CN1797527A - Method for driving LCD faceplate in active matrix - Google Patents
Method for driving LCD faceplate in active matrix Download PDFInfo
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- CN1797527A CN1797527A CN 200410091827 CN200410091827A CN1797527A CN 1797527 A CN1797527 A CN 1797527A CN 200410091827 CN200410091827 CN 200410091827 CN 200410091827 A CN200410091827 A CN 200410091827A CN 1797527 A CN1797527 A CN 1797527A
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Abstract
The invention discloses a method for driving an active matrix liquid crystal display (LCD) panel, providing a data signal to plural pixel electrodes on a LCD panel to make plural pixels display an image and comprising the steps of: firstly dividing each frame period into display period and black insertion period; generating a grey scale voltage which makes the integration of light transmission quantity of a pixel in the display period correspond to image data; successively, supplying the grey scale voltage to the pixel electrodes in the display period; and finally supplying a reset voltage to the pixel electrodes to make the pixels return to a specific initial black state in the black insertion period. The invention can effectively improve the dynamic display effect of a LCD panel.
Description
[technical field]
The present invention relates to a kind of driving method of matrix liquid crystal display panel, relate in particular to a kind of driving method that can make the initiative matrix liquid crystal display panel of dynamic menu clear display.
[background technology]
Advantage such as display panels has gently, approaches, power consumption is little is widely used in modernized information equipments such as TV, notebook, computing machine, mobile phone, personal digital assistant.At present, the application on the display panels TV market is more and more important, and still, liquid crystal itself is the viscosity material, causes its response speed to contend with cathode-ray tube display.In the initiative matrix liquid crystal display panel, remove outside the time of on-off element Push And Release, liquid crystal panel switches the required response time in GTG all need to satisfy less than 16.7ms, otherwise can influence dynamic image quality.
A kind of initiative matrix liquid crystal display panel of prior art can be with reference to figure 1, this initiative matrix liquid crystal display panel 100 comprises n (0～n-1) row scan electrode 101 parallel to each other, m (0～m-1) row parallel to each other and with n line scanning electrode 101 vertically insulated crossing signal electrodes 102, this initiative matrix liquid crystal display panel 100 comprises that further (Thin Film Transistor TFT) 104 drives pixel electrode 103 as on-off element to a plurality of thin film transistor (TFT)s.These a plurality of thin film transistor (TFT)s 104 are positioned at the intersection of scan electrode 101 and signal electrode 102, the grid 1040 of thin film transistor (TFT) 104 is received scan electrode 101, source electrode 1041 is connected to signal electrode 102, drain electrode 1042 is connected to pixel electrode 103, each row comprises m pixel electrode 103, and this pixel electrode 103 forms an electric capacity 107 with public electrode 105.
The driving method of this display panels 100 please refer to Fig. 2, Fig. 3 and Fig. 4, and Fig. 2 is thin film transistor (TFT) signal waveform figure, and Fig. 3 is a thin film transistor (TFT) source voltage signal waveforms, and Fig. 4 is the pixel electrode voltage signal waveforms.Please also refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, gate drive apparatus (figure does not show) provides scan voltage V
gThe grid 1040 of drive thin film transistors 104, source electrode driving device (figure does not show) provides a signal voltage V
dThe source electrode 1041 of drive thin film transistors 104 is at scanning voltage V
gUnder the control, t
1Thin film transistor (TFT) 104 is opened signal voltage V constantly
d Source electrode 1041, drain electrode 1042 by thin film transistor (TFT) 104 offer pixel electrode 103, t
2Thin film transistor (TFT) 104 cuts out voltage V constantly
dKept by electric capacity 107, up to thin film transistor (TFT) 104 at t
3Till opening constantly.According to pixel voltage waveform shown in Figure 4, pixel voltage is with the voltage V of source electrode 1041
dVariation become the voltage V of same amplitude
p, during the first frame picture, i.e. t
1～t
3During this time, pixel voltage is Vp
1, t
3The first frame picture shows end constantly, and during the next frame picture showed, pixel voltage was with the voltage V of source electrode 1041
dVariation become the voltage V of another amplitude
P2
Because the viscous effect of liquid crystal causes the liquid crystal reverse speed slower, with a frame time 16.7ms is example, the liquid crystal molecule of pixel can not arrive needed GTG brightness under the driven of pixel electrode 103 at once in a frame time, the image of the residual former frame picture of meeting shows in the human eye vision, the image that causes the former frame picture can influence back one frame picture shows, so the display panels of prior art is fuzzyyer when showing dynamic menu.
The GTG control mode of this initiative matrix liquid crystal display panel is a voltage control mode, and the gray scale of image is by the size decision of voltage, this signal voltage V
dContinue the GTG of the time decision image of a frame, because the influence of resistance capacitance in the circuit unit, the grid of thin film transistor (TFT) is to scanning voltage V
gCan not respond rapidly, have the regular hour to postpone, so this kind GTG control mode makes picture the phenomenon of fuzzy pictures can occur when dynamically showing.
[summary of the invention]
The technical matters that the present invention solves provides a kind of driving method that can make the initiative matrix liquid crystal display panel of the clear demonstration of dynamic menu.
The invention provides a kind of driving method of initiative matrix liquid crystal display panel, this method a plurality of pixel electrodes of signal of giving information to a display panels, make a plurality of pixel display images that are connected with these a plurality of pixel electrodes, this method comprises the steps: at first each frame time to be divided into display time interval and black plug period, produce a gray scale voltage then, this voltage makes the integration of the light amount of penetrating in display time interval of a pixel corresponding with view data, next provide the pixel electrode of this gray scale voltage at display time interval to this display panels, provide a recovery voltage to this pixel electrode in this black plug period at last, make this pixel get back to a specific initial black attitude in the period at black plug.
Compared with prior art, in the type of drive that the present invention adopts, this black plug provides a black rank voltage to make liquid crystal panel get back to black scalariform attitude before next frame in the period, therefore, be an initial black attitude before each pixel demonstration, the former frame picture can not influence the display effect of back one frame picture, so the dynamic menu clear display.
[description of drawings]
Fig. 1 is the synoptic diagram of the initiative matrix liquid crystal display panel of prior art.
Fig. 2 is the scan electrode voltage V of display panels shown in Figure 1
gThe waveform synoptic diagram.
Fig. 3 is the signal electrode voltage V of display panels shown in Figure 1
dThe waveform synoptic diagram.
Fig. 4 is the pixel electrode voltage V of display panels shown in Figure 1
pThe waveform synoptic diagram.
Fig. 5 is the synoptic diagram of the initiative matrix liquid crystal display panel of driving method driving of the present invention.
Fig. 6 is the waveform voltage signal synoptic diagram of initiative matrix liquid crystal display panel scan electrode of the present invention.
Fig. 7 is the gray scale voltage waveform synoptic diagram of initiative matrix liquid crystal display panel signal electrode of the present invention.
Fig. 8 is the waveform voltage signal synoptic diagram of initiative matrix liquid crystal display panel pixel electrode of the present invention.
Fig. 9 is the light transmittance waveform synoptic diagram of initiative matrix liquid crystal display panel pixel of the present invention.
[embodiment]
Please refer to Fig. 5, it is the used initiative matrix liquid crystal display panel of driving method of the present invention, this initiative matrix liquid crystal display panel 200 comprises the capable scan electrode parallel to each other 201 of n, m row parallel to each other and with n line scanning electrode 201 vertically insulated crossing signal electrodes 202, this initiative matrix liquid crystal display panel 200 comprises that further a plurality of thin film transistor (TFT)s 204 drive pixel electrode 203 as on-off element.These a plurality of thin film transistor (TFT)s 204 are positioned at the intersection of scan electrode 201 and signal electrode 202, the grid 2040 of this thin film transistor (TFT) 204 is received scan electrode 201, the source electrode 2041 of this thin film transistor (TFT) 204 is connected to signal electrode 202, the drain electrode 2042 of this thin film transistor (TFT) 204 is connected to pixel electrode 203, each scan line comprises m pixel electrode 203, and this pixel electrode 203 forms an electric capacity 207 with public electrode 205.
Please also refer to Fig. 6, Fig. 7, Fig. 8 and Fig. 9, is the synoptic diagram of initiative matrix liquid crystal displaying panel driving method of the present invention.Fig. 6 is thin film transistor (TFT) 204 gate voltage signal oscillograms, and Fig. 7 is transistor 204 source voltage signal waveforms, and Fig. 8 is the pixel electrode voltage signal waveforms, and Fig. 9 is a pixel light penetrance oscillogram.
During the first frame picture, display time interval t
iIn, t
1Constantly, gate drive apparatus (figure does not show) provides scan voltage V
gThe grid 2040 of drive thin film transistors 204, thin film transistor (TFT) 204 is opened, and source electrode driving device (figure does not show) provides a gray scale voltage V simultaneously
sSource electrode 2041, drain electrode 2042 by thin film transistor (TFT) 204 are provided to pixel electrode 203, and pixel voltage is with gray scale voltage V
sBecome the voltage V of same amplitude
pt
2Constantly, at scanning voltage V
gUnder the control, this thin film transistor (TFT) 204 cuts out, pixel voltage V
pKept by electric capacity 207.Black plug period t
2In, t
1' constantly, this scanning voltage V
gGrid 2040 thin film transistor (TFT)s 204 of drive thin film transistors 204 are opened, source electrode driving device (figure does not show) provides the source electrode 2041 of a recovery voltage by thin film transistor (TFT) 204, drain electrode 2042 to be provided to pixel electrode 203 simultaneously, and pixel voltage is with this recovery voltage V
hBecome the recovery voltage V of same amplitude
h'.t
2' constantly, at scanning voltage V
gUnder the control, this thin film transistor (TFT) 204 cuts out, this recovery voltage V
h' being kept by electric capacity 207, pixel is being recovered electric V
h' driving under change specific initial black attitude into.
In like manner, the next frame picture shows the operation that repeats previous frame, and difference is: t
3Constantly, pixel voltage is with gray scale voltage V
sVariation become the voltage V of another amplitude
P2, t
3' constantly, this thin film transistor (TFT) 204 cuts out, pixel voltage V
P2Kept by electric capacity 207.
Please refer to Fig. 9, is pixel light penetrance oscillogram, as can be seen from the figure each frame pixel show before be an initial black attitude, the former frame picture can not influence the display effect of back one frame picture, so the present invention shows that the effect of dynamic menu is better.
By as can be known aforementioned, the invention relates to a kind of driving method of initiative matrix liquid crystal display panel, comprise the steps: at first each frame time (Frame) to be divided into display time interval t
iWith black plug period t
r, produce a gray scale voltage V then
s, its light amount of penetrating that makes a pixel is at display time interval t
iInterior integration is corresponding with view data, next at display time interval t
iProvide this gray scale voltage Vs pixel electrode 203, at last at this black plug period t to this display panels 200
rOne recovery voltage V is provided
hTo this pixel electrode 203, make this pixel at black plug period t
rIn get back to a specific initial black attitude.
Compared to prior art, the type of drive that the present invention adopts has redefined gray scale voltage V
s, black plug provides a recovery voltage V in the period
hMake the pixel of liquid crystal panel before the next frame time, get back to black scalariform attitude, each gray scale voltage V
sThe mesomorphic state of correspondence is black attitude when providing, thus each pixel show before be an initial black attitude, the former frame picture can not influence the display effect of back one frame picture, so the dynamic menu clear display.
The driving method of initiative matrix liquid crystal display panel of the present invention is not limited to above-mentioned embodiment, for example: this display time interval t in the initiative matrix liquid crystal displaying panel driving method of the present invention
iWith black plug period t
rRatio can equal 1, greater than 1 or less than 1, drive the gray scale voltage V of pixel
sCan be a kind of in 8 rank, 16 rank, 32 rank and 64 rank.
Claims (6)
1. the driving method of an initiative matrix liquid crystal display panel, this method signal of giving information makes a plurality of pixel display images that are connected with these a plurality of pixel electrodes to a plurality of pixel electrodes of a display panels, this method comprises the steps: at first each frame time to be divided into display time interval and black plug period, produce a gray scale voltage then, this voltage makes the integration of the light amount of penetrating in display time interval of a pixel corresponding with view data, next provides the pixel electrode of this gray scale voltage to this display panels at display time interval; Provide a recovery voltage to this pixel electrode in this black plug period at last, make this pixel get back to a specific initial black attitude in the period at black plug.
2. the driving method of initiative matrix liquid crystal display panel as claimed in claim 1 is characterized in that: wherein this display time interval and the ratio of this black plug period equal 1.
3. the driving method of initiative matrix liquid crystal display panel as claimed in claim 1 is characterized in that: this display time interval and the ratio of this black plug period are greater than 1.
4. the driving method of initiative matrix liquid crystal display panel as claimed in claim 1 is characterized in that: this display time interval and the ratio of this black plug period are less than 1.
5. the driving method of initiative matrix liquid crystal display panel as claimed in claim 1 is characterized in that: this frame time is 16.7ms.
6. the driving method of initiative matrix liquid crystal display panel as claimed in claim 1 is characterized in that: this gray scale voltage can be a kind of in 8 rank, 16 rank, 32 rank and 64 rank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410091827 CN1797527A (en) | 2004-12-24 | 2004-12-24 | Method for driving LCD faceplate in active matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410091827 CN1797527A (en) | 2004-12-24 | 2004-12-24 | Method for driving LCD faceplate in active matrix |
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| Publication Number | Publication Date |
|---|---|
| CN1797527A true CN1797527A (en) | 2006-07-05 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410091827 Pending CN1797527A (en) | 2004-12-24 | 2004-12-24 | Method for driving LCD faceplate in active matrix |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261813B (en) * | 2007-03-06 | 2010-05-26 | 明基电通股份有限公司 | A method for improving LCD display with black insertion technology |
| CN101846850A (en) * | 2009-05-09 | 2010-09-29 | 苏州纳科显示技术有限公司 | Structure of light emitting device array and drive method for display light source |
| CN101777297B (en) * | 2009-01-09 | 2012-05-30 | 联咏科技股份有限公司 | Display system, source electrode drive device and picture black frame insertion method |
| CN102637403A (en) * | 2011-02-09 | 2012-08-15 | 精工爱普生株式会社 | Electrooptic device, method for controlling electrooptic device, and electronic apparatus |
| CN102024403B (en) * | 2009-09-16 | 2013-01-16 | 群康科技(深圳)有限公司 | Method for relieving image smearing and image track phenomena and related displayer |
| CN102110403B (en) * | 2009-12-23 | 2013-04-17 | 群康科技(深圳)有限公司 | Method for improving motion blur phenomenon of display and related display |
| WO2018126836A1 (en) * | 2017-01-06 | 2018-07-12 | 京东方科技集团股份有限公司 | Method for driving display panel, and driving device |
| CN109166545A (en) * | 2018-09-27 | 2019-01-08 | 京东方科技集团股份有限公司 | AR/VR shows driving method, driving device and the display equipment of equipment |
| CN109946880A (en) * | 2019-04-09 | 2019-06-28 | 深圳康佳电子科技有限公司 | A kind of Mini-LED backlight liquid crystal mould group, display methods and TV |
-
2004
- 2004-12-24 CN CN 200410091827 patent/CN1797527A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261813B (en) * | 2007-03-06 | 2010-05-26 | 明基电通股份有限公司 | A method for improving LCD display with black insertion technology |
| CN101777297B (en) * | 2009-01-09 | 2012-05-30 | 联咏科技股份有限公司 | Display system, source electrode drive device and picture black frame insertion method |
| CN101846850A (en) * | 2009-05-09 | 2010-09-29 | 苏州纳科显示技术有限公司 | Structure of light emitting device array and drive method for display light source |
| CN101846850B (en) * | 2009-05-09 | 2014-08-06 | 苏州纳科显示技术有限公司 | Structure of light emitting device array and drive method for display light source |
| CN102024403B (en) * | 2009-09-16 | 2013-01-16 | 群康科技(深圳)有限公司 | Method for relieving image smearing and image track phenomena and related displayer |
| CN102110403B (en) * | 2009-12-23 | 2013-04-17 | 群康科技(深圳)有限公司 | Method for improving motion blur phenomenon of display and related display |
| CN102637403A (en) * | 2011-02-09 | 2012-08-15 | 精工爱普生株式会社 | Electrooptic device, method for controlling electrooptic device, and electronic apparatus |
| WO2018126836A1 (en) * | 2017-01-06 | 2018-07-12 | 京东方科技集团股份有限公司 | Method for driving display panel, and driving device |
| US11302271B2 (en) | 2017-01-06 | 2022-04-12 | Boe Technology Group Co., Ltd. | Method for driving display panel, driving device |
| CN109166545A (en) * | 2018-09-27 | 2019-01-08 | 京东方科技集团股份有限公司 | AR/VR shows driving method, driving device and the display equipment of equipment |
| US11132844B2 (en) | 2018-09-27 | 2021-09-28 | Beijing Boe Optoelectronics Technology Co., Ltd. | Driving method and driving apparatus for AR/VR display device, and display device |
| CN109946880A (en) * | 2019-04-09 | 2019-06-28 | 深圳康佳电子科技有限公司 | A kind of Mini-LED backlight liquid crystal mould group, display methods and TV |
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