JPH0218834A - Formation of fluorescent screen - Google Patents
Formation of fluorescent screenInfo
- Publication number
- JPH0218834A JPH0218834A JP16791288A JP16791288A JPH0218834A JP H0218834 A JPH0218834 A JP H0218834A JP 16791288 A JP16791288 A JP 16791288A JP 16791288 A JP16791288 A JP 16791288A JP H0218834 A JPH0218834 A JP H0218834A
- Authority
- JP
- Japan
- Prior art keywords
- face
- slurry
- bulb
- phosphor
- spin
- 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.)
- Pending
Links
- 230000015572 biosynthetic process Effects 0.000 title description 3
- 239000002002 slurry Substances 0.000 claims abstract description 36
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims description 22
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 238000001035 drying Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 239000008151 electrolyte solution Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 description 3
- 239000005357 flat glass Substances 0.000 description 3
- 229940116411 terpineol Drugs 0.000 description 3
- 238000007605 air drying Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical compound [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- -1 ethylcarpitol Chemical compound 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、蛍光膜形成方法に関し、特にビューファイン
ダ等の小型陰極線管のバルブフェース面に蛍光膜を形成
する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming a fluorescent film, and more particularly to a method for forming a fluorescent film on a bulb face of a small cathode ray tube such as a viewfinder.
ビデオカメラ等に使用されるビューファインダ用小型陰
極線管のバルブフェース内面の蛍光膜は一般に沈澱法に
て形成される。The fluorescent film on the inner surface of the bulb face of a small cathode ray tube for a viewfinder used in a video camera or the like is generally formed by a precipitation method.
上記沈澱法による蛍光膜形成は、まず第４図（ａ）に示
すように、ビューファインダ用陰極ＩＱ管のバルブ（１
）をそのフェース（２）を下にした状態で垂直保持し、
この状態から酢酸バリウム等の電解溶液（３）を上記バ
ルブ（１）に適宜の手段で定量供給する。次に、第４図
（ｂ）に示すように、蛍光体（４）と水ガラスを含有し
た蛍光体スラリー（５）をバルブ（１）内に適宜の手段
で定量供給して前記電解溶液（３）に添加し、この電解
溶液（３）と蛍光体スラリー（５）とを所望の比率で混
合する。すると上記電解溶液（３）と蛍光体スラリー（
５）とが混合された処理液（６）中の蛍光体（４）は、
分散しながら沈澱してバルブ（１）のフェース（２）内
面に付着し、第４図（ｃ）に示すように、重縮合反応に
より上記フェース（２）内面に所望厚の蛍光体層（７）
が形成される。The formation of a fluorescent film by the above-mentioned precipitation method begins with the bulb (1) of the viewfinder cathode IQ tube, as shown in Figure 4(a).
) with its face (2) facing down, hold it vertically,
From this state, an electrolyte solution (3) such as barium acetate is supplied in a fixed amount to the valve (1) by an appropriate means. Next, as shown in FIG. 4(b), a phosphor slurry (5) containing a phosphor (4) and water glass is supplied in a fixed amount into the bulb (1) by an appropriate means, and the electrolytic solution ( 3) and mix this electrolytic solution (3) and the phosphor slurry (5) at a desired ratio. Then, the electrolytic solution (3) and the phosphor slurry (
The phosphor (4) in the treatment liquid (6) mixed with
It precipitates while being dispersed and adheres to the inner surface of the face (2) of the bulb (1), and as shown in FIG. 4(c), a desired thickness of the phosphor layer (7 )
is formed.
この蛍光体層（７）の形成後、バルブ（１）内に残留し
た処理液（６）を排液し、次の乾燥工程にて、第４図（
ｄ）に示すように、蛍光膜（８）を最終的に仕上げる。After forming this phosphor layer (7), the treatment liquid (6) remaining in the bulb (1) is drained and the next drying process is carried out as shown in Fig. 4 (
As shown in d), the fluorescent film (8) is finally finished.
上記乾燥工程では、ドライエア乾燥やオープン乾燥を行
うのが一般的である。前者ドライエア乾燥による手段は
、バルブ（１）のフェース（２）内面に形成された蛍光
体層（７）に微量のドライエアを所定の時間吹き付ける
ことにより、上記蛍光体層（７）から水分を除去して重
縮合反応を完了させ、最終的にフェース（２）内面に蛍
光膜（８）を形成する。また後者オーブン乾燥による手
段は、バルブ（１）を常圧状態で高温雰囲気中に配置し
、フェース（２）内面上の蛍光体層（７）を所定の温度
及び時間で加熱することにより、上記と同様、蛍光体層
（７）から水分を除去して最終的にフェース（２）内面
に蛍光膜（８）を形成する。In the drying step, dry air drying or open drying is generally performed. The former dry air drying method involves blowing a small amount of dry air onto the phosphor layer (7) formed on the inner surface of the face (2) of the bulb (1) for a predetermined period of time to remove moisture from the phosphor layer (7). The polycondensation reaction is then completed, and finally a fluorescent film (8) is formed on the inner surface of the face (2). The latter oven drying method involves placing the bulb (1) in a high temperature atmosphere under normal pressure, and heating the phosphor layer (7) on the inner surface of the face (2) at a predetermined temperature and time. Similarly, moisture is removed from the phosphor layer (7) to finally form a phosphor film (8) on the inner surface of the face (2).
又、上記沈澱法による他、その改良を図ったものとして
スピナー法による蛍光膜形成手段もある。上記スピナー
法によれば、例えば蛍光体とバインダを含むスラリーを
名刺サイズの板ガラス上に所定量だけ滴下し、更に高速
スピン回転させて均一に塗布した後、乾燥させて蛍光膜
を形成する。そして、板ガラスをフェースの大きさに切
断してバルブのファンネル部にフリットシールし、陰極
線管バルブを形成する。ここで、上記スラリーを板ガラ
ス上に塗布する際、シルクスクリーンを用いて印刷する
ようにしてもよい。In addition to the above-mentioned precipitation method, there is also a method for forming a fluorescent film using a spinner method as an improvement thereof. According to the above-mentioned spinner method, a predetermined amount of a slurry containing, for example, a phosphor and a binder is dropped onto a business card-sized plate glass, and the slurry is further spun at high speed to uniformly coat the slurry, followed by drying to form a fluorescent film. Then, the sheet glass is cut to the size of the face and frit-sealed to the funnel portion of the bulb to form a cathode ray tube bulb. Here, when applying the slurry onto a plate glass, printing may be performed using a silk screen.
ところで、上述した陰極線管の蛍光膜形成方法において
沈澱法によるものは、膜質が粗く、より均一な膜質の蛍
光膜形成が要求されると、膜質向上に限界がある。そこ
で、その改良手段としてスピナー法によるものは、均一
な蛍光膜が得られるが、成膜後にフェースをファンネル
部にフリットシールしてバルブを形成する工程が必要と
なり、工数がふえる。更に、フリットシール時には既に
フェースに蛍光膜が形成されているため、溶着時に膜質
が変わって不良になったり、異物がバルブ内に入ったり
するといった不都合が生じる。By the way, in the above-mentioned method for forming a phosphor film of a cathode ray tube, the one using the precipitation method has a rough film quality, and if a phosphor film with a more uniform film quality is required, there is a limit to the improvement of the film quality. Therefore, as an improvement method, a spinner method can obtain a uniform fluorescent film, but requires a step of frit-sealing the face to the funnel portion to form a bulb after film formation, which increases the number of steps. Furthermore, since a fluorescent film is already formed on the face when frit sealing is performed, problems arise such as the quality of the film changes during welding, resulting in defects, and foreign matter entering the bulb.
本発明は、コーナ部が鋭角なフェースを有するバルブフ
ェース内面の略中夫に、蛍光体とバインダとを含む所定
量の蛍光体スラリーを滴下し、バルブをその軸芯を中心
に高速スピン回転させて上記スラリーをフェース内面に
均一に拡げた後、その状態でスピン回転数を下げて上記
フェースを熱風にて外部より加温すると共に、フェース
内面に高温乾燥空気を導入し、上記スラリーを乾燥させ
て蛍光膜を形成する。In the present invention, a predetermined amount of phosphor slurry containing phosphor and a binder is dropped onto the inner surface of a bulb face having an acute corner, and the bulb is spun around its axis at high speed. After spreading the slurry uniformly on the inner surface of the face, in this state, the spin speed is lowered and the face is heated from the outside with hot air, and high-temperature dry air is introduced into the inner surface of the face to dry the slurry. to form a fluorescent film.
上記技、術的手段によれば、フラットなバルブフェース
に所定量の蛍光体スラリーを滴下して高速スピン回転さ
せ、フェース内面に上記スラリーを均一に拡げた状態で
スピン回転数を下げ、高温乾燥空気と熱風にてフェース
内外より上記スラリーを乾燥させて蛍光膜を形成し、バ
ルブフェースに均一な蛍光膜を形成する。According to the above technique and technical means, a predetermined amount of phosphor slurry is dropped onto a flat valve face, and the slurry is spun at high speed, and with the slurry uniformly spread on the inner surface of the face, the spin speed is lowered and high temperature drying is performed. The slurry is dried from the inside and outside of the face using air and hot air to form a fluorescent film, thereby forming a uniform fluorescent film on the bulb face.
（実施例〕
本発明に係る蛍光膜形成方法の一実施例を第１図乃至第
３図（ａ）〜（Ｃ）を参照して以下説明する。本発明で
は、まず第１図に示すように、陰極線管バルブ（ｌＯ）
のフェース（１１） ヲ底にした状態で、ネック部（１
２）よりピペット（１３）等にてフェース内面略中夫に
所定量の蛍光体スラリー（１４）を滴下する。上記陰極
線管バルブ（１０）はビューファインダ用等の小型のも
ので、そのフェース（１１）はフラットで鋭角のコーナ
部を有する。又、蛍光体スラリー（１４）は、蛍光体の
調合液とビヒクルとを重量比で（１，５〜２）：ｌの割
合で混ぜたもので、蛍光体の調合液は、蛍光体と有機溶
剤（例えばテルピネオール、エチルカルピトール、シク
ロヘキサン）とを重量比で約１００：５０の割合で調合
し、ビヒクルはバインダ（例えばエチルセルロース）を
有機溶剤（例えばケロシン）と安定剤（例えばテルピネ
オール）とを重量比でｌ：（１０〜１５） ： （
６〜１０）の割合で調合したちのである、そして、画調
合液の混合にて２５℃で粘度２３００ｃｐのスラリーを
得、ピペット（１３）にて２０μ！の量を滴下する。(Example) An example of the fluorescent film forming method according to the present invention will be described below with reference to FIGS. 1 to 3 (a) to (C). In, cathode ray tube bulb (lO)
With the face (11) of the
2) Using a pipette (13) or the like, drop a predetermined amount of the phosphor slurry (14) approximately on the inner surface of the face. The cathode ray tube bulb (10) is a small one for use in a viewfinder or the like, and its face (11) is flat and has an acute corner. The phosphor slurry (14) is a mixture of a phosphor preparation and a vehicle at a weight ratio of (1.5 to 2):l. A solvent (e.g., terpineol, ethylcarpitol, cyclohexane) is mixed in a ratio of about 100:50 by weight, and the vehicle is a binder (e.g., ethyl cellulose), an organic solvent (e.g., kerosene), and a stabilizer (e.g., terpineol). Ratio l: (10-15): (
6 to 10), and by mixing the image preparation liquid, a slurry with a viscosity of 2300 cp was obtained at 25°C, and with a pipette (13), a slurry with a viscosity of 2300 cp was obtained. Drip the amount of
次に、バルブ（１０）をそのままの姿勢又は、第２図に
示すように、倒立させた姿勢で、第３図（ａ）に示すよ
うに、その軸芯を中心にして約３０００〜５０００ｒ
、 Ｐ 、ｔａの回転数で約２０〜５０秒間、高速スピ
ン回転させ、上記スラリー（１４）をフェース（１１）
の内面に均一に拡げる。そこで、十分に拡がった時点で
、第３図（ａ）（ｂ）（Ｃ）に示すように、スピン回転
数を１００Ｏｒ、ｐ、ｍに下げ、同時にネック部（１２
）より送風管（１５）を挿通して６０〜８０℃位の高温
乾燥空気（１６）をフェース（１１）の内面に吹き付け
ると共に、外部よりフェース（１１）に熱風（１７）を
照射して加温する。そうすると、上記スラリー（１４）
はフェース（１１）の温度上昇によって一旦、粘度が下
がるが、液中のケロシン、テルピネオール等の有機溶剤
が上記送風と加温によって蒸発していって粘度が上がり
、乾燥していく。Next, as shown in FIG. 3(a), with the valve (10) in the same position or in an inverted position as shown in FIG.
, P, and ta for about 20 to 50 seconds to transfer the slurry (14) to the face (11).
Spread evenly over the inner surface of the Therefore, when it has expanded sufficiently, the spin rotation speed is lowered to 100 Or, p, m, as shown in Figure 3 (a), (b), and (C), and at the same time, the neck part (12
) through the blower pipe (15) to blow high-temperature dry air (16) of about 60 to 80°C onto the inner surface of the face (11), and heat the face (11) by irradiating hot air (17) from the outside. Warm up. Then, the above slurry (14)
The viscosity of the liquid temporarily decreases due to the rise in temperature of the face (11), but as organic solvents such as kerosene and terpineol in the liquid evaporate due to the above-mentioned air blowing and heating, the viscosity increases and the liquid becomes dry.
この時、スラリー（１４）の表面は部分的に、通常、略
中央付近より乾燥し始めていくが、バルブ（ｌＯ）の回
転によってスラリー（１４）の表面に内外より略均−に
高温乾燥空気（１６）と熱風（１７）を加え、更に第２
図に示すように、高温乾燥空気（１６）を送風管（１６
）の底部側壁の横孔より送出し、スラリー（１４）の周
辺部に照射するようにしているため、中央部から周辺部
まで略全面に亘って均一に乾燥していく、そして、乾燥
が終るまでバルブ（ｌＯ）の回転及び高温乾燥空気（１
６）と熱風（１７）の送風を続けていくと、乾燥の途中
でスラリー（１４）がフェース（１１）のコーナ部付近
に凝集することなく、均一に拡がった状態で、均一に乾
燥していき、フェース（１１）内面に均一な蛍光膜を形
成する。At this time, the surface of the slurry (14) begins to dry partially, usually around the center, but by rotating the valve (lO), high-temperature dry air ( 16) and hot air (17), and then
As shown in the figure, the high temperature dry air (16) is
) is sent out from the horizontal hole in the bottom side wall of the slurry (14), and the periphery of the slurry (14) is irradiated, so it dries uniformly over almost the entire surface from the center to the periphery, and then the drying ends. Rotate the valve (lO) until high temperature dry air (lO)
6) and hot air (17) are continued, the slurry (14) does not aggregate near the corners of the face (11) during drying, but is evenly spread and dried evenly. Then, a uniform fluorescent film is formed on the inner surface of the face (11).
本発明によれば、ビューファインダ用等の小型陰極線管
バルブのフェース内面に蛍光膜を形成する際、フェース
内面に所定量の蛍光体スラリーを滴下し、高速スピン回
転させて拡げた後、スピン回転数を下げてフェース内外
に高温乾燥空気と熱風を加えて乾燥させるようにしたか
ら、スピナー法によってバルブフェース内面に均一な膜
質の蛍光膜を形成することができる。According to the present invention, when forming a fluorescent film on the inner face of a small cathode ray tube bulb for use in a viewfinder, etc., a predetermined amount of phosphor slurry is dropped on the inner face, spread by high-speed spin rotation, and then spin-rotated. By lowering the number of bulbs and applying high-temperature dry air and hot air to the inside and outside of the face for drying, it is possible to form a uniform fluorescent film on the inner surface of the valve face using the spinner method.
第１図と第２図は本発明に係る蛍光膜形成方法の一実施
例を示すバルブフェース内面に蛍光体スラリーを滴下す
る工程とその乾燥工程の各一部所面側面図、第３図（ａ
）（ｂ）（ｃ）は第１図と第２図の各工程においてバル
ブのスピン回転数の時間的変化とフェースの外部及び内
部より送る熱風と高温乾燥空気の各送風有無の時間的変
化を示す各グラフ、第４図（ａ）（ｂ）（ｃ）（ｄ）は
従来の蛍光膜形成方法の一具体例を示す各工程図である
。
（１０）−・・バルブ、 （１１）−・・フェ
ース、（１４）・・−蛍光体スラリ−（１６）−・・高
温乾燥空気、（１７） −・熱風。
特 許 出 願 人 関西日本電気株式会社 ・第４
図（り
第４図（８）
ＭＳ ４図（ｃ）
第４図（ｄ−）FIGS. 1 and 2 are partial side views of the step of dropping a phosphor slurry onto the inner surface of a bulb face and the drying step, showing an embodiment of the method for forming a phosphor film according to the present invention, and FIG. a
), (b), and (c) show the temporal changes in the spin rotation speed of the valve and the temporal changes in the presence or absence of hot air and high-temperature dry air sent from the outside and inside of the face in each process shown in Figures 1 and 2. The graphs shown in FIGS. 4(a), 4(b), 4(c), and 4(d) are process diagrams showing a specific example of a conventional fluorescent film forming method. (10) --- Bulb, (11) --- Face, (14) --- Phosphor slurry, (16) --- High temperature dry air, (17) --- Hot air. Patent applicant Kansai NEC Co., Ltd. 4th
Figure 4 (8) MS Figure 4 (c) Figure 4 (d-)
Claims (1)
の蛍光体スラリーを滴下し、バルブ軸芯を中心に高速回
転させて上記スラリーをフェース面に均一に拡げ、次い
で低速回転させて上記フェースを加温すると共に、バル
ブ内に高温乾燥空気を導入し、上記スラリーを乾燥させ
て蛍光膜を形成することを特徴とする蛍光膜形成方法。(1) Drop a predetermined amount of phosphor slurry onto a bulb face that has an acute corner, rotate the bulb at high speed around the axis to spread the slurry uniformly over the face, and then rotate at low speed to spread the slurry over the face. A method for forming a fluorescent film, which comprises heating the slurry and introducing high-temperature dry air into a bulb to dry the slurry to form a fluorescent film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16791288A JPH0218834A (en) | 1988-07-05 | 1988-07-05 | Formation of fluorescent screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16791288A JPH0218834A (en) | 1988-07-05 | 1988-07-05 | Formation of fluorescent screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0218834A true JPH0218834A (en) | 1990-01-23 |
Family
ID=15858356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16791288A Pending JPH0218834A (en) | 1988-07-05 | 1988-07-05 | Formation of fluorescent screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0218834A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08315731A (en) * | 1995-05-15 | 1996-11-29 | Sony Corp | Manufacture of cathode ray tube |
| WO1999066525A1 (en) * | 1998-06-15 | 1999-12-23 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| US8609389B2 (en) | 2009-03-24 | 2013-12-17 | Meito Sangyo Co., Ltd. | Milk-clotting protease derived from a microorganism |
-
1988
- 1988-07-05 JP JP16791288A patent/JPH0218834A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08315731A (en) * | 1995-05-15 | 1996-11-29 | Sony Corp | Manufacture of cathode ray tube |
| WO1999066525A1 (en) * | 1998-06-15 | 1999-12-23 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| EP1220269A1 (en) * | 1998-06-15 | 2002-07-03 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| EP1220270A1 (en) * | 1998-06-15 | 2002-07-03 | Matsushita Electric Industrial Co., Ltd. | Method for producing a plasma display panel with superior light-emitting characteristics |
| EP1223599A2 (en) * | 1998-06-15 | 2002-07-17 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for producing a plasma display panel |
| EP1223602A2 (en) * | 1998-06-15 | 2002-07-17 | Matsushita Electric Industrial Co., Ltd. | Method for producing a plasma display panel with superior light-emitting characteristics |
| EP1223602A3 (en) * | 1998-06-15 | 2002-07-24 | Matsushita Electric Industrial Co., Ltd. | Method for producing a plasma display panel with superior light-emitting characteristics |
| EP1223599A3 (en) * | 1998-06-15 | 2003-01-08 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for producing a plasma display panel |
| US6984159B1 (en) | 1998-06-15 | 2006-01-10 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| US7040944B2 (en) | 1998-06-15 | 2006-05-09 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| US7131879B2 (en) | 1998-06-15 | 2006-11-07 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| CN1296957C (en) * | 1998-06-15 | 2007-01-24 | 松下电器产业株式会社 | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| US7172482B2 (en) | 1998-06-15 | 2007-02-06 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| KR100742855B1 (en) * | 1998-06-15 | 2007-07-25 | 마츠시타 덴끼 산교 가부시키가이샤 | Plasma display panel |
| US7315120B2 (en) | 1998-06-15 | 2008-01-01 | Matsushita Electic Industrial Co., Ltd. | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| US7422502B2 (en) | 1998-06-15 | 2008-09-09 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel with superior light-emitting characteristics, and method and apparatus for producing the plasma display panel |
| US8609389B2 (en) | 2009-03-24 | 2013-12-17 | Meito Sangyo Co., Ltd. | Milk-clotting protease derived from a microorganism |
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