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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/1703


    Title: 雷射修整之高速檢測-於修整TFT-LCD SHORTING BAR電路上之應用;High Speed Inspection for Laser Trimming- Application for LCD SHORTING BAR Circuit
    Authors: 曾君華;Tseng Chun
    Contributors: 光機電工程研究所
    Keywords: 離散傅立葉;雷射修整;電路;高速檢測;影像模糊度;影像處理;Discrete Fourier Transf;Circuit;Laser trimming
    Date: 2009-07-02
    Issue Date: 2009-09-21 09:58:01 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 處理規則排列的金屬線經過加工(修整)後的切割寬度,本論文提出一種透過一維離散傅立葉轉換以及反離散傅立葉轉換,搭配影像統計法的處理方式,利用工業用CCD取得之影像,達到高速、準確的判斷加工結果(是否切斷)以及回報加工寬度的資訊。透過研究中所提之模糊度評價函數的使用,可針對某些因素(乘載平台機構的不穩定、CCD模組的晃動)導致的影像模糊情況加以剔除,進而提高處理影像的正確性以及可靠度。搭配雷射修整設備,可以即時反應修整結果,免除因修整錯誤而導致生產成本增加。進而提升雷射修整設備競爭力。 For the laser trimming width of thick film resistor (circuit), the image processing method combined with one dimension discrete Fourier transform and with image statistics is proposed. Via captured image from industrial CCD, the trimmed result and trimmed width are inspected with high speed and high accuracy. With the blur evaluation function, the blurred images are inspected and eliminated from normal cases, and the validity and accuracy can be increased. The blurred image is caused by unstable loading mechanism or vibration of CCD module. With the inspection method introduced in this research, the trimming error could be avoided, and the competitiveness of the laser trimmer could be significantly improved.
    Appears in Collections:[光機電工程研究所 ] 博碩士論文

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