Patent ID: 7199429

Claim:
A semiconductor device comprising: a semiconductor substrate; an insulating layer formed over the semiconductor substrate; a conductive layer formed over the insulating layer; an organic anti-reflective coating (A) layer formed over the conductive layer; a low temperature tetra-ethyl-ortho-silicate (TEOS) layer that is silicon oxide over the organic (ARC) layer; and a patterned photoresist layer formed over the TEOS layer; wherein, the characteristics of the TEOS layer comprise: does not contain nitrogen; is not susceptible to photoresist poisoning; adheres to photoresist designed for a 193 nanometer lithograhy; adheres to the underlying organic ARC layer; has anti-reflective properties in combination with the organic ARC layer at 193 nanometer lithography; is capable of rework if the patterned photoresist is removed; and is stable.