发明授权
- 专利标题: Alignment mark and method of getting position reference for wafer
- 专利标题(中): 对准标记和获取晶片位置参考的方法
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申请号: US12203310申请日: 2008-09-03
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公开(公告)号: US07916295B2公开(公告)日: 2011-03-29
- 发明人: Chiao-Wen Yeh , Chih-Hao Huang
- 申请人: Chiao-Wen Yeh , Chih-Hao Huang
- 申请人地址: TW Hsinchu
- 专利权人: MACRONIX International Co., Ltd.
- 当前专利权人: MACRONIX International Co., Ltd.
- 当前专利权人地址: TW Hsinchu
- 代理机构: J.C. Patents
- 主分类号: G01B11/00
- IPC分类号: G01B11/00 ; H01L23/544
摘要:
An alignment mark on a wafer is described, including at least one dense pattern and at least one block-like pattern adjacent thereto and shown as at least one dark image and at least one bright image adjacent thereto. A method of getting a position reference for a wafer is also described. An above alignment mark is formed. The alignment mark, which is shown as at least one dark image and at least one bright image adjacent thereto that are formed by the at least one dense pattern and the at least one block-like pattern, is then detected.
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