Patent ID: 7026256
Filing Date: 2006-04-11
Classification: H01L

Abstract:
1. A method for forming a flowable dielectric layer in a semiconductor device, the method comprising the steps of: a) forming a plurality of patterns on a semiconductor substrate, wherein narrow and deep gaps are formed therebetween; b) forming a flowable dielectric layer so as to fill the gaps between the patterns; c) carrying out a ultra-violet (UV) baking process for densifying the flowable dielectric layer from a bottom face thereof, wherein the UV bake process is carried out while supplying a cooling gas over the flowable dielectric layer; d) forming a plurality of contact holes by selectively etching the flowable dielectric layer; e) carrying out a pre-cleaning process in order to remove native oxide and impurity substances on the contact holes; and f forming a plurality of contact plugs by filling a conductive material into the contact holes.