The Research on the Most Appropriate Temperature Condition for UV reforming process in Liquid Crystal Display by Taguchi method

• Main Author: 石文斌
• Other Authors: 王宜明
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/54401467838595642723

碩士 === 國立彰化師範大學 === 機電工程學系 === 98 === Abstract This paper is dealing with the finding of the most appropriate temperature conditions for the UV reforming process in liquid crystal Display (LCD). The UV reforming process is to be used to increase the contrast ratio of LCD. It is known that the circumstance temperature is a crucial role during the reforming process. The surface temperature of glass substrate has to be controlled under 40 , and the allowable value of temperature difference of glass substrate should be within +/- 5 . Therefore, the Taguchi method is employed to investigate the influence produced by the adjustment of related devices to the temperature during the UV reforming process, and thereafter finding the optimal parameter tuning model. In addition, with the aid of specialized characters analysis together with working experience, eight controllable factors are found. The optimal temperature related parameters are also obtained by analyzing the results of experiments. By the use of additive model to predict the actual improvement benefit in the process via these optimal parameters, and then verifying those values with the experimental results. It shows that the uniformity of surface temperature is significantly affected by the interval between UV lamps and the air blowing capacity from air-box. The prediction difference between the result from experiments and the values from additive model is tiny. Hence, the result of this study provides useful information to further design. Keywords: Taguchi method, additive model forecast