Method and apparatus for depositing films
First Claim
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1. An apparatus for depositing film on a substrate, the apparatus comprising:
- a deposition chamber adapted to hold target particles and other particles;
an ionizer adapted to create an ionization zone to selectively ionize the target particles passing through the ionization zone while leaving the other particles passing through the ionization zone substantially unaffected; and
an electrostatic collimator adapted to electrically steer the ionized target particles through the electrostatic collimator and toward the substrate.
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Abstract
In a sputtering apparatus, target particles to be deposited onto a substrate are selectively ionized relative to other particles in the deposition chamber. For example, titanium or titanium-containing target particles are selectively ionized, while inert particles, such as argon atoms, remain substantially unaffected. Advantageously, one or more optical ionizers, such as lasers, are used to create one or more ionization zones within the deposition chamber in which such selective ionization takes place.
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Citations
40 Claims
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1. An apparatus for depositing film on a substrate, the apparatus comprising:
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a deposition chamber adapted to hold target particles and other particles; an ionizer adapted to create an ionization zone to selectively ionize the target particles passing through the ionization zone while leaving the other particles passing through the ionization zone substantially unaffected; and an electrostatic collimator adapted to electrically steer the ionized target particles through the electrostatic collimator and toward the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for depositing a film on a substrate, the apparatus comprising:
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a deposition chamber adapted to contain inert particles, target particles, and a substrate, wherein the target particles comprise titanium-containing particles; a plurality of ionizers creating a plurality of ionization zones within the deposition chamber, each of the plurality of ionizers ionizing the target particles as they pass through each of the respective ionization zones while leaving the inert particles substantially unaffected; and a field generator creating a field within the deposition chamber to accelerate the ionized target particles generally along a given trajectory to the substrate. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method of manufacturing an integrate circuit, comprising the acts of:
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passing target particles and inert particles through at least one ionization zone in a deposition chamber to ionize the target particles while leaving the inert particles substantially unaffected; and steering the ionized target particles into a collimated stream directed along a given path toward the substrate using an electrostatic collimator. - View Dependent Claims (36, 37, 38, 39, 40)
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Specification