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    Electroluminescent laminate with thick film dielectric
    72.
    发明专利
    Electroluminescent laminate with thick film dielectric 未知

    公开(公告)号：HK1002845A1

    公开(公告)日：1998-09-18

    申请号：HK98101573

    申请日：1998-02-27

    Applicant: WESTAIM TECHNOLOGIES INC

    Inventor： WU XINGWEI ,  STILLES JAMES ALEXANDER ROBERT ,  FOO KEN KOK ,  BAILEY PHILIP

    IPC: H05B33/10 ,  H05B33/12 ,  H05B33/22 ,  H05B33/26 ,  H05B33/28 ,  H05B

    Abstract: An electroluminescent laminate is provided that comprises: a planar phosphor layer (22); a front and a rear planar electrode (14,24) on either side of the phosphor layer; a planar dielectric layer, which is preferably composed of a thick layer (18) and a thin layer (20), between the rear electrode and the phosphor layer, the dielectric layer being formed from sintered ceramic material such that the dielectric layer provides a dielectric strength S which is greater than about 1.0 X 106 V/m and a dielectric constant such that the ratio of the dielectric constant of the dielectric layer to that of the phosphor layer is greater than about 50:1, the dielectric layer having a thickness sufficient to prevent dielectric breakdown during operation as determined by the equation d2 = V/S, wherein d2 is the thickness of the dielectric layer and V is the maximum applied voltage, the dielectric layer forming a surface adjacent the phosphor layer which is sufficiently smooth that the phosphor layer illuminates generally uniformly at a given excitation voltage, and wherein the dielectric layer is either in contact with the phosphor layer or spaced apart from it by at least one additional layer that is itself in contact with the phosphor layer and wherein the layer that is in contact with the phosphor layer is compatible with the phosphor layer.

    A PROCESS FOR LASER SCRIBING AND ELECTROLUMINESCENT LAMINATEWITH LASER SCRIBING ADDRESS LINES
    80.
    发明专利
    A PROCESS FOR LASER SCRIBING AND ELECTROLUMINESCENT LAMINATEWITH LASER SCRIBING ADDRESS LINES 未知

    公开(公告)号：CA2214044A1

    公开(公告)日：1993-11-25

    申请号：CA2214044

    申请日：1993-05-06

    Applicant: WESTAIM TECHNOLOGIES INC

    Inventor： WU XINGWEI ,  BAILEY PHILLIP ,  FOO KEN KOK ,  STILES JAMES ALEXANDER ROBERT

    IPC: H05B33/10 ,  H05B33/12

    Abstract: An improved dielectric layer of an electroluminescent laminate, and method of preparation are provided. The dielectric layer is formed as a thick layer from a sintered ceramic material to provide: - a dielectric strength greater than about 1.0 X 106 V/m; - a dielectric constant such that the ratio of the dielectric constant of the dielectric layer to that of the phosphor layer is greater than about 50:1; - a thickness such that the ratio of the thickness of the dielectric layer to that of the phosphor layer is in the range of about 20:1 to 500:1; and - a surface in contact with the phosphor layer which is compatible with the phosphor layer and sufficiently smooth that the phosphor layer illuminates generally uniformly at a given excitation voltage. The invention also provides for electrical connection of an electroluminescent laminate to voltage driving circuity with through hole technology. The invention also extends to laser scribing the transparent conductor lines of an electroluminescent laminate.

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