CPC H05B 3/03 (2013.01) [F21S 45/60 (2018.01); H05B 3/84 (2013.01); H05B 3/06 (2013.01); H05B 2203/016 (2013.01)] | 17 Claims |
1. An electrical connecting portion for a device with a heating function, comprising:
a substrate made of a light-transmittable material and including a front face and a rear face;
two substantially parallel electrically conductive coating layers respectively disposed on the front face of the substrate; and
two substantially parallel copper layers respectively disposed on the two substantially parallel electrically conductive coating layers, wherein each of the two substantially parallel copper layers includes at least one first through-hole extending in a front-rear direction corresponding to the substrate; wherein each of the two substantially parallel electrically conductive coating layers substantially covers a respective one of the two substantially parallel copper layers and wherein each of the two substantially parallel electrically conductive coating layers substantially fills the at least one first through-hole of the respective one of the two substantially parallel copper layers.
|