CN101174039A - LCD panel and its driving circuit and driving method - Google Patents
LCD panel and its driving circuit and driving method Download PDFInfo
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- CN101174039A CN101174039A CNA2006100634233A CN200610063423A CN101174039A CN 101174039 A CN101174039 A CN 101174039A CN A2006100634233 A CNA2006100634233 A CN A2006100634233A CN 200610063423 A CN200610063423 A CN 200610063423A CN 101174039 A CN101174039 A CN 101174039A
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Abstract
The invention relates to a liquid crystal display panel drive circuit, which comprises a plurality of parallel scanning lines, a plurality of parallel data lines insulated and intersected with the scanning lines, a scanning drive circuit, a data drive circuit, a signal output circuit and a select output circuit. The scanning lines and the data lines define a plurality of image element units. The scanning drive circuit is used to output a plurality of scanning signals. The data drive circuit is used to output a plurality of data signals. The signal output circuit is used to output a plurality of signals, and the signals are black signals and white signals which are arranged at intervals with frame as unit. The select output circuit is used to receive the data signals output by the data drive circuit and the signals output by the signal output circuit, and to select and output the black signals or the data signals to the data lines according to the black signals or the white signals received. Moreover, the invention also provides a liquid crystal display panel adopting the drive circuit, and the drive method of the liquid crystal display panel.
Description
Technical field
The invention relates to a kind of display panels and driving circuit thereof and driving method.
Background technology
Because advantages such as display panels has gently, approaches, power consumption is little are widely used in modernized information equipments such as TV, notebook computer, mobile phone, personal digital assistant.At present, the application on the display panels TV market is more and more important.Yet liquid crystal itself is the coefficient of viscosity material, causes the reaction velocity of LCD to contend with CRT monitor.
Seeing also Fig. 1, is a kind of liquid crystal display panel drive circuit synoptic diagram of prior art.This liquid crystal display panel drive circuit 10 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, a plurality of thin film transistor (TFT) that is positioned at this sweep trace 13 and this data line 14 infalls (thin film transistor, TFT) 15, a plurality of pixel electrode 16, scan driving circuit 11 and a data drive circuit 12.This scan drive circuit 11 is used for exporting a plurality of sweep signals to this sweep trace 13, and this data drive circuit 12 is used for exporting a plurality of data-signals to this data line 14.
The grid of this thin film transistor (TFT) 15 (not indicating) is connected to this sweep trace 13, and source electrode (not indicating) is connected to this data line 14, and drain electrode (not indicating) is connected to this pixel electrode 16.This sweep trace 13 and this data line 14 define a plurality of pixel cells (not indicating).
Seeing also Fig. 2, is the drive signal waveform figure of this liquid crystal display panel drive circuit 10.Wherein, " G1-Gn " is a plurality of sweep signal oscillograms, and " Vd " is a plurality of data signal waveforms figure of this data drive circuit output.The driving method of this liquid crystal display panel drive circuit 10 comprises the steps::
A. this scan drive circuit 11 produces a plurality of sweep signals 19 continuously in a frame (frame) in the time, and is applied to each horizontal scanning line 13 successively.This sweep signal 19 is high voltages.During a horizontal scanning line 13 was applied in sweep signal 19, high voltage made the thin film transistor (TFT) 15 that is connected in this horizontal scanning line 13 all be in opening, that is, and and the drain electrode of the thin film transistor (TFT) 15 on this row and source electrode conducting.
B. simultaneously, during a horizontal scanning line 13 is applied in sweep signal 19, this data drive circuit 12 apply represent a frame pixel data PD a plurality of data-signal Vd to this data line 14, this data-signal Vd is applied to this pixel electrode 16 via the source electrode and the drain electrode of the thin film transistor (TFT) 15 of these row respectively then.
Back one frame scan signal 19 ' be applied to before this horizontal scanning line 13, the pixel data PD that is positioned at the pixel cell demonstration on this horizontal scanning line 13 remains unchanged.
Back one frame scan signal 19 ' be applied to during this horizontal scanning line 13, high voltage makes the thin film transistor (TFT) 15 that is connected in this horizontal scanning line 13 all be in opening, simultaneously, a plurality of data-signal Vd ' of a frame pixel data PD ' were to this data line 14 after this data drive circuit 12 applied and represents, then, this data-signal Vd ' is applied to this pixel electrode 16 via the source electrode and the drain electrode of the thin film transistor (TFT) 15 of this row respectively, makes the display update that is positioned at the pixel cell on this horizontal scanning line 13 be back one frame pixel data PD '.
Because the response speed of the liquid crystal molecule of display panels (figure does not show) under driven is limited, it can not be followed data-signal Vd ' and be torqued into special angle in a frame time, sometimes even need two frames or above time to be torqued into special angle with data-signal Vd '.Therefore, the display panels of this liquid crystal display panel drive circuit driving 10 is easy to generate smear when frame update.
Summary of the invention
In order to solve the problem of prior art display panels smear, be necessary to provide the liquid crystal display panel drive circuit that can effectively overcome the display panels smear.
Also be necessary to provide a kind of display panels that adopts above-mentioned driving circuit.
Also be necessary to provide a kind of driving method of above-mentioned display panels.
A kind of liquid crystal display panel drive circuit, it comprises that many parallel scanning beams, many are parallel and select output circuit with data line, scan driving circuit, a data drive circuit, a signal output apparatus and that this sweep trace insulation is intersected.This sweep trace and data line define a plurality of pixel cells.This scan drive circuit is used for exporting a plurality of sweep signals.This data drive circuit is used for exporting a plurality of data-signals.This signal output apparatus is used for exporting a plurality of signals, and this signal is for the frame being the black and white signal that arrange the unit gap.This selection output circuit is used for receiving the data-signal of this data drive circuit output and the signal of this signal output apparatus output, and selects output black signal or data-signal to this data line according to black signal that receives or white signal.
A kind of display panels, it comprises one first substrate, second substrate, liquid crystal layer and a liquid crystal display panel drive circuit this two substrate between relative with this first substrate.This liquid crystal display panel drive circuit comprises that many parallel scanning beams, many are parallel and select output circuit with data line, scan driving circuit, a data drive circuit, a signal output apparatus and that this sweep trace insulation is intersected.This sweep trace and data line define a plurality of pixel cells.This scan drive circuit is used for exporting a plurality of sweep signals.This data drive circuit is used for exporting a plurality of data-signals.This signal output apparatus is used for exporting a plurality of signals, and this signal is for the frame being the black and white signal that arrange the unit gap.This selection output circuit is used for receiving the data-signal of this data drive circuit output and the signal of this signal output apparatus output, and selects output black signal or data-signal to this data line according to black signal that receives or white signal.
A kind of driving method of above-mentioned display panels, it comprises the steps: that this scan drive circuit of a. produces a plurality of sweep signals in a frame, and applies sweep signal successively to each horizontal scanning line; B. simultaneously, this data drive circuit is exported a plurality of data-signals and is selected output circuit to this, and this signal output apparatus is exported a plurality of black signals or white signal is selected output circuit to this, and this selects output circuit to select output black signal or data-signal to this data line according to black signal that receives or white signal; C. this scan drive circuit produces a plurality of sweep signals in next frame, and applies sweep signal successively to each horizontal scanning line; D. simultaneously, this data drive circuit repeats to export a plurality of data-signals of step b and selects output circuit to this, and a plurality of signals opposite with step b of this signal output apparatus output are selected output circuit to this, and this selects output circuit to select output black signal or data-signal to this data line according to black signal that receives or white signal.
Compared to prior art; the signal output apparatus of this display panels is that unit exports a plurality of spaced black signals and white signal with the frame; and should select output circuit to select output black signal or data-signal to data line according to black signal that receives or white signal; making each pixel cell all is that unit period shows normal pictures and black picture with the frame; be that each pixel cell all has a black picture between a former frame picture and a back frame picture, thereby make the former frame picture of each pixel cell can not influence the demonstration of a frame picture afterwards.Therefore, this display panels can not produce the smear phenomenon when frame updating.
Description of drawings
Fig. 1 is a kind of liquid crystal display panel drive circuit synoptic diagram of prior art.
Fig. 2 is the drive signal waveform figure of liquid crystal display panel drive circuit shown in Figure 1.
Fig. 3 is the structural representation of display panels of the present invention.
Fig. 4 is the synoptic diagram of driving circuit one better embodiment of display panels shown in Figure 3.
Fig. 5 is the synoptic diagram of the predefined black and white hybrid picture of the buffer of liquid crystal display panel drive circuit shown in Figure 4.
Fig. 6 is the drive signal waveform figure of display panels shown in Figure 3.
Embodiment
Seeing also Fig. 3, is the structural representation of display panels of the present invention.This display panels 2 comprises one first substrate 201, one and the liquid crystal layer 203 of second substrate 202 and between this two substrate 201,202 that be oppositely arranged of this first substrate 201.Usually, this display panels 2 needs one drive circuit to drive.
Seeing also Fig. 4, is the synoptic diagram of driving circuit one better embodiment of this display panels 2.This liquid crystal display panel drive circuit 20 comprises that many sweep traces that are parallel to each other 23, many are parallel to each other and selects output circuit 26, a plurality of on-off element 27 and a plurality of reverser 28 with data line 24, a plurality of this sweep trace 23 that is positioned at that these sweep trace 23 insulation intersect vertically with thin film transistor (TFT) 230, a plurality of pixel electrode 231, scan driving circuit 21, a data drive circuit 22, a buffer 25, of these data line 24 infalls.
This scan drive circuit 21 is used for exporting a plurality of sweep signals.This data drive circuit 22 comprises a plurality of signal output parts 221, and this signal output part 221 is used for exporting a plurality of data-signals.This sweep trace 23 defines a plurality of pixel cells 240 with data line 24.
This buffer 25 is used for defining a width of cloth black and white hybrid picture for this display panels 2 in advance, the black or the white signal of each pixel cell 240 of this black and white hybrid picture correspondence of access, and utilize this reverser 28 that the black signal of each pixel cell 240 is converted to white signal, or white signal is converted to black signal every a frame.Wherein, this black signal is used for making this pixel cell 240 to show black picture, and this white signal is used for making this pixel cell 240 to show normal pictures, so each pixel cell 240 all is that unit period shows normal pictures and black picture with the frame.
This selection output circuit 26 comprises a plurality of selection output units 260, and this selection output unit 260 comprises a first input end 261, one second input end 262 and a selection output terminal 263.This first input end 261 receives the data-signal of signal output part 221 outputs of this data drive circuit 22.This second input end 262 receives black, the white signal of these buffer 25 direct outputs or receives the opposite signal of this buffer 25 via these reverser 28 outputs.This selects output terminal 263 outputting data signals or black signal to this data line 24.This on-off element 27 is convenient to the direct output black of these buffer 25 selections, white signal to this second input end 262, still exports opposite signal to this second input end 262 via this reverser 28.
This thin film transistor (TFT) 230 comprises a grid (not indicating), one source pole (not indicating) and a drain electrode (not indicating).This grid is connected to this sweep trace 23, and source electrode is connected to this data line 24, and drain electrode is connected to this pixel electrode 231.
Seeing also Fig. 5, is that this buffer 25 is these display panels 2 predefined black and white hybrid picture synoptic diagram.The odd column pixel cell 240 of this black and white hybrid picture shows black, even column pixel cell 240 display white.Therefore, the signal of the odd column pixel cell 240 of these buffer 25 accesses is a black signal, and the signal of even column pixel cell 240 is a white signal.
Be example with black and white hybrid picture shown in Figure 5 below, describe the driving method of this display panels.Seeing also Fig. 6, is the drive signal waveform figure of this display panels 2.Wherein, " G
1-G
n" be a plurality of sweep signal oscillograms of these scan drive circuit 21 outputs, " V
D1-V
Dm" be a plurality of data signal waveforms figure of signal output part 221 outputs of this data drive circuit 22, " V
B1-V
Bm" be a plurality of black or the white signal oscillogram of these buffer 25 outputs.The driving method of this display panels 2 comprises the steps::
A. this scan drive circuit 21 produces a plurality of sweep signals 29 continuously in first frame (start frame), and applies sweep signal 29 successively to each horizontal scanning line 23.This sweep signal 29 is high voltages.During a horizontal scanning line 23 was applied in sweep signal 29, high voltage made the thin film transistor (TFT) 230 that is connected in this horizontal scanning line 23 all be in opening, that is, and and the drain electrode of the thin film transistor (TFT) 230 on this row and source electrode conducting.
B. simultaneously, the signal output part 221 of this data drive circuit 22 is exported a plurality of data-signal V in this frame
D1, V
D2... V
DmSelect the first input end 261 of output unit 260 to this, and this buffer 25 is also directly exported a plurality of black or white signal V in this frame
B1, V
B2... V
BmSelect second input end 262 of output unit 260 to this.If this second input end 262 is transfused to black signal, then should select output terminal 263 output black signals to data line 24; If this second input end 262 is transfused to white signal, then should select output terminal 263 outputting data signals to data line 24.Then, this data-signal or black signal are applied to this pixel electrode 231 via the source electrode and the drain electrode of thin film transistor (TFT) 230, make the odd column pixel cell 240 of this display panels 2 show black picture, and even column pixel cell 240 shows normal pictures.
C. this scan drive circuit 21 in second frame, produce continuously a plurality of sweep signals 29 ', and apply sweep signal 29 ' successively to each horizontal scanning line 23.This sweep signal 29 ' be a high voltage.When a horizontal scanning line 23 be applied in sweep signal 29 ' during, high voltage makes the thin film transistor (TFT) 230 that is connected on this row all be in opening, that is, the drain electrode of the thin film transistor (TFT) 230 on this row and source electrode conducting.
D. simultaneously, this data drive circuit 22 repeats to export a plurality of data-signal V of first frame in this frame
D1, V
D2... V
DmSelect the first input end 261 of output unit 260 to this, and this buffer 25 is also selected second input end 262 of output unit 260 via these reverser 28 outputs signal opposite with first frame to this in this frame.If this second input end 262 is transfused to black signal, then should select output terminal 263 output black signals to data line 24; If this second input end 262 is transfused to white signal, then should select output terminal 263 outputting data signals to data line 24.Then, this data-signal or black signal are applied to this pixel electrode 231 via the source electrode and the drain electrode of thin film transistor (TFT) 230, make the odd column pixel cell 240 that is positioned at this display panels 2 show normal pictures, and even column pixel cell 240 shows black picture.The normal pictures sequential that the normal pictures that the even column pixel cell 240 of this first frame shows and the odd column pixel cell 240 of this second frame show is mixed into a width of cloth picture.
Two frames repeat above-mentioned steps down.
Because the buffer 25 of this liquid crystal display panel drive circuit 20 and reverser 28 form a signal output apparatus.This signal output apparatus is that unit exports a plurality of spaced black signals and white signal with the frame; and should select output circuit 26 to select outputting data signals or black signal to data line 24 according to black signal that receives or white signal; making each pixel cell 240 all is that unit period shows normal pictures and black picture with the frame; be that each pixel cell 240 all has a black picture between a former frame picture and a back frame picture, thereby make the former frame picture of each pixel cell 240 can not influence the demonstration of a frame picture afterwards.Therefore, this display panels 2 can not produce the smear phenomenon when frame updating.
It is described that display panels 2 of the present invention is not limited to above embodiment, as: this buffer 25 also can be these display panels 2 pre-defined one complete black pictures, access should be deceived the black signal of each pixel cell 240 of picture correspondence entirely, this moment, the driving method and the above-mentioned driving method of this display panels 2 were roughly the same, and its key distinction is: this buffer 25 is directly exported second input end 262 of a plurality of black signals to this selection output unit 260 among the step b.Then, this black signal is applied to this pixel electrode 231 via the source electrode and the drain electrode of thin film transistor (TFT) 230, makes all pixel cells 240 of this display panels 2 show black picture.This buffer 25 is selected second input end 262 of output unit 260 via a plurality of white signals of these reverser 28 outputs to this in the steps d.Then, data-signal is applied to this pixel electrode 231 via the source electrode and the drain electrode of thin film transistor (TFT) 230, makes all pixel cells 240 of this display panels 2 show normal pictures.
This black and white hybrid picture also can be other arbitrary shape; for example this black and white hybrid picture can show black for odd-numbered line pixel cell 240; even number line pixel cell 240 display white only guarantee that it all is that unit period shows that normal pictures and black picture get final product with the frame that this buffer 25 utilizes this reverser 28 to make each pixel cell 240.
Claims (10)
1. liquid crystal display panel drive circuit, it comprises many parallel scanning beams, many parallel and data lines that intersect with the insulation of this sweep trace, a scan driving circuit and a data drive circuit, this sweep trace and data line define a plurality of pixel cells, this scan drive circuit is used for exporting a plurality of sweep signals, this data drive circuit is used for exporting a plurality of data-signals, it is characterized in that: this liquid crystal display panel drive circuit further comprises a signal output apparatus and a selection output circuit, this signal output apparatus is used for exporting a plurality of signals, this signal is for the frame being the black and white signal that arrange the unit gap, this selection output circuit is used for receiving the data-signal of this data drive circuit output and the signal of this signal output apparatus output, and selects output black signal or data-signal to this data line according to black signal that receives or white signal.
2. liquid crystal display panel drive circuit as claimed in claim 1, it is characterized in that: this signal output apparatus comprises a plurality of reversers and a buffer, this buffer is used for the black full picture of a pre-defined width of cloth, access should be deceived the black signal of each pixel cell of picture correspondence and the black signal and the white signal that cooperate this reverser to arrange for the unit output gap with the frame entirely.
3. liquid crystal display panel drive circuit as claimed in claim 2, it is characterized in that: this selection output circuit comprises a plurality of selection output units, this selection output unit comprises a first input end, one second input end and a selection output terminal, this first input end receives the data-signal of this data drive circuit output, this second input end receives spaced black signal and the white signal that this buffer cooperates this reverser output, and this selects output terminal to select output black signal or data-signal to this data line according to black signal that receives or white signal.
4. liquid crystal display panel drive circuit as claimed in claim 3, it is characterized in that: this liquid crystal display panel drive circuit further comprises a plurality of on-off elements, is used for making this buffer to select direct output black signal to export white signal to this second input end to this second input end or via this reverser.
5. liquid crystal display panel drive circuit as claimed in claim 1, it is characterized in that: this signal output apparatus comprises a plurality of reversers and a buffer, this buffer is used for a pre-defined width of cloth black and white hybrid picture, the black or the white signal of each pixel cell of this black and white hybrid picture correspondence of access, and the black signal and the white signal that cooperate this reverser to arrange for the unit output gap with the frame.
6. liquid crystal display panel drive circuit as claimed in claim 5 is characterized in that: this black and white hybrid picture shows black and even number line pixel cell display white for the odd column pixel cell shows black and even column pixel cell display white or odd-numbered line pixel cell.
7. liquid crystal display panel drive circuit as claimed in claim 5, it is characterized in that: this selection output circuit comprises a plurality of selection output units, this selection output unit comprises a first input end, one second input end and a selection output terminal, this first input end receives the data-signal of this data drive circuit output, this second input end receives spaced black signal and the white signal that this buffer cooperates this reverser output, and this selects output terminal to select output black signal or data-signal to this data line according to black signal that receives or white signal.
8. liquid crystal display panel drive circuit as claimed in claim 7, it is characterized in that: this liquid crystal display panel drive circuit further comprises a plurality of on-off elements, is used for making this buffer to select direct output black or white signal to export opposite signal to this second input end to this second input end or via this reverser.
9. display panels, it comprises one first substrate, one second substrate relative with this first substrate, one a liquid crystal layer and a liquid crystal display panel drive circuit between this two substrate, this liquid crystal display panel drive circuit comprises many parallel scanning beams, many parallel and data lines that intersect with the insulation of this sweep trace, a scan driving circuit and a data drive circuit, this sweep trace and data line define a plurality of pixel cells, this scan drive circuit is used for exporting a plurality of sweep signals, this data drive circuit is used for exporting a plurality of data-signals, it is characterized in that: this display panels further comprises a signal output apparatus and a selection output circuit, this signal output apparatus is used for exporting a plurality of signals, this signal is for the frame being the black and white signal that arrange the unit gap, this selection output circuit is used for receiving the data-signal of this data drive circuit output and the signal of this signal output apparatus output, and selects output black signal or data-signal to this data line according to black signal that receives or white signal.
10. the driving method of a display panels as claimed in claim 9, it comprises the steps:
A. this scan drive circuit produces a plurality of sweep signals in a frame, and applies sweep signal successively to each horizontal scanning line;
B. simultaneously, this data drive circuit is exported a plurality of data-signals and is selected output circuit to this, and this signal output apparatus is exported a plurality of black signals or white signal is selected output circuit to this, and this selects output circuit to select output black signal or data-signal to this data line according to black signal that receives or white signal;
C. this scan drive circuit produces a plurality of sweep signals in next frame, and applies sweep signal successively to each horizontal scanning line;
D. simultaneously, this data drive circuit repeats to export a plurality of data-signals of step b and selects output circuit to this, and a plurality of signals opposite with step b of this signal output apparatus output are selected output circuit to this, and this selects output circuit to select output black signal or data-signal to this data line according to black signal that receives or white signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100634233A CN100516993C (en) | 2006-11-01 | 2006-11-01 | LCD panel and its driving circuit and driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100634233A CN100516993C (en) | 2006-11-01 | 2006-11-01 | LCD panel and its driving circuit and driving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101174039A true CN101174039A (en) | 2008-05-07 |
| CN100516993C CN100516993C (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100634233A Expired - Fee Related CN100516993C (en) | 2006-11-01 | 2006-11-01 | LCD panel and its driving circuit and driving method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013155731A1 (en) * | 2012-04-20 | 2013-10-24 | 深圳市华星光电技术有限公司 | Display panel and 3d display device |
| CN104505031A (en) * | 2014-09-19 | 2015-04-08 | 深圳市华星光电技术有限公司 | Display panel and drive method thereof |
| CN105788546A (en) * | 2015-01-09 | 2016-07-20 | 株式会社日本显示器 | Liquid crystal display device |
| CN105788545A (en) * | 2015-01-09 | 2016-07-20 | 株式会社日本显示器 | Liquid crystal display device |
| CN105957483A (en) * | 2016-06-27 | 2016-09-21 | 深圳市国显科技有限公司 | Method for solving shutdown image sticking of tablet computer liquid crystal display screen |
| CN106066739A (en) * | 2016-07-29 | 2016-11-02 | 厦门天马微电子有限公司 | Array base palte, the display floater comprising it and display device |
-
2006
- 2006-11-01 CN CNB2006100634233A patent/CN100516993C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013155731A1 (en) * | 2012-04-20 | 2013-10-24 | 深圳市华星光电技术有限公司 | Display panel and 3d display device |
| CN104505031A (en) * | 2014-09-19 | 2015-04-08 | 深圳市华星光电技术有限公司 | Display panel and drive method thereof |
| CN104505031B (en) * | 2014-09-19 | 2017-06-27 | 深圳市华星光电技术有限公司 | Display panel and its driving method |
| CN105788546A (en) * | 2015-01-09 | 2016-07-20 | 株式会社日本显示器 | Liquid crystal display device |
| CN105788545A (en) * | 2015-01-09 | 2016-07-20 | 株式会社日本显示器 | Liquid crystal display device |
| CN105788545B (en) * | 2015-01-09 | 2018-06-22 | 株式会社日本显示器 | Liquid crystal display device |
| CN105788546B (en) * | 2015-01-09 | 2018-11-06 | 株式会社日本显示器 | Liquid crystal display device |
| CN105957483A (en) * | 2016-06-27 | 2016-09-21 | 深圳市国显科技有限公司 | Method for solving shutdown image sticking of tablet computer liquid crystal display screen |
| CN106066739A (en) * | 2016-07-29 | 2016-11-02 | 厦门天马微电子有限公司 | Array base palte, the display floater comprising it and display device |
| CN106066739B (en) * | 2016-07-29 | 2019-04-26 | 厦门天马微电子有限公司 | Array substrate, display panel and display device comprising it |
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|---|---|
| CN100516993C (en) | 2009-07-22 |
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