JPS634533A - Manufacture of fluorescent screen - Google Patents
Manufacture of fluorescent screenInfo
- Publication number
- JPS634533A JPS634533A JP14856886A JP14856886A JPS634533A JP S634533 A JPS634533 A JP S634533A JP 14856886 A JP14856886 A JP 14856886A JP 14856886 A JP14856886 A JP 14856886A JP S634533 A JPS634533 A JP S634533A
- Authority
- JP
- Japan
- Prior art keywords
- lid
- panel
- screen
- valve
- space
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000001291 vacuum drying Methods 0.000 claims abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 abstract description 7
- 229920006395 saturated elastomer Polymers 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007613 slurry method 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、スラリー法によりカラーブラウン管蛍光膜の
製作方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a color cathode ray tube fluorescent film by a slurry method.
カラーブラウン管の蛍光面製作方法として、例えば次の
ような方法が用いらている。パネル内面を弗酸、水等で
清浄後、ポリビニルアルコールと重クロム酸ナトリウム
を主成分とするフオトレジス１〜を塗布し、高速回転に
よりパネル内面におけるフォトレジストの膜厚を−・様
のものにし、遠赤外線ヒータ、ニアブロワ−等で乾燥さ
せ、パネルにシャドウマスクを装着して緑、青、赤の各
蛍光体が付着する位置を露光する。次に水で現像し、露
光していない部分のフォトレジストを除去し、黒鉛を塗
布、乾燥し、過酸化水素水を主成分とする液でエツチン
グし、水洗いを行う。これらの工程を経て、緑、青、赤
蛍光体が付着する部分以外に黒鉛が付着した、いわゆる
ブラックマトリクス１漠が形成される。この後、ポリビ
ニルアルコール水溶液に重クロム酸アンモニウム溶液を
加えた液に、線蛍光体の懸濁させたスラリーを塗布、乾
燥し、所定のシャドウマスクを装着して露光を行い、温
水で現像して所定の位置に緑蛍光体パターンな形成する
。青、赤蛍光体についても同様にパターンを形成後、フ
ィルミング液を塗布乾燥し、フィミング１摸を形成して
蛍光面が完成する。For example, the following method is used to manufacture the phosphor screen of a color cathode ray tube. After cleaning the inner surface of the panel with hydrofluoric acid, water, etc., apply photoresist 1~ containing polyvinyl alcohol and sodium dichromate as main components, and make the photoresist film thickness on the inner surface of the panel similar to - by rotating at high speed. The panel is dried using a far-infrared heater, a near blower, etc., and a shadow mask is attached to the panel to expose the positions where the green, blue, and red phosphors are to be attached. Next, it is developed with water to remove the photoresist in the unexposed areas, coated with graphite, dried, etched with a solution containing hydrogen peroxide as its main component, and washed with water. Through these steps, a so-called black matrix is formed in which graphite is attached to areas other than those to which the green, blue, and red phosphors are attached. After this, a slurry containing a suspended linear phosphor is applied to a polyvinyl alcohol aqueous solution and an ammonium dichromate solution, dried, exposed to light with a prescribed shadow mask attached, and developed with warm water. Form a green phosphor pattern at a predetermined position. After forming patterns in the same manner for the blue and red phosphors, a filming liquid is applied and dried to form one copy of the filming to complete the phosphor screen.
上述のように、蛍光膜の形成工程には数回の乾燥工程が
含まれるが、従来は回転、遠赤外線ヒー夕、ニアブロワ
−等を組合わせてこれを行っている。このため、乾燥時
間の総計は７分以上にもなり、また、ヒータ温度、ブロ
ワ−風量等について細かな調節を要した。As mentioned above, the process of forming a fluorescent film includes several drying steps, which are conventionally carried out using a combination of rotation, far-infrared heaters, near blowers, etc. Therefore, the total drying time was 7 minutes or more, and detailed adjustments were required for the heater temperature, blower air volume, etc.
本発明は、カラーブラウン管の蛍光膜の形成工程に真空
乾燥を導入することにより、コントロールが容易で、か
つ短時間での乾燥を実現しようとするものである。The present invention aims to realize drying that is easy to control and takes a short time by introducing vacuum drying into the process of forming the fluorescent film of a color cathode ray tube.
〔実施例］
次に、本発明について、実施例を用いて説明する。第１
図は本発明の実施例の概略図である。１はパネルに密着
する形状の蓋で、真空ポンプ２に接続され、シリンダ３
により移動する。高速回転により膜厚を均一にしたパネ
ル４に、蓋１を圧し着け、弁５を開放し真空ポンプ２に
よりパネル４と蓋１による空間１０の空気、水蒸気を排
気する。[Example] Next, the present invention will be described using an example. 1st
The figure is a schematic diagram of an embodiment of the invention. 1 is a lid that fits closely to the panel, is connected to the vacuum pump 2, and is connected to the cylinder 3.
Move by. A lid 1 is pressed onto a panel 4 whose film thickness has been made uniform by high-speed rotation, a valve 5 is opened, and air and water vapor in a space 10 between the panel 4 and the lid 1 are evacuated by a vacuum pump 2.
このとき空間１０の気圧が飽和蒸気圧３示になると、蛍
光膜７中の水が気化し、膜が乾燥される。At this time, when the atmospheric pressure in the space 10 reaches a saturated vapor pressure of 3, the water in the fluorescent film 7 is vaporized and the film is dried.
完了時は弁５を閉鎖、リーク弁６を開き、蓋１を後退さ
せる。１４吋パネルの場合を例にとると、乾燥工程で１
、５ ｍｇ／ｃｍ２総量１．４１ｇ（塗布面積９３８
ｃ＋ａ２）の水を除去することが粂件となっている。第
２図の曲線２１は温度に対する飽和蒸気圧３示したもの
で、単位はｋＰａ （１キロパスカル＝７．５Ｔｏｒｒ
）である。パネル温度３０°Ｃ−定とすれば、飽和蒸気
圧は４．２４１ｋＰａ （３１，８Ｔｏｒｒ）になる。Upon completion, the valve 5 is closed, the leak valve 6 is opened, and the lid 1 is moved back. For example, in the case of a 14-inch panel, 1
, 5 mg/cm2 total amount 1.41 g (applied area 938
It is important to remove the water in c+a2). Curve 21 in Figure 2 shows the saturated vapor pressure 3 versus temperature, and the unit is kPa (1 kilopascal = 7.5 Torr).
). If the panel temperature is constant at 30°C, the saturated vapor pressure will be 4.241 kPa (31.8 Torr).
使用するポンプを排気速度Ｖ ｓ （ｅ ／ ｍ ｉ
ｎ ＞ 、回転数Ｒ（ｒｐｍ）の回転ポンプとし、空間
１０の容積をＶ丁とすると、排気速度Ｖｓ−定の範囲で
あるから、を秒後の圧力は次式で表される。The pump used is pumped at the pumping speed V s (e/m i
n>, the rotation speed R (rpm) is a rotary pump, and the volume of the space 10 is V, the pumping speed is within a constant range of Vs, so the pressure after Vs is expressed by the following equation.
第２図の曲線２２は、’ｖ’ ｓ ＝ ３００１ 、／
’ ｍ ｉ ｎ（５ｅ 、、’ Ｓ ） 、 Ｒ＝ ４
２０ ｒ ｐ ｍ 、Ｖ Ｔ ＝ ５１’ 。Curve 22 in FIG. 2 shows 'v' s = 3001, /
'min(5e,,'S), R=4
20 rpm, V T = 51'.
初期圧力Ｐｏ＝１０１．３２５ｋＰａ （標準大気圧）
としたときの圧力変化を時間軸と左向きにとって表した
もので、３．４秒後に４．２４０ＫＰａに達する。この
後は水蒸気により圧力は４．２４１ ｋＰａ−定で排気
するとみなせる。３０°Ｃにおいては、水蒸気の密度は
３０．３７ｒａｇ、／ｅであるから、１．４１ｇの水蒸
気の体積は４６．４ｇとなり、Ｖ ｓ ＝ ５１ 、／
ｓより９．３秒間で排気される。したがって、３．４
＋９．３＝１２．７秒排気すればよい。以上の計算に基
づき実験を行ない、蛍光膜の水分量を測定した結果、１
．４４Ｊ、１０１１１２の水が除去された。Initial pressure Po=101.325kPa (standard atmospheric pressure)
This graph shows the pressure change when the pressure changes to the left with respect to the time axis, and reaches 4.240 KPa after 3.4 seconds. After this, it can be assumed that the pressure is 4.241 kPa-constant and exhausted due to water vapor. At 30°C, the density of water vapor is 30.37 rag, /e, so the volume of 1.41 g of water vapor is 46.4 g, and V s = 51, /
It is exhausted in 9.3 seconds from s. Therefore, 3.4
It is sufficient to exhaust the air for +9.3=12.7 seconds. Based on the above calculations, we conducted an experiment and measured the moisture content of the fluorescent film.
．． 44 J, 101,112 of water was removed.
以上説明したように、本発明によるカラー受像管の蛍光
膜の製作方法は、真空乾燥を利用することにより、設偏
を合理化し、また乾燥時間を従来の７分から１分半程度
に短縮できる効果がある。As explained above, the method of manufacturing a phosphor film for a color picture tube according to the present invention has the advantage of rationalizing the installation process and shortening the drying time from the conventional 7 minutes to about 1 and a half minutes by using vacuum drying. There is.
第１図は本発明に用いる乾燥装置の概略図、第２図は圧
力線図である。
１・・・蓋、２・・・真空ポンプ、３・・シリンダ、４
・・・パネル、５・・・弁、６・・・リーク弁、７・・
・蛍光膜、１０・・・パネルと蓋による空間。FIG. 1 is a schematic diagram of a drying apparatus used in the present invention, and FIG. 2 is a pressure diagram. 1...Lid, 2...Vacuum pump, 3...Cylinder, 4
...Panel, 5...Valve, 6...Leak valve, 7...
- Fluorescent film, 10...Space created by panel and lid.
Claims (1)
を含むことを特徴とする蛍光膜の製作方法。A method for producing a phosphor film for a color picture tube, the method comprising the step of vacuum drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14856886A JPS634533A (en) | 1986-06-24 | 1986-06-24 | Manufacture of fluorescent screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14856886A JPS634533A (en) | 1986-06-24 | 1986-06-24 | Manufacture of fluorescent screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS634533A true JPS634533A (en) | 1988-01-09 |
Family
ID=15455653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14856886A Pending JPS634533A (en) | 1986-06-24 | 1986-06-24 | Manufacture of fluorescent screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS634533A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63136440A (en) * | 1986-11-26 | 1988-06-08 | Sony Corp | Drying method in fluorescent screen forming process |
| JPH01255127A (en) * | 1988-04-01 | 1989-10-12 | Nec Kansai Ltd | Method for forming fluorescent screen |
-
1986
- 1986-06-24 JP JP14856886A patent/JPS634533A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63136440A (en) * | 1986-11-26 | 1988-06-08 | Sony Corp | Drying method in fluorescent screen forming process |
| JPH01255127A (en) * | 1988-04-01 | 1989-10-12 | Nec Kansai Ltd | Method for forming fluorescent screen |
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