Protective coating composition for dual damascene process
US6734258B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Dec 11, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L81/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention discloses a protective coating solution suitable for forming a resinous protective coating layer on a patterned resist layer in the manufacture of semiconductor devices having, in particular, crowdedly hole-patterned areas and areas of an isolated hole pattern. The essential ingredients of the solution are (A) a resinous compound such as an acrylic resin and (B) a crosslinking compound such as a triazine compound which are combined in such a proportion of 2:8 to 4:6 by weight that the overall weight-average molecular weight of the components (A) and (B) is in the range from 1300 to 4500. This inventive coating solution is advantageous in respect of evenness in the thickness of the coating layer even on a patterned resist layer having a crowdedly hole-patterned area and an isolatedly hole-patterned area and absence of unfilled voids within the hole patterns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.