在液晶面板顯示器(LCD)產業中，由於面板尺寸逐漸隨市場的需求，有明顯往大型面板增加的趨勢，之前的傳統液晶注入製程，因較為耗時及耗材料量，目前已逐漸轉為利用滴下式注入法(ODF)所取代，此方法可大幅降低灌液晶的時間與節省液晶材料的量。
本論文主要討論的是在製造液晶顯示器的過程中於執行液晶注入製程時在LCD面板上面各個顯示點所滴下之液晶量的檢測。本研究係利用單一顆CCD來取得LCD面板上各個顯示點滴下液晶後之影像，經適當的影像處理後，求得各個顯示點之二維覆蓋面積，用以推導出每個顯示點上實際液晶的量，同時也對各顯示點之外觀做一檢查以確認品質。經由實驗驗證，本研究所提出的方法確實與實際液晶量有絕對的比例關係，利用此方法不僅能測得液晶滴下的量，誤差可控制在一定範圍以下，同時也可做相對位置及外觀特徵之辨識確認，這對於使用檢測自動化以降低人力成本，具有正面之幫助。

Due to the trend of market demand, the requirement of larger size of display panel is increased in the liquid crystal display (LCD) industry. However, the traditional liquid crystal injection process consumes much time and liquid material. It is replacing by the new process called One Drop Fill (ODF) process. This new process can save liquid crystal (LC) and injection time significantly.
The purpose of this research is to apply digital image processing technique to check the liquid quantity of each display point on the LCD panel during the ODF process. Single CCD is adapted to get the image of the liquid injected panel. After proper image processing applied, the cover area of the liquid for each display point can be estimated. A relationship between the liquid quantity and the cover area is created. Then the cover area can be used to estimate the dropped liquid quantity. Meanwhile the layout of the panel can also be checked via the image. According to the experimental results, the error rate of the liquid quantity via the proposed method is under 5%. It is shown that the proposed method is not only an effective method, but also can check the layout pattern of the panel. This will be a great help in inspection automation for reducing the cost of manpower.

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