US6262833B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capsules for electrophoretic displays and methods for making the same
Assignee: E Ink Corp
•
Filing: 1999-10-06
•
Granted: 2001-07-17
•
Expires: 2019-10-06
Abstract
Abstract An encapsulated electrophoretic display is made of at least one display element. Each display element includes at least one capsule. The capsule contains at least two substantially immiscible fluids. The first fluid includes an additive, and the second fluid contains a plurality of particles.
Inventors
- 👤 Andrew Loxley
- 👤 Barrett Comiskey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:45
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; G; G02; G02F; G02F1/00; G02F1/01; G02F1/165; G02F1/166; G02F1/167; G02F1/1675; G02F1/16757
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
31 words
An encapsulated electrophoretic display element comprising a capsule containing at least two substantially immiscible fluids, wherein a first fluid includes an additive and a second fluid includes a plurality of particles.
Claim 2
Dependent Claim
31 words
An encapsulated electrophoretic display element comprising a capsule containing at least two substantially immiscible fluids, wherein a first fluid includes an additive and a second fluid includes a plurality of particles.
Claim 3
Dependent Claim
26 words
The display element of claim 1 wherein at least a portion of the particles of the second fluid is not substantially dispersible in the first fluid.
Claim 4
Dependent Claim
20 words
The display element of claim 1 wherein at least a portion of the plurality of particles has a surface treatment.
Claim 5
Dependent Claim
12 words
The display element of claim 1 wherein the additive comprises a dye.
Claim 6
Dependent Claim
16 words
The display element of claim 4 wherein the dye is substantially insoluble in the second fluid.
Claim 7
Dependent Claim
15 words
The display element of claim 4 wherein the dye is soluble in the first fluid.
Claim 8
Dependent Claim
15 words
The display element of claim 1 wherein the additive comprises a second plurality of particles.
Claim 9
Dependent Claim
23 words
The display element of claim 7 wherein at least a portion of the second particles is not substantially dispersible in the second fluid.
Claim 10
Dependent Claim
19 words
The display element of claim 7 wherein at least a portion of the second particles has a surface treatment.
Claim 11
Dependent Claim
18 words
The display element of claim 7 wherein the second particles are capable of moving under an electric field.
Claim 12
Dependent Claim
19 words
The display element of claim 7 wherein the second fluid is capable of being displaced by the second particles.
Claim 13
Dependent Claim
22 words
The display element of claim 1 wherein the first fluid comprises a polar substance and the second fluid comprises a non-polar substance.
Claim 14
Dependent Claim
22 words
The display element of claim 1 wherein the first fluid comprises a non-polar substance and the second fluid comprises a polar substance.
Claim 15
Dependent Claim
21 words
The display element of claim 1 wherein the particles of the second fluid are capable of moving under an electric field.
Claim 16
Dependent Claim
22 words
The display element of claim 1 wherein the first fluid is capable of being displaced by the particles of the second fluid.
Claim 17
Dependent Claim
29 words
The display element of claim 1 wherein the particles of the second fluid comprise at least two different species of particles, the species of particles differing in their size.
Claim 18
Dependent Claim
29 words
The display element of claim 1 wherein the particles of the second fluid comprise at least two different species of particles, the species of particles differing in their shape.
Claim 19
Dependent Claim
69 words
A process for creating an encapsulated electrophoretic display, comprising the steps of: (a) forming a first mixture comprising an additive in a first fluid; (b) forming a second mixture comprising a plurality of particles in a second fluid; (c) combining the first mixture and the second mixture into a droplet, wherein the first mixture and the second mixture are substantially immiscible; and (d) forming a capsule around the droplet.
Claim 20
Dependent Claim
69 words
A process for creating an encapsulated electrophoretic display, comprising the steps of: (a) forming a first mixture comprising an additive in a first fluid; (b) forming a second mixture comprising a plurality of particles in a second fluid; (c) combining the first mixture and the second mixture into a droplet, wherein the first mixture and the second mixture are substantially immiscible; and (d) forming a capsule around the droplet.
Claim 21
Dependent Claim
11 words
The process of claim 18 wherein the additive comprises a dye.
Claim 22
Dependent Claim
14 words
The process of claim 18 wherein the additive comprises a second plurality of particles.
Claim 23
Dependent Claim
39 words
An encapsulated electrophoretic display comprising at least one display element, each display element comprising a capsule containing at least two substantially immiscible fluids, wherein a first fluid includes an additive and a second fluid includes a plurality of particles.
Claim 24
Dependent Claim
39 words
An encapsulated electrophoretic display comprising at least one display element, each display element comprising a capsule containing at least two substantially immiscible fluids, wherein a first fluid includes an additive and a second fluid includes a plurality of particles.
Claim 25
Dependent Claim
15 words
The display of claim 21 further comprising at least one electrode adjacent the display element.
Claim 26
Dependent Claim
11 words
The display of claim 21 wherein the additive comprises a dye.
Claim 27
Dependent Claim
14 words
The display of claim 21 wherein the additive comprises a second plurality of particles.
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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) | 2004-07-16 | 2005-01-15 | 2005-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-16 | 2009-01-15 | 2009-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-16 | 2013-01-15 | 2013-07-17 | $7700.00 | Window Closed / Lapsed |