CN104751775B - Image element circuit and driving method and display circuit with compensation function - Google Patents

Image element circuit and driving method and display circuit with compensation function Download PDF

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Publication number
CN104751775B
CN104751775B CN201310737429.4A CN201310737429A CN104751775B CN 104751775 B CN104751775 B CN 104751775B CN 201310737429 A CN201310737429 A CN 201310737429A CN 104751775 B CN104751775 B CN 104751775B
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transistor
electrode
connected
image element
element circuit
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CN201310737429.4A
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CN104751775A (en
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朱晖
胡思明
杨楠
张婷婷
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昆山工研院新型平板显示技术中心有限公司
昆山国显光电有限公司
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Abstract

A kind of image element circuit and driving method and display circuit with compensation function of the present invention, the only third transistor T3 leakage current being connected in the image element circuit with the Section Point N2, voltage in dark-state due to leakage current Section Point N2 is raised, it is used as the second transistor T7 of driving transistor current reduction, weaken glimmer point problem, raising is displayed contrast.

Description

Image element circuit and driving method and display circuit with compensation function

Technical field

The present invention relates to image element circuit and its application, specifically a kind of image element circuit with compensation function and driving side Method and display circuit.

Background technology

In recent years, lightweight and small volume various types of FPD compared to for cathode-ray tube have been developed Device.In various types of panel display apparatus, because active array organic light emitting display device is using self luminous organic Light emitting diode(OELD)Carry out display image, generally have the response time short, be driven using low-power consumption, it is relatively preferably bright The characteristic of degree and colour purity, so organic light-emitting display device has become the focus of display device of future generation.

For large-scale active array organic light emitting display device, including positioned at many of the intersection region of scan line and data wire Individual pixel.Each pixel includes Organic Light Emitting Diode and the image element circuit for driving the Organic Light Emitting Diode.Pixel Circuit generally includes switching transistor, driving transistor and storage.The pixel of active matrix organic light-emitting diode Characteristic is driven the influence of the unfavorable factor of the leakage current of the difference and switching transistor between transistor, therefore by so The quality uniformity of image that shows of multiple pixels and uniformity it is poor.

Fig. 1 is the circuit diagram of the conventional pixel of active array organic light emitting display device.In Fig. 1, what image element circuit included Transistor is PMOS transistor.Referring to Fig. 1, the conventional pixel of active matrix organic light-emitting diode display device includes organic hair Optical diode OLED, is already attached to data wire VDATAm and scan control line scan, emi control organic light emitting diode OLED Image element circuit.The first transistor T31 grid is connected to electric capacity C31 one end, and the first transistor T31 drain electrode and the Six transistor T36 source class is connected.Second transistor T32 grid is connected to third transistor T33 grid, and with scanning Signal scan [n] is connected.Second transistor T32 source electrode is connected to data-signal VDATAm ends.Second transistor T32 drain electrode It is connected to the first transistor T31 source class.Third transistor T33 grid is connected to second transistor T32 grid, and with Scanning signal scan [n] is connected.Third transistor T33 source class(Or drain electrode)It is connected to the first transistor T31 grid.3rd Transistor T33 drain electrode(Or source class)It is connected to the first transistor T31 drain electrode.4th transistor T34 grid, which is connected to, to be swept Retouch control line scan [n-1].4th transistor T34 source electrode(Or drain electrode)It is connected to power supply signal Vinit ends, the 4th transistor T34 drain electrode(Or source electrode)It is connected to the first transistor T31 grid.When scan control line scan [n-1] is to the 4th transistor When T34 provides low level scanning signal, the 4th transistor T34 conductings, this node of Vinit voltage signals write-in N2, by electric capacity The previous frame signal that C31 is stored is initialized.5th transistor T35 grid is connected to the 6th transistor T36 grid, And it is connected with scanning signal emi [n].5th transistor T35 source class is connected to power supply vdd terminal, and with the one of electric capacity C31 End is connected.5th transistor T35 drain electrode is connected to second transistor T32 drain electrode, and with the first transistor T31 source class It is connected.6th transistor T36 grid is connected to the 5th transistor T35 grid, and the 6th transistor T36 drain electrode is connected to OLED anode.When scan control line scan [n] to second transistor T32, third transistor T33 provide low level scanning signal When, VDATAm signals are stored in by second transistor T32, third transistor T33 conducting, the first transistor T31 diode current flows Electric capacity C31 ends, the first transistor T31 diodes connection, so can compensate for the skew of its threshold voltage.Work as scan control When line emi [n] is low level, the 5th transistor T35, the first transistor T31, the 6th transistor T36 conductings, OLED start hair Light.Transistor has leakage current presence in the state of shut-off, and traditional image element circuit is in dark-state as shown in the figure, Section Point There are two leakage current branch roads in N2, as shown by arrows, a source electrode by the 4th transistor T34 is spilt, and another passes through the Three transistor T33 source electrode is spilt.Due to leakage current during dark-state, the reduction of Section Point N2 voltages, driving transistor T31 electric current liters Height, the brightness of screen body can increase during dark-state, that is, aggravate glimmer point problem.Shield body in dark-state, if leakage current is serious, it will Glimmer point is aggravated, reduction screen body contrast has a strong impact on screen body display effect.

The content of the invention

Therefore, to be solved by this invention is that the screen body brightness that existing image element circuit is caused due to leakage current in dark-state increases Plus technical problem there is provided a kind of image element circuit with compensation function and driving method and display circuit.

In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

A kind of image element circuit with compensation function, including:

5th transistor T5, the 5th transistor T5 include control pole, first electrode and second electrode, and the described 5th is brilliant Body pipe T5 first electrode is connected with the first power supply, and the second electrode of the 5th transistor T5 constitutes first node N1;

First electric capacity C1, one end of the first electric capacity C1 is connected with the first power supply, the other end of the first electric capacity C1 Constitute Section Point N2;

The first transistor T1, the first transistor T1 include control pole, first electrode and second electrode, and described first is brilliant Body pipe T1 first electrode is connected with the first node N1;The second electrode of the first transistor T1 is directly or indirectly with Three power supplys are connected;The control pole of the first transistor T1 is connected with the third line scan control line that the image element circuit is expert at;

Second transistor T2, the second transistor T2 include control pole, first electrode and second electrode, and described second is brilliant Body pipe T2 first electrode is connected with first node N1;The control pole of the second transistor T2 and the Section Point N2 phases Even;

Third transistor T3, the third transistor T3 include control pole, first electrode and second electrode, and the described 3rd is brilliant Body pipe T3 first electrode is directly or indirectly connected with the Section Point N2;The second electrode of the third transistor T3 and institute First node N1 is stated to be connected;The second row scan control line that the control pole of the third transistor T3 is expert at the image element circuit It is connected;

4th transistor T4, the 4th transistor T4 include control pole, first electrode and second electrode, and the described 4th is brilliant Body pipe T4 control pole is connected with the fourth line scan control line that the image element circuit is expert at;The first of the 4th transistor T4 Electrode is connected with data wire;The second electrode of the 4th transistor T4 is connected with the second electrode of the second transistor T2;

6th transistor T6, the 6th transistor T6 include control pole, first electrode and second electrode, and the described 6th is brilliant Body pipe T6 first electrode is connected with the second electrode of the second transistor T2, and the control pole of the 6th transistor T6 is with being somebody's turn to do The first row scan control line that image element circuit is expert at is connected;The second electrode of the 6th transistor T6 constitutes straight for connecting Flow the output end of electroluminescent device.

A kind of described image element circuit with compensation function, in addition to the 7th transistor T7, the 7th transistor T7 Including control pole, first electrode and second electrode, wherein, the first electrode of the 7th transistor T7 is with the first transistor T1's Second electrode is connected, and the second electrode of the 7th transistor T7 is connected with the 3rd power supply;The control of the 7th transistor T7 Pole is connected with the third line scan control line that the image element circuit is expert at.

A kind of described image element circuit with compensation function, in addition to the 8th transistor T8, the 8th transistor T8 Including control pole, first electrode and second electrode, wherein, first electrode and the Section Point N2 phases of the 8th transistor T8 Even;The second electrode of the 8th transistor T8 is connected with the first electrode of the third transistor;The 8th transistor T8 Control pole be connected with the second row scan control line that the image element circuit is expert at.

A kind of described image element circuit with compensation function, in addition to dc electroluminescence device, the direct current are electroluminescent The positive pole of luminescent device is connected with the output end, and the negative pole of the dc electroluminescence device is connected with second source.

The driving method of the described image element circuit with compensation function, when the scan period of every row pixel is divided into first Between section t1, second time period t2 and the 3rd time period t 3, wherein,

First time period t1, the third line scan control signal and the second row scan control signal are low level, first crystal Pipe T1 and third transistor T3 is turned on by low level the third line scan control signal and the second row scan control signal, the The voltage of three power supplys is provided to Section Point N2;

Second time period t2, the second row scan control signal and fourth line scan control signal are low level, the 3rd crystal Pipe T3 and the 4th transistor T4 responds low level second row scan control signal and fourth line scan control signal and turned on, and leads to The second transistor T2 for crossing third transistor T3 and being connected by diode is turned on;

3rd time period t 3, the first row scan control signal transits to low level, the 5th transistor T5 and the 6th transistor T6 is turned on by the first row scan control signal, and the driving current that the first power supply is provided is along through the 5th transistor T5, the second crystalline substance The path of body pipe T2, the 6th transistor T6 and organic electroluminescence device flows to second source.

A kind of display circuit with compensation function, including some any of the above-described described image element circuits.

The above-mentioned technical proposal of the present invention has advantages below compared with prior art:

A kind of image element circuit with compensation function of the present invention, the only the 3rd be connected with the Section Point N2 A transistor T3 leakage current, the voltage in dark-state due to leakage current Section Point N2 is raised, and is used as driving transistor Second transistor T7 current reduction, weakens glimmer point problem, and raising is displayed contrast.

A kind of image element circuit with compensation function of the present invention, by increasing the 7th transistor T7 and the 8th crystal Pipe T8, the first transistor T1 and third transistor T3 are used as double-grid structure, second section is reduce further Point N2 leakage current, further weakens glimmer point problem and improves displaying contrast.

Brief description of the drawings

In order that present disclosure is more likely to be clearly understood, specific embodiment and combination below according to the present invention Accompanying drawing, the present invention is further detailed explanation, wherein

Fig. 1 is the circuit diagram of the conventional pixel of active array organic light emitting display device;

Fig. 2 is the schematic block diagram of the active array organic light emitting display device of one embodiment of the invention;

Fig. 3 is a kind of structural representation of image element circuit of one embodiment of the invention;

Fig. 4 is a kind of structural representation of image element circuit of another embodiment of the present invention;

Fig. 5 is a kind of structural representation of image element circuit of third embodiment of the invention;

Fig. 6 is a kind of structural representation of image element circuit of four embodiment of the invention;

Fig. 7 is the control signal timing diagram in image element circuit shown in Fig. 3 to Fig. 6.

Embodiment

Referring to Fig. 2, the active array organic light emitting display device of one embodiment of the invention, it includes:Display unit 112nd, scanner driver and data driver.Wherein, the display unit 112 further comprises multiple image element circuits 110, described Multiple image element circuits 110 arrange scan control line Sn1, Sn2, Sn3 and the Sn4 and data wire D1 to Dm that be expert in the matrix form Intersection region.

Each image element circuit 110 is connected to the row scan control line of line n(For example, Sn1, Sn2, Sn3 and Sn4)Sum According to line(The data wire is connected to the row image element circuit 110 where image element circuit 110 itself).For example, will be located at the i-th row and The image element circuit 110 of jth row is connected to the data wire Dj of i-th line scans control line Si1, Si2, Si3 and Si4 and jth row.

Each image element circuit 110 is initialised during scan control line provides the first time period of scan control signal, And the second time period for the scan control signal that image element circuit 110 is provided in scan control line receives the number provided from data wire It is believed that number.Image element circuit 110 by transmitting there is brightness light corresponding with data-signal to show figure during the 3rd period Picture, during the 3rd period, suitable level is transitted to after the scan control signal that scan control line is provided, from And provide electric current to the Organic Light Emitting Diode set in each image element circuit 110.

Meanwhile, display unit 112 is received from outside(For example, from power supply)There is provided from the first power supply ELVDD, second source ELVSS and the 3rd power supply ELVL.First power supply ELVDD and second source ELVSS are used separately as high level voltage source and low level Voltage source.First power supply ELVDD and second source ELVSS is used as the driving power supply of image element circuit 110.3rd power supply ELVL is used for The change for the voltage that compensation third transistor T3 grids are caused due to leakage current.

Scanner driver results from outside offer(For example, being provided from timing control unit)Scan control signal it is corresponding Scan control signal.By the scan control signal produced by scanner driver respectively by scan control line Si1 to Sin sequentially It is supplied to image element circuit 110.

Data driver is produced and outside offer(For example, being provided from timing control unit)Data and data controlling signal Corresponding data-signal.The data-signal produced by data driver is synchronously carried by data wire D1 to Dm with scanning signal Supply image element circuit 110.

Embodiment 1

It is shown in Figure 3, it is a kind of structural representation of image element circuit with compensation function of one embodiment of the invention Figure, for the ease of showing, Fig. 3 is only shown at exemplified by the image element circuit 110 of line n and m row, and dotted portion is shown in figure The image element circuit with compensation function in the image element circuit 110 in addition to luminescent device.

A kind of image element circuit with compensation function, including:

5th transistor T5, the 5th transistor T5 include control pole, first electrode and second electrode, and the described 5th is brilliant Body pipe T5 first electrode is connected with the first power supply ELVDD, and the second electrode of the 5th transistor T5 constitutes first node N1.

First electric capacity C1, one end of the first electric capacity C1 is connected with the first power supply ELVDD, and the first electric capacity C1's is another One end constitutes Section Point N2.

The first transistor T1, the first transistor T1 include control pole, first electrode and second electrode, and described first is brilliant Body pipe T1 first electrode is connected with the first node N1;The second electrode of the first transistor T1 and the 3rd power supply ELVL It is connected;The control pole of the first transistor T1 is connected with the i.e. Sn3 of the third line scan control line that the image element circuit is expert at.

Second transistor T2, the second transistor T2 include control pole, first electrode and second electrode, and described second is brilliant Body pipe T2 first electrode is connected with first node N1;The control pole of the second transistor T2 and the Section Point N2 phases Even.

Third transistor T3, the third transistor T3 include control pole, first electrode and second electrode, and the described 3rd is brilliant Body pipe T3 first electrode is connected with the Section Point N2;The second electrode of the third transistor T3 and the first node N1 is connected;The control pole of the third transistor T3 is connected with the second i.e. Sn2 of row scan control line that the image element circuit is expert at.

4th transistor T4, the 4th transistor T4 include control pole, first electrode and second electrode, and the described 4th is brilliant Body pipe T4 control pole is connected with the i.e. Sn4 of fourth line scan control line that the image element circuit is expert at;The 4th transistor T4 First electrode be connected with data wire;The second electrode of the 4th transistor T4 and the second electrode of the second transistor T2 It is connected.

6th transistor T6, the 6th transistor T6 include control pole, first electrode and second electrode, and the described 6th is brilliant Body pipe T6 first electrode is connected with the second electrode of the second transistor T2, and the control pole of the 6th transistor T6 is with being somebody's turn to do The i.e. Sn1 of the first row scan control line that image element circuit is expert at is connected;The second electrode of the 6th transistor T6, which is constituted, to be used for Connect the output end of dc electroluminescence device.

As other embodiment, in addition to dc electroluminescence device, the positive pole of the organic electroluminescence device and institute State output end to be connected, the negative pole of the dc electroluminescence device is connected with second source ELVSS.Direct current described in the present embodiment Electroluminescent device is by taking OLED as an example.

Timing diagram with reference to shown in Fig. 7, to a kind of image element circuit with compensation function of one embodiment of the present of invention Driving method be discussed below:

The scan period of every row pixel is divided into first time period t1, second time period t2 and the 3rd time in the present embodiment Section t3, wherein,

First time period t1, the third line scan control signal and the second row scan control signal are low level, first crystal Pipe T1 and third transistor T3 is turned on by low level the third line scan control signal and the second row scan control signal, the Three power supply ELVL voltage is provided to Section Point N2;

Second time period t2, the second row scan control signal and fourth line scan control signal are low level, the 3rd crystal Pipe T3 and the 4th transistor T4 responds low level second row scan control signal and fourth line scan control signal and turned on, and leads to The second transistor T2 for crossing third transistor T3 and being connected by diode is turned on;

3rd time period t 3, the first row scan control signal transits to low level, the 5th transistor T5 and the 6th transistor T6 is turned on by the first row scan control signal, and the driving current that the first power supply ELVDD is provided is along through the 5th transistor T5, the Two-transistor T2, the 6th transistor T6 and organic electroluminescence device path flow to second source ELVSS.

That is the first transistor T1, during scan control signal is supplied to the scan control line Sn3 periods, described first is brilliant Body pipe T1 turns on the 3rd supply voltage ELVSS and first node N1;Third transistor T3, is supplied in scan control signal and sweeps During retouching the control line Sn2 periods, the third transistor T3 by the 3rd supply voltage ELVSS by first node N1 there is provided Give Section Point N2;Image element circuit 112, is connected between the first power supply ELVDD and Organic Light Emitting Diode OLED, for having Machine light emitting diode OLED provides driving current.

During the period that scan control signal is supplied into scan control line Sn3, the first transistor T1 conductings, so that 3rd power supply ELVL voltage is supplied to first node N1.Third transistor T3, is supplied to scanning to control in scan control signal During the line Sn2 periods processed, by first node N1, there is provided to by the 3rd supply voltage ELVSS by the third transistor T3 Two node N2.

That is, the first transistor T1 is during the initialization time section of image element circuit 110, by third transistor T3, to the Two node N2 provide constant voltage ELVSS.

Second transistor T2 is connected between first node N1 and the 6th transistor T6, second transistor T2 grid connection To Section Point N2.Second transistor T2 controls are from corresponding with the data-signal that second transistor T2 is provided in image element circuit The amplitude of Organic Light Emitting Diode OLED driving current is flowed to during 110 fluorescent lifetime section.

Third transistor T3 is connected between Section Point N2 and first node N1, and third transistor T3 grid is connected to Scan control line Sn2.During the period that scan control signal is supplied into scan control line Sn2, third transistor T3 is led It is logical, so that by second transistor T2 source electrode and Section Point N2 connections.

4th transistor T4 is connected between data wire Dm and second transistor T2 drain electrode, the 4th transistor T4 grid It is connected to scan control line Sn4.Scan control signal is being supplied to scan control line Sn4 period, the 4th transistor T4 Conducting, so that Section Point N2 will be supplied to from the data wire Dm data-signals provided.

5th transistor T5 is connected between the first power supply ELVDD and first node N1, and the 5th transistor T5 grid connects It is connected to scan control line Sn1.When the scan control signal provided from scan control line transits to low level, the 5th transistor T5 Conducting, then second transistor T2 source electrode is connected to the first power supply ELVDD.

6th transistor T6 is connected between second transistor T2 and Organic Light Emitting Diode OLED.6th transistor T6's Grid connection scan control line Sn1.High level scan control signal is being supplied to scan control line Sn1 period, the 6th Transistor T6 ends, so as to prevent driving current to be provided to Organic Light Emitting Diode OLED.In scan control signal transition During low level fluorescent lifetime section, the 6th transistor T6 conductings, so that second transistor is connected to organic light-emitting diodes Pipe OLED, second transistor T2 is supplied to Organic Light Emitting Diode driving current.

First capacitor C1 is connected between Section Point N2 and the first power supply ELVDD.There is provided by scan control signal During to scan control line Sn3 and the Sn2 period, the 3rd supply voltage is provided by third transistor T3 and the first transistor T1 ELVSS initializes the first capacitor C1.Thereafter, scan control signal is being supplied to scan control line Sn2 and the Sn4 period Period, will be with the corresponding voltage of data-signal by the 4th transistor T4, second transistor T2 and third transistor T3 offer It is stored in the first capacitor C1.

Organic Light Emitting Diode OLED is connected between image element circuit 112 and second source ELVSS.In image element circuit 110 Fluorescent lifetime section during, Organic Light Emitting Diode OLED will launch and the first power supply ELVDD of process, the 5th transistor T5, the The corresponding light of driving current that two-transistor T2 and the 6th transistor T6 is provided.

In image element circuit 110, Section Point N2 is due to there was only third transistor T3 leakage current(Referring to arrow in figure Shown in head), due to leakage current during dark-state, the rise of Section Point N2 voltages is used as the second transistor T7 of driving transistor electricity Stream reduction, weakens glimmer point problem, improves contrast.

A kind of image element circuit with compensation function of the present embodiment, only the be connected in the Section Point N2 A three transistor T3 leakage current, the voltage in dark-state due to leakage current Section Point N2 is raised, and is used as driving transistor Second transistor T7 current reduction, weaken glimmer point problem, raising displays contrast.

Embodiment 2

It is shown in Figure 4, it is used as second embodiment of the present invention, on the basis of above-described embodiment 1, the present embodiment Image element circuit with compensation function also includes the 7th transistor T7, and the 7th transistor T7 includes control pole, first electrode And second electrode, wherein, the first electrode of the 7th transistor T7 is connected with the first transistor T1 second electrode, and described Seven transistor T7 second electrode is connected with the 3rd power supply ELVL, i.e., described the first transistor T1 second electrode passes through described Seven transistors are connected with the 3rd power supply indirectly;The third line that the control pole of the 7th transistor T7 is expert at the image element circuit Scan control line is connected.

A kind of image element circuit with compensation function in the present embodiment, adds the 7th transistor T7, passes through increase by the Seven transistor T7 the first transistor T1 as double-gate structure to use, and can further reduce Section Point N2 leakage currents, Further weaken glimmer point, improve contrast.

Embodiment three

It is shown in Figure 5, it is used as the 3rd embodiment of the present invention, on the basis of above-described embodiment 1, the present embodiment Image element circuit with compensation function also includes the 8th transistor T8, and the 8th transistor T8 includes control pole, first electrode And second electrode, wherein, the first electrode of the 8th transistor T8 is connected with Section Point N2;The 8th transistor T8's Second electrode is connected with the first electrode of the third transistor, i.e., described third transistor T3 first electrode passes through described Eight transistor T8 are connected with the Section Point N2 indirectly;The control pole of the 8th transistor T8 is expert at the image element circuit The second row scan control line be connected.

A kind of image element circuit with compensation function in the present embodiment, adds the 8th transistor T8, passes through increase by the Eight transistor T8 third transistor T3 as double-gate structure to use, and can further reduce Section Point N2 leakage currents, Further weaken glimmer point, improve contrast.

Example IV

It is shown in Figure 6, it is used as the other embodiment of the present invention, on the basis of above-described embodiment 2, the band of the present embodiment There is the image element circuit of compensation function also to include the 8th transistor T8, the 8th transistor T8 include control pole, first electrode and Second electrode, wherein, the first electrode of the 8th transistor T8 is connected with Section Point N2;The of the 8th transistor T8 Two electrodes are connected with the first electrode of the third transistor;The control pole of the 8th transistor T8 and image element circuit place The second capable row scan control line is connected.

A kind of image element circuit with compensation function of the present invention, by increasing the 7th transistor T7 and the 8th crystal Pipe T8, the first transistor T1 and third transistor T3 are used as double-grid structure, second section is reduce further Point N2 leakage current, further weakens glimmer point problem and improves displaying contrast.

The application also provides a kind of display circuit with compensation function, including any institute in some above-described embodiments simultaneously The image element circuit stated.

Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among changing still in the protection domain of the invention.

Claims (6)

1. a kind of image element circuit with compensation function, it is characterised in that including:5th transistor T5, the 5th transistor T5 includes control pole, first electrode and second electrode, and the first electrode of the 5th transistor T5 is connected with the first power supply, described 5th transistor T5 second electrode constitutes first node N1;First electric capacity C1, one end of the first electric capacity C1 and the first electricity Source is connected, and the other end of the first electric capacity C1 constitutes Section Point N2;The first transistor T1, the first transistor T1 include Control pole, first electrode and second electrode, the first electrode of the first transistor T1 are connected with the first node N1;It is described The first transistor T1 second electrode is directly or indirectly connected with the 3rd power supply;The control pole of the first transistor T1 and the picture The third line scan control line that plain circuit is expert at is connected;Second transistor T2, the second transistor T2 include control pole, the One electrode and second electrode, the first electrode of the second transistor T2 are connected with first node N1;The second transistor T2 Control pole be connected with the Section Point N2;Third transistor T3, the third transistor T3 include control pole, first electrode And second electrode, the first electrode of the third transistor T3 is directly or indirectly connected with the Section Point N2;Described 3rd Transistor T3 second electrode is connected with the first node N1;The control pole of the third transistor T3 and the image element circuit institute The second row scan control line being expert at is connected;4th transistor T4, the 4th transistor T4 include control pole, first electrode and Second electrode, the control pole of the 4th transistor T4 is connected with the fourth line scan control line that the image element circuit is expert at;Institute The first electrode for stating the 4th transistor T4 is connected with data wire;The second electrode of the 4th transistor T4 and second crystal Pipe T2 second electrode is connected;6th transistor T6, the 6th transistor T6 include control pole, first electrode and the second electricity Pole, the first electrode of the 6th transistor T6 is connected with the second electrode of the second transistor T2, the 6th transistor T6 control pole is connected with the first row scan control line that the image element circuit is expert at;The second electrode of the 6th transistor T6 Constitute the output end for connecting dc electroluminescence device.
2. a kind of image element circuit with compensation function according to claim 1, it is characterised in that also including the 7th crystal Pipe T7, the 7th transistor T7 include control pole, first electrode and second electrode, wherein, the of the 7th transistor T7 One electrode is connected with the first transistor T1 second electrode, and the second electrode of the 7th transistor T7 is connected with the 3rd power supply; The control pole of the 7th transistor T7 is connected with the third line scan control line that the image element circuit is expert at.
3. a kind of image element circuit with compensation function according to claim 1 or 2, it is characterised in that also including the 8th Transistor T8, the 8th transistor T8 include control pole, first electrode and second electrode, wherein, the 8th transistor T8 First electrode be connected with Section Point N2;The second electrode of the 8th transistor T8 and the first of the third transistor T3 Electrode is connected;The control pole of the 8th transistor T8 is connected with the second row scan control line that the image element circuit is expert at.
4. a kind of image element circuit with compensation function according to claim 3, it is characterised in that also electroluminescent including direct current Luminescent device, the positive pole of the dc electroluminescence device is connected with the output end, the dc electroluminescence device it is negative Pole is connected with second source.
5. a kind of driving method of the image element circuit according to claim 1 with compensation function, it is characterised in that will be every The scan period of row pixel is divided into first time period t1, second time period t2 and the 3rd time period t 3, wherein, first time period T1, the third line scan control signal and the second row scan control signal are low level, the first transistor T1 and third transistor T3 Turned on by low level the third line scan control signal and the second row scan control signal, the voltage of the 3rd power supply is provided Give Section Point N2;Second time period t2, the second row scan control signal and fourth line scan control signal are low level, the 3rd Transistor T3 and the 4th transistor T4 responds low level second row scan control signal and fourth line scan control signal and led Logical, the second transistor T2 connected by third transistor T3 by diode is turned on;3rd time period t 3, the first row scanning control Signal transition processed is turned on to low level, the 5th transistor T5 and the 6th transistor T6 by the first row scan control signal, the The driving current that one power supply is provided is along through the 5th transistor T5, second transistor T2, the 6th transistor T6 and organic electroluminescent The path of device flows to second source.
6. a kind of display circuit with compensation function, it is characterised in that including any described pixels of some claim 1-4 Circuit.
CN201310737429.4A 2013-12-27 2013-12-27 Image element circuit and driving method and display circuit with compensation function CN104751775B (en)

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