Abstract: A process for improving the solderability of a layer of a silver frit burnt onto a glass pane and a current connecting element wherein a layer of enamel is disposed and the surface of soldering and the glass pane. According to the process the surface is treated with a fluorine containing etching agent prior to soldering. The fluorine containing etching agent may be an aqueous solution of an acid fluoride, such as ammonium hydrogen fluoride or alkali hydrogen fluoride.

Abstract: An electrically heated glass pane includes a plurality of heating conductors (2) comprising a family of parallel conductors extending between a pair of power supply conductors (3) both disposed on and burnt-in a surface of a glass pane (1). A strip (4), of non-conductive material, covers conductors (3) and extends laterally from the edges of the conductors. The conductors (2) merge into the conductors (3) at a transitional region (7) broadened by an increasing flare so that the cross section of the region, determining the electrical resistance, is greater than the cross section of the conductors (2) providing resistive heating. A layer (12) which covers the same area as the strip (4) may be disposed below each conductor (3), directly on the surface of the glass pane (1). An opening (16) is recessed in layer (12), so that the conductors (3) are connected directly with the surface of glass pane (1).