JPH03187192A - Light emitting element - Google Patents
Light emitting elementInfo
- Publication number
- JPH03187192A JPH03187192A JP1327615A JP32761589A JPH03187192A JP H03187192 A JPH03187192 A JP H03187192A JP 1327615 A JP1327615 A JP 1327615A JP 32761589 A JP32761589 A JP 32761589A JP H03187192 A JPH03187192 A JP H03187192A
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- light
- red
- blue
- green
- 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
- 238000005401 electroluminescence Methods 0.000 claims description 4
- 150000002484 inorganic compounds Chemical class 0.000 claims description 3
- 229910010272 inorganic material Inorganic materials 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 abstract description 5
- VPUGDVKSAQVFFS-UHFFFAOYSA-N coronene Chemical compound C1=C(C2=C34)C=CC3=CC=C(C=C3)C4=C4C3=CC=C(C=C3)C4=C2C3=C1 VPUGDVKSAQVFFS-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 5
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 abstract description 2
- 150000004866 oxadiazoles Chemical class 0.000 abstract description 2
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 abstract description 2
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 abstract description 2
- 238000002513 implantation Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- JCXLYAWYOTYWKM-UHFFFAOYSA-N (2,3,4-triphenylcyclopenta-1,3-dien-1-yl)benzene Chemical compound C1C(C=2C=CC=CC=2)=C(C=2C=CC=CC=2)C(C=2C=CC=CC=2)=C1C1=CC=CC=C1 JCXLYAWYOTYWKM-UHFFFAOYSA-N 0.000 description 1
- GOLORTLGFDVFDW-UHFFFAOYSA-N 3-(1h-benzimidazol-2-yl)-7-(diethylamino)chromen-2-one Chemical compound C1=CC=C2NC(C3=CC4=CC=C(C=C4OC3=O)N(CC)CC)=NC2=C1 GOLORTLGFDVFDW-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 125000005577 anthracene group Chemical group 0.000 description 1
- 229910052614 beryl Inorganic materials 0.000 description 1
- 125000005583 coronene group Chemical group 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- DCZNSJVFOQPSRV-UHFFFAOYSA-N n,n-diphenyl-4-[4-(n-phenylanilino)phenyl]aniline Chemical class C1=CC=CC=C1N(C=1C=CC(=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 DCZNSJVFOQPSRV-UHFFFAOYSA-N 0.000 description 1
- 150000002916 oxazoles Chemical class 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は液晶等を用いた受光型表示装置のバックライト
に用いる発光素子の構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to the structure of a light emitting element used in a backlight of a light-receiving display device using a liquid crystal or the like.
［従来の技術］
従来、液晶などを用いた受光型の表示素子を発光型とし
て用いるためには白色のバックライトを用い、更にカラ
ー化するためにはカラーフィルターを組み合わせなけれ
ばならなかった。[Prior Art] Conventionally, in order to use a light-receiving type display element using a liquid crystal or the like as a light-emitting type, a white backlight was used, and in order to make it colored, it was necessary to combine it with a color filter.
［発明が解決しようとする課題］
しかしカラーフィルターを作製するためには非常にコス
トがかかり、またカラーフィルターを用いることは光の
かなりの部分を捨てることになる。[Problems to be Solved by the Invention] However, producing color filters is extremely expensive, and using color filters results in wasting a considerable portion of light.
そこで本発明は、このような課題を解決するものであり
、カラーフィルターを必要とせず、光の利用率の非常に
高い、バックライトに用いることのできる発光素子を提
供するものである。The present invention is intended to solve these problems, and provides a light-emitting element that does not require a color filter, has a very high light utilization rate, and can be used for a backlight.
［課題を解決するための手段］
本発明の発光素子は、有機化合物或は無機化合物のエレ
クトロルミネッセンスを用いた発光素子において、赤青
緑の各発光部をモザイク状に配列したことを特徴とする
。[Means for Solving the Problems] The light-emitting element of the present invention is a light-emitting element using electroluminescence of an organic compound or an inorganic compound, and is characterized in that red, blue, and green light-emitting parts are arranged in a mosaic shape. .
［作用］
本発明の上記の構成によれば、受光型表示装置の赤青緑
の各画素に対応して、本発明発光素子上の発光点が赤青
緑に発光するためにカラーフィルターが必要なく光の利
用効率が高い。また装置全体の構成が簡単になる。[Function] According to the above configuration of the present invention, color filters are required in order for the light-emitting points on the light-emitting element of the present invention to emit red, blue, and green light corresponding to each red, blue, and green pixel of the light-receiving display device. Light usage efficiency is high. Furthermore, the configuration of the entire device becomes simpler.
以下、実施例により本発明の詳細を示す。Hereinafter, the details of the present invention will be shown by examples.
［実施例１］
第１図は本発明の実施例における基本構成を示す発光素
子の断面図である。ここでは、発光層として有機化合物
、具体的には赤い発光物質としてべｉルン、青い発光物
質としてアントラセン、緑の発光物質としてコロネンを
用いた例を示す。[Example 1] FIG. 1 is a sectional view of a light emitting element showing the basic configuration in an example of the present invention. Here, an example will be shown in which an organic compound is used as the light-emitting layer, specifically, a red light-emitting substance is Beryl, a blue light-emitting substance is anthracene, and a green light-emitting substance is coronene.
基板１に正極２を形成した後、正孔注入層３としてオキ
サジアゾール誘導体を蒸着した（膜厚を５００人とした
）。次に画素に対応して赤い発光Ｍ４としてペリレン、
青い発光層５としてアントラセン、緑の発光Ｍ６として
コロネンをマスクにより蒸着し分けた（膜厚をＩＱＯＯ
人とした。）。After forming the positive electrode 2 on the substrate 1, an oxadiazole derivative was deposited as the hole injection layer 3 (the film thickness was 500 layers). Next, perylene is used as the red light emitting M4 corresponding to the pixel.
Anthracene was used as the blue light-emitting layer 5, and coronene was deposited as the green light-emitting layer 5 using a mask.
As a person. ).
この上に陰極７としてマグネシウム銀を蒸着した。Magnesium silver was deposited on this as a cathode 7.
こうして得られた発光素子に直流電圧２０Ｖを印加する
とモザイク状に赤青緑の発光が観測された。これに液晶
表示パネルを組み合わせるとカラー発光表示装置となっ
た。When a DC voltage of 20 V was applied to the light emitting device thus obtained, red, blue and green light emission was observed in a mosaic pattern. When this was combined with a liquid crystal display panel, it became a color light emitting display.
発光物質としてはここに示したもののほか、ピレン、ク
マリン、テトラフェニルシクロペンタジェン等の芳香族
多環系のものであればよい。In addition to those shown here, the luminescent substance may be an aromatic polycyclic substance such as pyrene, coumarin, or tetraphenylcyclopentadiene.
また正孔注入物質もここに示した物の他、トリフェニル
ジアミン系化合物、オキサゾール系化合物、フタロシア
ニン系化合物等を用いることができる。In addition to the hole-injecting substances shown here, triphenyldiamine compounds, oxazole compounds, phthalocyanine compounds, and the like can be used.
電子注入層はここでは設けなかったが、設けてもよい。Although the electron injection layer was not provided here, it may be provided.
電極も、ここに示したものに限らない。The electrodes are also not limited to those shown here.
［実施例２］
第２図は本発明の実施例における基本構成を示す発光素
子の断面図である。ここでは、発光物質として無機化合
物を用いた発光層、具体的には赤い発光層２４としてＣ
ａＳ （Ｅｕ）、青い発光層２５として５ｒＳ（Ｃｅ、
Ｋ）、緑の発光層２６としてＺｎＳ （ＴｂＦ）を用い
た例を示す。[Example 2] FIG. 2 is a sectional view of a light emitting element showing the basic configuration in an example of the present invention. Here, a light emitting layer using an inorganic compound as a light emitting substance, specifically a red light emitting layer 24, is made of
aS (Eu), 5rS (Ce,
K) shows an example in which ZnS (TbF) is used as the green light emitting layer 26.
基板２１上に透明電極２２を形成した後誘電体層２３と
してＹ２Ｏ３１！をＥＢ蒸着法にて形成した。After forming the transparent electrode 22 on the substrate 21, the dielectric layer 23 is Y2O31! was formed by an EB evaporation method.
次に各色発光層２４．２５．２６もＥＢ蒸着法にて実施
例１と同様にマスクを用いて蒸着した。Next, the light-emitting layers 24, 25, and 26 of each color were also deposited by EB deposition using a mask in the same manner as in Example 1.
膜厚は３０００人とした。この上に誘電体層２７として
Ｙ２Ｏ３膜を蒸着し、更に電極２８としてアルミニウム
を蒸着した。The film thickness was set at 3,000 people. A Y2O3 film was deposited thereon as a dielectric layer 27, and aluminum was further deposited as an electrode 28.
こうして作製した発光素子に交流電圧１００ｖ５ＫＨｚ
を印加したところ赤青緑の発光が観測された。An AC voltage of 100v5KHz was applied to the light emitting device thus produced.
When applied, red, blue, and green light emission was observed.
発光物質、誘電体層、電極の材質はここに示した物に限
らない。The materials of the luminescent substance, dielectric layer, and electrode are not limited to those shown here.
［発明の効果］
以上述べたように本発明によれば、従来バックライトと
カラーフィルターで構成されたカラー発光部が、本発明
の発光素子（カラーバックライト）だけですみ、光の利
用効率も高く低消費電力となる。受光型の表示素子のバ
ック、ライトとして用いるほか、白色光源としても本発
明の発光素子を用いることができる。[Effects of the Invention] As described above, according to the present invention, the color light-emitting section, which conventionally consisted of a backlight and a color filter, can be replaced with only the light-emitting element (color backlight) of the present invention, and the efficiency of light utilization is improved. High power consumption and low power consumption. In addition to being used as a back and light of a light-receiving type display element, the light emitting element of the present invention can also be used as a white light source.
第１図は、本発明の実施例１の基本構成を表す発光素子
の断面図である。
第２図は、本発明の実施例２の基本構成を表す発光素子
の断面図である。
１・・・基板
２・・・正極
３・・・正孔注入層
４・・・赤色発光層
５・・・青色発光層
６・・・緑色発光層
７・・・陰極
１・・・基板
２・・・電極
３・・・誘電体層
４・・・赤色発光層
５・・・青色発光層
６・・・緑色発光層
７・・・誘電体層
８・・・１ｊｌ極FIG. 1 is a sectional view of a light emitting element showing the basic configuration of Example 1 of the present invention. FIG. 2 is a sectional view of a light emitting element showing the basic configuration of Example 2 of the present invention. 1... Substrate 2... Positive electrode 3... Hole injection layer 4... Red light emitting layer 5... Blue light emitting layer 6... Green light emitting layer 7... Cathode 1... Substrate 2 ...Electrode 3...Dielectric layer 4...Red light emitting layer 5...Blue light emitting layer 6...Green light emitting layer 7...Dielectric layer 8...1jl pole
Claims (3)
いて、赤青緑の各発光部を画素に対応させて配列したこ
とを特徴とする発光素子。(1) A light emitting element using electroluminescence, characterized in that red, blue, and green light emitting parts are arranged in correspondence with pixels.
発せられる請求項１記載の発光素子。(2) The light emitting device according to claim 1, wherein the electroluminescence is emitted from an organic compound.
発せられる請求項１記載の発光素子。(3) The light emitting device according to claim 1, wherein the electroluminescence is emitted from an inorganic compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1327615A JPH03187192A (en) | 1989-12-18 | 1989-12-18 | Light emitting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1327615A JPH03187192A (en) | 1989-12-18 | 1989-12-18 | Light emitting element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03187192A true JPH03187192A (en) | 1991-08-15 |
Family
ID=18201034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1327615A Pending JPH03187192A (en) | 1989-12-18 | 1989-12-18 | Light emitting element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03187192A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11185957A (en) * | 1997-12-17 | 1999-07-09 | Sanyo Electric Co Ltd | Organic electroluminescent (el) element and organic el device |
| EP1045462A2 (en) * | 1999-04-13 | 2000-10-18 | Mannesmann VDO Aktiengesellschaft | Organic light emitting diode for producing mixed colour light |
| US6264805B1 (en) | 1994-12-13 | 2001-07-24 | The Trustees Of Princeton University | Method of fabricating transparent contacts for organic devices |
| US6358631B1 (en) | 1994-12-13 | 2002-03-19 | The Trustees Of Princeton University | Mixed vapor deposited films for electroluminescent devices |
| US6366016B1 (en) | 1998-01-22 | 2002-04-02 | Nec Corporation | Multicolor organic electroluminescent panel and process for production thereof |
| US6365270B2 (en) | 1994-12-13 | 2002-04-02 | The Trustees Of Princeton University | Organic light emitting devices |
| US6437769B1 (en) | 1998-07-24 | 2002-08-20 | Seiko Epson Corporation | Display apparatus |
| US6548956B2 (en) | 1994-12-13 | 2003-04-15 | The Trustees Of Princeton University | Transparent contacts for organic devices |
| US6628067B2 (en) | 2000-02-25 | 2003-09-30 | Seiko Epson Corporation | Organic electroluminescent white light source and method for manufacturing the same |
| US6741228B1 (en) | 1998-07-24 | 2004-05-25 | Seiko Epson Corporation | Display apparatus |
-
1989
- 1989-12-18 JP JP1327615A patent/JPH03187192A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7714504B2 (en) | 1994-12-13 | 2010-05-11 | The Trustees Of Princeton University | Multicolor organic electroluminescent device formed of vertically stacked light emitting devices |
| US6264805B1 (en) | 1994-12-13 | 2001-07-24 | The Trustees Of Princeton University | Method of fabricating transparent contacts for organic devices |
| US6358631B1 (en) | 1994-12-13 | 2002-03-19 | The Trustees Of Princeton University | Mixed vapor deposited films for electroluminescent devices |
| US6365270B2 (en) | 1994-12-13 | 2002-04-02 | The Trustees Of Princeton University | Organic light emitting devices |
| US6548956B2 (en) | 1994-12-13 | 2003-04-15 | The Trustees Of Princeton University | Transparent contacts for organic devices |
| US6596134B2 (en) * | 1994-12-13 | 2003-07-22 | The Trustees Of Princeton University | Method of fabricating transparent contacts for organic devices |
| US7173369B2 (en) | 1994-12-13 | 2007-02-06 | The Trustees Of Princeton University | Transparent contacts for organic devices |
| JPH11185957A (en) * | 1997-12-17 | 1999-07-09 | Sanyo Electric Co Ltd | Organic electroluminescent (el) element and organic el device |
| US6656519B2 (en) | 1998-01-22 | 2003-12-02 | Nec Corporation | Multicolor organic electroluminescent panel and process for production thereof |
| US6366016B1 (en) | 1998-01-22 | 2002-04-02 | Nec Corporation | Multicolor organic electroluminescent panel and process for production thereof |
| US6437769B1 (en) | 1998-07-24 | 2002-08-20 | Seiko Epson Corporation | Display apparatus |
| US6741228B1 (en) | 1998-07-24 | 2004-05-25 | Seiko Epson Corporation | Display apparatus |
| EP1045462A3 (en) * | 1999-04-13 | 2004-12-22 | Siemens Aktiengesellschaft | Organic light emitting diode for producing mixed colour light |
| EP1045462A2 (en) * | 1999-04-13 | 2000-10-18 | Mannesmann VDO Aktiengesellschaft | Organic light emitting diode for producing mixed colour light |
| US6628067B2 (en) | 2000-02-25 | 2003-09-30 | Seiko Epson Corporation | Organic electroluminescent white light source and method for manufacturing the same |
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