Patent FR633947A successfully refreshed from Google Patents.
Patent US5598004A successfully refreshed from Google Patents.
US5598004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image detector
Assignee: US Philips Corp
•
Filing: 1995-07-19
•
Granted: 1997-01-28
•
Expires: 2015-07-19
Abstract
Abstract An image detector (1, 1a) has an array (2) of sensors (3) formed from layers of material provided on a substrate (4) and separated from a biasing electrode (5) by a radiation conversion layer (6) in which charge carriers are generated in response to incident radiation. Each sensor has a collecting electrode (7a, 7b) for collecting charge carriers generated in the radiation conversion layer (6), a capacitor (c) for storing charge and a switching element (8) having at least first and second electrodes (9 and 10) with one (10) of the first and second electrodes being coupled to the collecting electrode (7a, 7b) for enabling charge carriers stored at the sensor (3) to be read out. Each collecting electrode (7a, 7b) extends laterally beyond the associated switching element (8) on an insulating layer (12a, 12b) provided over the switching elements to form the associated capacitor (c) with an underlying reference electrode (12a, 12b) separated from the collecting electrode (7a, 7b) by the insulating layer (11a, 11b).
Inventors
- 👤 Martin J. Powell
- 👤 John R. Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:57
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/191; H10F39/194
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
147 words
An image detector for sensing radiation, comprising an array of sensors formed from layers of material provided on a substrate and separated from a biasing electrode by a radiation conversion layer in which charge carriers are generated in response to incident radiation, each sensor comprising a collecting electrode for collecting charge carriers generated in the radiation conversion layer, a capacitor for storing charge and a switching element having at least first and second electrodes on a first insulating layer with one of the first and second electrodes being coupled to the collecting electrode for enabling charge carriers stored at the sensor to be read out, each collecting electrode extending laterally beyond the associated switching element on a second insulating layer provided substantially above said first insulating layer to form the associated capacitor with an underlying reference electrode separate from the collecting electrode by the second insulating layer.
Claim 2
Dependent Claim
147 words
An image detector for sensing radiation, comprising an array of sensors formed from layers of material provided on a substrate and separated from a biasing electrode by a radiation conversion layer in which charge carriers are generated in response to incident radiation, each sensor comprising a collecting electrode for collecting charge carriers generated in the radiation conversion layer, a capacitor for storing charge and a switching element having at least first and second electrodes on a first insulating layer with one of the first and second electrodes being coupled to the collecting electrode for enabling charge carriers stored at the sensor to be read out, each collecting electrode extending laterally beyond the associated switching element on a second insulating layer provided substantially above said first insulating layer to form the associated capacitor with an underlying reference electrode separate from the collecting electrode by the second insulating layer.
Claim 3
Dependent Claim
23 words
An image detector according to claim 1, wherein the reference electrode is formed from the same layer of material as the one electrode.
Claim 4
Dependent Claim
39 words
An image detector according to claim 2, wherein each collecting electrode is provided on the second insulating layer and makes contact with the associated one electrode via an aperture formed through the second insulating layer over the one electrode.
Claim 5
Dependent Claim
16 words
An image detector according to claim 2, wherein each switching element comprises a thin film transistor.
Claim 6
Dependent Claim
26 words
An image detector according to claim 4, wherein each thin film transistor comprises a staggered thin film transistor having its gate electrode closest to the substrate.
Claim 7
Dependent Claim
20 words
An image detector according to claim 2, wherein the reference electrodes are coupled together for connection to a common potential.
Claim 8
Dependent Claim
19 words
An image detector according to claim 2, wherein the switching elements are arranged in a two dimensional matrix array.
Claim 9
Dependent Claim
49 words
An image detector according to claim 1, wherein, for each sensor, the reference electrode is provided on a further insulating layer which is thick in comparison to the layers forming the sensors and which extends over the switching elements, the second insulating layer being provided over the reference electrode.
Claim 10
Dependent Claim
39 words
An image detector according to claim 8, wherein each collecting electrode is provided on the second insulating layer and makes contact with the associated one electrode via an aperture formed through the second insulating layer over the one electrode.
Claim 11
Dependent Claim
16 words
An image detector according to claim 8, wherein each switching element comprises a thin film transistor.
Claim 12
Dependent Claim
26 words
An image detector according to claim 10, wherein each thin film transistor comprises a staggered thin film transistor having its gate electrode closest to the substrate.
Claim 13
Dependent Claim
20 words
An image detector according to claim 8, wherein the reference electrodes are coupled together for connection to a common potential.
Claim 14
Dependent Claim
19 words
An image detector according to claim 8, wherein the switching elements are arranged in a two dimensional matrix array.
Claim 15
Dependent Claim
39 words
An image detector according to claim 1, wherein each collecting electrode is provided on the second insulating layer and makes contact with the associated one electrode via an aperture formed through the second insulating layer over the one electrode.
Claim 16
Dependent Claim
16 words
An image detector according to claim 14, wherein each switching element comprises a thin film transistor.
Claim 17
Dependent Claim
20 words
An image detector according to claim 14, wherein the reference electrodes are coupled together for connection to a common potential.
Claim 18
Dependent Claim
16 words
An image detector according to claim 1, wherein each switching element comprises a thin film transistor.
Claim 19
Dependent Claim
26 words
An image detector according to claim 17, wherein each thin film transistor comprises a staggered thin film transistor having its gate electrode closest to the substrate.
Claim 20
Dependent Claim
20 words
An image detector according to claim 1, wherein the reference electrodes are coupled together for connection to a common potential.
Claim 21
Dependent Claim
19 words
An image detector according to claim 1, wherein the switching elements are arranged in a two dimensional matrix array.
References Cited (Backward Citations)
EP0444720A1
Cited
US5132541A
Cited
EP0588397A2
Cited
US5396072A
Cited
US5319206A
Cited
US5498880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |