MULTICOLOR ELECTROPHORETIC INK, ASSOCIATED DISPLAY DEVICE, AND PRODUCTION METHOD

• Main Authors: BROCHON CYRIL, HADZIIOANNOU GEORGES, CHARBONNIER ANTOINE
• Format: Patent
• Language: Chinese; English
• Published: 12.11.2014
• Subjects: ADHESIVES; ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; 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; DISPLAYING; DYES; EDUCATION; FILLING PASTES; FREQUENCY-CHANGING; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LABELS OR NAME-PLATES; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICS; POLISHES; PRINTING; SEALS; SELECTIVE PRINTING MECHANISMS; SIGNS; STAMPS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention relates to a multicolor electrophoretic ink comprising at least four types of particles that are dispersed in a non-polar organic medium. Each type of particles contains a pigment of a color associated therewith and has a positive or negative electrostatic charge. The invention is characterized in that at least one of said types of particles has a magnetic property (magnetic core) such that each type of particles can migrate in a predefined manner under the combined effect of an electrostatic force and/or a magnetic restoring force.