CN102338958A - Structure and method for driving double-gate liquid crystal display panel - Google Patents
Structure and method for driving double-gate liquid crystal display panel Download PDFInfo
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- CN102338958A CN102338958A CN2011102736675A CN201110273667A CN102338958A CN 102338958 A CN102338958 A CN 102338958A CN 2011102736675 A CN2011102736675 A CN 2011102736675A CN 201110273667 A CN201110273667 A CN 201110273667A CN 102338958 A CN102338958 A CN 102338958A
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Abstract
The invention relates to a structure and a method for driving a double-gate liquid crystal display panel. The structure comprises a plurality of scanning line units, a plurality of data lines and a pixel array, wherein the pixel array comprises three pixel units; a first pixel unit and a third pixel unit are respectively formed by a row of pixels and are respectively electrically connected to the corresponding rows of pixels through one data line; a second pixel unit is formed by a plurality of rows of pixels and is respectively electrically connected with two rows of pixels through each data line; and the odd scanning line units are sequentially started by the driving structure of the double-gate liquid crystal display panel and data signals are simultaneously input into the pixels through the data lines, and then the even scanning line units are continuously started and data signals are simultaneously input into the pixels through the data lines, so that the first pixel unit and the third pixel unit are in a single-point reverse mode and the second pixel unit is in a double-point reverse mode.
Description
[technical field]
The invention relates to a kind of Drive Structure and driving method of double-gate utmost point display panels, especially a kind of Drive Structure and driving method that adds the double-gate utmost point display panels of double-point inversion mode to the pixel array single-point.
[background technology]
LCD (LCD) has low radiation, volume is little and advantage such as low power consuming; Replace traditional cathode ray tube (CRT) display gradually; And then be widely used in mobile computer, PDA(Personal Digital Assistant), flat-surface television, or on the information products such as mobile phone.Become the major subjects of LCD development and how to improve display quality gradually with reducing production costs.
The image element structure of display panels mainly can be divided into two kinds of single gate (Single-Gate) image element structure and the double-gate utmost point (Double-Gate) image element structures according to the difference of drive pattern.Under identical resolution; Compared to single gate image element structure; Adopt the number of scanning lines of the display panels of double-gate utmost point image element structure to double; The data line number then can be reduced to 1/2nd, therefore adopts the display panels of double-gate utmost point image element structure to use more gate drive chip and less source driving chip.Because the cost and the power consumption of gate drive chip are all low than source driving chip, therefore adopt the design of double-gate utmost point image element structure to reduce production costs greatly and power consumption.
The driving circuit structure synoptic diagram of general dual-gate liquid crystal display device is with reference to shown in Figure 1.Dual-gate liquid crystal display device comprises one source pole driving circuit 200, time schedule controller 210, a gate drive circuit 220 and a display panels 300.Wherein this display panels 300 comprises a horizontal direction setting and the scanline unit G that is parallel to each other, a vertical direction setting and the data line D ' that is parallel to each other and a pixel array P, and wherein data line D ' has the m bar, so m bar data line D ' is D '
m, total n of scanline unit G is so n scanline unit G is G
n, and each scanline unit G
nComprise one first sweep trace G
OnAnd one second sweep trace G
Sn, pixel array P comprises most picture element P
xConnect said; Wherein this source electrode drive circuit 200 can produce data-signal SD '; Wherein this gate drive circuit 220 can produce sweep signal SG; This time schedule controller 210 can produce and drive the required control signal of source electrode drive circuit 200 and gate drive circuit 220, for example bolt-lock pulse signal TP and viewdata signal DATA etc. again.And this gate drive circuit 220 can output scanning signal SG be to scanline unit G in regular turn according to the bolt-lock pulse signal TP that receives, and simultaneously source electrode drive circuit 200 can be exported data-signal SD ' corresponding to the image gray-scale level value respectively to data line D ' according to the viewdata signal DATA that receives.Therefore, under the running of circuit as stated, this display panels 300 can be controlled each picture element P according to the data-signal SD ' of input
xImage show, thereby image is presented on the display panels 300.In display panels 300, each the picture element P among this pixel array P
xHave a thin film transistor (TFT) (TFT) 512 as switch.
In display panels, each picture element itself must drive with the mode of reversal of poles, but with regard to pixel array, the adjacent picture element in array but not necessarily will drive with identical polarity.Present employed pixel array reversal of poles mode has picture frame counter-rotating, row counter-rotating, row counter-rotating and some counter-rotating.And the single-point inversion mode of convention is meant that the polarity of voltage of each picture element in each picture frame and the picture element around it is all opposite; The double-point inversion mode is meant to be unit its polarity of voltage of counter-rotating with single picture element vertically, and along continuous straight runs is unit its polarity of voltage of counter-rotating with two picture elements.For example in patent US20080068516A1, mentioned the double-point inversion mode.What the display panels among Fig. 1 adopted is the reversal of poles mode that single-point adds two point.Particularly, as shown in Figure 1, with odd-numbered scan lines unit G
1, G
3, G
5... the picture element P of connection
xPolarity be followed successively by [+--++--... +], with even-line interlace line unit G
2, G
4, G
6... the picture element P of connection
xPolarity be followed successively by [++--++ ...-].This single-point adds the double-point inversion mode picture element P that above-mentioned double-gate utmost point image element structure makes that the left and right sides of same data line D ' connects that arranges in pairs or groups
xThe positive and negative difference of polarity of voltage in same picture frame can cause that thus picture shows uneven problem, and then cause the picture display quality undesirable.
Please be simultaneously with reference to Fig. 2, Fig. 2 be the oscillogram that sweep trace opening sequence and data line are exported signal in the prior art.The time that wherein defines returing cycle t and be a positive signal of the every output of data line D ' and a negative signal with, and each returing cycle t comprises a very first time section t
1With one second time period t
2As far as the prior art among Fig. 1, Fig. 2, the 1st scanline unit G
1In the first sweep trace G
O1When opening scanning, the time of each data line D ' outputting data signals is called initial very first time section t
1'; The 1st scanline unit G
1In the second sweep trace G
S1And the 2nd scanline unit G
2In the first sweep trace G
O2When opening scanning, the time of data line D ' outputting data signals is second time period t
2, it is initial very first time section t
1' twice; The 2nd scanline unit G
2In the second sweep trace G
S2And the 3rd scanline unit G
3In the first sweep trace G
O3When opening scanning, the time of data line D ' outputting data signals is very first time section t
1, it is similarly initial very first time section t
1' twice; By that analogy, follow-up all time period [t
2-t
1-t
2...] be initial very first time section t
1' twice.Initial thus very first time section t
1' output the data-signal time period [t follow-up with it
2-t
1-t
2...] output data-signal can produce asymmetric situation, make that the picture display quality is undesirable.Simultaneously under the requirement of panel cost; Consider the factor of power consumption; Add the double-point inversion structure based on above-mentioned picture element single-point and make that the picture element polarity of same data line left and right sides connection is opposite, so the positive and negative reversal frequency of data line output signal is bigger, can't reach purpose of power saving more.In addition, in patent US6750835B2, mention the type of drive that adopts the scanning line selection unlatching and, still, before above-mentioned, under the framework of case, adopt the mode power saving of this sweep trace unlatching to be restricted for reaching purpose of power saving.
[summary of the invention]
For addressing the above problem, the present invention provides a kind of double-gate utmost point display panels, and its structure comprises a plurality of scanline unit, many data lines and a pixel array.Scanline unit comprises first sweep trace and second sweep trace.Data line and scanline unit are orthogonal.Pixel array comprises the first picture element unit, the second picture element unit, the 3rd picture element unit; Wherein the first picture element unit and the 3rd picture element unit respectively comprise a row picture element and electrically connect a data line respectively, and the second picture element unit comprises the multiple row picture element and is one group with two row picture elements and electrically connects same data line.
In one of the present invention embodiment, the first picture element unit is the first row picture element, and the second picture element unit is secondary series to a row picture element second from the bottom, and the 3rd picture element unit is a row picture element last.Particularly; Article one, data line electrically connects the row first picture element unit; Last data line electrically connects one and is listed as the 3rd picture element unit, and the each side electric connection one row second picture element unit of each the bar data line in second data line to second from the bottom data line.It is opposite with the polarity of secondary series picture element that first row are set simultaneously, and the polarity of row last and row picture element second from the bottom is opposite, to reach the effect of the first picture element unit and the 3rd picture element unit single-point counter-rotating.Be arranged in second data line to second from the bottom data line, the polarity of left and right sides picture element that is arranged at each data line both sides is identical, to reach the effect of the second picture element unit double-point inversion.
Simultaneously following: as to open odd number bar scanline unit at first in regular turn based on the driving method of above-mentioned double-gate utmost point structure of liquid crystal display panel; And see through the data line outputting data signals simultaneously to picture element; Wherein odd number bar data line output signal is a positive polarity, and even number bar data line output signal is a negative polarity; Continue and open even number bar scanline unit, and see through the data line outputting data signals simultaneously to picture element, wherein odd number bar data line output signal is a negative polarity, and even number bar data line output signal is a positive polarity; So that this first picture element unit and the 3rd picture element unit are to be the single-point counter-rotating, this second picture element unit is to be double-point inversion.
In one of the present invention embodiment, the scanline unit of odd number bar constitutes a plurality of scanline groups, and the scanline unit of even number bar is formed a plurality of scanline groups simultaneously, opens according to the sequential loop of scanline groups then.Time of a positive signal of the every input of definition of data line and a negative signal and be a returing cycle simultaneously; And returing cycle comprises a very first time section and one second time period; Odd number bar data line output cathode property in very first time section, even number bar data line output negative pole property is in second time period; Odd number bar data line output negative pole property, even number bar data line output cathode property.
In one of the present invention embodiment, the scanline unit of per two odd number bars is one group of scanline groups, and the scanline unit of per two even number bars is one group of scanline groups.
In another embodiment of the present invention, the scanline unit of per three odd number bars is one group of scanline groups, and the scanline unit of per three even number bars is one group of scanline groups.
In conjunction with above-described structure of liquid crystal display panel and driving method thereof; The invention solves the data-signal picture asymmetric and that cause by the picture element polarity difference of each data line left and right sides electric connection that each data line was exported because of the follow-up time period of initial very first time Duan Yuqi in the display panels and show bad problem; And simultaneously through odd-numbered scan lines unit in all scanline unit and even-line interlace line unit are divided into a plurality of scanline groups; Change the reversal frequency that the sweep trace opening sequence reduces data line output signal, to reach purpose of power saving more.
[description of drawings]
Fig. 1 is the Drive Structure synoptic diagram of a kind of dual-gate liquid crystal display device in the prior art.
Fig. 2 is the oscillogram of the opening sequence and the data line output signal of sweep trace among Fig. 1.
Fig. 3 is the Drive Structure synoptic diagram of a kind of dual-gate liquid crystal display device among the present invention.
Fig. 4 is the structural representation of the display panels among Fig. 3.
Fig. 5 is the oscillogram of sweep trace opening sequence among the present invention and data line output signal.
Fig. 6 is the oscillogram of another kind of sweep trace opening sequence among the present invention and data line output signal.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the present invention is described further, wherein components identical adopts identical label.
Please refer to Fig. 3, Fig. 3 is the LCD drive circuits structural representation of double-gate electrode structure of the present invention.Dual-gate liquid crystal display device comprises one source pole driving circuit 200, time schedule controller 210, a gate drive circuit 220 and a display panels 100.Wherein this display panels 100 comprises a horizontal direction setting and the scanline unit G that is parallel to each other, a vertical direction setting and the data line D that is parallel to each other and a pixel array P; In the present invention the total m+1 bar of data line D wherein is so m+1 bar data line D is D
M+1, total n of scanline unit G is so n scanline unit G is G
n, this pixel array P comprises most picture element P
x, those picture elements P
xBe arranged on the zone that this scanline unit G and this panel data line D intersect to form, and those picture elements P
xBe electrically connected to corresponding scanning line unit G and data line D respectively.Connect said; Wherein this source electrode drive circuit 200 can produce data-signal SD; Wherein this gate drive circuit 220 can produce sweep signal SG; This time schedule controller 210 can produce and drive the required control signal of source electrode drive circuit 200 and gate drive circuit 220, for example bolt-lock pulse signal TP and viewdata signal DATA etc. again.And this gate drive circuit 220 can output scanning signal SG be to scanline unit G in regular turn according to the bolt-lock pulse signal TP that receives, and simultaneously source electrode drive circuit 200 can be exported data-signal SD corresponding to the image gray-scale level value respectively to data line D according to the viewdata signal DATA that receives.Therefore, under the running of circuit as stated, this display panels 100 can show according to the image of each picture element Px of data-signal SD control of input, thereby image is presented on the display panels 100.
Please again with reference to figure 4, Fig. 4 is the structural representation of the display panels 100 among Fig. 3.Each scanline unit G wherein
nComprise one first sweep trace G
OnAnd one second sweep trace G
Sn, i.e. the 1st scanline unit G
1Comprise the first sweep trace G
O1And the second sweep trace G
S1, the 2nd scanline unit G
2Comprise the first sweep trace G
O2And the second sweep trace G
S2, by that analogy, n scanline unit G
nComprise the first sweep trace G
OnAnd the second sweep trace G
Sn, and each scanline unit G
nThe corresponding pixel array P that electrically connects.In addition, this pixel array P is divided into the plain unit of three a series of paintings, is respectively the first picture element unit 110, the second picture element unit 120, the 3rd picture element unit 130, at first defines this picture element unit 110 and comprises the first row picture element P
x, it is the first row picture element P for this pixel array P
x, and the first row picture element P that the first picture element unit 110 comprises
xAll electrically connect this article one data line D
1, and be electrically connected to the first sweep trace line G among each scanline unit G in regular turn
O1, G
O2... G
OnThen define the second picture element unit 120 and comprise the 2nd row picture element P
xTo the 2nd row reciprocal (i.e. 2m-1 row) picture element P
x(wherein do not comprise first row and last row picture element P
x), wherein the second picture element unit 120 comprises an odd column picture element 121 and an even column picture element 122 again.It is above-mentioned to continue, and wherein the odd column picture element 121 in this second picture element unit 120 electrically connects the 2nd data line D respectively
2To m bar data line D
m, and it all lays respectively at the left side of those data lines D, and be electrically connected to the second sweep trace G among each scanline unit G simultaneously respectively
S1, G
S2..., G
SnEven column picture element 122 in this second picture element unit 120 electrically connects the 2nd data line D respectively
2To m bar data line D
m, and it all lays respectively at the right side of those data lines, and be electrically connected to this first sweep trace G among each scanline unit G simultaneously respectively
O1, G
O2..., G
OnDefine the 3rd picture element unit 130 at last and comprise 2m row picture element P
x, it is last row picture element P for this pixel array P
x, it electrically connects m+1 bar data line D
M+1, and be electrically connected to the second sweep trace G among each scanline unit G respectively
S1, G
S2..., G
SnIn other words, under the structure of this display panels 100, article one data line D
1Electrically connect this first picture element unit 110, be the first row picture element P among this pixel array P
x, m+1 bar data line D
M+1Electrically connect the 3rd picture element unit 130, be last row picture element P among this pixel array P
x, middle data line D
2～D
mIn the left side of each bar data line electrically connect the odd column picture element 121 of the second picture element unit 120 respectively, the right side electrically connects the even column picture element 122 of the second picture element unit 120 respectively.
It is shown in Figure 4 to continue, and below describes the inversion mode of liquid crystal indicator among the present invention, and the some inversion mode of convention is the single-point inversion mode, is meant that promptly the polarity of voltage of each picture element and the picture element around it is all opposite; The double-point inversion mode is meant to be unit its polarity of voltage of counter-rotating with single picture element vertically, and along continuous straight runs is unit its polarity of voltage of counter-rotating with two picture elements.The present invention adopts above-mentioned double-gate utmost point display panels Drive Structure collocation single-point to add the double-point inversion mode, i.e. first row and secondary series picture element P among the present invention
xPolarity opposite, row last and row picture element second from the bottom (i.e. 2m-1 row) P
xPolarity opposite, to reach and article one data line D
1The first picture element unit 110 that electrically connects and and last article one data line D
M+1The mode of the 3rd picture element unit 130 single-points counter-rotating that electrically connects is arranged at this second data line D
2To this second from the bottom data line D
mIn the left and right sides picture element P of each data line D both sides
xPolarity identical, to reach the mode of the second picture element unit, 120 double-point inversions.Particularly, as shown in Figure 4, with odd-numbered scan lines unit G
1, G
3, G
5... the picture element P of connection
xPolarity be followed successively by [+--++--++ ... +], with even-line interlace line unit G
2, G
4, G
6... the picture element P of connection
xPolarity be followed successively by [++--++--...-].So, the above-mentioned above-mentioned single-point of driving framework collocation adds the double-point inversion mode, has kept the second picture element unit 120 to lay respectively at data line D
2～D
mIn the polarity of voltage of odd column picture element 121 and even column picture element 122 of same the data line D left and right sides identical.
Please refer again to Fig. 5, this earlier explanation returing cycle T be a positive signal of the every input of data line D and a negative signal time with, and each returing cycle T comprises a very first time section T
1With one second time period T
2, T wherein
1Or T
2Be to be half returing cycle T/2.The very first time section T that shows in the drawings
1In, all odd number bar data line D
1, D
3, D
5... the data-signal of output is all first polarity, and all even number bar data line D
2, D
4, D
6... the data-signal of output is all second polarity; At the second time period T
2In, all odd number bar data line D
1, D
3, D
5... the data-signal of output is reversed to second polarity, and all even number bar data line D
2, D
4, D
6... the data-signal of output is reversed to first polarity, and this first polarity and this second polarity are positive and negative two kinds of opposite opposed polarities.
Specify the first embodiment of the present invention below, please with reference to Fig. 5.Wherein two odd number scanline unit (for example: the 1st scanline unit G
1With the 3rd scanline unit G
3) as a scanline groups, simultaneously will be wherein two even number scanline unit (for example: the 2nd scanline unit G
2With the 4th scanline unit G
4) as a scanline groups.As shown in Figure 5, at first incite somebody to action wherein the 1st scanline unit G
1With the 3rd scanline unit G
3As the 1st scanline groups S
1The 2nd scanline unit G
2With the 4th scanline unit G
4As the 2nd scanline groups S
2The 5th scanline unit G
5With the 7th scanline unit G
7As the 3rd scanline groups S
3The rest may be inferred, with remaining scanline unit G
6, G
8, G
9... G
nDivide into groups according to above-mentioned rule.Then according to those scanline groups S
1, S
2, S
3... order open each sweep trace successively and scan.Particularly, as shown in the figure, at first open the 1st scanline groups S
1The 1st scanline unit G
1In the first sweep trace G
O1, each data line D is to the 1st scanline unit G simultaneously
1In the first sweep trace G
O1Each picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 1st scanline unit G
1In the first sweep trace G
O1, then open the 1st scanline unit G
1In the second sweep trace G
S1, each data line D is to the 1st scanline unit G simultaneously
1In the second sweep trace G
S1Each picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 1st scanline unit G
1In the second sweep trace G
S1And then open the 1st scanline groups S
1In the 3rd scanline unit G
3In the first sweep trace G
O3, each data line D is to the 3rd scanline unit G simultaneously
3In the first sweep trace G
O3The picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 3rd scanline unit G
3In the first sweep trace G
O3, then open the 3rd scanline unit G
3In the second sweep trace G
S3, each data line D is to the 3rd scanline unit G simultaneously
3In the second sweep trace G
S3The picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 3rd scanline unit G
3In the second sweep trace G
S3Order is opened the 2nd scanline groups S and then
2, the 3rd scanline groups S
3, continuing according to said method drives follow-up scanline groups S
4, S
5, S
6..., and charge into corresponding data-signal.Right each odd-numbered scan lines group S wherein
1, S
3, S
5... the very first time section T of unlatching
1Interior all odd number bar data line D
1, D
3, D
5... the data-signal of output is first polarity, is positive polarity among the figure, and all even number bar data line D
2, D
4, D
6... the data-signal of output is second polarity, and this second polarity is opposite with this first polarity, is negative polarity among the figure.Each even-line interlace line group S wherein again
2, S
4, S
6... the second time period T of unlatching
2Interior all odd number bar data line D
1, D
3, D
5... the data-signal of output is second polarity, and all even number bar data line D
2, D
4, D
6... the data-signal of output is first polarity, and this first polarity and this second polarity are two kinds of positive and negative antipole property.In addition, each very first time section T
1With each second time period T
2Equal in length, be returing cycle T/2 half.
In sum, the initial very first time section t of convention among relative Fig. 2
1' and follow-up time period [t
2-t
1-t
2...] asymmetric and the uneven problem of demonstration visual effect that the left and right sides polarity difference data line D that causes causes, driving method of the present invention has guaranteed that data line D is at all time period [T
1-T
2-T
1-T
2...] on all be symmetrical, improved the uneven problem of demonstration visual effect of liquid crystal panel thus.And collocation is opened scanline groups S after scanline unit G is divided into groups again in regular turn
1, S
2, S
3..., make the reversal frequency 1/T of data line D output signal reduce, promptly scanline unit is divided into one group in twos, and it is original 1/2nd to make that the reversal frequency 1/T of data line D output signal is reduced to, and promptly the power consumption on data line D has been saved half the.
According to said method, specify the second embodiment of the present invention, please be simultaneously with reference to Fig. 3 and Fig. 6.Wherein three odd number scanline unit (for example: the 1st scanline unit G
1, the 3rd scanline unit G
3With the 5th scanline unit G
5) as a scanline groups, simultaneously will be wherein three even number bar scanline unit (for example: the 2nd scanline unit G
2, the 4th scanline unit G
4With the 6th scanline unit G
6) as a scanline groups.As shown in Figure 6, at first incite somebody to action wherein the 1st scanline unit G
1, the 3rd scanline unit G
3With the 5th scanline unit G
5As the 1st scanline groups S
1The 2nd scanline unit G
2, the 4th scanline unit G
4With the 6th scanline unit G
6As the 2nd scanline groups S
2The 7th scanline unit G
7, the 9th scanline unit G
9With the 11st scanline unit G
11As the 3rd scanline groups S
3The rest may be inferred, with remaining scanline unit G
8, G
10... G
nDivide into groups according to above-mentioned rule.Then according to those scanline groups S
1, S
2, S
3... order open each sweep trace successively and scan.As shown in the figure, at first open the 1st scanline groups S
1The 1st scanline unit G
1In the first sweep trace G
O1, each data line D is to the 1st scanline unit G simultaneously
1In the first sweep trace G
O1Each picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 1st scanline unit G
1In the first sweep trace G
O1, then open the 1st scanline unit G
1In the second sweep trace G
S1, each data line D is to the 1st scanline unit G simultaneously
1In the second sweep trace G
S1Each picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 1st scanline unit G
1In the second sweep trace G
S1And then open the 1st scanline groups S
1In the 3rd scanline unit G
3In the first sweep trace G
O3, each data line D is to the 3rd scanline unit G simultaneously
3In the first sweep trace G
O3The picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 3rd scanline unit G
3In the first sweep trace G
O3, then open the 3rd scanline unit G
3In the second sweep trace G
S3, each data line D is to the 3rd scanline unit G simultaneously
3In the second sweep trace G
S3The picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 3rd scanline unit G
3In the second sweep trace G
S3Open the 1st scanline groups S and then
1In the 5th scanline unit G
5In the first sweep trace G
O5, each data line D is to the 5th scanline unit G simultaneously
5In the first sweep trace G
O5The picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 5th scanline unit G
5In the first sweep trace G
O5, then open the 5th scanline unit G
5In the second sweep trace G
S5, each data line D is to the 5th scanline unit G simultaneously
5In the second sweep trace G
S5The picture element P of last connection
xCharge into data-signal, after the pending data signal charges into completion, close the 5th scanline unit G
5In the second sweep trace G
S5Order is opened the 2nd scanline groups S and then
2, the 3rd scanline groups S
3, continuing according to said method drives follow-up scanline groups S
4, S
5, S
6..., and charge into corresponding data-signal.Right each odd-numbered scan lines group S wherein
1, S
3, S
5... the very first time section T of unlatching
1Interior all odd number bar data line D
1, D
3, D
5... the data-signal of output is first polarity, is positive polarity among the figure, and all even number bar data line D
2, D
4, D
6... the data-signal of output is second polarity, and this second polarity is opposite with this first polarity, is negative polarity among the figure.Each even-line interlace line group S wherein again
2, S
4, S
6... the second time period T of unlatching
2Interior all odd number bar data line D
1, D
3, D
5... the data-signal of output is second polarity, and all even number bar data line D
2, D
4, D
6... the data-signal of output is first polarity, and this first polarity and this second polarity are two kinds of positive and negative antipole property.In addition, each very first time section T
1With each second time period T
2Equal in length, be returing cycle T/2 half.
In sum, the initial very first time section t of preceding relatively case Fig. 2
1' and follow-up time period [t
2-t
1-t
2...] asymmetric and cause the problem that shows that visual effect is uneven, driving method of the present invention has guaranteed that data line D is at all time period [T
1-T
2-T
1-T
2...] on all be symmetrical, improved the uneven problem of demonstration visual effect of liquid crystal panel thus.And collocation is with scanline unit G
nOpen scanline groups S after dividing into groups again in regular turn
1, S
2, S
3..., make the reversal frequency 1/T of data line D output signal reduce, promptly three scanline unit are divided into one group, and it is original 1/3rd to make that the reversal frequency 1/T of data line D output signal is reduced to, and promptly the power consumption on data line D has saved 2/3rds.
This this single-point of Drive Structure collocation adds the double-point inversion mode and has improved the picture element P that the intermediate data line D left and right sides connects
xStored polarity of voltage different problems, each very first time section T simultaneously
1With each second time period T
2The output signal that has equated to improve data line is at initial very first time section t
1' time period [t follow-up with it
2-t
1-t
2...] asymmetric problem, therefore improved display quality.Arrange in pairs or groups simultaneously odd number scanline unit G among the scanline unit G
1, G
3, G
5... with even number scanline unit G
2, G
4, G
6... the back of dividing into groups is as a plurality of scanline groups S
1, S
2, S
3..., again according to those scanline groups S
1, S
2, S
3... order scan successively, can reduce the reversal frequency 1/T of data line D, reach purpose of power saving more.
Though the present invention discloses as above with preferred embodiment; So be not in order to limiting the present invention, anyly be familiar with this art, in spirit that does not break away from the present invention and scope; When can doing a little change and retouching, so the present invention's protection domain is as the criterion when looking claims scope person of defining.
Claims (15)
1. the Drive Structure of a double-gate utmost point display panels is characterized in that: comprise
A plurality of scanline unit, each scanline unit include one first sweep trace and one second sweep trace;
Many panel data lines, itself and those scanline unit is orthogonal;
One pixel array, it comprises three picture element unit, is the first picture element unit, the second picture element unit and the 3rd picture element unit, and wherein the first picture element unit and the 3rd picture element unit respectively comprise a row picture element, and the second picture element unit comprises the multiple row picture element;
Wherein, the first picture element unit and the 3rd picture element unit electrically connect a data line respectively, and the picture element two in the second picture element unit is classified same data line of one group of electric connection as.
2. the Drive Structure of double-gate utmost point display panels as claimed in claim 1 is characterized in that: this first picture element unit is the first row picture element, and this second picture element unit is secondary series to a row picture element second from the bottom, and the 3rd picture element unit is a row picture element last.
3. the Drive Structure of double-gate utmost point display panels as claimed in claim 2; It is characterized in that: this article one data line electrically connects this row first picture element unit; This last data line electrically connects this and one is listed as the 3rd picture element unit, and the each side electric connection one of each the bar data line in this second data line to this second from the bottom data line is listed as this second picture element unit.
4. the Drive Structure of double-gate utmost point display panels as claimed in claim 3; It is characterized in that: these first row are opposite with the polarity of secondary series picture element; The polarity of row last and row picture element second from the bottom is opposite, to reach the effect of the first picture element unit and the 3rd picture element unit single-point counter-rotating.
5. the Drive Structure of double-gate utmost point display panels as claimed in claim 3; It is characterized in that: be arranged in this second data line to this second from the bottom data line; The polarity of left and right sides picture element that is arranged at each data line both sides is identical, to reach the effect of the second picture element unit double-point inversion.
6. the driving method of a double-gate utmost point display panels as claimed in claim 1 is characterized in that:
Open odd number bar scanline unit at first in regular turn, and charge into data-signal to this picture element through this data line simultaneously, wherein odd number bar data line input signal is a positive polarity, and even number bar data line input signal is a negative polarity;
Continue and open even number bar scanline unit, and charge into data-signal to this picture element through this data line simultaneously, wherein odd number bar data line input signal is a negative polarity, and even number bar data line input signal is a positive polarity;
So that this first picture element unit and the 3rd picture element unit are to be the single-point counter-rotating, this second picture element unit is to be double-point inversion.
7. the driving method of double-gate utmost point display panels as claimed in claim 6 is characterized in that: the scanline unit of this odd number bar is constituted by a plurality of scanline groups.
8. the driving method of double-gate utmost point display panels as claimed in claim 7 is characterized in that: this scanline groups is that the scanline unit of per two odd number bars is one group.
9. the driving method of double-gate utmost point display panels as claimed in claim 7 is characterized in that: this scanline groups is that the scanline unit of per three odd number bars is one group.
10. the driving method of double-gate utmost point display panels as claimed in claim 6 is characterized in that: the scanline unit of this even number bar is constituted by a plurality of scanline groups.
11. the driving method of double-gate utmost point display panels as claimed in claim 10 is characterized in that: this scanline groups is that per two even number bar scanline unit are one group.
12. the driving method of double-gate utmost point display panels as claimed in claim 10 is characterized in that: this scanline groups is that per three even number bar scanline unit are one group.
13. the driving method like claim 7 or 10 described double-gate utmost point display panels is characterized in that: a scanline groups circulation unlatching more than the scanline unit of a scanline groups and even number bar more than the scanline unit of this odd number bar.
14. the driving method of double-gate utmost point display panels as claimed in claim 6; It is characterized in that: time of a positive signal of the every input of those data lines and a negative signal and be a returing cycle, and returing cycle comprises a very first time section and one second time period.
15. the driving method of double-gate utmost point display panels as claimed in claim 14 is characterized in that: wherein in the very first time of this returing cycle section, odd number bar data line output cathode property, even number bar data line output negative pole property; Simultaneously in second time period of this returing cycle, odd number bar data line output negative pole property, even number bar data line output cathode property.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102736675A CN102338958A (en) | 2011-09-15 | 2011-09-15 | Structure and method for driving double-gate liquid crystal display panel |
| TW100137789A TWI450261B (en) | 2011-09-15 | 2011-10-18 | Lcd panel with the dual gate structure and the driving method of the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102736675A CN102338958A (en) | 2011-09-15 | 2011-09-15 | Structure and method for driving double-gate liquid crystal display panel |
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| TW (1) | TWI450261B (en) |
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Also Published As
| Publication number | Publication date |
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| TWI450261B (en) | 2014-08-21 |
| TW201312535A (en) | 2013-03-16 |
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Application publication date: 20120201 |