CN102568404B

CN102568404B - Time schedule controller, source electrode and panel driving device, display device and driving method

Info

Publication number: CN102568404B
Application number: CN201010616040.0A
Authority: CN
Inventors: 徐锦鸿; 张郁敏
Original assignee: Novatek Microelectronics Corp
Current assignee: Novatek Microelectronics Corp
Priority date: 2010-12-30
Filing date: 2010-12-30
Publication date: 2014-12-17
Anticipated expiration: 2030-12-30
Also published as: CN102568404A

Abstract

The invention discloses a source electrode driving device, which is capable of shortening standby time, thereby, power consumption is saved. The source electrode driving device comprises a plurality of source electrode drivers connected in series. The source electrode drivers comprise one to more than one tandem source electrode drivers. The tandem source electrode drivers comprise one to more than one first tandem source electrode drivers. Every first tandem source electrode driver is started through configuration by a pulse signal sent out by the previous source electrode driver at the time which is different from other tandem source electrode drivers, and the triggering of a picture signal is received after every first tandem source electrode drivers are started so as to receive picture data to which the source electrode drivers respectively belong to in the picture signal. One of the source electrode drivers is used for generating a pulse signal so as to start the next source electrode driver after receiving the picture data to which the source electrode driver belongs.

Description

Time schedule controller, source electrode and board driving mchanism, display device and driving method

Technical field

The present invention relates to a kind of driving method of display panels, drive unit and serial connection source electrode driver, in particular to a kind of stand-by time by reducing receiver in drive unit, reduce the driving method of the display panels of power consumption, drive unit and serial connection source electrode driver.

Background technology

Along with high resolving powerization and many GTGizations of liquid crystal indicator, volume of transmitted data in board driving mchanism between time schedule controller and source electrode driver sharply increases, cause the problems such as number of, lines, power consumption and electromagnetic interference (EMI) (electromagnetic interference, EMI) explode.For this reason, industry proposes differential little amplitude interface, also be the differential signaling of amount of decrease (Reduced Swing Differential Signaling, or mini low voltage differential signaling (mini Low-Voltage Differential Signaling RSDS), mini-LVDS) interface, to solve the problems such as above-mentioned number of, lines, power consumption.

Fig. 1 is the schematic diagram of the mini low voltage differential signaling interface 100 in traditional panel drive unit.In mini low voltage differential signaling interface 100, comprise source electrode driver 120_1 ~ 120_4 that time schedule controller 110 and multiple (at this for four) are connected in series mutually, wherein source electrode driver 120_1 ~ 120_4 can comprise receiver 130_1 ~ 130_4, converting unit 140_1 ~ 140_4 and transmitter 150_1 ~ 150_4 respectively.

Time schedule controller 110 is configured to generation one picture signal FRM, and this picture signal FRM is in order to provide picture data to source electrode driver 120_1 ~ 120_4.In addition, time schedule controller 110 also produces a system sequence and produces signal SYS, and it is for controlling the time sequential routine of source electrode driver 120_1 ~ 120_4.Receiver 130_1 ~ the 130_4 of source electrode driver 120_1 ~ 120_4 then can receive picture data belonging to difference in the middle of picture signal FRM sequentially respectively, received picture data is then converted to source drive signal VS_1 ~ VS_4 by converting unit 140_1 ~ 140_4, and source drive signal VS_1 ~ VS_4 is then sent to the pixel cell on a display panels by transmitter 150_1 ~ 150_4.In addition, after receiver 130_1 ~ 130_3 receives data, transmitter 150_1 ~ 150_3 also can send enabling signal SP1 ~ SPN respectively and start to receive data with trigger receptors 130_2 ~ 130_4 to receiver 130_2 ~ 130_4.

Fig. 2 is the sequential chart of coherent signal in mini low voltage differential signaling interface 100 in Fig. 1, to be further explained aforesaid operations.It should be noted that picture signal FRM comprises one to multiple group of (explaining with three groups at this) differential wave LV1, LV2, LV3, it is provided to the receiver 130_1 ~ 130_4 of source electrode driver 120_1 ~ 120_4 together.Each group in the middle of differential wave LV1, LV2, LV3 all comprises multiple data segments DATA, utilizes a blank section BLK to separate respectively.In addition, at least one group in the middle of differential wave, for example that differential wave LV1 has more a replacement instruction section RST, its position is after producing the synchronous blank section BLK of signal SYS with system sequence, after starting for source electrode driver 120_1 ~ 120_4, the reception sequential of synchronous receiver 130_1 ~ 130_4, with the delay error problem avoiding the transmission range difference of picture signal FRM to cause.

Fig. 3 is for driving flow process 30 for illustration of carry out in the mini low voltage differential signaling interface 100 in Fig. 1 one.Please also refer to Fig. 1 ~ 3 to understand the running of mini low voltage differential signaling interface 100.First, after flow process starts (step 300), time schedule controller 110 produces signal SYS according to system sequence, produces picture signal FRM (step 302).Next, source electrode driver 120_1 ~ 120_4, after receiver 130_1 ~ 130_4 receiving system sequential produces the positive edge of a pulse of signal SYS, all starts to a holding state (step 304).After a while, receiver 130_1 ~ 130_4 can receive and reset instruction section RST, and therefore by starting respective internal reception clock pulse, synchronously it receives sequential (step 306).

Next, because pulse signal SP0 is fixed as noble potential, therefore receiver 130_1 can just start to receive data segments DATA (step 308) after reception resets instruction section RST.But other source electrode driver is maintained electronegative potential because of respective pulse signal SP1, SP2 and SP3, therefore keeps holding state and does not receive any data.

After receiver 130_1 completes data receiver, transmitter 150_1 will send pulse signal SP1 (step 310), start to receive data (step 312) with the receiver 130_2 triggering next stage source electrode driver 120_2, and after completing data receiver, transmitter 150_2 will send pulse signal SP2 (step 332).Similarly, after receiver 130_2 reception data complete, transmitter 150_2 produces pulse signal SP2 and starts data receiver (step 313) to trigger next stage receiver 130_3, and finishes receiving rear transmitter 150_3 and can produce pulse signal SP3 (step 333).Similarly, after receiver 130_3 reception data complete, transmitter 150_3 can produce pulse signal SP3 and start data receiver (step 314), until data receiver completes to trigger next stage receiver 130_4.

Next, when next positive edge that system sequence produces signal SYS occurs, data segments DATA received separately can be converted to source drive signal VS_1 ~ VS_4 (step 340) by the converter 140_1 ~ 140_4 of source electrode driver 120_1 ~ 120_4 simultaneously respectively.Finally, when the negative edge that system sequence produces signal SYS occurs, transmitter 550_1 ~ the 550_4 of source electrode driver 120_1 ~ 120_4 can send source electrode drive singal VS_1 ~ VS_4 to the pixel cell (step 350) on display panels, so flow process terminates (step 360).

Comprehensively above-mentioned, receive in the process of the corresponding part of the data segments in picture signal FRM, to receive the object of affiliated picture data one by one at different time in order to reach receiver 130_1 ~ 130_4, after arranging the triggering of source electrode driver 120_1 ~ 120_4 respectively via pulse signal SP0 ~ SP3, just start to carry out data receiver, and except pulse signal SP0 perseverance is fixed as except noble potential, pulse signal SP1 ~ SP3 just produces respectively after receiver 130_1 ~ 130_3 completes the corresponding part receiving its data.

But, in above-mentioned flow process, start even if namely receiver 130_2 ~ 130_4 is all produced signal SYS by system sequence as far back as time point t1, but still must wait until after the last source electrode driver of time point t2, t3, t4 completes data receiver respectively, the triggering that just can be subject to pulse signal SP1, SP2, SP3 starts to capture data.In other words, there is standby period P2, P3, P4, period receiver 130_2 ~ 130_4 only consumes electric energy and without any function of execution, result wastes many electric energy.Therefore, real necessity having improvement of existing driving flow process 30.

Summary of the invention

Technical matters to be solved by this invention is to provide a kind of source electrode driving device, board driving mchanism, time schedule controller, display device and driving method, and it can be eliminated stand-by time and effectively save electric energy.

For solving the problems of the technologies described above, according to an aspect of the present invention, a kind of source electrode driving device is provided, comprise multiple source electrode driver be connected in series mutually, it comprises one or more serial connection source electrode driver, this one or more serial connection source electrode driver comprises one or more first kind serial connection source electrode driver, in the middle of each be configured, to be connected in series the source electrode driver not identical time with other first kind, the pulse signal sent out according to previous source electrode driver is respectively done to start, and the triggering receiving a picture signal is upon actuation with the picture data belonging to receiving in this picture signal respectively, wherein said source electrode driver produces a pulse signal to start next stage source electrode driver after receiving the picture data belonging to it.

According to a further aspect in the invention, provide a kind of board driving mchanism, comprise above-mentioned source electrode driving device; And time schedule controller, it is coupled to this source electrode driving device, and is configured to produce this picture signal to be sent to the described source electrode driver in the middle of this source electrode driving device, produces multiple source drive signal.

According to a further aspect in the invention, provide a kind of display device, comprise above-mentioned board driving mchanism; And a panel, in order to receive the driving of this Display panel drive unit with display frame.

According to a further aspect in the invention, provide a kind of time schedule controller, comprise a system sequence signal generator and divide, it is configured to generation one system sequence and produces signal; And a picture signal generating portion, it is configured to generation one and produces the synchronous picture signal of signal with this system sequence, this picture signal comprises the picture data belonging to multiple source electrode driver difference, and in order to trigger one or more serial connection source electrode driver in the middle of described source electrode driver in proper order, receive the picture data belonging to distinguishing to make this one or more serial connection source electrode driver at different time.

According to a further aspect in the invention, a kind of driving method for display device is provided, this display device comprises multiple source electrode driver be connected in series mutually, described source electrode driver comprises one or more first kind serial connection source electrode driver, this driving method comprises and utilizes a picture signal to trigger this one or more first kind serial connection source electrode driver in proper order, with the picture data belonging to receiving respectively at different time in this picture signal; And when each except the last of described source electrode driver is after receiving the picture data belonging to it, utilize this source electrode driver to produce a pulse signal to start next source electrode driver.

The entry condition of source electrode driving device adjustment serial connection source electrode driver of the present invention and trigger condition, and the Equations of The Second Kind added in picture signal accordingly for triggering resets instruction section, source electrode driver is started in proper order and non-concurrent starts, and the triggering that can be subject to previous stage source electrode driver after start-up is immediately to receive data, to reach the object reducing power consumption.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the mini low voltage differential signaling interface of prior art one.

Fig. 2 is the sequential chart of the coherent signal of the mini low voltage differential signaling interface of Fig. 1.

Fig. 3 is the schematic diagram that one of the mini low voltage differential signaling interface of Fig. 1 drives flow process.

Fig. 4 is the schematic diagram according to embodiment one board driving mchanism.

Fig. 5 is the schematic diagram of one source pole drive unit in the board driving mchanism according to Fig. 4 of an embodiment.

Fig. 6 A is the sequential chart of the coherent signal of the board driving mchanism of Fig. 5 of foundation one embodiment.

Fig. 6 B is the picture signal of Fig. 6 A and the graph of a relation of clock pulse signal of foundation one embodiment.

Fig. 6 C is the schematic diagram that one of the source electrode driving device of Fig. 5 of foundation one embodiment drives flow process.

Fig. 7 is the sequential chart of the coherent signal of the board driving mchanism of Fig. 5 of foundation one alternate embodiment.

Fig. 8 is the sequential chart that one of the board driving mchanism of Fig. 5 of foundation one embodiment drives flow process.

Fig. 9 is the schematic diagram of the source electrode driving device of Fig. 5 of foundation one alternate embodiment.

Figure 10 is the schematic diagram of a control flow of the source electrode driving device of Fig. 9 of foundation one embodiment.

Wherein, description of reference numerals is as follows:

100 mini low voltage differential signaling interfaces

110,420 time schedule controllers

120_1,120_2,120_3,120_4 source electrode driver

130_1,130_2,130_3,130_4,530_1, receiver

530_2、530_N

140_1,140_2,140_3,140_4,540_1, converting unit

540_2、540_N

150_1,150_2,150_3,150_4,550_1, transmitter

550_2、550_N

30 drive flow process

300,302,304,306,308,310,312, step

332、313、314、340、350、360、600、

601、602、608、630_1、610_2、620_2、

630_2、610_3、630_N-1、610_N、

620_N、640、650、1001、1002、1004、

1006、1008、1010、1012、1014、1016、

1018

40 display device

400 board driving mchanisms

410 source electrode driving devices

422 system sequence signal generators divide

424 picture signal generating portions

450 panels

The preposition source electrode driver of 520_1

520_2,520_2,520_N first kind serial connection source electrode driver

1000 control flows

SYS system sequence produces signal

FRM picture signal

LV1, LV2, LV3, LVM differential wave

The blank section of BLK

CLK clock pulse signal

SKEW1, SKEW2 time delay

RST resets instruction section

The RST1 first kind resets instruction section

RST2 Equations of The Second Kind resets instruction section

DATA, DATA1, DATA2, DATA3, data segments

DATA4、Data

SP0, SP1, SP2, SP3, SPN-1 pulse signal

VS_1, VS_2, VS_3, VS_4, VS1, source drive signal

VS2、VSN-1、VSN

T1, t2, t3, t4 time point

P2, P3, P4 standby period

Embodiment

In source drive technology disclosed by this, serial connection source electrode driver can start the non-concurrent to holding state one by one at different time and start to holding state, and in startup to holding state, receives immediately and trigger to start to receive picture data.So the stand-by time that serial connection source electrode driver receives data from starting to can significantly reduce, thus can solve the receiver standby problem causing power consumption for a long time in the source electrode driver of connecting in prior art.

Below will enumerate several embodiment, central by changing the entry condition and trigger condition that are connected in series source electrode driver, and additionally at the section that picture signal access control triggers, make a serial connection source electrode driver must after previous stage source electrode driver data receiver completes, just can receive the startup of previous stage source electrode driver to enter holding state, and the triggering of picture signal can be received upon actuation immediately, to start to carry out data receiver.

Please also refer to Fig. 4 and Fig. 5.Fig. 4 is the schematic diagram of the display device 40 according to an embodiment, and Fig. 5 is then the schematic diagram of the source electrode driving device 410 shown in the Fig. 4 according to an embodiment.First please refer to Fig. 4, display device 40 comprises board driving mchanism 400 and a panel 450.Board driving mchanism 400 comprises time schedule controller 420 and one source pole drive unit 410.Time schedule controller 420 can comprise a system sequence signal generator and divide 422 and a picture signal generating portion 424, is used for generation one system sequence respectively to produce signal SYS and and produce the synchronous picture signal FRM of signal SYS with system sequence.System sequence produces the time sequential routine that signal SYS is mainly used in controlling source electrode driving device 410, and picture signal FRM is main then for providing picture data, and additionally provides trigger source electrode driving device 410 to receive the effect of picture data.

Transmission between time schedule controller 420 and source electrode driving device 410 preferably meets a mini low voltage differential signaling interface, to reduce number of, lines, power consumption and electromagnetic interference (EMI).Certainly, also can be applied to any source electrode driving device with other type of series architecture, and be not limited to mini low voltage differential signaling interface.

Please go to reference to figure 5, it is the schematic diagram of one source pole drive unit in the board driving mchanism according to Fig. 4 of an embodiment.As shown in Figure 5, source electrode driving device 410 comprises a preposition source electrode driver 520_1 and first kind serial connection source electrode driver 520_2 ~ 520_N (N is a positive integer).These source electrode drivers 520_1 ~ 520_N is respectively used to produce signal SYS and picture signal FRM according to system sequence and produces source drive signal VS1 ~ VSN for driving panel 450.More careful, in each source electrode driver 520_1 ~ 520_N, receiver 530_1 ~ 530_N configuration receives picture data belonging to difference in the middle of picture signal FRM, received picture data is then converted to source drive signal VS1 ~ VSN by converting unit 540_1 ~ 540_N, and source drive signal VS1 ~ VSN is then sent to the pixel cell on panel 450 by transmitter 550_1 ~ 150_N.In addition, after receiver 530_1 ~ 530_N-1 receives data, transmitter 550_1 ~ 5150_N-1 also can send enabling signal SP1 ~ SPN-1 respectively to next stage receiver 530_2 ~ 530_N.It should be noted that in other embodiments, can directly produce enabling signal SP1 ~ SPN-1 after receiver 530_1 ~ 530_N-1 receives data, and must do not sent by transmitter 550_1 ~ 5150_N-1.

Specifically, preposition source electrode driver 520_1 produces signal SYS according to system sequence and starts to holding state, and after the triggering receiving picture signal FRM, the picture data belonging to starting to receive in picture signal FRM.And it is different with trigger condition from the startup of preposition source electrode driver 520_1, first kind serial connection source electrode driver 520_2 ~ 520_N is then that the pulse signal (SP1 ~ SP_N-1) sent out according to previous source electrode driver starts to holding state, and the triggering in proper order of picture signal FRM can be received, to receive the picture data in picture signal FRM belonging to difference one by one at different time.In addition, except the first kind serial connection source electrode driver 520_N of most end, source electrode driver 520_1 ~ 520_N-1, after receiving the picture data belonging to it, produces pulse signal SP1 ~ SP_N-1 respectively to next source electrode driver.After source electrode driver 520_1 ~ 520_N completes data receiver, system sequence produces signal SYS further trigger source driver 520_1 ~ 520_N, respectively received picture data be converted to source drive signal VS1 ~ VSN and export.Panel 450 according to source drive signal VS1 ~ VSN, can upgrade the content of pixel, with display frame then.

In other words, the essential difference of the prior art of the present embodiment and Fig. 1 to Fig. 3 is, the entry condition of first kind serial connection source electrode driver 520_2 ~ 520_N is not identical with source electrode driver 120_2 ~ 120_4 of the prior art with trigger condition.In specific words, about entry condition, first kind serial connection source electrode driver 520_2 ~ 520_N no longer produces signal SYS according to system sequence and starts simultaneously, and is started by the pulse signal produced after previous stage source electrode driver completes data receiver.In other words, pulse signal is not used further to trigger the use receiving data, and changes the use of startup into.And about trigger condition, the triggering that first kind serial connection source electrode driver 520_2 ~ 520_N no longer receives previous stage source electrode driver starts to receive data, and change in startup to holding state, trigger to receive data via picture signal FRM immediately.By the change of this startup and trigger condition, each source electrode driver just starts before can being arranged in and will making data receiver respectively, therefore, it is possible to avoid the problem of consuming unnecessary electric energy during holding state starts to data receiver.

For coordinating the change of trigger condition, picture signal FRM this can not only providing source driver 520_1 ~ 520_N respectively belonging to picture data, and also can trigger the source electrode driver 520_1 ~ 520_N of serial connection in proper order, to make the picture data of source electrode driver 520_1 ~ 520_N after different time starts immediately belonging to reception respectively.Easy speech it, the form of the picture signal FRM that time schedule controller 420 produces compared to the prior art difference to some extent of Fig. 2, because it additionally possesses the effect that formula in proper order triggers first kind serial connection source electrode driver 520_2 ~ 520_N.

Please refer to Fig. 6 A, Fig. 6 A is the sequential chart producing signal SYS, picture signal FRM and pulse signal SP1 ~ SP_N-1 according to the system sequence in the display device 402 of an embodiment.In fig. 6, system sequence produces signal SYS and comprises multiple pulse wave, and it can start preposition source electrode driver 520_1.Picture signal FRM comprises M group differential wave LV1 ~ LVM (M is a positive integer).In each scan period (system sequence produces between two pulse waves of signal SYS), differential wave LV1 ~ LVM comprises data segments DATA1 ~ DATAN, and it represents the picture data belonging to serial connection source electrode driver 520_2 ~ 520_N difference respectively.And in the middle of differential wave LV1 ~ LVM at least one group, arrange have Equations of The Second Kind to reset instruction section RST2 before data segments DATA2 ~ DATAN respectively, the picture data DATA2 ~ DATAN belonging to receiving for first kind serial connection source electrode driver 520_2 ~ 520_N.In addition, at least one group in the middle of differential wave LV1 ~ LVM, before data segments DATA1, arrange have the first kind to reset instruction section RST1, for triggering the picture data DATA1 belonging to preposition source electrode driver 520_1 reception respectively.

Compared to the sequential chart of the prior art of Fig. 1, adds additional multiple Equations of The Second Kind between every two the blank section BLK of picture signal FRM of Fig. 6 A and reset instruction section RST2.These Equations of The Second Kinds reset instruction section RST2 and continuous print data segments DATA in Fig. 1 are cut into multiple data segments DATA2 ~ DATAN, to trigger first kind serial connection source electrode driver 520_2 ~ 520_N sequentially receiving affiliated picture data DATA2 ~ DATAN one by one at different time.Preferably, each pulse signal SP1 ~ SP_N-1 and then Equations of The Second Kind replacement instruction section RST2 can be arranged, therefore start-up time suffered by each serial connection source electrode driver 520_2 ~ 520_N with triggered and start to receive time of data DATA2 ~ DATAN can be quite close, therefore the electric energy that stand-by time can be made to consume significantly reduces compared to prior art.

It should be noted that the sequential chart shown in Fig. 6 A is only a preferred examples, and all different versions can be had, as long as formula first kind serial connection source electrode driver 520_2 ~ 520_N can be triggered in proper order.In addition, the content of Equations of The Second Kind replacement instruction section RST2 can reset with the first kind and indicate section RST1 identical, with simplified design.Also can according to different application, the first kind replacement instruction section RST1 that design content is different and Equations of The Second Kind reset and indicate section RST2.Even Equations of The Second Kind resets instruction section RST2 also can have different contents.

In addition, please refer to Fig. 6 B, it amplifies the picture signal FRM of display Fig. 6 A and the relation of clock pulse signal CLK further, and wherein clock pulse signal CLK is same with picture signal FRM produced by time schedule controller 510.Can it is to be noted that, data segments DATA in the middle of each differential wave (only showing differential wave LV1 at this) of picture signal FRM, can and clock pulse signal CLK between there is a time delay (time skew), and this time delay can be adjusted according to design requirement, to reach preferred display frame.In addition, the time delay SKEW1 to SKEWN (this figure only illustrates SKEW1 and SKEW2) of different source electrode driver 520_1 to 520_N can be designed to identical or different.

For realizing above-mentioned adjustment, mode unlike the prior art can be utilized to carry out modularization design controller 510.For example, can reset in the time interval of instruction section RST2 at Equations of The Second Kind, part or all of time interval Equations of The Second Kind being reset instruction section RST2 replaces to blank (BLANK) region, adjusts the time delay between clock pulse signal CLK and data segments DATA.Different source electrode drivers also can have different time delays each other.It should be noted that, no matter be conventional source driver (i.e. existing source electrode driver or the following Equations of The Second Kind serial connection source electrode driver that will state) or first kind serial connection source electrode driver, all can be configured to provide time delays different between different source electrode driver by time schedule controller, to reach preferred display frame.

The driving flow process 60 of Fig. 6 C for carrying out when arranging in pairs or groups the time sequential routine of Fig. 6 A for illustration of the source electrode driving device 410 shown in Fig. 5, to further illustrate the principle of operation of Fig. 4 and Fig. 5 shown device.Please also refer to Fig. 4 to Fig. 6 A and 6C to understand the running of source electrode driving device 410.First, after flow process starts (step 600), the system sequence that picture signal generating portion 424 divides 422 to produce according to system sequence signal generator produces signal SYS, produces picture signal FRM (step 601).

Next, the receiver 530_1 of preposition source electrode driver 520_1, after the positive edge of a pulse of receiving system sequential generation signal SYS, starts to a holding state (step 602).After a while, the receiver 530_1 of preposition source electrode driver 520_1 resets instruction section RST1 and after starting an internal reception clock pulse receiving the first kind, because pulse signal SP0 is fixed as noble potential, therefore receiver 130_1 starts to receive data segments DATA1 (step 608).But other first kind serial connection source electrode driver 520_2 ~ 520_N still not yet starts.

Next, after the receiver 530_1 of preposition source electrode driver 520_1 completes data receiver, the pulse signal SP1 (step 630_1) of noble potential will be sent, therefore start receiver 530_2 to holding state (step 610_2) of next stage source electrode driver 520_2.After receiver 530_2 enters holding state, start to receive data segments DATA2 (step 620_2) with receiving after Equations of The Second Kind replacement indicates the triggering of section RST2, then after completing data receiver, send the pulse signal SP2 (step 630_2) of noble potential.

Similarly, after the receiver 530_3 to 530_N of what first kind serial connection source class driver 520_3 to 520_N sequentially completes data receiver by previous stage source electrode driver afterwards, just be subject to the startup (step 610_3 to 610_N) of pulse signal SP2_SPN-1 one by one, and after start-up with being subject to starting to receive data segments DATA3 to DATAN (step 620_3 to 620_N) after Equations of The Second Kind replacement indicates the triggering of section RST2, and except a most end first kind serial connection source class driver 520_N, each serial connection source class driver 520_3 to 520_N-1 can send the pulse signal SP3 to SPN-1 (step 630_3 to 630_N-1) of noble potential after completing data receiver.

Next, when next positive edge that system sequence produces signal SYS occurs, data segments DATA1 to DATAN received separately can be converted to source drive signal VS1 ~ VSN (step 640) by the converter 540_1 ~ 540_N of source electrode driver 520_1 ~ 520_N simultaneously respectively.Finally, when the negative edge that system sequence produces signal SYS occurs, transmitter 550_1 ~ the 550_N of source electrode driver 520_1 ~ 520_N can send source electrode drive singal VS1 ~ VSN to the pixel cell (step 650) on display panels, so flow process terminates (step 660).

Comprehensively above-mentioned, each in the middle of first kind serial connection source electrode driver 520_2 ~ 520_N must after previous stage source electrode driver completes data receiver, just can receive the pulse signal SP1 ~ SPN of noble potential to enter holding state from previous stage source electrode driver, and the Equations of The Second Kind that can receive picture signal SYS upon actuation immediately resets the triggering of section RST2, to start to carry out data receiver.Thus, the stand-by time that first kind serial connection source electrode driver 520_2 ~ 520_N receives data from starting to significantly reduces.

It is noted that, in Fig. 5, the first kind serial connection source electrode driver 520_2 ~ 520_N of part can be connected in series source electrode driver replacement by Equations of The Second Kind, to be divided into groups by source electrode driver, and then reduces the number that Equations of The Second Kind resets instruction section RST2.The first kind is connected in series source electrode driver with Equations of The Second Kind can be arranged to any required number each other, and is connected in series mutually in any mode of assigning.Each in the middle of Equations of The Second Kind source electrode driver is similar to the operation of preposition source electrode driver 520_1, can operate according to following step:

Produce the pulse wave of signal SYS according to system sequence, enter holding state;

Reset instruction section RST1 according to the first kind, synchronously receive sequential;

Touching of the pulse signal (one of SP1 ~ SP_N-1) sent out at previous source electrode driver

After sending out, start to receive the picture data in data segments (one of DATA2 ~ DATAN) belonging to difference;

And after data receiver completes, produce a pulse signal to next stage source electrode driver.

For example, suppose N=4, and the first kind serial connection source electrode driver 520_2,520_4 are replaced by Equations of The Second Kind serial connection source electrode driver, then the signal timing diagram can arranged in pairs or groups as shown in Figure 7 operates.In the figure 7, first group of source electrode driver comprises preposition source electrode driver 520_1 and is connected in series source 520_2,520_4 with two Equations of The Second Kinds and produces a pulse wave of signal SYS according to system sequence and start simultaneously, and reset the next synchronous sequential of instruction section RST1 according to the first kind, then in proper order the triggering of return pulse signal SP0 (not showing, is set potential), SP1 and SP3 to receive data segments DATA1, DATA2 and DATA4 one by one at different time.Comparatively speaking, after Equations of The Second Kind serial connection source electrode driver 520_3 then waits until that a serial connection source electrode driver 520_2 reception data DATA2 completes, the pulse signal SP2 that reception serial connection source electrode driver 520_2 produces does to start, and the triggering receiving Equations of The Second Kind replacement instruction section RST2 immediately starts to receive data segments DATA3.Thus, source electrode driver 520_3 does not start before source electrode driver 520_1,520_2 complete data, and result is compared to prior art, and the allocation plan of this embodiment still can reduce power consumption.

In other words, the picture signal FRM of Fig. 7 is designed to the compromise of the picture signal FRM design of Fig. 2 and Fig. 6 A, and its number that Equations of The Second Kind also can be avoided while reducing receiver power consumption to reset instruction section RST2 rolls up the degree to packed data section DATA1 ~ DATA4.Therefore, replace with Equations of The Second Kind serial connection source electrode driver by the first kind being connected in series source electrode driver, board driving mchanism 400 according to different application, can adjust it and drives flow process, power consumption, picture signal FRM, to meet the different needs.In addition, the hardware implementing that preposition source electrode driver 520_1, first kind serial connection source electrode driver and Equations of The Second Kind serial connection source electrode driver 520_2 ~ 520_N can be identical, therefore also can possess the easy advantage of design.

It should be noted that, sequential chart shown in Fig. 7 is only a preferred examples, and all different versions can be had, as long as can formula trigger first kind serial connection source electrode driver and start preposition source electrode driver and be connected in series source electrode driver with Equations of The Second Kind in proper order simultaneously.In addition, the first kind and Equations of The Second Kind reset and indicate the content of section RST1 and RST2 also can have all different contents according to design, also may be the same or different each other.

The operation of the board driving mchanism 400 of Fig. 4 to Fig. 7 can be summarized as a driving flow process 80, as shown in Figure 8.Flow process 80 is driven to comprise the following step:

Step 800: start.

Step 802: time schedule controller 420 produces system sequence and produces signal SYS and picture signal FRM.

Step 804: preposition source electrode driver 520_1 produces signal SYS according to system sequence and does to start, and after the triggering receiving first kind replacement instruction section RST1 in picture signal FRM, picture data belonging to starting to receive in picture signal FRM, and after receiving data, produce a pulse signal.

Step 806: the pulse signal that first kind serial connection source electrode driver 520_2 ~ 520_N sends out according to previous source electrode driver is done to start, and after receiving the triggering in proper order of Equations of The Second Kind replacement instruction section RST2 in picture signal, receive the picture data in picture signal FRM belonging to difference one by one at different time, and each leisure all produces a pulse signal after receiving data.

Step 808: source electrode driver 520_1 ~ 520_N produces the triggering of signal SYS according to system sequence, is converted to other source drive signal VS1 ~ VSN respectively and exports by received picture data.

Step 810: terminate.

Drive the specification specified of flow process 80 with reference to aforementioned, can be not repeated herein.

It should be noted that, because preposition source electrode driver 520_1 and the first kind or Equations of The Second Kind serial connection source electrode driver 520_2 ~ 520_N can with identical hardware implementing, therefore multiple universal source driver can be only set, and the function of first kind serial connection source electrode driver is flexibly realized by the change of operator scheme, or realize the function of preposition source electrode driver (being equal to Equations of The Second Kind serial connection source electrode driver), and then reach the object simplifying hardware design, and also can therefrom adjustment System power consumption, drive flow process, to meet different application demands.

As shown in Figure 9, it is the schematic diagram of the source electrode driving device 410 according to another embodiment.In fig .9, be provided with multiple universal source driver 920_1 ~ 920_N, it changes operator scheme according to mode signal MODE_1 ~ MODE_N.Similar with shown in Fig. 5, universal source driver 920_1 ~ 920_N can comprise receiver, converter and transmitter equally respectively to perform similar data receiver, conversion and sending function respectively.

If mode signal MODE_x is set to " 0 ", then universal source driver 920_x operates in " Equations of The Second Kind operator scheme ", represents that corresponding universal source driver 920_x is used to realize preposition source electrode driver (being equal to Equations of The Second Kind serial connection source electrode driver).On the contrary, if mode signal MODE_x is set to " 1 ", then universal source driver 920_x operates in " first kind operator scheme ", represents that universal source driver 920_x is used to realize first kind serial connection source electrode driver.For example, if MODE_1 is set as " 0 ", mode signal MODE_2 ~ MODE_N is all set as " 1 ", the operation of the source electrode driving device of Fig. 9 is by same as shown in Figure 5.

Specifically, the operation of the source electrode driving device 410 of Fig. 9 can be summarized as a control flow 1000, as shown in Figure 10.Control flow 1000 describes the criterion of the operator scheme of universal source driver 920_x (wherein x can be 1 to N), comprises the following step:

Step 1001: start.

Step 1002: time schedule controller 420, according to system sequence signal SYS, produces picture signal FRM, it for example comprises, and the first kind shown in Fig. 6 A resets instruction section RST1, Equations of The Second Kind resets instruction section RST2, blank section BLK and data segments DATA.

Step 1004: mode signal MODE_x=" 1 "? if so, step 1006 is entered to operate in " first kind operator scheme "; Otherwise then jump procedure 1010 is to operate in " Equations of The Second Kind operator scheme ".

Step 1006: the receiver of source electrode driver 920_x, after receiving pulse signal SPx-1, starts to holding state.

Step 1008: the receiver of source electrode driver 920_x, after the triggering receiving Equations of The Second Kind replacement instruction section RST2, starts to receive data segments DATA_x, and jump procedure 1016.

Step 1010: the receiver of source electrode driver 920_x starts to holding state according to system sequence signal, and reset instruction section RST1 according to the first kind of picture signal FRM, come synchronous one and receive sequential.

Step 1012: pulse signal SPx-1=" 1 "? if ("Yes"), enters step 1014; (otherwise "No"), then repeated execution of steps 1012, until pulse signal SPx-1=" 1 ".

Step 1014: the receiver of source electrode driver 920_x according to the triggering of pulse signal SPx-1, and starts to receive data segments DATA_x, and enters step 1016.

Step 1016: after the receiver of source electrode driver 920_x receives data segments DATA_x, transmitter send pulse signal SPx (also namely pulse signal SPx value by " 0 " change into " 1 ").

Step 1018: terminate.

In sum, in the prior art, receiver starts according to system sequence signal simultaneously, but start to its actual start to receive data before stand-by time only consume electric power and non-functional output, do not meet economic benefit significantly.In comparison, the entry condition of above-described embodiment adjustment serial connection source electrode driver and trigger condition, and the Equations of The Second Kind added in picture signal accordingly for triggering resets instruction section, source electrode driver is started in proper order and non-concurrent starts, and the triggering that can be subject to previous stage source electrode driver after start-up is immediately to receive data, to reach the object reducing power consumption.In addition, be Equations of The Second Kind source electrode driver by replacing part first kind source electrode driver further, or switch the operator scheme of universal source driver further by mode signal, to adjust power consumption, the driving flow process of board driving mchanism, to meet different application demands.

Above-described embodiment is by changing triggering and the entry condition of serial connection source electrode driver, and coordinate the change of above-mentioned condition and add extra triggering section at picture signal, make the same time only have a source electrode driver be activated and consume electric energy, and then reach the object reducing power consumption.

The foregoing is only the preferred embodiments of the present invention, all equalizations done according to the claims in the present invention change and modify, and all should belong to covering scope of the present invention.

Claims

1. a source electrode driving device, comprises:

Multiple source electrode driver be connected in series mutually, it comprises:

One or more is connected in series source electrode driver, it comprises one or more first kind serial connection source electrode driver, in the middle of each be configured, to be connected in series the source electrode driver not identical time with other first kind, the pulse signal sent out according to previous source electrode driver is respectively done to start, and the triggering receiving a picture signal is upon actuation with the picture data belonging to receiving in this picture signal respectively

Each except the last of wherein said source electrode driver produces a pulse signal to start next stage source electrode driver after receiving the picture data belonging to it.

2. source electrode driving device as claimed in claim 1, it is characterized in that, described source electrode driver also comprises a preposition source electrode driver, this preposition source electrode driver is coupled to described serial connection source electrode driver, be configured to produce signal according to a system sequence do to start, and upon actuation according to the triggering of this picture signal with the picture data belonging to starting to receive in this picture signal.

3. source electrode driving device as claimed in claim 1, it is characterized in that, described serial connection source electrode driver also comprises one or more Equations of The Second Kind serial connection source electrode driver, be configured to produce signal according to a system sequence start simultaneously, and synchronously receive sequential according to this picture signal after starting at the same time.

4. source electrode driving device as claimed in claim 3, is characterized in that, at least one in the middle of described serial connection source electrode driver also receives a mode signal to switch to this first kind serial connection source electrode driver or this Equations of The Second Kind serial connection source electrode driver.

5. a board driving mchanism, comprises:

Source electrode driving device according to claim 1; And

Time schedule controller, it is coupled to this source electrode driving device, and is configured to produce this picture signal to be sent to the described source electrode driver in the middle of this source electrode driving device, produces multiple source drive signal.

6. board driving mchanism as claimed in claim 5, it is characterized in that, this picture signal comprises one or more differential wave, and each in the middle of described differential wave comprises multiple data segments; And at least one in the middle of described differential wave also comprises one or more Equations of The Second Kind replacement instruction section respectively, in the middle of each lays respectively at described data segments before one of them, the data segments belonging to receiving for the corresponding person triggered in the middle of this one or more first kind serial connection source electrode driver.

7. board driving mchanism as claimed in claim 5, it is characterized in that, described source electrode driver also comprises a preposition source electrode driver, this preposition source electrode driver couples mutually with the described source electrode driver that is connected in series, wherein this time schedule controller also produces a system sequence and produces signal, for starting this preposition source electrode driver, and wherein this picture signal comprises one or more differential wave, at least one in the middle of described differential wave also comprises a first kind replacement instruction section, for triggering the picture data belonging to this preposition source electrode driver reception.

8. board driving mchanism as claimed in claim 5, it is characterized in that, described serial connection source electrode driver also comprises one or more Equations of The Second Kind serial connection source electrode driver, and central each is coupled at least one in the middle of this one or more first kind serial connection source electrode driver; Wherein this time schedule controller also produces a system sequence and produces signal, for starting this one or more Equations of The Second Kind serial connection source electrode driver simultaneously.

9. board driving mchanism as claimed in claim 8, is characterized in that, at least one in the middle of described serial connection source electrode driver also receives a mode signal to switch to this first kind serial connection source electrode driver or this Equations of The Second Kind serial connection source electrode driver.

10. board driving mchanism as claimed in claim 5, it is characterized in that, this time schedule controller also produces a clock pulse signal, has other time migration between the picture data belonging at least one in the middle of source electrode driver described in this clock pulse signal and this picture signal.

11. 1 kinds of display device, comprise:

Board driving mchanism according to claim 5; And

One panel, in order to receive the driving of this Display panel drive unit with display frame.

12. 1 kinds of display device, comprise:

Multiple serial connection source electrode driver, it is configured to start to holding state one by one at different time, and central each receives triggering respectively to start to receive picture data in startup to holding state; And

Time schedule controller, it is configured to provide this picture data, and any one respectively in the middle of described serial connection source electrode driver starts to holding state, triggers this serial connection source electrode driver and receives this picture data.

13. 1 kinds of time schedule controllers, comprise:

One system sequence signal generator divides, and it is configured to generation one system sequence and produces signal; And a picture signal generating portion, it is configured to generation one and produces the synchronous picture signal of signal with this system sequence, this picture signal comprises the picture data belonging to multiple source electrode driver difference, and in order to trigger one or more serial connection source electrode driver in the middle of described source electrode driver in proper order, receive the picture data belonging to distinguishing to make this one or more serial connection source electrode driver at different time.

14. time schedule controllers as claimed in claim 13, it is characterized in that, this picture signal comprises one or more differential wave, each in the middle of described differential wave comprises multiple data segments, and at least one in the middle of described differential wave also comprises one or more Equations of The Second Kind replacement instruction section respectively, in the middle of each lays respectively at described data segments before one of them, for triggering a corresponding person in the middle of this one or more serial connection source electrode driver to receive affiliated data segments.

15. time schedule controllers as claimed in claim 13, it is characterized in that, this timing control signal is for starting the preposition source electrode driver in the middle of described source electrode driver, and wherein this picture signal comprises one or more differential wave, at least one in the middle of described differential wave comprises a first kind replacement instruction section, in order to trigger the data segments belonging to this preposition source electrode driver reception.

16. time schedule controllers as claimed in claim 13, it is characterized in that, this time schedule controller also produces a clock pulse signal, has other time migration between the picture data belonging at least one in the middle of source electrode driver described in this clock pulse signal and this picture signal.

17. 1 kinds of driving methods for display device, this display device comprises multiple source electrode driver be connected in series mutually, described source electrode driver comprises one or more first kind serial connection source electrode driver, this driving method comprises: utilize a picture signal to trigger this one or more first kind serial connection source electrode driver in proper order, to receive picture data affiliated in this picture signal respectively at different time; And when each except the last of described source electrode driver is after receiving the picture data belonging to it, utilize this source electrode driver to produce a pulse signal to start next source electrode driver.

18. as claimed in claim 17 for the driving method of display device, it is characterized in that, this picture signal comprises one or more differential wave, each in the middle of described differential wave comprises multiple data segments, and at least one in the middle of described differential wave also comprises one or more Equations of The Second Kind replacement instruction section respectively, in the middle of each lays respectively at described data segments before one of them, for triggering a corresponding person in the middle of this one or more first kind serial connection source electrode driver to receive affiliated picture data.

19. as claimed in claim 17 for the driving method of display device, and it is characterized in that, described source electrode driver also comprises a preposition source electrode driver, and this driving method also comprises: utilize a system sequence to produce signal, start this preposition source electrode driver; And utilize this picture signal to receive picture data affiliated in this picture signal to trigger this preposition source electrode driver.

20. as claimed in claim 17 for the driving method of display device, it is characterized in that, described source electrode driver also comprises one or more Equations of The Second Kind serial connection source electrode driver, and this driving method also comprises: utilize a system sequence to produce signal, start this one or more Equations of The Second Kind source electrode driver simultaneously; And utilize this picture signal to carry out the reception sequential of synchronous this Equations of The Second Kind serial connection source electrode driver.