Manufacturing method of a rear window for vehicles provided with a heater-integrated antenna

A process for manufacturing a rear window of a vehicle, the process comprising:

• forming a glass plate with an external side adapted to being directed toward an exterior of the vehicle and an internal side adapted to being directed toward an interior of the vehicle;
• applying heat from a heater on the internal side of the glass plate, the heater having a pair of busbars electrically connected to a positive pole and a negative pole of a battery of the vehicle, the heater having a plurality of horizontal heating lines connecting the pair of busbars;
• and
• applying antenna traces by spray-coating on the internal side of the glass plate, the spray-coating comprising:
• preparing a printing ink having transparent nanowires;
• preparing the internal side of the glass plate by cleaning or plasma activation;
• positioning and aligning a printing mask on the internal side of the glass plate;
• spray-coating the printing ink onto the printing mask and the internal side of the glass plate so as to directly trace the antenna traces;
• and
• post-treating the glass plate thermally or optically.