CN100454086C - Liquid crystal display device and driving method - Google Patents
Liquid crystal display device and driving method Download PDFInfo
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- CN100454086C CN100454086C CNB2004100016400A CN200410001640A CN100454086C CN 100454086 C CN100454086 C CN 100454086C CN B2004100016400 A CNB2004100016400 A CN B2004100016400A CN 200410001640 A CN200410001640 A CN 200410001640A CN 100454086 C CN100454086 C CN 100454086C
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Abstract
The present invention relates to a display method and a display for compensating the color deviation of a front-view image and a side-view image. The picture time of the display is divided into a plurality of sub picture time. Firstly, a plurality of correction grey scale values are generated according to a primitive grey scale value of picture elements, wherein the primitive grey scale value is corresponding to primitive front-view normal brightness and primitive side-view normal brightness. Then, within the sub picture time, the picture elements are driven by a plurality of voltage which is corresponding to the correction grey scale values. Correction front-view normal brightness and correction side-view normal brightness are decided by each sub picture time and a corresponding correction grey scale value. The summation of absolute values of the difference of the correction front-view normal brightness and the corresponding correction side-view normal brightness is smaller than the absolute value of the difference of the primitive front-view normal brightness and the primitive side-view normal brightness.
Description
[technical field]
The invention relates to a kind of display packing and display of complementary color deviation, and particularly face the display packing and the display of the colo(u)r bias of image and side-looking image relevant for a kind of compensation.
[background technology]
Please refer to Fig. 1, its illustrate is the system architecture diagram of conventional liquid crystal.Below below be that 1024 * 768 LCD (LCD Panel) 100 is that example is done explanation with resolution.LCD 100 cordings have in order to drive 1024 * 3 data lines (Data Line) and 768 sweep traces (Scan Line) of 1024 row red picture element, green picture element and blue picture elements.Data line and scanning linear system are respectively by data driver (Data Driver) 102 and 104 drivings of scanner driver (Scan Driver).Data driver device 102 receives many strokes prime number certificate (Pixel Data) PD that is transmitted by controller 106 in regular turn under the control of the data controlling signal Cntl_D that a controller 106 is exported.Data driver 102 is that the picture element data PD that will receive handles, and exports corresponding voltage to drive many data lines of LCD 100.Scanner driver 104 then is under the control of the scan control signal Cntl_S that controller 106 is exported, and output scanning signal in regular turn is to scan every sweep trace in regular turn.Every sweep trace and every data line intersect part, are to define a picture element.After all sweep traces of scanning, all picture elements will be driven and finish, to finish the demonstration of a picture (frame).
Generally speaking, because the light transmittance when facing LCD 100 with side-looking LCD 100 is also inequality, this be because, the incident light of different angles is in liquid crystal layer, the phasic difference value (Retardation) that is produced is a difference, therefore, when viewing angle not simultaneously, the suffered deviation coefficient of light is inequality, causes penetrance also different.So different visual angles can cause the brightness difference of shown light.And when different color light (for example red light, green light and blue light) when facing with side-looking each with different brightness ratio colour mixtures after, then can produce and face the color different colo(u)r bias phenomenon shown with side-looking.How to reduce the colo(u)r bias when facing, for being one of problem of endeavouring of industry with the side-looking LCD.
[summary of the invention]
In view of this, purpose of the present invention is exactly at the display packing and the display that provide a kind of compensation to face the colo(u)r bias between image and side-looking image, can improve the colo(u)r bias phenomenon effectively, to improve the image quality of display.
According to purpose of the present invention, the display packing that the colo(u)r bias of image and side-looking image is faced in a kind of compensation is proposed, be to be applied in the display.Display is to show a picture in an image time (frame period), and image time system is divided into a plurality of subframe times, and display respectively shows a subframe (sub-frame) in each a little subframe in the time.Display packing of the present invention comprises: at first, the original GTG value at picture element produces a plurality of correction GTG values, and wherein, original GTG value is in being to correspond to an original normalizing light and the original side-looking normalizing light faced.Then, in the time, with the same picture element of a plurality of magnitude of voltage elder generation's rear drives, wherein these voltage systems correspond to these respectively and proofread and correct the GTG value respectively in these subframes.In addition, each these subframe time and corresponding correction GTG value system determines one and faces a normalizing light and a correction side-looking normalizing light.These corrections are faced normalizing light and corresponding these and are proofreaied and correct the summation system of absolute value of difference of side-looking normalizing lights less than the original absolute value of facing the difference of normalizing light and original side-looking normalizing light.
According to another object of the present invention, a kind of display is proposed, display is to show a picture in an image time, and image time system is divided into a plurality of subframe times, and display respectively shows a subframe in each these subframe in the time.Display of the present invention comprises a picture element, a correction GTG value generator and a data driver.Proofread and correct GTG value generator system in order to the original GTG value at picture element, produce a plurality of correction GTG values, wherein, original GTG value is in being to correspond to an original normalizing light L0 and the original side-looking normalizing light L0 ' of facing.Data driver system is used to these subframes in the time, and with the same picture element of a plurality of voltage elder generation's rear drives, wherein these voltage systems correspond to these respectively and proofread and correct the GTG value respectively.In addition, each these subframe time and corresponding correction GTG value system determines one and faces a normalizing light and a correction side-looking normalizing light.These corrections are faced normalizing light and corresponding these and are proofreaied and correct the summation system of absolute value of difference of side-looking normalizing lights less than the original absolute value of facing the difference of normalizing light and original side-looking normalizing light.
According to a further object of the present invention, a kind of display is proposed, display is to show a picture in an image time (frameperiod).Display of the present invention comprises a display panel, a correction GTG value generator and a data driver.Display panel has one first picture element and one second picture element.Proofread and correct GTG value generator system in order at one first original GTG value of first picture element and one second original GTG value of second picture element, produce one first and proofread and correct GTG value and one second correction GTG value.Wherein, first original GTG value system corresponds to one first and originally faces normalizing light La and one first original side-looking normalizing light La ', and the second original GTG value is to correspond to one second original normalizing light Lb and the one second original side-looking normalizing light Lb ' of facing.And data driver system is used in the image time, and respectively with one first voltage and one second driven, first picture element and second picture element, first voltage and second voltage system correspond to first respectively and proofread and correct the GTG value and the second correction GTG value.Wherein, when first picture element during by first driven, the first picture element cording has one first to face normalizing light Lc and one first and proofread and correct side-looking normalizing light Lc '; When second picture element during by second driven, the second picture element cording has one second to face normalizing light Ld and one second and proofread and correct side-looking normalizing light Ld '.Wherein, | Lc-Lc ' |+| Ld-Ld ' |＜| La-La ' |+| Lb-Lb ' |.
According to a further object of the present invention, be to propose a kind of driving method, with visible angle and the colo(u)r bias phenomenon of effective improvement one multi-domain vertical alignment liquid crystal displays (Multi Domain Vertically Aligned LCD).
[description of drawings]
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Fig. 1 illustrates the system architecture diagram into conventional liquid crystal;
Figure 2 shows that the relative position figure of user when the Q point is observed LCD;
Fig. 3 A to Fig. 3 C is respectively red light, green light and blue light in the GTG value of different visual angles and the graph of relation of normalization (normalized) light transmittance;
Fig. 4 illustrates and is the system architecture diagram according to a kind of display of one first embodiment of the present invention;
Fig. 5 A illustrates to traditional as picture element P (i, normalization light transmittance T (%) time history plot when j) being corresponded to the driven of original GTG value, Fig. 5 B illustrates to working as picture element P (i, normalization light transmittance T (%) time history plot when j) being corresponded to the driven of proofreading and correct the GTG value;
Fig. 6 A and Fig. 6 B are the synoptic diagram of adjacent two pictures of traditional monitor;
Fig. 7 is the synoptic diagram of adjacent two pictures of the display of the second embodiment of the present invention; And
Fig. 8 A and Fig. 8 B illustrate the other two kinds of synoptic diagram that different picture elements are arranged that are suitable for the second embodiment of the present invention.
[embodiment]
In LCD, red green blue tricolor produces the degree of colo(u)r bias and inequality when different GTG value.The present invention is the color by will originally showing in a picture element of a picture, two the less colors of colo(u)r bias that are divided into equivalence show in two subframes, or being divided into equivalent two less colors of colo(u)r bias shows in two adjacent picture elements, to reduce the situation of colo(u)r bias.
Please refer to Fig. 2 and Fig. 3 A to Fig. 3 D, wherein, Figure 2 shows that the relative position figure of user when the Q point is observed LCD 200, Fig. 3 A to Fig. 3 C is respectively red light, green light and blue light in the GTG value of different visual angles and the graph of relation of normalization (normalized) light transmittance.GTG value with picture element is that example is done explanation between 0 and 255 below.The normalization light transmittance of facing of any GTG value is the pairing light transmittance of facing of facing light transmittance divided by maximum (if often black (normallyblack) type LCD for example, in GTG value 255) of this GTG value.The normalization light transmittance of the side-looking of any GTG value is the side-looking light transmittance of the pairing side-looking light transmittance of this GTG value divided by maximum gray value (for example being GTG value 255).As shown in Figure 2, the angle of supposing the Z axle of the normal vector on the online and LCD 200 of observation station Q point central point on the LCD 200 is the θ degree, and the Q point in the subpoint on the display panel 200 to LCD on 200 the angle of the online and X-axis of central point be the ψ degree, then Fig. 3 A to Fig. 3 C system demonstrates simultaneously as angle (ψ, θ) equal (0,0), (0,45) reach (0,60) the GTG value the time and the graph of relation of normalization light transmittance, and demonstrate angle (0,60) poor with the normalization light transmittance of (0,0).Wherein, (on behalf of the user, ψ when θ) equaling (0,0), face LCD 200, and (ψ, when θ) equaling (0,45) or (0,60), representing the user is 45 degree or 60 degree side-looking LCD 200 with the side-looking angle when angle when angle.
By Fig. 3 A to Fig. 3 C as can be known, different color light is when the same gray level value, and side-looking can be different with the normalization light transmittance of facing, thereby cause colo(u)r bias; And when the GTG value near 0 or 255 the time, side-looking is less with the difference of the normalization light transmittance of facing, and is to approach 0%.Therefore, with original GTG value 128 is example, proofread and correct the GTG value if can find out one group, its side-looking is also littler with the difference of the normalization light transmittance of facing than the side-looking of original GTG value 128 with the difference of the normalization light transmittance of facing, and in the time of allowing the user face LCD again, can obtain identical brightness, this group is proofreaied and correct the GTG value just can make LCD reduce in the colo(u)r bias of side-looking with positive apparent time.
Embodiment one
First embodiment of the present invention system goes up the mode that changes the GTG value with time domain (time domain) and reaches purpose of the present invention.The display packing of the colo(u)r bias of image and side-looking image is faced in the compensation of the first embodiment of the present invention, is to be applied in the display, and for example be LCD.Please refer to Fig. 4, its illustrate is the system architecture diagram according to a kind of LCD of one first embodiment of the present invention.LCD includes a plurality of picture elements, a plurality of data driver 402, a plurality of scanner driver 404 and a controller 406.Controller 406 comprises that more one proofreaies and correct GTG value generator 407.(i j) does explanation for example, and (i j) is arbitrary picture element of LCD to picture element P, and i and j are positive integer with picture element P below.LCD is to show a picture in an image time (frame period) FP.In the present invention, image time FP system is divided into n subframe time SFP1～SFPn, and n is the positive integer greater than 1.LCD respectively shows a subframe (sub-frame) in each subframe in the time.Suppose picture element P (i, j) the original GTG value in picture be GR0 (i, j).Proofreading and correct in the GTG value generator 407 is to store a data table of comparisons (Look Up Table), and this data table of comparisons system is writing down all original GTG value GR0 and at least one group of its pairing correction GTG value GR1～GRn.Proofread and correct GTG value generator 407 and be in order to by the data query table of comparisons, at picture element P (i, original GTG value GR0 j) (i j), produces n correction GTG value, comprise correction GTG value GR1 (i, j), GR2 (i, j) ... GRn (i, j).Proofreading and correct the GTG value for this n will input in the corresponding data driver 402 in regular turn when showing each subframe.
Equaling 2 with n below is that example is done explanation.Please refer to Fig. 5 A and Fig. 5 B, wherein, Fig. 5 A illustrates to traditional as picture element P (i, normalization light transmittance T (%) time history plot when j) being corresponded to the driven of original GTG value GR0, Fig. 5 B illustrates to working as picture element P (i, normalization light transmittance T (%) time history plot when j) being corresponded to the driven of proofreading and correct GTG value GR1 and GR2.Image time FP system be divided into one for the first time image time SFP1 with one the second time image time SFP2.For the first time image time SFP1 and first proofread and correct GTG value GR1 (i, j) be determine one first face normalizing light L1 (i, j) and one first correction side-looking normalizing light L1 ' (i, j); For the second time image time SFP2 and second proofread and correct GTG value GR2 (i, j) be correspond to one second face normalizing light L2 (i, j) and one second correction side-looking normalizing light L2 ' (i, j).Wherein, | L1 (i, j)-L1 ' (i, j) |+| L2 (i, j)-L2 ' (i, j) |＜| L0 (i, j)-L0 ' (i, j) |.
Please refer to Fig. 5 A, traditional in an image time FP, be with correspond to original GTG value GR0 (i, driven picture element P j) (i, j).At this moment, face that (i, the normalization light transmittance of light is respectively T0 (t) to the function of time and T0 ' (t) in the time of j) with side-looking picture element P.And original face normalizing light L0 (i, j) for normalization light transmittance T0 (t) in image time FP to the integrated value of time.In like manner, original side-looking normalizing light L0 ' (i, j) be, normalization light transmittance T0 ' (t) in image time FP to the integrated value of time.
Shown in Fig. 5 B, the present invention in first time image time SFP1, be with correspond to first proofread and correct GTG value GR1 (i, driven picture element P j) (i, j).At this moment, (i, the normalization light transmittance of light is respectively T1 (t) to the function of time and T1 ' (t) in the time of j) with side-looking picture element P when facing.And in second time image time SFP2, be with correspond to second proofread and correct GTG value GR2 (i, driven picture element P j) (i, j).At this moment, face that (i, the normalization light transmittance of light is respectively T2 (t) to the function of time and T2 ' (t) in the time of j) with side-looking picture element P.Similarly, of the present invention first faces normalizing light L1 (i, j) be, as picture element P (i, j) be subjected to corresponding to first and proofread and correct GTG value GR1 (i, during j) driven, face picture element P (i, the normalization light transmittance T1 (t) in the time of j) in first time image time SFP1 to the integrated value of time.First proofreaies and correct side-looking normalizing light L1 ', and (i j) is, as picture element P (i, j) be subjected to corresponding to first and proofread and correct GTG value GR1 (I, during j) driven, side-looking picture element P (i, the normalization light transmittance T1 ' in the time of j) (t) in the first time image time SFP1 to the integrated value of time.Second faces normalizing light L2, and (i j) is, as picture element P (i, j) be subjected to corresponding to second and proofread and correct GTG value GR2 (i, during j) driven, face picture element P (i, the normalization light transmittance T2 (t) in the time of j) in second time image time SFP2 to the integrated value of time.Second proofreaies and correct side-looking normalizing light L2 ', and (i j) is, as picture element P (i, j) be subjected to corresponding to second and proofread and correct GTG value GR2 (i, during j) driven, side-looking picture element P (i, the normalization light transmittance T2 ' in the time of j) (t) in second time image time SFP2 to the integrated value of time.
Since selected go out first proofread and correct GTG value GR1 (i, j) and second proofread and correct GTG value GR2 (i j) is the correction GTG value that satisfies following formula: | L1 (i, j)-L1 ' (i, j) |+| L2 (i, j)-L2 ' (i, j) |＜| L0 (i, j)-L0 ' (i, j) |.So, when the user observes picture element P (i, j) time, for the first time corresponding in the image time SFP1 first proofreaied and correct GTG value GR1 (i, j) the positive angle and the normalizing light of side-looking angle poor, second proofread and correct GTG value GR2 (i with corresponding in second time image time SFP2, the accumulative effect of the difference of the positive angle j) and the normalizing light of side-looking angle, system corresponds to original GTG value GR0 (i, positive angle j) and the normalizing light of side-looking angle poor less than conventional practice in an image time FP.So the present invention can make picture element P effectively, and (i, colo(u)r bias j) lowers.
Moreover, preferably, the first correction GTG value GR1 (i that the present invention is selected, j) and second proofread and correct GTG value GR2 (i, j) pairing first face normalizing light L1 (i, j) with second face normalizing light L2 (i, j) sum equal haply original face normalizing light L0 (i, j).So, when the user observes picture element P (i, j) time, picture element P (i, j) brightness is that corresponding in first time image time SFP1 first proofreaied and correct GTG value GR1 (i, j) brightness second is proofreaied and correct GTG value GR2 (it can be approached the brightness that corresponds to original GTG value GR0 that is produced of picture element in an image time FP of conventional practice for i, the accumulative effect of brightness j) with corresponding in second time image time SFP2.
In addition, for the first time image time SFP1 and image time SFP2 for the second time preferably be image time FP partly.Original GTG value GR0 (i, j) be between first proofread and correct GTG value GR1 (i, j) and second proofread and correct GTG value GR2 (i, j) between, and first proofread and correct GTG value GR1 (i, j) preferably be greater than second proofread and correct GTG value GR2 (i, j).For instance, measure via instrument, (i, original GTG value j) is 128 o'clock, can select first to proofread and correct GTG value GR1 (i is 190 j), and second proofread and correct GTG value GR2 (i is 0 j), and can suppose SFP1=SFP2=(1/2) FP as blue picture element P.By Fig. 5 B as can be known, transfer original GTG value 128 to first and proofread and correct GTG value 190 and second and proofread and correct after the GTG value 0, the absolute value of the difference of the normalizing light that its positive angle and side-looking 60 are spent will be less than original GTG value 128.Hence one can see that, and LCD of the present invention is when facing with side-looking, and the difference of picture element brightness is little than conventional liquid crystal really, so the present invention can improve the phenomenon of colo(u)r bias really effectively.
Wherein, the absolute value of the difference of the normalization light transmittance of the positive angle of GTG value 0 and side-looking 60 degree is very little, is specially adapted to proofread and correct the GTG value as second.When the present invention is used in the liquid crystal mesogens display, can make LCD in image time FP, reach the brightness of equivalence by first and second continuously dynamic switching of proofreading and correct the GTG value, with correct show image, for example, when original GTG value is 128, first, second proofreaies and correct the GTG value can be respectively (190,0) or (0,190).
The choosing of the data table of comparisons under this embodiment: fix an original GTG value GR0 (i, j), measure pairing original face normalizing light L0 (i, j).For the benefit of implement, most preferred embodiment is that the original picture face time is divided into two identical subframe times.Since GTG 0 rank face permeability variations minimum with side-looking, and reduce the reaction time of liquid crystal drive, select GTG 0 and be used as second and proofread and correct the GTG value.Because the liquid crystal drive characteristic is not to be a fixed blocks ripple, therefore need to adjust first and proofread and correct that the GTG value is proofreaied and correct the GTG value with second so that pairing first face normalizing light L1 (i during actual driving, j) face normalizing light L2 (i with second, j) sum equal haply original face normalizing light L0 (i, j); For the first time corresponding in the image time SFP1 first proofreaied and correct GTG value GR1 (i, j) the positive angle and the normalizing light of side-looking angle poor, second proofread and correct GTG value GR2 (i with corresponding in second time image time SFP2, the accumulative effect of the difference of the positive angle j) and the normalizing light of side-looking angle, system corresponds to original GTG value GR0 (i, positive angle j) and the normalizing light of side-looking angle poor less than conventional practice in an image time FP.With this method each GTG value pairing first is proofreaied and correct after the GTG value calculates with the second correction GTG value, and form a data table of comparisons.
Second embodiment
Second embodiment of the present invention system goes up the mode that changes the GTG value with spatial domain (space domain) and reaches purpose of the present invention.The display that compensates the colo(u)r bias of facing image and side-looking image of the present invention, system shows a picture in an image time (frame period) FP.This display can be LCD.LCD includes a display panels, a plurality of data driver, a plurality of scanner driver and a controller.Cording has a plurality of picture elements on the display panels, and controller comprises that more one proofreaies and correct GTG value generator.Be that example is done explanation with the first picture element Pa and the second picture element Pb below.Proofread and correct GTG value generator system in order at the one first original GTG value GRa0 of the first picture element Pa and the one second original GTG value GRb0 of the second picture element Pb, produce one first and proofread and correct GTG value GRa1 and one second correction GTG value GRb1.Wherein, first original GTG value GRa0 system corresponds to one first and originally faces normalizing light La and one first original side-looking normalizing light La ', and the second original GTG value GRb0 is in being to correspond to one second original normalizing light Lb and the one second original side-looking normalizing light Lb ' of facing.
Data driver system is used in the image time FP, respectively with one first voltage and one second driven, the first picture element Pa and the second picture element Pb.First voltage and second voltage system correspond to first respectively and proofread and correct the GTG value GRa1 and the second correction GTG value GRb1.Wherein, as the first picture element Pa during by first driven, the first picture element Pa cording has one first to face normalizing light Lc and one first and proofread and correct side-looking normalizing light Lc '; As the second picture element Pb during by second driven, the second picture element Pb cording has one second to face normalizing light Ld and one second and proofread and correct side-looking normalizing light Ld '.Wherein, | Lc-Lc ' |+| Ld-Ld ' |＜| La-La ' |+| Lb-Lb ' |.
Proofreading and correct GTG value generator cording has a data table of comparisons, proofreaies and correct GTG value generator system and produces the first correction GTG value GRa1 and the second correction GTG value GRb1 by the data query table of comparisons.This data table of comparisons system is writing down the first original GTG value GRa0 and the second original GTG value GRb0 and pairing first proofreaies and correct the GTG value GRa1 and the second correction GTG value GRb1.
The first picture element Pa and the second picture element Pb are adjacent, and the first picture element Pa and the second picture element Pb are the picture element of same color.The first original GTG value GRa0 and the second original GTG value GRb0 all proofread and correct GTG value GRa1 and second between first to proofread and correct between the GTG value GRb1.First faces normalizing light Lc and second faces normalizing light Ld sum system and equals the first original normalizing light La and the second original normalizing light Lb sum of facing faced haply.
Lift an example below with explanation.Please refer to Fig. 6 A, Fig. 6 B and Fig. 7, wherein, Fig. 6 A and Fig. 6 B are the synoptic diagram of adjacent two pictures of conventional liquid crystal, and Fig. 7 is the synoptic diagram of the LCD of the second embodiment of the present invention.Red picture element, green picture element and blue picture element system are respectively with R, G and B representative.Generally speaking, the original GTG value of contiguous picture element is comparatively approaching usually, and is suitable for using the second embodiment of the present invention.Being all 128 with the original GTG value of adjacent blue picture element B11 and B21 below is that example is done explanation.When the original GTG value GRa0 of blue picture element B11 and B21 and GRb0 were 128, can selecting first, to proofread and correct GTG value GRa1 be 174, and second to proofread and correct GTG value GRb1 be 0.So, shown in Fig. 7 A, will be respectively 174 and 0 in the GTG value of blue picture element B11 of the present invention and B21.And in next picture, the GTG value of blue picture element B11 and B21 will transfer 0 and 174 respectively to.
As shown in Figure 7, between variant color picture element between apart from bigger, so another embodiment of the present invention also can be applicable to the picture element array that multitude of different ways is arranged.Please refer to Fig. 8 A and Fig. 8 B, it illustrates to being suitable for other two kinds of synoptic diagram that different picture elements are arranged of the second embodiment of the present invention.The picture element arrangement mode that the present invention was suitable for is except same delegation picture element shown in Figure 7 is arrangement mode with the picture element of color, picture element also can be shown in Fig. 8 A, what allow some two laterally adjacent picture element is same color, for example with the series arrangement of GRBBRG.The arrangement mode system of each row can be being staggered of different order, for example adjacent two putting in order of row are respectively the order of GRBBRG and BRGGRB, with this embodiment, picture element G has adjacent identical picture element with picture element B, between at least two monochromatic picture elements between (G and B) apart from can reducing.In addition, the arrangement mode of picture element also can be configured to make two picture elements haply along the adjacent arrangement of direction at the diagonal angle of display panels, shown in Fig. 8 B.In Fig. 8 B, red picture element R and blue picture element B system is arranged side by side along horizontal direction, and green picture element G system be disposed at red picture element R and blue picture element B above or below.Green picture element G is disposed at the mode of the top of red picture element R and blue picture element B, and the mode that green picture element G system is disposed at side under red picture element R and the blue picture element B is staggered the appearance, so that the picture element of same color is adjacent along cornerwise direction of display panels, so the spacing between each monochromatic picture element can reduce, and will help the raising of resolution as the picture element arrangement mode of Fig. 8 A and Fig. 8 B.
The display packing and the display of the colo(u)r bias of image and side-looking image faced in the disclosed compensation of the above embodiment of the present invention, system can improve the colo(u)r bias phenomenon effectively, to improve the image quality of display, wherein, can reach preferable effect to be applied to a multi-domain vertical alignment liquid crystal displays (Multi Domain Vertically Aligned LCD) again.In addition, the present invention can be performed in all picture elements of LCD, also can only implement at specific picture element, all can reach the effect of improving the aberration phenomenon.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any personnel that have the knack of this technical field; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when the institute according to claims define.
Claims (39)
1. display packing that is applied to a LCD, this LCD shows a picture in an image time, wherein this image time may be partitioned into a plurality of subframe times, and this display respectively shows a subframe in each described subframe in the time, and this display packing comprises:
(a) at an original GTG value of pixel, produce a plurality of correction GTG values, wherein, this original GTG value is in corresponding to an original normalizing light L0 and the original side-looking normalizing light L0 ' of facing; And
(b) in described a plurality of subframes in the time, respectively with this pixel of a plurality of driven, described voltage corresponds to described correction GTG value, wherein, each described subframe time and corresponding this correction GTG value determine one and face normalizing light and and proofread and correct the side-looking normalizing light, and each described correction is faced the summation of normalizing light and the absolute value of the difference of corresponding each described correction side-looking normalizing light less than this original absolute value of facing the difference of normalizing light and this original side-looking normalizing light.
2. display packing according to claim 1, it is characterized in that, in this step (b), produce described correction GTG value by inquiring about a data table of comparisons, this data table of comparisons is writing down this original GTG value and pairing at least one group of described correction GTG value.
3. display packing according to claim 1, it is characterized in that, this image time be divided into one for the first time image time with one the second time image time, described correction GTG value comprises that one first proofreaies and correct the GTG value and proofreaies and correct the GTG value with one second, and image time and this first correction GTG value determined one first and faced normalizing light L1 and one first correction side-looking normalizing light L1 ' this first time; This second time image time and this second proofread and correct the GTG value and correspond to one second and face normalizing light L2 and one second correction side-looking normalizing light L2 '; Wherein, | L1-L1 ' |+| L2-L2 ' |＜| L0-L0 ' |.
4. display packing according to claim 3, it is characterized in that, this first is faced normalizing light L1 and is relevant to, when this pixel is subjected to corresponding to this first when proofreading and correct the driven of GTG value, the normalization light transmittance when facing this pixel in this image time first time to the integrated value of time; This first is proofreaied and correct side-looking normalizing light L1 ' and is relevant to, when this pixel is subjected to corresponding to this first when proofreading and correct the driven of GTG value, the normalization light transmittance during this pixel of side-looking in this for the first time in the image time to the integrated value of time; This second is faced normalizing light L2 and is relevant to, when this pixel is subjected to corresponding to this second when proofreading and correct the driven of GTG value, the normalization light transmittance when facing this pixel in this image time second time to the integrated value of time; This second is proofreaied and correct side-looking normalizing light L2 ' and is relevant to, when this pixel is subjected to corresponding to this second when proofreading and correct the driven of GTG value, the normalization light transmittance during this pixel of side-looking in this for the second time in the image time to the integrated value of time.
5. display packing according to claim 3 is characterized in that, this for the first time image time be half of this image time.
6. display packing according to claim 3 is characterized in that, this original GTG value is between this first correction GTG value and this second correction GTG value.
7. display packing according to claim 3 is characterized in that, this first is faced normalizing light L1 and this second and face normalizing light L2 sum and equal this original normalizing light L0 that faces haply.
8. display, this display shows a picture in an image time, and this image time is divided into a plurality of subframe times, and this display respectively shows a subframe in each described subframe in the time, and this display comprises:
At least one pixel;
One proofreaies and correct GTG value generator, and the original GTG value in order at this pixel produces a plurality of correction GTG values, and wherein, this original GTG value is in corresponding to an original normalizing light L0 and the original side-looking normalizing light L0 ' of facing; And
One data driver, be used to described a plurality of subframe in the time, respectively with this pixel of a plurality of driven, described voltage corresponds to described correction GTG value, wherein, each described subframe time and corresponding this correction GTG value determine one and face normalizing light and and proofread and correct the side-looking normalizing light, and each described correction is faced the summation of normalizing light and the absolute value of the difference of corresponding each described correction side-looking normalizing light less than this original absolute value of facing the difference of normalizing light and this original side-looking normalizing light.
9. display according to claim 8, it is characterized in that, this correction GTG value generator has a data table of comparisons, this correction GTG value generator produces described correction GTG value by inquiring about this data table of comparisons, and this data table of comparisons is writing down this original GTG value and pairing at least one group of described correction GTG value.
10. display according to claim 8, it is characterized in that, this image time be divided into one for the first time image time with one the second time image time, described correction GTG value comprises that one first proofreaies and correct the GTG value and proofreaies and correct the GTG value with one second, and image time and this first correction GTG value determined one first and faced normalizing light L1 and one first correction side-looking normalizing light L1 ' this first time; This second time image time and this second proofread and correct the GTG value and correspond to one second and face normalizing light L2 and one second correction side-looking normalizing light L2 '; Wherein, | L1-L1 ' |+| L2-L2 ' |＜| L0-L0 ' |.
11. display according to claim 10, it is characterized in that, this first is faced normalizing light L1 and is relevant to, when this pixel is subjected to corresponding to this first when proofreading and correct the driven of GTG value, the normalization light transmittance when facing this pixel in this image time first time to the integrated value of time; This first is proofreaied and correct side-looking normalizing light L1 ' and is relevant to, when this pixel is subjected to corresponding to this first when proofreading and correct the driven of GTG value, the normalization light transmittance during this pixel of side-looking in this for the first time in the image time to the integrated value of time; This second is faced normalizing light L2 and is relevant to, when this pixel is subjected to corresponding to this second when proofreading and correct the driven of GTG value, the normalization light transmittance when facing this pixel in this image time second time to the integrated value of time; This second is proofreaied and correct side-looking normalizing light L2 ' and is relevant to, when this pixel is subjected to corresponding to this second when proofreading and correct the driven of GTG value, the normalization light transmittance during this pixel of side-looking in this for the second time in the image time to the integrated value of time.
12. display according to claim 10 is characterized in that, this for the first time image time be half of this image time.
13. display according to claim 10 is characterized in that, this original GTG value is between this first correction GTG value and this second correction GTG value.
14. display according to claim 10 is characterized in that, this first is faced normalizing light L1 and this second and faces normalizing light L2 sum and equal this original normalizing light L0 that faces haply.
15. a display, this display show a picture in an image time, this display comprises:
One display panel has one first pixel and one second pixel;
One proofreaies and correct GTG value generator, in order at one first original GTG value of this first pixel and one second original GTG value of this second pixel, produce one first and proofread and correct GTG value and one second correction GTG value, wherein, this first original GTG value corresponds to one first and originally faces normalizing light La and one first original side-looking normalizing light La ', and this second original GTG value corresponds to one second original normalizing light Lb and the one second original side-looking normalizing light Lb ' of facing; And
One data driver, be used in this image time, respectively with one first voltage and this first pixel of one second driven and this second pixel, this first voltage and this second voltage correspond to this first correction GTG value and this second correction GTG value respectively, wherein, when this first pixel during by this first driven, this first pixel has one first and faces normalizing light Lc and one first and proofread and correct side-looking normalizing light Lc '; When this second pixel during by this second driven, this second pixel has one second and faces normalizing light Ld and one second and proofread and correct side-looking normalizing light Ld ';
Wherein, | Lc-Lc ' |+| Ld-Ld ' |＜| La-La ' |+| Lb-Lb ' |.
16. display according to claim 15, it is characterized in that, this correction GTG value generator has a data table of comparisons, this correction GTG value generator produces this first correction GTG value and this second correction GTG value by inquiring about this data table of comparisons, and this data table of comparisons is writing down this first original GTG value and this second original GTG value and pairing this first correction GTG value and this second correction GTG value.
17. display according to claim 15 is characterized in that, this first pixel is adjacent with this second pixel, and this first pixel and this second pixel are same color.
18. display according to claim 15 is characterized in that, this first pixel and this second pixel be haply along the adjacent arrangement of direction at the diagonal angle of this display panel, and this first pixel and this second pixel are same color.
19. display according to claim 15 is characterized in that, this first original GTG value and this second original GTG value are all between this first correction GTG value and this second correction GTG value.
20. display according to claim 15, it is characterized in that this first is faced normalizing light Lc and this second and face normalizing light Ld sum and equal this first original normalizing light La and this second original normalizing light Lb sum of facing faced haply.
21. a display comprises:
One display panel comprises a plurality of pixels, and an original GTG value of each pixel corresponds to an original normalizing light;
A plurality of data lines electrically connect with described pixel;
A plurality of sweep traces electrically connect with described pixel;
A plurality of data drivers are in order to drive described data line;
A plurality of scanner drivers are in order to drive described sweep trace; And
One proofreaies and correct GTG value generator, and in order to proofreading and correct the described original GTG value of described pixel, and output corresponds to a plurality of correction GTG values of the original GTG value that is corrected to a pairing pixel, so that described pixel produces a plurality of correction normalizing lights.
22. display according to claim 21 is characterized in that, when facing this display, this original normalizing light is identical haply with pairing described correction normalizing light sum.
23. display according to claim 21 is characterized in that, this data driver is in order to produce a plurality of a plurality of driving voltages that correspond to described correction GTG value.
24. display according to claim 21 is characterized in that, this correction GTG value generator more comprises a data table of comparisons, in order to store respectively this original GTG value and pairing described correction GTG value.
25. display according to claim 21 is characterized in that, described original GTG value is corrected continuously and dynamically.
26. method in order to the brightness that produces the pixel on the display, this display shows a picture in an image time, this image time is divided into two subframe times, and this display respectively shows a subframe in each described subframe in the time, and this method comprises:
Produce an original GTG value, this original GTG value corresponds to an original normalizing light of this pixel in this image time;
Should original GTG value convert two correction GTG values to; And
Export these two in regular turn and proofread and correct the GTG value to this pixel, proofread and correct normalizing light and proofread and correct normalizing light so that this pixel produces one first respectively at two subframes in the time with one second, this original normalizing light between this first and this second correction normalizing light between.
27. method according to claim 26 is characterized in that, this method more comprises:
Drive a data line of this display, this data line and this pixel electrically connect; And
Drive the one scan line of this display, this sweep trace and this pixel electrically connect.
28. method according to claim 26 is characterized in that, this method more comprises provides a data table of comparisons, in order to store this original GTG value and pairing this first correction GTG value and this second correction GTG value.
29. method according to claim 26 is characterized in that, the original normalizing light of this when facing this display is identical haply with this first correction normalizing light and this second correction normalizing light sum.
30. the display in order to the brightness that produces a pixel, this display shows a picture in an image time, and this image time is divided into two subframe times, and this display respectively shows a subframe in each described subframe in the time, and this display comprises:
One circuit, in order to produce the original GTG value of one of this pixel, this original GTG value corresponds to an original normalizing light of this pixel in this image time;
One converter, in order to should original GTG value converting two correction GTG values to, proofread and correct the GTG value for these two and correspond to this two interior one first correction normalizing lights and one second correction normalizing lights of subframe time respectively, wherein, this original normalizing light is between this first correction normalizing light and this second correction normalizing light.
31. display according to claim 30 is characterized in that, this display more comprises a data table of comparisons, in order to store in order to store this original GTG value and pairing this first correction GTG value and this second correction GTG value.
32. display according to claim 30 is characterized in that, this display more comprises:
One data line electrically connects with this pixel;
The one scan line electrically connects with this pixel;
One data driver is in order to drive this data line; And
The one scan driver is in order to drive this sweep trace.
33. display according to claim 30 is characterized in that, this original normalizing light is identical haply with this first correction normalizing light and this second correction normalizing light sum when facing this display.
34. a display comprises:
Plural number is to pixel, each is described to the pixel one-tenth row or the configuration of embarking on journey, every pair of pixel has one of one first color, one second color and one the 3rd color, two adjacent pixels in the every pair of pixel have same color, described have one first original GTG value and one second original GTG value respectively to two pixels in a pair of pixel in the pixel, this first and this second original GTG value correspond to the one first original normalizing light and the second original normalizing light respectively;
One proofreaies and correct GTG value generator, in order to proofread and correct every pair of pixel this first and this second original GTG value, and export corresponding one first correction GTG value and one second and proofread and correct GTG value these two pixels to correspondence, so that producing one first of correspondence respectively, these two pixels proofread and correct normalizing light and one second correction normalizing light.
35. display according to claim 34 is characterized in that, this first and this second original normalizing light between this first and this second proofread and correct between normalizing light.
36. a display comprises:
A plurality of pixels, described pixel is embarked on journey or is become the row configuration, each pixel has one of one first color, one second color and one the 3rd color, one first pixel and one second pixel that link to each other along a diagonal line have same color, this first and this second pixel have the one first original GTG value and the second original GTG value respectively, this first and this second original GTG value correspond to one first original normalizing light and one second original normalizing light respectively;
One proofreaies and correct GTG value generator, in order to proofread and correct this first and this second original GTG value, and respectively output corresponding one first proofread and correct GTG value and one second proofread and correct the GTG value to this first and this second pixel, proofread and correct normalizing light and one second and proofread and correct normalizing light to produce corresponding one first respectively.
37. a display packing that is applied to a LCD, this LCD show a picture in an image time, wherein this image time may be partitioned into a plurality of subframe times, comprising:
(a) at an original GTG value of one first pixel, produce a plurality of correction GTG values, wherein, this original GTG value is in corresponding to an original normalizing light L0 and the original side-looking normalizing light L0 ' of facing; And
(b) respectively with this first pixel of a plurality of driven, described voltage corresponds to described correction GTG value, wherein, each described subframe time and corresponding this correction GTG value determine one and face normalizing light and and proofread and correct the side-looking normalizing light, and described correction is faced the summation of normalizing light and the absolute value of the difference of corresponding described correction side-looking normalizing light less than this original absolute value of facing the difference of normalizing light and this original side-looking normalizing light.
38., it is characterized in that this display respectively shows a subframe in each described subframe in the time according to the described display packing of claim 37, in this step (b), in described subframe in the time, respectively with this first pixel of described driven.
39. according to the described display packing of claim 37, it is characterized in that, this LCD more comprises second pixel that at least one is adjacent with this first pixel, in this step (b), in this image time, from described voltage, select one to drive this first pixel, and with described second pixel of remaining described driven, in next image time, from described voltage, select one in addition driving this first pixel, and with described second pixel of remaining described driven.
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| CN111091785A (en) * | 2018-10-24 | 2020-05-01 | 上海和辉光电有限公司 | Color cast compensation method and device |
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| JP4650845B2 (en) * | 2005-10-31 | 2011-03-16 | シャープ株式会社 | Color liquid crystal display device and gamma correction method therefor |
| CN101212606B (en) * | 2006-12-25 | 2011-09-28 | 奇美电子股份有限公司 | Pixel driving and image data displaying method |
| CN101488327B (en) * | 2008-01-18 | 2011-11-09 | 中华映管股份有限公司 | Data driving apparatus and method thereof |
| CN101739969B (en) * | 2008-11-24 | 2013-07-24 | 群创光电股份有限公司 | Display device and display method thereof |
| CN101587695B (en) * | 2009-04-09 | 2011-05-18 | 深圳华映显示科技有限公司 | Image processing method capable of reducing color deviation |
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