Curved surface heating device and method for forming three-dimensional patterns

A curved surface heating device, comprising:

• a protective layer having a curved panel shape and dielectric properties;
• a conductive layer formed on one side of the protective layer and having electrothermal properties, with a resistance value within 300Ω and a current withstand value of less than 20 A;
• the conductive layer comprising a high-conductivity material including a conductive metal or a carbon-based material, wherein a volume percentage of the conductive metal in the high-conductivity material is between 30% and 60%, and a volume percentage of the carbon-based material in the high-conductivity material is between 30% and 60%, and a thickness of the conductive layer is within 50 micrometers (μm);
• a temperature control insulation layer on one side of the conductive layer opposite to the protective layer and comprising the carbon-based material in a volume percentage between 30% and 60%, and the conductive metal, with a volume percentage between 10% and 25%;
• and
• at least one conductive wire electrically connected to the temperature control insulation layer;
• wherein the at least one conductive wire maintains a temperature between 30° C. and 100° C., and the conductive metal of the temperature control insulation layer receives an electric current from the at least one conductive wire and transmits the current to the conductive layer.