Patent · US Expired

Planarizing method for fabricating gate electrodes

US6670226B2 · kind B2 · utility

10Cited by
3References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 8, 2002
Grant dateDec 30, 2003
Priority date
Expiry dateMar 8, 2022

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01L21/3212
  • WIPO fieldSemiconductors
  • WIPO sectorElectrical engineering

Abstract

Within a method for fabricating a semiconductor integrated circuit microelectronic fabrication, there is employed a planarizing method for forming, in a self aligned fashion, a patterned second gate electrode material layer laterally adjacent but not over a patterned first gate electrode material layer, such that upon further patterning of the patterned first gate electrode material layer and the patterned second gate electrode material layer there may be formed a first gate electrode over a first active region of a semiconductor substrate and a second gate electrode over a laterally adjacent second active region of the semiconductor substrate. The method is particularly useful within the context of complementary metal oxide semiconductor (CMOS) semiconductor integrated circuit microelectronic fabrications.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.