CN104575384A - Active organic light emitting displayer and drive circuit thereof - Google Patents
Active organic light emitting displayer and drive circuit thereof Download PDFInfo
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Abstract
The invention provides an active organic light emitting displayer and a drive circuit of the active organic light emitting displayer. M pixels in each pixel unit in the active organic light emitting displayer are connected to the same data line, and connected to M+1 scanning lines together. The first pixel in each pixel unit is connected with the first scanning line and the second scanning line in the M+1 scanning lines, the second pixel in each pixel unit is connected to the second scanning line and the third scanning line in the M+1 scanning lines, the Mth pixel in each pixel unit is connected to the Mth scanning line and the M+1th scanning line in the M+1 scanning lines, and the first pixel of all the pixel units on each pixel row and the Mth pixel of all the pixel units on the last pixel row are connected to the same scanning line. On the basis of reducing the number of data lines, normal displaying of all the pixels is guaranteed, and the display effect of the active organic light emitting displayer is improved.
Description
Technical field
The present invention relates to flat display field, be specifically related to a kind of active organic electroluminescent display device and driving circuit thereof.
Background technology
Active organic electroluminescent display device part (AMOLED) is active illuminating device.Compare present main flow flat panel display Thin Film Transistor-LCD (TFT-LCD), displayer has the advantages such as high-contrast, wide viewing angle, low-power consumption, thickness is thinner.
In AMOLED panel, the data-signal of image element circuit is provided by driving chip; Fig. 1 is the driving circuit schematic diagram of traditional active organic electroluminescent display device, and it comprises data driver, scanner driver, pixel etc.Under normal circumstances, as shown in Figure 1, a row pixel needs a data line, and m row pixel then needs m data line.Because the cost of driving chip is higher, and the area of its cost and driving chip is proportional relation, too much data line can take more chip area, thus improve the cost of driving chip, so the structure of a lot of company's meeting usage data signal multiplexing (Mux/Demux) reduces the quantity of data line, thus reduce the area of driving chip, reduce the cost of driving chip.
Fig. 2 is the driving circuit schematic diagram of the active organic electroluminescent display device adopting the multiplexing structure of data-signal, it is on the basis of Fig. 1, add m P type switching transistor (V1, V2 ..., Vm-1, Vm) and 2 switching transistor control signal Sel_1 and Sel_2.This display decreases the quantity of the data line of half data driver, is reduced to m/2 from original m, but under some specific condition, may there is the problem that display is abnormal.As shown in Figure 3, Fig. 3 is the control signal schematic diagram of Fig. 2, is described as follows: in the T1 time period: the initialization of circuit is carried out in pixel 11 and pixel 12 inside; Data-signal on D1 ', D2 ' can be loaded in pixel 11 and pixel 12 respectively.In the t1 time, switching transistor V1 opens, and data line D1 high level signal (5V) is sent on the signal wire D1 ' in viewing area; In the t2 time, switching transistor V2 opens, and data signal line D1 high level signal is sent on the signal wire D2 ' in viewing area.Data-signal on T2 time period: D1 ', D2 ' can be loaded in pixel 21 and pixel 22 respectively.In the t3 time, switching transistor V1 opens, and data line D1 low level (1V) is sent on the signal wire D1 ' in viewing area, and pixel 21 is loaded low level; Now signal wire D2 ' is in vacant state, and due to the existence of stray capacitance, D2 ' can keep the high level state in the T1 time period, and pixel 22 can be applied in high level; In the t4 time, switching transistor V2 opens, and the low level signal of data line D1 is sent on the signal wire D2 ' in viewing area; But due within the t3 time, pixel 22 is applied in high level, so in the t4 time, pixel 22 can be difficult to accept effective low level signal, and it is abnormal that such displayer just there will be display.
Fig. 4 is the driving circuit schematic diagram of the active organic electroluminescent display device adopting the multiplexing structure of data-signal, it is on the basis of Fig. 1, add m P type switching transistor (V1, V2 ..., Vm-1, Vm) and 3 switching transistor control signal Sel_1, Sel_2 and Sel_3.This panel decreases the quantity of the data line of the data driver of 2/3, is reduced to m/3 from original m.Fig. 5 is the control signal schematic diagram of Fig. 4; Sel_1, Sel_2 and Sel_3 are periodic signal, S1, S2 ... Sn is scan control signal; At T1, T2 ... in the Tn time, Sel_1, Sel_2 and Sel_3 are at t1, t2 ... in the time of t3n, signal sequence is low level, make switching transistor T1, T2 ... opening, by data driver signal wire D1 of Tm order ... the signal wire D1 ' be assigned in viewing area of the signal sequence on Dm/3 ... in Dm '.Equally, under some specific condition, because the displayer that exists of stray capacitance also there will be some display extremely.
Summary of the invention
The object of the present invention is to provide a kind of active organic electroluminescent display device and driving circuit thereof, in minimizing data line quantity, while reducing driving chip cost, the display exception because stray capacitance causes can be avoided.
For achieving the above object, the invention provides a kind of driving circuit of active organic electroluminescent display device, described active organic electroluminescent display device comprises a plurality of data lines and multi-strip scanning line and intersects by described data line and sweep trace the multiple pixel cells limited, wherein,
The direction parallel with each sweep trace is row, and the direction parallel with each data line is for arrange;
Often row pixel comprises multiple pixel cell, and each pixel cell comprises M pixel, described M be greater than 1 positive integer;
M pixel in each pixel cell is connected to same data line, and M pixel in each pixel cell is connected to M+1 bar sweep trace altogether;
First pixel of each pixel cell is connected to Article 1 sweep trace in M+1 bar sweep trace and Article 2 sweep trace, second pixel of each pixel cell is connected to Article 2 sweep trace in M+1 bar sweep trace and Article 3 sweep trace, M pixel of each pixel cell is connected to M article of sweep trace in M+1 article of sweep trace and M+1 article of sweep trace, further, often first pixel of all pixel cells is connected same sweep trace with M pixel of all pixel cells in its lastrow pixel in row pixel.
Optionally, in the driving circuit of described active organic electroluminescent display device, described M equals 2; Often in row pixel, every 2 pixels are connected to a data line, and often row pixel is connected to 3 sweep traces; Often in row pixel, first pixel of each pixel cell is connected to Article 1 sweep trace in 3 sweep traces and Article 2 sweep trace, and often in row pixel, second pixel of each pixel cell is connected to Article 2 sweep trace in 3 sweep traces and Article 3 sweep trace; Further, often first pixel of all pixel cells is connected same sweep trace with second pixel of all pixel cells in its lastrow pixel in row pixel.
Optionally, in the driving circuit of described active organic electroluminescent display device, described Article 1 sweep trace, Article 2 sweep trace and Article 3 sweep trace successively arranges chronologically, and three sweep traces useful signal region each other in sequential is mutual not overlapping.
Optionally, in the driving circuit of described active organic electroluminescent display device, described M equals 3; Often in row pixel, every 3 pixels are connected to a data line, and often row pixel is connected to 4 sweep traces; Often in row pixel, first pixel of each pixel cell is connected to Article 1 sweep trace in 4 sweep traces and Article 2 sweep trace, often in row pixel, second pixel of each pixel cell is connected to Article 2 sweep trace in 4 sweep traces and Article 3 sweep trace, and often in row pixel, the 3rd pixel of each pixel cell is connected to Article 3 sweep trace in 4 articles of sweep traces and Article 4 sweep trace; Further, often first pixel of all pixel cells is connected same sweep trace with the 3rd pixel of all pixel cells in its lastrow pixel in row pixel.
Optionally, in the driving circuit of described active organic electroluminescent display device, described Article 1 sweep trace, Article 2 sweep trace, Article 3 sweep trace and Article 4 sweep trace successively arranges chronologically, and four sweep traces useful signal region each other in sequential is mutual not overlapping.
Optionally, in the driving circuit of described active organic electroluminescent display device, described a plurality of data lines is connected to data driver, and described data driver provides data-signal.
Optionally, in the driving circuit of described active organic electroluminescent display device, described multi-strip scanning line is connected to scanner driver, and described scanner driver provides sweep signal.
Optionally, in the driving circuit of described active organic electroluminescent display device, each pixel is all connected to two sweep traces, and under the effect of a sweep trace, the initialization of circuit is carried out in pixel inside, and under the effect of another sweep trace, data line carries out discharge and recharge to pixel.
Accordingly, the present invention also provides a kind of active organic electroluminescent display device, comprises the driving circuit of above-mentioned active organic electroluminescent display device.
Compared with prior art, in the driving circuit of active organic electroluminescent display device provided by the invention, often in row pixel, M pixel of each pixel cell is all connected to same data line, M pixel of each pixel cell is connected to M+1 bar sweep trace altogether, and, often in row pixel, first pixel of all pixel cells is connected same sweep trace with M pixel of all pixel cells in its lastrow pixel, namely, at least every two pixels share a data line, decrease the quantity of data line, thus decrease the area of driving chip, reduce the cost of driving chip, and the pixel of often going all is connected to M+1 bar sweep trace, namely at least three sweep traces are connected, each pixel is connected to two sweep traces respectively, avoid the minimizing of factor data line and the display abnormal problem brought, all pixels are normally shown, improve the display effect of active organic electroluminescent display device.
Accompanying drawing explanation
Fig. 1 is the driving circuit schematic diagram of traditional active organic electroluminescent display device.
Fig. 2 is the driving circuit schematic diagram of the active organic electroluminescent display device adopting the multiplexing structure of data-signal.
Fig. 3 is the control signal schematic diagram of Fig. 2.
Fig. 4 is the driving circuit schematic diagram of the active organic electroluminescent display device adopting the multiplexing structure of data-signal.
Fig. 5 is the control signal schematic diagram of Fig. 4.
The driving circuit schematic diagram of the active organic electroluminescent display device that Fig. 6 provides for the embodiment of the present invention one.
The control signal schematic diagram of the driving circuit that Fig. 7 provides for the embodiment of the present invention one.
The driving circuit schematic diagram of the active organic electroluminescent display device that Fig. 8 provides for the embodiment of the present invention two.
The control signal schematic diagram of the driving circuit that Fig. 9 provides for the embodiment of the present invention two.
Embodiment
For making content of the present invention clearly understandable, below in conjunction with Figure of description, content of the present invention is described further.Certain the present invention is not limited to this specific embodiment, and the general replacement known by those skilled in the art is also encompassed in protection scope of the present invention.
Secondly, the present invention's detailed statement that utilized schematic diagram to carry out, when describing example of the present invention in detail, for convenience of explanation, schematic diagram, should to this as restriction of the present invention not according to general ratio partial enlargement.
The driving circuit of a kind of active organic electroluminescent display device provided by the present invention, described active organic electroluminescent display device comprises a plurality of data lines and multi-strip scanning line and intersects by described data line and sweep trace the multiple pixels limited, often row pixel comprises multiple pixel cell, each pixel cell comprises M pixel, described M be greater than 1 positive integer; M pixel in each pixel cell is connected to same data line, and M pixel in each pixel cell is connected to M+1 bar sweep trace altogether; First pixel of each pixel cell is connected to Article 1 sweep trace in M+1 bar sweep trace and Article 2 sweep trace, second pixel of each pixel cell is connected to Article 2 sweep trace in M+1 bar sweep trace and Article 3 sweep trace, M pixel of each pixel cell is connected to M article of sweep trace in M+1 article of sweep trace and M+1 article of sweep trace, further, often first pixel of all pixel cells is connected same sweep trace with M pixel of all pixel cells in its lastrow pixel in row pixel; Wherein, the direction parallel with each sweep trace is row, and the direction parallel with each data line is for arrange.The Article 1 sweep trace that the first row pixel connects only is connected to first pixel of each pixel cell in the first row pixel, does not share with the pixel of other row.The number of the pixel that each pixel cell comprises is determined according to the actual needs.The present invention, in minimizing data line quantity, while reducing driving chip cost, can avoid the display exception because stray capacitance causes.Be described below by way of specific embodiment.
[embodiment one]
In the present embodiment, M=2, namely described pixel cell comprises 2 pixels.Each pixel cell comprises 2 pixels, and often in row pixel, every 2 pixels are connected to a data line, and often row pixel is connected to 3 sweep traces.Often in row pixel, first pixel of each pixel cell is connected to Article 1 sweep trace in 3 sweep traces and Article 2 sweep trace, and often in row pixel, second pixel of each pixel cell is connected to Article 2 sweep trace in 3 sweep traces and Article 3 sweep trace; Further, often first pixel of all pixel cells is connected same sweep trace with second pixel of all pixel cells in its lastrow pixel in row pixel.That is, often the pixel of odd bits is connected to Article 1 sweep trace and Article 2 sweep trace in row pixel, and the pixel of even bit is connected to Article 2 sweep trace and Article 3 sweep trace, and Article 1 sweep trace is also connected to the pixel of even bit in lastrow pixel simultaneously; The Article 1 sweep trace that the first row pixel connects only is connected to the pixel of odd bits in the first row pixel, does not share with the pixel of other row.
Concrete, please refer to Fig. 6, the driving circuit schematic diagram of its active organic electroluminescent display device provided for the embodiment of the present invention one.As shown in Figure 6, described active organic electroluminescent display device comprise a plurality of data lines D1, D2 ..., D (m/2), multi-strip scanning line S0, S11, S12, S21, S22 ..., S (N-1) 2, Sn1, Sn2, and by data line and sweep trace intersect limit multiple pixel P11, P12 ..., P1 (m-1), P1m, P21, P22 ..., P2 (m-1), P2m, Pn1, Pn2 ..., Pn (m-1), Pnm.With the pixel P21 of the 2nd row, P22 ..., P2 (m-1), P2m be that example is illustrated: each pixel cell 30 comprises 2 pixels; Every 2 pixels are connected to a data line, and such as pixel P21, P22 are connected to data line D1, and pixel P23, P24 are connected to data line D2 ..., pixel P2 (m-1), P2m are connected to data line D (m/2); And this row pixel is connected to 3 sweep traces S12, S21, S22; The pixel P21 of odd bits, P23 ..., P2 (m-1) is connected to Article 1 sweep trace S12 and Article 2 sweep trace S21, the pixel P22 of even bit, P24 ..., P2m is connected to Article 2 sweep trace S21 and Article 3 sweep trace S22, and Article 1 sweep trace S12 be also connected to simultaneously even bit in the first row pixel pixel P12, P14 ..., P1m; The first row pixel connect Article 1 sweep trace S0 be only connected to odd bits in the first row pixel pixel P11, P13 ..., P1 (m-1), do not share with the pixel of other row.Further, described Article 1 sweep trace S12, Article 2 sweep trace S21 and Article 3 sweep trace S22 successively arranges chronologically, and three sweep traces useful signal region each other in sequential is mutual not overlapping.
In sum, according to the driving circuit of entirety, the pixel P11 of scan signal line S0 and the first row, P13 ..., P1 (m-1) connect; Scan signal line S11, S12 pixel all with the first row such as pixel P11, P12 is connected; Scan signal line S12 simultaneously and the pixel P21 of the second row, P23 ..., P2 (m-1) connect; The pixel Pn1 of scan signal line S (n-1) 2 and n-th line, Pn3 ..., Pn (m-1) connect; Scan signal line Sn1, Sn2 pixel all with the n-th line such as pixel Pn1, Pn2 is connected.
In the present embodiment, described a plurality of data lines is connected to data driver 10, and described data driver 10 provides data-signal; Described multi-strip scanning line is connected to scanner driver 20, and described scanner driver 20 provides sweep signal; And each pixel is all connected to two sweep traces, under the effect of a sweep trace, the initialization of circuit is carried out in pixel inside, and under the effect of another sweep trace, data line carries out discharge and recharge to pixel.
The control signal schematic diagram of the driving circuit that Fig. 7 provides for the embodiment of the present invention one, as shown in Figure 7, its job step is as follows:
In the t0 time period: sweep trace S0 is low level, the pixel P11 of the first row, P13 ..., P1 (m-1) the initialization section of image element circuit be strobed, image element circuit carries out initialization.
In the t11 time period: sweep trace S11 is low level, the pixel P11 of the first row, P13 ..., P1 (m-1) the data sampling part of image element circuit be strobed, data line D1 charges to pixel P11, data line D2 charges to pixel P13, data line Dm/2 charges to pixel P1 (m-1), and these pixels normally show.
Meanwhile, the first row pixel P12, P14 ..., P1m the initialization section of image element circuit be strobed, image element circuit carries out initialization.
In the t12 time period: sweep trace S12 is low level, the pixel P12 of the first row, P14 ..., P1m the data sampling part of image element circuit be strobed, data line D1 charges to pixel P12, data line D2 charges to pixel P14, data line Dm/2 charges to pixel P1m, and these pixels normally show.
Meanwhile, the second row pixel P21, P23 ..., P2 (m-1) the initialization section of image element circuit be strobed, image element circuit carries out initialization.
By that analogy, in the tn1 time period: the pixel Pn1 of n-th line, Pn3 ..., Pn (m-1) the data sampling part of image element circuit be strobed, data line D1 charges to pixel Pn1, data line D2 charges to pixel Pn3, data line Dm/2 charges to pixel Pn (m-1), and these pixels normally show.Meanwhile, n-th line pixel Pn2, Pn4 ..., Pnm the initialization section of image element circuit be strobed, image element circuit carries out initialization.
In the tn2 time period: the pixel Pn2 of n-th line, Pn4 ..., Pnm the data sampling part of image element circuit be strobed, data line D1 charges to pixel Pn2, and data line D2 charges to pixel Pn4 ... data line Dm/2 charges to pixel Pnm, and these pixels normally show.
Compared with the driving circuit of traditional active organic electroluminescent display device, the driving circuit of the active organic electroluminescent display device that the present embodiment provides, every two pixels share a data line, decrease the data line of half, thus decrease the area of driving chip, reduce the cost of driving chip, and all pixels can normally show, avoid in conventional art the display adopting the driving circuit of the active organic electroluminescent display device of the multiplexing structure of data-signal to cause abnormal, improve the display effect of active organic electroluminescent display device.
[embodiment two]
On the basis of embodiment one, M=3, namely described pixel cell comprises 3 pixels.Each pixel cell comprises 3 pixels, and often in row pixel, every 3 pixels are connected to a data line, and often row pixel is connected to 4 sweep traces.Often in row pixel, first pixel of each pixel cell is connected to Article 1 sweep trace and Article 2 sweep trace in 4 sweep traces, second pixel is connected to Article 2 sweep trace and Article 3 sweep trace in 4 sweep traces, and the 3rd pixel is connected to Article 3 sweep trace and Article 4 sweep trace in 4 articles of sweep traces.And, often in row pixel, first pixel of all pixel cells is connected same sweep trace with the 3rd pixel of all pixel cells in its lastrow pixel, that is, Article 1 sweep trace is also connected to the 3rd pixel of each pixel cell in lastrow pixel simultaneously.The Article 1 sweep trace that the first row pixel connects only is connected to first pixel of each pixel cell in the first row pixel, does not share with the pixel of other row.Compared with embodiment one, again reduce the quantity of data line, but add the quantity of sweep trace simultaneously.
Concrete, please refer to Fig. 8, the driving circuit schematic diagram of its active organic electroluminescent display device provided for the embodiment of the present invention two.As shown in Figure 8, described active organic electroluminescent display device comprise a plurality of data lines D1, D2 ..., D (m/3), multi-strip scanning line S0, S11, S12, S13, S21, S22, S23 ..., S (N-1) 3, Sn1, Sn2, Sn3, and by data line and sweep trace intersect limit multiple pixel P11, P12, P13 ..., P1 (m-2), P1 (m-1), P1m, P21, P22, P23 ..., P2 (m-2), P2 (m-1), P2m, Pn1, Pn2, Pn3 ..., Pn (m-2), Pn (m-1), Pnm.Equally with pixel P21, the P22 of the 2nd row, P23 ..., P2 (m-2), P2 (m-1), P2m be that example is illustrated: each pixel cell 30 comprises 3 pixels; Every 3 pixels are connected to a data line, such as pixel P21, P22, P23 are connected to data line D1, pixel P24, P25, P26 are connected to data line D2 ..., pixel P2 (m-2), P2 (m-1), P2m are connected to data line D (m/3); And this row pixel is connected to 4 sweep traces S13, S21, S22, S23; First pixel P21 of each pixel cell, P24 ..., P2 (m-2) is connected to Article 1 sweep trace S13 and Article 2 sweep trace S21, second pixel P22, P25 ..., P2 (m-1) is connected to Article 2 sweep trace S21 and Article 3 sweep trace S22,3rd pixel P23, P26 ..., P2m is connected to Article 3 sweep trace S22 and Article 4 sweep trace S23, and Article 1 sweep trace S13 be also connected to simultaneously each pixel cell in the first row pixel the 3rd pixel P13, P16 ..., P1m; The first row pixel connect Article 1 sweep trace S0 be only connected to each pixel cell in the first row pixel first pixel P11, P14 ..., P1 (m-2), do not share with the pixel of other row.Further, described Article 1 sweep trace S13, Article 2 sweep trace S21, Article 3 sweep trace S22 and the 4th sweep trace S23 successively arranges chronologically, and four sweep traces useful signal region each other in sequential is mutual not overlapping.
In sum, according to the driving circuit of entirety, the pixel P11 of scan signal line S0 and the first row, P14 ..., P1 (m-2) connect; Pixel P11, the P12 of scan signal line S11 and the first row, P14, P15 ..., P1 (m-2), P1 (m-1) connect; Pixel P12, the P13 of S12 and the first row, P15, P16 ..., P1 (m-1), P1m connect; The pixel P13 of S13 and the first row, P16 ..., P1m connect; Scan signal line S13 simultaneously and the pixel P21 of the second row, P24 ..., P2 (m-2) connect; The pixel Pn1 of scan signal line S (n-1) 3 and n-th line, Pn4 ..., Pn (m-2) connect; Pixel Pn1, the Pn2 of scan signal line Sn1 and n-th line, n4, Pn5 ..., n (m-2), n (m-1) connect; Pixel Pn2, the Pn3 of scan signal line Sn2 and n-th line, n5, Pn6 ..., Pn (m-1), Pnm connect; The pixel Pn3 of scan signal line Sn3 and n-th line, Pn6 ..., Pnm connect.
In the present embodiment, described a plurality of data lines is connected to data driver 10, and described data driver 10 provides data-signal; Described multi-strip scanning line is connected to scanner driver 20, and described scanner driver 20 provides sweep signal; And each pixel is all connected to two sweep traces, under the effect of a sweep trace, the initialization of circuit is carried out in pixel inside, and under the effect of another sweep trace, data line carries out discharge and recharge to pixel.
The control signal schematic diagram of the driving circuit that Fig. 9 provides for the embodiment of the present invention two, as shown in Figure 7, its job step is as follows:
In the t0 time period: sweep trace S0 is low level, the pixel P11 of the first row, P14 ..., P1 (m-2) the initialization section of image element circuit be strobed, image element circuit carries out initialization.
In the t11 time period: sweep trace S11 is low level, the pixel P11 of the first row, P14 ..., P1 (m-2) the data sampling part of image element circuit be strobed, data line D1 charges to pixel P11, data line D2 charges to image element circuit P14, data line Dm/3 charges to image element circuit P1 (m-2), and these pixels are normally shown.
Meanwhile, the first row pixel P12, P15 ..., P1 (m-1) the initialization section of image element circuit be strobed, image element circuit carries out initialization.
In the t12 time period: sweep trace S12 is low level, the pixel P12 of the first row, P15 ..., P1 (m-1) the data sampling part of image element circuit be strobed, data line D1 charges to pixel P12, data line D2 charges to pixel P15, data line Dm/3 charges to pixel P1 (m-1), and these pixels are normally shown.
Meanwhile, the first row pixel P13, P16 ..., P1m the initialization section of image element circuit be strobed, image element circuit carries out initialization.
In the t13 time period: sweep trace S13 is low level, the pixel P13 of the first row, P16 ..., P1m-1 the data sampling part of image element circuit be strobed, data line D1 charges to pixel P13, data line D2 charges to image element circuit P16, data line Dm/3 charges to image element circuit P1m-1, and these pixels are normally shown.
Meanwhile, the second row pixel P21, P24 ..., P2 (m-2) the initialization section of image element circuit be strobed, image element circuit carries out initialization.
By that analogy, in the tn1 time period: the pixel Pn1 of n-th line, Pn4 ..., Pn (m-2) the data sampling part of image element circuit be strobed, data line D1 charges to pixel Pn1, data line D2 charges to pixel Pn4, data line Dm/3 charges to image element circuit Pn (m-2), and these pixels are normally shown.Meanwhile, n-th line pixel Pn2, Pn5 ..., Pn (m-1) the initialization section of image element circuit be strobed, image element circuit carries out initialization.
In the tn2 time period: the pixel Pn2 of n-th line, Pn5 ..., Pn (m-1) the data sampling part of image element circuit be strobed, data line D1 charges to pixel Pn2, data line D2 charges to pixel Pn5, data line Dm/3 charges to image element circuit Pn (m-1), and then these pixels normally show.Meanwhile, n-th line pixel Pn3, Pn6 ..., Pnm the initialization section of image element circuit be strobed, image element circuit carries out initialization
In the tn3 time period: the pixel Pn3 of n-th line, Pn6 ..., Pnm the data sampling part of image element circuit be strobed, data line D1 charges to pixel Pn3, data line D2 charges to pixel Pn6, data line Dm/3 charges to image element circuit Pnm-1, and these pixels are normally shown.
Compared with the driving circuit of traditional active organic electroluminescent display device, the driving circuit of the active organic electroluminescent display device that the present embodiment provides, every three pixels share a data line, decrease the data line of 2/3rds, thus decrease the area of driving chip, reduce the cost of driving chip, and all pixels can normally show, avoid in conventional art the display adopting the driving circuit of the active organic electroluminescent display device of the multiplexing structure of data-signal to cause abnormal, improve the display effect of active organic electroluminescent display device.
Accordingly, the present invention also provides a kind of active organic electroluminescent display device, comprises the driving circuit of above-mentioned active organic electroluminescent display device.
In sum, in the driving circuit of active organic electroluminescent display device provided by the invention, often in row pixel, each pixel cell is all connected to a data line, and each pixel cell comprises M pixel, M be greater than 1 positive integer, namely at least every two pixels share a data line, decrease the quantity of data line, thus decrease the area of driving chip, reduce the cost of driving chip, and the pixel of often going all is connected to M+1 bar sweep trace, namely at least three sweep traces are connected, each pixel connects two sweep traces respectively, avoid the minimizing of factor data line and the display abnormal problem brought, all pixels are normally shown, improve the display effect of active organic electroluminescent display device.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (9)
1. a driving circuit for active organic electroluminescent display device, is characterized in that, described active organic electroluminescent display device comprises a plurality of data lines and multi-strip scanning line and intersects by described data line and sweep trace the multiple pixel cells limited, wherein,
The direction parallel with each sweep trace is row, and the direction parallel with each data line is for arrange;
Often row pixel comprises multiple pixel cell, and each pixel cell comprises M pixel, described M be greater than 1 positive integer;
M pixel in each pixel cell is connected to same data line, and M pixel in each pixel cell is connected to M+1 bar sweep trace altogether;
First pixel of each pixel cell is connected to Article 1 sweep trace in M+1 bar sweep trace and Article 2 sweep trace, second pixel of each pixel cell is connected to Article 2 sweep trace in M+1 bar sweep trace and Article 3 sweep trace, M pixel of each pixel cell is connected to M article of sweep trace in M+1 article of sweep trace and M+1 article of sweep trace, further, often first pixel of all pixel cells is connected same sweep trace with M pixel of all pixel cells in its lastrow pixel in row pixel.
2. the driving circuit of active organic electroluminescent display device as claimed in claim 1, it is characterized in that, described M equals 2; Often in row pixel, every 2 pixels are connected to a data line, and often row pixel is connected to 3 sweep traces; Often in row pixel, first pixel of each pixel cell is connected to Article 1 sweep trace in 3 sweep traces and Article 2 sweep trace, and often in row pixel, second pixel of each pixel cell is connected to Article 2 sweep trace in 3 sweep traces and Article 3 sweep trace; Further, often first pixel of all pixel cells is connected same sweep trace with second pixel of all pixel cells in its lastrow pixel in row pixel.
3. the driving circuit of active organic electroluminescent display device as claimed in claim 2, it is characterized in that, described Article 1 sweep trace, Article 2 sweep trace and Article 3 sweep trace successively arranges chronologically, and three sweep traces useful signal region each other in sequential is mutual not overlapping.
4. the driving circuit of active organic electroluminescent display device as claimed in claim 1, it is characterized in that, described M equals 3; Often in row pixel, every 3 pixels are connected to a data line, and often row pixel is connected to 4 sweep traces; Often in row pixel, first pixel of each pixel cell is connected to Article 1 sweep trace in 4 sweep traces and Article 2 sweep trace, often in row pixel, second pixel of each pixel cell is connected to Article 2 sweep trace in 4 sweep traces and Article 3 sweep trace, and often in row pixel, the 3rd pixel of each pixel cell is connected to Article 3 sweep trace in 4 articles of sweep traces and Article 4 sweep trace; Further, often first pixel of all pixel cells is connected same sweep trace with the 3rd pixel of all pixel cells in its lastrow pixel in row pixel.
5. the driving circuit of active organic electroluminescent display device as claimed in claim 4, it is characterized in that, described Article 1 sweep trace, Article 2 sweep trace, Article 3 sweep trace and Article 4 sweep trace successively arranges chronologically, and four sweep traces useful signal region each other in sequential is mutual not overlapping.
6. the driving circuit of active organic electroluminescent display device as claimed in claim 1, it is characterized in that, described a plurality of data lines is connected to data driver, and described data driver provides data-signal.
7. the driving circuit of active organic electroluminescent display device as claimed in claim 1, it is characterized in that, described multi-strip scanning line is connected to scanner driver, and described scanner driver provides sweep signal.
8. the driving circuit of active organic electroluminescent display device as claimed in claim 1, it is characterized in that, each pixel is all connected to two sweep traces, and under the effect of a sweep trace, the initialization of circuit is carried out in pixel inside, and under the effect of another sweep trace, data line carries out discharge and recharge to pixel.
9. an active organic electroluminescent display device, is characterized in that, comprises the driving circuit as the active organic electroluminescent display device in claim 1 ~ 8 as described in any one.
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