白光有機發光二極體面光源光強分佈參數模型

Parametric Modeling of a White Organic Light-Emitting Diode as a Lighting Source

李偉聖(Wei-Sheng Li)

指導教授 ： 楊恆隆

國立臺北科技大學/電資學院/光電工程系研究所/碩士(2014年)

摘要

我們將白光有機發光二極體(WOLED) 10×10mm2樣本之相對光強分佈與相對位置關係的結果數據，利用分佈函數特性以及數值擬合的方式建立WOLED面光源光強分佈參數模型。
先前實驗以顯微測角儀系統結合能量分析儀，針對兩個不同的WOLED樣本進行光強分佈的量測。實驗結果發現，兩樣本的光強分佈在不同測量方向都一致呈現中心高於邊緣兩側，並近乎左右對稱的分佈。
因此我們利用簡形法(Simplex)和高斯分佈函數對實驗量測結果進行數值擬合，得到高斯分佈函數中幅值A、平均數μ和標準差σ的最佳擬合參數值，再以指數分佈函數和萊文貝格－馬夸特(Levenberg-Marquardt)擬合法驗證擬合的正確性，並建立出WOLED面光源光強分佈參數模型。
最後我們將WOLED面光源光強分佈參數模型與現有的LED背光源分佈實例進行討論，以此模型預測大尺寸WOLED面光源光強分佈是否符合LED背光源模組對於最低均勻度75%的規範。並預測當此WOLED面光源光強分佈模型使用與實驗量測元件相同製程的條件下，在均勻度規範內所能達到的最大WOLED面光源尺寸為15×15mm2。

關鍵字

白光有機發光二極體 ； 面光源 ； 光強 ； 光學分佈 ； 參數模型

並列摘要

This thesis establishes an optical intensity distribution parametric model of planar WOLED lighting source by fitting the experiment data measured from WOLED samples with 10×10mm2 area.
In the previous experiment, we use the microscopic goniometer (MG) system and an energy analyzer to measure the relative optical intensity distributions. The results measured from two independent WOLED samples reveals a unique distribution in which the relative intensity in central area is higher than that near the edge around emitting area.
The experiment data was numerically fitted by the Simplex method and Gaussian distribution to acquire the parameters, then we verify the fitting result by the Levenberg-Marquardt method and Exponential distribution and finally establish the optical intensity distribution parametric model of planar WOLED lighting source.
We compare this optical intensity distribution parametric model of planar WOLED lighting source with the products of LED backlight module, and confirmed if the optical intensity distribution of planar WOLED lighting source with bigger area follows the 75% uniformity specification of LED backlight module. In the same manufacturing process with the sample measured previously, the biggest WOLED area predicted by this optical intensity distribution parametric model of planar WOLED lighting source is 15×15mm2, which follows the 75% uniformity specification of LED backlight module.

並列關鍵字

White Organic Light-Emitting Diode ； Planar Lighting Source ； Optical Intensity ； Optical Distribution ； Parametric Modeling

參考文獻

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