Patent ID: 6319745
Filing Date: 2001-11-20
Classification: H01L

Abstract:
A method for forming Charge-Coupled-Device (CCD) image pick-up devices, comprising:forming a first wafer having a first substrate, a CCD layer on the first substrate, and first conductive pads arranged in a pattern on a surface of the CCD layer, wherein the CCD layer includes a plurality of CCD image pick-up arrays, and wherein each CCD array of the CCD layer is conductively coupled to a plurality of the first conductive pads;providing a second wafer having a second substrate that includes a semiconductor material, and second conductive pads arranged in the pattern on a surface of the second substrate;bonding the first wafer with the second wafer to form a wafer composite, wherein the first conductive pads are joined to the second conductive pads in alignment according to the pattern;removing a portion of a thickness of the first substrate, after the bonding step, wherein the second wafer provides mechanical support for the CCD layer during said removing; anddicing the wafer composite, after the removing step, to form a plurality of the image pickup devices such that each image pick-up device includes a CCD array of the CCD layer.