Invention Grant
US09401289B2 Semiconductor device and method of backgrinding and singulation of semiconductor wafer while reducing kerf shifting and protecting wafer surfaces
有权
半导体器件和半导体晶片的背面研磨和切割的方法,同时减少切屑移位和保护晶片表面
- Patent Title: Semiconductor device and method of backgrinding and singulation of semiconductor wafer while reducing kerf shifting and protecting wafer surfaces
- Patent Title (中): 半导体器件和半导体晶片的背面研磨和切割的方法,同时减少切屑移位和保护晶片表面
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Application No.: US13488029Application Date: 2012-06-04
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Publication No.: US09401289B2Publication Date: 2016-07-26
- Inventor: MinJung Kim , KyungHoon Lee , JoungIn Yang , WonIl Kwon , DaeSik Choi
- Applicant: MinJung Kim , KyungHoon Lee , JoungIn Yang , WonIl Kwon , DaeSik Choi
- Applicant Address: SG Singapore
- Assignee: STATS ChipPAC Pte. Ltd.
- Current Assignee: STATS ChipPAC Pte. Ltd.
- Current Assignee Address: SG Singapore
- Agency: Patent Law Group: Atkins and Associates, P.C.
- Agent Robert D. Atkins
- Main IPC: H01L21/78
- IPC: H01L21/78 ; H01L21/56 ; H01L23/31 ; H01L21/683

Abstract:
A semiconductor device has a semiconductor wafer with an interconnect structure formed over a first surface of the wafer. A trench is formed in a non-active area of the semiconductor wafer from the first surface partially through the semiconductor wafer. A protective coating is formed over the first surface and into the trench. A lamination tape is applied over the protective coating. A portion of a second surface of the semiconductor wafer is removed by backgrinding or wafer thinning to expose the protecting coating in the trench. A die attach film is applied over the second surface of the semiconductor wafer. A cut or modified region is formed in the die attach film under the trench using a laser. The semiconductor wafer is expanded to separate the cut or modified region of the die attach film and singulate the semiconductor wafer.
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