CIRCUIT CARRIER AND METHOD

1 . A circuit carrier for at least one electrical component, comprising:

a metal substrate layer,

a first electrical insulation layer arranged on the metal substrate layer,

a second electrical insulation layer arranged on the first insulation layer, and

an electrically conductive layer, arranged on the second electrical insulation layer, having at least one conductor track for electrically connecting the at least one electrical component, wherein

at least one of the two electrical insulation layers is colored in such a way that the two electrical insulation layers have different colors.

2 . The circuit carrier as claimed in claim 1 , wherein at least one of the two electrical insulation layers is colored in such a way that the two electrical insulation layers are recognizable as two distinct insulation layers at least in a cross section, in particular a micro section of the circuit carrier due to their different colors.

3 . The circuit carrier as claimed in claim 2 , wherein at least one of the two insulation layers is colored in such a way that the two distinct insulation layers are recognizable with the naked eye.

4 . The circuit carrier as claimed in claim 1 , wherein the electrical insulation layers are colored using varicolored particles.

5 . The circuit carrier as claimed in claim 1 , wherein at least one of the two electrical insulation layers is colored in such a way that the color of the colored insulation layer is in a range visible to the human eye.

6 . The circuit carrier as claimed in claim 1 , furthermore comprising:

a further, in particular third electrical insulation layer, which is arranged on the electrically conductive layer,

a further, in particular fourth electrical insulation layer, which is arranged on the third insulation layer, and

a further, in particular second electrically conductive layer, which is arranged on the fourth electrical insulation layer and comprises at least one further electrical conductor track for electrically connecting the at least one electrical component.

7 . The circuit carrier as claimed in claim 6 , wherein the third insulation layer and/or the fourth insulation layer are/is colored in such a way that the two electrical insulation layers have different colors.

8 . A method for producing a circuit carrier for at least one electrical component ( 22 ), comprising:

providing a metal substrate layer,

applying a first electrical insulation layer to the metal substrate layer,

applying a second electrical insulation layer to the first electrical insulation layer, and

applying an electrically conductive layer to the second electrical insulation layer, wherein the electrically conductive layer comprises at least one conductor track for electrically connecting the at least one electrical component, and wherein

at least one of the two electrical insulation layers is colored in such a way that the two electrical insulation layers have different colors.

9 . The method as claimed in claim 8 , wherein the coloration takes place before the application, during the application, or after the application of the respective electrical insulation layer.

10 . The method as claimed in claim 8 , wherein the coloration takes place in such a way that the two insulation layers are recognizable as two distinct insulation layers at least in a cross section, in particular a micro section, of the circuit carrier due to their different colors.

11 . The method as claimed in claim 8 , furthermore comprising:

applying a further, in particular third electrical insulation layer to the electrically conductive layer,

applying a further, in particular fourth electrical insulation layer to the third insulation layer,

applying a further, in particular second electrically conductive layer having a conductor track for electrically connecting the at least one electrical component to the fourth electrical insulation layer, and

coloring the third and/or fourth insulation layer in such a way that the two electrical insulation layers have different colors.

12 . A method for ascertaining a number of insulation layers in a circuit carrier, in particular in a circuit carrier as claimed in claim 1 , comprising:

preparing a cross section, in particular a micro section, of the circuit carrier, and

ascertaining the number of insulation layers in the circuit carrier on the basis of different colors of the insulation layers.

13 . The method as claimed in claim 12 , wherein the preparation of a micro section of the circuit carrier comprises:

exposing a cross-sectional surface, in particular a full cross section of the circuit carrier, and

preparing the cross-sectional surface to ascertain the number of insulation layers.

14 . The method as claimed in claim 12 , wherein to ascertain the number of insulation layers in the circuit carrier, the circuit carrier or at least one insulation layer of the circuit carrier is colored.

15 . The method as claimed in claim 14 , wherein the coloration takes place before or after the preparation of the cross section or micro section.

16 . The method as claimed in claim 13 , wherein to ascertain the number of insulation layers in the circuit carrier, the circuit carrier or at least one insulation layer of the circuit carrier is colored.

17 . The method as claimed in claim 9 , wherein the coloration takes place in such a way that the two insulation layers are recognizable as two distinct insulation layers at least in a cross section, in particular a micro section, of the circuit carrier due to their different colors.