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    LUMINESCENT ELEMENT
    1.
    发明专利
    LUMINESCENT ELEMENT 失效

    公开(公告)号：JPH1069982A

    公开(公告)日：1998-03-10

    申请号：JP16557197

    申请日：1997-06-23

    Applicant: IBM

    Inventor： GORDON JOSEPH GROVER ,  SIEGFRIED FRIEDRICH KARUKU ,  JAMES HARVEY KAUFMAN ,  MARTIN KURAIENSHIYUMITSUTO ,  ROBERT DENNIS MILLER ,  JOHN CAMPBELL SCOTT

    IPC: C09K11/06 ,  H01L51/50 ,  H05B33/10 ,  H05B33/12 ,  H05B33/14

    Abstract: PROBLEM TO BE SOLVED: To obtain an improved electric field luminescent element by containing a luminescent composition including a charge carrier polymer, a negative ion, and a positive ion between first and second electrodes. SOLUTION: This luminescent element is located between a non-translucent electrode 4 and a translucent electrode 6 and contains a luminescent composition 2 into contact with these electrodes 4 and 6. This element is supported on a glass base 8, when a voltage is applied to the electrodes 4 and 6 light is emitted from a composition 2 and radiated from the element through the electrode 6 and the base 8. This composition 2 contains a charge carrier polymer and a salt including negative and positive ions. The positive and negative ions are fixed in a polymer matrix during manufacturing of the element, provided with non-uniform space distribution in the composition 2, and forms a constant density gradient at each electrode, however, a negative ion density is higher at the electrode 4, and a positive ion density is higher at the electrode 6. Since non- uniform distribution of ions in the polymer matrix is fixed, the element can emit light within 10 milliseconds after a voltage is applied to the electrodes 4 and 6.

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