Method of producing optical element by patterning liquid crystal films
AssigneeDai Nippon Printing Co., Ltd.
InventorMasanori Umeya
Life of this patent
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Abstract
A method for making an optical element from patterned liquid crystal films by placing a radiation-curing liquid crystal on an aligning function substrate surface, radiating selectively a portion of the liquid crystal film partially to cure it, contacting the partially cured film with an organic solvent to remove the uncured portion of the film and form a pattern in the film, and applying another radiation-curing liquid crystal to a surface of the first film exposed by removing the uncured portion, thereby forming and patterning the second liquid crystal film. The solvent does not dissolve the substrate surface.
Claims5
A method of producing an optical element by patterning a plurality of liquid crystal films, comprising:
- applying a first radiation-curing liquid crystal to a surface of a substrate having an aligning function to form a first liquid crystal film on the substrate in an uncured state;
- selectively applying radiation to the uncured first liquid crystal film to form at least one cured region and at least one uncured region of the first liquid crystal film;
- contacting the at least one uncured region with an organic solvent to remove the at least one uncured region of the first liquid crystal film while retaining the at least one cured region;
- and
- applying a second radiation-curing liquid crystal to an exposed surface of the substrate exposed by removal of the at least one uncured region to form a second liquid crystal film on the exposed surface;
- wherein the organic solvent is a solvent that does not dissolve the exposed surface so that the exposed surface retains the aligning function after exposure to the organic solvent.
Dependencies are inferred from the claim text.