201031020 六、發明說明： 【發明所屬之技術領域】 且特別是有關於一 本發明是有關於一種發光裝置 種彩色發光裝置。 【先前技術】201031020 VI. Description of the Invention: [Technical Field of the Invention] In particular, the present invention relates to a color light-emitting device of a light-emitting device. [Prior Art]
❹ 習知製作彩色發光二極體的方法，主要有兩種力 法。-種方式是直接以發光二極體晶片發出不同波長之 彩色光源，例如紅光、撥光、黃光、藍光或綠光等 是，由於發光光源之波長較難調冑，且其光源波長之丰 波寬固疋，所以可以變化之色彩較少。 另一種方式則是利用發光二極體晶片與螢光粉，讓 發光二極體晶片所發出之光線來激發螢光粉發光，以混 光方式形成新光源。然而，由於螢光粉會吸收發光二極 體晶片所發出之光線後再激發出光線，因此，這種發光 光源之發光效率不僅會較純晶片型的發光二極體光源 差，且其亮度的穩定性也比較低。 因此，亟需一種改良式彩色發光裝置，以解決上述 之問題。 【發明内容】 依照本發明一實施例，提出一種彩色發光裝置。其 係利用發光70件放出具有第一波長之光，激發第一螢光 材料、第二螢光材料與第三螢光材料，使其分別放出第 一波長、第二波長與第四波長之光線，以混合成一彩色 201031020 光。上述之第一、第二與第三螢光材料皆覆設在發光元 件上，且第一、第二與第三螢光材料之材料分別為一銪 金屬活化之金屬氧化物、稀土金屬活化之氮氧化物與銪 金屬活化之氮氧化物。 上述第一波長範圍為介於360 nm至420 nm之間、 第二波長範圍為介於420 nm至480 nm之間、第三波長 範圍為介於510 nm至550 nm之間以及第四波長範圍為 介於560 nm至640 nm之間。 ❿ 【實施方式】 本發明提出一種彩色發光裝置，其係利用紫外光或 紫光來激發氮氧化物之螢光粉與銪金屬活化之金屬氧化 物，以產生多樣化之彩色光源，並大幅改善裝置之穩定 度。其中，氮氧化物螢光粉與銪金屬活化之金屬氧化物 之設置方式，可以直接塗佈在發光元件上，或是利用封 裝膠體，但並不以此為限。以下將以詳細說明來清楚闡 述本發明之精神，如熟悉此技術之人員在瞭解本發明之 較佳實施例後，當可由本發明所揭示之技術，加以改變 及修飾，其並不脫離本發明之精神與範圍。 在本發明之一實施例中，本發明之彩色發光裝置主 要係包括發光元件與包覆於其上之封裝膠體所構成，其 中，封裝膠體具有第一螢光粉、第二螢光粉與第三螢光 粉散佈於其中。第一螢光材料、第二螢光材料與第三螢 201031020 光材料分別為一销金屬活化之金屬氧化物、稀土金屬活 化之氮氧化物與銪金屬活化之氮氧化物。一般而言，彩 色發光裝置更可以包含承載發光元件之承載裝置，例如 電路板或支架等，但並不以此為限。 上述之發光元件可以例如為發光二極體，且此發光 元件係由至少一半導體材料所組成。其中，此半導體材 料較佳為III-V族之多元複合化合物。 ▲ 第一螢光材料為一銪金屬活化之金屬氧化物，其化 學式例如可為（Μ〗·”，Qx，Euy)Mg2Al16027，其中Μ與Q 為金屬元素，〇Sx<0.5，0.01<y<0.20。上述之金屬元素例 如可以為鈣、锶或鋇。 第二螢光材料係由稀土金屬活化之金屬氮氧化物所 組成，例如可使用鈽（Ce)及/或铽（Tb)之稀土金屬來活化 之。在本發明之一實施例中，此第二螢光材料之化學式 ❿ 例如可以為（Y，M)(m/vai)Si(i2-m-n)Al(m + n)OnN(i6-n):Ces，习 There are two main methods for making a color light-emitting diode. A method is to directly emit a color light source of different wavelengths in a light-emitting diode chip, such as red light, light-emitting, yellow light, blue light or green light, etc., because the wavelength of the light-emitting source is difficult to adjust, and the wavelength of the light source is The Fengbo is wide and solid, so the color that can be changed is less. Another method is to use the light-emitting diode chip and the phosphor powder to make the light emitted by the light-emitting diode chip to emit the phosphor powder, and to form a new light source by mixing light. However, since the phosphor powder absorbs the light emitted by the LED chip and then excites the light, the luminous efficiency of the light source is not only worse than that of the pure wafer type light emitting diode, and its brightness is The stability is also relatively low. Therefore, there is a need for an improved color illuminating device to solve the above problems. SUMMARY OF THE INVENTION In accordance with an embodiment of the present invention, a color light emitting device is provided. It emits light having a first wavelength by using 70 pieces of light, and excites the first fluorescent material, the second fluorescent material and the third fluorescent material to emit light of the first wavelength, the second wavelength and the fourth wavelength, respectively. To mix into a color 201031020 light. The first, second and third phosphor materials are all disposed on the light-emitting element, and the materials of the first, second and third phosphor materials are respectively a metal-activated metal oxide and a rare earth metal activated Nitrogen oxides and ruthenium metal activated oxynitrides. The first wavelength range is between 360 nm and 420 nm, the second wavelength range is between 420 nm and 480 nm, the third wavelength range is between 510 nm and 550 nm, and the fourth wavelength range It is between 560 nm and 640 nm. ❿ [Embodiment] The present invention provides a color light-emitting device that uses ultraviolet light or violet light to excite phosphorescent powder of oxynitride and metal oxide activated by base metal to generate a variety of color light sources and greatly improve the device. Stability. The arrangement of the oxynitride fluoron powder and the ruthenium metal activated metal oxide may be directly applied to the luminescent element or may be encapsulated, but not limited thereto. The spirit and scope of the present invention will be apparent from the following description of the preferred embodiments of the invention. The spirit and scope. In an embodiment of the present invention, the color light-emitting device of the present invention mainly comprises a light-emitting element and an encapsulant coated thereon, wherein the encapsulant has a first phosphor powder, a second phosphor powder and a first Three fluorescent powders are scattered in it. The first fluorescent material, the second fluorescent material and the third fluorescent material 201031020 are respectively a metal activated metal oxide, a rare earth metal activated nitrogen oxide and a base metal activated nitrogen oxide. In general, the color light-emitting device may further include a carrying device for carrying the light-emitting element, such as a circuit board or a bracket, but is not limited thereto. The above-mentioned light-emitting element may be, for example, a light-emitting diode, and the light-emitting element is composed of at least one semiconductor material. Among them, the semiconductor material is preferably a multi-component compound of the group III-V. ▲ The first fluorescent material is a metal-activated metal oxide, and its chemical formula can be, for example, (Μ〗·, Qx, Euy) Mg2Al16027, wherein Μ and Q are metal elements, 〇Sx<0.5, 0.01<y< 0.20. The above metal element may be, for example, calcium, strontium or barium. The second fluorescent material is composed of a rare earth metal activated metal oxynitride, for example, cerium (Ce) and/or thallium (Tb) rare earth may be used. The metal is activated. In an embodiment of the invention, the chemical formula 此 of the second fluorescent material may be, for example, (Y, M) (m/vai) Si(i2-mn)Al(m + n)OnN( I6-n): Ces,
Tbt，其中Y為紀元素，Μ為一金屬元素，例如為妈元素 或鋇元素，m代表結構Α1-Ν鍵結數目，η代表結構Α1-0 鍵結數目，val表示金屬元素Μ之價數，且0.8<η<2.0， 2.0<m+n<3.0，0.1<s<0.5，0<t<0.1 ° 第三榮光材料係由銪金屬活化之金屬氮氧化物所組 成。在本發明之一實施例中，此第三螢光材料之化學式 .例如可以為（Y，，其中 201031020 Y為紀元素’ Μ為一金屬元素，例如為妈兀素或頻元素’ m代表結構Α1-Ν鍵結數目，η代表結構Α1-0鍵結數目， val表示金屬元素Μ之價數，且0.8<η<2·0 ’ 2.0<m+n<3.0，20%<ζ<50% ° 在本發明之一實施例中，發光元件所發出之光具有 第一波長，發光元件所發光之光可激發第一勞光粉、第 二螢光粉與第三螢光粉，而第一螢光粉、第二螢光粉與 第三螢光粉經吸收第一波長後，會分別被激發產生具有 第二波長、第三波長以及第四波長之光線。上述之發光 元件所發出之第一波長的光會與第二波長之光線、第三 波長之光線以及第四波長之光線混合，而產生一彩色光。 在本發明之一實施例中，發光元件可以發出例如紫 光或紫外光，且第一螢光粉被經激發後可以發出藍光， 第二螢光粉被經激發後則可以發出綠光，而第三螢光粉 φ 被經激發後則可以發出紅光。其中，上述之第一波長範 圍，例如可介於為360 nm至420 nm之間。第一螢光粉 可吸收被激發之光的波長範圍，例如介於為300 nm至 410nm之間，第二螢光粉可吸收被激發之光的波長範 圍，例如介於為360 nm至480 nm，而第三螢光粉可吸 收被激發之光的波長範圍，例如介於360 nm至480 nm 之間。 在本實施例中，第一螢光粉經紫光激發出後之光譜 201031020 如第1圖所示，第二螢光粉經紫光激發出後之光譜如第 2圖所示，且第三螢光粉經紫光激發出後之光譜如第3 圖所示。在此實施例中，第一螢光粉經激發後發出之光 線，其所具有的第二波長範圍，例如介於420 nm至約 480 nm之間。在另一實施例中，第二波長範圍可介於為 440 nm至460 nm之間。第二螢光粉經激發後發出之光 線，其所具有的第三波長範圍例如介於為500 nm至570Tbt, where Y is a epoch element, Μ is a metal element, such as a mother element or a 钡 element, m represents the number of structure Α1-Ν bonds, η represents the number of structures Α1-0 bond, and val represents the valence of the metal element Μ And 0.8 < η < 2.0, 2.0 < m + n < 3.0, 0.1 < s < 0.5, 0 < t < 0.1 ° The third glory material is composed of ruthenium metal activated metal oxynitride. In an embodiment of the present invention, the chemical formula of the third fluorescent material may be, for example, (Y, wherein 201031020 Y is a metal element, such as a mother element or a frequency element 'm represents a structure. Α1-Ν linkage number, η represents the number of structural Α1-0 bonds, val represents the valence of the metal element ,, and 0.8<η<2·0 ' 2.0<m+n<3.0,20%<ζ< 50% ° In one embodiment of the present invention, the light emitted by the light emitting element has a first wavelength, and the light emitted by the light emitting element can excite the first working powder, the second fluorescent powder and the third fluorescent powder. After the first phosphor powder, the second phosphor powder and the third phosphor powder absorb the first wavelength, they are respectively excited to generate light having the second wavelength, the third wavelength and the fourth wavelength. The emitted light of the first wavelength is mixed with the light of the second wavelength, the light of the third wavelength, and the light of the fourth wavelength to generate a colored light. In an embodiment of the invention, the light emitting element may emit, for example, violet light or Ultraviolet light, and the first phosphor powder is excited to emit blue light. The second phosphor is excited to emit green light, and the third phosphor φ is excited to emit red light, wherein the first wavelength range may be, for example, 360 nm to 420. Between nm, the first phosphor absorbs the wavelength range of the excited light, for example between 300 nm and 410 nm, and the second phosphor absorbs the wavelength range of the excited light, for example between 360 Nm to 480 nm, and the third phosphor absorbs the wavelength range of the excited light, for example, between 360 nm and 480 nm. In this embodiment, the spectrum of the first phosphor after excitation by violet light 201031020 As shown in Fig. 1, the spectrum of the second phosphor after excitation by violet light is shown in Fig. 2, and the spectrum of the third phosphor after excitation by violet light is shown in Fig. 3. In an example, the first phosphor is excited to emit light having a second wavelength range, for example, between 420 nm and about 480 nm. In another embodiment, the second wavelength range may be between Between 440 nm and 460 nm. The second fluorescing powder emits light after it is excited. The three wavelength range is, for example, between 500 nm and 570
赢 nm之間。在另一實施例中，第三波長範圍可介於為510 W nm至550 nm之間，更佳為介於520 nm至540 nm之間。 而第三螢光粉經激發後發出之光線，其所具有的第四波 長範圍，例如介於560 nm至640 nm之間。在另一實施 例中，第四波長範圍為介於600 nm至640 nm之間，更 佳者為介於610 nm至630 nm之間。 在本發明之一實施例中，發光元件所發出之紫光、 φ 第一螢光粉所產生之藍光、第二螢光粉所產生之綠光以 及第三螢光粉所產生之紅光，混合後可產生一彩色光， 其混光光譜如第4圖所示。或者，更可以藉由調整螢光 粉的比例，以發出不同色之光線，例如可以為白光。 因此，由上述之實施例可知，本發明係利用發光元 件所發出之紫光或紫外光，來激發銪金屬活化之金屬氧 化物、稀土金屬活化之氮氧化物以及销金屬活化之氮氧 化物，以混合成為一彩色光。再者，氮氧化物之螢光粉 201031020 不僅會受到發光元件所發出之光線激發，而且也會受到 末自於销金屬活化之金屬氧化.物螢光粉所發出之藍色光 激發’也就是說，氮氧化物之螢光粉可以在紫光與藍光 之光源下’高效率地被激發。如此一來，則能提高發光 效率。 另外’由於本發明所採用之紅色螢光粉與綠色螢光 粉均為金屬之氮氧化物，因此這些螢光粉在高溫高濕下 ❹ 均可穩定存在’不會產生裂解的情況’進而可有效提高 發光裝置之穩定度與安定性。除此之外，本發明之彩色 發光裝置，更可經由調整不同比例之螢光粉而產生白光。 雖然本發明已以實施例揭露如上，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，當可作各種之更動與濶飾，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。 參 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、優點與實施 例能更明顯易懂，所附圖式之詳細說明如下： 第1圖，其係本發明之一實施例中之第一螢光粉經 紫光激發後之光譜。 ' 第2圖，其係本發明之一實施例中之第二螢光粉經 紫光激發後之光譜。 ' 第3圖，其係本發明之一實施例中之第三螢光粉經 201031020 紫光激發後之光譜。 第4圖，其係係本發明之一實施例中之一種經混色 後產生彩色光之光譜。Win between nm. In another embodiment, the third wavelength range may be between 510 W nm and 550 nm, more preferably between 520 nm and 540 nm. The light emitted by the third phosphor after excitation has a fourth wavelength range, for example, between 560 nm and 640 nm. In another embodiment, the fourth wavelength range is between 600 nm and 640 nm, and more preferably between 610 nm and 630 nm. In an embodiment of the invention, the violet light emitted by the light emitting element, the blue light generated by the φ first phosphor powder, the green light generated by the second phosphor powder, and the red light generated by the third phosphor powder are mixed. A colored light is then produced, and the mixed light spectrum is as shown in Fig. 4. Alternatively, it is possible to emit light of different colors by adjusting the proportion of the phosphor powder, for example, white light. Therefore, it can be seen from the above embodiments that the present invention utilizes violet or ultraviolet light emitted by a light-emitting element to excite a metal oxide activated by a base metal, a nitrogen oxide activated by a rare earth metal, and a nitrogen oxide activated by a metal. Mix into a colored light. Furthermore, the oxynitride fluorofoam 201031020 is not only excited by the light emitted by the illuminating element, but also by the blue light emitted by the metal oxidized powder activated by the pin metal. The oxynitride fluoron powder can be 'excited efficiently' under the source of violet and blue light. In this way, the luminous efficiency can be improved. In addition, since both the red fluorescent powder and the green fluorescent powder used in the present invention are metal nitrogen oxides, these fluorescent powders can be stably present under high temperature and high humidity, and there is no case of cracking. Effectively improve the stability and stability of the illuminating device. In addition, the color light-emitting device of the present invention can generate white light by adjusting different proportions of phosphor powder. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and it is obvious to those skilled in the art that various changes and modifications can be made 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 attached. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; The spectrum of the first fluorescent powder after being excited by violet light. Fig. 2 is a spectrum of the second phosphor in an embodiment of the present invention after excitation by violet light. Fig. 3 is a spectrum of the third phosphor in an embodiment of the present invention after excitation by violet light of 201031020. Figure 4 is a diagram showing the spectrum of colored light produced by color mixing in an embodiment of the present invention.
1010