Laminated glazing with electrically controllable optical properties for a vehicle equipped with a semitransparent reflective printed inscription on the exterior face of a vehicle

A method for manufacturing a laminated glazing for vehicle having electrically controllable optical properties, the laminated glazing being provided with an inscription and comprising an interior glass sheet and an exterior glass sheet, the exterior glass sheet comprising an outer face forming face F1 of the laminated glazing and an inner face forming face F2 of the laminated glazing, the interior glass sheet comprising an inner face forming face F3 of the laminated glazing and an outer face forming face F4 of the laminated glazing, and comprising, between the inner faces F3 and F2 of the interior and exterior glass sheets, an interlayer comprising at least two outer layers and in a material selected from polyvinyl butyral (PVB), polyethylene vinyl acetate (EVA) and polyurethane (PU) and mixtures thereof, said outer layers being joined by a functional element of liquid crystals dispersed in a polymer matrix, said functional element comprising a liquid crystal active layer between two electrically conductive layers, the two electrically conductive layers being disposed between two carrier films, wherein the inscription consists of a semi-transparent reflective layer and said inscription is printed on the exterior glass sheet on the outer face F1, the method comprising:

• a) providing the interior glass sheet and the exterior glass sheet,
• b) printing the inscription consisting of the semi-transparent reflective layer on the outer face F1 of the exterior glass sheet,
• c) curing said printed glass sheet by heat treatment in air at a temperature between 500° C. and 700° C.,
• d) carrying out the forming of said interior and exterior glass sheets together or separately by heat treatment,
• e) separating the formed interior and exterior glass sheets,
• f) arranging between inner faces F3, F2 of the formed interior glass sheet and the formed exterior glass sheet provided with the printed inscription, the interlayer comprising:
• a first outer layer of the at least two outer layers in the material selected from polyvinyl butyral (PVB), polyethylene vinyl acetate (EVA) and polyurethane (PU) and mixtures thereof,
• the functional element comprising the liquid crystal active layer between two electrically conductive layers, the two electrically conductive layers being disposed between two carrier films, and
• a second outer layer of the at least two outer layers in the material selected from polyvinyl butyral (PVB), polyethylene vinyl acetate (EVA) and polyurethane (PU) and mixtures thereof,
• g) assembling the interior and exterior glass sheets and the interlayer by lamination to form a laminated glazing, and
• h) degassing by autoclaving said laminated glazing.