CN100516996C - Liquid crystal display device and method for driving the same - Google Patents
Liquid crystal display device and method for driving the same Download PDFInfo
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- CN100516996C CN100516996C CNB2006101407222A CN200610140722A CN100516996C CN 100516996 C CN100516996 C CN 100516996C CN B2006101407222 A CNB2006101407222 A CN B2006101407222A CN 200610140722 A CN200610140722 A CN 200610140722A CN 100516996 C CN100516996 C CN 100516996C
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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
- G09G3/3685—Details of drivers for data electrodes
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
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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
- G09G3/03—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays
- G09G3/035—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays for flexible display surfaces
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0202—Addressing of scan or signal lines
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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
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
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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
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0492—Change of orientation of the displayed image, e.g. upside-down, mirrored
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Abstract
A liquid crystal display device and a method for driving the same are disclosed. The method includes storing image data of one frame in a memory, selecting an output order of the data stored in the memory and outputting the data in the selected output order in accordance with a selection signal, sequentially latching the output data from the memory in a plurality of data ICs to drive a plurality of data lines; and sequentially driving a plurality of gate ICs to drive a plurality of gate lines.
Description
The application requires to enjoy the rights and interests of the korean patent application of submitting on March 30th, 2006 10-2006-28980 number and the korean patent application of submitting on August 28th, 2006 10-2006-81518 number, is incorporated herein its full content as a reference.
Technical field
The present invention relates to a kind of liquid crystal display (LCD) device, more specifically, relate to a kind of LCD device and driving method thereof that reversible image shows that be used to produce.
Background technology
Recently, researched and developed with comparing and had smaller szie and lighter weight multiple flat-panel monitor based on general cathode-ray tube display.The example of flat-panel monitor comprises LCD (LCD), Field Emission Display (FED), plasma scope (PDP) and light emitting diode (LED) display.
In flat-panel monitor, because the resolution of LCD excellence, color demonstration and picture quality, it is mainly used in notebook computer, desk-top computer and portable terminal.
LCD is by utilizing the light transmission rate display image of electric field controls liquid crystal cells.LCD comprises LCD panel with liquid crystal cells, to LCD panel backlight unit radiating light, and the driving circuit that is used to drive liquid crystal cells.
Driving circuit comprises the integrated circuit (IC) that is used to drive liquid crystal cells.According to the technology that is used to connect IC and LCD panel, LCD is divided into chip (chip on glass, COG) type on (chip on film) type of chip on carrier band encapsulation type, the film or the glass.
Fig. 1 shows prior art COG type LCD device.
With reference to Fig. 1, prior art COG type LCD device comprises LCD panel 10, and it provides the pixel cell P that is formed on the pixel region that is limited by many grid line GL and data line DL intersection; The data I C 20 of first side that directly is arranged on LCD panel 10 is to offer data-signal data line DL; First flexible print circuit (FPC) 30 is to offer this data-signal each data I C 20; The grid IC 40 that is set directly at LCD panel second side is to offer grid line GL with the gate pulse signal; And the 2nd FPC 50 the grid drive signal is offered each grid IC 40.
First and second FPC that are used for driving the data I C of prior art COG type LCD device and grid IC are very expensive, and this cost has increased the whole cost of LCD device.
Researched and developed prior art LCD device so that the scheme that reduces cost to be provided with single FPC.Single FPC is connected to the first data I C and the second grid IC to reduce manufacturing cost.To describe the prior art LCD device that adopts single FPC in detail with reference to Fig. 2 A and Fig. 2 B.
With reference to Fig. 2 A and Fig. 2 B, the prior art LCD device with single FPC comprises having the LCD panel 110 that is formed on the pixel cell P in the pixel region that the intersection by many grid lines and data line GL and DL limits; Driving data IC 120a is to the control panel 150 of 120d and grid IC 140a and 140b; Be connected the FPC 130 between LCD panel 110 and the control panel 150; Be set directly on first side of LCD panel 110 and cascade with a plurality of data I C 120a of data-signal being provided to data line DL to 120d; And be set directly on second side of LCD panel 110 and cascade the gate pulse signal is provided to a plurality of grid IC 140a and the 140b of grid line GL.
The first area comprises data COG zone, data I C 120a is set to 120d on it; (line on glass, line 124 LOG) make data I C 120a to 120d and FPC130 cascade as data line in wiring on many glass; And a plurality of data pads, data I C 120a is connected with data line DL to 120d.
Second area comprises grid COG district, and grid IC 140 to 140b is set on it; And a plurality of grid LOG144, its with grid IC 140a and 140b cascade be connected to FPC 130.
Data I C 120a is arranged in the data COG district and via data LOG 124 to 120d and in series is connected with FPC 130.In addition, data I C 120a latchs the numerical data of cascade successively and this digital data signal that latchs is converted to analog data signal to offer data line DL to 120d.
The first data I C 120a provides data drive signal, and this data drive signal comprises data-signal, data controlling signal and the data-driven power that also passes through the first data LOG 124 that is connected with FPC 130 from control panel 150.The second data I C 120b provides data drive signal, this data drive signal comprises data-signal, data controlling signal and the data-driven power from control panel 150 and process FPC 130, the first data LOG 124, the first data I C 120a and the second data LOG 124.
Grid IC 140a and 140b provide the grid drive signal, and this grid drive signal comprises grid-control system signal and the grid driving power that also passes through the grid LOG 144 that is connected with FPC 130 from control panel 150.Grid IC 140a and 140b provide gate pulse, and it is in response to grid-control system signal driven grid line GL in turn.
As mentioned above, the LCD device of prior art provides single FPC, and it is connected to 120d cascade ground with data I C 120a and is connected with 140b cascade ground with grid IC 140a.In the LCD of this prior art device, depend on the main perspective situation, picture quality can change in all directions.
For example, be used for the LCD device of notebook computer, main perspective is along some direction around a predetermined angular of the direction of normal to screen from screen top.On the other hand, be used for the public place or such as the LCD device of the public transport of motorbus, train and aircraft, main perspective be along below display a bit around direction of a predetermined angular of the direction of normal to screen.In addition, be used for being installed in the LCD device of the audio system between driver's seat and next-door neighbour driver's the seat or be used for the LCD device that multiple information shows, this main perspective be along from the left side of display or the right side around the direction of a predetermined angular of the direction of normal to screen.
Correspondingly, prior art LCD device is manufactured to according to operating position and has reversible function on all direction.
Describe with reference to Fig. 2 A and a kind ofly to be used to drive the single FPC LCD device of prior art on the image display of LCD panel 110, to show the method for the screen that can reverse.
For the reverse drive screen, first data controlling signal, promptly the first beginning pulse SSP1 inputs to the 4th data I C 120d (the most last data I C) by the first data controlling signal line 126a that is connected with the most last data I C 120d, and the data-signal that inputs to data LOG 124 latchs in the 4th data I C 120d with the backward since first data-signal.Herein, the first control signal wire 126a connects between FPC 130 and the 4th data I C 120d by data LOG 124 and the first data I C 120a to the, three data I C 120c.
Then, in case all be latched corresponding to the data-signal of the 4th data I C 120d, the 4th data I C120d produces carry signal.This carry signal inputs to the 3rd data I C120c by carry out signal line 125 subsequently.Then, thus the 3rd data I C 120c activates by carry signal and latchs the data-signal that the backward that begins with next data-signal from the data-signal that is latched in the 4th data I C 120d inputs to data LOG 124.
In this way, all latch corresponding to horizontal data with backward from the 4th data I C 120d to the first data I C120a.This latched data is converted to analog data signal simultaneously, and the analog data signal of this conversion is exported to data line DL.Repeat above-described backward latch operation for each horizontal line, thereby and this latched data repeatedly be converted to analog data signal and export data line DL to.
In addition, for reverse drive LCD panel, first grid initial pulse GSP1 inputs to the second grid IC 140b (the most last grid IC) by first grid control signal wire 127a.First grid control signal wire 127a connects between the FPC 130 and the second grid IC 140b by grid LOG 144 and first grid IC 140a.The second grid IC 140b and first grid IC 140a drive with backward in response to first grid initial pulse GSP1.Therefore, grid line drives with the backward from the most last grid line to first grid line.
As mentioned above, with backward latch data and this latch data is offered data line DL, and grid IC 140a and 140b be with the backward driven grid line to 120d for data I C 120a, thereby LCD panel 110 shows the screen of counter-rotating.
A kind of single FPC LCD device of prior art that drives will be described on LCD panel 110, to show the method for the standard screen opposite with reference to Fig. 2 B with the counter-rotating screen.
At first, when second data controlling signal, promptly, when the second initial pulse SSP2 inputed to the first data I C 120a by the second data controlling signal line 126b, this data-signal that inputs to data LOG 124 latched in the first data I C 120a to the, four data I C 120d with the positive sequence since first data-signal.
In this way, all be latched among the first data I C 120a to the, the four data I C 120d corresponding to horizontal data with positive sequence.This latched data is converted to analog data signal simultaneously, and the analog data signal of this conversion outputs to data line DL.Repeat the forward latch operation of the first data I C120a to the, four data I C 120d described above for horizontal line.For each horizontal line, the signal that this latch data repeatedly is converted to analog data signal and this conversion outputs to data line DL.
In response to the second grid initial pulse GSP2 that offers first grid IC 140a by the second grid-control system signal wire 127b, grid IC 140 and 140b are driven to the most last grid line from first grid line successively.
As mentioned above, with positive sequence latch data and this latch data is offered data line DL, and grid IC 140a and 140b be with the positive sequence driven grid line to 120d for data I C 120a, thus the screen of LCD panel 110 display standards.
Yet, the first data controlling signal line 126a is longer than the second data controlling signal line 126b, wherein import data drive signal to show the counter-rotating screen shown in Fig. 2 A by this first data controlling signal line 126a, data controlling signal inputs to this second data controlling signal line 126b to show the standard screen shown in Fig. 2 B.The length that the first data controlling signal line 126a increases causes line resistance to increase, and causes signal delay thus so that produces the image display defect.
Summary of the invention
Correspondingly, the present invention relates to a kind of liquid crystal display (LCD) device and driving method thereof, it has been eliminated basically because the restriction of prior art and the not enough one or more problems that cause.
An advantage of the invention is provides a kind of LCD device and driving method thereof, and wherein standard screen and counter-rotating screen are not presented in the image demonstration with having signal delay.
To address other advantage of the present invention and feature in the following description, and the another part in these feature and advantage can obtain obviously from these explanations, or obtain by practice of the present invention.Can realize and obtain these and other advantages of the present invention by the structure that particularly points out in explanatory note and claim and the accompanying drawing.
In order to realize these and other advantage of the present invention also according to the object of the invention being described with overview ground particularly herein, a kind of LCD device comprises the LCD panel that provides the pixel region that is limited by many grid lines and many data lines intersection; Data-signal is offered the data driver of data line; Gate signal is offered the gate driver of grid line; And time schedule controller, it comprises the field of storer with storing image data, thereby the output of image memory data signal order is selected between the generation of standard screen on the LCD panel and counter-rotating screen to offer data driver in time schedule controller control data driver and gate driver and the selection memory.
Another aspect of the present invention, a kind of method that is used for driving the LCD device are included in storer storage one frame image data; If select the screen of signal indication counter-rotating, export the data that are stored in the storer with the order opposite with the data of previous input; In a plurality of data I C, latch output data successively to drive many data lines; And drive a plurality of grid IC successively to drive many grid lines.
Another aspect of the present invention, a kind of method that is used for driving the LCD device are included in storer storage one frame image data; Select the output order of the storage data in this storer and according to the output order output data of selecting signal to select; In a plurality of data I C, latch output data from storer successively to drive many data lines; And drive a plurality of grid IC successively to drive many grid lines.
Be to be understood that the above generality that the present invention is carried out is described and following detailed description all is exemplary and indicative, it is intended to provide further explanation to claimed invention.
Description of drawings
Accompanying drawing provides further understanding of the present invention, and it is included in the instructions and constitutes the part of instructions, embodiments of the present invention is described and is used from explanation principle of the present invention with instructions one.
In the accompanying drawing:
Fig. 1 shows the synoptic diagram of chip on the prior art glass (COG) type liquid crystal display (LCD) device;
Fig. 2 A and 2B show the synoptic diagram of the prior art LCD device with single flexible P.e.c. (FPC);
Fig. 3 shows the synoptic diagram of the LCD device with single FPC according to the embodiment of the present invention; And
Fig. 4 shows the block scheme of time schedule controller according to the embodiment of the present invention.
Embodiment
Example is with reference to the accompanying drawings described embodiments of the present invention in detail.
Fig. 3 shows the liquid crystal display with single flexible P.e.c. (FPC) (LCD) device according to the embodiment of the present invention.
As shown in Figure 3, LCD device according to the embodiment of the present invention provides the data integrated circuit (IC) of single FPC and cascade.This LCD device comprises LCD panel 210, and it has the pixel cell P on each zone that is limited by many grid line GL and data line DL intersection; A plurality of data I C 220a are to 220d, its directly be arranged on first side of LCD panel 210 and successively cascade data-signal is offered data line DL; A plurality of grid IC 240a and 240b, its directly be arranged on LCD panel 210 second side and successively cascade so that the gate pulse signal is offered grid line GL; Control panel 250 is to produce data and grid drive signal to drive a plurality of data I C 220a respectively to 220b and a plurality of grid IC 240a and 240b; The FPC 230 that between LCD panel 210 and control panel 20, connects; The data controlling signal line 260 that between the FPC 230 and the first data I C220a, connects; And the grid-control system signal wire 270 that between FPC 230 and first grid IC 240a, connects.
LCD panel 210 comprises toward each other and mutual bonding infrabasal plate 202 and upper substrate 204.Liquid crystal layer is formed between infrabasal plate 202 and the upper substrate 204, and forms wadding to keep uniform gap between infrabasal plate 202 and upper substrate 204.
Upper substrate 204 comprises color filter, public electrode and black matrix.This public electrode alternately is formed on the infrabasal plate 202.
Infrabasal plate 202 comprises many data lines DL; Many grid line GL that intersect with data line DL; Be formed on the thin film transistor (TFT) of the pixel region that limits by grid line and data line intersection; And the pixel cell that is connected with thin film transistor (TFT).This thin film transistor (TFT) is provided to pixel cell with data drive signal from data line DL in response to the gate pulse signal from grid line GL.Each pixel cell comprises respect to one another and accompanies the public electrode and the pixel electrode of liquid crystal layer therein.Therefore, this pixel cell can be used as liquid crystal capacitor.This pixel cell comprises holding capacitor, and the data-signal that its maintenance is applied on this liquid crystal capacitor is applied on this liquid crystal capacitor up to next data-signal.
First area on first side of infrabasal plate 202 comprises the data pads part, and the second area of second side of infrabasal plate 202 comprises the grid pad portion.This data pads partly is connected to every data lines DL while grid pad portion and is connected to every grid line GL.
The first area also comprises chip on the data glass (COG) zone, and it is provided with data I C 220a to 220d; The line that many single data glass is reached the standard grade (LOG) 224, it makes data I C 220a to 220d and FPC 230 cascades; Data controlling signal line 260, it connects between the FPC 230 and the first data I C 220a source initial pulse SSP is offered the first data I C 220a; And a plurality of data pads, it makes data I C 220a connect data line DL to 220d.Data LOG 224 is forming between the FPC 230 and the first data I C 220a and between each of the second data I C 220b to the, four data I C 220d respectively.Data LOG 224 comprises many single data transmission line of transmission of digital data; Many control signal transmission lines, the data controlling signal of its transmission except the initial pulse SSP of source; And many power lines of transmission data-driven power.
Second area comprises grid COG zone, and it is provided with grid IC 240a and 240b; A plurality of grid LOG244, it makes grid IC 240 to 240b and FPC 230 cascades; Grid-control system signal wire 270, it is connected so that grid initial pulse GSP to be provided between FPC 230 and first grid IC 240a; And a plurality of grid pads, it makes grid IC 240a connect grid line GL to 240d.Grid LOG 244 be respectively formed between FPC 230 and the first grid IC240a and the first grid IC 240a and the second grid IC 240b between.Grid LOG 244 comprises many control signal transmission lines, the grid-control system signal of its transmission except grid initial pulse GSP; And many power lines of transmission grid driving power.
FPC 230 comprises connector, and its side from FPC 230 is extended to connect the connector 256 on the control panel 250 and to be connected to data LOG 224 and a plurality of o pads of grid LOG 244.FPC 230 is provided to data LOG 224 and data controlling signal line 260 with numerical data, data controlling signal and data-driven power from control panel 250, and grid-control system signal and grid driving power are provided to grid LOG 244 and grid-control system signal wire 270.
Control panel 250 comprise time schedule controller 252 with driving data IC 220a to 220d and grid IC 240a and 240b, produce the power generator 254 of driving power, and the connector 256 that connects FPC 230.
Power generator 254 produces and drives LCD panel 210, data I C 220a to 220d and grid IC 240a and the required driving power of 240b.
Data I C 220a is arranged on the first data COG zone to 220d, and is connected to each other by data LOG 224.In response to data controlling signal, each data I C 220a is that the signal that analog data signal also will be changed offers data line DL to 220d with digital data conversion.In the embodiment that the present invention describes, the LCD device comprises that four data IC 220a are to 220d.Yet the present invention can adopt the data I C of varying number to implement.
The first data I C 220a provides data drive signal, and this data drive signal comprises data-signal, data controlling signal and the data-driven power that also passes through the data LOG 224 that is connected with FPC 230 from control panel 250.The first data I C 220a also provides the source initial pulse SSP of Data Control line 260 in the middle of data controlling signal through being connected with FPC 230.
The second data I C 220b provides from control panel 250 and data-signal, data controlling signal and data-driven power at preceding first data I C 220a and data LOG 224 through connecting between the first data I C 220a and the second data I C 220b.Similarly, the 3rd data I C 220c and the 4th data I C 220d provide through with data-signal, data controlling signal and the data-driven power of each data LOG 224 that is connected at preceding data I C.
Grid IC 240a and 240b are arranged on the 2nd COG zone, and provide the grid drive signal, that is, and and from data controlling signal and the grid driving power of control panel 250 and process FPC 230 and grid LOG 244.In response to grid-control system signal, grid IC 240a and 240b produce gate pulse successively and the gate pulse that will produce offers grid line GL.In embodiment shown in Figure 3, be to be understood that this LCD device comprises two grid IC 240a and 240b.Yet practice of the present invention is not limited to the LCD device of two grid IC.
First grid IC 240a provides grid-control system signal and the grid driving power that also passes through the grid LOG244 that is connected with FPC 230 from control panel 250.First grid IC 240a also provides the grid initial pulse GSP that also passes through the grid-control system signal wire 270 that is connected with FPC 230 from control panel 250.The second grid IC 240b provides grid-control system signal and the grid driving power through the grid LOG 244 that is connected with first grid IC 220a.
According to the embodiment of the present invention, in order to show the screen of counter-rotating on the LCD device, source initial pulse SSP inputs to the first data I C 220a, and grid initial pulse GSP inputs to first grid IC 240a.In response to the frame data of reversible selection signal RI time schedule controller 252 with storage in the order output storage 54 opposite with input sequence, thereby data input to data I C 220a to 220d with every horizontal line positive sequence.
Hereinafter will describe the LCD device in more detail and produce operation standard and demonstration counter-rotating.
For display standard screen in the image demonstration of LCD device, outside input source data RGB adjusts by data processor 52, and the data storage that should adjust is in storer 54.
When reversible selection signal RI did not input to storer 54, storer 54 was exported the data that are stored in wherein with the order of input, that is, with order from first data-signal to the, four data-signals, thus the display standard screen.
When source initial pulse SSP inputed to the first data I C 220a by Data Control line 260, the first data I C 220a latched first data-signal of importing by data LOG 224 with positive sequence.
Then, after first data-signal corresponding to the first data I C 220a all was latched, the first data I C 220a produced carry signal.The carry signal that is produced by the first data I C 220a inputs to the second data I C 220b by carry out signal line 225.The second data I C 220b activates by carry signal, thereby and then first data-signal latchs with positive sequence by second data-signal that data LOG 224 provides.The third and fourth data I C 220c and 220d also latch third and fourth signal that provides by data LOG224 in response to the carry signal that produces with positive sequence.
In case all latch in 220d at first to the 4th data I C 220a with positive sequence corresponding to horizontal data, this latched data is converted to the signal of analog data signal and this conversion simultaneously and exports to data line DL.Horizontal line first to the 4th data I C 220a for each demonstration operates more than 220d repeats, that is, repeat latch data with positive sequence as mentioned above and repeat that this latched data is converted to analog data signal and export to data line DL to 220d with the signal that will change for each horizontal line first to the 4th data I C 220a.
In response to the grid initial pulse GSP that offers first grid IC 240a by grid-control system signal wire 270, grid IC 240a and 240b drive to the most last grid line successively since first grid line.
As mentioned above, the storer 54 of time schedule controller 252 is with the mode output data of first in first out (FIFO), data I C 220a also offers data line DL with this latch data to 220d with the positive sequence latch data, and grid IC 240a and 240b are with positive sequence driven grid line GL, thereby LCD panel 110 display standard screens.
For the image at the LCD device shows the screen that shows counter-rotating, outer input data RGB adjusts by data processor 52, and the data storage that should adjust is in storer 54.
When reversible selection signal RI inputed to storer 54, this storer 54 was stored in the screen that data are wherein reversed with demonstration with the order output opposite with input sequence.For example, storer 54 can be stored frame data as shown in table 1.
Table 1
| R10 | R11 | R12 | ... | R1(m-1) | R1m |
| G10 | G11 | G12 | ... | G1(m-1) | G1m |
| B10 | B11 | B12 | ... | B1(m-1) | B1m |
| .. | .. | .. | .. | .. | .. |
| Rn0 | Rn1 | Rn2 | ... | Rn(m-1) | Rnm |
| Gn0 | Gn1 | Gn2 | ... | Gn(m-1) | Gnm |
| Bn0 | Bn1 | Bn2 | ... | Bn(m-1) | Bnm |
With reference to table 1, data input to storer 54 from data R10, G10 and B10 data corresponding to [1,1] individual pixel of LCD panel 210 to Rnm, Gnm and Bnm corresponding to [n, m] individual pixel with the order of expection.For example, after data R10, G10 and B10 inputed to storer 54, data R11, G11 and B11 inputed to storer 54, thereby and also were read out the generation standard show after data R10, G10 and B10 are read out.If reversible selection signal RI inputs to storer 54, the data of this storage begin to read from storer to data R10, G10 and B10 corresponding to [1,1] individual pixel from data Rnm, Gnm and Bnm corresponding to [n, m] individual pixel with backward.For example, when producing the demonstration of counter-rotating because input sequence will with the reversed in order of data input or relative, data Rn (m-1), Gn (m-1) and Bn (m-1) export after data Rnm, Gnm and Bnm.
That is to say that in order to produce the demonstration of counter-rotating, storer is with from the most last horizontal order of n horizontal line to the first with the order output data from each the most last horizontal m pixel to first pixel.
In response to the source initial pulse SSP that offers the first data I C 220a, be latched in first to four data I C 220a to 220d for each horizontal line with positive sequence with the data after the backward output from storer 54.First to the 4th data I C 220a is converted to this latched data simulated data and this simulated data is exported to data line DL to 220d.That is to say that these data are latched in first to the 4th data I C 220a with the backward since the horizontal data of n to 220d from storer 54 outputs and with every horizontal positive sequence.This latched data offers data line DL.
In response to the grid initial pulse GSP that offers first grid IC 240a, the first and second grid IC 240a and 240b drive with positive sequence, thereby grid line GL is driven successively.
Therefore, when the first grid line GL drives, offer first to the 4th data I C 220 to 220d and with being filled in first horizontal line of LCD panel 210 that positive sequence latchs corresponding to the horizontal data of n with backward.When n grid line GL drives, offer first to the 4th data I C 220a to 220d and with being filled in the n horizontal line of LCD panel 210 that positive sequence latchs corresponding to the first horizontal data with backward.Therefore, the screen of counter-rotating shows in LCD panel 210.
As mentioned above, the storer 54 of time schedule controller 252 is with the order output data opposite with input sequence, data I C 220a latchs the data of this output and this latched data is offered data line DL with positive sequence to 220d, and grid IC 240a and 240b are with positive sequence driven grid line GL, thereby LCD panel 110 shows the screen of counter-rotating.That is to say since according to the output order of LCD device of the present invention by the storer translation data showing the screen of counter-rotating, data I C 220a need not drive with backward to 220d and grid IC 240a and 240b.Therefore, the screen of the screen of standard and counter-rotating only can utilize that a source initial pulse SSP and a grid initial pulse GSP show on LCD panel 210.
As mentioned above, have the following advantages according to LCD device of the present invention and driving method thereof.
Change in reversed the selections signal from time schedule controller owing to be used to show the output ordinal response of the data-signal of counter-rotating screen or standard screen, data I C and grid IC can positive sequence drive and can save the setting with backward driving grid IC and data I C.Therefore, the LCD panel only can provide a source initial pulse to offer the first data I C and a grid initial pulse is used to produce screen counter-rotating or standard to offer first grid IC.Therefore, the screen defective that can avoid the signal delay by the initial pulse that offers the most last data I C and grid IC to cause.
Obviously under the situation that does not break away from the spirit and scope of the present invention, those of ordinary skill in the art can make various modifications and variations to the present invention.Therefore, the invention is intended to cover improvement and modification within all scopes that fall into claims and equivalent thereof.
Claims (10)
1. a liquid crystal display device comprises:
Display panels with the pixel region that limits by many grid lines and many data lines intersection;
Data-signal is offered the data driver of data line;
Gate signal is offered the gate driver of grid line; And
Time schedule controller, it comprises the storer of the view data of storing a field, thereby the output order that described time schedule controller is controlled described data driver and described gate driver and is chosen in the storage of image in described storer data provides described data driver selecting between the generation of standard screen on the described display panels and counter-rotating screen, and the described first grid integrated circuit that wherein said time schedule controller offers described first data integrated circuit of described a plurality of data integrated circuits with the source initial pulse and the grid initial pulse offered described a plurality of grid integrated circuit is to produce described standard screen and to produce described counter-rotating screen.
2. liquid crystal display device according to claim 1, it is characterized in that, described data driver comprises the data integrated circuit sequence of the cascade that is arranged on described display panels first side, and first data integrated circuit of the data integrated circuit sequence of described cascade receives data output from storer.
3. liquid crystal display device according to claim 1, it is characterized in that the grid integrated circuit sequence that described gate driver comprises the cascade that is arranged on second side on the described display panels is with the first grid integrated circuit of the grid integrated circuit sequence that the grid drive signal offered cascade.
4. liquid crystal display device according to claim 1 is characterized in that, described time schedule controller will select to be stored in the output order of the view data in the described storer in response to the signal of selecting.
5. liquid crystal display device according to claim 4, it is characterized in that, if during described selection signal indication standard screen, described time schedule controller is stored in the output order of the view data in the described storer with identical with the input sequence of described data with selecting, if and during the described counter-rotating screen of described selection signal indication, described time schedule controller with the described output order of selecting to be stored in the described view data in the described storer be stored in described storer in the described input sequence of described view data opposite.
6. liquid crystal display device according to claim 1, it is characterized in that, thus described time schedule controller will drive described data integrated circuit sequence and described grid integrated circuit sequence each produce described standard screen and produce described reverse image with positive sequence with same order.
7. method that is used to drive liquid crystal display device comprises:
Storage one frame image data in storer;
If select signal indication counter-rotating screen, to export the described data that are stored in the described storer with the order of the previous reversed in order of importing of data;
The source initial pulse is offered first data integrated circuit of a plurality of data integrated circuits;
In described a plurality of data integrated circuits, latch described output data successively to drive many data lines;
The grid initial pulse is offered the first grid integrated circuit of a plurality of grid integrated circuit; And
Drive described a plurality of grid integrated circuit successively to drive many grid lines.
8. method that is used to drive liquid crystal display device comprises:
Storage one frame image data in storer;
Selection is stored in the output order of data described in the described storer and exports described data according to the selection signal in proper order with the output of described selection;
The source initial pulse is offered first data integrated circuit of a plurality of data integrated circuits;
In described a plurality of data integrated circuits, latch data from the described output of described storer successively to drive many data lines;
The grid initial pulse is offered the first grid integrated circuit of a plurality of grid integrated circuit; And
Drive described a plurality of grid integrated circuit successively to drive many grid lines.
9. method according to claim 8, it is characterized in that, selection is stored in that output in the described storer comprises in proper order if during described selection signal indication standard screen, select the output order with identical with the input sequence of described storage data, if and during described selection signal indication counter-rotating screen, select the output order with opposite with the described input sequence of described storage data.
10. method according to claim 8, it is characterized in that described a plurality of data integrated circuits latch with positive sequence that order latchs successively and described a plurality of grid integrated circuit drives in proper order to produce described standard screen and a plurality of data integrated circuit with the positive sequence driving and latchs with described positive sequence successively that order latchs and described a plurality of grid integrated circuit drives to produce the counter-rotating screen in proper order with described positive sequence driving.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060028980 | 2006-03-30 | ||
| KR20060028980 | 2006-03-30 | ||
| KR1020060081518 | 2006-08-28 |
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| CN101046565A CN101046565A (en) | 2007-10-03 |
| CN100516996C true CN100516996C (en) | 2009-07-22 |
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| CNB2006101407222A Expired - Fee Related CN100516996C (en) | 2006-03-30 | 2006-09-30 | Liquid crystal display device and method for driving the same |
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| KR (1) | KR101362132B1 (en) |
| CN (1) | CN100516996C (en) |
Families Citing this family (7)
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|---|---|---|---|---|
| KR101653246B1 (en) | 2010-02-03 | 2016-09-12 | 삼성디스플레이 주식회사 | Method of driving a display panel and display apparatus for performing the same |
| KR20110124039A (en) * | 2010-05-10 | 2011-11-16 | 삼성전자주식회사 | Data driver for driving a display panel and display device comprising the same |
| CN102662265B (en) * | 2012-05-10 | 2014-11-05 | 深圳市华星光电技术有限公司 | Liquid crystal display module and liquid crystal display device |
| KR102023939B1 (en) * | 2012-12-26 | 2019-11-04 | 엘지디스플레이 주식회사 | Image display device and method for driving the same |
| KR102066139B1 (en) * | 2013-11-21 | 2020-01-14 | 엘지디스플레이 주식회사 | Organic light emitting display panel and organic light emitting display device including the same |
| CN109192164A (en) * | 2018-10-10 | 2019-01-11 | 惠科股份有限公司 | Display device and its method for eliminating shutdown ghosting image |
| CN111028753B (en) * | 2019-12-06 | 2023-06-27 | Tcl华星光电技术有限公司 | Data driving delay compensation device and method thereof, and display device |
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| JP2003099028A (en) * | 2001-09-25 | 2003-04-04 | Hitachi Ltd | Information processing terminal |
| JP2004109969A (en) * | 2002-07-22 | 2004-04-08 | Fujitsu Display Technologies Corp | Liquid crystal display |
| KR20050000644A (en) * | 2003-06-24 | 2005-01-06 | 엘지.필립스 엘시디 주식회사 | Driving apparatus and method of liquid crystal display device |
| JP4170242B2 (en) | 2004-03-04 | 2008-10-22 | シャープ株式会社 | Liquid crystal display device and driving method of liquid crystal display device |
-
2006
- 2006-08-28 KR KR1020060081518A patent/KR101362132B1/en active IP Right Grant
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| KR20070098418A (en) | 2007-10-05 |
| KR101362132B1 (en) | 2014-02-13 |
| CN101046565A (en) | 2007-10-03 |
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