九、發明說明： 【發明所屬之技術領域】 本發明係有關一種發光裝置，尤其有關一種可發射白光之四 色發光裝置及操作此種四色發光裝置之方法。 【先前技術】 發光二極體(LEDs)通常係用作光源、照明器、指示燈及顯示 器，是現今熟知的固態光產生器件，其產生的光在光譜之一特定 區域内，具有峰值波長。LEDs利於用作光源有數個原因。LEDs與 燈/包或曰光燈（螢光燈）比較時，更具機械強度，因為它們通常可 以耐受更大的衝擊或震動。此外，LEDs通常使用壽命長，可減少 更換損毁二極體的頻率。需要更換一 LED時，也比更換螢光源更 谷易更絰濟。此外’ LEDs具有低功耗、體積小與重量輕的優點， 所以可用在各種不同醜示崎上，從液晶顯示器之背光源到交 通號誌、燈。 目洳已發展的LEDs可分別發射紅(r)、綠(G)、藍(B)色光。 由於白色對於王色（fuU-eQlQr)圖像顯示非常重要，所以在習用 技術中，至少有兩種不同方絲發射白光。在第—種方法中係 將紅、綠、iLEDs各自發出的絲以混合，以提供自發射光，或 於必要時提供其他脱發攸。細，在第—種以紅綠藍三色為 基礎的方法巾，可能很難提供波魏圍約在5編(奈米）至麵咖 的號拍（黃）色發射光。此外，第—種方法可能也很難提供相關色 5 1323139 溫(CCT)低於約3000。]((克氏絕對溫度）的白發射光。 • 在第二種方法_，係使用一種波長轉換技術來實現發射光顏 - 色。波長轉換技術主要依據原理是，置於發光元件上的磷會吸收 : 從該發光元件發射的光，並發出波長與被吸收光不同的光。尤其 • 是，磷吸收發光元件發射的光後，會輻射具有不同發射光色的光 - 致發光(ph〇t〇— luminescence)。例如，以波長轉換技術為基礎的 鲁LED巾’從碰光元件發射的絲，局部或全部受顧響而發生波 長轉換。結果，轄射出顏色與藍光不同的光。例如，使用黃構時， 經由波長轉換得顺黃光可與未受波長觀的藍光混合，以提供 —種混合光。就理論而言’從led外部觀看時，此種混合光看似 白光。第二種方法的缺點在於，由於鱗層厚度相當小，所以鱗層 吸收的光量也小。因此，所發射的黃縣達到令人滿意顺 度。基於個原因’觀看者所感知的發射顏色並非預期的顏色， •亦即，並非白η色，而可能是帶藍或帶黃的白色(青白色或黃白色）。 口此：Ρ：好此有-種發光裝置可提供所需顏色的發射光，諸 如白光；並有-種操作此種發光裂置的方法’以提供更佳的演色 f生（color rendering)。 【發明内容】 本發明有關-種發光裝置，及操作此發魏置的方法， 用以克服先前技射的_與缺點所導致的—或多項問題。 根據本發明一實施例，i 負也妁八中棱供一種可發射白光或其它顏色 1323139 光的發光裝置。此裝置包括一第一發光器件用以發射具有第一波 . 長範圍之第一發射光，一第二發光器件用以發射具有第二波長範 • 圍之第二發射光，一第三發光器件用以發射具有第三波長範圍之 ； 第三發射光，及一第四發光器件用以發射具有第四波長範圍之第 四贿光；其巾’該第-、第二、第三、及第四波絲圍彼此不 . 同’並共同覆蓋可見光之光譜。 Φ 同樣根據本發明，其中提供一種可發射白光或其它顏色光的 發光裝置。此裝置包括一第一發光器件用以發射紅光，一第二笋 光器件用以發射綠光，一第三發光器件用以發射藍光，及一第四 發光器件用以發射琥珀光；其中，藉由組合該第一、第二、第三、 及第四發光器件而提供白光之發射。 進-步根據本發明，其中提供一種可發射白光或其它顏色光 的發光裝置。此裝置包括錄第-發光料㈣發射具有第一波 0 錄圍之第-發射光，多㈣二發絲件用以發射具有第二波長 乾圍之第二發射光’錄第三發光器件㈣發射具有第三波長範 圍之第三發射光，及多數第四發絲件用以發射具有第四波長^ •圍之第四發射光；其中，該等多數第-、第二、第三、及第= . 光器件係以行列矩陣方式排列，且該第一、第_、當— 乐一弟二、及第四 波長乾圍彼此不同，並共同覆蓋可見光之光譜。 同樣根據本發明，其巾提供—種方法用以操作—评射 或其它顏色光之發光裝置。此綠包括：從該發辭發 :件放射具有第—波絲圍之第_發射光，從該發紐置之第 =光器件放射具有第二波長朗之第二騎光’從該發光裝置 t光α。件放射具有第二波長範圍之第三發射光，從該發光 :置之細發絲件放射具有第讀長範圍之細發射光；混合 ^亥第-、第二、第三、及第四發光器件放射之光，以產生白發 •甘/樣根據本㈣’其巾提供—種綠肋操作-可發白光或 ^ L顏色仅發光裝置。此方法包括：從該發絲置之第一發光 2件放射紅發射光，從該發光裝置之第二發光器件放射綠發射 ，從該發光裝置之第三發光器件放射藍發攸，及從該發光震 置之第四發絲件放射琥；並混合從該第―、第二、第 二、及第四發光时放射之光，以產生自發射光。 β _發_容如下實施方式詳細酬，謂參_圖而獲 魯:更佳了解。為了以圖示說明本發明，附圖中顯示本發明目前而 言之較佳實施例。然而，本發明並不限於恰如圖中所 手段。 μ 【實施方式】 圖1Α為根據本發明一實施例之發光裝置1〇之概要圖。請參 ，圖1Α ’發光裝置1〇包括一第一發光器件，標號為r，用以提供 第:發射光，-第二發光器件，標號為G，用以提供第二發射光: -第三發光！I件’標號為B，㈣提供第三發射光，及—第四發光IX. INSTRUCTIONS OF THE INVENTION: TECHNICAL FIELD The present invention relates to a light-emitting device, and more particularly to a four-color light-emitting device capable of emitting white light and a method of operating such a four-color light-emitting device. [Prior Art] Light-emitting diodes (LEDs) are commonly used as light sources, illuminators, indicator lamps, and displays, and are well-known solid-state light-generating devices that generate light having a peak wavelength in a specific region of the spectrum. There are several reasons why LEDs are useful as a light source. LEDs are more mechanically intensive when compared to lamps/packages or neon lamps (fluorescent lamps) because they are generally resistant to greater shock or vibration. In addition, LEDs typically have a long life and reduce the frequency of replacement of damaged diodes. When you need to replace an LED, it is also more convenient than replacing the fluorescent light source. In addition, LEDs have the advantages of low power consumption, small size and light weight, so they can be used in various ugly displays, from backlights of liquid crystal displays to traffic signals and lights. It has been observed that LEDs that have been developed can emit red (r), green (G), and blue (B) colors, respectively. Since white is very important for the image display of the king color (fuU-eQlQr), in the conventional technique, at least two different square wires emit white light. In the first method, the filaments of the respective red, green, and iLEDs are mixed to provide self-emissive light or, if necessary, other hair loss. Fine, in the first method based on the red, green and blue color method, it may be difficult to provide the wave (yellow) color emission of Bo Weiwei in about 5 (nano) to noodle. In addition, the first method may also be difficult to provide a correlated color. 5 1323139 The temperature (CCT) is less than about 3,000. ((Kelvin absolute temperature) white emission light. • In the second method _, a wavelength conversion technique is used to achieve the emission color-color. The wavelength conversion technology is mainly based on the principle that the phosphorus is placed on the light-emitting element. It absorbs: light emitted from the light-emitting element and emits light having a wavelength different from that of the absorbed light. In particular, phosphorus absorbs light emitted from the light-emitting element and emits light having different emitted light colors (ph〇 For example, the Lu-LED towel based on the wavelength conversion technology 'waves emitted from the light-emitting element is partially or completely affected by wavelength conversion. As a result, the light emitted by the ray is different from the blue light. For example, for example. When the yellow structure is used, the yellow light can be mixed with the blue light that is not subjected to the wavelength by the wavelength conversion to provide a mixed light. In theory, when viewed from the outside of the LED, the mixed light looks like white light. The disadvantage of the two methods is that since the thickness of the scale is relatively small, the amount of light absorbed by the scale is also small. Therefore, the yellow county that is launched achieves a satisfactory smoothness. For one reason, the viewer perceives The emission color is not the expected color, ie, it is not white η color, but may be blue or yellowish white (blue-white or yellow-white). This: Ρ: Well, there is a kind of illuminating device that can provide the required The emitted light of a color, such as white light; and the method of operating such a light-emitting slit, to provide a better color rendering. [Invention] The present invention relates to a light-emitting device, and operates the same The method of the method for overcoming the problems caused by the _ and the disadvantages of the prior art. According to an embodiment of the invention, the y-negative yoke is provided for a light-emitting device capable of emitting white light or other color 1323139 light. The device includes a first light emitting device for emitting a first emitted light having a first wavelength, a second light emitting device for emitting a second emitted light having a second wavelength range, and a third light emitting The device is configured to emit a third wavelength range; the third emitted light, and a fourth light emitting device for emitting a fourth bribe having a fourth wavelength range; the towel's first, second, third, and The fourth wave No. Same as 'and collectively covering the spectrum of visible light. Φ Also according to the present invention, there is provided a light-emitting device capable of emitting white light or other color light. The device comprises a first light-emitting device for emitting red light and a second bamboo light. The device is configured to emit green light, a third light emitting device is configured to emit blue light, and a fourth light emitting device is configured to emit amber light; wherein, by combining the first, second, third, and fourth light emitting devices Providing a white light emission. Further, according to the present invention, there is provided a light-emitting device capable of emitting white light or other color light. The device comprises a first-emitting material (four) emitting a first-emitting light having a first wave 0 recording, (4) a second hair piece for emitting a second emitted light having a second wavelength dry circumference, wherein the third light emitting device (4) emits a third emitted light having a third wavelength range, and the plurality of fourth hair pieces are used for emitting Four wavelengths ^ • a fourth emitted light; wherein the majority of the first, second, third, and third optical devices are arranged in a matrix of rows and columns, and the first, the first, the _, the Brother II, and The four wavelengths are different from each other and collectively cover the spectrum of visible light. Also in accordance with the present invention, the towel provides a method for operating a light-emitting device that evaluates or otherwise colors light. The green includes: from the utterance: the first radiation emitted by the first wave of the first wave is emitted from the first light device, and the second light having the second wavelength is emitted from the light emitting device t light α. Radiating a third emitted light having a second wavelength range from which the fine hairline member emits fine emitted light having a first read length; mixing the second, second, third, and fourth illuminations The device radiates light to produce white hair • Gan/sample according to this (4) 'the towel provides a green rib operation - can emit white light or ^ L color only illuminating device. The method comprises: emitting red light from the first light emitting device of the hairline, emitting green light from the second light emitting device of the light emitting device, emitting blue hair from the third light emitting device of the light emitting device, and from the method The fourth hair-emitting member that emits light is radiated; and the light emitted from the first, second, second, and fourth light-emitting lights is mixed to generate self-emitting light. β _ hair _ capacity as detailed in the implementation of the following methods, said the _ map and get Lu: better understanding. In order to illustrate the invention, the preferred embodiments of the present invention are shown in the drawings. However, the invention is not limited to the means as illustrated. [Embodiment] FIG. 1A is a schematic view of a light-emitting device 1 according to an embodiment of the present invention. Please refer to FIG. 1A. 'Lighting device 1 〇 includes a first illuminating device, denoted by r, for providing: emitting light, and second illuminating device, denoted by G, for providing second emitted light: - third Glow! I piece 'is B, (4) provides third emission light, and - fourth illumination
讀’標號為A ’用以提供第四發射光。第…第三、第三、及第 四發射光各自之波長範gj彼此不同，但共同覆蓋可見光之光譜。 可見光光错包括之波長範圍落在大約·舰(奈米）至湖咖之 ^ 一刀佈從务'色經監色、綠色、黃色、橙色到紅色。在此範圍 外側是波長小於38Gnm的紫外線與波長大於職m的紅外線。根 j本發明—實施例巾’提供該第—發光器件r係為魏波長範圍 從大約_nm至64Gmn之紅光；提供該第二發光器件G係為發射 波長範圍從大約_nm至57Qnm之綠光；提_第三發光器件B 係為發射波長細從大約42Gnm至5GGnm之藍光；提供該第四發 光器件A係、為發射波長範_大約57()nm至_nm之如光。XThe read 'labeled A' is used to provide a fourth emitted light. The respective wavelength ranges gj of the third, third, and fourth emitted lights are different from each other, but collectively cover the spectrum of visible light. The wavelength range of visible light error is in the range of about ship (nano) to lake coffee ^ a knife cloth from the color of color, green, yellow, orange to red. On the outside of this range are ultraviolet rays having a wavelength of less than 38 Gnm and infrared rays having a wavelength greater than m. The invention provides that the first light-emitting device r is red light having a wavelength ranging from about _nm to 64 Gmn; and the second light-emitting device G is provided with an emission wavelength ranging from about _nm to 57 Qnm. Green light; the third light-emitting device B is a blue light having an emission wavelength fine from about 42 Gnm to 5 GGnm; and the fourth light-emitting device A is provided as a light having an emission wavelength range of about 57 () nm to _nm. X
本只施例中的發光器件R U “ ^口 /妖贯7t*二徑體，但 可包括其他發光元件’諸如無機發光元件、雷射二極體、無機薄 膜式電致發光片、及無_赋魏發光組件。第—、第二、第 三、第四發光器件r、g、b、a係用例如習知的晶片黏接(dieb〇nd⑽ 製程設置在-第-基座12上。引腳12_R、12G、12B、及m 從第-基座12延伸並穿透-基底14，其猶是作為—第一電極， 例如刀別作為第-、第二、第三、第四發光器件r、G、B、a之 陰極°第-、第二、第三、第四發光器mB、A各自經由一 金線15則丨線接合法接合至—第二基㈣,丨7從第二基座 2延伸並穿透基底14 ’其功能是作為-第二電極，例如，作為第 -、第二、第三、第四發光器0、G、B、A之共用陽極。引腳㈣ 1323139 12~G、12-B、12-A及17提供電力給發光器件R、G、B、A。發光 器件R、G、B、A係以例如制的射出成型法，完全包封在一透明 的聚合物或塑膠成型化合物18内。 圖1B顯不圖1A所示發光裝置1〇之俯視圖。圖1A及圖1B_ 不的是-燈型發絲置’係指—種包括多數引腳穿透__基底之發 光裝置。然而，本發明並不限於燈_途，而可同樣適用於晶片 型發光裝置’《包括多數⑽安·—基絲面之發光裳置。 圖2A、2B、2C為根據本發明另一實施例之發光裝置概要圖。 請參照圖2A ’發光裝置21包括多數第一、第二、第三、第四發光 器件R、G、B、A，其特性及功能已如前參關1A、m討論過。在 發光裝置21中’發綠件R、G、B、A係形成—行列矩陣。矩陣 之每一（橫）列包括以一周期性順序設置的第一、第二、第三、第 四發光11件R、G ' B、A。亦即’例如R_G_B_A之順序。根據本發 明另-實施财’該鱗之每—⑷行包括以—職性順序設置 的第一、第二、第三、第四發光器件R、G、B、A。 請參照圖2B，發光裝置22包括多數第一、第二、第三、第四 發光器件R Ί A形成-行列矩陣。矩陣之每—(橫）列僅包括 第-、第二、第三、第四發光器件卜㈠、A其中之―。更明確 地δ兒，弟一發光器件R係設置在第一歹I _ ’ 發光ϋ件G係設 置在第二列内’以此類推。請參照圖2C，發光裝置23包括多數第 -、第二、第三、第四發光器件R、G、B、A形成—行列矩陣。矩 陣之母-(橫)列包括第一、第二、第三、第四發光器件R、G、B、 A其中之兩種，而且與每—列直接相鄰的另-列係包括第-'第 二、第三、第四發光器件R、G、B、A其中之另兩種。更明確地說， 弟二及細發絲件。㈣設置在第1時第—及第三發光器 件R、B則設置在第二列内，以此類推。 圖3A為一色度座標系統（chrQmaticity —em) ’用以定義—彩色空間_顏色。提供圖^及圖3β之目 的’係為了能夠更佳理解根據本發明用來操作—發光裝置之方 法通系’發射光之色質可用多種不同評定系統測量之。「色度」 係用色調(hue)與彩度(saturation)來定義顏色。“ΠΕ，，是由國 際照明委員會發展出的-種色度座標系統。各個αΕ色度座標是 疋義位於1931 CIE”彩色空間内的顏色。這些座標被定義為χ、 y、z ’並分別為三個標準原色X、γ、汉三色激勵值计以― values)相對此三個三色激勵值總和之比。CIE圖表包含各個三色 激勵值與其總和之比X、y、Z的分佈圖。當約化座標χ、y、z總 加為1的情況時，通常使用二維CIE(X、y)圖。圖3A顯示其實例 之一。請參照圖3A，綠、藍、紅、白色大致分別位於CIE圖表之 上區、左下區、右下區、及中央區。 圖3B係從圖3A所示色度座標系統取得的普朗克曲線 (PlanckianCurve)圖。白色是LED顯不器中全色圖像顯示的重要 因素。各種像白的顏色(white-1 ike colors)可用一種「相關色溫」 1323139 (correlated color temperature, CCT)來說明。例如，當一金屬 被加熱時，會產生光放射出來，而放射光起初呈紅色無燄燃燒。The light-emitting device RU in the present embodiment is "^ port/wake 7t* two-diameter body, but may include other light-emitting elements such as inorganic light-emitting elements, laser diodes, inorganic thin film type electroluminescent sheets, and no_ The first, second, third, and fourth light-emitting devices r, g, b, and a are bonded to the first substrate 12 by, for example, conventional die bonding (dieb〇nd (10) process. The legs 12_R, 12G, 12B, and m extend from the first base 12 and penetrate the base 14 as a first electrode, for example, as a first, second, third, fourth light emitting device r The cathodes of the G, B, and a, the first, second, third, and fourth illuminators mB, A are each joined to the second base (four) via a gold wire 15 and the second base (four), and the second base The holder 2 extends and penetrates the substrate 14' and functions as a second electrode, for example, as a common anode for the first, second, third, and fourth illuminators 0, G, B, and A. Pins (4) 1323139 12 ~G, 12-B, 12-A, and 17 provide power to the light-emitting devices R, G, B, and A. The light-emitting devices R, G, B, and A are completely encapsulated in a transparent, for example, injection molding process. polymerization Figure 1B shows a top view of the illuminating device 1A shown in Fig. 1A. Fig. 1A and Fig. 1B_ No - lamp type hair ray 'type finger type - including most pin penetration __ The light-emitting device of the substrate. However, the present invention is not limited to the lamp-path, but is equally applicable to the wafer-type light-emitting device 'including the majority (10) An·-based surface of the light-emitting skirt. Figures 2A, 2B, 2C are based on A schematic diagram of a light-emitting device according to another embodiment of the invention. Referring to FIG. 2A, the light-emitting device 21 includes a plurality of first, second, third, and fourth light-emitting devices R, G, B, and A, and its characteristics and functions are as before. Guan 1A, m discussed. In the illuminating device 21, 'greening elements R, G, B, and A are formed—a matrix of rows and columns. Each (horizontal) column of the matrix includes first and second arranged in a periodic order. , third, fourth illuminating 11 pieces R, G ' B, A. That is, for example, the order of R_G_B_A. According to the present invention - the implementation of each of the scales - (4) line includes the first set in the order of occupation Second, third, fourth light emitting devices R, G, B, A. Referring to Figure 2B, the light emitting device 22 includes a majority first The second, third, and fourth light-emitting devices R Ί A form a matrix of rows and columns. Each (horizontal) column of the matrix includes only the first, second, third, and fourth light-emitting devices (a) and A of them. Specifically, the light-emitting device R is disposed in the first 歹I _ 'the illuminating element G is disposed in the second column, and so on. Referring to FIG. 2C, the illuminating device 23 includes a plurality of first and second The third and fourth light-emitting devices R, G, B, and A form a matrix of rows and columns. The mother- (horizontal) column of the matrix includes first, second, third, and fourth light-emitting devices R, G, B, and A The other two, and the other-column directly adjacent to each column includes the other two of the first-second, third, and fourth light-emitting devices R, G, B, and A. More specifically, brother 2 and fine hair. (4) When the first time is set, the first and third illuminators R and B are arranged in the second column, and so on. Figure 3A shows a chroma coordinate system (chrQmaticity - em)' used to define - color space_color. The color of the light emitted by the method of Fig. 3 and Fig. 3β for better understanding of the method for operating the light-emitting device according to the present invention can be measured by a variety of different evaluation systems. Chroma defines the color with hue and saturation. “Hey, it’s a colorimetric coordinate system developed by the International Commission on Illumination. The alpha Ε chromaticity coordinates are the colors in the 1931 CIE” color space. These coordinates are defined as χ, y, z ′ and are the ratio of the three standard primary colors X, γ, and the three-color excitation value to the sum of the three three-color excitation values. The CIE chart contains the distribution of the ratios X, y, and Z of each of the three color excitation values to their sum. When the reduced coordinates y, y, and z are always added to 1, a two-dimensional CIE (X, y) map is usually used. Fig. 3A shows one of the examples. Referring to FIG. 3A, green, blue, red, and white are respectively located in the upper area, the lower left area, the lower right area, and the central area of the CIE chart. Figure 3B is a Planckian Curve from the chromaticity coordinate system shown in Figure 3A. White is an important factor in the display of full-color images in LED displays. A variety of white-like colors (white-1 ike colors) can be described by a "correlated color temperature" (CCT). For example, when a metal is heated, light is emitted, and the emitted light is initially red and flameless.
當金屬加熱不斷升溫時，所發射的光轉變成更高的量子能，起先 是帶紅色的光，然後轉變成白光，最後終於變成青白光。有一種 系統已被研發用來判讀這些顏色在一稱為黑體放射源(b 1 ackbody radiator)的標準物件上的變化。視溫度而定，黑體放射源會發射 像白色的射線。然後可用CIE色度圖表說明此種像白色射線之顏 色。因此’對於欲鑑定的光源’其相關色溫即是黑體放射源產生 最類似光源色度之色度時的溫度。色溫與cct都是用克氏絕對溫 度(°K)表示的。請參照圖3B，亦請參照圖3A來對照其中的座標， 對於LED用途而言，所需的白發射光CCT值落在大約65〇〇〇κ。 此外，有一種經由視覺實驗建立的「演色指數」（c〇1〇r rendering index，CRI)。其中，先決定一受鑑定光源之相關色溫。 然後先用該光職亮八個鮮色樣，具有相同色溫的里體所 產生的光照亮這八個鮮色樣。料—鮮色樣未變色，則該光 源具有理論上完美的特殊CRI们〇〇。通用的演色指數稱為 Ra，是所有八個標準色樣的演色指數平均值。 圖4為-流程圖，顯示根據本發明—實施姻以操作一發光 裝置的方法。請參_，步驟41中，係提供—具有如前戶视第 一、第二、 43、44、45巾，分搬該發光裝置之第―、第二 12 Ιό'ΖόΙό^ 發光為件放射出各自具有第一、第二、第三、及第四波長範圍之 第、第二、第三、及第四發射光。在步驟46中，混合從第一、 ' 第二、第三、及第四發光器件放射出的發射光，以產生白發射光。 ： 該第一、第二、第三、及第四波長範圍彼此不同，並共同覆蓋可 見光之光譜。在一實施例中，該第一、第二、第三、及第四發光 • 器件分別發射紅光、綠光、藍光、琥珀光。 Φ 接著在步驟47中’於必要時，調整第一、第二、第三、及第 四發光器件之一的發射光強度，將具有第一相關色溫CCT值之白 發射光改變成第二CCT值。在本發明一實施例中所產生的白發射 光’其相關色溫可在大約1〇〇〇〇K至ι〇〇〇〇〇κ之間加以調整，產生 相車父於已往技術較佳的演色指數Ra。在另一實施例中，於調整發 射光強度時，係以一預定的光強比放射該第一、第二、及第三發 射光，而第四發射光之強度則調整到可獲得具有第二CCT值的白 馨 發射光。在一實施例中，該紅、綠、藍發射光之強度比約為 1:4. 59:0, 06。然後增加琥珀發射光之強度，使CCT值在圖犯所 示的普朗克曲線圖中朝較低溫方向變化；或者降低琥珀發射光之 強度，使CCT值在普朗克曲線圖中朝較高溫方向變化。 於再一實施例中，於調整發射光強度時，用以產生具有第一 CCT值之白發射光的第一、第二、及第四發射光強度維持不變，而 第三發射光的強度則調整到可獲得具有第二CCT值的白發射光。 例如，在一實施例中，紅、綠、琥珀發射光的強度不變，而藍發 13 1323139 射光強度增加，使CCT值在普朗克曲線圖中朝較高溫方向變化； 或者降低藍發射光之強度，使CCT值在普朗克曲線圖中朝較低溫 _ 方向變化。 ; 改變白發射光CCT值的方法’同樣適用於可見光光譜中白色 ·· 以外的其他顏色發射光。根據本發明一實施例中，係以一預定的 光強比放射該第一、第二、及第三發射光，而第四發射光之強度 鲁則調整到可獲得可見光光譜中的某一顏色發射光。在另一實施例 中’係選用第―、第二、第三及第四發光器件之-，並以一預定 的光強比從未被選取的發光器件放射其發射光。然後將選用的發 光器件放射的發射光強度，調整到可獲得可見光光譜中的某一顏 色發射光。 ' / 於》兒明本發明代表性的實施例時，說明書内可能是以特定順 序之步驟提th本發_方法或財。然而，當轉方法或程序並 不依賴本讀雜定步_树，本發财法或程序應不限於所 述特定步驟順序。此類技術界内的專業人士應可理解，1他+驟 順序也可能適用。因此，本說明書内說明的狀步驟順序^ 用來解釋射請專利顏之限制。此外，有關本發明方法或料 之專利請求項不應被限為執行所述順序之步驟 ·" 了解，此等順序可以改變，甘俏仅杜—丄 士可輕易 予丨貝斤T以改支亚仍保持在本發明精神與範圍内。 ”業界專技人士應可理解，上述各實_巾可作多種 脫離本發明廣義之概念。因此，本發明並秘於_特定實施例， 1323139 而係涵蓋本發明精神及範圍内的各種修改與變化，如所附申請專 利範圍所定義。As the metal heats up, the emitted light transforms into a higher quantum energy, first with reddish light, then into white light, and finally into a blue-white light. A system has been developed to interpret changes in these colors on a standard object called a b ackbody radiator. Depending on the temperature, blackbody sources emit white-like rays. This color like white ray can then be illustrated using a CIE chromaticity chart. Therefore, the correlated color temperature for the light source to be identified is the temperature at which the blackbody source produces the chromaticity most similar to the chromaticity of the source. Both color temperature and cct are expressed in terms of Kjeldahl absolute temperature (°K). Referring to FIG. 3B, please refer to FIG. 3A to compare the coordinates therein. For LED use, the required white emission light CCT value falls to about 65 〇〇〇. In addition, there is a "c演1〇r rendering index" (CRI) established through visual experiments. Among them, the color temperature of the identified light source is determined first. Then use the light job to brighten eight fresh color samples, and the light produced by the inner body with the same color temperature brightens the eight fresh color samples. Material—The fresh color sample is not discolored, and the light source has a theoretically perfect special CRI. The universal color rendering index, called Ra, is the average of the color rendering indices for all eight standard color swatches. Figure 4 is a flow chart showing a method of operating a light emitting device in accordance with the present invention. Please refer to _, in step 41, provide - with the first, second, 43, 44, 45 towels as in the former household, the first and second 12 Ιό 'ΖόΙό ^ illuminating of the illuminating device Each of the first, second, third, and fourth wavelength ranges of the second, third, and fourth emitted light. In step 46, the emitted light emitted from the first, 'second, third, and fourth light emitting devices is mixed to produce white emitted light. : The first, second, third, and fourth wavelength ranges are different from each other and collectively cover the spectrum of visible light. In one embodiment, the first, second, third, and fourth illumination devices emit red, green, blue, and amber light, respectively. Φ then, in step 47, 'adjusting the intensity of the emitted light of one of the first, second, third, and fourth light-emitting devices as necessary, and changing the white-emitting light having the first correlated color temperature CCT value to the second CCT value. In a certain embodiment of the present invention, the white emitted light 'the correlated color temperature can be adjusted between about 1 〇〇〇〇K and ι κ κ, resulting in better color rendering of the previous technology. Index Ra. In another embodiment, when the intensity of the emitted light is adjusted, the first, second, and third emitted light are emitted at a predetermined light intensity ratio, and the intensity of the fourth emitted light is adjusted to obtain the first Two white CCT values of white emission. In one embodiment, the intensity ratio of the red, green, and blue emitted light is about 1:4. 59:0, 06. Then increase the intensity of the amber emission, so that the CCT value changes toward the lower temperature direction in the Planck graph shown by the graph; or reduce the intensity of the amber emission, so that the CCT value is higher in the Planck graph. The direction changes. In still another embodiment, the intensity of the first, second, and fourth emitted light for generating white-emitting light having the first CCT value is maintained while adjusting the intensity of the emitted light, and the intensity of the third emitted light is maintained. Then it is adjusted to obtain white emitted light having a second CCT value. For example, in one embodiment, the intensity of the red, green, and amber emitted light is constant, while the blue light 13 1323139 increases the intensity of the light, causing the CCT value to change toward a higher temperature direction in the Planck graph; or reducing the blue emitted light. The intensity causes the CCT value to change toward the lower temperature _ direction in the Planck graph. The method of changing the CCT value of white emission light is also applicable to light emission of colors other than white ·· in the visible light spectrum. According to an embodiment of the invention, the first, second, and third emitted light are emitted at a predetermined light intensity ratio, and the intensity of the fourth emitted light is adjusted to obtain a certain color in the visible light spectrum. Emitting light. In another embodiment, the -, second, third, and fourth light-emitting devices are selected and radiated from the unselected light-emitting device at a predetermined light intensity ratio. The intensity of the emitted light emitted by the selected light-emitting device is then adjusted to obtain a certain color of the visible light spectrum. In the case of a representative embodiment of the present invention, it is possible to mention the method in a specific order in the specification. However, the present financing method or program should not be limited to the specific order of steps when the method or program does not rely on the stipulations. Professionals within such technology circles should be able to understand that the sequence of his + iterations may also apply. Therefore, the sequence of steps described in this specification is used to explain the limitations of the patent. In addition, the patent claims relating to the method or material of the present invention should not be limited to the steps of performing the sequence. " Understand, the order can be changed, and only the gentleman can easily give the 丨贝斤T to change Zhiya remains within the spirit and scope of the present invention. It will be understood by those skilled in the art that the above-described embodiments can be deviated from the broad concept of the present invention. Therefore, the present invention is not limited to the specific embodiment, and is intended to cover various modifications and variations within the spirit and scope of the present invention. Variations are as defined in the scope of the appended patent application.
15 v U23139 【圖式簡單說明】 圖1A為根據本發明一實施例之發光裝置概要圖； - 圖1B為圖ία所示發光裝置之俯視圖； 圖2A、2B及2C為根據本發明另一實施例之發光裝置概要圖； 圖3A為一色度座標系統，定義彩色空間内的顏色； 目3B#從圖3A所示色度座標系統取得的普朗克曲 • 及 ' 圖4為一流程圖，顯示根據本發明— 置的方法。 θ施例用以知作-發光裝 【主要元件符號說明】 發光裝置 R 第一發光器件(發射紅光） G 第二發光器件(發射綠光） • B 第三發光器件（發射藍光） A 第四發光器件(發射琥珀光） 12 第一基座 . 12-R引腳 . 12-G引腳 12-B引腳 12-A引腳 14 基底 16 1323139 15 金線 16 第二基座 17 引腳 18 透明的聚合物或塑膠成型化合物15 v U23139 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a schematic view of a light-emitting device according to an embodiment of the present invention; FIG. 1B is a plan view of a light-emitting device shown in FIG. 1A; FIGS. 2A, 2B and 2C are diagrams showing another embodiment of the present invention; FIG. 3A is a chromaticity coordinate system defining a color in a color space; and FIG. 3B# is a flow chart obtained from the chromaticity coordinate system shown in FIG. 3A and FIG. A method according to the invention is shown. θ example is used to know - illuminating device [main component symbol description] illuminating device R first illuminating device (emitting red light) G second illuminating device (emitting green light) • B third illuminating device (emitting blue light) A Four illuminating devices (emitting amber) 12 first pedestal. 12-R pin. 12-G pin 12-B pin 12-A pin 14 substrate 16 1323139 15 gold wire 16 second pedestal 17 pin 18 transparent polymer or plastic molding compound
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