JP2779373B2 - EL element - Google Patents
EL elementInfo
- Publication number
- JP2779373B2 JP2779373B2 JP5070240A JP7024093A JP2779373B2 JP 2779373 B2 JP2779373 B2 JP 2779373B2 JP 5070240 A JP5070240 A JP 5070240A JP 7024093 A JP7024093 A JP 7024093A JP 2779373 B2 JP2779373 B2 JP 2779373B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- layer
- fluorescent pigment
- luminance
- luminous
- 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.)
- Expired - Lifetime
Links
- 239000000049 pigment Substances 0.000 claims description 32
- 239000002245 particle Substances 0.000 claims description 12
- 238000013329 compounding Methods 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 125000001731 2-cyanoethyl group Chemical group [H]C([H])(*)C([H])([H])C#N 0.000 description 2
- 239000005083 Zinc sulfide Substances 0.000 description 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- ZQXCQTAELHSNAT-UHFFFAOYSA-N 1-chloro-3-nitro-5-(trifluoromethyl)benzene Chemical compound [O-][N+](=O)C1=CC(Cl)=CC(C(F)(F)F)=C1 ZQXCQTAELHSNAT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000004373 Pullulan Substances 0.000 description 1
- 229920001218 Pullulan Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＥＬ素子に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an EL device.
【０００２】[0002]
【従来の技術】ＥＬ素子の構成は、発光層と誘電体層と
を透明電極と背面電極との間に介在させ、両電極の上下
にポリアミドフィルム等からなる捕水フィルムをラミネ
ートし、更にこの上下に防湿フィルムをラミネートし、
その外周部を熱圧着して封止している。2. Description of the Related Art The structure of an EL element is such that a light emitting layer and a dielectric layer are interposed between a transparent electrode and a back electrode, and a water catching film made of a polyamide film or the like is laminated above and below both electrodes. Laminate the moisture-proof film on the top and bottom,
The outer peripheral portion is sealed by thermocompression.
【０００３】従来においては、ＥＬ素子の輝度向上は、
主として発光層中に含まれる発光体自体の発光特性や発
光体バインダーの誘電率などを改善することによって得
られており、更には透明電極となる透明導電フィルム及
び防湿フィルムの光透過率を改善することによって達成
されている。Conventionally, the luminance of an EL element has been improved by
It is mainly obtained by improving the luminous characteristics of the luminous body itself contained in the luminous layer itself and the dielectric constant of the luminous body binder, and further improves the light transmittance of the transparent conductive film and the moisture-proof film which become the transparent electrode. Has been achieved by that.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
ような輝度改善策が図られているとは言っても、公知の
ＥＬ素子では、小容量の電池エネルギを使用する腕時計
等の機器に用いた場合など、限られた電池エネルギのも
とでは実用上十分な輝度が得られないと言うのが実情で
ある。However, although the above-described brightness improvement measures have been taken, known EL elements have been used in devices such as wristwatches that use a small amount of battery energy. In some cases, practically sufficient luminance cannot be obtained under limited battery energy.
【０００５】そこで本発明の目的は、限られた電池エネ
ルギのもとでも十分な発光輝度を得ることができるＥＬ
素子を提供することにある。Accordingly, an object of the present invention is to provide an EL device capable of obtaining sufficient light emission luminance even under limited battery energy.
It is to provide an element.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明のＥＬ素子は、透明電極と背面電極との間に
発光体を含有する発光層と誘電体層とが介在してなり、
上記発光層における上記発光体の配合比を８２．０Wt％
〜８５．０Wt％とし、上記発光層中の上記発光体の平均
粒径を２１μｍ以下としたＥＬ素子において、発光層に
イエロー，グリーン，オレンジのいずれか１の蛍光顔料
を１．９Wt％以下の範囲で添加したことを特徴としてい
る。Means for Solving the Problems To achieve the above object, the EL device of the present invention does not have a light emitting layer containing a light emitting body and a dielectric layer interposed between a transparent electrode and a back electrode. And
The compounding ratio of the luminous body in the luminous layer is 82.0 Wt%
８５85.0 Wt%, and the average of the luminescent materials in the luminescent layer
In EL devices than 21μm particle size, <br/> the light emitting layer i e low, green, is characterized in that any one of the fluorescent pigments of orange were added in a range of less than 1.9 wt%.
【０００７】[0007]
【作用】交番電界を印加すると、発光層の中の発光体が
光を発し、その光を受けて発光層に添加されている蛍光
顔料が蛍光を発する。したがって、発光体の光と蛍光顔
料の蛍光とが相俟ってＥＬ素子は高い輝度で発光する。When an alternating electric field is applied, the luminous body in the light emitting layer emits light, and the fluorescent pigment added to the light emitting layer emits fluorescence upon receiving the light. Therefore, the EL element emits light with high luminance due to the combination of the light of the light emitter and the fluorescence of the fluorescent pigment.
【０００８】[0008]
【実施例】図１に示すように、透明電極である透明導電
フィルム１上には発光層２が形成してあり、発光層２の
上には誘電体層３が形成してある。誘電体層３は、チタ
ン酸バリウム粉等を高誘電バインダに混練したものを使
用して印刷乾燥して形成したものである。誘電体層３の
上には背面電極４が形成してある。背面電極４は、カー
ボン粉をバインダに混練してなる導電ペーストを使用し
て印刷乾燥して形成したものである。背面電極４の上に
は、吸湿性の樹脂とバインダとからなる吸湿ペーストを
印刷乾燥してなる吸湿層５が形成してある。そして、透
明導電フィルム１と背面電極４の外側を覆う三フッ化ポ
リ塩化エチレン等の透明な防湿フィルム６，６が、その
外周部で熱圧着により封止されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a light emitting layer 2 is formed on a transparent conductive film 1 which is a transparent electrode, and a dielectric layer 3 is formed on the light emitting layer 2. The dielectric layer 3 is formed by printing and drying a material obtained by kneading barium titanate powder or the like with a high dielectric binder. A back electrode 4 is formed on the dielectric layer 3. The back electrode 4 is formed by printing and drying using a conductive paste obtained by kneading carbon powder into a binder. On the back electrode 4, a moisture absorbing layer 5 is formed by printing and drying a moisture absorbing paste composed of a hygroscopic resin and a binder. Then, transparent moisture-proof films 6 and 6 made of, for example, poly (ethylene chloride) trifluoride, which cover the outside of the transparent conductive film 1 and the back electrode 4, are sealed by thermocompression at the outer peripheral portions.
【０００９】ところで、発光層２は、一般には、硫化亜
鉛等の発光体２ａをシアノエチル化セルロース等の高誘
電バインダに混練したものを印刷乾燥して形成されるも
のであるが、本発明ではさらに適量の蛍光顔料２ｂが添
加されている。そこでより具体化した実施例について説
明する。The light emitting layer 2 is generally formed by kneading a light emitting body 2a such as zinc sulfide and the like with a high dielectric binder such as cyanoethylated cellulose and printing and drying the mixture. An appropriate amount of the fluorescent pigment 2b is added. Therefore, a more specific embodiment will be described.
【００１０】つぎの組成の発光インクと誘電体インクと
によりそれぞれ形成した発光層２と誘電体層３とを有す
るサンプルＡのＥＬ素子を作成した。なお、このサンプ
ルＡにおいて、発光層中の発光体の配合比は８２．７％
であり蛍光顔料の添加量は０．７Wt％である。An EL device of Sample A having a light emitting layer 2 and a dielectric layer 3 formed with a light emitting ink and a dielectric ink having the following compositions, respectively, was prepared. In this sample A, the mixing ratio of the luminous body in the luminous layer was 82.7%.
The addition amount of the fluorescent pigment is wherein a 0.7 wt%.
【００１１】 発光インクの組成 発光体 ：硫化亜鉛５０ｇ（平均粒径２０μｍ） 高誘電バインダ ：１０ｇ シアノエチルポリビニールアルコール：シアノエチルプルラン：プロピレ ンカーボネート（溶媒）＝２：８：２５（重量比） 蛍光顔料（イエロー）：０．４２５ｇ 誘電体インクの組成 誘電体 ：チタン酸バリウム６０ｇ 高誘電バインダ ：３５ｇ（発光インクのバインダの組成に同じ） このサンプルＡを、出力２８ＶrmS ×３ｋHzのインバー
タ回路を用い、発光面積４．９cm2 で発光させたとこ
ろ、２２cd／ m2 の輝度が得られた。そこで、本発明の
ＥＬ素子の発光輝度を、蛍光顔料を添加していない従来
のものと比較するため、下記の表１に示すサンプルＢ，
Ｃを作成し、上記と同じ条件で発光させて表２の測定結
果を得た。Composition of luminescent ink Luminescent body: 50 g of zinc sulfide (average particle size: 20 μm) High dielectric binder: 10 g Cyanoethyl polyvinyl alcohol: cyanoethyl pullulan: propylene carbonate (solvent) = 2: 8: 25 (weight ratio) Fluorescent pigment (Yellow): 0.425 g Composition of dielectric ink Dielectric: 60 g of barium titanate High dielectric binder: 35 g (same as the composition of the binder of the luminescent ink) This sample A was illuminated using an inverter circuit having an output of 28 VrmS × 3 kHz. When light was emitted in an area of 4.9 cm 2 , a luminance of 22 cd / m 2 was obtained. Therefore, the emission brightness of the EL element of the present invention, for comparison with the conventional one without the addition of fluorescent pigment, the sample B shown in Table 1 below,
C was prepared and emitted under the same conditions as above, and the measurement results in Table 2 were obtained.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【表２】 [Table 2]
【００１４】表２から明らかであるように、本発明のサ
ンプルＡは、輝度においてサンプルＢに対して６９％向
上し、サンプルＣに対して２２％向上している。また消
費電流も最低である。As is clear from Table 2, Sample A of the present invention has a 69% improvement in luminance over Sample B and a 22% improvement over Sample C in brightness. The current consumption is also minimal.
【００１５】つぎに発光層中の蛍光顔料の添加量に対す
る発光輝度および色合の関係について説明する。[0015] Next will be described the relationship of the emission brightness and hue to the addition amount of fluorescent pigment in the light-emitting layer.
【００１６】蛍光顔料がイエローのときはつぎの通りで
ある。蛍光顔料の添加量を順次変えていって発光輝度を
測定した結果によれば、添加量が１．５Wt％までは輝度
は急激に上昇し、添加量の増加とともに発光輝度も増加
するが、添加量が１．９Wt％を越えると発光輝度の上昇
は緩やかになってゆくことが判明した。[0016] The fluorescent pigments are as follows when Lee et low. According to the result of measuring the emission luminance by sequentially changing the addition amount of the fluorescent pigment, the luminance sharply increases up to the addition amount of 1.5 Wt%, and the emission luminance increases with the addition amount. It was found that when the amount exceeded 1.9 Wt%, the increase in light emission luminance became gentle.
【００１７】このように、蛍光顔料の添加量が増加して
いくにつれて発光輝度も増加していく。しかしながら、
添加量が多くなると、発光層２の発光色や非発光状態に
おける素地の色に影響を与えるようになる。As described above, the emission luminance increases as the amount of the fluorescent pigment added increases. However,
When the amount of addition increases, the luminescent color of the luminescent layer 2 and the color of the substrate in a non-luminescent state are affected.
【００１８】すなわち、添加量がゼロの場合には発光色
はブルーグリーンであり、これが本来の色である。しか
し、イエローの蛍光顔料を添加するにつれて発光色は変
化していく。添加量が０．７Wt％まではブルーグリーン
の発光色であるが、添加量が０．７Wt％から１．５Wt％
までの間はグリーンの発光色となり、１．５Wt％を過ぎ
ると次第にイエローグリーンに変わってゆく。先に述べ
たように、通常のＥＬ素子の発光色はブルー，ブルーグ
リーン，グリーンであるので、本発明においてもこの発
光色を変えないようにするには、イエローの蛍光顔料の
添加量は１．５Wt％までが好ましい。しかし実用上の観
点からすれば、１．９Wt％添加してもグリーンに近い発
光色であり、実用上では使用可能であることが種々の実
験から判明した。That is, when the addition amount is zero, the emission color is blue green, which is the original color. However, the emission color as the addition of fluorescent pigment yellow will change. The emission color is blue green when the addition amount is 0.7 Wt%, but the addition amount is 0.7 Wt% to 1.5 Wt%.
Until this time, the color becomes green, and after 1.5 Wt%, the color gradually changes to yellow-green. As previously mentioned, the emission color of a normal EL element Blue, blue green, because green, also so as not to change the emission color in the present invention, the amount of fluorescent pigment yellow Up to 1.5 Wt% is preferred. However, from a practical point of view, it has been found from various experiments that the emission color is close to green even when 1.9 Wt% is added, and that it can be used in practical use.
【００１９】蛍光顔料の添加は、発光層２の非発光状態
における素地そのものの色にも影響を与える。添加量が
ゼロの場合には非発光状態における素地の色はアイボリ
ーであり、これが本来の色である。しかし、イエローの
蛍光顔料を添加するにつれて非発光状態における素地の
色は変化していく。添加量が１．５Wt％まではイエロー
アイボリーの中間色を呈するが、１．５Wt％を過ぎると
次第にイエローに変わってゆく。先に述べたように、通
常のＥＬ素子の非発光状態における素地の色はアイボリ
ーであるので、本発明においてもこの非発光色を変えな
いようにするには、イエローの蛍光顔料の添加量は１．
５Wt％までが好ましい。しかし実用上の観点からすれ
ば、添加量１．９Wt％位までは実用上の使用は十分に可
能であることが確認された。The addition of the fluorescent pigment also affects the color of the substrate itself in the non-light emitting state of the light emitting layer 2. When the addition amount is zero, the base color in the non-light emitting state is ivory, which is the original color. But yellow
The color of green body during the non-emitting state as the addition of fluorescent pigments will change. When the added amount is up to 1.5 Wt%, the intermediate color of yellow ivory is exhibited, but after 1.5 Wt%, the color gradually changes to yellow. As mentioned earlier, since the color of the green body in a non-emission state of the conventional EL element is ivory, to prevent changing the non-emission color in the present invention, the amount of fluorescent pigment yellow Is 1.
Up to 5 Wt% is preferred. However, from a practical point of view, it was confirmed that practical use is sufficiently possible up to an addition amount of about 1.9 Wt%.
【００２０】つぎに、発光層中へ添加する蛍光顔料の素
材を変えて、蛍光顔料の種類と輝度との関係を調べた。
いずれも発光体の平均粒径を２０μｍとし、発光体の配
合比は８２．７Wt％であり、蛍光顔料の添加量は０．７
Wt％である。Next, by changing the material of the fluorescent pigment to be added to the light-emitting layer was investigated the relationship between the fluorescent pigment type and intensity.
Both the average particle diameter of the luminous body and 20 [mu] m, compounding ratio of the emitters is 82.7Wt%, the addition amount of the fluorescent pigment is 0.7
Wt%.
【００２１】図２は、横軸を発光スペクトルの主ピーク
波長（ｎｍ）とし、縦軸を蛍光顔料無添加を１００％と
した輝度比（％）とし、蛍光顔料を変えて発光させたと
きのの輝度比の測定結果を示すものである。[0021] FIG. 2, the horizontal axis represents the main peak wavelength of the emission spectrum (nm), the vertical axis luminance ratio as a fluorescence pigment no addition as 100% and (%), light is emitted by changing the fluorescent pigment 9 shows the measurement results of the luminance ratio at the time.
【００２２】図２の線ａ，ｂから明らかなように、イエ
ローの蛍光顔料を添加した場合には輝度比が１２５％と
最も効果的であり、グリーンの蛍光顔料を添加した場合
には１１０％、オレンジの蛍光顔料を添加した場合には
１０８％と効果があることが確認された。しかし、ブル
ー，ピンクの蛍光顔料は、それを添加すると輝度比が５
０％位まで著しく低下し、使用に適していないことが判
明した。As is clear from the lines a and b in FIG. 2, the luminance ratio is most effective when the yellow fluorescent pigment is added, 125%, and 110% when the green fluorescent pigment is added. When an orange fluorescent pigment was added, the effect was confirmed to be 108%. However, the blue and pink fluorescent pigments have a luminance ratio of 5 when added.
It was remarkably reduced to about 0%, which proved to be unsuitable for use.
【００２３】また、一般には発光体の平均粒径は２４〜
２６μｍのものが使用されているが、ＥＬ素子の発光輝
度には発光体の粒径も関係することが実験により確認さ
れた。In general, the luminous body has an average particle size of 24 to
Although the one having a size of 26 μm is used, it has been confirmed by experiments that the emission luminance of the EL element is related to the particle diameter of the luminous body.
【００２４】発光層中の発光体の配合比を一定として、
発光体の平均粒径を順次変えて発光させてその輝度を測
定した結果によれば、粒径が小さい程高い発光輝度を得
ることができ、平均粒径が２１μｍより大きくなると輝
度が急激に低下することが判明した。そこで、本発明で
は、前述の実施例に示す通り、ふるいにより分級して平
均粒径２１μｍ以下の発光体を用いたのである。With the compounding ratio of the luminous body in the luminescent layer constant,
According to the result of measuring the luminance by emitting light while sequentially changing the average particle diameter of the luminous body, it is possible to obtain a high luminous luminance as the particle diameter is smaller, and the luminance sharply decreases when the average particle diameter is larger than 21 μm. It turned out to be. Therefore, in the present invention, as shown in the above-described embodiment, a luminous body classified by a sieve and having an average particle diameter of 21 μm or less is used.
【００２５】さらに、発光層中の発光体の配合比も発光
輝度に関係する。配合比を変えて発光輝度を測定した結
果によれば、配合比が８２．０Wt％〜８５．０Wt％の間
で高い発光輝度が得られることが確認された。Further, the mixing ratio of the luminous body in the luminous layer is also related to the luminance. According to the result of measuring the light emission luminance while changing the compounding ratio, it was confirmed that high light emitting luminance was obtained when the compounding ratio was between 82.0 Wt% and 85.0 Wt%.
【００２６】[0026]
【発明の効果】以上に説明したように、本発明では、発
光層中の発光体の配合比が８２．０Wt％〜８５．０Wt％
であるので、発光輝度を向上させるのに効果的であり、
この発光体の平均粒径が２１μｍ以下であるので、発光
輝度を向上させるのに一層効果がある。更にその上に、
発光層にイエローの蛍光顔料を１．９Wt％以下の範囲で
添加しているので、これまでのＥＬ素子の発光色及び非
発光状態の素地の色を殆ど変化させないで従来に比して
一段と輝度を向上させることができるばかりでなく、消
費電流も少なくできる。換言すれば、従来と同等の輝度
を得るにはＥＬ素子への入力電力が小さくて済むので、
小容量の電池エネルギーを使用する腕時計等の機器に用
いる場合にも十分な輝度が得られるという顕著な効果が
ある。 また、イエローの蛍光顔料に代えてグリーン、オ
レンジのいずれか１の蛍光顔料を０．７Wt％添加して
も、上記と同様な効果が得られる。 As described above, according to the present invention, the present invention, 82.0Wt the mixing ratio of the light emitters emitting <br/> optical layer% ~85.0Wt%
Since it is, Ri effectively der to improve the emission luminance,
The average particle diameter of this light emitter is less than 21 [mu] m, there is more effective in improving the light emission luminance. In addition,
Yellow fluorescent pigment in the light emitting layer in the range of 1.9 Wt% or less
Since it is added, the emission color of the EL element and the
The color of the light emitting substrate is hardly changed
Not only can the brightness be further improved,
Current consumption can be reduced. In other words, the same brightness as before
Since the input power to the EL element can be small to obtain
For devices such as watches that use small battery energy
Remarkable effect that sufficient brightness can be obtained even when
is there. Also, instead of the yellow fluorescent pigment, green and
Add 0.7Wt% of any one of the fluorescent pigments in the range
Also has the same effect as described above.
【図１】本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】添加する蛍光顔料の種類と輝度比との関係を示
す図である。2 is a diagram showing a relationship between the fluorescence pigment type and luminance ratio to be added.
１ 透明電極 ２ 発光層 ２ａ 発光体 ２ｂ 蛍光顔料 ３ 誘電体層 ４ 背面電極First transparent electrode 2 emission layer 2a luminous body 2b fluorescent pigment 3 dielectric layer 4 back electrode
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H05B 33/14──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) H05B 33/14
Claims (2)
含有する発光層と誘電体層とが介在してなり、上記発光
層における上記発光体の配合比を８２．０Wt％〜８５．
０Wt％とし、上記発光層中の上記発光体の平均粒径を２
１μｍ以下としたＥＬ素子において、上記発光層にイエ
ローの蛍光顔料を１．９Wt％以下の範囲で添加したこと
を特徴とするＥＬ素子。1. A light-emitting layer containing a light-emitting body and a dielectric layer are interposed between a transparent electrode and a back electrode, and the compounding ratio of the light-emitting body in the light-emitting layer is 82.0 Wt% to 85%. .
0 Wt%, and the average particle size of the luminous body in the luminous layer is 2
In EL device was 1μm or less, EL element characterized in that the fluorescent pigment Ye <br/> Russia over to the light emitting layer is added with 1.9 wt% or less.
含有する発光層と誘電体層とが介在してなり、上記発光
層における上記発光体の配合比を８２．０Wt％〜８５．
０Wt％とし、上記発光層中の上記発光体の平均粒径を２
１μｍ以下としたＥＬ素子において、上記発光層に、グ
リーン，オレンジのいずれか１の蛍光顔料を０．７Wt％
添加したことを特徴とするＥＬ素子。 2. A luminous body is provided between a transparent electrode and a back electrode.
The light emitting layer and the dielectric layer are interposed,
The mixing ratio of the luminous body in the layer is from 82.0 Wt% to 85.
0 Wt%, and the average particle size of the luminous body in the luminous layer is 2
In an EL element having a thickness of 1 μm or less,
0.7Wt% of either fluorescent pigment of lean or orange
An EL element, characterized by being added.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5070240A JP2779373B2 (en) | 1993-03-29 | 1993-03-29 | EL element |
| TW082109581A TW266380B (en) | 1993-03-29 | 1993-11-16 | |
| KR1019940004762A KR970011551B1 (en) | 1993-03-29 | 1994-03-11 | EL devices |
| US08/699,193 US5726531A (en) | 1993-03-29 | 1996-08-19 | Electroluminescent element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5070240A JP2779373B2 (en) | 1993-03-29 | 1993-03-29 | EL element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06283266A JPH06283266A (en) | 1994-10-07 |
| JP2779373B2 true JP2779373B2 (en) | 1998-07-23 |
Family
ID=13425852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5070240A Expired - Lifetime JP2779373B2 (en) | 1993-03-29 | 1993-03-29 | EL element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2779373B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7248452B2 (en) | 2002-07-12 | 2007-07-24 | Yazaki Corporation | Method of protecting semiconductor device and protection apparatus for semiconductor device using the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632306B2 (en) * | 1987-10-15 | 1994-04-27 | 日亜化学工業株式会社 | EL light emitting element |
| JPH02288188A (en) * | 1989-04-28 | 1990-11-28 | Sumitomo Chem Co Ltd | Anti-weather organic dispersion type electroluminescent body |
| JPH0758636B2 (en) * | 1990-11-22 | 1995-06-21 | 関西日本電気株式会社 | Electroluminescent lamp |
-
1993
- 1993-03-29 JP JP5070240A patent/JP2779373B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7248452B2 (en) | 2002-07-12 | 2007-07-24 | Yazaki Corporation | Method of protecting semiconductor device and protection apparatus for semiconductor device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06283266A (en) | 1994-10-07 |
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