Process for the production of electro-optic displays, and color filters for use therein

• Main Author: Danner, Guy M
• Format: Patent
• Language: English
• Published: 07.01.2020
• Subjects: ADVERTISING; APPARATUS SPECIALLY ADAPTED THEREFOR; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CINEMATOGRAPHY; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; EDUCATION; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; FREQUENCY-CHANGING; HOLOGRAPHY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MAGNETOGRAPHY; MATERIALS THEREFOR; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORIGINALS THEREFOR; PERFORMING OPERATIONS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SEALS; SPRAYING OR ATOMISING IN GENERAL; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

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.