Browsing by Author "Chiu, Chuang-Chien"

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THE CHEMICAL STAIN INSPECTION OF POLYSILICON SOLAR CELL WAFER BY THE FUZZY THEORY METHOD
(2013-08-01)
Lin, Chern-Sheng
;
Lin, Chih-Wei
;
Yang, Shih-Wei
;
Lin, Shir-Kuan
;
Chiu, Chuang-Chien
This study proposed an automatic optical inspection (AOI) technique to improve the inspection of chemical stains on solar wafers. Poly-silicon solar cell wafers were inspected for chemical stains, and the inspection was rapid and stable. The system used a laser-reflection-point-based AOI method for solar wafer chemical stain inspection. Based on the fuzzy theory, the image binarization algorithm could efficiently filter irrelevant image information, and the back-propagation method was also utilized to determine if the image was stained. The inspection algorithm integrated fuzzy theory and the back-propagation method in order to shorten the comparison time and quickly find the target. The experiment proved that the validity of the proposed method could achieve a recognition rate of 98% from among 1000 images.