JPH11283530A - Cathode-ray tube and its manufacture - Google Patents
Cathode-ray tube and its manufactureInfo
- Publication number
- JPH11283530A JPH11283530A JP10016498A JP10016498A JPH11283530A JP H11283530 A JPH11283530 A JP H11283530A JP 10016498 A JP10016498 A JP 10016498A JP 10016498 A JP10016498 A JP 10016498A JP H11283530 A JPH11283530 A JP H11283530A
- Authority
- JP
- Japan
- Prior art keywords
- glass panel
- ray tube
- face portion
- cathode ray
- center
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、テレビジョン受信機等
に使用される陰極線管と、その製造方法に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cathode ray tube used for a television receiver or the like, and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】図２は、一般的な陰極線管の構造を示す
一部破断概略説明図である。この陰極線管は、内面に蛍
光膜１０を有するガラスパネル１１と、このガラスパネ
ル１１の背後を形成する漏斗状のファンネル１２及び電
子銃を収納するネック１３からなるガラスバルブを外囲
器として有している。また蛍光膜１０に対向するように
してシャドウマスク１４が配設されており、電子銃から
出た電子線が、シャドーマスク１４を通して蛍光膜１０
に照射されることにより、ガラスパネル１１の前面部
（以下、フェース部という）に映像が映し出される。2. Description of the Related Art FIG. 2 is a partially broken schematic explanatory view showing the structure of a general cathode ray tube. This cathode ray tube has, as an envelope, a glass bulb including a glass panel 11 having a fluorescent film 10 on the inner surface, a funnel-shaped funnel 12 behind the glass panel 11 and a neck 13 for accommodating an electron gun. ing. A shadow mask 14 is provided so as to face the fluorescent film 10, and an electron beam emitted from the electron gun passes through the shadow mask 14
Is projected on the front part (hereinafter, referred to as a face part) of the glass panel 11.
【０００３】このような陰極線管は、内部が高い真空状
態となっており、ガラスバルブには圧縮応力及び引張応
力が生じており、ガラスバルブに機械的衝撃が加えられ
ると爆縮を起こす危険性があるため、一般にガラスパネ
ルのフェース部の肉厚は、陰極線管として十分な強度を
維持する目的で、周辺付近が中央付近より厚くなってい
る。[0003] The inside of such a cathode ray tube is in a high vacuum state, compressive stress and tensile stress are generated in the glass bulb, and there is a danger of implosion when a mechanical shock is applied to the glass bulb. Therefore, the thickness of the face portion of the glass panel is generally thicker near the periphery than near the center in order to maintain sufficient strength as a cathode ray tube.
【０００４】そのため通常のガラスパネルは、フェース
部の周辺と中央の透過率に差が生じやすく、中央に比べ
て周辺の輝度が低くなるため、画像の明るさにムラが生
じ、見づらくなる。[0004] For this reason, in a normal glass panel, a difference tends to occur in the transmittance between the periphery and the center of the face portion, and the luminance at the periphery is lower than that at the center.
【０００５】またガラスパネルの透過率は、その用途に
応じて様々であるが、ガラスパネルの透過率が低くなる
ほど、フェース部の中央と周辺の肉厚差に起因する透過
率差が大きくなる。[0005] The transmittance of the glass panel varies depending on the application, but as the transmittance of the glass panel decreases, the transmittance difference due to the difference in thickness between the center and the periphery of the face portion increases.
【０００６】このような背景から、透過率の高いガラス
から作製されたガラスパネルを使用し、そのフェース部
に着色ガラス板を接着剤で貼り付けることによって、そ
の中央と周辺の透過率差を低減し、輝度差を小さくした
陰極線管が提案されている。[0006] Against this background, a glass panel made of glass having high transmittance is used, and a colored glass plate is attached to the face of the glass panel with an adhesive to reduce the difference in transmittance between the center and the periphery. In addition, a cathode ray tube with a reduced luminance difference has been proposed.
【０００７】[0007]
【発明が解決しようとする課題】ところで近年、ガラス
パネルの平坦化が要求されつつあり、フェース部の外表
面の対角軸方向における曲率半径を１００００ｍｍ以上
にすることが試みられている。しかしながら、ガラスパ
ネルのフェース部の曲率半径が大きくなるほど、爆縮の
危険性が高くなるため、上記のようにガラスパネルのフ
ェース部の外表面の対角軸方向における曲率半径を１０
０００ｍｍ以上にする場合には、フェース部の対角線方
向における周辺の肉厚（ＴＥ）と、中央の肉厚（Ｔ0 ）
を、１．２≦ＴＥ／Ｔ0 ≦４．０式を満足するように設
計している。In recent years, flattening of glass panels has been demanded, and attempts have been made to increase the radius of curvature of the outer surface of the face portion in the diagonal axis direction to 10,000 mm or more. However, as the radius of curvature of the face portion of the glass panel increases, the risk of implosion increases. Therefore, as described above, the radius of curvature of the outer surface of the face portion of the glass panel in the diagonal axis direction is set to 10
When the thickness is 000 mm or more, the peripheral wall thickness (TE) in the diagonal direction of the face portion and the central wall thickness (T 0 ).
Are designed to satisfy the expression 1.2 ≦ TE / T 0 ≦ 4.0.
【０００８】しかしながら、このようにガラスパネルの
フェース部の周辺と中央の肉厚差があまり大きくなる
と、その前面に、上記のような着色ガラス板を貼り付け
ても、その周辺と中央の透過率差を十分に小さくするの
が困難になる。However, when the difference in thickness between the periphery and the center of the face portion of the glass panel becomes so large, even if the above-described colored glass plate is pasted on the front surface, the transmittance between the periphery and the center of the glass panel is increased. It is difficult to make the difference sufficiently small.
【０００９】またガラスパネルのフェース部の肉厚が大
きくなるほど、陰極線管が重くなるが、その前面に着色
ガラス板を貼り付けると、さらに陰極線管の重量が大き
くなり、搬送が困難となるという不具合もある。さらに
着色ガラス板を貼り付ける際に、接着剤中に気泡が混入
したり、脈理が発生し、画像が見づらくなることがあ
り、しかも長期間使用している間に接着剤が劣化して着
色ガラス板が剥離する虞れもある。Further, the cathode ray tube becomes heavier as the thickness of the face portion of the glass panel becomes larger. However, if a colored glass plate is pasted on the front surface of the cathode ray tube, the weight of the cathode ray tube further increases, making transport difficult. There is also. In addition, when attaching a colored glass plate, bubbles may be mixed into the adhesive or striae may occur, making it difficult to see the image. The glass plate may be peeled off.
【００１０】本発明は、上記事情に鑑みなされたもので
あり、ガラスパネルのフェース部の中央と周辺の肉厚差
が大きくても、着色ガラス板を使用することなく、画像
の中央と周辺の透過率の差を低減できる陰極線管と、そ
の製造方法を提供することを目的とするものである。The present invention has been made in view of the above circumstances, and even if the thickness difference between the center and the periphery of the face of the glass panel is large, the center and the periphery of the image are not used without using a colored glass plate. It is an object of the present invention to provide a cathode ray tube capable of reducing the difference in transmittance and a method for manufacturing the same.
【００１１】[0011]
【課題を解決するための手段】本発明の陰極線管は、フ
ェース部の中央と周辺とで肉厚が異なるガラスパネルを
用いた陰極線管であって、ガラスパネルの外表面には、
着色膜が形成されており、この着色膜は、ガラスパネル
のフェース部の肉厚の厚い部分に対応する部分の色調が
淡く、またガラスパネルのフェース部の肉厚の薄い部分
に対応する部分の色調が濃く、これによってガラスパネ
ルのフェース部の中央と周辺の肉厚の違いによる透過率
の差が低減されてなることを特徴とする。The cathode ray tube of the present invention is a cathode ray tube using a glass panel having different thicknesses at the center and the periphery of the face portion, and the outer surface of the glass panel has
A colored film is formed, and the colored film has a light color tone at a portion corresponding to the thick portion of the face portion of the glass panel, and a color film at a portion corresponding to the thin portion of the face portion of the glass panel. The color tone is deep, whereby the difference in transmittance due to the difference in thickness between the center and the periphery of the face portion of the glass panel is reduced.
【００１２】また本発明における陰極線管の製造方法
は、フェース部の中央と周辺とで肉厚が異なるガラスパ
ネルの外表面に対し、スプレーコート法によって着色コ
ート液を塗布する際、ガラスパネルのフェース部の肉厚
の厚い部分に対して淡い色調の着色コート液をスプレー
塗布し、ガラスパネルのフェース部の肉厚の薄い部分に
対して濃い色調の着色コート液をスプレー塗布し、これ
によってガラスパネルのフェース部の肉厚の厚い部分に
対応する部分の色調が淡く、またガラスパネルのフェー
ス部の肉厚の薄い部分に対応する部分の色調が濃い着色
膜を形成することを特徴とする。Further, the method of manufacturing a cathode ray tube according to the present invention is characterized in that when a colored coating solution is applied by spray coating to the outer surface of a glass panel having different thicknesses at the center and at the periphery of the face portion, The thick colored portion of the glass panel is spray-coated with a light-colored colored coating solution, and the thin colored portion of the face portion of the glass panel is spray-coated with the dark-colored colored coating solution. A color film is formed such that a portion corresponding to the thick portion of the face portion has a light color and a portion corresponding to the thin portion of the face portion of the glass panel has a dark color tone.
【００１３】さらに本発明においては、ガラスパネルの
フェース部の外表面の対角軸方向における曲率半径が、
１００００ｍｍ以上であることを特徴とし、ガラスパネ
ルのフェース部の外表面の対角軸方向における周辺の肉
厚をＴＥ、中央の肉厚Ｔ0 とする時、１．２≦ＴＥ／Ｔ
0 ≦４．０の式を満足することを特徴とし、外表面に着
色膜が形成されたガラスパネルのフェース部の中央と周
辺の透過率の差が５％以内であることを特徴とする。Further, in the present invention, the radius of curvature of the outer surface of the face portion of the glass panel in the diagonal axis direction is:
And characterized in that a 10000mm above, when the thickness of the peripheral in the diagonal axis direction of the outer surface of the face portion of the glass panel TE, a central thickness T 0, 1.2 ≦ TE / T
It is characterized by satisfying the expression of 0 ≦ 4.0, wherein the difference in transmittance between the center and the periphery of the face portion of the glass panel having the colored film formed on the outer surface is within 5%.
【００１４】[0014]
【作用】本発明の陰極線管において、ガラスパネルの外
表面に形成された透明な着色膜が、ガラスパネルのフェ
ース部の肉厚の厚い部分に対応する部分の色調が淡く、
またガラスパネルのフェース部の肉厚の薄い部分に対応
する部分の色調が濃いため、従来、特にフェース部の周
辺のみで生じていた輝度の低下がなくなり、フェース部
の中央と周辺の透過率の差が低減され（小さくなり）、
両者の透過率を近似させることが可能となる。In the cathode ray tube of the present invention, the transparent color film formed on the outer surface of the glass panel has a light color tone at a portion corresponding to the thick portion of the face portion of the glass panel.
In addition, since the color tone of the portion corresponding to the thin portion of the face portion of the glass panel is dark, the decrease in luminance that has conventionally occurred only around the face portion is eliminated, and the transmittance of the center and the periphery of the face portion is reduced. The difference is reduced (smaller),
It is possible to approximate the transmittance of both.
【００１５】そのためガラスパネルのフェース部の外表
面の対角軸方向における曲率半径を１００００ｍｍ以上
とする場合に、防爆を考慮してガラスパネルのフェース
部の対角軸方向における周辺の肉厚をＴＥとし、中央の
肉厚をＴ0 とする時、ＴＥ／Ｔ0 が１．２以上となるよ
うにしても、成膜後のフェース部の中央と周辺の透過率
の差を５％以内に抑えることができ、実質的に画像の明
るさのムラを抑えることが可能となる。ただし、ＴＥ／
Ｔ0 が４．０以上になると、陰極線管の重量が大きくな
りすぎるため好ましくない。Therefore, when the radius of curvature of the outer surface of the face portion of the glass panel in the diagonal axis direction is 10,000 mm or more, the peripheral thickness of the face portion of the glass panel in the diagonal axis direction is set to TE in consideration of explosion proof. When the thickness at the center is T 0 , even if TE / T 0 is 1.2 or more, the difference in transmittance between the center and the periphery of the face portion after film formation is suppressed to within 5%. Thus, it is possible to substantially suppress unevenness in brightness of an image. However, TE /
When T 0 is 4.0 or more, the weight of the cathode ray tube becomes too large, which is not preferable.
【００１６】また本発明の陰極線管の製造方法では、ス
プレーコート法を採用するため、着色膜の色調、濃淡の
度合い、塗布量、塗布範囲を適宜選択しやすく、しかも
全面に亘って膜厚を均一に制御しやすいという利点もあ
る。In the method of manufacturing a cathode ray tube according to the present invention, since the spray coating method is employed, it is easy to appropriately select the color tone, the degree of shading, the coating amount, and the coating range of the colored film. There is also an advantage that uniform control is easy.
【００１７】この成膜作業は、ファンネルと封合される
前のガラスパネルに対して行っても良いし、陰極線管と
した後で行っても良い。ただしファンネルと封合される
前のガラスパネルに成膜する場合は、後の封合工程等に
おける熱処理時に劣化しないような膜材料を選択する必
要がある。This film forming operation may be performed on the glass panel before it is sealed with the funnel, or may be performed after forming the cathode ray tube. However, when a film is formed on a glass panel before being sealed with the funnel, it is necessary to select a film material that does not deteriorate during heat treatment in a later sealing step or the like.
【００１８】本発明における着色膜の材料としては、ガ
ラスパネルの透過率を低下し、スプレーコート法によっ
て所期の色調が得られるものであれば、いずれの材料も
使用でき、例えば金属微粒子や有機顔料を含有するシリ
カスプレー液や着色スプレー液等が使用可能である。As the material of the colored film in the present invention, any material can be used as long as it can reduce the transmittance of the glass panel and obtain the desired color tone by the spray coating method. A silica spray liquid or a colored spray liquid containing a pigment can be used.
【００１９】[0019]
【実施例】以下、本発明を実施例に基づいて詳細に説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments.
【００２０】図１は、本発明の陰極線管（２１インチ）
を示す一部破断概略説明図であり、ガラスパネル１１、
ファンネル１２及びネック１３が封合されることによっ
てガラスバルブが作製されている。FIG. 1 shows a cathode ray tube (21 inches) according to the present invention.
It is a partially broken schematic explanatory view showing, the glass panel 11,
A glass bulb is manufactured by sealing the funnel 12 and the neck 13.
【００２１】この陰極線管のガラスパネル１１のフェー
ス部の対角軸方向における中央の肉厚（Ｔ0 ）は１０ｍ
ｍ、周辺の肉厚（ＴＥ）は２０ｍｍ、フェース部の外表
面の対角軸方向における曲率半径は１０００００ｍｍで
あり、フェース部の中央の透過率は８０％、周辺の透過
率は７０％である。またこのガラスパネル１１のフェー
ス部の外表面には、コバルト顔料含有シリカ膜からなる
着色膜１５が形成されている。この着色膜１５の中央
（中心点から半径約１００ｍｍの範囲）の透過率は５８
％であり、またそれ以外の周辺部の透過率は６６％であ
る。The center thickness (T 0 ) of the face portion of the glass panel 11 of the cathode ray tube in the diagonal axis direction is 10 m.
m, the peripheral thickness (TE) is 20 mm, the radius of curvature of the outer surface of the face portion in the diagonal axis direction is 100,000 mm, the transmittance at the center of the face portion is 80%, and the transmittance at the periphery is 70%. . On the outer surface of the face of the glass panel 11, a colored film 15 made of a silica film containing a cobalt pigment is formed. The transmittance at the center of this colored film 15 (with a radius of about 100 mm from the center point) is 58.
%, And the transmittance at the other peripheral portions is 66%.
【００２２】この陰極線管は、次のような方法で作製し
た。This cathode ray tube was manufactured by the following method.
【００２３】まず、外表面側が上方に向くようにしてガ
ラスパネル１１を配置し、フェース部の中央に対し、膜
透過率が５８％となるように調整されたコバルト顔料含
有シリカコート液をスプレー塗布し、次いでガラスパネ
ル１１のフェース部の周辺に対し、膜透過率が６６％と
なるように調整されたコバルト顔料含有シリカコート液
をスプレー塗布することによって、ガラスパネル１０の
フェース部の外表面全体に着色膜１５を塗布形成した。First, the glass panel 11 is placed so that the outer surface side faces upward, and a silica coating solution containing a cobalt pigment adjusted to have a film transmittance of 58% is spray-coated on the center of the face portion. Then, the periphery of the face portion of the glass panel 11 is spray-coated with a silica coating solution containing a cobalt pigment adjusted to have a film transmittance of 66%, whereby the entire outer surface of the face portion of the glass panel 10 is sprayed. A colored film 15 was formed by coating.
【００２４】こうして得られた着色膜付きガラスパネル
１１の透過率を測定したところ、フェース部の中央と周
辺のいずれもが４６％であり、このガラスパネル１１を
用いて陰極線管を作製し、その画像を観視したところ、
明るさにムラは認められなかった。When the transmittance of the glass panel 11 with the colored film obtained as described above was measured, both the center and the periphery of the face portion were 46%. Using this glass panel 11, a cathode ray tube was manufactured. Looking at the image,
No unevenness was observed in the brightness.
【００２５】尚、上記したガラスパネルの透過率は、分
光光度計により測定した波長３８０〜７８０ｍｍの視感
平均透過率を適用した。As the transmittance of the above-mentioned glass panel, an average luminous transmittance at a wavelength of 380 to 780 mm measured by a spectrophotometer was applied.
【００２６】また上記実施例では、濃淡の度合いの異な
る２種類の着色コート液を使用した例を示したが、本発
明は、これに限定されるものではなく、濃淡の度合いの
異なる３種類以上の着色コート液を使用し、ガラスパネ
ルのフェース部の中央から周辺にかけて３箇所以上の色
調の濃淡を有する着色膜を形成しても良い。In the above embodiment, an example was shown in which two types of colored coating liquids having different shades were used. However, the present invention is not limited to this, and three or more kinds of colored coats having different shades are used. May be used to form a colored film having three or more shades of color from the center to the periphery of the face portion of the glass panel.
【００２７】[0027]
【発明の効果】以上のように本発明の陰極線管は、フェ
ース部の中央と周辺とで肉厚が異なるガラスパネルを使
用しながらも、着色膜によってフェース部の中央と周辺
の透過率の差が低減するため、画像の中央と周辺の輝度
差が小さくなり、明るさにムラが生じることはない。As described above, in the cathode ray tube of the present invention, the difference in transmittance between the center and the periphery of the face portion due to the colored film is obtained while using a glass panel having different thicknesses at the center and the periphery of the face portion. Is reduced, the luminance difference between the center and the periphery of the image is reduced, and there is no unevenness in brightness.
【００２８】また本発明の陰極線管は、ガラスパネルの
外表面に着色膜を形成してなるため、着色ガラス板を使
用する場合に比べると、重量の増加が格段に小さく、長
期間に亘って良好な画像面を保つことができる。Further, since the cathode ray tube of the present invention has a colored film formed on the outer surface of a glass panel, the increase in weight is remarkably small as compared with the case where a colored glass plate is used, and the cathode ray tube is used for a long time. A good image surface can be maintained.
【００２９】しかも本発明の方法では、スプレーコート
法によって成膜するため、所望の着色膜を有する陰極線
管を容易に製造することが可能である。Further, in the method of the present invention, since the film is formed by the spray coating method, it is possible to easily manufacture a cathode ray tube having a desired colored film.
【図１】本発明の陰極線管を示す一部破断概略説明図で
ある。FIG. 1 is a partially cutaway schematic explanatory view showing a cathode ray tube of the present invention.
【図２】一般的な陰極線管の構造を示す一部破断概略説
明図である。FIG. 2 is a schematic explanatory view, partially broken away, showing a structure of a general cathode ray tube.
１１ ガラスパネル １２ ファンネル １３ ネック １５ 着色膜 11 Glass panel 12 Funnel 13 Neck 15 Colored film
Claims (8)
るガラスパネルを用いた陰極線管であって、ガラスパネ
ルの外表面には、着色膜が形成されており、この着色膜
は、ガラスパネルのフェース部の肉厚の厚い部分に対応
する部分の色調が淡く、またガラスパネルのフェース部
の肉厚の薄い部分に対応する部分の色調が濃く、これに
よってガラスパネルのフェース部の中央と周辺の肉厚の
違いによる透過率の差が低減されてなることを特徴とす
る陰極線管。1. A cathode ray tube using a glass panel having different thicknesses at the center and the periphery of a face portion, wherein a colored film is formed on an outer surface of the glass panel, and the colored film is made of glass. The color corresponding to the thick part of the face of the panel is lighter, and the color corresponding to the thinner part of the face of the glass panel is darker. A cathode ray tube characterized in that a difference in transmittance due to a difference in peripheral thickness is reduced.
角軸方向における曲率半径が、１００００ｍｍ以上であ
ることを特徴とする請求項１記載の陰極線管。2. The cathode ray tube according to claim 1, wherein the radius of curvature of the outer surface of the face portion of the glass panel in the diagonal axis direction is 10,000 mm or more.
における周辺の肉厚をＴＥ、中央の肉厚をＴ0 とする
時、１．２≦ＴＥ／Ｔ0 ≦４．０の式を満足することを
特徴とする請求項１、２記載の陰極線管。3. When the peripheral thickness of the face portion of the glass panel in the diagonal axis direction is TE and the central thickness is T 0 , the expression 1.2 ≦ TE / T 0 ≦ 4.0 is satisfied. 3. A cathode ray tube according to claim 1, wherein
ルのフェース部の中央と周辺の透過率の差が５％以内で
あることを特徴とする請求項１〜３記載の陰極線管。4. The cathode ray tube according to claim 1, wherein a difference in transmittance between the center and the periphery of the face portion of the glass panel having the colored film formed on the outer surface is within 5%.
るガラスパネルの外表面に対し、スプレーコート法によ
って着色コート液を塗布する際、ガラスパネルのフェー
ス部の肉厚の厚い部分に対して淡い色調の着色コート液
をスプレー塗布し、ガラスパネルのフェース部の肉厚の
薄い部分に対して濃い色調の着色コート液をスプレー塗
布し、これによってガラスパネルのフェース部の肉厚の
厚い部分に対応する部分の色調が淡く、またガラスパネ
ルのフェース部の肉厚の薄い部分に対応する部分の色調
が濃い着色膜を形成することを特徴とする陰極線管の製
造方法。5. A method for applying a colored coating solution to an outer surface of a glass panel having a different thickness at the center and at the periphery of a face portion by a spray coating method, wherein a thicker portion of the face portion of the glass panel is applied. Spray coating a light color tint coating liquid, and spray coating a dark color tinting coating liquid to a thin part of the face part of the glass panel, thereby forming a thick part of the face part of the glass panel. A method of manufacturing a cathode ray tube, comprising: forming a colored film in which the color tone corresponding to (1) is light and the color tone corresponding to the thin portion of the face portion of the glass panel is dark.
角軸方向における曲率半径が、１００００ｍｍ以上であ
ることを特徴とする請求項５記載の陰極線管の製造方
法。6. The method for manufacturing a cathode ray tube according to claim 5, wherein the radius of curvature of the outer surface of the face portion of the glass panel in the diagonal axis direction is 10,000 mm or more.
における周辺の肉厚をＴＥ、中央の肉厚をＴ0 とする
時、１．２≦ＴＥ／Ｔ0 ≦４．０の式を満足することを
特徴とする請求項５、６記載の陰極線管の製造方法。7. When the peripheral thickness in the diagonal axis direction of the face portion of the glass panel is TE and the central thickness is T 0 , the expression 1.2 ≦ TE / T 0 ≦ 4.0 is satisfied. 7. The method for manufacturing a cathode ray tube according to claim 5, wherein:
ース部の中央と周辺の透過率の差が５％以内であること
を特徴とする請求項５〜７記載の陰極線管の製造方法。8. The method of manufacturing a cathode ray tube according to claim 5, wherein a difference in transmittance between the center and the periphery of the face portion of the glass panel on which the colored film is formed is within 5%.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10016498A JPH11283530A (en) | 1998-03-26 | 1998-03-26 | Cathode-ray tube and its manufacture |
| US09/405,538 US6268693B1 (en) | 1998-03-26 | 1999-09-24 | Cathode ray tube having a reduced difference in light transmittances between a central region and a peripheral region of a panel face thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10016498A JPH11283530A (en) | 1998-03-26 | 1998-03-26 | Cathode-ray tube and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11283530A true JPH11283530A (en) | 1999-10-15 |
Family
ID=14266685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10016498A Pending JPH11283530A (en) | 1998-03-26 | 1998-03-26 | Cathode-ray tube and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11283530A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000044029A1 (en) * | 1999-01-25 | 2000-07-27 | Asahi Glass Company, Limited | Crt panel glass and production method thereof and crt |
| EP1176622A2 (en) * | 2000-07-24 | 2002-01-30 | Matsushita Electric Industrial Co., Ltd. | Cathode ray tube and method for manufacturing the same |
| WO2002009136A1 (en) * | 2000-07-24 | 2002-01-31 | Asahi Glass Company, Limited | Panel glass for crt, crt, and method for producing them |
| US6770344B2 (en) | 2000-03-22 | 2004-08-03 | Asahi Glass Company, Limited | Functional laminated film, its production process and CRT having said film attached thereto |
| KR100443611B1 (en) * | 2002-06-26 | 2004-08-09 | 엘지.필립스디스플레이(주) | Panel for crt |
| CN100339931C (en) * | 2000-09-26 | 2007-09-26 | Lg电子株式会社 | Cathode-ray tube |
| US7329981B2 (en) | 2002-11-21 | 2008-02-12 | Kabushiki Kaisha Toshiba | Optical filter and display apparatus with the same |
-
1998
- 1998-03-26 JP JP10016498A patent/JPH11283530A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000044029A1 (en) * | 1999-01-25 | 2000-07-27 | Asahi Glass Company, Limited | Crt panel glass and production method thereof and crt |
| US6586871B1 (en) | 1999-01-25 | 2003-07-01 | Asahi Glass Company, Limited | CRT panel glass and production method thereof and CRT |
| US6683404B2 (en) | 1999-01-25 | 2004-01-27 | Asahi Glass Company, Limited | CRT panel glass and production method thereof and CRT |
| US6770344B2 (en) | 2000-03-22 | 2004-08-03 | Asahi Glass Company, Limited | Functional laminated film, its production process and CRT having said film attached thereto |
| EP1176622A2 (en) * | 2000-07-24 | 2002-01-30 | Matsushita Electric Industrial Co., Ltd. | Cathode ray tube and method for manufacturing the same |
| WO2002009136A1 (en) * | 2000-07-24 | 2002-01-31 | Asahi Glass Company, Limited | Panel glass for crt, crt, and method for producing them |
| EP1176622A3 (en) * | 2000-07-24 | 2002-09-04 | Matsushita Electric Industrial Co., Ltd. | Cathode ray tube and method for manufacturing the same |
| US6509684B2 (en) | 2000-07-24 | 2003-01-21 | Asahi Glass Company, Limited | CRT panel glass and CRT, and their production methods |
| US6856082B2 (en) | 2000-07-24 | 2005-02-15 | Matsushita Electric Industrial Co., Ltd. | Cathode ray tube with panel provided with colored layer |
| CN100339931C (en) * | 2000-09-26 | 2007-09-26 | Lg电子株式会社 | Cathode-ray tube |
| KR100443611B1 (en) * | 2002-06-26 | 2004-08-09 | 엘지.필립스디스플레이(주) | Panel for crt |
| US7329981B2 (en) | 2002-11-21 | 2008-02-12 | Kabushiki Kaisha Toshiba | Optical filter and display apparatus with the same |
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