CN107146577A - A kind of image element circuit, its driving method, display panel and display device - Google Patents
A kind of image element circuit, its driving method, display panel and display device Download PDFInfo
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- CN107146577A CN107146577A CN201710493101.0A CN201710493101A CN107146577A CN 107146577 A CN107146577 A CN 107146577A CN 201710493101 A CN201710493101 A CN 201710493101A CN 107146577 A CN107146577 A CN 107146577A
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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 invention discloses a kind of image element circuit, its driving method, display panel and display device, including：Couple control module, drive module, compensating module and luminescent device；By the mutual cooperation of these modules luminescent device can be driven to light, and the signal at LED control signal end is coupled to the first pole of driving transistor just because of coupling control module in coupling stages, improve the voltage of the pole of driving transistor first, driving transistor can be avoided to be chronically under forward bias, the time for having given drive transistor characteristics to recover, so that the threshold voltage shift and mobility change of driving transistor comparatively fast recover normal, and then avoid display abnormal, improve exhibit stabilization.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of image element circuit, its driving method, display panel and display
Device.
Background technology
Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) is current flat-panel monitor research
One of the focus in field, compared to liquid crystal display (Liquid Crystal Display, LCD), OLED display has low
The advantages of energy consumption, self-luminous, wide viewing angle and fast response time.At present, in display fields such as mobile phone, tablet personal computer, digital cameras,
OLED display has begun to replace traditional LCD display.Different using stable voltage control brightness from LCD, OLED belongs to
Driven in electric current, it is necessary to which stable electric current controls it to light.The general driving by pixel-driving circuit in OLED display
Transistor come drive OLED light.
However, OLED display is drawn when switching to 128 grey menu after showing gridiron pattern picture 1 minute in 128 GTGs
It is observed that obvious ghost (Image retention) phenomenon in face.This is due to the driving when showing gridiron pattern picture
Driving transistor luminous OLED is under same bias for a long time, especially under positive bias, causes the threshold value of driving transistor
Voltage drift and mobility change gradually aggravate and can not recover normal in time, and which results in 128 grey menus
When flow through each OLED electric current and change, cause display brightness uneven, cause display abnormal, so as to influence the steady of display
It is qualitative.
The content of the invention
The embodiment of the present invention provides a kind of image element circuit, its driving method, display panel and display device, existing to solve
Have in technology because driving transistor is under same bias for a long time, cause drive transistor characteristics to drift about, cause display different
The problem of normal and influence display stability.
Therefore, the embodiments of the invention provide a kind of image element circuit, including：Couple control module, drive module, compensation mould
Block and luminescent device；
The drive module includes：Driving transistor, the first transistor and second transistor；The first transistor
Control pole is connected with LED control signal end, and the first pole of the first transistor is connected with the first power end, and described first is brilliant
Second pole of body pipe is extremely connected with the first of the driving transistor；The control pole of the second transistor and the light emitting control
Signal end is connected, and the first pole of the second transistor is extremely connected with the second of the driving transistor, the second transistor
The second pole be connected with the first end of the luminescent device；Second end of the luminescent device is connected with second source end；It is described
Drive module is used to drive the luminescent device to light；
It is described coupling control module respectively with the LED control signal end and the first pole phase of the driving transistor
Connect, the first pole for the signal at the LED control signal end to be coupled to the driving transistor；
The compensating module is connected with the driving transistor, for entering to the driving transistor with the luminescent device
Row initializes and the signal of data signal end and the threshold voltage of the driving transistor is write into the driving transistor
Control pole.
Preferably, in above-mentioned image element circuit provided in an embodiment of the present invention, the coupling control module includes coupling electricity
Hold；
The first end of the coupled capacitor is connected with the LED control signal end, the second end and the driving transistor
First is extremely connected.
Preferably, in above-mentioned image element circuit provided in an embodiment of the present invention, the compensating module includes：Initialize submodule
Block, data write-in submodule, sub-module stored and compensation control submodule；Wherein,
The initialization submodule respectively with the first scanning signal end, initializing signal end, the driving transistor control
The first end of pole processed and the luminescent device is connected, for being driven respectively to described under the control at the first scanning signal end
The control pole and the first end of the luminescent device of dynamic transistor are initialized；
Data write-in submodule respectively with the second scanning signal end, the data signal end and the driving crystal
The first of pipe is extremely connected, for the signal of the data signal end to be supplied into institute under the control at the second scanning signal end
State the first pole of driving transistor；
It is described compensation control submodule respectively with the second scanning signal end, the control pole of the driving transistor and
The second of the driving transistor is extremely connected, for turning on the driving transistor under the control at the second scanning signal end
Control pole and the second pole；
Control pole of the sub-module stored respectively with first power end and the driving transistor is connected, and is used for
Charge or discharge are carried out under the co- controlling of first power end and the signal of the control pole of the driving transistor, and
The control pole and the described first electricity of the driving transistor are kept when the control pole of the driving transistor is in floating
Voltage difference between source is stable.
Preferably, in above-mentioned image element circuit provided in an embodiment of the present invention, the initialization submodule includes：3rd is brilliant
The transistors of body Guan Yu tetra-；
The control pole of the third transistor is connected with the first scanning signal end, the first pole and the initializing signal
End is connected, and the second pole is connected with the control pole of the driving transistor；
The control pole of 4th transistor is connected with the first scanning signal end, the first pole and the initializing signal
End is connected, and the second pole is connected with the first end of the luminescent device.
Preferably, in above-mentioned image element circuit provided in an embodiment of the present invention, the data write-in submodule includes：5th
Transistor；
The control pole of 5th transistor is connected with the second scanning signal end, the first pole of the 5th transistor
It is connected with the data signal end, the second pole of the 5th transistor is extremely connected with the first of the driving transistor.
Preferably, in above-mentioned image element circuit provided in an embodiment of the present invention, the compensation control submodule includes：6th
Transistor：
The control pole of 6th transistor is connected with the second scanning signal end, the first pole of the 6th transistor
Extremely it is connected with the second of the driving transistor, the second pole of the 6th transistor and the control pole phase of the driving transistor
Even.
Preferably, in above-mentioned image element circuit provided in an embodiment of the present invention, the memory module includes：Storage capacitance；
The first end of the storage capacitance is connected with first power end, the second end and the control of the driving transistor
Extremely it is connected.
Preferably, in above-mentioned image element circuit provided in an embodiment of the present invention, all transistors are P-type transistor.
Correspondingly, the embodiment of the present invention additionally provides a kind of display panel, including above-mentioned provided in an embodiment of the present invention
A kind of image element circuit.
Correspondingly, the embodiment of the present invention additionally provides a kind of display device, including provided in an embodiment of the present invention above-mentioned aobvious
Show panel.
Correspondingly, the embodiment of the present invention additionally provides a kind of using any of the above-described kind of pixel electricity provided in an embodiment of the present invention
The driving method on road, including：
Initial phase, the compensating module is initialized to the driving transistor with the luminescent device；
Data write phase, the compensating module is by the threshold voltage of the signal of data signal end and the driving transistor
Write the control pole of the driving transistor；
The first transistor, the second transistor and the drive in first glow phase, the drive module
Dynamic transistor turns, drive the luminescent device to light；
The signal at the LED control signal end is coupled to the driving crystal by coupling stages, the coupling control module
First pole of pipe.
Correspondingly, in above-mentioned driving method provided in an embodiment of the present invention, coupling is included in the coupling control module
During electric capacity, the coupling stages are specifically included：The coupled capacitor is by the signal coupling of the high potential at the LED control signal end
The first pole of the driving transistor is bonded to, with the voltage for the first pole for improving the driving transistor.
Correspondingly, in above-mentioned driving method provided in an embodiment of the present invention, the initial phase is specifically included：It is described
Control pole and the hair of the initialization submodule under the control at the first scanning signal end respectively to the driving transistor
The first end of optical device is initialized, to discharge the sub-module stored；
The data write phase is specifically included：Control of the data write-in submodule at the second scanning signal end
The lower signal by the data signal end is supplied to the first pole of the driving transistor；The compensation control submodule is described
Control pole and the second pole of the driving transistor are turned under the control at the second scanning signal end, the driving transistor is turned on
The sub-module stored is charged；
First glow phase also includes：The sub-module stored keep the control pole of the driving transistor with it is described
Voltage difference between first power end is stable；
Also include in the coupling stages：The sub-module stored keeps the control pole of the driving transistor and described the
Voltage difference between one power end is stable.
Correspondingly, in above-mentioned driving method provided in an embodiment of the present invention, after the coupling stages, in addition to：
Second glow phase；
The first transistor, the second transistor in second glow phase, the drive module and
The driving transistor conducting, drives the luminescent device to light.
Correspondingly, in above-mentioned driving method provided in an embodiment of the present invention, second glow phase also includes：It is described
Sub-module stored keeps the voltage difference between the control pole and first power end of the driving transistor stable.
The present invention has the beneficial effect that：
Image element circuit provided in an embodiment of the present invention, its driving method, display panel and display device, including：Coupling control
Molding block, drive module, compensating module and luminescent device；Wherein, the drive module is used to drive luminescent device luminous and wrapped
Include：Driving transistor, the first transistor and second transistor；The control pole of the first transistor and LED control signal end phase
Even, the first pole of the first transistor is connected with the first power end, the second pole of the first transistor and the first pole of driving transistor
It is connected；The control pole of second transistor is connected with LED control signal end, the first pole of second transistor and driving transistor
Second is extremely connected, and the second pole of second transistor is connected with the first end of luminescent device；Second end of luminescent device and the second electricity
Source is connected；Couple the first pole that control module is used to being coupled to the signal at LED control signal end into driving transistor；Compensation
Module is used to initialize driving transistor and luminescent device and by the signal of data signal end and driving transistor
The control pole of threshold voltage write driver transistor.Luminescent device can be driven to light, and just because of coupling control module
The signal at LED control signal end can be coupled to the first pole of driving transistor in coupling stages, so that driving transistor the
The voltage of one pole is improved, and driving transistor can be avoided to be chronically under forward bias, has given what drive transistor characteristics were recovered
Time, so that the threshold voltage shift and mobility change of driving transistor comparatively fast recover normal, and then avoid display abnormal,
Improve the stability of display.
Brief description of the drawings
Fig. 1 is the structural representation of image element circuit provided in an embodiment of the present invention；
Fig. 2 is the concrete structure schematic diagram of image element circuit provided in an embodiment of the present invention；
Fig. 3 is the concrete composition structural representation of image element circuit provided in an embodiment of the present invention；
Fig. 4 is the timing diagram of the image element circuit shown in Fig. 3；
Fig. 5 a illustrate for the analogue simulation of the signal at the first scanning signal end of image element circuit provided in an embodiment of the present invention
Figure；
Fig. 5 b illustrate for the analogue simulation of the signal at the second scanning signal end of image element circuit provided in an embodiment of the present invention
Figure；
Fig. 5 c illustrate for the analogue simulation of the signal at the LED control signal end of image element circuit provided in an embodiment of the present invention
Figure；
Fig. 5 d are the analogue simulation of the voltage of the first pole of the driving transistor of image element circuit provided in an embodiment of the present invention
Schematic diagram；
Fig. 6 is the flow chart of driving method provided in an embodiment of the present invention；
Fig. 7 is the structural representation of display panel provided in an embodiment of the present invention.
Embodiment
In order that the purpose of the present invention, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings, to the embodiment of the present invention
The image element circuit of offer, its driving method, the embodiment of display panel and display device are described in detail.Should
Understand, preferred embodiment disclosed below is merely to illustrate and explain the present invention, is not intended to limit the present invention.And not
In the case of conflict, the feature in embodiment and embodiment in the application can be mutually combined.
The embodiments of the invention provide a kind of image element circuit, as shown in figure 1, including：Couple control module 10, drive module
20th, compensating module 30 and luminescent device L；Drive module 20 is used to drive luminescent device L to light；Drive module 20 specifically can be with
Including：Driving transistor M0, the first transistor M1 and second transistor M2；The first transistor M1 control pole and light emitting control
Signal end Emit is connected, and the first transistor M1 the first pole is connected with the first power end PVDD, the first transistor M1 the second pole
Extremely it is connected with the first of driving transistor M0；Second transistor M2 control pole is connected with LED control signal end Emit, and second
Transistor M2 the first pole is extremely connected with the second of driving transistor M0, and second transistor M2 the second pole is with luminescent device L's
First end is connected；Luminescent device L the second end is connected with second source end PVEE；
Coupling control module 10 is extremely connected with the first of LED control signal end Emit and driving transistor M0 respectively, uses
In the first pole that LED control signal end Emit signal is coupled to driving transistor M0；
Compensating module 30 is connected with driving transistor M0, for being initialized to driving transistor M0 with luminescent device L
And by the signal of data signal end and driving transistor M0 threshold voltage write driver transistor M0 control pole.
Above-mentioned image element circuit provided in an embodiment of the present invention, including：Couple control module, drive module, compensating module with
And luminescent device；Wherein, the drive module be used to driving luminescent device luminous and including：Driving transistor, the first transistor with
And second transistor；The control pole of the first transistor is connected with LED control signal end, the first pole and first of the first transistor
Power end is connected, and the second pole of the first transistor is extremely connected with the first of driving transistor；The control pole and hair of second transistor
Optical control signal end is connected, and the first pole of second transistor is extremely connected with the second of driving transistor, and the second of second transistor
Pole is connected with the first end of luminescent device；Second end of luminescent device is connected with second source end；Coupling control module is used for will
The signal at LED control signal end is coupled to the first pole of driving transistor；Compensating module is used for driving transistor and photophore
Part is initialized and by the control of the signal of data signal end and the threshold voltage write driver transistor of driving transistor
Pole.Therefore, the embodiment of the present invention can drive luminescent device to light by the mutual cooperation of above-mentioned each module and transistor, and
And can be by the signal at LED control signal end coupled to driving transistor in coupling stages just because of coupling control module
First pole, so that the voltage of the pole of driving transistor first is improved, can avoid driving transistor from being chronically under forward bias, give
The time that drive transistor characteristics are recovered, so that the threshold voltage shift and mobility change of driving transistor comparatively fast recover
Normally, and then avoid display abnormal, improve exhibit stabilization.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, the first end of luminescent device is just
Pole, the second end is negative pole.Also, luminescent device is generally organic electroluminescent LED, it is in saturation in driving transistor
Realized in the presence of electric current during state luminous.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 1, driving transistor
M0 can be P-type transistor；Wherein, the grid of the P-type transistor is driving transistor M0 control pole, and source electrode is driving crystal
Pipe M0 the first pole, drains as driving transistor M0 the second pole.Also, when driving transistor M0 is P-type transistor, driving
Voltage difference Vs of the transistor M0 between its source electrode and its gridsgWith its threshold voltage VthBetween relation meet formula：-Vsg<
VthWhen turn on.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 1, the first transistor
M1 and second transistor M2 is P-type transistor.And the first transistor M1 is in the control of LED control signal end Emit signal
Under it is in the conduction state when, the first power end PVDD signal is supplied to driving transistor M0 the first pole.Second transistor
When M2 is in the conduction state under the control of LED control signal end Emit signal, by driving transistor M0 the second pole and hair
Optical device L is turned on, and the operating current that driving transistor M0 is exported is supplied to luminescent device L, to drive luminescent device L to light.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in Fig. 2 compensating module has
Body can include：Initialization submodule 31, data write-in submodule 32, sub-module stored 33 and compensation control submodule 34；
Wherein,
Initialization submodule 31 respectively with the first scanning signal end Scan1, initializing signal end Vinit, driving transistor
M0 control pole and luminescent device L first end are connected, under the first scanning signal end Scan1 control respectively to driving
Dynamic transistor M0 control pole and luminescent device L first end is initialized；
Data write-in submodule 32 respectively with the second scanning signal end Scan2, data signal end Data and driving crystal
The first of pipe M0 is extremely connected, for providing data signal end Data signal under the second scanning signal end Scan2 control
The first pole to driving transistor M0；
Compensate control submodule 34 respectively with the second scanning signal end Scan2, driving transistor M0 control pole and drive
The second of dynamic transistor M0 is extremely connected, the control for turning on driving transistor M0 under the second scanning signal end Scan2 control
Pole processed and the second pole；
Control pole of the sub-module stored 33 respectively with the first power end PVDD and driving transistor M0 is connected, for
Charge or discharge are carried out under the co- controlling of the signal of one power end PVDD and driving transistor M0 control pole, and in driving
Transistor M0 control pole is kept between driving transistor M0 control pole and the first power end PVDD when being in floating
Voltage difference is stable.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, the voltage V of the first power endddOne
As be on the occasion of the voltage V at second source endeeIt is typically grounded or for negative value, the voltage V at initial signal endinitGenerally negative value.
In practical application, above-mentioned concrete numerical value needs to design determination according to practical situations, is not limited thereto.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, coupling control module can also be used
In charging under the co- controlling in the signal at luminous signal end and the signal of the first end of driving transistor.
With reference to specific embodiment, the present invention is described in detail.It should be noted that the present embodiment merely to
The present invention is preferably explained, but does not limit the present invention.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 3, coupling control mould
Block 10 can specifically include：Coupled capacitor C1；
Coupled capacitor C1 first end is connected with LED control signal end Emit, the second end and the first of driving transistor M0
Extremely it is connected.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, coupled capacitor is due to the coupling of itself
Cooperation is used, first end voltage change and during its second end suspension joint, can be by the in order to keep the voltage difference at its two ends stable
The voltage difference of one end change is coupled to the second end.So as to which in the voltage change of the signal at LED control signal end, its second end is floating
When connecing, the voltage difference of the signal intensity at LED control signal end can be coupled to its second end by coupled capacitor, that is, be coupled to drive
First pole of dynamic transistor.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 3, initialization submodule
Block 31 can specifically include：Third transistor M3 and the 4th transistor M4；
Third transistor M3 control pole is connected with the first scanning signal end Scan1, the first pole and initializing signal end
Vinit is connected, and the second pole is connected with driving transistor M0 control pole；
4th transistor M4 control pole is connected with the first scanning signal end Scan1, the first pole and initializing signal end
Vinit is connected, and the second pole is connected with luminescent device L first end.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 3, third transistor
M3 and the 4th transistor M4 can be P-type transistor.Or, third transistor can also be N-type transistor with the 4th transistor,
It is not limited thereto.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, third transistor is in the first scanning
When in the conduction state under the control of the signal of signal end, the signal at initializing signal end can be supplied to driving transistor
Control pole, to be initialized to driving transistor.4th transistor is on shape under the control at the first scanning signal end
During state, the signal at initializing signal end can be supplied to the first end of luminescent device, to be initialized to luminescent device.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 3, data write-in
Module 32 can specifically include：5th transistor M5；
5th transistor M5 control pole is connected with the second scanning signal end Scan2, the 5th transistor M5 the first pole with
Data signal end Data is connected, and the 5th transistor M5 the second pole is extremely connected with the first of driving transistor M0.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 3, the 5th transistor
M5 can be P-type transistor.Or, the 5th transistor can also be N-type transistor, be not limited thereto.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, the 5th transistor is in the second scanning
When in the conduction state under the control of the signal of signal end, the signal of data signal end can be supplied to the of driving transistor
One-level, by the signal write driver transistor of data signal end.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 3, compensation control
Module 34 can specifically include：6th transistor M6：
6th transistor M6 control pole is connected with the second scanning signal end Scan2, the 6th transistor M6 the first pole with
The second of driving transistor M0 is extremely connected, and the 6th transistor M6 the second pole is connected with driving transistor M0 control pole.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 3, the 6th transistor
M6 can be P-type transistor.Or, the 6th transistor can also be N-type transistor, be not limited thereto.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, the 6th transistor is in the second scanning
, can be by the second of the control pole of driving transistor and driving transistor when in the conduction state under the control of the signal of signal end
Pole is turned on, by the control of the voltage of the signal of data signal end and the threshold voltage write driver transistor of driving transistor
Pole.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, as shown in figure 3, memory module 33
It can specifically include：Storage capacitance C2；
Storage capacitance C2 first end is connected with the first power end PVDD, the second end and driving transistor M0 control pole phase
Even.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, storage capacitance can be in the first electricity
Charged under the co- controlling of the signal of source and the signal of the control pole of driving transistor；And in the signal of the first power end
Discharged with the co- controlling of the signal of the control pole of driving transistor；And driving transistor control pole be in it is floating
When connecing state, keep the voltage difference between the first power end and the control pole of driving transistor stable, by driving transistor
The voltage of threshold voltage and the signal of data signal end is stored in the control pole of driving transistor.
It the above is only the concrete structure for illustrating each module in image element circuit provided in an embodiment of the present invention, specific real
Shi Shi, the concrete structure of above-mentioned each module is not limited to said structure provided in an embodiment of the present invention, can also be art technology
Other structures knowable to personnel, are not limited thereto.
Further, in order to simplify the fabrication processing of image element circuit, in the specific implementation, carried in the embodiment of the present invention
In the above-mentioned image element circuit supplied, as shown in figure 3, all transistors can be made to be p-type switching transistor.
In the specific implementation, in above-mentioned image element circuit provided in an embodiment of the present invention, P-type transistor is acted in high potential
Lower cut-off, is turned under low potential effect；N-type transistor is turned under high potential effect, is ended under low potential effect.
It should be noted that in above-mentioned image element circuit provided in an embodiment of the present invention, above-mentioned each transistor can be thin
Film transistor (TFT, Thin Film Transistor) or metal oxide semiconductor field effect tube (MOS, Metal
Oxide Scmiconductor), it is not limited thereto.In the specific implementation, the control of these transistors extremely its grid, and
According to the type of transistor and the difference of the signal of input, source electrode that can be using the first pole as transistor or drain electrode, and
The drain electrode as transistor or source electrode using the second pole.
Below by taking the image element circuit shown in Fig. 3 as an example, combined circuit timing diagram is to above-mentioned picture provided in an embodiment of the present invention
The course of work of plain circuit is described.High potential is represented with 1 in described below, 0 represents low potential.It should be noted that 1 He
0 is logic level, and it is merely to the preferably specific work process of the explanation embodiment of the present invention, rather than in the specific implementation
It is applied to the current potential in the control pole of each transistor.
As shown in figure 3, all transistors are P-type transistor；Corresponding circuit timing diagram is as shown in Figure 4.Specifically, select
Take initial phase T1, data write phase T2, the first glow phase T3 and the coupling in circuit timing diagram as shown in Figure 4
Stage T4 four-stage.
In initial phase T1, Scan1=0, Scan2=1, Emit=1, therefore third transistor M3 and the 4th transistor
M4 is turned on, and the first transistor M1, second transistor M2, the 5th transistor M5 and the 6th transistor M6 are turned off.Conducting
Initializing signal end Vinit signal is supplied to driving transistor M0 control pole and storage capacitance C2 by third transistor M3,
Initialized with the control pole to driving transistor M0 with storage capacitance C2.4th transistor M4 of conducting is by initializing signal
End Vinit signal is supplied to luminescent device L first end, to be initialized to luminescent device L.Now driving transistor M0
It is in the conduction state, think that next stage write-in data signal end Data signal does preparation work, but be due to the second crystal
Pipe M2 ends, therefore luminescent device L does not light.
In data write phase T2, Scan1=1, Scan2=0, Emit=1, therefore the 5th transistor M5 and the 6th crystal
Pipe M6 is turned on, and the first transistor M1, second transistor M2, third transistor M3 and the 4th transistor M4 are turned off.Conducting
The 5th transistor M5 data signal end Data signal is supplied to driving transistor M0 the first pole, therefore driving transistor
M0 the first pole and voltage V of the voltage at the ends of coupled capacitor C1 second for data signal end Data signaldata.The 6th of conducting
Transistor M6 makes driving transistor M0 control pole be turned on driving transistor M0 the second pole, and control driving transistor M0 is in
Diode-connected state, so that data signal end Data signal passes through the driving transistor M0 in diode-connected state
Storage capacitance C2 is charged, until the voltage of driving transistor M0 control pole is changed into：Vdata-|Vth| untill, wherein VthRepresent
Driving transistor M0 threshold voltage.
In the first glow phase T3, Scan1=1, Scan2=1, Emit=0, therefore the first transistor M1 and the second crystal
Pipe M2 is turned on, and third transistor M3, the 4th transistor M4, the 5th transistor M5 and the 6th transistor M6 are turned off.Conducting
The first transistor M1 by the voltage V of the first power end PVDD signalddDriving transistor M0 the first pole is supplied to, therefore is driven
The voltage of the first pole and the ends of coupled capacitor C1 second of moving transistor M0 is Vdd, therefore, the voltage difference at coupled capacitor C1 two ends is
Vdd-V(0)emit, V (0)emitRepresent the voltage of the signal of LED control signal end Emit low potentials.The second transistor M2 of conducting
Driving transistor M0 the second pole and luminescent device L are turned on.Voltages and its first pole of the driving transistor M0 in its control pole
Voltage co- controlling under be in saturation state, it can be seen from saturation state current characteristics, flow through driving transistor M0 and use
In the luminous operating current I of driving luminescent device LLMeet formula：IL=K (Vsg-|Vth|)2=K (Vdd-Vdata+|Vth|-|Vth|
)2=K (Vdd-Vdata)2；Wherein, VsgFor driving transistor M0 source gate voltage, and Vsg=Vdd-Vdata+|Vth|；K joins for structure
This numerical value is stablized relatively in number, identical structure, can be regarded as constant.Therefore luminescent device L is in operating current ILDriving under open
Originate light.
In coupling stages T4, Scan1=1, Scan2=1, Emit=1, therefore the first transistor M1, second transistor M2,
Third transistor M3, the 4th transistor M4, the 5th transistor M5 and the 6th transistor M6 are turned off, therefore luminescent device L is not
It is luminous.Therefore, driving transistor M0 the first pole is in floating, due to the voltage of LED control signal end Emit signal
High potential is changed into from low potential, therefore the voltage change of coupled capacitor C1 first end is V (0)emit+ Δ v, wherein Δ v are represented
When LED control signal end Emit signal is changed into high potential from low potential, coupled capacitor C is coupled to the voltage difference of its other end.
Due to coupled capacitor C1 coupling, in order to which the voltage difference for keeping coupled capacitor C1 two ends is still Vdd-V(0)emit, driving crystalline substance
The voltage of body pipe M0 the first pole is driven high as Vdd+ Δ v so that driving transistor M0 source gate voltage Vsg=(Vdd+Δv)-
Vdata+|Vth|.Therefore, the voltage high of driving transistor M0 the first pole is made by coupled capacitor C1 coupling, can be with
Improve driving transistor M0 VsgSize, so as to improve driving transistor M0 characteristic, make driving transistor M0 threshold
Threshold voltage drifts about and mobility change can comparatively fast recover normal.
In addition, can also include after coupling stages T4：Second glow phase T5.In the second glow phase T5, Scan1
=1, Scan2=1, Emit=0, therefore the first transistor M1 and second transistor M2 conductings, and third transistor M3, the 4th crystalline substance
Body pipe M4, the 5th transistor M5 and the 6th transistor M6 are turned off.The first transistor M1 of conducting is by the first power end PVDD
Signal voltage VddIt is supplied to driving transistor M0 the first pole, therefore driving transistor M0 the first pole and coupled capacitor C1
The voltage at the second end is changed into Vdd.And LED control signal end Emit signal is changed into low potential, therefore coupling electricity from high potential
Hold C1 to the voltage of driving transistor M0 the first pole without coupling.The second transistor M2 of conducting is by driving transistor M0's
Second pole is turned on luminescent device L.Co- controllings of the driving transistor M0 in the voltage and the voltage of its first pole of its control pole
Saturation state is in down, it can be seen from saturation state current characteristics, flows through driving transistor M0 and for driving luminescent device L to send out
The operating current I of lightLMeet formula：IL=K (Vsg-|Vth|)2=K (Vdd-Vdata+|Vth|-|Vth|)2=K (Vdd-Vdata)2；Its
In, VsgFor driving transistor M0 source gate voltage, and Vsg=Vdd-Vdata+|Vth|；K is structural parameters, and this in identical structure is counted
Value is stablized relatively, can be regarded as constant.Therefore luminescent device L is in operating current ILDriving under restart to light, until under
One frame starts.
It should be noted that Δ v specific value needs to design determination according to actual application environment, do not limit herein
It is fixed.Its bigger coupling ability of capacitance of general couple electric capacity is stronger, then Δ v is bigger.
In actual applications, when pixel shows most black picture, the voltage of the signal of the data signal end of the pixel is inputted
VdataGenerally 5.5V, and the voltage V of the signal of the first power endddGenerally 4.6V, hence in so that driving transistor is in just
To under bias, now driving transistor may be at cut-off state or also may be used in the first glow phase and the second glow phase
With in the state for exporting very small electric current, so that pixel shows most black picture.Because driving transistor is in forward bias
Under, its characteristic is difficult to recover, and above-mentioned image element circuit provided in an embodiment of the present invention, in coupling stages, passes through the work of coupled capacitor
With, make driving transistor the first pole voltage improve, driving transistor can be avoided to be chronically under forward bias, give drive
The time of the recovery of dynamic transistor characteristic, and then the threshold voltage shift and mobility change of driving transistor can be made very fast
Recover normal.
In addition, it is necessary to explanation, when driving transistor is in negative bias certain time length, due to preparation technology, material
The factors such as material, its characteristic deviation degree is very small, and the characteristic drift can be ignored in error allowed band, therefore by mistake
In poor allowed band, in coupling stages the effect of coupled capacitor to the characteristic of the driving transistor in negative bias substantially invariably
Good influence.
By taking the structure of the image element circuit shown in Fig. 3 as an example, using each signal shown in Fig. 5 a to Fig. 5 c analogue simulation when
Sequence figure carries out analogue simulation to the voltage of driving transistor M0 the first pole.Fig. 5 a are the first scanning signal end Scan1 signal
Analogue simulation figure, Fig. 5 b for the second scanning signal end Scan2 signal analogue simulation figure, Fig. 5 c be LED control signal end
The analogue simulation figure of Emit signal, Fig. 5 d are the analogue simulation figure of the voltage of driving transistor M0 the first pole.In Fig. 5 a extremely
In Fig. 5 d, ordinate represents voltage, and abscissa represents the time.Part in Fig. 5 c in dashed rectangle with dashed rectangle in Fig. 5 d
Part it is corresponding, it can be seen that when at LED control signal end, Emit signal is changed into high potential from low potential, drive crystal
The voltage of pipe M0 the first pole is elevated, therefore above-mentioned image element circuit provided in an embodiment of the present invention can avoid driving transistor
It is in for a long time under forward bias, has given the time of the recovery of drive transistor characteristics, and then the threshold of driving transistor can be made
Threshold voltage drifts about and mobility change can comparatively fast recover normal.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of using above-mentioned provided in an embodiment of the present invention
A kind of driving method of image element circuit, as shown in fig. 6, including：
S601, initial phase, compensating module are initialized to driving transistor with luminescent device；
S602, data write phase, compensating module write the threshold voltage of the signal of data signal end and driving transistor
Enter the control pole of driving transistor；
The first transistor, second transistor and driving transistor in S603, the first glow phase, drive module are led
Logical, driving luminescent device lights；
The signal at LED control signal end is coupled to the of driving transistor by S604, coupling stages, coupling control module
One pole.
Above-mentioned driving method provided in an embodiment of the present invention, can improve the characteristic of driving transistor, make driving transistor
Threshold voltage shift and mobility change comparatively fast recover normal, it is to avoid display is abnormal, improves the stability of display.
In the specific implementation, in above-mentioned driving method provided in an embodiment of the present invention, coupling is included in coupling control module
When closing electric capacity, coupling stages can specifically include：Coupled capacitor is by the signal of the high potential at LED control signal end coupled to drive
First pole of dynamic transistor, with the voltage for the first pole for improving driving transistor.
In the specific implementation,, can be with after coupling stages in above-mentioned driving method provided in an embodiment of the present invention
Including：Second glow phase；The first transistor, second transistor and driving in the second glow phase, drive module is brilliant
Body pipe is turned on, and driving luminescent device lights.
In the specific implementation, can be with respectively in data write phase and the first glow phase and the second glow phase
Including coupling control module luminous signal end signal and driving transistor first end signal co- controlling under charge.
In the specific implementation, specifically included in compensating module：Initialization submodule, data write-in submodule, storage submodule
When block and compensation control submodule, in above-mentioned driving method provided in an embodiment of the present invention, initial phase specifically can be with
Including：Control pole and luminescent device of the initialization submodule under the control at the first scanning signal end respectively to driving transistor
First end is initialized, to discharge sub-module stored.Data write phase can specifically include：Data write submodule
The signal of data signal end is supplied to the first pole of driving transistor by block under the control at the second scanning signal end；Compensation control
Submodule turns on control pole and the second pole of driving transistor under the control at the second scanning signal end, turns on driving transistor
Sub-module stored is charged.
In the specific implementation, specifically included in compensating module：Initialization submodule, data write-in submodule, storage submodule
When block and compensation control submodule, in above-mentioned driving method provided in an embodiment of the present invention, the first glow phase can be with
Including：Sub-module stored keeps the voltage difference between the control pole and the first power end of driving transistor stable；
It can also include in coupling stages：Sub-module stored is kept between the control pole and the first power end of driving transistor
Voltage difference it is stable.
In the specific implementation, specifically included in compensating module：Initialization submodule, data write-in submodule, storage submodule
When block and compensation control submodule, in above-mentioned driving method provided in an embodiment of the present invention, the second glow phase can be with
Including：Sub-module stored keeps the voltage difference between the control pole and the first power end of driving transistor stable.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display panel, as shown in fig. 7, comprises this hair
Any of the above-described kind of image element circuit that bright embodiment is provided.The principle that the display panel solves problem is similar to foregoing image element circuit,
Therefore the implementation of the display panel may refer to the implementation of foregoing image element circuit, repeats part and will not be repeated here.And for
Other essential parts of the display panel are it will be apparent to an ordinarily skilled person in the art that having, herein
Do not repeat, also should not be taken as limiting the invention.
In the specific implementation, above-mentioned display panel provided in an embodiment of the present invention is organic electroluminescence display panel.In reality
When prepared by production, (Layout) is typically laid out on underlay substrate to form above-mentioned display surface provided in an embodiment of the present invention
Coupled capacitor in plate, image element circuit is arranged in domain in any way in the case of can allowing in Layout spaces, and
And the capacitance of the coupled capacitor set is the bigger the better.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display device, including the embodiment of the present invention is carried
The above-mentioned display panel supplied.The display device can be：Mobile phone, tablet personal computer, television set, display, notebook computer, number
Any product or part with display function such as photo frame, navigator.For other essential compositions of the display device
Part is that it will be apparent to an ordinarily skilled person in the art that have, will not be described here, and also be should not be used as to the present invention's
Limitation.The implementation of the display device may refer to the embodiment of above-mentioned image element circuit, repeats part and repeats no more.
Image element circuit provided in an embodiment of the present invention, its driving method, display panel and display device, including：Coupling control
Molding block, drive module, compensating module and luminescent device；Wherein, the drive module is used to drive luminescent device luminous and wrapped
Include：Driving transistor, the first transistor and second transistor；The control pole of the first transistor and LED control signal end phase
Even, the first pole of the first transistor is connected with the first power end, the second pole of the first transistor and the first pole of driving transistor
It is connected；The control pole of second transistor is connected with LED control signal end, the first pole of second transistor and driving transistor
Second is extremely connected, and the second pole of second transistor is connected with the first end of luminescent device；Second end of luminescent device and the second electricity
Source is connected；Couple the first pole that control module is used to being coupled to the signal at LED control signal end into driving transistor；Compensation
Module is used to initialize driving transistor and luminescent device and by the signal of data signal end and driving transistor
The control pole of threshold voltage write driver transistor.Therefore, the embodiment of the present invention passes through the mutual of above-mentioned each module and transistor
Coordinate, luminescent device can be driven to light, and light emitting control can be believed in coupling stages just because of coupling control module
Number end signal be coupled to driving transistor the first pole so that the pole of driving transistor first voltage improve, can avoid drive
Dynamic transistor is chronically under forward bias, the time for having given drive transistor characteristics to recover, so that the threshold of driving transistor
Threshold voltage drifts about and mobility change comparatively fast recovers normal, and then avoids display abnormal, improves exhibit stabilization.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (15)
1. a kind of image element circuit, it is characterised in that including：Couple control module, drive module, compensating module and photophore
Part；
The drive module includes：Driving transistor, the first transistor and second transistor；The control of the first transistor
Pole is connected with LED control signal end, and the first pole of the first transistor is connected with the first power end, the first transistor
The second pole be extremely connected with the first of the driving transistor；The control pole of the second transistor and the LED control signal
End is connected, and the first pole of the second transistor is extremely connected with the second of the driving transistor, and the of the second transistor
Two poles are connected with the first end of the luminescent device；Second end of the luminescent device is connected with second source end；The driving
Module is used to drive the luminescent device to light；
The coupling control module is extremely connected with the first of the LED control signal end and the driving transistor respectively, uses
In the first pole that the signal at the LED control signal end is coupled to the driving transistor；
The compensating module is connected with the driving transistor, for being carried out just to the driving transistor and the luminescent device
Beginningization and the control that the signal of data signal end and the threshold voltage of the driving transistor are write to the driving transistor
Pole.
2. image element circuit as claimed in claim 1, it is characterised in that the coupling control module includes coupled capacitor；
The first end of the coupled capacitor is connected with the LED control signal end, the second end and the first of the driving transistor
Extremely it is connected.
3. image element circuit as claimed in claim 1, it is characterised in that the compensating module includes：Initialization submodule, data
Write submodule, sub-module stored and compensation control submodule；Wherein,
The initialization submodule respectively with the first scanning signal end, initializing signal end, the driving transistor control pole
And the first end of the luminescent device is connected, for brilliant to the driving respectively under the control at the first scanning signal end
The control pole of body pipe and the first end of the luminescent device are initialized；
Data write-in submodule respectively with the second scanning signal end, the data signal end and the driving transistor
First is extremely connected, for the signal of the data signal end to be supplied into the drive under the control at the second scanning signal end
First pole of dynamic transistor；
The compensation control submodule respectively with the second scanning signal end, the control pole of the driving transistor and described
The second of driving transistor is extremely connected, the control for turning on the driving transistor under the control at the second scanning signal end
Pole processed and the second pole；
Control pole of the sub-module stored respectively with first power end and the driving transistor is connected, in institute
State the first power end and carry out charge or discharge under the co- controlling of the signal of the control pole of the driving transistor, and in institute
The control pole for stating driving transistor keeps the control pole and first power end of the driving transistor when being in floating
Between voltage difference it is stable.
4. image element circuit as claimed in claim 3, it is characterised in that the initialization submodule includes：Third transistor with
4th transistor；
The control pole of the third transistor is connected with the first scanning signal end, the first pole and initializing signal end phase
Even, the second pole is connected with the control pole of the driving transistor；
The control pole of 4th transistor is connected with the first scanning signal end, the first pole and initializing signal end phase
Even, the second pole is connected with the first end of the luminescent device.
5. image element circuit as claimed in claim 3, it is characterised in that the data write-in submodule includes：5th transistor；
The control pole of 5th transistor is connected with the second scanning signal end, the first pole of the 5th transistor and institute
State data signal end to be connected, the second pole of the 5th transistor is extremely connected with the first of the driving transistor.
6. image element circuit as claimed in claim 3, it is characterised in that the compensation control submodule includes：6th transistor：
The control pole of 6th transistor is connected with the second scanning signal end, the first pole of the 6th transistor and institute
State driving transistor second is extremely connected, and the second pole of the 6th transistor is connected with the control pole of the driving transistor.
7. image element circuit as claimed in claim 3, it is characterised in that the memory module includes：Storage capacitance；
The first end of the storage capacitance is connected with first power end, the second end and the control pole phase of the driving transistor
Even.
8. the image element circuit as described in claim any one of 1-7, it is characterised in that all transistors are P-type transistor.
9. a kind of display panel, it is characterised in that including the image element circuit as described in claim any one of 1-8.
10. a kind of display device, it is characterised in that including display panel as claimed in claim 9.
11. a kind of driving method of image element circuit using as described in claim any one of 1-8, it is characterised in that including：
Initial phase, the compensating module is initialized to the driving transistor with the luminescent device；
Data write phase, the compensating module writes the signal of data signal end and the threshold voltage of the driving transistor
The control pole of the driving transistor；
The first transistor, the second transistor and the driving in first glow phase, the drive module is brilliant
Body pipe is turned on, and drives the luminescent device to light；
The signal at the LED control signal end is coupled to the driving transistor by coupling stages, the coupling control module
First pole.
12. driving method as claimed in claim 11, it is characterised in that include coupled capacitor in the coupling control module
When, the coupling stages are specifically included：The signal of the high potential at the LED control signal end is coupled to by the coupled capacitor
First pole of the driving transistor, with the voltage for the first pole for improving the driving transistor.
13. driving method as claimed in claim 11, it is characterised in that the initial phase is specifically included：It is described initial
Control pole and the photophore of beggar's module under the control at the first scanning signal end respectively to the driving transistor
The first end of part is initialized, to discharge the sub-module stored；
The data write phase is specifically included：The data write submodule will under the control at the second scanning signal end
The signal of the data signal end is supplied to the first pole of the driving transistor；The compensation control submodule is described second
Control pole and the second pole of the driving transistor are turned under the control at scanning signal end, makes the driving transistor conducting to institute
State sub-module stored charging；
First glow phase also includes：The sub-module stored keeps the control pole and described first of the driving transistor
Voltage difference between power end is stable；
Also include in the coupling stages：The sub-module stored keeps the control pole and the described first electricity of the driving transistor
Voltage difference between source is stable.
14. the driving method as described in claim any one of 11-13, it is characterised in that after the coupling stages, also wrap
Include：Second glow phase；
The first transistor, the second transistor in second glow phase, the drive module and described
Driving transistor is turned on, and drives the luminescent device to light.
15. driving method as claimed in claim 14, it is characterised in that second glow phase also includes：The storage
Submodule keeps the voltage difference between the control pole and first power end of the driving transistor stable.
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| CN111739476A (en) * | 2020-06-16 | 2020-10-02 | 昆山国显光电有限公司 | Shift register and display panel |
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| WO2023005648A1 (en) * | 2021-07-30 | 2023-02-02 | 京东方科技集团股份有限公司 | Pixel circuit and driving method therefor, array substrate, and display device |
| CN113990262A (en) * | 2021-11-18 | 2022-01-28 | 武汉天马微电子有限公司 | Pixel circuit, display panel and display device |
| CN113990262B (en) * | 2021-11-18 | 2023-03-21 | 武汉天马微电子有限公司 | Pixel circuit, display panel and display device |
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| CN107146577B (en) | 2019-08-09 |
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