Patent ID: 6764914
Filing Date: 2004-07-20
Classification: H01L

Abstract:
A method of fabricating a high dielectric constant, (high K), layer, for a metal-oxide-metal capacitor structure, via exposure of a region of an underlying metal layer, to a UV, or to an I line procedure, performed in an oxidizing ambient, comprising the steps of:depositing said underlying metal layer; providing a quartz phtolithographic plate with a chromium pattern; performing said UV, or I line exposure, in said oxidizing ambient created by a flow of 10 to to 1000 sccm of an oxidizing species, to a region of said underlying metal layer exposed through a clear opening in said quartz photolithographic plate, with said UV or I line procedure creating a temperature between about 250 to 100Â° C., at exposed portions of a top surface of said underlaying metal layer, creating said high K layer, in exposed top portion of said underlying metal layer; depositing an overlying metal layer on said high K layer; and patterning of said overlying metal layer, of said high K layer, and of unoxidized, bottom portion of said underlying metal layer, forming said metal-oxide-metal, capacitor structure.