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    Method for fabricating insulated-gate field effect transistors having controlled operating characeristics
    1.
    发明授权
    Method for fabricating insulated-gate field effect transistors having controlled operating characeristics 失效
    用于制造具有控制操作特性的绝缘栅场效应晶体管的方法

    公开(公告)号：US3590477A

    公开(公告)日：1971-07-06

    申请号：US3590477D

    申请日：1968-12-19

    Applicant: IBM

    Inventor： CHEROFF GEORGE ,  HOCHBERG FREDERICK

    IPC: H01L27/088 ,  H01L29/00 ,  B01J17/00 ,  H01G13/00

    CPC classification number: H01L27/088 ,  H01L29/00 ,  Y10S438/91

    Abstract: A method for fabricating electrical circuit components, field effect transistors, for example, in which the operating characteristics of the field effect devices are tailored by eliminating or passivating surface traps along the conduction channel. A layer of an active metal aluminum, for example, is deposited on the surface of an insulator, the latter being disposed in overlying relationship with the surface of a field effect transistor which has spaced source and drain regions. The active metal is disposed between the source and drain region. The transistor is subjected to heating for a time and temperature sufficient to passivate or eliminate surface traps. By heating for a temperature in a specified range, varying degrees of passivation can be attained. Heating in the absence of metallization does not alter the operating characteristics of the insulated gate field effect transistor.

    3.
    发明专利
    未知

    公开(公告)号：FR2296474A1

    公开(公告)日：1976-07-30

    申请号：FR7536065

    申请日：1975-11-19

    Applicant: IBM

    Inventor： HOCHBERG FREDERICK ,  PENNINGTON KEITH S

    IPC: B41J2/015 ,  B41J2/21 ,  B41J2/215 ,  G03G19/00 ,  H04N1/23 ,  B05D1/02 ,  B05B17/00 ,  B41J3/04 ,  B41J27/18

    Abstract: 1489679 Printing INTERNATIONAL BUSINESS MACHINES CORP 15 Oct 1975 [31 Dec 1974] 42146/75 Heading B6C A method of marking a substrate comprises contacting the substrate with a micromist containing magnetically attractable material i.e. a mist whose particle size is such as not to wet the substrate in the absence of an applied magnetic field, and applying a magnetic field pattern to deposit material The micromist may be produced by ultrasonic vibration. The magnetic field may be generated in known fashion by selective heads adjacent the substrate printed on the side opposite the micromist, or by using selectively energizable heads to produce the pattern on a roller or endless band adjacent this side. Alternatively, a magnetized endless band may be exposed to the micromist, and the pattern formed thereon transferred to the final substrate.

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