Fine pitch solder bump structure with built-in stress buffer
    23.
    发明授权
    Fine pitch solder bump structure with built-in stress buffer 有权
    具有内置应力缓冲器的细间距焊料凸块结构

    公开(公告)号:US08373275B2

    公开(公告)日:2013-02-12

    申请号:US12021321

    申请日:2008-01-29

    IPC分类号: H01L23/485

    摘要: A fine pitch solder bump structure with a built-in stress buffer that is utilized in electronic packages, and a method of producing the fine pitch solder bump structure with built-in stress buffer. Employed is a very thick final passivation layer that is constituted of a polyimide as a so-called “cushion” for a minimal thickness of UBM (BLM) pad and solder material, while concurrently completely separating the resultingly produced polyimide islands, so that the polyimide material provides most of the physical height for the “standoff” of a modified C4 (controlled collapse chip connection) structure. In employing the polyimide material as the primary structural component of the vertical chip package interconnect in this particular inventive manner, the inherent stress buffering property of the polyimide material is utilized to full advantage by effectively reducing the high stresses encountered during chip manufacture processing steps, such as chip join, reflow, preconditioning and reliability thermal cycle stressing.

    摘要翻译: 具有用于电子封装中的内置应力缓冲器的细间距焊料凸块结构以及具有内置应力缓冲器的细间距焊料凸块结构的制造方法。 采用非常厚的最终钝化层,其由作为UBM(BLM)焊盘和焊料材料的最小厚度的所谓的缓冲层的聚酰亚胺构成,同时完全分离得到的聚酰亚胺岛,使得聚酰亚胺材料提供 大部分物理高度用于修改C4(可控崩溃芯片连接)结构的对立。 在采用聚酰亚胺材料作为垂直芯片封装互连的主要结构部件时,通过有效降低芯片制造加工步骤中遇到的高应力,可以充分利用聚酰亚胺材料的固有应力缓冲性能, 作为芯片连接,回流,预处理和可靠性热循环应力。

    Structure, failure analysis tool and method of determining white bump location using failure analysis tool
    28.
    发明授权
    Structure, failure analysis tool and method of determining white bump location using failure analysis tool 有权
    使用故障分析工具确定白色凹凸位置的结构,故障分析工具和方法

    公开(公告)号:US07958477B2

    公开(公告)日:2011-06-07

    申请号:US12046608

    申请日:2008-03-12

    IPC分类号: G06F17/50 G06F9/455

    CPC分类号: G06F17/5081

    摘要: A failure analysis tool, a method of using the tool and a design structure for designing a mask for protecting a critical area of wiring failure in a semiconductor chip during packaging is provided. The failure analysis tool includes a computer infrastructure operable to determine a risk area for wiring layer failure during solder bump formation by determining a distance from a center of a chip to a location for a solder bump processing and identifying an area at an edge of the location for the solder bump processes at a predetermined distance and greater from the center of the chip.

    摘要翻译: 提供了故障分析工具,使用该工具的方法和设计用于设计用于保护封装期间半导体芯片中的接线故障的关键区域的掩模的设计结构。 故障分析工具包括计算机基础设施,其可操作以通过确定从芯片的中心到焊料凸块处理的位置的距离来确定在焊料凸块形成期间的布线层故障的风险区域,并且识别位置边缘处的区域 用于从芯片的中心预定距离和更大的焊料凸块工艺。