CN104505039B - The method and module of polarity inversion, array base palte and liquid crystal indicator - Google Patents
The method and module of polarity inversion, array base palte and liquid crystal indicator Download PDFInfo
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- CN104505039B CN104505039B CN201410828200.6A CN201410828200A CN104505039B CN 104505039 B CN104505039 B CN 104505039B CN 201410828200 A CN201410828200 A CN 201410828200A CN 104505039 B CN104505039 B CN 104505039B
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Abstract
The invention discloses the method and module of a kind of polarity inversion, array base palte and liquid crystal indicator, it is related to display technology field, can effectively prevent as public electrode is by affecting for coupling between pixel electrode, and cause the situation of the actual value deviation desired value of public electrode voltages.Methods described includes：The public electrode voltages under current pattern are detected first, then judge public electrode voltages whether outside presetting range, if public electrode voltages are outside presetting range, polarity inversion is carried out to pixel electrode according to preset reversing mode.The present invention is suitable for carrying out polarity inversion to each pixel electrode.
Description
Technical field
The present invention relates to display technology field, more particularly to the method and module of a kind of polarity inversion, array base palte and liquid
Crystal device.
Background technology
With the continuous development of Display Technique, the range of application of display screen is also more and more extensive.In LCD (Liquid
Crystal Display, liquid crystal display) in display screen, by changing the voltage of electric field to realize the deflection of liquid crystal, further
So that pixel electrode is presented corresponding GTG, due to when liquid crystal molecule is chronically at certain fixed voltage, the characteristic of liquid crystal molecule
Can be destroyed, so as to cause the liquid crystal molecule deflect with the change of voltage of electric field, it is therefore desirable to by each pixel
Electrode carries out polarity inversion, to avoid liquid crystal molecule from being chronically at fixed voltage.
At present, to LCD display in the mode that inverted of each pixel electrode have various, such as dot inversion, row reversion,
Column inversion and frame reversion etc..Generally it is 1+2 dot inversion patterns to the inversion mode of pixel electrode, the pixel of 1+2 dot inversion patterns
The polar contribution of electrode is as shown in figure 1, the intermediate polarity difference of adjacent column, the intermediate polarity difference per adjacent rows, and the first row
It is intermediate polarity different from the second row.
However, when showing some pictures under 1+2 dot inversion patterns, as the positive-negative polarity of each pixel electrode voltage is distributed
It is asymmetric, cause public electrode voltages to deviate desired value, so as to cause the grey menu that pixel electrode is presented inaccurate.
For example shown in Fig. 2, the bright pixel, dark pixel in being every row when the picture for needing to show alternately shows, and per two
When the pattern of row display is identical, if the desired value of public electrode voltages is 6V, the pixel electrode of the bright corresponding positive and negative polarity of pixel
Voltage is respectively 11V, 1V, and the pixel electrode voltage of the dark corresponding positive and negative polarity of pixel is 7V, 5V, then each pixel electrode in Fig. 2
Pixel electrode voltage as shown in figure 3, wherein, the value in often going after each pixel electrode voltage superposed average is not equal to public electrode
Voltage, i.e., overall pixel electrode voltage positive-negative polarity distribution are asymmetric so that public electrode by with pixel electrode it
Between the impact that couples, cause the actual value of public electrode voltages to deviate desired value, the actual value and desired value of public electrode voltages
As shown in Figure 4.
The content of the invention
The present invention provides a kind of method and module, array base palte and liquid crystal indicator of polarity inversion, for solving public affairs
The actual value of common-battery pole tension deviates the technical problem of desired value.
To solve above-mentioned technical problem, the present invention is adopted the following technical scheme that：
First aspect provides a kind of method of polarity inversion, including：
Public electrode voltages of the detection under current pattern；
Judge the public electrode voltages whether outside presetting range；
If the public electrode voltages are outside the presetting range, pixel electrode is carried out according to preset reversing mode
Polarity inversion.
Specifically, it is when the current pattern is that bright pixel sum in every row is total with dark pixel equal, described preset
Reversing mode is even column reversing mode, and the polar contribution of the pixel electrode of the even column reversing mode is row per adjacent N
Polarity is identical, and N is the even number more than or equal to 2.
Further, during the current pattern is specially often gone, bright pixel and dark pixel alternately show, and two in each column
Individual bright pixel and two dark pixels alternately show.
Specifically, it is when the current pattern is that each pixel in every row is bright pixel or is dark pixel, described pre-
Reversing mode is put for dot inversion pattern, column inversion pattern or column inversion pattern is organized, the pixel electrode of described group of column inversion pattern
Polar contribution is that the polarity of the row per adjacent M is identical, and M is the integer more than or equal to 2.
Second aspect provides a kind of module of polarity inversion, including：
Detector unit, for public electrode voltages of the detection under current pattern；
Judging unit, for judge the public electrode voltages of detector unit detection whether presetting range it
Outward；
Polarity inversion unit, for judging the public electrode voltages outside the presetting range when the judging unit
When, polarity inversion is carried out to pixel electrode according to preset reversing mode.
Specifically, it is when the current pattern is that bright pixel sum in every row is total with dark pixel equal, described preset
Reversing mode is even column reversing mode, and the polar contribution of the pixel electrode of the even column reversing mode is row per adjacent N
Polarity is identical, and N is the even number more than or equal to 2.
Further, during the current pattern is specially often gone, bright pixel and dark pixel alternately show, and two in each column
Individual bright pixel and two dark pixels alternately show.
Specifically, it is when the current pattern is that each pixel in every row is bright pixel or is dark pixel, described pre-
Reversing mode is put for dot inversion pattern, column inversion pattern or column inversion pattern is organized, the pixel electrode of described group of column inversion pattern
Polar contribution is that the polarity of the row per adjacent M is identical, and M is the integer more than or equal to 2.
The third aspect provides a kind of array base palte, including：The module of above-mentioned polarity inversion.
Fourth aspect provides a kind of liquid crystal indicator, including：Above-mentioned array base palte.
The method and module, array base palte and liquid crystal indicator of the polarity inversion that the present invention is provided, including：Detect first
Public electrode voltages under current pattern, then judge public electrode voltages whether outside presetting range, if public electrode
Voltage then carries out polarity inversion to pixel electrode according to preset reversing mode outside presetting range.By preset reversing mode
Polarity inversion is carried out to each pixel electrode of current pattern, the value in often going after each pixel electrode voltage superposed average is equal to public
The desired value of electrode voltage, i.e., overall pixel electrode voltage positive-negative polarity are distributed symmetrically, such that it is able to effectively prevent due to public affairs
Common electrode is affected by being coupled between pixel electrode, and causes the feelings of the actual value deviation desired value of public electrode voltages
Condition, and then can realize that pixel electrode is presented accurate grey menu.
Description of the drawings
In order to be illustrated more clearly that technical scheme of the invention or of the prior art, below will be to the present invention or prior art
Needed for description, accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only the present invention's
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is the polar contribution schematic diagram of 1+2 dot inversion patterns in prior art；
Fig. 2 is a kind of bright pixel and the distribution schematic diagram of dark pixel of pattern in prior art；
Fig. 3 is the schematic diagram of the pixel electrode voltage of each pixel electrode in Fig. 1 and Fig. 2；
Fig. 4 is the schematic diagram that the actual value of public electrode voltages in prior art deviates desired value；
Fig. 5 is the method flow diagram of polarity inversion in the embodiment of the present invention；
Fig. 6 is a kind of bright pixel and the distribution schematic diagram of dark pixel of pattern in the embodiment of the present invention；
Fig. 7 is the polar contribution schematic diagram of two column inversion patterns in the embodiment of the present invention；
Fig. 8 is the schematic diagram of the pixel electrode voltage of each pixel electrode in Fig. 6 and Fig. 7；
Fig. 9 is the bright pixel and the distribution schematic diagram of dark pixel of another kind of pattern in the embodiment of the present invention；
Figure 10 is the schematic diagram of the pixel electrode voltage of each pixel electrode in Fig. 7 and Fig. 9；
Figure 11 is the polar contribution schematic diagram of four column inversion patterns in the embodiment of the present invention；
Figure 12 is the schematic diagram of the pixel electrode voltage of each pixel electrode in Fig. 9 and Figure 11；
Figure 13 is the bright pixel and the distribution schematic diagram of dark pixel of another pattern in the embodiment of the present invention；
Polar contribution schematic diagrams of the Figure 14 for embodiment of the present invention midpoint reversing mode；
Figure 15 is the schematic diagram of the pixel electrode voltage of each pixel electrode in Figure 13 and Figure 14；
Figure 16 is the polar contribution schematic diagram of column inversion pattern in the embodiment of the present invention；
Figure 17 is the schematic diagram of the pixel electrode voltage of each pixel electrode in Figure 13 and Figure 16；
Figure 18 is the polar contribution schematic diagram of three column inversion patterns in the embodiment of the present invention；
Figure 19 is the schematic diagram of the pixel electrode voltage of each pixel electrode in Figure 13 and Figure 18；
Figure 20 is the modular structure schematic diagram of polarity inversion in the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of method of polarity inversion, effectively can prevent from being subject to and pixel due to public electrode
The impact coupled between electrode, and cause the situation of the actual value deviation desired value of public electrode voltages, as shown in figure 5, described
Method includes：
501st, public electrode voltages of the detection under current pattern.
Specifically, can be by public electrode voltages input comparator, to realize the detection to public electrode voltages.
502nd, judge public electrode voltages whether outside presetting range.
Alternatively, implementing for step 502 can be：Judge that the difference between public electrode voltages and preset voltage is
It is no less than preset difference.For example, preset voltage can be 6V, preset difference can be 2V, then corresponding presetting range be 4V extremely
Between 8V.
Specifically, the actual value and desired value of the public electrode voltages of input can be compared by comparator, with
Judge public electrode voltages whether outside presetting range.Wherein, when judged result be public electrode voltages presetting range it
Outward, export " High " logical signal；When judged result be public electrode voltages within presetting range, output " Low " logic letter
Number.
If the 503, public electrode voltages are outside presetting range, polarity is carried out to pixel electrode according to preset reversing mode
Reversion.
Alternatively, when current pattern is that bright pixel sum in every row is total with dark pixel equal, preset reversing mode is
Even column reversing mode, the polar contribution of the pixel electrode of even column reversing mode is that the polarity arranged per adjacent N is identical, and N is big
In or even number equal to 2.
Pattern for example shown in Fig. 6, the bright pixel sum in often going are equal with dark pixel sum, and often row has two bright pictures
Element and two dark pixels；When N is equal to 2, the polar contribution of the pixel electrode of two column inversion patterns is as shown in Figure 7；If common electrical
The desired value of pole tension is 6V, and pixel electrode voltage respectively 11V, 1V of the corresponding positive and negative polarity of bright pixel, dark pixel are corresponding
Positive and negative polarity pixel electrode voltage be 7V, 5V, then in Fig. 6 the pixel electrode voltage of each pixel electrode as shown in figure 8, right
In often going each pixel electrode voltage be overlapped and it is average after value be equal to public electrode voltages 6V, i.e., overall pixel electrode electricity
Positive pressure negative polarity is distributed symmetrically.
Further, as shown in figure 9, during current pattern is specially often gone bright pixel and dark pixel alternately show, and often
In row, two bright pixel and two dark pixels alternately show.
For example, if the desired value of public electrode voltages is 6V, the pixel electrode voltage point of the corresponding positive and negative polarity of bright pixel
Not Wei 11V, 1V, the pixel electrode voltage of the corresponding positive and negative polarity of dark pixel is 7V, 5V, when N is equal to 2, two column inversion patterns
Pixel electrode polar contribution as shown in fig. 7, each picture of polarity inversion is carried out according to two column inversion patterns to pattern shown in Fig. 9
Plain electrode voltage is as shown in Figure 10, wherein, the value in often going after each pixel electrode voltage superposed average is equal to public electrode voltages
6V, i.e., overall pixel electrode voltage positive-negative polarity are distributed symmetrically.
Again for example, if the desired value of public electrode voltages is 6V, the pixel electrode voltage of the corresponding positive and negative polarity of bright pixel
Respectively 11V, 1V, the pixel electrode voltage of the corresponding positive and negative polarity of dark pixel is 7V, 5V, when N is equal to 4, four column inversion moulds
The polar contribution of the pixel electrode of formula as shown in figure 11, carries out polarity inversion to pattern shown in Fig. 9 according to four column inversion patterns
Each pixel electrode voltage is as shown in figure 12, wherein, the value in often going after each pixel electrode voltage superposed average is equal to public electrode
Voltage 6V, i.e., overall pixel electrode voltage positive-negative polarity are distributed symmetrically.
Alternatively, when current pattern is that each pixel in every row is bright pixel or is dark pixel, preset reversion mould
Formula is dot inversion pattern, column inversion pattern or group column inversion pattern, and the polar contribution for organizing the pixel electrode of column inversion pattern is every
The polarity of adjacent M row is identical, and M is the integer more than or equal to 2.
Pattern for example shown in Figure 13, each pixel in often going are bright pixel or are dark pixel, if public electrode is electric
The desired value of pressure is 6V, and pixel electrode voltage respectively 11V, 1V of the corresponding positive and negative polarity of bright pixel, dark pixel are corresponding
The pixel electrode voltage of positive and negative polarity is 7V, 5V, the polar contribution of the pixel electrode of dot inversion pattern as shown in figure 14, according to
Each pixel electrode voltage that dot inversion pattern carries out polarity inversion to pattern shown in Figure 13 is as shown in figure 15；The picture of column inversion pattern
The polar contribution of plain electrode as shown in figure 16, carries out each pixel electricity of polarity inversion according to dot inversion pattern to pattern shown in Figure 13
Pole tension is as shown in figure 17；When M is equal to 3, the polar contribution of the pixel electrode of three column inversion patterns is as shown in figure 18, according to point
Each pixel electrode voltage that reversing mode carries out polarity inversion to pattern shown in Figure 13 is as shown in figure 19.Figure 15, Figure 17 and Figure 19
In, the value in often going after each pixel electrode voltage superposed average is equal to public electrode voltages 6V, i.e., overall pixel electrode voltage
Positive-negative polarity is distributed symmetrically.
The method of polarity inversion provided in an embodiment of the present invention, by each pixel electricity of the preset reversing mode to current pattern
Pole carries out polarity inversion, and the value in often going after each pixel electrode voltage superposed average is equal to the desired value of public electrode voltages, i.e.,
Overall pixel electrode voltage positive-negative polarity is distributed symmetrically, such that it is able to effectively prevent from being subject to and pixel electrode due to public electrode
Between the impact that couples, and cause the actual value of public electrode voltages to deviate the situation of desired value, and then pixel electricity can be realized
Pole is presented accurate grey menu.
Further, as the realization to method shown in Fig. 5, the embodiment of the present invention additionally provides a kind of mould of polarity inversion
Block, for effectively preventing as public electrode is by affecting for coupling between pixel electrode, and causes public electrode voltages
Actual value deviates the situation of desired value, and as shown in figure 20, the module includes：Detector unit 201, judging unit 202, polarity are anti-
Turn unit 203.
Detector unit 201, for public electrode voltages of the detection under current pattern.
Judging unit 202, for judging the public electrode voltages of the detection of detector unit 201 whether outside presetting range.
Polarity inversion unit 203, for when judging unit 202 judges that public electrode voltages are outside presetting range, pressing
Polarity inversion is carried out to pixel electrode according to preset reversing mode.
Specifically, when current pattern is that bright pixel sum in every row is total with dark pixel equal, preset reversing mode is
Even column reversing mode, the polar contribution of the pixel electrode of even column reversing mode is that the polarity arranged per adjacent N is identical, and N is big
In or even number equal to 2.
Further, during current pattern is specially often gone, bright pixel and dark pixel alternately show, and in each column two it is bright
Pixel and two dark pixels alternately show.
Specifically, when current pattern is that each pixel in every row is bright pixel or is dark pixel, preset reversing mode
For dot inversion pattern, column inversion pattern or group column inversion pattern, the polar contribution for organizing the pixel electrode of column inversion pattern is every phase
The polarity of adjacent M row is identical, and M is the integer more than or equal to 2.
The module of polarity inversion provided in an embodiment of the present invention, by each pixel electricity of the preset reversing mode to current pattern
Pole carries out polarity inversion, and the value in often going after each pixel electrode voltage superposed average is equal to the desired value of public electrode voltages, i.e.,
Overall pixel electrode voltage positive-negative polarity is distributed symmetrically, such that it is able to effectively prevent from being subject to and pixel electrode due to public electrode
Between the impact that couples, and cause the actual value of public electrode voltages to deviate the situation of desired value, and then pixel electricity can be realized
Pole is presented accurate grey menu.
It should be noted that other phases in the module of the polarity inversion provided in the embodiment of the present invention corresponding to each unit
Should describe, may be referred to the correspondence description in Fig. 5, will not be described here.
The embodiment of the present invention additionally provides a kind of array base palte, including the module of above-mentioned polarity inversion.
The module of the polarity inversion can refer to Figure 20, including：Detector unit 201, judging unit 202, polarity inversion
Unit 203.Other corresponding to the module of the polarity inversion included by array base palte provided in the embodiment of the present invention are accordingly retouched
State, may be referred to the correspondence description in Figure 20, will not be described here.
The embodiment of the present invention additionally provides a kind of liquid crystal indicator, including above-mentioned array base palte.
The array base palte can refer to previous embodiment, including the module of polarity inversion.There is provided in the embodiment of the present invention
Display device included by array base palte corresponding to other corresponding descriptions, may be referred in Figure 20 correspondence description, here
Repeat no more.
The method and module of polarity inversion provided in an embodiment of the present invention, array base palte and liquid crystal indicator, Ke Yishi
For polarity inversion being carried out to each pixel electrode, but be not limited only to this.
The liquid crystal indicator is specifically as follows：Liquid crystal panel, mobile phone, panel computer, television set, display, notebook
Any LCD product with display function such as computer, DPF or navigator or part.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in all are answered
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (6)
1. a kind of method of polarity inversion, it is characterised in that include：
Public electrode voltages of the detection under current pattern；
Judge the public electrode voltages whether outside presetting range；
If the public electrode voltages are outside the presetting range, polarity is carried out to pixel electrode according to preset reversing mode
Reversion；
When the current pattern be in every row bright pixel sum with dark pixel sum it is equal when, the preset reversing mode for idol
Ordered series of numbers reversing mode, the polar contribution of the pixel electrode of the even column reversing mode is that the polarity arranged per adjacent N is identical, and N is
Even number more than or equal to 2；
Or, when the current pattern is that each pixel in every row is bright pixel or is dark pixel, the preset reversion
Pattern is dot inversion pattern, column inversion pattern or organizes column inversion pattern, and the polarity of the pixel electrode of described group of column inversion pattern is divided
Cloth is that the polarity of the row per adjacent M is identical, and M is the integer more than or equal to 2.
2. the method for polarity inversion according to claim 1, it is characterised in that bright in the current pattern is every row
When sum of all pixels and dark pixel sum is equal, during the current pattern is specially often gone, bright pixel and dark pixel alternately show, and
And two bright pixel and two dark pixels alternately show in each column.
3. a kind of module of polarity inversion, it is characterised in that include：
Detector unit, for public electrode voltages of the detection under current pattern；
Judging unit, for judging the public electrode voltages of the detector unit detection whether outside presetting range；
Polarity inversion unit, for when the judging unit judges that the public electrode voltages are outside the presetting range,
Polarity inversion is carried out to pixel electrode according to preset reversing mode；
When the current pattern be in every row bright pixel sum with dark pixel sum it is equal when, the preset reversing mode for idol
Ordered series of numbers reversing mode, the polar contribution of the pixel electrode of the even column reversing mode is that the polarity arranged per adjacent N is identical, and N is
Even number more than or equal to 2；
When the current pattern is that each pixel in every row is bright pixel or is dark pixel, the preset reversing mode is
Dot inversion pattern, column inversion pattern or group column inversion pattern, the polar contribution of the pixel electrode of described group of column inversion pattern is every
The polarity of adjacent M row is identical, and M is the integer more than or equal to 2.
4. the module of polarity inversion according to claim 3, it is characterised in that bright in the current pattern is every row
When sum of all pixels and dark pixel sum is equal, during the current pattern is specially often gone, bright pixel and dark pixel alternately show, and
And two bright pixel and two dark pixels alternately show in each column.
5. a kind of array base palte, it is characterised in that include：The module of the polarity inversion as described in any one of claim 3-4.
6. a kind of liquid crystal indicator, it is characterised in that include：Array base palte as claimed in claim 5.
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| CN106782383B (en) * | 2016-12-29 | 2018-10-19 | 深圳市华星光电技术有限公司 | Liquid crystal display apparatus driving circuit and liquid crystal display device |
| CN110070837B (en) * | 2018-01-22 | 2021-08-24 | 奇景光电股份有限公司 | Display device and image processing method |
| CN109671404B (en) * | 2018-12-27 | 2021-05-07 | 惠科股份有限公司 | Display panel driving method and driving device thereof, and display device |
| CN114530114A (en) * | 2022-04-24 | 2022-05-24 | 惠科股份有限公司 | Display screen, public voltage adjusting method and computer readable storage medium |
| CN115249467A (en) * | 2022-08-15 | 2022-10-28 | 上海天马微电子有限公司 | Driving method of display module, display module and display device |
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| CN101819337B (en) * | 2009-02-27 | 2012-02-29 | 北京京东方光电科技有限公司 | Detection circuit and detection method of liquid crystal display device |
| KR101949927B1 (en) * | 2011-11-10 | 2019-02-20 | 엘지디스플레이 주식회사 | Inversion driving method of liquid crystal display device |
| US8860645B2 (en) * | 2012-03-20 | 2014-10-14 | Solomon Systech Limited | Adaptive inversion driving for TFT-LCD |
| CN102789771B (en) * | 2012-08-03 | 2016-06-15 | 京东方科技集团股份有限公司 | Polarity inversion signal conversion method, device and indicating meter |
| CN103065591A (en) * | 2012-09-17 | 2013-04-24 | 友达光电股份有限公司 | Dynamic switching method of liquid craystal display panel drive modes |
| TWI494908B (en) * | 2012-11-14 | 2015-08-01 | Novatek Microelectronics Corp | Liquid crystal display monitor and source driver and control method thereof |
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