CN205541822U - Pixel circuit , array substrate , display panel and display device - Google Patents
Pixel circuit , array substrate , display panel and display device Download PDFInfo
- Publication number
- CN205541822U CN205541822U CN201620279754.XU CN201620279754U CN205541822U CN 205541822 U CN205541822 U CN 205541822U CN 201620279754 U CN201620279754 U CN 201620279754U CN 205541822 U CN205541822 U CN 205541822U
- Authority
- CN
- China
- Prior art keywords
- transistor
- pole
- initialization
- driving transistor
- grid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The utility model provides a pixel circuit, array substrate, display panel and display device. Pixel circuit includes that light emitting component, drive transistor, a storage capacitance, luminous control module, data write in module and compensation module into, and data are write in the module into and are write in into at compensation stage control data voltage vdata drive transistor's second ploe, the compensation module is connected with drive transistor's grid at compensation regulation in phase drive transistor's first ploe to on state current that control drive transistor switched on and controlled drive transistor is by drive transistor's second ploe flow direction drive transistor's first ploe, is vdata+Vth until the current potential of drive transistor's grid, and vth is drive transistor's threshold voltage. The utility model provides a thereby prior art can't lead to the poor problem of display panel brightness uniformity nature at luminous stage compensation drive transistor's threshold voltage.
Description
Technical field
This utility model relates to Display Technique field, particularly relates to a kind of image element circuit, array base palte, display
Panel and display device.
Background technology
(Active Matrix Organic Light Emitting Diode, active matrix has AMOLED
Machine light emitting diode) can luminescence be to be driven by the electric current driving transistor to produce when saturation,
During because inputting identical gray scale voltage, the different threshold voltage of described driving transistor can result in not
Same driving electric current, causes the discordance of electric current.And LTPS (low-temperature polysilicon silicon technology) processing procedure upper-level threshold
The uniformity of threshold voltage Vth is excessively poor, and Vth also has drift simultaneously, the most existing pixel-driving circuit
Brightness uniformity is the most very poor.
As it is shown in figure 1, existing image element circuit include the first transistor T1, transistor seconds T2, the 3rd
Transistor T3, the 4th transistor T4, the 5th transistor T5, the 6th transistor T6, the 7th transistor T7,
First electric capacity C1 and Organic Light Emitting Diode OLED, wherein, T3 is for driving transistor, the first of T3
Pole is accessed second pole of high level VDD, T3 and is connected by the anode of T6 with OLED, the moon of OLED
Low level VSS is accessed in pole.In FIG, C1 is arranged between the grid of T3 and second pole of T7, and
And, first pole of T5 and first pole of T7 are all with the reference voltage input terminal of input reference voltage Vref even
Connect.Existing image element circuit as shown in Figure 1 owing to there is parasitic capacitance Cgs between the grid source of T3, from
And when high level VDD occurs coupling, the current potential of the grid driving transistor T3 can be produced impact,
The problem causing maintaining the current potential of the grid driving transistor T3.In FIG, EM is luminous control
Signal input part processed, G is data write control signal inputs, and Vdata is data voltage, at the beginning of Vinit is
Beginningization voltage, Re is initialization control signal input.
Utility model content
Main purpose of the present utility model is to provide a kind of image element circuit, array base palte and display device, solves
Certainly prior art is only capable of the grid driving transistor at initial phase, and cannot mend in glow phase
Repay drive transistor threshold voltage thus cause display floater brightness uniformity difference problem.
In order to achieve the above object, this utility model provides a kind of image element circuit, including light-emitting component, drives
Dynamic transistor, the first storage electric capacity, light emitting control module, Data write. module and compensating module, wherein,
First end of described first storage electric capacity is connected with the grid of described driving transistor, described first storage
Second end of electric capacity and the first power supply signal input connect；
First pole of described driving transistor is defeated with described first power supply signal by described light emitting control module
Entering end to connect, the first pole of described driving transistor is also by described compensating module and described first storage electric capacity
First end connect；
Second pole of described driving transistor is by described light emitting control module and the first of described light-emitting component
End connects, and the second pole of described driving transistor writes end also by described Data write. module with data voltage
Connect；
Second end of described light-emitting component is connected with second source signal input part；
Described Data write. module is for controlling data voltage Vdata by described data voltage at compensated stage
Write end writes the second pole of described driving transistor；
Described compensating module for controlling the first pole of described driving transistor and described driving at compensated stage
The grid of transistor connects, to control described driving transistor turns and to control the conducting of described driving transistor
Electric current is flowed to the first pole of described driving transistor by the second pole of described driving transistor, until described driving
The current potential of the grid of transistor be Vdata+Vth, Vth be the threshold voltage of described driving transistor.
During enforcement, image element circuit described in the utility model also includes the first initialization module；
Described first initialization module, is connected with the first end of described light-emitting component, at initial phase
The first end controlling described light-emitting component is connected with initialization voltage input.
During enforcement, image element circuit described in the utility model also includes the second initialization module；
Described second initialization module, is connected with the grid of described driving transistor, at initial phase
The grid controlling described driving transistor is connected with initialization voltage outfan.
During enforcement, described light emitting control module for controlling the first pole of described driving transistor in glow phase
It is connected with described first power supply signal input, and controls the second pole of described driving transistor and described luminescence
First end of element connects, thus controls described driving transistor turns to drive described light-emitting component luminous.
During enforcement, described Data write. module includes data writing transistor；
The grid of described data writing transistor is connected with compensating control signal input, described data write crystalline substance
First pole of body pipe is connected with the second pole of described driving transistor, the second pole of described data writing transistor
It is connected with data voltage write end.
During enforcement, described compensating module includes compensating transistor；
The grid of described compensation transistor is connected with described compensating control signal input, described compensation transistor
The first pole be connected with the first pole of described driving transistor, the second pole of described compensation transistor is driven with described
The grid of dynamic transistor connects.
During enforcement, described first initialization module includes the first initialization transistor；
The grid of described first initialization transistor is connected with initialization control signal input, at the beginning of described first
First pole of beginningization transistor is connected with described initialization voltage input, the described first initial initial crystalline
Second pole of pipe is connected with the first end of described light-emitting component；
Described second initialization module includes the second initialization transistor；
The grid of described second initialization transistor is connected with described initialization control signal input, and described
First pole of two initialization transistors is connected with the grid of described driving transistor, described second initial crystalline
Second pole of pipe is connected with described initialization voltage input.
During enforcement, described light emitting control module includes the first light emitting control transistor and the second light emitting control crystal
Pipe, wherein,
The grid of described first light emitting control transistor is connected with LED control signal input, described first
First pole of photocontrol transistor is connected with described first power supply signal input, and described first light emitting control is brilliant
Second pole of body pipe is connected with the first pole of described driving transistor；
The grid of described second light emitting control transistor is connected with described LED control signal input, and described
First pole of two light emitting control transistors is connected with the second pole of described driving transistor, the described second luminous control
Second pole of transistor processed is connected with the first end of described light-emitting component.
During enforcement, image element circuit described in the utility model also includes the second storage electric capacity；
First end of described second storage electric capacity is connected with the grid of described driving transistor, described second storage
Second end of electric capacity is connected with described initialization voltage input.
During enforcement, described light-emitting component is Organic Light Emitting Diode, and the first end of described light-emitting component is described
The anode of Organic Light Emitting Diode, the moon that the second end is described Organic Light Emitting Diode of described light emitting diode
Pole.
This utility model additionally provides a kind of array base palte, including underlay substrate, also includes being arranged at described lining
Multiple above-mentioned image element circuit on substrate.
During enforcement, array base palte described in the utility model also includes be arranged on described underlay substrate first
Power supply signal input line；
Described first power supply signal input line is connected with the first power supply signal input；Described first power supply signal
Input line is spatially in latticed setting.
During enforcement, array base palte described in the utility model also includes the scanning being arranged on described underlay substrate
Line, data wire, initialization voltage line, initialization control signal line and LED control signal line；
Described scan line is connected with compensating control signal input；
Described data wire is connected with data voltage write end；
Described initialization voltage line is connected with initialization voltage input；
Described initialization control signal line is connected with initialization control signal input；
Described LED control signal line is connected with LED control signal input.
This utility model additionally provides a kind of display floater, including above-mentioned array base palte.
This utility model additionally provides a kind of display device, including above-mentioned display floater.
Compared with prior art, this utility model is passed through at the first power supply signal input by initialization module
And between the grid of driving transistor, the electric capacity that capacitance is bigger is set, drive crystal to be maintained by this electric capacity
The current potential of the grid of pipe, and this utility model compared with prior art decreases reference voltage line, such that it is able to
Save space, be beneficial to realize narrow frame；This utility model more can pass through Data write. module and compensating module
Coordinate at compensated stage and control described driving transistor turns and control the electric conduction of described driving transistor
Stream is flowed to the first pole of described driving transistor by the second pole of described driving transistor, drives crystalline substance until described
The current potential of the grid of body pipe is Vdata+Vth (Vdata is data voltage), so that described in glow phase
Drive transistor grid current potential can the threshold voltage vt h of compensation for drive transistor, thus solve display
The uneven problem with brightness decay of panel luminance.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of existing image element circuit；
Fig. 2 is the structure chart of the image element circuit described in this utility model embodiment；
Fig. 3 A is the structure chart of the image element circuit described in another embodiment of this utility model；
Fig. 3 B is the structure chart of the image element circuit described in this utility model another embodiment；
Fig. 4 is the structure chart of the image element circuit described in the another embodiment of this utility model；
Fig. 5 is the structure chart of the image element circuit described in this utility model another embodiment；
Fig. 6 is the structure chart of the image element circuit described in another embodiment of this utility model；
Fig. 7 is the structure chart of the image element circuit described in the another embodiment of this utility model；
Fig. 8 is the structure chart of the image element circuit described in this utility model another embodiment；
Fig. 9 is the structure chart of the image element circuit described in another embodiment of this utility model；
Figure 10 is the circuit diagram of a specific embodiment of image element circuit described in the utility model；
Figure 11 is the sequential chart of this specific embodiment of image element circuit described in the utility model；
Figure 12 A is this specific embodiment work at initial phase of image element circuit described in the utility model
Make schematic diagram；
Figure 12 B is this specific embodiment work at compensated stage of image element circuit described in the utility model
Schematic diagram；
Figure 12 C is this specific embodiment work in glow phase of image element circuit described in the utility model
Schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technical side in this utility model embodiment
Case is clearly and completely described, it is clear that described embodiment is only that this utility model part is real
Execute example rather than whole embodiments.Based on the embodiment in this utility model, ordinary skill people
The every other embodiment that member is obtained under not making creative work premise, broadly falls into this utility model
The scope of protection.
As in figure 2 it is shown, the image element circuit described in this utility model embodiment includes light-emitting element E L, driving
Transistor DTFT, the first storage electric capacity C1, light emitting control module 11, Data write. module 12 and compensation
Module 13, wherein,
First end of described first storage electric capacity C1 is connected with the grid of described driving transistor DTFT, institute
The second end and the first power supply signal input V1 that state the first storage electric capacity C1 connect；
First pole of described driving transistor DTFT is by described light emitting control module 11 and described first electricity
Source signal input V1 connects, and first pole of described driving transistor DTFT is also by described compensating module
13 are connected with first end of described first storage electric capacity C1；
Second pole of described driving transistor DTFT is by described light emitting control module 11 and described luminous unit
First end of part EL connects, and second pole of described driving transistor DTFT writes mould also by described data
Block 12 is connected with data voltage write end；
It is denoted as Vdata by the data voltage of described data voltage write end write；
Second end of described light-emitting element E L is connected with second source signal input part V2；
Described Data write. module 12 writes described driving for controlling data voltage Vdata at compensated stage
Second pole of transistor DTFT；
Described compensating module 13 for control at compensated stage first pole of described driving transistor DTFT with
The grid of described driving transistor DTFT connects, and turns on and controls controlling described driving transistor DTFT
The conducting electric current of described driving transistor DTFT is flowed to described by second pole of described driving transistor DTFT
Drive first pole of transistor DTFT, until the current potential of the grid of described driving transistor DTFT is
Vdata+Vth；Vth is the threshold voltage of described driving transistor DTFT.
Image element circuit described in this utility model embodiment is owing to driving the grid and the of transistor DTFT
Increase by the first electric capacity C1 between one power supply signal input V1, owing to the capacitance of this first electric capacity C1 is remote
The capacitance of parasitic capacitance Cgs between grid source more than driving transistor DTFT, such that it is able to by being somebody's turn to do
First electric capacity C1 maintains the current potential of the grid driving transistor DTFT, to solve in prior art owing to driving
The existence of parasitic capacitance Cgs between grid and the source electrode of dynamic transistor and cause at the first power supply signal
The problem occurring to maintain the current potential of the grid driving transistor during coupling；
And the image element circuit described in this utility model embodiment passes through Data write. module 12 at compensated stage
Control second pole of data voltage Vdata write driver transistor DTFT, and controlled by compensating module 13
The grid of the first pole and described driving transistor DTFT of making described driving transistor DTFT is connected, thus
Coordinated by Data write. module 12 and compensating module 13 and control described driving transistor at compensated stage
The conducting electric current of DTFT conducting described driving transistor DTFT is by the of described driving transistor DTFT
Two poles flow to first pole of described driving transistor DTFT, until the grid of described driving transistor DTFT
Current potential be Vdata+Vth so that at the current potential of grid driving transistor DTFT described in glow phase
Can compensate for driving the threshold voltage vt h of transistor DTFT, thus it is even to solve display floater brightness disproportionation
The problem of brightness decay.
In the embodiment of image element circuit as shown in Figure 2, DTFT is p-type transistor, and V1 can be defeated
Go out high level, V2 can with output low level, but when practical operation, DTFT can also be that N-shaped is brilliant
Body pipe, V1, V2 can also be arranged to as required export different level values, not repeat them here.
Image element circuit described in this utility model embodiment needs accounting bigger when forming the first electric capacity C1
Area (owing to the capacitance of the first electric capacity C1 is much bigger compared with Cgs), therefore left and right directions resistance also
Can reduce, (stable) be stablized for voltage during generation coupling more favourable.
Further, the image element circuit described in this utility model embodiment is compared to the existing pixel shown in Fig. 1
Reference voltage input terminal is decreased for circuit, in the existing array base palte including image element circuit, reference
Pressure-wire needs to enter in effective display area in all of image element circuit, therefore all of on array base palte
All must horizontally or vertically connect up in pixel cell, now can occupy a lot of space, pixel layout space becomes
Little.And include being not provided with reference voltage on the array base palte of the image element circuit described in this utility model embodiment
Line, hence for have in less space integrated high-resolution realize helpful.
Concrete, as shown in Figure 3A, the image element circuit described in this utility model embodiment also includes at the beginning of first
Beginningization module 141；
Described first initialization module 141, is connected with the first end of described light-emitting element E L, for just
First end of light-emitting element E L described in beginningization stage control is connected with initialization voltage input；At the beginning of described
Beginningization voltage input end input initialization voltage Vinit；
Image element circuit described in this utility model embodiment can be initially by the first initialization module 141
The current potential of the first end of light-emitting component is initialized by the change stage.
Concrete, as shown in Figure 3 B, image element circuit described in the utility model also includes the second initialization mould
Block 142；
Described second initialization module 142, is connected with the grid of described driving transistor DTFT, is used for
Initial phase controls the grid of described driving transistor DTFT and is connected with initialization voltage input；By institute
State initialization voltage input input initialization voltage Vinit；
Image element circuit described in this utility model embodiment can be initially by the second initialization module 142
The change stage current potential of the grid to driving transistor DTFT initializes.
Concrete, in the embodiment shown in fig. 4, described light emitting control module 11 and LED control signal
Input connects；LED control signal EM is inputted by described LED control signal input；
Described light emitting control module 11 is for controlling under the control of LED control signal EM in glow phase
First pole of described driving transistor DTFT is connected with described first power supply signal input V1, and controls
Described second pole of driving transistor DTFT is connected with the first end of described light-emitting element E L, thus controls
Described driving transistor DTFT conducting is to drive described light-emitting element E L luminous.
Image element circuit described in this utility model embodiment by described light emitting control module 11 in glow phase
Control drive drive first pole of transistor DTFT, the second pole respectively with V1, described light-emitting element E L
First end connect, can control drive transistor DTFT glow phase conducting and driven for emitting lights element
EL is luminous.
In the embodiment as shown in fig .4, described Data write. module 12 and described compensating module 13 all with
Compensating control signal input connects；By described compensating control signal input input offset control signal
GAT；
Described Data write. module 12, is controlled at compensated stage under the control of described compensating control signal GAT
Making the second pole write data voltage Vdata of described driving transistor DTFT, described compensating module 13 exists
Compensated stage controls the first pole and the grid of described driving transistor DTFT of described driving transistor DTFT
Connect；
Described first initialization module 141 and described second initialization module 142 are defeated with initialization control signal
Enter end to connect, by described initialization control signal input input initialization control signal RST；
Described first initialization module 141 at initial phase in the control of described initialization control signal RST
Under system, control the first of light-emitting element E L and terminate into the initialization inputted by described initialization voltage input
Voltage Vinit；
Described second initialization module 142 at initial phase in the control of described initialization control signal RST
Under system, control to drive the grid of transistor DTFT to access the initialization electricity inputted by initialization voltage input
Pressure Vinit.
The transistor used in all embodiments of this utility model can be all thin film transistor (TFT) or field effect transistor
Or the device that other characteristics are identical.In this utility model embodiment, for distinguishing transistor in addition to grid
The two poles of the earth, wherein will be referred to as the first pole in a pole, and another pole is referred to as the second pole, described first can be extremely source electrode or
Drain electrode, the most described second extremely can should be drain electrode or source electrode mutually.Can additionally, distinguish according to the characteristic of transistor
Transistor to be divided into n-type transistor or p-type transistor.At the driving electricity that this utility model embodiment provides
Lu Zhong, all transistors are all the explanations carried out as a example by p-type transistor, it is contemplated that using n
It is that those skilled in the art can readily occur under not making creative work premise when transistor npn npn realizes
, the most also in embodiment protection domain of the present utility model.
Concrete, as it is shown in figure 5, described Data write. module 12 can include data writing transistor T1:
The grid of described data writing transistor T1 is connected with compensating control signal input, and described data are write
Second pole of the first pole and described driving transistor DTFT that enter transistor T1 is connected, and described data write
Second pole of transistor T1 is connected with data voltage write end；
Described compensating module 13 may comprise compensating for transistor T2；
The grid of described compensation transistor T2 is connected with described compensating control signal input, described compensation crystalline substance
First pole of body pipe T2 is connected with first pole of described driving transistor DTFT, described compensation transistor T2
The second pole be connected with the grid of described driving transistor DTFT；
By described compensating control signal input input offset control signal GAT；Write by described data voltage
The data voltage entering end write is denoted as Vdata.
In the embodiment of the image element circuit shown in Fig. 5, T1 and T2 is p-type TFT, at compensated stage
Compensating control signal GAT is low level, so that T1 and T2 turns on.But when practical operation,
T1, T2 can also be replaced by n-type transistor, when now T1 and T2 is grid access high level signal
Conducting, does not limits the transistor types of T1 and T2 at this.
Concrete, as shown in Figure 6, described first initialization module 141 can include the first initial crystalline
Pipe T3:
The grid of described first initialization transistor T3 is connected with described initialization control signal input, institute
The first pole stating the first initialization transistor T3 is connected with described initialization voltage input, at the beginning of described first
Second pole of beginningization transistor T3 is connected with the first end of described light-emitting element E L；
Described second initialization module 142 can include the second initialization transistor T4:
The grid of described second initialization transistor T4 is connected with initialization control signal input, and described
First pole of two initialization transistor T4 is connected with the grid of described driving transistor DTFT, and described second
Second pole of initialization transistor T4 is connected with initialization voltage input；
By described initialization control signal input input initialization control signal RST, described initialize electricity
Pressure input input initialization voltage Vinit.
In the embodiment of image element circuit as shown in Figure 6, T3 and T4 is p-type transistor, initially
The change stage, initialization control signal RST was low level, so that T3 and T4 turns on.But in reality
During operation, T3, T4 can also be replaced by n-type transistor, and now T3 and T4 is that grid accesses high electricity
Turn on during ordinary mail, at this, transistor types of T3 and T4 is not limited.
Concrete, as it is shown in fig. 7, described light emitting control module include the first light emitting control transistor T5 and
Second light emitting control transistor T6；
The grid of described first light emitting control transistor T5 is connected with LED control signal input, and described
First pole of one light emitting control transistor T5 and described first power supply signal input V1, described first is luminous
The second pole controlling transistor T5 is connected with first pole of described driving transistor DTFT；
The grid of described second light emitting control transistor T6 is connected with described LED control signal input, institute
Second pole of the first pole and described driving transistor DTFT of stating the second light emitting control transistor T6 is connected,
Second pole of described second light emitting control transistor T6 is connected with the first end of described light-emitting element E L；
LED control signal EM is inputted by described LED control signal input.
In the embodiment of image element circuit as shown in Figure 7, T5 and T6 is p-type transistor, initially
The change stage, initialization control signal RST was low level, so that T5 and T6 turns on.But in reality
During operation, T5, T6 can also be replaced by n-type transistor, and now T5 and T6 is that grid accesses high electricity
Turn on during ordinary mail, at this, transistor types of T5 and T6 is not limited.
Preferably, on the basis of embodiment as shown in Figure 6, as shown in Figure 8, this utility model is implemented
Image element circuit described in example can also include the second storage electric capacity C2；The first of described second storage electric capacity C2
End is connected with the grid of described driving transistor DTFT, second end of described second storage electric capacity C2 and institute
State initialization voltage input to connect, so that at the beginning of being connected with this initialization voltage input on array base palte
Beginning pressure-wire can realize latticed layout, it is possible to achieve more stable driving.
Concrete, as it is shown in figure 9, described light-emitting component can be Organic Light Emitting Diode OLED, described
First end of light-emitting component is the anode of described Organic Light Emitting Diode OLED, described light emitting diode
Second end is the negative electrode of described Organic Light Emitting Diode OLED.
Below by a specific embodiment, image element circuit described in the utility model is described.
As shown in Figure 10, a specific embodiment of image element circuit described in the utility model includes organic light emission
Diode OLED, driving transistor DTFT, the first storage electric capacity C1, light emitting control module, initialization
Module, Data write. module and compensating module, wherein,
First end of described first storage electric capacity C1 is connected with the grid of described driving transistor DTFT, institute
The second end stating the first storage electric capacity C1 is connected with high level output end VDD；
Described Data write. module includes data writing transistor T1；
The grid of described data writing transistor T1 and the compensating control signal of input offset control signal GAT
Input connects, the of first pole of described data writing transistor T1 and described driving transistor DTFT
Two poles connect, and second pole of described data writing transistor T1 is electric with the data of write data voltage Vdata
Pressure write end connects；
Described compensating module includes compensating transistor T2；
The grid of described compensation transistor T2 and the compensating control signal inputting described compensating control signal GAT
Input connects, first pole of described compensation transistor T2 and first pole of described driving transistor DTFT
Connecting, second pole of described compensation transistor T2 is connected with the grid of described driving transistor DTFT；
Described first initialization module includes the first initialization transistor T3；
The grid of described first initialization transistor T3 is initial with the described initialization control signal RST's of input
Changing control signal input to connect, first pole of described first initialization transistor T3 is described with input initially
Change voltage Vinit initialization voltage input connect, second pole of described first initialization transistor T3 with
The anode of Organic Light Emitting Diode OLED connects；
Described second initialization module includes the second initialization transistor T4；
The grid of described second initialization transistor T4 and the initialization control of input initialization control signal RST
Signal input part processed connects, first pole of described second initialization transistor T4 and described driving transistor
The grid of DTFT connects, second pole of described second initialization transistor T4 and output initialization voltage Vinit
Initialization voltage input connect；And,
Described light emitting control module includes the first light emitting control transistor T5 and the second light emitting control transistor
T6；
The grid of described first light emitting control transistor T5 and the light emitting control inputting LED control signal EM
Signal input part connects, first pole of described first light emitting control transistor T5 and described high level output end
VDD connects, and second pole of described first light emitting control transistor T5 is with described driving transistor DTFT's
First pole connects；
Described second light emitting control transistor T6 grid and the luminous control inputting described LED control signal EM
Signal input part processed connects, described second light emitting control transistor T6 the first pole and described driving transistor
Second pole of DTFT connects, described second light emitting control transistor T6 the second pole and Organic Light Emitting Diode
The anode of OLED connects；
The negative electrode of Organic Light Emitting Diode OLED is connected with low level output end VSS.
As shown in figure 11, this specific embodiment of image element circuit described in the utility model operationally,
Initial phase t1, RST in each display cycle is low level, EM and GAT is high level,
As illustrated in fig. 12, T3 and T4 turns on, the grid of Vinit write DTFT and the anode of OLED；
Compensated stage t2, RST and EM in each display cycle is high level, and GAT is low level,
As shown in Figure 12 B, T1 and T2 turns on, second pole of Vdata write DTFT, first pole of DTFT
Being connected with the grid of DTFT, owing to the grid of DTFT has been written to Vinit at t1, therefore DTFT leads
Logical, the electric conduction of DTFT flows through the first pole being flowed to DTFT by second pole of DTFT, now DTFT
The source electrode of the first extremely DTFT, the drain electrode of the second of DTFT extremely DTFT, until the grid of DTFT
The current potential of pole is Vdata+Vth, and now the gate source voltage Vgs of DTFT is Vth；
In glow phase t3 of each display cycle, RSET and GAT is high level, and EM is low level,
As indicated in fig. 12 c, T5 and T6 turns on, and now the grid voltage of DTFT is Vdata+Vth, DTFT
Conducting, the conducting electric current of DTFT from top to bottom, the source electrode of the first of DTFT extremely DTFT, DTFT
The drain electrode of the second extremely DTFT, now the gate source voltage Vgs of DTFT is Vdata+Vth-VDD,
The gate source voltage Vth of DTFT can be compensated, therefore can solve OLED display panel brightness disproportionation even
The problem of brightness decay.
In Figure 12 A, Figure 12 B and Figure 12 C, the transistor that circle frame is lived represents and turns in this stage,
The transistor that oblique line passes represents in this stage for disconnecting.
Array base palte described in this utility model embodiment, including underlay substrate and be arranged at described underlay substrate
On multiple above-mentioned image element circuit.
Concrete, described array base palte also includes that the first power supply signal being arranged on described underlay substrate is defeated
Enter line；
Described first power supply signal input line is connected with the first power supply signal input；
Preferably, described first power supply signal input line spatially arranges in latticed (Mesh) and i.e. exists
All connect up on vertical and horizontal, so that the first power supply signal can realize the balance of voltage at vertical and horizontal,
So that the first of the first power supply signal input access being connected with multiple image element circuits of laterally arrangement
Power supply signal, and the first power supply signal input access being connected with multiple image element circuits of longitudinally arrangement
Big gap is there is not, it is possible to achieve more stable driving between first power supply signal.
When practical operation, described array base palte also includes scan line, the number being arranged on described underlay substrate
According to line, initialization voltage line, initialization control signal line and LED control signal line；
Described scan line is connected with compensating control signal input；
Described data wire is connected with data voltage write end；
Described initialization voltage line is connected with initialization voltage outfan；
Described initialization control signal line is connected with initialization control signal input；
Described LED control signal line is connected with LED control signal input.
Display floater described in this utility model embodiment includes above-mentioned array base palte.
Display device described in this utility model embodiment includes above-mentioned display floater.
The above is preferred implementation of the present utility model, it is noted that general for the art
For logical technical staff, on the premise of without departing from principle described in the utility model, it is also possible to make some changing
Entering and retouch, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (15)
1. an image element circuit, it is characterised in that include light-emitting component, drive transistor, the first storage
Electric capacity, light emitting control module, Data write. module and compensating module, wherein,
First end of described first storage electric capacity is connected with the grid of described driving transistor, described first storage
Second end of electric capacity and the first power supply signal input connect；
First pole of described driving transistor is defeated with described first power supply signal by described light emitting control module
Entering end to connect, the first pole of described driving transistor is also by described compensating module and described first storage electric capacity
First end connect；
Second pole of described driving transistor is by described light emitting control module and the first of described light-emitting component
End connects, and the second pole of described driving transistor writes end also by described Data write. module with data voltage
Connect；
Second end of described light-emitting component is connected with second source signal input part；
Described Data write. module is for controlling data voltage Vdata by described data voltage at compensated stage
Write end writes the second pole of described driving transistor；
Described compensating module for controlling the first pole of described driving transistor and described driving at compensated stage
The grid of transistor connects, to control described driving transistor turns and to control the conducting of described driving transistor
Electric current is flowed to the first pole of described driving transistor by the second pole of described driving transistor, until described driving
The current potential of the grid of transistor be Vdata+Vth, Vth be the threshold voltage of described driving transistor.
2. image element circuit as claimed in claim 1, it is characterised in that also include the first initialization module；
Described first initialization module, is connected with the first end of described light-emitting component, at initial phase
The first end controlling described light-emitting component is connected with initialization voltage input.
3. image element circuit as claimed in claim 2, it is characterised in that also include the second initialization module；
Described second initialization module, is connected with the grid of described driving transistor, at initial phase
The grid controlling described driving transistor is connected with initialization voltage outfan.
4. the image element circuit as described in any claim in claims 1 to 3, it is characterised in that institute
State light emitting control module for controlling the first pole of described driving transistor and described first electricity in glow phase
Source signal input connects, and controls the second pole of described driving transistor and the first end of described light-emitting component
Connect, thus control described driving transistor turns to drive described light-emitting component luminous.
5. image element circuit as claimed in claim 4, it is characterised in that described Data write. module includes
Data writing transistor；
The grid of described data writing transistor is connected with compensating control signal input, described data write crystalline substance
First pole of body pipe is connected with the second pole of described driving transistor, the second pole of described data writing transistor
It is connected with data voltage write end.
6. image element circuit as claimed in claim 4, it is characterised in that described compensating module includes compensating
Transistor；
The grid of described compensation transistor is connected with described compensating control signal input, described compensation transistor
The first pole be connected with the first pole of described driving transistor, the second pole of described compensation transistor is driven with described
The grid of dynamic transistor connects.
7. image element circuit as claimed in claim 3, it is characterised in that described first initialization module bag
Include the first initialization transistor；
The grid of described first initialization transistor is connected with initialization control signal input, at the beginning of described first
First pole of beginningization transistor is connected with described initialization voltage input, the described first initial initial crystalline
Second pole of pipe is connected with the first end of described light-emitting component；
Described second initialization module includes the second initialization transistor；
The grid of described second initialization transistor is connected with described initialization control signal input, and described
First pole of two initialization transistors is connected with the grid of described driving transistor, described second initial crystalline
Second pole of pipe is connected with described initialization voltage input.
8. image element circuit as claimed in claim 7, it is characterised in that described light emitting control module includes
First light emitting control transistor and the second light emitting control transistor, wherein,
The grid of described first light emitting control transistor is connected with LED control signal input, described first
First pole of photocontrol transistor is connected with described first power supply signal input, and described first light emitting control is brilliant
Second pole of body pipe is connected with the first pole of described driving transistor；
The grid of described second light emitting control transistor is connected with described LED control signal input, and described
First pole of two light emitting control transistors is connected with the second pole of described driving transistor, the described second luminous control
Second pole of transistor processed is connected with the first end of described light-emitting component.
9. image element circuit as claimed in claim 7, it is characterised in that also include the second storage electric capacity；
First end of described second storage electric capacity is connected with the grid of described driving transistor, described second storage
Second end of electric capacity is connected with described initialization voltage input.
10. the image element circuit as described in any claim in claims 1 to 3, it is characterised in that institute
Stating light-emitting component is Organic Light Emitting Diode, and the first end of described light-emitting component is described Organic Light Emitting Diode
Anode, the negative electrode that the second end is described Organic Light Emitting Diode of described light emitting diode.
11. 1 kinds of array base paltes, including underlay substrate, it is characterised in that also include being arranged at described substrate
Multiple image element circuits as described in any claim in claim 1 to 10 on substrate.
12. array base paltes as claimed in claim 11, it is characterised in that also include being arranged at described lining
The first power supply signal input line on substrate；
Described first power supply signal input line is connected with the first power supply signal input；Described first power supply signal
Input line is spatially in latticed setting.
13. array base paltes as described in claim 11 or 12, it is characterised in that also include being arranged at institute
State the scan line on underlay substrate, data wire, initialization voltage line, initialization control signal line and luminous control
Holding wire processed；
Described scan line is connected with compensating control signal input；
Described data wire is connected with data voltage write end；
Described initialization voltage line is connected with initialization voltage input；
Described initialization control signal line is connected with initialization control signal input；
Described LED control signal line is connected with LED control signal input.
14. 1 kinds of display floaters, it is characterised in that include that right arbitrary in claim 11 to 13 such as is wanted
Seek described array base palte.
15. 1 kinds of display devices, it is characterised in that include display floater as claimed in claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620279754.XU CN205541822U (en) | 2016-04-06 | 2016-04-06 | Pixel circuit , array substrate , display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620279754.XU CN205541822U (en) | 2016-04-06 | 2016-04-06 | Pixel circuit , array substrate , display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205541822U true CN205541822U (en) | 2016-08-31 |
Family
ID=57141676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620279754.XU Active CN205541822U (en) | 2016-04-06 | 2016-04-06 | Pixel circuit , array substrate , display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205541822U (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679236A (en) * | 2016-04-06 | 2016-06-15 | 京东方科技集团股份有限公司 | Pixel circuit and driving method thereof, array substrate, display panel and display device |
| CN106448560A (en) * | 2016-12-21 | 2017-02-22 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and driving method thereof, and organic light emitting display device |
| CN106782330A (en) * | 2016-12-20 | 2017-05-31 | 上海天马有机发光显示技术有限公司 | Organic light emissive pixels drive circuit, driving method and organic electroluminescence display panel |
| CN106952618A (en) * | 2017-05-26 | 2017-07-14 | 京东方科技集团股份有限公司 | Display device and image element circuit and its control method |
| CN107680533A (en) * | 2016-11-18 | 2018-02-09 | 京东方科技集团股份有限公司 | Image element circuit, display panel, display device and driving method |
| WO2018210051A1 (en) * | 2017-05-18 | 2018-11-22 | 京东方科技集团股份有限公司 | Pixel driving circuit, pixel driving method and display device |
| CN109192141A (en) * | 2018-10-30 | 2019-01-11 | 京东方科技集团股份有限公司 | Display panel and its detection method, display device |
| WO2019014935A1 (en) * | 2017-07-21 | 2019-01-24 | Huawei Technologies Co., Ltd. | Advanced pixel circuit for display |
| WO2019052394A1 (en) * | 2017-09-18 | 2019-03-21 | 京东方科技集团股份有限公司 | Pixel circuit and driving method therefor, and display apparatus |
| CN109870470A (en) * | 2017-06-30 | 2019-06-11 | 京东方科技集团股份有限公司 | Detected pixel circuit, ray detection panel and photoelectric detection system |
| CN110097851A (en) * | 2018-01-30 | 2019-08-06 | 三星显示有限公司 | Pixel and organic light-emitting display device including pixel |
| CN111292685A (en) * | 2018-12-06 | 2020-06-16 | 乐金显示有限公司 | Pixel circuit, organic light emitting display device and driving method thereof |
| CN111445863A (en) * | 2020-05-14 | 2020-07-24 | 京东方科技集团股份有限公司 | Pixel driving circuit, driving method thereof and display device |
| CN111754920A (en) * | 2020-07-17 | 2020-10-09 | 武汉华星光电半导体显示技术有限公司 | Pixel driving circuit, driving method thereof and display panel |
| CN112885291A (en) * | 2021-01-15 | 2021-06-01 | 合肥维信诺科技有限公司 | Pixel circuit, driving method thereof and display panel |
| CN112908245A (en) * | 2021-02-24 | 2021-06-04 | 昆山国显光电有限公司 | Pixel circuit, driving method thereof and display panel |
| CN112951159A (en) * | 2021-02-20 | 2021-06-11 | 京东方科技集团股份有限公司 | Pixel circuit, pixel driving method, display substrate and display device |
| WO2022246593A1 (en) * | 2021-05-24 | 2022-12-01 | 京东方科技集团股份有限公司 | Pixel circuit and driving method therefor, and display device |
| CN116312361A (en) * | 2023-02-27 | 2023-06-23 | 惠科股份有限公司 | Display driving circuit, display driving method and display panel |
| WO2023226013A1 (en) * | 2022-05-27 | 2023-11-30 | 京东方科技集团股份有限公司 | Pixel circuit and driving method therefor, and display substrate and display apparatus |
-
2016
- 2016-04-06 CN CN201620279754.XU patent/CN205541822U/en active Active
Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679236A (en) * | 2016-04-06 | 2016-06-15 | 京东方科技集团股份有限公司 | Pixel circuit and driving method thereof, array substrate, display panel and display device |
| CN107680533A (en) * | 2016-11-18 | 2018-02-09 | 京东方科技集团股份有限公司 | Image element circuit, display panel, display device and driving method |
| CN107680533B (en) * | 2016-11-18 | 2023-02-03 | 京东方科技集团股份有限公司 | Pixel circuit, display panel, display device and driving method |
| CN106782330A (en) * | 2016-12-20 | 2017-05-31 | 上海天马有机发光显示技术有限公司 | Organic light emissive pixels drive circuit, driving method and organic electroluminescence display panel |
| US10347180B2 (en) | 2016-12-20 | 2019-07-09 | Shanghai Tianma AM-OLED Co., Ltd. | Organic light-emitting pixel driving circuit, driving method thereof, and organic light-emitting display panel |
| CN106782330B (en) * | 2016-12-20 | 2019-03-12 | 上海天马有机发光显示技术有限公司 | Organic light emissive pixels driving circuit, driving method and organic light emitting display panel |
| CN106448560A (en) * | 2016-12-21 | 2017-02-22 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and driving method thereof, and organic light emitting display device |
| US10297202B2 (en) | 2016-12-21 | 2019-05-21 | Shanghai Tianma AM-OLED Co., Ltd. | Organic light-emitting display panel, driving method thereof, and organic light-emitting display device |
| US10909920B2 (en) | 2017-05-18 | 2021-02-02 | Boe Technology Group Co., Ltd. | Pixel driving circuit, pixel driving method, and display device |
| WO2018210051A1 (en) * | 2017-05-18 | 2018-11-22 | 京东方科技集团股份有限公司 | Pixel driving circuit, pixel driving method and display device |
| CN106952618A (en) * | 2017-05-26 | 2017-07-14 | 京东方科技集团股份有限公司 | Display device and image element circuit and its control method |
| US11127342B2 (en) | 2017-05-26 | 2021-09-21 | Boe Technology Group Co., Ltd. | Pixel circuit for driving light emitting diode to emit light and method of controlling the pixel circuit |
| WO2018214533A1 (en) * | 2017-05-26 | 2018-11-29 | 京东方科技集团股份有限公司 | Display device and pixel circuit, and method for controlling same |
| CN109870470A (en) * | 2017-06-30 | 2019-06-11 | 京东方科技集团股份有限公司 | Detected pixel circuit, ray detection panel and photoelectric detection system |
| CN110892473A (en) * | 2017-07-21 | 2020-03-17 | 华为技术有限公司 | Advanced pixel circuit for display screen |
| WO2019014935A1 (en) * | 2017-07-21 | 2019-01-24 | Huawei Technologies Co., Ltd. | Advanced pixel circuit for display |
| CN109523956A (en) * | 2017-09-18 | 2019-03-26 | 京东方科技集团股份有限公司 | Pixel circuit and its driving method, display device |
| WO2019052394A1 (en) * | 2017-09-18 | 2019-03-21 | 京东方科技集团股份有限公司 | Pixel circuit and driving method therefor, and display apparatus |
| US10991303B2 (en) | 2017-09-18 | 2021-04-27 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Pixel circuit and driving method thereof, display device |
| CN110097851A (en) * | 2018-01-30 | 2019-08-06 | 三星显示有限公司 | Pixel and organic light-emitting display device including pixel |
| US11024229B2 (en) | 2018-10-30 | 2021-06-01 | Beijing Boe Display Technology Co., Ltd. | Display panel and detection method thereof, and display device |
| CN109192141A (en) * | 2018-10-30 | 2019-01-11 | 京东方科技集团股份有限公司 | Display panel and its detection method, display device |
| CN111292685A (en) * | 2018-12-06 | 2020-06-16 | 乐金显示有限公司 | Pixel circuit, organic light emitting display device and driving method thereof |
| CN111445863A (en) * | 2020-05-14 | 2020-07-24 | 京东方科技集团股份有限公司 | Pixel driving circuit, driving method thereof and display device |
| US11804180B2 (en) | 2020-05-14 | 2023-10-31 | Boe Technology Group Co., Ltd. | Pixel driving circuit, method for driving the same and display device |
| CN111754920A (en) * | 2020-07-17 | 2020-10-09 | 武汉华星光电半导体显示技术有限公司 | Pixel driving circuit, driving method thereof and display panel |
| CN112885291A (en) * | 2021-01-15 | 2021-06-01 | 合肥维信诺科技有限公司 | Pixel circuit, driving method thereof and display panel |
| WO2022174626A1 (en) * | 2021-02-20 | 2022-08-25 | 京东方科技集团股份有限公司 | Pixel circuit, pixel driving method, display substrate, and display device |
| CN112951159A (en) * | 2021-02-20 | 2021-06-11 | 京东方科技集团股份有限公司 | Pixel circuit, pixel driving method, display substrate and display device |
| CN112908245A (en) * | 2021-02-24 | 2021-06-04 | 昆山国显光电有限公司 | Pixel circuit, driving method thereof and display panel |
| WO2022246593A1 (en) * | 2021-05-24 | 2022-12-01 | 京东方科技集团股份有限公司 | Pixel circuit and driving method therefor, and display device |
| GB2615665A (en) * | 2021-05-24 | 2023-08-16 | Boe Technology Group Co Ltd | Pixel circuit and driving method therefor, and display device |
| WO2023226013A1 (en) * | 2022-05-27 | 2023-11-30 | 京东方科技集团股份有限公司 | Pixel circuit and driving method therefor, and display substrate and display apparatus |
| CN116312361A (en) * | 2023-02-27 | 2023-06-23 | 惠科股份有限公司 | Display driving circuit, display driving method and display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205541822U (en) | Pixel circuit , array substrate , display panel and display device | |
| CN105679236B (en) | Pixel circuit and its driving method, array substrate, display panel and display device | |
| CN113838421B (en) | Pixel circuit, driving method thereof and display panel | |
| CN107068060B (en) | AMOLED pixel-driving circuit and image element driving method | |
| CN105609050B (en) | pixel compensation circuit and AMOLED display device | |
| CN105427805B (en) | Pixel-driving circuit, method, display panel and display device | |
| CN105427803B (en) | Pixel-driving circuit, method, display panel and display device | |
| CN105679244B (en) | AMOLED pixel-driving circuits and image element driving method | |
| CN104680980B (en) | Pixel driving circuit, driving method thereof and display device | |
| CN104036724B (en) | Image element circuit, the driving method of image element circuit and display device | |
| CN106991964A (en) | Image element circuit and its driving method, display device | |
| CN106652903A (en) | OLED pixel circuit, driving method of OLED pixel circuit and display device | |
| CN105139805B (en) | A kind of pixel-driving circuit and its driving method, display device | |
| CN107301845A (en) | Pixel-driving circuit and its driving method | |
| CN108682392A (en) | Pixel circuit and its driving method, display panel, production method and display device | |
| CN107393477B (en) | Top emitting AMOLED pixel circuit and its driving method | |
| CN106067291A (en) | A kind of pixel-driving circuit and driving method, display device | |
| CN102646386A (en) | Pixel unit circuit, pixel array, panel and panel driving method | |
| CN105702211B (en) | The driving method of image element circuit and image element circuit, display device | |
| CN109300436A (en) | AMOLED pixel-driving circuit and driving method | |
| CN103198797B (en) | Driving method and pixel units of active matrix organic light emitting diode panel | |
| CN103714778A (en) | Pixel circuit, pixel circuit driving method and display device | |
| CN107369412B (en) | Pixel circuit, driving method thereof and display device | |
| CN109166528A (en) | Pixel circuit and its driving method | |
| CN105405404B (en) | Pixel circuit and its driving method, OLED display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |