CN101887694A - Electrophoretic display and driving method thereof - Google Patents
Electrophoretic display and driving method thereof Download PDFInfo
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- CN101887694A CN101887694A CN 201010229598 CN201010229598A CN101887694A CN 101887694 A CN101887694 A CN 101887694A CN 201010229598 CN201010229598 CN 201010229598 CN 201010229598 A CN201010229598 A CN 201010229598A CN 101887694 A CN101887694 A CN 101887694A
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Abstract
The invention discloses a driving method for driving an electrophoretic display. The electrophoretic display is provided with a plurality of scanning lines, when scanning an image in a first group of images, the electrophoretic display sequentially enables the plurality of scanning lines according to a sequence top to bottom; and when scanning an image in a second group of images, the electrophoretic display sequentially enables the plurality of scanning lines according to the sequence from top to bottom.
Description
Technical field
The invention relates to a kind of electrophoretic display device (EPD) and driving method thereof.
Background technology
Please refer to Fig. 1, Fig. 1 is the synoptic diagram of the electrophoretic display device (EPD) 100 of prior art.Electrophoretic display device (EPD) 100 comprises a plurality of pixel cells 102, multi-strip scanning line 104 and many public electrode wires 106 and a gate drivers 108.Gate drivers 108 connects a plurality of pixel cells 102 by multi-strip scanning line 104, and pixel cell 102 also receives public voltage signal Vcom by public electrode wire 106.During picture shows, gate drivers 108 will provide sweep signal to sweep trace 104 in regular turn, to drive the multiple row pixel cell 102 of corresponding sweep trace 104 in regular turn, simultaneously, also need look design requirement and will change the level of public voltage signal.
Please refer to Fig. 2, Fig. 2 is the sequential chart of driving method of the electrophoretic display device (EPD) 100 of prior art.This driving method is to drive all sweep traces according to driving order.In this driving method, driving in proper order can be according to the sweep trace G1 of first picture 202 extremely ... the order of Gm and finish the driving operation of sweep trace, and before the driving operation of next picture began, the level of public voltage signal was converted to low level by high level.Then, finish the driving operation of sweep trace again according to the order of the sweep trace G1 to Gm of second picture 204, and before the driving operation of next group sweep trace began, the level of public voltage signal was a high level by low transition.
Please refer to Fig. 3, Fig. 3 is the synoptic diagram of little cup (Microcup) structure 300 in the electrophoretic display device (EPD) 100 of prior art.Little cup structure 300 has a plurality of little glass of 304a, 304b, 304c with array format, fills charged particle 302 and drop 308 among little glass of 304a, 304b, the 304c, and does encapsulation with sealant (Sealing layer) 306.Control the charged particle of different electric charges by extra electric field and do lifting moving control, to present different GTG effects.In little glass of 304a, extra electric field is with low voltage drive, so charged particle 302 can move down, and this moment, corresponding pixel can show the image of black; Otherwise in little glass of 304b, extra electric field is with high voltage drive, so charged particle 302 can up move the image of corresponding pixel meeting this moment display white.And in little glass of 304c, the extra electric field desire drives charged particle 302 makes corresponding pixel show the image of GTG 10, yet after electrophoretic display device (EPD) 100 is showing a period of time, charged particle 302 in little cup 304 is because residual voltage acts on for a long time, cause the GTG position of the charged particle 302 of script data voltage correspondence to be made a mistake, make it show GTG 11, but not show GTG 10.Therefore, the industry utmost point needs a kind of driving method to solve the shortcoming of above-mentioned prior art.
Summary of the invention
The invention provides a kind of driving method, in order to drive an electrophoretic display device (EPD), this electrophoretic display device (EPD) comprises the multi-strip scanning line, and this driving method comprises the following steps: when the picture in the scanning one k group of pictures, according to this multi-strip scanning line of order activation in regular turn from top to bottom; And when the picture in scanning one (k+1) group of pictures, according to this multi-strip scanning line of order activation in regular turn from the bottom to top; Wherein each group of pictures has at least one picture, and k is the positive integer more than or equal to 1.
The present invention also provides a kind of driving method, in order to drive an electrophoretic display device (EPD), this driving method comprises the following steps: to provide an electrophoretic display device (EPD) to comprise many group sweep traces, and every group of sweep trace comprises the multi-strip scanning line, and the multi-strip scanning line of these many group sweep traces is to intermesh; And when the picture in the scanning one k group of pictures, foundation one order from top to bottom is the multi-strip scanning line of each sweep trace of activation in regular turn; And when the picture in scanning one (k+1) group of pictures, the multi-strip scanning line of this each group sweep trace of foundation one order activation in regular turn from the bottom to top; Wherein each group of pictures has at least one picture, and k is the positive integer more than or equal to 1.
The present invention also provides a kind of electrophoretic display device (EPD), comprising: the multi-strip scanning line; And a gate drivers, be electrically connected on this multi-strip scanning line, in order to drive this multi-strip scanning line; Wherein, when the picture in the scanning one k group of pictures, foundation one this multi-strip scanning line of order activation in regular turn from top to bottom, and when the picture in scanning one (k+1) group of pictures, foundation one this multi-strip scanning line of order activation in regular turn from the bottom to top, wherein each group of pictures has at least one picture, and k is the positive integer more than or equal to 1.
The present invention also provides a kind of electrophoretic display device (EPD), comprising: n organizes sweep trace, and every group of sweep trace comprises m bar sweep trace, and wherein the sweep trace of this n group sweep trace is to intermesh; And a gate drivers, be electrically connected on this (m*n) bar sweep trace, should (m*n) bar sweep trace in order to drive; Wherein, when the picture in the scanning one k group of pictures, the m bar sweep trace of this each group sweep trace of foundation one order activation in regular turn from top to bottom, and when the picture in scanning one (k+1) group of pictures, according to from the bottom to top the m bar sweep trace of order activation in regular turn this each group sweep trace, n wherein, m is the positive integer greater than 1, each group of pictures has at least one picture, and k is the positive integer more than or equal to 1.
Description of drawings
Fig. 1 is the synoptic diagram of the electrophoretic display device (EPD) of prior art.
Fig. 2 is the sequential chart of the previous driving method of Fig. 1 electrophoretic display device (EPD).
Fig. 3 is the synoptic diagram of little cup structure of Fig. 1 electrophoretic display device (EPD).
Fig. 4 is the sequential chart according to the P-SCAN driving method of one embodiment of the invention.
Fig. 5 is the sequential chart according to the interlacing driving method of one embodiment of the invention.
Fig. 6 is the sequential chart according to another interlacing driving method of one embodiment of the invention.
[main element label declaration]
100: electrophoretic display device (EPD) 102: pixel cell
104: sweep trace 106: public electrode wire
108: 202: the first pictures of gate drivers
302: charged particle 304a, 304b, 304c: little cup
306: sealant 308: drop
402,502, driving in 602: the first order
404,504, driving in 604: the second order
406,506,606: the first group of pictures
408,508,608: the second group of pictures
G1-Gm, G1-G9: sweep trace
Vsync: vertical synchronizing signal
Vcom: public voltage signal
Embodiment
Fig. 4 illustrates the part sequential chart according to the driving method of a kind of electrophoretic display device (EPD) of one embodiment of the invention.In this embodiment, electrophoretic display device (EPD) has the multi-strip scanning line, G1 for example, G2, ... G8, when vertical synchronizing signal Vsync drives first group of pictures 406, use first driving order 402, finish the driving operation of sweep trace G1-G8 according to the order of the first sweep trace G1, the second sweep trace G2 to the, eight sweep trace G8.When vertical synchronizing signal Vsync drives second group of pictures 408, use the second driving order 404 reverse, finish the driving operation of sweep trace G1-G8 according to the order of the 8th sweep trace G8, the 7th sweep trace G7 to the first sweep trace G1 with first driving order 402.Arbitrarily the two adjacent groups picture can be respectively according to from top to bottom order 402 and the 404 driven sweep line G1-G8 of order from the bottom to top, and every group of pictures is made up of a picture at least, is example with Fig. 4, every group of pictures has two pictures.In addition, public voltage signal Vcom in office two adjacent pictures are with switching levels.In addition, present embodiment is to be example with eight sweep traces, yet the present invention is not limited to eight sweep traces, and the actual number of sweep trace can be adjusted according to indivedual situations.
This kind have the public voltage signal of level reverse speed characterisstic and up and down the reverse scan mode can eliminate residual voltage and avoid charged particle in the electrophoretic display device (EPD) to cause picture GTG display abnormality because of the dc voltage of accumulation.
Fig. 5 illustrates the part sequential chart according to the driving method of a kind of electrophoretic display device (EPD) of another embodiment of the present invention.In this embodiment, all sweep trace G1-G8 are divided into two groups, first group is odd-numbered scan lines G1, G3, G5, G7, second group is even-line interlace line G2, G4, G6, G8, when vertical synchronizing signal Vsync drives first group of pictures 506, use first driving order 502 to scan first group as priority scanning second group that continues again, for example according to the first sweep trace G1, three scan line G3, the 5th sweep trace G5 and the 7th sweep trace G7, the second sweep trace G2, the 4th sweep trace G4, the 6th sweep trace G6, the 8th sweep trace G8 and drive each sweep trace in regular turn.When vertical synchronizing signal Vsync drives second group of pictures 508, use second driving order 504 to be priority then reverse scan first group again, for example drive each sweep trace in regular turn according to the 8th sweep trace G8, the 6th sweep trace G6, the 4th sweep trace G4, the second sweep trace G2 and the 7th sweep trace G7, the 5th sweep trace G5, three scan line G3, the first sweep trace G1 with reverse scan second group.Each group of pictures comprises at least one picture, is example with Fig. 5, and every group of pictures has two pictures.The level of wantonly two adjacent picture conversion public voltage signal.In addition, present embodiment is to be example with eight sweep traces, yet the present invention is not limited to eight sweep traces, and the actual number of sweep trace can be adjusted according to indivedual situations.
When scanning group to be odd-numbered scan lines with the even-line interlace line interlock and public voltage signal Vcom at adjacent two pictures during with switching levels, can help to solve the problem of the screen D C balance of electrophoretic display device (EPD).
Fig. 6 illustrates the part sequential chart according to the driving method of a kind of electrophoretic display device (EPD) of another embodiment of the present invention.In this embodiment, all sweep traces are divided into three groups, first group is sweep trace G1, G4 and G7, and second group is sweep trace G2, G5 and G8, and the 3rd group is sweep trace G3, G6 and G9.When vertical synchronizing signal Vsync drives first group of pictures 606, use first driving order 602 to be priority to scan first group, for example at first scan the first sweep trace G1, the 4th sweep trace G4 and the 7th sweep trace G7; Second sweep trace G2, five sweep trace G5, the eight sweep trace G8 of scanning in second group continues; Scan three scan line G3, the 6th sweep trace G6, the 9th sweep trace G9 in the 3rd group at last.When vertical synchronizing signal Vsync drives second group of pictures 608, use second driving order 604 to be priority with reverse scan the 3rd group, for example at first scan the 9th sweep trace G9, the 6th sweep trace G6, three scan line G3; The 8th sweep trace G8, the 5th sweep trace G5, the second sweep trace G2 in reverse scan second group continue; The 7th sweep trace G7, the 4th sweep trace G4, the first sweep trace G1 in last reverse scan first group.Each group of pictures comprises at least one picture, is example with Fig. 6, and every group of pictures has six pictures.Three pictures of every demonstration are just changed the level of public voltage signal Vcom, the public voltage signal Vcom of each driving order corresponding one-period.In addition, present embodiment is to be example with nine sweep traces, yet the present invention is not limited to nine sweep traces, and the actual number of sweep trace can be adjusted according to indivedual situations.
Be divided into three staggered groups by scanning line drawing, and public voltage signal Vcom just carries out level conversion at three pictures of every scanning, can help to solve the problem of the screen D C balance of electrophoretic display device (EPD).
By the invention described above embodiment as can be known, driving method of the present invention adopts multiple driving order and drives all sweep traces on the display device, and the public voltage signal of collocation level reverse speed characterisstic is with the balance dc voltage, with the GTG display abnormality phenomenon of charged particle because of showing that the GTG mistake causes of avoiding electrophoretic display device (EPD).
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (28)
1. driving method, in order to drive an electrophoretic display device (EPD), this electrophoretic display device (EPD) comprises the multi-strip scanning line, this driving method comprises the following steps:
When the picture in the scanning one k group of pictures, according to this multi-strip scanning line of order activation in regular turn from top to bottom; And
When the picture in scanning one (k+1) group of pictures, according to this multi-strip scanning line of order activation in regular turn from the bottom to top;
Wherein each group of pictures has at least one picture, and k is the positive integer more than or equal to 1.
2. driving method according to claim 1, wherein this electrophoretic display device (EPD) also comprises a public electrode wire, in order to provide public voltage signal to this electrophoretic display device (EPD), this method also comprises the public voltage signal that wantonly two adjacent pictures is provided different voltage level.
3. driving method according to claim 1, wherein this electrophoretic display device (EPD) also comprises a public electrode wire, in order to provide public voltage signal to this electrophoretic display device (EPD), this method also comprises appoints the public voltage signal that two adjacent pictures is provided the opposite voltage level.
4. driving method according to claim 1, wherein this electrophoretic display device (EPD) also comprises a public electrode wire, in order to provide public voltage signal to this electrophoretic display device (EPD), this method also comprises the public voltage signal that wantonly two adjacent half group of pictures is provided different voltage level.
5. driving method according to claim 1, wherein each group of pictures has two pictures.
6. driving method, in order to drive an electrophoretic display device (EPD), this driving method comprises the following steps:
Provide an electrophoretic display device (EPD) to comprise many group sweep traces, every group of sweep trace comprises the multi-strip scanning line, and the multi-strip scanning line of these many group sweep traces is to intermesh; And
When the picture in the scanning one k group of pictures, the multi-strip scanning line of each group sweep trace of foundation one order activation in regular turn from top to bottom; And
When the picture in scanning one (k+1) group of pictures, the multi-strip scanning line of this each group sweep trace of foundation one order activation in regular turn from the bottom to top;
Wherein each group of pictures has at least one picture, and k is the positive integer more than or equal to 1.
7. driving method according to claim 6, wherein this electrophoretic display device (EPD) also comprises a public electrode wire, in order to provide public voltage signal to this electrophoretic display device (EPD), this method also comprises the public voltage signal that wantonly two adjacent pictures is provided different voltage level.
8. driving method according to claim 6, wherein this electrophoretic display device (EPD) also comprises a public electrode wire, in order to provide public voltage signal to this electrophoretic display device (EPD), this method also comprises the public voltage signal that wantonly two adjacent pictures is provided the opposite voltage level.
9. driving method according to claim 6, wherein this electrophoretic display device (EPD) also comprises a public electrode wire, in order to provide public voltage signal to this electrophoretic display device (EPD), this method also comprises the public voltage signal that wantonly two adjacent half group of pictures is provided different voltage level.
10. driving method according to claim 6, wherein each group of pictures has two pictures.
11. driving method according to claim 6 should many group sweep traces be two groups of sweep traces wherein, was formed by odd-numbered scan lines for first group, was formed by the even-line interlace line for second group.
12. driving method according to claim 6, should many group sweep traces be three groups of sweep traces wherein, be formed by (3N-2) bar sweep trace for first group, be formed by (3N-1) bar sweep trace for second group, be made up of 3N bar sweep trace for the 3rd group, wherein N is the positive integer more than or equal to 1.
13. driving method according to claim 12, wherein each group of pictures has a multiple picture of three.
14. an electrophoretic display device (EPD) comprises:
The multi-strip scanning line; And
One gate drivers is electrically connected on this multi-strip scanning line, in order to drive this multi-strip scanning line;
Wherein, when the picture in the scanning one k group of pictures, foundation one this multi-strip scanning line of order activation in regular turn from top to bottom, and when the picture in scanning one (k+1) group of pictures, foundation one this multi-strip scanning line of order activation in regular turn from the bottom to top, wherein each group of pictures has at least one picture, and k is the positive integer more than or equal to 1.
15. electrophoretic display device (EPD) according to claim 14 also comprises a public electrode wire, in order to provide public voltage signal to this electrophoretic display device (EPD).
16. electrophoretic display device (EPD) according to claim 15, wherein this public electrode wire provides the public voltage signal of opposite voltage level to wantonly two adjacent pictures.
17. electrophoretic display device (EPD) according to claim 15, wherein this public electrode wire provides the public voltage signal of different voltage level to two adjacent pictures.
18. electrophoretic display device (EPD) according to claim 15, wherein this public electrode wire provides the public voltage signal of different voltage level to wantonly two adjacent half group of pictures.
19. electrophoretic display device (EPD) according to claim 14, wherein each group of pictures has two pictures.
20. an electrophoretic display device (EPD) comprises:
N organizes sweep trace, and every group of sweep trace comprises m bar sweep trace, and wherein the sweep trace of this n group sweep trace is to intermesh; And
One gate drivers is electrically connected on this (m*n) bar sweep trace, is somebody's turn to do (m*n) bar sweep trace in order to drive;
Wherein, when the picture in the scanning one k group of pictures, the m bar sweep trace of this each group sweep trace of foundation one order activation in regular turn from top to bottom, and when the picture in scanning one (k+1) group of pictures, according to from the bottom to top the m bar sweep trace of order activation in regular turn this each group sweep trace, n wherein, m is the positive integer greater than 1, each group of pictures has at least one picture, and k is the positive integer more than or equal to 1.
21. electrophoretic display device (EPD) according to claim 20 also comprises a public electrode wire, in order to provide public voltage signal to this electrophoretic display device (EPD).
22. electrophoretic display device (EPD) according to claim 21, wherein this public electrode wire provides the public voltage signal of opposite voltage level to wantonly two adjacent pictures.
23. electrophoretic display device (EPD) according to claim 21, wherein this public electrode wire provides the public voltage signal of different voltage level to wantonly two adjacent pictures.
24. electrophoretic display device (EPD) according to claim 21, wherein this public electrode wire provides the public voltage signal of different voltage level to wantonly two adjacent half group of pictures.
25. electrophoretic display device (EPD) according to claim 20, wherein each group of pictures has two pictures.
26. electrophoretic display device (EPD) according to claim 20, wherein this n group sweep trace is two groups of sweep traces, is formed by odd-numbered scan lines for first group, is formed by the even-line interlace line for second group.
27. electrophoretic display device (EPD) according to claim 20, should many group sweep traces be three groups of sweep traces wherein, formed by (3N-2) bar sweep trace for first group, formed by (3N-1) bar sweep trace for second group, be made up of 3N bar sweep trace for the 3rd group, wherein N is the positive integer more than or equal to 1.
28. electrophoretic display device (EPD) according to claim 27, wherein each group of pictures has a multiple picture of three.
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| CN 201010229598 CN101887694B (en) | 2010-07-09 | 2010-07-09 | Electrophoretic display and driving method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016041309A1 (en) * | 2014-09-15 | 2016-03-24 | 西安诺瓦电子科技有限公司 | Led display control method and control card and led display screen system |
| CN105989806A (en) * | 2014-12-18 | 2016-10-05 | 达意科技股份有限公司 | Display panel and driving method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016041309A1 (en) * | 2014-09-15 | 2016-03-24 | 西安诺瓦电子科技有限公司 | Led display control method and control card and led display screen system |
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| US9978298B2 (en) | 2014-12-18 | 2018-05-22 | E Ink Holdings Inc. | Display panel and driving method thereof |
| CN105989806B (en) * | 2014-12-18 | 2018-10-09 | 元太科技工业股份有限公司 | Display panel and driving method thereof |
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Effective date of registration: 20151008 Address after: Hsinchu City, Taiwan, China Patentee after: Yuantai Science and Technology Industry Co., Ltd. Address before: Hsinchu City, Taiwan, China Patentee before: AU Optronics Corporation |