CN101149904A - Backlight drive method - Google Patents
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- CN101149904A CN101149904A CNA2007101682845A CN200710168284A CN101149904A CN 101149904 A CN101149904 A CN 101149904A CN A2007101682845 A CNA2007101682845 A CN A2007101682845A CN 200710168284 A CN200710168284 A CN 200710168284A CN 101149904 A CN101149904 A CN 101149904A
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Abstract
The method for driving back lights comprising red light, blue light and green light includes: dividing a picture displaying area into four sub-areas, the green light is lighted twice respectively in two sub-areas of the first picture-displaying area; the three lights are lighted respectively in a first order in the four sub-areas of the first picture-displaying area, and lighted respectively in a second order in the second picture-displaying area. In which, the first order is different from the second order.
Description
[technical field]
The present invention system sees through the look segregation phenomenon that the arrangement that changes the light source opening sequence improves look preface method about a kind of method that is used to drive backlight.
[background technology]
Existing color sequential liquid crystal display technology is to utilize the method for time colour mixture to produce various color pictures.Shown in Figure 1A, its method is that a picture interval 11 is divided into first sub-range 111, second sub-range 113 and the 3rd sub-range 115, and opens red light source separately in first sub-range 111, green light source is opened in second sub-range 113 separately and open blue-light source separately in the 3rd sub-range 115.Open the light source order as mentioned above, open independent three-color light source equally in second picture sub-range 12 and the three-picture sub-range 13.
This kind mode uses the colour liquid crystal display device that spacing color mixed method constituted of colored filter to compare with tradition, and following several significant advantages are arranged: the firstth, and high-res; The secondth, can reduce the quantity of drive integrated circult wafer; The 3rd is to do the colour balance adjustment; The 4th is because R, G, B three light sources are to use separately in different time points, therefore needn't use colored filter, makes the formation simplification of liquid crystal layer, also can reduce the space.
Yet look preface method lcd technology still has the look segregation phenomenon that needs improvement.As shown in the figure, the light stimulus of three continuous sub-range times is incident to human eye, after the vision system effect, is enough to form colour picture (ColorFrame).Desirable imaging situation is: each picture element light stimulus in three sub-ranges that colour picture interval is comprised all is projected to the pairing same position of each picture element on the retina, makes that the color information of each picture element can be by the complete reproduction of vision.Examined by vision system if three sub-ranges that a coloured image is comprised, its corresponding picture element are incident upon diverse location on the retina and to know, then the observer will see that colour field separates the image of dislocation, and this promptly is called look and separates (CBU) phenomenon.Because the CBU edge of object formation colour band arrangement in image usually is as the rainbow striped, so CBU is called rainbow effect (Rainbow Effect) again.
Shown in figure Figure 1B, suppose that human eye follows the trail of the rectangular light 14 of white vertical in moving with identical speed, because the R of same picture, G, B sprite are incident upon human eye retina's position difference, can produce the rectangular light of white vertical edge look segregation phenomenon.Figure Fig. 1 C is anthropomorphic dummy's eyes retina integral result, can see the left end edge 151 of image 15 and the gradual layer color band of the non-white of right-hand member edge 153 appearance, and this is the look segregation phenomenon.
The look segregation phenomenon is seen the feel quality except reducing, and also has research report to point out, behind the display of watching the FS-FC pattern for a long time, also may cause dizzy sensation.Therefore, be necessary to eliminate or slow down the look separation effect that is present in existing color sequential liquid crystal display in fact.
[summary of the invention]
A purpose of the present invention is to solve the flicker problem that look preface method is followed, and effectively suppresses the look segregation phenomenon, uses the lifting picture brightness.According to this purpose, the invention provides a kind of method that drives backlight, this backlight has first light source, secondary light source and the 3rd light source, this driving method comprises: making up between three continuous pictures viewing areas is to light the cycle, wherein comprises four sub-ranges between each those picture-display-region at least; And order is lighted this first light source, this secondary light source and the 3rd light source in this ignition period, makes this first light source, this secondary light source and the 3rd light source continue in this ignition period and is presented in those sub-ranges.
The present invention provides a kind of method that drives backlight in addition, this backlight has four kinds of light sources, be respectively red light source, blue-light source, green light source and compensation colour light source, this driving method comprises: will be divided into four sub-ranges between between first picture-display-region, between second picture-display-region and three-picture viewing area respectively; And between this first picture-display-region in, according to first order in bright these the four kinds of light sources of these four sub-range mid points, between this second picture-display-region in according to second order light these four kinds of light sources and between this three-picture viewing area in light this four kinds of light sources according to the 3rd order; Wherein this first order, this second order and the 3rd order are different each other.
The present invention provides a kind of method that drives backlight in addition, this backlight has three kinds of light sources, be respectively red light source, blue-light source and green light source, this driving method comprises: with being divided into four sub-ranges between a picture-display-region, light green light source twice respectively at two sub-ranges between this first picture-display-region; And four sub-ranges will be divided into respectively between first picture-display-region and between second picture-display-region; In between this first picture-display-region, light this three kinds of light sources in bright these the three kinds of light sources of these four sub-range mid points and between this second picture-display-region according to second order according to first order; Wherein this first order is different each other with this second order.
[description of drawings]
Figure 1A is the colour field Pareto diagram of traditional look preface method.
Figure 1B is the rectangular light synoptic diagram of white vertical in the black picture.
Fig. 1 C is for adopting the rectangular light displayed map of white vertical on the traditional colour preface method simulation retina.
Fig. 2 A is the colour field Pareto diagram of first embodiment of the invention.
Fig. 2 B is the rectangular light displayed map of white vertical on the simulation retina of first embodiment of the invention.
Fig. 3 A is the colour field Pareto diagram of second embodiment of the invention.
Fig. 3 B is for adopting the rectangular light displayed map of white vertical on the second embodiment of the invention simulation retina.
Fig. 4 is the colour field Pareto diagram of third embodiment of the invention.
Fig. 5 is the colour field Pareto diagram of fourth embodiment of the invention.
Fig. 6 is the colour field Pareto diagram of fifth embodiment of the invention.
Fig. 7 is the colour field Pareto diagram of sixth embodiment of the invention.
[embodiment]
The present invention adopts change colour field order: the order of the colour field in each image is changed arbitrarily, make the order of look separation striped no longer fixing, and destroy look and separate the periodicity that striped occurs, reduce the degree that arouses attention.
When the green color sub-field frequency of occurrences is lower than 50Hz, the phenomenon of human eye meeting perception flicker.Under the principle of not destroying the complementation of look preface method edge color, go to compensate human eye perception scintillation by the frequency that increases sub-colour field or insert white sub-colour field, can effectively suppress the look segregation phenomenon and increase picture brightness.Below with the detailed explanation embodiments of the present invention.
In the middle of first embodiment, be depicted as a kind of driving method as Fig. 2 A, be used for a backlight (figure does not demonstrate), this backlight can provide the three primary colors light source of a red light source, a green light source and a blue-light source, driving method is shown in 2A figure, make up between three continuous picture-display-regions, be respectively between first picture-display-region between 21, second picture-display-region 22 and the three-picture viewing area between 23 be the cycle of lighting 20.At least comprise four sub-ranges between each picture-display-region, in order to light the three primary colors light source in regular turn.21 light red light source in regular turn, light green light source in second sub-range 213, light blue-light source in the 3rd sub-range 215 and light red light source in the 4th sub-range 217 between first picture-display-region in first sub-range 211; 22 continue between first picture-display-region 21 orders are lighted green light source in regular turn, light blue-light source in second sub-range 223, light red light source in the 3rd sub-range 225 and are lighted green light source in the 4th sub-range 227 between second picture-display-region in first sub-range 221; 23 continue between second picture-display-region 22 orders are lighted blue-light source in regular turn, light 233 red light sources in second sub-range, light green light source in the 3rd sub-range 235 and are lighted blue-light source in the 4th sub-range 237 between the three-picture viewing area in first sub-range 231.Between showing with three pictures is that unit circulates repeatedly.Traditionally, the frequency between each picture-display-region is 60Hz, so the same green color sub-field frequency of occurrences is 60Hz, but according to present embodiment, frequency between same each picture-display-region is 60Hz, but the frequency in each sub-range is 240Hz, and then the green color sub-field frequency of occurrences of being separated by is 80Hz.In the present embodiment mode, the picture transformation rate is accelerated can increase the green light source frequency of occurrences.
According to experimental result, shown in Fig. 2 B, the left end edge 251 that can see image 25 and the gradual layer color zone piece area of the non-white at right-hand member edge 253 are little than 151 and 153 the area of Fig. 1 C, learn that its look segregation phenomenon can lower.Because this light source opening sequence is the appearance of R, G, B rule, but not out of order arrangement mode, but because of opening the light source difference in first sub-range between the adjacent pictures viewing area, cause unlatching light source order between each adjacent pictures viewing area, to be not quite similar, so also still have the edge look to separate the effect of compensation.
Be depicted as according to a kind of driving method of inventing second embodiment as the 3rd figure, be used for a backlight (figure does not demonstrate), this backlight can provide a red light source, a green light source, a blue-light source and a compensation colour light source, between three continuous picture-display-regions, be respectively between first picture-display-region between 31, second picture-display-region 32 and the three-picture viewing area between 33 be the cycle of lighting 30.31 of first picture-display-regions are lighted red light source in regular turn, light green light source in second sub-range 313, light blue-light source in the 3rd sub-range 315 and are lighted white light source in the 4th sub-range 317 in first sub-range 311, in this embodiment, use white light source to be the compensation colour light source, the compensation white light can increase the brightness of display; 32 light green light source in regular turn, light blue-light source in second sub-range 323, light red light source in the 3rd sub-range 325 and light white light source in the 4th sub-range 327 between second picture-display-region in first sub-range 321; 33 continue between second picture-display-region 32 orders are lighted blue-light source in regular turn, light red light source in second sub-range 333, are lighted white light source in the 3rd sub-range 335 green light sources and in the 4th sub-range 337 between the three-picture viewing area in first sub-range 331.
In order to make the more level and smooth effect of generation visually, being that unit circulates repeatedly between three picture-display-regions.Between second picture-display-region, open the order of color of light between 32, the 3rd picture-display-regions in 33 in change first, second, third sub-range, it is different to make first, second, third sub-range between its this three picture-display-regions open the order of color of light, to reach the effect of color sequence compensation.
By experimental result, shown in Fig. 3 B, can see that the left end edge 351 of image 35 is little than 151 and 153 areas of Fig. 1 C with the gradual layer color zone piece area of the non-white at right-hand member edge 353, significantly its look segregation phenomenon can lower.
In the 3rd embodiment, interchangeable compensates putting in order of colour light source and three sub-ranges.As shown in Figure 4,41 light red light source in regular turn in first sub-range 411, light green light source in second sub-range 413, light white light source in the 3rd sub-range 415 and light blue-light source between first picture-display-region in the 4th sub-range 417; 42 light green light source in regular turn in first sub-range 421 between second picture-display-region, light blue-light source in second sub-range 423, light white light source in the 3rd sub-range 425 and in ground four sub-ranges 427 light red light source; 43 continue between second picture-display-region 42 orders between the three-picture viewing area, light blue-light source in regular turn in first sub-range 431, light red light source in second sub-range 433, light white light source in the 3rd sub-range 435 and in ground four sub-ranges 437 light green light source.
In the 4th embodiment, the compensation color of light can be mixed light, and adopting mixed light in the present embodiment is blue or green brown, and blue or green brown is the mixed light of red light source and green light source.As shown in Figure 5,51 light red light source in regular turn in first sub-range 511 between first picture-display-region, light green light source in second sub-range 513, light blue-light source in the 3rd sub-range 515 and in ground four sub-ranges 517 light blue or green brown light source; 52 light green light source in regular turn in first sub-range 521 between second picture-display-region, light blue-light source in second sub-range 523, light red light source in the 3rd sub-range 525 and in ground four sub-ranges 527 light blue or green brown light source; 53 continue between second picture-display-region 52 orders are lighted blue-light source in regular turn, light red light source in second sub-range 533, light green light source in the 3rd sub-range 535 and are lighted blue or green brown light source in the 4th sub-range 537 between the three-picture viewing area in first sub-range 531.
In the middle of the 5th embodiment, increase the green light source frequency of occurrences, implement as followsly, 61 light red light source in regular turn in first sub-range 611 between first picture-display-region as shown in Figure 6, light green light source in second sub-range 613, light blue-light source in the 3rd sub-range 615 and in ground four sub-ranges 617 light green light source; 62 light green light source in regular turn, light red light source in second sub-range 623, light green light source in the 3rd sub-range 625 and light blue-light source in the 4th sub-range 627 between second picture-display-region in first sub-range 621; Three-picture viewing area 63 lights blue-light source in regular turn in first sub-range 631, light green light source in second sub-range 633, light red light source in the 3rd sub-range 635 and in ground four sub-ranges 637 light green light source; 64 light green light source in regular turn, light blue-light source in second sub-range 643, light green light source in the 3rd sub-range 645 and light red light source in the 4th sub-range 647 between the 4th picture-display-region in first sub-range 641.
So increase the frequency that green light source occurs, the phenomenon of human eye perception flicker is lowered.And in order to make the more level and smooth effect of generation visually, be that unit circulates repeatedly between showing with four pictures.Open the order of color of light between second, third and the 4th picture-display-region in change first, second, third, fourth sub-range, it is different to make first, second, third, fourth sub-range between its this three picture-display-regions open the order of color of light, reaching the effect of color sequence compensation, and effective color difference eliminating phenomenon.
In the 6th embodiment, as shown in Figure 7,71,72 is to light the cycle between can two picture-display-regions, and 71 light red light source in regular turn, light green light source in second sub-range 713, light blue-light source in the 3rd sub-range 715 and light green light source in the 4th sub-range 717 between first picture-display-region in first sub-range 711; 72 light green light source in regular turn in first sub-range 721 between second picture-display-region, light red light source in second sub-range 723, light green light source in the 3rd sub-range 725 and in ground four sub-ranges 727 light blue-light source.
As described above, the look segregation phenomenon is that the position of the corresponding picture element of each colour field is projected to amphiblestroid diverse location, and the observed person discovers.
In sum, distinguish the sub-range of a plurality of times between a picture-display-region, switch one monochromatic source in the time in each sub-range.When the sub-range of opening green light source is lower than 50Hz as if the frequency of occurrences, the phenomenon that the human eye vision perception has flicker produces, therefore in the present invention, open the sub-range of green light source by increase, or the sub-range frequency of white light source is opened in increase, can solve the problem of compensation human eye perception flicker, and can not destroy the principle of edge color complementation, and can effectively suppress the look segregation phenomenon and increase picture brightness.
In addition, except that the compensation colour light source, make a variation and open the order of R, G, B three-color light source between each picture-display-region, make that the three-color light source order between adjacent two picture-display-regions is different, can make picture reach more smooth-going effect.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any general skill person who has the knack of the technical field of the invention; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (20)
1. method that drives backlight, this backlight provides one first light source, a secondary light source and one the 3rd light source, and this method comprises:
Making up between three continuous pictures viewing areas is to light the cycle, wherein comprises four sub-ranges between each those picture-display-region at least; And
Order is lighted this first light source, this secondary light source and the 3rd light source in this ignition period, makes this first light source, this secondary light source and the 3rd light source continue in this ignition period and is presented in those sub-ranges.
2. method according to claim 1 is characterized in that, this first light source is a red light source, and this secondary light source is a green light source, and the 3rd light source is a blue-light source.
3. method according to claim 1, it is characterized in that, each those ignition period comprises between one first picture-display-region in regular turn, between between one second a picture-display-region and three-picture viewing area, and comprise one first sub-range, one second sub-range, one the 3rd sub-range, and one the 4th sub-range between these indivedual picture-display-regions in regular turn, wherein this backlightly comes from this first sub-range and same light source is lighted in the 4th sub-range.
4. method according to claim 3 is characterized in that, first sub-range between this first picture-display-region and the 4th sub-range, and this backlight is lighted this first light source.
5. method according to claim 3 is characterized in that, first sub-range between this second picture-display-region and the 4th sub-range, and this backlight is lighted this secondary light source.
6. method according to claim 3 is characterized in that, first sub-range between this three-picture viewing area and the 4th sub-range, and this backlight is lighted the 3rd light source.
7. method according to claim 1 is characterized in that, lights this red light source, this green light source, this blue-light source and this red light source between this first picture-display-region in regular turn.
8. method according to claim 1 is characterized in that, lights this green light source, this blue-light source, this red light source and this green light source between this second picture-display-region in regular turn.
9. method according to claim 1 is characterized in that, lights this blue-light source, this red light source, this green light source and this blue-light source between this three-picture viewing area in regular turn.
10. method that drives backlight, this backlight provide a red light source, a blue-light source, a green light source and compensation colour light source, and this method comprises:
To be divided into four sub-ranges between between one first picture-display-region, between one second a picture-display-region and three-picture viewing area respectively; And
Among between this first picture-display-region, according to first order in bright these the four kinds of light sources of these four sub-range mid points, between this second picture-display-region in according to second order light these four kinds of light sources and between this three-picture viewing area in light this four kinds of light sources according to the 3rd order;
Wherein this first order, this second order and the 3rd order are different each other.
11. method according to claim 10 is characterized in that, this compensation colour light source is a white light source.
12. method according to claim 10 is characterized in that, this first order is for lighting this red light source, this green light source, this blue-light source and this white light source in regular turn; This second order is for lighting this green light source, this blue-light source, this red light source and this white light source in regular turn; And the 3rd order is for lighting this green light source, this red light source, this blue-light source and this white light source in regular turn.
13. method according to claim 10 is characterized in that, this first order is for lighting this red light source, this green light source, this white light source and this blue-light source in regular turn; Second order is for lighting this green light source, this blue-light source, this white light source and this red light source in regular turn; The 3rd order is for lighting this green light source, this red light source, this white light source and this blue-light source in regular turn.
14. method according to claim 10 is characterized in that, this compensation colour light source is this red light source, this blue-light source and this green light source two a color mixing light source wherein.
15. method according to claim 10 is characterized in that, this compensation colour light source is a green light source.
16. a method that drives backlight, this backlight provide a red light source, a blue-light source and a green light source, this method comprises:
To be divided into four sub-ranges between one first picture-display-region and between one second picture-display-region respectively, wherein two sub-ranges of this green light source between each those picture-display-region are lighted; And
In between this first picture-display-region, light this four kinds of light sources in bright these the four kinds of light sources of these four sub-range mid points and between two second picture-display-regions according to second order according to first order;
Wherein this first order is different each other with this second order.
17. method according to claim 16 is characterized in that, between this first picture-display-region and between this second picture-display-region, the sub-range of lighting green light source is non-conterminous mutually.
18. method according to claim 16 is characterized in that, this first order is for lighting this red light source, this green light source, this blue-light source and this green light source in regular turn; This second order is for lighting this green light source, this red light source, this green light source and this blue-light source in regular turn.
19. method according to claim 16 is characterized in that, this method comprises in addition:
Make up between three continuous these first picture-display-regions, between this second picture-display-region, between a three-picture viewing area and one the 4th picture display cycle was the cycle of lighting; And
In between this three-picture viewing area, light this three kinds of light sources, and between the 4th picture-display-region, light this three kinds of light sources, and this first order, this second order, the 3rd order, the 4th order are different each other according to the 4th order according to the 3rd order.
20. method according to claim 19, it is characterized in that, the 3rd order is lighted this red light source, this green light source, this blue-light source and this green light source in regular turn between this picture-display-region, and the 4th order is lighted this green light source, this red light source, this green light source and this blue-light source in regular turn between this picture-display-region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101682845A CN101149904A (en) | 2007-11-01 | 2007-11-01 | Backlight drive method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101682845A CN101149904A (en) | 2007-11-01 | 2007-11-01 | Backlight drive method |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101159389A Division CN102629450A (en) | 2007-11-01 | 2007-11-01 | Method for driving backlight source |
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| CN101149904A true CN101149904A (en) | 2008-03-26 |
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| CNA2007101682845A Pending CN101149904A (en) | 2007-11-01 | 2007-11-01 | Backlight drive method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163401A (en) * | 2011-02-25 | 2011-08-24 | 福建华映显示科技有限公司 | Method for controlling color field switching frequency of color sequence display |
| CN103258507A (en) * | 2012-02-16 | 2013-08-21 | 瀚宇彩晶股份有限公司 | Driving method of liquid crystal display |
| CN103390390A (en) * | 2012-05-10 | 2013-11-13 | 刘鸿达 | Displaying and controlling method for displayer |
| CN105654918A (en) * | 2016-02-19 | 2016-06-08 | 友达光电股份有限公司 | Display method and display |
| US9373304B2 (en) | 2012-04-20 | 2016-06-21 | Hung-Ta LIU | Display control method for adjusting color light source corresponding to color data |
| CN105741786A (en) * | 2016-01-27 | 2016-07-06 | 努比亚技术有限公司 | Method of eliminating display screen jitter and mobile terminal |
| CN108206016A (en) * | 2018-01-02 | 2018-06-26 | 京东方科技集团股份有限公司 | Pixel unit and its driving method, display device |
| CN109509436A (en) * | 2018-12-11 | 2019-03-22 | 惠科股份有限公司 | Driving method and driving device of display panel and display device |
| CN110687737A (en) * | 2019-10-31 | 2020-01-14 | 兴光谱科技成都有限公司 | Sequential display projector RGB three-primary-color sequencing method and projector |
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2007
- 2007-11-01 CN CNA2007101682845A patent/CN101149904A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163401B (en) * | 2011-02-25 | 2013-11-06 | 福建华映显示科技有限公司 | Method for controlling color field switching frequency of color sequence display |
| CN102163401A (en) * | 2011-02-25 | 2011-08-24 | 福建华映显示科技有限公司 | Method for controlling color field switching frequency of color sequence display |
| CN103258507A (en) * | 2012-02-16 | 2013-08-21 | 瀚宇彩晶股份有限公司 | Driving method of liquid crystal display |
| CN103258507B (en) * | 2012-02-16 | 2015-07-01 | 瀚宇彩晶股份有限公司 | Driving method of liquid crystal display |
| US9373304B2 (en) | 2012-04-20 | 2016-06-21 | Hung-Ta LIU | Display control method for adjusting color light source corresponding to color data |
| CN103390390A (en) * | 2012-05-10 | 2013-11-13 | 刘鸿达 | Displaying and controlling method for displayer |
| CN105741786A (en) * | 2016-01-27 | 2016-07-06 | 努比亚技术有限公司 | Method of eliminating display screen jitter and mobile terminal |
| CN105654918A (en) * | 2016-02-19 | 2016-06-08 | 友达光电股份有限公司 | Display method and display |
| CN105654918B (en) * | 2016-02-19 | 2017-12-22 | 友达光电股份有限公司 | Display method and display |
| CN108206016A (en) * | 2018-01-02 | 2018-06-26 | 京东方科技集团股份有限公司 | Pixel unit and its driving method, display device |
| CN109509436A (en) * | 2018-12-11 | 2019-03-22 | 惠科股份有限公司 | Driving method and driving device of display panel and display device |
| CN109509436B (en) * | 2018-12-11 | 2021-01-08 | 惠科股份有限公司 | Driving method and driving device of display panel and display device |
| CN110687737A (en) * | 2019-10-31 | 2020-01-14 | 兴光谱科技成都有限公司 | Sequential display projector RGB three-primary-color sequencing method and projector |
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