CN101286303A - LCD device and its image display process - Google Patents
LCD device and its image display process Download PDFInfo
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- CN101286303A CN101286303A CNA2007100971316A CN200710097131A CN101286303A CN 101286303 A CN101286303 A CN 101286303A CN A2007100971316 A CNA2007100971316 A CN A2007100971316A CN 200710097131 A CN200710097131 A CN 200710097131A CN 101286303 A CN101286303 A CN 101286303A
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- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical compound COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 claims description 50
- 239000004973 liquid crystal related substance Substances 0.000 claims description 45
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Abstract
The invention discloses an image display method of an LCD, which is used for driving a plurality of pixels when a first vision frame and a second vision frame are sequentially displayed. The method includes the following steps: a gray-scale difference between the first vision frame and the second vision frame is detected to judge the change of a driving mode between the first vision frame and the second vision frame; according to the change of driving modes, the quantity proportion of the pixels driven by a dynamic mode and a static mode is regulated when the second vision frame is displayed; and a plurality of gray-scale data corresponding to the pixels are regulated when the second vision frame is output. The imaging display method can avoid the sudden and severe change of the brightness of images when the driving modes are changed so as to lead users to have no feeling of the fluctuation of the images so as to further enhance the quality of the LCD and the image display.
Description
Technical field
The invention relates to a kind of liquid crystal indicator and driving method thereof, especially in regard to the liquid crystal indicator and the image display method thereof of a kind of application black plug (ash) technology.
Background technology
In order to strengthen the display effect of liquid crystal indicator, often look the mode of frame (sub-frame) and shorten the image data pulse at present to add son, be referred to as class pulsed lcd technology, in the prior art common a kind of be to add a normal son that shows black (normally black) to look frame, can be described as black plug or Plug Grey technology.
In the image display method of the liquid crystal indicator of prior art, pixel on the display surface is to unify in the frame to select for use dynamic/static schema to drive same looking according to the dynamic/static characteristics of looking frame, promptly when pixel will drive with dynamic mode then the method with aforementioned black plug (ash) picture realize, when pixel will drive with static schema, then must not insert other dark-coloured pictures.
As shown in Figure 1, adjacent two pixels 101 and 102, it receives luma data A and B respectively, and shows same looking among frame time (frame time) Tf.See also Fig. 2, the image display technique of first kind of common class pulsed liquid-crystal apparatus in the prior art, be when pixel 101 and 102 receives luma data A and B, cooperate the image frequency doubling technology, cover one and normal show black son and look frame (normally blacksub-frame), for example a GTG value is that 0 son is looked frame, makes pixel 101 and 102 as shown in Figure 2, only show respectively in the time that at the preceding frame of partly looking luma data is that the son of A and B is looked frame, and be black picture in the time at the later half frame of looking.Thus, (eye-tracking model) can get according to human eye trace model, and the black plug picture method of using this prior art can effectively make blurred width (blur width) reduce by half.
Yet, make that pixel is only correct in the time of half and show luma data because the black plug of this prior art is looked the frame method, and to be luma data be second half time 0 normally show black picture, therefore will make that picture brightness reduces by half, influence image effect.
For the pixel intensity that method caused of the improving above-mentioned black plug picture problem that reduces by half, the image display technique of second kind of common class pulsed liquid crystal indicator provides a method that does not influence the picture equivalent luminance in the prior art.See also Fig. 3.When pixel 101 and 102 was received luma data A and B, the method for this prior art was according to predetermined principle, allowed pixel 101 show that in regular turn son looks frame A ' and C, and allowed pixel 102 show that in regular turn son looks frame B ' and D.Pixel 101 shows the mean flow rate that son is looked frame A ' and C in looking frame time T f, identical with the brightness effects that directly shows luma data A among Fig. 1 in all looking frame time T f; And pixel 102 shows the mean flow rate that son is looked frame B ' and D in looking frame time T f, and is identical with the brightness effects that directly shows luma data B among Fig. 1 in all looking frame time T f.
Please consult Fig. 4 again, the table of comparisons 110 shown in Figure 4 is the examples for art methods shown in Figure 3 employed predetermined principle when generation is looked frame.For instance, according to Fig. 3 and Fig. 4, the second kind pulsed lcd technology of prior art can be when a pixel-by-pixel basis be received an original luma data 150, shows that in regular turn luma data is that 250 and 0 two sons are looked frame; And when a pixel-by-pixel basis is received an original luma data 151, show that in regular turn luma data is that 255 and 0 two sons are looked frame.In the table of comparisons shown in Figure 4 110, when original GTG value less than 151 the time, can cover a black picture, promptly produce a luma data and be 0 second son and look first son of frame and collocation mutually and look frame, so that two sons are looked comprehensive the brightness that the brightness effects of frame equals original GTG value.And in original GTG value greater than 152 o'clock, then can be covered a luma data is that second son that 255 first son is looked a frame and a correspondence is looked frame, the comprehensive brightness effects that makes two sons look frame equally equals the brightness of original GTG value.In general image data, the GTG value of adjacent pixels is often close.Therefore, if two pixels 101 among Fig. 3 and 102 original GTG value be all less than 151, the then sub GTG value C that looks frame will equate with D and be all 0; If the original GTG value of pixel 101 and 102 is all greater than 152, the then sub GTG value A ' that looks frame will equate with B ' and be all 255.These two kinds of situations all can effectively reduce the blurred width of dynamic image, and do not influence the brightness that image shows again.
Yet, in above-mentioned second kind of prior art, when image continues in dynamic mode, replace the flicker that the black plug picture can improve dynamic menu really with the Plug Grey picture, but when image is static moment by dynamic transition, whole pixels is to be changed with static schema by dynamic mode to drive, thus, because image transfers the static Plug Grey picture that is not aided with afterwards to, thereby make the brightness of whole image increase suddenly, the user will experience image and produce surging, and then cause the quality of liquid crystal indicator show image to reduce.
Therefore, how providing a kind of liquid crystal indicator and image display method thereof, avoid the generation of the problems referred to above and improve above-mentioned shortcoming, is an important problem in fact.
Summary of the invention
The present invention is a kind of liquid crystal indicator and the image display method thereof that provides for the above-mentioned defective that overcomes the prior art existence, produces surging to reduce the picture that produces when drive pattern is changed.
For reaching above-mentioned purpose, image display method according to a kind of liquid crystal indicator of the present invention, in order to show that in regular turn one first drives most pixels when looking frame and one second and looking frame, described method comprises: detect described first and look the grayscale difference amount that frame and described second looks between frame and first look the variation that frame and this second looked the drive pattern between frame to judge this; According to the variation of described drive pattern, be adjusted at the described second described pixel quantity ratio that drives with a dynamic mode when looking frame and drive with a static schema; And be output in the pairing most luma data of the described second described pixel when looking frame.
For reaching above-mentioned purpose, according to a kind of liquid crystal indicator of the present invention, be in order to showing that in regular turn one first drives most pixels when looking frame and one second and looking frame, described liquid crystal indicator comprises a testing circuit, an adjustment circuit and a GTG change-over circuit.Testing circuit is to detect first to look frame and second and look a grayscale difference amount between frame to judge that first looks frame and second and look the variation of the drive pattern between frame and change the judgement signal to export a drive pattern; Adjusting circuit is to electrically connect testing circuit with foundation drive pattern variable signal, is adjusted at the second pixel quantity ratio that drives with a dynamic mode when looking frame and drive with a static schema; And the GTG change-over circuit is electrically connect to adjust circuit, and exports the corresponding luma data of each pixel according to described pixel quantity ratio.
For reaching above-mentioned purpose, comprise most pixels and a control circuit according to a kind of liquid crystal indicator of the present invention, wherein said pixel is in order to showing that one first looks frame and one second and looks frame data, and partial pixel is to drive with a dynamic mode, and the remainder pixel is to drive with a static schema; Control circuit is to drive the pixel quantity ratio that drives with static schema with dynamic mode in order to decision.
According to liquid crystal indicator of the present invention and image display method, when first looks frame and second and looks drive pattern between frame and produce to change, promptly being adjusted at second drives with a dynamic mode when looking frame and with the pixel quantity ratio that a static schema drives, is not to allow whole pixels show that with dynamic mode or static schema second looks frame.Thus, can avoid violent suddenly change of image brightness when drive pattern produces transformation, can allow the user experience and produce surging less than image, and then the quality-improving that liquid crystal indicator and image thereof are shown.
Description of drawings
Feature of the present invention, performance and advantage are further described by following embodiment and accompanying drawing thereof.
Fig. 1 is the synoptic diagram that prior art two pixels receive luma data respectively;
Fig. 2 is the synoptic diagram that prior art two pixels receive luma data respectively and comply with first kind of existent technique frequency multiplication;
Fig. 3 is the synoptic diagram that prior art two pixels receive luma data respectively and comply with second kind of existent technique frequency multiplication;
Fig. 4 is that prior art is the table of comparisons of second kind of existing frequency doubling technology;
Fig. 5 is the process flow diagram according to the image display method of the liquid crystal indicator of preferred embodiment of the present invention;
Fig. 6 A and Fig. 6 B are the synoptic diagram according to image intra block in the image display method of the liquid crystal indicator of preferred embodiment of the present invention;
Fig. 7 A to Fig. 7 E is the synoptic diagram according to each block in the image display method of the liquid crystal indicator of preferred embodiment of the present invention;
Fig. 8 is the synoptic diagram according to the liquid crystal indicator of preferred embodiment of the present invention;
Fig. 9 is a synoptic diagram of adjusting circuit among Fig. 8;
Figure 10 A to Figure 10 D is the synoptic diagram of drive pattern table among Fig. 9;
Figure 11 is another synoptic diagram according to the liquid crystal indicator of preferred embodiment of the present invention; And
Figure 12 is the synoptic diagram of GTG change-over circuit among Figure 11.
The main element symbol description is as follows among the figure:
101,102: pixel
110: the table of comparisons
Tf: look the frame time
S01～S04: the step of the image display method of liquid crystal indicator
2: liquid crystal indicator
20: look the frame buffer zone
21: look frame buffer zone controller
22: the input block
23: output buffer
24: testing circuit
25: adjust circuit
251: counter
252: the drive pattern table
253: multiplexer
254: counter
26: the GTG change-over circuit
261: multiplexer
262: dynamic high gray table
263: dynamically low GTG table
264: static GTG table
265: static high gray table
266: static low GTG table
267: GTG table source
S
D/S: signal is judged in the drive pattern conversion
S
H/L: son is looked the frame switching signal
S
Mux: the pixel drive mode switching signal
Val: count value
Embodiment
Hereinafter with reference to correlative type, liquid crystal indicator and image display method thereof according to preferred embodiment of the present invention are described.
At first, please refer to shown in Fig. 5 to Fig. 7 E, with a kind of image display method of liquid crystal indicator of explanation preferred embodiment of the present invention.
As shown in Figure 5, be in order to showing that in regular turn one first drives most pixels when looking frame and one second and looking frame according to the image display method of a kind of liquid crystal indicator of preferred embodiment of the present invention, described image display method comprises step S01～S04.
At step S01, at first detect first and look frame and second and look a grayscale difference amount between frame to judge that first looks the variation that frame and second is looked the drive pattern between frame.
At step S02,, be adjusted at the second pixel quantity ratio that drives with a dynamic mode when looking frame and drive with a static schema then according to the variation of drive pattern.
At step S03, the pairing most luma data of pixel when frame is looked in output second.
At step S04, the pairing most luma data of pixel drive a display panels when looking frame according to second.
Change by dynamically looking frame that static state is looked frame or looking frame when video signal by static state changes into when dynamically looking frame in order to improve in the existent technique when signal of video signal into, easily allow the brightness of picture that unexpected variation is also arranged, and then produced the perceptible surging of user because looking the variation of frame drive pattern.Therefore, the image display method of present embodiment is when looking the variation of frame drive pattern, adjust next and look in the frame pixel quantity ratio that drives and drive with static schema with dynamic mode, or adjust next and look pixel quantity that drives with dynamic mode in the frame and the pixel quantity that drives with static schema, be not that all pixels that only can allow next look frame as existent technique all drive or all drive with static schema with dynamic mode, but allow pixel little by little drive or little by little to drive with static schema with dynamic mode, thereby when looking the variation of frame drive pattern, can reduce the situation that picture brightness changes suddenly, and then reduce the generation of surging.Note that in the present embodiment, the drive pattern of each pixel can be inequality, pixel drives with dynamic mode and is meant that described pixel utilizes the Plug Grey technology of prior art to come the show image signal; Pixel drives with static schema and refers to that then described pixel do not use the Plug Grey technology to come the show image signal.
Shown in Fig. 6 A and Fig. 6 B, the display frame of a liquid crystal indicator may be partitioned into most blocks, most pixels (shown in dotted line) are to be distributed in each block, and block is as the base unit of adjusting the pixel quantity ratio that drives and drive with static schema with dynamic mode (below be to abbreviate as dynamically/the static pixels quantitative proportion).In addition, block is not defined as square matrix yet, and shown in Fig. 6 B, block is made up of the capable pixel of majority.
Shown in Fig. 7 A to Fig. 7 B, block is the square matrix for one 2 * 2, and certainly, the quantity of square matrix is also unrestricted, also can be 8 * 8 or other big or small square matrixs.The image display method of liquid crystal indicator be can adjust in the block dynamically/the static pixels quantitative proportion, below be to be that 2 * 2 square matrix is that example illustrates with a block.
Shown in Fig. 7 A, be to show that first looks each pixel in the block all drives with dynamic mode in the frame.Shown in Fig. 7 B, look frame by dynamic first and be converted to static second when looking frame when step S01 judges drive pattern, step S02 increases by second to look the pixel quantity that drives with static schema in the frame, it is with 1 pixel changes with static schema and drives in the position in the block, and other are not indicated that the pixel of the position of numeral is still continued to use with dynamic mode and drive.
Shown in Fig. 7 C to Fig. 7 E, the image display method of liquid crystal indicator also shows that in second one the 3rd looks frame to the 5th and looks frame after looking frame, wherein when handling the 3rd when looking frame (Fig. 7 C), step S02 increases the 3rd to look frame to the five and look in the frame pixel quantity that drives with static schema gradually, it is with in the block, the pixel of position 2,3,4 is also all changed with static schema to drive in regular turn.In each block, it does not indicate that the pixel of position of numeral is still continued to use with dynamic mode and drives that when the 5th looked frame, whole pixels all drove with static schema in the block.
Noting, look the appearance order of frame among Fig. 7 A to Fig. 7 E, is relevant with the patterns of change that drives, when drive pattern during by opposite change direction, just by static conversion when dynamically looking frame, the drive pattern of pixel changes ratio in the block, then the direction by Fig. 7 E to Fig. 7 A changes.Shown in Fig. 7 E, be to show that first looks the pixel of each in the block all drives with static schema in the frame, shown in Fig. 7 D, look frame by first of static state and be converted to dynamic second when looking frame when step S01 judges drive pattern, step S02 reduces second to look the pixel quantity that drives with static schema in the frame, it is will be in each block be marked as 4 pixel originally to change with dynamic mode and drive, and other have the pixel of the position of the numeral indicated still to continue to use with static schema to drive.
Shown in Fig. 7 C to Fig. 7 A, the image display method of liquid crystal indicator also shows that in second the 3rd looks frame to the five and look frame after looking frame, wherein when handling the 3rd when looking frame, step S02 reduces the 3rd to look frame to the five and look in the frame pixel quantity that drives with static schema gradually, it is with in each block, the pixel that originally is marked as 3,2,1 is changed with dynamic mode to drive in regular turn.In each block, other have the pixel of position of the numeral indicated still to continue to use with static schema to drive.When the 5th looks frame (as Fig. 7 A), all pixel all drives with dynamic mode.
In addition, if look the driving ratio of frame pixel in adjustment, when each pixel in the block does not fully all drive with static schema or with dynamic mode as yet and the drive pattern of looking frame change again, then as long as will be dynamically/the static pixels quantitative proportion oppositely adjusts.
For example shown in Fig. 7 A to Fig. 7 C, the drive pattern of looking frame is to change static schema into by dynamic mode earlier, yet but drive pattern changes dynamic mode into when the 4th looks frame, at this moment, as long as reduce the pixel quantity that drives with static schema in each block in regular turn with the order of Fig. 7 C to Fig. 7 A.Same similarly, when the drive pattern of looking frame is when changing dynamic mode into by static schema earlier, change again when driving, as long as increase the pixel quantity that drives with static schema in each block with static schema if look the drive pattern of frame in the way that changes.
Secondly, please refer to Fig. 8, will specify the foregoing liquid crystal display packing for an embodiment and how operate on a liquid crystal indicator to shown in Figure 11.
As shown in Figure 8, be to comprise to look frame buffer zone (frame buffer) 20, and look frame buffer zone controller (frame buffer controller) 21, one input block (input buffer) 22, one output buffer (output buffer) 23, one testing circuit 24, and adjust a circuit 25 and a GTG change-over circuit 26 according to a liquid crystal indicator 2 of preferred embodiment of the present invention.
When frame F is looked in 26 processing of GTG change-over circuit
mThe time, testing circuit 24 is according to looking frame F with adjusting circuit 25
M-1With look frame F
mBetween drive pattern change to be adjusted at and look frame F
mIn the pixel quantity ratio that drives and drive with static schema with dynamic mode, or adjust and look frame F
mIn the pixel quantity that drives with dynamic mode and the pixel quantity that drives with static schema.
Looking frame data is by input block 22 inputs, then export a data line drive circuit to after treatment by output buffer 23, data line drive circuit is that each pixel data that will look in the frame data writes in the storage capacitors of each pixel of display panels, so as to controlling corresponding liquid crystal deflection angle.Because the entity structure of data line drive circuit, display panels and the circuit of other cooperations such as scan line drive circuit etc. are not the emphasis of present embodiment, thus do not draw in illustrating and below repeat no more.
In the present embodiment, testing circuit 24 is to look frame F
M-1With look frame F
mThe luma data value of interior pixel is subtracted each other obtaining most GTG differences, and sum total GTG difference to be obtaining a sum total difference, and relatively sums up difference and a threshold value (threshold value) to produce drive pattern conversion judgement signal S
D/S, look frame F so as to judgement
M-1With look frame F
mBetween drive pattern whether change.
Look frame F when what drive by dynamic mode
M-1Be converted to by what static schema drove and look frame F
mThe time, signal S is judged in the drive pattern conversion
D/SBe to be positioned at one first standard, when looking frame F by static state
M-1Be converted to and look frame F dynamically
mThe time drive pattern conversion judge signal S
D/SBe to be positioned at one second standard.
As shown in Figure 9, adjust circuit 25 and comprise a counter (frame counter) 251, plurality of drive pattern list (matrix tables) 252, one multiplexer 253 and another counter 254.Wherein, counter 251 is that counting is looked frame F
mAfter look frame quantity to export a count value Val, drive pattern table 252 be in the record block pixel with static schema and the information that drives with dynamic mode, ratio with static schema and the described pixel that drives with dynamic mode in each drive pattern table is inequality, and multiplexer 253 is to select wherein a drive pattern table 252 to export a pixel drive mode switching signal S according to count value Val
Mux
Please be simultaneously with reference to Fig. 8 and Fig. 9, counter 251 is to electrically connect testing circuit 24 to judge signal S to receive the drive pattern conversion
D/S, when signal S is judged in the drive pattern conversion
D/SWhen changing, counter 251 just is triggered and initialization.If signal S is judged in the drive pattern conversion
D/SIn first punctual, counter 251 is initialized to minimum value, and then count value Val is added 1 with as exporting every a time (for example being 60Hz) of looking frame; If signal S is judged in the drive pattern conversion
D/SIn second punctual, counter 251 is initialized to maximal value, and then count value Val is subtracted 1 with as exporting every a time of looking frame.
Drive pattern table 252 is big or small consistent with block, with block is that 2 * 2 square matrix is an example, adjusting circuit 25 is to have four drive pattern tables 252, the information of each drive pattern table 252 record is shown in Figure 10 A to Figure 10 D, wherein, being denoted as 1 in drive pattern table 252 is that correspondence position will drive with static schema in the block, and being denoted as 0 is that correspondence position will drive with dynamic mode in the block, and it is all different to be denoted as 1 quantity in each drive pattern table 252.
When drive pattern by looking frame F dynamically
M-1Be converted to the static frame F that looks
mThe time, count value Val increases, and looks frame F
M+1, F
M+2Count value Val little by little increases, and therefore, multiplexer 253 is by looking more 1 the drive pattern table 252 conduct output that is denoted as to be arranged in the selection of frame ground, so as to increasing the pixel quantity that drives with static schema gradually.When count value Val arrives maximal value, promptly represent whole pixels all to drive with static schema.
When drive pattern is looked frame F by static state
M-1Be converted to and look frame F dynamically
mThe time, count value Val reduces, and looks frame F
M+1, F
M+2Count value Val little by little reduces, and therefore, multiplexer 253 is by looking more 0 the drive pattern table 252 conduct output that is denoted as to be arranged in the selection of frame ground, so as to reducing the pixel quantity that drives with static schema gradually.When count value Val arrives minimum value, promptly represent whole pixels all to drive with dynamic mode.
In addition, another counter 254 is constantly to switch a son to look frame switching signal S during two sons looking frame are looked frame
H/LThe position accurate.
Moreover, one address of corresponding each pixel of drive pattern table 252 is can look frame every one promptly to change once, and for example when drive pattern table 252 was square matrix, promptly rotatable 90 spent, each pixel produces fixing pattern with the position of different driving mode in the block in the time of can avoiding show image to change; And when drive pattern table 252 is formed by the pixels of most row, then can be arbitrarily or the position of conversion row in proper order, with each pixel in the change block with the position of different driving mode.In addition, drive pattern table 252 described herein can also replace by a random number generation table, and promptly the location of pixels that drives with static schema/dynamic mode in the block is unfixing.
Referring again to shown in Figure 8, GTG change-over circuit 26 comprises a multiplexer 261, one dynamic high gray table 262, a dynamically low GTG table 263 and a static GTG table 264.Wherein, static GTG table 264 is to drive pairing luma data in order to inquire pixel with static schema, and dynamically high gray table 262 is to drive pairing luma data in order to inquire pixel with dynamic mode with dynamically low GTG table 263.Usually, static GTG table 264 is the GTGs corresponding to the raw video video signal data; Dynamically high gray table 262 GTG than the raw video video signal data is bright; Dynamically low GTG table 263 GTG than the raw video video signal data be secretly, or than the GTG value of black.
In another embodiment, as shown in figure 11, static GTG table 264 also can change with a static high gray table 265 and a static low GTG table 266 to be realized, promptly in the static drive pattern, also the type of drive with similar dynamic mode drives pixel, and only static high gray table 265 can be less with the GTG difference of static low GTG table 266.In this, multiplexer 261 is according to the output pixel drive pattern switching signal S of drive pattern table 252
MuxSelect static high gray table 265, static low GTG table 266, dynamically high gray table 262 and dynamically low GTG table 263 wherein a luma data that is inquired as output.When a certain location of pixels selected static schema to drive, multiplexer 261 was looked frame switching signal S according to son
H/LSuccessively choose luma data that static high gray table 265 and static low GTG table 266 inquired in during one is looked frame as output; When a certain location of pixels selected dynamic mode to drive, multiplexer 261 was looked frame switching signal S according to son
H/LSuccessively choose luma data that dynamic high gray table 262 and dynamically low GTG table 263 inquired in during one is looked frame as output.
Figure 12 is an enforcement aspect that discloses GTG change-over circuit 26 among Figure 11, as shown in figure 12, GTG change-over circuit 26 more comprises a GTG table source (LUT pool) 267, GTG table source 267 be store most GTG tables for dynamic high gray table 262, dynamically low GTG table 263, static high gray table 265, read with static low GTG table 266, so as to by picture, line by line, by row or by pixel ground upgrade dynamic high gray table 262, dynamically low GTG table 263, static high gray table 265, with static low GTG table 266.
In sum, because of foundation liquid crystal indicator of the present invention and image display method thereof, when first looks frame and second and looks drive pattern between frame and produce to change, promptly being adjusted at second drives with dynamic mode when looking frame and with the pixel quantity ratio that static schema drives, is not to allow whole pixels show that with dynamic mode or static schema second looks frame.Thus, can avoid violent suddenly change of image brightness when drive pattern produces transformation, can allow the user experience and produce surging less than image, and then the quality-improving that liquid crystal indicator and image thereof are shown.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the claim scope of the present invention its equivalent modifications of carrying out or change.
Claims (15)
1, a kind of image display method of liquid crystal indicator drives most pixels in order to show one first in regular turn when looking frame and one second and looking frame, it is characterized in that described method comprises:
Detecting described first looks the grayscale difference amount that frame and described second looks between frame and first looks the variation that frame and this second looked the drive pattern between frame to judge this;
According to the variation of described drive pattern, be adjusted at the described second described pixel quantity ratio that drives with a dynamic mode when looking frame and drive with a static schema; And
Output to the pairing most luma data of the described second described pixel when looking frame.
2, image display method as claimed in claim 1 is characterized in that, also shows that described second one the 3rd looks frame to a N and looks frame after looking frame, and wherein N is the natural number greater than 1; Described set-up procedure comprises:
When described drive pattern be converted to by described first dynamic mode of looking frame described second look the static schema of frame after, increase the described the 3rd gradually and look frame and look in the frame the described pixel quantity that drives with static schema to described N.
3, image display method as claimed in claim 1 is characterized in that, also shows that described second one the 3rd looks frame to a N and looks frame after looking frame, and wherein N is the natural number greater than 1, and described set-up procedure comprises:
When described drive pattern be converted to by described first static schema of looking frame described second look the dynamic mode of frame after, reduce the described the 3rd gradually and look frame and look in the frame the described pixel quantity that drives with static schema to described N.
4, image display method as claimed in claim 1 is characterized in that, described detection step comprises:
Looking frame and the described second luma data value of looking described pixel in the frame with described first subtracts each other to obtain most GTG differences;
Sum up described GTG difference to obtain a sum total difference; And
A more described sum total difference and a threshold value are judged signal to produce drive pattern conversion, look the variation that frame and described second is looked the described drive pattern between frame so as to judging described first.
5, image display method as claimed in claim 1 is characterized in that, described output step comprises:
Inquire described second according to a static GTG table and look the pairing luma data of pixel described in the frame;
Inquire described second according to a dynamic high gray table and a dynamically low GTG table and look the pairing luma data of pixel described in the frame; And
Select one of them output as described luma data according to a drive pattern table by described static GTG table, described dynamic high gray table and described dynamically low GTG table, wherein said drive pattern table is to record described second to look pixel described in the frame with static schema and the information that drives with dynamic mode.
6, image display method as claimed in claim 1 is characterized in that, described output step comprises:
Inquire described second according to a static high gray table and a static low GTG table and look the pairing luma data of pixel described in the frame;
Inquire described second according to a dynamic high gray table with a dynamically low GTG table and look the corresponding luma data of pixel described in the frame; And
Select one of them output as described luma data according to a drive pattern table by described static high gray table, the low GTG table of described static state, described dynamic high gray table and described dynamically low GTG table, wherein said drive pattern table is to record described second to look pixel described in the frame with static schema and the information that drives with dynamic mode.
7, image display method as claimed in claim 1 is characterized in that, described set-up procedure comprises:
Count described first look frame after look frame quantity to export a count value;
Select one of plurality of drive pattern list according to described count value, wherein said drive pattern table is to record described pixel with static schema and the information that drives with dynamic mode, and the ratio with static schema and the described pixel that drives with dynamic mode in each described drive pattern table is inequality; And
Export a pixel drive mode switching signal according to the information that selecteed described drive pattern table is write down.
8, a kind of liquid crystal indicator is characterized in that, comprises:
Most pixels are looked frame and one second and are looked frame data in order to show one first, and wherein the described pixel of part is that the described pixel of remainder is to drive with a static schema with dynamic mode driving; And
One control circuit drives the described pixel quantity ratio that drives with described static schema in order to decision with described dynamic mode.
9, liquid crystal indicator as claimed in claim 8 is characterized in that, described control circuit comprises:
One testing circuit is looked frame and described second and is looked a grayscale difference amount between frame to judge that described first looks frame and described second and look the variation of the drive pattern between frame to export a drive pattern variable signal in order to detect described first;
One adjusts circuit, electrically connects described testing circuit with according to described drive pattern variable signal, is adjusted at the described second described pixel quantity ratio that drives with a dynamic mode when looking frame and drive with a static schema; And
One GTG change-over circuit electrically connects described adjustment circuit, and exports the corresponding luma data of each described pixel according to described pixel quantity ratio.
10, liquid crystal indicator as claimed in claim 9 is characterized in that, also shows that described second one the 3rd looks frame to a N and looks frame after looking frame, and wherein N is the natural number greater than 1; Described adjustment circuit be when be converted to by described first dynamic mode of looking frame by described drive pattern described second look the static schema of frame after, increase the described the 3rd gradually and look frame and look the described pixel quantity that frame drives with static schema to described N.
11, liquid crystal indicator as claimed in claim 9 is characterized in that, also shows that described second one the 3rd looks frame to a N and looks frame after looking frame, and wherein N is the natural number greater than 1; Described adjustment circuit be when described drive pattern be converted to by described first static schema of looking frame described second look the dynamic mode of frame after, reduce the described the 3rd gradually and look frame and look the described pixel quantity that frame drives with static schema to described N.
12, liquid crystal indicator as claimed in claim 9, it is characterized in that, described testing circuit is to look frame and the described second luma data value of looking described pixel in the frame with described first to subtract each other to obtain most GTG differences, and sum up described GTG difference to obtain a sum total difference, and a more described sum total difference and a threshold value are judged signal to produce described drive pattern conversion, look the variation that frame and described second is looked the described drive pattern between frame so as to judging described first.
13, liquid crystal indicator as claimed in claim 9 is characterized in that, described GTG change-over circuit comprises:
One static GTG table is to look the pairing luma data of pixel described in the frame in order to inquire described second;
One dynamic high gray table is to look the pairing luma data of pixel described in the frame in order to inquire described second;
One dynamically low GTG table is to look the pairing luma data of pixel described in the frame in order to inquire described second; And
One multiplexer, select described static GTG table, described dynamic high gray table and described dynamically low one of them luma data that is inquired of GTG table as output according to a drive pattern table, wherein said drive pattern table is to record described second to look pixel described in the frame with static schema and the information that drives with dynamic mode.
14, liquid crystal indicator as claimed in claim 9 is characterized in that, described GTG change-over circuit comprises:
One static high gray table is looked the pairing luma data of pixel described in the frame in order to inquire described second;
One static low GTG table is looked the pairing luma data of pixel described in the frame in order to inquire described second;
One dynamic high gray table is looked the pairing luma data of pixel described in the frame in order to inquire described second;
One dynamically low GTG table is looked the pairing luma data of pixel described in the frame in order to inquire described second; And
One multiplexer, select described static high gray table, the low GTG table of described static state, described dynamic high gray table and a described dynamically low GTG table luma data that is inquired wherein as output according to a drive pattern table, wherein said drive pattern table is to record described second to look pixel described in the frame with static schema and the information that drives with dynamic mode.
15, liquid crystal indicator as claimed in claim 9 is characterized in that, described adjustment circuit comprises:
One counter, in order to count described first look frame after look frame quantity to export a count value;
The plurality of drive pattern list, in order to writing down described pixel with static schema and the information that drives with dynamic mode, the ratio with static schema and the described pixel that drives with dynamic mode in each described drive pattern table is inequality; And
One multiplexer, be according to described count value select described drive pattern table one to export a pixel drive mode switching signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100971316A CN101286303B (en) | 2007-04-13 | 2007-04-13 | LCD device and its image display process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100971316A CN101286303B (en) | 2007-04-13 | 2007-04-13 | LCD device and its image display process |
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| CN101286303A true CN101286303A (en) | 2008-10-15 |
| CN101286303B CN101286303B (en) | 2012-04-11 |
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| CN2007100971316A Expired - Fee Related CN101286303B (en) | 2007-04-13 | 2007-04-13 | LCD device and its image display process |
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| CN101546540B (en) * | 2009-04-29 | 2011-10-05 | 深圳华映显示科技有限公司 | Grey insertion method and drive circuit for LCD display |
| CN101833920B (en) * | 2009-03-13 | 2012-09-26 | 华映视讯（吴江）有限公司 | Drive circuit and grey insertion method for liquid crystal display |
| US8487848B2 (en) | 2008-10-02 | 2013-07-16 | Chunghwa Picture Tubes, Ltd. | Driving circuit and gray insertion method of liquid crystal display |
| CN105206233A (en) * | 2015-09-11 | 2015-12-30 | 京东方科技集团股份有限公司 | Driving mode switching method and module and display device |
| WO2016179867A1 (en) * | 2015-05-12 | 2016-11-17 | 深圳市华星光电技术有限公司 | Image display control method |
| CN106817753A (en) * | 2017-03-10 | 2017-06-09 | 广东欧珀移动通信有限公司 | A kind of background GTG that switches carries out method, device and the mobile terminal of power saving |
| CN109376096A (en) * | 2018-12-18 | 2019-02-22 | 深圳市华星光电技术有限公司 | Storage method, computer storage medium and the display device of data mapping tables |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4086030B2 (en) * | 2004-10-15 | 2008-05-14 | 松下電器産業株式会社 | Image display device |
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| CN101546540B (en) * | 2009-04-29 | 2011-10-05 | 深圳华映显示科技有限公司 | Grey insertion method and drive circuit for LCD display |
| US9898977B2 (en) | 2015-05-12 | 2018-02-20 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Method for controlling image display |
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| US9812080B2 (en) | 2015-09-11 | 2017-11-07 | Boe Technology Group Co., Ltd. | Driving mode switching method and module, and display device |
| WO2017041420A1 (en) * | 2015-09-11 | 2017-03-16 | 京东方科技集团股份有限公司 | Driving mode switching method and module, and display apparatus |
| CN105206233A (en) * | 2015-09-11 | 2015-12-30 | 京东方科技集团股份有限公司 | Driving mode switching method and module and display device |
| CN106817753A (en) * | 2017-03-10 | 2017-06-09 | 广东欧珀移动通信有限公司 | A kind of background GTG that switches carries out method, device and the mobile terminal of power saving |
| CN106817753B (en) * | 2017-03-10 | 2020-04-17 | Oppo广东移动通信有限公司 | Method and device for saving electricity by switching background gray scales and mobile terminal |
| CN109376096A (en) * | 2018-12-18 | 2019-02-22 | 深圳市华星光电技术有限公司 | Storage method, computer storage medium and the display device of data mapping tables |
| CN109376096B (en) * | 2018-12-18 | 2021-07-23 | Tcl华星光电技术有限公司 | Data mapping table storage method, computer storage medium and display device |
| CN110136645A (en) * | 2019-05-15 | 2019-08-16 | 昆山国显光电有限公司 | Display driving method, display drive apparatus and the display device of display panel |
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