CN108492785B - A kind of pixel-driving circuit and its driving method, display device - Google Patents

A kind of pixel-driving circuit and its driving method, display device Download PDF

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Publication number
CN108492785B
CN108492785B CN201810276384.8A CN201810276384A CN108492785B CN 108492785 B CN108492785 B CN 108492785B CN 201810276384 A CN201810276384 A CN 201810276384A CN 108492785 B CN108492785 B CN 108492785B
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transistor
grid
voltage
pole
connect
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CN108492785A (en
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吴国强
兰传艳
喻勇
金兑炫
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • G09G3/3275Details of drivers for data electrodes
    • G09G3/3291Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The present invention provides a kind of pixel-driving circuit and its driving methods, display device, are related to field of display technology.Data voltage is written to memory module by Data write. module in the present invention, offset voltage is written to memory module in data voltage compensating module, by the data voltage range for reducing data line input, and a linear offset voltage is provided by data voltage compensating module, to provide voltage required when driving light emission drive transistor device shines, so that display panel reaches required optical requirement, simultaneously, when data voltage switching, since the range of data voltage reduces, the electromagnetic interference inside display panel can be reduced, and the coupled noise between the pixel corresponding first supply voltage Vdd and initial voltage Vint of adjacent column, mitigate the crosstalk phenomenon of display panel.

Description

A kind of pixel-driving circuit and its driving method, display device
Technical field
The present invention relates to field of display technology, fill more particularly to a kind of pixel-driving circuit and its driving method, display It sets.
Background technique
OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) display device is as next-generation aobvious Showing device causes very big concern because of its quick response speed, high-luminous-efficiency, high brightness and wide viewing angle, and OLED is aobvious Showing device is the electric current by driving transistor controls to flow in Organic Light Emitting Diode to show image.
As depicted in figs. 1 and 2, Fig. 1 is a kind of existing pixel-driving circuit, and Fig. 2 is a kind of existing pixel driver electricity The working timing figure on road, in the pixel-driving circuit, when the gray value of pixel is 0, required data voltage is about 4V, When the gray value of pixel is 255, required data voltage is about 2V, so the range of data voltage is 2~4V.
When the pixel needs in picture are switched to gray value 255 from gray value 0, data voltage then needs to switch to from 4V 0V, when data voltage switching, will lead to corresponding first electricity of pixel of adjacent column since the AC voltage difference of data voltage is big Source voltage Vdd and initial voltage Vint generate biggish coupled noise.
Summary of the invention
The present invention provides a kind of pixel-driving circuit and its driving method, display device, to solve existing pixel driver Circuit, when data voltage switching, leads to corresponding first power supply of the pixel of adjacent column since the AC voltage difference of data voltage is big Voltage Vdd and initial voltage Vint lead to the problem of biggish coupled noise.
To solve the above-mentioned problems, the invention discloses a kind of pixel-driving circuits, comprising: data voltage compensating module, Data write. module, light emitting control module, the first reseting module, memory module, driving transistor and luminescent device;
The data voltage compensating module connects with compensation voltage signal end, grid control terminal and the memory module respectively It connects, is configured as that offset voltage is written to the memory module;
The Data write. module is connect with grid line, data line, the driving transistor and the memory module respectively, quilt It is configured to that data voltage is written to the memory module;
The light emitting control module respectively with the first power voltage terminal, luminous signal end, the memory module, the driving Transistor is connected with the luminescent device, is configured as the first supply voltage for inputting first power voltage terminal and institute is written Memory module is stated, and the luminescent device is driven to shine;
First reseting module respectively with reset signal end, initial voltage signal end and it is described driving transistor grid Connection is configured as resetting the grid of the driving transistor;
The grid of the driving transistor is connect with the memory module, the first pole of the driving transistor and the number It is connected according to writing module, the second pole of the driving transistor is connect with the light emitting control module;
The anode of the luminescent device is connect with the light emitting control module, the cathode and second source of the luminescent device Voltage end connection.
Preferably, the data voltage compensating module includes the first transistor;
The grid of the first transistor is connect with the grid control terminal, the first pole of the first transistor with it is described The connection of compensation voltage signal end, the second pole of the first transistor is connect with the memory module.
Preferably, the Data write. module includes second transistor and third transistor;
The grid of the second transistor is connect with the grid line, the first pole of the second transistor and the data line Connection, the second pole of the second transistor are connect with the first pole of the driving transistor;
The grid of the third transistor is connect with the grid line, and the first pole of the third transistor and the driving are brilliant Second pole of body pipe connects, and the second pole of the third transistor is connect with memory module.
Preferably, the light emitting control module includes the 4th transistor, the 5th transistor and the 6th transistor;
The grid of 4th transistor is connect with the luminous signal end, the first pole of the 4th transistor with it is described The connection of first power voltage terminal, the second pole of the 4th transistor is connect with the first pole of the 5th transistor;
The grid of 5th transistor is connect with the luminous signal end, the second pole of the 5th transistor with it is described Memory module connection;
The grid of 6th transistor is connect with the luminous signal end, the first pole of the 6th transistor with it is described The second pole connection of transistor is driven, the second pole of the 6th transistor is connect with the luminescent device.
Preferably, first reseting module includes the 7th transistor;
The grid of 7th transistor is connect with the reset signal end, the first pole of the 7th transistor with it is described The connection of initial voltage signal end, the second pole of the 7th transistor are connect with the grid of the driving transistor.
Preferably, the memory module includes storage capacitance, the first end of the storage capacitance and the driving transistor Grid connection, the second end of the storage capacitance connect with the data voltage compensating module.
Preferably, the pixel-driving circuit further includes the second reseting module, and second reseting module includes the 8th brilliant Body pipe;
The grid of 8th transistor is connect with the grid line, the first pole of the 8th transistor and the initial electricity Signal end connection is pressed, the second pole of the 8th transistor is connect with the anode of the luminescent device.
Preferably, the compensation voltage signal end and the data line are connected to driving chip;
The driving chip is configured as to compensation voltage signal end input offset voltage, and to the data Line input data voltage.
To solve the above-mentioned problems, the invention also discloses a kind of driving methods of pixel-driving circuit, are applied to driving Above-mentioned pixel-driving circuit, the driving method include:
The grid of driving transistor is resetted;
Data voltage is written to memory module;
Offset voltage is written to the memory module;
Memory module is written into first supply voltage of the first power voltage terminal input, and luminescent device is driven to shine.
To solve the above-mentioned problems, in addition the present invention discloses a kind of display device, including above-mentioned pixel-driving circuit.
Compared with prior art, the present invention includes the following advantages:
Data voltage is written to memory module by Data write. module, data voltage compensating module is written to memory module Offset voltage provides one linearly by reducing the data voltage range of data line input, and by data voltage compensating module Offset voltage, to provide required voltage when driving light emission drive transistor device shines, so that needed for display panel reaches Optical requirement, meanwhile, when data voltage switching when, due to data voltage range reduce, can reduce inside display panel Coupled noise between the corresponding first supply voltage Vdd and initial voltage Vint of the pixel of electromagnetic interference and adjacent column, subtracts The crosstalk phenomenon of light display panel.
Detailed description of the invention
Fig. 1 shows a kind of schematic diagram of existing pixel-driving circuit;
Fig. 2 shows a kind of existing working timing figures of pixel-driving circuit;
Fig. 3 shows a kind of schematic diagram of pixel-driving circuit of the embodiment of the present invention;
Fig. 4 shows a kind of working timing figure of pixel-driving circuit of the embodiment of the present invention;
Fig. 5 shows a kind of circuit diagram of pixel-driving circuit of the embodiment of the present invention;
Fig. 6 shows the circuit diagram of another pixel-driving circuit of the embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
Embodiment one
Referring to Fig. 3, a kind of schematic diagram of pixel-driving circuit of the embodiment of the present invention is shown.
The pixel-driving circuit include: data voltage compensating module 11, Data write. module 12, light emitting control module 13, First reseting module 14, memory module 15, driving transistor T9 and luminescent device D.
Data voltage compensating module 11 respectively with compensation voltage signal end VB, grid control terminal Gate1 and memory module 15 Connection is configured as that offset voltage Vb is written to memory module 15.
Data write. module 12 is connect with grid line Gate, data line Date, driving transistor T9 and memory module 15 respectively, It is configured as that data voltage Vdata is written to memory module 15.
Light emitting control module 13 is brilliant with the first power voltage terminal VDD, luminous signal end EM, memory module 15, driving respectively Body pipe T9 is connected with luminescent device D, is configured as depositing the first supply voltage Vdd write-in that the first power voltage terminal VDD is inputted Module 15 is stored up, and luminescent device D is driven to shine.
First reseting module 14 respectively with reset signal end Reset, initial voltage signal end VINT and driving transistor T9 Grid connection, be configured as to driving transistor T9 grid reset.
The grid of driving transistor T9 is connect with memory module 15, drives the first pole and the Data write. module of transistor T9 Second pole of 12 connections, driving transistor T9 is connect with light emitting control module 13.
The anode of luminescent device D is connect with light emitting control module 13, the cathode and second source voltage end of luminescent device D VSS connection.
Referring to Fig. 4, a kind of working timing figure of pixel-driving circuit of the embodiment of the present invention is shown.
The reset signal of first stage T1, reset signal end Reset input is effective, so that the first reseting module 14 is opened, Under the control of reset signal, the grid of the first 14 pairs of reseting module driving transistor T9 resets, and will drive transistor T9 Grid be reset to initial voltage Vint.
The grid signal of second stage T2, grid line Gate input is effective, so that Data write. module 12 is opened, believes in grid Number control under, Data write. module 12 to memory module 15 be written data voltage Vdata.
The grid control signal of phase III T3, grid control terminal Gate1 input is effective, so that data voltage compensating module 11 open, and under the control of grid control signal, offset voltage Vb is written to memory module 15 in data voltage compensating module 11.
The luminous signal of fourth stage T4, luminous signal end EM input is effective, so that light emitting control module 13 is opened, is sending out Under the control of optical signal, the first supply voltage Vdd write-in that light emitting control module 13 inputs the first power voltage terminal VDD is stored Module 15, and luminescent device D is driven to shine.
In embodiments of the present invention, while reducing the range of data voltage Vdata of data line Date input, in order to So that display panel reaches required optical requirement, need to provide a linear compensation electricity by data voltage compensating module 11 Pressure;When pressure difference when data voltage switching is bigger, then the coupled noise that adjacent column pixel generates is more obvious, and the present invention is by subtracting The range of small data voltage Vdata can reduce the electromagnetic interference inside display panel in switch data voltage Vdata, and Coupled noise between the pixel of adjacent column corresponding first supply voltage Vdd and initial voltage Vint, mitigates display panel Crosstalk phenomenon.
Referring to Fig. 5, a kind of circuit diagram of pixel-driving circuit of the embodiment of the present invention is shown.
In the pixel-driving circuit, data voltage compensating module 11 includes the first transistor T1;The grid of the first transistor T1 Pole is connect with grid control terminal Gate1, and the first pole of the first transistor T1 is connect with compensation voltage signal end VB, the first transistor The second pole of T1 is connect with memory module 15.
Data write. module 12 includes second transistor T2 and third transistor T3;The grid and grid line of second transistor T2 First pole of Gate connection, second transistor T2 is connect with data line Data, the second pole of second transistor T2 and driving crystal The first pole of pipe T9 connects;The grid of third transistor T3 is connect with grid line Gate, the first pole of third transistor T3 and driving The second pole of transistor T9 connects, and the second pole of third transistor T3 is connect with memory module 15.
Light emitting control module 13 includes the 4th transistor T4, the 5th transistor T5 and the 6th transistor T6;4th transistor The grid of T4 is connect with luminous signal end EM, and the first pole of the 4th transistor T4 is connect with the first power voltage terminal VDD, and the 4th is brilliant The second pole of body pipe T4 is connect with the first pole of the 5th transistor T5;The grid and luminous signal end EM of 5th transistor T5 connects It connects, the second pole of the 5th transistor T5 is connect with memory module 15;The grid of 6th transistor T6 is connect with luminous signal end EM, The first pole of 6th transistor T6 is connect with the second pole of driving transistor T9, the second pole of the 6th transistor T6 and luminescent device D connection.
First reseting module 14 includes the 7th transistor T7;The grid and reset signal end Reset of 7th transistor T7 connects It connects, the first pole of the 7th transistor T7 is connect with initial voltage signal end VINT, and the second pole of the 7th transistor T7 and driving are brilliant The grid of body pipe T9 connects.
Memory module 15 includes storage capacitance Cst, and the grid of the first end a and driving transistor T9 of storage capacitance Cst connect It connects, the second end b of storage capacitance Cst is connect with data voltage compensating module 11.
Specifically, the grid of the first transistor T1 is connect with grid control terminal Gate1, the first pole of the first transistor T1 with The VB connection of compensation voltage signal end, the second pole of the first transistor T1 are connect with the second end b of storage capacitance Cst;Third crystal The grid of pipe T3 is connect with grid line Gate, and the first pole of third transistor T3 is connect with the second pole of driving transistor T9, third The second pole of transistor T3 is connect with the first end a of storage capacitance Cst;The grid and luminous signal end EM of 5th transistor T5 connects It connects, the second pole of the 5th transistor T5 is connect with the second end b of storage capacitance Cst.
Below with reference to working timing figure shown in Fig. 4, the course of work of pixel-driving circuit shown in fig. 5 is carried out brief Explanation.
The reset signal of first stage T1, reset signal end Reset input is low level, the grid letter of grid line Gate input Number be high level, grid control terminal Gate1 input grid control signal be high level, luminous signal end EM input luminous letter Number be high level, the 7th transistor T7 opens under the control of reset signal, according to initial voltage signal end VINT input just Beginning voltage Vint will drive the grid of transistor T9 to be reset to initial voltage Vint;At this point, driving transistor T9 is opened, still Since the 6th transistor T6 is in close state, luminescent device D will not shine.
The grid signal of second stage T2, grid line Gate input is low level, the reset letter of reset signal end Reset input Number be high level, grid control terminal Gate1 input grid control signal be high level, luminous signal end EM input luminous letter It number is high level, second transistor T2 and third transistor T3 open under the control of grid signal, due to driving transistor T9 It opens, then the first end a of the data voltage Vdata write-in storage capacitance Cst inputted data line Data.
The grid control signal of phase III T3, grid control terminal Gate1 input is low level, reset signal end Reset The reset signal of input is high level, and the grid signal of grid line Gate input is high level, and EM input in luminous signal end shines Signal is high level, and the first transistor T1 is opened under the control of grid control signal, by compensation voltage signal end VB input The second end b of storage capacitance Cst is written in offset voltage Vb, at this point, the voltage Va=Vdata+ of the first end of storage capacitance Cst Vb。
Fourth stage, the luminous signal of luminous signal end EM input are low level, the reset of reset signal end Reset input Signal is high level, and the grid signal of grid line Gate input is high level, the grid control signal of grid control terminal Gate1 input For high level, the 4th transistor T4, the 5th transistor T5 and the 6th transistor T6 are opened under the control of luminous signal, and the 4th is brilliant The first supply voltage Vdd write-in storage capacitance Cst's that body pipe T4 and the 5th transistor T5 inputs the first power voltage terminal VDD Second end b, at this point, the voltage Va=Vdata+Vb+Vdd of the first end a of storage capacitance Cst, drives the grid electricity of transistor T9 The voltage Va for pressing first end a of the Vg equal to storage capacitance Cst, when driving transistor T9 to open, since the 6th transistor T6 is beaten It opens, then controls luminescent device D and shine, the light emission luminance of luminescent device is related to the driving grid voltage Vg of transistor T9.
For example, the first supply voltage Vdd of the first power voltage terminal VDD input is 4.6V, when pixel needs ash to be shown When angle value Gray is 0, according to existing pixel-driving circuit, due to there is no an offer offset voltage, the first of storage capacitance Cst The voltage Va=Vdata+Vdd for holding a, then the data voltage Vdata for needing data line Data to input is 4V, according to of the invention Pixel-driving circuit can reduce data voltage due to the voltage Va=Vdata+Vb+Vdd of the first end a of storage capacitance Cst The input of Vdata, and the part that data voltage Vdata reduces is provided by offset voltage Vb, when compensation voltage signal end, VB is defeated When the offset voltage Vb entered is 2V, then the data voltage Vdata of data line Data input is 2V;When pixel needs gray scale to be shown When value Gray is 255, the data voltage Vdata that existing pixel-driving circuit needs is 2V, is driven according to pixel of the invention Dynamic circuit, then input data voltage Vdata is 1V, and offset voltage Vb is 1V;Therefore, pass through compensation voltage signal end VB input Offset voltage Vb drives so that the range of the data voltage Vdata of data line Data input is 1~2V relative to existing pixel The data voltage Vdata range of dynamic circuit, data line Data input reduces.
In embodiments of the present invention, when data voltage Vdata switches, since the AC voltage difference of data voltage Vdata is small, The corresponding first supply voltage Vdd of pixel and initial voltage of the electromagnetic interference and adjacent column inside display panel can be reduced Coupled noise between Vint mitigates the crosstalk phenomenon of display panel.
It should be noted that the first transistor T1 to the 7th transistor T7 used in the embodiment of the present invention, and driving Transistor T9 is P-type transistor, is connected when grid is low level, is ended when grid is high level, in order to distinguish crystal Source electrode therein is known as the first pole by the two poles of the earth of pipe in addition to grid, and drain electrode is known as the second pole.Wherein, the first supply voltage Holding the first supply voltage Vdd of VDD input is high level, and the second source voltage Vss of second source voltage end VSS input is low The initial voltage Vint of level, initial voltage signal end VINT input is also low level.
Certainly, the first transistor T1 to the 7th transistor T7 used in the embodiment of the present invention, and driving transistor T9 It may be N-type transistor, be connected when grid is high level, ended when grid is low level, but reset signal end Reset signal, the grid signal of grid line Gate input of Reset input, the grid control signal of grid control terminal Gate1 input, And the level height of the luminous signal of luminous signal end EM input, it is intended to different with level height when P-type transistor.
In embodiments of the present invention, data voltage, data voltage compensation are written to memory module by Data write. module Offset voltage is written to memory module in module, mends by reducing the data voltage range of data line input, and by data voltage It repays module and one linear offset voltage is provided, to provide voltage required when driving light emission drive transistor device shines, make It obtains display panel and reaches required optical requirement, meanwhile, it, can since the range of data voltage reduces when data voltage switching Reduce the corresponding first supply voltage Vdd of pixel and initial voltage of the electromagnetic interference and adjacent column inside display panel Coupled noise between Vint mitigates the crosstalk phenomenon of display panel.
Embodiment two
Referring to Fig. 6, the circuit diagram of another pixel-driving circuit of the embodiment of the present invention is shown.
On the basis of Fig. 5, which further includes the second reseting module 16, and the second reseting module 16 includes the Eight transistor T8;The grid of 8th transistor T8 is connect with grid line Gate, and the first pole of the 8th transistor T8 and initial voltage are believed Number end VINT connection, the second pole of the 8th transistor T8 is connect with the anode of luminescent device D.
The grid signal of second stage T2, grid line Gate input is low level, control of the 8th transistor T8 in grid signal System is lower to be opened, and the anode of the initial voltage Vint write-in luminescent device D of initial voltage signal end VINT input is shone with improving The contrast of device D.
8th transistor T8 used in the embodiment of the present invention is P-type transistor, it is of course also possible to use N-type transistor.
Wherein, luminescent device D can be Organic Light Emitting Diode.
In embodiments of the present invention, compensation voltage signal end VB and data line Data is connected to driving chip, drives core Piece is configured as to compensation voltage signal end VB input offset voltage Vb, and to data line Date input data voltage Vdata。
By the way that the thermal compensation signal line of compensation voltage signal end VB will be accessed, it is connected to driving chip with data line Data, Data voltage Vdata and offset voltage Vb is provided by the same driving chip, simplifies the structure of display panel, the driving chip Alternatively referred to as Driver IC.
In embodiments of the present invention, data voltage, data voltage compensation are written to memory module by Data write. module Offset voltage is written to memory module in module, mends by reducing the data voltage range of data line input, and by data voltage It repays module and one linear offset voltage is provided, to provide voltage required when driving light emission drive transistor device shines, make It obtains display panel and reaches required optical requirement, meanwhile, it, can since the range of data voltage reduces when data voltage switching Reduce the corresponding first supply voltage Vdd of pixel and initial voltage of the electromagnetic interference and adjacent column inside display panel Coupled noise between Vint mitigates the crosstalk phenomenon of display panel.
Embodiment three
The embodiment of the invention also provides a kind of display devices, which is characterized in that including above-mentioned pixel-driving circuit.
The description of embodiment one and embodiment two is referred to about the specific descriptions of pixel-driving circuit, the present invention is implemented Example repeats no more this.
In practical applications, which can be with are as follows: mobile phone, tablet computer, television set, display, laptop, Any products or components having a display function such as navigator.
In embodiments of the present invention, which includes pixel-driving circuit, by Data write. module to storage mould Data voltage is written in block, and offset voltage is written to memory module in data voltage compensating module, by the number for reducing data line input A linear offset voltage is provided according to voltage range, and by data voltage compensating module, to provide driving transistor driving Luminescent device voltage required when shining, so that display panel reaches required optical requirement, meanwhile, when data voltage switches When, since the range of data voltage reduces, the pixel that can reduce the electromagnetic interference and adjacent column inside display panel is corresponding Coupled noise between first supply voltage Vdd and initial voltage Vint, mitigates the crosstalk phenomenon of display panel.
For the aforementioned method embodiment, for simple description, therefore, it is stated as a series of action combinations, still Those skilled in the art should understand that the present invention is not limited by the sequence of acts described, because according to the present invention, it is certain Step can be performed in other orders or simultaneously.Secondly, those skilled in the art should also know that, it is described in the specification Embodiment belong to preferred embodiment, it is related that actions and modules are not necessarily necessary for the present invention.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning Covering non-exclusive inclusion, so that the process, method, commodity or the equipment that include a series of elements not only include that A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, commodity or The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged Except there is also other identical elements in process, method, commodity or the equipment for including the element.
Above to a kind of pixel-driving circuit provided by the present invention and its driving method, display device, carry out in detail It introduces, used herein a specific example illustrates the principle and implementation of the invention, the explanation of above embodiments It is merely used to help understand method and its core concept of the invention;At the same time, for those skilled in the art, according to this The thought of invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification is not answered It is interpreted as limitation of the present invention.

Claims (9)

1. a kind of pixel-driving circuit characterized by comprising data voltage compensating module, Data write. module, light emitting control Module, the first reseting module, memory module, driving transistor and luminescent device;
The data voltage compensating module is connect with compensation voltage signal end, grid control terminal and the memory module respectively, quilt It is configured to that offset voltage is written to the memory module;
The Data write. module is connect with grid line, data line, the driving transistor and the memory module respectively, is configured For data voltage is written to the memory module;
The light emitting control module respectively with the first power voltage terminal, luminous signal end, the memory module, the driving crystal Pipe is connected with the luminescent device, is configured as depositing described in the first supply voltage write-in by first power voltage terminal input Module is stored up, and the luminescent device is driven to shine;
Grid of first reseting module respectively with reset signal end, initial voltage signal end and the driving transistor connects It connects, is configured as resetting the grid of the driving transistor;
The grid of the driving transistor is connect with the memory module, and the first pole of the driving transistor is write with the data Enter module connection, the second pole of the driving transistor is connect with the light emitting control module;
The anode of the luminescent device is connect with the light emitting control module, the cathode and second source voltage of the luminescent device End connection;
Wherein, the data voltage compensating module includes the first transistor;
The grid of the first transistor is connect with the grid control terminal, the first pole of the first transistor and the compensation Voltage signal end connection, the second pole of the first transistor is connect with the memory module.
2. pixel-driving circuit according to claim 1, which is characterized in that the Data write. module includes the second crystal Pipe and third transistor;
The grid of the second transistor is connect with the grid line, and the first pole of the second transistor and the data line connect It connects, the second pole of the second transistor is connect with the first pole of the driving transistor;
The grid of the third transistor is connect with the grid line, the first pole of the third transistor and the driving transistor The second pole connection, the second pole of the third transistor is connect with memory module.
3. pixel-driving circuit according to claim 1, which is characterized in that the light emitting control module includes the 4th crystal Pipe, the 5th transistor and the 6th transistor;
The grid of 4th transistor is connect with the luminous signal end, the first pole and described first of the 4th transistor Power voltage terminal connection, the second pole of the 4th transistor is connect with the first pole of the 5th transistor;
The grid of 5th transistor is connect with the luminous signal end, the second pole of the 5th transistor and the storage Module connection;
The grid of 6th transistor is connect with the luminous signal end, the first pole of the 6th transistor and the driving Second pole of transistor connects, and the second pole of the 6th transistor is connect with the luminescent device.
4. pixel-driving circuit according to claim 1, which is characterized in that first reseting module includes the 7th crystal Pipe;
The grid of 7th transistor is connect with the reset signal end, the first pole of the 7th transistor and described initial Voltage signal end connection, the second pole of the 7th transistor are connect with the grid of the driving transistor.
5. pixel-driving circuit according to claim 1, which is characterized in that the memory module includes storage capacitance, institute The first end for stating storage capacitance is connect with the grid of the driving transistor, the second end of the storage capacitance and data electricity Press compensating module connection.
6. pixel-driving circuit according to claim 1, which is characterized in that the pixel-driving circuit further includes second multiple Position module, second reseting module include the 8th transistor;
The grid of 8th transistor is connect with the grid line, and the first pole of the 8th transistor and the initial voltage are believed Number end connection, the second pole of the 8th transistor is connect with the anode of the luminescent device.
7. pixel-driving circuit according to claim 1, which is characterized in that the compensation voltage signal end and the data Line is connected to driving chip;
The driving chip is configured as to compensation voltage signal end input offset voltage, and defeated to the data line Enter data voltage.
8. a kind of driving method of pixel-driving circuit, which is characterized in that applied to driving such as any one of claim 1-7 Pixel-driving circuit, the driving method include:
The grid of driving transistor is resetted;
Data voltage is written to memory module;
Offset voltage is written to the memory module;
Memory module is written into first supply voltage of the first power voltage terminal input, and luminescent device is driven to shine.
9. a kind of display device, which is characterized in that including pixel-driving circuit such as of any of claims 1-7.
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