以消費者觀點探討亮點缺陷對TFT-LCD畫面品質之影響

Effects of Light Dot Defects on Customer Perception of TFT-LCD Picture Quality

林霈籈(Pei-Chen Lin)

指導教授 ： 梁曉帆

國立臺北科技大學/管理學院/工業工程與管理研究所/碩士(2008年)

摘要

本研究藉由對人類視覺系統之理論基礎與ISO 13406-2平面顯示器規範的探討，並利用凝視追蹤系統與問卷為記錄工具，瞭解亮點缺陷的數目與位置對於消費者判定畫面品質的影響。實驗分為兩階段：第一階段在於確認凝視注意力在螢幕分佈的情況。經變異數檢定，發現凝視時間由螢幕中心向外至螢幕周圍遞減。因此，第二階段實驗將螢幕由中心至周圍分成等面積之三個區域，配合ISO 13406-2對於亮點缺陷數目的規範，設計出不同亮點缺陷的數目與位置之畫面，並要求受測者進行兩兩比較其畫質並填答問卷。實驗結果證明亮點缺陷的數目與位置分別對於消費者判定畫面品質都有顯著的影響，即亮點缺陷的數目愈多或是位置愈接近螢幕中心區域，則畫面品質愈差。而亮點缺陷的數目與位置對於消費者畫面品質的判定也有部分的交互作用存在，即有些亮點缺陷的數目較多但位置較在螢幕周圍之畫面品質反而較缺陷數目較小但位置較在螢幕中心之畫面品質來的好。

關鍵字

薄膜電晶體液晶顯示器 ； 視覺系統 ； ISO 13406-2 ； 畫質

並列摘要

To understand the effects of the number and the location of light-dot defects on the perception of picture quality, the theoretical background of human visual systems and the ISO 13406-2 standard were reviewed in the research. A gaze tracking system and a questionnaire were applied as the tools for collecting the data. An experiment with two phases was designed. In the first phase, three areas with the same size from the center to the periphery were identified with different durations of gaze. In the second phase, screens with different picture qualities in terms of the number and the location of light-dot defects were designed for subjects to make pairwise comparisons. Results showed that picture qualities were decreased as the number of defects was increased, and as the defects were near the center area of the screen. A partial interaction effect was also found between the number and the location of the defects. That is, some picture qualities of screens with more number of defects but located in the peripheral area were better than the ones with less number of defects but located in the central area.

並列關鍵字

TFT-LCD ； Visual Systems ； ISO 13406-2 ； Picture Quality

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