| 摘要 |
PURPOSE:To minimize the structural restrictions of the titled unit using a heating element substrate having thermally and electrically satisfactory conductive, i.e. a metal substrate. CONSTITUTION:A heating element substrate 1 is substrate on which an insulative glazed layer 1d is formed. The surface exposed part 1b of the first material substrate is constituted at the end of the substrate, and the surface exposed part 1c of the second metal substrate at the end of the substrate. A common electrode 3, covering the surface exposed part 1b of the first substrate, is formed in such a way that the substrate 1a, the common electrode 3 and a plurality of heating elements are electrically connected. On the surface exposed part 1c of the second metal substrate, the metal substrate 1a and a lead wire 7 are electrically connected at a connection processing part for both the lead wire 7 and the common electrode 3. Under the above-mentioned constitution, the heating element substrate itself can be used as a common electrode, thus being able to shorten the distance between the heating element 2 and the substrate end. |
