JPS58192246A - Manufacture of picture tube - Google Patents
Manufacture of picture tubeInfo
- Publication number
- JPS58192246A JPS58192246A JP7536882A JP7536882A JPS58192246A JP S58192246 A JPS58192246 A JP S58192246A JP 7536882 A JP7536882 A JP 7536882A JP 7536882 A JP7536882 A JP 7536882A JP S58192246 A JPS58192246 A JP S58192246A
- Authority
- JP
- Japan
- Prior art keywords
- water
- picture tube
- thin film
- phosphor
- layer
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/28—Luminescent screens with protective, conductive or reflective layers
Landscapes
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は受像管の製造方法、特に螢光体層の上面に形成
するメタルバック層の下地としてのフィルミング層の形
成方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a picture tube, and more particularly to a method for forming a filming layer as a base for a metal back layer formed on the upper surface of a phosphor layer.
通常、受像管の螢光面上に例えばアルミニウムのような
金属を蒸着してメタルバック層を形成する場合、−向に
近い平滑なメタルバック層、すなわちフェースプレート
の内Nmから観察するとき、編または斑点むらの生じな
いメタルバック層を得るために従来から適当な萌処理を
行なって、塗着されている螢光体層表面の凹凸を埋めて
平滑化させていた。すなわち、図に示すように受蘭管の
製造工程において、フェースプレート1の内面に塗着さ
れた蛍光体層2を、ポリビニルアルコール希薄水浴融3
でその凹凸面を埋め、螢光体層2の表+i0を凭かけ上
平滑にし、その上面に有機高分子物置を゛浴剤rC俗か
した蔭液を噴躊状にして吹きつけた恢乾燥し、給剤およ
び水分をA発させ、有機高分子物′j[湧紛4を螢光体
)−2の上面に形成し、次いでその上面にアルミニウム
等の金属を蒸着して平滑なメタルバック層5を得ていた
。Normally, when a metal back layer is formed by vapor-depositing a metal such as aluminum on the fluorescent surface of a picture tube, when observing from a smooth metal back layer close to the - direction, that is, from within Nm of the face plate, the editing Alternatively, in order to obtain a metal back layer that does not have uneven spots, a suitable eruption treatment has conventionally been carried out to fill in the irregularities on the surface of the coated phosphor layer and smooth it. That is, as shown in the figure, in the manufacturing process of the receiving tube, the phosphor layer 2 coated on the inner surface of the face plate 1 is melted in a polyvinyl alcohol diluted water bath 3.
The surface of the phosphor layer 2 was propped up to make it smooth, and then a spray of liquid containing an organic polymer was sprayed onto the top surface for drying. Then, the supply agent and moisture are released A, and the organic polymer material ′j [spatter 4 is the phosphor]-2 is formed on the top surface of the organic polymer ′j [sprinkle powder 4 is the phosphor]-2. Then, a metal such as aluminum is vapor-deposited on the top surface to form a smooth metal back. I got layer 5.
しかしながら、上述した螢光面の形成方法によると、蛍
光体層2上にスプレー塗布されたポリビニルアルコール
希薄水浴液3中のポリビニルアル」−ルが乾燥時に不均
一に凝議し、その上面に殖布された壱機尚分子物實薄膜
4に亀裂あるいはピンホールを発生させていた。そして
、この亀裂あるいはピンホールの部分的な発生は、その
上面に形成されるメタルバック層5に縞または斑点むら
を発生させ、したがってフェースプレート1の内面全面
にわたって平滑なメタルバック層5を形成することは極
めて困難となり、商品価値を着しく低下させることが発
明者らの実験研究の結果から明らかとなった。However, according to the method for forming a fluorescent surface described above, the polyvinyl alcohol in the polyvinyl alcohol dilute water bath solution 3 spray-coated onto the phosphor layer 2 condenses unevenly during drying and grows on the upper surface. Cracks or pinholes were generated in the applied Ichiki Sho Molecular Materials thin film 4. The partial occurrence of these cracks or pinholes causes stripes or uneven spots on the metal back layer 5 formed on the upper surface, thus forming a smooth metal back layer 5 over the entire inner surface of the face plate 1. It has become clear from the results of experimental research by the inventors that this has become extremely difficult and the product value has been significantly reduced.
したがって本発明は、上述した状況に鑑みてなされたも
のであり、その目的とするところは、受像管のフェース
プレート内面全面にわたって平滑なメタルバック層が得
られる受像管の製造方法を提供することにある。Therefore, the present invention has been made in view of the above-mentioned situation, and an object thereof is to provide a method for manufacturing a picture tube in which a smooth metal back layer can be obtained over the entire inner surface of the face plate of the picture tube. be.
このような目的を達成するために本発明は、螢光体11
m上の有機高分子物質薄膜を形成するに当り、その前処
理としてピロリドン基を有する0、01〜2Xt%の水
溶性有機物水溶液で螢光体層の表面凹凸を埋めるように
したものである。このような方法によれば、螢光体自体
あるいは螢光体表面に付着している無機物質、例えばZ
r?” 、 Cj” 、 so!−。In order to achieve such an object, the present invention provides a phosphor 11
In forming a thin film of an organic polymer substance on the phosphor layer, the surface irregularities of the phosphor layer are filled with a 0.01 to 2Xt% aqueous solution of a water-soluble organic substance having a pyrrolidone group as a pretreatment. According to this method, the phosphor itself or an inorganic substance attached to the phosphor surface, such as Z
r? ”, Cj”, so! −.
ルが凝集するのに対してピロリドン基を有する水浴性有
機物は化学的に極めて安定で、良好な結果が得られた。In contrast to pyrrolidone group-containing water-based organic substances, which are chemically extremely stable, good results were obtained.
以下本発明の実施例を砕細に説明する。Examples of the present invention will be described in detail below.
まず、受1.1!fのフェースプレートの内面に、水ガ
ラス水浴液中での沈降塗布法によって緑色発光螢光体C
aS:Ceを重布した後、 ピロリドン基を鳴する水溶
性有機物として例えば02電iのポリビニルピロリドン
水浴液で螢光体層を濡らし、次いてアクリル樹脂のトル
エン電数をスプレーにより塗布して乾燥し、有機−分子
物質の薄膜を形成した。そυノ後このIII膜上に^空
蒸着法によりアルミニウムのメタルバックj−を形成し
、・焼成処□理した。First, Uke 1.1! Green-emitting phosphor C was applied to the inner surface of the face plate of f by a precipitation coating method in a water glass bath solution.
After overlaying aS:Ce, the phosphor layer is wetted with a water-soluble organic substance containing a pyrrolidone group, such as a polyvinylpyrrolidone water bath solution of 02 densities, and then an acrylic resin toluene densities is applied by spraying and dried. and formed a thin film of organic-molecular material. Thereafter, an aluminum metal back was formed on this III film by an empty evaporation method, and a firing process was performed.
このようにして得られた受像管は、フェースプレート内
面全面にわたって縞または斑点むらの全 【く
生じない、極めて良好なメタルバックI−が得られ、従
来の製造方法による受像管に比べて輝度を5〜lO%向
上させることができた。The picture tube obtained in this way has an extremely good metal back I- with no stripes or uneven spots over the entire inner surface of the face plate, and has higher brightness than picture tubes manufactured using conventional methods. It was possible to improve it by 5 to 10%.
なお、ポリビニルピロリドン水溶液の濃度は、0.01
重量%以下では平滑な鏝面を有するメタルバック層が形
成できず、また、2.0重量%以上となると、未分解樹
脂が残留して輝度が低下することになる。したがって、
Oo1〜2.0重量%の範囲が最適である。In addition, the concentration of polyvinylpyrrolidone aqueous solution is 0.01
If it is less than 2.0% by weight, a metal back layer with a smooth trowel surface cannot be formed, and if it is more than 2.0% by weight, undecomposed resin remains and the brightness decreases. therefore,
A range of Oo1 to 2.0% by weight is optimal.
なお、上記実施例においては、水ガラス水溶液中で沈降
塗布した螢光体層に適用した場合について説明したが、
本発明はこれに限定されるものではなく、例えばカラー
受像管の製造方法に用いられているポリビニルアルコー
ル、tクロム酸塩系スラリーによって塗布形成した螢光
体層に適用できることは勿論である。In addition, in the above example, the case where it was applied to a phosphor layer coated by precipitation in a water glass aqueous solution was explained.
The present invention is not limited thereto, and can of course be applied to, for example, a phosphor layer formed by coating with a polyvinyl alcohol/t-chromate slurry used in the manufacturing method of color picture tubes.
また、上記実施例においては、ピロリドン基を有する水
溶性有機物としてポリビニルピロリドンを用いた場合に
ついて説明したが、本発明はこれに限定されるものでは
なく、例えばピロリドン基を有する化合物として1−メ
チル−2−ピロリドンなども適用できることは勿論であ
る。Further, in the above example, a case was explained in which polyvinylpyrrolidone was used as a water-soluble organic substance having a pyrrolidone group, but the present invention is not limited thereto. For example, as a compound having a pyrrolidone group, 1-methyl- Of course, 2-pyrrolidone and the like can also be applied.
以上説明したように本発明によれば、輪または斑点むら
の全く生じない、すなわち平滑なメタルバック層が傅ら
ねるので、受像管の輝度を大幅に向上させ、品實および
歩留りの向上に寄与できるという極めてrthだ効果が
得られる。As explained above, according to the present invention, since a smooth metal back layer is formed without any ring or spot unevenness, the brightness of the picture tube is greatly improved, contributing to improvements in product quality and yield. You can get the very rth effect that you can.
図は本発明による受像管の製造方法の一例を説明するた
ゎυ)フェースプレートの要部断面図である。
1争・・番フェースプレー1゛、2・・・・螢光体1m
、3・−・書ポリビニルアルコール液、4・・・・廟磯
^分子物貴薄膜、5・・・・メタルバック1曽。The figure is a sectional view of a main part of a face plate illustrating an example of the method of manufacturing a picture tube according to the present invention. 1st race... face spray 1゛, 2... fluorescent material 1m
, 3...Polyvinyl alcohol liquid, 4...Myoiso^ Molecular substance precious thin film, 5...Metal back 1 so.
Claims (1)
光体層上をピロリドン基を有する水浴性有機物水溶液で
濡らした後、有機高分子物質薄膜を形成し、該薄膜上に
メタルバック層を形成して焼成処理したことを%*とす
る受像管の製造方法。 2 前記ピロリドン基を有する水浴性有機物を、ポリビ
ニルピロリドンとしたことを特徴とする特許請求の範囲
第1項記載の受像管の製造方法。 3跨1」己ポリヒ゛ニルピロリドンを、001〜2.0
重量%の範囲で含有させたことを特徴とする特flf請
求の範囲第2項記載の受像管の製造方法。[Scope of Claims] 1. A phosphor layer is formed on the inner surface of the face plate, and after wetting the phosphor layer with an aqueous solution of a water-based organic substance having a pyrrolidone group, a thin film of an organic polymer substance is formed; A method for manufacturing picture tubes in which a metal back layer is formed on a thin film and then fired. 2. The method for manufacturing a picture tube according to claim 1, wherein the water bathing organic substance having a pyrrolidone group is polyvinylpyrrolidone. 3-1” self-polyvinylpyrrolidone, 001-2.0
The method for manufacturing a picture tube according to claim 2, characterized in that the content is in a range of % by weight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7536882A JPS58192246A (en) | 1982-05-07 | 1982-05-07 | Manufacture of picture tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7536882A JPS58192246A (en) | 1982-05-07 | 1982-05-07 | Manufacture of picture tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58192246A true JPS58192246A (en) | 1983-11-09 |
Family
ID=13574202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7536882A Pending JPS58192246A (en) | 1982-05-07 | 1982-05-07 | Manufacture of picture tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58192246A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2647263A1 (en) * | 1989-05-16 | 1990-11-23 | Thomson Tubes Electroniques | Process for manufacturing a display screen, with deposition of aluminium on a photoengraved sub-layer |
-
1982
- 1982-05-07 JP JP7536882A patent/JPS58192246A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2647263A1 (en) * | 1989-05-16 | 1990-11-23 | Thomson Tubes Electroniques | Process for manufacturing a display screen, with deposition of aluminium on a photoengraved sub-layer |
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