US6178034B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochromic devices
Assignee: Magna Donnelly Corp
•
Filing: 1997-04-09
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Granted: 2001-01-23
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Expires: 2017-04-09
Abstract
Abstract An electrochromic device is disclosed having a selective ion transport layer which separates an electrochemically active material from an electrolyte containing a redox active material. The devices are particularly useful as large area architectural and automotive glazings due to there reduced back reaction.
Inventors
- 👤 Pierre M. Allemand
- 👤 Randall F. Grimes
- 👤 Andrew R. Ingle
- 👤 John P. Cronin
- 👤 Steve R. Kennedy
- 👤 Anoop Agrawal
- 👤 Jonathan M. Boulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:57
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1514; G02F1/1523; G02F1/1525; G02F1/1503; G02F1/153; G02F1/1533; G02F2001/1536
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
70 words
An electrochromic device comprising a conducting electrode opposing a counter electrode with (i) an electrochemically active material layer, (ii) a selective ion transport layer and (iii) an electrolyte containing at least one redox active material, wherein said electrochemically active material layer, said selective ion transport layer and said electrolyte are sequentially disposed between said conducting electrode and said counter conducting electrode and at least one of said electrodes is transparent.
Claim 2
Dependent Claim
70 words
An electrochromic device comprising a conducting electrode opposing a counter electrode with (i) an electrochemically active material layer, (ii) a selective ion transport layer and (iii) an electrolyte containing at least one redox active material, wherein said electrochemically active material layer, said selective ion transport layer and said electrolyte are sequentially disposed between said conducting electrode and said counter conducting electrode and at least one of said electrodes is transparent.
Claim 3
Dependent Claim
47 words
An electrochromic device according to claim 1 , further comprising a first substrate disposed on an outwardly facing surface of one of said electrodes and a second substrate disposed on an other outwardly facing surface of said electrodes, wherein at least one of said substrates is transparent.
Claim 4
Dependent Claim
25 words
An electrochromic device according to claim 1 , wherein at least one of the electrochemically active material layer or the redox active material is electrochromic.
Claim 5
Dependent Claim
17 words
An electrochromic device according to claim 1 , wherein said electrolyte contains at least one ionic material.
Claim 6
Dependent Claim
21 words
An electrochromic device according to claim 1 , wherein the electrolyte contains a mixture of salts having different cations or anions.
Claim 7
Dependent Claim
13 words
An electrochromic device according to claim 1 , wherein the electrolyte contains water.
Claim 8
Dependent Claim
21 words
An electrochromic device according to claim 1 , wherein the redox active material is a viologen salt, ferrocene or derivatives thereof.
Claim 9
Dependent Claim
36 words
An electrochromic device according to claim 1 , wherein the selective ion transport layer is comprised of a selective ion transport material selected from the group consisting of hydrated oxides, non-hydrated oxides, polycerams, or ion-conducting polymers.
Claim 10
Dependent Claim
29 words
An electrochromic device according to claim 1 , wherein the selective ion transport layer is comprised of a selective ion transparent material that is a sulfonic acid containing polymer.
Claim 11
Dependent Claim
31 words
An electrochromic device according to claim 9 , wherein protons of said sulfonic acid containing polymer are at least partially replaced by at least one of lithium ions or sodium ions.
Claim 12
Dependent Claim
32 words
An electrochromic device according to claim 1 , wherein the electrochemically active material layer contains an additive selected from group consisting of UV stabilizers, adhesion promoting agents, heat stabilizers and mixtures thereof.
Claim 13
Dependent Claim
26 words
An electrochromic device according to claim 1 , wherein the electrolyte contains an additive selected from group consisting of UV stabilizers, heat stabilizers and mixtures thereof.
Claim 14
Dependent Claim
21 words
An electrochromic device according to claim 1 , wherein the electrolyte is comprised of a mixture of at least two solvents.
Claim 15
Dependent Claim
18 words
An electrochromic device according to claim 1 , wherein the electrolyte contains a passive visible or infrared dye.
Claim 16
Dependent Claim
18 words
An electrochromic device according to claim 1 , wherein the electrolyte is comprised of an inert polymeric additive.
Claim 17
Dependent Claim
18 words
An electrochromic device according to claim 1 , wherein the electrolyte is comprised of a solid polymeric material.
Claim 18
Dependent Claim
30 words
An electrochromic device according to claim 1 , wherein the electrolyte is comprised of at least one monomer which is polymerizable to a solid after exposure to heat or radiation.
Claim 19
Dependent Claim
40 words
An electrochromic device according to claim 1 , wherein the electrolyte contains at least one additive selected from the group consisting of inert organic oxide fillers, inorganic sulfate fillers, inorganic carbonate fillers, inorganic pigments, organic pigments, surfactants and dispersing agents.
Claim 20
Dependent Claim
16 words
An electrochromic device according to claim 1 , wherein the electrochemically active material layer is electrochromic.
Claim 21
Dependent Claim
46 words
An electrochromic device according to claim 1 , wherein the electrochemically active material layer is selected from the group consisting of an inorganic oxide, a copolymer, a blend and a composite, wherein said copolymer, said blend or said composite contains at least one electrochemically active compound.
Claim 22
Dependent Claim
19 words
An electrochromic device according to claim 20 , wherein the inorganic oxide is tungsten oxide or doped tungsten oxide.
Claim 23
Dependent Claim
27 words
An electrochromic device according to claim 21 , wherein said doped tungsten oxide is doped with at least one of lithium, sodium, potassium, molybendum, vanadium or titanium.
Claim 24
Dependent Claim
25 words
An electrochromic device according to claim 1 , wherein the electrochemically active material layer is electronically conductive in at least its oxidized or reduced state.
Claim 25
Dependent Claim
28 words
An electrochromic device according to claim 1 , wherein the electrochemically active material layer is selected from the group consisting of polyaniline, a polyaniline derivative and mixtures thereof.
Claim 26
Dependent Claim
32 words
An electrochromic device according to claim 1 , wherein the at least one transparent electrode is comprised of a group selected from doped indium oxide, doped tin oxide and doped zinc oxide.
Claim 27
Dependent Claim
38 words
An electrochromic device according to claim 2 , wherein the at least one transparent substrate is selected from the group consisting of specific colored substrates, photochromic substrates, infrared absorbing substrates, reflecting substrates, ultraviolet absorbing substrates and mixtures thereof.
Claim 28
Dependent Claim
50 words
An electrochromic device according to claim 2 , wherein the at least one transparent substrate is further comprised of a coating on the outward facing surface, said coating selected from the group consisting of an antireflection coating, an antifogging coating, an antiabrasion coating, an ultraviolet quenching coating and mixtures thereof.
Claim 29
Dependent Claim
49 words
An electrochromic device according to claim 2 , wherein at least one of the substrates is further comprised of a coating, tape or lamination selected from the group consisting of an antilacerative, an antiscatter, a colored, a ultraviolet blocking, an IR blocking coating, tape or lamination and mixtures thereof.
Claim 30
Dependent Claim
15 words
An electrochromic device according to claim 2 , wherein one of said substrates is reflective.
Claim 31
Dependent Claim
26 words
An electrochromic device according to claim 2 , further comprising a reflective layer disposed on an inward or outward facing surface of one of said substrates.
Claim 32
Dependent Claim
17 words
An electrochromic device according to claim 1 , wherein one of said electrodes is a reflective material.
Claim 33
Dependent Claim
19 words
An electrochromic device according to claim 2 , wherein said device is a vehicular mirror or a vehicular glazing.
Claim 34
Dependent Claim
22 words
An electrochromic device according to claim 32 , wherein said vehicular mirror is an interior vehicular mirror or an exterior vehicular mirror.
Claim 35
Dependent Claim
17 words
An electrochromic device according to claim 33 , wherein said interior vehicular mirror is a rearview mirror.
Claim 36
Dependent Claim
30 words
An electrochromic device according to claim 32 , wherein said vehicular glazing is selected from the group consisting of a vehicular window, a sun roof, sun visor and a shadeband.
Claim 37
Dependent Claim
33 words
An electrochromic device according to claim 2 , wherein said device is an architectural glazing selected from the group consisting of an exterior window, an interior portion, a skylight and a light tube.
Claim 38
Dependent Claim
19 words
An electrochromic device according to claim 2 , wherein said device is a filter for a display or monitor.
Claim 39
Dependent Claim
14 words
An electrochromic device according to claim 2 , wherein said device is a display.
Claim 40
Dependent Claim
15 words
An electrochromic device according to claim 2 , wherein said device is eyewear or sunglasses.
Claim 41
Dependent Claim
43 words
An electrochromic device according to claim 1 , wherein said selective ion transport layer is prepared by the process of depositing a liquid medium comprising a selective ion transport material and a solvent on the electrochemically active material layer and evaporating said solvent.
Claim 42
Dependent Claim
29 words
An electrochromic device according to claim 40 , wherein the selective ion transport material is selected form the group consisting of hydrated oxides, non-hydrated oxides, polycerams or ion-conducting polymers.
Claim 43
Dependent Claim
23 words
An electrochromic device according to claim 41 , wherein said ion conducting polymers are selected from copolymers containing ion-conductive moieties or non-ionic polymers.
Claim 44
Dependent Claim
15 words
An electrochromic device according to claim 40 , wherein said liquid medium comprises a surfactant.
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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) | 2004-01-23 | 2004-07-24 | 2005-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-23 | 2008-07-24 | 2009-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-23 | 2012-07-24 | 2013-01-23 | $7700.00 | Window Closed / Lapsed |