CN109887465A - Pixel-driving circuit and display panel - Google Patents
Pixel-driving circuit and display panel Download PDFInfo
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- CN109887465A CN109887465A CN201910173540.2A CN201910173540A CN109887465A CN 109887465 A CN109887465 A CN 109887465A CN 201910173540 A CN201910173540 A CN 201910173540A CN 109887465 A CN109887465 A CN 109887465A
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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
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
Abstract
Pixel-driving circuit and display panel provided by the embodiments of 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 3T1C structure, the collocation structure of the pixel-driving circuit is relatively simple, to not need to occupy a large amount of areas in design.
Description
Technical field
This application involves field of display technology, and in particular to a kind of pixel-driving circuit and display panel.
Background technique
OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) display panel have high brightness,
It the advantages that wide viewing angle, fast response time, low-power consumption, has been widely used in high-performance display field at present.Wherein, exist
In OLED display panel, pixel be configured to include multirow, multiple row it is rectangular, each pixel is generallyd use by two crystal
Guan Yuyi capacitor is constituted, and is commonly called as 2T1C circuit, but transistor has threshold voltage shift, and therefore, OLED pixel drives
Dynamic circuit needs corresponding collocation structure.Currently, the collocation structure of OLED pixel driving circuit is complex, in design layout
A large amount of areas are occupied, the design of high PPI (Pixels Per Inch, pixel density) display panel is unfavorable for.
Summary of the invention
The embodiment of the present application is designed to provide a kind of pixel-driving circuit and display panel, is able to solve existing picture
The technical issues of collocation structure of plain driving circuit is complex, occupies a large amount of areas in design layout.
The embodiment of the present application provides a kind of pixel-driving circuit, comprising: the first transistor, second transistor, third crystal
Pipe, capacitor and luminescent device；
The grid of the first transistor is electrically connected at control signal, and the source electrode of the first transistor is electrically connected at
The drain electrode of data-signal, the first transistor is electrically connected at first node；
The grid of the second transistor is electrically connected at the first node, and the source electrode of the second transistor electrically connects
It is connected to the first power supply signal, the drain electrode of the second transistor is electrically connected at second node；
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 second source signal, the drain electrode of the third transistor is electrically connected at the second node；
The first end of the capacitor is electrically connected at the first node, and the second end of the capacitor is electrically connected at described
Second node；
The anode tap of the luminescent device is electrically connected at the second node, and the cathode terminal of the luminescent device electrically connects
It is connected to ground terminal.
In pixel-driving circuit described herein, the control signal, the data-signal, first power supply letter
Number and the second source signal be combined successively correspond to initial phase, threshold voltage detection-phase, threshold voltage mend
Repay stage and light emitting phase；The data-signal includes with reference to low potential and display high potential；The second source signal
Including the first current potential and the second current potential, first current potential is less than second current potential；The current potential etc. of first power supply signal
In second current potential.
In pixel-driving circuit described herein, in the initial phase, the control signal is high potential, institute
Stating the first power supply signal is first current potential, and the second source signal is second current potential, and the data-signal is institute
It states with reference to low potential.
In pixel-driving circuit described herein, in the threshold voltage detection-phase, the control signal is height
Current potential, first power supply signal are second current potential by first jump in potential, and the second source signal is described
Second current potential, the data-signal are described with reference to low potential.
In pixel-driving circuit described herein, in the threshold voltage compensation stage, the control signal is height
Current potential, first power supply signal are second current potential, and the second source signal is second current potential, the data letter
Number be the display high potential.
In pixel-driving circuit described herein, in the light emitting phase, the control signal is low potential, described
First power supply signal is second current potential, and the second source signal is second current potential, and the data-signal is described
With reference to low potential.
In pixel-driving circuit described herein, the first transistor, the second transistor and described
Three transistors are low-temperature polysilicon film transistor, oxide semiconductor thin-film transistor or amorphous silicon film transistor.
In pixel-driving circuit described herein, the electric current and the second transistor of the luminescent device are flowed through
Threshold voltage is unrelated.
In pixel-driving circuit described herein, the luminescent device is Organic Light Emitting Diode.
The embodiment of the present application also provides a kind of display panel, including above-described pixel-driving circuit.
Pixel-driving circuit and display panel provided by the embodiments of the present application, using the pixel-driving circuit pair of 3T1C structure
The threshold voltage of driving transistor in each pixel carries out effective compensation, and the collocation structure of the pixel-driving circuit is more simple
It is single, to not need to occupy a large amount of areas in design.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those skilled in the art, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of pixel-driving circuit provided by the embodiments of the present application；
Fig. 2 is the timing diagram of pixel-driving circuit provided by the embodiments of the present application；
Fig. 3 is the initial phase under the driver' s timing for applying for that the pixel-driving circuit that embodiment provides is shown in Fig. 2
Access schematic diagram；
Fig. 4 is the threshold voltage detection under the driver' s timing for applying for that the pixel-driving circuit that embodiment provides is shown in Fig. 2
The access schematic diagram in stage；
Fig. 5 is the threshold voltage compensation under the driver' s timing for applying for that the pixel-driving circuit that embodiment provides is shown in Fig. 2
The access schematic diagram in stage；
Fig. 6 is the logical of the light emitting phase under the driver' s timing for applying for that the pixel-driving circuit that embodiment provides is shown in Fig. 2
Road schematic diagram.
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: the first transistor T1, second transistor T2, third transistor T3, electricity
Hold C and luminescent device OLED, luminescent device OLED can be Organic Light Emitting Diode.That is, the embodiment of the present application uses
The pixel-driving circuit of 3T1C structure carries out effective compensation to the threshold voltage of the driving transistor in each pixel, has used less
Component, simple and stable structure saved cost.Second transistor T2 in the pixel-driving circuit is driving transistor.
Wherein, the grid of the first transistor T1 is electrically connected at control signal S1, and the source electrode of the first transistor T1 electrically connects
It is connected to data-signal D, the drain electrode of the first transistor T1 is electrically connected at first node g.The grid of second transistor T2 electrically connects
It is connected to first node g, the source electrode of second transistor T2 is electrically connected at the first power supply signal Vdd1, the drain electrode of second transistor T2
It is electrically connected at second node s.The grid of third transistor T3 is electrically connected at first node g, the source electrode of third transistor T3
It is electrically connected at second source signal Vdd2, the drain electrode of third transistor T3 is electrically connected at second node s.The first of capacitor C
End is electrically connected at first node g, and the second end of capacitor C is electrically connected at second node s.The anode tap electricity of luminescent device OLED
Property is connected to second node s, and the cathode terminal of luminescent device OLED is electrically connected at ground terminal.
In some embodiments, the first transistor T1, second transistor T2 and third transistor T3 are low-temperature polysilicon
Silicon thin film transistor, oxide semiconductor thin-film transistor or amorphous silicon film transistor.Pixel provided by the embodiments of the present application
Transistor in driving circuit is same type of transistor, to avoid the otherness pair between different types of transistor
It is influenced caused by pixel-driving circuit.
Referring to Fig. 2, Fig. 2 is the timing diagram of pixel-driving circuit provided by the embodiments of the present application.As shown in Fig. 2, control
Signal S1, data-signal D, the first power supply signal Vdd1 and second source signal Vdd2, which are combined, successively corresponds to initialization rank
Section t1, threshold voltage detection-phase t2, threshold voltage compensation stage t3 and light emitting phase t4.Data-signal D includes with reference to low
Current potential Vref and display high potential Vdata.Second source signal Vdd2 includes the first current potential V1 and the second current potential V2, the first electricity
Position V1 is less than the second current potential V2.The current potential of first power supply signal Vdd1 is equal to the second current potential V2.
In some embodiments, in initial phase t1, control signal S1 is high potential, and the first power supply signal Vdd1 is the
One current potential V1, second source signal Vdd2 are the second current potential V2, and data-signal D is with reference to low potential Vref.
It in some embodiments, is high potential, the first power supply signal in threshold voltage detection-phase t2, control signal S1
Vdd1 is the second current potential V2 by the first current potential V1 jump, and second source signal Vdd2 is the second current potential V2, and data-signal D is reference
Low potential Vref.
It in some embodiments, is high potential, the first power supply signal in threshold voltage compensation stage t3, control signal S1
Vdd1 is the second current potential V2, and second source signal Vdd2 is the second current potential V2, and data-signal D is display high potential Vdata.
It in some embodiments, is low potential in light emitting phase t4, control signal S1, the first power supply signal Vdd1 is second
Current potential V2, second source signal Vdd2 are the second current potential V2, and data-signal D is with reference to low potential Vref.
Specifically, referring to Fig. 3, Fig. 3 is the driver' s timing for applying for that the pixel-driving circuit that embodiment provides is shown in Fig. 2
Under initial phase access schematic diagram.Firstly, in initial phase t1, controlling signal S1 is height in conjunction with shown in Fig. 2, Fig. 3
Current potential, the first transistor T1 are opened, and data-signal D is with reference to low potential Vref, that is, the low electricity of the reference of data-signal D at this time
Position Vref is exported to first node g.It should be noted that the reference low potential Vref of data-signal D need to be arranged to allow at this time
The current potential that two-transistor T2 and third transistor T3 is opened.That is, at this point, second transistor T2 and third transistor T3 are opened,
Since the first power supply signal Vdd1 is the second current potential V2, second source signal Vdd2 is the first current potential V1, and the first current potential V1 is small
In the second current potential V2, therefore, second source signal Vdd2 charges to second node s, until the current potential of second node s is equal to the first electricity
Position V1.
In initial phase t1t1, the current potential of the current potential of first node g and second node s can according to the following formula into
Row setting: Vg=Vref, Vs=V1, wherein VgFor the current potential of first node g, Vs is the current potential of second node s, and Vref is data
Reference the low potential Vref, V1 of signal D is the first current potential V1.
Then, referring to Fig. 4, Fig. 4 is under the driver' s timing for applying for that the pixel-driving circuit that embodiment provides is shown in Fig. 2
Threshold voltage detection-phase access schematic diagram.In conjunction with shown in Fig. 2, Fig. 4, in threshold voltage detection-phase t2, signal is controlled
S1 is still high potential, and the first transistor T1 is still opened, and data-signal D is still with reference to low potential Vref, that is, data are believed at this time
The reference low potential Vref of number D is still exported to first node g.It should be noted that the reference low potential of data-signal D at this time
Vref need to be arranged to the current potential for allowing second transistor T2 and third transistor T3 to open.That is, at this point, second transistor T2 and
Three transistor T3 are still opened, and since the first power supply signal Vdd1 is the second current potential V2, second source signal Vdd2 is the first electricity
Position V1, and the first current potential V1 is less than the second current potential V2, therefore, in initial phase t1, second source signal Vdd2 is to second node s
Charging, until the current potential of second node s is equal to the first current potential V1.And in threshold voltage detection node, the first power supply signal Vdd1
To second node s charging until the current potential of second node s is equal to the reference low potential Vref and second transistor T2 of data-signal D
Threshold voltage between pressure difference.
The current potential of the threshold voltage detection-phase t2, first node g and the current potential of second node s can be according to following public affairs
Formula is configured: Vg=Vref, Vs=Vref-Vth, wherein VgFor the current potential of first node g, VsFor the current potential of second node s,
Reference the low potential Vref, Vth that Vref is data-signal D are the threshold voltage of second transistor T2.
Then, referring to Fig. 5, Fig. 5 is under the driver' s timing for applying for that the pixel-driving circuit that embodiment provides is shown in Fig. 2
The threshold voltage compensation stage access schematic diagram.In conjunction with shown in Fig. 2, Fig. 5, in threshold voltage compensation stage t3, signal is controlled
S1 is still high potential, and the first transistor T1 is still opened, and data-signal D is display high potential Vdata at this time, that is, data are believed
The display high potential Vdata of number D is exported to first node g.Due to capacitor C coupling effect, at this point, the current potential of second node s
Accordingly change.
The current potential of the threshold voltage compensation stage t3, first node gg and the current potential of second node ss can be according to following
Formula is configured: Vg=Vdata, Vs=Vref-Vth+ Δ V, wherein VgFor the current potential of first node g, VsFor second node s
Current potential, Vdata is the display high potential Vdata of data-signal D, and Vth is the threshold voltage of the first transistor T1, and Δ V is aobvious
Show high potential Vdata on influence caused by the current potential of second node s.
Finally, referring to Fig. 6, Fig. 6 is under the driver' s timing for applying for that the pixel-driving circuit that embodiment provides is shown in Fig. 2
Light emitting phase access schematic diagram.In conjunction with shown in Fig. 2, Fig. 6, in light emitting phase t4t4, control signal S1 is low potential, first
Transistor T1 is closed.Due to the memory action of capacitor C, the pressure difference between the current potential of first node g and the current potential of second node s is protected
It holds constant.
In light emitting phase t4t4, the pressure difference between first node g and second node s can obtain according to the following formula: Vgs
=Vdata-Vref+Vth- Δ V, wherein VgS is the pressure difference between the current potential of first node g and the current potential of second node s,
Reference the low potential Vref, Vth that display the high potential Vdata, Vref that Vdata is data-signal D are data-signal D are first brilliant
The threshold voltage of body pipe T1, Δ V are display high potential Vdata on influence caused by the current potential of second node s.
Further, the formula for flowing through the electric current of luminescent device OLEDOLED is calculated are as follows:
IOLED=1/2Cox (μ W/L) (Vgs1-Vth)2, wherein IOLEDFor the electric current for flowing through luminescent device OLED, μ
The carrier mobility of one transistor T1, W and L are respectively the width and length of the channel of the first transistor T1, Vgs1 second
Pressure difference, the threshold voltage that Vth is second transistor T2 between the grid and drain electrode pole of transistor T2.In the embodiment of the present application
In, the current potential of current potential of the pressure difference equal to first node g and second node s between the grid of second transistor T2 and drain electrode pole it
Between pressure difference.By the pressure difference V between the current potential of first node g and the current potential of second node sgs=Vdata-Vref+Vth- Δ V generation
Enter above formula, that is, have:
IOLED=1/2Cox (μ W/L) (Vdata-Vref+Vth- Δ V-Vth)2
=1/2Cox (μ W/L) (Vdata-Vref- Δ V)2
It can be seen that the electric current of luminescent device OLED is unrelated with the threshold voltage of second transistor T2, compensation function is realized
Energy.Luminescent device OLED shines, and the electric current for flowing through luminescent device OLED is unrelated with the threshold voltage of second transistor T2.
Application embodiment itself also provides a kind of display panel comprising above-described pixel-driving circuit specifically may be used
Referring to above to the description of the pixel-driving circuit, this will not be repeated here.
Pixel-driving circuit and display panel provided by the embodiments of the present application, using the pixel-driving circuit pair of 3T1C structure
The threshold voltage of driving transistor in each pixel carries out effective compensation, and the collocation structure of the pixel-driving circuit is more simple
It is single, to not need to occupy a large amount of areas in design.
The above is only the embodiment of the present invention, are not intended to limit the scope of the invention, all to be said using the present invention
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 is included within the scope of the present invention.
Claims (10)
1. a kind of pixel-driving circuit characterized by comprising the first transistor, second transistor, third transistor, capacitor
And luminescent device；
The grid of the first transistor is electrically connected at control signal, and the source electrode of the first transistor is electrically connected at data
The drain electrode of signal, the first transistor is electrically connected at first node；
The grid of the second transistor is electrically connected at the first node, and the source electrode of the second transistor is electrically connected at
The drain electrode of first power supply signal, the second transistor is electrically connected at second node；
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
Second source signal, the drain electrode of the third transistor are electrically connected at the second node；
The first end of the capacitor is electrically connected at the first node, and the second end of the capacitor is electrically connected at described second
Node；
The anode tap of the luminescent device is electrically connected at the second node, and the cathode terminal of the luminescent device is electrically connected at
Ground terminal.
2. pixel-driving circuit according to claim 1, which is characterized in that the control signal, the data-signal, institute
It states the first power supply signal and the second source signal is combined and successively corresponds to initial phase, threshold voltage detection rank
Section, threshold voltage compensation stage and light emitting phase；The data-signal includes with reference to low potential and display high potential；It is described
Second source signal includes the first current potential and the second current potential, and first current potential is less than second current potential；First power supply
The current potential of signal is equal to second current potential.
3. pixel-driving circuit according to claim 2, which is characterized in that in the initial phase, the control letter
Number be high potential, first power supply signal be first current potential, the second source signal be second current potential, it is described
Data-signal is described with reference to low potential.
4. pixel-driving circuit according to claim 2, which is characterized in that described in the threshold voltage detection-phase
Control signal is high potential, and first power supply signal is second current potential by first jump in potential, second electricity
Source signal is second current potential, and the data-signal is described with reference to low potential.
5. pixel-driving circuit according to claim 2, which is characterized in that described in the threshold voltage compensation stage
Control signal is high potential, and first power supply signal is second current potential, and the second source signal is second electricity
Position, the data-signal are the display high potential.
6. pixel-driving circuit according to claim 2, which is characterized in that in the light emitting phase, the control signal
For low potential, first power supply signal is second current potential, and the second source signal is second current potential, the number
It is believed that number for it is described refer to low potential.
7. pixel-driving circuit according to claim 1, which is characterized in that the first transistor, second crystal
Pipe and the third transistor are that low-temperature polysilicon film transistor, oxide semiconductor thin-film transistor or amorphous silicon are thin
Film transistor.
8. pixel-driving circuit according to claim 1, which is characterized in that flow through the electric current of the luminescent device with it is described
The threshold voltage of second transistor is unrelated.
9. pixel-driving circuit according to claim 1, which is characterized in that the luminescent device is organic light-emitting diodes
Pipe.
10. a kind of display panel, which is characterized in that including the described in any item pixel-driving circuits of claim 1-9.
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| CN201910173540.2A CN109887465B (en) | 2019-03-07 | 2019-03-07 | Pixel driving circuit and display panel |
| PCT/CN2019/093657 WO2020177253A1 (en) | 2019-03-07 | 2019-06-28 | Pixel drive circuit and display panel |
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| CN201910173540.2A CN109887465B (en) | 2019-03-07 | 2019-03-07 | Pixel driving circuit and display panel |
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| WO2020177253A1 (en) * | 2019-03-07 | 2020-09-10 | 深圳市华星光电半导体显示技术有限公司 | Pixel drive circuit and display panel |
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| CN101116129A (en) * | 2004-12-15 | 2008-01-30 | 伊格尼斯创新有限公司 | Method and system for programming, calibrating and driving a light emitting device display |
| 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 |
| CN106504699A (en) * | 2016-10-14 | 2017-03-15 | 深圳市华星光电技术有限公司 | AMOLED pixel-driving circuits and driving method |
| CN106548753A (en) * | 2017-01-20 | 2017-03-29 | 深圳市华星光电技术有限公司 | AMOLED pixel drivers system and AMOLED image element driving methods |
| CN107068058A (en) * | 2017-04-28 | 2017-08-18 | 深圳市华星光电技术有限公司 | Pixel-driving circuit, display panel and image element driving method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020177253A1 (en) * | 2019-03-07 | 2020-09-10 | 深圳市华星光电半导体显示技术有限公司 | Pixel drive circuit and display panel |
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| CN109887465B (en) | 2020-05-12 |
| WO2020177253A1 (en) | 2020-09-10 |
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