TW201135904A - Light-emitting diode structure with high color-rendering index - Google Patents

Light-emitting diode structure with high color-rendering index Download PDF

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Publication number
TW201135904A
TW201135904A TW99111740A TW99111740A TW201135904A TW 201135904 A TW201135904 A TW 201135904A TW 99111740 A TW99111740 A TW 99111740A TW 99111740 A TW99111740 A TW 99111740A TW 201135904 A TW201135904 A TW 201135904A
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Taiwan
Prior art keywords
light
red
green
emitting diode
color rendering
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TW99111740A
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Chinese (zh)
Inventor
Chun-Hsien Cho
Han-Chi Chang
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Ecolighting Inc
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Priority to TW99111740A priority Critical patent/TW201135904A/en
Publication of TW201135904A publication Critical patent/TW201135904A/en

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Abstract

The present invention relates to a light-emitting diode structure with a high color-rendering index, comprising: at least a light-emitting unit, a red light-emitting unit and a green light-emitting unit, which are arranged on a substrate, wherein the light-emitting unit is provided to produce blue light and simultaneously to excite the fluorescent powder coated on the light-emitting unit to produce white light. With the specific arrangement of the red light unit and the green light unit, a mixed light produced by the LED device can produce a light source with a high color-rendering index. When red and green light are mixed together, the overlapping projected light will be visibly more natural. It will provide near perfect color reproduction for an illuminated object, thereby increasing the comfort of human perception and coordination without creating distortion effects on object.

Description

201135904 .六、發明說明: 【發明所屬之技術領域】 本發明為提供一種發光二極體,尤指一種獲 得高度物體真實顏色重現效果、並提高人體觀 感舒適度與協調性且不會讓物體顏色失真的高 演色性發光二極體之結構。 【先前技術】 • 按’隨著L E D技術的進步,L E D應用 的層面愈來愈廣泛,而成為曰常生活中不可或 缺的發光元件,由其是受到能源短缺的影響, 愈來愈多的發光產品均強調具備省電節能的功 效,而L E D憑著省電、高效能、高亮度、多 變化等諸多優點,在近年來更是受到各界矚目。 雖然各式各樣的L E D燈源、燈具不斷推 層出新,即便如此,目前L E D仍無法成為主 • 流的照明設備,其最主要的原因:一、白色光 LED之演色性不足,因白色光LED係由藍 光晶體外塗覆黃綠色螢光粉而成,利用藍光L E D激發黃綠色螢光粉所產生黃綠光,與本身 未激發的藍光混光產生白光,其三源光比例不 均勻,光線演色性大打折扣,進而使得受照明 物無法表現出原始色調。二、色溫偏高且不易 控制,因白色光L E D之發光源係藍光晶體, 故其白光之色溫偏高,就視覺而言,一般人會 3 201135904 _感到光線色調偏監,白色光L E D具有上述各 種缺失。 為改善上述白光L E D的缺點,大部分廠 商利用藍光L E D激發綠光螢光粉及紅光螢光 粉,當兩種螢光粉被激發後產生綠光及紅光與 原先用於激發的藍光互補而產生白光,來改善 白光演色性不佳及色溫偏高的缺點,但此種方 法的缺點是紅光螢光粉的效率低,為增加演色 φ 性必須要高比例較多的紅光螢光粉,然而此舉 又導致亮度降低。有鑑於此,某些廠商為提高 L E D演色性,於L E D燈具設計上利用藍光 L E D外塗覆上黃綠色螢光粉產生白光,然後 再加上紅色L E D來增加演色性,並確保亮度 不至於降低,此做法雖可達到目的,但也僅局 限於色溫較低的白光。 是以,要如何解決上述習用之問題與缺失, • 即為本發明之發明人與從事此行業之相關廠商 所亟欲研究改善之方向所在者。 【發明内容】 故,本發明之發明人有鑑於上述缺失,乃搜 集相關資料,經由多方評估及考量,並以從事 於此行業累積之多年經驗,經由不斷試作及修 改,始設計出此種獲得高度物體真實顏色重現 效果、並提高人體觀感舒適度與協調性且不會 l S1 4 201135904 讓物體顏色失真的高演 的發明專利者。 色性# 光二極體之結構 本發明之主要目的在於:〜仅 .. A 種高演色性白光 發光二極體裝置,裝置中包括 #發光件並藉由紅 光發光件與綠光發光件所產生的紅光(波長係 介於5 9 5 nm至6 4 0 nm)及綠光(波長係介於 5 0 0 nm至5 5 0 nm)同時與藍色晶片激發黃 色螢光粉產生(波長係介於5 4 5 nm至5 8201135904. Sixth, the invention description: [Technical field of the invention] The present invention provides a light-emitting diode, in particular to obtain a real color reproduction effect of a high-altitude object, and improve the comfort and coordination of the human body and does not allow the object The structure of a high color rendering light-emitting diode with color distortion. [Prior Art] • According to the advancement of LED technology, the level of LED application has become more and more extensive, and it has become an indispensable light-emitting component in ordinary life. It is affected by energy shortage, and more and more Luminous products all emphasize the power-saving and energy-saving effect, and LED has attracted attention from all walks of life in recent years due to its advantages of power saving, high efficiency, high brightness and many changes. Although all kinds of LED light sources and lamps are constantly being pushed out, even though LEDs are still unable to become the main lighting devices, the main reasons are: 1. The color rendering of white LEDs is not enough, because of white The light LED is formed by coating a yellow-green fluorescent powder on the blue crystal, and the yellow-green light is excited by the blue LED to generate yellow-green light, and the white light is mixed with the unexcited blue light, and the ratio of the three sources is uneven. The color rendering is greatly reduced, which in turn makes the illuminated objects unable to express the original color. Second, the color temperature is too high and difficult to control, because the white light LED is a blue light crystal, so its white light color temperature is high, in terms of vision, the average person will 3 201135904 _ feel the light tone is biased, white light LED has the above various Missing. In order to improve the shortcomings of the above white LEDs, most manufacturers use blue LEDs to excite green phosphors and red phosphors. When the two phosphors are excited, green and red light are generated to complement the blue light originally used for excitation. White light is produced to improve the poor color rendering performance and high color temperature. However, the disadvantage of this method is that the efficiency of the red fluorescent powder is low, and a high proportion of red fluorescent light must be added in order to increase the color rendering property. Powder, however, this in turn leads to a decrease in brightness. In view of this, some manufacturers in order to improve the color rendering of LEDs, the use of blue LEDs on the LED luminaire design to produce white light, then add red LEDs to increase color rendering, and ensure that the brightness is not reduced Although this can achieve the goal, it is limited to white light with a lower color temperature. Therefore, how to solve the above problems and problems in the past, is the inventor of the present invention and the relevant manufacturers engaged in this industry are eager to study the direction of improvement. SUMMARY OF THE INVENTION Therefore, in view of the above-mentioned deficiencies, the inventors of the present invention have collected relevant materials, evaluated and considered through various parties, and have accumulated many years of experience in the industry, and have designed and obtained such trials through continuous trial and modification. High-real object real color reproduction effect, and enhance the human body's comfort and coordination, and will not be the inventor of the invention. Chromaticity #Light Dipole Structure The main purpose of the present invention is: ~ only: A high color rendering white light emitting diode device, including #光光件 and by red light emitting device and green light emitting device Generated red light (wavelength between 599 nm and 650 nm) and green light (wavelength between 500 nm and 550 nm) simultaneously with blue wafer excitation yellow phosphor powder (wavelength The line is between 5 4 5 nm and 5 8

5 nm)黃綠光與藍光(波長係介於4 3 〇 η m至4 8 0 nm)混合成白光’藉由運用添加 紅光發光件及綠光發光件兩類的光源體使光線 的投射效果趨近自然光的顏色表現,使得被照 物體可獲得完美的色彩重現,進而提高人體觀 感的舒適度與協調性而不會讓物體產生失真之 情事。 【實施方式】 為達成上述目的及功效’本發明所採用之 技術手段及構造,茲繪圖就本發明較佳實施例 詳加說明其特徵與功能如下,俾利完全了解。 請參閱第一圖、第二圖及第三圖所示,係為 本發明各發光件之分佈示意圖、白光發光二極 體之頻譜圖及混光後之頻譜圖’由圖中可清楚 看出本發明係一種高演色性白光發光二極體, 而裝置中的發光件1 (白光發光二極體)係以藍 201135904 -色光源並同時激發該發光件外塗覆之榮光粉以 產生白光,當尚未添加紅光發光二極體2與綠 光發光二極體3時(參閱第一圖),此時的演色 指數低,隨即參閱第二圖,則為藉由紅光發光 件(紅光發光二極體)與綠光發光件(綠光發X光 二極體)所產生的紅光(波長係介於5 9 5 至 6 4 0 nm)及綠光(波長係介於5 〇 〇 nm至5 5 0 ηπι)同時與藍色晶片激發黃色螢光粉產生(波 # 長係介於545nm至585nm)黃綠光與 藍光(波長係介於43〇nrn至48〇nm) 混合成白光’藉由運用添加紅光發光件及綠光 發光件兩類的光源體使光線的投射效果趨近自 然光的顏色表現,使得被照物體可獲得完美的 色彩重現,進而提高人體觀感的舒適度與協兮周 性而不會讓物體產生失真之情事 惟’以上所述僅為本發明之較佳實施例而 • 已,非因此即拘限本發明之專利範圍,故舉凡 運用本發明說明書及圖式内容所為之簡易修傅 及等效結構變化,均應同理包含於本發明之專 利範圍内,合予陳明。 综上所述,本發明之高演色性發光二極體之 結構於使用時’為破實能達到其功效及目的 故本發明誠為一實用性優異之發明,為符合發 明專利之申請要件,爰依法提出申請,盼 ^ 委早日賜准本發明,以保障發明人之辛苦發 201135904 明,倘若 鈞局審委有任何稽疑,請不吝來函 指示,發明人定當竭力配合’實感公便。5 nm) yellow-green light and blue light (wavelength system between 4 3 〇η m and 480 nm) are mixed into white light. By using a light source body with two types of red light-emitting elements and green light-emitting elements, the projection effect of light is tended. The color performance of the near-natural light enables the illuminated object to obtain perfect color reproduction, thereby improving the comfort and coordination of the human body perception without causing distortion of the object. [Embodiment] In order to achieve the above objects and effects, the technical means and constructions of the present invention are described in detail with reference to the preferred embodiments of the present invention. Please refer to the first, second and third figures, which are schematic diagrams of the distribution of the illuminating members of the present invention, the spectrogram of the white light emitting diode and the spectrogram after the light mixing, which can be clearly seen from the figure. The invention is a high color rendering white light emitting diode, and the illuminating member 1 (white light emitting diode) in the device is a blue light source of the 201135904-color light source and simultaneously exciting the glazing powder coated on the illuminating member to generate white light. When the red light emitting diode 2 and the green light emitting diode 3 have not been added (refer to the first figure), the color rendering index is low at this time, and then referring to the second figure, the red light emitting device (red light) Red light emitted by the light-emitting diode and the green light-emitting element (green light emitting diode) (wavelength system is between 5 9 5 and 6 40 nm) and green light (wavelength system is between 5 〇〇 nm) Up to 5 5 0 ηπι) simultaneously with the blue wafer excited yellow phosphor powder (wave #length system between 545nm to 585nm) yellow green light and blue light (wavelength system between 43〇nrn to 48〇nm) mixed into white light' The use of a light source body with two types of red light-emitting elements and green light-emitting elements makes the projection effect of light The color expression of natural light enables the illuminated object to obtain perfect color reproduction, thereby improving the comfort and coordination of the human body without disturbing the object. However, the above is only the preferred embodiment of the present invention. The present invention is not limited to the scope of the patents of the present invention. Therefore, the simple modifications and equivalent structural changes that are made by using the present specification and the drawings are included in the scope of the patent of the present invention. , combined with Chen Ming. In summary, the structure of the high color rendering light-emitting diode of the present invention can achieve its efficacy and purpose when it is used. Therefore, the invention is an invention which is excellent in practicality, and is an application element conforming to the invention patent.提出 Submit an application in accordance with the law, and hope that the Commission will grant the invention as soon as possible to protect the inventor's hard work. If there is any doubt in the trial committee, please do not hesitate to give instructions to the inventor to try to cooperate with the real feelings.

201135904 圖 意 示 佈 分 之 件 、光 發 各 明 1發 明本 說為 單係 簡 式圖 圖一 t第 第 圖 圖 三 第 光 之 發 後 光 光 白 混 明 明 發 發 本 本 為。為 係圖係 譜 頻 之 體 極 圖 昝 =口 【主要元件符號說明】 發光件 ......1 紅光發光二極體 ......2 綠光發光二極體 ......3201135904 The figure shows the parts of the cloth, the light and the light, each of which is said to be a single-line simplified figure. Figure 1 is the first picture. Figure 3 After the light is emitted, the light and white are mixed and the original is issued. The body diagram of the spectrum of the system is 昝 = mouth [description of the main components] illuminating parts... 1 red light emitting diodes... 2 green light emitting diodes.... ..3

Claims (1)

201135904 七201135904 seven 、申凊專利範圍·· 係包括: 一種高演色性發光二極體之結構 一基板; f、一發·光件,該發光件係設於該基板, :二1: f件係放射藍色光源,並同時激發 該發光件外塗覆之螢光粉以產生白光; 至少一紅光發光件,今 邊紅先發忐件係設於 έ亥基板,且放射红多I 邑先源同時與該白光混 光,及 至 少 — 綠 光 發 光 件 , 該 該 基 板 5 且 放 射 綠 光 光 該 紅 光 混 光 〇 如 中 請 專 利 章巳 園 第 1 項 光 二 極 體 之 結 構 其 中 片 激 發 黃 色 螢 光 粉 產 生 5 η m 至 5 8 5 η m ) 長 係 介 於 4 3 0 η m 至 而 成 〇 如 中 請 專 利 範 圍 第 1 項 光 二 極 體 之 結 構 y 其 中 光 波 長 係 介 於 5 9 5 nm 如 中 請 專 利 範 圍 第 1 項 光 二 極 體 之 結 構 > 其 中 光 波 長 係 介 於 5 0 0 1 nm 如 中 請 專 利 範 圍 第 1 項The scope of the patent application includes: a substrate for the structure of a high color rendering light-emitting diode; f, a light-emitting member, the light-emitting member is disposed on the substrate, : 2: f-piece emits blue a light source, and simultaneously exciting the phosphor powder coated on the illuminating member to generate white light; at least one red illuminating member, the red priming element is disposed on the έ 基板 substrate, and the radiation red I 邑 source is simultaneously The white light is mixed, and at least the green light emitting device, the substrate 5 and the green light is radiated. The red light is mixed, such as the structure of the first light diode of the first chapter of the patented Zhangyeyuan, wherein the yellow fluorescent powder is generated. η m to 5 8 5 η m ) The length of the system is between 4 3 0 η m and the structure of the photodiode of the first item of the patent range y, wherein the wavelength of light is between 5 9 5 nm. The structure of the first item of the light diode of the range > wherein the wavelength of the light is between 5 0 1 nm, as in the first item of the patent scope 2 綠光發光件係設於 源同時與該白光及 所述之高演色性發 該發光件為藍色晶 (波長係介於5 4 黃綠光與藍光(波 4 8 〇 n m )混合 所述之兩演色性發 該紅光發光件之紅 至 6 4 0 nm。 所述之高演色性發 該綠光發光件之綠 至 5 5 0 nm。 所迷之咼演色性發L s j 9 4 201135904 光二極體之結構,其中該螢光粉係為黃綠 色螢光粉。 6 、如申請專利範圍第1項所述之高演色性發 光二極體之結構,其中該發光件係為白光 發光二極體。 7 、如申請專利範圍第1項所述之高演色性發 光二極體之結構,其中該紅光發光件係為 紅光發光二極體。 8 、如申請專利範圍第1項所述之高演色性發 光二極體之結構,其中該綠光發光件係為 綠光發光二極體。2 The green light emitting device is disposed at the same time with the white light and the high color rendering property, and the light emitting member is blue crystal (the wavelength system is mixed with 5 4 yellow green light and blue light (wave 4 8 〇 nm) The color rendering of the red light illuminating member is red to 640 nm. The high color rendering property of the green illuminating member is green to 550 nm. The fascinating color rendering is L sj 9 4 201135904 light dipole The structure of the body, wherein the phosphor powder is a yellow-green phosphor. 6. The structure of the high color rendering light-emitting diode according to claim 1, wherein the light-emitting element is a white light-emitting diode. 7. The structure of the high color rendering light-emitting diode according to claim 1, wherein the red light-emitting component is a red light-emitting diode. 8. According to the first aspect of the patent application. A structure of a high color rendering light emitting diode, wherein the green light emitting device is a green light emitting diode. 1010
TW99111740A 2010-04-15 2010-04-15 Light-emitting diode structure with high color-rendering index TW201135904A (en)

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