Patent ID: 7087485

Claim:
A method for fabricating patterned ceramic layers on areas of a relief that are arranged essentially perpendicular to a substrate surface, comprising: providing a semiconductor substrate; forming relief structures which are trench structures formed within a top side of the substrate, wherein internal areas are arranged essentially perpendicular to the top side of the substrate; filling the relief structures with a resist in physical contact with the substrate within the trench structures and subsequently isotropically etching the resist to remove the resist to a relief depth, wherein a resist layer is obtained; depositing a ceramic layer synthesized from a ceramic material by means of a low temperature ALD method, wherein the low temperature ALD method is performed at a temperature lower than a softening temperature of the resist; anisotropic etching of the ceramic layer, wherein the ceramic layer remains at the areas arranged perpendicular to the top side of the substrate, and wherein a top side of the resist layer situated below the ceramic layer is at least partially uncovered; and subsequently removing the resist layer.