Invention Grant
US08809191B2 Semiconductor device and method of forming UBM structure on back surface of TSV semiconductor wafer
有权
在TSV半导体晶片背面形成UBM结构的半导体器件及方法
- Patent Title: Semiconductor device and method of forming UBM structure on back surface of TSV semiconductor wafer
- Patent Title (中): 在TSV半导体晶片背面形成UBM结构的半导体器件及方法
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Application No.: US13324446Application Date: 2011-12-13
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Publication No.: US08809191B2Publication Date: 2014-08-19
- Inventor: Won Kyoung Choi , Chang Bum Yong , Jae Hun Ku
- Applicant: Won Kyoung Choi , Chang Bum Yong , Jae Hun Ku
- Applicant Address: SG Singapore
- Assignee: STATS ChipPAC, Ltd.
- Current Assignee: STATS ChipPAC, Ltd.
- Current Assignee Address: SG Singapore
- Agency: Patent Law Group: Atkins and Associates, P.C.
- Agent Robert D. Atkins
- Main IPC: H01L21/00
- IPC: H01L21/00

Abstract:
A semiconductor device has a plurality of conductive vias formed through the semiconductor die with a first insulating layer around the conductive vias. A recess is formed in the first insulating layer around the conductive vias by LDA. A portion of the semiconductor wafer is removed by LDA after forming the recess in the first insulating layer so that the conductive vias extend above a surface of the semiconductor wafer. The first insulating layer extends to the surface of the semiconductor wafer or above the surface of the semiconductor wafer. A second insulating layer is formed over the surface of the semiconductor wafer and conductive vias. A first portion of the second insulating layer is removed by LDA, while leaving a second portion of the second insulating layer over the surface of the semiconductor wafer around the conductive vias. An electroless plated bump is formed over the conductive vias.
Public/Granted literature
- US20130147036A1 Semiconductor Device and Method of Forming UBM Structure on Back Surface of TSV Semiconductor Wafer Public/Granted day:2013-06-13
Information query
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