EP0444963A2
Expired / Lapsed
EP
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Photoelectric transfer device
Assignee: Canon Inc
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Filing: 1991-03-01
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Granted: —
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Expires: 2011-03-01
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 C/O Canon Kabushiki Kaisha Yamanobe
- 👤 Shigetoshi C/O Canon Kabushiki Kaisha Sugawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 18:19
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: 18
Claim 1
Independent Claim
39 words
A photoelectric transfer device comprising a light-absorbing layer which absorbs incident light to generate carriers and a multiplying layer which multiplies said carriers, characterized in that a light-shielding layer is provided between said light-absorbing layer and said multiplying layer.
Claim 2
Dependent Claim
121 words
A photoelectric transfer 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 layer which absorbs incident light to generate carriers by and a multiplying layer which multiplies said carriers; 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 3
Dependent Claim
29 words
The device according to claim 1 or claim 2, further comprising a charge injection preventing layer for preventing injection of unnecessary carriers from outside into said photoelectric transfer device.
Claim 4
Dependent Claim
110 words
A photoelectric transfer device comprising a light-absorbing layer which absorbs incident light to generate carriers light and a multiplying layer 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; a light-shielding layer for preventing occurrence of variance change in multiplying ratio by penetration of light into said multiplying layer; said light-absorbing layer; 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 5
Independent Claim
50 words
The device according to any one of claims 1 to 4, wherein said multiplying 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 6
Independent Claim
35 words
The device according to any one of claims 1 to 4, 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 7
Independent Claim
19 words
The device according to any one of the preceding claims, wherein said photoabsorbing layer consists of a non-monocrystalline material.
Claim 8
Independent Claim
19 words
The device according to any one of the preceding claims, wherein said multiplying layer consists of a non-monocrystalline material.
Claim 9
Independent Claim
18 words
The device according to any one of the preceding claims, wherein said light-shielding layer is a metallic material.
Claim 10
Independent Claim
25 words
The device according to any one of claims 1 to 8, wherein said light-shielding layer is a semiconductor material containing impurities at a high concentration.
Claim 11
Independent Claim
20 words
The device according to any one of claims 1 to 8, wherein said light-shielding layer is an electroconductive ceramic material.
Claim 12
Independent Claim
27 words
The device according to any one of the preceding claims, wherein the band gap Eg1 of said light-absorbing layer is substantially uniform in the layer thickness direction.
Claim 13
Independent Claim
27 words
The device according to any one of claims 1 to 11, wherein the band gap Eg1 of said light-absorbing layer is non-uniform in the layer thickness direction.
Claim 14
Dependent Claim
23 words
A photoelectric conversion device comprising a signal multiplying region and a light shielding region to shield the signal multiplying region from received light.
Claim 15
Dependent Claim
20 words
A photoelectric conversion device comprising a signal multiplying region and a light absorption region distinct from the signal multiplying region.
Claim 16
Dependent Claim
15 words
A device according to claim 15 in which the light absorption region comprises non-mono-crystalline material.
Claim 17
Dependent Claim
20 words
A photoelectric conversion device having a charge injection inhibiting region between an electrode region and another region of the device.
Claim 18
Dependent Claim
12 words
A photoelectric conversion device having a signal multiplying region comprising non-mono-crystalline material.
References Cited (Backward Citations)
No citation records indexed.
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