CN107564483A - Driving device and driving method of display panel and display device - Google Patents
Driving device and driving method of display panel and display device Download PDFInfo
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- CN107564483A CN107564483A CN201710819797.1A CN201710819797A CN107564483A CN 107564483 A CN107564483 A CN 107564483A CN 201710819797 A CN201710819797 A CN 201710819797A CN 107564483 A CN107564483 A CN 107564483A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000003491 array Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 40
- 239000010409 thin film Substances 0.000 description 26
- 238000013499 data model Methods 0.000 description 12
- 239000010408 film Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
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- 238000013507 mapping Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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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
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Abstract
The invention discloses a driving device and a driving method of a display panel and a display device. The driving device includes: a plurality of source driving units including a plurality of first source driving units and a plurality of second source driving units correspondingly disposed at both sides of the display region, wherein source lines connected to the first source driving units are connected to the plurality of sub-pixels on the corresponding columns and in the odd-numbered rows, and source lines connected to the second source driving units are connected to the plurality of sub-pixels on the corresponding columns and in the even-numbered rows; and a plurality of gate driving units disposed at one end of the display area, wherein the gate lines connected to the gate driving units are connected to the plurality of sub-pixels on the corresponding row. The driving device aims to solve the problem of uneven cutting of a large-size display panel in the production process.
Description
Technical field
The present invention relates to field of liquid crystal panel display, more particularly to a kind of drive device of display panel, display device and
Driving method.
Background technology
With the development of lcd technology, liquid crystal display systems develops towards large scale, high-resolution direction.
Present large-sized liquid crystal display is substantially using TFT (ThinFilmTransistor, film crystal
Pipe) liquid crystal display systems；The operation principle of TFT liquid crystal displays be each liquid crystal pixel point be by being integrated in pixel after
The thin film transistor (TFT) in face drives, and is at present most so as to accomplishing high speed, high brightness, high-contrast display screen information
One of good color liquid crystal display device, each pixel of TFT LCD is the TFT films by being integrated on itself
Transistor controls, and is active pixel point.Therefore, not only speed can be greatly improved, and contrast and brightness also carry significantly
Gao Liao, while resolution ratio has also reached high level.So TFT liquid crystal display systems is than other kinds of such as TFD
(Thin Film Diode, thin film diode) liquid crystal display systems, STN (Super Twisted Nematic) liquid crystal display system
For system, faster, picture more has a sense of hierarchy its display speed, thus TFT liquid crystal displays image quality can be more preferable, quilt
It is widely used in large-sized liquid crystal display.
4K display panels have become main flow at present, at present each high-resolution 8K of manufacturer's active development even more than 8K
Display panel, 8K display panels are the drive devices based on TFT liquid crystal display systems at present, the master of TFT LCD panel
The two class driving chips are wanted to be:Gate driver (raster data model) and source driver (source drive) this two class；source
Driver (source drive), its driving chip connect TFT source electrode, are responsible for display panel and provide the data for needing to show, will
Liquid crystal capacitance (Clc, capacitor on liquid crystal) on liquid crystal panel and storage capacitance (Cs,
Storage capacitor) it is charged to required voltage.Gate driver (raster data model), it is responsible for providing the TFT of panel
Grid unblocked level, the TFT thin film transistor (TFT)s of a line a line on liquid crystal panel are opened successively by sending out waveform, to cause
Liquid crystal capacitance Clc on liquid crystal panel and storage capacitance Cs are charged to required electricity by S/D (source driver)
Pressure, i.e., the display point of a full line is charged to show different GTGs.During 8K display panels are made, in order to mitigate
Source driver loading, by the source line source electrode lines (being also data wire/data lines) of panel from viewing area
Middle centering separates, and top half provides charging voltage by the source driver of top, and the latter half is by following source
Driver provides charging voltage.Because voltage attenuation is inconsistent on gamma voltages and source electrode line etc., relation can be led such system
Cause to produce a horizontal line in the position of line of cut, cried in industry and cut irregular (being also mura).
The content of the invention
It is a primary object of the present invention to provide a kind of drive device of display panel, driving method and display device, purport
Irregular (mura) problem of cutting can be produced solving current large size panel.
To achieve the above object, the present invention provides a kind of drive device of display panel, and the display panel includes display
Region and non-display area, wherein, the viewing area includes multiple sub-pixels arranged in arrays；Where the matrix column
Direction is direction where the both sides of the viewing area, and direction is where one end of the viewing area where the row of the matrix
Direction；
The drive device includes：
Multiple source drive units, including it is correspondingly arranged at multiple first source drive lists of the both sides of the viewing area
First and multiple second source drive units, wherein, in the source electrode line connection respective column being connected with the first source drive unit
And on multiple sub-pixels of odd-numbered line, the source electrode line connection respective column being connected with the second source drive unit and it is located at
Multiple sub-pixels of even number line；And
Multiple drive element of the grid, one end of the viewing area is arranged on, wherein, it is connected with the drive element of the grid
The corresponding row of gate line connection on multiple sub-pixels.
In one embodiment, every gate line connects and controls two adjacent row sub-pixels.
In one embodiment, each drive element of the grid is connected with 2 gate lines.
In one embodiment, the adjacent sub-pixel point-polarity of same row is in and is reversed.
In one embodiment, the adjacent sub-pixel point-polarity with a line is in be reversed.
In addition, the present invention also provides a kind of display device, the display device includes：
Display panel, and the drive device of any described display panel as described above.
In addition, the present invention also provides a kind of driving method of display panel, the both sides of the display panel are provided with multiple the
One source drive unit and multiple second source drive units, one end of the display panel are provided with multiple drive element of the grid,
The driving method includes：
The drive element of the grid will be with switch element corresponding to the i-th row sub-pixel and corresponding with i+1 row sub-pixel
Switch element open simultaneously, it is described more to cause the multiple first source drive unit to charge the i-th row sub-pixel
Individual second source drive unit charges to i+1 row sub-pixel, and the i is odd number.
The drive element of the grid will be with switch element corresponding to the i-th row sub-pixel and corresponding with i+1 row sub-pixel
Switch element simultaneously close off, opened and the i-th+2 row sub-pixel and switch element corresponding with the i-th+3 row sub-pixel with pre-.
The drive device of display panel proposed by the present invention, the drive device include multiple source drive units, including
Multiple first source drive units of the both sides of viewing area and multiple second source drive units are correspondingly arranged at, wherein, with
In the source electrode line connection respective column of first source drive unit connection and positioned at multiple sub-pixels of odd-numbered line, with described the
In the source electrode line connection respective column of two source drive units connection and positioned at multiple sub-pixels of even number line；And multiple grids
Driver element, one end of the viewing area is arranged on, wherein, it is corresponding with the gate line connection of drive element of the grid connection
Multiple sub-pixels on row.It can be avoided in large scale display panel production process by the drive device, display panel
There is the inconsistent phenomenon that decays in voltage on gamma voltages and source electrode line, and then can solve the problem that large scale display panel is generating
During the cutting mura problems that occur.
Brief description of the drawings
Fig. 1 is the drive device schematic diagram for the large scale display panel for being example；
Fig. 2 is an a kind of embodiment schematic diagram of the drive device of display panel of the present invention；
Fig. 3 is a kind of another embodiment schematic diagram of the drive device of display panel of the present invention；
Fig. 4 is a kind of another embodiment schematic diagram of the drive device of display panel of the present invention；
Fig. 5 is the schematic diagram of the mapping mode of the various opposed polarities of display panel of example；
Fig. 6 is a kind of flow signal of an embodiment of the driving method based on film transistor display panel of the present invention
Figure.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The main two classes driving chip of liquid crystal display panel is raster data model (gate driver) and source drive
(source driver) this two class；As shown in figure 1, in Fig. 1,100 represent source electrode driver, are wrapped in each source electrode driver 100
Include the source drive unit (i.e. multiple first source drive units) of multiple-channel output, its driving chip connection TFT (Thin Film
Transistor thin film transistor (TFT)s) source electrode, be responsible for display panel and provide to need the data that show, will be located on liquid crystal panel
Liquid crystal capacitance (Clc, capacitor on liquid crystal) and storage capacitance (Cs, storage capacitor) fill
Electricity arrives required voltage.Fig. 1 is single grid film transistor display panel drive device conventional at present, its driving principle
For：
Each TFT on display panel and Clc represent the point (i.e. sub-pixel) of a display with Cs electric capacity in parallel；
And a basic pixel cell pixel needs three points (sub-pixel) so shown, RGB three primary colors are represented respectively；Such as Fig. 1
Shown resolution ratio is for 7680*4320 TFT liquid crystal 8K display panels, needs 7680*4320*3 such point (sub- pictures altogether
Element) combine.
200 in Fig. 1 represent gate drivers, and each gate drivers 200 include the raster data model list of multiple-channel output
First (i.e. multiple drive element of the grid), each drive element of the grid is responsible for providing the TFT gate unblocked level of panel, by sending out ripple
Shape opens the TFT thin film transistor (TFT)s of a line a line on liquid crystal panel successively, to cause source drive to be located at liquid crystal panel
On liquid crystal capacitance Clc and storage capacitance Cs be charged to required voltage, i.e., the display point of a full line is charged with aobvious
Show different GTGs；
When lastrow shows that point (sub-pixel) is charged, drive element of the grid just closes voltage；Then next line grid
Display point (sub-pixel) of the pole driver element to next line carries out discharge and recharge, so sequentially goes down, when having substituted the bad for the good display panel most
The display point of a line afterwards, just turn one's head again from the beginning to be started to charge up again from the first row, so circulation, you can it is brilliant to complete single grid film
The imaging of body pipe display panel.
As shown in figure 1, for the TFT LCD of a 7680*4320 resolution ratio (i.e. 8K), 4320 are had altogether
Capable gate cablings (i.e. gate line gate line), source cablings (i.e. source electrode line source line) need 7680*3=altogether
23040.
Wherein, the 8k display panel horizontal directions have 7680*3=23040 row sub-pixels, can set by 60 384
The source electrode driver 100 of road output is responsible for driving, i.e., each source electrode driver 100 has 384 source drive units (can also
Referred to as with 384 source drive switches or it is referred to as with 384 source drive output channels)；Had in vertical direction
4320 row sub-pixels, the gate drivers 200 by 16 270 tunnels outputs can be set to be responsible for driving, i.e., each gate drivers
200 (can also be referred to as with 270 gate driver switch or be referred to as with 270 grid with 270 drive element of the grid
Pole drives output channel).
Each high-resolution 8K of manufacturer's active development even more than 8K display panel at present, at present 8K display panels be
Driving framework based on TFT liquid crystal display systems；Reference picture 1, centre is 8K display panels, wherein in order to mitigate source drive
The loading of (source driver), by the source line source electrode lines (being also data wire/data lines) of panel from Intermediate control
Separating (being represented in Fig. 1 with dotted line M), top half provides charging voltage by the source drive (source driver) of top,
The latter half provides charging voltage by following source drive (source driver).Such system due to gamma voltages and
The relations such as voltage attenuation is inconsistent on source electrode line can cause to produce a horizontal line in the position of line of cut, and cutting is cried in industry
Irregular (being also cutting mura).
With reference to 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
Ground describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments, ability
The every other embodiment that domain those of ordinary skill is obtained under the premise of creative work is not made, belongs to guarantor of the present invention
The scope of shield.As manufacturing technology and/or the result of tolerance, it is contemplated that illustrate the change of shape.Therefore, implementation of the invention
Example should not be construed as limited by the given shape in region shown here, but including the deviation in shape caused by such as manufacture.Cause
This, region as depicted is substantially schematical, and their shape is not intended to the accurate shape for showing region, and
It is not intended to the scope of limitation embodiment.
In the description of the invention, it is to be understood that term " vertical ", " transverse direction ", " on ", " under ", "left", "right",
" level ", " both sides ", " bottom ", " in " " interior ", etc. instruction orientation or position relationship be based on orientation shown in the drawings or position
Relation, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must have
There is specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.In description of the invention, unless otherwise indicated, " a plurality of ", " multiple "
It is meant that more than two (two) or two (two).
In addition, term " comprising " and its any deformation, it is intended that cover non-exclusive include.
The present invention proposes a kind of drive device of display panel.
Fig. 2 is a kind of configuration diagram of the first embodiment of display panel drive device of the present invention.
In the present embodiment, the display panel includes viewing area and non-display area, wherein, the viewing area includes
Multiple sub-pixels arranged in arrays；Direction where the matrix column is direction where the both sides of the viewing area, described
Direction where the row of matrix is direction where one end of the viewing area；
The drive device includes：
Multiple source drive units, including it is correspondingly arranged at multiple first source drive lists of the both sides of the viewing area
First and multiple second source drive units, wherein, in the source electrode line connection respective column being connected with the first source drive unit
And on multiple sub-pixels of odd-numbered line, the source electrode line connection respective column being connected with the second source drive unit and it is located at
Multiple sub-pixels of even number line；And
Multiple drive element of the grid, one end of the viewing area is arranged on, wherein, it is connected with the drive element of the grid
The corresponding row of gate line connection on multiple sub-pixels.
It will be appreciated that with reference to figure 2, the viewing area of the display panel has multiple sub-pixels, and one basic aobvious
Show that pixel cell pixel is formed by three sub-pixels and (needed three points so shown), represent RGB three primary colors respectively；Institute
That states display panel is shaped as rectangle；The viewing area is provided with a plurality of source electrode line source line (the level sides being arranged in juxtaposition
To), the sub-pixel on the viewing area is arranged in array, and the sub-pixel is divided into odd rows and even number line sub- picture again
Element；The both sides up and down of the display panel are parallel to oppose, and left and right ends are also that opposition is parallel；
The drive device of the display panel has multiple source drive units, including is correspondingly arranged at the display panel
The multiple first source drive units (S/D-1) and multiple second source drive units (S/D-2) of viewing area both sides, wherein,
It is and described in the source electrode line connection respective column being connected with the first source drive unit and positioned at multiple sub-pixels of odd-numbered line
In the source electrode line connection respective column of second source drive unit connection and positioned at multiple sub-pixels of even number line；
It should be noted that in the present embodiment, the drive device of the display panel is to be based on single grid film crystal
The driving framework of pipe display panel illustrates, and refer to shown in Fig. 2, using the upside of the display panel as the first side, by this
The downside of display panel is as the second side；(can certainly be using downside as the first side, upside is as the second side)；In Fig. 2, source
Polar curve n is the source electrode line of odd column, and source electrode line n+1 is the source electrode line of even column.
In the specific implementation, the upside (the first side) is provided with multiple first source drive S/D-1, each source electrode line n is from
Each source drive output channel on side is extended in the first vertical direction, and first vertical direction can be regarded as S/D-1
From upside (the first side) to the direction of downside (the second side)；Reference picture 2, every source electrode line n are connected and controlled described first vertical
A row odd rows on direction.
The downside (the second side) is provided with multiple second source drive SD-2, and each source electrode line n+1 is from downside (the second side)
Each source drive output channel extend in the second vertical direction, second vertical direction can be regarded as S/D-2 from downside
(the second side) arrives the direction of upside (the first side)；Reference picture 2, every source electrode line n+1 are connected and are controlled second vertical direction
On a row even number line sub-pixel.
Reference picture 2 understands that the source electrode line n and the source electrode line n+1 are two source electrodes adjacent in the viewing area
Line, the sub-pixel that the sub-pixel of the source electrode line n connections is connected with the source electrode line n+1 are located on same row straight line that (n is just whole
Number).
It should be noted that source electrode line n is odd column in the present embodiment Fig. 2, it is certainly in other embodiments, of the invention
The source electrode line n of drive device can also be even column；Accordingly source electrode line n+1 is even column in Fig. 2, certainly in other embodiment
Middle source electrode line n+1 can also be odd column.
The drive device of the display panel also includes multiple drive element of the grid G/D, is arranged on the viewing area
One end, wherein, with multiple sub-pixels on the corresponding row of gate line connection of raster data model connection.
It should be noted that each drive element of the grid is arranged at display panel left end in the present embodiment.
It will be appreciated that due to the corresponding unique sub-pixel of each thin film transistor (TFT), in actual production process, with institute
Multiple thin film transistor (TFT)s on the corresponding row of gate line connection of raster data model connection are stated, equivalent to what is be connected with the raster data model
Multiple sub-pixels on the corresponding row of gate line connection.
The present embodiment is respective by the source drive unit (also referred to as source drive output channel) by upper and lower both sides
The source electrode line of extraction enough controls 1 row sub-pixel jointly, compared to single grid that 1 traditional source electrode line traffic control 1 arranges all sub-pixels
For electrode film transistor display drive apparatus, the source drive Source driver of drive device of the present invention working frequency
Halve, at utmost reduce source drive Source driver power consumption, and then reduce source drive Source driver's
Temperature.Also, open corresponding gate line according to preset order, you can complete each source drive cell S on side/D-1 pairs
The sub-pixel charging of odd-numbered line, the sub-pixel charging of each source drive cell S/several rows of D-2 antithesis on opposite side, enter without
The problem of voltage attenuation is inconsistent on gamma voltages and source electrode line occurs, can solve the problem that large scale display panel was generating
The cutting mura problems occurred in journey.
Fig. 3 is a kind of configuration diagram of the second embodiment of display panel drive device of the present invention, based on above-mentioned Fig. 2 institutes
The embodiment shown, a kind of second embodiment of display panel drive device of the present invention is proposed, Fig. 3 is with based on the implementation shown in Fig. 2
Exemplified by example.
In the present embodiment, every gate line connects and controls two adjacent row sub-pixels；Two i.e. adjacent row sub-pixels are
One group of sub-pixel, each group of sub-pixel include odd rows and even number line sub-pixel；One group of sub- picture of every grid line traffic control
Element.
It will be appreciated that traditional single grid thin film transistor (TFT) display driving framework is 1 gate line gate line control
A line sub-pixel, and to be 1 gate line gate line control two row sub-pixels to the embodiment of the present invention simultaneously；
In the specific implementation, the left side of the display panel is provided with multiple drive element of the grid G/D (gate driver),
The display panel is provided with the gate line that multirow is arranged side by side；Two adjacent row sub-pixels are one group of sub-pixel, each group of sub- picture
Element includes odd rows and even number line sub-pixel, and every gate line connects and controls two adjacent row sub-pixels.
Refer to shown in Fig. 3, it is assumed that each gate line is scanned according to order from top to bottom, the 1st row sub-pixel and
2nd row sub-pixel is all controlled to be adjacent to one group of sub-pixel by corresponding 1st row gate line (G1)；Due to the display surface
The both sides of plate are provided with multiple first source drive units (S/D-1) and multiple second source drive units (S/D-2), raster data model
Signal is sent by the 1st row gate line (G1), to open corresponding with the 1st row sub-pixel thin film transistor (TFT) and the simultaneously
Thin film transistor (TFT) corresponding to 2 row sub-pixels, to cause each source drive cell S/D-1 of upside (the first side) to the 1st row picture
Element is charged, and each source drive cell S/D-2 of downside (the second side) charges to the 2nd row sub-pixel, allow well the 1st row with
And the 2nd all sub-pixel points (showing a little) of row be charged to respective required voltage；When the 1st row sub-pixel and the 2nd row
After pixel is charged, the thin film transistor (TFT) being connected with the first row gate line (G1) is closed；Then raster data model passes through the 2nd row grid
Line (G2) sends signal, to open corresponding to the corresponding thin film transistor (TFT) and the 4th row sub-pixel of the 3rd row sub-pixel simultaneously
Thin film transistor (TFT), to cause each source drive cell S/D-1 of upside (the first side) to charge the 3rd row sub-pixel, downside
Each source drive cell S/D-2 of (the second side) charges to the 4th row sub-pixel, allows all of the 3rd row and the 4th row well
Pixel cell pixel is charged to respective required voltage ... and passes through every gate line (gate according to above-mentioned driving method
Line) every group of sub-pixel is charged successively, until completing to fill to last two rows sub-pixel to last column gate line (Gn)
After electricity, you can complete the once charging to whole sub-pixels in display panel.
Further, in the present embodiment, with reference to figure 3, every gate line connects and controls two adjacent row sub-pixels, and
Each drive element of the grid G/D is connected with 2 gate lines；Above-mentioned 1st row gate line (G1) is adjacent with the 2nd row gate line (G2)
Two gate lines, gate lines G 1 and gate lines G 2 are connected to same raster data model (also referred to as raster data model output are logical
Road)；Similarly above-mentioned 3rd row gate line (G3) and the 4th row gate line (G4) are two articles of adjacent gate lines, gate lines G 3 and grid
Line G4 is connected to same raster data model output channel；The like, i.e., each drive element of the grid is connected with 2 gate lines.
It will be appreciated that traditional single grid thin film transistor (TFT) display driving framework is that a drive element of the grid only connects
One gate line gate line；And the embodiment of the present invention is two gate line gate line of a drive element of the grid connection.
The present embodiment controls two row sub-pixels simultaneously by above-mentioned connected mode, i.e. 1 gate line gate line, and
One drive element of the grid G/D (gate driver) connects two gate line gate line, enables to drive element of the grid
G/D (gate driver) quantity halves, and saves the drive element of the grid G/D (gate driver) of half.
Fig. 4 is a kind of configuration diagram of the 3rd embodiment of film transistor display panel drive device of the present invention, base
In the embodiment shown in above-mentioned Fig. 2, a kind of 3rd embodiment of film transistor display panel drive device of the present invention, figure are proposed
4 exemplified by based on the embodiment shown in Fig. 2.
In the present embodiment, the adjacent sub-pixel polarity of same row is in be reversed；Source electrode line n and institute i.e. described in Fig. 4
State source electrode line n+1 and connect the opposite sub-pixel of signal polarity respectively.
It will be appreciated that each thin film transistor (TFT) on display panel combines company with liquid crystal capacitance Clc with storage capacitance Cs
Connect, this combination connection represents a sub-pixel；Because liquid crystal capacitance Clc has polarity, therefore sub-pixel is also to have
Polarity.Specifically, can be by setting time schedule controller to provide polarity inversion signal to the source drive of display panel with right
Sub-pixel assigns polarity, and the present embodiment will not be described here.
It should be noted that because liquid crystal molecule also has a kind of characteristic, some voltage can not be exactly permanently affixed to
Constant, not so over time, even if you cancel voltage, liquid crystal molecule understands the destruction because characteristic, and can not be again in response to electricity
Change rotate, to form different GTGs.So at regular intervals, voltage must just be restored to the original state, to avoid
The characteristic of liquid crystal molecule is destroyed.But if picture is motionless always, that is to say, that picture shows same GTG always
When how this is handled, so the display voltage in liquid crystal display just divide into two kinds of polarity, one is positive polarity, and another
Individual is negative polarity.When the voltage of show electrode is higher than common electrode voltage, just referred to as positive polarity；And when the electricity of show electrode
Force down when the voltage of common electrode, just referred to as negative polarity.Either positive polarity or negative polarity, can all have one group it is identical bright
The GTG of degree；So when the pressure difference absolute value of upper and lower layer glass is fixed, the voltage of either show electrode is high, or public
High with the voltage of electrode, the GTG showed is the same.But under both of these case, the steering of liquid crystal molecule is but
Complete on the contrary, also can avoid it is above-mentioned when liquid crystal molecule turn to be permanently affixed to a direction when, caused characteristic is broken
It is bad.That is, when display picture is motionless always, we still can ceaselessly replace by positive-negative polarity, reach display
Picture is motionless, while liquid crystal molecule is not deteriorated the result of characteristic, although so LCD picture seen when you
Transfixion, the voltage of the inside is ceaselessly changed in fact, and liquid crystal molecule therein is just ceaselessly once turning toward this side,
Another time past opposite direction turns.
The reversal mode of display panel generally has four kinds, reference picture 5, is respectively：Frame inverts (Frame
Inversion), column inversion (column inversion), row reversion (Row inversion) and dot inversion (Dot
inversion)；
The conversion regime of these four, they have a common point, are changed when picture data is changed next time
Variable Polarity.For 60Hz renewal frequency, that is, every 16ms changes the polarity of a subframe.I.e. for same point,
Its polarity ceaselessly converts.And whether adjacent point possesses identical polarity, that can be as according to different dipole inversions
Mode determines.It is frame reversion (Frame inversion) first, its whole all adjacent point of picture, is all to possess phase
Same polarity.And go reversion (Row inversion) and column inversion (column inversion) then the adjacent row of each leisure and
Possess identical polarity on row.Then it is each point upper bottom left adjacent with oneself in addition in dot inversion (Dot inversion)
Right four points, are different polarity.
It will be appreciated that the source electrode line n and source electrode line n+1 is two source electrodes adjacent in the viewing area in Fig. 4
Line, the sub-pixel that the sub-pixel of the source electrode line n connections is connected with the source electrode line n+1 are located on same row straight line, work as source electrode
When line n and the source electrode line n+1 connect the opposite sub-pixel of signal polarity respectively, it is possible that row reversion (Row
Inversion) and dot inversion (Dot inversion) two kinds of polarity mapping mode；
Further, in the present embodiment, the adjacent sub-pixel polarity of same row is in and is reversed, also, same a line
Adjacent sub-pixel polarity in being reversed, i.e., reference picture 4, the source electrode line are divided into odd column source electrode line n and even column
Source electrode line n+1；Adjacent odd column source electrode line n connects the opposite sub-pixel of signal polarity respectively；Adjacent even column source electrode line n
+ 1 connects the opposite sub-pixel of signal polarity respectively.
It will be appreciated that what the first row source electrode line (odd column) in Fig. 4 connected is all positive pole sub-pixel, secondary series source
What polar curve (even column) was connected is all negative pole sub-pixel, and the sub-pixel of first row source electrode line connection is connected with secondary series source electrode line
Sub-pixel be located on same row straight line；What the 3rd row source electrode line (odd column) was connected is all negative pole sub-pixel, and the 4th arranges source
What polar curve (even column) was connected is all positive pole sub-pixel, and the sub-pixel of the 3rd row source electrode line connection is connected with the 4th row source electrode line
Sub-pixel be located on same row straight line；What the 5th row source electrode line (odd column) was connected is all positive pole sub-pixel, and the 6th arranges source
What polar curve (even column) was connected is all negative pole sub-pixel, and the sub-pixel of the 5th row source electrode line connection is connected with the 6th row source electrode line
Sub-pixel be located on same row straight line, the like, you can it is anti-using opposite polarity row by upper and lower sides source drive S/D
Turn the effect that (column inversion) type of drive reaches the reversal mode of dot inversion (Dot inversion), and
The reversal mode effect of dot inversion (Dot inversion) is more far better than the reversal mode of other display panels,
Because the reversal mode of dot inversion (Dot inversion) almost without flash of light (Flicker) phenomenon and is not susceptible to
Cross talk (Crosstalk) phenomenon.
And the phenomenon of so-called flash of light (Flicker), exactly when you are seen on the picture of liquid crystal display, you may feel that
Picture has the sensation of flicker.It is not deliberately to allow display picture one bright one to be gone out to make the visual effect of flicker, but because
For display picture GTG every time renewal picture when, have variation slightly, allow human eye to experience picture and flashing.As for string
The phenomenon of words interference (Crosstalk), what it referred to is exactly between adjacent point, and the data to be shown influences whether other side, so that
Incorrect situation is had in the picture of display；Although the phenomenon origin cause of formation of cross talk (Crosstalk) has many kinds, as long as phase
The polarity of adjoint point is different, can be to lower the generation of this phenomenon.
Based on above-mentioned drive device, the driving method embodiment of the invention based on film transistor display panel is proposed.
Reference picture 6, Fig. 6 are a kind of first embodiment of the driving method based on film transistor display panel of the present invention
Schematic flow sheet
In the present embodiment, the both sides of the display panel are provided with multiple first source drive units and multiple second source electrodes drive
Moving cell, one end of the display panel are provided with multiple drive element of the grid, and the driving method includes：
S01：The drive element of the grid will switch element corresponding with the i-th row sub-pixel and with i+1 row sub-pixel
Corresponding switch element is opened simultaneously, to cause the multiple first source drive unit to charge the i-th row sub-pixel, institute
State multiple second source drive units to charge to i+1 row sub-pixel, the i is odd number；
S02：The drive element of the grid will switch element corresponding with the i-th row sub-pixel and with i+1 row sub-pixel
Corresponding switch element simultaneously closes off, and is opened and the i-th+2 row sub-pixel and switch list corresponding with the i-th+3 row sub-pixel with pre-
Member.
It will be appreciated that well known, because a line gate line connects source terminal (this of each thin film transistor (TFT) corresponding to a line
Embodiment is thin film transistor (TFT) corresponding to a line gate line connection adjacent rows), and drive element of the grid by gate line to meeting
Signal is conveyed for corresponding thin film transistor (TFT), to control the opening and closing of thin film transistor (TFT), therefore, in the present embodiment
In, the switch element can be understood as thin film transistor (TFT).
In the specific implementation, refer to shown in Fig. 3, each gate line is swept according to order from top to bottom in the present embodiment
Retouch, the 1st row sub-pixel and the 2nd row sub-pixel are all controlled to be adjacent to one group of sub-pixel by corresponding 1st row gate lines G 1
System；Because the both sides of the display panel are provided with multiple first source drive cell S/D-1 and multiple second source drive units
S/D-2, drive element of the grid send signal by gate lines G 1, brilliant to open film corresponding to the 1st row sub-pixel simultaneously
Thin film transistor (TFT) corresponding to body pipe and the 2nd row sub-pixel, to cause each source drive cell S/D-1 pairs of upside (the first side)
1st row sub-pixel is charged, and each source drive cell S/D-2 of downside (the second side) charges to the 2nd row sub-pixel, good
All display points of the 1st row and the 2nd row are allowed to be charged to respective required voltage；When the 1st row sub-pixel and the 2nd row sub-pixel
After charged, the thin film transistor (TFT) being connected with the first row gate line (G1) is closed；Then drive element of the grid passes through the 2nd row grid
Line (G2) sends signal, to open corresponding to the corresponding thin film transistor (TFT) and the 4th row sub-pixel of the 3rd row sub-pixel simultaneously
Thin film transistor (TFT), to cause each source drive cell S/D-1 of upside (the first side) to charge the 3rd row sub-pixel, downside
Each source drive cell S/D-2 of (the second side) charges to the 4th row sub-pixel, allows the 3rd row and all of the 4th row to show well
Show that to be a little charged to respective required voltage ... right successively by every gate line (gate line) according to above-mentioned driving method
Every group of sub-pixel is charged, after completing charging to last two rows sub-pixel to last column gate line (Gn), you can complete
The once charging of whole sub-pixels in paired display panel.
The present embodiment can solve the problem that in current large size panel production process by above-mentioned driving method can produce cutting
Mura problems.
In addition, the present invention also proposes a kind of display device, the display device includes：Display panel, and appoint as described above
The drive device of the display panel of one embodiment.Wherein described display panel can be liquid crystal display panel, the display device
Can be the display devices such as computer display screen, television display screen and tablet personal computer display screen.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (8)
- A kind of 1. drive device of display panel, it is characterised in that the display panel includes viewing area and non-display area, Wherein, the viewing area includes multiple sub-pixels arranged in arrays；Direction where the matrix column is the viewing area Direction where the both sides in domain, direction where the row of the matrix are direction where one end of the viewing area；The drive device includes：Multiple source drive units, including be correspondingly arranged at the viewing area both sides multiple first source drive units and Multiple second source drive units, wherein, in the source electrode line connection respective column being connected with the first source drive unit and position In multiple sub-pixels of odd-numbered line, the source electrode line being connected with the second source drive unit connects in respective column and is located at even number Capable multiple sub-pixels；AndMultiple drive element of the grid, one end of the viewing area is arranged on, wherein, the grid being connected with the drive element of the grid Multiple sub-pixels on the corresponding row of polar curve connection.
- 2. drive device as claimed in claim 1, it is characterised in that including：Every gate line connects and controls two adjacent row sub-pixels.
- 3. drive device as claimed in claim 2, it is characterised in that including：Each drive element of the grid is connected with 2 gate lines.
- A kind of 4. drive device of display panel as claimed in claim 1, it is characterised in that including：The adjacent sub-pixel point-polarity of same row is in be reversed.
- A kind of 5. drive device of display panel as described in claim any one of 1-4, it is characterised in that including：Adjacent sub-pixel point-polarity with a line is in be reversed.
- 6. a kind of display device, it is characterised in that the display device includes：Display panel, and the drive device of the display panel as described in claim 1-5 is any.
- 7. a kind of driving method of display panel, it is characterised in that driven provided with multiple first source electrodes the both sides of the display panel Moving cell and multiple second source drive units, one end of the display panel are provided with multiple drive element of the grid, the driving Method includes：The drive element of the grid switch element corresponding with the i-th row sub-pixel and corresponding with i+1 row sub-pixel will be opened Unit is closed to open simultaneously, to cause the multiple first source drive unit to charge the i-th row sub-pixel, the multiple the Two source drive units charge to i+1 row sub-pixel, and the i is odd number.
- 8. driving method as claimed in claim 7, it is characterised in that the multiple first source drive unit is to the i-th row Pixel is charged, after the multiple second source drive unit charges to i+1 row sub-pixel, the driving method Also include：The drive element of the grid switch element corresponding with the i-th row sub-pixel and corresponding with i+1 row sub-pixel will be opened Close unit to simultaneously close off, opened and the i-th+2 row sub-pixel and switch element corresponding with the i-th+3 row sub-pixel with pre-.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710819797.1A CN107564483A (en) | 2017-09-12 | 2017-09-12 | Driving device and driving method of display panel and display device |
| PCT/CN2018/105087 WO2019052448A1 (en) | 2017-09-12 | 2018-09-11 | Driving apparatus and driving method for display panel, and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710819797.1A CN107564483A (en) | 2017-09-12 | 2017-09-12 | Driving device and driving method of display panel and display device |
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| CN107564483A true CN107564483A (en) | 2018-01-09 |
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| WO2019052448A1 (en) * | 2017-09-12 | 2019-03-21 | 惠科股份有限公司 | Driving apparatus and driving method for display panel, and display apparatus |
| CN110379382A (en) * | 2019-06-06 | 2019-10-25 | 惠科股份有限公司 | Display panel, driving method thereof and display device |
| CN111381407A (en) * | 2018-12-29 | 2020-07-07 | 北京小米移动软件有限公司 | Display panel, display device, scanning method and device |
| CN113096579A (en) * | 2021-04-06 | 2021-07-09 | 福州京东方光电科技有限公司 | Display panel, display device and driving method of display panel |
| CN114822341A (en) * | 2021-01-28 | 2022-07-29 | 奇景光电股份有限公司 | display device |
| CN115394196A (en) * | 2022-08-29 | 2022-11-25 | Tcl华星光电技术有限公司 | Display module and electronic terminal |
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Also Published As
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| WO2019052448A1 (en) | 2019-03-21 |
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Application publication date: 20180109 |