- 专利标题: Semiconductor wafer and method of wafer thinning using grinding phase and separation phase
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申请号: US15226362申请日: 2016-08-02
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公开(公告)号: US10096460B2公开(公告)日: 2018-10-09
- 发明人: Michael J. Seddon
- 申请人: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- 申请人地址: US AZ Phoenix
- 专利权人: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- 当前专利权人: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- 当前专利权人地址: US AZ Phoenix
- 代理机构: IPTechLaw
- 主分类号: B24B7/22
- IPC分类号: B24B7/22 ; H01L21/02 ; H01L21/67 ; H01L23/544 ; H01L21/78 ; H01L21/768 ; H01L21/66 ; B24B55/06
摘要:
A semiconductor wafer has a base material. The semiconductor wafer may have an edge support ring. A grinding phase of a surface of the semiconductor wafer removes a portion of the base material. The grinder is removed from or lifted off the surface of the semiconductor wafer during a separation phase. The surface of the semiconductor wafer and under the grinder is rinsed during the grinding phase and separation phase to remove particles. A rinsing solution is dispensed from a rinsing solution source to rinse the surface of the semiconductor wafer. The rinsing solution source can move in position while dispensing the rinsing solution to rinse the surface of the semiconductor wafer. The grinding phase and separation phase are repeated during the entire grinding operation, when grinding conductive TSVs, or during the final grinding stages, until the final thickness of the semiconductor wafer is achieved.
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