CN108269533A - Pixel circuit, pixel and display device - Google Patents
Pixel circuit, pixel and display device Download PDFInfo
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- CN108269533A CN108269533A CN201710002030.XA CN201710002030A CN108269533A CN 108269533 A CN108269533 A CN 108269533A CN 201710002030 A CN201710002030 A CN 201710002030A CN 108269533 A CN108269533 A CN 108269533A
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- film transistor
- tft
- thin film
- pixel circuit
- voltage compensation
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
This application discloses pixel circuit, pixel and display devices.The pixel circuit includes：Voltage compensation module, thin film transistor (TFT) and capacitor, wherein, voltage compensation module includes the first film transistor and multiple voltage compensation thin film transistor (TFT)s for being used to provide offset voltage as the pixel circuit driving transistor, voltage in the pixel circuit can be compensated by voltage compensation mould these voltage compensation thin film transistor (TFT)s in the block, so that in pixel circuit, under the potential of second source and the potential same case of data line, even if the threshold voltage in each thin film transistor (TFT) is different, also the difference for the size of current for flowing to Organic Light Emitting Diode can be reduced, so that different organic light-emitting diode brightness is more uniform, and light emission luminance is more uniform between causing the different pixels of AMOLED.
Description
Technical field
This application involves luminescence display technical field more particularly to pixel circuit, pixel and display devices.
Background technology
As the flat-panel display devices such as the continuous development of science and technology, mobile phone, PAD have more and more appeared in people's
Life.In these flat-panel display devices, organic light emitting display due to fast response time, visual angle is wide the features such as cause people
Extensive concern.
Organic light emitting display can be divided into passive matrix organic light emitting display according to the difference of type of drive
(Passive matrix organic light emitting diode, PMOLED) and active matrix/organic light emitting display
Part (Active matrix organic light emitting diode, AMOLED).Wherein, since AMOLED overcomes
Therefore the features such as PMOLED high power consumptions, has high-resolution, large scale and the field of low-power consumption needing organic light emitting display
Under scape, AMOLED has obtained more application.
Usually there are multiple pixels, each pixel includes Organic Light Emitting Diode (organic light on AMOLED
Emitting diode, OLED) and pixel circuit, the pixel circuit corresponding OLED can be driven to be shown.Pixel circuit
On can have multiple thin film transistor (TFT)s (Thin Film Transistor, TFT), led to by the size of current in thin film transistor (TFT)
Often related with thin-film transistor gate voltage, which is usually provided by power data signal, can be by regulating and controlling grid
The size of pole tension controls the electric current flowed through in thin film transistor (TFT), so as to fulfill the control to pixel light emission.For example, for p
The TFT of type can control the size of grid voltage by data-signal, so as to control the electric current for flowing through the TFT, when control should
The grid voltage of TFT is less than threshold voltage, and the electric current for flowing through the TFT is 0.
However, in practical applications, the characteristics of due to TFT itself, the threshold voltage of each TFT is caused to be typically different, this
For sample in pixel circuit in the case where data-signal is identical, different threshold voltages can cause the electric current for flowing through OLED different,
So that different OLED light emission luminance is different, so as to cause light emission luminance between the different pixels of AMOLED uneven.
Invention content
The embodiment of the present application provides pixel circuit, pixel and display device, for solving the problems of the prior art.
The embodiment of the present application provides a kind of pixel circuit, including：Voltage compensation module, the second thin film transistor (TFT), third
Thin film transistor (TFT), the 4th thin film transistor (TFT), the 5th thin film transistor (TFT), the 6th thin film transistor (TFT) and capacitor, wherein：
Voltage compensation module is connected between the 5th thin film transistor (TFT) and the 6th thin film transistor (TFT), the voltage compensation module
Include the first film transistor as the pixel circuit driving transistor and multiple electricity for being used to provide offset voltage
Press compensation film transistor；
Second thin film transistor (TFT) is connected between data line and voltage compensation module, the grid of second thin film transistor (TFT)
It is connected to the second scan line；
Third thin film transistor (TFT) is connected between the 4th thin film transistor (TFT) and voltage compensation module, the third film crystal
The grid of pipe is connected to the second scan line；
4th thin film transistor (TFT) is connected between the first power supply and capacitor, the grid connection of the 4th thin film transistor (TFT)
In the first scan line；
5th thin film transistor (TFT) is connected between second source and voltage compensation module, the grid of the 5th thin film transistor (TFT)
Pole is connected to control line；
6th thin film transistor (TFT) is connected to Organic Light Emitting Diode and the voltage compensation module that the pixel circuit is driven
Between, the grid of the 6th thin film transistor (TFT) is connected to control line；
Capacitor is connected between second source and the 4th thin film transistor (TFT).
Preferably, the grid of the voltage compensation mould first film transistor in the block is connected to first node；
The voltage compensation mould voltage compensation thin film transistor (TFT) in the block includes the 7th thin film transistor (TFT) and the 8th film is brilliant
Body pipe, wherein, the 7th thin film transistor (TFT) is connected between third thin film transistor (TFT) and first film transistor, the 7th film
The grid of transistor is connected to first node, and the 8th thin film transistor (TFT) is connected to the 5th thin film transistor (TFT) and first film transistor
Between, the grid of the 8th thin film transistor (TFT) is connected to first node；
Correspondingly, the second thin film transistor (TFT) is connected between data line and first film transistor；
Third thin film transistor (TFT) is connected between the 4th thin film transistor (TFT) and the 7th thin film transistor (TFT)；
5th thin film transistor (TFT) is connected between second source and the 8th thin film transistor (TFT)；
6th thin film transistor (TFT) is connected to Organic Light Emitting Diode and the first film crystal that the pixel circuit is driven
Between pipe.
Preferably, the 7th thin film transistor (TFT) and the 8th thin film transistor (TFT) film crystal identical for performance parameter
Pipe.
Preferably, the potential that first power supply is provided is less than the potential that the second source is provided；And
The first film transistor, the 8th thin film transistor (TFT) and the 6th thin film transistor (TFT) are that p-type is thin
Film transistor；Then,
First film transistor is connected between the 8th thin film transistor (TFT) and the 6th thin film transistor (TFT), specially：
The source electrode of first film transistor is connected to the drain electrode of the 8th thin film transistor (TFT), and the leakage of first film transistor
Pole is connected to the source electrode of the 6th thin film transistor (TFT).
Preferably, the potential that first power supply is provided is less than the potential that the second source is provided；And
The first film transistor, the 8th thin film transistor (TFT) and the 6th thin film transistor (TFT) are that N-shaped is thin
Film transistor；Then,
First film transistor is connected between the 8th thin film transistor (TFT) and the 6th thin film transistor (TFT), specially：
The drain electrode of first film transistor is connected to the source electrode of the 8th thin film transistor (TFT), and the source of first film transistor
Pole is connected to the drain electrode of the 6th thin film transistor (TFT).
Preferably, the grid of the voltage compensation mould first film transistor in the block is connected to second node；
The voltage compensation mould voltage compensation thin film transistor (TFT) in the block includes the tenth thin film transistor (TFT) and the 11st film
Transistor, wherein, the tenth thin film transistor (TFT) is connected between the second thin film transistor (TFT) and first film transistor, and the described tenth is thin
The grid of film transistor is connected to second node, and the 11st thin film transistor (TFT) is connected to first film transistor and the 6th film is brilliant
Between body pipe, the grid of the 11st thin film transistor (TFT) is connected to second node；
Correspondingly, the second thin film transistor (TFT) is connected between data line and the tenth thin film transistor (TFT)；
Third thin film transistor (TFT) is connected between the 4th thin film transistor (TFT) and the 11st thin film transistor (TFT)；
5th thin film transistor (TFT) is connected between second source and first film transistor；
6th thin film transistor (TFT) is connected to Organic Light Emitting Diode and the 11st film crystalline substance that the pixel circuit is driven
Between body pipe.
Preferably, the pixel circuit further includes：It is connected to organic hair that the first power supply and the pixel circuit are driven
The 9th thin film transistor (TFT) between optical diode, the grid of the 9th thin film transistor (TFT) are connected to third scan line.
Preferably, the pixel circuit further includes：
The second capacitor being connected between the second scan line and the 4th thin film transistor (TFT).
The embodiment of the present application additionally provides a kind of pixel, and the pixel includes the pixel electricity that the embodiment of the present application is provided
The Organic Light Emitting Diode that road and the pixel circuit are driven.
The embodiment of the present application additionally provides a kind of display device, and the display device includes multiple the embodiment of the present application institutes
The pixel of offer.
Above-mentioned at least one technical solution that the embodiment of the present application uses can reach following advantageous effect：
The pixel circuit provided using the embodiment of the present application, since in the pixel circuit, voltage compensation can be passed through
Mould multiple voltage compensation thin film transistor (TFT)s in the block compensate the voltage in the pixel circuit so that in pixel circuit,
Under the potential of second source and the potential same case of data line, even if the threshold voltage in each thin film transistor (TFT) is different,
Also the difference for the size of current for flowing to Organic Light Emitting Diode can be reduced so that different organic light-emitting diode brightness
More uniformly, and so that light emission luminance is more uniform between the different pixels of AMOLED.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen
Illustrative embodiments and their description please do not form the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the concrete structure schematic diagram of a kind of pixel circuit that the embodiment of the present application 1 provides；
Fig. 2 is the concrete structure schematic diagram of another pixel circuit that the embodiment of the present application 1 provides；
Fig. 3 is the concrete structure schematic diagram of another pixel circuit that the embodiment of the present application 1 provides；
Fig. 4 is the concrete structure schematic diagram of another pixel circuit that the embodiment of the present application 1 provides；
Fig. 5 is the drive signal sequence diagram of pixel circuit that the embodiment of the present application 1 provides；
Fig. 6 is the concrete structure schematic diagram of a kind of pixel circuit that the embodiment of the present application 2 provides；
Fig. 7 is the concrete structure schematic diagram of another pixel circuit that the embodiment of the present application 2 provides；
Fig. 8 is the concrete structure schematic diagram of another pixel circuit that the embodiment of the present application 2 provides；
Fig. 9 is the concrete structure schematic diagram of another pixel circuit that the embodiment of the present application 2 provides；
Figure 10 is the drive signal sequence diagram of pixel circuit that the embodiment of the present application 2 provides.
Specific embodiment
Purpose, technical scheme and advantage to make the application are clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under the premise of creative work, shall fall in the protection scope of this application.
Below in conjunction with attached drawing, the technical solution that each embodiment of the application provides is described in detail.
Embodiment 1
As described above, usually having multiple pixels on AMOLED, each pixel includes Organic Light Emitting Diode OLED and drive
Move the pixel circuit of the OLED.Can there are multiple thin film transistor (TFT) Thin Film Transistor, TFT on pixel circuit, lead to
The size of current crossed in thin film transistor (TFT) is usually related with thin-film transistor gate voltage, and the grid voltage is usually by data-signal
Power supply provides, and can control the electric current flowed through in thin film transistor (TFT) by regulating and controlling the size of grid voltage, so as to fulfill right
The control of pixel light emission.For example, for the TFT of p-type, the size of grid voltage can be controlled by data-signal power supply, from
And the electric current for flowing through the TFT is controlled, when the grid voltage of the TFT is controlled to be less than threshold voltage, the electric current for flowing through the TFT is 0.
However, in practical applications, the characteristics of due to TFT itself, threshold voltage between different TFT usually not phase
Together so that even if providing identical grid voltage to different TFT by data-signal power supply, flow through these differences TFT's
Electric current simultaneously differs, so as to cause light emission luminance between the different pixels of AMOLED uneven.
Based on this, the embodiment of the present application 1 provides a kind of pixel circuit, can be used in solving the problems of the prior art.
As shown in Figure 1, the pixel circuit 10 includes：Voltage compensation module 101, the second film crystal T102 pipes, third thin film transistor (TFT)
T103, the 4th thin film transistor (TFT) T104, the 5th thin film transistor (TFT) T105, the 6th thin film transistor (TFT) T106 and capacitor C101,
Wherein：
Voltage compensation module 101 is connected between the 5th thin film transistor (TFT) T105 and the 6th thin film transistor (TFT) T106, described
Voltage compensation module 101 includes the first film transistor T101 and multiple use as the pixel circuit driving transistor
In the voltage compensation thin film transistor (TFT) for providing offset voltage；
Second thin film transistor (TFT) T102 is connected between data line D1 and voltage compensation module 101, and second film is brilliant
The grid of body pipe T102 is connected to the second scan line S102；
Third thin film transistor (TFT) T103 is connected between the 4th thin film transistor (TFT) T104 and voltage compensation module 101, described
The grid of third thin film transistor (TFT) T103 is connected to the second scan line S102；
4th thin film transistor (TFT) T104 is connected between the first power supply V101 and capacitor C101, the 4th film crystal
The grid of pipe T104 is connected to the first scan line S101；
5th thin film transistor (TFT) T105 is connected between second source V102 and voltage compensation module 101, and the described 5th is thin
The grid of film transistor 105 is connected to control line E1；
6th thin film transistor (TFT) T106 is connected to the Organic Light Emitting Diode L1 and voltage that the pixel circuit 10 is driven
Between compensating module 101, the grid of the 6th thin film transistor (TFT) T106 is connected to control line E1；
Capacitor C101 is connected between second source V102 and the 4th thin film transistor (TFT) T104.
Here voltage compensation module 101 includes two class thin film transistor (TFT)s, is respectively driven as the pixel circuit 10
The first film transistor T101 of transistor and for provided for the pixel circuit 10 the voltage compensation film of offset voltage crystalline substance
Body pipe.
In practical applications, first film transistor T101 can be connected to first node N1, at this point, in pixel electricity
In road 10, since the grid of first film transistor T101 is connect with first node N1, first node N1 and capacitor C101
Connection, capacitor C101 are connect with second source V102, and D1 signals can control first film transistor grid potential, so as to
The electric current of Organic Light Emitting Diode L1 is flowed through in driving transistor enough as pixel circuit 10, control.
In addition, voltage compensation thin film transistor (TFT) can usually have it is multiple, by multiple voltage compensation thin film transistor (TFT)s come real
Now offset voltage is provided for the pixel circuit 10.For example, the voltage compensation thin film transistor (TFT) difference in the voltage compensation module 101
For：7th thin film transistor (TFT) T107 and the 8th thin film transistor (TFT) T108, the 7th thin film transistor (TFT) T107 and described 8th thin
Film transistor T108 is the identical thin film transistor (TFT) of performance parameter.Wherein, the 7th thin film transistor (TFT) T107 is connected to third film
Between transistor T103 and first film transistor T101, the grid of the 7th thin film transistor (TFT) T107 is connected to first node
N1, the 8th thin film transistor (TFT) T108 are connected between the 5th thin film transistor (TFT) T105 and first film transistor T101, and described
The grid of eight thin film transistor (TFT) T108 is connected to first node N1；
Correspondingly, the second thin film transistor (TFT) T102 is connected between data line D1 and voltage compensation module 101 specifically,
Two thin film transistor (TFT) T102 are connected between data line D1 and first film transistor T101.
Third thin film transistor (TFT) T103 is connected between the 4th thin film transistor (TFT) T104 and voltage compensation module 101, specifically
For：Third thin film transistor (TFT) T103 is connected between the 4th thin film transistor (TFT) T104 and the 7th thin film transistor (TFT) T107.
5th thin film transistor (TFT) T105 is connected between second source V102 and voltage compensation module 101, specially：The
Five thin film transistor (TFT) T105 are connected between second source V102 and the 8th thin film transistor (TFT) T108.
6th thin film transistor (TFT) T106 is connected to the Organic Light Emitting Diode L1 and voltage that the pixel circuit 10 is driven
Between compensating module 101, specially：6th thin film transistor (TFT) is connected to the Organic Light Emitting Diode that the pixel circuit is driven
Between L1 and first film transistor T101.
At this point, pixel circuit includes first film transistor T101, the second thin film transistor (TFT) T102, third film crystal
Pipe T103, the 4th thin film transistor (TFT) T104, the 5th thin film transistor (TFT) T105, the 6th thin film transistor (TFT) T106, the 7th film crystal
Pipe T107, the 8th thin film transistor (TFT) T108 and capacitor C101, wherein：
First film transistor T101 is connected between the 8th thin film transistor (TFT) T108 and the 6th thin film transistor (TFT) T106, and
And the grid of the first film transistor T101 is connected to first node N1；
Second thin film transistor (TFT) T102 is connected between data line D1 and first film transistor T101, and described second
The grid of thin film transistor (TFT) T102 is connected to the second scan line S102；
Third thin film transistor (TFT) T103 is connected between the first node N1 and the 7th thin film transistor (TFT) T107, and institute
The grid for stating third thin film transistor (TFT) T103 is connected to the second scan line S102；
4th thin film transistor (TFT) T104 is connected between the first power supply V101 and first node N1, and the 4th film
The grid of transistor T104 is connected to the first scan line S101；
5th thin film transistor (TFT) T105 is connected between the 8th thin film transistor (TFT) T108 and second source V102, and this
The grid of five thin film transistor (TFT) T105 is connected to control line E1；
It is thin that 6th thin film transistor (TFT) T106 is connected to the Organic Light Emitting Diode L1 and first that the pixel circuit is driven
Between film transistor T101, and the grid of the 6th thin film transistor (TFT) T106 is connected to control line E1；
7th thin film transistor (TFT) T107 is connected between third thin film transistor (TFT) T103 and first film transistor T101, and
And the 7th the grid of thin film transistor (TFT) T107 be connected to first node N1；
8th thin film transistor (TFT) T108 is connected between the 5th thin film transistor (TFT) T105 and first film transistor T101, and
And the 8th the grid of thin film transistor (TFT) T108 be connected to first node N1；
Capacitor C101 is connected between second source V102 and first node N1.
As described above, the 4th thin film transistor (TFT) T104 is connected between first node N1 and the first power supply V101, and the
The grid of four thin film transistor (TFT) T104 is connected to the first data line S101.Therefore, it can be provided by the first scan line S101
The first scanning signal, to control the on or off of the 4th thin film transistor (TFT) T104.
The grid of second thin film transistor (TFT) T102 and third thin film transistor (TFT) T103 are all connected to the second scan line S102, can
With the second scanning signal provided by the second scan line S102, to control the second thin film transistor (TFT) T102 and third film brilliant
Body pipe T103 on or off.
The grid of 5th thin film transistor (TFT) T105 and the 6th thin film transistor (TFT) T106 is all connected to control line E1, can pass through
The control signal that control line E1 is provided, the 5th thin film transistor (TFT) T105 and the 6th thin film transistor (TFT) T106 to be controlled to be connected or
Cut-off.
Certainly, the grid of first film transistor T101, the 7th thin film transistor (TFT) T107 and the 8th thin film transistor (TFT) T108
First node N1 is all connected to, can their on or off be controlled by the potential of first node N1.
In practical applications, the first power supply V101 usually can be initialization power supply, which is capable of providing just
Beginningization voltage VrefPixel circuit 10 is initialized.Certain first power supply V101 is electric to pixel as initialization power supply
When road 10 is initialized, it usually needs the first scanning signal provided by the first scan line S101, the 4th film of control are brilliant
Body pipe T104 is connected, and the potential of first node N1 is also V at this timeref, the potential of two electrodes of capacitor is respectively VrefWith
The potential that second source V102 is provided is known as VDD, usual second source V102 is the power supply of high potential, and the first power supply V101 is
The power supply namely V of low potentialDDMore than Vref。
Work as VDDMore than VrefWhen, in order to ensure the normal work of pixel circuit so that electric current can be by the 5th thin film transistor (TFT)
T105 flows to first film transistor T101, and eventually flows to machine light emitting diode L1, and electricity is provided for machine light emitting diode L1
Can, the transistor types p-type of each thin film transistor (TFT) or the difference of N-shaped in the pixel circuit 10 can be there are many connecting
Connect mode.
For example, when first film transistor T101, the 8th thin film transistor (TFT) T108 and the 6th thin film transistor (TFT) T106 are equal
During for p-type thin film transistor, since the source electrode of p-type thin film transistor is higher than drain voltage, electric current is flowed to by source electrode and drained, therefore
First film transistor T101 is connected to the specific connection between the 8th thin film transistor (TFT) T108 and the 6th thin film transistor (TFT) T106
Mode is：The source electrode of first film transistor T101 is connected to the drain electrode of the 8th thin film transistor (TFT) T108, and the first film is brilliant
The drain electrode of body pipe T101 is connected to the source electrode of the 6th thin film transistor (TFT) T106；When first film transistor T101, the 8th film are brilliant
When body pipe T108 and the 6th thin film transistor (TFT) T106 are n-type thin film transistor, since the source electrode of n-type thin film transistor is than leakage
Pole tension is low, and electric current flows to source electrode by draining, thus first film transistor T101 be connected to the 8th thin film transistor (TFT) T108 and
Specific connection mode between 6th thin film transistor (TFT) T106 is：The drain electrode of first film transistor T101 is connected to the 8th film
The source electrode of transistor T108, and the source electrode of first film transistor T101 is connected to the drain electrode of the 6th thin film transistor (TFT) T106.
It, also can be according to transistor types not for other thin film transistor (TFT)s, such as the 5th thin film transistor (TFT) T105 etc.
With using different connection modes.Specific to the 5th thin film transistor (TFT) T105, when the 5th thin film transistor (TFT) T105 is p-type thin film
During transistor, the source electrode of the 5th thin film transistor (TFT) T105 is connected to second source V102, the leakage of the 5th thin film transistor (TFT) T105
Pole is connected to the source electrode that the 8th thin film transistor (TFT) T108 is also p-type thin film transistor.For other thin film transistor (TFT)s, Yi Jigen
Different connection modes, just no longer repeat one by one here used by concrete type according to transistor.
In addition, in practical applications, which can also include the 9th thin film transistor (TFT) T109, as shown in Fig. 2,
9th thin film transistor (TFT) T109 is connected between the first power supply V101 and Organic Light Emitting Diode L1, and the 9th film is brilliant
The grid of body pipe T109 is connected to third scan line S103.
In practical applications, when being initialized by the first power supply V101 to pixel circuit 10, can pass through simultaneously
The third scanning signal that third scan line S103 is provided, the 9th thin film transistor (TFT) T109 of control are connected, can had in this way
It is formed into a loop between an electrode and the first power supply V101 of machine light emitting diode L1, the charge of the accumulation in release circuit can
To increase the service life of Organic Light Emitting Diode L1.
Certainly, which can also include the second capacitor C102, as shown in figure 3, second capacitor C102
It is connected between the second scan line S102 and the 4th thin film transistor (TFT) T104, after second capacitance C102 chargings, by wherein
A pole be connected with first node N1, buffering can be provided for the normal work of the pixel circuit 10.
Fig. 4 is the pixel circuit 10 that the 9th thin film transistor (TFT) T109 and the second capacitor C102 are increased in practical application,
The voltage compensation module 101 includes first film transistor T101, the 7th thin film transistor (TFT) T107 at this time and the 8th film is brilliant
Body pipe T107；Fig. 5 is the drive signal sequence diagram for driving the pixel circuit 10 shown in Fig. 4, with reference to Fig. 4 and Fig. 5
The pixel circuit 10 driving Organic Light Emitting Diode L1 specific driving methods to shine are illustrated, this method includes following step
Suddenly：
Step 11：Pixel circuit 10 is initialized.
With reference to Fig. 1 and Fig. 2, when reaching a time points, the first scan line S101 and third scan line S103 jump to low
Pressure, the 4th thin film transistor (TFT) T104 conductings that the first scan line S101 is controlled at this time, and third scan line S103 is controlled
The 9th thin film transistor (TFT) T109 conducting, and other thin film transistor (TFT)s end；First power supply V101 potentials are VrefTo pixel circuit
10 are initialized so that the potential of first node N1 is Vref, the potential of two electrodes of capacitor C101 is respectively VrefAnd VDD
(potential of second source V102)；Also, the first power supply V101 and Organic Light Emitting Diode L1 is formed into a loop, in release circuit
The charge of accumulation.
It should be noted that after completion is initialized, since the potential of first node N1 is Vref, can control simultaneously
First film transistor T101, the 7th thin film transistor (TFT) T107 and the 8th thin film transistor (TFT) T108 conductings.
When reaching b time points, the first scan line S101 and third scan line S103 jump to high pressure, complete to pixel electricity
The initialization on road 10, first film transistor T101, the 7th thin film transistor (TFT) T107 and the 8th thin film transistor (TFT) T108 are led at this time
It is logical, other thin film transistor (TFT)s cut-off including the 4th thin film transistor (TFT) T104 and the 9th thin film transistor (TFT) T109.To the picture
The initialization time section of plain circuit 10 is T1, and the size of the T1 can be set according to actual needs.
Step 12：Data write-in is carried out by data line D1.
When reaching c time points, the second scan line S102 jumps to low pressure, at this time the second scan line S102 controlled
Two thin film transistor (TFT) T102 and third thin film transistor (TFT) T103 conductings, and since the potential of first node N1 is Vref, can control
First film transistor T101 processed, the 7th thin film transistor (TFT) T107 and the 8th thin film transistor (TFT) T108 conductings, other films are brilliant
Body pipe ends.Electric current can be brilliant in data line D1, the second thin film transistor (TFT) T102, first film transistor T101, the 7th film
Body pipe T107, third thin film transistor (TFT) T103 and capacitor C101 flowings, it is final so that the potential of first node N1 is Vg, capacitance
Two electrode potentials of device C101 are respectively VgAnd VDD(potential of second source V102).
V can be determined by following formulag：
Vg=Vdata- ∣ VthT101&T107∣
Wherein, VdataThe potential provided by data line D1, VthT101&T107It is that first film transistor T101 and the 7th are thin
The series winding threshold voltage of film transistor T107, VgThe potential of first node N1 after being written for data.
When reaching d time points, data write-in is completed, the second scan line S102 jumps to high pressure at this time, so as to control the
Two thin film transistor (TFT) T102 and third thin film transistor (TFT) T103 cut-offs.In pixel circuit 10, the potential of first node N1 is Vg, energy
It is enough that first film transistor T101, the 7th thin film transistor (TFT) T107 and the 8th thin film transistor (TFT) T108 is controlled to be connected simultaneously.
The period that data write-in is carried out to the pixel circuit 10 is T2, can be set as needed in practical applications
The size (that is, time length of data write-in) of T2, naturally it is also possible to carry out multiple data write-in, do rising limit not to this here
It is fixed.
Step 13：Driving Organic Light Emitting Diode L1 shines.
When reaching e time points, control line E1 jumps to low pressure, the 5th thin film transistor (TFT) controlled by control line E1
T105 and the 6th thin film transistor (TFT) T106 conductings, and since the potential of first node N1 is VgSo that first film transistor
T101, the 7th thin film transistor (TFT) T107 and the 8th thin film transistor (TFT) T108 conductings, and other thin film transistor (TFT)s end.Electric current is by
Two power supply V102 (potential VDD), flow through the 5th thin film transistor (TFT) T105, the 8th thin film transistor (TFT) T108, first film transistor
T101 and the 6th thin film transistor (TFT) T106, flows to Organic Light Emitting Diode L1, so as to drive Organic Light Emitting Diode L1 hairs
Light.
Since the size of the electric current (being represented with I) is proportional to [VDD- Vg- ∣ VthT101&T108∣]2Namely：
I∝[VDD- Vg- ∣ VthT101&T108∣]2
Wherein, VDDFor the potential of second source V102, VgFor the potential of first node N1, VthT101&T108For the first film crystalline substance
The series winding threshold voltage of body pipe T101 and the 8th thin film transistor (TFT) T108, I are the driving current to Organic Light Emitting Diode L1.
Due to Vg=Vdata- ∣ VthT101&T107∣ can finally determine I ∝ [VDD- Vdata- VthT101&T108+VthT101&T107
]2.So as to by adjusting VthT101&T108And VthT101&T107Size, realize the voltage compensation to pixel circuit 10, particularly
Work as VthT101&T108With VthT101&T107I ∝ [V when equal in magnitudeDD- Vdata]2, I and V at this timeDDAnd VdataCorrelation, and and film crystal
The threshold voltage of pipe is unrelated, can so that compensation effect is more preferable.It usually can be by two identical thin film transistor (TFT)s of performance parameter
(for example the W/L of the raceway groove of two thin film transistor (TFT)s is identical, and active layer is using identical material etc.), respectively as the 7th film crystalline substance
Body pipe T107 and the 8th thin film transistor (TFT) T108 so that VthT101&T108With VthT101&T107It is equal in magnitude.In practical applications, it is
So that the performance parameter of the 7th thin film transistor (TFT) T107 and the 8th thin film transistor (TFT) T108 is identical, usually may be used identical
Two thin film transistor (TFT)s are respectively as the 7th thin film transistor (TFT) T107 and the 8th thin film transistor (TFT) T108.
Pass through this voltage compensation mode in pixel circuit 10, particularly VthT101&T108With VthT101&T107It is equal in magnitude
When, the electric current I ∝ [V for the Organic Light Emitting Diode L1 which is drivenDD- Vdata]2, the size of electric current I and the
Two power supply V102 and data line D1 are related, can be by regulating and controlling the potential and number of second source V102 in different pixels
According to the potential of line D1 so that the electric current of the Organic Light Emitting Diode L1 of driving is identical, finally so that luminous between each pixel connect
It reads more uniform.
It should be noted that in practical applications in voltage compensation module 101, mended for providing the voltage of offset voltage
The quantity for repaying thin film transistor (TFT) can also be 3 (or other quantities), by these voltage compensation thin film transistor (TFT)s come for picture
Plain circuit 10 provides offset voltage, and certainly, the connection mode of these voltage compensation thin film transistor (TFT)s can also be other modes,
Here it will not enumerate.
The pixel circuit 10 provided using the embodiment of the present application 1, since in the pixel circuit 10, voltage can be passed through
Multiple voltage compensation thin film transistor (TFT)s in compensating module 101 compensate the voltage in the pixel circuit 10 so that in picture
In plain circuit 10, under the potential of second source V102 and the potential same case of data line D1, even if in each film crystalline substance
In the case of the threshold voltage difference of body pipe, the difference for the size of current for flowing to Organic Light Emitting Diode can be also reduced so that
Different organic light-emitting diode brightness is more uniform, and so that light emission luminance is more equal between the different pixels of AMOLED
It is even.
Embodiment 2
It mentions in embodiment 1, the voltage compensation module of pixel circuit can include that grid be connected to first node
One thin film transistor (TFT) and two voltage compensation thin film transistor (TFT)s (are respectively the 7th thin film transistor (TFT) and the 8th film crystal
Pipe), the two voltage compensation thin film transistor (TFT)s can provide compensation electricity by the connection mode in embodiment 1 for pixel circuit
Pressure, so as to solve the problems of the prior art.But in practical applications, voltage compensation mould the two voltage compensations in the block are thin
Film transistor can also provide offset voltage by other connection modes for pixel circuit, thus constitute the application's
Embodiment 2.The embodiment of the present application 2 provides a kind of pixel circuit, as shown in fig. 6, the pixel circuit 20 includes：
First film transistor T201, the second thin film transistor (TFT) T202, third thin film transistor (TFT) T203, the 4th film crystal
Pipe T204, the 5th thin film transistor (TFT) T205, the 6th thin film transistor (TFT) T206, the tenth thin film transistor (TFT) T2010, the 11st film are brilliant
Body pipe T2011 and capacitor C201, wherein：
First film transistor T201 be connected to the 5th thin film transistor (TFT) T205 and the 11st thin film transistor (TFT) T2011 it
Between, the grid of first film transistor T201 is connected to second node N2；
Second thin film transistor (TFT) T202 is connected between data line D2 and the tenth thin film transistor (TFT) T2010, second film
The grid of transistor T202 is connected to the second scan line S202；
Third thin film transistor (TFT) T203 is connected between second node N2 and first film transistor T201, the third film
The grid of transistor T203 is connected to the second scan line S202；
4th thin film transistor (TFT) T204 is connected between the first power supply V201 and second node N2, the 4th thin film transistor (TFT)
The grid of T204 is connected to the first scan line S201；
5th thin film transistor (TFT) T205 is connected between first film transistor T201 and second source V202, and the 5th is thin
The grid of film transistor T205 is connected to control line E2；
6th thin film transistor (TFT) T206 is connected to the Organic Light Emitting Diode L2 and the 11st that the pixel circuit is driven
Between thin film transistor (TFT) T2011, the grid of the 6th thin film transistor (TFT) T206 is connected to control line E2；
Tenth thin film transistor (TFT) T2010 is connected between the second thin film transistor (TFT) T202 and first film transistor T201,
The grid of tenth thin film transistor (TFT) T2010 is connected to second node N2；
11st thin film transistor (TFT) T2011 be connected to first film transistor T201 and the 6th thin film transistor (TFT) T206 it
Between, the grid of the 11st thin film transistor (TFT) T2011 is connected to second node N2；
Capacitor C201 is connected between second source V202 and second node N2.
In the pixel circuit 20, voltage compensation module also includes first film transistor T201 and two voltage compensations
Thin film transistor (TFT), the two voltage compensation thin film transistor (TFT)s are referred to as the tenth thin film transistor (TFT) T2010 and the 11st film
Transistor T2011.Tenth thin film transistor (TFT) T2010 and the 11st thin film transistor (TFT) T2011 pass through connection side as shown in Figure 6
Formula also can be 20 offset voltage of pixel circuit.
In pixel circuit 20, the driving transistor in the first film transistor T201 pixel circuits 20, grid connection
On second node N2.
In the pixel circuit 20, according to the connection mode of thin film transistor (TFT), it can be carried by the first scan line S201
The first scanning signal supplied, to control the on or off of the 4th thin film transistor (TFT) T204, can pass through the second scan line
The second scanning signal that S202 is provided, the second thin film transistor (TFT) T202 and third thin film transistor (TFT) T203 to be controlled to be connected or
Cut-off, can be by the control signal that control line E2 is provided, to control the 5th thin film transistor (TFT) T205 and the 6th film crystal
Pipe T206 on or off, certainly, first film transistor T201, the tenth thin film transistor (TFT) T2010 and the 11st film are brilliant
The grid of body pipe T2011 is all connected to second node N2, can by the potential of second node N2 come control their conducting or
Person ends.
First power supply V201 can also be initialization power supply, which is capable of providing initialization voltage VrefTo picture
Plain circuit 20 is initialized.
As the potential V of second sourceDDMore than the potential V of the first power supply V201refWhen, it is normal in order to ensure pixel circuit
Work so that electric current can flow to first film transistor T201, and eventually flow to organic hair by the 5th thin film transistor (TFT) T205
Optical diode L2 provides electric energy for Organic Light Emitting Diode L2, each thin film transistor (TFT) in the pixel circuit 20
The difference of transistor types p-type or N-shaped, can be there are many connection mode.
For example, as first film transistor T201, the 5th thin film transistor (TFT) T205 and the 11st thin film transistor (TFT) T2011
When being p-type thin film transistor, since the source electrode of p-type thin film transistor is higher than drain voltage, electric current is flowed to by source electrode and drained, because
This first film transistor T201 is connected to specific between the 5th thin film transistor (TFT) T205 and the 11st thin film transistor (TFT) T2011
Connection mode is：The source electrode of first film transistor T201 is connected to the drain electrode of the 5th thin film transistor (TFT) T205, and first is thin
The drain electrode of film transistor T201 is connected to the source electrode of the 11st thin film transistor (TFT) T2011；As first film transistor T201, the 5th
When thin film transistor (TFT) T205 and the 11st thin film transistor (TFT) T2011 is specially n-type thin film transistor, due to n-type thin film crystalline substance
The source electrode of body pipe is lower than drain voltage, and electric current flows to source electrode by draining, therefore to be connected to the 5th thin by first film transistor T201
Specific connection mode between film transistor T205 and the 11st thin film transistor (TFT) T2011 is：First film transistor T201's
Drain electrode is connected to the source electrode of the 5th thin film transistor (TFT) T205, and to be connected to the 11st thin for the source electrode of first film transistor T201
The drain electrode of film transistor T2011.
For other thin film transistor (TFT)s, such as the 6th thin film transistor (TFT) T206 of the 5th thin film transistor (TFT) T205 etc., also can
Different connection modes is used according to the difference of transistor types.Specific to the 5th thin film transistor (TFT) T205, when the 5th film
When transistor T205 is n-type thin film transistor, the drain electrode of the 5th thin film transistor (TFT) T205 is connected to second source V202, this
The source electrode of five thin film transistor (TFT) T205 is connected to the drain electrode that first film transistor T201 is also n-type thin film transistor.For it
Its thin film transistor (TFT) and according to different connection modes used by the concrete type of transistor, just no longer goes to live in the household of one's in-laws on getting married one by one here
It states.
In addition, in practical applications, which can also include the 9th thin film transistor (TFT) T209, as shown in fig. 7,
9th thin film transistor (TFT) T209 is connected between the first power supply V201 and Organic Light Emitting Diode L2, and the 9th film is brilliant
The grid of body pipe T209 is connected to third scan line S203.
When being initialized by the first power supply V201 to pixel circuit 20, third scan line S203 can be passed through simultaneously
The third scanning signal of offer, the 9th thin film transistor (TFT) T209 of control are connected, in this way can be in Organic Light Emitting Diode L2
An electrode and the first power supply V201 between be formed into a loop, the charge of the accumulation in release circuit can increase organic light emission
The service life of diode L2.
Certainly, which can also include the second capacitor C202, as shown in figure 8, second capacitor C202
It is connected between the second scan line S202 and the 4th thin film transistor (TFT) T204, after second capacitance C202 chargings, by wherein
A pole be connected with second node N2, buffering can be provided for the normal work of the pixel circuit 20.
Fig. 9 is the pixel circuit 20 that the 9th thin film transistor (TFT) T209 and the second capacitor C202 are increased in practical application,
Figure 10 is the drive signal sequence diagram for driving the pixel circuit 20 shown in Fig. 9, with reference to Fig. 9 and Figure 10 to the pixel
The specific driving method that circuit 20 drives Organic Light Emitting Diode L2 to shine illustrates, and this method comprises the following steps：
Step 21：Pixel circuit 20 is initialized.
Same as Example 1, when reaching f time points, the first scan line S201 and third scan line S203 jump to low
Pressure, the 4th thin film transistor (TFT) T204 conductings that the first scan line S201 is controlled at this time, and third scan line S203 is controlled
The 9th thin film transistor (TFT) T209 conducting, and other thin film transistor (TFT)s end；First power supply V201 potentials are VrefTo pixel circuit
20 are initialized so that the potential of second node N2 is Vref, the potential of two electrodes of capacitor C201 is respectively VrefAnd VDD
The potential of second source V202；Also, the first power supply V201 and Organic Light Emitting Diode L1 is formed into a loop, the product in release circuit
Tired charge.
It should be noted that after completion is initialized, since the potential of second node N2 is Vref, can control simultaneously
First film transistor T201, the tenth thin film transistor (TFT) T2010 and the 11st thin film transistor (TFT) T2011 conductings.
When reaching g time points, the first scan line S201 and third scan line S203 jump to high pressure, complete to pixel electricity
The initialization on road 20, at this time first film transistor T201, the tenth thin film transistor (TFT) T2010 and the 11st thin film transistor (TFT)
T2011 is connected, other thin film transistor (TFT)s cut-off including the 4th thin film transistor (TFT) T204 and the 9th thin film transistor (TFT) T209.
Initialization time section to the pixel circuit 20 is T4, and the size of the T4 can also be set according to actual needs, here
It will not be described.
Step 22：Data write-in is carried out by data line D2.
When reaching h time points, the second scan line S202 jumps to low pressure, at this time the second scan line S202 controlled
Two thin film transistor (TFT) T202 and third thin film transistor (TFT) T203 conductings, and since the potential of second node N2 is Vref, can control
First film transistor T201 processed, the tenth thin film transistor (TFT) T2010 and the 11st thin film transistor (TFT) T2011 conductings, and it is other
Thin film transistor (TFT) ends.Electric current can be in data line D2, the second thin film transistor (TFT) T202, first film transistor T201, the tenth
Thin film transistor (TFT) T2010, third thin film transistor (TFT) T203 and capacitor C201 flowings, it is final so that the potential of second node N2 is
Vg, two electrode potentials of capacitor C201 are respectively VgAnd VDDThe potential of second source V202.
It is same as Example 1, it can also determine V by following formulag：
Vg=Vdata- ∣ VthT201&T2010∣
Wherein, VdataThe potential provided by data line D2, VthT201&T2010It is that first film transistor T201 and the tenth are thin
The series winding threshold voltage of film transistor T2010, VgThe potential of second node N2 after being written for data.
When reaching j time points, data write-in is completed, the second scan line S202 jumps to high pressure at this time, so as to control the
Two thin film transistor (TFT) T202 and third thin film transistor (TFT) T203 cut-offs.In pixel circuit 20, the potential of second node N2 is Vg, energy
It is enough that first film transistor T201, the tenth thin film transistor (TFT) T2010 and the 11st thin film transistor (TFT) T2011 is controlled to be connected simultaneously.
The period that data write-in is carried out to the pixel circuit 20 is T5, can be set as needed in practical applications
The size of T5 is that is, the time length of data write-in, naturally it is also possible to carry out multiple data write-in, do rising limit not to this here
It is fixed.
Step 23：Driving Organic Light Emitting Diode L2 shines.
When reaching k time points, control line E2 jumps to low pressure, the 5th thin film transistor (TFT) controlled by control line E2
T205 and the 6th thin film transistor (TFT) T206 conductings, and since the potential of second node N2 is VgSo that first film transistor
T201, the tenth thin film transistor (TFT) T2010 and the 11st thin film transistor (TFT) T2011 conductings, and other thin film transistor (TFT)s end.Electric current
It is V by second source V202 potentialsDD, it is brilliant to flow through the 5th thin film transistor (TFT) T205, first film transistor T201, the 11st film
Body pipe T2011 and the 6th thin film transistor (TFT) T206, flows to Organic Light Emitting Diode L2, so as to drive the Organic Light Emitting Diode
L2 shines.
Also, since the size of electric current I is also proportional to [VDD- Vg- ∣ VthT201&T2011∣]2Namely：
I∝[VDD- Vg- ∣ VthT201&T2011∣]2
Wherein, VDDFor the potential of second source V202, VgFor the potential of second node N2, VthT201&T2011For the first film
The series winding threshold voltage of transistor T201 and the 11st thin film transistor (TFT) T2011, I are the driving electricity to Organic Light Emitting Diode L2
Stream.
Due to Vg=Vdata- VthT201&T2010, can finally determine I ∝ [VDD- Vdata- VthT201&T2011+VthT201&T2010
]2.So as to by adjusting VthT201&T2011And VthT201&T2010Size, realize the voltage compensation to pixel circuit 20, especially
It is to work as VthT201&T2011With VthT201&T2010I ∝ [V when equal in magnitudeDD- Vdata]2, I and V at this timeDDAnd VdataCorrelation, and and film
The threshold voltage of transistor is unrelated, can so that compensation effect is more preferable.It in practical applications, usually can be identical by performance parameter
Such as two thin film transistor (TFT)s of two thin film transistor (TFT)s raceway groove W/L it is identical, active layer is using identical material etc., respectively
As the tenth thin film transistor (TFT) T2010 and the 11st thin film transistor (TFT) T2011 so that VthT201&T2011With VthT201&T2010Size phase
Deng.Certainly, in practical applications, in order to enable the performance of the tenth thin film transistor (TFT) T2010 and the 11st thin film transistor (TFT) T2011
Parameter is identical, and two identical thin film transistor (TFT)s generally also may be used respectively as the tenth thin film transistor (TFT) T2010 and the tenth
One thin film transistor (TFT) T2011.
Pass through this voltage compensation mode in pixel circuit 20, particularly VthT201&T2011With VthT201&T2010It is equal in magnitude
When, the electric current I ∝ [V for the Organic Light Emitting Diode L2 which is drivenDD- Vdata]2, the size of electric current I and the
Two power supply V202 and data line D2 are related, and unrelated with the threshold voltage of thin film transistor (TFT), therefore can be in different pixels
In, by controlling the potential of second source V202 and the potential of data line D2, it can cause the drive of Organic Light Emitting Diode L2
Streaming current is identical, finally so that the liaison that shines between each pixel is more uniform.
The embodiment of the present application can also provide a kind of pixel, can include what the embodiment of the present application 1 was provided in the pixel
The Organic Light Emitting Diode L1 that pixel circuit 10 and the pixel circuit 10 are driven；Certainly, this can also be included in the pixel
The Organic Light Emitting Diode L2 that the pixel circuit 20 and the pixel circuit 20 that application embodiment 2 is provided are driven.Have no to doubt
It asks, which can be used in solving the problems of the prior art, just repeat no more here.
In addition, the embodiment of the present application can also provide a kind of display device, it is real which includes multiple the application
Apply the pixel that example is provided.
Since the display device includes the pixel that the embodiment of the present application provided, can solve of the prior art
Problem, just it will not be described here.In addition, in practical applications, the display device due to light emission luminance more with usually
Usage experience of the user to the display device can be further improved, so as to improve the commercial value of the display device.
It should be noted that the term " comprising ", "comprising" or its any other variant in the embodiment of the present application are intended to
Cover non-exclusive inclusion, so that process, method, commodity or equipment including a series of elements not only include those
Element, but also including other elements that are not explicitly listed or further include as this process, method, commodity or set
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
Also there are other identical elements in the process including element, method, commodity or equipment.
It these are only embodiments herein, be not limited to the application.To those skilled in the art,
The application can have various modifications and variations.All any modifications made within spirit herein and principle, equivalent replacement,
Improve etc., it should be included within the scope of claims hereof.
Claims (10)
1. a kind of pixel circuit, which is characterized in that including：Voltage compensation module, the second thin film transistor (TFT), third film crystal
Pipe, the 4th thin film transistor (TFT), the 5th thin film transistor (TFT), the 6th thin film transistor (TFT) and capacitor, wherein：
Voltage compensation module is connected between the 5th thin film transistor (TFT) and the 6th thin film transistor (TFT), is wrapped in the voltage compensation module
It includes and is mended as the first film transistor of the pixel circuit driving transistor and multiple voltages for being used to provide offset voltage
Repay thin film transistor (TFT)；
Second thin film transistor (TFT) is connected between data line and voltage compensation module, the grid connection of second thin film transistor (TFT)
In the second scan line；
Third thin film transistor (TFT) is connected between the 4th thin film transistor (TFT) and voltage compensation module, the third thin film transistor (TFT)
Grid is connected to the second scan line；
4th thin film transistor (TFT) is connected between the first power supply and capacitor, and the grid of the 4th thin film transistor (TFT) is connected to
Scan line；
5th thin film transistor (TFT) is connected between second source and voltage compensation module, and the grid of the 5th thin film transistor (TFT) connects
It is connected to control line；
6th thin film transistor (TFT) is connected between the Organic Light Emitting Diode that the pixel circuit driven and voltage compensation module,
The grid of 6th thin film transistor (TFT) is connected to control line；
Capacitor is connected between second source and the 4th thin film transistor (TFT).
2. pixel circuit as described in claim 1, which is characterized in that
The grid of the voltage compensation mould first film transistor in the block is connected to first node；
The voltage compensation mould voltage compensation thin film transistor (TFT) in the block includes the 7th thin film transistor (TFT) and the 8th thin film transistor (TFT),
Wherein, the 7th thin film transistor (TFT) is connected between third thin film transistor (TFT) and first film transistor, the 7th film crystal
The grid of pipe is connected to first node, the 8th thin film transistor (TFT) be connected to the 5th thin film transistor (TFT) and first film transistor it
Between, the grid of the 8th thin film transistor (TFT) is connected to first node；
Correspondingly, the second thin film transistor (TFT) is connected between data line and first film transistor；
Third thin film transistor (TFT) is connected between the 4th thin film transistor (TFT) and the 7th thin film transistor (TFT)；
5th thin film transistor (TFT) is connected between second source and the 8th thin film transistor (TFT)；
6th thin film transistor (TFT) be connected to the Organic Light Emitting Diode that the pixel circuit driven and first film transistor it
Between.
3. pixel circuit as claimed in claim 2, which is characterized in that the 7th thin film transistor (TFT) and the 8th film are brilliant
The body pipe thin film transistor (TFT) identical for performance parameter.
4. the pixel circuit as described in 2 and 3 any one of claim, which is characterized in that
The potential that first power supply is provided is less than the potential that the second source is provided；And
The first film transistor, the 8th thin film transistor (TFT) and the 6th thin film transistor (TFT) are p-type thin film crystalline substance
Body pipe；Then,
First film transistor is connected between the 8th thin film transistor (TFT) and the 6th thin film transistor (TFT), specially：
The source electrode of first film transistor is connected to the drain electrode of the 8th thin film transistor (TFT), and the drain electrode of first film transistor connects
It is connected on the source electrode of the 6th thin film transistor (TFT).
5. the pixel circuit as described in 2 and 3 any one of claim, which is characterized in that
The potential that first power supply is provided is less than the potential that the second source is provided；And
The first film transistor, the 8th thin film transistor (TFT) and the 6th thin film transistor (TFT) are n-type thin film crystalline substance
Body pipe；Then,
First film transistor is connected between the 8th thin film transistor (TFT) and the 6th thin film transistor (TFT), specially：
The drain electrode of first film transistor is connected to the source electrode of the 8th thin film transistor (TFT), and the source electrode of first film transistor connects
It is connected on the drain electrode of the 6th thin film transistor (TFT).
6. pixel circuit as described in claim 1, which is characterized in that
The grid of the voltage compensation mould first film transistor in the block is connected to second node；
The voltage compensation mould voltage compensation thin film transistor (TFT) in the block includes the tenth thin film transistor (TFT) and the 11st film crystal
Pipe, wherein, the tenth thin film transistor (TFT) is connected between the second thin film transistor (TFT) and first film transistor, and the tenth film is brilliant
The grid of body pipe is connected to second node, and the 11st thin film transistor (TFT) is connected to first film transistor and the 6th thin film transistor (TFT)
Between, the grid of the 11st thin film transistor (TFT) is connected to second node；
Correspondingly, the second thin film transistor (TFT) is connected between data line and the tenth thin film transistor (TFT)；
Third thin film transistor (TFT) is connected between the 4th thin film transistor (TFT) and the 11st thin film transistor (TFT)；
5th thin film transistor (TFT) is connected between second source and first film transistor；
6th thin film transistor (TFT) is connected to the Organic Light Emitting Diode and the 11st thin film transistor (TFT) that the pixel circuit is driven
Between.
7. pixel circuit as described in claim 1, which is characterized in that the pixel circuit further includes：It is connected to the first power supply
The 9th thin film transistor (TFT) between the Organic Light Emitting Diode that is driven of the pixel circuit, the 9th thin film transistor (TFT)
Grid is connected to third scan line.
8. pixel circuit as described in claim 1, which is characterized in that the pixel circuit further includes：
The second capacitor being connected between the second scan line and the 4th thin film transistor (TFT).
9. a kind of pixel, which is characterized in that the pixel include pixel circuit as described in claim 1~8 any one with
And the Organic Light Emitting Diode that the pixel circuit is driven.
10. a kind of display device, which is characterized in that the display device includes multiple pixels as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710002030.XA CN108269533B (en) | 2017-01-03 | 2017-01-03 | Pixel circuit, pixel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710002030.XA CN108269533B (en) | 2017-01-03 | 2017-01-03 | Pixel circuit, pixel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108269533A true CN108269533A (en) | 2018-07-10 |
| CN108269533B CN108269533B (en) | 2019-12-24 |
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| CN111402805A (en) * | 2020-04-26 | 2020-07-10 | 合肥视涯技术有限公司 | Pixel circuit, silicon-based display panel and display device |
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| CN108269533B (en) | 2019-12-24 |
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