Patent ID: 7160791
Filing Date: 2007-01-09
Classification: G02B,H01L

Abstract:
1. A method for forming patterned silicon materials, the method comprising: providing a silicon substrate having a first surface region and a second surface region, a thickness of material defined between the first surface region and the second surface region; protecting first selected regions on the first surface region using a first masking layer; protecting second selected regions using a second masking layer, facing the first selected regions, on the second surface region; removing first unprotected regions on the first surface and removing second unprotected regions on the second surface to cause removal of a portion the thickness of material in the first unprotected regions and the second unprotected regions to form a plurality of openings through the thickness of material defined between the first surface region and the second surface region, wherein the plurality of openings are formed in the first unprotected regions and the second unprotected regions; removing the first masking layer; removing the second masking layer to form a patterned silicon substrate; and bonding the patterned silicon substrate to a handle substrate.