Abstract:
According to an embodiment, a support module is provided for supporting a substrate. The support module may include a chuck and a vertical stage. The chuck may include multiple chuck segments that are independently movable. When the substrate is positioned on the chuck, different chuck segments are positioned under different areas of the substrate. The vertical stage may include multiple piezoelectric motors. Each piezoelectric motor may be configured to perform nanometric scale elevation and lowering movements. The multiple piezoelectric motors may be configured to independently move the multiple chuck segments.
Abstract:
According to an embodiment, a support module is provided for supporting a substrate. The support module may include a chuck and a vertical stage. The chuck may include multiple chuck segments that are independently movable. When the substrate is positioned on the chuck, different chuck segments are positioned under different areas of the substrate. The vertical stage may include multiple piezoelectric motors. Each piezoelectric motor may be configured to perform nanometric scale elevation and lowering movements. The multiple piezoelectric motors may be configured to independently move the multiple chuck segments.
Abstract:
A system that may include a movable support module for supporting an object and a controller, wherein the controller is configured to: receive an estimated location of a movable support module that supports an object and temperature information about an actual or estimated temperature of at least a portion of the object support module; and calculate movable support module location information, in response to (a) the estimated location of the movable support module, (b) the temperature information, and (c) a mapping between (i) values of the temperature information, (ii) estimated locations of the movable support module, and (iii) location errors of the movable support module.
Abstract:
A system that may include a chamber, a motorized system, a chuck, a controller, multiple temperature sensors and a cooling module; wherein the chuck is configured to support an object that is positioned within the chamber; wherein the motorized system is configured to move the chuck in relation to the chamber; wherein the multiple temperature sensors are configured to sense multiple temperatures of at least one point within the chamber; wherein the cooling module is configured to cool a unit of the motorized system; and wherein the controller is configured to control the cooling module in response to the multiple temperatures.
Abstract:
A system for reviewing a wafer, the system may include a memory unit that is configured to store information about locations of a set of suspected defects that are located at multiple dice of the wafer; electron optics that is configured to obtain images of reference elements, wherein the reference elements are located within a first reference die of the wafer; and a processor that is configured to: compare the first sub-set of suspected defects to a first sub-set of reference elements to provide a first evaluation result; and select, in response to the first evaluation result, a source of a second sub-set of reference elements. The electron optics is further configured to obtain images of a second sub-set of reference elements that are located within a second reference die of the wafer when it is determined that the second reference die is the source of the second sub-set of reference elements. The processor is further configured to compare the second sub-set of suspected defects to the second sub-set of reference elements to provide a second evaluation result.
Abstract:
A system that may include a chamber, a motorized system, a chuck, a controller, multiple temperature sensors and a cooling module; wherein the chuck is configured to support an object that is positioned within the chamber; wherein the motorized system is configured to move the chuck in relation to the chamber; wherein the multiple temperature sensors are configured to sense multiple temperatures of at least one point within the chamber; wherein the cooling module is configured to cool a unit of the motorized system; and wherein the controller is configured to control the cooling module in response to the multiple temperatures.
Abstract:
A system for scanning an object, the system may include (a) charged particles optics that is configured to: scan, with a charged particle beam and at a first scan rate, a first region of interest (ROI) of an area of the object; detect first particles that were generated as a result of the scanning of the first ROI; scan, with the charged particle beam and at a second scan rate, a second ROI of the area of the object; wherein the second scan rate is lower than the first scan rate; wherein first ROI differs from the second ROI by at least one parameter; detect second particles that were generated as a result of the scanning of the second ROA; and (b) a processor that is configured to generate at least one image of the area in response to the first and second particles.
Abstract:
A system for scanning an object, the system may include (a) charged particles optics that is configured to: scan, with a charged particle beam and at a first scan rate, a first region of interest (ROI) of an area of the object; detect first particles that were generated as a result of the scanning of the first ROI; scan, with the charged particle beam and at a second scan rate, a second ROI of the area of the object; wherein the second scan rate is lower than the first scan rate; wherein first ROI differs from the second ROI by at least one parameter; detect second particles that were generated as a result of the scanning of the second ROA; and (b) a processor that is configured to generate at least one image of the area in response to the first and second particles.
Abstract:
Disclosed herein are a system and method for imaging low electron yield regions with a charged beam imager. In certain embodiments, a system may include a processor, wherein the processor comprise an image waveform finder, a synthetic image generator and an output image generator; wherein the processor is configured to (i) receive or generate multiple images of a region of the object; wherein the region has an electron yield that is below an electron yield threshold; (ii) process the multiple images to generate multiple synthetic images, and (iii) generate an output image of the region in response to the multiple synthetic images.
Abstract:
A system for reviewing a wafer, the system may include a memory unit that is configured to store information about locations of a set of suspected defects that are located at multiple dice of the wafer; electron optics that is configured to obtain images of reference elements, wherein the reference elements are located within a first reference die of the wafer; and a processor that is configured to: compare the first sub-set of suspected defects to a first sub-set of reference elements to provide a first evaluation result; and select, in response to the first evaluation result, a source of a second sub-set of reference elements. The electron optics is further configured to obtain images of a second sub-set of reference elements that are located within a second reference die of the wafer when it is determined that the second reference die is the source of the second sub-set of reference elements. The processor is further configured to compare the second sub-set of suspected defects to the second sub-set of reference elements to provide a second evaluation result.