JPH11120920A - Plasma display device - Google Patents
Plasma display deviceInfo
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- JPH11120920A JPH11120920A JP27841797A JP27841797A JPH11120920A JP H11120920 A JPH11120920 A JP H11120920A JP 27841797 A JP27841797 A JP 27841797A JP 27841797 A JP27841797 A JP 27841797A JP H11120920 A JPH11120920 A JP H11120920A
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- plasma
- plasma display
- electrode
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はプラズマディスプレ
イ（以降ＰＤＰとする）装置の放電ガスに関し、更に
は、安定化ガスに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge gas for a plasma display (hereinafter referred to as "PDP") device, and more particularly to a stabilizing gas.
【０００２】[0002]
【従来の技術】ＰＤＰの駆動は、例えば特開平４-３３
２４３０に開示されるように、放電の前の予備放電期間
と書き込み期間によって発光させるセルを選択する方式
が一般的であり、この段階で電極上に正確に電荷を形成
する必要がある。しかし、プラズマ中には放電終了後も
励起されたＸｅ*原子が残っており、これがＭｇＯ保護
膜に衝突することによって電子を生成する。このＸｅ*
原子の寿命は非常に長く、予備放電期間や書き込み期間
で要する時間と同程度であるため、放電終了後に生成さ
れた電子は書き込み放電時に電荷の形成を妨害してしま
う。2. Description of the Related Art PDP is driven, for example, in Japanese Patent Laid-Open No. 4-33.
As disclosed in 2430, a method of selecting a cell to emit light according to a pre-discharge period and a writing period before discharging is general, and it is necessary to accurately form charges on the electrodes at this stage. However, excited Xe * atoms remain in the plasma even after the end of the discharge, and these generate electrons by colliding with the MgO protective film. This Xe *
The life of the atoms is very long, which is almost the same as the time required for the preliminary discharge period and the writing period, so that the electrons generated after the end of the discharge hinder the formation of electric charge during the writing discharge.
【０００３】従って、安定した発光という点から必ずし
も満足できる構成ではなかった。Therefore, the configuration is not always satisfactory in terms of stable light emission.
【０００４】[0004]
【発明が解決しようとする課題】本発明の課題は誤放電
を低減することが可能な手段を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide means capable of reducing erroneous discharge.
【０００５】[0005]
【課題を解決するための手段】上記課題に対して本発明
ではＰＤＰのセル内でプラズマを生成するガスの主成分
であるＨｅ,Ｎｅ,Ａｒ,Ｋｒ,Ｘｅ等にＯ２,Ｎ２,ＣＯ
２,ＣＦ４,Ｈ２等のガスを添加する手段を用いる。According to the present invention, O2, N2, CO2 is added to He, Ne, Ar, Kr, Xe, etc., which are the main components of a gas for generating plasma in a PDP cell.
Means for adding a gas such as 2, CF4 and H2 is used.
【０００６】[0006]
【発明の実施の形態】以下図１から図５を用い本発明の
実施形態を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【０００７】図２は本発明を適用するＰＤＰの構造の一
部を示す分解斜視図であり、前面ガラス基板２１の下面
には透明な共通電極（以降Ｘ電極と称す）２２-１乃至
２２-２と、透明な独立電極（以降Ｙ電極と称す）２３-
１乃至２３-２を付設する。また、Ｘ電極２２-１乃至２
２-２とＹ電極２３-１乃至２３-２には、それぞれＸバ
ス電極２４-１乃至２４-２とＹバス電極２５-１乃至２
５-２を積層付設する。さらに、Ｘ電極２２-１乃至２２
-２、Ｙ電極２３-１乃至２３-２、Ｘバス電極２４-１乃
至２４-２、Ｙバス電極２５-１乃至２５-２を誘電体２
６によって被覆し、ＭｇＯ等の保護層２７を付設する。FIG. 2 is an exploded perspective view showing a part of the structure of a PDP to which the present invention is applied. A transparent common electrode (hereinafter referred to as an X electrode) 22-1 to 22- is provided on the lower surface of the front glass substrate 21. 2 and a transparent independent electrode (hereinafter referred to as a Y electrode)
1 to 23-2 are additionally provided. Further, the X electrodes 22-1 and 22-2
The X bus electrodes 24-1 and 24-2 and the Y bus electrodes 25-1 and 25-2 are respectively connected to the 2-2 and the Y electrodes 23-1 to 23-2.
5-2 is laminated. Further, the X electrodes 22-1 to 22-2
-2, the Y electrodes 23-1 to 23-2, the X bus electrodes 24-1 to 24-2, and the Y bus electrodes 25-1 to 25-2 are made of a dielectric material 2.
6, and a protective layer 27 of MgO or the like is provided.
【０００８】一方、背面ガラス基板２８の上面には、Ｘ
電極２２-１乃至２２-２、Ｙ電極２３-１乃至２３-２と
直角に立体交差する電極（以降Ａ電極と称す）２９を付
設し、該Ａ電極２９を誘電体３０によって被覆し、該誘
電体３０の上に隔壁３１をＡ電極２９と平行に設ける。
さらに、隔壁３１の壁面と誘電体３０の上面によって形
成される凹領域のうちＡ電極２９を挟む部分の内側に蛍
光体３２を塗布する。On the other hand, on the upper surface of the rear glass substrate 28, X
An electrode (hereinafter, referred to as an A electrode) 29 which crosses the electrodes 22-1 to 22-2 and the Y electrodes 23-1 to 23-2 at right angles is provided, and the A electrode 29 is covered with a dielectric 30. A partition 31 is provided on the dielectric 30 in parallel with the A electrode 29.
Further, the phosphor 32 is applied to the inside of a portion sandwiching the A electrode 29 in the concave region formed by the wall surface of the partition wall 31 and the upper surface of the dielectric 30.
【０００９】図３は図２中の矢印Ｄ１の方向から見たＰ
ＤＰの断面図であり、画素の最小単位であるセル１個を
示している。FIG. 3 is a plan view of P as viewed from the direction of arrow D1 in FIG.
FIG. 3 is a cross-sectional view of the DP, showing one cell which is a minimum unit of a pixel.
【００１０】図３より、Ａ電極２９は２つの隔壁３１の
中間に位置し前面ガラス基板２１と背面ガラス基板２
８、隔壁３１に囲まれた放電空間３３にはプラズマを生
成するためのガスを充填する。As shown in FIG. 3, the A electrode 29 is located between the two partition walls 31 and is located between the front glass substrate 21 and the rear glass substrate 2.
8. The discharge space 33 surrounded by the partition walls 31 is filled with a gas for generating plasma.
【００１１】尚、放電空間３３は隔壁３１により空間的
に区切られることもあるし、隔壁３１と前面ガラス基板
２１の放電空間側面との間に間隙を設け空間的に連続に
することもある。The discharge space 33 may be spatially separated by the partition wall 31 or a space may be provided between the partition wall 31 and the side of the discharge space of the front glass substrate 21 so as to be spatially continuous.
【００１２】図４は図２中の矢印Ｄ２の方向からみたＰ
ＤＰの断面図であり、１個のセルを示している。セルの
境界は概略点線で示す位置である。図４より、３は電
子、４は正イオン、５は正壁電荷、６は負壁電荷を示
す。FIG. 4 shows P as viewed from the direction of arrow D2 in FIG.
FIG. 3 is a cross-sectional view of the DP, showing one cell. The cell boundary is a position indicated by a dotted line. 4, 3 indicates an electron, 4 indicates a positive ion, 5 indicates a positive wall charge, and 6 indicates a negative wall charge.
【００１３】図４には、例としてＡ電極２９、Ｙ電極２
３-１に＋の電圧を、X電極２２-１に−の電圧を印加し
た模式図を表している。この状態で、放電空間に電子３
及び正イオン４が残っていると、正壁電荷５及び負壁電
荷６を消去し、書き込みを阻害する。FIG. 4 shows an A electrode 29 and a Y electrode 2 as an example.
A schematic diagram in which a positive voltage is applied to 3-1 and a negative voltage is applied to the X electrode 22-1 is shown. In this state, electrons 3
If the positive ions 4 remain, the positive wall charges 5 and the negative wall charges 6 are erased, and writing is hindered.
【００１４】図５は図２に示したＰＤＰに１枚の画を表
示するのに要する１フィールド期間の動作を示す図であ
り、１ＴＶフィールド期間４０は複数のサブフィールド
４１乃至４８に分割され、各サブフィールドは（b）に
示すように予備放電期間４９、発光セルを規定する書き
込み放電期間５０、発光表示期間５１からなる。波形５
２は従来技術による書き込み放電期間５０に於ける１本
のＡ電極に印加する電圧波形、波形５３はＸ電極に印加
する電圧波形、５４、５５はＹ電極のｉ番目と（ｉ＋
１）番目に印加する電圧波形であり、それぞれの電圧を
Ｖ０，Ｖ１，Ｖ２（Ｖ）とする。FIG. 5 is a diagram showing the operation of one field period required to display one image on the PDP shown in FIG. 2. One TV field period 40 is divided into a plurality of subfields 41 to 48. Each subfield includes a preliminary discharge period 49, a write discharge period 50 for defining a light emitting cell, and a light emitting display period 51 as shown in FIG. Waveform 5
2 is a voltage waveform applied to one A electrode during a writing discharge period 50 according to the prior art, waveform 53 is a voltage waveform applied to the X electrode, and 54 and 55 are the i-th and (i +
1) This is a voltage waveform to be applied first, and respective voltages are V0, V1, and V2 (V).
【００１５】図５より、Ｙ電極のｉ行目にスキャンパル
ス５６が印加された時、Ａ電極２９との交点に位置する
セルで書き込み放電が起こる。From FIG. 5, when a scan pulse 56 is applied to the i-th row of the Y electrode, a write discharge occurs in a cell located at the intersection with the A electrode 29.
【００１６】又、Ｙ電極のｉ行目にスキャンパルス５６
が印加された時、Ａ電極２９がグランド電位であれば書
き込み放電は起こらず、そのセルは非発光セルとなる。Also, the scan pulse 56 on the i-th row of the Y electrode
Is applied, if the A electrode 29 is at the ground potential, no write discharge occurs, and the cell becomes a non-light emitting cell.
【００１７】このように、書き込み放電期間５０に於い
てＹ電極にはスキャンパルスが１回印加され、Ａ電極２
９にはスキャンパルスに対応して発光セルではＶ０、非
発光セルではグランド電位となる。As described above, the scan pulse is applied once to the Y electrode during the write discharge period 50, and the A electrode 2
Reference numeral 9 indicates V0 in the light emitting cell and ground potential in the non-light emitting cell in response to the scan pulse.
【００１８】以上、本発明を適用するＰＤＰ構成の一例
を示した。An example of the PDP configuration to which the present invention is applied has been described above.
【００１９】図１は本発明の実施例を示した図であり、
放電終了後に於ける荷電粒子の様子を表している。図１
中で１は準安定Ｘｅ原子Ｘｅ*、２は中性ガス分子又は
原子、３は電子、４は正イオンである。又、Ｘｅ*１、
電子３より伸びる矢印は、各々の粒子の運動方向を表し
ている。FIG. 1 is a diagram showing an embodiment of the present invention.
The state of charged particles after the end of discharge is shown. FIG.
1 is a metastable Xe atom Xe *, 2 is a neutral gas molecule or atom, 3 is an electron, and 4 is a positive ion. Also, Xe * 1,
Arrows extending from the electrons 3 indicate the direction of movement of each particle.
【００２０】放電終了後の原子、電子の状態について、
一般的なＰＤＰのガス組成であるＸｅ、Ｎｅ混合ガスの
場合を用いて説明する。一例として、ガス圧は３００Ｔ
ｏｒｒ、Ｘｅ分圧は約１８Ｔｏｒｒを仮定する。プラズ
マ中で、多数のＮｅは準安定状態Ｎｅ*あるいは正イオ
ンＮｅ+として存在する。同様に多くのＸｅもＸｅ*ある
いはＸｅ+として存在している。そして、Ｎｅ+は０.３
３μｓ、 Ｎｅ*は０.０２３〜０.０７８μｓで内部エネ
ルギーをＸｅ+与える。さらに、このＸｅ+は０.１μｓ
程度でほとんどＸ電極２２-１乃至２２-２、 Ｙ電極２
３-１乃至２３-２、 Ａ電極２９に吸収され、一部のＸ
ｅ+は電子と再結合してＸｅ**あるいはＸｅ*となる。電
子は、１００Ｖ程度の電圧を印加すれば、ｎｓ以下のオ
ーダーで電極に吸収される。Regarding the state of atoms and electrons after the discharge is completed,
Description will be made using a case of a mixed gas of Xe and Ne which is a general PDP gas composition. As an example, the gas pressure is 300T
The orr and Xe partial pressures are assumed to be about 18 Torr. In the plasma, a large number of Ne exists as a metastable state Ne * or a positive ion Ne +. Similarly, many Xe also exist as Xe * or Xe +. And Ne + is 0.3
3 μs, Ne * gives internal energy Xe + in 0.023 to 0.078 μs. Further, this Xe + is 0.1 μs
X electrodes 22-1 to 22-2, Y electrodes 2
3-1 to 23-2, absorbed by the A electrode 29 and a part of X
e + is recombined with an electron to become Xe ** or Xe *. Electrons are absorbed by the electrodes in the order of ns or less when a voltage of about 100 V is applied.
【００２１】次に、このような寿命を持つ粒子がＰＤＰ
の駆動に影響するかどうかを調べるために、ＰＤＰにお
ける放電サイクルについて説明する。図５に示したよう
にＰＤＰでは１ＴＶフィールド４０（１/６０ｓ＝１６.
７ｍｓ）を複数の異なる発光回数を持つサブフィールド
４１乃至４８に分割することによって階調を表現する。
そして、前述したように各サブフィールドは予備放電期
間４９、書き込み放電期間５０、発光表示期間５１をも
つ。図５のようにサブフィールドを８つに分割したとき
には、予備放電期間４９と書き込み放電期間５０を合わ
せた時間は約１.８ｍｓであり、実際に発光している発
光表示期間５１は短くとも約１０μｓ以上である。従っ
て、前述した１μｓ以下の現象は放電に影響を与えな
い。Next, particles having such a long life are PDPs.
A discharge cycle in a PDP will be described in order to determine whether or not it affects the driving of the PDP. As shown in FIG. 5, in the PDP, one TV field 40 (1 / 60s = 16.
7 ms) is divided into a plurality of subfields 41 to 48 having different numbers of times of light emission to express gradation.
As described above, each subfield has a preliminary discharge period 49, a write discharge period 50, and a light emission display period 51. When the sub-field is divided into eight as shown in FIG. 5, the total time of the preliminary discharge period 49 and the write discharge period 50 is about 1.8 ms, and the light emitting display period 51 that is actually emitting light is at least about 1.8 ms. 10 μs or more. Therefore, the above-mentioned phenomenon of 1 μs or less does not affect the discharge.
【００２２】しかし、Ｘｅ*の寿命は約１.８５ｍｓと非
常に長く、また中性粒子であるため予備放電期間４９で
消去することもできない。さらに、Ｘｅ**も０.０１７
〜０.０５５μｓでＸｅ*になるため、投入されたエネル
ギーはＸｅ+がＸ電極２２-１乃至２２-２、Ｙ電極２３-
１乃至２３-２、Ａ電極２９に吸収された分を除くと、
最終的にＸｅ*に集中する。また、 Ｘｅ*は電子による
直接励起によっても多数生成されているのでその数は非
常に多い。その結果、Ｘｅ*は図１に示すようにＭｇＯ
保護層２７に衝突し、２次電子を放出してしまう。この
２次電子は、放電には至らないまでも、中性粒子と衝突
する事によって荷電粒子（電子、イオン）を増加させる
可能性もある。こうして、放電終了後に生じる荷電粒子
が予備放電期間４９や書き込み放電期間５０に形成しよ
うとしている壁電荷を消去する。However, Xe * has a very long lifetime of about 1.85 ms, and cannot be erased in the preliminary discharge period 49 because it is a neutral particle. Furthermore, Xe ** is also 0.017
Since Xe * becomes Xe * in about 0.055 μs, Xe + is applied to X electrodes 22-1 to 22-2 and Y electrode 23-.
1 to 23-2, excluding the amount absorbed by the A electrode 29,
Finally concentrate on Xe *. Further, since a large number of Xe * are also generated by direct excitation by electrons, the number is very large. As a result, as shown in FIG.
It collides with the protective layer 27 and emits secondary electrons. These secondary electrons may increase charged particles (electrons and ions) by colliding with neutral particles even if they do not lead to discharge. In this way, the charged particles generated after the end of the discharge erase the wall charges which are to be formed in the preliminary discharge period 49 and the write discharge period 50.
【００２３】こうした問題の対策として、Ｘｅ*より低
いエネルギー準位をもった安定化ガスを利用する。すな
わち、Ｘｅ*のエネルギーを安定化ガスに与え、Ｘｅ*の
失活を促すのである。安定化ガスは分子なので低エネル
ギー準位を持ち、ＭｇＯ界面の仕事関数以下にその内部
エネルギー下げることが可能であり、２次電子の放出が
低減できる。Ｘｅ*の準安定準位のエネルギーは、低い
ほうからＥＭ１=８.３２ｅＶとＥＭ２=９.４５ｅＶであ
る。従って、安定化ガスの特性としては、ＥＭ２又はＥ
Ｍ１以下の電子エネルギー準位を有していることが必要
である。As a measure against such a problem, a stabilizing gas having an energy level lower than Xe * is used. That is, the energy of Xe * is given to the stabilizing gas to promote the deactivation of Xe *. Since the stabilizing gas is a molecule, it has a low energy level, its internal energy can be reduced below the work function of the MgO interface, and the emission of secondary electrons can be reduced. The energy of the metastable level of Xe * is EM1 = 8.32 eV and EM2 = 9.45 eV from the lowest. Therefore, the characteristics of the stabilizing gas are EM2 or E
It is necessary to have an electron energy level of M1 or less.
【００２４】ここで、プラズマを発生させるためのガス
に対する、該安定化ガスの混合比に関して、プラズマを
発生させるためのガスとしてＮｅ、Ｘｅ混合ガスを用
い、安定化ガスにＯ２を用いた例について示す。上記例
の実験結果によると、Ｏ２を０.１％以上混合した際に
効率が非常に悪くなるという結果が得られている。この
原因はＮｅまたはＸｅからＯ２へのエネルギーの失活が
大きすぎるためであると考えられる。逆に、０.１％以
下の混合比において、効率の大きな減少は見ることがで
きなかった。従ってＮｅ、Ｘｅ混合ガスにＯ２を添加し
た場合、 Ｏ２は０.１％程度の混合率が最善である。し
かし、混合の精度等を考慮した場合、０.０１％程度に
抑えていた方がさらに実用的である。Here, regarding the mixing ratio of the stabilizing gas to the gas for generating plasma, an example in which a mixed gas of Ne and Xe is used as a gas for generating plasma and O 2 is used as a stabilizing gas is described. Show. According to the experimental results of the above example, the result is that the efficiency becomes very poor when O2 is mixed at 0.1% or more. This is considered to be due to excessive deactivation of energy from Ne or Xe to O2. Conversely, no significant reduction in efficiency could be seen at mixing ratios below 0.1%. Therefore, when O2 is added to the mixed gas of Ne and Xe, the best mixing ratio of O2 is about 0.1%. However, in consideration of the mixing accuracy and the like, it is more practical to keep the mixing rate at about 0.01%.
【００２５】上記内容は紫外線を発生させるためのガ
ス、ベースとなるガス及び安定化ガスに他の元素や複数
の元素を用いた場合にもほぼ同様とみなすことが可能で
ある。The above description can be considered substantially the same when other elements or a plurality of elements are used for the gas for generating ultraviolet light, the base gas, and the stabilizing gas.
【００２６】[0026]
【発明の効果】本発明を適用することによって電場では
制御する事が不可能である励起Ｘｅ原子の失活を促すこ
とが可能となり、該励起Ｘｅ原子により生成される２次
電子を抑制し、誤放電の低減が実現できる。By applying the present invention, it becomes possible to promote the deactivation of excited Xe atoms, which cannot be controlled by an electric field, thereby suppressing the secondary electrons generated by the excited Xe atoms, False discharge can be reduced.
【図１】本発明の実施例を示した図FIG. 1 shows an embodiment of the present invention.
【図２】本発明のプラズマディスプレイパネルの構造の
一部を示す分解斜視図FIG. 2 is an exploded perspective view showing a part of the structure of the plasma display panel of the present invention.
【図３】図２中の矢印Ｄ１の方向から見たプラズマディ
スプレイパネルの断面図FIG. 3 is a cross-sectional view of the plasma display panel viewed from a direction of an arrow D1 in FIG. 2;
【図４】図２中の矢印Ｄ２の方向から見たプラズマディ
スプレイパネルの断面図FIG. 4 is a cross-sectional view of the plasma display panel viewed from the direction of arrow D2 in FIG.
【図５】１枚の画を構成する１フィールド期間の動作を
示した図FIG. 5 is a diagram showing an operation in one field period forming one image;
１…準安定Ｘｅ原子 ２…中性原子又は分子 ３…電子 ４…正イオン ５…正壁電荷 ６…負壁電荷 ２１…前面ガラス基板 ２２-１乃至２２-２…Ｘ電極 ２３-１乃至２３-４８０…Ｙ電極 ２４-１乃至２４-２…Ｘバス電極 ２５-１乃至２５-２…Ｙバス電極 ２６…誘電体 ２７…保護層 ２８…背面ガラス基板 ２９…Ａ電極 ３０…誘電体 ３１…隔壁 ３２…蛍光体 ３３…放電空間 ４０…１ＴＶフィールド ４１乃至４８、４１-１乃至４８-１、４１-２乃至４８-
２…サブフィールド ４９、４９-１、４９-２…予備放電期間 ５０、５０-１、５０-２…書き込み放電期間 ５１…発光表示期間 ５２…１本のＡ電極に印加する電圧波形 ５３…Ｘ電極に印加する電圧波形 ５４…Ｙ電極のｉ番目に印加する電圧波形 ５５…Ｙ電極のｉ＋１番目に印加する電圧波形 ５６…Ｙ電極のｉ行目に印加されるスキャンパルス ５７…Ｙ電極のｉ＋１行目に印加されるスキャンパルス ６０…放電電極 ６１…誘電体 ６２…放電空間DESCRIPTION OF SYMBOLS 1 ... Metastable Xe atom 2 ... Neutral atom or molecule 3 ... Electron 4 ... Positive ion 5 ... Positive wall charge 6 ... Negative wall charge 21 ... Front glass substrate 22-1 to 22-2 ... X electrode 23-1 to 23 -480 ... Y electrode 24-1 to 24-2 ... X bus electrode 25-1 to 25-2 ... Y bus electrode 26 ... Dielectric 27 ... Protective layer 28 ... Back glass substrate 29 ... A electrode 30 ... Dielectric 31 ... Partition wall 32 ... Phosphor 33 ... Discharge space 40 ... 1 TV field 41 to 48, 41-1 to 48-1, 41-2 to 48-
2 Subfield 49, 49-1, 49-2 Preliminary discharge period 50, 50-1, 50-2 Write discharge period 51 Light emission display period 52 Voltage waveform applied to one A electrode 53 X Voltage waveform applied to the electrode 54... Voltage waveform applied to the i-th electrode of the Y electrode 55. Voltage waveform applied to the i + 1-th electrode of the Y electrode 56. Scan pulse applied to the i-th row of the Y electrode 57. Scan pulse applied to the row 60: Discharge electrode 61: Dielectric 62: Discharge space
───────────────────────────────────────────────────── フロントページの続き (72)発明者 水田 尊久 東京都千代田区神田駿河台四丁目６番地株 式会社日立製作所家電・情報メディア事業 本部内 (72)発明者 湯原 章綱 神奈川県横浜市戸塚区吉田町292番地株式 会社日立製作所マルチメディアシステム開 発本部内 (72)発明者 石垣 正治 東京都千代田区神田駿河台四丁目６番地株 式会社日立製作所家電・情報メディア事業 本部内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takahisa Mizuta 4-6-6 Kanda Surugadai, Chiyoda-ku, Tokyo Hitachi, Ltd. Home Appliances and Information Media Business Unit (72) Inventor Akinori Yuhara Totsuka, Yokohama-shi, Kanagawa 292, Yoshida-cho, Ward Hitachi, Ltd. Multimedia Systems Development Headquarters (72) Inventor Shoji Ishigaki 4-6, Kanda Surugadai, Chiyoda-ku, Tokyo Stock Company Hitachi, Ltd. Home Appliance and Information Media Business Headquarters
Claims (7)
により紫外線を発生させる手段と、該紫外線により可視
光を発生させる手段を具備し、更に該プラズマを発生さ
せるためのガスを少なくとも構成要素の一部としたプラ
ズマディスプレイ装置に於いて、該プラズマを発生させ
るガスの少なくとも一部として該紫外線を発生させるガ
ス（原子又は分子）を含み、該紫外線を発生させるガス
の準安定準位のエネルギーを低い方から順にE M1,E M2
とし（E M1＜E M2）、 該EM2より低いエネルギーの準位
を有するガス（原子又は分子、以下安定化ガスと呼ぶ）
を該プラズマを発生させるガスに添加することを特徴と
するプラズマディスプレイ装置。1. A device for generating plasma, means for generating ultraviolet light by the plasma, and means for generating visible light by the ultraviolet light, and further comprising a gas for generating the plasma at least as one of the constituent elements. In the plasma display device, the gas (atom or molecule) for generating the ultraviolet ray is included as at least a part of the gas for generating the plasma, and the energy of the metastable level of the gas for generating the ultraviolet ray is reduced. E M1, E M2
(E M1 <E M2), a gas having a lower energy level than EM2 (atom or molecule, hereinafter referred to as stabilizing gas)
Is added to a gas for generating the plasma.
置に於いて、該EM1より低いエネルギーの準位を有する
ガス（原子又は分子、以下安定化ガスと呼ぶ）を該プラ
ズマを発生させるガスに添加することを特徴とするプラ
ズマディスプレイ装置。2. The plasma display apparatus according to claim 1, wherein a gas having a lower energy level than EM1 (atom or molecule, hereinafter referred to as a stabilizing gas) is added to the gas for generating the plasma. A plasma display device.
置に於いて、該紫外線を発生させるガスがXeであること
を特徴とするプラズマディスプレイ装置。3. The plasma display device according to claim 1, wherein the gas for generating the ultraviolet rays is Xe.
置に於いて、 該安定化ガスがCO2,N2,O2,CF4,H2のいづれか又はこれら
の混合ガスであることを特徴とするプラズマディスプレ
イ装置。4. The plasma display device according to claim 1, wherein said stabilizing gas is any one of CO2, N2, O2, CF4, H2, or a mixed gas thereof.
置に於いて、 該安定化ガスがO2であり、O2の圧力（分圧）が全圧の
０.１％以下であることを特徴とするプラズマディスプ
レイ装置。5. The plasma display device according to claim 4, wherein the stabilizing gas is O2, and the pressure (partial pressure) of O2 is 0.1% or less of the total pressure. Plasma display device.
置に於いて、 該安定化ガスがO2であり、O2の圧力（分圧）が全圧の
０.０１％以下であることを特徴とするプラズマディス
プレイ装置。6. The plasma display device according to claim 4, wherein the stabilizing gas is O2, and the pressure (partial pressure) of O2 is 0.01% or less of the total pressure. Plasma display device.
置に於いて、 該安定化ガスがCO2であり、CO2の圧力（分圧）が全圧の
０.１％以下であることを特徴とするプラズマディスプ
レイ装置。7. The plasma display apparatus according to claim 4, wherein the stabilizing gas is CO2, and the pressure (partial pressure) of CO2 is 0.1% or less of the total pressure. Plasma display device.
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|---|---|---|---|
| JP27841797A JP3760593B2 (en) | 1997-10-13 | 1997-10-13 | Plasma display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27841797A JP3760593B2 (en) | 1997-10-13 | 1997-10-13 | Plasma display device |
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|---|---|
| JPH11120920A true JPH11120920A (en) | 1999-04-30 |
| JP3760593B2 JP3760593B2 (en) | 2006-03-29 |
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ID=17597059
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27841797A Expired - Fee Related JP3760593B2 (en) | 1997-10-13 | 1997-10-13 | Plasma display device |
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