200535516 玖、發明說明： 【發明所廣技術領域】 發明領域 本發明係有關於一種使用所謂有機£1^照明裝置作為液 5日日日日胞之月光之液晶顯不裝置及其製造方法。 L先前2 發明背景 液晶顯示装置係使用於螢幕或筆記型電腦、手機、電 視等，並作為平面顯示器之代表而普及。由於液晶晶胞本 ίο身係不發光之非發光型元件，因此通常需要可由該液晶晶 胞背面照射之稱作背光之光源。一般，最常用來作為背光 的有由螢光官與以螢光管照射之光作為表面光源之導光體 所構成之導光體方式者。然而，由於該導光體方式需要可 得到均一之表面發光之程度之厚度（大約是液晶晶胞之3 15倍），因此，不易使液晶顯示裝置整體之厚度薄化。 因此，近年來，盛行嘗試使用表面發光元件光源作為 背光。特別是表面發光元件使用有機EL元件所構成之有機 EL照明裝置，因為可非常薄，因此具有作為液晶顯示裝置 之背光之實力。 2〇 帛9圖係顯示習知有機EL照明裝置之-構成例之概略 截面圖。 該有機EL照明裂置，係於由玻璃等構成之透明基板ι〇ι 上形成由ιτο等透明電極構成之陽極1〇2，再於其上依序積 層含有有機發光體之有機EL層、與由u、Mg、八丨等功函數 200535516 小之金屬構成之陰極104,且，為了阻隔水分或氧等外七 使用黏著劑106使由玻璃等構成之密封板1〇5於乾燥， 境下黏著並密封透明基板101。使用如前述之有機虱環 置作為液晶顯不t置之兔光時，背光可薄化，、 所 且液晶顯子 裝置全體之厚度亦可薄化。 ^ 然而，近年來，液晶顯示裝置更大面積化之需求高張 背光之有機EL照明裝置亦必須大面積化。然而，隨著有機 EL照明裝置之大面積化，不能漠視電極阻抗之影響。特2 是使用於陽極之透明電極之IT0等非金屬材料^電阻^ 10低，因此，電壓降低之影響大，會有有機EL照明裝置形成 發光不均或透明電極中之發熱增加之問題產生。 ^ 為了解決前述問題，必需使透明電極之電阻值降低。 因而有專利文獻1所揭示之使用由金屬構成之低電阻之輔 助電極藉此降低透明電極之電阻之技術。然而，因為全屬 15於可見光域具有不透光性，因此，辅助電極部會遮蔽有機 EL照明裝置之發光而使亮度降低。 解決如前述之問題之方法揭示於專利文獻2。該方法係 於液晶顯示裝置之顯示像素電極之形成領域以外之部位， 即不直接影響顯示之部位設置輔助電極。藉該結構，由於 20液晶顯示裝置原本就是在不透光之部位設置輔助電極，因 此，由液晶顯示裝置整體來看，係實質地解決了輔助電極 遮光所造成之亮度降低問題。 然而，即使是於專利文獻2所揭示之結構中，在輔助電 極上之不透光部位中之有機EL層仍有電流流動’會使有機 200535516 EL照明裝置之發光效率降低。又，由於金屬材料之表面平 坦性通常較ITO差，因此，會成為辅助電極與陰極間發生短 路或兩者間產生漏電流之原因。 專利文獻1專利公開公報第2000-268982號 5 專利文獻2專利公開公報第2002-156633號 本發明係#於前述課題作成者，且本發明之目的在於 提供一種提昇有機EL照明裝置之發光效率並實現低消耗電 力，並具有可防止輔助電極與第2電極間產生短路或漏電流 之可#性咼且可完整地均一發光之低消耗電力之有機^^匕照 10明裝置之液晶顯示裝置及其製造方法。 【發明内容3 發明揭示 本發明人於努力檢討後，想到以下所示之發明之各個 態樣。 本發明之液晶顯示裝置，包含有：液晶晶胞，係具有 液曰B層’並形成有多數顯示像素者；照明機構，係配置成 错透明電極之第1電極與金屬電極之第2電極挾持用以由背 後“、、明而述液晶層之有機EL層，且以前述第1電極側與前述 2〇 ’夜晶晶胞對向者；輔助電極，係設置於與前述顯示像素之 /成頊域一致之部位，且與前述第1電極電性連接者；及 、、、巴緣膜，係設置於前述有機EL層之表面中與前述輔助電極 之形成領域一致之部位，且至少使前述有機EL層與前述輔 助電極部分地絕緣者。 其中前述絕緣膜最好於前述第1電極上形成為至少覆 200535516 盍前述辅助電極之上面者。 又’前述絕緣膜亦可於前述第1電極上形成為至少覆蓋 前述輔助電極之表面全體者。 本發明之液晶顯示裝置之製造方法，包含有 :於透明 基板之表面依序形成透明電極之第1電極、電極材料及絕緣 树月曰之步驟；藉微影成像法加工前述絕緣樹脂並形成電極 形狀之絕緣膜之步驟；以前述絕緣膜作為掩模加工前述電 極材料並形成輔助電極圖案之步驟；於前述第1電極上依序 形成有機EL層及金屬電極之第2電極以利用前述絕緣膜覆 10 15 蓋前述輔助電極之步驟；及將具有液晶層且形成有多數顯 示像素之液晶晶胞與前述透明基板之裡面對向配置，使前 述輔助電極位於與前述顯示像素之非形成領域_致之部位 之步驟。 本發明之液晶顯示裝置之製造方法之其他態樣，包含 有··於透明基板之表面依序形成透明電極之第丨電極及電極 材料之步驟；加工前述電極材料並形成辅助電極圖案之步 驟；於前述第1電極上形成絕緣材料以覆蓋前述輔助電極2 步驟，加工前述絕緣材料，並仿照前述輔助電極之开/ °— 成覆盖ό亥輔助電極之絕緣膜圖案之步驟；於命 、則述弟1電極上 依序形成有機EL層及金屬電極之第2電極 膜覆蓋前述輔助電極之步驟；及將具有液晶展 , ^ 數顯示像素之液晶晶胞與前述透明基板之裡 有夕 由對向酉己蒈 使前述輔助電極位於與前述顯示像素之非形成^員_ 夏 部位之步驟。 …〜欵之 20 200535516 5 10 15 本發明之液晶顯示裝置之製造方法之其他態樣，包含 有於透月基板之表面形成輔助電極圖案之步驟·，於前述 透明基板上依序％錢明電極n極及絕緣樹脂以覆 盍刖述輔助電極之步驟；藉由前述透明基板之裡面照射之 成像4卩則述|_助電極為掩模並仿照該輔助電極之 I狀加工別述Μ緣Μ脂’於與前述第i電極上之前述輔助電 極之幵/成$域&之部位形成絕緣膜之步驟；於前述第1電 極上依序形成有機扯層及金騎極之第2電極以覆蓋前述 巴、彖膜之V驟’及將具有液晶層並形成有多數顯示像素之 液晶晶胞與前述透明基板之裡面對向配置，使前述輔助電 極位於與前義顿素之_朗域—狀雜之步驟。 圖式簡單說明 弟1A圖、弟1B圖係顯开·繁1奋―五/处 口 1牙'頌不弟1貝鈀形態之液晶顯示裝置 之構造之概略平面圖。 第1C圖係沿第_之直線η之概略截面圖。 第2圖係顯示第1實施形態之液晶顯示裝置之構成要素 之有機EL照明裝置之構造之概略截面圖。 ’、 第3圖係顯示使用於液晶顯示裝置之背光之有機_ 明裝置之比較例（習知例）之結構之概略截面圖。 第4Α〜第4F圖係依步驟順序顯示第丨實施形態之液晶 顯示裝置之製造方法之概略截面圖。 第5圖係顯示第1實施形態之變形例之液晶顯示裝置之 構成要素之有機EL照明裝置之結構之概略截面圖。 第6Α圖〜第6G圖係依步驟順序顯示第丄實施形態之變 20 200535516 形例之液晶顯示裝置之製造方法之概略截面圖。 弟7圖係顯示第2實施形態之液晶顯示裝置之構成要素 之有機EL照明裝置之結構之概略截面圖。 弟8A圖〜弟8G圖係依步驟順序顯示第2實施形雜之、夜 5晶顯示裝置之製造方法之概略截面圖。 第9圖係顯示習知有機EL照明裝置之一結構例之概略 載面圖。200535516 (1) Description of the invention: [Technical Field of the Invention] Field of the Invention The present invention relates to a liquid crystal display device using a so-called organic £ 1 ^ lighting device as a liquid, and the moonlight of the day and day and its manufacturing method. L2. Background of the Invention Liquid crystal display devices are used in screens, laptops, mobile phones, televisions, etc., and are popular as a representative of flat-panel displays. Since the liquid crystal cell is a non-light-emitting element that does not emit light, a light source called a backlight that can be illuminated by the back of the liquid crystal cell is usually required. In general, the most commonly used backlight is a light guide system composed of a fluorescent light source and a light guide using light emitted from a fluorescent tube as a surface light source. However, since this light guide method requires a thickness (about 3 to 15 times that of a liquid crystal cell) to obtain a uniform surface light emission, it is not easy to reduce the thickness of the entire liquid crystal display device. Therefore, in recent years, an attempt has been made to use a surface light emitting element light source as a backlight. In particular, an organic EL lighting device composed of an organic EL element is used as a surface light-emitting element, and since it can be very thin, it has the ability to be used as a backlight of a liquid crystal display device. 20-9 is a schematic cross-sectional view showing a constitution example of a conventional organic EL lighting device. The organic EL lighting is split, and an anode 102 made of a transparent electrode such as ιτο is formed on a transparent substrate ιOM made of glass, etc., and an organic EL layer containing an organic light-emitting body is sequentially laminated on the organic EL layer, and The cathode 104 is composed of a small work function 200535516, such as u, Mg, VIII, etc., and in order to block moisture or oxygen, etc., an adhesive 106 is used to make the sealing plate 105 made of glass and the like dry and adhere to the environment. And the transparent substrate 101 is sealed. When the organic lice ring device as described above is used as the rabbit light of the liquid crystal display device, the backlight can be thinned, and the thickness of the entire liquid crystal display device can also be reduced. ^ However, in recent years, organic EL lighting devices that require a high-strength backlight for a larger area of a liquid crystal display device must also be large. However, with the increasing area of organic EL lighting devices, the influence of electrode impedance cannot be ignored. Special feature 2 is the non-metallic materials such as IT0 used for the transparent electrode of the anode ^ resistance ^ 10 is low. Therefore, the effect of voltage reduction is large, and there may be problems of organic EL lighting devices forming uneven light emission or increased heat generation in transparent electrodes. ^ In order to solve the aforementioned problem, it is necessary to reduce the resistance value of the transparent electrode. Therefore, there is a technique disclosed in Patent Document 1 that uses a low-resistance auxiliary electrode made of metal to reduce the resistance of the transparent electrode. However, since all of them are opaque in the visible light region, the auxiliary electrode portion shields the light emission of the organic EL lighting device and reduces the brightness. A solution to the aforementioned problems is disclosed in Patent Document 2. The method is to set an auxiliary electrode in a part outside the formation area of the display pixel electrode of the liquid crystal display device, that is, a part that does not directly affect the display. With this structure, since the 20 liquid crystal display device is originally provided with an auxiliary electrode at a place where light is not transmitted, the liquid crystal display device as a whole can substantially solve the problem of brightness reduction caused by the shading of the auxiliary electrode. However, even in the structure disclosed in Patent Document 2, the organic EL layer in the opaque portion on the auxiliary electrode still has a current flowing thereon ', which will reduce the luminous efficiency of the organic 200535516 EL lighting device. In addition, since the surface flatness of metallic materials is generally inferior to that of ITO, it may cause a short circuit between the auxiliary electrode and the cathode or a leakage current between the auxiliary electrode and the cathode. Patent Literature 1 Patent Publication No. 2000-268982 No. 5 Patent Literature 2 Patent Publication No. 2002-156633 The present invention is a contributor to the aforementioned problems, and an object of the present invention is to provide an organic EL lighting device with improved luminous efficiency and A liquid crystal display device with a low-power consumption organic device capable of preventing short-circuit or leakage current between the auxiliary electrode and the second electrode, and having a low power consumption that can be completely and uniformly emitted. Its manufacturing method. [Summary of the Invention 3] The present inventors, after diligently reviewing, have come to think of various aspects of the invention shown below. The liquid crystal display device of the present invention includes: a liquid crystal cell, which has a liquid layer B and is formed with a plurality of display pixels; and a lighting mechanism, which is configured to hold a first electrode of a transparent electrode and a second electrode of a metal electrode. The organic EL layer is used to describe the liquid crystal layer from the back, and the first electrode side and the 20 ′ night crystal unit are opposite to each other; the auxiliary electrode is provided between the display electrode and the display pixel. Those areas that are in the same region and are electrically connected to the first electrode; and ,,, and the edge film are located on the surface of the organic EL layer and that are consistent with the formation area of the auxiliary electrode, and at least the foregoing The organic EL layer is partially insulated from the auxiliary electrode. The insulating film is preferably formed on the first electrode so as to cover at least 200535516 盍 the auxiliary electrode. The insulating film may be formed on the first electrode. It is formed so as to cover at least the entire surface of the auxiliary electrode. The method for manufacturing a liquid crystal display device of the present invention includes a first electrode that sequentially forms transparent electrodes on a surface of a transparent substrate, The steps of the electrode material and the insulating tree; the step of processing the aforementioned insulating resin and forming an electrode-shaped insulating film by lithography; the step of processing the aforementioned electrode material and forming an auxiliary electrode pattern by using the aforementioned insulating film as a mask; A step of sequentially forming an organic EL layer and a second electrode of the metal electrode on the first electrode to cover the auxiliary electrode with the insulating film 10 15; and a liquid crystal cell having a liquid crystal layer and formed with a plurality of display pixels and the transparent The step of arranging the inside of the substrate so as to face the auxiliary electrode in a non-formed area of the display pixel. Other aspects of the manufacturing method of the liquid crystal display device of the present invention include: · on the surface of the transparent substrate Steps of sequentially forming the first electrode and electrode material of a transparent electrode; steps of processing the aforementioned electrode material and forming an auxiliary electrode pattern; forming an insulating material on the aforementioned first electrode to cover the aforementioned auxiliary electrode 2; processing the aforementioned insulating material, and Modeling on the opening of the aforementioned auxiliary electrode / ° —to form an insulating film pattern covering the auxiliary electrode A step of sequentially forming an organic EL layer and a second electrode film of the first electrode on the first electrode and the second electrode to cover the auxiliary electrode; and a liquid crystal cell having a liquid crystal display pixel and a transparent substrate There is a step in which the auxiliary electrode is located at a position that is not a member of the display pixel with the aforementioned display pixel by the opposite side. 欵 ~ 20 20 200535516 5 10 15 Other methods of manufacturing the liquid crystal display device of the present invention Aspects, including the step of forming an auxiliary electrode pattern on the surface of the translucent substrate, a step of sequentially covering the auxiliary electrode on the transparent substrate with an electrode n electrode and an insulating resin in order; by the aforementioned transparent substrate The description of the imaging 4 irradiated inside is described as follows. _ The auxiliary electrode is a mask and is modeled after the auxiliary electrode's I-shape processing. The marginal M lipid is used in conjunction with the auxiliary electrode on the i-th electrode. ; The step of forming an insulating film; on the aforementioned first electrode, an organic layer and a second electrode of the golden riding electrode are sequentially formed to cover the aforementioned V and V films, and there will be a liquid crystal layer and a majority display Pixel Inside the liquid crystal cell and the transparent substrate arranged opposite to the auxiliary electrode is located at the front of the prime Meaning Dayton _ Long Domain - the step-like hybrid. Brief description of the drawings Brother 1A and Brother 1B are schematic plan views of the structure of a liquid crystal display device in the form of a display, a fan, a fan, and a five-point mouth. Figure 1C is a schematic cross-sectional view taken along line _ of line _. Fig. 2 is a schematic cross-sectional view showing the structure of an organic EL lighting device which is a component of the liquid crystal display device of the first embodiment. Figure 3 is a schematic cross-sectional view showing the structure of a comparative example (a conventional example) of an organic light-emitting device used as a backlight of a liquid crystal display device. 4A to 4F are schematic cross-sectional views showing a method of manufacturing the liquid crystal display device according to the first embodiment in the order of steps. Fig. 5 is a schematic cross-sectional view showing the structure of an organic EL lighting device that is a component of a liquid crystal display device according to a modification of the first embodiment. Figures 6A to 6G are schematic cross-sectional views showing a method for manufacturing a liquid crystal display device according to the second embodiment in the order of steps. Figure 7 is a schematic cross-sectional view showing the structure of an organic EL lighting device that is a constituent element of the liquid crystal display device of the second embodiment. FIG. 8A to FIG. 8G are schematic cross-sectional views showing the manufacturing method of the second embodiment of the hybrid display and the night crystal display device in the order of steps. Fig. 9 is a schematic plan view showing a configuration example of a conventional organic EL lighting device.
L實施方式JL EMBODIMENT J
較佳實施例之詳細說明 I 10 以下，針對使用本發明之優良之各實施形態，一面參 照圖示一面詳細地說明。 第1實施形態 (液晶顯示襄置之結構） 第1A圖、第1B圖係顯示本實施形態之液晶顯示裝置之 15結構之概略平面圖，第1C圖係沿第1B圖之直線η之概略截 面圖。又，第2圖係顯示本實施形態之液晶顯示裝置之構成 要素之有機EL照明裝置之構造之概略截面圖。 鲁 本貫施形態之液晶顯示裝置，係如第⑴圖所示般具有 顯示機構之液晶晶胞2、及用以作為液晶晶胞2之背光之有 2〇 機EL照明裝置3。 液晶晶胞2包含有第1透明基板13、第2透明基板16、及 液晶層Π。第1透明基板13係由玻璃等構成，並於表面形成 有由ΙΤ〇等構成之條紋狀之透明電極11，且於透明電極11 上形成有配向膜12者。第2透明基板16係由玻璃等構成，並 10 200535516 於表面形成有與由ITO等構成之透明電極11垂直之多數條 紋狀之透明電極14，且於透明電極14上形成有配向膜15 者。前述液晶層17係由使配向膜12、15對向之第1透明基板 13與第2透明基板16挾持。又，於第1透明基板13之裡面配 5置有偏光板18，並於第2透明基板16之裡面配置有偏光板 19。該液晶晶胞2 ,係如第1Α圖、第1Β圖所示般藉由使透 明電極11與透明電極14垂直，由隔著兩者之液晶層17等重 疊之形成矩陣狀之部分構成多數顯示像素電極（開口部）1〇。 此外，液晶晶胞於本文中係單純以矩陣型記述，然而 10本發明之結構亦可適用於像素部設有薄膜電晶體(tft)等 轉換元件之主動矩陣型之液晶晶胞。 有機EL照明裝置3之結構，係如第2圖所示般於由玻璃 等構成之第3透明基板21之表面形成由IT〇等構成之透明電 極之陽極22，於陽極22上形賴助電極23之圖案，並形成 15 並且於IW極22上依序 絕緣膜24使其覆蓋輔助電極23上面 形成有機EL層25及金屬電極之陰極加覆蓋輔助電極徽 絕緣膜24，於陰極26之上方隔著㈣化料構成之吸濕材 27設置密封板28，再藉不圖示之黏著顧定密封板28。 輔助電極23係設置於顯示像素電極㈣外之領域，換 言之就是與顯示像素電㈣之麵成領域—致之部位， 即’如第1Α®、第1Β_示般於配置成矩形之顯示像素電 料 極10間設置成格子狀，並以紹或銀U等金屬作為材 ^：1 « 絕緣膜24仙氧化料鱗性無機㈣絲醯亞胺等 20 200535516 f光性樹脂材料作為材料，於此係以後者為材料，並以仿 二輔助電極23之雜形成為覆蓋伽電助之上面，又， 藉該絕緣膜24分隔輔助電極23之上面與有機虹層25，且， 辅錢極23與有機_25係以輔助電極23之上側絕緣。 第3圖係顯不用以作為液晶顯示裝置之背光之有機el 照明裝置之比較例（習知例）之結構之概略截面圖。第3圖之 例並非如本實施形態具有絕緣膜24，係直接形成有機虹層 25以覆蓋輔助電極23。 由於有機EL層25係於挾持其之陽極22與陰極％之間施 〇加電壓，因此，第3圖中輔助電極23之上面透過有機el層25 與陰極26之間之導通係有機£1^照明裝置3之發光效率降低 之主要原因。因此，如本實施形態般，於輔助電極23之上 面形成絕緣膜24以使輔助電極23之上面與有機EL層25絕 緣，藉此可提升有機EL照明裝置3之發光效率。 15 且’第3圖之情況下，金屬材料之平坦性不佳會有使輔 助電極23與陰極26之間產生短路或漏電流之虞。本實施形 態於辅助電極23之上面形成絕緣膜24，藉此使輔助電極23 與陰極26之間隔著絕緣膜24確實地絕緣，防止前述短路或 漏電流。 10 有機]£1^層25有由陽極22側起為電洞輸送層/有機發光 層之2層結構、或電洞輸送層/有機發光層/電子輸送層之3 層結構、或電洞注入層/電洞輸送層/有機發光層/電子輸送 層之4層結構等。例如，有使用α_Νρ〇作為電洞輸送層， 且以Alq作為有機發光層之2層結構之有機£1^層。該結構之 12 200535516 元件係得到綠色之發光。又，藉由在有機發光層添加具有 各種發光色之摻雜物，可形成具有各種發光色之有機£1^元 件。 又，藉由在有機發光層添加分別發R、G、B光之摻雜 5物，或積層添加有分別發R、g、b光之摻雜物之有機發光 層，可得到發白色光之有機EL元件。 陰極26為了要有效率地注入電子於有機£匕層25，係以 功函數小之鋰等鹼金屬及氟化鋰等鹼金屬化合物為材料作 成者，然而，由於驗金屬等功函數小之金屬不穩定，因此 10為了要穩定化，要同時使用鋁或銀等穩定金屬。例如，使 用鋁-鋰合金、氟化鋰/鋁2層結構作為陰極26。 密封板28係以玻璃等作為材料，且，為了要使有機£[ 層25與外氣隔絕，係藉例如環氧樹脂系黏著劑於氮氣環境 下與第3透明基板21黏著並密封。 15 且，如第1C圖所示，重疊液晶晶胞2與有機EL照明裝 置3，使液晶晶胞2之偏光板18與有機EL照明裝置]之第3透 明基板21對向’且如第ΙΑ®、第糊所示般於顯示像素電 極10之非形成領域之配置成矩陣狀之顯示像素電極1〇間重 疊格子狀之輔助電極23使其位於位置_致處，而構成液晶 20 顯示製置1。 (液晶顯示裝置之製造方法） 第4Α圖〜第4F圖係依步驟順序顯示前述本實施形態之 液晶顯示裝置之製造方法之概略截面圖。於此，主要係針 對本實施形態之液晶顯示裝置之主要結構之有機此照明裝 13 200535516 置之製造步驟作說明。 首先，如第4A圖所示，於由玻璃等構成之第3透明基板 21上形成由ITO等構成之陽極22，並於陽極22上形成例如鋁 (A1)膜31作為電極材料後，塗布形成感光性樹脂材料之聚醯 5 亞胺32之膜。 接著，如第4B圖所示般藉微影成像法使聚醯亞胺膜32 曝光並顯像’並加工聚驢亞胺膜32形成絕緣膜24之圖案。 接著，如第4C圖所示般以絕緣膜24作為掩模對A1膜31 乾姓刻，藉此形成仿照絕緣膜24之形狀之輔助電極23之圖 1〇案。此時，輔助電極23形成於與液晶晶胞2重疊時位在與顯 示像素電極10之非形成領域一致之部位。 接著，使用氧電衆氧化陽極22之表面。然後，如第4d 圖所示般於陽極22上藉蒸鑛法形成有機虹層25以覆蓋絕緣 膜24及輔助電極23。其中，由陽極22側蒸鑛2tnata作為電 Μ /同/主入層’洛^-NPD作為電洞輸送層，且蒸鍍蝴作為 發光層，形成3層結構之有機虹層25。接著，於有機虹層 2S上再分別蒸鍍LiF厚度〇 5nm，A1厚度2〇〇肺，藉此形成陰 極26 〇 接者，如第4E圖所示，使用黏貼有由氧化爹巴等構成之 2〇吸濕^27之讼封板28，並於乾燥氮氣環境下使用環氧樹脂 系黏著劑黏接第3玻璃基板⑽密封板Μ藉此密封。如前 述，完成本實施形態之用以作為背光之有機EL照明裝置3。 該有機EL照明裝置3係發綠色光。 液晶晶胞2係藉公知之方法製造。例如，於由破璃等構 200535516 成之第1透明基板13表面形成多數由IT0等構成之條紋狀之 透明電極11之圖案後，再形成配向膜12使其覆蓋透明電極 11，且於由玻璃等構成之第2透明基板16表面形成多數與由 ΙΤΟ等構成之透明電極11垂直之條紋狀之透明電極14後，形 5 成配向膜15使其覆蓋透明電極μ。 接著，如第4F圖所示，使第丨及第2透明基板13、“配 置成隔著用以控制注入之液晶之膜厚之分隔物貼合，使透 明電極11與透明電極14垂直並對向，並於其内部注入液晶 來形成液晶17。最後，於第丨及第2透明基板13、16之裡面 10形成偏光板18、19。如圖中之圓C所示，互相垂直之條紋狀 之透明電極11、14所重疊之部分構成顯示像素電極1〇。 接著，將液晶晶胞2與有機EL照明裝置3重疊並固定， 使液晶晶胞2之偏光板18與有機明裝置3之第3透明基 板21對向，且使格子狀之輔助電極23與顯示像素電極⑺之 15非形成領域之配置成矩形之顯示像素電極10間位置一致， 完成液晶顯示裝置1。為了確實進行該重疊步驟，係以於液 晶晶胞2及有機EL照明裝置3之各個適當之部位設有對位標 言总為佳。 如以上之說明，由於本實施形態事先於透明電極之陽 20極22上設有由金屬材料構成之輔助電極23，因此可降低陽 極22之電阻值，可防止電壓降低造成之發光不均或發熱， 而貫現可完整地均一發光之可靠性高之用以作為背光之有 機ELA?'明裳置3。又，由於輔助電極23設置於液晶晶胞2之 顯不像素電極1〇之非形成領域，因此，可防止因輔助電極 15 200535516 23遮光造成有機EL照明裝置3亮度降低之問題。且，由於在 輔助電極23上形成有絕緣膜24，因此，有機EL層25之辅助 電極23遮光之部位沒有電流流動，可實現有機EL照明裝置 之低消耗電力。且，藉由形成絕緣膜，可防止輔助電極 5之平坦性不良所造成之辅助電極23與陰極26之短路或漏電 流之問題。依據前述，可實現具有可靠性高、可完整地均 一發光之低消耗電力之有機EL·照明裝置之液晶顯示裝置。 第1實施形態之變形例 以下，針對第1實施形態之變形例進行說明。該變形例 10中，液晶顯示裝置之有機]£[照明裝置之結構與第1實施形態 有些許不同。此外，將與第丨實施形態之液晶顯示裝置相同 之構成構件等附上同一標號並省略說明。 (液晶顯示裝置之結構） 第5圖係顯示本變形例之液晶顯示裝置之構成要素之 15有機EL照明裝置之結構之概略截面圖。 本變形例之液晶顯示裝置（第6G圖所顯示之液晶顯示 裝置41)包括：液晶晶胞之與幻實施形態相同之液晶晶胞 2，用以作為液晶晶胞2之背光之有機£[照明裝置Μ。 有機EL照明裝置42係於由玻料構成之第3透明基板 2〇 2丨之表面形成封τ〇等構成之透明電極之陽極22，並於陽極 22上形成辅助電極23之圖案，並抑成絕賴43使其覆蓋 輔助電極23之表面全體，且於陽極22上依序形成有機此層 25及金屬電極之陰極％以覆蓋絕緣膜Μ，並於陰極％上方 隔著由氧化纪等構成之吸濕材27設置密封板28，再藉不圖 16 200535516 示之黏著劑固定密封板28而構成。 絕緣膜43係以氧化石夕等絕緣性無機材料或聚酿亞胺等 感光性樹脂材料作為材料，於此係以前者作為材料，並以 仿照輔助電極23m彡成為覆賴助電極23之上面， 5又，藉該絕緣膜24分隔輔助電極23與有機EL層25，使輔助 電極23與有機EL層25絕緣。 如本變形例般形成絕緣膜43使其覆蓋輔助電極23之表 面全體，使辅助電極23與有機EL層25絕緣，藉此可使有機 U放置42之發光效率提昇。且，形成絕緣膜43使其覆 1〇蓋辅助電極23之表面全體，藉此辅助電極23與陰極％之間 由絕緣膜43分隔並確實地絕緣，可防止前述短路或漏電流。 (液晶顯示裝置之製造方法） 第6A圖〜第6G圖係依照步驟順序顯示前述本變形例之 夜曰a ·、、、員示波置之製造方法之概略截面圖。於此，主要係針 15對本麦形例之液晶顯示裝置之主要結構之有機EL照明裝置 之製造步驟作說明。 首先，如第6A圖所示般，由玻璃等構成之第3透明基板 21上形成由ITO等構成之陽極22，並於陽極22上形成例如I呂 (A1)膜31之膜作為電極材料。 2〇 接著，如第6B圖所示般使A1膜31形成電極形狀，並形 成辅助電極23之圖案。此時，輔助電極23形成為於與液晶 晶胞2重疊時位在與顯示像素電極1〇之非形成領域一致之 部位。 接著，如第6C圖所示般，於陽極22上形成絕緣性無機 17 200535516 材料之氧化矽膜44使其覆蓋輔助電極23。 …後’如第6D圖所示般使氧切膜料仿照輔助電極^ 之心狀成形，亚形成覆蓋輔助電極23之表面全體之絕緣膜 43之圖案。 、 5 接著’使用氧電漿氧化陽極22之表面。接著，如第犯 圖所不I又於陽極22上藉蒸鍍法成膜有機队層Μ使其覆蓋絕 緣膜43。其中，由陽極22側蒸錢2tnata作為電洞注入層， 洛鍍α-NPD作為電洞輸送層，且蒸鑛蝴作為發光層，形 幻層結構之有機EL層25。接著，於有機仙層25上再分別 1〇蒸鍍LiF厚度〇.5nm，A1厚度細nm，藉此形成陰極％。 接著’如第6F圖所示般使用貼附有由氧化紀等構成之 吸屬材27之搶封板28，並於乾燥氮氣環境下使用環氧樹脂 系黏著劑黏著第3玻璃基板21與密封板28，藉此進行密封。 如此一來，完成本變形例之用以作為背光之有機EL照明裝 15置42。該有機明裝置42發綠光。 液晶晶胞2係藉公知之方法製造。例如，於由玻璃等構 成之第1透明基板13表面形成多數由IT〇等構成之條紋狀之 透明電極11之圖案後，再形成配向膜12使其覆蓋透明電極 1卜且於由玻璃等構成之第2透明基板16表面形成多數與由 20 ΠΌ等構成之透明電極叫直之條紋狀之透明電賴後，形 成配向膜15使其覆蓋透明電極14。 接著，如第6G圖所示，使第i及第2透明基板13、他 製成隔著用以控制注入之液晶之膜厚之分隔物貼合，使透 明電極11與透明電極14垂直並對向，並於其内部注入液晶 18 200535516 來形成液晶Π。最後，於第i及第2透明基板13、16之裡面 形成偏光板18、19。如圖中之圓c所示，互相垂直之條_ 之透明電極u、14所重4之部分構賴示像素電極10。 5 10 接著，將液晶晶胞2與有機EL照明裝置42重疊並固定， 使液日日日日胞2之偏光板18與有機EL照明裝置42之第3透明基 、皆向且使格子狀之輔助電極23位在與顯示像素電極 10之非形成領域之配置成矩形之顯示像素電極1()間位置— 致處，完成液晶顯示H41。為了確實進行該重疊步驟， 係以於液晶晶胞2及有機肛照明裝置42之各個適當之部位 設有對位標誌為佳。 如以上之說明，由於本實施形態事先於透明電極之陽 極22上叹有由金屬材料構成之輔助電極23，因此可降低陽 極22之電阻值，可防止電壓降低所造成之發光不均或發 …而實現可完整地均-發光之可靠性高之用以作為背光 之有機ELfe明1置42。χ，由於辅助電極23設置於液晶晶 巴之”、員示像素電極1〇之非形成領域，因此，可防止因輔助 電極23遮光造成有機此照明裝置辦度降低之問題。且， 由於形成有絕緣膜43使其覆蓋輔助電極23之表面全體，因 此丄有機EL層25之伽電極23遮光之部位沒有電流流動， Μ Μ現有明裝置之低消耗電力。且，藉由形成絕緣 膜，可防止輔助電極23之平坦性不良所造成之輔助電極23 2陰極26之短路或漏電流問題。依據前述，可實現具有可 靠性高、可完整地均一發光之低消耗電力之有機el照明裝 置之液晶顯示裝置。 19 200535516 弟2貫施形態 以下，針對本發明之第2實施形態進行說明。本實施形 悲中’液晶顯示裝置之有機EL照明裝置之結構與第1實施形 態有些許不同。此外，將與第1實施形態之液晶顯示裝置相 同之構成構件等附上同一標號並省略說明。 (液晶顯示裝置之結構） 第7圖係顯示本實施形態之液晶顯示裝置之構成要素 之有機EL照明裝置之結構之概略截面圖。 本貫鈀形悲之液晶顯示裝置（第8G圖所顯示之液晶顯 示裝置51)包括：與第丨實施形態相同之液晶晶胞2 ;用以作 為液晶晶胞2之背光之有機el照明裝置52。 有機EL照明裝置52係於由玻璃等構成之第3透明基板 21之表面形成輔助電極23之目案，並於第3透明基板^上形 15 成由ITO等構成之透明電極之陽極22使其覆蓋輔助電極 23，並且在與陽極22上之輔助電極23上方-致之部位形成 絕緣膜53，於陽極22上依序形成有紙層25及金屬電極之 陰極26以覆蓋絕緣购，並於陰紐上方隔著由氧化絶等 構成之吸濕材27設置密封板28，再藉不圖示之黏著劑 密封板28而構成。 & 20 、’、巴、，彖膜43係以礼化石夕或正感光性聚驢亞胺等作為材料 而作成JE以仿^輔助電極23之形狀隔著陽極D形成在 :電極23上方之位置—致處，又，藉該絕緣膜43分隔補助 電㈣之上面與有機_25，使輔助細3與嫌 以輔助電極23之上方絕緣。 20 200535516 如本實施例般形成絕緣膜53使其位於輔助電極23上方 之位置一致處來使輔助電極23與有機EL層25絕緣，藉此可 使有機EL照明裝置52之發光效率提昇。且，形成絕緣膜53 使其位於輔助電極23上方之位置一致處，藉此輔助電極23 5 與陰極26之間由絕緣膜53分隔並確實地絕緣，可防止前述 短路或漏電流。 (液晶顯示裝置之製造方法） 第8A圖〜第8G圖係依照步驟順序顯示前述本實施形態 之液晶顯示裝置之製造方法之概略截面圖。於此，主要係 10針對本實施形態之液晶顯示裝置之主要結構之有機el照明 裝置之製造步驟作說明。 首先，如第8A圖所示般，於由玻璃等構成之第3透明基 板21上形成例如鋁⑺^膜^之膜作為電極材料後，使八丨膜31 形成電極形狀，並形成輔助電極23之圖案。此時，輔助電 15極23形成為於與液晶晶胞2重疊時位在與顯示像素電極1〇 之非形成領域一致之部位。 接著’如第8B圖所示般形成由IT〇等構成之陽極22使 其覆蓋輔助電極23。 接著’如第8C圖所示般於陽極22上塗布並形成正感光 2〇性聚酿亞胺膜54後，由透明基板以之裡面照射曝光之光， 辅助電極23作為掩模且藉微影成像法使正感光性聚酿 亞月女膜曝光亚顯像，且，如第犯圖所示般加工正感光性聚 酿亞胺膜54並形成電極形狀之絕緣膜53。Detailed Description of the Preferred Embodiment I 10 Hereinafter, each excellent embodiment using the present invention will be described in detail with reference to the drawings. First Embodiment (Structure of a Liquid Crystal Display) FIGS. 1A and 1B are schematic plan views showing the 15 structure of a liquid crystal display device of this embodiment, and FIG. 1C is a schematic cross-sectional view taken along line η of FIG. 1B. . Fig. 2 is a schematic cross-sectional view showing the structure of an organic EL lighting device that is a component of the liquid crystal display device of this embodiment. The liquid crystal display device in the Lu Benshi form is a liquid crystal cell 2 having a display mechanism as shown in the second figure, and a 20-cell EL lighting device 3 used as a backlight of the liquid crystal cell 2. The liquid crystal cell 2 includes a first transparent substrate 13, a second transparent substrate 16, and a liquid crystal layer Π. The first transparent substrate 13 is made of glass or the like, and a stripe-shaped transparent electrode 11 made of ITO or the like is formed on the surface, and an alignment film 12 is formed on the transparent electrode 11. The second transparent substrate 16 is made of glass or the like, and a plurality of stripe-shaped transparent electrodes 14 perpendicular to the transparent electrode 11 made of ITO or the like are formed on the surface, and an alignment film 15 is formed on the transparent electrode 14. The liquid crystal layer 17 is held by a first transparent substrate 13 and a second transparent substrate 16 which align the alignment films 12, 15 with each other. A polarizing plate 18 is arranged inside the first transparent substrate 13 and a polarizing plate 19 is arranged inside the second transparent substrate 16. The liquid crystal cell 2 is shown in FIG. 1A and FIG. 1B by making the transparent electrode 11 and the transparent electrode 14 perpendicular to each other, and the liquid crystal layer 17 and the like forming a matrix-like portion are arranged to form a majority display. The pixel electrode (opening) is 10. In addition, the liquid crystal cell is simply described in a matrix type in this article. However, the structure of the present invention can also be applied to an active matrix type liquid crystal cell in which a pixel portion is provided with a conversion element such as a thin film transistor (tft). The structure of the organic EL lighting device 3 is such that, as shown in FIG. 2, an anode 22 made of a transparent electrode made of IT0 or the like is formed on the surface of a third transparent substrate 21 made of glass or the like, and an auxiliary electrode is formed on the anode 22. 23 pattern, and form 15 and sequentially insulative film 24 on the IW electrode 22 to cover the auxiliary electrode 23 to form an organic EL layer 25 and a cathode of the metal electrode plus an auxiliary electrode emblem insulating film 24, separated above the cathode 26 A sealing plate 28 is provided on the hygroscopic material 27 composed of a chemical compound, and then a Guding sealing plate 28 is attached by a not-shown adhesive. The auxiliary electrode 23 is provided in a field outside the display pixel electrode, in other words, it is the same area as the surface of the display pixel electrode, that is, the display pixel electrode is arranged in a rectangular shape as shown in 1A® and 1B_. 10 material poles are arranged in a grid shape, and metal such as Shao or silver U is used as the material ^: 1 «Insulating film 24 cents oxide material scale inorganic filament silk imine 20 200535516 f light resin material as the material, here The latter is used as a material, and the upper surface of the auxiliary electrode 23 is formed by covering the upper side of the auxiliary electrode 23 with an imitation of the auxiliary electrode 23, and the upper surface of the auxiliary electrode 23 and the organic rainbow layer 25 are separated by the insulating film 24, and the auxiliary electrode 23 and Organic_25 is insulated on the upper side of the auxiliary electrode 23. Fig. 3 is a schematic cross-sectional view showing the structure of a comparative example (a conventional example) of an organic el lighting device which is not used as a backlight of a liquid crystal display device. The example in FIG. 3 does not have the insulating film 24 as in the present embodiment, and the organic rainbow layer 25 is directly formed to cover the auxiliary electrode 23. Since the organic EL layer 25 is applied with a voltage between the anode 22 and the cathode% that holds it, the auxiliary electrode 23 shown in FIG. 3 is organic through the conduction between the organic el layer 25 and the cathode 26. The main cause of the decrease in the luminous efficiency of the lighting device 3. Therefore, as in this embodiment, the insulating film 24 is formed on the auxiliary electrode 23 so as to isolate the upper surface of the auxiliary electrode 23 from the organic EL layer 25, thereby improving the luminous efficiency of the organic EL lighting device 3. 15 and in the case of FIG. 3, the flatness of the metal material is poor, which may cause a short circuit or a leakage current between the auxiliary electrode 23 and the cathode 26. In this embodiment, an insulating film 24 is formed on the auxiliary electrode 23, so that the auxiliary electrode 23 and the cathode 26 are surely insulated with the insulating film 24 therebetween to prevent the aforementioned short circuit or leakage current. 10 organic] £ 1 ^ layer 25 has a two-layer structure from the anode 22 side as a hole transport layer / organic light-emitting layer, or a three-layer structure of a hole transport layer / organic light-emitting layer / electron transport layer, or hole injection Layer / hole transport layer / organic light-emitting layer / electron transport layer. For example, there are organic layers with a two-layer structure using α_Νρ〇 as a hole transporting layer and Alq as an organic light emitting layer. The 12 200535516 element of this structure gets green luminescence. In addition, by adding dopants having various light emitting colors to the organic light emitting layer, organic elements having various light emitting colors can be formed. In addition, by adding dopants that emit R, G, and B light to the organic light-emitting layer, or stacking organic light-emitting layers that add dopants that emit R, g, and b light, respectively, a white light-emitting layer can be obtained. Organic EL element. In order to efficiently inject electrons into the organic layer 25, the cathode 26 is made of an alkali metal such as lithium having a small work function and an alkali metal compound such as lithium fluoride. Because it is unstable, it is necessary to use a stable metal such as aluminum or silver for stabilization. For example, as the cathode 26, an aluminum-lithium alloy and a lithium fluoride / aluminum two-layer structure are used. The sealing plate 28 is made of glass or the like, and in order to isolate the organic layer 25 from outside air, it is adhered to and sealed with the third transparent substrate 21 by, for example, an epoxy-based adhesive under a nitrogen environment. 15 And, as shown in FIG. 1C, the liquid crystal cell 2 and the organic EL lighting device 3 are superimposed, so that the polarizing plate 18 of the liquid crystal cell 2 and the organic EL lighting device are aligned. ®, as shown in the second paste, in the non-formed area of the display pixel electrode 10, the matrix-shaped display pixel electrodes 10 are arranged in a matrix-like auxiliary electrode 23 so that they are positioned at the same position, so as to constitute a liquid crystal 20 display device. 1. (Manufacturing method of liquid crystal display device) Figures 4A to 4F are schematic sectional views showing the manufacturing method of the liquid crystal display device of the present embodiment in the order of steps. Here, the manufacturing steps of the organic lighting device 13 200535516 which is the main structure of the liquid crystal display device of this embodiment will be mainly described. First, as shown in FIG. 4A, an anode 22 made of ITO or the like is formed on a third transparent substrate 21 made of glass or the like, and an aluminum (A1) film 31 is formed on the anode 22 as an electrode material, for example. Polyimide 5 imine 32 film of photosensitive resin material. Next, as shown in FIG. 4B, the polyimide film 32 is exposed and developed by lithography, and the polyimide film 32 is processed to form a pattern of the insulating film 24. Next, as shown in FIG. 4C, the A1 film 31 is engraved with the insulating film 24 as a mask, thereby forming the pattern of the auxiliary electrode 23 imitating the shape of the insulating film 24. At this time, the auxiliary electrode 23 is formed at a position which coincides with the non-formation area of the display pixel electrode 10 when it overlaps the liquid crystal cell 2. Next, the surface of the anode 22 was oxidized using an oxygen electrode. Then, as shown in FIG. 4d, an organic rainbow layer 25 is formed on the anode 22 by a vaporization method to cover the insulating film 24 and the auxiliary electrode 23. Among them, the anode 22 side steamed ore 2tnata is used as the electro-membrane / main / entry layer 'Luo ^ -NPD as the hole transporting layer, and the vapor-deposited butterfly is used as the light-emitting layer to form a three-layered organic rainbow layer 25. Next, the organic iris layer 2S was vapor-deposited with a thickness of LiF of 0.5 nm and an thickness of A1 of 200 lungs, thereby forming a cathode of 26 ohms. As shown in FIG. 4E, a layer composed of oxidized dba and the like was used. 20 absorbs moisture ^ 27 and seals the plate 28, and the third glass substrate is sealed with an epoxy-based adhesive in a dry nitrogen environment to seal the plate M. As described above, the organic EL lighting device 3 used as a backlight in this embodiment is completed. This organic EL lighting device 3 emits green light. The liquid crystal cell 2 is manufactured by a known method. For example, a pattern of stripe-shaped transparent electrodes 11 made of IT0 or the like is mostly formed on the surface of the first transparent substrate 13 made of broken glass or the like 200535516, and then an alignment film 12 is formed so as to cover the transparent electrodes 11, and the glass is made of glass. After the surface of the second transparent substrate 16 composed of the stripe-shaped transparent electrodes 14 which are mostly perpendicular to the transparent electrode 11 composed of ITO or the like is formed, an alignment film 15 is formed to cover the transparent electrodes μ. Next, as shown in FIG. 4F, the first and second transparent substrates 13 and “are arranged to be bonded together via a separator for controlling the thickness of the injected liquid crystal, so that the transparent electrode 11 and the transparent electrode 14 are perpendicular to each other and Liquid crystals are injected into and into the liquid crystal to form a liquid crystal 17. Finally, polarizing plates 18 and 19 are formed on the inside 10 of the second and second transparent substrates 13, 16. As shown by the circle C in the figure, stripes are perpendicular to each other. The overlapping portions of the transparent electrodes 11 and 14 constitute the display pixel electrode 10. Next, the liquid crystal cell 2 and the organic EL lighting device 3 are overlapped and fixed, so that the polarizing plate 18 of the liquid crystal cell 2 and the organic light emitting device 3 3 The transparent substrate 21 is opposed, and the grid-shaped auxiliary electrode 23 and the display pixel electrode 10 in the non-formed area of the display pixel electrode 15 are aligned in the same position, and the liquid crystal display device 1 is completed. In order to perform this overlapping step surely It is always better to have alignment marks on the appropriate parts of the liquid crystal cell 2 and the organic EL lighting device 3. As explained above, since this embodiment is provided in advance on the positive electrode 20 of the transparent electrode 22 Constructed from metal materials The auxiliary electrode 23 can reduce the resistance value of the anode 22, can prevent uneven light emission or heat generation caused by voltage reduction, and can now completely and uniformly emit light with high reliability. Organic ELA for backlighting? 3. Also, since the auxiliary electrode 23 is disposed in a non-formation area of the display pixel electrode 10 of the liquid crystal cell 2, the problem that the brightness of the organic EL lighting device 3 is reduced due to the shading of the auxiliary electrode 15 200535516 23 can be prevented. Since the insulating film 24 is formed on the auxiliary electrode 23, there is no current flowing in the light-shielded portion of the auxiliary electrode 23 of the organic EL layer 25, and low power consumption of the organic EL lighting device can be realized. Moreover, by forming the insulating film, it is possible to Prevents short circuit or leakage current of auxiliary electrode 23 and cathode 26 caused by poor flatness of auxiliary electrode 5. According to the foregoing, it is possible to realize an organic EL lighting device with high reliability and low power consumption that can emit light uniformly and completely. Liquid crystal display device. Modification of First Embodiment Hereinafter, a modification of the first embodiment will be described. In Modification 10, the liquid crystal display device The organic] £ [The structure of the lighting device is slightly different from that of the first embodiment. In addition, the same components as those of the liquid crystal display device of the first embodiment are given the same reference numerals and the description is omitted. (Structure of the liquid crystal display device) Fig. 5 is a schematic cross-sectional view showing the structure of 15 organic EL lighting devices that are the constituent elements of the liquid crystal display device of this modification. The liquid crystal display device (the liquid crystal display device 41 shown in Fig. 6G) of this modification includes: The liquid crystal cell 2 of the unit cell is the same as that of the magic embodiment, and is used as an organic backlight of the liquid crystal cell 2. [Illuminating device M. The organic EL lighting device 42 is a third transparent substrate 202 made of glass material. The surface of 丨 forms an anode 22 of a transparent electrode composed of τ0 and the like, and forms a pattern of the auxiliary electrode 23 on the anode 22, and suppresses it so that it covers the entire surface of the auxiliary electrode 23, and The organic layer 25 and the cathode% of the metal electrode are formed in order to cover the insulating film M, and a sealing plate 28 is provided above the cathode% with a hygroscopic material 27 composed of oxidized period and the like, and then borrowed from FIG. 16 200535516 The illustrated adhesive is configured by fixing the sealing plate 28. The insulating film 43 is made of an insulating inorganic material such as oxidized stone or a photosensitive resin material such as polyimide. Here, the former is used as the material, and the auxiliary electrode 23 is modeled on the auxiliary electrode 23, 5. The auxiliary electrode 23 and the organic EL layer 25 are separated by the insulating film 24, and the auxiliary electrode 23 and the organic EL layer 25 are insulated. The insulating film 43 is formed so as to cover the entire surface of the auxiliary electrode 23 as in this modification, and the auxiliary electrode 23 is insulated from the organic EL layer 25, so that the luminous efficiency of the organic U layer 42 can be improved. In addition, the insulating film 43 is formed so as to cover the entire surface of the auxiliary electrode 23, whereby the auxiliary electrode 23 and the cathode% are separated by the insulating film 43 and reliably insulated to prevent the aforementioned short circuit or leakage current. (Manufacturing method of the liquid crystal display device) FIGS. 6A to 6G are schematic cross-sectional views showing the manufacturing method of the above-mentioned a, b, and oscilloscope according to the sequence of steps described above. Here, the manufacturing process of the organic EL lighting device, which is the main structure of the liquid crystal display device of the present example, will be explained with reference to pin 15. First, as shown in FIG. 6A, an anode 22 made of ITO or the like is formed on a third transparent substrate 21 made of glass or the like, and a film such as an Ill (A1) film 31 is formed on the anode 22 as an electrode material. 20 Next, as shown in Fig. 6B, the A1 film 31 is formed into an electrode shape, and a pattern of the auxiliary electrode 23 is formed. At this time, the auxiliary electrode 23 is formed at a position which coincides with the non-formation region of the display pixel electrode 10 when it overlaps the liquid crystal cell 2. Next, as shown in FIG. 6C, a silicon oxide film 44 made of an insulating inorganic material 17 200535516 is formed on the anode 22 to cover the auxiliary electrode 23. ... after ', as shown in FIG. 6D, the oxygen-cut film material is shaped like a heart of the auxiliary electrode ^, and the pattern of the insulating film 43 covering the entire surface of the auxiliary electrode 23 is sub-formed. 5 Next, the surface of the anode 22 is oxidized using an oxygen plasma. Next, as shown in FIG. 1, the organic layer M is formed on the anode 22 by evaporation to cover the insulating film 43. Among them, 2tnata steamed on the anode 22 side is used as a hole injection layer, α-NPD is plated as a hole transport layer, and steamed ore is used as a light emitting layer, which is an organic EL layer 25 having a layer structure. Next, on the organic fairy layer 25, LiF was deposited to a thickness of 0.5 nm and A1 was formed to a thickness of nm, thereby forming a cathode%. Next, as shown in FIG. 6F, the third glass substrate 21 is sealed with an epoxy-based adhesive under a dry nitrogen atmosphere using a sealing plate 28 to which an absorbent material 27 composed of an oxidized period is attached. The plate 28 is thereby sealed. In this way, the organic EL lighting device 15 used as a backlight in this modification is completed. The organic light emitting device 42 emits green light. The liquid crystal cell 2 is manufactured by a known method. For example, a pattern of a stripe-shaped transparent electrode 11 made of IT0 or the like is mostly formed on the surface of the first transparent substrate 13 made of glass or the like, and then an alignment film 12 is formed so as to cover the transparent electrode 1b and made of glass or the like. After the majority of the second transparent substrate 16 is formed on the surface of the second transparent substrate 16 with a straight stripe-shaped transparent electrode, the alignment film 15 is formed so as to cover the transparent electrode 14. Next, as shown in FIG. 6G, the i-th and second transparent substrates 13 and the second transparent substrate 13 are made to be bonded through a separator for controlling the film thickness of the injected liquid crystal, so that the transparent electrode 11 and the transparent electrode 14 are perpendicular to each other and A liquid crystal 18 200535516 is injected into the interior thereof to form a liquid crystal Π. Finally, polarizing plates 18 and 19 are formed inside the i-th and second transparent substrates 13 and 16. As shown by the circle c in the figure, the portions of the transparent electrodes u, 14 that are perpendicular to each other, 重, constitute the pixel electrode 10. 5 10 Next, the liquid crystal cell 2 and the organic EL lighting device 42 are overlapped and fixed, so that the polarizing plate 18 of the liquid day-to-day cell 2 and the third transparent base of the organic EL lighting device 42 are oriented in a grid shape. The auxiliary electrode 23 is located at a position between the display pixel electrode 1 () arranged in a rectangle with the non-formed area of the display pixel electrode 10, and the liquid crystal display H41 is completed. In order to surely perform this overlapping step, it is preferable to provide alignment marks at appropriate portions of the liquid crystal cell 2 and the organic anal illumination device 42. As explained above, in this embodiment, since the auxiliary electrode 23 made of a metal material is sighed on the anode 22 of the transparent electrode in advance, the resistance value of the anode 22 can be reduced, and uneven light emission or light emission caused by voltage reduction can be prevented ... The organic ELfe that is used as a backlight, which can achieve complete uniform light emission and high reliability, is set 42. χ, since the auxiliary electrode 23 is provided in the non-formation area of the liquid crystal display and the pixel pixel electrode 10, the problem of reducing the workability of the lighting device due to the shading of the auxiliary electrode 23 can be prevented. Since the insulating film 43 covers the entire surface of the auxiliary electrode 23, no current flows through the light-shielded portion of the organic electrode layer 25 of the organic EL layer 25, and the low power consumption of the existing device can be prevented by forming the insulating film. Short circuit or leakage current of auxiliary electrode 23 2 cathode 26 caused by poor flatness of auxiliary electrode 23. According to the foregoing, a liquid crystal display with an organic el lighting device with high reliability and low power consumption can be completely and uniformly emitted. 19 200535516 The second embodiment is described below. The second embodiment of the present invention will be described below. In this embodiment, the structure of the organic EL lighting device of the liquid crystal display device is slightly different from the first embodiment. In addition, The same components as those of the liquid crystal display device of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Fig. 7 is a schematic cross-sectional view showing the structure of an organic EL lighting device that is a constituent element of the liquid crystal display device of this embodiment. The liquid crystal display device (the liquid crystal display device 51 shown in Fig. 8G) of this palladium-shaped display device includes: The liquid crystal cell 2 which is the same as the first embodiment; an organic el lighting device 52 used as a backlight of the liquid crystal cell 2. The organic EL lighting device 52 forms an auxiliary electrode on the surface of the third transparent substrate 21 made of glass or the like. Project No. 23, and an anode 22 of a transparent electrode made of ITO or the like is formed on the third transparent substrate 15 to cover the auxiliary electrode 23, and an insulation is formed on the anode 22 above the auxiliary electrode 23 A film 53 is formed on the anode 22 with a paper layer 25 and a cathode 26 of a metal electrode in order to cover the insulation, and a sealing plate 28 is provided above the cathode through a hygroscopic material 27 composed of an oxide insulation, etc. The adhesive seal plate 28 is shown in the figure. &Amp; 20, ', bar, and diaphragm 43 are made of ceremonial fossils or positive photosensitive polydonimine, etc., to form JE to imitate the shape of the auxiliary electrode 23. Formed via anode D at: The position above the electrode 23—the location, and the insulating film 43 separates the upper side of the auxiliary electrode from the organic _25, so that the auxiliary electrode 3 is insulated from the upper side of the auxiliary electrode 23. 20 200535516 The insulation is formed as in this embodiment. The film 53 is located at the same position above the auxiliary electrode 23 to insulate the auxiliary electrode 23 from the organic EL layer 25, thereby improving the luminous efficiency of the organic EL lighting device 52. Further, the insulating film 53 is formed so as to be located on the auxiliary electrode Where the position above 23 is the same, the auxiliary electrode 23 5 and the cathode 26 are separated by the insulating film 53 and reliably insulated to prevent the aforementioned short circuit or leakage current. (Manufacturing method of the liquid crystal display device) Fig. 8A to 8G The figure is a schematic cross-sectional view showing the method of manufacturing the liquid crystal display device according to the embodiment in the order of steps. Here, the manufacturing steps of the organic EL lighting device with the main structure of the liquid crystal display device of this embodiment will be explained. First, as shown in FIG. 8A, after a film such as an aluminum film is formed on the third transparent substrate 21 made of glass or the like as an electrode material, the eighth film 31 is formed into an electrode shape, and the auxiliary electrode 23 is formed. Of the pattern. At this time, the auxiliary electrode 15 is formed so as to be located at a position that coincides with the non-formation region of the display pixel electrode 10 when it overlaps the liquid crystal cell 2. Next, as shown in Fig. 8B, an anode 22 made of IT0 or the like is formed so as to cover the auxiliary electrode 23. Next, as shown in FIG. 8C, after coating and forming a positive-sensitivity 20-type polyimide film 54 on the anode 22, the transparent substrate is irradiated with light from the inside, and the auxiliary electrode 23 is used as a mask and lithography is used. The imaging method exposes the positive-sensitive polyacrylic film and exposes the sub-development, and processes the positive-sensitive polyimide film 54 as shown in the second figure to form an electrode-shaped insulating film 53.
接著，使用氧電漿氧化陽極22之表面。接著，如第8E 21 200535516 圖所示般於陽極22上藉蒸鍍法成膜有機EL層25使其覆蓋絕 緣膜53。其中’由陽極22側蒸錢2TNATA作為電洞注入層， 蒸鍍α-NPD作為電洞輸送層，且蒸鍍Alq作為發光層，形 成3層結構之有機EL層25。接著，於有機EL層25上再分別 5蒸鍍LiF厚度〇.5nm，A1厚度200nm，藉此形成陰極26。 接著，如第8F圖所示般使用貼附有由氧化鈀等構成之 吸濕材27之密封板28，並於乾燥氮氣環境下使用環氧樹脂 系黏著劑黏著第3玻璃基板21與密封板28，藉此進行密封。 如此一來，完成本變形例之用以作為背光之有機£]1照明裝 10置52。該有機EL照明裝置52發綠光。 液晶晶胞2係藉公知之方法製造。例如，於由玻璃等構 成之第1透明基板13表面形成多數*IT〇等構成之條紋狀之 透明電極11之圖案後，再形成配向膜12使其覆蓋透明電極 11 ’且於由玻璃等構成之第2透明基板16表面形成多數與由 15 ΙΤΟ等構成之透明電極u垂直之條紋狀之透明電極⑷灸，形 成配向膜15使其覆蓋透明電極μ。 接著，如第8G圖所示般，使第丨及第2透明基板13、16 配置成5¾著用以控制注人之液晶之膜厚之分隔物配置貼 合’使透明電極11與透明電極14垂直並對向，並於其内部 2〇 ’主入液a曰來形成液晶17。最後，於第1及第2透明基板13、 16之裡面形成偏光板18、19。如圖中之圓匚所示，互相垂直 <條紋狀之透明電極11、14所重疊之部分構成顯示像素電 極10。 接著，將液晶晶胞2與有機EL照明裝置52重疊並固定， 22 200535516 使液晶晶胞2之偏光板is與有機EL照明裝置52之第3透明基 板21對向，且使格子狀之輔助電極巧與顯示像素電極川之 非形成領域之配置成矩形之顯示像素電極1〇間位置一致， 完成液晶顯示裝置51。為了確實進行該重疊步驟，係以於 5液晶晶胞2及有機EL·明裝置52之各個適當之部位設有對 位標諸為佳。 如以上之說明，由於本實施形態事先於透明電極之陽 極22内設有由金屬材料構成之輔助電極Μ，因此可降低陽 極22之電阻值，可防止電壓降低所造成之發光不均或發 ⑺熱，而實現可完整地均-發光之可靠性高之用以作為背光 之有機EL照明裝置52。X，由於輔助電極23設置於液晶晶 胞2之顯示像素電極1〇之非形成領域，因此，可防止因輔助 電極23遮光造成有機EL照縣置52亮度降低之問題。且， 由於形成有絕緣膜53使其覆蓋輔助電極23之表面全體，因 15此，有機EL層25之輔助電極23遮光之部位沒有電流流動， 可實現有機EL^明裝置52之低消耗電力。且，藉由形成絕 緣膜53，可防止辅助電極23之平坦性不良所造成之輔助電 極23與陰極26之短路或漏電流問題。依據前述，可實現具 有可靠性高、可完整地均—發光之低消耗電力之有機仙照 20 明裝置之液晶顯示裝置。 產業上之可利用性 本發明可實現-種提昇背光之發光效率並實現低消耗 電力’並具有可防止輔助電極與第2電極間產生短路或漏電 机之可罪性冋且可凡整地均一發光之低消耗電力之有機仙 23 200535516 照明裝置之液晶顯示裝置。 【圖式簡單說明3 第1A圖、第1B圖係顯示第1實施形態之液晶顯示裝置 之構造之概略平面圖。 5 第1C圖係沿第1B圖之直線I-Ι之概略截面圖。 第2圖係顯示第1實施形態之液晶顯示裝置之構成要素 之有機EL照明裝置之構造之概略截面圖。 第3圖係顯示使用於液晶顯示裝置之背光之有機EL照 明裝置之比較例（習知例）之結構之概略截面圖。 修 10 第4 A〜第4F圖係依步驟順序顯示第1實施形態之液晶 顯示裝置之製造方法之概略截面圖。 第5圖係顯示第1實施形態之變形例之液晶顯示裝置之 構成要素之有機EL照明裝置之結構之概略截面圖。 第6A圖〜第6G圖係依步驟順序顯示第1實施形態之變 15 形例之液晶顯示裝置之製造方法之概略截面圖。 第7圖係顯示第2實施形態之液晶顯示裝置之構成要素 之有機EL照明裝置之結構之概略截面圖。 Φ 第8A圖〜第8G圖係依步驟順序顯示第2實施形態之液 晶顯示裝置之製造方法之概略截面圖。 20 第9圖係顯示習知有機EL照明裝置之一結構例之概略 截面圖。 【圖式之主要元件代表符號表】 1，41，51...液晶顯示裝置 3,42,52…有機EL照明裝置 2...液晶晶胞 10…顯示像素電極 24 200535516 11，14...透明電極 12，15...配向膜 13…第1透明基板 16…第2透明基板 17.. .液晶層 18.19.. .偏光板 21…第3透明基板 22，102…陽極 23.. .輔助電極 24,43,53…絕緣膜 25.. .有機EL層 26.104.. .陰極 27.. .吸濕材 28.105.. .密封板 31.. .鋁膜 32.. .聚醯亞胺膜 44.. .氧化矽膜 54.. .正感光性聚醯亞胺膜 101.. .透明基板 106.. .黏著劑Next, the surface of the anode 22 was oxidized using an oxygen plasma. Next, as shown in FIG. 8E 21 200535516, an organic EL layer 25 is formed on the anode 22 by vapor deposition to cover the insulating film 53. Among them, 2TNATA is vapor-deposited on the anode 22 side as a hole injection layer, α-NPD is vapor-deposited as a hole transport layer, and Alq is vapor-deposited as a light-emitting layer to form a three-layer organic EL layer 25. Next, a LiF thickness of 0.5 nm and an Al thickness of 200 nm were deposited on the organic EL layer 25 to form a cathode 26, respectively. Next, as shown in FIG. 8F, a sealing plate 28 to which a hygroscopic material 27 made of palladium oxide or the like is attached, and the third glass substrate 21 and the sealing plate are adhered with an epoxy-based adhesive under a dry nitrogen atmosphere. 28, thereby sealing. In this way, the organic lighting device 52 used as a backlight in this modification is completed. This organic EL lighting device 52 emits green light. The liquid crystal cell 2 is manufactured by a known method. For example, a pattern of a stripe-shaped transparent electrode 11 made of * IT0 and the like is formed on the surface of the first transparent substrate 13 made of glass and the like, and then an alignment film 12 is formed so as to cover the transparent electrode 11 'and made of glass or the like. On the surface of the second transparent substrate 16 are formed a plurality of stripe-shaped transparent electrode moxibustion perpendicular to the transparent electrode u composed of 15 ITO etc., and an alignment film 15 is formed so as to cover the transparent electrode μ. Next, as shown in FIG. 8G, the first and second transparent substrates 13 and 16 are arranged to be arranged with a spacer for controlling the film thickness of the injected liquid crystal. The transparent electrode 11 and the transparent electrode 14 are bonded together. Liquid crystals 17 are formed perpendicularly and oppositely, and the main liquid 20a is formed in the interior thereof. Finally, polarizing plates 18 and 19 are formed inside the first and second transparent substrates 13 and 16. As shown by circles in the figure, the overlapping portions of the stripe-shaped transparent electrodes 11, 14 that are perpendicular to each other constitute the display pixel electrode 10. Next, the liquid crystal cell 2 and the organic EL lighting device 52 are overlapped and fixed. 22 200535516 The polarizing plate is of the liquid crystal cell 2 is opposed to the third transparent substrate 21 of the organic EL lighting device 52, and a grid-shaped auxiliary electrode is provided. It coincides with the position of the rectangular display pixel electrode 10 arranged in a non-formed field of the display pixel electrode, and the liquid crystal display device 51 is completed. In order to surely perform this overlapping step, it is preferable to provide alignment marks at appropriate locations of the 5 liquid crystal cell 2 and the organic EL device 52. As explained above, in this embodiment, since the auxiliary electrode M made of a metal material is provided in the anode 22 of the transparent electrode in advance, the resistance value of the anode 22 can be reduced, and the uneven light emission or the occurrence of the voltage drop can be prevented. The organic EL lighting device 52 which is used as a backlight with high reliability which can completely and uniformly emit light is realized. X, since the auxiliary electrode 23 is provided in a non-formation area of the display pixel electrode 10 of the liquid crystal cell 2, it is possible to prevent the brightness of the organic EL illumination 52 from being reduced due to the light shielding of the auxiliary electrode 23. In addition, since the insulating film 53 is formed so as to cover the entire surface of the auxiliary electrode 23, no current flows in the light-shielded portion of the auxiliary electrode 23 of the organic EL layer 25, and low power consumption of the organic EL device 52 can be achieved. Moreover, by forming the insulating film 53, it is possible to prevent the short circuit of the auxiliary electrode 23 and the cathode 26 caused by the poor flatness of the auxiliary electrode 23 or the problem of leakage current. According to the foregoing, it is possible to realize a liquid crystal display device having a high reliability, an organic light emitting device with a low power consumption, and a uniform and uniform light emission. Industrial Applicability The present invention can realize a kind of improvement of the luminous efficiency of the backlight and low power consumption, and has the guilty of preventing short circuit or leakage of the motor between the auxiliary electrode and the second electrode, and can uniformly emit light everywhere. Low power consumption of organic fairy 23 200535516 lighting device of liquid crystal display device. [Brief Description of Drawings 3] Figures 1A and 1B are schematic plan views showing the structure of the liquid crystal display device of the first embodiment. 5 Figure 1C is a schematic cross-sectional view taken along line I-I of Figure 1B. Fig. 2 is a schematic cross-sectional view showing the structure of an organic EL lighting device which is a component of the liquid crystal display device of the first embodiment. Fig. 3 is a schematic cross-sectional view showing the structure of a comparative example (a conventional example) of an organic EL lighting device used as a backlight of a liquid crystal display device. Figs. 4A to 4F are schematic sectional views showing a method of manufacturing the liquid crystal display device of the first embodiment in the order of steps. Fig. 5 is a schematic cross-sectional view showing the structure of an organic EL lighting device that is a component of a liquid crystal display device according to a modification of the first embodiment. Figures 6A to 6G are schematic cross-sectional views showing a method for manufacturing a liquid crystal display device according to the 15th modification of the first embodiment in the order of steps. Fig. 7 is a schematic cross-sectional view showing the structure of an organic EL lighting device which is a constituent element of a liquid crystal display device of a second embodiment. Φ Figures 8A to 8G are schematic cross-sectional views showing the manufacturing method of the liquid crystal display device of the second embodiment in the order of steps. 20 FIG. 9 is a schematic cross-sectional view showing a configuration example of a conventional organic EL lighting device. [Representative symbol table of main elements of the figure] 1, 41, 51 ... Liquid crystal display device 3, 42, 52 ... Organic EL lighting device 2 ... Liquid crystal cell 10 ... Display pixel electrode 24 200535516 11, 14 ... Transparent electrodes 12, 15 ... Alignment film 13 ... First transparent substrate 16 ... Second transparent substrate 17. Liquid crystal layer 18.19 ... Polarizer 21 ... Third transparent substrate 22, 102 ... Anode 23. Auxiliary electrodes 24, 43, 53 ... Insulation film 25 ... Organic EL layer 26.104 ... Cathode 27 ... Hygroscopic material 28.105 ... Sealing plate 31 ... Aluminum film 32 ... Polyimide film 44 .. Silicon oxide film 54 .. Positive photosensitive polyimide film 101 .. Transparent substrate 106 .. Adhesive