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US5155607A
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US
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Optical modulation display device and display method using the same
Assignee: Fujifilm Business Innovation Corp
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Filing: 1991-03-15
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Granted: 1992-10-13
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Expires: 2011-03-15
Abstract
Abstract An optical modulation display device is disclosed, comprising a polymer matrix having dispersed therein a liquid crystal composition containing a photochromic compound as a constituting component, or comprising a photochromic polymer matrix having dispersed therein a liquid crystal composition. The display device provides a wide area and flexible display which can be driven without using a matrix addressing system.
Inventors
- 👤 Akinori Inoue
- 👤 Ryojiro Akashi
- 👤 Yutaka Akasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:03
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/52; C09K19/60; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/24; C09K19/54; C09K19/542; C09K19/544; G; G02; G02F; G02F1/00; G02F1/01; G02F1/0126; G02F1/13; G02F1/133; G02F1/1333; G02F1/1334; G02F2202/00; G02F2202/14
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
21 words
An optical modulation display device comprising a polymer matrix in which a liquid crystal composition containing a photochromic compound is dispersed.
Claim 2
Dependent Claim
21 words
An optical modulation display device comprising a polymer matrix in which a liquid crystal composition containing a photochromic compound is dispersed.
Claim 3
Dependent Claim
27 words
An optical modulation display device as claimed in claim 1, wherein said liquid crystal composition is a mixture of a photochromic compound and a liquid crystal compound.
Claim 4
Dependent Claim
24 words
An optical modulation display device as claimed in claim 1, wherein said liquid crystal composition is a composition containing a photochromic liquid crystal compound.
Claim 5
Dependent Claim
20 words
An optical modulation display device as claimed in claim 1, wherein the polymer in the polymer matrix is water soluble.
Claim 6
Dependent Claim
26 words
An optical modulation display device as claimed in claim 4, wherein the polymer is selected from the group consisting of polyvinyl alcohol, cellulose and polyvinyl pyrrolidone.
Claim 7
Dependent Claim
65 words
An optical modulation display device as claimed in claim 1, wherein the liquid crystal composition is comprised of a compound selected from the group consisting of a bisphenol compound, a phenyl benzoate compound, a cyclohexylbenzene compound, an azoxybenzene compound, an azobenzene compound, an azomethine compound, a terphenyl compound, a bephenyl benzoate compound a cyclohexylbiphenyl compound, a phenylpyrimidine compound, a cyclohexylpyrimidine compound, and a cholesterol compound.
Claim 8
Dependent Claim
24 words
An optical modulation display device as claimed in claim 1, wherein the amount of the photochromic compound ranges from 0.01 to 50% by weight.
Claim 9
Dependent Claim
24 words
An optical modulation display device as claimed in claim 7, wherein the amount of the photochromic compound ranges from 1 to 20% by weight.
Claim 10
Dependent Claim
53 words
An optical modulation display device as claimed in claim 1, wherein the photochromic compound is selected from the group consisting of an azobenzene compound, is spiropyran compound, a spirooxazine compound, a triarylmethane compound, a flugide compound, a stilbene compound, an indigo compound, a polycyclic aromatic compound, a viologen compound and a diarylethene compound.
Claim 11
Dependent Claim
18 words
An optical modulation display device comprising a photochromic polymer matrix in which a liquid crystal composition is dispersed.
Claim 12
Dependent Claim
18 words
An optical modulation display device comprising a photochromic polymer matrix in which a liquid crystal composition is dispersed.
Claim 13
Dependent Claim
27 words
An optical modulation display device as claimed in claim 10, wherein said photochromic polymer matrix is a water-soluble polymer to which a photochromic compound is chemically bound.
Claim 14
Dependent Claim
21 words
An optical modulation display device as claimed in claim 10, wherein the polymer of the photochromic polymer matrix is water soluble.
Claim 15
Dependent Claim
26 words
An optical modulation display device as claimed in claim 12, wherein the polymer is selected from the group consisting of polyvinyl alcohol, cellulose and polyvinyl pyrrolidone.
Claim 16
Dependent Claim
65 words
An optical modulation display device as claimed in claim 10, wherein the liquid crystal composition is comprised of a compound selected from the group consisting of a bisphenol compound, a phenyl benzoate compound, a cyclohexylbenzene compound, an azoxybenzene compound, an azobenzene compound, an azomethine compound, a terphenyl compound, a biphenyl benzoate compound, a cyclohexylbiphenyl compound, a phenylpyrimidine compound, a cyclohexylpyrimidine compound, and a cholesterol compound.
Claim 17
Dependent Claim
53 words
An optical modulation display device as claimed in claim 10, wherein the photochromic compound is selected from the group consisting of an azobenzene compound, a spiropyran compound, a spirooxazine compound, a triarylmethane compound, a flugide compound, a stilbene compound, an indigo compound, a polycyclic aromatic compound, a viologen compound and a diarylethene compound.
Claim 18
Independent Claim
37 words
A method for displaying which comprises providing an optical modulation display device which comprises a polymer matrix in which a liquid crystal composition containing a photochromic compound is dispersed, and displaying an image on said display device.
Claim 19
Independent Claim
37 words
A method for displaying which comprises providing an optical modulation display device which comprises a polymer matrix in which a liquid crystal composition containing a photochromic compound is dispersed, and displaying an image on said display device.
Claim 20
Independent Claim
34 words
A method for displaying which comprises providing an optical modulation display device which comprises a photochromic polymer matrix in which a liquid crystal composition is dispersed, and displaying an image on said display device.
Claim 21
Independent Claim
34 words
A method for displaying which comprises providing an optical modulation display device which comprises a photochromic polymer matrix in which a liquid crystal composition is dispersed, and displaying an image on said display device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |