CN1652187A - Source driving circuit of liquid crystal display panel and its source driving method - Google Patents

Abstract

The present invention relates to a source drive circuit of liquid crystal display panel and its source driving method. The source driving method used for liquid crystal display panel includes the following steps: firstly, receiving an input document, and using a ranum control signal to process said input document into an output image document with a ranum pokarity distribution so as to drive a source of said liquid crystal display panel. Besides, said invention also provides the concrete characteristics of the described ranum polarity distribution.

Description

The source electrode drive circuit of display panels and source driving method thereof

Technical field

The present invention relates to a kind of display panels (liquid crystal display, " LCD ") source electrode drive circuit and source driving method thereof, particularly relate to source electrode drive circuit and source driving method (SOURCE DRIVING CIRCUIT FORLIQUID CRYSTAL DISPLAY PANEL AND SOURCE DRIVING METHOD THEREFOR) thereof that an a kind of polarity of display panels distributes.

Background technology

In recent years, because advantages such as that display panels has is in light weight, size thin, area is changeable, low operating voltage, power saving and radiationless lines, become the main flow of display panel gradually.Particularly, for portable electronic device, for example say, the screen of mobile computer, mobile phone screen, PDA (Personal Digital Assistant) (Personal Digital Assistance, " PDA ") display screen etc., have only LCD screen just can meet its demand especially, so display panels then have more and more important trend.

For display panels,, can not be fixed under the some voltage exactly because liquid crystal molecule itself has a specific character always.Otherwise of long duration, even voltage is got rid of, the liquid crystal molecule meeting can't be again along with the variation of electric field is rotated because its characteristic is destroyed.So for display panels, at set intervals,, must change the voltage that is applied on the liquid crystal, be destroyed with the characteristic of avoiding liquid crystal molecule even shown picture does not change.And in the type of drive of display panels, the method for reversal of poles is very important.

At present, one existing known display panels for example says to have 1024 * 768 screen resolution, that is to say that this liquid crystal panel has the pixel of 1024 row (perpendicular line), 768 row (horizontal line), 3 sub-pixels that have three kinds of colors of red, green, blue in each pixel.In the driving method that has known display panels now, for each sub-pixel (sub-pixel) in each pixel (pixel), the method for its reversal of poles is to carry out in following mode basically.Exactly the voltage difference that puts on the liquid crystal molecule two ends is divided into two kinds of positive electricity pressure reduction and negative electricity pressure reduction.Therefore can have positive polarity or negative polarity after liquid crystal molecule is applied in voltage.Seeing also Figure 1A to shown in Fig. 1 D, is the synoptic diagram that has the mode of known display panels reversal of poles now.Generally speaking, the method of reversal of poles, comprise the row counter-rotatings (rowinversion) of the picture counter-rotating (frame inversion) shown in Figure 1A, Figure 1B, the row counter-rotating (column inversion) of Fig. 1 C, and the point of Fig. 1 D counter-rotating (dotinversion).Above-mentioned several conversion regime, its difference are to be on the display panels, and whether the polarity between adjacent two pixels (pixel) identical, and the counter-rotating of each picture element polarity, basically with the whole front panel image to scan (scanning) synchronous.Can find, picture counter-rotating (frame inversion) is that the polarity of all pixels of whole front panel is all identical, and the polarity of two subframes between scanning is opposite, this kind mode allows the user feel that picture has flicker (flicker) easily, and, cause cross-talk problems such as (cross-talk) easily because the polarity between the contiguous picture element is all identical.Row counter-rotatings (row inversion) are that the polarity of the pixel of adjacent two row (horizontal line) on the panel is all opposite, row counter-rotating (columninversion) is that the polarity of the pixels of adjacent two row on the panel is all opposite, and some counter-rotating (dotinversion) then is that the polarity of pixel adjacent 2 on the panel is all opposite.Because some counter-rotating (dotinversion) causes the problem of flicker (flicker) and cross-talk (cross-talk) least easily, therefore be used comparatively widely at present.

One shortcoming of some counter-rotating (dot inversion) is, because the polarity of adjacent two row is all opposite, therefore the power supply that is consumed can be more.

In recent years, be not easy to cause the benefit of flicker (flicker) and cross-talk (cross-talk) for retention point counter-rotating (dot inversion), can solve the bigger problem of power consumption again, according to existing known some counter-rotating (dot inversion) mode, develop again and biserial counter-rotating modes such as (two-row inversion).Seeing also shown in Fig. 1 E, is the synoptic diagram that the polarity of biserial counter-rotating of the some counter-rotating of existing known display panels distributes, and the polarity that has illustrated the biserial counter-rotating distributes.Because for each perpendicular line, the capacitor charge and discharge time interval is about 2 times of this time of the type of drive of Fig. 1 D, therefore can solve the short thereby bigger problem of power consumption of capacitor charge and discharge time in the prior art.

Seeing also shown in Figure 2ly, is the pixel of an existing known display panels and a circuit diagram of its type of drive, has illustrated pixel and its type of drive of an existing display panels.Please consult Figure 1B and shown in Figure 2 simultaneously, shortcoming in existing known row reverse (row inversion) is, because in each horizontal line, the data of all sub-pixels (data) polarity is all identical, therefore the size of current of common voltage (common voltage) Vcom and gate voltage (gate voltage) Vg signal is respectively Ic*n and Ig*n, wherein Ic is for flowing to the electric current of the capacitor C 1c of each sub-pixel via common pole plate (common plate), Ig is for flowing to the electric current of the capacitor C st of each pixel via gate drive line Gm, n is that the number of this each horizontal sub-pixel of display panels (is for example said, panel for 1024 * 768, n are 1024*3).

See also shown in Figure 3ly, be a synoptic diagram of the drive unit of an existing known display panels, illustrated the drive unit of an existing known display panels.Wherein, for a display panels 300 (for example say and state panel) with 1024 * 768 pixels, usually panel 300 need be divided into several regional 302a, 302b, 302c, each zone is distinctly by a drive unit 304a, 304b, 304c drives its horizontal scanning linear, because the polarity of each above-mentioned sub-pixel is all identical, therefore institute's consumed current (Ic*n and Ig*n) is directly proportional with the number n of sub-pixel, and cause the pressure drop phenomena of common voltage Vcom and gate voltage Vg, this can cause each pixel or each regional 302a of the picture of panel 300,302b, the brightness irregularities that 302c is shown, for example say the generation of the phenomenon of block inequality as shown in Figure 3 (shadowing bank).

See also shown in Figure 4ly, be the pixel and a circuit diagram of its type of drive of an existing known display panels, illustrated pixel and its type of drive that has known display panels now.Please consult Fig. 1 D and shown in Figure 4 simultaneously, in existing some counter-rotating (dot inversion) type of drive, because in each horizontal line, the polarity of adjacent pixels is opposite, so, for example say that electric current I g1 is opposite with the direction of Ig2, also opposite with the direction of Ign up to electric current I gn-1, the Ig_total that therefore obtains summation at last can be less than Ig*n.Similarly, electric current I c1 is opposite with the direction of Ic2, and is also opposite with the direction of Icn up to electric current I cn-1, and the Ic_total that therefore obtains summation at last can be less than Ic*n.But if shown picture data (data) also is adjacent variation, for example say and be (00+, 3F-, 00+, 3F-, ...) time, the electric current of each above-mentioned sub-pixel also has the effect of addition, therefore the electric current of the common voltage Vcom that is consumed and the electric current of gate voltage Vg also can become big, this also can cause the pressure drop phenomena of common voltage Vcom and gate voltage Vg, and cause the pixel of display panels or several regional 302a as shown in Figure 3,302b, the brightness irregularities of demonstration appears in 302c, for example says the phenomenon of block inequality (shadowing bank).So for display panels, a kind of picture brightness on the existing known panel inhomogeneous or the driving circuit and method of block is uneven problems such as (shadowing bank) can avoided is necessary.

This shows that the driving circuit of above-mentioned existing display panels and method thereof still have many defectives, and demand urgently further being improved.For the driving circuit that solves existing display panels and the defective of method thereof, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but does not see always that for a long time suitable design finished by development, and this obviously is the problem that the anxious desire of relevant dealer solves.

Because the defective that the driving circuit of above-mentioned existing display panels and method thereof exist, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, in the hope of founding a kind of source electrode drive circuit and source driving method thereof of new display panels, can improve the driving circuit and the method thereof of general existing display panels, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.

Summary of the invention

The objective of the invention is to, restriction at above-mentioned conventional art, overcome the defective of the driving circuit existence of existing display panels, and provide a kind of source electrode drive circuit of display panels of new structure, technical matters to be solved is to make it can solve the problem of brightness irregularities and block inequality (shadowing bank) in the existing known display panels, thereby be suitable for practicality more, and have the value on the industry.

Another object of the present invention is to, overcome the defective of the driving method existence of existing display panels, and provide a kind of source driving method of new display panels, technical matters to be solved is to make it can solve the problem of brightness irregularities and block inequality (shadowing bank) in the existing known display panels, thereby be suitable for practicality more, and have the value on the industry.

The object of the invention to solve the technical problems realizes by the following technical solutions.The source electrode drive circuit of a kind of display panels that proposes according to the present invention, it comprises: a data receives and working storage, in order to receive an input data; An one displacement working storage and a line phase locking unit, wherein this displacement working storage is in order to temporary in proper order in this line phase locking unit with this input data, and wherein this line phase locking unit is connected to this data reception and working storage and this displacement working storage, in order to receive this input data and in addition parallel processing, to obtain first signal of video signal; One potential shift device is connected to this line phase locking unit, in order to the input that receives this first signal of video signal and adjust its current potential, to obtain one second signal of video signal; One random numerical control system circuit; One numerical digit is changeed analogy converter, be connected to this potential shift device and this unrest numerical control system circuit, in order to receiving this second signal of video signal, and, this second signal of video signal is processed into a random number polarity distribution signal of video signal according to the received random numerical control system signal of this unrest numerical control system circuit; And an output buffer, being connected to this numerical digit changes analogy converter and this unrest numerical control system circuit, counts polarity distribution signal of video signal and this unrest numerical control system signal in order to receive this unrest, is processed into an image output data should unrest to count polarity distribution signal of video signal; Wherein this display panels has most horizontal lines in order to receiving a driving of a gate drive signal, and most perpendicular line are connected to this output buffer, in order to receive from this image output data of this output buffer input;

Wherein should unrest numerical control system signal can be so that this image output data has a random number polarity and distributes.

The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.

The source electrode drive circuit of aforesaid display panels, wherein count in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, and be that a random number horizontal line polarity distributes, and adjacent two horizontal those horizontal line polarity distributes opposite fully.

The source electrode drive circuit of aforesaid display panels, wherein count in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, be that a random number horizontal line polarity distributes, and on each those horizontal line in all most sub-pixels, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

The source electrode drive circuit of aforesaid display panels, wherein count in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, combination for most particular polarity distributions, and in all most sub-pixels that each those particular polarity distribute, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

The source electrode drive circuit of aforesaid display panels, wherein count in the polarity distribution in this unrest, one of them arrives K-1 bar (K＞1 under it when those horizontal lines, K is a positive integer) when this horizontal line has this first horizontal line polarity distribution, K bar under it all has one second horizontal line polarity to this level of 2K bar and distributes, and wherein this second horizontal line polarity distributes and distributes fully opposite with this first horizontal line polarity.

The source electrode drive circuit of aforesaid display panels is wherein counted in the polarity distribution in this unrest, and this first horizontal line polarity is distributed as a random number horizontal line polarity and distributes.

The source electrode drive circuit of aforesaid display panels, wherein count in the polarity distribution in this unrest, this first horizontal line polarity is distributed as a random number horizontal line polarity and distributes, and on each those horizontal line in all most sub-pixels, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

The source electrode drive circuit of aforesaid display panels, wherein count in the polarity distribution in this unrest, this first horizontal line polarity is distributed as the combination that most particular polarity distribute, and in all most sub-pixels that this particular polarity distributes, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

The object of the invention to solve the technical problems also adopts following technical scheme to realize.The source driving method of a kind of display panels that proposes according to the present invention, wherein this display panels has most horizontal lines, and this source driving method may further comprise the steps: receive an input data; One random numerical control system signal is provided, has the image output data that a random number polarity distributes so that this input data is processed into; And use this image output data to drive the one source pole of this display panels.

The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.

The source driving method of aforesaid display panels, wherein count in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, and be that a random number horizontal line polarity distributes, and adjacent two horizontal those horizontal line polarity distributes opposite fully.

The source driving method of aforesaid display panels, wherein count in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, be that a random number horizontal line polarity distributes, and on each those horizontal line in all most sub-pixels, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

The source driving method of aforesaid display panels, wherein count in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, combination for most particular polarity distributions, and in all most sub-pixels that each those particular polarity distribute, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

The source driving method of aforesaid display panels, wherein count in the polarity distribution in this unrest, one of them arrives K-1 bar (K＞1 under it when those horizontal lines, K is a positive integer) when this horizontal line has this first horizontal line polarity distribution, K bar under it all has one second horizontal line polarity to this level of 2K bar and distributes, and wherein this second horizontal line polarity distributes and distributes fully opposite with this first horizontal line polarity.

The source driving method of aforesaid display panels is wherein counted in the polarity distribution in this unrest, and this first horizontal line polarity is distributed as a random number horizontal line polarity and distributes.

The source driving method of aforesaid display panels, wherein count in the polarity distribution in this unrest, this first horizontal line polarity is distributed as a random number horizontal line polarity and distributes, and on each those horizontal line in all most sub-pixels, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

The source driving method of aforesaid display panels, wherein count in the polarity distribution in this unrest, this first horizontal line polarity is distributed as the combination that most particular polarity distribute, and in all most sub-pixels that this particular polarity distributes, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, major technique of the present invention thes contents are as follows:

The present invention proposes a kind of a kind of source electrode drive circuit that is used for a display panels, and it comprises that a data receives and working storage, in order to receive an input data; An one displacement working storage (bit shift register) and a line phase locking unit, wherein this displacement working storage is in order to this input data is temporary in proper order in this line phase locking unit, and wherein this line phase locking unit is connected to this data reception and working storage and this displacement working storage, in order to receive this input data and in addition parallel processing, to obtain first signal of video signal; One potential shift device is connected to this line phase locking unit, in order to the input that receives this first signal of video signal and adjust its current potential, to obtain one second signal of video signal; One random numerical control system circuit; One numerical digit is changeed analogy converter (digital revolving die plan converter), be connected to this potential shift device and this unrest numerical control system circuit, in order to receive this second signal of video signal, and, this second signal of video signal is processed into a random number polarity distribution signal of video signal according to the received random numerical control system signal of this unrest numerical control system circuit; And an output buffer, being connected to this numerical digit changes analogy converter and this unrest numerical control system circuit, counts polarity distribution signal of video signal and random numerical control system signal in order to receive this unrest, is processed into an image output data should unrest to count polarity distribution signal of video signal.Wherein this display panels has most horizontal lines in order to receiving a driving of a gate drive signal, and most perpendicular line are connected to this output buffer, in order to receive from this image output data of this output buffer input.Wherein should unrest numerical control system signal can be so that this image output data has a random number polarity and distributes.

In one embodiment of this invention, this unrest of above-mentioned source electrode drive circuit is counted in the polarity distribution, horizontal line polarity on each those horizontal line distributes, and be that a random number horizontal line polarity distributes, and adjacent two horizontal those horizontal line polarity distributes opposite fully.

In one embodiment of this invention, this unrest of above-mentioned source electrode drive circuit is counted in the polarity distribution, horizontal line polarity on each those horizontal line distributes, be that a random number horizontal line polarity distributes, and on those horizontal lines in all most sub-pixels, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

In one embodiment of this invention, this unrest of above-mentioned source electrode drive circuit is counted in the polarity distribution, horizontal line polarity on each those horizontal line distributes, combination for most particular polarity distributions, and in all most sub-pixels that each those particular polarity distribute, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

In one embodiment of this invention, this unrest of above-mentioned source electrode drive circuit is counted in the polarity distribution, one of them arrives K-1 (K＞1 under it when those horizontal lines, K is a positive integer) when this horizontal line of bar has this first horizontal line polarity distribution, K bar under it all has one second horizontal line polarity to this horizontal line of 2K bar and distributes, and wherein this second horizontal line polarity distributes and distributes fully opposite with this first horizontal line polarity.In addition, this first horizontal line polarity distributes and can distribute for a random number horizontal line polarity.Or this first horizontal line polarity is distributed as a random number horizontal line polarity and distributes, and on each those horizontal line in all most sub-pixels, and the number with those pixels of positive polarity equals to have a number of those pixels of negative polarity.In addition, it can also be most the combinations that particular polarity distributes that this first horizontal line polarity distributes, and in all most sub-pixels that each those particular polarity distribute, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

The present invention also proposes a kind of source driving method that is used for a display panels, and wherein this display panels has most horizontal lines.This source driving method comprises that elder generation receives an input data, then provides a random numerical control system signal, this input data be processed into the image output data with a random number polarity distribution and use this image output data to drive the one source pole of this display panels.The characteristic that distributes in the random number polarity of source driving method that this proposed, all related embodiment of the characteristic that the random number polarity of the source electrode drive circuit that is proposed with the invention described above distributes are identical, therefore repeated description no longer.

Via as can be known above-mentioned, the invention relates to a kind of source electrode drive circuit and source driving method thereof of display panels.The source driving method that this is used for display panels comprises receiving an input data earlier, and with a random numerical control system signal this input data is processed into the image output data with a random number polarity distribution, to drive the one source pole of this display panels.Count in the polarity distribution in this unrest, the horizontal line polarity on each horizontal line of display panels distributes, and can be that a random number horizontal line polarity distributes, and adjacent two horizontal those horizontal line polarity distributes fully on the contrary.Moreover in arbitrary horizontal line, the number with sub-pixel of positive polarity can equal to have the number of the sub-pixel of negative polarity.Or horizontal line polarity on each horizontal line distributes, and is the combination that most particular polarity distribute, and in each particular polarity distributes, and the number with sub-pixel of positive polarity equals to have the number of the sub-pixel of negative polarity.

By technique scheme, the present invention has following advantage at least: the source electrode drive circuit that is used for a display panels that the present invention proposes, can solve effectively in the prior art, the excessive pressure drop that causes of the electric current I g_total of the electric current I c_total of common voltage Vcom and gate voltage Vg, and can solve the problem of brightness irregularities and block inequality (shadowing bank) in the display panels.

In sum, the source electrode drive circuit of the display panels that the present invention is special and source driving method thereof, have above-mentioned many advantages and practical value, and in like product and method, do not see have similar structural design and method to publish or use and really genus innovation, no matter it is at product structure, bigger improvement is all arranged on driving method or the function, have large improvement technically, and produced handy and practical effect, and the driving circuit of more existing display panels and driving method thereof have the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a novelty, progressive, practical new design.

Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.

Description of drawings

Figure 1A is the synoptic diagram that has the mode of known display panels reversal of poles now to Fig. 1 D.

Fig. 1 E is the synoptic diagram that the polarity of biserial counter-rotating of the some counter-rotating of existing known display panels distributes.

Fig. 2 is the pixel of an existing known display panels and a circuit diagram of its type of drive.

Fig. 3 is a synoptic diagram of the drive unit of an existing known display panels.

Fig. 4 is the pixel of an existing known display panels and a circuit diagram of its type of drive.

Fig. 5 is a polarity distribution schematic diagram of the display panels that illustrates according to one embodiment of the invention.

Fig. 6 is another polarity distribution schematic diagram of the display panels that illustrates according to one embodiment of the invention.

Fig. 7 is a polarity distribution schematic diagram of the display panels that illustrates according to another embodiment of the present invention.

Fig. 8 is a polarity distribution schematic diagram of the display panels that illustrates according to further embodiment of this invention.

Fig. 9 is one source pole driving circuit one circuit block diagram of the display panels that illustrates according to one embodiment of the invention.

Figure 10 A is rank, voltage position (voltage level) synoptic diagram of the image data of the display panels that illustrates according to one embodiment of the invention.

Figure 10 B is distribute a synoptic diagram with Potential distribution of the polarity of the some counter-rotating of the existing known display panels shown in Fig. 1 D.

Figure 10 C is a synoptic diagram of the Potential distribution that distributes of the polarity of the display panels as shown in Figure 6 that illustrates according to one embodiment of the invention.

300: display panels

302a, 302b, 302c: zone

304a, 304b, 304c: drive unit

H1, H2 ... arrive Hm-1, Hm: horizontal line

V1, V2 ... arrive Vn-1, Vn: perpendicular line

900: source electrode drive circuit

902: data receives and working storage (Data Receiving and buffer)

904: displacement working storage (bit shift register)

906: the line phase locking unit

908: the potential shift device

910: numerical digit is changeed analogy converter (digital revolving die plan converter)

912: output buffer

914: random numerical control system circuit (random number control circuit)

916: display panels

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, source electrode drive circuit and its concrete structure of source driving method, driving method, step, feature and the effect thereof of the display panels that foundation the present invention is proposed, describe in detail as after.

Seeing also shown in Figure 5ly, is a polarity distribution schematic diagram of the display panels that illustrates according to one embodiment of the invention, and a polarity that has illustrated a display panels distributes, and is according to one embodiment of the invention.In one embodiment of this invention, when scanning whole image, it can be a random number distribution (random-number distribution) that its polarity distributes at every turn.In another embodiment, see also shown in Figure 5, in order to reduce the probability that flicker (flicker) and cross-talk (cross-talk) take place, each horizontal line H1, H2 ... the horizontal line polarity distribution on Hm-1, Hm can be that a random number distributes, and adjacent two horizontal horizontal line polarity distribute, opposite (for example say that H1 is opposite fully with the polarity of H2, or H2 being opposite fully with the polarity of H3) fully; Wherein V1, V2 ... to Vn-1, Vn is perpendicular line.In another embodiment, for the electric current I c_total that reduces common voltage Vcom as shown in Figure 4 and the electric current I g_total of gate voltage Vg, take place with the phenomenon of avoiding pressure drop, during the horizontal line polarity of all sub-pixels on each horizontal line distributed, the number with pixel of positive polarity can equal to have the number of the pixel of negative polarity.

Then seeing also shown in Figure 6ly, is another polarity distribution schematic diagram of the display panels that illustrates according to one embodiment of the invention, and another polarity that has illustrated a display panels distributes, and is according to one embodiment of the invention.In one embodiment of this invention, each horizontal line H1, H2 ... it can be the continuous arrangement that a particular polarity distributes that the horizontal line polarity on Hm-1, the Hm distributes, and adjacent two horizontal horizontal line polarity distribute, can be opposite fully.For example say on the horizontal line H1, this particular polarity be distributed as (+,-,+,+,-,-,+,-,-,+), the particular polarity distribution that distributes and to repeat continuously for this reason on the whole horizontal line H1.In addition, in another embodiment of the present invention, whole horizontal line H1 can also be a combination of most different particular polarity distributions.

Seeing also shown in Figure 7ly, is a polarity distribution schematic diagram of the display panels that illustrates according to another embodiment of the present invention, and its polarity that has illustrated a display panels distributes, and is according to another embodiment of the present invention.In another embodiment of the present invention, each horizontal line H1, H2 ... the horizontal line polarity distribution on Hm-1, Hm can be the distribution mode of a pair of bar horizontal line reversal of poles (two-line rowinversion), that is to say, when wherein a horizontal line on the display panels has one first horizontal line polarity and distributes, distribute if its following 1 horizontal line has this first horizontal line polarity, then following 2 have one second horizontal line polarity with following 3 horizontal lines and distribute; If its following 1 horizontal line has one second horizontal line polarity and distributes, then following 2 have respectively with following 3 horizontal lines that this first horizontal line polarity distributes and this second horizontal line polarity distributes.Wherein this first horizontal line polarity distributes and distributes fully opposite with this second horizontal line polarity.For example in Fig. 7, the horizontal line polarity of horizontal line H1 distributes and can distribute for one first horizontal line polarity, this moment, horizontal line H2 had the one second horizontal line polarity distribution that distributes opposite with this first horizontal line polarity of H1, therefore, then having this on horizontal line H3 and the H4 respectively first distributes with this second horizontal line polarity.

Seeing also shown in Figure 8ly, is a polarity distribution schematic diagram of the display panels that illustrates according to further embodiment of this invention, and a polarity that has illustrated a display panels distributes, and is according to another embodiment of the present invention.In another embodiment of the present invention, each horizontal line H1, H2 ... the horizontal line polarity on Hm-1, Hm distributes, can be the distribution mode of a pair of bar horizontal line reversal of poles (two-line row inversion) as shown in Figure 7, and the distribution of the horizontal line polarity on each horizontal line can be the continuous arrangement that a particular polarity distributes.For example in Fig. 8, the horizontal line polarity of horizontal line H1 distribute and can distribute for particular polarity (+,-,+,+,-,-,+,-,-, +) continuous repeated arrangement, or in another embodiment of the present invention, whole horizontal line H1 can also be the combination that most different particular polarity distribute.This distribution can be that one first horizontal line polarity distributes.Horizontal line H2 had with this first horizontal line polarity of H1 one second opposite horizontal line polarity that distributes and distributed this moment, therefore, then have respectively on horizontal line H3 and the H4 this first with this second horizontal line polarity distribution.

Seeing also shown in Figure 9ly, is the circuit block diagram of the one source pole driving circuit of the display panels that illustrates according to one embodiment of the invention, illustrates the one source pole driving circuit of a display panels, is according to one embodiment of the invention.This source electrode drive circuit 900, comprise data reception and working storage (data receive and register) 902, displacement working storage (bit shift register) (shiftregister) 904, one line phase locking unit (line latch), 906, one potential shift device (levelshifter) 908, numerical digit commentaries on classics analogy converter 910, an output buffer 912, and a random numerical control system circuit 914.Wherein, data receives and working storage 902, is in order to receive an input data (input data, input data).Line phase locking unit 906 is connected to data and receives and working storage 902, displacement working storage 904 and potential shift device 908, wherein displacement working storage 902 is in order to receive this input data, after process parallel (in parallel) is handled input data is kept in line phase locking unit 906 in proper order, and the input data after this parallel processing (hereinafter referred to as first signal of video signal) is outputed in the potential shift device 908.Potential shift device 908, being connected to line phase locking unit 906 changes analogy converter 910 with numerical digit, in order to receive this first signal of video signal and to adjust its current potential (first signal of video signal behind the adjustment current potential is called second signal of video signal).Numerical digit is changeed analogy converter 910, be connected to potential shift device 908, random numerical control system circuit 914 and output buffer 912, in order to receive second signal of video signal that potential shift device 908 is exported, and according to the received random numerical control system signal (random controlsignal) of random numerical control system circuit 914, this second signal of video signal is processed into a random number polarity distribution signal of video signal, to be input in the output buffer 912.Output buffer 912, be connected to numerical digit and change analogy converter 910 and random numerical control system circuit 914, count polarity distribution signal of video signal and random numerical control system signal in order to receive this unrest, be processed into an image output data and output to a display panels 916 should unrest to count polarity distribution signal of video signal.

See also shown in Figure 9ly, wherein should unrest numerical control system signal can for example say, as the polarity distribution of Fig. 5 to embodiment shown in Figure 8 so that this image output data has random number polarity and distributes.

See also shown in Figure 10 A, it is rank, voltage position (voltage level) synoptic diagram of the image data of the display panels that illustrates according to one embodiment of the invention, having illustrated the rank, voltage position (voltage level) of the image data of a display panels, is according to one embodiment of the invention.Shown in Figure 10 A, for example, when image data was 00+, its voltage V00+ was 9V, when image data is 3F+, its voltage V3F+ is 9V, when image data was 00-, its voltage V00-was 0.2V, when image data is 3F-, its voltage V3F-is 4V, and the voltage of middle image data can use the interpolation method to try to achieve.

Seeing also shown in Figure 10 B, is distribute synoptic diagram with Potential distribution of the polarity of the some counter-rotating of the existing known display panels shown in Fig. 1 D, has illustrated the polarity distribution and the Potential distribution of the some counter-rotating of the existing known display panels shown in Fig. 1 D.Shown in Figure 10 B, for example, the polarity that has the display panels shown in known Fig. 1 D now distributes, and its first horizontal line has a Potential distribution and is (00+, 3F-, 00+, 3F-, 00+, 3F-, 00+, 3F-, 00+, 3F-, ...), and second horizontal line has a Potential distribution for (3F-, 00+, 3F-, 00+, 3F-, 00+, 3F-, 00+, 3F-, 00+ ...) etc.When its display panels (supposing that this panel has 1024 * 768 picture elements, has 3 sub-picture elements in each picture element) has circuit structure as Fig. 4, because

${\mathrm{<figure-callout\; id="00"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{00+}=\frac{({\mathrm{<figure-callout\; id="00"\; label="V"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">V</figure-callout>}}_{00+}-\mathrm{Vee})}{\mathrm{Zst}}=\frac{15}{\mathrm{Zst}}$

${\mathrm{<figure-callout\; id="3F"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{3F+}=\frac{({\mathrm{<figure-callout\; id="3F"\; label="V"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">V</figure-callout>}}_{3F+}-\mathrm{Vee})}{\mathrm{Zst}}=\frac{11}{\mathrm{Zst}}$

${\mathrm{Ig}}_{00-}=\frac{(V_{00-}-\mathrm{Vee})}{\mathrm{Zst}}=\frac{6.2}{\mathrm{Zst}}$

${\mathrm{<figure-callout\; id="3F"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{3F-}=\frac{({\mathrm{<figure-callout\; id="3F"\; label="V"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">V</figure-callout>}}_{3F-}-\mathrm{Vee})}{\mathrm{Zst}}=\frac{10}{\mathrm{Zst}}$

${\mathrm{<figure-callout\; id="00"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{00+}=\frac{({\mathrm{<figure-callout\; id="00"\; label="V"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">V</figure-callout>}}_{00+}-\mathrm{Vcom})}{\mathrm{Zlc}}=\frac{4.5}{\mathrm{Zlc}}$

${\mathrm{<figure-callout\; id="3F"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{3F+}=\frac{({\mathrm{<figure-callout\; id="3F"\; label="V"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">V</figure-callout>}}_{3F+}-\mathrm{Vcom})}{\mathrm{Zlc}}=\frac{0.5}{\mathrm{Zlc}}$

${\mathrm{Ic}}_{00-}=\frac{(V_{00-}-\mathrm{Vcom})}{\mathrm{Zlc}}=\frac{-4.3}{\mathrm{Zlc}}$

${\mathrm{<figure-callout\; id="3F"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{3F-}=\frac{({\mathrm{<figure-callout\; id="3F"\; label="V"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">V</figure-callout>}}_{3F-}-\mathrm{Vcom})}{\mathrm{Zlc}}=\frac{-0.5}{\mathrm{Zlc}}$

Therefore, first of Figure 10 B horizontal electric current I g_total and Ic_total distinctly are:

$\mathrm{Ig}\_\mathrm{total}=\frac{(5{\mathrm{<figure-callout\; id="00"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{00+}+5{\mathrm{<figure-callout\; id="3F"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{3F-})}{\mathrm{Zst}}\&times;307+\frac{({\mathrm{<figure-callout\; id="00"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{00+}+{\mathrm{<figure-callout\; id="3F"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{3F-})}{\mathrm{Zst}}=\frac{38400}{\mathrm{Zst}}$

$\mathrm{Ic}\_\mathrm{total}=\frac{(5{\mathrm{<figure-callout\; id="00"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{00+}+5{\mathrm{<figure-callout\; id="3F"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{3F-})}{\mathrm{Zlc}}\&times;307+\frac{({\mathrm{<figure-callout\; id="00"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{00+}+{\mathrm{<figure-callout\; id="3F"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{3F-})}{\mathrm{Zlc}}=\frac{6144}{\mathrm{Zlc}}$

See also shown in Figure 10 C, it is a synoptic diagram of the Potential distribution that distributes of the polarity of the display panels as shown in Figure 6 that illustrates according to one embodiment of the invention, having illustrated the Potential distribution of the polarity distribution of display panels as shown in Figure 6, is according to one embodiment of the invention.Shown in Figure 10 C, for example, the polarity of display panels shown in Figure 6 of the present invention distributes, and its first horizontal line has a Potential distribution and is (00+, 3F-, 00+, 3F+, 00-, 3F-, 00+, 3F-, 00-, 3F+, ...), and second horizontal line has a Potential distribution for (3F-, 00+, 3F-, 00-, 3F+, 00+, 3F-, 00+, 3F+, 00-...) etc.When its display panels (supposing that this panel has 1024 * 768 picture elements, has 3 sub-picture elements in each picture element) had circuit structure as Fig. 4, the first horizontal electric current I g_total and the Ic_total of Figure 10 C distinctly were:

$\mathrm{Ig}\_\mathrm{total}=\frac{(3{\mathrm{<figure-callout\; id="00"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{00+}+3{\mathrm{<figure-callout\; id="3F"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{3F-}+2{\mathrm{Ig}}_{00-}+2{\mathrm{<figure-callout\; id="3F"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{3F+})}{\mathrm{Zst}}\&times;307+\frac{({\mathrm{<figure-callout\; id="00"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{00+}+{\mathrm{<figure-callout\; id="3F"\; label="Ig"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ig</figure-callout>}}_{3F-})}{\mathrm{Zst}}=\frac{33610}{\mathrm{Zst}}$

$\mathrm{Ic}\_\mathrm{total}=\frac{(3{\mathrm{<figure-callout\; id="00"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{00+}+3{\mathrm{<figure-callout\; id="3F"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{3F-}+2{\mathrm{Ic}}_{00-}+2{\mathrm{<figure-callout\; id="3F"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{3F+})}{\mathrm{Zlc}}\&times;307+\frac{({\mathrm{<figure-callout\; id="00"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{00+}+{\mathrm{<figure-callout\; id="3F"\; label="Ic"\; filenames="A200410004846.900261.png"\; state="\{\{state\}\}">Ic</figure-callout>}}_{3F-})}{\mathrm{Zlc}}=\frac{1354.8}{\mathrm{Zlc}}$

Can find, electric current I g_total of the present invention and Ic_total are all little than existing known electric current I g_total and Ic_total.

In sum, the source electrode drive circuit that is used for a display panels proposed by the invention, can solve effectively in the prior art, the excessive pressure drop that causes of the electric current I g_total of the electric current I c_total of common voltage Vcom and gate voltage Vg, and can solve the problem of brightness irregularities and block inequality (shadowing bank) in the display panels.

The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims (16)

1, a kind of source electrode drive circuit of display panels is characterized in that it comprises:

One data receives and working storage, in order to receive an input data;

An one displacement working storage and a line phase locking unit, wherein this displacement working storage is in order to temporary in proper order in this line phase locking unit with this input data, and wherein this line phase locking unit is connected to this data reception and working storage and this displacement working storage, in order to receive this input data and in addition parallel processing, to obtain first signal of video signal;

One potential shift device is connected to this line phase locking unit, in order to the input that receives this first signal of video signal and adjust its current potential, to obtain one second signal of video signal;

One random numerical control system circuit;

One numerical digit is changeed analogy converter, be connected to this potential shift device and this unrest numerical control system circuit, in order to receiving this second signal of video signal, and, this second signal of video signal is processed into a random number polarity distribution signal of video signal according to the received random numerical control system signal of this unrest numerical control system circuit; And

One output buffer, being connected to this numerical digit changes analogy converter and this unrest numerical control system circuit, counts polarity distribution signal of video signal and this unrest numerical control system signal in order to receive this unrest, is processed into an image output data should unrest to count polarity distribution signal of video signal;

Wherein this display panels has most horizontal lines in order to receiving a driving of a gate drive signal, and most perpendicular line are connected to this output buffer, in order to receive from this image output data of this output buffer input;

Wherein should unrest numerical control system signal can be so that this image output data has a random number polarity and distributes.

2, the source electrode drive circuit of display panels according to claim 1, it is characterized in that wherein counting in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, be that a random number horizontal line polarity distributes, and adjacent two horizontal those horizontal line polarity distribute opposite fully.

3, the source electrode drive circuit of display panels according to claim 1, it is characterized in that wherein counting in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, be that a random number horizontal line polarity distributes, and on each those horizontal line in all most sub-pixels, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

4, the source electrode drive circuit of display panels according to claim 1, it is characterized in that wherein counting in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, combination for most particular polarity distributions, and in all most sub-pixels that each those particular polarity distribute, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

5, the source electrode drive circuit of display panels according to claim 1, it is characterized in that wherein counting in the polarity distribution in this unrest, one of them arrives K-1 bar (K＞1 under it when those horizontal lines, K is a positive integer) when this horizontal line has this first horizontal line polarity distribution, K bar under it all has one second horizontal line polarity to this level of 2K bar and distributes, and wherein this second horizontal line polarity distributes and distributes fully opposite with this first horizontal line polarity.

6, the source electrode drive circuit of display panels according to claim 5 is characterized in that wherein counting in the polarity distribution in this unrest, and this first horizontal line polarity is distributed as a random number horizontal line polarity and distributes.

7, the source electrode drive circuit of display panels according to claim 5, it is characterized in that wherein counting in the polarity distribution in this unrest, this first horizontal line polarity is distributed as a random number horizontal line polarity and distributes, and on each those horizontal line in all most sub-pixels, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

8, the source electrode drive circuit of display panels according to claim 5, it is characterized in that wherein counting in the polarity distribution in this unrest, this first horizontal line polarity is distributed as the combination that most particular polarity distribute, and in all most sub-pixels that this particular polarity distributes, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

9, a kind of source driving method of display panels, wherein this display panels has most horizontal lines, it is characterized in that this source driving method may further comprise the steps:

Receive an input data;

One random numerical control system signal is provided, has the image output data that a random number polarity distributes so that this input data is processed into; And

Use this image output data to drive the one source pole of this display panels.

10, the source driving method of display panels according to claim 9, it is characterized in that wherein counting in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, be that a random number horizontal line polarity distributes, and adjacent two horizontal those horizontal line polarity distribute opposite fully.

11, the source driving method of display panels according to claim 9, it is characterized in that wherein counting in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, be that a random number horizontal line polarity distributes, and on each those horizontal line in all most sub-pixels, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

12, the source driving method of display panels according to claim 9, it is characterized in that wherein counting in the polarity distribution in this unrest, horizontal line polarity on each those horizontal line distributes, combination for most particular polarity distributions, and in all most sub-pixels that each those particular polarity distribute, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

13, the source driving method of display panels according to claim 9, it is characterized in that wherein counting in the polarity distribution in this unrest, one of them arrives K-1 bar (K＞1 under it when those horizontal lines, K is a positive integer) when this horizontal line has this first horizontal line polarity distribution, K bar under it all has one second horizontal line polarity to this level of 2K bar and distributes, and wherein this second horizontal line polarity distributes and distributes fully opposite with this first horizontal line polarity.

14, the source driving method of display panels according to claim 13 is characterized in that wherein counting in the polarity distribution in this unrest, and this first horizontal line polarity is distributed as a random number horizontal line polarity and distributes.

15, the source driving method of display panels according to claim 13, it is characterized in that wherein counting in the polarity distribution in this unrest, this first horizontal line polarity is distributed as a random number horizontal line polarity and distributes, and on each those horizontal line in all most sub-pixels, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

16, the source driving method of display panels according to claim 13, it is characterized in that wherein counting in the polarity distribution in this unrest, this first horizontal line polarity is distributed as the combination that most particular polarity distribute, and in all most sub-pixels that this particular polarity distributes, the number with those sub-pixels of positive polarity equals to have a number of those sub-pixels of negative polarity.

Images