CPC H05B 3/86 (2013.01) [B32B 15/09 (2013.01); B32B 15/20 (2013.01); B32B 17/10036 (2013.01); B32B 17/10385 (2013.01); B32B 17/10761 (2013.01); B32B 27/36 (2013.01); B32B 37/02 (2013.01); B32B 37/24 (2013.01); H05B 3/36 (2013.01); B32B 2037/243 (2013.01); B32B 2250/40 (2013.01); B32B 2255/06 (2013.01); B32B 2255/26 (2013.01); B32B 2311/12 (2013.01); B32B 2329/06 (2013.01); B32B 2367/00 (2013.01); B32B 2605/006 (2013.01); H05B 2203/002 (2013.01)] | 22 Claims |
1. A heating film comprising:
a transparent substrate comprising an attachment enhancement layer on directly at least one surface of the transparent substrate;
a coating layer provided on the transparent substrate and having a refractive index of 1.450 to 1.485;
a metal foil pattern provided on the coating layer; and
a blackening layer pattern on the metal foil pattern,
wherein a ten-point average roughness (Rz) of a surface of the metal foil pattern, with the coating layer, is more than 0.9 μm,
wherein the blackening layer pattern comprises selenium-based materials,
wherein the transparent substrate comprises one or more materials selected from polyethylene terephthalate (PET), a cyclic olefin polymer (COP), polyethylene naphthalate (PEN), polyethersulfone (PES), polycarbonate (PC), and acetyl celluloid,
wherein the transparent substrate has a thickness of 25 μm to 100 μm, and
wherein the attachment enhancement layer comprises one or more oxides selected from the group consisting of NbO, NbO2, Nb8O19, Nb16O38, Nb12O29, and Nb47O116,
wherein a thickness of the attachment enhancement layer is 1 nm to 5 nm.
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