Patent ID: 6674136
Filing Date: 2004-01-06
Classification: G02F,H01L

Abstract:
A semiconductor device comprising:a driver circuit and a pixel section formed over the same substrate; an n-channel TFT provided in said driver circuit over said substrate comprising a pair of high concentration impurity regions, a channel forming region provided between said high concentration impurity region, and a low concentration impurity region provided between said channel forming region and at least one of said high concentration impurity regions, said high concentration impurity region containing a Group 15 element in the Periodic Table therein; and an n-channel TFT provided in said pixel section over said substrate and comprising a pair of high concentration impurity regions, a channel forming region provided between said high concentration impurity region, and a low concentration impurity region provided between said channel forming region and at least one of said high concentration impurity regions, said high concentration impurity region of said n-channel TFT in said pixel section containing a Group 15 element in the Periodic Table therein, wherein concentration of said Group 15 element contained in said high concentration impurity region of said TFT in said driver circuit is higher in comparison with concentration of said Group 15 element contained in said high concentration impurity region of said TFT in said pixel section.