本論文提出一種具複眼結構的新型雙層微透鏡，應用於提升有機發光二極體(OLED)之發光效能。首先以光學軟體進行分析，並結合田口法分析微透鏡的最佳化尺寸，使複眼微透鏡附加於OLED上能有效提升軸向發光強度，並增加±(0°~75°)處發光範圍的光強。以及提出創新製程製作複眼微透鏡，力求降低製作成本與方便精準。本論文的特點在於OLED透過複眼微透鏡的附加不僅可以有效提升整體的發光強度，更可將光線強度均勻化，而非僅在垂直方向有所增強。經過模擬結果得知四種模組的效能排比為：複眼微透鏡(17.82%)>平凸透鏡(9.65%)>單層高填充率微透鏡(8.57%)>單一OLED，附加經田口法最佳化尺寸的複眼微透鏡，其發光效率可提升27.3%。由模擬結果得知，複眼微透鏡藉由平凸透鏡的使用以增加整體透鏡的高徑比，更能凸顯效益的提升，另外表面佈滿高填充率微透鏡則可有效將光源均勻分佈。
在實驗部分，第一階段利用黃光微影製程與熱熔法製作微透鏡陣列，並藉由重複旋塗法，高速旋塗光阻得以完成100%填充率之微透鏡陣列，再透過PDMS翻模則可得到高填充率微透鏡陣列之光學薄膜。第二階段利用精密銑床銑切翻模之模具，再與光學薄膜以沖壓翻模法完成複眼微透鏡之製作。透鏡結構的外型與尺寸之特性可藉由光學顯微鏡(OM)、3D表面輪廓儀(3DProfiler)與掃描式電子顯微鏡(SEM)量測。製作波長約為550nm的綠光OLED後再與複眼微透鏡相互配置。
最後的光學檢測部分，利用PL光激發光光譜儀先測得PDMS複眼微透鏡的透光率平均為98.69%，再將複眼微透鏡附加於OLED上進行效能檢測，以調整電壓0V~12V所輸出的結果做擷取，其提升OLED平均77.589%的發光效能。

This study has presented a new type of double-layer structure with compound eye microlens which is used to enhance the luminous efficacy of organic light-emitting diode (OLED).At first, the optical software combining with Taguchi method was used to evaluate some different types of microlens model and optimize the microlens size. The optical simulation would intend to improve the light intensity of OLED in both axial angle and viewing angle ± (0°~75°).Then experiment was conducted to propose an innovative process to fabricate compound-eye microlens, and reduce production cost and accuracy. The experiment would aim to indicate that the new microlens applied to OLED not only could enhance luminous in the vertical direction but also could improve the overall luminous intensity and provide more uniform light intensity.
The simulation results showed that four kinds of model have different intensity efficiency. In comparing with single OLED, the intensity efficiency of the compound-eye microlens, the plane-convex lens, and the plane high fill factor microlens have increased about 17.82%,9.65%, and 8.57% respectively. In the other hand, the robust design by Taguchi method has provided another compound-eye microlens with different size, which could improve the luminous efficiency of 27.3%. According to the simulation results, compound-eye microlens with plane-convex microlens structure could directly increase the overall aspect ratio and the luminous efficiency. In addition, surface of lens covered with high fill factor microlens could effectively provide uniform distribution of the light source.
In the experiment, the first stage was the photolithography process and photoresist reflow which were used to finish the microlens array. After that, by repeating the spin coating method, the high-speed spin coating photoresist layer was completed 100%fill factor of the microlens array. Then the optical film of the high fill factor microlens array could be obtained through the PDMS molds. The second stage was using a precision milling machine to manufacture a special mold. After the optical film was stamped into that mold, the PDMS was poured to complete the production of compound-eye microlens. The geometry contour and size of the lens structure would be measured by using optical microscopy (OM), 3D surface profiler(3DProfiler) and scanning electron microscopy (SEM) measurements. A green light OLED, which had wavelength about 550nm,was used to collocate with the compound-eye microlens.
Finally, the optical detection was conducted. The PDMS compound- eye microlens light transmittance was measured by using Photoluminescence Emission Spectrometer. The result showed that the average light transmittance is 98.69%.After that the microlens was attached to OLED in the voltage input from 0V ~ 12V,the luminous efficacy would enhance about 77.589%.

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