CN102222476A - Pixel driving device, pixel driving method and liquid display device comprising pixel driving device - Google Patents
Pixel driving device, pixel driving method and liquid display device comprising pixel driving device Download PDFInfo
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- CN102222476A CN102222476A CN 201010151856 CN201010151856A CN102222476A CN 102222476 A CN102222476 A CN 102222476A CN 201010151856 CN201010151856 CN 201010151856 CN 201010151856 A CN201010151856 A CN 201010151856A CN 102222476 A CN102222476 A CN 102222476A
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Abstract
The invention relates to a pixel driving device, a pixel driving method and a liquid display device comprising the pixel driving device. The liquid display device comprises a liquid display panel and a pixel driving device, wherein the pixel driving device can selectively output a first driving signal or a second driving signal with different polarity ranking sequence to the liquid display panel according to the structure of a display unit in the liquid display panel.
Description
Technical field
The invention relates to the image element driving method of a kind of pixel driving device and display panels; Particularly about a kind of image element driving method that is used for the pixel driving device of liquid crystal indicator and drives display panels.
Background technology
Display panels has been the main flow of display technique on the existing market, and wherein display panels is to be used for the consumer electronic product that liquid crystal indicator and TV, notebook computer, DPF and mobile phone etc. comprise display panels in a large number.
Along with the liquid crystal indicator resolution is more and more higher, pixel that its display panels comprised (Pixel) and corresponding source drive element (Source Driver IC) quantity also get more and more.Under traditional liquid crystal panel framework, has 1 pair 1 framework between pixel and the source electrode line; In other words, single pixel is to be electrically connected on single source electrode line (Source Line); Therefore under the constant situation of display panels area, the increase of resolution will make source electrode line occupy increasing usable area, also the difficulty that reduces the usable area of other elements simultaneously and cause element to be provided with.In order to improve above-mentioned problem, industry develops the display panels framework that the plain shared single source electrode line of a kind of double image, wherein Figure 1 shows that the synoptic diagram of above-mentioned display panels 10 frameworks.As shown in Figure 1, display panels 10 comprises plural odd pixel 20, plural even pixel 21, source electrode line S1, S2, S3, gate line G1, G2, G3, G4 and source drive element 30, and wherein source drive element 30 is to be electrically connected on source electrode line S1, S2, S3 with output drive signal.In addition, odd pixel 20 and another even pixel 21 be connected in simultaneously those source electrode lines S1, S2, S3 one of them and be electrically connected on different gate line respectively.Gate line G1, G2, G3, G4 will in the different periods respectively output signal open odd pixel 20 and even pixel 21 one of them, drive liquid crystal in this pixel for corresponding source electrode line.Therefore under the described framework of Fig. 1, in the same period, only have a pixel among corresponding odd pixel 20 and the even pixel 21 and accept to transmit and next drive signal from source drive element 30.
In odd pixel 20 and the even pixel 21 comprise liquid crystal and need its driving voltage to supply with the mode cross polarity that exchanges, otherwise the characteristic of liquid crystal will be subjected to irreversible destruction.For this reason, when a picture, the driving voltage of receiving as pixel is to be positive polarity, and then when next picture showed, the driving voltage that pixel is received was necessary for negative polarity.In addition, in reversal of poles, the absolute value of the driving voltage of above-mentioned two opposite polarities must one be shown the normal operation characteristic of avoiding destroying liquid crystal.In addition, in above-mentioned driving voltage polarity reversal, the pixel of display panels is inevasible will to present the visual effect of a kind of film flicker (Flicker) to a certain extent, also therefore have influence on user's overall image impression.
Fig. 2 A is depicted as the polarity Pareto diagram of 30 output drive signals of source drive element shown in Figure 1.Having under the display panels of 1 pair 1 framework and 2 pairs 1 frameworks the polarity after receiving Fig. 2 A drive signal shown in Fig. 2 B and Fig. 2 C respectively arranges.Shown in Fig. 2 B, because each pixel is corresponding to a source electrode line, so the display panels 10 final polarity arrangements that present are to arrange corresponding to the polarity of Fig. 2 A.In addition, each pixel with its around pixel opposite polarity is arranged, so the polarity that those pixels have single-point conversion (One Dot Inversion) is on the whole arranged and existing least significantly film flicker phenomenon (Flicker).
Shown in Fig. 2 C, because odd pixel 20 is that gate G1, G2 open in different time with even pixel 21, even therefore receive to have the drive signal that identical polar is arranged, the polarity of drive signal that pixel is received is with different among Fig. 2 B and Fig. 2 C.In addition, the arrangement of the polarity of pixel shown in Fig. 2 C is to switch (1+2 Line Dot Inversion) in whole row's mode; Thus, the film flicker phenomenon that Fig. 2 C pixel is presented will be very easy to be found by human eye, also therefore bring bad visual effect for the user.
By top narration and graphic learning, the display panels 10 of different frameworks may present different film flicker phenomenons and vision impression when receiving the drive signal of tool identical polar arrangement.Driving element as the special special design specialized of display panels for different frameworks can address the above problem, but the cost that this solution also will increase research and development simultaneously and make.Therefore how arranging in the polarity of using same driving element to reach single-point conversion (One Dot Inversion) under the situation of different display panels, is the target that present industry makes great efforts to reach.
Summary of the invention
One of purpose of the present invention is to provide a kind of pixel driving device and image element driving method, can be used for driving the display panels with different frameworks and produces the reversal result and the corresponding visual effect of single-point conversion (One Dot Inversion).
Another object of the present invention is to provide a kind of liquid crystal indicator that comprises the display panels of pixel driving device of the present invention and comprise this display panels, in order to reversal result and the corresponding visual effect that produces single-point conversion (One DotInversion).
Pixel driving device of the present invention comprises polar signal generator, polarity selector, driving signal generator, and wherein polarity selector is to be connected to polar signal generator and driving signal generator.Polarity selector is respectively from polar signal generator and extraneous first polar signal and second polar signal of receiving, and wherein polarity selector is that one of them transfers to driving signal generator with first polar signal and second polar signal according to a switching signal.Driving signal generator will produce according to the polar signal of receiving has the plural display unit of the drive signal of corresponding polarity to display panels, so that the polarity of drive signal that each display unit is received is different from the drive signal polarity of adjacent display cell.In other words, pixel driving device will make display panels finally have the reversal result of single-point conversion (One Dot Inversion) and least tangible film flicker visual effect according to the polarity that polar signal is adjusted drive signal.
Description of drawings
Figure 1 shows that the synoptic diagram of known display panels;
Fig. 2 A is depicted as the polarity Pareto diagram of source drive element shown in Figure 1 institute output drive signal;
Be respectively different framework display panels shown in Fig. 2 B and Fig. 2 C in the polarity arrangement of receiving that identical drive signals presents;
Figure 3 shows that the synoptic diagram of liquid crystal indicator of the present invention;
Fig. 4 A is depicted as the polarity of pixel driving device institute output drive signal and arranges synoptic diagram;
It shown in Fig. 4 B polarity Pareto diagram for drive signal that display panels shown in Figure 3 is received;
Figure 5 shows that the alternate embodiment of liquid crystal indicator shown in Figure 3;
Fig. 6 A is depicted as the polarity Pareto diagram of pixel driving device institute output drive signal;
Fig. 6 B be depicted as display panels shown in Figure 5 the actual polarity Pareto diagram of receiving drive signal;
Figure 7 shows that the calcspar of Fig. 3 and pixel driving device shown in Figure 5;
Figure 8 shows that the calcspar of driving signal generator shown in Figure 7 and amplifier;
Figure 9 shows that the alternate embodiment of driving signal generator shown in Figure 8; And
Figure 10 shows that the image element driving method of display panels of the present invention.
The main element symbol description
100 liquid crystal indicators, 353 switching device shifters
210 odd number display units, 360 amplifiers
220 even number display units, 25 361 odd number amplifiers
300 pixel driving devices, 362 even number amplifiers
310 odd number source electrode lines, 400 switching signal generators
320 even number source electrode lines, 500 signal sequences row
330 polar signal generators, 510 first time slots
340 polarity selectors, 30 520 second time slots
350 driving signal generators 530 the 3rd time slot
351 odd number signal output sources 540 the 4th time slot
352 even signal output source G1G2G3G4 gate lines
Embodiment
The present invention discloses the image element driving method of display panels, the pixel driving device that uses this driving method and the liquid crystal indicator that comprises this pixel driving device.Pixel driving device has produced image with the pixel that output drive signal drives in the display panels, and the pixel driving device polarity of output signal of will regularly reversing wherein is to reduce image to flicker (Flicker) effect that human eye was produced.In addition, drive signal has driving order, and wherein pixel driving device will have the drive signal of different driving order according to the framework selectivity output of display panels.
Figure 3 shows that the synoptic diagram of liquid crystal indicator.As shown in Figure 3, liquid crystal indicator 100 comprises display panels and pixel driving device 300, and wherein display panels comprises plural odd number display unit 210 and the complex pair digital display shows unit 220.Pixel driving device 300 comprises plural odd number source electrode line 310 and plural even number source electrode line 320, be electrically connected on the odd number display unit 210 and the even number display unit 220 of display panels respectively, drive signal is transferred to odd number display unit 210 and even number display unit 220.
In the embodiment shown in fig. 3, odd number display unit 210 and even number display unit 220 are to be electrically connected on same source electrode line 310,320 simultaneously in the display panels, and wherein odd number display unit and even number display unit are to be electrically connected on odd number gate line G1 and even number gate line G2 respectively.Odd number gate line G1 and even number gate line G2 are in different time slot transmission signals to odd number display unit 210 and the gate of even number display unit 220; In other words, odd number display unit 210 and even number display unit 220 are to open to be received from the drive signal that the odd number source electrode line is transmitted in different time slots.Therefore, in the present embodiment, single source electrode line the 310, the 320th is simultaneously corresponding to an odd number display unit 210 and an even number display unit 220.
In addition, as shown in Figure 3, liquid crystal indicator comprises a switching signal generator 400, is electrically connected on pixel driving device 300 and exports a switching signal to pixel driving device 300.In the present embodiment, switching signal is a digital signal and switching signal generator 400 will be set the not switching signal of coordination standard of output device according to the structure of display panels.When single source electrode line the 310, the 320th, during corresponding to an odd number display unit 210 and an even number display unit 220, switching signal will be exported the switching signal of first standard; When single source electrode line the 310, the 320th, corresponding to single display unit 210,220 o'clock, switching signal was with the switching signal of second standard of output device.In other words, the position standard of switching signal is the display unit framework that is used to represent display panels.In the present embodiment, first standard and second standard are respectively to be high levels and low level, but are not limited thereto.
Fig. 4 A is depicted as the polarity of 300 output drive signals of pixel driving device and arranges synoptic diagram, and wherein positive pole in each grid and negative pole shown in Fig. 4 A are to be the polarity of drive signal in different time slots (Time Slot).Shown in Fig. 4 A, pixel driving device 300 is respectively at output drive signal in the independent time slots such as first time slot 510, second time slot 520, the 3rd time slot 530, the 4th time slot 540, and wherein above-mentioned four time slots are formed round-robin signal sequence row 500.In addition, the odd number display unit 210 of the display panels of present embodiment and even number display unit 220 are to be electrically connected on odd number source electrode line 310 simultaneously; And switching signal generator 400 shown in Figure 3 will be according to the switching signal of first standard of said structure output device.After the switching signal of receiving first standard of tool, the polarity that 300 output drive signals of pixel driving device are had in first time slot 510 and the 4th time slot 540 is to be different from the polarity that second time slot 520 and the 3rd time slot 530 are had.In other words, drive signal is identical with the polarity of the 4th time slot 540 in first time slot 510, and same drive signal is identical in the polarity of second time slot 520 and the 3rd time slot 530.
Be the polarity Pareto diagram for drive signal that display panels shown in Figure 3 is received shown in Fig. 4 B, wherein positive pole in each grid and negative pole shown in Fig. 4 B are represented the polarity of drive signal that different display unit is received respectively; Therefore Fig. 4 B also can be regarded as the synoptic diagram of odd number display unit 210 or even number display unit 220.Shown in Fig. 4 B, the drive signal polarity that each display unit 210,220 is received is that display unit is received drive signal polarity around it.In other words, display panels shown in Fig. 4 B has the reversal result of single-point conversion (One Dot Inversion), and also therefore the shown picture of display panels has least significantly film flicker visual effect.
Figure 5 shows that the alternate embodiment of liquid crystal indicator 100 shown in Figure 3.As shown in Figure 5, odd number display unit 210 and even number display unit 220 are odd number source electrode line 310 and the even number source electrode lines 320 that are electrically connected on pixel driving device 300 respectively in the display panels, and wherein odd number display unit 210 and even number display unit 220 are to be electrically connected on gate line G1 simultaneously.This shows that display unit and source electrode line have man-to-man structural relation.In addition, switching signal generator 400 shown in Figure 5 is to be same as switching signal generator 400 shown in Figure 3; Yet it is that the switching signal of second standard of output device is to pixel driving device 300 that the switching signal generator 400 of present embodiment will close one to one according to 310,320 of above-mentioned display unit 210,220 and source electrode lines.
Fig. 6 A is depicted as the polarity Pareto diagram of 300 output drive signals of pixel driving device, and wherein positive pole in each grid and negative pole shown in Fig. 6 A are to be the polarity of this drive signal in different time slots.In the present embodiment, pixel driving device 300 is similarly respectively at output drive signal in the independent time slots such as first time slot 510, second time slot 520, the 3rd time slot 530, the 4th time slot 540, and wherein above-mentioned four time slots are formed round-robin signal sequence row 500.After the switching signal of receiving second standard of tool, 300 output drive signals of pixel driving device are the polarity that is different from second time slot 520 and the 4th time slot 540 in the polarity of first time slot 510 and the 3rd time slot 530.In other words, drive signal is identical with the polarity of the 3rd time slot 530 in first time slot 510, and same drive signal is identical in the polarity of second time slot 520 and the 4th time slot 540.
Fig. 6 B be depicted as display panels shown in Figure 5 the actual polarity Pareto diagram of receiving drive signal, wherein positive pole in the grid and negative pole shown in Fig. 6 B are represented the polarity of drive signal that different display unit is received respectively.Shown in Fig. 6 B, the polarity of the drive signal that final display unit is received is to be different from its polarity of drive signal that other display units are received all around.Therefore, display panels shown in Fig. 6 B finally has the reversal result of single-point conversion (One Dot Inversion), and also therefore the film flicker visual effect of the final picture that presents of display panels is least obvious.Can learn by top narration, by the adjustment and the setting of switching signal generator 400 output signals, switching signal generator 400 of the present invention and pixel driving device 300 can be used for driving the display panels with different structure and make it finally all have the reversal result of single-point conversion (One Dot Inversion).
Figure 7 shows that the calcspar of Fig. 3 and pixel driving device shown in Figure 5 300.As shown in Figure 7, pixel driving device 300 comprises polar signal generator 330, polarity selector 340 and driving signal generator 330, and wherein polarity selector 340 is to be electrically connected at polar signal generator 330 and driving signal generator 350 simultaneously.The polarity selector 340 of present embodiment receives one first polar signal and one second polar signal and selectivity from polar signal generator 330, and one of them transfers to driving signal generator 350 to produce plural drive signal to an amplifier 360 with two signals, transmits odd number display unit 210 and the even number display unit 220 of those drive signals to display panels for amplifier 360 after the amplitude of amplifying drive signal.In addition, in the present embodiment, polar signal generator 330 is to be used to produce first polar signal and second polar signal, but is not limited thereto; In different embodiment, polar signal generator 330 also can only produce a polar signal, and polarity selector 340 also can be obtained another polar signal from the external world.
Please also refer to Fig. 4 A and Fig. 7 at this.Polar signal generator 330 is arranged output first polar signal to the polarity selector switch according to first polarity.It is the polarity arrangement of first time slot 510, second time slot 520, the 3rd time slot 530, the 4th time slot 540 shown in Fig. 4 A that above-mentioned first polarity is arranged.In other words, first polarity arrange represent drive signal in first time slot 510 and the 4th time slot 540 the polarity that should have be to be different from the polarity that second time slot 520 and the 3rd time slot are had.When driving signal generator 300 is received first polar signal
As shown in Figure 7, polarity selector is 340 whiles to receive first polar signal and second polar signal from polar signal generator 330 and outside, and wherein above-mentioned two polar signals have different polarity respectively and arrange.In the present embodiment, second polar signal comprises second polarity to be arranged, and wherein the arrangement of second polarity is to be same as the polarity of first time slot 510, second time slot 520, the 3rd time slot 530, the 4th time slot 540 shown in Fig. 6 A to arrange.In other words, second polar signal is identical with the polarity of the 3rd time slot 530 in first time slot 510, and this polar signal is identical in the polarity of second time slot 520 and the 4th time slot 540.In the present embodiment, polarity selector 340 is to be electrically connected on Fig. 3 and switching signal generator 400 shown in Figure 5 to receive switching signal, wherein polarity selector will one of them transfers to driving signal generator 300 with first polar signal or second polar signal according to switching signal, arranges according to the polarity of receiving polar signal for driving signal generator 300 and produces the drive signal that the corresponding polarity of tool is arranged.In the present embodiment, second polar signal is from the device beyond the pixel driving device 300, but is not limited thereto; In different embodiment, polar signal generator 330 can be in order to produce first polar signal and second polar signal to polarity selector switch 340 simultaneously.
In the embodiment shown in fig. 7, polarity selector 340 is to be electrically connected on Fig. 3 and switching signal generator 400 shown in Figure 5 to accept switching signal, and wherein polarity selector 340 will one of them transfers to driving signal generator 350 with first polar signal and second polar signal according to switching signal.In the present embodiment, when switching signal be in first punctual, polarity selector 340 will transmit first polar signal to driving signal generator 350, produce the drive signal of the arrangement of polarity shown in plural tool Fig. 4 A for it.On the other hand, when switching signal be in second punctual, second polar signal will be transferred to driving signal generator 350 and produce the drive signal that polarity shown in plural tool Fig. 6 A is arranged for it.Switching signal is represented the display cell structure of display panels, therefore accurate by the position that changes switching signal, pixel driving device 300 can change the polarity of output drive signal accordingly to be arranged to display panels, and makes it produce the reversal result of single-point conversion (One Dot Inversion).
Figure 8 shows that the calcspar of driving signal generator 350 shown in Figure 7 and amplifier 360.As shown in Figure 8, driving signal generator 350 comprises plural odd number signal output source 351 and plural even signal output source 352 and amplifier 360 comprises plural odd number amplifier 361 and plural even number amplifier 362.Except the signal output source of end, be about odd number signal output source 351 adjacent to two even signal output sources.Similarly, the even signal output source also about adjacent to two odd number signal output sources 352, vice versa.In the present embodiment, odd number signal output source 351 and even signal output source 352 are to be electrically connected on odd number amplifier 361 and even number amplifier 362 respectively and drive signal is transferred to corresponding amplifier to increase the energy of drive signal.362 in odd number amplifier 361 and even number amplifier are to see through odd number source electrode line 310 and even number source electrode line 320 respectively drive signal is transferred to corresponding display unit after amplifying corresponding drive signal.
Figure 9 shows that the alternate embodiment of driving signal generator shown in Figure 8.As shown in Figure 9, driving signal generator 350 comprises a switching device shifter 353, is electrically connected on odd number signal output source 351, even signal output source 352, odd number amplifier 361 and even number amplifier 362 simultaneously.In the present embodiment, odd number signal output source 351 and even signal output source 352 can continue the drive signal of output cathode and negative pole respectively, and switching device shifter 353 is to be electrically connected on polarity selector 340 to receive first polar signal or second polar signal and to come respectively drive signal selectivity guiding odd number amplifier 361 and even number amplifier 362 with the signal output source according to the polar signal received.When switching device shifter 353 is received first polar signal, one of them drive signal of signal output source 351,352 is transferred to odd number amplifier 361 and even number amplifier 362 respectively.Thus, odd number amplifier 361 and even number amplifier 362 will amplify and transmit the drive signal with identical polar simultaneously.In addition, when switching device shifter 353 is received second polar signal, the drive signal (tool opposed polarity) of signal output source 351,352 is transferred to odd number amplifier 361 and even number amplifier 362 respectively.Thus, odd number amplifier 361 and even number amplifier 362 will amplify and transmit the drive signal with dissimilar polarities simultaneously.
Figure 10 shows that the image element driving method of display panels of the present invention.As shown in figure 10, image element driving method comprises step S1000, arranges according to first polarity arrangement generation first polar signal and according to second polarity and produces first polar signal and second polar signal respectively.In the present embodiment, first polar signal and second polar signal are to be used to indicate driving signal generator to produce the drive signal that the corresponding polarity of tool is arranged, and are used to drive the display panels with different frameworks.Step S1010 comprise according to switching signal export first polar signal and second polar signal one of them to driving signal generator, to be exported the foundation that those drive signal integral polarities are arranged as driving signal generator.In the present embodiment, switching signal is for the numerical digit signal and has two position standards, represents the display panels of two different frameworks respectively; In other words, first polar signal is represented the display panels with different frameworks respectively with second polar signal.In the present embodiment, display panels comprises plural odd number display unit and the complex pair digital display shows the unit, and driving signal generator then comprises plural odd number source electrode line and plural even number source electrode line.In different embodiment, odd number display unit and even number display unit can be electrically connected on same source electrode line simultaneously or be electrically connected on the odd number source electrode line respectively and the even number source electrode line.Step S1020 comprises according to receiving that polarity that polar signal comprises is arranged and exports corresponding drive signal to display panels, so that it has the reversal result of single-point conversion (One Dot Inversion), and the film flicker phenomenon that produced during reverse again of the pixel that weakens display panels simultaneously.
In the embodiment shown in fig. 10, driving signal generator passes through plural odd number source electrode line and plural even number source electrode line output drive signal respectively to display panels.When the digital display of display panels shows that unit and even number display unit can be electrically connected on same source electrode line simultaneously, driving signal generator will be received corresponding first polar signal and have the drive signal of identical polar by odd number source electrode line and the output of even number source electrode line.When odd number display unit and even number display unit are electrically connected on odd number source electrode line and even number source electrode line respectively, driving signal generator will be received second polar signal and have the drive signal of dissimilar polarities by odd number source electrode line and the output of even number source electrode line.
In addition, in the present embodiment, driving signal generator will be in output drive signal in the round-robin signal sequence row, and wherein signal sequence comprises first time slot, second time slot, the 3rd time slot and the 4th time slot.When driving signal generator was received first polar signal, the polarity that drive signal is had in first time slot and the 4th time slot was to be different from the polarity that this two time slot and the 3rd time slot are had.On the other hand, when driving signal generator was received second polar signal, the polarity that drive signal is had in first time slot and the 3rd time slot was to be different from the polarity that this two time slot and the 4th time slot are had.
Can learn from above narration, as long as adjust the position of switching signal according to the framework of display panels accurate, can indicate driving signal generator to send drive signal that the tool opposed polarity arranges to display panels and make its reversal result who finally all has single-point conversion (One Dot Inversion) and to the least tangible film flicker phenomenon of human eye.
Though aforesaid description and diagram have disclosed preferred embodiment of the present invention, must recognize variously increase, many modifications and replace and may be used in preferred embodiment of the present invention, and can not break away from the spirit and the scope of the principle of the invention that defines as appended claim.Be familiar with this skill person and can know from experience the modification that the present invention may be used in a lot of forms, structure, layout, ratio, material, element and assembly.Therefore, this paper, should be regarded as in order to explanation the present invention in all viewpoints in embodiment that this disclosed, but not in order to restriction the present invention.Scope of the present invention should be defined by the attached claim in back, and contains its legal equivalents, is not limited to previous description.
Claims (12)
1. pixel driving device comprises:
One polar signal generator is arranged output one first polar signal according to one first polarity;
One polarity selector is accepted one second polar signal and a switching signal that this first polar signal, corresponding one second polarity are arranged, and exports this first polar signal or this second polar signal according to this switching signal selectivity; And
One driving signal generator is electrically connected at this polarity selector and receives this first polar signal or this second polar signal;
Wherein this driving signal generator will be arranged plural first drive signal of output according to this first polarity after receiving this first polar signal, this driving signal generator will be arranged plural second drive signal of output according to this second polarity when receiving this second polar signal, these first drive signals and these second drive signals have different polarity respectively and put in order.
2. pixel driving device as claimed in claim 1, wherein this driving signal generator comprises an odd number signal output source and an even signal output source, when receiving this first polar signal, this odd number signal output source and the output of this even signal output source have these first drive signals of identical polar; When this driving signal generator was received this second polar signal, this odd number signal output source and this even signal output source were exported these second drive signals with dissimilar polarities respectively.
3. pixel driving device as claimed in claim 2 further comprises an odd number amplifier and an even number amplifier, wherein this odd number signal output source is electrically connected at this odd number amplifier, this even signal output source is electrically connected at this even number amplifier, and this odd number amplifier and the acceptance of this even number amplifier are also amplified these first drive signals or these second drive signals.
4. pixel driving device as claimed in claim 3, wherein this driving signal generator comprises a switching device shifter, simultaneously electrical ties is in this odd number signal output source, this even signal output source, this odd number amplifier and this even number amplifier, this driving signal generator accept this first drive signal of being exported from this odd number signal output source or this second drive signal and selectivity transmit this first drive signal or this second drive signal to this odd number amplifier or this even number amplifier at least one of them.
5. pixel driving device as claimed in claim 1, wherein polar signal generator is arranged in this first polar signal of output in the circulation time sequence according to this first polarity, this circulation time sequence comprises one first time slot, one second time slot, one the 3rd time slot and one the 4th time slot, and the polarity that this first polar signal is had in this first time slot and the 4th time slot is to be different from the polarity that this second time slot and the 3rd time slot are had.
6. liquid crystal indicator comprises:
One display panels comprises plural odd number display unit and complex pair digital display and shows the unit; And
One pixel driving device comprises:
One polar signal generator is arranged output one first polar signal according to one first polarity;
One polarity selector is accepted one second polar signal and a switching signal that this first polar signal, corresponding one second polarity are arranged, and exports this first polar signal or this second polar signal according to this switching signal selectivity; And
One driving signal generator is electrically connected at this polarity selector to receive this first polar signal or this second polar signal;
Wherein this driving signal generator will be arranged plural first drive signal of transmission to these odd number display units and these even number display units according to this first polarity after receiving this first polar signal, this driving signal generator will be arranged plural second drive signal of transmission to these odd number display units and these even number display units according to this second polarity when receiving this second polar signal, these first drive signals and these second drive signals have different polarity respectively and put in order.
7. liquid crystal indicator as claimed in claim 6, wherein this driving signal generator comprises an odd number signal output source and an even signal output source, when this driving signal generator was received this first polar signal, this odd number signal output source and the output of this even signal output source had these first drive signals of identical polar; When this driving signal generator was received this second polar signal, this odd number signal output source and the output of this even signal output source had these second drive signals of dissimilar polarities.
8. liquid crystal indicator as claimed in claim 7 further comprises an odd number amplifier and an even number amplifier, wherein this odd number signal output source is electrically connected at this odd number amplifier, this even signal output source is electrically connected at this even number amplifier, and this odd number amplifier and the acceptance of this even number amplifier are also amplified these first drive signals or these second drive signals.
9. liquid crystal indicator as claimed in claim 8, wherein this driving signal generator comprises a switching device shifter, be electrically connected on this odd number signal output source, this odd number amplifier and this even number amplifier simultaneously, this driving signal generator from this odd number signal output source accept this first drive signal or this second drive signal and selectivity transmit this first drive signal or this second drive signal to this odd number amplifier or this even number amplifier at least one of them.
10. the image element driving method of a display panels comprises the following step:
Arrange generation one first polar signal according to one first polarity;
According to a switching signal export this first polar signal and one second polar signal one of them, wherein this second polar signal is to arrange corresponding to one second polarity;
After receiving this first polar signal, arrange plural first drive signal to a display panels of output according to this first polarity; And
After receiving this second polar signal, arrange plural second drive signal of output to this display panels according to this second polarity;
Wherein these first drive signals and these second drive signals have different polarity respectively and put in order.
11. image element driving method as claimed in claim 10, wherein this polar signal output step comprises:
When receiving this first polar signal, export these first drive signals respectively by an odd number source electrode line and an even number source electrode line with identical polar; And
When receiving this second polar signal, export these second drive signals respectively by this odd number source electrode line and this even number source electrode line with dissimilar polarities.
12. image element driving method as claimed in claim 10 further is contained in this first drive signal of output in the circulation time sequence, wherein this circulation time sequence comprises one first time slot, one second time slot, one the 3rd time slot and one the 4th time slot, and the polarity that this first drive signal is had in this first time slot and the 4th time slot is to be different from the polarity that this second time slot and the 3rd time slot are had.
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| CN1614677A (en) * | 2003-11-05 | 2005-05-11 | 夏普株式会社 | Liquid crystal display device, driving circuit for the same and driving method for the same |
| CN101256325A (en) * | 2007-02-28 | 2008-09-03 | 三星电子株式会社 | Display device and driving method therefor |
| US20090174642A1 (en) * | 2007-12-28 | 2009-07-09 | Woo Ki Min | Liquid crystal display device and driving method thereof |
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Application publication date: 20111019 |