CN109147687A - Display driving method and display device - Google Patents
Display driving method and display device Download PDFInfo
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- CN109147687A CN109147687A CN201810887117.4A CN201810887117A CN109147687A CN 109147687 A CN109147687 A CN 109147687A CN 201810887117 A CN201810887117 A CN 201810887117A CN 109147687 A CN109147687 A CN 109147687A
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- 239000004973 liquid crystal related substance Substances 0.000 description 13
- 239000002956 ash Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
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- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention provides a kind of display driving method and display device.The display driving method includes in a frame image time, when the data-signal needs on a data line switch to target gray scale from current gray and current gray is equal with target gray scale, judge whether the polarity of the corresponding driving voltage of target gray scale driving voltage corresponding with current gray is identical, and in the polarity difference of the corresponding driving voltage of target gray scale driving voltage corresponding with current gray, according to preset first over-driving look-up table, target gray scale and current gray search to obtain first and overdrive grayscale, and it overdrives the corresponding driving voltage of grayscale to data line load described first, it can be avoided mistake in the prior art of overdriving, improve the charging effect of sub-pixel, reduce display colour cast.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of display driving methods and display device.
Background technique
With the development of display technology, the planes such as liquid crystal display (Liquid Crystal Display, LCD) display dress
It sets because having many advantages, such as that high image quality, power saving, fuselage is thin and has a wide range of application, and is widely used in mobile phone, TV, a number
The various consumer electrical products such as word assistant, digital camera, laptop, desktop computer, become the master in display device
Stream.
Liquid crystal display device on existing market is largely backlight liquid crystal display comprising liquid crystal display panel and
Backlight module (backlight module).The working principle of liquid crystal display panel is put in the parallel glass substrate of two panels
Liquid crystal molecule is set, liquid crystal molecule is controlled whether by being powered and changes direction, the light refraction of backlight module is come out and generates picture
Face.
In order to reduce production cost, product competitiveness is promoted.The prior art proposes three gate architectures (Tri- of one kind
The quantity of scan line is become original three times, while making the sub-pixel in each pixel unit by display panel Gate)
It is arranged along column direction, while the quantity for reducing data line is original one third, can reduce source driving chip (Source
Drive IC) pin number, to reduce production cost.Further, during liquid crystal display panel drives, often
Presence factor pixel undercharge causes liquid crystal deflection insufficient, and then the case where generation colour cast, in three gate architectures (Tri-
Gate display panel) is since the cabling of data line is elongated, and RC delay (RC Loading) is larger, the undercharge of sub-pixel
And the colour cast as caused by the undercharge of sub-pixel is also more obvious.
To overcome drawbacks described above, the prior art proposes a kind of overdrive technique (over driver, OD), so that liquid crystal
Reach expected deflecting object in a relatively short period of time, the principle of OD technology is: when on a data line data-signal need from
When current gray is switched to target gray scale, if only giving the driving voltage of target gray scale, since the reaction speed of liquid crystal overturning is slow,
The target gray scale of our needs can not actually be not achieved, and use OD technology, then driving corresponding with current gray can be provided
The bigger corresponding driving voltage of grayscale of overdriving of the difference of voltage, thus accelerate liquid crystal reversal rate, it is practical to reach us
Required target gray scale, solves the problems, such as colour cast.But there are still following defects for existing overdrive technique: in existing skill of overdriving
In art, when the value of the corresponding driving voltage of current gray driving voltage corresponding with target gray scale is equal, place of overdriving can be skipped
Reason and directly to the corresponding driving voltage of data line load target gray scale, but in fact, the corresponding driving voltage of current gray with
The value of the corresponding driving voltage of target gray scale is equal can not to indicate that the corresponding driving voltage of current gray is corresponding with target gray scale
Driving voltage be identical voltage because there is also the drives corresponding with target gray scale of the corresponding driving voltage of current gray
The different situation of the polarity of dynamic voltage, such as the corresponding driving voltage of current gray are positive polar 127 gray scale voltage, target ash
Rank is negative polar 127 gray scale voltage, at this point, if directly to the corresponding driving voltage of data line load target gray scale, it may appear that
It overdrives mistake, and then leads to undercharge, and colour cast occur.
Summary of the invention
The purpose of the present invention is to provide a kind of display driving methods, can improve the charging effect of sub-pixel, reduce aobvious
Show colour cast.
The object of the invention is also to provide a kind of display devices, can improve the charging effect of sub-pixel, reduce display
Colour cast.
To achieve the above object, the present invention provides a kind of display driving method, include the following steps:
Step S1, a display panel is provided, the display panel includes the multiple sub-pixels and a plurality of number of array arrangement
According to line, a data line is arranged in corresponding each column sub-pixel, is electrically connected the column sub-pixel pair positioned at the sub-pixel of same row
The data line answered；
Step S2, in a frame image time, when the data-signal on a data line needs to switch to from current gray
When target gray scale and current gray equal with target gray scale, the corresponding driving voltage of the target gray scale and current gray pair are judged
Whether the polarity for the driving voltage answered is identical；
If they are the same, then the corresponding driving voltage of the target gray scale directly is loaded to the data line, if it is different, then basis
Preset first over-driving look-up table, target gray scale and current gray search to obtain first and overdrive grayscale, and to the data
Line load described first is overdrived the corresponding driving voltage of grayscale.
The step S2 further include: in a frame image time, when the data-signal on a data line is needed from current
Grayscale switch to target gray scale and current gray and target gray scale it is not equal whens, according to preset second over-driving look-up table, target
Grayscale and current gray search corresponding second and overdrive grayscale, and overdrive grayscale pair to data line load described second
The driving voltage answered.
The multiple sub-pixel includes: the first sub-pixel, the second sub-pixel and third sub-pixel, first sub-pixel,
The color of second sub-pixel and third sub-pixel is different, and the sub-pixel positioned at same row is according to the first sub-pixel, the second sub-pixel
And the order of third sub-pixel is repeated in arrangement, the color positioned at the sub-pixel with a line is identical.
A scan line is arranged in corresponding every a line sub-pixel, is electrically connected the row sub-pixel positioned at the sub-pixel of same a line
Corresponding scan line.
First sub-pixel, the second sub-pixel and third sub-pixel are respectively red sub-pixel, green sub-pixels and indigo plant
Sub-pixels.
The present invention also provides a kind of display devices, comprising: first judgment module, to be connected with the first judgment module
Two judgment modules, first to be connected with second judgment module overdrive module, overdrive module and second with described first
Display panel determination module connected loading module and be connected with the loading module；
The display panel includes the multiple sub-pixels and multiple data lines of array arrangement, and corresponding each column sub-pixel is set
A data line is set, is electrically connected the corresponding data line of column sub-pixel positioned at the sub-pixel of same row；
The first judgment module is used in a frame image time, when the data-signal on a data line is needed from working as
When preceding grayscale switches to target gray scale, judge whether the current gray is equal with target gray scale；
Second judgment module is used to judge institute when first judgment module determines that current gray is equal with target gray scale
Whether the polarity for stating the corresponding driving voltage of target gray scale driving voltage corresponding with current gray is identical；
Described first overdrive module for the second judgment module determine the corresponding driving voltage of the target gray scale with
When the polarity difference of the corresponding driving voltage of current gray, according to preset first over-driving look-up table, target gray scale and current
Grayscale searches to obtain first and overdrives grayscale；
The loading module is used to determine the corresponding driving voltage of the target gray scale and current ash in the second judgment module
When the polarity of the corresponding driving voltage of rank is identical, the corresponding driving voltage of the target gray scale is loaded to the data line, the
When two judgment modules determine the polarity difference of the corresponding driving voltage of target gray scale driving voltage corresponding with current gray,
It overdrives the corresponding driving voltage of grayscale to data line load described first.
The display device further include: second to be connected with the first judgment module and loading module is overdrived module；
Described second overdrives module for when first judgment module determines that current gray and target gray scale be not equal, according to
Preset second over-driving look-up table, target gray scale and current gray search corresponding second and overdrive grayscale；
The loading module is also used to when first judgment module determines that current gray and target gray scale do not wait, to the number
It overdrives the corresponding driving voltage of grayscale according to line load described second.
The multiple sub-pixel includes: the first sub-pixel, the second sub-pixel and third sub-pixel, first sub-pixel,
The color of second sub-pixel and third sub-pixel is different, and the sub-pixel positioned at same row is according to the first sub-pixel, the second sub-pixel
And the order of third sub-pixel is repeated in arrangement, the color positioned at the sub-pixel with a line is identical.
A scan line is arranged in corresponding every a line sub-pixel, is electrically connected the row sub-pixel positioned at the sub-pixel of same a line
Corresponding scan line.
First sub-pixel, the second sub-pixel and third sub-pixel are respectively red sub-pixel, green sub-pixels and indigo plant
Sub-pixels.
Beneficial effects of the present invention: the present invention provides a kind of display driving method.The display driving method is included in one
In frame image time, when the data-signal on a data line needs to switch to target gray scale and current gray pair from current gray
When should be equal with target gray scale, the pole of the corresponding driving voltage of target gray scale driving voltage corresponding with current gray be judged
Whether property is identical and different in the polarity of the corresponding driving voltage of target gray scale driving voltage corresponding from current gray
When, it searches to obtain first according to preset first over-driving look-up table, target gray scale and current gray and overdrives grayscale, and to institute
It states data line load described first to overdrive the corresponding driving voltage of grayscale, can be avoided mistake in the prior art of overdriving,
Improve the charging effect of sub-pixel, reduces display colour cast.The present invention also provides a kind of display devices, can improve filling for sub-pixel
Electric effect reduces display colour cast.
Detailed description of the invention
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with of the invention detailed
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is the flow chart of display driving method of the invention；
Fig. 2 is the schematic diagram of display device of the invention；
Fig. 3 is the schematic diagram of display panel in display device of the invention.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred implementation of the invention
Example and its attached drawing are described in detail.
Referring to Fig. 1, a kind of display driving method, includes the following steps:
Step S1, a display panel 5 is provided, multiple sub-pixels 51 of the display panel 5 including array arrangement and more
A data line 52 is arranged in data line 52, corresponding each column sub-pixel 51, and the sub-pixel 51 positioned at same row is electrically connected
The corresponding data line 52 of column sub-pixel 51；
Step S2, in a frame image time, when the data-signal on a data line 52 needs to switch from current gray
When to target gray scale and current gray equal with target gray scale, the corresponding driving voltage of the target gray scale and current gray are judged
Whether the polarity of corresponding driving voltage is identical；
If they are the same, then the corresponding driving voltage of the target gray scale directly is loaded to the data line 52, if it is different, then root
It searches to obtain first according to preset first over-driving look-up table, target gray scale and current gray to overdrive grayscale, and to the number
Described first is loaded according to line 52 to overdrive the corresponding driving voltage of grayscale.
Specifically, the step S2 is specifically included: the data-signal in a frame image time, on a data line 52
When needing to switch to target gray scale from current gray, first judge whether current gray is equal with target gray scale, if differing, basis
Preset second over-driving look-up table, target gray scale and current gray search corresponding second and overdrive grayscale, and to the number
Described second is loaded according to line 52 to overdrive the corresponding driving voltage of grayscale；If equal, continue to judge that the target gray scale is corresponding
Driving voltage driving voltage corresponding with current gray polarity it is whether identical, if they are the same, then directly to the data line 52
Load the corresponding driving voltage of the target gray scale, if it is different, then according to preset first over-driving look-up table, target gray scale and
Current gray searches to obtain first and overdrives grayscale, and loads described first to the data line 52 and overdrive the corresponding drive of grayscale
Dynamic voltage.
Further, display panel of the invention is the display panel of three gate architectures, can effectively reduce data line
The pin number of quantity and source electrode driver reduces production cost, and in detail, the multiple sub-pixel 51 includes: the first sub- picture
The color of element, the second sub-pixel and third sub-pixel, first sub-pixel, the second sub-pixel and third sub-pixel is different, position
Arrangement, position are repeated according to the order of the first sub-pixel, the second sub-pixel and third sub-pixel in the sub-pixel 51 of same row
It is identical in the color of sub-pixel 51 with a line.
Certainly, in order to realize the progressive scan to sub-pixel, the display panel also corresponds to every a line sub-pixel 51 and is arranged
One scan line 53 is electrically connected the corresponding scan line 53 of row sub-pixel 51 positioned at the sub-pixel 51 of same a line.
Preferably, first sub-pixel, the second sub-pixel and third sub-pixel are respectively red sub-pixel R, green
Pixel G and blue subpixels B.
For example, in some embodiments of the invention, as shown in figure 3, the data line 52 of secondary series is for secondary series
It is 127 grayscale when the red sub-pixel R charging of the first row, i.e. current gray is 127 grayscale, and scan line 53 is continued to scan on to second
When row, the data line 52 of secondary series needs to charge for the green sub-pixels G of the second row of secondary series, and corresponding grayscale is also 127 ashes
Rank, i.e. target gray scale are that 127 grayscale continue to judge that the target gray scale is corresponding so that current gray is equal with target gray scale
Whether the polarity of driving voltage driving voltage corresponding with current gray is identical, it is found that the current gray is positive polarity voltage,
And target gray scale is reverse voltage namely the corresponding driving voltage of target gray scale driving voltage corresponding with current gray
Polarity it is different, then continue, search to obtain first according to preset first over-driving look-up table, target gray scale and current gray
Grayscale of overdriving is 150 grayscale, and loads described first to the data line 52 and overdrive the corresponding cathode of i.e. 150 grayscale of grayscale
The driving voltage of property, using first overdrive the corresponding negative polarity of i.e. 150 grayscale of grayscale driving voltage by the second row of secondary series
Green sub-pixels G charge to the driving voltage of the corresponding negative polarity of 127 grayscale.And the corresponding driving voltage of the target gray scale
When the polarity of driving voltage corresponding with current gray is identical, i.e., the described current gray and target gray scale be positive polarity voltage or
Person's current gray and target gray scale are reverse voltage, then directly load the corresponding cathode of 127 grayscale to the data line 52
The driving voltage of property.
In other EXAMPLE Examples of the invention, as shown in figure 3, the data line 52 of secondary series is for secondary series first
It is 127 grayscale when capable red sub-pixel R charges, i.e. current gray is 127 grayscale, and scan line 53 is continued to scan on to the second row
When, the data line 52 of secondary series needs to charge for the green sub-pixels G of the second row of secondary series, and corresponding grayscale is 150 grayscale, i.e.,
Target gray scale is 150 grayscale, so that current gray and target gray scale differ, then according to preset second over-driving look-up table, mesh
Mark grayscale and current gray search corresponding second and overdrive grayscale, such as 170 grayscale second are overdrived grayscale, and to described
Data line 52 loads described second and overdrives the corresponding driving voltage of i.e. 170 grayscale of grayscale, and certainly, this second is overdrived grayscale pair
The polarity for the driving voltage answered and the polarity needs of the target gray scale are consistent.
It is directly whether equal with target gray scale according to current gray to determine whether needing to carry out in compared with the prior art
It overdrives, the present invention also judges the corresponding driving voltage of the target gray scale and work as when current gray is equal with target gray scale
Whether the polarity of the corresponding driving voltage of preceding grayscale is identical, and in polarity difference, still overdrives, can be avoided existing skill
Mistake of overdriving in art improves the charging effect of sub-pixel, reduces display colour cast.
Referring to Fig. 2, the present invention also provides a kind of display devices, comprising: first judgment module 1 judges with described first
The second connected judgment module 2 of module 1, first to be connected with second judgment module 2 are overdrived module 3 and described first
Module of overdriving 3 and the second determination module 2 connected loading module 4 and the display panel that is connected with the loading module 4
5；
The display panel 5 includes the multiple sub-pixels 51 and multiple data lines 52 of array arrangement, corresponding each column
A data line 52 is arranged in pixel 51, is electrically connected the corresponding data line of column sub-pixel 51 positioned at the sub-pixel 51 of same row
52；
The first judgment module 1 is used in a frame image time, when the data-signal on a data line 52 needs
When switching to target gray scale from current gray, the drive corresponding with target gray scale of the corresponding driving voltage of the current gray is judged
Whether the value of dynamic voltage is equal；
Second judgment module 2 is used to determine the corresponding driving voltage of current gray and target in first judgment module 1
When the value of the corresponding driving voltage of grayscale is equal, judge that the corresponding driving voltage of the target gray scale is corresponding with current gray
Whether the polarity of driving voltage is identical；
Described first overdrives module 3 for determining the corresponding driving voltage of the target gray scale in the second judgment module 2
When the polarity difference of driving voltage corresponding with current gray, according to preset first over-driving look-up table, target gray scale and work as
Preceding grayscale searches to obtain first and overdrives grayscale；
The loading module 4 is used to determine the corresponding driving voltage of the target gray scale and current in the second judgment module 2
When the polarity of the corresponding driving voltage of grayscale is identical, the corresponding driving voltage of the target gray scale is loaded to the data line 52,
The polarity of the corresponding driving voltage of target gray scale driving voltage corresponding with current gray is determined not in the second judgment module 2
Meanwhile described first is loaded to the data line 52 and is overdrived the corresponding driving voltage of grayscale.
Further, the display device further include: second to be connected with the first judgment module 1 and loading module 4
Module of overdriving 6；
Described second overdrives module 6 for determining the corresponding driving voltage of current gray and mesh in first judgment module 1
Whens the value of the corresponding driving voltage of mark grayscale is not equal, according to preset second over-driving look-up table, target gray scale and current ash
Rank searches corresponding second and overdrives grayscale；
The loading module 4 is also used to determine the corresponding driving voltage of current gray and target ash in first judgment module 1
Whens the value of the corresponding driving voltage of rank is not equal, it is electric that the described second corresponding driving of grayscale of overdriving is loaded to the data line 52
Pressure.
Further, display panel of the invention is the display panel of three gate architectures, can effectively reduce data line
The pin number of quantity and source electrode driver reduces production cost, and in detail, the multiple sub-pixel 51 includes: the first sub- picture
The color of element, the second sub-pixel and third sub-pixel, first sub-pixel, the second sub-pixel and third sub-pixel is different, position
Arrangement, position are repeated according to the order of the first sub-pixel, the second sub-pixel and third sub-pixel in the sub-pixel 51 of same row
It is identical in the color of sub-pixel 51 with a line.
Certainly, in order to realize the progressive scan to sub-pixel, the display panel also corresponds to every a line sub-pixel 51 and is arranged
One scan line 53 is electrically connected the corresponding scan line 53 of row sub-pixel 51 positioned at the sub-pixel 51 of same a line.
Preferably, first sub-pixel, the second sub-pixel and third sub-pixel are respectively red sub-pixel R, green
Pixel G and blue subpixels B.
The detailed operation of display device of the invention includes: in a frame image time, when on a data line 52
Data-signal needs when switching to target gray scale from current gray, the first judgment module 1 first judges current gray and mesh
Mark grayscale it is whether equal, if differing, second overdrive module 6 according to preset second over-driving look-up table, target gray scale and
Current gray searches corresponding second and overdrives grayscale, and the loading module 4 simultaneously loads second mistake to the data line 52
Drive the corresponding driving voltage of grayscale；If equal, the second judgment module 2 continues to judge the corresponding driving electricity of the target gray scale
Press the polarity of driving voltage corresponding with current gray whether identical, if they are the same, loading module 4 is then directly to the data line 52
The corresponding driving voltage of the target gray scale is loaded, if it is different, then the first module 3 of overdriving is overdrived according to preset first and looked into
It looks for table, target gray scale and current gray to search to obtain first to overdrive grayscale, loading module 4 loads described to the data line 52
First overdrives the corresponding driving voltage of grayscale.
For example, in some embodiments of the invention, as shown in figure 3, the data line 52 of secondary series is for secondary series
It is 127 grayscale when the red sub-pixel R charging of the first row, i.e. current gray is 127 grayscale, and scan line 53 is continued to scan on to second
When row, the data line 52 of secondary series needs to charge for the green sub-pixels G of the second row of secondary series, and corresponding grayscale is also 127 ashes
Rank, i.e. target gray scale are 127 grayscale, so that first judgment module 1 judges that current gray is equal with target gray scale, second judges mould
Block 2 continues judge whether the polarity of the corresponding driving voltage of target gray scale driving voltage corresponding with current gray is identical,
It was found that the current gray is positive polarity voltage, and target gray scale is reverse voltage namely the corresponding drive of the target gray scale
The dynamic polarity of voltage driving voltage corresponding from current gray is different, then first overdrives the continuation of module 3 then according to preset the
It is 150 grayscale that one over-driving look-up table, target gray scale and current gray, which search to obtain the first grayscale of overdriving, loading module 4 to
The data line 52 loads the described first driving voltage for overdriving the corresponding negative polarity of i.e. 150 grayscale of grayscale, utilizes the first mistake
Drive the driving voltage of the corresponding negative polarity of i.e. 150 grayscale of grayscale that the green sub-pixels G of the second row of secondary series is charged to 127 ashes
The driving voltage of the corresponding negative polarity of rank.And if the second judgment module 3 determines the corresponding driving voltage of the target gray scale and works as
When the polarity of the corresponding driving voltage of preceding grayscale is identical, i.e., the described current gray and target gray scale are positive polarity voltage or work as
Preceding grayscale and target gray scale are reverse voltage, and it is corresponding that loading module 4 then directly loads 127 grayscale to the data line 52
The driving voltage of negative polarity.
In other EXAMPLE Examples of the invention, as shown in figure 3, the data line 52 of secondary series is for secondary series first
It is 127 grayscale when capable red sub-pixel R charges, i.e. current gray is 127 grayscale, and scan line 53 is continued to scan on to the second row
When, the data line 52 of secondary series needs to charge for the green sub-pixels G of the second row of secondary series, and corresponding grayscale is 150 grayscale, i.e.,
Target gray scale is 150 grayscale, so that first judgment module 1 judge that current gray and target gray scale differ, then second is overdrived mould
Block 6 searches corresponding second according to preset second over-driving look-up table, target gray scale and current gray and overdrives grayscale, such as
The second of 170 grayscale is overdrived grayscale, and loading module 4 loads described second to the data line 52 and overdrives i.e. 170 ash of grayscale
The corresponding driving voltage of rank, certainly, this second is overdrived the polarity of the corresponding driving voltage of grayscale and the pole of the target gray scale
Property need be consistent.
It is directly whether equal with target gray scale according to current gray to determine whether needing to carry out in compared with the prior art
It overdrives, the present invention also judges the corresponding driving voltage of the target gray scale and work as when current gray is equal with target gray scale
Whether the polarity of the corresponding driving voltage of preceding grayscale is identical, and in polarity difference, still overdrives, can be avoided existing skill
Mistake of overdriving in art improves the charging effect of sub-pixel, reduces display colour cast.
In conclusion the present invention provides a kind of display driving method.When the display driving method is included in a frame picture
In, when the data-signal on a data line needs to switch to from current gray, target gray scale and current gray be corresponding and target
When grayscale is equal, judge the corresponding driving voltage of target gray scale driving voltage corresponding with current gray polarity whether phase
Together, and in the polarity difference of the corresponding driving voltage of target gray scale driving voltage corresponding with current gray, according to pre-
If the first over-driving look-up table, target gray scale and current gray search to obtain first and overdrive grayscale, and to the data line
It loads described first to overdrive the corresponding driving voltage of grayscale, can be avoided mistake in the prior art of overdriving, improve sub- picture
The charging effect of element reduces display colour cast.The present invention also provides a kind of display devices, can improve the charging effect of sub-pixel,
Reduce display colour cast.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the claims in the present invention
Protection scope.
Claims (10)
1. a kind of display driving method, which comprises the steps of:
Step S1, provide a display panel (5), the display panel (5) include array arrangement multiple sub-pixels (51) and
Multiple data lines (52), a data line (52) is arranged in corresponding each column sub-pixel (51), positioned at the sub-pixel (51) of same row
It is electrically connected the corresponding data line (52) of the column sub-pixel (51)；
Step S2, in a frame image time, when the data-signal on a data line (52) needs to switch to from current gray
When target gray scale and current gray equal with target gray scale, the corresponding driving voltage of the target gray scale and current gray pair are judged
Whether the polarity for the driving voltage answered is identical；
If they are the same, then the corresponding driving voltage of the target gray scale directly is loaded to the data line (52), if it is different, then basis
Preset first over-driving look-up table, target gray scale and current gray search to obtain first and overdrive grayscale, and to the data
Line (52) load described first is overdrived the corresponding driving voltage of grayscale.
2. display driving method as described in claim 1, which is characterized in that the step S2 further include: in a frame picture
In, when the data-signal on a data line (52) needs from current gray to switch to target gray scale and current gray and target
Whens grayscale is not equal, corresponding second is searched according to preset second over-driving look-up table, target gray scale and current gray and is overdrived
Grayscale, and overdrive the corresponding driving voltage of grayscale to the data line (52) load described second.
3. display driving method as described in claim 1, which is characterized in that the multiple sub-pixel (51) includes: the first son
The color of pixel, the second sub-pixel and third sub-pixel, first sub-pixel, the second sub-pixel and third sub-pixel is different,
Sub-pixel (51) positioned at same row is repeated in row according to the order of the first sub-pixel, the second sub-pixel and third sub-pixel
Column are identical positioned at the color of sub-pixel (51) with a line.
4. display driving method as described in claim 1, which is characterized in that corresponding every a line sub-pixel (51) is arranged one and sweeps
Line (53) are retouched, are electrically connected the corresponding scan line (53) of the row sub-pixel (51) positioned at the sub-pixel (51) of same a line.
5. display driving method as claimed in claim 3, which is characterized in that first sub-pixel, the second sub-pixel and
Three sub-pixels are respectively red sub-pixel (R), green sub-pixels (G) and blue subpixels (B).
6. a kind of display device characterized by comprising first judgment module (1) is connected with the first judgment module (1)
The second judgment module (2), be connected with second judgment module (2) first overdrive module (3), with it is described first cross drive
Dynamic model block (3) and the second determination module (2) loading module (4) being connected and the display being connected with the loading module (4)
Panel (5)；
The display panel (5) includes the multiple sub-pixels (51) and multiple data lines (52) of array arrangement, corresponding each column
A data line (52) is arranged in sub-pixel (51), and it is right to be electrically connected the column sub-pixel (51) positioned at the sub-pixel (51) of same row
The data line (52) answered；
The first judgment module (1) is used in a frame image time, when the data-signal on a data line (52) needs
When switching to target gray scale from current gray, judge whether the current gray is equal with target gray scale；
Second judgment module (2) is used for the judgement when first judgment module (1) determines that current gray is equal with target gray scale
Whether the polarity of the corresponding driving voltage of target gray scale driving voltage corresponding with current gray is identical；
Described first overdrives module (3) for determining the corresponding driving voltage of the target gray scale in the second judgment module (2)
When the polarity difference of driving voltage corresponding with current gray, according to preset first over-driving look-up table, target gray scale and work as
Preceding grayscale searches to obtain first and overdrives grayscale；
The loading module (4) is in the corresponding driving voltage of the second judgment module (2) judgement target gray scale and currently
When the polarity of the corresponding driving voltage of grayscale is identical, the corresponding driving electricity of the target gray scale is loaded to the data line (52)
Pressure determines the corresponding driving voltage of target gray scale driving voltage corresponding with current gray in the second judgment module (2)
When polarity difference, overdrive the corresponding driving voltage of grayscale to the data line (52) load described first.
7. display device as claimed in claim 6, which is characterized in that further include: with the first judgment module (1) and load
What module (4) was connected second overdrives module (6)；
Described second overdrives module (6) for when first judgment module (1) determines that current gray and target gray scale be not equal, root
Corresponding second is searched according to preset second over-driving look-up table, target gray scale and current gray to overdrive grayscale；
The loading module (4) is also used to when first judgment module (1) determines that current gray and target gray scale be not equal, to described
Data line (52) load described second is overdrived the corresponding driving voltage of grayscale.
8. display device as claimed in claim 6, which is characterized in that the multiple sub-pixel (51) include: the first sub-pixel,
The color of second sub-pixel and third sub-pixel, first sub-pixel, the second sub-pixel and third sub-pixel is different, is located at same
The sub-pixel (51) of one column is repeated in arrangement according to the order of the first sub-pixel, the second sub-pixel and third sub-pixel, is located at
It is identical with the color of sub-pixel (51) of a line.
9. display device as claimed in claim 6, which is characterized in that a scan line is arranged in corresponding every a line sub-pixel (51)
(53), the corresponding scan line (53) of the row sub-pixel (51) is electrically connected positioned at the sub-pixel (51) of same a line.
10. display device as claimed in claim 8, which is characterized in that first sub-pixel, the second sub-pixel and third
Pixel is respectively red sub-pixel (R), green sub-pixels (G) and blue subpixels (B).
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