Processes for the production of electro-optic displays, and color filters for use therein
AssigneeE Ink Corporation
InventorGuy M. Danner
Life of this patent
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Abstract
Processes are provided for depositing multiple color filter materials on a substrate to form color filters. In a first process, the surface characteristic of a substrate is modified by radiation so that a flowable form of a first color filter material will be deposited on a first area, and converted to a non-flowable form. A second color filter material can then be deposited on a second area of the substrate. In a second process, first and second color filter materials are deposited on separate donor sheets and transferred by radiation to separate areas of the substrate. A third process uses flexographic printing to transfer the first and second color filter materials to the substrate.
Claims6
A process for producing a color electrophoretic display including first and second color filter materials on a backplane of the color display, comprising:
- providing an opaque backplane comprising first and second sets of electrodes;
- depositing on the backplane a coating of a material having a surface characteristic capable of being modified by radiation;
- applying radiation to a first area of the coating aligned with the first set of electrodes but not to a second area of the coating, said second area of the coating being aligned with said second set of electrodes;
- depositing a flowable form of a first color filter material on to the first area of the coating;
- converting the flowable form of the first color filter material on the first area of the coating to a non-flowable form;
- applying radiation to the second area of the coating;
- depositing a second color filter material on to the second area of the coating;
- and
- laminating an electrophoretic medium and a front electrode to the backplane, thereby producing a color electrophoretic display.
Dependencies are inferred from the claim text.