▎ 摘　　要

NOVELTY - The film has a base layer (10) provided with a dielectric property. A resistance layer (20) is provided with surface resistivity between 60 and 150 Ohm per square, and mounted on the base layer. An electrode layer (30) is provided with an electrode circuit pattern, which is formed by a mesh crossed with conductive wires. The electrode circuit pattern is electrically connected with a local area of the resistance layer. A protection layer (40) is provided with a dielectric property, and completely covers the electrode layer and the resistance layer. An auxiliary electrode layer is provided with an auxiliary electrode circuit pattern formed by the mesh crossed with the conductive wires. USE - Transparent heating film for use in windshields of vehicles for defogging. ADVANTAGE - The film can completely planarly and rapidly heat up. The film adjusts heat generated in local areas of the resistance layer by electrically connecting local areas with electrode circuit patterns with different mesh densities and auxiliary electrode patterns. The film reduces thermal conducting time, and improves defogging efficiency, so that reduced equivalent impedance can reduce heat by electrothermal conversion. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a transparent heating film. Base layer (10) Resistance layer (20) Electrode layer (30) Protection layer (40)