1303139 九、發明說明： 【發明所屬之技術領域】 本發明有關於一種有機發光裝置，特別有關一種具有限電 流設計之有機發光裝置。 【先前技術】 有機電激發光元件（organic electroluminescent devices ; OLED or polymer electroluminescent devices ; PLED)有輕薄、自 發光、低消耗功率、不需背光源、無視角限制及高反應速率等 優良特性，已被視為平面顯示器的明日之星。除了顯示器應用 外，由於有機電激發光元件可在輕薄、可撓式的基材上形成陣 列結構，所以也非常適合應用於照明，一般預估有機電激發光 元件的發光效率提昇至100Lm/W以上，即有機會取代一般照明 光源，因此效率的提昇成為有機電激發光元件發展的重要課題 之° 但目前有機激電發光元件在照明應用上，因為OLED裝置 所使用之有機材料厚度都很薄，大約在35nm以下，通常在 15〜20nm之間，而且此類材料在製程上易受雜質微粒的污染， 以及易受外在環境（例如水氣、氧氧與UV光）的影響。最嚴重的 是，當OLED裝置面積增大時，若局部出現一小點區域產生近 乎短路狀態，便將會導致整個系統電流遽增且集中，造成其它 正常的發光區域受其影響，而得不到足夠電流驅動，使得整個 顯不糸統靡疾。 第1圖所示之習知有機發光顯示裝置100，係由串聯地連 接複數個發光單元10所構成，為了避免個別的發光單元不會因 為失效之發光單元的影響，而改變其正常操作時之發光亮度， 0178-A21080TWF(N2);P05940008TW；dennis 1303139 因此需要一定電流源Is來驅動整個顯示裝置。然而，由於使用 定電流源Is來驅動，當發光單元10超過一定數量時，顯示裝置 之端電壓Vs將大到十分可觀。再者，由於發光元件是串聯連 接，因此流經失效之發光單元之電流，仍然會造成電功率之浪 費，而且失效的發光單元愈多，此種效應愈明顯。 【發明内容】 有鑑於此，本發明之首要目的，係在於避免失效之顯示單 元，影響其它正常顯示單元之亮度，同時避免電功率之浪費。 φ 為達成上述目的，本發明提供一種有機發光裝置，包括複 數並聯連接之發光單元，每一發光單元包括一有機發光二極體 (OLED)，具有一端耦接至一電壓源之一極；以及一限電流單元， 串聯地連接至有機發光二極體，並具有一端耦接至電壓源之另 _極〇 根據上述目的，本發明亦提供一種有機發光裝置，包括一 第一及一第二透明基板；以及複數並聯連接發光單元，設置於 第一、第二透明基板之間，每一發光單元包括一有機發光二極 ^ 體，具有一第一電極設置於第一透明基板上、一第二電極以及 一有機堆疊（organic stack)層設置於上述第一、第二電極之間； 以及一限電流單元，係電性連接至有機發光二極體之第二電 極，以形成一串聯結構，並且具有一阻抗層。 根據上述目的，本發明亦提供一種有機發光裝置之製造方 法，包括於一第一透明基板上形成一有機發光二極體，其中有 機發光二極體具有一第一電極設置於上述第一透明基板上、一 第二電極以及一有機發光堆疊層設置於上述第一、第二電極之 間；以及形成具有一阻抗層之一限電流單元，用以與有機發光 0178 - A21080TWF(N2);P05940008TW;dennis 6 1303139 二極體串聯連接。 為了讓本發明之上述和其他目的、特徵、和優點能更明顯 易懂，下文特舉一較佳實施例，並配合所附圖示，作詳細說明 如下： 【實施方式】 第2A圖所示係為本發明之有機發光裝置之示意圖。如圖 所示，有機發光裝置200A係包括複數並聯連接之發光單元20， 且每一發光單元20包括一有機發光二極體（organic light emitting diode ; OLED)22以及一限電流單元24。舉例而言，有 機發光二極體22之陽極係耦接至電壓源Vs之陽極，且限電流 單元24係串聯地連接至有機發光二極體22,並具有一端耦接至 電壓源Vs之陰極。 除此之外，有機發光裝置200A中之發光單元20係可排列 成一矩陣形式，並且有機發光裝置200A係可為一照明裝置或一 顯示裝置，且有機發光二極體22係可為任何顏色之有機發光二 極體，但作為照明之用時，有機發光二極體22最好為白光有機 二極體（white 0LED)，但不限定於此。 於本發明之實施例中，係藉由複數個並聯連接之發光單元 20，構成一大面積之發光裝置，藉此可避免發生失效之發光單 元影響到整個發光裝置的正常操作。一般而言，本發明之實施 例中之電壓源Vs係可為一脈衝式電壓源或一交流式（AC)電壓 源。此外，限電流單元24係可為一儲能元件，例如一電容性元 件、一電感性元件或是_聯連接之一電容性元件及一電感性元 件，由於電感性或電容性元件在非直流狀態下，具有限電流的 作用，因此可藉以確保電源供應器不會無限制地供應短路大電 0178-A21080TWF(N2)；P05940008TW；dennis 7 1303139 流。 — 第2B圖係為本發明之有機發光裝置之一實施例。如圖所 不，有機發光裝置2〇〇B係包括複數並聯連接之發光單元，且每 叙光單元包括串聯連接之一有機發光二極體22一1〜η以及 —電容器C1〜Cn。有機發光裝置200Β中之有機發光二極體 22—1〜22—η係藉由電源Vs來驅動，於本實施例中，電源％係 為父流式電壓源或脈衝式電壓源。 假設有機發光二極體22一2發生短路情形時，由於電容器 C2在父流式電壓源或脈衝式電壓源之驅動下，如同一電性阻 抗，並可使流經此阻抗之電流被限制在一特定大小之下，故不 會造成整個系統癱瘓。再者，此時電容器C2亦可作為一儲能元 件，如小電池一般，當電壓源由高電壓轉低電壓時，藉由放電 的動作提供電能至其它正常工作之有機發光二極體22 i、 22—3 〜22—11 〇 - _第2C圖係為本發明之有機發光裝置之另一實施例。如圖所 示有機發光裝置200C係包括複數並聯連接之發光單元，且每 發光單7G包括串聯連接之一有機發光二極體22j〜22打以及 —電感器L1〜Lne有機發光裝χ 2默中之有機發光二極體 係藉由電源％來驅動，於本實施例中，電源力係 為父流式電壓源或脈衝式電壓源。 ’、 假▲設有機發光二極體22_2發生短路情形時，由於電感器 在父流式電源或脈衝式電壓源之驅動下，如同_電性阻 抗，並可使流經此阻抗之電流被限制在—特定大小之下故不 會造成整㈣統癱瘓。再者，此時電感器L2村 件’當電壓源由高電壓轉低電壓時，如電流源一般釋放出二；， 至其它正常工作之有機發光二極體22少22— Μ : 0178 - A2H)8〇TWF(⑽，·Ρ05940008Τνν;(^ηη|·3 8 1303139 感器L2亦可人麻t 一金屬佈線繞組，如同保險絲一般，當承受短 =日'’自動形成斷路狀態’更可以進一步區隔失效之有機 極體22-2與其它正常之有機發光二極體22 1、 22—2〜22—n。 - 第2D圖係為本發明之有機發光裝置之又一實施例。如圖 七一 &有2發光裝置2〇〇D係包括複數並聯連接之發光單元，且 母二發光單元包括串聯連接之一有機發光二極體22J〜22_n、一 C1〜Cn以及一電感器u〜Ln。有機發光裝置中之 光一極體22—係藉由電源％來驅動，於本實施例 ，電源Vs係為交流式電M或脈衝式電壓 :㈣W發生短路情形時，由於串聯連接之電容器= 感态，在交流式電壓源或脈衝式電壓源之驅動下，如同一電 ί±阻抗，並可使流經此阻抗之電流被限制在一特定大小之下， 故不會造成整個系統癱瘓。 再者，此時電容器C2亦可作為一儲能元件，如小電池一 般’當電壓源由高電壓轉低錢時，藉由放電的動作提供電能 至其它，常工作之有機發光二極體22一 1、22—3〜22一η。同時，此 時電感l§ L2亦可作為—儲能元件，當電壓源由高電壓轉低電壓 時’如電流源-般釋放出能量，至其它正f工作之有機發光二 = 22」、22—3〜22』。此外’電感器L2係可包括—金屬佈線 ^且，如同保險絲-般，當承受短路電流時，自動形成斷路狀 怨，更可以進一步區隔失效之有機發光二極體22—2與其它正常 之有機發光二極體22 1、22 2〜22 η。 於本發明中，由於發光元件是並聯連接，因此當少數局部 發光單元失效時，將不至於嚴重影響到整個發光裝置的效能， 再者，由於電感性或電容性元件係為非耗能性元件，理論上並 0178-Α21080TWF(N2) ；P〇5940008TW；dennis 9 1303139 不會造成額外的功率消耗，而導致顯示裝置過熱。 第3A圖所示係為本發明之有機發光裝置之一結構示意 圖。如圖所示，有機發光裝置3Ό0Α係包括一第一基板32、一 第二基板34以及設置於二基板32與34間之複數並聯連接之發 光單元22_1〜22_n，每一發光單元22J〜22_n係包括串聯連接 之一有機發光二極體22與一限電流單元24。一般而言，第一基 板3 2係可作為一上基板，而第二基板3 4係可作為一下基板， 且第一、第二基板32與34係為透明基板，但不限定於此。 有機發光二極體22係包括一第一電極41、一第一有機傳 輸層42、一有機發光層43、一第二有機傳輸層44、以及一第二 電極45，其中第一有機傳輸層42、有機發光層43與第二有機 傳輸層44係構成一有機堆疊層。舉例來說，第一電極41與第 二電極45係分別為有機發光二極體22之陽極與陰極，而第一、 第二有機傳輸層42與44係分別為一電子傳輸層以及一電洞傳 輸層，但不用以限定本發明。有機傳輸層42與44為電子傳輸 層或電洞傳輸層係由電極41與45之極性所決定。此外，第一、 第二電極41與45係可以金屬導電材料、金屬氧化物材料、高 分子複合材料所構成。 限電流單元24係包括一阻抗層46，設置於有機發光二極 體22與一匯流排層47之間，其中阻抗層46與有機發光二極體 22係於匯流排層47與第一透明基板32之間形成一堆疊結構。 發光裝置300A中所有的發光單元20_1〜20__n係藉由匯流排層 47而並聯在一起。舉例來說，所有第一電極41係連接至電源 Vs之正極，且匯流排層47係連接至電源Vs之負極，使得所有 的發光單元20_1〜20_2係相互地並聯。 於本實施例中，阻抗層46係可為一電容性阻抗層 0178-A21080TWF(N2)；P05940008TW；dennis 10 1303139 (capacitive impedance layer)或電容性元件結構（capacitive structure)。舉例來說，阻抗層46係可為藉由濺鍍或電漿辅助化 學氣相沉積（plasma enhanced chemical vapor deposition ; PECVD) 形成於電極45上之一無機介電層（inorganic dielectric layer)，例 如二氧化矽（SiOx)。或者是說，阻抗層46係可為一有機介電層 (inorganic dielectric layer)，例如聚乙醯胺（polyimide)、環氧樹 脂（epoxy)、或壓克力樹脂等分子量大於1 〇〇〇之高分子聚合物， 或者例如 CuPc(Copper Phthalocyanine)、N，N’_bis-(l-naphthy)-N， N’diphenyM，1 ’-biphenyl-4-4’-diamine(NPB) 、 N，N’-diphenyl-N，N’-bis(3-methyl-phenyl)-l，l ’-biphenyl-4,4’-dia 1^116(丁？0)、4,4’-1^，1^’-(1;1〇31^2〇16_1^1^1134(^3?)等分子量小於 1000之小分子聚合物。 此外，阻抗層46亦可為一電感性阻抗層（inductive impedance layer)或電感性元件結構（inductive structure)，且阻抗 層46係可包括有機導磁材料或無機導磁材料，並可包括一具有 良好導電性之金屬佈線繞組。舉例而言，金屬佈線繞組可設計 成承受一短路電流時，自動形成斷路狀態，用以隔絕失效之有 機發光二極體與正常之有機發光二極體。 第3B圖所示係為本發明之有機發光裝置之另一結構示意 圖。如圖所示，有機發光裝置3 00B係包括一苐一基板32、一 第二基板34以及設置於二基板32與34間之複數並聯連接之發 光單元22_1〜22_n，每一發光單元22一 1〜22一η係包括串聯連接 之一有機發光二極體22與一限電流單元24。一般而言，第一基 板32係可作為一上基板，而第二基板34係可作為一下基板， 且第一、第二基板32與34係為透明基板，但不限定於此。有 機發光二極體22係與第3 Α圖中相似，於此不再累述。 0178-A21080TWF(N2)；P05940008TW；dennis 11 1303139 於本實施例中，限電流單元24係設置於基板32之上，且 包括第一導電層48、一阻抗層46以及一第二導電層49所構成 之一堆疊層，其中所有限電流單元24中之第一導電層48係藉 由打線(bonding wire)的方式，電性連接至有機發光二極體22之 電極（陰極或陽極）45，換句話說，有機發光二極體22與限電流 單元24係藉由導線23而電性連接。 舉例而言，所有第一電極41係連接至電源Vs之正極（或負 極），且所有第二導電層49係連接至電源Vs之負極（或正極）， 使得所有的發光單元20_1〜20_2係相互地並聯。此外，第一、 第二基板32與34之間係設置有複數絕緣性間隔物（spacer)26， 用以區隔發光單元。如第3A圖中所述，阻抗層46係可為一電 容性阻抗層（capacitive impedance layer)、一電容性元件結構 (capacitive structure)、一 電感性阻抗層（inductive impedance layer)或電感性元件結構（inductive structure)，於此不再累述。 第3C圖所示係為本發明之有機發光裝置之又一結構示意 圖。如圖所示，有機發光裝置300C係包括一第一基板32、一 第二基板34以及設置於二基板32與34間之馥數並聯連接之發 光單元22_1〜22_n，每一發光單元22_1〜22_n係包括串聯連接 之一有機發光二極體22與一限電流單元24。一般而言，第一基 板32係可作為一上基板，而第二基板34係可作為一下基板， 且第一、第二基板32與34係為透明基板，但不限定於此。有 機發光二極體22係與第3A圖中相似，於此不再累述。 於本實施例中，限電流單元24係設置於基板32之上，且 包括一阻抗層46以及一第二導電層49所構成之一堆疊層，並 且有機發光二極體22之電極（陰極或陽極）45係延伸覆蓋至阻抗 層46之上方，且與阻抗層46以及第二導電層49形成一堆疊結 0178-A21080TWF(N2)；P05940008TW；dennis 1303139 構，並使得限電流單元24與有機發光二極體22產生電性連接。 此外，如圖所示，除了電極45之外，有機發光二極體22之係 藉由絕緣物27、28與限電流單元24之阻抗層46及導電層49 電性隔離。 舉例而言，所有第一電極（若作為陽極）41係連接至電源vs 之正極’且所有弟一導電層49係連接至電源Vs之負極，使得 所有的發光單元20—1〜20J2係相互地並聯。如第3A圖中所述， 阻抗層46係可為一電容性阻抗層（capacitive impedance layer)、 一電容性元件結構（capacitive structure)、一電感性阻抗層 (inductive impedance layer)或電感性元件結構（inductive structure)，於此不再累述。 本發明亦揭露一種有機發光裝置之製造方法，包括下列步 驟。 首先，於一第一透明基板上形成一有機發光二極體22，其 中有機發光二極體具有一第一電極41設置於第一透明基板上、 一第二電極45以及一有機發光堆疊層（42〜44)設置於第一、第二 電極32與32之間。接者，形成具有一阻抗層46之一限電流單 元24，用以與有機發光二極體22串聯連接。 其中，阻抗層46係形成於有機發光二極體22之第二電極 45上，如第3A圖中所示，或者是說，限電流單元24更包括一 第一導電層48設置於阻抗層46之上，並且藉由打線（bonding wire)方式連接至有機發光二極體22之第二電極45上，如第3B 圖中所示。亦或是說，有機發光二極體22之第二電極45係延 伸覆蓋至阻抗層46之上方，使得限電流單元24與有機發光二 極體22產生電性連結，如第3C圖中所示。 於前述步驟中，阻抗層46係可為一電容性阻抗層 0178-A21080TWF(N2)；P05940008TW；dennis 13 1303139 (capacitive impedance layer)或電容性元件結構（capacitive structure)。舉例來說，阻抗層46係可為一無機介電層（inorganic dielectric layer)，例如二氧化矽（SiOx)，並藉由濺鍍或電漿輔助 化學氣相沉積（plasma enhanced chemical vapor deposition ; PECVD)形成於電極45上。或者是說，阻抗層46係可為一有機 介電層（inorganic dielectric layer)，例如聚乙醯胺（polyimide)、 環氧樹脂（epoxy)、或壓克力樹脂（acrylic resin)等分子量大於 1000之高分子聚合物，或者例如CuPc(Copper Phthalocyanine)、 NPB、TPD、CBP等分子量小於1000之小分子聚合物，並藉由 熱蒸鐘（thermal evaporation)或旋轉塗佈（spin coating)等方式形 成於電極45之上。 此外，阻抗層46亦可為一電感性阻抗層（inductive impedance layer)或電感性元件結構（inductive structure)，且阻抗 層46係可由有機導磁材料或無機導磁材料所構成，並且可包括 一具有良好導電性之金屬佈線繞組。 舉例來說，金屬佈線繞 組可設計成承受一短路電流時，自動形成斷路狀態，用以隔絕 失效之有機發光二極體與正常之有機發光二極體。 雖然本發明已以較佳實施例揭露如上，然其並非用以限定 本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍内， 當可作些許之更動與潤飾，因此本發明之保護範圍當視後附之 申請專利範圍所界定者為準。 0178-A21080TWF(N2)；P05940008TW；dennis 14 1303139 【圖式簡單說明】 第1圖係顯示一習知有機發光顯示裝置。 第2A圖係為本發明之有機發光裝置之一示意圖。 第2B圖係為本發明之有機發光裝置之一實施例。 第2C圖係為本發明之有機發光裝置之一實施例。 第2D圖係為本發明之有機發光裝置之一實施例。 第3A圖所示係為本發明之有機發光裝置之一結構示意圖。 第3B圖所示係為本發明之有機發光裝置之又一結構示意 圖。 第3C圖所示係為本發明之有機發光裝置之再一結構示意 【主要元件符號說明】 100 :顯示裝置； 10 :發光單元；1303139 IX. Description of the Invention: [Technical Field] The present invention relates to an organic light-emitting device, and more particularly to an organic light-emitting device having a current-limiting design. [Prior Art] Organic electroluminescent devices (OLED/polymer electroluminescent devices; PLED) have excellent characteristics such as light weight, self-luminescence, low power consumption, no backlight, no viewing angle limitation, and high reaction rate. Think of tomorrow's stars as flat-panel displays. In addition to display applications, since organic electroluminescent elements can form array structures on thin, flexible substrates, they are also very suitable for illumination. Generally, the luminous efficiency of organic electroluminescent elements is estimated to be 100Lm/W. Above, there is an opportunity to replace the general illumination source, so the improvement of efficiency becomes an important issue in the development of organic electroluminescent elements. However, the current organic electroluminescent elements are used in lighting applications because the thickness of organic materials used in OLED devices is very thin. It is below about 35 nm, usually between 15 and 20 nm, and such materials are susceptible to contamination by foreign particles in the process and are susceptible to external environments such as moisture, oxygen and UV light. The most serious problem is that when the area of the OLED device increases, if a small area is locally generated, the near-short state will cause the current of the whole system to increase and concentrate, causing other normal light-emitting areas to be affected by it. Driven by enough current, making the whole manifestation of dysentery. The conventional organic light-emitting display device 100 shown in FIG. 1 is composed of a plurality of light-emitting units 10 connected in series, in order to prevent individual light-emitting units from changing their normal operation due to the failure of the failed light-emitting unit. Luminance, 0178-A21080TWF (N2); P05940008TW; dennis 1303139 Therefore, a certain current source Is is required to drive the entire display device. However, since the constant current source Is is used for driving, when the light-emitting unit 10 exceeds a certain amount, the terminal voltage Vs of the display device will be large enough. Moreover, since the light-emitting elements are connected in series, the current flowing through the failed light-emitting unit still causes a waste of electric power, and the more the failed light-emitting units, the more obvious this effect is. SUMMARY OF THE INVENTION In view of this, the primary object of the present invention is to avoid a failure of the display unit, affecting the brightness of other normal display units, while avoiding waste of electrical power. φ In order to achieve the above object, the present invention provides an organic light-emitting device comprising a plurality of light-emitting units connected in parallel, each light-emitting unit comprising an organic light-emitting diode (OLED) having one end coupled to a voltage source and a voltage source; A current limiting unit is connected in series to the organic light emitting diode and has one end coupled to the voltage source. According to the above object, the present invention also provides an organic light emitting device comprising a first and a second transparent a substrate and a plurality of parallel connection light-emitting units disposed between the first and second transparent substrates, each of the light-emitting units including an organic light-emitting diode, having a first electrode disposed on the first transparent substrate and a second An electrode and an organic stack layer are disposed between the first and second electrodes; and a current limiting unit electrically connected to the second electrode of the organic light emitting diode to form a series structure, and Has a resistive layer. According to the above objective, the present invention also provides a method of fabricating an organic light-emitting device, comprising: forming an organic light-emitting diode on a first transparent substrate, wherein the organic light-emitting diode has a first electrode disposed on the first transparent substrate a second electrode and an organic light emitting stacked layer are disposed between the first and second electrodes; and a current limiting unit having a resistive layer is formed for the organic light emitting 0178 - A21080TWF (N2); P05940008TW; Dennis 6 1303139 Diodes are connected in series. The above and other objects, features, and advantages of the present invention will become more apparent and understood. It is a schematic diagram of the organic light-emitting device of the present invention. As shown in the figure, the organic light-emitting device 200A includes a plurality of light-emitting units 20 connected in parallel, and each of the light-emitting units 20 includes an organic light emitting diode (OLED) 22 and a current limiting unit 24. For example, the anode of the organic light emitting diode 22 is coupled to the anode of the voltage source Vs, and the current limiting unit 24 is connected in series to the organic light emitting diode 22 and has a cathode coupled to the voltage source Vs at one end. . In addition, the light emitting units 20 in the organic light emitting device 200A can be arranged in a matrix form, and the organic light emitting device 200A can be a lighting device or a display device, and the organic light emitting diode 22 can be any color. The organic light-emitting diode 22 is preferably a white organic diode (white 0LED), but is not limited thereto. In the embodiment of the present invention, a plurality of light-emitting units 20 connected in parallel form a large-area light-emitting device, thereby preventing the malfunctioning light-emitting unit from affecting the normal operation of the entire light-emitting device. In general, the voltage source Vs in the embodiment of the present invention may be a pulsed voltage source or an alternating current (AC) voltage source. In addition, the current limiting unit 24 can be an energy storage component, such as a capacitive component, an inductive component, or a capacitive component and an inductive component, because the inductive or capacitive component is in a non-DC. In the state, it has a current limiting function, so that the power supply can be supplied without unrestricted supply of short circuit power 0178-A21080TWF (N2); P05940008TW; dennis 7 1303139 flow. - Figure 2B is an embodiment of the organic light-emitting device of the present invention. As shown in the figure, the organic light-emitting device 2A includes a plurality of light-emitting units connected in parallel, and each of the light-emitting units includes one of the organic light-emitting diodes 22-1 to η and the capacitors C1 to Cn connected in series. The organic light-emitting diodes 22-1 to 22-n in the organic light-emitting device 200 are driven by a power source Vs. In the present embodiment, the power source % is a parent current voltage source or a pulse voltage source. Assuming that the organic light-emitting diode 22-2 is short-circuited, the capacitor C2 is driven by the parent current voltage source or the pulse voltage source, such as the same electrical impedance, and the current flowing through the impedance is limited to Under a certain size, it will not cause the entire system to collapse. Furthermore, at this time, the capacitor C2 can also function as an energy storage component, such as a small battery. When the voltage source is turned from a high voltage to a low voltage, the power is supplied to the other normally working organic light emitting diodes 22 i by the discharge action. 22-3 to 22-11 〇- _ 2C is another embodiment of the organic light-emitting device of the present invention. As shown in the figure, the organic light-emitting device 200C includes a plurality of light-emitting units connected in parallel, and each of the light-emitting units 7G includes one of the organic light-emitting diodes 22j to 22 in series and the inductors L1 to Lne. The organic light emitting diode system is driven by the power source %. In this embodiment, the power source force is a parent current voltage source or a pulse voltage source. ', False ▲ When the short circuit of the LED 22_2 is set, the inductor is driven by the parent current source or the pulse voltage source, like the _ electrical impedance, and the current flowing through the impedance is limited. Under the specific size, it will not cause the whole (four) reconciliation. Furthermore, at this time, the inductor L2 village piece 'when the voltage source is turned from a high voltage to a low voltage, the current source generally releases two; and the other normally working organic light-emitting diode 22 is less 22 - Μ : 0178 - A2H 8〇TWF((10),·Ρ05940008Τνν;(^ηη|·3 8 1303139 Sensor L2 can also be a human wire t a metal wiring winding, like a fuse, when subjected to short = day ''automatically form a disconnected state' can further The organic pole body 22-2 which is ineffective is separated from the other normal organic light-emitting diodes 22 1 , 22-2 to 22-n. - Figure 2D is another embodiment of the organic light-emitting device of the present invention. VII & 2 illuminating device 2 〇〇 D series includes a plurality of illuminating units connected in parallel, and the mother illuminating unit comprises one of organic light emitting diodes 22J 22 22n, one C1 〜 Cn and one inductor u 〜 connected in series Ln. The light-emitting body 22 in the organic light-emitting device is driven by the power source %. In the present embodiment, the power source Vs is an alternating current type M or a pulse type voltage: (4) when a short circuit occurs, the capacitors connected in series are = Sensing state, in an AC voltage source or a pulse voltage source Under the driving, if the same electric impedance, and the current flowing through the impedance is limited to a certain size, it will not cause the entire system. In addition, the capacitor C2 can also be used as an energy storage component. For example, when a small voltage source is turned from a high voltage to a low voltage, the electric energy is supplied to the other by the action of the discharge, and the organic light-emitting diodes 22 to 1, 22 - 3 to 22 - η are often operated. When the inductor l§ L2 can also be used as the energy storage component, when the voltage source is switched from high voltage to low voltage, the energy is released as the current source, and the organic light of the other positive f is 2 = 22", 22-3~ In addition, the 'inductor L2 system can include - metal wiring ^ and, like a fuse -, when subjected to short-circuit current, automatically form a broken circuit, and can further separate the failed organic light-emitting diode 22-2 and Other normal organic light-emitting diodes 22 1 , 22 2 22 22 η. In the present invention, since the light-emitting elements are connected in parallel, when a few partial light-emitting units fail, the performance of the entire light-emitting device will not be seriously affected. Again, because Inductive or capacitive components are non-energy-consuming components, theoretically 0178-Α21080TWF(N2); P〇5940008TW; dennis 9 1303139 does not cause additional power consumption, resulting in overheating of the display device. Figure 3A shows The structure of the organic light-emitting device of the present invention is as shown in the figure. As shown, the organic light-emitting device includes a first substrate 32, a second substrate 34, and a plurality of light-emitting units connected in parallel between the two substrates 32 and 34. 22_1 to 22_n, each of the light-emitting units 22J to 22_n includes one organic light-emitting diode 22 and one current-limiting unit 24 connected in series. In general, the first substrate 32 can be used as an upper substrate, and the second substrate 34 can be used as a lower substrate, and the first and second substrates 32 and 34 are transparent substrates, but are not limited thereto. The organic light emitting diode 22 includes a first electrode 41, a first organic transport layer 42, an organic light emitting layer 43, a second organic transport layer 44, and a second electrode 45, wherein the first organic transport layer 42 The organic light-emitting layer 43 and the second organic transport layer 44 constitute an organic stacked layer. For example, the first electrode 41 and the second electrode 45 are respectively an anode and a cathode of the organic light emitting diode 22, and the first and second organic transport layers 42 and 44 are respectively an electron transport layer and a hole. The layer is transported, but is not intended to limit the invention. The organic transport layers 42 and 44 are electron transport layers or hole transport layers which are determined by the polarity of the electrodes 41 and 45. Further, the first and second electrodes 41 and 45 may be composed of a metal conductive material, a metal oxide material, or a high molecular composite material. The current limiting unit 24 includes a resistive layer 46 disposed between the organic light emitting diode 22 and a bus bar layer 47, wherein the resistive layer 46 and the organic light emitting diode 22 are connected to the bus bar layer 47 and the first transparent substrate. A stack structure is formed between 32. All of the light-emitting units 20_1 to 20__n in the light-emitting device 300A are connected in parallel by the bus bar layer 47. For example, all of the first electrodes 41 are connected to the anode of the power source Vs, and the bus bar layer 47 is connected to the cathode of the power source Vs such that all of the light-emitting units 20_1 to 20_2 are connected in parallel with each other. In this embodiment, the impedance layer 46 can be a capacitive impedance layer 0178-A21080TWF (N2); P05940008TW; dennis 10 1303139 (capacitive impedance layer) or a capacitive component structure. For example, the resistive layer 46 may be an inorganic dielectric layer formed on the electrode 45 by sputtering or plasma enhanced chemical vapor deposition (PECVD), for example, two. Cerium oxide (SiOx). In other words, the impedance layer 46 can be an organic dielectric layer, such as polyimide, epoxy, or acrylic resin, and the molecular weight is greater than 1 〇〇〇. High molecular polymer, or for example CuPc (Copper Phthalocyanine), N, N'_bis-(l-naphthy)-N, N'diphenyM, 1 '-biphenyl-4-4'-diamine (NPB), N, N' -diphenyl-N,N'-bis(3-methyl-phenyl)-l,l '-biphenyl-4,4'-dia 1^116(丁?0), 4,4'-1^,1^' -(1;1〇31^2〇16_1^1^1134(^3?) is a small molecule polymer having a molecular weight of less than 1000. Further, the impedance layer 46 may also be an inductive impedance layer or electricity. An inductive structure, and the resistive layer 46 may comprise an organic magnetically permeable material or an inorganic magnetically permeable material, and may include a metal wiring winding having good electrical conductivity. For example, the metal wiring winding may be designed to withstand one When the short-circuit current is short, an open circuit state is automatically formed to isolate the failed organic light-emitting diode from the normal organic light-emitting diode. Figure 3B shows the present invention. Another structural schematic diagram of the organic light-emitting device. As shown, the organic light-emitting device 300B includes a substrate 32, a second substrate 34, and a plurality of light-emitting units 22_1 connected in parallel between the two substrates 32 and 34. 〜22_n, each of the light-emitting units 22-1 to 22-n includes one of the organic light-emitting diodes 22 and a current-limiting unit 24 connected in series. Generally, the first substrate 32 can serve as an upper substrate, and The second substrate 34 can be used as a lower substrate, and the first and second substrates 32 and 34 are transparent substrates, but the invention is not limited thereto. The organic light-emitting diode 22 is similar to that in the third drawing, and is not tired here. In the present embodiment, the current limiting unit 24 is disposed on the substrate 32 and includes a first conductive layer 48, a resistive layer 46, and a second conductive layer. 49 is a stacked layer in which the first conductive layer 48 of the limited current unit 24 is electrically connected to the electrode (cathode or anode) of the organic light-emitting diode 22 by means of a bonding wire. In other words, organic light II The body 22 and the current limiting unit 24 are electrically connected by a wire 23. For example, all the first electrodes 41 are connected to the positive electrode (or the negative electrode) of the power source Vs, and all the second conductive layers 49 are connected to the power source Vs. The negative electrode (or the positive electrode) is such that all of the light-emitting units 20_1 to 20_2 are connected in parallel with each other. In addition, a plurality of insulating spacers 26 are disposed between the first and second substrates 32 and 34 to partition the light emitting unit. As described in FIG. 3A, the resistive layer 46 can be a capacitive impedance layer, a capacitive structure, an inductive impedance layer, or an inductive component structure. (inductive structure), no longer described here. Fig. 3C is a schematic view showing still another structure of the organic light-emitting device of the present invention. As shown in the figure, the organic light-emitting device 300C includes a first substrate 32, a second substrate 34, and light-emitting units 22_1~22_n connected in parallel between the two substrates 32 and 34, each of the light-emitting units 22_1~22_n. The system includes an organic light-emitting diode 22 and a current limiting unit 24 connected in series. In general, the first substrate 32 can serve as an upper substrate, and the second substrate 34 can serve as a lower substrate, and the first and second substrates 32 and 34 are transparent substrates, but are not limited thereto. The organic light-emitting diode 22 is similar to that of Figure 3A and will not be described again. In this embodiment, the current limiting unit 24 is disposed on the substrate 32 and includes a stacked layer of a resistive layer 46 and a second conductive layer 49, and an electrode of the organic light emitting diode 22 (cathode or The anode 45 extends over the resistive layer 46 and forms a stacked junction 0178-A21080TWF(N2); P05940008TW; dennis 1303139 with the resistive layer 46 and the second conductive layer 49, and causes the current limiting unit 24 and the organic light emitting The diode 22 produces an electrical connection. Further, as shown, in addition to the electrode 45, the organic light-emitting diode 22 is electrically isolated from the resistive layer 46 and the conductive layer 49 of the current limiting unit 24 by the insulators 27, 28. For example, all of the first electrodes (if used as anodes) 41 are connected to the positive electrode of the power supply vs and all of the conductive layers 49 are connected to the negative pole of the power source Vs such that all of the light-emitting units 20-1 to 20J2 are mutually in parallel. As described in FIG. 3A, the impedance layer 46 can be a capacitive impedance layer, a capacitive structure, an inductive impedance layer, or an inductive component structure. (inductive structure), no longer described here. The present invention also discloses a method of fabricating an organic light-emitting device, comprising the following steps. First, an organic light emitting diode 22 is formed on a first transparent substrate, wherein the organic light emitting diode has a first electrode 41 disposed on the first transparent substrate, a second electrode 45, and an organic light emitting stacked layer ( 42 to 44) are disposed between the first and second electrodes 32 and 32. In succession, a current limiting unit 24 having a resistive layer 46 is formed for serial connection with the organic light emitting diode 22. The impedance layer 46 is formed on the second electrode 45 of the organic light emitting diode 22, as shown in FIG. 3A, or the current limiting unit 24 further includes a first conductive layer 48 disposed on the resistive layer 46. Above, and connected to the second electrode 45 of the organic light-emitting diode 22 by a bonding wire, as shown in FIG. 3B. In other words, the second electrode 45 of the organic light-emitting diode 22 extends over the impedance layer 46, so that the current limiting unit 24 and the organic light-emitting diode 22 are electrically connected, as shown in FIG. 3C. . In the foregoing steps, the impedance layer 46 can be a capacitive impedance layer 0178-A21080TWF(N2); P05940008TW; dennis 13 1303139 (capacitive impedance layer) or a capacitive component structure. For example, the resistive layer 46 can be an inorganic dielectric layer, such as cerium oxide (SiOx), and by plasma enhanced chemical vapor deposition (PECVD). ) is formed on the electrode 45. In other words, the impedance layer 46 can be an organic dielectric layer, such as polyimide, epoxy, or acrylic resin, having a molecular weight greater than 1000. a high molecular polymer, or a small molecule polymer having a molecular weight of less than 1000, such as CuPc (Copper Phthalocyanine), NPB, TPD, CBP, etc., and formed by thermal evaporation or spin coating. Above the electrode 45. In addition, the resistive layer 46 can also be an inductive impedance layer or an inductive structure, and the resistive layer 46 can be composed of an organic magnetic conductive material or an inorganic magnetic conductive material, and can include a Metal wiring windings with good electrical conductivity. For example, a metal wiring winding can be designed to withstand a short circuit current and automatically form an open state for isolating the failed organic light emitting diode from the normal organic light emitting diode. While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. 0178-A21080TWF(N2); P05940008TW; dennis 14 1303139 [Simplified Schematic] FIG. 1 shows a conventional organic light-emitting display device. Fig. 2A is a schematic view showing one of the organic light-emitting devices of the present invention. Fig. 2B is an embodiment of the organic light-emitting device of the present invention. Fig. 2C is an embodiment of the organic light-emitting device of the present invention. Fig. 2D is an embodiment of the organic light-emitting device of the present invention. Fig. 3A is a schematic view showing the structure of one of the organic light-emitting devices of the present invention. Fig. 3B is a schematic view showing still another structure of the organic light-emitting device of the present invention. 3C is a schematic structural view of the organic light-emitting device of the present invention. [Main element symbol description] 100: display device; 10: light-emitting unit;
Is :定電流源； V s :端電壓。 本發明 200A〜200D、300A〜300C :顯示裝置； 20 :發光單元； 22、22_1〜22_n :有機發光二極體； 23 :導線； 24 :限電流單元； 26 :絕緣性間隔物； 27、28 :絕緣物；Is : constant current source; V s : terminal voltage. The present invention 200A to 200D, 300A to 300C: display device; 20: light emitting unit; 22, 22_1 to 22_n: organic light emitting diode; 23: wire; 24: current limiting unit; 26: insulating spacer; : insulation;
Vs :電壓源； 0178-A21080TWF(N2)；P05940008TW；dennis 15 1303139Vs : voltage source; 0178-A21080TWF (N2); P05940008TW; dennis 15 1303139
Cl〜Cn :電容器； L1〜Ln ··電感器； 32、34 :基板； 41、 45 :電極； 42、 44 :有機傳輸層； 46 :阻抗層； 47 :匯流排層； 48、49 :導體層。 0178-A21080TWF(N2)；P05940008TW；dennis 16Cl~Cn: capacitor; L1~Ln ··inductor; 32, 34: substrate; 41, 45: electrode; 42, 44: organic transmission layer; 46: impedance layer; 47: bus bar layer; 48, 49: conductor Floor. 0178-A21080TWF(N2); P05940008TW; dennis 16