582188 五、發明說明（l) 【發明所屬之技術領域】 本發明係有關一種增加對比度之旋光性電激發光元件 及其製造方法，尤指一種藉由發光層螺旋平行結構搭配圓 偏光板，以增加對比度，減少能量損耗。 【先前技術】 ' ^知’隨著資訊科技產業近年來爆炸性的成長，多媒 ::應用也變的普及’力D上數位化的需求顯示器身居各 ::矾產品與使用者資間重要的媒介，其重要性與功能性 的;皮二：T t ’因此各種大小吸吋的新興技術，也就不斷 的被開發出來。以往CRT由於Η丄 成本/功能比優越等特色，因；：可顯示彩色動態影像且 合、無線通訊技術進步帶：；以：Γ像和資：：融 全球數位電視播放帶動大：：攜產品的更上層樓、 方面的變化，繼Τ之後，=、:畫質電視的興起等環境 器（PDP)、場發射顯示曰;1不'(LCD)、電衆顯示 FED)、有機EL 等各種平面？ _eld Eission Display ; 崛起。 面^不器（FPD)因應市場需求迅速 其中，有機電激發光元件 的顯示技術之―，其優異丄(EL)彳說是當今最為熱門 廣視角、輕薄、成本特性（自發光 '低耗電、 皆符合了新-代顯示号所：：：）、較低的投入資金在在 Resource所發表的研究==備的條件，根據Stanford 件的市值僅3百萬| - 〇曰，1 9 9 9年有機電激發光元 萬美7"，但是估計三年後，則可望成長至2 582188 五、發明說明（2) 一------- 億美兀，到了 20 0 5年估計市場產值將達到？· η億美 此我們可以清楚未來有機電激發光元件;：, 以一年一倍的速度增加。 取食性戎手疋 有機電激發光元件的發光原理和發光二極體的發光 理相似，同樣考利用材料的特性，將電子電洞在發‘層工 結合’而將電子由激發態的形式降回基態，而將多餘二能 量以電磁波的形式釋出，因而達到有不同波長的發光元件 的產生。，基本的結構圖如第1圖所示，有機電激發光元 件（EL )是利用在二個電極間分別注入電子及電洞，並利 用有機分子的激發，而達到發光的功能。其中陽極（An〇 de ) 12為ITO導電玻璃膜，以濺鍍或蒸鍍方式，附著於玻 璃或透明塑膠基板11上，陰極17則含有鎂（Mg )、鋁（A1 )、裡（L i )等金屬。在二個電極間則是多個有機薄膜形 成的發光區域’包含電洞注入層13 (Hole Injecti〇n Uy er;HIL)、電洞傳遞層 14 (Hole Transport Layer;HTL) 、發光層1 5 ( Emit ting Layer )及電子傳遞層1 6( E lect ron Transport Layer ;ETL)，在實際量產時，考慮不同需 求，有時還會包含其他不同薄膜。 然而’電激發光元件在應用上，由於其陰極為金屬， 故其顯示面板在戶外等較亮環境下會有陰極反光干擾的情 形’一般解決的方法是利用不反光的陰極（black cat ho de)或是吸收光線之塗佈層（black layer)亦或是在元 件上層製作產生圓偏光之圓偏光板解決。 請參閱「第2圖所示」，係習知之圓偏光板作動示意582188 V. Description of the invention (l) [Technical field to which the invention belongs] The present invention relates to an optically active electrical excitation light element with increased contrast and a method for manufacturing the same, especially a spirally parallel structure with a light-emitting layer and a circular polarizer. Increase contrast and reduce energy loss. [Prior technology] With the explosive growth of the information technology industry in recent years, the media :: applications have also become popular. The demand for digitalization on the Force D is diverse: :: alum products are important with user capital The medium is important and functional; Pi 2: T t 'Therefore, emerging technologies of various sizes are constantly being developed. In the past, CRTs have advantages such as superior cost / function ratio, etc. :: can display color dynamic images and integrate, wireless communication technology advances :; with: Γ image and capital :: integrate digital TV broadcast worldwide to drive big :: bring products The next level, changes in aspects, following T, = ,: the rise of picture-quality television, such as environmental devices (PDP), field emission display; 1 no (LCD), TV display FED), organic EL and other various flat? _eld Eission Display; Rise. Face-to-face device (FPD) responds quickly to market demand. Among them, organic electro-active display devices display technology, its excellent (EL) is said to be the most popular wide viewing angle, thin, cost-effective (self-luminous' low power consumption) , All meet the new-generation display number :: :), lower investment funds in the research published in Resource == conditions, according to the market value of Stanford pieces only 3 million |-〇, 1 9 9 9 years of organic electricity excited light million million US 7 ", but it is estimated that after three years, it is expected to grow to 2 582 188 V. Description of the invention (2) I ------- billion US dollars, the estimated market in 2005 Will the output value be reached? · Η billion US This we can know the future organic electro-optical excitation light elements;:, increase at a rate of doubled a year. The light-emitting principle of the predatory organic electro-excitation light-emitting element is similar to that of the light-emitting diode. In the same way, the characteristics of the material are used to combine the electron holes in the layer structure and the electrons are excited. Fall back to the ground state, and release the excess two energy in the form of electromagnetic waves, thus achieving the generation of light-emitting elements with different wavelengths. The basic structure diagram is shown in Figure 1. The organic electro-excitation light-emitting element (EL) achieves the function of emitting light by injecting electrons and holes between the two electrodes and using the excitation of organic molecules. The anode 12 is an ITO conductive glass film, which is attached to a glass or transparent plastic substrate 11 by sputtering or evaporation. The cathode 17 contains magnesium (Mg), aluminum (A1), and lining (L i ) And other metals. Between the two electrodes is a light-emitting region formed by a plurality of organic thin films' including a hole injection layer 13 (Hole Injection Uyer; HIL), a hole transport layer 14 (HTL), and a light-emitting layer 1 5 (Emitting Layer) and Electron Transport Layer (ETL) 16 (ETL), in actual mass production, considering different needs, sometimes also include other different films. However, in the application of the electro-active light-emitting element, because the cathode is a metal, the display panel may have a cathodic reflection interference in a bright environment such as outdoors. The general solution is to use a non-reflective cathode (black cat ho de ) Either a black layer that absorbs light or a circularly polarizing plate that produces circularly polarized light on the element. Please refer to "shown in Figure 2" for the operation of the conventional circular polarizer
582188 五、發明說明（3) 圖。如圖所示··當無偏極化之外部光線21，入射至吸收左 旋光之圓偏光板時，其左旋光會被吸收而僅餘右旋光2 2穿 透’該右旋光22經陰極1 9反射而轉換為左旋光23，則該左 旋光23又為圓偏光板1 8所吸收，如是完全消除電教發光元 件之顯示面板反光問題，但是，由於產生圓偏光之^偏光 板1 8會吸收入射光其中一個方向之圓偏光，因此電激發光 元件所發出之光線24亦會被吸收50%，而僅餘右旋光射 出，大幅減少能量使用效率。 【發明内容】 爰是，本發明之主要目的，在於解決上述傳統之缺 ，避免缺失存在，本發明藉由將發光層回火排列成螺广、， 行結構’並於基板一側貼設有圓偏光板，俾增加對，、二平 能量使用效率。 度及 為達上述之目的，本發明之增加對比度之旋光 發光兀件及其製造方法，係由一圓偏光板、一基板、一， 極、一電洞傳遞層、一發光層及一陰極所組成，當陽 線入射時，藉由該圓偏光板可吸收其中一個方向^部光 (左旋光或右旋光），以降低電激發光元件之反光偏光 俾增加對比度；另，電激發光元件所自發之光線擾， 光層之螺旋平行結構，可偏極為特定之圓偏光（^邊發 右旋光），藉以完全穿透該圓偏光板，而不致=光或 用效率。 X夕吨量使 【實施方式】 兹有關本發明之詳細内容及技術說明，現配合圖式說582188 V. Description of the invention (3) Figure. As shown in the figure ... When the unpolarized external light 21 is incident on a circularly polarizing plate that absorbs left-handed light, its left-handed light is absorbed and only the left-handed light 2 2 penetrates through the right-handed light 22 The cathode 19 is reflected and converted into left-handed light 23, and the left-handed light 23 is absorbed by the circularly polarizing plate 18. If the reflection problem of the display panel of the electro-education light-emitting element is completely eliminated, the circularly polarized ^ polarizing plate 18 is generated. It will absorb circularly polarized light in one direction of the incident light, so the light 24 emitted by the electrically excited light element will also be absorbed by 50%, and only the left-handed light will be emitted, which greatly reduces the energy use efficiency. [Summary of the Invention] The main purpose of the present invention is to solve the above-mentioned traditional defects and to avoid the existence of the defects. The present invention arranges the light-emitting layers into a spiral structure, and arranges them on the substrate side. Circular polarizers increase the efficiency of energy use. In order to achieve the above-mentioned object, the light-converting light-emitting element for increasing contrast of the present invention and a manufacturing method thereof are composed of a circular polarizing plate, a substrate, a pole, a hole transfer layer, a light-emitting layer, and a cathode. When the sun line is incident, the circularly polarizing plate can absorb ^ part of the light (left-handed or right-handed light) in one direction, so as to reduce the polarized light reflection of the electro-active light element and increase the contrast; The light is turbulent and the helical parallel structure of the light layer can polarize a very specific circularly polarized light (right-handed light on the ^ side), so as to completely penetrate the circularly polarizing plate without causing light or efficiency. X ton volume [Embodiment] With regard to the detailed content and technical description of the present invention, it is explained with the drawings
第7頁 582188 ^_—---一 -—--——-— 五、發明說明（4) 明如下： [圖式簡單說明】 第1圖，係習知電激發光元件結構示意圖。 第2圖，係習知之圓偏光板作動示意圖。 第3圖，係本發明之結構示意圖。 第4圖，係本發明之製造方法流程圖。 請參閱「第3圖所示」，係本發明之結構示意圖。如 圖所示：本發明之增加對比度之旋光性電激發光元件，係 由〆圓偏光板31、一基板32、〆㈣極33、一電洞傳遞層34 發光層3 5及一陰極3 6所組成。 上述之圓偏光板3 1，係用以吸收其中一個方向之圓偏 光，如左旋光或右旋光； 該基板3 2，係貼設於該圓偏光板3 1上，可為玻璃基板 或透明塑膠基板； 該陽極3 3 (Anode )，係為ITO導電玻璃膜，以濺鍍或 蒸鍍方式，附著於該基板3 2上； 該電洞傳遞層 34 (Hole Transport Layer;HTL)，其 厚度為40至80 nm ’係塗佈於該1¼極33 (Anode )上並予配 向，電洞傳輸層之設置用以增加電激發光元件之發光效率 ，而配向的目的係再利用此電洞傳輸層排列發光層材料， 以造成可發出圓偏極化光之螺旋平行排列； 該發光層35 (Emitting Layer)，其厚度為10至4〇nm ’為一種具有旋光性之共軛高分子聚合物。 5亥發光層3 5係塗佈於該電洞傳遞層3 4上，並藉由回火程序Page 7 582188 ^ _----------- --- 5. Explanation of the invention (4) The description is as follows: [Simplified illustration of the figure] Figure 1 is a schematic diagram of the structure of a conventional electrical excitation light element. Fig. 2 is a schematic diagram of a conventional circular polarizing plate operation. Fig. 3 is a structural schematic diagram of the present invention. FIG. 4 is a flowchart of the manufacturing method of the present invention. Please refer to "shown in Fig. 3", which is a structural diagram of the present invention. As shown in the figure, the optically active optically-excited optical element with increased contrast of the present invention is composed of a circularly polarized plate 31, a substrate 32, a pole 33, a hole transfer layer 34, a light-emitting layer 35, and a cathode 3 6 Composed of. The above-mentioned circularly polarizing plate 31 is used to absorb circularly polarized light in one direction, such as left-handed light or right-handed light; the substrate 3 2 is attached to the circularly polarizing plate 31, which may be a glass substrate or transparent Plastic substrate; the anode 3 3 (Anode) is an ITO conductive glass film, and is attached to the substrate 3 2 by sputtering or evaporation; the hole transport layer 34 (HTL) has a thickness For 40 to 80 nm, it is coated on the 1¼ pole 33 (Anode) and aligned. The hole transmission layer is set to increase the luminous efficiency of the electro-excitation light element, and the purpose of alignment is to use this hole for transmission. The light-emitting layer material is arranged in layers to create a spiral parallel arrangement that can emit circularly polarized light. The light-emitting layer 35 (Emitting Layer) has a thickness of 10 to 40 nm. 'It is a conjugated polymer with optical rotation. . The light-emitting layer 35 is coated on the hole-transporting layer 34, and is subjected to a tempering process.
582188 五、發明說明（5) 而排列成螺旋平行（PLANER )結構； 該陰極36，係設於該發光層35上，含有鎂（Mg )、鋁 (A1 )、鋰（Li )等金屬； 當外部光線入射時，藉由該圓偏光板可吸收其中一個 方向之圓偏光（左旋光或右旋光），以降低電激發光元件 之反光干擾，俾增加對比度；另，電激發光元件所自發之 光線藉由該發光層35之螺旋平行結構，可偏極為特定之圓 偏光（左旋光或右旋光），藉以完全穿透該圓偏光板3 j， 而不致減少能量使用效率。 δ月參閱「第4圖所示」，係本發明之製造方法流程圖 。如圖所示·為達上述之增加對比度之旋光性電激發光元 件’本發明之製造方法，係包含下列步驟： a )、基板清洗並圖案化4 1，係將基板予以清洗並以 激鍵或蒸鍍方式，鍍上一層陽極予以圖案化； b )、塗佈電洞傳遞層並配向4 2，係於該陽極上塗佈 一層電洞傳遞層並予配向； c )、塗佈發光層並回火排列4 3，係於該電洞傳遞層 上塗佈一層發光層，並藉由回火程序而將該發光層排列成 螺旋平行（PLANER )結構； d )、蒸鍍陰極與封裝44，係再於該發光層上蒸鍍陰 極，並予封裝； a e )、發光面貼上圓偏光板4 5，係最後於該基板之另 一側發光面’貼上圓偏光板3 1，如是構成本發明之增加對 比度之旋光性電激發光元件。582188 5. Description of the invention (5) and arranged in a spiral parallel (PLANER) structure; the cathode 36 is provided on the light-emitting layer 35 and contains metals such as magnesium (Mg), aluminum (A1), lithium (Li), etc .; When external light is incident, the circularly polarizing plate can absorb circularly polarized light (left-handed or right-handed light) in one of the directions, so as to reduce the reflection interference of the electro-optical light element and increase the contrast; By means of the spiral parallel structure of the light-emitting layer 35, the light rays can be polarized to a specific circular polarized light (left-handed or right-handed light), thereby completely penetrating the circular polarizing plate 3j without reducing the energy use efficiency. δ Refer to "shown in Fig. 4", which is a flowchart of the manufacturing method of the present invention. As shown in the figure, in order to achieve the above-mentioned contrast-enhanced optically active electro-optical light-emitting element, the manufacturing method of the present invention includes the following steps: a) Cleaning and patterning the substrate 41. The substrate is cleaned and excited with a bond. Or vapor deposition, plating a layer of anode for patterning; b) coating the hole transfer layer and aligning 4 2; coating a hole transfer layer on the anode and aligning it; c) coating the light emitting layer Tempering arrangement 4 3, coating a light-emitting layer on the hole transfer layer, and arranging the light-emitting layer into a spiral parallel (PLANER) structure through the tempering process; d), vapor deposition cathode and package 44 The cathode is vapor-deposited on the light-emitting layer and encapsulated; ae), the circularly polarizing plate 45 is attached to the light-emitting surface, and the circularly-polarizing plate 3 1 is finally attached to the light-emitting surface on the other side of the substrate, such as The optically active optically-excited light-emitting element for increasing the contrast of the present invention.
^2188 五、發明說明（6) 知上所述’本發明利用配之電洞傳遞層上 有虫累始亚—/ 双TF具 ’、 十灯（Pi aner )結構之發光層，俾使電激發光元件 所發出之光線可偏極為特定之圓偏光（左旋光或右旋光） ’待蒸艘陰極與封裝後，最後在丨τ〇基板之一側貼上圓偏 光板’即完成電激發光元件製作。此電激發光元件既可增 加強光裱境下之對比度，亦可維持其能量使用率，對傳統 之電激發光元件作極大之改善。 上述僅為本發明之較佳實施例而已，並非用來限定本 發明實施之範圍。即凡依本發明申請專利範圍所做的均等 變化與修飾’皆為本發明專利範圍所涵蓋。^ 2188 V. Description of the invention (6) As mentioned above, the present invention utilizes a hole-transmitting layer with a wormhole on the transfer layer— / Double TF with a light-emitting layer with a ten-lamp (Pi aner) structure to make electricity The light emitted by the excitation light element can be polarized to a specific circular polarization (left-handed or right-handed). 'After the cathode of the steamer and the package, finally attach a circular polarizing plate on one side of the ττ substrate' to complete the electrical excitation. Optical element production. This electro-optical light element can not only enhance the contrast under the light-mounted environment, but also maintain its energy usage rate, and greatly improve the traditional electro-optical light element. The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. That is, all equal changes and modifications according to the scope of patent application of the present invention are covered by the scope of patent of the present invention.
582188 圖式簡單說明 【圖式簡單說明】 第1圖，係習知電激發光元件結構示意圖。 第2圖，係習知之圓偏光板作動示意圖。 第3圖，係本發明之結構示意圖。 第4圖，係本發明之製造方法流程圖。 【圖式之標號說明】 基板..................11、32 陽極· · · · · .--12133 電洞注入層................ · 1 3 電洞傳遞層...............1 4、34 發光層............ 1 5、3 5 電子傳遞層.................16 陰極................1 7、3 6、1 9 圓偏光板................1 8、3 1 光線..................2 1、2 4 右旋光............... · · 2 2、2 5 左旋光...................23 基板清洗並圖案化· · 41 塗佈電洞傳遞層並配向...... 42 塗佈發光層並迴火排列·...........43 蒸鍍陰極與封裝...............44 發光面貼上圓偏光板.............45582188 Schematic description [Schematic description] Figure 1 is a schematic diagram of the structure of a conventional electrical excitation light element. Fig. 2 is a schematic diagram of a conventional circular polarizing plate operation. Fig. 3 is a structural schematic diagram of the present invention. FIG. 4 is a flowchart of the manufacturing method of the present invention. [Explanation of reference numerals in the figure] Substrate ........ 11, 32 Anode ····· .-- 12133 Hole injection layer ....... ......... 1 3 Hole transfer layer ......... 1 1、34 Light emitting layer ............ 1 5, 3 5 electron transfer layer ... 16 cathode ... 1 7, 3 6, 1 9 Circular polarizing plate ... 1 8, 3 1 Light ... 2 1, 2, 4 Light ......... 2, 2 5 Left-handed light ... 23 Substrate cleaning and patterning 41 Coated hole transfer layer and orientation ... 42 Coated light-emitting layer and tempered arrangement ........... 43 Evaporation cathode and package ... ......... 44 The light emitting surface is attached with a circular polarizer ............. 45