US4837592A
Expired / Lapsed
US
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Method of making an electrochromic layer and new electrochromic device made therefrom
Assignee: Ford Motor Co
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Filing: 1987-12-24
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Granted: 1989-06-06
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Expires: 2007-12-24
Abstract
Abstract This invention teaches an electrochromic device in which an electrochromic layer is positioned between two electrodes. The electrochromic layer comprises an inorganic based bulk material supporting electrochromic particles and ion producing particles in fixed but generally distributed positions therewithin. The bulk material permits migration of ions produced by the ion producing particles to and from the electrochromic particles upon change in voltage between the first and second electrodes. The bulk material also prohibits the passage of electrons therethrough when a voltage is applied between the first electrode and the second electrode, whereby an electric field is built up between the first and second electrodes which causes migration of the ions. A preferred method of making a material which can form an electrochromic layer is also disclosed.
Inventors
- 👤 Hulya Demiryont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:38
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1514; G02F1/1523; G02F1/1524
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
113 words
An electrochromic device which comprises: a first electrode; a second electrode; an electrochromic layer between said first and said second electrodes comprising: an inorganic based solid material supporting electrochromic particles and ion producing particles in fixed but generally distributed positions therewithin, said solid material permitting migration of ions produced by said ion producing particles to and from said electrochromic particles upon change in voltage between said first and second electrodes, said solid bulk material also prohibiting the passage of electrons therethrough when a voltage is applied between said first electrode and said second electrode, whereby an electric field is built up between said first and second electrodes which causes migration of said ions.
Claim 2
Dependent Claim
113 words
An electrochromic device which comprises: a first electrode; a second electrode; an electrochromic layer between said first and said second electrodes comprising: an inorganic based solid material supporting electrochromic particles and ion producing particles in fixed but generally distributed positions therewithin, said solid material permitting migration of ions produced by said ion producing particles to and from said electrochromic particles upon change in voltage between said first and second electrodes, said solid bulk material also prohibiting the passage of electrons therethrough when a voltage is applied between said first electrode and said second electrode, whereby an electric field is built up between said first and second electrodes which causes migration of said ions.
Claim 3
Dependent Claim
18 words
The electrochromic device of claim 1 wherein: one of said first or second electrodes is a transparent electrode.
Claim 4
Dependent Claim
17 words
The electrochromic device of claim 1 wherein: both said first and said second electrodes are transparent electrodes.
Claim 5
Dependent Claim
14 words
The electrochromic device of claim 3 wherein: said inorganic based material includes aluminum oxide.
Claim 6
Dependent Claim
15 words
The electrochromic device of claim 3 wherein: said inorganic based solid material includes tantalum oxide.
Claim 7
Dependent Claim
15 words
The electrochromic device of claim 3 wherein: said inorganic based solid material includes silicon oxide.
Claim 8
Dependent Claim
14 words
The electrochromic device of claim 1 wherein: said electrochromic particles are anodic electrochromic particles.
Claim 9
Dependent Claim
15 words
The electrochromic device of claim 7 wherein: said anodic electrochromic particles are all the same.
Claim 10
Dependent Claim
14 words
The electrochromic device of claim 1 wherein: said electrochromic particles are cathodic electrochromic particles.
Claim 11
Dependent Claim
15 words
The electrochromic device of claim 9 wherein: said cathodic electrochromic particles are all the same.
Claim 12
Dependent Claim
20 words
The electrochromic device of claim 1 wherein: said electrochromic particles are a mixture of both anodic and cathodic electrochromic particles.
Claim 13
Dependent Claim
24 words
The electrochromic device of claim 11 wherein: said anodic electrochromic particles are all the same and said cathodic electrochromic particles are all the same.
Claim 14
Independent Claim
86 words
A method of making a material which can form an electrochromic layer which comprises the steps of: applying an inorganic solid material permitting the migration of ions therethrough but prohibiting the passage of electrons therethrough, electrochromic particles, and ion producing particles to an electrode by thermally evaporating a mixture of said inorganic solid material, electrochromic particles, and ion producing particles in a vacuum of about 10 -4 torr with said mixture and said electrode being spaced from one another by a distance of about l0 cm.
Claim 15
Independent Claim
86 words
A method of making a material which can form an electrochromic layer which comprises the steps of: applying an inorganic solid material permitting the migration of ions therethrough but prohibiting the passage of electrons therethrough, electrochromic particles, and ion producing particles to an electrode by thermally evaporating a mixture of said inorganic solid material, electrochromic particles, and ion producing particles in a vacuum of about 10 -4 torr with said mixture and said electrode being spaced from one another by a distance of about l0 cm.
Claim 16
Dependent Claim
16 words
The method of claim 13 wherein: said electrochromic material is a finely divided anodic electrochromic material.
Claim 17
Dependent Claim
16 words
The method of claim 14 wherein: said finely divided anodic electrochromic material is all the same.
Claim 18
Dependent Claim
18 words
The method of claim 13 wherein: said finely divided electrochromic material is a finely divided cathodic electrochromic material.
Claim 19
Dependent Claim
16 words
The method of claim 16 wherein; said finely divided cathodic electrochromic material is all the same.
Claim 20
Dependent Claim
25 words
The method of claim 13 wherein: said electrochromic material is a mixture of both finely divided anodic electrochromic material and finely divided cathodic electrochromic material.
Claim 21
Dependent Claim
27 words
The method of claim 18 wherein: said finely divided anodic electrochromic material is all the same and said finely divided cathodic electrochromic material is all the same.
Claim 22
Dependent Claim
14 words
The method of claim 13 wherein: said inorganic based solid material includes aluminum oxide.
Claim 23
Dependent Claim
14 words
The method of claim 13 wherein: said inorganic based solid material includes tantalum oxide.
Claim 24
Dependent Claim
14 words
The method of claim 13 wherein: said inorganic based solid material includes silicon oxide
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
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