US6359673B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet having a layer with different light modulating materials
Assignee: Iris Optronics Co Ltd
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Filing: 1999-06-21
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Granted: 2002-03-19
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Expires: 2019-06-21
Abstract
Abstract A light modulating, electrically responsive sheet including a transparent substrate, and a transparent, electrically conductive layer formed over the transparent substrate. The sheet further includes a light modulating layer including a plurality of electrically responsive light modulating materials dispersed in the light modulating layer and having a plurality of optical states.
Inventors
- 👤 Stanley W. Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:50
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1334; G02F1/137; G02F1/13718
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
A light modulating, electrically responsive sheet which produces images comprising: (a) a transparent substrate; (b) a transparent, electrically conductive layer formed over the transparent substrate; and (c) a unitary light modulating layer deposited over the transparent electrically conductive layer and including a plurality of electrically responsive light modulating materials dispersed in the light modulating layer to provide isolated domains of different materials and each domain having a plurality of optical states whereby the sheet operates on light to produce images.
Claim 2
Dependent Claim
80 words
A light modulating, electrically responsive sheet which produces images comprising: (a) a transparent substrate; (b) a transparent, electrically conductive layer formed over the transparent substrate; and (c) a unitary light modulating layer deposited over the transparent electrically conductive layer and including a plurality of electrically responsive light modulating materials dispersed in the light modulating layer to provide isolated domains of different materials and each domain having a plurality of optical states whereby the sheet operates on light to produce images.
Claim 3
Dependent Claim
81 words
A light modulating, electrically responsive sheet which produces images comprising: (a) a transparent substrate; (b) a transparent, electrically conductive layer formed over the transparent substrate; and (c) a unitary light modulating layer deposited over the transparent electrically conductive layer and including a plurality of electrically responsive cholesteric liquid crystal materials dispersed in the light modulating layer to provide isolated domains of different materials and each domain having a plurality of optical states whereby the sheet operates on light to produce images.
Claim 4
Dependent Claim
81 words
A light modulating, electrically responsive sheet which produces images comprising: (a) a transparent substrate; (b) a transparent, electrically conductive layer formed over the transparent substrate; and (c) a unitary light modulating layer deposited over the transparent electrically conductive layer and including a plurality of electrically responsive cholesteric liquid crystal materials dispersed in the light modulating layer to provide isolated domains of different materials and each domain having a plurality of optical states whereby the sheet operates on light to produce images.
Claim 5
Dependent Claim
40 words
The light modulating, electrically responsive sheet of claim 2 wherein the liquid crystals include right handed and left handed cholesteric materials which are bi-stable and respond to an electric field to change states from a reflective to a transmissive state.
Claim 6
Dependent Claim
41 words
The light modulating, electrically responsive sheet of claim 2 wherein the liquid crystals are selected to create a neutral density sheet having memory properties which is responsive to an electric field to change states from a reflective to a transmissive state.
Claim 7
Dependent Claim
26 words
The light modulating, electrically responsive sheet of claim 4 include red, green and blue reflective cholesteric liquid crystals which reflect red, green and blue light respectively.
Claim 8
Dependent Claim
24 words
The light modulation, electrically responsive sheet of claim 4 include blue and yellow reflective cholesteric liquid crystals which reflect blue and yellow light respectively.
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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) | 2005-03-18 | 2005-09-17 | 2006-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-03-18 | 2009-09-17 | 2010-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-03-18 | 2013-09-17 | 2014-03-19 | $7700.00 | Window Closed / Lapsed |