JPH0370333B2 - - Google Patents
Info
- Publication number
- JPH0370333B2 JPH0370333B2 JP55159462A JP15946280A JPH0370333B2 JP H0370333 B2 JPH0370333 B2 JP H0370333B2 JP 55159462 A JP55159462 A JP 55159462A JP 15946280 A JP15946280 A JP 15946280A JP H0370333 B2 JPH0370333 B2 JP H0370333B2
- Authority
- JP
- Japan
- Prior art keywords
- panel
- alkaline solution
- film
- resin film
- baking
- 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 - Lifetime
Links
- 239000010408 film Substances 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 27
- 239000012670 alkaline solution Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000010409 thin film Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims 1
- 239000011347 resin Substances 0.000 description 22
- 229920005989 resin Polymers 0.000 description 22
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- 239000004925 Acrylic resin Substances 0.000 description 6
- 229920000178 Acrylic resin Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000001488 sodium phosphate Substances 0.000 description 3
- 229910000162 sodium phosphate Inorganic materials 0.000 description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 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
- 238000004380 ashing Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/26—Sealing together parts of vessels
- H01J9/263—Sealing together parts of vessels specially adapted for cathode-ray tubes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Description
【発明の詳細な説明】
本発明は陰極線管の製造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 cathode ray tube.
陰極線管、特にカラー受像管はバルブを構成す
るフエースパネルの内面のけい光面に電子ビーム
を衝突させて所定パターンの画像を表示するもの
で、次のようにして製造される。すなわち、第１
図ａの如く、パネル１内にけい光体粒子と感光性
結合剤（例えばポリビニルアルコールと重クロム
酸アンモニウム）との混合物（スラリー）２を注
入する。次にパネル１を低速で回転させ、スラリ
ー２をパネル１内に一様に拡げる。続いて第１図
ｂの如く、パネル１を高速で回転させ、その遠心
力で余剰のスラリー２をパネル１外に飛散させ
る。次にパネル内面に均一に形成されたけい光膜
を乾燥させた後、シヤドウマスクを通して所定の
位置を露光する。次に現像を行ない露光した部分
のけい光体層のみを残す。このようにして受像管
の電子ビームの射突する位置にけい光体を含む絵
素が写真焼付けされる。このような手法を３回繰
返して赤、青、緑３色に発光するけい光体絵素の
連続したけい光膜を作る。通常、陰極線管では、
上記けい光膜に電子ビームが衝突すると、バルブ
のフエースパネル方向のみならずネツク方向にも
発光する。このネツク方向に発光された光を有効
に利用するために、上記けい光膜上に金属薄膜を
形成し、この金属薄膜の鏡面効果により上記ネツ
ク方向に向かう光をフエースパネル方向に反射さ
せて、けい光面の明るさを向上させることが行な
われている。しかしながら、上記けい光膜はけい
光体粒子が重なつているため凹凸な表面状態とな
つており、そのけい光膜上に直接金属薄膜を形成
するとこの金属薄膜自体も凹凸な表面が形成され
ることになり、光の反射効率が損なわれる。この
ため上記けい光膜上には予めフイルミングと称す
る平滑な樹脂膜を形成した後、その上に金属薄膜
を形成してこの金属薄膜の表面を平滑にすること
で光の反射効率を上げている。 A cathode ray tube, particularly a color picture tube, displays an image in a predetermined pattern by colliding an electron beam with a fluorescent surface on the inner surface of a face panel constituting a bulb, and is manufactured in the following manner. That is, the first
As shown in Figure a, a mixture (slurry) 2 of phosphor particles and a photosensitive binder (for example polyvinyl alcohol and ammonium dichromate) is injected into the panel 1. Next, the panel 1 is rotated at a low speed to uniformly spread the slurry 2 inside the panel 1. Subsequently, as shown in FIG. 1b, the panel 1 is rotated at high speed, and the excess slurry 2 is scattered outside the panel 1 by the centrifugal force. Next, after drying the luminescent film uniformly formed on the inner surface of the panel, predetermined positions are exposed to light through a shadow mask. Next, development is performed to leave only the exposed portions of the phosphor layer. In this way, picture elements containing phosphors are photoprinted at the positions of the picture tube where the electron beams strike. This method is repeated three times to create a continuous phosphor film of phosphor pixels that emit light in three colors: red, blue, and green. Typically, in cathode ray tubes,
When an electron beam collides with the fluorescent film, light is emitted not only in the direction of the face panel of the bulb but also in the direction of the neck. In order to effectively utilize the light emitted in the neck direction, a metal thin film is formed on the fluorescent film, and the mirror effect of this metal thin film causes the light directed in the neck direction to be reflected toward the face panel. Efforts have been made to improve the brightness of fluorescent surfaces. However, the above-mentioned fluorescent film has an uneven surface because the phosphor particles overlap, and if a metal thin film is directly formed on the fluorescent film, this metal thin film itself will also have an uneven surface. As a result, the light reflection efficiency is impaired. For this reason, a smooth resin film called filming is formed on the above-mentioned fluorescent film in advance, and then a metal thin film is formed on top of it, and the surface of this metal thin film is made smooth to increase light reflection efficiency. .
ここで、上記樹脂膜は一般に次のようにして形
成する。すなわち、アクリル樹脂を主成分とする
水性アクリルエマルジヨン液を第１図に示すけい
光体スラリー２と同様の手法で塗布、パネルの高
速回転、乾燥により樹脂膜を作る。 Here, the resin film is generally formed as follows. That is, a resin film is formed by applying an aqueous acrylic emulsion liquid containing acrylic resin as a main component in the same manner as the phosphor slurry 2 shown in FIG. 1, rotating the panel at high speed, and drying.
ここで、上記アクリルエマルジヨン液は一般に
水性塗料として市販されており、これに含まれて
いるアクリル樹脂の粒子径が0.05μｍ程度とかな
り細かいので、熱分解し易く、また加熱乾燥する
とアクリル樹脂の粒子相互で融着し、連続した平
滑な皮膜を形成し易い性質をもつものである。 The above-mentioned acrylic emulsion liquid is generally commercially available as a water-based paint, and since the particle size of the acrylic resin contained in it is quite fine, about 0.05 μm, it is easily thermally decomposed, and when heated and dried, the acrylic resin is The particles tend to fuse together and form a continuous, smooth film.
また他の手法として、第２図の如くパネル１を
横向きにして回転しながらノズル３よりエマルジ
ヨン液４を吐出し、パネル１内に塗布し、次に高
速回転でパネル内面に均一なエマルジヨン膜を作
り、乾燥して樹脂膜を作ることが行なわれてい
る。 As another method, as shown in Fig. 2, the emulsion liquid 4 is discharged from the nozzle 3 while rotating with the panel 1 sideways, coating the inside of the panel 1, and then rotating at high speed to form a uniform emulsion film on the inner surface of the panel. The process is to create a resin film by preparing and drying the resin film.
次に、上記したけい光体粒子と混合させたポリ
マーや、平滑な金属薄膜を施すために用いたアク
リル樹脂などの有機物を分解するために、前記パ
ネルを炉内に入れて高温で加熱処理する。これを
パネルベーキングという。このような工程を経た
後、第３図に示すように前記パネル１と漏斗状の
フアンネル５とを低融点ハンダガラス（以下フリ
ツトガラスという）６を介して組合せ、この状態
で炉内に入れて高温で加熱処理すると、フリツト
ガラス６は溶融、結晶化して融着する。これによ
り、パネル１とフアンネル５とは密閉状態に一体
化され、バルブを形成する。この加熱処理をフリ
ツトベーキングという。更に前記バルブのネツク
に電子銃を取付けた後、バルブ内の気体を排気し
てバルブ内を高真空状態にする。以上の工程を経
てカラー受像管は製造される。 Next, the panel is placed in a furnace and heated at a high temperature in order to decompose the polymer mixed with the phosphor particles described above and the organic material such as the acrylic resin used to apply the smooth metal thin film. . This is called panel baking. After going through these steps, as shown in Fig. 3, the panel 1 and the funnel-shaped funnel 5 are assembled via a low melting point solder glass (hereinafter referred to as frit glass) 6, and in this state, they are placed in a furnace and heated to a high temperature. When heated, the frit glass 6 is melted, crystallized, and fused. Thereby, the panel 1 and the funnel 5 are integrated in a sealed state to form a valve. This heat treatment is called frit baking. Furthermore, after attaching an electron gun to the neck of the valve, the gas inside the valve is exhausted to bring the inside of the valve into a high vacuum state. A color picture tube is manufactured through the above steps.
ここで、前記パネルベーキングと前記フリツト
ベーキングとは、熱処理条件が似ていることから
両者の機能を兼用させ、一つの炉で行なうことが
実施されている。この場合、パネル１とフアンネ
ル５の接合部のパネルシール面の汚れを除去する
ことが困難となり、このシール面の汚れがフリツ
トガラス６のガラスへと融着力を低下させ、フリ
ツトガラス融着部の耐電圧、耐衝撃強度など受像
管として必要な特製が低下する現像を引起すよう
になる。このことを以下更に詳記する。 Here, since the heat treatment conditions for the panel baking and the frit baking are similar, the functions of the panel baking and the frit baking are performed in one furnace. In this case, it becomes difficult to remove the dirt on the panel sealing surface at the joint between the panel 1 and the funnel 5, and this dirt on the sealing surface lowers the fusing strength to the glass of the frit glass 6, and the withstand voltage of the frit glass fused part. This will cause the development to deteriorate the special properties necessary for a picture tube, such as impact resistance strength. This will be explained in more detail below.
第１図の方法では、パネル１のパネルシール面
１ａにはエマルジヨン液はわずか塗布されるのみ
であるが、第２図の方法では、パネルシール面１
ａも完全にエマルジヨン液４が塗布される。この
状態でパネル１内にけい光膜を作るために加熱乾
燥すると、パネルシール面１ａにも樹脂皮膜が形
成される。この樹脂皮膜は接着強度および硬度の
高いアクリル樹脂であるため機械的に除去するこ
とが困難となる。この樹脂皮膜の除去する方法と
して、弗化水素、弗化アンモニウム等の弗酸溶液
を用いて除去する方法がある。しかし、このよう
な弗酸溶液を使用しても、上記アクリル系の樹脂
皮膜は耐酸性が強いため、弗酸溶液とのなじみが
弱く、この樹脂皮膜を溶解または膨潤させ難くな
りこれを十分に除去することができない。更に他
の方法として、有機溶剤、例えばトルエン、アセ
トンなどの引火性溶剤で溶解除去する方法もあ
る。しかし、有機溶剤を使用した場合、防災上、
安全衛生上などの問題を対策するための高価な設
備が必要となり不適当である。またパネルシール
面１ａに樹脂皮膜が形成された状態で第３図で説
明したようにフリツトベーキングを行なうと、パ
ネルシール面１ａに付着した樹脂分が炉内の加熱
により熱分解する際に酸素を消費する。このため
分解ガスは酸素濃度を低下（還元雰囲気）させ
る。従つて、フリツトガラス６の主成分である酸
化鉛（PbO）は還元され、金属鉛に変化する。こ
れにより、フリツトガラス６の流動性低下に伴う
パネル１およびフアンネル５への溶着力低下、ま
たは金属鉛析出に伴う耐電気絶縁性低下などを起
し、受像管として使用できなくなる問題が生じ
る。 In the method shown in FIG. 1, only a small amount of emulsion liquid is applied to the panel sealing surface 1a of the panel 1, but in the method shown in FIG.
Emulsion liquid 4 is also completely applied to area a. In this state, when heating and drying is performed to form a fluorescent film inside the panel 1, a resin film is also formed on the panel sealing surface 1a. Since this resin film is made of acrylic resin with high adhesive strength and hardness, it is difficult to mechanically remove it. As a method for removing this resin film, there is a method of removing it using a hydrofluoric acid solution such as hydrogen fluoride or ammonium fluoride. However, even if such a hydrofluoric acid solution is used, since the acrylic resin film has strong acid resistance, it is poorly compatible with the hydrofluoric acid solution, making it difficult to dissolve or swell the resin film. cannot be removed. Still another method is to dissolve and remove it with an organic solvent, for example a flammable solvent such as toluene or acetone. However, when using organic solvents, for disaster prevention reasons,
It is inappropriate because it requires expensive equipment to deal with health and safety issues. Furthermore, if frit baking is performed as explained in FIG. 3 with a resin film formed on the panel sealing surface 1a, oxygen consume. Therefore, the decomposed gas lowers the oxygen concentration (reducing atmosphere). Therefore, lead oxide (PbO), which is the main component of the frit glass 6, is reduced and changed to metallic lead. This causes problems such as a decrease in the welding strength to the panel 1 and the funnel 5 due to a decrease in the fluidity of the frit glass 6, and a decrease in electrical insulation resistance due to the precipitation of metallic lead, making it impossible to use it as a picture tube.
本発明はかかる背景に立つてなされたもので、
パネルシール面に付着した有機質膜を容易に除去
することができる有機質膜除去工程を備えた陰極
線管の製造方法を提供することを目的とする。 The present invention was made against this background.
It is an object of the present invention to provide a method for manufacturing a cathode ray tube, which includes an organic film removal step that can easily remove an organic film attached to a panel seal surface.
以下、本発明を図示の実施例により説明する。 Hereinafter, the present invention will be explained with reference to illustrated embodiments.
第４図は本発明の方法の一実施例を示す。同図
ａに示すように、前記した方法によつて内面にけ
い光体層、フイルミング膜および金属薄膜が順次
形成されたパネル１のパネルシール面１ａを３重
量％の水酸化ナトリウムと１重量％のリン酸ナト
リウムを含むアルカリ溶液１０に約３分間浸漬す
る。これによりパネルシール面１ａに付着した樹
脂皮膜は膨潤しはがれ易くなる。次に同図ｂに示
すようにパネルシール面１ａを水１１に浸漬し、
布、皮またはゴム等の材質よりなる円筒１２上を
矢印方向にすべらせてパネルシール面１ａを拭き
取ると、樹脂皮膜は除去される。次にパネルシー
ル面１ａを水洗してアルカリ分を除く。ここで、
円筒１２の代りに曲面筒または平面筒を用いても
よいが、円筒１２の場合は、円筒１２をパネル１
の進行方向と逆方向に回転されると、更に効果的
である。 FIG. 4 shows an embodiment of the method of the invention. As shown in Figure a, the panel sealing surface 1a of the panel 1, on which a phosphor layer, a filming film, and a metal thin film have been sequentially formed on the inner surface by the method described above, is mixed with 3% by weight of sodium hydroxide and 1% by weight. of sodium phosphate for about 3 minutes. As a result, the resin film adhering to the panel sealing surface 1a swells and becomes easy to peel off. Next, as shown in Figure b, the panel sealing surface 1a is immersed in water 11,
When the panel seal surface 1a is wiped by sliding it in the direction of the arrow on the cylinder 12 made of a material such as cloth, leather, or rubber, the resin film is removed. Next, the panel seal surface 1a is washed with water to remove alkaline content. here,
A curved cylinder or a flat cylinder may be used instead of the cylinder 12, but in the case of the cylinder 12, the cylinder 12 is connected to the panel 1.
It is even more effective if it is rotated in the direction opposite to the direction in which it travels.
このように、パネルシール面の樹脂皮膜をアル
カリ溶液で膨潤させて除去し、その後水洗により
アルカリ分を除くので、パネルシール面１ａの汚
れを容易に除去でき、また洗浄液の残らない清浄
なパネルシール面１ａが得られる。またこの方法
は、アルカリ溶液槽、水槽を隣接して配設し、パ
ネルをこれらの槽に順次搬送することにより行な
われるので、自動化が可能で大量生産に適してい
る。 In this way, the resin film on the panel seal surface is swollen with an alkaline solution and removed, and then washed with water to remove the alkaline content, making it possible to easily remove dirt from the panel seal surface 1a and to create a clean panel seal without any cleaning fluid remaining. Surface 1a is obtained. Furthermore, this method is carried out by arranging an alkaline solution tank and a water tank adjacent to each other and sequentially transporting the panels to these tanks, so automation is possible and suitable for mass production.
またアルカリ溶液１０中で超音波をかけ、次に
単に水洗するか、またはアルカリ溶液１０中は単
に浸漬するだけで、次に超音波をかけながら水洗
しても前記実施例と同等のパネルシール面洗浄効
果が得られる。 Furthermore, the panel seal surface can be obtained by applying ultrasonic waves in alkaline solution 10 and then simply washing with water, or by simply immersing it in alkaline solution 10 and then washing with water while applying ultrasonic waves. A cleaning effect can be obtained.
第６図はアルカリ溶液に含まれているアルカリ
濃度とパネルシール面に付着した樹脂皮膜の除去
率との関係を示す。同図において、樹脂皮膜除去
率100％とは、パネルシール面１ａに付着した樹
脂皮膜が完全にはがれた状態を示す。ここで、こ
の樹脂皮膜除去率が各々異なつた状態で、上記第
３図に示したようにパネル１とフアンネル５とフ
リツトガラス６を介して組合せベーキングを行つ
たところ、前記樹脂皮膜除去率が50％を下ると前
記フリツトガラス６のパネル１およびフアンネル
５への溶着力が低下し、耐電圧、耐衝撃強度等受
像管として必要な特性が低下する現象を引き起こ
した。よつて第６図に示すように、アルカリ溶液
の濃度が0.5重量％以下ではパネルシール面に付
着した樹脂皮膜の除去率が50％以下となるので、
受像管として使用できなくなるという問題が生じ
好ましくない。 FIG. 6 shows the relationship between the alkali concentration contained in the alkaline solution and the removal rate of the resin film attached to the panel seal surface. In the figure, a resin film removal rate of 100% indicates a state in which the resin film adhering to the panel sealing surface 1a has been completely peeled off. Here, when the combination baking was performed through the panel 1, the funnel 5, and the frit glass 6 as shown in FIG. 3 above, the resin film removal rate was 50%. If the temperature decreases, the adhesion strength of the frit glass 6 to the panel 1 and the funnel 5 decreases, causing a phenomenon in which the characteristics necessary for a picture tube, such as withstand voltage and impact strength, decrease. Therefore, as shown in Figure 6, if the concentration of the alkaline solution is 0.5% by weight or less, the removal rate of the resin film attached to the panel seal surface will be 50% or less.
This is undesirable because it causes the problem that it cannot be used as a picture tube.
第７図はアルカリ溶液の濃度と水洗によりパネ
ルシール面のアルカリ分を除去する時間との関係
を示す。同図において、水洗によるアルカリ除去
時間とは、パネルシール面に残存しているアルカ
リ洗浄液が完全に取り除かれるのに要する時間を
示す。同図に示すように、アルカリ溶液の濃度が
10重量％以上になるとアルカリ分を除去するのに
６分以上もの時間がかかり、一つの工程の一部で
これだけの時間を費やすと、製造工程の自動化に
よるカラー受像管の大量生産を行う上で、大幅な
ロスが生じて稼働率が低下し望ましくない。また
アルカリ溶液１０は加熱した方がパネルシール面
の樹脂皮膜がより早く膨潤し好ましいが、溶液温
度が高くなると、蒸気によりパネル内面に形成さ
れたけい光膜中の樹脂皮膜およびその上に施すメ
タルバツクを変質させるので、35℃以下が望まし
い。 FIG. 7 shows the relationship between the concentration of the alkaline solution and the time required to remove the alkaline content from the panel seal surface by washing with water. In the figure, the alkali removal time by water washing indicates the time required for the alkaline cleaning solution remaining on the panel seal surface to be completely removed. As shown in the figure, the concentration of alkaline solution is
If the alkali content exceeds 10% by weight, it will take more than 6 minutes to remove the alkaline content, and if this amount of time is spent on one part of the process, it will be difficult to mass produce color picture tubes by automating the manufacturing process. This is undesirable as a large amount of loss occurs and the operating rate decreases. Furthermore, it is preferable to heat the alkaline solution 10 because the resin film on the panel sealing surface will swell more quickly, but if the solution temperature becomes high, the resin film in the fluorescent film formed on the inner surface of the panel due to the vapor and the metal bag applied thereon will be heated. The temperature is preferably below 35°C as this may cause deterioration of the temperature.
第５図は本発明の方法の他の実施例を示す。同
図ａに示すように約50℃に加熱したパネル１を約
70゜に傾斜させて回転させる。この状態でノズル
２０よりパネルシール面１ａに１重量％の水酸化
ナトリウムと１重量％のリン酸ナトリウムを含む
アルカリ溶液２１をかける。その後約２分間放置
し、次に同図ｂに示すように弁を切換えてノズル
２０より水２２を放出して水洗する。更に水洗し
ながら、パネルシール面１ａをローラ２３で拭
く。このローラ２３はゴム、スポンジ、布などの
ついたものがパネルシール面１ａの汚れを除去す
るのに効果的である。このような方法でも前記実
施例と同等の効果を有する。 FIG. 5 shows another embodiment of the method of the invention. As shown in Figure a, panel 1 heated to approximately 50°C is heated to approximately 50°C.
Tilt and rotate at 70°. In this state, an alkaline solution 21 containing 1% by weight of sodium hydroxide and 1% by weight of sodium phosphate is applied to the panel sealing surface 1a from the nozzle 20. After that, it is left to stand for about 2 minutes, and then the valve is switched to discharge water 22 from the nozzle 20 as shown in FIG. 2B for washing. Furthermore, while washing with water, the panel seal surface 1a is wiped with a roller 23. The roller 23 coated with rubber, sponge, cloth, etc. is effective for removing dirt from the panel sealing surface 1a. Such a method also has the same effect as the above embodiment.
なお、上記各実施例においては、メタルバツク
処理後のパネルシール面の汚れを除去する場合に
ついて述べたが、この方法はけい光膜形成後のフ
イルミング膜形成後に行なつてもよいことはいう
までもない。 In each of the above embodiments, the case was described in which dirt was removed from the panel seal surface after metal back treatment, but it goes without saying that this method may also be carried out after the formation of the filming film after the formation of the fluorescent film. do not have.
また、上記各実施例においては、パネルシール
面を洗浄するアルカリ溶液としては水酸化ナトリ
ウム及びリン酸ナトリウムを含む場合について説
明したが、このアルカリ溶液は上記以外に、例え
ば水酸化カリムウ、水酸化アンモニウム、水酸化
リチウム等の強アルカリ系のものを含む場合にも
より一層洗浄効果が増す。一方、水酸化カルシウ
ム等の弱アルカリ系のものを含む場合でも、アル
カリ溶液の温度を少し高くすることで、溶液の樹
脂皮膜への浸透性が良くなり上記同様の洗浄効果
が得られることは勿論である。 Furthermore, in each of the above embodiments, the alkaline solution for cleaning the panel seal surface contains sodium hydroxide and sodium phosphate. , lithium hydroxide, and other strong alkaline substances, the cleaning effect is further increased. On the other hand, even if a weak alkaline solution such as calcium hydroxide is contained, by slightly raising the temperature of the alkaline solution, the permeability of the solution into the resin film will improve and the same cleaning effect as above can be obtained. It is.
以上の説明から明らかな如く、本発明になる陰
極線管の製造方法によれば、パネルシール面の樹
脂皮膜の汚れはパネルベーキングを行ない、有機
物を灰化除去したものと同等の清浄度を容易に得
ることができるので、パネルベーキングとフリツ
トベーキングとを１つの炉で行なつてもパネルシ
ール面の汚れによる問題は解消される。このた
め、炉を１つ減らすことができ、この工程短縮に
より省エネルギー、稼動率などの効果が得られ
る。 As is clear from the above explanation, according to the method for manufacturing a cathode ray tube according to the present invention, the stains on the resin film on the panel seal surface can be removed by panel baking, and the cleanliness equivalent to that obtained by removing organic matter by ashing can be easily achieved. Therefore, even if panel baking and frit baking are performed in one furnace, problems caused by contamination of the panel sealing surface can be solved. Therefore, the number of furnaces can be reduced by one, and this shortened process provides benefits such as energy savings and operating efficiency.
第１図ａ，ｂはパネル内面にけい光体スラリー
を塗布する場合の工程を示す説明図、第２図はパ
ネル内面にフイルミング液を塗布する場合の説明
図、第３図はフリツトガラスを介してパネルとフ
アンネルとを組合わせた状態を示す説明図、第４
図ａ，ｂは本発明の方法の一実施例を示す説明
図、第５図ａ，ｂは本発明の方法の他の実施例を
示す説明図、第６図、第７図はアルカリ溶液の濃
度によるパネルシール面洗浄効果特性を示す図で
ある。
１……パネル、１ａ……パネルシール面、５…
…フアンネル、６……フリツトガラス、１０……
アルカリ溶液、１１……水、２１……アルカリ溶
液、２２……水。
Figures 1a and b are explanatory diagrams showing the process of applying phosphor slurry to the inner surface of the panel, Figure 2 is an explanatory diagram of applying the filming liquid to the inner surface of the panel, and Figure 3 is an explanatory diagram showing the process of applying the phosphor slurry to the inner surface of the panel. Explanatory diagram showing a state in which a panel and a funnel are combined, No. 4
Figures a and b are explanatory diagrams showing one embodiment of the method of the present invention, Figures 5 a and b are explanatory diagrams showing another embodiment of the method of the present invention, and Figures 6 and 7 are explanatory diagrams showing an example of the method of the present invention. FIG. 3 is a diagram showing panel seal surface cleaning effect characteristics depending on concentration. 1...Panel, 1a...Panel seal surface, 5...
...Funnel, 6...Flit glass, 10...
Alkaline solution, 11...Water, 21...Alkaline solution, 22...Water.
Claims (1)
び金属薄膜を順次形成し、その後前記パネルとフ
アンネルとをフリツトガラスを介して組合せ、こ
の状態でベーキングを行なう陰極線管の製造方法
において、前記ベーキングまたは前記金属薄膜形
成の前にパネルシール面を濃度が0.5〜10重量％
であるアルカリ溶液に浸漬、または前記アルカリ
溶液をかけ、その後パネルシール面を水洗するこ
とを特徴とする陰極線管の製造方法。 ２ アルカリ溶液に浸漬中、または水洗中に超音
波をかけることを特徴とする特許請求の範囲第１
項記載の陰極線管の製造方法。[Scope of Claims] 1. A method for manufacturing a cathode ray tube, in which a fluorescent layer, a filming film, and a metal thin film are sequentially formed on the inner surface of a panel, and then the panel and funnel are assembled via a fritted glass, and baking is performed in this state. Before the baking or the metal thin film formation, the panel sealing surface is coated with a concentration of 0.5-10% by weight.
A method for manufacturing a cathode ray tube, comprising immersing it in an alkaline solution or applying the alkaline solution, and then washing the panel sealing surface with water. 2 Claim 1 characterized in that ultrasonic waves are applied during immersion in an alkaline solution or during washing with water.
A method for manufacturing a cathode ray tube as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15946280A JPS5784547A (en) | 1980-11-14 | 1980-11-14 | Manufacture of cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15946280A JPS5784547A (en) | 1980-11-14 | 1980-11-14 | Manufacture of cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5784547A JPS5784547A (en) | 1982-05-26 |
| JPH0370333B2 true JPH0370333B2 (en) | 1991-11-07 |
Family
ID=15694286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15946280A Granted JPS5784547A (en) | 1980-11-14 | 1980-11-14 | Manufacture of cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5784547A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5925145A (en) * | 1982-08-02 | 1984-02-09 | Toshiba Corp | Manufacture of color picture tube |
| EP0833361B1 (en) * | 1996-09-27 | 2001-08-08 | Matsushita Electronics (Europe) GmbH | Method of making colour picture tubes |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4510020Y1 (en) * | 1967-08-19 | 1970-05-09 | ||
| JPS5150443U (en) * | 1974-10-16 | 1976-04-16 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4887952U (en) * | 1972-01-31 | 1973-10-24 |
-
1980
- 1980-11-14 JP JP15946280A patent/JPS5784547A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4510020Y1 (en) * | 1967-08-19 | 1970-05-09 | ||
| JPS5150443U (en) * | 1974-10-16 | 1976-04-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5784547A (en) | 1982-05-26 |
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