E Ink California, LLC

Ishihara Chemical Co., Ltd.

Applied Nanotech Holdings, Inc.

Pen Inc.

Peter B Laxton

HongMei Zang

Craig Lin

Ming Wang

Ping-Yueh Cheng

Heng-Che Chen

Jo-Cheng Huang

Hui Du

Yu Li

Robert Arthur Sprague

Zvi Yaniv

Hongmei Zang

Bo-Ru Yang

Mohshi Yang

Yunjun Li

Lei Liu

David Max Roundhill

Xueping Li

Hidetoshi Arimura

The present invention is directed to an electrophoretic display device comprising microcells filled with an electrophoretic fluid and a dielectric layer, which comprises a first type of magnetic filler material, a second type of nonmagnetic filler material, and a polymeric material. The first and second types of filler material physically interact with each other and they are fixed and aligned in the dielectric adhesive layer in a direction perpendicular to a plane of the dielectric layer. The dielectric layer exhibits anisotropic conductivity having higher conductivity in the z direction compared to the other two orthogonal directions.

Anisotropic conductive dielectric layer for electrophoretic display

The present invention is directed to driving methods for a color display device which can display high quality color states. The display device utilizes an electrophoretic fluid which comprises three types of pigment particles having different optical characteristics, and provides for displaying at a viewing surface not only the colors of the three types of particles but also the colors of binary mixtures thereof.

Driving methods to produce a mixed color state for an electrophoretic display

The present invention is directed to driving methods for a color display device which can display high quality color states. The display device utilizes an electrophoretic fluid which comprises three types of pigment particles having different optical characteristics.

Driving methods for color display device

The present invention is directed to an electrophoretic display device comprising an electrophoretic fluid which fluid comprises two type of charged particles dispersed in a solvent, wherein the two types of charged particles are of the same color, but carrying opposite charge polarities.

Electrophoretic display

The present invention is directed to a method for authenticating a package using a magnetophoretic imaging film. It provides a low-cost method for verifying the authenticity of products in a way that is not immediately evident to counterfeiters. A single pre-patterned magnetic image can be used to display images on any number of individual imaging films.

Method for authenticating packages using magnetophoretic imaging films

The present invention is directed to an electrophoretic display device comprising (a) microcells filled with an electrophoretic fluid, and (b) at least one dielectric layer which comprises at least two types of filler. Among the types of filler, at least one type is sensitive to a magnetic field.

The present invention is directed to a magnetophoretic display assembly and a driving scheme for such a display assembly. It provides a low-cost imaging display assembly which is capable of displaying desired re-writeable images. A single driving element can be used to display images on any number of individual imaging films.

Magnetophoretic display assembly and driving scheme

The present invention is directed to an electrophoretic dispersion comprising charged pigment particles, in particular, an electrophoretic dispersion including both uncharged or lightly charged neutral buoyancy particles and uncharged or lightly charged additive particles. The combination improves the performance of an electrophoretic display, in particular the color state stability over time.

Electrophoretic dispersion including charged pigment particles, uncharged additive nanoparticles, and uncharged neutral density particles

The present invention provides a solution for a highlight or multicolor display device, in which each display cell can display high quality color states. More specifically, an electrophoretic fluid is provided which comprises three types of charged particles and a fourth type of particles which is substantially uncharged neutral buoyancy particles, all of which are dispersed in a solvent or solvent mixture.

Color display device

The present invention is directed to an electrophoretic dispersion, in particular, an electrophoretic dispersion comprising uncharged or lightly charged additive particles for improving bistability of an electrophoretic display. The average diameter of the additive particles is about 1% to about 25% of the average hydrodynamic diameter of the charged pigment particles.

Electrophoretic dispersion

The present invention provides a reflective color display device which can display multiple color states, without the disadvantages associated with previously known color display devices. The display fluid of the present invention comprises (a) black and white electrophoretic particles which are oppositely charged and (b) charged color-generating particles having photonic crystal characteristics, all of which are dispersed in a solvent or solvent mixture.

A layer of material having a low thermal conductivity is coated over a substrate. A film of conductive ink is then coated over the layer of material having the low thermal conductivity, and then sintered. The film of conductive ink does not absorb as much energy from the sintering as the film of conductive ink coated over the layer of material having the low thermal conductivity. The layer of material having the low thermal conductivity may be a polymer, such as polyimide.

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Marshfield, MA, United States of America

Peter B Laxton