JPS59211932A - Manufacture of member for color picture tube - Google Patents
Manufacture of member for color picture tubeInfo
- Publication number
- JPS59211932A JPS59211932A JP8607583A JP8607583A JPS59211932A JP S59211932 A JPS59211932 A JP S59211932A JP 8607583 A JP8607583 A JP 8607583A JP 8607583 A JP8607583 A JP 8607583A JP S59211932 A JPS59211932 A JP S59211932A
- Authority
- JP
- Japan
- Prior art keywords
- color picture
- picture tube
- shadow mask
- substrate
- base material
- 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
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
- H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes
- H01J9/146—Surface treatment, e.g. blackening, coating
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
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に用いられる部材の製造方法の改
良に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a method of manufacturing a member used in a color picture tube.
一般に、カラー受像管は図に示す構成となっている。即
ち、図中の1はガラス外囲器である。Generally, a color picture tube has the configuration shown in the figure. That is, 1 in the figure is a glass envelope.
この外囲器1の一端のネック部2には例えばインライン
配列の電子銃3が設けられ、かつ該電子銃3と対向する
他端部のフェース部4には多数の赤、青、及び緑に区分
されたけい光面5が配設されている。とのけい光面5に
近接して多数のビーム開孔を有するシャドウマスク6が
配設されている。このシャドウマスク6はフレーム7に
係止具8を介して取シ付けられており、かつ該フレーム
1には前記電子銃3側に地磁気を遮断するためのインナ
ーシールド9が取付けられている。こうした構成のカラ
ー受像管において、電子銃3から射出された電子ビーム
11は集束、加速され、偏向装置10によって偏向され
、シャドウマスク6の開孔を通ってけい光面5に射突し
、カラー映像を再現する。A neck portion 2 at one end of the envelope 1 is provided with, for example, an in-line electron gun 3, and a face portion 4 at the other end facing the electron gun 3 is provided with a large number of red, blue, and green colors. A segmented fluorescent surface 5 is provided. A shadow mask 6 having a large number of beam apertures is disposed adjacent to the fluorescent surface 5 of the light source. This shadow mask 6 is attached to a frame 7 via a fastener 8, and an inner shield 9 is attached to the frame 1 on the electron gun 3 side for blocking earth's magnetic field. In the color picture tube having such a configuration, the electron beam 11 emitted from the electron gun 3 is focused, accelerated, deflected by the deflection device 10, and impinges on the fluorescent surface 5 through the aperture of the shadow mask 6. Reproduce the image.
ところで、前記カラー受像管に用いられるシャドウマス
ク、フレーム及びインナーシールドの部材は、従来よシ
エッチング性、成形性がよく、電子ビーム反射の軽減に
寄与する酸化膜を簡単に作シ易いリムド鋼やAtキルド
鋼で形成されていた。しかしながら、最近、ノ母ソコン
のディスプレイ、文字多重放送、衛生放送、キャプテン
システム等が一部実用化されるに伴ないテレビ画面の1
見やすさ”や1きめ細やかさ”が重視されるようになる
につれて、前記リムド鋼やAtキル、ド鋼からなるシャ
ドウマスク等の部材を使用することは次のような理由か
ら困難であった・
即ち、一般にカラー受像管を動作させると、各部材温度
は30〜60℃に上昇し、例えばシャドウマスクに関し
ては熱膨張によシ成形形状がゆがむ、いわゆるドーミン
グが生じる。この結果、電子ビーム軌道上に有するべき
シャドウマスクの開孔部とけい光面のけい光層との相対
位置関係がずれ、ピユリティ−ドリフ)(PD)と呼ば
れる色ずれ現象が発生する。上述したきめ細やかで見や
すいカラー受像管ではシャドウマスクの開孔部ピッチ及
び孔径が非常に小さいため、ドーミングによるシャドウ
マスク開孔部とけい光面のけい光層との相対位置のずれ
量に対する色ずれ程度は民生用に比較して著しく大きく
、従来の熱膨張係数の大きいリムド鋼やアルミキルド鋼
からなるシャドウマスクでは実用に耐えない。Incidentally, the members of the shadow mask, frame, and inner shield used in the color picture tube are conventionally made of rimmed steel, which has good etching properties and formability, and which makes it easy to form an oxide film that contributes to reducing electron beam reflection. It was made of At-killed steel. However, recently, with the practical use of motherboard displays, teletext broadcasting, satellite broadcasting, captain systems, etc., one part of the television screen
As more and more emphasis has been placed on visibility and fine detail, it has become difficult to use components such as shadow masks made of rimmed steel, At-kill steel, and solid steel for the following reasons: That is, in general, when a color picture tube is operated, the temperature of each member increases to 30 to 60 DEG C., and for example, in the case of a shadow mask, the molded shape is distorted due to thermal expansion, which is so-called doming. As a result, the relative positional relationship between the aperture of the shadow mask, which should be located on the trajectory of the electron beam, and the phosphor layer on the phosphor surface is shifted, and a color shift phenomenon called purity drift (PD) occurs. In the detailed and easy-to-see color picture tube described above, the pitch and diameter of the apertures in the shadow mask are very small, so the degree of color shift is dependent on the amount of relative positional shift between the apertures in the shadow mask and the phosphor layer on the phosphor surface due to doming. is significantly larger than that for consumer use, and conventional shadow masks made of rimmed steel or aluminum-killed steel with large coefficients of thermal expansion cannot withstand practical use.
このようなことから、熱膨張係数の小さいFe−N1合
金、例えばアン” (36Ni−Fe )で形成した
シャドウマスク等のカラー受像管用部材が提案されてい
る(特公昭42−25446、特開昭50−58977
、特開昭5O−68650)。For this reason, members for color picture tubes such as shadow masks formed of Fe-N1 alloys with a small coefficient of thermal expansion, such as 36Ni-Fe, have been proposed (Japanese Patent Publication No. 42-25446, 50-58977
, Japanese Unexamined Patent Publication No. 5O-68650).
しかしながらアンバー等のPa−Ni合金は熱伝導率が
低く、蓄熱し易いために、よシ色ずれの少ないカラー受
像管を得るには限界があった。However, since Pa-Ni alloys such as amber have low thermal conductivity and easily accumulate heat, there is a limit to the ability to obtain a color picture tube with little color shift.
本発明は色ずれが極めて少なく、きめ細やかで見やすい
カラー受像管を実現し得るシャドウマスク等の部材の製
造方法を提供しようとするものである。An object of the present invention is to provide a method for manufacturing members such as a shadow mask, which can realize a color picture tube with very little color shift and fine detail and easy viewing.
本発明はカラー受像管に用いられるシャドウマスク、フ
レーム及びインナーシールドのうちの少なくとも1つの
部材を製造するにあたシ、F・及びNlを主成分とする
基材を作製した後、該基材を化成処理することにより基
材表面に黒色皮膜を形成せしめることを特徴とするもの
である。このような方法によればFe及びN1を主成分
とする基材による熱膨張率の小さい性質を有すると共に
、該基材表面に形成された黒色皮膜による優れた放熱性
を有するカラー受像管用部材、例えばシャドウマスクを
製造できる。つ!、シ、前記基材の優れた低熱膨張性を
生・かしつつ、その熱伝導性の低い性質(蓄熱し易い性
質)を該基材を化成処理することによって形成された黒
色皮膜の優れた放熱性によシ補償したシャドウマスクを
得ることができる。その結果、このシャドウマスクをパ
ソコンのディスプレイ等に用いられるカラー受像管に組
込んだ場合、使用時の温度上昇によるドーミングを著し
く改善し、シャドウマスクの微細な開孔部とけい光面の
けい光層との相対位置ずれに伴なう色ずれを5−
著しく抑制でき、ひいてはシャドウマスクの開孔部の微
細化による“きめ細やかさ”や1見やすさ”が効果的に
達成されたカラー受像管を実現できる。The present invention is directed to manufacturing at least one member of a shadow mask, a frame, and an inner shield used in a color picture tube, after producing a base material containing F and Nl as main components, It is characterized by forming a black film on the surface of the base material by subjecting it to a chemical conversion treatment. According to this method, a member for a color picture tube has a low coefficient of thermal expansion due to the base material mainly containing Fe and N1, and has excellent heat dissipation due to the black film formed on the surface of the base material, For example, shadow masks can be manufactured. One! , C. While taking advantage of the excellent low thermal expansion of the base material, the low thermal conductivity property (property of easily accumulating heat) can be improved by chemical conversion treatment of the base material. A shadow mask with better heat dissipation performance can be obtained. As a result, when this shadow mask is incorporated into a color picture tube used in a computer display, etc., it significantly improves doming caused by temperature rise during use, and the phosphor layer on the fine aperture of the shadow mask and the phosphor layer on the phosphor surface. 5- A color picture tube that can significantly suppress color misalignment caused by relative positional deviation between realizable.
上記re及びNiを主成分とする基材を作製するにはミ
例えば30〜40%Ni、Fs及び付随的成分からなる
合金のインが、ト、又ハ0.1〜7%Co、31〜35
.9%Nl 、 Fa及び付随的成分からなる合金のイ
ンプットを焼鈍、冷間加工を繰シ返して板材とした後、
プレス加工する方法等を採用し得る。In order to produce a base material containing the above-mentioned re and Ni as main components, an alloy consisting of, for example, 30 to 40% Ni, Fs and incidental components, and c) 0.1 to 7% Co, 31 to 7% 35
.. After the alloy input consisting of 9% Nl, Fa and incidental components was repeatedly annealed and cold-worked into a plate material,
A method such as pressing may be adopted.
上記化成処理によシ基材表面に形成された黒色皮膜は完
全黒体の輻射率を1とすると、0.4以上の輻射率を有
する。The black film formed on the surface of the substrate by the above chemical conversion treatment has an emissivity of 0.4 or more, assuming that the emissivity of a perfect black body is 1.
次に、本発明をカラー受像管用部材(シャドウマスク、
フレーム及びインナーシールド)のうちのシャドウマス
クの製造に適用した例について説明する。Next, the present invention is applied to color picture tube members (shadow masks,
An example in which the present invention is applied to manufacturing a shadow mask of a frame and an inner shield will be described.
6−
実施例1
まず、36%NiとFeを主成分とし、付随的成分とし
てのC、Si 、 Mn + P 、 Sを夫々重量比
で1チ以下含む合金(アンバー)のインゴットを用意し
、このインゴットを焼鈍、冷間加工を繰返して厚さ0.
15m5の板材とした。つづいて、この板材に感光剤塗
布、露光、現像、バーニングによるエツチングを施して
多数の穴を有するフラットマスク素材を作製した。ひき
つづき、このフラットマスク素材を洗浄し、せん断した
後、1150℃で真空焼鈍を行ないプレス加工してマス
ク基材を作製した。次いで、このマスク基材を脱脂、酸
洗、水洗した後、下記表に示す条件で化成処理してアン
バーからなるマスク基材表面に黒色皮膜を形成した7種
のシャドウマスクを製造した。6- Example 1 First, an ingot of an alloy (amber) containing 36% Ni and Fe as main components and 1 inch or less of C, Si, Mn + P, and S as incidental components by weight was prepared, This ingot was repeatedly annealed and cold worked to a thickness of 0.
It was made into a 15m5 board. Subsequently, this plate material was coated with a photosensitizer, exposed, developed, and etched by burning to produce a flat mask material having a large number of holes. Subsequently, this flat mask material was washed, sheared, vacuum annealed at 1150° C., and pressed to produce a mask base material. Next, this mask base material was degreased, pickled, and washed with water, and then subjected to chemical conversion treatment under the conditions shown in the table below to produce seven types of shadow masks in which a black film was formed on the surface of the mask base material made of amber.
しかして、本実施例1〜7のシャドウマスクを組込んだ
図示のカラー受像管に映像をうつしたところ、いずれも
安定した画像が得られた。When images were transferred to the illustrated color picture tube incorporating the shadow masks of Examples 1 to 7, stable images were obtained in all cases.
また、これらカラー受像管及び黒色皮膜なしのアンバー
カラなるシャドウマスクを組込んだカラー受像管(従来
例)についてPD値を測定したところ、従来例では12
0μm程度であったのに対し、本実施例1〜7のシャド
ウマスクを組込んだカラー受像管はいずれも90μm以
下と極めて低い値を示した。更に、本実施例1〜7のシ
ャドウマスクを組込んだカラー受像管はいずれもPDが
生じてから正常に戻るまでの時間が半分に減少した。そ
の他、本実施例1〜7のシャドウマスクについて906
曲げ試験後、曲げ部にセロテープを付着させ、剥離して
黒色皮膜の密着性を調べたところ、いずれも黒色皮膜の
剥離は全く生じなかった゛。In addition, when we measured the PD value of these color picture tubes and a color picture tube (conventional example) incorporating an amber color shadow mask without a black film, we found that the PD value of the conventional example was 12.
On the other hand, the color picture tubes incorporating the shadow masks of Examples 1 to 7 all showed extremely low values of 90 μm or less. Furthermore, in all of the color picture tubes incorporating the shadow masks of Examples 1 to 7, the time from occurrence of PD to return to normality was reduced by half. In addition, 906 regarding the shadow masks of Examples 1 to 7.
After the bending test, cellophane tape was attached to the bent portion and peeled off to examine the adhesion of the black film, and no peeling of the black film occurred in any case.
なお、上記化成処理により形成された皮膜は非晶質にな
ることもあるが、加熱することにより十分緻密で放熱性
の優れた黒色皮膜に変換できる。Although the coating formed by the above chemical conversion treatment may become amorphous, heating can convert it into a sufficiently dense black coating with excellent heat dissipation.
以上詳述した如く、本発明によれば熱膨張率が小さい反
面、熱伝導率が小さく蓄熱し易いFe及びN1を主成分
とする基材を作製し、この基材を化成処理して該基材表
面に放熱性の優れた黒色皮膜を形成することによって、
色ずれが極めて小さく、パソコン、衛生放送等の1きめ
細やかさ”や6見やすさ”が重視されるカラー受像管を
実現し得るカラー受像管用部材の製造方法を提供できる
。As described in detail above, according to the present invention, a base material whose main components are Fe and N1, which have a small thermal expansion coefficient but a low thermal conductivity and which easily accumulate heat, is prepared, and this base material is subjected to a chemical conversion treatment. By forming a black film with excellent heat dissipation on the material surface,
It is possible to provide a method for manufacturing a member for a color picture tube, which can realize color picture tubes in which color shift is extremely small and where 1. fineness and 6. ease of viewing are important for personal computers, satellite broadcasting, etc.
図はカラー受像管を示す断面図である。
1・・・外囲器、3・・・電子銃、5・・・けい光面、
6・・・シャドウマスク、7・・・フレーム、9・・・
インナーシールド、10・・・偏向装置。The figure is a sectional view showing a color picture tube. 1... Envelope, 3... Electron gun, 5... Fluorescent surface,
6... Shadow mask, 7... Frame, 9...
Inner shield, 10... deflection device.
Claims (2)
フレーム及びインナーシールドのうゝちの少なくとも1
つの部材を製造するにあたり、F・及びN1を主成分と
する基材を作製した後、該部材表面を化成処理して黒色
皮膜を形成することを特徴とするカラー受像管用部材の
製造方法。(1) Shadow mask used in color picture tubes,
At least one of a frame and an inner shield
1. A method for producing a color picture tube member, which comprises producing a base material containing F and N1 as main components, and then chemically treating the surface of the member to form a black film.
特許請求の範囲第1項記載のカラー受像管用部材の製造
方法。(2) The base material mainly contains Fe and Ni, and C. 2. The method for manufacturing a color picture tube member according to claim 1, wherein the color picture tube member is manufactured from a composition containing the following.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8607583A JPS59211932A (en) | 1983-05-17 | 1983-05-17 | Manufacture of member for color picture tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8607583A JPS59211932A (en) | 1983-05-17 | 1983-05-17 | Manufacture of member for color picture tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59211932A true JPS59211932A (en) | 1984-11-30 |
Family
ID=13876579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8607583A Pending JPS59211932A (en) | 1983-05-17 | 1983-05-17 | Manufacture of member for color picture tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59211932A (en) |
-
1983
- 1983-05-17 JP JP8607583A patent/JPS59211932A/en active Pending
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