HEATABLE VEHICLE GLAZING
A vehicle glazing having a first pane and a second pane connected via a thermoplastic intermediate layer. The second pane has an electrically conductive functional layer arranged on an internal surface of the second pane facing the thermoplastic intermediate layer. A first area of the second pane is a test area with a central field of vision, and a second area of the second pane is a roof area with a curvature, and the second area is electrically heatable. The second area has a heating element with two bus bars and at least a portion of the electrically conductive functional layer such that a current flows through the electrically conductive functional layer when an electrical voltage is applied to the bus bars. The first area is electrically insulted from the second area by a third area.
1 - 15 . (canceled)
16 . A vehicle glazing, comprising:
a first pane and a second pane connected via a thermoplastic intermediate layer,
an electrically conductive functional layer arranged on an internal surface of the second pane facing the thermoplastic intermediate layer,
a first area of the second pane, and
a second area of the second pane, the second area being electrically heatable,
wherein:
the first area is a test area with a central field of vision,
the second area is a roof area with a curvature,
the second area has a heating element comprising two bus bars and at least a portion of the electrically conductive functional layer, such that a current flows through the electrically conductive functional layer when an electrical voltage is applied to the two bus bars, and
the first area is electrically insulted from the second area by a third area.
17 . The vehicle glazing according to claim 16 , wherein the vehicle glazing is a panoramic pane.
18 . The vehicle glazing according to claim 16 , wherein the second area is arranged in an upper sub-area of the vehicle glazing.
19 . The vehicle glazing according to claim 16 , wherein the electrically conductive functional layer is transparent.
20 . The vehicle glazing according to claim 16 , wherein the bus bars extend substantially in a longitudinal direction of the vehicle glazing.
21 . The vehicle glazing according to claim 16 , wherein the electrically conductive functional layer contains at least one metallic layer.
22 . The vehicle glazing according to claim 21 , wherein the at least one metallic layer is a silver layer.
23 . The vehicle glazing according to claim 16 , wherein the first area comprises at least a portion of the electrically conductive functional layer, and the portion of the electrically conductive functional layer in the first area reflects light in an infrared range.
24 . The vehicle glazing according to claim 16 , wherein the third area is an insulation line.
25 . The vehicle glazing according to claim 16 , wherein the third area is arranged orthogonally between two side edges of the vehicle glazing.
26 . The vehicle glazing according to claim 16 , wherein the third area has a width of 5 μm to 500 μm.
27 . The vehicle glazing according to claim 26 , wherein the third area has a width of 20 μm to 200 μm.
28 . The vehicle glazing according to claim 16 , wherein the intermediate layer has a tinted or coloured area.
29 . The vehicle glazing according to claim 16 , wherein at least one of the first pane and the second pane has an opaque cover print in an edge area of the vehicle glazing.
30 . A method for producing a vehicle glazing comprising the steps of:
providing a first pane and a second pane, the second pane having a first area and a second area,
applying an electrically conductive functional layer to an internal surface of the second pane,
removing a portion of the electrically conductive functional layer to form a third area of the second pane, the third area electrically insulating the first area from the second area,
applying two bus bars within the second area, which electrically contact the electrically conductive functional layer such that a current flows through the electrically conductive functional layer within the second area when an electrical voltage is applied to the two bus bars,
providing a thermoplastic intermediate layer having a tinted and/or coloured area, the thermoplastic intermediate layer being at least as large as the second area,
forming a stack of the first pane, the second pane and the thermoplastic intermediate layer in between, such that the internal surface of the second pane faces the thermoplastic intermediate layer, and the tinted and/or coloured area of the intermediate layer covers the second area,
connecting the first pane, the second pane and the thermoplastic intermediate layer under an action of at least one of: heat, vacuum and pressure.
31 . The method according to claim 30 , wherein the electrically conductive functional layer is removed by means of laser decoating, mechanical decoating or removal of a masking attached during application of the electrically conductive functional layer.
32 . A vehicle comprising the vehicle glazing according to claim 16 , the vehicle being a transport for traffic on land, in air, or on water.
33 . The vehicle according to claim 32 , wherein the vehicle is selected from the group consisting of a train, a ship, or a motor vehicle.
34 . The vehicle according to claim 32 , wherein the vehicle glazing is a windscreen or a rear pane.