JP2683674B2 - Cathode ray tube color selection mechanism - Google Patents
Cathode ray tube color selection mechanismInfo
- Publication number
- JP2683674B2 JP2683674B2 JP63327803A JP32780388A JP2683674B2 JP 2683674 B2 JP2683674 B2 JP 2683674B2 JP 63327803 A JP63327803 A JP 63327803A JP 32780388 A JP32780388 A JP 32780388A JP 2683674 B2 JP2683674 B2 JP 2683674B2
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- JP
- Japan
- Prior art keywords
- color selection
- less
- cathode ray
- ray tube
- color
- 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.)
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、陰極線管の色選別機構に関し、より詳しく
は長時間連続使用しても色ズレが生じ難く、かつ管内絶
縁性に優れた陰極線管の色選別機構に関する。Description: TECHNICAL FIELD The present invention relates to a color selecting mechanism for a cathode ray tube, and more particularly, a cathode ray tube that is less likely to cause color misalignment even when used continuously for a long time and has excellent in-tube insulation properties. It relates to a tube color selection mechanism.
従来、カラー受像管とも呼ばれるカラー陰極線管の色
選別機構には、多数の小孔もしくはスリツトを設けた金
属板（一般に鋼板）でなるシヤドウマスクまたはアパー
チヤグリルが用いられている。通常、カラー陰極線管を
長時間連続使用するとシヤドウマスクは、加速された電
子が衝突するために加熱され、熱膨張によつて歪み、次
第に蛍光面に対する電子のミスランデイングが生じるよ
うになり、画像に色ズレを惹起する事はよく知られてい
る。Conventionally, a shadow mask or an aperture grill made of a metal plate (generally a steel plate) provided with a large number of small holes or slits is used for a color selecting mechanism of a color cathode ray tube, which is also called a color picture tube. Normally, when a color cathode ray tube is used continuously for a long time, the shadow mask is heated due to collision of accelerated electrons, which is distorted due to thermal expansion and gradually causes mislanding of electrons with respect to the phosphor screen, resulting in a color image. It is well known that it causes a gap.
この色ズレを防止するために、素材に熱膨張率の小さ
い36％Ni−Fe合金（アンバー）を用いる事も行なわれて
いるが、素材価格が高く、マスク製造工程でエツチング
が困難であり、またプレス成形性に劣る等、コストアツ
プを免れないという欠点がある。In order to prevent this color shift, it is also used to use a 36% Ni-Fe alloy (amber) with a small coefficient of thermal expansion for the material, but the material price is high and etching in the mask manufacturing process is difficult, In addition, there are drawbacks such as inferior press formability and unavoidable cost up.
アパーチヤグリルはプレス成形されて形を保つ一般の
シヤドウマスクと異なり、強固なフレームによつて一方
向（スリットの長手方向）に架張支持されている。多数
のスリツトを持つ金属板であり、カラー陰極線管中でこ
のスリツトに電子ビームを選択的に通過させる色選別電
極として機能するものである。The aperture grille is supported by being stretched in one direction (longitudinal direction of the slit) by a strong frame, unlike a general sheer mask that is press-formed to maintain its shape. It is a metal plate having many slits and functions as a color selection electrode for selectively passing an electron beam through these slits in a color cathode ray tube.
しかし完成時点でテレビジヨン画面全体の一辺にほぼ
相当するスパンを架張される多数のグリツド素体（スリ
ツトでない部分）において、スピーカその他の発生源よ
り生ずる震動の影響を避けようとすると、相当強力な張
力で以てこの多数のグリツド素体を要部とするアパーチ
ヤグリルを架張支持しなければならない事になる。更に
グリツド素体は後述するように製造工程（黒化処理）中
の張力低下にも耐えなければならない。However, at the time of completion, in a large number of grid elements (non-slit parts) spanned by a span roughly equivalent to one side of the entire TV screen, trying to avoid the effects of vibrations caused by speakers and other sources, it is considerably strong. It is necessary to stretch and support the aperture grille, which has a large number of grid elements, with various tensions. Further, the grid element body must withstand a decrease in tension during the manufacturing process (blackening treatment) as described later.
そこで素材の耐熱クリープ性が無視出来ない要求特性
となつて来た訳である。Therefore, the heat creep resistance of the material has become a required characteristic that cannot be ignored.
また一方で、色選別電極表面には、二次電子の発生、
熱輻射の防止のためと、製造工程中の防錆の目的でその
表面に黒化膜（緻密な酸化鉄層）を付与するが、この黒
化膜の密着性がよくないと陰極線管中にその剥片が散乱
して、管内の耐電圧低下を生ずる事があり、またスリツ
トに付着して画像を悪くすることがあるので、素材面か
ら、前記耐熱クリープ性と同時に黒化膜密着性の改善が
望まれていた。On the other hand, on the surface of the color selection electrode, generation of secondary electrons,
A blackening film (dense iron oxide layer) is applied to the surface for the purpose of preventing heat radiation and for the purpose of rust prevention during the manufacturing process, but if the adhesion of this blackening film is not good, it will appear in the cathode ray tube. Since the flakes may scatter and cause a decrease in withstand voltage in the tube, and may adhere to the slits to deteriorate the image, from the material side, the heat resistant creep resistance and the adhesion of the black film at the same time are improved. Was desired.
なお、従来の色選別機構の製法の一例は次のとおりで
ある。An example of the conventional method for manufacturing the color selecting mechanism is as follows.
すなわち、先ず、0.001％単位の炭素を含有する極低
炭素鋼熱延鋼帯を、板厚0.02〜0.30mmに冷間圧延した
後、エツチングにより多数のグリツド素体を形成して色
選別電極を得る。次にこのアパーチヤグリルを内側に加
圧された状態のフレームにシーム溶接した後、加圧力を
除去する。これにより、グリツド素体にフレームの復元
力が加わつて張力が生じる。この後、二次電子の発生、
熱輻射、工程中の錆発生等を防止するため、酸化性雰囲
気中で（450〜470℃）×（10〜20分間）の黒化処理（加
熱処理）を施している。That is, first, an ultra-low carbon steel hot-rolled steel strip containing 0.001% of carbon was cold-rolled to a plate thickness of 0.02 to 0.30 mm, and then a large number of grid elements were formed by etching to form a color selection electrode. obtain. Next, the aperture grill is seam welded to the frame which is pressed inward, and then the pressure is removed. As a result, the restoring force of the frame is applied to the grid element to generate tension. After this, the generation of secondary electrons,
In order to prevent heat radiation and rust generation during the process, blackening treatment (heat treatment) of (450 to 470 ° C) x (10 to 20 minutes) is performed in an oxidizing atmosphere.
従来、製造中に色選別電極のグリツド素体の張力の低
下が生じることがあり、品質管理上問題となつていた。
これは、前述したアパーチヤグリルの黒化処理の際に熱
と張力により、グリツド素体にクリープ現象が発生して
伸びるからである。このようにクリープ現象が大きくて
張力の低下したグリツド素体は、テレビジヨン受像機を
完成した後、動作中に音量を大きくした際グリツド素体
自体の振動が大きくなつて画面の色ズレの原因となると
いう問題点を有していた。Conventionally, the tension of the grid element of the color selection electrode may decrease during manufacturing, which has been a problem in quality control.
This is because a creep phenomenon occurs in the grid element body and expands due to heat and tension during the blackening treatment of the aperture grill described above. In this way, the grid element whose creep phenomenon is large and whose tension is lowered is the cause of the color shift on the screen because the vibration of the grid element itself becomes large when the volume is increased during operation after completing the television receiver. It had a problem that
そしてこの問題点は、アパーチヤグリルに限らず、そ
の他の平面状マスク等の色選別電極において、一方向ま
たは二方向に張力を加えて振動を防止するタイプのもの
に同様に認められた。This problem is not limited to the aperture grill, but is similarly recognized in other types of color selection electrodes such as planar masks in which vibration is prevented by applying tension in one or two directions.
このような問題点を解決するため、フレームのターン
バツクルの加圧力を上げる、アパーチヤグリル支持フレ
ームの剛性を上げて頑丈にする、ターンバツクルの加圧
点をずらす、スピーカ部と陰極線管の支持部にそれぞれ
クツシヨンを設ける等の対策が考えられたが、未だ十分
な効果は得られなかつた。In order to solve these problems, the pressure applied to the turnbuckle of the frame is increased, the rigidity of the aperture grill support frame is increased to make it sturdy, the pressurization point of the turnbuckle is shifted, and the support parts of the speaker and cathode ray tube are respectively cushioned. Although measures such as provision of measures were considered, sufficient effects have not yet been obtained.
次に黒化処理工程で生成される黒化膜（鉄酸化膜）は
その密着性が劣ると、剥離した黒化膜剥片が管内で色選
別電極のスリツトにおける電子ビーム通過を妨害し画像
に悪影響をもたらす。また、剥片が電子銃に迄飛来し、
耐電圧特性をも劣化させる。Next, if the adhesion of the blackening film (iron oxide film) produced in the blackening process is poor, the peeled blackening film flakes interfere with the electron beam passage in the slit of the color selection electrode in the tube and adversely affect the image. Bring In addition, flakes fly up to the electron gun,
It also deteriorates withstand voltage characteristics.
本発明の目的は、上記のクリープ発生と黒化膜剥離を
防止することが出来る陰極線管の色選別機構を提供する
事にある。An object of the present invention is to provide a color selection mechanism for a cathode ray tube capable of preventing the occurrence of creep and peeling of a blackened film.
本発明により、 少なくとも一方向に架張されてなる色選別電極を有す
る陰極線管の色選別機構において、前記色選別電極が、
Cr:0.20〜2.0％、Mo:0.10〜3.0％を含有する極低炭素鋼
板より形成されてなることを特徴とする陰極線管の色選
別機構 が提供される。According to the present invention, in a color selection mechanism of a cathode ray tube having a color selection electrode stretched in at least one direction, the color selection electrode is
Provided is a color selecting mechanism for a cathode ray tube, which is characterized by being formed from an ultra-low carbon steel sheet containing Cr: 0.20 to 2.0% and Mo: 0.10 to 3.0%.
更に該極低炭素鋼の他の成分が、C:0.08％以下、Si:
0.10％以下、Mn:0.10〜0.60％、P:0.10％以下、S:0.10
％以下、N:100ppm以下、Sol Al:0.10％以下、その他Fe
及び不可避的不純物でなる場合の陰極線管の色選別機能
が提供される。Furthermore, other components of the ultra low carbon steel are C: 0.08% or less, Si:
0.10% or less, Mn: 0.10 to 0.60%, P: 0.10% or less, S: 0.10
% Or less, N: 100 ppm or less, Sol Al: 0.10% or less, other Fe
And a function of color selection of the cathode ray tube when it is made of unavoidable impurities.
以下に本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明者等は色選別電極を構成する鋼板自体の化学成
分を、前記課題に基づいて仔細に見直した結果、黒化処
理時のクリープ発生および黒化膜密着性とCr,Moの含有
量の間に相関があることを見い出した。即ち、クリープ
の大きい色選別電極はCr,Moの含有量が低く、Cr:0.15％
以下、Mo:0.08％以下であつた。一方、Cr,Moの含有量が
多くなる程黒化処理工程でのクリープは小さく、Crが0.
20％、Moが0.10％以上であれば、テレビジヨン画面上の
色ズレは実用上問題が無いことを見い出した。しかし、
Crが2.0％、Moが3.0％を超えると素材の冷間圧延の際、
圧延による加工硬化の程度が著しく、圧延が困難とな
る。The present inventors have made a detailed review of the chemical composition of the steel plate itself that constitutes the color selection electrode based on the above problems, and the occurrence of creep during blackening treatment and the blackened film adhesion and the content of Cr and Mo. I found a correlation between them. That is, the color selection electrode with large creep has a low Cr and Mo content, and Cr: 0.15%.
Below, Mo: 0.08% or less. On the other hand, the higher the Cr and Mo contents are, the smaller the creep in the blackening process is, and the Cr content is 0.
We found that if 20% and Mo are 0.10% or more, the color shift on the TV screen is not a problem in practical use. But,
When Cr exceeds 2.0% and Mo exceeds 3.0%, during cold rolling of the material,
The degree of work hardening by rolling is remarkable, and rolling becomes difficult.
即ち色選別電極は、冷間圧延によつて0.02〜0.30mm程
度に薄くした極低炭素鋼板にエツチングを施すことによ
つて得られるが、この際、板形状および板厚均一性が色
選別電極の品質に直接影響する。実際Crが2.0％、Moが
3.0％を超えると形状並びに均一な板厚の確保が極度に
困難となる。従つて、CrおよびMoの上限をそれぞれ2.0
％、3.0％とした。That is, the color selection electrode is obtained by etching an ultra-low carbon steel sheet thinned to about 0.02 to 0.30 mm by cold rolling.At this time, the plate shape and the plate thickness uniformity are equal to each other. Directly affects the quality of. Actually Cr is 2.0%, Mo is
If it exceeds 3.0%, it is extremely difficult to secure the shape and uniform plate thickness. Therefore, the upper limit of Cr and Mo is 2.0 respectively.
% And 3.0%.
一方、経済性の観点より、Cr乃至Mo単独添加材につい
ても検討したが効果は少なく、同時添加により相乗効果
があるものと考える。On the other hand, from the viewpoint of economic efficiency, a material containing Cr or Mo alone was also examined, but the effect is small, and it is considered that there is a synergistic effect by simultaneous addition.
次に黒化膜密着性についてはMoの効果は認められず、
Crのみが黒化膜密着性改善に効果があつた。Cr含有量と
しては、0.10％以上で効果が認められたが、上述のよう
に、クリープ発生防止の観点より少なくとも0.20％が必
要であり、Crの下限を0.20％とした。Next, the effect of Mo was not recognized for the blackened film adhesion,
Only Cr was effective in improving the black film adhesion. As the Cr content, the effect was recognized at 0.10% or more, but as described above, at least 0.20% is necessary from the viewpoint of preventing the occurrence of creep, and the lower limit of Cr was made 0.20%.
また、極低炭素鋼板の成分はC:0.08％（重量％、以下
同じ、）以下、Si:0.10％以下、Mn:0.10〜0.60％、P:0.
10％以下、S:0.10％以下、N:100ppm以下、Sol.Al:0.10
％以下、残部Fe及び不可避的不純物よりなるものであ
る。以下に前記Cr,Mo以外の成分について限定理由を述
べる。The components of the ultra-low carbon steel sheet are C: 0.08% (weight%, the same below), Si: 0.10% or less, Mn: 0.10 to 0.60%, P: 0.
10% or less, S: 0.10% or less, N: 100ppm or less, Sol.Al:0.10
% Or less, the balance being Fe and inevitable impurities. The reasons for limiting the components other than Cr and Mo will be described below.
Ｃは炭化物を形成し、その量が多くなると色選別電極
製造工程でのエツチング性が阻害されるのでその上限を
0.08％とした。C forms a carbide, and if the amount thereof increases, the etching property in the color selection electrode manufacturing process is impaired, so the upper limit is set.
It was set to 0.08%.
SiはMnO−SiO2、MnO−FeO−SiO2などの珪酸塩系介在
物を形成し、その結果エツチング性を阻害するので0.10
％以下とする。Mnは製鋼工程での脱酸作用と熱間脆性防
止の観点から0.10〜0.60％とした。Si forms a silicate inclusions such as MnO-SiO 2, MnO-FeO -SiO 2, since inhibit result etching resistance 0.10
% Or less. Mn was set to 0.10 to 0.60% from the viewpoint of deoxidizing action in the steelmaking process and prevention of hot embrittlement.
Ｐは、含有量が増すと鋼が硬化し、圧延性が悪くなる
ので0.10％以下とした。If the content of P increases, the steel hardens and the rollability deteriorates, so the content of P was made 0.10% or less.
Ｓは硫化物系介在物を生成し、エツチング性を阻害す
るので上限を0.10％とした。S forms a sulfide-based inclusion and inhibits the etching property, so the upper limit was made 0.10%.
Alは製鋼工程で脱酸剤として作用し、介在物を減少さ
せる。しかし、多すぎるとAl2O3系介在物が増え且つ製
造コストが上昇するので、0.10％以下とした。Al acts as a deoxidizer in the steelmaking process and reduces inclusions. However, if it is too large, the amount of Al 2 O 3 -based inclusions increases and the manufacturing cost increases, so the content was made 0.10% or less.
グリツド素体１本当り50〜60Kg/mm2の張力が掛つてい
る色選別電極に通常（450〜470℃）×（10〜20分間）の
条件で黒化処理を施すことにより、グリツド素体にクリ
ープ現象が生じる。By applying blackening treatment to a color-selecting electrode under tension of 50 to 60 kg / mm 2 per grid element under normal conditions (450 to 470 ° C) x (10 to 20 minutes), the grid element Creep phenomenon occurs in the.
このクリープ現象は、転位の運動による塑性変形であ
る転位クリープと鉄原子自体の拡散による塑性変形であ
る拡散クリープとの複合した結果である。This creep phenomenon is the result of a combination of dislocation creep, which is plastic deformation due to dislocation motion, and diffusion creep, which is plastic deformation due to diffusion of iron atoms themselves.
鉄の拡散係数は温度に依存するため、通常の処理温度
で拡散クリープを抑制することは困難である。そこで、
クリープによるグリツド素体の伸びを小さくするために
は、転位クリープを出来るだけ小さくすることが必要と
なる。Since the diffusion coefficient of iron depends on the temperature, it is difficult to suppress the diffusion creep at normal processing temperature. Therefore,
In order to reduce the elongation of the grid element body due to creep, it is necessary to reduce dislocation creep as much as possible.
この転位クリープを抑制するためには、（ｉ）溶質原
子（Ｎ等）によりコツトレル雰囲気を形成して転位を固
着する方法、（ii）鉄より原子半径の大きい元素を添加
してクリープによる伸びを抑制する方法などが考えられ
る。後者では、溶質原子による歪と転位の歪が相互に作
用して転位の動きが固着されることにより、クリープの
抑制効果が得られる。本発明は基本的には（ii）の考え
方にもとづくもので、Moによる歪と転位歪の相互作用お
よび含Mo炭化物、含Cr炭化物の析出硬化がクリープ発生
を抑制しているものと考えられる。In order to suppress this dislocation creep, (i) a method of forming a Kottrell atmosphere by solute atoms (N, etc.) to fix dislocations, and (ii) adding an element having a larger atomic radius than iron to increase elongation by creep. A method of suppressing it is possible. In the latter case, the strain of solute atoms and the strain of dislocations interact with each other to fix the movement of dislocations, so that an effect of suppressing creep can be obtained. The present invention is basically based on the idea of (ii), and it is considered that the interaction between strain and dislocation strain due to Mo and the precipitation hardening of Mo-containing carbide and Cr-containing carbide suppresses the occurrence of creep.
次に、黒化膜密着性は黒化膜厚が厚くなると一般に悪
くなる。本発明ではCr添加により含Cr鉄酸化膜（黒化
膜）が色選別電極表面に形成され、これが黒化膜の成長
を抑制し、その結果緻密な薄い黒化膜が得られ、その密
着性が向上するものと考えられる。Next, the adhesion of the blackened film generally becomes worse as the blackened film becomes thicker. In the present invention, the Cr-containing iron oxide film (blackening film) is formed on the surface of the color selection electrode by the addition of Cr, which suppresses the growth of the blackening film, and as a result, a dense and thin blackening film is obtained, and its adhesion Is expected to improve.
第１図はカラー陰極線管に使用される色選別機構の１
例を示す斜視図である。この色選別機構１は、相対向す
る１対の支持部材２とこれらの支持部材２を所定間隔に
保つ弾性部材３より成る枠状のフレーム４及び対向する
支持部材２上に架張された色選別電極５（所謂アパーチ
ヤグリル）を有して構成されている。このアパーチヤグ
リル５は、隣り合うグリツド素体６間が電子ビームの通
過するスリツト７となるように所定のピツチをもつて多
数のグリツド素体６が形成されて成る。FIG. 1 shows a color selection mechanism used in a color cathode ray tube.
It is a perspective view showing an example. The color selection mechanism 1 has a frame-shaped frame 4 composed of a pair of opposing support members 2 and an elastic member 3 for keeping the support members 2 at a predetermined distance, and a color stretched on the opposing support member 2. It has a selection electrode 5 (a so-called aperture grill). The aperture grille 5 is formed by forming a large number of grid elements 6 with predetermined pitches so that the slits 7 through which electron beams pass are formed between adjacent grid elements 6.
本実施例においては、Cr:0.50％、Mo:0.15％の極低炭
素鋼を使用する。この極低炭素鋼を厚さ0.02〜0.30mmに
圧延して鋼板を作製する。この鋼板の材料抗張力は、85
〜100Kg/mm2である。次にこの極低炭素鋼板にエツチン
グを施して多数のグリツド素体６を形成し、アパーチヤ
グリル５を得る。次に支持部材２が内側に加圧変形され
た状態のフレーム４にこのアパーチヤグリル５をシーム
溶接した後、加圧力を除去する。この際のフレーム４に
架張されたグリツド素体の１本当りの張力は50〜70Kg/m
m2である。In this embodiment, an ultra low carbon steel containing Cr: 0.50% and Mo: 0.15% is used. This ultra low carbon steel is rolled to a thickness of 0.02 to 0.30 mm to produce a steel plate. The material tensile strength of this steel sheet is 85
~ 100 Kg / mm 2 . Next, this ultra-low carbon steel plate is subjected to etching to form a large number of grid elements 6 to obtain an aperture grill 5. Next, after the aperture grille 5 is seam welded to the frame 4 in which the support member 2 is pressed and deformed inward, the pressing force is removed. At this time, the tension of one grid element body suspended on the frame 4 is 50 to 70 kg / m.
a m 2.
なお、このグリツド素体６の張力は、共振周波数を測
定し、次の関係式より求めたものである。The tension of the grid element body 6 is obtained by measuring the resonance frequency and using the following relational expression.
Ｔ＝4qf2l2/G ここにT:グリツド素体１本当りの張力、f:共振周波
数、q:グリツド素体の質量、G:重力加速度、l:グリツド
素体の長さを夫々表わす。T = 4qf 2 l 2 / G where T: tension per grid element, f: resonance frequency, q: mass of grid element, G: gravitational acceleration, l: length of grid element, respectively. .
次にこのアパーチヤグリル５に450〜470℃の温度で10
〜20分間黒化処理を施す。なお、この黒化処理には歪取
りの目的を有する。Next, this aperture grill 5 is heated to 10
Apply blackening treatment for ~ 20 minutes. The blackening process has the purpose of removing distortion.
第２図は黒化処理前と黒化処理後のアパーチヤグリル
５の端部８と中央部９におけるグリツド素体６の張力を
測定した結果を、比較例と併せて示すグラフである。FIG. 2 is a graph showing the results of measuring the tension of the grid element body 6 at the end portion 8 and the central portion 9 of the aperture grill 5 before and after the blackening treatment together with the comparative example.
第２図において、曲線１は黒化処理前のグリツド素体
６の張力、曲線IIは本実施例に係るグリツド素体６の黒
化処理後の張力、曲線IIIは比較例であるグリツド素体
の黒化処理後の張力をそれぞれ示す。このグラフは、ア
パーチヤグリル５の端部８において、黒化処理後の張力
の低下の割合が比較例（曲線III）と比べて本実施例に
係るアパーチヤグリル５（曲線II）の方が小さく、従つ
て、クリープの発生が抑制されていることを示してい
る。この結果、本発明実施例であるグリツド素体の黒化
処理後の張力は黒化処理前と余り変つていない。画面の
色ズレは、特にアパーチヤグリル５の端部８におけるグ
リツド素体６の伸びが大きく影響するため、端部８にあ
るグリツド素体６の張力低下を小さく抑えることが重要
である。In FIG. 2, curve 1 is the tension of the grid element body 6 before the blackening treatment, curve II is the tension of the grid element body 6 according to the present embodiment after the blackening treatment, and curve III is the grid element body of the comparative example. The tension after the blackening treatment is shown. This graph shows that in the end portion 8 of the aperture grill 5, the rate of decrease in tension after blackening treatment is smaller in the aperture grill 5 according to this example (curve II) than in the comparative example (curve III), and therefore, , Indicates that the occurrence of creep is suppressed. As a result, the tension of the grid element body of the present invention after the blackening treatment is not so different from that before the blackening treatment. The color shift of the screen is greatly affected by the elongation of the grid element body 6 particularly at the end portion 8 of the aperture grill 5, so it is important to suppress the decrease in tension of the grid element body 6 at the end portion 8 to a small level.
次に、第１表に代表的実施例と、従来使用している比
較例の成分を、又第２表に黒化処理前後のグリツド素体
に加わつている張力を示す。Next, Table 1 shows the components of the representative example and the comparative example used conventionally, and Table 2 shows the tension applied to the grid element body before and after the blackening treatment.
第２表より、Cr,Moの成分を増加させたことにより黒
化処理における張力低下が小さくなり、クリープが抑制
されていることがわかる。この結果グリツド素体の黒化
処理後の張力は、黒化処理前の張力との差が比較例に比
して小さいことが明らかである。 It can be seen from Table 2 that the increase in the Cr and Mo components reduces the decrease in tension during the blackening treatment and suppresses creep. As a result, it is apparent that the tension of the grid element after the blackening treatment has a smaller difference from the tension before the blackening treatment as compared with the comparative example.
本発明によれば、アパーチヤグリル、平面状マスク等
のような一方向もしくは二方向に張力を付して架張する
色選別電極（マスクの孔は丸孔、多角形孔または矩形状
孔を含む。）を構成する鋼板中のCr,Mo成分を所定範囲
に制御することにより、黒化処理後のクリープの発生を
抑制することができ、従つてグリツド素体等の架橋部の
張力の低下を低く抑えることができる。しかも同時に黒
化膜密着性も向上出来るので陰極線管内の耐電圧特性を
確保できる。これにより従来のようにクリープ現象が原
因となつて発生していた画面の色ズレの防止を図ること
が可能になる。また、そのための従来のようなフレーム
の設計変更、更にそれに伴う関連設備の変更は必要なく
なる。According to the present invention, a color selection electrode (a hole in a mask includes a round hole, a polygonal hole, or a rectangular hole) which is stretched by applying tension in one or two directions such as an aperture grill or a flat mask. By controlling the Cr and Mo components in the steel sheet that compose) within a predetermined range, it is possible to suppress the occurrence of creep after blackening treatment, and thus to reduce the decrease in the tension of the bridge part of the grid element body, etc. Can be suppressed. Moreover, at the same time, the adhesion of the blackening film can be improved, so that the withstand voltage characteristic in the cathode ray tube can be secured. As a result, it is possible to prevent the color shift of the screen, which has been caused by the creep phenomenon as in the past. In addition, it is not necessary to change the design of the frame for that purpose and the related equipment accordingly.
第１図は色選別機構の斜視図、第２図は黒化処理の前後
におけるアパーチヤグリルの端部と中央部におけるグリ
ツド素体の張力を測定したグラフである。 １……色選別機構、４……フレーム、 ５……色選別電極（アパーチヤグリル）、 ６……グリツド素体。FIG. 1 is a perspective view of the color selection mechanism, and FIG. 2 is a graph in which the tension of the grid element body at the end portion and the central portion of the aperture grill before and after the blackening treatment is measured. 1 ... Color selection mechanism, 4 ... Frame, 5 ... Color selection electrode (aperture grill), 6 ... Grid element body.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 久米 尚雄 愛知県稲沢市大矢町茨島30番地 ソニー 稲沢株式会社内 (72)発明者 桑島 秀一 愛知県稲沢市大矢町茨島30番地 ソニー 稲沢株式会社内 (72)発明者 ▲桑▼山 清保 愛知県稲沢市大矢町茨島30番地 ソニー 稲沢株式会社内 (56)参考文献 特開 平１−289053（ＪＰ，Ａ) 特開 昭63−259054（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nao Kume, 30 Inazawa, Oya-machi, Inazawa, Aichi, Sony Inazawa Co., Ltd. 72) Inventor ▲ Muwa Kuyama ▼ 30 Kiyoho, Inazawa, Inazawa, Aichi 30, Sony Inazawa Co., Ltd. (56) References JP-A 1-289053 (JP, A) JP-A 63-259054 (JP, A) )
Claims (2)
電極を有する陰極線管の色選別機構において、前記色選
別電極が、Cr:0.20〜2.0％（重量％、以下同じ）、Mo:
0.10〜3.0％を含有する極低炭素鋼板より形成されてな
ることを特徴とする陰極線管の色選別機構。1. A color selection mechanism for a cathode ray tube having a color selection electrode extending in at least one direction, wherein the color selection electrode comprises Cr: 0.20 to 2.0% (weight%, hereinafter the same), Mo:
A color selection mechanism for a cathode ray tube, which is formed of an ultra-low carbon steel sheet containing 0.10 to 3.0%.
i:0.10％以下、Mn:0.10〜0.60％、P:0.10％以下、S:0.1
0％以下、N:100ppm以下、Sol.Al:0.10％以下、その他Fe
及び不可避的不純物でなる特許請求の範囲第１項記載の
色選別機構。2. The composition of the ultra-low carbon steel sheet is C: 0.08% or less, S
i: 0.10% or less, Mn: 0.10 to 0.60%, P: 0.10% or less, S: 0.1
0% or less, N: 100 ppm or less, Sol.Al: 0.10% or less, other Fe
And a color selecting mechanism according to claim 1, which comprises unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63327803A JP2683674B2 (en) | 1988-12-27 | 1988-12-27 | Cathode ray tube color selection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63327803A JP2683674B2 (en) | 1988-12-27 | 1988-12-27 | Cathode ray tube color selection mechanism |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8353645A Division JP2807787B2 (en) | 1996-12-16 | 1996-12-16 | Color selection mechanism for cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02174042A JPH02174042A (en) | 1990-07-05 |
| JP2683674B2 true JP2683674B2 (en) | 1997-12-03 |
Family
ID=18203171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63327803A Expired - Fee Related JP2683674B2 (en) | 1988-12-27 | 1988-12-27 | Cathode ray tube color selection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2683674B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05234503A (en) * | 1991-08-26 | 1993-09-10 | Mitsubishi Electric Corp | Blackening method for stretching type color selection electrode structure body |
| JP2807787B2 (en) * | 1996-12-16 | 1998-10-08 | ソニー株式会社 | Color selection mechanism for cathode ray tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63259054A (en) * | 1987-04-16 | 1988-10-26 | Nippon Mining Co Ltd | Shadow mask |
-
1988
- 1988-12-27 JP JP63327803A patent/JP2683674B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02174042A (en) | 1990-07-05 |
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