CN101916533B - Organic light emitting display and drive method thereof - Google Patents
Organic light emitting display and drive method thereof Download PDFInfo
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- CN101916533B CN101916533B CN2010101894450A CN201010189445A CN101916533B CN 101916533 B CN101916533 B CN 101916533B CN 2010101894450 A CN2010101894450 A CN 2010101894450A CN 201010189445 A CN201010189445 A CN 201010189445A CN 101916533 B CN101916533 B CN 101916533B
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Abstract
The invention discloses an organic light emitting display, which comprises a plurality of scanning line, a plurality of column-common electrodes and a plurality of column pixels, wherein the scanning lines sequentially transmit scanning signals; the column-common electrodes are configured in parallel with the scanning lines and sequentially transmit common voltage signals corresponding to the scanning signals; and the column pixels are electrically coupled to the scanning lines and the column-common electrodes and sequentially receive the scanning signals and the common voltage signals. In addition, the invention also discloses a drive method for the organic light emitting display.
Description
[technical field]
Content of the present invention relates to a kind of display, and particularly relevant for a kind of organic light emitting display.
[background technology]
Generally speaking, organic luminescent assembly has the advantages such as self-luminosity, wide viewing angle, high contrast, low power consumption, high reaction rate, so it is applied in the flat-panel screens at large.With active matrix organic light-emitting display (Active Matrix OLED, AMOLED), in the picture element zone, generally include organic luminescent assembly and thin film transistor (TFT) (TFT), and the electric current that organic luminescent assembly was produced by thin film transistor (TFT) and when operation thereof drives.
Yet, owing to when making the thin film transistor (TFT) array, often can because of the impact of process variation, cause different thin film transistor (TFT)s critical voltage (V to each other
Th) may be not quite similar, so that also difference to some extent of the drive current that produces of thin film transistor (TFT) when operation, and then cause the brightness that each organic luminescent assembly sends possibly can't be consistent, so that display picture when show image has the problem of brightness irregularities (mura).
[summary of the invention]
One purpose of content of the present invention is that a kind of organic light emitting display is being provided, and uses the problem that picture when improving its show image has brightness irregularities.
Another purpose of content of the present invention is that a kind of driving method of organic light emitting display is being provided, and uses the organic luminescent assembly that makes in the display and is driven and send consistent brightness.
One technology sample attitude of content of the present invention is about a kind of organic light emitting display, and it comprises multi-strip scanning line, multiple row common electrode and multiple row picture element.Above-mentioned sweep trace is sequentially to transmit a plurality of sweep signals.Above-mentioned row common electrode is parallel to sweep trace and disposes, and in order to sequentially to transmit a plurality of common electric voltage signals that correspond to sweep signal.Above-mentioned row picture element is electrically coupled to sweep trace and row common electrode, and sequentially receives sweep signal and corresponding common electric voltage signal.
Another technology sample attitude of content of the present invention is the driving method about a kind of organic light emitting display, wherein organic light emitting display comprises a plurality of row picture elements, each row picture element comprises a plurality of driver elements and a plurality of luminescence component, and driver element is in order to drive luminescence component.This driving method comprises: transmit one first sweep signal, with the driver element in the first row picture element in the control row picture element; Transmission corresponds to one first common electric voltage signal of the first sweep signal, with the luminescence component in the reverse blas first row picture element; Remove the first sweep signal and transmit one second sweep signal, with the driver element in the secondary series picture element in the control row picture element; And remove the first common electric voltage signal and transmit the one second common electric voltage signal that corresponds to the second sweep signal, with the luminescence component in the reverse blas secondary series picture element.
The another technology sample attitude of content of the present invention is about a kind of organic light emitting display, and it comprises multi-strip scanning line, multiple row common electrode and multiple row picture element.Sweep trace is sequentially to transmit a plurality of sweep signals.The row common electrode is parallel to sweep trace and disposes, and in order to sequentially to transmit a plurality of common electric voltage signals that produce according to sweep signal.The row picture element is electrically coupled to sweep trace and row common electrode.
Each row picture element comprises a plurality of luminescence components and a plurality of driver element.The first end of luminescence component is electrically coupled to a row common electrode corresponding in the row common electrode.Driver element is to drive luminescence component.Wherein, the row picture element receives sweep signal and corresponding common electric voltage signal in mode by column, so that the driver element in each row picture element controlled by the corresponding one in the sweep signal, and the luminescence component in each row picture element carries out reverse blas by the corresponding one in the common electric voltage signal.
According to technology contents of the present invention, the driving method of application of aforementioned organic light emitting display and organic light emitting display, can be so that the image that shows have the advantages such as high resolving power (PPI), askiatic ghost, and can allow luminescence component in the picture element when driving, avoid being subject to the critical voltage (V of voltage source or thin film transistor (TFT)
Th) variation impact.
[description of drawings]
Fig. 1 illustrates a kind of synoptic diagram of organic light emitting display according to the embodiment of the invention.
Fig. 2 illustrates a kind of synoptic diagram of pixel circuit according to the embodiment of the invention.
Fig. 3～5 illustrate a kind of operation chart of pixel circuit as shown in Figure 2 according to the embodiment of the invention.
Time sequential routine figure in Fig. 6 illustrates sweep signal and the common electric voltage signal is during different according to the embodiment of the invention.
Fig. 7 illustrates as shown in Figure 2 pixel circuit at the measurement of variation relation between drive current and the data-signal wherein under the situation of film crystal pipe different critical voltage.
[primary clustering symbol description]
100: organic light emitting display 102: picture element region
104: peripheral circuit region 110: sweep trace
130: row common electrode 140: the row picture element
150: control circuit 155: metal contact
200: pixel circuit 210: driver element
[embodiment]
Hereinafter cooperate appended graphic elaborating for embodiment, but the embodiment that provides limits the scope that the present invention is contained, and the description of structure running is non-in order to limit the order of its execution, any structure that is reconfigured by assembly, the device with impartial effect that produces is all the scope that the present invention is contained.Wherein graphic only for the purpose of description, do not map according to life size.
Fig. 1 illustrates a kind of synoptic diagram of organic light emitting display according to the embodiment of the invention.Organic light emitting display 100 comprise multi-strip scanning line 110, many data lines (D_N-1, D_N-2, D_N-3 ...), the multiple row common electrode (Cathode_1, Cathode_2 ...) 130 and the multiple row picture element (P1, P2 ...) 140.At this, each row picture element 140 comprises the same a plurality of picture elements that list in the picture element array, and each row common electrode 130 then is to correspond to separately a row picture element 140 to dispose, and gives corresponding row picture element 140 so that corresponding common electric voltage to be provided separately.
Above-mentioned sweep trace 110 in order to sequentially transmit a plurality of sweep signal Scan_1, Scan_2, Scan_3 ... Deng.Above-mentioned row common electrode 130 is parallel to sweep trace 110 and disposes, and in order to sequentially transmit correspond to sweep signal Scan_1, Scan_2, Scan_3 ... Deng a plurality of common electric voltage signal VSS.Above-mentioned row picture element 140 is electrically coupled to sweep trace 110 and row common electrode 130, and sequentially receive sweep signal Scan_1, Scan_2, Scan_3 ... Deng and corresponding common electric voltage signal VSS.
For example, the first sweep trace 110 transmits sweep signal Scan_1, first row common electrode (Cathode_1) 130 transmits the common electric voltage signal VSS that corresponds to sweep signal Scan_1, and first row picture element (P1) 140 receives sweep signal Scan_1 and common electric voltage signal VSS; Afterwards, the second sweep trace 110 transmits sweep signal Scan_2, secondary series common electrode (Cathode_2) 130 transmits the common electric voltage signal VSS that corresponds to sweep signal Scan_2, and secondary series picture element (P2) 140 receives sweep signal Scan_2 and common electric voltage signal VSS; The rest may be inferred.
In addition, organic light emitting display 100 shown in Figure 1 can roughly be divided into picture element region 102 and peripheral circuit region 104, wherein picture element region 102 comprise above-mentioned sweep trace 110, data line (D_N-1, D_N-2, D_N-3 ...), row common electrode 130 and row picture element 140, peripheral circuit region 104 then is to control picture element region 102, and the assembly in the picture element region 102 is sequentially operated.Particularly, peripheral circuit region 104 comprises control circuit 150 and electrode drive assembly (as: transistor M1 and M2), wherein control circuit 150 is in order to control transistor M1 and M2, and transistor M1 and M2 are electrically coupled between metal contact 155 and the common electric voltage signal VSS, and couple by metal contact 155 and row common electrode 130.
Secondly, the end of transistor M1 and M2 is coupled to metal contact 155 jointly, and the other end of transistor M1 and M2 then is respectively coupled to the common electric voltage signal VSS (VSS_L) of tool low level and the common electric voltage signal VSS (VSS_H) of tool high levels.In the present embodiment, control circuit 150 can be a vertical movement buffer (vertical shift register), and low level common electric voltage signal VSS_L and high levels common electric voltage signal VSS_H then can be provided by the flexible PCB in the organic light emitting display 100 (FPC) (not illustrating).
In operation, when control circuit 150 according to sweep signal Scan_1, Scan_2, Scan_3 ... when going to control transistor M1 and M2, according to the conducting of transistor M1 and M2 whether low level common electric voltage VSS_L and high levels common electric voltage VSS_H can be, provide accordingly to the row common electrode (Cathode_1, Cathode_2 ...) 130.For example, with first row picture element (P1) 140, when sweep signal Scan_1 exports, control circuit 150 accordingly transfer control signal (as: low level signal) with turn-on transistor M2 and close transistor M1, this moment, high levels common electric voltage VSS_H can provide to first row common electrode (Cathode_1) 130 via transistor M2 and metal contact 155, so that first row common electrode (Cathode_1) 130 transmits the first common electric voltage signal VSS_H (VSS_N as shown in Figure 6 of high levels in the data during writing of first row picture element (P1) 140, N=1), this moment, first row picture element (P1) 140 driven by the sweep signal Scan_1 of corresponding the first common electric voltage signal VSS_H.
Afterwards, in secondary series picture element (P2) 140, when sweep signal Scan_2 exports, control circuit 150 accordingly transfer control signal (as: low level signal) with turn-on transistor M2 and close transistor M1, this moment, high levels common electric voltage signal VSS_H can provide to secondary series common electrode (Cathode_2) 130 via transistor M2 and metal contact 155, so that secondary series common electrode (Cathode_2) 130 transmits the second common electric voltage signal VSS_H (VSS_N as shown in Figure 6 of high levels in the data during writing of secondary series picture element (P2) 140, N=2), this moment, secondary series picture element (P2) 140 driven by the sweep signal Scan_2 of corresponding the second common electric voltage signal VSS_H.The rest may be inferred in the operation of all the other row picture elements.
In addition, above-mentioned mode by control circuit 150 control transistor M1 and M2 also can be done different designs.For example, the other end of transistor M1 and M2 is designed to respectively be coupled to the common electric voltage signal VSS_H of tool high levels and the common electric voltage signal VSS_L of tool low level.In first row picture element (P1) 140, when sweep signal Scan_1 exports, transfer control signal (as: high levels signal) is with turn-on transistor M1 and close transistor M2 accordingly for control circuit 150, and high levels common electric voltage VSS_H can provide to first row common electrode (Cathode_1) 130 via transistor M1 and metal contact 155; Then, in secondary series picture element (P2) 140, when sweep signal Scan_2 exports, transfer control signal (as: high levels signal) is with turn-on transistor M1 and close transistor M2 accordingly for control circuit 150, and high levels common electric voltage VSS_H can provide to first row common electrode (Cathode_2) 130 via transistor M1 and metal contact 155; The rest may be inferred in the operation of all the other row picture elements.
Therefore, this area tool knows that usually the knowledgeable is when can be according to high levels common electric voltage signal VSS_H and low level common electric voltage signal VSS_L and the actual mode that is connected with M2 of transistor M1, adjust the operation of above-mentioned control circuit 150 control transistor M1 and M2, so that row common electrode 130 transmits the common electric voltage signal of high levels in the data during writing of row picture element 140, above-mentioned only for convenience of description, not as limit.
In addition, though above-described embodiment transmits high levels common electric voltage signal as example take row picture element 140 in the data during writing, so also can be according to actual demand, usually know that by this area tool the knowledgeable is designed to transmit low level common electric voltage signal (for example: by changing signal VSS_H with the actual mode that is connected with M2 of VSS_L and transistor M1 and adjusting the operation that control circuit 150 is controlled transistor M1 and M2) with above-described embodiment, using for other corresponding circuit, is not to be limited with above-described embodiment at this.
In the present embodiment, because each row picture element 140 includes the same a plurality of picture elements that list in the picture element array, so each row picture element 140 all can more comprise corresponding a plurality of pixel circuits.Fig. 2 illustrates a kind of synoptic diagram of pixel circuit according to the embodiment of the invention.See figures.1.and.2 simultaneously.Pixel circuit 200 comprises luminescence component (as: Organic Light Emitting Diode D1) and driver element 210, wherein the end (as: anode) of diode D1 is electrically coupled to driver element 210, the other end of diode D1 (as: negative electrode) then is electrically coupled to a row common electrode 130 wherein, so that diode D1 receives common electric voltage signal VSS in can be during suitable.Particularly, first row common electrode (Cathode_1) 130 has the high levels common electric voltage and corresponding diode D1 is carried out reverse blas in the data during writing of first row picture element (P1) 140, and secondary series common electrode (Cathode_2) 130 has the high levels common electric voltage and corresponding diode D1 is carried out reverse blas in the data during writing of secondary series picture element (P2) 140; The rest may be inferred in the operation of all the other row common electrodes.
In other words, the row picture element (P1, P2 ...) 140 with mode by column receive sweep signal Scan_1, Scan_2, Scan_3 ... Deng and corresponding common electric voltage signal, so that the driver element 210 in each row picture element 140 by sweep signal Scan_1, Scan_2, Scan_3 ... Deng in corresponding one control, and the luminescence component in each row picture element 140 (as: Organic Light Emitting Diode D1) carries out reverse blas by the corresponding one in the common electric voltage signal.
In addition, driver element 210 is in order to drive diode D1, and comprise storage capacitors Cst, driving transistors M4 (being generally thin film transistor (TFT)) and switch M21, M22 and M3, wherein M21, M3 and M4 can be the PMOS transistor, M22 can be nmos pass transistor, and the concrete connected mode of storage capacitors Cst, driving transistors M4 and switch M21, M22 and M3 can as shown in Figure 2, repeat no more in this.
Haply, driving transistors M4 bridges between the anode of voltage source V DD and diode D1, and the end of its control end electric property coupling storage capacitors Cst.Switch M3 is opened by sweep signal Scan_N, and the therefore end that couples of the anode of the control end of conducting driving transistors M4 and transistor M4 and diode D1.Switch M21 is opened by sweep signal Scan_N, and therefore data voltage Vdata is coupled to the other end of storage capacitors Cst.Switch M22 opens during the demonstration of corresponding row picture element, and therefore is coupled to storage capacitors Cst with reference to voltage Vref.
Because each row picture element 140 can more comprise a plurality of pixel circuits 200, therefore each row picture element 140 all can comprise corresponding a plurality of luminescence components (as: Organic Light Emitting Diode D1) and a plurality of driver element 210, and each driver element 210 all can comprise above-mentioned storage capacitors Cst, driving transistors M4 and switch M21, M22 and M3, its main difference be the different lines picture element (P1, P2 ...) in 140 pixel circuit 200 according to the different scanning signal (Scan_1, Scan_2 ...) operate.For example, at first the pixel circuit 200 in the first row picture element (P1) 140 is activated by sweep signal Scan_1, carry out image display so that the diode D1 in the first row pixel circuit 200 is luminous, then the pixel circuit 200 in the secondary series picture element (P2) 140 is activated by sweep signal Scan_2 again, carries out image display so that the diode D1 in the secondary series pixel circuit 200 is luminous; The rest may be inferred in the operation of all the other row pixel circuits 200.
Fig. 3～5 illustrate a kind of operation chart of pixel circuit as shown in Figure 2 according to the embodiment of the invention.Time sequential routine figure in Fig. 6 illustrates sweep signal and the common electric voltage signal is during different according to the embodiment of the invention.Simultaneously with reference to Fig. 3～5 and Fig. 6.At this, for convenience of description for the purpose of, the pixel circuit of Fig. 3～5 in the N row picture element explains as example.
At first in Fig. 3, in during t1 (this can claim for interdischarge interval) in, sweep signal Scan_N is in the low level state, and common electric voltage signal VSS_N also is in low level state (VSS_L), this moment, switch M22 closed, switch M21 opens and so that data-signal Vdata_N is sent to storage capacitors Cst via switch M21, cause node NC to have the current potential Vdata corresponding with data-signal Vdata_N, diode D1 then is along state partially according to low level common electric voltage signal VSS_L, and switch M3 also can open and is down to VSS_L+V so that the current potential of node Vg4 draws
OledThus, node Vg4 just can during draw in the t1 and be down to relative electronegative potential, with the action of reset (reset), so that the variation of electric current all can be consistent when subsequent conditioning circuit operates, avoiding current curve to produce hysteresis, and then prevent that show image from having the appearance of ghost.
Then in Fig. 4, in during t2 (this can claim for the data during writing) in, sweep signal Scan_N still is in the low level state, common electric voltage signal VSS_N then changes into the high levels state (VSS_H) that is in, this moment, switch M22 still closed, switch M21 and M3 still open, diode D1 then is contrary partially state according to high levels common electric voltage signal VSS_H, and transistor M4 can be because of conducting so that the voltage of node Vg4 charges to VDD-|Vth4| by transistor M4, and wherein Vth4 represents the critical voltage of transistor M4.
Then in Fig. 5, in during t3 (this can claim between light emission period) in, sweep signal Scan_N changes into the high levels state that is in, common electric voltage signal VSS_N then changes into the low level state (VSS_L) that is in, this moment, switch M21 and M3 closed, switch M22 opens and so that the current potential of node NC is pulled up to reference voltage Vref by switch M22, and diode D1 then is along state partially according to low level common electric voltage signal VSS_L.Because the current potential of node NC has the variation of Vref-Vdata, therefore node Vg4 also has identical variation, so that the current potential of node Vg4 increases to VDD-|Vth4|+Vref-Vdata, cause transistor M4 conducting and produce drive current Ids, use that to drive diode D1 luminous.
In this it should be noted that between light emission period, the value of drive current Ids can be derived by following mathematics formula:
Ids＝1/2·β·(Vsg4-|Vth4|)
2
＝1/2·β·(Vs4-Vg4-|Vth4|)
2
＝1/2·β·{VDD-(VDD-|Vth4|+Vref-Vdata)-|Vth4|}
2
＝1/2·β·(Vdata-Vref)
2
Therefore the value of drive current I ds can be by 1/2 β (Vdata-Vref)
2Represent, and with the critical voltage Vth4 of voltage source V DD and transistor M4 all without direct relation.Thus, just can avoid causing in each picture element drive current Ids mutually internally inconsistent because power voltage drop (IR-drop) occurs voltage source V DD, or because process variation causes the critical voltage Vth4 of transistor M4 in each picture element all not identical each other, and cause the mutual inconsistent problem of drive current Ids in each picture element.Fig. 7 illustrates as shown in Figure 2 pixel circuit at the measurement of variation relation between drive current and the data-signal wherein under the situation of film crystal pipe different critical voltage.As shown in the figure, be respectively at critical voltage (Vth)-4.23V ,-3.93V and-situation of 4.53V under, when the corresponding current potential Vdata of data-signal changed, drive current Ids was still only along with Vdata changes, and can not be subject to the impact of different critical voltage.
On the other hand, after the operation of the pixel circuit in the N row picture element is finished, then the pixel circuit in the N+1 row picture element just can be with the mode of operation of the pixel circuit in the similar N row picture element, respectively at t6 between interdischarge interval t4, data during writing t5 and light emission period, operate according to the not coordination standard of sweep signal Scan_N+1, common electric voltage signal VSS_N+1 and data-signal Vdata_N+ 1.
By above-mentioned Fig. 1 and Fig. 3～6 as can be known, different lines picture element in the embodiment of the invention (P1, P2 ...) pixel circuit 200 in 140, can operate according to received sweep signal and common electric voltage signal, wherein all can there be a time delay (t1 as shown in Figure 6, t4) between sweep signal and the common electric voltage signal, and be opposite state in the position of data during writing (t2 as shown in Figure 6, t5) sweep signal and common electric voltage signal standard.For instance, accurate position with the first common electric voltage signal VSS_1, the position of the first sweep signal Scan_1 is accurate opposite; Accurate position with the second common electric voltage signal VSS_2, the position of the second sweep signal Scan_2 is accurate opposite; The rest may be inferred for all the other.Relation between said scanning signals and the common electric voltage signal, it mainly is the design according to pixel circuit 200, therefore this area tool is known the knowledgeable usually, without departing from the spirit and scope of the present invention, and when the relation between sweep signal and the common electric voltage signal being designed to required aspect.
On the other hand, the embodiment of the invention also provides a kind of driving method of organic light emitting display.Simultaneously with reference to Fig. 1, Fig. 2 and Fig. 6.At first, transmit the first sweep signal Scan_1, with the driver element 210 in the first row picture element (P1) 140 in the control row picture element 140.Then, transmit the first common electric voltage signal VSS_1 that corresponds to the first sweep signal Scan_1, so that the luminescence component in the first row picture element (P1) 140 (as: Organic Light Emitting Diode D1) is carried out reverse blas.Afterwards, remove the first sweep signal Scan_1 and transmit the second sweep signal Scan_2, with the driver element 210 in the secondary series picture element (P2) 140 in the control row picture element 140.Then, remove the first common electric voltage signal VSS_1 and transmit the second common electric voltage signal VSS_2 that corresponds to the second sweep signal Scan_2, so that the luminescence component in the secondary series picture element (P2) 140 (as: Organic Light Emitting Diode D1) is carried out reverse blas.
In the present embodiment, when the first sweep signal Scan_1 exported, the first common electric voltage signal VSS_1 is immediately accordingly output just, have a very short time delay (t1 as shown in Figure 6) between the two, and both positions is accurate opposite; In addition, when the second sweep signal Scan_2 exported, the second common electric voltage signal VSS_2 is immediately accordingly output just, have a very short time delay (t4 as shown in Figure 6) between the two, and both positions is accurate opposite.
Then, remove the second sweep signal Scan_2 and transmit the 3rd sweep signal Scan_3, with the driver element 210 in the 3rd row picture element (P3) 140 in the control row picture element 140.Then, remove the second common electric voltage signal VSS_2 and transmit the 3rd common electric voltage signal VSS_3 that corresponds to the 3rd sweep signal Scan_3, so that the luminescence component (as: Organic Light Emitting Diode D1) in the 3rd row picture element (P3) 140 is carried out reverse blas.
In the present embodiment, when the 3rd sweep signal Scan_3 exported, the 3rd common electric voltage signal VSS_3 is immediately accordingly output just, have a very short time delay between the two, and both positions is accurate opposite.
Hence one can see that, driver element 210 in all the other row picture elements (PN) 140 and luminescence component all operate according to corresponding sweep signal Scan_N and common electric voltage signal VSS_N, after the to the last driver element 210 in row picture element 140 and luminescence component operation is finished, optionally switch again from sequentially operation of first row picture element (P1) 140 beginnings.
By the embodiment of the invention described above as can be known, because each row common electrode is to dispose corresponding to a row picture element separately, therefore the row common electrode can provide corresponding common electric voltage to give corresponding row picture element separately within operating period, compared to known technology with corresponding all picture elements do configurations of single common electrode, the embodiment of the invention more can make the pixel circuit in the picture element carry out corresponding operation.
In addition, because each row common electrode is sequentially to provide separately common electric voltage to give corresponding row picture element within the operating period of correspondence, be to offer pixel circuit in the picture element with single fixing common electric voltage compared to known techniques, the embodiment of the invention more can make the pixel circuit in the picture element carry out corresponding operation.
Moreover, because the drive current in the pixel circuit and the critical voltage of voltage source and driving transistors are all without direct relation, therefore can avoid causing in each picture element drive current Ids mutually internally inconsistent because of voltage source generation power voltage drop (IR-drop), or because process variation causes the critical voltage of driving transistors in each picture element all not identical each other, and cause the mutual inconsistent problem of drive current in each picture element.
Although the present invention discloses as above with embodiment; so it is not to limit the present invention; any this area tool is known the knowledgeable usually; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (14)
1. organic light emitting display comprises:
The multi-strip scanning line is in order to sequentially to transmit a plurality of sweep signals;
A plurality of row common electrodes are parallel to described sweep trace and dispose, and in order to sequentially to transmit a plurality of common electric voltage signals that correspond to described sweep signal; And
A plurality of row picture elements are electrically coupled to described sweep trace and described row common electrode, and sequentially receive described sweep signal and corresponding described common electric voltage signal, and described row picture element comprises:
One first row picture element comprises a plurality of the first pixel circuits, and at least one in described the first pixel circuit comprises:
One first luminescence component, an end of this first luminescence component are electrically coupled to the first row common electrode in the described row common electrode; And
One first driver element is in order to drive this first luminescence component; And
One secondary series picture element comprises a plurality of the second pixel circuits, comprising one of at least in described the second pixel circuit:
One second luminescence component, an end of this second luminescence component are electrically coupled to the secondary series common electrode in the described row common electrode; And
One second driver element is in order to drive this second luminescence component; Wherein, each described first driver element more comprises:
One first storage capacitors;
One first driving transistors bridges between the other end and a voltage source of this first luminescence component an end of this first storage capacitors of control end electric property coupling of this first driving transistors;
One first switch is opened and first end and this control end of this first driving transistors of conducting by one first sweep signal in the described sweep signal;
One second switch is opened and one first data voltage is coupled to the other end of this first storage capacitors by this first sweep signal; And
One the 3rd switch is opened during the demonstration of this first row picture element and one first reference voltage is coupled to this first storage capacitors;
Wherein, each described second driver element more comprises:
One second storage capacitors;
One second driving transistors bridges between the other end and this voltage source of this second luminescence component an end of this second storage capacitors of control end electric property coupling of this second driving transistors;
One the 4th switch is opened and first end and this control end of this second driving transistors of conducting by one second sweep signal in the described sweep signal;
One the 5th switch is opened and one second data voltage is coupled to the other end of this second storage capacitors by this second sweep signal; And
One the 6th switch is opened during the demonstration of this secondary series picture element and one second reference voltage is coupled to this second storage capacitors.
2. organic light emitting display according to claim 1, it is characterized in that, this first row common electrode transmits one first common electric voltage signal in the described common electric voltage signal in the data during writing of this first row picture element, and this secondary series common electrode transmits one second common electric voltage signal in the described common electric voltage signal in the data during writing of this secondary series picture element.
3. organic light emitting display according to claim 2, it is characterized in that, when this first row common electrode transmits this first common electric voltage signal, this first row picture element is that one first sweep signal by corresponding this first common electric voltage signal in the described sweep signal is driven, when this secondary series common electrode transmitted this second common electric voltage signal, this secondary series picture element was driven by one second sweep signal of corresponding this second common electric voltage signal in the described sweep signal.
4. organic light emitting display according to claim 3, it is characterized in that, this first row common electrode carries out reverse blas in the data during writing of this first row picture element to this first luminescence component, and this secondary series common electrode carries out reverse blas in the data during writing of this secondary series picture element to this second luminescence component.
5. organic light emitting display according to claim 4, it is characterized in that, this first row common electrode transmits one first common electric voltage signal of corresponding this first sweep signal in the described common electric voltage signal, and this secondary series common electrode transmits one second common electric voltage signal of corresponding this second sweep signal in the described common electric voltage signal.
6. organic light emitting display according to claim 5 is characterized in that, the phase place of this first sweep signal is accurate opposite with the position of this first common electric voltage signal, and the phase place of this second sweep signal is accurate opposite with the position of this second common electric voltage signal.
7. organic light emitting display according to claim 5 is characterized in that, this first luminescence component carries out reverse blas by this first common electric voltage signal, and this second luminescence component carries out reverse blas by this second common electric voltage signal.
8. organic light emitting display according to claim 1 is characterized in that, more comprises:
A plurality of electrode drive assemblies bridge between described row common electrode and the common electric voltage accordingly; And
One control circuit is in order to sequentially to open described electrode drive assembly, so that this common electric voltage sequentially is coupled to described row common electrode via described electrode drive assembly according to described sweep signal.
9. the driving method of an organic light emitting display, this organic light emitting display comprises a plurality of row picture elements, each described row picture element comprises a plurality of driver elements and a plurality of luminescence component, and wherein said driver element is in order to drive described luminescence component, and this driving method comprises:
Transmit one first sweep signal, to control the described driver element in the first row picture element in the described row picture element;
Transmission corresponds to one first common electric voltage signal of this first sweep signal, with the described luminescence component in this first row picture element of reverse blas;
Remove this first sweep signal and transmit one second sweep signal, to control the described driver element in the secondary series picture element in the described row picture element; And
Remove this first common electric voltage signal and transmit the one second common electric voltage signal that corresponds to this second sweep signal, with the described luminescence component in this secondary series picture element of reverse blas; Remove this second sweep signal and transmit one the 3rd sweep signal, to control the described driver element in one the 3rd row picture element in the described row picture element; And
Remove this second common electric voltage signal and transmit one the 3rd common electric voltage signal that corresponds to the 3rd sweep signal, with the described luminescence component in reverse blas the 3rd row picture element; Wherein, this first sweep signal is accurate opposite with the position of this first common electric voltage signal, and this second sweep signal is accurate opposite with the position of this second common electric voltage signal; Have a time delay between this first sweep signal and this first common electric voltage signal, have another time delay between this second sweep signal and this second common electric voltage signal.
10. driving method according to claim 9, it is characterized in that, this the first common electric voltage signal, this second common electric voltage signal and the 3rd common electric voltage signal sequentially produce according to this first sweep signal, this second sweep signal and the 3rd sweep signal, and have a time delay respectively and between this first sweep signal, this second sweep signal and the 3rd sweep signal.
11. an organic light emitting display comprises:
The multi-strip scanning line is in order to sequentially to transmit a plurality of sweep signals;
A plurality of row common electrodes are parallel to described sweep trace and dispose, and in order to sequentially to transmit a plurality of common electric voltage signals that produce according to described sweep signal; And
A plurality of row picture elements are electrically coupled to described sweep trace and described row common electrode, and each described row picture element comprises:
A plurality of luminescence components, the first end of described luminescence component are electrically coupled to a row common electrode corresponding in the described row common electrode; And
A plurality of driver elements, in order to drive described luminescence component, each described driver element more comprises:
One storage capacitors;
One driving transistors bridges between second end and a voltage source of corresponding one in the described luminescence component end of this storage capacitors of control end electric property coupling of this driving transistors;
One first switch is opened and first end and this control end of this driving transistors of conducting by one corresponding in the described sweep signal;
One second switch is opened and a data voltage is coupled to the other end of this storage capacitors by corresponding this person in the described sweep signal; And
One the 3rd switch is opened during the demonstration of corresponding one in described row picture element and a reference voltage is coupled to this storage capacitors;
Wherein said row picture element receives described sweep signal and corresponding described common electric voltage signal in mode by column, so that the described driver element in each described row picture element controlled by the corresponding one in the described sweep signal, and the described luminescence component in each described row picture element carries out reverse blas by the corresponding one in the described common electric voltage signal.
12. organic light emitting display according to claim 11 is characterized in that, described row common electrode transmits corresponding described common electric voltage signal in the data during writing of corresponding described row picture element.
13. organic light emitting display according to claim 11 is characterized in that, more comprises:
A plurality of electrode drive assemblies bridge between described row common electrode and the common electric voltage accordingly; And
One control circuit is in order to sequentially to open described electrode drive assembly, so that this common electric voltage sequentially is coupled to described row common electrode via described electrode drive assembly according to described sweep signal.
14. organic light emitting display according to claim 11, the phase place of described sweep signal are all accurate opposite with the position of corresponding described common electric voltage signal.
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| US9892684B2 (en) | 2016-01-29 | 2018-02-13 | Shenzhen China Star Optoelectroniccs Technology Co., Ltd. | Pixel compensation circuit and method |
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| CN103137062A (en) * | 2011-11-24 | 2013-06-05 | 联胜（中国）科技有限公司 | Organic light emitting diode pixel circuit and driving circuit and application thereof |
| KR101411619B1 (en) * | 2012-09-27 | 2014-06-25 | 엘지디스플레이 주식회사 | Pixel circuit and method for driving thereof, and organic light emitting display device using the same |
| CN103137070B (en) * | 2013-02-21 | 2016-02-24 | 福建华映显示科技有限公司 | Organic LED display device and pixel circuit thereof |
| CN104064139B (en) * | 2014-06-05 | 2016-06-29 | 上海天马有机发光显示技术有限公司 | A kind of organic light-emitting diode pixel compensates circuit, display floater and display device |
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