CN101206362B - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN101206362B CN101206362B CN2007101397278A CN200710139727A CN101206362B CN 101206362 B CN101206362 B CN 101206362B CN 2007101397278 A CN2007101397278 A CN 2007101397278A CN 200710139727 A CN200710139727 A CN 200710139727A CN 101206362 B CN101206362 B CN 101206362B
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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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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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
- G09G3/3614—Control of polarity reversal in general
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
Abstract
A liquid crystal display device includes pixel cells that can be dot-inverted by a row-inversion driving scheme. According to an embodiment of the invention, a liquid crystal display device includes a first data line, a second data line, a first gate line, a second gate line, a third gate line, at least three of the sub-pixels arranged immediately adjacent along one of the data lines and corresponding to different colors to form a pixel, and a driving integrated circuit for sequentially driving the first, second and third gate lines in a horizontal period. During the horizontal period, a first signal supplied to a first sub-pixel of the pixel has a polarity opposite from a second signal supplied to a second sub-pixel of the pixel and the same as a third signal supplied to a third sub-pixel of the pixel.
Description
Technical field
Embodiment of the present invention relates to liquid crystal indicator, more specifically, relates to the liquid crystal indicator that can reduce manufacturing cost and power consumption through the number that reduces data line.
Background technology
Liquid crystal display (LCD) device uses electric field to control the transmittance of liquid crystal molecule, display image thus.Generally speaking, the LCD device be provided with liquid crystal panel (this liquid crystal panel has liquid crystal between two glass substrates), liquid crystal cell matrix, be used for changing respectively the liquid crystal cells signal switching device, be used to the back light unit that drives the driving circuit of liquid crystal panel and be used to import light into liquid crystal panel.
Recently, the number of the number of the signal wire of liquid crystal panel or circuit block is reduced to develop thin and light and cheap liquid crystal indicator.For example; Korean patent application No.10-2003-0039972 discloses a kind of single-chip liquid crystal indicator on glass (on-glass single-chip liquid crystaldisplay device), an integrated drive chips that wherein will be used to drive the LCD panel be installed in the viewing area around to reduce the manufacturing cost of panel size and device.
Single-chip liquid crystal indicator on glass according to prior art has following shortcoming.Colored pixels unit in the unit picture element has vertical strip structure, makes the colored pixels unit arrange along the horizontal direction (gate line direction) of display panels.Each colored pixels unit needs independently data line.Because the size of integrated drive chips increases and increases along with the number of data lines purpose, so only very undersized liquid crystal indicator, for example, resolution is 360 * 160 small size liquid crystal indicator, can utilize single-chip liquid crystal indicator on glass.For obtaining more high-resolution device, single-chip liquid crystal indicator on glass needs extra circuit, for example, selects circuit, reduces the number of data line.When use selecting circuit, cut apart the analog pixel data according to the time in the activation cycle of gate line, then the analog pixel data are provided to many data lines, make the duration of charging of pixel data reduce.Like this, when using the selection circuit, the duration of charging restriction of LCD panel resolution rate subject pixel data.And, for each horizontal line, alternately reversing from the analog pixel data that each passage of integrated drive chips is exported, this has consumed a large amount of power.
Summary of the invention
Therefore, embodiment of the present invention aims to provide a kind of liquid crystal indicator, and this liquid crystal indicator has eliminated basically because the restriction of prior art and one or more problems that shortcoming causes.
A purpose of embodiment of the present invention is to provide a kind of liquid crystal indicator, thereby this liquid crystal indicator can reduce manufacturing cost and power consumption through the number that reduces data line.
Another purpose of embodiment of the present invention is to provide a kind of liquid crystal indicator with picture quality of improvement.
Other features and advantages of the present invention will be set forth in explanation subsequently, and a part of characteristic or advantage become clear according to this explanation, perhaps can know through embodiment of the present invention.Above-mentioned purpose of the present invention can be realized by the structure of in instructions and claims and accompanying drawing, specifically noting and obtain with other advantages.
In order to realize these purposes and other advantages; And according to institute's imbody among this paper and broadly described invention aim; The invention provides a kind of liquid crystal indicator; This liquid crystal indicator comprises: many data lines, and it comprises first data line and second data line that is arranged substantially parallel to each other; Many gate lines, it comprises first grid polar curve, second grid line and the 3rd gate line that is arranged substantially parallel to each other, this gate line and this data line intersect; A plurality of sub-pixels that the intersection of gate line and data line limits, a next-door neighbour at least three subpixels and the data line arranges, and corresponding to various colors, to form pixel; And be used for sequentially driving first, second and the drive integrated circult of the 3rd gate line at horizontal cycle; Wherein during horizontal cycle; First signal that is provided to first sub-pixel of pixel has and is provided to the secondary signal antipole property of second sub-pixel of pixel, and has the identical polarity of the 3rd signal with the 3rd sub-pixel that is provided to pixel.
In another program; A kind of method of driving liquid crystal device is provided, and this liquid crystal indicator has many data lines, many gate lines and a plurality of pixel that is limited the intersection of these data and gate line, and each pixel comprises three subpixels that the next-door neighbour arranges in the data line; This method comprises: during each horizontal cycle of first frame, sequentially drive three gate lines; To the odd data line vision signal of first polarity is provided in first image duration, and to the even data line vision signal of second polarity is provided, wherein in first image duration; In horizontal cycle; And in each pixel, first signal that is provided to first sub-pixel has and is provided to the secondary signal antipole property of second sub-pixel, and has and the identical polarity of the 3rd signal that is provided to the 3rd sub-pixel.
In another program; Liquid crystal indicator comprises m bar gate line; M is the integer greater than 3, and n bar data line, n are the integers greater than 2; And be arranged in a plurality of first color sub-pixels between i gate line and the i+1 gate line, be arranged in a plurality of second color sub-pixels between i+1 gate line and the i+2 gate line and be arranged in a plurality of the 3rd color sub-pixels between i+2 gate line and the i+3 gate line; Wherein, one in the first color sub-pixel and the 3rd color sub-pixel and the 1st～n-1 data line links to each other, and the second color sub-pixel links to each other with the 2nd～n data line.
In another program, liquid crystal indicator comprises m bar gate line, and m is the integer greater than 6; N bar data line; N is the integer greater than 2, and sequentially is arranged in a plurality of first sub-pixels between i gate line and the i+1 gate line, sequentially is arranged in a plurality of second sub-pixels between i+1 gate line and the i+2 gate line; Sequentially be arranged in a plurality of the 3rd sub-pixels between i+2 gate line and the i+3 gate line; Sequentially be arranged in a plurality of the 4th sub-pixels between i+3 gate line and the i+4 gate line, sequentially be arranged in a plurality of the 5th sub-pixels between i+4 gate line and the i+5 gate line, sequentially be arranged in a plurality of the 6th sub-pixels between i+5 gate line and the i+6 gate line; Wherein, One in first sub-pixel, second sub-pixel, the 5th sub-pixel and the 6th sub-pixel and the 1st～n-1 data line links to each other, and the 3rd sub-pixel links to each other with the 2nd～n data line of data line with the 4th sub-pixel, and wherein first sub-pixel and the 4th sub-pixel comprise the first color sub-pixel; Second sub-pixel and the 5th sub-pixel comprise the second color sub-pixel, and the 3rd sub-pixel and the 6th sub-pixel comprise the 3rd color sub-pixel.
In another program; Liquid crystal indicator comprises: liquid crystal panel; This liquid crystal panel has a plurality of pixel cells that in the zone that is limited m+1 bar data line and n bar gate line, form, and these a plurality of pixel cells have three kinds of colors that repeat to arrange in the data line direction and the same color of arranging in the gate line direction; The grid built-in circuit, its gate line that in liquid crystal panel, forms provides gate-on voltage; Drive integrated circult, it is formed in the liquid crystal panel, the driving grid built-in circuit, and provide with the data line to data line and to be unit and to be the vision signal of unit counter-rotating with the frame; And flexible print circuit, its liquid crystal panel is connected to the external drive system.
Should be appreciated that the description of above-mentioned bulking property and following detailed description all are exemplary and illustrative, are intended to further provide the explanation to the present invention for required protection.
Description of drawings
Included accompanying drawing provides further to be understood and is incorporated into the part that this has constituted the application the present invention, and these accompanying drawings show embodiment of the present invention and are used to explain principle of the present invention with instructions.In the accompanying drawings:
Fig. 1 is the synoptic diagram of the liquid crystal indicator of first embodiment of the invention;
Fig. 2 is the schematic block diagram of drive integrated circult shown in Figure 1;
Fig. 3 is by the synoptic diagram of the data-signal of signaling control unit classification shown in Figure 2;
Fig. 4 is the synoptic diagram of drive waveforms that is used for the liquid crystal indicator of first embodiment of the invention;
Fig. 5 is the synoptic diagram of liquid crystal indicator second embodiment of the invention.
Embodiment
To specifically describe preferred implementation of the present invention at present, in the accompanying drawings illustration embodiment.
Fig. 1 is the synoptic diagram of the liquid crystal indicator of first embodiment of the invention.Among Fig. 1, liquid crystal indicator comprises liquid crystal panel 100, and this liquid crystal panel has a plurality of pixel cells 110 that limited the intersection of data line DL and gate lines G L.Pixel cell 110 comprises three kinds of colors along data line direction or vertical direction arranged alternate, and the same color of arranging along gate line or horizontal direction.
Grid built-in circuit 120 is built in the liquid crystal panel 100, is used for driving grid line GL, and drive integrated circult 130 is installed on the liquid crystal panel 100, is used for driving grid built-in circuit 120, and to data line DL vision signal is provided.Flexible print circuit 200 is connected on the display panels 100, is used for liquid crystal panel 100 is connected to external drive system (not shown).
Each pixel cell 110 comprises the thin film transistor (TFT) 112 that links to each other with data line DL with gate lines G L, and the pixel electrode 114 that links to each other with this thin film transistor (TFT) 112.Each thin film transistor (TFT) 112 comprises the grid that links to each other with gate lines G L, the source electrode that links to each other with data line DL and the drain electrode that links to each other with pixel electrode 114.Thin film transistor (TFT) 112 is alternately arranged in its relative both sides along data line DL.That is to say that the thin film transistor (TFT) 112 that is used for two vertical adjacent unit pixel 110 is connected to different data line DL.Correspondingly; The thin film transistor (TFT) 112 that is connected to odd gates line GL2n-1 provides vision signal from the 1st～m data line DL1～DLm to corresponding pixel electrode 114, and the thin film transistor (TFT) 112 that is connected to even number gate lines G L2n provides vision signal from the 2nd～m+1 data line DL2～DLm+1 to corresponding pixel electrode 114.Pixel electrode 114 has the minor face that is parallel to data line DL, and this minor face is shorter than the long limit that is parallel to gate lines G L.Therefore, pixel electrode 114 forms horizontal bar shaped.
At the non-display area of infrabasal plate 102, have with many gate lines G L in each grid built-in circuit 120 that links to each other, and be installed in the drive integrated circult 130 on the non-display area.Upper substrate 104 comprises color filter, public electrode and light shielding layer.Public electrode can depend on the liquid crystal of liquid crystal layer and on infrabasal plate 102, form.Color filter forms and comprises red R color filter, green G color filter and blue B color filter, and they are alternately arranged along the direction of data line DL, and the color filter of same color is arranged along gate lines G L direction.
Public electrode can be formed on the whole upper substrate 104, perhaps forms the linear shape relative with pixel electrode 114, runs through the vertical electric field of liquid crystal layer with formation.Perhaps, public electrode can be parallel to pixel electrode 114 and form on infrabasal plate 102, cross the horizontal component of electric field of liquid crystal layer with formation.
Light shielding layer forms on upper substrate 104, and to cover the zone outside the aperture area, this aperture area has covered pixel electrode 114.The unit picture element that to lay respectively at each red R on red R color filter, green G color filter and the blue B color filter, green G and blue B pixel cell be a coloured image.
Drive integrated circult 130 is installed to the integrated circuit mounting portion at the non-displaypart place of infrabasal plate 102, and this mounting portion has a plurality of i/o pads.Drive integrated circult 130 can comprise a plurality of I/O point of dashing forward, and these prominent naming a person for a particular job are electrically connected to the i/o pads of integrated circuit installation portion office respectively.In addition, drive integrated circult 130 produces gate drive signal and data controlling signal.Through use from synchronizing signal DE, DCLK, Hsync and the Vsync of flexible print circuit 200 at least one of them, drive integrated circult 130 will be divided into first to the 3rd subcycle corresponding to a horizontal cycle of horizontal-drive signal Hsync one-period.And; Drive integrated circult 130 is arranged in red data R, green data G and blue data B corresponding to first to the 3rd subcycle with source data signals Data; And convert this red data R, green data G and blue data B the vision signal of simulation to, and this vision signal is provided to data line DL.
Fig. 2 is the schematic block diagram of drive integrated circult shown in Figure 1.With reference to figure 2, drive integrated circult 130 comprises that transfer of signals unit 310, the first power generation unit 320, clock generating unit 322, reference voltage are provided with the unit 324 and the second power generation unit 326.Drive integrated circult 130 also comprises common electric voltage generation unit 328, signaling control unit 330, control signal generating unit 340, voltage pull-up circuit 350, grayscale voltage generation unit 360 and Date Conversion Unit 380.Transfer of signals unit 310 will be transferred to signaling control unit 330 from source data signals Data and synchronizing signal DE, DCLK, Hsync and the Vsync of flexible print circuit 200 (shown in Figure 1).The driving of other circuit in signaling control unit 330 control signal transfer units 310 and the drive integrated circult 130.
First and second reference voltage VSP and the VSNs of the second power generation unit 326 through using the first power generation unit 320 to produce; Produce and drive the second required power of liquid crystal panel 100; That is, the first and second driving voltage Vdd and Vss, integrated circuit driving voltage Vcc, grid conducting (gate-on) voltage Von and grid are by (gate-off) voltage Voff.
Reference voltage is provided with unit 324 the first and second reference voltage VSP that provide to grayscale voltage generation unit 360 from the first power generation unit 320 and the level of VSN is set.Common electric voltage generation unit 328 produces common electric voltage Vcom, to offer the public electrode of liquid crystal panel 100 through using first and second driving voltage Vdd and the Vss that provide from the passive element of the second power generation unit 326 on flexible printed board 200.Flexible print circuit 200 comprises common electric voltage change unit (not shown), and at least one that is used for through use resistor and capacitor (not shown) changes the common electric voltage Vcom that common electric voltage generation unit 328 is produced.
Fig. 3 is the synoptic diagram by the data-signal of signaling control unit classification shown in Figure 2.With reference to figure 3, signaling control unit 330 is also arranged the source data signals from transfer of signals unit 310, is used to drive liquid crystal panel 100, and the data after Date Conversion Unit 380 provides arrangement.Particularly, signaling control unit 330 will be arranged in red data R, green data G and blue data B from the source data signals of a horizontal cycle of signal transfer unit 310, with corresponding to first to the 3rd subcycle 1ST, 2ST and 3ST.
During the first subcycle 1ST of a horizontal cycle; Red data R after signaling control unit 330 will be arranged is arranged in odd number red data RO1～ROm/2 again; To be provided to odd data line DL1, the DL3...DLm-1 among the 1st～m data line DL1～DLm; And even number red data RE1～REm/2, to be provided to even data line DL2, the DL4...DLm among the 1st～m data line DL1～DLm.Then; During the second subcycle 2ST of this horizontal cycle; Green data G after signaling control unit 330 will be arranged is arranged in odd number green data GO1～GOm/2 again; So that even data line DL2, the DL4...DLm to the 2nd～m+1 data line DL2～DLm+1 to be provided, and even number green data GE1～GEm/2, to be provided to odd data line DL3, the DL5...DLm+1 among the 2nd～m+1 data line DL2～DLm+1.Similarly; During the 3rd subcycle 3ST of this horizontal cycle; Blue data B after signaling control unit 330 will be arranged is arranged in odd number blue data BO1～BOm/2 again; Being provided to odd data line DL1, the DL3...DLm-1 among the 1st～m data line DL1～DLm, and even number blue data BE1～BEm/2, to be provided to even data line DL2, the DL4...DLm among the 1st～m data line DL1～DLm.
The 1st～i clock signal RCLK1～RCLKi that gate drive signal RVst and RCLK1～RCLKi comprise grid start signal RVst and be used for driving grid built-in circuit 120.The 1st～i clock signal RCLK1～RCLKi has the phase place of sequential delays, makes the 1st～i clock signal RCLK1～RCLKi have the transistorized pulse width of conducting membrane in each sub-cycles respectively.Depend on that grid built-in circuit 120, the 1～i clock signal RCLK1～RCLKi can have any one in 2,4,6,8 or 10 phase places.
Through using gate-on voltage Von and the grid cut-off voltage Voff that provides from the second power generation unit 326, draw the gate drive signal RVst that provides from control signal generating unit 340 and the level of RCLK1～RCLKi on the voltage pull-up circuit 350.Gate-on voltage Von is the voltage that is used for the thin film transistor (TFT) 112 of each unit 110 of conducting, and grid cut-off voltage Voff is the voltage that is used for by the thin film transistor (TFT) 112 of each unit 110.The gate drive signal transmission line 140 at the non-display area place through infrabasal plate 102, voltage pull-up circuit 350 provides gate drive signal Vst and CLK1～CLKi after drawing to grid built-in circuit 120.
Grayscale voltage generation unit 360 is cut apart first and second reference voltage VSP and the VSN from the first power generation unit 320, producing a plurality of grayscale voltages, and to Date Conversion Unit 380 this a plurality of grayscale voltages is provided.If source data signals Data has the N position, then these a plurality of grayscale voltages produce 2
NIndividual positive polarity grayscale voltage and 2
NIndividual negative polarity grayscale voltage.
In response to shift signal SS from shift register 381; Latch cicuit 383 latchs the data RGB from the delegation of signaling control unit 330 in order; And, the data RData of the delegation that latchs is provided to D/A conversion circuit 385 according to data output signal DOE from control signal generating unit 340.
Through using a plurality of positive polarity grayscale voltages and the negative polarity grayscale voltage from grayscale voltage generation unit 360, digital/analog converter 385 will convert positive polarity and negative video signal PVS and NVS from the latch data RData that latch units 383 provides to.Digital/analog converter 385 selects a grayscale voltage corresponding to the gray-scale value of latch data RData as positive video signal PVS from these a plurality of positive polarity grayscale voltages, and from these a plurality of negative polarity grayscale voltages, selects a grayscale voltage corresponding to the gray-scale value of latch data RData as negative video signal.
Through the passive element of flexible print circuit 200, use first and second driving voltage Vdd and the Vss, buffer circuit 387 this positive polarity of buffering and negative video signal PVS and NVS from the first power generation unit 320.For example, interior, buffer circuit 387 amplifies this positive polarity and negative video signal PVS and NVS with the load calculation on the data line DL.
According to data polarity signals DP S from control signal generating unit 340; Selected cell 389 is selected from cushioning positive polarity or negative video signal PVS or the NVS that unit 387 provides; And, selected vision signal is provided to data line DL through the 1st～m+1 output channel.For example, according to data polarity signals DP S, be unit with this output channel and be the unit counter-rotating with the frame from the polarity of the vision signal of selected cell 389 output.
Refer again to Fig. 1, grid built-in circuit 120 is formed in the non-display area of infrabasal plate 102 in the process that forms thin film transistor (TFT) 112 together, and grid built-in circuit 120 links to each other with many gate lines G L respectively.In response to provide from drive integrated circult 130 draw after gate drive signal Vst and CLK1～CLKi, grid built-in circuit 120 produces gate-on voltage Von in each subcycle, and the order to gate lines G L this gate-on voltage Von is provided.For example, through a plurality of gate drive signal transmission lines 140 that the non-display area at infrabasal plate 102 forms, drive integrated circult 130 provides gate drive signal Vst and CLK1～CLKi after drawing to grid built-in circuit 120.
Fig. 4 is the synoptic diagram of drive waveforms that is used for the liquid crystal indicator of first embodiment of the invention.In conjunction with Fig. 1, the exemplary driver of the liquid crystal indicator of first embodiment of the invention is described with reference to figure 4.For example, first horizontal cycle is divided into first to the 3rd subcycle, and in these subcycles sequentially exhibit red, green and blue video, show a color video together to mix redness, green and blue video.
First subcycle at first horizontal cycle; For the 1st～m data line DL1～DLm; With gate-on voltage Von is provided synchronously to first grid polar curve GL1; To odd data line DL_odd positive polarity red video signal R+ is provided, and negative polarity red video signal R-is provided to even data line DL_even.Therefore, for the pixel cell in first horizontal line 110, the red video that odd pixel unit 110 shows corresponding to positive polarity red video signal R+, and 110 demonstrations of even pixel unit are corresponding to the red video of negative polarity red video signal R-.
Second subcycle at first horizontal cycle; For the 2nd～m+1 data line DL2～DLm+1; With gate-on voltage Von is provided synchronously to second grid line GL2; To odd data line DL_odd positive polarity video green signal G+ is provided, and negative polarity video green signal G-is provided to even data line DL_even.Therefore, for the pixel cell in second horizontal line 110, the green video that odd pixel unit 110 shows corresponding to negative polarity video green signal G-, and 110 demonstrations of even pixel unit are corresponding to the green video of positive polarity video green signal G+.Like this, in the first and second adjacent horizontal lines of vertical direction on the pixel cell 110 video signal displayed have the polarity that differs from one another.
The 3rd subcycle at first horizontal cycle; For the 1st～m data line DL1～DLm; With gate-on voltage Von is provided synchronously to the 3rd gate lines G L3; To odd data line DL_odd positive polarity blue video signal B+ is provided, and negative polarity blue video signal B-is provided to even data line DL_even.Therefore, for the pixel cell in the 3rd horizontal line 110, the blue video that odd pixel unit 110 shows corresponding to positive polarity blue video signal B+, and 110 demonstrations of even pixel unit are corresponding to the blue video of negative polarity blue video signal B-.Like this, in the second and the 3rd adjacent horizontal line of vertical direction on the pixel cell 110 video signal displayed have the polarity that differs from one another.
Therefore, during first horizontal cycle, sequentially in subcycle exhibit red, green and blue video mixing redness, green and blue video, thereby show a color video together.Similarly, in each horizontal cycle, pixel cell shows a color video with the method identical with above-mentioned first horizontal cycle.Then, at next frame, as stated, the reversal of poles of vision signal.
Correspondingly; Because the thin film transistor (TFT) 112 on each pixel cell 110, shows with a counter-rotating type polarity pattern so be provided to the vision signal with row counter-rotatings type polarity pattern of liquid crystal panel 100 from drive integrated circult 130 in its relative both sides arranged alternate along data line DL.
Fig. 5 is the synoptic diagram of liquid crystal indicator second embodiment of the invention.As shown in Figure 5, the liquid crystal indicator of second embodiment is similar to first embodiment, and just the layout of each pixel cell 110 is different.Therefore, the following layout that will concentrate on each pixel cell 110 to the explanation of second embodiment.Other parts of liquid crystal indicator second embodiment of the invention are identical with the counterpart of aforesaid first embodiment.
As shown in Figure 5, alternately be connected among this adjacent data line DL along per two pixel cells 110 of arranging in its relative both sides at adjacent data line DL.For example, each pixel cell 110 that is connected to 4k-3 (k is an integer) gate lines G L4k-3 is connected to the next-door neighbour's in left side data line; And each pixel cell 110 that is connected to 4k-2 gate lines G L4k-2 is connected to the next-door neighbour's in left side data line; On the other hand, each pixel cell 110 that is connected to 4k-1 gate lines G L4k-1 is connected to the next-door neighbour's on right side data line; And each pixel cell 110 that is connected to 4k gate lines G L4k is connected to the next-door neighbour's on right side data line.
Provide from the vision signal of integrated circuit 130 outputs to the data line that links to each other with the respective pixel unit.At this moment, the polarity of vision signal is unit with the data line and is unit counter-rotating with at least one frame.Correspondingly; Because in its relative both sides arranged alternate, the vision signal with row counter-rotating type polarity pattern that is provided to liquid crystal panel 100 from drive integrated circult 130 shows with vertical 2 counter-rotating type polarity patterns per two thin film transistor (TFT)s 112 that are used for each pixel cell 110 along data line.At this moment, the polarity of the vision signal of 2 counter-rotating type polarity patterns is unit with per two pixel cells and is the unit counter-rotating with the data line.
Second embodiment of the invention, the vision signal that drive integrated circult 130 provides shows on liquid crystal panel 100 with vertical 2 counter-rotating types, thereby has improved picture quality through anti-stop flicker defective.And second embodiment of the invention, the polarity of the vision signal that drive integrated circult 130 provides is the unit counter-rotating with at least one frame, thereby has increased the duration of charging of each pixel cell 110 and prevented video signal delay.
As stated, liquid crystal indicator is according to the embodiment of the present invention formed the unit picture element of the pixel cell with horizontal strip structure and is arranged in vertical direction, makes the decreased number 1/3rd of data line thus.Therefore, except being used for undersized liquid crystal indicator, liquid crystal indicator according to the embodiment of the present invention can also be used for large-sized liquid crystal indicator.
As stated, liquid crystal indicator according to the embodiment of the present invention, each on each pixel cell 110 or two thin film transistor (TFT)s 112 are alternately arranged in its relative both sides along data line DL.This is not limited to above-mentioned explanation.For example, per three thin film transistor (TFT)s 112 that are used for each pixel cell 110 of arranging in its relative both sides along adjacent data line DL can alternately be connected to the data line of this adjacent data line DL.
Therefore, according to the embodiment of the present invention liquid crystal indicator has following advantage.At first, use a drive integrated circult that is built in the liquid crystal panel to drive liquid crystal panel, the thickness that this has reduced unit cost and has reduced liquid crystal indicator.Secondly, be unit with the data line and be the polarity of unit counter-rotating vision signal that this can realize the reduction of power consumption with the frame.The 3rd, the change in polarity of minimizing vision signal, this provides enough vision signal charge cycles and has improved picture quality.The 4th, the data line number is reduced up to 1/3rd, except that can be used for the small size liquid crystal indicator, can also be used for the large scale liquid crystal display device thus.The 5th, the vision signal with row counter-rotatings type polarity pattern shows with vertical 2 counter-rotating types, thus through preventing that the defective such as a flicker from having improved picture quality.The 6th, the polarity of the vision signal that provides from drive integrated circult is the unit counter-rotating with at least one frame, thereby has increased the duration of charging of each pixel cell 110, and prevents the delay of vision signal, has improved picture quality thus.
And according to an embodiment of the invention, thereby liquid crystal indicator drives wherein pixel electrode is carried out a counter-rotating to go inversion scheme.For example, based on the layout according to the pixel cell of an embodiment of the invention, liquid crystal indicator drives to go inversion scheme, thereby obtains the effect of some inversion driving schemes.Perhaps, based on the layout according to the pixel cell of another embodiment of the present invention, liquid crystal indicator drives to go inversion scheme, thereby obtains the effect of 2 inversion driving schemes.
In addition, only use a drive integrated circult to drive liquid crystal panel, this has reduced the size of flexible print circuit, and has reduced the unit cost of flexible print circuit.And the gate drivers that is built in the driving grid line in the liquid crystal panel makes and need not to use gate drivers integrated circuit, grid flexible print circuit and gate pcb.And, only utilizing liquid crystal panel manufacturing process, drive integrated circult mounting process and flexible print circuit to connect technology and make liquid crystal indicator, this has realized the manufacturing process of simplifying, and has reduced ratio of defects thus.
It will be apparent to one skilled in the art that and in comprising the liquid crystal indicator of embodiment of the present invention, to make multiple modification and variation under the situation that does not depart from the spirit or scope of the present invention.Therefore, the present invention is intended to contain to these modifications of the present invention and variation, as long as these modifications and variation fall in the scope of appended claim and equivalent thereof.
The application requires the right of priority of korean patent application No.10-2006-0130763 that submitted on Dec 20th, 2006 and the korean patent application No.10-2007-0038226 that submitted on April 19th, 2007, incorporates its content by reference at this.
Claims (5)
1. liquid crystal indicator, this liquid crystal indicator comprises:
Liquid crystal panel, it has a plurality of pixel cells that in the zone that is limited m+1 bar data line and n bar gate line, form, and this pixel cell has at three kinds of colors that repeat to arrange on the data line direction and the same color of on the gate line direction, arranging;
The grid built-in circuit, its gate line that in liquid crystal panel, forms provides gate-on voltage;
Drive integrated circult, it is formed in the liquid crystal panel, the driving grid built-in circuit, and provide with the data line to data line and to be unit and to be the vision signal of unit counter-rotating with the frame; And
Flexible print circuit, it is connected to the external drive system with this liquid crystal panel,
Wherein, per two pixel cells alternately are connected to adjacent data line,
Each pixel cell that is connected to the 4k-3 gate line is connected to the next-door neighbour's of first side data line, and wherein k is 1～n/4;
Each pixel cell that is connected to the 4k-2 gate line is connected to the next-door neighbour's of said first side data line;
Each pixel cell that is connected to the 4k-1 gate line is connected to the next-door neighbour's of second side data line; And
Each pixel cell that is connected to the 4k gate line is connected to the next-door neighbour's of said second side data line,
Wherein drive integrated circult comprises:
The transfer of signals unit, it is used to pass on and synchronous data-signal from drive system;
The first power generation unit, it is used to produce first power;
The second power generation unit, it is used to use this first power to produce second power;
Clock generating unit, it is used to produce the clock that drives this first power generation unit and this second power generation unit;
The common electric voltage generation unit, it is used to use this second power, produces the common electric voltage that is applied to public electrode;
Signaling control unit, it is used to arrange from the data-signal of transfer of signals unit and controls this drive integrated circult;
Control signal generating unit, it is used to use the synchronizing signal from signaling control unit, produces data controlling signal and gate drive signal;
Pull-up circuit, it is used to use the level that draws gate drive signal on this second power, and to the grid built-in circuit gate drive signal after drawing is provided;
The grayscale voltage generation unit, it is used to use this first power to produce a plurality of grayscale voltages; And
Date Conversion Unit, it is used for using these a plurality of grayscale voltages, will convert vision signal to from the data-signal after the arrangement of signal control module,
Wherein flexible print circuit comprises passive element, this passive element have resistor, capacitor and inductor at least one of them, first power that produces from the first power generation unit with biasing or the optional function that drive integrated circult is set,
Wherein the common electric voltage generation unit uses and produces common electric voltage through this passive element from second power that the second power generation unit provides, and this passive element is positioned on the outside flexible print circuit of drive integrated circult,
Wherein in first subcycle of a horizontal cycle, the red data after signaling control unit will be arranged is rearranged for odd number red data that will offer the odd data line and the even number red data that will offer the even data line,
In second subcycle of this horizontal cycle, the green data after signaling control unit will be arranged is rearranged for odd number green data that will offer the odd data line and the even number green data that will offer the even data line, and
In the 3rd subcycle of this horizontal cycle, the blue data after signaling control unit will be arranged is rearranged for odd number blue data that will offer the odd data line and the even number blue data that will offer the even data line.
2. the described device of claim 1, wherein each pixel cell has the minor face parallel with data line, and this minor face is shorter than the long limit that is parallel to gate line.
3. the described device of claim 1, wherein Date Conversion Unit comprises:
Shift register, it produces shift signal;
Latch units, it latchs the data-signal after the arrangement according to this shift signal;
Digital/analog converter, it uses a plurality of grayscale voltages, converts latched data to positive polarity and negative video signal;
Buffer cell, its this positive polarity of buffering and negative video signal; And
Selected cell, it selects one of positive polarity and negative video signal according to the data polarity signal from control signal generating unit, and to data line selected vision signal is provided through a plurality of output channels.
4. the described device of claim 3, wherein control signal generating unit is unit with each output channel and is that unit produces the data polarity signal with at least one frame, with the polarity of counter-rotating from the vision signal of selected cell output.
5. the described device of claim 1, wherein flexible print circuit comprises the common electric voltage change unit, this common electric voltage change unit have resistor and capacitor at least one of them to change common electric voltage.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20060130763 | 2006-12-20 | ||
| KR10-2006-0130763 | 2006-12-20 | ||
| KR1020060130763 | 2006-12-20 | ||
| KR10-2007-0038226 | 2007-04-19 | ||
| KR1020070038226 | 2007-04-19 | ||
| KR1020070038226A KR101264719B1 (en) | 2006-12-20 | 2007-04-19 | Liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101206362A CN101206362A (en) | 2008-06-25 |
| CN101206362B true CN101206362B (en) | 2012-07-04 |
Family
ID=39566678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101397278A Expired - Fee Related CN101206362B (en) | 2006-12-20 | 2007-07-27 | Liquid crystal display device |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101264719B1 (en) |
| CN (1) | CN101206362B (en) |
| TW (1) | TWI375211B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101341906B1 (en) * | 2008-12-23 | 2013-12-13 | 엘지디스플레이 주식회사 | Driving circuit for liquid crystal display device and method for driving the same |
| TWI409780B (en) | 2009-01-22 | 2013-09-21 | Chunghwa Picture Tubes Ltd | Liquid crystal displays capable of increasing charge time and methods of driving the same |
| CN101826311B (en) * | 2009-03-06 | 2012-08-29 | 华映视讯（吴江）有限公司 | LCD device capable of prolonging charging time and related driving method thereof |
| TWI407400B (en) * | 2009-09-14 | 2013-09-01 | Au Optronics Corp | Liquid crystal display, flat panel display and gate driving method thereof |
| CN102707526B (en) * | 2012-06-13 | 2015-09-02 | 深圳市华星光电技术有限公司 | A kind of display panels |
| CN103293809B (en) * | 2013-05-28 | 2015-09-30 | 深圳市华星光电技术有限公司 | Anti-colour cast display panel |
| CN104298041B (en) * | 2014-11-10 | 2017-04-26 | 深圳市华星光电技术有限公司 | Array substrate, liquid crystal display panel and liquid crystal display |
| CN105388674B (en) * | 2015-12-02 | 2018-09-18 | 深圳市华星光电技术有限公司 | array substrate and liquid crystal display device |
| CN105427819B (en) * | 2015-12-24 | 2017-06-27 | 深圳市华星光电技术有限公司 | Raster data model framework and its array base palte |
| CN105425491A (en) * | 2016-01-05 | 2016-03-23 | 重庆京东方光电科技有限公司 | Double-gate type pixel structure, display panel and display device |
| KR20170133556A (en) * | 2016-05-25 | 2017-12-06 | 삼성디스플레이 주식회사 | Display device |
| KR102511559B1 (en) * | 2018-01-26 | 2023-03-16 | 엘지디스플레이 주식회사 | Liquid crystal display, contraller and driving method thereof |
| CN108803104A (en) * | 2018-05-31 | 2018-11-13 | 深圳市华星光电半导体显示技术有限公司 | A kind of display device |
| CN109920389B (en) * | 2019-04-29 | 2021-08-31 | 上海天马微电子有限公司 | Display panel, driving method thereof and display device |
| CN110459187B (en) * | 2019-08-15 | 2021-08-06 | 京东方科技集团股份有限公司 | Driving method and driving device of transparent display and display device |
| CN111312192A (en) * | 2020-04-02 | 2020-06-19 | 深圳市华星光电半导体显示技术有限公司 | Drive circuit and liquid crystal display |
| CN112086077A (en) * | 2020-09-17 | 2020-12-15 | Tcl华星光电技术有限公司 | Array substrate and display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1338719A (en) * | 2000-07-18 | 2002-03-06 | 索尼公司 | Display device and drive method thereof and portable terminal apparatus |
| CN1561469A (en) * | 2001-11-15 | 2005-01-05 | 三星电子株式会社 | Liquid crystal display |
-
2007
- 2007-04-19 KR KR1020070038226A patent/KR101264719B1/en not_active IP Right Cessation
- 2007-07-27 CN CN2007101397278A patent/CN101206362B/en not_active Expired - Fee Related
- 2007-07-27 TW TW096127661A patent/TWI375211B/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1338719A (en) * | 2000-07-18 | 2002-03-06 | 索尼公司 | Display device and drive method thereof and portable terminal apparatus |
| CN1561469A (en) * | 2001-11-15 | 2005-01-05 | 三星电子株式会社 | Liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200828251A (en) | 2008-07-01 |
| TWI375211B (en) | 2012-10-21 |
| KR101264719B1 (en) | 2013-05-15 |
| CN101206362A (en) | 2008-06-25 |
| KR20080058131A (en) | 2008-06-25 |
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