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WO2025023926A1 - Ensembles électro-optiques et matériaux destinés à être utilisés dans ceux-ci - Google Patents

Ensembles électro-optiques et matériaux destinés à être utilisés dans ceux-ci Download PDF

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Publication number
WO2025023926A1
WO2025023926A1 PCT/US2023/028441 US2023028441W WO2025023926A1 WO 2025023926 A1 WO2025023926 A1 WO 2025023926A1 US 2023028441 W US2023028441 W US 2023028441W WO 2025023926 A1 WO2025023926 A1 WO 2025023926A1
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Prior art keywords
electro
optic medium
optic
polymer
display
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English (en)
Inventor
Lynne A. MCCULLOUGH
Jay William Anseth
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E Ink Corp
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E Ink Corp
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Priority to AU2023455753A priority Critical patent/AU2023455753A1/en
Priority to PCT/US2023/028441 priority patent/WO2025023926A1/fr
Publication of WO2025023926A1 publication Critical patent/WO2025023926A1/fr
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/16757—Microcapsules
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F2001/1678—Constructional details characterised by the composition or particle type
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/02—Materials and properties organic material
    • G02F2202/022—Materials and properties organic material polymeric
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/16—Materials and properties conductive

Definitions

  • Electro-Optic Assemblies and Materials for Use Therein BACKGROUND OF THE INVENTION
  • Electro-optic assemblies useful in the production of electro-optic displays, and to materials for use in such assemblies are disclosed. More specifically, binder compositions having controlled volume resistivity, and electro-optic assemblies incorporating such materials, are disclosed.
  • electro-optic as applied to a material or a display, is used herein in its conventional meaning in the imaging art to refer to a material having first and second display states differing in at least one optical property, the material being changed from its first to its second display state by application of an electric field to the material.
  • the optical property is typically color perceptible to the human eye, it may be another optical property, such as optical transmission, reflectance, luminescence or, in the case of displays intended for machine reading, pseudo-color in the sense of a change in reflectance of electromagnetic wavelengths outside the visible range.
  • Some electro-optic materials are solid in the sense that the materials have solid external surfaces, although the materials may, and often do, have internal liquid- or gas-filled spaces. Such displays using solid electro-optic materials may hereinafter for convenience be referred to as "solid electro-optic displays”.
  • solid electro-optic displays includes rotating bichromal member displays, encapsulated electrophoretic displays, microcell electrophoretic displays and encapsulated liquid crystal displays.
  • Electrophoretic displays can have attributes of good brightness and contrast, wide viewing angles, state bistability, and low power consumption when compared with liquid crystal displays. Nevertheless, problems with the long-term image quality of these displays have prevented their widespread usage. For example, particles that make up electrophoretic displays tend to settle, resulting in inadequate service-life for these displays.
  • electrophoretic media require the presence of a fluid.
  • this fluid is a liquid, but electrophoretic media can be produced using gaseous fluids; see, for example, Kitamura, T., et al., "Electrical toner movement for electronic paper-like display", IDW Japan, 2001, Paper HCS1-1, and Yamaguchi, Y., et al., "Toner display using insulative particles charged triboelectrically", IDW Japan, 2001, Paper AMD4- 4). See also U.S. Patents Nos.7,321,459 and 7,236,291.
  • Such gas-based electrophoretic media appear to be susceptible to the same types of problems due to particle settling as liquid-based electrophoretic media, when the media are used in an orientation which permits such settling, for example in a sign where the medium is disposed in a vertical plane.
  • particle settling appears to be a more serious problem in gas-based electrophoretic media than in liquid-based ones, since the lower viscosity of gaseous suspending fluids as compared with liquid ones allows more rapid settling of the electrophoretic particles.
  • Numerous patents and applications assigned to or in the names of the Massachusetts Institute of Technology (MIT), E Ink Corporation, E Ink California, LLC. and related companies describe various technologies used in encapsulated and microcell electrophoretic and other electro-optic media.
  • Encapsulated electrophoretic media comprise numerous small capsules, each of which itself comprises an internal phase containing electrophoretically- mobile particles in a fluid medium, and a capsule wall surrounding the internal phase. Typically, the capsules are themselves held within a polymeric binder to form a coherent layer positioned between two electrodes.
  • the technologies described in these patents and applications include: (a) Electrophoretic particles, fluids and fluid additives; see for example U.S. Patents Nos.
  • Films and sub-assemblies containing electro-optic materials see for example U.S. Patents Nos.6,982,178 and 7,839,564;
  • Backplanes, adhesive layers and other auxiliary layers and methods used in displays see for example U.S. Patents Nos.7,116,318 and 7,535,624;
  • Color formation and color adjustment see for example U.S. Patents Nos. 7,075,502 and 7,839,564;
  • Methods for driving displays see for example U.S.
  • Patents Nos.7,012,600 and 7,453,445 (g) Applications of displays; see for example U.S. Patents Nos. 7,312,784 and 8,009,348; and (h) Non-electrophoretic displays, as described in U.S. Patent No. 6,241,921 and U.S. Patent Application Publication No.2015/0277160; and applications of encapsulation and microcell technology other than displays; see for example U.S. Patent Application Publications Nos.2015/0005720 and 2016/0012710.
  • electrophoretic media are regarded as sub-species of encapsulated electrophoretic media.
  • electrophoretic media are often opaque (since, for example, in many electrophoretic media, the particles substantially block transmission of visible light through the display) and operate in a reflective mode
  • many electrophoretic displays can be made to operate in a so-called "shutter mode" in which one display state is substantially opaque and one is light- transmissive. See, for example, U.S. Patents Nos.5,872,552; 6,130,774; 6,144,361; 6,172,798; 6,271,823; 6,225,971; and 6,184,856.
  • Dielectrophoretic displays which are similar to electrophoretic displays but rely upon variations in electric field strength, can operate in a similar mode; see U.S. Patent No.4,418,346.
  • Other types of electro-optic displays may also be capable of operating in shutter mode.
  • Electro-optic media operating in shutter mode may be useful in multi-layer structures for full color displays; in such structures, at least one layer adjacent the viewing surface of the display operates in shutter mode to expose or conceal a second layer more distant from the viewing surface.
  • An encapsulated electrophoretic display typically does not suffer from the clustering and settling failure mode of traditional electrophoretic devices and provides further advantages, such as the ability to print or coat the display on a wide variety of flexible and rigid substrates.
  • the word “printing” is intended to include all forms of printing and coating, including, but without limitation: pre-metered coatings such as patch die coating, slot or extrusion coating, slide or cascade coating, curtain coating; roll coating such as knife over roll coating, forward and reverse roll coating; gravure coating; dip coating; spray coating; meniscus coating; spin coating; brush coating; air knife coating; silk screen printing processes; electrostatic printing processes; thermal printing processes; ink jet printing processes; electrophoretic deposition (See U.S. Patent No. 7,339,715); and other similar techniques.)
  • pre-metered coatings such as patch die coating, slot or extrusion coating, slide or cascade coating, curtain coating
  • roll coating such as knife over roll coating, forward and reverse roll coating
  • gravure coating dip coating
  • spray coating meniscus coating
  • spin coating spin coating
  • brush coating air knife coating
  • silk screen printing processes electrostatic printing processes
  • thermal printing processes ink jet printing processes
  • electrophoretic deposition See U.S. Patent No. 7,339,715); and other similar
  • electro-optic display is a rotating bichromal member type as described, for example, in U.S. Patents Nos. 5,808,783; 5,777,782; 5,760,761; 6,054,071 6,055,091; 6,097,531; 6,128,124; 6,137,467; and 6,147,791 (although this type of display is often referred to as a "rotating bichromal ball" display, the term "rotating bichromal member" is preferred as more accurate since in some of the patents mentioned above the rotating members are not spherical).
  • Such a display uses a large number of small bodies (typically spherical or cylindrical) which have two or more sections with differing optical characteristics, and an internal dipole. These bodies are encapsulated and suspended within liquid-filled vacuoles within a matrix, the vacuoles being filled with liquid so that the bodies are free to rotate. The appearance of the display is changed by applying an electric field thereto, thus rotating the bodies to various positions and varying which of the sections of the bodies is seen through a viewing surface.
  • This type of electro-optic medium is typically bistable.
  • electro-optic display uses an electrochromic medium, for example an electrochromic medium in the form of a nanochromic film comprising an electrode formed at least in part from a semi-conducting metal oxide and a plurality of dye molecules capable of reversible color change attached to the electrode; see, for example O'Regan, B., et al., Nature 1991, 353, 737; and Wood, D., Information Display, 18(3), 24 (March 2002). See also Bach, U., et al., Adv. Mater., 2002, 14(11), 845. Nanochromic films of this type are also described, for example, in U.S. Patents Nos.6,301,038, 6,870,657, and 6,950,220.
  • Electro-optic displays manufactured using lamination procedures normally have a layer of lamination adhesive between the electro-optic layer itself and the backplane, and the presence of this lamination adhesive layer affects the electro-optic characteristics of the displays. In particular, the electrical conductivity of the lamination adhesive layer affects both the low temperature performance and the resolution of the display.
  • the low temperature performance of the display can (it has been found empirically) be improved by increasing the conductivity of the lamination adhesive layer, for example by doping the adhesive and/or binder with an inorganic or organic salt, such as potassium acetate, tetrabutylammonium chloride, tetrabutylammonium hexafluorophosphate, or other materials as described in the aforementioned U.S. Patent Nos. 7,012,735 and 7,173,752.
  • increasing the conductivity of the lamination adhesive tends to increase pixel blooming (a phenomenon whereby the area of the electro-optic layer which changes optical state in response to change of voltage at a pixel electrode is larger than the pixel electrode itself), and this blooming tends to reduce the resolution of the display.
  • dopants have been incorporated into the binder system of the electro-optic media, rather than the lamination adhesive.
  • colored encapsulated electrophoretic media particularly multicolored capsules with four pigments
  • highly conductive binders have demonstrated improved performance in electro-optic states, color gamut, and temperature performance, as well as blooming.
  • High concentrations of the dopants are required, and these high levels of concentration will significantly alter the mechanical properties of the binder, often leading to lamination and coating difficulties, or poor adhesion.
  • One aspect of the present invention is an electro-optic medium comprising an encapsulated material and a binder, the encapsulated material being configured to switch optical states upon application of an electric field, and the binder comprising a polymer having a plurality of side chains, wherein at least a portion of the side chains comprise an ionic moiety.
  • FIG. 1 to 3 are graphs illustrating a color gamut produced from colors measured from display samples comprising various electro-optic media having a binder according to an embodiment of the present invention.
  • Figure 4 is a graph illustrating a color gamut produced from colors measured from a display sample comprising an electro-optic medium having a binder not in accordance with an embodiment of the present invention.
  • Figures 5A and 5B are photographs of blooming results of a display samples comprising an adhesive layer having a low concentration of ionic dopant and an electro-optic media having a binder according to an embodiment of the present invention.
  • Figures 6A and 6B are photographs of blooming results of a display sample comprising an adhesive layer having a high concentration of ionic dopant and an electro-optic media having a binder not in accordance with the embodiment of the present invention.
  • the various embodiments of the present invention provide an electro- optic medium comprising an encapsulated material configured to switch optical states upon the application of an electric field and a binder that comprises a polymer having a plurality of side chains, wherein at least a portion of the side chains comprise an ionic moiety.
  • polymer includes both homo-polymers and copolymers.
  • the polymer is preferably a polyion having a high molecular weight (about 100,000 g/mol up to 1,000,000 g/mol), more preferably a polycation, most preferably a polycation comprising quaternized amines.
  • the polymers are preferably good film-forming polymers. When mixed into the binder and applied as a layer, the resulting film preferably exhibits consistent mechanical properties over the entire area of the film and is chemically compatible with the other materials within the display stack when incorporated into a display, such that phase separation is minimized or eliminated.
  • the conductivity of the polymer in the binder may be controlled by varying the molecular weight of the polymer or the number of ionic side chains along the polymeric backbone of the polymer. Blends of polymers may also be used in the binder compositions according to the various embodiments of the present invention.
  • the polymers with ionic side chains preferably exhibits a faint color, e.g. a pale yellow, but are more preferably colorless.
  • the films containing the polymers preferably exhibit substantially uniform conductivity over the area of the film, and preferably maintain this property over time to improve the lifetime operation of the display.
  • the binder compositions made according to the various embodiments of the present invention may be included in various types of encapsulated electro- optic materials, such as rotating bichromal members, electrowetting materials, or electrophoretic media.
  • the binder included in the various embodiments of the present invention are particularly well suited for encapsulated electrophoretic media comprising a plurality of electrically charged particles and a fluid, the charged particles being movable upon application of the electric field.
  • the plurality of electrically charged particles may comprise at least two differently colored particles, such as red, green, blue, cyan, magenta, yellow, black, and white.
  • the one or more polymers containing ionic side chains that may be included in the binder compositions according to the various embodiments of the present invention are preferably highly conductive.
  • the one or more polymers may have a conductivity of about 10- 10 to 10 -1 S/cm, preferably about 10 -9 to about 10 -2 S/cm, more preferably about 10 -8 to about 10 -4 S/cm, and most preferably a conductivity of about 10 -7 to 10 -6 S/cm.
  • the ionic functionality of the polymer may be covalently bonded to the polymeric backbone of the polymer.
  • the ionic functionality present in the side chains may be provided by anionic moieties, cationic moieties, zwitterionic moieties, and combinations thereof.
  • functionality of the side chains is anionic, it is preferred that functionality is provided by moieties that are not pH sensitive, such as sulfonic or phosphonic acid groups.
  • the ionic side chains may constitute with increasing preference in the order given, at least 5%, 10%, 15%, 20%, 25%, 30%, 35%, and 40%, and not more than, with increasing preference in the order given, 100%, 95%, 90%, 85%, 80%, 75%, 70%, 65%, 60%, 55%, 50%, and 45%.
  • the conductivity of the polymers may be controlled, not only by the number of ionic side chains, but also by the molecular weight of the polymers.
  • the ionic polymers included in the various embodiments of the present invention may have a number average molecular weight, with increasing preference in the order give, of at least 20,000; 50,000; 100,000; 150,000; 200,000; 250,000; 300,000; 350,000; and 400,000 g/mol, and not more than, with increasing preference in the order given, 1,000,000; 950,000; 900,000; 850,000; 800,000; 750,000; 700,000; 650,000; 600,000; 550,000; and 500,000 g/mol.
  • the molecular weight of the polymer, as well as its glass transition temperature (Tg), may be selected depending on the desired mechanical properties of the final film containing the polymer, as well as the desired physical properties of the materials during processing, such as lamination, when fabricating a display.
  • the ionic polymers may be straight or branched polymers, e.g. comb polymers, brush polymers, dendritic polymers, star-shaped polymers, etc.
  • the polymeric backbone may be derived from one or more polymers including, but not limited to, polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl acetate, polyacrylates, polymethacrylates, polyurethanes, polysaccharides, polyolefins, polyethers, polyesters, polypeptides, proteins, and combinations thereof.
  • the one or more polymers may be functionalized by reacting the one or more polymers with one or more or more compounds including, but not limited to, sulfonic acids, phosphonic acids, quarternary amines, pyridines, imidazoles, carboxylic acids, salts of the aforementioned compounds, and combinations thereof.
  • the binder composition may further comprise one or more polymers and/or oligomers that are not functionalized with an ionic side chain, such as water-soluble polymers, water-borne polymers, oil-soluble polymers, thermoset (e.g. epoxies) and thermoplastic polymers (e.g.
  • additives may include additives, such as small molecule coating aids or thickeners to modify the viscosity of the binder.
  • water-soluble polymers are the various polysaccharides, the polyvinyl alcohols, N-methylpyrrolidone, N-vinylpyrrolidone, the various Carbowax® species (Union Carbide, Danbury, Conn), and poly-2-hydroxyethylacrylate.
  • the water-dispersed or water-borne systems are generally latex compositions, typified by the Neorez® and Neocryl® resins (Zeneca Resins, Wilmington, Mass.), Acrysol® (Dow, Philadelphia, Pa.), Bayhydrol® (Bayer, Pittsburgh, Pa.), and the Cytec Industries (West Paterson, N.J.) HP line.
  • the electro-optic media according to the various embodiments of the present invention comprise a blend of the aforementioned binder and encapsulated material.
  • the internal phase of the electro-optic medium preferably includes charged pigment particles in a suspending fluid.
  • the fluids may be of low dielectric constant (preferably less than 10 and desirably less than 3).
  • Especially preferred solvents include aliphatic hydrocarbons such as heptane, octane, and petroleum distillates such as Isopar ® (Exxon Mobil) or Isane® (Total); terpenes such as limonene, e.g., l-limonene; and aromatic hydrocarbons such as toluene.
  • a particularly preferred solvent is limonene, since it combines a low dielectric constant (2.3) with a relatively high refractive index (1.47).
  • the index of refraction of the internal phase may be modified with the addition of index matching agents such as Cargille® index matching fluids available from Cargille-Sacher Laboratories Inc. (Cedar Grove, NJ).
  • index matching agents such as Cargille® index matching fluids available from Cargille-Sacher Laboratories Inc. (Cedar Grove, NJ).
  • the refractive index of the dispersion of particles match as closely as possible that of the encapsulating material.
  • Charged pigment particles may be of a variety of colors and compositions. Additionally, the charged pigment particles may be functionalized with surface polymers to improve state stability. Such pigments are described in U.S. Patent Publication No.
  • the charged particles are of a white color
  • they may be formed from an inorganic pigment such as TiO2, ZrO2, ZnO, Al2O3, Sb2O3, BaSO4, PbSO4 or the like.
  • They may also be polymer particles with a high refractive index (>1.5) and of a certain size (>100 nm) to exhibit a white color, or composite particles engineered to have a desired index of refraction.
  • Black charged particles they may be formed from CI pigment black 26 or 28 or the like (e.g., manganese ferrite black spinel or copper chromite black spinel) or carbon black.
  • Non-white and non- black may be formed from organic pigments such as CI pigment PR 254, PR122, PR149, PG36, PG58, PG7, PB28, PB15:3, PY83, PY138, PY150, PY155 or PY20.
  • Clariant Hostaperm Red D3G 70-EDS Hostaperm Pink E-EDS, PV fast red D3G, Hostaperm red D3G 70, Hostaperm Blue B2G-EDS, Hostaperm Yellow H4G-EDS, Novoperm Yellow HR-70-EDS, Hostaperm Green GNX, BASF Irgazine red L 3630, Cinquasia Red L 4100 HD, and Irgazin Red L 3660 HD; Sun Chemical phthalocyanine blue, phthalocyanine green, diarylide yellow or diarylide AAOT yellow. Color particles can also be formed from inorganic pigments, such as CI pigment blue 28, CI pigment green 50, CI pigment yellow 227, and the like.
  • the surface of the charged particles may be modified by known techniques based on the charge polarity and charge level of the particles required, as described in U.S. Pat. Nos. 6,822,782, 7,002,728, 9,366,935, and 9,372,380 as well as US Publication No.2014-0011913, the contents of all of which are incorporated herein by reference in their entirety.
  • the particles may exhibit a native charge, or may be charged explicitly using a charge control agent, or may acquire a charge when suspended in a solvent or solvent mixture.
  • Suitable charge control agents are well known in the art; they may be polymeric or non- polymeric in nature or may be ionic or non-ionic.
  • charge control agent may include, but are not limited to, Solsperse 17000 (active polymeric dispersant), Solsperse 9000 (active polymeric dispersant), OLOA 11000 (succinimide ashless dispersant), Unithox 750 (ethoxylates), Span 85 (sorbitan trioleate), Petronate L (sodium sulfonate), Alcolec LV30 (soy lecithin), Petrostep B100 (petroleum sulfonate) or B70 (barium sulfonate), Aerosol OT, polyisobutylene derivatives or poly(ethylene co-butylene) derivatives, and the like.
  • internal phases may include stabilizers, surfactants and charge control agents.
  • a stabilizing material may be adsorbed on the charged pigment particles when they are dispersed in the solvent. This stabilizing material keeps the particles separated from one another so that the variable transmission medium is substantially non-transmissive when the particles are in their dispersed state.
  • dispersing charged particles typically a carbon black, as described above
  • a surfactant typically comprises a polar "head group” and a non-polar "tail group” that is compatible with or soluble in the solvent.
  • the non-polar tail group be a saturated or unsaturated hydrocarbon moiety, or another group that is soluble in hydrocarbon solvents, such as for example a poly(dialkylsiloxane).
  • the polar group may be any polar organic functionality, including ionic materials such as ammonium, sulfonate or phosphonate salts, or acidic or basic groups.
  • Particularly preferred head groups are carboxylic acid or carboxylate groups.
  • Stabilizers suitable for use with the invention include polyisobutylene and polystyrene.
  • dispersants such as polyisobutylene succinimide and/or sorbitan trioleate, and/or 2-hexyldecanoic acid are added.
  • gelatin-based capsule walls used in the variable transmission devices have been described in many of the E Ink and MIT patents and applications mentioned above.
  • the gelatin is available from various commercial suppliers, such as Sigma Aldrich or Gelitia USA. It can be obtained in a variety of grades and purity depending upon the needs of the application.
  • Gelatin primarily comprises collagen that has been collected from animal products (cow, pig, poultry, fish) and hydrolyzed. It comprises a mixture of peptides and proteins.
  • acacia glycol arabic
  • Acacia is a complex mixture of glycoproteins and polysaccharides, and it is often used as a stabilizer in food stuffs.
  • Aqueous solutions of acacia and gelatin can be coacervated with a non-polar internal phase, as described below, to produce clear and flexible capsules containing internal phase.
  • Capsules incorporating gelatin/acacia may be prepared as follows; see, for example U.S. Patent No.7,170,670, incorporated by reference in its entirety. In this process, an aqueous mixture of gelatin and acacia is emulsified with a hydrocarbon internal phase (or other water- immiscible phase) to encapsulate the internal phase.
  • the mixture is heated and the pH lowered to form a gelatin/acacia coacervate, thereby forming capsules.
  • the temperature of the resultant mixture is then lowered and an aqueous solution of glutaraldehyde (an agent for cross-linking the capsule walls) is added.
  • the resultant mixture is then warmed and stirred vigorously.
  • a finishing step (holding the capsule mixture at 50 C for about one hour) is used to deactivate remaining glutaraldehyde, thereby assuring that the capsules will separate during sieving.
  • the process yields capsules in the range of 20-100 ⁇ m and often incorporates over 50 per cent of the starting materials into useable capsules.
  • the capsules produced are then separated by size by sieving or other size exclusion sorting.
  • the capsules are mixed with the binder to create a slurry for coating, e.g., using slot coating, knife coating, spin coating, etc.
  • the weight ratio of capsule to binder in the electro-optic medium may be 4:1 to 50:1, more preferably 10:1 to 30:1, and most preferably about 15:1.
  • the electro-optic media made according to the various embodiments of the present invention may be incorporated into electro-optic displays and assemblies.
  • An electro-optic display normally comprises a layer of electro-optic material and at least two other layers disposed on opposed sides of the electro-optic material, one of these two layers being an electrode layer. In most such displays both the layers are electrode layers, and one or both of the electrode layers are patterned to define the pixels of the display.
  • one electrode layer may be patterned into elongate row electrodes and the other into elongate column electrodes running at right angles to the row electrodes, the pixels being defined by the intersections of the row and column electrodes.
  • one electrode layer has the form of a single continuous electrode and the other electrode layer is patterned into a matrix of pixel electrodes, each of which defines one pixel of the display.
  • only one of the layers adjacent the electro- optic layer comprises an electrode, the layer on the opposed side of the electro-optic layer typically being a protective layer intended to prevent the movable electrode damaging the electro-optic layer.
  • the manufacture of a three-layer electro-optic display normally involves at least one lamination operation.
  • a process for manufacturing an encapsulated electrophoretic display in which an encapsulated electrophoretic medium comprising capsules in a binder is coated on to a flexible substrate comprising indium-tin-oxide (ITO) or a similar conductive coating (which acts as one electrode of the final display) on a plastic film, the capsules/binder coating being dried to form a coherent layer of the electrophoretic medium firmly adhered to the substrate.
  • ITO indium-tin-oxide
  • a similar conductive coating which acts as one electrode of the final display
  • a backplane containing an array of pixel electrodes and an appropriate arrangement of conductors to connect the pixel electrodes to drive circuitry, is prepared.
  • the substrate having the capsule/binder layer thereon is laminated to the backplane using a lamination adhesive.
  • a lamination adhesive A very similar process can be used to prepare an electrophoretic display usable with a stylus or similar movable electrode by replacing the backplane with a simple protective layer, such as a plastic film, over which the stylus or other movable electrode can slide.
  • the backplane is itself flexible and is prepared by printing the pixel electrodes and conductors on a plastic film or other flexible substrate.
  • the obvious lamination technique for mass production of displays by this process is roll lamination using a lamination adhesive. Similar manufacturing techniques can be used with other types of electro-optic displays. For example, a microcell electrophoretic medium or a rotating bichromal member medium may be laminated to a backplane in substantially the same manner as an encapsulated electrophoretic medium.
  • a microcell electrophoretic medium or a rotating bichromal member medium may be laminated to a backplane in substantially the same manner as an encapsulated electrophoretic medium.
  • the aforementioned U.S. Patent No.6,982,178 describes a method of assembling a solid electro-optic display (including an encapsulated electrophoretic display) which is well adapted for mass production.
  • this patent describes a so-called “front plane laminate” (“FPL”) which comprises, in order, a light-transmissive electrically-conductive layer; a layer of a solid electro-optic medium in electrical contact with the electrically- conductive layer; an adhesive layer; and a release sheet.
  • FPL front plane laminate
  • the light-transmissive electrically-conductive layer will be carried on a light-transmissive substrate, which is preferably flexible, in the sense that the substrate can be manually wrapped around a drum (say) 10 inches (254 mm) in diameter without permanent deformation.
  • the term "light- transmissive" is used in this patent and herein to mean that the layer thus designated transmits sufficient light to enable an observer, looking through that layer, to observe the change in display states of the electro-optic medium, which will normally be viewed through the electrically-conductive layer and adjacent substrate (if present); in cases where the electro- optic medium displays a change in reflectivity at non-visible wavelengths, the term “light- transmissive” should of course be interpreted to refer to transmission of the relevant non-visible wavelengths.
  • the substrate will typically be a polymeric film, and will normally have a thickness in the range of about 1 to about 25 mil (25 to 634 Pm), preferably about 2 to about 10 mil (51 to 254 Pm).
  • the electrically-conductive layer is conveniently a thin metal or metal oxide layer of, for example, aluminum or ITO, or may be a conductive polymer.
  • PET poly(ethylene terephthalate)
  • PET poly(ethylene terephthalate)
  • Mylar is a Registered Trade Mark
  • E.I. du Pont de Nemours & Company Wilmington DE, and such commercial materials may be used with good results in the front plane laminate.
  • Assembly of an electro-optic display using such a front plane laminate may be effected by removing the release sheet from the front plane laminate and contacting the adhesive layer with the backplane under conditions effective to cause the adhesive layer to adhere to the backplane, thereby securing the adhesive layer, layer of electro-optic medium and electrically-conductive layer to the backplane.
  • This process is well-adapted to mass production since the front plane laminate may be mass produced, typically using roll-to-roll coating techniques, and then cut into pieces of any size needed for use with specific backplanes.
  • U.S. Patent No. 7,561,324 describes a so-called "double release sheet" which is essentially a simplified version of the front plane laminate of the aforementioned U.S.
  • One form of the double release sheet comprises a layer of a solid electro-optic medium sandwiched between two adhesive layers, one or both of the adhesive layers being covered by a release sheet.
  • Another form of the double release sheet comprises a layer of a solid electro-optic medium sandwiched between two release sheets.
  • Both forms of the double release film are intended for use in a process generally similar to the process for assembling an electro-optic display from a front plane laminate already described, but involving two separate laminations; typically, in a first lamination the double release sheet is laminated to a front electrode to form a front sub-assembly, and then in a second lamination the front sub-assembly is laminated to a backplane to form the final display, although the order of these two laminations could be reversed if desired.
  • U. S. Patent No. 7,839,564 describes a so-called "inverted front plane laminate", which is a variant of the front plane laminate described in the aforementioned U.S. Patent No. 6,982,178.
  • This inverted front plane laminate comprises, in order, at least one of a light- transmissive protective layer and a light-transmissive electrically-conductive layer; an adhesive layer; a layer of a solid electro-optic medium; and a release sheet.
  • This inverted front plane laminate is used to form an electro-optic display having a layer of lamination adhesive between the electro-optic layer and the front electrode or front substrate; a second, typically thin layer of adhesive may or may not be present between the electro-optic layer and a backplane.
  • Aqueous capsule slurries comprising gelatin/acacia microcapsules having a mean size of approximate 40 Pm containing a dispersion of white and three different colored pigments (cyan, magenta, and yellow) in a nonpolar solvent were mixed into four different binders; A) a poly(vinyl alcohol) with cationic side chains, B) a low molecular weight polyvinylpyrrolidone with cationic side chains, C) a high molecular weight polyvinylpyrrolidone with cationic side chains, and D) a polyurethane dispersion control.
  • Each binder was mixed at a ratio of 1 part by weight binder to 15 parts by weight of capsules.
  • the polyurethane binder was also mixed with thickeners, a small molecule ionic dopant, and coating aids.
  • the resultant mixtures were bar coated on to a 125 ⁇ m thick indium-tin oxide coated polyester film.
  • the coated film was dried to produce an electrophoretic medium approximately 21 ⁇ m thick (18-25 g/m 2 depending on density) containing essentially a single layer of capsules.
  • Each dried film was laminated with a polyurethane adhesive doped with conductive salts, which was subsequently laminated to a screen-printed backplane assembly approximately 2 inches square to create an electrophoretic display test module.
  • the module was driven using a waveform summarized in Table 1.
  • the basic waveform is divided into six sections, each 20.5 seconds long. During each section a square-wave AC fundamental with 30 Hz frequency is offset by a DC voltage as shown in the table (not every offset is shown, but the sequence should be obvious from the table entries).
  • the duty cycle of the square wave AC i.e., the proportion of the time of one cycle of positive and negative voltages during which the positive voltage is applied
  • the whole test consists of three repetitions of the basic waveform, each time with a different voltage offset sequence, shown as “High V offset”, “Mid V offset” and “Low V offset”.
  • the initial “High V offset” is -15V.
  • the magnitude of the square wave AC is +/- 30V for the “High V offset” sequence, +/- 20V for the “Mid V offset” sequence, and “+/- 10V for the “Low V offset” sequence.
  • Table 1 [0047] As the display was electrically driven, various optical states were generated and reflection spectra were acquired. These were used to calculate CIE L*, a* and b* values for the light reflected from the display as the waveform was applied.
  • a distance in L*a*b* space of the color of the display from each of the eight SNAP (Specifications for Newsprint Advertising Production) color standard primaries was calculated LQ ⁇ XQLWV ⁇ RI ⁇ ( ⁇ )RU ⁇ HDFK ⁇ HOHFWURSKRUHWLF ⁇ GLVSOD ⁇ WHVWHG ⁇ WKH ⁇ PLQLPXP ⁇ GLVWDQFHV ⁇ RI ⁇ WKH ⁇ FRORUV ⁇ displayed from the SNAP primaries were recorded.
  • the primary colors were red, green, blue, yellow, cyan, magenta, white and black (R, G, B, Y, C, M, W, and K).
  • the overall color gamut for the electrophoretic displays made with binders comprising a polymer with ionic side chains was approximately twice the size of the control display, which was made with control binder comprising small-molecule-doped polyurethane dispersion. More specifically, electrophoretic displays comprising inventive binders A, B, and C (corresponding to Figures 1, 2, and 3) have volume color gamuts of approximately 110,000, 79,000, and 86,000 versus 49,000 for the control display (corresponding to Figure 4). [0049] Evaluations of electrophoretic displays comprising the control and inventive electrophoretic media at different temperatures (0 o C, 25 o C, and 50 o C) were also performed.
  • the electrophoretic display comprising (a) the inventive electrophoretic medium with a poly(vinyl alcohol) having cationic side chains polymer binder (Binder A), and (b) an adhesive layer having an ionic dopant (tetrabutylammonium hexafluorophosphate) at a concentration of 180 ppm, exhibited very little blooming at both temperatures.
  • Figures 5A and 5B show the result of blooming evaluation at 25 o C.
  • an electrophoretic display comprising (a) an electrophoretic medium with a polyurethane dispersion control binder (Binder D) and (b) an adhesive layer having an ionic dopant (tetrabutylammonium hexafluorophosphate) at a high concentration of 1000 ppm, bloomed extensively even at 25oC (see Figures 6A and 6B), losing resolution in the display. The resolution loss increased at higher temperatures (35 o C).
  • increasing the conductivity of the lamination adhesive increases blooming. That is, the higher the dopant level in the adhesive layer of the electro-optic device, the worse the blooming.
  • the inventive binder material comprising a polymer having ionic side chains
  • a lower dopant concentration can be used in the lamination adhesive layer, reducing blooming at higher temperatures and at the same time preserving a good electro-optic performance at low temperatures.

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Abstract

L'invention concerne un milieu électro-optique comprenant un matériau encapsulé et un liant, le matériau encapsulé étant configuré pour commuter des états optiques lors de l'application d'un champ électrique, et le liant comprenant un polymère ayant une pluralité de chaînes latérales, au moins une partie des chaînes latérales ayant une fraction ionique.
PCT/US2023/028441 2023-07-24 2023-07-24 Ensembles électro-optiques et matériaux destinés à être utilisés dans ceux-ci Pending WO2025023926A1 (fr)

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Citations (166)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418346A (en) 1981-05-20 1983-11-29 Batchelder J Samuel Method and apparatus for providing a dielectrophoretic display of visual information
US5760761A (en) 1995-12-15 1998-06-02 Xerox Corporation Highlight color twisting ball display
US5777782A (en) 1996-12-24 1998-07-07 Xerox Corporation Auxiliary optics for a twisting ball display
US5808783A (en) 1996-06-27 1998-09-15 Xerox Corporation High reflectance gyricon display
US5872552A (en) 1994-12-28 1999-02-16 International Business Machines Corporation Electrophoretic display
US5930026A (en) 1996-10-25 1999-07-27 Massachusetts Institute Of Technology Nonemissive displays and piezoelectric power supplies therefor
US5961804A (en) 1997-03-18 1999-10-05 Massachusetts Institute Of Technology Microencapsulated electrophoretic display
US6017584A (en) 1995-07-20 2000-01-25 E Ink Corporation Multi-color electrophoretic displays and materials for making the same
US6055091A (en) 1996-06-27 2000-04-25 Xerox Corporation Twisting-cylinder display
US6054071A (en) 1998-01-28 2000-04-25 Xerox Corporation Poled electrets for gyricon-based electric-paper displays
US6067185A (en) 1997-08-28 2000-05-23 E Ink Corporation Process for creating an encapsulated electrophoretic display
US6097531A (en) 1998-11-25 2000-08-01 Xerox Corporation Method of making uniformly magnetized elements for a gyricon display
US6120839A (en) 1995-07-20 2000-09-19 E Ink Corporation Electro-osmotic displays and materials for making the same
US6120588A (en) 1996-07-19 2000-09-19 E Ink Corporation Electronically addressable microencapsulated ink and display thereof
US6128124A (en) 1998-10-16 2000-10-03 Xerox Corporation Additive color electric paper without registration or alignment of individual elements
US6130774A (en) 1998-04-27 2000-10-10 E Ink Corporation Shutter mode microencapsulated electrophoretic display
US6137467A (en) 1995-01-03 2000-10-24 Xerox Corporation Optically sensitive electric paper
US6144361A (en) 1998-09-16 2000-11-07 International Business Machines Corporation Transmissive electrophoretic display with vertical electrodes
US6147791A (en) 1998-11-25 2000-11-14 Xerox Corporation Gyricon displays utilizing rotating elements and magnetic latching
US6184856B1 (en) 1998-09-16 2001-02-06 International Business Machines Corporation Transmissive electrophoretic display with laterally adjacent color cells
US6225971B1 (en) 1998-09-16 2001-05-01 International Business Machines Corporation Reflective electrophoretic display with laterally adjacent color cells using an absorbing panel
US6241921B1 (en) 1998-05-15 2001-06-05 Massachusetts Institute Of Technology Heterogeneous display elements and methods for their fabrication
US6249271B1 (en) 1995-07-20 2001-06-19 E Ink Corporation Retroreflective electrophoretic displays and materials for making the same
US6262833B1 (en) 1998-10-07 2001-07-17 E Ink Corporation Capsules for electrophoretic displays and methods for making the same
US6262706B1 (en) 1995-07-20 2001-07-17 E Ink Corporation Retroreflective electrophoretic displays and materials for making the same
US6271823B1 (en) 1998-09-16 2001-08-07 International Business Machines Corporation Reflective electrophoretic display with laterally adjacent color cells using a reflective panel
US6300932B1 (en) 1997-08-28 2001-10-09 E Ink Corporation Electrophoretic displays with luminescent particles and materials for making the same
US6301038B1 (en) 1997-02-06 2001-10-09 University College Dublin Electrochromic system
US6323989B1 (en) 1996-07-19 2001-11-27 E Ink Corporation Electrophoretic displays using nanoparticles
US6327072B1 (en) 1999-04-06 2001-12-04 E Ink Corporation Microcell electrophoretic displays
US6377387B1 (en) 1999-04-06 2002-04-23 E Ink Corporation Methods for producing droplets for use in capsule-based electrophoretic displays
US6392786B1 (en) 1999-07-01 2002-05-21 E Ink Corporation Electrophoretic medium provided with spacers
US6459418B1 (en) 1995-07-20 2002-10-01 E Ink Corporation Displays combining active and non-active inks
US6515649B1 (en) 1995-07-20 2003-02-04 E Ink Corporation Suspended particle displays and materials for making the same
US20030048522A1 (en) 2001-09-13 2003-03-13 Rong-Chang Liang Three-dimensional electrophoretic displays
US6538801B2 (en) 1996-07-19 2003-03-25 E Ink Corporation Electrophoretic displays using nanoparticles
US6580545B2 (en) 2001-04-19 2003-06-17 E Ink Corporation Electrochromic-nanoparticle displays
US20030151029A1 (en) 2002-02-11 2003-08-14 Hsu Wan Peter Core-shell particles for electrophoretic display
US20030164480A1 (en) 2002-01-03 2003-09-04 Wu Zarng-Arh George Novel electrophoretic dispersion with a fluorinated solvent and a charge controlling agent
US20030197916A1 (en) 2002-04-23 2003-10-23 Jerry Chung Electro-magnetophoresis display
US20040030125A1 (en) 2002-05-17 2004-02-12 Ying-Syi Li Novel Fluorinated silicon (IV) phthalocyanines and naphthalocyanines for electrophoretic, magnetophoretic or electromagnetophoretic display
US6693620B1 (en) 1999-05-03 2004-02-17 E Ink Corporation Threshold addressing of electrophoretic displays
US6721083B2 (en) 1996-07-19 2004-04-13 E Ink Corporation Electrophoretic displays using nanoparticles
US6727881B1 (en) 1995-07-20 2004-04-27 E Ink Corporation Encapsulated electrophoretic displays and methods and materials for making the same
US6822782B2 (en) 2001-05-15 2004-11-23 E Ink Corporation Electrophoretic particles and processes for the production thereof
US6831771B2 (en) 2003-01-08 2004-12-14 Sipix Imaging Inc. Electronic whiteboard using electrophoretic display
US6839158B2 (en) 1997-08-28 2005-01-04 E Ink Corporation Encapsulated electrophoretic displays having a monolayer of capsules and materials and methods for making the same
US20050012980A1 (en) 2003-05-02 2005-01-20 E Ink Corporation Electrophoretic displays with controlled amounts of pigment
US6866760B2 (en) 1998-08-27 2005-03-15 E Ink Corporation Electrophoretic medium and process for the production thereof
US6870661B2 (en) 2001-05-15 2005-03-22 E Ink Corporation Electrophoretic displays containing magnetic particles
US6870657B1 (en) 1999-10-11 2005-03-22 University College Dublin Electrochromic device
US20050136347A1 (en) 2003-11-04 2005-06-23 Haiyan Gu Electrophoretic dispersions
US20050156340A1 (en) 2004-01-20 2005-07-21 E Ink Corporation Preparation of capsules
US6922276B2 (en) 2002-12-23 2005-07-26 E Ink Corporation Flexible electro-optic displays
US6927892B2 (en) 2002-03-21 2005-08-09 Sipix Imaging Inc. Magnetophoretic and electromagnetophoretic displays
US6950220B2 (en) 2002-03-18 2005-09-27 E Ink Corporation Electro-optic displays, and methods for driving same
US6956690B2 (en) 2003-02-06 2005-10-18 Sipix Imaging, Inc. Electrophoretic display with a bi-modal particle system
US6958849B2 (en) 2002-09-18 2005-10-25 Sipix Imaging Inc. Electrophoretic display with improved temperature latitude and switching performance
US6958848B2 (en) 2002-05-23 2005-10-25 E Ink Corporation Capsules, materials for use therein and electrophoretic media and displays containing such capsules
US6982178B2 (en) 2002-06-10 2006-01-03 E Ink Corporation Components and methods for use in electro-optic displays
US6987603B2 (en) 2003-01-31 2006-01-17 E Ink Corporation Construction of electrophoretic displays
US7002728B2 (en) 1997-08-28 2006-02-21 E Ink Corporation Electrophoretic particles, and processes for the production thereof
US7012600B2 (en) 1999-04-30 2006-03-14 E Ink Corporation Methods for driving bistable electro-optic displays, and apparatus for use therein
US7012735B2 (en) 2003-03-27 2006-03-14 E Ink Corporaiton Electro-optic assemblies, and materials for use therein
US7038655B2 (en) 1999-05-03 2006-05-02 E Ink Corporation Electrophoretic ink composed of particles with field dependent mobilities
US7052766B2 (en) 2002-01-03 2006-05-30 Sipix Imaging, Inc. Functionalized halogenated polymers for microencapsulation
US20060132896A1 (en) 2002-02-11 2006-06-22 Hsu Wan P Core-shell particles for electrophoretic display
US7071913B2 (en) 1995-07-20 2006-07-04 E Ink Corporation Retroreflective electrophoretic displays and materials for making the same
US7075502B1 (en) 1998-04-10 2006-07-11 E Ink Corporation Full color reflective display with multichromatic sub-pixels
US7079305B2 (en) 2001-03-19 2006-07-18 E Ink Corporation Electrophoretic medium and process for the production thereof
US7109968B2 (en) 1995-07-20 2006-09-19 E Ink Corporation Non-spherical cavity electrophoretic displays and methods and materials for making the same
US7110164B2 (en) 2002-06-10 2006-09-19 E Ink Corporation Electro-optic displays, and processes for the production thereof
US7113323B2 (en) 2002-03-21 2006-09-26 Sipix Imaging, Inc. Magnetophoretic and electromagnetophoretic displays
US7116318B2 (en) 2002-04-24 2006-10-03 E Ink Corporation Backplanes for display applications, and components for use therein
US7141688B2 (en) 2002-10-15 2006-11-28 Sipix Imaging, Inc. Fluorinated dye stabilizers in fluorinated dielectric solvent
US7142351B2 (en) 2000-03-03 2006-11-28 Sipix Imaging, Inc. Electro-magnetophoresis display
US20060281924A1 (en) 2003-08-08 2006-12-14 Jin Yang Fluorinated dyes or colorants and their uses
US7170670B2 (en) 2001-04-02 2007-01-30 E Ink Corporation Electrophoretic medium and display with improved image stability
US7173752B2 (en) 2003-11-05 2007-02-06 E Ink Corporation Electro-optic displays, and materials for use therein
US7184197B2 (en) 2003-01-30 2007-02-27 Sipix Imaging, Inc. High performance capsules for electrophoretic displays
US20070091417A1 (en) 2005-10-25 2007-04-26 E Ink Corporation Electrophoretic media and displays with improved binder
US7226550B2 (en) 2002-10-10 2007-06-05 Sipix Imaging, Inc. Electrophoretic dispersions
US7230751B2 (en) 2005-01-26 2007-06-12 E Ink Corporation Electrophoretic displays using gaseous fluids
US7230750B2 (en) 2001-05-15 2007-06-12 E Ink Corporation Electrophoretic media and processes for the production thereof
US7236290B1 (en) 2000-07-25 2007-06-26 E Ink Corporation Electrophoretic medium with improved stability
US7236291B2 (en) 2003-04-02 2007-06-26 Bridgestone Corporation Particle use for image display media, image display panel using the particles, and image display device
US7242513B2 (en) 1997-08-28 2007-07-10 E Ink Corporation Encapsulated electrophoretic displays having a monolayer of capsules and materials and methods for making the same
US7247379B2 (en) 1997-08-28 2007-07-24 E Ink Corporation Electrophoretic particles, and processes for the production thereof
US7277218B2 (en) 2003-11-04 2007-10-02 Sipix Imaging, Inc. Electrophoretic compositions
US7286279B2 (en) 2002-07-30 2007-10-23 Sipix Imaging, Inc. Microencapsulation processes and compositions for electrophoretic displays
US20070268567A1 (en) 2000-03-03 2007-11-22 Jerry Chung Electro-magnetophoresis display
US7304634B2 (en) 1995-07-20 2007-12-04 E Ink Corporation Rear electrode structures for electrophoretic displays
US7312784B2 (en) 2001-03-13 2007-12-25 E Ink Corporation Apparatus for displaying drawings
US7312916B2 (en) 2002-08-07 2007-12-25 E Ink Corporation Electrophoretic media containing specularly reflective particles
US7321459B2 (en) 2002-03-06 2008-01-22 Bridgestone Corporation Image display device and method
US7339715B2 (en) 2003-03-25 2008-03-04 E Ink Corporation Processes for the production of electrophoretic displays
US20080130092A1 (en) 2004-03-23 2008-06-05 E Ink Corporation Light modulators
US7411719B2 (en) 1995-07-20 2008-08-12 E Ink Corporation Electrophoretic medium and process for the production thereof
US7420549B2 (en) 2003-10-08 2008-09-02 E Ink Corporation Electro-wetting displays
US7453445B2 (en) 2004-08-13 2008-11-18 E Ink Corproation Methods for driving electro-optic displays
US20090009852A1 (en) 2001-05-15 2009-01-08 E Ink Corporation Electrophoretic particles and processes for the production thereof
US7477444B2 (en) 2006-09-22 2009-01-13 E Ink Corporation & Air Products And Chemical, Inc. Electro-optic display and materials for use therein
US20090122389A1 (en) 2007-11-14 2009-05-14 E Ink Corporation Electro-optic assemblies, and adhesives and binders for use therein
US7535624B2 (en) 2001-07-09 2009-05-19 E Ink Corporation Electro-optic display and materials for use therein
US7561324B2 (en) 2002-09-03 2009-07-14 E Ink Corporation Electro-optic displays
US7580180B2 (en) 2002-03-21 2009-08-25 Sipix Imaging, Inc. Magnetophoretic and electromagnetophoretic displays
US7679814B2 (en) 2001-04-02 2010-03-16 E Ink Corporation Materials for use in electrophoretic displays
US20100148385A1 (en) 2001-05-15 2010-06-17 E Ink Corporation Electrophoretic media and processes for the production thereof
US7839564B2 (en) 2002-09-03 2010-11-23 E Ink Corporation Components and methods for use in electro-optic displays
US7848006B2 (en) 1995-07-20 2010-12-07 E Ink Corporation Electrophoretic displays with controlled amounts of pigment
US7903319B2 (en) 2006-07-11 2011-03-08 E Ink Corporation Electrophoretic medium and display with improved image stability
US7910175B2 (en) 2003-03-25 2011-03-22 E Ink Corporation Processes for the production of electrophoretic displays
US7952790B2 (en) 2006-03-22 2011-05-31 E Ink Corporation Electro-optic media produced using ink jet printing
US8009348B2 (en) 1999-05-03 2011-08-30 E Ink Corporation Machine-readable displays
US20110217639A1 (en) 2010-03-02 2011-09-08 Sprague Robert A Electrophoretic display fluid
US8018640B2 (en) 2006-07-13 2011-09-13 E Ink Corporation Particles for use in electrophoretic displays
US8035886B2 (en) 1996-07-19 2011-10-11 E Ink Corporation Electronically addressable microencapsulated ink and display thereof
US8115729B2 (en) 1999-05-03 2012-02-14 E Ink Corporation Electrophoretic display element with filler particles
US20120049125A1 (en) 2010-08-24 2012-03-01 Hui Du Electrophoretic dispersion
US8129655B2 (en) 2002-09-03 2012-03-06 E Ink Corporation Electrophoretic medium with gaseous suspending fluid
US20120112131A1 (en) 2010-11-05 2012-05-10 Yu Li Electrophoretic dispersion
US8257614B2 (en) 2003-11-04 2012-09-04 Sipix Imaging, Inc. Electrophoretic dispersions
US8270064B2 (en) 2009-02-09 2012-09-18 E Ink Corporation Electrophoretic particles, and processes for the production thereof
US8305341B2 (en) 1995-07-20 2012-11-06 E Ink Corporation Dielectrophoretic displays
US8363306B2 (en) 2010-04-05 2013-01-29 Sipix Imaging, Inc. Pigment particles for electrophoretic display
US8390918B2 (en) 2001-04-02 2013-03-05 E Ink Corporation Electrophoretic displays with controlled amounts of pigment
US8446664B2 (en) 2010-04-02 2013-05-21 E Ink Corporation Electrophoretic media, and materials for use therein
US20130161565A1 (en) 2011-12-27 2013-06-27 Peter B. Laxton High Molecular Weight Steric Barrier for Electrophoretic Particles
US20130193385A1 (en) 2012-01-27 2013-08-01 Yu Li Electrophoretic dispersion
US20130244149A1 (en) 2012-03-14 2013-09-19 Ming Wang Charged pigment particles for electrophoretic display
US8582196B2 (en) 2001-05-15 2013-11-12 E Ink Corporation Electrophoretic particles and processes for the production thereof
US20140011913A1 (en) 2011-02-03 2014-01-09 Sipix Imaging, Inc. Electrophoretic fluid
US8654436B1 (en) 2009-10-30 2014-02-18 E Ink Corporation Particles for use in electrophoretic displays
US20140078024A1 (en) 2002-08-06 2014-03-20 E Ink Corporation Protection of electro-optic displays against thermal effects
US20140078857A1 (en) 2012-09-20 2014-03-20 Fit Systems, Llc Apparatus for mixing measured amounts of concentrate with a dilutant and method of using same
US20140078576A1 (en) 2010-03-02 2014-03-20 Sipix Imaging, Inc. Electrophoretic display device
US20140104674A1 (en) 2012-10-15 2014-04-17 Sipix Technology Inc. Display medium and manufacturing method thereof and electrophoretic display therewith
US20140231728A1 (en) 2013-02-15 2014-08-21 Sipix Imaging, Inc. Electrophoretic fluid
US20140339481A1 (en) 2012-01-27 2014-11-20 E Ink California, Llc Electrophoretic dispersion
US8902491B2 (en) 2011-09-23 2014-12-02 E Ink California, Llc Additive for improving optical performance of an electrophoretic display
US20150005720A1 (en) 2006-07-18 2015-01-01 E Ink California, Llc Electrophoretic display
US20150015932A1 (en) 2013-01-10 2015-01-15 E Ink Corporation Electro-optic display with controlled electrochemical reactions
US8961831B2 (en) 2011-05-31 2015-02-24 E Ink California, Llc Silane-containing pigment particles for electrophoretic display
US9052564B2 (en) 2012-03-21 2015-06-09 E Ink California, Llc Electrophoretic dispersion
US20150177589A1 (en) 2002-10-16 2015-06-25 E Ink Corporation Electrophoretic displays
US20150177590A1 (en) 2011-12-27 2015-06-25 E Ink California, Llc High Molecular Weight Steric Barrier for Electrophoretic Particles
US20150185509A1 (en) 2014-01-02 2015-07-02 E Ink California, Llc Method for improving image stability of electrophoretic fluid
US20150218384A1 (en) 2014-02-06 2015-08-06 E Ink Corporation Electrophoretic particles and processes for the production thereof
US20150241754A1 (en) 2014-02-24 2015-08-27 E Ink California, Llc Electrophoretic display
US20150248045A1 (en) 2012-03-21 2015-09-03 E Ink California, Llc Electrophoretic dispersion
US20150277160A1 (en) 2014-03-25 2015-10-01 E Ink California, Llc Magnetophoretic display assembly and driving scheme
US20150301425A1 (en) 2011-02-03 2015-10-22 E Ink California, Llc Electrophoretic fluid
US20150378236A1 (en) 2013-03-29 2015-12-31 E Ink California, Llc Electrophoretic display device
US20160012710A1 (en) 2014-07-10 2016-01-14 Sipix Technology Inc. Smart medication device
US20160085132A1 (en) 2014-09-10 2016-03-24 E Ink Corporation Colored electrophoretic displays
US9341915B2 (en) 2012-01-09 2016-05-17 E Ink California, Llc Electrophoretic display fluid
US20160139483A1 (en) 2011-09-23 2016-05-19 E Ink California, Llc Additive particles for improving optical performance of an electrophoretic display
US9348193B2 (en) 2012-02-27 2016-05-24 E Ink Corporation Dispersion liquid for electrophoretic display, display medium, and display device
US9361836B1 (en) 2013-12-20 2016-06-07 E Ink Corporation Aggregate particles for use in electrophoretic color displays
US9366935B2 (en) 2011-02-03 2016-06-14 E Ink California, Llc Electrophoretic fluid
US20160170106A1 (en) 2009-08-18 2016-06-16 E Ink California, Llc Color tuning for electrophoretic display device
US9372380B2 (en) 2011-02-03 2016-06-21 E Ink California, Llc Electrophoretic fluid
US9382427B2 (en) 2011-06-09 2016-07-05 E Ink California, Llc Silane-containing pigment particles for electrophoretic display
US9423666B2 (en) 2011-09-23 2016-08-23 E Ink California, Llc Additive for improving optical performance of an electrophoretic display
US10824042B1 (en) * 2017-10-27 2020-11-03 E Ink Corporation Electro-optic display and composite materials having low thermal sensitivity for use therein
US11754903B1 (en) * 2018-11-16 2023-09-12 E Ink Corporation Electro-optic assemblies and materials for use therein

Patent Citations (201)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418346A (en) 1981-05-20 1983-11-29 Batchelder J Samuel Method and apparatus for providing a dielectrophoretic display of visual information
US5872552A (en) 1994-12-28 1999-02-16 International Business Machines Corporation Electrophoretic display
US6137467A (en) 1995-01-03 2000-10-24 Xerox Corporation Optically sensitive electric paper
US8593718B2 (en) 1995-07-20 2013-11-26 E Ink Corporation Electro-osmotic displays and materials for making the same
US6249271B1 (en) 1995-07-20 2001-06-19 E Ink Corporation Retroreflective electrophoretic displays and materials for making the same
US6515649B1 (en) 1995-07-20 2003-02-04 E Ink Corporation Suspended particle displays and materials for making the same
US7304634B2 (en) 1995-07-20 2007-12-04 E Ink Corporation Rear electrode structures for electrophoretic displays
US6017584A (en) 1995-07-20 2000-01-25 E Ink Corporation Multi-color electrophoretic displays and materials for making the same
US7848007B2 (en) 1995-07-20 2010-12-07 E Ink Corporation Electrophoretic medium and process for the production thereof
US7391555B2 (en) 1995-07-20 2008-06-24 E Ink Corporation Non-spherical cavity electrophoretic displays and materials for making the same
US7848006B2 (en) 1995-07-20 2010-12-07 E Ink Corporation Electrophoretic displays with controlled amounts of pigment
US7746544B2 (en) 1995-07-20 2010-06-29 E Ink Corporation Electro-osmotic displays and materials for making the same
US6120839A (en) 1995-07-20 2000-09-19 E Ink Corporation Electro-osmotic displays and materials for making the same
US20140078573A1 (en) 1995-07-20 2014-03-20 E Ink Corporation Electro-osmotic displays and materials for making the same
US8305341B2 (en) 1995-07-20 2012-11-06 E Ink Corporation Dielectrophoretic displays
US6459418B1 (en) 1995-07-20 2002-10-01 E Ink Corporation Displays combining active and non-active inks
US6727881B1 (en) 1995-07-20 2004-04-27 E Ink Corporation Encapsulated electrophoretic displays and methods and materials for making the same
US7411719B2 (en) 1995-07-20 2008-08-12 E Ink Corporation Electrophoretic medium and process for the production thereof
US7071913B2 (en) 1995-07-20 2006-07-04 E Ink Corporation Retroreflective electrophoretic displays and materials for making the same
US6262706B1 (en) 1995-07-20 2001-07-17 E Ink Corporation Retroreflective electrophoretic displays and materials for making the same
US7109968B2 (en) 1995-07-20 2006-09-19 E Ink Corporation Non-spherical cavity electrophoretic displays and methods and materials for making the same
US5760761A (en) 1995-12-15 1998-06-02 Xerox Corporation Highlight color twisting ball display
US5808783A (en) 1996-06-27 1998-09-15 Xerox Corporation High reflectance gyricon display
US6055091A (en) 1996-06-27 2000-04-25 Xerox Corporation Twisting-cylinder display
US6652075B2 (en) 1996-07-19 2003-11-25 E Ink Corporation Electronically addressable microencapsulated ink and display thereof
US6721083B2 (en) 1996-07-19 2004-04-13 E Ink Corporation Electrophoretic displays using nanoparticles
US6120588A (en) 1996-07-19 2000-09-19 E Ink Corporation Electronically addressable microencapsulated ink and display thereof
US20110286081A1 (en) 1996-07-19 2011-11-24 E Ink Corporation Electronically addressable microencapsulated ink and display thereof
US6323989B1 (en) 1996-07-19 2001-11-27 E Ink Corporation Electrophoretic displays using nanoparticles
US8035886B2 (en) 1996-07-19 2011-10-11 E Ink Corporation Electronically addressable microencapsulated ink and display thereof
US6538801B2 (en) 1996-07-19 2003-03-25 E Ink Corporation Electrophoretic displays using nanoparticles
US5930026A (en) 1996-10-25 1999-07-27 Massachusetts Institute Of Technology Nonemissive displays and piezoelectric power supplies therefor
US5777782A (en) 1996-12-24 1998-07-07 Xerox Corporation Auxiliary optics for a twisting ball display
US6301038B1 (en) 1997-02-06 2001-10-09 University College Dublin Electrochromic system
US5961804A (en) 1997-03-18 1999-10-05 Massachusetts Institute Of Technology Microencapsulated electrophoretic display
US6067185A (en) 1997-08-28 2000-05-23 E Ink Corporation Process for creating an encapsulated electrophoretic display
US7247379B2 (en) 1997-08-28 2007-07-24 E Ink Corporation Electrophoretic particles, and processes for the production thereof
US6392785B1 (en) 1997-08-28 2002-05-21 E Ink Corporation Non-spherical cavity electrophoretic displays and materials for making the same
US6300932B1 (en) 1997-08-28 2001-10-09 E Ink Corporation Electrophoretic displays with luminescent particles and materials for making the same
US7002728B2 (en) 1997-08-28 2006-02-21 E Ink Corporation Electrophoretic particles, and processes for the production thereof
US7242513B2 (en) 1997-08-28 2007-07-10 E Ink Corporation Encapsulated electrophoretic displays having a monolayer of capsules and materials and methods for making the same
US6839158B2 (en) 1997-08-28 2005-01-04 E Ink Corporation Encapsulated electrophoretic displays having a monolayer of capsules and materials and methods for making the same
US6054071A (en) 1998-01-28 2000-04-25 Xerox Corporation Poled electrets for gyricon-based electric-paper displays
US7075502B1 (en) 1998-04-10 2006-07-11 E Ink Corporation Full color reflective display with multichromatic sub-pixels
US6130774A (en) 1998-04-27 2000-10-10 E Ink Corporation Shutter mode microencapsulated electrophoretic display
US6172798B1 (en) 1998-04-27 2001-01-09 E Ink Corporation Shutter mode microencapsulated electrophoretic display
US6241921B1 (en) 1998-05-15 2001-06-05 Massachusetts Institute Of Technology Heterogeneous display elements and methods for their fabrication
US6866760B2 (en) 1998-08-27 2005-03-15 E Ink Corporation Electrophoretic medium and process for the production thereof
US6144361A (en) 1998-09-16 2000-11-07 International Business Machines Corporation Transmissive electrophoretic display with vertical electrodes
US6184856B1 (en) 1998-09-16 2001-02-06 International Business Machines Corporation Transmissive electrophoretic display with laterally adjacent color cells
US6225971B1 (en) 1998-09-16 2001-05-01 International Business Machines Corporation Reflective electrophoretic display with laterally adjacent color cells using an absorbing panel
US6271823B1 (en) 1998-09-16 2001-08-07 International Business Machines Corporation Reflective electrophoretic display with laterally adjacent color cells using a reflective panel
US6262833B1 (en) 1998-10-07 2001-07-17 E Ink Corporation Capsules for electrophoretic displays and methods for making the same
US6128124A (en) 1998-10-16 2000-10-03 Xerox Corporation Additive color electric paper without registration or alignment of individual elements
US6147791A (en) 1998-11-25 2000-11-14 Xerox Corporation Gyricon displays utilizing rotating elements and magnetic latching
US6097531A (en) 1998-11-25 2000-08-01 Xerox Corporation Method of making uniformly magnetized elements for a gyricon display
US6327072B1 (en) 1999-04-06 2001-12-04 E Ink Corporation Microcell electrophoretic displays
US6377387B1 (en) 1999-04-06 2002-04-23 E Ink Corporation Methods for producing droplets for use in capsule-based electrophoretic displays
US7012600B2 (en) 1999-04-30 2006-03-14 E Ink Corporation Methods for driving bistable electro-optic displays, and apparatus for use therein
US6693620B1 (en) 1999-05-03 2004-02-17 E Ink Corporation Threshold addressing of electrophoretic displays
US8115729B2 (en) 1999-05-03 2012-02-14 E Ink Corporation Electrophoretic display element with filler particles
US8009348B2 (en) 1999-05-03 2011-08-30 E Ink Corporation Machine-readable displays
US7038655B2 (en) 1999-05-03 2006-05-02 E Ink Corporation Electrophoretic ink composed of particles with field dependent mobilities
US6392786B1 (en) 1999-07-01 2002-05-21 E Ink Corporation Electrophoretic medium provided with spacers
US6870657B1 (en) 1999-10-11 2005-03-22 University College Dublin Electrochromic device
US20070268567A1 (en) 2000-03-03 2007-11-22 Jerry Chung Electro-magnetophoresis display
US7142351B2 (en) 2000-03-03 2006-11-28 Sipix Imaging, Inc. Electro-magnetophoresis display
US7576904B2 (en) 2000-03-03 2009-08-18 Sipix Imaging, Inc. Electro-magnetophoresis display
US7236290B1 (en) 2000-07-25 2007-06-26 E Ink Corporation Electrophoretic medium with improved stability
US7312784B2 (en) 2001-03-13 2007-12-25 E Ink Corporation Apparatus for displaying drawings
US7079305B2 (en) 2001-03-19 2006-07-18 E Ink Corporation Electrophoretic medium and process for the production thereof
US7679814B2 (en) 2001-04-02 2010-03-16 E Ink Corporation Materials for use in electrophoretic displays
US7170670B2 (en) 2001-04-02 2007-01-30 E Ink Corporation Electrophoretic medium and display with improved image stability
US8390918B2 (en) 2001-04-02 2013-03-05 E Ink Corporation Electrophoretic displays with controlled amounts of pigment
US6580545B2 (en) 2001-04-19 2003-06-17 E Ink Corporation Electrochromic-nanoparticle displays
US7180649B2 (en) 2001-04-19 2007-02-20 E Ink Corporation Electrochromic-nanoparticle displays
US6870661B2 (en) 2001-05-15 2005-03-22 E Ink Corporation Electrophoretic displays containing magnetic particles
US8582196B2 (en) 2001-05-15 2013-11-12 E Ink Corporation Electrophoretic particles and processes for the production thereof
US9158174B2 (en) 2001-05-15 2015-10-13 E Ink Corporation Electrophoretic particles and processes for the production thereof
US7375875B2 (en) 2001-05-15 2008-05-20 E Ink Corporation Electrophoretic media and processes for the production thereof
US7230750B2 (en) 2001-05-15 2007-06-12 E Ink Corporation Electrophoretic media and processes for the production thereof
US7532388B2 (en) 2001-05-15 2009-05-12 E Ink Corporation Electrophoretic media and processes for the production thereof
US6822782B2 (en) 2001-05-15 2004-11-23 E Ink Corporation Electrophoretic particles and processes for the production thereof
US20090206499A1 (en) 2001-05-15 2009-08-20 E Ink Corporation Electrophoretic media and processes for the production thereof
US7411720B2 (en) 2001-05-15 2008-08-12 E Ink Corporation Electrophoretic particles and processes for the production thereof
US20090009852A1 (en) 2001-05-15 2009-01-08 E Ink Corporation Electrophoretic particles and processes for the production thereof
US20100148385A1 (en) 2001-05-15 2010-06-17 E Ink Corporation Electrophoretic media and processes for the production thereof
US7535624B2 (en) 2001-07-09 2009-05-19 E Ink Corporation Electro-optic display and materials for use therein
US20030048522A1 (en) 2001-09-13 2003-03-13 Rong-Chang Liang Three-dimensional electrophoretic displays
US8361620B2 (en) 2002-01-03 2013-01-29 Sipix Imaging, Inc. Functionalized halogenated polymers for microencapsulation
US20030164480A1 (en) 2002-01-03 2003-09-04 Wu Zarng-Arh George Novel electrophoretic dispersion with a fluorinated solvent and a charge controlling agent
US7110162B2 (en) 2002-01-03 2006-09-19 Sipix Imaging, Inc. Electrophoretic dispersion with a fluorinated solvent and a charge controlling agent
US20030169227A1 (en) 2002-01-03 2003-09-11 Wu Zarng-Arh George Novel electrophoretic dispersion with a fluorinated solvent and a charge controlling agent
US7052766B2 (en) 2002-01-03 2006-05-30 Sipix Imaging, Inc. Functionalized halogenated polymers for microencapsulation
US20030151029A1 (en) 2002-02-11 2003-08-14 Hsu Wan Peter Core-shell particles for electrophoretic display
US20060132896A1 (en) 2002-02-11 2006-06-22 Hsu Wan P Core-shell particles for electrophoretic display
US7382514B2 (en) 2002-02-11 2008-06-03 Sipix Imaging, Inc. Core-shell particles for electrophoretic display
US7321459B2 (en) 2002-03-06 2008-01-22 Bridgestone Corporation Image display device and method
US6950220B2 (en) 2002-03-18 2005-09-27 E Ink Corporation Electro-optic displays, and methods for driving same
US7113323B2 (en) 2002-03-21 2006-09-26 Sipix Imaging, Inc. Magnetophoretic and electromagnetophoretic displays
US6927892B2 (en) 2002-03-21 2005-08-09 Sipix Imaging Inc. Magnetophoretic and electromagnetophoretic displays
US7580180B2 (en) 2002-03-21 2009-08-25 Sipix Imaging, Inc. Magnetophoretic and electromagnetophoretic displays
US9114663B2 (en) 2002-03-21 2015-08-25 E Ink California, Llc Magnetophoretic and electromagnetophoretic displays
US20030197916A1 (en) 2002-04-23 2003-10-23 Jerry Chung Electro-magnetophoresis display
US7116318B2 (en) 2002-04-24 2006-10-03 E Ink Corporation Backplanes for display applications, and components for use therein
US20040030125A1 (en) 2002-05-17 2004-02-12 Ying-Syi Li Novel Fluorinated silicon (IV) phthalocyanines and naphthalocyanines for electrophoretic, magnetophoretic or electromagnetophoretic display
US7532389B2 (en) 2002-05-17 2009-05-12 Sipix Imaging, Inc. Fluorinated silicon phthalocyanines and naphthalocyanines for electrophoretic display
US6958848B2 (en) 2002-05-23 2005-10-25 E Ink Corporation Capsules, materials for use therein and electrophoretic media and displays containing such capsules
US7061663B2 (en) 2002-05-23 2006-06-13 E Ink Corporation Capsules, materials for use therein and electrophoretic media and displays containing such capsules
US7202991B2 (en) 2002-05-23 2007-04-10 E Ink Corporation Capsules, materials for use therein and electrophoretic media and displays containing such capsules
US7110164B2 (en) 2002-06-10 2006-09-19 E Ink Corporation Electro-optic displays, and processes for the production thereof
US6982178B2 (en) 2002-06-10 2006-01-03 E Ink Corporation Components and methods for use in electro-optic displays
US7286279B2 (en) 2002-07-30 2007-10-23 Sipix Imaging, Inc. Microencapsulation processes and compositions for electrophoretic displays
US20140078024A1 (en) 2002-08-06 2014-03-20 E Ink Corporation Protection of electro-optic displays against thermal effects
US7312916B2 (en) 2002-08-07 2007-12-25 E Ink Corporation Electrophoretic media containing specularly reflective particles
US8129655B2 (en) 2002-09-03 2012-03-06 E Ink Corporation Electrophoretic medium with gaseous suspending fluid
US20090225398A1 (en) 2002-09-03 2009-09-10 E Ink Corporation Electro-optic displays
US20140347718A1 (en) 2002-09-03 2014-11-27 E Ink Corporation Electro-optic displays
US7839564B2 (en) 2002-09-03 2010-11-23 E Ink Corporation Components and methods for use in electro-optic displays
US7561324B2 (en) 2002-09-03 2009-07-14 E Ink Corporation Electro-optic displays
US6958849B2 (en) 2002-09-18 2005-10-25 Sipix Imaging Inc. Electrophoretic display with improved temperature latitude and switching performance
US7226550B2 (en) 2002-10-10 2007-06-05 Sipix Imaging, Inc. Electrophoretic dispersions
US7767112B2 (en) 2002-10-10 2010-08-03 Sipix Imaging, Inc. Method for inducing or enhancing the threshold voltage of an electrophoretic display
US7141688B2 (en) 2002-10-15 2006-11-28 Sipix Imaging, Inc. Fluorinated dye stabilizers in fluorinated dielectric solvent
US20150177589A1 (en) 2002-10-16 2015-06-25 E Ink Corporation Electrophoretic displays
US6922276B2 (en) 2002-12-23 2005-07-26 E Ink Corporation Flexible electro-optic displays
US6831771B2 (en) 2003-01-08 2004-12-14 Sipix Imaging Inc. Electronic whiteboard using electrophoretic display
US7184197B2 (en) 2003-01-30 2007-02-27 Sipix Imaging, Inc. High performance capsules for electrophoretic displays
US7955532B2 (en) 2003-01-30 2011-06-07 Sipix Imaging, Inc. High performance capsules for electrophoretic displays
US6987603B2 (en) 2003-01-31 2006-01-17 E Ink Corporation Construction of electrophoretic displays
US6956690B2 (en) 2003-02-06 2005-10-18 Sipix Imaging, Inc. Electrophoretic display with a bi-modal particle system
US7910175B2 (en) 2003-03-25 2011-03-22 E Ink Corporation Processes for the production of electrophoretic displays
US7339715B2 (en) 2003-03-25 2008-03-04 E Ink Corporation Processes for the production of electrophoretic displays
US7012735B2 (en) 2003-03-27 2006-03-14 E Ink Corporaiton Electro-optic assemblies, and materials for use therein
US7236291B2 (en) 2003-04-02 2007-06-26 Bridgestone Corporation Particle use for image display media, image display panel using the particles, and image display device
US20050012980A1 (en) 2003-05-02 2005-01-20 E Ink Corporation Electrophoretic displays with controlled amounts of pigment
US20060281924A1 (en) 2003-08-08 2006-12-14 Jin Yang Fluorinated dyes or colorants and their uses
US7473782B2 (en) 2003-08-08 2009-01-06 Sipix Imaging, Inc. Fluorinated dyes or colorants and their uses
US7951938B2 (en) 2003-08-08 2011-05-31 Sipix Imaging, Inc. Fluorinated dyes or colorants and their uses
US7390901B2 (en) 2003-08-08 2008-06-24 Sipix Imaging, Inc. Fluorinated dyes or colorants and their uses
US7420549B2 (en) 2003-10-08 2008-09-02 E Ink Corporation Electro-wetting displays
US20050136347A1 (en) 2003-11-04 2005-06-23 Haiyan Gu Electrophoretic dispersions
US7277218B2 (en) 2003-11-04 2007-10-02 Sipix Imaging, Inc. Electrophoretic compositions
US8257614B2 (en) 2003-11-04 2012-09-04 Sipix Imaging, Inc. Electrophoretic dispersions
US7572394B2 (en) 2003-11-04 2009-08-11 Sipix Imaging, Inc. Electrophoretic dispersions
US7173752B2 (en) 2003-11-05 2007-02-06 E Ink Corporation Electro-optic displays, and materials for use therein
US20050156340A1 (en) 2004-01-20 2005-07-21 E Ink Corporation Preparation of capsules
US9005494B2 (en) 2004-01-20 2015-04-14 E Ink Corporation Preparation of capsules
US20080130092A1 (en) 2004-03-23 2008-06-05 E Ink Corporation Light modulators
US7453445B2 (en) 2004-08-13 2008-11-18 E Ink Corproation Methods for driving electro-optic displays
US7230751B2 (en) 2005-01-26 2007-06-12 E Ink Corporation Electrophoretic displays using gaseous fluids
US20070091417A1 (en) 2005-10-25 2007-04-26 E Ink Corporation Electrophoretic media and displays with improved binder
US7952790B2 (en) 2006-03-22 2011-05-31 E Ink Corporation Electro-optic media produced using ink jet printing
US7903319B2 (en) 2006-07-11 2011-03-08 E Ink Corporation Electrophoretic medium and display with improved image stability
US8018640B2 (en) 2006-07-13 2011-09-13 E Ink Corporation Particles for use in electrophoretic displays
US8199395B2 (en) 2006-07-13 2012-06-12 E Ink Corporation Particles for use in electrophoretic displays
US20150005720A1 (en) 2006-07-18 2015-01-01 E Ink California, Llc Electrophoretic display
US7477444B2 (en) 2006-09-22 2009-01-13 E Ink Corporation & Air Products And Chemical, Inc. Electro-optic display and materials for use therein
US20160377952A1 (en) * 2007-11-14 2016-12-29 E Ink Corporation Electro-optic assemblies, and adhesives and binders for use therein
US20090122389A1 (en) 2007-11-14 2009-05-14 E Ink Corporation Electro-optic assemblies, and adhesives and binders for use therein
US8270064B2 (en) 2009-02-09 2012-09-18 E Ink Corporation Electrophoretic particles, and processes for the production thereof
US20160170106A1 (en) 2009-08-18 2016-06-16 E Ink California, Llc Color tuning for electrophoretic display device
US8654436B1 (en) 2009-10-30 2014-02-18 E Ink Corporation Particles for use in electrophoretic displays
US20110217639A1 (en) 2010-03-02 2011-09-08 Sprague Robert A Electrophoretic display fluid
US20140078576A1 (en) 2010-03-02 2014-03-20 Sipix Imaging, Inc. Electrophoretic display device
US8446664B2 (en) 2010-04-02 2013-05-21 E Ink Corporation Electrophoretic media, and materials for use therein
US8363306B2 (en) 2010-04-05 2013-01-29 Sipix Imaging, Inc. Pigment particles for electrophoretic display
US20120049125A1 (en) 2010-08-24 2012-03-01 Hui Du Electrophoretic dispersion
US20120112131A1 (en) 2010-11-05 2012-05-10 Yu Li Electrophoretic dispersion
US20150301425A1 (en) 2011-02-03 2015-10-22 E Ink California, Llc Electrophoretic fluid
US20140011913A1 (en) 2011-02-03 2014-01-09 Sipix Imaging, Inc. Electrophoretic fluid
US9372380B2 (en) 2011-02-03 2016-06-21 E Ink California, Llc Electrophoretic fluid
US9366935B2 (en) 2011-02-03 2016-06-14 E Ink California, Llc Electrophoretic fluid
US8961831B2 (en) 2011-05-31 2015-02-24 E Ink California, Llc Silane-containing pigment particles for electrophoretic display
US9382427B2 (en) 2011-06-09 2016-07-05 E Ink California, Llc Silane-containing pigment particles for electrophoretic display
US9423666B2 (en) 2011-09-23 2016-08-23 E Ink California, Llc Additive for improving optical performance of an electrophoretic display
US20160139483A1 (en) 2011-09-23 2016-05-19 E Ink California, Llc Additive particles for improving optical performance of an electrophoretic display
US8902491B2 (en) 2011-09-23 2014-12-02 E Ink California, Llc Additive for improving optical performance of an electrophoretic display
US20150177590A1 (en) 2011-12-27 2015-06-25 E Ink California, Llc High Molecular Weight Steric Barrier for Electrophoretic Particles
US20130161565A1 (en) 2011-12-27 2013-06-27 Peter B. Laxton High Molecular Weight Steric Barrier for Electrophoretic Particles
US9341915B2 (en) 2012-01-09 2016-05-17 E Ink California, Llc Electrophoretic display fluid
US20130193385A1 (en) 2012-01-27 2013-08-01 Yu Li Electrophoretic dispersion
US20140339481A1 (en) 2012-01-27 2014-11-20 E Ink California, Llc Electrophoretic dispersion
US9348193B2 (en) 2012-02-27 2016-05-24 E Ink Corporation Dispersion liquid for electrophoretic display, display medium, and display device
US20130244149A1 (en) 2012-03-14 2013-09-19 Ming Wang Charged pigment particles for electrophoretic display
US20150248045A1 (en) 2012-03-21 2015-09-03 E Ink California, Llc Electrophoretic dispersion
US9052564B2 (en) 2012-03-21 2015-06-09 E Ink California, Llc Electrophoretic dispersion
US20140078857A1 (en) 2012-09-20 2014-03-20 Fit Systems, Llc Apparatus for mixing measured amounts of concentrate with a dilutant and method of using same
US20140104674A1 (en) 2012-10-15 2014-04-17 Sipix Technology Inc. Display medium and manufacturing method thereof and electrophoretic display therewith
US20150015932A1 (en) 2013-01-10 2015-01-15 E Ink Corporation Electro-optic display with controlled electrochemical reactions
US20140231728A1 (en) 2013-02-15 2014-08-21 Sipix Imaging, Inc. Electrophoretic fluid
US20150378236A1 (en) 2013-03-29 2015-12-31 E Ink California, Llc Electrophoretic display device
US9361836B1 (en) 2013-12-20 2016-06-07 E Ink Corporation Aggregate particles for use in electrophoretic color displays
US20150185509A1 (en) 2014-01-02 2015-07-02 E Ink California, Llc Method for improving image stability of electrophoretic fluid
US20150218384A1 (en) 2014-02-06 2015-08-06 E Ink Corporation Electrophoretic particles and processes for the production thereof
US20150241754A1 (en) 2014-02-24 2015-08-27 E Ink California, Llc Electrophoretic display
US20150277160A1 (en) 2014-03-25 2015-10-01 E Ink California, Llc Magnetophoretic display assembly and driving scheme
US20160012710A1 (en) 2014-07-10 2016-01-14 Sipix Technology Inc. Smart medication device
US20160085132A1 (en) 2014-09-10 2016-03-24 E Ink Corporation Colored electrophoretic displays
US10824042B1 (en) * 2017-10-27 2020-11-03 E Ink Corporation Electro-optic display and composite materials having low thermal sensitivity for use therein
US11754903B1 (en) * 2018-11-16 2023-09-12 E Ink Corporation Electro-optic assemblies and materials for use therein

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
BACH, U ET AL., ADV. MATER, vol. 14, no. 11, 2002, pages 845
HAYES, R.A. ET AL.: "Video-Speed Electronic Paper Based on Electrowetting", NATURE, vol. 425, 2003, pages 383 - 385, XP002286158, DOI: 10.1038/nature01988
KITAMURA, T ET AL.: "Electrical toner movement for electronic paper-like display", IDW, 2001
O'REGAN, B ET AL., NATURE, vol. 353, 1991, pages 737
WOOD, D, INFORMATION DISPLAY, vol. 18, no. 3, March 2002 (2002-03-01), pages 24
YAMAGUCHI, Y ET AL.: "Toner display using insulative particles charged triboelectrically", IDW, 2001

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