CN101853638A - Method for improving image quality of liquid crystal display device and related device thereof - Google Patents
Method for improving image quality of liquid crystal display device and related device thereof Download PDFInfo
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Abstract
The invention discloses a method for improving the image quality of a liquid crystal display device. The method comprises the following steps of: receiving an input image; producing a plurality of continuous pictures with a preset cycle number according to the input image, wherein the gray scale number of the input image is more than that of the plurality of continuous pictures; setting the number of picture sub-pixels which need adding values in a plurality of picture sub-pixels corresponding to each display unit in the plurality of continuous pictures according to a least significant bit value of a gray scale value of a sub-pixel of the input image; and making the number of the picture sub-pixels which need adding values and correspond to positive display units in each picture equivalent to the number of picture sub-pixels which need adding values and correspond to negative display units according to the number of picture sub-pixels which need adding values in the plurality of continuous pictures and the polarities of a plurality of display units.
Description
Technical field
The present invention relates to a kind of method and relevant apparatus thereof that is used for promoting the image quality of liquid crystal indicator, relate in particular to a kind of image processing method and relevant apparatus thereof that can increase the image gray-scale level effect of liquid crystal indicator and reduce the image flicker phenomenon.
Background technology
Along with the progress of science and technology, the function of information products is increasingly sophisticated, external form is but compact day by day.Wherein, many by the product that liked by people, for example mobile phone, PDA(Personal Digital Assistant), game machine etc. nearly all are as the main method that presents visual information with liquid crystal indicator.Compared to the display of other kinds, in light weight, advantages such as thickness is little, reasonable price that liquid crystal indicator has.At present, in hand-held or portable information products field, seem rare other imaging technique and can replace liquid crystal indicator.
Please refer to the 1st figure, the 1st figure is the distribution schematic diagram of liquid crystal display in the known liquid crystal indicator 10.Liquid crystal indicator 10 generally includes the liquid crystal display (display element) or the sub-pixel (pixel) of many marshallings.Color liquid crystal display arrangement then utilizes liquid crystal display collocation red (R), green (G) that it comprised, the colored filter of blue (B) three kinds of primary colors, and goes out other different colors by three kinds of combination of primaries.When the grey exponent number that can show when single liquid crystal display increases, just can be by the color that three kinds of primary colors can be combined into sizable multiple increase.For instance, if the grey exponent number of single liquid crystal display can represent that the grey exponent number of its correspondence is 256 with one 8 binary digit, then the color combination that can make via the colored filter of three kinds of primary colors in theory can arrive 256 * 256 * 256 (=16,777,216) plant.
Please continue with reference to the 1st figure, the inside of liquid crystal display includes an electrode special, is used to provide the optical characteristics of voltage with the control liquid crystal material, by the polarization angle of modulation light, carries out the function of optical switch.Now the liquid crystal display of lifting general common normality light tight (normally black) is an example, heals when big with respect to the voltage difference of common electrode when the voltage of the electrode special in the liquid crystal display, and the transmittance of liquid crystal display is just higher.Therefore, when the sub-pixel data of digital picture is imported liquid crystal indicator 10 in regular turn, liquid crystal indicator 10 just can in the liquid crystal display corresponding to this sub-pixel, be adjusted the voltage swing of its electrode special according to the numerical values recited of the sub-pixel data of digital picture.Thus, liquid crystal indicator just can and then present complete digital picture by the transmittance of each liquid crystal display of control.In other words, liquid crystal indicator 10 is exactly the image that presents outside input by the voltage of each liquid crystal display electrode special of control.Because all technology and cost factor, the pairing grey exponent number of the liquid crystal indicator of different designs is just different, and general modal color liquid crystal display arrangement is that three kinds of primary colors of red, green, blue all each GTG numerical table with 4 to 8 positions show.The image quality of the liquid crystal indicator that the ash exponent number is less is obviously relatively poor.
Yet, each is unfixing from the figure place that sub-pixel data comprised of digital picture, when figure place that the figure place of sub-pixel data can show greater than liquid crystal display, the common practices of known technology is exactly with additional least significant bit (LSB) value (least significant bits in the sub-pixel data, LSB) directly delete need not, use the figure place that makes the sub-pixel data after deleting and equal the figure place that liquid crystal display can show.Thus, the shown image quality of liquid crystal indicator just can significantly reduce.
In addition, liquid crystal display must be able to be adjusted the polarity of voltage of its electrode special, and its purpose makes liquid crystal material can remain on normal mode of operation.Adjust the method for the polarity of voltage of liquid crystal display, be make electrode special with respect to the potential value of common electrode on the occasion of and negative value between change back and forth.Thus, can avoid making liquid crystal material that irreversible phase transformation takes place, influence its effect as an optical switch.Please refer to 2A to 2B and scheme, 2A to 2B figure is the polarity of voltage distribution schematic diagram of the liquid crystal display that comprised of a single-point reversible type (dot inversion) plane liquid crystal indicator 20.In 2A figure and 2B figure, the polarity of voltage of "+" expression liquid crystal display is a positive polarity, and the polarity of voltage of "-" expression liquid crystal display is a negative polarity, and each liquid crystal display just switches between these two kinds of polarity.Data of common every demonstration, liquid crystal display just switches once its polarity of voltage.It should be noted that the polarity of voltage distribution has specific standard because of the different designs principle of liquid crystal indicator.For example, to distribute be to be a group with single liquid crystal display to the polarity of voltage of single-point reversible type plane liquid crystal indicator 20.That is, a liquid crystal display DE_x, y must with liquid crystal display DE_x, the polarity of voltage of four adjacent liquid crystal displays of y is opposite.In addition, please refer to 3A figure, 3A figure is the distribution schematic diagram of the liquid crystal display that comprised of a two point reversible type (two-dot inversion) plane liquid crystal indicator 30.The obvious characteristics of double-point inversion formula plane liquid crystal indicator 30 is that any source electrode cabling wherein (all must be responsible for carrying the data of two row (column) as the S1 among the 3A figure～S3).And the grid cabling of turn enable odd number and even number (as the G1 among the 3A figure～G7), makes picture data can correctly write corresponding liquid crystal display.Please refer to 3B figure and 3C figure, 3B figure and 3C figure are the polarity of voltage distribution schematic diagram of the liquid crystal display that comprised of a two point reversible type plane liquid crystal indicator 30.The type of drive of double-point inversion formula is common in the plane liquid crystal indicator that adopts bigrid (dual gate), it is a group with two liquid crystal displays, as the DEG_x of group, y, same group keeps identical polarity of voltage, and opposite with the polarity of voltage of adjacent group.Shown polarity of voltage distributed in 3B figure and 3C figure, the edge part of plane liquid crystal indicator 30 also may present with slightly different polarity of voltage distribution mode.Please refer to 3D figure and 3E figure, 3D figure and 3E figure are the another kind of polarity of voltage distribution schematic diagram of the liquid crystal display that comprised of a two point reversible type plane liquid crystal indicator 30.
Summary of the invention
Therefore fundamental purpose of the present invention promptly is to provide a kind of method and relevant image processor and liquid crystal indicator thereof that is used for promoting the image quality of a liquid crystal indicator.
The present invention discloses a kind of method that is used for promoting the image quality of a liquid crystal indicator, one panel of this liquid crystal indicator comprises a plurality of display units, each display unit switches on a positive polarity and a negative polarity, this method includes reception one input picture, this input picture comprises a plurality of input picture sub-pixels, corresponding to these a plurality of display units; According to this input picture, produce a plurality of continuous pictures of a default period, each picture of these a plurality of continuous pictures comprises a plurality of picture sub-pixels, and corresponding to these a plurality of display units, the grey exponent number of this input picture is greater than the grey exponent number of these a plurality of continuous pictures; Least significant bit (LSB) value (least significant bits according to a GTG value of the pairing input picture sub-pixel of each display unit of these a plurality of display units, LSB), set in these a plurality of continuous pictures corresponding to the number that needs value added picture sub-pixel in a plurality of picture sub-pixels of this each display unit; And, make in each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be equal to and need the number of value added picture sub-pixel corresponding to the display unit of negative polarity according to the number that needs value added picture sub-pixel in these a plurality of continuous pictures and the polarity of these a plurality of display units.
The present invention discloses a kind of image processor that is used for promoting the image quality of a liquid crystal indicator in addition, one panel of this liquid crystal indicator comprises a plurality of display units, each display unit switches on a positive polarity and a negative polarity, this image processor includes an input block, be used for receiving an input picture, this input picture comprises a plurality of input picture sub-pixels, corresponding to these a plurality of display units; One pretreatment unit, be used for according to this input picture, produce a plurality of continuous pictures of a default period, each picture of these a plurality of continuous pictures comprises a plurality of picture sub-pixels, corresponding to these a plurality of display units, the grey exponent number of this input picture is greater than the grey exponent number of these a plurality of continuous pictures; One value added adjustment unit, be used for a least significant bit (LSB) value (least significant bits according to a GTG value of the pairing input picture sub-pixel of each display unit of these a plurality of display units, LSB), set in these a plurality of continuous pictures corresponding to the number that needs value added picture sub-pixel in a plurality of picture sub-pixels of this each display unit; An and polarity adjustment unit, be used for according to needing the number of value added picture sub-pixel and the polarity of these a plurality of display units in this a plurality of continuous pictures, make in each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be equal to number corresponding to the display unit of negative polarity and picture sub-pixel that need be value added.
The present invention discloses a kind of liquid crystal indicator in addition, includes a panel, comprises a plurality of display units, and each display unit switches on a positive polarity and a negative polarity; And an image processor, include an input block, be used for receiving an input picture, this input picture comprises a plurality of input picture sub-pixels, corresponding to these a plurality of display units; One pretreatment unit, be used for according to this input picture, produce a plurality of continuous pictures of a default period, each picture of these a plurality of continuous pictures comprises a plurality of picture sub-pixels, corresponding to these a plurality of display units, the grey exponent number of this input picture is greater than the grey exponent number of these a plurality of continuous pictures; One value added adjustment unit, be used for a least significant bit (LSB) value (least significant bits according to a GTG value of the pairing input picture sub-pixel of each display unit of these a plurality of display units, LSB), set in these a plurality of continuous pictures corresponding to the number that needs value added picture sub-pixel in a plurality of picture sub-pixels of this each display unit; An and polarity adjustment unit, be used for according to needing the number of value added picture sub-pixel and the polarity of these a plurality of display units in this a plurality of continuous pictures, make in each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be equal to number corresponding to the display unit of negative polarity and picture sub-pixel that need be value added.
Description of drawings
The 1st figure is the distribution schematic diagram of the liquid crystal display of a typical liquid crystal indicator.
2A to 2B figure is the polarity of voltage distribution schematic diagram of the liquid crystal display that comprised of single-point reversible type liquid crystal indicator.
3A to 3E figure is the distribution and the polarity of voltage distribution schematic diagram thereof of the liquid crystal display that comprised of double-point inversion formula liquid crystal indicator.
The 4th figure is the synoptic diagram according to the method for displaying image of liquid crystal indicator of the present invention.
5A to 5C figure is the synoptic diagram that is used for the value added distribution of polarity of a single-point reversible type plane liquid crystal indicator according to the present invention.
6A to 6C figure is the synoptic diagram according to the value added distribution of polarity of double-point inversion formula of the present invention plane liquid crystal indicator.
7A figure is the synoptic diagram according to liquid crystal indicator of the present invention.
7B figure is the synoptic diagram according to image processor of the present invention.
[main element symbol description]
10,70 liquid crystal indicators
20 single-point reversible type liquid crystal indicators
30 double-point inversion formula liquid crystal indicators
40 method for displaying image
400,402,404,406,408,410 steps
72 image processors
700 input blocks
702 pretreatment units
704 value added adjustment units
706 polarity adjustment units
720 cutting units
722 allocation units
The INIMG input picture
DE_x, the y liquid crystal display
DEG_x, y liquid crystal display group
FRAME1～FRAME_K continuous pictures
The PANEL1 panel
S1～S3 source electrode cabling
G1～G7 grid cabling
Embodiment
General liquid crystal indicator is because of the difference of its structure and design concept, and respectively has its special polarity of voltage to distribute, and therefore specific reciprocation takes place between meeting and the video data, and visually generation is as the ill effect of flicker noise.The present invention distributes according to the polarity of voltage of liquid crystal indicator, being created in the image display effect that does not visually almost have flicker noise, and can increase the GTG of image.
Please refer to the 4th figure, the 4th figure is the synoptic diagram that is used for the method for displaying image 40 of a liquid crystal indicator according to the embodiment of the invention.Method for displaying image 40 can increase the GTG performance of each liquid crystal display of liquid crystal indicator, and it includes following steps:
Step 400: beginning.
Step 402: receive an input image data INIMG, input image data INIMG includes a plurality of input picture sub-pixels, corresponding to a plurality of display units that liquid crystal indicator comprised.
Step 404: according to input image data INIMG, producing period is continuous pictures FRAME_1～FRAME_K of K, each picture of continuous pictures FRAME_1～FRAME_K includes a plurality of picture sub-pixels, corresponding to these a plurality of display units, and the grey exponent number of input image data INIMG is greater than the grey exponent number of continuous pictures FRAME_1～FRAME_K.
Step 406: according to a least significant bit (LSB) value (the least significant bits of a GTG value of the pairing input picture sub-pixel of each display unit of these a plurality of display units, LSB), set among continuous pictures FRAME_1～FRAME_K corresponding to the number that needs value added picture sub-pixel in K the picture sub-pixel of each display unit.
Step 408:, make in each picture of continuous pictures FRAME_1～FRAME_K corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be equal to and need the number of value added picture sub-pixel corresponding to the display unit of negative polarity according to the number that needs value added picture sub-pixel among continuous pictures FRAME_1～FRAME_K and the polarity of these a plurality of display units.
Step 410: finish.
According to the mode of operation of method for displaying image 40, after receiving input image data INIMG, the present invention produces K continuous pictures FRAME_1～FRAMF_K according to input image data INIMG.Wherein, the picture sub-pixel that comprised of the input picture sub-pixel that comprised of input image data INIMG and continuous pictures FRAME_1～FRAME_K is all corresponding to the display unit of liquid crystal indicator.Then, the present invention sets among continuous pictures FRAME_1～FRAME_K corresponding to the number that needs value added picture sub-pixel in K the picture sub-pixel of this display unit according to a least significant bit (LSB) value of a GTG value of the pairing input picture sub-pixel of a display unit.At last, according to the number that needs value added picture sub-pixel among continuous pictures FRAME_1～FRAME_K and the polarity of all display units, the present invention makes in each picture of continuous pictures FRAME_1～FRAME_K corresponding to the display unit of positive polarity and needs the number of value added picture sub-pixel to be equal to corresponding to the display unit of negative polarity and need the number of value added picture sub-pixel.
In brief, the present invention is considered as coordinate points on the two-dimentional coordinate with all display units of liquid crystal indicator, and each coordinate points is then corresponding to the input picture sub-pixel of input picture INIMG and K the picture sub-pixel of continuous pictures FRAME_1～FRAME_K.Then, at each coordinate points (display unit), the present invention is according to the least significant bit (LSB) value corresponding to the GTG value of the input picture sub-pixel of this coordinate points, sets among continuous pictures FRAME_1～FRAME_K the number corresponding to the value added picture sub-pixel of need in K the picture sub-pixel of this coordinate points.After in regular turn each coordinate points being carried out above-mentioned setting, the present invention according to the polarity of all display units, adjusts the position that needs value added picture sub-pixel among continuous pictures FRAME_1～FRAME_K again.
In other words, the present invention is prior among " time domain " (Temporal Domain), show the least significant bit (LSB) value in the GTG value of sub-pixel in value added mode, again in " spatial domain " (Spatial Domain) according to the polarity of all display units, adjust in each picture the position that needs value added picture sub-pixel.Thus, the present invention not only can go up the adjustment of position by " spatial domain " simultaneously in the least significant bit (LSB) value in " time domain " demonstration GTG value, reduces the film flicker phenomenon.
As previously mentioned, the present invention is according to the least significant bit (LSB) value of the GTG value of input picture sub-pixel, and making needs the number of value added picture sub-pixel to equal the least significant bit (LSB) value in a plurality of picture sub-pixels.Thus, according to the average effect of vision to quick modified-image, when the number of value added picture sub-pixel more for a long time, then this sub-pixel just can show the GTG effect of higher brightness.On the contrary, when the number of value added picture sub-pixel more after a little while, but the GTG effect that then this sub-pixel apparent brightness is lower.
For instance, when the sub-pixel value of importing is one 8 binary bit values, and the data bits that liquid crystal indicator can receive is when only being 6, known technology is with least significant bit (LSB) value (the least significant bits of 2 of minimums in the input picture sub-pixel data, LSB) directly delete need not, make the figure place of the sub-pixel data after deleting equal the figure place that liquid crystal display can show.For example, when the sub-pixel value of input was 110010112, the sub-pixel data after deleting was 1100102, and effective place value (112) of minimum 2 is deleted.In comparison, method for displaying image 40 can for example show desired GTG value with 4 continuous pictures, if order video picture with 1100112,1100102,1100112 and 1100112, liquid crystal indicator just can show 110010112 GTG value, wherein 1100112 4 continuous pictures appearance 3 times, and 1100102 4 continuous pictures appearance 1 time.By that analogy, if the sub-pixel value of input is 110010102 o'clock, effective place value (102) of minimum 2 deleted, then can make 1100112 to occur 2 times at 4 continuous pictures, and 1100102 also occur 2 times at 4 continuous pictures.In other words, method for displaying image 40 is that the data bits that can receive because of liquid crystal indicator is limited, and according to the least significant bit (LSB) value of being deleted, decision needs the number of value added picture sub-pixel.In above-mentioned example, 1100112 are the sub-pixel value after value added, and its number of times that occurs in continuous pictures is inevitable corresponding to the least significant bit (LSB) value of being deleted.
It should be noted that if sub-pixel is all value added at every turn, then will be equal to the brightness of the higher gray scale value that liquid crystal indicator originally just comprises; On the contrary, if all sub-pixels are not value added, then it will be equal to the brightness of original GTG value.Therefore, the present invention the grey exponent number that can increase, can not subtract 1 at most more than the number of continuous pictures FRAME_1～FRAME_K.Such as if K equals 4, the grey exponent number that then utilizes 40 of method for displaying image to increase is 3, just is three kinds of situations of 012,102,112 corresponding to LSB.
Simultaneously, according to method for displaying image 40 of the present invention, in each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel must be equal to and need the number of value added picture sub-pixel corresponding to the display unit of negative polarity.Preferably, before carrying out this step, can be block Block_1～Block_n with each picture segmentation earlier.In each block, the sub-pixel that need are value added is evenly distributed in the display unit of positive polarity and the display unit of negative polarity.Thus, not only can make indivedual liquid crystal displays in ofer short duration relatively time interval (approximately less than 0.1 second), via vision quick modified-image is produced average effect, obtain the effect of newly-increased GTG, simultaneously also can be in spatial interval, via needing value added picture sub-pixel to be evenly distributed in the picture sub-pixel of positive polarity and negative polarity, to eliminate phenomenon of picture flicker.
In addition, preferably, when if all sub-pixel GTGs of a block Block_x all equate among block Block_1～Block_n, then can be in each picture of continuous pictures FRAME_1～FRAME_K, the number of the value added sub-pixel of the need of block Block_x is equated.Thus, be arranged in the block Block_x of continuous pictures FRAME_1～FRAME_K, need the number of value added picture sub-pixel just can keep necessarily view data being play in more stable mode.Via the method, in the process of playing continuous pictures FRAME_1～FRAME_K, the present invention needing can to avoid the number of value added picture sub-pixel to produce erratic disturbance situation and influence the effect of vision.For instance, if include 16 sub-pixels among the block Block_x, if K equals 4, then Xin Zeng grey exponent number is 3.If when the least significant bit (LSB) value of being deleted was binary bit 01, the value added sub-pixel numbers of block Block_x in FRAME_1～FRAME_4 must be all 4 (16 ÷ 4 * 1).By that analogy, when being binary bit 10 as if the least significant bit (LSB) value of being deleted, the value added sub-pixel numbers of block Block_x in FRAME_1～FRAME_4 is all 8 (16 ÷ 4 * 2).Secondly, when being binary bit 11 as if the least significant bit (LSB) value of being deleted, the value added sub-pixel numbers of block Block_x in FRAME_1～FRAME_4 is all 12 (16 ÷ 4 * 3).Thus, need value added sub-pixel just can be evenly distributed among FRAME_1～FRAME_4, reach best dynamic imaging effect.
As from the foregoing, the present invention can summarize the value added distribution plan of available polarity according to the positive and negative polarity and the block of liquid crystal indicator.Please refer to 5A to 5C and scheme, 5A to 5C figure is the embodiment synoptic diagram that the present invention is used for the value added distribution of polarity of a single-point reversible type plane liquid crystal indicator.Wherein, for the sake of clarity, 5A to 5C figure is an example with 16 sub-pixels of 4 * 4 arranged, how to illustrate that the polarity according to liquid crystal indicator distributes, and sets the position that needs value added sub-pixel among continuous pictures FRAME_1～FRAME_4.Wherein, " * " symbol is promptly represented needs value added sub-pixel, and "+" symbology liquid crystal display is a positive polarity, and "-" symbology liquid crystal display is a negative polarity.Specifically, 5A figure shows the dynamic value added distribution of least significant bit (LSB) value LSB=012, and 5B figure shows the dynamic value added distribution of least significant bit (LSB) value LSB=102, and 5C figure shows the dynamic value added distribution of least significant bit (LSB) value LSB=112.Polarity distribution meeting that it should be noted that liquid crystal indicator changes along with the change of continuous pictures.For example, in 5A to 5C figure, picture FRAME_1 and FRAME_3 have identical polarity and distribute, and picture FRAME_2 and FRAME_4 have the polarity distribution that identical polarity distributes and differs from picture FRAME_1 and FRAME_3
Please refer to 6A to 6C and scheme, 6A to 6C figure is the embodiment synoptic diagram that the present invention is used for the value added distribution of polarity of a two point reversible type plane liquid crystal indicator.6A to the 6C figure symbol that uses all continues the example of 5A to 5C figure, in the hope of succinctly.By 5A to 5C figure and 6A to 6C figure as can be known, the present invention can be used for increasing the grey exponent number of 2 positions, and distributes not simultaneously when polarity, needs the operating principle that the position at value added sub-pixel place must corresponding change.To explanation of the present invention, this area tool is known the knowledgeable usually according to above-mentioned, when knowing that the present invention also is different from the situation of the polarity distribution of above-mentioned single-point reversible type and double-point inversion formula liquid crystal indicator applicable to the polarity distribution.This area tool knows that usually the knowledgeable also ought know the block that the value added distribution of polarity is comprised, and also may comprise the sub-pixel of other numbers, and represents with other big or small matrix-style.For example, the value added distribution of polarity can only comprise 4 sub-pixels, and with 2 * 2 matrix representation, is used for increasing the grey exponent number of 1 position.Perhaps, the value added distribution of polarity also can include 8 sub-pixels, and with 4 * 2 matrix representation.At last, this area tool knows that usually the knowledgeable also ought know that principle of the present invention also can be applicable to increase the not grey exponent number of coordination.
According to the present invention, when the figure place of the data that can receive when the plane liquid crystal indicator is less than the figure place of input picture, then can promote grey exponent number via method for displaying image 40.In precedent, when input picture is 8, and liquid crystal indicator is merely able to accept 6 view data, then can increase the grey exponent number of equivalence according to method for displaying image 40.If liquid crystal indicator is a single-point reversible type liquid crystal indicator, then can use the example of 5A to 5C figure, to increase the GTG of 2 positions.If liquid crystal indicator is a two point reversible type liquid crystal indicator, then can use 6A to 6C to scheme, to increase the GTG of 2 positions.Therefore, the present invention can arrange the value added distribution of its polarity according to the positive-negative polarity of value added display unit, to eliminate scintillation, makes image quality be able to obvious lifting.
In addition, it should be noted that 3D schemes and the liquid crystal display of the edge part of 3E figure midplane liquid crystal indicator 30 is a group with single liquid crystal display.At this kind situation, the present invention equally can be according to method for displaying image 40, begin to start at from the picture edge, be block Block_1～Block_n with each picture segmentation in the same manner, and in each block, polarity of voltage according to the display unit that is comprised distributes, determine that value added sub-pixel wherein is evenly distributed in the display unit of positive polarity and the display unit of negative polarity, and part beyond in the picture edge, two display units that have identical polarity of voltage in the same group need not be placed among the same block Block_x.
About the realization of method for displaying image 40, please refer to 7A figure, 7A figure is the synoptic diagram according to a liquid crystal indicator 70 of the present invention.Liquid crystal indicator 70 includes a panel PANEL1 and an image processor 72.Panel PANEL1 comprises a plurality of display units, and each display unit switches on a positive polarity and a negative polarity.Image processor 72 is used for realizing method for displaying image 40, and shown in 7B figure, it includes an input block 700, a pretreatment unit 702, one value added adjustment unit 704, a polarity adjustment unit 706 and an output unit 708.Input block 700, pretreatment unit 702, value added adjustment unit 704 and polarity adjustment unit 706 are used for the step 402,404,406 and 408 of carries out image display packing 40 respectively.Therefore, detailed operation or associated change can be with reference to above stated specification, and for example, polarity adjustment unit 706 is made up of one 720 cutting units and allocation units 722.Each picture segmentation that cutting unit 722 is used for continuous pictures FRAME_1～FRAME_K is a plurality of blocks, and allocation units 722 are used for according to the number that needs value added picture sub-pixel among continuous pictures FRAME_1～FRAME_K and the polarity of display unit, make in each block of each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be equal to corresponding to the display unit of negative polarity and need the number of value added picture sub-pixel.In addition, image processor 72 comprises an output unit 708 in addition, is used for exporting continuous pictures FRAME_1～FRAME_K to panel PANEL1, to play continuous pictures.
Show according to experiment, if liquid crystal indicator only uses vision that quick modified-image is produced average effect to increase grey exponent number (as step 404 of the present invention, 406), and do not consider the special polarity of liquid crystal indicator distribute (as step 408 of the present invention), then aforesaid scintillation will become very apparent, and especially the scintillation with double-point inversion formula (the double dot inversion) liquid crystal indicator that adopts bigrid (dual gate) framework is the most obvious.Therefore, see through method for displaying image 40, the present invention can increase the grey exponent number of liquid crystal indicator, and can reduce scintillation, thereby make things convenient for user's reading of data under the situation of not changing display panels.
Generally speaking, the present invention not only can go up the adjustment of position by " spatial domain " simultaneously in the least significant bit (LSB) value in " time domain " demonstration GTG value, reduces the film flicker phenomenon.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (21)
1. method that is used for promoting the image quality of a liquid crystal indicator, a panel of this liquid crystal indicator comprises a plurality of display units, and each display unit switches on a positive polarity and a negative polarity, and this method includes:
Receive an input picture, this input picture comprises a plurality of input picture sub-pixels, corresponding to these a plurality of display units;
According to this input picture, produce a plurality of continuous pictures of a default period, each picture of these a plurality of continuous pictures comprises a plurality of picture sub-pixels, and corresponding to these a plurality of display units, the grey exponent number of this input picture is greater than the grey exponent number of these a plurality of continuous pictures;
According to a least significant bit (LSB) value LSB of a GTG value of the pairing input picture sub-pixel of each display unit of these a plurality of display units, set in these a plurality of continuous pictures corresponding to the number that needs value added picture sub-pixel in a plurality of picture sub-pixels of this each display unit; And
According to the number that needs value added picture sub-pixel in these a plurality of continuous pictures and the polarity of these a plurality of display units, make in each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be comparable to and need the number of value added picture sub-pixel corresponding to the display unit of negative polarity.
2. the method for claim 1, it includes in addition by this panel plays these a plurality of continuous pictures.
3. the method for claim 1, wherein this panel is that a two point is inverted panel.
4. the method for claim 1, wherein this panel is a bigrid panel.
5. the method for claim 1, wherein make in each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be equal to number, include corresponding to the display unit of negative polarity and picture sub-pixel that need be value added according to the polarity of the number that needs value added picture sub-pixel in this a plurality of continuous pictures and these a plurality of display units:
With each picture segmentation of these a plurality of continuous pictures is a plurality of blocks; And
According to the number that needs value added picture sub-pixel in these a plurality of continuous pictures and the polarity of these a plurality of display units, make in each block of each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be equal to and need the number of value added picture sub-pixel corresponding to the display unit of negative polarity.
6. method as claimed in claim 5, wherein each block of these a plurality of blocks is a square.
7. method as claimed in claim 5, wherein each block of these a plurality of blocks is a rectangle.
8. image processor that is used for promoting the image quality of a liquid crystal indicator, a panel of this liquid crystal indicator comprises a plurality of display units, and each display unit switches on a positive polarity and a negative polarity, and this image processor includes:
One input block is used for receiving an input picture, and this input picture comprises a plurality of input picture sub-pixels, corresponding to these a plurality of display units;
One pretreatment unit, be used for according to this input picture, produce a plurality of continuous pictures of a default period, each picture of these a plurality of continuous pictures comprises a plurality of picture sub-pixels, corresponding to these a plurality of display units, the grey exponent number of this input picture is greater than the grey exponent number of these a plurality of continuous pictures;
One value added adjustment unit, be used for a least significant bit (LSB) value LSB according to a GTG value of the pairing input picture sub-pixel of each display unit of this a plurality of display units, set in these a plurality of continuous pictures number corresponding to the value added picture sub-pixel of need in a plurality of picture sub-pixels of this each display unit; And
One polarity adjustment unit, be used for according to needing the number of value added picture sub-pixel and the polarity of these a plurality of display units in this a plurality of continuous pictures, make in each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be comparable to number corresponding to the display unit of negative polarity and picture sub-pixel that need be value added.
9. image processor as claimed in claim 8, it comprises an output unit in addition, is used for exporting these a plurality of continuous pictures this panel to this liquid crystal indicator, plays these a plurality of continuous pictures.
10. image processor as claimed in claim 8, wherein this panel is that a two point is inverted panel.
11. image processor as claimed in claim 8, wherein this panel is a bigrid panel.
12. image processor as claimed in claim 8, this polarity adjustment unit wherein includes:
One cutting unit, each picture segmentation that is used for these a plurality of continuous pictures is a plurality of blocks; And
One allocation units, be used for according to needing the number of value added picture sub-pixel and the polarity of these a plurality of display units in this a plurality of continuous pictures, make in each block of each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be equal to number corresponding to the display unit of negative polarity and picture sub-pixel that need be value added.
13. image processor as claimed in claim 12, wherein each block of these a plurality of blocks is a square.
14. image processor as claimed in claim 12, wherein each block of these a plurality of blocks is a rectangle.
15. a liquid crystal indicator includes:
One panel comprises a plurality of display units, and each display unit switches on a positive polarity and a negative polarity; And
One image processor includes:
One input block is used for receiving an input picture, and this input picture comprises a plurality of input picture sub-pixels, corresponding to these a plurality of display units;
One pretreatment unit, be used for according to this input picture, produce a plurality of continuous pictures of a default period, each picture of these a plurality of continuous pictures comprises a plurality of picture sub-pixels, corresponding to these a plurality of display units, the grey exponent number of this input picture is greater than the grey exponent number of these a plurality of continuous pictures;
One value added adjustment unit, be used for a least significant bit (LSB) value LSB according to a GTG value of the pairing input picture sub-pixel of each display unit of this a plurality of display units, set in these a plurality of continuous pictures number corresponding to the value added picture sub-pixel of need in a plurality of picture sub-pixels of this each display unit; And
One polarity adjustment unit, be used for according to needing the number of value added picture sub-pixel and the polarity of these a plurality of display units in this a plurality of continuous pictures, make in each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be comparable to number corresponding to the display unit of negative polarity and picture sub-pixel that need be value added.
16. liquid crystal indicator as claimed in claim 15, it comprises an output unit in addition, is used for exporting these a plurality of continuous pictures this panel to this liquid crystal indicator, plays these a plurality of continuous pictures.
17. liquid crystal indicator as claimed in claim 15, wherein this panel is that a two point is inverted panel.
18. liquid crystal indicator as claimed in claim 15, wherein this panel is a bigrid panel.
19. liquid crystal indicator as claimed in claim 15, this polarity adjustment unit wherein includes:
One cutting unit, each picture segmentation that is used for these a plurality of continuous pictures is a plurality of blocks; And
One allocation units, be used for according to needing the number of value added picture sub-pixel and the polarity of these a plurality of display units in this a plurality of continuous pictures, make in each block of each picture corresponding to the display unit of positive polarity and need the number of value added picture sub-pixel to be equal to number corresponding to the display unit of negative polarity and picture sub-pixel that need be value added.
20. liquid crystal indicator as claimed in claim 19, wherein each block of these a plurality of blocks is a square.
21. liquid crystal indicator as claimed in claim 19, wherein each block of these a plurality of blocks is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910133007A CN101853638A (en) | 2009-03-31 | 2009-03-31 | Method for improving image quality of liquid crystal display device and related device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910133007A CN101853638A (en) | 2009-03-31 | 2009-03-31 | Method for improving image quality of liquid crystal display device and related device thereof |
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| CN101853638A true CN101853638A (en) | 2010-10-06 |
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| CN200910133007A Pending CN101853638A (en) | 2009-03-31 | 2009-03-31 | Method for improving image quality of liquid crystal display device and related device thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102081899A (en) * | 2010-12-29 | 2011-06-01 | 友达光电股份有限公司 | Method for driving pixels of a display panel |
| CN102269905A (en) * | 2011-07-30 | 2011-12-07 | 华映光电股份有限公司 | Liquid crystal panel |
| CN102750916A (en) * | 2011-04-18 | 2012-10-24 | 晨星软件研发(深圳)有限公司 | Thin film transistor array capable of completely inversing dots and liquid crystal display panel thereof |
| US8963896B2 (en) | 2011-01-11 | 2015-02-24 | Mstar Semiconductor, Inc. | Dot inversion TFT array and LCD panel |
| CN106409258A (en) * | 2016-09-12 | 2017-02-15 | 友达光电股份有限公司 | Control method |
| CN107591144A (en) * | 2017-10-24 | 2018-01-16 | 惠科股份有限公司 | Driving method and driving device of display panel |
| CN110164377A (en) * | 2018-08-30 | 2019-08-23 | 京东方科技集团股份有限公司 | Gray scale voltage regulating device and method, display device |
| CN114077470A (en) * | 2020-08-21 | 2022-02-22 | 广州视源电子科技股份有限公司 | Liquid crystal display screen control method, device, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081899A (en) * | 2010-12-29 | 2011-06-01 | 友达光电股份有限公司 | Method for driving pixels of a display panel |
| US8963896B2 (en) | 2011-01-11 | 2015-02-24 | Mstar Semiconductor, Inc. | Dot inversion TFT array and LCD panel |
| CN102750916A (en) * | 2011-04-18 | 2012-10-24 | 晨星软件研发(深圳)有限公司 | Thin film transistor array capable of completely inversing dots and liquid crystal display panel thereof |
| CN102269905A (en) * | 2011-07-30 | 2011-12-07 | 华映光电股份有限公司 | Liquid crystal panel |
| CN106409258A (en) * | 2016-09-12 | 2017-02-15 | 友达光电股份有限公司 | Control method |
| CN107591144A (en) * | 2017-10-24 | 2018-01-16 | 惠科股份有限公司 | Driving method and driving device of display panel |
| CN110164377A (en) * | 2018-08-30 | 2019-08-23 | 京东方科技集团股份有限公司 | Gray scale voltage regulating device and method, display device |
| CN110164377B (en) * | 2018-08-30 | 2021-01-26 | 京东方科技集团股份有限公司 | Gray scale voltage adjusting device and method and display device |
| CN114077470A (en) * | 2020-08-21 | 2022-02-22 | 广州视源电子科技股份有限公司 | Liquid crystal display screen control method, device, equipment and storage medium |
| CN114077470B (en) * | 2020-08-21 | 2023-10-10 | 广州视源电子科技股份有限公司 | Liquid crystal display control method, device, equipment and storage medium |
| CN114822416A (en) * | 2021-01-29 | 2022-07-29 | 北京小米移动软件有限公司 | Driving method, driving device, terminal device and storage medium |
| CN114822416B (en) * | 2021-01-29 | 2024-05-14 | 北京小米移动软件有限公司 | Driving method, driving device, terminal device and storage medium |
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Application publication date: 20101006 |