US4182553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Honeycomb display devices
Assignee: Xerox Corp
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Filing: 1978-01-19
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Granted: 1980-01-08
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Expires: 1998-01-19
Abstract
Abstract An optical display comprised of an array of small movable or deformable elements positioned adjacent a flat plane. Upon the application of a force field to selected ones of the deformable elements, the selected elements change their distance with respect to the flat plane. In the various embodiments disclosed, the change in physical distance is utilized to either modulate incident ambient light or generate light to provide a display having light and dark areas.
Inventors
- 👤 Nicholas K. Sheridon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:40
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/372; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
154 words
An optical display comprising: an array of movable elements, a transparent substrate positioned adjacent said array of movable elements, each movable element occupying an area which corresponds to an area of said display, a deformable material interposed between said transparent substrate and said array, and means for causing selected ones of said movable elements to move towards said substrate, said selected movable elements interacting with the deformable material in an area corresponding to said selected movable element whereby the optical characteristics of the deformable material which has interacted with said movable elements differs from the optical characteristics of the deformable material in the areas corresponding to the non-selected movable elements, the area of the display corresponding to the area occupied by said selected elements differing in contrast from the area of the display corresponding to the area occupied by the non-selected elements when said display is exposed to ambient light through said transparent substrate.
Claim 2
Dependent Claim
154 words
An optical display comprising: an array of movable elements, a transparent substrate positioned adjacent said array of movable elements, each movable element occupying an area which corresponds to an area of said display, a deformable material interposed between said transparent substrate and said array, and means for causing selected ones of said movable elements to move towards said substrate, said selected movable elements interacting with the deformable material in an area corresponding to said selected movable element whereby the optical characteristics of the deformable material which has interacted with said movable elements differs from the optical characteristics of the deformable material in the areas corresponding to the non-selected movable elements, the area of the display corresponding to the area occupied by said selected elements differing in contrast from the area of the display corresponding to the area occupied by the non-selected elements when said display is exposed to ambient light through said transparent substrate.
Claim 3
Dependent Claim
64 words
The optical display as defined in claim 1 wherein said deformable material comprises a colored, translucent material, the area of the display corresponding to the area occupied by said selected elements being the color of said deformable material, the area of the display corresponding to the area occupied by the non-selected elements having a color determined by the surface reflectivity of said non-selected elements.
Claim 4
Dependent Claim
42 words
The optical display as defined in claim 1 wherein said deformable material comprises a liquid crystal the optical characteristic of which is different in the area occupied by the selected movable elements than in the area occupied by the non-selected movable elements.
Claim 5
Dependent Claim
45 words
The optical display as defined in claim 1 wherein said deformable material is of the type such that the polarization of light transmitted therethrough is different in the area occupied by the selected movable elements than in the area occupied by the non-selected movable elements.
Claim 6
Dependent Claim
156 words
An optical display comprising: an array of conductive movable elements, a transparent conductive substrate positioned adjacent said array of movable elements, each movable element occupying an area which corresponds to an area of said display, a material sensitive to an electric field interposed between said substrate and said array, and means for applying an electric field between said conductive movable elements and said substrate and causing said selected movable elements to move towards said transparent conductive substrate causing the electric field in the area corresponding to said selected movable element to increase, the optical characteristics of the sensitive material in the area of said increased electric field differing from the optical characteristics of the material in the area corresponding to the non-selected movable elements, the area of the display corresponding to the area occupied by the non-selected elements differing in contrast from the area of the display corresponding to the area occupied by the non-selected elements.
Claim 7
Dependent Claim
156 words
An optical display comprising: an array of conductive movable elements, a transparent conductive substrate positioned adjacent said array of movable elements, each movable element occupying an area which corresponds to an area of said display, a material sensitive to an electric field interposed between said substrate and said array, and means for applying an electric field between said conductive movable elements and said substrate and causing said selected movable elements to move towards said transparent conductive substrate causing the electric field in the area corresponding to said selected movable element to increase, the optical characteristics of the sensitive material in the area of said increased electric field differing from the optical characteristics of the material in the area corresponding to the non-selected movable elements, the area of the display corresponding to the area occupied by the non-selected elements differing in contrast from the area of the display corresponding to the area occupied by the non-selected elements.
Claim 8
Dependent Claim
31 words
The optical display as defined in claim 5 wherein said material is liquid crystal and said display is exposed to ambient light through said substrate to provide said difference in contrast.
Claim 9
Dependent Claim
41 words
The optical display as defined in claim 5 wherein said material is a low pressure inert gas, a light emitting glow being initiated in the area of said selected movable elements due to the ionization of said gas in said area.
Claim 10
Dependent Claim
53 words
The optical display as defined in claim 5 wherein the birefringence of said material in the area of said selected movable element differs from the birefringence of said material in the area of the non-selected movable elements, said display being exposed to ambient light through said substrate to provide said difference in contrast.
Claim 11
Dependent Claim
41 words
The optical display as defined in claim 5 wherein said selected movable elements contact the conductive surface of said substrate, the material between said selected elements and said conductive surface changing optical characteristic due to heat caused by current passing therethrough.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |