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標題: 藍光晶粒特性對白光發光二極體影響之研究
Effects of blue LEDs characteristic on the luminance of white LEDs
作者: 陳政彬
Chen, Cheng-Ping
關鍵字: Light Emitting Diodes;發光二極體;Phosphors;Junction temperature;螢光粉;界面溫度
出版社: 精密工程學系所
引用: [1] F. M. Steranka, J. Bhat, and D. Collins, “High Power LEDs Technology Status and Market Applications,” phys. stat. sol. (a) vol. 194, pp. 380-388, 2002. [2] S. Nakamura, T. Mukai, and M. Senoh, “Candela-class high brightness InGaN/AlGaN double-heterostructure blue- light-emitting-diodes,” Appl. Phys. Lett., vol. 64, pp. 1687-1689, 1994. [3] 劉如熹,王健源,“白光發光二極體製作技術,”全華科技, 台北, 台灣, pp. 13-16, 2003. [4] S. G. Johnson and J. A. Simmons, “Materials for Solid- State Lighting,” Materials Research Society Spring Meeting, San Francisco, April, 1-5, 2002. [5] 施敏,“半導體元件物理與製作技術,”國立交通大學出版社, 新竹, pp. 59-63, 2003. [6] D. A. Skoog and J. J. Leary, “Principles of instrumental Analysis,”Saunders College Pub, 1992. [7] 柯以侃主編, “儀器分析,” 新文京開發出版股份有限公司, pp. 373-417, 2003. [8] G. Wyszecki and W. S. Stiles, “Color Science,” John Wiley & Sons, 1982. [9] Y. Ohno, “CIE Fundamentals for Color Measurements,” IS&T NIP16 International Conference on Digital Printing Technologies, Canada, Oct, 16-20, 2000. [10] CIE Publication, The Basis of Physical Photometry, 1983. [11] 史光國,“半導體發光二極體及固態照明,”全華科技, 台北, 台灣, pp. 18-30, 2005. [12] Q. Michael and S. Julian, “Semiconductor Manufacturing Technology,”培生教育出版集團, 2004. [13] M. Fukuda, “Reliability and Degradation of Semiconductor Lasers and LEDs,” Boston : Artech House, 1991. [14] L. Sugiura, “Dislocation motion in GaN light emitting devices and its effect on device lifetime,” J. Appl. Phys. vol. 81, pp. 1633-1638, 1997. [15] Y. Gu and N. Narendran, “A non-contact method for determining junction temperature of phosphor-converted white LEDs,” Third International Conference on Solid- State Lighting, Proceedings of SPIE 5187, pp. 107-114, 2004. [16] N. Narendran, Y. Gu, and R. Hosseinzadeh, “Estimating junction temperature of high-flux white LEDs,” Proceedings of SPIE 5366, pp. 158-160, 2004.
行封裝。在藍光晶粒波長459~464 nm範圍封裝結果:其光通量有0.2 lm變化,而x,y色度座標有±5%的變化。而在半高寬20~26 nm範圍封裝
,若在30分鐘以內進行烘烤,則 x, y 色度座標容易偏低且不穩定。
率都約有40%嚴重衰退,(2)x, y色度座標變小,(3)環境溫度直接影
本論文證實,若藍光晶粒波長分類±2 nm以內(如461±2 nm)進行
封裝,不會影響到LED發光特性,更何況公司的波長分類比±2 nm更

There are many kinds of methods to obtain white light
LEDs.In this thesis, the blue LED combined with YAG Cerium
phosphor was investigated. The goal of this study was to
understand the effects of the characteristic of blue light
LED, packaging process for white light LED and lifetime
test on the white light LED.
In terms of the characteristic of the blue light LED,
the LEDs with different wavelength and full width at half
maximum (FWHM) were packaged and investigated. For LEDs
with the wavelength 459~464 nm the result showed that the
luminous flux has 0.2 lm variation and x,y chromaticity
coordinates have ±5% variation. For the LEDs with the FWHM
20~26 nm the result showed that there's no difference on
the x,y chromaticity coordinates. The shorter FWHM have the
better luminance intensity.
In terms of the manufacturing process of the white light
LED, the major concern is the precipitate time of the
phosphor. The x,y chromaticity coordinates will be stability with control precipitate time 30 min later.
In terms of the lifetime test, luminance of the blue light LED will be degraded by the heat. The results of high
temperature revealed that (1) early 40% of the luminous
efficiency and output of luminous flux will be degraded,
(2) x,y chromaticity coordinates will be become lower,
(3) the LED junction temperature is influenced by the
environmental temperature.
其他識別: U0005-0808200623255600
Appears in Collections:精密工程研究所

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