Invention Grant
- Patent Title: Apparatuses for reducing metal residue in edge bead region from metal-containing resists
-
Application No.: US16810924Application Date: 2020-03-06
-
Publication No.: US11187986B2Publication Date: 2021-11-30
- Inventor: Mollie Waller , Brian J. Cardineau , Kai Jiang , Alan J. Telecky , Stephen T. Meyers , Benjamin L. Clark
- Applicant: Inpria Corporation
- Applicant Address: US OR Corvallis
- Assignee: Inpria Corporation
- Current Assignee: Inpria Corporation
- Current Assignee Address: US OR Corvallis
- Agency: Christensen, Fonder, Dardi & Herbert PLLC
- Agent Diane E. Bennett; Peter S. Dardi
- Main IPC: H01L21/027
- IPC: H01L21/027 ; H01L21/67 ; G03F7/42 ; G03F7/16 ; G03F7/004 ; H01L21/02

Abstract:
Apparatuses and methods are described for removing edge bead on a wafer associated with a resist coating comprising a metal containing resist compositions. The methods can comprise applying a first bead edge rinse solution along a wafer edge following spin coating of the wafer with the metal based resist composition, wherein the edge bead solution comprises an organic solvent and an additive comprising a carboxylic acid, an inorganic fluorinated acid, a tetraalkylammonium compound, or a mixture thereof. Alternatively or additionally, the methods can comprise applying a protective composition to the wafer prior to performing an edge bead rinse. The protective composition can be a sacrificial material or an anti-adhesion material and can be applied only to the wafer edge or across the entire wafer in the case of the protective composition. Corresponding apparatuses for processing the wafers using these methods are presented.
Public/Granted literature
- US20200209756A1 APPARATUSES FOR REDUCING METAL RESIDUE IN EDGE BEAD REGION FROM METAL-CONTAINING RESISTS Public/Granted day:2020-07-02
Information query
IPC分类: