CN101430871A - Driving method for field sequence LCD device - Google Patents
Driving method for field sequence LCD device Download PDFInfo
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- CN101430871A CN101430871A CNA2008102041617A CN200810204161A CN101430871A CN 101430871 A CN101430871 A CN 101430871A CN A2008102041617 A CNA2008102041617 A CN A2008102041617A CN 200810204161 A CN200810204161 A CN 200810204161A CN 101430871 A CN101430871 A CN 101430871A
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Abstract
The invention relates to a drive method of a field-sequential LCD device. The LCD device comprises a plurality of monochromatic backlight sources, each frame image is divided into a plurality of sub-fields, and a plurality of sub-fields are matched with the corresponding monochromatic backlight sources and sequentially displayed, wherein, the display time sequence of a plurality of sub-fields of two adjacent frames are different. The drive method of the field-sequential LCD device improves the color breakup of the field-sequential LCD device.
Description
Technical field
The present invention relates to the driving method of a kind of preface (Field Sequential) liquid crystal indicator, particularly relate to a kind of driving method that improves the field order LCD device of look segregation phenomenon.
Background technology
Along with the continuous progress of liquid crystal flat-panel display technique, liquid crystal display device just is applied to every field widely, such as mobile phone, desktop computer, televisor, notebook computer or the like.Traditional liquid crystal indicator adopts the mode of the synthetic pixel of red, green, blue three sub-pixels to realize colored the demonstration, and red, green, blue three looks are to realize by the color filter film.Occurred a kind of novel liquid crystal indicator at present, be called as field sequential liquid crystal and show.This device is made up of the liquid crystal display original paper of control light transmittance and the red, green, blue three look backlights that can independently control.In the demonstration time of a frame, it is backlight to light red, green, blue three looks in regular turn respectively, and matches with the liquid crystal display original paper that is placed on the front, realizes that coloured image shows.Be specially when red backlight is lighted, the red part in the picture signal is input to the liquid crystal display original paper; In like manner, when green, blue backlight is lighted, respectively green, danger signal are input to the liquid crystal display original paper.This kind method is called as the time mixed-color method, and traditional liquid crystal display is spacing color mixed method.
The advantage of field order LCD device has been to reduce the use of color filter film, has reduced cost, has improved the utilization factor of light simultaneously.But also have some problems perplexing a preface display mode at present, such as the look segregation phenomenon that exists in the preface of field.
For the ease of understanding the look segregation phenomenon, at first introduce the dynamic fuzzy phenomenon that exists in the conventional liquid crystal part, these two kinds of phenomenons are consistent in itself.Liquid crystal display device produces the fuzzy mechanism of dynamic image and is that its display mode is a kind of maintenance pattern (Hold type) rather than pulse mode.As shown in Figure 1, every to display image 11 through a frame, a mobile segment distance of image great-jump-forward.Shown in 12, at the end of former frame, image is in position 1. as tracking map in imaging on retina, back one frame initial period image great-jump-forward move to 2. position (because image is moving that display position is put).Because (amphiblestroid center resolution is than higher for the tracking effect of human eye, when observing moving object, can make image remain on amphiblestroid center by the motion of eyeball), image can be gradually from 2. position to 1. moving, the tracing process of human eye is continuous, rather than great-jump-forward.Each frame all can repeat a such process.And eyes have the brightness effect of integration in time, under the imaging of diverse location on the retina all can be by record.Finally, the width of image on retina broadens, and the marginal portion is because imaging time is short, and is dark than core, formed progressive fuzzy sideband, shown in perceptual image 13.
Liquid crystal display mode for the field preface, as shown in Figure 2, to display image 21, each frame is divided into three son fields of red, green, blue, the imaging of mobile object on retina as tracking map shown in 22, the right of image presents from redness to yellow (red, green addition) the color transition band to white (red, green, blue three form and aspect add) again, and the right of image presents from the blueness to the cyan (blue, green addition) again to the color transition band of white (red, green, blue three form and aspect add), this kind phenomenon is called as the look segregation phenomenon, shown in perceptual image 23.The look segregation phenomenon is compared with smeared out boundary more and can not be accepted by human eye, has had a strong impact on the dynamic image image quality, has restricted the development that field sequential liquid crystal shows.
In order to solve the look separation problem, some schemes have been proposed, in the industry such as black insertion technology, four look technology.Black insertion technology promptly in each frame, has the time of half to close backlight as shown in Figure 3.Black insertion technology also is used to improve the dynamic fuzzy effect in traditional liquid crystal display device, also can reduce the width that look separates in the look preface shows.But the realization difficulty of black insertion technology is quite high, and does not thoroughly solve the look separation problem.Usually use 60Hz to drive in liquid crystal display, if adopt look preface method, each frame is divided into 3 subframes again, then drives just to become 180Hz.If adopt black insertion technology again, then driving becomes 360Hz, and so high driving frequency is to be difficult to realize at present, and the response time of liquid crystal so fast yet.Four-colour process increases a yellow son as shown in Figure 4 on the basis of three of former red, green, blues, this method segregation phenomenon of checking colors has some improvement, but does not thoroughly deal with problems.
Summary of the invention
Technical matters to be solved by this invention provides a kind of driving method of field order LCD device, improves the look segregation phenomenon of field order LCD device.
The present invention solves the problems of the technologies described above the driving method that the technical scheme that adopts provides a kind of field order LCD device, this liquid crystal indicator comprises a plurality of monochromatic backlights, each two field picture is divided into a plurality of sons field, described a plurality of son corresponding monochromatic backlight of cooperation shows successively, wherein, the display timing generator difference of a plurality of sons of adjacent two frames field.
In the driving method of above-mentioned field order LCD device, described a plurality of monochromatic backlight is red, green and blue three look backlights, and each two field picture is divided into three son fields of red, green and blue, wherein, per three frames are cycling element, and first frame shows according to the red, green, blue sequential; Second frame shows according to green, blue, red sequential; The 3rd frame shows according to blue, red, green sequential; Perhaps per three frames are cycling element, and first frame shows according to the red, green, blue sequential; Second frame shows according to blue, red, green sequential; The 3rd frame shows according to green, blue, red sequential.
In the driving method of above-mentioned field order LCD device, described a plurality of monochromatic backlight is red, green, blue and the 4th look backlight, each two field picture is divided into red, green, blue and four son fields of the 4th look, wherein, per four frames are cycling element, and first frame shows according to red, green, blue, the 4th look sequential; Second frame shows according to green, blue, the 4th look, red sequential; The 3rd frame shows according to indigo plant, the 4th look, red, green sequential; The 4th frame shows according to the 4th look, red, green, blue sequential.
In the driving method of above-mentioned field order LCD device, described the 4th look backlight is yellow backlight.
The present invention contrasts prior art following beneficial effect: the driving method of field order LCD device provided by the invention, and utilize and on sequential, upset putting in order of a plurality of sons field, eliminate the look segregation phenomenon by the effect of human eye integral mean.Method provided by the invention has not only been improved the look segregation phenomenon, and its implementation is simple, need not to improve driving frequency, requires also less to response speed of liquid crystal.
Description of drawings
Fig. 1 is the fuzzy synoptic diagram that produces of dynamic image in the available liquid crystal display mode.
Fig. 2 is that the look segregation phenomenon produces synoptic diagram in the existing field sequential liquid crystal display technique.
Fig. 3 is that the existing black insertion technology that adopts improves look segregation phenomenon synoptic diagram in the preface demonstration.
Fig. 4 is that the existing four-colour process that adopts improves look segregation phenomenon synoptic diagram in the preface demonstration.
Fig. 5 is the first embodiment of the invention sequential chart and solves look segregation phenomenon synoptic diagram.
Fig. 6 is the second embodiment of the invention sequential chart.
Fig. 7 is the third embodiment of the invention sequential chart.
Among the figure:
11,21,51 display images
12,22,52 tracking map pictures
13,23,53 perceptual images
Embodiment
The invention will be further described below in conjunction with accompanying drawing and exemplary embodiments.
Embodiment one
Fig. 5 is the first embodiment of the invention sequential chart and solves look segregation phenomenon synoptic diagram.
See also Fig. 5, liquid crystal indicator provided by the invention comprises a plurality of monochromatic backlights, and each two field picture is divided into a plurality of sons field, and described a plurality of sons field cooperates corresponding monochromatic backlights to show successively, wherein, and the display timing generator difference of a plurality of sons of adjacent two frames field.Above-mentioned a plurality of monochromatic backlight can be physically independently a plurality of backlights, also can be single backlight, and polychromatic source is sent in timesharing independently.In first embodiment of the invention, field order LCD device is provided with three son fields in each frame period, and the color of son field is respectively red, green, blue.The display timing generator of three son fields is as described below: in first frame, show three son fields respectively by the red, green, blue order; In second frame, show three son fields respectively by green, blue, red order; In the 3rd frame, show three son fields respectively by blue, red, green order; Circulate successively by the display timing generator of first frame to the, three frames and to show all the other frames.
To display image 51, in first frame, show three son fields respectively by the red, green, blue order; In second frame, show three son fields respectively by green, blue, red order; In the 3rd frame, show three son fields respectively by blue, red, green order.Imaging on retina as tracking map shown in 52, even the position at the edge, limit of image still has red, green, blue three look imagings, therefore can not cause the look segregation phenomenon, only be that progressive on the gray scale arranged in the image border, last perceptual image 53 has thoroughly improved the look segregation phenomenon.
Embodiment two
Fig. 6 is the second embodiment of the invention sequential chart.
See also Fig. 6, second embodiment of the invention is identical with first embodiment, still is provided with three son fields in each frame period, and the color of son field is respectively red, green, blue.The display timing generator of three son fields is as described below: in first frame, show three son fields respectively by the red, green, blue order; In second frame, show three son fields respectively by blue, red, green order; In the 3rd frame, show three son fields respectively by green, blue, red order; Circulate successively by the display timing generator of first frame to the, three frames and to show all the other frames.The display timing generator of present embodiment is slightly different with first embodiment, but can reach same effect.
Embodiment three
Fig. 7 is the third embodiment of the invention sequential chart.
See also Fig. 7, third embodiment of the invention is different with first and second embodiment, and each is provided with four son fields in the frame period, and the color of son field is respectively red, green, blue, and the 4th look, wherein so-called the 4th look can be yellow or cyan or magenta or white etc.The display timing generator of four son fields is as described below: in first frame, show four son fields respectively by red, green, blue, the 4th look order; In second frame, show four son fields respectively by green, blue, the 4th look, red order; In the 3rd frame, show four son fields respectively by indigo plant, the 4th look, red, green order; In the 4th frame, show four son fields respectively by the 4th look, red, green, blue order; Circulate successively by the display timing generator of first frame to the, four frames and to show all the other frames.
In sum, the driving method of field order LCD device provided by the invention utilizes and upset putting in order of a plurality of sons field on sequential, eliminates the look segregation phenomenon by the effect of human eye integral mean.Method provided by the invention has not only been improved the look segregation phenomenon, and its implementation is simple, need not to improve driving frequency, requires also less to response speed of liquid crystal.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (7)
1, a kind of driving method of field order LCD device, this liquid crystal indicator comprises a plurality of monochromatic backlights, and each two field picture is divided into a plurality of sons field, and described a plurality of sons corresponding monochromatic backlight of cooperation show successively, it is characterized in that the display timing generator difference of a plurality of sons of adjacent two frames field.
2, the driving method of field order LCD device according to claim 1 is characterized in that, described a plurality of monochromatic backlights are red, green and blue three look backlights, and each two field picture is divided into three son fields of red, green and blue.
3, the driving method of field order LCD device according to claim 2 is characterized in that, per three frames are cycling element, and first frame shows according to the red, green, blue sequential; Second frame shows according to green, blue, red sequential; The 3rd frame shows according to blue, red, green sequential.
4, the driving method of field order LCD device according to claim 2 is characterized in that, per three frames are cycling element, and first frame shows according to the red, green, blue sequential; Second frame shows according to blue, red, green sequential; The 3rd frame shows according to green, blue, red sequential.
5, the driving method of field order LCD device according to claim 1 is characterized in that, described a plurality of monochromatic backlights are red, green, blue and the 4th look backlight, and each two field picture is divided into red, green, blue and four son fields of the 4th look.
6, the driving method of field order LCD device according to claim 5 is characterized in that, per four frames are cycling element, and first frame shows according to red, green, blue, the 4th look sequential; Second frame shows according to green, blue, the 4th look, red sequential; The 3rd frame shows according to indigo plant, the 4th look, red, green sequential; The 4th frame shows according to the 4th look, red, green, blue sequential.
According to the driving method of claim 5 or 6 described field order LCD devices, it is characterized in that 7, described the 4th look backlight is yellow backlight.
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| CNA2008102041617A CN101430871A (en) | 2008-12-08 | 2008-12-08 | Driving method for field sequence LCD device |
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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 |
| CN102280092A (en) * | 2011-08-02 | 2011-12-14 | 华映视讯（吴江）有限公司 | Display method of field order type liquid crystal display |
| CN102376278A (en) * | 2010-08-09 | 2012-03-14 | 瀚宇彩晶股份有限公司 | Image compensation apparatus and method thereof, and field color sequential method liquid crystal display |
| CN103198780A (en) * | 2012-01-06 | 2013-07-10 | 群康科技(深圳)有限公司 | Display device |
| CN104299576A (en) * | 2013-12-13 | 2015-01-21 | 天津三星电子有限公司 | Display driving method and device and displayer |
| CN105741818A (en) * | 2016-03-04 | 2016-07-06 | 友达光电股份有限公司 | Pixel unit and display method |
| CN105976768B (en) * | 2016-06-29 | 2018-10-19 | 深圳市华星光电技术有限公司 | The adjusting method of transparent display and transparent display |
| CN112562601A (en) * | 2020-12-21 | 2021-03-26 | 上海树泉信息技术有限公司 | Optimal backlight time calculation method and application |
| CN117133249A (en) * | 2023-08-31 | 2023-11-28 | 惠科股份有限公司 | Driving method of display device and display device |
-
2008
- 2008-12-08 CN CNA2008102041617A patent/CN101430871A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376278A (en) * | 2010-08-09 | 2012-03-14 | 瀚宇彩晶股份有限公司 | Image compensation apparatus and method thereof, and field color sequential method liquid crystal display |
| CN102376278B (en) * | 2010-08-09 | 2013-07-10 | 瀚宇彩晶股份有限公司 | Image compensation apparatus and method thereof, and field color sequential method liquid crystal display |
| 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 |
| CN102280092A (en) * | 2011-08-02 | 2011-12-14 | 华映视讯（吴江）有限公司 | Display method of field order type liquid crystal display |
| CN103198780B (en) * | 2012-01-06 | 2015-10-28 | 群康科技(深圳)有限公司 | Display device |
| CN103198780A (en) * | 2012-01-06 | 2013-07-10 | 群康科技(深圳)有限公司 | Display device |
| CN104299576A (en) * | 2013-12-13 | 2015-01-21 | 天津三星电子有限公司 | Display driving method and device and displayer |
| CN105741818A (en) * | 2016-03-04 | 2016-07-06 | 友达光电股份有限公司 | Pixel unit and display method |
| CN105741818B (en) * | 2016-03-04 | 2018-05-18 | 友达光电股份有限公司 | Pixel unit and display method |
| CN105976768B (en) * | 2016-06-29 | 2018-10-19 | 深圳市华星光电技术有限公司 | The adjusting method of transparent display and transparent display |
| CN112562601A (en) * | 2020-12-21 | 2021-03-26 | 上海树泉信息技术有限公司 | Optimal backlight time calculation method and application |
| CN117133249A (en) * | 2023-08-31 | 2023-11-28 | 惠科股份有限公司 | Driving method of display device and display device |
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Open date: 20090513 |