Patent US4474433A successfully refreshed from Google Patents.
US4474433A
Expired / Lapsed
US
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Chemical color conversion of electrochromic display material
Assignee: Boeing North American Inc
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Filing: 1983-09-16
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Granted: 1984-10-02
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Expires: 2003-09-16
Abstract
Abstract A deposit of electrochromic display material such as, for example, lutetium diphthalocyanine chemically treated to have substantially the same color as electrolytically cycled deposits of the same display material.
Inventors
- 👤 Margie M. Nicholson
- 👤 Thomas P. Weismuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:42
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/0009; G02F1/0018; G02F1/01; G02F1/15; G02F1/1514; G02F1/1516; G02F1/153; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
42 words
A deposit of electrochromic display material on a substrate wherein said display material is in contact with and chemically treated with substituted imidazoline and silicone glycol surfactants to have substantially the same color as electrolytically cycled deposits of the same display material.
Claim 2
Dependent Claim
42 words
A deposit of electrochromic display material on a substrate wherein said display material is in contact with and chemically treated with substituted imidazoline and silicone glycol surfactants to have substantially the same color as electrolytically cycled deposits of the same display material.
Claim 3
Dependent Claim
36 words
The deposit of electrochromic display material recited in claim 1, wherein said substituted imidazoline has substituent groups CH 2 CH 2 OH and a fatty acid group or a rosin acid group derived from tall oil.
Claim 4
Dependent Claim
22 words
The deposit of electrochromic display recited in claim 1, wheren said display material is a diphthalocyanine of a rare-earth, yttrium or scandium.
Claim 5
Dependent Claim
17 words
The deposit of electrochromic display material recited in claim 3, wherein said display material is lutetium diphthalocyanine.
Claim 6
Dependent Claim
101 words
A display device, comprising: a substrate having a character electrode region and a background region, wherein the character electrode region is adapted for connection to a source of electrical energy and wherein the background region is free of means of connection to a source of electrical energy; and a deposit of electrochromic display material on the character electrode and background regions of said substrate wherein the portion of said deposit on the background region is chemically treated with surfactant to have substantially the same color as the deposit on the character electrode region after electrolytic cycling of the character electrode region.
Claim 7
Dependent Claim
101 words
A display device, comprising: a substrate having a character electrode region and a background region, wherein the character electrode region is adapted for connection to a source of electrical energy and wherein the background region is free of means of connection to a source of electrical energy; and a deposit of electrochromic display material on the character electrode and background regions of said substrate wherein the portion of said deposit on the background region is chemically treated with surfactant to have substantially the same color as the deposit on the character electrode region after electrolytic cycling of the character electrode region.
Claim 8
Dependent Claim
15 words
The display device of claim 5, wherein the surfactant is substituted imidazoline and silicone glycol.
Claim 9
Dependent Claim
32 words
The display device of claim 6, wherein said substituted imidazoline has substituent groups CH 2 CH 2 OH and a fatty acid group or a rosin acid group derived from tall oil.
Claim 10
Dependent Claim
21 words
The display device recited in claim 5, wherein said display material is a diphthalocyanine of a rare earth, yttrium or scandium.
Claim 11
Dependent Claim
14 words
The display device recited in claim 8, wherein said display material is lutetium diphthalocyanine.
Claim 12
Independent Claim
72 words
A method of providing a chemically treated deposit of electrochromic display material having substantially the same color as electrolytically cycled deposits of the same display material, comprising the steps of: first providing a substrate; then treating said substrate by contact with a liquid vehicle containing substituted imidazoline and silicone glycol surfactants on said substrate; then driving said liquid vehicle from substrate; and then depositing said electrochromic display material on said treated substrate.
Claim 13
Independent Claim
72 words
A method of providing a chemically treated deposit of electrochromic display material having substantially the same color as electrolytically cycled deposits of the same display material, comprising the steps of: first providing a substrate; then treating said substrate by contact with a liquid vehicle containing substituted imidazoline and silicone glycol surfactants on said substrate; then driving said liquid vehicle from substrate; and then depositing said electrochromic display material on said treated substrate.
Claim 14
Dependent Claim
32 words
The method recited in claim 10, wherein said substituted imidazoline has substituent groups CH 2 CH 2 OH and a fatty acid group or a rosin acid group derived from tall oil.
Claim 15
Independent Claim
71 words
A method of providing a chemically treated deposit of electrochromic display material having substantially the same color as electrolytically cycled deposits of the same display material, comprising the steps of: first providing a substrate; then depositing said electrochromic display material on said substrate; then contacting said deposited display material with a liquid vehicle containing substituted imidazoline and silicone glycol surfactants; and then driving said liquid vehicle from said deposited display material.
Claim 16
Independent Claim
71 words
A method of providing a chemically treated deposit of electrochromic display material having substantially the same color as electrolytically cycled deposits of the same display material, comprising the steps of: first providing a substrate; then depositing said electrochromic display material on said substrate; then contacting said deposited display material with a liquid vehicle containing substituted imidazoline and silicone glycol surfactants; and then driving said liquid vehicle from said deposited display material.
Claim 17
Dependent Claim
32 words
The method recited in claim 12, wherein said substituted imidazoline has substituent groups CH 2 CH 2 OH and a fatty acid group or a rosin acid group derived from tall oil.
Claim 18
Independent Claim
50 words
A method of providing a chemically treated deposit of electrochromic display material having substantially the same color as electrolytically cycled deposits of the same display material, comprising the steps of: providing a substrate; and vacuum depositing said electrochromic display material and substituted imidazoline and silicone glycol surfactants on said substrate.
Claim 19
Independent Claim
50 words
A method of providing a chemically treated deposit of electrochromic display material having substantially the same color as electrolytically cycled deposits of the same display material, comprising the steps of: providing a substrate; and vacuum depositing said electrochromic display material and substituted imidazoline and silicone glycol surfactants on said substrate.
Claim 20
Dependent Claim
32 words
The method recited in claim 14, wherein said substituted imidazoline has substituent groups CH 2 CH 2 OH and a fatty acid group or a rosin acid group derived from tall oil.
Claim 21
Dependent Claim
18 words
The method of claim 14, wherein said display material and said surfactants are vacuum-deposited on said substrate simultaneously.
Claim 22
Dependent Claim
32 words
The method of claim 14, wherein said step of vacuum-depositing comprising the steps of: first vacuum-depositing said display material on said substrate; and then vacuum-depositing said surfactants on said deposited display material.
Claim 23
Dependent Claim
33 words
The method of claim 14, wherein said step of vacuum-depositing comprises the steps of: first treating said substrate by vacuum-depositing said surfactants thereon; and then vacuum-depositing said display material on said treated substrate.
Claim 24
Dependent Claim
14 words
A deposit of electrochromic display material formed according to the method of claim 10.
Claim 25
Dependent Claim
14 words
A deposit of electrochromic display material formed according to the method of claim 11.
Claim 26
Dependent Claim
14 words
A deposit of electrochromic display material formed according to the method of claim 12.
Claim 27
Dependent Claim
14 words
A deposit of electrochromic display material formed according to the method of claim 13.
Claim 28
Dependent Claim
14 words
A deposit of electrochromic display material formed according to the method of claim 14.
Claim 29
Dependent Claim
14 words
A deposit of electrochromic display material formed according to the method of claim 15.
Claim 30
Dependent Claim
14 words
A deposit of electrochromic display material formed according to the method of claim 16.
Claim 31
Dependent Claim
14 words
A deposit of electrochromic display material formed according to the method of claim 17.
Claim 32
Dependent Claim
14 words
A deposit of electrochromic display material formed according to the method of claim 18.
References Cited (Backward Citations)
US4039255A
Cited
US4036551A
Cited
JPS525684A
Cited
DE2756551A1
Cited
US4184751A
Cited
US4210390A
Cited
US4266335A
Cited
JPS54137359A
Cited
WO1980002462A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |