CN101271207A - Liquid crystal display board - Google Patents
Liquid crystal display board Download PDFInfo
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- CN101271207A CN101271207A CNA2007100736509A CN200710073650A CN101271207A CN 101271207 A CN101271207 A CN 101271207A CN A2007100736509 A CNA2007100736509 A CN A2007100736509A CN 200710073650 A CN200710073650 A CN 200710073650A CN 101271207 A CN101271207 A CN 101271207A
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- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 13
- 239000010409 thin film Substances 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 238000009924 canning Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 13
- 230000005684 electric field Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000012512 characterization method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
A liquid crystal display panel comprises a plurality of parallel scanning lines, a plurality of parallel data lines which are insulated and intersected with the canning lines, a plurality of a first data driving circuits and a plurality of a second data driving circuits. A plurality of scanning lines and a plurality of data lines define a plurality of sub-pixels which process reversal driving in the running direction according to a double-line mode. The first data driving circuits and the second data driving circuits are used for providing driving voltages to be correspondingly connected with data lines. The driving voltages provided by the first data driving circuits and the second data driving circuits have reverse polarities.
Description
Technical field
The present invention relates to a kind of display panels.
Background technology
Because advantages such as display panels has gently, approaches, power consumption is little are widely used in modernized information equipments such as TV, notebook computer, mobile phone, personal digital assistant.See also Fig. 1 and Fig. 2, Fig. 1 is a kind of synoptic diagram of prior art display panels, and Fig. 2 is the synoptic diagram of the driving method of display panels shown in Figure 1.This display panels 10 comprises liquid crystal layer (scheme do not show), scan driving circuit 11 and the data drive circuit 12 of second substrate (figure does not show), between this two substrate that one first substrate (figure do not show), is oppositely arranged with this first substrate.
This first substrate comprises that many sweep traces that are parallel to each other 13, many are parallel to each other and the data line 14, a plurality of pixel electrode 151 that intersect vertically with these sweep trace 13 insulation and be positioned at a plurality of thin film transistor (TFT)s 15 of this sweep trace 13 and these data line 14 infalls.The grid of this thin film transistor (TFT) 15 (not label) is connected to this sweep trace 13, and source electrode (not label) is connected to this data line 14, and drain electrode (not label) is connected to this pixel electrode 151.This scan drive circuit 11 produces sweep signal and is used for driving this sweep trace 13.This data drive circuit 12 is used for providing driving voltage for this data line 14.
This sweep trace 13 is a sub-pixel 16 with the Minimum Area that this data line 14 is defined, and the sub-pixel of each row is according to the sequence period seniority among brothers and sisters of R sub-pixel 16, G sub-pixel 16, B sub-pixel 16.A continuous R sub-pixel 16, a G sub-pixel 16 and a B sub-pixel 16 constitute a pixel (not label).This second substrate comprises a plurality of public electrodes 152 relative with pixel electrode 151.
When sweep signal was loaded into the grid of this thin film transistor (TFT) 15 by this sweep trace 13, this thin film transistor (TFT) 15 was opened.This moment, one driving voltage was loaded into this pixel electrode 151 by source electrode, the drain electrode of this data line 14 and this thin film transistor (TFT) 15.Usually be loaded a stable common electric voltage on this public electrode 152.So, produce an electric field between this pixel electrode 151 and this public electrode 152, be in the corresponding certain angle that reverses of liquid crystal molecule in this electric field, feasible corresponding sub-pixel 16 printing opacities.When the electric field that loads during greater than certain intensity, light just can't penetrate liquid crystal molecule, thereby makes that corresponding sub-pixel 16 is light tight.
Yet liquid crystal molecule has a specific character, and it can not be under some fixed voltages always, if the time is of a specified duration excessively, even voltage is canceled, liquid crystal molecule also can be destroyed and can't reverse according to the variation of electric field again because of its molecular characterization.
Therefore, this display panels 10 adopts reversal of poles driving method to avoid liquid crystal molecule to lose molecular characterization because of being in for a long time under the same voltage.
The driving method of this display panels 10 is as follows: on the horizontal direction, the polarity of the driving voltage of per two adjacent subpixels 16 of each row is opposite, be "+-+-+-+-+-... ".On the vertical direction, the sub-pixel 16 of each row is that a component becomes some groups according to every adjacent two sub-pixels 16, and the polarity of every group driving voltage is identical, and the polarity of the driving voltage of every two adjacent groups is opposite, promptly " ++--++--++ ... ".During from the first frame picture to the second frame picture, the polarity of the driving voltage of each sub-pixel 16 is reversed, and promptly negative polarity is reversed to positive polarity, and positive polarity is reversed to negative polarity.Above-mentioned reversal of poles driving method is called bifilar mode.
Simultaneously, in the former frame picture, the pixel that is close on the vertical direction of the pixel of each printing opacity of this display panels 10 and the horizontal direction all is lighttight pixel, and the pixel that is close on the vertical direction of each lighttight pixel and the horizontal direction all is the pixel (pixel of drawing oblique line among Fig. 2 is lighttight pixel) of printing opacity.And in the one frame picture of back, each pixel all changes show state, and promptly the pixel of printing opacity becomes lighttight pixel, and lighttight pixel becomes the pixel of printing opacity.
For the normally white display panels, during load driver voltage, light can not see through liquid crystal molecule to this pixel electrode 251 fully; Loading is during greater than the driving voltage of certain intensity, and light can't penetrate, and is promptly light tight.Concerning each row, in each frame picture that this display panels 10 shows, the sub-pixel 16 of the printing opacity of positive polarity is quantitatively also inequality with the sub-pixel 16 of the printing opacity of negative polarity.As shown in Figure 2 each the row sub-pixel, as can be seen, in all sub-pixels of printing opacity, sub-pixel 16 quantity of positive polarity are not equal to the quantity of the sub-pixel 16 of negative polarity.
With the first behavior example, wherein, the number of the printing opacity sub-pixel 16 of positive polarity is more than the number of the printing opacity sub-pixel 16 of negative polarity.From the first frame picture to the second frame picture time, because the sub-pixel 16 at the first frame picture iuuminting shows as light tight in the second frame picture, lighttight sub-pixel 16 shows as printing opacity in the second frame picture, so saltus step can take place the driving voltage of each sub-pixel 16 pairing pixel electrode 151.Because the saltus step meeting of the driving voltage of each pixel electrode 151 causes the same phase deviation of common electric voltage of corresponding public electrode 152, and the printing opacity sub-pixel 16 of the positive polarity of first row is more than the printing opacity sub-pixel 16 of negative polarity, so from the first frame picture to the second frame picture time, actual the offseting downward of common electric voltage of the public electrode 152 of a plurality of sub-pixel correspondences of first row.Because common electric voltage offsets downward, make its actual value less than ideal value, thereby the electric field that causes being loaded on sub-pixel R and the sub-pixel B is greater than ideal value, the electric field that is loaded on the sub-pixel G is less than ideal value.Thereby the shown real screen of included a plurality of sub-pixels of first row 16 is green partially.In fact, the shown real screen of each row all can produce colour cast, so the whole image that this display panels 10 shows has colour cast.
Summary of the invention
Problem for the display frame colour cast that solves the prior art display panels is necessary to provide a kind of display panels that can effectively eliminate the display frame colour cast.
A kind of display panels, it comprises many parallel scanning beams, many parallel and data line, at least one first data drive circuit and at least one second data drive circuit that intersect with this sweep trace insulation, this multi-strip scanning line defines a plurality of sub-pixels with these many data lines, and these a plurality of sub-pixels carry out inversion driving according to bifilar mode on line direction.This first data drive circuit is used for providing driving voltage for the data line that correspondence is connected with this second data drive circuit.The driving voltage polarity that this first data drive circuit and this second data drive circuit are provided is opposite.
Compared to prior art, this display panels utilizes this first data drive circuit and this second data drive circuit to provide opposite polarity driving voltage to corresponding sub-pixel, make the sub-pixel numbers of the positive polarity that each is gone equal the sub-pixel numbers of negative polarity, thereby can not cause the common electric voltage skew, and then can not produce colour cast.
Description of drawings
Fig. 1 is a kind of synoptic diagram of prior art display panels.
Fig. 2 is the driving method synoptic diagram of display panels shown in Figure 1.
Fig. 3 is the synoptic diagram of display panels one better embodiment of the present invention.
Fig. 4 is the driving method synoptic diagram of display panels shown in Figure 3.
Embodiment
See also Fig. 3 and Fig. 4, Fig. 3 is the synoptic diagram of display panels one better embodiment of the present invention, and Fig. 4 is the synoptic diagram of the driving method of display panels shown in Figure 3.This display panels 20 comprises liquid crystal layer (scheme do not show), scan driving circuit 21, a plurality of first data drive circuit 221 and a plurality of second data drive circuit 222 of second substrate (figure does not show), between this two substrate that one first substrate (figure do not show), is oppositely arranged with this first substrate.
This first substrate comprises that many sweep traces that are parallel to each other 23, many are parallel to each other and the data line 24, a plurality of pixel electrode 251 that intersect vertically with these sweep trace 23 insulation and be positioned at a plurality of thin film transistor (TFT)s 25 of this sweep trace 23 and these data line 24 infalls.
This first data drive circuit 221 and this second data drive circuit 222 be equal many data lines 24 of corresponding linking number respectively.These a plurality of first data drive circuits 221 and this a plurality of second data drive circuits 222 are provided with at interval, are one second data circuit 222 between promptly per two first data circuit 221, are one first data circuit 221 between per two second data circuit 222.This scan drive circuit 21 produces sweep signal and is used for scanning this sweep trace 23.This first data drive circuit 221 is used for respectively providing driving voltage for many data lines 24 that correspondence is connected with this second data drive circuit 222.
This sweep trace 23 is a sub-pixel 26 with the Minimum Area that this data line 24 is defined, and the sub-pixel 26 of each row is according to the sequence period seniority among brothers and sisters of R sub-pixel 26, G sub-pixel 26, B sub-pixel 26.Continuous a R sub-pixel 26, a G sub-pixel 26, a B sub-pixel 26 constitute a pixel (not label).This second substrate comprises the public electrode 252 that a plurality of and pixel electrode 251 are relative.
This second substrate comprises a plurality of public electrodes 252 relative with pixel electrode 251.
When sweep signal was loaded on the grid of this thin film transistor (TFT) 25 via this sweep trace 23, this thin film transistor (TFT) 25 was opened.This moment, one driving voltage was loaded into this pixel electrode 251 by source electrode, the drain electrode of this data line 24 and this thin film transistor (TFT) 25.Usually be loaded a stable common electric voltage on this public electrode 252.So, produce an electric field between this pixel electrode 251 and this public electrode 252, thereby make the corresponding certain angle that reverses of the liquid crystal molecule that is in this electric field, corresponding different light transmittances, feasible corresponding sub-pixel 26 printing opacities.When the electric field that loads during greater than certain intensity, light just can't penetrate liquid crystal molecule, thereby makes that corresponding sub-pixel 26 is light tight.
The driving method of this display panels 20 is as follows:
On the horizontal direction, on each row, opposite each other with the polarity of per two adjacent subpixels 26 in a plurality of sub-pixels 26 that these first data drive circuit, 221 corresponding data line 24 are connected, opposite each other with the polarity of per two adjacent subpixels 26 in a plurality of sub-pixels 26 that these second data drive circuit, 222 corresponding data line 24 are connected.The polarity respective opposite of the driving voltage that this first data drive circuit 221 and this second data drive circuit 222 are provided.That is, the polarity of the driving voltage that provides of this first data drive circuit 221 for "+-+-+-+-+-... ", the polarity of the driving voltage that this second data drive circuit 222 provides for "+-+-+-+-+... ".
On the vertical direction, the sub-pixel 26 of each row is that a component becomes a plurality of groups according to every adjacent two sub-pixels 26, and the polarity of every group driving voltage is identical, and the polarity of the driving voltage of every two adjacent groups is opposite, promptly " ++--++--++ ... ".From the first frame picture to the second frame picture time, the polarity of the driving voltage of each sub-pixel 26 is reversed, and negative polarity is reversed to positive polarity, and positive polarity is reversed to negative polarity, promptly takes bifilar mode to drive on the vertical direction.
Simultaneously, in the first frame picture, the pixel that is close on the vertical direction of the pixel of each printing opacity of this display panels 20 and the horizontal direction is lighttight pixel, and the pixel that is close on the vertical direction of each lighttight pixel and the horizontal direction is the pixel (pixel of drawing oblique line among Fig. 4 is lighttight pixel) of printing opacity.And in the second frame picture, each pixel all changes show state, and promptly the pixel of printing opacity becomes lighttight pixel, and lighttight pixel becomes the pixel of printing opacity.
For the normally white display panels, this pixel electrode 251 not during load driver voltage light can see through liquid crystal molecule fully, light can't penetrate when loading greater than certain intensity driving voltage, and is promptly light tight.From each row, in each frame picture that this display panels 20 shows, the number of the sub-pixel 26 of the printing opacity of positive polarity is identical with the number of the sub-pixel 26 of the printing opacity of negative polarity.As shown in Figure 4 each the row sub-pixel 26, as can be seen, in all sub-pixels 26 of printing opacity, the number of the sub-pixel 26 of positive polarity equals the number of the sub-pixel 26 of negative polarity.
With the first behavior example, wherein, the printing opacity sub-pixel 26 of positive polarity equals the printing opacity sub-pixel 26 of negative polarity.From the first frame picture to the second frame picture time, because the sub-pixel 26 at the first frame picture iuuminting shows as light tight in the second frame picture, lighttight sub-pixel 26 shows as printing opacity in the second frame picture, so saltus step can take place the driving voltage of each sub-pixel 26 pairing pixel electrode 251.Again because the saltus step meeting of the driving voltage of each pixel electrode 251 causes the same phase deviation of common electric voltage of corresponding public electrode 252, and the printing opacity sub-pixel 26 of the positive polarity of first row equals the printing opacity sub-pixel 26 of negative polarity, so from the first frame picture to the second frame picture time, the actual not skew of the common electric voltage of the public electrode 252 of a plurality of sub-pixels 26 correspondences of first row.Because common electric voltage is skew not, make its actual value equal ideal value, thereby the electric field that is loaded on sub-pixel R and the sub-pixel B equal ideal value, the electric field that is loaded on the sub-pixel G also equals ideal value.Thereby the included a plurality of sub-pixels 16 shown real screen of first row do not have color displacement.Therefore the whole image of this display panels demonstration can not produce colour cast.
When comprising five first data drive circuits and five second data drive circuits of being provided with at interval respectively, this display panels 20 is provided with at interval, and the number of this first data drive circuit 221 and 222 respective data lines 24 of this second data drive circuit is at 432 o'clock, this display panels 20 is corresponding 1440 pixels on each row, and is consistent with the horizontal resolution of 19 cun wide screens just.
This display panels 20 utilizes this first data drive circuit 221 and this second data drive circuit 222 to provide opposite polarity driving voltage to corresponding sub-pixel 26, make the number of printing opacity sub-pixel 26 of the positive polarity of each row equal the number of the printing opacity sub-pixel 26 of negative polarity, thereby can not cause the common electric voltage skew, and then can not produce colour cast.
Claims (9)
1. display panels, it comprises many sweep traces that are parallel to each other, many the data lines that are parallel to each other and intersect with the insulation of this sweep trace, a plurality of first data drive circuits and a plurality of second data drive circuit, this multi-strip scanning line defines a plurality of sub-pixels with these many data lines, these a plurality of sub-pixels carry out inversion driving according to bifilar mode on line direction, this first data driving circuit is used for providing driving voltage for the data line that correspondence is connected with this second data drive circuit, it is characterized in that: the driving voltage polarity that this first data drive circuit and this second data drive circuit are provided is opposite.
2. display panels as claimed in claim 1 is characterized in that: this first data drive circuit equates with the data line number that this second data drive circuit is driven.
3. display panels as claimed in claim 2, it is characterized in that: every adjacent two sub-pixel polarity that each row is gone up a plurality of sub-pixels that are connected with this first data drive circuit corresponding data line are opposite, and every adjacent two sub-pixel polarity of a plurality of sub-pixels that are connected with this second data drive circuit corresponding data line are opposite.
4. display panels as claimed in claim 1 is characterized in that: these a plurality of sub-pixels comprise R sub-pixel, G sub-pixel and the B sub-pixel of sequence period seniority among brothers and sisters, and continuous this R sub-pixel, this G sub-pixel and this B sub-pixel constitute a pixel.
5. display panels as claimed in claim 4, it is characterized in that: the sub-pixel of each row is that a component becomes some groups according to every adjacent two sub-pixels, and the polarity of the driving voltage of every group of sub-pixel is identical, the polarity of the driving voltage of every two adjacent groups sub-pixel is opposite, from the former frame picture to back one frame picture the time, the polarity of the driving voltage of each sub-pixel is reversed.
6. display panels as claimed in claim 5, it is characterized in that: the vertical direction that pixel was close to and the pixel on the horizontal direction of each printing opacity are light tight, vertical direction that each lighttight pixel was close to and the pixel printing opacity on the horizontal direction, in the one frame picture of back, the pixel of printing opacity becomes light tight, and lighttight pixel becomes printing opacity.
7. display panels as claimed in claim 1 is characterized in that: this display panels further comprises a plurality of thin film transistor (TFT)s that are positioned at this sweep trace and this data line infall.
8. display panels as claimed in claim 2 is characterized in that: this display panels further comprises scan driving circuit, and this scan drive circuit is used for driving this sweep trace.
9. display panels as claimed in claim 3, it is characterized in that: the number of this first data drive circuit and this second data drive circuit is 5, and the number of this first data drive circuit and this second data drive circuit corresponding data line is 432.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100736509A CN101271207A (en) | 2007-03-23 | 2007-03-23 | Liquid crystal display board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100736509A CN101271207A (en) | 2007-03-23 | 2007-03-23 | Liquid crystal display board |
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| Publication Number | Publication Date |
|---|---|
| CN101271207A true CN101271207A (en) | 2008-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100736509A Pending CN101271207A (en) | 2007-03-23 | 2007-03-23 | Liquid crystal display board |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104238224A (en) * | 2013-06-07 | 2014-12-24 | 元太科技工业股份有限公司 | Display panel and method for manufacturing the same |
| WO2016110057A1 (en) * | 2015-01-08 | 2016-07-14 | 京东方科技集团股份有限公司 | Array substrate, display device, and driving method therefor |
| CN107301851A (en) * | 2017-08-03 | 2017-10-27 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and the liquid crystal display device with liquid crystal display panel |
| WO2019037554A1 (en) * | 2017-08-24 | 2019-02-28 | 惠科股份有限公司 | Method for driving display panel, driving apparatus of display panel, and display apparatus |
| US10297215B2 (en) | 2017-08-03 | 2019-05-21 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Liquid crystal display panel having alternate polarities for pairs of pixels in column and liquid crystal display device having the same |
| WO2019119813A1 (en) * | 2017-12-18 | 2019-06-27 | 惠科股份有限公司 | Method and device for driving display panel, and display device |
| WO2020135075A1 (en) * | 2018-12-26 | 2020-07-02 | 惠科股份有限公司 | Display and driving device and method for display panel thereof |
| CN111489712A (en) * | 2019-01-29 | 2020-08-04 | 咸阳彩虹光电科技有限公司 | Pixel matrix driving device and display |
| CN114326227A (en) * | 2021-12-29 | 2022-04-12 | 成都天马微电子有限公司 | Display panel, driving method thereof and display device |
| CN114530129A (en) * | 2021-10-29 | 2022-05-24 | 滁州惠科光电科技有限公司 | Display panel driving method, display panel driving device and display equipment |
-
2007
- 2007-03-23 CN CNA2007100736509A patent/CN101271207A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104238224A (en) * | 2013-06-07 | 2014-12-24 | 元太科技工业股份有限公司 | Display panel and method for manufacturing the same |
| US9542879B2 (en) | 2013-06-07 | 2017-01-10 | E Ink Holdings Inc. | Display panel |
| WO2016110057A1 (en) * | 2015-01-08 | 2016-07-14 | 京东方科技集团股份有限公司 | Array substrate, display device, and driving method therefor |
| US9784997B2 (en) | 2015-01-08 | 2017-10-10 | Boe Technology Group Co., Ltd. | Array substrate, display device, and driving method therefor |
| CN107301851A (en) * | 2017-08-03 | 2017-10-27 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and the liquid crystal display device with liquid crystal display panel |
| WO2019024156A1 (en) * | 2017-08-03 | 2019-02-07 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device having same |
| US10297215B2 (en) | 2017-08-03 | 2019-05-21 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Liquid crystal display panel having alternate polarities for pairs of pixels in column and liquid crystal display device having the same |
| WO2019037554A1 (en) * | 2017-08-24 | 2019-02-28 | 惠科股份有限公司 | Method for driving display panel, driving apparatus of display panel, and display apparatus |
| WO2019119813A1 (en) * | 2017-12-18 | 2019-06-27 | 惠科股份有限公司 | Method and device for driving display panel, and display device |
| US11151958B2 (en) | 2017-12-18 | 2021-10-19 | HKC Corporation Limited | Driving method and driving apparatus of display panel, and display apparatus |
| WO2020135075A1 (en) * | 2018-12-26 | 2020-07-02 | 惠科股份有限公司 | Display and driving device and method for display panel thereof |
| US11393426B2 (en) | 2018-12-26 | 2022-07-19 | HKC Corporation Limited | Display and driving device for driving high and low voltage data to adjacent pixels and method thereof |
| CN111489712A (en) * | 2019-01-29 | 2020-08-04 | 咸阳彩虹光电科技有限公司 | Pixel matrix driving device and display |
| CN114530129A (en) * | 2021-10-29 | 2022-05-24 | 滁州惠科光电科技有限公司 | Display panel driving method, display panel driving device and display equipment |
| CN114530129B (en) * | 2021-10-29 | 2023-06-30 | 滁州惠科光电科技有限公司 | Display panel driving method, display panel driving device and display equipment |
| CN114326227A (en) * | 2021-12-29 | 2022-04-12 | 成都天马微电子有限公司 | Display panel, driving method thereof and display device |
| CN114326227B (en) * | 2021-12-29 | 2024-02-23 | 成都天马微电子有限公司 | Display panel, driving method thereof and display device |
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Open date: 20080924 |