▎ 摘　　要

NOVELTY - Multifunctional positive temperature coefficient (PTC) graphene heating skin, comprises a surface layer (1), a pattern layer (2), an electrode layer (3), a graphene heating layer (4), a capacitance touch layer (5), a pressure layer (6), a second control electrode layer and a protective layer (8). The pattern layer is adhered on the surface layer, and the pattern layer comprises a light shielding area and a light transmitting area. The light transmitting areas are patterned on the pattern layers. The pattern comprises a heat-reducing shift pattern, three gear indicating patterns and a heating up-shift pattern. The electrode layer is coated on the shading area of the pattern layer, and includes a heating electrode and a first control electrode. The heat electrode includes a heat electrode main line and multiple heating electrode positive lines. USE - Multifunctional positive temperature coefficient (PTC) graphene heating skin. ADVANTAGE - The multifunctional PTC graphene heating skin integrates touch and pressure, displaying and heating together, where the touch function is combined with the pressure function, and integrates the PTC electric heating function, so that the winter vehicle interior also provides comfortable hand feeling temperature for the user, which is very practical. The light transmission display function also improves atmosphere in the vehicle. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the multifunctional PTC graphene heating skin, which involves: arranging pattern layer on a surface layer by printing, hot stamping and transfer printing, arranging no printing material at the light-transmitting area, printing shading material at the shading area, where shape of the light-transmitting area is the pattern on the pattern layer, and the pattern comprises a heating and gear-reducing pattern, three gear indication patterns and a heating and gear-increasing pattern; coating low-temperature curing low-sheet-resistance stretchable conductive silver paste on the shading area of the pattern layer, and forming an electrode layer, after curing, where electrode layer comprises a heating electrode and a first control electrode; printing graphene heating ink in the area, where the heating electrode on the shading area of the pattern layer is located, and drying to form a graphene heating layer; printing capacitance ink on a first control electrode area on a shading area of the pattern layer, and drying to form a capacitance touch layer; printing pressure ink on a shading area of the pattern layer and the electrode layer and drying to form a pressure layer; coating low-temperature-cured low-sheet-resistance stretchable conductive silver paste on the pressure layer, and forming a second control electrode layer after curing; coating transparent insulating protective printing ink or varnish on the surface layer, drying to form a protective layer, where pattern layer, the electrode layer, the graphene heating layer, the capacitance touch layer, the pressure layer and the second control electrode layer are completely coated by the protective layer; cutting the multifunctional PTC graphene heating skin which finishes the procedures in a die cutting mode to form a product. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of multifunctional positive temperature coefficient graphene heating skin. 1Surface layer 2Pattern layer 3Electrode layer 4Graphene heating layer 5Capacitance touch layer 6Pressure layer 7Second control electrode layer 8Protective layer