实验计画法在碘系偏光膜延伸染色制程条件之研究.doc

實驗計畫法在碘系偏光膜延伸染色製程條件之研究 The Study of Iodine Contained Polarizer’s Stretching and Dyeing Process via the Design of Experiment 　 李世彪、張淑美* Michael Lee and Shu-Mei Chang 台北科技大學 有機高分子研究所 摘要 TFT LCD液晶顯示器目前已成為台灣繼晶圓代工產業之後最重要的新興產業，而目前的液晶顯示器都是利用偏極光作為光源，偏光膜的功能就是將背光板光源所發出的非偏極光轉為偏極光，因此偏光膜為生產液晶顯示器不可缺少的重要元件。D.O.E (Design Of Experiment)實驗計畫法針對碘系偏光膜在延伸與染色製程條件研究，實驗樣本以440 nm, 550 nm, 610 nm單體透過率，直交透過率與偏光率等光學性質作為實驗結果分析依據。實驗第一階段以經過選擇的製程參數作為實驗因子以L827 2水準直交配列表(orthogonal array)與變異數分析(ANOVA, The Analysis Of Variance)判斷實驗因子的顯著與非顯性,並利用多特性值分析決定製程參數中的顯著因子，製程參數中的非顯著因子以L827 2水準交配列表實驗結果來決定最佳水準。實驗第二階段以製程參數中的顯著因子以L934直交配列表進行3個水準實驗，由實驗結果找出最適化製程條件。由本次研究所得到最適化製程參數條件其實驗結果在Yc (直交透過率)可達到0.0073%，V(偏光率)可達到99.90 %此2項光學特性值均已達到目前市售TFT LCD用碘系偏光膜的標準。 關鍵詞：碘系偏光膜、實驗計畫法、延伸與染色 投稿受理時間: 92 年 10 月 15 日 　　　　 　　　 審查通過時間: 93 年 1 月 19 日 Abstract In this research, we apply the methodology “Design of Experiment” to find optimized manufacturing parameters for Iodine contained polarizer on the process of stretching and dyeing. Experimental results have been analyzed by the polarized optical properties based on the measurements of cross and parallel transmittance at the wavelength of 440 nm, 550 nm and 610 nm respectively. In the first stage, the dominated factors and the percentage contribution are decided from the analysis of L827 orthogonal array and ANOVA (the Analysis Of Variance). Followed the comparison of the “Cross table”, the best process controlled levels are selected out. In the second stage, applying the dominated factors to the analysis of L934 orthogonal array, the optimized process recipe is given. According to the optimized process recipe, the fabricated polarizer is achieved to have the optical properties of Yc (cross transmittance) at 0.0073 % and V (polarized efficiency) at 99.9 %, which have been satisfied the specification for the TFT LCD market. Keywords: D.O.E, Iodine linear polarizer, Stretch, dyeing  一、簡介 何謂實驗計畫法 “實驗計畫法”的應用來源其鼻祖應屬1920年代研究育種的科學家Dr. Fisher，，，DOE在工業界能普及與發揚光大者，Dr. Taguch（日本田口玄一博士）莫屬