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    • 9. 发明申请
    • Special contact points for accessing internal circuitry of an intergrated circuit
    • 用于访问集成电路内部电路的特殊接点
    • US20060006384A1
    • 2006-01-12
    • US11221231
    • 2005-09-06
    • Benjamin EldridgeIgor KhandrosDavid PedersenRalph Whitten
    • Benjamin EldridgeIgor KhandrosDavid PedersenRalph Whitten
    • H01L23/58
    • G01R1/07307G01R31/2884G01R31/31723H01L22/32H01L23/50H01L23/60H01L2224/0401H01L2224/05554H01L2224/16H01L2924/00013H01L2924/01079H01L2924/10253H01L2224/29099H01L2924/00
    • One embodiment of the present invention concerns an integrated circuit that includes bond pads and special contact pads or points. The bond pads are for interfacing the integrated circuit as a whole with an external circuit, and are to be bonded to a package or circuit board. The bond pads are disposed on the die in a predetermined alignment such as a peripheral, grid, or lead-on-center alignment. The special contact pads are used to provide external test patterns to internal circuits and/or to externally monitor results from testing the internal circuits. The special contact pads may be advantageously located on the integrated circuit with a high degree of positional freedom. For one embodiment, the special contact pads may be disposed on the die at a location that is not in the same alignment as the bond pads. The special contact pads may be smaller than the bond pads so as not to increase the die size due to the special contact pads. The special contact points may also be used to externally program internal circuits (e.g., nonvolatile circuits) at the die or package level. The special contact points may also be used to select redundant circuits for faulty circuits.
    • 本发明的一个实施例涉及包括接合焊盘和特殊接触焊盘或点的集成电路。 接合焊盘用于将集成电路作为整体与外部电路接口,并且将被连接到封装或电路板。 接合焊盘以预定的对准方式设置在管芯上,例如外围,栅格或中心对准。 特殊接触焊盘用于向内部电路提供外部测试模式和/或外部监测测试内部电路的结果。 特别的接触垫可以有利地以高度的位置自由度位于集成电路上。 对于一个实施例,特殊接触焊盘可以在与焊盘不同于对准的位置处设置在管芯上。 特殊的接触焊盘可以小于接合焊盘,以便不会由于特殊的接触垫而增加管芯的尺寸。 特殊接触点也可以用于在芯片或封装级别外部编程内部电路(例如非易失性电路)。 特殊接触点也可用于选择故障电路的冗余电路。