小尺寸面板 框膠塗佈缺陷改善研究

Abstract

框膠塗佈製程包含膠材的充填、面板設計需求的塗佈位置及其塗佈膠量的控制、塗佈後框膠外觀的檢查等步驟。框膠製程主要是依據膠材黏度特性來設定機台塗佈參數，而其膠材黏度亦會受到環境溫度影響，於生產過程中，會依據塗佈量的監控來確認膠材黏度變化，並適時進行塗佈壓力及速度等參數的調整。 其中塗佈缺陷的成因與改善是本研究之重點，而本研究主要考量設備機構運作、塗佈用針頭與環境溫度來探討塗佈相關及不穩的缺陷問題。方法上，運用的六標準差(6 sigma)DMAIC的概念，藉由操作塗佈機台鏡頭來觀察塗佈後之膠形(組立貼合前)，並以設備機台的斷面積雷射量測膠材塗佈量，後續於玻璃基板組立貼合、框膠熱硬化後，以顯微鏡確認固著成形後之框膠缺陷外觀，藉上述三種基本步驟，探討塗佈缺陷的成因。 經由觀察及量測結果，我們找出造成缺陷的成因，並經由實驗設計來分析、驗證問題點。依據實驗結果，我們找到改善塗佈穩定性的方式，並使缺陷得到穩定的控制。

The seal dispenser process is one of the CELL process. It includes the filling process of sealant、the design rule of dispensing patterns、controlling and checking the accuracy of seal width. To adjust the parameter of recipes by viscosity that is made changes with rising and decreasing temperatures. Operators monitor the condition of seal width to adjust parameters that are the pressure of N2 gas and speed of stage. To control the accuracy of seal width in seal dispenser process is the most important topic. To find the factor of defects and improve the issue of production is the focal point about this study. To study the issue of seal dispenser process is under considerations that are the operation of machine and temperature in the FAB. In order to improve the issue of seal dispenser process，this study introduced the six sigma DMAIC methodology. We check the accuracy of seal width by the camera and microscope，and monitor the cross-sectional area by a laser sensor. From the result that includes checking and measuring，we define and analyze the factor of issue. And to design the experiment, we get the data by an instrument and analyze it. From the experiment result, we find the factor of defect and obtain the improvement about the accuracy of seal width. And we will control the improvement to get it stable.