Invention Grant
US09245804B2 Using a double-cut for mechanical protection of a wafer-level chip scale package (WLCSP)
有权
使用双切割机制保护晶圆级芯片级封装(WLCSP)
- Patent Title: Using a double-cut for mechanical protection of a wafer-level chip scale package (WLCSP)
- Patent Title (中): 使用双切割机制保护晶圆级芯片级封装(WLCSP)
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Application No.: US13967084Application Date: 2013-08-14
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Publication No.: US09245804B2Publication Date: 2016-01-26
- Inventor: Christian Zenz , Hartmut Buenning , Leonardus Antonius Elisabeth Van Gemert , Tonny Kamphuis , Sascha Moeller
- Applicant: NXP B.V.
- Applicant Address: NL Eindhoven
- Assignee: NXP B.V.
- Current Assignee: NXP B.V.
- Current Assignee Address: NL Eindhoven
- Main IPC: H01L21/44
- IPC: H01L21/44 ; H01L21/82 ; H01L21/782 ; H01L23/48 ; H01L23/498 ; H01L23/31 ; H01L23/488 ; H01L21/50 ; H01L21/56 ; H01L21/683 ; H01L29/06 ; H01L23/00

Abstract:
Consistent with an example embodiment, there is a semiconductor device, with an active device having a front-side surface and a backside surface; the semiconductor device of an overall thickness, comprises an active device with circuitry defined on the front-side surface, the front-side surface having an area. The back-side of the active device has recesses f a partial depth of the active device thickness and a width of about the partial depth, the recesses surrounding the active device at vertical edges. There is a protective layer of a thickness on to the backside surface of the active device, the protective material having an area greater than the first area and having a stand-off distance. The vertical edges have the protective layer filling the recesses flush with the vertical edges. A stand-off distance of the protective material is a function of the semiconductor device thickness and the tangent of an angle (θ) of tooling impact upon a vertical face the semiconductor device.
Public/Granted literature
- US20140110842A1 USING A DOUBLE-CUT FOR MECHANICAL PROTECTION OF A WAFER-LEVEL CHIP SCALE PACKAGE (WLCSP) Public/Granted day:2014-04-24
Information query
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