Title page for etd-0811109-171108


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URN etd-0811109-171108
Author Chen-yi Lin
Author's Email Address bless0222@hotmail.com
Statistics This thesis had been viewed 5571 times. Download 2868 times.
Department Electro-Optical Engineering
Year 2008
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Design of liquid crystal cell gap measurement system
Date of Defense 2009-07-08
Page Count 108
Keyword
  • bias
  • external cavity diode laser
  • liquid crystal cell gap
  • Abstract This thesis use laser diode, lens, grating, and mirrors to composite the external cavity system to retrieve the thickness of the liquid crystal and its characteristics. This way is different to the traditional way of measure. It has good accuracy on the vertical resolution and the vertical resolution can reach to 0.3μm. At the same time, it can develop the high quality of horizontal resolution.
    On the basis of the correlation between the cavity length and the wavelength of the semiconductor laser, the system is capable of developing high horizontal resolution of accurate liquid crystal measurements. The horizontal resolution can reach to 40μm. Furthermore, by adding bias on liquid crystal through this system, it expanded more understandings on the influences of bias and induced electric field of the electrodes to the tilting angle of the liquid crystal.
    Advisory Committee
  • Ann-kuo Chu - chair
  • Tsung-hsien Lin - co-chair
  • Yi-jen Chiu - co-chair
  • Chao-kuei Lee - advisor
  • Files
  • etd-0811109-171108.pdf
  • indicate access worldwide
    Date of Submission 2009-08-11

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