CN103531165A - Method for reducing power consumption of liquid crystal display system - Google Patents
Method for reducing power consumption of liquid crystal display system Download PDFInfo
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- CN103531165A CN103531165A CN201310453514.8A CN201310453514A CN103531165A CN 103531165 A CN103531165 A CN 103531165A CN 201310453514 A CN201310453514 A CN 201310453514A CN 103531165 A CN103531165 A CN 103531165A
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Abstract
The invention relates to a method for reducing the power consumption of a liquid crystal display system. The method comprises the following steps that a time sequence controller receives image signals of a picture; the time sequence controller generates a grid electrode control signal and a source electrode control signal according to the image signals of the picture; a grid electrode driving circuit sequentially drives the odd number of scanning lines of a plurality of scanning lines and then sequentially drives the even number of scanning lines of the scanning lines according to the grid electrode control signal; a source electrode driving circuit charges a plurality of sub pixels contained by a liquid crystal panel through a plurality of data wires according to the source electrode control signal in the driving sequence of the scanning wires and the data voltage corresponding to the image signals. The on-line voltage of the data wires is at most switched once, and in addition, the common voltage of the liquid crystal panel is direct current voltage.
Description
Technical field
The invention relates to a kind of in order to reduce the method for liquid crystal display systems power consumption, espespecially a kind of change gate driver circuit drive the order of a plurality of sweep traces and change accordingly source electrode drive circuit output corresponding to the order of the data voltage of the signal of video signal of picture to reduce the method for liquid crystal display systems power consumption.
Background technology
Please refer to Fig. 1, Fig. 1 is the schematic diagram of the liquid crystal panel 100 of explanation point-polarity reversion (dot inversion).As shown in Figure 1, the arrangement mode that is coupled to the sub-pixel of same data line is that a zigzag (Zig-Zag) is arranged (dotted line as shown in Figure 1), and wherein the polarity of the adjacent subpixels of liquid crystal panel 100 is contrary.Take data line DL as example, green sub-pixels 101,105 ... with red sub-pixel 103,107 ... to be coupled to data line DL, wherein sweep trace S1 controls the switch that is coupled to green sub-pixels 101, sweep trace S2 controls the switch that is coupled to red sub-pixel 103, sweep trace S3 controls the switch that is coupled to green sub-pixels 105, and sweep trace S4 controls the switch that is coupled to red sub-pixel 107, and the rest may be inferred.Therefore the sub-pixel that, liquid crystal panel 100 comprises is to drive with zigzag.
As shown in Figure 1, the advantage of jagged type of drive is the effect that can show point (1dot) driving.Yet, the shortcoming of liquid crystal panel 100 is when liquid crystal panel 100 shows sprite or color mixture picture, because the polarity of the adjacent subpixels of liquid crystal panel 100 is contrary, so the source electrode drive circuit of liquid crystal panel 100 is output cathode voltage and reverse voltage continually, cause the power consumption of liquid crystal panel 100 very large.Therefore the power consumption of liquid crystal panel 100 that, how to reduce point-polarity reversion is by an important topic that is liquid crystal panel deviser.
Summary of the invention
It is a kind of in order to reduce the method for liquid crystal display systems power consumption that one embodiment of the invention provide, wherein this liquid crystal display systems comprises a liquid crystal panel, time schedule controller, a gate driver circuit, one source pole driving circuit, a plurality of sweep traces and a plurality of data lines, and this liquid crystal panel comprises a plurality of sub-pixels.The method comprises the following step: this time schedule controller receives the signal of video signal of a picture; This time schedule controller, according to the signal of video signal of this picture, produces a grid control signal and a source control signal corresponding to this grid control signal; This gate driver circuit, according to this grid control signal, sequentially drives the odd number bar sweep trace in these a plurality of sweep traces, and sequentially drives the even number bar sweep trace in these a plurality of sweep traces again; This source electrode drive circuit is according to the driving order of this source control signal, these a plurality of sweep traces with corresponding to the data voltage of this signal of video signal, see through these a plurality of data lines to these a plurality of sub-pixel chargings, wherein the voltage of these a plurality of online data is switched once at most, and the common voltage of this liquid crystal panel is a DC voltage.
The invention provides a kind of in order to reduce the method for liquid crystal display systems power consumption.The method is to change a gate driver circuit to drive the order of a plurality of sweep traces and change accordingly the output of one source pole driving circuit corresponding to the order of the data voltage of the signal of video signal of a picture.Because the present invention can make in this source electrode drive circuit output significantly reduce corresponding to the switching times of the data voltage of this signal of video signal, so the present invention can reduce the power consumption of this liquid crystal display systems significantly.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the liquid crystal panel of explanation point-polarity reversion;
Fig. 2 is the schematic diagram of explanation liquid crystal display systems;
Fig. 3 is that one embodiment of the invention explanation is a kind of in order to reduce the process flow diagram of the method for liquid crystal display systems power consumption;
Fig. 4 is the schematic diagram that the liquid crystal panel of explanation liquid crystal display systems shows red picture;
Fig. 5 is the schematic diagram that the liquid crystal panel of explanation liquid crystal display systems shows green and blue picture;
Fig. 6 is the schematic diagram that the liquid crystal panel of explanation liquid crystal display systems shows red bluish-green picture.
[primary clustering symbol description]
100,102 liquid crystal panels
101,105,1027-1032 green sub-pixels
103,107,1021-1026 red sub-pixel
1033-1038 blue subpixels
104 time schedule controllers
106 gate driver circuits
108 source electrode drive circuits
D1-DM, DL data line
GCS grid control signal
IS signal of video signal
SCS source control signal
S1-SN sweep trace
300-310 step.
Embodiment
Please refer to Fig. 2 to Fig. 6, Fig. 2 is the schematic diagram of explanation liquid crystal display systems 10, Fig. 3 is that one embodiment of the invention explanation is a kind of in order to reduce the process flow diagram of the method for liquid crystal display systems power consumption, Fig. 4 is the schematic diagram that the liquid crystal panel of explanation liquid crystal display systems 10 shows red picture, Fig. 5 is the schematic diagram that the liquid crystal panel of explanation liquid crystal display systems 10 shows green and blue picture, and Fig. 6 is the schematic diagram that the liquid crystal panel of explanation liquid crystal display systems 10 shows red bluish-green picture.As shown in Figure 2, liquid crystal display systems 10 comprises a liquid crystal panel 102, time schedule controller 104, a gate driver circuit 106, one source pole driving circuit 108, a plurality of sweep traces S1-SN and a plurality of data lines D1-DM, liquid crystal panel 102 comprises a plurality of sub-pixels, and N, M are positive integer, wherein liquid crystal panel 102 is that the arrangement mode of sub-pixel that is coupled to a data line of a plurality of data lines D1-DM in the point-polarity reversion liquid crystal panel of (dot inversion) and a plurality of sub-pixels of liquid crystal panel 102 is a zigzag (Zig-Zag).As shown in Figure 2, gate driver circuit 106 and source electrode drive circuit 108 are to be coupled to time schedule controller 104, and each sub-pixel in a plurality of sub-pixels of liquid crystal panel 102 is one scan line in corresponding a plurality of sweep traces S1-SN and a data line of a plurality of data lines D1-DM.The method of Fig. 3 is to utilize liquid crystal display systems 10 explanations of Fig. 2, and detailed step is as follows:
Step 300: start;
Step 302: time schedule controller 104 receives the signal of video signal IS of a picture;
Step 304: time schedule controller 104, according to the signal of video signal IS of picture, produces a grid control signal GCS and a source control signal SCS corresponding to grid control signal GCS;
Step 306: gate driver circuit 106, according to grid control signal GCS, sequentially drives the odd number bar sweep trace in a plurality of sweep traces S1-SN, and sequentially drive again the even number bar sweep trace in a plurality of sweep traces S1-SN;
Step 308: source electrode drive circuit 108 is according to the driving order of source control signal SCS, a plurality of sweep traces S1-SN with corresponding to the data voltage of signal of video signal IS, see through a plurality of sub-pixel chargings of a plurality of data lines D1-DM to liquid crystal panel 102, wherein the voltage on a plurality of data lines D1-DM is switched once at most, and the common voltage of liquid crystal panel 102 is a DC voltage;
Step 310: finish.
In step 304, time schedule controller 104 can according to the sequential in the signal of video signal IS of picture be presented at the position of liquid crystal panel 102, produce grid control signal GCS and source control signal SCS corresponding to grid control signal GCS.In step 306, gate driver circuit 106 is according to grid control signal GCS, sequentially drive odd number bar sweep trace S1, S3 in a plurality of sweep traces S1-SN ..., and sequentially drive again even number bar sweep trace S2, S4 in a plurality of sweep traces S1-SN ...
But in another embodiment of the present invention, gate driver circuit 106 is according to grid control signal GCS, sequentially drive even number bar sweep trace S2, S4 in a plurality of sweep traces S1-SN ..., and sequentially drive again odd number bar sweep trace S1, S3 in a plurality of sweep traces S1-SN ...Therefore, in step 308, source electrode drive circuit 108 according to source control signal SCS, odd number bar sweep trace S1, S3 ... driving order and corresponding to the data voltage of signal of video signal IS, see through in a plurality of data lines D1-DM corresponding to odd number bar sweep trace S1, S3 ... data line to the charging of sub-pixel corresponding in a plurality of sub-pixels of liquid crystal panel 102 so that the image that liquid crystal panel 102 shows corresponding to signal of video signal IS, wherein, when liquid crystal panel 102 shows the image corresponding to signal of video signal IS, the common voltage of liquid crystal panel 102 is a DC voltage.
As shown in Figure 4, when signal of video signal IS is corresponding redness, gate driver circuit 106 is first according to grid control signal GCS, sequentially drive odd number bar sweep trace S1, S3 in a plurality of sweep traces S1-SN ..., that is in liquid crystal panel 102, be coupled to odd number bar sweep trace S1, S3 ... sub-pixel switch be sequentially unlocked.Therefore, take data line D1 as example, because the pixel switch of corresponding red sub-pixel 1021,1023,1025 is sequentially unlocked, thus source electrode drive circuit 108 can according to odd number bar sweep trace S1, S3 ... driving order and red sub-pixel 1021,1023,1025 chargings to liquid crystal panel 102 corresponding to the data voltage of signal of video signal IS.
As shown in Figure 4, because red sub-pixel the 1021,1023, the 1025th, positive polarity, for example, so are positive voltage (5V) to the data voltage of red sub-pixel 1021,1023,1025 chargings of liquid crystal panel 102.But it is 5V that the present invention is not limited to the data voltage of red sub-pixel 1021,1023,1025 chargings of liquid crystal panel 102.
In addition, Fig. 4 only utilizes odd number bar sweep trace S1, S3, S5 that the present invention is described, in a plurality of sweep traces S1-SN, the principle of operation of all the other odd number bar sweep traces is all identical with odd number bar sweep trace S1, S3, S5, does not repeat them here.In addition, as shown in Figure 4, when signal of video signal IS is corresponding redness, gate driver circuit 106 is according to grid control signal GCS, sequentially drive odd number bar sweep trace S1, S3 in a plurality of sweep traces S1-SN ... after, sequentially drive even number bar sweep trace S2, S4 in a plurality of sweep traces S1-SN ..., that is in liquid crystal panel 102, be coupled to even number bar sweep trace S2, S4 ... pixel switch be sequentially unlocked.Therefore, take data line D2 as example, because the pixel switch of corresponding red sub-pixel 1022,1024,1026 is sequentially unlocked, thus source electrode drive circuit 108 can according to even number bar sweep trace S2, S4 ... driving order and red sub-pixel 1022,1024,1026 chargings to liquid crystal panel 102 corresponding to the data voltage of signal of video signal IS.
As shown in Figure 4, because red sub-pixel the 1022,1024, the 1026th, negative polarity, for example, so are negative voltage (-5V) to the data voltage of red sub-pixel 1022,1024,1026 chargings of liquid crystal panel 102.But the present invention is not limited to.
In addition, as shown in Figure 4, take data line D2 as example, when signal of video signal IS is corresponding redness, corresponding odd number bar sweep trace S1, S3, S5 ... green sub-pixels 1027,1029,1031 be closed condition, so the corresponding odd number bar of data line D2 sweep trace S1, S3, S5 ... data voltage be 0.
In addition, Fig. 4 only utilizes even number bar sweep trace S2, S4, S6 that the present invention is described, in a plurality of sweep traces S1-SN, the principle of operation of all the other even number bar sweep traces is all identical with even number bar sweep trace S2, S4, S6, does not repeat them here.Therefore, as shown in Figure 4, the switching times corresponding to the data voltage (positive voltage and negative voltage) of signal of video signal IS in a plurality of data lines D1-DM significantly reduces.For example, the data voltage on data line D1, D2 only has at most and is switched once respectively.
In addition, because gate driver circuit 106 is according to grid control signal GCS, first sequentially drive the odd number bar sweep trace in a plurality of sweep traces S1-SN, and sequentially drive again the even number bar sweep trace in a plurality of sweep traces S1-SN, so the driving order that source electrode drive circuit 108 output also must corresponding a plurality of sweep traces S1-SN corresponding to the data voltage of signal of video signal IS.In addition, when signal of video signal IS is while being corresponding red, the green sub-pixels of liquid crystal panel 102 with and blue subpixels be closed condition, so now the green sub-pixels of liquid crystal panel 102 with and blue subpixels present black picture.That is now liquid crystal panel 102 is to utilize red sub-pixel to show red picture.
In like manner, as shown in Figure 5, when signal of video signal IS is corresponding green and blue (red sub-pixel of liquid crystal panel 102 is closed condition), take data line D2 as example, because the pixel switch of corresponding green sub-pixels 1027,1029,1031 is sequentially unlocked, thus source electrode drive circuit 108 can according to odd number bar sweep trace S1, S3 ... driving order and green sub-pixels 1027,1029,1031 chargings to liquid crystal panel 102 corresponding to the data voltage of signal of video signal IS.
As shown in Figure 5, because green sub-pixels the 1027,1029, the 1031st, negative polarity, for example, so are negative voltage (-5V) to the data voltage of green sub-pixels 1027,1029,1031 chargings of liquid crystal panel 102.In addition, as shown in Figure 5, take data line D2 as example, when signal of video signal IS is corresponding green and blueness, corresponding even number bar sweep trace S2, S4, S6 ... red sub-pixel 1022,1024,1026 be closed condition, so the corresponding even number bar of data line D2 sweep trace S2, S4, S6 ... data voltage be 0.
In addition, as shown in Figure 5, take data line D3 as example, because the pixel switch of corresponding green sub-pixels 1028,1030,1032 is sequentially unlocked, thus source electrode drive circuit 108 can according to even number bar sweep trace S2, S4 ... driving order and green sub-pixels 1028,1030,1032 chargings to liquid crystal panel 102 corresponding to the data voltage of signal of video signal IS.As shown in Figure 5, because green sub-pixels the 1028,1030, the 1032nd, positive polarity, for example, so are positive voltage (5V) to the data voltage of green sub-pixels 1028,1030,1032 chargings of liquid crystal panel 102.
In addition, as shown in Figure 5, take data line D3 as example, because the pixel switch of corresponding blue subpixels 1033,1035,1037 is sequentially unlocked, thus source electrode drive circuit 108 can according to odd number bar sweep trace S1, S3 ... driving order and blue subpixels 1033,1035,1037 chargings to liquid crystal panel 102 corresponding to the data voltage of signal of video signal IS.As shown in Figure 5, because blue subpixels the 1033,1035, the 1037th, positive polarity, for example, so are positive voltage (5V) to the data voltage of blue subpixels 1033,1035,1037 chargings of liquid crystal panel 102.
In addition, Fig. 5 only utilizes odd number bar sweep trace S1, S3, S5 and even number bar sweep trace S2, S4, S6 that the present invention is described, in a plurality of sweep traces S1-SN, the principle of operation of all the other sweep traces, does not repeat them here.
In like manner, as shown in Figure 6, when signal of video signal IS is that (sub-pixel of the even number line of liquid crystal panel 102 is closed condition to corresponding red bluish-green picture, so now the sub-pixel of the even number line of liquid crystal panel 102 presents black picture) time, take data line D3 as example, because the pixel switch of corresponding blue subpixels 1033,1035,1037 is sequentially unlocked, thus source electrode drive circuit 108 can according to odd number bar sweep trace S1, S3 ... driving order and blue subpixels 1033,1035,1037 chargings to liquid crystal panel 102 corresponding to the data voltage of signal of video signal IS.As shown in Figure 6, because blue subpixels the 1033,1035, the 1037th, positive polarity, for example, so are positive voltage (5V) to the data voltage of blue subpixels 1033,1035,1037 chargings of liquid crystal panel 102.
In addition, as shown in Figure 6, take data line D3 as example, corresponding even number bar sweep trace S2, S4, S6 ... red sub-pixel 1028,1030,1032 be closed condition, so the corresponding even number bar of data line D3 sweep trace S2, S4, S6 ... data voltage be 0.
In addition, as shown in Figure 6, take data line D4 as example, because the pixel switch of corresponding blue subpixels 1034,1036,1038 is sequentially unlocked, thus source electrode drive circuit 108 can according to even number bar sweep trace S2, S4 ... driving order and blue subpixels 1034,1036,1038 chargings to liquid crystal panel 102 corresponding to the data voltage of signal of video signal IS.As shown in Figure 6, because blue subpixels the 1034,1036, the 1038th, negative polarity, for example, so are negative voltage (-5V) to the data voltage of blue subpixels 1034,1036,1038 chargings of liquid crystal panel 102.
In addition, as shown in Figure 6, take data line D4 as example, corresponding odd number bar sweep trace S1, S3, S5 ... red sub-pixel 1039,1041,1043 be closed condition, so the corresponding odd number bar of data line D4 sweep trace S1, S3, S5 ... data voltage be 0.
In addition, Fig. 6 only utilizes odd number bar sweep trace S1, S3, S5 and even number bar sweep trace S2, S4, S6 that the present invention is described, in a plurality of sweep traces S1-SN, the principle of operation of all the other sweep traces, does not repeat them here.
In sum, provided by the present invention is to change gate driver circuit to drive the order of a plurality of sweep traces and change accordingly source electrode drive circuit output corresponding to the order of the data voltage of the signal of video signal of picture in order to reduce the method for liquid crystal display systems power consumption.Because the present invention can make in source electrode drive circuit output significantly reduce corresponding to the switching times of the data voltage of signal of video signal, so the present invention can reduce the power consumption of liquid crystal display systems significantly.
Claims (5)
1. one kind in order to reduce the method for liquid crystal display systems power consumption, wherein this liquid crystal display systems comprises a liquid crystal panel, time schedule controller, a gate driver circuit, one source pole driving circuit, a plurality of sweep traces and a plurality of data lines, and this liquid crystal panel comprises a plurality of sub-pixels, and the method comprises the following step:
This time schedule controller receives the signal of video signal of a picture;
This time schedule controller, according to the signal of video signal of this picture, produces a grid control signal and a source control signal corresponding to this grid control signal;
This gate driver circuit, according to this grid control signal, sequentially drives the odd number bar sweep trace in these a plurality of sweep traces, and sequentially drives the even number bar sweep trace in these a plurality of sweep traces again; And
This source electrode drive circuit is according to the driving order of this source control signal, these a plurality of sweep traces with corresponding to the data voltage of this signal of video signal, see through these a plurality of data lines to these a plurality of sub-pixel chargings, wherein the voltage of these a plurality of online data is switched once at most, and the common voltage of this liquid crystal panel is a DC voltage.
2. the method for claim 1, it is characterized in that, this source electrode drive circuit is according to this source control signal, the driving order of these a plurality of sweep traces and corresponding to the data voltage of this signal of video signal, through these a plurality of data lines, the step of these a plurality of sub-pixels chargings more being comprised is when this gate driver circuit is according to this grid control signal, while sequentially driving the odd number bar sweep trace in these a plurality of sweep traces, this source electrode drive circuit is according to this source control signal, the driving order of this odd number bar sweep trace and corresponding to the data voltage of this signal of video signal, seeing through the data line corresponding to this odd number bar sweep trace in these a plurality of data lines charges to sub-pixel corresponding in these a plurality of sub-pixels.
3. the method for claim 1, it is characterized in that, this source electrode drive circuit is according to this source control signal, the driving order of these a plurality of sweep traces and corresponding to the data voltage of this signal of video signal, through these a plurality of data lines, the step of these a plurality of sub-pixels chargings more being comprised is when this gate driver circuit is according to this grid control signal, while sequentially driving the even number bar sweep trace in these a plurality of sweep traces, this source electrode drive circuit is according to this source control signal, the driving order of this even number bar sweep trace and corresponding to the data voltage of this signal of video signal, seeing through the data line corresponding to this even number bar sweep trace in these a plurality of data lines charges to sub-pixel corresponding in these a plurality of sub-pixels.
4. the method for claim 1, is characterized in that, this liquid crystal panel is the liquid crystal panel of point-polarity reversion.
5. the method for claim 1, is characterized in that, the arrangement mode of sub-pixel that is coupled to a data line of these a plurality of data lines in these a plurality of sub-pixels is a zigzag.
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| CN110767186A (en) * | 2019-09-29 | 2020-02-07 | 福建华佳彩有限公司 | Driving method of dual-gate panel |
| CN111123598A (en) * | 2020-01-19 | 2020-05-08 | 京东方科技集团股份有限公司 | Array substrate and display device |
| CN111508409A (en) * | 2019-01-31 | 2020-08-07 | 联咏科技股份有限公司 | Driving device of display panel and operation method thereof |
| CN113096579A (en) * | 2021-04-06 | 2021-07-09 | 福州京东方光电科技有限公司 | Display panel, display device and driving method of display panel |
| CN113160733A (en) * | 2020-01-22 | 2021-07-23 | 群创光电股份有限公司 | Electronic device |
| CN113903315A (en) * | 2019-01-31 | 2022-01-07 | 联咏科技股份有限公司 | Driving device of display panel and operation method thereof |
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Application publication date: 20140122 |