Invention Grant
- Patent Title: Metal lines having etch-bias independent height
- Patent Title (中): 具有蚀刻偏置独立高度的金属线
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Application No.: US13744756Application Date: 2013-01-18
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Publication No.: US09337082B2Publication Date: 2016-05-10
- Inventor: Junjing Bao , Wai-Kin Li
- Applicant: GLOBALFOUNDRIES INC.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Main IPC: H01L23/48
- IPC: H01L23/48 ; H01L21/336 ; H01L21/768

Abstract:
A dielectric material stack including at least a via level dielectric material layer, at least one patterned etch stop dielectric material portion, a line level dielectric material layer, and optionally a dielectric cap layer is formed over a substrate. At least one patterned hard mask layer including a first pattern can be formed above the dielectric material stack. A second pattern is transferred through the line level dielectric material layer employing the at least one etch stop dielectric material portion as an etch stop structure. The first pattern is transferred through the line level dielectric material layer employing the at least one etch stop dielectric material portion as an etch stop structure while the second pattern is transferred through the via level dielectric material layer to form integrated line and via trenches, which are filled with a conductive material to form integrated line and via structures.
Public/Granted literature
- US20140203447A1 METAL LINES HAVING ETCH-BIAS INDEPENDENT HEIGHT Public/Granted day:2014-07-24
Information query
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