CN101320177B - Liquid crystal display panel and its black picture insertion method - Google Patents
Liquid crystal display panel and its black picture insertion method Download PDFInfo
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- CN101320177B CN101320177B CN 200710110305 CN200710110305A CN101320177B CN 101320177 B CN101320177 B CN 101320177B CN 200710110305 CN200710110305 CN 200710110305 CN 200710110305 A CN200710110305 A CN 200710110305A CN 101320177 B CN101320177 B CN 101320177B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 31
- 238000012966 insertion method Methods 0.000 title claims description 13
- 230000008878 coupling Effects 0.000 claims abstract description 76
- 238000010168 coupling process Methods 0.000 claims abstract description 76
- 238000005859 coupling reaction Methods 0.000 claims abstract description 76
- 239000003990 capacitor Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000004913 activation Effects 0.000 claims description 27
- 206010011968 Decreased immune responsiveness Diseases 0.000 claims description 11
- 230000009467 reduction Effects 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 7
- 230000005669 field effect Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000013461 design Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000007667 floating Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
The present invention discloses a liquid crystal display panel and a black picture inserting method thereof. A plurality of coupling scanning beams are added to a plurality of scanning beams which are originally vertical to each other. The coupling scanning beams are connected with the stored capacitor of each pixel. The switch of each pixel is controlled by the scanning beams, so a data signal is selectively conveyed from a data wire to a liquid crystal capacitor and the stored capacitor. The coupling scanning beams can couple the stored capacitor and a pixel electrode by using voltage difference to reach a black picture inserting effect. In this way, a black inserting effect can be reached without increasing a time pulse frequency and without changing a black lighting module design. Then, the dynamic quality of a display picture is enhanced.
Description
Invention field
The present invention relates to a kind of display panel and driving method, and be particularly related to a kind of display panels and black picture insertion method thereof that reduces dynamic fuzzy (motion blur).
Technical background
In known active matrix film transistor type display panels, see also Fig. 1, each pixel 10 has a thin film transistor (TFT) (TFT) 12 as gauge tap, its grid be connected to level to sweep trace 14, drain electrode be connected to vertically to data line 16, and source electrode is connected to liquid crystal electrode.
As shown in the figure, sweep trace 14 of display panel one-shot so that all thin film transistor (TFT)s 12 on this line are opened, and is sent into data-signal to corresponding pixel 10 via data line 16.Then close thin film transistor (TFT) 12, until next time write signal again again, therebetween so that electric charge be kept on pixel capacitance 18 and the storage capacitors 20 in parallel thereof, to keep voltage; This moment restart next bar sweep trace 14, via data line 16 input data signals to respective pixel 10; So sequentially the data-signal with whole picture writes, and so can control each pixel 10 in the active matrix display panel can be according to the data-signal start of input and with image display on display panel.
Yet, because the film transistor type liquid crystal display is a kind of current potential maintenance display (Holding type display), pulsed display compared to CRT, have the slower reaction time (response time) at the display panel picture quality, cause having on the picture phenomenon of smear, also can be referred to as dynamic fuzzy (motion blur).Prior art is in order to reduce dynamic fuzzy, improve the display quality of liquid crystal display, adopting fast LC and the excessive technology such as (over-drive) that drives except meeting accelerated the reaction time, another kind of effectively mode namely is to adopt black picture to insert (Black image insertion) technology, make the visual effect of liquid crystal display better, black picture inserts technology and insert a black picture between adjacent picture frame (frame) and picture frame, reach pulsed and show (impulse type display), and then improve the picture dynamic quality.
At present the mode of inserting black picture is not to take in good time backlight module (Blacklight) to be turned off to manifest black picture usually, adopts exactly to adjust aspect and come inserting black picture; The former utilizes the mode of adjusting backlight module to need extra control circuit; And at present to adjust aspect as main shaft, it doubles frequency, for example is increased to 120Hz by 60Hz originally, the time feeding pixel data signal originally of half, second half time chien shih pixel blackening.Yet; to between adjacent picture frame and picture frame, insert a black picture; therefore the clock pulse frequency of being responsible for the data driver of data writing signal then must double; the operating frequency of high frequency can lower the duration of charging of normal pictures; problem to liquid crystal pixel write time deficiency can easily occur, and operating frequency accelerates also can cause the problem of electromagnetic interference (EMI).
In view of this, the present invention proposes a kind of display panels and black picture insertion method thereof not changing the backlight module circuit framework and not sacrificing under the prerequisite in duration of charging, to change these disappearances that are present in the prior art.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of display panels and black picture insertion method thereof, it utilizes newly-increased sweep trace to change the voltage of pixel electrode in coupling (coupling) mode, make it present black picture, in order to do not increasing the clock pulse frequency and need not change under the prerequisite of backlight module design, can reach black picture and insert effect, improve the dynamic quality of display frame.
Another object of the present invention is to provide a kind of display panels and black picture insertion method thereof, it can control by the time span of two sweep traces between opening time point of controlling a pixel ratio of inserting black picture.
The present invention proposes a kind of LCD type structure, it has additional a plurality of coupling sweep traces in mutually perpendicular a plurality of sweep traces and data line, and plural pixel arranged, and each pixel comprises a switch, a liquid crystal capacitance and storage capacitors, switch can be subjected to the control of sweep trace, optionally to transmit a data-signal to liquid crystal capacitance and storage capacitors from data line, and storage capacitors is connected to the coupling sweep trace, makes this storage capacitors be coupled to pixel electrode and presents the effect that black picture inserts.
According to an aspect of the present invention, provide a kind of display panels, comprising:
A plurality of sweep traces comprise one first sweep trace and one second sweep trace;
A plurality of sweep traces that are coupled comprise one first coupling sweep trace and one second coupling sweep trace;
A plurality of data lines, orthogonal with the coupling sweep trace with described sweep trace, and described data line comprises one first data line and one second data line; And
A plurality of pixels, each described pixel comprises a switch, a liquid crystal capacitance and a storage capacitors, described switch is subjected to the control of described the first sweep trace or the second sweep trace, optionally to transmit a data-signal to described liquid crystal capacitance and described storage capacitors from described the first data line or the second data line; And
Described a plurality of pixel comprises that at least polarity just is respectively and negative one first pixel and one second pixel, the grid of the switch of described the first pixel connects described the first sweep trace, and the storage capacitors of described the first pixel is connected to described the second coupling sweep trace with the darkly picture of pixel electrode that is coupled, the grid of the switch of described the second pixel connects described the first sweep trace, and the storage capacitors of described the second pixel is connected to described the first coupling sweep trace with the darkly picture of pixel electrode that is coupled.
According to a further aspect in the invention, a kind of black picture insertion method of display panels is provided, described display panels comprises a plurality of pixels, each described pixel comprises a switch, a liquid crystal capacitance and storage capacitors, described switch is subjected to the control of one first sweep trace or the second sweep trace, optionally to transmit a data-signal to described liquid crystal capacitance and described storage capacitors from one first data line or one second data line; And described a plurality of pixel comprises that at least polarity is respectively one first pixel and one second pixel of positive and negative, the switch of described the first pixel and the second pixel is connected to the first sweep trace, and the storage capacitors of described the first pixel and the second pixel is connected to respectively the second coupling sweep trace and the first coupling sweep trace; The black picture insertion method Bao of described display panels draws together Xia row Bu Zhou ︰
Described the first sweep trace of activation, input data signal to the first data line makes the magnitude of voltage on the first data line be write the first pixel, and input data signal to the second data line makes the magnitude of voltage on the second data line be write the second pixel;
Described the first sweep trace of anergy; And
After a schedule time, activation the second coupling sweep trace makes the voltage signal of the second coupling sweep trace be transferred to high levle and be made the first pixel present black picture by low level, and activation the first coupling sweep trace makes the voltage signal of the first coupling sweep trace be transferred to low level and be made the second pixel present black picture by high levle.
Cooperate above-mentioned LCD type structure, the present invention also proposes a kind of black picture insertion method, and its first activation first sweep trace is inputted data-signal to the first data line, data-signal is inputed in the pixel, anergy the first sweep trace; After through a schedule time, activation the first coupling sweep trace, the voltage signal of pixel is pulled to the second level by the first level, for example pixel electrode is for negative, be pulled down to the low-voltage level by the high voltage level, pixel electrode is for just, and the low-voltage level is pulled to the high voltage level, the voltage official post storage capacitors of this two level can be coupled to pixel electrode, and then makes this pixel present black picture.
Beneath by the appended graphic in detail explanation of specific embodiment cooperation, when the effect that is easier to understand purpose of the present invention, technology contents, characteristics and reaches.
Description of drawings
Fig. 1 is the schematic diagram of known film transistor type display panels;
Fig. 2 is the circuit diagram of display panel of the present invention;
Fig. 3 is that one embodiment of the invention are at the sequential chart that drives the pixel start on the display panels;
Fig. 4 is that another embodiment of the present invention is at the sequential chart that drives the pixel start on the display panels;
Fig. 5 is the voltage schematic diagram before and after the positive and negative polarity coupling of the present invention.
[main element symbol description]
10 pixels, 12 thin film transistor (TFT)s (TFT)
14 sweep traces, 16 data lines
18 pixel capacitances, 20 storage capacitors
30 first pixels, 301 switches
302 liquid crystal capacitances, 303 storage capacitors
32 second pixels, 321 switches
322 liquid crystal capacitances, 323 storage capacitors
34 the 3rd pixels, 341 switches
342 liquid crystal capacitances, 343 storage capacitors
36 the 4th pixels, 361 switches
362 liquid crystal capacitances, 363 storage capacitors
Embodiment
The present invention utilizes newly-increased coupling sweep trace (coupling scan line) to cooperate signal scanning line originally to change the voltage of pixel electrode, and utilize coupled voltages to make the pixel in the display panels present black picture, in order to do not increasing the clock pulse frequency and do not changing under the prerequisite of backlight module design, reach black picture and insert effect, to improve the dynamic quality of display frame.
See also Fig. 2, the driving circuit part schematic diagram that shows display panels of the present invention among the figure, be provided with a plurality of signal scanning line S1～Sm and a plurality of coupling sweep traces C0～Cm at this display panels, and a plurality of data lines D1～Dm, and data line D1～Dm and these sweep traces S1～Sm and coupling sweep trace C0～Cm are orthogonal.Beneath with the first data line D1 and the second data line D2, the first sweep trace S1 and the second sweep trace S2, the first coupling sweep trace C0, the second coupling sweep trace C1 and the 3rd sweep trace C2 that is coupled, and pixel wherein 30,32,34,36 describes spirit of the present invention in detail for example.
As shown in Figure 2, in this display panels, as an example of the reversal of poles type of drive of a counter-rotating example feature of the present invention is described in detail, one first pixel 30 is positive polarity, be connected to the first sweep trace S1, the first data line D1 and the second coupling sweep trace C1, and the first pixel 30 comprises a switch 301, one liquid crystal capacitance 302 and storage capacitors 303, the grid of this switch 301 connects the first sweep trace S1, first source/drain electrode and second source/drain electrode then are connected to respectively the first data line D1 and liquid crystal capacitance 302 and storage capacitors 303, to be subjected to the control of the first sweep trace S1, optionally transmit a data-signal to liquid crystal capacitance 302 and storage capacitors 303 from the first data line D1, and storage capacitors 303 is connected to the second coupling sweep trace C1, makes storage capacitors 303 be coupled to pixel electrode and presents black picture.One second pixel 32 adjacent with the first pixel 30 is negative polarity, be connected to the first sweep trace S1, the second data line D2 and the first coupling sweep trace C0, and the second pixel 32 comprises a switch 321, one liquid crystal capacitance 322 and storage capacitors 323, the grid of this switch 321 also is connected to the first sweep trace S1, first source/drain electrode and second source/drain electrode then are connected to respectively the second data line D2 and liquid crystal capacitance 322 and storage capacitors 323, to be subjected to the control of the first sweep trace S1, optionally transmit a data-signal to liquid crystal capacitance 322 and storage capacitors 323 from the first data line D2, and 323 of storage capacitors are connected to the first coupling sweep trace C0, make storage capacitors 323 be coupled to pixel electrode and present black picture.Similarly, the 3rd pixel 34 of a negative polarity is connected to the second sweep trace S2, the first data line D1 and the 3rd coupling sweep trace C2, and comprises a switch 341, a liquid crystal capacitance 342 and storage capacitors 343; And the 4th pixel 36 of a positive polarity is connected to the second sweep trace S2, the second data line D2 and the second coupling sweep trace C1, and comprises a switch 361, a liquid crystal capacitance 362 and storage capacitors 363; All the other structures are then identical with the second pixel 32 with the first pixel 30 respectively, repeat no more in this.
Wherein, above-mentioned switch 301,321,341,361 etc. adopts thin film transistor (TFT), is generally P type field-effect transistor or N-type field-effect transistor.
After the circuit structure of Fig. 2 has been described, the following describes its start sequential chart, please consult simultaneously shown in Figure 3, t shown in the figure represents the time of a sweep trace, schedule time T can be random time length, and for example time of half frame, and this schedule time, T satisfied equation: the t of 2t＜=T＜=(Y-2), wherein Y is Vtotal (active+blanking), controls the inserting black picture ratio with the length of utilizing this schedule time of control.
As shown in Figures 2 and 3, because the polarity of voltage of the first pixel 30 is positive polarity, at this moment, and first activation the first sweep trace S1, input data signal to the first data line D1 makes the voltage signal on the first data line D1 can write the first pixel 30; When writing when finishing, anergy the first sweep trace S1, all pixels that then link on this first sweep trace S1 are until before the first sweep trace activation of next frame (frame), all be in (floating) state of floating.Again through behind the schedule time T, activation the second coupling sweep trace C1, make the voltage signal of the second coupling sweep trace C1 transfer high levle to by low level, the voltage signal of the first pixel 30 is pulled to high levle by low level, its pressure reduction (Δ V) makes storage capacitors 303 be coupled to this pixel electrode, and then makes this first pixel 30 present black picture; By that analogy, present after the black picture because of the effect of coupling sweep trace when all pixels, will continue to keep black picture until the first sweep trace S1 activation of next frame and data writing again.When the second sweep trace S2 activation, the voltage signal on the first data line D1 can write in the 3rd pixel 34; When writing when finishing, anergy the second sweep trace S2, all pixels 34 that then link on this second sweep trace S2 are until before the second sweep trace activation of next frame (frame), all be in floating state.Again through behind the schedule time T, activation the 3rd coupling sweep trace C2, because the polarity of voltage of the 3rd pixel 34 is negative polarity, make the voltage signal of the 3rd coupling sweep trace C2 transfer low level to by high levle, the voltage signal of the 3rd pixel 34 is pulled down to low level by high levle, its pressure reduction (Δ V) makes storage capacitors 343 be coupled to pixel electrode, and then makes the 3rd pixel 34 present black picture; By that analogy, present after the black picture because of the effect of coupling sweep trace when all pixels, will continue to keep black picture until the second sweep trace S2 activation of next frame and data writing again.Sequentially repeat above-mentioned flow process, can finish the start of all pixels in the whole display panels.
Circuit structure shown in Figure 2 also can cooperate the start sequential chart of Fig. 4 to drive pixel except can cooperating start sequential chart shown in Figure 3.Please consult simultaneously Fig. 2 and shown in Figure 4, t shown in the figure represents the time of a sweep trace, schedule time T can be random time length, time of half frame for example, and this schedule time, T satisfied equation: the t of 2t＜=T＜=(Y-2), wherein Y is Vtotal (active+blanking), controls the inserting black picture ratio with the length of utilizing control this schedule time T.
At first, activation the first sweep trace S1, input the first data-signal to the first data line D1, magnitude of voltage on the first data line D1 can be write in the first pixel 30, when writing when finishing, anergy the first sweep trace S1, all pixels that then link on this first sweep trace S1 are until before the first sweep trace activation of next frame, all be in floating state.Then, activation the second sweep trace S2, input the second data-signal to the first data line D1, magnitude of voltage on the first data line D1 can be write in the 3rd pixel 34, when writing when finishing, anergy the second sweep trace S2, all pixels that then link on this second sweep trace S2 are until before the second sweep trace activation of next frame, all be in floating state.Behind anergy the first sweep trace S1 through a schedule time T after, activation the second coupling sweep trace C1, the voltage signal of the first pixel 30 is pulled to high levle by low level, its pressure reduction makes storage capacitors 303 be coupled to pixel electrode, then will be uprised by the pixel voltage value of the second coupling line C1 coupling this moment, can control this coupling amount and make this pixel (the first pixel 30) all present black picture; In the same time, the 3rd coupling line C2 is pulled down to low level with the voltage signal of the 3rd pixel 34 by high levle, its pressure reduction makes storage capacitors 343 be coupled to pixel electrode, and then this moment will step-down by the pixel voltage value of the 3rd coupling line C2 coupling and make this pixel (the 3rd pixel 34) present black picture.Wherein, the second coupling sweep trace C1 and the 3rd coupling sweep trace C2 at one time transition, it is coupled and differs between the sweep trace C4 time of two sweep traces with new the 4th sweep trace C3 and the 5th that is coupled of next group.By that analogy, present after the black picture because of the coupling of the second and the 3rd coupling sweep trace C1, C2 when all pixels, deceive picture with continuing to keep until first and second sweep trace S1 of next frame, S2 activation and data writing again.
Wherein, the mode that the present invention presents pixel and deceives picture can be with reference to figure 5 its voltage schematic diagram for positive and negative polarity coupling of the present invention front and back, as shown in the figure, after the coupling, the positive polarity voltage value strengthens and is enough large with the pressure reduction of Vcom, present black Hua Mian ﹔ reverse voltage value and then descend manyly, and strengthen with Vcom pressure reduction and present black picture, therefore can measure to make all pixels to present the effect of black picture by controlling this coupling.Certainly, the present invention on the display panels that can be applicable to drive with the reversal of poles of a counter-rotating, for other reversal of poles mode, all applicable such as picture frame counter-rotating, two wires counter-rotating, the counter-rotating of four lines, row counter-rotating or row counter-rotating etc., its start principle is identical with aforementioned content.
In sum, cooperate its driving method by circuit structure design of the present invention, to utilize newly-increased sweep trace to change the magnitude of voltage of pixel electrode with coupling scheme, make pixel present black picture, in order to do not increasing the clock pulse frequency and need not to change under the prerequisite of backlight module design, can reach black picture and insert effect, improve the dynamic quality of display frame.
Above-described embodiment only is explanation technological thought of the present invention and characteristics, its purpose makes those skilled in the art can understand content of the present invention and is implementing according to this, but it does not limit patent claim of the present invention, the equalization that namely disclosed spirit is done according to the present invention changes or modifies, and must be encompassed in the patent claim of the present invention.
Claims (13)
1. display panels comprises:
A plurality of sweep traces comprise one first sweep trace and one second sweep trace;
A plurality of sweep traces that are coupled comprise one first coupling sweep trace and one second coupling sweep trace;
A plurality of data lines, orthogonal with the coupling sweep trace with described sweep trace, and described data line comprises one first data line and one second data line; And
A plurality of pixels, each described pixel comprises a switch, a liquid crystal capacitance and a storage capacitors, described switch is subjected to the control of described the first sweep trace or the second sweep trace, optionally to transmit a data-signal to described liquid crystal capacitance and described storage capacitors from described the first data line or the second data line; And
Described a plurality of pixel comprises that at least polarity just is respectively and negative one first pixel and one second pixel, the grid of the switch of described the first pixel connects described the first sweep trace, and the storage capacitors of described the first pixel is connected to described the second coupling sweep trace with the darkly picture of pixel electrode that is coupled, the grid of the switch of described the second pixel connects described the first sweep trace, and the storage capacitors of described the second pixel is connected to described the first coupling sweep trace with the darkly picture of pixel electrode that is coupled.
2. display panels as claimed in claim 1, wherein said the first coupling sweep trace is pulled down to low level with signal by high levle, and described the second coupling sweep trace is pulled to high levle with signal by low level.
3. display panels as claimed in claim 1, wherein said switch also comprises a grid, one source pole and a drain electrode, described grid connects described the first sweep trace, and described source electrode and drain electrode then connect respectively the described first or second data line and described liquid crystal capacitance and described storage capacitors.
4. display panels as claimed in claim 1, wherein said switch is thin film transistor (TFT).
5. display panels as claimed in claim 4, wherein said thin film transistor (TFT) is P type field-effect transistor or N-type field-effect transistor.
6. display panels as claimed in claim 1 is described first pixel of positive polarity about polarity of voltage wherein, and the inserting black picture method of described display panel comprises:
Described the first sweep trace of activation is inputted described data-signal to described the first data line, makes described data-signal input to described the first pixel;
Described the first sweep trace of anergy; And
After a schedule time, described the second coupling sweep trace of activation is pulled to high levle with the voltage signal of described the first pixel by low level, and its pressure reduction makes described storage capacitors be coupled to described pixel electrode, and then makes described the first pixel present black picture.
7. display panels as claimed in claim 1 is described second pixel of negative polarity about polarity of voltage wherein, and the inserting black picture method of described display panel comprises:
Described the first sweep trace of activation is inputted described data-signal to described the second data line, makes described data-signal input to described the second pixel;
Described the first sweep trace of anergy; And
After a schedule time, described the first coupling sweep trace of activation is pulled down to low level with the voltage signal of described the second pixel by high levle, and its pressure reduction makes described storage capacitors be coupled to described pixel electrode, and then makes described the second pixel present black picture.
8. display panels as claimed in claim 1, wherein said the first coupling sweep trace and described second be coupled sweep trace single spin-echo and differ from time of a sweep trace.
9. display panels as claimed in claim 6, wherein said schedule time T satisfies equation: the t of 2t＜=T＜=(Y-2), wherein said t is the time of a sweep trace, and described Y is Vtotal, controls the inserting black picture ratio with the length of utilizing the described schedule time of control.
10. display panels as claimed in claim 1, wherein:
Described a plurality of coupling sweep traces also comprise one the 3rd coupling sweep trace;
Described a plurality of pixel comprises that also polarity is one the 3rd pixel of bearing, and the grid of the switch of described the 3rd pixel connects described the second sweep trace, and the storage capacitors of described the 3rd pixel is connected to described the 3rd coupling sweep trace with the darkly picture of pixel electrode that is coupled;
Described the second coupling sweep trace and described the 3rd coupling sweep trace at one time transition, it is coupled and differs between the sweep trace time of two sweep traces with new the 4th sweep trace and the 5th that is coupled of next group.
11. the black picture insertion method of a display panels, described display panels comprises a plurality of pixels, each described pixel comprises a switch, a liquid crystal capacitance and storage capacitors, described switch is subjected to the control of one first sweep trace or the second sweep trace, optionally to transmit a data-signal to described liquid crystal capacitance and described storage capacitors from one first data line or one second data line; And described a plurality of pixel comprises that at least polarity is respectively one first pixel and one second pixel of positive and negative, the switch of described the first pixel and the second pixel is connected to the first sweep trace, and the storage capacitors of described the first pixel and the second pixel is connected to respectively the second coupling sweep trace and the first coupling sweep trace; The black picture insertion method Bao of described display panels draws together Xia row Bu Zhou ︰
Described the first sweep trace of activation, input data signal to the first data line makes the magnitude of voltage on the first data line be write the first pixel, and input data signal to the second data line makes the magnitude of voltage on the second data line be write the second pixel;
Described the first sweep trace of anergy; And
After a schedule time, activation the second coupling sweep trace makes the voltage signal of the second coupling sweep trace be transferred to high levle and be made the first pixel present black picture by low level, and activation the first coupling sweep trace makes the voltage signal of the first coupling sweep trace be transferred to low level and be made the second pixel present black picture by high levle.
The single spin-echo of sweep trace and differ from time of a sweep trace 12. the black picture insertion method of display panels as claimed in claim 11, wherein said the first coupling sweep trace and described second are coupled.
13. the black picture insertion method of display panels as claimed in claim 11, wherein the activation of the second coupling sweep trace occurs in this first sweep trace anergy one time T, time T satisfies equation: the t of 2t＜=T＜=(Y-2), wherein said t is the time of a sweep trace, described Y is Vtotal, controls the inserting black picture ratio with the length of utilizing the described schedule time of control.
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| US9105240B2 (en) * | 2009-05-09 | 2015-08-11 | Chen-Jean Chou | Structure of light emitting device array and drive method for display light source |
| CN102568400A (en) * | 2010-12-15 | 2012-07-11 | 瀚宇彩晶股份有限公司 | Driving method of liquid crystal display |
| CN107515499B (en) * | 2017-09-20 | 2021-01-12 | Tcl华星光电技术有限公司 | Liquid crystal display panel |
| CN110969999B (en) * | 2019-11-25 | 2021-09-07 | 厦门天马微电子有限公司 | Electromagnetic interference weakening circuit, display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1567418A (en) * | 2003-06-11 | 2005-01-19 | 瀚宇彩晶股份有限公司 | Display mode with black picture inserted and apparatus thereof |
| CN1952742A (en) * | 2006-11-10 | 2007-04-25 | 友达光电股份有限公司 | Liquid crystal display device and driving method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1567418A (en) * | 2003-06-11 | 2005-01-19 | 瀚宇彩晶股份有限公司 | Display mode with black picture inserted and apparatus thereof |
| CN1952742A (en) * | 2006-11-10 | 2007-04-25 | 友达光电股份有限公司 | Liquid crystal display device and driving method thereof |
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| JP特开2005-292793A 2005.10.20 |
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