1286447 96-3-20 17927twfl.doc/006 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種發光裝置及電極基板，特別關 於一種頂面發光之有機發光裝置及電極基板。 【先前技術】 有機發光裝置（Organic Electroluminescent Device)係一種利用有機官能性材料（〇rganic functional materials)之自發光特性來達到顯 示效果的元件，其可依照有機官能性材料的 分子量不同分為小分子有機發光裝置（small molecule 〇LED，SM-0LED)與高分子有機發 光裝置（polymer light-emitting device，PLED) 兩大類。有機發光裝置以其自發光、無視角、省電、 製程容易、成本低、高應答速度以及全彩化等優 點’使有機發光裝置具有極大的應用潛力，可望成 為下一代的平面顯示器。 如圖1所示，習知有機發光裝置丨係包括一基板 U、一第一電極12、一有機官能層13、一第二電 極14以及一輔助電極15。當施以一直流電流:有 機發光裝置1時，電洞與電子係分別由第一電極12 與第二電極14注入有機官能層13，此時，由於外 加電場所造成的電位差，使得載子在有機官能層13 中移動、相遇而產生再結合，而由電子與電洞結合 所產生的激子（exciton)能夠激發有機官能層13 中的發光分子，然後激發態的發光分子以光的θ形式 釋放出能量。於此，有機官能層13的發光色度係 1286447 17927twfl .doc/006 96-3 - 20 依照材料基態和激發態之間的能階差而有所不 同。另外，辅助電極1 5的設置係用以增加第二電 極14的導電度。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-emitting device and an electrode substrate, and more particularly to a top-emitting organic light-emitting device and an electrode substrate. [Prior Art] An organic electroluminescent device is an element that utilizes the self-luminous properties of 〇rganic functional materials to achieve a display effect, which can be classified into small molecules according to the molecular weight of the organic functional material. There are two types of organic light-emitting devices (small molecule 〇LED, SM-0LED) and polymer light-emitting devices (PLED). The organic light-emitting device has an excellent application potential due to its self-luminous, non-viewing, power saving, easy process, low cost, high response speed, and full coloring, and is expected to become a next-generation flat panel display. As shown in FIG. 1, a conventional organic light-emitting device includes a substrate U, a first electrode 12, an organic functional layer 13, a second electrode 14, and an auxiliary electrode 15. When a DC current is applied to the organic light-emitting device 1, the hole and the electron system are injected into the organic functional layer 13 by the first electrode 12 and the second electrode 14, respectively. At this time, the potential difference caused by the applied electric field causes the carrier to be The organic functional layer 13 moves and meets to recombine, and an exciton generated by the combination of electrons and holes can excite the luminescent molecules in the organic functional layer 13, and then the excited luminescent molecules are in the form of light θ. Release energy. Here, the luminosity of the organic functional layer 13 is 1286447 17927 twfl.doc/006 96-3 - 20 varies depending on the energy level difference between the ground state and the excited state of the material. In addition, the auxiliary electrode 15 is arranged to increase the conductivity of the second electrode 14.
當有機發光裝置1為頂面發光時，第二電極14的 厚度必須小於100人以增加透光的效率。然而，當 第=電極14的厚度小於100A時，容易產生不連^ 的電極表面，而導致第二電極14之電阻值升高以 及電子注入效率的下降。為解決此一問題，目前的 技術係藉助辅助電極15以提高第二電極14的導電 效率以及降低有機發光裝置丨的操作電壓值i然 而，目别的解決方法具有下列兩項缺點：（丨）由於有 機發光裝置1為頂面發光，所以設置於頂面的辅助 電極15會降低晝素的開口率；（2)由於辅助電極15 係利用光罩（mask)沉積於第二電極14上，為了製造 高，析度的有機發光裝置丨，.辅助電極15的尺 必知相對縮小，然而目前的技術若要將光罩的孔洞 縮成相對應的尺寸有其困難度，同時花費亦高，且 若輔助電極15的尺寸太細，亦無法有效增加導電 為解決目前技術上的瓶頸，本發明亟思一種可以 解決此項課題之「有機發光裝置及電極基板」， 經研究實驗終至完成此項嘉惠世人之發明。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種有 發光裝置及電極基板，其巾輔助電極係設置於有機 官能層下方而不會影響畫素之開口率。 5 1286447 17927twfl.doc/〇〇6 96-3-20 光j上逑目的’依據本發明之—種有機發 一 ^一 ★、序包含一基板、一輔助電極、一絕緣層、 2 —電極、至少一有機官能層以及一第二電極，When the organic light-emitting device 1 is illuminated on the top surface, the thickness of the second electrode 14 must be less than 100 to increase the efficiency of light transmission. However, when the thickness of the first electrode 14 is less than 100 A, the surface of the electrode which is not connected is easily generated, resulting in an increase in the resistance value of the second electrode 14 and a decrease in the efficiency of electron injection. In order to solve this problem, the current technology utilizes the auxiliary electrode 15 to increase the conduction efficiency of the second electrode 14 and to lower the operating voltage value of the organic light-emitting device. However, the objective solution has the following two disadvantages: (丨) Since the organic light-emitting device 1 is a top surface light-emitting device, the auxiliary electrode 15 disposed on the top surface reduces the aperture ratio of the halogen; and (2) the auxiliary electrode 15 is deposited on the second electrode 14 by using a mask, in order to In the manufacture of a high-resolution, organic light-emitting device, the scale of the auxiliary electrode 15 must be relatively reduced. However, the current technology is difficult to reduce the size of the mask to a corresponding size, and the cost is high. If the size of the auxiliary electrode 15 is too small, and the conduction cannot be effectively increased to solve the bottleneck of the prior art, the present invention contemplates an "organic light-emitting device and an electrode substrate" which can solve the problem, and the research is completed to complete the project. The invention of the Jiahui world. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a light-emitting device and an electrode substrate in which a towel auxiliary electrode is disposed under an organic functional layer without affecting an aperture ratio of a pixel. 5 1286447 17927twfl.doc/〇〇6 96-3-20 On the light j, the organic light-emitting device according to the present invention comprises a substrate, an auxiliary electrode, an insulating layer, a 2-electrode, At least one organic functional layer and a second electrode,
:，至少一部分之第二電極係與輔助電極相接 合0 X 為達上述目的’依據本發明之—種電極基板，依 包3基板、一辅助電極、一絕緣層以及一電極。 承上所述，本發明之有機發光裝置及電極基板， 其中輔助電極係設置於有機官能層之下方。與習知 ^術相比，由於本發明之輔助電極係設置於有機官 月b層之下方，是以當發光方向為頂面發光時，輔助 電極的設置並不會影響到晝素的開口率。另外，輔 助電極的設置面積亦無需配合畫素的尺寸，是以當 晝素的尺寸縮小時，沉積輔助電極之用的光罩無^ 改變設計，且辅助電極亦可具有較大的設置面&而 可以大幅增加導電性與電流承載能力。 、 【實施方式】 以下將參照相關圖式，說明依據本發較 例之有機發光裝置及電極基板。 ' 為方便說明，以下係以但不限定為頂面發光之有 機發光裝置為例。 第一實施例 如圖2所示，依據本發明第一實施例之有機發光 裝置2，依序包含一基板21、一輔助電極22、一絕 緣層23、一第一電極24、一有機官能層25以及一 1286447 17927twfl.doc/006 96-3-20 第二電極26，其中，至少一部分之第二電極26係 與輔助電極22相接合。 於本實施例中，基板21可以是柔性（flexible )基 板或是剛性（rigid)基板。同時，基板21亦可以 是塑膠（plastic )基板或是玻璃基板。其中，柔性 基板與塑膠基板可為聚礙酸酯（polycarbonate，PC ) 基板、聚酯（polyester, PET)基板、環稀共聚物 (cyclic olefin copolymer，C0C)基板或金屬鉻合物 基材一環烯共聚物（metallocene-based cyclic olefin copolymer, mCOC )基板。另外，基板21亦可以是 $夕基板。 另外，如圖2所示，輔助電極22係形成於基板21 之上。其中，輔助電極22材質可為導電物質或導 電之金屬氧化物，其中導電之金屬氧化物係選自銦 錫氧化物（ITO )、鋁鋅氧化物（AZO )、銦鋅氧化 物（IZO)及鎘錫氧化物（CdSnO)至少其中之一，其 中導電物質係選自鋁、鈣、鎂、銦、錫、錳、鉻、 銅、銀、金及其合金至少其中之一，含鎂之合金包 括但不限定為鎂銀合金、鎮銦合金、鎂錫合金、鎂 銻合金及鎮蹄合金。於此，輔助電極22係用以增 加第二電極26的導電性與電流承載能力。 再者，如圖2所示，本實施例之絕緣層23係設置 於輔助電極22之上，用以防止輔助電極22與第一 電極24相接觸而短路，絕緣層23材質係為不導電 1286447 物質，例如但不限定為氧化矽、氮化矽、氮氧化矽、 類鑽石薄膜（diamond_like carbon)、硫化鋅（ZnS)、 硫化硒（ZnSe)或聚亞醯胺（p〇iyimide)。 第一電極24通常作為陽極且其材質可為導電物質 或導電之金屬氧化物，其中導電之金屬氧化物係選 自銦錫氧化物、鋁鋅氧化物、銦鋅氧化物及鎘錫氧 化物至少其中之一，其中導電物質係選自鋁、鈣、 鎂、銦、錫、錳、鉻、銅、銀、金及其合金至少其 中之一，含鎂之合金包括但不限定為鎂銀合金、鎂 銦合金、鎂錫合金、鎂銻合金及鎂碌合金。 另外’有機官能層25通常包含一電洞注入層、一 電洞傳遞層、一發光層、一電子傳遞層以及一電子 注入層（圖中未顯示）。其中，有機官能層25係利 用蒸鍍（evaporation)、旋轉塗佈（spinc〇ating)、 喷墨印刷（ink jet printing)、移轉（transfer)或是印 刷（printing)等方式形成於第一電極24上。此外， 有機官能層25所發射的光線可為藍光、綠光、紅 光、白光、其他的單色光或單色光組合成之彩色光1 第二電極26係可透光，其通常作為陰極且材質可 為導電物質或導電之金屬氧化物，其中導電之金屬 氧化物係選自銦錫氧化物、鋁鋅氧化物、銦辞氧化 物及锡錫氧化物至少其中之一，其中導電物質係選 自鋁、鈣、鎂、錮、錫、錳、鉻、銅、銀、金及其 合金’含鎂之合金包括但不限定為鎂銀合金Y鎂鋼 1286447 17927twfl .doc/006 96-3-20 合金、鎂錫合金、 Μ亦可作為陰極，而口 ：及鎂碲合金。第—電極 而弟二電極26則作為陽極 另外，如圖3所干 ,^ 更包含—保護層27^1係機發光裝置2 極22之間。於此，保護層除^21與輔助電 的效果之外，亦可且 ，、了，、有防水氣入侵 質係為不導電物質:、：：緣的功效’保護層27材 矽、C例但不限定為氧化矽、氮化 亞醯胺。 、瓜化鋅、硫化硒或聚 於本實施例中’因為輔 官能層25之下古^ 私位以係汉置於有機 光由第二電極26古：以虽有機官能層25所發出的 位置以及面浐大丨廿射出時’辅助電極22的設置 電極22 不會影響光的路徑，是以辅助 以及形狀知實際需求來設計所設置的面積大小 弟一實施例 例^圖4與圖5所示’依據本發明第二實施 種^極基板3依序包含—基板3卜—輔助電 杜32、一絕緣層33以及一電極34。 如圖5所示，本實施例之電極基板3更包含保護 曰者係設置於基板31與辅助電極32之間。 帝本只施例之基板31、輔助電極32、絕緣層33、 私極34以及保護層35的特徵與功能皆與第一實施 例之相同元件相同，在此不再贅述。 承上所述，本發明之有機發光裝置及電極基板， 1286447 17927twfl.doc/006 96-3-20 極係設置於有機官能層之下方。與習知 由，本發明之辅助電極係設置於有機官 、’，疋以當發光方向為頂面發光時，辅助 亚不會影響到晝素的開口率。另外，辅 置面積亦無需配合晝素的尺寸，是以各 縮小時，沉積辅助電極之用的光罩 且辅助電極亦可具有較大的設置面積， 導電性與電流承载能力。 其中辅助電 技術相比， 能層之下方 電極的設置 助電極的設 晝素的尺寸 改變設計， 可大幅增加 π μ僅為舉例性，而非為限制性者。任何未 2本發明之料與㈣，而對其進狀等效修改 $ ^:更，均應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1為-示意圖，顯示習知之有機發光二極體； 圖2為一示意圖，顯示依本發明第一實施例之 機發光裝置； 顯示依本發明第一實施例之 圖3為另一示意圖， 有機發光裝置； 圖4為一示意圖，顯示依本發明第二實施例之電 極基板；以及 ^ 5為另-不意圖，顯示依本發明 電極基板。 、 元件符號說明： 1有機發光裝置 11基板 12第一電極 13有機官能層 10 1286447 17927twfl.doc/006 14第二電極 15輔助電極 2有機發光裝置 21基板 22輔助電極 23絕緣層 24第一電極 25有機官能層 26第二電極 27保護層 3電極基板 31基板 3 2輔助電極 33絕緣層 34電極 35保護層: at least a portion of the second electrode system is coupled to the auxiliary electrode. X X is an electrode substrate according to the present invention, which comprises a substrate, an auxiliary electrode, an insulating layer and an electrode. According to the above, the organic light-emitting device and the electrode substrate of the present invention, wherein the auxiliary electrode is disposed under the organic functional layer. Compared with the conventional technique, since the auxiliary electrode of the present invention is disposed under the organic layer b layer, when the light emitting direction is the top surface, the setting of the auxiliary electrode does not affect the aperture ratio of the halogen. . In addition, the setting area of the auxiliary electrode does not need to match the size of the pixel, so that when the size of the halogen is reduced, the mask for depositing the auxiliary electrode is not changed, and the auxiliary electrode can also have a larger setting surface & And can greatly increase the conductivity and current carrying capacity. [Embodiment] Hereinafter, an organic light-emitting device and an electrode substrate according to a comparative example of the present invention will be described with reference to the related drawings. For convenience of explanation, the following is an example of an organic light-emitting device that is not limited to the top surface illumination. The first embodiment, as shown in FIG. 2, the organic light-emitting device 2 according to the first embodiment of the present invention includes a substrate 21, an auxiliary electrode 22, an insulating layer 23, a first electrode 24, and an organic functional layer 25. And a second electrode 26, wherein at least a portion of the second electrode 26 is bonded to the auxiliary electrode 22. In this embodiment, the substrate 21 may be a flexible substrate or a rigid substrate. Meanwhile, the substrate 21 may be a plastic substrate or a glass substrate. The flexible substrate and the plastic substrate may be a polycarbonate (PC) substrate, a polyester (PET) substrate, a cyclic olefin copolymer (C0C) substrate or a metal chromium composite substrate-cycloolefin. Metallocene-based cyclic olefin copolymer (mCOC) substrate. In addition, the substrate 21 may also be a substrate. Further, as shown in FIG. 2, the auxiliary electrode 22 is formed on the substrate 21. The auxiliary electrode 22 may be made of a conductive material or a conductive metal oxide, wherein the conductive metal oxide is selected from the group consisting of indium tin oxide (ITO), aluminum zinc oxide (AZO), and indium zinc oxide (IZO). At least one of cadmium tin oxide (CdSnO), wherein the conductive material is selected from at least one of aluminum, calcium, magnesium, indium, tin, manganese, chromium, copper, silver, gold, and alloys thereof, and the magnesium-containing alloy includes However, it is not limited to a magnesium-silver alloy, a town-indium alloy, a magnesium-tin alloy, a magnesium-niobium alloy, and a hoof alloy. Here, the auxiliary electrode 22 is for increasing the conductivity and current carrying capacity of the second electrode 26. Furthermore, as shown in FIG. 2, the insulating layer 23 of the present embodiment is disposed on the auxiliary electrode 22 to prevent the auxiliary electrode 22 from being short-circuited by contacting the first electrode 24, and the insulating layer 23 is made of non-conductive 1286447. Substances such as, but not limited to, cerium oxide, cerium nitride, cerium oxynitride, diamond-like carbon, zinc sulfide (ZnS), selenium sulfide (ZnSe) or polydecylamine (p〇iyimide). The first electrode 24 is generally used as an anode and may be made of a conductive material or a conductive metal oxide, wherein the conductive metal oxide is selected from the group consisting of indium tin oxide, aluminum zinc oxide, indium zinc oxide, and cadmium tin oxide. One of the conductive materials selected from at least one of aluminum, calcium, magnesium, indium, tin, manganese, chromium, copper, silver, gold, and alloys thereof, including but not limited to magnesium-silver alloys, Magnesium indium alloy, magnesium tin alloy, magnesium bismuth alloy and magnesium alloy. Further, the organic functional layer 25 usually comprises a hole injection layer, a hole transfer layer, a light-emitting layer, an electron transport layer, and an electron injection layer (not shown). The organic functional layer 25 is formed on the first electrode by evaporation, spin coating, ink jet printing, transfer, or printing. 24 on. In addition, the light emitted by the organic functional layer 25 may be blue light, green light, red light, white light, other monochromatic light or monochromatic light combined with colored light. The second electrode 26 is transparent, which is generally used as a cathode. The material may be a conductive material or a conductive metal oxide, wherein the conductive metal oxide is selected from at least one of indium tin oxide, aluminum zinc oxide, indium oxide and tin tin oxide, wherein the conductive material is Selected from aluminum, calcium, magnesium, strontium, tin, manganese, chromium, copper, silver, gold and their alloys. Magnesium-containing alloys include but are not limited to magnesium-silver alloys Y-magnesium steel 1286447 17927twfl .doc/006 96-3- 20 alloys, magnesium-tin alloys, tantalum can also be used as the cathode, and the mouth: and magnesium-bismuth alloy. The first electrode and the second electrode 26 serve as anodes. Further, as shown in Fig. 3, the protective layer 27^1 is disposed between the poles 22 of the illuminating device. Herein, in addition to the effect of the ^21 and the auxiliary electric power, the protective layer may also be incompatible with the waterproof gas intrusion into the non-conductive substance::: the effect of the edge 'protective layer 27 material 矽, C case However, it is not limited to cerium oxide or cerium nitride. Zinc ZnZ, selenium sulfide or polycondensation in the present embodiment 'because the co-functional layer 25 is under the guise of the organic layer, the organic light is placed by the second electrode 26: the position emitted by the organic functional layer 25 And when the 浐 浐 丨廿 ' ' ' ' ' ' ' ' ' 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助 辅助According to the second embodiment of the present invention, the electrode substrate 3 includes, in order, a substrate 3, an auxiliary capacitor 32, an insulating layer 33, and an electrode 34. As shown in Fig. 5, the electrode substrate 3 of the present embodiment further includes a protective layer disposed between the substrate 31 and the auxiliary electrode 32. The features and functions of the substrate 31, the auxiliary electrode 32, the insulating layer 33, the private electrode 34, and the protective layer 35 of the present embodiment are the same as those of the first embodiment, and will not be described herein. As described above, the organic light-emitting device and the electrode substrate of the present invention, 1286447 17927 twfl.doc/006 96-3-20, are disposed below the organic functional layer. Conventionally, the auxiliary electrode of the present invention is disposed on the organic body, and the auxiliary layer does not affect the aperture ratio of the halogen when the light-emitting direction is the top surface. In addition, the auxiliary area does not need to match the size of the halogen, and is a mask for depositing the auxiliary electrode when each is reduced, and the auxiliary electrode can also have a large installation area, conductivity and current carrying capacity. Among them, the auxiliary electrode technology is different from the setting of the lower electrode of the energy layer. The size of the electrode of the auxiliary electrode is changed, and the π μ can be greatly increased by way of example only, not by way of limitation. Any material that does not have 2 inventions and (4), and its equivalent modification $ ^: is included in the scope of the appended patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a conventional organic light emitting diode; FIG. 2 is a schematic view showing a light emitting device according to a first embodiment of the present invention; showing a first embodiment according to the present invention; 3 is another schematic diagram of an organic light-emitting device; FIG. 4 is a schematic view showing an electrode substrate according to a second embodiment of the present invention; and FIG. 5 is another, not intended, showing an electrode substrate according to the present invention. DESCRIPTION OF REFERENCE NUMERALS 1 organic light-emitting device 11 substrate 12 first electrode 13 organic functional layer 10 1286447 17927 twfl.doc/006 14 second electrode 15 auxiliary electrode 2 organic light-emitting device 21 substrate 22 auxiliary electrode 23 insulating layer 24 first electrode 25 Organic functional layer 26 second electrode 27 protective layer 3 electrode substrate 31 substrate 3 2 auxiliary electrode 33 insulating layer 34 electrode 35 protective layer
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