Electron microscope for inspecting and processing of an object with miniaturized structures and method thereof
First Claim
1. A method of manufacturing an object having miniaturized structures, the method comprising:
- (a) processing the object by supplying process gas to a surface of the object, and directing an electron beam to a processing location on the surface of the object, for at least one of depositing material on the object and ablating material from the object; and
(b) inspecting the object by scanning the surface the object with the electron beam and supplying backscattered electrons and secondary electrons, generated by the scanning electron beam, to an energy selector, reflecting the secondary electrons at the energy selector, detecting backscattered electrons having traversed the energy selector, and generating an electron microscopic image of the scanned surface based on the detected backscattered electrons; and
(c) performing one of (i) repeating the processing and the inspecting of the object, and (ii) stopping further processing and inspecting of the object, based on an analysis of the generated electron microscopic image of the object.
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Accused Products
Abstract
The disclosure relates to a method for manufacturing an object with miniaturized structures. The method involves processing the object by supplying reaction gas during concurrent directing an electron beam onto a location to be processed, to deposit material or ablate material; and inspecting the object by scanning the surface of the object with an electron beam and leading generated backscattered electrons and secondary electrons to an energy selector, reflecting the secondary electrons from the energy selector, detecting the backscattered electrons passing the energy selector and generating an electron microscopic image of the scanned region in dependence on the detected backscattered electrons; and examining the generated electron microscopic image and deciding whether further depositing or ablating of material should be carried out. The disclosure also relates to an electron microscope and a processing system which are adapted for performing the method.
36 Citations
19 Claims
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1. A method of manufacturing an object having miniaturized structures, the method comprising:
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(a) processing the object by supplying process gas to a surface of the object, and directing an electron beam to a processing location on the surface of the object, for at least one of depositing material on the object and ablating material from the object; and
(b) inspecting the object by scanning the surface the object with the electron beam and supplying backscattered electrons and secondary electrons, generated by the scanning electron beam, to an energy selector, reflecting the secondary electrons at the energy selector, detecting backscattered electrons having traversed the energy selector, and generating an electron microscopic image of the scanned surface based on the detected backscattered electrons; and
(c) performing one of (i) repeating the processing and the inspecting of the object, and (ii) stopping further processing and inspecting of the object, based on an analysis of the generated electron microscopic image of the object. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A processing system for inspecting and processing of an object having miniaturized structures, the electron microscopy system comprising:
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an electron beam source for generating an electron beam;
a focussing lens for focussing the electron beam onto the object;
a secondary electron detector disposed at a distance from the object;
an energy selector disposed at a greater distance from the object than the secondary electron detector;
a backscattered electron detector disposed at a greater distance from the object than the energy selector;
a first vacuum space in which the electron beam source is disposed;
a second vacuum space which is partially separated from the first vacuum space by a first separating structure comprising an aperture traversed by the electron beam;
a third vacuum space in which the backscattered electron detector is disposed, wherein the third vacuum space is partially separated from the second vacuum space by a second separating structure (26) comprising an aperture traversed by the electron beam; and
a fourth vacuum space in which a surface of the secondary electron detector is disposed, wherein the fourth vacuum space is partially separated from the third vacuum space by a third separating structure (27) comprising an aperture traversed by the electron beam. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification