CN101853634A - Drive method of electrophoresis type display panel and electrophoresis type display device - Google Patents
Drive method of electrophoresis type display panel and electrophoresis type display device Download PDFInfo
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- CN101853634A CN101853634A CN200910130336A CN200910130336A CN101853634A CN 101853634 A CN101853634 A CN 101853634A CN 200910130336 A CN200910130336 A CN 200910130336A CN 200910130336 A CN200910130336 A CN 200910130336A CN 101853634 A CN101853634 A CN 101853634A
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Abstract
The invention relates to a drive method of an electrophoresis type display panel and an electrophoresis type display device using the same. The electrophoresis type display device is provided with an electrophoresis type display panel and a grid drive. The drive method comprises the following steps of: outputting a grid drive signal to the electrophoresis type display panel by using a grid drive to enable the electrophoresis type display panel to update the frame; and during the frame update finishing to next frame update, enabling the grid drive to stop outputting the grid drive signal to the electrophoresis type display panel.
Description
Technical field
The present invention relates to a kind of display, particularly relate to a kind of driving method of electrophoresis type display panel and the electrophoresis type display of use the method.
Background technology
See also shown in Figure 1ly, be the synoptic diagram of a kind of electrophoresis-type (electrophoretic) display device.This electrophoresis type display 100 includes source electrode (source) driver 102, grid (gate) driver 104 and electrophoresis type display panel 106.Source electrode driver 102 couples electrophoresis type display panel 106 by many source electrode lines 108, and gate drivers 104 then couples electrophoresis type display panel 106 by many gate lines 110.Electrophoresis type display panel 106 has a plurality of pixels 112, and each pixel 112 all couples above-mentioned many source electrode lines 108 one of them, and couple above-mentioned many gate lines 110 one of them.
See also shown in Figure 2ly, illustrate wherein a kind of equivalent electrical circuit of pixel 112 shown in Figure 1 and couple relation.Pixel 112 includes MOS (metal-oxide semiconductor) transistor 114, pixel capacitance C
LCAnd storage capacitors C
STThe grid of MOS transistor 114 and source electrode couple gate line 110 and source electrode line 108 respectively, and the drain electrode of MOS transistor 114 is then by pixel capacitance C
LCWith storage capacitors C
STCouple common electric potential V
COMIn addition, also have the existence of stray capacitance (parasitic capacitance) in the pixel 112, indicate with 116,118 and 120 respectively.
See also Fig. 2 and shown in Figure 3, the gate drivers 104 that Fig. 3 illustrates Fig. 1 exports the wherein gate drive signal of a gate line 110 to.So that the update mode of the displaying contents of pixels illustrated 112.When the displaying contents of pixel 112 shown in Figure 2 need upgrade, gate drivers 104 will make gate drive signal S
GTransfer positive potential (promptly greater than zero volt) to by negative potential (promptly less than zero volt), and then transfer negative potential to, forming pulse (pulse) 302, and then allow the MOS transistor 114 can conducting among the T during the activation of pulse 302 by positive potential.Source electrode driver 102 then can transmit source electrode drive signal (not illustrating) by source electrode line 108 during the activation of pulse 302 among the T, so that utilize the source drive signal that new video data is write pixel 112, thus the displaying contents of renewal pixel 112.
Upgrade in the electrophoresis type display panel 106 by above-mentioned mode of operation, the displaying contents of each pixel 112 just can upgrade the shown whole image of electrophoresis type display panel 106.And after the frame update finishing to carry out next time frame update during, gate drivers 104 can make the voltage of all gate drive signals of output maintain negative potential, source electrode driver 102 then makes the source drive voltage of signals of output maintain zero volt.
Please continue to consult Fig. 2 and shown in Figure 3.Because pixel 112 has memory characteristic, just after the update displayed content, even pixel 112 no longer receives any drive signal, pixel 112 also can be maintained original video data, and then makes electrophoresis type display panel 106 can keep presenting of original picture.Therefore, only when upgrading the shown picture of electrophoresis type display panel 106, just need provide drive signal to pixel 112.Yet, from above-mentioned existing known type of drive as can be known, because when not needing frame update, gate drivers 104 but still makes the voltage of the gate drive signal of output maintain negative potential, so that described negative potential still can be by each stray capacitance in gate line 110 and the pixel 112, influence the voltage distribution of pixel 112 internal capacitances, and then cause the change of display frame.In addition, this after frame update, still continue the situation of supply negative voltage to the grid of MOS transistor 114, also be easy to cause the aging of MOS transistor 114.
This shows that the driving method of above-mentioned existing electrophoresis type display panel and electrophoresis type display obviously still have inconvenience and defective, and demand urgently further being improved in method, product structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and conventional method and product do not have appropriate method and structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of driving method of new electrophoresis type display panel and use the explicit device of electrophoresis-type of the method, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The objective of the invention is to, overcome the defective of the driving method existence of existing electrophoresis type display panel, and a kind of driving method of new electrophoresis type display panel is provided, technical matters to be solved is to make electrophoresis type display panel the problem that display frame changes can not occur, and is very suitable for practicality.
Another object of the present invention is to, overcome the defective that the explicit device of existing electrophoresis-type exists, and a kind of novel electrophoresis type display, technical matters to be solved are provided is to make its electrophoresis type display panel the problem that display frame changes can not occur, thereby is suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.The driving method of a kind of electrophoresis type display panel that proposes according to the present invention, this method comprises: utilize gate drivers output gate drive signal to electrophoresis type display panel, so that electrophoresis type display panel carries out the operation of frame update; And after the frame update finishing to carry out next time frame update during, make gate drivers stop to export gate drive signal to electrophoresis type display panel.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid driving method wherein makes gate drivers stop to export the mode of gate drive signal, comprises it being that the stop supplies working power is to gate drivers.
Aforesaid driving method, wherein make gate drivers stop to export the mode of gate drive signal, comprise it being to block the internal core circuit of gate drivers and the guiding path between the outside output terminal, so that the outside output terminal of gate drivers presents floating, wherein above-mentioned internal core circuit is in order to producing above-mentioned gate drive signal, and above-mentioned outside output terminal is in order to couple electrophoresis type display panel.
Aforesaid driving method wherein makes gate drivers stop to export the mode of gate drive signal, comprises it being that to make the gate drivers output voltage be zero gate drive signal.
The object of the invention to solve the technical problems also realizes by the following technical solutions.A kind of electrophoresis type display according to the present invention proposes comprises: electrophoresis type display panel; And gate drivers, couple electrophoresis type display panel, in order to export gate drive signal to electrophoresis type display panel, so that electrophoresis type display panel carries out the operation of frame update, and after the frame update finishing to carry out next time frame update during, gate drivers stops to export gate drive signal to electrophoresis type display panel.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid electrophoresis type display wherein when gate drivers need stop to export gate drive signal, just makes electrophoresis type display stop supplies working power to gate drivers.
Aforesaid electrophoresis type display, wherein when gate drivers need stop to export gate drive signal, just make gate drivers block guiding path between its internal core circuit and the outside output terminal, and then allow the outside output terminal of gate drivers present floating, wherein above-mentioned internal core circuit is in order to producing above-mentioned gate drive signal, and above-mentioned outside output terminal is in order to couple electrophoresis type display panel.
Aforesaid electrophoresis type display, wherein when gate drivers need stop to export gate drive signal, just making the gate drivers output voltage was zero gate drive signal.
By technique scheme, the explicit device of electrophoresis-type of the driving method of electrophoresis type display panel of the present invention and use the method has following advantage and beneficial effect at least: the present invention utilizes gate drivers output gate drive signal to electrophoresis type display panel, so that electrophoresis type display panel carries out the operation of frame update, and after the frame update finishing to carry out next time frame update during, make gate drivers stop to export gate drive signal to electrophoresis type display panel.Therefore, after the frame update finishing to carry out next time frame update during, gate drivers can not exported the voltage distribution that any signal influences the pixel internal capacitance, thereby the display frame of electrophoresis type display panel can not changed to some extent.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is a kind of synoptic diagram of electrophoresis type display.
Fig. 2 illustrates wherein a kind of equivalent electrical circuit of pixel shown in Figure 1 and couples and concerns synoptic diagram.
The gate drivers that Fig. 3 illustrates Fig. 1 exports the wherein gate drive signal synoptic diagram of a gate line to.
Fig. 4 is the synoptic diagram according to the electrophoresis type display of one embodiment of the invention.
Fig. 5 is the synoptic diagram according to the electrophoresis type display of another embodiment of the present invention.
Fig. 6 is the synoptic diagram according to the electrophoresis type display of yet another embodiment of the invention.
Fig. 7 illustrates the gate drive signal synoptic diagram that the gate drivers of Fig. 6 is exported.
Fig. 8 illustrates the main process flow diagram according to the driving method of one embodiment of the invention.
100,400,500,600: electrophoresis type display
102,402: source electrode driver
104,404,504,604: gate drivers
106,406: electrophoresis type display panel 108,408: source electrode line
110,410: gate line
112,412: pixel 114:MOS transistor
116,118,120: stray capacitance 302,702,704: pulse
490: switch 506: the internal core circuit
508: switch 510: outside output terminal
C
LC: pixel capacitance C
ST: storage capacitors
S
G, S
G1～S
GN: gate drive signal S802, S804: step
T: VCC during the activation: working power
V
COM: common electric potential
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the driving method of the electrophoresis type display panel that foundation the present invention is proposed and use its embodiment of the explicit device of electrophoresis-type, method, step, structure, feature and the effect thereof of the method, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of embodiment, when can being to reach technological means that predetermined purpose takes and effect to get one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
See also shown in Figure 4ly, Fig. 4 is the synoptic diagram according to the electrophoresis type display of one embodiment of the invention.This electrophoresis type display 400 includes source electrode driver 402, gate drivers 404 and electrophoresis type display panel 406.Source electrode driver 402 couples electrophoresis type display panel 406 by many source electrode lines 408, and gate drivers 404 then couples electrophoresis type display panel 406 by many gate lines 410.Electrophoresis type display panel 406 has a plurality of pixels 412, and each pixel 412 all couples above-mentioned many source electrode lines 408 one of them, and couple above-mentioned many gate lines 410 one of them.In addition, in Fig. 4, indicating VCC is the working power that electrophoresis type display 400 inside are produced, and indicating 490 then is a switch.When source electrode driver 402 and gate drivers 404 receive working power VCC, source electrode driver 402 and gate drivers 404 ability normal runnings, and then export source electrode drive signal and gate drive signal respectively.
When electrophoresis type display panel 406 needed frame update, electrophoresis type display 400 will conducting (turn on) switch 490, allowed gate drivers 404 can receive working power VCC and can normal running.So, the just exportable gate drive signal of gate drivers 404 is given electrophoresis type display panel 406, source electrode driver 402 then can be exported the source electrode drive signal accordingly, so that utilize the source drive signal that new video data is write pixel 412 in the electrophoresis type display panel 406, thereby make electrophoresis type display panel 406 carry out the renewal of picture.And after the frame update finishing to carry out next time frame update during, electrophoresis type display 400 will be closed (turn off) switch 490, allow gate drivers 404 can't receive working power VCC and can not normal running, thereby stop to export gate drive signal to electrophoresis type display panel 406.Make the source drive voltage of signals maintain zero volt during this period as for 402 of source electrode drivers.
In other words, this embodiment be exactly after the frame update finishing to carry out next time frame update during, make electrophoresis type display 400 stop supplies working power VCC to gate drivers 404.Thus, since after frame update finishing to carry out next time frame update during in, gate drivers 404 can not exported the voltage distribution that any signal influences pixel 412 internal capacitances, so the display frame of electrophoresis type display panel 406 can not change to some extent.
See also shown in Figure 5ly, be synoptic diagram according to the electrophoresis type display of another embodiment of the present invention.This electrophoresis type display 500 is with the difference of electrophoresis type display 400 shown in Figure 4, electrophoresis type display 500 is not provided with switch between gate drivers 504 and working power VCC (not illustrating), but is provided with some switches in the inside of gate drivers 504 more.As shown in Figure 5, gate drivers 504 has internal core circuit 506, a plurality of switch 508 and a plurality of outside output terminal 510, and these switches 508 promptly are extra the settings.Internal core circuit 506 is in order to produce gate drive signal, and outside output terminal 510 is then in order to couple electrophoresis type display panel 406 by gate line 410.
When electrophoresis type display panel 406 needed frame update, gate drivers 504 will all switches 508 of conducting, and the gate drive signal that allows internal core circuit 506 be produced can normally be sent to electrophoresis type display panel 406.And this moment, source electrode driver 402 can be exported the source electrode drive signal accordingly, so that utilize the source drive signal that new video data is write pixel 412 in the electrophoresis type display panel 406, thereby makes electrophoresis type display panel 406 carry out the renewal of picture.After the frame update finishing to carry out next time frame update during, gate drivers 504 will closeall switch 508, the gate drive signal that allows internal core circuit 506 be produced can't be passed to outside output terminal 510, thereby makes gate drivers 504 stop to export gate drive signal to electrophoresis type display panel 406.Make the source drive voltage of signals maintain zero volt during this period as for 402 of source electrode drivers.
In other words, this embodiment be exactly after the frame update finishing to carry out next time frame update during, block the internal core circuit 506 of gate drivers 504 and the guiding path between the outside output terminal 510, so that the outside output terminal 510 of gate drivers 504 presents floating.Thus, since after frame update finishing to carry out next time frame update during in, gate drivers 504 can not exported the voltage distribution that any signal influences pixel 412 internal capacitances, so the display frame of electrophoresis type display panel 406 can not change to some extent.
See also shown in Figure 6ly, be synoptic diagram according to the electrophoresis type display of yet another embodiment of the invention.This electrophoresis type display 600 is with the difference of electrophoresis type display 400 shown in Figure 4, electrophoresis type display 600 is not provided with switch between gate drivers 604 and working power VCC (not illustrating), but make gate drivers 604 export the gate drive signal of special shapes, as shown in Figure 7.Fig. 7 promptly illustrates the gate drive signal that the gate drivers 604 of Fig. 6 is exported.See also shown in Figure 7ly, suppose that gate drivers 604 has coupled N bar gate line 410 altogether, wherein N is a positive integer, then the signal S among Fig. 7
G1, S
G2, S
G3～S
GNBe gate drivers 604 and export the gate drive signal of this N bar gate line 410 to.In Fig. 7, gate drive signal S
G1, S
G2, S
G3～S
GNProduce in regular turn pulse (as indicating shown in 702) during, be exactly electrophoresis type display panel 406 carry out frame updating during.After electrophoresis type display panel 406 frame update finishing, the voltage of all gate drive signals all then maintain zero volt desires to carry out frame updating next time, just gate drive signal S up to electrophoresis type display panel 406
G1, S
G2, S
G3～S
GNProduce pulse once more in regular turn when (as indicating shown in 707).In addition, when electrophoresis type display panel 406 needs frame update, source electrode driver 402 will be exported the source electrode drive signal accordingly, utilizing the source drive signal that new video data is write pixel 412 in the electrophoresis type display panel 406, thereby make electrophoresis type display panel 406 carry out the renewal of picture.And after the frame update finishing to carry out next time frame update during, source electrode driver 402 also makes the source drive voltage of signals maintain zero volt during this period.
In other words, this embodiment be exactly after the frame update finishing to carry out next time frame update during, making gate drivers 604 output voltages is zero gate drive signal.Thus and since after frame update finishing to carry out next time frame update during in, 604 of gate drivers can output voltage be zero gate drive signal, so the display frame of electrophoresis type display panel 406 can not change to some extent.
The teaching of integration the various embodiments described above can be summarized a kind of driving method of electrophoresis type display panel, as shown in Figure 8.Fig. 8 illustrates the main flow process according to the driving method of one embodiment of the invention.This driving method includes the following step: utilize gate drivers output gate drive signal to electrophoresis type display panel, so that electrophoresis type display panel carries out the operation (shown in step S802) of frame update; After the frame update finishing to carry out next time frame update during, make gate drivers stop to export gate drive signal to electrophoresis type display panel (shown in step S804).
Certainly, in step S804, make gate drivers stop to export the mode of gate drive signal, can be that the stop supplies working power is to gate drivers, also can be the guiding path between the internal core circuit that blocks gate drivers (in order to produce gate drive signal) and the outside output terminal (in order to couple electrophoresis type display panel), so that the outside output terminal of gate drivers presents floating.In addition, in step S804, making gate drivers stop to export the mode of gate drive signal, can also be that to make the gate drivers output voltage be zero gate drive signal.
In sum, the present invention utilizes gate drivers output gate drive signal to electrophoresis type display panel, so that electrophoresis type display panel carries out the operation of frame update, and after the frame update finishing to carry out next time frame update during, make gate drivers stop to export gate drive signal to electrophoresis type display panel.Therefore, after the frame update finishing to carry out next time frame update during, gate drivers can not exported the voltage distribution that any signal influences the pixel internal capacitance, thereby the display frame of electrophoresis type display panel can not changed to some extent.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (8)
1. the driving method of an electrophoresis type display panel is characterized in that this method may further comprise the steps:
Utilize gate drivers output gate drive signal to an electrophoresis type display panel, so that this electrophoresis type display panel carries out the operation of frame update; And
After the frame update finishing to carry out next time frame update during, make this gate drivers stop to export gate drive signal to this electrophoresis type display panel.
2. driving method according to claim 1 is characterized in that wherein making this gate drivers to stop to export the mode of gate drive signal, comprises it being that the stop supplies working power is to this gate drivers.
3. driving method according to claim 1, it is characterized in that wherein making this gate drivers to stop to export the mode of gate drive signal, comprise the internal core circuit that blocks this gate drivers and the guiding path between the outside output terminal, so that the outside output terminal of this gate drivers presents floating, wherein above-mentioned internal core circuit is in order to producing above-mentioned gate drive signal, and above-mentioned outside output terminal is in order to couple this electrophoresis type display panel.
4. driving method according to claim 1 is characterized in that wherein making this gate drivers to stop to export the mode of gate drive signal, comprises it being that to make this gate drivers output voltage be zero gate drive signal.
5. electrophoresis type display is characterized in that it comprises:
One electrophoresis type display panel; And
One gate drivers, couple this electrophoresis type display panel, in order to export gate drive signal to this electrophoresis type display panel, so that this electrophoresis type display panel carries out the operation of frame update, and after the frame update finishing to carry out next time frame update during, this gate drivers stops to export gate drive signal to this electrophoresis type display panel.
6. electrophoresis type display according to claim 5 is characterized in that wherein just making this electrophoresis type display stop supplies working power to this gate drivers when this gate drivers need stop to export gate drive signal.
7. electrophoresis type display according to claim 5, it is characterized in that wherein when this gate drivers need stop to export gate drive signal, just make this gate drivers block guiding path between its internal core circuit and the outside output terminal, and then allow the outside output terminal of this gate drivers present floating, wherein above-mentioned internal core circuit is in order to producing above-mentioned gate drive signal, and above-mentioned outside output terminal is in order to couple this electrophoresis type display panel.
8. electrophoresis type display according to claim 5 is characterized in that wherein when this gate drivers need stop to export gate drive signal, and just making this gate drivers output voltage is zero gate drive signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130336A CN101853634A (en) | 2009-03-31 | 2009-03-31 | Drive method of electrophoresis type display panel and electrophoresis type display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130336A CN101853634A (en) | 2009-03-31 | 2009-03-31 | Drive method of electrophoresis type display panel and electrophoresis type display device |
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| CN101853634A true CN101853634A (en) | 2010-10-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345905A (en) * | 2012-11-07 | 2013-10-09 | 友达光电股份有限公司 | Method of Operating an Electrophoretic Display |
| TWI600959B (en) * | 2013-01-24 | 2017-10-01 | 達意科技股份有限公司 | Electrophoretic display and method for driving panel thereof |
-
2009
- 2009-03-31 CN CN200910130336A patent/CN101853634A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345905A (en) * | 2012-11-07 | 2013-10-09 | 友达光电股份有限公司 | Method of Operating an Electrophoretic Display |
| CN103345905B (en) * | 2012-11-07 | 2015-06-17 | 友达光电股份有限公司 | Method of Operating an Electrophoretic Display |
| TWI600959B (en) * | 2013-01-24 | 2017-10-01 | 達意科技股份有限公司 | Electrophoretic display and method for driving panel thereof |
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Application publication date: 20101006 |