发明名称 |
METHOD AND APPARATUS FOR DETECTING CRYSTAL ORIENTATION OF SILICON WAFER |
摘要 |
A method and apparatus for detecting crystal orientation of a silicon wafer is proposed. The detection method uses a camera shooting device to irradiate the silicon wafer in a rotation manner in different angular directions and obtains the corresponding reflection intensities, based on which a reflection curve is drawn for a grain of interest in a polar coordinate system; normal directions of three or more faces of a regular octahedron of a grain <111> are determined by identifying a pixel brightness extreme value in the reflection curve, and then all normal vectors of the regular octahedron are calculated, so that a crystal orientation of the grain of interest may be calculated. The camera shooting device has a light source and one or more camera shooting probes. |
申请公布号 |
US2017039696(A1) |
申请公布日期 |
2017.02.09 |
申请号 |
US201415303386 |
申请日期 |
2014.05.13 |
申请人 |
CHANGZHOU TRINA SOLAR ENERGY CO., LTD. |
发明人 |
FU SHAOYONG;XIONG ZHEN |
分类号 |
G06T7/00;G06K9/46;H04N5/225;G01N21/84;G01N21/55 |
主分类号 |
G06T7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
CHANGZHOU, JIANGSU CN |