JPH0413809B2 - - Google Patents
Info
- Publication number
- JPH0413809B2 JPH0413809B2 JP7536382A JP7536382A JPH0413809B2 JP H0413809 B2 JPH0413809 B2 JP H0413809B2 JP 7536382 A JP7536382 A JP 7536382A JP 7536382 A JP7536382 A JP 7536382A JP H0413809 B2 JPH0413809 B2 JP H0413809B2
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- thin film
- phosphor
- metal back
- 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.)
- Expired
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 23
- 239000007864 aqueous solution Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000010409 thin film Substances 0.000 claims description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 229920000620 organic polymer Polymers 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 238000010304 firing Methods 0.000 claims 1
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- 239000003960 organic solvent Substances 0.000 description 9
- 239000004925 Acrylic resin Substances 0.000 description 8
- 229920000178 Acrylic resin Polymers 0.000 description 8
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229940035429 isobutyl alcohol Drugs 0.000 description 4
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 235000002597 Solanum melongena Nutrition 0.000 description 1
- 244000061458 Solanum melongena Species 0.000 description 1
- -1 acetate ester Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000000710 polymer precipitation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Description
【発明の詳細な説明】
本発明はけい光体層内面にアルミニウムのよう
な金属を用いたメタルバツク層を有する陰極線管
の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a cathode ray tube having a metal back layer made of a metal such as aluminum on the inner surface of a phosphor layer.
陰極線管のけい光面にアルミニウムのような金
属を蒸着してメタルバツク層を形成する場合に、
平滑なメタルバツク層すなわちフエイス部ガラス
の前方より観察するとき斑点むらの生じないメタ
ルバツク層を得るために、従来においては適当な
前処理を行なつて、塗着されたけい光体層内面の
凹凸をなくしてきた。たとえば、第１図ａに示す
ように陰極線管フエイス部ガラス１の内面に被着
されたけい光体２を水３で濡らし、水３で凹凸を
埋め、けい光体２の内面をみかけ上平滑になす。
次に第１図ｂに示すように水３の上に有機高分子
物質を溶かした溶液を噴霧状に吹きつける。その
後、水分および溶剤を蒸着させて、第１図ｃに示
すように有機高分子の薄膜４をけい光体層２の内
面上に形成する。次に薄膜４の上にアルミニウム
等の金属を蒸着して、第１図ｄに示す平滑なメタ
ルバツク層を得る。なお、有機高分子物質の薄膜
４は次の工程で加熱除去されるものである。 When forming a metal back layer by depositing a metal such as aluminum on the fluorescent surface of a cathode ray tube,
In order to obtain a smooth metal back layer, that is, a metal back layer that does not have uneven spots when observed from the front of the face glass, conventionally, an appropriate pretreatment is performed to eliminate the unevenness on the inner surface of the coated phosphor layer. I've lost it. For example, as shown in FIG. 1a, the phosphor 2 attached to the inner surface of the cathode ray tube face glass 1 is wetted with water 3, and the unevenness is filled with water 3, so that the inner surface of the phosphor 2 appears smooth. Eggplant.
Next, as shown in FIG. 1b, a solution containing an organic polymer substance is sprayed onto the water 3. Thereafter, water and solvent are deposited to form a thin organic polymer film 4 on the inner surface of the phosphor layer 2, as shown in FIG. 1c. Next, a metal such as aluminum is deposited on the thin film 4 to obtain a smooth metal back layer as shown in FIG. 1d. Note that the thin film 4 of organic polymer material is to be removed by heating in the next step.
しかしながら、けい光体表面は撥水性のため、
けい光体層２は水に十分には濡れず、けい光体層
内面の凹凸を水により完全に埋めることができな
いことがあり、メタルバツク層５も平滑とならな
いことがあつた。このため、メタルバツク層の効
果を十分に発揮できず、陰極線管の商品価値を減
じていた。 However, since the surface of the phosphor is water repellent,
The phosphor layer 2 was not sufficiently wetted with water, and the unevenness on the inner surface of the phosphor layer could not be completely filled with water, and the metal back layer 5 was also not smooth. For this reason, the effect of the metal back layer could not be fully demonstrated, reducing the commercial value of the cathode ray tube.
本発明はけい光体層に対して平滑な有機高分子
薄膜を形成する方法を提供することにある。 The present invention provides a method for forming a smooth organic polymer thin film on a phosphor layer.
本発明はけい光体層の内面を十分に濡らすため
に、水の界面張力を低下させるべく有機溶媒を含
ませるものである。さらに、この有機溶媒は有機
高分子物質の薄膜を形成する高分子に良溶媒であ
るものが良い。前記有機溶媒が、前記高分子薄膜
の良溶媒であれば、高分子薄膜が滑らかに形成で
きることが実験的に確認されている。 In the present invention, an organic solvent is included in order to reduce the interfacial tension of water in order to sufficiently wet the inner surface of the phosphor layer. Furthermore, this organic solvent is preferably one that is a good solvent for the polymer forming the thin film of the organic polymer substance. It has been experimentally confirmed that if the organic solvent is a good solvent for the polymer thin film, the polymer thin film can be formed smoothly.
第２図にメチルエチルケトンを含む水溶液、イ
ソブチルアルコールを含む水溶液を溶媒として使
用した場合の水溶液濃度と界面張力の関係を示
す。同時に水を用いた場合の界面張力を参考値と
して示す。第２図において、ａはメチルエチルケ
トンを含む水溶液を19℃で使用した場合、ｂはイ
ソブチルアルコールを含む水溶液を25℃で使用し
た場合、ｃは水を25℃で使用した場合である。 FIG. 2 shows the relationship between aqueous solution concentration and interfacial tension when an aqueous solution containing methyl ethyl ketone or an aqueous solution containing isobutyl alcohol is used as a solvent. The interfacial tension when water is used at the same time is shown as a reference value. In Figure 2, a shows the case when an aqueous solution containing methyl ethyl ketone is used at 19°C, b shows when an aqueous solution containing isobutyl alcohol is used at 25°C, and c shows when water is used at 25°C.
薄膜４を形成する材料としてアクリル樹脂の
3.5wt％を含むトルエン溶液を用いた場合の、有
機溶媒材料を比較した。有機溶媒としてメチルエ
チルケトンの4.5wt％を含む水溶液を使用した場
合と、イソブチルアルコールの1.5wt％を含む水
溶液を比較した。その結果、アクリル樹脂の良溶
媒であるメチルエチルケトンを含む水溶液の方
が、アクリル樹脂の貧溶媒であるイソブチルアル
コールを含む水溶液より良いメタルバツクを得る
ことができた。 Acrylic resin is used as the material for forming the thin film 4.
Organic solvent materials were compared when a toluene solution containing 3.5 wt% was used. A case where an aqueous solution containing 4.5 wt% of methyl ethyl ketone was used as an organic solvent was compared with an aqueous solution containing 1.5 wt% of isobutyl alcohol. As a result, a better metal bag could be obtained with an aqueous solution containing methyl ethyl ketone, which is a good solvent for acrylic resin, than with an aqueous solution containing isobutyl alcohol, which is a poor solvent for acrylic resin.
また一方、メチルエチルケトン（メチルエチル
ケトンは炭素数５である）10wt％の水溶液を用
い、アクリル樹脂3.5wt％のトルエン溶液を噴霧
液とし用いた場合、水溶液はけい光体層２を十分
濡らしたが、水溶液の界面張力が低すぎてトルエ
ン溶液が水溶液上に拡がらず局部的に溜り、有機
高分子の薄膜が局部にしか形成されなかつた。こ
のことから、有機溶媒の添加量は水溶液の界面張
力（25℃）が40dyn／cmより小さくならぬことが
条件となる。 On the other hand, when a 10 wt% aqueous solution of methyl ethyl ketone (methyl ethyl ketone has 5 carbon atoms) and a toluene solution of 3.5 wt% acrylic resin were used as the spray liquid, the aqueous solution sufficiently wetted the phosphor layer 2, but the aqueous solution Because the interfacial tension of the toluene solution was too low, the toluene solution did not spread over the aqueous solution and pooled locally, and a thin organic polymer film was formed only locally. From this, the amount of organic solvent added must be such that the interfacial tension (at 25° C.) of the aqueous solution does not become smaller than 40 dyn/cm.
一方、ケトン類、一価アルコールと酢酸のエス
テル類は炭素数が８以上になると、これら有機溶
媒は水に対する溶解性が乏しくなり、界面張力低
下効果を示さない。また炭素数が８以上となると
沸点が200℃近くなり、蒸発が遅すぎて製造上不
都合となる。 On the other hand, when ketones and esters of monohydric alcohol and acetic acid have 8 or more carbon atoms, these organic solvents have poor solubility in water and do not exhibit an interfacial tension lowering effect. Furthermore, if the number of carbon atoms is 8 or more, the boiling point will be close to 200°C, and evaporation will be too slow, which will be inconvenient in production.
なお、けい光体層を濡らす水が保持されやすく
して製造を容易にするために、高分子水溶液を用
いる方法が提案されているが、この高分子の析出
を起さねば本提案の有機溶媒と高分子を同時に含
む水溶液をけい光体層を濡らす液に使用しても良
い。 Note that a method using an aqueous polymer solution has been proposed in order to facilitate the retention of water that wets the phosphor layer and facilitate manufacturing, but if this polymer precipitation does not occur, the organic solvent of this proposal cannot be used. An aqueous solution containing both a phosphor and a polymer may be used as the liquid for wetting the phosphor layer.
以下、本発明の実施例を示す。第３図ａに示す
ように陰極線管のフエイス部ガラス６の内面にけ
い光体粉末を塗布してけい光体層７を形成する。
次に第３図ｂに示すように、けい光体層７の上に
酢酸エチル2.5％を含む水溶液を注入して均一な
水溶液層８を形成する。次にアクリル樹脂3.5wtl
％を含むトルエン溶液を水溶液層８上に噴霧状に
吹きつける。この状態を第３図ｃに示す。その
後、第３図ｄに示すように、水分、トルエンを蒸
発させ、アクリル樹脂の薄膜９をけい光体層７の
上に形成する。この薄膜上にアルミニウムを蒸着
して、第３図ｅに示すようにメタルバツク層１０
を得る。この後、加熱により、アクリル樹脂の薄
膜９を分解する。 Examples of the present invention will be shown below. As shown in FIG. 3a, phosphor powder is applied to the inner surface of the face glass 6 of the cathode ray tube to form a phosphor layer 7.
Next, as shown in FIG. 3b, an aqueous solution containing 2.5% ethyl acetate is injected onto the phosphor layer 7 to form a uniform aqueous solution layer 8. Next acrylic resin 3.5wtl
% toluene solution is sprayed onto the aqueous solution layer 8. This state is shown in FIG. 3c. Thereafter, as shown in FIG. 3d, water and toluene are evaporated, and a thin film 9 of acrylic resin is formed on the phosphor layer 7. Aluminum is deposited on this thin film to form a metal back layer 10 as shown in FIG. 3e.
get. Thereafter, the acrylic resin thin film 9 is decomposed by heating.
なお、本実施例に用いた酢酸エチルは、酢酸と
エチルアルコールの化合物である酢酸エステルで
ある。またエチルアルコールは一価のアルコール
である。本実施例で用いた酢酸エチルは炭素数は
５個で沸点は77℃であり、蒸発時間等での工程上
の問題は無い、水溶液濃度は8.7wt％であり、水
溶液は水に比較して界面張力が低いために、けい
光体層７を十分に濡らすことができ、かつアクリ
ル樹脂に対しては良溶媒である。 Note that ethyl acetate used in this example is acetate ester, which is a compound of acetic acid and ethyl alcohol. Moreover, ethyl alcohol is a monohydric alcohol. Ethyl acetate used in this example has 5 carbon atoms and a boiling point of 77°C, so there are no problems with the process such as evaporation time, and the concentration of the aqueous solution is 8.7wt%. Since the interfacial tension is low, the phosphor layer 7 can be sufficiently wetted, and it is a good solvent for acrylic resin.
このような上記方法によつて、撥水性のあるけ
い光体粒子よりなるけい光体層に対して十分効果
を発揮できる平滑なメタルバツク層を形成でき
る。 By the method described above, a smooth metal back layer can be formed that is sufficiently effective for a phosphor layer made of water-repellent phosphor particles.
第１図ａ〜ｄは従来のけい光面にメタルバツク
を形成する方法を説明するための陰極線管のフエ
イス部の一部の断面図、第２図は有機溶媒の濃度
とその水溶液の界面張力を示した図、第３図ａ〜
ｅは本発明のけい光面にメタルバツクを形成する
方法を説明するための陰極線管のフエイス部の一
部の断面図である。
６……フエイス部ガラス、７……けい光体層、
８……水溶液層、９……薄膜、１０……メタルバ
ツク層。
Figures 1a to d are cross-sectional views of a part of the face of a cathode ray tube to explain the conventional method of forming a metal back on a fluorescent surface, and Figure 2 shows the concentration of an organic solvent and the interfacial tension of its aqueous solution. Figure 3 a~
FIG. 3e is a sectional view of a part of the face portion of a cathode ray tube for explaining the method of forming a metal back on a fluorescent surface according to the present invention. 6... Face portion glass, 7... Fluorescent layer,
8...Aqueous solution layer, 9...Thin film, 10...Metal back layer.
Claims (1)
し、このけい光体層内面上を炭素数７以下のケト
ンまたは１価アルコールと酢酸からなる炭素数７
以下のエステルを含む水溶液で濡らした後、有機
高分子物質の薄膜をこの水溶液の上に形成し、こ
の薄膜上にメタルバツク層を形成後焼成処理する
ことを特徴とするメタルバツク陰極線管の製造方
法。1. A phosphor is coated on the inner surface of the face of a cathode ray tube, and on the inner surface of this phosphor layer, a carbon number of 7 or less consisting of a ketone with a carbon number of 7 or less or a monohydric alcohol and acetic acid is coated.
A method for producing a metal back cathode ray tube, which comprises: wetting it with an aqueous solution containing the following ester, forming a thin film of an organic polymer substance on the aqueous solution, forming a metal back layer on the thin film, and then firing it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7536382A JPS58192242A (en) | 1982-05-07 | 1982-05-07 | Manufacture of metal backing cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7536382A JPS58192242A (en) | 1982-05-07 | 1982-05-07 | Manufacture of metal backing cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58192242A JPS58192242A (en) | 1983-11-09 |
| JPH0413809B2 true JPH0413809B2 (en) | 1992-03-10 |
Family
ID=13574057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7536382A Granted JPS58192242A (en) | 1982-05-07 | 1982-05-07 | Manufacture of metal backing cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58192242A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01206539A (en) * | 1988-02-13 | 1989-08-18 | Nec Kansai Ltd | Formation of lacquer film |
-
1982
- 1982-05-07 JP JP7536382A patent/JPS58192242A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58192242A (en) | 1983-11-09 |
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