CN106057126A - Pixel circuit and drive method thereof - Google Patents
Pixel circuit and drive method thereof Download PDFInfo
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- CN106057126A CN106057126A CN201610361233.3A CN201610361233A CN106057126A CN 106057126 A CN106057126 A CN 106057126A CN 201610361233 A CN201610361233 A CN 201610361233A CN 106057126 A CN106057126 A CN 106057126A
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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
Abstract
The invention describes a pixel circuit and a drive method thereof. The pixel circuit comprises initialization modules, a data write-in module, a storage module, a threshold compensation module, a drive module, a light-emitting module and at least two initialization signal lines; and, in the at least two initialization signal lines, the first initialization signal line is connected with the corresponding initialization module and used to input a signal on the first initialization signal line to the storage module, and the second initialization signal line is connected with the corresponding initialization module and used to input a signal on the second initialization signal line to the drive module and the light-emitting module. A drive tube threshold voltage can be compensated, and display problems such as a display abnormity caused by a threshold drift and crosstalk generated by wiring parasitic capacitance are prevented.
Description
Technical field
The present invention relates to display field, particularly relate to a kind of image element circuit and driving method thereof.
Background technology
In recent years, people develop various lightweight and that size is little flat panel display equipment to replace cathode ray tube.This
The example of a little flat panel display equipments includes display panels, plasma display and electroluminescence display panel.Wherein,
Electroluminescence display panel realizes the normal display of display floater by the electroluminescent device in display floater, according to luminescent layer
The difference of material, electroluminescent device is divided into inorganic light-emitting and organic light emission two class, because organic luminescent device has high response
Speed, high-luminous-efficiency, strong brightness and wide viewing angle and by industry be referred to as a new generation Display Technique.
Organic luminescent device includes Organic Light Emitting Diode.As it is shown in figure 1, Organic Light Emitting Diode 10 include anode 101,
Negative electrode 102 and between organic compound layer 103a, 103b, 103c, 103d and 103e.Wherein 103a, 103b, 103c, 103d
Hole injection layer, hole transmission layer, luminescent layer, electron transfer layer and electron injecting layer is represented respectively with 103e.When driving electricity
When pressure is applied on anode 101 and negative electrode 102, the hole in hole injection layer 103a will arrive through hole transmission layer 103b and send out
Photosphere 103c, meanwhile, the electronics in electron injecting layer 103e will arrive luminescent layer 103c through electron transfer layer 103d.Arrive and send out
Electronics and the hole of photosphere 103c are the most compound, form exciton, and thus, luminescent layer 103c produces visible ray.
Fig. 2 is the image element circuit figure of a kind of typical OLED in prior art.As in figure 2 it is shown, organic
Each pixel cell in optical display unit include data wire DL intersected with each other and scan line SL, the first film transistor M1,
Two thin film transistor (TFT) M2, storage electric capacity CstAnd Organic Light Emitting Diode EL.Wherein, the first film transistor M1 and the second thin film
Transistor M2 is PMOS.The first transistor M1 turns in response to the scanning signal of scan line SL, and on data wire DL
Data signal VdataGrid and the storage electric capacity C of transistor seconds M2 it is applied to through the first transistor M1 of conductingstOn, second is brilliant
Body pipe M2 is according to voltage difference V between grid and source electrodegsControl to flow to the electric current of Organic Light Emitting Diode EL.Therefore, first is brilliant
Body pipe M1 is referred to as switching transistor, and transistor seconds M2 is referred to as driving transistor.
The luminosity of Organic Light Emitting Diode and the current in proportion flowing to Organic Light Emitting Diode, such as formula (1) institute
Show:
I=k (Vdata-Vdd-Vth)2 (1)
Wherein, k represents the constant determined by the mobility and parasitic capacitance driving transistor M2, VdataRepresent data wire DL
On data voltage, VddRepresent the voltage that the first voltage source PVDD provides, VthFor driving the threshold voltage of transistor M2.Such as public affairs
Shown in formula (1), the threshold voltage V driving electric current and driving transistor of Organic Light Emitting DiodethClosely related, and different pixels
Larger difference is there is because of its factor such as duty, processing technology between the driving transistor of unit, thus on display floater not
The phenomenon that picture is uneven is produced because of the drift of drive transistor threshold voltage with existing between pixel.
Summary of the invention
In view of this, on the one hand, the present invention provides a kind of image element circuit, including: initialization module, Data write. module,
Memory module, threshold value compensation module and driving module and light emitting module, at least two initializing signal lines；Described at least two
In bar initializing signal line, the first initializing signal line is connected with described initialization module, for initializing letter by described first
Signal input on number line is to described memory module；Described second initializing signal line is connected with described initialization module, is used for
Signal on described second initializing signal line is inputted to described driving module and described light emitting module.
On the other hand, the present invention provides the driving method driving above-mentioned image element circuit, specifically includes: the first stage, to institute
State the first scan line the first level signal to be provided, provides second electrical level letter to described second scan line and described light emitting control line
Number, the grid of described 6th transistor is initialized；Second stage, to described first scan line, described second scan line
Described first level signal is provided, provides described second electrical level signal to described light emitting control line, write data into and be stored in
In described first electric capacity；Phase III, provide described second electrical level signal to described first scan line, described light emitting control line,
There is provided described first level signal to described second scan line, the threshold voltage of described 6th transistor is captured；4th
In the stage, provide described second electrical level signal to described first scan line, described second scan line, provide to described first scan line
Described first level signal, described organic light-emitting diode.
Compared with prior art, the present invention at least has one of following prominent advantage:
The image element circuit that the present invention provides has the function of compensation for drive transistor threshold drift；
The image element circuit that the present invention provides is by arranging different initializing signal lines, it is possible to improves in display floater and shows
Uneven problem；
The image element circuit that the present invention provides, can reset to the anode of Organic Light Emitting Diode, improve display floater
Steal bright problem；
The driving method driving image element circuit that the present invention provides, the signal no overlap of scan line and light emitting control line, fall
The low power consumption of image element circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of Organic Light Emitting Diode；
Fig. 2 is the image element circuit figure of a kind of typical OLED in prior art；
Fig. 3 is a kind of image element circuit figure that the embodiment of the present invention provides；
Fig. 4 is a kind of organic electroluminescence display panel structural representation that the present invention provides；
Fig. 5 is a kind of image element circuit figure that the embodiment of the present invention provides；
Fig. 6 is the driving method of a kind of driving image element circuit as shown in Figure 5 that the embodiment of the present invention provides.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with accompanying drawing and enforcement
The present invention will be further described for example.
It should be noted that elaborate detail in the following description so that fully understanding the present invention.But this
Bright can be different from alternate manner described here implement with multiple, those skilled in the art can be in the present invention
Similar popularization is done in the case of culvert.Therefore the present invention is not limited by following public specific embodiment.
Refer to Fig. 3, Fig. 3 is a kind of image element circuit that the embodiment of the present invention provides.Image element circuit 200 includes that first is initial
Change module the 210, second initialization module 220, Data write. module 230, memory module 240, threshold value compensation module 250, drive
Module 260 and light emitting module 270, the first initializing signal line 211 and the second initializing signal line 221；Wherein, first initialize
Module 210 is connected with the first initializing signal line 211；Second initialization module 220 is connected with the second initializing signal line 221.
As it is shown on figure 3, image element circuit 200 also include light emitting control line EMIT, the first scan line S1, the second scan line S2 and
Data wire DL；Wherein, the first initialization module 210 is also connected with memory module 240, light emitting control line EMIT,
Second initialization module 220 also with drive module 260, light emitting module the 270, first scan line S1, the second scan line
S2 connects,
Data write. module 230 connects memory module the 240, second scan line S2 and data wire DL respectively, for according to the
Scanning signal in two scan lines S2 controls whether to input to memory module 240 data signal on data wire DL,
Memory module 240 connects first initialization module the 210, second initialization module 220 and Data write. module respectively
230, for stablizing first initialization module the 210, second initialization module 220 and the signal of Data write. module 230 generation,
Threshold value compensation module 250 connects driving module the 260, second scan line S2 respectively, for according to the second scan line S2
On scanning signal compensation drive module 260 threshold voltage,
Drive module 260 to connect compensating module 250, light emitting module the 270, first voltage end PVDD respectively, send out for driving
Optical module 270 is luminous,
Light emitting module 270 connects light emitting control line EMIT respectively, drives module the 260, second voltage end PVEE, for basis
Control signal on light emitting control line EMIT is luminous.
The embodiment of the present invention arranges first initializing signal line the 211, second initializing signal line 221 and connects respectively at the beginning of first
Beginningization module the 210, second initialization module 220.So design is advantageous in that, reduces the load of initializing signal line and posts
Raw electric capacity, it is to avoid the problem that picture produces crosstalk.
Fig. 4 is a kind of organic electroluminescence display panel structural representation that the present invention provides.As shown in Figure 4, organic light emission shows
Showing that panel includes a first initializing signal line 211 and a second initializing signal line 221, wherein, first initializes letter
Number line 211 is connected with each pixel cell on display floater, the second initializing signal line 221 and each picture on display floater
Element unit connects.In order to avoid the crossing elimination between the first initializing signal line 211 and the second initializing signal line 221 produces
Short circuit problem, the present invention the first initializing signal line 211 and the second initializing signal line 221 lay respectively at different film layer.
It should be noted that first initializing signal line the 211, second initializing signal line 221 can be connected to same
Initialization voltage source 201, as shown in Figure 3.Alternatively, first initializing signal line the 211, second initializing signal line 221 is respectively
It is connected to different initialization voltage source.
It should be noted that on voltage signal on the first initializing signal line 211 and the second initializing signal line 221
Voltage signal is identical, it is also possible to different.
It should be noted that on voltage signal on the first initializing signal line 211 and the second initializing signal line 221
Voltage signal is depending on driving module 260.When driving module 260 just conducting under the control of high level signal, first is initial
Change the voltage signal on holding wire 211 and the voltage signal on the second initializing signal line 221 is high level signal；When driving mould
When block 260 just turns under the control of low level signal, the voltage signal and second on the first initializing signal line 211 initializes
Voltage signal on holding wire 221 is low level signal.
Fig. 5 is a kind of image element circuit figure that the embodiment of the present invention provides.As it is shown in figure 5, the first initialization module 210 includes
The first transistor T1, the second initialization module 220 includes transistor seconds T2 and third transistor T3, Data write. module 230
Including the 4th transistor T4, memory module 240 includes the first electric capacity C1, and compensating module 250 includes the 5th transistor T5, drives mould
Block 260 includes that the 6th transistor T6, light emitting module 270 include the 7th transistor T7 and Organic Light Emitting Diode D；Wherein, first
The grid of transistor T1 is connected with light emitting control line EMIT, the first pole and the first initializing signal line Lref1Connect, the second pole with
First end of the first electric capacity C1 connects；The grid of transistor seconds T2 and the first scan line S1 connect, and the first pole is initial with second
Change holding wire Lref2Connecting, the second pole is connected with second end of the first electric capacity C1；The grid of third transistor T3 and the second scanning
Holding wire S2 connects, the first pole and the second initializing signal line Lref2Connecting, the second pole connects with the anode of Organic Light Emitting Diode D
Connect；The grid of the 4th transistor T4 and the second scan signal line S2 connect, and the first pole is connected with data wire DL, the second pole and first
First end of electric capacity C1 connects；The grid of the 5th transistor T5 and the second scan signal line S2 connect, the first pole and the 6th crystal
Second pole of pipe T6 connects, and the second pole is connected with second end of the first electric capacity C1；The grid of the 6th transistor T6 and the first electric capacity
Second end of C1 connects, and the first pole is connected with the first voltage end PVDD；The grid of the 7th transistor T7 and light emitting control line EMIT
Connecting, the first pole is connected with second pole of the 6th transistor T6, and the second pole is connected with the anode of Organic Light Emitting Diode D；Organic
The negative electrode of light emitting diode D and the second voltage end PVEE connect.
Fig. 6 is the driving method of a kind of driving image element circuit as shown in Figure 5 that the embodiment of the present invention provides.Driving method
Including first stage P1, provide the first level signal to the first scan line S1, to the second scan line S2 and described light emitting control line
Second electrical level signal is provided, the grid of the first transistor T1 is initialized；Second stage P2, to the first scan line S1,
Two scan lines S2 provide the first level signal, provide second electrical level signal to light emitting control line EMIT, write data into and store
In the first electric capacity C1；Phase III P3, provides second electrical level signal to the first scan line S1, light emitting control line EMIT, to
Two scan lines S2 provide the first level signal, capture the threshold voltage of the first transistor T1；Fourth stage P4, to first
Scan line S1, the second scan line S2 provide second electrical level signal, provide the first level signal, organic light emission to the first scan line S1
Diode D is luminous.
In image element circuit shown in Fig. 5, the first transistor T1 to the 7th transistor T7 is PMOS, in corresponding diagram 6
One level signal is low level signal, and second electrical level signal is high level signal.
As it has been described above, the first transistor T1 to the 7th transistor T7 is PMOS in the image element circuit shown in Fig. 5, because of
This, the first initializing signal line Lref1With the second initializing signal line Lref2On voltage signal be low level signal.
It should be noted that the type of the first transistor T1 to the 7th transistor T7 is not construed as limiting by the present invention, first is brilliant
Body pipe T1 to the 7th transistor T7 can also be NMOS tube, when the first transistor T1 to the 7th transistor T7 is NMOS tube
Time, the first level signal is high level signal, and second electrical level signal is low level signal；Or the first transistor T1 to the 7th is brilliant
Body pipe T7 existing PMOS can also have again NMOS tube.
The operation principle of embodiment of the present invention image element circuit is illustrated below in conjunction with Fig. 5 and Fig. 6.
First stage P1, under the control of the first scan signal line S1 of transmission low level signal, transistor seconds T2 leads
Logical, initialization voltage VrefThrough the second initializing signal line Lref2, conducting transistor seconds T2 transmission to the of the first electric capacity C1
Two end B.Owing to the grid of the 6th transistor T6 connects the second end B of the first electric capacity C1, therefore, at P1 moment, the first transistor
The grid voltage of T1 is Vref, i.e. complete grid at this moment the 6th transistor T6 and initialize.
Second stage P2, in transmission the first scan signal line S1 of low level signal, the control of the second scan signal line S2
Under, transistor seconds T2, third transistor T3, the 4th transistor T4, the 5th transistor T5 conducting, initialization voltage VrefThrough
Two initializing signal line Lref2, conducting transistor seconds T2 transmission to the second end B of the first electric capacity C1；Meanwhile, data signal
Through data wire DL, the first end A of the 4th transistor T4 transmission to the first electric capacity C1 of conducting.Therefore, in this moment, the first electric capacity
The voltage of the first end A of C1 is Vdata, the voltage of the second end B is Vref, write data into and be stored in the first electric capacity C1.
Phase III P3, under the control of the second scan line S2 of transmission low level signal, third transistor T3, the 4th crystalline substance
Body pipe T4 and the 5th transistor T5 conducting.Owing to the grid of the 6th transistor T6 connects the second end B of the first electric capacity C1, and upper
The voltage of the second end B of one stage P2 the first electric capacity C1 is Vref, therefore in the initial 6th transistor T6 conducting in this stage.The
The first voltage pvdd that one voltage end PVDD provides is brilliant to the 6th via the 6th transistor T6, the 5th transistor T5 transmission of conducting
The grid of body pipe T6, when grid voltage and the first voltage pvdd of the 6th transistor T6 differ a VthTime the 6th transistor T6 cut
Only, wherein, VthIt it is the threshold voltage of the 6th transistor T6.At phase III P3, complete the threshold voltage to the first transistor T1
Capture.
Fourth stage P4, under the control of the light emitting control line EMIT of transmission low level signal, the first transistor T1, the 7th
Transistor T7 turns on.Initialization voltage VrefThe first end A to the first electric capacity C1 is transmitted via the first transistor T1 of conducting.?
In this moment, the first end A of the first electric capacity C1 was become Vref from the Vdata in a upper moment, according to capacitance coupling effect, and the first electric capacity
The second end B of C1 is by (the pvdd+V in a upper momentth) become ((pvdd+Vth)+(Vdata-Vref)).Therefore, in this moment the 6th
The grid voltage of transistor T6 and the poorest V of source voltagegs=Vth+(Vdata-Vref), it is seen that Vgs-Vth=Vdata-Vref, due to just
Beginningization voltage VrefLess than data signal Vdata, therefore, turn at this moment the 6th transistor T6.First voltage end PVDD provides
The first voltage pvdd be applied to the anode of Organic Light Emitting Diode D via the 6th transistor T6, the 7th transistor T7 of conducting,
The cathode voltage pvee of Organic Light Emitting Diode D is provided by the second voltage source PVEE simultaneously.Wherein, the second voltage source PVEE provides
The second voltage signal pvee less than first voltage source PVDD provide the first voltage signal pvdd.According to shown in Fig. 1 organic
The structure of optical diode understands, when applying certain driving voltage at the anode of Organic Light Emitting Diode and negative electrode, and You Jifa
Optical diode is luminous.
Now, the driving electric current such as formula (2) of Organic Light Emitting Diode is flow through
I=k (Vdata-Vref)2 (2)
Understand according to formula (2), flow through Organic Light Emitting Diode drive the threshold voltage of electric current and the 6th transistor without
Close.
Thus, it is found that the image element circuit of present invention offer and driving method are permissible in explanation from the embodiments above
Drive transistor threshold voltage drift is overcome to produce the problem that picture is uneven.
On the other hand, the present invention by arrange two initializing signal lines respectively with the first initialization module, second initial
Changing module to connect, so design is advantageous in that, be not only connected with the first initialization module when one initializing signal line of use but also
When being connected with the second initialization module, due to the existence of parasitic capacitance, the problem that display picture is easily generated crosstalk；When setting
Put when two initializing signal lines are connected with the first initialization module, the second initialization module respectively and can reduce initializing signal
The load of line, reduces parasitic capacitance, it is to avoid the problem of crosstalk.Specifically, it is assumed that Lref1And Lref2For same holding wire,
When the B node of certain a line image element circuit is resetted, Lref1On have the change of electric current, the change of this electric current can be passed through
The first transistor M1, the first electric capacity C1 have influence on the B node current potential of other row image element circuits, are easily generated crosstalk phenomenon.This
L in inventionref1And Lref2For different two holding wires, wherein Lref1Only be responsible for A node reset, the reset of B node then by
Lref2Realize, Lref1And Lref2Between be independent of each other, therefore, when the B node of certain a line image element circuit is resetted,
Lref1On have the change of electric current, the change of this electric current does not interferes with the B node current potential of other row image element circuits, can keep away
Exempt from because cabling causes crosstalk and the problem of display inequality.
On the other hand, it can be seen that at whole working stage (P1～P4), first sweeps from the driving method shown in Fig. 6
Retouch the low level signal no overlap of low level signal and the LED control signal line EMIT of line S1, the second scan line S2, therefore, this
Plant design to export without SCAN and EMIT simultaneously.Due to SCAN and EMIT typically by the output of drive element of the grid, SCAN and
EMIT exports simultaneously and means that the workload of drive element of the grid increases, and the power consumption of circuit also can improve therewith.So, this
The image element circuit of bright embodiment offer and driving method thereof can reduce the workload of drive element of the grid, reduce image element circuit
Power consumption.
On the other hand, according to the work process in above-mentioned P1～P4 stage, before Organic Light Emitting Diode D luminescence,
Before the i.e. P4 stage, being all low level due to the signal in the second scan line S2, therefore, initialization voltage initializes letter through second
Number line Lref2, third transistor T3 of conducting be transferred to the anode of Organic Light Emitting Diode D, the sun to Organic Light Emitting Diode D
Pole resets, it is to avoid image element circuit produces in other of glow phase in stage and steals the brightest problem.Can from analysis above
To find out, the present invention arranges different initializing signal lines and connects from different initialization modules, reduces initializing signal line
Load, is prevented effectively from display picture and crosstalk and the problem of display inequality occurs.It should be noted that when shown in Fig. 3
When image element circuit includes three initialization modules, the organic electroluminescence display panel shown in Fig. 4 also includes the 3rd initializing signal line,
And the 3rd initializing signal line and the 3rd initialization module connect.The concrete structure of image element circuit is not limited by the present invention, only
If different initialization modules connects different initializing signal line structures broadly falls into protection scope of the present invention.
The present invention also provides for a kind of display floater, including image element circuit as above.
Above content is to combine concrete preferred implementation further description made for the present invention, it is impossible to assert
Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of present inventive concept, it is also possible to make some simple deduction or replace, all should be considered as belonging to the present invention's
Protection domain.
Claims (10)
1. an image element circuit, including:
Initialization module, Data write. module, memory module, threshold value compensation module and driving module and light emitting module, at least
Article two, initializing signal line；In described at least two initializing signal lines, the first initializing signal line and described initialization mould
Block connects, for inputting the signal on described first initializing signal line to described memory module；Described second initializes letter
Number line is connected with described initialization module, for inputting the signal on described second initializing signal line to described driving module
With described light emitting module.
2. image element circuit as claimed in claim 1, it is characterised in that described first initializing signal line and described second initial
Change the signal that is connected in same initialization voltage source, and described first initializing signal line of holding wire second initial with described
Change the signal on holding wire identical.
3. image element circuit as claimed in claim 1, it is characterised in that described first initializing signal line and described second initial
Change holding wire and be positioned at different film layer.
4. image element circuit as claimed in claim 1, it is characterised in that described image element circuit also include light emitting control line, first
Scan line, the second scan line and data wire, described initialization module includes the first initialization module and the second initialization module；Its
In,
Described first initialization module is connected with described first initializing signal line, described memory module, described light emitting control line,
Described second initialization module and described second initializing signal line, described driving module, described light emitting module, described the
Scan line, described second scan line connect,
Described Data write. module connects described memory module, described second scan line and described data wire respectively, for basis
Scanning signal in described second scan line controls whether to input to described memory module the data signal on described data wire,
Described memory module connects described first initialization module, described second initialization module and described data write mould respectively
Block, for stablizing the signal that described first initialization module, described second initialization module and described Data write. module produce,
Described threshold value compensation module connects described driving module, described second scan line respectively, for according to described second scanning
The threshold voltage of module is driven described in scanning signal compensation on line,
Described driving module connects described compensating module, described light emitting module, the first voltage end respectively, is used for driving described luminescence
Module is luminous,
Described light emitting module connects described light emitting control line, described driving module, the second voltage end respectively, for according to described
Control signal on photocontrol line is luminous.
5. image element circuit as claimed in claim 4, it is characterised in that described first initialization module includes the first transistor,
Described second initialization module includes that transistor seconds and third transistor, described Data write. module include the 4th transistor,
Described memory module includes that the first electric capacity, described compensating module include that the 5th transistor, described driving module include the 6th crystal
Pipe, described light emitting module includes the 7th transistor and Organic Light Emitting Diode；Wherein,
The grid of described the first transistor is connected with described light emitting control line, and the first pole is with described first initializing signal line even
Connecing, the second pole is connected with the first end of described first electric capacity；The grid of described transistor seconds is connected with described first scan line,
First pole is connected with described second initializing signal line, and the second pole is connected with the second end of described first electric capacity；Described trimorphism
The grid of body pipe is connected with described second scan signal line, and the first pole is connected with described second initializing signal line, the second pole with
The anode of described Organic Light Emitting Diode connects；The grid of described 4th transistor is connected with described second scan signal line, the
One pole is connected with described data wire, and the second pole is connected with the first end of described first electric capacity；The grid of described 5th transistor with
Described second scan signal line connects, and the first pole is connected with the second pole of described 6th transistor, the second pole and described first electricity
The second end held connects；The grid of described 6th transistor is connected with the second end of described first electric capacity, the first pole and the first electricity
Press bond；The grid of described 7th transistor is connected with described light emitting control line, the of the first pole and described 6th transistor
Two poles connect, and the second pole is connected with the anode of described Organic Light Emitting Diode；The negative electrode of described Organic Light Emitting Diode and second
Voltage end connects.
6. image element circuit as claimed in claim 5, it is characterised in that the voltage that described second voltage end provides is less than described the
The voltage that one voltage end provides.
7. the driving method of an image element circuit as claimed in claim 6, it is characterised in that described driving method specifically wraps
Include: the first stage, provide the first level signal to described first scan line, to described second scan line and described light emitting control line
Second electrical level signal is provided, the grid of described 6th transistor is initialized；Second stage, to described first scan line,
Described second scan line provides described first level signal, provides described second electrical level signal to described light emitting control line, by number
According to writing and being stored in described first electric capacity；Phase III, provide described to described first scan line, described light emitting control line
Second electrical level signal, provides described first level signal, the threshold voltage to described 6th transistor to described second scan line
Capture；Fourth stage, provides described second electrical level signal, to described to described first scan line, described second scan line
First scan line provides described first level signal, described organic light-emitting diode.
8. image element circuit as claimed in claim 7, it is characterised in that described the first transistor to described 7th transistor is
PMOS, described first level signal is low level signal, and described second electrical level signal is high level signal.
9. image element circuit as claimed in claim 7, it is characterised in that described the first transistor to described 7th transistor is
NMOS tube, described first level signal is high level signal, and described second electrical level signal is low level signal.
10. a display floater, including image element circuit as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Effective date of registration: 20211028 Address after: No.8, liufangyuan Henglu, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN TIANMA MICRO-ELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Patentee after: Tianma Micro-Electronics Co.,Ltd. Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 200120 Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. Patentee before: Tianma Micro-Electronics Co.,Ltd. |