CN100395798C - Method and device for driving plasma display device - Google Patents
Method and device for driving plasma display device Download PDFInfo
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- CN100395798C CN100395798C CNB2004100542641A CN200410054264A CN100395798C CN 100395798 C CN100395798 C CN 100395798C CN B2004100542641 A CNB2004100542641 A CN B2004100542641A CN 200410054264 A CN200410054264 A CN 200410054264A CN 100395798 C CN100395798 C CN 100395798C
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Abstract
The present invention relates to a driving method and a driving device for a plasma display. The driving method for a plasma display comprises the following steps: the step one is to sense the ambient temperature of a plasma display; the step two is to initialize discharging units, and adjust the resetting period based on the sensed temperature. Based on the ambient temperature, the present invention adjusts the resetting period, especially adjusts the downward moving period of eliminating wall electric charges, adjusts the downward moving voltage value, and adjusts the discharging condition including the discharging wall electric charges. Without the influence of the ambient temperature, the driving method of the present invention can obtain certain operating characteristic through setting up an identical condition including the discharging condition of wall electric charges.
Description
(1) technical field
The invention relates to variation, adjust reseting period, a kind of plasma display dirving method and the device that can have certain acting characteristic according to environment temperature.
(2) background technology
Recently, people give very big concern to the panel display apparatus of the continuous miniaturization of weight and volume.These panel display apparatus comprise liquid crystal indicator (Liquid Crystal Display), plasma display (Plasma Display Panel:PDP), field emission display device (Field Emission Display), luminous electro (Elect ro-luminescence) etc.
In these flat display apparatus, the ultraviolet ray of the 147nm that plasma display produces during according to He+Xe Ne+Xe and He+Ne+Xe noble gas discharge, excited fluophor is luminous, can demonstrate the picture and the dynamic image that comprise writings and image etc.This plasma display is not only realized miniaturization gradually, filming, and, recently, continually developing research to seek more outstanding image quality.
Especially, what deserves to be mentioned is, during the discharge of 3 electrode AC creeping discharge type plasma displays; utilize insulator layer, accumulation wall electric charge reduces the needed voltage of discharge; guard electrode is avoided the influence of plasma sputtering, and it has, and driving voltage hangs down and the advantage of long service life.
Fig. 1 is the oblique view of the discharge cell structure of 3 electrode AC creeping discharge type plasma displays.
As shown in Figure 1, the discharge cell of 3 electrode AC creeping discharge type plasma displays is by at the scan electrode that forms on the upper substrate 10 (Y) and keep electrode (Z) and the address electrode (X) that forms constitutes on lower basal plate 18.
Scan electrode (Y) and keep electrode (Z) comprise respectively transparency electrode (12Y, 12Z); Than transparency electrode (12Y 12Z) has littler wire spoke, the metal bus electrode that on transparency electrode one lateral edges, forms (13Y, 13Z).(12Y 12Z) generally uses indium tin oxide (Indium-Tin-Oxide:ITO) material to form to transparency electrode.(13Y 13Z) generally adopts chromium metal materials such as (Cr) to metal bus (bus) electrode.(13Y 13Z) has effective minimizing transparency electrode (12Y, the effect of the forceful electric power that 12Z) produces resistance to this metal bus (bus) electrode.Forming scan electrode (Y) and keeping on the upper substrate 10 of electrode (Z), have top insulator layer 14 and diaphragm 16.In top insulator layer 14, ionized gas (plasma) charge particle that produces during the accumulation gas discharge.The charge particle sputter that diaphragm 16 produces when preventing gas discharge influences top insulator layer 14, improves the emission efficiency of 2 electronics.Diaphragm 16 adopts magnesium oxide (MgO) material usually.Address electrode (X) is towards scan electrode (Y) and keep the direction formation that electrode (Z) intersects.On the lower basal plate 18 of calculated address electrode (X), have lower isolator layer 22 and partition wall 24.
On the surface of lower isolator layer 22 and partition wall 24, form luminescent coating 26.Partition wall 24 forms side by side with address electrode (X), physically makes a distinction with discharge cell, and ultraviolet ray and the visible light that generates that prevent to discharge piled up in contiguous discharge cell.The luminescence-utraviolet that luminescent coating 26 produces during according to gas discharge produces any one visible light in red (R) green (G) and the blueness (B).In the discharge space between last/lower basal plate (10,18) and the partition wall 24, the He+Xe that injection can be discharged, inert mixed gas such as Ne+Xe and He+Ne+Xe.
What Fig. 2 showed is the formation synoptic diagram of a frame of plasma display.
As shown in Figure 2, the grey level (Gray Level) of this 3 electrode AC creeping discharge type plasma displays in order to realize picture is divided into the luminous time different a plurality of subdomains of number with a frame and drives.Each subdomain is divided into the reseting period of homogeneous discharge once more; Select during the address of discharge cell; According to the number that discharges back, realize during the keeping of gray scale.When utilizing 265 gray scale display frames, in 1/60 second, 8 subdomains (SF1 is to SF8) will be divided into relevant image duration (16.67ms).8 subdomains (SF1 is to SF8) are divided into reseting period respectively once more, during the address and during keeping.During the reseting period of each subdomain and the address respectively at the same demifacet of each subdomain, during keeping and discharge back several in each subdomain, according to the ratio increase of 2n (but, n=0,1,2,3,4,5,6,7).Combination by different subdomains during keeping realizes gray scale.
Fig. 3 is the drive waveforms figure of the plasma display of existing low voltage drive.
Plasma display drives according to drive waveforms as shown in Figure 3.At reseting period, to scan electrode (Y) provide have move up (Set-Up) during and move down (Set-Down) during tilt waveform, realize the discharge cell initialization by reset discharge.
During the address, carry out the address discharge by the scanning impulse of the wall electric charge that in reseting period, forms and scan electrode and the data pulse of address electrode, select discharge cell.
During keeping, the discharge cell of selecting in during the address is kept discharge according to the pulse of keeping of keeping electrode.
The plasma display of Qu Donging is owing to the variation according to environment temperature in this manner, the discharging condition that comprises the discharge gas characteristic and the wall quantity of electric charge is inequality, drive characteristic changes, and it exists owing to the environment temperature difference, the inconsistent problem of acting characteristic.
Recently, the evaluation criterion of plasma display driveability has increased the important point, that see exactly its whether according to around the drive environment variation of temperature, characteristic changes.
Although plasma display carries out same action in 60 ℃ of-20 ℃ scopes of temperature around, because plasma display has the variation along with environment temperature, the characteristic that discharging condition also changes.So, just acting characteristic under high temperature and the low-temperature condition and the inconsistent problem of acting characteristic under the normal temperature state have appearred.Therefore, be sought after a kind of perception environment temperature now,, carry out the driving method and the device of different driving according to condition of different temperatures.
(3) summary of the invention
To the objective of the invention is in order addressing the above problem, to provide a kind of difference to adjust reseting period, make its plasma display dirving method with certain acting characteristic and device according to environment temperature.
To achieve these goals, plasma display dirving method of the present invention comprises following step: the step of perception plasma display environment temperature; According to the temperature of above-mentioned steps perception,, adjust the step of the length of reseting period with the discharge cell initialization.
Above-mentioned reseting period comprises following a few part: during move up (Set-Up) of front illumination discharge; What the wall quantity of electric charge that forms discharging by the illumination of above-mentioned front was adjusted moves down during (Set-Down).
The step of above-mentioned adjustment reseting period should may further comprise the steps: according to the temperature of said sensed, change the step of the length during above-mentioned the moving down.
Plasma display dirving method of the present invention is appended and be may further comprise the steps: according to the length during above-mentioned the moving down, to moving down the step that magnitude of voltage is adjusted.
Step is further comprising the steps of during changing above-mentioned moving down: when the temperature of perception is higher than normal temperature, will be adjusted to during moving down than shorter step during the moving down under the normal temperature.
Step is further comprising the steps of during changing above-mentioned moving down: when the temperature of perception is lower than normal temperature, will be adjusted to during moving down than shorter step during the moving down under the normal temperature.
Step is further comprising the steps of during changing above-mentioned moving down: when the temperature of perception is higher than the mxm. of plasma display actuation temperature, will be adjusted into the step of short value during moving down.
Step is further comprising the steps of during changing above-mentioned moving down: when the temperature of perception is lower than the minimum of plasma display actuation temperature, will be adjusted into the step of short value during moving down.
Step is further comprising the steps of during changing above-mentioned moving down: when the temperature of perception by than the high temperature of normal temperature when normal temperature changes, increase the step of adjustment during moving down normal temperature under during will moving down.
Step is further comprising the steps of during changing above-mentioned moving down: when the temperature of perception by than the low temperature of normal temperature when normal temperature changes, increase the step of adjustment during moving down normal temperature under during will moving down.
The drive unit of plasma display of the present invention is made of following several parts: the temperature induction part of perception plasma display environment temperature; According to the temperature of temperature induction part perception, the timing controller of the control signal that generation plasma display reseting period is controlled; Corresponding with above-mentioned control signal, the reset signal of reseting period adjustment is presented at the display drive division of plasma display.
The aforementioned display device drive division also comprises following structure: at reseting period, provide the scanning that moves up and move down waveform/keep drive division to scan electrode.
The feature of above-mentioned scanning/keep drive division is: under the control of timing controller, provide have move up during and move down during reset wave.
The feature of above-mentioned timing controller is: according to the temperature of temperature induction part perception, produce the control signal of adjusting during moving down.
The feature of above-mentioned timing controller is: when the temperature of temperature induction part perception is higher than normal temperature, be adjusted to during generation will move down than little control signal during the moving down under the normal temperature.
The feature of above-mentioned timing controller is: when the temperature of temperature induction part perception is lower than normal temperature, be adjusted to during generation will move down than little control signal during the moving down under the normal temperature.
The feature of above-mentioned timing controller is: when the temperature of temperature induction part perception is higher than the maximal value of plasma display actuation temperature, be adjusted to the control signal of minimum value during generation will move down.
The feature of above-mentioned timing controller is: when the temperature of temperature induction part perception is lower than the minimum of plasma display actuation temperature, be adjusted to the control signal of minimum value during generation will move down.
The feature of above-mentioned timing controller is: when the temperature of temperature induction part perception by than the high temperature of normal temperature when normal temperature reduces, increase the control signal of adjustment during moving down normal temperature under during generation will move down.
The feature of above-mentioned timing controller is: when the temperature of temperature induction part perception by than the low temperature of normal temperature when normal temperature raises, increase the control signal of adjustment during moving down normal temperature under during generation will move down.
Effect of the present invention:
Different temperatures around plasma display dirving method of the present invention and the device basis, adjust reseting period, especially adjust moving down during (Set-Down) of elimination wall electric charge, adjust and move down magnitude of voltage, adjustment comprises the discharging condition of the wall quantity of electric charge according to environment temperature.
Plasma display dirving method of the present invention and device are not subjected to external temperature influence, are set to identical conditions by the discharging condition that comprises the wall quantity of electric charge, can obtain certain acting characteristic.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the oblique view of the discharge cell structure of existing 3 electrode AC creeping discharge type plasma displays.
Fig. 2 is the formation synoptic diagram of a frame of plasma display.
Fig. 3 is the drive waveforms figure according to existing low voltage drive plasma display.
Fig. 4 is the drive waveforms figure of plasma display of the present invention.
Fig. 5 is the formation block scheme of plasma display apparatus of the present invention.
The symbol description of major part in the accompanying drawing:
10: upper substrate 18: lower basal plate
Y: scan electrode Z: keep electrode
X: address electrode 12Y, 12Z: transparency electrode
13Y, 13Z: metal bus (bus) electrode 14: top insulator layer
16: diaphragm 22: the lower isolator layer
24: partition wall 26: luminescent coating
51: scan/keep drive division 53: keep drive division jointly
55: data-driven portion 57: timing controller
59: temperature induction part
(5) embodiment
Below, with reference to accompanying drawing 4 and Fig. 5, to the variation according to environment temperature, the change reseting period guarantees that the plasma display dirving method and the device of certain acting characteristic of plasma display is elaborated.
Fig. 4 has shown the drive waveforms of plasma display of the present invention, especially, shown in a subdomain, and during reseting period and address, the synoptic diagram of the drive waveforms that provides to scan electrode (Y).
As shown in Figure 4, in reseting period, have during the moving up of front illumination discharge and to the wall quantity of electric charge that forms by front illumination discharge adjust move down during tilt waveform, by reset discharge, realize the discharge cell initialization.
At reseting period, provide to scan electrode (Y) to move up waveform and to move down waveform.According to the waveform that moves up, produce front illumination discharge, in discharge cell, form many wall electric charges.Then, according to moving down waveform, produce and eliminate discharge, the wall quantity of electric charge is adjusted into can not be to the degree of next address discharge.
According to the variation of environment temperature, during adjustment moves down, make the discharging condition that comprises the wall quantity of electric charge identical.
When the environment temperature of plasma display is normal temperature, be set at T1 during will moving down, if the environment temperature of plasma display is higher or lower than normal temperature than normal temperature, will be littler during moving down than T1.
Specifically, when the environment temperature of plasma display is normal temperature,, be set at T1 during will moving down, will move down the voltage of signals value and be reduced to the A point, adjust the wall electric charge according to moving down control signal.For example, the value that the Vy that provides to scanning impulse is identical is provided with during the address magnitude of voltage that A is ordered.
On the other hand, when the environment temperature of plasma display is higher or lower than normal temperature than normal temperature,, be set at T2 during will moving down, will move down the voltage of signals value and be reduced to the B point, adjust the wall quantity of electric charge according to moving down control signal.At this moment, move down the voltage of signals value and be reduced to the B point always, the little V1 voltage of absolute value of permission magnitude of voltage ratio-Vy magnitude of voltage is adjusted the wall quantity of electric charge, keeps certain discharging condition.
And, when the environment temperature of plasma display is higher than the maximal value of actuation temperature or is lower than minimum, be set at the minimum T3 that moves down during the signal during the signal with moving down, move down the voltage of signals value and drop to the C point, adjust the wall quantity of electric charge.At this moment, move down the voltage of signals value and be reduced to the C point, the little V2 voltage of absolute value of permission magnitude of voltage ratio-Vy magnitude of voltage is adjusted the wall quantity of electric charge, keeps certain discharging condition.
When the environment temperature of plasma display is the maximal value of actuation temperature or minimum,, can change from the maximum of T 1 of the minimum T3 during the signal during signal during moving down signal if temperature is changed to normal temperature.If change to T1 by T3 during moving down signal, so, move down the voltage of signals value and change to the A point by the C point, by adjusting the wall quantity of electric charge, keep certain discharging condition.
As a same reason, according to the environment temperature of plasma display, adjust during the moving down of reseting period, control moves down the magnitude of voltage of waveform, adjusts the wall quantity of electric charge, keeps certain discharging condition.
Fig. 5 is the formation block scheme of plasma display apparatus of the present invention.
As shown in Figure 5, plasma display device driver of the present invention is made of following several parts: the data-driven portion 55 that drives address electrode (X); The scanning of driven sweep electrode (Y)/keep drive division 51; What electrode (Z) was kept in driving keeps drive division 53 jointly; To above-mentioned scanning/keep drive division 51, keep the timing controller 57 that the driving timing of drive division 53, data-driven portion 55 is controlled jointly; The perception environment temperature provides the temperature induction part 59 of temperature perceptual signal to timing controller 57.
Data-driven portion 55 also comprises with a plurality of particular address electrodes (X) and being connected, and provides a plurality of data driver IC (not indicating among the figure) of data to relative address electrode (X).
Scan/keep drive division 51 and be connected, provide reset pulse to scan electrode (Y) simultaneously with scan electrode (Y).And when scanning/keeping drive division 51 scanning impulse during the address is offered scan electrode (Y) successively, the pulse of keeping in will be during keeping offers scan electrode (Y).
Keep drive division 53 jointly and connect and keep electrode (Z), provide and keep pulse to keeping electrode (Z).
Timing controller 57 provides vertically/and (H V), generates timing controling signal to parallel synchronizing signal, according to the driver IC kind, offers data-driven portion 55 and scans/keep drive division 51 and keep drive division 53 jointly, the driving timing of control plasma display.
And timing controller 57 produces and moves down control signal according to the temperature perceptual signal of temperature induction part 59.
Therefore, scan/keep drive division 51 and to move down control signal corresponding, produce the signal that moves down of reseting period.As above review state like that, during the moving down of control reseting period.
The ambient temperature signal of input plasma display according to the driver IC kind, provides timing controling signal to scanning/keep drive division 51, during the Set-Down of the reseting period of control plasma display.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (20)
1. plasma display dirving method is characterized in that comprising following step:
The step of perception plasma display environment temperature;
According to the temperature of perception in above-mentioned steps,, adjust the step of the length of reseting period with the discharge cell initialization.
2. plasma display dirving method as claimed in claim 1 is characterized in that described reseting period comprises following a few part:
Throw light on during the moving up of discharge in the front;
To the wall quantity of electric charge that forms by the illumination discharge of described front adjust move down during.
3. plasma display dirving method as claimed in claim 2 is characterized in that described adjustment reseting period may further comprise the steps:
According to the temperature of described perception, change the step of the length during described the moving down.
4. plasma display dirving method as claimed in claim 3 is characterized in that further comprising the steps of:
According to the length during described the moving down, to moving down the step that magnitude of voltage is adjusted.
5. plasma display dirving method as claimed in claim 3, the step that it is characterized in that changing during described the moving down is further comprising the steps of:
When the temperature of perception is higher than normal temperature, will be adjusted to during moving down than shorter step during the moving down under the normal temperature.
6. plasma display dirving method as claimed in claim 3, the step that it is characterized in that changing during described the moving down is further comprising the steps of:
When the temperature of perception is lower than normal temperature, will be adjusted to during described the moving down than shorter step during the moving down under the normal temperature.
7. plasma display dirving method as claimed in claim 3, the step that it is characterized in that changing during described the moving down is further comprising the steps of:
When the temperature of perception is higher than the mxm. of plasma display actuation temperature, the step of short value will be adjusted into during described the moving down.
8. plasma display dirving method as claimed in claim 3, the step that it is characterized in that changing during described the moving down is further comprising the steps of:
When the temperature of perception is lower than the minimum of plasma display actuation temperature, the step of short value will be adjusted into during described the moving down.
9. plasma display dirving method as claimed in claim 3, the step that it is characterized in that changing during described the moving down is further comprising the steps of:
When the temperature of perception by than the high temperature of normal temperature when normal temperature changes, will increase the step of adjustment during moving down normal temperature under during described the moving down.
10. plasma display dirving method as claimed in claim 3, the step that it is characterized in that changing during described the moving down is further comprising the steps of:
When the temperature of perception by than the low temperature of normal temperature when normal temperature changes, increase the step of adjustment during moving down normal temperature under during will moving down.
11. the drive unit of a plasma display is characterized in that being made of following several parts:
The temperature induction part of perception plasma display environment temperature;
According to the temperature of described temperature induction part perception, produce the timing controller of the control signal of control plasma display reseting period;
Corresponding with described control signal, the reset signal of reseting period adjustment is presented at the display drive division of plasma display.
12. the drive unit of plasma display as claimed in claim 11 is characterized in that:
Described display drive division also is included on the scan electrode, and the scanning that moves up in the reseting period and move down waveform/keep drive division is provided.
13. the drive unit of plasma display as claimed in claim 12 is characterized in that:
Described scanning/keep drive division under the control of timing controller, provide have move up during and move down during reset wave.
14. the drive unit of plasma display as claimed in claim 11 is characterized in that:
Described timing controller produces the control signal of adjusting during moving down according to the temperature of temperature induction part perception.
15. the drive unit of plasma display as claimed in claim 14 is characterized in that:
Described timing controller will be adjusted to during generation will move down than little control signal during the moving down under the normal temperature when the temperature of temperature induction part perception is higher than normal temperature.
16. the drive unit of plasma display as claimed in claim 14 is characterized in that:
Described timing controller will be adjusted to during generation will move down than little control signal during the moving down under the normal temperature when the temperature of temperature induction part perception is lower than normal temperature.
17. the drive unit of plasma display as claimed in claim 14 is characterized in that:
When described timing controller is higher than the maximal value of plasma display actuation temperature when the temperature of described temperature induction part perception, during will moving down, generation is adjusted to the control signal of minimum value.
18. the drive unit of plasma display as claimed in claim 14 is characterized in that:
When described timing controller is lower than the minimum of the temperature that plasma display drives when the temperature of described temperature induction part perception, during will moving down, generation is adjusted to the control signal of minimum value.
19. the drive unit of plasma display as claimed in claim 14 is characterized in that:
When described timing controller is lowered into normal temperature in the temperature of described temperature induction part perception by the temperature higher than normal temperature, during will moving down, generation increases the control signal of adjustment during moving down normal temperature under.
20. the drive unit of plasma display as claimed in claim 14 is characterized in that the feature of described timing controller is:
When with the temperature of described temperature induction part perception by than the low temperature of normal temperature when normal temperature raises, increase the control signal of adjustment during moving down normal temperature under during generation will move down.
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| CNB2004100542641A CN100395798C (en) | 2004-09-03 | 2004-09-03 | Method and device for driving plasma display device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414535A (en) * | 2001-10-25 | 2003-04-30 | Lg电子株式会社 | Device and method for driving plasma display panel |
| EP1387344A2 (en) * | 2002-08-01 | 2004-02-04 | Lg Electronics Inc. | Method and apparatus for driving plasma display panel |
| EP1388841A2 (en) * | 2002-08-06 | 2004-02-11 | Lg Electronics Inc. | Method and apparatus for driving a plasma display panel at low temperature |
| CN1495691A (en) * | 2002-09-12 | 2004-05-12 | Lg������ʽ���� | Method and equipment for driving plasma display panel |
| US20040104869A1 (en) * | 2002-11-28 | 2004-06-03 | Samsung Sdi Co., Ltd. | Driving device and method for plasma display panel |
| JP2004226792A (en) * | 2003-01-24 | 2004-08-12 | Matsushita Electric Ind Co Ltd | Driving method of plasma display panel |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414535A (en) * | 2001-10-25 | 2003-04-30 | Lg电子株式会社 | Device and method for driving plasma display panel |
| EP1387344A2 (en) * | 2002-08-01 | 2004-02-04 | Lg Electronics Inc. | Method and apparatus for driving plasma display panel |
| EP1388841A2 (en) * | 2002-08-06 | 2004-02-11 | Lg Electronics Inc. | Method and apparatus for driving a plasma display panel at low temperature |
| CN1495691A (en) * | 2002-09-12 | 2004-05-12 | Lg������ʽ���� | Method and equipment for driving plasma display panel |
| US20040104869A1 (en) * | 2002-11-28 | 2004-06-03 | Samsung Sdi Co., Ltd. | Driving device and method for plasma display panel |
| JP2004226792A (en) * | 2003-01-24 | 2004-08-12 | Matsushita Electric Ind Co Ltd | Driving method of plasma display panel |
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