CN1941053A - Liquid-crystal display device and its driving circuit - Google Patents
Liquid-crystal display device and its driving circuit Download PDFInfo
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- CN1941053A CN1941053A CN 200510100065 CN200510100065A CN1941053A CN 1941053 A CN1941053 A CN 1941053A CN 200510100065 CN200510100065 CN 200510100065 CN 200510100065 A CN200510100065 A CN 200510100065A CN 1941053 A CN1941053 A CN 1941053A
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Abstract
This invention is a LCD and its driving method. The LCD includes several scanning beams in parallel, several data beams in parallel and insulated vertical crossing with the scanning beams, several thin-film transistors on the cross of the scanning and data beams and linked to them, several pixel units, one scanning driving circuit linked all the scanning beams, one data driving circuit linked all the data beams. A pixel electrode on each pixel unit links to film transistor. There is one resuming end on a locker in the data driving circuit. When a pulse is supplied to the resuming end, the data driving circuit generates several black signals to the data beams said above.
Description
[technical field]
The present invention relates to a kind of Liquid Crystal Display And Method For Driving, particularly a kind of Liquid Crystal Display And Method For Driving that can make picture show no smear.
[background technology]
LCD has to be had frivolously, and therefore characteristics such as low power consumption and radiation are few are widely used in fields such as portable DVD player, PDA(Personal Digital Assistant), visual music player, mobile phone and notebook computer.
See also Fig. 1, it is a kind of LCD of prior art, this LCD 100 comprises a top glass substrate (figure do not show), lower glass substrate (figure do not show), a liquid crystal layer two glass substrates between (scheme do not show), scan driving circuit 11, a data drive circuit 12 and a control circuit 17 staggered relatively with this top glass substrate.
This lower glass substrate comprises that many sweep traces that are parallel to each other 13, many are parallel to each other and the data line 14 that intersects vertically with these sweep trace 13 insulation respectively, be positioned at multi-strip scanning line 13 and many data lines 14 intersect a plurality of thin film transistor (TFT)s 15 and a plurality of pixel electrodes 151 at place.The grid of this thin film transistor (TFT) 15 is connected to one scan line 13, and its source electrode is connected to a data line 14, and its drain electrode is connected to a pixel electrode 151.
This top glass substrate comprises a plurality of public electrodes 152 that a plurality of and pixel electrode 151 are relative and transparent.This public electrode 152 can be made of the tin indium oxide material.Each pixel electrode 151, a public electrode 152 and the liquid crystal molecule that is clipped between this two electrode 151,152 constitute a pixel cell 153, and pixel cell 153 is minimum display units of this LCD 100.Usually, one stable common electric voltage Vcom is provided for all public electrodes 152, the gray scale voltage Vd that is produced according to external image data PD (pixel data) is provided for pixel electrode 151, then the liquid crystal molecule between two electrodes 151,152 reverses a special angle under the voltage difference of two electrodes 151,152, realizes that GTG shows.
This data drive circuit 12 comprises a bit shift register 121, one bolt lock device 122, one impact damper 123, one D/A conversion circuit 124 and an output state 125, this bit shift register 121 produces a plurality of control signal C1-CK according to data clock signal CLK1, and (k is a natural number, the columns of its representative data line), this bolt lock device 122 receives and stores many view data PD (pixel data that exported by control circuit 17 successively according to this control signal C1-CK, PD), deposit a view data PD in time that bolt lock device 122 needs k data clock period CLK1 altogether one by one, when bolt lock device 122 finish receive action after, this bolt lock device 122 is disposable to be sent to this impact damper 123 simultaneously with a view data PD.123 in this impact damper outputs to D/A conversion circuit 124 together with all view data PD that receive.This output state 125 then is a plurality of gray scale voltage Vd that receive a view data PD of representative who is exported by D/A conversion circuit 124 with mode arranged side by side, and this output state 125 is also exported many data lines 14 of a plurality of these LCD 100 of gray scale voltage Vd of representing a view data PD side by side.
Seeing also Fig. 2, is the drive signal waveform figure of above-mentioned LCD 100.Wherein, " CLK2 " is the scan clock signal oscillogram, and " G1-Gn " is a plurality of sweep signal oscillograms, and " Vcom " provides the common electric voltage oscillogram on public electrode 152, and " Vd " provides the oscillogram to the gray scale voltage of pixel electrode 151.
See also Fig. 1 and Fig. 2, this scan drive circuit 11 produces a plurality of sweep signals 19 continuously in a frame time T, provides this sweep signal 19 to each horizontal scanning line 13 then successively.This sweep signal 19 is high voltages, and during a horizontal scanning line 13 was provided sweep signal 19, this high voltage made a plurality of thin film transistor (TFT)s 15 that are connected on this row all be in opening, that is, and and the drain electrode of a plurality of thin film transistor (TFT)s 15 on this row and source electrode conducting.
Simultaneously, during a horizontal scanning line 13 is provided sweep signal 19, this data drive circuit 12 provides a plurality of gray scale voltage Vd that represent a frame image data PD to these many data lines 14, a plurality of then gray scale voltage Vd offer a plurality of pixel electrodes by the source electrode and the drain electrode of a plurality of thin film transistor (TFT)s 15 on this row respectively, make a plurality of pixel cells 153 that are positioned on this horizontal scanning line 13 show and keep this frame image data PD.
Back one frame scan signal 19 ' offer before this horizontal scanning line 13, the view data PD that is positioned at a plurality of liquid crystal pixel cells 153 demonstrations on this horizontal scanning line 13 remains unchanged.
During this horizontal scanning line 13 of one frame scan signal 19 ' offer of back, this high voltage makes a plurality of thin film transistor (TFT)s 15 that are connected on this row all be in opening, simultaneously, this data drive circuit 12 provides a plurality of gray scale voltage Vd that represent back one frame image data PD ' to many data lines 14, then, represent a plurality of gray scale voltage Vd of back one frame image data PD ' to offer a plurality of pixel electrodes 151 by the source electrode and the drain electrode of a plurality of thin film transistor (TFT)s 15 on this row respectively, make the display update that is positioned at a plurality of pixel cells 153 on this horizontal scanning line 13 be back one frame image data PD '.
If when this LCD 100 showed animated image data PD, the image of two continuous frames picture was different, is easy to produce smear.Reason on the one hand is that the response speed of liquid crystal molecule under driven between pixel electrode 151 and the public electrode 152 is limited, it can not be followed gray scale voltage Vd and be torqued into special angle in a frame time T, sometimes even need two frames or above time to be torqued into special angle with gray scale voltage Vd.
On the other hand, the generation of smear is not the response speed that depends on liquid crystal molecule fully.The image that one frame picture shows by eye-observation to after can the observer in be detained a period of time, when this LCD 100 shows animated image data PD, because the conversion time of two continuous frames picture is very fast, therefore be trapped in the back frame picture mutual superposition that former frame picture in observer's eye and observer are seen, can make the display effect of former frame picture influence back one frame picture, thereby make picture produce smear.
Seeing also Fig. 3, is that prior art is improved the drive signal waveform figure that this LCD 100 produces a kind of driving method of smear.Wherein, " G1-Gn " is the oscillogram of a plurality of sweep signals, and " Vcom " provides the common electric voltage oscillogram on the public electrode 152, and " Vd " provides the oscillogram to the gray scale voltage of pixel electrode 151.
See also Fig. 1 and Fig. 3, this kind driving method that improves these LCD 100 generation smears comprises the steps:
A. a frame time T is divided into the very first time section A and the second time period B.
B. this scan drive circuit 11 produces a plurality of first sweep signals 391 continuously in very first time section A, provides this first sweep signal 391 to each horizontal scanning line 13 then successively.This first sweep signal 391 is high voltages, during a horizontal scanning line 13 is provided first sweep signal 391, this high voltage makes a plurality of thin film transistor (TFT)s 15 that are connected on this row all be in opening, that is, and and the drain electrode of a plurality of thin film transistor (TFT)s 15 on this row and source electrode conducting.
C. simultaneously, this data drive circuit 12 provides a plurality of gray scale voltage Vd that represent this frame image data PD to many data lines 14 at very first time section A, a plurality of then gray scale voltage Vd offer a plurality of pixel electrodes 151 by the source electrode and the drain electrode of a plurality of thin film transistor (TFT)s 15 on this row respectively, make a plurality of pixel cells 153 that are positioned on this horizontal scanning line 13 show and keep this frame image data PD at very first time section A.
D. this scan drive circuit 11 produces a plurality of second sweep signals 392 continuously in the second time period B, provides this second sweep signal 392 to each horizontal scanning line 13 then successively.This second sweep signal 392 is high voltages, during a horizontal scanning line 13 is provided second sweep signal 392, this high voltage makes a plurality of thin film transistor (TFT)s 15 that are connected on this row all be in opening, that is, and and the drain electrode of a plurality of thin film transistor (TFT)s 15 on this row and source electrode conducting.
E. this data drive circuit 12 provides black plug (black inserting) voltage of the black picture image data PD of representative to many data lines 14 simultaneously, a plurality of then black plug voltages offer a plurality of pixel electrodes 151 by the source electrode and the drain electrode of a plurality of thin film transistor (TFT)s 15 on this row respectively, make a plurality of pixel cells 153 that are positioned on this horizontal scanning line 13 show black picture in second time period.
Next frame repeats this operation.
In the above-mentioned driving method, because a black picture is arranged between former frame picture and back one frame picture show, so the former frame picture can not influence the demonstration of back one frame picture, it is more clear to adopt this kind mode that two frame pictures are shown, the smear phenomenon of prior art can not occur.So, because the principle of work of this data drive circuit 12 is complicated, in the second time period B, a view data PD of the black picture of representative deposits the time that bolt lock device 122 needs a plurality of data clock cycles altogether one by one in.
[summary of the invention]
In order to solve liquid crystal display-driving of the prior art, be necessary to provide a kind of LCD that drives simply and can make the no smear of picture demonstration than complicated problems.
In order to solve liquid crystal display-driving of the prior art, be necessary to provide a kind of driving method that drives simply and can make the LCD of the no smear of picture demonstration than complicated problems.
A kind of LCD comprises many sweep traces that are parallel to each other, many the data lines that are parallel to each other and intersect vertically with sweep trace insulation respectively, be positioned at multi-strip scanning line and many a plurality of thin film transistor (TFT)s that data line intersects and locates, a plurality of pixel cells, the scan driving circuit that is connected with this multi-strip scanning line, and a data drive circuit that is connected with these many data lines.Each thin film transistor (TFT) is connected with data line with sweep trace.Each pixel cell comprises a pixel electrode that is connected with this thin film transistor (TFT).This data drive circuit comprises a bolt lock device.This bolt lock device comprises a reset terminal.When a pulse signal was provided to this reset terminal, this data drive circuit produced a plurality of black frame insertion signals and offers this many data lines simultaneously.
A kind of driving method of LCD may further comprise the steps: a. is divided into the very first time section and second time period with a frame time; B. scan driving circuit produces in very first time section and provides one first sweep signal to each horizontal scanning line successively; C. this first sweep signal offers during each horizontal scanning line, this data drive circuit provides a plurality of liquid crystal pixel cells of the gray scale voltage of many pixel datas of representative to many these row of data line respectively, and a plurality of liquid crystal pixel cells that make this row are according to many pixel data display images; D. scan driving circuit produces in second time period and provides one second sweep signal to each horizontal scanning line successively; E., the reset terminal of one pulse signal to this bolt lock device is provided in second time period, and this data drive circuit provides a plurality of black frame insertion signals to many data lines in second time period simultaneously, makes a plurality of liquid crystal pixel cells of each row show black picture.
Compared to prior art, the bolt lock device of above-mentioned LCD comprises a reset terminal.When a pulse signal is provided to this reset terminal, this data drive circuit produces a plurality of black frame insertion signals and offers this many data lines simultaneously, therefore the view data of the black picture of representative need not deposit within the bolt lock device one by one, and this black plug operation only needs the time of a clock period, has simplified the black plug method of operating.
[description of drawings]
Fig. 1 is the synoptic diagram of the LCD of prior art.
Fig. 2 is the drive signal waveform figure of LCD shown in Figure 1.
Fig. 3 is that prior art is improved the drive signal waveform figure that LCD shown in Figure 1 produces a kind of driving method of smear.
Fig. 4 is the synoptic diagram of LCD one better embodiment of the present invention.
Fig. 5 is the drive signal waveform figure of LCD shown in Figure 4.
[embodiment]
Seeing also Fig. 4, is the synoptic diagram of LCD one better embodiment of the present invention.This LCD 200 comprises a top glass substrate (figure do not show), lower glass substrate (figure do not show), a liquid crystal layer two glass substrates between (scheme do not show), scan driving circuit 21, a data drive circuit 22 and a control circuit 27 staggered relatively with this top glass substrate.
This lower glass substrate comprises that many sweep traces that are parallel to each other 23, many are parallel to each other and the data line 24, a plurality of pixel electrode 251 that intersect vertically with these sweep trace 23 insulation respectively and be positioned at intersect a plurality of thin film transistor (TFT)s 25 at place of multi-strip scanning line 23 and many data lines 24.The grid of this thin film transistor (TFT) 25 is connected to this sweep trace 23, and its source electrode is connected to this data line 24, and its drain electrode is connected to this pixel electrode 251.
This top glass substrate comprises a plurality of public electrodes 252 that a plurality of and this pixel electrode 251 are relative and transparent.This public electrode can be made of the tin indium oxide material.Each pixel electrode 251, a public electrode 252 and the liquid crystal molecule that is clipped between this two electrode 251,252 constitute a pixel cell 253, and pixel cell 253 is minimum display units of this LCD 200.Usually, one stable common electric voltage is provided for all public electrodes 252, provide the GTG electricity that is produced according to external image data PD Vd to pixel electrode 251, then the liquid crystal molecule between two electrodes 251,252 reverses a special angle under the voltage difference of two electrodes 251,252, realizes that GTG shows.
This control circuit 27 comprises a clock circuit 271, is used to produce a data clock signal CLK3 and is provided to this data drive circuit 22, also produces a data clock signal CLK4 and is provided to this scan drive circuit 21.This control circuit 27 provides a view data PD to this data drive circuit 22 according to the external image data simultaneously.
This data drive circuit 22 comprises a bit shift register 221, a bolt lock device 222, an impact damper 223, a D/A conversion circuit 224 and an output state 225.This bolt lock device 222 comprises a reset terminal 26.This bit shift register 221 produces a plurality of control signal C1-CK (k is a natural number, the columns of its representative data line 24) according to data clock signal CLK3.
The principle of work of this data drive circuit 22 is described below:
When a pulse signal was provided to this reset terminal, this bolt lock device 222 was carried out homing action: all output terminals of this bolt lock device 222 all reset to low-voltage (the black picture image data of representative).This operation only needs a clock period.Therefore, when a pulse signal was provided to this reset terminal 26, this bolt lock device 222 was sent to this impact damper 223 simultaneously by the disposable view data with the black picture of a plurality of representatives of reset operation.223 view data with the black picture of all representatives that receive of this impact damper output to D/A conversion circuit 224 together.This D/A conversion circuit 224 will these a plurality of representatives the view data of black picture be transformed into a plurality of gray scale voltage Vd of the black picture of representative.This output state 225 then is to receive by the representative of D/A conversion circuit 224 outputs with mode arranged side by side to deceive a plurality of gray scale voltage Vd of picture, and many data lines 24 of a plurality of gray scale voltage Vd of picture to this LCD 200 are deceived in the output representative also arranged side by side of this output state 225.Wherein, the pulse signal that offers this reset terminal 26 is provided by this control circuit 27, and this pulse signal can be positive pulse signal or undersuing.
When not providing pulse signal to arrive this reset terminal 26, this bolt lock device 222 receives and stores many pixel data PD that exported by control circuit 27 successively according to this control signal C1-CK, deposit a view data PD in time that bolt lock device 222 needs k data clock period CLK3 altogether one by one, when bolt lock device 222 finish receive action after, this bolt lock device 222 is disposable to be sent to this impact damper 223 simultaneously with a view data PD.223 in this impact damper outputs to D/A conversion circuit 224 together with all view data PD that receive.This output state 225 then is a plurality of gray scale voltage Vd that receive a view data PD of representative who is exported by D/A conversion circuit 224 with mode arranged side by side, and this output state 225 is also exported many data lines 24 that a plurality of gray scale voltage Vd that represent a view data PD arrive this LCD 200 side by side.
Seeing also Fig. 5, is the drive signal waveform figure of present embodiment LCD 200." CLK4 " is the scan clock signal oscillogram, " G1-Gn " is a plurality of sweep signal oscillograms, " Vcom " provides the common electric voltage oscillogram on public electrode 252, " Vd " provides the gray scale voltage Vd oscillogram to pixel electrode 251, and " Reset " provides the pulse signal waveform figure to a reset terminal 26 of this bolt lock device 222.
See also Fig. 4 and Fig. 5, the driving method of this LCD 200 is described below:
A. a frame time is divided into the very first time section A and the second time period B.
B. this scan drive circuit 21 produces a plurality of first sweep signals 591 continuously in very first time section A, provides this first sweep signal 591 to each horizontal scanning line 23 then successively.This first sweep signal 591 is high voltages, during a horizontal scanning line 23 is provided sweep signal 591, this high voltage makes a plurality of thin film transistor (TFT)s 25 that are connected on this row all be in opening, that is, and and the drain electrode of a plurality of thin film transistor (TFT)s 25 on this row and source electrode conducting.
C. working as this horizontal scanning line 23 is provided during the sweep signal 291, this data drive circuit 22 provides a plurality of gray scale voltage Vd that represent this frame image data PD to many data lines 24 simultaneously, a plurality of then gray scale voltage Vd offer a plurality of pixel electrodes 251 by the source electrode and the drain electrode of a plurality of thin film transistor (TFT)s 25 on this row respectively, make a plurality of pixel cells 253 that are positioned on this horizontal scanning line 23 show and keep this frame image data PD at very first time section A.
D. this scan drive circuit 21 produces a plurality of second sweep signals 592 continuously in the second time period B, and this second sweep signal, 592 each horizontal scanning lines 23 are provided then successively.During a horizontal scanning line 23 was provided second sweep signal 592, a plurality of thin film transistor (TFT)s 25 on this row all were in opening.
E. simultaneously, control circuit 27 provides a positive pulse signal Reset reset terminal to this bolt lock device 222 in the second time period B, this bolt lock device 222 is carried out homing action, makes this scan drive circuit 21 export many data lines 24 of a plurality of gray scale voltage Vd of the black picture of representative to this LCD 200 in the second time period B.These a plurality of black plug voltages offer a plurality of pixel electrodes 251 by the source electrode and the drain electrode of a plurality of thin film transistor (TFT)s 25 on this row respectively then, make a plurality of pixel cells 253 that are positioned on this horizontal scanning line 23 show black picture in second time period.
Next frame repeats this operation.
In addition, this very first time section A can greater than, be less than or equal to this second time period B.Wherein section A accounts for 60% of a frame time very first time, and what wherein the second time period B accounted for a frame time 40% is a better embodiment.The very first time, section A accounted for 40% of a frame time, wherein the second time period B account for a frame time 60% for another better embodiment.
Because the bolt lock device 222 of this LCD 200 comprises a reset terminal.When a pulse signal is provided to this reset terminal 26, this data drive circuit 22 produces a plurality of black frame insertion signals and offers this many data lines 24 simultaneously, therefore the view data of the black picture of representative need not deposit within the bolt lock device 222 one by one, and this black plug operation only needs the time of a clock period, has simplified the black plug method of operating.
In addition,, can when switching on and shutting down, also provide a pulse signal Reset reset terminal respectively, make this LCD 200 show a black picture when start or before the shutdown, thereby eliminate the switching on and shutting down noise to this bolt lock device 222 in order to improve the switching on and shutting down noise.
Claims (13)
1. LCD, it comprises:
Many the sweep traces that are parallel to each other;
Many the data lines that are parallel to each other and intersect vertically with sweep trace insulation respectively;
A plurality of thin film transistor (TFT)s lay respectively at multi-strip scanning line and many data lines place that intersects, and each thin film transistor (TFT) is connected with data line with sweep trace respectively;
A plurality of liquid crystal pixel cells, each thin film transistor (TFT) is used to drive a pixel cell;
The scan driving circuit that is connected with these a plurality of sweep traces;
With the data drive circuit that these a plurality of data lines are connected, this data drive circuit comprises a bolt lock device;
It is characterized in that: this bolt lock device comprises a reset terminal, and when a pulse signal was provided to this reset terminal, this data drive circuit produced a plurality of black frame insertion signals and offers this a plurality of data lines simultaneously.
2. LCD as claimed in claim 1 is characterized in that: this liquid crystal pixel cells comprises a pixel electrode, a public electrode and is clipped in two interelectrode liquid crystal molecules.
3. LCD as claimed in claim 2 is characterized in that: the grid of this thin film transistor (TFT) is connected to sweep trace, and its source electrode is connected to data line, and its drain electrode is connected to this pixel electrode.
4. LCD as claimed in claim 1, it further comprises a control circuit, is used to produce this pulse signal.
5. LCD as claimed in claim 4 is characterized in that: this control circuit further comprises a clock circuit, and it produces respectively and provides a clock signal to this scan drive circuit and this data drive circuit.
6. the driving method of LCD as claimed in claim 1 comprises the steps:
A. a frame time is divided into the very first time section and second time period;
B. scan driving circuit produces in very first time section and provides one first sweep signal to each horizontal scanning line successively;
C. this first sweep signal offers during each horizontal scanning line, and this data drive circuit provides the gray scale voltage of a plurality of view data of representative to a plurality of data lines respectively, and a plurality of liquid crystal pixel cells that make each row are according to a plurality of view data display images;
D. scan driving circuit produces in second time period and provides one second sweep signal to each horizontal scanning line successively; With
E., the reset terminal of one pulse signal to this bolt lock device is provided in second time period, and this data drive circuit provides a plurality of black frame insertion signals to a plurality of data lines in second time period simultaneously, makes a plurality of liquid crystal pixel cells of each row show black picture successively.
7. the driving method of LCD as claimed in claim 6, it is characterized in that: this very first time section is greater than this second time period.
8. the driving method of LCD as claimed in claim 7, it is characterized in that: 60%, the second time period of this very first time Duan Zhanyi frame time accounts for 40% of a frame time.
9. the driving method of LCD as claimed in claim 8, it is characterized in that: this very first time section is less than this second time period.
10. the driving method of LCD as claimed in claim 9, it is characterized in that: 40%, the second time period of this very first time Duan Zhanyi frame time accounts for 60% of a frame time.
11. the driving method of LCD as claimed in claim 6 is characterized in that: this very first time section equals this very first time section.
12. the driving method of LCD as claimed in claim 6 is characterized in that: when this LCD shutdown, provide the reset terminal of a pulse signal, make this LCD before shutdown, show a black picture to this bolt lock device.
13. the driving method of LCD as claimed in claim 6 is characterized in that: when this LCD start, provide the reset terminal of a pulse signal, make this LCD when start, show a black picture to this bolt lock device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101000654A CN100444235C (en) | 2005-09-30 | 2005-09-30 | Liquid-crystal display device and its driving circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101000654A CN100444235C (en) | 2005-09-30 | 2005-09-30 | Liquid-crystal display device and its driving circuit |
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| CN1941053A true CN1941053A (en) | 2007-04-04 |
| CN100444235C CN100444235C (en) | 2008-12-17 |
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| CNB2005101000654A Expired - Fee Related CN100444235C (en) | 2005-09-30 | 2005-09-30 | Liquid-crystal display device and its driving circuit |
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| CN102054425A (en) * | 2009-11-06 | 2011-05-11 | 三星电子株式会社 | Display driver, method of operating the same, and display device including the same |
| CN101311782B (en) * | 2007-05-25 | 2011-07-20 | 奇美电子股份有限公司 | Gray scale voltage generation circuit and its operation method |
| CN101604501B (en) * | 2008-06-12 | 2012-04-18 | 奇景光电股份有限公司 | Gate driver and display panel utilizing the same |
| US8179359B2 (en) | 2008-05-09 | 2012-05-15 | Au Optronics Corp. | Analog buffer circuit capable of compensating threshold voltage variation of transistor |
| CN108172182A (en) * | 2017-12-25 | 2018-06-15 | 昆山龙腾光电有限公司 | Black picture is inserted into circuit, display device and electronic equipment |
| CN108351543A (en) * | 2015-10-26 | 2018-07-31 | 奥特司科技株式会社 | Polymer network type liquid crystal display device and liquid crystal display method |
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| JP3734629B2 (en) * | 1998-10-15 | 2006-01-11 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Display device |
| JP4161511B2 (en) * | 2000-04-05 | 2008-10-08 | ソニー株式会社 | Display device, driving method thereof, and portable terminal |
| JP4545276B2 (en) * | 2000-05-01 | 2010-09-15 | 三菱電機株式会社 | Liquid crystal display |
| JP2003280600A (en) * | 2002-03-20 | 2003-10-02 | Hitachi Ltd | Display device, and its driving method |
| CA2458214A1 (en) * | 2002-03-28 | 2003-10-09 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal display device |
| JP2004219938A (en) * | 2003-01-17 | 2004-08-05 | Fujitsu Ltd | Method for driving liquid crystal display device and liquid crystal display device |
| JP4029053B2 (en) * | 2003-02-03 | 2008-01-09 | シャープ株式会社 | Liquid crystal display |
| JP3958322B2 (en) * | 2004-01-28 | 2007-08-15 | シャープ株式会社 | Shift register and active matrix display device |
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| CN101311782B (en) * | 2007-05-25 | 2011-07-20 | 奇美电子股份有限公司 | Gray scale voltage generation circuit and its operation method |
| US8179359B2 (en) | 2008-05-09 | 2012-05-15 | Au Optronics Corp. | Analog buffer circuit capable of compensating threshold voltage variation of transistor |
| CN101604501B (en) * | 2008-06-12 | 2012-04-18 | 奇景光电股份有限公司 | Gate driver and display panel utilizing the same |
| CN102054425A (en) * | 2009-11-06 | 2011-05-11 | 三星电子株式会社 | Display driver, method of operating the same, and display device including the same |
| CN108351543A (en) * | 2015-10-26 | 2018-07-31 | 奥特司科技株式会社 | Polymer network type liquid crystal display device and liquid crystal display method |
| CN108351543B (en) * | 2015-10-26 | 2021-10-08 | 凸版印刷株式会社 | Polymer network type liquid crystal display device and liquid crystal display method |
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| CN108172182A (en) * | 2017-12-25 | 2018-06-15 | 昆山龙腾光电有限公司 | Black picture is inserted into circuit, display device and electronic equipment |
| CN108986764A (en) * | 2018-10-10 | 2018-12-11 | 惠科股份有限公司 | Display device and its method for eliminating shutdown ghosting image |
| CN112382226A (en) * | 2020-11-27 | 2021-02-19 | Tcl华星光电技术有限公司 | Data driving chip and display device |
| CN112382226B (en) * | 2020-11-27 | 2022-04-26 | Tcl华星光电技术有限公司 | Data driving chip and display device |
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