Pastes for forming a luminescent layer or insulator layer of a dispersion type electroluminescence element and a dispersion type electroluminescence element
申请人:NIPPON KASEI CHEMICAL CO., LTD.
公开号:EP0314507A2
公开(公告)日:1989-05-03
A phosphor paste suitable for forming a luminescent layer of a dispersion type electroluminescence element, which paste has a dielectric constant of not less than 10 at 1 KHz and 25°C after being solidified, and which comprises a pulverized electroluminescent phosphor, an organic high dielectric substance and at least one compound solidifiable by radiation or which comprises a pulverized electroluminescent phosphor and at least one compound solidifiable by radiation, at least one of the solidifiable compounds having a dielectric constant of not less than 10 at 1 KHz and 25°C when solidified;
and a dielectric paste suitable for forming an insulator layer of a dispersion type electroluminescence element, which paste has a dielectric constant of not less than 10 at 1 KHz and 25°C after being solidified, and which comprises at least one high dielectric substance selected from pulverized inorganic high dielectric substances and organic high dielectric substances, and at least one compound solidifiable by radiation or which comprises at least one compound solidifiable by radiation, at least one of the solidifiable compounds having a high dielectric constant after being solidified;
and a dispersion type electroluminescence element which comprises a luminescent layer and an insulator layer disposed between a transparent electrode and a back electrode, the luminescent layer and the insulator layer having been produced by forming a layer having a high dielectric constant when solidified from a high dielectric paste, applying a phosphor paste thereto to form a phosphor paste layer, and solidifying the layers with radiation.
一种适用于形成分散型电致发光元件发光层的荧光粉浆料,该浆料凝固后在 1 KHz 和 25°C 下的介电常数不小于 10,它包括一种粉状电致发光荧光粉、一种有机高介电物质和至少一种可通过辐射固化的化合物,或由一种粉碎的电致发光荧光粉和至少一种可通过辐射固化的化合物组成,其中至少一种可固化的化合物在固化后于 1 KHz 和 25°C 时的介电常数不小于 10;
一种适用于形成分散型电致发光元件绝缘层的介电浆料,该浆料凝固后在 1 KHz 和 25°C 时的介电常数不小于 10,它包括至少一种选自粉碎的无机高介电物质和有机高介电物质的高介电物质,以及至少一种可通过辐射凝固的化合物,或包括至少一种可通过辐射凝固的化合物,其中至少一种可凝固化合物凝固后具有高介电常数;
以及一种分散型电致发光元件,它包括一个发光层和一个绝缘层,该发光层和绝缘层位于一个透明电极和一个背电极之间,该发光层和绝缘层是通过以下方法产生的:用高介电常数浆料形成一个固化后具有高介电常数的层,在该层上涂上荧光粉浆料以形成荧光粉浆料层,然后用辐射使该层固化。