Invention Grant
- Patent Title: High accuracy beam placement for local area navigation
- Patent Title (中): 用于局部导航的高精度光束放置
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Application No.: US14332193Application Date: 2014-07-15
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Publication No.: US09087366B2Publication Date: 2015-07-21
- Inventor: Richard J. Young , Chad Rue , Peter D. Carleson , Reinier Louis Warschauer
- Applicant: FEI Company
- Applicant Address: US OR Hillsboro
- Assignee: FEI COMPANY
- Current Assignee: FEI COMPANY
- Current Assignee Address: US OR Hillsboro
- Agency: Scheinberg & Associates, PC
- Agent Michael O. Scheinberg; John B. kelly
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06T7/00 ; H01J37/22 ; H01J37/28 ; H01J37/304 ; H01L21/66

Abstract:
An improved method of high accuracy beam placement for local area navigation in the field of semiconductor chip manufacturing. Preferred embodiments of the present invention can also be used to rapidly navigate to one single bit cell in a memory array or similar structure, for example to characterize or correct a defect in that individual bit cell. High-resolution scanning is used to scan only a “strip” of cells on the one edge of the array (along either the X axis or the Y axis) to locate a row containing the desired cell followed by a similar high-speed scan along the located row (in the remaining direction) until the desired cell location is reached. This allows pattern-recognition tools to be used to automatically “count” the cells necessary to navigate to the desired cell, without the large expenditure of time required to image the entire array.
Public/Granted literature
- US20150016677A1 HIGH ACCURACY BEAM PLACEMENT FOR LOCAL AREA NAVIGATION Public/Granted day:2015-01-15
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