Abstract:
The present invention provides an etch-free method for conductive electrode formation. The method comprises depositing an insulating layer (104) on a substrate (102), spin coating a first polymer layer (106) on the substrate (102), patterning the first polymer layer (106) by photo-lithography and depositing a conductive metal layer by physical deposition to form a top metallic layer (108) and a bottom metallic layer (110).
Abstract:
A method for removing photoresist using Wafer Edge Exclusion (WEE) from the wafer coding are is disclosed herein. WEE is used at selective layers of the wafer in order to reduce the topographical defect around the wafer coding area.
Abstract:
The present invention provides a design of overlay feature for wafer fabrication. The design pattern is overlay featuring first via [20] and second via [24] reticles with smaller via boxes instead of one big via box. This way, during application procedures residues can be eliminated after tungsten plug process ensuring new and clean box in box pattern instead of deformed box in box. This overlay feature consist of a four line series of via, via boxes of nine units or more in a line, to eliminate residue after tungsten plug process. This overlay feature consist of a set of four line series of via forming part of a hypothetical square as a replacement of one big square via hole. This design improves the overlay feature and helps overcome overlay measurement problems. As such, improvement in accuracy of data measurement provides correct alignments results which enable alignment correction and thus ensure higher production yield. This design solves the overlay problem and can be placed at any via masks (first via [20] and second via [22]) of new products, replacing standard overlay box-box feature without any changes in process recipes of standard CMOS wafer fabrication.