CN102568404A - Time schedule controller, source electrode and panel driving device, display device and driving method - Google Patents
Time schedule controller, source electrode and panel driving device, display device and driving method Download PDFInfo
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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
Technical field
The present invention relates to a kind of driving method, drive unit and serial connection source electrode driver of display panels; Be particularly related to a kind of through reducing the stand-by time of receiver in the drive unit, the driving method of the display panels of reduction power consumption, drive unit and serial connection source electrode driver.
Background technology
High resolving powerization and many GTGizations along with liquid crystal indicator; Volume of transmitted data in the board driving mchanism between time schedule controller and source electrode driver sharply increases; Cause number of, lines, power consumption and electromagnetic interference (EMI) (electromagnetic interference, EMI) problem such as explode.For this reason; Industry proposes differential little amplitude interface; Also be the differential signaling of amount of decrease (Reduced Swing Differential Signaling; RSDS) or mini low voltage differential signaling (mini Low-Voltage Differential Signaling, mini-LVDS) interface is to solve problems such as above-mentioned number of, lines, power consumption.
Fig. 1 is the synoptic diagram of the mini low voltage differential signaling interface 100 in the 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 a plurality of (are example with four at this) 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.
Fig. 2 is the sequential chart of coherent signal in the mini low voltage differential signaling interface 100 among Fig. 1, so that aforesaid operations is done further to explain.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 receiver 130_1～130_4 of source electrode driver 120_1～120_4 together.Each group in the middle of differential wave LV1, LV2, the LV3 all comprises a plurality of data segments DATA, utilizes a blank section BLK to separate respectively.In addition; In the middle of the differential wave at least one group; For example be that differential wave LV1 has more the indication section RST that resets, its position is after producing the synchronous blank section BLK of signal SYS with system sequence, after being used for source electrode driver 120_1～120_4 and starting; The reception sequential of synchronous receiver 130_1～130_4, the delay error problem that is caused with the transmission range difference of avoiding picture signal FRM.
Fig. 3 be used for being carried out in the mini low voltage differential signaling interface 100 of key diagram 1 one drive flow process 30.Please be simultaneously with reference to figure 1～3 to understand the running of mini low voltage differential signaling interface 100.At first, after flow process began (step 300), time schedule controller 110 produced signal SYS according to system sequence, produced picture signal FRM (step 302).Next, source electrode driver 120_1～120_4 all starts to a holding state (step 304) behind the positive edge of a pulse of receiver 130_1～130_4 receiving system timing sequence generating signal SYS.After a while, receiver 130_1～130_4 can receive the indication section RST that resets, and therefore it receives sequential (step 306) synchronously through starting internal reception clock pulse separately.
Next, because pulse signal SP0 is fixed as noble potential, so receiver 130_1 can just begin to receive data segments DATA (step 308) after receiving the indication section RST that resets.Therefore yet other source electrode driver is maintained electronegative potential because of pulse signal SP1, SP2 and SP3 separately, keeps holding state and does not receive any data.
After receiver 130_1 accomplishes Data Receiving; Transmitter 150_1 will see pulse signal SP1 (step 310) off; Receiver 130_2 to trigger next stage source electrode driver 120_2 begins to receive data (step 312); And after accomplishing Data Receiving, transmitter 150_2 will see pulse signal SP2 (step 332) off.Similarly, after receiver 130_2 received the data completion, transmitter 150_2 produced pulse signal SP2 and begins Data Receiving (step 313) to trigger next stage receiver 130_3, and transmitter 150_3 can produce pulse signal SP3 (step 333) after finishing receiving.Similarly, after receiver 130_3 received the data completion, transmitter 150_3 can produce pulse signal SP3 and begin Data Receiving (step 314) to trigger next stage receiver 130_4, accomplishes up to Data Receiving.
Next; When next positive edge of system sequence generation signal SYS took place, converter 140_1～140_4 of source electrode driver 120_1～120_4 can convert received separately data segments DATA into source drive signal VS_1～VS_4 (step 340) respectively simultaneously.At last; When the negative edge of system sequence generation signal SYS takes place; Transmitter 550_1～550_4 of source electrode driver 120_1～120_4 can send the pixel cell (step 350) of source drive signal VS_1～VS_4 to the display panels, so flow process finishes (step 360).
Comprehensively above-mentioned; In the process of the counterpart of the data segments among the reception picture signal FRM; In order to reach the purpose of receiver 130_1～130_4 picture data under different time receives one by one; Arrange source electrode driver 120_1～120_4 respectively after the triggering via pulse signal SP0～SP3; Just begin to carry out Data Receiving, and be fixed as the noble potential except pulse signal SP0 perseverance, pulse signal SP1～SP3 just produces respectively after receiver 130_1～130_3 accomplishes the counterpart that receives its data.
Yet; In above-mentioned flow process; Even if all promptly being produced signal SYS by system sequence as far back as time point t1, receiver 130_2～130_4 starts; But must wait until still that respectively the triggering that just can receive pulse signal SP1, SP2, SP3 begins to grasp data after time point t2, t3, the last source electrode driver of t4 are accomplished Data Receiving.In other words, have standby period P 2, P3, P4, during receiver 130_2～130_4 consumed power and do not have and carry out any function only, the result wastes many electric energy.Therefore, existing driving flow process 30 has improved necessity in fact.
Summary of the invention
Technical matters to be solved by this invention provides a source 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; One source driving device is provided, comprises a plurality of source electrode drivers of serial connection 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 through configuration, be connected in series the source electrode driver time inequality with other first kind, foundation a pulse signal that previous source electrode driver sent out starts respectively; And the triggering that after startup, receives a picture signal is with the picture data under receiving in this picture signal respectively, and wherein said source electrode driver produces a pulse signal to start the next stage source electrode driver behind the picture data of receiving under it.
According to a further aspect in the invention, a kind of board driving mchanism is provided, comprises above-mentioned source electrode driving device; And time schedule controller, it is coupled to this source electrode driving device, and through being configured to produce this picture signal to be sent to the said source electrode driver in the middle of this source electrode driving device, produces a plurality of source electrode drive signals.
According to a further aspect in the invention, a kind of display device is provided, comprises above-mentioned board driving mchanism; And a panel, in order to the driving that receives this panel display drive apparatus with display frame.
According to a further aspect in the invention, a kind of time schedule controller is provided, comprises a system sequence signal generator branch, it produces signal through being configured to produce a system sequence; And one picture signal produce part; It produces the picture signal of signal Synchronization through being configured to produce one with this system sequence; This picture signal comprises the affiliated respectively picture data of multiple source driver; And in order to triggering one or more serial connection source electrode driver in the middle of the said source electrode driver in proper order, so that this one or more picture data of serial connection source electrode driver under different time receives respectively.
According to a further aspect in the invention; A kind of driving method that is used for display device is provided; This display device comprises a plurality of source electrode drivers of serial connection mutually; Said source electrode driver comprises one or more first kind serial connection source electrode driver, and this driving method comprises and utilizes a picture signal to trigger in proper order this one or more first kind serial connection source electrode driver, with the picture data receive in this picture signal respectively at different time under; And behind the picture data under said source electrode driver each except that the last is being received it, utilize this source electrode driver to produce a pulse signal to start next source electrode driver.
The entry condition and the trigger condition of source electrode driving device adjustment serial connection source electrode driver of the present invention; And in picture signal, add second type of indication section of resetting being used to trigger usefulness accordingly; Make source electrode driver start in proper order but not startup simultaneously; And the triggering that after starting, can receive the previous stage source electrode driver immediately is to receive data, to reach the purpose that reduces power consumption.
Description of drawings
Fig. 1 is the synoptic diagram of prior art one mini low voltage differential signaling interface.
Fig. 2 is the sequential chart of coherent signal of the mini low voltage differential signaling interface of Fig. 1.
Fig. 3 be Fig. 1 mini low voltage differential signaling interface one drive flow process synoptic diagram.
Fig. 4 is the synoptic diagram according to an embodiment one panel drive unit.
Fig. 5 is the synoptic diagram according to one source pole drive unit in the board driving mchanism of Fig. 4 of an embodiment.
Fig. 6 A is the sequential chart according to the coherent signal of the board driving mchanism of Fig. 5 of an embodiment.
Fig. 6 B is according to the picture signal of Fig. 6 A of an embodiment and the graph of a relation of clock pulse signal.
Fig. 6 C is the synoptic diagram that drives flow process according to one of the source electrode driving device of Fig. 5 of an embodiment.
Fig. 7 is the sequential chart according to the coherent signal of the board driving mchanism of Fig. 5 of an alternate embodiment.
Fig. 8 is the sequential chart that drives flow process according to one of the board driving mchanism of Fig. 5 of an embodiment.
Fig. 9 is the synoptic diagram according to the source electrode driving device of Fig. 5 of an alternate embodiment.
Figure 10 is the synoptic diagram according to a control flow of the source electrode driving device of Fig. 9 of an embodiment.
Wherein, description of reference numerals is following:
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 generator branches
424 picture signals produce part
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
The SYS system sequence produces signal
The FRM picture signal
LV1, LV2, LV3, LVM differential wave
The blank section of BLK
The CLK clock pulse signal
SKEW1, SKEW2 time delay
RST resets and indicates section
The RST1 first kind is reset and is indicated section
Second type of indication section of resetting of RST2
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
During P2, P3, the P4 standby
Embodiment
In the source drive technology that this disclosed, the serial connection source electrode driver can start one by one to holding state at different time but not start to holding state simultaneously, and is starting to holding state, receives immediately and triggers to begin to receive picture data.So the serial connection source electrode driver can significantly reduce from starting to the stand-by time that begins to receive data, thereby can solve the problem that the long-term standby of receiver in the source electrode driver of connecting in the prior art causes power consumption.
Below will enumerate several embodiment; Central through changing the entry condition and the trigger condition of serial connection source electrode driver; And extra section in picture signal adding control triggering usefulness, making that a serial connection source electrode driver must be after previous stage source electrode driver Data Receiving be accomplished, the startup that just can receive the previous stage source electrode driver is with the entering holding state; And after startup, can receive the triggering of picture signal immediately, to begin to carry out Data Receiving.
Please in the lump with reference to figure 4 and Fig. 5.Fig. 4 is the synoptic diagram according to the display device 40 of an embodiment, and Fig. 5 then is the synoptic diagram according to the source electrode driving device shown in Figure 4 410 of an embodiment.At first please refer to Fig. 4, display device 40 comprises a panel drive unit 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 one picture signal to produce part 424, be used for respectively producing a system sequence produce signal SYS and one with system sequence generation signal SYS page synchronized signal FRM.System sequence produces the time sequential routine that signal SYS is mainly used in Controlling Source electrode driving device 410, and picture signal FRM mainly then is used to provide picture data, and the extra effect that provides triggering source electrode driving device 410 to receive picture datas.
The transmission that time schedule controller 420 and source electrode driving device are 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, and be not limited to mini low voltage differential signaling interface with other type of series connection framework.
Please go to reference to figure 5, it is the synoptic diagram according to one source pole drive unit in the board driving mchanism of 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 applied for according to system sequence generation signal SYS and picture signal FRM and produces the source drive signal VS1～VSN that is used to drive panel 450.More careful; In each source electrode driver 520_1～520_N; Receiver 530_1～530_N disposes and receives the central respectively affiliated picture data of picture signal FRM; Converting unit 540_1～540_N then converts received picture data into source drive signal VS1～VSN, and transmitter 550_1～150_N then is sent to the pixel cell on the panel 450 with source drive signal VS1～VSN.In addition, after receiver 530_1～530_N-1 was received data, transmitter 550_1～5150_N-1 also can see enabling signal SP1～SPN-1 respectively off to next stage receiver 530_2～530_N.It should be noted that in other embodiments receiver 530_1～530_N-1 can directly produce enabling signal SP1～SPN-1 after receiving data, and must not see off through transmitter 550_1～5150_N-1.
In detail, preposition source electrode driver 520_1 produces signal SYS according to system sequence and starts to holding state, and after the triggering that receives picture signal FRM, begins to receive picture data affiliated among the picture signal FRM.And it is different with startup and the trigger condition of preposition source electrode driver 520_1; First kind serial connection source electrode driver 520_2～520_N then is the pulse signal (SP1～SP_N-1) start to holding state according to previous source electrode driver sent out; And can receive the triggering in proper order of picture signal FRM, to receive picture data affiliated respectively among the picture signal FRM one by one at different time.In addition, except the first kind serial connection source electrode driver 520_N at end, source electrode driver 520_1～520_N-1 produces pulse signal SP1～SP_N-1 respectively and gives next source electrode driver behind the picture data of receiving under it.After source electrode driver 520_1～520_N accomplished Data Receiving, system sequence produced signal SYS and further triggers source electrode driver 520_1～520_N, to convert the picture data that is received into source drive signal VS1～VSN respectively and to export.Panel 450 can upgrade the content of pixel, with display frame according to source drive signal VS1～VSN then.
In other words, the main difference of the prior art of present embodiment and Fig. 1 to Fig. 3 is, entry condition and trigger condition and the source electrode driver 120_2～120_4 of the prior art and inequality of first kind serial connection source electrode driver 520_2～520_N.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 comes to start simultaneously, and starts by accomplishing the pulse signal that is produced after the Data Receiving at the previous stage source electrode driver.In other words, pulse signal is not used further to trigger the usefulness that receives data, and changes the usefulness of startup into.And about trigger condition, the triggering that first kind serial connection source electrode driver 520_2～520_N no longer receives the previous stage source electrode driver begins to receive data, is starting to holding state and change into, triggers to receive data via picture signal FRM immediately.Through the change of this startup and trigger condition, each source electrode driver just starts respectively before can being arranged in and will making data and receive, therefore can avoid holding state to Data Receiving begin during the problem of the unnecessary electric energy of consume.
For cooperating the change of trigger condition; Picture signal FRM can not only provide source electrode driver 520_1～520_N affiliated respectively picture data at this; And also can trigger the source electrode driver 520_1～520_N of serial connection in proper order, so that source electrode driver 520_1～520_N receives affiliated respectively picture data immediately after different time starts.Be prone to speech, the form of the picture signal FRM that time schedule controller 420 is produced is compared to the prior art of Fig. 2 difference to some extent, and possess in proper order because of it is extra formula triggers the effect that the first kind is connected in series source electrode driver 520_2～520_N.
Please refer to Fig. 6 A, Fig. 6 A is the sequential chart that produces 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 A, system sequence produces signal SYS and comprises a plurality of pulse waves, 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 representes to be connected in series the affiliated respectively picture data of source electrode driver 520_2～520_N respectively.And in the middle of differential wave LV1～LVM at least one group; Arrange to have second type of indication section RST2 that resets before data segments DATA2～DATAN respectively, be used for the picture data DATA2～DATAN of first kind serial connection source electrode driver 520_2～520_N under receiving.In addition, at least one group in the middle of differential wave LV1～LVM, arrange to have the first kind indication section RST1 that resets before the data segments DATA1 respectively, be used to trigger the picture data DATA1 of preposition source electrode driver 520_1 under receiving.
Compared to the sequential chart of the prior art of Fig. 1, extraly between per two the blank section BLK of the picture signal FRM of Fig. 6 A a plurality of second type of indication section RST2 that reset have been increased.These the second type indication section RST2 that resets cuts into a plurality of data segments DATA2～DATAN with data segments DATA continuous among Fig. 1, so that trigger the picture data DATA2～DATAN of first kind serial connection source electrode driver 520_2～520_N under different time receives one by one in proper order.Preferably; Can arrange and then second type of indication section RST2 that resets of each pulse signal SP1～SP_N-1; Therefore each serial connection source electrode driver 520_2～520_N begun to receive time of data DATA2～DATAN suffered start-up time with triggering can be quite approaching, so the electric energy that stand-by time is consumed significantly reduces compared to prior art.
It should be noted that the sequential chart shown in Fig. 6 A is merely a preferred examples, and all different versions can be arranged, as long as formula triggers first kind serial connection source electrode driver 520_2～520_N in proper order.In addition, the content of second type of indication section RST2 that resets can be reset with the first kind, and RST1 is identical for the indication section, with simplified design.Also can be according to different application, the different first kind of design content is reset and is indicated section RST1 and second type of indication section RST2 that resets.Even second type of indication section RST2 that resets also can have different contents.
In addition, please with reference to Fig. 6 B, the picture signal FRM of its further enlarged and displayed Fig. 6 A and the relation of clock pulse signal CLK, wherein clock pulse signal CLK and picture signal FRM are equally by 510 generations of time schedule controller.Can be noted that; Data segments DATA in the middle of each differential wave of picture signal FRM (only showing differential wave LV1) at this; Can and clock pulse signal CLK between have the time and postpone (time skew); And this time postpones and can adjust according to design requirement, to reach preferred display frame.In addition, the time delay SKEW1 to SKEWN of different source electrode driver 520_1 to 520_N (this figure only illustrates SKEW1 and SKEW2) can be designed to identical or different.
For realizing above-mentioned adjustment, the mode different with prior art capable of using disposes time schedule controller 510.For example; Can be in the time interval of second type of indication section RST2 that resets; The part or all of time interval of second type of indication section RST2 that resets is replaced to blank (BLANK) zone, adjust the time delay between clock pulse signal CLK and data segments DATA.Different source electrode drivers also can have different time to postpone each other.It should be noted that; No matter be conventional source driver (promptly existing source electrode driver or following second type of serial connection source electrode driver will stating) or first kind serial connection source electrode driver; All can be by time schedule controller through being configured to provide different time delay between different source electrode drivers, to reach preferred display frame.
Fig. 6 C is used to explain that source electrode driving device shown in Figure 5 410 carried out one drives flow process 60 when the time sequential routine of collocation Fig. 6 A, to further specify the principle of operation of Fig. 4 and device shown in Figure 5.Please be simultaneously with reference to figure 4 to Fig. 6 A and 6C to understand the running of source electrode driving device 410.At first, after flow process began (step 600), picture signal produced part 424 and divides 422 system sequences that produce to produce signal SYS according to the system sequence signal generator, produces picture signal FRM (step 601).
Next, the receiver 530_1 of preposition source electrode driver 520_1 starts to a holding state (step 602) behind the positive edge of a pulse of receiving system timing sequence generating signal SYS.After a while; The receiver 530_1 of preposition source electrode driver 520_1 is receiving reset indication section RST1 and after starting an internal reception clock pulse of the first kind; Because pulse signal SP0 is fixed as noble potential, so receiver 130_1 begins to receive data segments DATA1 (step 608).Yet other first kind serial connection source electrode driver 520_2～520_N does not still start as yet.
Next; After the receiver 530_1 of preposition source electrode driver 520_1 accomplishes Data Receiving; Will see the pulse signal SP1 (step 630_1) of noble potential off, therefore start receiver 530_2 to a holding state (step 610_2) of next stage source electrode driver 520_2.After receiver 530_2 gets into holding state,, after accomplishing Data Receiving, see the pulse signal SP2 (step 630_2) of noble potential again off with beginning to receive data segments DATA2 (step 620_2) after the triggering that can receive second type of indication section RST2 that resets.
Similarly; After afterwards the receiver 530_3 to 530_N of what first kind serial connection source class driver 520_3 to 520_N accomplishes Data Receiving by the previous stage source electrode driver in regular turn; Just receive the startup (step 610_3 to 610_N) of pulse signal SP2_SPN-1 one by one; And after starting, after can receiving second type of triggering of indicating section RST2 of resetting, begin to receive data segments DATA3 to DATAN (step 620_3 to 620_N); And except that the most last first kind serial connection source class driver 520_N, each serial connection source class driver 520_3 to 520_N-1 can see the pulse signal SP3 to SPN-1 (step 630_3 to 630_N-1) of noble potential off after accomplishing Data Receiving.
Next; When next positive edge of system sequence generation signal SYS took place, converter 540_1～540_N of source electrode driver 520_1～520_N can convert received separately data segments DATA1 to DATAN into source drive signal VS1～VSN (step 640) respectively simultaneously.At last; When the negative edge of system sequence generation signal SYS takes place; Transmitter 550_1～550_N of source electrode driver 520_1～520_N can send the pixel cell (step 650) of source drive signal VS1～VSN to the display panels, so flow process finishes (step 660).
Comprehensively above-mentioned; In the middle of first kind serial connection source electrode driver 520_2～520_N each must be after the previous stage source electrode driver be accomplished Data Receiving; Just can get into holding state from pulse signal SP1～SPN that the previous stage source electrode driver receives noble potential; And after startup, can receive the triggering of second type of replacement section RST2 of picture signal SYS immediately, to begin to carry out Data Receiving.Thus, first kind serial connection source electrode driver 520_2～520_N significantly reduces from starting to the stand-by time that begins to receive data.
It is noted that the first kind of part serial connection source electrode driver 520_2～520_N can be replaced by second type of serial connection source electrode driver among Fig. 5,, and then reduce by second type of number of indication section RST2 of resetting so that source electrode driver is divided into groups.The first kind is connected in series source electrode driver with second type can be arranged to any required number each other, and comes to be connected in series mutually with any mode of assigning.In the middle of second type of source electrode driver each is similar with the operation of preposition source electrode driver 520_1, can according to following step and operate:
Pulse wave according to system sequence generation signal SYS gets into holding state;
According to first kind replacement indication section RST1, receive sequential synchronously;
Touching of a pulse signal (one of SP1～SP_N-1) that previous source electrode driver sent out
After sending out, begin to receive picture data affiliated respectively in the data segments (one of DATA2～DATAN);
And after Data Receiving is accomplished, produce a pulse signal to next stage source electrode driver.
For instance, suppose N=4, and the first kind is connected in series source electrode driver 520_2,520_4 is replaced by second type of serial connection source electrode driver, the signal timing diagram as shown in Figure 7 of then can arranging in pairs or groups is operated.In Fig. 7; First group of source electrode driver comprises that preposition source electrode driver 520_1 is connected in series source 520_2 with two second type, 520_4 produces the pulse wave of signal SYS and startup simultaneously according to system sequence; And according to the next synchronous sequential of first kind replacement indication section RST1; Then in proper order the triggering of received pulse signal SP0 (show, be set potential), SP1 and SP3 to receive data segments DATA1, DATA2 and DATA4 one by one at different time.Comparatively speaking; After second type of serial connection source electrode driver 520_3 waits until that then a serial connection source electrode driver 520_2 receives data DATA2 completion; Receive the pulse signal SP2 that serial connection source electrode driver 520_2 produced and starts, and receive second type immediately and reset and indicate the triggering of section RST2 to begin to receive data segments DATA3.Thus, source electrode driver 520_3 does not start before accomplishing data at source electrode driver 520_1,520_2, and the 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 picture signal FRM design compromise of Fig. 2 and Fig. 6 A, and it can also avoid the number of second type of indication section RST2 that resets to roll up to the degree of packed data section DATA1～DATA4 when reducing receiver power consumption.Therefore, replace with second type of serial connection source electrode driver through the first kind being connected in series source electrode driver, board driving mchanism 400 can be adjusted it and drive flow process, power consumption, picture signal FRM, to meet the different needs according to different application.In addition, preposition source electrode driver 520_1, first kind serial connection source electrode driver and second type of hardware realization that is connected in series source electrode driver 520_2～520_N can be identical are so can also possess the easy advantage of design.
It should be noted that; Sequential chart shown in Figure 7 is merely a preferred examples; And all different versions can be arranged, as long as formula triggers first kind serial connection source electrode driver and starts preposition source electrode driver simultaneously and is connected in series source electrode driver with second type in proper order.In addition, the first kind also can have all different contents according to design with the content of second type of reset indication section RST1 and RST2, each other also can be identical or different.
The operation of the board driving mchanism 400 of Fig. 4 to Fig. 7 can reduce one and drive flow process 80, and is as shown in Figure 8.Drive flow process 80 and comprise the following step:
Step 800: beginning.
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 starts; And after the first kind is reset and is indicated the triggering of section RST1 in receiving picture signal FRM; Picture data under beginning to receive among the picture signal FRM, and after receiving data, produce a pulse signal.
Step 806: first kind serial connection source electrode driver 520_2～520_N starts according to the pulse signal that previous source electrode driver sent out; And after the triggering in proper order of section RST2 is indicated in second type of replacement in the reception picture signal; Picture data under different time receives among the picture signal FRM respectively one by one, and each leisure all produces a pulse signal after receiving data.
Step 808: the triggering that source electrode driver 520_1～520_N produces signal SYS according to system sequence converts the picture data that is received into other source drive signal VS1～VSN respectively and also exports.
Step 810: finish.
The specification specified that drives flow process 80 can not given unnecessary details at this with reference to aforementioned.
It should be noted that; Because the preposition source electrode driver 520_1 and the first kind or second type of serial connection source electrode driver 520_2～520_N can use identical hardware to realize; Therefore a plurality of universal source drivers can only be set; And the change through operator scheme flexibly realizes the function of first kind serial connection source electrode driver, or realizes the preposition source electrode driver function of (being equal to second type of serial connection source electrode driver), and then reaches the purpose of simplifying hardware designs; And also therefrom the power consumption of Adjustment System, drive flow process, to satisfy different application requirements.
As shown in Figure 9, it is the synoptic diagram according to the source electrode driving device 410 of another embodiment.In Fig. 9, be provided with a plurality of universal source driver 920_1～920_N, it changes operator scheme according to mode signal MODE_1～MODE_N.With shown in Figure 5 similar, universal source driver 920_1～920_N can comprise respectively that equally receiver, converter and transmitter are to carry out similar data reception, conversion and sending function respectively.
If mode signal MODE_x is set to " 0 ", then universal source driver 920_x operates in " the second generic operation pattern ", and expression corresponding general source electrode driver 920_x is used to realize preposition source electrode driver (being equal to second type of 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 ", and expression universal source driver 920_x is used to realize first kind serial connection source electrode driver.For example, if MODE_1 is set at " 0 ", mode signal MODE_2～MODE_N all is set at " 1 ", the operation of the source electrode driving device of Fig. 9 is with same as shown in Figure 5.
In detail, the operation of the source electrode driving device 410 of Fig. 9 can reduce a control flow 1000, and is shown in figure 10.Control flow 1000 is described 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: beginning.
Step 1002: time schedule controller 420 produces picture signal FRM according to system sequence signal SYS, and it for example comprises the first kind replacement indication section RST1 shown in Fig. 6 A, second type of reset indication section RST2, blank section BLK and data segments DATA.
Step 1004: mode signal MODE_x=" 1 "? If get into step 1006 to operate in " first kind operator scheme "; Otherwise then jump procedure 1010 is to operate in " the second generic operation pattern ".
Step 1006: the receiver of source electrode driver 920_x starts to holding state after receiving pulse signal SPx-1.
Step 1008: the receiver of source electrode driver 920_x begins to receive data segments DATA_x after the triggering that receives second type of indication section RST2 that resets, and jump procedure 1016.
Step 1010: the receiver of source electrode driver 920_x starts to holding state according to the system sequence signal, and indicates section RST1 according to the first kind replacement of picture signal FRM, comes synchronous one to receive sequential.
Step 1012: pulse signal SPx-1=" 1 "? If (" being ") gets into step 1014; (otherwise " denying "), then repeated execution of steps 1012, till pulse signal SPx-1=" 1 ".
Step 1014: the receiver of source electrode driver 920_x is according to the triggering of pulse signal SPx-1, and begins to receive data segments DATA_x, and gets into step 1016.
Step 1016: after the receiver of source electrode driver 920_x is received data segments DATA_x, transmitter see off pulse signal SPx (also be pulse signal SPx value by " 0 " change into " 1 ").
Step 1018: finish.
In sum, in the prior art, receiver comes to start simultaneously according to the system sequence signal, but starts to its actual stand-by time consume electric power and non-functional output does not meet economic benefit significantly only that begins to receive before the data.In comparison; The entry condition and the trigger condition of the foregoing description adjustment serial connection source electrode driver; And in picture signal, add second type of indication section of resetting being used to trigger usefulness accordingly; Make source electrode driver start in proper order but not startup simultaneously, and the triggering that after starting, can receive the previous stage source electrode driver immediately is with the reception data, to reach the purpose that reduces power consumption.In addition; Can be second type of source electrode driver further through replacing part first kind source electrode driver; Or further can switch the operator scheme of universal source driver through mode signal, with the power consumption of adjustment board driving mchanism, drive flow process, to satisfy different application requirements.
The foregoing description is through changing the triggering and the entry condition of serial connection source electrode driver; And cooperate the change of above-mentioned condition and add extra triggering at picture signal and use section; Make the same time only have a source electrode driver to be activated and consumed power, and then reach the purpose that reduces power consumption.
The above is merely the preferred embodiments of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (20)
1. a source driving device comprises:
A plurality of source electrode drivers of serial connection 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 through configuration, be connected in series the source electrode driver time inequality with other first kind, foundation a pulse signal that previous source electrode driver sent out starts respectively; And the triggering that after startup, receives a picture signal is distinguished affiliated picture data to receive in this picture signal
Wherein said source electrode driver each except that the last produces a pulse signal to start the next stage source electrode driver behind the picture data of receiving under it.
2. source electrode driving device as claimed in claim 1; It is characterized in that; Said source electrode driver also comprises a preposition source electrode driver; This preposition source electrode driver is coupled to said serial connection source electrode driver, starts through being configured to produce signal according to a system sequence, and after startup according to the triggering of this picture signal to begin to receive picture data affiliated in this picture signal.
3. source electrode driving device as claimed in claim 1; It is characterized in that; Said serial connection source electrode driver also comprises one or more second type serial connection source electrode driver; Start simultaneously through being configured to produce signal, and start the back at the same time according to the next sequential that receives synchronously of this picture signal according to a system sequence.
4. source electrode driving device as claimed in claim 3 is characterized in that, at least one in the middle of the said serial connection source electrode driver also receives a mode signal and switch to this first kind serial connection source electrode driver or this second type serial connection source electrode driver.
5. board driving mchanism comprises:
The described source electrode driving device of claim 1; And
Time schedule controller, it is coupled to this source electrode driving device, and through being configured to produce this picture signal to be sent to the said source electrode driver in the middle of this source electrode driving device, produces a plurality of source electrode drive signals.
6. board driving mchanism as claimed in claim 5 is characterized in that this picture signal comprises one or more differential wave, and each in the middle of the said differential wave comprises a plurality of data segments; And central at least one of said differential wave also comprises one or more the second type indication section of resetting respectively; In the middle of each lays respectively at said data segments before one of them, be used to trigger a corresponding person in the middle of this one or more first kind serial connection source electrode driver data segments under receiving.
7. board driving mchanism as claimed in claim 5; It is characterized in that; Said source electrode driver also comprises a preposition source electrode driver, and this preposition source electrode driver couples with said serial connection source electrode driver mutually, and wherein this time schedule controller also produces a system sequence and produces signal; Be used for starting this preposition source electrode driver; And wherein this picture signal comprises one or more differential wave, and at least one in the middle of the said differential wave also comprises first kind replacement indication section, is used to trigger this preposition source electrode driver and receives affiliated picture data.
8. board driving mchanism as claimed in claim 5; It is characterized in that; Said serial connection source electrode driver also comprises one or more second type 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; Be used to start this one or more second type the serial connection source electrode driver; And in the middle of the wherein said differential wave at least one comprise the first kind indication section of resetting, and is used to trigger the picture data of this preposition source electrode driver under receiving.
9. board driving mchanism as claimed in claim 8 is characterized in that, at least one in the middle of the said serial connection source electrode driver also receives a mode signal and switch to this first kind serial connection source electrode driver or this second type 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 time clock signal, has other time migration between the picture data under at least one in the middle of the source electrode driver described in this clock pulse signal and this picture signal.
11. a display device comprises:
The described board driving mchanism of claim 5; And
One panel, in order to the driving that receives this panel display drive apparatus with display frame.
12. a display device comprises:
A plurality of serial connection source electrode drivers, it starts to holding state at different time through being configured to one by one, and central each triggers to begin to receive picture data starting to receive respectively to the holding state; And
Time schedule controller, it is through being configured to that this picture data is provided, and any in the middle of said serial connection source electrode driver starts to holding state respectively, triggers to receive this picture data by serial connection source electrode driver.
13. a time schedule controller comprises:
One system sequence signal generator branch, it produces signal through being configured to produce a system sequence; And one picture signal produce part; It produces the picture signal of signal Synchronization through being configured to produce one with this system sequence; This picture signal comprises the affiliated respectively picture data of multiple source driver; And in order to triggering one or more serial connection source electrode driver in the middle of the said source electrode driver in proper order, so that this one or more picture data of serial connection source electrode driver under different time receives respectively.
14. time schedule controller as claimed in claim 13; It is characterized in that; This picture signal comprises one or more differential wave, and each in the middle of the said differential wave comprises a plurality of data segments, and central at least one of said differential wave also comprises one or more the second type indication section of resetting respectively; In the middle of each lays respectively at said data segments before one of them, be used to trigger a corresponding person in the middle of this one or more serial connection source electrode driver with the data segments under receiving.
15. time schedule controller as claimed in claim 13; It is characterized in that; This timing control signal is used to start the central preposition source electrode driver of said source electrode driver; And wherein this picture signal comprises one or more differential wave, and at least one in the middle of the said differential wave comprises first kind replacement indication section, receives affiliated data segments in order to trigger this preposition source electrode driver.
16. time schedule controller as claimed in claim 13; It is characterized in that; This time schedule controller also produces a time clock signal, has other time migration between the picture data under at least one in the middle of the source electrode driver described in this clock pulse signal and this picture signal.
17. driving method that is used for display device; This display device comprises a plurality of source electrode drivers of serial connection mutually; Said source electrode driver comprises one or more first kind serial connection source electrode driver; This driving method comprises: utilize a picture signal to come to trigger in proper order this one or more first kind serial connection source electrode driver, with the picture data receive in this picture signal respectively at different time under; And behind the picture data under said source electrode driver each except that the last is being received it, utilize this source electrode driver to produce a pulse signal to start next source electrode driver.
18. the driving method that is used for display device as claimed in claim 17; It is characterized in that; This picture signal comprises one or more differential wave; In the middle of the said differential wave each comprises a plurality of data segments; And in the middle of the said differential wave at least one also comprise one or more the second type indication section of resetting respectively, central each lay respectively at said data segments before one of them, be used to trigger a corresponding person in the middle of this one or more first kind serial connection source electrode driver with the picture data under receiving.
19. the driving method that is used for display device as claimed in claim 17 is characterized in that, said 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 trigger affiliated picture data in this preposition this picture signal of source electrode driver reception.
20. the driving method that is used for display device as claimed in claim 17; It is characterized in that; Said source electrode driver also comprises one or more second type serial connection source electrode driver; And this driving method also comprises: utilize a system sequence to produce signal, start this one or more second type of source electrode driver simultaneously; And utilize this picture signal to come the reception sequential of this second type serial connection source electrode driver synchronously.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107799045A (en) * | 2016-09-05 | 2018-03-13 | 奇景光电股份有限公司 | Display panel drive device, display and its operating method |
| CN109036328A (en) * | 2017-06-09 | 2018-12-18 | 京东方科技集团股份有限公司 | Register value transmission method and component, display device |
| CN110223643A (en) * | 2018-03-01 | 2019-09-10 | 京东方科技集团股份有限公司 | Data transmission method, component and system, display device |
| TWI687914B (en) * | 2018-09-26 | 2020-03-11 | 大陸商北京集創北方科技股份有限公司 | Pulse signal control module, synchronous pulse signal generation method, source driver and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050012705A1 (en) * | 2003-01-29 | 2005-01-20 | Nec Electronics Corporation | Display device including a plurality of cascade-connected driver ICs |
| CN1655018A (en) * | 2004-02-09 | 2005-08-17 | 联咏科技股份有限公司 | Flat panel display and source drive thereof |
| CN1917026A (en) * | 2006-08-15 | 2007-02-21 | 友达光电股份有限公司 | Device for driving liquid crystal display |
| CN101572047A (en) * | 2008-05-04 | 2009-11-04 | 联咏科技股份有限公司 | Data synchronization method for display and correlative device |
-
2010
- 2010-12-30 CN CN201010616040.0A patent/CN102568404B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050012705A1 (en) * | 2003-01-29 | 2005-01-20 | Nec Electronics Corporation | Display device including a plurality of cascade-connected driver ICs |
| CN1655018A (en) * | 2004-02-09 | 2005-08-17 | 联咏科技股份有限公司 | Flat panel display and source drive thereof |
| CN1917026A (en) * | 2006-08-15 | 2007-02-21 | 友达光电股份有限公司 | Device for driving liquid crystal display |
| CN101572047A (en) * | 2008-05-04 | 2009-11-04 | 联咏科技股份有限公司 | Data synchronization method for display and correlative device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107799045A (en) * | 2016-09-05 | 2018-03-13 | 奇景光电股份有限公司 | Display panel drive device, display and its operating method |
| CN107799045B (en) * | 2016-09-05 | 2021-07-20 | 奇景光电股份有限公司 | Display panel driving device, display and operation method thereof |
| CN109036328A (en) * | 2017-06-09 | 2018-12-18 | 京东方科技集团股份有限公司 | Register value transmission method and component, display device |
| CN109036328B (en) * | 2017-06-09 | 2021-09-03 | 京东方科技集团股份有限公司 | Register value transmission method and assembly and display device |
| US11302281B2 (en) | 2017-06-09 | 2022-04-12 | Beijing Boe Display Technology Co., Ltd. | Register value transmission method and transmitter, display device and computer readable storage medium |
| CN110223643A (en) * | 2018-03-01 | 2019-09-10 | 京东方科技集团股份有限公司 | Data transmission method, component and system, display device |
| CN110223643B (en) * | 2018-03-01 | 2022-02-11 | 京东方科技集团股份有限公司 | Data transmission method, assembly and system and display device |
| TWI687914B (en) * | 2018-09-26 | 2020-03-11 | 大陸商北京集創北方科技股份有限公司 | Pulse signal control module, synchronous pulse signal generation method, source driver and display device |
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|---|---|
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