CN1284703A - Driving method of plasma display - Google Patents
Driving method of plasma display Download PDFInfo
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- CN1284703A CN1284703A CN99117726A CN99117726A CN1284703A CN 1284703 A CN1284703 A CN 1284703A CN 99117726 A CN99117726 A CN 99117726A CN 99117726 A CN99117726 A CN 99117726A CN 1284703 A CN1284703 A CN 1284703A
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Abstract
The display of subfield includes resetting, scanning and maintaining discharge of a plasma display, and generally, the display of one frame consists of the display of several subfields. The drive of the present invention includes: dividing a plasma display into several, say two, areas and then resetting and scanning the areas successively. The maintaining discharge of any area is completed while the scanning of the next area is completed, and this can increase maintaining period. In addition, any area is reset only when the other areas do not in their scanning and maintaining period, or else the signal in different area produces mutual interference.
Description
The present invention relates to a kind of driving method, be particularly related to a kind of driving method of plasma scope, it mainly is that plasma scope is divided into two zones, and repeat the scanning motion in these two zones and keep action, using increases the time scale of keeping action and then the brightness that improves plasma scope.
In the driving method of existing plasma scope, plasma scope all is regarded as an integral body, and its basic driver principle is that a son display action (Subfield) is divided into: reset action (Reset), scanning motion (Scan), keep action (Sustain).Eight son display actions (is example with 256 look GTG plasma scopes) then repeat these three actions in regular turn to finish a frame display action (Frame).
In this method, account for most of the time of entire frame display action of scanning motion, but minimum to system's contribution.256 look GTG plasma scopes with sharpness 600 * 400 are example, action 150us consuming time, scanning motion 3us/ line consuming time (display line) if reset, the time that then only is used in reset action and scanning motion in each frame display action just needs (150+3 * 600) * 8=1.56ms, account for more than ninety percent of entire frame display action (with the NTSC standard is example, and each frame display action only can use 1.67ms).This makes the pot life of keeping action become very limited, and then makes plasma scope can't produce enough brightness.In addition, because the characteristic consuming time of scanning motion, this method also can't be applicable in the plasma scope of high definition more, as 800 * 600,1280 * 1024 or high definition more.
With reference to Fig. 1, this is the planimetric map (is example with sharpness 600 * 400) of three-electrode surface discharge plasma scope (three-electrode surfacedischarge PDP).Wherein, label 1 is a plasma display; Label 2 is X electrodes; Label 31～3600th, the Y electrode; Label 41～4400th, data electrode; Label 5 is to be formed at X, Y electrode pair and data electrode 41～4400 has a common boundary and sum has 600 * 400 display unit; Label 6 is barriers (Rib) of separating display unit 5; Label 71～7600 then is display line (Display line).
Fig. 2 is the basic structure synoptic diagram of display unit 5 in Fig. 1 plasma scope.Wherein, label 8 is back substrate of glass (rear glass substrate); Label 9 is front glass substrate (front glasssubstrate); Label 10 is the insulation courses that cover X electrode and Y electrode; Numeral 11 is protective seams of magnesium oxide (MgO) and so on; Label 12 is fluorophor; 13 of labels are discharge spaces.
Fig. 3 is the circuit block diagram of Fig. 1 plasma scope and peripheral circuit thereof.Wherein, label 14 provides and writes pulse (Write pulse) and keep the X driving circuit that discharge pulse (Sustain discharge pulse) is given X electrode 2; Label 15 provides the Y drive IC that Y electrode 31～3600 is given in data pulse (Addressing pulse); Label 16 provides the Y driving circuit that Y drive IC 15 is given in data pulse: label 17 provides the data-driven IC that data electrode 41～4400 is given in data pulse; Label 18 then is that control X driving circuit 14, Y drive IC 15, Y drive electricity and put 16 and the control circuit of addressing drive IC 17.
Fig. 4 is in the driving method of Fig. 1 plasma scope, the synoptic diagram of a whole frame display action.In this example, a frame display action is made of 8 sons display action SF1～SF8.Each son display action then comprises: one resets moves, action is kept in one scan action and.The action of resetting all is the same with the needed time of scanning motion to any son display action, that is to say: Tw1=Tw2=...=Tw7; And Ta1=Ta2=...=Ta7.The time of keeping action is then according to both certainty ratio arrangements, to constitute various different GTGs.With 256 look GTGs (8 son display actions), the time scale of respectively keeping action can be 1: 2: 4: 8: 16: 32: 64: 128 or other selected ratios.
In addition, the needed time of scanning motion is proportional to the quantity of display line, and therefore when sharpness improved, scanning motion shared ratio in the frame display action also can increase synchronously.This produces two problems to I haven't seen you for ages: at first, because the time that each frame display action can utilize is fixed, the time of therefore elongating scanning motion also just equals to shorten the time of keeping action.But the time span of keeping action has determined directly whether the brightness of plasma scope is enough, so use the situation that luminance shortage can appear in the plasma scope of this method.In addition, because the The limited time of scanning motion is in the time that the entire frame display action can utilize, so this method can not be applied in the plasma scope of high definition.
Thus, fundamental purpose of the present invention is the driving method that a kind of plasma scope is provided, and it can increase keeps the shared time scale of action, and then improves the brightness of plasma scope and be applicable in the plasma scope of high definition more.
For reaching above-mentioned and other purpose, the invention provides a kind of driving method of plasma scope, its replacement, scan, keep discharge one plasma display to finish a son display action.Usually, a frame display action is made of an a plurality of son display action.The driving method of plasma scope of the present invention then comprises the following steps: at first, and plasma scope is divided into a plurality of (as two) zone; Then, reset, scan these zones more in regular turn, the scanning motion of keeping a discharging action and a time zone in arbitrary zone is carried out simultaneously, keep the time of action with increase.In addition, the replacement in arbitrary zone action then can not be with the scanning in other zones, keep action repeats, to avoid the signal phase mutual interference between zones of different.
In this driving method, if plasma scope is divided into two zones, then the action of keeping of first area can be carried out simultaneously at the scanning motion of second area, and the action of keeping of second area is then carried out simultaneously at the scanning motion of first area.
In addition, the replacement of first area action is to carry out after the scanning motion of second area finishes, and can not and keep action and repeat with the scanning motion of second area.The replacement of second area action is then carried out after the scanning motion of first area finishes, and can not and keep action and repeat with the scanning motion of first area.
Moreover being divided into two zones with plasma scope is example, and the driving method of plasma scope provided by the present invention comprises the following steps: (a) at first, and plasma scope is divided into first area and second area.(b) then, carry out the replacement action of first area; (c) scanning motion that carries out the first area also carries out the action of keeping of second area simultaneously; (d) replacement of carrying out second area is moved; (e) and, carry out the scanning motion of second area and carry out the action of keeping of first area simultaneously.Step (b) to (e) is the step of a son display action.Complete frame display action then iteron field display action for several times to finish.
Wherein, when the replacement of first area action was carried out, second area was to be in idle state.And the replacement of second area is moved when carrying out, and the first area then is in idle state.
For the aforesaid purpose of the present invention, feature and advantage De Gengyi are understood, be to enumerate preferred embodiment, and conjunction with figs., further be described as follows.
Fig. 1 is the planimetric map of known three-electrode surface discharge plasma scope;
Fig. 2 is the basic structure synoptic diagram of display unit in Fig. 1 plasma scope;
Fig. 3 is the calcspar of Fig. 1 plasma scope and peripheral circuit thereof;
Fig. 4 is the synoptic diagram of the driving method of known plasma scope;
Fig. 5 is the synoptic diagram of the driving method of plasma scope of the present invention; And
Fig. 6 is the synoptic diagram of the another kind of driving method of plasma scope of the present invention.
For reaching above-mentioned and other purpose, the present invention is divided into several (as: 2) zones with plasma scope, and repeats these regional scanning motions and keep action, the time of keeping action with increase, and then the brightness that improves plasma scope.
In the driving method of this plasma scope, plasma scope at first is divided into two or more zones.Then, reset, scan these zones more in regular turn, and, carry out the action of keeping in this arbitrary zone in the scanning motion end back in arbitrary zone, the scanning motion while in an inferior zone.In addition, the replacement in this arbitrary zone action then can not be with the scanning in other zones, keep action repeats, and disturbs to avoid the signal between zones of different.
With reference to Fig. 5, this is the synoptic diagram of the driving method of plasma scope of the present invention.In this embodiment, plasma scope is divided into two zones: upper-side area (Up-side) and underside area (Down-side).Upper-side area and underside area are then reset respectively, scanner uni is kept action to finish sub-field scan action.If the sharpness of plasma scope is 600 * 400 and has 256 kinds of color ranges (each complete frame display action needs 8 son display actions) that then upper-side area and underside area respectively have 300 display lines.The scanning motion time that each regional needed scanning motion time T SCN is 300 display lines, half of promptly whole plasma scope (600 display line) required scanning motion time.Therefore, if every display line needs the sweep time of 3us, then each zone only needs scanning motion time of 300 * 3=900us.In addition, the time T reset of replacement action then all equates any zone.
Then, illustrate that the driving method of plasma scope of the present invention is as follows.
At first, carry out the replacement action and the scanning motion of upper-side area.Subsequently, carry out the replacement action and the scanning motion of underside area.After the replacement action and scanning motion end of upper-side area, for the replacement action of keeping action and underside area of avoiding upper-side area interferes with each other, upper-side area must directly not kept action, but idle (Idle) a period of time carries out simultaneously with the replacement action of avoiding underside area and with the scanning motion of underside area.Similarly, instantly after the replacement action in territory, lateral areas and scanning motion finish, for the replacement action of keeping action and upper-side area of avoiding underside area interferes with each other, underside area is not directly kept action yet, but idle (Idle) a period of time carries out simultaneously with the replacement action of avoiding upper-side area and with the scanning motion of upper-side area.
Therefore, the action of keeping of upper-side area and underside area does not need the extra time, and can carry out simultaneously with the scanning motion of underside area and upper-side area.With existing 256 look grey-tone image data (each frame display action needs 8 son display actions to finish), each son display action keep actuation time (the about 600us of elder) all less than 900us (the scanning motion time of upper-side area and underside area), so this method can effectively increase and keeps actuation time near the time span of scanning motion.So when sharpness improved, the plasma scope of using driving method of the present invention more can not cause the problem of luminance shortage because of the deficiency of holding time.
In this embodiment, the length of holding time of 8 son display actions can be as known technology, remained on 1: 2: 4: 8: 16: 32: 64: 128 ratio, the maximum duration TSUS1 that keeps action shown in Figure 5 then is 600us, and surplus is that 300us, TSUS3 are 150us etc. for TSUS2 by that analogy.
In addition, different with known technology is, in the driving method of plasma scope of the present invention, the upper-side area of plasma scope and underside area need not waited until just can carry out the ensuing action (promptly showing plasma scope) of keeping after the scanning motion (needing 1800us) of plasma scope is all finished, keep action but can carry out it after the scanning motion (only needing 900us) of upper-side area and underside area is finished.Certainly, for the replacement action of avoiding each zone to other regional scanning motions and keep action and cause interference, when the replacement action of upper-side area or underside area was carried out, other regional everythings all must temporarily stop.Therefore, upper-side area and underside area keeps action and can just hocket once every the sweep time of about 300 display lines.
With reference to Fig. 6, this is the synoptic diagram of the driving method of plasma scope of the present invention.In this embodiment, if the sharpness of plasma scope is 600 * 400 and has 256 kinds of color ranges (each complete frame display action needs 8 son display actions) that plasma scope can be divided into three zones: the first area is preceding 200 sweep trace L
1～L
200Second area is middle 200 sweep trace L
201～L
400The 3rd zone then is back 200 sweep trace L
401～L
600Reset respectively in three zones, scanner uni is kept action to finish sub-field scan action.Each regional needed scanning motion time T
SCNBe the scanning motion time of 200 display lines, that is, and 1/3rd of whole plasma scope (600 display line) the required scanning motion time.Therefore, if every display line needs the sweep time of 3us, then each zone only needs scanning motion time of 200 * 3=600us.In addition, the time T of resetting and moving
ResetAny zone is then equated.
Then, illustrate that the driving method of plasma scope of the present invention is as follows.
At first, carry out the replacement action and the scanning motion of first area.Subsequently, carry out the replacement action and the scanning motion of second area.After the replacement action and scanning motion end of first area, for the replacement action of keeping action and second area of avoiding the first area interferes with each other, action must directly not kept in the first area, but idle (Idle) a period of time carries out simultaneously with the replacement action of avoiding second area and with the scanning motion of second area.Similarly, after the replacement action and scanning motion end of second area, for the replacement action of keeping action and the 3rd zone of avoiding second area interferes with each other, second area is not directly kept action yet, but idle (Idle) a period of time carries out simultaneously with the replacement action of avoiding the 3rd zone and with the scanning motion in the 3rd zone.And after the replacement action and scanning motion end in the 3rd zone, for the replacement action of keeping first area in action and next height field display action of avoiding the 3rd zone interferes with each other, action is not directly kept in the 3rd zone yet, but idle (Idle) a period of time carries out simultaneously with the replacement action of avoiding the first area and with the scanning motion of first area.
Therefore, trizonally keep action and do not need the extra time, and carry out simultaneously with the scanning motion in an inferior zone.
According to above-mentioned driving method, the actuation step of plasma scope comprises: (a) at first, plasma scope is divided into first area and second area; (b) replacement of carrying out the first area is moved; (c) then, the scanning motion that carries out the first area also carries out the action of keeping of second area simultaneously; (d) then, carry out the replacement action of second area; (e) scanning motion that carries out second area also carries out the action of keeping of first area simultaneously.Then, repeating step (b) to (e) for several times, to finish a complete frame display action.
Certainly, in this method, plasma scope also can be divided into three or more zones to be suitable for various application.
In sum, the present invention is divided into two zones with plasma scope, and the scanning motion that repeats these two zones with keep action, keep the time scale of action and then the brightness that improves plasma scope with increase.In addition, when action is reset in arbitrary zone, suspend the scanning motion of other actions and keep action, disturb to avoid the signal between zones of different.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; can do a little change and retouching, so protection scope of the present invention should be as the criterion with the scope that claims were defined.
Claims (10)
1. a plasma display is reset, scans, kept to the driving method of a plasma scope repeatedly to finish a frame display action, and described method comprises:
This plasma display is divided into a plurality of zones; And
Reset, scan those zones in regular turn, and the scanning motion in arbitrary zone finishes the scanning motion while in a back and a time zone, carry out the action of keeping in this arbitrary zone, the replacement in this arbitrary zone action is disturbed to avoid signal therebetween then not with other regional scanning motions and keep action and repeat.
2. the driving method of plasma scope according to claim 1, wherein, this plasma display is divided into a first area and a second area.
3. as the driving method of plasma scope as described in the claim 2, wherein, the action of keeping of this first area is that scanning motion at this second area carries out simultaneously, and the action of keeping of this second area is then carried out simultaneously at the scanning motion of this first area.
4. as the driving method of plasma scope as described in the claim 2, wherein, the replacement of this first area action is to carry out after the scanning motion of this second area finishes, and not with the scanning motion of this second area and keep action and repeat.
5. as the driving method of plasma scope as described in the claim 2, wherein, the replacement of this second area action is to carry out after the scanning motion of this first area finishes, and not with the scanning motion of this first area and keep action and repeat.
6. the driving method of a plasma scope comprises:
A) this plasma display is divided into a first area and a second area;
B) this first area of resetting;
C) scan this first area and keep this second area simultaneously;
D) this second area of resetting;
E) keep this first area and scan this second area simultaneously; And
F) repeat b) to e) step is repeatedly to finish a frame display action.
7. as the driving method of plasma scope as described in the claim 6, wherein, when the replacement of this first area action was carried out, this second area was to be in idle state.
8. as the driving method of plasma scope as described in the claim 6, wherein, when the replacement of this second area action was carried out, this first area was to be in idle state.
9. as the driving method of plasma scope as described in the claim 6, wherein, this first area is the upper-side area of this plasma display, and this second area then is the underside area of this plasma display.
10. as the driving method of plasma scope as described in the claim 6, wherein, should (f) step be that repetition eight times is to finish the GTG frame display action of one 256 looks.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991177266A CN1137462C (en) | 1999-08-12 | 1999-08-12 | Driving method of plasma display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991177266A CN1137462C (en) | 1999-08-12 | 1999-08-12 | Driving method of plasma display |
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| CN1284703A true CN1284703A (en) | 2001-02-21 |
| CN1137462C CN1137462C (en) | 2004-02-04 |
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| CNB991177266A Expired - Fee Related CN1137462C (en) | 1999-08-12 | 1999-08-12 | Driving method of plasma display |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407261C (en) * | 2003-11-08 | 2008-07-30 | Lg电子株式会社 | Plasma display panel driving method |
| CN100545891C (en) * | 2001-03-06 | 2009-09-30 | 友达光电股份有限公司 | Graphical presentation system |
-
1999
- 1999-08-12 CN CNB991177266A patent/CN1137462C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100545891C (en) * | 2001-03-06 | 2009-09-30 | 友达光电股份有限公司 | Graphical presentation system |
| CN101620847B (en) * | 2001-03-06 | 2011-03-30 | 友达光电股份有限公司 | Image display system |
| CN100407261C (en) * | 2003-11-08 | 2008-07-30 | Lg电子株式会社 | Plasma display panel driving method |
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| CN1137462C (en) | 2004-02-04 |
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Owner name: YOUDA PHOTOELECTRIC CO., LTD. Free format text: FORMER OWNER: DAQI TECHNOLOGY CO., LTD. Effective date: 20030418 |
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