H01J2237/151

Beam Pattern Device Having Beam Absorber Structure

A multi-beam pattern definition device for use in a particle-beam processing or inspection apparatus, which is irradiated with a beam of electrically charged particles and allows passage of the beam through a plurality of apertures to form corresponding beamlets, comprises an aperture array device in which said apertures are realized according to several sets of apertures arranged in respective aperture arrangements, and an absorber array device having a plurality of openings configured for the passage of at least a subset of beamlets that are formed by the apertures. The absorber array device comprises a plurality of openings corresponding to one of the aperture arrangements of the aperture array device, whereas it includes a charged-particle absorbing structure comprising absorbing regions surrounded by elevated regions and configured to absorb charged particles impinging thereupon at locations corresponding to apertures of the other aperture arrangements of the aperture array device, effectively confining the effects of irradiated particles and electric charge therein.

APPARATUS FOR AND METHOD OF CONTROL OF A CHARGED PARTICLE BEAM

An apparatus comprising a set of pixels configured to shape a beamlet approaching the set of pixels and a set of pixel control members respectively associated with each of the set of pixels, each pixel control member being arranged and configured to apply a signal to the associated pixel for shaping the beamlet.

CHARGED PARTICLE ASSESSMENT TOOL, INSPECTION METHOD
20230054632 · 2023-02-23 · ·

A charged particle assessment tool including: an objective lens configured to project a plurality of charged particle beams onto a sample, the objective lens having a sample-facing surface defining a plurality of beam apertures through which respective ones of the charged particle beams are emitted toward the sample; and a plurality of capture electrodes, each capture electrode adjacent a respective one of the beam apertures, configured to capture charged particles emitted from the sample.

MULTI CHARGED PARTICLE BEAM WRITING METHOD AND MULTI CHARGED PARTICLE BEAM WRITING APPARATUS
20230055778 · 2023-02-23 · ·

In one embodiment, a multi charged particle beam writing method includes forming a multi charged particle beam with which a substrate serving as a writing target is irradiated, deflecting the multi charged particle beam to a position with a predetermined deflection offset added so that deflection voltages respectively applied to a plurality of electrodes of an electrostatic positioning deflector does not include a state where all the deflection voltages are zero, and irradiating the substrate with the multi charged particle beam. A positive common voltage is added to the deflection voltages which are applied to the respective electrodes of the electrostatic positioning deflector.

PARTICLE BEAM DEVICE HAVING A DEFLECTION UNIT

The invention relates to a particle beam device (100) for imaging, analyzing and/or processing an object (114). The particle beam device (100) comprises a first particle beam generator (300) for generating a first particle beam, wherein the first particle beam generator (300) has a first generator beam axis (301), wherein an optical axis (OA) of the particle beam device (100) and the first generator beam axis (301) are identical; a second particle beam generator (400) for generating a second particle beam, wherein the second particle beam generator (400) has a second generator beam axis (401), wherein the optical axis (OA) and the second generator beam axis (401) are arranged at an angle being different from 0° and 180°; a deflection unit (500) for deflecting the second particle beam from the second generator beam axis (401) to the optical axis (OA) and along the optical axis (OA), wherein the deflection unit (500) has a first opening (501) and a second opening (502) being different from the first opening (501), wherein the optical axis (OA) runs through the first opening (501), wherein the second generator beam axis (401) runs through the second opening (502); an objective lens (107) for focusing the first particle beam or the second particle beam onto the object (114), wherein the optical axis (OA) runs through the objective lens (107); and at least one detector (116, 121, 122) for detecting interaction particles and/or interaction radiation.

CHARGED PARTICLE BEAM DEVICE
20220359150 · 2022-11-10 ·

The invention provides a charged particle beam device capable of reducing a positional shift between secondary beams generated in a beam separator. The charged particle beam device includes a charged particle beam source configured to irradiate a sample with a plurality of primary beams, a plurality of detectors configured to detect secondary beams emitted from the sample in correspondence to the primary beams, and a beam separator configured to deflect the secondary beams in a direction different from that of the primary beams. The charged particle beam device further includes a deflector provided between the beam separator and the detector to correct a positional shift between the secondary beams generated in the beam separator.

CHARGED PARTICLE ASSESSMENT TOOL, INSPECTION METHOD
20230125800 · 2023-04-27 · ·

A charged-particle tool including: a condenser lens array configured to separate a beam of charged particles into a first plurality of sub-beams along a respective beam path and to focus each of the sub-beams to a respective intermediate focus; an array of objective lenses, each objective lens configured to project one of the plurality of sub-beams onto a sample; a corrector including an array of elongate electrodes, the elongate electrodes extending substantially perpendicular to the beam paths of the first plurality of sub-beams and arranged such that a second plurality of the sub-beams propagate between a pair of the elongate electrodes, the second plurality of sub-beams being a subset of the first plurality of sub-beams; and an electric power supply configured to apply a potential difference between the pair of elongate electrodes so as to deflect the second plurality of sub-beams by a desired amount.

BEAM MANIPULATOR IN CHARGED PARTICLE-BEAM EXPOSURE APPARATUS

An improved electron beam manipulator for manipulating an electron beam in an electron projection system and a method for manufacturing thereof are disclosed. The electron beam manipulator comprises a body having a first surface and a second surface opposing to the first surface and an interconnecting surface extending between the first surface and the second surface and forming an aperture through the body. The body comprises an electrode forming at least part of the interconnecting surface between the first surface and the second surface.

CHARGED PARTICLE BEAM WRITING APPARATUS
20220328278 · 2022-10-13 · ·

In one embodiment, a charged particle beam writing apparatus includes a positioning deflector adjusting an irradiation position of a charged particle beam radiated to a substrate which is a writing target, a fixed deflector which is disposed downstream of the positioning deflector in a traveling direction of the charged particle beam, and in which an amount of deflection is fixed, a focus correction lens performing focus correction on the charged particle beam according to a surface height of the substrate, and an object lens focusing the charged particle beam.

Charged Particle Beam System and Control Method Therefor
20230115486 · 2023-04-13 ·

Provided is a charged particle beam system capable of preventing the data acquisition time from increasing. A control method for the system is also provided. The charged particle beam system includes: a beam blanker for blanking a charged particle beam; a sample stage on which a sample is tiltably held and thus can assume a tilt angle; a blanking controller for controlling the blanking of the charged particle beam and causing a pulsed beam having a duty ratio to be directed at the sample; and a tilt controller for controlling the tilt angle of the sample. The blanking controller sets the duty ratio of the pulsed beam based on the tilt angle of the sample.