Invention Grant
- Patent Title: Unique chemical mechanical planarization approach which utilizes magnetic slurry for polish and magnetic fields for process control
- Patent Title (中): 独特的化学机械平面化方法,利用磁性浆料进行抛光和磁场处理控制
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Application No.: US1509Application Date: 1997-12-31
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Publication No.: US6083839APublication Date: 2000-07-04
- Inventor: Lawrence D. Wong
- Applicant: Lawrence D. Wong
- Applicant Address: CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: CA Santa Clara
- Main IPC: B24B1/00
- IPC: B24B1/00 ; B24B37/04 ; C09G1/02 ; H01L21/3105 ; H01L21/304
Abstract:
The present invention is an improved apparatus and process for chemical mechanical polishing (CMP) layers which have a low dielectric constant (k). The present invention uses a magnetic slurry and a magnetic coil for polishing the wafer with the magnetic slurry. By using a magnetic slurry and a magnetic coil the force used during polishing can be controlled resulting greater control over the CMP process during the polishing of low k materials.
Public/Granted literature
- USD349896S Rear projection monitor Public/Granted day:1994-08-23
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