Invention Grant
- Patent Title: Slurryless mechanical planarization for substrate reclamation
- Patent Title (中): 无衬底机械平面化用于衬底回收
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Application No.: US12111276Application Date: 2008-04-29
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Publication No.: US08210904B2Publication Date: 2012-07-03
- Inventor: Graham M. Bates , David Domina , James L. Hardy, Jr. , Eric J. White
- Applicant: Graham M. Bates , David Domina , James L. Hardy, Jr. , Eric J. White
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Richard M. Kotulak, Esq.
- Main IPC: B24B1/00
- IPC: B24B1/00

Abstract:
A patterned portion of a patterned semiconductor substrate is removed by abrasive mechanical planarization employing an abrasive pad but without employing any slurry. Preferably, water is supplied to enhance the removal rate during the mechanical planarization. The removal rate of material is substantially independent for common materials employed in back-end-of-line (BEOL) semiconductor materials, which enables non-selective removal of the material containing metallization structures. The removal rate of silicon is lower than the removal rate for the BEOL semiconductor materials, enabling a self-stopping planarization process.
Public/Granted literature
- US20090270017A1 Slurryless Mechanical Planarization for Substrate Reclamation Public/Granted day:2009-10-29
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