Invention Application
- Patent Title: DIFFERENTIAL CONTRAST PLATING FOR ADVANCED PACKAGING APPLICATIONS
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Application No.: PCT/US2020/070303Application Date: 2020-07-22
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Publication No.: WO2021022292A1Publication Date: 2021-02-04
- Inventor: BANIK II, Stephen, J. , BLICKENSDERFER, Jacob, Kurtis , VENKATRAMAN, Kailash , OBERST, Justin , CHUA, Lee, Peng , BUCKALEW, Bryan, L. , MAYER, Steven, T.
- Applicant: LAM RESEARCH CORPORATION
- Applicant Address: 4650 Cushing Parkway Fremont, California 94538 US
- Assignee: LAM RESEARCH CORPORATION
- Current Assignee: LAM RESEARCH CORPORATION
- Current Assignee Address: 4650 Cushing Parkway Fremont, California 94538 US
- Agency: WEAVER, Jeffrey, K. et al.
- Priority: US62/879,277 20190726
- Main IPC: H01L23/00
- IPC: H01L23/00 ; H01L23/49
Abstract:
A method of electroplating a metal into features, having substantially different depths, of a partially fabricated electronic device on a substrate is provided. The method includes adsorbing accelerator into the bottom of recessed features; partially filling the features by a bottom up fill mechanism in an electroplating solution; diffusing leveler into shallow features to decrease the plating rate in shallow features as compared to deep features; and electroplating more metal into the features such that the height of metal in deep features is similar to the height of metal in shallow features.
Information query
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