US3700802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matrix-type image display with light-guide addressing system
Assignee: Zenith Electronics LLC
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Filing: 1970-12-21
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Granted: 1972-10-24
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Expires: 1990-12-21
Abstract
Abstract An image-display panel includes a plurality of light-displaying elements, such as electroluminescent capacitors or liquid crystals, disposed in an array of rows and columns. Associated with each light-displaying element is a photoconductor or other light-responsive device for activating the light-displaying elements. A pair of crossed arrays of fiber-optic light pipes have their crossings in juxtaposition with the photosensitive devices, the light pipes including localized light-emitting apertures near the crossings. A system is included for injecting light into the light pipes in a manner to provide systematic sequential scanning of the photosensitive devices by concurrent light emission from the localized apertures of selected lightconductive elements of both of the arrays. Light emitted from a single light-pipe aperture reduces the resistance of part of the associated photoconductor, but the resistance of the remaining part is sufficient to prevent the light-displaying element from functioning. When light is emitted from both light-pipe apertures associated with the photoconductor at a single display element, the photoconductor resistance is sufficiently reduced that the light-displaying element produces a useful output. In an alternative embodiment, the light pipes are utilized for scanning activation in but one direction, while electrical conductors are used to perform the coordinate scanning function.
Inventors
- 👤 Joseph Markin
- 👤 Alan Sobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:14
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/135; Y; Y10; Y10S; Y10S385/00; Y10S385/901
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
82 words
An image-display device comprising: a display panel including a plurality of light-responsive elements disposed in a predetermined array; and a matrix of light guides in close juxtaposition with said panel arranged in rows and columns so as to define guide intersections adjacent said light-responsive elements, each light guide being provided with a plurality of exit apertures one disposed adjacent each light-responsive element for permitting light to escape therefrom transverse to the axis of the associated light guide to excIte said light-responsive elements.
Claim 2
Dependent Claim
82 words
An image-display device comprising: a display panel including a plurality of light-responsive elements disposed in a predetermined array; and a matrix of light guides in close juxtaposition with said panel arranged in rows and columns so as to define guide intersections adjacent said light-responsive elements, each light guide being provided with a plurality of exit apertures one disposed adjacent each light-responsive element for permitting light to escape therefrom transverse to the axis of the associated light guide to excIte said light-responsive elements.
Claim 3
Dependent Claim
75 words
An image-display device comprising: a display panel including a plurality of light-displaying elements disposed in a predetermined array; means including a corresponding plurality of light-responsive elements for controlling the energization of said light-displaying elements; and means including a matrix of light guides provided with a corresponding plurality of localized light-emitting apertures, each in juxtaposition with one of said light-responsive elements, for selectively irradiating individual ones of said light-responsive elements in accordance with a predetermined pattern.
Claim 4
Dependent Claim
75 words
An image-display device comprising: a display panel including a plurality of light-displaying elements disposed in a predetermined array; means including a corresponding plurality of light-responsive elements for controlling the energization of said light-displaying elements; and means including a matrix of light guides provided with a corresponding plurality of localized light-emitting apertures, each in juxtaposition with one of said light-responsive elements, for selectively irradiating individual ones of said light-responsive elements in accordance with a predetermined pattern.
Claim 5
Dependent Claim
21 words
An image-display device as defined in claim 2, in which said light-responsive elements exhibit significant non-linearity of response to incident illumination.
Claim 6
Dependent Claim
25 words
An image-display device as defined in claim 2, in which said light-responsive elements effectively exhibit storage of the effects of the irradiation from said apertures.
Claim 7
Dependent Claim
38 words
An image-display device as defined in claim 2, in which a power source is included for effecting operation of said light-displaying elements, and said light-responsive elements control the application of power from said source to said light-displaying elements.
Claim 8
Dependent Claim
54 words
An image-display device as defined in claim 2, which further includes a source of composite video signals having picture information and synchronizing information and in which said matrix means responds to said synchronizing information for selecting said light-responsive elements and said light-displaying elements respond to said video signals for displaying light in correspondence therewith.
Claim 9
Dependent Claim
103 words
An image-display device comprising: a matrix of light-displaying elements disposed in a predetermined pattern throughout an image-display field; means, including photosensitive devices respectively associated with said light-displaying elements, responsive to light for activating individual ones of said light-displaying elements; a pair of crossed arrays of light-conductive elements with their crossings respectively in juxtaposition with said photo-sensitive devices, said light-conductive elements being provided with localized light-emitting apertures near said crossings; and means for injecting light into said light-conductive elements to provide selective scanning of said photosensitive devices by concurrent emission of light from localized apertures of selected light-conductive elements of both of said arrays.
Claim 10
Dependent Claim
103 words
An image-display device comprising: a matrix of light-displaying elements disposed in a predetermined pattern throughout an image-display field; means, including photosensitive devices respectively associated with said light-displaying elements, responsive to light for activating individual ones of said light-displaying elements; a pair of crossed arrays of light-conductive elements with their crossings respectively in juxtaposition with said photo-sensitive devices, said light-conductive elements being provided with localized light-emitting apertures near said crossings; and means for injecting light into said light-conductive elements to provide selective scanning of said photosensitive devices by concurrent emission of light from localized apertures of selected light-conductive elements of both of said arrays.
Claim 11
Dependent Claim
37 words
An image-display device as defined in claim 7, in which said photosensitive devices are each separated into a pair of photoconductors individually responsive to light-conductive elements in respective ones of said arrays and electrically connected in series.
Claim 12
Dependent Claim
150 words
An image-display device comprising: a matrix of light-displaying elements disposed in a predetermined pattern throughout an image-display field; means, including photosensitive devices respectively associated with said light-displaying elements, responsive to light for modifying the actuation condition of individual ones of said light-displaying elements; a pair of crossed arrays of scanning-control elements with their crossings respectively in juxtaposition with said photosensitive devices, at least one of said arrays being composed of light-conductive elements provided with localized light-emitting apertures at said crossings; means for selectively injecting light into said light-conductive elements to provide energization of said photosensitive devices by emission of light quanta from said localized apertures; and means for selectively energizing the scanning-control elements of the other of said arrays to provide selective modification of the activation condition of individual ones of said light-displaying elements, said elements individually being activated when said condition is concurrently modified by both of said arrays.
Claim 13
Dependent Claim
150 words
An image-display device comprising: a matrix of light-displaying elements disposed in a predetermined pattern throughout an image-display field; means, including photosensitive devices respectively associated with said light-displaying elements, responsive to light for modifying the actuation condition of individual ones of said light-displaying elements; a pair of crossed arrays of scanning-control elements with their crossings respectively in juxtaposition with said photosensitive devices, at least one of said arrays being composed of light-conductive elements provided with localized light-emitting apertures at said crossings; means for selectively injecting light into said light-conductive elements to provide energization of said photosensitive devices by emission of light quanta from said localized apertures; and means for selectively energizing the scanning-control elements of the other of said arrays to provide selective modification of the activation condition of individual ones of said light-displaying elements, said elements individually being activated when said condition is concurrently modified by both of said arrays.
Claim 14
Dependent Claim
20 words
An image-display device as defined in claim 9, in which said other of said arrays is compOsed of electrically-conductive elements.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |