US3743773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image display panel
Assignee: Zenith Electronics LLC
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Filing: 1972-03-31
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Granted: 1973-07-03
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Expires: 1992-03-31
Abstract
Abstract A panel displays an image formed of picture elements distributed in a matrix. At each picture element position is a light-display device such as an electroluminescent cell. A group of mutuallydispersed switches are located at each of the display devices with each switch within a group being responsive to a certain field strength for energizing its associated display device. Video signal is supplied together with position-selection signals. Different ones of the groups of switches are selectively addressed in response to the position-selection signals. Finally, in response to the video signal, each addressed group of the switches is subjected to a field correspondingly dispersed among the switches in an amount proportional to the picture level.
Inventors
- 👤 A Sobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:33
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
157 words
In a panel for displaying an image formed of picture elements distributed over said panel in a matrix, the combination comprising: an effective plurality of light-display devices individually disposed at respective different ones of the positions of said picture elements, each of said devices displaying light in an amount proportional to its level of energization; a respective different group of mutually dispersed switches located at and associated with each of said devices, each switch within said group being responsive to a predetermined field strength for energizing its associated device; means for supplying a video signal composed of amplitude-varying picture information together with position-selection signals; means responsive to said position-selection signals for selectively addressing different ones of said groups of switches; and contrast means responsive to said video signal for subjecting each addressed group of said switches to a nonuniform field correspondingly dispersed among said switches in an amount proportional to the respective level of said picture information.
Claim 2
Dependent Claim
157 words
In a panel for displaying an image formed of picture elements distributed over said panel in a matrix, the combination comprising: an effective plurality of light-display devices individually disposed at respective different ones of the positions of said picture elements, each of said devices displaying light in an amount proportional to its level of energization; a respective different group of mutually dispersed switches located at and associated with each of said devices, each switch within said group being responsive to a predetermined field strength for energizing its associated device; means for supplying a video signal composed of amplitude-varying picture information together with position-selection signals; means responsive to said position-selection signals for selectively addressing different ones of said groups of switches; and contrast means responsive to said video signal for subjecting each addressed group of said switches to a nonuniform field correspondingly dispersed among said switches in an amount proportional to the respective level of said picture information.
Claim 3
Dependent Claim
73 words
A display panel as defined in claim 1 in which said matrix is defined by a plurality of elongated conductive elements laterally spaced apart on one side of said panel and a plurality of elongated conductors spaced apart on the opposite side of said panel and individually orthogonal to said conductive elements, and in which said non-uniform field is developed from one of said conductive elements to and along one of said conductors.
Claim 4
Dependent Claim
46 words
A display panel as defined in claim 1 in which said contrast means includes a layer of electrically insulative material disposed in the path of said field, the distribution of dielectric impedance of said layer contributing to the determination of the dispersal characteristic of said field.
Claim 5
Dependent Claim
26 words
A display panel as defined in claim 1 in which said contrast means includes a layer of resistive material disposed in the path of said field.
Claim 6
Dependent Claim
40 words
A display panel as defined in claim 4 in which said layer exhibits resistance to said field anisotropically, the resistance being higher in the direction of the plane defined by said layer than in the direction normal to said plane.
Claim 7
Dependent Claim
37 words
A display panel as defined in claim 1 which includes a layer of perforated insulating material, and in which individually different ones of said switches are disposed in respective different ones of the perforations in said layer.
Claim 8
Dependent Claim
26 words
A display panel as defined in claim 6 in which each of said switches includes an active field-responsive substance sandwiched between a pair of conductive electrodes.
Claim 9
Dependent Claim
34 words
A display panel as defined in claim 7 in which each of said switches also includes a resistive element disposed in the path of said field through said active substance and said conductive electrodes.
Claim 10
Dependent Claim
55 words
A display panel as defined in claim 1 in which said contrast means includes a narrow electrode on one side of each group and a comparatively wider electrode, in the direction of field dispersal, on the other side of each group, said field dispersing by spreading apart from said one electrode to said other electrode.
Claim 11
Dependent Claim
53 words
A display panel as defined in claim 9 in which said light display devices are disposed on one side of said switches; in which said narrow electrode is on the side of said switches opposite said devices; and in which said wider electrode is on the side of said devices opposite said switches.
Claim 12
Dependent Claim
52 words
A display panel as defined in claim 9 in which said light-display devices are disposed on one side of said switches; in which said wider electrode is on the side of said switches opposite said devices; and in which said narrow electrode is on the side of said devices opposite said switches.
Claim 13
Dependent Claim
42 words
A display panel as defined in claim 11 which further includes: means for sustaining energization of said display devices subsequent to activation by said field, including additional electrodes spaced from said narrow electrode on the side of said devices opposite said switches.
Claim 14
Dependent Claim
36 words
A display panel as defined in claim 11 which further includes: means for sustaining energization of said display devices subsequent to activation by said field, including an additional electrode overlying and insulated from said narrow electrode.
Claim 15
Dependent Claim
25 words
A display panel as defined in claim 1 which further includes means for sustaining energization of said display devices subsequent to activation by said field.
Claim 16
Dependent Claim
58 words
A display panel as defined in claim 1 in which said switches are dispersed over a given area; in which associated portions of each light-display device are dispersed over a predetermined area much larger than said given area; and in which a plurality of conductors individually couple respective ones of said switches to corresponding ones of said portions.
Claim 17
Dependent Claim
14 words
A display panel as defined in claim 1 in which said field is electric.
Claim 18
Dependent Claim
17 words
A display panel as defined in claim 1 in which said field is composed of optical radiation.
Claim 19
Dependent Claim
49 words
A display panel as defined in claim 17 in which said addressing means includes optical-radiation delivery elements; in which said delivery elements include a plurality of graded-opacity output ports individually associated wiTh respective different ones of said switches; and in which said switches are responsive to said optical radiation.
Claim 20
Dependent Claim
46 words
A display panel as defined in claim 17 in which said addressing means includes optical-radiation delivery elements; in which said switches are responsive to said optical radiation; and in which a graded-opacity filter is disposed in the light paths between said delivery elements and said switches.
Claim 21
Dependent Claim
22 words
A display panel as defined in claim 1 in which each group of said switches includes a layer of amorphous semiconductor material.
Claim 22
Dependent Claim
22 words
A display panel as defined in claim 1 which further includes means disposed in said field for modifying the dispersal characteristic thereof.
Claim 23
Dependent Claim
43 words
A display panel as defined in claim 20 in which said modifying means includes an electrically shielding electrode disposed in the path of said field and attenuating the strength of said field applied to the ones of said switches nearest said subjecting means.
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |