CN102005174B - Method for reducing image ghosting - Google Patents
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- CN102005174B CN102005174B CN 201010618545 CN201010618545A CN102005174B CN 102005174 B CN102005174 B CN 102005174B CN 201010618545 CN201010618545 CN 201010618545 CN 201010618545 A CN201010618545 A CN 201010618545A CN 102005174 B CN102005174 B CN 102005174B
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Abstract
The invention discloses a method for reducing image ghosting, wherein an image is divided into a plurality of areas. The method comprises the steps of: generating a plurality of output feedback signals which are respectively used for regulating a plurality of conduction periods of the plurality of scanning lines corresponding to the areas; outputting the output feedback signals to a gate driver so as to generate a plurality of scanning signals corresponding to the areas; and driving the plurality of scanning lines corresponding to the areas by the gate driver according to the scanning signals.
Description
Technical field
The invention relates to a kind of method for reducing image ghosting, be particularly to a kind of method that reduces the ghost image of zones of different in picture.
Background technology
Progress along with display technique, the actuating speed of liquid crystal display is also more and more faster, wherein for the renewal speed of picture, higher requirement is arranged with look order method (Color Sequential) display technique and solid (Three-Dimension, 3D) display technique again.
Lift look order method display technique, color sequential display does not use colored filter, but use RGB R/G/B three coloured light, sequentially scanned in the R colour field, lighted ruddiness, then it is complete to scan the G colour field, light green glow, scan again at last the B colour field, rearmost point light blue light, the reproduction of always sequentially lighting to reach color like this.But compare with the conventional ADS driving mode, article one, the time of sweep trace (Gate line) conducting just shortens manyfold, for example: frame per second of tradition is (frame rate) 60 hertz of (Hz) (cycle is 16.67ms approximately), and the time of a scan signal line conducting is about=16.67/ scan signal line sum.And when driving with look order method, the time of a scan signal line conducting is about=16.67/ (colour field sum (three colour field picture R, G, B) * scan signal line sum) at least.
When the original shortening of the time of sweep trace conducting ratio manyfold, the resistance capacitance of sweep trace or data line (Source lines) postpones (RC delay) phenomenon will be caused ghost image (double image) or be called ghost (ghost image) picture.Please refer to Fig. 1, what Fig. 1 illustrated known display device postpones the schematic diagram of the ghost phenomena produce because of RC.Take the display device 10 of resolution 1600 * 900 as example, display device 10 is used for showing a picture 100.This display device 10 has data line (not icon) and 900 horizontal sweep traces (not icon) of a gate pole driver 200, a plurality of source electrode driver 300,1600 homeotropic alignments.
Please refer to Fig. 1 and Fig. 2 A, Fig. 2 A is the signal mode schematic diagram of a-quadrant in Fig. 1, and wherein transverse axis is the time, and the longitudinal axis is level.For clearly demonstrating, the scanning-line signal of frenquency signal (CLK), data (Data) signal, undelayed scanning-line signal and delay is illustrated respectively in different upright positions.when the a-quadrant of this picture 100 (upper right corner dashed region), because the signal of sweep trace is that left end by display device is toward the right-hand member transmission, therefore the RC at display frame 100 right-hand members postpones comparatively serious, when causing the scanning-line signal of N bar (scope of N is 1 to 899) also not turn-off fully, just begin to write the data-signal of N+1 bar scanning-line signal, the liquid crystal capacitance that causes being positioned at N bar sweep trace has been charged to the data-signal of N+1 bar scanning-line signal, this situation just is easy to cause image frame that upper ghost phenomena is arranged, that also indistinctly sees on " A " as shown in Figure 1 is unclear and be located at image on present image to one.
Please refer to Fig. 1 and Fig. 2 B, Fig. 2 B is the signal mode schematic diagram in B zone in Fig. 1.When B zone (lower left corner dashed region), because shorten sweep time, it is more harsh that the related relation that has influence on data line and sweep trace becomes.When postponing to cause data-signal, the RC of data line is sent to the delay of bottom by the upper end of display device, as shown in the data-signal that postpones.The front end of the sweep trace of N+1 has write the data of N bar delay conversion, this situation just is easy to cause image in display frame 100, lower ghost phenomena to be arranged, and that also indistinctly sees on " B " as shown in Figure 1 is unclear and be located at image under present image to one.
No matter be that upper ghost image or lower ghost image have all caused audience's discomfort.Therefore, need badly at present and propose a kind of method for reducing image ghosting, to address the above problem.
Summary of the invention
The object of the present invention is to provide a kind of method for reducing image ghosting, it can input different output enable signals and/or different latch data signals by subregion, to reduce the ghost image of picture zones of different.
In order to achieve the above object, the first preferred embodiment of the present invention provides a kind of method for reducing image ghosting, this picture is to be divided into plural zone, and be to be provided by a display device, this display device has a gate pole driver, plurality of sources driver, a plurality of data lines and a plurality of sweep traces, the method comprises: produce a plurality of output enable signals, those output enable signals are for a plurality of conduction periods of those sweep traces of adjusting corresponding those zones; Export those output enable signals to this gate pole driver, to produce a plurality of scanning signals in corresponding those zones; And this gate pole driver drives those sweep traces in those corresponding zones according to those scanning signals.
In the first preferred embodiment of the present invention, those output enable signals are for the conduction period of those sweep traces that shorten those zones, for example delay conducting and/or turn-off ahead of time those sweep traces.In one implemented the sample attitude, each output enable signal was the conduction period for all sweep traces in a corresponding zone of adjusting those zones.Implement in the sample attitude at another, each output enable signal is for the wherein conduction period of the sweep trace of a correspondence of adjusting those sweep traces.
In the first preferred embodiment of the present invention, the method further comprises: produce a plurality of latch data signals, those latch data signals are for the plurality of data output time of those data lines of adjusting those zones; Export those latch data signals to those source electrode drivers, to produce a plurality of picture element data signals in corresponding those zones; And those source electrode drivers drive those data lines in those corresponding zones according to those picture element data signals.Particularly, adjusting those data output times is to delay those data output times.
In addition, the second preferred embodiment of the present invention separately provides a kind of method for reducing image ghosting, this picture is to be divided into plural zone, and be to be provided by a display device, this display device has a gate pole driver, plurality of sources driver, a plurality of data lines and a plurality of sweep traces, the method comprises: produce a plurality of latch data signals, those latch data signals are for the plurality of data output time of those data lines of adjusting those zones; Export those latch data signals to those source electrode drivers, to produce a plurality of picture element data signals in corresponding those zones; And those source electrode drivers drive those data lines in corresponding those zones according to those picture element data signals.Wherein adjusting those data output times is to delay those data output times.
In the second preferred embodiment of the present invention, those zones are a plurality of vertical area for this picture.Each source electrode driver is to adjust all data lines of corresponding region according to latch data signal corresponding in those latch data signals.
In the second preferred embodiment of the present invention, the method further comprises: produce a plurality of output enable signals, those output enable signals are used for adjusting respectively a plurality of conduction periods of those sweep traces in corresponding those zones; Export those output enable signals to this gate pole driver, to produce a plurality of scanning signals in corresponding those zones; And this gate pole driver drives those sweep traces in corresponding those zones according to those scanning signals.
Similarly, those output enable signals are the conduction periods for those sweep traces that shorten those zones.In one implemented the sample attitude, each output enable signal was the conduction period for the sweep trace in a corresponding zone of adjusting those zones.Implement in the sample attitude at another, each output enable signal is for the wherein conduction period of the sweep trace of a correspondence of adjusting those sweep traces.
According to the method for reducing image ghosting of the present invention, it utilizes the different output enable signal of subregion input and/or different latch data signals, improved the ghost image that known sweep trace and data line cause because of the RC delay at different picture areas, adjustable more meticulous for the image of picture zones of different.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and coordinate appended graphicly, be described in detail below.
Description of drawings
What Fig. 1 illustrated known display device postpones the schematic diagram of the ghost phenomena produce because of RC.
Fig. 2 A is the signal mode schematic diagram of a-quadrant in Fig. 1.
Fig. 2 B is the signal mode schematic diagram in B zone in Fig. 1.
Fig. 3 illustrates the display device of implementing the first embodiment.
Fig. 4 is the process flow diagram according to the method that is used for the minimizing image ghosting of the first preferred embodiment of the present invention.
Fig. 5 A is the signal mode schematic diagram of first area in Fig. 3.
Fig. 5 B is the signal mode schematic diagram of second area in Fig. 3.
Fig. 6 is the subregional signal mode schematic diagram such as 3 of the first embodiment.
Fig. 7 is the signal mode schematic diagram of each sweep trace of the first embodiment.
The horizontal partitioning that Fig. 8 A illustrates the picture of Fig. 3 increases vertical partitioning.
Fig. 8 B illustrates the area schematic of Fig. 8 A.
Fig. 9 A is first and second regional signal mode schematic diagram in Fig. 8 A.
Fig. 9 B is the signal mode schematic diagram in the 3rd zone in Fig. 8 A.
Fig. 9 C is four-range signal mode schematic diagram in Fig. 8 A.
Fig. 9 D is the signal mode schematic diagram in the 5th zone in Fig. 8 A.
Figure 10 is the scanning-line signal wave mode schematic diagram of Fig. 8 B.
Figure 11 illustrates the display device of implementing the second embodiment.
Figure 12 is the process flow diagram according to the method that is used for the minimizing image ghosting of the second preferred embodiment of the present invention.
[primary clustering symbol description]
10 display device 100 pictures
200 gate pole driver 300 source electrode drivers
102 first area 104 second areas
310 first subregion 320 second subregions
330 the 3rd subregion 340 the 4th subregions
350 the 5th subregions.
Embodiment
Instructions of the present invention provides different embodiment that the technical characterictic of the different embodiments of the present invention is described.Wherein, the configuration of each assembly in embodiment is the content that discloses for clearly demonstrating the present invention, is not to limit the present invention.And in different embodiment, the part of reference numerals repeats, and is for the purpose of simplifying the description, is not the relevance that means between different embodiment.
Please refer to Fig. 3, Fig. 3 illustrates the display device of implementing the first embodiment.Take the picture 100 of resolution 1600 * 900 as example, this picture 100 is to be divided into the plural number zone, and is to be provided by a display device 10.This display device 10 has data line (not icon) and 900 horizontal sweep traces (not icon) of a gate pole driver 200, a plurality of source electrode driver 300,1600 homeotropic alignments.This picture 100 has first area 102 and second area 104 is the comparatively serious zone of ghost image.Further say, this picture 100 can simply be divided into 3 deciles, and wherein the 1st to 300 of sweep trace is that the 301st to 600 of the first equal portions, sweep trace in picture 100 are in the second equal portions of picture 100 for the 601st to 900 of the second equal portions, sweep trace in picture 100.Yet picture 100 of the present invention is not limited to divide division with this 3 grade, also can be divided into more deciles.In addition, picture 100 of the present invention also is not limited to divide with identical decile, and the dividing mode of different sizes is also enforceable.
Please refer to Fig. 4 and Fig. 3, Fig. 4 is the process flow diagram according to the method for minimizing picture 100 ghost images of the first preferred embodiment of the present invention.The method starts from step S10.
In step S10, produce a plurality of activations (Output Enable, OE) signal, those output enable signals are used for adjusting respectively a plurality of conduction periods of those sweep traces in corresponding those zones (as first area 102 and second area 104), particularly adjust those conduction periods of those sweep traces according to the ghost image that reduces first area 102 and second area 104.In this preferred embodiment, adjust those conduction periods and be and shorten those mode conduction period and implement.
In step S20, export those output enable signals to this gate pole driver 200 to produce a plurality of scanning signals in corresponding those zones (as first area 102 and second area 104).
Please refer to Fig. 5 A and Fig. 6, Fig. 5 A is the signal mode schematic diagram of first area 102 in Fig. 3.For clearly demonstrating, scanning-line signal G1, the output enable signal OE1 of frenquency signal (CLK), data-signal, undelayed scanning-line signal G0 and delay and the scanning-line signal G2 of reality are illustrated respectively in different upright positions.Those output enable signals are to offer this gate pole driver 200 by time schedule controller (TCON) (not shown), and output enable signal is in order to the conduction period of gated sweep line.
This output enable signal can see through and set, and makes when this output enable signal is positioned at high levle, and corresponding sweep trace turn-offs.This output enable signal similarly can see through and set, and makes when this output enable signal is positioned at high levle corresponding conducting of sweep trace.In this preferred embodiment, this output enable signal OE1 sets when being positioned at high levle, and corresponding sweep trace turn-offs.
In the first area 102 of this picture 100, it is comparatively serious that the RC of sweep trace postpones, and its scanning-line signal transfers to first area 102 namely as shown in the scanning-line signal G1 that postpones, and has the delay of a tail.Therefore, shortening those sweep traces conduction periods is to turn-off ahead of time those sweep traces.See through the back segment of this output enable signal OE1 in this sweep trace conduction period and be set as high levle, turn-off ahead of time by this this sweep trace, as shown in the scanning-line signal G2 of reality.So make the RC delay (being the tail of signal) of this sweep trace suppressed ahead of time.Therefore, to picture element that should sweep trace thereby can not be written into next data-signal, alleviated the upper ghost image of first area 102.
Please refer to Fig. 5 B and Fig. 6, Fig. 5 B is the signal mode schematic diagram of second area 104 in Fig. 3.Similarly, data-signal S1, sweep trace n-signal, sweep trace N+1 signal, output enable signal OE3, actual sweep trace n-signal Gn and the actual sweep trace N+1 signal Gn+1 with frenquency signal (CLK), undelayed data-signal S0, delay illustrates respectively in different upright positions.In this preferred embodiment, this output enable signal OE3 sets when being positioned at high levle, and corresponding sweep trace turn-offs.
In the second area 104 of this picture 100, the RC of data line postpones comparatively serious, and its data line signal transfers to second area 104 namely as shown in the data line signal S1 that postpones.Therefore, shortening those conduction periods is to delay those sweep traces of conducting.See through the leading portion of this output enable signal OE3 in this sweep trace conduction period and be set as high levle, this sweep trace of turn on delay by this is as shown in the sweep trace n-signal Gn and sweep trace N+1 signal Gn+1 of reality.So make the data-signal S1 that is not written into delay of this sweep trace N+1.Therefore, to picture element that should sweep trace N+1 thereby can not be written into a upper data-signal, alleviated the lower ghost image of second area 104.
Please refer to Fig. 3 and Fig. 6, Fig. 6 is the subregional signal mode schematic diagram such as 3 of the first embodiment.Each output enable signal is the conduction period for the sweep trace in a corresponding zone of adjusting those zones.For instance, this picture 100 is divided into 3 deciles, and N is represented as whole number of scanning lines, for example 900 sweep traces.Those output enable signals OE has 3 OE1, OE2 and OE3, respectively in order to those minute corresponding sweep traces 1 to 300,301 to 600 such as the first equal portions of adjusting picture 100, the second equal portions and the 3rd, and a plurality of conduction periods of 601 to 900.Those output enable signals OE1, OE2 and OE3 correspond to respectively those sweep traces in those zones.Wherein reducing ghost image such as above-mentioned Fig. 5 A explanation of first decile (particularly the first area 102) of picture 100, offer the output enable signal of those sweep traces 1 to 300 as shown in OE1, is for turn-offing ahead of time those sweep traces 1 to 300 to reduce upper ghost image.
Similarly, reduce ghost image such as above-mentioned Fig. 5 B explanation of the 3rd decile (particularly second area 104) of picture 100, offering the output enable signal of those sweep traces 601 to 900 as shown in OE3, is be used to delaying those sweep traces 601 to 900 of conducting to reduce lower ghost image.
The ghost image of the second equal portions of this picture 100 is between the upper ghost image and binary lower ghost image of the first decile, so those sweep traces 301 to 600 need delay conducting and turn-off ahead of time, reduces by this binary ghost image of picture 100.Accordingly, offering the output enable signal of those sweep traces 601 to 900 as shown in OE2, is to delay conducting and turn-off ahead of time those sweep traces 601 to 900 to shorten corresponding conduction period for need.
In step S30, this gate pole driver 200 drives a plurality of sweep traces in corresponding those zones according to those scanning signals.Should be noted, those scanning signals are the signals through the actual scan line 1 to 900 after those output enable signal effects, wherein conduction period of shortening to T2, sweep trace 601 to 900 conduction period of shortening to T1, sweep trace 301 to 600 conduction period of sweep trace 1 to 300 shortens to T3, and T1, T2 and T3 are preferably as identical.
Be understandable that, the method for reducing image ghosting of the present invention is not limited to this picture 100 is divided into 3 deciles, also can be divided into 5,10 and the ghost image of other adjustment regionals of assigning to meticulousr such as more.Lift an extreme example, each output enable signal is for the wherein conduction period of the sweep trace of a correspondence of adjusting those sweep traces.Particularly, this picture can be divided into the zone of corresponding each sweep trace, namely be divided into N zone, N is the number of whole sweep traces, and providing each sweep trace other output enable signal to reduce the ghost image of each, those output enable signals are to adjust the conduction period of each those sweep trace according to the ghost image that reduces corresponding each those sweep trace.Please refer to Fig. 7, Fig. 7 is the signal mode schematic diagram of each sweep trace of the first embodiment.Therefore in this embodiment, N is 900, and all to make 1 to 900 conduction period of sweep trace be a complete frequency period to the signal of original sweep trace 1 to 900 (being N).
Similarly, the output enable signal that provides at step S10 has 900 equally, as OE1, OE2 ... OE900, wherein each those output enable signal corresponds to respectively each those sweep trace.In step S20, export those output enable signals OE1, OE2 ... OE900 is to this gate pole driver 200, with sweep trace 1 signal, sweep trace 2 signals that produce actual correspondence ... the sweep trace n-signal.In step S30, this gate pole driver 200 is according to sweep trace 1 signal, sweep trace 2 signals ... the sweep trace n-signal drives sweep trace 1, the sweep trace 2 in corresponding those zones (i.e. 900 zones) ... sweep trace N.
In the first embodiment, except picture 100 is divided into a plurality of horizontal zones, also this picture 100 can be divided into several vertical area to do meticulousr adjustment.Please refer to Fig. 8 A, the horizontal partitioning that Fig. 8 A illustrates the picture 100 of Fig. 3 increases vertical partitioning.In this embodiment, this display device has 5 source electrode drivers 300, therefore this vertical partitioning is divided into the first corresponding subregion 310 to the 5th subregions 350.
Therefore, in the first embodiment, produce a plurality of latch datas (latch data, LD) signal also the comprising of method that reduces picture 100 ghost images, and those latch data signals are used for adjusting respectively the plurality of data output time of those data lines in corresponding those zones.Export those latch datas LD signal to those source electrode drivers 300, to produce a plurality of picture element data signals in corresponding those zones.At last, those source electrode drivers drive those data lines in corresponding those zones according to those picture element data signals.
Please refer to Fig. 9 A to Fig. 9 D, the signal mode schematic diagram that the signal mode schematic diagram that Fig. 9 A is the signal mode schematic diagram of first and second subregion in Fig. 8 A, signal mode schematic diagram that Fig. 9 B is the 3rd subregion in Fig. 8 A, Fig. 9 C is the 4th subregion in Fig. 8 A and Fig. 9 D are the 5th subregion in Fig. 8 A.Particularly, those latch data signals are to offer respectively a little source electrode drivers 300 by time schedule controller (TCON) (not shown), when source electrode driver 300 changes control signal (numeral changes into simulation) with data, when the latch data signal when falling edge (falling edge), trigger source driver 300 corresponding levels of output data.
This picture 100 is divided into five subregions, RC the closer to the sweep trace of the 5th subregion 350 postpones more serious, the order of severity is the 5th subregion 350〉the 4th subregion 340〉the 3rd subregion 330〉the second subregion 320〉the first subregion 310, still the latch data signal of each source electrode driver 300 is divided into LD1 to LD5 those subregions is done unit control, be described as follows.
Please refer to Fig. 9 A, in the first subregion 310 and the second subregion 320, because distance gate pole driver 200 is nearer, therefore the RC of sweep trace postpones less obvious (tail is shorter), thereby the falling edge time of LD1 and LD2 is set as T0, has just begun namely to send the corresponding level of data line of the first subregion 310 and the second subregion 320 to be controlled at the recurrence interval.
Please refer to Fig. 9 B, in the 3rd subregion 330, the RC of sweep trace postpones obvious gradually, thereby is T1 with the falling edge time delay of LD3, begins to be controlled at the recurrence interval T1 just sends the 3rd subregion 330 after the time the corresponding level of data line.
Please refer to Fig. 9 C, in the 4th subregion 340, the RC of sweep trace postpones comparatively obvious, thereby is T2 with the falling edge time delay of LD4, begins to be controlled at the recurrence interval T2 just sends the 4th subregion 340 after the time the corresponding level of data line.
Please refer to Fig. 9 D, in the 5th subregion 350, the RC of sweep trace postpones comparatively obvious, thereby is T3 with the falling edge time delay of LD5, begins to be controlled at the recurrence interval T3 just sends the 5th subregion 350 after the time the corresponding level of data line.Wherein the pass of falling edge delay is T3〉T2〉T1〉T0, and till adjusting to the ghost image disappearance.In brief, latch data signal LD delays between the period of output of those data-signals, reduces ghost image to coordinate the scan signal line that postpones.
From the above, the method for image ghosting of the present invention can be utilized and latch data signal LD and output enable signal OE subregion improve the ghost image of picture simultaneously.Please refer to Fig. 8 B, Fig. 8 B illustrates the area schematic of Fig. 8 A.In regional I, II in Fig. 8 B, III, IV, due to the RC delay of sweep trace, so can be easier to occur ghost image.Therefore can control LD4 and the LD5 of the 4th subregion 340 and the 5th subregion 350 (as shown in Fig. 8 A), when allowing the scan signal line N bar that postpones not yet turn-off, also keeping the data of N pen, be unlikely to write N+1 data that changing, its signal mode schematic diagram is as shown in Fig. 9 C and Fig. 9 D.
In regional V in Fig. 8 B, can utilize output enable signal OE to reduce the lower ghost image of regional V.Please refer to Figure 10, Figure 10 is the scanning-line signal wave mode schematic diagram of Fig. 8 B.Zone V is positioned at the 3rd decile of the level of this picture 100, should zone V(sweep trace be therefore 2N/3+1～N, as 601 to 900) the output enable signal OE3 that is above-mentioned Fig. 6 show.Therefore, namely as the signal of actual sweep trace 2N/3+1～N, be used for delaying those sweep traces 601 to 900 of conducting to reduce lower ghost image after the signal function of original sweep trace 2N/3+1～N.
Because regional I, II, III, IV have reduced ghost image by the control of latch data signal LD, the first decile and the binary sweep trace that therefore are positioned at picture 100 do not need again by output enable signal OE effect.Therefore specifically, OE 1～2N/3 is low level entirely, actual sweep trace 1 to 2N/3 signal mode or with original the same.Should be noted, the present invention is not limited to this kind dividing mode, also this picture 100 can be divided into more multizone, to do meticulousr adjustment.
In sum, the method that is used for the minimizing image ghosting of first embodiment of the invention has utilized a plurality of output enable signal OE to do other improvement to the ghost image of picture zones of different, be to provide what is more the output enable signal OE identical with the sweep trace number, to reduce the online ghost image of each scanning.In addition, the method that be used for to reduce image ghosting of the first embodiment also combines and produces a plurality of latch data signals so that the different vertical area of picture is adjusted, the problem that the complete RC that has overcome sweep trace and data line postpones.
The second embodiment of the method for reducing image ghosting of the present invention below will be described.Different from the first embodiment is that the second embodiment first is divided into a plurality of vertical area with this picture 100, recycles aforesaid latch data signal LD and controls those regional data line signals, to reduce the ghost image of subregion.Further also this picture 100 can be divided into a plurality of horizontal zones, recycling output enable signal OE gated sweep line signal is to reduce other regional ghost image.Wherein be basically the same as those in the first embodiment part at this and repeat no more.
Please refer to Figure 11, Figure 11 illustrates the display device of implementing the second embodiment.Similarly, take the picture 100 of resolution 1600 * 900 as example, this picture 100 is to be divided into plural number zone, particularly vertical area, and is to be provided by a display device 10.This display device 10 has data line (not icon) and 900 horizontal sweep traces (not icon) of a gate pole driver 200, a plurality of source electrode driver 300,1600 homeotropic alignments.In this embodiment, this display device has 5 source electrode drivers 300, therefore this picture 100 is divided into the first subregion 310 to the 5th subregions 350, with the above-mentioned source electrode driver 300 of indivedual correspondences.
Please refer to Figure 12, Figure 12 is the process flow diagram according to the method for minimizing picture 100 ghost images of the second preferred embodiment of the present invention.The method starts from step S50.
In step S50, produce a plurality of latch data signal LD, those latch data signals are used for reducing respectively the ghost image of those zones (as the first subregion 310 to the 5th subregions 350).Those output enable signals are particularly delayed those data output times in order to the plurality of data output time of those data lines of adjusting corresponding those zones.The explanation of the above-mentioned Fig. 9 of its detail with reference A to Fig. 9 D.
In step S60, export those latch data signals to those source electrode drivers 300, to produce a plurality of picture element data signals in corresponding those zones.Each source electrode driver 300 is to adjust all data lines of corresponding region according to latch data signal corresponding in those latch data signals.In brief, each source electrode driver 300 corresponds to a latch data signal to adjust all data lines of corresponding region.
In step S70, those source electrode drivers 300 drive those data lines in corresponding those zones according to those picture element data signals.Wherein those source electrode drivers 300 drive respectively those data lines that are positioned at the first subregion 310 to the 5th subregions 350.
In a second embodiment, except picture 100 is divided into a plurality of vertical area, same also can be divided into this picture 100 several horizontal zones to do meticulousr adjustment.Refer again to Fig. 8 A and Fig. 8 B, as previously mentioned, this picture 100 can simply be further subdivided into 3 deciles, and wherein the 1st to 300 of sweep trace is that the 301st to 600 of the first equal portions, sweep trace in picture 100 are in the second equal portions of picture 100 for the 601st to 900 of the second equal portions, sweep trace in picture 100.Yet picture of the present invention is not limited to divide division with this 3 grade, also can be divided into more deciles.From the above, the method for image ghosting of the present invention can be utilized and latch data signal LD and output enable signal OE subregion improve the ghost image of picture simultaneously.
Therefore, the method that is used for the minimizing image ghosting of the second embodiment further comprises a plurality of output enable signals of generation, and those output enable signals are used for adjusting respectively a plurality of conduction periods of those sweep traces in corresponding those zones.Then, export those output enable signals to this gate pole driver 300, to produce a plurality of scanning signals in corresponding those zones.At last, this gate pole driver 300 drives a plurality of sweep traces in corresponding those zones according to those scanning signals.The ghost image that wherein utilizes output enable signal to reduce the zone is illustrated in, is no longer given unnecessary details at this.
Similarly, those output enable signals are the conduction periods for those sweep traces that shorten those zones.In one implemented the sample attitude, each output enable signal was the conduction period for the sweep trace in a corresponding zone of adjusting those zones, for example regional V of Fig. 8.Implement in the sample attitude at another, each output enable signal is for the wherein conduction period of the sweep trace of a correspondence of adjusting those sweep traces.For example, distinctly input an output enable signal to the sweep trace of the regional V of corresponding figures 8, so that every sweep trace is done adjustment out of the ordinary, as shown in Figure 7.
In sum, the method that be used for to reduce image ghosting of second embodiment of the invention has utilized a plurality of latch data signals to offer individually each source electrode driver 300, does other improvement with the ghost image to picture 100 different vertical zones.In addition, the method that be used for to reduce image ghosting of the second embodiment also combines and produces a plurality of output enable signals so that the different horizontal zone of picture 100 is adjusted, complete solution the RC of sweep trace and data line postpone upper ghost image and the lower ghost image problem of the zones of different that causes.
Although the present invention discloses as above with preferred embodiment; so it is not 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 can be used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (10)
1. method that be used for to reduce image ghosting, this picture is to be divided into plural zone, and is to be provided by a display device, and this display device has a gate pole driver, plurality of sources driver, a plurality of data lines and a plurality of sweep traces, it is characterized in that, the method comprises:
Produce a plurality of output enable signals, those output enable signals are for a plurality of conduction periods of those sweep traces that shorten corresponding those zones;
Export those output enable signals to this gate pole driver, to produce a plurality of scanning signals in corresponding those zones; And
This gate pole driver drives those sweep traces in those corresponding zones according to those scanning signals.
2. the method for reducing image ghosting according to claim 1, it is characterized in that: wherein each output enable signal is the conduction period for all sweep traces in a corresponding zone of shortening those zones.
3. the method for reducing image ghosting according to claim 1, it is characterized in that: wherein each output enable signal is for the wherein conduction period of the sweep trace of a correspondence that shortens those sweep traces.
4. the method for reducing image ghosting according to claim 1, is characterized in that, the method further comprises:
Produce a plurality of latch data signals, those latch data signals are for the plurality of data output time of those data lines of delaying those zones;
Export those latch data signals to those source electrode drivers, to produce a plurality of picture element data signals in corresponding those zones; And
Those source electrode drivers drive those data lines in those corresponding zones according to those picture element data signals.
5. the method for reducing image ghosting according to claim 4, it is characterized in that: wherein adjusting those data output times is to delay those data output times.
6. method that be used for to reduce image ghosting, it is characterized in that: described picture is to be divided into plural zone, and be to be provided by a display device, this display device has a gate pole driver, plurality of sources driver, a plurality of data lines and a plurality of sweep traces, and the method comprises:
Produce a plurality of latch data signals, those latch data signals are for the plurality of data output time of those data lines of delaying those zones;
Export those latch data signals to those source electrode drivers, to produce a plurality of picture element data signals in corresponding those zones; And
Those source electrode drivers drive those data lines in corresponding those zones according to those picture element data signals.
7. the method for reducing image ghosting according to claim 6, it is characterized in that: wherein those zones are a plurality of vertical area for this picture.
8. the method for reducing image ghosting according to claim 6, is characterized in that, the method further comprises:
Produce a plurality of output enable signals, those output enable signals are for a plurality of conduction periods of those sweep traces that shorten corresponding those zones;
Export those output enable signals to this gate pole driver, to produce a plurality of scanning signals in corresponding those zones; And
This gate pole driver drives those sweep traces in corresponding those zones according to those scanning signals.
9. the method for reducing image ghosting according to claim 8, it is characterized in that: wherein each output enable signal is the conduction period for the sweep trace in a corresponding zone of shortening those zones.
10. the method for reducing image ghosting according to claim 8, it is characterized in that: wherein each output enable signal is for the wherein conduction period of the sweep trace of a correspondence that shortens those sweep traces.
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| CN102163405B (en) * | 2011-05-31 | 2013-04-17 | 福建华映显示科技有限公司 | Method for controlling signal of scanning line of display |
| CN102881254B (en) * | 2012-09-28 | 2015-07-15 | 昆山工研院新型平板显示技术中心有限公司 | Driving system and driving method for improving picture quality |
| CN103050102B (en) * | 2012-12-10 | 2014-11-19 | 华映视讯（吴江）有限公司 | Device and method for reducing ghost images displayed on liquid crystal display panel |
| CN207867872U (en) | 2018-02-26 | 2018-09-14 | 惠科股份有限公司 | Display panel and display device |
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| US6731266B1 (en) * | 1998-09-03 | 2004-05-04 | Samsung Electronics Co., Ltd. | Driving device and driving method for a display device |
| US20090184914A1 (en) * | 2008-01-17 | 2009-07-23 | Kai-Shu Han | Driving device for gate driver in flat panel display |
| CN101498850A (en) * | 2008-01-29 | 2009-08-05 | 佳能株式会社 | Liquid crystal display apparatus, drive method thereof, and liquid crystal projection apparatus |
| CN101533597A (en) * | 2009-04-02 | 2009-09-16 | 深圳华映显示科技有限公司 | Driving method of scanning line of plane monitor |
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| JP3494126B2 (en) * | 2000-05-26 | 2004-02-03 | セイコーエプソン株式会社 | Image processing circuit, image data processing method, electro-optical device, and electronic apparatus |
| JP4071531B2 (en) * | 2002-04-23 | 2008-04-02 | 株式会社ルネサステクノロジ | Thin film magnetic memory device |
| CN101071545A (en) * | 2006-05-12 | 2007-11-14 | 奇美电子股份有限公司 | Liquid crystal display device and its driving method |
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| US6731266B1 (en) * | 1998-09-03 | 2004-05-04 | Samsung Electronics Co., Ltd. | Driving device and driving method for a display device |
| US20090184914A1 (en) * | 2008-01-17 | 2009-07-23 | Kai-Shu Han | Driving device for gate driver in flat panel display |
| CN101498850A (en) * | 2008-01-29 | 2009-08-05 | 佳能株式会社 | Liquid crystal display apparatus, drive method thereof, and liquid crystal projection apparatus |
| CN101533597A (en) * | 2009-04-02 | 2009-09-16 | 深圳华映显示科技有限公司 | Driving method of scanning line of plane monitor |
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