JP3472415B2 - Plasma display panel - Google Patents

Plasma display panel

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Publication number
JP3472415B2
JP3472415B2 JP23202596A JP23202596A JP3472415B2 JP 3472415 B2 JP3472415 B2 JP 3472415B2 JP 23202596 A JP23202596 A JP 23202596A JP 23202596 A JP23202596 A JP 23202596A JP 3472415 B2 JP3472415 B2 JP 3472415B2
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JP
Japan
Prior art keywords
partition
partition wall
pdp
shape
discharge
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JP23202596A
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Japanese (ja)
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JPH1074458A (en
Inventor
健一 米山
清浩 逆瀬川
雅史 加藤
哲也 前田
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Kyocera Corp
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Kyocera Corp
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Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、高精度かつ安価な
薄型の大画面用カラー表示装置等に用いられるプラズマ
ディスプレイパネル用隔壁に関するものである。 【0002】 【従来の技術】薄型の大画面用カラー表示装置等に用い
られるプラズマディスプレイパネル(以下、PDPと略
記する)は、微小な放電表示セルと呼ばれる隔壁に囲ま
れた空間に、対向する電極群を設け、前記空間に希ガス
等の放電可能なガスを気密封入した構造を成しており、
前記対向する電極間に電圧を選択的に印加し、放電によ
りプラズマを発生させ、該プラズマにより放電表示セル
内の蛍光体を発光させて画面の発光素子として利用する
ものである。 【0003】一般に、前記PDPの放電表示セルを構成
する隔壁の製造方法としては、印刷積層法やサンドブラ
スト法、フォトリソグラフィ法が知られている。 【0004】前記印刷積層法は、隔壁材料のペーストを
用いて厚膜印刷法により放電表示セルの所定形状をパタ
ーンとして絶縁板上に印刷形成するもので、1回の印刷
で形成できる膜の厚さが約10〜15μm程度であるこ
とから、印刷、乾燥を繰り返して約100〜200μm
程度の高さを必要とする放電表示セルの隔壁を形成する
ことが特開平2−213020号公報に提案されてい
る。 【0005】また、前記サンドブラスト法では、絶縁板
上にガラス層を形成し、該ガラス層に隔壁形状のレジス
トマスクを形成しておいて、サンドブラストにて隔壁以
外の部分のガラス層を除去するものが特開平4−259
728号公報で提案されている。 【0006】更に、前記フォトリソグラフィ法は、絶縁
板上の感光性樹脂層をパターンマスクを介して光や紫外
線等により露光後、現像して開口部を形成し、該開口部
に絶縁ペーストを埋め込み、隔壁を形成させるものが特
開平2−165539号公報等に提案されている。 【0007】 【発明が解決しようとする課題】しかしながら、前記印
刷積層法やサンドブラスト法、フォトリソグラフィ法で
形成された隔壁は、図3に示すようにプラズマディスプ
レイパネル12の表示面13の方向から見ると、隔壁1
4の幅が30〜100μm程度で、ストライプ状にほぼ
平行な直線状を成している。 【0008】従って、このように極めて幅の狭い細長い
隔壁を形成した場合、隔壁が高くなるほど、隔壁の配列
方向と直交する方向の隔壁の剛性が弱まるため、隔壁の
形成途中に、変形したり、或いは隔壁形成後のハンドリ
ング中に欠けたりする恐れが高く、その結果、隔壁の製
造歩留りを大幅に低下させることから、高精度で微細な
ピッチを有する、いわゆる高精細度化した放電表示セル
を多数設けた、例えば30インチ以上にも及ぶ大型のP
DP用等に好適な隔壁を、安価にかつ効率良く製造する
ことが困難であるという課題があった。 【0009】 【発明の目的】本発明は前記課題を解決するために成さ
れたもので、その目的は、PDPの放電表示セルを構成
する隔壁の変形や欠け等の形状欠陥を低減させて製造歩
留りを向上させ、生産性を高め、大画面化が容易で高精
細度化が実現できるPDP用の隔壁を提供することにあ
る。 【0010】 【課題を解決するための手段】本発明者等は前記課題に
鑑み鋭意検討した結果、隔壁の配列方向と直交する方向
の隔壁の剛性を高めるべく、隔壁の側面形状を発光放電
部を取り囲むように丸く形成することにより、隔壁の形
成途中で変形したり、或いは隔壁形成後のハンドリング
中に欠けたりすることを防止できることを見いだした。 【0011】即ち、本発明のPDP用隔壁は、PDPの
放電表示セルを構成する隔壁の側面形状を、少なくとも
PDPの表示面側から見て、発光放電部を取り囲むよう
に丸みを成すように形成したことを特徴とするものであ
り、とりわけ前記丸みが発光放電部の中心と考えられる
対向した主放電を行う電極の交差点を中心とする曲率半
径で30〜350μmの円弧状を成すことが最も望まし
いものである。 【0012】本発明における隔壁の側面形状は、少なく
ともPDPの表示面から見て隔壁の側面が発光放電部を
囲むように丸く形成されておれば良く、前記一対の絶縁
板と平行な断面の隔壁側面形状は曲線状でも放物線状で
もいずれでも良く、更に、前記隔壁の側面は一方の絶縁
板から他方の絶縁板にかけて丸く卵状に湾曲した曲面を
形成していても良い。 【0013】また、前記隔壁の側面が成す丸みは、放電
表示セルの大きさによって異なるが隔壁の靱性を向上さ
せて隔壁の変形や欠けを低減させるという点から、対向
した主放電を行う電極の交差点を中心とする曲率半径で
30〜350μmの円弧状が最も望ましいものである。 【0014】また、少なくともPDPの表示面側から見
て、隔壁側面が発光放電部を取り囲むような丸みを有す
る形状の隔壁を形成する方法としては、特に限定される
ものではなく種々の方法が適用でき、前記印刷積層法で
は、従来の厚膜印刷法に用いられるスクリーン製版の隔
壁形成パターンを、隔壁の側面が丸みを有する形状にし
て印刷積層すれば良い。 【0015】他方、サンドブラスト法でも、レジストマ
スク形状を従来の極めて細長いスリット形状より、放電
表示セルの大きさに合わせて隔壁の側面が丸く窪んだ形
状を周期的に形成できるような形状にすれば良い。 【0016】更に、フォトリソグラフィ法でも、パター
ンマスクを前記同様に放電表示セルの大きさに合わせて
隔壁の側面が丸く窪んだ形状を周期的に形成できるパタ
ーン形状にすれば良い。 【0017】また、前記隔壁形状を有する成形型に隔壁
材料を充填して絶縁板に転写する方法や、該隔壁形状に
打ち抜いた複数枚のグリーンシートを必要な高さまで積
層固着するグリーンシート積層法等も採用できる。 【0018】 【作用】本発明のPDP用隔壁によれば、放電表示セル
を構成する各隔壁の側面が、少なくともPDPの表示面
から見て、発光放電部を取り囲むように丸み形状を成し
ていることから、少なくとも隔壁の配列方向に隣接する
放電表示セルの境界を成す隔壁の幅を厚くすることがで
き、このために従来の極めて細長い断面形状のみから成
る隔壁よりも隔壁断面積を増大させることができ、隔壁
の配列方向と直交する方向に対する隔壁の剛性を高める
ことが可能となり、隔壁の変形や欠け等の形状欠陥を低
減して、製造歩留りが向上し生産性が向上することにな
る。 【0019】 【発明の実施の形態】以下、本発明のPDP用隔壁を実
施例に基づき詳細に説明する。 【0020】図1は、本発明のPDP用隔壁を有するP
DPの一実施例を示す斜視図であり、図2は図1のPD
Pを表示面から見た図である。 【0021】図1及び図2において、1は対向する一対
の絶縁板2と、配列された隔壁3と複数の電極4から成
るPDPである。 【0022】図において、本発明のPDP1は、対向す
る絶縁板2の間に複数の電極4が設けられており、電極
4と絶縁板2の対向する空間を仕切る隔壁3とで多数の
放電表示セル5が構成されており、PDPの表示面6か
ら見て、隔壁3が対向した主放電を行う電極の交差点1
0を中心とすると考えられる発光放電部7を取り囲むよ
うにその側面8が丸み9を有して配列されており、特に
丸み9は対向した主放電を行う電極の交差点10を中心
とする曲率半径11を有する円弧状を成すことが望まし
いものである。 【0023】本発明の絶縁板としては、ソーダライムガ
ラスや低ソーダガラス、鉛アルカリケイ酸ガラス、ホウ
ケイ酸塩ガラス等の透明絶縁基板を用いることができ
る。 【0024】また、電極は、Ni、Al等の導体金属、
あるいはこれらの合金、または前記導体金属やその合金
に少量のガラスを混合した導電性ペーストを用いて形成
されているが、表示面側の絶縁板、即ち前面板には酸化
インジウムや酸化スズを蒸着した透明電極が形成されて
いる。 【0025】尚、気密封入する発光ガスには、XeやH
e−Xe、Ne−Xe等を主成分として用いることがで
き、10〜600Torr封入して放電表示セルを形成
させることができる。 【0026】前記放電表示セルを構成する隔壁の材料と
しては、焼成後にガラス質と成り、気密性を保持できる
ガラス材料であればいずれでも良く、例えば、低融点ガ
ラス粉末と酸化物系セラミック粉末の混合物を含有した
ペーストや泥漿状の組成物が好適に用いられる。 【0027】また、隔壁の側面は、少なくともPDPの
表示面から見た時、即ち、対向する絶縁板と平行な隔壁
の側面形状が、放電表示セルの発光放電部の中心方向に
凹状に丸く形成されておれば良く、製造のし易さからは
前記側面形状は一定の曲率半径を有する曲面で形成する
のが望ましい。 【0028】尚、前記発光放電部の中心は、具体的には
PDPの表示面から見た時、対向した一対の絶縁板間に
設けた対向する主放電を行う電極の交差点に該当すると
考えられる。 【0029】また、前記曲率半径は放電表示セルの大き
さによって異なるが、焼成後に30〜350μm程度を
有すれば良く、例えば、絶縁板上の隔壁形成間隔、即ち
ピッチが150μmの場合には、隔壁の側面の曲率半径
は30μm程度が望ましく、一方、前記ピッチが800
μmの場合には曲率半径は350μm程度が良好であ
る。 【0030】更に、隔壁の配列方向と直交する方向の隔
壁の剛性は、焼成前では少なくとも隔壁の成形時や、隔
壁間の洗浄作業時等の工程で変形したり、欠けたりしな
い程度であれば良く、焼成後はハンドリング時の振動
や、液体洗浄あるいはエアー洗浄等の各種洗浄作業の工
程に耐える程度であれば良い。 【0031】 【実施例】次に、本発明のPDP用隔壁を以下のように
して評価した。 【0032】(実施例1)先ず、厚さ2mmの30イン
チサイズのソーダライムガラスから成る絶縁板上に、厚
膜印刷法によりNiを主成分とする電極ペーストを用い
て幅50μmの電極をストライプ状に220μmピッチ
で全面に形成して電極付き絶縁板を作製した。 【0033】次に、前記電極付き絶縁板に隔壁の側面形
状が円弧状の凹部を成す曲率半径約75μmの周期的な
パターンを有する隔壁形成用スクリーン製版を位置決め
した後、該スクリーン製版を通して隔壁材料のペースト
を直下の絶縁板に印刷塗布した後、乾燥させて隔壁の第
一層目を得た。 【0034】その後、印刷の都度、前記スクリーン製版
を位置決めし直し、前記同様にして印刷、乾燥の工程を
8回繰り返して、所望の高さを有する隔壁の成形体を作
製した。 【0035】得られた隔壁の成形体は、その幅の最小値
が40±5μmで、その幅の最大値、即ち隔壁の配列方
向に隣接する放電表示セルの境界部の隔壁の幅は150
±7μmであり、隔壁が形成する曲率半径は80±5μ
mであった。 【0036】次いで、前記隔壁成形体を被着した電極付
き絶縁板を、所定の温度に保持して脱バインダーした
後、各材料主成分により焼成雰囲気を適宜変更し、55
0〜580℃の温度で1時間焼成して絶縁板と一体化し
た評価用のPDP用隔壁を作製した。 【0037】評価は、先ず、焼成前の隔壁成形体を有す
る電極付き絶縁板を用い、該絶縁板の隔壁側を絶縁板か
ら100mmの高さに配置した1.0気圧の空気を吹き
出す一列のエアーシャワーの下を通過させた後、絶縁板
の中央と4端部の合計5カ所の隔壁について単位面積1
cm2 当たりの隔壁の変形や欠け等の欠陥の発生数をカ
ウントして隔壁の剛性を比較評価した。 【0038】一方、PDP用隔壁を一体化した電極付き
絶縁板の焼結体に対しては、5.0気圧の空気を吹き出
す一列のエアーシャワーの下を通過させ、焼成前の評価
と同様にして隔壁の剛性を比較評価した。 【0039】尚、隔壁の幅を約40μmと一定値に設定
したストライプ状のパターンを有するスクリーン製版を
用いて隔壁を作製したものを比較例とした。 【0040】以上の結果、比較例では単位面積当たりの
欠陥数が、絶縁板の中央部では11個、右上端部で12
個、右下端部で9個、左上端部及び左下端部で各10個
と、隔壁の剛性が低いのに対して、本発明のPDP用隔
壁ではいずれの部分からも変形や欠け等の欠陥は認めら
れず、隔壁の剛性が高いことが確認できた。 【0041】(実施例2)実施例1と同一の電極材料を
用い、600μmのピッチで形成した電極付き絶縁板上
に、ガラスペーストを用いて厚さ180〜200μmの
ガラス層を形成し、乾燥させた後、この表面に実施例1
と同様に隔壁の外周形状が円弧状の凹部を成す曲率半径
が約200μmの周期的なパターンを有するレジストマ
スクを被覆し、切削粉としてガラスビーズを用い、噴出
圧力を1.5〜3.0kg/cm2程度に設定したサン
ドブラストにて隔壁以外の部分のガラス層を除去した。 【0042】得られた隔壁の成形体は、その幅の最小値
が110±4μmで、その幅の最大値、即ち隔壁の配列
方向に隣接する放電表示セルの境界部の隔壁の幅は40
0±5μmであり、隔壁の側面が成す曲率半径は200
±3μmであった。 【0043】次いで、実施例1と同一条件にて焼結一体
化した評価用のPDP用隔壁を得、実施例1と同様にし
て評価した。 【0044】その結果、実施例1と同様、本発明のPD
P用隔壁ではいずれの部分からも欠陥は認められず、隔
壁の剛性が高いことが確認できた。 【0045】(実施例3)実施例1と同様にして作製し
た電極付き絶縁板上に、紫外線感光性樹脂層を被着形成
した後、隔壁の外周形状が、長径が170μm、短径が
85μm相当の楕円状の凹部を成す周期的なパターンを
有した露光パターンマスクを介して前記紫外線感光性樹
脂層に紫外線を照射して露光した後、現像して開口部を
形成させ、該開口部に隔壁形成用ガラスペーストをコー
ルコーターにて充填し、次いで120℃の温度で乾燥し
て隔壁成形体を形成した。 【0046】得られた隔壁の成形体は、その幅の最小値
が50±2μmで、その幅の最大値、即ち隔壁の配列方
向に隣接する放電表示セルの境界部の隔壁の幅は150
±3μmであり、隔壁の側面が成す楕円状の曲率半径は
85〜170μmの範囲内であった。 【0047】次いで、実施例1と同一条件にて焼結一体
化した評価用のPDP用隔壁を作製するとともに、実施
例1と同様にして評価した。 【0048】その結果、実施例1と同様、本発明のPD
P用隔壁ではいずれの部分からも欠陥は認められず、隔
壁の剛性は充分であることが確認できた。 【0049】尚、前記各実施例では、印刷積層法及びサ
ンドブラスト法、フォトリソグラフィ法で作製した隔壁
について具体的に説明したが、本発明は前記詳述した実
施例に何等限定されるものではなく、隔壁形状はPDP
の表示面から見て、該隔壁が各放電表示セルの発光放電
部を囲むように凹状に曲線を成していれば良く、その形
状はいかなるものでも良いことは言うまでもない。 【0050】 【発明の効果】叙上の如く、本発明のPDP用隔壁は、
PDPの表示面から見て各放電表示セルの発光放電部を
囲むように凹状の丸みを成していることから、隔壁の配
列方向に隣接する放電表示セルの境界部の隔壁の幅が広
くなり、隔壁断面積を増大させることができ、隔壁の配
列方向と直交する方向の隔壁の剛性が高まり、隔壁の変
形や欠け等の形状欠陥の発生を防止でき、PDP用隔壁
の高い製造歩留りが実現でき、生産性が向上するととも
に、前述の如き丸みを成すことは、発光放電部と蛍光体
との距離が均一となることから発光効率の高い、高精細
度化が可能なPDP用隔壁を容易に得ることが可能とな
る。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition wall for a plasma display panel used for a high-precision, inexpensive, thin, large-screen color display device or the like. 2. Description of the Related Art A plasma display panel (hereinafter abbreviated as PDP) used for a thin large-screen color display device or the like is opposed to a space surrounded by partition walls called minute discharge display cells. An electrode group is provided, which has a structure in which a dischargeable gas such as a rare gas is hermetically sealed in the space,
A voltage is selectively applied between the opposing electrodes to generate plasma by discharge, and the plasma causes a phosphor in a discharge display cell to emit light, which is used as a light emitting element of a screen. In general, a printing lamination method, a sand blasting method, and a photolithography method are known as a method of manufacturing the partition wall constituting the discharge display cell of the PDP. In the printing lamination method, a predetermined shape of a discharge display cell is printed and formed on an insulating plate by a thick film printing method using a paste of a partition wall material. Is about 10 to 15 μm, printing and drying are repeated to about 100 to 200 μm
Japanese Patent Application Laid-Open No. 2-213020 proposes formation of a partition wall of a discharge display cell requiring a height of about a certain degree. In the above sandblasting method, a glass layer is formed on an insulating plate, a resist mask having a partition shape is formed on the glass layer, and a portion of the glass layer other than the partition is removed by sandblasting. Is disclosed in JP-A-4-259.
No. 728. Further, in the photolithography method, an opening is formed by exposing a photosensitive resin layer on an insulating plate to light or ultraviolet light through a pattern mask, and then developing the opening, and embedding an insulating paste in the opening. A method for forming a partition wall has been proposed in Japanese Patent Application Laid-Open No. 2-165538. [0007] However, the partition walls formed by the printing lamination method, the sandblasting method, or the photolithography method are viewed from the direction of the display surface 13 of the plasma display panel 12 as shown in FIG. And the partition 1
4 have a width of about 30 to 100 μm and form a straight line substantially parallel to a stripe. Accordingly, in the case of forming such a narrow and narrow partition, the rigidity of the partition in the direction perpendicular to the direction in which the partitions are arranged becomes weaker as the partition becomes higher. Or, there is a high possibility that chipping occurs during handling after the formation of the partition walls, and as a result, the production yield of the partition walls is greatly reduced. Provided, for example, a large P of 30 inches or more
There has been a problem that it is difficult to efficiently and inexpensively manufacture partition walls suitable for DP and the like. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to manufacture a PDP by reducing shape defects such as deformation and chipping of a partition wall constituting a discharge display cell of a PDP. It is an object of the present invention to provide a partition wall for a PDP which can improve the yield, increase the productivity, easily realize a large screen, and realize a high definition. The present inventors have made intensive studies in view of the above-mentioned problems, and as a result, in order to increase the rigidity of the partitions in the direction orthogonal to the arrangement direction of the partitions, the shape of the side surfaces of the partitions has been changed to a light emitting discharge portion. It has been found that, by forming a round shape so as to surround the partition wall, deformation during the formation of the partition wall or chipping during handling after formation of the partition wall can be prevented. That is, the partition wall for PDP of the present invention is formed such that the side wall shape of the partition wall constituting the discharge display cell of the PDP is rounded so as to surround the light emitting / discharging portion when viewed at least from the display surface side of the PDP. In particular, it is most preferable that the roundness has an arc shape of 30 to 350 μm with a radius of curvature centered on the intersection of electrodes facing each other, which is considered to be the center of the light emitting discharge portion and performing the main discharge. Things. The side wall shape of the partition wall in the present invention may be at least a round shape so that the side wall of the partition wall surrounds the light emitting / discharging portion when viewed from the display surface of the PDP, and the partition wall has a cross section parallel to the pair of insulating plates. The side surface shape may be either a curved shape or a parabolic shape, and the side surface of the partition may form a round and egg-shaped curved surface from one insulating plate to the other insulating plate. The roundness formed by the side surfaces of the barrier ribs varies depending on the size of the discharge display cell. However, since the toughness of the barrier ribs is improved to reduce the deformation and chipping of the barrier ribs, the opposing electrodes which perform the main discharge are used. An arc shape having a radius of curvature of 30 to 350 μm around the intersection is most desirable. The method of forming the partition wall having a rounded shape such that the side wall of the partition wall surrounds the light emitting / discharging portion when viewed at least from the display surface side of the PDP is not particularly limited, and various methods are applicable. In the printing and laminating method, a partition forming pattern of a screen plate used in a conventional thick film printing method may be printed and laminated in such a manner that the side wall of the partition has a round shape. On the other hand, even in the sandblasting method, if the resist mask shape is changed from a conventional extremely elongated slit shape to a shape in which the side surfaces of the partition walls can be periodically formed in a rounded concave shape in accordance with the size of the discharge display cell. good. Further, also in the photolithography method, the pattern mask may be formed in a pattern shape in which the side surface of the partition wall can be periodically formed in a round and concave shape in accordance with the size of the discharge display cell as described above. Also, a method of filling the molding material having the partition shape with a partition material and transferring the material to an insulating plate, and a green sheet laminating method of laminating and fixing a plurality of green sheets punched in the partition shape to a required height. Etc. can also be adopted. According to the partition wall for a PDP of the present invention, the side wall of each partition wall constituting the discharge display cell is formed in a round shape so as to surround the light emitting / discharging portion when viewed at least from the display surface of the PDP. Therefore, it is possible to increase the width of at least the partition wall that forms the boundary between the discharge display cells adjacent to each other in the arrangement direction of the partition wall, thereby increasing the cross-sectional area of the partition wall as compared with the conventional partition wall having only an extremely thin cross-sectional shape. It is possible to increase the rigidity of the partition walls in the direction orthogonal to the arrangement direction of the partition walls, reduce shape defects such as deformation and chipping of the partition walls, and improve manufacturing yield and productivity. . DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a partition wall for a PDP according to the present invention will be described in detail based on embodiments. FIG. 1 shows a PDP having a partition wall for a PDP of the present invention.
FIG. 2 is a perspective view showing an embodiment of the DP, and FIG.
It is the figure which looked at P from the display surface. In FIGS. 1 and 2, reference numeral 1 denotes a PDP comprising a pair of opposed insulating plates 2, arranged partitions 3 and a plurality of electrodes 4. In FIG. 1, a PDP 1 according to the present invention has a plurality of electrodes 4 provided between opposing insulating plates 2, and a large number of discharge displays are formed by the electrodes 4 and partition walls 3 which partition the opposing spaces of the insulating plates 2. A cell 5 is formed, and when viewed from the display surface 6 of the PDP, the intersection 1 of the electrode that performs the main discharge is opposed to the partition 3.
The side surface 8 is arranged so as to have a roundness 9 so as to surround the light emitting / discharging portion 7 which is considered to be centered on 0. In particular, the rounded portion 9 has a radius of curvature centered on the intersection 10 of the electrodes which perform the main discharge facing each other. It is desirable to form an arc shape having 11. As the insulating plate of the present invention, a transparent insulating substrate such as soda lime glass, low soda glass, lead alkali silicate glass, borosilicate glass and the like can be used. The electrode is made of a conductive metal such as Ni or Al,
Alternatively, these alloys, or the conductive metal or an alloy thereof is formed using a conductive paste obtained by mixing a small amount of glass with the conductive metal. Indium oxide or tin oxide is deposited on the display surface side insulating plate, that is, the front plate. Transparent electrode is formed. The luminescent gas to be hermetically sealed is Xe or H
e-Xe, Ne-Xe, or the like can be used as a main component, and a discharge display cell can be formed by encapsulation at 10 to 600 Torr. The material of the partition walls constituting the discharge display cell may be any glass material which becomes vitreous after firing and can maintain airtightness. For example, a low melting glass powder and an oxide ceramic powder may be used. A paste or a slurry composition containing the mixture is suitably used. Further, the side wall of the partition wall is formed so as to be concave and round toward the center of the light emitting discharge portion of the discharge display cell, at least when viewed from the display surface of the PDP, that is, the side wall shape parallel to the opposing insulating plate. It is preferable that the side surface is formed by a curved surface having a constant radius of curvature from the viewpoint of ease of manufacture. The center of the light emitting / discharging portion, when viewed from the display surface of the PDP, is considered to correspond to an intersection of electrodes facing the main discharge provided between a pair of insulating plates facing each other. . The radius of curvature varies depending on the size of the discharge display cell, but may be about 30 to 350 μm after firing. For example, when the interval between partition walls on the insulating plate, that is, the pitch is 150 μm, The radius of curvature of the side surface of the partition is preferably about 30 μm, while the pitch is 800 μm.
In the case of μm, the radius of curvature is preferably about 350 μm. Further, the rigidity of the partition walls in the direction perpendicular to the direction in which the partition walls are arranged should be such that the partition walls are not deformed or chipped before firing at least at the time of forming the partition walls or at the time of cleaning work between the partition walls. After baking, it is sufficient that the baking can withstand vibration during handling and various cleaning processes such as liquid cleaning or air cleaning. Next, the partition walls for PDP of the present invention were evaluated as follows. (Embodiment 1) First, an electrode having a width of 50 μm was stripped on an insulating plate made of soda lime glass having a thickness of 2 mm and made of 30 inch size using an electrode paste containing Ni as a main component by a thick film printing method. In this manner, an insulating plate with electrodes was formed on the entire surface at a pitch of 220 μm. Next, after positioning a screen making plate for forming a partition having a periodic pattern with a curvature radius of about 75 μm in which the side wall of the partition forms an arc-shaped concave portion on the insulating plate with electrodes, the partition plate material is passed through the screen forming. Was paste-printed on the insulating plate immediately below, and then dried to obtain a first layer of partition walls. Thereafter, each time printing was performed, the screen plate was repositioned, and the steps of printing and drying were repeated eight times in the same manner as described above to produce a molded body of a partition having a desired height. The obtained partition wall molded body has a minimum width of 40 ± 5 μm and a maximum width of 150 μm, that is, the width of the partition at the boundary between the discharge display cells adjacent to each other in the arrangement direction of the partition.
± 7 μm, and the radius of curvature formed by the partition is 80 ± 5 μm
m. Next, after the insulating plate with the electrode on which the above-mentioned partition wall molded body is adhered is debindered while being maintained at a predetermined temperature, the firing atmosphere is appropriately changed according to the main components of each material.
The resultant was fired at a temperature of 0 to 580 ° C. for 1 hour to produce a PDP partition for evaluation integrated with the insulating plate. The evaluation was carried out by first using an insulating plate with electrodes having a molded partition wall before firing, and arranging the partition side of the insulating plate at a height of 100 mm from the insulating plate in a row of blowing air at 1.0 atm. After passing under the air shower, the unit area 1
The number of occurrences of defects such as deformation and chipping of the partition per cm 2 was counted to evaluate the rigidity of the partition comparatively. On the other hand, the sintered body of the insulating plate with the electrode in which the partition for PDP is integrated is passed under a row of air showers that blows air of 5.0 atm. Then, the rigidity of the partition wall was comparatively evaluated. A comparative example was prepared by using a screen plate having a stripe pattern in which the width of the partition was set to a constant value of about 40 μm. As a result, in the comparative example, the number of defects per unit area was 11 at the center of the insulating plate and 12 at the upper right end.
While the rigidity of the partition wall is low, such as 9 pieces at the lower right end and 10 pieces at the lower left and lower left ends, the PDP partition wall of the present invention has defects such as deformation and chipping from any part. Was not observed, and it was confirmed that the rigidity of the partition walls was high. Example 2 A glass layer having a thickness of 180 to 200 μm was formed using a glass paste on an insulating plate with electrodes formed at the pitch of 600 μm using the same electrode material as in Example 1, and dried. After that, Example 1 was applied to this surface.
Similarly to the above, a resist mask having a periodic pattern with a curvature radius of about 200 μm, in which the outer peripheral shape of the partition wall forms an arc-shaped concave portion, is coated with glass beads as cutting powder, and the ejection pressure is 1.5 to 3.0 kg. A portion of the glass layer other than the partition was removed by sandblasting set to about / cm 2 . The minimum value of the width of the obtained partition wall molded product is 110 ± 4 μm, and the maximum value of the width, that is, the width of the partition wall at the boundary between the discharge display cells adjacent to each other in the arrangement direction of the partition walls is 40 μm.
0 ± 5 μm, and the radius of curvature formed by the side wall of the partition is 200
± 3 μm. Next, a PDP partition wall for evaluation was sintered and integrated under the same conditions as in Example 1 and evaluated in the same manner as in Example 1. As a result, similar to the first embodiment, the PD of the present invention
No defect was observed from any part of the partition wall for P, and it was confirmed that the partition wall had high rigidity. Example 3 After a UV-sensitive resin layer was formed on an insulating plate with electrodes produced in the same manner as in Example 1, the outer peripheral shape of the partition walls was 170 μm in major axis and 85 μm in minor axis. After irradiating the ultraviolet-sensitive resin layer with an ultraviolet ray through an exposure pattern mask having a periodic pattern forming a considerable elliptical concave portion and exposing the ultraviolet-sensitive resin layer, development is performed to form an opening, and the opening is formed. The partition wall forming glass paste was filled with a call coater, and then dried at a temperature of 120 ° C. to form a partition wall molded body. The obtained partition wall molded product has a minimum width of 50 ± 2 μm and a maximum width of 150 μm, that is, the width of the partition at the boundary between the discharge display cells adjacent to each other in the arrangement direction of the partition.
± 3 μm, and the radius of curvature of the elliptical shape formed by the side surface of the partition wall was in the range of 85 to 170 μm. Next, a PDP partition wall for evaluation, which was sintered and integrated under the same conditions as in Example 1, was produced and evaluated in the same manner as in Example 1. As a result, similar to the first embodiment, the PD of the present invention
No defects were observed in any part of the partition wall for P, confirming that the rigidity of the partition wall was sufficient. In each of the above embodiments, the partition walls produced by the printing lamination method, the sand blast method, and the photolithography method have been specifically described. However, the present invention is not limited to the above-described detailed examples. , Partition shape is PDP
When viewed from the display surface, it is only necessary that the partition wall has a concave curve so as to surround the light-emitting discharge portion of each discharge display cell, and it goes without saying that the partition wall may have any shape. As described above, the partition wall for a PDP of the present invention comprises:
When viewed from the display surface of the PDP, since the concave shape is formed so as to surround the light-emitting discharge portion of each discharge display cell, the width of the partition wall at the boundary between adjacent discharge display cells in the arrangement direction of the partition walls increases. The partition wall cross-sectional area can be increased, the rigidity of the partition walls in the direction perpendicular to the arrangement direction of the partition walls is increased, and the occurrence of shape defects such as deformation and chipping of the partition walls can be prevented, thereby realizing a high production yield of PDP partition walls. In addition to improving the productivity and making the roundness as described above, the distance between the light emitting / discharging portion and the phosphor becomes uniform, so that a PDP partition having high luminous efficiency and high definition can be easily formed. Can be obtained.

【図面の簡単な説明】 【図1】本発明のPDP用隔壁を有するPDPの一実施
例を示す斜視図である。 【図2】図1のPDPを表示面から見た図である。 【図3】従来のPDP用隔壁を有するPDPを示す斜視
図である。 【符号の説明】 1 プラズマディスプレイパネル(PDP) 2 絶縁板 3 隔壁 4 電極 5 放電表示セル 6 表示面 7 発光放電部 8 隔壁の側面 9 丸み 10 主放電を行う電極の交差点 11 曲率半径
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing one embodiment of a PDP having a PDP partition wall of the present invention. FIG. 2 is a view of the PDP of FIG. 1 viewed from a display surface. FIG. 3 is a perspective view showing a conventional PDP having a PDP partition wall. [Description of Signs] 1 Plasma display panel (PDP) 2 Insulating plate 3 Partition wall 4 Electrode 5 Discharge display cell 6 Display surface 7 Light emitting / discharging unit 8 Side wall of partition 9 Roundness 10 Intersection point 11 of electrode performing main discharge 11 Radius of curvature

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平7−114879(JP,A) 特開 平6−44907(JP,A) 特開 平6−36689(JP,A) (58)調査した分野(Int.Cl.7,DB名) H01J 17/16 H01J 9/02 H01J 11/02 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-114879 (JP, A) JP-A-6-44907 (JP, A) JP-A-6-36689 (JP, A) (58) Field (Int.Cl. 7 , DB name) H01J 17/16 H01J 9/02 H01J 11/02

Claims (1)

(57)【特許請求の範囲】 【請求項1】対向した一対の絶縁板間に設けた複数の電
極群と、該絶縁板間の対向空間を仕切る隔壁とで複数の
放電表示セルを構成し、該放電表示セルに気密封入した
発光ガスを選択的に発光放電させて画面の発光素子とす
るプラズマディスプレイパネルにおいて、前記隔壁の側
面が少なくともプラズマディスプレイパネルの表示面か
ら見て、発光放電部を取り囲むように楕円状の丸みを有
し、この隔壁側面の曲率半径が85〜170μmであ
ことを特徴とするプラズマディスプレイパネル。
(57) [Claims 1] A plurality of discharge display cells are constituted by a plurality of electrode groups provided between a pair of opposed insulating plates and a partition partitioning a facing space between the insulating plates. In a plasma display panel which selectively emits and discharges a light-emitting gas hermetically sealed into the discharge display cell to serve as a light-emitting element of a screen, a side surface of the partition wall is at least viewed from a display surface of the plasma display panel. Have an elliptical roundness to surround
And, a plasma display panel that the radius of curvature of the partition wall side surface, characterized in 85~170μm der Rukoto.
JP23202596A 1996-09-02 1996-09-02 Plasma display panel Expired - Fee Related JP3472415B2 (en)

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Application Number Priority Date Filing Date Title
JP23202596A JP3472415B2 (en) 1996-09-02 1996-09-02 Plasma display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23202596A JP3472415B2 (en) 1996-09-02 1996-09-02 Plasma display panel

Publications (2)

Publication Number Publication Date
JPH1074458A JPH1074458A (en) 1998-03-17
JP3472415B2 true JP3472415B2 (en) 2003-12-02

Family

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Application Number Title Priority Date Filing Date
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Country Link
JP (1) JP3472415B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10326570A (en) * 1997-05-28 1998-12-08 Hitachi Ltd Gas discharge type display panel and display device using this panel
JP3729318B2 (en) * 1999-09-01 2005-12-21 パイオニア株式会社 Plasma display panel
KR100603278B1 (en) * 2001-04-13 2006-07-20 삼성에스디아이 주식회사 Plasma Display Panel having enhancing Seperator Structure
KR100421496B1 (en) * 2002-02-28 2004-03-11 엘지전자 주식회사 Plasma display panel
KR100670326B1 (en) * 2005-03-23 2007-01-16 삼성에스디아이 주식회사 Plasma display panel

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