1248773 五、發明說明（1) 一— 【發明所屬之技術領域】 本發明係有關一種有機電激發光顯示器（〇LED)元件 之技術，特別是關於一種可增進元件壽命之有機電激發光 顯示器元件之結構及其封裝方法。 【先前技術】 第一圖為習知之有機電激發光顯示器元件丨0之結構， 其係在一玻璃基板1 2上先安裝有一有激發光晶片1 4，並在 惰性氣體環境下’以針筒塗佈紫外線硬化型膠或熱硬化型 膠於此玻璃基板1 2周圍上以形成一框膠1 6，並藉此將一玻 璃蓋板1 8貼設於其上，以保護元件1 〇内部不受水氣侵襲。 然因上述之玻璃盖板1 8通常為驗玻璃，會擴散出金屬 陽離子，影響框膠1 6照射紫外光或熱時聚合不完全，以致 於與玻璃的接著性變差，因此無法完全阻絕外界環境水氣 滲透進入，以致元件1 〇壽命無法達到商品需求。 先前技術針對上述問題已申請過之專利如下，請參閱 美國專利案號 596296 2之、' Method of encapsulating organic electroluminescence device and organic electroluminescence device r/ ，其提出一種封裝方法 ，在封裝過程中，將惰性、除水之油脂灌入元件内部，並 在油脂内混入吸濕材；另美國專利案號5 8 8 2 7 6 1之、、 Organic EL element"中，提出在封裝過程中，使用具 有凹槽的金屬蓋板，並在蓋板凹槽黏貼吸濕材，藉由吸濕 材吸附滲透進入元件内部的水氣，以增長元件的壽命；然 上述兩項專利，雖可有效的增長元件壽命，但常因框膠聚1248773 V. INSTRUCTION DESCRIPTION (1) A - Technical Field of the Invention The present invention relates to a technique for an organic electroluminescent display (〇LED) component, and more particularly to an organic electroluminescent display component capable of enhancing component lifetime The structure and its packaging method. [Prior Art] The first figure shows the structure of a conventional organic electroluminescent display element 丨0, which is mounted on a glass substrate 12 with an excitation light wafer 14 and a syringe under an inert gas atmosphere. Applying an ultraviolet curing adhesive or a thermosetting adhesive to the periphery of the glass substrate 1 2 to form a sealant 16 and thereby attaching a glass cover 18 thereto to protect the inside of the component 1 Invaded by moisture. However, since the above-mentioned glass cover plate 18 is usually a glass test, metal cations are diffused, which affects the polymerization of the frame glue 16 when it is irradiated with ultraviolet light or heat, so that the adhesion to the glass is deteriorated, so that the outside world cannot be completely blocked. The ambient moisture penetrates into the product, so that the life of the component 1 cannot reach the demand of the commodity. The prior art patents which have been applied to the above problems are as follows, see 'Method of encapsulating organic electroluminescence device and organic electroluminescence device r/', which proposes a packaging method which is inert during the packaging process. The degreasing grease is poured into the interior of the component, and the absorbent material is mixed into the grease; in addition, in the US Patent No. 5 8 8 2 7 6 1 , Organic EL element", it is proposed to use a groove in the packaging process. The metal cover plate is adhered to the moisture absorbing material in the groove of the cover plate, and the moisture of the inside of the component is adsorbed by the moisture absorbing material to increase the life of the component; although the above two patents can effectively increase the life of the component, Often due to the glue
第5頁 1248773 五、發明說明（2) 合硬化不完全，導致透水率甚高，並且發生蓋板脫落的現 象。 之 又為了解決水氣滲透之問題，美國專利案號5 8 1 1 1 7 7 Passivation of electroluminescent organic devices "中係提出在元件結構上鍍上一至數層惰性金屬 二^機保，膜和樹脂封蓋之保護膜，係用以完全阻絕外界 t t Τ Ϊ Γ '參透進人元件内部，然而在有機電激發光元件 :0 :，此種保護層，其處理溫度極可能傷害損傷元 ί二ί I 1較長，並不適於量產。 機電ί ί::“發：係在針對ί述之困·’提出-種有 之缺失者。 盗70件之結構及其封裝方法，以改善上述 發明内容】 本發明之主 機電激發光顯示的目的係在提供一種可提高元件壽命之有 避免水氣侵害内=凡件之結構及其封裝方法，其係可有效 本發明之另1卩兀件，以大幅提昇元件壽命。 有機電激發光_ Γ f的係在提供一種可降低框膠滲水率之 善先前技術；參4 =件之結構及其封I方*，其係可改 本發明之再t過向及蓋板脫落之問題。 之有機電激發光^=係在提供一種可增進框膠聚合完全 增進框膠與坡螭 ，、对裝方法，其係可 為達到上述之ΐί … 元件之結構，包 、，本發明係提出—種有機電激發光 ^括一設置有一有機發光 Ζ 5 &九 曰曰月之透明基板；Page 5 1248773 V. INSTRUCTIONS (2) The incomplete hardening results in a high water permeability and a peeling of the cover. In order to solve the problem of water vapor infiltration, U.S. Patent No. 5 8 1 1 1 7 7 Passivation of electroluminescent organic devices has proposed to apply one to several layers of inert metal on the component structure, membrane and resin. The protective film of the cover is used to completely block the outside tt Τ Ϊ Γ 'into the inside of the component, but in the organic electroluminescent component: 0:, this protective layer, its processing temperature is very likely to damage the damage element ί 2ί I 1 is long and not suitable for mass production. Electromechanical ί ί:: "Fa: in the case of the ridiculous · · ' ' ' ' ' ' ' ' 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 The object of the invention is to provide a structure and a packaging method thereof for improving the life of the component, which can avoid moisture and gas damage, and which can effectively improve the life of the component. Γ f is a good prior art that can reduce the water permeability of the sealant; the structure of the joint member and its seal I can be used to modify the problem of the over-travel and the cover of the present invention. The organic electroluminescence light ^= is to provide a method for improving the sealant polymerization and the frame filler and the sloping, and the method for the assembly, which can achieve the above-mentioned structure of the component, package, and the present invention The organic electroluminescence light is provided with an organic light-emitting device 5 & a nine-month transparent substrate;
第6頁 1248773 五、發明說明（3) 一透明蓋板係具一容置凹槽及至少一環設於容置凹槽周圍 之凹槽，且透明蓋板周圍表面係覆蓋至少一保護膜；並於 透明蓋板周圍之凹槽上方塗佈一框膠，使透明基板及透明 蓋板密封在一起而使容置凹槽形成一可密封該有機發光晶 片之密閉空間；以及在透明蓋板之容置凹槽内表面貼設有 至少一吸濕材。 本發明之另一實施態樣則為一種有機電激發光顯示器 元件之封裝方法，其步驟係包括提供一具有容置凹槽及環 設凹槽的透明蓋板；在透明蓋板周圍表面先鍍上至少一層 保護膜；貼設至少一吸濕材在透明蓋板之容置凹槽内表面 ，·且塗佈一框膠於透明蓋板周圍之凹槽上方，以藉框膠密 合透明蓋板及一具有有機發光晶片之透明基板；最後將透 明基板與透明蓋板進行壓合並固化框膠，以完成此封裝結 構。 底下藉由具體實施例配合所附的圖式詳加說明，當更 # 容易瞭解本發明之目的、技術内容、特點及其所達成之功 -效。 【實施方式】 第二圖為本發明之結構剖視圖，如圖所示，一有機電 激發光顯示器元件2 0之結構係包括一透明基板2 2，通常為 用透明玻璃材質者；在此透明基板22表面上設置一有機發 光晶片24 ; —透明蓋板26，其係使用玻璃材質者，請同時 ^ 參閱第三圖所示之結構，此透明蓋板2 6係具有一容置凹槽 · 2 8及至少一環設於容置凹槽2 8周圍之凹槽30，且透明蓋板Page 6 1248773 V. Description of the Invention (3) A transparent cover has a receiving recess and at least one groove disposed around the receiving recess, and the surface of the transparent cover covers at least one protective film; Applying a sealant over the groove around the transparent cover to seal the transparent substrate and the transparent cover together to form a sealed space for sealing the organic light-emitting chip; and the transparent cover The inner surface of the groove is provided with at least one moisture absorbing material. Another embodiment of the present invention is a method for packaging an organic electroluminescent display device, the method comprising the steps of: providing a transparent cover having a receiving recess and a ring groove; plating the surface around the transparent cover At least one protective film is disposed; at least one moisture absorbing material is disposed on the inner surface of the transparent groove of the transparent cover plate, and a frame glue is coated on the groove around the transparent cover plate to cover the transparent cover by the frame glue The board and a transparent substrate having an organic light-emitting chip; finally, the transparent substrate and the transparent cover are pressed and cured to form a package structure. The details of the present invention, the technical contents, the features, and the functions and effects achieved by the present invention will be better understood by the specific embodiments and the accompanying drawings. [Embodiment] The second figure is a cross-sectional view of the structure of the present invention. As shown, the structure of an organic electroluminescent display element 20 includes a transparent substrate 22, which is usually made of transparent glass; 22, an organic light-emitting chip 24 is disposed on the surface; a transparent cover plate 26 is made of glass material, please refer to the structure shown in the third figure at the same time, the transparent cover plate 6 has a receiving groove 2 8 and at least one ring 30 disposed in the groove 30 around the receiving groove 28, and a transparent cover
第7頁 1248773 五、發明說明（4) 2 6周圍表面係覆蓋至少一層保護膜（圖中未示）；一由高 分子材料所構成之框膠3 2，其係可選自紫外線硬化型膠或 是熱硬化型膠，框膠3 2係塗設於透明蓋板2 6周圍之凹槽3 0 上方，使透明基板2 2及透明蓋板2 6密封在一起而使容置凹 槽2 8形成一密閉空間，進而密封該有機發光晶片2 4 ;並在 透明蓋板2 6之容置凹槽2 8的内側表面貼設一吸濕材3 4，以 吸附少量滲透進入之水氣。 上述之保護膜之材料可選自無機氧化物或無機氮化物 ，如二氧化矽（SiOO 、氮化矽（SiNx)或氧化銦錫（ITO) ，且該透明基板2 0 2周圍表面亦可鍍上一至數層之保護 膜；而吸濕材21 4可為鹼土族金屬氧化物或硫酸鹽，如氧 化的（CaO)、氧化鋇（BaO)、氧化鎖（MgO)、硫酸經 (Li2S04)或硫酸鈣（CaS04)等材質。 第四圖為框膠的水滲透率（WVPR)對寬度之關係曲線 圖，如圖所示，當框膠寬度愈大，則水渗透率愈小，可知 框膠寬度係會影響水滲透率，因此，在本發明中塗佈於透 明蓋板周圍之框膠寬度可依需要而隨時調整，當塗佈於透 明蓋板周圍之框膠寬度愈高，則可以使得水滲透率愈低， 對元件損害愈小。 根據第三圖所示之結構，本發明亦提出一種有機電激 發光顯示器元件之封裝方法，如第五（a)圖至第五（e)圖所 示，其分別為本發明進行封裝之各步驟結構剖視圖。首先 ，如第五（a)圖所示，提供一透明蓋板26，其係具有一容 置凹槽2 8及其周圍之凹槽30，此容置凹槽2 8及凹槽3 0之形Page 7 1248773 V. Description of the invention (4) 2 6 The surrounding surface is covered with at least one protective film (not shown); a frame rubber 3 2 composed of a polymer material, which may be selected from ultraviolet curing glue Or a heat-curing adhesive, the frame glue 32 is applied over the recess 30 around the transparent cover 26, so that the transparent substrate 2 2 and the transparent cover 26 are sealed together to accommodate the recess 2 8 A sealed space is formed to seal the organic light-emitting wafer 24; and a moisture absorbing material 34 is attached to the inner surface of the recessed cover 26 of the transparent cover 26 to absorb a small amount of moisture entering the inlet. The material of the above protective film may be selected from an inorganic oxide or an inorganic nitride such as cerium oxide (SiOO, cerium nitride (SiNx) or indium tin oxide (ITO)), and the surface of the transparent substrate 20 2 may also be plated. a protective film of one or more layers; and the moisture absorbing material 21 4 may be an alkaline earth metal oxide or a sulfate such as oxidized (CaO), barium oxide (BaO), oxidized lock (MgO), sulfuric acid (Li2S04) or Calcium sulfate (CaS04) and other materials. The fourth picture shows the water permeability (WVPR) versus width of the sealant. As shown in the figure, the larger the sealant width, the smaller the water permeability. The width system affects the water permeability. Therefore, in the present invention, the width of the sealant applied around the transparent cover can be adjusted as needed. When the width of the sealant applied around the transparent cover is higher, the width can be made. The lower the water permeability, the smaller the damage to the component. According to the structure shown in the third figure, the present invention also proposes a packaging method for the organic electroluminescent display element, such as the fifth (a) to the fifth (e). Shown, respectively, is a cross-sectional view of each step of the packaging of the present invention First, as shown in the fifth (a), a transparent cover 26 is provided, which has a receiving recess 28 and a groove 30 therearound, and the receiving recess 28 and the recess 30 shape
第8頁 1248773 五、發明說明（5) 成係利用喷砂、車削、超音波鑽孔及化學蝕刻等方法加工 而成，接著於透明蓋板26周圍表面利用真空蒸鍍、濺鍍或 旋轉塗佈法鍍上一至數層保護膜（圖中未示）。 接著如第五（b)圖所示，在此容置凹槽28内表面係貼 設一層吸濕材3 4，而後如第五（c )圖所示，於透明蓋板2 6 周圍的凹槽3 0上方利用針筒塗佈圓形或矩形之紫外線硬化 型膠或熱硬化型膠以形成一框膠3 2 ;接著進行第五（d )圖 ，另外準備一透明基板2 2，其上係先安裝一有機發光晶片 2 4，並將透明蓋板2 6與此安裝有機發光晶片2 4之透明基板 22利用機械對位或光學CCD對準裝置進行對位，並藉該框 膠3 2之作用使透明蓋板2 6與透明基板2 2密合在一起，並將 其壓合及利用照射紫外線或加熱固化框膠3 2，最後形成如 第五（e )圖之有機電激發光顯示器元件2 〇之結構。 以下係藉由實驗以更加闡明本發明之特點，使用喷砂 方式將兩片鈉玻璃蓋板挖出一寬度〇5一15 mm、深度〇·：! -0.7 mm之容置凹槽及環設於該容置凹槽周圍之凹槽，其中 一片鍍上保護膜，另一片則否，將此兩片鈉玻璃蓋板與另 兩片已鑛上保護膜之玻璃基板清洗乾淨（含氧電漿處理） ’並置入氮氣循環箱内，接著將除水之氧化鋇粉末亦置入 氣氣循$箱内，然後將此氧化鋇置入鍍上保護膜的鈉玻璃 蓋板之谷置凹槽内，並在鈉玻璃蓋板四周之凹槽上利用針 筒或類似裝置塗佈1 · 0 mm或1 · 5 mm的紫外線硬化型膠，然 後覆蓋/片It上保護膜的玻璃基板，以作為實驗組；同時 ’將除水之氧化鋇粉末置入另一未鍍上保護膜之鈉玻璃蓋Page 8 1248773 V. INSTRUCTIONS (5) The system is processed by sand blasting, turning, ultrasonic drilling and chemical etching, and then vacuum-deposited, sputtered or spin-coated on the surface of the transparent cover 26. The cloth is plated with one to several protective films (not shown). Then, as shown in the fifth (b), a moisture absorbing material 34 is attached to the inner surface of the accommodating recess 28, and then a concave surface around the transparent cover 26 as shown in the fifth (c). A circular or rectangular ultraviolet-curable adhesive or a thermosetting adhesive is applied to the upper surface of the groove 30 to form a sealant 3 2; then the fifth (d) is performed, and a transparent substrate 2 2 is further prepared thereon. First, an organic light-emitting chip 24 is mounted, and the transparent cover 26 and the transparent substrate 22 on which the organic light-emitting chip 24 is mounted are aligned by a mechanical alignment or optical CCD alignment device, and the sealant 3 2 is used. The function is to make the transparent cover plate 26 and the transparent substrate 2 2 close together, press it and use the ultraviolet ray or heat to cure the sealant 3 2, and finally form the organic electroluminescent display as shown in the fifth (e). The structure of component 2 〇. In the following, by experimenting to further clarify the characteristics of the present invention, two pieces of soda glass cover are dug out by a sand blasting method to accommodate a groove and a ring having a width of 一5 to 15 mm and a depth of 〇·:! -0.7 mm. The groove around the receiving groove, one of which is plated with a protective film, and the other is not, the two soda glass cover plates are cleaned with the other two glass substrates with the protective film on the ore (oxygen plasma) Disposal] is placed in a nitrogen circulation tank, and then the water-depleted cerium oxide powder is placed in the gas-gas box, and then the cerium oxide is placed in the valley of the soda glass cover plated with the protective film. Inside, and apply a UV-curable adhesive of 1 · 0 mm or 1 · 5 mm to the groove around the soda glass cover with a syringe or the like, and then cover/film the glass substrate of the protective film on It Experimental group; at the same time 'put the dehydrated cerium oxide powder into another uncoated protective sodium glass cover
第9頁 1248773 五、發明說明（6) |板之容置凹槽内，亦在四周之凹槽上利用針筒或類似裝置 塗佈厚度為1 · 0 mm或1 · 5 mm的紫外線硬化裂膠，然後覆蓋 -片鍍上保護膜的玻璃基板，以用來作為對照組；接著在 兩組試片上方各放置負載用之2 4 8 g之玻璃，然後利用能 量密度6 J / c m 2、功率密度8 0 m W / c m的紫外線進行照射， 以及經過1 0 0 °C加熱6 0分鐘，測量試片重量（至0 · 1 mg)，並記錄之，最後將兩組試片移入溫度及濕度分別為 6 0 °C和9 5% RH之環境測試箱内，並每隔一段時間取出試 片’以記錄試片重量（至0.1 mg)。 | 上述之實驗結果顯示於第六圖所示，實線部份所示之 實驗組於鈉玻璃蓋板上鍍上保護膜之元件，增加重量遠小 |於虛線所示之對照組之未鍍上保護膜的鈉玻璃蓋板，由此 結果可知，於鈉玻璃蓋板表面鍍上保護膜，會阻隔鈉蓋板 玻璃擴散出金屬陽離子，可增加框膠之聚合程度，並降低 框膠滲水率’且使框膠與玻璃介面接著更緊密，可大幅提 昇元件壽命。 本發明係同時使用吸濕材與保護層，並結合透明蓋板 的結構設計，可有效增進框膠與玻璃間之接著性、增加框 丨Πϊίϊίΐ降低框膠之水渗透率，可提高元件壽命、 改善存在於先則技術中之該些缺點。 丨點^ ΐ: ϊ實施例僅係為說明本發明之技術思想及特 t Hi習此項技藝之人士能夠瞭解本發明之内 丨谷並據以貫施，壹不能〜r 田个此以之限定本發明之專 凡依本發明所揭示之精神所作之均等變化或修二仍應涵 第10頁 1248773 五、發明說明（7) 在本 發 明 之 專 利 範 圍 内 〇 圖號 說 明 ] 10 有 機 電 激 發 光 顯 示 器 元 件 12 玻 璃 基 板 14 有 機 發 光 晶 片 16 框 膠 18 玻 璃 蓋 板 20 有 機 電 激 發 光 顯 示 器 元 件 22 透 明 基 板 24 有 機 發 光 晶 片 26 透 明 蓋 板 28 容 置 凹 槽 30 凹 槽 32 框 膠 34 吸 濕 材Page 9 1248773 V. INSTRUCTIONS (6) |In the groove of the plate, the UV-curing crack with a thickness of 1 · 0 mm or 1 · 5 mm is also applied to the groove on the circumference by a syringe or the like. Glue, then covered - a glass substrate coated with a protective film for use as a control group; then placed 2 4 8 g of glass for loading on each of the two sets of test pieces, and then utilized an energy density of 6 J / cm 2 The UV light with a power density of 80 m W / cm was irradiated and heated at 100 ° C for 60 minutes. The weight of the test piece (to 0 · 1 mg) was measured and recorded. Finally, the two sets of test pieces were transferred to the temperature and The test piece was taken at intervals of 60 ° C and 9 5% RH and the test piece was taken at intervals to record the test piece weight (to 0.1 mg). The above experimental results are shown in the sixth figure. The experimental group shown in the solid line part is coated with a protective film on the soda glass cover to increase the weight. The uncontrolled plating of the control group shown by the dotted line The soda glass cover of the protective film, the result shows that the surface of the soda glass cover plate is coated with a protective film, which will block the diffusion of metal cations from the sodium cover glass, which can increase the polymerization degree of the sealant and reduce the water permeability of the sealant. 'And the frame glue and the glass interface are then tighter, which can greatly improve the life of the component. The invention adopts the moisture absorbing material and the protective layer at the same time, and combines the structural design of the transparent cover plate, can effectively improve the adhesion between the frame glue and the glass, increase the water permeability of the frame glue, and improve the life of the component. Improve these shortcomings that exist in the prior art. ^ ΐ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; Display element 12 Glass substrate 14 Organic light-emitting chip 16 Frame glue 18 Glass cover 20 Organic electro-optic display element 22 Transparent substrate 24 Organic light-emitting chip 26 Transparent cover 28 accommodating groove 30 Groove 32 Frame glue 34 Absorbent material
第11頁 1248773 圖式簡單說明 第一圖係為先前技術之結構剖視圖。 第二圖係為本發明之結構剖視圖。 第三圖係為本發明使用之蓋板的俯視圖及側視圖。 第四圖係為框膠的水滲透率與寬度之關係曲線圖。 第五（a )圖至第5 ( e )圖係為本發明於進行封裝之各步驟結 構剖視圖。 第六圖為本發明與對照組在使用三種UV硬化膠之情況下進 行溼度測試之實驗結果示意圖。Page 11 1248773 BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a cross-sectional view of the prior art. The second drawing is a cross-sectional view of the structure of the present invention. The third drawing is a plan view and a side view of the cover plate used in the present invention. The fourth graph is a plot of water permeability versus width for the sealant. The fifth (a) through the fifth (e) are sectional views of the steps of the present invention for performing the packaging. Fig. 6 is a schematic view showing the results of experiments conducted by the present invention and the control group under the conditions of using three kinds of UV hardening glues.
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