发明名称 USING A DOUBLE-CUT FOR MECHANICAL PROTECTION OF A WAFER-LEVEL CHIP SCALE PACKAGE (WLCSP)
摘要 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.
申请公布号 US2014110842(A1) 申请公布日期 2014.04.24
申请号 US201313967084 申请日期 2013.08.14
申请人 NXP B.V. 发明人 ZENZ CHRISTIAN;BUENNING HARTMUT;VAN GEMERT LEONARDUS ANTONIUS ELISABETH;KAMPHUIS TONNY;MOELLER SASCHA
分类号 H01L21/782;H01L23/498 主分类号 H01L21/782
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