H01J2237/0437

Fill pattern to enhance ebeam process margin

Lithographic apparatuses suitable for complementary e-beam lithography (CEBL) are described. In an example, a method of forming a pattern for a semiconductor structure includes forming a pattern of parallel lines above a substrate. The method also includes aligning the substrate in an e-beam tool to provide the pattern of parallel lines parallel with a scan direction of the e-beam tool. The e-beam tool includes a column having a blanker aperture array (BAA) with a staggered pair of columns of openings along an array direction orthogonal to the scan direction. The method also includes forming a pattern of cuts or vias in or above the pattern of parallel lines to provide line breaks for the pattern of parallel lines by scanning the substrate along the scan direction. A cumulative current through the column has a non-zero and substantially uniform cumulative current value throughout the scanning.

Plasma block with integrated cooling

Exemplary semiconductor processing systems may include a remote plasma source. The remote plasma source may include a first plasma block segment defining an inlet to an internal channel of the first plasma block segment. The first plasma block segment may also define a cooling channel between the internal channel of the first plasma block segment and a first exterior surface of the first plasma block segment. The remote plasma source may include a second plasma block segment defining an outlet from an internal channel of the second plasma block segment. The second plasma block segment may also define a cooling channel between the internal channel of the second plasma block segment and a first exterior surface of the second plasma block segment. The systems may include a semiconductor processing chamber defining an inlet fluidly coupled with the outlet from the remote plasma source.

BLANKING APERTURE ARRAY UNIT
20220392731 · 2022-12-08 · ·

A blanking aperture array unit according to the present embodiment includes a chip configured to control a charged particle beam by blanking control of switching whether to irradiate a target with the charged particle beam; a substrate having the chip mounted thereon; a wire configured to electrically connect pads on the chip to the substrate and transmit a control signal for the blanking control from the substrate to the chip through the pads; and a conductive covering member having a first end connected to the substrate and a second end located on the chip, the covering member being provided from the first end to the second end to cover the wire while maintaining electrical insulation from the wire, and at least two end sides of the second end of the covering member are nearer a central portion of the chip than locations of the pads on the chip.

SEMICONDUCTOR PROCESS SURFACE MONITORING
20220380896 · 2022-12-01 ·

An exemplary apparatus includes a chamber that includes a first window and a second window; a substrate holder configured to hold a substrate in the processing chamber; an infrared light (IR) source configured to generate a collimated IR beam; a first optical assembly configured to transmit the collimated IR beam into the chamber through the first window and direct the collimated IR beam at an incident angle of Brewster's angle with a front side of the substrate; and a second optical assembly configured to receive the collimated IR beam reflected at a back side of the substrate through the second window and direct the collimated IR beam to an optical sensor system.

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.

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.

MULTI CHARGED PARTICLE BEAM EXPOSURE METHOD, AND MULTI CHARGED PARTICLE BEAM EXPOSURE APPARATUS
20170352520 · 2017-12-07 · ·

A multi charged particle beams exposure method includes assigning, with respect to plural times of shots of multi-beams using a charged particle beam, each shot to one of plural groups, depending on a total current value of beams becoming in an ON condition in a shot concerned in the multi-beams, changing the order of the plural times of shots so that shots assigned to the same group may be continuously emitted for each of the plural groups, correcting, for each group, a focus position of the multi-beams to a focus correction position for a group concerned corresponding to the total current value, and performing the plural times of shots of the multi-beams such that the shots assigned to the same group are continuously emitted in a state where the focus position of the multi-beams has been corrected to the focus correction position for the group concerned.

MULTI-CHARGED PARTICLE BEAM WRITING APPARATUS, AND MULTI-CHARGED PARTICLE BEAM WRITING METHOD
20230187172 · 2023-06-15 · ·

A multi-charged particle beam writing apparatus includes a beam forming mechanism to form multi-charged-particle-beams, a block region forming circuit to form plural block regions from an irradiation region of the multi-charged-particle-beams formed by combining plural sub-regions each surrounded by a beam, being different from each other, and plural other beams adjacent to the beam in the multi-charged-particle-beams, and a writing mechanism to perform, using the multi-charged-particle-beams, multiple writing such that irradiation of each block region of the plural block regions is at least performed by any one of writing processing of the multiple writing, and such that each writing processing of the multiple writing is performed to write a writing region of a target object in a manner of covering the writing region without overlapping by, using one of the plural block regions, irradiation of the one of the plural block regions.

STAGE MECHANISM
20170316914 · 2017-11-02 · ·

According to one aspect of the present invention, a stage mechanism includes a movable stage disposed in a vacuum atmosphere and mounting a heat source, a first heat pipe connected to the heat source, a movable mechanism configured to move according to the movement of the first heat pipe caused by the movement of the stage, by using a portion of the first heat pipe, and a cooling mechanism configured to cool the first heat pipe through the movable mechanism.

MULTI CHARGED PARTICLE BEAM IRRADIATION APPARATUS, MULTI CHARGED PARTICLE BEAM IRRADIATION METHOD, AND MULTI CHARGED PARTICLE BEAM ADJUSTMENT METHOD

A multi charged particle beam irradiation apparatus includes a shaping aperture array substrate, where plural openings are formed as an aperture array, to shape multi-beams by making a region including entire plural openings irradiated by a charged particle beam, and making portions of a charged particle beam individually pass through a corresponding one of the plural openings; and a plurality of stages of lenses, arranged such that a reduction ratio of multi-beams by at least one lens of a stage before the last stage lens is larger than that of the multi-beams by the last stage lens, to correct distortion of a formed image obtained by forming an image of the aperture array by the multi-beams, and to form the image of the aperture array by the multi-beams at a height position between the last stage lens and a last-but-one stage lens, and at the surface of a target object.