CN101556770B - Method and device for driving liquid crystal display to lower power supply noises - Google Patents
Method and device for driving liquid crystal display to lower power supply noises Download PDFInfo
- Publication number
- CN101556770B CN101556770B CN2008100886500A CN200810088650A CN101556770B CN 101556770 B CN101556770 B CN 101556770B CN 2008100886500 A CN2008100886500 A CN 2008100886500A CN 200810088650 A CN200810088650 A CN 200810088650A CN 101556770 B CN101556770 B CN 101556770B
- Authority
- CN
- China
- Prior art keywords
- frame
- source electrode
- signal
- electrode channel
- channel output
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a method and a device for driving a liquid crystal display to lower power supply noises. The method comprises the following steps: receiving a plurality of source electrode channel output signals which correspond to a scanning beam of a first frame; and outputting the source electrode channel output signals which correspond to the scanning beam for multiple times at different time to drive the liquid crystal display to display the scanning beam, wherein at least two of the source electrode channel output signals are output simultaneously in at least one time.
Description
Technical field
The present invention relates to a kind of driving method and relevant apparatus thereof that a LCD reduces power supply noise that be used for, being particularly related to a kind of a plurality of source electrode channel output signal with this LCD is divided into repeatedly, in different time output, to reduce the driving method and the relevant apparatus thereof of power supply noise.
Background technology
LCD has that external form is frivolous, power consumption is few and characteristic such as radiationless pollution, has been widely used on the information products such as computer system, mobile phone, PDA(Personal Digital Assistant).The principle of work system of LCD utilizes liquid crystal molecule under different ordered states, light had different polarizations or refraction effect, therefore can control the amount of penetrating of light via the liquid crystal molecule of different ordered states, further produce the output light of varying strength, and the red, green, blue of different GTG intensity.
Please refer to Fig. 1, Fig. 1 is existing thin film transistor (TFT) (Thin Film Transistor, TFT) synoptic diagram of LCD 10.LCD 10 comprises a display panels (LCD Panel) 100, time schedule controller (Timing Controller) 102, one data line signal output circuit 104, one scan line signal output apparatus 106 and a voltage generator 108.Display panels 100 is to be made of two substrates (Substrate), and is filled with liquid crystal material (LC layer) between two substrates.One substrate is provided with many data lines (Data Line) 110, many (the Scan Line of the sweep trace perpendicular to data line 110, or title gate line, Gate Line) 112 and a plurality of thin film transistor (TFT) 114, and being provided with a public electrode (Common Electrode), another substrate is used for providing a common electric voltage (Vcom) via voltage generator 108.For ease of explanation, only show four thin film transistor (TFT)s 114 among Fig. 1, in fact, each data line 110 all is connected with a thin film transistor (TFT) 114 with the junction (Intersection) of sweep trace 112 in the display panels 100, that is thin film transistor (TFT) 114 is that mode with matrix is distributed on the display panels 100, each data line 110 is corresponding to the delegation (Column) of Thin Film Transistor-LCD 10, and sweep trace 112 is corresponding to the delegation (Row) of Thin Film Transistor-LCD 10, and each thin film transistor (TFT) 114 is corresponding to a pixel (Pixel).The circuit characteristic that two substrates constituted of display panels 100 can be considered an equivalent electric capacity 116.On the other hand, data line signal output circuit 104 is made up of the multiple source driver, and scanning-line signal output circuit 106 is made up of a plurality of gate drivers, and source electrode driver or gate drivers can drive a plurality of thin film transistor (TFT)s 114.The source electrode driver that Thin Film Transistor-LCD 10 is required and the quantity of gate drivers are decided according to its resolution.
Details are as follows for the drive principle of existing Thin Film Transistor-LCD 10.Time schedule controller 102 produces a horizontal-drive signal STH, a horizontal clock signal C PH, a vertical synchronizing signal STV, a vertical clock signal CPV, a latch signal LD, a reversal of poles control signal POL and an output enable signal OE.Vertical synchronizing signal STV is the start signal of a frame (Frame).Data line signal output circuit 104 is according to horizontal-drive signal STH and horizontal clock signal C PH, one digital data signal DATA is converted to the one source pole channel output signal, it is an analog voltage signal, and according to the output of latch signal LD control source electrode channel output signal, and according to the alternating polarity of reversal of poles control signal POL control source electrode channel output signal, and then drive thin film transistors 114.On the other hand, scanning-line signal output circuit 106 can produce a voltage signal according to vertical synchronizing signal STV and vertical clock signal CPV, and by the output of output enable signal OE with the control voltage signal, and then the on off state of control TFT 114.In brief, the potential difference (PD) at the conducting of data line signal output circuit 104 and scanning-line signal output circuit 106 control TFT 114 and equivalent capacity 116 two ends, and change the arrangement and the corresponding light penetration amount of liquid crystal molecule further, and then data-signal DATA is presented on the display panels 100.
In addition, details are as follows about the effect of reversal of poles control signal POL.In LCD 10, if use the voltage of same polarity constantly to drive liquid crystal molecule always, can reduce polarization or the refraction effect of liquid crystal molecule to light, the quality that frame is shown worsens.Therefore, for the destruction of protecting liquid crystal molecule not to be subjected to driving voltage, must use the generating positive and negative voltage alternant way to drive liquid crystal molecule, as existing row inversion driving (Line Inversion) or single-point inversion driving (Dot Inversion) mode.Therefore, reversal of poles control signal POL promptly is used for the control channel output signal polarity of overturning when frame switches, make the polarity of single pixel in the display panels 100 switch and change along with frame.
As previously mentioned, thin film transistor (TFT) 114 is distributed on the display panels 100 in the mode of matrix, and each data line 110 is corresponding to the delegation of Thin Film Transistor-LCD 10, and sweep trace 112 is corresponding to the delegation of Thin Film Transistor-LCD 10.It should be noted that in the prior art data-signal DATA exports simultaneously with a behavior unit of matrix, and pursue row drive thin film transistors 114, and then show the view data of a frame.Please refer to Fig. 2, Fig. 2 is the driving sequential chart of Thin Film Transistor-LCD 10, the sequential relationship of the source electrode channel output signal that expression horizontal-drive signal STH, horizontal clock signal C PH, vertical synchronizing signal STV, vertical clock signal CPV, latch signal LD, reversal of poles control signal POL, output enable signal OE and data line signal output circuit 104 are exported.For convenience of description, the data line signal output circuit 104 of Fig. 2 is divided into odd number and even number source electrode driver group, and the source electrode channel output signal that each source electrode driver group is exported is divided into odd number and even number source electrode channel output signal again.In addition, the polarity of reversal of poles control signal POL of controlling adjacent two frames is opposite, so frame is when switching, the pixel reverse of same block in the reversal of poles control signal POL may command display panels 100.
As shown in Figure 2, the method that available data signal DATA exports simultaneously with a behavior unit of matrix, to make data line signal output circuit 104 (all source electrode drivers) all export delegation's source electrode channel output signal at one time, therefore can produce tangible power supply noise, influence the power supply of Thin Film Transistor-LCD 10, to influence the display quality of Thin Film Transistor-LCD 10 when serious, even produce electromagnetic interference (EMI).
Summary of the invention
Therefore, fundamental purpose of the present invention promptly is to provide a kind of driving method and relevant apparatus thereof that a LCD reduces power supply noise that be used for, to improve the display quality of this LCD.
The present invention discloses a kind of driving method that a LCD reduces power supply noise that is used for, and includes a plurality of source electrode channel output signal of reception corresponding to the one scan line of one first frame; And will be divided into corresponding to these a plurality of source electrode channel output signal of this sweep trace repeatedly in different time output, to drive this sweep trace of this liquid crystal display displays; Wherein, in this was repeatedly exported, having at least once, output was at least two source electrode channel output signal of exporting these a plurality of source electrode channel output signal simultaneously.
The present invention discloses a kind of driving method that a LCD reduces power supply noise that is used in addition, include a plurality of source electrode channel output signal of reception corresponding to each first sweep trace of many first sweep traces of one first frame, and corresponding to a plurality of source electrode channel output signal of each second sweep trace of many second sweep traces of one second frame; According to a control signal, to be divided into repeatedly corresponding to these a plurality of source electrode channel output signal of each first sweep trace, export in proper order according to one first output, to drive this first frame of this liquid crystal display displays, and according to this control signal, to be divided into repeatedly corresponding to these a plurality of source electrode channel output signal of each second sweep trace, export in proper order according to one second output, to drive this second frame of this liquid crystal display displays; Wherein, this first output order is different with this second output order, and this first output order and this second output are used for compensating mutually the driving time difference of a plurality of source electrode channels of this LCD in proper order.
The present invention discloses a kind of LCD of noise capable of reducing power source in addition, includes a panel; Time schedule controller is used for producing a control signal and a data-signal; One scan line signal output apparatus is coupled to this panel and this time schedule controller, is used for driving this panel and shows one first frame and one second frame; One data line signal output circuit is coupled to this panel and this time schedule controller, is used for changing this data-signal to drive this panel.The data line signal output circuit includes a receiving element, be used for receiving a plurality of source electrode channel output signal corresponding to each first sweep trace of many first sweep traces of this first frame, and corresponding to a plurality of source electrode channel output signal of each second sweep trace of many second sweep traces of this second frame; An and output unit, be used for according to this control signal, to be divided into repeatedly corresponding to these a plurality of source electrode channel output signal of each first sweep trace of these many first sweep traces, export in proper order according to one first output, show this first frame to drive this panel, and will be divided into repeatedly corresponding to these a plurality of source electrode channel output signal of each second sweep trace of these many second sweep traces, export in proper order according to one second output, show this second frame to drive this panel; Wherein, this first output order is different with this second output order, and this first output order and this second output are used for compensating mutually the driving time difference of a plurality of source electrode channels of this LCD in proper order.
Description of drawings
Fig. 1 is the synoptic diagram of an existing Thin Film Transistor-LCD.
Fig. 2 is the driving sequential chart of the Thin Film Transistor-LCD of Fig. 1.
Fig. 3 and Fig. 4 are the synoptic diagram of embodiment of the invention flow process.
Fig. 5 is the driving sequential chart of the LCD of the flow process of use Fig. 4.
Fig. 6 and Fig. 7 are the synoptic diagram of the embodiment of the invention one LCD.
The reference numeral explanation
10 Thin Film Transistor-LCDs
100 display panels
102 time schedule controllers
104 data line signal output circuits
106 scanning-line signal output circuits
108 voltage generators
110 data lines
112 sweep traces
114 thin film transistor (TFT)s
116 equivalent capacitys
60 LCD
600 panels
602 time schedule controllers
604 scanning-line signal output circuits
606 data line signal output circuits
610 receiving elements
612 output units
The DATA data-signal
The STH horizontal-drive signal
The horizontal clock signal of CPH
The STV vertical synchronizing signal
The CPV vertical clock signal
The LD latch signal
POL reversal of poles control signal
OE output enable signal
30,40 flow processs
300,302,304,306,400,402,404,406 steps.
Embodiment
In the available liquid crystal display, frame data are that the behavior unit with matrix shows that simultaneously all source electrode channel output signal are to export at one time.Therefore, the power supply of LCD is easy to generate noise and influences the display quality of frame.The source electrode channel output signal of may command LCD of the present invention is divided into repeatedly different time with it and exports, to reduce the interference to power supply.
For convenience of description, suppose that a LCD includes M grid channel and N source electrode channel.LCD is the display frame data continuously, and each frame data can be considered by M bar sweep trace to be formed, and each bar sweep trace all corresponds to N the source electrode channel output signal that a data line signal output circuit of LCD is produced.N source electrode channel output signal is used for a driving N source electrode channel display frame data.Please refer to Fig. 3, Fig. 3 is the synoptic diagram of the embodiment of the invention one flow process 30.Flow process 30 comprises following steps:
Step 300: beginning.
Step 302: reception is corresponding to N source electrode channel output signal of one first sweep trace of the M bar sweep trace of one first frame.
Step 304: N source electrode channel output signal of first sweep trace is divided into K time exports at different time, to drive liquid crystal display displays first sweep trace, wherein, output is at least two source electrode channel output signal exporting N source electrode channel output signal simultaneously each time, K 〉=2.
Step 306: finish.
Below further specifying the running of flow process 30, is example with K=2, and N source electrode channel output signal will be divided into twice and export at different time.If N source electrode channel output signal produced by 6 source electrode driver SD1-SD6, then source electrode driver SD1, SD3, SD5 can export (N/2) individual source electrode channel output signal earlier simultaneously, and then source electrode driver SD2, SD4, SD6 export (N/2) individual source electrode channel output signal more simultaneously.Note that at this purpose of aforementioned operation is to disperse the driving time of one-row pixels (corresponding N source electrode channel), make to drive to operate not to be concentrated in a certain special time, to reduce the degree that power supply disturbs; In addition, though in the present embodiment, the present invention utilizes source electrode driver to drive the control of operation as base unit, and this only is for the convenience on controlling, but not restriction of the present invention; In actual operation, the present invention can also " channel " or " a plurality of channel " drive as a base unit, and the time that drives can disperse more, for instance, the present invention also can be divided into three subclass with delegation (sweep trace), and once only export N/3 source electrode channel output signal, so corresponding variation also belongs to category of the present invention.
As from the foregoing, according to flow process 30, LCD can be divided into N source electrode channel output signal corresponding to each bar first sweep trace of first frame K time in different time output, shows each bar first sweep trace so one by one, just can show first frame.
Then, after first frame, LCD also can show one second frame continuously according to flow process 30.The demonstration time of second frame is adjacent with the demonstration time of first frame.In other words, also can be divided into K time in different time output, show each bar second sweep trace one by one, and then show second frame corresponding to N source electrode channel output signal of each bar second sweep trace of second frame.On the other hand, LCD is by the reversal of poles control signal that time schedule controller produced, and the control source electrode channel output signal polarity of overturning when frame switches is with the destruction of protecting liquid crystal molecule not to be subjected to driving voltage.Therefore, in a preferred embodiment of the present invention, output order corresponding to N source electrode channel output signal of each bar second sweep trace of second frame, identical with output order corresponding to N source electrode channel output signal of each bar first sweep trace of first frame, and the pixel polarity of second frame is opposite with the pixel polarity of first frame.In other words, for opposite polarity contiguous frames, the present invention adopts in a like fashion and drives; Yet such practice is one embodiment of the invention only also, in actual operation, also two frames can be driven with different orders, so also without prejudice to spirit of the present invention.
On the other hand, export at different time, cause the duration of charging length difference of the pixel capacitance of correspondence because LCD will be divided into K time corresponding to N source electrode channel output signal of each bar first sweep trace of first frame according to flow process 30.Therefore, LCD needs after first frame, changes the driving order of source electrode channel in another frame, to compensate in first frame because the capacitor charging time difference that the driving time difference of source electrode channel is caused.Please refer to Fig. 4, Fig. 4 is the synoptic diagram of the embodiment of the invention one flow process 40.Flow process 40 comprises following steps:
Step 400: beginning.
Step 402: receive N source electrode channel output signal, reach N source electrode channel output signal corresponding to each second sweep trace of M bar second sweep trace of one second frame corresponding to each first sweep trace of M bar first sweep trace of one first frame.
Step 404: according to a control signal, to be divided into K time corresponding to N source electrode channel output signal of each first sweep trace exports in proper order according to one first output, to drive liquid crystal display displays first frame, and will be divided into K time corresponding to N source electrode channel output signal of each second sweep trace and export in proper order according to one second output, to drive liquid crystal display displays second frame; Wherein, K 〉=2 and first output order is different with second output order, and first output order and second output are used for compensating mutually the driving time difference of N source electrode channel of LCD in proper order.
Step 406: finish.
Note that in flow process 40 that at this first output order and second output are used for compensating mutually the driving time difference of N source electrode channel of LCD in proper order, therefore, control signal is necessary for the initial signal of a decidable frame.The embodiment of the invention be with vertical synchronizing signal as control signal, or can carry control signal by the reversal of poles control signal.It should be noted that this area tool knows that usually the knowledgeable can do suitable variation and modification according to this, provides control signal with the different practices.
Below further specify the running of flow process 40.With K=2 is example, suppose that N source electrode channel output signal produced by 6 source electrode driver SD1-SD6, flow process 40 is divided into twice with N source electrode channel output signal, exports in proper order according to first output, with a driving N source electrode channel, and then show first frame, then, similarly again N source electrode channel output signal is divided into twice, exports in proper order according to second output, with a driving N source electrode channel, and then show second frame.For instance, first output can be source electrode driver SD1, SD3, SD5 in proper order and exports (N/2) individual source electrode channel output signal earlier simultaneously, and then source electrode driver SD2, SD4, SD6 export (N/2) individual source electrode channel output signal more simultaneously; Second output can be source electrode driver SD2, SD4, SD6 in proper order and exports (N/2) individual source electrode channel output signal earlier simultaneously, and then source electrode driver SD1, SD3, SD5 export (N/2) individual source electrode channel output signal more simultaneously.
Please note at this, N source electrode channel output signal is divided into twice is output as one embodiment of the invention, this area tool knows that usually the knowledgeable can do suitable variation and modification according to this, for example N source electrode channel output signal can be divided into three times in different time output, then the output of N source electrode channel output signal order then need arrange to make each output be able to mutual compensation in proper order.In addition, by as can be known aforementioned, first output order and second output order can compensate the driving time difference of N source electrode channel mutually, avoid influencing display quality because of the duration of charging of pixel capacitance difference.
Please notice that in addition in flow process 40, the demonstration time of first frame and the demonstration time of second frame have no particular limits at this; Therefore, on real the work, the present invention can preferably utilize next and first frame to have the frame (that is with first frame be separated by the frame of a frame) of identical polar, carries out the compensation in duration of charging.In other words, LCD can show opposite polarity the 3rd frame continuously according to aforesaid flow process 30,40 after first frame, show second frame with identical polar afterwards again; That is to say that LCD will be divided into K time corresponding to N source electrode channel output signal of each three scan line of M article of three scan line of the 3rd frame, exports in proper order according to first output, and then shows the 3rd frame.Simultaneously, LCD is by the reversal of poles control signal, and the control source electrode channel output signal polarity of overturning when frame switches makes the pixel polarity of the 3rd frame opposite with the pixel polarity of first frame.Similarly, LCD can show one the 4th frame continuously according to flow process 30 after second frame, that is to say, to be divided into K time corresponding to N source electrode channel output signal of each the 4th sweep trace of M article of the 4th sweep trace of the 4th frame, export in proper order according to second output, and then show the 4th frame.Simultaneously, the pixel polarity of the 4th frame is opposite with the pixel polarity of second frame.As from the foregoing, if K=2, N source electrode channel output signal corresponding to first frame and the 3rd frame is to export in proper order with first output, and be to export in proper order with second output corresponding to N source electrode channel output signal of second frame and the 4th frame, the output time relation of each frame is first frame, the 3rd frame, second frame and the 4th frame in regular turn.
In simple terms, in the foregoing embodiments, the switching of output order is to be base unit with two frames; For the successive frame of two opposed polarities, the present invention adopts identical output to drive it in proper order; And for the frame of identical polar, the present invention drives it in proper order with different output, with the time of building-out capacitor charging.
Please refer to Fig. 5, Fig. 5 is the driving sequential chart of the LCD of use flow process 40, wherein, with the first above-mentioned frame, the 3rd frame, second frame and the 4th frame is example, and the sequential relationship of a horizontal-drive signal STH, a horizontal clock signal C PH, a vertical synchronizing signal STV, a vertical clock signal CPV, a latch signal LD, a reversal of poles control signal POL, an output enable signal OE and source electrode channel output signal is described.Control signal is entrained by reversal of poles control signal POL.In Fig. 5, the N of LCD source electrode channel output signal is to be divided into twice output successively, in other words, (N/2) the individual source electrode channel output signal that N source electrode channel output signal is divided into odd number source electrode driver group, and (N/2) individual source electrode channel output signal of even number source electrode driver group, odd number source electrode driver group and even number source electrode driver group export at different time.In first frame and the 3rd frame, odd number source electrode driver group is output earlier, and even number source electrode driver group exports again; And in second frame and the 4th frame, the output of odd number and even number source electrode driver group exchanges in proper order, and by the output earlier of even number source electrode driver group, group exports again by the odd number source electrode driver.Thus, the 3rd frame compensates first frame, and the 4th frame compensates second frame.
In addition, in Fig. 5, LCD is the polarity upset when upgrading with single-point inversion driving (Dot Inversion) mode achieve frame, and therefore, (N/2) individual source electrode channel output signal that each source electrode driver group is exported is further divided into odd number and even number source electrode channel output signal separately.It should be noted that, Fig. 5 is the driving sequential chart of one embodiment of the invention, and this area tool knows that usually the knowledgeable can do suitable variation and modification according to this, for instance, the mode of pixel polarity inversion is not limited to the single-point inversion driving, or control signal can substitute with vertical synchronizing signal STV.
Realization about flow process 40 please refer to Fig. 6, and Fig. 6 is the synoptic diagram of the embodiment of the invention one LCD 60.LCD 60 comprises a panel 600, time schedule controller 602, one scan line signal output apparatus 604 and a data line signal output circuit 606.Time schedule controller 602 is used for producing vertical synchronizing signal STV, vertical clock signal CPV, horizontal-drive signal STH, horizontal clock signal C PH, latch signal LD, reversal of poles control signal POL, output enable signal OE, a control signal and a data-signal DATA.Control signal is entrained by reversal of poles control signal POL.Scanning-line signal output circuit 604 is coupled to panel 600 and time schedule controller 602, is used for driving panel 600 and shows a plurality of frames.Data line signal output circuit 606 is coupled to panel 600 and time schedule controller 602, includes a receiving element 610 and an output unit 612, and receiving element 610 is coupled to output unit 612.About the detailed operation mode of receiving element 610 and output unit 612, but reference flowchart 40 is not given unnecessary details at this.In brief, data line signal output circuit 606 is according to horizontal-drive signal STH and horizontal clock signal C PH, by receiving element 610 and output unit 612 data-signal DATA is converted to the source electrode channel output signal, and according to the output of latch signal LD control source electrode channel output signal, and according to the alternating polarity of reversal of poles control signal POL control source electrode channel output signal, and then drive panel 600.In addition, data line signal output circuit 606 and basis are hidden the control signal in reversal of poles control signal POL, carry out the compensation of capacitor charging time.
On the other hand, because the compensation of capacitor charging time system is a unit with the frame, so control signal is except being carried by reversal of poles control signal POL, the also start signal of available frame, and promptly vertical synchronizing signal STV replaces.Please refer to Fig. 7, Fig. 7 is similar to Fig. 6, and difference is: in the present embodiment, aforesaid control signal is vertical synchronizing signal STV; Therefore, among Fig. 7, vertical synchronizing signal STV inputs to data line signal output circuit 606 (shown in the dotted line of Fig. 7) in addition, carries out the compensation of capacitor charging time.In addition, among Fig. 7 the running of other unit then as shown in Figure 6, so do not give unnecessary details in addition.
In sum, the present invention is divided into repeatedly source electrode channel output signal all in the LCD in different time output, and by changing the output order of source electrode channel output signal, the driving time difference to the source electrode channel in different frames compensates.Therefore, the present invention can reduce the interference to power supply of source electrode channel output signal when output, and then promotes the display quality of LCD.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (8)
1. one kind is used for the driving method that a LCD reduces power supply noise, includes:
Reception is corresponding to a plurality of source electrode channel output signal of each first sweep trace of many first sweep traces of one first frame, corresponding to a plurality of source electrode channel output signal of each second sweep trace of many second sweep traces of one second frame, corresponding to a plurality of source electrode channel output signal of each three scan line of many articles of three scan lines of one the 3rd frame with corresponding to a plurality of source electrode channel output signal of each the 4th sweep trace of many articles the 4th sweep traces of one the 4th frame;
According to a control signal, will be divided into repeatedly corresponding to these a plurality of source electrode channel output signal of each first sweep trace, export in proper order according to one first output, to drive this first frame of this liquid crystal display displays;
According to this control signal, to be divided into repeatedly corresponding to these a plurality of source electrode channel output signal of each second sweep trace, according to exporting in proper order with different second output of this first output order, driving this second frame of this liquid crystal display displays, and the pixel polarity of this second frame is identical with the pixel polarity of this first frame;
According to this control signal, to be divided into repeatedly corresponding to a plurality of source electrode channel output signal of each three scan line, export in proper order according to this first output, driving this liquid crystal display displays the 3rd frame, and the pixel polarity of the 3rd frame is opposite with the pixel polarity of this second frame; And
According to this control signal, to be divided into repeatedly corresponding to a plurality of source electrode channel output signal of each the 4th sweep trace, export in proper order according to this second output, driving this liquid crystal display displays the 4th frame, and the pixel polarity of the 4th frame is identical with the pixel polarity of the 3rd frame;
Wherein, this first frame, the 3rd frame, this second frame and the 4th frame are to show in regular turn.
2. driving method as claimed in claim 1, wherein, this control signal is used to judge the initial of this first frame and this second frame.
3. driving method as claimed in claim 2, wherein, this control signal is a vertical synchronizing signal.
4. driving method as claimed in claim 1, wherein, this control signal is entrained by a reversal of poles control signal.
5. the LCD of a noise capable of reducing power source includes:
One panel;
Time schedule controller is used for producing a control signal and a data-signal;
One scan line signal output apparatus is coupled to this panel and this time schedule controller, is used for driving this panel and shows one first frame, one second frame, one the 3rd frame and one the 4th frame;
One data line signal output circuit is coupled to this panel and this time schedule controller, is used for changing this data-signal to drive this panel, includes:
One receiving element is used for receiving a plurality of source electrode channel output signal corresponding to each first sweep trace of many first sweep traces of this first frame, corresponding to a plurality of source electrode channel output signal of each second sweep trace of many second sweep traces of this second frame, corresponding to a plurality of source electrode channel output signal of each three scan line of many articles of three scan lines of the 3rd frame with corresponding to a plurality of source electrode channel output signal of each the 4th sweep trace of many articles the 4th sweep traces of the 4th frame; And
One output unit is coupled to this receiving element, is used for:
According to this control signal, will be divided into repeatedly corresponding to these a plurality of source electrode channel output signal of each first sweep trace, export in proper order according to one first output, to drive this first frame of this liquid crystal display displays;
According to this control signal, to be divided into repeatedly corresponding to these a plurality of source electrode channel output signal of each second sweep trace, according to exporting in proper order with different second output of this first output order, driving this second frame of this liquid crystal display displays, and the pixel polarity of this second frame is identical with the pixel polarity of this first frame;
According to this control signal, to be divided into repeatedly corresponding to a plurality of source electrode channel output signal of each three scan line, export in proper order according to this first output, driving this liquid crystal display displays the 3rd frame, and the pixel polarity of the 3rd frame is opposite with the pixel polarity of this second frame; And
According to this control signal, to be divided into repeatedly corresponding to a plurality of source electrode channel output signal of each the 4th sweep trace, export in proper order according to this second output, driving this liquid crystal display displays the 4th frame, and the pixel polarity of the 4th frame is identical with the pixel polarity of the 3rd frame;
Wherein, this first frame, the 3rd frame, this second frame and the 4th frame are to show in regular turn.
6. LCD as claimed in claim 5, wherein, this control signal is used to judge the initial of this first frame and this second frame.
7. LCD as claimed in claim 6, wherein, this control signal is a vertical synchronizing signal.
8. LCD as claimed in claim 5, wherein, this control signal is that a reversal of poles control signal that is produced by this time schedule controller is entrained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100886500A CN101556770B (en) | 2008-04-10 | 2008-04-10 | Method and device for driving liquid crystal display to lower power supply noises |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100886500A CN101556770B (en) | 2008-04-10 | 2008-04-10 | Method and device for driving liquid crystal display to lower power supply noises |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101556770A CN101556770A (en) | 2009-10-14 |
| CN101556770B true CN101556770B (en) | 2011-09-21 |
Family
ID=41174867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100886500A Expired - Fee Related CN101556770B (en) | 2008-04-10 | 2008-04-10 | Method and device for driving liquid crystal display to lower power supply noises |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101556770B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943075A (en) * | 2013-01-23 | 2014-07-23 | 联咏科技股份有限公司 | Gate driving circuit and gate line driving method for display panel |
| KR102371896B1 (en) * | 2015-06-29 | 2022-03-11 | 삼성디스플레이 주식회사 | Method of driving display panel and display apparatus for performing the same |
| KR20210059391A (en) * | 2019-11-15 | 2021-05-25 | 엘지디스플레이 주식회사 | Organic light emitting diode display device and driving method thereof |
| CN112562601A (en) * | 2020-12-21 | 2021-03-26 | 上海树泉信息技术有限公司 | Optimal backlight time calculation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773593A (en) * | 2004-11-08 | 2006-05-17 | 三星Sdi株式会社 | Organic light emitting display and driving method thereof |
| CN1941058A (en) * | 2005-09-26 | 2007-04-04 | 株式会社瑞萨科技 | Display control/drive device and display system |
| CN101145325A (en) * | 2006-09-14 | 2008-03-19 | 恩益禧电子股份有限公司 | Driving circuit and data driver of planar display device |
-
2008
- 2008-04-10 CN CN2008100886500A patent/CN101556770B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773593A (en) * | 2004-11-08 | 2006-05-17 | 三星Sdi株式会社 | Organic light emitting display and driving method thereof |
| CN1941058A (en) * | 2005-09-26 | 2007-04-04 | 株式会社瑞萨科技 | Display control/drive device and display system |
| CN101145325A (en) * | 2006-09-14 | 2008-03-19 | 恩益禧电子股份有限公司 | Driving circuit and data driver of planar display device |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2004-101855A 2004.04.02 |
| JP特开2006-133731A 2006.05.25 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101556770A (en) | 2009-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102737596B (en) | Liquid crystal display | |
| CN102819157B (en) | Display panels and display device | |
| CN100483488C (en) | Display device | |
| CN101877212B (en) | Liquid crystal display device and method of driving the same | |
| CN101572064B (en) | Liquid crystal display and method of driving the same | |
| CN102270436B (en) | Driving method, driving module and liquid crystal display device | |
| KR20070059340A (en) | Liquid crystal display | |
| KR20080006037A (en) | Shift register, display device including shift register, driving apparatus of shift register and display device | |
| CN101221337A (en) | Array substrate of LCD device and its driving method | |
| CN102221762B (en) | Liquid crystal display device and method of driving the same | |
| CN104134418A (en) | Display device for low speed drive and method for driving the same | |
| CN100359555C (en) | Driving apparatus for liquid crystal display | |
| CN101866087B (en) | Sub-pixel structure and liquid crystal display panel | |
| US8624814B2 (en) | Liquid crystal display and inversion driving method thereof | |
| CN101620353B (en) | Liquid crystal display device and driving method of the same | |
| CN101556770B (en) | Method and device for driving liquid crystal display to lower power supply noises | |
| US20070146288A1 (en) | Liquid crystal display device and method of driving the same | |
| CN101794557A (en) | Driving method used for liquid crystal display device and relevant device thereof | |
| CN102436792A (en) | Driving method applied to display panel | |
| CN101963728A (en) | Liquid crystal display | |
| CN103439809B (en) | Display panel and driving method thereof | |
| CN102054458B (en) | Driving method of liquid crystal display device and related device thereof | |
| CN102929019B (en) | A kind of gate drive apparatus, display panel and display device | |
| CN100516993C (en) | LCD panel and its driving circuit and driving method | |
| CN103295539A (en) | 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20130410 |