CN102982766A - Pixel compensating circuit - Google Patents
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- CN102982766A CN102982766A CN2012105280052A CN201210528005A CN102982766A CN 102982766 A CN102982766 A CN 102982766A CN 2012105280052 A CN2012105280052 A CN 2012105280052A CN 201210528005 A CN201210528005 A CN 201210528005A CN 102982766 A CN102982766 A CN 102982766A
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Abstract
The invention provides a pixel compensating circuit which comprises a first switch, a second switch, a third switch, a fourth switch, a fifth switch and an organic light-emitting diode, wherein a first end of the first switch is connected to a data signal; a control end of the first switch is connected to a scanning signal; a first end of the second switch is connected to reference voltage; a control end of the second switch is connected to a switching signal; a first end of the third switch is connected to first voltage; a control end of the third switch is connected to a first control signal; a first end of the fourth switch is connected to a second end of the third switch; a first end of the fifth switch is connected to a second end of the fourth switch; a control end of the fifth switch is connected to a second control signal; an anode of the organic light-emitting diode is connected to a second end of the fifth switch; and a cathode of the organic light-emitting diode is connected to second voltage. The pixel compensating circuit adopts the independent switching signal to complete write-in of the reference voltage and realizes data write-in by the complete scanning signal during a low level period, so that data pulses have adequate pulse widths to realize driving at a high frame speed, and the problem that the panel display is nonuniform is solved.
Description
Technical field
The present invention relates to a kind of active matrix organic LED panel, relate in particular to the pixel compensation circuit of this AMOLED panel.
Background technology
Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) can be divided into passive matrix according to type of drive and drive (Passive Matrix OLED, PMOLED) and active-matrix drive (Active Matrix OLED, AMOLED) two kinds.Wherein, PMOLED does not write fashionable not luminous, only luminous in the data during writing when data.This type of drive is simple in structure, cost is lower, be easier to design, mainly is applicable to the display of small-medium size.
The difference of AMOLED and PMOLED maximum is to be, each pixel has capacitance stores data, allows each pixel all maintain luminance.Because AMOLED power consumption is significantly less than PMOLED, add that its type of drive is fit to the display of development large scale and high-res, so that AMOLED becomes the main direction of future development.In the prior art, a kind of image element circuit of AMOLED is two thin film transistor (TFT)s of 2T() a 1C(1 electric capacity) framework.With reference to Fig. 1, the transistorized source electrode of the first film is electrically connected to a data voltage Vdata, and its grid is electrically connected to one scan line Scan.The grid of the second thin film transistor (TFT) is electrically connected to the transistorized drain electrode of the first film, the source electrode of the second thin film transistor (TFT) be electrically connected to a voltage OVDD and and grid between comprise a memory capacitance C, the drain electrode of the second thin film transistor (TFT) is connected to the anode of an Organic Light Emitting Diode, and the negative electrode of this Organic Light Emitting Diode is electrically connected to a voltage OVSS.
Because the voltage OVDD on the AMOLED panel links together between each pixel, when driving is luminous, has electric current on the voltage OVDD and flow through.Consider that the OVDD metal wire itself has impedance, have pressure drop and exist, cause the OVDD of each pixel difference can occur, cause existing between different pixels current difference.Thus, the electric current of the OLED that flows through is different, and the brightness that produces is also different, and then the AMOLED panel is inhomogeneous.In addition, because the impact of processing procedure, the threshold voltage of the thin film transistor (TFT) in each pixel is all not identical, even the voltage Vdata of identical numerical value is provided, its electric current that produces still can be variant, and this also will cause panel inhomogeneous.In addition, if adopt the pixel compensation circuit that above-mentioned voltage is compensated, it is too short and affect compensation effect that most of compensating circuit can be subject to again sweep time.
In view of this, how designing a kind of pixel compensation circuit for the AMOLED panel, effectively to improve or to eliminate many defectives such as above-mentioned panel is inhomogeneous, is a problem needing to be resolved hurrily of person skilled in the industry.
Summary of the invention
For the existing defects of pixel compensation circuit for the AMOLED panel of the prior art, the invention provides a kind of pixel compensation circuit of novelty.
According to one aspect of the present invention, a kind of pixel compensation circuit is provided, comprising:
One first switch, the first end of described the first switch is electrically connected to a data-signal, and the control end of described the first switch is electrically connected to the one scan signal;
One second switch, the first end of described second switch is electrically connected to a reference voltage, and the control end of described second switch is electrically connected to a switching signal, and the second end of described second switch is electrically connected to the second end of described the first switch;
One the 3rd switch, the first end of described the 3rd switch are electrically connected to one first voltage, and the control end of described the 3rd switch is electrically connected to one first control signal, comprise one first electric capacity between the second end of described the 3rd switch and the first end;
One the 4th switch, the first end of described the 4th switch is electrically connected to the second end of described the 3rd switch, the control end of described the 4th switch is electrically connected to the second end of described the first switch, comprises one second electric capacity between the first end of described the 4th switch and the control end;
One the 5th switch, the first end of described the 5th switch are electrically connected to the second end of described the 4th switch, and the control end of described the 5th switch is electrically connected to one second control signal; And
One Organic Light Emitting Diode, its anode are electrically connected to the second end of described the 5th switch, and its negative electrode is electrically connected to a second voltage.
Preferably, the first switch, second switch, the 3rd switch, the 4th switch and the 5th switch are a thin film transistor (TFT).
Preferably, switching signal comprises during a reseting period, the voltage compensation and a data during writing successively, wherein, is adjustable during described reseting period and the described voltage compensation.
Preferably, in described reseting period, described switching signal is a low level signal, and described sweep signal is a high level signal, and described the first control signal is a low level signal, and described the second control signal is a high level signal.
Preferably, during described voltage compensation, described switching signal is a low level signal, and described sweep signal is a high level signal, and described the first control signal is a high level signal, and described the second control signal is a low level signal.
Preferably, in described data during writing, described switching signal is a high level signal, and described sweep signal is a low level signal, and described the first control signal is a high level signal, and described the second control signal is a high level signal.
According to another aspect of the present invention, a kind of pixel compensation circuit is provided, comprising:
One first switch, the first end of described the first switch is electrically connected to a data-signal, and the control end of described the first switch is electrically connected to the one scan signal;
One second switch, the first end of described second switch is electrically connected to a reference voltage, and the control end of described second switch is electrically connected to a switching signal, and the second end of described second switch is electrically connected to the second end of described the first switch;
One the 3rd switch, the first end of described the 3rd switch are electrically connected to one first voltage, and the control end of described the 3rd switch is electrically connected to one first control signal, comprise one first electric capacity between the second end of described the 3rd switch and the first end;
One the 4th switch, the first end of described the 4th switch is electrically connected to the second end of described the 3rd switch, the control end of described the 4th switch is electrically connected to the second end of described the first switch, comprises one second electric capacity between the first end of described the 4th switch and the control end; And
One Organic Light Emitting Diode, its anode are electrically connected to the second end of described the 4th switch, and its negative electrode is electrically connected to a second voltage.
Preferably, switching signal comprises during a reseting period, the voltage compensation and a data during writing successively, wherein, is adjustable during described reseting period and the described voltage compensation.
Preferably, in reseting period, described switching signal is a low level signal, and described sweep signal is a high level signal, and described the first control signal is a low level signal.
Preferably, during voltage compensation, this switching signal is a low level signal, and described sweep signal is a high level signal, and described the first control signal is a high level signal.
Adopt pixel compensation circuit of the present invention, one second switch is set, and its first end is electrically connected to a reference voltage and its control end is electrically connected to a switching signal, thereby utilize this independently switching signal finish writing of reference voltage, and by realizing writing of data between a complete sweep signal low period, so that data pulse has enough pulsewidths to realize the driving of high frame rate, and then improve the inhomogeneous problem of Display panel.
Description of drawings
The reader will become apparent various aspects of the present invention after the reference accompanying drawing has been read the specific embodiment of the present invention.Wherein,
Fig. 1 illustrates the basic principle figure of the pixel compensation circuit in the liquid crystal panel;
Fig. 2 illustrates the principle schematic that a kind of pixel compensation circuit of the prior art adopts " 4T2C " framework;
Fig. 3 illustrates the sequential synoptic diagram of the key signal of the pixel compensation circuit among Fig. 2;
Fig. 4 illustrates the principle schematic that another pixel compensation circuit of the prior art adopts " 3T2C " framework;
Fig. 5 illustrates the sequential synoptic diagram of the key signal of the pixel compensation circuit among Fig. 4;
Fig. 6 illustrates the structural representation according to the pixel compensation circuit of one embodiment of the present invention;
Fig. 7 illustrates the sequential synoptic diagram of the key signal of the pixel compensation circuit among Fig. 6;
Fig. 8 illustrates the structural representation according to the pixel compensation circuit of another embodiment of the present invention; And
Fig. 9 illustrates the sequential synoptic diagram of the key signal of the pixel compensation circuit among Fig. 8.
Embodiment
For technology contents that the application is disclosed is more detailed and complete, can be with reference to accompanying drawing and following various specific embodiments of the present invention, identical mark represents same or analogous assembly in the accompanying drawing.Yet those of ordinary skill in the art should be appreciated that the embodiment that hereinafter provides limits the scope that the present invention is contained.In addition, accompanying drawing only is used for schematically being illustrated, and does not draw according to its life size.
With reference to the accompanying drawings, the embodiment of various aspects of the present invention is described in further detail.
Fig. 1 illustrates the basic principle figure of the pixel compensation circuit in the liquid crystal panel.With reference to Fig. 1, the pixel compensation circuit on basis is one " 2T1C " framework, and the 2T here is thin film transistor (TFT) T11 and thin film transistor (TFT) T12, and 1C is the memory capacitance C1 of institute's cross-over connection between the grid of thin film transistor (TFT) T12 and the source electrode.That is the number of term " mTnC " expression thin film transistor (TFT) is m, and the number of memory capacitance is n, and m, n are natural number.
Wherein, the grid of thin film transistor (TFT) T11 is electrically connected to one scan signal Scan, and source electrode is used for receiving a data voltage signal, and drain electrode is connected with the grid of thin film transistor (TFT) T12.The source electrode of thin film transistor (TFT) T12 is electrically connected to a common electric voltage OVDD, and drain electrode is connected to a ground voltage OVSS via Organic Light Emitting Diode OLED.When driving when luminous, have electric current above the OVDD and flow through, because the OVDD on the panel is connected to each pixel, and the OVDD metal transmission line itself has impedance, thereby this OVDD can there are differences for different pixels.As previously mentioned, owing to have current difference between different pixels, even receive identical data voltage signal, the electric current of the OLED that flows through also can be different, and then make Display panel inhomogeneous.
Fig. 2 illustrates the principle schematic that a kind of pixel compensation circuit of the prior art adopts " 4T2C " framework, and Fig. 3 illustrates the sequential synoptic diagram of the key signal of the pixel compensation circuit among Fig. 2.
With reference to Fig. 2, a kind of framework mode of conventional pixel compensating circuit is to be, it adopts the 4T2C circuit structure, comprises thin film transistor (TFT) T13, T14, T15 and T16, and memory capacitance C1 and C2.
More specifically, the grid of thin film transistor (TFT) T13 receives one scan signal Scan, and source electrode receives a data voltage signal Data, and drain electrode is electrically connected to the grid of thin film transistor (TFT) T15.The source electrode of thin film transistor (TFT) T14 is electrically connected to a common electric voltage VDD, and grid is used for receiving one first control signal CTRL1, cross-over connection one memory capacitance C2 between its source electrode and the drain electrode.The source electrode of thin film transistor (TFT) T15 is connected to the drain electrode of thin film transistor (TFT) T14, cross-over connection one memory capacitance C1 between its grid and the source electrode.The source electrode of thin film transistor (TFT) T16 is connected with the drain electrode of thin film transistor (TFT) T15, and its grid is used for receiving one second control signal CTRL2, and drain electrode is connected to a ground voltage OVSS via an Organic Light Emitting Diode OLED.
As shown in Figure 3, the pulse waveform of sweep signal Scan can be divided into three phases, is followed successively by reseting period t1, reference voltage t2 and data during writing t3 between the amortization period.Should be understood that, in the pixel compensation circuit, reference voltage Vref for reseting period t1 and between the amortization period t2 be necessary, therefore, at reseting period t1 with between the amortization period in the t2, sweep signal Scan perseverance is low level, and thin film transistor (TFT) T13 is open-minded, and reference voltage Vref is written into by the noble potential of data voltage signal.And at data during writing t3, sweep signal Scan still is low level, and by means of the high level of the first control signal CTRL1 and the high level of the second control signal CTRL2, data voltage signal D1 is written into.Yet, according to signal sequence shown in Figure 3, during 1H (being t1, t2 and t3 sum), namely, sweep signal Scan be low level during, the during writing of data voltage signal is t3 only, that is to say, during 1H in, be used for writing reference voltage Vref during also having t1 and t2 corresponding, will cause like this pulsewidth of data pulse less, can't realize the driving of high frame rate, and then cause the problem that Display panel is inhomogeneous.
Fig. 4 illustrates the principle schematic that another pixel compensation circuit of the prior art adopts " 3T2C " framework, and Fig. 5 illustrates the sequential synoptic diagram of the key signal of the pixel compensation circuit among Fig. 4.
Be similar to Fig. 2, the another kind of framework mode of conventional pixel compensating circuit is to be to adopt the 3T2C circuit structure, and as shown in Figure 4, it comprises thin film transistor (TFT) T17, T18 and T19, and memory capacitance C1 and C2.
More specifically, the grid of thin film transistor (TFT) T17 receives one scan signal Scan, and source electrode receives a data voltage signal Data, and drain electrode is electrically connected to the grid of thin film transistor (TFT) T19.The source electrode of thin film transistor (TFT) T18 is electrically connected to a common electric voltage VDD, and grid is used for receiving one first control signal CTRL1, cross-over connection one memory capacitance C2 between its source electrode and the drain electrode.The source electrode of thin film transistor (TFT) T19 is connected to the drain electrode of thin film transistor (TFT) T18, cross-over connection one memory capacitance C1 between its grid and the source electrode, and drain electrode is connected to a ground voltage OVSS via an Organic Light Emitting Diode OLED.
As shown in Figure 5, the pulse waveform of sweep signal Scan also can be divided into three phases, is followed successively by reseting period t1, reference voltage t2 and data during writing t3 between the amortization period.At reseting period t1 with between the amortization period in the t2, sweep signal Scan perseverance is low level, and thin film transistor (TFT) T17 is open-minded, and reference voltage Vref is written into by the noble potential of data voltage signal Data.And at data during writing t3, sweep signal Scan still is low level, and by means of the high level of the first control signal CTRL1, data voltage signal D1 is written into.Yet, according to signal sequence shown in Figure 5, during 1H (being t1, t2 and t3 sum), namely, sweep signal Scan be low level during, the during writing of data voltage signal is t3 only, that is to say, during 1H in, be used for writing reference voltage Vref during also having t1 and t2 corresponding, will cause like this pulsewidth of data pulse less, still can't realize the driving of high frame rate, and then cause the problem that Display panel is inhomogeneous.
In order effectively to solve or eliminate the pointed defective of above-mentioned Fig. 1 ~ Fig. 5 and deficiency, the present invention proposes a kind of pixel compensation circuit of novelty.Fig. 6 illustrates the structural representation according to the pixel compensation circuit of one embodiment of the present invention, and Fig. 7 illustrates the sequential synoptic diagram of the key signal of the pixel compensation circuit among Fig. 6.
With reference to Fig. 6, this pixel compensation circuit comprises one first switch T1, a second switch T2, one the 3rd switch T3, one the 4th switch T4, one the 5th switch T5 and an Organic Light Emitting Diode OLED.For example, switch T1 ~ T5 can be thin film transistor (TFT).
Particularly, the source electrode of the first switch T1 is electrically connected to a data-signal Data, and grid is electrically connected to one scan signal Scan.The source electrode of second switch T2 is electrically connected to a reference voltage Vref, and grid is electrically connected to a switching signal SW, and drain electrode is electrically connected to the drain electrode of the first switch T1.The source electrode of the 3rd switch T3 is electrically connected to one first voltage OVDD, and grid is electrically connected to one first control signal CTRL1, comprises one first capacitor C 2 between drain electrode and the source electrode.The source electrode of the 4th switch T4 is electrically connected to the drain electrode of the 3rd switch T3, and grid is electrically connected to the drain electrode of the first switch T1, comprises one second capacitor C 1 between the source electrode of the 4th switch T4 and the grid.The source electrode of the 5th switch T5 is electrically connected to the drain electrode of the 4th switch T4, and the grid of the 5th switch T5 is electrically connected to one second control signal CTRL2.The anode of Organic Light Emitting Diode OLED is electrically connected to the drain electrode of the 5th switch T5, and its negative electrode is electrically connected to a second voltage OVSS.
In one embodiment, switching signal SW is successively corresponding to t2 during a reseting period t1, the voltage compensation and a data during writing t3.Wherein, t2 is adjustable during reseting period t1 and the voltage compensation.As shown in Figure 7, in reseting period t1, switching signal SW is a low level signal, sweep signal Scan is a high level signal, the first control signal CTRL1 is a low level signal, and the second control signal CTRL2 is a high level signal, thereby circuit is carried out reset operation.During voltage compensation in the t2, switching signal SW is a low level signal, and sweep signal Scan is a high level signal, and the first control signal CTRL1 is a high level signal, the second control signal CTRL2 is a low level signal, thereby circuit is carried out the reference voltage write operation.In addition, in the t2, thin film transistor (TFT) T2 is in opening state during reseting period t1 and voltage compensation, thereby reference voltage Vref is written into, and this reference voltage Vref need not to load and write by the high level of data voltage signal Data.In data during writing t3, switching signal SW is a high level signal, sweep signal Scan is a low level signal, the first control signal CTRL1 is a high level signal, and the second control signal CTRL2 is a high level signal, and at this moment, thin film transistor (TFT) T2 turn-offs, thin film transistor (TFT) T1 is open-minded, and data voltage is written into.Fig. 7 and Fig. 3 and Fig. 5 are compared, circuit of the present invention utilize this independently switching signal SW finish writing of reference voltage Vref, and realize writing of data by (be 1H during) between a complete sweep signal low period, so that data pulse has enough pulsewidths to realize the driving of high frame rate, and then improve the inhomogeneous problem of Display panel.
Fig. 8 illustrates the structural representation according to the pixel compensation circuit of another embodiment of the present invention, and Fig. 9 illustrates the sequential synoptic diagram of key signal of the pixel compensation circuit of Fig. 8.
The key distinction of the pixel compensation circuit of Fig. 8 and Fig. 6 is to be, has omitted thin film transistor (TFT) T5 among Fig. 8.Correspondingly, the source electrode of the 4th switch T4 is electrically connected to the drain electrode of the 3rd switch T3.The grid of the 4th switch T4 is electrically connected to the drain electrode of the first switch T1, comprises one second capacitor C 1 between the grid of the 4th switch T4 and source electrode.The anode of Organic Light Emitting Diode OLED is electrically connected to the drain electrode of the 4th switch T4, and its negative electrode is electrically connected to a second voltage OVSS.
Equally, switching signal SW is successively corresponding to t2 during a reseting period t1, the voltage compensation and a data during writing t3.Wherein, t2 is adjustable during reseting period t1 and the voltage compensation.As shown in Figure 9, in reseting period t1, switching signal SW is a low level signal, and sweep signal Scan is a high level signal, and the first control signal CTRL1 is a low level signal, thereby circuit is carried out reset operation.In the t2, switching signal SW is a low level signal during voltage compensation, and sweep signal Scan is a high level signal, and the first control signal CTRL1 is a high level signal, thereby circuit is carried out the reference voltage write operation.In addition, in the t2, thin film transistor (TFT) T2 is in opening state during reseting period t1 and voltage compensation, thereby reference voltage Vref is written into, and this reference voltage Vref need not to load and write by the high level of data voltage signal Data.In data during writing t3, switching signal SW is a high level signal, and sweep signal Scan is a low level signal, and the first control signal CTRL1 is a high level signal, and at this moment, thin film transistor (TFT) T2 turn-offs, and thin film transistor (TFT) T1 is open-minded, and data voltage is written into.In this embodiment, this pixel compensation circuit also utilize this independently switching signal SW finish writing of reference voltage Vref, and realize writing of data by (be 1H during) between a complete sweep signal low period, so that data pulse has enough pulsewidths to realize the driving of high frame rate, and then improve the inhomogeneous problem of Display panel.
Adopt pixel compensation circuit of the present invention, one second switch is set, and its first end is electrically connected to a reference voltage and its control end is electrically connected to a switching signal, thereby utilize this independently switching signal finish writing of reference voltage, and by realizing writing of data between a complete sweep signal low period, so that data pulse has enough pulsewidths to realize the driving of high frame rate, and then improve the inhomogeneous problem of Display panel.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, and in situation without departing from the spirit and scope of the present invention, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replacement all drop in claims limited range of the present invention.
Claims (10)
1. a pixel compensation circuit is characterized in that, described pixel compensation circuit comprises:
One first switch, the first end of described the first switch is electrically connected to a data-signal, and the control end of described the first switch is electrically connected to the one scan signal;
One second switch, the first end of described second switch is electrically connected to a reference voltage, and the control end of described second switch is electrically connected to a switching signal, and the second end of described second switch is electrically connected to the second end of described the first switch;
One the 3rd switch, the first end of described the 3rd switch are electrically connected to one first voltage, and the control end of described the 3rd switch is electrically connected to one first control signal, comprise one first electric capacity between the second end of described the 3rd switch and the first end;
One the 4th switch, the first end of described the 4th switch is electrically connected to the second end of described the 3rd switch, the control end of described the 4th switch is electrically connected to the second end of described the first switch, comprises one second electric capacity between the first end of described the 4th switch and the control end;
One the 5th switch, the first end of described the 5th switch are electrically connected to the second end of described the 4th switch, and the control end of described the 5th switch is electrically connected to one second control signal; And
One Organic Light Emitting Diode, its anode are electrically connected to the second end of described the 5th switch, and its negative electrode is electrically connected to a second voltage.
2. pixel compensation circuit according to claim 1 is characterized in that, described the first switch, second switch, the 3rd switch, the 4th switch and the 5th switch are a thin film transistor (TFT).
3. pixel compensation circuit according to claim 1 is characterized in that, described switching signal comprises during a reseting period, the voltage compensation and a data during writing successively, wherein, is adjustable during described reseting period and the described voltage compensation.
4. pixel compensation circuit according to claim 3, it is characterized in that, in described reseting period, described switching signal is a low level signal, described sweep signal is a high level signal, described the first control signal is a low level signal, and described the second control signal is a high level signal.
5. pixel compensation circuit according to claim 3, it is characterized in that, during described voltage compensation, described switching signal is a low level signal, described sweep signal is a high level signal, described the first control signal is a high level signal, and described the second control signal is a low level signal.
6. pixel compensation circuit according to claim 3, it is characterized in that, in described data during writing, described switching signal is a high level signal, described sweep signal is a low level signal, described the first control signal is a high level signal, and described the second control signal is a high level signal.
7. a pixel compensation circuit is characterized in that, described pixel compensation circuit comprises:
One first switch, the first end of described the first switch is electrically connected to a data-signal, and the control end of described the first switch is electrically connected to the one scan signal;
One second switch, the first end of described second switch is electrically connected to a reference voltage, and the control end of described second switch is electrically connected to a switching signal, and the second end of described second switch is electrically connected to the second end of described the first switch;
One the 3rd switch, the first end of described the 3rd switch are electrically connected to one first voltage, and the control end of described the 3rd switch is electrically connected to one first control signal, comprise one first electric capacity between the second end of described the 3rd switch and the first end;
One the 4th switch, the first end of described the 4th switch is electrically connected to the second end of described the 3rd switch, the control end of described the 4th switch is electrically connected to the second end of described the first switch, comprises one second electric capacity between the first end of described the 4th switch and the control end; And
One Organic Light Emitting Diode, its anode are electrically connected to the second end of described the 4th switch, and its negative electrode is electrically connected to a second voltage.
8. pixel compensation circuit according to claim 7 is characterized in that, described switching signal comprises during a reseting period, the voltage compensation and a data during writing successively, wherein, is adjustable during described reseting period and the described voltage compensation.
9. pixel compensation circuit according to claim 8 is characterized in that, in described reseting period, described switching signal is a low level signal, and described sweep signal is a high level signal, and described the first control signal is a low level signal.
10. pixel compensation circuit according to claim 8 is characterized in that, during described voltage compensation, described switching signal is a low level signal, and described sweep signal is a high level signal, and described the first control signal is a high level signal.
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| CN2012105280052A CN102982766A (en) | 2012-12-10 | 2012-12-10 | Pixel compensating circuit |
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| CN2012105280052A CN102982766A (en) | 2012-12-10 | 2012-12-10 | Pixel compensating circuit |
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| CN103745690A (en) * | 2013-11-12 | 2014-04-23 | 友达光电股份有限公司 | Pixel structure and driving method thereof |
| CN104700783A (en) * | 2015-04-03 | 2015-06-10 | 合肥鑫晟光电科技有限公司 | Pixel driving circuit, driving method thereof, array substrate and display device |
| CN104751799A (en) * | 2015-04-10 | 2015-07-01 | 京东方科技集团股份有限公司 | Pixel circuit, driving method thereof and display device |
| WO2016008232A1 (en) * | 2014-07-17 | 2016-01-21 | 京东方科技集团股份有限公司 | Pixel circuit and display device |
| WO2016141680A1 (en) * | 2015-03-11 | 2016-09-15 | 京东方科技集团股份有限公司 | Pixel compensation circuit, display device and drive method |
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Application publication date: 20130320 |