Negative resistance device with controllable switching
    1.
    发明授权
    Negative resistance device with controllable switching 失效
    具有可控制开关的负极电阻装置

    公开(公告)号:US3569799A

    公开(公告)日:1971-03-09

    申请号:US3569799D

    申请日:1967-01-13

    Applicant: IBM

    Abstract: This disclosure provides a control feature for a solid state device which has a negative resistance characteristic in the current-voltage curve due to an insulator in the current path. A negative resistance device is fabricated by planar technology to have an insulator layer interposed between a semiconductor layer and a metal layer in the negative resistance current path. The control feature is provided through a control electrode which has a lateral junction in the semiconductor layer and near to the current path through the insulator layer. Control voltage pulses of opposite polarities applied to the control electrode obtain switching between stable states of the device in both directions without a requirement of turning off the current.

    Process for making mosfet's
    4.
    发明授权
    Process for making mosfet's 失效
    制造MOSFET的工艺

    公开(公告)号:US3679492A

    公开(公告)日:1972-07-25

    申请号:US3679492D

    申请日:1970-03-23

    Applicant: IBM

    Abstract: A PROCESS FOR PREPARING METAL-OXIDE SEMICONDUCTOR DEVICES (MOSFET''S) USING ION IMPLANATION IS DESCRIBED WHEREIN ALUMINUM SOURCE AND DRAIN CONTACTS ARE ADDED AFTER ION IMPLANTATION THROUGH A HIGHLY REFRECATORY METAL GATE SO THAT VERY HIGH TEMPERATURE ANNEALING CAN BE USED. IF THE ALUMINUM CONTACTS ARE PUT DOWN BEFORE THE HIGH TEMPERATURE ANNEALING, NOT ONLY DOES A REACTION BETWEEN THE ALUMINUM AND THIN OXIDE CHANNEL REGION OF THE MOSFET OCCUR, BUT OHMIC CONTACTS AT THE SOURCE AND DRAIN DETERIORATE, RESULTING IN DEFECTIVE DEVIES.

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