CN203520833U - Pixel circuit, driving circuit, array substrate and display device - Google Patents
Pixel circuit, driving circuit, array substrate and display device Download PDFInfo
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- CN203520833U CN203520833U CN201320557345.8U CN201320557345U CN203520833U CN 203520833 U CN203520833 U CN 203520833U CN 201320557345 U CN201320557345 U CN 201320557345U CN 203520833 U CN203520833 U CN 203520833U
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Abstract
The embodiment of the utility model provides a pixel circuit, a driving circuit, an array substrate and a display device, and relates to an organic light-emitting diode display technology. When a signal synchronous and reverse with a pre-charge control voltage is inputted to a light-emitting work voltage input end, and the pixel circuit enters a light-emitting stage, a light-emitting work voltage supplies a voltage to the circuit, so that the stable current output of the circuit at the light-emitting stage is guaranteed, and an external voltage input end influencing an aperture opening ratio does not need to be arranged, and accordingly, the aperture opening ratio of an organic light emitting display (OLED) using a current to drive the pixel circuit is increased while the stable current output of a current driving circuit is guaranteed, and the service life of the OLED using the current to drive the pixel circuit is increased.
Description
Technical field
The utility model relates to organic light emitting display technology, relates in particular to a kind of image element circuit, driving circuit, array base palte and display device.
Background technology
Organic light emitting display (Organic Light Emitting Display, OLED) image element circuit type of drive can be divided into current drives and voltage drives, and Fig. 1 is that voltage drives image element circuit, and Fig. 2 is current-driven pixel circuit.At voltage, drive in image element circuit output current I
oLEDformula is:
μ wherein
nfor carrier mobility, C
oXfor gate oxide electric capacity, W/L is transistor breadth length ratio, and Vdata is data voltage, Voled is the luminous operating voltage of the shared OLED of all pixel cells, and Vth is transistorized threshold voltage, for enhancement mode TFT, Vth be on the occasion of, for depletion type TFT, Vth is negative value.Hence one can see that, if the Vth of a pixel changes in time, can cause the output current I of this pixel different time
oLEDdifference, there will be ghost phenomena, also just can not guarantee liquid crystal display stable demonstration in time.The advantage that current drives comparison with voltage drives is output current I
oLEDall the time with input current I
dataequate, in current-driven pixel circuit, even the threshold voltage vt h of pixel along with the time changes, current-driven pixel circuit also can independently be adjusted, and guarantees output current I
oLEDall the time with input current I
dataequate, thereby realize, liquid crystal display spatially evenly shows and upper stable demonstration of time.This is that the course of work due to current-driven pixel circuit can be divided into two stages conventionally, and the first stage is the preliminary filling stage, and subordinate phase is glow phase.In the preliminary filling stage, output current I
oLEDwith input current I
dataequate, the electric capacity in current-driven pixel circuit stores electric charge simultaneously, in glow phase, due to the capacitance stores in current driving circuit electric charge, therefore can guarantee the output current I in current driving circuit
oLEDstill with the output current I in preliminary filling stage
oLEDequate, still with the input current I in preliminary filling stage
dataequate.A kind of concrete current-driven pixel circuit as shown in Figure 3, in circuit, there is one for providing the exterior control voltage Vctrl input end of voltage in glow phase for circuit, be connected to the grid place of a thin film transistor (TFT), and the operating voltage VDD input end of this circuit is connected to the utmost point place in leakage the two poles of the earth, source of this thin film transistor (TFT), the analogous diagram of this circuit as shown in Figure 4, the input of exterior control voltage Vctrl input end and the signal synchronous backward signal for providing the preliminary filling control voltage Vselect input end of voltage to input in the preliminary filling stage for circuit, realization is controlled voltage Vselect in the preliminary filling stage by preliminary filling and is provided voltage for driving circuit, in glow phase, by exterior control voltage Vctrl and operating voltage VDD, by the synthetic voltage of the thin film transistor (TFT) of its connection, provide voltage for circuit, guarantee that current driving circuit exists output current I in glow phase
oLED.Yet the existence of external Vctrl input end can reduce the aperture opening ratio of each pixel, and the aperture opening ratio of pixel is less, and the serviceable life of OLED will be shorter.
Utility model content
The utility model embodiment provides a kind of image element circuit, driving circuit, array base palte and display device, to increase the serviceable life of the OLED that uses current-driven pixel circuit.
An image element circuit, comprising:
The first film transistor, grid connects preliminary filling and controls voltage input end and current input terminal, drain electrode connects preliminary filling and controls voltage input end, current input terminal and luminous operating voltage input end, and luminous operating voltage input end is for inputting the signal of controlling voltage synchronous backward with preliminary filling;
Electric capacity, two ends are connected to the transistorized source electrode of the first film and grid;
Organic Light Emitting Diode, the anodal transistorized drain electrode of the first film, the negative pole connection ground voltage input end of connecting.
A driving circuit, the image element circuit being provided by a plurality of the utility model embodiment forms, and the image element circuit that a plurality of the utility model embodiment provide forms matrix;
In the image element circuit that a plurality of the utility model embodiment provide, be arranged in matrix with the image element circuit of a line, connect same luminous operating voltage input end, connect same preliminary filling and control voltage input end;
The image element circuit that is arranged in the same row of matrix in the image element circuit that a plurality of the utility model embodiment provide, connects same current input terminal.
An array base palte, comprises the driving circuit that the utility model embodiment provides.
A display device, comprises the driving circuit that the utility model embodiment provides.
The utility model embodiment provides a kind of image element circuit, driving circuit, array base palte and display device, by control the signal of voltage synchronous backward at luminous operating voltage input end input and preliminary filling, while making image element circuit enter glow phase, by luminous operating voltage, provide voltage for circuit, guarantee that circuit is in the stable output of the electric current of glow phase, and without the external voltage input end that can reduce aperture opening ratio is set, thereby in the stable output of electric current that guarantees current driving circuit, increased the aperture opening ratio that uses the OLED of current-driven pixel circuit, and then increased the serviceable life of using the OLED of current-driven pixel circuit.
Accompanying drawing explanation
A kind of voltage driving image element circuit figure that Fig. 1 provides for prior art;
A kind of current-driven pixel circuit figure that Fig. 2 provides for prior art;
A kind of preferably current-driven pixel circuit figure that Fig. 3 provides for prior art;
The analogous diagram of the preferably current-driven pixel circuit that Fig. 4 provides for prior art;
One of image element circuit figure that Fig. 5 provides for the utility model embodiment;
Two of the image element circuit figure that Fig. 6 provides for the utility model embodiment;
Three of the image element circuit figure that Fig. 7 provides for the utility model embodiment;
Four of the image element circuit figure that Fig. 8 provides for the utility model embodiment;
Five of the image element circuit figure that Fig. 9 provides for the utility model embodiment;
A kind of driving circuit figure that Figure 10 provides for the utility model embodiment;
A kind of preferably driving circuit figure that Figure 11 provides for the utility model embodiment;
The input voltage analogous diagram that Figure 12 provides for the utility model embodiment;
Figure 13 provides driving circuit preliminary filling stage circuit diagram for the utility model embodiment;
The driving circuit glow phase circuit diagram that Figure 14 provides for the utility model embodiment;
The driving circuit analogous diagram that Figure 15 provides for the utility model embodiment.
Embodiment
The utility model embodiment provides a kind of image element circuit, driving circuit, array base palte and display device, by control the signal of voltage Vselect synchronous backward at luminous operating voltage input end input and preliminary filling, while making image element circuit enter glow phase, by luminous operating voltage, provide voltage for circuit, guarantee that circuit is in the stable output of the electric current of glow phase, and without the external voltage input end that can reduce aperture opening ratio is set, thereby in the stable output of electric current that guarantees current driving circuit, increased the aperture opening ratio that uses the OLED of current-driven pixel circuit, and then increased the serviceable life of using the OLED of current-driven pixel circuit.
As shown in Figure 5, the utility model embodiment provides a kind of image element circuit, comprising:
The first film transistor 501, grid connects preliminary filling and controls voltage Vselect input end and current input terminal, drain electrode connects preliminary filling and controls voltage Vselect input end, current input terminal and luminous operating voltage Vdd input end, and luminous operating voltage Vdd input end is for inputting the signal of controlling voltage Vselect synchronous backward with preliminary filling;
Organic Light Emitting Diode 503, the anodal drain electrode that connects the first film transistor 501, negative pole connects ground voltage Vss input end.
Luminous operating voltage Vdd input end input and preliminary filling are controlled the signal of voltage Vselect synchronous backward, therefore, in the preliminary filling stage, the voltage of circuit is provided by the signal of preliminary filling control voltage Vselect input end input, in glow phase, signal by luminous operating voltage Vdd input provides voltage, thereby has guaranteed to have electric current output at glow phase circuit.And electric capacity 502 has guaranteed that the electric current of exporting in glow phase is identical with the preliminary filling stage, in circuit, do not exist and affect the outer signal of aperture opening ratio end, thereby increased, use the aperture opening ratio of the OLED of current-driven pixel circuit, and then increased the serviceable life of using the OLED of current-driven pixel circuit.
In practical application, because the electric current of the current input terminal input when same a line neighbor is when different, can cause the drain voltage of the first film transistor 501 of neighbor not identical, the current opposite in direction that easily causes direction of current and normal need of work in the driving circuit of the pixel that drain voltage is higher, affect the normal demonstration of OLED, therefore, current opposite in direction for fear of the direction of current in driving circuit in each pixel with normal need of work, can make the drain electrode of the first film transistor 501 of image element circuit be connected with luminous operating voltage Vdd input end by diode, electric current while guaranteeing driving circuit glow phase is by there being driving voltage input end to flow to the drain electrode of the first film transistor 501.
Preferably, in order to facilitate the making of OLED, connect the drain electrode of the first film transistor 501 and the diode of luminous operating voltage Vdd input end and can replace with thin film transistor (TFT), concrete, as shown in Figure 6, the drain electrode of the first film transistor 501 is connected with luminous operating voltage Vdd input end by the second thin film transistor (TFT) 504;
The drain electrode of the first film transistor 501 can be connected with luminous operating voltage VDD input end by the brilliant pipe 504 of the second film, a utmost point in the grid of the second thin film transistor (TFT) 504 and leakage the two poles of the earth, source is connected with luminous operating voltage VDD input end, and another utmost point in leakage the two poles of the earth, source is connected with the drain electrode of the first film transistor 501.
The second thin film transistor (TFT) 504 in Fig. 6 can be regarded a luminous operating voltage Vdd input end of anodal connection as, negative pole connects the diode of the drain electrode of the first film transistor 501, thereby guarantees that in driving circuit, sense of current is by luminous operating voltage Vdd input end, to be flowed to the drain electrode of the first film transistor 501.
Certainly, those skilled in the art also can adopt other feasible patterns to avoid the electric current difference due to the current input terminal input of same a line neighbor, and affects the normal demonstration of OLED, only provides a kind of preferably implementation herein, no longer one by one narration.
Further, if the driving circuit of each pixel need to drive line by line, after previous row completes preliminary filling, could carry out preliminary filling to next line, the utility model embodiment also provides a kind of mode driving line by line that preferably realizes.Can make grid and/or the drain electrode of the first film transistor 501 be connected with preliminary filling control voltage Vselect input end and current input terminal by the thin film transistor (TFT) as switch, as the thin film transistor (TFT) of switch, open when the high level, when low level, close, thereby by the preliminary filling of each row image element circuit, control voltage Vselect input end and input different signals, realize line by line and driving.
Concrete, can make the grid of the first film transistor 501 be connected with preliminary filling control voltage Vselect input end and current input terminal by the thin film transistor (TFT) as switch, as shown in Figure 7, the grid of the first film transistor 501 controls voltage Vselect input end by the thin film transistor (TFT) as switch with preliminary filling and current input terminal is connected, and is specially:
The grid of the first film transistor 501 controls voltage Vselect input end by the 3rd thin film transistor (TFT) 505 with preliminary filling and current input terminal is connected, the grid of the 3rd thin film transistor (TFT) 505 is controlled voltage Vselect input end with preliminary filling and is connected, a utmost point in leakage the two poles of the earth, source is connected with the grid of the first film transistor 501, and another utmost point in leakage the two poles of the earth, source is connected with current input terminal;
Further, can make the drain electrode of the first film transistor 501 also by the thin film transistor (TFT) as switch, be connected with preliminary filling control voltage Vselect input end and current input terminal, as shown in Figure 8, the drain electrode of the first film transistor 501 controls voltage Vselect input end by the thin film transistor (TFT) as switch with preliminary filling and current input terminal is connected, and is specially:
The transistorized drain electrode of the first film controls voltage Vselect input end by the 4th thin film transistor (TFT) 506 with preliminary filling and current input terminal is connected, the grid of the 4th thin film transistor (TFT) 506 is controlled voltage Vselect input end with preliminary filling and is connected, a utmost point in leakage the two poles of the earth, source is connected with the drain electrode of the first film transistor 501, and another utmost point in leakage the two poles of the earth, source is connected with current input terminal.
Certainly, those skilled in the art also can adopt other feasible patterns to realize the driving line by line that drives each image element circuit, and a kind of preferably implementation is only provided herein, no longer one by one narration.
As shown in Figure 9, the utility model embodiment provides a kind of preferably image element circuit, comprising:
The first film transistor 501, the second thin film transistor (TFT) 504, the three thin film transistor (TFT) 505, the four thin film transistor (TFT)s 506, also comprise electric capacity 502 and Organic Light Emitting Diode 503.
Wherein, the two ends of electric capacity 502 are connected to source electrode and the grid of the first film transistor 501;
The positive pole of Organic Light Emitting Diode 503 connects the drain electrode of the first film transistor 501, and negative pole connects ground voltage Vss input end;
A utmost point in the grid of the second thin film transistor (TFT) 504 and leakage the two poles of the earth, source is connected with luminous operating voltage Vdd input end, and another utmost point in leakage the two poles of the earth, source is connected with the drain electrode of the first film transistor 501.
The grid of the 3rd thin film transistor (TFT) 505 is controlled voltage Vselect input end with preliminary filling and is connected, and the utmost point in leakage the two poles of the earth, source is connected with the grid of the first film transistor 501, and another utmost point in leakage the two poles of the earth, source is connected with current input terminal;
The grid of the 4th thin film transistor (TFT) 506 is controlled voltage Vselect input end with preliminary filling and is connected, and the utmost point in leakage the two poles of the earth, source is connected with the drain electrode of the first film transistor 501, and another utmost point in leakage the two poles of the earth, source is connected with current input terminal.
Wherein, what luminous operating voltage Vdd input end was inputted is to control the signal of voltage Vselect synchronous backward with preliminary filling, when image element circuit enters preliminary filling during the stage, by preliminary filling, control voltage Vselect and provide voltage for circuit, when image element circuit enters glow phase, by luminous operating voltage Vdd, provide voltage for circuit, guarantee that circuit is in the electric current output of preliminary filling stage and glow phase, and do not affect the external voltage input end of aperture opening ratio, thereby increased the aperture opening ratio that uses the OLED of current-driven pixel circuit, and then increased the serviceable life of using the OLED of current-driven pixel circuit.The second thin film transistor (TFT) 504 can be regarded a luminous operating voltage Vdd input end of anodal connection as, negative pole connects the diode of the drain electrode of the first film transistor 501, thereby in assurance driving circuit, sense of current is by luminous operating voltage Vdd input end, to be flowed to the drain electrode of the first film transistor 501, the 3rd thin film transistor (TFT) 505 and the 4th thin film transistor (TFT) 506 are the thin film transistor (TFT) as switch, the 3rd thin film transistor (TFT) 505 and the 4th thin film transistor (TFT) 506 are opened when high level, when low level, close, thereby by the preliminary filling of each row image element circuit, control voltage Vselect input end and input different signals, realize line by line and driving.
The utility model embodiment also provides a kind of driving circuit, and this driving circuit forms for the image element circuit being provided by a plurality of the utility model embodiment, and the image element circuit that a plurality of the utility model embodiment provide forms matrix;
In the image element circuit that a plurality of the utility model embodiment provide, be arranged in matrix with the image element circuit of a line, connect same luminous operating voltage input end, connect same preliminary filling and control voltage input end;
The image element circuit that is arranged in the same row of matrix in the image element circuit that a plurality of the utility model embodiment provide, connects same current input terminal.
Preferably, as shown in figure 10, the image element circuit that is arranged in matrix first row in the image element circuit that a plurality of the utility model embodiment provide comprises the 5th thin film transistor (TFT) 507;
Leakage the two poles of the earth, source of the 5th thin film transistor (TFT) 507 connect respectively luminous operating voltage Vdd input end and operating voltage VDD input end, grid connects signal input part Input, signal input part Input is for inputting the signal of controlling voltage Vselect synchronous backward with preliminary filling, and the 5th thin film transistor (TFT) 507 is N-type thin film transistor (TFT).
The image element circuit that matrix first row is provided in the image element circuit providing at a plurality of the utility model embodiment arranges the 5th thin film transistor (TFT) 507, by the grid input at the 5th thin film transistor (TFT) 507 and preliminary filling, control the signal of voltage Vselect synchronous backward, at leakage the two poles of the earth, source, connect respectively luminous operating voltage Vdd input end and operating voltage VDD input end,, a utmost point output signal that connects luminous operating voltage Vdd input end in the 5th thin film transistor (TFT) 507 leakage the two poles of the earth, source is luminous operating voltage Vdd input end to the signal of each image element circuit input.At operating voltage VDD input end and preliminary filling, control after voltage Vselect input end input signal, a utmost point output signal that connects luminous operating voltage Vdd input end in the 5th thin film transistor (TFT) 507 leakage the two poles of the earth, source is to control the signal of voltage Vselect synchronous backward with preliminary filling, thereby guarantees that luminous operating voltage Vdd input end is to control the signal of voltage Vselect synchronous backward with preliminary filling to each image element circuit input.
Certainly, those skilled in the art can adopt other feasible modes to guarantee that luminous operating voltage Vdd input end is to control the signal of voltage Vselect synchronous backward with preliminary filling to the input of each image element circuit, only provide a kind of preferably implementation herein, no longer one by one narration.
As shown in figure 11, the utility model embodiment provides a kind of preferably driving circuit, and this driving circuit is for to be comprised of a plurality of image element circuits, and a plurality of image element circuits form matrix;
Wherein, image element circuit comprises:
The first film transistor 501, the second thin film transistor (TFT) 504, the three thin film transistor (TFT) 505, the four thin film transistor (TFT) 506, the five thin film transistor (TFT)s 507, also comprise electric capacity 502 and Organic Light Emitting Diode 503.
Wherein, the two ends of electric capacity 502 are connected to source electrode and the grid of the first film transistor 501;
The first film transistor 501, the second thin film transistor (TFT) 504, the three thin film transistor (TFT) 505, the four thin film transistor (TFT) 506, the five thin film transistor (TFT)s 507, also comprise electric capacity 502 and Organic Light Emitting Diode 503.
Wherein, the two ends of electric capacity 502 are connected to source electrode and the grid of the first film transistor 501;
The positive pole of Organic Light Emitting Diode 503 connects the drain electrode of the first film transistor 501, and negative pole connects ground voltage Vss input end;
A utmost point in the grid of the second thin film transistor (TFT) 504 and leakage the two poles of the earth, source is connected with luminous operating voltage Vdd input end, and another utmost point in leakage the two poles of the earth, source is connected with the drain electrode of the first film transistor 501.
The grid of the 3rd thin film transistor (TFT) 505 is controlled voltage Vselect input end with preliminary filling and is connected, and the utmost point in leakage the two poles of the earth, source is connected with the grid of the first film transistor 501, and another utmost point in leakage the two poles of the earth, source is connected with current input terminal;
The grid of the 4th thin film transistor (TFT) 506 is controlled voltage Vselect input end with preliminary filling and is connected, and the utmost point in leakage the two poles of the earth, source is connected with the drain electrode of the first film transistor 501, and another utmost point in leakage the two poles of the earth, source is connected with current input terminal.
The leakage the two poles of the earth, source of the 5th thin film transistor (TFT) 507 that are arranged in the image element circuit of matrix first row in a plurality of image element circuits connect respectively luminous operating voltage Vdd input end and operating voltage VDD input end.Grid connects signal input part Input, and signal input part Input is for inputting the signal of controlling voltage Vselect synchronous backward with preliminary filling, and the 5th thin film transistor (TFT) 507 is N-type thin film transistor (TFT).Preferably, as shown in figure 12, can make the signal of operating voltage VDD input end input also contrary with the signal of preliminary filling control voltage Vselect control end input.
In a plurality of image element circuits, be arranged in matrix with the image element circuit of a line, connect same luminous operating voltage input end, connect same preliminary filling and control voltage input end;
In a plurality of image element circuits, be arranged in the image element circuit of the same row of matrix, connect same current input terminal.
Lower mask body is introduced the principle of work of driving circuit shown in Figure 11.As shown in figure 13, in the preliminary filling stage, it is high level that preliminary filling is controlled voltage Vselect, luminous operating voltage Vdd is low level, and now the 5th thin film transistor (TFT) 507 and the second thin film transistor (TFT) 504 are closed, and the 3rd thin film transistor (TFT) 505 and the 4th thin film transistor (TFT) 506 are opened, the grid of the first film transistor 501 (A point) and drain electrode (B point) voltage equate, Vds>Vgs-Vth, wherein Vds is source-drain electrode voltage, Vgs is source grid voltage.Now the first film transistor 501 is in saturation region, and electric current I data flows into the first film transistor 501 by the 4th thin film transistor (TFT) 506, and electric capacity 502 stores electric charge to maintain the source grid voltage Vgs of the first film transistor 501, now output current I
oLED=Idata.
As shown in figure 14, in glow phase, it is low level that preliminary filling is controlled voltage Vselect, and luminous operating voltage Vdd is also high level, now the 3rd thin film transistor (TFT) 505 and the 4th thin film transistor (TFT) 506 are closed, and the second thin film transistor (TFT) 504 and the 5th thin film transistor (TFT) 507 are opened.The drain electrode of the first film transistor 501 (B point) is high level, and the first film transistor 501 still remains on saturation region, numerical value when now transistorized output current enters saturation region by maintenance, so the output current I of glow phase
oLEDbe still the Idata in preliminary filling stage, output current remains unchanged.
Hence one can see that, the output current of the driving circuit shown in Figure 11 is only relevant with input current, irrelevant with threshold voltage vt h, has therefore substantially eliminated threshold voltage heterogeneity to the impact showing, outputting current steadily, is easy to realize high brightness and the high resolving power showing.
Figure 15 is the simulation result to the driving circuit shown in Figure 11, and what this emulation showed is two cycles of single sub-pixel work.In first cycle, the electric current writing pixel of 2uA, in second period the electric current writing pixel of 3uA.From oscillogram, can obviously see, after circuit is carried out to preliminary filling, the output current IO LED of pixel has followed the variation of input current Idata well.
The utility model embodiment also provides a kind of array base palte, comprises the driving circuit that the utility model embodiment provides.
The utility model embodiment also provides a kind of display device, comprises the driving circuit that the utility model embodiment provides.
The utility model embodiment provides a kind of image element circuit, driving circuit, array base palte and display device, by control the signal of voltage Vselect synchronous backward at luminous operating voltage Vdd input end input and preliminary filling, while making image element circuit enter glow phase, by luminous operating voltage Vdd, provide voltage for circuit, guarantee that circuit is in the electric current output of glow phase, and do not affect the external voltage input end of aperture opening ratio, thereby in the stable output of electric current that guarantees current driving circuit, increased the aperture opening ratio that uses the OLED of current-driven pixel circuit, and then increased the serviceable life of using the OLED of current-driven pixel circuit.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (10)
1. an image element circuit, is characterized in that, comprising:
The first film transistor, grid connects preliminary filling and controls voltage input end and current input terminal, drain electrode connects described preliminary filling and controls voltage input end, described current input terminal and luminous operating voltage input end, and described luminous operating voltage input end is for inputting the signal of controlling voltage synchronous backward with described preliminary filling;
Electric capacity, two ends are connected to the transistorized source electrode of described the first film and grid;
Organic Light Emitting Diode, the anodal transistorized drain electrode of described the first film, the negative pole connection ground voltage input end of connecting.
2. circuit as claimed in claim 1, is characterized in that, the transistorized drain electrode of described the first film is connected with described luminous operating voltage input end by diode.
3. circuit as claimed in claim 1, is characterized in that, the transistorized drain electrode of described the first film is connected with described luminous operating voltage input end by the second thin film transistor (TFT);
The transistorized drain electrode of described the first film is connected with described luminous operating voltage input end by the second thin film transistor (TFT), a utmost point in the grid of described the second thin film transistor (TFT) and leakage the two poles of the earth, source is connected with described luminous operating voltage input end, and another utmost point in leakage the two poles of the earth, source is connected with the transistorized drain electrode of described the first film.
4. circuit as claimed in claim 1, is characterized in that, the transistorized grid of described the first film and/or drain electrode control voltage input end by the thin film transistor (TFT) as switch with preliminary filling and current input terminal is connected.
5. circuit as claimed in claim 4, is characterized in that, the transistorized grid of described the first film and/or drain electrode control voltage input end by the thin film transistor (TFT) as switch with preliminary filling and current input terminal is connected, and is specially:
The transistorized grid of described the first film controls voltage input end by the 3rd thin film transistor (TFT) with described preliminary filling and described current input terminal is connected, the grid of described the 3rd thin film transistor (TFT) is controlled voltage input end with described preliminary filling and is connected, a utmost point in leakage the two poles of the earth, source is connected with the transistorized grid of described the first film, and another utmost point in leakage the two poles of the earth, source is connected with described current input terminal; Or
The transistorized drain electrode of described the first film controls voltage input end by the 4th thin film transistor (TFT) with described preliminary filling and described current input terminal is connected, the grid of described the 4th thin film transistor (TFT) is controlled voltage input end with described preliminary filling and is connected, a utmost point in leakage the two poles of the earth, source is connected with the transistorized drain electrode of described the first film, and another utmost point in leakage the two poles of the earth, source is connected with described current input terminal.
6. circuit as claimed in claim 4, is characterized in that, the transistorized grid of described the first film and/or drain electrode control voltage input end by the thin film transistor (TFT) as switch with preliminary filling and current input terminal is connected, and specifically comprises:
The transistorized grid of described the first film controls voltage input end by the 3rd thin film transistor (TFT) with described preliminary filling and described current input terminal is connected, the grid of described the 3rd thin film transistor (TFT) is controlled voltage input end with described preliminary filling and is connected, a utmost point in leakage the two poles of the earth, source is connected with the transistorized grid of described the first film, and another utmost point in leakage the two poles of the earth, source is connected with described current input terminal;
The transistorized drain electrode of described the first film controls voltage input end by the 4th thin film transistor (TFT) with described preliminary filling and described current input terminal is connected, the grid of described the 4th thin film transistor (TFT) is controlled voltage input end with described preliminary filling and is connected, a utmost point in leakage the two poles of the earth, source is connected with the transistorized drain electrode of described the first film, and another utmost point in leakage the two poles of the earth, source is connected with described current input terminal.
7. a driving circuit, is characterized in that, described driving circuit is comprised of a plurality of image element circuits as described in as arbitrary in claim 1-6, and described a plurality of image element circuits as described in as arbitrary in claim 1-6 form matrix;
As described in being arranged in described a plurality of image element circuit as described in as arbitrary in claim 1-6, matrix, with the image element circuit of a line, connects same luminous operating voltage input end, connects same preliminary filling and controls voltage input end;
As described in being arranged in described a plurality of image element circuit as described in as arbitrary in claim 1-6, the image element circuit of the same row of matrix, connects same current input terminal.
8. driving circuit as claimed in claim 7, is characterized in that, as described in being arranged in described a plurality of image element circuits as described in as arbitrary in claim 1-6, the image element circuit of matrix first row comprises the 5th thin film transistor (TFT);
Leakage the two poles of the earth, source of described the 5th thin film transistor (TFT) connect respectively described luminous operating voltage input end and operating voltage input end, grid connects signal input part, described signal input part is for inputting the signal of controlling voltage synchronous backward with described preliminary filling, and described the 5th thin film transistor (TFT) is N-type thin film transistor (TFT).
9. an array base palte, is characterized in that, comprises driving circuit as claimed in claim 7 or 8.
10. a display device, is characterized in that, comprises driving circuit as claimed in claim 7 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320557345.8U CN203520833U (en) | 2013-09-09 | 2013-09-09 | Pixel circuit, driving circuit, array substrate and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320557345.8U CN203520833U (en) | 2013-09-09 | 2013-09-09 | Pixel circuit, driving circuit, array substrate and display device |
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| CN201320557345.8U Withdrawn - After Issue CN203520833U (en) | 2013-09-09 | 2013-09-09 | Pixel circuit, driving circuit, array substrate and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474028A (en) * | 2013-09-09 | 2013-12-25 | 京东方科技集团股份有限公司 | Pixel circuit, drive circuit, array substrate and display device |
| CN107909967A (en) * | 2017-12-11 | 2018-04-13 | 成都晶砂科技有限公司 | A kind of driving method and drive circuit of optional driving tube working region |
-
2013
- 2013-09-09 CN CN201320557345.8U patent/CN203520833U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474028A (en) * | 2013-09-09 | 2013-12-25 | 京东方科技集团股份有限公司 | Pixel circuit, drive circuit, array substrate and display device |
| US10276097B2 (en) | 2013-09-09 | 2019-04-30 | Boe Technology Group Co., Ltd. | Pixel circuit, driving circuit, array substrate and display device |
| CN107909967A (en) * | 2017-12-11 | 2018-04-13 | 成都晶砂科技有限公司 | A kind of driving method and drive circuit of optional driving tube working region |
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