1243000 九、發明說明： 【發明所屬之技術領域】 本發明係關於-種發光裝置，特別關於—種有機電激 發光裝置。 【先前技術】 有機電激發光顯示面板具有自發光、無視角限制、省 電、製程簡易、低成本、操作溫度範圍廣、高應答速度以 及王彩化等性質，使其具有極大的潛力，可望成為新世代 平面顯示面板之主流；有機電激發光顯示面板係由有機電 激發光元件所構成，有機電激發光元件係利用有機官能性 材料(organic functional materials)的自發光的特性來達到 顯示效果，可依照材料的分子量不同分為小分子有機電激 發光元件(small molecule OLED，SM-OLED)與高分子有機 電激發光元件(P〇lymer Hght-emitting device，PLED)兩大 類。 如圖1所示，習知有機電激發光裝置1係包含一基板 11與至少一有機電激發光元件10設置於基板11上；其 中，有機電激發光元件丨〇包含一陽極12、至少一有機官 能層13以及一陰極14 ’其作用原理係對電極施以電流’ 使電洞和電子在有機官能層13内再結合(recombination)而 產生激子時，便可使有機官能層13依照其材料之特性， 而產生不同顏色之放光機制。 有機電激發光裝置1 一般之製程係包含了基板11處 1243000 理、有機官能層13鍍膜、陽極12與陰極14濺鍍或蒸鍍、 有機電激發光元件10封裝與測試，其中，就有機官能層 13鍍膜而言，SM-OLED之小分子有機材料係於真空環境 下利用加熱蒸鍍(evaporation)等乾製程(dry process)成膜； 而PLED之高分子有機材料則係事先溶於溶劑，在低水、 氧含量的環境下利用旋轉塗佈（spin coating)或喷墨印刷 (ink_jet printing)等濕製程(wet process)成膜。 濕製程方式雖然快速、簡易，然而卻存在著先天上的 製程限制，其中最大的限制即是無法達到全彩化之目的， 舉例來說，若以不同顏色之材料分多層以旋轉塗佈製程於 有機官能層13巾形成複數發光層，不同顏色之材料間會 出現互相溶解之情形，而造成無法製作出多彩及全彩之平 面顯示面板。 雖然習知應用喷墨印刷方式以高純度之讎顏色材 ^及晝素粒緑生全彩，但_㈣本衫穩定之因 , 赞先政率、亮度及壽命。 爰因於此，如何提供—種 彼此不互溶之發光層以達到成多層不同顏色材料j 裝置，實為§刖有機電激發光裝置的重要課題之… L發明内容】 有鑑於上述課題，本發明 層結構於兩發光層之間的為提供一種包^1243000 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to one kind of light emitting device, and particularly to one kind of organic electroluminescent light emitting device. [Previous technology] Organic electroluminescent display panels have properties such as self-emission, no viewing angle limitation, power saving, simple manufacturing process, low cost, wide operating temperature range, high response speed, and Wang Caihua, which have great potential and are expected to become The mainstream of the new generation of flat display panels; organic electroluminescent display panels are composed of organic electroluminescent elements. Organic electroluminescent elements use the self-luminous characteristics of organic functional materials to achieve display effects. According to the molecular weight of the materials, it can be divided into two categories: small molecule organic light-emitting devices (SM-OLED) and polymer organic light-emitting devices (PLED). As shown in FIG. 1, a conventional organic electroluminescent device 1 includes a substrate 11 and at least one organic electroluminescent device 10 disposed on the substrate 11, wherein the organic electroluminescent device includes an anode 12 and at least one Organic functional layer 13 and a cathode 14 'The principle of action is to apply an electric current to the electrode' When holes and electrons are recombined in the organic functional layer 13 to generate excitons, the organic functional layer 13 can be made according to its The characteristics of the material produce different colors of light. Organic electroluminescent device 1 The general manufacturing process includes 123,000 substrates on 11 substrates, organic functional layer 13 coating, sputtering or evaporation of anode 12 and cathode 14, organic electroluminescent device 10 packaging and testing, among which organic In the case of layer 13 coating, SM-OLED small-molecule organic materials are formed in a vacuum process using a dry process such as evaporation; and PLED polymer organic materials are previously dissolved in a solvent. In a low water and oxygen content environment, a film is formed by a wet process such as spin coating or inkjet printing. Although the wet process method is fast and easy, there are inherent process limitations. The biggest limitation is that it cannot achieve the purpose of full color. For example, if different color materials are used in multiple layers to spin-coat the process, The organic functional layer 13 forms a plurality of light-emitting layers, and materials of different colors may dissolve with each other, which makes it impossible to produce colorful and full-color flat display panels. Although it is known to apply inkjet printing to high-purity 雠 color materials and day-to-day grain green and full-color, but the reason for the stability of the shirt, praises the rate, brightness and life.爰 Because of this, how to provide a kind of immiscible light-emitting layers to achieve multiple layers of different color materials is an important issue of § 刖 Organic electro-excitation light devices ... L SUMMARY OF THE INVENTION In view of the above problems, the present invention The layer structure between the two light-emitting layers provides a package ^
材料之發光層彼此不互先裝置’使不I J整發光顏色之目丨 1243000 為達上述目的，依據本發明之一種有機電激發光裝置 包令^基板、一第一電極、一有機官能層、一第二電極以 及一第一阻隔層。第一電極係設置於基板上；有機官能層 係設置於第一電極上，其係包含一第一發光層與一第二發 光層，第二發光層係設置於第一發光層之上；第二電極係 設置於有機官能層上；第一阻隔層係設置於第一發光層與 奏一發光層之間。 為達上述目的，依據本發明之另一種有機電激發光裝 置至少包含一第一電極、一有機官能層以及一第二電極依 序設置於一基板上；其中，有機官能層係包含至少二發光 層’發光層之間設置至少一阻隔層。 於本發明中，有機電激發光裝置係為高分子有機電激 發光裝置。 承上所述，因依據本發明之有機電激發光裝置所包含 之阻隔層可利用例如蒸鍍等乾製程方式形成於發光層之 間，且阻隔層之材質可為導電材質，例如鋁、鎳等等，由 於阻隔層有效阻隔不同顏色材料分別構成的發光層，因此 解決習知運用旋轉塗佈或噴墨印刷製程來形成不同顏色 材料之發光層時可能發生的材料互溶情形，而提供一種可 利用多層發光層來達到調整發光顏色之有機電激發光裝 置。 【實施方式】 以下將參照相關圖式，說明依本發明較佳實施例之有 1243000 機電激發光裝置，其中相同的元件將以相同的參照符號加 ΙίΛ說明。 請參照圖2所示，依據本發明較佳實施例之— 電激發光裝置2包含-基板21、—第_電極22、〜有 官能層23、一第二電極24以及一第一阻隔層25。 第一電極22、有機官能層23與第二電極24係冰 置於基板21上。 序口又 有機S月b層23係包含一第一發光層231與一第二發 光層232’第一發光層232係設置於第一發光層231之上， 第一阻隔層25則係設置於第一發光層231與第二發光層’ 232之間。 如圖3所示，依據本發明較佳實施例之一種有機電激 發光裝置2之有機官能層23更包含一第三發光層幻3，有 機電激發光裝置2可更包含一第二阻隔層26,第三發光層 233設置於第二發光層232之上，而第二阻隔層26則設置 於第二發光層232與第三發光層233之間。在本實施例 中，有機電激發光裝置2並不僅限於三層發光層，更可包 含一第四發光層等形成於第三發光層233之上，當然亦不 僅限於兩層阻隔層，更可包含一第三阻隔層等形成於第四 發光層與第三發光層233之間。發光層之間亦可設置至少 一阻隔層。 為使本發明之内容更容易理解，以下以高分子有機電 激發光裝置為例並請參照圖2與圖3所示，以說明本發明 車父佳貫細例之有機電激發光裝置2之製程。 1243000 首先，基板21係可選自剛性基板、柔性基板、玻璃 基板、塑膠基板及矽基板至少其中之一，且基板21的材 質係為聚甲基丙稀甲酯（Polymethylmethacrylate， PMMA)、塑膠、高分子、玻璃及矽至少其中之一。 第一電極22通常為陽極，其材質係可為導電之金屬 氧化物，導電之金屬氧化物係選自銦錫氧化物、鋁辞氧化 物、銦辞氧化物及鎘錫氧化物至少其中之一，例如係用濺 鍍(sputtering)或離子電鍍(ion plating)等方式形成於基板 21上。 有機官能層23通常包含一電洞注入層234、一第一發 光層231與一第二發光層232及其組合，當然，亦可依據 實際需要，更包含一第三發光層等等，其中電洞注入層234 之材質係可為聚乙烯二氧硫二烯(poly 3-4-ethylenedioxythiophene，PEDOT)以例如旋轉塗佈、沉 浸或噴淋等之方式，形成於第一電極22上；第一發光層 231之材質係可為聚苯乙烯(p〇iy phenyiene vinyiene， PPV)，例如〇range_ppv，以旋轉塗佈、沉浸或喷淋等方 式形成於電洞注入層234上；第二發光層232之材質係可 為共聚物電激發光高分子(polyfluorene，PF)，例如 Blue-PF，以旋轉塗佈、沉浸或喷淋等方式形成於第一發光 層231之上，發光層231、232之厚度範圍可為1〇2微米（// m)至1〇4微米（/zm)之間，而發光層之材料的顏色、濃度與 形成厚度的選擇可依據實際所需而組合配置，以製作出預 定之發光顏色與亮度。 1243000 於第一發光層231與第二發光層232之間則設置一第 一阻隔層25，其材質係為導電材質且不溶於第一發光層 231與第二發光層232之材質，例如可為鋁、鎳、氟化鋰、 二氟化鉋、氟化鋇、氟化鈣及聚乙烯二氧硫二烯至少其中 之一，以旋轉塗佈、蒸鍍或濺鍍等方式形成厚度範圍界於 10被米（/zm)至1〇3微米（^m)之間，亦可依據實際需求， 依據上述之發光層配置，形成一第二阻隔層26於第二發 光層232與第三發光層233之間。 第二電極24通常作為陰極，其材質係可為導電材質， 導電材質係選自鋁、鈣、鎂、銦、錫、錳、銅、銀、金及 其合金至少其中之一，含鎂之合金可為鎂銀合金、鎂銦合 金、鎮錫合金、鎂銻合金或鎂碲合金，利用濺鍍或離子電 鍍等方法形成於有機官能層23上。 承上所述，第一電極22與第二電極24之材質與作為 陰陽極之應用，可依據實際需求加以互換。 於本實施例中，有機電激發光裝置係為高分子有機電 激發光裝置。 綜上所述，依據本發明較佳實施例之有機電激發光裝 置係於第一發光層與第二發光層之間設置有一第一阻隔 層，由於第一阻隔層利用不溶於發光層材質之導電材質， 以乾製程例如蒸鍍、濺鍍等方式形成於發光層之間，因此 有效解決兩發光層不同顏色材料之間互溶之情形，由此當 進一步調整發光材料之組合以發出白光，加以搭配彩色濾 光片，即可輕易製作出全彩之有機電激發光裝置。利用不 1243000 同顏色發光層的配置亦可發出多色光，是以解決了目前習 知技術中僅能發出單色光的技術瓶頸。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1為一顯示習知之有機電激發光顯示面板之示意 圖， 圖2為一顯示依據本發明較佳實施例之有機電激發光 裝置的示意圖；以及 圖3為一顯示依據本發明較佳實施例之另一有機電激 發光裝置的示意圖。 元件符號說明： 1 有機電激發光裝置 10 有機電激發光元件 11 基板 12 陽極 13 有機官能層 14 陰極 2 有機電激發光裝置 21 基板 第一電極 22 1243000 23 有機官能層 231第一發光層 232第二發光層 233第三發光層 234 電洞注入層 24 第二電極 25 第一阻隔層 26 第二阻隔層The light-emitting layers of the materials are not mutually preceded by each other, so that the color of the light can not be adjusted. In order to achieve the above purpose, an organic electro-optical light-emitting device according to the present invention includes a substrate, a first electrode, an organic functional layer, A second electrode and a first barrier layer. The first electrode is disposed on the substrate; the organic functional layer is disposed on the first electrode, which includes a first light-emitting layer and a second light-emitting layer, and the second light-emitting layer is disposed on the first light-emitting layer; The two electrodes are disposed on the organic functional layer; the first barrier layer is disposed between the first light-emitting layer and the first light-emitting layer. To achieve the above object, another organic electroluminescent device according to the present invention includes at least a first electrode, an organic functional layer, and a second electrode sequentially disposed on a substrate; wherein the organic functional layer includes at least two light emitting devices. At least one barrier layer is disposed between the layers' emitting layers. In the present invention, the organic electroluminescent device is a polymer organic electroluminescent device. As mentioned above, the barrier layer included in the organic electroluminescent device according to the present invention can be formed between the light-emitting layers by a dry process such as evaporation, and the material of the barrier layer can be a conductive material, such as aluminum or nickel. Wait, because the barrier layer effectively blocks the light-emitting layers made of materials of different colors, it solves the mutual miscibility of materials that may occur when the spin-coating or inkjet printing process is used to form light-emitting layers of different colors, and provides a kind of An organic electroluminescence device using a plurality of light-emitting layers to adjust the emission color. [Embodiment] Hereinafter, a 1243000 electromechanical excitation light device according to a preferred embodiment of the present invention will be described with reference to related drawings, in which the same components will be described with the same reference numerals. Please refer to FIG. 2. According to a preferred embodiment of the present invention, the electro-optical device 2 includes a substrate 21, a first electrode 22, a functional layer 23, a second electrode 24, and a first barrier layer 25. . The first electrode 22, the organic functional layer 23, and the second electrode 24 are placed on the substrate 21 with ice. Sequential and organic Sb layer 23 includes a first light-emitting layer 231 and a second light-emitting layer 232. The first light-emitting layer 232 is disposed on the first light-emitting layer 231, and the first barrier layer 25 is disposed on Between the first light emitting layer 231 and the second light emitting layer '232. As shown in FIG. 3, according to a preferred embodiment of the present invention, the organic functional layer 23 of an organic electroluminescent device 2 further includes a third light emitting layer 3, and the organic electroluminescent device 2 may further include a second barrier layer. 26. The third light-emitting layer 233 is disposed on the second light-emitting layer 232, and the second barrier layer 26 is disposed between the second light-emitting layer 232 and the third light-emitting layer 233. In this embodiment, the organic electroluminescent device 2 is not limited to three light-emitting layers, and may include a fourth light-emitting layer and the like formed on the third light-emitting layer 233. Of course, it is not limited to two barrier layers. A third barrier layer and the like are formed between the fourth light emitting layer and the third light emitting layer 233. At least one barrier layer may be provided between the light emitting layers. In order to make the content of the present invention easier to understand, a polymer organic electroluminescent device is taken as an example below, and please refer to FIG. 2 and FIG. 3 to describe a detailed example of the organic electroluminescent device 2 of the car driver's best practice of the present invention. Process. 1243000 First, the substrate 21 may be selected from at least one of a rigid substrate, a flexible substrate, a glass substrate, a plastic substrate, and a silicon substrate, and the material of the substrate 21 is polymethylmethacrylate (PMMA), plastic, At least one of polymer, glass and silicon. The first electrode 22 is usually an anode. The material of the first electrode 22 may be a conductive metal oxide. The conductive metal oxide is at least one selected from indium tin oxide, aluminum oxide, indium oxide, and cadmium tin oxide. For example, the substrate 21 is formed by sputtering, ion plating, or the like. The organic functional layer 23 generally includes a hole injection layer 234, a first light-emitting layer 231, a second light-emitting layer 232, and combinations thereof. Of course, it may also include a third light-emitting layer and the like according to actual needs. The material of the hole injection layer 234 may be poly 3-4-ethylenedioxythiophene (PEDOT) formed on the first electrode 22 by, for example, spin coating, immersion, or spraying; The material of the light-emitting layer 231 may be polystyrene (p〇iy phenyiene vinyiene, PPV), such as orange_ppv, which is formed on the hole injection layer 234 by spin coating, immersion or spraying; the second light-emitting layer 232 The material can be a copolymer polyfluorene (PF), such as Blue-PF, which is formed on the first light-emitting layer 231 by spin coating, immersion or spraying. The thickness can range from 102 micrometers (// m) to 104 micrometers (/ zm), and the choice of color, concentration, and thickness of the material of the light-emitting layer can be combined and configured according to actual needs to produce Show the predetermined luminous color and brightness. 1243000 A first barrier layer 25 is provided between the first light-emitting layer 231 and the second light-emitting layer 232. The material is a conductive material and is insoluble in the first light-emitting layer 231 and the second light-emitting layer 232. For example, it can be At least one of aluminum, nickel, lithium fluoride, difluoride planer, barium fluoride, calcium fluoride, and polyethylene dioxysulfadiene is formed in a thickness range by spin coating, evaporation, or sputtering. Between 10 m (/ zm) and 103 micrometers (^ m), a second barrier layer 26 may be formed on the second light-emitting layer 232 and the third light-emitting layer according to the actual needs and according to the above-mentioned light-emitting layer configuration. Between 233. The second electrode 24 is generally used as a cathode. The material of the second electrode 24 may be a conductive material. The conductive material is at least one selected from the group consisting of aluminum, calcium, magnesium, indium, tin, manganese, copper, silver, gold, and alloys thereof, and alloys containing magnesium. It can be a magnesium-silver alloy, a magnesium-indium alloy, a tin-tin alloy, a magnesium-antimony alloy, or a magnesium-tellurium alloy, and is formed on the organic functional layer 23 by a method such as sputtering or ion plating. As mentioned above, the materials of the first electrode 22 and the second electrode 24 and their applications as cathodes and anodes can be interchanged according to actual needs. In this embodiment, the organic electroluminescent device is a polymer organic electroluminescent device. In summary, the organic electroluminescent device according to the preferred embodiment of the present invention is provided with a first barrier layer between the first light-emitting layer and the second light-emitting layer. Since the first barrier layer uses an insoluble material of the light-emitting layer, The conductive material is formed between the light-emitting layers in a dry process such as evaporation, sputtering, etc. Therefore, it is effective to solve the situation where the two light-emitting layers are mutually soluble in different color materials. Therefore, when the combination of the light-emitting materials is further adjusted to emit white light, With color filters, full-color organic electroluminescent devices can be easily produced. Multi-color light can also be emitted by using different configurations of the light emitting layers of 1243000, which solves the technical bottleneck that can only emit monochromatic light in the conventional technology. The above description is exemplary only, and not restrictive. Any equivalent modification or change made without departing from the spirit and scope of the present invention shall be included in the scope of the attached patent application. [Brief description of the drawings] FIG. 1 is a schematic diagram showing a conventional organic electroluminescent display panel, FIG. 2 is a schematic diagram showing an organic electroluminescent device according to a preferred embodiment of the present invention; and FIG. 3 is a display basis Schematic view of another organic electro-optic device according to a preferred embodiment of the present invention. Description of component symbols: 1 organic electroluminescent device 10 organic electroluminescent device 11 substrate 12 anode 13 organic functional layer 14 cathode 2 organic electroluminescent device 21 substrate first electrode 22 1243000 23 organic functional layer 231 first light emitting layer 232th Two light emitting layers 233, third light emitting layer 234, hole injection layer 24, second electrode 25, first barrier layer 26, second barrier layer