JPH09245685A - Color picture tube - Google Patents
Color picture tubeInfo
- Publication number
- JPH09245685A JPH09245685A JP4903096A JP4903096A JPH09245685A JP H09245685 A JPH09245685 A JP H09245685A JP 4903096 A JP4903096 A JP 4903096A JP 4903096 A JP4903096 A JP 4903096A JP H09245685 A JPH09245685 A JP H09245685A
- Authority
- JP
- Japan
- Prior art keywords
- panel
- effective area
- curvature
- axis direction
- color picture
- 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
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、カラー受像管に
係り、特にパネルの有効領域の平坦度の向上と真空外囲
器の大気圧強度の向上とを両立させることができるカラ
ー受像管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color picture tube, and more particularly to a color picture tube capable of improving both the flatness of an effective area of a panel and the atmospheric pressure strength of a vacuum envelope.
【０００２】[0002]
【従来の技術】一般にカラー受像管は、ガラス製パネル
およびガラス製漏斗状のファンネルからなる真空外囲器
を有し、そのファンネルのネック内に配設された電子銃
から放出される３電子ビームを、ファンネルの外側に装
着された偏向装置の発生する磁界により偏向し、シャド
ウマスクを介して、上記パネルの有効領域内面に形成さ
れた３色蛍光体層からなる蛍光体スクリーンを水平、垂
直走査することにより、カラー画像を表示する構造に形
成されている。2. Description of the Related Art Generally, a color picture tube has a vacuum envelope consisting of a glass panel and a funnel-shaped funnel made of glass, and a three electron beam emitted from an electron gun disposed in the neck of the funnel. Is deflected by a magnetic field generated by a deflection device mounted on the outside of the funnel, and a phosphor screen made of a three-color phosphor layer formed on the inner surface of the effective area of the panel is horizontally and vertically scanned through a shadow mask. By doing so, a structure for displaying a color image is formed.
【０００３】このようなカラー受像管のパネルは、一般
に実質的に矩形状の有効領域の周辺部に側壁が設けら
れ、真空外囲器に加わる大気圧荷重に耐えられる強度を
得るべく、有効領域の中央部の肉厚が薄く、周辺部の肉
厚が厚くなるように、内外面が異なる曲面に形成されて
いる。Such a color cathode ray tube panel is provided with a side wall at the periphery of a substantially rectangular effective area, and the effective area is obtained in order to obtain a strength capable of withstanding an atmospheric pressure load applied to the vacuum envelope. The inner and outer surfaces are formed to have different curved surfaces so that the central portion has a small thickness and the peripheral portion has a large thickness.
【０００４】その有効領域の外面形状は、概してパネル
のファンネルとのシール面から高さが、中央部で最も高
く、周辺部ほど低くなる曲面からなり、具体的には、球
面状曲面、短軸方向の曲率半径をほぼ無限大とし、長軸
方向に曲率をもつ円筒状曲面、高次の多項式で表示され
る曲面からなるものなどがある。The outer surface shape of the effective region is generally a curved surface whose height from the sealing surface with the funnel of the panel is highest in the central portion and lower in the peripheral portion. Specifically, it is a spherical curved surface or a minor axis. There is a cylindrical curved surface having a curvature in the major axis direction and a curved surface displayed by a high-order polynomial, etc.
【０００５】このパネルの有効領域の外面形状について
は、近年、視認性向上のため、平坦化が進められてい
る。この有効領域の平坦化は、上記各パネルの有効領域
外面の曲面形状によって異なるが、一般に平坦度を表す
手段として、パネルの中央の高さと対角部の高さとの差
（対角部の落込み量）によって決まる対角部平均曲率半
径があり、この対角部平均曲率半径によって表される平
坦度が同じであれば、有効領域外面の曲面形状に関係な
く、上記対角部の落込み量は同一となり、その曲面形状
によって多少の差はあるが、有効領域のフラット感は、
ほぼ同等となる。しかしパネルの平坦度が増すにつれ
て、ガラス製真空外囲器の大気圧強度が低下するため、
この有効領域外面の平坦度は、大型管の場合、最大でも
２．０Ｒ程度となっている。The outer surface shape of the effective area of this panel has been flattened in recent years in order to improve the visibility. The flattening of the effective area depends on the curved surface shape of the outer surface of the effective area of each panel. Generally, as a means of expressing the flatness, the difference between the height of the center of the panel and the height of the diagonal part (diagonal drop) is used. Depth of the above-mentioned diagonal portion regardless of the curved surface shape of the outer surface of the effective area if there is an average radius of curvature of the diagonal portion that is determined by The amount is the same, and there is some difference depending on the curved surface shape, but the flatness of the effective area is
It is almost the same. However, as the flatness of the panel increases, the atmospheric pressure strength of the glass vacuum envelope decreases,
The flatness of the outer surface of the effective region is about 2.0R at the maximum in the case of a large pipe.
【０００６】一方、パネルの有効領域の内面形状につい
ても種々の形状がある。しかしこの有効領域の内面形状
については、ガラス製真空外囲器の大気圧強度上、有効
領域の中央部の肉厚が最も薄く、周辺部になるにしたが
って厚くなるように、有効領域外面と同種の曲面とする
場合が多い。On the other hand, there are various shapes for the inner surface shape of the effective area of the panel. However, regarding the shape of the inner surface of this effective area, due to the atmospheric pressure strength of the vacuum envelope made of glass, the thickness of the central portion of the effective area is the thinnest, and it becomes thicker toward the peripheral portion. It is often a curved surface.
【０００７】ところで、近年、ガラス製真空外囲器の大
気圧強度は、パネルの設計精度の向上および補強バンド
の性能向上などにより向上し、パネルが平坦化しても、
所定の強度に保たれるようになっている。しかし上記の
ようにパネルの内外面が同種の曲面で構成する場合、現
在以上にパネルの有効領域を平坦化するためには、ガラ
ス肉厚の大幅な増加、あるいはパネルの有効領域外面に
補強フィルムを貼着するなどの補強が必要となり、大幅
なコストアップをまねくことになる。By the way, in recent years, the atmospheric pressure strength of the vacuum envelope made of glass has been improved by improving the design accuracy of the panel and the performance of the reinforcing band, and even if the panel is flattened,
It is designed to be kept at a predetermined strength. However, as described above, when the inner and outer surfaces of the panel are composed of the same kind of curved surface, in order to further flatten the effective area of the panel, a significant increase in glass thickness or a reinforcing film on the outer surface of the effective area of the panel is required. Reinforcement such as sticking is required, which leads to a significant increase in cost.
【０００８】このパネルの平坦化については、既にその
有効領域外面をほぼ平面としたカラー受像管がある。こ
のカラー受像管の内面形状は、既知のパネルと同様に曲
面の組合わせで構成されており、真空外囲器の大気圧強
度を確保するために、有効領域の肉厚を厚くしたり、あ
るいはパネルの有効領域外面に補強フィルムを貼着する
などの手段で補強されている。Regarding flattening of this panel, there is already a color picture tube whose outer surface of the effective area is substantially flat. The inner surface shape of this color picture tube is composed of a combination of curved surfaces like the known panel, and in order to secure the atmospheric pressure strength of the vacuum envelope, the wall thickness of the effective area is increased, or It is reinforced by means such as attaching a reinforcing film to the outer surface of the effective area of the panel.
【０００９】[0009]
【発明が解決しようとする課題】上記のように、カラー
受像管のパネルは、一般に実質的に矩形状の有効領域の
周辺部に側壁が設けられ、真空外囲器に加わる大気圧荷
重に耐えられる強度を得るべく、有効領域の中央部の肉
厚が薄く、周辺部の肉厚が厚くなるように、内外面が異
なる曲面に形成されている。このようなカラー受像管の
パネルに対して、近年、視認性向上のため、パネルの有
効領域の平坦化が進められている。しかしパネルの有効
領域を平坦化すると、その平坦度が向上するにつれて、
ガラス製真空外囲器の大気圧強度が低下し、現在以上に
平坦化するためには、ガラス肉厚の大幅な増加や、パネ
ルの有効領域外面に補強フィルムを貼着するなどの補強
が必要となり、大幅なコストアップをまねくという問題
がある。As described above, the panel of the color picture tube is provided with the side wall at the peripheral portion of the generally rectangular effective area so as to withstand the atmospheric pressure load applied to the vacuum envelope. In order to obtain sufficient strength, the inner and outer surfaces are formed into different curved surfaces so that the central portion of the effective area is thin and the peripheral portion is thick. In recent years, in order to improve the visibility of such a panel of a color picture tube, flattening of the effective area of the panel has been promoted. However, flattening the effective area of the panel, as its flatness improves,
In order to reduce the atmospheric pressure strength of the glass vacuum envelope and make it flatter than it is now, it is necessary to significantly increase the glass wall thickness and reinforce it by attaching a reinforcing film to the outer surface of the effective area of the panel. Therefore, there is a problem in that the cost is significantly increased.
【００１０】この発明は、上記問題点に鑑みてなされた
ものであり、大幅なコストアップを招くことなく簡単に
パネルの有効領域外面の平坦度を向上させて、視認性を
向上させることができるカラー受像管を構成することを
目的とする。The present invention has been made in view of the above problems, and it is possible to easily improve the flatness of the outer surface of the effective area of the panel and improve the visibility without significantly increasing the cost. The purpose is to construct a color picture tube.
【００１１】[0011]
【課題を解決するための手段】ファンネルとともに真空
外囲器を構成するパネルの有効領域が実質的に矩形状を
なし、この有効領域の内面に蛍光体スクリーンが形成さ
れてなるカラー受像管において、パネルの有効領域の外
面をほぼ平面とし、この有効領域の内面を、長軸方向の
曲率半径をほぼ無限大とし、短軸方向をほぼ一定曲率半
径の曲面とする円筒状曲面に形成した。In a color picture tube in which an effective area of a panel forming a vacuum envelope together with a funnel has a substantially rectangular shape, and a phosphor screen is formed on an inner surface of the effective area, The outer surface of the effective area of the panel was made substantially flat, and the inner surface of this effective area was formed into a cylindrical curved surface having a substantially infinite radius of curvature in the major axis direction and a substantially constant radius of curvature in the minor axis direction.
【００１２】また、上記カラー受像管において、パネル
の有効領域の外面を、長軸方向の曲率半径をほぼ無限大
とし、短軸方向に曲率をもつ曲面とし、この有効領域の
内面を、長軸方向の曲率半径をほぼ無限大とし、短軸方
向をほぼ一定曲率半径の曲面とする円筒状曲面に形成し
た。In the above color picture tube, the outer surface of the effective area of the panel is a curved surface having a curvature radius in the minor axis direction and a curvature radius in the minor axis direction, and the inner surface of the effective area is defined as the major axis. The radius of curvature in the direction was set to be almost infinite, and the short-axis direction was formed into a cylindrical curved surface having a substantially constant radius of curvature.
【００１３】また、上記各カラー受像管において、パネ
ルの有効領域の内面を、長軸方向の曲率半径をほぼ無限
大とし、短軸方向を高次の多項式で表される曲面に形成
した。In each of the color picture tubes, the inner surface of the effective area of the panel is formed to have a curvature radius in the major axis direction of substantially infinity and a minor axis in the form of a curved surface expressed by a high-order polynomial.
【００１４】さらに、パネルを、有効領域の外面をほぼ
平面とし、この有効領域の内面を、長軸方向に曲率をも
ち、短軸方向が短軸上と短辺近傍とで異なる曲率の曲面
に形成した。Further, in the panel, the outer surface of the effective area is made substantially flat, and the inner surface of the effective area is a curved surface having a curvature in the major axis direction and different curvatures in the minor axis direction on the minor axis and near the minor side. Formed.
【００１５】さらにまた、パネルの有効領域の長軸方向
と短軸方向との寸法比を１６：９とした。Furthermore, the dimensional ratio of the major axis direction and the minor axis direction of the effective area of the panel is set to 16: 9.
【００１６】[0016]
【発明の実施の形態】以下、図面を参照してこの発明の
実施の形態について説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１７】図１にその一形態であるカラー受像管を示
す。このカラー受像管は、後述する実質的に矩形状の有
効領域１の周辺部に側壁２が設けられたガラス製パネル
３と、このパネル３の側壁２端部に接合されたガラス製
漏斗状のファンネル４とからなるガラス製外囲器を有
し、そのパネル３の有効領域１の内面に、青、緑、赤に
発光する３色蛍光体層からなる蛍光体スクリーン５が形
成され、この蛍光体スクリーン５に対向して、その内側
にシャドウマスク６が配置されている。一方、ファンネ
ル４のネック７内に３電子ビーム８を放出する電子銃９
が配設されている。そして、この電子銃９から放出され
る３電子ビーム８をファンネル４の外側に装着された偏
向装置１０の発生する磁界により偏向し、シャドウマス
ク６を介して上記蛍光体スクリーン５を水平、垂直走査
することにより、カラー画像を表示する構造に形成され
ている。FIG. 1 shows a color picture tube which is one of the forms. This color picture tube has a glass panel 3 in which a side wall 2 is provided in the peripheral portion of a substantially rectangular effective area 1 described later, and a glass funnel shape joined to an end of the side wall 2 of the panel 3. There is a glass envelope composed of a funnel 4 and a phosphor screen 5 composed of a three-color phosphor layer that emits blue, green and red is formed on the inner surface of the effective area 1 of the panel 3, A shadow mask 6 is arranged inside the body screen 5 so as to face the body screen 5. On the other hand, an electron gun 9 that emits three electron beams 8 into the neck 7 of the funnel 4.
Are arranged. Then, the three electron beams 8 emitted from the electron gun 9 are deflected by the magnetic field generated by the deflecting device 10 mounted outside the funnel 4, and the phosphor screen 5 is horizontally and vertically scanned through the shadow mask 6. By doing so, a structure for displaying a color image is formed.
【００１８】上記パネル３は、図２（ａ）に示すよう
に、有効領域１の外面１２が長軸方向（Ｘ−Ｘ軸方向）
および短軸方向（Ｙ−Ｙ軸方向）の曲率半径がともにほ
ぼ無限大であるほぼ平面に形成されている。このほぼ平
面からなる外面１２に対して、内面１３は、図２（ａ）
のＸ−Ｘ軸断面を同（ｃ）に示したように、長軸方向の
曲率半径をほぼ無限大とし、図２（ａ）のＹ−Ｙ軸断面
を同（ｂ）に示したように、短軸方向に曲率をもつ円筒
状曲面に形成されている。この形状を基本として、有効
領域１の外面１２を短軸方向にわずかに曲率をもつ曲面
にすること、および有効領域１の内面１３を長軸方向に
わずかに曲率をもつ曲面とすることは任意である。In the panel 3, as shown in FIG. 2A, the outer surface 12 of the effective area 1 is in the long axis direction (XX axis direction).
And the radius of curvature in the minor axis direction (Y-Y axis direction) are both substantially infinite. The inner surface 13 is shown in FIG.
2C, the radius of curvature in the major axis direction is made almost infinite, and the YY axis cross section of FIG. 2A is as shown in FIG. 2B. , A cylindrical curved surface having a curvature in the minor axis direction. Based on this shape, it is optional to make the outer surface 12 of the effective area 1 a curved surface having a slight curvature in the short axis direction and the inner surface 13 of the effective area 1 a curved surface having a slight curvature in the long axis direction. Is.
【００１９】上記ように有効領域１の外面１２がほぼ平
面をなし、内面１３が曲面からなるパネル３は、その内
面１３の曲面形状によって有効領域１周辺部の厚さが決
り、有効領域１のＸ−Ｘ軸方向長さがＹ−Ｙ軸方向長さ
よりも長い、横＞縦のカラー受像管では、パネル３内面
の対角部の落込み量が同一であり、その対角部での厚さ
が同じであれば、その内面１３が平均曲率の最も大きい
曲面となる。As described above, in the panel 3 in which the outer surface 12 of the effective area 1 is substantially flat and the inner surface 13 is a curved surface, the thickness of the peripheral portion of the effective area 1 is determined by the curved shape of the inner surface 13 of the effective area 1. In a horizontal> vertical color picture tube in which the length in the XX axis direction is longer than the length in the YY axis, the amount of depression at the diagonal portion of the inner surface of panel 3 is the same, and the thickness at the diagonal portion is the same. If the values are the same, the inner surface 13 becomes the curved surface having the largest average curvature.
【００２０】ここで、平均曲率とは、外面上の任意点に
おけるあらゆる方向の曲率半径のうち、最大の曲率半径
をＲmax.、最小の曲率半径をＲmim.とした場合、Here, the average curvature means the maximum radius of curvature Rmax. And the minimum radius of curvature Rmim.
【数１】Ｋ＝１／Ｒmax.＋１／Ｒmim. で定義される値である。真空外囲器の大気圧強度は、パ
ネルの外面形状および内面形状により決まるが、上記の
ように有効領域１の外面がほぼ平面であるパネル３で
は、内面の平均曲率が真空外囲器の大気圧強度を決定す
る重要な要因の一つとなる。また数２で表される値も、
真空外囲器の大気圧強度を決定する一つの指標とするこ
とができる。## EQU1 ## A value defined by K = 1 / Rmax. + 1 / Rmim. The atmospheric pressure strength of the vacuum envelope is determined by the outer surface shape and the inner surface shape of the panel. As described above, in the panel 3 in which the outer surface of the effective area 1 is substantially flat, the average curvature of the inner surface is larger than that of the vacuum envelope. It is one of the important factors that determine the pressure intensity. Also, the value expressed by the equation 2 is
It can be used as one index for determining the atmospheric pressure strength of the vacuum envelope.
【数２】Ｋ＝１／Ｒ2 max ＋１／Ｒ2 mim(2) K = 1 / R 2 max + 1 / R 2 mim
【００２１】上記パネル３は、これら数１、数２の値を
ともに、あらゆる内面形状に対して最大にすることがで
き、パネルの強度を高めることができる。したがってパ
ネルの外面１２をほぼ平面として平坦度を向上させて
も、現在一般に使用されている外面が平坦化されたパネ
ルとくらべて、パネルの厚さを厚くするなどの補強を大
幅に軽減でき、またパネルの有効領域に補強フィルムを
貼着して補強するなどをおこなわなくても、パネルの平
坦化が可能となり、その平坦化により、高い大気圧強度
をもち、かつ視認性の向上したカラー受像管を構成する
ことができる。The panel 3 can maximize the values of the equations 1 and 2 for all inner surface shapes, and can enhance the strength of the panel. Therefore, even if the outer surface 12 of the panel is made substantially flat to improve the flatness, it is possible to significantly reduce the reinforcement such as increasing the thickness of the panel as compared with a panel having a flat outer surface which is generally used at present. Also, the panel can be flattened without attaching a reinforcing film to the effective area of the panel to reinforce it, and the flattened color image has high atmospheric pressure strength and improved visibility. The tube can be constructed.
【００２２】以下、若干の実施例について説明する。Some embodiments will be described below.
【００２３】[0023]
【実施例１】実施例１として、最近のカラー受像管の主
流である横縦の比が１６：９、対角寸法が６６cmのカラ
ー受像管に適用した場合について説明する。First Embodiment As a first embodiment, description will be made of a case where the present invention is applied to a color picture tube having a horizontal-to-vertical ratio of 16: 9 and a diagonal dimension of 66 cm, which is a mainstream of recent color picture tubes.
【００２４】この実施例１のパネルは、有効領域の外面
をほぼ完全な平面とし、図３に示すように、有効領域１
の内面１３を、長軸方向の曲率半径を無限大とし、短軸
方向を単一曲率半径とした円筒状曲面としたものであ
り、その断面形状は、図２に示したパネル３と同様にな
っている。すなわち、短軸方向には、図２（ｂ）に示し
たように、有効領域１の外面１２の曲率半径は無限大で
あり、内面１３のみが単一曲率半径の曲面からなり、短
軸端でパネルの厚さが最も厚くなっている。この短軸方
向の断面形状は、図２（ａ）に短辺部での短軸に平行な
Ｄ−Ｄ線断面で示したように、短軸上以外の位置でも同
じである。一方、長軸方向には、図２（ｃ）に示したよ
うに、有効領域１の内外面１２，１３の曲率半径はとも
に無限大であり、パネルの厚さはほぼ一定となってい
る。In the panel of the first embodiment, the outer surface of the effective area is a substantially perfect plane, and as shown in FIG.
Of the inner surface 13 is a cylindrical curved surface having an infinite major radius of curvature in the major axis direction and a single minor radius of curvature in the minor axis direction, and its cross-sectional shape is similar to that of the panel 3 shown in FIG. Has become. That is, in the minor axis direction, as shown in FIG. 2B, the radius of curvature of the outer surface 12 of the effective region 1 is infinite, and only the inner surface 13 is a curved surface with a single radius of curvature. The panel thickness is the thickest. The cross-sectional shape in the direction of the short axis is the same at positions other than on the short axis, as shown in the cross section along the line D-D parallel to the short axis at the short side in FIG. On the other hand, in the major axis direction, as shown in FIG. 2C, the radii of curvature of the inner and outer surfaces 12, 13 of the effective area 1 are both infinite, and the thickness of the panel is substantially constant.
【００２５】このようなパネル３の有効領域１の内面１
３の曲率半径、平均曲率などの特性を、有効領域の外面
をほぼ完全な平面とし、図４（ａ）に示すように、内面
１３を球面状曲面としたパネル３a （比較例１）、およ
び同（ｂ）に示すように、内面１３の短軸方向の曲率半
径を無限大とし、長軸方向に曲率をもつ円筒状曲面とし
たパネル３b （比較例２）と比較して表１に示す。これ
ら実施例１および比較例１、２は、いずれもパネルの中
央と対角部との厚さの差を７mmとしたものであり（この
場合、パネル内面の対角部での落込み量となる）、実施
例１と比較例１、２とは内面形状が異なるだけである。The inner surface 1 of the effective area 1 of such a panel 3
As for the characteristics such as the radius of curvature and the average curvature of No. 3, the outer surface of the effective area is a substantially perfect plane, and the inner surface 13 is a spherical curved surface as shown in FIG. 4A (Comparative Example 1), and As shown in (b), the radius of curvature of the inner surface 13 in the minor axis direction is infinite and the panel 3b (comparative example 2) having a cylindrical curved surface with a curvature in the major axis direction is shown in Table 1. . In each of these Example 1 and Comparative Examples 1 and 2, the thickness difference between the center of the panel and the diagonal portion was set to 7 mm (in this case, the amount of depression at the diagonal portion of the inner surface of the panel was However, Example 1 and Comparative Examples 1 and 2 differ only in the inner surface shape.
【００２６】[0026]
【表１】 [Table 1]
【００２７】これら実施例１および比較例１、２の比較
からわかるように、パネル内面の対角部での落込み量が
同じである比較例１、２にくらべて、平均曲率が大幅に
大きく、曲率２乗和も大きくなっている。これは、この
実施例１のパネルのように横縦の比が１６：９と、横方
向寸法と縦方向寸法の差が大きい場合に顕著となる。前
述したように、パネルおよびファンネルからなる真空外
囲器の大気圧強度は、このパネルの平均曲率および曲率
２乗和と相関があり、一般にこれらの値が大きいほど、
真空外囲器の大気圧強度は大きくなることから、この実
施例１のパネルは、比較例１、２にくらべて真空外囲器
の大気圧強度をいちじるしく大きくすることができる。
従来のパネルでは、外面が平坦化されたパネルでも、内
面をこの実施例１のような曲面にしたものはない。した
がって従来例と比較しても、真空外囲器の大気圧強度上
有利であり、パネルを厚くするなどの補強の程度を軽減
して、所望の大気圧強度を有するカラー受像管を構成す
ることができる。As can be seen from the comparison between Example 1 and Comparative Examples 1 and 2, the average curvature is significantly larger than those of Comparative Examples 1 and 2 in which the amount of depression at the diagonal portion of the inner surface of the panel is the same. The sum of squares of curvature is also large. This becomes remarkable when the aspect ratio is 16: 9 and the difference between the lateral dimension and the longitudinal dimension is large as in the panel of the first embodiment. As described above, the atmospheric pressure intensity of the vacuum envelope composed of the panel and the funnel correlates with the average curvature and the sum of squares of curvature of the panel, and generally, the larger these values are,
Since the atmospheric pressure strength of the vacuum envelope becomes large, the panel of Example 1 can remarkably increase the atmospheric pressure intensity of the vacuum envelope as compared with Comparative Examples 1 and 2.
In the conventional panel, there is no panel whose outer surface is flattened and whose inner surface is curved as in the first embodiment. Therefore, compared with the conventional example, it is advantageous in terms of the atmospheric pressure strength of the vacuum envelope, and the degree of reinforcement such as thickening the panel is reduced to construct a color picture tube having a desired atmospheric pressure strength. You can
【００２８】[0028]
【実施例２】実施例２として、実施例１と同様に、横縦
の比が１６：９、対角寸法が６６cmのパネルに適用した
場合について説明する。但しこの実施例２は、平均曲率
半径を表１に示した比較例２と同じにしたものである。Second Embodiment As a second embodiment, a case where the present invention is applied to a panel having an aspect ratio of 16: 9 and a diagonal dimension of 66 cm will be described as in the case of the first embodiment. However, Example 2 has the same average radius of curvature as Comparative Example 2 shown in Table 1.
【００２９】表２に、この実施例２のパネルの曲率半
径、平均曲率などの特性を上記実施例１および比較例２
と比較して示す。Table 2 shows the characteristics such as the radius of curvature and the average curvature of the panel of the second embodiment.
It shows in comparison with.
【００３０】[0030]
【表２】 [Table 2]
【００３１】この表２に示されているように、この実施
例２のパネルは、平均曲率および曲率の２乗和が比較例
２のそれらと同じになっている。その比較例２は、内面
の長軸方向の曲率半径がＲ５９１２、短軸方向の曲率半
径が無限大であるのに対し、この実施例２では、逆に内
面の長軸方向の曲率半径が無限大、短軸方向の曲率半径
がＲ５９１２となっている。このようにこの実施例２の
パネルは、従来例２と平均曲率は同じであるが、横縦の
比が１６：９であるため、従来例２にくらべ、内面の対
角部の落込み量が大きく異なり、パネルの中央と周辺部
との厚さの差を大幅に減少させることができる。したが
って有効領域内の光透過率の差を小さくでき、表示画像
の均一性を向上させることができる。また、この実施例
２のパネルでも、有効領域外面を平坦化するために必要
な厚さの増加などの補強を比較例２と同等に抑えること
ができる。As shown in Table 2, the panel of Example 2 has the same average curvature and the sum of squares of curvature as those of Comparative Example 2. In Comparative Example 2, the radius of curvature of the inner surface in the major axis direction is R5912 and the radius of curvature in the minor axis direction is infinite, whereas in Example 2, conversely, the radius of curvature of the inner surface in the major axis direction is infinite. The major and minor axis radii of curvature are R5912. As described above, the panel of Example 2 has the same average curvature as that of Conventional Example 2, but the aspect ratio is 16: 9. The difference in thickness between the central part and the peripheral part of the panel can be greatly reduced. Therefore, the difference in light transmittance within the effective area can be reduced, and the uniformity of the displayed image can be improved. Further, also in the panel of this Example 2, reinforcement such as increase in thickness necessary for flattening the outer surface of the effective region can be suppressed to the same level as in Comparative Example 2.
【００３２】[0032]
【実施例３】この実施例３のパネルは、有効領域の外面
をほぼ完全な平面とし、有効領域の内面を、長軸方向の
曲率半径をほぼ無限大とし、短軸と管軸を含む平面およ
びこの平面と平行な平面での断面形状が位置に関係なく
一定であり、かつその断面形状が実施例１および実施例
２の単一曲率半径の円弧からなる曲面と異なる高次の多
項式で表される曲線となる曲面に形成されたものであ
る。[Third Embodiment] In the panel of the third embodiment, the outer surface of the effective region is a substantially perfect plane, and the inner surface of the effective region is a plane including the minor axis and the tube axis with the radius of curvature in the major axis direction being substantially infinite. And a high-order polynomial whose cross-sectional shape on a plane parallel to this plane is constant irrespective of the position and whose cross-sectional shape is different from the curved surface formed by the arc of the single radius of curvature of Example 1 and Example 2. It is formed on a curved surface that becomes a curved line.
【００３３】すなわち、この実施例３のパネルの有効領
域の内面形状は、側壁端面（ファンネルとの接合面）を
下にして、パネルの有効領域内面の中心を原点とし、長
軸をＸ軸、短軸をＹ軸、管軸をＺ軸とする座標系におい
て、ａを係数、 ｉ＝０，１，２…ｎ として、 Ｚ＝Σａi Ｙ2i で表される曲面となっている。特にこの実施例３では、 ｎ＝２ として、 Ｚ＝ａ1 Ｙ2 ＋ａ2 Ｙ4 ａ1 ＝−２．１３９×１０-4 ａ2 ＝−２．９１９×１０-10 としたものとなっている。That is, the shape of the inner surface of the effective area of the panel of the third embodiment is such that the end face of the side wall (joint surface with the funnel) is downward, the center of the inner surface of the effective area of the panel is the origin, and the major axis is the X axis. In a coordinate system in which the short axis is the Y axis and the tube axis is the Z axis, a is a coefficient and i = 0, 1, 2, ... N, and a curved surface represented by Z = Σa i Y 2i . In particular, in this embodiment 3, as n = 2, and is obtained by the Z = a1 Y 2 + a2 Y 4 a1 = -2.139 × 10 -4 a2 = -2.919 × 10 -10.
【００３４】このようなパネルは、実施例２のパネルに
対して、周辺部の曲率をやや大きくし、２次成分を８０
％、４次成分を２０％とした場合に相当する。このよう
なパネルの有効領域の内面形状は、 Ｚ＝−２．１３９×１０-4Ｙ2 −２．９１９×１０-10
Ｙ4 となる。図５に内面１３の対角部の落込み量を７mmした
場合の有効領域１の短軸と管軸を含む平面での断面形
状、すなわち短軸上の断面形状を示す。この短軸と管軸
を含む平面と平行な平面での断面形状は、この短軸上の
断面形状と同じ曲面となる。Such a panel has a slightly larger peripheral curvature than the panel of the second embodiment and has a second-order component of 80.
%, Which corresponds to the case where the fourth component is 20%. The inner surface shape of the effective area of such a panel is Z = −2.139 × 10 −4 Y 2 −2.919 × 10 −10
It becomes Y 4 . FIG. 5 shows a cross-sectional shape of a plane including the short axis and the tube axis of the effective area 1 when the amount of depression of the diagonal portion of the inner surface 13 is 7 mm, that is, a cross-sectional shape on the short axis. The cross-sectional shape on a plane parallel to the plane including the short axis and the tube axis has the same curved surface as the cross-sectional shape on the short axis.
【００３５】パネル３の有効領域の内面を上記のような
曲面にすると、長軸付近の曲率を小さく、長辺付近の曲
率をやや大きくでき、一般に中央部にくらべて周辺部の
方が低い真空外囲器の大気圧強度を大きくすることがで
きる。When the inner surface of the effective region of the panel 3 is formed into the curved surface as described above, the curvature near the major axis can be made small and the curvature near the long side can be made slightly large, and generally the vacuum in the peripheral portion is lower than that in the central portion. The atmospheric pressure strength of the envelope can be increased.
【００３６】[0036]
【実施例４】実施例１のパネルでは、有効領域の外面を
ほぼ完全な平面としたが、この実施例４のパネルは、有
効領域の内面を実施例１のパネルと同じにし、有効領域
の外面を、短軸方向にわずかに曲率をもつ曲面、すなわ
ち、有効領域の外面を、長軸方向の曲率半径を無限大と
し、短軸方向の曲率半径がＲ６５４５である一定曲率の
円筒状曲面としたものであり、パネル外面の対角部の落
込み量は２mmとなっている。[Embodiment 4] In the panel of Embodiment 1, the outer surface of the effective area is made almost completely flat. However, in the panel of Embodiment 4, the inner surface of the effective area is the same as that of the panel of Embodiment 1, The outer surface is a curved surface having a slight curvature in the short axis direction, that is, the outer surface of the effective region is a cylindrical curved surface having a constant curvature radius in the long axis direction of R6545 and an infinite radius of curvature in the long axis direction. The amount of depression of the diagonal part of the outer surface of the panel is 2 mm.
【００３７】この形状は、パネルの製造上の問題を考慮
して、実施例１のパネルを微少変更したものであり、実
質的に実施例１のパネルと同等の効果が得られる。This shape is a slight modification of the panel of Example 1 in consideration of a problem in manufacturing the panel, and substantially the same effect as that of the panel of Example 1 can be obtained.
【００３８】[0038]
【実施例５】この実施例５のパネルは、実施例３と実施
例４とを組合わせた形状としたものである。すなわち、
パネルの有効領域の外面を、長軸方向の曲率半径を無限
大とし、短軸方向にわずかに曲率をもつ円筒状曲面と
し、有効領域の内面を、高次の多項式で表される曲面と
したものである。[Embodiment 5] The panel of Embodiment 5 has a shape obtained by combining Embodiment 3 and Embodiment 4. That is,
The outer surface of the effective area of the panel is a cylindrical curved surface with an infinite radius of curvature in the major axis direction and a slight curvature in the minor axis direction, and the inner surface of the effective area is a curved surface expressed by a higher-order polynomial. It is a thing.
【００３９】このような形状にしても、実質的に実施例
４のパネルと同等の効果が得られる。Even with such a shape, substantially the same effect as the panel of the fourth embodiment can be obtained.
【００４０】[0040]
【実施例６】この実施例６のパネルは、有効領域の外面
をほぼ完全な平面とし、有効領域の内面を完全な円筒状
曲面ではなく、図６に示すように、長軸方向にわずかで
あるが曲率をもつものとなっている。具体的には、内面
の長軸端１４での落込み量Δ16が、 Δ16＝１mm となるように、曲率半径がＲ４１３６３となっている。
また短軸方向の曲率半径が、短軸上を曲線１７a 、短辺
付近を曲線１７b で示したように、わずかに異なるもの
となっている。表３にこの実施例６のパネルの特性を実
施例１のパネルと比較して示す。Sixth Embodiment In the panel of the sixth embodiment, the outer surface of the effective area is a substantially complete flat surface, and the inner surface of the effective area is not a perfect cylindrical curved surface. However, it has a curvature. Specifically, the radius of curvature is R41363 so that the amount of depression Δ16 at the major axis end 14 of the inner surface is Δ16 = 1 mm.
The radius of curvature in the minor axis direction is slightly different, as indicated by the curve 17a on the minor axis and the curve 17b near the short side. Table 3 shows the characteristics of the panel of Example 6 in comparison with the panel of Example 1.
【００４１】[0041]
【表３】 上記のような曲面にすることにより、パネルの有効領域
の内面は、完全な円筒状曲面とはならず、中央部１８お
よび対角部１９ともに、平均曲率は小さくなるが、基本
となる曲面形状は、この発明の曲面形状を満足してお
り、真空外囲器の大気圧強度についても、上記各実施例
とほぼ同等のものとなる。[Table 3] By making the curved surface as described above, the inner surface of the effective area of the panel does not become a perfect cylindrical curved surface, and both the central portion 18 and the diagonal portion 19 have a small average curvature, but the basic curved surface shape. Satisfies the curved surface shape of the present invention, and the atmospheric pressure strength of the vacuum envelope is almost the same as that of each of the above embodiments.
【００４２】なお、実施例３に示したパネルに対して、
その基本曲面にこの実施例６と同様の変更を加えても、
同等の効果をもつパネルとすることができる。For the panel shown in Example 3,
Even if the same change as in the sixth embodiment is added to the basic curved surface,
It can be a panel having an equivalent effect.
【００４３】以上、若干の実施例について説明したが、
この発明におけるパネルの有効領域の内面形状は、円筒
状曲面や多項式表示の曲面に限らない。たとえば実施例
１と実施例２の中間の曲率半径の曲面からなるパネルで
も、また実施例２の曲率半径以上の曲率半径の曲面から
なるパネルでも、周辺部の厚さがが同一であれば、従来
の有効領域の内面形状のパネルに対して、強度上有利に
なるというこの発明の効果が得られる。Although some embodiments have been described above,
The inner surface shape of the effective area of the panel in the present invention is not limited to the cylindrical curved surface or the curved surface of the polynomial display. For example, in the case of a panel having a curved surface with an intermediate radius of curvature between Example 1 and Example 2 or a panel having a curved surface with a radius of curvature equal to or larger than that of Example 2, as long as the peripheral portions have the same thickness, The effect of the present invention that it is advantageous in strength can be obtained with respect to the conventional panel having the inner surface shape of the effective area.
【００４４】また円筒状曲面ではなく、高次多項式で表
示される曲面でも、実施例３では、その一実施例として
４次関数の場合について説明したが、４次以上の次数を
含む表示式で、所望の特性に合せて曲面形状を調整する
ことも可能である。In the third embodiment, the case of a quartic function is described as an example of a curved surface displayed by a high-order polynomial instead of a cylindrical curved surface. It is also possible to adjust the curved surface shape according to desired characteristics.
【００４５】なお、上記実施例では、パネルの有効領域
の外面形状を、ほぼ完全な平面である場合と、短軸方向
にわずかに曲率をもつ曲面からなる場合について説明し
たが、この外面形状は、この発明の目的である視認性の
向上が達成されるものであれば、他の形状でもよい。In the above embodiments, the outer surface shape of the effective area of the panel is described as a substantially perfect flat surface and a curved surface having a slight curvature in the minor axis direction. Other shapes may be used as long as the object of the invention is to improve the visibility.
【００４６】なおまた、パネルの有効領域の外面を、わ
ずかに曲率をもつ曲面とし、かつ有効領域の内面を、製
造上の問題を考慮して完全な円筒状曲面でなく、微調整
した曲面の組合わせとしてもよい。Further, the outer surface of the effective area of the panel is a curved surface having a slight curvature, and the inner surface of the effective area is not a perfect cylindrical curved surface in consideration of manufacturing problems but a finely adjusted curved surface. It may be a combination.
【００４７】[0047]
【発明の効果】パネルの実質的に矩形状をなす有効領域
の外面を、ほぼ平面、または長軸方向の曲率半径をほぼ
無限大とし、短軸方向をほぼ一定曲率の曲面とし、この
有効領域の内面を、長軸方向の曲率半径をほぼ無限大と
し短軸方向をほぼ一定曲率半径の曲面とする円筒状曲
面、または長軸方向の曲率半径をほぼ無限大とし短軸方
向を高次の多項式で表される曲面とし、さらには長軸方
向の曲率をもち、短軸方向を短軸上と有効領域の短辺近
傍とで異なる曲率をもつ曲面とすると、パネルを大幅に
補強することなく、パネルの有効領域外面の平坦度を向
上させて、視認性のすぐれたカラー受像管を構成するこ
とができる。The outer surface of the substantially rectangular effective area of the panel is a substantially flat surface, or the curvature radius in the major axis direction is substantially infinite and the minor axis direction is a curved surface having a substantially constant curvature. The inner surface of is a cylindrical curved surface with a radius of curvature in the major axis direction of almost infinity and a minor axis in which the radius of curvature is almost constant, or a radius of curvature in the major axis direction of almost infinity If the curved surface is expressed by a polynomial, and further has a curvature in the major axis direction and a minor axis in the minor axis and a curvature near the short side of the effective area, there is no need to reinforce the panel significantly. By improving the flatness of the outer surface of the effective area of the panel, it is possible to configure a color picture tube having excellent visibility.
【図１】この発明の実施の一形態であるカラー受像管の
構成を示す図である。FIG. 1 is a diagram showing a configuration of a color picture tube according to an embodiment of the present invention.
【図２】図２（ａ）はこの発明の実施の一形態であるカ
ラー受像管のパネルの有効領域の形状を示す斜視図、図
２（ｂ）はその短軸方向の曲率半径を示す図、図２
（ｃ）は長軸方向の曲率半径を示す図、図２（ｄ）は短
軸方向と平行な方向の曲率半径を示す図である。FIG. 2 (a) is a perspective view showing the shape of an effective region of a panel of a color picture tube which is an embodiment of the present invention, and FIG. 2 (b) is a view showing a radius of curvature in a minor axis direction thereof. , Fig. 2
FIG. 2C is a diagram showing the radius of curvature in the major axis direction, and FIG. 2D is a diagram showing the radius of curvature in the direction parallel to the minor axis direction.
【図３】この発明の実施例１のパネルの有効領域の内面
形状を示す図である。FIG. 3 is a diagram showing an inner surface shape of an effective region of the panel according to the first embodiment of the present invention.
【図４】図４（ａ）は上記実施例１のパネルと比較する
ために示した比較例１のパネルの有効領域の内面形状を
示す図、図４（ｂ）は比較例１のパネルの有効領域の内
面形状を示す図である。4A is a diagram showing an inner surface shape of an effective region of the panel of Comparative Example 1 shown for comparison with the panel of Example 1 described above, and FIG. 4B is a diagram of the panel of Comparative Example 1; It is a figure which shows the inner surface shape of an effective area.
【図５】この発明の実施例３のパネルの短軸上の断面形
状を示す図である。FIG. 5 is a diagram showing a cross-sectional shape on a minor axis of a panel of Example 3 of the present invention.
【図６】この発明の実施例６のパネルの有効領域の内面
形状を説明するための図である。FIG. 6 is a diagram for explaining an inner surface shape of an effective area of a panel according to a sixth embodiment of the present invention.
１…有効領域 ３…パネル ４…ファンネル ５…蛍光体スクリーン １２…外面 １３…内面 1 ... Effective area 3 ... Panel 4 ... Funnel 5 ... Phosphor screen 12 ... Outer surface 13 ... Inner surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 井上 雅及 埼玉県深谷市幡羅町一丁目９番２号 株式 会社東芝深谷電子工場内 (72)発明者 福田 久美雄 埼玉県深谷市幡羅町一丁目９番２号 株式 会社東芝深谷電子工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Inoue 1-9-2 Harara-cho, Fukaya-shi, Saitama Prefecture Fukaya Electronics Factory, Toshiba Corporation (72) Kumio Fukuda 1-chome, Harara-cho, Fukaya-shi, Saitama No. 2 inside Toshiba Fukaya Electronics Factory
Claims (5)
るパネルの有効領域が実質的に矩形状をなし、この有効
領域の内面に蛍光体スクリーンが形成されてなるカラー
受像管において、 上記パネルは上記有効領域の外面がほぼ平面からなり、
この有効領域の内面が長軸方向の曲率半径をほぼ無限大
とし、短軸方向をほぼ一定曲率半径の曲面とする円筒状
曲面からなることを特徴とするカラー受像管。1. A color picture tube in which an effective area of a panel forming a vacuum envelope together with a funnel has a substantially rectangular shape, and a phosphor screen is formed on an inner surface of the effective area. The outer surface of the effective area is almost flat,
A color picture tube characterized in that the inner surface of this effective region is formed of a cylindrical curved surface having a substantially infinite radius of curvature in the major axis direction and a substantially constant radius of curvature in the minor axis direction.
るパネルの有効領域が実質的に矩形状をなし、この有効
領域の内面に蛍光体スクリーンが形成されてなるカラー
受像管において、 上記パネルは上記有効領域の外面が長軸方向の曲率半径
をほぼ無限大とし、短軸方向に曲率をもつ曲面からな
り、この有効領域の内面が長軸方向の曲率半径をほぼ無
限大とし、短軸方向をほぼ一定曲率半径の曲面とする円
筒状曲面からなることを特徴とするカラー受像管。2. A color picture tube in which an effective area of a panel forming a vacuum envelope together with a funnel is substantially rectangular, and a phosphor screen is formed on an inner surface of the effective area. The outer surface of the effective area has a curvature radius in the major axis direction that is almost infinite, and is composed of a curved surface with a curvature in the minor axis direction. A color picture tube comprising a cylindrical curved surface having a substantially constant radius of curvature.
率半径をほぼ無限大とし、短軸方向が高次の多項式で表
される曲面からなることを特徴とする請求項１または２
記載のカラー受像管。3. The panel according to claim 1, wherein the inner surface of the effective region of the panel has a curvature radius in the major axis direction of substantially infinity and a curved surface represented by a high-order polynomial in the minor axis direction.
A color picture tube as described.
るパネルの有効領域が実質的に矩形状をなし、この有効
領域の内面に蛍光体スクリーンが形成されてなるカラー
受像管において、 上記パネルは上記有効領域の外面がほぼ平面からなり、
この有効領域の内面が長軸方向に曲率をもち、短軸方向
が短軸上と短辺近傍とで異なる曲率の曲面からなること
を特徴とするカラー受像管。4. A color picture tube in which an effective area of a panel forming a vacuum envelope together with a funnel has a substantially rectangular shape, and a phosphor screen is formed on an inner surface of the effective area. The outer surface of the effective area is almost flat,
A color picture tube characterized in that the inner surface of this effective region has a curvature in the major axis direction, and the minor axis direction is a curved surface having different curvatures on the minor axis and near the short side.
との寸法比が１６：９であることを特徴とする請求項１
乃至４のいずれか記載のカラー受像管。5. The dimensional ratio between the major axis direction and the minor axis direction of the effective area of the panel is 16: 9.
5. The color picture tube according to any one of 4 to 4.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4903096A JPH09245685A (en) | 1996-03-06 | 1996-03-06 | Color picture tube |
| PCT/JP1997/000630 WO1997033298A1 (en) | 1996-03-06 | 1997-03-03 | Cathode ray tube and method for manufacturing the same |
| US08/952,080 US6025676A (en) | 1996-03-06 | 1997-03-03 | Cathode ray tube having improved curvature characteristics and method of fabrication thereof |
| CN97190155A CN1124636C (en) | 1996-03-06 | 1997-03-03 | Cathode ray tube and method for mfg. the same |
| EP97903644A EP0828281A4 (en) | 1996-03-06 | 1997-03-03 | Cathode ray tube and method for manufacturing the same |
| TW086102501A TW341711B (en) | 1996-03-06 | 1997-03-03 | Cathode ray tube and method for manufacturing the same |
| KR1019970707834A KR100313829B1 (en) | 1996-03-06 | 1997-03-03 | Cathode ray tube and its manufacturing method |
| MYPI97000909A MY119123A (en) | 1996-03-06 | 1997-03-05 | Cathode ray tube having improved curvature characteristics and method of fabrication thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4903096A JPH09245685A (en) | 1996-03-06 | 1996-03-06 | Color picture tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09245685A true JPH09245685A (en) | 1997-09-19 |
Family
ID=12819705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4903096A Pending JPH09245685A (en) | 1996-03-06 | 1996-03-06 | Color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09245685A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000017904A1 (en) * | 1998-09-17 | 2000-03-30 | Kabushiki Kaisha Toshiba | Color picture tube |
| JP2000149829A (en) * | 1998-11-13 | 2000-05-30 | Samsung Sdi Co Ltd | Cathode ray tube |
| US6133681A (en) * | 1997-09-02 | 2000-10-17 | Mitsubishi Denki Kabushiki Kaisha | Color picture tube device having contoured panel and auxiliary coil for reducing apparent screen distortions |
| KR100331820B1 (en) * | 2000-04-12 | 2002-04-09 | 구자홍 | Flat Cathode Ray Tube |
| US6414425B1 (en) | 1998-08-31 | 2002-07-02 | Kabushiki Kaisha Toshiba | Cathode-ray tube |
| US6433470B1 (en) | 2000-05-08 | 2002-08-13 | Hitachi, Ltd. | Color cathode ray tube |
| US6472805B1 (en) | 1999-08-19 | 2002-10-29 | Kabushiki Kaisha Toshiba | Color cathode ray tube |
| US6650036B2 (en) | 2001-02-15 | 2003-11-18 | Kabushiki Kaisha Toshiba | Color cathode ray tube having a radius of curvature ratio relationship |
| KR100411694B1 (en) * | 2000-05-19 | 2003-12-18 | 가부시키가이샤 히타치세이사쿠쇼 | Color cath0de ray tube |
| KR100414501B1 (en) * | 2002-02-06 | 2004-01-07 | 엘지.필립스디스플레이(주) | A Panel Structure of Transposed scan CRT |
| KR100432114B1 (en) * | 1999-04-28 | 2004-05-17 | 가부시키가이샤 히타치세이사쿠쇼 | Color cathode-ray tube |
| KR100491219B1 (en) * | 1997-12-26 | 2005-09-12 | 가부시끼가이샤 도시바 | Color Water Center |
-
1996
- 1996-03-06 JP JP4903096A patent/JPH09245685A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6133681A (en) * | 1997-09-02 | 2000-10-17 | Mitsubishi Denki Kabushiki Kaisha | Color picture tube device having contoured panel and auxiliary coil for reducing apparent screen distortions |
| KR100491219B1 (en) * | 1997-12-26 | 2005-09-12 | 가부시끼가이샤 도시바 | Color Water Center |
| US6414425B1 (en) | 1998-08-31 | 2002-07-02 | Kabushiki Kaisha Toshiba | Cathode-ray tube |
| WO2000017904A1 (en) * | 1998-09-17 | 2000-03-30 | Kabushiki Kaisha Toshiba | Color picture tube |
| US6573649B1 (en) | 1998-09-17 | 2003-06-03 | Kabushiki Kaisha Toshiba | Color picture tube |
| JP2000149829A (en) * | 1998-11-13 | 2000-05-30 | Samsung Sdi Co Ltd | Cathode ray tube |
| KR100432114B1 (en) * | 1999-04-28 | 2004-05-17 | 가부시키가이샤 히타치세이사쿠쇼 | Color cathode-ray tube |
| US6472805B1 (en) | 1999-08-19 | 2002-10-29 | Kabushiki Kaisha Toshiba | Color cathode ray tube |
| KR100331820B1 (en) * | 2000-04-12 | 2002-04-09 | 구자홍 | Flat Cathode Ray Tube |
| US6433470B1 (en) | 2000-05-08 | 2002-08-13 | Hitachi, Ltd. | Color cathode ray tube |
| KR100411694B1 (en) * | 2000-05-19 | 2003-12-18 | 가부시키가이샤 히타치세이사쿠쇼 | Color cath0de ray tube |
| US6650036B2 (en) | 2001-02-15 | 2003-11-18 | Kabushiki Kaisha Toshiba | Color cathode ray tube having a radius of curvature ratio relationship |
| KR100414501B1 (en) * | 2002-02-06 | 2004-01-07 | 엘지.필립스디스플레이(주) | A Panel Structure of Transposed scan CRT |
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