Invention Grant
- Patent Title: Charged particle beam device and method for inspecting and/or imaging a sample
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Application No.: US16878271Application Date: 2020-05-19
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Publication No.: US11239043B2Publication Date: 2022-02-01
- Inventor: Dieter Winkler , Bernd Wöllert , Birgit Schabinger
- Applicant: ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH
- Applicant Address: DE Heimstetten
- Assignee: ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH
- Current Assignee: ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH
- Current Assignee Address: DE Heimstetten
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: H01J37/145
- IPC: H01J37/145 ; H01J37/244 ; H01J37/28 ; H01J37/32

Abstract:
A charged particle beam device for imaging and/or inspecting a sample is described. The charged particle beam device includes a beam emitter for emitting a primary charged particle beam; a retarding field device for retarding the primary beam before impinging on the sample, the retarding field device including an objective lens and a proxy electrode; and a first detector for off-axial backscattered particles between the proxy electrode and the objective lens. The charged particle beam device is adapted for guiding the primary beam along an optical axis to the sample for releasing signal particles. The proxy electrode includes one opening allowing a passage of the primary charged particle beam and of the signal particles, wherein the one opening is sized to allow a passage of charged particles backscattered from the sample at angles from 0° to 20° or above relative to the optical axis. Further, a method for imaging and/or inspecting a sample with a charged particle beam device is described.
Public/Granted literature
- US20210366683A1 CHARGED PARTICLE BEAM DEVICE AND METHOD FOR INSPECTING AND/OR IMAGING A SAMPLE Public/Granted day:2021-11-25
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