Patent ID: 8815655
Filing Date: 2014-08-26
Classification: H01L

Abstract:
1. A method for manufacturing semiconductor device, comprising: providing a substrate with a conductive layer formed thereon; forming a dummy layer on the conductive layer, and patterning the dummy layer and at least a portion of the conductive layer to form a plurality of trenches; forming a first dielectric layer to fill into the trenches so as to form a plurality of first dielectric elements in the trenches; removing the dummy layer to expose parts of the first dielectric elements; forming a second dielectric layer on the exposed parts of the first dielectric elements, and patterning the second dielectric layer so that a spacer is formed at a lateral side of each exposed first dielectric element; and patterning the conductive layer by the spacers, so that a patterned conductive portion is formed at each of the lateral sides of each first dielectric element.