CN101996594A - Liquid crystal display and image dither compensation method - Google Patents
Liquid crystal display and image dither compensation method Download PDFInfo
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- CN101996594A CN101996594A CN2009101704218A CN200910170421A CN101996594A CN 101996594 A CN101996594 A CN 101996594A CN 2009101704218 A CN2009101704218 A CN 2009101704218A CN 200910170421 A CN200910170421 A CN 200910170421A CN 101996594 A CN101996594 A CN 101996594A
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Abstract
The invention discloses a liquid crystal display and an image dither compensation method. The liquid crystal display comprises a pixel array, a plurality of control lines and a drive unit. The pixel array comprises a plurality of pixels. The plurality of control lines are coupled to the plurality of pixels. The drive unit drives the pixel array through the plurality of control lines. When the pixel array is driven, in the pixels coupled to the same control line, the number of the pixels which have the positive polarity and are subjected to image dither compensation is equal to the number of the pixels which have the negative polarity and are subjected to image dither compensation.
Description
Technical field
The invention relates to a kind of LCD and image and pass the colorimetric compensation method, and the particularly relevant a kind of LCD and image that can solve the flicker problem passed the colorimetric compensation method.
Background technology
Pass in look (image-dithering) compensation method at traditional image, be the method that adopts similar colour mixture, utilize fewer purpose GTG value to do variation and obtain plurality purpose GTG value in spatial domain (spatial domain) or time domain (temporal domain).Please refer to Fig. 1, it illustrates the synoptic diagram that traditional image is passed the colorimetric compensation method.Now lifting 4 * 4 pel arrays is that example is done explanation, and pel array 102～108 is continuous on time shaft in regular turn, and wherein hatched example areas is represented the pixel that quilt is compensated because look passed by image respectively.Thus, no matter all can reach the effect of colour mixture and can not discovered, so can obtain the output of high-resolution according to less data input by human eye in spatial domain or time domain.
Yet it is constant that pixel can not be fixed on some voltage always, otherwise the liquid crystal molecule in the pixel can can't rotate in response to the variation of electric field because of the destruction of characteristic again, to form different GTGs.So just must change the polarity of a pixel at set intervals, the exchange by positive-negative polarity does not stop is destroyed with the characteristic of avoiding the liquid crystal molecule in the pixel.But thus, polar switching collocation image is passed colorimetric compensation and will be produced the problem of film flicker (flicker) easily because of the deviation of common voltage.
Please refer to Fig. 2, it illustrates the synoptic diagram that conventional polar conversion collocation image is passed colorimetric compensation.Now lifting 8 * 8 pel arrays and pel array is that counter-rotating (dot inversion) driving is done explanation for example, yet is not limited thereto.Suppose 8 * 8 pel arrays 202～208th, each carries out image with 44 * 4 pel arrays 102～108 and passs colorimetric compensation.Observing pel array 202～208 can learn, it is identical to be passed the polarity of pixel of colorimetric compensation by image in each row pixel, and being passed look by image in each row pixel, to mend the polarity of pixel of attendant of the bride or bridegroom at a wedding also identical.For example, the pixel that is compensated in the row pixel 210 of pel array 202 all has negative polarity, and the pixel that is compensated in the capable pixel 212 of pel array 208 all has positive polarity.Owing to easy because the factor on the processing procedure produces deviation as the common voltage of reference voltage for pel array, hereat if the pixel polarity that is compensated is identical, then Bu Chang brightness disproportionation will cause human eye will observe the phenomenon of flicker easily.
Summary of the invention
The invention relates to that a kind of LCD and image pass the colorimetric compensation method, overcome the deviation of common voltage by polarity complementarity condition between pixel, so can solve the flicker problem.
According to a first aspect of the invention, propose a kind of LCD, comprise a pel array, many control lines and a driver element.Pel array has a plurality of pixels.Many control line is coupled to these pixels.Driver element drives this pel array by these control lines.Wherein, when pel array is driven, be coupled in the pixel of same control line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
According to a second aspect of the invention, propose a kind of image and pass the colorimetric compensation method, be applied to a LCD.LCD comprises a pel array, many control lines and a driver element.Pel array has a plurality of pixels, and these control lines are coupled to these pixels, and driver element drives pel array by these control lines.The method comprises the following steps.Drive pel array, and the part pixel in the pel array is carried out image pass colorimetric compensation.Wherein, be coupled in the pixel of same control line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
Description of drawings
For foregoing of the present invention can be become apparent, below conjunction with figs. is elaborated to preferred embodiment of the present invention, wherein:
Fig. 1 illustrates the synoptic diagram that traditional image is passed the colorimetric compensation method.
Fig. 2 illustrates the synoptic diagram that conventional polar conversion collocation image is passed colorimetric compensation.
Fig. 3 illustrates the LCD according to preferred embodiment of the present invention.
Fig. 4 illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of first example of colorimetric compensation.
Fig. 5 illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of second example of colorimetric compensation.
Fig. 6 illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of the 3rd example of colorimetric compensation.
Fig. 7 illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of the 4th example of colorimetric compensation.
Fig. 8 illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of the 5th example of colorimetric compensation.
Embodiment
The objective of the invention is to propose a kind of LCD and image and pass the colorimetric compensation method, overcome the deviation of common voltage, so can solve the flicker problem by polarity complementarity condition between pixel.
The present invention discloses a kind of LCD, comprises a pel array, many control lines and a driver element.Pel array has a plurality of pixels.Many control line is coupled to these pixels.Driver element drives this pel array by these control lines.Wherein, when pel array is driven, be coupled in the pixel of same control line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation (image-dithering compensated).
Please refer to Fig. 3, it illustrates the LCD according to preferred embodiment of the present invention.LCD 300 comprises a pel array 310, many control lines and a driver element 320.Pel array 310 is one m * n pel arrays.Many control line is coupled between pel array 310 and the driver element 320.Next now lifting pel array 310 is one 8 * 8 pel arrays, and pel array 310 is respectively a counter-rotating (dot inversion), line counter-rotating (line inversion) or row counter-rotating (column inversion) driving and does explanation for example, so is not limited to this.
First embodiment～the 3rd embodiment
In LCD 300, driver element 320 comprises an one scan driver 322 and a data driver 324, control line partly for example is the multi-strip scanning line, other control line partly for example is many data lines, and each pixel of pel array 310 is separately corresponding to one of one and many data lines of multi-strip scanning line.Please refer to Fig. 4, it illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of first example of colorimetric compensation.Wherein, pel array 310 is inversion driving, so is not limited thereto.Pel array 310_12～310_18 in Fig. 4 is that remarked pixel array 310 is continuous on time shaft in regular turn, and hatched example areas is represented the pixel that quilt is compensated because look passed by image respectively.
Observing pel array 310_12～310_18 can learn, when pel array 310 is a some inversion driving, be coupled in the row pixel of same sweep trace, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation, and be coupled in the capable pixel of same data line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.For example, the polarity of the pixel that is compensated in the row pixel 332 of pel array 310_12 reaches average, the polarity of the pixel that is compensated in the row pixel 334 of pel array 310_14 reaches average, the polarity of the pixel that is compensated in the capable pixel 336 of pel array 310_16 reaches on average, and the polarity of the pixel that is compensated in the capable pixel 338 of pel array 310_18 reaches average.
In addition, if driver element 320 is to adopt bigrid (dual gate) structure, then pel array 310 also can be (1+2) some counter-rotating (1+2 dot inversion) or 2 counter-rotatings (2 dot inversion) driving.
Please refer to Fig. 5, it illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of second example of colorimetric compensation.In Fig. 5, pel array 310 is 2 inversion driving, yet is not limited thereto.Wherein, corresponding to 2 counter-rotatings, in single 4 * 4 pel arrays of pel array 310, per two pixel polar switching of each row pixel once, each the row pixel the neighbor polar switching once.Pel array 310_22～310_28 in Fig. 5 is that remarked pixel array 310 is continuous on time shaft in regular turn, and hatched example areas is represented the pixel that quilt is compensated because look passed by image respectively.
Observing pel array 310_22～310_28 can learn, when pel array 310 is 2 inversion driving, be coupled in the row pixel of same sweep trace, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation, and be coupled in the capable pixel of same data line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.For example, the polarity of the pixel that is compensated in the row pixel 342 of pel array 310_22 reaches average, the polarity of the pixel that is compensated in the row pixel 344 of pel array 310_24 reaches average, the polarity of the pixel that is compensated in the capable pixel 346 of pel array 310_26 reaches on average, and the polarity of the pixel that is compensated in the capable pixel 348 of pel array 310_28 reaches average.
Please refer to Fig. 6, it illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of the 3rd example of colorimetric compensation.In Fig. 6, pel array 310 is (1+2) some inversion driving, yet is not limited thereto.Wherein, corresponding to the counter-rotating of (1+2) point, in single 4 * 4 pel arrays of pel array 310, the polarity conversion once between first pixel of each row pixel and second pixel, between the 3rd pixel and the 4th pixel the polarity conversion once, the neighbor polar switching of each row pixel is once.Pel array 310_32～310_38 in Fig. 6 is that remarked pixel array 310 is continuous on time shaft in regular turn, and hatched example areas is represented the pixel that quilt is compensated because look passed by image respectively.
Observing pel array 310_32～310_38 can learn, when pel array 310 is (1+2) some inversion driving, be coupled in the row pixel of same sweep trace, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation, and be coupled in the capable pixel of same data line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.For example, the polarity of the pixel that is compensated in the row pixel 352 of pel array 310_32 reaches average, the polarity of the pixel that is compensated in the row pixel 354 of pel array 310_34 reaches average, the polarity of the pixel that is compensated in the capable pixel 356 of pel array 310_36 reaches on average, and the polarity of the pixel that is compensated in the capable pixel 358 of pel array 310_38 reaches average.
Thus, even because produce deviation because of technologic factor for pel array 310 easily as the common voltage with reference to voltage, but the polarity of the pixel that quilt is compensated reaches on average, and then Bu Chang brightness meeting trends towards equilibrium, make that human eye is difficult for discovering, so improved the problem of flicker.
The 4th embodiment
In LCD 300, driver element 320 comprises a data driver 324, and many control lines for example are many data lines, and each pixel of pel array 310 is separately corresponding to one of many data lines.Please refer to Fig. 7, it illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of the 4th example of colorimetric compensation.Wherein, pel array 310 is line inversion driving, so is not limited thereto, and can also be a counter-rotating, (1+2) some counter-rotating or 2 inversion driving.Pel array 310_42～310_48 in Fig. 7 is that remarked pixel array 310 is continuous on time shaft in regular turn, and hatched example areas is represented the pixel that quilt is compensated because look passed by image respectively.
Observing pel array 310_42～310_48 can learn, when pel array 310 is the line inversion driving, be coupled in the capable pixel of same data line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.For example, the polarity of the pixel that is compensated in the capable pixel 362 of pel array 310_42 reaches average, the polarity of the pixel that is compensated in the capable pixel 364 of pel array 310_44 reaches average, the polarity of the pixel that is compensated in the capable pixel 366 of pel array 310_46 reaches on average, and the polarity of the pixel that is compensated in the capable pixel 368 of pel array 310_48 reaches average.
Thus, even because produce deviation because of technologic factor easily as common voltage with reference to voltage for pel array 310, but the polarity with the pixel that is compensated in delegation's pixel reaches average, then Bu Chang overall brightness can trend towards equilibrium, make that human eye is difficult for discovering, so improved the problem of flicker.
The 5th embodiment
In LCD 300, driver element 320 comprises one scan driver 322, and many control lines for example are the multi-strip scanning line, and each pixel of pel array 310 is separately corresponding to one of multi-strip scanning line.Please refer to Fig. 8, it illustrates according to the polar switching collocation image of preferred embodiment of the present invention and passs the synoptic diagram of the 5th example of colorimetric compensation.Wherein, pel array 310 is row inversion driving, so is not limited thereto, and can also be a counter-rotating, (1+2) some counter-rotating or 2 inversion driving.Pel array 310_52～310_58 in Fig. 8 is that remarked pixel array 310 is continuous on time shaft in regular turn, and hatched example areas is represented the pixel that quilt is compensated because look passed by image respectively.
Observing pel array 310_52～310_58 can learn, when pel array 310 is the row inversion driving, be coupled in the row pixel of same sweep trace, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.For example, the polarity of the pixel that is compensated in the row pixel 372 of pel array 310_52 reaches average, the polarity of the pixel that is compensated in the row pixel 374 of pel array 310_54 reaches average, the polarity of the pixel that is compensated in the row pixel 376 of pel array 310_56 reaches on average, and the polarity of the pixel that is compensated in the row pixel 378 of pel array 310_58 reaches average.
Thus, even because produce deviation because of technologic factor easily as common voltage with reference to voltage for pel array 310, but the polarity of the pixel that is compensated in the same row pixel reaches average, then Bu Chang overall brightness can trend towards equilibrium, make that human eye is difficult for discovering, so improved the problem of flicker.
The present invention also proposes a kind of image and passs the colorimetric compensation method, is applied to a LCD.LCD comprises a pel array, many control lines and a driver element.Pel array has a plurality of pixels, and these control lines are coupled to these pixels, and driver element drives pel array by these control lines.The method comprises the following steps.Drive pel array, and the part pixel in the pel array is carried out image pass colorimetric compensation.Wherein, be coupled in the pixel of same control line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
Disclosed LCD of the above embodiment of the present invention and image are passed the colorimetric compensation method, have multiple advantages, below only enumerate the part advantage and are described as follows:
LCD of the present invention and image are passed the colorimetric compensation method, be by making same row pixel or with in delegation's pixel, the number of pixels that is compensated and have positive polarity is equal to the number of pixels that is compensated and have negative polarity, be tending towards evenly with purpose and the overall brightness that reaches balanced polarities, produce the flicker problem that deviation causes because of technologic factor easily so can overcome common voltage.
In sum, though the present invention with the preferred embodiment exposure as above, yet it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when doing various changes that are equal to or replacement.Therefore, protection scope of the present invention is when looking accompanying being as the criterion that the application's claim scope defined.
Claims (12)
1. LCD comprises:
One pel array has a plurality of pixels;
Many control lines are coupled to these pixels; And
One driver element is in order to drive this pel array by these control lines;
Wherein, when this pel array is driven, be coupled in these pixels of same control line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
2. LCD according to claim 1, it is characterized in that, this driver element comprises the one scan driver, these control lines are the multi-strip scanning line, when this pel array is driven, be coupled in this row pixel of same sweep trace, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
3. LCD according to claim 2 is characterized in that, this pel array is a counter-rotating, row counter-rotating, (1+2) some counter-rotating or 2 inversion driving.
4. LCD according to claim 1, it is characterized in that, this driver element comprises a data driver, these control lines are many data lines, when this pel array is driven, be coupled in this row pixel of same data line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
5. LCD according to claim 4 is characterized in that, this pel array is a counter-rotating, line counter-rotating, (1+2) some counter-rotating or 2 inversion driving.
6. LCD according to claim 1, it is characterized in that, this driver element comprises an one scan driver and a data driver, these control lines partly are the multi-strip scanning line, other these control lines partly are many data lines, each pixel of this pel array is separately corresponding to one of one of these sweep traces and these data lines, when this pel array is a some inversion driving, be coupled in this row pixel of same sweep trace, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation, and be coupled in this row pixel of same data line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
7. an image is passed the colorimetric compensation method, be applied to a LCD, this LCD comprises a pel array, many control lines and a driver element, this pel array has a plurality of pixels, these control lines are coupled to these pixels, this driver element drives this pel array by these control lines, and this method comprises:
Drive this pel array, and these pixels of the part in this pel array are carried out image pass colorimetric compensation;
Wherein, be coupled in these pixels of same control line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
8. image according to claim 7 is passed the colorimetric compensation method, it is characterized in that, this driver element comprises the one scan driver, and these control lines are the multi-strip scanning line, and this method also comprises:
Drive this pel array, and these pixels of the part in this pel array are carried out image pass colorimetric compensation;
Wherein, be coupled in this row pixel of same sweep trace, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
9. image according to claim 8 is passed the colorimetric compensation method, it is characterized in that, is with a counter-rotating, row counter-rotating, (1+2) some counter-rotating or 2 these pel arrays of inversion driving.
10. image according to claim 7 is passed the colorimetric compensation method, it is characterized in that, this driver element comprises a data driver, and these control lines are many data lines, and this method also comprises:
Drive this pel array, and these pixels of the part in this pel array are carried out image pass colorimetric compensation;
Wherein, be coupled in this row pixel of same data line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
11. image according to claim 10 is passed the colorimetric compensation method, it is characterized in that, be with a counter-rotating, line counter-rotating or, the counter-rotating of (1+2) point or 2 these pel arrays of inversion driving.
12. LCD image according to claim 7 is passed the colorimetric compensation method, it is characterized in that, this driver element comprises an one scan driver and a data driver, these control lines partly are the multi-strip scanning line, other these control lines partly are many data lines, each pixel of this pel array is to reach one of these data lines corresponding to one of these sweep traces separately, and this method also comprises:
With this pel array of an inversion driving, and these pixels of the part in this pel array are carried out image pass colorimetric compensation;
Wherein, be coupled in this row pixel of same sweep trace, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation, and be coupled in this row pixel of same data line, have positive polarity and be equal to the number of pixels that has negative polarity and passed colorimetric compensation by image by the number of pixels that image is passed colorimetric compensation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183221A (en) * | 2013-05-28 | 2014-12-03 | 群创光电股份有限公司 | Liquid crystal display and display method thereof |
| CN104424899A (en) * | 2013-08-30 | 2015-03-18 | 联咏科技股份有限公司 | Liquid crystal display and image color transferring compensation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231402B (en) * | 2007-01-26 | 2012-09-26 | 群康科技(深圳)有限公司 | Liquid crystal display panel |
| US7839413B2 (en) * | 2007-09-14 | 2010-11-23 | Himax Technologies Limited | Dithering method for an LCD |
| CN100568912C (en) * | 2008-01-31 | 2009-12-09 | 上海广电集成电路有限公司 | Dither matrix method to set up and corresponding frame rate control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183221A (en) * | 2013-05-28 | 2014-12-03 | 群创光电股份有限公司 | Liquid crystal display and display method thereof |
| CN104183221B (en) * | 2013-05-28 | 2016-12-28 | 群创光电股份有限公司 | Liquid crystal display and display packing thereof |
| CN104424899A (en) * | 2013-08-30 | 2015-03-18 | 联咏科技股份有限公司 | Liquid crystal display and image color transferring compensation method thereof |
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