Semiconductor analysis system
AssigneeHitachi High-Tech Corporation
InventorsYudai Kubo, Tsunenori Nomaguchi, Hiroyuki Chiba
Life of this patent
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Abstract
A semiconductor analysis system includes a machining device that machines semiconductor wafer to prepare a thin film sample for observation, a transmission electron microscope device that acquires a transmission electron microscope image of the thin film sample, and a host control device that controls the machining device and the transmission electron microscope device. The host control device evaluates the thin film sample based on the transmission electron microscope image, updates machining conditions based on an evaluation result of the thin film sample, and outputs the updated machining conditions to the machining device.
Claims9
A semiconductor analysis system comprising:
- a machining device that machines a semiconductor wafer to prepare a thin film sample for observation;
- a transmission electron microscope device that acquires a transmission electron microscope image of the thin film sample;
- a host control device that controls the machining device and the transmission electron microscope device, wherein the host control device evaluates the thin film sample based on the transmission electron microscope image, updates machining conditions based on an evaluation result of the thin film sample, and outputs the updated machining conditions to the machining device;
- and
- wherein:
- the machining device includes a scanning electron microscope device that acquires a scanning electron microscope image;
- the host control device includes a determination unit that performs a first pass or fail determination process of machining end point detection for the thin film sample based on the transmission electron microscope image, a learning device that generates a learning model for performing the machining end point detection by comparing a first pass or fail determination result of the machining end point detection in the determination unit with the scanning electron microscope image, and a machining control unit;
- the learning device uses the learning model to perform a second pass or fail determination process of the machining end point detection for the thin film sample based on the scanning electron microscope image;
- and
- the machining control unit gives an instruction to the machining device to continue machining or end machining based on the second pass or fail determination result of the machining end point detection in the learning device.
A semiconductor analysis system comprising:
- a machining device that machines a semiconductor wafer to prepare a thin film sample for observation;
- a transmission electron microscope device that acquires a transmission electron microscope image of the thin film sample;
- a host control device that controls the machining device and the transmission electron microscope device, wherein the host control device evaluates the thin film sample based on the transmission electron microscope image, updates machining conditions based on an evaluation result of the thin film sample, and outputs the updated machining conditions to the machining device;
- wherein the host control device calculates, from the transmission electron microscope image, an amount of damage of the thin film sample due to machining as the evaluation result;
- wherein, when the amount of damage of the thin film sample is equal to or greater than a threshold for determining amount of damage, the host control device updates the machining conditions;
- wherein the host control device updates the machining conditions to lower an acceleration voltage.
Dependencies are inferred from the claim text.