US5828432A
Expired / Lapsed
US
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Conducting substrate, liquid crystal device made therefrom and liquid crystalline composition in contact therewith
Assignee: University of Pennsylvania
•
Filing: 1997-06-25
•
Granted: 1998-10-27
•
Expires: 2017-06-25
Abstract
Abstract Conducting substrate for use in display device having a conducting polymer on the surface of a rigid or flexible, flat, curved or bent substrate.
Inventors
- 👤 Ranganathan Shashidhar
- 👤 Jeffrey M. Calvert
- 👤 Renate J. Crawford
- 👤 Kenneth J. Wynne
- 👤 Terrence G. Vargo
- 👤 Alan G. MacDiarmid
- 👤 Jamshid K. Avlyanov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:26
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/13439; G02F1/133305
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
37 words
A display device, comprising a substrate, a conducting polymer on a surface of said substrate, and a lead electrically connected to said conducting polymer, wherein said conducting polymer has a conductivity of 100 to 5×10 3 S/cm.
Claim 2
Dependent Claim
37 words
A display device, comprising a substrate, a conducting polymer on a surface of said substrate, and a lead electrically connected to said conducting polymer, wherein said conducting polymer has a conductivity of 100 to 5×10 3 S/cm.
Claim 3
Dependent Claim
16 words
The device of claim 1, further comprising a voltage source electrically connected to said conducting polymer.
Claim 4
Dependent Claim
25 words
The device of claim 1, wherein a liquid crystalline material is in contact with said conducting polymer either directly or through a dielectric passivating layer.
Claim 5
Dependent Claim
16 words
The device of claim 3, further comprising a voltage source electrically connected to said conducting polymer.
Claim 6
Dependent Claim
18 words
The device of claim 1, wherein said conducting polymer forms a pattern on the surface of the substrate.
Claim 7
Dependent Claim
18 words
The device of claim 2, wherein said conducting polymer forms a pattern on the surface of the substrate.
Claim 8
Dependent Claim
32 words
The device of claim 1, wherein said substrate is polymeric and wherein said conducting polymer is selected from the group consisting of polyaniline, polypyrrole, and polythiophene, with or without a dopant salt.
Claim 9
Dependent Claim
10 words
The device of claim 1, wherein said substrate is flexible.
Claim 10
Dependent Claim
16 words
The device of claim 1, wherein said substrate is glass, polyethyleneterephthalate, mylar or fluorinated ethylene propylene.
Claim 11
Dependent Claim
12 words
The device of claim 1, wherein said substrate consists of polymeric material.
Claim 12
Dependent Claim
10 words
The device of claim 3, wherein said substrate is flexible.
Claim 13
Dependent Claim
17 words
The device of claim 1, wherein said conducting polymer has a conductivity of 100 to 380 S/cm.
Claim 14
Dependent Claim
15 words
The device of claim 11, further comprising a voltage source electrically connected to said lead.
Claim 15
Dependent Claim
25 words
The device of claim 1, wherein a liquid crystalline material is in contact with said conducting polymer either directly or through a dielectric passivating layer.
Claim 16
Dependent Claim
18 words
The device of claim 12, wherein said conducting polymer forms a pattern on said surface of said substrate.
Claim 17
Dependent Claim
32 words
The device of claim 12, wherein said substrate is polymeric and wherein said conducting polymer is selected from the group consisting of polyaniline, polypyrrole, and polythiophene, with or without a dopant salt.
Claim 18
Dependent Claim
13 words
The device of claim 16, wherein said conducting polymer comprises a dopant salt.
Claim 19
Dependent Claim
10 words
The device of claim 11, wherein said substrate is flexible.
Claim 20
Dependent Claim
22 words
The device of claim 11, wherein said substrate is selected from the group consisting of glass, polyethyleneterephthalate, mylar, and fluorinated ethylene propylene.
Claim 21
Dependent Claim
18 words
The device of claim 1, wherein said conducting polymer has a conductivity of 232 to 5×10 3 S/cm.
Claim 22
Dependent Claim
13 words
The device of claim 12, wherein said substrate consists of a polymeric material.
Claim 23
Dependent Claim
18 words
The device of claim 3, wherein a liquid crystalline material is in contact with said conducting polymer directly.
Claim 24
Dependent Claim
22 words
The device of claim 3, wherein a liquid crystalline material is in contact with said conducting polymer through a dielectric passivating layer.
Claim 25
Dependent Claim
18 words
The device of claim 3, wherein said conducting polymer forms a pattern on said surface of said substrate.
Claim 26
Dependent Claim
26 words
The device of claim 3, wherein said conducting polymer is selected from the group consisting of polyaniline, polypyrrole, and polythiophene, with or without a dopant salt.
Claim 27
Dependent Claim
25 words
The device of claim 13, wherein a liquid crystalline material is in contact with said conducting polymer either directly or through a dielectric passivating layer.
Claim 28
Dependent Claim
18 words
The device of claim 13, wherein a liquid crystalline material is in contact with said conducting polymer directly.
Claim 29
Dependent Claim
22 words
The device of claim 13, wherein a liquid crystalline material is in contact with said conducting polymer through a dielectric passivating layer.
Claim 30
Dependent Claim
18 words
The device of claim 13, wherein said conducting polymer forms a pattern on said surface of said substrate.
Claim 31
Dependent Claim
26 words
The device of claim 13, wherein said conducting polymer is selected from the group consisting of polyaniline, polypyrrole, and polythiophene, with or without a dopant salt.
Claim 32
Dependent Claim
10 words
The device of claim 13, wherein said substrate is flexible.
Claim 33
Dependent Claim
15 words
The device of claim 13, further comprising a voltage source electrically connected to said lead.
Claim 34
Dependent Claim
15 words
The device of claim 15, further comprising a voltage source electrically connected to said lead.
Claim 35
Dependent Claim
18 words
The device of claim 15, wherein said conducting polymer forms a pattern on said surface of said substrate.
Claim 36
Dependent Claim
18 words
The device of claim 15, wherein a liquid crystalline material is in contact with said conducting polymer directly.
Claim 37
Dependent Claim
22 words
The device of claim 15, wherein a liquid crystalline material is in contact with said conducting polymer through a dielectric passivating layer.
Claim 38
Dependent Claim
26 words
The device of claim 15, wherein said conducting polymer is selected from the group consisting of polyaniline, polypyrrole, and polythiophene, with or without a dopant salt.
Claim 39
Dependent Claim
11 words
A The device of claim 15, wherein said substrate is flexible.
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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) | 2001-10-26 | 2002-04-27 | 2002-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-26 | 2006-04-27 | 2006-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-26 | 2010-04-27 | 2010-10-27 | $7700.00 | Window Closed / Lapsed |