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    • 7. 发明公开
    • Chip contacts without oxide discontinuities
    • Chip-Kontakte ohne Oxid-Unstetigkeiten。
    • EP0303812A1
    • 1989-02-22
    • EP88110698.3
    • 1988-07-05
    • International Business Machines Corporation
    • Gajda, Joseph JohnSrikrishnan, Kris VenkatamanTotta, Paul AnthonyTrudeau, Francis Georges
    • H01L21/90
    • H01L21/76897H01L23/4855H01L2924/0002H01L2924/00
    • An integrated circuit chip including a first surface (64) and a higher second surface (68), with an abrupt sidewall step transition (71) therebetween (71), and having a first layer (36) of a first conductive material disposed over the first surface and over the second surface , but terminating on the first surface level in a first end portion which extends up to but does not touch the sidewall. This end portion comprises a conductive material (74) which has been converted to an insulator. A second layer of a second conductive material (40) is disposed on top of the first conductive layer with essentially no conductive material conversion to insulator therein adjacent to the abrupt sidewall transition.
      In a preferred embodiment, the conductive material is an alloy of aluminum and the end portion is aluminum oxide.
    • 一种集成电路芯片,包括第一表面(64)和较高的第二表面(68),其间具有突然的侧壁阶跃转变(71),并且具有设置在所述第一表面上的第一导电材料的第一层(36) 第一表面和第二表面上,但是在第一端部终止于第一表面水平面,该第一端部部分向上延伸但不接触侧壁。 该端部包括已经转换成绝缘体的导电材料(74)。 第二导电材料层(40)被设置在第一导电层的顶部上,基本上没有导电材料转换成邻近突变侧壁转变的绝缘体。 在优选实施例中,导电材料是铝的合金,并且端部是氧化铝。