CN107422558A - Liquid crystal panel and its driving method - Google Patents
Liquid crystal panel and its driving method Download PDFInfo
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- CN107422558A CN107422558A CN201710734264.3A CN201710734264A CN107422558A CN 107422558 A CN107422558 A CN 107422558A CN 201710734264 A CN201710734264 A CN 201710734264A CN 107422558 A CN107422558 A CN 107422558A
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- pixel
- voltage
- film transistor
- scan line
- liquid crystal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
-
- 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
- G09G3/3614—Control of polarity reversal in general
-
- 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
Abstract
The invention provides a kind of liquid crystal panel, is specifically：In every row pixel, the grid of the first film transistor of all first pixels is connected to corresponding first scan line, and the grid of the second thin film transistor (TFT) of all second pixels is connected to corresponding second scan line；In each column pixel, the drain electrode (or source electrode) of the first film transistor of all first pixels is connected to corresponding first data wire, and the drain electrode (or source electrode) of the second thin film transistor (TFT) of all second pixels is connected to corresponding second data wire；The grid voltage transmitted by adjusting the first scan line and/or the second scan line, so that the source grid voltage (or drain-gate pole tension) of first film transistor and the source grid voltage (or drain-gate pole tension) of the second thin film transistor (TFT) are identical.Present invention also offers a kind of driving method of liquid crystal panel.When liquid crystal panel is shown, make the leakage current of all thin film transistor (TFT)s identical, so as to cause to show anomaly.
Description
Technical field
The invention belongs to technical field of liquid crystal display, specifically, is related to a kind of liquid crystal panel and its driving method.
Background technology
With the evolution of photoelectricity and semiconductor technology, the fluffy of flat-panel monitor (Flat Panel Display) has also been driven
The exhibition of breaking out, and in many flat-panel monitors, liquid crystal display (Liquid Crystal Display, abbreviation LCD) is because having
Many advantageous characteristics such as high spatial utilization ratio, low consumpting power, radiationless and low EMI, it has also become the master in market
Stream.
Liquid crystal display generally includes liquid crystal panel (Liquid Crystal Panel) and backlight module (Black
Light Module, abbreviation BL).Because liquid crystal panel does not have self luminous characteristic in itself, it is therefore necessary to by backlight module
Configuration is below liquid crystal panel, and to provide the uniform face light needed for liquid crystal panel, such liquid crystal panel can be by backlight mould
Block provide face light and show image.
Liquid crystal panel includes multiple pixels, multi-strip scanning line and a plurality of data lines, and each pixel includes thin film transistor (TFT)
(TFT) and pixel electrode, the grid (gate) of thin film transistor (TFT) are connected to horizontally extending scan line, thin film transistor (TFT)
Drain electrode (drain) be connected to extension data line vertically, the source electrode (source) of thin film transistor (TFT) is connected to pixel
Electrode.
The mode that the driving of liquid crystal panel is typically employed to polarity inversion is driven, such as dot inversion (Dot
) and column inversion (Column Inversion) etc. Inversion.
When liquid crystal panel is driven in a manner of polarity inversion and shows a certain picture, data wire passes through thin film transistor (TFT)
The high voltage duration and low-voltage duration for being supplied to the data voltage of pixel electrode respectively account for half.Continue in high voltage
In time, the source electrode of thin film transistor (TFT) and the voltage range of drain electrode are usually 7~14V, and scan line is supplied to thin film transistor (TFT)
The low-voltage of grid is usually -5V, and now the source grid voltage Vgs+ of thin film transistor (TFT) voltage range is 12~19V；And
In the low-voltage duration, the source electrode of thin film transistor (TFT) and the voltage range of drain electrode are usually 0~7V, and scan line is supplied to film
The low-voltage of the grid of transistor be usually -5V, now the source grid voltage Vgs- of thin film transistor (TFT) voltage range be 5~
12V.Thus, it is possible to find out, for the thin film transistor (TFT) in the high voltage duration and in the low-voltage duration, its source grid
Voltage Vgs+, Vgs- voltage range differ, and this will cause the leakage current I of thin film transistor (TFT)offDiffer, so as to drive
Cause to show anomaly because thin film transistor (TFT) is supplied to the virtual voltage of pixel electrode different during dynamic display picture.
The content of the invention
In order to solve the above-mentioned problems of the prior art, shown it is an object of the invention to provide one kind in liquid crystal panel
In the time of one frame picture, source grid voltage all the identical liquid crystal panel and its driving method, liquid crystal of all thin film transistor (TFT)s
Display.
According to an aspect of the present invention, there is provided a kind of liquid crystal panel, the liquid crystal panel include multiple pixels, a plurality of the
Scan line, a plurality of second scan line, a plurality of first data wire and a plurality of second data wire, the multiple pel array row
Cloth, the pixel include thin film transistor (TFT) and the pixel electrode being connected with the source electrode of the thin film transistor (TFT)；In every row pixel
In, the grid of the first film transistor of all first pixels is connected to corresponding first scan line, all second pictures
The grid of second thin film transistor (TFT) of element is connected to corresponding second scan line；In each column pixel, all first pictures
The drain electrode of the first film transistor of element is connected to corresponding first data wire, and the second film of all second pixels is brilliant
The drain electrode of body pipe is connected to corresponding second data wire；Wherein, the first pixel electrode of first pixel and described
The opposite polarity of the pixel voltage of second pixel electrode of the second pixel；In a frame picture is shown, by adjusting described first
Scan line and/or the grid voltage of the second scan line transmission, so that the source grid voltage of the first film transistor and described
The source grid voltage of second thin film transistor (TFT) is identical.
Further, in a frame picture is shown, when connecting the first data wire of first pixel to first picture
Element provides high data voltage, and during so that first pixel electrode having the pixel voltage of positive polarity, adjustment draws high described first
Low-voltage in the grid voltage of scan line transmission；And/or when connecting the second data wire of second pixel to described second
Pixel provides low data voltage, and during so that second pixel electrode having the pixel voltage of negative polarity, adjustment drags down described the
Low-voltage in the grid voltage of two scan lines transmission.
Further, in every row pixel, first pixel and second pixel are alternately arranged, in each column pixel
In, it is first pixel or is second pixel；Or in every row pixel, first pixel and described
Two pixels are alternately arranged；In each column pixel, first pixel and second pixel are alternately arranged；In first pixel
The adjacent pixel in lower left and right is second pixel.
According to another aspect of the present invention, a kind of driving method of liquid crystal panel is additionally provided, the driving method includes：
In a frame picture is shown, the grid voltage of the first scan line and/or the second scan line transmission is adjusted, so that described first
The source grid voltage of thin film transistor (TFT) is identical with the source grid voltage of second thin film transistor (TFT)；Wherein, the liquid crystal panel
Often row pixel in all first pixels first film transistor grid be connected to corresponding to first scan line, institute
State the second thin film transistor (TFT) of all second pixels in the often row pixel of liquid crystal panel grid be connected to corresponding to one article the
Two scan lines, in each column pixel of the liquid crystal panel drain electrode of the first film transistor of all first pixels be connected to pair
First data wire answered, the drain electrode of the second thin film transistor (TFT) of all second pixels in each column pixel of the liquid crystal panel
Second picture of second data wire corresponding to being connected to, the first pixel electrode of first pixel and second pixel
The opposite polarity of the pixel voltage of plain electrode.
Further, the method for described " adjustment first scan line and/or the grid voltage of the second scan line transmission "
Including：In a frame picture is shown, when the first data wire for connecting first pixel provides high data to first pixel
During voltage, the low-voltage in the grid voltage of the first scan line transmission is drawn high in adjustment；And/or when connection second pixel
The second data wire to second pixel low data voltage is provided when, adjustment drags down the grid electricity of second scan line transmission
Low-voltage in pressure.
According to another aspect of the invention, a kind of liquid crystal panel is provided again, the liquid crystal panel includes multiple pixels, more
The scan line of bar first, a plurality of second scan line, a plurality of first data wire and a plurality of second data wire, the multiple pel array
Arrangement, the pixel include thin film transistor (TFT) and the pixel electrode with the drain electrode connection of the thin film transistor (TFT)；In every row picture
In element, the grid of the first film transistor of all first pixels be connected to corresponding to first scan line, all second
The grid of second thin film transistor (TFT) of pixel is connected to corresponding second scan line；In each column pixel, all first
The source electrode of the first film transistor of pixel is connected to corresponding first data wire, the second film of all second pixels
The source electrode of transistor is connected to corresponding second data wire；Wherein, the first pixel electrode of first pixel and institute
State the opposite polarity of the pixel voltage of the second pixel electrode of the second pixel；In a frame picture is shown, by adjusting described
Scan line and/or the grid voltage of the second scan line transmission, so that the drain-gate pole tension of the first film transistor and institute
The drain-gate pole tension for stating the second thin film transistor (TFT) is identical.
Further, in a frame picture is shown, when connecting the first data wire of first pixel to first picture
Element provides high data voltage, and during so that first pixel electrode having the pixel voltage of positive polarity, adjustment draws high described first
Low-voltage in the grid voltage of scan line transmission；And/or when connecting the second data wire of second pixel to described second
Pixel provides low data voltage, and during so that second pixel electrode having the pixel voltage of negative polarity, adjustment drags down described the
Low-voltage in the grid voltage of two scan lines transmission.
Further, in every row pixel, first pixel and second pixel are alternately arranged, in each column pixel
In, it is first pixel or is second pixel；Or in every row pixel, first pixel and described
Two pixels are alternately arranged；In each column pixel, first pixel and second pixel are alternately arranged；In first pixel
The adjacent pixel in lower left and right is second pixel.
According to another aspect of the invention, a kind of driving method of liquid crystal panel is provided again, and the driving method includes：
In a frame picture is shown, the grid voltage of the first scan line and/or the second scan line transmission is adjusted, so that described first
The drain-gate pole tension of thin film transistor (TFT) is identical with the drain-gate pole tension of second thin film transistor (TFT)；Wherein, the liquid crystal panel
Often row pixel in all first pixels first film transistor grid be connected to corresponding to first scan line, institute
State the second thin film transistor (TFT) of all second pixels in the often row pixel of liquid crystal panel grid be connected to corresponding to one article the
Two scan lines, the source electrode of the first film transistor of all first pixels is connected to pair in each column pixel of the liquid crystal panel
First data wire answered, the source electrode of the second thin film transistor (TFT) of all second pixels in each column pixel of the liquid crystal panel
Second picture of second data wire corresponding to being connected to, the first pixel electrode of first pixel and second pixel
The opposite polarity of the pixel voltage of plain electrode.
Further, the method for described " adjustment first scan line and/or the grid voltage of the second scan line transmission "
Including：In a frame picture is shown, when the first data wire for connecting first pixel provides high data to first pixel
During voltage, the low-voltage in the grid voltage of the first scan line transmission is drawn high in adjustment；And/or when connection second pixel
The second data wire to second pixel low data voltage is provided when, adjustment drags down the grid electricity of second scan line transmission
Low-voltage in pressure.
According to another aspect of the invention, a kind of liquid crystal display is provided again, and it includes backlight module and above-mentioned liquid
Crystal panel, the backlight module and the liquid crystal panel are oppositely arranged, and the backlight module, which provides, shows light to the liquid crystal
Panel.
Beneficial effects of the present invention：Within the time that liquid crystal panel shows a frame picture, make all thin in liquid crystal panel
The leakage current of film transistor is identical, so as to which when driving display picture, each thin film transistor (TFT) is supplied to corresponding pixel electrode
Pixel voltage is all identical, enters without causing to show anomaly.
Brief description of the drawings
The following description carried out in conjunction with the accompanying drawings, above and other aspect, feature and the advantage of embodiments of the invention
It will become clearer, in accompanying drawing：
Fig. 1 is the structural representation of liquid crystal panel according to an embodiment of the invention；
Fig. 2 is the waveform of the grid voltage for the grid that scan line according to an embodiment of the invention sends thin film transistor (TFT) to
Figure；
Fig. 3 is the grid voltage for the grid that scan line according to another embodiment of the present invention sends thin film transistor (TFT) to
Oscillogram；
Fig. 4 is the grid voltage for the grid that scan line according to still another embodiment of the invention sends thin film transistor (TFT) to
Oscillogram；
Fig. 5 is the structure chart of liquid crystal display according to an embodiment of the invention.
Embodiment
Hereinafter, with reference to the accompanying drawings to embodiments of the invention are described in detail.However, it is possible to come in many different forms real
Apply the present invention, and the specific embodiment of the invention that should not be construed as limited to illustrate here.Conversely, there is provided these implementations
Example is in order to explain the principle and its practical application of the present invention, so that others skilled in the art are it will be appreciated that the present invention
Various embodiments and be suitable for the various modifications of specific intended application.
In the accompanying drawings, identical label will be used to indicate identical element all the time.It will be appreciated that although herein may be used
Various elements are described using term " first ", " second " etc., but these elements should not be limited by these terms.These arts
Language is only used for making a distinction an element with another element.
Fig. 1 is the structural representation of liquid crystal panel according to an embodiment of the invention.
Reference picture 1, liquid crystal panel according to an embodiment of the invention include：Substrate 100, form on the substrate 100 more
Individual pixel, a plurality of first scan line 210, a plurality of second scan line 220, a plurality of first data wire 310 and a plurality of second data
Line 320.It should be noted that liquid crystal panel according to an embodiment of the invention can also include the connection He of the first scan line 210
The scanner driver (not shown) of second scan line 220, the data drive for connecting the first data wire 310 and the second data wire 320
Dynamic device (not shown) and time schedule controller (not shown) of control scanner driver and data driver etc..
It should be noted that in the present embodiment, the polarity according to the pixel voltage of storage of same time is different, by pixel
It is divided into the first pixel and the second pixel.The polarity for the pixel voltage that first pixel stores with the second pixel in the same time is different,
In Fig. 1, the first pixel is represented with " P+ ", the second pixel is represented with " P- ", wherein, P+ represents the picture of now the first pixel storage
Plain voltage is positive polarity pixel voltage, and P- represents that the pixel voltage of now the second pixel storage is positive polarity pixel voltage, but this
Invention is not restricted to this.In addition, the liquid crystal panel that the same time here represents shows a frame picture duration, but this
Invention is not restricted to this.
What deserves to be explained is the pixel voltage mentioned by this case refers to the voltage by data wire loading on the pixel electrode
The voltage difference after common electric voltage is subtracted, when the pixel voltage of the first pixel storage is positive polarity pixel voltage, then the first pixel
The voltage loaded on middle pixel electrode subtracts the voltage difference after common electric voltage as just, that is to say, that in the first pixel on pixel electrode
The voltage of loading is more than common electric voltage；And when the pixel voltage of the first pixel storage is negative polarity pixel voltage, then the first picture
It is negative that the voltage loaded in element on pixel electrode, which subtracts the voltage difference after common electric voltage, now, in the first pixel on pixel electrode
The voltage of loading is less than common electric voltage.
Pixel includes thin film transistor (TFT) and the pixel electrode being connected with the source electrode of thin film transistor (TFT).In the present embodiment,
First pixel includes first film transistor T1 and be connected with first film transistor T1 source S (or drain D) first
Pixel electrode LC1, the second pixel include the second thin film transistor (TFT) T2 and with (or the drain electrode of the second thin film transistor (TFT) T2 source S
D) the second pixel electrode LC2 of connection, but the present invention is not restricted to this.
In the present embodiment, in every row pixel, including the first pixel and the second pixel, but the present invention is not restricted to
This.
In the present embodiment, multiple pel array arrangements.Every first scan line 210 and every second scan line 220 are equal
Along line direction (i.e. horizontal direction) extend, and every first data wire 310 and every second data wire 320 along column direction (i.e.
Vertical direction) extension.In every row pixel, the first film transistor T1 of all first pixels grid G is connected to correspondingly
First scan line 210, the second thin film transistor (TFT) T2 of all second pixels grid G be connected to corresponding to one article the
Two scan lines 220；And in each column pixel, the first film transistor T1 of all first pixels drain D (or source S) connects
First data wire 310 corresponding to being connected to, the second thin film transistor (TFT) T2 of all second pixels drain D (or source S) are equal
Second data wire 320 corresponding to being connected to.
In the present embodiment, liquid crystal panel according to an embodiment of the invention is driven in a manner of the polarity inversion of column inversion
Dynamic display, in this case, for every row pixel, is alternately arranged with the first pixel and the second pixel, and is directed to each column pixel,
It is same pixel, that is, is the first pixel or is the second pixel, but the present invention is not restricted to this.
As another embodiment of the present invention, liquid crystal panel according to an embodiment of the invention is anti-with the polarity of dot inversion
The mode of turning is driven display, in this case, for every row pixel, is alternately arranged with the first pixel and the second pixel, and
For each column pixel, be also alternately arranged with the first pixel and the second pixel, and the first pixel it is adjacent up and down pixel it is equal
For the second pixel, the second pixel pixel adjacent up and down is the first pixel, but the present invention is not restricted to this.
In liquid crystal panel according to an embodiment of the invention shows a frame picture, by the scan line 210 of adjustment first and/
Or second grid voltage that transmits of scan line 220, so that (or drain-gate is extremely electric by first film transistor T1 source grid voltage Vgs1
Press Vgd1) and the second thin film transistor (TFT) T2 source grid voltage Vgs2 (or drain-gate pole tension Vgd2) it is identical.So, due to first
Thin film transistor (TFT) T1 source grid voltage Vgs1 (or drain-gate pole tension Vgd1) and the second thin film transistor (TFT) T2 source grid voltage
Vgs2 (or drain-gate pole tension Vgd2) is identical, therefore can cause thin film transistor (TFT) all in liquid crystal panel (including all
One thin film transistor (TFT) T1 and the second all thin film transistor (TFT) T2) leakage current IoffIt is identical, so as to when driving display picture
Each thin film transistor (TFT) is supplied to the virtual voltage of corresponding pixel electrode all identical, enters without causing to show anomaly.
Below to showing a frame picture in liquid crystal panel according to an embodiment of the invention in, how to adjust the first scan line
210 and/or second scan line 220 transmit grid voltage be described in detail.
Fig. 2 is the waveform of the grid voltage for the grid that scan line according to an embodiment of the invention sends thin film transistor (TFT) to
Figure.
Referring to Figures 1 and 2, left figure is the grid voltage VG1 of the first scan line 210 transmission oscillogram, and right figure is second
The oscillogram for the grid voltage VG2 that scan line 220 transmits.Within the time that liquid crystal panel shows a frame picture, when connection first
First data wire 310 of pixel provides high data electricity to the first film transistor T1 of the first pixel drain D (or source S)
Pressure, so that the first pixel electrode LC1 of the first pixel has the pixel voltage of positive polarity, (it subtracts public equal to high data voltage
Voltage Vcom) when, the low-voltage L in the grid voltage of the first scan line 210 transmission is drawn high in adjustment；And when the second pixel of connection
Second data wire 320 provides low data voltage to the second thin film transistor (TFT) T2 of the second pixel drain D (or source S), so that
Second pixel electrode LC2 of the second pixel has the pixel voltage of negative polarity, and (it subtracts common electric voltage equal to low data voltage
When Vcom), the low-voltage L in the grid voltage of the second scan line 220 transmission is not changed.
In this way, within the high data voltage duration, such as the voltage of first film transistor T1 source S and drain D
Scope is 7~14V, and the first scan line 210 is supplied to the low-voltage of first film transistor T1 grid G to be driven high for 2V, this
When first film transistor T1 source grid voltage Vgs1 (or drain-gate pole tension Vgd1) voltage range be 5~12V.In low number
According in voltage-duration, such as the voltage range of the second thin film transistor (TFT) T2 source S and drain D is 0~7V, the second scanning
Line 220 is supplied to the source grid that the low-voltage of the second thin film transistor (TFT) T2 grid G is also -5V, now the second thin film transistor (TFT) T2
Pole tension Vgs2 (or drain-gate pole tension Vgd2) voltage range is 5~12V.So, it can make first film transistor T1's
Source grid voltage Vgs1 and the second thin film transistor (TFT) T2 source grid voltage Vgs2 (or drain-gate pole tension Vgd2) is identical.
Fig. 3 is the grid voltage for the grid that scan line according to another embodiment of the present invention sends thin film transistor (TFT) to
Oscillogram.
Reference picture 1 and Fig. 3, left figure are the grid voltage VG1 of the first scan line 210 transmission oscillograms, and right figure is second
The oscillogram for the grid voltage VG2 that scan line 220 transmits.Within the time that liquid crystal panel shows a frame picture, when connection first
First data wire 310 of pixel provides high data voltage to the first film transistor T1 of the first pixel drain D, so that first
First pixel electrode LC1 of pixel has the pixel voltage of positive polarity (it subtracts common electric voltage Vcom equal to high data voltage)
When, do not change the low-voltage L in the grid voltage of the first scan line 210 transmission；And when the second data wire of the second pixel of connection
320 provide low data voltage to the second thin film transistor (TFT) T2 of the second pixel drain D, so that the second pixel electricity of the second pixel
When pole LC2 has pixel voltage (it subtracts common electric voltage Vcom equal to low data voltage) of negative polarity, adjustment drags down second and swept
Retouch the low-voltage L in the grid voltage of the transmission of line 220.
In this way, within the high data voltage duration, such as the voltage of first film transistor T1 source S and drain D
Scope is 7~14V, and it is also -5V that the first scan line 210, which is supplied to the low-voltage of first film transistor T1 grid G, now
One thin film transistor (TFT) T1 source grid voltage Vgs1 (or drain-gate pole tension Vgd1) voltage range is 12~19V.In low data
In voltage-duration, such as the voltage range of the second thin film transistor (TFT) T2 source S and drain D is 0~7V, the second scan line
220 are supplied to the low-voltage of the second thin film transistor (TFT) T2 grid G to be pulled low as -12V, now the second thin film transistor (TFT) T2 source
Grid voltage Vgs2 (or drain-gate pole tension Vgd2) voltage range is 12~19V.So, first film transistor T1 can be made
Source grid voltage Vgs1 (or drain-gate pole tension Vgd1) and the second thin film transistor (TFT) T2 source grid voltage Vgs2 (or drain-gate poles
Voltage Vgd2) it is identical.
Fig. 4 is the grid voltage for the grid that scan line according to still another embodiment of the invention sends thin film transistor (TFT) to
Oscillogram.
Reference picture 1 and Fig. 4, left figure are the grid voltage VG1 of the first scan line 210 transmission oscillograms, and right figure is second
The oscillogram for the grid voltage VG2 that scan line 220 transmits.Within the time that liquid crystal panel shows a frame picture, when connection first
First data wire 310 of pixel provides high data electricity to the first film transistor T1 of the first pixel drain D (or source S)
Pressure, so that the first pixel electrode LC1 of the first pixel has the pixel voltage of positive polarity, (it subtracts public equal to high data voltage
Voltage Vcom) when, the low-voltage L in the grid voltage of the first scan line 210 transmission is drawn high in adjustment；And when the second pixel of connection
The drain D (or source S) of from the second data wire 320 to the second thin film transistor (TFT) T2 of the second pixel low data voltage is provided, with
Make the second pixel electrode LC2 of the second pixel there is the pixel voltage of negative polarity (it subtracts common electric voltage equal to low data voltage
When Vcom), adjustment drags down the low-voltage L in the grid voltage of the second scan line 220 transmission.
In this way, within the high data voltage duration, such as the voltage of first film transistor T1 source S and drain D
Scope is 7~14V, and the first scan line 210 is supplied to the low-voltage of first film transistor T1 grid G to draw high for -2V, now
First film transistor T1 source grid voltage Vgs1 (or drain-gate pole tension Vgd1) voltage range is 9~16V.In low data
In voltage-duration, such as the voltage range of the second thin film transistor (TFT) T2 source S and drain D is 0~7V, the second scan line
220 are supplied to the low-voltage of the second thin film transistor (TFT) T2 grid G to be pulled low as -9V, now the second thin film transistor (TFT) T2 source
Grid voltage Vgs2 (or drain-gate pole tension Vgd2) voltage range is 9~16V.So, first film transistor T1 can be made
Source grid voltage Vgs1 and the second thin film transistor (TFT) T2 source grid voltage Vgs2 (or drain-gate pole tension Vgd2) it is identical.
Furthermore, it is necessary to explanation, in the various embodiments of the invention, the source electrode of each thin film transistor (TFT) and drain electrode can be mutual
To change, that is to say, that the source electrode of each thin film transistor (TFT) and the connected mode of drain electrode can exchange, so after exchange, source grid
Voltage is changed to drain-gate pole tension, but the present invention is not restricted to this.
Fig. 5 is the structure chart of liquid crystal display according to an embodiment of the invention.
Reference picture 5, liquid crystal display according to an embodiment of the invention generally include liquid crystal panel 1000 and backlight module
2000, wherein, liquid crystal panel 1000 is the liquid crystal panel shown in Fig. 1.Backlight module 2000 is configured under liquid crystal panel 1000
Side, to provide the uniform face light needed for liquid crystal panel 1000, such liquid crystal panel 1000 can carry by backlight module 2000
The face light of confession and show image.
In summary, according to an embodiment of the invention, within the time that liquid crystal panel shows a frame picture, liquid crystal panel is made
In all thin film transistor (TFT) leakage current it is identical, so as to when drive display picture each thin film transistor (TFT) be supplied to it is corresponding
The pixel voltage of pixel electrode is all identical, enters without causing to show anomaly.
Although the present invention has shown and described with reference to specific embodiment, it should be appreciated by those skilled in the art that：
In the case where not departing from the spirit and scope of the present invention limited by claim and its equivalent, can carry out herein form and
Various change in details.
Claims (10)
1. a kind of liquid crystal panel, it is characterised in that the liquid crystal panel includes multiple pixels, a plurality of first scan line, a plurality of the
Two scan lines, a plurality of first data wire and a plurality of second data wire, the multiple pel array arrangement, the pixel includes thin
Film transistor and the pixel electrode being connected with the source electrode of the thin film transistor (TFT)；
In every row pixel, the grid of the first film transistor of all first pixels is connected to corresponding one first scanning
Line, the grid of the second thin film transistor (TFT) of all second pixels are connected to corresponding second scan line；
In each column pixel, the drain electrode of the first film transistor of all first pixels is connected to corresponding first data
Line, the drain electrode of the second thin film transistor (TFT) of all second pixels are connected to corresponding second data wire；Wherein, described
The opposite polarity of the pixel voltage of first pixel electrode of one pixel and the second pixel electrode of second pixel；
In a frame picture is shown, by adjusting the grid voltage of the first scan line and/or the second scan line transmission, so that
The source grid voltage of the first film transistor is identical with the source grid voltage of second thin film transistor (TFT).
2. liquid crystal panel according to claim 1, it is characterised in that in a frame picture is shown, when connection described first
First data wire of pixel provides high data voltage to first pixel, so that first pixel electrode has positive polarity
During pixel voltage, the low-voltage in the grid voltage of the first scan line transmission is drawn high in adjustment；And/or when connection described second
Second data wire of pixel provides low data voltage to second pixel, so that second pixel electrode has negative polarity
During pixel voltage, adjustment drags down the low-voltage in the grid voltage of the second scan line transmission.
3. liquid crystal panel according to claim 1 or 2, it is characterised in that in every row pixel, first pixel and institute
State the second pixel to be alternately arranged, in each column pixel, be first pixel or be second pixel；Or every
In row pixel, first pixel and second pixel are alternately arranged；In each column pixel, first pixel and described
Two pixels are alternately arranged；First pixel pixel adjacent up and down is second pixel.
4. a kind of driving method of liquid crystal panel, it is characterised in that the driving method includes：In a frame picture is shown, adjust
The grid voltage of whole first scan line and/or the second scan line transmission, so that the source grid of the first film transistor
Voltage is identical with the source grid voltage of second thin film transistor (TFT)；
Wherein, the grid of the first film transistor of all first pixels is connected to pair in the often row pixel of the liquid crystal panel
First scan line answered, the grid of the second thin film transistor (TFT) of all second pixels in the often row pixel of the liquid crystal panel
Second scan line corresponding to being connected to, the first film of all first pixels is brilliant in each column pixel of the liquid crystal panel
The drain electrode of body pipe is connected to corresponding first data wire, all second pixels in each column pixel of the liquid crystal panel
The drain electrode of second thin film transistor (TFT) is connected to corresponding second data wire, the first pixel electrode of first pixel and
The opposite polarity of the pixel voltage of second pixel electrode of second pixel.
5. driving method according to claim 4, it is characterised in that " adjustment first scan line and/or second
The method of the grid voltage of scan line transmission " includes：In a frame picture is shown, when the first data for connecting first pixel
When line is to first pixel offer high data voltage, the low electricity in the grid voltage of the first scan line transmission is drawn high in adjustment
Pressure；And/or when the second data wire for connecting second pixel provides low data voltage to second pixel, adjustment drags down
Low-voltage in the grid voltage of the second scan line transmission.
6. a kind of liquid crystal panel, it is characterised in that the liquid crystal panel includes multiple pixels, a plurality of first scan line, a plurality of the
Two scan lines, a plurality of first data wire and a plurality of second data wire, the multiple pel array arrangement, the pixel includes thin
Film transistor and the pixel electrode with the drain electrode connection of the thin film transistor (TFT)；
In every row pixel, the grid of the first film transistor of all first pixels is connected to corresponding one first scanning
Line, the grid of the second thin film transistor (TFT) of all second pixels are connected to corresponding second scan line；
In each column pixel, the source electrode of the first film transistor of all first pixels is connected to corresponding first data
Line, the source electrode of the second thin film transistor (TFT) of all second pixels are connected to corresponding second data wire；Wherein, described
The opposite polarity of the pixel voltage of first pixel electrode of one pixel and the second pixel electrode of second pixel；
In a frame picture is shown, by adjusting the grid voltage of the first scan line and/or the second scan line transmission, so that
The drain-gate pole tension of the first film transistor is identical with the drain-gate pole tension of second thin film transistor (TFT).
7. liquid crystal panel according to claim 6, it is characterised in that in a frame picture is shown, when connection described first
First data wire of pixel provides high data voltage to first pixel, so that first pixel electrode has positive polarity
During pixel voltage, the low-voltage in the grid voltage of the first scan line transmission is drawn high in adjustment；And/or when connection described second
Second data wire of pixel provides low data voltage to second pixel, so that second pixel electrode has negative polarity
During pixel voltage, adjustment drags down the low-voltage in the grid voltage of the second scan line transmission.
8. the liquid crystal panel according to claim 6 or 7, it is characterised in that in every row pixel, first pixel and institute
State the second pixel to be alternately arranged, in each column pixel, be first pixel or be second pixel；Or every
In row pixel, first pixel and second pixel are alternately arranged；In each column pixel, first pixel and described
Two pixels are alternately arranged；First pixel pixel adjacent up and down is second pixel.
9. a kind of driving method of liquid crystal panel, it is characterised in that the driving method includes：In a frame picture is shown, adjust
The grid voltage of whole first scan line and/or the second scan line transmission, so that the drain-gate pole of the first film transistor
Voltage is identical with the drain-gate pole tension of second thin film transistor (TFT)；
Wherein, the grid of the first film transistor of all first pixels is connected to pair in the often row pixel of the liquid crystal panel
First scan line answered, the grid of the second thin film transistor (TFT) of all second pixels in the often row pixel of the liquid crystal panel
Second scan line corresponding to being connected to, the first film of all first pixels is brilliant in each column pixel of the liquid crystal panel
The source electrode of body pipe is connected to corresponding first data wire, all second pixels in each column pixel of the liquid crystal panel
The source electrode of second thin film transistor (TFT) is connected to corresponding second data wire, the first pixel electrode of first pixel and
The opposite polarity of the pixel voltage of second pixel electrode of second pixel.
10. driving method according to claim 9, it is characterised in that " adjustment first scan line and/or the
The method of the grid voltage of two scan lines transmission " includes：In a frame picture is shown, when the first number for connecting first pixel
During according to line to the first pixel high data voltage of offer, adjustment is drawn high low in the grid voltage of the first scan line transmission
Voltage；And/or when the second data wire for connecting second pixel provides low data voltage to second pixel, adjustment is drawn
Low-voltage in the grid voltage of the low second scan line transmission.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581774A (en) * | 2019-01-03 | 2019-04-05 | 京东方科技集团股份有限公司 | Display driving method, gate driver and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080079701A1 (en) * | 2006-09-29 | 2008-04-03 | Seob Shin | Low-leakage gate lines driving circuit for display device |
| CN101276564A (en) * | 2007-03-29 | 2008-10-01 | Nec液晶技术株式会社 | Liquid crystal device |
| CN101770104A (en) * | 2009-01-06 | 2010-07-07 | 群康科技(深圳)有限公司 | Liquid crystal display device |
| CN102254529A (en) * | 2011-05-23 | 2011-11-23 | 友达光电股份有限公司 | Liquid crystal display and method for charging and discharging pixels of liquid crystal display |
| CN105093731A (en) * | 2014-05-08 | 2015-11-25 | 乐金显示有限公司 | Display device and method for driving the same |
-
2017
- 2017-08-24 CN CN201710734264.3A patent/CN107422558B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080079701A1 (en) * | 2006-09-29 | 2008-04-03 | Seob Shin | Low-leakage gate lines driving circuit for display device |
| CN101276564A (en) * | 2007-03-29 | 2008-10-01 | Nec液晶技术株式会社 | Liquid crystal device |
| CN101770104A (en) * | 2009-01-06 | 2010-07-07 | 群康科技(深圳)有限公司 | Liquid crystal display device |
| CN102254529A (en) * | 2011-05-23 | 2011-11-23 | 友达光电股份有限公司 | Liquid crystal display and method for charging and discharging pixels of liquid crystal display |
| CN105093731A (en) * | 2014-05-08 | 2015-11-25 | 乐金显示有限公司 | Display device and method for driving the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581774A (en) * | 2019-01-03 | 2019-04-05 | 京东方科技集团股份有限公司 | Display driving method, gate driver and display device |
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