Multi-stable electronic inks

Patent metadata

Field	Value
Publication number	US-9298058-B2
Application number	US-201214373363-A
Country	US
Kind code	B2
Filing date	Jan 24, 2012
Priority date	Jan 24, 2012
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A compound is disclosed. The compound has the general structure:

wherein Y is selected from the group consisting of hydrocarbons, hydrocarbons including nitrogen in the carbon backbone, and hydrocarbons including oxygen in the carbon backbone; wherein R 1 and R 2 are each independently selected from the group consisting of hydrogen, linear hydrocarbons, branched hydrocarbons, and cyclic hydrocarbons and wherein R 1 and R 2 are not both hydrogen; wherein X is selected from the group consisting of CH 2 , O, N—R 3 , S, and nothing and wherein R 3 is selected from the group consisting of hydrogen, branched hydrocarbons, linear hydrocarbons, and cyclic hydrocarbons; wherein m is an integer between 1 and 50, inclusive; wherein n is an integer between 1 and 10,000, inclusive; and wherein p, q, and z are each independently an integer greater than 0.

First claim

What is claimed is:

1. A compound having the general structure:

wherein Y is selected from the group consisting of hydrocarbons, hydrocarbons including nitrogen in the carbon backbone, and hydrocarbons including oxygen in the carbon backbone; wherein R 1 and R 2 are each independently selected from the group consisting of hydrogen, linear hydrocarbons, branched hydrocarbons, and cyclic hydrocarbons and wherein R 1 and R 2 are not both hydrogen; wherein m is an integer between 1 and 50, inclusive; and wherein n is an integer between 1 and 10,000, inclusive; or the general structure:

wherein Y is selected from the group consisting of hydrocarbons, hydrocarbons including nitrogen in the carbon backbone, and hydrocarbons including oxygen in the carbon backbone; wherein X is selected from the group consisting of CH 2 , O, N—R 3 , S, and nothing, wherein R 3 is selected from the group consisting of hydrogen, branched hydrocarbons, linear hydrocarbons, and cyclic hydrocarbons; wherein m is an integer between 1 and 50, inclusive; wherein n is an integer between 1 and 10,000, inclusive; and wherein p, q, and z are each independently an integer greater than 0.

2. The compound of claim 1 wherein Y is selected from the group consisting of aliphatic amines including between 1 and 50 carbons inclusive, glycols including between 1 and 50 carbons inclusive, alkyls including between 1 and 50 carbons inclusive, alkenyls including between 1 and 50 carbons inclusive, aryls including between 1 and 50 carbons inclusive, arylalkyls including between 1 and 50 carbons inclusive, and cycloalkanealkyls including between 1 and 50 carbons inclusive.

3. The compound of claim 1 wherein one of Y, R 1 , and R 2 may be the same or may be different from another one of Y, R 1 , and R 2 , and wherein m and n may be the same or may be different from one another; or wherein one of m, n, p, q, and z may be the same or may be different from another one of m, n, p, q, and z.

4. An electronic ink including:
a non-polar carrier fluid;
a colorant particle; and
a compound having the general structure:

wherein Y is selected from the group consisting of hydrocarbons, hydrocarbons including nitrogen in the carbon backbone, and hydrocarbons including oxygen in the carbon backbone; wherein R 1 and R 2 are each independently selected from the group consisting of hydrogen, linear hydrocarbons, branched hydrocarbons, and cyclic hydrocarbons and wherein R 1 and R 2 are not both hydrogen; wherein m is an integer between 1 and 50, inclusive; and wherein n is an integer between 1 and 10,000, inclusive; or the general structure:

wherein Y is selected from the group consisting of hydrocarbons, hydrocarbons including nitrogen in the carbon backbone, and hydrocarbons including oxygen in the carbon backbone; wherein X is selected from the group consisting of CH 2 , O, N—R 3 , S, and nothing, wherein R 3 is selected from the group consisting of hydrogen, branched hydrocarbons, linear hydrocarbons, and cyclic hydrocarbons; wherein m is an integer between 1 and 50, inclusive; wherein n is an integer between 1 and 10,000, inclusive; and wherein p, q, and z are each independently an integer greater than 0.

5. The electronic ink of claim 4 wherein Y is selected from the group consisting of aliphatic amines including between 1 and 50 carbons inclusive, glycols including between 1 and 50 carbons inclusive, alkyls including between 1 and 50 carbons inclusive, alkenyls including between 1 and 50 carbons inclusive, aryls including between 1 and 50 carbons inclusive, arylalkyls including between 1 and 50 carbons inclusive, and cycloalkanealkyls including between 1 and 50 carbons inclusive.

6. The electronic ink of claim 4 wherein the non-polar carrier fluid is a non-polar solvent selected from the group consisting of hydrocarbons, halogenated hydrocarbons, partially halogenated hydrocarbons, siloxanes, and combinations thereof.

7. The electronic ink of claim 4 wherein the non-polar carrier fluid is a non-polar solvent selected from the group consisting of perchloroethylene, cyclohexane, dodecane, cyclopentasiloxane, cyclohexasiloxane, cyclooctamethylsiloxane, isoparaffinic fluids, mineral oil, and combinations thereof.

8. The electronic ink of claim 4 wherein the colorant particle is selected from the group consisting of black pigment particles, yellow pigment particles, magenta pigment particles, red pigment particles, violet pigment particles, cyan pigment particles, blue pigment particles, green pigment particles, orange pigment particles, brown pigment particles, and white pigment particles.

9. The electronic ink of claim 4 wherein the colorant particle is a colored polymeric particle having a size ranging from 10 nm to 10 μm.

10. The electronic ink of claim 4 further including a charge director, wherein the charge director is a small molecule or polymer that is capable of forming reverse micelles in the non-polar carrier fluid.

11. In combination, an electronic display and an electronic ink, wherein the electronic display includes:
a first electrode;
a second electrode; and
a display cell having a recess defined by a dielectric material, the first electrode, and the second electrode, the display cell containing the electronic ink wherein the electronic ink includes:
a non-polar carrier fluid;
a colorant particle; and
a compound having the general structure:

wherein Y is selected from the group consisting of hydrocarbons, hydrocarbons including nitrogen in the carbon backbone, and hydrocarbons including oxygen in the carbon backbone; wherein R 1 and R 2 are each independently selected from the group consisting of hydrogen, linear hydrocarbons, branched hydrocarbons, and cyclic hydrocarbons and wherein R 1 and R 2 are not both hydrogen: wherein m is an integer between 0 and 50, inclusive; and wherein n is an integer between 1 and 10,000, inclusive; or the general structure:

wherein Y is selected from the group consisting of hydrocarbons, hydrocarbons including nitrogen in the carbon backbone, and hydrocarbons including oxygen in the carbon backbone; wherein X is selected from the group consisting of CH 2 , O, N—R 3 , S, and nothing, wherein R 3 is selected from the group consisting of hydrogen, branched hydrocarbons, linear hydrocarbons, and cyclic hydrocarbons; wherein m is an integer between 1 and 50, inclusive; wherein n is an integer between 1 and 10,000, inclusive; and wherein p, q, and z are each independently an integer greater than 0.

12. The combination of claim 11 wherein the electronic display includes a plurality of display cells in a stacked configuration, associated first electrodes and second electrodes, and a plurality of electronic inks of different colors, each display cell containing an electronic ink of a different color.

13. The combination of claim 11 wherein the non-polar carrier flu

Assignees

• Zhou Zhang-Lin
• Liu Qin
• Combs Gregg
• Owen James R
• Hewlett Packard Development Co

Inventors

• Zhou Zhang-Lin
• Liu Qin
• Combs Gregg
• Owen James R

Classifications

• C09D11/033

  characterised by the solvent · CPC title

• G03G9/125

  characterised by the liquid · CPC title

• G02F2001/1678

  characterised by the composition or particle type · CPC title

• G02F1/0063

  Optical properties, e.g. absorption, reflection or birefringence (materials for non-linear optics G02F1/355) · CPC title

• C09D11/00

  Inks · CPC title