Patent ID: 7709371
Filing Date: 2010-05-04
Classification: H01L

Abstract:
1. A method for deterring the formation of stress-induced voids in an organosilicate glass dielectric film on a substrate, which organosilicate glass dielectric film has been patterned to form vias and trenches therein, and which organosilicate glass dielectric film has been thereafter subjected to at least one treatment which removes at least a portion of previously existing carbon containing moieties and reduces hydrophobicity of said organosilicate glass dielectric film, and which vias and trenches have been thereafter filled with a metal, and which metal has then been thereafter subjected to an annealing treatment, the method comprising contacting the organosilicate glass dielectric film, after being subjected to at least one treatment which removes previously existing carbon containing moieties, but before said vias and trenches have been filled with a metal, with a toughening agent composition at a concentration and for a time period effective to restore at least some of the carbon containing moieties to the organosilicate glass dielectric film and increase the hydrophobicity of the organosilicate glass dielectric film.