Cell Filling Of Flexible Liquid Crystal Display Using Continuous Air-Extracting Method

• Main Authors: Chia-Jen Chang, 張嘉仁
• Other Authors: Ching-Ming Hsu
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/11877022267306248145

碩士 === 南台科技大學 === 光電工程系 === 97 === LCD is the most popular of flat-panel display in the market. Now technologies are being developed to achieve large size, thin and flexible LCD displays. The currently used liquid crystal cell filling technology includes one drop filling (ODF) and conventional vacuum siphon method. However, the conventional method is not suitable for large size panel, because it needs long LC filling time. The use of ODF is too expensive and complicated in handling the flexible substrate. Therefore, developing a new LC cell filling method to drive flexible LCD a step forward to commercialization is essential This study uses so-called Continuous Air-Extracting Method to fill liquid crystal cell. This method can conduct liquid crystal filling in atmospheric environment, requiring no long filling time as the conventional method and less expensive than with the ODF method. The cell pressure, cell aperture width, cell flow channel, spacer density, cell tilt angle and cell temperature were varied for obtaining the optimized filling efficiency. The best filling conditions were cell pressure = 2 torr, cell aperture width = 9 mm, symmetrical 1-1 port arrangement, spacer distribution density = 300~400 pcs/mm2, cell tilt angle = 45°. The best filling time of 43 sec at cell temperature = 75℃.