JPH0830228A - Method of driving gas discharge type display device - Google Patents
Method of driving gas discharge type display deviceInfo
- Publication number
- JPH0830228A JPH0830228A JP6163850A JP16385094A JPH0830228A JP H0830228 A JPH0830228 A JP H0830228A JP 6163850 A JP6163850 A JP 6163850A JP 16385094 A JP16385094 A JP 16385094A JP H0830228 A JPH0830228 A JP H0830228A
- Authority
- JP
- Japan
- Prior art keywords
- electrode group
- amplitude
- pulse
- display device
- erase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は例えばテレビおよび広
告表示盤等の画像表示に用いる気体放電型表示装置の駆
動方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for driving a gas discharge type display device used for displaying images, such as a television and an advertisement display board.
【０００２】[0002]
【従来の技術】気体放電型表示装置、いわゆる、ＡＣ型
プラズマディスプレイパネル（以下、パネルと略す）の
一種として、特開昭６１−３９３４１号公報に開示され
ている面放電型パネルが知られている。このようなパネ
ルの駆動における消去パルスの印加方法には、例えば特
公昭６２−６１２７８号公報にガス放電パネルの駆動方
法として提案されている方法がある。2. Description of the Related Art As a kind of gas discharge type display device, so-called AC type plasma display panel (hereinafter abbreviated as a panel), a surface discharge type panel disclosed in JP-A-61-39341 is known. There is. As a method of applying an erase pulse in driving such a panel, for example, there is a method proposed in Japanese Patent Publication No. 62-61278 as a method of driving a gas discharge panel.
【０００３】以下、図面を参照しながら従来のこの種の
気体放電型表示装置について説明するとともに、気体放
電型表示装置の従来の駆動方法の一例について説明す
る。図５（ａ），（ｂ）は従来の気体放電型表示装置の
一例の一部平面図およびそのＢ−Ｂ’断面図を示すもの
であり、図６はその電極配列図を示すものである。図５
において、一対のガラス基板１，８が放電空間６を挟ん
で対向しており、一方のガラス基板１上には、走査電極
２群と維持電極３群が平行して設けられ、これらの走査
電極２群と維持電極３群は誘電体層４と保護膜層５で覆
われている。そして、放電空間６を挟んで対向する他方
のガラス基板８上には、データ電極７群が走査電極２群
と維持電極３群とに直交対向して設けられている。A conventional gas discharge display device of this type will be described below with reference to the drawings, and an example of a conventional driving method of the gas discharge display device will be described. 5 (a) and 5 (b) are a partial plan view and an BB 'sectional view of an example of a conventional gas discharge display device, and FIG. 6 is an electrode array diagram thereof. . Figure 5
In, a pair of glass substrates 1 and 8 are opposed to each other with a discharge space 6 in between, and a group of scan electrodes 2 and a group of sustain electrodes 3 are provided in parallel on one glass substrate 1. The second group and the sustain electrode group 3 are covered with a dielectric layer 4 and a protective film layer 5. Then, on the other glass substrate 8 facing each other with the discharge space 6 interposed therebetween, the data electrode group 7 is provided orthogonally opposite to the scan electrode group 2 and the sustain electrode group 3.
【０００４】これらの走査電極２群，維持電極３群，デ
ータ電極７群は、図６に示すように、列方向にＤＡＴＡ
1 〜ＤＡＴＡM のＭ列のデータ電極が配列されるととも
に、行方向にＳＣＮ1 〜ＳＣＮN のＮ行の走査電極およ
びＳＵＳ1 〜ＳＵＳN のＮ行の維持電極がそれぞれ配列
されて、マトリクスを構成している。つぎに、このよう
に構成された気体放電型表示装置の従来の駆動方法につ
いて説明する。As shown in FIG. 6, the scan electrode group 2, the sustain electrode group 3, and the data electrode group 7 are arranged in DATA in the column direction.
With M column data electrodes of 1 to Data M is arranged, sustain electrodes of N rows of scanning electrodes and SUS 1 ~SUS N of N rows of SCN 1 ~SCN N in the row direction are arranged respectively, the matrix I am configuring. Next, a conventional driving method of the gas discharge type display device configured as described above will be described.
【０００５】図５において、所定のデータ電極７と走査
電極２に書き込みパルスと走査パルスがそれぞれ印加さ
れると、所定のデータ電極７と走査電極２の交点Ｗで放
電が起こり、この部分の保護膜層５表面に電荷が蓄積さ
れる。つぎに、走査電極２と維持電極３に交互に維持パ
ルスが印加されることにより、保護膜層５表面に蓄積さ
れた電荷により起動されてＳ部において放電が開始し、
その後Ｓ部の放電が継続する。そして、放電によってＳ
部の保護膜層５表面に蓄積された電荷を消滅させるよう
な放電（以下、消去放電という）を、走査電極２または
維持電極３に消去パルスを印加して起こすことで、これ
以降に走査電極２と維持電極３に交互に維持パルスが印
加されても放電が発生しなくなる。In FIG. 5, when a write pulse and a scan pulse are applied to a predetermined data electrode 7 and a scan electrode 2, respectively, a discharge occurs at an intersection W between the predetermined data electrode 7 and the scan electrode 2 to protect this portion. Electric charges are accumulated on the surface of the film layer 5. Next, by alternately applying sustain pulses to the scan electrodes 2 and the sustain electrodes 3, the sustain electrodes are activated by the charges accumulated on the surface of the protective film layer 5 to start discharging in the S portion,
After that, the discharge of the S portion continues. Then, by discharge, S
By causing an erase pulse to be applied to the scan electrode 2 or the sustain electrode 3 to cause a discharge (hereinafter, referred to as an erase discharge) that extinguishes the charge accumulated on the surface of the protective film layer 5 of a certain portion, the scan electrode is thereafter formed. Even if the sustain pulse is alternately applied to 2 and the sustain electrode 3, the discharge does not occur.
【０００６】図７は気体放電型表示装置の従来の駆動タ
イミングの一例を示すタイムチャートである。図７に示
す書き込み期間において、所定のデータ電極ＤＡＴＡ1
〜ＤＡＴＡM に振幅がＶｗである正の書き込みパルス、
第１番目の走査電極ＳＣＮ1に振幅がＶｓである負の走
査パルスが印加されると、前記所定のデータ電極ＤＡＴ
Ａ1 〜ＤＡＴＡM と第１番目の走査電極ＳＣＮ1 の交点
部の保護膜層表面に電荷が蓄積される。FIG. 7 is a time chart showing an example of conventional drive timing of a gas discharge type display device. In the writing period shown in FIG. 7, a predetermined data electrode DATA 1
~ Positive write pulse with amplitude Vw on DATA M ,
When a negative scan pulse having an amplitude of Vs is applied to the first scan electrode SCN 1 , the predetermined data electrode DAT
Electric charges are accumulated on the surface of the protective film layer at the intersection of A 1 to DATA M and the first scan electrode SCN 1 .
【０００７】つぎに、所定のデータ電極ＤＡＴＡ1 〜Ｄ
ＡＴＡM に振幅がＶｗである正の書き込みパルス、第２
番目の走査電極ＳＣＮ2 に振幅がＶｓである負の走査パ
ルスが印加されると、前記所定のデータ電極ＤＡＴＡ1
〜ＤＡＴＡM と第２番目の走査電極ＳＣＮ2 の交点部の
保護膜層表面に電荷が蓄積される。同様な動作が続いて
行われ、最後に所定のデータ電極ＤＡＴＡ1 〜ＤＡＴＡ
Mに振幅がＶｗである正の書き込みパルス、第Ｎ番目の
走査電極ＳＣＮN に振幅がＶｓである負の走査パルスが
印加されると、前記所定のデータ電極ＤＡＴＡ1 〜ＤＡ
ＴＡM と第Ｎ番目の走査電極ＳＣＮN の交点部の保護膜
層表面に電荷が蓄積される。Next, predetermined data electrodes DATA 1 to D
ATA M positive write pulse with amplitude Vw, second
When a negative scan pulse having an amplitude of Vs is applied to the th scan electrode SCN 2 , the predetermined data electrode DATA 1
Charges are accumulated on the surface of the protective film layer at the intersection of the ~ DATA M and the second scan electrode SCN 2 . The same operation is continuously performed, and finally, the predetermined data electrodes DATA 1 to DATA
When a positive write pulse having an amplitude of Vw is applied to M and a negative scan pulse having an amplitude of Vs is applied to the Nth scan electrode SCN N , the predetermined data electrodes DATA 1 to DA are applied.
Electric charges are accumulated on the surface of the protective film layer at the intersection of TA M and the Nth scan electrode SCN N.
【０００８】続く維持期間において、全ての維持電極Ｓ
ＵＳ1 〜ＳＵＳN と全ての走査電極ＳＣＮ1 〜ＳＣＮN
に交互に振幅がＶｓである負の維持パルスが印加される
と、前記蓄積された電荷により起動されて、その部分の
維持電極ＳＵＳ1 〜ＳＵＳNと走査電極ＳＣＮ1 〜ＳＣ
ＮN 間で維持放電を開始し、その後維持パルスの印加を
続けている間、維持放電が継続する。In the subsequent sustain period, all sustain electrodes S are
US 1 to SUS N and all scan electrodes SCN 1 to SCN N
When a negative sustain pulse having an amplitude of Vs is alternately applied to the electrodes, the sustain electrodes SUS 1 to SUS N and the scan electrodes SCN 1 to SC are activated by the accumulated charges.
The sustain discharge is started between N N and then the sustain discharge is continued while the application of the sustain pulse is continued.
【０００９】続く消去期間において、全ての維持電極Ｓ
ＵＳ1 〜ＳＵＳN に振幅がＶｅでパルス幅がｔWEである
負の消去パルスが加わると、消去放電が起こり、維持放
電によって保護膜層表面に蓄積された電荷が消滅して、
つぎに維持パルスが印加されても放電を継続しなくな
る。この消去期間における従来の消去パルスの印加方法
の一例としては、パルスの振幅Ｖｅを制御する電圧制御
消去法と、パルス幅ｔWEを狭くする細幅消去法とがあ
る。In the subsequent erase period, all sustain electrodes S are
When a negative erase pulse having an amplitude Ve and a pulse width t WE is applied to US 1 to SUS N , an erase discharge occurs, and the charge accumulated on the surface of the protective film layer by the sustain discharge disappears.
Then, even if a sustain pulse is applied, the discharge will not continue. As an example of a conventional erase pulse application method during this erase period, there are a voltage-controlled erase method for controlling the pulse amplitude Ve and a narrow width erase method for narrowing the pulse width t WE .
【００１０】消去動作マージンをより大きくするため
に、図７に示すように、これら両方を組み合わせた消去
パルスや、パルス幅の異なる複数の細幅消去パルスを印
加することがすでに行われている。なお、安定な書き込
み動作、維持動作および消去動作を行うために、以上の
説明にある書き込み、走査、維持、消去の各パルスにお
ける立ち上がりおよび立ち下がりは急峻で、その変化時
間は一般に数百ｎｓ程度のごく短いものに設定されてい
る。In order to increase the erase operation margin, as shown in FIG. 7, it has been already applied to apply an erase pulse that is a combination of both and a plurality of narrow erase pulses having different pulse widths. In order to perform a stable write operation, sustain operation, and erase operation, the rising and falling edges of the write, scan, sustain, and erase pulses described above are steep, and the change time is generally about several hundred ns. Is set to a very short one.
【００１１】[0011]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の気体放電型表示装置の駆動方法では、消去パ
ルスのパルス幅および振幅の許容変動範囲を大きくとる
ことができず、放電セルの特性にばらつきがあると、消
去動作において消去放電が過剰もしくは不十分な放電セ
ルが発生し、それらの放電セルでは保護膜層表面に蓄積
された電荷が完全に消滅しなくなるので、十分な消去動
作マージンが得られないという問題があった。なお、消
去放電が過剰というのは、保護膜層表面に蓄積された電
荷を消滅させた後さらに逆極性の電荷を蓄積することを
いい、消去放電が不十分というのは、保護膜層表面に蓄
積された電荷を零まで減少させることができないことを
いう。However, in such a conventional method of driving a gas discharge type display device, it is not possible to set a large allowable variation range of the pulse width and the amplitude of the erase pulse, and the discharge cell characteristics are changed. If there are variations, discharge cells with excessive or insufficient erase discharge are generated in the erase operation, and the charges accumulated on the surface of the protective film layer are not completely extinguished in those discharge cells, so that a sufficient erase operation margin is provided. There was a problem that I could not get it. Excessive erasing discharge means that the electric charge accumulated on the surface of the protective film layer is extinguished, and then electric charges of opposite polarity are further accumulated. It means that the accumulated charge cannot be reduced to zero.
【００１２】この発明の目的は、消去パルスのパルス幅
および振幅の許容変動範囲を大きくとることができ、放
電セルの特性にばらつきがあっても十分な消去動作マー
ジンが得られる気体放電型表示装置の駆動方法を提供す
ることを目的とする。An object of the present invention is to provide a wide range of permissible fluctuations in the pulse width and amplitude of the erase pulse, and to obtain a sufficient erase operation margin even if there are variations in the characteristics of the discharge cells. It is an object of the present invention to provide a driving method of the.
【００１３】[0013]
【課題を解決するための手段】請求項１記載の気体放電
型表示装置の駆動方法は、放電空間を挟んで対向する一
対の絶縁基板のうち、一方の絶縁基板上に誘電体層で覆
われた対となる走査電極群と維持電極群を互いに平行し
て配列し、他方の絶縁基板上に走査電極群と維持電極群
とに直交対向してデータ電極群を配列してなる気体放電
型表示装置を駆動する際に、走査電極群および維持電極
群の一方に緩勾配で瞬時値が増加または減少する消去パ
ルスを印加して、走査電極群および維持電極群間の電位
差を緩やかに増加させることにより消去動作を行う。According to another aspect of the present invention, there is provided a method of driving a gas discharge display device, wherein one of a pair of insulating substrates facing each other with a discharge space interposed therebetween is covered with a dielectric layer. Gas discharge display in which a pair of scan electrode group and sustain electrode group are arranged in parallel with each other, and a data electrode group is arranged on the other insulating substrate so as to be orthogonally opposed to the scan electrode group and sustain electrode group. When the device is driven, an erasing pulse whose instantaneous value increases or decreases with a gentle gradient is applied to one of the scan electrode group and the sustain electrode group to gradually increase the potential difference between the scan electrode group and the sustain electrode group. Erase operation is performed.
【００１４】請求項２記載の気体放電型表示装置の駆動
方法は、請求項１の気体放電型表示装置の駆動方法にお
いて、消去パルスの瞬時値が振幅の１０％から振幅の９
０％までの変化に要する変化時間または振幅の９０％か
ら振幅の１０％までの変化に要する変化時間を１０μｓ
以上１０ｍｓ以下としている。According to a second aspect of the present invention, there is provided a method of driving a gas discharge display device according to the first aspect, wherein the instantaneous value of the erase pulse is 10% to 9% of the amplitude.
The change time required for change to 0% or the change time required for change from 90% of amplitude to 10% of amplitude is 10 μs.
The time is 10 ms or less.
【００１５】[0015]
【作用】この発明の構成によれば、走査電極群および維
持電極群の一方に緩勾配で瞬時値が増加または減少する
消去パルス、例えば瞬時値が振幅の１０％から振幅の９
０％までの変化に要する変化時間または振幅の９０％か
ら振幅の１０％までの変化に要する変化時間を１０μｓ
以上１０ｍｓ以下とする消去パルスが印加されて、走査
電極群および維持電極群の間の電位差が緩やかに増加す
る間に、放電セルの特性ばらつきに応じて、誘電体層上
に蓄積された電荷をちょうど消滅させることができるよ
うな適正な消去放電が各放電セルで起こり、誘電体層上
に蓄積された電荷がほぼ完全に消滅することとなる。According to the configuration of the present invention, an erase pulse whose instantaneous value increases or decreases with a gentle gradient is applied to one of the scan electrode group and the sustain electrode group, for example, the instantaneous value is 10% to 9% of the amplitude.
The change time required for change to 0% or the change time required for change from 90% of amplitude to 10% of amplitude is 10 μs.
While the erase pulse of 10 ms or less is applied and the potential difference between the scan electrode group and the sustain electrode group gradually increases, the charge accumulated on the dielectric layer is changed according to the characteristic variation of the discharge cells. An appropriate erasing discharge that can be just extinguished occurs in each discharge cell, and the charges accumulated on the dielectric layer are almost completely extinguished.
【００１６】[0016]
【実施例】以下、この発明の気体放電型表示装置の駆動
方法の実施例について、図面を参照しながら説明する。
図１は、第１の実施例における気体放電型表示装置（Ａ
Ｃ型プラズマディスプレイパネル）の駆動タイミングの
一例を示すタイムチャートである。なお、パネルの構成
は、従来例で示した図５、図６のものと同一である。図
１に示す書き込み期間において、所定のデータ電極ＤＡ
ＴＡ1 〜ＤＡＴＡM に振幅がＶｗである正の書き込みパ
ルス、第１番目の走査電極ＳＣＮ1 に振幅がＶｓである
負の走査パルスが印加されると、前記所定のデータ電極
ＤＡＴＡ1 〜ＤＡＴＡM と第１番目の走査電極ＳＣＮ1
の交点部の保護膜層表面に電荷が蓄積される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for driving a gas discharge type display device of the present invention will be described below with reference to the drawings.
FIG. 1 shows a gas discharge type display device (A
It is a time chart which shows an example of the drive timing of a C type plasma display panel. The configuration of the panel is the same as that shown in FIGS. 5 and 6 shown in the conventional example. In the writing period shown in FIG. 1, a predetermined data electrode DA
When a positive write pulse with an amplitude of Vw is applied to TA 1 to DATA M and a negative scan pulse with an amplitude of Vs is applied to the first scan electrode SCN 1 , the predetermined data electrodes DATA 1 to DATA M are applied. And the first scan electrode SCN 1
An electric charge is accumulated on the surface of the protective film layer at the intersection point of.
【００１７】つぎに、所定のデータ電極ＤＡＴＡ1 〜Ｄ
ＡＴＡM に振幅がＶｗである正の書き込みパルス、第２
番目の走査電極ＳＣＮ2 に振幅がＶｓである負の走査パ
ルスが印加されると、前記所定のデータ電極ＤＡＴＡ1
〜ＤＡＴＡM と第２番目の走査電極ＳＣＮ2 の交点部の
保護膜層表面に電荷が蓄積される。同様な動作が続いて
行われ、最後に所定のデータ電極ＤＡＴＡ1 〜ＤＡＴＡ
Mに振幅がＶｗである正の書き込みパルス、第Ｎ番目の
走査電極ＳＣＮN に振幅がＶｓである負の走査パルスが
印加されると、前記所定のデータ電極ＤＡＴＡ1 〜ＤＡ
ＴＡM と第Ｎ番目の走査電極ＳＣＮN の交点部の保護膜
層表面に電荷が蓄積される。Next, predetermined data electrodes DATA 1 to D
ATA M positive write pulse with amplitude Vw, second
When a negative scan pulse having an amplitude of Vs is applied to the th scan electrode SCN 2 , the predetermined data electrode DATA 1
Charges are accumulated on the surface of the protective film layer at the intersection of the ~ DATA M and the second scan electrode SCN 2 . The same operation is continuously performed, and finally, the predetermined data electrodes DATA 1 to DATA
When a positive write pulse having an amplitude of Vw is applied to M and a negative scan pulse having an amplitude of Vs is applied to the Nth scan electrode SCN N , the predetermined data electrodes DATA 1 to DA are applied.
Electric charges are accumulated on the surface of the protective film layer at the intersection of TA M and the Nth scan electrode SCN N.
【００１８】続く維持期間において、全ての維持電極Ｓ
ＵＳ1 〜ＳＵＳN と全ての走査電極ＳＣＮ1 〜ＳＣＮN
に交互に振幅がＶｓである負の維持パルスが印加される
と、前記蓄積された電荷により起動されて、その部分の
維持電極ＳＵＳ1 〜ＳＵＳNと走査電極ＳＣＮ1 〜ＳＣ
ＮN 間で維持放電を開始し、その後維持パルスの印加を
続けている間、維持放電が継続する。なお、安定な書き
込み動作および維持動作を行うために、以上の説明にあ
る書き込み、走査、維持の各パルスにおける立ち上がり
および立ち下がりは急峻で、その変化時間は一般に数百
ｎｓ程度のごく短い時間に設定されている。In the subsequent sustain period, all sustain electrodes S are
US 1 to SUS N and all scan electrodes SCN 1 to SCN N
When a negative sustain pulse having an amplitude of Vs is alternately applied to the electrodes, the sustain electrodes SUS 1 to SUS N and the scan electrodes SCN 1 to SC are activated by the accumulated charges.
The sustain discharge is started between N N and then the sustain discharge is continued while the application of the sustain pulse is continued. In order to perform a stable writing operation and sustaining operation, the rising and falling edges of each pulse for writing, scanning, and sustaining described above are steep, and the change time is generally a very short time of about several hundred ns. It is set.
【００１９】続く消去期間において、振幅がＶｅであり
緩勾配（瞬時値が振幅の１０％から振幅の９０％までの
変化に要する変化時間ｔｃが前記のような数百ｎｓに比
べて長い）の負の消去パルスを、全ての維持電極ＳＵＳ
1 〜ＳＵＳN に印加する。この長い変化時間ｔｃにおい
て、走査電極群および維持電極群の間の電位差が緩やか
に増加する間に、放電セルの特性ばらつきに応じた消去
放電が各放電セルで起こり、保護膜層表面に蓄積された
電荷がほぼ完全に消滅して消去動作を行う。なお、消去
パルスの振幅はＶｅとしたが、駆動回路の簡略化のため
に走査パルスおよび維持パルスと同一である振幅のＶｓ
とすることもできる。In the subsequent erasing period, the amplitude is Ve and the gradient is gentle (the change time tc required for changing the instantaneous value from 10% of the amplitude to 90% of the amplitude is longer than the above-mentioned several hundred ns). Negative erase pulse is applied to all sustain electrodes SUS
1 to SUS N. At this long change time tc, while the potential difference between the scan electrode group and the sustain electrode group gradually increases, erase discharge corresponding to the characteristic variation of the discharge cell occurs in each discharge cell and is accumulated on the surface of the protective film layer. The electric charge disappears almost completely and the erase operation is performed. Although the amplitude of the erase pulse is Ve, Vs having the same amplitude as the scan pulse and the sustain pulse is used for simplification of the drive circuit.
It can also be.
【００２０】ここで、消去パルスの瞬時値が緩やかに変
化するための変化時間ｔｃの範囲について説明する。図
２は図１に示した駆動タイミングにおいて、走査パルス
および維持パルスの振幅Ｖｓと、消去パルスの振幅を同
一にした場合の、消去パルスの変化時間ｔｃと、走査、
維持、消去の各パルスの振幅Ｖｓとの間における放電特
性の一例を示した特性図である。この図から、消去パル
スの変化時間ｔｃにおける正常動作領域の下限値は１０
μｓであることが分かる。また、消去パルスの変化時間
ｔｃに関する正常動作領域の上限については、放電動作
上からは制約されないが、表示画面のリフレッシュ時間
（書き込み、維持、消去の各期間を合わせた時間をい
う）の上限が一般的に約１６ｍｓであることから、実用
範囲としては１０ｍｓ程度までに限られる。したがっ
て、実際に使用し得る消去パルスの変化時間ｔｃの範囲
は、その振幅の９０％から１０％までにおいて１０μｓ
以上から１０ｍｓ以下ということになる。なお、リフレ
ッシュ周期は、２階調表示の場合は１／６０秒である。
多階調表示の場合は、サブフィールド法を用いるので、
リフレッシュ周期はさらに小さくなる。例えば２５６階
調表示の場合は、８サブフィールド（２8 ＝２５６）で
１画面を構成するため、リフレッシュ周期は、１／６０
秒を８つに分けたもの（周期は一定ではない）となる。Here, the range of the change time tc for the gradual change of the instantaneous value of the erase pulse will be described. FIG. 2 shows the change time tc of the erase pulse and the scan, when the amplitude Vs of the scan pulse and the sustain pulse and the amplitude of the erase pulse are the same at the drive timing shown in FIG.
FIG. 7 is a characteristic diagram showing an example of discharge characteristics with respect to the amplitude Vs of each pulse for sustaining and erasing. From this figure, the lower limit of the normal operation area at the erase pulse change time tc is 10
It can be seen that it is μs. Also, the upper limit of the normal operation region regarding the change time tc of the erase pulse is not restricted from the viewpoint of the discharge operation, but the upper limit of the refresh time of the display screen (which is the total time of the write, sustain, and erase periods) is set. Since it is generally about 16 ms, the practical range is limited to about 10 ms. Therefore, the range of the erase pulse change time tc that can be actually used is 10 μs at 90% to 10% of its amplitude.
From the above, it means 10 ms or less. Note that the refresh cycle is 1/60 second in the case of 2-gradation display.
In the case of multi-gradation display, since the subfield method is used,
The refresh cycle becomes shorter. For example, in the case of 256 gradation display, one screen is composed of 8 subfields (2 8 = 256), so the refresh cycle is 1/60.
Seconds are divided into eight (the cycle is not constant).
【００２１】図３は、図１に示した消去パルスを発生さ
せるための消去回路の一例を示した回路図である。図３
に示した消去回路は、全ての維持電極ＳＵＳ1 〜ＳＵＳ
N を駆動する高耐圧ドライバ９の出力に、抵抗１０と電
界効果トランジスタ１１を直列に接続している。そし
て、高耐圧ドライバ９の出力を消去動作に先立ってハイ
インピーダンス状態にしておき、消去信号によって電界
効果トランジスタ１１がオンすると、維持電極ＳＵＳ1
〜ＳＵＳN が持つ浮遊容量成分と抵抗１０との時定数に
より、１０μｓ以上から１０ｍｓ以下の長い変化時間を
持つ消去パルスを得ることができる。その後、電界効果
トランジスタ１１をオフにして、高耐圧ドライバ９の出
力をハイレベルにすることで、消去パルスが終了する。
なお、高耐圧ドライバ９は、２種類の維持信号（プルア
ップ側，プルダウン側）を変化させることにより、その
出力状態を制御でき、維持パルスを作成したり、消去パ
ルスの作成の準備等を行うことができる。FIG. 3 is a circuit diagram showing an example of an erase circuit for generating the erase pulse shown in FIG. FIG.
Erase circuit shown in all the sustain electrodes SUS 1 ~SUS
A resistor 10 and a field effect transistor 11 are connected in series to the output of the high breakdown voltage driver 9 that drives N. Then, the output of the high breakdown voltage driver 9 is set to a high impedance state prior to the erase operation, and when the field effect transistor 11 is turned on by the erase signal, the sustain electrode SUS 1
The erase pulse having a long change time of 10 μs or more to 10 ms or less can be obtained by the time constant of the floating capacitance component of ˜SUS N and the resistance 10. After that, the field effect transistor 11 is turned off, and the output of the high breakdown voltage driver 9 is set to a high level, whereby the erase pulse ends.
The high breakdown voltage driver 9 can control the output state by changing two types of sustain signals (pull-up side and pull-down side), create a sustain pulse, and prepare to create an erase pulse. be able to.
【００２２】以上のように、この実施例によれば、維持
電極群に、瞬時値の振幅の１０％から９０％までの変化
時間が１０μｓ以上から１０ｍｓ以下である消去パルス
を印加して、走査電極群および維持電極群の間の電位差
が緩やかに増加する間に、放電セルの特性ばらつきに応
じた消去放電が各放電セルで起こり、保護膜層表面に蓄
積された電荷がほぼ完全に消滅することとなり、その結
果、消去パルスのパルス幅および振幅の許容変動範囲を
大きくとることができ、放電セルの特性にばらつきがあ
っても十分な消去動作マージンが得られる気体放電型表
示装置の駆動方法を提供することができる。As described above, according to this embodiment, an erase pulse whose change time from 10% to 90% of the amplitude of the instantaneous value is 10 μs or more to 10 ms or less is applied to the sustain electrode group to scan. While the potential difference between the electrode group and the sustain electrode group gradually increases, erase discharge corresponding to the characteristic variation of the discharge cell occurs in each discharge cell, and the charge accumulated on the surface of the protective film layer disappears almost completely. As a result, the permissible fluctuation range of the pulse width and amplitude of the erase pulse can be made large, and a sufficient erase operation margin can be obtained even if there are variations in the characteristics of the discharge cell. Can be provided.
【００２３】図４（ａ）〜（ｃ）は、この発明の第２、
第３、第４の各実施例における気体放電型表示装置の駆
動タイミングのうち、消去パルスに関する部分について
のみを示したタイムチャートである。なお、気体放電型
表示装置の構成は、従来例で示した図５、図６のものと
同一である。図４（ａ）は、維持電極ＳＵＳ1 〜ＳＵＳ
N に加える消去パルスの立ち上がりに長い変化時間ｔｃ
を設けて消去放電が起こるようにしたものである。この
場合、消去パルスは、いったん急峻に立ち下げ、その後
緩やかに立ち上げるようにし、走査電極ＳＣＮ1 〜ＳＣ
ＮN の電位を消去パルスの立ち下がり後、立ち上がりの
前に−Ｖｅ（または−Ｖｓ）まで急峻に立ち下げて一定
としている。その他のタイミングについては図１と同一
である。このようにすることで、走査電極ＳＣＮ1 〜Ｓ
ＣＮN および維持電極ＳＵＳ1 〜ＳＵＳN の間の電位差
が緩やかに増加することになり、上記実施例と同様に作
用する。FIGS. 4 (a) to 4 (c) show the second and third aspects of the present invention.
FIG. 13 is a time chart showing only the portion related to the erase pulse in the drive timing of the gas discharge type display device in each of the third and fourth embodiments. The structure of the gas discharge type display device is the same as that of the conventional example shown in FIGS. FIG. 4A shows sustain electrodes SUS 1 to SUS.
Long change time tc at the rise of the erase pulse added to N
Is provided so that erasing discharge occurs. In this case, the erase pulse is made to fall steeply once and then rise gently so that the scan electrodes SCN 1 to SC
After the fall of the erase pulse the potential of N N, it is constant to fall steeply before the rising to -Ve (or -Vs). Other timings are the same as in FIG. By doing so, the scan electrodes SCN 1 to SCN
The potential difference between the CN N and the sustain electrodes SUS 1 to SUS N gradually increases, and the same operation as in the above-described embodiment is performed.
【００２４】また、図４（ｂ）は、図１に示したタイミ
ングのパルス極性を、全て反転させた場合における消去
パルスを示したものである。さらに、図４（ｃ）は、図
４（ａ）において説明したタイミングのパルス極性を全
て反転させた場合における消去パルスを示したものであ
る。これら、図４（ａ）〜（ｃ）に示した第２、第３、
第４の各実施例においても、第１の実施例と同様、維持
電極群に、瞬時値の振幅の９０％から１０％までの変化
時間または振幅の１０％から９０％までの変化時間が１
０μｓ以上から１０ｍｓ以下である消去パルスを印加す
ることにより、走査電極群および維持電極群の間の電位
差が緩やかに増加する間に、放電セルの特性ばらつきに
応じて保護膜層の蓄積電荷をちょうど零にできる適正な
消去放電が各放電セルで起こり、保護膜層表面に蓄積さ
れた電荷がほぼ完全に消滅することとなり、その結果、
消去パルスのパルス幅および振幅の許容変動範囲を大き
くとることができ、放電セルの特性にばらつきがあって
も十分な消去動作マージンが得られる気体放電型表示装
置の駆動方法を提供することができる。FIG. 4B shows an erase pulse when the pulse polarities at the timings shown in FIG. 1 are all inverted. Further, FIG. 4C shows an erase pulse in the case where all the pulse polarities at the timings described in FIG. 4A are inverted. These are the second, third, and third shown in FIGS.
In each of the fourth embodiments, as in the first embodiment, the sustain electrode group has a change time of 90% to 10% of the amplitude of the instantaneous value or a change time of 10% to 90% of the amplitude of the instantaneous value of 1.
By applying the erase pulse of 0 μs or more to 10 ms or less, the accumulated charge of the protective film layer is adjusted according to the characteristic variation of the discharge cell while the potential difference between the scan electrode group and the sustain electrode group gradually increases. An appropriate erase discharge that can be reduced to zero occurs in each discharge cell, and the charge accumulated on the surface of the protective film layer is almost completely extinguished.
It is possible to provide a method of driving a gas discharge type display device capable of widening the permissible fluctuation range of the pulse width and amplitude of the erase pulse and obtaining a sufficient erase operation margin even if the characteristics of the discharge cell vary. .
【００２５】なお、この発明の実施例では維持電極群に
消去パルスを印加した場合を説明したが、走査電極群に
消去パルスを印加した場合も同様の効果が得られる。さ
らに、この発明の実施例では全ての維持電極に同じタイ
ミングで消去パルスを印加する場合を説明したが、複数
ブロックに維持電極群または走査電極群を分けて、各ブ
ロック毎に別タイミングで消去パルスを印加しても同様
の効果が得られる。Although the embodiment of the present invention describes the case where the erase pulse is applied to the sustain electrode group, the same effect can be obtained when the erase pulse is applied to the scan electrode group. Furthermore, in the embodiment of the present invention, the case where the erase pulse is applied to all the sustain electrodes at the same timing has been described. The same effect can be obtained by applying.
【００２６】また、上記実施例では、誘電体層の表面に
保護膜層を設けているが、誘電体層に放電に対する十分
な強度があれば、保護膜層は省くことができる。また、
絶縁基板としては、強度が十分であればセラミック基板
でもよく、ガラス基板に限らない。また、一対の絶縁基
板のうち、片方は放電光を照射することが必要であるの
で、透明であることが必要である。Further, in the above embodiment, the protective film layer is provided on the surface of the dielectric layer, but the protective film layer can be omitted if the dielectric layer has sufficient strength against discharge. Also,
The insulating substrate may be a ceramic substrate as long as it has sufficient strength, and is not limited to a glass substrate. Further, one of the pair of insulating substrates needs to be transparent because it is necessary to irradiate the discharge light.
【００２７】[0027]
【発明の効果】請求項１記載の気体放電型表示装置の駆
動方法によれば、走査電極群および維持電極群の一方に
緩勾配で瞬時値が増加または減少する消去パルスを印加
して、走査電極群および維持電極群間の電位差を緩やか
に増加させることにより消去動作を行うので、消去パル
スのパルス幅および振幅の許容変動範囲を大きくとるこ
とができ、放電セルの特性にばらつきがあっても十分な
消去動作マージンが得られるという効果を奏する。According to the driving method of the gas discharge type display device of the first aspect, an erasing pulse whose instantaneous value increases or decreases with a gentle gradient is applied to one of the scan electrode group and the sustain electrode group for scanning. Since the erasing operation is performed by gradually increasing the potential difference between the electrode group and the sustain electrode group, the pulse width and amplitude of the erasing pulse can be allowed to have a wide fluctuation range, and even if the discharge cell characteristics vary. The effect is that a sufficient erase operation margin can be obtained.
【００２８】請求項２記載の気体放電型表示装置の駆動
方法によれば、走査電極群および維持電極群の一方に、
瞬時値が振幅の１０％から振幅の９０％までの変化に要
する変化時間または振幅の９０％から振幅の１０％まで
の変化に要する変化時間を１０μｓ以上１０ｍｓ以下の
消去パルスを印加して、走査電極群および維持電極群間
の電位差を緩やかに増加させることにより消去動作を行
うので、消去パルスのパルス幅および振幅の許容変動範
囲を大きくとることができ、放電セルの特性にばらつき
があっても十分な消去動作マージンが得られるという効
果を奏する。According to the driving method of the gas discharge type display device of the second aspect, one of the scan electrode group and the sustain electrode group comprises:
Scanning is performed by applying an erase pulse of 10 μs or more and 10 ms or less for the change time required to change the instantaneous value from 10% of the amplitude to 90% of the amplitude or the change time required to change from the 90% of the amplitude to 10% of the amplitude. Since the erasing operation is performed by gradually increasing the potential difference between the electrode group and the sustain electrode group, the pulse width and amplitude of the erasing pulse can be allowed to have a wide fluctuation range, and even if the discharge cell characteristics vary. The effect is that a sufficient erase operation margin can be obtained.
【図１】この発明の第１の実施例における気体放電型表
示装置の駆動タイミングの一例を示すタイムチャートで
ある。FIG. 1 is a time chart showing an example of drive timing of a gas discharge display device according to a first embodiment of the present invention.
【図２】図１の駆動タイミングにおける放電特性の一例
を示す特性図である。FIG. 2 is a characteristic diagram showing an example of discharge characteristics at the drive timing of FIG.
【図３】図１の消去パルスを発生させるための消去回路
の一例を示す回路図である。3 is a circuit diagram showing an example of an erase circuit for generating the erase pulse of FIG.
【図４】この発明の第２、第３、第４の各実施例におけ
る気体放電型表示装置の駆動タイミングの例を示すタイ
ムチャートである。FIG. 4 is a time chart showing an example of drive timings of the gas discharge type display device in each of the second, third and fourth embodiments of the present invention.
【図５】気体放電型表示装置の一例を示す一部平面図お
よびその断面図である。5A and 5B are a partial plan view and a cross-sectional view showing an example of a gas discharge display device.
【図６】気体放電型表示装置の一例を示す電極配列図で
ある。FIG. 6 is an electrode array diagram showing an example of a gas discharge display device.
【図７】従来例の気体放電型表示装置の駆動タイミング
の一例を示すタイムチャートである。FIG. 7 is a time chart showing an example of drive timing of a conventional gas discharge display device.
１ ガラス基板（絶縁基板） ２ 走査電極 ３ 維持電極 ４ 誘電体層 ６ 放電空間 ７ データ電極 ８ ガラス基板（絶縁基板） 1 glass substrate (insulating substrate) 2 scan electrode 3 sustain electrode 4 dielectric layer 6 discharge space 7 data electrode 8 glass substrate (insulating substrate)
Claims (2)
板のうち、一方の絶縁基板上に誘電体層で覆われた対と
なる走査電極群と維持電極群を互いに平行して配列し、
他方の絶縁基板上に前記走査電極群と前記維持電極群と
に直交対向してデータ電極群を配列してなる気体放電型
表示装置を駆動する気体放電型表示装置の駆動方法であ
って、 前記走査電極群および前記維持電極群の一方に緩勾配で
瞬時値が増加または減少する消去パルスを印加して、前
記走査電極群および前記維持電極群間の電位差を緩やか
に増加させることにより消去動作を行うことを特徴とす
る気体放電型表示装置の駆動方法。1. A pair of scan electrodes and a sustain electrode group covered with a dielectric layer are arranged in parallel on one of the pair of insulating substrates facing each other across a discharge space,
A driving method of a gas discharge type display device for driving a gas discharge type display device in which a data electrode group is arranged orthogonally to the scan electrode group and the sustain electrode group on the other insulating substrate, wherein An erasing operation is performed by applying an erasing pulse whose instantaneous value increases or decreases with a gentle gradient to one of the scan electrode group and the sustain electrode group to gradually increase the potential difference between the scan electrode group and the sustain electrode group. A method of driving a gas discharge type display device, which is characterized in that:
振幅の９０％までの変化に要する変化時間または振幅の
９０％から振幅の１０％までの変化に要する変化時間を
１０μｓ以上１０ｍｓ以下としている請求項１記載の気
体放電型表示装置の駆動方法。2. The change time required to change the instantaneous value of the erase pulse from 10% of the amplitude to 90% of the amplitude or the change time required to change from 90% of the amplitude to 10% of the amplitude is 10 μs or more and 10 ms or less. The method of driving a gas discharge display device according to claim 1.
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16385094A JP2895397B2 (en) | 1994-07-15 | 1994-07-15 | Driving method of gas discharge type display device |
| US08/428,575 US5656893A (en) | 1994-04-28 | 1995-04-25 | Gas discharge display apparatus |
| CA002147902A CA2147902C (en) | 1994-04-28 | 1995-04-26 | Gas discharge display apparatus and method for driving the same |
| DE69531174T DE69531174T2 (en) | 1994-04-28 | 1995-04-26 | Method for controlling a gas discharge display device |
| EP95106246A EP0680067B1 (en) | 1994-04-28 | 1995-04-26 | Method for driving a gas discharge display device |
| FI952020A FI952020A (en) | 1994-04-28 | 1995-04-27 | A plasma display device and a method for its control |
| KR1019950010890A KR0178306B1 (en) | 1994-04-28 | 1995-04-28 | Gas discharge display apparatus |
| CN95105795A CN1074164C (en) | 1994-04-28 | 1995-04-28 | Gas discharge display apparatus and method for driving the same |
| CNB001036351A CN1227635C (en) | 1994-04-28 | 1995-04-28 | Gas discharge display device and method of actuating said device |
| US08/745,074 US6150766A (en) | 1994-04-28 | 1996-11-07 | Gas discharge display apparatus and method for driving the same |
| US09/108,577 US5969478A (en) | 1994-04-28 | 1998-07-01 | Gas discharge display apparatus and method for driving the same |
| US09/280,594 US6072279A (en) | 1994-04-28 | 1999-03-29 | Gas discharge display apparatus and method for driving the same |
| US09/353,710 US6118220A (en) | 1994-04-28 | 1999-07-14 | Gas discharge display apparatus and method for driving the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16385094A JP2895397B2 (en) | 1994-07-15 | 1994-07-15 | Driving method of gas discharge type display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0830228A true JPH0830228A (en) | 1996-02-02 |
| JP2895397B2 JP2895397B2 (en) | 1999-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16385094A Expired - Lifetime JP2895397B2 (en) | 1994-04-28 | 1994-07-15 | Driving method of gas discharge type display device |
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| Country | Link |
|---|---|
| JP (1) | JP2895397B2 (en) |
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