JPS63207030A - Formation of color picture tube fluorescent screen - Google Patents
Formation of color picture tube fluorescent screenInfo
- Publication number
- JPS63207030A JPS63207030A JP3805687A JP3805687A JPS63207030A JP S63207030 A JPS63207030 A JP S63207030A JP 3805687 A JP3805687 A JP 3805687A JP 3805687 A JP3805687 A JP 3805687A JP S63207030 A JPS63207030 A JP S63207030A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor layer
- face plate
- picture tube
- color picture
- phosphor
- 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.)
- Granted
Links
- 230000015572 biosynthetic process Effects 0.000 title 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 12
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 12
- 238000007127 saponification reaction Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 abstract 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 210000000941 bile Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 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】 〔発明の目的〕 （産業上の利用分野） 本発明はカラー受像管蛍光面の形成方法に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a method for forming a color picture tube phosphor screen.
（従来の技術）
一般にシャドウマスク方式のカラー受像管蛍光面の形成
には、次の様な方法がとられている。まずフェースプレ
ート内面に感光性の蛍光体スラリーを塗布侵、乾燥し蛍
光体層を形成する。その後シャドウマスクを介して蛍光
体層の所定の位置を露光する。その後末露光部分を現像
して１色目の蛍光体層を骨る。以後同様にして２色目、
３色目の蛍光体層を形成する。次にこれら蛍光体層の上
にアルミ蒸着した金属反射膜を形成してカラー受像管蛍
光面が得られる。(Prior Art) Generally, the following method is used to form a color picture tube phosphor screen using a shadow mask method. First, a photosensitive phosphor slurry is coated on the inner surface of the face plate and dried to form a phosphor layer. Thereafter, a predetermined position of the phosphor layer is exposed to light through a shadow mask. Thereafter, the last exposed portion is developed to remove the first color phosphor layer. After that, do the same for the second color,
A third color phosphor layer is formed. Next, a metal reflective film made of vapor-deposited aluminum is formed on these phosphor layers to obtain a color picture tube phosphor screen.
ところで、上述した蛍光面形成方法では蛍光体層はフェ
ースプレート内面との密着力が弱く、蛍光体層のはがれ
（いわゆるドツト落ち）が生じる。However, in the method for forming a phosphor screen described above, the phosphor layer has weak adhesion to the inner surface of the face plate, and peeling (so-called dot drop) of the phosphor layer occurs.
そこで、この問題を解決する手段として特開昭５７−１
５１１４６号公報に示される様に蛍光体スラリー中のポ
リビニルアルコールの重合度及び粘度を規定してドツト
落ちを防止する技術が提案されている。 しかし、この
技術に示されるポリビニルアルコール（以下ＰＶＡと称
す）は単に蛍光体同士を架橋するため架橋剤にすぎず蛍
光体層とフェースプレート内面との密着力を向上させる
ものではなく、密着力はいまだ不充分でおる。又、他の
手段として蛍光体層を形成する前に第２表に示す様なＰ
ＶＡ及び胆クロム酸アンモニウム（以下ＡＤＣと称す）
の希薄水溶液をフェースプレート内面、にプリコートし
、乾燥させてその後蛍光体層を形成して蛍光体層とフェ
ースプレート内面との密着力の向上を図る手段もめる。Therefore, as a means to solve this problem, JP-A-57-1
As shown in Japanese Patent No. 51146, a technique has been proposed for preventing dot drop by regulating the degree of polymerization and viscosity of polyvinyl alcohol in a phosphor slurry. However, the polyvinyl alcohol (hereinafter referred to as PVA) shown in this technology is only a crosslinking agent because it simply crosslinks the phosphors, and does not improve the adhesion between the phosphor layer and the inner surface of the face plate. It's still not enough. In addition, as another method, P as shown in Table 2 can be used before forming the phosphor layer.
VA and ammonium bile chromate (hereinafter referred to as ADC)
A means for improving the adhesion between the phosphor layer and the inner surface of the face plate is also provided by precoating a dilute aqueous solution of the phosphor on the inner surface of the face plate, drying it, and then forming a phosphor layer.
しかしＰＶＡとＡＤＣを主成分とするプリコート溶液は
蛍光体層とフェースプレート内面との接着力が弱く例え
ば蛍光体層を現像する際のスプレー圧力が高すぎた場合
、蛍′光体のはがれ落ち、すなわちドツト落ちとなって
しまう。又、蛍光体層の厚さが厚すぎた場合にも、上記
同様ドツト落ちを生じてしまう。However, the pre-coat solution mainly composed of PVA and ADC has weak adhesion between the phosphor layer and the inner surface of the face plate, and if the spray pressure is too high when developing the phosphor layer, for example, the phosphor may peel off. In other words, dots fall. Also, if the thickness of the phosphor layer is too thick, droplets will occur as described above.
（以下余白）
〔発明が解決しようとする問題点〕
以上のように従来の技術では、蛍光体層とフェースプレ
ート内面との密着力が弱く蛍光体層のはがれを生じてし
まうという問題がある。(The following is a blank space) [Problems to be Solved by the Invention] As described above, the conventional technology has a problem in that the adhesion between the phosphor layer and the inner surface of the face plate is weak, resulting in peeling of the phosphor layer.
本発明は、蛍光体層とフェースプレート内面との密着力
を向上させ蛍光体層のはがれが発生せず、ざらにカラー
受像管の発光ｉＷ度の向上を図った高性能なカラー受ｅ
管を提供することを目的とする。The present invention is a high-performance color receiver that improves the adhesion between the phosphor layer and the inner surface of the face plate, prevents the phosphor layer from peeling off, and roughly improves the luminous intensity of the color picture tube.
The purpose is to provide pipes.
（発明の構成〕
（問題点を解決するための手段）
本発明は、カラー受像管蛍光面の形成方法においてポリ
ビニルアルコールを主成分とし、ケン化度が８５．０〜
９８．０ ｍｏ１％であり、その４％水溶液の粘度が２
０℃で４５〜７０ｃｐｓであるプリコート溶液をフェー
スプレート内面に塗布する工程と、前記プリコート溶液
を乾燥しプリコート膜を形成する工程と、前記プリコー
ト膜上に蛍光体層を形成する工程とを少なくとも有する
ことを特徴とすることにより良好な蛍光面品位を得るこ
とが可能となり、ざらに発光輝度の向上を図ることがで
きる。(Structure of the Invention) (Means for Solving the Problems) The present invention provides a method for forming a color picture tube phosphor screen in which polyvinyl alcohol is the main component and the degree of saponification is 85.0 to 85.0.
98.0 mo1%, and the viscosity of its 4% aqueous solution is 2
The method includes at least the steps of applying a precoat solution having a pressure of 45 to 70 cps at 0° C. to the inner surface of the face plate, drying the precoat solution to form a precoat film, and forming a phosphor layer on the precoat film. With this feature, it becomes possible to obtain a good phosphor screen quality, and it is possible to roughly improve the luminance of light emission.
（作 用）
本発明の作用はポリビニルアルコールを主成分とし、ケ
ン化度が８５゜Ｏ〜９８．０ ｍｏ１％であり、その４
％水溶液の粘度が２０℃で４５〜７０ｃｐｓであるプリ
コート溶液を蛍光体層を形成する前にフェースプレート
内面にプリコートすることにより化学反応を利用して目
的とする密着力を嵜るものである。(Function) The function of the present invention is that polyvinyl alcohol is the main component, the degree of saponification is 85°O to 98.0 mo1%, and the
% aqueous solution having a viscosity of 45 to 70 cps at 20° C. is precoated on the inner surface of the face plate before forming the phosphor layer, thereby utilizing a chemical reaction to achieve the desired adhesion.
（実施例） 以下、本発明の一実施例を説明する。(Example) An embodiment of the present invention will be described below.
第１図は本発明のカラー受像管蛍光面の形成方法を示す
工程図である。FIG. 1 is a process diagram showing a method for forming a color picture tube phosphor screen of the present invention.
第１図においてフェースプレートを水洗する。In FIG. 1, the face plate is washed with water.
（工程１）次に硝酸フリット溶液を塗布する。(Step 1) Next, apply a nitric acid frit solution.
（工程２）その後、プリコート液用のＰＶＡとして、平
均重合度が２４００．ケイ化度９５ ｍｏ１％、４％水
溶液の粘度が２０’Ｃで５８ｃｐｓのものを使用し、第
１表の樹脂濃度となるよう純水にて希釈した水溶液をカ
ラー受像管用フェースプレートにプリコートする。（工
程３）このプリコート溶液を乾燥しく工程４〉その俊、
第４表に示す蛍光体スラリーを塗布乾燥した。（工程５
）、（工程６）次にシャドウマスクを介して露光した。(Step 2) Then, as PVA for the precoat liquid, the average degree of polymerization is 2400. A 4% aqueous solution with a degree of silicification of 95 mo1% and a viscosity of 58 cps at 20'C is used, and the aqueous solution diluted with pure water to the resin concentration shown in Table 1 is pre-coated on the face plate for a color picture tube. (Step 3) Dry this pre-coat solution Step 4> Sonoshun,
A phosphor slurry shown in Table 4 was applied and dried. (Step 5
), (Step 6) Next, exposure was performed through a shadow mask.
く工程７）この時の露光社は第３表の通りとした。そし
てスプレー現像を行ない（工程８）、以降（工程４）か
ら（工程８）をくり返し蛍光面を形成した。Step 7) The exposure company at this time was as shown in Table 3. Then, spray development was performed (Step 8), and thereafter (Step 4) to (Step 8) were repeated to form a phosphor screen.
上記の具体例により蛍光面形成を行った結果、第３表及
び第２図に示すように従来のプリコート液は、露光伍６
７％以上に於いて著るしく蛍光体ドツトが剥れ落ちてし
まうことに対して、第１表に示すプリコート液を用いた
場合は全く蛍光体ドツトの剥れがなく、良好な蛍光面が
得られることを確認した。これは上記ＰＶＡの製造過程
に於いて、重合反応より得られたポリ酢酸、ビニルをケ
イ化することによりＰＶＡが得られ、この時のＯＨ基が
親水基であり、第３図に）及び第３図υに示すような結
合をガラス面と持ち接着性を向上させると考えられる。As a result of forming a phosphor screen using the above specific example, as shown in Table 3 and FIG.
At 7% or higher, the phosphor dots noticeably peel off, but when the precoat liquid shown in Table 1 is used, there is no peeling of the phosphor dots at all, and a good phosphor screen is created. I confirmed that I can get it. This is because PVA is obtained by silicifying the polyacetic acid and vinyl obtained from the polymerization reaction in the above PVA manufacturing process, and the OH group at this time is a hydrophilic group. It is thought that bonding with the glass surface as shown in Figure 3 υ improves adhesion.
ＰＶＡＥＪ造過程に於いて、ＯＨ基の増加はケイ化度の
増加と比例関係であり、更に接着性が向上するものであ
る。又、ＰＶＡは平均重合度２０００〜２７００１ケイ
化度８５．０〜９８．０ ｍｏ１％で、その４％水溶液
の粘度が２０’Ｃで４５〜７０ｃｐｓとした場合にも、
良好な結果が得られるものでおる。In the PVAEJ manufacturing process, the increase in the number of OH groups is proportional to the increase in the degree of silicification, which further improves the adhesion. Furthermore, when PVA has an average degree of polymerization of 2000 to 27000 and a degree of silicification of 85.0 to 98.0 mo1%, and the viscosity of its 4% aqueous solution is 45 to 70 cps at 20'C,
This will give you good results.
（以下余白）
第３表 ドツト剥れ比較
第４表 蛍光体スラリーの組成
（以下余白）
〔発明の効果〕
本発明によれば、カラー受像管の蛍光面の蛍光体層とフ
ェースプレート内面との密着力を向上させ蛍光体層のは
がれを防止でき、更にカラー受像管の発光輝度の向上を
図ることが可能となる。(Left below) Table 3 Comparison of dot peeling Table 4 Composition of phosphor slurry (Left below) [Effects of the invention] According to the present invention, the phosphor layer of the phosphor screen of a color picture tube and the inner surface of the face plate are It is possible to improve adhesion, prevent peeling of the phosphor layer, and further improve the luminance of the color picture tube.
第１図は本発明の一実施例を示す工程図、第２図はドッ
トザイズとドツト剥れ数を示す図、第３図（Ｑ及び第３
図（ト）は本発明の詳細な説明するための模式図である
。
代理人 弁理士 則 近 患 佑
同 大胡典夫
第 １ 図
ドツト“す°ブス゛ −一−−伽
第 ２ 図Figure 1 is a process diagram showing one embodiment of the present invention, Figure 2 is a diagram showing the dot size and number of dots peeled off, and Figure 3 (Q and 3
Figure (G) is a schematic diagram for explaining the present invention in detail. Agent Patent Attorney Nori Chika Yudo Norio Ogo Figure 1 Dots ``S--1--'' Figure 2
Claims (2)
８５．０〜９８．０ｍｏｌ％であり、その４％水溶液の
粘度が２０℃で４５〜７０ｃｐｓであるプリコート溶液
をフェースプレート内面に塗布する工程と、前記プリコ
ート溶液を乾燥しプリコート膜を形成する工程と、前記
プリコート膜上に蛍光体層を形成する工程とを少なくと
も有することを特徴とするカラー受像管蛍光面の形成方
法。(1) A process of applying a precoat solution containing polyvinyl alcohol as a main component, having a degree of saponification of 85.0 to 98.0 mol%, and a 4% aqueous solution having a viscosity of 45 to 70 cps at 20°C to the inner surface of the face plate. A method for forming a color picture tube phosphor screen, comprising at least the following steps: drying the precoat solution to form a precoat film; and forming a phosphor layer on the precoat film.
０〜２７００であることを特徴とする特許請求の範囲第
１項記載のカラー受像管蛍光面の形成方法。(2) The precoat solution has an average degree of polymerization of 200
2. The method of forming a color picture tube phosphor screen according to claim 1, wherein the phosphor screen is 0 to 2,700.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3805687A JP2507393B2 (en) | 1987-02-23 | 1987-02-23 | Method for forming fluorescent screen of color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3805687A JP2507393B2 (en) | 1987-02-23 | 1987-02-23 | Method for forming fluorescent screen of color picture tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63207030A true JPS63207030A (en) | 1988-08-26 |
| JP2507393B2 JP2507393B2 (en) | 1996-06-12 |
Family
ID=12514853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3805687A Expired - Lifetime JP2507393B2 (en) | 1987-02-23 | 1987-02-23 | Method for forming fluorescent screen of color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2507393B2 (en) |
-
1987
- 1987-02-23 JP JP3805687A patent/JP2507393B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2507393B2 (en) | 1996-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3479133B2 (en) | Phosphor screen of color cathode ray tube | |
| US4651053A (en) | Display tube having printed copolymer film layer | |
| JPH0552017B2 (en) | ||
| US4612268A (en) | Method of forming phosphor pattern on fluorescent screen for color picture tubes with polymer coagulent | |
| JPS63207030A (en) | Formation of color picture tube fluorescent screen | |
| JPS6215988B2 (en) | ||
| US4681824A (en) | Method of manufacturing fluorescent screens of color picture tubes | |
| GB2221087A (en) | Method of manufacturing phosphor screens for cathode ray tubes | |
| JPH10172460A (en) | Double layer phosphor film, and manufacture thereof | |
| US6100632A (en) | Color cathode ray tube and fabrication method of fluorescent surface thereof | |
| KR930009172B1 (en) | Method of making a fluorescent screen for color crt | |
| JPS58212034A (en) | Phosphor screen and formation thereof | |
| US5936340A (en) | Display screen comprising an adhesive layer | |
| US5326588A (en) | Cathode ray tube | |
| JP3090700B2 (en) | Method for forming phosphor screen of color picture tube | |
| JPH08138549A (en) | Composition of filming liquid for cathode-ray tube and manufacture of screen film using it | |
| JPH0522746B2 (en) | ||
| JPH06101301B2 (en) | Method of forming powder layer | |
| JPH07230763A (en) | Manufacture of color cathode-by tube and forming method for layered product of water soluble polymer contained composition film | |
| KR940008548B1 (en) | Filming liquid composition of crt | |
| JPS6031060B2 (en) | Method for manufacturing color picture tube fluorescent surface | |
| EP0862199B1 (en) | Color cathode ray tube and fabrication method of fluorescent surface thereof | |
| JPS6051769B2 (en) | Method for manufacturing a fluorescent surface for color picture tubes | |
| KR100216634B1 (en) | Filming liquid material for color crt | |
| JPH0142460B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |