摘要:
The invention relates to a method of manufacturing an electrostatic clamp configured to electrostatically clamp an article to an article support in a lithographic apparatus. The method includes providing a first layer of material, etching a recess in the first layer of material, and disposing an electrode in the recess of the first layer of material.
摘要:
The invention relates to a method of manufacturing an electrostatic clamp configured to electrostatically clamp an article to an article support in a lithographic apparatus. The method includes providing a first layer of material, etching a recess in the first layer of material, and disposing an electrode in the recess of the first layer of material.
摘要:
A lithographic apparatus is disclosed. The lithographic apparatus includes an illumination system for providing a beam of radiation on a flat article to be placed in a beam path of the beam of radiation, and an article handler for handling the article during placement or removal of the article. The article handler includes an electrode and a dielectric layer in order to form an electrostatic clamp for electrostatically clamping the article.
摘要:
A lithographic apparatus is disclosed. The apparatus includes an illumination system arranged to provide a radiation beam, an article support configured to support an article to be placed in a beam path of the radiation beam, a multipolar clamp configured to provide a clamping pressure for clamping the article against the article support, and a bias voltage circuit for biasing at least one electrode of the multipolar clamp, such that the occurrence of ridges that appear due to static charges on the article may be circumvented.
摘要:
A lithographic apparatus is disclosed. The apparatus includes an illumination system arranged to provide a radiation beam, an article support configured to support an article to be placed in a beam path of the radiation beam, a multipolar clamp configured to provide a clamping pressure for clamping the article against the article support, and a bias voltage circuit for biasing at least one electrode of the multipolar clamp, such that the occurrence of ridges that appear due to static charges on the article may be circumvented.
摘要:
An electrostatic clamp assembly for a lithographic apparatus is provided. The clamp assembly includes an electrostatic clamp structured to clamp an article against an article support structure during projection of a beam of radiation, and a controller structured to control at least one of the clamp and a backfill gas pressure to release the article from the article support structure by use of the backfill gas pressure.
摘要:
A lithographic apparatus includes an illumination system for providing a beam of radiation, an article support for supporting a flat article to be placed in a beam path of the beam of radiation on the article support, an electrostatic clamp for clamping the article against the article support by an electrostatic field during projection, and a recessed backfill gas feed arranged in the article support for feeding backfill gas to a backside of the article when supported by the article support. According to one aspect of the invention, the recessed backfill gas feed includes a shielding layer for shielding the backfill gas in the recessed backfill gas feed from the electrostatic field.
摘要:
A lithographic projection apparatus is disclosed. The apparatus includes an illuminator for conditioning a beam of radiation, and an article holder. The article holder includes a plurality of protrusions arranged to provide a substantially flat plane of support for supporting an article to be placed in a beam path of the beam of radiation. The protrusions are generally spaced apart equidistantly at a first distance. The article holder also includes a pair of electrodes for clamping the article to the holder. The electrodes are disposed in substantially the same plane above or below the protrusions, and are spaced apart from one another by a gap. Neighboring protrusions within the plurality of protrusions that are located on opposite sides of the gap are spaced apart by a second distance that is greater than the first distance.
摘要:
A lithographic apparatus includes an illumination system for providing a beam of radiation, an article support for supporting a flat article to be placed in a beam path of the beam of radiation on the article support, a backfill gas feed arranged in the article support for feeding backfill gas to a backside of the article when supported by the article support, and a clamp for clamping the article against the article support during projection. According to one aspect of the invention, the apparatus includes a controller for controlling the clamp and/or the backfill gas feed pressure so as to release the clamp prior to reducing the backfill gas feed pressure.
摘要:
A lithographic apparatus is disclosed that includes a substrate table configured to support a substrate on a substrate supporting area and a heater and/or temperature sensor on a surface adjacent the substrate supporting area.