Curing substrate pretreatment compositions in nanoimprint lithography
First Claim
1. A nanoimprint lithography method comprising:
- disposing a pretreatment composition on a nanoimprint lithography substrate to form a pretreatment coating on the nanoimprint lithography substrate, wherein the pretreatment composition comprises a polymerizable component;
disposing discrete portions of imprint resist on the pretreatment coating, each discrete portion of the imprint resist covering a target area of the nanoimprint lithography substrate, wherein the imprint resist is a polymerizable composition and comprises a polymerization initiator;
forming a composite polymerizable coating on the nanoimprint lithography substrate as each discrete portion of the imprint resist spreads beyond its target area, wherein the composite polymerizable coating comprises a mixture of the pretreatment composition and the imprint resist;
contacting the composite polymerizable coating with a nanoimprint lithography template;
activating the polymerization initiator;
polymerizing the composite polymerizable coating to yield a composite polymeric layer and an uncured portion of the pretreatment coating on the nanoimprint lithography substrate; and
after polymerizing the composite polymerizable coating to yield the composite polymeric layer, polymerizing the uncured portion of the pretreatment coating,wherein the polymerization initiator comprises a first photoinitiator, and polymerizing the composite polymerizable coating comprises initiating polymerization of the composite polymerizable coating by irradiating the composite polymerizable coating with UV radiation of a first wavelength, intensity, energy density, and duration.
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Abstract
A nanoimprint lithography method includes disposing a pretreatment composition on a nanoimprint lithography substrate to form a pretreatment coating, and disposing discrete portions of imprint resist on the pretreatment coating, each discrete portion of the imprint resist covering a target area of the nanoimprint lithography substrate. The imprint resist is a polymerizable composition and includes a polymerization initiator. A composite polymerizable coating is formed on the nanoimprint lithography substrate as each discrete portion of the imprint resist spreads beyond its target area. The composite polymerizable coating is contacted with a nanoimprint lithography template. The polymerization initiator is activated, and the composite polymerizable coating is polymerized to yield a composite polymeric layer and an uncured portion of the pretreatment coating on the nanoimprint lithography substrate. After polymerizing the composite polymerizable coating to yield the composite polymeric layer, the uncured portion of the pretreatment coating is polymerized.
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Citations
13 Claims
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1. A nanoimprint lithography method comprising:
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disposing a pretreatment composition on a nanoimprint lithography substrate to form a pretreatment coating on the nanoimprint lithography substrate, wherein the pretreatment composition comprises a polymerizable component; disposing discrete portions of imprint resist on the pretreatment coating, each discrete portion of the imprint resist covering a target area of the nanoimprint lithography substrate, wherein the imprint resist is a polymerizable composition and comprises a polymerization initiator; forming a composite polymerizable coating on the nanoimprint lithography substrate as each discrete portion of the imprint resist spreads beyond its target area, wherein the composite polymerizable coating comprises a mixture of the pretreatment composition and the imprint resist; contacting the composite polymerizable coating with a nanoimprint lithography template; activating the polymerization initiator; polymerizing the composite polymerizable coating to yield a composite polymeric layer and an uncured portion of the pretreatment coating on the nanoimprint lithography substrate; and after polymerizing the composite polymerizable coating to yield the composite polymeric layer, polymerizing the uncured portion of the pretreatment coating, wherein the polymerization initiator comprises a first photoinitiator, and polymerizing the composite polymerizable coating comprises initiating polymerization of the composite polymerizable coating by irradiating the composite polymerizable coating with UV radiation of a first wavelength, intensity, energy density, and duration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification