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US6067185A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for creating an encapsulated electrophoretic display

Assignee: E Ink Corp
•
Filing: 1998-08-27
•
Granted: 2000-05-23
•
Expires: 2018-08-27
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Abstract

Abstract 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.

Inventors

  • 👤 Jonathan D. Albert
  • 👤 Barrett Comiskey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 17:27
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/372; B; B41; B41J; B41J3/00; B41J3/407; B41J3/4076; G02; G02B; G02B26/00; G02B26/02; G02B26/026; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/1345; G02F1/135; G02F1/165; G02F1/166; G02F1/167; G02F1/1675; G02F1/16757; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/077; G06K19/07701; G06K19/07703; G09F9/302; H; H10; H10K; H10K10/00; H10K10/40; H10K10/46; G02F1/133305; G02F1/133348; G02F1/13336; G02F1/1334; G02F2202/00; G02F2202/12; G02F2202/28; H10K10/462; H10K85/00; H10K85/30; H10K85/60

Claims Analysis

Total Claims: 17
Claim 1
Independent Claim 47 words
A process for creating an encapsulated electrophoretic display, comprising the steps of: (a) providing a binder; (b) curing said binder; and (c) applying a mechanical force to said binder, whereby application of the force causes said binder to form at least one capsule in a non-spherical shape.
Claim 2
Dependent Claim 47 words
A process for creating an encapsulated electrophoretic display, comprising the steps of: (a) providing a binder; (b) curing said binder; and (c) applying a mechanical force to said binder, whereby application of the force causes said binder to form at least one capsule in a non-spherical shape.
Claim 3
Dependent Claim 12 words
The process of claim 1, wherein steps (b) and (c) occur simultaneously.
Claim 4
Dependent Claim 29 words
The process of claim 1, wherein said mechanical force is applied by an apparatus selected from the group consisting of rollers, a vacuum lamination press, and a mechanical press.
Claim 5
Dependent Claim 14 words
The process of claim 1, wherein said mechanical force causes the binder to stretch.
Claim 6
Dependent Claim 14 words
The process of claim 4 wherein the binder stretches along at least one axis.
Claim 7
Dependent Claim 10 words
The process of claim 4 wherein the binder stretches asymmetrically.
Claim 8
Dependent Claim 12 words
The process of claim 1 wherein the mechanical force comprises non-uniform shear.
Claim 9
Dependent Claim 12 words
The process of claim 1 wherein the mechanical force comprises compressive pressure.
Claim 10
Dependent Claim 41 words
A process for creating an encapsulated electrophoretic display, comprising the steps of: (a) providing an evaporative binder; and (b) curing said binder, whereby said binder deforms as it cures causing the formation of at least one capsule in a non-spherical shape.
Claim 11
Dependent Claim 41 words
A process for creating an encapsulated electrophoretic display, comprising the steps of: (a) providing an evaporative binder; and (b) curing said binder, whereby said binder deforms as it cures causing the formation of at least one capsule in a non-spherical shape.
Claim 12
Dependent Claim 22 words
The process of claim 9, wherein said evaporative binder is selected from the group consisting of an acrylic, urethane, and poly(vinyl alcohol).
Claim 13
Dependent Claim 12 words
The process of claim 9 wherein the binder comprises an organic liquid.
Claim 14
Dependent Claim 12 words
The process of claim 9 wherein the binder comprises an aqueous liquid.
Claim 15
Dependent Claim 11 words
The process of claim 9 wherein the binder cures in stages.
Claim 16
Dependent Claim 11 words
The process of claim 9 wherein the binder shrinks while curing.
Claim 17
Dependent Claim 11 words
The process of claim 9 wherein the binder flattens while curing.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2003-05-23 2003-11-22 2004-05-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2007-05-23 2007-11-22 2008-05-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2011-05-23 2011-11-22 2012-05-23 $7700.00 Window Closed / Lapsed

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