The result is expressed as a method for producing a conductive layer in a signal transmission substrate. The method comprises the sewing of conductive yarn in sheet material with an insulating properties, so that, by use of the conductive yarn a plurality of low resistance areas in a formed by the sheet-like material of high resistance region, with the yarn from a terminal point of a previously sewn low resistance region to a starting point of a low resistance region to be sewn is moved, wherein the steps of the sewing and of the moving be repeated a plurality of low resistance regions in the high resistance region, and wherein in the conductive layer is a plurality of holes is formed by punching, so that an electrical component, the at least at one of the plurality of holes is made, in which a signal between adjacent ones of said plurality of regions of low resistance to transmit.
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