Patent ID: 6821840
Filing Date: 2004-11-23
Classification: H01L,Y10S

Abstract:
A method of forming a semiconductor device, the method comprising:providing a substrate having formed thereon a first semiconductor region and a second semiconductor region separated by an isolation structure; depositing a single first dielectric layer having a first permittivity with a first thickness on a surface of said first semiconductor region; forming a cap layer on exposed portions of said single first dielectric layer; masking at least said first semiconductor region and removing an unmasked portion of at least said single first dielectric layer; after forming said cap layer, forming a single second dielectric layer having a second permittivity with a second thickness on a surface of said second semiconductor region; and patterning a layer of conductive material formed above said first and said second dielectric layers to create a first capacitive element and a second capacitive element, wherein said first permittivity is higher than said second permittivity.