CN106940982A - The pixel compensation circuit of monocrystalline silicon CMOS transistor driving display - Google Patents
The pixel compensation circuit of monocrystalline silicon CMOS transistor driving display Download PDFInfo
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- CN106940982A CN106940982A CN201710309781.6A CN201710309781A CN106940982A CN 106940982 A CN106940982 A CN 106940982A CN 201710309781 A CN201710309781 A CN 201710309781A CN 106940982 A CN106940982 A CN 106940982A
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 title claims abstract description 30
- 238000004891 communication Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 35
- 238000000034 method Methods 0.000 description 6
- 230000014509 gene expression Effects 0.000 description 5
- 241000750042 Vini Species 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
Abstract
The present invention discloses a kind of pixel compensation circuit of monocrystalline silicon CMOS transistor driving display, including driving transistor；Electric capacity；Second switch unit；3rd switch element；4th switch element, its first end is used for input reference voltage, the source electrode electrical connection of its second end and driving transistor；5th switch element, its first end is electrically connected with operating voltage positive pole, and the source electrode of its second end and driving transistor is electrically connected；6th switch element, its first end and the second end of the second switch unit are electrically connected, and the source electrode of its second end and driving transistor is electrically connected, and its 3rd end is used for input switch signal；The first and second end connection of second scanning signal control first switch unit disconnects；First scanning signal controls second and third, the connection of first and second end of four switch elements or disconnected, and switching signal controls the first and second end connection of the five, the six switch elements or disconnected.It to be free of threshold voltage in driving current, to reach the uniform purpose of display.
Description
Technical field
The present invention relates to pixel compensation circuit, and in particular to the pixel compensation electricity of monocrystalline silicon CMOS transistor driving display
Road.
Background technology
OLED, which can light, to be driven by the driving transistor DM electric currents produced, because input identical gray scale voltage
When, different threshold voltage vt h can produce different driving currents, cause the inconsistency of driving current, while mobility u
Can be uneven, cause the inconsistency of electric current.
During glass panel TFT driving displays, TFT processing procedure upper threshold voltages Vth uniformity is excessively poor, while threshold voltage
Vth also has drift, and mobility u is also uneven, operating voltage Vdd IR-drop（Electric current is multiplied by pressure drop caused by resistance）Also always
In the presence of so traditional 2T1C circuit brightness uniformities are very poor always.
During monocrystalline silicon wafer mos driving displays, can also there are some slight threshold voltage vt h, mobility u inequality,
Also there is the unmatched problem of electric current, Vdd IR-drop also exists always.Thus, traditional 2T1C circuit homogeneity is bad,
PPI is very low always simultaneously.
Glass panel is limited by cost and processing procedure, is driven using the TFT of single type, such as LTPS uses PTFT, the IGZO to be
NTFT.Monocrystalline silicon wafer technique originally CMOS technology, so generally using CMOS drivings.
For this reason, it may be desirable to seek a kind of technical scheme, at least to mitigate above mentioned problem.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of monocrystalline silicon for the threshold voltage that can eliminate driving transistor
The pixel compensation circuit of CMOS transistor driving display.
In order to solve the above technical problems, the present invention uses following technical proposals.
A kind of pixel compensation circuit of monocrystalline silicon CMOS transistor driving display, including：
Driving transistor, its drain electrode is connected with the anode electrical of luminescent device；
Electric capacity, the grid of its one end and the driving transistor is electrically connected；
First switch unit, its first end is used to input first voltage signal, its second end and the grid of the driving transistor
Electrical connection, its 3rd end is used to input the second scanning signal；
Second switch unit, its first end is used for input data signal, and its second end and the other end of the electric capacity are electrically connected, its
3rd end is used to input the first scanning signal；
3rd switch element, the grid of its first end and the driving transistor is electrically connected, its second end and the driving transistor
Drain electrode electrical connection, its 3rd end be used for input the first scanning signal；
4th switch element, its first end is used for input reference voltage, and its second end and the source electrode of the driving transistor electrically connect
Connect, its 3rd end is used to input the first scanning signal；
5th switch element, its first end is electrically connected with operating voltage positive pole, its second end and the source electrode of the driving transistor
Electrical connection, its 3rd end is used for input switch signal；
6th switch element, its first end and the second end of the second switch unit are electrically connected, and its second end is brilliant with the driving
The source electrode electrical connection of body pipe, its 3rd end is used for input switch signal；
Wherein, the connection of first and second end or disconnection of the second scanning signal control first switch unit；First scanning signal control the
2nd, the connection of first and second end or disconnection of three, four switch elements, switching signal controls first and second end of the five, the six switch elements
Connection disconnects.
The first switch unit includes the first transistor, and the source electrode of the first transistor is used as the of first switch unit
One end, the drain electrode of the first transistor is as the second end of first switch unit, and the grid of the first transistor opens as first
Close the 3rd end of unit.
When the second scanning signal controls the first and second end connection of first switch unit, first voltage signal is input to drive
The driving transistor is opened in the grid of dynamic transistor, control.
When the first scanning signal control second and third, the connection of first and second end of four switch elements and switching signal control the
5th, when first and second end of six switch elements disconnects, reference voltage is input to the source electrode of driving transistor, while data-signal is defeated
Enter the other end to electric capacity.
When the first scanning signal controls second and third, first and second end of four switch elements disconnects and switching signal control the
5th, during the first and second end connection of six switch elements, the other end of electric capacity and the source electrode electrical communication of driving transistor, driving are brilliant
The grid of body pipe is hanging, and any change of driving transistor source voltage can all feed back to the grid of the driving transistor, electric capacity
The voltage difference at two ends will not change.
The second switch unit includes transistor seconds, and the source electrode of the transistor seconds is used as the of second switch unit
One end, the drain electrode of the transistor seconds is as the second end of second switch unit, and the grid of the transistor seconds opens as second
Close the 3rd end of unit.
3rd switch element includes third transistor, and the source electrode of the third transistor is used as the of the 3rd switch element
One end, the drain electrode of the third transistor is as the second end of the 3rd switch element, and the grid of the third transistor opens as the 3rd
Close the 3rd end of unit.
4th switch element includes the 4th transistor, and the source electrode of the 4th transistor is used as the of the 4th switch element
One end, the drain electrode of the 4th transistor is as the second end of the 4th switch element, and the grid of the 4th transistor opens as the 4th
Close the 3rd end of unit.
5th switch element includes the 5th transistor, and the source electrode of the 5th transistor is used as the of the 5th switch element
One end, the drain electrode of the 5th transistor is as the second end of the 5th switch element, and the grid of the 5th transistor opens as the 5th
Close the 3rd end of unit；6th switch element includes the 6th transistor, and the source electrode of the 6th transistor is used as the 6th switch
The first end of unit, the drain electrode of the 6th transistor is used as the second end of the 6th switch element, the grid work of the 6th transistor
For the 3rd end of the 6th switch element.
The present invention has following Advantageous Effects.
Reference voltage is input to the grid of driving transistor using the first scanning signal the 4th switch element of control by the present invention
Pole, the threshold voltage of compensation for drive transistor, while data-signal is input to by the first scanning signal control second switch unit
The other end of electric capacity is A points so that threshold voltage is free of in driving current, to reach the uniform purpose of display.Use benchmark electricity
Pressure provides the grid voltage of driving transistor to eliminate the IR-drop of operating voltage（Electric current is multiplied by pressure drop caused by resistance）.Separately
Outside, the grid voltage for being input to driving transistor is transferred to the anode of luminescent device by the 3rd switch element, luminous to remove
The anode voltage of device, electric capacity can eliminate the change of operating voltage in luminescence process, to reach the purpose for improving display quality.
Brief description of the drawings
The circuit diagram for the pixel compensation circuit that Fig. 1 shows for a kind of monocrystalline silicon CMOS transistor driving of the present invention.
Fig. 2 is the timing diagram of each signal in pixel compensation circuit shown in Fig. 1.
Fig. 3 is the equivalent circuit diagram of T1 periods of the Fig. 1 in timing diagram shown in Fig. 2.
Fig. 4 is the equivalent circuit diagram of T2 periods of the Fig. 1 in timing diagram shown in Fig. 2.
Fig. 5 is the equivalent circuit diagram of T3 periods of the Fig. 1 in timing diagram shown in Fig. 2.
The circuit diagram for the pixel compensation circuit that Fig. 6 shows for another monocrystalline silicon CMOS transistor driving of the present invention.
Fig. 7 is the timing diagram of each signal in pixel compensation circuit shown in Fig. 6.
The circuit diagram for the pixel compensation circuit that Fig. 8 shows for another monocrystalline silicon CMOS transistor driving of the present invention.
Fig. 9 is the timing diagram of each signal in pixel compensation circuit shown in Fig. 8.
The circuit diagram for the pixel compensation circuit that Figure 10 shows for the 4th kind of monocrystalline silicon CMOS transistor driving of the present invention.
Figure 11 is the timing diagram of each signal in pixel compensation circuit shown in Figure 10.
The circuit diagram for the pixel compensation circuit that Figure 12 shows for the 5th kind of monocrystalline silicon CMOS transistor driving of the present invention.
Figure 13 is the timing diagram of each signal in pixel compensation circuit shown in Figure 12.
The circuit diagram for the pixel compensation circuit that Figure 14 shows for the 6th kind of monocrystalline silicon CMOS transistor driving of the present invention.
Figure 15 is the timing diagram of each signal in pixel compensation circuit shown in Figure 14.
Embodiment
For the technical characteristic and effect of the present invention can be described in detail, and it can be realized according to the content of this specification, below
Embodiments of the present invention are further illustrated.
The pixel that Fig. 1 illustrates a kind of monocrystalline silicon CMOS transistor driving display in numerous embodiments of the invention is mended
Repay the embodiment of circuit.The pixel compensation circuit of monocrystalline silicon CMOS transistor driving display, including driving transistor DM, electric capacity
C, second switch unit 2, the 3rd switch element 3, the 4th switch element 4, the 5th switch element 5 and the 6th switch element 6.
Driving transistor DM drain electrode G is connected with luminescent device L anode electrical.
Electric capacity C one end and driving transistor DM grid G are electrically connected.
The first end of second switch unit 2 is used for input data signal, and its second end and the electric capacity C other end electrically connect
Connect, its 3rd end is used to input the first scanning signal scan.Vdt represents the voltage of data-signal.
The first end of 3rd switch element 3 is electrically connected with driving transistor DM grid G, its second end and the driving
Transistor DM drain D electrical connection, its 3rd end is used to input the first scanning signal scan.
The first end of 4th switch element 4 is used for input reference voltage Vref, and its second end is with driving transistor DM's
Source S is electrically connected, and its 3rd end is used to input the first scanning signal scan.
The first end of 5th switch element 5 is electrically connected with operating voltage positive pole, its second end and driving transistor DM
Source S electrical connection, its 3rd end be used for input switch signal Em.
The first end of 6th switch element 6 is electrically connected with the second end of the second switch unit 2, its second end and the drive
Dynamic transistor DM source S electrical connection, its 3rd end is used for input switch signal Em.
Luminescent device L negative electrode is electrically connected with common ground Vss.
First scanning signal scan controls second and third, the connection of first and second end of four switch elements 2,3,4 or disconnected, i.e., and the
Scan signal scan controls second and third, four switch elements 2,3,4 are turned on and off.Switching signal Em controls the five, the six are switched
The first and second end connection of unit 5,6 disconnects, i.e. switching signal Em controls the five, the six switch elements 5,6 to be turned on and off.
In certain embodiments, present invention additionally comprises first switch unit 1, its first end is used to input first voltage letter
Number, its second end and driving transistor DM grid are electrically connected, and its 3rd end is used to input the second scanning signal scan-1；The
The first and second end connection of two scanning signal scan-1 control first switches unit 1 disconnects, i.e. the second scanning signal scan-1 controls
First switch unit 1 processed is turned on and off.Vini represents the voltage of first voltage signal.
In certain embodiments, first switch unit 1 includes the first transistor M1, the first transistor M1 source electrode conduct
The first end of first switch unit 1, the first transistor M1 drain electrode is used as the second end of first switch unit 1, first crystalline substance
Body pipe M1 grid as first switch unit 1 the 3rd end.
In certain embodiments, second switch unit 2 includes transistor seconds M2, transistor seconds M2 source electrode conduct
The first end of second switch unit 2, transistor seconds M2 drain electrode is used as the second end of second switch unit 2, second crystalline substance
Body pipe M2 grid as second switch unit 2 the 3rd end.
In certain embodiments, the 3rd switch element 3 includes third transistor M3, third transistor M3 source electrode conduct
The first end of 3rd switch element 3, third transistor M3 drain electrode is as the second end of the 3rd switch element 3, and the 3rd is brilliant
Body pipe M3 grid as the 3rd switch element 3 the 3rd end.
In certain embodiments, the 4th switch element 4 includes the 4th transistor M4, the 4th transistor M4 source electrode conduct
The first end of 4th switch element 4, the 4th transistor M4 drain electrode is as the second end of the 4th switch element 4, and the 4th is brilliant
Body pipe M4 grid as the 4th switch element 4 the 3rd end.
In certain embodiments, the 5th switch element 5 includes the 5th transistor M5, the 5th transistor M5 source electrode conduct
The first end of 5th switch element 5, the 5th transistor M5 drain electrode is as the second end of the 5th switch element 5, and the 5th is brilliant
Body pipe M5 grid as the 5th switch element 5 the 3rd end.
In certain embodiments, the 6th switch element 6 includes the 6th transistor M6, the 6th transistor M6 source electrode conduct
The first end of 6th switch element 6, the 6th transistor M6 drain electrode is as the second end of the 6th switch element 6, and the 6th is brilliant
Body pipe M6 grid as the 6th switch element 6 the 3rd end.
The embodiment presented hereinafter with reference to Fig. 2-5 couples of Fig. 1 is illustrated.
Fig. 2 is the timing diagram of each signal in pixel compensation circuit shown in Fig. 1.Fig. 3 is Fig. 1 in timing diagram shown in Fig. 2
The equivalent circuit diagram of T1 periods.Fig. 4 is the equivalent circuit diagram of T2 periods of the Fig. 1 in timing diagram shown in Fig. 2.Fig. 5 is Fig. 1
The equivalent circuit diagram of T3 periods in timing diagram shown in Fig. 2.
It it is the Ini stages referring to Fig. 2,3, T1 periods.Second scanning signal scan-1 is high level, first switch unit 1
Open, the grid of first voltage signal input low level to driving transistor DM, open driving transistor DM, i.e. driving transistor
DM is opened, now driving transistor DM grid voltage Vg=Vini.In other words, when the second scanning signal scan-1 controls first
During the first and second end connection of switch element 1, first voltage signal is input to driving transistor DM grid, and driving is opened in control
Transistor DM.
Referring to Fig. 2,4, T2 periods, for the crawl Vth stages.First scanning signal scan be low level, second and third, four
Switch element 2,3,4 first and second end connection i.e. second and third, four switch elements 2,3,4 open；Switching signal Em is high level,
It is that the five, the six switch elements 5,6 are closed that switching signal Em, which controls first and second end of the five, the six switch elements 5,6 to disconnect, now,
Reference voltage V ref is input to driving transistor DM source electrode, while data-signal is input in the electric capacity C other end i.e. Fig. 1
A points.In other words, second and third is controlled as the first scanning signal scan, the connection of first and second end of four switch elements 2,3,4 and switch
When signal Em controls the first and second end disconnection of the five, the six switch elements 5,6, reference voltage V ref is input to driving transistor DM
Source electrode, while data-signal is input to the A points in the electric capacity C other end i.e. Fig. 1.It is understood that T2 periods, second
Scanning signal scan-1 is low level, and first switch unit 1 is closed preferably.
T2 periods, driving transistor DM connects for diode, and Vg=Vref+Vth, VA=Vdt, VA represents A points in figure
Voltage.Luminescent device L anode voltage is equal to Vg, i.e., equal to Vref+Vth, it is seen then that by setting, reference voltage V ref's is big
It is small, Vg sizes can be controlled, the voltage of previous frame luminescent device L anode voltage, now electric capacity C two ends can be removed with Vg
For Vg-VA=Vref+Vth-Vdt.
It is luminescent device L glow phases referring to Fig. 2,5, T3 periods.First scanning signal scan be high level, second,
3rd, four switch elements 2,3,4 first and second end disconnect i.e. second and third, four switch elements 2,3,4 close；Switching signal Em is low
Level, it is that the five, the six switch elements 5,6 are opened that switching signal Em, which controls the first and second end connection of the five, the six switch elements 5,6,
Now, luminescent device L starts to light, the electric capacity C other end and driving transistor DM source electrode electrical communication, driving transistor DM
Grid it is hanging, any change of driving transistor DM source voltages can all feed back to the grid of the driving transistor, electric capacity two
The voltage difference at end will not change.In other words, when the first scanning signal scan control second and third, four switch elements 2,3,4
When first and second end disconnects and switching signal Em controls the first and second end connection of the five, the six switch elements 5,6, electric capacity C's is another
End and driving transistor DM source electrode electrical communication, driving transistor DM grid are hanging, driving transistor DM source voltages
Any change can all feed back to driving transistor DM grid, and the voltage difference at electric capacity C two ends will not change.
T3 periods, driving transistor DM gate source voltage Vgs=Vg-Vs=Vg-VA=Vref+Vth-Vdt.Vs is represented
Driving transistor DM source voltage.
The T3 periods, if driving transistor Dm is operated in saturation region, according to saturation region current formula, flow through luminescent device L
Electric current I1 meet expressions below（1）, so eliminate threshold voltage vt h influence.
I1=K(Vgs-Vth)^2= K(Vref-Vdt)^2 （1）
Wherein, K be saturation region current formula in constant term, behind expression formula similarly.
The T3 periods, if driving transistor Dmos is operated in subthreshold region, according to sub-threshold region current formula, flow through photophore
Part L electric current I2 meets expressions below（2）, so eliminate threshold voltage vt h influence.
I2=I0*(W/L)*e(q*(Vgs-Vth)/kT) = I0*(W/L)*e(Vref-Vdt)/kT)（2）
Wherein, k is Boltzmann constant, behind expression formula similarly.
Above-mentioned expression formula（1）、（2）In, operating voltage Vdd is not contained, and do not capture threshold with operating voltage Vdd
Threshold voltage Vth, so eliminating operating voltage Vdd IR-Drop.
Electric capacity C does not have the path of charge or discharge, even if operating voltage Vdd changes in glow phase, according to charge conservation
Principle, does not consume the loop of electric charge, Vg-Vs keeps constant, therefore the electric current for flowing through luminescent device L remains I1 or I2, lights
Device L keeps this luminance, can thus improve the uniformity of electric current, reaches the uniform of brightness.
The circuit diagram for the pixel compensation circuit that Fig. 6 shows for another monocrystalline silicon CMOS transistor driving of the present invention.Fig. 7
The timing diagram of each signal in the pixel compensation circuit shown in Fig. 6.Fig. 8 drives for another monocrystalline silicon CMOS transistor of the present invention
The circuit diagram of the pixel compensation circuit of display.Fig. 9 is the timing diagram of each signal in pixel compensation circuit shown in Fig. 8.Figure 10 is this
The circuit diagram of the pixel compensation circuit of the 4th kind of monocrystalline silicon CMOS transistor driving display of invention.Figure 11 is pixel shown in Figure 10
The timing diagram of each signal in compensation circuit.Figure 12 mends for the pixel of the 5th kind of monocrystalline silicon CMOS transistor driving display of the present invention
Repay the circuit diagram of circuit.Figure 13 is the timing diagram of each signal in pixel compensation circuit shown in Figure 12.Figure 14 is the 6th of the present invention
Plant the circuit diagram of the pixel compensation circuit of monocrystalline silicon CMOS transistor driving display.Figure 15 is in pixel compensation circuit shown in Figure 14
The timing diagram of each signal.Specific work process is drawn with reference to above-mentioned.
It should be noted that each particular technique feature described in above-mentioned embodiment, in reconcilable feelings
Under condition, it can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention is to various possible groups
Conjunction mode is not described further.
Above with reference to embodiment to the present invention have been described in detail, it is illustrative and not restrictive, is not taking off
From changing and modifications under present general inventive concept, within protection scope of the present invention.
Claims (9)
1. a kind of pixel compensation circuit of monocrystalline silicon CMOS transistor driving display, it is characterised in that including：
Driving transistor, its drain electrode is connected with the anode electrical of luminescent device；
Electric capacity, the grid of its one end and the driving transistor is electrically connected；
First switch unit, its first end is used to input first voltage signal, its second end and the grid of the driving transistor
Electrical connection, its 3rd end is used to input the second scanning signal；
Second switch unit, its first end is used for input data signal, and its second end and the other end of the electric capacity are electrically connected, its
3rd end is used to input the first scanning signal；
3rd switch element, the grid of its first end and the driving transistor is electrically connected, its second end and the driving transistor
Drain electrode electrical connection, its 3rd end be used for input the first scanning signal；
4th switch element, its first end is used for input reference voltage, and its second end and the source electrode of the driving transistor electrically connect
Connect, its 3rd end is used to input the first scanning signal；
5th switch element, its first end is electrically connected with operating voltage positive pole, its second end and the source electrode of the driving transistor
Electrical connection, its 3rd end is used for input switch signal；
6th switch element, its first end and the second end of the second switch unit are electrically connected, and its second end is brilliant with the driving
The source electrode electrical connection of body pipe, its 3rd end is used for input switch signal；
Wherein, the connection of first and second end or disconnection of the second scanning signal control first switch unit；First scanning signal control the
2nd, the connection of first and second end or disconnection of three, four switch elements, switching signal controls first and second end of the five, the six switch elements
Connection disconnects.
2. the pixel compensation circuit of monocrystalline silicon CMOS transistor driving display according to claim 1, it is characterised in that institute
First switch unit is stated including the first transistor, the source electrode of the first transistor is as the first end of first switch unit, and this
The drain electrode of one transistor is as the second end of first switch unit, and the grid of the first transistor is used as the of first switch unit
Three ends.
3. the pixel compensation circuit of monocrystalline silicon CMOS transistor driving display according to claim 1, it is characterised in that when
During the first and second end connection of the second scanning signal control first switch unit, first voltage signal is input to driving transistor
The driving transistor is opened in grid, control.
4. the pixel compensation circuit of monocrystalline silicon CMOS transistor driving display according to claim 1, it is characterised in that when
First scanning signal controls second and third, first and second end of four switch elements is connected and the switch of switching signal control the five, the six is single
When first and second end of member disconnects, reference voltage is input to the source electrode of driving transistor, while data-signal is input to the another of electric capacity
One end.
5. the pixel compensation circuit of monocrystalline silicon CMOS transistor driving display according to claim 1, it is characterised in that when
First scanning signal controls second and third, first and second end of four switch elements disconnects and the switch of switching signal control the five, the six is single
During the first and second end connection of member, the other end of electric capacity and the source electrode electrical communication of driving transistor, the grid of driving transistor hang
Sky, any change of driving transistor source voltage can all feed back to the grid of the driving transistor, the voltage difference at electric capacity two ends
It will not change.
6. the pixel compensation circuit of monocrystalline silicon CMOS transistor driving display according to claim 1, it is characterised in that institute
Second switch unit is stated including transistor seconds, the source electrode of the transistor seconds is as the first end of second switch unit, and this
The drain electrode of two-transistor is as the second end of second switch unit, and the grid of the transistor seconds is used as the of second switch unit
Three ends.
7. the pixel compensation circuit of monocrystalline silicon CMOS transistor driving display according to claim 1, it is characterised in that institute
The 3rd switch element is stated including third transistor, the source electrode of the third transistor is as the first end of the 3rd switch element, and this
The drain electrode of three transistors is as the second end of the 3rd switch element, and the grid of the third transistor is used as the of the 3rd switch element
Three ends.
8. the pixel compensation circuit of monocrystalline silicon CMOS transistor driving display according to claim 1, it is characterised in that institute
The 4th switch element is stated including the 4th transistor, the source electrode of the 4th transistor is as the first end of the 4th switch element, and this
The drain electrode of four transistors is as the second end of the 4th switch element, and the grid of the 4th transistor is used as the of the 4th switch element
Three ends.
9. the pixel compensation circuit of monocrystalline silicon CMOS transistor driving display according to claim 1, it is characterised in that institute
The 5th switch element is stated including the 5th transistor, the source electrode of the 5th transistor is as the first end of the 5th switch element, and this
The drain electrode of five transistors is as the second end of the 5th switch element, and the grid of the 5th transistor is used as the of the 5th switch element
Three ends；6th switch element includes the 6th transistor, and the source electrode of the 6th transistor is used as the first of the 6th switch element
End, the drain electrode of the 6th transistor is as the second end of the 6th switch element, and the grid of the 6th transistor is used as the 6th switch
3rd end of unit.
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| CN201710309781.6A CN106940982A (en) | 2017-05-04 | 2017-05-04 | The pixel compensation circuit of monocrystalline silicon CMOS transistor driving display |
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| CN201710309781.6A CN106940982A (en) | 2017-05-04 | 2017-05-04 | The pixel compensation circuit of monocrystalline silicon CMOS transistor driving display |
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