Abstract:
Provided is a stacked chip package and a method for forming the same. A spacer is formed on a side of an upper chip. A conductive line is formed on the spacer to electrically connect upper and lower chips. The reliability of the stacked chip package is improved because wire bonding is not used to electrically connect the upper and lower chips. Further, the overall size of the stacked chip package can be reduced as the height of bonding wire loops does not contribute to the overall stacked chip package height.
Abstract:
A stacked chip package and a method for manufacturing the same are provided to prevent reliability degradation due to the curve and protrusion of a bonding wire by using a metal wire for electrically connecting first and second semiconductor chip instead of a bonding wire. A second semiconductor chip(30) is laminated on a first semiconductor chip(10). A spacer(20a) is formed at a side of the semiconductor chip. A metal wire(65) is formed on the spacer to electrically connect the first semiconductor chip to the second semiconductor chip. The spacer is formed by using an adhesive agent. When the metal wire is formed, a wire layer for the metal wire is formed and the wire layer is patterned. When the wire layer is formed, a seed metal layer is formed. A metal layer is formed on the seed metal layer by an electroplating process. The metal wire is copper. The copper metal wire is formed by an electroplating method. A solder bump is formed on the metal wire.
Abstract:
A system-in package is provided to minimize the length of a system-in package by making the system-in package have the same length as that of a main chip. A system-in package includes a main chip(CHIP_1) and at least one sub chip(CHIP_2,CHIP_3). The first surface(FRONT) of the main chip is electrically connected to the second surface(BACK) of the main chip by a through electrode(VIA11,VIA12). The at least one sub chip is mounted on the second surface of the main chip where a redistribution line(RDL) is formed. The length of the system-in package is the same as that of the main chip. The main chip can be a longest one of the plurality of chips included in the system-in package.
Abstract:
A method for compensating for an undercut of a metal base layer is provided to guarantee the area of a metal base layer by compensating for an undercut of a metal base layer under a redistribution layer or a solder bump. An insulation layer is formed on a semiconductor wafer(91). The insulation layer is covered with a multilayered metal base layer(92). A photomask having an open part is formed on the metal base layer(93). The photomask is dry-etched to form a concave part that rounds toward the inner lower part of the inner wall of the open part adjacent to the metal base layer(94). The open part including the concave part is filled with a plating layer(95). The photomask is eliminated(96). The metal base layer outside the plating layer is wet-etched(97). The metal base layer that is etched toward the inside of the outer surface of the plating layer on the upper part of a protrusion part is reduced by the protrusion part of the plating layer filled in the concave part so that an area of the metal base layer under the plating layer is guaranteed. The plating layer can be a redistribution layer or a solder plating layer for a solder bump.
Abstract:
솔더볼 접착 신뢰도를 높이는 반도체 패키지 및 그 제조방법에 관해 개시한다. 이를 위해 본 발명은 솔더볼이 부착된 반도체 소자 위에 절연막 대신에 고분자 감광막을 코팅하고 솔더볼 위에 있는 고분자 감광막 일부를 노광공정으로 제거하여 일정한 크기의 콘택영역을 형성한다. 따라서 고분자 감광막이 솔더볼의 접착 신뢰도를 높일 수 있다. 솔더볼 접착 신뢰도(SJR), WLCSP, 고분자 감광막.
Abstract:
본 발명은 웨이퍼 레벨 적층 패키지용 칩 스케일 패키지 제조 방법에 관한 것으로, 관통 전극을 형성하기 위한 레이저 드릴링 공정과 감광막을 이용한 절연층 패터닝 공정과 같은 크리티클 공정 없이 일반적인 반도체 제조 공정을 이용하여 관통 전극을 형성하기 위해서, 반도체 웨이퍼의 칩 절단 영역을 따라서 소정의 깊이로 쏘잉하여 슬롯을 형성하고, 슬롯에 층간 절연 소재의 절연층을 형성한 후 일반적인 반도체 제조 공정을 이용하여 관통 전극을 형성하는 웨이퍼 레벨 적층 패키지용 칩 스케일 패키지 제조 방법을 제공한다. 웨이퍼 레벨, 적층, 칩 스케일 패키지, 슬롯, 층간 절연층, 감광막