CN109979383A - Pixel-driving circuit and display panel - Google Patents
Pixel-driving circuit and display panel Download PDFInfo
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- CN109979383A CN109979383A CN201910331944.XA CN201910331944A CN109979383A CN 109979383 A CN109979383 A CN 109979383A CN 201910331944 A CN201910331944 A CN 201910331944A CN 109979383 A CN109979383 A CN 109979383A
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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]
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
Pixel-driving circuit and display panel provided by the present application, using the pixel-driving circuit of 4T2C structure, increase by an electric capacity of voltage regulation in the grid of third transistor, reduce influence when the first transistor is closed to first node, to achieve the purpose that improve the uniformity of luminance of luminescent device, and then promote image quality.
Description
Technical field
This application involves field of display technology, a kind of specific pixel-driving circuit and display panel.
Background technique
In the prior art, the transistor in pixel-driving circuit mostly uses greatly low-temperature polysilicon film transistor or oxide
Thin film transistor (TFT).However, traditional pixel-driving circuit detection driving transistor mobility when, due to driving transistor
When the transistor of connection is closed, the mobility that will lead to each driving transistor generates biggish difference, influences display panel benefit
Uniformity after repaying.
Summary of the invention
The embodiment of the present application provides a kind of pixel-driving circuit and display panel, when the crystal connecting with driving transistor
When pipe is closed, the difference between the mobility of each driving transistor can be reduced, so that it is compensated to improve display panel
Even property.
In a first aspect, this application provides a kind of pixel-driving circuits, comprising: compensating module, receiving module, light emitting module
And detecting module；The compensating module, the receiving module and the detecting module are connect with the light emitting module；
The compensating module accesses first control signal, and the compensating module is used for the control in the first control signal
It is lower by data signal transmission to first node；
The receiving module accesses second control signal, and the receiving module is used for the control in the second control signal
Stablize the current potential of the first node by power supply signal down；
The detecting module receives third and controls signal, and the detecting module is used for will under the control of third control signal
Initial signal is transmitted to second node, and the detecting module is also used to detect the virtual voltage of the light emitting module, and will be described
Virtual voltage is compared with predeterminated voltage, to generate the offset voltage of the light emitting module；
Wherein, the compensating module is also used under the control of the first control signal, according to the offset voltage pair
The data-signal compensates, and by compensated data signal transmission to the first node.
In pixel-driving circuit provided by the present application, the compensating module includes: the first transistor；
The grid of the first transistor is electrically connected at the first control signal, the source electrode electricity of the first transistor
Property is connected to the data-signal, and the drain electrode of the first transistor is electrically connected at the first node.
In pixel-driving circuit provided by the present application, first receiving module includes: second transistor and pressure stabilizing
Capacitor；
The grid of the second transistor is electrically connected at the second control signal, the source electrode electricity of the second transistor
Property is connected to the power supply signal, and the drain electrode of the second transistor is electrically connected at the electric capacity of voltage regulation；
The first end of the electric capacity of voltage regulation is electrically connected at the drain electrode of the second transistor, and the second of the electric capacity of voltage regulation
End is electrically connected at the first node.
In pixel-driving circuit provided by the present application, the light emitting module include: third transistor, luminescent device and
Storage capacitance；
The grid of the third transistor is electrically connected at the first node, and the source electrode of the third transistor electrically connects
It is connected to the power supply signal, the drain electrode of the third transistor is electrically connected at second node；
The cathode terminal of the luminescent device is electrically connected at the second node, and the anode tap of the luminescent device electrically connects
It is connected to ground terminal；
The first end of the storage capacitance is electrically connected at the first node, and the second end of the storage capacitance electrically connects
It is connected to the second node.
In pixel-driving circuit provided by the present application, the detecting module includes: the 4th transistor, first switch,
Two switches and probe unit；
The grid of 4th transistor is electrically connected at the third control signal, the source electrode electricity of the 4th transistor
Property is connected to the first switch, and the drain electrode of the second transistor is electrically connected at the second node；
The first end of the first switch is electrically connected at the source electrode of the 4th transistor, and the second of the first switch
End is electrically connected at the initial signal；
The first end of the second switch is electrically connected at second receiving module, the second end electricity of the second switch
Property be connected to the probe unit, the probe unit is used to detect the virtual voltage of the light emitting module, and by the reality
Voltage is compared with predeterminated voltage, to generate the offset voltage of the light emitting module.
In pixel-driving circuit provided by the present application, the first transistor, the second transistor, the third are brilliant
Body pipe and the 4th transistor are N-type transistor.
In pixel-driving circuit provided by the present application, the driver' s timing of the pixel-driving circuit includes:
First initial phase initializes the current potential of the second node；
Second initial phase initializes the current potential of the first node；
Detection phase detects the virtual voltage of the light emitting module, and by the virtual voltage compared with predeterminated voltage, with
Generate the offset voltage of the light emitting module；
Compensated stage compensates the data-signal according to the offset voltage；
Light emitting phase, pixel-driving circuit generates driving current and is provided to the luminescent device, for driving the hair
The luminescence display of optical device.
In pixel-driving circuit provided by the present application, in first initial phase, the first control signal is
Low potential, the second control signal are low potential, and the third control signal is high potential, and the initial signal is transmitted to institute
State second node；
In second initial phase, the first control signal is high potential, and the second control signal is high electricity
Position, the third control signal as high potential, and the data signal transmission to the first node, the power supply signal is transmitted to
The first end of the electric capacity of voltage regulation, to charge to the electric capacity of voltage regulation；
In the detection phase, the first control signal is low potential, and the second control signal is high potential, described
It is high potential that third, which controls signal, and the power supply signal is by being transmitted to the first end of the electric capacity of voltage regulation, to stablize described the
The current potential of one node；When the first switch is opened, the initial signal is transmitted to the second node；It opens when described second
When closing opening, detectable signal is transmitted to the second node, and the probe unit detects the current potential of the second node, to visit
The virtual voltage of the light emitting module is surveyed, and calculates the difference between the virtual voltage and the predeterminated voltage, to calculate
The offset voltage of the light emitting module；
In the compensated stage, the first control signal is high potential, and the second control signal is low potential, described
It is high potential that third, which controls signal, and the first transistor compensates the data-signal according to the offset voltage；
In the light emitting phase, the first control signal is low potential, and the second control signal is low potential, described
Third controls signal as low potential, and the data signal transmission to first node, the second source signal is transmitted to the second section
Point, the current potential of the compensated data-signal is kept at the first node, and the power supply signal is transmitted to the photophore
Part.
In pixel-driving circuit provided by the present application, the first control signal, the second control signal and institute
Third control signal is stated to be provided by external timing device.
Second aspect, the application provide a kind of display panel, the pixel-driving circuit including the application any instance.
Pixel-driving circuit and display panel provided by the present application increase by a pressure stabilizing by the grid in third transistor
Capacitor reduces influence when third transistor is closed to first node, to reach the mesh for the uniformity of luminance for improving luminescent device
, and then promote image quality.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of application
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram of pixel-driving circuit provided by the embodiments of the present application；
Fig. 2 is the circuit diagram of pixel-driving circuit provided by the embodiments of the present application；
Fig. 3 is the timing diagram of the driving signal of pixel-driving circuit provided by the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, those skilled in the art's every other implementation obtained without creative efforts
Example, shall fall in the protection scope of this application.
All transistors used in the examples of the application can be thin film transistor (TFT) or field-effect tube or other characteristic phases
Same device, since the source electrode of the transistor used here, drain electrode are symmetrical, so its source electrode, drain electrode can be interchanged.
In the embodiment of the present application, to distinguish the two poles of the earth of transistor in addition to grid, wherein source electrode will be known as in a pole, another pole is known as leaking
Pole.Intermediate ends by the form prescribed switch transistor in attached drawing are grid, signal input part is source electrode, output end is drain electrode.
Furthermore transistor used by the embodiment of the present application may include P-type transistor and/or two kinds of N-type transistor, wherein p-type is brilliant
Body pipe is connected when grid is low level, ends when grid is high level, and N-type transistor is to lead when grid is high level
It is logical, end when grid is low level.
Referring to Fig. 1, Fig. 1 is the structural schematic diagram of pixel-driving circuit provided by the embodiments of the present application.As shown in Figure 1,
Pixel-driving circuit provided by the embodiments of the present application, comprising: compensating module 101, receiving module 102, light emitting module 103 and spy
Survey module 104.Compensating module 101, receiving module 102 and detecting module 104 are connect with light emitting module 103.
Wherein, compensating module 101 accesses first control signal X, and compensating module 101 is used for the control in first control signal X
Data-signal Z is transmitted to first node a under system.Receiving module 102 accesses second control signal E, and receiving module 102 is used for
Pass through the current potential that power supply signal VDD stablizes first node a under the control of second control signal E.Detecting module 104 receives third control
Signal Y processed, detecting module 104 are used to that initial signal Pre to be transmitted to second node b under the control of third control signal Y, visit
The virtual voltage that module 104 is also used to detect light emitting module 103 is surveyed, and by virtual voltage compared with predeterminated voltage, to generate hair
The offset voltage of optical module 103.In addition, compensating module 101 is also used under the control of first control signal X, according to compensation electricity
Pressure compensates data-signal Z, and compensated data-signal Z is transmitted to first node a.
Specifically, referring to Fig. 2, Fig. 2 is the circuit diagram of pixel-driving circuit provided by the embodiments of the present application.
Compensating module 101 includes: the first transistor T1.The grid of the first transistor T1 is electrically connected at first control signal
X, the source electrode of the first transistor T1 are electrically connected at data-signal Z, and the drain electrode of the first transistor is electrically connected at first node a.
Receiving module 102 includes: second transistor T2 and electric capacity of voltage regulation C1.The grid of second transistor T2 is electrically connected
In second control signal E, the source electrode of second transistor T2 is electrically connected at power supply signal VDD, the drain electrode electricity of second transistor T2
Property is connected to electric capacity of voltage regulation C1.The first end of electric capacity of voltage regulation C1 is electrically connected at the drain electrode of second transistor T2, electric capacity of voltage regulation C1
Second end be electrically connected at first node a.
Light emitting module 103 includes: third transistor T3, luminescent device D and storage capacitance C2.The grid of third transistor T3
Pole is electrically connected at first node a, and the source electrode of third transistor T2 is electrically connected at power supply signal VDD, third transistor T3's
Drain electrode is electrically connected at second node b, in this application, the third transistor T3 that driving transistor is.The cathode of luminescent device D
End is electrically connected at second node b, and the anode tap of luminescent device D is electrically connected at ground terminal.The first end electricity of storage capacitance C2
Property is connected to first node a, and the second end of storage capacitance C2 is electrically connected at second node b.In some embodiments, this shines
Device D is Organic Light Emitting Diode.
Detecting module 104 includes: the 4th transistor T4, first switch S1, second switch S2 and probe unit 104a.The
The grid of four transistor T4 is electrically connected at third control signal Y, and the source electrode of the 4th transistor T4 is electrically connected at first switch
The drain electrode of S1, the 4th transistor T4 are electrically connected at second node b.The first end of first switch S1 is electrically connected at the 4th crystal
The source electrode of pipe T4, the second end of first switch S1 are electrically connected at initial signal Pre.The first end of second switch S2 is electrically connected
In the source electrode of the 4th transistor T4, the second end of second switch S2 is electrically connected at probe unit 104a.Probe unit 104a is used
In the virtual voltage of detection light emitting module 103, and by virtual voltage compared with predeterminated voltage, to generate the benefit of light emitting module 103
Repay voltage.
In some embodiments, the first transistor T1, second transistor T2, third transistor T3 and the 4th transistor T4
It is N-type transistor.Transistor in pixel-driving circuit provided by the embodiments of the present application is same type of transistor, from
And avoid otherness influence caused by pixel-driving circuit between different types of transistor.
In some embodiments, first control signal X, second control signal E and third control signal Y by it is external when
Sequence device provides.
Pixel-driving circuit is when detecting the mobility of third transistor T3, due to the impedance of different location in display panel
Difference when the first transistor T1 is closed, will lead to the difference of the mobility detection of the third transistor T3 of each point of display panel
Larger, that is, when detecting, the voltage of the grid point of each third transistor T3 is different, passes through the grid point of each third transistor T3
Size of current it is different so that the speed of the leakage summit potential lifting of each third transistor T3 is different, finally detect display
The mobility of the third transistor T3 of panel different location is variant, influences the compensated uniformity of display panel.
For example, traditional pixel-driving circuit detect third transistor T3 mobility when, when mobility is just floated, third
The speed of the leakage summit potential lifting of transistor T3 is different, finally detects the third transistor T3's of display panel different location
Mobility is variant, and the mobility of the third transistor T3 of proximal end is 52.41%, and the mobility of the third transistor T3 of distal end is
51.17%.
For another example, traditional pixel-driving circuit is when detecting the mobility of third transistor T3, when mobility bears drift, the
The speed of the leakage summit potential lifting of three transistor T3 is different, finally detects the third transistor T3 of display panel different location
Mobility it is variant, the mobility of the third transistor T3 of proximal end is 143.1%, the mobility of the third transistor T3 of distal end
It is 148.7%.
For this purpose, increasing by an electric capacity of voltage regulation C1 by the grid in third transistor T3 in this application, in the first transistor
T1 closes front opening second transistor T2, is charged using power supply signal VDD to electric capacity of voltage regulation C1, reduces the first transistor T1 and close
When influence to first node a, to achieve the purpose that improve the uniformity of luminance of luminescent device D, and then promote image quality.
For example, in the pixel-driving circuit of the application, due to there are the current potential that electric capacity of voltage regulation C1 maintains first node a,
Therefore, the pixel-driving circuit of the application drives the speed difference of the leakage summit potential lifting of transistor smaller, when bearing drift, closely
The mobility of the third transistor T3 at end is 51.73%, and the mobility of the third transistor T3 of distal end is 51.48%；When positive drift,
The mobility of the third transistor T3 of proximal end is 144.8%, and the mobility of the third transistor T3 of distal end is 146.1%.Therefore,
In this application, the third transistor T3 of proximal end
Referring to Fig. 3, Fig. 3 is the timing diagram of the driving signal of pixel-driving circuit provided by the present application.The pixel driver
The driver' s timing of circuit includes:
First initial phase t1, initializes the current potential of second node b.
Second initial phase t2, initializes the current potential of first node a.
Detection phase t3 detects the virtual voltage of light emitting module 103, and by virtual voltage compared with predeterminated voltage, with life
At the offset voltage of light emitting module 103.
Compensated stage t4 compensates data-signal Z according to offset voltage.
Light emitting phase t5, pixel-driving circuit generates driving current and is provided to luminescent device D, for driving luminescent device
The luminescence display of D.
Specifically, first control signal X is low potential in the first initial phase t1, second control signal E is low electricity
Position, it is high potential that third, which controls signal Y, and the 4th transistor T4 is opened, and first switch S1 is opened, and initial signal Pre is transmitted to the
Two node b.
It is high potential in the second initial phase t2, first control signal X, second control signal E is high potential, third control
Signal Y processed is high potential, and the first transistor T1 is opened, and second transistor T2 is opened, and third transistor T3 is opened, the 4th transistor
T4 is opened, and first switch S1 is opened, and data-signal Z is transmitted to first node a by the first transistor T1, and power supply signal VDD is logical
The first end that second transistor T2 is transmitted to electric capacity of voltage regulation C1 is crossed, to charge to electric capacity of voltage regulation C1.
It is low potential in the detection phase t3, first control signal X, second control signal E is high potential, third control
Signal Y is high potential, and power supply signal VDD is transmitted to the first end of electric capacity of voltage regulation C1 by second transistor T2, to stablize first
The current potential of node a.When first switch S1 is opened, initial signal Pre is transmitted to second node b by the 4th transistor T4.When
When second switch S2 is opened, detectable signal T is transmitted to second node b by the 4th transistor T4, and probe unit 104a passes through spy
The current potential that signal T detects second node b is surveyed, to detect the virtual voltage of light emitting module 103, and virtual voltage is calculated and presets
Difference between voltage, to obtain the offset voltage of light emitting module 103.
It is high potential in the compensated stage t4, first control signal X, second control signal E is low potential, third control
Signal Y is high potential, and the first transistor T1 is opened, and the first transistor T1 compensates data-signal according to offset voltage.
It is low potential in the light emitting phase t5, first control signal X, the second control signal E is low potential, described
It is low potential that third, which controls signal Y, and the current potential of compensated data-signal Z is kept at first node a, and third transistor T3 is beaten
It opens, power supply signal VDD is transmitted to luminescent device D by third transistor T3, and luminescent device D shines.
Pixel-driving circuit and display panel provided by the present application, using 4T2C structure-pixel driving circuit, in third
The grid of transistor increases by an electric capacity of voltage regulation, reduces influence when third transistor is closed to first node, improves hair to reach
The purpose of the uniformity of luminance of optical device, and then promote image quality.
The above is only embodiments herein, are not intended to limit the scope of the patents of the application, all to be said using the application
Equivalent structure or equivalent flow shift made by bright book and accompanying drawing content is applied directly or indirectly in other relevant technology necks
Domain similarly includes in the scope of patent protection of the application.
Claims (10)
1. a kind of pixel-driving circuit characterized by comprising compensating module, receiving module, light emitting module and detection mould
Block；The compensating module, the receiving module and the detecting module are connect with the light emitting module；
The compensating module accesses first control signal, and the compensating module is used under the control of the first control signal will
Data signal transmission is to first node；
The receiving module accesses second control signal, and the receiving module is used to lead under the control of the second control signal
Cross the current potential that power supply signal stablizes the first node；
The detecting module receives third and controls signal, and the detecting module is used for will be initial under the control of third control signal
Signal is transmitted to second node, and the detecting module is also used to detect the virtual voltage of the light emitting module, and by the reality
Voltage is compared with predeterminated voltage, to generate the offset voltage of the light emitting module；
Wherein, the compensating module is also used under the control of the first control signal, according to the offset voltage to described
Data-signal compensates, and by compensated data signal transmission to the first node.
2. pixel-driving circuit according to claim 1, which is characterized in that the compensating module includes: the first transistor；
The grid of the first transistor is electrically connected at the first control signal, and the source electrode of the first transistor electrically connects
It is connected to the data-signal, the drain electrode of the first transistor is electrically connected at the first node.
3. pixel-driving circuit according to claim 2, which is characterized in that the receiving module includes: second transistor
And electric capacity of voltage regulation；
The grid of the second transistor is electrically connected at the second control signal, and the source electrode of the second transistor electrically connects
It is connected to the power supply signal, the drain electrode of the second transistor is electrically connected at the electric capacity of voltage regulation；
The first end of the electric capacity of voltage regulation is electrically connected at the drain electrode of the second transistor, the second end electricity of the electric capacity of voltage regulation
Property is connected to the first node.
4. pixel-driving circuit according to claim 3, which is characterized in that the light emitting module include: third transistor,
Luminescent device and storage capacitance；
The grid of the third transistor is electrically connected at the first node, and the source electrode of the third transistor is electrically connected at
The power supply signal, the drain electrode of the third transistor are electrically connected at the second node；
The cathode terminal of the luminescent device is electrically connected at the second node, and the anode tap of the luminescent device is electrically connected at
Ground terminal；
The first end of the storage capacitance is electrically connected at the first node, and the second end of the storage capacitance is electrically connected at
The second node.
5. pixel-driving circuit according to claim 4, which is characterized in that the detecting module include: the 4th transistor,
First switch, second switch and probe unit；
The grid of 4th transistor is electrically connected at the third control signal, and the source electrode of the 4th transistor electrically connects
It is connected to the first switch, the drain electrode of the 4th transistor is electrically connected at the second node；
The first end of the first switch is electrically connected at the source electrode of the 4th transistor, the second end electricity of the first switch
Property is connected to the initial signal；
The first end of the second switch is electrically connected at the source electrode of the 4th transistor, the second end electricity of the second switch
Property be connected to the probe unit, the probe unit is used to detect the virtual voltage of the light emitting module, and by the reality
Voltage is compared with predeterminated voltage, to generate the offset voltage of the light emitting module.
6. pixel-driving circuit according to claim 5, which is characterized in that the first transistor, second crystal
Pipe, the third transistor and the 4th transistor are N-type transistor.
7. pixel-driving circuit according to claim 6, which is characterized in that the driver' s timing packet of the pixel-driving circuit
It includes:
First initial phase initializes the current potential of the second node；
Second initial phase initializes the current potential of the first node；
Detection phase detects the virtual voltage of the light emitting module, and by the virtual voltage compared with predeterminated voltage, to generate
The offset voltage of the light emitting module；
Compensated stage compensates the data-signal according to the offset voltage；
Light emitting phase, pixel-driving circuit generates driving current and is provided to the luminescent device, for driving the photophore
The luminescence display of part.
8. pixel-driving circuit according to claim 7, which is characterized in that in first initial phase, described
One control signal is low potential, and the second control signal is low potential, and the third control signal is high potential, described initial
Signal is transmitted to the second node；
In second initial phase, the first control signal is high potential, and the second control signal is high potential, institute
Stating third control signal is high potential, and the data signal transmission to the first node, the power supply signal is transmitted to described
The first end of electric capacity of voltage regulation, to charge to the electric capacity of voltage regulation；
In the detection phase, the first control signal is low potential, and the second control signal is high potential, the third
Control signal is high potential, and the power supply signal is by being transmitted to the first end of the electric capacity of voltage regulation, to stablize the first segment
The current potential of point；When the first switch is opened, the initial signal is transmitted to the second node；When the second switch is beaten
When opening, detectable signal is transmitted to the second node, and the probe unit detects the current potential of the second node, to detect
The virtual voltage of light emitting module is stated, and calculates the difference between the virtual voltage and the predeterminated voltage, it is described to calculate
The offset voltage of light emitting module；
In the compensated stage, the first control signal is high potential, and the second control signal is low potential, the third
Control signal is high potential, and the first transistor compensates the data-signal according to the offset voltage；
In the light emitting phase, the first control signal is low potential, and the second control signal is low potential, the third
Control signal is low potential, and the data signal transmission to first node, the second source signal is transmitted to second node, institute
The current potential that the compensated data-signal is kept at first node is stated, the power supply signal is transmitted to the luminescent device.
9. pixel-driving circuit according to claim 1, which is characterized in that the first control signal, second control
Signal processed and third control signal are provided by external timing device.
10. a kind of display panel, which is characterized in that including the described in any item pixel-driving circuits of claim 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910331944.XA CN109979383B (en) | 2019-04-24 | 2019-04-24 | Pixel driving circuit and display panel |
| PCT/CN2019/114400 WO2020215647A1 (en) | 2019-04-24 | 2019-10-30 | Pixel driving circuit and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910331944.XA CN109979383B (en) | 2019-04-24 | 2019-04-24 | Pixel driving circuit and display panel |
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| CN109979383A true CN109979383A (en) | 2019-07-05 |
| CN109979383B CN109979383B (en) | 2021-04-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110689837A (en) * | 2019-10-29 | 2020-01-14 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN110706650A (en) * | 2019-09-17 | 2020-01-17 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit |
| CN110853582A (en) * | 2019-11-07 | 2020-02-28 | 深圳市华星光电半导体显示技术有限公司 | Pixel, control method thereof and organic light emitting diode display |
| CN110890065A (en) * | 2019-11-01 | 2020-03-17 | 深圳市华星光电半导体显示技术有限公司 | Control method and control device of display panel |
| CN110992897A (en) * | 2019-12-31 | 2020-04-10 | 深圳市华星光电半导体显示技术有限公司 | Display panel driving method, display driving circuit and display panel |
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5952789A (en) * | 1997-04-14 | 1999-09-14 | Sarnoff Corporation | Active matrix organic light emitting diode (amoled) display pixel structure and data load/illuminate circuit therefor |
| JP2004341444A (en) * | 2003-05-19 | 2004-12-02 | Sony Corp | Pixel circuit, display device, and method for driving pixel circuit |
| US20070164959A1 (en) * | 2004-01-07 | 2007-07-19 | Koninklijke Philips Electronic, N.V. | Threshold voltage compensation method for electroluminescent display devices |
| US20080150847A1 (en) * | 2006-12-21 | 2008-06-26 | Hyung-Soo Kim | Organic light emitting display |
| CN101960509A (en) * | 2008-07-04 | 2011-01-26 | 松下电器产业株式会社 | Display device and method for controlling the same |
| CN102598108A (en) * | 2009-11-06 | 2012-07-18 | 夏普株式会社 | Pixel circuit and display device |
| CN102891183A (en) * | 2012-10-25 | 2013-01-23 | 深圳市华星光电技术有限公司 | Thin film transistor and active matrix type flat panel display device |
| CN103050082A (en) * | 2011-10-14 | 2013-04-17 | 乐金显示有限公司 | Light emitting display device |
| CN103077662A (en) * | 2011-10-04 | 2013-05-01 | 乐金显示有限公司 | Organic light-emitting display device |
| CN203179479U (en) * | 2013-04-26 | 2013-09-04 | 京东方科技集团股份有限公司 | Pixel unit circuit and display apparatus |
| CN103700695A (en) * | 2013-12-25 | 2014-04-02 | 深圳市华星光电技术有限公司 | Low-temperature polycrystalline silicon film as well as preparation method thereof and transistor |
| CN105047137A (en) * | 2015-09-09 | 2015-11-11 | 深圳市华星光电技术有限公司 | AMOLED real-time compensation system |
| CN105185300A (en) * | 2015-08-03 | 2015-12-23 | 深圳市华星光电技术有限公司 | Amoled pixel driving circuit and pixel driving method |
| CN105448238A (en) * | 2014-09-19 | 2016-03-30 | 乐金显示有限公司 | Organic light emitting display device |
| CN106297662A (en) * | 2016-09-09 | 2017-01-04 | 深圳市华星光电技术有限公司 | AMOLED pixel-driving circuit and driving method |
| CN106910459A (en) * | 2017-04-26 | 2017-06-30 | 上海天马有机发光显示技术有限公司 | A kind of organic electroluminescence display panel, its driving method and display device |
| US20180082636A1 (en) * | 2016-04-12 | 2018-03-22 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Amoled pixel driving circuit and pixel driving method |
| CN107863071A (en) * | 2016-09-22 | 2018-03-30 | 乐金显示有限公司 | Organic light-emitting display device |
| CN108154834A (en) * | 2018-03-15 | 2018-06-12 | 京东方科技集团股份有限公司 | The cross-pressure detection method of electroluminescence display panel and luminescent device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102013377B1 (en) * | 2013-08-19 | 2019-10-21 | 엘지디스플레이 주식회사 | Organic Light Emitting Display Device and Driving Method thereof |
| KR102053444B1 (en) * | 2013-11-06 | 2019-12-06 | 엘지디스플레이 주식회사 | Organic Light Emitting Display And Mobility Compensation Method Thereof |
| KR102281007B1 (en) * | 2014-09-01 | 2021-07-26 | 엘지디스플레이 주식회사 | Organic Light Emitting Display Device |
| CN106782324B (en) * | 2017-02-17 | 2019-03-22 | 京东方科技集团股份有限公司 | Pixel circuit and its driving method, display device |
| CN109979383B (en) * | 2019-04-24 | 2021-04-02 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
-
2019
- 2019-04-24 CN CN201910331944.XA patent/CN109979383B/en active Active
- 2019-10-30 WO PCT/CN2019/114400 patent/WO2020215647A1/en active Application Filing
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5952789A (en) * | 1997-04-14 | 1999-09-14 | Sarnoff Corporation | Active matrix organic light emitting diode (amoled) display pixel structure and data load/illuminate circuit therefor |
| JP2004341444A (en) * | 2003-05-19 | 2004-12-02 | Sony Corp | Pixel circuit, display device, and method for driving pixel circuit |
| US20070164959A1 (en) * | 2004-01-07 | 2007-07-19 | Koninklijke Philips Electronic, N.V. | Threshold voltage compensation method for electroluminescent display devices |
| US20080150847A1 (en) * | 2006-12-21 | 2008-06-26 | Hyung-Soo Kim | Organic light emitting display |
| CN101960509A (en) * | 2008-07-04 | 2011-01-26 | 松下电器产业株式会社 | Display device and method for controlling the same |
| CN102598108A (en) * | 2009-11-06 | 2012-07-18 | 夏普株式会社 | Pixel circuit and display device |
| CN103077662A (en) * | 2011-10-04 | 2013-05-01 | 乐金显示有限公司 | Organic light-emitting display device |
| CN103050082A (en) * | 2011-10-14 | 2013-04-17 | 乐金显示有限公司 | Light emitting display device |
| CN102891183A (en) * | 2012-10-25 | 2013-01-23 | 深圳市华星光电技术有限公司 | Thin film transistor and active matrix type flat panel display device |
| CN203179479U (en) * | 2013-04-26 | 2013-09-04 | 京东方科技集团股份有限公司 | Pixel unit circuit and display apparatus |
| CN103700695A (en) * | 2013-12-25 | 2014-04-02 | 深圳市华星光电技术有限公司 | Low-temperature polycrystalline silicon film as well as preparation method thereof and transistor |
| CN105448238A (en) * | 2014-09-19 | 2016-03-30 | 乐金显示有限公司 | Organic light emitting display device |
| CN105185300A (en) * | 2015-08-03 | 2015-12-23 | 深圳市华星光电技术有限公司 | Amoled pixel driving circuit and pixel driving method |
| CN105047137A (en) * | 2015-09-09 | 2015-11-11 | 深圳市华星光电技术有限公司 | AMOLED real-time compensation system |
| US20180082636A1 (en) * | 2016-04-12 | 2018-03-22 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Amoled pixel driving circuit and pixel driving method |
| CN106297662A (en) * | 2016-09-09 | 2017-01-04 | 深圳市华星光电技术有限公司 | AMOLED pixel-driving circuit and driving method |
| CN107863071A (en) * | 2016-09-22 | 2018-03-30 | 乐金显示有限公司 | Organic light-emitting display device |
| CN106910459A (en) * | 2017-04-26 | 2017-06-30 | 上海天马有机发光显示技术有限公司 | A kind of organic electroluminescence display panel, its driving method and display device |
| CN108154834A (en) * | 2018-03-15 | 2018-06-12 | 京东方科技集团股份有限公司 | The cross-pressure detection method of electroluminescence display panel and luminescent device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215647A1 (en) * | 2019-04-24 | 2020-10-29 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN110706650A (en) * | 2019-09-17 | 2020-01-17 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit |
| CN110689837A (en) * | 2019-10-29 | 2020-01-14 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| WO2021082197A1 (en) * | 2019-10-29 | 2021-05-06 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN110689837B (en) * | 2019-10-29 | 2023-11-28 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN110890065A (en) * | 2019-11-01 | 2020-03-17 | 深圳市华星光电半导体显示技术有限公司 | Control method and control device of display panel |
| CN110853582A (en) * | 2019-11-07 | 2020-02-28 | 深圳市华星光电半导体显示技术有限公司 | Pixel, control method thereof and organic light emitting diode display |
| CN110853582B (en) * | 2019-11-07 | 2021-02-23 | 深圳市华星光电半导体显示技术有限公司 | Pixel, control method thereof and organic light emitting diode display |
| CN110992897A (en) * | 2019-12-31 | 2020-04-10 | 深圳市华星光电半导体显示技术有限公司 | Display panel driving method, display driving circuit and display panel |
| CN110992897B (en) * | 2019-12-31 | 2021-03-16 | 深圳市华星光电半导体显示技术有限公司 | Display panel driving method, display driving circuit and display panel |
| CN112365846A (en) * | 2020-11-12 | 2021-02-12 | 深圳市华星光电半导体显示技术有限公司 | Pixel circuit and display device |
| CN112365846B (en) * | 2020-11-12 | 2021-10-08 | 深圳市华星光电半导体显示技术有限公司 | Pixel circuit and display device |
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|---|---|
| CN109979383B (en) | 2021-04-02 |
| WO2020215647A1 (en) | 2020-10-29 |
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