JPS6160534B2 - - Google Patents
Info
- Publication number
- JPS6160534B2 JPS6160534B2 JP10477677A JP10477677A JPS6160534B2 JP S6160534 B2 JPS6160534 B2 JP S6160534B2 JP 10477677 A JP10477677 A JP 10477677A JP 10477677 A JP10477677 A JP 10477677A JP S6160534 B2 JPS6160534 B2 JP S6160534B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- forming
- filter
- filter material
- panel
- 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
- 239000000463 material Substances 0.000 claims description 43
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 25
- 239000000126 substance Substances 0.000 claims description 8
- 238000010894 electron beam technology Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 239000003086 colorant Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 238000007613 slurry method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 description 9
- 239000011521 glass Substances 0.000 description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-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
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 238000010296 bead milling Methods 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- -1 cadmium sulfide selenide Chemical class 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- CRHLEZORXKQUEI-UHFFFAOYSA-N dialuminum;cobalt(2+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Co+2].[Co+2] CRHLEZORXKQUEI-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
【発明の詳細な説明】
本発明は螢光体の発光色を選択的に透過し且つ
スクリーン外部より来る光を選択的に吸収するカ
ラー受像管螢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 for forming a phosphor surface of a color picture tube that selectively transmits the emitted color of a phosphor and selectively absorbs light coming from outside the screen.
従来より明るい外光のもとにおけるコントラス
トを改善するために電子ビームの射突により赤
色・緑色・青色に発光する螢光体のそれぞれに対
応してフイルター手段を有するカラー受像管が提
案されている。前記フイルター手段の働きはそれ
ぞれに対応する螢光体層の発光色を変化させず選
択的に透過し且つスクリーン外部より来る光の内
前記螢光体の発光色以外の光を選択的に吸収する
ものであるため、外部光のスクリーン面での反射
光量が大巾に減少しコントラストが向上する。 In order to improve the contrast under brighter external light than ever before, a color picture tube has been proposed that has filter means for each of the phosphors that emit red, green, and blue colors when struck by an electron beam. . The function of the filter means is to selectively transmit the light emitted by the corresponding phosphor layer without changing its color, and selectively absorb light other than the light emitted by the phosphor among the light coming from outside the screen. Therefore, the amount of external light reflected on the screen surface is greatly reduced, improving contrast.
これらのフイルター手段としては例えば3つの
方法が有り、第1の方法は螢光体スクリーン面と
ガラスパネル内面との間に赤・緑・青各色に発光
する螢光体層のそれぞれに対応して赤・緑・青の
フイルター物質層を形成させるものであり、
PVA+ADC+フイルター物質またはフリツトガ
ラス+フイルター物質などにより赤・緑・青のフ
イルター層を形成するものである。第2の方法は
螢光体粒子表面にそれぞれの発光色に対応したフ
イルター物質の微粒子粉を被覆せしめ、これらの
螢光体を用いて赤・緑・青のフイルター層を形成
するものである。第3の方法はガラスパネル内面
上の赤・緑・青各色に発光する螢光体層中に各々
対応するフイルター物質を混在せしめ赤・緑・青
のフイルター層を形成するものである。 There are, for example, three methods for these filter means.The first method is to filter the phosphor layers between the phosphor screen surface and the inner surface of the glass panel, corresponding to the phosphor layers that emit red, green, and blue colors. It forms red, green, and blue filter material layers,
Red, green, and blue filter layers are formed using PVA + ADC + filter material or fritted glass + filter material. The second method is to coat the surface of phosphor particles with fine particle powder of a filter material corresponding to each emission color, and use these phosphors to form red, green, and blue filter layers. The third method is to form red, green, and blue filter layers by mixing corresponding filter materials in the phosphor layers that emit light in red, green, and blue on the inner surface of the glass panel.
しかしこれらの方法にてフイルター層を形成す
るにあたり、フイルター物質の介在による明るさ
の低下とコントラスト向上との総合特性が大きな
問題となる。コントラストは使用するフイルター
物質の能力によるのは勿論であるが、使用するフ
イルター物質の量を増加させることにより向上す
るのは明らかである。一方それにともなつてフイ
ルター物質による螢光体からの放射光吸収量が多
くなり、且つ螢光体を発光させるべき電子ビーム
のエネルギーがフイルター物質を通過する事によ
り減衰される割合が増すため明るさが大巾に低下
する。しかしフイルター物質による電子ビームの
エネルギー減衰割合は形成すべきフイルター層の
構造に大きく左右される。 However, when forming a filter layer using these methods, a major problem is the overall characteristics of reduced brightness and improved contrast due to the presence of the filter material. Contrast is of course dependent on the capabilities of the filter material used, but it is clear that contrast can be improved by increasing the amount of filter material used. On the other hand, as a result, the amount of light emitted from the phosphor absorbed by the filter material increases, and the rate at which the energy of the electron beam that should cause the phosphor to emit light is attenuated by passing through the filter material increases, resulting in an increase in brightness. decreases dramatically. However, the rate at which the energy of the electron beam is attenuated by the filter material greatly depends on the structure of the filter layer to be formed.
第1の方法は螢光体層中にフイルター物質が介
在せぬため、フイルター物質により電子ビームの
エネルギーが減衰されることなく100%螢光体粒
子を発光させるのに使用される。一方フイルター
層はガラスパネル内面と螢光体層との間にあるた
めガラスパネルを透過した外光は螢光体層まで浸
透することなく優占的に吸収されるので輝度低下
割合に比較しコントラスト向上の効果は大きい。
しかし螢光体層を形成する前にあらかじめ対応す
る発光色の螢光体焼付け予定位置にフイルター層
を形成せねばならず工程が増える欠点がある。ま
たフイルター層を形成する時、フイルター物質が
他の2色のフイルター層形成予定位置または螢光
体層上に残り易く、前者は発光色の色ずれと輝度
低下、後者は輝度低下を引き起す欠点を有す。 The first method is used to cause 100% of the phosphor particles to emit light without the energy of the electron beam being attenuated by the filter material, since no filter material is present in the phosphor layer. On the other hand, since the filter layer is located between the inner surface of the glass panel and the phosphor layer, the external light that passes through the glass panel is absorbed predominantly without penetrating to the phosphor layer, so the contrast is lower than the brightness reduction rate. The effect of improvement is significant.
However, before forming the phosphor layer, a filter layer must be formed in advance at the location where the phosphor of the corresponding luminescent color is to be printed, which has the drawback of increasing the number of steps. In addition, when forming a filter layer, the filter material tends to remain on the phosphor layer or the position where the filter layers of the other two colors are to be formed, and the former causes a color shift and a decrease in brightness, and the latter causes a decrease in brightness. has.
第2の方法はフイルター物質を被覆した螢光体
を使用することにより、フイルター物質がフイル
ター層中に均一に分布することになり、前述した
如くフイルター物質により電子ビームがエネルギ
ーを減衰させられる割合が多くなる。更に第1の
方法と同様のコントラスト向上を計るためには第
1の方法に比較し多量のフイルター物質が存在せ
ねばならず、明るさがコントラスト向上に比べ大
巾に低下する欠点を有す。 The second method uses a phosphor coated with a filter material, so that the filter material is uniformly distributed in the filter layer, and as mentioned above, the rate at which the energy of the electron beam is attenuated by the filter material is reduced. There will be more. Furthermore, in order to achieve the same improvement in contrast as in the first method, a larger amount of filter material must be present than in the first method, and this method has the disadvantage that brightness is greatly reduced compared to the improvement in contrast.
第3の方法は螢光体スラリー中に目的とする量
のフイルター物質を混ぜ従来のスラリー法にてフ
イルター層を容易に形成することができる。しか
しスラリー回収が有るため螢光体層中に混在する
フイルター物質の割合を一定に保つのが難しい事
と、第1の方法と同様にフイルター物質が非常に
微小なため目的とする位置以外の所に残存し色ず
れ輝度低下を引き起すという欠点を有す。また第
1の方法と同様のコントラストを得るためには第
2の方法と同様多量のフイルター物質が存在せね
ばならず、明るさがコントラスト向上に比較し大
巾に低下する欠点がある。 In the third method, a desired amount of filter material is mixed into a phosphor slurry and a filter layer can be easily formed using a conventional slurry method. However, since slurry recovery is involved, it is difficult to maintain a constant proportion of the filter material mixed in the phosphor layer, and as in the first method, the filter material is extremely small, so it may not be placed in a location other than the intended location. It has the disadvantage that it remains behind, causing color shift and a reduction in brightness. Furthermore, in order to obtain the same contrast as in the first method, a large amount of filter material must be present as in the second method, and there is a drawback that the brightness is greatly reduced compared to the improvement in contrast.
本発明のカラー受像管螢光面の形成方法は、前
述した諸欠点を改良すると共にその製造方法を大
巾に簡易化し且つ明るさの減衰を最小限におさえ
コントラスト向上の効果を最大限に達成すること
にある。 The method for forming a color picture tube fluorescent surface of the present invention improves the above-mentioned drawbacks, greatly simplifies the manufacturing method, minimizes brightness attenuation, and maximizes the effect of improving contrast. It's about doing.
すなわち本発明はフイルター物質を混在させた
螢光体スラリーを使用して従来法によりフイルタ
ー層を形成し、このフイルター層の構造をパネル
面側に高濃度、電子銃側に低濃度にしたことに特
微が有る。 That is, the present invention forms a filter layer using a conventional method using a phosphor slurry mixed with a filter substance, and the structure of this filter layer is such that the concentration is high on the panel side and low concentration on the electron gun side. It has characteristics.
以下に本発明の詳細を述べる。 The details of the present invention will be described below.
使用するフイルター物質は赤螢光体には硫化セ
レン化カドミニウム・ベンガラ、緑螢光体にはコ
バルトグリーン、青螢光体にはアルミン酸コバル
ト・群青などが適しているが、適当なものが有れ
ばこれらにかわるものでも良い。 Suitable filter materials to be used include cadmium sulfide selenide and red iron sulfide for the red phosphor, cobalt green for the green phosphor, and cobalt aluminate and ultramarine for the blue phosphor. If so, you can use something instead of these.
蒸留水に30〜40重量%になるようフイルター物
質を入れ界面活性剤を添加した後ガラスビーズミ
ーリングを施し、フイルター物質をほぐすと同時
に水溶液中に分散させてこの液をフイルター分散
液とした。ここで分散液中のフイルター物質粒度
分布はミーリング時間・水溶液中のフイルター物
質濃度により制御することができる。このフイル
ター物質分散液を目的とする量だけミーリングの
終了した螢光体分散液に添加し良く撹拌後ポリビ
ニルアルコール(PVA)を添加する。螢光体・
フイルター物質・ポリビニルアルコールが良く混
りあつた時点で重クロム酸アンモニウム・種々の
界面活性剤を添加しフイルター物質混在螢光体ス
ラリーとした。 A filter substance was added to distilled water to a concentration of 30 to 40% by weight, and a surfactant was added thereto, followed by glass bead milling to loosen the filter substance and simultaneously disperse it in an aqueous solution to obtain a filter dispersion. Here, the particle size distribution of the filter material in the dispersion can be controlled by the milling time and the concentration of the filter material in the aqueous solution. A desired amount of this filter substance dispersion is added to the milled phosphor dispersion, and after stirring well, polyvinyl alcohol (PVA) is added. Fluorescent material/
When the filter material and polyvinyl alcohol were well mixed, ammonium dichromate and various surfactants were added to form a filter material-mixed phosphor slurry.
まず緑色フイルター物質の混在した緑螢光体ス
ラリーをガラスパネル内面に回転塗布法にて薄く
均一塗布し充分乾燥後水銀ランプ等の紫外線を放
射する光源を用いてシヤドウマスクを介して螢光
体焼き付け位置の潜像をパネル内面に焼きつけ
る。次いで温水現象にて非露光部を溶解させ所望
の緑色フイルター層を得る。得られたフイルター
層を充分乾燥させた後希釈アンモニア水を吹きつ
け、フイルター層の電子銃側にあるポリビニルア
ルコールを溶解し、そこに含まれているフイルタ
ー物質と目的とする場所以外にあるフイルター物
質を除去する。ついで水洗を行ない充分乾燥後青
色・赤色フイルター層の順で上記と同様の方法に
て形成する。ここで使用するアンモニア水の濃度
は0.02〜0.2%程度が適当で処理時間にて最適な
ものを選ぶ必要がある。また感光したポリビニル
アルコールを分解させるにはアンモニア水にかぎ
らず水酸化ナトリウム・水酸化カリウムなどの同
様の効果が得られるものを使用しても良いことは
勿論である。更にフイルター層形成順序はここで
緑・青・赤の順で記しているが異なつた順序でも
良い。前記希釈アンモニア水にてポリビニルアル
コールを溶解する手段としてはスプレー法や浸漬
法その他適当な方法が考えられる。 First, a green phosphor slurry mixed with a green filter material is applied thinly and evenly to the inner surface of the glass panel using a spin coating method. After sufficiently drying, a light source that emits ultraviolet rays such as a mercury lamp is used to bake the phosphor at the position through a shadow mask. Burns a latent image onto the inside of the panel. Next, the non-exposed areas are dissolved using hot water to obtain a desired green filter layer. After sufficiently drying the obtained filter layer, diluted ammonia water is sprayed to dissolve the polyvinyl alcohol on the electron gun side of the filter layer, and remove the filter material contained therein and the filter material located outside the intended location. remove. After washing with water and thoroughly drying, blue and red filter layers are formed in this order in the same manner as above. The appropriate concentration of ammonia water used here is about 0.02 to 0.2%, and it is necessary to select the optimum concentration based on the processing time. Furthermore, in order to decompose the exposed polyvinyl alcohol, it is needless to say that not only ammonia water but also sodium hydroxide, potassium hydroxide, and other substances capable of obtaining similar effects may be used. Further, although the order of forming the filter layers is described here as green, blue, and red, a different order may be used. Possible methods for dissolving polyvinyl alcohol in the diluted ammonia water include spraying, dipping, and other appropriate methods.
以上の如く従来のスラリー法にてフイルター層
を形成した後アンモニア水にてフイルター層が欠
落しない程度に感光したポリビニルアルコールを
分解することにより、ポリビニルアルコール中に
含まれているフイルター物質が除去される。つま
り電子銃側はフイルター物質が一定量取り除かれ
て低濃度の、パネル内面側は目的とする量のフイ
ルター物質が混在した高濃度のフイルター物質分
布状態を有すフイルター層が形成された。この結
果フイルター物質による電子ビームのエネルギー
減衰が少なくなり輝度低下が緩和される。さらに
目的とする場所以外に存在するフイルター物質も
除去されるため色ずれのない螢光面が得られる。
フイルター層中に混在するフイルター物質量のコ
ントロールはフイルター物質添加量の少ないスラ
リーを一定量供給しながら塗布することにより可
能である。 As described above, after forming a filter layer using the conventional slurry method, the exposed polyvinyl alcohol is decomposed with aqueous ammonia to the extent that the filter layer does not come off, thereby removing the filter substance contained in the polyvinyl alcohol. . In other words, a filter layer with a low concentration on the electron gun side where a certain amount of the filter material was removed and a high concentration filter material distribution state in which a desired amount of filter material was mixed was formed on the inner surface of the panel. As a result, the energy attenuation of the electron beam due to the filter material is reduced, and the reduction in brightness is alleviated. Furthermore, since the filter material present in areas other than the intended areas is also removed, a fluorescent surface without color shift can be obtained.
The amount of filter material mixed in the filter layer can be controlled by applying a slurry containing a small amount of filter material while supplying a constant amount.
この様に非常に簡易な方法でパネル内面と螢光
体層との間にフイルター層を設けた構造に類似し
た構造を有すフイルター層が得られ、フイルター
物質による色ズレがなく輝度低下に比較しコント
ラストが大巾に向上した螢光面が得られ優れた方
法である。 In this way, a filter layer with a structure similar to that in which a filter layer is provided between the inner surface of the panel and the phosphor layer can be obtained using a very simple method, and there is no color shift due to the filter material and there is no reduction in brightness. This is an excellent method as it provides a fluorescent surface with greatly improved contrast.
この螢光面形成法は黒色物質層の有無にかかわ
らずカラー受像管螢光面形成にそのまま適用でき
ることは勿論である。 It goes without saying that this method of forming a fluorescent surface can be directly applied to forming a fluorescent surface of a color picture tube regardless of the presence or absence of a black material layer.
また、前記実施例に於ては赤・緑・青各色に発
光する螢光体のそれぞれにフイルター物質を混在
させたが、これは3色に限定されるものではな
く、例えば青のみ、赤のみ、青・赤で緑を除いた
場合、その他少なくとも一つの螢光体にその発光
色に対応するフイルター物質を混在させる場合に
そのまゝ適用出来ることは論じるまでもない。 Further, in the above embodiment, a filter material was mixed in each of the phosphors that emit red, green, and blue, but this is not limited to three colors; for example, only blue, only red, etc. Needless to say, the present invention can be applied to cases where green is excluded from blue and red, or when at least one other phosphor is mixed with a filter substance corresponding to its emission color.
Claims (1)
光する螢光体層の少なくとも1つにフイルター物
質を含むカラー受像管螢光面の形成方法に於て、
前記螢光体層を形成する感光剤を含む螢光体スラ
リー中にその螢光体の発光色に対応するフイルタ
ー物質を混在せしめスラリー法にてパネル内面に
被膜を形成する工程と、シヤドウマスクを介して
前記被膜を露光し、未露光部を溶解する工程と、
電子銃側で低濃度、パネル内面側で高濃度のフイ
ルター物質分布の状態を有する螢光体層を形成す
る工程とからなることを特徴とするカラー受像管
螢光面の形成方法。 2 前記電子銃側で低濃度、パネル内面側で高濃
度のフイルター物質分布の状態を有する螢光体層
を形成する工程が、前記螢光体層の電子銃側表面
を感光膜分解剤を用いて溶解する工程からなるこ
とを特徴とする特許請求の範囲第1項記載のカラ
ー受像管螢光面の形成方法。[Scope of Claims] 1. A method for forming a color picture tube phosphor surface in which at least one of the phosphor layers that emits red, green, and blue colors upon impingement of an electron beam includes a filter material,
A step of forming a film on the inner surface of the panel by a slurry method by mixing a filter material corresponding to the emission color of the phosphor in a phosphor slurry containing a photosensitive agent forming the phosphor layer, and a step of forming a film on the inner surface of the panel through a shadow mask. exposing the film to light and dissolving the unexposed part;
A method for forming a color picture tube phosphor surface, comprising the step of forming a phosphor layer having a filter material distribution state of low concentration on the electron gun side and high concentration on the inner surface side of the panel. 2. The step of forming a phosphor layer having a filter substance distribution state in which the concentration is low on the electron gun side and high concentration on the inner surface side of the panel is that the surface of the phosphor layer on the electron gun side is coated with a photosensitive film decomposing agent. 2. A method for forming a color picture tube fluorescent surface according to claim 1, further comprising the step of dissolving the fluorescent surface of a color picture tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10477677A JPS5438759A (en) | 1977-09-02 | 1977-09-02 | Forming method for fluorescent screen of color picture tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10477677A JPS5438759A (en) | 1977-09-02 | 1977-09-02 | Forming method for fluorescent screen of color picture tube |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5438759A JPS5438759A (en) | 1979-03-23 |
JPS6160534B2 true JPS6160534B2 (en) | 1986-12-22 |
Family
ID=14389872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10477677A Granted JPS5438759A (en) | 1977-09-02 | 1977-09-02 | Forming method for fluorescent screen of color picture tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5438759A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS555292A (en) * | 1979-06-04 | 1980-01-16 | Tipton Mfg Corp | Grindstone feeding device in vibrating barrel grinder |
JP5787915B2 (en) | 2013-02-13 | 2015-09-30 | オリエンタルモーター株式会社 | Grease leakage prevention structure of gear reducer in electric motor with gear reducer |
-
1977
- 1977-09-02 JP JP10477677A patent/JPS5438759A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5438759A (en) | 1979-03-23 |
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