JP2841469B2 - Gas discharge display element and driving method thereof - Google Patents
Gas discharge display element and driving method thereofInfo
- Publication number
- JP2841469B2 JP2841469B2 JP1117703A JP11770389A JP2841469B2 JP 2841469 B2 JP2841469 B2 JP 2841469B2 JP 1117703 A JP1117703 A JP 1117703A JP 11770389 A JP11770389 A JP 11770389A JP 2841469 B2 JP2841469 B2 JP 2841469B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- gas
- gas discharge
- electric field
- electrode pair
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、表示デバイスなどに用いるガス放電表示素
子、及びその駆動方法に関するものである。更に詳しく
は、表示デバイスに必要な良好な放電特性を有するガス
放電表示素子を得ることを目的とした、ガス放電表示素
子の構造及びその駆動方法に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge display element used for a display device and the like, and a driving method thereof. More specifically, the present invention relates to a structure of a gas discharge display element and a method of driving the same for the purpose of obtaining a gas discharge display element having good discharge characteristics required for a display device.
ガス放電表示素子はその構造及び駆動方法によってAC
型,DC型に分類されるが、いずれの場合にも第２図A,B
（Ａは平面図、ＢはＡのｂ−ｂ′における断面図）に示
すように一対の主電極対（２）を有し、ON表示状態を維
持する継続的あるいは繰り返し放電は、放電空間（９）
に存在するガスに放電を開始させるに充分な電界を与え
る電圧を二つの電極（２）に印加することによって起こ
る。このとき、電極（２）の構造によって決まる電気力
線の分布は変化しない。つまり、DC型の場合、ほぼ対向
する二つの電極間に直流または直流方形波電圧を印加
し、放電を発生・維持させ、電圧印加時間（パルス長）
に依存した放電特性を得ている。AC型では、対向または
同一面内に存在する誘電体で覆われた二つの電極間に交
流方形波電圧を印加し、一つのパルス電圧印加の時間内
に、放電開始及び荷電粒子が壁電荷を成形するため実効
的な電界が減少し電圧印加中に放電が消滅する。いずれ
の場合にも一回の放電の発生から消滅まで、外部から与
えられる巨視的な電気力線の分布に変化はない。Depending on the structure and driving method, gas discharge
Type and DC type.
(A is a plan view, B is a cross-sectional view taken along line bb 'of A), and has a pair of main electrode pairs (2). 9)
This is caused by applying a voltage to the two electrodes (2) that gives a sufficient electric field to the gas present in the gas to initiate a discharge. At this time, the distribution of lines of electric force determined by the structure of the electrode (2) does not change. In other words, in the case of the DC type, a DC or DC square wave voltage is applied between two electrodes that are substantially opposed to each other to generate and maintain discharge, and the voltage application time (pulse length)
Is obtained depending on the discharge characteristics. In the AC type, an AC square wave voltage is applied between two electrodes covered with a dielectric that are opposed to each other or in the same plane, and within one pulse voltage application time, discharge starts and charged particles generate wall charges. Due to the shaping, the effective electric field decreases and the discharge disappears during the application of the voltage. In any case, there is no change in the distribution of the externally applied macroscopic lines of electric force from the generation to the disappearance of one discharge.
ガス放電表示素子は、発光型の平面薄型ディスプレイ
を実現し得るデバイスとされているが、発光特性、特に
カラー化のための紫外光の発光効率が充分でない。さら
に、高精細化を進める上で放電空間が微小になるとガス
放電を発生させる電界の大きさが増大し、また放電ガス
圧の増大にともなう発光効率の低下が生じていた。Although the gas discharge display element is a device capable of realizing a light-emitting flat thin display, the light-emitting characteristics, particularly, the luminous efficiency of ultraviolet light for colorization are not sufficient. Furthermore, when the discharge space is reduced in order to achieve higher definition, the magnitude of the electric field for generating gas discharge increases, and the luminous efficiency decreases with the increase in discharge gas pressure.
本発明の目的は、高精細な発光型平面薄型ディスプレ
イに関し、ガス放電表示素子の高効率発光を可能にす
る、ガス放電表示素子の構造及び駆動方法を提供するこ
とにある。An object of the present invention is to provide a structure and a driving method of a gas discharge display element, which enable a high-efficiency light emission of the gas discharge display element with respect to a high-definition light emitting flat thin display.
本発明は、ガス放電を発生せしめる、一対の主電極、
放電ガス及び放電空間を有するガス放電表示素子に於
て、これらの電極に印加され放電を発生または継続させ
る電圧による電界の方向に垂直な方向の電界を与える補
助電極対を有するガス放電表示素子の構造、及び上記構
造のガス放電表示素子に於て、垂直な電界を与える補助
電極対に、この電極対だけでは放電を維持することがで
きない大きさの交流電圧を印加するガス放電表示素子の
駆動方法である。The present invention provides a gas discharge, a pair of main electrodes,
In a gas discharge display device having a discharge gas and a discharge space, a gas discharge display device having a pair of auxiliary electrodes for applying an electric field in a direction perpendicular to the direction of an electric field by a voltage applied to these electrodes to generate or continue a discharge. In the gas discharge display device having the above structure and the above structure, driving of the gas discharge display device in which an AC voltage having a magnitude that cannot sustain discharge by the electrode pair alone is applied to the auxiliary electrode pair that applies a vertical electric field. Is the way.
放電によって電離した放電ガス原子は放電空間中に電
子及びイオンとして存在するが、これらの荷電粒子は主
電極対及び荷電粒子自体の分布によって形成される空間
電荷による電界に作用され、放電空間中を移動する。主
に、この荷電粒子の移動によるエネルギーがさらなる電
離を引き起こす。放電ガスによる発光効率は、放電空間
に於ける単位時間・単位体積当りの電離効率に依存する
と考えられ、印加電圧，ガス圧力，電極間距離等放電空
間形状に関係している。しかし、微小な空間で放電を発
生させるガス放電表示素子では、これらの条件の自由度
が少ない。そこで、本発明に於いては主電極間を移動す
る荷電粒子に、主電極の与える電界にほぼ垂直な振動す
る電界を放電空間に与えることにした。これにより、電
極間の放電空間における荷電粒子の実効的な移動距離が
大きくなり、放電空間での単位体積あたりの電離効率が
向上し、ひいては放電ガスまたは発光性ガス成分の励起
効率を向上させることが可能となり発光効率が改善され
た。また放電ガスに印加される最大電界が上昇するた
め、主電極間に放電を維持するために印加する電圧を下
げることが可能となった。Discharge gas atoms ionized by the discharge are present as electrons and ions in the discharge space, but these charged particles are affected by an electric field due to space charge formed by the main electrode pair and the distribution of the charged particles themselves, and pass through the discharge space. Moving. Mainly, the energy due to the movement of the charged particles causes further ionization. The luminous efficiency by the discharge gas is considered to depend on the ionization efficiency per unit time and unit volume in the discharge space, and is related to the shape of the discharge space such as applied voltage, gas pressure, distance between electrodes, and the like. However, a gas discharge display element that generates a discharge in a minute space has a low degree of freedom in these conditions. Therefore, in the present invention, an oscillating electric field substantially perpendicular to the electric field provided by the main electrode is applied to the discharge space for the charged particles moving between the main electrodes. As a result, the effective moving distance of the charged particles in the discharge space between the electrodes is increased, the ionization efficiency per unit volume in the discharge space is improved, and the excitation efficiency of the discharge gas or the luminescent gas component is improved. And the luminous efficiency was improved. In addition, since the maximum electric field applied to the discharge gas increases, the voltage applied to maintain the discharge between the main electrodes can be reduced.
次に、本発明の実施例を図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第１図は、本発明の一実施例を示すガス放電表示素子
の電極配置図（第１図Ａ）及び断面図（第１図Ｂ）であ
る。以下、AC面放電型ガス放電表示素子を例に詳細を説
明する。ガラス基板（１）上にAlよりなる主電極（２）
を蒸着及びフォトリソグラフィにより形成し、主電極
（２）を覆って第1Al2O3層（３）を５μｍ成膜し、この
第1Al2O3層上にAlよりなる補助電極（４）を蒸着及びフ
ォトリソグラフィにより形成した。さらに、第2Al2O3層
（５）を２μｍ及びMgO層（６）を１μｍ形成した。最
後に蛍光体（７）を塗布した全面ガラス（８）0.5mmの
ギャップで貼合わせ、ギャップ中にHe−Xe（２％）混合
ガスを放電ガス（10）として300torr封入し、AC面放電
型ガス放電表示素子とした。FIG. 1 is an electrode layout diagram (FIG. 1A) and a cross-sectional view (FIG. 1B) of a gas discharge display element showing one embodiment of the present invention. Hereinafter, the AC surface discharge type gas discharge display element will be described in detail as an example. Main electrode (2) made of Al on glass substrate (1)
Is formed by vapor deposition and photolithography, a first Al 2 O 3 layer (3) is formed to a thickness of 5 μm over the main electrode (2), and an auxiliary electrode (4) made of Al is formed on the first Al 2 O 3 layer. It was formed by vapor deposition and photolithography. Further, a second Al 2 O 3 layer (5) was formed at 2 μm and a MgO layer (6) was formed at 1 μm. Finally, the whole surface glass (8) coated with the phosphor (7) is bonded with a gap of 0.5mm, and a He-Xe (2%) mixed gas is filled in the gap as a discharge gas (10) at 300 torr, and an AC surface discharge type A gas discharge display element was used.
主電極（２）間に10μsecのパルス幅で2.5KHzの交流
パルス電圧を印加し、補助電極（４）間に交流正弦波電
圧を印加してガス放電表示素子の発光特性を測定した。
第３図に、補助電極（４）間に印加した5MHzの交流電圧
の電圧値を変化させたときの、放電の消滅する主電極
（２）間電圧Vd及び蛍光体（７）により可視光に変換さ
れた発光の効率ηを示す。補助電極（４）に印加する電
圧が20V以下の時はVd及びηに殆ど変化はみられない
が、20V以上になるとVdが減少、ηが増加し素子の発光
特性が向上していることがわかる。およそ100V以上にな
ると、補助電極（４）と主電極（２）の間で放電が発生
し良好なガス放電を維持できなくなった。次に補助電極
（４）に印加する電圧を60V一定とし、周波数を変化さ
せ、発光特性Vd及びηを測定した。第４図に示すよう
に、1MHz以下の周波数では発光特性の変化は殆ど無い。
1MHz以上になるとηが増加し、発光特性が向上している
ことがわかる。An AC pulse voltage of 2.5 KHz with a pulse width of 10 μsec was applied between the main electrode (2) and an AC sine wave voltage was applied between the auxiliary electrodes (4) to measure the light emission characteristics of the gas discharge display element.
The three figures, when changing the voltage value of the AC voltage of 5MHz was applied between the auxiliary electrode (4), visible light by the main electrode (2) between the voltage V d and the phosphor disappearance of discharge (7) Shows the light emission efficiency η converted to. Although the voltage applied to the auxiliary electrode (4) is hardly changes were seen in V d and η when the 20V or less, V d decrease becomes more than 20V, the light-emitting characteristics of η increases and the element is improved You can see that. When the voltage was about 100 V or more, discharge occurred between the auxiliary electrode (4) and the main electrode (2), and good gas discharge could not be maintained. Next, the voltage applied to the auxiliary electrode (4) was fixed at 60 V, the frequency was changed, and the light emission characteristics Vd and η were measured. As shown in FIG. 4, there is almost no change in the light emission characteristics at a frequency of 1 MHz or less.
It can be seen that when the frequency is 1 MHz or more, η increases and the light emission characteristics are improved.
同様な実験を、対向型AC及びDC型ガス放電表示素子に
於て行なったところ、上記AC面放電ガス放電表示素子の
場合と同様な効果がみられた。When a similar experiment was performed on the opposed AC and DC type gas discharge display devices, the same effect as in the case of the AC surface discharge gas discharge display device was obtained.
以上説明したように、本発明のガス放電表示素子は、
主電極により与えられる電界に垂直な電界を与える補助
電極を有することにより、放電期間中に主電極の与える
電界に垂直な方向に振動する電界を加えることが可能と
なり、ガス放電表示素子の発光効率を改善することがで
きる。更に、補助電極に放電維持時間より短い周期の交
流電圧を印加することにより、発光特性の改善がより顕
著になる。また、このようなガス放電表示素子をマトリ
クスに配置し、各素子を選択的にON/OFFすることによ
り、良好な表示品位を有する平面薄型のガス放電表示パ
ネルを提供することが可能である。As described above, the gas discharge display element of the present invention is:
By having an auxiliary electrode that applies an electric field perpendicular to the electric field provided by the main electrode, it becomes possible to apply an electric field that oscillates in a direction perpendicular to the electric field provided by the main electrode during the discharge period, and the luminous efficiency of the gas discharge display element Can be improved. Further, by applying an AC voltage having a cycle shorter than the discharge sustaining time to the auxiliary electrode, the light emission characteristics are more significantly improved. Further, by arranging such gas discharge display elements in a matrix and selectively turning on / off each element, a flat and thin gas discharge display panel having good display quality can be provided.
本発明は、上述のガス放電表示素子の構造及び駆動方
法を用いることにより、良好な発光特性を有するガス放
電表示素子を得ることを可能にしたものである。According to the present invention, it is possible to obtain a gas discharge display element having good light emission characteristics by using the above-described structure and driving method of the gas discharge display element.
【図面の簡単な説明】 第１図は本発明の一実施例を示すガス放電表示素子の構
造図、第２図は従来のガス放電表示素子の一例を示す
図、第３図は補助電極に印加する交流電圧に対する放電
の消滅する主電極間の電圧及び発光効率の変化を示す
図、第４図は補助電極に印加する交流の周波数に対する
放電の消滅する主電極間の電圧及び発光効率の変化を示
す図である。 １……ガラス基板、２……主電極、４……補助電極、８
……前面ガラス。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural view of a gas discharge display device showing one embodiment of the present invention, FIG. 2 is a diagram showing an example of a conventional gas discharge display device, and FIG. FIG. 4 is a diagram showing changes in the voltage between the main electrodes at which the discharge disappears and the luminous efficiency with respect to the applied AC voltage. FIG. 4 shows changes in the voltage between the main electrodes at which the discharge disappears and the luminous efficiency with respect to the frequency of the AC applied to the auxiliary electrode. FIG. 1 ... glass substrate, 2 ... main electrode, 4 ... auxiliary electrode, 8
...... Front glass.
Claims (2)
有する第１の基板と、蛍光体が形成された第２の基板と
を対向配置し、その基板間に放電ガスを充填した放電空
間を有するガス放電表示素子に於て、前記一つの主電極
対に印加され放電を発生または継続させる電圧による電
界の方向に垂直に方向に、放電を維持できない電界強度
の振動電界を与えて放電空間中の荷電粒子の移動距離を
大きくする補助電極対を前記一つの主電極対と同一の第
１の基板上に有することを特徴とするガス放電表示素
子。1. A discharge space in which a first substrate having one main electrode pair for generating a gas discharge and a second substrate on which a phosphor is formed are opposed to each other, and a discharge gas is filled between the substrates. In the gas discharge display device having a discharge space, a vibration space having an electric field strength that cannot maintain the discharge is given in a direction perpendicular to the direction of the electric field by the voltage applied to the one main electrode pair to generate or continue the discharge. A gas discharge display element comprising: a pair of auxiliary electrodes for increasing a moving distance of charged particles therein on the same first substrate as the one main electrode pair.
する第１の基板と、蛍光体が形成された第２の基板とを
対向配置し、その基板間に放電ガスを充填した放電空間
を有し、前記一つの主電極対に印加され放電を発生また
は継続される電圧による電界の方向に垂直な方向の電界
を与える補助電極対を前記一つの主電極対と同一の第１
の基板上に有するガス放電表示素子に於て、この垂直な
電界を与える補助電極対に、この電極対だけでは放電を
維持することができない大きさの交流電圧を印加するこ
とを特徴とするガス放電表示素子の駆動方法。2. A first substrate having one main electrode pair for generating a gas discharge and a second substrate on which a phosphor is formed are opposed to each other, and a discharge space filled with a discharge gas is provided between the substrates. A first auxiliary electrode pair identical to the one main electrode pair, the auxiliary electrode pair providing an electric field in a direction perpendicular to the direction of the electric field by the voltage applied to the one main electrode pair and generating or continuing discharge;
A gas discharge display element having a vertical electric field applied to a pair of auxiliary electrodes for applying a vertical electric field to the auxiliary electrode pair. A method for driving a discharge display element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1117703A JP2841469B2 (en) | 1989-05-10 | 1989-05-10 | Gas discharge display element and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1117703A JP2841469B2 (en) | 1989-05-10 | 1989-05-10 | Gas discharge display element and driving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02297836A JPH02297836A (en) | 1990-12-10 |
| JP2841469B2 true JP2841469B2 (en) | 1998-12-24 |
Family
ID=14718221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1117703A Expired - Fee Related JP2841469B2 (en) | 1989-05-10 | 1989-05-10 | Gas discharge display element and driving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2841469B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3156659B2 (en) | 1998-01-09 | 2001-04-16 | 日本電気株式会社 | Plasma display panel and driving method thereof |
| KR100577158B1 (en) * | 1999-05-10 | 2006-05-10 | 엘지전자 주식회사 | Method Of Driving Plasma Display Panel Using High Frequency And Apparatus Thereof |
| KR100558710B1 (en) * | 1999-03-11 | 2006-03-10 | 엘지전자 주식회사 | Circuit Of Driving Plasma Display Panel Using High Frequency |
| KR100577174B1 (en) * | 1999-03-16 | 2006-05-09 | 엘지전자 주식회사 | Plasma Display Panel Using High Frequency |
| KR20000065834A (en) * | 1999-04-09 | 2000-11-15 | 구자홍 | Method of Driving Plasma Display Panel for Radio Frequency |
| KR100587285B1 (en) * | 1999-03-16 | 2006-06-08 | 엘지전자 주식회사 | Driving Circuit Of Plasma Display Panel Using High Frequency |
| KR100514255B1 (en) * | 1999-03-16 | 2005-09-15 | 엘지전자 주식회사 | Method Of Driving Plasma Display Panel Using High Frequency |
| KR100516933B1 (en) * | 1999-05-21 | 2005-09-26 | 엘지전자 주식회사 | Method Of Driving Plasma Display Panel Using High Frequency |
| KR100585633B1 (en) * | 1999-06-02 | 2006-06-02 | 엘지전자 주식회사 | Driving Method of Plasma Display Panel for Radio Frequency |
| JP2001306029A (en) * | 2000-04-25 | 2001-11-02 | Fujitsu Hitachi Plasma Display Ltd | Method for driving ac-type pdp |
-
1989
- 1989-05-10 JP JP1117703A patent/JP2841469B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02297836A (en) | 1990-12-10 |
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