SHEET GLASS EQUIPPED WITH AN ELECTRICALLY CONDUCTIVE DEVICE AND HAVING HIGH RESISTANCE TO THERMAL CYCLING Russian patent published in 2020 - IPC B32B17/06 C03C17/06 H05K3/34 

FIELD: automotive glazing with electric function.

SUBSTANCE: invention relates to automotive glazing having electric function, such as heated or anti-icing glass or glass equipped with antennas, and to sheet glass equipped with electroconductive device and having higher resistance to thermal cycling. Sheet glass consists of at least one substrate, one part of which comprises electroconductive element, where conductive element comprises connector, made of chromium steel, wherein this connector is soldered by means of solder based on tin, silver and copper to electrically conductive path, which is formed by firing silver paste, consisting of mixture of silver powder and glass frit, and has specific electric resistance, measured at 25 °C, not more than 3.5 microohm·cm and porosity of less than 20 %, wherein the porosity is measured by scanning electron microscopy on the cross-section of the substrate portion containing said electrically conductive path and pre-polished by ion etching.

EFFECT: invention enables to obtain sheet glass which withstands a thermocycling test at 60 consecutive cycles, during which temperature varies from −40 °C to +105 °C at voltage 14 B in phases of temperature increase.

19 cl, 3 dwg, 1 tbl, 3 ex