Stress resistant micro-via structure for flexible circuits

    公开(公告)号:US10276486B2

    公开(公告)日:2019-04-30

    申请号:US12715450

    申请日:2010-03-02

    IPC分类号: H01L23/498

    摘要: A chip package is disclosed that includes an electronic chip having a plurality of die pads formed on a top surface thereof, with a polyimide flex layer positioned thereon by way of an adhesive layer. A plurality of vias is formed through the polyimide flex layer and the adhesive layer corresponding to the die pads. A plurality of metal interconnects are formed on the polyimide flex layer each having a cover pad covering a portion of a top surface of the polyimide flex layer, a sidewall extending down from the cover pad and through the via along a perimeter thereof, and a base connected to the sidewall and forming an electrical connection with a respective die pad. Each of the base and the sidewall is formed to have a thickness that is equal to or greater than a thickness of the adhesive layer.

    STRESS RESISTANT MICRO-VIA STRUCTURE FOR FLEXIBLE CIRCUITS
    4.
    发明申请
    STRESS RESISTANT MICRO-VIA STRUCTURE FOR FLEXIBLE CIRCUITS 审中-公开
    用于柔性电路的耐应力微观结构

    公开(公告)号:US20110215480A1

    公开(公告)日:2011-09-08

    申请号:US12715450

    申请日:2010-03-02

    摘要: A chip package is disclosed that includes an electronic chip having a plurality of die pads formed on a top surface thereof, with a polyimide flex layer positioned thereon by way of an adhesive layer. A plurality of vias is formed through the polyimide flex layer and the adhesive layer corresponding to the die pads. A plurality of metal interconnects are formed on the polyimide flex layer each having a cover pad covering a portion of a top surface of the polyimide flex layer, a sidewall extending down from the cover pad and through the via along a perimeter thereof, and a base connected to the sidewall and forming an electrical connection with a respective die pad. Each of the base and the sidewall is formed to have a thickness that is equal to or greater than a thickness of the adhesive layer.

    摘要翻译: 公开了一种芯片封装,其包括具有形成在其顶表面上的多个管芯焊盘的电子芯片,其中聚酰亚胺柔性层通过粘合剂层定位在其上。 通过聚酰亚胺柔性层和对应于芯片焊盘的粘合剂层形成多个通孔。 多个金属互连件形成在聚酰亚胺柔性层上,每层具有覆盖聚酰亚胺柔性层的顶表面的一部分的覆盖层,从盖垫向下延伸并沿其周边穿过通孔的侧壁, 连接到侧壁并与相应的管芯焊盘形成电连接。 基底和侧壁中的每一个被形成为具有等于或大于粘合剂层的厚度的厚度。

    Structure and method for molding optical disks

    公开(公告)号:US6146558A

    公开(公告)日:2000-11-14

    申请号:US71624

    申请日:1998-05-01

    IPC分类号: B29C45/26 G11B7/26 B29D11/00

    摘要: A method for molding an optical disk comprises: applying a thermally insulative insert coating to at least one thermally insulative mold insert to provide at least one coated mold insert having a reduced surface roughness; positioning the coated mold insert between a thermally conductive mold form and a portion of a thermally conductive mold apparatus; injecting a molten thermoplastic material into the mold apparatus; retaining the material in the mold apparatus for a time sufficient for the molten thermoplastic material to cool below its glass transition temperature to form the optical disk; and ejecting the optical disk from the mold apparatus. In another embodiment, the mold insert is coated or laminated on the mold form with the mold insert having a coefficient of thermal expansion compatible with the coefficient of thermal expansion of the mold form. In another embodiment, the mold insert is fabricated by being applied, cured, and then removed from a release layer.