1252058 15563twf.doc/g 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種發光元件，且特別是有關於一種 有機電致發光元件。 【先前技術】 有機電致發光元件（organic electroluminescent device，〇ELD )係一種利用有機官能性材料（organic . functional material )的自發光特性來達到顯示效果的元 件，其中依照有機官能性材料的分子量分為小分子有機電 致發光元件（Small Molecule 0ELD，SM-0ELD)與高分子 電激發光元件（Polymer Electro-Luminescent Device， PELD)兩大類。兩者之發光結構皆是由一對電極以及有機 官能層所構成，而有關於習知有機電致發光元件的結構 詳述如後。 圖1繪示習知有機電致發光元件的結構示意圖。請參 考圖1，習知有機電致發光元件100包括一基板11〇、—陽 > 極層120、一有機官能層130以及一陰極層14〇，其中陽極 層120配置於基板110上，而此陽極層12〇之材質為銦錫 氧化物（indium tin oxide，IT0)。有機官能層13〇配置於 陽極層120上，且此有機官能層13〇通常為數層有機薄膜 所構成。此外，陰極層14〇係配置於有機官能層13〇上， 而陰極層140之材質通常是金屬。 當施加直流電壓時，電洞從陽極層120注入有機官能 層130’而電子從陰極層14〇注入有機官能層因為外 !252〇58 15563twf.doc/g 力…=成的電位差，使得電洞與電子兩種載子 官能層13()中移動並產生料性結合 (mdmuve recombinati〇n )。部分由電子電洞再往 t能量Ϊ將有機發光材料分子激發形成單-激態分子。 當早一激態分子釋放能量回到基態時，其中— 量會以光子的方式放“發光，此即為習 發^ 元件100的發光原理。 钱电致毛先129. The invention relates to a light-emitting element, and more particularly to an organic electroluminescence element. [Prior Art] An organic electroluminescent device (〇ELD) is an element that utilizes the self-luminous properties of an organic functional material to achieve a display effect, wherein the molecular weight of the organic functional material is determined. It is a small molecule organic electroluminescent device (Small Molecule 0ELD, SM-0ELD) and a polymer electro-luminescence device (PELD). Both of the light-emitting structures are composed of a pair of electrodes and an organic functional layer, and the structure of a conventional organic electroluminescent device is described in detail below. FIG. 1 is a schematic view showing the structure of a conventional organic electroluminescent device. Referring to FIG. 1 , a conventional organic electroluminescent device 100 includes a substrate 11 , a positive electrode layer 120 , an organic functional layer 130 , and a cathode layer 14 , wherein the anode layer 120 is disposed on the substrate 110 . The material of the anode layer 12 is indium tin oxide (IT0). The organic functional layer 13 is disposed on the anode layer 120, and the organic functional layer 13 is usually composed of a plurality of organic thin films. Further, the cathode layer 14 is disposed on the organic functional layer 13A, and the material of the cathode layer 140 is usually a metal. When a DC voltage is applied, a hole is injected from the anode layer 120 into the organic functional layer 130' and electrons are injected from the cathode layer 14 into the organic functional layer because of the external potential of 252 〇 58 15563 twf.doc / g force ... = the potential difference, so that the hole Moves with the electron two-carrier functional layer 13() and produces a material bond (mdmuve recombinati〇n). The organic light-emitting material molecules are excited by the electron holes to the t-energy to form a single-excited molecule. When the early excitatory molecule releases energy back to the ground state, the amount will be "lighted" in the form of photons, which is the principle of light emission of the component 100.
然而’習知有機電致發光元件100所存在 有機官能層13G所發出的光容易因為元件内之各層 率的不同而產生反射或是折射。因此，有機官能^ 13〇所 發出的光大部分都被限制於元件内部而無法穿透 110 ’因而使得有機錢發光元件⑽的發歧率偏低·^為 y解決發光效賴低的_，itf會在f知有機電致發光 元件100上施加較高的驅動電壓，然而驅動電壓越高，習 知有機電致發光元件100的壽命也就越短。 ^ 【發明内容】 、…有鑒於此，本發明的目的就是在提供一種有機電致發 光元件’其具有較佳的發光效率。 此外，本發明的再一目的就是提供一種有機電致發光 元件’其具有較低的驅動電壓。 基於上述目的或其他目的，本發明提出一種有機電致 發光元件，其包括一基板、多個有機電致發光單元與至少 氧化鶴層（tungsten oxide layer, WO3 layer)，其中這此 有機電致發光單元堆疊於基板上，而每一氧化嫣層係^於 6 1252058 15563twf.doc/g 相鄰的二有機電致發光單元之間。 元包Γ、=ίΓ佳實補，上述之各麵機電致發光單 間之―』:層':陰極層與配置於陽極層以及陰極層之 層係配置於基板上。有中陽極 =電::光單元之有機官能層上的 層之材;例士上广極層為一透明導體層’而此透明導體 链片、如疋銦錫虱化物（lndiumtin〇xide，IT〇)、姻 、，辛虱化物（indium zinc oxide，IZ〇 ) 铷 (—ninUmzinc〇xide AZ〇)。 ”鋁鋅虱化物 機電Γΐίί明較佳實施例，上述之最遠離基板表面之有 包括—陰極層與—有機官能層。有機官能 於陰極層之底下，而位於此電致發光單元之有機 材：；氏下之乳化鎢層係作為-陽極層。此外，陰極層之 ^可以是1呂，、鎂、銦、錫、般、銀、金或含鎂之ί 機雷2本發明較佳實施例，上述之最靠近基板表面之有 声传包括—陽極層與—有機官能層’其中陽極 二係配置於基板上。有機官能層魏置於陽極層上 ;此有機電致發光單元之有機官能層上晚⑽層係作為 7 !252058 15563twf.doc/g 一陰極層。此外曰 括-陰極層與一有::：板:=有機電致發光單元包 氧化鶴層係作元之有機官能層底下: 板、料麵’上述絲_如是破璃美 基於㈤bie，^ 致發光元件，其包=、的一= 上，而這些有機官能層係堆爲於陽^極層t配置於基板 係夾於相鄰的二右始1 ’極層上。每—氧化鎢層 離之基板表面之有機;:::間，而陰極層係配置於最遠 於施例，上述之氧化鎢層的厚度係介 屛發明較佳實施例，上述之陽極層為一透明導體 鋁 依…、本务明較佳實施例，上述之陰極層的材質可以是 _、錤 '銦、錫H、金或含鎂之合金。 板 依知本發明較佳實施例，上述之基板例如是玻璃基 塑膠基板或可撓曲基板。 表一土於上述本發明採用氧化鶴層連接兩相鄰有機電致 發光單元或是兩相鄰有機官能層，以作為電荷產生層 (charge generation layer)，因此相較於習知技術，本發明之 8 l252〇58 15563twf.doc/g 有機電致發光元件具有較高的發光效率。 “為讓本發明之上述和其他目的、特徵和優點能更明顯 易丨董，下文特舉較佳實施例，並配合所附圖式，作士、，細七、 明如下。 < 巧口 【貫施方式】 【第一實施例】 圖2繪不依照本發明第一較佳實施例之有機 = =圖αΓ參考圖2’本實施例之有機_ 九兀件200包括-基板21〇、多個有機電致發光單 220b與至少-氧化鎢層23〇，其中這些有 島與2勘係堆疊於基板21〇上，而氧化嫣層 置於這些有機電致發光單元22Qa與通之間。4 =10例如是玻璃基板、石英基板、塑膠基板或可挽曲ς 更詳細而言，有機電致發光單元220a 3、—一陰極層^與配置於陽極層2孤以及陰極 勺二之有機吕此層224a。此外，有機官能層224a除了 匕括了主要的有機發光層之外，-一 ’、 而另外包括電洞、、主入爲+、 （ 凡件貫際所需 θ # 1 a、電洞傳輸層、電子傳輸層與電子 ^層或疋其組合層。另外，陽極層222a可以是一透日^ 其他：為 9 1252058 1 5563twf.doc/g 濺鍍製程。 同樣地’有機電致發来星云 之-有機官^ ^ 以及陰極層属之間 mi H 料，核官㈣224b與有機官 月匕層224a的Μ冓相似，同樣的 了主要的有機發光層之外，更可依據各元件== 層或是其組合層。另;^層2施電子f輪層與電子注入 鎂、銦、錫、猛、銀、金或含鎂之合金，並中含錯之八入 nvrp.s ^人人、Λ) 口巫、鎂銦（Mg:In)合金、鎂錫 金。· n a至、鎂銻（Mg:Sb)合金或鎂碲（Mg:Te)合 30 ^ =參考圖2二氧化鶴層230的厚度係介於〇.5至 成。另外，氧化鷄層230可以採用蒸鍍的方式形 產生声（h ectingiaye〇，更作為一電荷 座玍層（charge generation layer，cgl )。換古 乳化鎢層都可以連接兩相㈣有機電致發光單元 化鎢層可以提供電子或電洞的注入與遷移。 乳 200日，#t㈣加於此有機紐發光元件 電何產生層23〇將可提供電子電洞至上層及下声 光單元2施、2施内，使電子和電洞在上ί 光機電致發光單元通、2施内再結合進而放出 尤以耠鬲凡件發光效率。 1252058 1 5563twf.doc/g 表1 氧化鎢 厚度 產率 功率 效率 電壓 外部量子 效率 ' ^ CIEx CIEy 實例1 0 13.4 1.3 32 3.4 0.25 0.69 實例2 1 49.2 5.5 28 12.6 0.27 0.68 實例3 2 45.6 6.8 21 11.6 —~~~— 0.28 0.67 實例4 4 34.9 5.5 20 8.8 0.33 0.64 實例5 12 30.9 5.0 19 7.8 —-— 0.34 0.63 實例6 21 25.6 4.1 20 6.7 0.35 0.62 實例7 30 21.1 3.4 _20 5.6 —-----〜 0.37 ----- 0.61 表1列出各種不同厚度之氧化鎢層的實驗數據。請參 考表1 ’各貫例之電流密度為20mA/cm2，而有機電致發光 單元的面積為3x3mm2。此外，實例1只有單一有機電致 發光單元（類似圖1所繪示），而實例2至7是有兩個有 機電致發光單元堆疊（類似圖2所繪示），其中這些實例 1至7都是發綠光。另外，氧化鎢層厚度的單位為nm。產 率（yield)的單位為Cd/A，而功率效率（powerefficiency) 的單位為lm/W。電壓的單位為伏特，而外部量子效 率（external quantum efficiency，EQE)的單位為百分比 (%)。 當氧化鎢層厚度下降時，發光效率〇uminance efficiency)也隨之增加。實例7的發光效率約為實例！的 發光效率的兩倍。實例2的發光效率約為實例丨的發光效 率的四倍。更詳細而言，實例2的發光效率為49.2cd/A， 11 1252058 15563twf.doc/g 而！放率為 12.6%，且 cie 座標為（x=〇.27，y=〇.68) ==的 CIE 座標為（X=Q.272,y=().672)。換言之， :較=技術’本實施例之有機電致發光元件2〇〇具有 較咼的發光效率與較低的驅動電壓。 ，付〆主思的是，本實施例之有機電致發光元件200並 不限定只有兩個有機電致發光單元220a與220b，更可具 有兩個以上的有機電致發光單元。此外，在這些有機電致 =早政有機官能相㈣也可以是相同或是不相同。 二些有機電致發光單元所發出的光線可以是同一 種顏色或疋不同顏色。 【第二實施例】 -杜照本發明第二較佳實施例之有機電致發光 兀不思圖。請參考圖3,第二實施例與第-實施 之處在於:在本實施例之有機電致發光元 t中，夕個有機官能層320a、320b與320c係堆疊於 陽極層310上。此外，氧化鎢層33加係配置於相鄰的二有 機g此層320a與320b之間，而氧化鎢層3鳥係配置 鄰^有機官能層鳩與獅之間。陰極層34。係配置 於取逖離之基板210表面之有機官能層32(^上。值得一 的是，由於氧化鎢層瑜與遍可以採用蒸鑛的方 成，因此在形成氧化鷄層33加與33%的過程中不 機官能層320a或320b造成損宝。 、 更詳細而言，氧倾層施、有機官能層320a 極層310係構成-有機電致發光單元挪，因此氧化嫣層 12 1252058 15563twf.d〇c/gHowever, the light emitted by the organic functional layer 13G in the conventional organic electroluminescent device 100 is likely to be reflected or refracted due to the difference in the layers in the element. Therefore, most of the light emitted by the organic functional group is limited to the inside of the element and cannot penetrate 110 ', thus making the organic light-emitting element (10) have a low ambiguity rate. A higher driving voltage is applied to the organic electroluminescent element 100. However, the higher the driving voltage, the shorter the life of the conventional organic electroluminescent element 100. SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide an organic electroluminescent device which has better luminous efficiency. Further, it is still another object of the present invention to provide an organic electroluminescence element which has a lower driving voltage. Based on the above object or other objects, the present invention provides an organic electroluminescent device comprising a substrate, a plurality of organic electroluminescent units and at least a tungsten oxide layer (WO3 layer), wherein the organic electroluminescence The cells are stacked on the substrate, and each of the ruthenium oxide layers is between 6 1252058 15563 twf.doc/g adjacent two organic electroluminescent units. Yuan Baozheng, = Γ Γ 实 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , There is a medium anode = electricity:: the material of the layer on the organic functional layer of the light unit; the upper broad layer is a transparent conductor layer' and the transparent conductor chain, such as bismuth indium tin oxide (IT) 〇), marriage, indium zinc oxide (IZ〇) 铷 (-ninUmzinc〇xide AZ〇). In the preferred embodiment, the above-mentioned farthest from the surface of the substrate comprises a cathode layer and an organic functional layer. The organic functional layer is under the cathode layer, and the organic material located in the electroluminescent unit is: The emulsified tungsten layer is used as the anode layer. Further, the cathode layer may be a lum, magnesium, indium, tin, silver, gold or magnesium containing machine 2 in accordance with a preferred embodiment of the present invention. The acoustic transmission closest to the surface of the substrate includes an anode layer and an organic functional layer, wherein the anode is disposed on the substrate, and the organic functional layer is disposed on the anode layer; the organic functional layer of the organic electroluminescent unit is late. (10) The layer is used as a cathode layer of 7!252058 15563twf.doc/g. In addition, the cathode-cathode layer and the one with::: plate: = organic electroluminescent unit are coated with an oxide layer of the organic layer under the organic functional layer: , the surface of the above-mentioned silk _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The second right start 1 'pole layer. Each - tungsten oxide layer The substrate surface is organic;:::, and the cathode layer is disposed farthest from the embodiment, the thickness of the above-mentioned tungsten oxide layer is based on the preferred embodiment of the invention, the anode layer is a transparent conductor aluminum ... In the preferred embodiment of the present invention, the material of the cathode layer may be _, 錤' indium, tin H, gold or a magnesium-containing alloy. The board is known in the preferred embodiment of the invention, and the substrate is, for example, a glass base. A plastic substrate or a flexible substrate. The first embodiment of the present invention uses an oxide layer to connect two adjacent organic electroluminescent units or two adjacent organic functional layers as a charge generation layer. Compared with the prior art, the 8 l 252 58 15563 twf.doc / g organic electroluminescent device of the present invention has high luminous efficiency. "To make the above and other objects, features and advantages of the present invention more obvious, The preferred embodiments are described below, and in conjunction with the drawings, the syllabus, the details are as follows. <Qiaokou [Comprehensive Mode] [First Embodiment] FIG. 2 depicts an organic _ Γ Γ Γ 不 不 不 不 不 不 Γ Γ Γ Γ Γ 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机 有机a substrate 21, a plurality of organic electroluminescent sheets 220b and at least a tungsten oxide layer 23, wherein the islands and the islands are stacked on the substrate 21, and the yttrium oxide layer is placed on the organic electroluminescent units 22Qa and between. 4 = 10 is, for example, a glass substrate, a quartz substrate, a plastic substrate, or a bendable ς. In more detail, the organic electroluminescent unit 220a 3, a cathode layer, and an organic layer disposed in the anode layer 2 and the cathode spoon 2 This layer 224a. In addition, the organic functional layer 224a includes a main organic light-emitting layer, in addition to a hole, and the main input is +, (the θ # 1 a required for the piece, the hole transport layer) The electron transport layer is combined with the electron layer or the germanium layer. In addition, the anode layer 222a may be a transparent surface. Other: 9 1252058 1 5563 twf.doc/g sputtering process. Similarly, 'organic electricity is sent to the nebula - organic officer ^ ^ and the cathode layer between the mi H material, the nuclear officer (four) 224b is similar to the organic mantle layer 224a, similar to the main organic light-emitting layer, can also be based on each component == layer or It is a combination layer. The other layer 2 is applied to the electron f-wheel layer and the electron is injected into the alloy of magnesium, indium, tin, fierce, silver, gold or magnesium, and contains the wrong eight into the nvrp.s ^人人,Λ ) Mouth, magnesium indium (Mg: In) alloy, magnesium tin gold. · n a to, magnesium lanthanum (Mg: Sb) alloy or magnesium lanthanum (Mg: Te) 30 ^ = Refer to Figure 2 The thickness of the oxidized crane layer 230 is between 〇.5 and 。. In addition, the oxidized chicken layer 230 can be formed by vapor deposition to form a sound (h ectingiaye 〇, more as a charge generation layer (cgl). The aging emulsified tungsten layer can be connected to two phases (four) organic electroluminescence The unitized tungsten layer can provide injection and migration of electrons or holes. On the 200th day of the milk, #t(4) is added to the organic light-emitting element, and the layer 23 can provide an electron hole to the upper and lower sound and light units. 2In the application, the electrons and holes are combined in the upper and lower electrodes to release the luminous efficiency. 1252058 1 5563twf.doc/g Table 1 Tungsten oxide thickness yield power Efficiency Voltage External Quantum Efficiency' ^ CIEx CIEy Example 1 0 13.4 1.3 32 3.4 0.25 0.69 Example 2 1 49.2 5.5 28 12.6 0.27 0.68 Example 3 2 45.6 6.8 21 11.6 —~~~— 0.28 0.67 Example 4 4 34.9 5.5 20 8.8 0.33 0.64 Example 5 12 30.9 5.0 19 7.8 —-— 0.34 0.63 Example 6 21 25.6 4.1 20 6.7 0.35 0.62 Example 7 30 21.1 3.4 _20 5.6 —-----~ 0.37 ----- 0.61 Table 1 lists the various thicknesses. Experiment of tungsten oxide layer Please refer to Table 1. 'The current density of each example is 20mA/cm2, and the area of the organic electroluminescent unit is 3x3mm2. In addition, the example 1 has only a single organic electroluminescent unit (similar to that shown in Figure 1). Examples 2 to 7 are two organic electroluminescent unit stacks (similar to that depicted in Figure 2), wherein these examples 1 to 7 are all greenish light. In addition, the thickness of the tungsten oxide layer is in nm. Yield (yield) The unit of power is Cd/A, and the unit of power efficiency is lm/W. The unit of voltage is volt, and the unit of external quantum efficiency (EQE) is percentage (%). As the thickness decreases, the luminous efficiency (〇uminance efficiency) also increases. The luminous efficiency of Example 7 is about an example! The luminous efficiency is twice as high. The luminous efficiency of Example 2 was about four times that of the example 丨. In more detail, the luminous efficiency of Example 2 was 49.2 cd/A, 11 1252058 15563 twf.doc/g and! The release rate is 12.6%, and the CIE coordinate of the cie coordinate (x=〇.27, y=〇.68) == is (X=Q.272, y=().672). In other words, the organic electroluminescent element 2 of the present embodiment has a relatively low luminous efficiency and a low driving voltage. It is to be noted that the organic electroluminescent device 200 of the present embodiment is not limited to only two organic electroluminescent units 220a and 220b, and may have more than two organic electroluminescent units. In addition, in these organic electroluminescence = early political organic functional phase (four) may also be the same or different. The light emitted by the two organic electroluminescent units may be the same color or different colors. [Second embodiment] - The organic electroluminescence of the second preferred embodiment of the present invention is omitted. Referring to FIG. 3, the second embodiment and the first embodiment are characterized in that, in the organic electroluminescent element t of the present embodiment, the organic functional layers 320a, 320b and 320c are stacked on the anode layer 310. Further, the tungsten oxide layer 33 is disposed between the adjacent two organic layers g between the layers 320a and 320b, and the tungsten oxide layer 3 is disposed between the adjacent organic functional layer and the lion. Cathode layer 34. It is disposed on the organic functional layer 32 on the surface of the substrate 210. It is worth noting that since the tungsten oxide layer can be formed by steaming, the formation of the oxidized chicken layer 33 is increased by 33%. In the process, the non-functional layer 320a or 320b causes damage. In more detail, the oxygen layer, the organic layer 320a, the layer 310 constitutes an organic electroluminescent unit, and thus the yttrium oxide layer 12 1252058 15563twf. D〇c/g
機電致發光單元鳥的陰極層。同樣地， 另-有广有?官能層遍與氧化鶴層33%係構成 作為有機二t光!'元35Qb，因此氧化鶴層33Ga又同時 係作為有發光單元遍㈣極層’且氧化鶴層3鳥 層33% t致發光單幻遍的陰極層。同樣地，氧化鶴 #機官能層32〇c與陰極層340係構成一有機電 致；撕，因此氧化鶴層现又同時作為有機電 X早兀350C的陽極層。換言之，每一氧化鎢層都可以 連接兩相鄰的有機電致發光元件的有機官能層。 值得注意的是，第一實施例之有機電致發光單元22〇& 或的結構也可是應用至第二實施例中。舉例而言，在 一較佳實施例中，在有機官能層320a與氧化鎢層33加之 間置有一陰極層（類似圖2之陰極層22如）。在另一 較佳實施例中，在有機官能層320c與氧化鎢層330b之間 更配置有一陽極層（類似圖2之陽極層222b)。在又一較 佳實施例中，在有機官能層32〇b與氧化鎢層33〇a之間更 配置有一陽極層（類似圖2之陽極層222b)，且在有機官 能層320b與氧化鎢層3301)之間更配置有一陰極層（類似 圖2之陰極層226a)。 此外，在上述之第一實施例與第二實施例中，在陽極 層222a與310之後所形成之各膜層皆以相同（例如蒸鍍） 製程形成，因此本發明不僅可以縮短製程時間之外，更可 連續形成陽極層222a與310之後的各膜層。另外，在上述 之第一實施例與第二實施例中皆為底部發光式有機電致發 13 1252058 I5563twf.d〇c/g 无兀件 狗右將陰極層與陽極 l光r部方向射“卩成: 層作為電荷ί生ίί:::機::::元,係採用氧化鹤 =兩相鄰有機官能層;是 元件且右p τ ’本發明之有機電解来 件具有較南的發光效率與較低的驅動電壓。錢毛先 雖然本發明已以較佳實施例揭露如上，铁 J本發明，任何熟習此技藝者，在不脫離本發 =内’當可作些許之更動與潤飾，因此本發二 ^圍當視伽之t料鄕騎界定者為準。 …又 【圖式簡單說明】 圖1繪示習知有機電致發光元件的結構示意圖。 圖2緣示依照本發明第一較佳實施例之有^ 凡件的剖面示意圖。 兒级毛九 電致發光 一圖3繪示依照本發明第二較佳實施例之有機 元件的剖面示意圖。 、 【主要元件符號說明】 1〇〇:習知有機電致發光元件 110、210 :基板 120、222a、222b、310 :陽極層 130、224a、224b、320a、320b、320c :有機官能層 140、226a、226b、340 :陰極層 1252058 15563twf.doc/g 200、300 :有機電致發光元件 220a、220b、350a、350b、350c :有機電致發光單元 230、330a、330b :氧化鎢層The cathode layer of the electroluminescent unit bird. Similarly, there is a wide-ranging functional layer that is composed of 33% of the oxidized crane layer as an organic two-t light! 'element 35Qb, so the oxidized crane layer 33Ga is simultaneously used as a luminescent unit (four) pole layer' and an oxidized crane Layer 3 bird layer 33% t luminescence single cathode phantom cathode layer. Similarly, the oxidized crane # machine functional layer 32 〇 c and the cathode layer 340 constitute an organic electricity; tear, so that the oxidized crane layer is now also used as the anode layer of the organic electricity X early 350C. In other words, each tungsten oxide layer can connect the organic functional layers of two adjacent organic electroluminescent elements. It is to be noted that the structure of the organic electroluminescent unit 22 〇 & or of the first embodiment can also be applied to the second embodiment. For example, in a preferred embodiment, a cathode layer (like the cathode layer 22 of Figure 2) is disposed between the organic functional layer 320a and the tungsten oxide layer 33. In another preferred embodiment, an anode layer (similar to anode layer 222b of Figure 2) is disposed between organic functional layer 320c and tungsten oxide layer 330b. In still another preferred embodiment, an anode layer (similar to the anode layer 222b of FIG. 2) is disposed between the organic functional layer 32〇b and the tungsten oxide layer 33〇a, and the organic functional layer 320b and the tungsten oxide layer are disposed. A cathode layer (similar to the cathode layer 226a of FIG. 2) is further disposed between 3301). Further, in the first embodiment and the second embodiment described above, the respective film layers formed after the anode layers 222a and 310 are formed by the same (e.g., evaporation) process, so that the present invention can not only shorten the process time Further, each of the film layers after the anode layers 222a and 310 can be formed continuously. In addition, in the first embodiment and the second embodiment described above, the bottom-emitting organic electroluminescence 13 1252058 I5563twf.d〇c/g is innocent, and the cathode layer and the anode l are irradiated in the direction of the r portion.卩成: The layer as the electric charge ί ίί::: machine:::: element, using oxidized crane = two adjacent organic functional layers; is the element and right p τ 'the organic electrolysis of the invention has a relatively south luminescence Efficiency and lower driving voltage. Although the invention has been disclosed in the preferred embodiment as above, the invention of the present invention, any skilled person in the art, can make some changes and refinements without departing from the present invention. Therefore, the present invention is based on the definition of the gamma t-bike. [Brief description] FIG. 1 is a schematic view showing the structure of a conventional organic electroluminescent device. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 3 is a cross-sectional view showing an organic component in accordance with a second preferred embodiment of the present invention. 1〇〇: conventional organic electroluminescent elements 110, 210: substrates 120, 222a , 222b, 310: anode layer 130, 224a, 224b, 320a, 320b, 320c: organic functional layer 140, 226a, 226b, 340: cathode layer 1252058 15563twf.doc / g 200, 300: organic electroluminescent elements 220a, 220b , 350a, 350b, 350c: organic electroluminescent unit 230, 330a, 330b: tungsten oxide layer
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