CN102890919A - Source driver array and drive method of source driver array as well as liquid crystal drive device - Google Patents

Source driver array and drive method of source driver array as well as liquid crystal drive device Download PDF

Info

Publication number
CN102890919A
CN102890919A CN2011102034827A CN201110203482A CN102890919A CN 102890919 A CN102890919 A CN 102890919A CN 2011102034827 A CN2011102034827 A CN 2011102034827A CN 201110203482 A CN201110203482 A CN 201110203482A CN 102890919 A CN102890919 A CN 102890919A
Authority
CN
China
Prior art keywords
source electrode
electrode driver
signal
picture signal
serial connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011102034827A
Other languages
Chinese (zh)
Inventor
徐锦鸿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novatek Microelectronics Corp
Original Assignee
Novatek Microelectronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Novatek Microelectronics Corp filed Critical Novatek Microelectronics Corp
Priority to CN2011102034827A priority Critical patent/CN102890919A/en
Publication of CN102890919A publication Critical patent/CN102890919A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The invention discloses a drive method of a source driver array. The source driver array comprises a front conductive source driver and at least one cascading source driver. The drive method comprises the following steps: reset sections of latched data signals and data signals are used to control the front conductive source driver and the at least one cascading source driver to respectively enter a standby state; the front conductive source driver is trigged to start to receive the corresponding data in picture signals; a polarity control signal is utilized so as to sequentially trigger the at least one cascading source driver to start to receive the corresponding data in picture signals at different time; and the polarity control signal is also utilized to control the polarities of a plurality of source drive signals generated by the front conductive source driver and the at least one cascading source driver.

Description

Source electrode driver array and its driving method and LCD drive g device
Technical field
The present invention relates to a kind of source electrode driver array and its driving method, time schedule controller and sequential control method and LCD drive g device, relate in particular to a kind of driving method that utilizes existing polarity control signal to come drive source driver array, reach correlated source driver array, time schedule controller, sequential control method and LCD drive g device.
Background technology
Along with the high resolving powerization and many GTGizations of liquid crystal indicator, the rapid increase of the volume of transmitted data in the board driving mchanism between time schedule controller and source electrode driver causes the problems such as number of, lines, power consumption and electromagnetic interference (EMI) explode.For this reason, industry proposes differential little amplitude interface, that is amount of decrease differential wave (Reduced Swing Differential Signaling, RSDS) or mini Low Voltage Differential Signal (mini Low-Voltage Differential Signaling, mini-LVDS) interface is to solve the problems such as above-mentioned number of, lines, high-frequency transmission.
Please refer to Fig. 1, Fig. 1 is the schematic diagram that tradition is used a LCD drive g device 10 of mini Low Voltage Differential Signal interface.LCD drive g device 10 includes time schedule controller 102 and one source pole driver array 104.Source electrode driver array 104 includes a leading source electrode driver SD_L and serial connection source electrode driver SD_1 and SD_2, and as shown in Figure 1, leading source electrode driver SD_L and serial connection source electrode driver SD_1 are connected in series (cascade) mode to be connected.Wherein leading source electrode driver SD_L and serial connection source electrode driver SD_1 and SD_2 respectively include an initial signal input part STH_in and an initial signal output part STH_out.Because time schedule controller 102 is to adopt multiple-limb (multi-drop) framework to be connected with each source electrode driver, so time schedule controller 102 can be passed to connected each source electrode driver simultaneously with identical clock signal and picture signal F.Leading source electrode driver SD_L can receive an initial signal STH by its start signal input end STH_in, and as shown in Figure 1, the start signal STH that is received by the start signal input end STH_in of leading source electrode driver SD_L is fixed as high levels.Current stem driver SD_L receives corresponding picture data in picture signal F after, can by its start signal output terminal STH_out output start signal STH to the start signal input end STH_in that is connected in series source electrode driver SD_1, in picture signal F, begin to receive corresponding picture data to trigger serial connection source electrode driver SD_1.In like manner, serial connection source electrode driver SD_1 also can be after receiving picture data, STH is to the start signal input end STH_in that is connected in series source electrode driver SD_2 for the output start signal, begins to receive corresponding picture data to trigger serial connection source electrode driver SD_2 in picture signal F.That is to say, after each serial connection source electrode driver receives corresponding picture data among the picture signal F, will one initial signal STH be sent to next stage by its start signal output terminal STH_out, begin to receive picture data to trigger next stage serial connection source electrode driver.In brief, leading source electrode driver SD_L and serial connection source electrode driver SD_1 can transmit start signal STH to be connected in series mode with SD_2, to trigger sequentially the picture data among each source electrode driver reception picture signal F.
Please refer to Fig. 2, Fig. 2 is the sequential chart of the coherent signal of the LCD drive g device 10 among Fig. 1.The corresponding signal of signal waveform from top to bottom is: differential wave LV1, LV2, LV3, latch data signal LD, polarity control signal POL, start signal STH and panel output signal Xout.It should be noted that picture signal F includes at least one group of (explaining with three groups at this) differential wave LV1, LV2 and LV3, it is provided to leading source electrode driver SD_L and serial connection source electrode driver SD_1 and SD_2 together.Each all comprises a plurality of data segments in the middle of differential wave LV1, LV2, the LV3, for example, and data segments DATA1~DATA3.In addition, at least one in the middle of the differential wave is that differential wave LV1 comprises a replacement section RST for example, the synchronization program when being used for starting source electrode driver and carrying out data receiver.
When LCD drive g device 10 is wanted the image output picture, at first transmit a latch data signal LD and a picture signal F by time schedule controller 102.After current stem driver SD_L and serial connection source electrode driver SD_1 and SD_2 receive the positive edge of a pulse and replacement section RST of latch data signal LD, can all enter an armed state.Simultaneously, after current stem driver SD_L receives replacement section RST, just can begin receive data section DATA1, at this moment, serial connection source electrode driver SD_1 and SD_2 still are ready and do not receive any data.After current stem driver SD_L receives data segments DATA1, can start signal STH be sent to by its start signal output terminal STH_out the start signal input end STH_n of serial connection source electrode driver SD_1, begin receive data section DATA2 to trigger serial connection source electrode driver SD_1.Similarly, serial connection source electrode driver SD_2 can be after receiving the start signal STH that serial connection source electrode driver SD_1 transmits, beginning receive data section DATA3.Thus, time schedule controller 102 just can divide image data and delivers to leading source electrode driver SD_L and serial connection source electrode driver SD_1 and SD_2.
Yet, because each source electrode driver all needs start signal STH is sent to the source electrode driver of next stage, begin receive data to trigger the next stage source electrode driver.In the case, just need additional designs one cabling that each source electrode driver is connected in series between each source electrode driver, to transmit start signal STH, thus, on circuit design, will increase circuit area and production cost.
Summary of the invention
Therefore, fundamental purpose of the present invention namely is to provide a kind of source electrode driver array and its driving method, time schedule controller and sequential control method and LCD drive g device.
For reaching above-mentioned purpose, the invention provides a kind of driving method for one source pole driver array, this source electrode driver array includes a leading source electrode driver and at least one serial connection source electrode driver, this driving method includes a replacement section that utilizes in the middle of a latch data signal and the picture signal, at least one is connected in series source electrode driver and enters to respectively an armed state with this to control this leading source electrode driver, and triggers this leading driver and begin to receive corresponding data in the middle of this picture signal; And utilize a polarity control signal, sequentially trigger this at least one serial connection source electrode driver in different time and begin to receive corresponding data in the middle of this picture signal, and utilize this polarity control signal, at least one is connected in series the polarity of a plurality of source drive signals that source electrode driver produces with this to control this leading source electrode driver.
For reaching above-mentioned purpose, the present invention also provides a kind of sequential control method, be used for a LCD drive g device, this sequential control method includes generation one picture signal, this picture signal is to comprise one or more differential wave, each this differential wave is to comprise many data sections, and at least one is to comprise at least one replacement section in the middle of this one or more differential wave; And produce a polarity control signal, wherein in each operating cycle, this polar signal has one or more transition edge, lays respectively at before a starting point of the central corresponding person of these a plurality of data segments.
For reaching above-mentioned purpose, the present invention also provides a kind of LCD drive g device, includes time schedule controller, is used for producing a latch data signal, a polarity control signal and a picture signal; And one source pole driver array, this source electrode driver array includes a leading source electrode driver and at least one serial connection source electrode driver; Wherein, this leading source electrode driver enters to an armed state according to the replacement section in this latch data signal and this picture signal and begins to receive corresponding data in the middle of this picture signal, this at least one serial connection source electrode driver enters to respectively this armed state according to this replacement section in this latch data signal and this picture signal, and this at least one be connected in series source electrode driver respectively according to the corresponding data of this polarity control signal in the middle of different time sequentially begins to receive this picture signal.
For reaching above-mentioned purpose, the present invention also provides a kind of time schedule controller, this time schedule controller includes a picture signal generation unit, be used for producing a picture signal, this picture signal is to comprise one or more differential wave, each this differential wave is to comprise many data sections, and the one in the middle of this one or more differential wave comprises an at least replacement section; And one be system sequential control generation unit, is used for producing a polarity control signal, and wherein in each operating cycle, this polar signal has one or more transition edge, lays respectively at before a starting point of a corresponding person in the middle of these a plurality of data segments.
For reaching above-mentioned purpose, the present invention also provides a kind of source electrode driver array, and this source electrode driver array includes a leading source electrode driver; And at least one serial connection source electrode driver; Wherein, this leading source electrode driver according to a latch data signal with a picture signal in a replacement section enter to an armed state and begin to receive corresponding data in the middle of this picture signal, this at least one serial connection source electrode driver enters to respectively this armed state according to this replacement section in this latch data signal and this picture signal, and this at least one be connected in series source electrode driver respectively according to the corresponding data of a polarity control signal in the middle of different time sequentially begins to receive this picture signal.
Description of drawings
Fig. 1 is the schematic diagram that tradition is used a LCD drive g device of mini Low Voltage Differential Signal interface.
Fig. 2 is the sequential chart of the coherent signal of the LCD drive g device among Fig. 1.
Fig. 3 is the schematic diagram of a LCD drive g device of the embodiment of the invention.
Fig. 4 is a schematic diagram that drives flow process of the source electrode driver array of Fig. 3.
Fig. 5 is the sequential chart of the coherent signal of the LCD drive g device among Fig. 3.
Fig. 6 is the alternate embodiment schematic diagram of a LCD drive g device of the embodiment of the invention.
Fig. 7 is the schematic diagram of serial connection relation of each source electrode driver of definition of the embodiment of the invention.
Wherein, description of reference numerals is as follows:
10,30 LCD drive g device
102,302 time schedule controllers
104,304 source electrode driver arrays
40 flow processs
400,402,404,406 steps
DATA1, DATA2, DATA3 data segment
The F picture signal
LD latch data signal
LV1, LV2, LV3 differential wave
The POL polarity control signal
RST replacement section
SD_1, SD_2 are connected in series source electrode driver
The leading source electrode driver of SD_L
The STH start signal
STH_in start signal input end
STH_out start signal output terminal
T0, T1, T2, T3, T4 time point
Xout panel output signal
Embodiment
Please refer to Fig. 3, Fig. 3 is the schematic diagram of a LCD drive g device 30 of the embodiment of the invention.LCD drive g device 30 includes time schedule controller 302 and one source pole drives array 304.Time schedule controller 302 can include system sequence control generation unit and a picture signal generation unit (not being illustrated in Fig. 3).System sequence control generation unit is used for producing a latch data signal LD and a polarity control signal POL, wherein, latch data signal LD is used for the time sequential routine of control source drive array 304, and each source electrode driver that polarity control signal POL is used for control source drive array 304 receives the trigger timing of picture data and the signal polarity of the source drive signal that each source electrode driver produces.The picture signal generation unit is used for producing a picture signal F, and picture signal F is mainly used in providing picture data, and additionally provides trigger source electrode driving device 304 to receive the effect of picture data.Preferably, picture signal F includes at least one replacement section RST and a plurality of data segment.
Source drive array 304 includes a leading source electrode driver SD_L and a plurality of serial connection source electrode driver, for example is serial connection source electrode driver SD_1 and SD_2.Wherein leading source electrode driver SD_L and serial connection source electrode driver SD_1 and SD_2 can respectively according to the picture data that receives, export corresponding source drive signal to a panel (not being illustrated in Fig. 3).Be noted that, to explain with three groups of source electrode drivers that are serially connected with a sequence (predriver SD_L as shown in Figure 3 and serial connection source electrode driver SD_1 and SD_2) at this, but not as limit, the quantity of serial connection source electrode driver can adjust according to system requirements.In addition, the connection relationship of each assembly is not repeated herein as shown in Figure 3 in the LCD drive g device 30.The transmission interface that time schedule controller 302 and source drive array are 304 preferably meets a mini Low Voltage Differential Signal (mini Low-Voltage Differential Signaling, mini-LVDS) interface, to reduce number of, lines, high-frequency transmission and electromagnetic interference (EMI), but not as limit, and applicable to the interface between various time schedule controllers and the source electrode driver array, as long as polarity control signal possesses the dual-use function that is connected in series source electrode driver that control polarity and trigger source driver array arranged.
About the detailed function mode of LCD drive g device 30, please continue with reference to figure 4, Fig. 4 is a schematic diagram that drives flow process 40 of the source electrode driver array 304 of Fig. 3.If be noted that identical in fact result, the driving flow process 40 of source electrode driver array 304 is not limited with the order of process flow diagram shown in Figure 4.Drive flow process 40 and comprise following steps:
Step 400: beginning.
Step 402; Utilize the replacement section in the middle of latch data signal and the picture signal, control leading source electrode driver and be connected in series source electrode driver with each and enter to respectively armed state, and trigger leading driver and begin to receive the central corresponding data of picture signal.
Step 404; Utilize polarity control signal, sequentially trigger in different time and respectively to be connected in series source electrode driver and to begin to receive corresponding data in the middle of the picture signal, and more utilize polarity control signal, control the polarity that leading source electrode driver is connected in series the source drive signal that source electrode driver produces with each.
Step 406; Finish.
According to driving flow process 40, in step 402, utilize the central replacement section RST of time schedule controller 302 generation latch data signal LD and picture signal F, enter to respectively an armed state to control leading source electrode driver SD_L with being connected in series source electrode driver SD_1 and SD_2, and trigger leading driver SD_L and begin to receive corresponding data in the middle of the picture signal F.In other words, after current stem driver SD_L and serial connection source electrode driver SD_1 and SD_2 received the replacement section RST of latch data signal LD that time schedule controller 302 produces and picture signal F, leading source electrode driver SD_L and serial connection source electrode driver SD_1 and SD_2 can be respectively enter to armed state according to the replacement section RST of latch data signal LD and picture signal F.Further, when current stem driver SD_L receives the replacement section RST of latch data signal LD and picture signal F, can enter to armed state and begin immediately to receive the central corresponding data of picture signal.That is to say, the replacement section RST of latch data signal LD and picture signal F can trigger leading source electrode driver SD_L and receive the central corresponding data of picture signal.
In step 402, leading source electrode driver SD_L is triggered and is begun to receive corresponding data in the middle of the picture signal, until receive the corresponding data in the middle of the picture signal.Then, in step 404, utilize time schedule controller 302 polarization control signal POL, and the corresponding data in the middle of different time sequentially triggers serial connection source electrode driver SD_1 and SD_2 reception picture signal.Thus, the polarity control signal POL that serial connection source electrode driver SD_1 and SD_2 will produce according to time schedule controller 302 sequentially begins to receive corresponding data in the middle of the picture signal respectively at different time.That is to say, as shown in Figure 3, leading source electrode driver SD_L also can be received by an initial signal input part STH_in and be fixed as an initial signal STH of high levels, but does not need start signal STH is passed to the rear class driver.Serial connection source electrode driver SD_1 in the source drive array 304 and SD_2 can sequentially trigger with the corresponding data in the middle of receiving picture signal in different time by polarity control signal POL, therefore, having its source driver SD_L and serial connection source electrode driver SD_1 and SD_2 before in the source electrode driver array 304 just can be in the acquisition of different time in the middle of picture signal to corresponding picture data.
On the other hand, polarity control signal POL also is used for controlling leading source electrode driver SD_L and the polarity that is connected in series the source drive signal that source electrode driver SD_1 and SD_2 produce.In for example during each operating cycle of latch data signal LD, can utilize the initial state of polar signal POL to control leading source electrode driver SD_L and be connected in series source electrode driver SD_1 and the signal polarity of the source drive signal that SD_2 produces.Specifically, in LCD drive g device 30, polarity control signal POL is except the function of the signal polarity of possessing the source drive signal that produces of each source electrode driver of control, more shoulder triggering and respectively be connected in series the opportunity that source electrode driver receives corresponding picture data, to realize that each source electrode driver is in the purpose of the corresponding picture data of the acquisition of different time in the middle of picture signal.
In brief, compared to traditional LCD drive g device, LCD drive g device 30 does not need extraly in the online start signal STH that transmits of each source electrode driver configuration circuit, to trigger the program that receives corresponding picture data.LCD drive g device 30 only need be by the arrangement of time schedule controller 302, utilize original polarity control signal sequentially to trigger respectively to be connected in series source electrode driver to receive corresponding picture data, to realize that each source electrode driver is in the purpose of the corresponding picture data of the acquisition of different time in the middle of picture signal.
Please refer to Fig. 5, Fig. 5 is the sequential chart of the coherent signal of the LCD drive g device 30 among Fig. 3.The corresponding signal of signal waveform from top to bottom is: differential wave LV1, LV2, LV3 (this take three as example, but not as limit), latch data signal LD, polarity control signal POL and panel output signal Xout.For the sake of clarity explanation, Fig. 5 only illustrates the part signal waveform.It should be noted that picture signal F includes differential wave LV1, LV2 and LV3, it is provided to leading source electrode driver SD_L and serial connection source electrode driver SD_1 and SD_2 together.Each all comprises a plurality of data segments in the middle of differential wave LV1, LV2, the LV3, for example, each differential wave includes data segments DATA1~DATA3, and it represents respectively the picture data under leading source electrode driver SD_L and serial connection source electrode driver SD_1 and the SD_2.In addition, the one at least in the middle of the differential wave is that differential wave LV1 comprises a replacement section RST for example, is used for triggering the picture data that leading source electrode driver SD_L receives each differential wave.As shown in Figure 5, when beginning during each operating cycle of latch data signal LD when occuring (pulse of latch data signal LD positive edge), the signal level of polarity control signal POL can be used to indicate the leading source electrode driver SD_L of expression and the signal polarity that is connected in series the source drive signal that source electrode driver SD_1 and SD_2 produce.For example, when time point T0 and T4, the signal level of polarity control signal POL is respectively noble potential and electronegative potential, therefore, as shown in Figure 5, the signal polarity of panel output signal Xout (the source drive signal that source electrode driver produces) also corresponds respectively to the signal polarity of polarity control signal POL.
Further, at (between two pulse waves of latch data signal LD) during each operating cycle of latch data signal LD, current stem driver SD_L and serial connection source electrode driver SD_1 and SD_2 can enter to armed state according to latch data signal LD respectively after receiving the replacement section RST of the positive edge of a pulse of latch data signal LD and picture signal F.At the same time, leading source electrode driver SD_L also can begin to receive picture data affiliated among the picture signal F, that is begins to receive the data of the data segments DATA1 in each differential wave.In other words, as shown in Figure 5, at time point T1, the replacement section RST of picture signal F triggers leading source electrode driver SD_L and receives corresponding picture data.It should be noted that sequential chart shown in Figure 5 is a preferable example only, and all different change types can be arranged.For instance, can utilize the start signal that is maintained a fixed voltage position standard, control leading source electrode driver SD_L and after entering this armed state, directly begin to receive corresponding data in the middle of the picture signal F.
On the other hand, please continue with reference to figure 5, during each operating cycle of latch data signal LD in, polarity news control number POL includes two transition edges in addition, corresponds respectively to the time that serial connection source electrode driver SD_1 and SD_2 are triggered.In other words, the sum at the transition edge of polarity news control number POL can equal to be connected in series the sum of source electrode driver in during each operating cycle of latch data signal LD.For example, when time point T2 and T3, polarity news control number POL can have respectively a low paramount transition edge, to trigger corresponding serial connection source electrode driver.Therefore, can before the starting point of corresponding data segments, trigger respectively serial connection source electrode driver SD_1 and SD_2 via polarity control signal POL and begin to receive corresponding data segments.
Specifically, each is connected in series the number that the transition edge occurs among the source electrode driver count enable polarity control signal POL, when begins to start to receive corresponding data segments to distinguish.For example, serial connection source electrode driver SD_1 can in detecting first low paramount transition edge when occuring (time point T2), begin to receive the data segments DATA2 in each differential wave.Serial connection source electrode driver SD_2 can in detecting second low paramount transition edge when occuring when (time point T3), begin to receive the data segments DATA3 in each differential wave.
In more detail, it is different that leading source electrode driver SD_L reaches the trigger condition that respectively is connected in series source electrode driver, and leading source electrode driver SD_L is the data that (time point T1) begins to receive the data segments DATA1 in each differential wave when the replacement section RST of the positive edge of a pulse that receives latch data signal LD and picture signal F.Serial connection source electrode driver SD_1 enters armed state behind the replacement section RST of the positive edge of a pulse that receives latch data signal LD and picture signal F, and when first the low paramount transition edge that receives polarity control signal POL occurs (for example time point T2), begin to receive the data of the data segments DATA2 in each differential wave.Serial connection source electrode driver SD_2 enters armed state behind the replacement section RST of the positive edge of a pulse that receives latch data signal LD and picture signal F, and (for example time point T3) begins to receive the data of the data segments DATA3 in each differential wave when second that receives polarity control signal POL low paramount transition edge generation.Therefore, as shown in Figure 5, leading source electrode driver SD_L and serial connection source electrode driver SD_1 and SD_2 will receive its corresponding picture data in different time.
Please continue with reference to figure 5, during each operating cycle of latch data signal LD, time schedule controller 302 is sequentially to trigger serial connection source electrode driver SD_1 and the SD_2 picture data under receiving among the picture signal F according to the number of times that the low paramount transition edge of polarity control signal POL occurs.In order to reach this purpose, signal that can be by other type or signal combination are arranged in pairs or groups polarity control signal POL so that respectively be connected in series the triggering that source electrode driver can receive the transition number of edges of correct polarity control signal POL, and the picture data under receiving sequentially among the picture signal F.
For instance, please refer to Fig. 6 and Fig. 7, as shown in Figure 6, leading source electrode driver SD_L be connected in series source electrode driver SD_1 and SD_2 and all include start signal input end STH_in and an initial signal output part STH_out, and can make up to define by setting the start signal input end STH_in voltage level different from an initial signal output part STH_out trigger sequence of each source electrode driver.That is to say, according to default voltage level combination, give the start signal input end voltage signal corresponding with the start signal output terminal of each source electrode driver, begin to receive picture data affiliated among the picture signal F to indicate corresponding source electrode driver Ying Yu when to be triggered.In the case, each source electrode driver can decide according to the accurate combination in the received position of its start signal input end and start signal output terminal and should be in the middle of polarity is interrogated control number can be triggered when which pulse or the generation of transition edge.
For instance, please refer to Fig. 7, wherein H represents the high voltage level, and L represents the low-voltage level, suppose that start signal input end STH_in is combined as with the voltage quasi position of corresponding start signal output terminal STH_out " HH " time, represent that this source electrode driver is a leading source electrode driver; Voltage quasi position is combined as " HL " time, represent that this source electrode driver is first serial connection source electrode driver; Voltage quasi position is combined as " LH " time, represent that this source electrode driver is second serial connection source electrode driver; Voltage quasi position is combined as " LL " time, represent that this source electrode driver is the 3rd serial connection source electrode driver.Therefore, please continue with reference to figure 6, because the start signal input end STH_in of leading source electrode driver SD_L and the voltage quasi position of start signal output terminal STH_out are combined as " HH ", leading source electrode driver SD_L will when the replacement section RST of the positive edge of a pulse that receives latch data signal LD and picture signal F (for example time point T1 among Fig. 5), begin to receive the data of the data segments DATA1 in each differential wave.Moreover, the start signal input end STH_in of serial connection source electrode driver SD_1 and the voltage quasi position of start signal output terminal STH_out are combined as " HL ", therefore, serial connection source electrode driver SD_1 will when first the low paramount transition edge that receives polarity control signal POL occurs (for example time point T2 among Fig. 5), begin to receive the data of the data segments DATA2 in each differential wave.The rest may be inferred, and serial connection source electrode driver SD_2 will when second that receives polarity control signal POL low paramount transition edge occurs (for example time point T3 among Fig. 5), begin to receive the data of the data segments DATA3 in each differential wave.
In sum, the polarity control signal POL that time schedule controller 302 produces more shoulders triggering and respectively is connected in series the opportunity that source electrode driver receives corresponding picture data except the function of the signal polarity of possessing the source drive signal that produces of each source electrode driver of control.Compared to traditional LCD drive g device, LCD drive g device 30 does not need extraly in the online start signal STH that transmits of each source electrode driver configuration circuit, and only need be by the arrangement of time schedule controller 302, utilize original polarity control signal to trigger respectively to be connected in series source electrode driver and receive corresponding picture data, can realize that each source electrode driver is in the purpose of the corresponding picture data of the acquisition of different time in the middle of picture signal, thus, can effectively dwindle circuit area and save production cost.
The above only is 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 (18)

1. driving method that is used for one source pole driver array, this source electrode driver array includes a leading source electrode driver and at least one serial connection source electrode driver, it is characterized in that, and this driving method includes:
Utilize the central replacement section of a latch data signal and a picture signal, at least one is connected in series source electrode driver and enters to respectively an armed state with this to control this leading source electrode driver, and triggers this leading driver and begin to receive corresponding data in the middle of this picture signal; And
Utilize a polarity control signal, sequentially trigger this at least one serial connection source electrode driver in different time and begin to receive corresponding data in the middle of this picture signal, and utilize this polarity control signal, at least one is connected in series the polarity of a plurality of source drive signals that source electrode driver produces with this to control this leading source electrode driver.
2. driving method as claimed in claim 1, it is characterized in that, in during each operating cycle of this latch data signal, an initial state of this polar signal is that at least one is connected in series the polarity of a plurality of source drive signals that source electrode driver produces with this for this leading source electrode driver of control.
3. driving method as claimed in claim 1, it is characterized in that, in during each operating cycle of this latch data signal, this polarity control signal has one or more transition edge, corresponds respectively to the time that this at least one serial connection source electrode driver is subject to this triggering.
4. driving method as claimed in claim 1, it is characterized in that, this picture signal comprises one or more differential wave, each this differential wave is to comprise many data sections, this corresponding data that comprises respectively this at least one serial connection source electrode driver, and this one or more transition edge of this polarity control signal lays respectively at before a starting point of the central corresponding person of these many data sections.
5. driving method as claimed in claim 1, it is characterized in that, this driving method also comprises and utilizes the initial signal be maintained a fixed voltage position standard, controls this leading source electrode driver and directly begin to receive corresponding data in the middle of this picture signal after entering this armed state.
6. driving method as claimed in claim 1, it is characterized in that, this driving method also comprises sets respectively one of separately voltage level of start signal input end and an initial signal output part of at least one serial connection source electrode driver of this leading source electrode driver and this, with the various combination that utilizes those voltage levels decide this leading source electrode driver and this at least one to be connected in series source electrode driver be respectively the triggering that is subject to which pulse in the middle of this polarity control signal.
7. a sequential control method is used for a LCD drive g device, it is characterized in that, this sequential control method includes:
Produce a picture signal, this picture signal is to comprise one or more differential wave, and each this differential wave is to comprise many data sections, and at least one is to comprise at least one replacement section in the middle of this one or more differential wave; And
Produce a polarity control signal, wherein in each operating cycle, this polar signal has one or more transition edge, lays respectively at before a starting point of the central corresponding person of these a plurality of data segments.
8. a LCD drive g device is characterized in that, includes:
Time schedule controller is used for producing a latch data signal, a polarity control signal and a picture signal; And
One source pole driver array, this source electrode driver array include a leading source electrode driver and at least one serial connection source electrode driver;
Wherein, this leading source electrode driver enters to an armed state according to the replacement section in this latch data signal and this picture signal and begins to receive corresponding data in the middle of this picture signal, this at least one serial connection source electrode driver enters to respectively this armed state according to this replacement section in this latch data signal and this picture signal, and this at least one be connected in series source electrode driver respectively according to the corresponding data of this polarity control signal in the middle of different time sequentially begins to receive this picture signal.
9. LCD drive g device as claimed in claim 8 is characterized in that, this leading source electrode driver and this at least one serial connection source electrode driver are according to this polarity control signal, decide the signal polarity of a plurality of source drive signals that produce.
10. LCD drive g device as claimed in claim 9, it is characterized in that, this leading source electrode driver and this at least one serial connection source electrode driver are within each operating cycle of this latch data signal, according to an initial state of this polarity control signal, the signal polarity of the source drive signal that decision produces.
11. LCD drive g device as claimed in claim 8, it is characterized in that, this leading source electrode driver is this replacement section that receives in this picture signal during each operating cycle of this latch data signal after, begin to receive the central corresponding data of this picture signal.
12. LCD drive g device as claimed in claim 8, it is characterized in that, in during each operating cycle of this latch data signal, this polarity control signal is to have one or more transition edge, corresponds respectively to the time that this at least one serial connection source electrode driver begins to receive the central corresponding data of this picture signal.
13. LCD drive g device as claimed in claim 8, it is characterized in that, this picture signal is to comprise one or more differential wave, each this differential wave is to comprise many data sections, this corresponding data that comprises respectively this at least one serial connection source electrode driver, and one or more transition edge of this polarity control signal is one of to lay respectively in the middle of these many data sections before a starting point of corresponding person.
14. LCD drive g device as claimed in claim 8 is characterized in that, this leading source electrode driver is according to an initial signal that is maintained a fixed voltage position standard, directly begins to receive the corresponding data in the middle of this picture signal after entering this armed state.
15. LCD drive g device as claimed in claim 8, it is characterized in that, each is to have an initial signal input part and an initial signal output part in the middle of at least one serial connection source electrode driver of this leading source electrode driver and this, the triggering that is subject to which pulse in the middle of this polarity control signal to control it for the setting that receives different voltage levels.
16. a time schedule controller is characterized in that, this time schedule controller includes:
One picture signal generation unit is used for producing a picture signal, and this picture signal is to comprise one or more differential wave, and each this differential wave is to comprise many data sections, and the one in the middle of this one or more differential wave comprises an at least replacement section; And
The one, system sequential control generation unit is used for producing a polarity control signal, and wherein in each operating cycle, this polar signal has one or more transition edge, lays respectively at before a starting point of the central corresponding person of these a plurality of data segments.
17. a source electrode driver array is characterized in that, this source electrode driver array includes:
One leading source electrode driver; And
At least one is connected in series source electrode driver;
Wherein, this leading source electrode driver according to a latch data signal with a picture signal in a replacement section enter to an armed state and begin to receive corresponding data in the middle of this picture signal, this at least one serial connection source electrode driver enters to respectively this armed state according to this replacement section in this latch data signal and this picture signal, and this at least one be connected in series source electrode driver respectively according to the corresponding data of a polarity control signal in the middle of different time sequentially begins to receive this picture signal.
18. source electrode driver array as claimed in claim 17, it is characterized in that, this leading source electrode driver and this at least one serial connection source electrode driver are more within each operating cycle of this latch data signal, according to the state of this polarity control signal, the signal polarity of the source drive signal that decision produces.
CN2011102034827A 2011-07-20 2011-07-20 Source driver array and drive method of source driver array as well as liquid crystal drive device Pending CN102890919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011102034827A CN102890919A (en) 2011-07-20 2011-07-20 Source driver array and drive method of source driver array as well as liquid crystal drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011102034827A CN102890919A (en) 2011-07-20 2011-07-20 Source driver array and drive method of source driver array as well as liquid crystal drive device

Publications (1)

Publication Number Publication Date
CN102890919A true CN102890919A (en) 2013-01-23

Family

ID=47534407

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011102034827A Pending CN102890919A (en) 2011-07-20 2011-07-20 Source driver array and drive method of source driver array as well as liquid crystal drive device

Country Status (1)

Country Link
CN (1) CN102890919A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN112382226A (en) * 2020-11-27 2021-02-19 Tcl华星光电技术有限公司 Data driving chip and display device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW521246B (en) * 2000-02-14 2003-02-21 Nec Corp Drive circuit of display unit
KR20040078446A (en) * 2003-03-04 2004-09-10 비오이 하이디스 테크놀로지 주식회사 The method of controlling source drive integrated circuit in liquid crystal disply device
US20050152189A1 (en) * 2004-01-14 2005-07-14 Samsung Electronics Co., Ltd. Display device
CN1870115A (en) * 2005-05-26 2006-11-29 凌阳科技股份有限公司 Time sequence controller and source driver of liquid crystal panel and control method and circuit
US20070139337A1 (en) * 2005-12-19 2007-06-21 Liang-Hua Yeh Display panel driving device for reducing crosstalk and driving method thereof
CN101246670A (en) * 2007-02-17 2008-08-20 联詠科技股份有限公司 Serial data transmission method and correlated device used for display device
CN101615383A (en) * 2008-06-23 2009-12-30 联咏科技股份有限公司 Be used for driving method and relevant apparatus that LCD reduces consumed power

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW521246B (en) * 2000-02-14 2003-02-21 Nec Corp Drive circuit of display unit
KR20040078446A (en) * 2003-03-04 2004-09-10 비오이 하이디스 테크놀로지 주식회사 The method of controlling source drive integrated circuit in liquid crystal disply device
US20050152189A1 (en) * 2004-01-14 2005-07-14 Samsung Electronics Co., Ltd. Display device
CN1870115A (en) * 2005-05-26 2006-11-29 凌阳科技股份有限公司 Time sequence controller and source driver of liquid crystal panel and control method and circuit
US20070139337A1 (en) * 2005-12-19 2007-06-21 Liang-Hua Yeh Display panel driving device for reducing crosstalk and driving method thereof
CN101246670A (en) * 2007-02-17 2008-08-20 联詠科技股份有限公司 Serial data transmission method and correlated device used for display device
CN101615383A (en) * 2008-06-23 2009-12-30 联咏科技股份有限公司 Be used for driving method and relevant apparatus that LCD reduces consumed power

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN112382226A (en) * 2020-11-27 2021-02-19 Tcl华星光电技术有限公司 Data driving chip and display device
CN112382226B (en) * 2020-11-27 2022-04-26 Tcl华星光电技术有限公司 Data driving chip and display device

Similar Documents

Publication Publication Date Title
CN102129845B (en) Liquid crystal panel driving circuit and liquid crystal display device
CN103137207B (en) Shift temporary storage device
TWI518653B (en) Timing controller, source driving device, panel driving device, display device and driving method
US8570268B2 (en) Driving method of liquid crystal display
CN106294244B (en) USB Type-C interface circuit
CN107103870A (en) Shifting deposit unit, its driving method and display panel
CN103117091A (en) Shift buffer and driving method thereof
CN102610201A (en) Data processing method, data driving circuit and display device including the same
KR100751441B1 (en) Flat panel display and source driver thereof
KR102046847B1 (en) Timing controller, driving method thereof and liquid crystal display using the same
US9424949B2 (en) Shift register circuit
CN105513522A (en) Shifting register, driving method thereof, drive circuit and display device
TW201303838A (en) Source driver array and driving method, timing controller and timing controlling method, and LCD driving device
CN103985345B (en) Shift register circuit
CN103443847A (en) Display device, and driving method
CN102890919A (en) Source driver array and drive method of source driver array as well as liquid crystal drive device
CN103971656A (en) Display panel and gate driver
CN103578403A (en) Shift register circuit
CN106325633B (en) In-cell touch display panel and its driving method
CN101320540A (en) Driver for reducing a noise, display device having the driver, and method thereof
CN102693693A (en) Display panel drive device, semiconductor integrated device, and image data acquisition method
CN103366665B (en) Level shift circuit and driving method thereof
CN102568404B (en) Time schedule controller, source electrode and panel driving device, display device and driving method
CN104409063B (en) Display panel, gate driver and control method
CN101494040B (en) Drive device for driving liquid crystal display panel

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130123