Multiple-functional and cost-effective liquid-crystal cell parameter measurement system

Gao Wei Chang*, Yu Hsuan Lin, Zong-Mu Yeh


研究成果: 書貢獻/報告類型會議論文篇章

1 引文 斯高帕斯(Scopus)


For years, the technology of TFT-LCDs (thin-film-transistor liquid crystal displays) has grown very rapidly, especially in the market share and technical development of FPD industries. To effectively promote the industry's capacity for the mass production and quality control, it is urgent to design and develop LC cell optical parameter measurement systems. The goal of this paper is to develop a multiple-functional and cost-effective measurement system to lower the manufacturing cost for the industry. The optical parameters includes the pretilt angle, liquid crystal (LC) cell gap (or phase retardation), and twist angle, which highly influence the display quality. In this paper, we first study the past approaches and analyze their measurement performance. Then, a simple and cost-effective method is proposed to achieve the multiple functions. That is, in addition to the precise measurement of the three important optical parameters, the proposed system can measure the voltage-transmittance (V-T) curve. In our approach, the theoretical study, simulation, and experiment are performed to show the feasibility of the system implementation. Finally, the proposed system is developed to automatically measure the LC cell parameters. Experimental results indicate that the proposed measurement system gives a satisfactory result.

主出版物標題Emerging Liquid Crystal Technologies II
ISBN(列印)081946600X, 9780819466006
出版狀態已發佈 - 2007
事件Emerging Liquid Crystal Technologies II - San Jose, CA, 美国
持續時間: 2007 1月 212007 1月 24


名字Proceedings of SPIE - The International Society for Optical Engineering


其他Emerging Liquid Crystal Technologies II
城市San Jose, CA

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 電腦科學應用
  • 應用數學
  • 電氣與電子工程


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