CN105096873A - Image display method and liquid crystal display - Google Patents
Image display method and liquid crystal display Download PDFInfo
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- CN105096873A CN105096873A CN201510494396.4A CN201510494396A CN105096873A CN 105096873 A CN105096873 A CN 105096873A CN 201510494396 A CN201510494396 A CN 201510494396A CN 105096873 A CN105096873 A CN 105096873A
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Abstract
The invention discloses an image display method and a liquid crystal display. Before a to-be-displayed frame of image is displayed, in a condition in which polarity for each row of data does not need to be reversed when the to-be-displayed frame of image is displayed, data corresponding to each row in the to-be-displayed frame of image is compared with data of a corresponding row in a former frame of image; and in the to-be-displayed frame of image, rows whose data are different from corresponding rows in the former frame of already-displayed image serve as change rows, and the change rows only need to be refreshed. Thus, as long as two frames of images with kept polarity have rows of the same data, when the latter frame of image in the adjacent two frames of images is displayed, the same row does not need to be refreshed, power consumption for image refreshing can be effectively reduced, and the image display power consumption can be effectively reduced.
Description
Technical field
The present invention relates to display technique field, espespecially a kind of method for displaying image and liquid crystal display.
Background technology
Along with the development of display technique, power consumption is the key index of display product design always.At present in order to reduce power consumption, introduce panel Self-Refresh technology (PanelSelfRefresh, PSR) at display interface (DisplayPort, the DP) place of display device.Namely in the clock controller of display panel, remote framebuffer (RemoteFrameBuffer is increased, RFB), be used for storing the data of two field picture to be shown of outside source input, and before display two field picture to be shown, outside source needs first the data of the data of two field picture to be shown and previous frame image to be compared, if data are different, the data of two field picture to be shown are then delivered to remote framebuffer by outside source, display panel is when showing this two field picture to be shown, refresh according to the data of the two field picture to be shown received, if data are identical, outside source does not then need the data of two field picture to be shown to be delivered to remote framebuffer, display panel is when showing this two field picture to be shown, refresh according to the data identical with the data of this two field picture to be shown stored in remote framebuffer, thus the data volume that minimizing outside source sends to display panel, and then reduction power consumption.
As from the foregoing, the transmission that said method mainly reduces identical data by part reaches the object reducing power consumption, but in the above-mentioned methods, only have when the data of adjacent two two field pictures are identical, the effect reducing power consumption can be reached, therefore for Dynamic Announce, have little effect.
Therefore a kind of method providing power consumption of reduction display panel is newly the technical matters that those skilled in the art need solution badly.
Summary of the invention
Embodiments provide a kind of method for displaying image and liquid crystal display, for reducing power consumption during display panel display image.
Embodiments provide a kind of method for displaying image, comprising:
Judge the polarity of each row data that the n-th two field picture to be shown is corresponding, the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion; Wherein, n be not less than 1 positive integer;
If so, the polarity controlling each row data corresponding to described two field picture to be shown is reversed, and the full frame refreshing of each row data after reversing according to polarity, to show described two field picture to be shown;
Otherwise, every a line of more described two field picture to be shown and former frame have shown the data of image corresponding row, determine in two field picture to be shown, and data and described former frame have shown the not identical row of the data of image corresponding row, as change row, only refresh described change row.
Preferably, in the above-mentioned method for displaying image that the embodiment of the present invention provides, if the quantity of described change row is zero, then time sequence controller grid pole driving circuit makes the on-off element in each row pixel cut out, and control source electrode drive circuit does not export each row data, makes each row pixel keep each row data of the (n-1)th two field picture.
Preferably, in the above-mentioned method for displaying image that the embodiment of the present invention provides, determine in two field picture to be shown, data and described former frame have shown the not identical row of the data of image corresponding row, and as change row, it is capable only to refresh described change, is specially:
Time sequence controller grid pole driving circuit makes the on-off element of corresponding row pixel open, on-off element in other row pixels is closed, and control the data-signal that source electrode drive circuit only exports described change row, and control each row data that other row pixels keep the (n-1)th two field picture.
Preferably, in the above-mentioned method for displaying image that the embodiment of the present invention provides, judge the polarity of each row data that the n-th two field picture to be shown is corresponding, the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion, is specially:
For any one pixel on display device, search the 1st ~ the (n-1)th frame and shown the positive and negative of the polarity of described pixel corresponding to image;
If the quantity of the positive-negative polarity of described pixel is identical, then determine that the polarity of each row data that described two field picture to be shown is corresponding needs reversion, and this reversion is defined as first kind reversion;
If the quantity of the positive-negative polarity of described pixel is not identical, then judge that whether the polarity of pixel described in the n-th-M ~ the (n-1)th frame is identical, if, then determine that the polarity of described two field picture to be shown needs reversion, and described reversion is defined as Second Type reversion, otherwise, determine the type of the last time reversion before described two field picture to be shown;
If determine, the type of the last time reversion before described two field picture to be shown is first kind reversion or reversion did not occur, then every a line of more described two field picture to be shown and former frame have shown the data of image corresponding row; If comparative result is there is the identical row of data, then determine that the polarity of described two field picture to be shown each row data when showing does not need to reverse; If comparative result does not exist the identical row of data, then the polarity determined to compare the polarity of each row data that described two field picture to be shown is corresponding former frame shown each row data corresponding to image needs reversion, and this reversion is defined as the 3rd type reversion;
If determine, the type of the last time reversion before described two field picture to be shown is Second Type reversion or the reversion of the 3rd type, then the polarity determined to compare the polarity of each row data that described two field picture to be shown is corresponding former frame shown each row data corresponding to image does not need reversion; Wherein M is the integer of 1 ~ 16.
Preferably, in the above-mentioned method for displaying image that the embodiment of the present invention provides, search the 1st ~ the (n-1)th frame and shown the positive and negative of the polarity of described pixel corresponding to image, be specially:
The polarity of the described pixel of acquisition record is positive frame number and polarity is negative frame number, the polarity of described pixel determining to record is positive frame number and polarity is negative frame number, if the polarity of described pixel of record is positive frame number, to equal polarity be negative frame number, then determine that 1 ~ n-1 frame has shown the quantity of the positive-negative polarity of described pixel corresponding to image identical;
The polarity of described pixel determining to record is positive frame number and polarity is negative frame number, is specially:
Determine that the (n-1)th frame has shown the polarity of described pixel corresponding to image, if the polarity that the (n-1)th frame has shown described pixel corresponding to image is just, be then that positive frame number adds 1 by the polarity of described pixel of record, if the polarity that the (n-1)th frame has shown described pixel corresponding to image is negative, be then that negative frame number adds 1 by the polarity of described pixel of record, the initial value of the polarity wherein recording described pixel to be the initial value of positive frame number and the polarity of described pixel be negative frame number is 0.
Correspondingly, the embodiment of the present invention additionally provides a kind of liquid crystal display, comprising: control module, source electrode drive circuit and gate driver circuit;
Described control module is for judging the polarity of each row data that the n-th two field picture to be shown is corresponding, and the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion;
When determining that the polarity of each row data that the n-th two field picture is corresponding needs reversion, the polarity of described control module also for being controlled each row data corresponding to described two field picture to be shown by described source electrode drive circuit is reversed; Described control module also carries out full frame refreshing, to show described two field picture to be shown for each row Data Control source electrode drive circuit after reversing according to polarity and gate driver circuit;
When determining that the polarity of each row data that the n-th two field picture is corresponding does not need reversion, described control module has also shown the data of image corresponding row for every a line of more described two field picture to be shown and former frame, determine in two field picture to be shown, data and described former frame have shown the not identical row of the data of image corresponding row, as change row, by controlling described source electrode drive circuit and described gate driver circuit, only to refresh described change capable.
Preferably, in the above-mentioned liquid crystal display that the embodiment of the present invention provides, described control module also for, when the quantity of described change row is zero, by time sequence controller grid pole driving circuit, the on-off element in each row pixel is closed, and control source electrode drive circuit does not export each row data, makes each row pixel keep each row data of the (n-1)th two field picture.
Preferably, in the above-mentioned liquid crystal display that the embodiment of the present invention provides, described control module is also for when the quantity determining to change row is non-vanishing, by time sequence controller grid pole driving circuit, the on-off element of corresponding row pixel is opened, on-off element in other row pixels is closed, and control the data-signal that source electrode drive circuit exports described change row, and control each row data that other row pixels keep the (n-1)th two field picture.
Preferably, in the above-mentioned liquid crystal display that the embodiment of the present invention provides, described control module specifically for: for any one pixel on display device, search the 1st ~ the (n-1)th frame and shown the positive and negative of the polarity of described pixel corresponding to image; If the quantity of the positive-negative polarity of described pixel is identical, then determine the polarity of each row data that described two field picture to be shown is corresponding, the polarity that former frame of comparing has shown each row data corresponding to image needs reversion, and described reversion is defined as first kind reversion; If the quantity of the positive-negative polarity of described pixel is not identical, then judge that whether the polarity of pixel described in the n-th-M ~ the (n-1)th frame is identical, if, then determine that the polarity of described two field picture to be shown needs reversion, and described reversion is defined as Second Type reversion, otherwise, determine the type of the last time reversion before described two field picture to be shown; If determine, the type of the last time reversion before described two field picture to be shown is first kind reversion or reversion did not occur, then every a line of more described two field picture to be shown and former frame have shown the data of image corresponding row; If comparative result is there is the identical row of data, then determine that the polarity of described two field picture to be shown each row data when showing does not need to reverse; If comparative result does not exist the identical row of data, then the polarity determined to compare the polarity of each row data that described two field picture to be shown is corresponding former frame shown each row data corresponding to image needs reversion, and this reversion is defined as the 3rd type reversion; If determine, the type of the last time reversion before described two field picture to be shown is Second Type reversion or the reversion of the 3rd type, then the polarity determined to compare the polarity of each row data that described two field picture to be shown is corresponding former frame shown each row data corresponding to image does not need reversion; Wherein M is the integer of 1 ~ 16.
Preferably, in the above-mentioned liquid crystal display that the embodiment of the present invention provides, described control module is integrated on described time schedule controller.
A kind of method for displaying image that the embodiment of the present invention provides and liquid crystal display, judge the polarity of each row data that the n-th two field picture to be shown is corresponding, and the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion; If so, the polarity controlling each row data corresponding to two field picture to be shown is reversed, and the full frame refreshing of each row data after reversing according to polarity, to show two field picture to be shown; If not, every a line of two field picture more to be shown and former frame have shown the data of image corresponding row, determine in two field picture to be shown, and data and former frame have shown the not identical row of the data of image corresponding row, as change row, only refresh change row.As long as like this when two two field pictures that the polarity of corresponding row data is identical exist the row of identical data, when showing the rear two field picture in these adjacent two two field pictures, the row identical for data refreshes with regard to not needing, thus effectively can reduce the power consumption of refreshed image, and then effectively can reduce image display power consumption.Therefore compared to existing technology, even have partial row identical in adjacent two two field pictures of above-mentioned method for displaying image, also the effect reducing power consumption can be played, and utilize reduction refresh data amount to reach the object of reduction power consumption with reach the object of reduction in prior art by reducing transmitted data amount compared with in above-mentioned method for displaying image, the degree reducing the reduction power consumption that refresh data amount reaches is larger.
Accompanying drawing explanation
The process flow diagram of the method for displaying image that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 for the embodiment of the present invention provide according to preset regulation confirm two field picture to be shown show time polarity the need of reversion process flow diagram;
One of schematic diagram of the method for displaying image that Fig. 3 a provides for the embodiment of the present invention;
Fig. 3 b is the sequential control figure that Fig. 3 a is corresponding;
The schematic diagram two of the method for displaying image that Fig. 4 a provides for the embodiment of the present invention;
Fig. 4 b is the sequential control figure that Fig. 4 a is corresponding;
The structural representation of the liquid crystal display that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the method for displaying image provide the embodiment of the present invention and the embodiment of liquid crystal display are described in detail.
A kind of method for displaying image that the embodiment of the present invention provides, as shown in Figure 1, can comprise the following steps:
S101, judge the polarity of each row data that the n-th two field picture to be shown is corresponding, the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion.
If desired then perform step S102, if do not need, perform step S103.
S102, the polarity controlling each row data corresponding to two field picture to be shown are reversed, and the full frame refreshing of each row data after reversing according to polarity, to show two field picture to be shown.
Every a line of S103, two field picture more to be shown and former frame have shown the data of image corresponding row, determine in two field picture to be shown, and data and former frame have shown the not identical row of the data of image corresponding row, as change row, only refresh change row.
The above-mentioned method for displaying image that the embodiment of the present invention provides, judges the polarity of each row data that the n-th two field picture to be shown is corresponding, and the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion; If so, the polarity controlling each row data corresponding to two field picture to be shown is reversed, and the full frame refreshing of each row data after reversing according to polarity, to show two field picture to be shown; If not, every a line of two field picture more to be shown and former frame have shown the data of image corresponding row, determine in two field picture to be shown, and data and former frame have shown the not identical row of the data of image corresponding row, as change row, only refresh change row.As long as like this when two two field pictures that the polarity of corresponding row data is identical exist the row of identical data, when showing the rear two field picture in these adjacent two two field pictures, the row identical for data refreshes with regard to not needing, thus effectively can reduce the power consumption of refreshed image, and then effectively can reduce image display power consumption.
Therefore compared to existing technology, even have partial row identical in adjacent two two field pictures of above-mentioned method for displaying image, also the effect reducing power consumption can be played, and utilize reduction refresh data amount to reach the object of reduction power consumption with reach the object of reduction in prior art by reducing transmitted data amount compared with in above-mentioned method for displaying image, the degree reducing the reduction power consumption that refresh data amount reaches is larger.
In the above-mentioned method for displaying image that the embodiment of the present invention provides, if the quantity of change row is zero, namely current frame image is identical with the data of previous frame image, then keep the data of previous frame image without the need to refresh data current frame image.
Concrete, time sequence controller grid pole driving circuit makes the on-off element in each row pixel cut out, and control source electrode drive circuit does not export each row data, makes each row pixel keep each row data of the (n-1)th two field picture.Like this, because source electrode drive circuit and gate driver circuit all do not export data, when saving because exporting data, source electrode drive circuit and the power consumption required for gate driver circuit, also just effectively reduce the power consumption of image display.Although and a rear two field picture controls source electrode drive circuit when showing and gate driver circuit does not all export data, due to each row data making each row pixel keep the (n-1)th two field picture, therefore by ensureing that this two field picture can normally show.
Preferably, in the above-mentioned method for displaying image that the embodiment of the present invention provides, determine in two field picture to be shown, data and former frame have shown the not identical row of the data of image corresponding row, as change row, only refresh change row, are specially:
Time sequence controller grid pole driving circuit makes the on-off element of corresponding row pixel open, on-off element in other row pixels is closed, and control the data-signal that source electrode drive circuit only exports described change row, and control each row data that other row pixels keep the (n-1)th two field picture.
Preferably, in the above-mentioned method for displaying image that the embodiment of the present invention provides, step S101 judges the polarity of each row data that the n-th two field picture to be shown is corresponding, and the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion, as shown in Figure 2, be specially:
S201, for any one pixel on display device, search the 1st ~ the (n-1)th frame and shown the positive and negative of the polarity of this pixel corresponding to image.Wherein, n be not less than 1 positive integer.
If the quantity of the positive-negative polarity of this pixel is identical, perform step S202, then perform step S203 if not.
S202, determine the polarity of two field picture to be shown need reversion, and this reversion is defined as the first kind reversion.
It should be noted that, the reversion that first kind reversion is performed under being the condition when the quantity of the positive-negative polarity having shown this pixel corresponding to image when the 1st ~ the (n-1)th frame is identical determined according to step S201.
If the quantity of the positive-negative polarity of this pixel of S203 is not identical, then judge that whether the n-th-M is identical to the polarity of (n-1)th this pixel of frame; Wherein M is the integer of 1 ~ 16.
Then step S204 is performed, if when not identical, perform step S205 when identical.
S204, then determine the polarity of two field picture to be shown need reversion, and reversion is defined as Second Type reversion.
It should be noted that, the reversion that Second Type reversion is performed under being the condition when the quantity of the positive-negative polarity when this pixel is identical determined according to step S203.
Whether S205, the type of the last time reversion determined before two field picture to be shown are first kind reversion or whether also reversion did not occur.
It should be noted that, determine that the type of the last time reversion before two field picture to be shown refers to that the last time reversion before two field picture to be shown performs under what conditions here.
If be first kind reversion or reversion did not also occur and then perform step 206, be Second Type reversion or the reversion of the 3rd type if not, then perform step S207.
S206, the data corresponding to every a line of two field picture to be shown and the data corresponding to previous frame image corresponding row to be compared, be confirmed whether to there is the identical row of data.
If comparative result is there is the identical row of data, perform step S207, if comparative result is there is not the identical row of data, perform step S208.
S207, the polarity determined to compare the polarity of each row data that two field picture to be shown is corresponding former frame shown each row data corresponding to image do not need reversion.
S208, the polarity determined to compare the polarity of each row data that two field picture to be shown is corresponding former frame shown each row data corresponding to image need reversion, and this reversion are defined as the 3rd type reversion.
In above-mentioned method for displaying image, the most important condition that the polarity of each row data that two field picture to be shown is corresponding occurs to reverse to ensure with any one pixel, the positive and negative quantity that 1st ~ the (n-1)th frame has shown the polarity of this pixel corresponding to image is identical, in order to ensure that the time that liquid crystal is in positive bias and negative bias is identical, thus avoid longlyer causing image retention problem because liquid crystal is in time of wherein a kind of bias voltage.Next is the frame number kept when the polarity of this pixel when reaching M frame, and during next frame image, the polarity of this pixel must be reversed, and this continues to be in the overlong time of wherein a kind of bias state in order to avoid liquid crystal and destroys the performance of liquid crystal.Finally requirement is, when above-mentioned two kinds of conditions all do not meet, the type of reversing when the last time of this pixel be the first inversion-type or also there is not reversion time, as long as when the data corresponding to every a line of two field picture to be shown are compared with the data corresponding to previous frame image corresponding row, there is not the identical row of data and just determine that the polarity of two field picture to be shown liquid crystal when showing needs to reverse.
In the above-mentioned method for displaying image that the embodiment of the present invention provides, the polarity determining pixel is compared according to the data of each two field picture and the data of the image of its front frame, the polarity of this pixel corresponding with each two field picture in prior art all needs compared with reversion, is also to reach the object reducing power consumption.If this is because the polarity of the pixel of adjacent two two field pictures needs reversion, so from the change of data voltage of a two field picture after the data of previous frame image become be very large, if but the polarity of the pixel of adjacent two two field pictures does not need reversion, after so becoming from the data of previous frame image, the change of the data voltage of a two field picture is relatively little, therefore the reversion of the polarity of such determined pixel, farthest can reduce the power consumption increase because reversal of poles causes.
Further, in the above-mentioned method for displaying image that the embodiment of the present invention provides, for arbitrary pixel, search the 1st ~ the (n-1)th frame and shown the positive and negative of the polarity of this pixel corresponding to image, be specially:
The polarity of this pixel of acquisition record is positive frame number and polarity is negative frame number, the polarity of this pixel determining to record is positive frame number and polarity is negative frame number, then determine that the 1st ~ the (n-1)th frame has shown the quantity of the positive-negative polarity of this pixel corresponding to image identical;
The polarity of this pixel determining to record is positive frame number and polarity is negative frame number, is specially:
Before the n-th two field picture that display is to be shown, determine that the (n-1)th frame has shown the polarity of this pixel corresponding to image, if the polarity that the (n-1)th frame has shown this pixel corresponding to image is just, be then that positive frame number adds 1 by the polarity of this pixel of record, if the polarity that the (n-1)th frame has shown this pixel corresponding to image is negative, be then that negative frame number adds 1 by the polarity of this pixel of record, the initial value of the polarity wherein recording this pixel to be the initial value of positive frame number and the polarity of this pixel be negative frame number is 0.
Further, in the above-mentioned method for displaying image that the embodiment of the present invention provides, before judging, whether the polarity of this pixel of continuous N frame is identical, is specially:
Obtain the frame number that the polarity of this pixel of record is consecutive identical, if the consecutive identical frame number of the polarity of this pixel of record equals M, then before confirming, the polarity of this pixel of continuous N frame is identical;
Wherein, the defining method of the frame number that the polarity of this pixel of record is consecutive identical is: when adjacent two two field pictures compared exist the identical row of data, then frame number consecutive identical for the polarity of this pixel of record is added 1, until when the consecutive identical frame number of the polarity of this pixel of record equals M, frame number consecutive identical for the polarity of this pixel of record is updated to 1; When adjacent two two field pictures compared do not exist the identical row of data, frame number consecutive identical for the polarity of this pixel of record is updated to 1; The initial value of the frame number that the polarity of this pixel wherein recorded is consecutive identical is 1.
It should be noted that, the above-mentioned method for displaying image that the embodiment of the present invention provides is only applicable to liquid crystal display at present, this is because in liquid crystal display after charging to each pixel, the state of liquid crystal can maintain a period of time, therefore in above-mentioned method for displaying image, when the data of adjacent two two field pictures are identical, even if when showing the rear two field picture in these adjacent two two field pictures, do not carry out Refresh Data, due to the characteristic of liquid crystal display, liquid crystal also still remains state during display previous frame image, therefore still can normally show.
In the specific implementation, in the above-mentioned method for displaying image that the embodiment of the present invention provides, M value is larger, and illustrate that liquid crystal needs the number of times of reversion also fewer, it is also more that relative power consumption reduces.But M value is larger, illustrate that liquid crystal continues to keep the time of a certain fixing polarity longer, display effect is relatively poor, and M value is too little, and illustrate that polarity needs the number of times of reversion also more, it is also fewer that relative power consumption reduces.Therefore the size of M is determined in actual applications according to actual conditions.
Preferably, in the above-mentioned method for displaying image that the embodiment of the present invention provides, best results when M gets 10, does not namely affect display effect taking into account on the basis reducing power consumption.
Further, in the specific implementation, time schedule controller generally controls the polarity of each row data by the current potential controlling polarity control signal, the mode carrying out control data polarity especially by polarity control signal is same as the prior art, and therefore not to repeat here.
Therefore, in the above-mentioned method for displaying image that the embodiment of the present invention provides, before display two field picture to be shown, determine that the polarity of each row data that two field picture to be shown is corresponding is the need of reversing, be equivalent to the current potential determining polarity control signal, like this when showing two field picture to be shown, whether the polarity controlling pixel according to the current potential of the polarity control signal determined reverses.
Below by two specific embodiments, the above-mentioned method for displaying image that the embodiment of the present invention provides is described.
For convenience of explanation, get M and equal 4, for one of them pixel, when to be given for the current potential of polarity control signal POL controlling this pixel polarity be noble potential, the polarity of pixel is just, when the current potential of polarity control signal POL is electronegative potential, the polarity of pixel is negative.
Specifically as shown in Table 1 and Table 2, suppose that the polarity of this pixel that the 1st two field picture is corresponding is just, in table, which frame " frame number " represents, " continuous frame number " represents the frame number that the polarity of this pixel of record is consecutive identical, " positive frame number " represents that the polarity of this pixel of record is positive frame number, " negative frame number " represents that the polarity of this pixel of record is the frame number of negative image, " POL " represents the current potential of polarity control signal, " polarity " represents the polarity of this pixel, " inversion-type " states the type of the polarity generation reversion of this pixel, " y " in content bar represents that every data line is all identical compared with the data of previous frame image, " n " in content bar represents that every data line is all different compared with the data of previous frame image, " f " in content bar represents that partial row of data is identical compared with the data of previous frame image, " Y " in action hurdle represents full frame refreshing, " N " expression in action hurdle does not refresh, " F " in action hurdle represents partial refresh.
For the 5th two field picture in table 1 and content corresponding to the 6th two field picture and action, the content that in his-and-hers watches 1 and table 2, each two field picture is corresponding and action are described.
The content that the 5th two field picture is in Table 1 corresponding is that " y/f/n " represents that the data of the 6th two field picture every a line homogeneous phase compared with the data of the 5th two field picture is same or partial row is identical or every a line is all not identical, the action that 6th two field picture is corresponding is that " Y " represents what the content regardless of the 5th two field picture is, all needs full frame refreshing when showing.
The content that the 6th two field picture is in Table 1 corresponding is that " y/f/n " represents that the data of the 6th two field picture every a line homogeneous phase compared with the data of the 5th two field picture is same or partial row is identical or every a line is all not identical, the action that 6th two field picture is corresponding is that " N/F/Y " represents that the data every a line homogeneous phase compared with the data of the 5th two field picture when the 6th two field picture is do not need to refresh when showing simultaneously, when the data of the 6th two field picture only need partial refresh when showing when partial row is identical compared with the data of the 5th two field picture, when the data of the 6th two field picture need full frame refreshing when showing when every a line is all not identical compared with the data of the 5th two field picture.
| Frame number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Positive frame number | 1 | 2 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 6 | 6 | 6 |
| Negative frame number | 0 | 0 | 0 | 0 | 1 | 2 | 3 | 4 | 4 | 4 | 5 | 6 |
| Continuous frame number | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 1 | 2 | 1 | 2 |
| POL | High | High | High | High | Low | Low | Low | Low | High | High | Low | Low |
| Polarity | + | + | + | + | - | - | - | - | + | + | - | - |
| Inversion-type | Two | One | Three | |||||||||
| Content | y/f | y/f | y/f | y/f/n | y/f/n | y/f/n | y/f/n | y/f/n | y/f | n | y/f/n | |
| Action | Y | N/F | N/F | N/F | Y | N/F/Y | N/F/Y | N/F/Y | Y | N/F | Y | N/F/Y |
Table 1
| Frame number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Positive frame number | 1 | 2 | 2 | 2 | 3 | 4 | 5 | 6 | 6 | 6 | 6 | 6 |
| Negative frame number | 0 | 0 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 4 | 5 | 6 |
| Continuous frame number | 1 | 2 | 1 | 2 | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 |
| POL | High | High | High | High | Low | Low | High | High | High | Low | Low | Low |
| Polarity | + | + | - | - | + | + | + | + | - | - | - | - |
| Inversion-type | Three | One | Two | |||||||||
| Content | y/f | n | y/f/n | y/f/n | y/f | y/f | y/f | y/f/n | y/f/n | y/f/n | y/f/n | |
| Action | Y | N/F | Y | N/F/Y | Y | N/F | N/F | N/F | Y | N/F/Y | N/F/Y | N/F/Y |
Table 2
Further, for continuous print 3 two field picture, illustrate the embodiment of the present invention and how to realize reversal of poles control and Refresh Data control.
The first situation:
As shown in Figure 3 a, suppose that the polarity of each pixel of the (n-1)th two field picture is just, and each row pixel all refreshes when showing; The data of the n-th two field picture are identical with the data of the (n-1)th two field picture, and the polarity of each pixel of the n-th two field picture is also all identical with the polarity of each pixel of the (n-1)th two field picture, so when display the n-th two field picture, source electrode drive circuit and gate driver circuit all do not need output signal, and the current potential of polarity control signal POL does not need to change yet; Identical row is there is not in every data line of the (n+1)th two field picture compared with the n-th two field picture corresponding row data, and the polarity of each pixel of the (n+1)th two field picture is contrary with the polarity of each pixel of the n-th two field picture, so when display the (n-1)th two field picture, the current potential of polarity control signal POL needs to change, and source electrode drive circuit and gate driver circuit all need output signal.Corresponding sequential chart as shown in Figure 3 b.
The second situation:
As shown in fig. 4 a, suppose that the polarity of each pixel of the (n-1)th two field picture is just, and each row pixel all refreshes when showing; Identical row is there is in a-quadrant and C region in every data line of the n-th two field picture compared with the (n-1)th two field picture corresponding row data, identical row is there is not in B region, and the polarity of each pixel of the n-th two field picture is also all identical with the polarity of each pixel of the (n-1)th two field picture, so when display the n-th two field picture, the current potential of polarity control signal POL does not need to change, output signal is not all needed for a-quadrant and C region source electrode drive circuit and gate driver circuit, output signal is all needed for B region source electrode drive circuit and gate driver circuit; Identical row is there is not in every data line of the (n+1)th two field picture compared with the n-th two field picture corresponding row data, and the polarity of each pixel of the (n+1)th two field picture is contrary with the polarity of each pixel of the n-th two field picture, so when display the (n-1)th two field picture, the current potential of polarity control signal POL needs to change, and source electrode drive circuit and gate driver circuit all need output signal.Corresponding sequential chart as shown in Figure 4 b.
Wherein, in Fig. 3 b and Fig. 4 b, " STV " represents the trigger pip that each frame starts; " OE1 " represents the control signal that gate driver circuit outputs signal, and wherein noble potential represents that gate driver circuit does not output signal, and electronegative potential represents that gate driver circuit outputs signal; " POL " represents polarity control signal; " Source-output " represents the signal that source electrode drive circuit exports; " Vcom " represents common electric voltage.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of liquid crystal display, as shown in Figure 5, comprising: control module 01, source electrode drive circuit 02 and gate driver circuit 03; Wherein,
Control module 01, for judging the polarity of each row data that the n-th two field picture to be shown is corresponding, the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion;
When determining that the polarity of each row data that the n-th two field picture is corresponding needs reversion, the polarity of control module 01 also for being controlled each row data corresponding to two field picture to be shown by source electrode drive circuit 02 is reversed; Control module 01 also carries out full frame refreshing, to show two field picture to be shown for each row Data Control source electrode drive circuit 02 after reversing according to polarity and gate driver circuit 03;
When determining that the polarity of each row data that the n-th two field picture is corresponding does not need reversion, control module 01 has also shown the data of image corresponding row for every a line of two field picture more to be shown and former frame, determine in two field picture to be shown, data and former frame have shown the not identical row of the data of image corresponding row, as change row, only refresh change row by control source electrode drive circuit 02 and gate driver circuit 03.
In the above-mentioned liquid crystal display device that the embodiment of the present invention provides, control module judges the polarity of each row data that the n-th two field picture to be shown is corresponding, and the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion; When determining to need reversion, the polarity that control source electrode drive circuit controls each row data corresponding to two field picture to be shown is reversed, and each row Data Control source electrode drive circuit after reversing according to polarity and gate driver circuit carry out full frame refreshing, to show two field picture to be shown; When determining not need reversion, then every a line of two field picture more to be shown and former frame have shown the data of image corresponding row, determine in two field picture to be shown, data and former frame have shown the not identical row of the data of image corresponding row, as change row, only refresh change row by control source electrode drive circuit and gate driver circuit.As long as like this when two two field pictures that the polarity of corresponding row data is identical exist the row of identical data, when showing the rear two field picture in these adjacent two two field pictures, the row identical for data refreshes with regard to not needing, thus when reducing display one two field picture, need the data of refreshing, and then reduce display power consumption.Therefore compared to existing technology, even have partial row identical in adjacent two two field pictures of above-mentioned liquid crystal display, also the effect reducing power consumption can be played, and above-mentioned liquid crystal display utilizes reduction refresh data amount to reach the object of reduction power consumption with reach the object of reduction in prior art by reducing transmitted data amount compared with, and the degree reducing the reduction power consumption that refresh data amount reaches is larger.
Preferably, in the liquid crystal display that the embodiment of the present invention provides, control module also for, when the quantity changing row is zero, by time sequence controller grid pole driving circuit, the on-off element in each row pixel is closed, and control source electrode drive circuit does not export each row data, makes each row pixel keep each row data of the (n-1)th two field picture.
Preferably, in the liquid crystal display that the embodiment of the present invention provides, control module also for, when the quantity determining to change row is non-vanishing, by time sequence controller grid pole driving circuit, the on-off element of corresponding row pixel is opened, on-off element in other row pixels is closed, and controls the capable data-signal of source electrode drive circuit exporting change, and controls each row data that other row pixels keep the (n-1)th two field picture.
In the specific implementation, in the liquid crystal display that the embodiment of the present invention provides, control module can be integrated on time schedule controller, may also be separately to arrange, in this no limit.
Preferably, in the liquid crystal display that the embodiment of the present invention provides, control module is integrated on time schedule controller.
Preferably, in the liquid crystal display that the embodiment of the present invention provides, control module specifically for: for any one pixel on display device, search the 1st ~ the (n-1)th frame and shown the positive and negative of the polarity of pixel corresponding to image; If the quantity of the positive-negative polarity of pixel is identical, then determine the polarity of each row data that two field picture to be shown is corresponding, the polarity that former frame of comparing has shown each row data corresponding to image needs reversion, and reversion is defined as first kind reversion; If the quantity of the positive-negative polarity of pixel is not identical, then judge that whether the polarity of the n-th-M ~ the (n-1)th frame pixel is identical, if, then determine that the polarity of two field picture to be shown needs reversion, and reversion is defined as Second Type reversion, otherwise, determine the type of the last time reversion before two field picture to be shown; If determine, the type of the last time reversion before two field picture to be shown is first kind reversion or reversion did not occur, then every a line of two field picture more to be shown and former frame have shown the data of image corresponding row; If comparative result is there is the identical row of data, then determine that the polarity of two field picture to be shown each row data when showing does not need to reverse; If comparative result does not exist the identical row of data, then the polarity determined to compare the polarity of each row data that two field picture to be shown is corresponding former frame shown each row data corresponding to image needs reversion, and this reversion is defined as the 3rd type reversion; If determine, the type of the last time reversion before two field picture to be shown is Second Type reversion or the reversion of the 3rd type, then the polarity determined to compare the polarity of each row data that two field picture to be shown is corresponding former frame shown each row data corresponding to image does not need reversion; Wherein M is the integer of 1 ~ 16.
The method for displaying image that the embodiment of the present invention provides and liquid crystal display, judge the polarity of each row data that the n-th two field picture to be shown is corresponding, and the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion; If so, the polarity controlling each row data corresponding to two field picture to be shown is reversed, and the full frame refreshing of each row data after reversing according to polarity, to show two field picture to be shown; If not, every a line of two field picture more to be shown and former frame have shown the data of image corresponding row, determine in two field picture to be shown, and data and former frame have shown the not identical row of the data of image corresponding row, as change row, only refresh change row.As long as like this when two two field pictures that the polarity of corresponding row data is identical exist the row of identical data, when showing the rear two field picture in these adjacent two two field pictures, the row identical for data refreshes with regard to not needing, thus effectively can reduce the power consumption of refreshed image, and then effectively can reduce image display power consumption.Therefore compared to existing technology, even have partial row identical in adjacent two two field pictures of above-mentioned method for displaying image, also the effect reducing power consumption can be played, and utilize reduction refresh data amount to reach the object of reduction power consumption with reach the object of reduction in prior art by reducing transmitted data amount compared with in above-mentioned method for displaying image, the degree reducing the reduction power consumption that refresh data amount reaches is larger.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a method for displaying image, is characterized in that, comprising:
Judge the polarity of each row data that the n-th two field picture to be shown is corresponding, the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion; Wherein, n be not less than 1 positive integer;
If so, the polarity controlling each row data corresponding to described two field picture to be shown is reversed, and the full frame refreshing of each row data after reversing according to polarity, to show described two field picture to be shown;
Otherwise, every a line of more described two field picture to be shown and former frame have shown the data of image corresponding row, determine in two field picture to be shown, and data and described former frame have shown the not identical row of the data of image corresponding row, as change row, only refresh described change row.
2. method for displaying image as claimed in claim 1, it is characterized in that, described method also comprises:
If the quantity of described change row is zero, then time sequence controller grid pole driving circuit makes the on-off element in each row pixel cut out, and control source electrode drive circuit does not export each row data, makes each row pixel keep each row data of the (n-1)th two field picture.
3. method for displaying image as claimed in claim 1 or 2, is characterized in that, determine in two field picture to be shown, and data and described former frame have shown the not identical row of the data of image corresponding row, and as change row, it is capable only to refresh described change, is specially:
Time sequence controller grid pole driving circuit makes the on-off element of corresponding row pixel open, on-off element in other row pixels is closed, and control the data-signal that source electrode drive circuit only exports described change row, and control each row data that other row pixels keep the (n-1)th two field picture.
4. method for displaying image as claimed in claim 1, it is characterized in that, judge the polarity of each row data that the n-th two field picture to be shown is corresponding, the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion, is specially:
For any one pixel on display device, search the 1st ~ the (n-1)th frame and shown the positive and negative of the polarity of described pixel corresponding to image;
If the quantity of the positive-negative polarity of described pixel is identical, then determine that the polarity of each row data that described two field picture to be shown is corresponding needs reversion, and this reversion is defined as first kind reversion;
If the quantity of the positive-negative polarity of described pixel is not identical, then judge that whether the polarity of pixel described in the n-th-M ~ the (n-1)th frame is identical, if, then determine that the polarity of described two field picture to be shown needs reversion, and described reversion is defined as Second Type reversion, otherwise, determine the type of the last time reversion before described two field picture to be shown;
If determine, the type of the last time reversion before described two field picture to be shown is first kind reversion or reversion did not occur, then every a line of more described two field picture to be shown and former frame have shown the data of image corresponding row; If comparative result is there is the identical row of data, then determine that the polarity of described two field picture to be shown each row data when showing does not need to reverse; If comparative result does not exist the identical row of data, then the polarity determined to compare the polarity of each row data that described two field picture to be shown is corresponding former frame shown each row data corresponding to image needs reversion, and this reversion is defined as the 3rd type reversion;
If determine, the type of the last time reversion before described two field picture to be shown is Second Type reversion or the reversion of the 3rd type, then the polarity determined to compare the polarity of each row data that described two field picture to be shown is corresponding former frame shown each row data corresponding to image does not need reversion; Wherein M is the integer of 1 ~ 16.
5. method for displaying image as claimed in claim 4, is characterized in that, search the 1st ~ the (n-1)th frame and shown the positive and negative of the polarity of described pixel corresponding to image, be specially:
The polarity of the described pixel of acquisition record is positive frame number and polarity is negative frame number, the polarity of described pixel determining to record is positive frame number and polarity is negative frame number, if the polarity of described pixel of record is positive frame number, to equal polarity be negative frame number, then determine that the 1st ~ the (n-1)th frame has shown the quantity of the positive-negative polarity of described pixel corresponding to image identical;
The polarity of described pixel determining to record is positive frame number and polarity is negative frame number, is specially:
Determine that the (n-1)th frame has shown the polarity of described pixel corresponding to image, if the polarity that the (n-1)th frame has shown described pixel corresponding to image is just, be then that positive frame number adds 1 by the polarity of described pixel of record, if the polarity that the (n-1)th frame has shown described pixel corresponding to image is negative, be then that negative frame number adds 1 by the polarity of described pixel of record, the initial value of the polarity wherein recording described pixel to be the initial value of positive frame number and the polarity of described pixel be negative frame number is 0.
6. a liquid crystal display, is characterized in that, comprising: control module, source electrode drive circuit and gate driver circuit;
Described control module is for judging the polarity of each row data that the n-th two field picture to be shown is corresponding, and the (n-1)th frame of comparing has shown the polarity of each row data corresponding to image the need of reversion;
When determining that the polarity of each row data that the n-th two field picture is corresponding needs reversion, the polarity of described control module also for being controlled each row data corresponding to described two field picture to be shown by described source electrode drive circuit is reversed; Described control module also carries out full frame refreshing, to show described two field picture to be shown for each row Data Control source electrode drive circuit after reversing according to polarity and gate driver circuit;
When determining that the polarity of each row data that the n-th two field picture is corresponding does not need reversion, described control module has also shown the data of image corresponding row for every a line of more described two field picture to be shown and former frame, determine in two field picture to be shown, data and described former frame have shown the not identical row of the data of image corresponding row, as change row, by controlling described source electrode drive circuit and described gate driver circuit, only to refresh described change capable.
7. liquid crystal display as claimed in claim 6, it is characterized in that, described control module also for, when the quantity of described change row is zero, by time sequence controller grid pole driving circuit, the on-off element in each row pixel is closed, and control source electrode drive circuit does not export each row data, makes each row pixel keep each row data of the (n-1)th two field picture.
8. liquid crystal display as claimed in claim 6, it is characterized in that, described control module is also for when the quantity determining to change row is non-vanishing, by time sequence controller grid pole driving circuit, the on-off element of corresponding row pixel is opened, on-off element in other row pixels is closed, and control the data-signal that source electrode drive circuit exports described change row, and control each row data that other row pixels keep the (n-1)th two field picture.
9. liquid crystal display as claimed in claim 6, is characterized in that, described control module specifically for: for any one pixel on display device, search the 1st ~ the (n-1)th frame and shown the positive and negative of the polarity of described pixel corresponding to image; If the quantity of the positive-negative polarity of described pixel is identical, then determine the polarity of each row data that described two field picture to be shown is corresponding, the polarity that former frame of comparing has shown each row data corresponding to image needs reversion, and described reversion is defined as first kind reversion; If the quantity of the positive-negative polarity of described pixel is not identical, then judge that whether the polarity of pixel described in the n-th-M ~ the (n-1)th frame is identical, if, then determine that the polarity of described two field picture to be shown needs reversion, and described reversion is defined as Second Type reversion, otherwise, determine the type of the last time reversion before described two field picture to be shown; If determine, the type of the last time reversion before described two field picture to be shown is first kind reversion or reversion did not occur, then every a line of more described two field picture to be shown and former frame have shown the data of image corresponding row; If comparative result is there is the identical row of data, then determine that the polarity of described two field picture to be shown each row data when showing does not need to reverse; If comparative result does not exist the identical row of data, then the polarity determined to compare the polarity of each row data that described two field picture to be shown is corresponding former frame shown each row data corresponding to image needs reversion, and this reversion is defined as the 3rd type reversion; If determine, the type of the last time reversion before described two field picture to be shown is Second Type reversion or the reversion of the 3rd type, then the polarity determined to compare the polarity of each row data that described two field picture to be shown is corresponding former frame shown each row data corresponding to image does not need reversion; Wherein M is the integer of 1 ~ 16.
10. liquid crystal display as claimed in claim 7 or 8, it is characterized in that, described control module is integrated on described time schedule controller.
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