CN102054419B - Display panel drive device and method as well as image display device - Google Patents
Display panel drive device and method as well as image display device Download PDFInfo
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- CN102054419B CN102054419B CN 200910209170 CN200910209170A CN102054419B CN 102054419 B CN102054419 B CN 102054419B CN 200910209170 CN200910209170 CN 200910209170 CN 200910209170 A CN200910209170 A CN 200910209170A CN 102054419 B CN102054419 B CN 102054419B
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Abstract
The invention relates to a display panel drive device and method as well as an image display device, which is used for driving a display panel used for arranging a plurality of pixels in an array mode and connecting grid electrodes of each row of pixels in each row to form a plurality of scanning lines. The display panel drive device provided by the invention is characterized by being provided with a plurality of drive terminals for outputting drive levels, and adjacent drive terminals output the drive levels with opposite polarities; and the drive sequence of the plurality of drive terminals is set, so that in the process of displaying a frame image, the reversing number of the drive level is less than that of the drive level produced when the drive level is output from top to bottom.
Description
Technical field
The present invention relates to a kind of drive IC, display panel drive device and display device.Specifically, the invention provides and a kind ofly can reduce display device power consumption, and can prevent the deteriorated technology of liquid crystal in display panels.
Background technology
As existing display device, has the display panel that a plurality of pixels are arranged that two-dimensional-matrix-like is arranged, in this display panel, in each pixel is unit, has the control grid that whether shows of pixel and to the drain electrode of pixel luminous component power supply, connect by the grid with every row of display panel, and consist of a plurality of sweep traces of display panel with behavior unit.And utilize the lead-out terminal of panel drive circuit to be connected accordingly respectively with a plurality of sweep traces, can drive each sweep trace and scan, thereby realize showing.
In the prior art, when driving the sweep trace of display panels, panel drive circuit is according to driving and line by line scan to show each sweep trace successively from top to bottom or from bottom to up, perhaps, drives with interlace mode that each sweep trace shows.
And in order to prolong the serviceable life of panel, the interchange type of drive that usually adopts counter-rotating to drive when display panel is driven that is to say, when showing two adjacent frames, uses the voltage of counter-rotating to drive for same pixel.And, showing image quality in order to reduce power consumption and to promote, employing makes in the pixel polarity of carrying out on adjacent two sweep traces of continuous sweep opposite in same frame usually.Therefore, in the existing display device, in the drive division that again demonstration of display panel is driven, need to apply mutually opposite level to two sweep traces that scan continuously.
Summary of the invention
In above-mentioned existing display device, as shown in Figure 1, expression applies the synoptic diagram of grid drive level to display panel sweep trace (grid of each display line) from the drive division that drives display panel.Among the figure, drive in the clock period at each grid, from drive division (not shown) to corresponding sweep trace output grid drive level, and in the adjacent twice sweep, grid drive level polarity is opposite."+(1) ", " (2) " etc. were illustrated in this clock period among the figure, drive terminal numbering and the polarity ("+" or "-") of output drive level.And this polarity and numbering place represent the position of driven sweep trace at upper-lower position.
As we know from the figure, because in adjacent twice sweep, the REV signal reverses, thereby, the raising that has also brought power consumption.
In order to solve above-mentioned problems of the prior art, display panel drive device of the present invention, be used for a plurality of Pixel arrangements are become rectangular, and connect the grid of each row pixel and the display panel that consists of a plurality of sweep traces drives, have a plurality of drive terminal for the output drive level, the adjacent opposite drive level of described drive terminal output polarity, set the driving order of described a plurality of drive terminal, so that in the procedure for displaying of a two field picture, the counter-rotating number of times of the drive level of the counter-rotating number of times of described drive level when exporting drive level from top to bottom lacks.
In display panel drive device of the present invention, in the procedure for displaying of a two field picture, the order that described a plurality of drive terminal are exported described drive level is set as, and at first exports the drive level of a polarity, exports the drive level of another polarity again.
In above-mentioned display panel drive device, when each sweep trace to identical polar applies successively level and drives, so that driven sweep trace successively carries out the continuous drive of a plurality of sweep traces in the orientation of sweep trace farthest the mode of being separated by.
In addition, displaying panel driving method of the present invention, for to a plurality of Pixel arrangements are become rectangular, and connect the grid of each row pixel and consist of the method that the display panel of a plurality of sweep traces drives, adjacent sweep trace is supplied with opposite polarity drive level, in the procedure for displaying of a two field picture, setting applies the order of described drive level successively to each described sweep trace of display panel, so that the counter-rotating number of times of described drive level lacks than the drive level counter-rotating number of times from top to bottom of described sweep trace.
In above-mentioned displaying panel driving method, in the procedure for displaying of a two field picture, the order that each described sweep trace is applied described drive level is set as, and at first each sweep trace of a polarity is applied drive level successively, again each sweep trace of another polarity is applied drive level successively.
In above-mentioned displaying panel driving method, when each sweep trace to identical polar applies successively level and drives, so that driven sweep trace successively carries out the continuous drive of a plurality of sweep traces in the orientation of sweep trace farthest the mode of being separated by.
In addition, the present invention also provides a kind of image display device, has: a plurality of Pixel arrangements are become rectangular, and connect the grid of each row pixel and consist of the display panel of a plurality of sweep traces; With the display panel drive device that has respectively a plurality of drive terminal of described a plurality of sweep traces output drive levels, described display panel drive device is supplied with opposite polarity drive level to adjacent sweep trace, in the procedure for displaying of a two field picture, set described display panel drive device and drive the order that each described sweep trace is applied described drive level, so that the counter-rotating number of times of described drive level lacks than the drive level counter-rotating number of times from top to bottom of described sweep trace.
In above-mentioned image display device, in the procedure for displaying of a two field picture, the order that each described sweep trace is applied described drive level is set as, and at first each sweep trace of a polarity is applied drive level successively, again each sweep trace of another polarity is applied drive level successively.
In above-mentioned image display device, when each sweep trace to identical polar applies successively level and drives, so that driven sweep trace successively carries out the continuous drive of a plurality of sweep traces in the orientation of sweep trace farthest the mode of being separated by.
According to the present invention, can provide a kind of image display device that significantly reduces power consumption.
Description of drawings
Fig. 1 is for driving the gate drive signal cycle of display panel and the figure of polarity in the expression prior art.
Fig. 2 is the syndeton synoptic diagram of drive division and display panel in the expression first embodiment of the invention.
Fig. 3 is for driving the gate drive signal cycle of display panel and the figure of polarity in the expression first embodiment of the invention.
Fig. 4 is the syndeton synoptic diagram of drive division and display panel in the expression second embodiment of the invention.
Embodiment
Below, by reference to the accompanying drawings the specific embodiment of the present invention is elaborated.In explanation, identical or suitable part is used same-sign and omitted repeat specification.
As shown in Figure 2, be the configuration example synoptic diagram of the display device of the first embodiment of the present invention, for convenience of explanation, describe as an example of display panel with 8 sweep traces (display line) example.11 expressions drive the drive division of display panels, 12 expression display panels, and drive division 11 has each sweep trace G1, the G2 with display panel 12 ... the drive terminal C1 that G8 is corresponding, C2 ... C8.In the present embodiment, only to show a two field picture as example, suppose the polarity of pixel of odd-numbered line for just, the pixel polarity of even number line is for negative, and in next frame, pixel polarity is opposite, and the description thereof will be omitted.
In existing display device, be with drive terminal C1, C2 ... C8 respectively with sweep trace G1, G2 ... G8 connects, and from top to bottom with C1, C2 ... the order of C8 is to each sweep trace G1, G2 ... G8 applies drive level.
In display device of the present invention, equally in each scanning line driving in the cycle, in drive division, output drive signal successively from top to bottom, and with drive terminal C1, C2 ... the order of C8 is output drive signal successively, but as shown in Figure 2, in display panel 12, be provided with change-over circuit 121, utilize this change-over circuit 121, drive successively at first from top to bottom and show that Semi-polarity is the sweep trace of positive pixel, in the present embodiment, sweep trace G1, G3, G5, the corresponding pixel polarity of G7 is being for just, and sequentially is G1 as the preferred embodiment driving, G7, G3, G5 drives successively the demonstration Semi-polarity again and is negative sweep trace, equally, sweep trace G2 in the present embodiment, G4, G6, the corresponding pixel polarity of G8 is being for just, and sequentially is G8 as the preferred embodiment driving, G2, G6, G4, and finish the turntable driving of whole sweep traces, thereby, can change the driving order that sweep trace is driven.
By adopting above-mentioned formation, owing to be provided with change-over circuit 121, therefore, as shown in Figure 3, in present embodiment, apply the synoptic diagram of grid drive level to the sweep trace of display panel 12 from the drive division 11 that drives display panel.
As shown in the figure, owing to changed the driving of each sweep trace order, when finishing the demonstration of 1 frame, reduce to 2 times so that drive the signal counter-rotating from 8 times of Fig. 1, thereby significantly reduced the power consumption of display device.
According to above-mentioned embodiment, because in a two field picture, at first driving polarity is positive sweep trace, after finishing the driving that total polar is positive sweep trace, and then drive polarity and be negative sweep trace, thereby greatly reduced the counter-rotating number of times of the drive level of drive division output, can reduce the power consumption of display device.
More than to the hypothesis in a two field picture, the sweep trace polarity of odd-numbered line is that positive situation is illustrated, but in the demonstration of the next frame image that is right after, exchange the mode that drives owing to adopt, make the sweep trace polarity of odd-numbered line for negative, in the case, also can at first drive polarity is positive sweep trace, after finishing the driving that total polar is positive sweep trace, and then drives polarity and is negative sweep trace, just at first drive the sweep trace of even number line, driven again the sweep trace of odd-numbered line.
When showing the next frame image, also can adopt the driving order identical with above-mentioned the first embodiment, just in the next frame image, at first drive polarity and be negative sweep trace, after finishing the driving of total polar for negative sweep trace, and then driving polarity is positive sweep trace, thereby can show continuous moving image.And, owing to when showing two continuous two field pictures, after the driving of last sweep trace of finishing former frame, need not to make the drive level counter-rotating.
In the above-described first embodiment, utilize the translation circuit 121 that is arranged in the display panel to change driven sweep line (grid of each display line) driving order, reduce the counter-rotating number of times of the drive level of sweep trace, thereby realize the reduction of power consumption.
Below, the second embodiment of the present invention is described, as shown in Figure 4, by change-over circuit 111 is set in drive division 11, and the control sequence of the sweep trace that drive division is exported is successively adjusted, so that when driving display panel, be that positive sweep trace drives to pixel polarity at first similarly, namely at first to the sweep trace G1 of display panel 12, G7, G3, G5 drives, after finishing the driving that whole pixel polarity are positive sweep trace, and then pixel polarity is driven for negative sweep trace, namely to the sweep trace G8 of display panel 12, G2, G6, G4 drives.Therefore, the scanning line driving order of grid drive level counter-rotating number of times that also can access as shown in Figure 3 reduction realizes the technique effect same with above-mentioned embodiment.
And, by in control part 11, translation circuit being set, can use existing display panel, thereby can under the condition of the cost that does not improve display device, realize the decline of power consumption.
In addition, in this 3rd embodiment, also provide to be applicable to image processing method of the present invention, in this image processing method, be used for frame image signal is processed, be used for the display that display device shows and generate.After having inputted picture signal, picture signal is reduced to continuous a plurality of two field pictures in display device inside, and after two field picture is processed, exports panel driving section 11 to, show to drive display panel 12.
In image processing apparatus of the present invention, at first receive each two field picture, then each row of two field picture rearranged, and form new two field picture, so that when the sweep trace to display panel drives, at first driving pixel polarity is positive sweep trace, then drives pixel polarity and is negative sweep trace.
By in image processing apparatus, carrying out above-mentioned processing, can realize easily the driver output of the drive division of display panel.
More than, the specific embodiment of the present invention is had been described in detail, but the present invention is not limited to above-mentioned concrete embodiment, so long as make in the procedure for displaying of a two field picture, the counter-rotating number of times of the drive level of the counter-rotating number of times of drive level when exporting drive level from top to bottom lacks, the counter-rotating number of times of grid drive level is reduced, just can realize the effect of the reduction of realization power consumption of the present invention.As it preferred embodiment, can be to be that just the sweep trace of (or negative) drives to pixel polarity at first, after finishing the driving that whole pixel polarity are positive sweep trace, and then the sweep trace of pixel polarity for negative (or just) driven, thereby, in making during the demonstration of a picture frame, the reversal of poles number of times of grid drive level is 1 time, thereby can further fall low consumed electric power.
In addition in the above-described embodiment, according to making successively driven display line carry out the continuous drive of a plurality of display lines in the orientation of display line farthest the mode of being separated by, namely as shown in Figure 3, in the situation with 8 epideictic behaviour examples, formed after driving display line G1, G7, G3, the G5, drive the order of display line G8, G2, G6, G4, by adopting this driving order, can also further improve the image quality that image shows.But the order for scanning line driving, in above-mentioned the first～the 3rd embodiment, because the pixel polarity of odd-numbered line and even number line is opposite, thereby can drive first odd-numbered line and drive again even number line, but also can scan from top to bottom for odd-numbered line, scan from bottom to up for even number line, perhaps adopt other driving orders.
Claims (3)
1. display panel drive device is used for a plurality of Pixel arrangements are become rectangular, and connects the grid of each row pixel and the display panel that consists of a plurality of sweep traces drives, and it is characterized in that:
Have a plurality of drive terminal for the output drive level,
The adjacent opposite drive level of described drive terminal output polarity,
Set the driving order of described a plurality of drive terminal, so that in the procedure for displaying of a two field picture, the counter-rotating number of times of the drive level of the counter-rotating number of times of described drive level when exporting drive level from top to bottom lacks,
In the procedure for displaying of a two field picture, the order that described a plurality of drive terminal are exported described drive level is set as, and at first exports the drive level of a polarity, exports the drive level of another polarity again,
When each sweep trace to identical polar applies successively level and drives, so that the sweep trace of first rear drive carries out the continuous drive of a plurality of sweep traces in the orientation of sweep trace farthest the mode of being separated by.
2. displaying panel driving method is for to a plurality of Pixel arrangements are become rectangular, and connects the grid of each row pixel and consist of the method that the display panel of a plurality of sweep traces drives, and it is characterized in that:
Adjacent sweep trace is supplied with opposite polarity drive level,
In the procedure for displaying of a two field picture, set the order that each described sweep trace of display panel is applied successively described drive level, so that the counter-rotating number of times of described drive level lacks than the drive level counter-rotating number of times from top to bottom of described sweep trace,
In the procedure for displaying of a two field picture, the order that each described sweep trace is applied described drive level is set as, and at first each sweep trace of a polarity is applied drive level successively, again each sweep trace of another polarity is applied drive level successively,
When each sweep trace to identical polar applies successively level and drives, so that the sweep trace of first rear drive carries out the continuous drive of a plurality of sweep traces in the orientation of sweep trace farthest the mode of being separated by.
3. image display device is characterized in that having:
A plurality of Pixel arrangements are become rectangular, and connect the grid of each row pixel and consist of the display panel of a plurality of sweep traces; With
Have the display panel drive device of respectively described a plurality of sweep traces being exported a plurality of drive terminal of drive levels,
Described display panel drive device is supplied with opposite polarity drive level to adjacent sweep trace,
In the procedure for displaying of a two field picture, set described display panel drive device and drive the order that each described sweep trace is applied described drive level, so that the counter-rotating number of times of described drive level lacks than the drive level counter-rotating number of times from top to bottom of described sweep trace,
In the procedure for displaying of a two field picture, the order that each described sweep trace is applied described drive level is set as, and at first each sweep trace of a polarity is applied drive level successively, again each sweep trace of another polarity is applied drive level successively,
When each sweep trace to identical polar applies successively level and drives, so that the sweep trace of first rear drive carries out the continuous drive of a plurality of sweep traces in the orientation of sweep trace farthest the mode of being separated by.
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| CN 200910209170 CN102054419B (en) | 2009-10-28 | 2009-10-28 | Display panel drive device and method as well as image display device |
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| CN 200910209170 CN102054419B (en) | 2009-10-28 | 2009-10-28 | Display panel drive device and method as well as image display device |
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| CN103426410B (en) * | 2012-05-16 | 2016-11-09 | 联咏科技股份有限公司 | Display driving device and method for driving display panel |
| CN103514846A (en) * | 2012-06-29 | 2014-01-15 | 北京京东方光电科技有限公司 | Liquid crystal display and driving method thereof |
| CN104036744B (en) * | 2014-06-07 | 2016-04-13 | 深圳市华星光电技术有限公司 | A kind of driving method of display and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1464499A (en) * | 2002-06-17 | 2003-12-31 | 友达光电股份有限公司 | Liquid crystal display panel driving circuit and method, and liquid crystal display |
| CN1525217A (en) * | 2003-02-28 | 2004-09-01 | 夏普株式会社 | Display device and method for driving the same |
| CN101266767A (en) * | 2007-03-14 | 2008-09-17 | 三星电子株式会社 | LCD Monitor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1464499A (en) * | 2002-06-17 | 2003-12-31 | 友达光电股份有限公司 | Liquid crystal display panel driving circuit and method, and liquid crystal display |
| CN1525217A (en) * | 2003-02-28 | 2004-09-01 | 夏普株式会社 | Display device and method for driving the same |
| CN101266767A (en) * | 2007-03-14 | 2008-09-17 | 三星电子株式会社 | LCD Monitor |
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