Title page for etd-0714109-154606


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URN etd-0714109-154606
Author Kun-ming Tsai
Author's Email Address No Public.
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Department Electro-Optical Engineering
Year 2008
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Analysis and prototyping micro-structured periodic light guides produced by plastic molding
Date of Defense 2009-06-17
Page Count 93
Keyword
  • micro-structures
  • prototyping
  • Abstract With the constantly evolving displayer technology, the liquid crystal displayer (LCD) has become widely utilized on the market. As a result, the demand for high-performance LCDs is on the rise. In addition to the color quality and contrast ratio, the brightness of a LCD is also an important issue in LCD applications. Since light source of the LCD depends on the backlight module, it is important to develop efficient a backlight module to improve the brightness of the LCD.
    The light guide plate (LGP), which makes use of our previously proposed step micro-structure, has two problems. The first is that the thickness limits the dimension of the LGP. The other is that the complex manufacturing process is not suitable for mass-production. Due to these difficulties, we proposed a new design containing periodic trapezoid micro-structures. The periodic micro-structures can be easily fabricated by the ejection-set process. In addition, the dimension of the LGP will not be limited by this new design.
    In this thesis, we will analyze the performance of our proposed structure and discuss the factors which might affect the output light intensity of the LGP. We made a few dozen prototyping LGPs and measured the output brightness of produced by these periodic micro-structures. The apparent transparent nature of our proposed LGPs is due to the fact that the dimension of the micro-structure is close to the wavelength. Thus the applications of the new LGPs are no longer limited to the LCD backlight modules. It can be also be used for example, as the reading light plate.
    Advisory Committee
  • Hidenori Taga - chair
  • Chin-Ping Yu - co-chair
  • Nai-Hsiang Sun - co-chair
  • Hung-Wen Chang - advisor
  • Files
  • etd-0714109-154606.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2009-07-14

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