1228325 玖、發明說明： 【發明所屬之技術領域】 本發明係關於一種有機電激發光裝置，尤指一種以兩 個電性串聯的有機電激發光元件及一電荷發生層組成，並 月匕產生具有南輝度、而舞命的白光有機電激發光裝置。 【先前技術】 有機電激發光裝置應用在平面顯示器，具有高彩声、 南解析度、低耗電量、高響應速度、自發光、廣視角等特 性，是以，目前國内與美國、日本、韓國等諸國亦投入^ 當大的資金、人才進行此一技術的研發，以為平面顯示界 的未來發展更添多樣化。 目前日本不少顯示器大廠積極投入有機電激發光裝置 的開發或應用。早期發展單色光的有機電激發光裝置，χ後 來隨著藍光有機電激發光裝置發展，以及試用漸呈穩定;灸 ，白光有機電激發光裝置亦相繼地開發出來。常見白光 機電激發光裴置，如第三圖所示，主 ,+ 王罟以早一電激發光層 C未標號）配合二陰、陽極（5 $ ) Γ R Ί、丄 其# r uv D W (51)夾層形成於 土反（5 0 )上設計，令-穩定電流透過二陰、陽極（5 二51)以共至中間電激發光層’令電激發光層發出 色光。其中該電激發光層的作法不外乎以红/綠/龄二 原色發光層（5 2 ) ( 5 3 ) ( 5 4 )所層叠而成、。一 由於各廠商的製程及材料不 ^ Λ U故而白光電激發光裝 置所壬現的白色光在色座標上 的禍Μ〜 J有所差異。在製作發光層 、匕私中，尤其需要去注意三原 7巴層沈積厚度，因為不同 1228325 出的白1光：各早色層的發光波長偏差，*而造成最後發 或:二綠、或藍等非純白色光。㈣三 (，在依序沈積的製程來看，容易 而動全身的困榉，e , —^疋乂，此一白光有機電激發光裝置的結 構，並不容易制Φ拉、6 匆I出接近純白色的光色。此外，由於此 光裝置有最大於亦# $ AA _ ^ X輝又勺限制，若欲試圖以較大電流輸入 至，光層’來提升發光亮度，則會有縮短發光層的發 光哥命的副作用產生。 士經查日本特許公開第2003_272860 ?虎「有機電激發光 衣置」專利申睛案’其揭示一種具有多發光層的有機電激 發光裝置結構，令有機電激發光裝置具有高亮度及高壽命 的特性。其主要利用多層發光層的發光亮度相加可提升的 亮度的原王里’解決前揭白光單層發光層的低亮度的缺點。 由於各發光層的發光亮度有相加的作用，相對&，各發光 層亚無需加入過大的穩定電流即可達到高亮度，因此，各 發光層的使用壽命自然較單發光層為長。 由丽揭日本公開申請案可瞭解，多層發光層的結構設 計可提供高亮度及高使用壽命的特性，至於如何產生近白 光色彩的有機電激發光裝置’則非為所問。是以，就目前 白光有機電激發光裝置要兼具有高亮度、高壽命及近純白 色光的特性，其技術仍有待克服。 【發明内容】 為此，本發明的主要目的係提供一種結構簡單易製作 且能容易產生近純白光的有機電激發光裝置，並具有高 1228325 亮度、高壽命的特性。 欲達上述目的所僅 電激發光裝置於一透明㈣手段係令該白光有機 用，再於該透明電極上=形成有—透明電極作為陽極 發光元件及一導電 ㈣们“生“的有機電激 ^ , 極（為陰極）；其中兩個有機兩、& 先几件中所夹設的電荷發生 们“激發 光元件得以電性串聯。_曰/賴以使兩個有機電激發 色發光或為雙色發光，=一1機電激發光元件係可為單 發光。 有機電激發光元件則為雙色 -丄述：光有機電激發光裝置係主要於陰、陽兩極間夾 而传盆千^ 凡件’並由電荷發生層將兩其隔開 含有紅/綠/藍三原Ι=Γ發光元件係用以產生包 ^ ’、 、的光。當陰、陽兩極通入一稃 疋電流，兩有機電激發光元 ^ 會“混合後，以產生白色先有色* 件用先兀件所產生，故其亮度具有相加 件用’ 4升整體有機電激發光裝置的輝度值。 者、’，若令其中第一有機電激發光元件發出三原色的 ’、 色光’則第二有機電激發光元件則需產生三原色另 如此組合’在製程程序上，第-有機電激發光元 二弟一有機電激發光元件均無需形成三層或以上的連續 1光層’故而在調整沈積厚度會較習知單發光層簡單。再 者’由於沈積厚度容易掌握’則可使得最後整體發出的白 光色度更接近純白色座標。 I228325 【實施方式】 本發明係為一種由兩有機電激發光元件所構成的白光 有機電激發光裝置，以產生高亮度且近純白色色座標的白 光’並且能有效地提升白光有機電激發光裝置的使用壽命 承舍明係主要於陰、陽兩極之間形成夾設有兩個不同 1有機電激發光元件，再以一電荷發生層設於兩有機電激 I光7L件之間，令兩個有機電激發光元件與陰、陽兩極電 串^ ’其中兩有機電激發光元件產生有包含紅/綠/該 一原色波長的光，當陰、陽通入一穩定電流，則含有三原 色波長的光會被產生，並加予以混合出近純白色座標的白 一其中紅/綠/藍三原色波長分別為紅色光56lnm_ 7〇〇nm，綠色光 501 —56〇nm 及藍色光 40〇nm-500nm。 ^以下謹進一步說明實施前揭結構的最佳實施例， ㈤所示，係為本發明的第一較佳白光有機電激 舍光裝置的結構實施例·· 一透明基板（1 〇 ); 透月兒極（1 1 )，係形成於該透明基板（][ 义回^為有機電激發光裝置的陽極； 之上；電洞注入及傳輸層"⑴，係設於該透明電極 入及傳:層光元件（12) ’係主要由電洞注 子傳輸層（12 单層單色發光層（12a)及電 2 2 )所組成；其中該單層單色發光層 1228325 2 2 )係用以產生三原色的其中一單色波長光，而其包含 主肢有機材料及至少一摻雜客體發光材料； 光元件 第 包何發生層（1 3 )，係形成於該第一有機電激發 2)的電子傳輸層（1 22)之上； 發生層 有機電激發光元件（1 4 )，係形成於該電荷 " 3 )上，其主要由電洞注入及傳輸層、雙色發 光电子傳輪層（142a)及電子注入層（142b )所組成；其中該雙色發光層係用產生三原色的另兩波長 光，及 -株Γ導電電極（15)’係形成於該第二有機電激發光 二光的電洞注入層（142…，作為有機電 /放毛光衣置的陰極。 上述第二有機電激發光元件（14 有以下製作方式： 义亢增你 1’採用摻雜製程，以製成單層雙色發光層。 2 .由第-發光層（i 4 a )及第二發光曰 )堆疊組成，其中第一發光層（l4a)可 — ’或為電洞傳輪暨發光層，肖電洞傳輸暨發二發！層 注入或傳輸層材料及至少-摻雜客體發光材二：：笔洞 第二發光層（1 4 b )目II勺A古=, 、、战’而該 、丄4 b )則包含有至少一主體 少一摻雜客體發光材料。 枓及至 基於上述第-較實施例的結構設計，有以 態樣可達到產生白光的目的： 貝苑 A·令第-有機電激發光元件（"）為發藍 1228325 機電激發光元件’而第二有機電激發光元# (丄4)則為 發綠光及紅光的有機電激發光元件。此一實施態樣於 100mA/cm2的電流袷度的條件下，可獲得18Cd/A的高發 光效率，量測而知的白光色座標為（〇 3〇，〇·35)。 Β ·令第，有機電激發光元件（1 2 ) S發綠光的有 機電激發光兀件，而第二有機電激發光元件（丄4 )則為 發監光及紅光的有機電激發光元件。此一實施態樣於 100mA/cm2的電流密度的條件下，可獲得23Cd/A的高發 光效率，量測而得的白光色座標為（〇.29, 〇 38)。 C ·令第一有機電激發光元件（丄2)為發紅光的有 機電激發光元件，而第二有機電激發光元件（丄4 )則為 發監光及綠光的有機電激發光元件。此一實施態樣於 100mA/cm2的電流密度的條件下，可獲得17Cd/A的高發 光效率，量測而得的白光色座標為（〇 32，〇 37 )。 請參閱第二圖所示，係為本發明白光電激發光装置結 構的第二較佳實施例，其大多結構與第一較佳實施例相同 ’惟，第-有機電激發光元件（i 2，）為一發雙色光的有 機兒/放么光元件。即，該第一有機電激發光元件（1 2，） 包含有電洞注入及傳輸層（1 1)、雙色發光層及電子傳 輸層（122)。其中該雙色發光層係可由第一發光層（ 1 2 a ’）及第二發光層（；l 2 b )堆疊而成，其中第一發 “ 。_ 2 a )可為單一發光層，或為電洞傳輸暨發光層 。該電洞傳輸暨發層係由—電洞注人或傳輸層材料及至少 夂雜客發光材料組成；而該第二發光層（1 2 b )則 1228325 包含有至少一本辦士· ^ a有機材料及至少一摻雜客體發光材料。 ' (H佳貫施例的結構設計，欲達成發白光的 的，會有以下各種實施態樣：1228325 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to an organic electro-optical light device, in particular to an organic electro-optical light element composed of two electrical series connected in series and a charge generating layer, and is produced by White light organic electro-excitation light device with south brightness and high life. [Previous technology] Organic electroluminescence devices are used in flat-panel displays with high color sound, south resolution, low power consumption, high response speed, self-luminous, and wide viewing angles. Therefore, at present domestic and the United States, Japan, South Korea Other countries have also invested ^ when large funds and talents are engaged in the research and development of this technology, in order to further diversify the future development of the flat display industry. At present, many large display manufacturers in Japan are actively investing in the development or application of organic electroluminescent devices. In the early days, organic electro-optical devices with monochromatic light were developed. Later, with the development of blue-light organic electro-optical devices, and the trial gradually became stable; moxibustion, white-light organic electro-optical devices were also successively developed. Common white light electromechanical excitation light Pei Zhi, as shown in the third picture, the main, + Wang Wang with the early one electric excitation light layer C (not labeled) with two cathodes, anode (5 $) Γ R Ί, 丄 其 # r uv DW (51) The interlayer is formed on the earth (50) and designed to allow a stable current to pass through the two cathodes and the anode (52:51) to the middle electrical excitation light layer, so that the electrical excitation light layer emits colored light. The method of the electro-excitation light layer is nothing more than a red / green / age two primary color light-emitting layer (5 2) (5 3) (5 4). 1. The color coordinates of the white light present in the white photoelectric excitation light device are different due to the manufacturing processes and materials of different manufacturers. In the production of light-emitting layers and daggers, it is particularly necessary to pay attention to the deposition thickness of the three original 7-bar layers, because the different white 1 light from 1228325: the luminous wavelength deviation of each early color layer, resulting in the final emission or: two green, or blue Such as non-pure white light. ㈣ 三 (In terms of the sequential deposition process, it is easy to move the whole body of the beech, e, — ^ 疋 乂, the structure of this white-light organic electro-excitation light device is not easy to make Φ 拉, 6 The light color is close to pure white. In addition, because this light device has a maximum limit of # $ AA _ ^ X Hui, there is a limit. If you try to input a larger current to the light layer, the light layer will increase the brightness, which will be shortened. The side effect of the light emitting layer of the light-emitting layer is generated. The Japanese Patent Publication No. 2003_272860? "The" Organic Electrically Excited Optical Device "Patent Application Case" It discloses a structure of an organic electro-luminescent device with multiple light-emitting layers. The electromechanical excitation light device has the characteristics of high brightness and long life. It mainly uses the original Wangli of multi-layer light-emitting layers to increase the brightness, which solves the shortcomings of the low brightness of the single-layer light-emitting layer that was previously exposed. The luminous brightness of the layers has an additive effect. Relative to &, each luminous layer can achieve high brightness without adding an excessively large stable current. Therefore, the lifetime of each luminous layer is naturally longer than that of a single luminous layer. The Japanese open application can understand that the structure design of the multi-layer light-emitting layer can provide high brightness and high service life characteristics. As for how to generate near white light organic electro-excitation light device, it is not a question. Therefore, the current white light has The electromechanical excitation light device must have the characteristics of high brightness, long life, and near-pure white light, and its technology still needs to be overcome. [Summary] To this end, the main purpose of the present invention is to provide a structure that is simple and easy to manufacture and can easily produce. The near-pure white light organic electroluminescence device has the characteristics of high 1228325 brightness and high life. Only the electroluminescence device to achieve the above purpose is used in a transparent method to make the white light organic, and then on the transparent electrode = Formed with a transparent electrode as an anode light-emitting element and an organic electro-stimulus ^, which is a cathode of the conductive electrode; two of which are "excitation" of the charge generated in the first two & The light elements can be electrically connected in series. _ Said / relied on to make two organic electro-excitation colors emit light or two-color light, =-1 electromechanical excitation light element system can be single light emission. The electro-mechanical excitation light element is two-colored-description: photo-organic electrical excitation light device is mainly sandwiched between the yin and yang poles and spreads thousands of pieces ^ where the pieces are separated by the charge generation layer contains red / green / blue The three original I = Γ light-emitting elements are used to generate light including ^ ',, and. When an electric current is applied to the anode and cathode, the two organic electrical excitation light elements ^ will be "mixed to produce white and colored first." It is produced by the first element, so its brightness has the luminance value of the whole organic electro-optical excitation device of 4 liters for the addition part. If "," if the first organic electro-excitation light element is made to emit the three primary colors, "color light", then the Two organic electroluminescence light elements need to produce three primary colors and another combination. In the process, the first organic electroluminescence light element and the second organic electroluminescence light element do not need to form three or more continuous optical layers, so they are adjusting. The deposition thickness will be simpler than the conventional single light emitting layer. Furthermore, 'as the thickness of the deposit is easy to grasp', the chromaticity of the white light emitted in the end as a whole is closer to the pure white coordinates. I228325 [Embodiment] The present invention is a white-light organic electro-excitation light device composed of two organic electro-excitation light elements to generate white light with high brightness and near pure white color coordinates, and can effectively promote white-light organic electro-excitation light. The service life of the device is mainly formed between the anode and the anode, and two different organic electro-optical excitation light elements are formed, and then a charge generating layer is arranged between the two organic electro-optical I light 7L pieces, so that Two organic electroluminescence light elements and a cathode and anode two-electrode string ^ 'Two of the organic electroluminescence light elements produce light including red / green / the primary color wavelength. When a stable current is passed to the yin and yang, the three primary colors are included. Wavelengths of light will be generated and mixed to produce near-pure white coordinates of white—where the red, green, and blue primary colors have wavelengths of red light 56lnm_700nm, green light 501-560nm, and blue light 40nm. -500nm. ^ The following is a further description of the best embodiment for implementing the pre-exposure structure. As shown in ㈤, this is a structural example of the first preferred white light organic electroluminescent device according to the present invention. A transparent substrate (10); transparent The moon electrode (1 1) is formed on the transparent substrate (] [义 回 ^ is the anode of the organic electro-optical excitation light device; the hole injection and transmission layer " ⑴ is provided on the transparent electrode and Transmission: The layer light element (12) is mainly composed of hole injection transport layer (12 single-layer monochromatic light-emitting layer (12a) and electric 2 2); wherein the single-layer monochromatic light-emitting layer 1228325 2 2) It is used to generate one of the three primary colors of monochromatic wavelength light, and it includes the main limb organic material and at least one doped guest light-emitting material; the light-generating layer (1 3) is formed on the first organic electrical excitation 2 ) On the electron transport layer (1 22); the generation layer organic electro-excitation light element (1 4) is formed on the charge " 3), which is mainly injected and transported by holes, and the two-color light-emitting electron transfer wheel Layer (142a) and electron injection layer (142b); wherein the two-color light-emitting layer is produced by The other two wavelengths of light of the three primary colors, and the-Γ conductive electrode (15) 'are formed in the hole injection layer (142 ...) of the second organic electro-excitation light, and serve as the cathode of the organic electric / hair-releasing clothing. The second organic electro-excitation light element (14 has the following manufacturing methods: Yi Kang Zeng You 1 'uses a doping process to make a single-layer two-color light-emitting layer. 2. The first-light-emitting layer (i 4 a) and the second light-emitting layer Said) stacking composition, where the first light-emitting layer (l4a) may-'or a hole transmission wheel and light-emitting layer, Xiao hole transmission and hair-emitting second! Layer injection or transmission layer material and at least-doped guest light-emitting material two ::: The second light-emitting layer of the pen hole (1 4 b), II, A, 而, 、, 战, and 丄 4 b) contain at least one host and one doped guest light-emitting material. As for the structure design based on the above-mentioned comparative embodiment, there is a state in which the purpose of generating white light can be achieved: Beiyuan A · Lingdi-Organic Electrical Excitation Light Element (") is a blue 1228325 electromechanical excitation light element 'and The second organic electro-excitation light element # (为 4) is an organic electro-excitation light element that emits green and red light. In this embodiment, under the condition of a current of 100 mA / cm2, a high light emitting efficiency of 18 Cd / A can be obtained, and the white light color coordinate known from the measurement is (0.30, 0.35). Β. The first organic electroluminescent element (1 2) S emits a green organic electroluminescent element, and the second organic electroluminescent element (丄 4) is an organic electroluminescent element that emits monitor light and red light. Light element. In this embodiment, under the condition of a current density of 100 mA / cm2, a high light-emitting efficiency of 23 Cd / A can be obtained, and the white light color coordinate measured is (0.29, 0.38). C. Let the first organic electroluminescent element (丄 2) be an organic electroluminescent element that emits red light, and the second organic electroluminescent element (丄 4) be an organic electroluminescent element that emits monitor light and green light. element. In this embodiment, under the condition of a current density of 100 mA / cm2, a high light emitting efficiency of 17 Cd / A can be obtained, and the white light color coordinate measured is (0 32, 〇 37). Please refer to the second figure, which is the second preferred embodiment of the structure of the white photoelectric excitation light device according to the present invention. Most of the structures are the same as those of the first preferred embodiment. However, the first organic electroluminescence device (i 2 ,) Is a two-color organic organic light emitting element. That is, the first organic electro-optical excitation light element (12, 2) includes a hole injection and transmission layer (1 1), a two-color light emitting layer, and an electron transmission layer (122). The two-color light-emitting layer may be formed by stacking a first light-emitting layer (1 2 a ′) and a second light-emitting layer (; 1 2 b). The first emission “._ 2 a) may be a single light-emitting layer, or Hole transmission and light emitting layer. The hole transmission and light emitting layer is composed of-hole injection or transmission layer material and at least doped guest light emitting material; and the second light emitting layer (1 2 b) 1228325 contains An official ^ a organic material and at least one doped guest light-emitting material. (The structure design of the Jiaguan embodiment, if you want to achieve white light, there will be the following various implementation aspects:
A .令弟一有機電激發光元件（1 2 ’）為一發藍光及 、’“:,的有機電激發光元件’巾第二有機電激發光元件（1 ^則為一發黃光及紅光的有機電激發光元件。此-實施 悲樣於1〇〇mA/Cm2的電流密度的條件下，可獲得20Cd/A 、门I光放率，里测而得的白光色座標為（〇 34，〇別） 0A. Let the first organic electro-optical light emitting element (1 2 ') be a blue light and "":, the organic electro-active light emitting element "and the second organic electro-light-emitting light element (1 ^ is a yellow light and Red light organic electro-excitation light element. This-implementation is performed under the condition of a current density of 100 mA / Cm2, and can obtain 20 Cd / A and gate I light emission rate, and the white light color coordinates measured in ( 〇34 ， 〇 Don't) 0
B ·令第-有機電激發光元件（丄2，）為一發藍光及 黃光的有機電激發光元件，@第二有機電激發光元件（丄 4 )則為發綠光及紅光的有機電激發光元件。此一實施態 樣方、1 00mA/cm2的電流密度的條件下，可獲得彳9Cd/A的 问毛光效率，置測而得的白光色座標為（〇 . 32，〇 · 39 )。B · Let the first organic electro-optical light emitting element (丄 2,) be a blue and yellow organic electro-active light emitting element, and the @ second organic electro-active light-emitting element (丄 4) be green and red light emitting Organic electrical excitation light element. In this embodiment, under the condition of a current density of 100 mA / cm2, the gross light efficiency of 彳 9Cd / A can be obtained, and the white light color coordinate obtained from the measurement is (0.32, 0.39).
C ·令第一有機電激發光元件（i 2，）為一發藍光及 紅光的有機電激發光元件，而第二有機電激發光元件（工 4 )則為發綠光及紅光的有機電激發光元件。此一實施態 樣於100mA/cm2的電流密度的條件下，可獲得21Cd/A的 高發光效率，量測而得的白光色座標為（〇·33, 〇·39)。 由上述幾個實施態樣可知，第一及第二有機電激發光 元件（1 2 ’） （ 1 4 )雖然分別產生雙色光，但雙色光中 係同樣包含有三原色波長的光，故而當陰、陽兩極通入一 穩定電流，則同樣產生近純白色座標的白光。 經前述各實施例說明可知，本發明的白光有機電激發 10 !228325 光裝置主要於陰、陽兩極間炎設有兩有機電激發光 並由層电何發生層將兩發光單元予以隔開並使電性 串聯’其中兩有機電激發光元件係用以產生包含有三：： 波長的有色光’當兩陰、陽極通入一穩定電流後，兩有機 電’放光凡件發出含有三原色波長光，並於混合後產生一 ::先# :於二原色波長光係分別由兩個分離的有機電激 "^ 生，故各自產生光的亮度具有相加的效果， 能有效提升整體白光發光亮度。反之，若發光亮度：需： 南：則：降低t有色發光單元的穩定满，而使得各有 色發，早7C的壽命延長。是以，本發明確實可提供一種具 儿度回可命及近純白色座標的白光有機電激發光裝 ^，且相較傳統的單層白光有機電激發光裝置製作上更為 合易’有助於量產的_種白光有機電激發光裝置。 〜卢為此，本發明確實有利於白光有機電激發光裝置的技 、員域的發展’具有產業上的利用性，並且符合發明專利 。補H及進步性要件，爰依法具文提出申請。 【圖式簡單說明】 (—)圖式部分 第—圖··係本發明第一較佳實施例的結構示意圖。 第一圖·係本發明第二較佳實施例的結構示意圖。 第一圖·係為一習用單層白光有機電激發光裝置的結 構示意圖。 (二）元件代表符號 (1 〇)透明基板 1228325 (1 l)透明電極 (12) (12’）第一有機電激發光元件 (1 2 a )單色發光層 (12a〇單色第一發光層 (1 2 b )第二發光層 (1 2 1 )電洞注入及傳輸層 (1 2 2 )電子傳輸層 (1 3 )電荷發生層 (1 4 )第二有機電激發光元件 (1 4 a )第一發光層 (14b)第二發光層 (1 4 1 )電洞注入及傳輸層 (1 4 2 a )電子傳輸層 (142b)電子注入層 (1 5 )導電電極 (5 0 )基板 (51) 陽極 (52) (53) (54)發光層 (5 5 )陰極 12C. Let the first organic electroluminescent element (i2,) be a blue and red organic electroluminescent element, and the second organic electroluminescent element (process 4) be a green and red optical element. Organic electrical excitation light element. In this embodiment, under the condition of a current density of 100 mA / cm2, a high luminous efficiency of 21 Cd / A can be obtained, and the measured white light color coordinates are (0.333, 0.39). It can be known from the foregoing embodiments that although the first and second organic electro-optical light emitting elements (12 ') (14) respectively generate two-color light, the two-color light also includes light of three primary color wavelengths. If a stable current is applied to the anode and the anode, white light with nearly pure white coordinates is also generated. According to the description of the foregoing embodiments, it can be known that the white-light organic electro-excitation 10-228325 light device of the present invention is mainly provided with two organic electro-excitation lights at the yin and yang poles, and the two light-emitting units are separated by a layer of electricity and a layer of electricity. The electrical series of 'two of the organic electro-optic light-emitting elements are used to generate three colors :: wavelength of colored light' When two cathodes and anodes pass a stable current, the two organic electricity 'light emitting components emit light containing three primary colors of wavelengths , And after mixing it produces one :: first #: the two primary wavelengths of light are generated by two separate organic stimuli, respectively, so the brightness of each light produced has an additive effect, which can effectively improve the overall white light emission brightness. Conversely, if the luminous brightness: needs: South: then: reduce the stable full of the colored luminous unit of t, so that each colored hair, the life of 7C is prolonged. Therefore, the present invention can indeed provide a white light organic electro-excitation light device with a high degree of reversion and near pure white coordinates ^, and it is easier to manufacture than a traditional single-layer white light organic electro-excitation light device. _ A kind of white light organic electro-excitation light device which is helpful for mass production. ~ To this end, the present invention is indeed conducive to the development of the technology and staffing field of white light organic electro-excitation light devices. It has industrial applicability and conforms to the invention patent. Make up for H and progressive elements, apply according to the law and documents. [Brief description of the drawings] (-) Schematic diagram The first diagram-is a schematic structural diagram of the first preferred embodiment of the present invention. The first figure is a schematic structural view of a second preferred embodiment of the present invention. The first figure is a schematic diagram of the structure of a conventional single-layer white light organic electroluminescent device. (2) Element representative symbol (10) Transparent substrate 1228325 (1 l) Transparent electrode (12) (12 ') First organic electro-excitation light element (1 2 a) Monochromatic light emitting layer (12a〇 Monochromatic first light emission Layer (1 2 b) second light emitting layer (1 2 1) hole injection and transport layer (1 2 2) electron transport layer (1 3) charge generation layer (1 4) second organic electro-excitation light element (1 4 a) The first light emitting layer (14b), the second light emitting layer (1 4 1), the hole injection and transmission layer (1 4 2 a), the electron transmission layer (142b), the electron injection layer (1 5), the conductive electrode (50), and the substrate (51) Anode (52) (53) (54) Light-emitting layer (5 5) Cathode 12