| 摘要 |
PURPOSE:To uniformly generate a heat from the whole heat generating surface by giving a surface resistance value according to the change of distance between electrodes of a transparent face heating element in which a pair of facing electrodes are not parallel to each other to a transparent conductive film. CONSTITUTION:The thickness of a transparent conductive film is changed according to the distance between electrodes to change the surface resistance value. Namely, the transparent conductive film is thinned where the distance between electrodes is long, and thickened where the distance between electrodes is short. When the distance between electrodes is L cm and the surface resistance value of the transparent conductor is R (OMEGA/opening), the surface resistance value R of the part of the distance L is regulated according to the distance L between electrodes to satisfy the value of R=A/L<2> (wherein A is a constant determined by applied voltage). The surface resistance is changed in the longitudinal direction of the band electrode from side edge to side edge on the both sides having no pair of electrodes, but not changed in the direction along the distance between electrodes. |
