CN101656051A - Method for controlling ion aggregating direction in liquid crystal display panel - Google Patents
Method for controlling ion aggregating direction in liquid crystal display panel Download PDFInfo
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- CN101656051A CN101656051A CN200810117994A CN200810117994A CN101656051A CN 101656051 A CN101656051 A CN 101656051A CN 200810117994 A CN200810117994 A CN 200810117994A CN 200810117994 A CN200810117994 A CN 200810117994A CN 101656051 A CN101656051 A CN 101656051A
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Abstract
The invention relates to a method for controlling the ion aggregating direction in a liquid crystal display panel, which comprises the following steps: loading a display signal in the liquid crystal display panel; and forming a display area of the liquid crystal display panel by a marginal area and an effective display area, and loading a black display signal or a white display signal in the marginal area. The method applies the black display signal or the white display signal to the marginal area of the display area of the liquid crystal display panel when the liquid crystal display panel loads the display signal so that the marginal area is displayed with a black or white color, thereby making the ions in the liquid crystal display panel aggregated in the marginal area of the liquid crystal display panel, reducing the ion density of the effective display area, controlling the ion aggregating direction in the liquid crystal display panel, effectively improving afterimages, and providing a better display effect.
Description
Technical field
The present invention relates to field of liquid crystal display, especially a kind of method of controlling display panels intermediate ion gathering direction.
Background technology
Thin Film Transistor-LCD (TFT LCD) is widely used aspect much at TV and computer monitor etc. as a big main flow that shows market.Display panels is an ingredient main in the LCD, as shown in Figure 1, be the section of structure of display panels in the prior art, form by public electrode 11, pad (Bonding pad) 12, conducting resinl 13, envelope frame glue (sealant) 14, oriented layer 15, chock insulator matter 16, liquid crystal 17.The liquid crystal display existence is trailed, shortcomings such as reaction velocity is slow, image retention, and wherein, image retention has very important influence to the quality of LCD.Image retention be meant LCD long-time show a picture after, when picture switches to new picture, image that still can a residual last display frame.As shown in Figure 2, be black and white chessboard picture view in the prior art, the current display frame of LCD is black and white chessboard picture; As shown in Figure 3, for gray-scale value in the prior art is 127 gray scale picture view, represent that with the zone 1 that point is filled gray-scale value is 127 gray scale picture, picture switches to described gray scale picture; As shown in Figure 4, be actual displayed picture view in the prior art, in the figure, represent that with the zone 2 that denser point is filled gray-scale value is 192 gray scale picture, represent that with the zone 3 that more sparse point is filled gray-scale value is 64 gray scale picture, this shows image that still can a residual last black and white chessboard picture in the actual displayed picture.Because during the certain pattern of long time loading, in the liquid crystal panel ion can along direction of an electric field up and down substrate move, accumulate in and produce internal electric field above the alignment films, when more renewing figure, the ion that is gathered in oriented layer can't leave oriented layer at once, the remnant DC voltages that exists makes LCD still keep original image, and along with temperature raises, the image retention performance is obvious more.
Image retention can be produced and be summed up as two factors: have foreign ion in (1) liquid crystal panel; (2) make ion convergent collection in the time spent liquid crystal panel to the oriented layer of upper and lower base plate as extra electric field, and the oriented layer that when electric field is cancelled, can not speed away.First factor is main relevant with the material in the liquid crystal panel, for example is orientated liquid, liquid crystal, envelope frame glue, chock insulator matter, electrode etc.; Second factor mainly can be improved by number of ways such as material, driving, array design.
Image retention can greatly influence the quality of LCD, also is the research emphasis of each TFT LCD company.Mainly image retention is improved now: pixel design, array, Cell and driving from four aspects.Reduce the concentration of display panels intermediate ion by the selection of raw material, and then to improve image retention be a kind of very important approach.But the ion concentration in available liquid crystal material and the aligning film material is very low on the one hand, and it is very big further to reduce its concentration difficulty on this basis; Because liquid crystal material is the potpourri of a variety of liquid crystal, be difficult to the interaction of the various compositions of interaction wherein and oriented layer or envelope frame glue is analyzed, on the other hand so the difficulty of Fen Xiing is also very big in theory.
In brief, improve image retention from common research angle, bigger in the technical elements difficulty.Need develop to some extent from new direction and angle.
Summary of the invention
The present invention is directed to prior art and reduce the problem that display panels intermediate ion concentration difficulty is big, degree is limited, propose a kind of method that the display panels intermediate ion is assembled direction of controlling, the direction that control display panels intermediate ion is assembled is effectively improved image retention.
The invention provides a kind of method that the display panels intermediate ion is assembled direction of controlling, comprising:
At display panels loaded and displayed signal;
The viewing area of described display panels is made up of fringe region and effective viewing area, loads black display signal or white shows signal at described fringe region.
The present invention passes through at display panels loaded and displayed signal, fringe region in the viewing area of display panels applies black display signal or white shows signal, make described fringe region be shown as black or white, thereby make the fringe region of ion aggregation at display panels, effectively the viewing area ion concentration reduces, controlled the display panels intermediate ion and assembled direction, improved image retention effectively, the more display effect of high-quality is provided.
Description of drawings
Fig. 1 is the section of structure of display panels in the prior art;
Fig. 2 is a black and white chessboard picture view in the prior art;
Fig. 3 is 127 gray scale picture view for gray-scale value in the prior art;
Fig. 4 is an actual displayed picture view in the prior art;
Fig. 5 controls method embodiment one process flow diagram that the display panels intermediate ion is assembled direction for the present invention;
Fig. 6 assembles display frame synoptic diagram among the method embodiment one of direction for the present invention controls the display panels intermediate ion;
Fig. 7 assembles expectation display frame synoptic diagram among the method embodiment one of direction for the present invention controls the display panels intermediate ion;
Fig. 8 assembles actual displayed picture view among the method embodiment one of direction for the present invention controls the display panels intermediate ion;
Fig. 9 controls method embodiment two process flow diagrams that the display panels intermediate ion is assembled direction for the present invention;
Figure 10 assembles actual displayed picture view among the method embodiment two of direction for the present invention controls the display panels intermediate ion;
Figure 11 controls method embodiment three process flow diagrams that the display panels intermediate ion is assembled direction for the present invention;
Figure 12 assembles actual displayed picture view among the method embodiment three of direction for the present invention controls the display panels intermediate ion;
Figure 13 controls method embodiment four process flow diagrams that the display panels intermediate ion is assembled direction for the present invention;
Figure 14 assembles actual displayed picture view among the method embodiment four of direction for the present invention controls the display panels intermediate ion.
Embodiment
Below in conjunction with drawings and Examples the present invention is done detailed description further.
Studies show that in display panels, the reason that ion moves has two kinds:
(1) electric field action: when the time to the display panels added electric field, ion can move along the substrate of inclination angle to both sides of liquid crystal, research according to a lot of documents, this moving direction is all important with parallel direction of an electric field at vertical electric field, just ion moves to the orientation substrate of display panels on the one hand, simultaneously can moving up and down in liquid crystal panel.
(2) diffusion: in display panels, if the density of diverse location ion is variant, what ion can be very natural moves to little place from the big place of concentration.
There is a rule in the mutual relationship that degree that takes place by the research image retention and display panels apply voltage.Again referring to Fig. 2, white portion is different with black region institute making alive, for twisted-nematic (TwistedNematic, hereinafter to be referred as TN) mode liquid crystal display panel, when adopting normal white demonstration, black region voltage Vb＞white portion voltage Vw.The reason that image retention produces is the gathering of foreign ion and produce residual DC voltage, and relatively black region remnant DC voltages RDCb and white portion remnant DC voltages RDCw find RDCb＞RDCw.Be display panels when showing black and white chessboard picture shown in Figure 2, voltage is big more, and regional final residue DC voltage is also big more, and the big more just explanation of residual direct current has more ion to accumulate in the oriented layer of black region in the black and white chessboard picture shown in Figure 2.
The concentration of foreign ion generally changes not quite in time in display panels, can be considered as certain.Therefore if the ion aggregation in a zone obviously will inevitably cause the reduction of other regional ion concentration in the display panels, so the inventor adopts the present invention to control the display panels intermediate ion to assemble the method control display panels intermediate ion of direction and assemble direction.
The present invention controls the method embodiment one that the display panels intermediate ion is assembled direction
As shown in Figure 5, for the present invention controls method embodiment one process flow diagram that the display panels intermediate ion is assembled direction, specifically can comprise the steps:
The viewing area of step 12, described display panels is made up of fringe region and effective viewing area, loads black display signal or white shows signal at described fringe region.
Wherein, step 12 is specifically as follows following steps:
As shown in Figure 6, assemble display frame synoptic diagram among the method embodiment one of direction for the present invention controls the display panels intermediate ion, the effective viewing area of the rectangle of viewing area is a black and white chessboard picture, is shown as dark border around the viewing area.As shown in Figure 7, for controlling the display panels intermediate ion, the present invention assembles expectation display frame synoptic diagram among the method embodiment one of direction, when display frame is switched to as shown in Figure 3 gray scale picture by black and white chessboard picture, expectation obtains a gray scale display frame, wherein, the effective viewing area of the rectangle of viewing area is the gray scale picture, represents that with the zone 4 that point is filled gray-scale value is 127 gray scale picture, is shown as dark border around the viewing area; As shown in Figure 8, for controlling the display panels intermediate ion, the present invention assembles actual displayed picture view among the method embodiment one of direction, the effective viewing area of the rectangle of viewing area is the actual displayed picture after picture switches, in the figure, represent that with the zone 5 that denser point is filled gray-scale value is 220 gray scale picture, represent that with the zone 6 that more sparse point is filled gray-scale value is 35 gray scale picture, be shown as dark border around the viewing area, compare with actual displayed picture shown in Figure 4, the display effect of the effective viewing area of rectangle is better, improved image retention effectively, because by for a long time to loading the black display signal around the display panels viewing area, make the inner ion of display panels concentrate on display panels the viewing area around, the effective viewing area of rectangle ion concentration reduces, and is difficult for owing to ion aggregation produces image retention.
In the present embodiment, when display panels is deceived the liquid crystal panel of display mode for length, the signal that edge region applies is white shows signal, is shown as white around the viewing area, and described white shows signal is the ceiling voltage that data line uses in reality drives.
Present embodiment provides a kind of method that the display panels intermediate ion is assembled direction of controlling, by when the display panels loaded and displayed signal, around the viewing area of described display panels, apply high voltage, make described viewing area around be shown as black or white, thereby make ion in the display panels around the viewing area that accumulates in display panels under the described action of high voltage, the effective viewing area of rectangle density reduces, thereby controlled the display panels intermediate ion and assembled direction, improved image retention effectively, the more display effect of high-quality is provided.
The present invention controls the method embodiment two that the display panels intermediate ion is assembled direction
As shown in Figure 9, for the present invention controls method embodiment two process flow diagrams that the display panels intermediate ion is assembled direction, specifically can comprise the steps:
As shown in figure 10, for controlling the display panels intermediate ion, the present invention assembles actual displayed picture view among the method embodiment two of direction, the oval effectively viewing area of viewing area is the actual displayed picture, in the figure, represent that with the zone 7 that denser point is filled gray-scale value is 235 gray scale picture, represent that with the zone 8 that more sparse point is filled gray-scale value is 20 gray scale picture, be shown as dark border around the viewing area, compare with actual displayed picture shown in Figure 4, the display effect of oval effectively viewing area is better, improved image retention effectively, because by for a long time to loading high voltage around the display panels viewing area, make the inner ion of display panels concentrate on display panels the viewing area around, oval effectively viewing area ion concentration reduces, and is difficult for producing image retention owing to producing ion aggregation.
In the present embodiment, when display panels is deceived the liquid crystal panel of display mode for length, the signal that edge region applies is white shows signal, is shown as white around the viewing area, and described white shows signal is the ceiling voltage that data line uses in reality drives; Effectively the viewing area can also be circle or irregular figure.
Present embodiment provides a kind of method that the display panels intermediate ion is assembled direction of controlling, by when the display panels loaded and displayed signal, around the viewing area of described display panels, apply high voltage, make described viewing area around be shown as black or white, thereby make ion in the display panels around the viewing area that accumulates in display panels under the described action of high voltage, effectively viewing area density reduces, thereby controlled the display panels intermediate ion and assembled direction, improved image retention effectively, the more display effect of high-quality is provided.
The present invention controls the method embodiment three that the display panels intermediate ion is assembled direction
As shown in figure 11, for the present invention controls method embodiment three process flow diagrams that the display panels intermediate ion is assembled direction, specifically can comprise the steps:
As shown in figure 12, for controlling the display panels intermediate ion, the present invention assembles actual displayed picture view among the method embodiment three of direction, the effective viewing area of the rectangle of viewing area is the actual displayed picture, in the figure, represent that with the zone 9 that denser point is filled gray-scale value is 210 gray scale picture, represent that with the zone 10 that more sparse point is filled gray-scale value is 45 gray scale picture, two fringe regions up and down of viewing area are shown as the rectangle dark border, compare with actual displayed picture shown in Figure 4, the display effect of the effective viewing area of rectangle is better, improved image retention effectively, because load the black display signals by long-term two rectangular edges zones up and down to the viewing area of display panels, make the inner ion of display panels concentrate on two rectangular edges zones up and down of the viewing area of display panels, the effective viewing area of rectangle ion concentration reduces, and is difficult for producing image retention owing to producing ion aggregation.
In the present embodiment, when display panels is deceived the liquid crystal panel of display mode for length, the signal that edge region applies is white shows signal, and the coboundary and the lower limb of viewing area are shown as white, and described white shows signal is the ceiling voltage that data line uses in reality drives; Described coboundary and lower limb can also be irregular figure.
Present embodiment provides a kind of method that the display panels intermediate ion is assembled direction of controlling, by when the display panels loaded and displayed signal, coboundary and lower limb in the viewing area of described display panels apply high voltage, make the coboundary and the lower limb of viewing area be shown as black or white, thereby make the ion in the display panels under described action of high voltage, accumulate in two rectangular edges zones up and down of the viewing area of display panels, effectively viewing area density reduces, thereby controlled the display panels intermediate ion and assembled direction, improved image retention effectively, the more display effect of high-quality is provided.
The present invention controls the method embodiment four that the display panels intermediate ion is assembled direction
As shown in figure 13, for the present invention controls method embodiment four process flow diagrams that the display panels intermediate ion is assembled direction, specifically can comprise the steps:
As shown in figure 14, for controlling the display panels intermediate ion, the present invention assembles actual displayed picture view among the method embodiment four of direction, the effective viewing area of the rectangle of viewing area is the actual displayed picture, in the figure, represent that with the zone 19 that denser point is filled gray-scale value is 210 gray scale picture, represent that with the zone 20 that more sparse point is filled gray-scale value is 45 gray scale picture, two fringe regions are shown as the rectangle dark border about the viewing area, compare with actual displayed picture shown in Figure 4, the display effect of the effective viewing area of rectangle is better, improved image retention effectively, because load high voltage by long-term left hand edge and right hand edge zone to the viewing area of display panels, make the inner ion of display panels concentrate on display panels the viewing area about two rectangular edges zones, the effective viewing area of rectangle ion concentration reduces, and is difficult for producing image retention owing to producing ion aggregation.
In the present embodiment, when display panels is deceived the liquid crystal panel of display mode for length, the signal that edge region applies is white shows signal, and the left hand edge and the right hand edge of viewing area are shown as white, and described white shows signal is the ceiling voltage that data line uses in reality drives; Described left hand edge and right hand edge can also be irregular figure.
Present embodiment provides a kind of method that the display panels intermediate ion is assembled direction of controlling, by when the display panels loaded and displayed signal, rectangular edges zone, the left and right sides in the viewing area of described display panels respectively applies high voltage, make the left hand edge and the right hand edge of viewing area be shown as black or white, thereby make ion two rectangular edges zones about the viewing area that accumulates in display panels under the described action of high voltage in the display panels, effectively viewing area density reduces, thereby controlled the display panels intermediate ion and assembled direction, improved image retention effectively, the more display effect of high-quality is provided.
Need to prove, the fringe region of the viewing area of display panels be not limited to viewing area that the embodiment of the invention enumerates around, coboundary and lower limb or left hand edge and right hand edge, can also in four edges, upper and lower, left and right of viewing area any one, two or three edges.
It should be noted that at last: above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (9)
1, a kind of method of controlling display panels intermediate ion gathering direction is characterized in that comprising:
At display panels loaded and displayed signal;
The viewing area of described display panels is made up of fringe region and effective viewing area, loads black display signal or white shows signal at described fringe region.
2, control display panels intermediate ion according to claim 1 is assembled the method for direction, it is characterized in that described black display signal or white shows signal are specially the ceiling voltage that data line uses in reality drives.
3, control display panels intermediate ion according to claim 1 is assembled the method for direction, it is characterized in that, described display panels comprises the display panels of long white display mode and the display panels of long black display mode.
4, assemble the method for directions according to claim 1,2 or 3 described control display panels intermediate ions, it is characterized in that, described fringe region comprise described viewing area around.
5, control display panels intermediate ion according to claim 4 is assembled the method for direction, it is characterized in that, described effective viewing area is specially rectangle, ellipse or circular or irregular figure.
6, assemble the method for direction according to claim 1,2 or 3 described control display panels intermediate ions, it is characterized in that described fringe region comprises the coboundary and the lower limb of described viewing area.
7, control display panels intermediate ion according to claim 6 is assembled the method for direction, it is characterized in that described coboundary and lower limb are rectangle or irregular figure.
8, assemble the method for direction according to claim 1,2 or 3 described control display panels intermediate ions, it is characterized in that described fringe region comprises the left hand edge and the right hand edge of described viewing area.
9, control display panels intermediate ion according to claim 8 is assembled the method for direction, it is characterized in that described left hand edge and right hand edge are rectangle or irregular figure.
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| CN200810117994.XA CN101656051B (en) | 2008-08-19 | 2008-08-19 | Method for controlling ion aggregating direction in liquid crystal display panel |
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| CN200810117994.XA CN101656051B (en) | 2008-08-19 | 2008-08-19 | Method for controlling ion aggregating direction in liquid crystal display panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012145942A1 (en) * | 2011-04-27 | 2012-11-01 | 深圳市华星光电技术有限公司 | Driving method of liquid crystal display |
| CN103439814A (en) * | 2013-09-04 | 2013-12-11 | 深圳市华星光电技术有限公司 | Method and apparatus for improving residual image of liquid crystal display device |
| CN106896595A (en) * | 2017-03-21 | 2017-06-27 | 京东方科技集团股份有限公司 | A kind of liquid crystal display panel, liquid crystal display device and its control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4674287B2 (en) * | 2003-12-12 | 2011-04-20 | 奇美電子股▲ふん▼有限公司 | Image display device |
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2008
- 2008-08-19 CN CN200810117994.XA patent/CN101656051B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012145942A1 (en) * | 2011-04-27 | 2012-11-01 | 深圳市华星光电技术有限公司 | Driving method of liquid crystal display |
| CN102893205A (en) * | 2011-04-27 | 2013-01-23 | 深圳市华星光电技术有限公司 | Driving method of liquid crystal display |
| US8736530B2 (en) | 2011-04-27 | 2014-05-27 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Method for driving liquid crystal display |
| CN102893205B (en) * | 2011-04-27 | 2015-05-20 | 深圳市华星光电技术有限公司 | Driving method of liquid crystal display |
| CN103439814A (en) * | 2013-09-04 | 2013-12-11 | 深圳市华星光电技术有限公司 | Method and apparatus for improving residual image of liquid crystal display device |
| CN103439814B (en) * | 2013-09-04 | 2015-11-11 | 深圳市华星光电技术有限公司 | Liquid crystal indicator residual image improvement method and device |
| US9620068B2 (en) | 2013-09-04 | 2017-04-11 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Residual image removing method and liquid crystal display using same |
| CN106896595A (en) * | 2017-03-21 | 2017-06-27 | 京东方科技集团股份有限公司 | A kind of liquid crystal display panel, liquid crystal display device and its control method |
| US10649288B2 (en) | 2017-03-21 | 2020-05-12 | Beijing Boe Optoelectronics Technology Co., Ltd. | Liquid crystal display panel, liquid crystal display device and control method thereof |
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