CN107301853A - The driving method of display panel, the drive device of display panel and display device - Google Patents
The driving method of display panel, the drive device of display panel and display device Download PDFInfo
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- CN107301853A CN107301853A CN201710738357.3A CN201710738357A CN107301853A CN 107301853 A CN107301853 A CN 107301853A CN 201710738357 A CN201710738357 A CN 201710738357A CN 107301853 A CN107301853 A CN 107301853A
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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
- G09G3/3622—Control of matrices with row and column drivers using a passive matrix
- G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals
- G09G3/364—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals with use of subpixels
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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
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of driving method of display panel, display panel includes multiple pixel groups, and the pixel groups include the pixel cell of two arranged adjacents in the first direction；The pixel cell includes the sub-pixel of arranged adjacent in the first direction；The driving method of the display panel includes：Opposite polarity driving voltage is applied to two pixel cells in the same pixel groups；Opposite polarity driving voltage is applied to pixel cell described in adjacent two；Polarity identical driving voltage is applied to the sub-pixel in the same pixel cell；Apply the driving voltage of different voltage class respectively to the sub-pixel in pixel cell described in adjacent two.The invention also discloses a kind of drive device of display panel and display device.The present invention can improve the display effect of display panel.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of driving method of display panel, the driving of display panel
Device and display device.
Background technology
In display panel, sub-pixel is driven in the presence of scan line and data wire, the change control of driving voltage
The change of sub-pixel gray scale, with display image.However, when the driving voltage polarity of multiple sub-pixels is identical, being easily caused aobvious
Show that panel polarizes, common electric voltage shifts, and the positive and negative amplitude of driving voltage is asymmetric with respect to common electric voltage, and produce flicker
(flicker) phenomenon, makes the display effect of display panel be deteriorated.
The content of the invention
It is a primary object of the present invention to provide a kind of driving method of display panel, it is intended to solve above-mentioned display panel and dodge
Bright technical problem, improves the display effect of display panel.
To achieve the above object, the present invention provides a kind of driving method of display panel, and display panel includes multiple pixels
Group, the pixel groups include the pixel cell of two arranged adjacents in the first direction；The pixel cell is included in the first direction
The sub-pixel of arranged adjacent；
The driving method of the display panel includes：
Opposite polarity driving voltage is applied to two pixel cells in the same pixel groups；
Opposite polarity driving voltage is applied to pixel cell described in adjacent two；
Polarity identical driving voltage is applied to the sub-pixel in the same pixel cell；
Apply the driving voltage of different voltage class respectively to the sub-pixel in pixel cell described in adjacent two.
Alternatively, opposite polarity driving electricity is applied in two pixel cells in the same pixel groups
Before the step of pressure, the driving method of the display panel is further comprising the steps of：
Grayscale voltage is calculated according to the half-tone information of picture signal；
Offset voltage is calculated according to spacing color mixed principle；
The grayscale voltage and the offset voltage is added to calculate the driving voltage.
Alternatively, the polar cycle sex reversal of the driving voltage.
The present invention also proposes a kind of drive device of display panel, and display panel includes multiple pixel groups, the pixel groups
Include the pixel cell of two arranged adjacents in the first direction；The pixel cell includes the sub- picture of arranged adjacent in the first direction
Element；
The drive device of the display panel includes control module, and the control module is used for：
Opposite polarity driving voltage is applied to two pixel cells in the same pixel groups；
Opposite polarity driving voltage is applied to pixel cell described in adjacent two；
Polarity identical driving voltage is applied to the sub-pixel in the same pixel cell；
Apply the driving voltage of different voltage class respectively to the sub-pixel in pixel cell described in adjacent two.
Alternatively, the drive device of the display panel includes signal generation module, and the signal generation module includes：
Grayscale voltage computing unit, to calculate grayscale voltage according to the half-tone information of picture signal；
Offset voltage computing unit, to calculate offset voltage according to spacing color mixed principle；
Driving voltage generation unit, it is electric to calculate the driving to be added the grayscale voltage and the offset voltage
Pressure.
Alternatively, polar cycle sex reversal of the control module to control the driving voltage.
Present invention further propose that a kind of display device, including：
Display panel, the display panel includes multiple pixel groups, scan line and data wire, and the pixel groups include two
The pixel cell of arranged adjacent in the first direction；The pixel cell includes the sub-pixel of arranged adjacent in the first direction；It is a plurality of
The scan line extends in a second direction, first direction arrangement；The a plurality of data wire is extended in a first direction, second direction row
Row；The multiple sub-pixels for being arranged in same a line are connected with scan line described in same, the institute of the adjacent pixel cell
Sub-pixel is stated to be connected with the adjacent data wire respectively；
The drive device of display panel, the drive device of the display panel includes control module, and the control module is used
In：
Opposite polarity driving voltage is applied to two pixel cells in the same pixel groups；
Opposite polarity driving voltage is applied to pixel cell described in adjacent two；
Polarity identical driving voltage is applied to the sub-pixel in the same pixel cell；
Apply the driving voltage of different voltage class respectively to the sub-pixel in pixel cell described in adjacent two.
Alternatively, the sub-pixel includes：
Pixel electrode；
Driving transistor, the driving transistor includes source electrode, drain electrode and gate electrode, the source electrode and the number
Electrically connected according to line, the drain electrode is electrically connected with the pixel electrode, the gate electrode is electrically connected with the scan line.
Alternatively, the display panel also includes：
Common wire；
Multiple storage capacitances, the storage capacitance and the sub-pixel, which are corresponded, to be set, and the storage capacitance includes the
One electrode, second electrode and capacitor dielectric layer, the first electrode are electrically connected with the pixel electrode of the corresponding sub-pixel
Connect, the second electrode is electrically connected with the common wire；The capacitor dielectric layer is located at the first electrode and the described second electricity
Between pole.
Alternatively, a pixel cell includes three sub-pixels, and three sub-pixels are respectively red pieces picture
Plain, green sub-pixel and blue sub-pixel.
In technical solution of the present invention, display panel includes multiple pixel groups, and the pixel groups include two in the first direction
The pixel cell of arranged adjacent；The pixel cell includes the sub-pixel of arranged adjacent in the first direction；The display panel
Driving method includes：Opposite polarity driving voltage is applied to two pixel cells in the same pixel groups；To phase
Pixel cell applies opposite polarity driving voltage described in neighbour two；Pole is applied to the sub-pixel in the same pixel cell
Property identical driving voltage；Apply the driving of different voltage class respectively to the sub-pixel in pixel cell described in adjacent two
Voltage.In the course of work of display panel, being switched on and off for line traffic control sub-pixel, when sub-pixel is opened, data are scanned
Line charges to sub-pixel, to control the yawing moment of liquid crystal, and then controls the display gray scale of sub-pixel.Alternatively, pixel cell
In sub-pixel show different primary colours respectively, in the presence of spacing color mixed, pixel cell shows corresponding with picture signal
Color.When on display panel in array arrange pixel cell each it is corresponding to picture signal show when, that is, realize complete graph
The display of picture.The sub-pixel of same pixel cell is connected with same data line, and scan line connections different from one respectively, by
It is less than data wire cost in scan line cost, this setup advantageously reduces the production cost of display panel.Adjacent two picture
The sub-pixel of plain unit different from one data wire connections respectively, in the course of work of display panel, by opposite polarity
Driving voltage controls adjacent two pixel cell, makes the driving voltage opposite polarity of adjacent two pixel cell of synchronization, can be achieved
Following technique effect：Firstth, the polarity effect of display panel is reduced, the skew of common electric voltage is reduced so that driving electricity
The positive and negative amplitude of pressure is symmetrical with respect to common electric voltage, it is to avoid the generation of scintillation；Second, in the display panel framework of the present invention
Under, the driving voltage opposite polarity of the adjacent two pixel cells sub-pixel of any instant, so as to reduce data wire polarity at any time
Between invert required frequency, making the overall load of display panel reduces；3rd, the sub-pixel in same pixel cell is connected to
Same data line, makes the opposite polarity of driving voltage in units of pixel cell, reduces the working frequency of display panel；The
Four, low working frequency is lower to the circuit requirement of display panel compared to senior engineer's working frequency, is keeping the constant situation of display effect
Under, it can effectively reduce the manufacturing cost of display panel；And under same process conditions, more preferable display effect can be achieved；The
Five, low working frequency reduces the signal between multi-strip scanning line on display panel, a plurality of data lines and other circuit structures
Interference so that the display reliability of display panel is higher.In summary, technical solution of the present invention improves the display of display panel
Effect.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of display device one of the present invention；
Fig. 2 is the display panel structure schematic diagram of display device in Fig. 1；
Fig. 3 is the pixel groups structural representation of display panel in Fig. 2；
Fig. 4 is the schematic flow sheet of the embodiment of driving method one of display panel of the present invention；
Fig. 5 is the partial scan voltage and part driving voltage schematic diagram of the driving method of display panel in Fig. 4.
Wherein, it is pixel groups shown in dotted line frame in Fig. 2, shown in dotted line frame is pixel cell in Fig. 3.
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
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 present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
If it is to be appreciated that related in the embodiment of the present invention directionality indicate (such as up, down, left, right, before and after ...),
Then directionality indicate to be only used for explain relative position relation under a certain particular pose (as shown in drawings) between each part,
Motion conditions etc., if the particular pose changes, directionality indicates also correspondingly therewith to change.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, being somebody's turn to do " first ", " second " etc.
Description be only used for describing purpose, and it is not intended that indicating or implying its relative importance or implicit indicate indicated skill
The quantity of art feature.Thus, " first " is defined, at least one spy can be expressed or be implicitly included to the feature of " second "
Levy.In addition, the technical scheme between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
Based on enough realizations, when the combination appearance of technical scheme is conflicting or can not realize it will be understood that the knot of this technical scheme
Conjunction is not present, also not within the protection domain of application claims.
The present invention proposes a kind of display device.
In embodiments of the present invention, as shown in Figure 1 to Figure 3, the display device includes display panel 10 and display panel
Drive device 20, the display panel 10 includes multiple pixel groups 300, scan line 100 and data wire 200, and pixel groups 300 include two
The pixel cell 310 of individual arranged adjacent in the first direction；Pixel cell includes the sub-pixel 311 of arranged adjacent in the first direction；
Multi-strip scanning line 100 extends in a second direction, first direction arrangement；A plurality of data lines 200 is extended in a first direction, second direction
Arrangement；The multiple sub-pixels 311 for being arranged in same a line are connected with same scan line 100, the sub- picture of adjacent pixel cell 310
Element 311 is connected with adjacent data wire 200 respectively.
Specifically, in the course of work of display panel, being controlled by the sub-pixel 311 to each pixel cell 310
System, realizes the display of image.Wherein, scan line 100 controls being switched on and off for sub-pixel 311, when scanning voltage controls to scan
When line 100 is opened, all sub-pixels 311 electrically connected with the scan line 100 are opened, now driving voltage control data line 200
Voltage be driving voltage, the discharge and recharge in the case where each self-corresponding data wire 200 is acted on respectively of the sub-pixels 311 of multiple unlatchings makes
The corresponding angle of liquid crystal deflection is so as to realize the display of different gray scales.
One pixel cell 310 at least includes two sub-pixels 311, generally, and a pixel cell 310 includes three or three
Sub-pixel 311 more than individual, to realize the display of coloured image.In the pixel cell 310 including three sub-pixels 311, often
A kind of primary colours of the individual correspondence of sub-pixel 311 display, so that pixel cell 310 shows color corresponding with image；And including three
In the pixel cell 310 of individual above sub-pixel 311, except red sub-pixels 311a corresponding with red, green, blue three primary colours difference, green
Sub-pixel 311b, blue sub-pixel 311c, in addition to a white sub-pixel or special sub-pixel, to balance the display of coloured light, correct aobvious
Show the color offset phenomenon of panel.
The sub-pixel 311 of same pixel cell 310 is connected with same data line 200, and scanning different from one respectively
Line 100 is connected.As shown in Figures 2 and 3, by taking the pixel cell 310 including three sub-pixels 311 as an example, the three of pixel cell 310
Individual sub-pixel 311 is connected with same data line 200, and is connected respectively with scan line 100, is connected to three sub-pixels 311
Three scan lines 100 it is different.In display panel, because the cost of scan line 100 is less than the cost of data wire 200, this framework
The quantity of data wire 200 is advantageously reduced, so as to reduce the cost of display panel.
Further, the data wire 200 different from one is connected the sub-pixel 311 of adjacent two pixel cell 310 respectively, aobvious
Show during the driving of panel, adjacent two pixel cell 310 is controlled by opposite polarity driving voltage, makes the picture of synchronization two
The driving voltage opposite polarity of the plain sub-pixel 311 of unit 310, can be achieved following technique effect：Firstth, display surface is reduced
The polarity effect of plate, reduces the skew of common electric voltage so that the positive and negative amplitude of driving voltage is symmetrical with respect to common electric voltage, it is to avoid
The generation of scintillation；Second, under the display panel framework of the present invention, the adjacent two pixel cells sub-pixel of any instant
Driving voltage opposite polarity, so as to reduce data wire polarity with the frequency needed for time reversal, make the entirety of display panel
Load reduction；3rd, the sub-pixel in same pixel cell is connected to same data line, drive is made in units of pixel cell
The opposite polarity of dynamic voltage, reduces the working frequency of display panel；4th, low working frequency is compared to senior engineer's working frequency to display
The circuit requirement of panel is lower, in the case where keeping display effect constant, can effectively reduce the manufacturing cost of display panel；And
Under same process conditions, more preferable display effect can be achieved；5th, low working frequency reduces a plurality of on display panel sweep
Retouch the signal interference between line, a plurality of data lines and other circuit structures so that the display reliability of display panel is higher.It is comprehensive
On, technical solution of the present invention improves the display effect of display panel.
In one embodiment of this invention, as shown in Figures 2 and 3, sub-pixel 311 includes pixel electrode and driving crystal
Pipe (not shown)；Driving transistor includes source electrode, drain electrode and gate electrode, and source electrode is electrically connected with data wire 200, leaks
Electrode is electrically connected with pixel electrode, and gate electrode is electrically connected with scan line 100.Wherein, pixel electrode is by transparent conductive material,
Such as indium tin oxide (ITO) is made, with normal display image.Scanning voltage controls the gate electrode voltage of driving transistor, and then
Control being switched on and off for driving transistor.When scanning voltage control driving transistor is opened, data wire 200 is brilliant by driving
The drain electrode of body pipe is charged to pixel electrode so that electric field is produced between the common electrode of pixel electrode and another substrate, is controlled
Liquid crystal deflection processed, and then control the display gray scale of the sub-pixel 311.
In the present embodiment, a pixel cell 310 includes three sub-pixels 311, and three sub-pixels 311 are respectively red pieces
Pixel 311a, green sub-pixel 311b and blue sub-pixel 311c, wherein, the generation of color can be by being correspondingly arranged with pixel electrode
Colour filter realize, by controlling red sub-pixels 311a, green sub-pixel 311b and blue sub-pixel 311c display gray scale, profit respectively
Spacing color mixed principle is used, multicolour can be produced.
Further, display panel also includes common wire and multiple storage capacitances, due to the liquid crystal filled between two substrates
It is difficult to the stability for keeping deflecting electric field, the yawing moment in order to maintain liquid crystal often sets a storage again to next two field picture
Electric capacity, storage capacitance and sub-pixel 311, which are corresponded, to be set, and is arranged on the substrate where pixel electrode.Storage capacitance
Including first electrode, second electrode and capacitor dielectric layer, the pixel electrode of first electrode and corresponding sub-pixel 311 is electrically connected
Connect, second electrode is electrically connected with common wire, capacitor dielectric layer is located between first electrode and second electrode, to maintain electric-field intensity
Stabilization, keep liquid crystal deflection angle.
In the present embodiment, as shown in Figures 2 and 3, multi-strip scanning line 100 extends in a second direction, first direction is arranged；
A plurality of data lines 200 is extended in a first direction, second direction arrangement；The multiple rectangular array shape of sub-pixel 311 arrangements, same picture
The sub-pixel 311 of plain unit 310 is arranged in the first direction；It is arranged in multiple sub-pixels 311 and same scan line of same a line
100 connections, the sub-pixel 311 of adjacent pixel cell 310 is connected with adjacent data wire 200 respectively.Above-mentioned architectural configurations are clear
It is clear, and in order to isolate insulating barrier set by different conductor and in order to connect the wire jumper negligible amounts set by different conductor,
Not only technique is simple, is easy to safeguard, and reduces the probability of circuit malfunctions, while the interference between reducing signal.
Further, sub-pixel 311 and scan line 100 are spaced, and sub-pixel 311 and data wire 200 are spaced.By
It is the AC signal changed with the time in the scanning voltage of scan line 100 and the driving voltage of data wire 200, particularly exists
In the present embodiment, because the sub-pixel 311 of same pixel cell 310 is connected to same data line 200, and in conventional architectures
In, the sub-pixel of same pixel cell is connected respectively to a different data wire, compared to conventional architectures, scan line in the present invention
100 scan frequency is higher, in order to reduce the coupling between high-frequency signal, it is to avoid produce interference, son to the image of display panel
Pixel 311 and scan line 100 are spaced, and sub-pixel 311 and data wire 200 are spaced, to improve display effect.
The present invention also proposes a kind of drive device of display panel, and the concrete structure of the display panel is with reference to above-mentioned implementation
Example.The drive device of display panel includes control module, and control module is used for：
Opposite polarity driving voltage is applied to two pixel cells in same pixel groups；
Opposite polarity driving voltage is applied to adjacent two pixel cell；
Polarity identical driving voltage is applied to the sub-pixel in same pixel cell；
Apply the driving voltage of different voltage class respectively to the sub-pixel in adjacent two pixel cell.
The drive device of display panel also includes signal generation module.
During the driving of display panel, first, signal generation module generates scanning voltage and drive according to picture signal
Dynamic voltage, to cause the correct display image of display panel.During display, generally using progressive scan or interleaved side
Formula, wherein, the display resolution of progressive scan is more preferable, and interleaved scan frequency is relatively low.In the present embodiment, to sweep line by line
Retouch and be illustrated exemplified by mode.Fig. 5 is shown n-th to n+5 horizontal scanning line G (n) in Fig. 2, G (n+1), G (n+2), G (n+3), G
(n+4), the schematic diagram that G (n+5) scanning voltage is changed over time, and in Fig. 2 the n-th column data line S (n) driving voltage with
The schematic diagram of time change.Illustrated so that the driving transistor of sub-pixel is N-type transistor as an example, if driving transistor is P
Transistor npn npn, then correspond to the polarity of each signal of reversion.
On a same row, the gate electrode of all driving transistors is connected to same scan line 100, when control module control
When the scanning voltage of scan line 100 processed is increased to setting high voltage, all driving transistors are in opening on the row, this
When, a plurality of data lines 200 is charged to the pixel electrode of sub-pixel 311 on the row respectively by driving transistor, now, data
The voltage of line 200 is driving voltage corresponding with gradation of image information.In charging process, pixel electrode is total to another substrate
Deflecting electric field is formed between electrode, liquid crystal deflection set angle is controlled, to show corresponding gray scale.After charging complete, mould is controlled
The scanning voltage of block control scan line 100 drops to setting low-voltage, make it that all driving transistors are turned off on the row, and sub
The voltage of pixel electrode is kept, and liquid crystal continues to keep deflection state with display image, until recharge next time.
Control module control scan line is opened line by line, 200 pairs of data wire is charged line by line to sub-pixel 311, is worked as display surface
The sub-pixel of all rows is electrically charged on plate finish after, add the effect that human eye vision is persisted, user it can be seen that complete image.
After the display of this two field picture is finished, the drive device of display panel repeats the above steps to realize the display of next two field picture, from
And realize the display of dynamic image.
Scanning voltage and driving voltage are generated according to picture signal, are connected with the sub-pixel 311 of adjacent pixel unit 310
The driving voltage opposite polarity of the data wire 200 connect, that is, adjacent two pixel electrode on synchronization, display panel
Opposite polarity, to weaken the overall polarization of display panel, reduces the skew of common electric voltage, makes the positive and negative amplitude of driving voltage relative
Common electric voltage is symmetrical, so as to avoid the generation of scintillation.Electricity on the power consumption P of data wire drive integrated circult, data wire
Hold and meet relation P=CfV between C, voltage discharge and recharge frequency f and the voltage range V of discharge and recharge2/2.As shown in figure 5, to connect
To the data wire S (n) and S (n+1) of adjacent two pixel cell 310, in synchronization, data wire S (n) and S (n+1) pole
Property on the contrary, and on same data line 200, the frequency of driving voltage polarity reversal is greatly reduced, and the entirety of display panel
Load is proportional to frequency, so that the overall load reduction of display panel.Further, by the sub-pixel in same pixel cell
311 are connected to same data line 200, and the opposite polarity of driving voltage is made in units of pixel cell 310, display surface is reduced
The working frequency of plate.Also, low working frequency is lower to the circuit requirement of display panel compared to senior engineer's working frequency, display is being kept
In the case that effect is constant, the manufacturing cost of display panel can be effectively reduced, and under same process conditions, be can be achieved more preferable
Display effect；Meanwhile, low working frequency reduces multi-strip scanning line 100 on display panel, a plurality of data lines 200 and other
Signal interference between circuit structure so that the display reliability of display panel is higher, so as to improve the display of display panel
Effect.
Further, signal generation module includes：
Grayscale voltage computing unit, the grayscale voltage to calculate data wire according to the half-tone information of picture signal；
Offset voltage computing unit, the offset voltage to calculate data wire according to spacing color mixed principle；
Driving voltage generation unit, to be added grayscale voltage and offset voltage to calculate the driving voltage of data wire, and
Generate driving voltage；
Wherein, it is identical with the offset voltage polarity for two data wires that the sub-pixel of adjacent two pixel cell is connected.
Specifically, during the display of display panel, because color of image is same or like, when multiple adjacent subpixels
Liquid crystal deflection direction it is identical when, mirror-reflection will be produced, causes colour cast whiting, particularly in big visual angle display panel
In, because the color lump area of same or like color is larger, above-mentioned phenomenon is even more serious.In order to correct colour cast whiting, in display
In panel, by making the direction initialization of the relatively current display gray scale in the liquid crystal deflection direction of adjacent subpixels have the inclined of different angles
Turn, further according to spacing color mixed principle, correct color and show, so that there is difference in the liquid crystal deflection direction of adjacent subpixels,
Diffusing reflection is formed, to correct colour cast whiting.However, in the case where being controlled to the yawing moment of adjacent subpixels, display
The signal switching frequency increase of panel, overall load increase.In the present embodiment, the deflection in units of pixel cell to liquid crystal
Direction is adjusted, and the sub-pixel in same pixel cell is connected to same data line, the offset voltage of adjacent pixel unit
Polarity is identical, after being added with grayscale voltage, and equivalent to the absolute value of driving voltage, versus grayscale absolute value of voltage has just respectively
Skew and negative offset, correct color error ratio so as to realize in the presence of spacing color mixed, are cut while reducing display panel signal
The frequency changed, reduces overall load.
Further, in the present embodiment, polar cycle sex reversal of the control module to control driving voltage, not only in sky
Between on reduce the overall polarization of display panel, dot inversion effect is further realized in time, it is to avoid the drive of each sub-pixel
Dynamic voltage makes the display of display panel be influenceed by direct current blocking effect and direct current residual in same polarity for a long time, improves
The display effect of display panel.
The present invention also propose a kind of driving method of display panel, to drive display panel, the display panel it is specific
Structure is with reference to above-described embodiment.As shown in Figure 2 and Figure 4, the driving method of display panel comprises the following steps：
Step S100：Opposite polarity driving voltage is applied to two pixel cells in same pixel groups；
Step S200：Opposite polarity driving voltage is applied to adjacent two pixel cell；
Step S300：Polarity identical driving voltage is applied to the sub-pixel in same pixel cell；
Step S400：Apply the driving voltage of different voltage class respectively to the sub-pixel in adjacent two pixel cell.
Before step S100, the driving method of display panel also includes：
Step S500：Grayscale voltage is calculated according to the half-tone information of picture signal；
Step S600：Offset voltage is calculated according to spacing color mixed principle；
Step S700：Grayscale voltage and offset voltage are added with computing driving voltage.
During the driving of display panel, scanning voltage and driving voltage are generated according to picture signal first, to cause
The correct display image of display panel.During display, generally using progressive scan or interleaved mode, wherein, line by line
The display resolution of scanning is more preferable, and interleaved scan frequency is relatively low.In the present embodiment, by taking progressive scan mode as an example,
Displaying panel driving method is illustrated.Fig. 5 is shown n-th to n+5 horizontal scanning line G (n) in Fig. 2, G (n+1), G (n+2), G
(n+3), the schematic diagram that G (n+4), G (n+5) scanning voltage are changed over time, and in Fig. 2 the n-th column data line S (n) drive
The schematic diagram that dynamic voltage is changed over time.Illustrated so that the driving transistor of sub-pixel is N-type transistor as an example, if driving is brilliant
Body pipe is P-type transistor, then corresponds to the polarity of each signal of reversion.
On a same row, the gate electrode of all driving transistors is connected to same scan line 100, when scan line 100
Scanning voltage when being increased to setting high voltage, all driving transistors are in opening, now, many datas on the row
Line 200 is charged to the pixel electrode of sub-pixel 311 on the row respectively by driving transistor, now, the voltage of data wire 200
For driving voltage corresponding with gradation of image information.In charging process, shape between the common electrode of pixel electrode and another substrate
Into deflecting electric field, liquid crystal deflection set angle is controlled, to show corresponding gray scale.After charging complete, the scanning electricity of scan line 100
Setting low-voltage is down in pressure, and make it that all driving transistors are turned off on the row, and the voltage of pixel electrode is kept, liquid crystal
Continue to keep deflection state with display image, until recharge next time.
Scan line is opened line by line, 200 pairs of data wire is charged line by line to sub-pixel 311, when all rows on display panel
Sub-pixel is electrically charged finish after, add the effect that human eye vision is persisted, user it can be seen that complete image.It is aobvious in this two field picture
Show after finishing, repeat the above steps to realize the display of next two field picture, so as to realize the display of dynamic image.
Scanning voltage and driving voltage are generated according to picture signal, are connected with the sub-pixel 311 of adjacent pixel unit 310
The driving voltage opposite polarity of the data wire 200 connect, that is, adjacent two pixel electrode on synchronization, display panel
Opposite polarity, to weaken the overall polarization of display panel, reduces the skew of common electric voltage, makes the positive and negative amplitude of driving voltage relative
Common electric voltage is symmetrical, so as to avoid the generation of scintillation.As shown in figure 5, the number to be connected to adjacent two pixel cell 310
Exemplified by line S (n) and S (n+1), in synchronization, data wire S (n) and S (n+1) opposite polarity, and in same data line
On 200, the frequency of driving voltage polarity reversal is greatly reduced, and the overall load of display panel is proportional to frequency, so that aobvious
Show the overall load reduction of panel.Further, the sub-pixel 311 in same pixel cell is connected to same data line
200, the opposite polarity of driving voltage is made in units of pixel cell 310, the working frequency of display panel is reduced.Also, it is low
Working frequency is lower to the circuit requirement of display panel compared to senior engineer's working frequency, can in the case where keeping display effect constant
The manufacturing cost of display panel is effectively reduced, and under same process conditions, more preferable display effect can be achieved；Meanwhile, it is low
Working frequency reduces the signal between multi-strip scanning line 100 on display panel, a plurality of data lines 200 and other circuit structures
Interference so that the display reliability of display panel is higher, so as to improve the display effect of display panel.
During the display of display panel, because color of image is same or like, when the liquid crystal of multiple adjacent subpixels
When yawing moment is identical, mirror-reflection will be produced, cause colour cast whiting, particularly in big visual angle display panel, due to
The color lump area of same or like color is larger, and above-mentioned phenomenon is even more serious.In order to correct colour cast whiting, in display panel,
By making the direction initialization of the relatively current display gray scale in the liquid crystal deflection direction of adjacent subpixels have the deflection of different angles, then root
According to spacing color mixed principle, correct color and show, so that the liquid crystal deflection direction of adjacent subpixels has difference, form unrestrained anti-
Penetrate, to correct colour cast whiting.However, in the case where being controlled to the yawing moment of adjacent subpixels, the letter of display panel
The increase of number switching frequency, overall load increase.In the present embodiment, the yawing moment of liquid crystal is carried out in units of pixel cell
Sub-pixel in adjustment, same pixel cell is connected to same data line, and the offset voltage polarity of adjacent pixel unit is identical,
After being added with grayscale voltage, equivalent to the absolute value of driving voltage, versus grayscale absolute value of voltage has positive offset and negative bias respectively
Move, color error ratio is corrected in the presence of spacing color mixed so as to realize, while the frequency of display panel signal switching is reduced, drop
Low overall load.
Further, in the present embodiment, the polar cycle sex reversal of driving voltage not only spatially reduces display surface
The overall polarization of plate, further realizes dot inversion effect in time, it is to avoid the driving voltage of each sub-pixel is in for a long time
Same polarity and the display of display panel is influenceed by direct current blocking effect and direct current residual, improve the display effect of display panel
Really.
The alternative embodiment of the present invention is the foregoing is only, is not intended to limit the scope of the invention, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical fields in the scope of patent protection of the present invention.
Claims (10)
1. a kind of driving method of display panel, it is characterised in that display panel includes multiple pixel groups, the pixel groups include
The pixel cell of two arranged adjacents in the first direction；The pixel cell includes the sub-pixel of arranged adjacent in the first direction；
The driving method of the display panel includes：
Opposite polarity driving voltage is applied to two pixel cells in the same pixel groups；
Opposite polarity driving voltage is applied to pixel cell described in adjacent two；
Polarity identical driving voltage is applied to the sub-pixel in the same pixel cell；
Apply the driving voltage of different voltage class respectively to the sub-pixel in pixel cell described in adjacent two.
2. the driving method of display panel as claimed in claim 1, it is characterised in that described in the same pixel groups
Two pixel cells the step of apply opposite polarity driving voltage before, the driving method of the display panel is also wrapped
Include following steps：
Grayscale voltage is calculated according to the half-tone information of picture signal；
Offset voltage is calculated according to spacing color mixed principle；
The grayscale voltage and the offset voltage is added to calculate the driving voltage.
3. the driving method of display panel as claimed in claim 1, it is characterised in that the polar cycle of the driving voltage
Reversion.
4. a kind of drive device of display panel, it is characterised in that display panel includes multiple pixel groups, the pixel groups include
The pixel cell of two arranged adjacents in the first direction；The pixel cell includes the sub-pixel of arranged adjacent in the first direction；
The drive device of the display panel includes control module, and the control module is used for：
Opposite polarity driving voltage is applied to two pixel cells in the same pixel groups；
Opposite polarity driving voltage is applied to pixel cell described in adjacent two；
Polarity identical driving voltage is applied to the sub-pixel in the same pixel cell；
Apply the driving voltage of different voltage class respectively to the sub-pixel in pixel cell described in adjacent two.
5. the drive device of display panel as claimed in claim 4, it is characterised in that the drive device bag of the display panel
Signal generation module is included, the signal generation module includes：
Grayscale voltage computing unit, to calculate grayscale voltage according to the half-tone information of picture signal；
Offset voltage computing unit, to calculate offset voltage according to spacing color mixed principle；
Driving voltage generation unit, to be added the grayscale voltage and the offset voltage to calculate the driving voltage.
6. the drive device of display panel as claimed in claim 4, it is characterised in that the control module is described to control
The polar cycle sex reversal of driving voltage.
7. a kind of display device, it is characterised in that including：
Display panel, the display panel includes multiple pixel groups, scan line and data wire, and the pixel groups include two along the
The pixel cell of one direction arranged adjacent；The pixel cell includes the sub-pixel of arranged adjacent in the first direction；It is a plurality of described
Scan line extends in a second direction, first direction arrangement；The a plurality of data wire is extended in a first direction, second direction arrangement；
The multiple sub-pixels for being arranged in same a line are connected with scan line described in same, the son of the adjacent pixel cell
Pixel is connected with the adjacent data wire respectively；
The drive device of display panel as any one of claim 4 to 6.
8. display device as claimed in claim 7, it is characterised in that the sub-pixel includes：
Pixel electrode；
Driving transistor, the driving transistor includes source electrode, drain electrode and gate electrode, the source electrode and the data wire
Electrical connection, the drain electrode is electrically connected with the pixel electrode, and the gate electrode is electrically connected with the scan line.
9. display device as claimed in claim 8, it is characterised in that the display panel also includes：
Common wire；
Multiple storage capacitances, the storage capacitance is corresponded with the sub-pixel and set, and the storage capacitance includes the first electricity
Pole, second electrode and capacitor dielectric layer, the first electrode are electrically connected with the pixel electrode of the corresponding sub-pixel, institute
Second electrode is stated to electrically connect with the common wire；Capacitor dielectric layer located at the first electrode and the second electrode it
Between.
10. display device as claimed in claim 7 a, it is characterised in that pixel cell includes three sub- pictures
Element, three sub-pixels are respectively red sub-pixels, green sub-pixel and blue sub-pixel.
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| CN201710738357.3A CN107301853A (en) | 2017-08-24 | 2017-08-24 | The driving method of display panel, the drive device of display panel and display device |
| PCT/CN2018/095066 WO2019037554A1 (en) | 2017-08-24 | 2018-07-10 | Method for driving display panel, driving apparatus of display panel, and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710738357.3A CN107301853A (en) | 2017-08-24 | 2017-08-24 | The driving method of display panel, the drive device of display panel and display device |
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| CN107301853A true CN107301853A (en) | 2017-10-27 |
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| WO (1) | WO2019037554A1 (en) |
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