Invention Grant
- Patent Title: Method for lithography for optimizing process conditions
- Patent Title (中): 光刻方法优化工艺条件
-
Application No.: US11371820Application Date: 2006-03-09
-
Publication No.: US07767385B2Publication Date: 2010-08-03
- Inventor: Carl E. Larson , Sharee J. McNab , Steven E. Steen , Raman G. Viswanathan , Gregory M. Wallraff
- Applicant: Carl E. Larson , Sharee J. McNab , Steven E. Steen , Raman G. Viswanathan , Gregory M. Wallraff
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Tutunjian & Bitetto, P.C.
- Agent Vazken A. Alexanian
- Main IPC: G03F7/20
- IPC: G03F7/20

Abstract:
A method of lithography is disclosed, which allows for independent resist process optimization of two or more exposure steps that are performed on a single resist layer. By providing for a separate post-exposure bake after each resist exposure step, pattern resolution for each exposure can be optimized. The method can generally be used with different lithographic techniques, and is well-suited for hybrid lithography. It has been applied to the fabrication of a device, in which the active area and the gate levels are defined in separate mask levels using hybrid lithography with an e-beam source and a 248 nm source respectively. Conditions for post-exposure bakes after the two exposure steps are independently adjusted to provide for optimized results.
Public/Granted literature
- US20070212654A1 Method for lithography for optimizing process conditions Public/Granted day:2007-09-13
Information query
IPC分类: