JPS5912539A - Method for forming phosphor screen for color picture tube - Google Patents
Method for forming phosphor screen for color picture tubeInfo
- Publication number
- JPS5912539A JPS5912539A JP12112182A JP12112182A JPS5912539A JP S5912539 A JPS5912539 A JP S5912539A JP 12112182 A JP12112182 A JP 12112182A JP 12112182 A JP12112182 A JP 12112182A JP S5912539 A JPS5912539 A JP S5912539A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- color
- adhesive
- substance
- picture tube
- 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
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
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/22—Applying luminescent coatings
- H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
- H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はカラー受像管けい光面の形成方法、特に露光に
よシ粘着性を発現する物質を用いてけい光体を付着する
カラー受像管けい光面の形成方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of forming a fluorescent surface of a color picture tube, and more particularly to a method of forming a fluorescent surface of a color picture tube in which a phosphor is attached using a substance that exhibits tackiness upon exposure to light. It is something.
一般にカラー受像管のけい光面は、緑1f+赤゛の3色
のけい光体の絵素が規則的に配列したものであるが、そ
の形成方法として、露光により粘着性を発現するいわゆ
る光粘着性組成物を利用するいわゆるドライプロセスが
提案されている。In general, the phosphor surface of a color picture tube consists of regularly arranged phosphor pixels of three colors: green 1f + red. So-called dry processes have been proposed that utilize chemical compositions.
この方法の一例は、まず、パネル内面に光粘着性組成物
を塗布し乾燥して光粘着性感光薄膜を形成する。この場
合、光粘着性組成物としては一般にジアゾ化合物と塩化
亜鉛との複塩を主成分とし、高分子化合物や界面活性剤
を添加した組成物が用いられる。次に前記パネルにシャ
ドウマスクのような色選別電極を装着し、露光台の上で
第1色、例えば緑色発光のけい光体絵素形成部分の露光
を行なった後、シャドウマスクを外し、緑色発光のけい
光体粉末をパネル内面に付与して露光により粘着化した
部位に核けい光体を付着させる。次いでエアープロー等
で現像を行ない、未露光部に付与された余分のけい光体
粉末を除去することにより、第1色のけい光体絵素が形
成できる。次に前述した露光以下の工程を他の青、赤の
2色についても繰り返すことにより、3色のけい光体絵
素を完成する。その後、高分子凝集剤と界面活性剤とを
含む水溶液で処理、洗浄し、次いでフィルミング、アル
ミナイズ工程を経てけい光面が完成する。An example of this method is to first apply a photoadhesive composition to the inner surface of the panel and dry it to form a photoadhesive photosensitive thin film. In this case, the photoadhesive composition is generally a composition containing a double salt of a diazo compound and zinc chloride as a main component, to which a polymer compound and a surfactant are added. Next, a color selection electrode such as a shadow mask is attached to the panel, and after exposing the first color, for example, the green luminescent phosphor pixel forming portion, on the exposure table, the shadow mask is removed and the Luminescent phosphor powder is applied to the inner surface of the panel, and the nuclear phosphor is attached to the areas that have become sticky due to exposure to light. Next, development is performed using an air blower or the like to remove excess phosphor powder applied to unexposed areas, thereby forming phosphor picture elements of the first color. Next, the above-described steps including exposure are repeated for the other two colors, blue and red, to complete three-color phosphor picture elements. Thereafter, it is treated and washed with an aqueous solution containing a polymer flocculant and a surfactant, and then undergoes filming and aluminization steps to complete the fluorescent surface.
しかしながら、このような方法によるカラー受像管けい
光面を形成する場合、形成されだけい光面において、後
で付与する2色目(青色発光けい光体)あるいは3色目
(赤色発光けい光体)のけい光体粉末が先に形成した1
色目(緑色発光けい光体)または2色目(青色発光けい
光体)のけい光体絵素の部分に若干付着するいわゆる混
色の現象が発生し易いという問題点があった。このよう
な混色の発生は、カラー受像管の発光の色純度を低下さ
せ、画質を著しく低下させるという、カラー受像管にと
って致命的な欠点となっていた。However, when forming a color picture tube fluorescent surface using this method, the second color (blue-emitting phosphor) or third color (red-emitting phosphor) to be added later is applied to the formed fluorescent surface. The phosphor powder formed first
There has been a problem in that a so-called color mixing phenomenon in which slight adhesion occurs to the phosphor picture elements of the first color (green emitting phosphor) or the second color (blue emitting phosphor) tends to occur. The occurrence of such color mixture reduces the color purity of the light emitted from the color picture tube and significantly reduces the image quality, which is a fatal drawback for the color picture tube.
したがって本発明は、前述した従来の欠点を解消するた
めになされたものであり、その目的とするところは、他
色の混色の発生を防止し、色純度が良く、かつ明るいけ
い光面を得ることを可能にしたカラー受像管けい光面の
形成方法を提供するとのような目的を達成するために本
発明は、けい光体粉末の少なくとも一種に光粘着性組成
物と反応してその粘着力を化学的に抑制する物質を含寸
せたものである。Therefore, the present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and its purpose is to prevent the occurrence of color mixture of other colors, and to obtain a bright fluorescent surface with good color purity. In order to achieve the above objects, the present invention provides a method for forming a fluorescent surface of a color picture tube by reacting at least one kind of phosphor powder with a photoadhesive composition to increase its adhesive strength. It contains a substance that chemically suppresses the
一般に、このような露光により粘着性を発現する光粘着
性組成物は、ジアゾ化合物とハロゲン化金属塩(例えば
塩化亜鉛、塩化カドミウム、塩化スズ等)もしくはフッ
化非金属塩(例えばホヮフツ化水素酸)との複塩を主成
分とし、これにポリマー、界面活性剤などを少量加えた
水溶液からなり、前記ジアゾ化合物が露光によって分解
すると、潮解性の物質を生成して遊離し、空気中の水分
を吸収することによって粘着性を発現するものと考えら
れている。したがって、このような粘着性が発現する部
位にけい光体粉末を付与すると、粘着液によってけい光
体の付着が生じる。In general, such a photoadhesive composition that develops tackiness upon exposure to light is composed of a diazo compound and a halogenated metal salt (e.g., zinc chloride, cadmium chloride, tin chloride, etc.) or a fluorinated nonmetallic salt (e.g., hydrofluoric acid). ), and a small amount of polymer, surfactant, etc. are added to this aqueous solution. When the diazo compound is decomposed by exposure to light, a deliquescent substance is generated and liberated, which absorbs moisture from the air. It is thought that adhesiveness develops by absorbing . Therefore, when a phosphor powder is applied to a site where such tackiness occurs, the phosphor adheres to the adhesive liquid.
したがって、前述したけい光体の混色の問題が生じる主
な原因は、所望のけい光体を付着させた後、しばらく時
間が経過すると、粘着液かけい光体の付着層の表面に浸
み上ってきて再び粘着力を発揮するようになるためであ
る。つまり、所望のけい光体を付着させた後も粘着液の
粘着性が失なわれずに保たれるため、混色を発生させて
いた。Therefore, the main cause of the above-mentioned problem of color mixing of phosphors is that after a while after the desired phosphor is attached, the adhesive liquid soaks into the surface of the phosphor's adhesion layer and builds up. This is because the adhesive strength will be exerted once again. In other words, even after the desired phosphor has been attached, the adhesiveness of the adhesive liquid is maintained without loss, resulting in color mixing.
したがって、混色を防ぐには所望のけい光体を付着させ
た後は粘着性が抑制され、次の他色のけい光体を付与す
る際にはその部分が粘着しないよう!にすれば良い。Therefore, to prevent color mixing, after attaching the desired phosphor, the stickiness should be suppressed, and when applying the phosphor of another color next time, make sure that the area does not stick! You should do it.
この観点から本発明では、ドライプロセスにおいて、光
粘着性組成物と反応してその粘着力を抑制する性質をも
つ物質をけい光体に添加して付与させるものである。From this point of view, in the present invention, in the dry process, a substance having a property of reacting with the photo-adhesive composition and suppressing its adhesive force is added to the phosphor.
このような粘着力を抑制する物質としては、無水ケイ酸
、シリカゲル、リン酸カリウムなどのような吸湿性物質
、′またチオ硫酸ナトリウム、メタケイ酸ナトリウム、
硫酸ナトリウムなどのような風解性物質、また炭酸ナト
リウム、四ホウ酸ナトリクムなどのような塩基性物質な
どを使用することができる。Substances that suppress such adhesion include hygroscopic substances such as silicic anhydride, silica gel, potassium phosphate, sodium thiosulfate, sodium metasilicate, etc.
Eorophilic substances such as sodium sulfate, basic substances such as sodium carbonate, sodium tetraborate, etc. can be used.
その作用としては、吸湿性物質は光粘着液である潮解性
水溶液の水分を吸湿することによって粘着力を弱める。As for its action, the hygroscopic substance weakens the adhesive force by absorbing moisture in the deliquescent aqueous solution, which is the optical adhesive liquid.
また風解性物質は空気中に水分を放出することによって
潮解性を抑制し、粘着力を弱める。また塩基性物質は光
粘着液中の弱酸性物質である塩化亜鉛と反応し、その潮
解性を抑制する。In addition, efflorescent substances release moisture into the air, thereby suppressing deliquescent properties and weakening adhesive strength. In addition, the basic substance reacts with zinc chloride, which is a weakly acidic substance in the photoadhesive liquid, and suppresses its deliquescent property.
これらの物質の添加量としては、けい光体に対し0.0
5〜30重量%程度が適当であシ、添加量が0.05i
量係以下では実用上十分な効果が得られず、まだ添加量
が3.0重量%を超えると、粘着力が弱くなりすぎてけ
い光体の付着量(膜厚)が不十分となる。同時に非発光
性物質がけい光膜中に含有されることおよび粘着液と添
加物の反応による生成物ができることが関係し、その結
果としてけい光膜の輝度の低下が起る。したがって、添
加量は0.1〜1.0重t%の範囲とすることが好まし
い。また添加物の粒度はけい光体とほぼ同程度が望まし
い。The amount of these substances added is 0.0 to the phosphor.
Approximately 5 to 30% by weight is appropriate, and the amount added is 0.05i
If the amount is less than 3.0% by weight, a practically sufficient effect cannot be obtained, and if the amount added exceeds 3.0% by weight, the adhesive force becomes too weak and the amount of phosphor attached (film thickness) becomes insufficient. At the same time, the inclusion of non-luminescent substances in the fluorescent film and the formation of products due to the reaction between the adhesive liquid and additives are involved, resulting in a decrease in the brightness of the fluorescent film. Therefore, the amount added is preferably in the range of 0.1 to 1.0% by weight. Further, the particle size of the additive is preferably approximately the same as that of the phosphor.
添加する方法としては、前記物質を粉末状にし
−てけい光体粉末と混合しても良いし、または前記物質
の水溶液中にけい光体を分散させた後、乾燥し、けい光
体表面に前記物質を析出させても良い。The method of addition is to make the above substance into powder form.
- The phosphor may be mixed with a phosphor powder, or the phosphor may be dispersed in an aqueous solution of the substance and then dried to precipitate the substance on the surface of the phosphor.
以下本発明を実施例を用いで説明する。The present invention will be explained below using examples.
実施例
捷ず、カラー受像管のパネル内面に光粘着性を有する感
光性組成物を塗布し、その被膜を形成する。次にシャド
ウマスクの孔を介して露光し、露光部を粘着性にする。EXAMPLE A photosensitive composition having phototackiness is applied to the inner surface of the panel of a color picture tube to form a film. It is then exposed to light through the holes in the shadow mask, making the exposed areas sticky.
これに第1色目のけい光体に前述した粘着性を抑制する
物質を混合したものを付与した後、現像し、パターンを
形成する。同様にして第2色目、第3色目のけい光体を
付与する。さらにブラックマトリックス膜を形成する□
場合には第3色目のけい光体パターン形成後、けい光体
パターンの間隙を露光してから光吸収性物質を付与する
。この場合、粘着力を抑制する物質は必ずしも3色のけ
い光体のすべてに混入させる必要はなく、少なくとも1
色に添加すれば良い。このような方法によって後から付
与されるけい光体もしくは光吸収性物質が、以前に形成
されているけい光体パターンに混入することを抑制する
ことが可能となる。このようにして形成されたけい光体
パターンは高分子物質と界面活性剤との水溶液で定着処
理した後、水洗処理することにより、膜剥れの全くない
良好なけい光面が形成をれることになる。A mixture of the phosphor of the first color and the above-mentioned tackiness suppressing substance is applied to this, and then developed to form a pattern. In the same manner, second and third color phosphors are applied. Furthermore, a black matrix film is formed□
In some cases, after forming the third color phosphor pattern, the gaps in the phosphor pattern are exposed to light before the light-absorbing material is applied. In this case, the substance that suppresses the adhesion does not necessarily need to be mixed into all three color phosphors; at least one
Just add it to the color. Such a method makes it possible to prevent the phosphor or light-absorbing material applied later from mixing with the previously formed phosphor pattern. The phosphor pattern formed in this way is fixed with an aqueous solution of a polymeric substance and a surfactant, and then washed with water to form a good phosphor surface with no film peeling. become.
以下、具体例を用いて詳細に説明する。Hereinafter, a detailed explanation will be given using a specific example.
具体例1゜
まず、受像管パネルの内面に光粘着剤を塗布した後、乾
燥して約0.6μmの厚さを有する光粘着性感光薄膜を
形成した。次にこのパネルにシャドウマスクを装着して
露光し、青色発光相当の領域を分解して粘着液を生成さ
せた後、青色発光けい光体粉末に四ホウ酸ナトリウム粉
末を1.0重量係混合させたものを付与し、現像して青
色発光けい光体ストライプを形成した。引き続き順次繰
、赤色発光けい光体についても同様の操作を繰υ返し行
なって3色のけい光体ストライプを形成した。一方、′
青色発光けい光体として四ホウ酸ナトリウムを全く含有
しない従来のものを使用して全く同様の手段でけい光面
を形成し、顕微鏡観察によって両者の混色レベルを比較
した。その結果、従来のものに比べて四ホウ酸ナトリウ
ムを加えた場合の方が、青色発光けい光体中への緑、赤
発光けい光体の混入量が約50チ以下であることが確認
できた。Specific Example 1 First, a photosensitive adhesive was applied to the inner surface of a picture tube panel, and then dried to form a photosensitive thin film having a thickness of about 0.6 μm. Next, a shadow mask is attached to this panel and it is exposed to light to decompose the area corresponding to blue light emission and produce a sticky liquid. After that, 1.0 weight ratio of sodium tetraborate powder is mixed with the blue light emitting phosphor powder. was applied and developed to form blue emitting phosphor stripes. Subsequently, the same operation was repeated for the red-emitting phosphor to form three-color phosphor stripes. on the other hand,'
A conventional blue-emitting phosphor containing no sodium tetraborate was used to form a phosphor surface in exactly the same manner, and the level of color mixing between the two was compared by microscopic observation. As a result, it was confirmed that when sodium tetraborate was added, the amount of green and red emitting phosphors mixed into the blue emitting phosphor was about 50 or less compared to the conventional method. Ta.
具体例2゜
青色発光けい光体として、チオ硫酸ナトリウム粉末を0
.1重量多湿合したものを用い、緑色発光けい光体とし
て無水ケイ酸を05重量%混合したものを用いた以外は
前記具体例1と同様の方法でけい光面を形成した。その
結果、従来の場合に比べて青色発光けい光体中への緑色
発光けい光体の混入量は約20チ減少し、緑色発光けい
光体中への赤色発光けい光体の混入量も約30係減少し
たことが確認できた。Specific example 2゜As a blue-emitting phosphor, sodium thiosulfate powder was used as a blue-emitting phosphor.
.. A phosphorescent surface was formed in the same manner as in Example 1, except that 0.5% by weight of silicic anhydride was used as the green-emitting phosphor. As a result, compared to the conventional case, the amount of green-emitting phosphor mixed into the blue-emitting phosphor has been reduced by about 20 cm, and the amount of red-emitting phosphor mixed into the green-emitting phosphor has also been reduced by about 20%. It was confirmed that the number of staff decreased by 30.
このようにしてけい光体パターンを形成した後、ポリア
クリルアミドを0.03重量φと界面活性剤としてエマ
ールNo (花王アトラス社の商品名)を0.015重
量%との水溶液に浸漬処理後、水洗し、しかる後フィル
ミングおよびアルミナイズを行なってけい光面を完成さ
せた。After forming the phosphor pattern in this way, it was immersed in an aqueous solution containing 0.03 weight φ of polyacrylamide and 0.015 weight % of Emar No (trade name of Kao Atlas Co., Ltd.) as a surfactant. After washing with water, filming and aluminizing were performed to complete the fluorescent surface.
以上説明したように本発明によれば、けい光体粉末の少
なくとも1種類に、光粘着性組成物と反応してその粘着
力を抑制する物質を含有させたことによって、混色の少
ないけい光面が形成できるので、色純度が良好でかつ明
るさやコントラストの良好な高品質のカラー受像管けい
光面を得ることができるという極めて優れた効果を有す
る。As explained above, according to the present invention, at least one type of phosphor powder contains a substance that reacts with the photoadhesive composition and suppresses its adhesive strength, so that a phosphor surface with less color mixture is produced. This has an extremely excellent effect in that a high quality color picture tube fluorescent surface with good color purity, brightness and contrast can be obtained.
Claims (1)
着性を発現する感光膜を形成する工程と、前記感光膜の
けい光体絵素形成部位を露光する工程と、前記露光によ
り粘着性を発現した部位にけい光体粉末を付着する工程
と、余分のけい光体粉末を除去する工程とを各色につい
て繰シ返し行なった後、定着処理、水洗処理を行なうカ
ラー受像管けい光面の形成方法において、前記けい光体
粉末の少なくとも1種類に、前記光粘着性組成物と反応
してその粘着力を抑制する物質を含有させたことを特徴
とするカラー受像管けい光面の形成方法。a step of applying a photoadhesive composition to the inner surface of the panel to form a photoresist film that develops tackiness upon exposure; a step of exposing a phosphor pixel-forming portion of the photoresist film; After repeating the process of attaching phosphor powder to the area where the phosphor powder has appeared and the process of removing excess phosphor powder for each color, the phosphor surface of the color picture tube is subjected to fixing and washing. A method for forming a color picture tube fluorescent surface, characterized in that at least one of the phosphor powders contains a substance that reacts with the photoadhesive composition to suppress its adhesive force. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12112182A JPS5912539A (en) | 1982-07-14 | 1982-07-14 | Method for forming phosphor screen for color picture tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12112182A JPS5912539A (en) | 1982-07-14 | 1982-07-14 | Method for forming phosphor screen for color picture tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5912539A true JPS5912539A (en) | 1984-01-23 |
Family
ID=14803397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12112182A Pending JPS5912539A (en) | 1982-07-14 | 1982-07-14 | Method for forming phosphor screen for color picture tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5912539A (en) |
-
1982
- 1982-07-14 JP JP12112182A patent/JPS5912539A/en active Pending
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