CN101286303B - LCD device and its image display process - Google Patents
LCD device and its image display process Download PDFInfo
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- CN101286303B CN101286303B CN2007100971316A CN200710097131A CN101286303B CN 101286303 B CN101286303 B CN 101286303B CN 2007100971316 A CN2007100971316 A CN 2007100971316A CN 200710097131 A CN200710097131 A CN 200710097131A CN 101286303 B CN101286303 B CN 101286303B
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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 frame and a second frame are sequentially displayed. The method includes the following steps: detecting a gray-scale difference between the first frame and the second frame to judge the change of a driving mode between the first frame and the second frame; according to the change of driving modes, regulating the quantity proportion of the pixels driven by a dynamic mode and a static mode when the second frame is displayed; and a plurality of gray-scale data corresponding to the pixels 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, thereby enhancing 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 shorten the image data pulse at present with the mode that adds subframe (sub-frame); Type of being referred to as pulsed lcd technology; In the prior art common a kind of be to add a normal subframe that shows black (normally black), 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 same frame according to dynamic/static characteristics of frame to select for use dynamic/static schema to drive; Promptly when pixel will drive with dynamic mode, then realize, when pixel will drive with static schema, then must not insert other dark-coloured pictures with the method for aforementioned black plug (ash) picture.
As shown in Figure 1, adjacent two pixels 101 and 102, it receives luma data A and B respectively, and in same frame time (frame time) Tf, shows.See also Fig. 2, the image display technique of first kind of common class pulsed liquid-crystal apparatus is when pixel 101 and 102 receives luma data A and B in the prior art; Cooperate the image frequency doubling technology; Cover a normal subframe (normally black sub-frame) of deceiving that shows, for example a GTG value is 0 subframe, makes that pixel 101 and 102 is as shown in Figure 2; Only show respectively in the time that at preceding field luma data is the subframe of A and B, and in later half frame time, be black picture.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, because the black plug frame method of this prior art makes that pixel is only correct in the half the time and shows luma data, 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, in the prior art image display technique of second kind of common class pulsed liquid crystal indicator provide one do not influence the picture equivalent luminance method.See also Fig. 3.When pixel 101 and 102 was received luma data A and B, the method for this prior art let pixel 101 show subframe A ' and C in regular turn, and lets pixel 102 show subframe B ' and D in regular turn according to predetermined principle.Pixel 101 shows the mean flow rate of subframe A ' and C in frame time Tf, all showing that the brightness effects of luma data A is identical in the frame time Tf with direct among Fig. 1; And pixel 102 shows the mean flow rate of subframe B ' and D in frame time Tf, is all showing that the brightness effects of luma data B is identical in the frame time Tf with direct among Fig. 1.
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 producing subframe.For instance, according to Fig. 3 and Fig. 4, the second kind pulsed lcd technology of prior art can show that in regular turn luma data is 250 and 0 two subframes when a pixel-by-pixel basis is received an original luma data 150; And when a pixel-by-pixel basis is received an original luma data 151, show that in regular turn luma data is 255 and 0 two subframes.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 subframe and first subframe of collocation mutually, so that the comprehensive brightness effects of two subframes equals the brightness of original GTG value.And in original GTG value greater than 152 o'clock, then can be covered a luma data is 255 first subframe and corresponding second subframe, makes the comprehensive brightness effects of two subframes equal the brightness of original GTG value equally.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, then the GTG value C of subframe will equate with D and be all 0; If the original GTG value of pixel 101 and 102 is all greater than 152, then the GTG value A ' of subframe will equate with B ' and be all 255.These two kinds of situation 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 working as image is static moment by dynamic transition, and 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 making 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 a kind of liquid crystal indicator and image display method thereof being provided, avoiding the generation of the problems referred to above and improve above-mentioned shortcoming, in fact is an important problem.
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; Drive most pixels when showing one first frame and one second frame in regular turn, said method comprises: a grayscale difference amount that detects said first frame and said second interframe is with the variation of a drive pattern of judging this first frame and this second interframe; According to the variation of said drive pattern, the said pixel quantity ratio that drives with a dynamic mode when being adjusted at said second frame and drive with a static schema; And the pairing most luma data of said pixel when being output in said second frame.
For reaching above-mentioned purpose, according to a kind of liquid crystal indicator of the present invention, be in order to most pixels of driving when showing one first frame and one second frame in regular turn, said liquid crystal indicator comprises a testing circuit, an adjustment circuit and a GTG change-over circuit.To be the grayscale difference amount that detects first frame and second interframe change the judgement signal with the variation of a drive pattern of judging first frame and second interframe to export a drive pattern to testing circuit; The adjustment circuit is to electrically connect testing circuit with according to the drive pattern variable signal, drives the pixel quantity ratio that drives with a static schema that reaches with a dynamic mode when being adjusted at second frame; And the GTG change-over circuit is to electrically connect the adjustment circuit, and according to the corresponding luma data of said each pixel of pixel quantity ratio output.
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 one first frame and one second 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 the drive pattern of first frame and second interframe produces transformation; Driving the pixel quantity ratio that reaches with static schema driving with a dynamic mode when promptly being adjusted at second frame, is not to let whole pixels show second frame with dynamic mode or static schema.Thus, can avoid violent suddenly change of image brightness when drive pattern produces transformation, can let 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
Characteristic 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 the synoptic diagram of adjustment 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 following among the figure:
101,102: pixel
110: the table of comparisons
Tf: frame time
S01～S04: the step of the image display method of liquid crystal indicator
2: liquid crystal indicator
20: frame buffer zone
21: the frame buffer zone controller
22: the input block
23: output buffer
24: testing circuit
25: the adjustment 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: the subframe switching signal
S
Mux: the pixel drive mode switching signal
Val: count value
Embodiment
Below will liquid crystal indicator and image display method thereof according to preferred embodiment of the present invention be described with reference to correlative type.
At first, please with reference 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 when showing one first frame and one second frame in regular turn, driving most pixels according to the image display method of a kind of liquid crystal indicator of preferred embodiment of the present invention, said image display method comprises step S01～S04.
At step S01, a grayscale difference amount that at first detects first frame and second interframe is with the variation of a drive pattern of judging first frame and second interframe.
At step S02, then, drive the pixel quantity ratio that drives with a static schema that reaches with a dynamic mode when being adjusted at second frame according to the variation of drive pattern.
At step S03, the pairing most luma data of pixel when exporting second frame.
At step S04, the pairing most luma data of pixel drive a display panels during according to second frame.
Change static frames into by dynamic frame or when video signal changes dynamic frame into by static frames in order to improve in the existent technique when signal of video signal; Let the brightness of picture that unexpected variation is also arranged because of the variation of frame drive pattern easily, and then produced the perceptible surging of user.Therefore; The image display method of present embodiment is when the frame drive pattern changes; Reach the pixel quantity ratio that drives with static schema with the dynamic mode driving in the adjustment next frame, or the pixel quantity that drives with dynamic mode in the adjustment next frame reaches the pixel quantity with the static schema driving, is not only can let all pixels of next frame all drive or all drive with static schema with dynamic mode like existent technique; But let pixel little by little drive or little by little drive with static schema with dynamic mode; Thereby when the frame drive pattern changes, 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 said 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 said 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 the base unit of the pixel quantity ratio that drives with dynamic mode and drive with static schema as adjustment (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 to be the square matrix of a 2x2, and certainly, the quantity of square matrix is also unrestricted, also can be 8x8 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 example is explained with the square matrix that a block is 2x2.
Shown in Fig. 7 A, be to show that each pixel in the block all drives with dynamic mode in first frame.Shown in Fig. 7 B; When step S01 judges drive pattern and converts the second static frame into by dynamic first frame; Step S02 increases the pixel quantity that drives with static schema in second 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 one the 3rd frame to the 5th frame behind second frame; Wherein when handling the 3rd frame (Fig. 7 C); Step S02 increases in the 3rd frame to the five frames pixel quantity that drives with static schema gradually, and 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 frame, pixels whole in the block all drive with static schema.
Note that the appearance of frame order 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; When just being dynamic frame by static conversion, the drive pattern of pixel changes ratio in the block, and then the direction by Fig. 7 E to Fig. 7 A changes.Shown in Fig. 7 E; Be to show that each pixel in the block all drives with static schema in first frame; Shown in Fig. 7 D, when step S01 judged drive pattern and converts dynamic second frame into by first frame of static state, step S02 reduced the pixel quantity that drives with static schema in second frame; It is the pixel that originally is marked as 4 in each block to be changed with dynamic mode 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 the 3rd frame to the five frames behind second frame; Wherein when handling the 3rd frame; Step S02 reduces the pixel quantity that drives with static schema in the 3rd frame to the five frames gradually, and 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 frame (like Fig. 7 A), all pixel all drives with dynamic mode.
In addition, if in the driving ratio of adjustment frame pixel, 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 frame change again, then as long as will be dynamically/the reverse adjustment of static pixels quantitative proportion.
For example shown in Fig. 7 A to Fig. 7 C; The drive pattern of frame is to change static schema into by dynamic mode earlier; Yet but drive pattern changes dynamic mode into when the 4th 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 frame is when changing dynamic mode into by static schema earlier, if the drive pattern of frame changes again when driving with static schema, as long as increase the pixel quantity that drives with static schema in each block in the way that changes.
Secondly, please with reference to Fig. 8 to shown in Figure 11, will lift an embodiment and specify the foregoing liquid crystal display packing and how to operate on a liquid crystal indicator.
As shown in Figure 8, be to comprise a frame buffer zone (frame buffer) 20, one frame buffer zone controller (frame buffer controller) 21, one input block (input buffer) 22, one output buffer (output buffer) 23, one testing circuit 24, an adjustment circuit 25 and a GTG change-over circuit 26 according to a liquid crystal indicator 2 of preferred embodiment of the present invention.
Frame data are handled for testing circuit 24 and GTG change-over circuit 26.
As GTG change-over circuit 26 processed frame F
mThe time, testing circuit 24 is according to frame F with adjustment circuit 25
M-1With frame F
mBetween drive pattern change and be adjusted at frame F
mIn the pixel quantity ratio that drives and drive with static schema with dynamic mode, or adjustment frame F
mIn the pixel quantity that drives with dynamic mode and the pixel quantity that drives with static schema.
Frame data are 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 in the frame data is write 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 with frame F
M-1With 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, so as to judgment frame F
M-1With frame F
mBetween drive pattern whether change.
As the frame F that drives by dynamic mode
M-1Convert the frame F that drives by static schema into
mThe time, signal S is judged in the drive pattern conversion
D/SBe to be positioned at one first standard, as frame F by static state
M-1Convert dynamic frame F into
mThe time drive pattern conversion judge signal S
D/SBe to be positioned at one second standard.
As shown in Figure 9, adjustment circuit 25 comprises a counter (frame counter) 251, plurality of drive pattern list (matrix tables) 252, one multiplexer 253 and another counter 254.Wherein, counter 251 is counts F
mAfter number of frames 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 said 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 every time at a distance from a frame (for example being 60Hz) then adds 1 with as exporting with count value Val; If signal S is judged in the drive pattern conversion
D/SIn second punctual, counter 251 is initialized to maximal value, and every time at a distance from a frame then subtracts 1 with as exporting with count value Val.
Drive pattern table 252 is big or small consistent with block; The square matrix that with the block is 2x2 is an example, and adjustment circuit 25 is to have four drive pattern tables 252, and each drive pattern table 252 information recorded is shown in Figure 10 A to Figure 10 D; Wherein, In drive pattern table 252, being denoted as 1 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 dynamic frame F
M-1Convert static frame F into
mThe time, count value Val increases, and along with frame F
M+1, F
M+2Count value Val little by little increases, and therefore, multiplexer 253 is that more 1 the drive pattern table 252 conduct output that is denoted as is arranged in selecting by 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.
As the frame F of drive pattern by static state
M-1Convert dynamic frame F into
mThe time, count value Val reduces, and along with frame F
M+1, F
M+2Count value Val little by little reduces, and therefore, multiplexer 253 is that more 0 the drive pattern table 252 conduct output that is denoted as is arranged in selecting by 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 during two sub-frame of a frame, constantly to switch a subframe switching signal S
H/LThe position accurate.
Moreover; One address of corresponding each pixel of drive pattern table 252 is whenever promptly to change once at a distance from a frame, 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 the location of pixels that promptly drives with static schema/dynamic mode in the block is unfixing.
Please refer again to shown in Figure 8ly, GTG change-over circuit 26 comprises a dynamically low GTG table 263 of a multiplexer 261, one dynamic high gray table 262, one 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; 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 come driving pixels with the type of drive of similar dynamic mode, 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, dynamic high gray table 262 and dynamically low one of them luma data that is inquired of GTG table 263 as output.When a certain location of pixels selected static schema to drive, multiplexer 261 was according to subframe switching signal S
H/LIn an image duration, successively choose luma data that static high gray table 265 and static low GTG table 266 inquired as output; When a certain location of pixels selected dynamic mode to drive, multiplexer 261 was according to subframe switching signal S
H/LIn an image duration, successively choose luma data that dynamic high gray table 262 and dynamically low GTG table 263 inquired as output.
Figure 12 is an enforcement aspect that discloses GTG change-over circuit 26 among Figure 11; 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 the drive pattern of first frame and second interframe produces transformation; Driving the pixel quantity ratio that reaches with the static schema driving with dynamic mode when promptly being adjusted at second frame, is not to let whole pixels show second frame with dynamic mode or static schema.Thus, can avoid violent suddenly change of image brightness when drive pattern produces transformation, can let 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 is merely 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 (12)
1. the image display method of a liquid crystal indicator drives most pixels when showing one first frame and one second frame in regular turn, it is characterized in that said method comprises:
A grayscale difference amount that detects said first frame and said second interframe is with the variation of a drive pattern of judging this first frame and this second interframe;
According to the variation of said drive pattern, the said pixel quantity ratio that drives with a dynamic mode when being adjusted at said second frame and drive with a static schema; And
According to said pixel quantity ratioThe pairing majority of a said pixel luma data when being output in said second frame; Wherein, said detection step comprises:
The luma data value of said pixel in said first frame and said second frame is subtracted each other to obtain most GTG differences;
Sum up said GTG difference to obtain a sum total difference; And
A more said sum total difference and a threshold value are judged signal to produce drive pattern conversion, so as to the variation of the said drive pattern of judging said first frame and said second interframe.
2. image display method as claimed in claim 1 is characterized in that, behind said second frame, also shows one the 3rd frame to N frame, and wherein N is the natural number greater than 1; Said set-up procedure comprises:
After said drive pattern converts the static schema of said second frame into by the dynamic mode of said first frame, increase the said pixel quantity that drives with static schema in said the 3rd frame to the said N frame gradually.
3. image display method as claimed in claim 1 is characterized in that, behind said second frame, also shows one the 3rd frame to N frame, and wherein N is the natural number greater than 1, and said set-up procedure comprises:
After said drive pattern converts the dynamic mode of said second frame into by the static schema of said first frame, reduce the said pixel quantity that drives with static schema in said the 3rd frame to the said N frame gradually.
4. image display method as claimed in claim 1 is characterized in that, said output step comprises:
Inquire the pairing luma data of pixel described in said second frame according to a static GTG table;
Inquire the pairing luma data of pixel described in said second frame according to a dynamic high gray table and a dynamically low GTG table; And
Select one of them output as said luma data according to a drive pattern table by said static GTG table, said dynamic high gray table and said dynamically low GTG table, wherein said drive pattern table is to record pixel described in said second frame with static schema and the information that drives with dynamic mode.
5. image display method as claimed in claim 1 is characterized in that, said output step comprises:
Inquire the pairing luma data of pixel described in said second frame according to a static high gray table and a static low GTG table;
Inquire the corresponding luma data of pixel described in said second frame according to a dynamic high gray table with a dynamically low GTG table; And
Select one of them output as said luma data according to a drive pattern table by said static high gray table, the low GTG table of said static state, said dynamic high gray table and said dynamically low GTG table, wherein said drive pattern table is to record pixel described in said second 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, said set-up procedure comprises:
Count said first frame after number of frames to export a count value;
Select one of plurality of drive pattern list according to said count value; Wherein said drive pattern table is to record said pixel with static schema and the information that drives with dynamic mode, and the ratio with static schema and the said pixel that drives with dynamic mode in each said drive pattern table is inequality; And
Export a pixel drive mode switching signal according to selecteed said drive pattern table institute information recorded.
7. a liquid crystal indicator is characterized in that, comprises:
A most pixel, in order to show one first frame and one second frame data, it is to drive with a dynamic mode that said pixel is divided in the center, the said pixel of remainder is to drive with a static schema; And
One control circuit drives the said pixel quantity ratio that drives with said static schema in order to decision with said dynamic mode;
One testing circuit; In order to the grayscale difference amount that detects said first frame and said second interframe with the variation of a drive pattern of judging said first frame and said second interframe to export a drive pattern variable signal; Said testing circuit is that the luma data value of said pixel in said first frame and said second frame is subtracted each other to obtain most GTG differences; And sum up said GTG difference to obtain a sum total difference; And a more said sum total difference and a threshold value are judged signal to produce the conversion of said drive pattern, so as to the variation of the said drive pattern of judging said first frame and said second interframe;
One adjustment circuit electrically connects said testing circuit with according to said drive pattern variable signal, the said pixel quantity ratio that drives with a dynamic mode when being adjusted at said second frame and drive with a static schema; And
One GTG change-over circuit electrically connects said adjustment circuit, and exports the corresponding luma data of each said pixel according to said pixel quantity ratio.
8. liquid crystal indicator as claimed in claim 7 is characterized in that, behind said second frame, also shows one the 3rd frame to N frame, and wherein N is the natural number greater than 1; Said adjustment circuit is after converting the static schema of said second frame by said drive pattern into by the dynamic mode of said first frame, increases the said pixel quantity that said the 3rd frame to said N frame drives with static schema gradually.
9. liquid crystal indicator as claimed in claim 7 is characterized in that, behind said second frame, also shows one the 3rd frame to N frame, and wherein N is the natural number greater than 1; Said adjustment circuit is after said drive pattern converts the dynamic mode of said second frame into by the static schema of said first frame, reduces the said pixel quantity that said the 3rd frame to said N frame drives with static schema gradually.
10. liquid crystal indicator as claimed in claim 7 is characterized in that, said GTG change-over circuit comprises:
One static GTG table is in order to inquire the pairing luma data of pixel described in said second frame;
One dynamic high gray table is in order to inquire the pairing luma data of pixel described in said second frame;
One dynamically low GTG table is in order to inquire the pairing luma data of pixel described in said second frame; And
One multiplexer; Select said static GTG table, said dynamic high gray table and said 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 pixel described in said second frame with static schema and the information that drives with dynamic mode.
11. liquid crystal indicator as claimed in claim 7 is characterized in that, said GTG change-over circuit comprises:
One static high gray table is in order to inquire the pairing luma data of pixel described in said second frame;
One static low GTG table is in order to inquire the pairing luma data of pixel described in said second frame;
One dynamic high gray table is in order to inquire the pairing luma data of pixel described in said second frame;
One dynamically low GTG table is in order to inquire the pairing luma data of pixel described in said second frame; And
One multiplexer; Select the low GTG table of said static high gray table, said static state, said dynamic high gray table and the said dynamically low GTG table luma data that inquired wherein as output according to a drive pattern table, wherein said drive pattern table is to record pixel described in said second frame with static schema and information with the dynamic mode driving.
12. liquid crystal indicator as claimed in claim 7 is characterized in that, said adjustment circuit comprises:
One counter, in order to count said first frame after number of frames to export a count value;
The plurality of drive pattern list, in order to writing down said pixel with static schema and the information that drives with dynamic mode, the ratio with static schema and the said pixel that drives with dynamic mode in each said drive pattern table is inequality; And
One multiplexer is to select one of said drive pattern table to export a pixel drive mode switching signal according to said count value.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI402812B (en) | 2008-10-02 | 2013-07-21 | Chunghwa Picture Tubes Ltd | Driving cricuit and gray insertion method of liquid crystal 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 |
| 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 |
| CN104821160B (en) | 2015-05-12 | 2017-09-12 | 深圳市华星光电技术有限公司 | Method for controlling image to show |
| CN105206233B (en) * | 2015-09-11 | 2018-05-18 | 京东方科技集团股份有限公司 | A kind of drive pattern switching method and module and display device |
| 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 |
| 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 |
| CN110136645B (en) * | 2019-05-15 | 2021-04-30 | 昆山国显光电有限公司 | Display driving method and device of display panel and display device |
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| WO2006041151A1 (en) * | 2004-10-15 | 2006-04-20 | Matsushita Electric Industrial Co., Ltd. | Image display method and image display device |
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| WO2006041151A1 (en) * | 2004-10-15 | 2006-04-20 | Matsushita Electric Industrial Co., Ltd. | Image display method and image display device |
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