E Ink Corporation

Xerox Corporation

Cabot Corporation

Betz Laboratories, Inc.

Owen Research Corporation

Xerox Corporatoin

Ian D Morrison

Joseph M Jacobson

Paul Stephen Drzaic

Jonathan D Albert

Andrew L Loxley

Robert David Feeney

Libing Zhang

Barrett Comiskey

Bing R Hsieh

Russell J Wilcox

Barrett O Comiskey

Anthony Edward Pullen

Robert Waverly Zehner

Gregg Michael Duthaler

Jianna Wang

Steven E Brown

Richard J Paolini, Jr

Guy Danner

Holly G Gates

Steven R Reznek

Larry W Becker

Philip S Davis

John Edward Cronin

Karl Raymond Amundson

Edward F Grabowski

James R Larson

Charles Howie Honeyman

Ara N Knaian

Craig A Herb

Leon A Teuscher

Steven J O'Neil

John F Oliver

Jonathan L Zalesky

Anthony M Wallace

P Keith Watson

Justin J Abramson

Jerry H Taylor

Emily J Pratt

Caprice L Gray

Edward Anczurowski

David Allen Mantell

Thomas Henry Whitesides

Peter T Kazlas

Arthur J Epstein

Milan Stolka

Melvin D Croucher

Kurt B Gundlach

Martin C Green

William M Schwarz

Meng-Jiao Wang

Michael D McCreary

Agathagelos Kyrlidis

Benjamin M Davis

Min-Hong Fu

Eugene N Step

Dale R Ims

Joseph J Wysocki

Paul Windsor Morehouse, Jr

Andrew R Melnyk

Anne K Shim

Christine J Tarnawskyj

Michael P O'Horo

Robert F Dunham

William L Sifleet

Lang H Nguyen

Jian Cai

Joe C Steelhammer

Peter J Valianatos

Lawrence S Wittenbrook

Eva A Wildi

Bing R Hseih

Lawrence J Murphy

Charles A Gray

Frank Y Pan

Rachael A Forgit

Owen W Ozier

Merle Emil Scharfe

The ink of the present invention is an oil dispersion of pigment particles. The pigment particles are designed to have no or insignificant response to applied electric fields. The ink comprises a carrier liquid having a concentration of pigment particles disposed in the carrier liquid. A surfactant is included in the carrier liquid, wherein the surfactant is adsorbed on the pigment particles only when activated. The pigment particles having adsorbed the surfactant do not generate a reactive level of particle charge so that the pigment particles move with and not independently from the carrier liquid under an applied electrical field. The surfactant is activated by the application of at least one of heat and solvent to the carrier liquid so that the surfactant molecules adsorb onto the pigment particles.

Electronic display ink having inert pigment particles

A method for manufacturing a full color, reflective display includes the steps of depositing a first plurality of electrophoretic display elements in substantial registration with a first electrode and a second plurality of electrophoretic display elements in substantial registration with a second electrode. The electrophoretic display elements include a capsule containing a species of particles dispersed in a suspending fluid. The selective deposition of the display elements can be achieved by ink-jet printing methods, screen printing methods or other printing methods. In some embodiments the electrodes are printed onto the substrate before selective deposition of the display elements, while in other embodiments the substrate is provided having the electrodes already disposed on it. In still other embodiments, the sequence of printing of electrodes and electrophoretic display elements can be varied.

Methods for achieving improved color in microencapsulated electrophoretic devices

Novel addressing schemes for controlling electronically addressable displays include a scheme for rear-addressing displays, which allows for in-plane switching of the display material. Other schemes include a rear-addressing scheme which uses a retroreflecting surface to enable greater viewing angle and contrast. Another scheme includes an electrode structure that facilitates manufacture and control of a color display. Another electrode structure facilitates addressing a display using an electrostatic stylus. Methods of using the disclosed electrode structures are also disclosed. Another scheme includes devices combining display materials with silicon transistor addressing structures.

Multi-color electrophoretic displays and materials for making the same

The present invention relates to dispersions comprising particulate materials and a solvent, with an optional dispersant. The solvent has a low dielectric constant, and the particulate material is present at high loading levels. The resulting dispersion has been found to be stable and have a low viscosity, even at high particulate material loadings. Various uses for these dispersions are also disclosed.

Low viscosity, high particulate loading dispersions

The invention relates to electro-optic displays and methods for driving such displays. The invention provides (i) electrochromic displays with solid charge transport layers; (ii) apparatus and methods for improving the contrast and reducing the cost of electrochromic displays; (iii) apparatus and methods for sealing electrochromic displays from the outside environment and preventing ingress of contaminants into such a display; and (iv) methods for adjusting the driving of electro-optic displays to allow for environmental and operating parameters.

Electro-optic displays, and methods for driving same

The present invention relates to a method of providing product consistency of a particulate material or the product containing the same, by measuring and/or analyzing at least one interfacial potential property value of the particulate material. The method may be used as a QA/QC method to insure product consistency.

Methods of providing product consistency

The present invention relates to a method of selecting and/or developing particulate material for a composition comprising the particulate material and a matrix by using at least one homogeneous interaction parameter alone or in combination with at least one heterogeneous interaction parameter. These parameters may comprise at least one interfacial potential property value, at least one value derived from an interfacial potential property value, at least one component of an interfacial potential property value, or combinations thereof for a particulate material and for the matrix. Process and performance maps, as well as methods for mapping, are also disclosed.

Methods of selecting and developing a particulate material

The present invention relates to a method of specifying a batch, lot, or shipment of particulate material by using at least one interfacial potential property value to specify the batch, lot, or shipment of particulate material. A method of representing a grade, brand, or type of particulate material is also disclosed. At least one morphological value and/or chemical value may also be included. The values can be included on a product specification sheet.

Methods of specifying or identifying particulate material

A display comprises spaced first and second electrodes, and a plurality of electrochromic nanoparticles disposed between the electrodes, each of the nanoparticles having an electron-rich state and an electron-depleted state, the two states differing in at least one optical characteristic. Upon injection of charge from one of the electrodes, the nanoparticles switch between their electron-rich and electron-depleted states, thus changing an optical characteristic of the display.

Electrochromic-nanoparticle displays

Disclosed herein are novel electrophoretic displays and materials useful in fabricating such displays. In particular, novel encapsulated displays are disclosed. Particles encapsulated therein are dispersed within a suspending, or electrophoretic, fluid. This fluid may be a mixture of two or more fluids or may be a single fluid. The displays may further comprise particles dispersed in a suspending fluid, wherein the particles contain a liquid. In either case, the suspending fluid may have a density or refractive index substantially matched to that of the particles dispersed therein. Finally, also disclosed herein are electro-osmotic displays. These displays comprise at least one capsule containing either a cellulosic or gel-like internal phase and a liquid phase, or containing two or more immiscible fluids. Application of electric fields to any of the electrophoretic displays described herein affects an optical property of the display.

Retroreflective electrophoretic displays and materials for making the same

Methods to predict the rheological properties of composition comprising a filler in a matrix are described. The present invention further involves determining the difference between the work of cohesion and the work of ahhesion for a filler and a matrix in order to quantitatively predict the rheological properties of the system, such as yield point. The ability to predict such properties has numerous advantages. The present invention further relates to a rheological master curve and a method to produce the curve which permits one to predict a rheological property of a composition comprising a filler in a matrix based on the particular polymer used and the particular filler used. Also disclosed is a method of method of choosing a filler to achieve a desired rheological property using the rheological master curve described herein.

Methods to control and/or predict rheological properties

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Acton, MA, United States of America

Ian D Morrison