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US5155351A
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Photoelectric transfer device
Assignee: Canon Inc
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Filing: 1991-03-04
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Granted: 1992-10-13
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Expires: 2011-03-04
Abstract
Abstract A photoelectric transfer device comprises a light-absorbing layer which absorbs incident light to generate carriers a multiplying layer which multiplies the carriers and a light-shielding layer provided between the photoabsorbing layer and the multiplying layer.
Inventors
- 👤 Masato Yamanobe
- 👤 Shigetoshi Sugawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:48
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/20; H10F30/21; H10F30/22; H10F30/225; H10F30/2255; H10F39/00; H10F39/10; H10F39/12; H10F39/197; H10F39/80; H10F39/805; H10F39/8057
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
58 words
A photoelectric transfer device comprising a light-absorbing region which absorbs incident light to generate carriers and a multiplying layer region which multiplies said carriers, characterized in that a light-shielding layer is provided between said light-absorbing region and said multiplying layer region, so as to prevent the incident light from impinging on the surface of said multiplying layer region.
Claim 2
Dependent Claim
58 words
A photoelectric transfer device comprising a light-absorbing region which absorbs incident light to generate carriers and a multiplying layer region which multiplies said carriers, characterized in that a light-shielding layer is provided between said light-absorbing region and said multiplying layer region, so as to prevent the incident light from impinging on the surface of said multiplying layer region.
Claim 3
Dependent Claim
45 words
The device according to claim 1, wherein said multiply layer is a layer having a step-back structure in which band gap is varied continuously from the minimum band gap Eg2 to the maximum band gap Eg3 or a laminate of a plurality of the layers.
Claim 4
Dependent Claim
30 words
The device according to claim 1, wherein said multiplying layer is formed by laminating a layer with a higher dielectric constant and a layer with a lower dielectric constant alternately.
Claim 5
Dependent Claim
15 words
The device according to claim 1, wherein said photoabsorbing layer consists of a non-monocrystalline material.
Claim 6
Dependent Claim
15 words
The device according to claim 1, wherein said multiplying layer consists of a non-monocrystalline material.
Claim 7
Dependent Claim
26 words
The device according to claim 1, further comprising a charge injection preventing layer for preventing injection of unnecessary carriers from outside into said photoelectric transfer device.
Claim 8
Dependent Claim
14 words
The device according to claim 1, wherein said light-shielding layer is a metallic material.
Claim 9
Dependent Claim
20 words
The device according to claim 1, wherein said light-shielding layer is a semiconductor material containing impurities at a high concentration.
Claim 10
Dependent Claim
15 words
The device according to claim 1, wherein said light-shielding layer is an electroconductive ceramic material.
Claim 11
Dependent Claim
23 words
The device according to claim 4, wherein the band gap Eg1 of said light-absorbing layer is substantially uniform in the layer thickness direction.
Claim 12
Dependent Claim
22 words
The device according to claim 4, wherein the band gap Eg1 of said light-absorbing layer is nonuniform in the layer thickness direction.
Claim 13
Dependent Claim
108 words
A photoelectric transfer device comprising a light-absorbing region which absorbs incident light to generate carriers and a multiplying layer region which multiplies said carriers, characterized by having: a first electrode; a first charge injection preventing layer for preventing injection of unnecessary carriers from said first electrode into the photoelectric transfer device; said multiplying layer region; a light-shielding layer for preventing the incident light from impinging the surface of said multiplying layer region; said light-absorbing region; a second charge injection preventing impeding layer for preventing injection of unnecessary carriers from a second electrode into the photoelectric transfer device; and said second electrode which is light-transmissive in the order mentioned.
Claim 14
Dependent Claim
108 words
A photoelectric transfer device comprising a light-absorbing region which absorbs incident light to generate carriers and a multiplying layer region which multiplies said carriers, characterized by having: a first electrode; a first charge injection preventing layer for preventing injection of unnecessary carriers from said first electrode into the photoelectric transfer device; said multiplying layer region; a light-shielding layer for preventing the incident light from impinging the surface of said multiplying layer region; said light-absorbing region; a second charge injection preventing impeding layer for preventing injection of unnecessary carriers from a second electrode into the photoelectric transfer device; and said second electrode which is light-transmissive in the order mentioned.
Claim 15
Dependent Claim
45 words
The device according to claim 12, wherein said multiply layer is a layer having a step-back structure in which band gap is varied continuously from the minimum band gap Eg2 to the maximum band gap Eg3 or a laminate of a plurality of the layers.
Claim 16
Dependent Claim
29 words
The device according to claim 12, wherein said multiplying layer is formed by laminating a layer with a higher dielectric constant and a layer with a lower dielectric constant.
Claim 17
Dependent Claim
15 words
The device according to claim 12, wherein said photoabsorbing layer consists of a non-monocrystalline material.
Claim 18
Dependent Claim
16 words
The device according to claim 12, wherein said multiplying layer consists of a non-single crystalline material.
Claim 19
Dependent Claim
14 words
The device according to claim 12, wherein said light-shielding layer is a metallic material.
Claim 20
Dependent Claim
20 words
The device according to claim 12, wherein said light-shielding layer is a semiconductor material containing impurities at a high concentration.
Claim 21
Dependent Claim
15 words
The device according to claim 12, wherein said light-shielding layer is an electroconductive ceramic material.
Claim 22
Dependent Claim
23 words
The device according to claim 15, wherein the band gap Eg1 of said light-absorbing layer is substantially uniform in the layer thickness direction.
Claim 23
Independent Claim
27 words
The device according to any one of claims 12 to 19, wherein the band gap Eg1 of said light-absorbing layer is nonuniform in the layer thickness direction.
Claim 24
Dependent Claim
137 words
A photoelectric device for outputting an electrical signal generated at a plurality of photoelectric transfer portions, comprising: a plurality of photoelectric transfer portions, each having a light-shielding layer between a light-absorbing region which absorbs incident light to generate carriers and a multiplying layer region which multiplies said carriers, said light-shielding layer preventing the incident light from impinging on the surface of the multiplying layer region; a signal output portion having at least one means selected from accumulation means for accumulating an electrical signal generated at said plurality of photoelectric transfer portions, scanning means for scanning an electrical signal generated at said plurality of photoelectric transfer portions and reading means for reading an electrical signal generated at said plurality of photoelectric transfer portions; wherein said plurality of photoelectric transfer portions are electrically connected to said signal output portion.
Claim 25
Dependent Claim
137 words
A photoelectric device for outputting an electrical signal generated at a plurality of photoelectric transfer portions, comprising: a plurality of photoelectric transfer portions, each having a light-shielding layer between a light-absorbing region which absorbs incident light to generate carriers and a multiplying layer region which multiplies said carriers, said light-shielding layer preventing the incident light from impinging on the surface of the multiplying layer region; a signal output portion having at least one means selected from accumulation means for accumulating an electrical signal generated at said plurality of photoelectric transfer portions, scanning means for scanning an electrical signal generated at said plurality of photoelectric transfer portions and reading means for reading an electrical signal generated at said plurality of photoelectric transfer portions; wherein said plurality of photoelectric transfer portions are electrically connected to said signal output portion.
Claim 26
Dependent Claim
45 words
The device according to claim 22, wherein said multiplying layer is a layers having a step-back structure in which band gap is varied continuously from the minimum band gap Eg2 to the maximum band gap Eg3 or a laminate of a plurality of the layers.
Claim 27
Dependent Claim
32 words
The device according to claim 22, wherein said multiplying layer is formed by laminating a layer a layer with a higher dielectric constant and a layer with a lower dielectric constant alternately.
Claim 28
Dependent Claim
15 words
The device according to claim 22, wherein said photoabsorbing layer consists of a non-monocrystalline material.
Claim 29
Dependent Claim
15 words
The device according to claim 22, wherein said multiplying layer consists of a non-monocrystalline material.
Claim 30
Dependent Claim
26 words
The device according to claim 22, further comprising a charge injection preventing layer for preventing injection of unnecessary carriers from outside into said photoelectric transfer device.
Claim 31
Dependent Claim
14 words
The device according to claim 22, wherein said light-shielding layer is a metallic material.
Claim 32
Dependent Claim
20 words
The device according to claim 22, wherein said light-shielding layer is a semiconductor material containing impurities at a high concentration.
Claim 33
Dependent Claim
23 words
The device according to claim 25, wherein the band gap Eg1 of said light-absorbing layer is substantially uniform in the layer thickness direction.
Claim 34
Dependent Claim
22 words
The device according to claim 25, wherein the band gap Eg1 of said light-absorbing layer is nonuniform in the layer thickness direction.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |