JPS62170127A - Assembly of shadow mask - Google Patents
Assembly of shadow maskInfo
- Publication number
- JPS62170127A JPS62170127A JP1100986A JP1100986A JPS62170127A JP S62170127 A JPS62170127 A JP S62170127A JP 1100986 A JP1100986 A JP 1100986A JP 1100986 A JP1100986 A JP 1100986A JP S62170127 A JPS62170127 A JP S62170127A
- Authority
- JP
- Japan
- Prior art keywords
- shadow mask
- mask
- shadow
- frame
- peripheral portion
- 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
- 230000002093 peripheral effect Effects 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 7
- 238000010894 electron beam technology Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 abstract description 8
- 238000000137 annealing Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 229910001374 Invar Inorganic materials 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001327 Rimmed steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明はカラー受像管用シャドウマスクをマスクフレー
ムに固着する製造過程における、シャドウマスクの組立
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for assembling a shadow mask for a color picture tube in the manufacturing process of fixing the shadow mask to a mask frame.
カラー受像管に使用するシャドウマスクは多数の微細な
透過孔を有する０、１〜０．３ａｍ板厚の矩形状金属薄
板で、カラー受像管ネック部に配設された電子銃より射
出される３本の電子ビームをパネル内面に規則正しく設
けられた赤、青及び緑色に発光する蛍光体層の所定の位
置に射突させる色選択機能を有している。したがって、
カラー受像管に組込まれているシャドウマスクは設計的
にパネル内面の曲率と相関のとれた曲率を得るようプレ
ス成形が施されており、もし、マスクフームの曲率が目
的とするものから外れた場合、マスク孔と対をなすパネ
ル内面上の蛍光体との位置関係が崩れ、マスク孔を通過
した電子ビームは異なる色の蛍光体に射突し、色ずれ現
象を引き起こす。The shadow mask used in the color picture tube is a rectangular thin metal plate with a thickness of 0.1 to 0.3 am and has many fine transmission holes. It has a color selection function that causes the electron beams of the book to strike predetermined positions of phosphor layers that emit red, blue, and green light, which are regularly provided on the inner surface of the panel. therefore,
The shadow mask built into a color picture tube is designed to be press-molded to obtain a curvature that correlates with the curvature of the inner surface of the panel.If the curvature of the mask frame deviates from the desired curvature, The positional relationship between the mask hole and the paired phosphor on the inner surface of the panel is disrupted, and the electron beam passing through the mask hole impinges on the phosphor of a different color, causing a color shift phenomenon.
カラー受像管動作中のシャドウマスクの開孔領域外には
電子銃より射出された電子ビームの７０％〜８０％が射
突し、時間の経過と共に、温度上昇を伴い、熱膨張によ
るドーミング現象を起こす。その結果、上述同様のシャ
ドウマスク孔と蛍光体とピ
の相対的位置ずれが生じ、でユリティードリフトと呼ば
れる色ずれ現象が発生する。During operation of the color picture tube, 70% to 80% of the electron beam emitted from the electron gun hits the outside of the aperture area of the shadow mask, and as time passes, the temperature rises and a doming phenomenon due to thermal expansion occurs. wake up As a result, a relative positional shift occurs between the shadow mask hole, the phosphor, and the phosphor as described above, and a color shift phenomenon called utility drift occurs.
ビ
この艶ユリティードリフトによる色ずれ現象を軽減する
ため、シャドウマスク素材にアンバー材（３Ｇ％Ｎｉ−
Ｆｅ合金）等、熱膨張率の小さい鉄−ニッケル系合金を
用いる例が特公昭４２−２５４４６号公報。In order to reduce the color shift phenomenon caused by gloss utility drift, the shadow mask material is made of amber material (3G%Ni-
An example of using an iron-nickel alloy with a small coefficient of thermal expansion, such as Fe alloy), is disclosed in Japanese Patent Publication No. 42-25446.
特開昭５０−５８９７７号公報及び特開昭５０−６８６
５０号公報で提案されており、従来よりシャドウマスク
用素材として使われている鉄を主成分とするリムド鋼や
アルミギルド鋼に代わり、アンバー材に代表される鉄−
ニッケル系合金等を素材とするシャドウマスクが実用化
されている。JP-A-50-58977 and JP-A-50-686
This is proposed in Publication No. 50, and instead of iron-based rimmed steel and aluminum guild steel, which have traditionally been used as materials for shadow masks, iron-based materials such as amber material can be used.
Shadow masks made of materials such as nickel-based alloys have been put into practical use.
しかしながら、例えば、特開昭５９−２００７２１号公
報等に示されているように、アンバー材等Ｆｅ−Ｎｉ系
合金は従来の鉄を主成分とするものに比べてマスクアニ
ール炉で焼鈍を施しても尚降伏点強度が高く、かなりの
弾性が残るため、アンバーシャドウマスク（以下、アン
バー材等Ｆａ −Ｎｉ系合金を素材とするシャドウマス
クをアンバーシャドウマスクと称す。）をマスクフレー
ムに溶接する際、シャドウマスク周縁部の曲面を変形さ
せ、カラー受像管画面周縁部の色純度を劣化させている
。However, as shown in JP-A-59-200721, for example, Fe-Ni alloys such as invar materials are annealed in a mask annealing furnace compared to conventional iron-based alloys. However, since the yield point strength is high and considerable elasticity remains, when welding an amber shadow mask (hereinafter, a shadow mask made of Fa-Ni alloy such as amber material is referred to as an amber shadow mask) to a mask frame. , the curved surface of the peripheral edge of the shadow mask is deformed, and the color purity of the peripheral edge of the color picture tube screen is degraded.
すなわち、従来より、プレス成形されたアンバーシャド
ウマスクは降伏点強度が高いため第５図に示すようにマ
スクスカート部■が外方へ反った形状となりやすく、マ
スクフレームとの間にその先端で約１〜２ｍの間隔が開
く。場合によってはアンバーシャドウマスクの長辺側中
央部では外方にさらに２〜４ｍ程反ったものとなってし
まう。In other words, because conventionally press-molded amber shadow masks have a high yield point strength, the mask skirt part ■ tends to curve outward as shown in Figure 5, and there is a gap between the mask frame and the tip at the tip. There will be a gap of 1 to 2 meters. In some cases, the central portion of the longer side of the amber shadow mask may be further warped outward by approximately 2 to 4 meters.
第２図に示すように、このような形状のアンバーシャド
ウマスクをＸ印で示す各点でマスクフレームに固着する
と、アンバーシャドウマスクの場合、弾性が強いため、
シャドウマスク・スカート部■の部分的な凹凸の発生に
伴い、第３図の破線に示すようにシャドウマスク周縁部
■に著しい変形を発生させ、成形マスクの目的とする曲
面が崩れ、色ずれ現象を引き起こしてしまう、という問
題点がある。As shown in Figure 2, when an amber shadow mask with such a shape is fixed to the mask frame at each point indicated by the X mark, the amber shadow mask has strong elasticity, so
Due to the occurrence of partial irregularities in the shadow mask skirt part ■, significant deformation occurs in the shadow mask peripheral part ■ as shown by the broken line in Figure 3, the intended curved surface of the molded mask collapses, and a color shift phenomenon occurs. The problem is that it can cause
シャドウマスク周縁部近傍を加熱することによりシャド
ウマスクの耐力を低下させ、シャドウマス液
り周縁部の変形を・抑制することと相埃って、マスク曲
面品位を向上させ、シャドウマスクの機械的強度を高め
ることができるシャドウマスクの組立方法を提供するこ
とを目的とする。By heating the vicinity of the periphery of the shadow mask, the yield strength of the shadow mask is lowered, and deformation of the periphery of the shadow mask liquid is suppressed.This also improves the quality of the mask curved surface and increases the mechanical strength of the shadow mask. An object of the present invention is to provide a method for assembling a shadow mask that can enhance the shadow mask.
本発明はＦｅ−Ｎｉ系合金を素材とするシャドウマスク
をマスクフレームに溶接する際にマスクスカート部近傍
を加熱し、マスクスカート部及びシャドウマスク周縁部
の耐力を低下させた後、シャドウマスクとマスクフレー
ムを溶接することによってシャドウマスク形状の変形を
防止し、シャドウマスクの曲面品位を向上させることが
できる。In the present invention, when welding a shadow mask made of an Fe-Ni alloy to a mask frame, the vicinity of the mask skirt is heated to reduce the yield strength of the mask skirt and the peripheral edge of the shadow mask. By welding the frame, deformation of the shape of the shadow mask can be prevented and the quality of the curved surface of the shadow mask can be improved.
以下１本発明の実施例について説明する。 An embodiment of the present invention will be described below.
第１図は本発明の一実施例を示すシャドウマスクとマス
クフレーム部の概略断面図である。FIG. 1 is a schematic sectional view of a shadow mask and a mask frame portion showing one embodiment of the present invention.
第１図においてＦｅ −Ｎｉ系合金を素材とする矩形状
のシャドウマスクに）には多数の電子ビーム透過孔が穿
設されており、このシャドウマスク（イ）の周縁部■近
傍をヒーター又はバーナー加熱により加熱する。ここで
Ｆｅ −Ｎｉ系合金、（例えばアンバー材）の降伏点強
度は高いが第４図に示すように室温程度の低温からの温
度上昇によってアンバー材の耐力は急激に低下し２００
℃付近から飽和する傾向がある。そこでシャドウマスク
（イ）の周縁部■近傍を各０℃以上に加熱した後、シャ
ドウマスクのスカート部■をマスクフレーム■に押しつ
け、シャドウマスク（イ）をマスクフレーム（３）に溶
接固定する。In Fig. 1, a rectangular shadow mask made of Fe-Ni alloy (A) has a large number of electron beam transmission holes, and a heater or burner is placed near the periphery of this shadow mask (A). Heat by heating. Here, the yield point strength of Fe-Ni alloys (for example, invar material) is high, but as shown in Figure 4, the yield strength of invar material decreases rapidly as the temperature rises from a low temperature of around room temperature.
It tends to become saturated from around ℃. Therefore, after heating the vicinity of the peripheral edge (2) of the shadow mask (A) to 0° C. or above, the skirt portion (2) of the shadow mask is pressed against the mask frame (3), and the shadow mask (A) is welded and fixed to the mask frame (3).
上記組立方法によれば、鉄及びニッケルを生成分とする
金属板が焼鈍後に高い降伏点強度を有している場合であ
っても、シャドウマスク（へ）をマスクフレーム■に溶
接する際に、シャドウマスク６）の周縁部■近傍を５０
℃以上に加熱することにより、シャドウマスクのスカー
ト部■及び周縁部■の耐力を充分に低下させることが可
能であり、その状態で外方に反ったシャドウマスクのス
カート部■を内方に押し込むことで不都合な変形を抑制
しシャドウマスクに）のプレス成形後の周縁部のに発生
する曲面品位の乱れ、いわゆる辺落ちを回復させること
が可能となる。さらには、溶接時に生じるシャドウマス
クのスカート部■の部分的な凹凸を軽減でき、シャドウ
マスク（イ）のマスクフレーム■への密着度を高めるこ
とができ、その結果、シャドウマスクに）の機械的強度
を高めることが可能となる。According to the above assembly method, even if the metal plate containing iron and nickel has a high yield point strength after annealing, when welding the shadow mask to the mask frame 50 near the periphery of the shadow mask 6)
By heating above ℃, it is possible to sufficiently reduce the yield strength of the skirt part ■ and the peripheral part ■ of the shadow mask, and in this state, the skirt part ■ of the shadow mask that has curved outward can be pushed inward. This makes it possible to suppress undesirable deformation and restore the so-called edge drop, which is the disturbance in the quality of the curved surface that occurs at the peripheral edge of the shadow mask after press molding. Furthermore, it is possible to reduce the partial unevenness of the shadow mask skirt (■) that occurs during welding, and it is possible to increase the degree of adhesion of the shadow mask (A) to the mask frame ■, resulting in a mechanical It becomes possible to increase the strength.
以上のように本発明によれば、鉄−ニッケル系合金を主
成分とするシャドウマスクとマスクフレーム組立後の曲
面形状の変形を防止し、設計曲率に忠実なマスク曲面品
位を得ることが可能になる杷
ことと覇俟って、シャドウマスクのマスクフレームへの
密着度を高めることで、その機械的強度を向上させるこ
とができる。As described above, according to the present invention, it is possible to prevent the deformation of the curved surface shape after assembling the shadow mask and mask frame mainly composed of an iron-nickel alloy, and to obtain a mask curved surface quality that is faithful to the designed curvature. By increasing the adhesion of the shadow mask to the mask frame, its mechanical strength can be improved.
第１図は本発明の一実施例を示すシャドウマスクとマス
クフレームの周縁部の一部を示す概略断面図、第２図は
従来のシャドウマスク組立方法を説明するための概略平
面図、第３図は従来のシャドウマスク組立方法を説明す
るための概略断面図、第４図はＦｅ −Ｎｉ系合金の引
張り試験温度と降伏点強度との関係を示す特性図、第５
図はシャドウマスクとマスクフレームの周縁部の一部を
示す概略断面図である。
■・・・周縁部 ■・・・スカート部■・
・・マスクフレーム
代理人 弁理士 則 近 憲 佑
同 大胡典夫FIG. 1 is a schematic cross-sectional view showing a part of the periphery of a shadow mask and a mask frame according to an embodiment of the present invention, FIG. 2 is a schematic plan view for explaining a conventional shadow mask assembly method, and FIG. The figure is a schematic cross-sectional view for explaining the conventional shadow mask assembly method, Figure 4 is a characteristic diagram showing the relationship between the tensile test temperature and yield point strength of Fe-Ni alloy, and Figure 5
The figure is a schematic cross-sectional view showing a part of the peripheral edge of the shadow mask and the mask frame. ■...Peripheral part ■...Skirt part■・
・・Mask frame agent Patent attorney Nori Chika Yudo Norio Ogo
Claims (1)
形成した鉄及びニッケルを主成分とする薄板状合金から
なるシャドウマスクと、このシャドウマクの周縁部を支
持するマスクフームの組立過程において、前記シャドウ
マスクの周縁部近傍を加熱した後、前記シャドウマスク
を前記マスクフレームに固着することを特徴とするシャ
ドウマスクの組立方法。 ２）前記加熱を伴なう固着時のシャドウマスクの温度を
５０℃以上とすることを特徴とする特許請求の範囲第１
項記載のシャドウマスクの組立方法。[Claims] 1) A shadow mask made of a thin plate-like alloy mainly composed of iron and nickel and having a large number of electron beam transmission holes and a predetermined radius of curvature, and supporting the peripheral edge of the shadow mask. A method for assembling a shadow mask, comprising: heating the vicinity of the peripheral edge of the shadow mask in the mask frame assembly process, and then fixing the shadow mask to the mask frame. 2) Claim 1, characterized in that the temperature of the shadow mask during fixation accompanied by heating is 50° C. or higher.
How to assemble the shadow mask described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1100986A JPS62170127A (en) | 1986-01-23 | 1986-01-23 | Assembly of shadow mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1100986A JPS62170127A (en) | 1986-01-23 | 1986-01-23 | Assembly of shadow mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62170127A true JPS62170127A (en) | 1987-07-27 |
Family
ID=11766120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1100986A Pending JPS62170127A (en) | 1986-01-23 | 1986-01-23 | Assembly of shadow mask |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62170127A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6104132A (en) * | 1996-03-11 | 2000-08-15 | Hitachi, Ltd. | Color cathode ray tube |
| US6307310B1 (en) | 1996-09-17 | 2001-10-23 | Hitachi, Ltd. | Color cathode-ray tube |
-
1986
- 1986-01-23 JP JP1100986A patent/JPS62170127A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6104132A (en) * | 1996-03-11 | 2000-08-15 | Hitachi, Ltd. | Color cathode ray tube |
| US6278232B1 (en) | 1996-03-11 | 2001-08-21 | Hitachi, Ltd. | Color cathode ray tube |
| US6518696B2 (en) | 1996-03-11 | 2003-02-11 | Hitachi, Ltd. | Color cathode ray tube with shadow mask and mask frame having round corners |
| US6307310B1 (en) | 1996-09-17 | 2001-10-23 | Hitachi, Ltd. | Color cathode-ray tube |
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