High-performance inspecting system for detecting micro-crack defects of solar wafer
Kona, HI(2010)
摘要
A novel inspecting system combining a tunable exposing unit for inspecting micro-cracks of solar wafers is proposed. With the infrared ray transmitting through silicon wafers, the inspecting images will be captured by a CCD camera, and the micro-crack defects from the images will be apparently appeared. So it can easier to precisely distinguish either micro-cracks or grain boundaries from the images by certain algorithms. This inspecting system is especially effective when the thickness of the multi-crystalline silicon wafer is not constant. Furthermore, this system is also useful for controlling quality in on-line process of solar cell production.
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关键词
automatic optical inspection,microcracks,quality control,semiconductor device manufacture,wafer bonding,ccd camera,high-performance inspecting system,microcrack defects detection,multicrystalline silicon wafer,silicon wafers,solar cell production,histograms,silicon wafer,infrared,silicon,inspection,grain boundary,manufacturing,image processing
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