CN110232889A - Pixel-driving circuit and display panel - Google Patents
Pixel-driving circuit and display panel Download PDFInfo
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- CN110232889A CN110232889A CN201910382279.7A CN201910382279A CN110232889A CN 110232889 A CN110232889 A CN 110232889A CN 201910382279 A CN201910382279 A CN 201910382279A CN 110232889 A CN110232889 A CN 110232889A
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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]
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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
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- 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, effective compensation is carried out to the threshold voltage of the driving transistor in each pixel using the pixel-driving circuit of 4T1C structure, and, the driving current of luminescent device is not influenced by the first power supply signal, therefore, the luminous stability of luminescent device is improved, and then improves 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).
Due to the limitation of crystallization process, the low-temperature polysilicon film transistor made in large-area glass substrate, often
Often there is on the electrical parameters such as threshold voltage, mobility heterogeneity.Therefore, pixel-driving circuit can be mended
It repays.However existing pixel compensation circuit, there are a deficiency, driving current is related to power supply signal, the pressure drop meeting of power supply signal
Driving current is influenced, causes shining for luminescent device unstable, and then influences image quality.
Summary of the invention
The embodiment of the present application provides a kind of pixel-driving circuit and display panel, can compensate for the threshold value of driving transistor
Voltage change improves the uniformity of luminance of luminescent device, and then promotes image quality.
In a first aspect, this application provides a kind of pixel-driving circuits, comprising: reseting module, compensating module, data write-in
Module and light emitting module；The reseting module, the Data write. module and the light emitting module with the compensating module
Connection；
The reseting module accesses first control signal, and the reseting module is used for the control in the first control signal
It is lower that reset signal is transmitted to the light emitting module to carry out first time reset to the light emitting module；
The Data write. module accesses the first control signal, and the Data write. module is used in first control
Under the control of signal processed, and second is carried out to the light emitting module by the reference potential of data-signal and is resetted；
The compensating module accesses second control signal, and the compensating module is used for the control in the second control signal
Lower acquisition threshold voltage；
The Data write. module is also used to the display current potential under the control of the first control signal by data-signal
It is transmitted to the compensating module.
In pixel-driving circuit provided herein, the reseting module includes: the first transistor；
The grid of the first transistor is electrically connected at the first control signal, the drain electrode electricity of the first transistor
Property is connected to the reset signal, and the source electrode of the first transistor is electrically connected at first node.
In pixel-driving circuit provided herein, the compensating module includes: second transistor and storage electricity
Hold；
The grid of the second transistor is electrically connected at the second control signal, the drain electrode electricity of the second transistor
Property is connected to the first node, and the source electrode of the third transistor is electrically connected at second node；
The first end of the storage capacitance is electrically connected at Data write. module, and the second end of the storage capacitance electrically connects
It is connected to the second node.
In pixel-driving circuit provided herein, the Data write. module includes: third transistor；
The grid of the third transistor is electrically connected at the first control signal, the drain electrode electricity of the third transistor
Property is connected to the data-signal, and the source electrode of the third transistor is electrically connected at the first end of the storage capacitance.
In pixel-driving circuit provided herein, the light emitting module includes: luminescent device and the 4th crystal
Pipe；
The anode of the luminescent device is electrically connected at the first power supply signal, and the cathode of the luminescent device is electrically connected at
The first node；
The grid of 4th transistor is electrically connected at the second node, and the drain electrode of the 4th transistor electrically connects
It is connected to the first node, the source electrode of the 4th transistor is electrically connected at second source signal.
In pixel-driving circuit provided herein, the first transistor, the second transistor, the third
Transistor and the 4th transistor are NMOS tube.
In pixel-driving circuit provided herein, the driver' s timing of the pixel-driving circuit includes:
The current potential of reseting stage, current potential and the second node to the first node resets；
Threshold voltage obtains the stage, grabs the threshold voltage of the 4th transistor and stores to the storage capacitance
The first end of the storage capacitance is written in the data-signal by data write phase, and according to the storage electricity
The coupling of appearance, the jump in potential of the second end of the storage capacitance to corresponding current potential；
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 herein, in the reseting stage, the first control signal is high electricity
Position, the second control signal are low potential, and the reset signal is transmitted to the first node by the second transistor,
The data-signal is transmitted to the first end of the storage capacitance, the current potential root of the second node by the first transistor
Current potential corresponding to the data-signal is jumped according to the coupling of the storage capacitance；
The stage is obtained in threshold voltage, the first control signal is low potential, and the second control signal is high potential,
First power supply signal charges to the storage capacitance by the third transistor, until the 4th transistor
Pressure difference between grid and source electrode ends when being equal to the threshold voltage of the 4th transistor；
In data write phase, the first control signal is high potential, and the second control signal is low potential, described
Data-signal is transmitted to the first end of the storage capacitance by the first transistor, and the current potential of the first node is according to institute
The coupling for stating storage capacitance jumps corresponding current potential；
In the light emitting phase, the first control signal is low potential, and the second control signal is low potential, described
Power supply signal is transmitted to the cathode of the luminescent device by the anode of luminescent device, and the luminescent device shines.
In pixel-driving circuit provided herein, the first control signal and the second control signal are equal
It is provided by external timing device.
In pixel-driving circuit provided herein, the electric current and the 4th transistor of the luminescent device are flowed through
Threshold voltage it is unrelated.
Second aspect, the application provide a kind of display panel, the pixel-driving circuit including the application any embodiment.
Pixel-driving circuit and display panel provided by the present application, using the pixel-driving circuit of 4T1C structure to each
The threshold voltage of driving transistor in pixel carries out effective compensation, also, the driving current of luminescent device is not by the first power supply
The influence of signal, this improves the stability that luminescent device shines, and then improve 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.
Refering to fig. 1, Fig. 1 is the structural schematic diagram of pixel-driving circuit provided by the invention.As shown in Figure 1, the pixel is driven
Dynamic circuit, comprising: reseting module 101, compensating module 102, Data write. module 103 and light emitting module 104.Reseting module 101,
Data write. module 103 and light emitting module 104 are connect with compensating module 102.
Wherein, reseting module 101 accesses first control signal Y, and reseting module 101 is used for the control in first control signal Y
Reset signal R is transmitted to light emitting module 103 to carry out first time reset to light emitting module 103 under system.Data write. module 103
First control signal Y is accessed, Data write. module 103 is used under the control of first control signal Y, and passes through data-signal D
Reference potential second carried out to light emitting module 104 reset.Compensating module 102 accesses second control signal E, compensating module
102 obtain threshold voltage for data-signal D to be written under the control of second control signal E.Data write. module 103 is also used to
The display current potential of data-signal D is transmitted to compensating module 102 under the control of first control signal Y.
Specifically, referring to Fig. 2, Fig. 2 is the circuit diagram of pixel-driving circuit provided by the invention.
Reseting module 101 includes: the first transistor T1.The grid of the first transistor T1 is electrically connected at first control signal
Y, the drain electrode of the first transistor T1 are electrically connected at reset signal R, and the source electrode of the first transistor T1 is electrically connected at first node
a。
Compensating module 102 includes: second transistor T2 and storage capacitance C.The grid of second transistor T2 is electrically connected
In second control signal E, the drain electrode of second transistor T2 is electrically connected at first node a, and the source electrode of second transistor T2 is electrical
It is connected to second node b.The first end of storage capacitance C is electrically connected at Data write. module 103, the second end of storage capacitance C
It is electrically connected at second node b.
Data write. module 103 includes: third transistor.The grid of third transistor T3 is electrically connected at the first control letter
Number Y, the drain electrode of third transistor T3 are electrically connected at data-signal D, and the source electrode of third transistor T3 is electrically connected at storage electricity
Hold the first end of C.
Light emitting module 104 includes: luminescent device L and the 4th transistor T4.The anode of luminescent device L is electrically connected at
One power supply signal Y, the cathode of luminescent device L are electrically connected at the first node a.4th transistor T4 is driving transistor,
The grid of 4th transistor T4 is electrically connected at second node b, and the drain electrode of the 4th transistor T4 is electrically connected at first node a,
The source electrode of 4th transistor T4 is electrically connected at second source signal W.
Further, the first transistor T1 is for resetting the cathode of luminescent device L, and second transistor T3 is for grabbing
The threshold voltage of the 4th transistor T4 is taken, third transistor T2 passes through and deposits for resetting to the first end of storage capacitance C
The coupling that storage holds C resets second node b, that is, by the coupling of storage capacitance C to the 4th transistor T4
Grid resetted, the 4th transistor T4 makes luminescent device L shine for generating driving current and be provided to luminescent device L.
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.
Referring to Fig. 3, Fig. 3 is the timing diagram of the driving signal of pixel-driving circuit provided by the invention.The pixel driver
The driver' s timing of circuit includes:
The current potential of reseting stage t1, current potential and second node b to first node a reset.
Threshold voltage obtains stage t2, grabs the threshold voltage vt h of the 4th transistor T4 and stores to the storage capacitance
On
Data write phase t3, by the first end of data-signal D write-in storage capacitance C, and according to the coupling of storage capacitance C
Effect, the jump in potential of the second end of storage capacitance C to corresponding current potential.
Light emitting phase t4, pixel-driving circuit generates driving current and is provided to luminescent device L, for driving luminescent device
The luminescence display of L.
It should be noted that in some embodiments, first control signal Y and second control signal E by it is external when
Sequence device provides.
It wherein, is high potential in reseting stage t1, first control signal Y, second control signal E is low potential, and first is brilliant
Body pipe T1 conducting, second transistor T2 conducting, reset signal R are transmitted to first node a by the first transistor T1, eliminate upper one
Stage remains in the signal of luminescent device L, and to reset luminescent device L, data-signal D is transmitted to storage by second transistor T2
The first end of capacitor C, due to the coupling of storage capacitance C, the current potential of the second end of storage capacitance C is raised to corresponding electricity
Position, the i.e. current potential of second node b are raised to corresponding current potential, so that the 4th transistor T4 is connected.
It is referred to that is, reseting module 101 reset for the first time to light emitting module 104: in reseting module 101
The first transistor T1 resets first node a, to reset the luminescent device L in light emitting module 104.Data write. module
103, which carry out second of reset to light emitting module 104 by the reference potential of data-signal D, refers to: in Data write. module 103
Third transistor T3 second node b is resetted by the reference potential of data-signal D.
For example, the current potential of first control signal is 22V in reseting stage t1, the current potential of second control signal is -8V.The
One transistor T1 conducting, second transistor T2 conducting, reset signal R are transmitted to first node a by the first transistor T1, eliminate
Remain in the signal of luminescent device L on last stage, to reset luminescent device L, the reference potential of data-signal D passes through the second crystal
Pipe T2 is transmitted to the first end of storage capacitance C, and the reference potential of data-signal D can be 0V.Since the coupling of storage capacitance C is made
With the current potential of the second end of storage capacitance C is raised to corresponding current potential, i.e. the current potential of second node b, which is raised to, can make the 4th
Current potential is connected in transistor T4, it should be noted that the 4th transistor T4 can be transistor of the same race with third transistor T3, that is,
When the current potential of the 4th transistor T4 grid is greater than -8V, the 4th transistor turns.That is, in some embodiments, second node b
Current potential can be raised to the reference potential 0V of data-signal D, thus the 4th transistor T4 of conducting.
Stage t2 is obtained in threshold voltage, first control signal Y is low potential, and second control signal E is high potential, third
Transistor T3 conducting, the 4th transistor T4 conducting, the first power supply signal H fill storage capacitance by third transistor T3
Electricity, until the pressure difference between the grid and source electrode of the 4th transistor T4 ends when being equal to the threshold voltage vt h of the 4th transistor, the
The current potential of four transistor T4 source electrodes is the current potential Vw of second source signal W, that is, when the 4th transistor T4 ends, the 4th transistor
The current potential of the grid of T4 is equal to Vw+ | Vth |.
For example, the current potential of first control signal Y is 0V, the current potential of second control signal E is 22V, and third transistor T3 is led
Logical, the 4th transistor T4 conducting, the first power supply signal H charges to storage capacitance by third transistor T3, until the 4th
Pressure difference between the grid and source electrode of transistor T4 ends when being equal to the threshold voltage vt h of the 4th transistor, the 4th transistor T4
The current potential of source electrode is the current potential Vw of second source signal W, that is, when the 4th transistor T4 ends, the grid of the 4th transistor T4
Current potential is equal to Vw+ | Vth |.
It is high potential in data write phase t3, first control signal Y, second control signal E is low potential, first crystal
Pipe T1 conducting, second transistor T2 conducting, data-signal D are transmitted to the first end of storage capacitance C by second transistor T2, the
The current potential of two node b jumps corresponding current potential according to the coupling of storage capacitance C, the current potential Vd+Vw+ of second node b | Vth |,
That is, the current potential of the grid of the 4th transistor T4 is Vd+Vw+ | Vth |.
For example, the current potential of first control signal Y is 22V, the current potential of second control signal E is -8V, and the first transistor T1 is led
Logical, second transistor T2 conducting, the display current potential of data-signal D is transmitted to the first of storage capacitance C by second transistor T2
The display current potential at end, data-signal D can be 8V, and the current potential of second node b is jumped according to the coupling of storage capacitance C to number
It is believed that the display current potential 8V of number D.
It is low potential in the light emitting phase t4, first control signal Y, second control signal E is low potential, the 4th crystal
Pipe T4 conducting, due to the coupling of storage capacitance C, the current potential Vd+Vw+ of second node b | Vth |, that is, the 4th transistor T4's
The current potential of grid is Vd+Vw+ | Vth |, the first power supply signal H is transmitted to the cathode of luminescent device by the anode of luminescent device L,
That is, the first power supply signal H is transmitted to first node a by luminescent device L, that is, the drain potential of the 4th transistor T4 is first
The current potential Vh of power supply signal H.At this point, the driving current Id of the gate source voltage corresponding to the 4th transistor T4 is supplied to photophore
Part D causes luminescent device D to shine, and the driving current Id that the 4th transistor T4 is generated is indicated by following equation:
Id=k (Vgs-Vth) 2=k [Vd+Vw+ | Vth |-Vw)-| Vth |] 2=k (Vd) 2.
In this equation, Id indicates to flow through the electric current of luminescent device D, and Vgs indicates the gate source voltage of the 4th transistor T4,
Vth indicates that the threshold voltage of the 4th transistor T4, Vd indicate that the current potential of data-signal Z, k indicate constant.It is analyzed from above formula:
The driving current Id of the pixel compensation circuit will be unrelated with Vth and Vw.Therefore, the luminous stability of luminescent device is improved, in turn
Improve image quality.
Pixel-driving circuit and display panel provided by the present application, using the pixel-driving circuit of 4T1C structure to each
The threshold voltage of driving transistor in pixel carries out effective compensation, also, the driving current of luminescent device is not by the first power supply
The influence of signal, this improves the stability that luminescent device shines, and then improve 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 reseting module, compensating module, Data write. module and luminous mould
Block；The reseting module, the Data write. module and the light emitting module are connect with the compensating module；
The reseting module accesses first control signal, and the reseting module is used under the control of the first control signal will
Reset signal is transmitted to the light emitting module to carry out first time reset to the light emitting module；
The Data write. module accesses the first control signal, and the Data write. module is used in the first control letter
Number control under, and second is carried out to the light emitting module by the reference potential of data-signal and is resetted；
The compensating module accesses second control signal, and the compensating module under the control of the second control signal for obtaining
Take threshold voltage；
The Data write. module is also used to transmit the display current potential of data-signal under the control of the first control signal
To the compensating module.
2. pixel-driving circuit according to claim 1, which is characterized in that the reseting module includes: the first transistor；
The grid of the first transistor is electrically connected at the first control signal, and the drain electrode of the first transistor electrically connects
It is connected to the reset signal, the source electrode of the first transistor is electrically connected at first node.
3. pixel-driving circuit according to claim 2, which is characterized in that the compensating module includes: second transistor
And storage capacitance；
The grid of the second transistor is electrically connected at the second control signal, and the drain electrode of the second transistor electrically connects
It is connected to the first node, the source electrode of the third transistor is electrically connected at second node；
The first end of the storage capacitance is electrically connected at Data write. module, and the second end of the storage capacitance is electrically connected at
The second node.
4. pixel-driving circuit according to claim 3, which is characterized in that the Data write. module includes: third crystalline substance
Body pipe；
The grid of the third transistor is electrically connected at the first control signal, and the drain electrode of the third transistor electrically connects
It is connected to the data-signal, the source electrode of the third transistor is electrically connected at the first end of the storage capacitance.
5. pixel-driving circuit according to claim 4, which is characterized in that the light emitting module include: luminescent device with
And the 4th transistor；
The anode of the luminescent device is electrically connected at the first power supply signal, and the cathode of the luminescent device is electrically connected at described
First node；
The grid of 4th transistor is electrically connected at the second node, and the drain electrode of the 4th transistor is electrically connected at
The source electrode of the first node, the 4th transistor is electrically connected at second source signal.
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:
The current potential of reseting stage, current potential and the second node to the first node resets；
Threshold voltage obtains the stage, grabs the threshold voltage of the 4th transistor and stores to the storage capacitance；
The first end of the storage capacitance is written in the data-signal by data write phase, and according to the storage capacitance
Coupling, the jump in potential of the second end of the storage capacitance to corresponding current potential；
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 the reseting stage, first control
Signal is high potential, and the second control signal is low potential, and the reset signal is transmitted to institute by the second transistor
State first node, the data-signal is transmitted to the first end of the storage capacitance by the first transistor, and described second
The current potential of node jumps current potential corresponding to the data-signal according to the coupling of the storage capacitance；
The stage is obtained in threshold voltage, the first control signal is low potential, and the second control signal is high potential, described
First power supply signal charges to the storage capacitance by the third transistor, until the grid of the 4th transistor
Pressure difference between source electrode ends when being equal to the threshold voltage of the 4th transistor；
In data write phase, the first control signal is high potential, and the second control signal is low potential, the data
Signal is transmitted to the first end of the storage capacitance by the first transistor, and the current potential of the first node is deposited according to
The coupling that storage is held jumps corresponding current potential；
In the light emitting phase, the first control signal is low potential, and the second control signal is low potential, the power supply
Signal is transmitted to the cathode of the luminescent device by the anode of luminescent device, and the luminescent device shines.
9. pixel-driving circuit according to claim 1, which is characterized in that the first control signal and described second
Control signal is 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 |
|---|---|---|---|
| CN201910382279.7A CN110232889B (en) | 2019-05-09 | 2019-05-09 | Pixel driving circuit and display panel |
| PCT/CN2019/112960 WO2020224196A1 (en) | 2019-05-09 | 2019-10-24 | Pixel drive circuit and display panel |
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|---|---|---|---|
| CN201910382279.7A CN110232889B (en) | 2019-05-09 | 2019-05-09 | Pixel driving circuit and display panel |
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| CN110232889B CN110232889B (en) | 2021-07-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111063295A (en) * | 2019-12-31 | 2020-04-24 | 深圳市华星光电半导体显示技术有限公司 | Driving device and driving method of light emitting diode array panel |
| WO2020224196A1 (en) * | 2019-05-09 | 2020-11-12 | 深圳市华星光电半导体显示技术有限公司 | Pixel drive circuit and display panel |
| CN113284462A (en) * | 2021-05-31 | 2021-08-20 | 深圳市华星光电半导体显示技术有限公司 | Pixel compensation circuit, method and display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112669775B (en) * | 2020-12-30 | 2024-04-19 | 视涯科技股份有限公司 | Display panel, driving method and display device |
| CN114299847B (en) * | 2021-12-23 | 2023-06-02 | 深圳市华星光电半导体显示技术有限公司 | Light emitting device driving circuit and display panel |
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Also Published As
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| CN110232889B (en) | 2021-07-06 |
| WO2020224196A1 (en) | 2020-11-12 |
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