CN102254522A - Driving method and module - Google Patents
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- CN102254522A CN102254522A CN2010101800260A CN201010180026A CN102254522A CN 102254522 A CN102254522 A CN 102254522A CN 2010101800260 A CN2010101800260 A CN 2010101800260A CN 201010180026 A CN201010180026 A CN 201010180026A CN 102254522 A CN102254522 A CN 102254522A
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Abstract
The invention discloses a driving method and module for eliminating bright and dark lines in a liquid crystal display. The driving method comprises a step of controlling a plurality of pixels corresponding to a data wire and being arranged in a first column and a plurality of pixels corresponding to the data wire and being arranged in a second column to be charged in different sequences.
Description
Technical field
The present invention is meant a kind of driver module and driving method, and particularly a kind of LCD that is used for is charged with different order to shared data line and the pixel that is arranged at different lines, eliminates the driver module and the driving method of the phenomenon of bright concealed wire.
Background technology
LCD (liquid crystal display, LCD) have low radiation, volume is little and advantage such as low power consuming, replace traditional cathode-ray tube (CRT) (cathode ray tube gradually, CRT) display, and then be widely used in mobile computer, personal digital assistant (personal digital assistant, PDA), on the information products such as flat-surface television or mobile phone.Generally speaking, LCD is to utilize source electrode drive circuit (source driver) and gate driver circuit (gate driver) to drive pixel on the panel with display image.Because the cost of source electrode drive circuit is than the gate driver circuit height, in order to reduce the use amount of source electrode drive circuit, thereby derive bigrid (Dual Gate) structure of dot structure shared data line, or claim half source drive (half source driver, HSD).In simple terms, at the pixel of similar number, double-grid structure is that the data line with source electrode drive circuit reduces by half, and the sweep trace of gate driver circuit is doubled, to reduce production cost.Yet because the time that gate drive signal is opened reduces by half, data line only has 1/2nd of normal configuration to pixel (pixel) duration of charging, causes the pixel undercharge easily.
In addition, for fear of use same polar voltages (as positive voltage or negative voltage) constantly to drive liquid crystal molecule always, and the reduction liquid crystal molecule is to the polarization or the refraction effect of light, make the deterioration that picture shows, must use the generating positive and negative voltage alternant way to drive liquid crystal molecule, as single line reverse drive (one line inversion), two-wire reverse drive (two line inversion), row reverse drive modes such as (columninversion).Because double-grid structure is the shared data line, therefore in double-grid structure, adopt the two-wire reverse drive more, its be two pixels (being controlled by two sweep traces respectively) to the online same row of shared data with the same polarity voltage charging, and the pixel of next column is charged with opposite polarity voltage.
Please refer to Fig. 1, Fig. 1 is for driving the synoptic diagram of the pixel on the liquid crystal indicator 10 in proper order with the Z font in the prior art.For convenience of description, liquid crystal indicator 10 only comprises source electrode drive circuit 100, gate driver circuit 102, timing controller 104 and display panels 106.Display panels 106 is bigrid drives structure, and it comprises data line CH_1～CH_p, sweep trace GL_1～GL_q and pixel configuration Mat.In pixel configuration Mat, each pixel is made up of a thin film transistor (TFT) and a liquid crystal capacitance, for the sake of clarity, represents with square.With row, per two row pixels are controlled by same data line, for example red pixel R1～Rn and green pixel G1～Gn are controlled by data line CH_1, blue pixel B1～Bn and red pixel R1 '～Rn ' are controlled by data line CH_2, green pixel G1 '～Gn ' and blue pixel B1 '～Bn ' are controlled by data line CH_3, and by that analogy.And with row, each row pixel is controlled by adjacent two sweep traces, for example, on row Row_1, red pixel R1, blue pixel B1 and green pixel G1 ' are controlled by sweep trace GL_1, green pixel G1, red pixel R1 ' and blue pixel B1 ' are then controlled by sweep trace GL_2, other each row (Row_2, Row_3 ... Row_n) also be identical configuration.
When the pixel that drives in proper order with the Z font on the liquid crystal indicator 10, timing controller 104 is respectively by source electrode drive circuit 100 and gate driver circuit 102, the signal magnitude of control output data line CH_1～CH_p and sweep trace GL_1～GL_q, polarity, timing etc. are to charge with the order of Z font to each pixel among the pixel configuration Mat.That is, as shown in phantom in Figure 1, the pixel of data line CH_1 is with R1 → G1 → R2 → G2 ... order charging, the rest may be inferred for all the other.Yet Z font type of drive can make data line CH_1 and CH_3 go up the full and G1 '～Gn ' undercharge of green pixel G1～Gn charging, causes the phenomenon of vertical bright concealed wire.
Please continue with reference to figure 2, Fig. 2 is the waveform synoptic diagram of data line CH_1 among Fig. 1～CH_3 output two-wire reverse drive signals.Because human eye is comparatively responsive to green, therefore, carry out the test of bright concealed wire this output waveform (promptly the green pixel charging is less to show green picture with the blue pixel charging is more to redness) with green picture.As shown in Figure 2, under the Z font drove, data line CH_1 was with pixel R1 → G1 → R2 → G2 ... order charging.When a pixel was charged, if its charging polarity with a last pixel is different, then voltage time (settling time) of arriving stable state grow (as pixel R1, R2), and it is shorter to add the duration of charging, so easy undercharge.For instance, pixel R1, the G1 on the Row_1 is different with pixel R2, G2 charging polarity on the row Row_2 for row, so red pixel R1, R2 charging is than deficiency and green pixel G1, G2 charge fuller.Similarly, data line CH_3 to green pixel G1 ', G2 ' charging than deficiency and blue pixel B1 ', B2 ' charging fuller.The rest may be inferred, green pixel G1 on the data line CH_1～Gn charging is fuller, corresponding natural whitening (normally white) type display panels is visual darker, green pixel G1 ' on the data line CH_3～Gn ' undercharge, corresponding natural whitening type display panels is visual brighter, therefore causes the phenomenon of vertical bright concealed wire.
Therefore, to using the bigrid dot structure of two-wire reverse drive, because prior art is adopted the Z font in proper order to the driving of pixel and is driven, therefore the pixel charging order of corresponding same each row of online data is identical, make online data have pixel charging on one side fuller, cause the visual phenomenon that can be observed vertical bright concealed wire.In view of this, prior art has improved necessity in fact.
Summary of the invention
Therefore, fundamental purpose of the present invention promptly is to provide a kind of driver module and driving method.
The present invention discloses a kind of driving method, is used for LCD and eliminates bright concealed wire.This driving method comprise control corresponding to data line and a plurality of pixels of being arranged at first row with charge with different order corresponding to this data line and a plurality of pixels of being arranged at secondary series.
The present invention also discloses a kind of driver module, is used for LCD and eliminates bright concealed wire.This driver module comprises the data line signal processing unit, is used for according to synchronizing signal, produces a plurality of data drive signal; The scanning-line signal processing unit is used for producing a plurality of gate drive signals according to the output enable signal; And control module, be used for producing this synchronizing signal and this output enable signal, to control this data line signal processing unit and this scanning-line signal processing unit, make corresponding to data line and a plurality of pixels of being arranged at first row with charge with different order corresponding to this data line and a plurality of pixels of being arranged at secondary series.
Description of drawings
Fig. 1 is for driving the synoptic diagram of the pixel on the liquid crystal indicator in proper order with the Z font in the prior art.
Fig. 2 is the waveform synoptic diagram of data line output two-wire reverse drive signals among Fig. 1.
Fig. 3 is the synoptic diagram of embodiment of the invention driver module.
Fig. 4 is for driving the synoptic diagram of pixel with 222 orders in the embodiment of the invention
Fig. 5 is the waveform synoptic diagram of data line output two-wire reverse drive signals among Fig. 4.
When Fig. 6 A and Fig. 6 B are respectively with 222-555 order driving pixel, the synoptic diagram of the output signal of sweep trace and data line in strange frame and even frame.
Fig. 7 drives the synoptic diagram of flow process for the embodiment of the invention.
Wherein, description of reference numerals is as follows:
10 liquid crystal indicators
100 source electrode drive circuits
102 gate driver circuits
104 timing controllers
106 display panels
30 driver modules
32 display panels
300 data line signal processing units
302 scanning-line signal processing units
304 control modules
70 flow processs
700～704 steps
CH_1～CH_p data line
GL_1～GL_q sweep trace
Mat pixel configuration
R1～Rn, R1 '～Rn ' red pixel
G1～Gn, G1 '～Gn ' green pixel
B1～Bn, B1 '～Bn ' blue pixel
Row_1～Row_n row
The Syn synchronizing signal
Data_1～Data_p data drive signal
Ena output enable signal
Gate_1～Gate_q gate drive signal
Embodiment
Please refer to Fig. 3, Fig. 3 is the synoptic diagram of embodiment of the invention driver module 30.Driver module 30 is used for driving display panels 32, to eliminate bright concealed wire.Liquid crystal display face version 32 is a double-grid structure, promptly be same as the display panels 106 of Fig. 1, therefore, for clearly demonstrating spirit of the present invention, the accompanying drawing of each assembly and symbol are all continued to use the accompanying drawing and the symbol of display panels 106 each assembly among Fig. 1 in the liquid crystal display face version 32, in the hope of succinctly.Driver module 30 comprises data line signal processing unit 300, scanning-line signal processing unit 302 and control module 304.Control module 304 is used for producing synchronizing signal Syn and output enable signal Ena, with control data line signal processing unit 300 and scanning-line signal processing unit 302, and then output data drive signal Data_1～Data_p reaches output gate drive signal Gate_1～Gate_q to sweep trace GL_1～GL_q to data line CH_1～CH_p.For fear of the phenomenon that produces bright concealed wire, control module 304 is control data line signal processing unit 300 and scanning-line signal processing unit 302, and the pixel of sharing same data line and being arranged on the different lines is charged with different order.
In simple terms, the present invention adjusts data drive signal Data_1～Data_p and gate drive signal Gate_1～Gate_q, and the pixel that makes shared same data line be arranged at different lines is charged with different order.For instance, red pixel R1～Rn and green pixel G1～Gn at shared data line CH_1, according to notion of the present invention, can adopt R1 → G1 → G2 → R2 → R3 → G3 → G4 → R4 ... order charging, be odd column Row_1, Row_3, Row_5 ... on pixel be that the mode of adopting is from left to right charged, and even column Row_2, Row_4, Row_6 ... on the pixel mode of then adopting from right to left charge.Thus, the pixel in the liquid crystal display face version 32 on the adjacent column is to adopt different charging order, can avoid pixel charging full (or not enough) on one side.
The example that above-mentioned adjacent column is adopted different charging order can be described as " bow " shape and drives or " 222 " type of drive.In more detail, please refer to Fig. 4 and Fig. 5, Fig. 4 is for driving the synoptic diagram of pixel with 222 orders in the embodiment of the invention, and Fig. 5 is the waveform synoptic diagram of data line CH_1 among Fig. 4～CH_3 output two-wire reverse drive signals.In Fig. 4, each pixel is that promptly shown in dotted line, the pixel of data line CH_1 is with R1 → G1 → G2 → R2 with 222 order chargings among the pixel configuration Mat ... order charging, the pixel of data line CH_2 is with B1 → R1 ' → R2 ' → B2 ... order charging, the rest may be inferred for all the other.In the case, since data line CH_1 be with pixel R1 → G1 → G2 → R2 ... the order charging, and pixel R1, the G1 on the Row_1 is different with pixel G2, R2 charging polarity on the row Row_2 for row, so pixel R1, G2 charging is than deficiency and green pixel G1, R2 charge fuller.The rest may be inferred, data line CH_1 goes up green pixel G1, the G3 of odd column ... it is fuller to charge, and green pixel G2, the G4 of even column ... charging is not enough, so the green pixel G1～Gn on the data line CH_1 can all not charge fullly or not enough, and causes bright line or concealed wire.Similarly, the green pixel of other online data can all not charge full or not enough yet, thus, can avoid producing the phenomenon of bright concealed wire.
It should be noted that, the above only is embodiments of the invention, main spirit of the present invention is the pixel that is arranged at different lines in the shared data line is charged with different order, make data line not have pixel charging full (or not enough) on one side, thereby eliminate the phenomenon of vertical bright concealed wire.Those skilled in the art change and modification when complying with notion of the present invention, and are not limited thereto.For instance, cooperate different charging orders, scanning-line signal processing unit 302 also should appropriately be adjusted the output order of gate drive signal Gate_1～Gate_q.With Fig. 4 is example, and scanning-line signal processing unit 302 is with Gate_1 → Gate_2 → Gate_4 → Gate_3 → Gate_5 → Gate_6 → Gate_8 → Gate_7 ... order output gate drive signal Gate_1～Gate_q.In other words, after scanning-line signal processing unit 302 has been exported gate drive signal Gate_1, Gate_2, can skip to gate drive signal Gate_4 earlier, export gate drive signal Gate_3 again.If will avoid jumping the way of output of preface, also can be with the place-exchange (meaning is that sweep trace GL_3 drives pixel G2 and sweep trace GL_4 driving pixel R2) of sweep trace GL_3 and GL_4, place-exchange with sweep trace GL_7 and GL_8, and by that analogy, then scanning-line signal processing unit 302 is to export gate drive signal from top to bottom in regular turn.Yet, be noted that, how scanning-line signal processing unit 302 exports gate drive signal Gate_1～Gate_q, or the implementation of data line signal processing unit 300 and control module 304 etc., do not influence scope of the present invention, as long as the pixel energy of sharing same data line and being arranged on the different lines is charged with different order, get final product to avoid or to reduce bright concealed wire phenomenon.
In addition, the present invention also is not limited to double-grid structure, and other also can adopt notion of the present invention as three grid structures.Moreover, be arranged at same row but also can different order charging corresponding to the pixel of different pieces of information line, promptly be not limited to " 222 " in proper order, also can be in proper order as " 255 ", " 252 " etc.So-called " 255 " are that the pixel of expression data line CH_1 is with R1 → G1 → G2 → R2 → R3 → G3 → G4 → R4 ... order charging, the pixel of data line CH_2 is with R1 ' → B1 → B2 → R2 ' → R3 ' → B3 → B4 → R4 ' ... order charging, the pixel of data line CH_3 is with B1 ' → G1 ' → G2 ' → B2 ' → B3 ' → G3 ' → G4 ' → B4 ' ... order charging, and by that analogy.And " 252 " are to represent that the pixel of data line CH_1 is with R1 → G1 → G2 → R2 → R3 → G3 → G4 → R4 ... order charging, the pixel of data line CH_2 is with R1 ' → B1 → B2 → R2 ' → R3 ' → B3 → B4 → R4 ' ... order charging, the pixel of data line CH_3 is with G1 ' → B1 ' → B2 ' → G2 ' → G3 ' → B3 ' → B4 ' → G4 ' ... order charging, and by that analogy.The charging order of " 255 " or " 252 " also can be avoided the phenomenon of vertical bright concealed wire.
In addition, also may command when showing adjacent two frames (frame), with different order charging, in order to submit the wrong mode that shows with the time, avoids brighter or darker pixel to be fixed on the same position corresponding to same data line and the pixel that is arranged at same row.For instance, please refer to Fig. 6 A and Fig. 6 B, when Fig. 6 A and Fig. 6 B are respectively with 222-555 order driving pixel, the synoptic diagram of the output signal of sweep trace GL_1～GL_8 and data line CH_1 in strange frame and even frame.Shown in Fig. 6 A and Fig. 6 B, in strange frame, the opening sequence of sweep trace GL_1～GL_q be GL_1 → GL_2 → GL_4 → GL_3 → ..., promptly with pixel R1 → G1 → G2 → R2 ... the order charging; In even frame, the opening sequence of sweep trace GL_1～GL_q be GL_2 → GL_1 → GL_3 → GL_4 → ..., promptly with pixel G1 → R1 → R2 → G2 ... the order charging.Thus, in strange frame and even frame, the pixel (as R1, G1) of sharing same data line and being arranged at same row is with different order charging (being that R1 → G1 and G1 → R1 replace), so can avoid brighter or darker pixel to be fixed on the same position.The rest may be inferred, also can 255-522 order and 252-525 drive pixel in proper order, to reach same effect.
Therefore, charge with different order by the pixel that will share same data line and be arranged on the different lines, driver module 30 can avoid display panels 32 to produce the phenomenon of bright concealed wire.Be noted that, driver module 30 is in order to operation situation of the present invention to be described, its implementation is not limited to software or hardware mode, and those skilled in the art are when can be required according to system, make suitable modification, or realize driver module 30 by adjusting the conventional ADS driving module.For instance, if source electrode drive circuit 100 only has signal amplifying function (being that data drive signal Data_1～Data_p and gate drive signal Gate_1～Gate_q are produced by timing controller 104 to sweep trace GL_1～GL_q) with gate driver circuit 102 among Fig. 1, then can be by revising the order of timing controller 104 output signals, reach the function of driver module 30, or be the order of not revising timing controller 104 output signals, reach with gate driver circuit 102 internal wirings but change source electrode drive circuit 100.Perhaps, having signal simultaneously as if source electrode drive circuit among Fig. 1 100 and gate driver circuit 102 amplifies and the function of handling (being that timing controller 104 is only exported video data and timing), then can reach the function of driver module 30 by revising the signal processing logic of source electrode drive circuit 100 and gate driver circuit 102.All this kind all is for the pixel of sharing same data line and being arranged on the different lines is charged with different order, to eliminate the phenomenon of bright concealed wire.
The running of driver module 30 can reduce and drive flow process 70, as shown in Figure 7.Driving flow process 70 may further comprise the steps:
Step 700: beginning.
Step 702: control module 304 control is charged with different order corresponding to same data line and the pixel that is arranged at different lines.
Step 704: finish.
Display panels at double-grid structure, prior art is to adopt Z font type of drive pixel is charged, therefore the pixel charging order of online each row of corporate data is identical, makes online data have pixel charging on one side fuller, causes the visual phenomenon that can be observed vertical bright concealed wire.Compare down, the present invention charges with different order to common data line and the pixel that is arranged at different lines, makes online data not have pixel charging full (or not enough) on one side, thereby eliminates the phenomenon of vertical bright concealed wire.In addition, the present invention more can control corresponding to same data line and a plurality of pixels of being arranged at same row when showing adjacent two frames, with different order charging, avoids brighter or darker pixel to be fixed on the same position.
In sum, the present invention can eliminate the phenomenon of vertical bright concealed wire, and can avoid brighter or darker pixel to be fixed on the same position.
The above only is the preferred embodiments of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. driving method is used for liquid crystal indicator and eliminates bright concealed wire, it is characterized in that, comprising: control corresponding to data line and a plurality of pixels of being arranged at first row with charge with different order corresponding to this data line and a plurality of pixels of being arranged at secondary series.
2. driving method as claimed in claim 1 is characterized in that, these first row and this secondary series are adjacent column.
3. driving method as claimed in claim 1 is characterized in that, also comprise control corresponding to this data line and this a plurality of pixels of being arranged at these first row when showing adjacent two frames, charge with identical or different order.
4. driving method as claimed in claim 1 is characterized in that, comprises that also control setting charges with identical or different order in same row and corresponding to a plurality of pixels of different pieces of information line.
5. a driver module is used for liquid crystal indicator and eliminates bright concealed wire, it is characterized in that, comprising:
The data line signal processing unit is used for according to synchronizing signal, produces a plurality of data drive signal;
The scanning-line signal processing unit is used for producing a plurality of gate drive signals according to the output enable signal; And
Control module, be used for producing this synchronizing signal and this output enable signal, to control this data line signal processing unit and this scanning-line signal processing unit, make corresponding to data line and a plurality of pixels of being arranged at first row with charge with different order corresponding to this data line and a plurality of pixels of being arranged at secondary series.
6. driver module as claimed in claim 5 is characterized in that, these first row and this secondary series are adjacent column.
7. driver module as claimed in claim 5, it is characterized in that, this control module also is used for controlling this data line signal processing unit and this scanning-line signal processing unit, make corresponding to this data line and this a plurality of pixels of being arranged at these first row when showing adjacent two frames, charge with identical or different order.
8. driver module as claimed in claim 5, it is characterized in that, this control module also is used for controlling this data line signal processing unit and this scanning-line signal processing unit, makes to be arranged at same row and to charge with identical or different order corresponding to a plurality of pixels of different pieces of information line.
9. driver module as claimed in claim 5 is characterized in that, is to be located in the timing controller of this liquid crystal indicator.
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| CN103187038A (en) * | 2011-12-31 | 2013-07-03 | 上海中航光电子有限公司 | Double-gate liquid crystal display device and driving method thereof |
| CN104267555A (en) * | 2014-10-23 | 2015-01-07 | 深圳市华星光电技术有限公司 | TFT (Thin Film Transistor) array substrate |
| CN104882110A (en) * | 2015-06-23 | 2015-09-02 | 合肥鑫晟光电科技有限公司 | Display driving method, display driving unit and display device |
| CN106486077A (en) * | 2016-12-29 | 2017-03-08 | 深圳市华星光电技术有限公司 | A kind of driving method improving big visual angle colour cast, display floater and display device |
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| CN103187038A (en) * | 2011-12-31 | 2013-07-03 | 上海中航光电子有限公司 | Double-gate liquid crystal display device and driving method thereof |
| CN103187038B (en) * | 2011-12-31 | 2016-04-20 | 上海中航光电子有限公司 | A kind of double-gate liquid crystal display device and driving method thereof |
| CN104267555A (en) * | 2014-10-23 | 2015-01-07 | 深圳市华星光电技术有限公司 | TFT (Thin Film Transistor) array substrate |
| CN104882110A (en) * | 2015-06-23 | 2015-09-02 | 合肥鑫晟光电科技有限公司 | Display driving method, display driving unit and display device |
| WO2017049675A1 (en) * | 2015-09-22 | 2017-03-30 | 深圳市华星光电技术有限公司 | Oled display device digital driving method |
| CN106898313A (en) * | 2015-10-13 | 2017-06-27 | 精工爱普生株式会社 | Circuit arrangement, board, electric optical device and electronic equipment |
| CN106486077A (en) * | 2016-12-29 | 2017-03-08 | 深圳市华星光电技术有限公司 | A kind of driving method improving big visual angle colour cast, display floater and display device |
| CN107765482A (en) * | 2017-10-12 | 2018-03-06 | 惠科股份有限公司 | Array base palte and its display panel of application |
| CN109471281A (en) * | 2018-07-02 | 2019-03-15 | 惠科股份有限公司 | The manufacturing method of display panel and liquid crystal display panel |
| CN109471281B (en) * | 2018-07-02 | 2022-12-23 | 惠科股份有限公司 | Display panel and method for manufacturing liquid crystal display panel |
| WO2020093512A1 (en) * | 2018-11-06 | 2020-05-14 | 惠科股份有限公司 | Pixel driving circuit, array substrate and display device |
| CN109658892A (en) * | 2019-01-30 | 2019-04-19 | 惠科股份有限公司 | The driving method and display device of a kind of display panel, display panel |
| WO2020155216A1 (en) * | 2019-01-30 | 2020-08-06 | 惠科股份有限公司 | Display panel, driving method for display panel and display device |
| US12014699B2 (en) | 2019-01-30 | 2024-06-18 | HKC Corporation Limited | Display panel, display panel driving method, and display device |
| CN109741701A (en) * | 2019-02-21 | 2019-05-10 | 武汉天马微电子有限公司 | Display panel and its driving method, display device |
| CN109817150A (en) * | 2019-03-28 | 2019-05-28 | 京东方科技集团股份有限公司 | A kind of image element driving method, pixel driving device and display device |
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