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    • 3. 发明申请
    • System and Method for Directional Grinding on Backside of a Semiconductor Wafer
    • 用于在半导体晶片背面定向研磨的系统和方法
    • US20090068933A1
    • 2009-03-12
    • US11852771
    • 2007-09-10
    • SungYoon LeeJungHoon ShinBoHan Yoon
    • SungYoon LeeJungHoon ShinBoHan Yoon
    • B24B5/00
    • B24B7/228
    • A backside grinding apparatus removes semiconductor material from a surface of a semiconductor wafer. The wafer is mounted to a backing plate. The backside surface undergoes a first grinding operation in a rotational motion to remove excess semiconductor material. The semiconductor wafer is then aligned such that edges of the die are oriented along a reference line. The backside surface undergoes a second grinding operation in a linear direction on a 45-diagonal with respect to the reference line to create linear grind marks which are diagonal to the edges of the die. The linear grind marks are formed by an abrasive surface having at least 4000 mesh count. The second grinding operation removes the radial grind marks produced by the first grinding operation. The linear grind marks oriented diagonal with respect to the reference line increases the strength of the die to resist cracking.
    • 背面研磨装置从半导体晶片的表面去除半导体材料。 晶片安装到背板上。 后表面在旋转运动中进行第一次研磨操作以除去多余的半导体材料。 然后对准半导体晶片,使得管芯的边缘沿着参考线取向。 背面在相对于参考线的45对角线上沿线性方向进行第二次研磨操作,以产生与模具的边缘对角的线性研磨标记。 线性磨痕由具有至少4000目计数的研磨表面形成。 第二磨削操作移除由第一研磨操作产生的径向磨痕。 相对于参考线定向的线性磨削标记增加了模具的抗力开裂强度。
    • 7. 发明授权
    • Ultra thin bumped wafer with under-film
    • 带薄膜的超薄凸起晶圆
    • US07838391B2
    • 2010-11-23
    • US11745045
    • 2007-05-07
    • Junghoon ShinSangho LeeSungyoon Lee
    • Junghoon ShinSangho LeeSungyoon Lee
    • H01L21/30H01L21/46
    • H01L21/78H01L2224/16225H01L2224/32225H01L2224/73104H01L2224/73204H01L2924/00011H01L2924/00014H01L2924/00H01L2224/0401
    • A semiconductor device begins with a wafer having a plurality of bumps formed on a surface of the wafer. An under-film layer is formed over the wafer to completely cover all portions of the bumps with the under-film layer. An adhesive layer is formed over the under-film layer. A support layer is attached over the adhesive layer. A back surface of the wafer undergoes grinding. The support layer provides structural support to the wafer. The support layer is removed to expose the adhesive layer. The adhesive layer is removed to expose the under-film layer. The wafer is singulated into semiconductor die. The semiconductor die is mounted to a substrate by applying force to a back surface of the semiconductor die to press the bumps through under-film layer to contact the substrate while the under-film layer provides an underfill between the semiconductor die and substrate.
    • 半导体器件开始于在晶片的表面上形成有多个凸块的晶片。 在晶片之上形成底膜层,以完全覆盖具有底膜层的凸块的所有部分。 在底膜层上形成粘合剂层。 支撑层附着在粘合剂层上。 晶片的后表面进行研磨。 支撑层为晶片提供结构支撑。 去除支撑层以暴露粘合剂层。 去除粘合剂层以暴露底膜层。 将晶片分成半导体芯片。 通过向半导体管芯的背面施加力将半导体管芯安装到基板上,以通过底膜层将凸块按压以接触基板,同时底膜层在半导体管芯和基板之间提供底部填充。