Invention Grant
- Patent Title: Methods of lithographically patterning a substrate
- Patent Title (中): 平版印刷基板的方法
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Application No.: US11868328Application Date: 2007-10-05
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Publication No.: US08309297B2Publication Date: 2012-11-13
- Inventor: Yoshiki Hishiro , Scott Sills , Hiroyuki Mori , Troy Gugel , Paul D. Shirley , Lijing Gou , Adam Olson
- Applicant: Yoshiki Hishiro , Scott Sills , Hiroyuki Mori , Troy Gugel , Paul D. Shirley , Lijing Gou , Adam Olson
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Wells St. John, P.S.
- Main IPC: G03F7/22
- IPC: G03F7/22

Abstract:
A method of lithographically patterning a substrate that has photoresist having removal areas and non-removal areas includes first exposing at least the non-removal areas to radiation effective to increase outer surface roughness of the photoresist in the non-removal areas at least post-develop but ineffective to change photoresist solubility in a developer for the photoresist to be cleared from the non-removal areas upon develop with the developer. Second exposing of radiation to the removal areas is conducted to be effective to change photoresist solubility in the developer for the photoresist to be cleared from the removal areas upon develop with the developer. The photoresist is developed with the developer effective to clear photoresist from the removal areas and to leave photoresist in the non-removal areas that has outer surface roughness in the non-removal areas which is greater than that before the first exposing. Other implementations and embodiments are contemplated.
Public/Granted literature
- US20090092933A1 Methods of Lithographically Patterning a Substrate Public/Granted day:2009-04-09
Information query
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