CN103680440B - Drive method and device for decreasing consumed power of liquid crystal display - Google Patents
Drive method and device for decreasing consumed power of liquid crystal display Download PDFInfo
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Abstract
The invention discloses a drive method. The method includes: sequentially receiving first data, second data, third data and fourth data; judging whether or not the second data is the same as the first data and the fourth data is the same as the third data; when the second data is the same as the first data and the fourth data is the same as the third data, generating a control signal not including a horizontal start signal for a data line drive circuit; when the second data is the same as the first data and the fourth data is the same as the third data, generating a drive signal not including drive data; controlling the data line drive circuit to selectively read the drive data according to the control signal and the drive signal.
Description
The application is is on June 23rd, 2008, Application No. 200810110255.8 applying date, invention entitled " be used for
The divisional application of the application for a patent for invention of the driving method of reducing power consumption of liquid crystal display and relevant apparatus ".
Technical field
The present invention relates to a kind of driving method for liquid crystal display and relevant apparatus, more particularly, to one kind are used for reducing
The driving method of the power consumption of liquid crystal display and electromagnetic interference and relevant apparatus.
Background technology
Due to liquid crystal display (liquid crystal display), to have Low emissivity, small volume and low power consuming etc. excellent
Point, has gradually replaced traditional cathode ray tube display (cathode ray tube display), and has been widely used
Notebook computer (notebook computer), personal digital assistant (personal digital assistant, pda),
On flat-surface television, or the information products such as mobile phone.
The drive system of liquid crystal display is typically driven by time schedule controller, a data line drive circuit and scan line
Galvanic electricity road is constituted.Time schedule controller is used for producing driving data and the liquid crystal of liquid crystal panel according to the image data being received
Required clock signal and control signal during panel running.Data line drive circuit and scan line drive circuit are then respectively according to drive
Dynamic data, control signal and clock signal carry out execution logic computing, to produce data wire (data line) and scan line (scan
Line drive signal).
For example, clock signal produced by time schedule controller includes horizontal clock signal (cph) and vertical clock
Signal (cpv)；And control signal then includes horizontal initial signal (sth), vertical initial signal (stv), data loading signal
(ld), polarity control signal (pol) and output enable signal (oe) etc., and they are known to those skilled in the art,
This does not repeat.Additionally, data line drive circuit and scan line drive circuit can be respectively by multiple source electrode drivers and multiple grids
Driver is formed.Every one source driver or gate drivers can be respectively intended to drive a plurality of data lines or scan line, and liquid
Depending on the quantity of the source electrode driver needed for crystal display and gate drivers is then according to resolution.
In known technology, data line drive circuit would generally be exported and swept corresponding to same in units of scan line by column
Retouch the data wire drive signal of line, to drive display panels to show the image data of a picture.In this case, data wire
Drive circuit sequentially need to read the driving data that time schedule controller is exported, to produce phase according to control signal and clock signal
Corresponding data wire drive signal.
Refer to Fig. 1, Fig. 1 is the driver' s timing figure of known liquid crystal display.T_data represents that time schedule controller is exported
Driving data, cph represents horizontal clock signal, and sth represents horizontal initial signal, and ld represents that data is loaded into signal, and pol represents pole
Property control signal, and line_n then represents the data wire drive signal of a data wire in liquid crystal display.Wherein, horizontal clock letter
Number cph is used for providing reference clock during data drive circuit running；Horizontal initial signal sth is used for trigger data line and drives electricity
Road, to receive the driving data that time schedule controller is exported；Data is loaded into signal ld and is used for the defeated of control data line drive signal
Go out；And polarity control signal pol is then used for the polarity of control data line drive circuit institute output data line drive signal.Additionally,
For convenience of explanation, driving data t_data that time schedule controller is exported is presented in block mode, and each block represents corresponding
In the driving data of same scan line, and blank block is then used for representing blanking signal (blanking), to separate adjacent drive
Dynamic data.
For (n-1) article scan line, known technology produces the level corresponding to (n-1) article scan line first
Initial signal sth, receives corresponding driving data block with control data line drive circuit.Then, known technology generation is right
The data of Ying Yu (n-1) bar scan line is loaded into signal ld, with control data line drive circuit output data line drive signal,
And the polarity of polarization control signal pol change data line drive signal.For nth bar and (n+1) article scan line,
Similar operation can repeatedly be carried out.
However, when two image datas that time schedule controller institute received in sequence arrives are identical, such as corresponding to (n-1)
Bar and the image data of nth bar scan line, known technology still can repeat to produce phase according to the two same image data being received
Corresponding driving data, clock signal and control signal, to drive (n-1) article and nth bar scan line respectively.However, so
Way will lead to unnecessary power consumption.Additionally, with the raising of liquid crystal display resolution, unnecessary signal transmission is also held
It is easily caused serious electromagnetic interference problem.
Content of the invention
Therefore, the present invention is to provide a kind of driving method for a reducing power consumption of liquid crystal display and correlation
Device.
The invention discloses a kind of driving method for a reducing power consumption of liquid crystal display, include received in sequence
One first data and one second data, and received in sequence 1 the 3rd data and one the 4th data；Judge this second data whether with
This first data is identical and whether the 4th data is identical with the 3rd data；Identical with this first data in this second data
And the 4th data identical with the 3rd data when, produce a control signal, this control signal do not include for a data
One first level initial signal of line drive circuit and one second horizontal initial signal；In this second data and this first data
Identical and when the 4th data is identical with the 3rd data, produce a drive signal, this drive signal do not include corresponding to
One first source electrode driver and the driving data corresponding to one second source electrode driver；And should according to the control of this control signal
Data line drive circuit optionally reads this driving data, does not wherein include this first level in this control signal and initiates letter
Number and control during this second horizontal initial signal this data line drive circuit not read corresponding to the first source electrode driver and right
Should be in this driving data of this second source electrode driver；Wherein this first data and this second data are this data line drive circuits
This first source electrode driver image data, it corresponds respectively to two adjacent scanning lines, the 3rd data and the 4th data
It is the image data of this second source electrode driver of this data line drive circuit, it corresponds respectively to this two adjacent scanning lines, should
First level initial signal corresponds to this first source electrode driver, and this second horizontal initial signal corresponds to this second source electrode
Driver.
The invention also discloses a kind of driving means reducing power consumption for a liquid crystal display, include a data
Line drive circuit, for according to a control signal and a driving data, producing a data wire drive signal, to drive this liquid crystal
Show device；And time schedule controller, it is coupled to this data line drive circuit, for producing this control signal and this driving data,
Include a receiving terminal, correspond to one first data and one second data of one first source electrode driver for received in sequence, and
Received in sequence corresponds to one the 3rd data and one the 4th data of one second source electrode driver；One judging unit, is coupled to this and connects
Receiving end, for judge whether this second data identical with this first data and the 4th data whether with the 3rd data phase
With；One driving data generation unit, is coupled to this judging unit, and for producing driving data, it corresponds respectively to this first number
According to, this second data, the 3rd data and the 4th data, and when this second data is identical with this first data, do not produce
Raw this driving data corresponding to this second data, and when the 4th data is identical with the 3rd data, do not produce correspondence
This driving data in the 4th data；And a control signal generation unit, it is coupled to this judging unit, for producing and setting
This control signal fixed, makes this control signal optionally include a first level initial signal and the initial letter of one second level
Number, wherein when this second data is identical with this first data this control signal do not include this first level initial signal and
When the 4th data is identical with the 3rd data, this control signal does not include this second horizontal initial signal；Wherein this
When two data are identical with this first data, this data line drive circuit is controlled to not read this drive corresponding to this second data
Dynamic data, and when the 4th data is identical with the 3rd data, this data line drive circuit is controlled to not read correspondence
This driving data in the 4th data；Wherein this first data and this second data be this data line drive circuit this first
The image data of source electrode driver, it corresponds respectively to two adjacent scanning lines, and the 3rd data and the 4th data are this data
The image data of this second source electrode driver of line drive circuit, it corresponds respectively to this two adjacent scanning lines, this first level
Initial signal corresponds to this first source electrode driver, and this second horizontal initial signal corresponds to this second source electrode driver.
The invention also discloses a kind of driving method for a reducing power consumption of liquid crystal display, include and sequentially connect
Receive the image data of one first scan line and the image data of one second scan line, wherein the image data of this first scan line and
In the image data of this second scan line, every pen data includes the corresponding data of plurality of sources driver；A plurality of to this
Each of source electrode driver source electrode driver, compares the image data of this first scan line and the image number of this second scan line
According in an identical source electrode driver corresponding data, to judge this plurality of source drive in the image data of this second scan line
In device at least one source driver this corresponding data whether with this plurality of source electrode in the image data of this first scan line
In driver, this corresponding data of this at least one source driver is identical；This plural number in the image data of this second scan line
This plural number at least in this corresponding data of one source driver and the image data of this first scan line in individual source electrode driver
When this corresponding data of this at least one source driver is identical in individual source electrode driver, produces a control signal and and drive letter
Number, this control signal does not include at least one horizontal initial signal corresponding to this at least one source driver, this drive signal
Do not include the driving data corresponding to this at least one source driver；And this at least one source is controlled according to this control signal
Driver optionally reads this driving data, does not wherein include corresponding to this at least one source drive in this control signal
This at least one source driver is controlled not read corresponding to this at least one source drive during this at least horizontal initial signal of device
This driving data of device.
The invention also discloses a kind of driving means reducing power consumption for a liquid crystal display, include a data
Line drive circuit, includes plurality of sources driver, for according to a control signal and a driving data, producing a data wire
Drive signal, to drive this liquid crystal display；And time schedule controller, it is coupled to this plurality of sources driver, for producing
This control signal raw and this driving data, include a receiving terminal, the image data for received in sequence one first scan line and
Every in the image data of one second scan line, the wherein image data of the image data of this first scan line and this second scan line
Pen data includes the corresponding data of this plurality of sources driver；One judging unit, is coupled to this receiving terminal, for comparing
The corresponding data of an identical source electrode driver in the image data of the image data of this first scan line and this second scan line, with
Judge this corresponding number of at least one source driver in this plurality of sources driver in the image data of this second scan line
This phase with this at least one source driver in this plurality of sources driver in the image data of this first scan line according to whether
The data answered is identical；One driving data generation unit, is coupled to this judging unit, for the image data in this second scan line
In in this plurality of sources driver at least this corresponding data of one source driver and this first scan line image data
In in this plurality of sources driver at least one source driver this corresponding data identical when, produce without corresponding to should
One drive signal of an at least driving data of one source driver；And a control signal generation unit, it is coupled to this judgement
Unit, for this phase of at least one source driver in this plurality of sources driver in the image data of this second scan line
This phase of at least one source driver in the data answered and this plurality of sources driver in the image data of this first scan line
When the data answered is identical, produce the control not included corresponding to this at least at least one horizontal initial signal of one source driver
Signal processed, it is used for this at least one source driver, to control this at least one source driver according to this control signal, selectivity
Ground reads this driving data, does not wherein include this at least one water corresponding to this at least one source driver in this control signal
During flat initial signal, this at least one source driver does not read this driving data corresponding to this at least one source driver.
Brief description
Fig. 1 is the driver' s timing figure of known liquid crystal display.
Fig. 2 is used for for the present invention reducing the schematic diagram of a driving flow process of power consumption in liquid crystal display.
Fig. 3 is used for, for the present invention, the embodiment schematic diagram that liquid crystal display saves a drive system of power consumption.
Fig. 4 is the driver' s timing figure of the present invention one liquid crystal display.
Fig. 5 is the schematic diagram of a data line drive circuit.
The driver' s timing figure of a liquid crystal display for present invention application Fig. 5 data line drive circuit for Fig. 6～8.
Fig. 9～11 are respectively the schematic diagram of the data line drive circuit function mode corresponding to Fig. 6～8 driver' s timing.
Wherein, description of reference numerals is as follows:
T_data driving data
Cph horizontal clock signal
The horizontal initial signal of sth
Ld data is loaded into signal
Pol polarity control signal
Line_n, drv data wire drive signal
20 driving flow processs
200th, 210,220,230,240,250 step
30 drive systems
31st, 50 data line drive circuit
32 time schedule controllers
Ctrl control signal
321 receiving terminals
322 judging units
323 control signal generation units
324 driving data generation units
325 dock signal generation unit
Cph horizontal clock signal
401st, 404,405,407 pulse
402nd, 403,406,601,701,702,801,802 block
Sd1～sd5 source electrode driver
Specific embodiment
Refer to Fig. 2, Fig. 2 is used for for the present invention reducing the signal of a driving flow process 20 of power consumption in liquid crystal display
Figure.Flow process 20 is driven to be applied in the time schedule controller of liquid crystal display, it includes the following step:
Step 200: start.
Step 210: received in sequence one first image data and one second image data.
Step 220: judge whether the second image data is identical with the first image data.In the second image data and the first shadow
When picture data is identical, carry out step 230；When the second image data and the first image data differ, carry out step 240.
Step 230: control a data line drive circuit not read the driving data corresponding to the second image data.
Step 240: control data line drive circuit reads the driving data corresponding to the second image data.
Step 250: terminate.
According to driving flow process 20, whether the present invention, after receiving the second image data, judges the second image data with the
One image data is identical.When the second image data is identical with the first image data, the present invention controls a number of liquid crystal display
Do not read the driving data corresponding to the second image data according to line drive circuit.It is preferred that the present invention is in the second image data
When identical with the first image data, by the horizontal initial signal (sth) not producing data line drive circuit, with control data
Line drive circuit does not read the driving data corresponding to the second image data.
Consequently, it is possible to time schedule controller institute received in sequence two image data phases simultaneously as data drive circuit
The horizontal initial signal corresponding to the second image data will not be received, therefore data drive circuit will not be to the second image data
Driving data received, and driving data that can directly according to the first image data, output is corresponding to the second image data
Data wire drive signal, to save power consumption.
Additionally, when the second image data with the first image data phase simultaneously as data drive circuit will not be to the second shadow
Driving data as data is received, and therefore the present invention can further stop producing the drive corresponding to the second image data
Dynamic data and clock control signal, the data volume being produced needed for time schedule controller with reducing and transmitting, and then electricity is greatly reduced
The problem of magnetic disturbance.
Certainly, when the second image data and the first image data differ, the present invention drives flow process 20 except controlling number
Outside reading the driving data corresponding to the second image data according to line drive circuit, additionally comprise generation corresponding to the second image data
Driving data, the step such as control signal and clock signal, it is known to those skilled in the art, will not be described here.
Please continue to refer to Fig. 3, Fig. 3 is used for, for the present invention, the reality that liquid crystal display saves a drive system 30 of power consumption
Apply illustration to be intended to.Drive system 30 is used for realizing driving flow process 20, to reduce the power consumption of liquid crystal display.Drive system 30
Include a data line drive circuit 31 and time schedule controller 32.Data line drive circuit 31 is used for according to a control signal
Ctrl and driving data t_data, produce a data wire drive signal drv, to drive liquid crystal display.Time schedule controller 32
It is coupled to data line drive circuit 31, it includes a receiving terminal 321, a judging unit 322 and a control signal and produces list
Unit 323.Receiving terminal 321 is used for received in sequence one first image data and one second image data.Judging unit 322 is coupled to and connects
Receiving end 321, for judging whether the second image data is identical with the first image data.Control signal generation unit 323 is coupled to
Judging unit 322, for, when the second image data is identical with the first image data, producing and setup control signal ctrl, with
Control data line drive circuit 31 does not read the driving data corresponding to the second image data.
It is preferred that control signal ctrl produced by time schedule controller 32 is by horizontal initial signal (sth), vertically initial letter
Number (stv), data are loaded into signal (ld), polarity control signal (pol) and output and enable the signals such as signal (oe) composition.Work as sequential
When second image data of controller 32 received in sequence is identical with the first image data, produced by time schedule controller 32 of the present invention
Control signal ctrl will not comprise horizontal initial signal, not produce horizontal initial signal, with control data line drive circuit 31
Do not read the driving data corresponding to the second image data.
Consequently, it is possible to when two image data phases of 32 received in sequence of time schedule controller are simultaneously as data-driven is electric
Road 31 will not receive the horizontal initial signal corresponding to the second image data, and therefore data drive circuit 31 will not be to the second shadow
Driving data as data is received, and driving data that can directly according to the first image data, output is corresponding to the second shadow
As the data wire drive signal of data, to save power consumption.
Additionally, time schedule controller 32 has additionally comprised a driving data generation unit 324 and a dock signal generation unit
325.Driving data generation unit 324 and dock signal generation unit 325 are respectively coupled to judging unit 322, connect for basis
Image data and the judged result of judging unit 322 that receiving end 321 is received, produce driving data t_data and a horizontal clock
Signal cph.
When the second image data with the first image data phase simultaneously as data drive circuit 31 will not be to the second image number
According to driving data received, therefore driving data generation unit 324 and dock signal generation unit 325 can DIGEN further
It is judged that the judged result of unit 322, stop producing the driving data corresponding to the second image data and clock signal, to reduce
The required data volume producing and transmitting of time schedule controller 32, and then the problem of electromagnetic interference is greatly reduced.
It should be noted that above-mentioned first image data and the second image data can correspond to two in liquid crystal display
Same one source driver (source is corresponded in the image data of adjacent scanning lines, or two adjacent scan-line datas
Driver image data), and not limited to this.
For example, refer to Fig. 4, Fig. 4 is the driver' s timing figure of the present invention one liquid crystal display.T_data represents sequential
32 output driving data of controller, cph represents horizontal clock signal, and sth represents horizontal initial signal, and ld represents that data is loaded into
Signal, pol represents polarity control signal, and line_n then represents the data wire drive signal of a data wire in liquid crystal display.
For convenience of explanation, driving data t_data that time schedule controller 32 is exported is presented in block mode, and each block represents right
The driving data of Ying Yutong scan line, and blank block is then used for representing blanking signal (blanking), adjacent to separate
Driving data.As shown in figure 4, when time schedule controller 32 judges the received image data of nth bar scan line and (n-1)
When the image data of bar scan line is identical, horizontal initial signal (i.e. pulse 401) corresponding to nth bar scan line will not by when
Sequence controller 32 is produced.In this case, data line drive circuit 31 will not be swept to nth bar by horizontal start signal triggers
The driving data (i.e. block 402) retouching line is received, and driving data (i.e. area that can directly according to (n-1) article scan line
Block 403), corresponding data be loaded into signal (i.e. pulse 404) and polarity control signal (i.e. pulse 405), output is corresponding to n-th
The data wire drive signal of bar scan line, to save power consumption.Further, time schedule controller 32 can stop producing and correspond to
In driving data (i.e. block 402) and the corresponding clock signal of nth bar scan line, to reduce, time schedule controller 32 is required to be produced
Data volume that is raw and transmitting, and then the problem of electromagnetic interference is greatly reduced.
On the other hand, when the image data of (n+1) article scan line is differed with the image data of nth bar scan line,
The time schedule controller 32 then image data according to (n+1) article scan line, produce corresponding driving data (i.e. block 406) and
Horizontal initial signal (i.e. pulse 407), is driven with the data wire that control data line drive circuit 31 produces (n+1) article scan line
Signal.On the contrary, data line drive circuit 31 can continue the driving data according to (n-1) article scan line and corresponding data
It is loaded into signal, polarity driven signal, output is corresponding to the data wire drive signal of (n+1) article scan line.
Further, since data line drive circuit is typically made up of multiple source electrode drivers, therefore the present invention can also source
Driver is unit, decides whether to be driven the reception of data.Refer to Fig. 5, Fig. 5 is a data line drive circuit 50
Schematic diagram.Data line drive circuit 50 includes source electrode driver sd1～sd5, and each of which source electrode driver is used to drive
Corresponding plural data line.It is preferred that data line drive circuit 50 can carry out addressing in advance to every one source driver.Cause
This, control signal ctrl produced by time schedule controller 32, for example horizontal initial signal sth, (embedded) can be embedded and driving
The blanking area of dynamic data is transmitted, to save the arrangement space of circuit trace.
Refer to Fig. 6～8, Fig. 6～8 are the liquid crystal display of another embodiment of the present invention application data line drive circuit 50
Driver' s timing figure.Compared to Fig. 4, driving data t_data only represents the driving data of nth bar scan line, and each block represents
Corresponding to the driving data with one source driver, and horizontal initial signal sth is then embedded in the blanking signal area of driving data
It is transmitted in block.Refer to Fig. 6, in the case of general, in nth bar scan line, correspond to source electrode driver sd1～sd5
Image data when all differing with (n-1) article scan line, time schedule controller 32 can produce according to the image data being received
Corresponding to the driving data of source electrode driver sd1～sd5, and embed corresponding to source electrode driver sd1 in blanking signal block
Horizontal initial signal (i.e. block 601), with control data drive circuit 50 sequentially read corresponding to source electrode driver sd1～
The driving data of sd5.Consequently, it is possible to data drive circuit 50 can be loaded into signal ld and polarity inversion signal according to data further
Pol, produces corresponding data wire drive signal.In this case, the function mode of data drive circuit 50, as shown in Figure 9.
If on the contrary, corresponding to image data and (n-1) article scanning of some source electrode drivers in nth bar scan line
When line is identical, time schedule controller 32 in units of source electrode driver, can not carry out the transmission of identical driving data.For example,
Refer to Fig. 7, when time schedule controller 32 is judged to correspond to the image data of source electrode driver sd1 and sd4 in nth bar scan line
When identical with (n-1) article scan line, now, time schedule controller 32 is not required to produce corresponding to source electrode driver sd1's and sd4
Driving data, to save power consumption.In this case, time schedule controller 32 can be by corresponding to source electrode driver sd2, sd3
Horizontal initial signal and the horizontal initial signal (i.e. block 701 and 702) corresponding to source electrode driver sd5 are respectively embedded in driving
The driving data of source electrode driver sd2, sd3 and sd5 in data, is sequentially read in control data drive circuit 31.With regard to now
The function mode of data drive circuit 50, refer to Figure 10.
In other words, for source electrode driver sd1 and sd4, due to nth bar scan line and (n-1) article scan line
Driving data is identical, and therefore time schedule controller 32 is not required to produce the driving data of source electrode driver sd1 and sd4, and data-driven
Circuit 31 does not also need to receive corresponding driving data, to save power consumption.Finally, data drive circuit 50 still can basis
Data is loaded into signal ld and polarity inversion signal pol, produces corresponding data wire drive signal.
On the other hand, if corresponding to image data and (n-1) of source electrode driver sd3 and sd5 in nth bar scan line
When bar scan line is identical, its associated drives sequential is then as shown in Figure 8.Similarly, time schedule controller 32 is not required to produce corresponding to source
The driving data of driver sd3 and sd5, and can be by corresponding to the horizontal initial signal of source electrode driver sd1, sd2 and correspondence
Horizontal initial signal (i.e. block 801 and 802) in source electrode driver sd4 is respectively embedded in driving data, with control data
Drive circuit 31 sequentially reads in the driving data of source electrode driver sd1, sd2 and sd4.In this case, data drive circuit 50
Function mode, as shown in figure 11.
That is, the present invention can be decided whether to be driven the reception of data, or entered one in units of source electrode driver
Step stops producing corresponding driving data, to save power consumption.Note that above-described embodiment is only illustrating of the present invention
Bright, those skilled in the art are suitably modified when visual actual demand.For example the image data of nth bar scan line is divided
Become more small fragment or be divided into the modes such as r, g, b, to be compared with (n-1) article scan line.So corresponding change all belongs to this
The scope of invention.
In sum, the present invention is the control data when two image datas of time schedule controller institute received in sequence are identical
Line drive circuit does not read corresponding driving data, to save power consumption, and then reduces the problem of electromagnetic interference.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to the claims in the present invention with repair
Decorations, all should belong to the covering scope of the present invention.
Claims (25)
1. a kind of driving method for a reducing power consumption of liquid crystal display, includes:
Received in sequence one first data and one second data, and received in sequence 1 the 3rd data and one the 4th data；
Judge whether this second data is identical with this first data and whether the 4th data is identical with the 3rd data；
Identical with this first data and when the 4th data is identical with the 3rd data in this second data, produce one and control letter
Number, this control signal does not include and rises for a first level initial signal of a data line drive circuit and one second level
Beginning signal；
Identical with this first data and when the 4th data is identical with the 3rd data in this second data, produce one and drive letter
Number, this drive signal is without the driving number corresponding to one first source electrode driver and corresponding to one second source electrode driver
According to；And
This data line drive circuit is controlled optionally to read this driving data according to this control signal, wherein in this control signal
This data line drive circuit is controlled not read when not including this first level initial signal and this second horizontal initial signal
This driving data corresponding to the first source electrode driver and corresponding to this second source electrode driver；
Wherein this first data and this second data are the image datas of this first source electrode driver of this data line drive circuit,
It corresponds respectively to two adjacent scanning lines, and the 3rd data and the 4th data are this second source electrodes of this data line drive circuit
The image data of driver, it corresponds respectively to this two adjacent scanning lines, and this first level initial signal corresponds to this first source
Driver, and this second horizontal initial signal is corresponding to this second source electrode driver.
2. driving method as claimed in claim 1, wherein, when this second data is identical with this first data, this data wire
Drive circuit, according to the driving data corresponding to this first data, produces the data wire corresponding to this second data and drives letter
Number.
3. driving method as claimed in claim 2, wherein, this driving data corresponding to this first data is this liquid crystal display
The time schedule controller of device is produced.
4. driving method as claimed in claim 1, it additionally comprises:
When this second data is identical with this first data, do not produce the clock signal corresponding to this second data.
5. a kind of driving means reducing power consumption for a liquid crystal display, include:
One data line drive circuit, for according to a control signal and a driving data, producing a data wire drive signal, to drive
Move this liquid crystal display；And
Time schedule controller, is coupled to this data line drive circuit, for producing this control signal and this driving data, comprises
Have:
One receiving terminal, corresponds to one first data and one second data of one first source electrode driver for received in sequence, and according to
Sequence receives one the 3rd data and one the 4th data corresponding to one second source electrode driver；
One judging unit, is coupled to this receiving terminal, for judge this second data whether identical with this first data and this
Whether four data are identical with the 3rd data；
One driving data generation unit, is coupled to this judging unit, and for producing driving data, it corresponds respectively to this first number
According to, this second data, the 3rd data and the 4th data, and when this second data is identical with this first data, do not produce
Raw this driving data corresponding to this second data, and when the 4th data is identical with the 3rd data, do not produce correspondence
This driving data in the 4th data；And
One control signal generation unit, is coupled to this judging unit, for producing and setting this control signal, makes this control signal
Optionally include a first level initial signal and one second horizontal initial signal, wherein this second data with this first
When data is identical, this control signal does not include this first level initial signal and in the 4th data and the 3rd data phase
This control signal does not include this second horizontal initial signal simultaneously；
Wherein when this second data is identical with this first data, this data line drive circuit is controlled to not read corresponding to this
This driving data of second data, and when the 4th data is identical with the 3rd data, this data line drive circuit is controlled
System is not to read this driving data corresponding to the 4th data；
Wherein this first data and this second data are the image datas of this first source electrode driver of this data line drive circuit,
It corresponds respectively to two adjacent scanning lines, and the 3rd data and the 4th data are this second source electrodes of this data line drive circuit
The image data of driver, it corresponds respectively to this two adjacent scanning lines, and this first level initial signal corresponds to this first source
Driver, and this second horizontal initial signal is corresponding to this second source electrode driver.
6. driving means as claimed in claim 5, wherein, when this second data is identical with this first data, this data wire
Drive circuit, according to the driving data corresponding to this first data, produces the data wire corresponding to this second data and drives letter
Number.
7. driving means as claimed in claim 6, wherein, this driving data corresponding to this first data is this sequencing contro
Device is produced, and is temporarily stored in this data line drive circuit.
8. driving means as claimed in claim 5, wherein, when this second data is differed with this first data, this control
Signal generation unit produces this control signal, to control this first source electrode driver to read this driving corresponding to this second data
Data.
9. driving means as claimed in claim 5, wherein, this time schedule controller additionally comprises:
One dock signal generation unit, is coupled to this judging unit, for producing the clock signal corresponding to this first data
And the clock signal corresponding to this second data.
10. driving means as claimed in claim 9, wherein, when this second data is identical with this first data, this clock is believed
Number generation unit does not produce this clock signal corresponding to this second data.
A kind of 11. driving methods for a reducing power consumption of liquid crystal display, include:
The image data of received in sequence one first scan line and the image data of one second scan line, wherein this first scan line
In the image data of image data and this second scan line, every pen data includes the corresponding data of plurality of sources driver；
To each of this plurality of sources driver source electrode driver, compare the image data of this first scan line and this second
The corresponding data of an identical source electrode driver in the image data of scan line, so that judge should in the image data of this second scan line
This corresponding data whether image data with this first scan line of at least one source driver in plurality of sources driver
In in this plurality of sources driver this at least one source driver this corresponding data identical；
In this plurality of sources driver in the image data of this second scan line at least one source driver this is corresponding
Data in this plurality of sources driver in the image data of this first scan line this at least one source driver this is corresponding
Data identical when, produce a control signal and a drive signal, this control signal does not include corresponding to this at least one source electrode
At least one horizontal initial signal of driver, this drive signal does not include the driving corresponding to this at least one source driver
Data；And
Control this at least one source driver optionally to read this driving data according to this control signal, wherein believe in this control
Number do not include corresponding to this at least this at least horizontal initial signal of one source driver when control this at least one source electrode to drive
Dynamic device does not read this driving data corresponding to this at least one source driver.
12. driving methods as claimed in claim 11, wherein, the image data of this first scan line and this second scan line
Image data is the image data corresponding to two adjacent scanning lines in this liquid crystal display.
13. driving methods as claimed in claim 11, have additionally comprised:
This at least this corresponding data of one source driver and this first scan line in the image data of this second scan line
Image data in this at least one source driver this corresponding data identical when, according to the shadow corresponding to this first scan line
As this driving data of this at least this corresponding data of one source driver in data, produce a data wire drive signal, its
This corresponding data corresponding to this at least one source driver in the image data of this second scan line.
14. driving methods as claimed in claim 13, wherein, corresponding to this driving number of the image data of this first scan line
Produced according to the time schedule controller by this liquid crystal display.
15. driving methods as claimed in claim 11, have additionally comprised:
This at least this corresponding data of one source driver and this first scan line in the image data of this second scan line
Image data in this at least one source driver this corresponding data identical when, do not produce at least one clock signal, it is right
Should in the image data of this second scan line this at least one source driver this corresponding data.
16. driving methods as claimed in claim 11, wherein, arbitrary source drive in for this plurality of sources driver
When one horizontal initial signal of device is generated, this horizontal initial signal is embedded in this driving data of this source electrode driver.
A kind of 17. driving means reducing power consumption for a liquid crystal display, include:
One data line drive circuit, includes plurality of sources driver, for according to a control signal and a driving data, producing
A raw data wire drive signal, to drive this liquid crystal display；And
Time schedule controller, is coupled to this plurality of sources driver, for producing this control signal and this driving data, comprises
Have:
One receiving terminal, the image data for received in sequence one first scan line and the image data of one second scan line, wherein
In the image data of the image data of this first scan line and this second scan line, every pen data includes this plurality of source electrode and drives
The corresponding data of dynamic device；
One judging unit, is coupled to this receiving terminal, for comparing the image data of this first scan line and this second scan line
The corresponding data of an identical source electrode driver in image data, to judge this plurality of sources in the image data of this second scan line
In driver at least one source driver this corresponding data whether with this plural number in the image data of this first scan line
In individual source electrode driver, this corresponding data of this at least one source driver is identical；
One driving data generation unit, is coupled to this judging unit, for this plural number in the image data of this second scan line
This plural number at least in this corresponding data of one source driver and the image data of this first scan line in individual source electrode driver
When in individual source electrode driver, this corresponding data of at least one source driver is identical, produce without corresponding to this at least one source
One drive signal of one driving data of driver；And
One control signal generation unit, is coupled to this judging unit, for this plural number in the image data of this second scan line
This plural number at least in this corresponding data of one source driver and the image data of this first scan line in individual source electrode driver
When in individual source electrode driver, this corresponding data of at least one source driver is identical, produce do not include corresponding to this at least one
One control signal of at least one horizontal initial signal of source electrode driver, it is used for this at least one source driver, is somebody's turn to do with controlling
At least one source driver, according to this control signal, optionally reads this driving data, does not wherein comprise in this control signal
Have corresponding to this at least this at least horizontal initial signal of one source driver when this at least one source driver do not read right
Should be in this driving data of this at least one source driver.
18. driving means as claimed in claim 17, wherein, the image data of this first scan line and this second scan line
Image data corresponds to the image data of two adjacent scanning lines in this liquid crystal display.
19. driving means as claimed in claim 17, wherein, this at least one source electrode in the image data of this second scan line
This corresponding number of this corresponding data of driver and this at least one source driver in the image data of this first scan line
According to identical when, according to this at least this corresponding data of one source driver in the image data corresponding to this first scan line
Driving data, produces this data wire drive signal, and it corresponds to this at least one source electrode in the image data of this second scan line and drives
This corresponding data of dynamic device.
20. driving means as claimed in claim 17, wherein, corresponding to this driving number of the image data of this first scan line
Produced according to by this time schedule controller, and be temporarily stored in this data line drive circuit.
21. driving means as claimed in claim 17, wherein, this control signal generation unit is in the image of this second scan line
This this at least one source electrode at least in this corresponding data of one source driver and the image data of this first scan line in data
When this corresponding data of driver is different, produce this control signal, to control this data line drive circuit to read corresponding to this
This driving data of at least this corresponding data of one source driver in the image data of the second scan line.
22. driving means as claimed in claim 17, wherein, this at least one source electrode in the image data of this second scan line
This corresponding number of this corresponding data of driver and this at least one source driver in the image data of this first scan line
According to identical when, this driving data generation unit does not produce and drives corresponding to this at least one source electrode in the image data of this second scan line
This driving data of this corresponding data of dynamic device.
23. driving means as claimed in claim 17, wherein, this time schedule controller additionally comprises:
One dock signal generation unit, is coupled to this judging unit, and for producing a plurality of clock signals, it corresponds respectively to this
This corresponding number of this plurality of sources driver in the image data of the image data of the first scan line and this second scan line
According to.
24. driving means as claimed in claim 23, wherein, this at least one source electrode in the image data of this second scan line
This corresponding number of this corresponding data of driver and this at least one source driver in the image data of this first scan line
According to identical when, this dock signal generation unit does not produce at least one clock signal in this plurality of clock signal, its correspond to should
This corresponding data of this at least one source driver in this plurality of sources driver in the image data of the second scan line.
25. driving means as claimed in claim 17, wherein, when this control signal generation unit produces for this plurality of sources
In driver during a horizontal initial signal of arbitrary source electrode driver, this horizontal initial signal is embedded in this source electrode driver
This driving data in.
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| CN201310626296.3A CN103680440B (en) | 2008-06-23 | 2008-06-23 | Drive method and device for decreasing consumed power of liquid crystal display |
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| CN200810110255A CN101615383A (en) | 2008-06-23 | 2008-06-23 | Be used for driving method and relevant apparatus that LCD reduces consumed power |
| CN201310626296.3A CN103680440B (en) | 2008-06-23 | 2008-06-23 | Drive method and device for decreasing consumed power of liquid crystal display |
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| CN200810110255A Division CN101615383A (en) | 2008-06-23 | 2008-06-23 | Be used for driving method and relevant apparatus that LCD reduces consumed power |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1627354A (en) * | 2003-12-11 | 2005-06-15 | Lg.菲利浦Lcd株式会社 | Apparatus and method for driving liquid crystal display device |
| CN1941054A (en) * | 2005-09-26 | 2007-04-04 | 中华映管股份有限公司 | Driver and driving method for display panel |
| CN101004499A (en) * | 2006-01-18 | 2007-07-25 | 三菱电机株式会社 | Active matrix display device and semiconductor device for timing control thereof |
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| KR100864492B1 (en) * | 2002-05-03 | 2008-10-20 | 삼성전자주식회사 | Liquid crystal display device and a driving method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1627354A (en) * | 2003-12-11 | 2005-06-15 | Lg.菲利浦Lcd株式会社 | Apparatus and method for driving liquid crystal display device |
| CN1941054A (en) * | 2005-09-26 | 2007-04-04 | 中华映管股份有限公司 | Driver and driving method for display panel |
| CN101004499A (en) * | 2006-01-18 | 2007-07-25 | 三菱电机株式会社 | Active matrix display device and semiconductor device for timing control thereof |
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