24.
    发明专利
    未知

    公开(公告)号:DE69530978T2

    公开(公告)日:2004-04-22

    申请号:DE69530978

    申请日:1995-08-01

    Inventor: BALDI LIVIO

    Abstract: A pixel emission current limiting resistance is realized by forming a stack of alternately doped amorphous or polycrystalline silicon layers over the cathodic conductors of a FED driving matrix. The stack of amorphous or polycrystalline silicon layers doped alternately n and p provides at least a reversely biased n/p junction having a leakage current that matches the required level of pixel emission current. The reversely biased junction constitutes a nonlinear series resistance that is quite effective in limiting the emission current through anyone of the microtips that form an individually excitable pixel and which are formed on the uppermost layer of the stack.

    27.
    发明专利
    未知

    公开(公告)号:DE69722403T2

    公开(公告)日:2004-01-15

    申请号:DE69722403

    申请日:1997-09-23

    Inventor: BALDI LIVIO

    Abstract: The present invention relates to a currency note (BN) provided with an identification and/or authentication element consisting of an integrated circuit (IC) which can store, securely in electronic form, accessible from outside, such information as: the value, serial number, issuer, and date of issuance.

    29.
    发明专利
    未知

    公开(公告)号:DE69530978D1

    公开(公告)日:2003-07-10

    申请号:DE69530978

    申请日:1995-08-01

    Inventor: BALDI LIVIO

    Abstract: A pixel emission current limiting resistance is realized by forming a stack of alternately doped amorphous or polycrystalline silicon layers over the cathodic conductors of a FED driving matrix. The stack of amorphous or polycrystalline silicon layers doped alternately n and p provides at least a reversely biased n/p junction having a leakage current that matches the required level of pixel emission current. The reversely biased junction constitutes a nonlinear series resistance that is quite effective in limiting the emission current through anyone of the microtips that form an individually excitable pixel and which are formed on the uppermost layer of the stack.

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