Patent ID: 6872664
Filing Date: 2005-03-29
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising: providing a wafer substrate having a surface; forming a first nitride layer over the wafer substrate; providing a layer of photoresist over the first nitride layer; patterning and defining the photoresist layer; etching the first nitride layer unmasked by the photoresist to remove a portion of the first nitride layer to expose a portion of the substrate surface; removing the photoresist layer; and depositing a second nitride layer over the first nitride layer and the exposed substrate surface portion to form a nitride structure having a first thickness and a second thickness, wherein the first thickness includes a thickness of the first nitride layer, and wherein the first thickness is greater than a sum of the second thickness and the thickness of the first nitride layer.