JPS6151796A - Dispersive el element - Google Patents
Dispersive el elementInfo
- Publication number
- JPS6151796A JPS6151796A JP59173642A JP17364284A JPS6151796A JP S6151796 A JPS6151796 A JP S6151796A JP 59173642 A JP59173642 A JP 59173642A JP 17364284 A JP17364284 A JP 17364284A JP S6151796 A JPS6151796 A JP S6151796A
- Authority
- JP
- Japan
- Prior art keywords
- pigment
- types
- mixture
- fluorescent powder
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、有機分散ＷＥＬ素子に関するものであり、種
々の発光色をもつ有機分散型ＥＬ素子を可能とするもの
である。本発明のＥＬ素子は、様々な色の照明用光源や
表示素子用光源として用いることができる。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an organically dispersed WEL device, and enables organically dispersed EL devices that emit light of various colors. The EL element of the present invention can be used as a light source for illumination of various colors and a light source for display elements.
従来例の構成とその問題点
有機分散型ＥＬ素子の発光色は使用する螢光粉体によっ
てき凍る。たとえば、ＺｎＳ ： Ｃｕ 、 ＡＩ系又
はＺｎＳ ： Ｃｕ 、 Ｂｒ系では緑色、ＺｎＳ：Ｃ
ｕ系では青色、ＺｎＳ：Ｃｕ、Ｍｎでは橙色の発光が得
られる。Conventional Structure and Problems The color of light emitted by an organic dispersion type EL element depends on the fluorescent powder used. For example, ZnS: Cu, AI system or ZnS: Cu, Br system is green, ZnS:C
U-based light emits blue light, and ZnS:Cu and Mn light emit orange light.
しかし、用途により、上記の色の他に、白色や様々な色
が望まれる。この目的のために、従来より、異なる発光
スペクトルをもつ螢光粉体を２種又は３種用いる方法が
知られている。しかし、この方法によって得られる発光
色には限りがある。一般に青色と赤色の螢光粉体は緑色
螢光体に比べて低輝度であり、高輝度で各種の発光色を
得ることは、上記の方法では困難であった。However, depending on the purpose, white or various other colors may be desired in addition to the above-mentioned colors. For this purpose, a method is conventionally known in which two or three types of fluorescent powders having different emission spectra are used. However, the luminescent colors that can be obtained by this method are limited. In general, blue and red fluorescent powders have lower brightness than green fluorescent powders, and it has been difficult to obtain various luminescent colors at high brightness using the above methods.
発明の目的
本発明は、上記の欠点を除去し、各種の発光色の得られ
る高輝度の有機分散型ＥＬ素子を提供するものである。OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned drawbacks and provides a high-luminance organic dispersion type EL device that can emit light of various colors.
更に本発明は、非発光時のＥＬ素子の色を各種選択でき
る有機分散型ＥＬ素子を提供するものである。Furthermore, the present invention provides an organic dispersion type EL element that allows various colors to be selected for the EL element when it is not emitting light.
発明の構成
本発明は、螢光粉体、“有機結合剤および顔料の混合物
を発光層とする分散型ＥＬ素子において、螢光体が互い
に独立の発光スペクトルを持つ少なくとも２種類の螢光
粉体の混合物からなるかあるいは顔料が光学的性質の異
なる少なくとも２種類の顔料の混合物からなることを特
徴とする。Structure of the Invention The present invention provides a dispersion type EL device having a luminescent layer made of a mixture of fluorescent powder, an organic binder, and a pigment, in which the phosphor comprises at least two types of fluorescent powder having mutually independent emission spectra. or a mixture of at least two pigments having different optical properties.
実施例の説明 異なる発光スペクトルを持つ２種類の螢光粉体。Description of examples Two types of fluorescent powder with different emission spectra.
即ち、緑色発光するＺｎＳ ： Ｃｕ 、 ＡＩ系螢光
粉体と。That is, ZnS:Cu, AI-based fluorescent powder emits green light.
青色発光するＺｎＳ ： Ｃｕ系螢光粉体、及び顔料と
してローダミンＧを重量比で９０：１０：０．０１の割
合にしたものをシアノエチルセルロースのアセトン溶液
に分散させ、これを透明電極層付きのガラス基板上に塗
布し発光層とした。なお、螢光体と７７／エチルセルロ
ースの配合比は体積比で１対１とした。更に、シアンエ
チルセルロースのアセトン溶液に酸化チタン粉末を分散
させたものを塗布し絶Ｒ層を形成したのち、金属電極を
蒸着してＥＬ素子とした。この素子は１ＫＨｚ 、 １
ｏｏｖの交流電界を印加した結果、白色の発光を得た
。Blue-emitting ZnS:Cu-based fluorescent powder and rhodamine G as a pigment in a weight ratio of 90:10:0.01 were dispersed in an acetone solution of cyanoethyl cellulose, and this was dispersed into a transparent electrode layer-coated plate. It was applied onto a glass substrate to form a light-emitting layer. The blending ratio of the phosphor and 77/ethylcellulose was 1:1 by volume. Further, a dispersion of titanium oxide powder in an acetone solution of cyanethyl cellulose was applied to form an extremely round layer, and then a metal electrode was vapor deposited to obtain an EL element. This element is 1KHz, 1
As a result of applying an alternating current electric field of oov, white light emission was obtained.
ＺｎＳ ： Ｃｕ 、 ＡＩ系は輝度の高い螢光体であ
り、本発明では、高輝度の粉体の使用比率を大きくした
素子構成で白色発光が得られるため、高輝度が得られる
。また、本発明の構成では、螢光粉体の種類が同じ状態
で、顔料の添加量によって、種々の発光色が得られる。The ZnS:Cu, AI system is a phosphor with high brightness, and in the present invention, white light emission can be obtained with an element configuration in which the ratio of high-brightness powder used is increased, so that high brightness can be obtained. Further, with the configuration of the present invention, various luminescent colors can be obtained by changing the amount of pigment added even when the type of fluorescent powder is the same.
なお、実施例では、螢光粉体は２種であるが、３種以上
でもよい。また、顔料も２種以上用いてもよい。一方、
１種類の螢光粉体に２種以上の顔料を用いてもよい。In the examples, two types of fluorescent powder are used, but three or more types may be used. Further, two or more kinds of pigments may be used. on the other hand,
Two or more types of pigments may be used in one type of fluorescent powder.
顔料を含むＥＬ素子は、電界を印加しないときには、顔
料固有の色を呈するが、本発明では、顔料を２種以上組
合せることによシ、ＥＬ素子の非発光時の色を任意に選
ぶことができる。An EL element containing a pigment exhibits a color unique to the pigment when no electric field is applied, but in the present invention, by combining two or more types of pigments, the color of the EL element when not emitting light can be arbitrarily selected. Can be done.
発明の効果Effect of the invention
Claims (3)
光層とし、前記螢光粉体が互いに独立の発光スペクトル
を持つ少なくとも２種類の螢光粉体の混合物からなるこ
とを特徴とする分散型ＥＬ素子。(1) The luminescent layer is a mixture of a fluorescent powder, an organic binder, and a pigment, and the fluorescent powder is composed of a mixture of at least two types of fluorescent powders having mutually independent emission spectra. Distributed EL element.
料の混合物からなることを特徴とする特許請求の範囲第
１項の記載の分散型ＥＬ素子。(2) The dispersion type EL device according to claim 1, wherein the pigment is made of a mixture of at least two types of pigments having different optical properties.
層とし、顔料が光学的性質の異なる少なくとも２種類の
顔料の混合物からなることを特徴とする分散型ＥＬ素子
。(3) A dispersion type EL device, characterized in that the light-emitting layer is a mixture of fluorescent powder, an organic binder, and a pigment, and the pigment is a mixture of at least two types of pigments having different optical properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59173642A JPS6151796A (en) | 1984-08-21 | 1984-08-21 | Dispersive el element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59173642A JPS6151796A (en) | 1984-08-21 | 1984-08-21 | Dispersive el element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6151796A true JPS6151796A (en) | 1986-03-14 |
Family
ID=15964392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59173642A Pending JPS6151796A (en) | 1984-08-21 | 1984-08-21 | Dispersive el element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6151796A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0295197U (en) * | 1989-01-13 | 1990-07-30 | ||
| JPH097764A (en) * | 1995-06-21 | 1997-01-10 | Seikosha Co Ltd | El element |
-
1984
- 1984-08-21 JP JP59173642A patent/JPS6151796A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0295197U (en) * | 1989-01-13 | 1990-07-30 | ||
| JPH097764A (en) * | 1995-06-21 | 1997-01-10 | Seikosha Co Ltd | El element |
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