Low dose charged particle metrology system
US11720030B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Oct 26, 2021 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Oct 26, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/2817
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods for conducting critical dimension metrology are disclosed. According to certain embodiments, a charged particle beam apparatus generates a beam for imaging a first area and a second area. Measurements are acquired corresponding to a first feature in the first area, and measurements are acquired corresponding to a second feature in the second area. The first area and the second area are at separate locations on a sample. A combined measurement is calculated based on the measurements of the first feature and the measurements of the second feature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.