摘要:
With a multi-beam type charged particle beam apparatus, and a projection charged particle beam apparatus, in the case of off-axial aberration corrector, there is the need for preparing a multitude of multipoles, and power supply sources in numbers corresponding to the number of the multipoles need be prepared. In order to solve this problem as described, a charged particle beam apparatus is provided with at least one aberration corrector wherein the number of the multipoles required in the past is decreased by about a half by disposing an electrostatic mirror in an electron optical system.
摘要:
An object of the present invention is to measure a landing angle even in a multi electron beam lithography system in which current amount of each beam is small. Another object thereof is to measure an absolute value of the landing angle and a relative landing angle with the high SN ratio. In a transmission detector including two diaphragm plates (first and second diaphragms) and a detector, a detection angle determined by a distance between the first and second diaphragms and an aperture diameter of the second diaphragm is made equal to or smaller than the divergence angle of the electron beam to be measured, and the landing angle is determined based on the relation between a center of the fine hole of the first diaphragm and the center of the aperture of the second diaphragm at which the amount of detected current is maximum.
摘要:
This invention provides a charged particle beam apparatus that can makes reduction in off axis aberration and separate detection of secondary beams to be compatible. The charged particle beam apparatus has: an electron optics that forms a plurality of primary charged particle beams, projects them on a specimen, and makes them scan the specimen with a first deflector; a plurality of detectors that individually detect a plurality of secondary charged particle beams produced from the plurality of locations of the specimen by irradiation of the plurality of primary charged particle beams; and a voltage source for applying a voltage to the specimen. The charged particle beam apparatus further has: a Wien filter for separating paths of the primary charged particle beams and paths of the secondary charged particle beams; a second deflector for deflecting the secondary charged particle beams separated by the Wien filter; and control means for controlling the first deflector and the second deflector in synchronization, wherein the plurality of detectors detect the plurality of secondary charged particle beams separated by the Wien filter individually.
摘要:
A case includes a case body, a lid, hinges supporting the lid on the case body and a waterproof seal placed on the joining surface of the case body. The lid can be turned for closing on the hinges so as to compress the waterproof seal perpendicularly to the joining surface of the case body. Each hinge is provided with a hinge pin having opposite cylindrical end parts and an offset middle part defining a groove together with the cylindrical end parts. The grooves of the hinges permit first knuckles formed integrally with the lid to sink therein so that the lid held with its joining surface parallel to the joining surface of the case body can be moved toward the case body perpendicularly to the joining surface of the case body to compress the waterproof seal perpendicularly between the joining surfaces of the lid and the case body. The hinge pin is restrained from coming off by the first knuckles when the first knuckles are engaged in the groove.
摘要:
A multilayered wiring board having a printed inductor which is formed on a grounding layer or electric power supply layer through a dielectric layer inserted between them, wherein a removed portion is formed only in the grounding layer or electric power supply layer which is positioned right under the printed inductor and in the neighboring area and no removed portion is formed in the dielectric layer. According to this structure, without increasing the manufacture cost, the distance between the printed inductor and the grounding layer or electric power supply layer opposite to it spreads to the lower electric power supply layer or grounding layer and the stray capacity existing therebetween is reduced, and a reduction of the self-resonance frequency of the printed inductor is prevented, and the frequency characteristics improve.
摘要:
With a multi-beam type charged particle beam apparatus, and a projection charged particle beam apparatus, in the case of off-axial aberration corrector, there is the need for preparing a multitude of multipoles, and power supply sources in numbers corresponding to the number of the multipoles need be prepared. In order to solve this problem as described, a charged particle beam apparatus is provided with at least one aberration corrector wherein the number of the multipoles required in the past is decreased by about a half by disposing an electrostatic mirror in an electron optical system.
摘要:
In a charged-particle-beam exposure apparatus for exposing a wafer using a charged-particle beam, an electron beam emitted from an electron source serving as a source of charged particles is substantially collimated by a collimator lens and irradiates an aperture array (3), which has apertures for forming a plurality of electron beams used to expose a wafer. A current detector array has current detectors for measuring the intensities (currents) of electron beams at portions of the-aperture array other than where the apertures are present. During the wafer exposure operation, each current detector of the current detector array measures the intensity of the electron beam. The electron-beam intensity distribution is evaluated based upon the results of measurement and, when necessary, the optical power of electrostatic lenses that construct the collimator lens (2) is adjusted to uniformalize the electron-beam intensity distribution.
摘要:
A case includes a case body, a lid, hinges supporting the lid on the case body and a waterproof seal placed on the joining surface of the case body. The lid can be turned for closing on the hinges so as to compress the waterproof seal perpendicularly to the joining surface of the case body. Each hinge is provided with a hinge pin having opposite cylindrical end parts and an offset middle part defining a groove together with the cylindrical end parts. The grooves of the hinges permit first knuckles formed integrally with the lid to sink therein so that the lid held with its joining surface parallel to the joining surface of the case body can be moved toward the case body perpendicularly to the joining surface of the case body to compress the waterproof seal perpendicularly between the joining surfaces of the lid and the case body. The hinge pin is restrained from coming off by the first knuckles when the first knuckles are engaged in the groove.
摘要:
Disclosed is equipment for charged-particle beam lithography capable of executing exposure even when an electron beam with a bad property is produced due to a failure in some multibeam forming element, without replacing the failing multibeam forming element and without reducing the exposure accuracy. The equipment includes means for forming a plurality of charged-particle beams arranged at predetermined intervals; a plurality of blankers which act on the plurality of charged-particle beams individually; a common blanker which acts on all of the plurality of charged-particle beams; and a blanking restriction for causing those charged-particle beams which are given predetermined deflection by the plurality of blankers to reach onto a sample, with a signal applied to the common blanker, and blocking those charged-particle beams which are not given the predetermined deflection by the plurality of blankers to the sample. The equipment blocks beams with bad properties to the sample and executes exposure using only those beams which have bad properties.
摘要:
There is provided an electron beam exposure technique which permits optical adjustment in an electron optics system using a doublet lens necessary for large field projection.Electron beam exposure equipment having a part forming one image by at least two electromagnetic lenses, has means measuring the position of an electron beam near an image plane with changing excitation of at least two lenses at the same time; and control means feeding back the measured result to aligners or the intensity of the lenses.