JPH05128980A - Color cathode-ray tube - Google Patents
Color cathode-ray tubeInfo
- Publication number
- JPH05128980A JPH05128980A JP29125391A JP29125391A JPH05128980A JP H05128980 A JPH05128980 A JP H05128980A JP 29125391 A JP29125391 A JP 29125391A JP 29125391 A JP29125391 A JP 29125391A JP H05128980 A JPH05128980 A JP H05128980A
- Authority
- JP
- Japan
- Prior art keywords
- shadow mask
- leaf spring
- damper wire
- tension
- ray 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/07—Shadow masks
- H01J2229/0727—Aperture plate
- H01J2229/0738—Mitigating undesirable mechanical effects
- H01J2229/0744—Vibrations
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、外部から衝撃や振動を
受けても、パネル内面に形成された螢光面に対するシャ
ドウマスクのグリッド素体の前記衝撃や振動による相対
位置の変動の振幅が抑制されて、表示画面に色ずれなど
の悪影響が現われにくいようにしたカラー陰極線管に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, even when an impact or a vibration is applied from the outside, changes the relative position of the shadow element of the shadow mask with respect to the fluorescent surface formed on the inner surface of the panel. The present invention relates to a color cathode ray tube which is suppressed so that adverse effects such as color shift are unlikely to appear on a display screen.
【０００２】[0002]
【従来の技術】シャドウマスク方式カラー陰極線管で
は、公知のように、３原色螢光体のドット又はストライ
プを所定の順序で繰返し配列した螢光面をパネルのフェ
ースプレート部の裏面に設け、その電子銃側に電子ビー
ム通過用の開口部を設けたシャドウマスクを螢光面に対
向させて設置し、また３原色それぞれに専用の電子ビー
ムを射出する電子銃を設け、シャドウマスクの特定の開
口部を通過した特定原色用電子ビームは、シャドウマス
ク面に対して各原色によってそれぞれ異なる所定の角度
で交わるため、シャドウマスクを通過したのち螢光面の
特定原色螢光体のドット又はストライプに射突して発光
させるようになっている。2. Description of the Related Art In a shadow mask type color cathode ray tube, as is well known, a fluorescent surface in which dots or stripes of fluorescent materials of three primary colors are repeatedly arranged in a predetermined order is provided on a back surface of a face plate portion of a panel. A shadow mask provided with an opening for passing an electron beam on the electron gun side is installed facing the fluorescent surface, and an electron gun for emitting a dedicated electron beam for each of the three primary colors is provided, and a specific opening of the shadow mask is provided. Since the specific primary color electron beam that has passed through the section intersects the shadow mask surface at a different predetermined angle for each primary color, after passing through the shadow mask, it is projected onto the dots or stripes of the specific primary color phosphor on the fluorescent surface. It is designed to strike and emit light.
【０００３】通常のカラーテレビジョン放送受像機に用
いるカラー陰極線管では、国際的な規格により１フレー
ムを構成する画素数（但し赤、青、緑の螢光体１組より
なる）は３０万程度に規定されているため、従来はシャ
ドウマスク素材として、通常、板厚０．２ｍｍ程度の軟
鋼板や鉄−ニッケル合金が用いられていた。このような
シャドウマスクは板厚が充分あって撓み難いため、カラ
ー陰極線管が外部から衝撃や振動を受けても、シャドウ
マスクの螢光面に対する相対位置が変動するような恐れ
は殆どなく、その周辺を丈夫な額縁状のマスクフレーム
に固着させておけば問題はなかった。しかし、情報処理
システムの表示端末（ＶＤＴ）では次第に精細度の高い
カラー陰極線管が求められるようになってきたし、他方
では所謂ＡＤＴＶ又はＨＤＴＶなどと称する高精細度画
像のカラーテレビジョン放送の実現も近くなってきた。
このような所謂高精細度カラー陰極線管では現行のカラ
ーテレビジョン放送規格で定められた画素数の数倍程度
の画素数が要求され、それに応じてシャドウマスクに設
ける電子ビーム通過用開口部の数も多くしなければなら
ない。In a color cathode ray tube used for a normal color television broadcast receiver, the number of pixels constituting one frame (however, one set of red, blue and green fluorescent bodies is included) is about 300,000 according to international standards. Therefore, as a shadow mask material, a mild steel plate having a plate thickness of about 0.2 mm or an iron-nickel alloy has been conventionally used. Since such a shadow mask has a sufficient plate thickness and is difficult to bend, even if the color cathode ray tube receives an impact or a vibration from the outside, there is almost no fear that the relative position of the shadow mask with respect to the fluorescent surface changes. There was no problem if the periphery was fixed to a tough frame-shaped mask frame. However, a display terminal (VDT) of an information processing system is gradually required to have a color cathode ray tube having a high definition, and on the other hand, a color television broadcast of a high definition image called a so-called ADTV or HDTV is realized. It's getting closer.
In such a so-called high-definition color cathode ray tube, a number of pixels which is about several times the number of pixels defined by the current color television broadcasting standard is required, and the number of electron beam passage openings provided in the shadow mask is accordingly increased. I also have to do a lot.
【０００４】シャドウマスク方式カラー陰極線管の各原
色専用の３本の電子銃（厳密には電子ビーム射出部を指
し、収束用電子レンズなどは３本の電子ビームに対して
大口径のものを共用しても差し支えない）の配列法は、
ごく初期を除いて、管軸を含む水平面内に配列した方式
が主に実用化されている。これは所謂セルフコンバージ
ェンスが期待できるからである。Three electron guns dedicated to each primary color of the shadow mask type color cathode ray tube (strictly refer to an electron beam emitting portion, and a focusing electron lens and the like having a large diameter for three electron beams are commonly used. It doesn't matter)
Except in the very beginning, the method of arranging in a horizontal plane including the tube axis is mainly put into practical use. This is because so-called self-convergence can be expected.
【０００５】このように電子銃の配列法は統一されてい
るのに対して、螢光面やシャドウマスクに関しては方式
が分かれている。螢光面には、３原色螢光体のドットを
所定の順序で繰返し配列したものと、垂直方向に連続し
た３原色螢光体のストライプを所定の順序で繰返し配列
したものとがある。シャドウマスクも螢光面の螢光体が
ドット状かストライプ状かに対応して、電子ビーム通過
用開口部の形状を円形にしたものと、開口部が縦長で、
垂直方向の複数個所に補強用に横方向結合部を設けたも
のや垂直方向グリッド素体を平行させて水平方向に並列
させたものとがある。As described above, the electron guns are arranged in the same manner, but the fluorescent planes and the shadow masks are divided. On the fluorescent surface, there are one in which dots of three primary color phosphors are repeatedly arranged in a predetermined order, and one in which stripes of three primary color phosphors continuous in the vertical direction are repeatedly arranged in a predetermined order. The shadow mask also has a circular shape for the electron beam passage opening, and the opening is vertically long, depending on whether the fluorescent body on the fluorescent surface is dot-shaped or stripe-shaped.
There are those in which lateral connecting portions are provided at a plurality of positions in the vertical direction for reinforcement, and those in which the vertical grid element bodies are arranged in parallel and arranged in parallel in the horizontal direction.
【０００６】既述のようにテレビジョン受像用には比較
的画素数が少ないこともあって、螢光体の垂直方向スト
ライプを並列させた螢光面と縦長で垂直方向の複数個所
に水平方向に隣接開口部で位置を変えて補強用に横方向
結合部を設けた電子ビーム通過用開口部を配列したシャ
ドウマスクとが最も多く用いられている。画像を見た感
じも良く、製作上も容易であるからである。このような
シャドウマスクは素材の板厚が上記のように０．２０ｍ
ｍ程度で自己形状保持性が充分あるから通常その周辺部
を丈夫なマスクフレームに固着させるだけで良く、あま
り問題もなく実用されてきた。As described above, since the number of pixels is relatively small for television reception, the fluorescent surface in which the vertical stripes of the fluorescent body are arranged side by side and the vertical direction at a plurality of vertical positions in the horizontal direction. The most commonly used is a shadow mask in which electron beam passage openings having a lateral coupling portion for reinforcement are arranged at different positions in adjacent openings. This is because the image looks good and is easy to manufacture. Such a shadow mask has a material thickness of 0.20 m as described above.
Since it has sufficient self-shape retention at about m, it is usually sufficient to fix its peripheral portion to a durable mask frame, and it has been practically used without any problems.
【０００７】しかし、高精細度管では、短いピッチで幅
の狭い開口部を作る必要上、シャドウマスク素材の板厚
を薄くすることが望ましい。これはエッチング法で電子
ビーム開口部を所望の寸法の通りに正確に形成させるた
めにも、作業時間を短縮して量産性を向上させるために
も、板厚の薄い素材が好都合なためである。現在は、シ
ャドウマスクの素材として２５μｍ程度のものまで使用
されている。このような薄い材料で作ったシャドウマス
クに自己形状保持性は期待できないから、丈夫なマスク
フレームにシャドウマスク材料に張力をかけて取付けな
ければならなくなる。その際、開口部形状が円形の孔の
シャドウマスクならば水平、垂直いずれの方向にも張力
をかけて差し支えないが、開口部が縦長、特に垂直方向
グリッド素体を平行させて並列させたものの場合には、
水平方向に張力をかけると開口部を変形させてしまう恐
れがあるから、垂直方向にしか張力をかけられない。一
方、垂直方向グリッド素体を並列させたシャドウマスク
を用いると、電子ビームの直径はかなり大きいこともあ
って、ドット型螢光体螢光面と円形孔シャドウマスクを
組合せた場合に表示画面を詳細に見た場合に認められる
ような上下画素間の黒い隙間が見えなくなり、表示が綺
麗に見える。このような利点はあるが、この種のシャド
ウマスクは張力印加可能な方向は垂直方向に限られるか
ら、パネル形状をほぼ平面状とし、これに全く平面状に
展張したシャドウマスクを組合せるか、パネル面を水平
断面は曲線状で垂直断面は直線状の曲面（実用されてい
るのは円筒面）とし、これに同様な曲面形状に張架した
シャドウマスクを組合せて用いることになる。However, in a high-definition tube, it is desirable to reduce the thickness of the shadow mask material because it is necessary to form a narrow opening with a short pitch. This is because a thin material is convenient in order to accurately form the electron beam opening according to a desired dimension by the etching method and to shorten the working time and improve mass productivity. .. Currently, materials up to about 25 μm are used as materials for shadow masks. Since a shadow mask made of such a thin material cannot be expected to retain its own shape, the shadow mask material must be attached to a durable mask frame by applying tension. At that time, if the shadow mask has a circular opening, tension may be applied in either the horizontal or vertical direction, but the opening is vertically long, especially if the vertical grid elements are arranged in parallel. in case of,
Since horizontal tension may deform the opening, tension can only be applied vertically. On the other hand, if a shadow mask in which vertical grid elements are arranged in parallel is used, the diameter of the electron beam may be quite large, so that the display screen is improved when the dot-type fluorescent surface and the circular-hole shadow mask are combined. The black gap between the upper and lower pixels, which can be seen in detail, disappears and the display looks neat. Although there are such advantages, this type of shadow mask can apply tension only in the vertical direction, so make the panel shape almost flat and combine it with a flat shadow mask, or The panel surface has a curved curved surface in the horizontal section and a linear curved surface in the vertical section (the cylindrical surface is in practical use), and a shadow mask stretched in a similar curved shape is used in combination.
【０００８】上記いずれの場合でも、２５μｍ程度の薄
い素材を用いた垂直方向のグリッド素体を並列させたシ
ャドウマスクを、グリッド素体の垂直方向の長さがかな
りある場合に、途中に何の支えもしないでそのまま用い
れば、たとえ長さ方向（垂直方向）に充分な張力を加え
て張られていても、カラー陰極線管が外部から衝撃や振
動を受けた場合に、グリッド素体が暫く継続する振動を
生じ易い。一方、カラー螢光面は、ガラス製で硬いパネ
ルのフェースプレート部の裏面に形成されているから、
カラー陰極線管が外部から受けた衝撃や振動と同様に動
く。そのために、シャドウマスクの開口部と螢光膜の螢
光体ストライプとの相対位置が振動的に変動することに
なり、振動の振幅が大きければ表示画像に色ずれを生ず
る。In any of the above cases, a shadow mask in which vertical grid elements made of a thin material of about 25 μm are juxtaposed is used in the middle when the length of the grid elements in the vertical direction is considerable. If it is used without any support, the grid element body will continue for a while if the color cathode-ray tube is impacted or vibrated from the outside even if it is stretched with sufficient tension in the length direction (vertical direction). Vibration is likely to occur. On the other hand, since the color fluorescent surface is formed on the back surface of the face plate part of the hard panel made of glass,
The color cathode ray tube moves in the same way as an external shock or vibration. As a result, the relative position between the opening of the shadow mask and the phosphor stripe of the fluorescent film fluctuates oscillatingly, and if the amplitude of the vibration is large, a color shift occurs in the displayed image.
【０００９】色ずれは画像を見ている者にとって醜いも
のであるから、上記グリッド素体あるいはシャドウマス
クの暫く継続して生ずる振動を抑制するために、従来か
ら、図３に示すように、グリッド素体に交差し且つ密着
するように、振動エネルギーを短時間内に減衰させるた
めのダンパー線を板ばねを介して張力をかけて取付ける
ことが行なわれていた。図３において、１０は、水平方
向枠辺１０ａ、１０ｂと垂直方向左右腕部１０ｃ、１０
ｄとよりなるマスクフレーム、１１は薄い素材を用いて
垂直方向グリッド素体を平行させて水平方向に並列させ
たシャドウマスク、１２はダンパー線１３に張力を印加
するための板ばねである。ダンパー線には、線径が１０
〜３０μｍ程度（太すぎると表示画面に黒い線となって
現われ表示画像中の横線と混同される恐れがある）の細
くて比較的丈夫なタングステン線が主として用いられ、
張力は２０〜２００ｇになっていた。このようなダンパ
ー線の取付方法に関しても従来から種々の提案がなされ
ており、たとえば、特開昭５３−１３２２５９号公報に
は、ダンパー線に加えられる張力を高温時には低下さ
せ、低温時には張力が回復して強くなるようにする技術
が開示されている。これはダンパー線にタングステン線
を用いた場合、タングステン線の熱膨張係数は一般にグ
リッド素体材料として用いられている軟鋼に比較して小
さく、かつ高温時にグリッド素体の表面とダンパー線の
表面とにそれぞれ摩擦係数の大きい酸化物が生成され、
そのために両者が接触部で固着されたようになってグリ
ッド素体間隔がダンパー線に沿った個所では他部分より
短くなるように変形し、その変形が低温に戻ってもその
まま残留するために生ずる色ずれを防止しようとするも
のである。Since the color misregistration is ugly to the person who is viewing the image, in order to suppress the vibration that occurs continuously for a while in the grid element body or the shadow mask, conventionally, as shown in FIG. A damper wire for attenuating vibration energy within a short period of time has been attached by applying tension through a leaf spring so as to intersect and closely contact the element body. In FIG. 3, reference numeral 10 denotes horizontal frame edges 10a and 10b and vertical left and right arm portions 10c and 10b.
d is a mask frame, 11 is a shadow mask in which vertical grid elements are made parallel by using a thin material and are arranged in parallel in the horizontal direction, and 12 is a leaf spring for applying tension to the damper wire 13. The diameter of the damper wire is 10
Approximately 30 μm (a thick and relatively strong tungsten wire that appears as a black line on the display screen and may be confused with a horizontal line in the displayed image) is mainly used.
The tension was 20 to 200 g. Various proposals have been made for the method of attaching the damper wire. For example, in Japanese Patent Laid-Open No. 53-132259, the tension applied to the damper wire is reduced at high temperature and recovered at low temperature. A technique for increasing the strength by doing so is disclosed. This is because when a tungsten wire is used as the damper wire, the coefficient of thermal expansion of the tungsten wire is smaller than that of mild steel, which is generally used as a grid element material, and the surface of the grid element and the surface of the damper wire are Oxides with a large friction coefficient are generated in
As a result, the two become fixed at the contact area, and the grid element body is deformed so that it becomes shorter than the other parts at the points along the damper line, and the deformation remains as it is even when the temperature returns to low temperature. It is intended to prevent color misregistration.
【００１０】[0010]
【発明が解決しようとする課題】しかし、上記のような
ことはシャドウマスクを比較的半径の短い円筒面状に張
架してダンパー線に非常に強い張力をかけたテレビジョ
ン受像管の場合には生ずるかもしれないが、シャドウマ
スクを平面状または非常に半径の長い円筒面状に張架し
た場合には、ダンパー線とグリッド素体とが交差個所で
固着するようなことは認められなかった。結局、従来か
らのダンパー線の設置方法に関する種々の提案によって
も未だグリッド素体あるいはシャドウマスクの、外部か
らの衝撃、振動に起因する継続的な振動を充分に減衰さ
せることは出来なかった。However, the above is the case of a television picture tube in which a shadow mask is stretched on a cylindrical surface having a relatively short radius and a very strong tension is applied to a damper wire. Although it may occur, when the shadow mask was stretched on a flat surface or a cylindrical surface with a very long radius, it was not observed that the damper wire and the grid element were fixed at the intersection. .. After all, various proposals regarding the conventional installation method of the damper wire have not been able to sufficiently attenuate the continuous vibration caused by the external shock or vibration of the grid element body or the shadow mask.
【００１１】本発明は上記従来からの問題を解決し、垂
直方向グリッド素体を並列させて電子ビーム通過用開口
部を形成させた薄い素材によるシャドウマスクを用いな
がら、外部から衝撃や振動を受けたときに、実用上問題
になるほどの顕著な色ずれが現われないようにした製造
容易なカラー陰極線管を提供することを目的とする。The present invention solves the above-mentioned problems of the prior art and uses a shadow mask made of a thin material in which vertical grid elements are arranged in parallel to form an opening for passing an electron beam. It is an object of the present invention to provide a color cathode ray tube which is easy to manufacture and which does not cause a noticeable color shift that causes a practical problem.
【００１２】[0012]
【課題を解決するための手段】上記目的を達成するため
に本発明においては、垂直方向のグリッド素体を平行さ
せて水平方向に多数並列させたシャドウマスクを、垂直
方向に張力をかけてマスクフレームに取付け保持させた
シャドウマスク構体に、更に各グリッド素体に交差し且
つ密着するように複数のダンパー線を、マスクフレーム
に固着させた板ばねを介して張力をかけて取付け、シャ
ドウマスクの振動を抑制減衰させるようにしたカラー陰
極線管において、上記板ばねを形状記憶合金で製作し、
この板ばねの一端をダンパー線の端部に取付け、ダンパ
ー線のシャドウマスク構体への取付け作業時に、上記板
ばねの形状を、ダンパー線に張力をかけるのに適した予
め記憶させてある特定の形状から、ダンパー線を取付け
易い形状に常温で変形させた状態で、板ばねの他端をマ
スクフレームの所定の位置に所定の姿勢で固着してダン
パー線を取付け、その後、上記板ばねを加熱して予め記
憶させてある上記特定の形状に近付かせ、ダンパー線に
所定の張力が加わるようにした。To achieve the above object, in the present invention, a shadow mask in which a plurality of vertical grid elements are arranged in parallel and arranged in parallel in the horizontal direction is applied with tension in the vertical direction. A plurality of damper wires are attached to the shadow mask structure mounted and held on the frame by tension through a leaf spring fixed to the mask frame so as to intersect and closely adhere to each grid element body. In a color cathode ray tube that suppresses and attenuates vibration, the leaf spring is made of a shape memory alloy,
One end of this leaf spring is attached to the end of the damper wire, and when attaching the damper wire to the shadow mask structure, the shape of the leaf spring is stored in advance in a specific manner suitable for applying tension to the damper wire. From the shape, deform the damper wire to a shape that is easy to attach at room temperature, attach the damper wire by fixing the other end of the leaf spring to a predetermined position of the mask frame in a predetermined posture, and then heat the leaf spring. Then, the damper wire is made to approach the above-mentioned specific shape stored in advance so that a predetermined tension is applied to the damper wire.
【００１３】[0013]
【作用】本発明者は多数の試作を重ねて研究した結果、
垂直方向グリッド素体を水平方向に並列させたシャドウ
マスクの振動を抑制するために、各グリッド素体に密着
するように複数のダンパー線をマスクフレームに固着さ
せた板ばねを介して張力をかけて取付ける作業が、実際
の製造工程では必ずしも所望の如く行なわれておらず、
ダンパー線の取付けによってシャドウマスクの振動を充
分に抑制できなかった試作例の多くについて、ダンパー
線に充分な張力が印加されていなかったことが判明し
た。[Function] The present inventor has conducted a number of trial manufactures, and as a result,
In order to suppress the vibration of the shadow mask in which the vertical grid elements are arranged side by side in the horizontal direction, tension is applied through a leaf spring that is fixed to the mask frame with multiple damper wires so that they are in close contact with each grid element. Installation work is not always performed as desired in the actual manufacturing process,
It was found that in many of the prototypes in which the vibration of the shadow mask could not be sufficiently suppressed by mounting the damper wire, sufficient tension was not applied to the damper wire.
【００１４】上記のことから、ダンパー線の実際の展張
作業を行ない易く、しかも量産した製品のダンパー線の
張力を均一に保持し易い構造を種々検討した結果、ダン
パー線の張力付与のために使用する板ばねを形状記憶合
金で製作することにしたのである。従来のダンパー線を
取付ける作業でも、所定の張力をかけるために、張力を
測定しながら所望の張力値になったのを見届けて素早く
ダンパー線の端部を固定するとか、板ばねに所定の撓み
が認められるように固定するなどの手段をとっていた
が、いずれも取付け作業の途中に一種の測定作業が含ま
れ、これが問題の原因であるように考えられた。これに
対し、本発明により形状記憶合金製の板ばねに予め所定
の形状を記憶させておくことは取付け作業に先立って全
く別工程で治具を用いて正確に行なうことができる。こ
の板ばねの形状を変形させてダンパー線に殆ど張力がか
からず、従ってダンパー線の取付け作業を行ない易い状
態にした上で、板ばねをマスクフレームの所定の位置に
所定の姿勢で取付けることも極めて容易である。最後に
形状記憶合金製の板ばねに予め記憶させてあった形状に
近付かせる（形状復元力により張力をかけさせるのであ
るから形状が完全に元に戻ることはない）作業は例えば
ヘアドライヤのようなもので加熱して簡単に実行でき
る。From the above, as a result of various studies on the structure which facilitates the actual work of spreading the damper wire and moreover makes it possible to uniformly maintain the tension of the damper wire of the mass-produced product, the damper wire is used for applying the tension. It was decided that the leaf springs that would be manufactured would be made from a shape memory alloy. Even in the conventional work of mounting the damper wire, in order to apply the predetermined tension, it is necessary to quickly fix the end of the damper wire by checking that the desired tension value has been reached while measuring the tension, or to bend the leaf spring to the predetermined flexure. However, it was thought that this was the cause of the problem, as they all included a type of measurement work during the installation work. On the other hand, according to the present invention, storing a predetermined shape in the leaf spring made of a shape memory alloy in advance can be accurately performed by using a jig in a completely different process prior to the mounting work. Deform the shape of this leaf spring so that almost no tension is applied to the damper wire, so that the damper wire can be easily attached, and then install the leaf spring in a specified position on the mask frame in a specified posture. Is also very easy. Finally, the leaf spring made of shape memory alloy is made to come close to the shape previously stored (the shape is not completely restored because tension is applied by the shape restoring force). You can easily heat it up with something.
【００１５】[0015]
【実施例】図１は本発明によるシャドウマスク方式カラ
ー陰極線管の概略断面図で、図中、１はネック管、２は
ファンネル、３はパネル、４はバルブ、５はパネルのフ
ェースプレート部、６は螢光面、７はシャドウマスク構
体、８は電子銃、９は電子ビームである。螢光面６は３
原色螢光体のドット又はストライプが順次所定の順序で
繰返し配列された複雑微細な構造を有し、この螢光面は
パネルのフェースプレート部の裏面全体を一様に覆って
形成された特定色螢光体を含む感光性膜に対向配置した
シャドウマスク開口部を透過した光を照射させて所要部
分を固化させパネルのガラス面に固着させた後、不要部
分を除去するフォトリソグラフィ技術により形成され
る。そのためにパネル３は螢光面の各色螢光体のドット
又はストライプが所望の如くすべて形成されるまでは、
ファンネルとは離れていなければならない。パネル３は
画像観察者に面するフェースプレート部５とその周囲で
ほぼ直角に折れ曲がったパネルスカート部よりなり、パ
ネルの少なくともフェースプレート部の裏面全体に螢光
面を上記のようにして形成させたのち、パネルスカート
部の端面とファンネル２の端面とを低融点ガラスで溶着
させてバルブ４を完成させる。電子ビーム９は管軸を通
る水平面上に配列されたそれぞれ各原色に対応する３本
の特定色専用電子銃から射出される。上記のように、そ
れぞれ異なる位置に配列された３本の特定色専用電子銃
から射出された特定色専用の電子ビームは、シャドウマ
スクの特定の電子ビーム通過用開口部を通過する際、シ
ャドウマスクとそれぞれ異なる角度で交差する。したが
って、３本の電子ビームはシャドウマスクの特定の電子
ビーム通過用開口部を一緒に通過しても、開口部を通過
してそこで絞られて細くなった３本の電子ビームは、そ
れぞれ異なる軌道を飛行して、螢光面を形成しているそ
れぞれ異なる特定の色の螢光体のドット又はストライプ
にランディングして発光させる。1 is a schematic sectional view of a shadow mask type color cathode ray tube according to the present invention, in which 1 is a neck tube, 2 is a funnel, 3 is a panel, 4 is a valve, 5 is a face plate portion of the panel, 6 is a fluorescent surface, 7 is a shadow mask structure, 8 is an electron gun, and 9 is an electron beam. Fluorescent surface 6 is 3
It has a complicated fine structure in which dots or stripes of primary color phosphors are sequentially arranged in a predetermined order, and the fluorescent surface is a specific color formed by uniformly covering the entire back surface of the face plate part of the panel. Formed by photolithography technology that removes unnecessary parts after irradiating light passing through a shadow mask opening arranged opposite to a photosensitive film containing a fluorescent substance to solidify the necessary parts and fixing them to the glass surface of the panel. It For that purpose, the panel 3 is manufactured until all dots or stripes of each color phosphor on the fluorescent surface are formed as desired.
Must be separate from the funnel. The panel 3 is composed of a face plate portion 5 facing the image observer and a panel skirt portion bent at a substantially right angle around the face plate portion 5, and the fluorescent surface is formed on at least the entire back surface of the face plate portion of the panel as described above. After that, the end face of the panel skirt portion and the end face of the funnel 2 are welded with a low melting point glass to complete the bulb 4. The electron beam 9 is emitted from three specific color dedicated electron guns arranged on a horizontal plane passing through the tube axis and corresponding to respective primary colors. As described above, the electron beams for a specific color emitted from the three electron guns for a specific color arranged at different positions respectively pass through the specific electron beam passage opening of the shadow mask when passing through the shadow mask. And intersect at different angles. Therefore, even if the three electron beams pass through the specific electron beam passage openings of the shadow mask together, the three electron beams that have passed through the openings and are narrowed and narrowed there are different trajectories. To land on the dots or stripes of the phosphors of different specific colors forming the fluorescent surface to emit light.
【００１６】図２（ａ）、（ｂ）、（ｃ）は本発明に係
る形状記憶合金で製作した板ばねを用いて、ダンパー線
をシャドウマスク構体に取付ける工程を説明する図であ
る。また、本発明は、シャドウマスク構体の板ばねの材
料を除けば従来のカラー陰極線管のシャドウマスク構体
と同様のものを使用しており、シャドウマスク構体とし
て組立終わった状態は、既に説明した図３と同様にな
る。2 (a), 2 (b) and 2 (c) are views for explaining a process of attaching a damper wire to a shadow mask structure using a leaf spring made of the shape memory alloy according to the present invention. Further, the present invention uses the same as the shadow mask structure of the conventional color cathode ray tube except for the material of the leaf spring of the shadow mask structure, and the state after the assembly as the shadow mask structure is already explained. Same as 3.
【００１７】図２（ａ）はダンパー線の両端に予め所定
の形状を記憶させた形状記憶合金製の板ばねを取付けた
状態の平面図、同図（ｂ）は上記板ばねを起こしてマス
クフレームに取付ける前の状態の側面図である。図中、
１２ａは所定の形状を与えられ、記憶させられている形
状記憶合金製の板ばね、１３はダンパー線、１６はダン
パー線の長さを正確に測定してその位置で溶接するため
の溶接板である。本発明の場合は、シャドウマスク構体
の製作に際しては、その部品の製作工程でそれぞれを極
力正確な形状、寸法に製作する。FIG. 2A is a plan view showing a state in which a leaf spring made of a shape memory alloy in which a predetermined shape is stored in advance is attached to both ends of the damper wire, and FIG. 2B is a mask in which the leaf spring is raised. It is a side view of the state before attaching to a frame. In the figure,
12a is a leaf spring made of a shape memory alloy which is given a predetermined shape and is memorized, 13 is a damper wire, 16 is a welding plate for accurately measuring the length of the damper wire and welding at that position. is there. In the case of the present invention, when manufacturing the shadow mask structure, each of them is manufactured to have the most accurate shape and size in the manufacturing process of the parts.
【００１８】板ばね１２ａの材料には、板厚０．１５ｍ
ｍのＴｉ５０％、Ｎｉ５０％の形状記憶合金の板材を用
い、これを７０℃に加熱した状態で図２（ｂ）に示すよ
うな形に曲げて成形する。これで板ばね１２ａはこの形
状を記憶したことになる。ダンパー線には直径２５μｍ
のタングステン線を用い、これに１００ｇの張力をかけ
ることにした。ダンパー線１３の長さや板ばね１２ａの
形状については、予め試作によって所望の長さ、形状を
正確に定めておく。１００ｇの張力は直径２５μｍのタ
ングステン線に対しては２００ｋｇ／ｍｍ2程度の加重
となり充分耐えられ、問題になるほどの延びは生じな
い。The material of the leaf spring 12a is 0.15 m thick.
A plate material made of a shape memory alloy containing 50% of Ti and 50% of Ni of m is bent by bending into a shape as shown in FIG. 2B while being heated to 70 ° C. This means that the leaf spring 12a remembers this shape. The diameter of the damper wire is 25 μm
It was decided to use a tungsten wire of No. 1 and apply a tension of 100 g to this. Regarding the length of the damper wire 13 and the shape of the leaf spring 12a, a desired length and shape are accurately determined in advance by trial manufacture. A tension of 100 g gives a load of about 200 kg / mm 2 to a tungsten wire having a diameter of 25 μm and can withstand it sufficiently, without causing a problematic elongation.
【００１９】次に、常温（５０℃以下）で板ばね１２ａ
に外力を加えて一旦まっすぐに変形させる。あらかじ
め、ダンパー線１３の両端に、それぞれ、このように変
形させた板ばね１２ａの一端を取付けた状態でダンパー
線１３をマスクフレーム１０の垂直方向左右腕部１０
ｃ、１０ｄ（図３参照）に図２（ｃ）に示すように板ば
ね１２ａの他端を容易に溶接して固着できるようにダン
パー線１３の長さが定めてあるから、ダンパー線１３を
シャドウマスク構体７に取付ける作業は容易である。ま
た、マスクフレームの垂直方向腕部１０ｃ、１０ｄへの
溶接作業は簡単に短時間で済むから形状記憶合金製の板
ばね１２ａは溶接個所の極めて近くが温度上昇するだけ
で、全体として温度は７８℃を越えることはない。板ば
ね１２ａの端部をマスクフレームに溶接して固着させた
のち、図示しない、ヘアドライヤ類似の熱風送風装置で
板ばね１２ａを加熱して７８℃以上にすると形状記憶合
金は逆変態を開始して当初の曲げた状態に戻ろうとす
る。そのためにダンパー線１３には殆ど正確に１００ｇ
の張力が印加される。なお、本実施例に使用したシャド
ウマスク構体７では、マスクフレーム１０の水平方向枠
辺１０ａ、１０ｂは図示のように曲率半径４０００ｍｍ
で円形に曲げてありシャドウマスク１１が垂直方向の軸
を有する円筒面を形成するようにしてある。このように
すれば、シャドウマスク１１の全面にわたってダンパー
線１３は、グリッド素体に交差する個所で、グリッド素
体に確実に密着して圧力をかけ、カラー陰極線管が外部
から衝撃または振動を受けたとき、シャドウマスク１１
が振動してもダンパー線との交差個所で両者が摺動すれ
ば摩擦により振動のエネルギーが消耗されて振動は弱め
られる。その結果、カラー陰極線管が外部から衝撃や振
動を受けても、シャドウマスクの振動の振幅は、色ずれ
を発生させるしきい値以下に抑制され、表示画面に色ず
れは現われない。Next, the leaf spring 12a is kept at room temperature (50 ° C. or lower).
Apply an external force to and deform it straight. The damper wire 13 is attached to the both ends of the damper wire 13 in advance, and the damper wire 13 is attached to the vertical left and right arm portions 10 of the mask frame 10 in a state of being attached.
2c, the length of the damper wire 13 is set so that the other end of the leaf spring 12a can be easily welded and fixed to the c and 10d (see FIG. 3). The work of attaching to the shadow mask structure 7 is easy. Further, since the welding work to the vertical arm portions 10c, 10d of the mask frame can be simply performed in a short time, the temperature of the leaf spring 12a made of the shape memory alloy only rises very close to the welding point, and the temperature as a whole is 78. It does not exceed ℃. After the end portion of the leaf spring 12a is welded and fixed to the mask frame, when the leaf spring 12a is heated by a hot air blower similar to a hair dryer (not shown) to a temperature of 78 ° C or higher, the shape memory alloy starts reverse transformation. I try to return to the original bent state. Therefore, the damper wire 13 is almost exactly 100g.
Is applied. In the shadow mask structure 7 used in this embodiment, the horizontal frame sides 10a and 10b of the mask frame 10 have a radius of curvature of 4000 mm as shown in the figure.
And the shadow mask 11 is formed into a cylindrical surface having a vertical axis. By doing so, the damper wire 13 is surely brought into close contact with the grid element body and pressure is applied to the color cathode ray tube over the entire surface of the shadow mask 11 at a position intersecting the grid element body, so that the color cathode ray tube receives an impact or a vibration from the outside. When the shadow mask 11
Even if vibrates, if both slide at the intersection with the damper wire, the vibration energy is consumed by friction and the vibration is weakened. As a result, even if the color cathode ray tube receives an impact or a vibration from the outside, the amplitude of the vibration of the shadow mask is suppressed below the threshold value that causes the color shift, and the color shift does not appear on the display screen.
【００２０】[0020]
【発明の効果】以上説明したように本発明によれば、カ
ラー陰極線管が外部から衝撃や振動をうけたときでも、
薄く長い垂直方向グリッド素体を水平方向に並列させた
シャドウマスクに生ずる振動の振幅はダンパー線との相
互作用によって確実に抑制され、表示画像に色ずれが生
じないようになる。As described above, according to the present invention, even when the color cathode ray tube receives an impact or vibration from the outside,
The amplitude of the vibration generated in the shadow mask in which the thin and long vertical grid elements are arranged in parallel in the horizontal direction is surely suppressed by the interaction with the damper line, and the color shift does not occur in the display image.
【図１】本発明によるシャドウマスク方式カラー陰極線
管の概略断面図である。FIG. 1 is a schematic sectional view of a shadow mask type color cathode ray tube according to the present invention.
【図２】本発明に係る形状記憶合金で製作した板ばねを
用いて、ダンパー線をシャドウマスク構体に取付ける工
程を説明する図である。FIG. 2 is a diagram illustrating a step of attaching a damper wire to a shadow mask structure using a leaf spring made of a shape memory alloy according to the present invention.
【図３】薄く長い垂直方向グリッド素体を水平方向に並
列させたシャドウマスクにダンパー線を付加して設置し
た状態を示す斜視図である。FIG. 3 is a perspective view showing a state in which a damper wire is added to a shadow mask in which thin and long vertical grid elements are juxtaposed in the horizontal direction and installed.
１…ネック管、 ２…ファンネル、 ３…パネル、 ４
…バルブ、 ５…パネルのフェースプレート部、 ６…
螢光面、 ７…シャドウマスク構体、 ８…電子銃、
９…電子ビーム、 １０…マスクフレーム、 １０ａ、
１０ｂ…水平方向枠辺、 １０ｃ、１０ｄ…垂直方向腕
部、 １１…シャドウマスク、 １２ａ…本発明に係る
形状記憶合金製の板ばね、 １３…ダンパー線。1 ... Neck tube, 2 ... Funnel, 3 ... Panel, 4
… Valve, 5… faceplate part of panel, 6…
Fluorescent surface, 7 ... Shadow mask structure, 8 ... Electron gun,
9 ... Electron beam, 10 ... Mask frame, 10a,
Reference numeral 10b ... Horizontal frame edge, 10c, 10d ... Vertical arm portion, 11 ... Shadow mask, 12a ... Leaf spring made of shape memory alloy according to the present invention, 13 ... Damper wire.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田辺 英夫 千葉県茂原市早野3300番地 株式会社日立 製作所茂原工場内 (72)発明者 篠田 正樹 千葉県茂原市早野3300番地 株式会社日立 製作所茂原工場内 (72)発明者 木島 勇一 千葉県茂原市早野3300番地 株式会社日立 製作所茂原工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Tanabe 3300, Hayano, Mobara-shi, Chiba, Hitachi, Ltd. Mobara factory (72) Inventor Masaki Shinoda, 3300, Hayano, Mobara, Chiba, Hitachi, Ltd. 72) Inventor Yuichi Kijima 3300 Hayano, Mobara-shi, Chiba Hitachi Ltd. Mobara factory
Claims (1)
方向に多数並列させたシャドウマスクを、垂直方向に張
力をかけてマスクフレームに取付け保持させたシャドウ
マスク構体に、更に、各グリッド素体に交差し且つ密着
するように複数のダンパー線をマスクフレームに固着さ
せた板ばねを介して張力をかけて取付けるようにしたカ
ラー陰極線管において、上記板ばねを形状記憶合金で製
作し、この板ばねの一端をダンパー線の端部に取付け、
ダンパー線のシャドウマスク構体への取付け時に、上記
板ばねの形状を、予め記憶させてあるダンパー線に張力
をかけるのに適した特定の形状から、ダンパー線を取付
け易い形状に常温で変形させた状態で、板ばねの他端を
マスクフレームの所定の位置に所定の姿勢で固着してダ
ンパー線を取付け、その後、上記板ばねを加熱して予め
記憶させてある上記特定の形状に近付かせ、ダンパー線
に所定の張力が加わるようにしたことを特徴とするカラ
ー陰極線管。1. A shadow mask structure in which a large number of shadow masks in which vertical grid elements are arranged in parallel and arranged in parallel in the horizontal direction are attached to and held in a mask frame by applying tension in the vertical direction, and further, each grid element is further provided. In a color cathode ray tube in which a plurality of damper wires are attached by tension via a leaf spring fixed to a mask frame so as to intersect and closely contact the body, the leaf spring is made of a shape memory alloy. Attach one end of the leaf spring to the end of the damper wire,
When attaching the damper wire to the shadow mask structure, the shape of the leaf spring was changed from a specific shape suitable for applying tension to the damper wire, which was stored in advance, to a shape at which the damper wire could be easily attached at room temperature. In this state, the other end of the leaf spring is fixed to a predetermined position of the mask frame in a predetermined posture and a damper wire is attached, and then the leaf spring is heated to bring it closer to the specific shape stored in advance. A color cathode ray tube characterized in that a predetermined tension is applied to a damper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29125391A JP3150385B2 (en) | 1991-11-07 | 1991-11-07 | Color cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29125391A JP3150385B2 (en) | 1991-11-07 | 1991-11-07 | Color cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05128980A true JPH05128980A (en) | 1993-05-25 |
| JP3150385B2 JP3150385B2 (en) | 2001-03-26 |
Family
ID=17766471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29125391A Expired - Fee Related JP3150385B2 (en) | 1991-11-07 | 1991-11-07 | Color cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3150385B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6566799B1 (en) * | 2001-11-15 | 2003-05-20 | Thomson Licensing, S.A. | Cathode ray tubes having damper wire support springs |
| KR100427620B1 (en) * | 1997-05-31 | 2004-07-16 | 오리온전기 주식회사 | Vibration prevention apparatus for shadow mask of color cathode ray tube, including vibration prevention wire including vertical vibration prevention wires and horizontal vibration prevention wires |
| US6879093B2 (en) * | 2000-12-22 | 2005-04-12 | Thomson Licensing S.A. | Damper wire spring for a cathode ray tube |
| JP2006150495A (en) * | 2004-11-29 | 2006-06-15 | Konica Minolta Holdings Inc | Manufacturing unit and manufacturing method of positional control device |
| CN100466150C (en) * | 2001-02-14 | 2009-03-04 | 汤姆森许可公司 | Cathod ray tube with microphone effect damping clamp as tension shadow mask |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7058374B2 (en) | 2019-04-01 | 2022-04-21 | 旭化成株式会社 | Electrolytic cell and its control method and program |
-
1991
- 1991-11-07 JP JP29125391A patent/JP3150385B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100427620B1 (en) * | 1997-05-31 | 2004-07-16 | 오리온전기 주식회사 | Vibration prevention apparatus for shadow mask of color cathode ray tube, including vibration prevention wire including vertical vibration prevention wires and horizontal vibration prevention wires |
| US6879093B2 (en) * | 2000-12-22 | 2005-04-12 | Thomson Licensing S.A. | Damper wire spring for a cathode ray tube |
| CN100466150C (en) * | 2001-02-14 | 2009-03-04 | 汤姆森许可公司 | Cathod ray tube with microphone effect damping clamp as tension shadow mask |
| US6566799B1 (en) * | 2001-11-15 | 2003-05-20 | Thomson Licensing, S.A. | Cathode ray tubes having damper wire support springs |
| JP2006150495A (en) * | 2004-11-29 | 2006-06-15 | Konica Minolta Holdings Inc | Manufacturing unit and manufacturing method of positional control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3150385B2 (en) | 2001-03-26 |
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