CN104767944B - The multi-tap EMCCD amplifying circuits of output-consistence can be improved - Google Patents
The multi-tap EMCCD amplifying circuits of output-consistence can be improved Download PDFInfo
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- CN104767944B CN104767944B CN201510174290.6A CN201510174290A CN104767944B CN 104767944 B CN104767944 B CN 104767944B CN 201510174290 A CN201510174290 A CN 201510174290A CN 104767944 B CN104767944 B CN 104767944B
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Abstract
A kind of multi-tap EMCCD amplifying circuits that can improve output-consistence, including multiple tap amplifiers, with having drain electrode, reset leakage, resetting gate and amplifier, its innovation is each tap amplifier：The drain electrode of all tap amplifiers passes through the mutual short circuit of lead by the mutual short circuit of lead, the reset leakage of all tap amplifiers, and the resetting gate of all tap amplifiers passes through lead mutual short circuit the amplifier of all tap amplifiers by the mutual short circuit of lead.The method have the benefit that：The uniformity of multi-tap EMCCD tap outputs can be significantly improved, improves image quality.
Description
Technical field
The present invention relates to a kind of EMCCD amplifying circuits, more particularly to a kind of multi-tap EMCCD that can improve output-consistence
Amplifying circuit.
Background technology
Phase earlier 1990s J.Hynecek proposes the theory that electron multiplication is used for CCD, in imaging sensor
Inside is directly realized by the amplification of signal electron, and subsequent EMCCD Patents and product occur in succession.EMCCD appearance is true
All solid state micro-opto image device in positive meaning, compared with traditional low-light level imaging device ICCD, EBCCD, EMCCD need not be through
The transfer processes such as electrical-optical, optical-electronic are crossed, imaging chain is simple, because EMCCD has low small volume, noise, high sensitivity, detection
The advantages such as ability is strong, make it receive much concern and be developed rapidly.
EMCCD technologies be also referred to as " gain on piece " technology, it be traditional CCD horizontal register and sense amplifier it
Between increase by a string of doubling registers, by doubling register apply high drive, signal charge occur " ionization by collision ", so as to
The amplification to signal electron is realized, gain is up to up to ten thousand times.EMCCD is before signal electron reaches sense amplifier to signal electricity
Son is amplified, it is suppressed that is read limitation of the noise to detectivity, is greatly improved the detectivity of device.
With common CCD similarly, EMCCD can also be by increasing tap（That is tap amplifier）Quantity reads speed to improve
Degree；But with the increase of number of taps, the inconsistency of each tap output will cause image quality to decline.
The content of the invention
The problem of in background technology, the present invention propose a kind of multi-tap EMCCD that can improve output-consistence and put
Big circuit, including multiple tap amplifiers, each tap amplifier, which has, to drain, with resetting leakage, resetting gate and amplifier, its
Innovation is：The drain electrode of all tap amplifiers passes through lead by the mutual short circuit of lead, the reset leakage of all tap amplifiers
Mutual short circuit, the resetting gate of all tap amplifiers are passed through the amplifier of all tap amplifiers by the mutual short circuit of lead
The mutual short circuit of lead.
The principle of aforementioned schemes is：It is general in the prior art to use more set power circuits to be multiple for multi-tap EMCCD
Tap amplifier is powered respectively, due to each power level for being provided to each tap amplifier of set power circuit exist it is inconsistent,
This results in the output of each tap amplifier there is also inconsistent, image quality is influenceed very big；Using the solution of the present invention
Afterwards, it is shorted together respectively drain electrode, reset leakage, resetting gate and the amplifier of each tap amplifier, makes to be loaded into each take out
Power level uniformity on head amplifier is improved, and can significantly improve the uniformity of each tap amplifier output.
Preferably, the quantity of the tap amplifier is 2 or more than 2.
Preferably, the tap amplifier uses two-stage source follow-up amplifier or three-level source follow-up amplifier.
Aforementioned schemes are depended on, when making power circuit, a set of power circuit can be only made, be amplified by multiple taps
Device is multiplexed this set of power circuit, is simplified circuit structure.
The method have the benefit that：The uniformity of multi-tap EMCCD tap outputs can be significantly improved, improves imaging
Quality.
Brief description of the drawings
Fig. 1, prior art principle schematic；
Fig. 2, the present invention principle schematic；
Fig. 3, embodiment of the present invention one（Tap amplifier uses two-stage source follow-up amplifier, tap amplifier in figure
Quantity is 2）；
Fig. 4, embodiment of the present invention two（Tap amplifier uses three-level source follow-up amplifier, tap amplifier in figure
Quantity is 2）；
Title in figure corresponding to each mark is respectively：Photosensitive area 1, memory block 2, horizontal transfer area 3, multiplication region 4, take out
Head amplifier 5, output node 6, drain electrode VDD, reset leakage VRD, resetting gate VRG, amplifier ground VSS, output grid VOG, tap amplifier
Output end VOS。
Embodiment
A kind of multi-tap EMCCD amplifying circuits that can improve output-consistence, including multiple tap amplifiers, each tap
Amplifier all has drain electrode VDD, reset leakage VRD, resetting gate VRGV with amplifierSS, its innovation is：All tap amplifiers
Drain VDDBy the mutual short circuit of lead, the reset leakage V of all tap amplifiersRDBy the mutual short circuit of lead, all tap amplifications
The resetting gate V of deviceRGBy the mutual short circuit of lead, the amplifier of all tap amplifiers ground VSSPass through the mutual short circuit of lead.
Further, the quantity of the tap amplifier is 2 or more than 2.
Further, the tap amplifier uses two-stage source follow-up amplifier or three-level source follow-up amplifier.
Further, the multiple tap amplifier is multiplexed a set of power circuit.
Present invention can apply to just according to frame transfer EMCCD, back-illuminated frame transfer EMCCD, frame interior lines EMCCD, visible ray
EMCCD, X ray EMCCD etc..
Those skilled in the art shall yet further be noted that in process procedure, should try one's best and accomplish the structure for making each tap amplifier
And technique making parameter is identical, such as pipe type（Exhaust pipe or reinforced pipe）, breadth length ratio, threshold value implantation concentration, LDD implantation concentrations
Deng.
Claims (3)
1. a kind of multi-tap EMCCD amplifying circuits that can improve output-consistence, including multiple tap amplifiers, each tap are put
Big device all has drain electrode (VDD), reset leakage (VRD), resetting gate (VRG) and amplifier ground (VSS), it is characterised in that：All taps are put
Drain electrode (the V of big deviceDD) pass through the mutual short circuit of lead, the reset leakage (V of all tap amplifiersRD) pass through the mutual short circuit of lead, institute
There is the resetting gate (V of tap amplifierRG) by the mutual short circuit of lead, the amplifier of all tap amplifiers ground (VSS) by drawing
The mutual short circuit of line；The multiple tap amplifier is multiplexed a set of power circuit.
2. the multi-tap EMCCD amplifying circuits according to claim 1 that output-consistence can be improved, it is characterised in that：Institute
The quantity for stating tap amplifier is 2 or more than 2.
3. the multi-tap EMCCD amplifying circuits according to claim 1 that output-consistence can be improved, it is characterised in that：Institute
State tap amplifier and use two-stage source follow-up amplifier or three-level source follow-up amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510174290.6A CN104767944B (en) | 2015-04-14 | 2015-04-14 | The multi-tap EMCCD amplifying circuits of output-consistence can be improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510174290.6A CN104767944B (en) | 2015-04-14 | 2015-04-14 | The multi-tap EMCCD amplifying circuits of output-consistence can be improved |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104767944A CN104767944A (en) | 2015-07-08 |
| CN104767944B true CN104767944B (en) | 2017-12-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004172267A (en) * | 2002-11-19 | 2004-06-17 | Matsushita Electric Ind Co Ltd | Solid-state imaging device |
| JP2005167273A (en) * | 2005-01-19 | 2005-06-23 | Matsushita Electric Ind Co Ltd | Solid-state image sensor |
| CN101119446A (en) * | 2006-08-01 | 2008-02-06 | 松下电器产业株式会社 | Solid state imaging device and imaging device |
| CN102324893A (en) * | 2011-06-16 | 2012-01-18 | 中国电子科技集团公司第四十四研究所 | Amplifier structure for improving output consistency of CCDs (Charge Coupled Devices) |
| CN103219345A (en) * | 2012-01-18 | 2013-07-24 | 佳能株式会社 | Image pickup apparatus and image pickup system |
-
2015
- 2015-04-14 CN CN201510174290.6A patent/CN104767944B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004172267A (en) * | 2002-11-19 | 2004-06-17 | Matsushita Electric Ind Co Ltd | Solid-state imaging device |
| JP2005167273A (en) * | 2005-01-19 | 2005-06-23 | Matsushita Electric Ind Co Ltd | Solid-state image sensor |
| CN101119446A (en) * | 2006-08-01 | 2008-02-06 | 松下电器产业株式会社 | Solid state imaging device and imaging device |
| CN102324893A (en) * | 2011-06-16 | 2012-01-18 | 中国电子科技集团公司第四十四研究所 | Amplifier structure for improving output consistency of CCDs (Charge Coupled Devices) |
| CN103219345A (en) * | 2012-01-18 | 2013-07-24 | 佳能株式会社 | Image pickup apparatus and image pickup system |
Non-Patent Citations (1)
| Title |
|---|
| CCD片上放大器直流输出电压影响因素分析;韩恒利，汪凌，唐利等;《半导体光电》;20131215;第34卷(第6期);第935-938页 * |
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| CN104767944A (en) | 2015-07-08 |
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