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US 8,795,778 B2Granted
Photo-patterning using a translucent cylindrical master to form microscopic conductive lines on a flexible substrate
AssigneeUnipixel Displays, Inc.
InventorsRobert J. Petcavich, Ed S. Ramakrishnan, Daniel K. Van Ostrand
Life of this patent
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Abstract
A method includes forming a master embossing roller to have a predetermined pattern, coating a flexible unpatterned substrate with a catalyst coating layer and forming a corresponding pattern in the coated substrate using the master embossing roller to thereby form a patterned substrate. The method may also include electrolessly plating the patterned substrate.
Claims13
A method, comprising:
- forming a master embossing roller comprising a predetermined pattern, wherein forming the master embossing roller comprises coating at least a portion of the roller with aluminum between an outer resist coating and a cylindrical substrate and photoetching portions of the aluminum not covered by the outer resist coating;
- coating a flexible unpatterned substrate with a catalyst coating layer;
- forming a corresponding pattern in the coated substrate using the master embossing roller to thereby form a patterned substrate;
- and
- electrolessly plating the patterned substrate.
2 more elements
A method, comprising:
- forming a master embossing roller comprising a predetermined pattern, wherein forming the master embossing roller comprises coating at least a portion of the roller with aluminum between an outer resist coating and a cylindrical substrate, photoetching portions of the aluminum not covered by the outer resist coating, and wherein forming the master embossing roller comprises removing the outer resist coating thereby leaving those portions of the aluminum not photoetched away;
- laser etching a plurality of grooves in the coating to form a master embossing roller having a predetermined pattern of grooves and raised lines;
- coating a cylindrical structure with an ultraviolet light-opaque coating;
- coating a flexible unpatterned substrate with a catalyst coating layer;
- embossing the predetermined pattern in the flexible unpatterned substrate by rotating the master embossing roller against the catalyst coating layer;
- and
- electrolessly plating the patterned substrate.
4 more elements
Dependencies are inferred from the claim text.