Patent ID: 11885608
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. An inspection device for inspecting a semiconductor device, the inspection device comprising an ellipsometer,
wherein the ellipsometer comprises:
a polarizing optical element, comprising a prism, that is configured to split reflected light into two linearly polarized components of light having polarization directions orthogonal to each other, the reflected light generated by reflecting illuminated light, including linearly polarized light, from a measurement surface of a sample,;
an interference member, comprising at least one body, that is configured to form an interference fringe in which the two linearly polarized components of light interfere with each other in directions different from the polarization directions;
an image detector configured to detect the interference fringe; and
an analysis device comprising at least one processor, the analysis device configured to calculate ellipsometry coefficients Ψ and Δ based on the interference fringe that is detected.