Invention Grant
- Patent Title: Methods of forming a protection layer to protect a metal hard mask layer during lithography reworking processes
- Patent Title (中): 在光刻返修过程中形成保护层以保护金属硬掩模层的方法
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Application No.: US13798764Application Date: 2013-03-13
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Publication No.: US09287109B2Publication Date: 2016-03-15
- Inventor: Torsten Huisinga , Keith Donegan , Robert Seidel
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee: GLOBALFOUNDRIES Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Amerson Law Firm, PLLC
- Main IPC: H01L21/308
- IPC: H01L21/308 ; H01L21/02 ; H01L21/311

Abstract:
One method disclosed herein includes forming a layer of insulating material above a semiconductor substrate, forming a hard mask layer comprised of a metal-containing material above the layer of insulating material, forming a blanket protection layer on the hard mask layer, forming a masking layer above the protection layer, performing at least one etching process on the masking layer to form a patterned masking layer having an opening that stops on and exposes a portion of the blanket protection layer, confirming that the patterned masking layer is properly positioned relative to at least one underlying structure or layer and, after confirming that the patterned masking layer is properly positioned, performing at least one etching process through the patterned masking layer to pattern at least the blanket protection layer.
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Information query
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