201042761 六、發明說明： ' 【發明所屬之技術領域】 本發明係有關有機電激發光顯示器，對於更詳細係有 關包含可進行多色顯示之彩色濾光片，及具備該彩色濾光 片之有機多色發光顯示元件的有機電激發光顯示器。 【先前技術】 q 作爲色變換有機電激發光顯示器之製造方法，有著（ 1)於基板上形成色變換濾光片之後，於其上方形成發光 部的方法、（2 )於基板上形成發光部之後，於其上方形 - 成色變換濾光片的方法，並且，（3 )於基板上形成色變 • 換濾光片，於其他的基板上形成發光部之後，接近兩者而 組裝色變換有機電激發光顯示器之方法的3種類。 (1 )及（2 )係以特定的順序形成色變換濾光片與發 光部之所謂稱作逐次形成之方法，但對於從之後形成之部 Q 分的工程，產生有限制。例如，作爲發光部之材料而使用 低分子系材料之情況，在之後的工程使用溫度與溶劑與對 於既形成部位而言之損傷則變大之故，如保護既形成部位 之工程，或對於既形成部位而言之保護層的形成則成爲必 要。 (3)之製造方法係可稱作貼合者。在（3)之製造方 法中，對於色變換濾光片與發光部，可使用個別之工程者 . 之故，對於製造工程而言之限制變少’更可容易地製造者 . 。但對於貼合之情況’係有從發光部所發射的光乃射入至 -5- 201042761 色變換濾光片之鄰接的畫素，產生有混色者。 在國際公開第9 8/3 443 7號說明書中，爲了防止混色 ，提案有擴大與鄰接畫素之間的遮光層之寬度者。另一方 面，（3 )之經由貼合之製造方法的本質，係經由貼合的 工程，光學性地接合發光部與色變換濾光片者。即，由將 來自發光部的光，盡可能減少損失，而更多到達至色變換 濾光片者，關連於提昇發光裝置全體之效率者。 〔先前技術文獻〕 〔專利文獻〕 [專利文獻1]國際公開第98/34437號說明書 【發明內容】 〔發明欲解決之課題〕 但在以往技術中，進行貼合發光部與色變換濾光片之 情況，發光部與色變換濾光片之間的間隙係無法成爲零， 而產生有一定程度之間隔，其間隔大時，有著顯示器之效 率下降之課題。 本發明係有鑑於如此之課題所作成之構成，其目的係 提供：由提昇從發光部所射出的光之中，射入至色變換濾 光片的光之比例者’提昇顯示器全體之效率的色變換方式 之有機電激發光顯示器。 〔爲解決課題之手段〕 爲了解決上述之課題，本發明係屬於貼合將經由施加 -6- 201042761 電壓者而發光之發光層，配置於至少一方乃具有可視光透 ' 過性之一對的電極間之發光部，和進行由該發光部所產生 的光之波長分布變換的色變換瀘光片之色變換方式的有機 電激發光顯示器，其特徵乃連結前述發光部的開口之端部 與前述色變換濾光片的開口之端部的線，和對於前述發光 部之開口而言之垂線所成角度乃在前述發光部之發光強度 的出射角度分布，較傳達最大光強度之角度爲大，且前述 0 發光部之開口係較前述色變換濾光片的開口爲窄者。 另外，前述有機電激發光顯示器，其特徵乃連結前述 發光部的開口之端部與前述色變換濾光片的開口之端部的 - 線，係連結與從前述發光部的開口之頂點或邊上的點最接 近之前述色變換濾光片的開口之頂點或邊上的點的線者。 〔發明之效果〕 本發明係在有機電激發光顯示器，由提昇從發光部所 〇 射出的光之中，射入至色變換濾光片的光之比例者’可得 到提昇顯示器全體之效率的效果。 【實施方式】 以下，對於本發明之實施形態加以詳細說明。 於有機電激發光部與色變換濾光片間的間隙打開之情 況，對於爲何顯示器之效率下降，就在顯示器內部之發光 的舉動加以說明。 從有機電激發光部所發射的光係具有角度依存性而擴 201042761 散於發光部之前面各方向加以射出。當來自其有機電激發 光部之射出光乃入射至色變換濾光片時，引起依存於色變 換濾光片之吸收光譜之光吸收。接著，經由吸收的光而激 發色變換濾光片內部的螢光色素，發光成螢光。此時產生 的螢光之放射角係與來自有機電激發光部的光之入射方向 獨立決定。但，使用於由色變換濾光片所變換之顯示的畫 素發光之強度係經由從有機電激發光部加以射出，從各方 向射入至色變換濾光片的光量而決定。 未使用色變換濾光片之有機電激發光顯示器之情況， 經由上述之有機電激發光部之特性所放射的光係擴散開之 故，當放置一定距離而觀測發光強度時，只觀測到進行觀 測之方向的角度附近之發光。即，例如對於從垂直方向觀 測面板之情況，只觀測到對於垂直方向之發光的強度。 對此，在使用色變換濾光片之有機電激發光顯示器中 ，顯示器的亮度乃依存於入射至色變換濾光片之全入射光 。即，對於直接觀測從有機電激發光部射出的光之情況， 未在觀測範圍的光，亦對於色變換濾光片射入，並可激發 螢光之故，可貢獻於顯示器之亮度。 在此，對於有機電激發光元件之發光的出射角度依存 性加以說明。將來自電激發光元件之發光強度的出射角度 依存性，作成由一般的極座標表現者。即，如圖5所示， 電激發光元件之發光面係配置於XY平面內，從Z軸的角 度乃定義爲Θ，XY平面內之角度乃定義爲φ。將角度0稱 作出射角度。從電激發光元件垂直出現的光係成爲出射角 -8- 201042761 度零度。亮度L之3次元之發光角度分布乃Θ與φ之函數 ，可寫爲L(e，Φ)。發光面係只在電激發光元件之1表面 而未出現於背面之故，在特定角度β之發光總量係電激發 光元件之外觀面積乃從S.COS0之情況，可寫爲L(0，（i>)s • co s0。在此，s係角度Θ之光束的微小面積。將此，在極 座標空間進行積分。積分係在0$θ$π/2、0$φ $2π之範 圍進行。極座標之體積要素係r2*sirx0d0d<|) dr之故，結果 Q ，電激發光元件全體之發光強度I係可寫爲： [數1] α η 7 = f ^ f ^ cos θ sin ωθά^ ⑴ 在此，經由電激發光元件之發光係Lambertian，即， 在任何發光角度，亦採用亮度乃一定的假設。此假設係未 考慮電激發光之干擾之情況，即在只來自薄的有機材料膜 Q 之發光中，比較佳成立之構成。此時，上述之L(0，φ )係可寫爲未經由θ，φ之定數L。因此，可將（1 )式的 L，拿出於積分之外者，成爲： [數2] _ Λ I = ^cosQsinθάθάφ ( 2 ) 在Φ先行進行積分，從三角函數的公式，可寫爲： -9- 201042761201042761 VI. Description of the Invention: 'Technical Fields According to the Invention>> The present invention relates to an organic electroluminescent display, and more particularly relates to a color filter including a multicolor display and an organic filter having the same An organic electroluminescent display of a multi-color light-emitting display element. [Prior Art] q As a method of manufacturing a color-converted organic electroluminescence display, (1) a method of forming a light-emitting portion above a color conversion filter on a substrate, and (2) forming a light-emitting portion on the substrate Then, on the square-color conversion filter method, and (3) forming a color change/replacement filter on the substrate, forming a light-emitting portion on the other substrate, and then assembling the color change Three types of methods for electromechanical excitation of light displays. (1) and (2) are a so-called sequential formation method in which the color conversion filter and the light-emitting portion are formed in a specific order, but there is a limit to the engineering of the portion Q formed later. For example, when a low molecular weight material is used as the material of the light-emitting portion, the subsequent engineering use temperature and the solvent and the damage to the formed portion become large, such as the work of protecting the formed portion, or The formation of a protective layer in the formation site is necessary. The manufacturing method of (3) may be referred to as a fitter. In the manufacturing method of (3), an individual engineer can be used for the color conversion filter and the light-emitting portion. Therefore, restrictions on manufacturing engineering are reduced, and it is easier to manufacture. However, in the case of bonding, the light emitted from the light-emitting portion is incident on the adjacent pixel of the -5 - 201042761 color conversion filter, and a color mixture is generated. In the specification of International Publication No. 9 8/3 443, in order to prevent color mixing, it is proposed to expand the width of the light shielding layer between adjacent pixels. On the other hand, (3) is the essence of the manufacturing method by bonding, and the light-emitting portion and the color conversion filter are optically bonded via a bonding process. In other words, if the light from the light-emitting portion is reduced as much as possible, and more is reached to the color-converting filter, it is related to the efficiency of improving the entire light-emitting device. [Prior Art] [Patent Document 1] International Patent Publication No. 98/34437 [Draft of the Invention] [Problems to be Solved by the Invention] However, in the prior art, a light-emitting portion and a color conversion filter are bonded. In this case, the gap between the light-emitting portion and the color conversion filter cannot be zero, and there is a certain degree of interval. When the interval is large, the efficiency of the display is lowered. The present invention has been made in view of such a problem, and an object of the present invention is to provide an increase in the efficiency of the entire display by increasing the ratio of light incident on the color conversion filter among the light emitted from the light-emitting portion. An organic electroluminescent display of a color conversion method. [Means for Solving the Problem] In order to solve the above problems, the present invention relates to a light-emitting layer that emits light by applying a voltage of -6 to 201042761, and at least one of them has a visible light transmittance. A light-emitting portion between electrodes and a color conversion type organic electroluminescence display for converting a wavelength distribution of light generated by the light-emitting portion, wherein an end portion of the opening of the light-emitting portion is connected The angle between the line at the end of the opening of the color conversion filter and the perpendicular to the opening of the light-emitting portion is an angle of the exit angle of the light-emitting intensity of the light-emitting portion, which is larger than the angle at which the maximum light intensity is transmitted. And the opening of the zero light emitting portion is narrower than the opening of the color conversion filter. Further, the organic electroluminescent display device is characterized in that a line connecting an end portion of an opening of the light-emitting portion and an end portion of an opening of the color conversion filter is connected to a vertex or a side of an opening from the light-emitting portion The upper point is closest to the line of the apex of the opening of the color conversion filter or the point on the side. [Effects of the Invention] In the present invention, in the organic electroluminescence display, the ratio of the light incident on the color conversion filter among the light emitted from the light-emitting portion can improve the efficiency of the entire display. effect. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail. When the gap between the organic electroluminescence portion and the color conversion filter is turned on, the behavior of the illumination inside the display is explained as to why the efficiency of the display is lowered. The light system emitted from the organic electroluminescence portion is expanded in accordance with the angle dependency. 201042761 is emitted in the front direction of the light-emitting portion. When the emitted light from the organic electroluminescence portion is incident on the color conversion filter, light absorption depending on the absorption spectrum of the color conversion filter is caused. Next, the fluorescent dye inside the color conversion filter is excited by the absorbed light to emit fluorescence. The radiation angle of the fluorescence generated at this time is independently determined from the incident direction of light from the organic electroluminescence portion. However, the intensity of the pixel light emitted for display by the color conversion filter is determined by the amount of light that is emitted from the organic electroluminescence portion and is incident on the color conversion filter from all directions. In the case of an organic electroluminescence display that does not use a color conversion filter, the light emitted by the characteristics of the above-described organic electroluminescence portion is diffused, and when a certain distance is placed and the emission intensity is observed, only observation is performed. Illumination near the angle of the direction of observation. That is, for example, in the case of observing the panel from the vertical direction, only the intensity of the light emission in the vertical direction is observed. In this regard, in an organic electroluminescent display using a color conversion filter, the brightness of the display depends on the total incident light incident on the color conversion filter. In other words, in the case where the light emitted from the organic electroluminescence portion is directly observed, the light that is not in the observation range is incident on the color conversion filter, and the fluorescence can be excited to contribute to the brightness of the display. Here, the dependence of the emission angle of the light emission of the organic electroluminescence element will be described. The angle of dependence of the luminous intensity from the electroluminescence element is expressed as a general polar coordinate. That is, as shown in Fig. 5, the light-emitting surface of the electroluminescence element is arranged in the XY plane, the angle from the Z-axis is defined as Θ, and the angle in the XY plane is defined as φ. The angle 0 is called the angle of incidence. The light system that appears vertically from the electroluminescent element becomes an exit angle of -8 - 201042761 degrees zero degrees. The luminous angle distribution of the three-dimensional luminance L is a function of Θ and φ and can be written as L(e, Φ). The illuminating surface is only on the surface of the electroluminescent element 1 and does not appear on the back side. The total amount of illuminating at a specific angle β is the appearance area of the electroluminescent element from S. COS0, which can be written as L (0). , (i>)s • co s0. Here, s is the small area of the beam of the angle 。. This is integrated in the polar coordinate space. The integral is in the range of 0$θ$π/2, 0$φ $2π The volume element of the polar coordinate is r2*sirx0d0d<|) dr, and the result is that the luminous intensity I of the entire electroluminescent element can be written as: [Number 1] α η 7 = f ^ f ^ cos θ sin ωθά ^ (1) Here, the illumination system Lambertian via the electroluminescence element, that is, at any illumination angle, assumes that the luminance is constant. This assumption is based on the fact that the interference of the electro-excitation light is not considered, that is, in the light emission from only the thin organic material film Q, the composition is preferably established. At this time, the above L(0, φ) can be written as a constant number L that does not pass θ, φ. Therefore, L of equation (1) can be taken out of the integral, and become: [number 2] _ Λ I = ^cosQsinθάθάφ ( 2 ) Integral in Φ, the formula from the trigonometric function can be written as: -9- 201042761
/ = ^ cos 0 sin θάθάφ =^ άφ^LcosOsinOde π =2/dL ^ cos Θ sin θάθ (3) = 2πί^-Β\η2θάθ * 2 x =πί ^ sin 2θάθ 在最後的式，被積分函數係sin20之故，將發光分布 作爲角度Θ之函數而視時’發光光量的分布係了解到與 sin20成比例。 於圖6，顯示發光乃未經由角度而亮度一定之情況的 有機電激發光元件的發光強度之出射角度分布。成爲對於 來自電激發光元件的出射角度45度具有最大値之正弦曲 線。其圖表係射入至色變換濾光片而貢獻於螢光之激發的 電激發光的光之中，在垂直之90度時，成爲零，在中間 的角度成爲最大。對於發光面而言，出現於垂直之正面的 電激發光的光係對於在通常肉眼等而觀察之情況，爲決定 亮度之重要的要素，但關於色變換濾光片之激發，可無視 其貢獻的程度而變小。此係出射角度乃零度的光之照射範 圍，雖只爲正面的一點，但因Θ並非零度之情況，即使相 同之Θ的情況，變化之軌道上乃亦成爲照射範圍之故’ Θ乃零度之情況，光量乃相對地變得非常地小。並且’對 -10- 201042761 於原本的發光分布乃L a m b e r t i a η之情況，即，經由電激發 光元件的發光，未經由角度而亮度一定之情況係最大貢獻 之角度爲45°。 電激發光強度的出射角度分布係如使用薄膜之光學模 擬軟體，亦可進行預測，或實測者。可以於具有與從電激 發光元件光導至色變換濾光片之媒體相同折射率的液體中 ，浸漬有機電激發光元件，測定發光之角度依存性者而得 Q 到。於圖7，顯示如此所得到之有機電激發光元件之媒體 中（η = 1 .5 )發光強度之出射角度分布例。此等複數之測 定値係變化電激發光元件之薄膜構成者，但了解到主要於 3 0°〜60°之範圍，出現發光強度最大的位置者。 賦予從電激發光元件之端部，以最大出射角度0max所 射出的光線，可射入至色變換濾光片之條件的情況，對於 色變換濾光片之入射光量係以在〇 S Θ S 之範圍，將電 激發光元件之出射光分布進行積分者而求得。對於其入射 〇 光量的Θ而言之變化係因將入射光量，作爲對於θ而言進 行微分之函數所表示之故，爲在導出入射光量時所使用之 被積分函數，即，其出射光分布者。也就是，在電激發光 元件之出射光分布乃成爲最大之角度，最爲急劇地產生對 於色變換濾光片之入射光量的變化。即，將對於色變換濾 光片之入射光量作爲Θ之函數的情況，Θ的臨界値乃電激 發光元件之發光強度的出射角度分布乃成爲最大之角度。 . 隨之，經由將色變換濾光片與有機電激發光部之位置 關係，呈成爲上述臨界角度以上地加以規定之時，色變換 -11 - 201042761 濾光片係成爲得到可充分地捕捉電激發光的光之條件，進 而可以高效率進行色變換者。 於圖4，顯示在以往的色變換有機電激發光顯示器之 端部的發光強度之出射角度分布。以複數之箭頭8 0顯示 從電激發光部之端部附近的發光，其中，以粗箭頭90顯 示發光光量最高之角度Θ的光。在來自電激發光部之端部 的射出光之中，朝電激發光部之外側所射出的光係並非射 入至色變換濾光片而射入至黑矩陣，加以光吸收而成爲損 耗。 如此之斜方向的發光係非色變換方式之情況，爲未貢 獻於顯示器正面方向的亮度之不要的發光，但對於色變換 方式之情況，由斜發光亦射入至色變換濾光片而進行螢光 變換者，應可作爲貢獻於顯示器的亮度之有效的光而利用 。但在圖4之色變換顯示器中，無法射入至色變換濾光片 的發光爲多之故，失去其部分之發光能量，進而成爲作爲 合計之色變換顯示器的效率下降者。 因此’在本發明之中，電激發光部之射出光的主要部 分乃由呈射入至色變換濾光片而激發色變換濾光片地決定 電激發光部與色變換濾光片之位置，防止顯示器之效率降 低。 (實施形態） 以下，對於本發明之適用法及效果，使用具體的例加 以說明’但實施例並不限定本發明之適用範圍者。 -12- 201042761 於圖1，顯示有關本發明之一實施形 ' 電激發光顯示器之剖面槪略圖。於玻璃基 彩色濾光片20及黑矩陣30，於其上方， 片40。另外，於另外之玻璃基板70上， 電壓之時而發光之發光層，配置於至少一 過性之一對的電極間之有機電激發光部60 中，透明之電極係配置於上側。此等2個 Q 材5 0而加以貼合。 於圖3，顯示在有關本發明之實施例 激發光顯示器之端部的發光強度之出射角 從有機電激發光部60之開口的端部所射 發光乃呈遍佈於〇$Φ$360°之全域而射. 片40地，決定有機電激發光部60與色變 開口面積比及位置關係。因此，有機電激 口係較色變換濾光片40之開口爲窄。在 〇 光部60之開口係指：在各發光畫素，取 範圔，通常係在各畫素形成有發光層之範 換濾光片4 〇之開口係指：在色變換濾光 出發光至外部之範圍，通常係由黑矩陣所ί (各部之構成） 1、色變換濾光片 - 1)有機螢光色素 在本發明中’作爲使用於色變換濾光 態的色變換有機 板10上，形成 形成色變換濾光 形成將經由施加 方具有可視光透 。在圖1之構成 基板乃藉由塡充 的色變換有機電 度分布。如此， 出之最高強度之 入至色變換濾光 換濾光片4 0之 發光部60之開 此，有機電激發 出發光至外部之 圍。另外，色變 片之各畫素，取 見定之範圍。 片之螢光色素， -13- 201042761 係如爲吸收從發光體發射之近紫外範圍乃至可視範圍的光 ，特別是藍色乃至藍綠色範圍的光而發射不同之可視光者 即可。作爲可適用之材料係爲螢光色素，其中，可使用 Alq3 (三8-羥基喹啉鋁複合體）等之鋁螯合物系色素、3-(2-苯并噻唑）-7-二乙基氨基香豆素（香豆素6)、3-(2-苯并 咪唑）-7-二乙基氨基香豆素（香豆素7)、香豆素135等之香 豆素系色素、如溶劑黃43、溶劑黃44之萘二甲醯亞胺系 色素之低分子系之有機螢光色素，或由聚苯烯、聚次芳基 、聚芴所代表之高分子螢光材料。 另外，因應必要而亦可複數混合此等色素而使用。對 於作爲圖案化方法而使用噴墨法時，可溶解於溶劑而使用 。作爲可使用之溶劑，如可溶解螢光材料即可，因經由使 用螢光材料而有所差異之故，未標記所有，但例如可使用 甲苹等之非極性有機溶劑，三氯甲烷、醇、酮系等之極性 有機溶劑。將黏度或蒸氣壓，溶解性調整作爲目的，亦可 混合複數之溶劑而使用。 2)矩陣樹脂 另外，對於作爲圖案化方法而利用光微影法之情況， 係於矩陣中分散色素而加以利用。作爲矩陣係將光硬化性 或光熱倂用型硬化性樹脂，進行光及/或熱處理，使自由 基種或離子種產生加以聚合或交聯，成爲不溶不融化之構 成。另外，該光硬化性或光熱倂用型硬化性樹脂係爲了進 行螢光色變換膜之圖案化，在進行硬化前係對於有機溶劑 -14- 201042761 或鹼性溶液爲可溶性者爲佳。 2、 黑矩陣 使用良好吸收可視光，未對於電激發光部及色變換濾 光片帶來不良影響之構成。爲此，經由黑色的無機膜，將 黑色顏料或黑色染料分散於樹脂的層而形成者爲佳。在此 ，作爲黑色的無機膜係例如：可舉出鉻膜（氧化鉻/鉻層 0 積）等。另外，作爲將黑色顏料或黑色染料分散於樹脂的 層，例如：可舉出將碳黑、酞花青、喹吖酮等之顏料或染 料分散於聚醯亞胺等之樹脂的構成，彩色光阻等。此等遮 光層係可經由濺鍍、CVD、真空蒸鍍等之乾處理、旋塗法 等之濕處理而形成，亦可經由光微影法等而進行圖案化。 光反射率係比較於鉻膜（數十％ )，顏料分散樹脂膜（ 1 0%以下）爲低，雖爲理想，但在無機膜中，根據材料而 具有電性傳導性，具有可合倂具有作爲透明電極之補助電 〇 極的機能之優點。 3、 電激發光部 如爲可產生由色變換濾光片吸收之波長的發光，且胃 對於色變換濾光片之特性帶來不良影響而形成之構成即g ，可適用公知之有機發光元件。 . (實施例） (色變換濾光片基板之製作） -15- 201042761 於玻璃基板 I0(50mmx50mmx厚度 〇.7mm;日本 Corning公司製1737玻璃）上，使用黑矩陣30(CK-7001 :曰本富士軟片製）、紅色彩色濾光片（CR-7001 :日本富 士軟片製）、綠色彩色濾光片（CG_7〇〇1:日本富士軟片製） 、藍色彩色濾光片（CB-700 1 :日本富士軟片製），由光微 影法而形成彩色濾光片20。各層的膜厚係各爲Ιμιη (唯綠 色濾光片爲2μη〇 。製作成之彩色濾光片20之副畫素尺 寸爲 300μηιχ100μηι° §周整甲苯1000重量部’第1色素.香丑素6+第2色 素：DCM50重量部（莫耳比係香豆素6: DCM=48: 2) 之油墨，使用噴墨裝置（日本Litrex公司製Litrex 120L )，在氮環境中，做成500nm之紅色變換濾光片。油墨的 乾燥係不破壞氮環境，使用真空乾燥爐，以真空度l.Ox l〇_3Pa，溫度 100°C 進行。 (發光部基板之製作） 使用另外之玻璃基板70 ( 50mmx50mmx厚度〇.7mm; 曰本Corning公司製1 73 7玻璃），於玻璃基板70上，形 成有機電激發光部60。首先，最初使用DC磁控管濺鍍法 (成膜條件：標？E商品名APC-TR，（股）Furuya金屬製Ag 合金；放電氣體 Ar;放電壓力 0.5Pa;放電電力 〇.58W/cm2)，形成l〇〇nm第1電極之下部電極材料（Ag 合金）。接著’將光阻劑（商品名：TFR-1 15〇，日本東京 應化工業製），旋塗於銀合金膜上，在保持爲8 0 °C之潔淨 -16- 201042761 烘箱中’進行30分鐘預烘之後，使用電極圖案形狀之光 罩’進行經由高壓水銀燈之曝光、經由顯像液（NMD - 3 、曰本東京應化工業製）之顯像。之後，在保持爲90t之 潔淨烘箱中，進行3 0分鐘後加熱，形成具有電極圖案形 狀之光阻圖案。將其樣品，在保持爲22t之蝕刻液（製品 名：SEA2，日本關東化學股份有限公司製）中，進行20 秒搖動，蝕刻不需要的銀合金膜，由剝離液（製品名：剝 0 離液1 04、日本東京應化工業製），剝離光阻膜，歷經純 水洗淨’經由旋轉乾燥之乾燥，形成反射層。 使用DC磁控管濺鍍法（成膜條件：標靶in2〇3_ 10%ZnO;放電氣體 Ar;放電壓力0.3Pa;放電電力 ' 〇.5W/cm2 )，形成膜厚220nm之IZO膜。此時之成膜速 度爲0 · 3 3 nm/s。接著，實施經由光微影法之圖案化、乾燥 處理（l5〇°C )及UV處理（水銀燈，室溫及150°C )，形 成下部透明電極’合上第1電極與下部透明電極而做成下 Q 部電極。 將形成前述下部電極之基板，導入至電阻加熱真空蒸 鍍裝置內，將電子植入層，電子輸送層，發光層，電洞輸 送層’電洞植入層，未破壞真空而依序進行成膜，形成有 機電激發光層。在成膜時，將真空槽內壓，減壓至lxl (T4Pa 。然而，有機電激發光層之成膜係藉由金屬遮蔽光罩而進 行，成膜於玻璃基板7〇中央部之24mmx24mm之範圍。 . 遮蔽光罩之開口係在各畫素爲27〇χ60μηι。有機材料係經 • 由將放入至金屬坩鍋中的試料，進行藉由鎢線之電阻加熱 -17- 201042761 之時而加以製膜。鋰係經由Li鹼分注器（saes getters製 )而蒸鍍。控制係經由日本真空製CRTM-8 000而進行。 電子植入層係於羥基喹啉鋁複合體（Alq3 ) ’將金屬鋰’ 以20:1 (膜厚比）進行共蒸鍍而形成l〇nm。電子輸送層 係形成l〇nm羥基喹啉銘複合體（Alq3 )。發光層係形成 30nm 4,4’-雙（2,2，-二苯乙烯基）聯苯（DPVBi)。電洞輸送層 係形成2〇nm 4,4’-雙[N- ( 1-萘基）-N-苯胺基]-聯氨（α-NPD)。電洞植入層係形成70nm銅酞花青（CuPc )。 使製膜有機電激發光層之層積體，未破壞真空而移動 至對向濺鍍裝置。配置金屬光罩，堆積膜厚10〇nm之IZO ，形成上部透明電極。由如此作爲，得到由下部電極、有 機電激發光層、上部電極所構成之有機電激發光部60。 於在前述所成膜之基板，經由CVD法而製膜3000nm 的SiN，形成保護層。 (貼合） 於形成之色變換濾光片基板上，滴下熱硬化性環氧樹 脂’更且將放入有1 5 μιη之墊片的紫外線硬化性環氧樹脂 ，呈由分注器圍繞周圍地進行塗布。接著，將發光部基板 ，由校準機構進行位置調整之同時，使其下降壓著，貼合 2個之基板。此日寸’經由墊片，間隔係成爲1 5 μ m。另外， 色變換濾光片4〇之開口係成爲300μίηχ100μηι、發光部的 開口係成爲27〇χ60μηι。此時，連結從色變換濾光片4〇之 端部至發光部之端部爲止之角度乃53度。 -18- 201042761 然而’將在本實施例所使用之電激發光裝置之發光角 度依存性’在具有與使用於貼合之樹脂同等折射率之油脂 中’進行測定時，成爲發光強度之峰値的角度乃4 8度。 (比較例） 於圖2 ’爲了與本發明作比較，而顯示以往的色變換 有機電激發光顯示器之剖面槪略圖。此比較例係由與本發 Q 明相同形成方法加以製作’只變更在有機電激發光部之形 成時所使用之光罩的圖案。因此，有機電激發光部之開口 乃除成爲300μιηχ10〇μιη以外，係與本發明之實施例相同 。在此比較例中’連結從色變換濾光片之端部至有機電激 ' 發光部之端部爲止之角度乃零度。也就是，有機電激發光 部之開口與色變換濾光片之開口的尺寸爲相同，且於有機 電激發光部之開口的正上方，位置有色變換濾光片之開口 〇 (評估） 將本發明之實施例與比較例，以相同電流値進行通電 ，測定亮度時，成爲如以下。 [表1] 實施例 比較例 亮度（cd/m2) 15 1.2 127.4 如此，本發明之實施例係從色變換的損耗爲少之情況 ，可得到較以往高的效率。 -19· 201042761 【圖式簡單說明】 圖1乃有關本發明之實施例的色變換有機電激發光顯 不器之剖面槪略圖。 圖2乃以往的色變換有機電激發光顯示器之剖面槪略 圖。 圖3乃顯示在有關本發明之實施例的色變換有機電激 發光顯示器之端部的發光強度之出射角度分布圖。 圖4乃顯示在以往的色變換有機電激發光顯示器之端 部的發光強度之出射角度分布圖。 圖5乃說明極座標的圖。 圖6乃顯示繪製發光乃未經由角度而亮度一定之情況 的有機電激發光兀件的發光強度之出射角度分布的圖表。 圖7乃顯示有機電激發光元件之媒體中（n = 1.5)發 光強度之出射角度分布的圖。 【主要元件符號說明】 1 〇 :玻璃基板 20 :彩色濾光片 3 〇 :黑矩陣 40 :色變換濾光片 5 〇 :塡充劑 60 :有機電激發光部 70 :玻璃基板 -20- 201042761 80:來自電激發光的發光 90:來自電激發光的發光之中，強度最高之發光/ = ^ cos 0 sin θάθάφ =^ άφ^LcosOsinOde π =2/dL ^ cos Θ sin θάθ (3) = 2πί^-Β\η2θάθ * 2 x =πί ^ sin 2θάθ In the last formula, the integral function system sin20 Therefore, the distribution of the amount of illuminating light is considered to be proportional to sin20 as a function of the angle Θ. Fig. 6 shows an emission angle distribution of the luminous intensity of the organic electroluminescence element which is a case where the luminance is constant without passing through the angle. It becomes a sinusoidal curve having a maximum 値 of 45 degrees from the exit angle of the electroluminescence element. The graph is incident on the color conversion filter and contributes to the excitation light of the excitation of the fluorescent light. When it is 90 degrees vertically, it becomes zero, and the angle in the middle becomes maximum. In the light-emitting surface, the light system of the electro-excitation light that appears on the front side of the vertical surface is an important factor for determining the brightness when viewed in the normal eye or the like. However, the excitation of the color conversion filter can be ignored. The extent of it becomes smaller. This is the range of the light whose exit angle is zero. Although it is only a positive one, it is not a zero degree. Even in the case of the same flaw, the track of change is also the range of illumination. In the case, the amount of light is relatively small. Further, in the case where the original light emission distribution of -10-201042761 is L a m b e r t i a η, that is, the light emitted through the electroluminescence element, the brightness is constant without passing through the angle, and the angle of maximum contribution is 45°. The exit angle distribution of the electric excitation light intensity is, for example, an optical analog software using a film, and can also be predicted or measured. The organic electroluminescence element can be immersed in a liquid having the same refractive index as that of the medium from the photoconductive element light guide to the color conversion filter, and the angle dependence of the luminescence can be measured to obtain Q. Fig. 7 shows an example of an exit angle distribution of the light-emission intensity (n = 1.5) in the medium of the thus obtained organic electroluminescent device. These complexes measure the film composition of the yttrium-changing electroluminescent device, but it is known that the position where the luminescence intensity is the largest occurs mainly in the range of 30° to 60°. The light emitted from the end portion of the electroluminescence element at the maximum emission angle 0max can be incident on the condition of the color conversion filter, and the amount of incident light to the color conversion filter is 〇S Θ S The range is obtained by integrating the outgoing light distribution of the electroluminescent element. The change in 〇 of the incident luminescence amount is represented by a function of differentiating the amount of incident light as a function of θ, and is an integral function used when deriving the amount of incident light, that is, an outgoing light distribution thereof. By. That is, the change in the amount of incident light to the color conversion filter is most sharply generated at the maximum angle of the outgoing light distribution of the electroluminescence element. That is, in the case where the amount of incident light of the color conversion filter is a function of Θ, the critical 値 of Θ is the angle at which the emission angle of the illuminating intensity of the electroluminescent element is the largest. Then, when the positional relationship between the color conversion filter and the organic electroluminescence portion is set to be equal to or higher than the critical angle, the color conversion -11 - 201042761 filter is sufficiently captured. The condition of the light that excites the light, and the color change can be performed with high efficiency. Fig. 4 shows an emission angle distribution of the luminous intensity at the end portion of the conventional color conversion organic electroluminescence display. The light emitted from the vicinity of the end portion of the electroluminescence portion is indicated by a plurality of arrows 80, wherein the light of the angle Θ at the highest amount of the illuminating light is displayed by the thick arrow 90. Among the light emitted from the end portion of the electroluminescence portion, the light emitted to the outside of the electroluminescence portion is not incident on the color conversion filter but is incident on the black matrix, and absorbs light to cause loss. In the case of the non-color conversion method in the oblique direction, the luminance is not contributed to the luminance in the front direction of the display. However, in the case of the color conversion method, oblique illumination is also incident on the color conversion filter. The fluorescent converter should be used as an effective light that contributes to the brightness of the display. However, in the color conversion display of Fig. 4, the amount of light that cannot be incident on the color conversion filter is large, and the portion of the luminescence energy is lost, and the efficiency of the color conversion display as a total is lowered. Therefore, in the present invention, the main portion of the light emitted from the electroluminescence portion is determined by injecting into the color conversion filter and exciting the color conversion filter to determine the position of the electroluminescence portion and the color conversion filter. To prevent the efficiency of the display from decreasing. (Embodiment) Hereinafter, the application and effects of the present invention will be described with reference to specific examples. However, the examples do not limit the scope of application of the present invention. -12- 201042761 In Fig. 1, a cross-sectional schematic view of an electroluminescent display of one embodiment of the present invention is shown. The glass-based color filter 20 and the black matrix 30 are above the sheet 40. Further, on the other glass substrate 70, the light-emitting layer which emits light at the time of voltage is disposed in the organic electroluminescence portion 60 between the electrodes of at least one of the pairs, and the transparent electrode is disposed on the upper side. These two Q materials are 50 and are attached. In Fig. 3, it is shown that the exit angle of the luminous intensity at the end portion of the excitation light display according to the embodiment of the present invention is emitted from the end of the opening of the organic electroluminescence portion 60 to be spread over 全$Φ$360°. On the other hand, the film 40 is used to determine the area ratio and positional relationship between the organic electroluminescence portion 60 and the color change opening area. Therefore, the opening of the organic electro-optic light-changing filter 40 is narrow. The opening in the illuminating unit 60 means that in each illuminating pixel, the 圔 圔 圔 圔 圔 圔 圔 圔 圔 圔 圔 圔 圔 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范 范The range to the outside is usually composed of a black matrix (constitution of each part) 1. Color conversion filter - 1) Organic fluorescent pigment In the present invention 'as a color conversion organic plate 10 used for a color conversion filter state The formation of the color-changing filter is formed to have visible light transmission through the application side. In the substrate of Fig. 1, the organic light distribution is converted by the color of the charge. Thus, the highest intensity is applied to the light-emitting portion 60 of the color conversion filter for the color filter 40, and the organic light is excited to emit light to the outside. In addition, the various pixels of the color change film are taken to a certain extent. Fluorescent pigments, -13- 201042761 can be used to absorb light from the near-ultraviolet range or the visible range emitted by the illuminant, especially in the blue or even blue-green range, and emit different visible light. The applicable material is a fluorescent pigment, and an aluminum chelate dye such as Alq3 (tris-8-hydroxyquinoline aluminum complex) or 3-(2-benzothiazole)-7-diethyl can be used. a coumarin pigment such as hydroxycoumarin (coumarin 6), 3-(2-benzimidazole)-7-diethylaminocoumarin (coumarin 7), coumarin 135, etc. For example, Solvent Yellow 43, Solvent Yellow 44, a low molecular weight organic fluorescent dye of naphthyl imine pigment, or a polymer fluorescent material represented by polyphenylene, polyarylene, or polyfluorene. Further, if necessary, these pigments may be mixed and used in combination. When the inkjet method is used as the patterning method, it can be used by being dissolved in a solvent. As a solvent which can be used, for example, a fluorescent material can be dissolved, and since it is different by using a fluorescent material, it is not labeled, but for example, a non-polar organic solvent such as acesulfame, chloroform or alcohol can be used. A polar organic solvent such as a ketone system. For the purpose of adjusting the viscosity, vapor pressure, and solubility, a plurality of solvents may be mixed and used. 2) Matrix resin In addition, in the case of using the photolithography method as a patterning method, a dye is dispersed in a matrix and used. The photocurable or photothermal curing resin is subjected to light and/or heat treatment as a matrix to cause polymerization or crosslinking of a free radical or ion species to form an insoluble and non-melting composition. Further, in order to carry out the patterning of the fluorescent color conversion film, the photocurable or photothermal curing resin is preferably one which is soluble in the organic solvent -14 - 201042761 or the alkaline solution before curing. 2. The black matrix uses a structure that absorbs visible light well and does not adversely affect the electroluminescence portion and the color conversion filter. For this reason, it is preferable to form a black pigment or a black dye by dispersing a black pigment or a black dye in a layer of a resin. Here, examples of the black inorganic film include a chromium film (chromium oxide/chromium layer) and the like. In addition, as a layer in which a black pigment or a black dye is dispersed in a resin, for example, a pigment or a dye such as carbon black, phthalocyanine or quinophthalone is dispersed in a resin such as polyimine, and colored light is used. Blocking. These light-shielding layers can be formed by wet processing such as sputtering, CVD, vacuum deposition, or the like, or a wet coating method such as spin coating, or can be patterned by photolithography or the like. The light reflectance is lower than that of the chromium film (tens of %), and the pigment-dispersed resin film (10% or less) is low. Although it is ideal, it has electrical conductivity depending on the material in the inorganic film, and is compatible. It has the advantage of functioning as a protective electrode for a transparent electrode. 3. The electroluminescence portion is a configuration in which the luminescence at a wavelength which can be absorbed by the color conversion filter is generated, and the stomach is adversely affected by the characteristics of the color conversion filter, that is, a known organic light-emitting device can be applied. . (Example) (Production of color conversion filter substrate) -15- 201042761 On a glass substrate I0 (50 mm x 50 mm x thickness 〇. 7 mm; 1737 glass manufactured by Corning, Japan), a black matrix 30 (CK-7001: 曰本) was used. Fujifilm system), red color filter (CR-7001: Fujifilm Japan), green color filter (CG_7〇〇1: Fujifilm Japan), blue color filter (CB-700 1 : In the Japanese Fuji film system, the color filter 20 is formed by the photolithography method. The film thickness of each layer is Ιμιη (only the green filter is 2μη〇. The size of the sub-pixel of the color filter 20 is 300μηιχ100μηι° § week toluene 1000 parts by weight] the first pigment. +Second coloring matter: An ink of a weight part of DCM 50 (Morbi coumarin 6: DCM=48: 2) was made into a red color of 500 nm in an atmosphere of nitrogen using an inkjet apparatus (Litrex 120L manufactured by Litrex, Japan). The filter is changed. The drying of the ink does not destroy the nitrogen atmosphere, and the vacuum drying oven is used, and the vacuum degree is 1.0×x l〇_3 Pa, and the temperature is 100° C. (Production of the light-emitting portion substrate) Using another glass substrate 70 ( 50 mm x 50 mm x thickness 〇. 7 mm; 73 Cor Corning Co., Ltd. 1 73 7 glass), on the glass substrate 70, an organic electroluminescence portion 60 is formed. First, DC magnetron sputtering is initially used (film formation conditions: standard E The product name APC-TR, (share) Furuya metal Ag alloy; discharge gas Ar; discharge pressure 0.5 Pa; discharge power 〇. 58 W / cm 2), formed l〇〇nm first electrode lower electrode material (Ag alloy). Then 'the photoresist (trade name: TFR-1 15〇, Tokyo, Japan Industrially produced), spin-coated on a silver alloy film, and subjected to pre-bake for 30 minutes in a clean -16-201042761 oven maintained at 80 ° C, and then exposed through a high-pressure mercury lamp using an electrode pattern-shaped photomask The image was developed by a developing solution (NMD-3, manufactured by Tokyo Chemical Industry Co., Ltd.), and then heated in a clean oven maintained at 90 t for 30 minutes to form a photoresist pattern having an electrode pattern shape. The sample was shaken for 20 seconds in an etching solution (product name: SEA2, manufactured by Kanto Chemical Co., Ltd., Japan) maintained at 22 t, and an unnecessary silver alloy film was etched, and the peeling liquid (product name: stripping 0 liquid) 1 04, Tokyo, Japan Chemical Industry Co., Ltd.), peeling off the photoresist film, washed with pure water 'drying through spin drying to form a reflective layer. Using DC magnetron sputtering method (film formation conditions: target in2〇3_ 10% ZnO; discharge gas Ar; discharge pressure 0.3 Pa; discharge power '〇. 5 W/cm 2 ), forming an IZO film having a film thickness of 220 nm. The film formation rate at this time was 0 · 3 3 nm / s. Patterning and drying of photolithography (l5〇 °C) and UV treatment (mercury lamp, room temperature and 150 ° C), forming a lower transparent electrode 'closes the first electrode and the lower transparent electrode to form a lower Q electrode. The substrate forming the lower electrode is introduced into the resistor In the heating vacuum evaporation apparatus, the electron implantation layer, the electron transport layer, the light-emitting layer, and the hole transport layer 'hole-implanted layer are sequentially formed into a film without breaking the vacuum to form an organic electroluminescence layer. At the time of film formation, the inside of the vacuum chamber was pressed to a pressure of lxl (T4Pa. However, the film formation of the organic electroluminescence layer was performed by a metal mask, and the film was formed at a central portion of the glass substrate 7 of 24 mm x 24 mm. The opening of the mask is 27 〇χ 60 μηι in each pixel. The organic material is subjected to the resistance heating by the tungsten wire from the sample to be placed in the metal crucible -17- 201042761 Lithium was deposited by a Li-base dispenser (manufactured by Saes Getters). The control was carried out by CRTM-8 000 manufactured by Nippon Vacuum. The electron-implanted layer was bonded to hydroxyquinoline aluminum complex (Alq3)' Metal lithium 'co-evaporation at 20:1 (film thickness ratio) to form l〇nm. The electron transport layer forms a 10 nm hydroxyquinoline complex (Alq3). The light-emitting layer forms 30 nm 4,4' - bis(2,2,-distyryl)biphenyl (DPVBi). The hole transport layer forms 2〇nm 4,4'-bis[N-(1-naphthyl)-N-anilino]- Hydrazine (α-NPD). The hole-embedded layer forms 70nm copper phthalocyanine (CuPc). The laminated body of the organic electro-optic excitation layer is formed, and the vacuum is moved to the opposite layer. A metal photomask was placed on the sputtering apparatus, and IZO having a film thickness of 10 Å was deposited to form an upper transparent electrode. Thus, an organic electroluminescence portion 60 composed of a lower electrode, an organic electroluminescence layer, and an upper electrode was obtained. On the substrate formed as described above, 3,000 nm of SiN was formed by a CVD method to form a protective layer. (Lamination) On the formed color conversion filter substrate, a thermosetting epoxy resin was dropped. An ultraviolet curable epoxy resin having a gasket of 15 μm is placed in a coating around the periphery of the dispenser. Then, the substrate of the light-emitting portion is adjusted by the calibration mechanism while being lowered. The two substrates are bonded to each other. The gap is 1 5 μm via the spacer, and the opening of the color conversion filter 4 is 300 μίη 100 μm, and the opening of the light-emitting portion is 27〇χ60 μm. The angle from the end of the color conversion filter 4A to the end of the light-emitting portion is 53 degrees. -18- 201042761 However, the dependence of the illumination angle of the electroluminescent device used in the present embodiment ' When the measurement is carried out in the oil and fat having the same refractive index as that of the resin to be bonded, the angle of the peak of the luminous intensity is 48 degrees. (Comparative Example) FIG. 2 shows a comparison with the present invention. A cross-sectional view of a color-converted organic electroluminescence display. This comparative example is produced by the same method as the method of the present invention, and the pattern of the photomask used in the formation of the organic electroluminescence portion is changed. The opening of the organic electroluminescence portion is the same as the embodiment of the present invention except that it is 300 μm χ 10 〇 μιη. In this comparative example, the angle from the end of the color conversion filter to the end of the organic electroluminescence portion is zero. That is, the opening of the organic electroluminescence portion is the same as the opening of the color conversion filter, and the opening of the positional color conversion filter (evaluation) is present directly above the opening of the organic electroluminescence portion. In the examples and comparative examples of the invention, when the current is applied in the same current , and the luminance is measured, the following is performed. [Table 1] EXAMPLES Comparative Example Brightness (cd/m2) 15 1.2 127.4 Thus, in the embodiment of the present invention, the loss from the color conversion is small, and the efficiency higher than the conventional one can be obtained. -19· 201042761 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a color conversion organic electroluminescence display device according to an embodiment of the present invention. Fig. 2 is a schematic cross-sectional view showing a conventional color conversion organic electroluminescence display. Fig. 3 is a view showing an exit angle distribution of the luminous intensity at the end of the color conversion organic electroluminescence display of the embodiment of the present invention. Fig. 4 is a view showing an emission angle distribution of the luminous intensity at the end portion of the conventional color conversion organic electroluminescence display. Figure 5 is a diagram illustrating polar coordinates. Fig. 6 is a graph showing the distribution of the emission angle of the luminous intensity of the organic electroluminescence element when the luminance is constant without being angled. Fig. 7 is a graph showing the distribution of the exit angle of the light intensity (n = 1.5) in the medium of the organic electroluminescent device. [Explanation of main component symbols] 1 〇: Glass substrate 20: Color filter 3 〇: Black matrix 40: Color conversion filter 5 〇: 塡 Filler 60: Organic electroluminescence part 70: Glass substrate-20- 201042761 80: Luminescence from electroluminescence: 90: the highest intensity of illumination from electroluminescence
-21 --twenty one -