Patent ID: 6958285

Claim:
A fabrication method comprising: forming a structure that has a plurality of substrates bonded together; wherein the plurality of substrates include a first substrate which comprises a semiconductor substrate and which has a first side, the semiconductor substrate having an opening at the first side of the first substrate, wherein the first substrate comprises circuitry which comprises a conductor in the opening; wherein the structure further comprises a component which includes at least a portion of the first substrate and/or is attached to the first substrate, and at least a portion of the component is located at a sufface of the first substrate on the first side of the first substrate; wherein the component is to co-operate with circuitry in the first substrate so as to perform an optical function and/or a perform an optical function and/or a magnetic function and/or to move and/or deform; wherein the plurality of substrates comprise a second substrate bonded to the first side of the first substrate, wherein the second substrate does not contain any electronic circuitry coupled to the circuitry in the first substrate; wherein the method comprises removing material from the structure so that the conductor becomes exposed on a second side of the first substrate.