JPH0822768A - Cleaning method for color cathode-ray tube panel - Google Patents

Cleaning method for color cathode-ray tube panel

Info

Publication number
JPH0822768A
JPH0822768A JP15570194A JP15570194A JPH0822768A JP H0822768 A JPH0822768 A JP H0822768A JP 15570194 A JP15570194 A JP 15570194A JP 15570194 A JP15570194 A JP 15570194A JP H0822768 A JPH0822768 A JP H0822768A
Authority
JP
Japan
Prior art keywords
panel
cleaning
acid
ray tube
alkali
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
Application number
JP15570194A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Odaka
芳之 小高
Shoko Nishizawa
昌絋 西澤
Toshikuni Miyama
年邦 深山
Hiroaki Yoshitake
博昭 吉武
Atsushi Miyagawa
淳 宮川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Hitachi Chiba Electronics Ltd
Original Assignee
Hitachi Ltd
Hitachi Chiba Electronics Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, Hitachi Chiba Electronics Ltd filed Critical Hitachi Ltd
Priority to JP15570194A priority Critical patent/JPH0822768A/en
Publication of JPH0822768A publication Critical patent/JPH0822768A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2209/00Apparatus and processes for manufacture of discharge tubes
    • H01J2209/01Generalised techniques
    • H01J2209/017Cleaning

Abstract

PURPOSE:To restrain the occurrence of nonuniformity of cleaning of a color cathode-ray tube panel by performing acid or alkali cleaning after a black matrix fluorescent screen is first removed by a high pressure water spray or water flow. CONSTITUTION:A defective bulb of a black matrix-shaped color cathode-ray tube is inputted to a frit reprocess, and frit glass is treated by nitric acid, and a glass panel 1 is separated from a funnel. The panel 1 is downward fixed to a panel holder for a washer. Water is injected for 20 seconds under pressure of 10kg/cm<2> from plural high pressure spray nozzles 23 arranged on the panel under side, and a fluorescent screen is completely removed from a panel inside surface. Next, similarly as usual, water cleaning is performed by an acid or alkali cleaning liquid and a bar nozzle. Therefore, nonuniformity of cleaning is hardly caused, and the concentration of acid or alkali to be used is diluted, and safety is improved, and the occurrence of a defective at panel reproducing time can be reduced.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、カラー陰極線管の製造
工程において行われる螢光膜、又は螢光膜およびアルミ
ニウム膜の洗浄において、従来ときどき発見されていた
洗浄むら(洗浄面に生じた微かな凹凸)の発生を防止で
きるようにしたカラー陰極線管パネルの洗浄方法に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to cleaning of fluorescent films or fluorescent films and aluminum films in the manufacturing process of color cathode ray tubes. The present invention relates to a method of cleaning a color cathode ray tube panel capable of preventing the occurrence of (fine unevenness).

【0002】[0002]

【従来の技術】カラー陰極線管の製造工程では、部材の
高効率利用と廃棄物による環境汚染を防止するため、一
旦ファンネルと低融点ガラスで封着させたパネルを、酸
処理により取外して分離し、さらにパネル内面に形成さ
せた螢光膜を除去洗浄し、再利用することが現在一般的
に実行されている。
2. Description of the Related Art In the process of manufacturing a color cathode ray tube, in order to efficiently use members and prevent environmental pollution due to waste, a panel once sealed with a funnel and low melting glass is removed by acid treatment and separated. Further, it is currently generally practiced to remove, clean, and reuse the fluorescent film formed on the inner surface of the panel.

【0003】例えば、ブラックマトリクス形カラー陰極
線管(現在ではブラックマトリクス形の製品の方が、ブ
ラックマトリクス膜のない製品よりも遥かにコントラス
ト良好な見易い画像を表示するので、カラー陰極線管は
すべてブラックマトリクス形と見做して差し支えない)
のパネルベーキング工程以前の工程で螢光膜およびアル
ミニウム膜不良となったガラスパネルは、ブラックマト
リクス(以後BMと略称)膜形成工程に戻され、ブラッ
クマトリクス膜塗布機に投入され、まず苛性ソーダ水溶
液でアルミ膜(メタルバック膜)を溶解除去し、次に水
洗後、弗化水素酸水溶液で洗浄して螢光体膜、BM膜を
除去したのち、水洗してから再度、螢光膜を形成させて
再使用することが一般に実行されている。
For example, a black matrix type color cathode ray tube (currently, a black matrix type product displays a much better contrast and easier-to-see image than a product without a black matrix film. It can be regarded as a shape)
The glass panel that has become defective in the fluorescent film and aluminum film in the process before the panel baking process is returned to the black matrix (hereinafter abbreviated as BM) film forming process, and is put into the black matrix film coating machine, and is first treated with a caustic soda solution. The aluminum film (metal back film) is dissolved and removed, then washed with water, then washed with a hydrofluoric acid aqueous solution to remove the phosphor film and the BM film, and then washed with water to form the fluorescent film again. It is commonly practiced to reuse.

【0004】また、フリットベーキング以後の工程で螢
光膜およびアルミニウム膜不良になったバルブは、フリ
ット再生工程に送られ、パネル部とファンネル部を接着
しているフリットガラスを硝酸処理して、パネル部とフ
ァンネル部に再び分離される。パネルスカートの封止面
に残ったフリットガラスを研磨した後、弗化水素酸で螢
光膜を除去したのち水洗してBM工程に再投入すること
が一般に行われている。
In addition, the bulb which has become defective in the fluorescent film and the aluminum film in the process after the frit baking is sent to the frit reproducing process, and the frit glass which adheres the panel part and the funnel part is treated with nitric acid to produce the panel. Section and funnel section again. After the frit glass remaining on the sealing surface of the panel skirt is polished, the fluorescent film is removed with hydrofluoric acid, washed with water and re-introduced into the BM process.

【0005】このような場合、ガラスパネルに付着して
いる螢光膜は、図2(従来からのガラスパネルの洗浄機
を示す側面図)に示すように、パネル下部に配置された
棒状のノズルから、酸、アルカリ水溶液の噴流をガラス
パネル内面に噴射する方法によって除去される。棒状ノ
ズルから噴出される酸、アルカリ溶液および水の圧力は
1.5〜2.5kg/cm2程度である。なお、図2
中、1はパネル、6はチャンバー、8はノズル(棒
状)、9はマニホールド、10は噴流(洗浄液)、11
は排水管である。
In such a case, the fluorescent film adhering to the glass panel is a rod-shaped nozzle arranged at the bottom of the panel as shown in FIG. 2 (side view showing a conventional glass panel washer). Then, it is removed by a method of jetting a jet stream of an acid or alkali aqueous solution onto the inner surface of the glass panel. The pressure of the acid, alkali solution and water ejected from the rod-shaped nozzle is about 1.5 to 2.5 kg / cm 2 . Note that FIG.
Inside, 1 is a panel, 6 is a chamber, 8 is a nozzle (rod shape), 9 is a manifold, 10 is a jet (cleaning liquid), 11
Is a drainage pipe.

【0006】[0006]

【発明が解決しようとする課題】しかし、上記従来の方
法によってガラスパネルを、酸、アルカリで洗浄した場
合、図4に示すような洗浄むらが発生し易く、塗布裕度
を狭くしている。なお、図4はガラスパネル洗浄時に発
生する洗浄むらの一部を示す図で、図(a)は拡大断面
図、図(b)はパネルの上面図、図(c)は図(b)中
に示すパネル周辺部の破線円内の拡大断面図で、12’
は黒鉛付着部、13’は青螢光体付着部、14’は緑螢
光体付着部、15’は赤螢光体付着部、17は異常部、
18は正常な場合である。
However, when a glass panel is washed with an acid or an alkali by the above-mentioned conventional method, uneven cleaning as shown in FIG. 4 is likely to occur and the coating margin is narrowed. 4A and 4B are views showing a part of the cleaning unevenness generated when cleaning the glass panel. FIG. 4A is an enlarged sectional view, FIG. 4B is a top view of the panel, and FIG. 4C is in FIG. 12 'is an enlarged cross-sectional view of the periphery of the panel shown in FIG.
Is a graphite adhesion part, 13 'is a blue fluorescence adhesion part, 14' is a green fluorescence adhesion part, 15 'is a red fluorescence adhesion part, 17 is an abnormal part,
18 is a normal case.

【0007】このような洗浄むらが発生するのは、ブラ
ックマトリクス形螢光面が図3(下方の図は上方図の円
内の拡大図)に示すような構造をしており、酸やアルカ
リの洗浄液は、比較的粗な螢光体膜には多少浸透し易
く、比較的密なブラックマトリクス膜には多少浸透し難
いというように、洗浄対象によって洗浄液の洗浄力に微
妙な差があるためと考えられる。すなわち、螢光体およ
びブラックマトリクス膜の黒鉛は、酸、アルカリ洗浄液
に溶解せず、酸、アルカリはガラス表面を侵食して土台
であるガラスと共に螢光膜を除去しているため、上記洗
浄液の浸透性の相違が洗浄むら発生の原因となるものと
思われる。なお、図3中、12は黒鉛膜、13は青螢光
体、14は緑螢光体、15は赤螢光体、16はアルミ膜
である。
Such uneven cleaning occurs because the black matrix type fluorescent surface has a structure as shown in FIG. 3 (the lower figure is an enlarged view in the circle of the upper figure), and the acid or alkali is used. The cleaning solution of # 1 has a slight difference in the cleaning power of the cleaning solution, as it easily penetrates into the relatively coarse phosphor film and slightly into the relatively dense black matrix film. it is conceivable that. That is, the graphite of the fluorescent substance and the black matrix film is not dissolved in an acid or alkali cleaning liquid, and the acid or alkali corrodes the glass surface to remove the fluorescent film together with the glass that is the base. It is considered that the difference in permeability causes the uneven cleaning. In FIG. 3, 12 is a graphite film, 13 is a blue phosphor, 14 is a green phosphor, 15 is a red phosphor, and 16 is an aluminum film.

【0008】一方、最近、カラー陰極線管の製造工程で
は、生産性を向上させるため各加工工程の時間を短縮す
ることが進められている。洗浄工程では、これに対応す
るために、酸、アルカリ洗浄液の濃度を濃くして従来よ
りも短時間で従来通りの洗浄度を保つように努めている
が、洗浄液濃度を濃くすると、ますます洗浄むらが発生
し易くなり、再生パネル使用時の塗布裕度を狭くする一
因となっている。
On the other hand, recently, in the manufacturing process of the color cathode ray tube, in order to improve the productivity, it has been promoted to shorten the time of each processing process. In the cleaning process, in order to deal with this, we are trying to increase the concentration of the acid and alkali cleaning solutions to maintain the same degree of cleaning as before in a shorter time than before. The unevenness is more likely to occur, which is one of the causes for narrowing the application margin when using the reproduction panel.

【0009】本発明は、上記従来のような洗浄むらの発
生を抑制したカラー陰極線管パネルの洗浄方法を提供す
ることを課題とする。
An object of the present invention is to provide a method for cleaning a color cathode ray tube panel in which the above-mentioned conventional uneven cleaning is suppressed.

【0010】[0010]

【課題を解決するための手段】上記課題を解決するため
に本発明のおいては、カラー陰極線管のガラス製パネル
の洗浄工程において、先ず、高圧の、水スプレー及び水
流によって、パネル内面に付着したブラックマトリクス
螢光膜をほぼ完全に除去したのち、例えば周辺部など、
場所によって完全には除去されずに部分的に残留した螢
光膜を、更に酸またはアルカリにより軽く洗浄して除去
することにより、洗浄後のパネル内面に洗浄むらが発生
しないようにした。
In order to solve the above problems, according to the present invention, in the step of cleaning a glass panel of a color cathode ray tube, first, a high pressure water spray and water flow are applied to the inner surface of the panel. After almost completely removing the black matrix fluorescent film,
The fluorescent film which was not completely removed depending on the place but remained partially was further washed by lightly washing with acid or alkali to prevent uneven washing on the inner surface of the panel after washing.

【0011】[0011]

【作用】上記の手段をとれば、ガラスパネルの内側表面
が、酸、アルカリ洗浄液によってほぼ一様に侵食されて
洗浄されるため、ブラックマトリクス形螢光膜付きガラ
スパネルの再生洗浄が均一に行われるようになる。ま
た、螢光膜を酸、アルカリ洗浄液で洗浄する前に、水の
高圧スプレーで殆ど除去してしまっているので、酸、ア
ルカリ洗浄に依存する程度は僅かで、従って酸、アルカ
リ洗浄液の濃度を濃くしても洗浄裕度を狭くすることが
ない。
With the above means, the inner surface of the glass panel is almost uniformly eroded and cleaned by the acid and alkali cleaning solution, so that the black matrix type glass panel with a fluorescent film is uniformly regenerated and cleaned. You will be told. Also, before cleaning the fluorescent film with an acid / alkali cleaning solution, most of it has been removed with a high-pressure spray of water, so there is little dependence on acid / alkali cleaning, so the concentration of the acid / alkali cleaning solution is It does not narrow the cleaning margin even if it is thickened.

【0012】[0012]

【実施例】以下、図面により本発明を更に詳細に説明す
る。
The present invention will be described in more detail with reference to the drawings.

【0013】実施例1:図5(図中、1はパネル、2は
ファンネル、3は電子銃、4はネック、5はフリットガ
ラス)に示すような構造で対角寸法が780mmのガラ
スパネル1を有するブラックマトリクス形カラー陰極線
管の不良球をフリット再工程に投入し、フリットガラス
5を硝酸処理してガラスパネル1をファンネル2から分
離させたものを、本発明の実施例図である図1(図
(a)は側面図、図(b)は水噴射用マニホールドのス
プレーノズル配置を示す平面図で、1はパネル、6はチ
ャンバー、19は昇圧ポンプ、20は圧力計、21はマ
ニホールド、22はパネル押え、23はスプレーノズ
ル)に示すように、洗浄機用パネルホルダーに下向きに
固定する。パネル下側に配置した複数本の高圧スプレー
ノズルから圧力10kg/cm2で水を20秒間噴射さ
せると、螢光膜はガラスパネル内面から完全に除去され
た。次に従来と同様に、酸、アルカリ洗浄液および棒ノ
ズルによる水洗浄を行い、従来の洗浄方法で洗浄したガ
ラスパネルと比較した。従来の洗浄方法で洗浄したガラ
スパネルの内面には、図4に示すような(12’〜1
5’)ストライプ状のコントラストの薄い洗浄むらが反
射光で確認されたが、本発明により螢光膜を先ず高圧の
水スプレーで除去したガラスパネルには、ストライプ状
の洗浄むらは発生しなかった。
Example 1 In FIG. 5 (in the figure, 1 is a panel, 2 is a funnel, 3 is an electron gun, 4 is a neck, 5 is frit glass), and the glass panel 1 has a diagonal dimension of 780 mm. 1 is a diagram showing an embodiment of the present invention in which a defective sphere of a black matrix type color cathode ray tube having the above is put into a frit re-process, and the frit glass 5 is treated with nitric acid to separate the glass panel 1 from the funnel 2. (FIG. (A) is a side view, (b) is a plan view showing a spray nozzle arrangement of a water injection manifold, 1 is a panel, 6 is a chamber, 19 is a booster pump, 20 is a pressure gauge, 21 is a manifold, 22 is a panel retainer, and 23 is a spray nozzle, as shown in FIG. When the water was sprayed for 20 seconds at a pressure of 10 kg / cm 2 from a plurality of high pressure spray nozzles arranged on the lower side of the panel, the fluorescent film was completely removed from the inner surface of the glass panel. Next, similarly to the conventional method, washing with an acid, an alkaline washing solution and water with a rod nozzle was performed, and the glass panel was washed with a conventional washing method and compared. On the inner surface of the glass panel washed by the conventional washing method, as shown in FIG.
5 ') Stripe-like thin cleaning unevenness was confirmed by reflected light, but striped cleaning unevenness did not occur on the glass panel from which the fluorescent film was first removed by high-pressure water spray according to the present invention. .

【0014】実施例2:対角寸法780mmのガラスパ
ネルでアクリルエマルジョン工程の不良品をBM塗布機
に再投入し、本発明により、酸、アルカリ洗浄前に、図
2に示すようにガラスパネルを下向きに装着し、図2に
示した従来のマニホールドの代りに耐圧60kg/cm
2のマニホールド及び配管を取り付け、ガラスパネルを
5rpmで回転させながら昇圧ポンプを介して圧力30
kg/cm2で水を20秒間噴射させると、ガラスパネ
ルに付着していた螢光膜の大部分が除去された(部分的
に黒鉛層が薄く残っていた)。次に従来通りの方法で、
酸、アルカリ、及び純水洗浄を行った。このガラスパネ
ルを従来の方法で洗浄したガラスパネルと比較したが、
何れのガラスパネルにも洗浄むらは発生していなかっ
た。しかし、従来の方法で、洗浄〜螢光膜塗布を3回繰
り返すと、ガラスパネル内面にストライプ状の洗浄むら
の発生が見られたが、本発明により水の高圧スプレーで
螢光膜を除去後、酸、アルカリ洗浄したものは、洗浄〜
螢光膜塗布を8回繰り返し行っても、洗浄むらの発生は
認められなかった。
Example 2: A glass panel having a diagonal size of 780 mm was re-charged into a BM coating machine to be defective in the acrylic emulsion process, and according to the present invention, the glass panel was cleaned as shown in FIG. Mounted downward, pressure resistance 60 kg / cm instead of the conventional manifold shown in FIG.
Attaching the second manifold and the piping, pressure 30 via a booster pump while the glass panel is rotated at 5rpm
When water was sprayed at kg / cm 2 for 20 seconds, most of the fluorescent film adhering to the glass panel was removed (the graphite layer remained partially thin). Then, in the conventional way,
Washing with acid, alkali and pure water was performed. We compared this glass panel with a glass panel that was cleaned by conventional methods,
No cleaning unevenness occurred on any of the glass panels. However, when washing-coating with a fluorescent film was repeated three times by the conventional method, stripe-shaped uneven cleaning was observed on the inner surface of the glass panel. However, according to the present invention, after removing the fluorescent film with a high-pressure spray of water, Washed with acid, alkali, washed ~
Even when the fluorescent film coating was repeated 8 times, uneven cleaning was not observed.

【0015】実施例3:本発明により、先ず水の高圧ス
プレーで螢光膜を除去したのち、酸、アルカリ洗浄を行
った場合には、酸、アルカリ洗浄液の濃度を2倍にして
も洗浄むらは発生しなかった。また、酸、アルカリ洗浄
液の濃度を従来の1/5にしても、本発明により最初に
水の高圧スプレーで螢光膜を除去したものには、洗浄む
らは発生せず、かつ、洗浄残りも発生しなかった。
Example 3 According to the present invention, when the fluorescent film is first removed by high-pressure spraying of water and then acid / alkali cleaning is performed, uneven cleaning occurs even if the concentration of the acid / alkali cleaning solution is doubled. Did not occur. Further, even if the concentration of the acid / alkali cleaning solution is set to 1/5 of that of the conventional one, in the case where the fluorescent film is first removed by the high pressure spray of water according to the present invention, the cleaning unevenness does not occur, and the cleaning residue does not occur. Did not occur.

【0016】[0016]

【発明の効果】以上説明したように本発明によれば、洗
浄むらが発生し難くなり、更に、洗浄に用いる酸、アル
カリの濃度を薄くすることができるので安全性が向上
し、しかも、ガラスパネル再生時の不良発生数を低減で
きる。
As described above, according to the present invention, uneven cleaning is less likely to occur, and the concentration of acid and alkali used for cleaning can be reduced, so that the safety is improved and the glass The number of defects generated during panel reproduction can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例図で、図(a)は側面図、図
(b)は水噴射用マニホールドのスプレーノズル配置を
示す平面図である。
FIG. 1 is an embodiment of the present invention, FIG. 1A is a side view, and FIG. 1B is a plan view showing a spray nozzle arrangement of a water injection manifold.

【図2】従来からのガラスパネルの洗浄機を示す側面図
である。
FIG. 2 is a side view showing a conventional glass panel washer.

【図3】ブラックマトリクス形螢光面の構造を示す断面
図で、下方の図は上方の図の破線円内の拡大図である。
FIG. 3 is a cross-sectional view showing a structure of a black matrix type fluorescent surface, and a lower view is an enlarged view within a broken line circle in the upper view.

【図4】ガラスパネル洗浄時に発生する洗浄むらの一部
を示す図で、図(a)は拡大断面図、図(b)はパネル
の上面図、図(c)は図(b)中に示すパネル周辺部の
破線円内の拡大断面図である。
4A and 4B are views showing a part of cleaning unevenness generated when cleaning a glass panel, wherein FIG. 4A is an enlarged sectional view, FIG. 4B is a top view of the panel, and FIG. 4C is in FIG. FIG. 4 is an enlarged cross-sectional view in a circle of a broken line in the peripheral portion of the panel shown.

【図5】陰極線管の構造を示す側面図である。FIG. 5 is a side view showing the structure of a cathode ray tube.

【符号の説明】[Explanation of symbols]

1…パネル、 2…ファンネル、 3…電子銃、 4…
ネック、 5…フリットガラス、 6…チャンバー、
7…キャリアヘッド、 8…ノズル(棒状)、9…マニ
ホールド、 10…噴流(洗浄液)、 11…排水管、
12…黒鉛膜、 12’…黒鉛付着部、 13…青螢
光体、 13’…青螢光体付着部、14…緑螢光体、
14’…緑螢光体付着部、 15…赤螢光体、 15’
…赤螢光体付着部、 16…アルミ膜、 17…異常
部、 18…正常な場合、 19…昇圧ポンプ、 20
…圧力計、 21…マニホールド、 22…パネル押
え、 23…スプレーノズル。
1 ... Panel, 2 ... Funnel, 3 ... Electron gun, 4 ...
Neck, 5 ... Frit glass, 6 ... Chamber,
7 ... Carrier head, 8 ... Nozzle (rod shape), 9 ... Manifold, 10 ... Jet flow (cleaning liquid), 11 ... Drain pipe,
12 ... Graphite film, 12 '... Graphite adhering part, 13 ... Blue fluorescent material, 13' ... Blue fluorescent material adhering part, 14 ... Green fluorescent material,
14 '... Green fluorescent substance attaching part, 15 ... Red fluorescent substance, 15'
... Red fluorescent substance adhered part, 16 ... Aluminum film, 17 ... Abnormal part, 18 ... Normal case, 19 ... Boost pump, 20
... Pressure gauge, 21 ... Manifold, 22 ... Panel retainer, 23 ... Spray nozzle.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 深山 年邦 千葉県茂原市早野3300番地 株式会社日立 製作所電子デバイス事業部内 (72)発明者 吉武 博昭 千葉県茂原市早野3300番地 株式会社日立 製作所電子デバイス事業部内 (72)発明者 宮川 淳 千葉県茂原市早野3300番地 日立千葉エレ クトロニクス株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tokuni Miyama 3300 Hayano, Mobara-shi, Chiba Electronic device division, Hitachi, Ltd. (72) Hiroaki Yoshitake 3300 Hayano, Mobara, Chiba Hitachi, Ltd. Electronic device (72) Inventor Atsushi Miyagawa 3300 Hayano, Mobara-shi, Chiba Hitachi Chiba Electronics Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】カラー陰極線管のガラス製パネルの洗浄工
程において、先ず、高圧の、水スプレー及び水流によっ
て、パネル内面に付着したブラックマトリクス螢光膜の
除去作業を行なったのち、さらに、酸またはアルカリに
より螢光膜を洗浄、除去する作業を付加的に行なうよう
にしたことを特徴とするカラー陰極線管パネルの洗浄方
法。
1. In the step of cleaning a glass panel of a color cathode ray tube, first, a work of removing a black matrix fluorescent film adhering to the inner surface of the panel is carried out by a high-pressure water spray and a water flow, and then acid or A method of cleaning a color cathode ray tube panel, characterized in that an operation of cleaning and removing the fluorescent film with an alkali is additionally performed.
JP15570194A 1994-07-07 1994-07-07 Cleaning method for color cathode-ray tube panel Pending JPH0822768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15570194A JPH0822768A (en) 1994-07-07 1994-07-07 Cleaning method for color cathode-ray tube panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15570194A JPH0822768A (en) 1994-07-07 1994-07-07 Cleaning method for color cathode-ray tube panel

Publications (1)

Publication Number Publication Date
JPH0822768A true JPH0822768A (en) 1996-01-23

Family

ID=15611633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15570194A Pending JPH0822768A (en) 1994-07-07 1994-07-07 Cleaning method for color cathode-ray tube panel

Country Status (1)

Country Link
JP (1) JPH0822768A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6383696B2 (en) * 1998-06-11 2002-05-07 Micron Technology, Inc. Methods of forming a face plate assembly of a color display

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6383696B2 (en) * 1998-06-11 2002-05-07 Micron Technology, Inc. Methods of forming a face plate assembly of a color display
US6406603B2 (en) * 1998-06-11 2002-06-18 Micron Technology, Inc. Methods of forming a face plate assembly of a color display

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