Method for the manufacture of multi-color microlithographic displays
AssigneeRCA Corporation
InventorThomas R. Pampalone
Life of this patent
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Abstract
A method for the manufacture of multi-colored microlithographic displays especially fluorescent screens for cathode ray tubes is provided in which a film of a positive phototackifiable polyacetylene sulfone polymer is applied to the substrate of the display. The film is then exposed in predetermined areas with a sufficient amount of radiation to tackify the exposed areas. The exposed areas are then contacted with a pigment or phosphor which is desired to be applied to the exposed area and it selectively adheres to the exposed areas. The exposure and dusting are repeated for each application of different color pigments, toners or phosphors.
Claims11
In a method for the manufacture of a multi-color image on a substrate, the improvement which consists essentially of:
- (a) coating the surface of the substrate with a film of a positive phototackifiable polyacetylene sulfone polymer having a repeating unit of the formula ##STR2## wherein R is a member selected from the group consisting of hydrogen and an organic radical;
- (b) exposing a predetermined first area of the film with radiation in an amount sufficient to tackify the exposed first area;
- (c) applying to the surface of the film a first color material whereby the first material selectively adheres to the first area;
- (d) exposing a predetermined second area of the film with radiation in an amount sufficient to tackify the exposed second area;
- (e) applying to the surface of the film a second color material whereby the second phosphor selectively adheres to the second area.
Dependencies are inferred from the claim text.