 4a and 4b, each on their PCB-type support 30a and 30b, form arrows indicating when the flashing light (respectively left or right) is engaged.

These flashing repeaters may be visible from the outside (external signaling). You can move the left turn signal as far to the left as possible (if in the masking area opposite F2 with savings to the right of the diodes) in or split it and the right turn signal as far to the right as possible (if in the masking area opposite F2 with save at the right of the diodes or split it.

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

Before laminating, each PCB 30a, 30b, 30c and the thermoplastic strip form a preassembled element.

If in the clear of glass we prefer PCB boards 30a, 30b, 30c and thin transparent thermoplastic strips. We can plan to move them analogously to Figure 1a in a peripheral masking frame.

In addition, the 4 ”OLED screen in the upper and central peripheral position of the windshield is in the enameling zone 72 which is widened in the center and a savings 70 have been made at the right of the screen.

FIG. 1 ”is a schematic front view (side F1 or side 12) of a rear window with external light signal 100” in an embodiment of the invention.

In the central zone 13 ’, a third stop 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 flashing light 102 is formed with for example six diodes 4 emitting in yellow on the PCB 3 along the lateral edge in play, or else a signaling light 103 with for example six diodes 4 on the PCB 3 along the lower longitudinal edge in play.

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

Before laminating, each PCB 3 and the thermoplastic strip forms a preassembled element.

If in the clear of glass we prefer PCB 3 boards and transparent thin thermoplastic strips. We can plan to move them analogously to Figure 1a in a peripheral masking frame.

The telescope also comprises another electrocontrollable device of the surface type here of rectangular shape 4 ’, such as an OLED for example in the middle and along the lower longitudinal edge of the windshield. The OLED is for example transparent and in the clear of glass.

A transparent thermoplastic strip called rear and thin with a thickness e'3 of at most 0.15mm and better at most of 100pm and of size identical to OLED, is and bonded to the surface of the OLED support (substrate of preferably flexible, in particular polyester, PET) and which is in full-surface adhesive contact with the face F2 called the contact face. Before laminating, the OLED and the transparent rear thermoplastic strip form a pre-assembled element. Before laminating, the device 4, the rear transparent thermoplastic strip and forms a preassembled element.

Alternatively, one can similarly produce a laminated glazing forming a lateral glazing (fixed or opening) with an external light signaling such as a flashing repeater or even an advertising, informative or decorative display.

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

a first glazing 1, for example made of TSA glass and 2.1 mm thick, forming exterior glazing, preferably tinted, with first and second main faces 11, 12 respectively called face F1 - and face F2, and a wafer 10 a lamination interlayer 2 made of polymeric material, here made of PVB, preferably clear, of thickness e1 submillimeter preferably in particular between 0.2mm and 1m conventionally of about 0.38mm, for example a PVB sheet (RC41 from Solutia or 'Eastman) with a thickness of approximately 0.76mm or alternatively if necessary an acoustic PVB (three-layer or four-layer), for example with a thickness of approximately 0.81mm, whose side FB on side side F3 is optionally carrying a set of metal wires covering the surface (substantially), in particular facing the diode or diodes, a second glazing T, forming interior glazing, for example made of TSA or clear or extra-clear glass and 2.1mm 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 possibly coated with a functional layer (low emissivity etc.), the face F2 and the face F3 being the internal faces 11, 1T of the laminated glazing

- a set of inorganic light emitting diodes 4, which are surface mounted components (CMS or SMD in English), for example emitting in red on a support such as a printed circuit board called PCB 3 with a slice 34, the PCB assembly + diodes being of total thickness et2 <e1 and better with e1-et2 of at most 0.5mm and preferably from 0.1mm to 0.2mm, the diodes being of submillimetric thickness e2 often greater than 0 , 15mm and the PCB 3 of thickness e'2 of at most 0.15mm, for example from 50 to 100pm, with a so-called front face 30 facing the face F3 and a rear face 30 'against the face F2 or face 11, each diode having an emitting face emitting in the direction of the interior glazing T, and each diode having a wafer,

For each of the diodes, the lamination interlayer has a region 21 includes an opening here passing around the edge of the diode and in contact with the edge. Before the lamination, through holes were made on the single PVB sheet with a width slightly greater than the side of the diodes 4. During the lamination by creep, the PVB can come into contact with the diodes 4 without going between the front face and the face F3.

As a variant we use a PVB with blind holes or even we keep this sheet with through holes and we add a back sheet (between F3 and the perforated sheet called front) full surface (to insert other thicker elements for other functions etc) PVB or even PVB / functional PET / PVB. After laminating 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 0.2mm or at most 0.1mm.

The diodes 4 (with a single semiconductor chip here) are square in shape on the order of 5mm or less. A diode can be of the “chip on board” type or even very preferably a surface-mounted component (SMD in English) then comprising a peripheral envelope (often called “packaging”).

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

The laminating interlayer 2 is present between the face F3 and the front face of the PCB 3 on the entire front face of the PCB excluding diodes, in the laminated glazing. The laminating interlayer 22 is absent from the rear face 30 ’.

Before laminating, the PCB 3 is bonded with a thermoplastic strip 5 and thin with a thickness e3 of at most 0.15mm, in particular from 25 to 100pm, 40 to 70pm and even 50pm and of size identical to the PCB or slightly protruding as shown here from the edge 34, strip whose front face 50 is glued to the rear face 30 ′ of the card (oriented towards the face F3) and whose rear face 50 ′ is in full surface adhesive contact with the face F3 called contact face.

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

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

In particular, it is possible to choose as PVB tape without plasticizer the product "MOWITAL LP BF" from the company KURARAY with the thickness e3 as desired.

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 edge of the electronic component (and defining the edge of the diode), surrounding the semiconductor chip.

The envelope can correspond to the maximum thickness (height) e2 of the diode. The envelope is for example made of epoxy. A polymeric envelope can possibly settle (the final thickness after lamination can be less than the initial thickness) during lamination. The (polymeric) envelope may be opaque.

The envelope (monolithic or in two pieces) may comprise a part forming a base 42 carrying the chip and a part forming a flared reflector moving away from the base higher than the chip, and containing a protective resin and / 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 level of the "front" surface of the reflector.

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

The anode and cathode contacts on an insulated layer. The contacts are extended by "via holes" in the base up to areas of layers, one connected by a wire to the cathode

Figure 2 'is a schematic cross-sectional view of a laminated glazing glazed by diodes in an alternative embodiment of Figure 2 by the addition of a collimating lens 8 which is here a prismatic film 81 with its prisms contiguous on the outlet face side 80 and with a rear face 80 ′ on the front surface of diode 4, housed in a hole 21 in the PVB, film held by tabs 82 on the front face of the PCB support 3. FIG. 2a is a view of above the collimation optic which is here a prismatic film with its adjoining prisms 80 and a wafer 85. FIG. 2b is an overall view of the prismatic film with its adjoining prisms 80.

Examples of collimation optics such as a Fresnel lens or a prismatic film are described in 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 network are described in application WO2017 / 203175 (for example Figure 2’a to 2’c and Figure Ta to Tz).

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

It differs in that the plastic strip 5 is on the masking enamel on the face F2 12 and savings 72 ’at the diodes are made in the masking enamel 72 on the face F4 14.

For example, the front face is glued with 6 ’points of PVB glue before laminating.

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

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

The support 3 is here glued to the contact face 13 which is the face F3 by a thermplastic strip such as a thin and transparent PVB as already described in the previous figures.

In particular, the support extends beyond the PVB follows the slice by a part 51 and is folded by a part 52 opposite F4 14 and the strip 5 sticks to the edge and to the face F4. A connector 53 is connected to the end of the part 53.

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

It differs in that the support 3 is L-shaped with a diode zone 31 and a power supply zone 32 with an extension 33 protruding from the edge 10 'of the glazing T linked to the wires 9, 9' and partly masked by the enamel 7. The rear plastic strip 5 (shown for explanatory purposes) is of the same shape therefore in L. For example the PVB is set back 22 from the edge 10 '.

FIG. 5 is a front view showing a pre-assembly of the electrically controllable device 500 using the laminating interlayer and by contacting with point adhesive.

FIG. 5 shows the contacting point adhesive of a front face local thin plastic band 5 preferably transparent rear square or rectangular shape with a connecting face FL 20 'of a back sheet PVB 2 intended to be in contact with the contact face F2 of the glazing 1 (section 10 shown).

The diode support is rectangular in shape and protrudes from the edge. The front face of the plastic strip 5 is against the rear face of the diode support and the plastic strip protrudes from the edge 34.

Ad hoc adhesive contacting is by a network of punctual 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 are softened by local punctual heating .

FIG. 6 is a front view showing a preassembly of the electrically controllable device 600 using the lamination interlayer and by contacting with point adhesive.

The preassembly differs from Figure 5 in that the support is L-shaped, as is the thin, transparent plastic strip, preferably.

FIG. 7 is a front view showing a preassembly of the electrically controllable device 700 with a plastic strip and by contacting with point adhesive.

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

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

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

FIG. 7b is a front view showing a pre-assembly of the electrically controllable device 700b with a plastic strip and by contacting with point adhesive.

The preassembly differs from FIG. 7 in that the support is in a U shape, therefore with two openings in the glazing 33.33 ′ and the local thin plastic strip 5 of identical U shape.

FIG. 8 is a sectional view of the preassembly of the device and rear local plastic strip and laminating interlayer 800 before placing between the glass sheets and laminating.

The front face 50 of the thin and transparent plastic strip 5 at the rear is brought into punctual adhesive contact with the rear face 30 ′ of the support for the diodes 3 by a network of contacts 6 originating from local heating 7.

The front face 30 of the diode support is brought into punctual adhesive contact with the face 20 ′ of the PVB 2 provided with individual through holes 21 housing the diodes 4.

Alternatively it is a blind hole and even the PVB can be a PCB / PET / PVB assembly.

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

The front face 50 of the thin and transparent plastic strip 5 at the rear is brought into punctual adhesive contact with the face 20 ′ called the PVB bonding face 2 by a network of contacts 60a originating from local heating.

The front face 50 of the thin and transparent plastic strip 5 at the rear is optionally brought into punctual adhesive contact with the rear face 30 ′ of the support for the diodes 3 by a network of contacts 6 originating from local heating.

Optionally, the front face 30 of the diode support is brought into punctual adhesive contact with the face 20 ′ of the PVB 2 provided with individual blind holes 2 housing the diodes 4.

FIG. 9a shows a front view on the F1 side of a laminated glazing with an electrocontrollable device 900, for example surface, such as an OLED for a light function (possibly forming a pictogram) or an OLED screen. Figure 9b shows this glazing in section.

This could be, for example, a windshield with a pictogram-shaped OLED or an OLED 4 screen or a roof with an OLED. It can be building glazing.

Luminous and curved laminated glazing, comprising:

a first glazing 1, for example made of TSA glass and 2.1 mm thick, forming exterior glazing, preferably tinted, with first and second main faces 11, 12 respectively called face F1 - and face F2, and a wafer 1 a second glazing T, forming interior glazing for example in TSA or clear or extra-clear glass and 2.1mm thick or even 1.6mm or even less, with third and fourth main faces 13, 14 respectively called face F3 and face F4, the face F4 optionally coated with a functional layer (low emissivity, etc.), between F2 and F3 a lamination interlayer 2 made of polymer material, here in PVB, preferably clear, of thickness e1 submillimetric preferably in particular between 0.2mm and 1m conventionally around 0.38mm, for example formed from a first full sheet 2a and in adhesive contact with the face 13 F3 after lamination and a second perforated sheet PVB 2b with a r reserve 25 and on the first sheet in adhesive contact with the face 123 F2 and with the first sheet after laminating the side F2 and the side F3 being the internal faces 11, 1T of the laminated glazing

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

- glued to the OLED (support side or front surface of the electroluminesecent system) a thermoplastic strip, in particular PVB, without plasticizer with a thickness e3 of at most 0.3mm and the same size as the OLED, the rear side of the strip is in full surface adhesive contact with face F2 12

The thermoplastic strip is based on poly (vinyl butyral) (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and better still less than 5% by weight and in particular without plasticizer. In particular, it is possible to choose as PVB tape without plasticizer the product "MOWITAL LP BF" from the company KURARAY with the thickness e3 as desired.

The laminating interlayer is made of classic poly (vinyl butyral) (PVB). It can be acoustic, corner (for a head-up poster), composite PVB / PET functional / PVB. The full sheet in particular can be acoustic, in the corner (for a head-up poster). composite PVB / functional PET / PVB. The perforated sheet in particular can be tinted. Alternatively, a single PVB with a blind hole is used

Before laminating (and before placing between the two glazings), the plastic strip 5 is assembled with the OLED 4 by local heating giving a specific adhesive contact or by gluing (glue or double-sided) and possibly OLED 4 with the full sheet 2a for example by local heating.

Here the OLED 4 emits towards the F4 face (internal light) and the OLED is emitted through the support of OLED 3 (bottom emitting in English). So the plastic strip 5 is on the front surface of the OLED, on the electroluminescent system (with or without polymeric encapsulation).

Here the OLED 4 emits towards the F4 face (internal light) and the OLED is emitted from above (top emitting in English). Then the plastic strip is on the rear face of the support 3, therefore opposite the electroluminescent system (with or without polymeric encapsulation).

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

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

-the light is emitted on the F1 11 side face, for example for a light signaling from the rear window or a side window or even a windshield (flashing repeater etc) and in that the OLED 4 emerges from the perforated sheet 2b on the side F2 12.

Also to compensate for the difference in thickness H between the PVB 2b and the OLED 5 on the F2 side, a PVB 5a frame made of identical plastic material is around the edge of the OLED.

If H is large (at least 0.15mm for example) one can use several stepped frame bands.

As a variant, if H is <0.15 mm, the plastic strip 5 is chosen to protrude over 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 classic poly (vinyl butyral) (PVB). It can be acoustic, corner (for a head-up poster), composite PVB / PET functional / PVB. The full sheet in particular can be tinted, acoustic, in the corner (for a head-up poster). composite PVB / functional PET / PVB. The perforated sheet in particular can be tinted.

Figure 10 is a sectional view of the preassembly of electrically controllable device plastic strip and laminating 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 brought into punctual adhesive contact with the rear face 30 ′ of the support of the diodes 3 by a network of contacts 60 originating from local heating 7 creating softening and adhesion.

The front surface 30 of the OLED is optionally brought into point adhesive contact with the face of the full PVB sheet 2a by a network of contacts 60b from the same local heating 7.

The front face 50a of the plastic frame 5a is brought into adhesive contact with the face of the full PVB sheet 2a by a network of contacts 60a originating from local heating 7.

Then the preassembled element is placed between two glazing units, the free faces of the two sheets are in adhesive contact with the faces F2 and F3 after laminating and the free faces of the plastic strips 5, 5a are in adhesive contact with one of the faces F2. or F3 of your choice after leafing too.

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

Two plastic strips are preassembled, one of which is said rear strip 5 on the rear face of the support and for the other said front strip 5 'on the front surface of the device 4 (OLED etc.) and protruding on an interlayer laminating sheet (PVB , PVb composite) with a reserve housing the electrocontrollable system.

The front face 50 of the rear plastic strip 5 is optionally brought into punctual adhesive contact with the rear face 30 ′ of the support of the diodes 3 by a network of punctual contacts 60b originating from local heating 7 creating a softening and an adhesion

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

The front face 50 ’of the front plastic strip 5’ is brought into punctual adhesive contact with the other face 20 ′ of PVB 2 by a network of punctual contacts 60 ″ from local heating 7 creating softening and adhesion. The same heating on side 20 may suffice on side 20 ’

Then the preassembled element is placed between two glazing units, the faces 20 ’and 20’ are in adhesive contact with the faces F2 and F3 after laminating and the free faces 10 of the plastic strips 5, 5 ’also.

Claims (20)

1. Method for manufacturing glazing with an electrically controllable device, in particular vehicle glazing (100 to 900 ’) comprising a laminated glazing 5 comprising: - a first glazing (1) transparent, with first and second main faces said face F1 and F2 (11,12) - a second glazing (T), transparent, with third and fourth main faces (13, 14) respectively called face F3 and F4 10 - 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, preferably at least the one of the first or second glazing being made of mineral glass and the laminated glazing comprising between the faces F2 and F3: 15 - an electrocontrollable device (4, 4 ’, 4”), comprising a support (3), of width W2 of at most 1m, of thickness e2 in particular submillitric, support with a front face (30), a rear face (30 ') and a wafer (34), of thickness e2, the front face being load-bearing in an area said functional area (31) of an electrically controllable system, of thickness e'2 preferably submillimetric, and the front face 20 possibly comprising an electrical supply zone (32, 33) adjacent to the functional zone, the electrocontrollable device having a surface area less than the laminating interlayer, the electrocontrollable device having a front surface on the side of the electrocontrollable system and the glazing comprising 25 -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 F2 or F3, then called contact face, the connecting element having a surface area less than the lamination interlayer, the method comprising the following steps: 30 - before lamination, the supply of a preassembled element comprising the electrically controllable device, said connecting element and possibly at least one sheet of the lamination interlayer, said assembly sheet, 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 35 support, and the plastic strip having a free main face F ', opposite to the connecting face F _L the bonding face F _L being in adhesive contact or glued 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 opposite a zone ZA of one of the main faces of the assembly sheet, the protruding zone ZD is in adhesive or bonded contact with zone ZA - placing said preassembled element between the first and second glazing, - And the laminating step with said preassembled element comprising a vacuum, even a pressurization, and a heating, the laminating step leading to: - the adhesive contacting of the free face F _L with the contact face. 2. Method for manufacturing a glazing with an electrically controllable device according to the preceding claim, characterized in that the 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 transparent strip covering the rear face at least opposite to said functional area. 3. Method of manufacturing a glazing with an 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 connection element with the support, the connection face F _L being brought into adhesive contact or bonded with the rear face, connection face F _L is brought into adhesive contact in full surface or point with the rear face (30 ') punctual by a network of spaced apart adhesive contacts or is glued in full surface or punctually with the bitter side via a network of spaced apart adhesive zones and / or and / or b) assembly of the connecting element with the laminating interlayer, the protruding zone ZD is brought into point or full surface adhesive contact with the zone ZA by a network of spaced apart adhesive contacts or the bonding face is bonded via a network of point or full adhesive zones facing zone ZA. 4. A method of manufacturing a glazing with an electrically controllable device according to claim 3 characterized in that the adhesive contact is by softening the plastic strip. 5. A method of manufacturing a glazing with an electrically controllable device according to claim 4 characterized in that the adhesive contact is punctual and by local heating and possibly also by pressure, in particular heating by induction, by hot air, by radiation (laser ). 6. Method of manufacturing a glazing with an electrically controllable device according to one of claims 3 to 5 characterized in that during said preassembly with the connecting element, the electrically controllable device is on a first sheet of the laminating interlayer, and a second sheet of the laminating interlayer, 5 in particular the assembly sheet, is on the first sheet, the local heating leads to a punctual contacting of the first sheet with the second sheet. 7. A method of manufacturing a glazing with an electrically controllable device according to one of claims 3 to 6 characterized in that during said preassembly with the connecting element, the front surface of the electrically controllable device is on a 10 first sheet of the lamination interlayer, in particular the assembly sheet, local heating leads to punctual 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 with an electrically controllable device according to one of the preceding claims characterized in that the plastic strip and said 15 laminating interlayer are spaced apart before laminating and after laminating the plastic strip and said laminating interlayer are in continuous contact, without leaving any space between the rear face and contact face. 9. Method for manufacturing a glazing with an electrically controllable device according to one of the preceding claims, characterized in that the plastic strip is 20 thermoplastic, based on poly (vinyl butyral) (PVB) containing less than 15% by weight of plasticizers, preferably less than 10% by weight and better still less than 5% by weight and in particular without plasticizer, and said interlayer laminating is preferably based on poly (vinyl butyral) (PVB). 10. A method of manufacturing a glazing with an electrically controllable device according to one of claims 1 to 9 characterized in that before the placement of said element preassembled with the connecting element, the lamination interlayer comprises a sheet said before , which is optionally said assembly sheet, with a main face Fx (20 ') placed against the front surface of the electrically controllable device in particular the front face of the support, and the main face Fx (20') possibly comprising said zone ZA, and after the lamination, the front sheet is in adhesive contact with the front surface of the electrically controllable device, in particular the front face of the support. 11. A method of manufacturing a glazing with an 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 or through hole (21) of width W1 at most 35 20mm housing the so-called discrete electrocontrollable system, in particular an (opto) electronic component, such as a photodiode or an inorganic diode, of width W'2 of at most 20mm and with e'2> 0.15mm 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. 12. A method of manufacturing a glazing with an electrically controllable device according to one of claims 1 to 11 characterized in that before placing said preassembled element with said connecting element, the lamination interlayer comprises a perforated sheet thus comprising a savings (25) housing all or part of the electrically controllable system and the support, the perforated sheet having the main face Fx which is free and possibly comprising said zone ZA and possibly including zone Z'A, the plastic strip 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 0.3mm. 13. Method for manufacturing a glazing with an electrically controllable device according to the preceding claim, characterized in that before laminating with the preassembled element comprising the connecting element, the electrically controllable device emerges from the perforated sheet, the electrically controllable device and the main face Fx are spaced apart by a non-zero height H2 greater than e2, H2 being at most 0.3mm, the method comprises positioning an additional plastic strip (5a) forming a frame on the edge of the thickness of the electrically controllable device Ex 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 a connecting face FC, possibly the strip additional plastic has a single strip or a plurality of plastic strips in steps and Ex is then the total thickness of the plastic strips, and by l ’Laminating step, said other free face of the additional plastic strip is brought into adhesive contact with the contact face. 14. Glazing with an electrically controllable device in particular obtained according to one of the preceding claims comprising a laminated glazing comprising: - a first glazing (1) transparent, with first and second main faces said face F1 and F2 (11, 12) - a second glazing (T), transparent, with third and fourth main faces (13, 14) respectively called face F3 and F4 - a lamination interlayer (2) made 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, preferably at least one of the first or second glazing being in mineral glass and the laminated glazing comprising between the faces F2 and F3: - an electrically controllable device (4), comprising a support (3), of width W2 at most 1m, of thickness e2 in particular submillimetric, support with a front face (30), a bitter face (30 ') and a wafer (34), the front face carrying in a zone called the functional zone (31) of an electrocontrollable system (4), of thickness e'2 preferably submillimetric, and the front face possibly comprising an electric supply zone ( 32,33) adjacent to the functional area, the electrically controllable device having a surface area less 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 the contact face, the connecting element having an area less than the lamination interlayer. 15. Glazing with an electrically controllable device, in particular for a vehicle according to the preceding claim, characterized in that the plastic strip is thermoplastic, based on or even made of poly (vinyl butyral) (PVB) containing less than 15% by weight of plasticizers, preferably less than 10 % by weight and better still less than 10% by weight and in particular without plasticizer, and said laminating interlayer is based on poly (vinyl butyral) (PVB). 16. Glazing with an electrically controllable device, in particular a vehicle according to one of claims 14 or 15 characterized in that said plastic strip protrudes from the rear face on at least one side and even on two sides, is in adhesive contact with the interlayer of foliation. 17. Glazing with an electrocontrollable device, in particular for a vehicle according to one of claims 14 to 16, characterized in that the electrocontrollable system is chosen from: - a capacitive or inductive control switch, an antenna - one or more (opto) electronic 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 laminating interlayer are in adhesive contact with the front face of the support, 18. Glazing with an electrically controllable device, in particular a vehicle according to one of claims 14 to 17, characterized in that the system is surface and is chosen from: -a surface light system, such as an organic OLED light-emitting system, 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 protrudes from the support and in adhesive contact with the lamination interlayer and is preferably in adhesive contact with the front surface of the support 19. Glazing with an electrically controllable device, in particular for a vehicle according to one of claims 5 to 18, characterized in that the laminating interlayer is made of poly (vinyl butyral) (PVB), in particular PVB with a hole or reserve comprising the electrically controllable device. , eventually -acoustics in particular for a windshield or a vehicle roof and / or in a corner in particular for a windshield, 10-possibly with metallic wires or alternatively forming a composite PVB / functional plastic film or first PVB / functional plastic film / second PVB, the functional plastic film, preferably transparent, such as a polyester, a PET, being a carrier of a functional layer, in particular electrically conductive, in particular PVB with a blind hole or reserve 15 in the first PVB. 20. Vehicle comprising at least one glazing with electrically controllable device according to any one of the preceding claims for glazing, in particular windshield, roof, side glazing, rear window.