CN1804965A - Plasma display driving method and apparatus - Google Patents
Plasma display driving method and apparatus Download PDFInfo
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- CN1804965A CN1804965A CNA2005100020858A CN200510002085A CN1804965A CN 1804965 A CN1804965 A CN 1804965A CN A2005100020858 A CNA2005100020858 A CN A2005100020858A CN 200510002085 A CN200510002085 A CN 200510002085A CN 1804965 A CN1804965 A CN 1804965A
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Abstract
The invention relates to a plasma display which comprises a plurality of addressing electrode, a plurality of discharging units formed by a maintaining electrode and a scanning electrode. The driving method comprises: adding the preset voltage and the preset time impulse signal to the plurality of addressing electrode, maintaining electrode and a scanning electrode by a group of addressing electrode control signal, maintaining electrode control signal and a group of scanning electrode control signal during the addressing period so as to address the discharging unit.
Description
Technical field
The present invention relates to a kind of method for driving plasma display device and device, be used to adjust the scanning pulse driver signal of plasma display in address period (address period), strengthen the foundation of even scanning electrode, improve the addressing effect and reach in the wall electric charge of address period.
Background technology
Science and technology is maked rapid progress and is made electronic product weed out the old and bring forth the new, and the modern is all the more relied on electronic product, and plasma display (Plasma Display Panel; Be called for short PDP) promptly be wherein one of numerous electronic product.Traditional fabrication AC discharge type plasma display is that discharge cell is therebetween enclosed a certain proportion of mixed gas again after making different active layers on a upper substrate and the infrabasal plate, and the periphery with the two carries out involution at last.
The spatial structure and the cross-sectional view of the known AC discharge type plasma display shown in seeing also shown in Figure 1A and Figure 1B.This plasma display 1 has a upper substrate 11 and an infrabasal plate 12.The inboard of upper substrate 11 is laid with many parallel transparency electrodes 111, many auxiliary (bus) electrode 112, an electric inducing layer 113 and protective seams 114 in regular turn.Corresponding this infrabasal plate 12 then is laid with many parallel addressing (address) electrode 121, many barrier ribs that are arranged in parallel 122, a fluorophor 123 and electric inducing layers 124 in regular turn.When this upper substrate 11 reclined with this infrabasal plate 12, this transparency electrode 111 was vertical configuration mutually with this addressing electrode 121, and its confluce system forms a discharge cell.When applying a voltage to specific discharge cell, can make the electric inducing layer 113 of correspondence position and electric inducing layer 124 in specific discharge cell, discharge, induced fluorescence body 123 is radiated coloured light.
The transparency electrode 111 that the inner surface of upper substrate 11 forms many each intervals and is arranged in parallel, and on transparency electrode 111, form the line impedence that auxiliary electrode 112 reduces transparency electrode 111.And now in the technology this discharge cell 13 use three-electrode methods, be about to adjacent two parallel transparency electrodes 111 (comprise and keep electrode 111a and scan electrode 111b) on this upper substrate 11, and this addressing electrode 121 of infrabasal plate 12 relative positions forms three-electrode structure.When applying a voltage to above-mentioned electrode, can make the electric inducing layer 113 of correspondence position and electric inducing layer 124 in discharge cell 13, discharge, make the mixed gas of inclosure produce ultraviolet light (UV) because of discharge.By the fluorophor 123 of this discharge cell 13 places coating of ultraviolet excitation, order red (R), green (G), blue three-color phosphor such as (B) can produce visible light, and then show image again.
In conventional art, the generation of a whole frame (frame) image of plasma display is made of a plurality of subframes (sub-frame) that produce according to order.And the display action of picture frame each time then needs respectively via removing (erase), addressing (address) and keeping discharge three steps such as (sustain discharge) and reach.Wherein, remove the residual charge that step system is used to remove all electrodes of plasma display.Address step is to be used for making the discharge cell 13 interior scan electrode 111b in precalculated position can set up enough wall electric charges (wall charge), so that keep in the discharge step follow-up, can be by the pulse voltage that imposes preset frequency, bring out and the discharge (discharge) of discharge cell 13 of keeping those precalculated positions with luminous.
In the addressing technique that plasma display adopted, having a kind of is a plurality of scan electrode 111b to be put in order according to it divide into odd scanning electrode and even scanning electrode now.And in address period (addressperiod), after plasma display is earlier scanned addressing in regular turn one by one to all odd scanning electrodes, come each even scanning electrode is carried out addressing respectively again.Yet, because the resolution of plasma display is more and more high, relatively neighboring discharge cells 13 between the interval also more and more little.So, when finishing the addressing of odd scanning electrode, the wall electric charge of being set up on the odd scanning electrode of its predetermined discharge cell 13 that will be luminous, will have influence on follow-up when carrying out the addressing of even scanning electrode, the foundation of the wall electric charge of the even scanning electrode that it is adjoining.So, will cause the part even scanning electrode set up not enoughly in the wall electric charge of address period, and cause addressing uncertain, and follow-up keep interdischarge interval (sustain discharge period) can't stabilized illumination.
US Pub.No.2002/0097003 A1 discloses a kind of plasma display and driving method and device, it is by finishing one when keeping interdischarge interval (sustain discharge period), impose the pulse wave that doubles sparking voltage to keeping electrode, make the residual charge on the electrode can have the effect of automatic elimination, and can reach the function that improves addressing effect and display quality.Yet this technology need use two groups and keep electrode drive circuit and drive respectively that odd number is kept electrode and even number is kept electrode, makes that the voltage that this even number is kept electrode can be 0 volt when the scanning addressing of carrying out odd scanning electrode; And when carrying out the scanning addressing of even scanning electrode, the voltage that odd number is kept electrode then is 0 volt.So though US Pub.No.2002/0097003A1 can improve the addressing effect, yet its circuit design is relatively complicated, circuit cost is also higher relatively.
Summary of the invention
Fundamental purpose of the present invention provides a kind of method for driving plasma display device and device, can must not increase under the prerequisite of circuit cost and circuit complexity, reaches the effect that improves addressing effect and display quality.
Another object of the present invention provides a kind of method for driving plasma display device and device, is applicable to earlier the plasma display Driving technique of coming each even scanning electrode is carried out respectively addressing after all odd scanning electrodes are scanned addressing in regular turn one by one, again.By in address period, the time span of the pulse signal that the time span that makes the pulse signal that each even scanning electrode accepts is accepted greater than each odd scanning electrode is to solve the untrue shortcoming of even scanning electrode addressing.
A further object of the present invention provides a kind of method for driving plasma display device and device, it only need use the single sustain electrode drive circuit to drive all simultaneously and keep electrode, and cooperate the dual numbers scan electrode to provide than the odd scanning electrode addressing pulse signal of longer time, can solve the untrue shortcoming of even scanning electrode addressing.
In order to achieve the above object, in a preferred embodiment of method for driving plasma display device of the present invention and device, plasma display includes by a plurality of addressing electrodes, keeps a plurality of discharge cells that electrode and scan electrode constitute.And a plurality of scan electrodes put in order and are divided into some odd scanning electrodes and some even scanning electrodes according to it.
This driving method includes: in an address period, respectively with a group addressing electrode control signal, keep the electrode control signal, and one group of scan electrode control signal come a plurality of addressing electrodes, keep the pulse signal that electrode and scan electrode impose the predetermined voltage and the schedule time respectively, with to the in addition addressing of the discharge cell in precalculated position; Wherein, in this address period earlier in regular turn one by one in addition after the addressing, again each even scanning electrode is carried out addressing respectively to all odd scanning electrodes, and, the pulse signal that the time span of the pulse signal that this odd scanning electrode is accepted is accepted less than even scanning electrode.So, can must not increase under the prerequisite of circuit cost and circuit complexity, improve addressing effect and display quality.
Wherein, the time span of the pulse signal that each even scanning electrode is accepted is identical, and the time span of the pulse signal accepted of each odd scanning electrode also is identical.
Wherein, in this address period, this keep the electrode control signal be single signal its be used for controlling all electrodes of keeping, that is the electrodes of keeping all in address period are connected in parallel.
Below in conjunction with drawings and Examples, the present invention is described in detail.
Description of drawings
Figure 1A is the perspective view of conventional AC discharge type plasma display;
Figure 1B is the cross-sectional view of conventional AC discharge type plasma display;
Fig. 2 is the first preferred embodiment circuit block diagram of plasma display device driver of the present invention;
Fig. 3 is first preferred embodiment of method for driving plasma display device of the present invention, and it is in the time sequential routine of address period oscillogram;
Fig. 4 is the time sequential routine oscillogram of second preferred embodiment of method for driving plasma display device of the present invention.
Description of reference numerals: 1～plasma display; 11～upper substrate; 111～transparency electrode; 111a～keep electrode; 111b～scan electrode; 112～many auxiliary electrodes; 113～electric inducing layer; 114～protective seam; 12～infrabasal plate; 121～addressing electrode; 122～barrier rib; 123～fluorophor; 124～electric inducing layer; 13～discharge cell; C11 ... Cm2n～discharge cell; X～keep electrode; A1, A2 ... Am～addressing electrode; Y1, Y2 ... Y2n-1, Y2n～scan electrode; 30～plasma display device driver; 31～addressing electrode driving circuit; 32～keep electrode drive circuit; 33～scan electrode driving circuit; 331～odd scanning electrode driving circuit; 332～even scanning electrode driving circuit; 34～control circuit; Ta～very first time length; Tb～second time span; Vs/2 ,-Vs/2～predetermined voltage; A ELECTRODE～addressing electrode control signal; X1～2n ELECTRODE～keep electrode control signal; Y1, Y2 ... Y2n-1, Y2nELECTRODE～scan electrode control signal.
Embodiment
The cardinal principle of method for driving plasma display device of the present invention is, in three electrode AC discharge type plasma displays, by behind the predetermined voltage pulse signal that earlier all odd scanning electrodes is imposed respectively very first time length in address period, all even scanning electrodes are imposed respectively the predetermined voltage pulse signal of second time span again.And this second time span is greater than very first time length.Because even scanning electrode can obtain the pulse signal of long period and carry out addressing, thus can overcome the influence of the residual charge that is had on the contiguous odd scanning electrode, and set up enough wall electric charges on even scanning electrode.Thus, in address period, no matter be that the odd scanning electrode or the pre-position of even scanning electrode all can obtain accurate and good addressing effect, and at follow-up interdischarge interval (the sustain discharge period) stabilized illumination of keeping, and then obtain better display quality.
See also Fig. 2 and method for driving plasma display device of the present invention shown in Figure 3 and first preferred embodiment of device.Wherein, Fig. 2 is the first preferred embodiment circuit block diagram of plasma display device driver of the present invention.Fig. 3 then is first preferred embodiment of method for driving plasma display device of the present invention, and it is in the time sequential routine of address period oscillogram.
As shown in Figure 2, the plasma display of present embodiment includes a plurality of addressing electrode that is provided at predetermined intervals (A1, A2, Am), a plurality of be provided at predetermined intervals keep electrode (X), and a plurality of scan electrode (Y1 that are provided at predetermined intervals, Y2 ... Y2n-1, Y2n).Respectively keep electrode (X) and scan electrode (Y1, Y2 ... Y2n-1, Y2n) be alternately arrange be provided with and respectively with addressing electrode (A1, A2 ... Am) on projecting direction, intersect, with constitute a plurality of discharge cells (C11 ... Cm2n).And, scan electrode (Y1, Y2 ... Y2n-1, Y2n) according to its put in order more can be divided into several odd scanning electrodes (Y1, Y3 ... Y2n-1) and several even scanning electrodes (Y2, Y4 ... Y2n).The plasma display device driver 30 of present embodiment then includes: an addressing electrode driving circuit 31, is kept electrode drive circuit 32, one scan electrode drive circuit 33 and a control circuit 34.Wherein, scan electrode driving circuit 33 also can comprise odd scanning electrode driving circuit 331 and even scanning electrode driving circuit 332, for drive respectively those odd scanning electrodes (Y1, Y3 ... Y2n-1) and even scanning electrode (Y2, Y4 ... Y2n).
Please continue with reference to figure 2, addressing electrode driving circuit 31 be coupled in each addressing electrode (A1, A2 ... Am), can drive respectively each addressing electrode (A1, A2 ... Am).In this preferred embodiment, keep the first parallel connection of electrode (X) after, be coupled in again and keep electrode drive circuit 32, make and keep electrode drive circuit 32 exportable single control signals and drive all electrodes (X) of keeping simultaneously.In addition, odd scanning electrode driving circuit 331 be coupled in each odd scanning electrode (Y1, Y3 ... Y2n-1), and can drive respectively each odd scanning electrode (Y1, Y3 ... Y2n-1).And even scanning electrode driving circuit 332 be coupled in each even scanning electrode (Y2, Y4 ... Y2n), for drive respectively each even scanning electrode (Y2, Y4 ... Y2n).As for control circuit 34, then be coupled in addressing electrode driving circuit 31, keep electrode drive circuit 32, odd scanning electrode driving circuit 331 and even scanning electrode driving circuit 332, in order to control the start of aforementioned each driving circuit.In an address period (address period), control circuit 34 control addressing electrode driving circuits 31, keep electrode drive circuit 32, odd scanning electrode driving circuit 331 and even scanning electrode driving circuit 332, produce a group addressing electrode control signal respectively, one keeps the electrode control signal, one group of odd scanning electrode control signal and one group of even scanning electrode control signal, come a plurality of addressing electrode (A1, A2, Am), a plurality of electrode (X) and a plurality of scan electrode (Y1 of keeping, Y2, Y2n-1, Y2n) impose the pulse signal of the predetermined voltage and the schedule time respectively, with to the discharge cell in precalculated position (C11 ... Cm2n) addressing in addition.
Because method for driving plasma display device of the present invention, mainly be for preferable addressing effect is provided, so, first preferred embodiment as shown in Figure 3, in the time of will only producing a subframe (sub-frame) at method for driving plasma display device of the present invention, the time sequential routine oscillogram of address period wherein (address period) describes, as for other such as (erase period) during removing and the time sequential routine of keeping interdischarge interval (sustaindischarge period), owing to be not major technique feature of the present invention, so in temporarily not mentioning herein.Anyly can from known technology, select (erase period) and the time sequential routine technology of keeping interdischarge interval (sustain discharge period) during the suitable removing per capita, cooperate the time sequential routine technology of address period of the present invention (address period) to use.
Please also refer to Fig. 2 and Fig. 3, in first preferred embodiment of method for driving plasma display device of the present invention, control circuit 34 is in an address period, predetermined voltage (Vs/2) pulse signal that control earlier makes odd scanning electrode driving circuit 331 produce some very first time length (Ta) is earlier given each odd scanning electrode (Y1 respectively, Y3, Y2n-1) afterwards, control makes even scanning electrode driving circuit 332 produce predetermined voltage (Vs/2) pulse signal of some second time spans (Tb) again, give each even scanning electrode (Y2 respectively, Y4 ... Y2n).That is, in address period, earlier to all odd scanning electrodes (Y1, Y3 ... Y2n-1) all scanned one by one the intact back of addressing, again carry out in regular turn even scanning electrode (Y2, Y4 ... Y2n) scanning addressing.Wherein, each even scanning electrode (Y2, Y4 ... Y2n) time span of the pulse signal of being accepted (Tb) be identical, and each odd scanning electrode (Y1, Y3 ... Y2n-1) time span of the pulse signal of being accepted (Ta) also is identical.Simultaneously, control circuit 34 is also controlled and is made addressing electrode driving circuit 31 and keep electrode drive circuit 32 and produce preset frequency, time span and voltage respectively: a group addressing electrode control signal (only enumerating an A ELECTRODE signal in Fig. 2 is example), and one keep electrode control signal (as the X1 among the figure～2n ELECTRODE signal), to cooperate each scan electrode control signal (Y1, Y2, Y2n-1, Y2n ELECTRODE signal), reach the addressing purpose.
This preferred embodiment is characterised in that, even scanning electrode (Y2, Y4 ... Y2n) second time span (Tb) of the pulse signal of being accepted greater than odd scanning electrode (Y1, Y3 ... Y2n-1) very first time length (Ta) of the pulse signal of being accepted.Because the even scanning electrode (Y2 of later addressing, Y4, Y2n) pulse signal that can obtain the long period carries out addressing, so can overcome contiguous odd scanning electrode (Y1, Y3 ... Y2n-1) go up when addressing a little earlier the influence of residual wall electric charge, and set up enough wall electric charges in even scanning electrode (Y2, Y4 ... Y2n) on.Thus, in address period, no matter be odd scanning electrode (Y1, Y3, Y2n-1) or even scanning electrode (Y2, Y4 ... Y2n) pre-position all can obtain accurate and good addressing effect, and at follow-up interdischarge interval (the sustain discharge period) stabilized illumination of keeping, and then obtain better display quality.In addition, more because the electrode control signal (X1～2n ELECTRODE signal) of keeping of the present invention is by keeping the single control signal that electrode drive circuit 32 is produced, it is used for controlling all electrodes (X) of keeping.So plasma display device driver of the present invention only need use single sustain electrode drive circuit 32, its circuit complexity is all relative lower than the application of US Pub.No.2002/0097003 A1 with circuit cost.
Certainly, in another embodiment, can change design, make in address period, earlier to all even scanning electrodes (Y2, Y4 ... Y2n) all scanned one by one the intact back of addressing, again carry out in regular turn odd scanning electrode (Y1, Y3 ... Y2n-1) scanning addressing.At this moment, in address period, this even scanning electrode (Y2 that is addressed early, Y4 ... Y2n) time span of the pulse signal of being accepted then needs less than the later odd scanning electrode (Y1 that is addressed, Y3 ... Y2n-1) time span of the pulse signal of being accepted.
In other preferred embodiment of the present invention of the following stated, because most of assembly is the same as or similar to aforesaid embodiment.So identical or similar assembly will give identical numeral number and component Name and repeat no more its detailed formation, and only be after former numeral number, to increase by an English alphabet as a means of difference.
See also the time sequential routine oscillogram of second preferred embodiment of method for driving plasma display device of the present invention shown in Figure 4.In Fig. 4, only enumerate one group respectively and keep the waveform that electrode X1 and scan electrode Y1 illustrate to represent the keeping of each odd number group/scan electrode group, simultaneously to keep the waveform that electrode X2 and scan electrode Y2 illustrate to represent the keeping of each even number set/scan electrode group.In present embodiment, earlier all odd scanning electrode Y1 are all scanned the intact back of addressing one by one, carried out the scanning addressing of each even scanning electrode Y2 in regular turn more equally in address period, and, the time span (Tb) of the pulse signal still accepted less than the later even scanning electrode Y2 that is addressed of the time span (Ta) of the pulse signal accepted of the odd scanning electrode Y1 that is addressed early.As for, second preferred embodiment as shown in Figure 4 and the difference of aforementioned first preferred embodiment are: in second preferred embodiment shown in Figure 4, keep the electrode control signal and comprise that also first keeps electrode control signal (X1 ELECTRODE signal) and second and keep electrode control signal (X2 ELECTRODE signal), it is controlled respectively, and a plurality of odd numbers are kept electrode X1 and a plurality of even number is kept electrode X2.And in address period, odd number is kept electrode X1 and even number and is kept electrode X2 and be connected in parallel and accept same group of controlling signal.But, (erase period) is when keeping interdischarge interval (sustain discharge period) during removing, odd number keep electrode X1 and even number keep controlling signal that electrode X2 accepted then can be different (just odd number keep electrode X1 and even number keep electrode X2 and during removing, be not connected in parallel when keeping interdischarge interval), so can make the scope of using of the present invention more extensive.
But above-described embodiment shall not be applied to restriction range of application of the present invention, and the scope that protection scope of the present invention should be included by the definition and the impartial variation thereof of claim of the present invention is main.Therefore, all equalizations of being done according to the present patent application claim change and modify, and will not lose main idea of the present invention place, also do not break away from the spirit and scope of the present invention, all should be considered as further enforcement of the present invention.
Claims (10)
1, a kind of method for driving plasma display device, this plasma display comprises a plurality of addressing electrodes, a plurality of electrode, and a plurality of scan electrodes kept, respectively keeping electrode and scan electrode is alternately to arrange setting and crossing on projecting direction with addressing electrode respectively, constituting a plurality of discharge cells, and these a plurality of scan electrodes put in order according to it and can be divided into some odd scanning electrodes and some even scanning electrodes; This plasma display drive method comprises the following steps:
In an address period, respectively with a group addressing electrode control signal, keep the electrode control signal, and one group of scan electrode control signal to a plurality of addressing electrodes, a plurality ofly keep the pulse signal that electrode and a plurality of scan electrode impose the predetermined voltage and the schedule time respectively, with to the in addition addressing of the discharge cell in precalculated position;
Wherein, the time span of the pulse signal accepted of the time of the pulse signal accepted of this odd scanning electrode and even scanning electrode is different.
2, method for driving plasma display device as claimed in claim 1, wherein, in this address period, after this group scan electrode control signal all imposes pulse signal to all odd scanning electrodes earlier, again all even scanning electrodes are all imposed pulse signal, and, the time span of the pulse signal that the time span of the pulse signal that this even scanning electrode is accepted is accepted greater than odd scanning electrode.
3, method for driving plasma display device as claimed in claim 2, wherein, the time span of the pulse signal that each even scanning electrode is accepted is identical, and the time span of the pulse signal accepted of each odd scanning electrode also is identical.
4, method for driving plasma display device as claimed in claim 2, wherein, in this address period, these a plurality of electrodes of keeping are connected in parallel, so this to keep the electrode control signal be single signal, to be used for controlling all electrodes of keeping.
5, a kind of method for driving plasma display device, this plasma display comprise a plurality of addressing electrodes, a plurality of electrode, and a plurality of scan electrodes kept, and these a plurality of scan electrodes put in order according to it and are divided into some odd scanning electrodes and some even scanning electrodes; This plasma display drive method comprises the following steps:
In an address period, these a plurality of scan electrodes accept to have one group of scan electrode control signal, and behind should the group scan electrode control signal first predetermined voltage pulse signal that all odd scanning electrodes is imposed very first time length respectively, all even scanning electrodes are imposed the predetermined voltage pulse signal of second time span respectively again;
Wherein, this second time span is greater than very first time length.
6, method for driving plasma display device as claimed in claim 5, wherein, the time span of the pulse signal that each even scanning electrode is accepted is identical, and the time span of the pulse signal accepted of each odd scanning electrode also is identical.
7, method for driving plasma display device as claimed in claim 5, wherein, in this address period, these a plurality of electrodes of keeping are connected in parallel.
8, a kind of plasma display device driver, this plasma display comprises a plurality of addressing electrodes, a plurality of electrode, and a plurality of scan electrodes kept, respectively keep electrode and scan electrode and alternately arrange setting and crossing on projecting direction with those addressing electrodes respectively, constituting a plurality of discharge cells, and these a plurality of scan electrodes put in order according to it and are divided into some odd scanning electrodes and some even scanning electrodes; This plasma drive device for display includes:
One addressing electrode driving circuit is coupled in each addressing electrode, can drive each addressing electrode respectively;
One keeps electrode drive circuit, is coupled in respectively to keep electrode, can drive all and keep electrode;
One odd scanning electrode driving circuit is coupled in each odd scanning electrode, can drive each odd scanning electrode respectively;
One even scanning electrode driving circuit is coupled in each even scanning electrode, can drive each even scanning electrode respectively; And
One control circuit is coupled in this addressing electrode driving circuit, keeps electrode drive circuit, odd scanning electrode driving circuit and even scanning electrode driving circuit, in order to control described each driving circuit operation;
Wherein, this control circuit is in an address period, the predetermined voltage pulse signal that makes the odd scanning electrode driving circuit produce some very first time length is given each odd scanning electrode respectively and is made the predetermined voltage pulse signal of some second time spans of this even scanning electrode driving circuit generation give each even scanning electrode respectively, and this second time span is different with very first time length.
9, plasma display device driver as claimed in claim 8, wherein, in this address period, after this control circuit makes this odd scanning electrode driving circuit all impose pulse signal to all odd scanning electrodes earlier, make this even scanning electrode driving circuit all impose pulse signal again to all even scanning electrodes, and this second time span is greater than very first time length.
10, plasma display device driver as claimed in claim 8, wherein, second time span of the pulse signal that each even scanning electrode is accepted is identical, and the very first time length of the pulse signal that each odd scanning electrode is accepted also is identical, and, in this address period, these a plurality of electrodes of keeping are connected in parallel, so this is kept electrode drive circuit and produces single control signal and control all electrodes of keeping simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2005100020858A CN1804965A (en) | 2005-01-14 | 2005-01-14 | Plasma display driving method and apparatus |
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| CNA2005100020858A CN1804965A (en) | 2005-01-14 | 2005-01-14 | Plasma display driving method and apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102473375A (en) * | 2009-07-10 | 2012-05-23 | 松下电器产业株式会社 | Plasma display panel driving method and plasma display device |
| CN102789759A (en) * | 2012-07-30 | 2012-11-21 | 电子科技大学 | Method for improving contrast of PDP (Plasma Display Panel) |
-
2005
- 2005-01-14 CN CNA2005100020858A patent/CN1804965A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102473375A (en) * | 2009-07-10 | 2012-05-23 | 松下电器产业株式会社 | Plasma display panel driving method and plasma display device |
| CN102789759A (en) * | 2012-07-30 | 2012-11-21 | 电子科技大学 | Method for improving contrast of PDP (Plasma Display Panel) |
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