1236168 九、發明說明： 【發明所屬之技術領域】 本發明係在提供一種白光發光裝置，特指一種可發出 演色性佳，白光顯現更均勻的發光裝置。 【先前技術】 按台灣發明專利公告第3 8 3 5 0 8號發光裝置、公 告號第385063號新白光LED、公告號第5563 6 5號一種製作白光發光二極體光源之方法及公告號第* β 5 1 2 3號高功率白色發光二極體等專利案，其螢光層 均是利用無機聚合物構成（如γ A G黃色螢光層），但由於 螢光層以塗佈方法於發光元件（LED)之表面及周圍時 ，其均勻性及附著性無法有效控制，故被激發出之混合光 (白光）’彼此間混合不均勻，例如白光可能是中間偏藍， 周圍偏黃，人眼看出去可能是白光，但當該混合光投射在 純白紙上，則呈現中央藍，周圍偏黃的結果。 因此’如何開創出一種演色性佳及均勻性佳的白光發光 裝置乃是本案鑽研之課題。 【發明内容】 緣疋，本發明之主要目的，即在提供一種白光發光裝 置藉著有機螢光體為有機發光聚合物以氣化狀態被蒸鍵 於發光7G件上，以及有機螢光體被封裝於具有聚光及折射 光特性的封裝層中，進一步使該裝置向外發射出的混合光 (白光）其顏色均勻性及演色性佳。 士圖、一、二所示，本發明係在提供一種白光發光 1236168 裝置，乃包含： 發光晶體1 0 ( Chip)做為發光光源1 5，其發光波 長介於340nm〜495nm之間；高分子有機聚合物 做為有機螢光層20，該有機螢光層20被蒸鍍附著於發 光晶體10之表面12上方； 具有均勻擴散光線的封裝層4 0係將發光晶體1 0及 有機螢光層2 0包覆封裝； 發光晶體1 0所發出之光源1 5去激發有機螢光層2 0，使有機螢光層2 0被激發出波長與發光光源1 5不同 的第二光3 0 (波長介於5 3 0 nm〜5 8 0 nm)，該第 二光3 0與部份未被激發的光源1 5，兩者波長在封裝層 4 0中相混合，以形成混合光3 5，在該混合光3 5投射 在封裝層4 0中，被封裝層4 0中的複數奈米級晶粒4 4 施以聚光及折射光線，使混合光3 5更均勻的混合並向封 裝層4 0外面發射出，以可得均勻性及演色性佳的白光3 6 〇 依據前述之主要特徵，其中有機螢光層2 0其材質的 化學式為（chchsc2conc6h5) 2c10h7。 依據前述之主要特徵，封裝層4 0材料係由透明樹脂 4 2混合奈米級晶粒4 4彼此混合而成，其中奈米級晶粒 4 4係為透明或半透明體，其顆粒大、小約被控制在1 〇 〇奈米，具有聚光、折射光之物理特性。 依據前述之主要特徵，其中有機螢光層2 〇係由高溫 氣化的有機螢光材料，在真空環境中，被蒸鍍附著於發光 1236168 晶體1 0之表面1 2上方，以形成有機螢光層2 0。 依據前述之主要特徵，其中第二光3 0的波長介於5 30nm〜580nm之間。 【實施方式】 (1)·如圖一發光晶體1〇 ( chip )為發光元件，受電極 作用，可發出波長為3 4 0 nm〜4 9 5 nm之間 的光，亦即光源1 5發出的光，其包含紫外光、紫 光、藍光或藍綠光。有機螢光層20其化學式是（ CHCHSC2CONC6H5) 2C1GH7 (雙嗟吩苯胺酮單苯） 為一種高分子有機聚合物合成材料。呈氣化狀的有 機螢光聚合物，得在高溫高壓及真空環境下，蒸鍍 附著在發光晶體1 〇 ( chip )的發光表面12上， 俾以形成有機螢光層2 0，其厚度最好控制5 0 〇 A°〜500〇A°之間，亦可視設計者之需求而 決定厚薄者。透明封裝層4 0其内部均勻混合有透 明或半透明的奈米級晶粒4 4，其在顯微鏡的觀察 下係呈顆粒狀，在人肉眼觀察下係呈粉末狀。 如圖二、三所示，光源15發出34〇11111〜4 9 5 n m波長的光時，光源1 5激發有機螢光層2 〇 ’使有機螢光層20發出另一與光源15不同的第 一光30 ’第二光30波長介於530 nm〜58 0 n m之間，被定義為黃綠〜黃燈色光，由於有機 螢光層2 0係以氣化的形態，被蒸鍍於晶體1 〇之 發光表面1 2上，因此有機螢光層2 0冷卻與定型 7 1236168 於晶體1 Q表面1 2上的均勻性及附著性極佳，故 可提向發光強度及發光之均勻性。該第二光3 〇再 與部份未激發有機螢光層2 0的光源i 5相混合， 可得混合光3 5，該混合光3 5被定義為白光，該 混合光3 5投射於透明封裝層4 〇時，由於封裝層 4 0中均分佈若干數量比率的透明奈米級晶粒4 4 ，其材料組成的混合比最好為透明樹脂9 〇% 、透 明或半透明的奈米級晶粒工〇 “皮此均勻混合而成 ，透明或半透明的奈米級晶粒4 4以各種形狀表現 ，如圓形、橢圓形、多角度或不規則形狀的微粒表 現。透明或半透明的奈米級晶粒4 4特性是得以聚 光及折射光的作用，進一步使混合光3 5在透明封 裝層4 〇中，非常均勻的被混合、聚光、折射再發 射出透明封裝層4 〇外，因此可得均勻性、演色性 極佳以及發光強度更強的白光3 6顯現者。 8 1236168 【圖式簡單說明】 第一圖為本發明發光裝置的斷面圖。 第二圖為本發明的流程方塊圖。 第三圖為本發明封裝層局部放大斷面圖 【主要元件符號說明】 晶體-------10 表面-------1 2 光源-------1 5 有機螢光層----20 第二光------3 0 混合光------3 5 △止_______Ο Ο1236168 IX. Description of the invention: [Technical field to which the invention belongs] The present invention is to provide a white light emitting device, particularly a light emitting device that can emit good color rendering and more uniform white light. [Prior technology] According to Taiwan Invention Patent Bulletin No. 3 8 3 5 0 8 light-emitting device, Bulletin No. 385063 new white LED, Bulletin No. 5563 6 5 A method for making white light-emitting diode light source and Bulletin No. * For the patent cases of β 5 1 2 3 high-power white light-emitting diodes, etc., the fluorescent layers are made of inorganic polymers (such as γ AG yellow fluorescent layer). The uniformity and adhesion of the surface of the device (LED) and its surroundings cannot be effectively controlled, so the mixed light (white light) that is excited is not uniformly mixed with each other. For example, white light may be blue in the middle and yellow in the surrounding area. The eye may see that it may be white light, but when the mixed light is projected on pure white paper, it appears as a central blue with yellowish surroundings. Therefore, how to create a white light emitting device with excellent color rendering and uniformity is the subject of this case. [Summary of the Invention] The main purpose of the present invention is to provide a white light emitting device which is vapor-bonded to a light-emitting 7G member by using an organic phosphor as an organic light emitting polymer in a vaporized state, and the organic phosphor is Encapsulated in an encapsulation layer with light-concentrating and refracting light characteristics, so that the mixed light (white light) emitted by the device outward has better color uniformity and color rendering. As shown in Figures 1 and 2, the present invention is to provide a white light emitting 1236168 device, which includes: a light emitting crystal 10 (Chip) as a light emitting light source 15 having a light emitting wavelength between 340 nm and 495 nm; a polymer An organic polymer is used as the organic fluorescent layer 20, and the organic fluorescent layer 20 is vapor-deposited and attached to the surface 12 of the light-emitting crystal 10. The encapsulation layer 40 with uniformly diffused light is a light-emitting crystal 10 and an organic fluorescent layer. 2 0 encapsulation; light source 15 emitted by light emitting crystal 10 to excite organic fluorescent layer 20, so that organic fluorescent layer 20 is excited to emit a second light 3 0 (wavelength different from wavelength of light emitting light source 15) (Between 5 3 0 nm and 5 8 0 nm), the second light 30 and the partially unexcited light source 15 are mixed in the encapsulation layer 40 to form a mixed light 3 5 The mixed light 3 5 is projected into the encapsulation layer 40, and the plurality of nanometer-level crystal grains 4 4 in the encapsulation layer 40 are condensed and refracted, so that the mixed light 3 5 is more uniformly mixed to the encapsulation layer 4. 0 is emitted from the outside to obtain white light with good uniformity and color rendering. 3 6 〇 According to the aforementioned main features, organic fluorescent The material layer 20 has the formula (chchsc2conc6h5) 2c10h7. According to the aforementioned main features, the material of the encapsulation layer 40 is made of transparent resin 4 2 mixed with nano-sized grains 4 4, and the nano-sized grains 4 4 are transparent or translucent bodies with large particles, The small size is controlled at 1000 nanometers, which has the physical characteristics of condensing and refracting light. According to the foregoing main features, the organic fluorescent layer 20 is an organic fluorescent material vaporized from high temperature. In a vacuum environment, it is vapor deposited and attached to the surface 12 of the light-emitting 1236168 crystal 10 to form organic fluorescent light. Layer 2 0. According to the aforementioned main feature, the wavelength of the second light 30 is between 5 30 nm and 580 nm. [Embodiment] (1). As shown in Fig. 1, a light-emitting crystal 10 (chip) is a light-emitting element, which can emit light with a wavelength between 3 40 nm and 4 9 5 nm under the action of an electrode, that is, the light source 15 emits Light including ultraviolet, violet, blue, or blue-green light. The organic fluorescent layer 20 has a chemical formula of (CHCHSC2CONC6H5) 2C1GH7 (diphenanilone monobenzene) as a high molecular organic polymer synthetic material. The vaporized organic fluorescent polymer can be deposited on the light-emitting surface 12 of the light-emitting crystal 10 (chip) in a high-temperature, high-pressure, and vacuum environment to form an organic fluorescent layer 20, and its thickness is the largest. It is easy to control between 500 ºA and 500 ºA, and the thickness can be determined according to the needs of the designer. The transparent encapsulation layer 40 is uniformly mixed with transparent or translucent nano-grade crystal grains 4 4. The transparent encapsulation layer 40 is granular under a microscope observation and powdery under a human eye. As shown in Figs. 2 and 3, when the light source 15 emits light having a wavelength of 34〇11111 ~ 4 9 5 nm, the light source 15 excites the organic fluorescent layer 2 0 ′ to cause the organic fluorescent layer 20 to emit another light source different from the light source 15. One light 30 'The second light 30 has a wavelength between 530 nm and 580 nm and is defined as yellow-green to yellow-light color light. Since the organic fluorescent layer 20 is vaporized, it is vapor-deposited on the crystal 1 〇 on the light emitting surface 12, so the organic fluorescent layer 20 cooling and shaping 7 1236168 on the crystal 1 Q surface 12 has excellent uniformity and adhesion, so it can improve the light emission intensity and uniformity of light emission. The second light 30 is mixed with a part of the light source i 5 that does not excite the organic fluorescent layer 20 to obtain a mixed light 35. The mixed light 35 is defined as white light, and the mixed light 35 is projected on transparent At the time of the encapsulation layer 40, because the encapsulation layer 40 is distributed with a number of transparent nano-grade crystal grains 4 4, the mixing ratio of the material composition is preferably 90% of transparent resin, transparent or translucent nano-grade. The grains are uniformly mixed, and the transparent or translucent nano-grade grains 4 4 are expressed in various shapes, such as round, oval, multi-angle or irregularly shaped particles. Transparent or translucent The characteristic of nano-sized crystal grains 4 4 is to be able to condense and refract light, so that the mixed light 3 5 is mixed, concentrated, refracted in the transparent encapsulation layer 4 0 very uniformly, and then the transparent encapsulation layer 4 is emitted. 〇 In addition, white light 36 exhibiting uniformity, excellent color rendering, and stronger luminous intensity can be obtained. 8 1236168 [Simplified illustration of the drawing] The first picture is a cross-sectional view of the light emitting device of the present invention. The second picture is The block diagram of the process of the present invention. The third figure is the package of the present invention Partially enlarged cross-sectional view of the layer [Description of main component symbols] Crystal ------- 10 Surface ------- 1 2 Light source ------- 1 5 Organic fluorescent layer ---- 20 Second light ------ 3 0 Mixed light ------ 3 5 △ 止 _______ Ο Ο
^ 7υ Ο D 封裝層------40 透明樹脂-----4 2 奈米級晶粒----4 4^ 7υ Ο D Encapsulation layer ------ 40 Transparent resin ----- 4 2 Nano-grade grains ---- 4 4