US6327072B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microcell electrophoretic displays
Assignee: E Ink Corp
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Filing: 2000-04-06
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Granted: 2001-12-04
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Expires: 2020-04-06
Abstract
Abstract An electrophoretic display element includes at least one substrate and at least one cell defined by a cell wall. The cell is disposed on the substrate and contains a suspending medium. In some embodiments, the cell has a width that is not greater than about three times a height of the cell wall.
Inventors
- 👤 Barrett Comiskey
- 👤 Russell J. Wilcox
- 👤 Ian Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:46
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/165; G02F1/166; G02F1/167; B; B33; B33Y; B33Y80/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
46 words
An electrophoretic display element comprising: at least one substrate and at least one cell, the cell defined by a cell wall and disposed on the substrate, wherein the cell has a width that is not greater than about three times a height of the cell wall.
Claim 2
Dependent Claim
46 words
An electrophoretic display element comprising: at least one substrate and at least one cell, the cell defined by a cell wall and disposed on the substrate, wherein the cell has a width that is not greater than about three times a height of the cell wall.
Claim 3
Dependent Claim
26 words
The element of claim 1 wherein the cell has a width that is from about two to about three times a height of the cell wall.
Claim 4
Dependent Claim
16 words
The element of claim 1 in which the cell wall is less than 10 micrometers wide.
Claim 5
Dependent Claim
14 words
The element of claim 1 wherein the substrate comprises a control grid electrode structure.
Claim 6
Dependent Claim
12 words
The element of claim 4 wherein the cell comprises two laminated structures.
Claim 7
Dependent Claim
33 words
The element of claim 1 wherein the cell wall is formed at least in part with a technique selected from the group consisting of photolithography, sandblasting, screenprinting, embossing, laser etching and radiation curing.
Claim 8
Dependent Claim
36 words
The element of claim 1 wherein the substrate is permeable to a suspending fluid and substantially impermeable to electrophoretic particles, such that the suspending fluid and the particles fill a cavity defined by the cell walls.
Claim 9
Dependent Claim
30 words
The element of claim 1 wherein the substrate is coated with a polymer, the polymer being insoluble in a suspending medium contained within a cavity defined by the cell walls.
Claim 10
Dependent Claim
23 words
The element of claim 1 wherein a suspending fluid contained within a cavity defined by the cell walls comprises a substantially clear liquid.
Claim 11
Dependent Claim
17 words
The element of claim 1 wherein the width is in the range of 5 to 200 micrometers.
Claim 12
Dependent Claim
17 words
The element of claim 1 wherein the height is in the range of 10 to 100 micrometers.
Claim 13
Dependent Claim
50 words
An electrophoretic display element comprising at least one substrate and at least one cell defined by a cell wall and disposed on the substrate, the cell containing a suspending medium and a plurality of electrophoretic particles, wherein the cell has a shape that minimizes hydrodynamic motion within the suspending medium.
Claim 14
Dependent Claim
50 words
An electrophoretic display element comprising at least one substrate and at least one cell defined by a cell wall and disposed on the substrate, the cell containing a suspending medium and a plurality of electrophoretic particles, wherein the cell has a shape that minimizes hydrodynamic motion within the suspending medium.
Claim 15
Dependent Claim
13 words
The element of claim 12 wherein the hydrodynamic motion comprises a convective current.
Claim 16
Dependent Claim
17 words
The element of claim 13 wherein the height is in the range of 10 to 100 micrometers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-12-03 | 2005-06-04 | 2005-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-12-03 | 2009-06-04 | 2009-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-12-03 | 2013-06-04 | 2013-12-04 | $7700.00 | Window Closed / Lapsed |