CN101285950B - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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Publication number
CN101285950B
CN101285950B CN2007103004610A CN200710300461A CN101285950B CN 101285950 B CN101285950 B CN 101285950B CN 2007103004610 A CN2007103004610 A CN 2007103004610A CN 200710300461 A CN200710300461 A CN 200710300461A CN 101285950 B CN101285950 B CN 101285950B
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select lines
liquid crystal
crystal indicator
data line
pixel cell
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CN101285950A (en
Inventor
张容豪
金彬
崔承灿
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LG Display Co Ltd
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LG Display Co Ltd
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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
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13454—Drivers integrated on the active matrix substrate
    • 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
    • G02F1/136286—Wiring, e.g. gate line, drain line

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)

Abstract

Disclosed herein is a liquid crystal display device which is capable of reducing the number of data drive integrated circuits (ICs) to curtail a production cost. The liquid crystal display device includes a plurality of pixel cells formed respectively in areas defined by a plurality of gate lines and a plurality of data lines, a first unit pixel including at least three of the pixel cells, the at least three pixel cells being connected to different ones of the data lines, and a second unit pixel including at least three of the pixel cells other than the at least three pixel cells of the first unit pixel, the at least three pixel cells of the second unit pixel being connected respectively to the different data lines to which the at least three pixel cells of the first unit pixel are connected,; wherein the first and second unit pixels are arranged in a direction of the data lines and connected to different ones of the gate lines. A plurality of adjacent pixel cells expressing the same colors or different colors on horizontal lines, among the pixel cells, are connected in common to the same data lines.

Description

Liquid crystal indicator
Technical field
The present invention relates to liquid crystal indicator, relate more specifically to a kind of quantity of data-driven integrated circuit (IC) that can reduce to reduce the liquid crystal indicator of manufacturing cost.
Background technology
In recent informationized society, display was paid attention to than more obtain in the past as its importance of visual information transmission medium.Developed multiple flat-panel monitor.
These flat-panel monitors for example can be LCD (LCD), Field Emission Display (FED), plasma display panel (PDP), electroluminescence (EL) display, Organic Light Emitting Diode (OLED) etc.
In these flat-panel monitors, LCD is owing to characteristics such as it is light, thin, low energy consumption driving are in interior in a big way trend of application.According to this trend, LCD has been used for such as the portable computer of notebook-PC (PC), office automation device, audio/video device, indoor/outdoor advertising display device etc., and owing to recently produces safety technique in batches and research and develop the result recently and stride forward fast towards the large scale high resolving power.
Usually, liquid crystal indicator is suitable for regulating according to vision signal the transmittance of liquid crystal cells, thus display image.This liquid crystal indicator mainly comprises: LCD panel, and it comprises with matrix arrangement liquid crystal cells with display image between two glass substrates; Be used for back light unit to the LCD panel irradiates light; And be used for supplies drive signals to drive the driving circuit of LCD panel.
Fig. 1 schematically shows the structure of conventional liquid crystal indicator.
With reference to Fig. 1, the conventional liquid crystal indicator of representing with label 1 comprises: LCD panel 10, and it comprises the pixel region that is respectively formed in the zone that is limited by many select lines GL1 to GLm and many data line DL1 to DLn; Gate driver 30 is used for supplying the gating drive signal successively to select lines GL1 to GLm; Data driver 20, video data R, the G and the B that are used for synchronously will importing wherein with the gating drive signal are supplied to data line DL1 to DLn; And timing controller 40, be used for conversion and arrange external video data R, G and B, and the video data that obtains is supplied to data driver 20, and the driving of gate driver 30 and data driver 20 is controlled.
Although it is not shown, but this liquid crystal indicator also comprises the back light unit that is used for to LCD panel 10 irradiates lights, be used for to back light unit apply voltage and current inverter, be used to generate the benchmark gamma electric voltage and it be supplied to the benchmark gamma voltage generator of data driver 20, and be used to generate the driving voltage that drives each parts and to the voltage generator of the public electrode supply common electric voltage Vcom of LCD panel 10.
LCD panel 10 comprises and faces with each other and the transistor (TFT) array substrate and the color filter array substrate of combination, be used to make the cell gap between these two array base paltes to keep constant sept, and the liquid crystal in the space that is provided by this sept is provided.
LCD panel 10 also comprises the thin film transistor (TFT) (TFT) that is respectively formed in the pixel region that is limited by m bar select lines GL1 to GLm and n bar data line DL1 to DLn, and the pixel cell that links to each other with these TFT respectively.
Each TFT is in response to from corresponding one the gating drive signal among the select lines GL1 to GLm, will give in the pixel cell corresponding one from corresponding one the analog video data signal provision among the data line DL1 to DLn.
Because be provided with public electrode of facing across liquid crystal phase and the pixel electrode that links to each other with corresponding TFT, each pixel cell can be expressed as liquid crystal capacitor Clc comparably.This pixel cell comprises holding capacitor Cst, this holding capacitor Cst be used to keep injection (charge) at the analog video data signal on the liquid crystal capacitor Clc till being injected into next analog video data signal.Public electrode supply common electric voltage Vcom to pixel cell.
Each TFT all have with select lines GL1 to GLm in a corresponding grid that links to each other, with data line DL1 to DLn in a corresponding source electrode that links to each other, and the drain electrode that links to each other with the pixel electrode of respective pixel unit.
On the color filter array substrate of LCD panel 10, be formed with the redness (R) that is the vertical stripes shape, green (G) and blue (B) color filter with matrix form.
Timing controller 40 frame by frames are arranged video data R, G and the B from the digital video adapter input, and the video data after will arranging is supplied to data driver 20.
And, timing controller 40 uses from Dot Clock DCLK, the data enable signal DE of outside input and horizontal-drive signal Hsync and vertical synchronizing signal Vsync and generates data controlling signal DCS and gating control signal GCS, and the data controlling signal DCS that generates and gating control signal GCS are imposed on data driver 20 and gate driver 30 respectively to control its driving timing.
Here, data controlling signal DCS comprises source shift clock SSC, source starting impulse SSP, polarity control signal POL and source output enable signal SOE, and gating control signal GCS comprises strobe initiator pulse GSP, gating shift clock GSC and gating output enable signal GOE.
Gate driver 30 comprises shift register, and this shift register is used in response to from the gating control signal GCS of timing controller 40 and generate gating drive signal (gated sweep pulse) successively.
This gate driver 30 is in response to from the gating control signal GCS of timing controller 40 and apply the gating drive signal to select lines GL1 to GLm successively, thereby makes the TFT conducting that links to each other with select lines GL1 to GLm respectively.At this moment, gate driver 30 still is that gating low pressure VGL determines that high level voltage still is the gating drive signal of low level voltage according to imported gating high pressure VGH to it.
Data driver 20 is in response to the data controlling signal DCS from timing controller 40 supplies, according to the interval of supply gating drive signal, to data line DL1 to DLn supply analog video data signal.At this moment, data driver 20 will wait to be supplied to the reversal of poles of the analog video data signal of data line DL1 to DLn in response to polarity control signal POL.
In above-mentioned conventional liquid crystal indicator, be formed on redness (R) in the LCD panel, green (G) and blue (B) color filter and be the vertical stripes shape, and three adjacent redness (R), green (G) and blueness (B) color filters of level make up and constitute a unit picture element.Thereby this liquid crystal indicator needs 3 * n bar data line DL and 1 * m bar select lines to show the resolution of m * n.
Need the lot of data drive IC to come to this 3 * n bar data line DL supply video data.But data-driven IC cost is very high, thereby causes the manufacturing cost of liquid crystal indicator to increase.
Summary of the invention
Therefore, the present invention is intended to a kind ofly overcome basically because the limitation of prior art and the liquid crystal indicator of one or more problems that shortcoming causes.
The purpose of this invention is to provide a kind of quantity of data-driven IC that can reduce to reduce the liquid crystal indicator of manufacturing cost.
The part of other advantage of the present invention, purpose and feature will be set forth in explanation subsequently, and can become clear after the content of a part below having been studied by those of ordinary skills, perhaps can know by implementing the present invention.Above-mentioned purpose of the present invention and other advantage can be realized by the structure of specifically noting in instructions and claims and accompanying drawing and obtain.
In order to realize these purposes and other advantage, and according to institute's imbody and broadly described invention aim herein, a kind of liquid crystal indicator comprises: gate driver is used for to many select liness supplies drive signals successively; Data driver is used for respectively to many data line supply video data-signals; A plurality of pixel cells are respectively formed in the zone that is limited by described select lines and described data line; First unit picture element, it comprises in the described pixel cell at least three, described at least three pixel cells are connected to the different pieces of information line in the described data line; And second unit picture element, it comprises except described at least three pixel cells of described first unit picture element at least three in the described pixel cell, described at least three pixel cells of described second unit picture element are connected to the different data line of the data line that described at least three pixel cells connected with described first unit picture element respectively, wherein, different select liness in the described select lines are arranged and be connected to described first unit picture element and described second unit picture element along the direction of described data line.
In another aspect of this invention, a kind of liquid crystal indicator comprises: gate driver is used for to many select liness supplies drive signals successively; Data driver is used for respectively to many data line supply video data-signals; And a plurality of pixel cells, be respectively formed in the zone that limits by described select lines and described data line, wherein, in described a plurality of pixel cells, a plurality of adjacent pixel unit that show as same color or different colours on the horizontal line are connected on the same data line jointly.
Should be appreciated that above to general introduction of the present invention with all be exemplary and indicative hereinafter to detailed description of the present invention, aim to provide further explanation to claimed invention.
Description of drawings
Included be used to provide to further understanding of the present invention and be merged in and the accompanying drawing that constitutes the part of this instructions shows embodiments of the present invention, and be used from the explanation principle of the invention with this instructions one.In the accompanying drawings:
Fig. 1 is the synoptic diagram of conventional liquid crystal indicator;
Fig. 2 shows the structure according to the liquid crystal indicator of first embodiment of the invention;
Fig. 3 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of first embodiment of the invention;
Fig. 4 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 3;
Fig. 5 shows the super pixel grayscale mode (super pixel gray pattern) according to the liquid crystal indicator of first embodiment of the invention;
Fig. 6 shows the structure according to the liquid crystal indicator of second embodiment of the invention;
Fig. 7 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of second embodiment of the invention;
Fig. 8 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 7;
Fig. 9 shows the structure according to the liquid crystal indicator of third embodiment of the invention;
Figure 10 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of third embodiment of the invention;
Figure 11 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 10;
Figure 12 is the oscillogram that imposes on according to the alternative embodiment of the video data of the data line of the liquid crystal indicator of third embodiment of the invention;
Figure 13 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 12;
Figure 14 shows the structure according to the liquid crystal indicator of four embodiment of the invention;
Figure 15 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of four embodiment of the invention;
Figure 16 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 15;
Figure 17 is the oscillogram that imposes on according to the alternative embodiment of the video data of the data line of the liquid crystal indicator of four embodiment of the invention;
Figure 18 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 17;
Figure 19 shows the structure according to the liquid crystal indicator of fifth embodiment of the invention;
Figure 20 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of fifth embodiment of the invention;
Figure 21 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 20;
Figure 22 shows the structure according to the liquid crystal indicator of sixth embodiment of the invention;
Figure 23 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of sixth embodiment of the invention;
Figure 24 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 23;
Figure 25 shows the structure according to the liquid crystal indicator of seventh embodiment of the invention;
Figure 26 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of seventh embodiment of the invention; And
Figure 27 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 26.
Embodiment
To its example be shown in the accompanying drawing in detail with reference to preferred implementation of the present invention below.Whenever possible, just in all accompanying drawings, show as same or analogous part with identical label.
Fig. 2 shows the structure according to the liquid crystal indicator of first embodiment of the invention.
Only show the part in the whole zone of LCD panel among Fig. 2.
With reference to Fig. 2, the liquid crystal indicator of representing with label 100 according to first embodiment of the invention comprises: LCD panel 110, and it comprises a plurality of pixel regions that are respectively formed in the zone that is limited by many select lines GL1 to GLm and many data line DL1 to DLn; Gate driver 130 is used for supplying the gating drive signal successively to select lines GL1 to GLm; Data driver 120 is used for synchronously video data R, G and the B that is imported being supplied to data line DL1 to DLn with the gating drive signal; And timing controller 140, be used for external video data R, G and B are changed and arrange, and the video data that obtains is supplied to data driver 120, and the driving of gate driver 130 and data driver 120 is controlled.
Here, data line DL1 to DL6 receives from the analog video data signal of data driver 120 outputs by passage 121a to 121f corresponding with it respectively.
Although it is not shown, but according to the liquid crystal indicator 100 of first embodiment of the invention also comprise the back light unit that is used for to LCD panel 110 irradiates lights, be used for to back light unit apply voltage and current inverter, be used to generate the benchmark gamma electric voltage and it be supplied to the benchmark gamma voltage generator of data driver 120, and be used to generate that driving voltage drives each parts and to the voltage generator of the public electrode supply common electric voltage Vcom of LCD panel 110.
Only show some the select lines GL1 to GL10 among described many select lines GL1 to GLm among Fig. 2.And, only show some the data line DL1 to DL6 among described many data line DL1 to DLn.Thereby, also only show with described many corresponding passages of data line DL1 to DLn in some passage 121a to 121f.
Comprise according to the LCD panel 110 of the liquid crystal indicator 100 of first embodiment of the invention facing with each other and the transistor (TFT) array substrate and the color filter array substrate of combination, being used to keep the constant sept of cell gap between these two array base paltes, and the liquid crystal in the space that provides by this sept is provided.
As shown in Figure 2, LCD panel 110 also comprises: form m bar select lines GL1 to GLm in the horizontal direction; Form n bar data line DL1 to DLn in vertical direction, every data line is connected to the horizontal adjacent pixel unit that shows as same color all publicly; Be respectively formed at the TFT in the pixel region that limits by m bar select lines GL1 to GLm and n bar data line DL1 to DLn; And the pixel cell that links to each other with these TFT respectively.
In more detail, pixel cell R11 to B1n is formed on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, and pixel cell R21 to B2n is formed on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4.
Subsequently, be formed at the pixel cell (till m select lines GLm) that each alternately forms three kinds of colors (R, G and B) on to the horizontal line between the select lines GL as mentioned above.
In a plurality of pixel cells on being formed at a horizontal line, the pixel cell of adjacent three kinds of colors (R, G and B) has constituted a unit picture element.Odd number unit picture element in these unit picture elements respectively with odd number select lines GL1, GL3 ..., GLm-1 links to each other, and the even number unit picture element respectively with even number select lines GL2, GL4 ..., GLm links to each other.
On a horizontal line in a pair of adjacent cells pixel, the pixel cell that shows as same color that constitutes in the pixel cell of three kinds of colors (R, G and B) of each unit picture element is connected to same data line DL publicly.
For example, among the pixel cell R11 to B1n on being formed at first horizontal line, the red pixel unit " R11 " and " R12 " that show as same color are connected to the first data line DL1 publicly, the green pixel unit " G11 " and " G12 " that show as same color are connected to the second data line DL2 publicly, and the blue pixel unit " B11 " and " B12 " that show as same color are connected to the 3rd data line DL3 publicly.
This is equally applicable to the pixel cell of follow-up arrangement.That is to say that as mentioned above, in a pair of adjacent cells pixel, the pixel cell that shows as same color that constitutes in the pixel cell of three kinds of colors (R, G and B) of each unit picture element is connected to same data line DL publicly.
Each TFT is in response to from corresponding one the gating drive signal (sweep signal) among the select lines GL1 to GLm, will give in the pixel cell corresponding one from corresponding one the analog video data signal provision among the data line DL1 to DLn.
Each pixel cell is because be provided with public electrode of facing across liquid crystal phase and the pixel electrode that links to each other with corresponding TFT, so can show as liquid crystal capacitor Clc comparably.This pixel cell comprises holding capacitor Cst, and this holding capacitor Cst is used to keep being infused in analog video data signal on the liquid crystal capacitor Clc up to injected next analog video data signal to it till.Public electrode supply common electric voltage Vcom to pixel cell.
Each TFT all have with select lines GL1 to GLm in a corresponding grid that links to each other, with data line DL1 to DLn in a corresponding source electrode that links to each other, and the drain electrode that links to each other with the pixel electrode of respective pixel unit.
On the color filter array substrate of LCD panel 110, the redness (R) that is the vertical stripes shape, green (G) and blue (B) color filter are arranged.
By this layout of color filter, the pixel cell of same color is arranged in vertical direction, and R, G and B pixel cell arranged alternate in the horizontal direction.Therefore, these pixel cells are arranged to matrix form.
Timing controller 140 frame by frames are arranged video data R, G and the B from the digital video adapter input, and the video data after will arranging is supplied to data driver 120.Data driver 120 comprises a plurality of data-driven IC that are used for to many data line supply video data-signals.
Timing controller 140 also utilizes from Dot Clock DCLK, the data enable signal DE of outside input and horizontal-drive signal Hsync and vertical synchronizing signal Vsync and generates data controlling signal DCS and gating control signal GCS, and the data controlling signal DCS that generates and gating control signal GCS are imposed on data driver 120 and gate driver 130 respectively to control its driving timing.
Here, data controlling signal DCS comprises source shift clock SSC, source starting impulse SSP, polarity control signal POL and source output enable signal SOE.
Gating control signal GCS comprises strobe initiator pulse GSP, gating shift clock GSC and gating output enable signal GOE.
Gate driver 130 comprises shift register, and this shift register is used in response to from the gating control signal GCS of timing controller 140 and generate gating drive signal (gated sweep pulse) successively.
This gate driver 130 is in response to from the gating control signal GCS of timing controller 140 and apply gating drive signal (sweep signal) to select lines GL1 to GLm successively, thereby makes the TFT conducting that links to each other with select lines GL1 to GLm respectively.
At this moment, gate driver 130 is that gating high pressure VGH or gating low pressure VGL determine that the gating drive signal is high level voltage or low level voltage according to what import.This gate driver can directly be equipped on the glass substrate.
Data driver 120 is supplied analog video data signal according to the interval of supply gating drive signal to data line DL1 to DLn in response to the data controlling signal DCS from timing controller 140 supplies.At this moment, data driver 120 will wait to be supplied to the reversal of poles of the analog video data signal of data line DL1 to DLn in response to polarity control signal POL.
These data driver 120 inside comprise a plurality of data-driven IC.From the analog video data signal of described a plurality of data-driven IC output by being supplied to described many data line DL1 to DLn that are formed on the LCD panel 110 respectively with the corresponding a plurality of passages 121 of described many data line DL1 to DLn respectively.
Frame reverse system, row reverse system, a row counter-rotatings reverse system of unifying all can be applicable to drive this liquid crystal indicator 100 according to the liquid crystal indicator 100 of first embodiment of the invention.
In the following detailed description, will be example with one of above-mentioned drive system.Will be described in detail below to preventing to crosstalk and glimmering and realize that low energy consumption is to using the situation of 2 reverse systems according to the liquid crystal indicator 100 of first embodiment of the invention.In 2 reverse systems, for per two vertical adjacent unit pixel, the analog video signal that is infused in the LCD panel 110 has different polarity.
Fig. 3 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of first embodiment of the invention, and Fig. 4 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 3.
With reference to Fig. 2 to Fig. 4 driving method according to the liquid crystal indicator of first embodiment of the invention is described below.
In the liquid crystal indicator 100 according to first embodiment of the invention, in the period, the TFT that links to each other with vertically arranged redness (R), green (G) and blue (B) pixel cell is in vertical direction conducting successively respectively at a frame.For this reason, according to the order from the first select lines GL1 to m select lines GLm, GL1 to GLm applies gating drive signal (sweep signal) to m bar select lines.
If apply the first gating drive signal to the first select lines GL1 in the period at a frame, then respectively with first horizontal line on the pixel cell R11 of formation odd number unit picture element, G11, B11, R13, G13, B13 ... the TFT conducting that links to each other.
Afterwards, if apply the second gating drive signal to the second select lines GL2, then respectively with first horizontal line on the pixel cell R12 of formation even number unit picture element, G12, B12, R14, G14, B14 ... the TFT conducting that links to each other.
Then, if apply the 3rd gating drive signal to the 3rd select lines GL3, then respectively with second horizontal line on the pixel cell R21 of formation odd number unit picture element, G21, B21, R23, G23, B23 ... the TFT conducting that links to each other.
Afterwards, if apply the 4th gating drive signal to the 4th select lines GL4, then respectively with second horizontal line on the pixel cell R22 of formation even number unit picture element, G22, B22, R24, G24, B24 ... the TFT conducting that links to each other.
Subsequently, if apply the 5th to m gating drive signal to the 5th to m select lines GL5 to GLm respectively, then as mentioned above with these select liness in each TFT that links to each other respectively conducting to drive corresponding pixel cell.
If apply the gating drive signal to first successively to the m select lines, then the interval according to supply gating drive signal applies analog video data signal shown in Figure 3 to corresponding data line DL1 to DLn.
If to data line DL1 to DLn supply as shown in Figure 3 with two pixels analog video data signal that is basic reversed polarity, then to have injected polarity as shown in Figure 4 in the pixel cell of LCD panel 110 serve as the basis counter-rotating with 1 in the horizontal direction and serve as the basic video data signal that reverses in vertical direction with 2.
Drive system at the liquid crystal indicator of the general structure with the quantity that is used for reducing data line drives the gating drive signal so that the gating drive signal has the mode of short duration 1H.If drive the gating drive signal to lack duration 1H, such phenomenon will appear, that is: there is not to inject the video data signal for the treatment of by data line DL supply.In order to prevent this phenomenon of not injecting, drive the gating drive signal with overlap mode.
But if drive the gating drive signal with overlap mode, then the image quality in images that shows in proper order according to the injection of video data signal in pixel cell can be because the pre-injection of pixel cell video data signal and variation.
As the test pattern of this picture quality variation of test, used super pixel grayscale mode test, in the wherein adjacent up and down unit picture element one opens and other unit picture element is closed.When carrying out the test of super pixel grayscale mode for liquid crystal indicator according to first embodiment of the invention, inject the black video data in advance to showing as all green pixel cells, as shown in Figure 5, with prevent picture quality since video data signal between injection difference and variation.Thereby, can reduce liquid crystal indicator data-driven IC quantity and can not make the display quality variation of this display device.
In liquid crystal indicator according to first embodiment of the invention, pass through said structure, can make the pixel cell that shows as same color in the middle of the corresponding three kinds of colored pixels unit that constitute a pair of adjacent cells pixel be connected to same data line publicly, thereby make in the conventional liquid crystal indicator that the quantity of the data-driven IC of costliness can be reduced to shown in Figure 1 half.Therefore, can reduce the manufacturing cost of liquid crystal indicator.
Fig. 6 has used the structure according to the liquid crystal indicator of second embodiment of the invention.
Liquid crystal indicator according to second embodiment of the invention is represented with label 200, in LCD panel 210 being connected of select lines GL, data line DL and pixel cell, it has and the structure identical according to the liquid crystal indicator 100 of first embodiment of the invention, therefore omits the detailed description to identical composed component.
With reference to Fig. 6, comprise LCD panel 210 according to the liquid crystal indicator 200 of second embodiment of the invention, this LCD panel comprises: the m bar select lines GL1 to GLm that along continuous straight runs forms; The n bar data line DL1 to DLn of Xing Chenging vertically, every data line is connected to the adjacent pixel unit that shows as same color all publicly; Be respectively formed at the TFT in the pixel region that limits by m bar select lines GL1 to GLm and n bar data line DL1 to DLn; And the pixel cell that links to each other with these TFT respectively.
Liquid crystal indicator 200 according to second embodiment of the invention also comprises: gate driver 230 is used for supplying the gating drive signal successively to select lines GL1 to GLm; Data driver 220 is used for synchronously video data R, G and the B that is imported being supplied to data line DL1 to DLn with the gating drive signal; And timing controller 240, be used for external video data R, G and B are changed and arrange, and the video data that obtains is supplied to data driver 220, and the driving of gate driver 230 and data driver 220 is controlled.
Here, data line DL1 to DL6 receives from the analog video data signal of data driver 220 outputs by passage 121a to 121f corresponding with it respectively.In Fig. 6, only show some in select lines GL, data line DL and the passage.
In LCD panel 210 according to the liquid crystal indicator 200 of second embodiment of the invention, pixel cell R11 to B1n is formed on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, and pixel cell R21 to B2n is formed on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4.Subsequently, be formed at the pixel cell (till m select lines GLm) that each alternately forms three kinds of colors (R, G and B) on to the horizontal line between the select lines GL as mentioned above.
In these pixel cells, the pixel cell of the adjacent three kinds of colors (R, G and B) on horizontal line constitutes a unit picture element.In these unit picture elements, a unit picture element on a horizontal line in two unit picture elements adjacent with the arbitrary unit pixel is connected to the identical select lines GL that is connected with this arbitrary unit pixel, and another unit picture element is connected to the select lines GL that is different from the select lines GL that this arbitrary unit pixel connected.
Be described in detail for example with reference to Fig. 6 below, on first horizontal line, pixel cell " R11, G11 and B11 " has constituted first unit picture element, pixel cell " R12, G12 and B12 " has constituted second unit picture element, and pixel cell " R13, G13 and B13 " has constituted the 3rd unit picture element.Here, first unit picture element links to each other with the second select lines GL2, and second unit picture element links to each other with the first select lines GL1 with the 3rd unit picture element.
About second unit picture element, first unit picture element that is positioned at the second unit picture element left-hand side is connected to the second different select lines GL2 of the first select lines GL1 that is connected with second unit picture element.What contrast is that the 3rd unit picture element that is positioned at the second unit picture element right-hand side is connected to the first identical select lines GL1 of the first select lines GL1 that is connected with second unit picture element.
Except these select liness connect, in being connected to a pair of unit picture element of different select lines GL, in the pixel cell of the three kinds of colors (R, G and B) that constitute each unit picture element, the pixel cell that shows as same color is connected to same data line DL publicly.
For example, pixel cell on being formed at first horizontal line " R11 " is in " B1n ", be connected to the first data line DL1 with the red pixel unit " R11 " and " R12 " that are connected to different select lines GL and show as same color publicly, the green pixel unit " G11 " and " G12 " that are connected to different select lines GL and show as same color are connected to the second data line DL2 publicly, and the blue pixel unit " B11 " and " B12 " that are connected to different select lines GL and show as same color are connected to the 3rd data line DL3 publicly.
This is applicable to the pixel cell of follow-up arrangement too.That is to say, as mentioned above, in a pair of adjacent unit picture element, a plurality of pixel cells that are connected to different select lines GL and show as same color that constitute in the pixel cell of three kinds of colors (R, G and B) of each unit picture element are connected to same data line DL publicly.
Frame reverse system, row reverse system, a row counter-rotatings reverse system of unifying all can be applicable to drive this liquid crystal indicator 200 according to the liquid crystal indicator 200 of second embodiment of the invention.
To describe in detail below to the situation of using the row reverse system in the above-mentioned drive system according to the liquid crystal indicator 200 of second embodiment of the invention.In the row reverse system, the polarity that is infused in the video data signal in the LCD panel 210 serves as the basis counter-rotating with 1 in the horizontal direction, also is like this in vertical direction.
Fig. 7 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of second embodiment of the invention, and Fig. 8 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 7.
With reference to Fig. 6 to Fig. 8 driving method according to the liquid crystal indicator of second embodiment of the invention is described below.
In liquid crystal indicator 200 according to second embodiment of the invention, at a frame in the period, the TFT conducting successively in vertical direction that links to each other with vertically arranged redness (R), green (G) and blueness (B) pixel cell respectively.For this reason, according to the order from the first select lines GL1 to m select lines GLm, GL1 to GLm applies gating drive signal (sweep signal) to m bar select lines.
If apply the first gating drive signal to the first select lines GL1 in the period at a frame, the pixel cell R12 that on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, links to each other then, G12 with the first select lines GL1, B12, R13, G13, B13 ... the TFT conducting.
Afterwards, if apply the second gating drive signal to the second select lines GL2, the pixel cell R11 that links to each other with the second select lines GL2 then, G11, B11, R14, G14, B14 ... the TFT conducting.That is to say, in the pixel cell on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, except that the TFT conducting of the pixel cell the pixel cell of conducting owing to the first gating drive signal that inputs to the first select lines GL1 before.
Then, if apply the 3rd gating drive signal to the 3rd select lines GL3, the pixel cell R21 that on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, links to each other then with the 3rd select lines GL3, G21, B21, R24, G24, B24 ... the TFT conducting.
Afterwards, if apply the 4th gating drive signal to the 4th select lines GL4, the pixel cell R22 that links to each other with the 4th select lines GL4 then, G22, B22, R23, G23, B23 ... the TFT conducting.
That is to say, in the pixel cell on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the 3rd gating drive signal that inputs to before the 3rd select lines GL3.
Subsequently, if apply the 5th to m gating drive signal to the 5th to m select lines GL5 to GLm respectively, then as mentioned above, being formed at the TFT conducting that each links to each other with every logical line on to the horizontal line between the select lines GL, to drive corresponding pixel cell respectively.
If apply the gating drive signal to first successively to the m select lines, then analog video data signal as shown in Figure 7 is applied in to corresponding data line DL1 to DLn with the interval of supply gating drive signal.
If apply as shown in Figure 7 analog video data signal to data line DL1 to DLn, then having injected polarity in the pixel cell of LCD panel 210 serves as basis counter-rotating and in vertical direction to classify the video data signal of basis counter-rotating as with 1 in the horizontal direction.
When the liquid crystal indicator according to second embodiment of the invention being carried out the test of super pixel grayscale mode, as shown in Figure 5 all pixel cells have been injected the black video data in advance, thus prevent picture quality since video data signal between injection difference and variation.Thereby, can reduce liquid crystal indicator data-driven IC quantity and can not make the display quality variation of this display device.
In liquid crystal indicator according to second embodiment of the invention, pass through said structure, can make the pixel cell that shows as same color in the middle of the corresponding three kinds of colored pixels unit that constitute a pair of adjacent cells pixel be commonly connected to same data line, thereby make half of the conventional liquid crystal indicator that the quantity of the data-driven IC of costliness can be reduced to shown in Figure 1.Therefore, can reduce the manufacturing cost of liquid crystal indicator.
Fig. 9 shows the structure according to the liquid crystal indicator of third embodiment of the invention.
Liquid crystal indicator according to third embodiment of the invention is represented with label 300, in LCD panel 310 being connected of select lines GL, data line DL and pixel cell, it has liquid crystal indicator 100 and 200 identical structures with first and second embodiments according to the present invention, therefore omits the detailed description to identical composed component.
With reference to Fig. 9, comprise LCD panel 310 according to the liquid crystal indicator 300 of third embodiment of the invention, this LCD panel comprises: the m bar select lines GL1 to GLm that along continuous straight runs forms; The n bar data line DL1 to DLn of Xing Chenging vertically, every data line all is commonly connected to the horizontal adjacent unit pixel that shows as same color; Be respectively formed at the TFT in the pixel region that limits by m bar select lines GL1 to GLm and n bar data line DL1 to DLn; And the pixel cell that links to each other with these TFT respectively.
Liquid crystal indicator 300 according to third embodiment of the invention also comprises: gate driver 330 is used for supplying the gating drive signal successively to select lines GL1 to GLm; Data driver 320 is used for video data R, the G that will be imported and B and gating drive signal and synchronously is supplied to data line DL1 to DLn; And timing controller 340, be used for external video data R, G and B are changed and arrange, and the video data that obtains is supplied to data driver 320, and the driving of gate driver 330 and data driver 320 is controlled.
Here, data line DL1 to DL6 receives from the analog video data signal of data driver 320 outputs by corresponding with it passage 121a to 121f respectively.
In LCD panel 310 according to the liquid crystal indicator 300 of third embodiment of the invention, pixel cell R11 to B1n is formed on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, and pixel cell R21 to B2n is formed on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4.
Subsequently, between each is to select lines GL, alternately form the pixel cell (till m select lines GLm) of three kinds of colors (R, G and B) as mentioned above.
In these pixel cells, the pixel cell of the adjacent three kinds of colors (R, G and B) on horizontal line has constituted a unit picture element.
In these unit picture elements, two adjacent cells pixels on horizontal line link to each other with different select lines GL.
Give an example with reference to Fig. 9 below and describe in detail, on first horizontal line, pixel cell " R11, G11 and B11 " has constituted first unit picture element, and pixel cell " R12, G12 and B12 " has constituted second unit picture element, and pixel cell " R13, G13 and B13 " has constituted the 3rd unit picture element.Here, first unit picture element links to each other with the second select lines GL2, and second unit picture element links to each other with the first select lines GL1, and the 3rd unit picture element links to each other with the second select lines GL2.
About second unit picture element, first unit picture element that lays respectively at the left-hand side of second unit picture element and right-hand side and the 3rd unit picture element link to each other with the second select lines GL2 that is different from the first select lines GL1 that second unit picture element is connected.
Except these select liness connect, with a pair of adjacent unit picture element that different select lines GL links to each other in, in the pixel cell of the three kinds of colors (R, G and B) that constitute each unit picture element, the pixel cell that shows as same color is connected to same data line DL publicly.
For example, among the pixel cell R11 to B1n on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, linking to each other with the first select lines GL1 and showing as red pixel cell R12 is commonly connected to the same first data line DL1 with the pixel cell R1 1 that links to each other with the second select lines GL2 and show as redness.That is to say, link to each other with different select lines GL and the red pixel unit R 11 and the R12 that show as same color is connected to the first data line DL1 publicly.
In addition, the green pixel unit G11 and the G12 that link to each other with different select lines GL and show as same color are connected to the second data line DL2 publicly, and link to each other with different select lines GL and the blue pixel unit B 11 and the B12 that show as same color is connected to the 3rd data line DL3 publicly.
This is applicable to the pixel cell of follow-up arrangement too.That is to say that as mentioned above, in a pair of adjacent unit picture element, in the pixel cell of the three kinds of colors (R, G and B) that constitute each unit picture element, the pixel cell of the same color that links to each other with different select lines GL is connected to same data line DL publicly.
Frame reverse system, row reverse system, a row counter-rotatings reverse system of unifying all can be applicable to drive this liquid crystal indicator 300 according to the liquid crystal indicator 300 of third embodiment of the invention.
Will be described in detail below to the situation of using the some reverse system in the above-mentioned drive system according to the liquid crystal indicator 300 of third embodiment of the invention.In this reverse system, the polarity that is infused in the vision signal in the LCD panel 310 serves as the basis counter-rotating with 1 or 2 in the horizontal direction, and serves as the basis counter-rotating with 1 in vertical direction.
Figure 10 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of third embodiment of the invention, and Figure 11 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 10.
With reference to Fig. 9 to Figure 11 driving method according to the liquid crystal indicator of third embodiment of the invention is described below.
In liquid crystal indicator 300 according to third embodiment of the invention, at a frame in the period, the TFT conducting successively in vertical direction that links to each other with vertically arranged redness (R), green (G) and blueness (B) pixel cell respectively.For this reason, according to the order from the first select lines GL1 to m select lines GLm, GL1 to GLm applies gating drive signal (sweep signal) to m bar select lines.
If apply the first gating drive signal to the first select lines GL1 in the period at a frame, the pixel cell R12 that on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, links to each other then, G12 with the first select lines GL1, B12, R14, G14, B14 ... the TFT conducting.
Afterwards, if apply the second gating drive signal to the second select lines GL2, the pixel cell R11 that links to each other with the second select lines GL2 then, G11, B11, R13, G13, B13 ... the TFT conducting.That is to say, in the pixel cell on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the first gating drive signal that inputs to before the first select lines GL1.
Then, if apply the 3rd gating drive signal to the 3rd select lines GL3, the pixel cell R21 that on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, links to each other then with the 3rd select lines GL3, G21, B21, R23, G23, B23 ... the TFT conducting.
Afterwards, if apply the 4th gating drive signal to the 4th select lines GL4, the pixel cell R22 that links to each other with the 4th select lines GL4 then, G22, B22, R24, G24, B24 ... the TFT conducting.
That is to say, in the pixel cell on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the 3rd gating drive signal that inputs to before the 3rd select lines GL3.
Subsequently, if apply the 5th to m gating drive signal to the 5th to m select lines GL5 to GLm respectively, then as mentioned above, being formed at the TFT conducting that each links to each other with each select lines on to the horizontal line between the select lines GL, to drive corresponding pixel cell respectively.
If apply the gating drive signal to first successively to the m select lines, then polarity as shown in figure 10 serves as that the analog video data signal of basis counter-rotating is applied in to corresponding data line DL1 to DLn with the interval of supply gating drive signal with 2 pixels.
If apply as shown in figure 10 analog video data signal to data line DL1 to DLn, then having injected as shown in figure 11 in the pixel cell of LCD panel 310, polarity serves as the basis counter-rotating with 1 or 2 in the horizontal direction and serve as the video data signal that reverses in the basis with 1 in vertical direction.
Figure 12 is the oscillogram that imposes on according to the video data alternative embodiment of the data line of the liquid crystal indicator of third embodiment of the invention, and Figure 13 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 12.
On the other hand, if applying to the data line DL1 to DLn according to the liquid crystal indicator 300 of third embodiment of the invention serves as the analog video data signal of basis symmetry with 8 pixels as shown in figure 12, then having injected as shown in figure 13 in the pixel cell of LCD panel 310, polarity serve as the basis counter-rotating with 1 in the horizontal direction and serve as the basic video data signal that reverses with 2 in vertical direction.
When the liquid crystal indicator according to third embodiment of the invention being carried out the test of super pixel grayscale mode, as shown in Figure 5 all pixel cells have been injected the black video data in advance, with prevent picture quality since video data signal between injection difference and variation.Thereby, can reduce liquid crystal indicator data-driven IC quantity and can not make the display quality variation of this display device.
In liquid crystal indicator according to third embodiment of the invention, pass through said structure, can make the pixel cell that shows as same color in the middle of the corresponding three kinds of colored pixels unit that constitute a pair of adjacent cells pixel be connected to same data line publicly, thereby the quantity of the data-driven IC of costliness can be reduced to conventional liquid crystal indicator shown in Figure 1 half.Therefore, can reduce the manufacturing cost of liquid crystal indicator.
Figure 14 shows the structure according to the liquid crystal indicator of four embodiment of the invention.
Liquid crystal indicator according to four embodiment of the invention is represented with label 400, in LCD panel 410 being connected of select lines GL, data line DL and pixel cell, it has the structure identical with the liquid crystal indicator 100 to 300 of first to the 3rd embodiment according to the present invention, therefore omits the detailed description to identical composed component.
With reference to Figure 14, comprise LCD panel 410 according to the liquid crystal indicator 400 of four embodiment of the invention, this LCD panel comprises: the m bar select lines GL1 to GLm that along continuous straight runs forms; The n bar data line DL1 to DLn of Xing Chenging vertically, every data line is connected to the adjacent pixel unit that shows as same color all publicly; Be respectively formed at the TFT in the pixel region that limits by m bar select lines GL1 to GLm and n bar data line DL1 to DLn; And the pixel cell that links to each other with these TFT respectively.
Liquid crystal indicator 400 according to four embodiment of the invention also comprises: gate driver 430 is used for supplying the gating drive signal successively to select lines GL1 to GLm; Data driver 420 is used for video data R, the G that will be imported and B and gating drive signal and synchronously is supplied to data line DL1 to DLn; And timing controller 440, be used for external video data R, G and B are changed and arrange, and the video data that obtains is supplied to data driver 420, and the driving of gate driver 430 and data driver 420 is controlled.
Here, data line DL1 to DL6 receives from the analog video data signal of data driver 420 outputs by corresponding with it passage 121a to 121f respectively.
The quantity of passage is identical with the quantity of data line DL1 to DLn in being formed on LCD panel 410.(4i) passage links to each other with (4i+1) data line, and (4i+1) passage links to each other with (4i) data line.
For example, as shown in figure 14, the first passage 121a among n passage 121a to 121n links to each other with the first data line DL1, and second channel 121b links to each other with the second data line DL2, third channel 121c links to each other with the 3rd data line DL3, and the 6th passage 121f links to each other with the 6th data line DL6.
Being connected to and corresponding the 5th data line DL5 of (4i+1) data line with the corresponding passage 121d of (4i) passage among n passage 121a to 121n is connected to and corresponding the 4th data line DL4 of (4i) data line with the corresponding passage 121e of (4i+1) passage.
As mentioned above, n bar data line DL1 to DLn is connected to corresponding with it respectively passage 121a to 121n, and receives corresponding video data signal by the passage 121a to 121n that links to each other respectively.
In LCD panel 410 according to the liquid crystal indicator 400 of four embodiment of the invention, pixel cell " R11 " to " B1n " is formed on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, and pixel cell " R21 " to " B2n " is formed on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4.
Subsequently, be formed at the pixel cell (till m select lines GLm) that each alternately forms three kinds of colors (R, G and B) on to the horizontal line between the select lines GL as mentioned above.
In these pixel cells, be positioned on the horizontal line and be connected to same select lines GL and thereby the pixel cell of adjacent three kinds of colors (R, G and B) of conducting constituted a unit picture element.
In these unit picture elements, two unit picture elements on horizontal line are connected to different select lines GL.
In being connected to a pair of adjacent cells pixel of different select lines GL, in the pixel cell of the three kinds of colors (R, G and B) that constitute corresponding unit picture element, the pixel cell that shows as same color is connected to same data line DL publicly.
For example, pixel cell " R11 " on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2 is in " B1n ", and the red pixel unit " R14 " that links to each other with the first select lines GL1 is connected to the same first data line DL4 with the red pixel unit " R13 " that links to each other with the second select lines GL2 publicly.
That is to say, link to each other with different select lines GL on the horizontal line and the red pixel unit " R14 " and " R13 " that show as same color is connected to the 4th data line DL4 publicly.
In addition, the green pixel unit " G13 " and " G14 " that link to each other with different select lines GL and show as same color are connected to the 5th data line DL5 publicly, and blue pixel unit " B13 " and " B14 " continuous with different select lines GL and that show as same color are connected to the 6th data line DL6 publicly.
This is applicable to the pixel cell of follow-up arrangement too.That is to say that as mentioned above, in a pair of adjacent unit picture element, in the pixel cell of the three kinds of colors (R, G and B) that constitute corresponding unit picture element, the pixel cell of the same color that links to each other with different select lines GL is connected to same data line DL publicly.
Frame reverse system, row reverse system, a row counter-rotatings reverse system of unifying all can be applicable to drive this liquid crystal indicator 400 according to the liquid crystal indicator 400 of four embodiment of the invention.
Will be described in detail below to the situation of using the some reverse system in the above-mentioned drive system according to the liquid crystal indicator 400 of four embodiment of the invention.In this reverse system, the polarity that is infused in the video data signal in the LCD panel 410 serves as the basis counter-rotating with 1 in the horizontal direction, and serve as to reverse in the basis in vertical direction with 2.
Figure 15 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of four embodiment of the invention, and Figure 16 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 15.
With reference to Figure 14 to Figure 16 driving method according to the liquid crystal indicator of four embodiment of the invention is described below.
In liquid crystal indicator 400 according to four embodiment of the invention, at a frame in the period, the TFT conducting successively in vertical direction that links to each other with vertically arranged redness (R), green (G) and blueness (B) pixel cell respectively.For this reason, according to the order from the first select lines GL1 to m select lines GLm, GL1 to GLm applies gating drive signal (sweep signal) to m bar select lines.
If apply the first gating drive signal to the first select lines GL1 in the period at a frame, the pixel cell R12 that on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, links to each other then, G12 with the first select lines GL1, B12, B13, R14, G14 ... the TFT conducting.
Afterwards, if apply the second gating drive signal to the second select lines GL2, the pixel cell R11 that links to each other with the second select lines GL2 then, G11, B11, R13, G13, B14 ... the TFT conducting.
That is to say, in the pixel cell on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the first gating drive signal that inputs to before the first select lines GL1.
Then, if apply the 3rd gating drive signal to the 3rd select lines GL3, the pixel cell R21 that on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, links to each other then with the 3rd select lines GL3, G21, B21, R23, G23, B24 ... the TFT conducting.
Afterwards, if apply the 4th gating drive signal to the 4th select lines GL4, the pixel cell R22 that links to each other with the 4th select lines GL4 then, G22, B22, B23, R24, the TFT conducting of G24....
That is to say, in the pixel cell on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the 3rd gating drive signal that inputs to before the 3rd select lines GL3.
Subsequently, if apply the 5th to m gating drive signal to the 5th to m select lines GL5 to GLm respectively, then as mentioned above, being formed at the TFT conducting that each links to each other with each select lines on to the horizontal line between the select lines GL, to drive corresponding pixel cell respectively.
If apply the gating drive signal successively to the m select lines, serve as that the analog video data signal of basis symmetry is applied in to corresponding data line DL1 to DLn with the interval of supply gating drive signal with 8 pixels as shown in figure 15 then to first.
If apply as shown in figure 15 analog video data signal to data line DL1 to DLn, then having injected as shown in figure 16 in the pixel cell of LCD panel 410, polarity serves as the basis counter-rotating with 1 in the horizontal direction and serve as the video data signal that reverses in the basis with 2 in vertical direction.
Figure 17 is the oscillogram that imposes on according to the alternative embodiment of the video data of the data line of the liquid crystal indicator of four embodiment of the invention, and Figure 18 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 17.
On the other hand, polarity serves as the analog video data signal of basis counter-rotating with 2 if apply as shown in figure 17 to the data line DL1 to DLn according to the liquid crystal indicator 400 of four embodiment of the invention, and then having injected as shown in figure 18 in the pixel cell of LCD panel 410, polarity serve as to reverse and the identical in vertical direction video data signal of polarity in the basis with 1 in the horizontal direction.
When the liquid crystal indicator according to four embodiment of the invention being carried out the test of super pixel grayscale mode, as shown in Figure 5 all pixel cells have been injected the black video data in advance, with prevent picture quality since video data signal between injection difference and variation.Thereby, can reduce liquid crystal indicator data-driven IC quantity and can not make the display quality variation of this display device.
In liquid crystal indicator according to four embodiment of the invention, pass through said structure, can make the pixel cell that shows as same color in the middle of the corresponding three kinds of colored pixels unit that constitute a pair of adjacent cells pixel be connected to same data line publicly, thereby the quantity of the data-driven IC of costliness can be reduced to conventional liquid crystal indicator shown in Figure 1 half.Therefore, can reduce the manufacturing cost of liquid crystal indicator.
Figure 19 shows the structure according to the liquid crystal indicator of fifth embodiment of the invention.
Liquid crystal indicator according to fifth embodiment of the invention is represented with label 500, in LCD panel 510 being connected of select lines GL, data line DL and pixel cell, it has the structure identical with the liquid crystal indicator 100 to 400 of first to fourth embodiment according to the present invention, therefore omits the detailed description to identical composed component.
With reference to Figure 19, comprise LCD panel 510 according to the liquid crystal indicator 500 of fifth embodiment of the invention, this LCD panel comprises: the m bar select lines GL1 to GLm that along continuous straight runs forms; The n bar data line DL1 to DLn of Xing Chenging vertically, every data line are connected to the adjacent pixel unit that shows as same color on the adjacent pixel unit that shows as different colours on the horizontal line or the horizontal line publicly; Be respectively formed at the TFT in the pixel region that limits by m bar select lines GL1 to GLm and n bar data line DL1 to DLn; And the pixel cell that links to each other with these TFT respectively.
Liquid crystal indicator 500 according to fifth embodiment of the invention also comprises: gate driver 530 is used for supplying the gating drive signal successively to select lines GL1 to GLm; Data driver 520 is used for video data R, the G that will be imported and B and gating drive signal and synchronously is supplied to data line DL1 to DLn; And timing controller 540, be used for external video data R, G and B are changed and arrange, and the video data that obtains is supplied to data driver 520, and the driving of gate driver 530 and data driver 520 is controlled.
Here, data line DL1 to DLn receives from the analog video data signal of data driver 520 outputs by corresponding with it passage 121 respectively.
Be characterised in that the structure of data line DL1 to DLn according to the liquid crystal indicator 500 of fifth embodiment of the invention, they are connected to the adjacent pixel unit that shows as same color on the adjacent pixel unit that shows as different colours on the horizontal line or the horizontal line all publicly.
In more detail, as shown in figure 19, in LCD panel 510, the pixel cell of same color vertically arranges, and R, G and B pixel cell arranged alternate in the horizontal direction.
Be arranged in a plurality of red pixel unit R 11 to Rj1 on first perpendicular line and a plurality of green pixels unit G11 to Gk1 that is arranged on second perpendicular line and be connected to the first data line DL1 publicly.That is to say that a plurality of adjacent pixel unit that show as different colours on horizontal line are connected to a data line DL1 publicly.
Here, thus in the red pixel unit R 11 to Rj1 each with green pixel unit G11 to Gk1 in each all be connected to different select lines GL1 to GLm and be driven.
Although Figure 19 illustrates and the front has described that red pixel unit R 11 to Rj1 is arranged on first perpendicular line and green pixel unit G11 to Gk1 is arranged on second perpendicular line, but this only is a kind of embodiment, and red pixel unit and green pixel unit also can be arranged as transposition.
On the other hand, the a plurality of blue pixel unit B 12 to Bh2 that are arranged in a plurality of blue pixel unit B 11 to Bh1 on the 3rd perpendicular line and are arranged on the sextuple straight line are connected to the second data line DL2 publicly, and this second data line DL2 links to each other with a passage 121 and from its branch.That is to say, show as a plurality of adjacent unit pixel B11 to Bh1 of same color and the data line DL2 that B12 to Bh2 is connected to branch publicly.
As shown in figure 19, adjacent unit pixel B11 to Bh1 and the B12 to Bh2 that shows as same color is spaced apart from each other.
In liquid crystal indicator 500, be spaced apart from each other and a plurality of pixel cells of showing as same color are connected to publicly and link to each other with a passage 121 and from the data line DL2 of its branch according to fifth embodiment of the invention.
Here, be arranged in the blue pixel unit B 11 to Bh1 on the 3rd perpendicular line each be arranged in the sextuple straight line on blue pixel unit B 12 to Bh2 in each all be connected to different select lines GL1 to GLm and be driven thus.
In addition, be arranged in a plurality of red pixel unit R 12 to Rj2 on the 4th perpendicular line and a plurality of green pixels unit G12 to Gk2 that is arranged on the 5th perpendicular line and be connected to the 3rd data line DL3 publicly.
Except the data line of public connection, red pixel unit R 12 to Rj2 and green pixel unit G12 to Gk2 are identical with above-mentioned red pixel unit and green pixel unit on being arranged in first and second perpendicular line in layout and configuration aspects.
The pixel cell that this is equally applicable to be arranged in order.That is to say, show as the adjacent pixel unit that shows as same color on the adjacent pixel unit of different colours or each horizontal line on each horizontal line and be connected to a data line publicly.
In liquid crystal indicator 500 according to fifth embodiment of the invention, as mentioned above, the layout that data line is commonly connected to the pixel cell that shows as different colours and shows as the pixel cell of same color is repetition, thereby the quantity that is configured for the data driver IC of the data driver 520 that a plurality of R, G in LCD panel 5 10 and B pixel cell apply video data can be reduced to conventional liquid crystal indicator half.
The quantity of the data-driven IC of costliness can be reduced to half of conventional liquid crystal indicator according to the liquid crystal indicator 500 of fifth embodiment of the invention, thereby can reduce the manufacturing cost of liquid crystal indicator.
Frame reverse system, row reverse system, a row counter-rotatings reverse system of unifying all can be applicable to drive this liquid crystal indicator 500 according to the liquid crystal indicator 500 of fifth embodiment of the invention.To describe in detail below to the situation of liquid crystal indicator 500 point of application reverse systems to prevent to crosstalk and glimmer according to fifth embodiment of the invention.In this reverse system, the polarity that is infused in the vision signal in the LCD panel 510 serve as basic the counter-rotating with 1 on vertical and horizontal direction.
Figure 20 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of fifth embodiment of the invention, and Figure 21 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 20.
With reference to Figure 19 to Figure 21 driving method according to the liquid crystal indicator of fifth embodiment of the invention is described below.
In liquid crystal indicator 500 according to fifth embodiment of the invention, at a frame in the period, the TFT conducting successively in vertical direction that links to each other with vertically arranged redness (R), green (G) and blueness (B) pixel cell respectively.For this reason, according to the order from the first select lines GL1 to m select lines GLm, GL1 to GLm applies gating drive signal (sweep signal) to m bar select lines.
If apply the first gating drive signal to the first select lines GL1 in a frame period, the pixel cell R11 that on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, links to each other then with the first select lines GL1, B11, R12, R13 ... the TFT conducting.
Afterwards, if apply the second gating drive signal to the second select lines GL2, the pixel cell G11 that links to each other with the second select lines GL2 then, G12, B12 ... the TFT conducting.That is to say, in the pixel cell on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the first gating drive signal that inputs to before the first select lines GL1.
Then, if apply the 3rd gating drive signal to the 3rd select lines GL3, the pixel cell R21 that on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, links to each other then with the 3rd select lines GL3, B21, R22, R23 ... the TFT conducting.
Afterwards, if apply the 4th gating drive signal to the 4th select lines GL4, the pixel cell G21 that links to each other with the 4th select lines GL4 then, G22, B22 ... the TFT conducting.That is to say, in the pixel cell on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the 3rd gating drive signal that inputs to before the 3rd select lines GL3.
Subsequently, if apply the 5th to m gating drive signal to the 5th to m select lines GL5 to GLm respectively, then as mentioned above, being formed at the TFT conducting that each links to each other with each select lines on to the horizontal line between the select lines GL, to drive corresponding pixel cell respectively.
If apply the gating drive signal successively to the m select lines, serve as that the analog video data signal of basis symmetry is supplied to corresponding data line DL1 to DLn with the interval of supply gating drive signal with 2 as shown in figure 20 then to first.
If apply as shown in figure 20 analog video data signal to data line DL1 to DLn, then having injected as shown in figure 21 polarity in the pixel cell of LCD panel 510 serve as the basic video data signal that reverses with 1 on vertical and horizontal direction.
To inject polarity serve as the situation of the basic video data signal that reverses with 1 on vertical and horizontal direction although described in the pixel cell of LCD panel 510 in conjunction with Figure 20 and Figure 21, but also can drive this liquid crystal indicator by any reverse system outside 1 reverse system based on the variation of the video data that imposes on data line.
Liquid crystal indicator according to fifth embodiment of the invention is being carried out super pixel grayscale mode when test, as shown in Figure 5, can prevent picture quality because the injection difference between the video data signal and variation.Thereby, can reduce liquid crystal indicator data-driven IC quantity and can not make the display quality variation of this display device.
Figure 22 shows the structure according to the liquid crystal indicator of sixth embodiment of the invention.
Liquid crystal indicator according to sixth embodiment of the invention is represented with label 600, and its structure is with the difference of the liquid crystal indicator 100 to 500 of first to the 5th embodiment only is according to the present invention: in LCD panel 610, a plurality of adjacent pixel unit that show as same color on every horizontal line are connected to a data line all publicly; And being connected of the pixel cell in select lines and the LCD panel 610 is also different, and described select lines is used to supply gating drive signal (sweep signal) to drive pixel cell.Therefore, omission is to the detailed description of identical composed component.
With reference to Figure 22, comprise LCD panel 610 according to the liquid crystal indicator 600 of sixth embodiment of the invention, this LCD panel comprises: the m bar select lines GL1 to GLm that along continuous straight runs forms; The n bar data line DL1 to DLn of Xing Chenging vertically, every data line are connected to the adjacent unit pixel that shows as same color on the adjacent unit pixel that shows as different colours on the horizontal line or the horizontal line publicly; Be respectively formed at the TFT in the pixel region that limits by m bar select lines GL1 to GLm and n bar data line DL1 to DLn; And the pixel cell that links to each other with these TFT respectively.
Liquid crystal indicator 600 according to sixth embodiment of the invention also comprises: gate driver 630 is used for supplying the gating drive signal successively to select lines GL1 to GLm; Data driver 620 is used for video data R, the G that will be imported and B and gating drive signal and synchronously is supplied to data line DL1 to DLn; And timing controller 640, be used for external video data R, G and B are changed and arrange, and the video data that obtains is supplied to data driver 620, and the driving of gate driver 630 and data driver 620 is controlled.
Be characterised in that the structure of data line DL1 to DLn according to the liquid crystal indicator 600 of sixth embodiment of the invention, they are connected to the adjacent pixel unit that shows as same color on the adjacent pixel unit that shows as different colours on the horizontal line or the horizontal line all publicly.
In more detail, as shown in figure 22, in LCD panel 610, a plurality of pixel cells that show as same color are vertically arranged, and R, G and B pixel cell along continuous straight runs arranged alternate.
The a plurality of blue pixel unit B 12 to Bh2 that are arranged in a plurality of blue pixel unit B 11 to Bh1 on the 3rd perpendicular line and are arranged on the sextuple straight line are connected to the second data line DL2 publicly, and this second data line is connected to a passage 121 and from its branch.That is to say, show as a plurality of adjacent unit pixel B11 to Bh1 of same color and the data line DL2 that B12 to Bh2 is connected to branch on the horizontal line publicly.
As shown in figure 22, adjacent unit pixel B11 to Bh1 and the B12 to Bh2 that shows as same color on horizontal line is spaced apart from each other.
In liquid crystal indicator 600, be spaced apart from each other and a plurality of pixel cells of showing as same color are connected to publicly and link to each other with a passage 121 and from the data line DL2 of its branch according to sixth embodiment of the invention.
Here, be arranged in the blue pixel unit B 11 to Bh1 on the 3rd perpendicular line each be arranged in the sextuple straight line on blue pixel unit B 12 to Bh2 in each link to each other with different select lines GL1 to GLm and be driven thus.
As the front with reference to as described in Figure 19, in the 5th embodiment of the present invention, be arranged on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4 and show as blue pixels unit " B21 " and link to each other, and show as with the pixel cell " B22 " of pixel cell " B21 " same color and link to each other with the 4th select lines GL4 with the 3rd select lines GL3.
What contrast is, in the 6th embodiment of the present invention, be arranged on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4 and show as blue pixels unit " B21 " and link to each other, and show as with the pixel cell " B22 " of pixel cell " B21 " same color and link to each other with the 3rd select lines GL3 with the 4th select lines GL4.
In addition, be arranged on the 4th horizontal line that is formed between the 7th select lines GL7 and the 8th select lines GL8 and show as blue pixels unit " B41 " and link to each other, and show as with the pixel cell " B42 " of pixel cell " B41 " same color and link to each other with the 7th select lines GL7 with the 8th select lines GL8.
That is to say, be arranged in even number horizontal line (the second, the 4th, the 6th ...) go up and show as the blue pixels unit according to the liquid crystal indicator 500 according to fifth embodiment of the invention as mentioned above in different mode link to each other with select lines GL.
This connection difference show as to first to m select lines GL1 to GLm apply the gating drive signal when driving pixel cell with the driving difference in proper order of first to m select lines GL1 to the GLm pixel cell that links to each other.
Can offset in the driving difference between first to m select lines GL1 to the GLm pixel cell that may occur when applying the gating drive signal successively according to the liquid crystal indicator 600 of sixth embodiment of the invention.
As mentioned above, have such data line according to the liquid crystal indicator 600 of sixth embodiment of the invention and arrange that is: a plurality of pixel cells that are arranged on the different vertical line connect publicly.
This layout makes half that the quantity that is configured for the data-driven IC of the data driver 620 that a plurality of R, G in LCD panel 610 and B pixel cell apply video data can be reduced to conventional liquid crystal indicator.The quantity of the data-driven IC of costliness can be reduced to half of conventional liquid crystal indicator according to the liquid crystal indicator 600 of sixth embodiment of the invention, thereby can reduce the manufacturing cost of liquid crystal indicator.
Frame reverse system, row reverse system, a row counter-rotatings reverse system of unifying all can be applicable to drive this liquid crystal indicator 600 according to the liquid crystal indicator 600 of sixth embodiment of the invention.Will be described in detail below to situation according to the liquid crystal indicator 600 point of application reverse systems of sixth embodiment of the invention.In this reverse system, the polarity that is infused in the vision signal in the LCD panel 610 serves as the basis counter-rotating with 1 in the horizontal direction, and serves as the basis counter-rotating with 2 in vertical direction.
Figure 23 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of sixth embodiment of the invention, and Figure 24 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 23.
With reference to Figure 22 to Figure 24 driving method according to the liquid crystal indicator of sixth embodiment of the invention is described below.
In liquid crystal indicator 600 according to sixth embodiment of the invention, at a frame in the period, the TFT conducting successively in vertical direction that links to each other with vertically arranged redness (R), green (G) and blueness (B) pixel cell respectively.For this reason, according to the order from the first select lines GL1 to m select lines GLm, GL1 to GLm applies gating drive signal (sweep signal) to m bar select lines.
If apply the first gating drive signal to the first select lines GL1 in the period at a frame, the pixel cell R11 that on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, links to each other then with the first select lines GL1, B11, R12, R13 ... the TFT conducting.
Afterwards, if apply the second gating drive signal to the second select lines GL2, the pixel cell G11 that links to each other with the second select lines GL2 then, G12, B12 ... the TFT conducting.That is to say, in the pixel cell on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the first gating drive signal that inputs to before the first select lines GL1.
Then, if apply the 3rd gating drive signal to the 3rd select lines GL3, the pixel cell R21 that on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, links to each other then with the 3rd select lines GL3, R22, B22, R23 ... the TFT conducting.
Afterwards, if apply the 4th gating drive signal to the 4th select lines GL4, the pixel cell G21 that links to each other with the 4th select lines GL4 then, B21, G22 ... the TFT conducting.
That is to say, in the pixel cell on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the 3rd gating drive signal that inputs to before the 3rd select lines GL3.
Subsequently, if apply the 5th to m gating drive signal to the 5th to m select lines GL5 to GLm respectively, then as mentioned above, being formed at the TFT conducting that each links to each other with each select lines on to the horizontal line between the select lines GL, to drive corresponding pixel cell respectively.
If apply the gating drive signal to first successively to the m select lines, then analog video data signal as shown in figure 23 is provided to corresponding data line DL1 to DLn with the interval of supply gating drive signal.
If apply as shown in figure 23 analog video data signal to data line DL1 to DLn, then having injected as shown in figure 24 polarity in the pixel cell of LCD panel 610 is basis counter-rotating and serve as the video data signal that reverses in the basis with 2 in vertical direction with 1 in the horizontal direction.
To inject polarity in the pixel cell of LCD panel 610 be basis counter-rotating and serve as the situation of the video data signal that reverses of basis with 2 in vertical direction with 1 in the horizontal direction although described in conjunction with Figure 23 and Figure 24, but also can drive this liquid crystal indicator by any drive system outside the reverse system based on the variation of the video data that imposes on data line.
Liquid crystal indicator according to sixth embodiment of the invention is being carried out super pixel grayscale mode when test, as shown in Figure 5, can prevent picture quality because the injection difference between the video data signal and variation.Thereby, can reduce liquid crystal indicator data-driven IC quantity and can not make the display quality variation of this display device.
Figure 25 shows the structure according to the liquid crystal indicator of seventh embodiment of the invention.
Liquid crystal indicator according to seventh embodiment of the invention is represented with label 700, in LCD panel 710 being connected of select lines GL, data line DL and pixel cell, it has the structure identical with the liquid crystal indicator 100 to 600 of first to the 6th embodiment according to the present invention, therefore omits the detailed description to identical composed component.
With reference to Figure 25, comprise LCD panel 710 according to the liquid crystal indicator 700 of seventh embodiment of the invention, this LCD panel comprises: the m bar select lines GL1 to GLm that along continuous straight runs forms; The n bar data line DL1 to DLn of Xing Chenging vertically, every data line are connected to the adjacent pixel unit that shows as same color on the adjacent pixel unit that shows as different colours on the horizontal line or the horizontal line publicly; Be respectively formed at the TFT in the pixel region that limits by m bar select lines GL1 to GLm and n bar data line DL1 to DLn; And the pixel cell that links to each other with these TFT respectively.
Liquid crystal indicator 700 according to seventh embodiment of the invention also comprises: gate driver 730 is used for supplying the gating drive signal successively to select lines GL1 to GLm; Data driver 720 is used for video data R, the G that will be imported and B and gating drive signal and synchronously is supplied to data line DL1 to DLn; And timing controller 740, be used for external video data R, G and B are changed and arrange, and the video data that obtains is supplied to data driver 720, and the driving of gate driver 730 and data driver 720 is controlled.
Here, data line DL1 to DLn receives from the analog video data signal of data driver 720 outputs by corresponding with it passage 121a to 121d respectively.
Be characterised in that the structure of data line DL1 to DLn according to the liquid crystal indicator 700 of seventh embodiment of the invention, they are connected to the adjacent pixel unit that shows as same color on the adjacent pixel unit that shows as different colours on the horizontal line or the horizontal line all publicly.
In more detail, as shown in figure 25, in LCD panel 710, a plurality of pixel cells that show as same color are vertically arranged, and R, G and B pixel cell along continuous straight runs arranged alternate.
The a plurality of green pixels unit G11 to Gk1 that is arranged in a plurality of red pixel unit R 11 to Rj1 on first perpendicular line and is arranged on second perpendicular line is connected to the first data line DL1 publicly, and this first data line links to each other with first passage 121a and from its branch.That is to say that a plurality of adjacent pixel unit that show as different colours on a horizontal line are connected to same data line DL1 publicly.
Here, thus in the red pixel unit R 11 to Rj1 each with green pixel unit G11 to Gk1 in each all be connected to different select lines GL1 to GLm and be driven.
Although in Figure 25, show and the front has described that red pixel unit R 11 to Rj1 is arranged on first perpendicular line and green pixel unit G11 to Gk1 is arranged on second perpendicular line, but this only is a kind of embodiment, and red pixel unit and green pixel unit also can be arranged as transposition.
On the other hand, the a plurality of blue pixel unit B 12 to Bh2 that are arranged in a plurality of blue pixel unit B 11 to Bh1 on the 3rd perpendicular line and are arranged on the sextuple straight line are connected to the second data line DL2 publicly, and this second data line DL2 links to each other with second channel 121b and from its branch.That is to say that a plurality of adjacent unit pixel B11 to Bh1 and the B12 to Bh2 that show as same color on a horizontal line are connected to same data line DL2 publicly.
As shown in figure 25, adjacent unit pixel B11 to Bh1 and the B12 to Bh2 that shows as same color on a horizontal line is spaced apart from each other.
In liquid crystal indicator 700, be spaced apart from each other and a plurality of pixel cells of showing as same color are connected to publicly and link to each other with second channel 121b and from the data line DL2 of its branch according to seventh embodiment of the invention.
Here, being arranged in each blue pixel unit B 11 to Bh1 on the 3rd perpendicular line all is connected to different select lines GL1 to GLm with each blue pixel unit B 12 to Bh2 on being arranged in the sextuple straight line and is driven thus.
In addition, the a plurality of green pixels unit G12 to Gk2 that is arranged in a plurality of red pixel unit R 12 to Rj2 on the 4th perpendicular line and is arranged on the 5th perpendicular line is connected to the 3rd data line DL3 publicly, and the 3rd data line links to each other with third channel 121c and from its branch.
Except the data line of public connection, red pixel unit R 12 to Rj2 and green pixel unit G12 to Gk2 are identical with above-mentioned red pixel unit and green pixel unit on being arranged in first and second perpendicular line in layout and configuration aspects.
This is equally applicable to the pixel cell of follow-up arrangement.That is to say, show as the adjacent pixel unit that shows as same color on the adjacent pixel unit of different colours or each horizontal line on each horizontal line and be connected to a data line all publicly.
In liquid crystal indicator 700 according to seventh embodiment of the invention, as mentioned above, the layout that data line is connected to the pixel cell that shows as different colours publicly and shows as the pixel cell of same color is repetition, thereby the quantity that is configured for the data driver IC of the data driver 720 that a plurality of R, G in LCD panel 710 and B pixel cell apply video data can be reduced to conventional liquid crystal indicator half.
The quantity of the data-driven IC of costliness can be reduced to half of conventional liquid crystal indicator according to the liquid crystal indicator 700 of seventh embodiment of the invention, thereby can reduce the manufacturing cost of liquid crystal indicator.
In addition, can reduce the video data load to data line to be applied by making each data line branch and it being linked to each other with a plurality of pixel cells according to the liquid crystal indicator 700 of seventh embodiment of the invention.In addition, liquid crystal indicator 700 can be offset to first to m select lines GL1 to GLm successively or the driving difference between the non-pixel cell that may occur when applying the gating drive signal successively.
Frame reverse system, row reverse system, a row counter-rotatings reverse system of unifying all can be applicable to drive this liquid crystal indicator 700 according to the liquid crystal indicator 700 of seventh embodiment of the invention.Will be described in detail below to situation according to the liquid crystal indicator 700 point of application reverse systems of seventh embodiment of the invention.In this reverse system, the polarity that is infused in the vision signal in the LCD panel 710 is basis counter-rotating and serve as to reverse in the basis with 2 in the horizontal direction with 1 in vertical direction.
Figure 26 is the oscillogram that imposes on according to the video data of the data line of the liquid crystal indicator of seventh embodiment of the invention, and Figure 27 shows the change in polarity that is infused in the video data in the LCD panel by video data shown in Figure 26.
With reference to Figure 25 to Figure 27 driving method according to the liquid crystal indicator of seventh embodiment of the invention is described below.
In liquid crystal indicator 700 according to seventh embodiment of the invention, at a frame in the period, the TFT conducting successively in vertical direction that links to each other with vertically arranged redness (R), green (G) and blueness (B) pixel cell respectively.For this reason, according to the order from the first select lines GL1 to m select lines GLm, GL1 to GLm applies gating drive signal (sweep signal) to m bar select lines.
If apply the first gating drive signal to the first select lines GL1 in the period at a frame, the pixel cell R11 that on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, links to each other then with the first select lines GL1, B11, R12, R13 ... the TFT conducting.
Afterwards, if apply the second gating drive signal to the second select lines GL2, the pixel cell G11 that links to each other with the second select lines GL2 then, G12, B12 ... the TFT conducting.That is to say, in the pixel cell on first horizontal line that is formed between the first select lines GL1 and the second select lines GL2, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the first gating drive signal that inputs to before the first select lines GL1.
Then, if apply the 3rd gating drive signal to the 3rd select lines GL3, the pixel cell R21 that on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, links to each other then with the 3rd select lines GL3, B21, R22, R23 ... the TFT conducting.
Afterwards, if apply the 4th gating drive signal to the 4th select lines GL4, the pixel cell G21 that links to each other with the 4th select lines GL4 then, G22, B22 ... the TFT conducting.That is to say, in the pixel cell on second horizontal line that is formed between the 3rd select lines GL3 and the 4th select lines GL4, the TFT conducting of the pixel cell except that the pixel cell of conducting owing to the 3rd gating drive signal that inputs to before the 3rd select lines GL3.
Subsequently, if apply the 5th to m gating drive signal to the 5th to m select lines GL5 to GLm respectively, then as mentioned above, being formed at the TFT conducting that each links to each other with each select lines on to the horizontal line between the select lines GL, to drive corresponding pixel cell respectively.
If apply the gating drive signal to first successively to the m select lines, then analog video data signal as shown in figure 26 is applied in to corresponding data line DL1 to DLn with the interval of supply gating drive signal.
If apply as shown in figure 26 analog video data signal to data line DL1 to DLn, then having injected as shown in figure 27 polarity in the pixel cell of LCD panel 710 is basis counter-rotating and serve as the video data signal that reverses in the basis with 2 in the horizontal direction with 1 in vertical direction.
To inject polarity in the pixel cell of LCD panel 710 be basis counter-rotating and serve as the video data signal that reverses in the basis with 2 in the horizontal direction with 1 in vertical direction although described in conjunction with Figure 26 and Figure 27, but also can drive this liquid crystal indicator by any reverse system outside this reverse system based on the variation of the video data that imposes on data line.
Liquid crystal indicator according to seventh embodiment of the invention is being carried out super pixel grayscale mode when test, as shown in Figure 5, can prevent picture quality because the injection difference between the video data signal and variation.Thereby, can reduce liquid crystal indicator data-driven IC quantity and can not make the display quality variation of this display device, thereby can reduce the manufacturing cost of this display device.
From the above description can be obvious, in liquid crystal indicator according to the present invention, the pixel cell that shows as same color that constitutes in the middle of corresponding three kinds of colored pixels unit of a pair of adjacent cells pixel is connected to same data line publicly, thereby the quantity of the data-driven IC of costliness can be reduced to conventional liquid crystal indicator half.Therefore, can reduce the manufacturing cost of liquid crystal indicator.
In addition, a plurality of pixel cells that show as a plurality of horizontal adjacent unit pixel of same color or show as different colours are connected to a data line publicly, thereby the quantity of the data-driven IC of costliness can be reduced to conventional liquid crystal indicator half.Therefore, can reduce the manufacturing cost of liquid crystal indicator.
It will be apparent to those skilled in the art, can under the situation that does not break away from the spirit or scope of the present invention, carry out various modifications and variations the present invention.Thereby if these are revised and modification falls in the scope of claims and equivalent thereof, then these modifications and modification are also contained in the present invention.
The application requires by reference they to be incorporated into herein, as fully here setting forth on April 13rd, 2007 and the korean patent application No.10-2007-036559 of submission on August 27th, 2007 and the right of priority of 10-2007-086117.

Claims (7)

1. liquid crystal indicator, this liquid crystal indicator comprises:
Gate driver is used for to many select liness supplies drive signals successively;
Data driver is used for respectively to many data line supply video data-signals;
A plurality of pixel cells are respectively formed in the zone that is limited by described select lines and described data line;
First unit picture element, it comprises three pixel cells of different colours in described a plurality of pixel cell, described three pixel cells are connected to the different pieces of information line in the described data line; And
Second unit picture element, itself and described first unit picture element be along the adjacent layout of direction of described data line, and comprise the pixel cell of other three different colours except described three pixel cells of described first unit picture element in described a plurality of pixel cell,
Wherein, described first unit picture element and described second unit picture element are connected to the different select liness in the select lines that is adjacent, and the pixel cell that shows as same color in the pixel cell of described first unit picture element and described second unit picture element is connected to same data line publicly.
2. liquid crystal indicator according to claim 1, wherein, the pixel cell that shows as same color in the described pixel cell is arranged along the direction of described data line.
3. liquid crystal indicator according to claim 1, wherein:
Described first unit picture element links to each other with odd number select lines in the described select lines; And
Described second unit picture element links to each other with even number select lines in the described select lines.
4. liquid crystal indicator according to claim 1, wherein:
Described first unit picture element links to each other with even number select lines in the described select lines; And
Described second unit picture element links to each other with odd number select lines in the described select lines.
5. liquid crystal indicator according to claim 1, this liquid crystal indicator also comprise a plurality of passages that are used to make described data driver and the interconnection of described data line.
6. liquid crystal indicator according to claim 5, wherein, described passage is quantitatively identical with described data line.
7. liquid crystal indicator according to claim 5, wherein:
4i passage in the described passage links to each other with 4i+1 data line in the described data line; And
4i+1 passage in the described passage links to each other with 4i data line in the described data line.
CN2007103004610A 2007-04-13 2007-12-27 Liquid crystal display device Active CN101285950B (en)

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