JPH0855592A - Anode base - Google Patents
Anode baseInfo
- Publication number
- JPH0855592A JPH0855592A JP19059094A JP19059094A JPH0855592A JP H0855592 A JPH0855592 A JP H0855592A JP 19059094 A JP19059094 A JP 19059094A JP 19059094 A JP19059094 A JP 19059094A JP H0855592 A JPH0855592 A JP H0855592A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- anode
- sulfide
- phosphor layer
- sulfide phosphor
- 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
Landscapes
- Luminescent Compositions (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、陰極から放出された電
子の射突を受けて発光する蛍光体を備えた陽極基板に関
する。本発明が対象とする陽極基板は、蛍光表示管、電
界放出形陰極を使用した表示装置、光プリンタ用のプリ
ントヘッド等において構成部材の一部分として用いるこ
とができる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anode substrate provided with a fluorescent material which emits light by being bombarded with electrons emitted from a cathode. The anode substrate targeted by the present invention can be used as a part of a constituent member in a fluorescent display tube, a display device using a field emission type cathode, a print head for an optical printer, or the like.
【０００２】[0002]
【従来の技術】蛍光表示管等の外囲器の一部である陽極
基板は、その内面に陽極が設けられている。陽極は、陽
極導体と陽極導体に被着された蛍光体からなり、該蛍光
体は外囲器内の陰極から放出された電子の射突を受けて
発光するようになっている。2. Description of the Related Art An anode substrate, which is a part of an envelope such as a fluorescent display tube, has an anode provided on its inner surface. The anode is composed of an anode conductor and a fluorescent material adhered to the anode conductor, and the fluorescent material emits light upon being bombarded with electrons emitted from the cathode in the envelope.
【０００３】特願昭６１−１６４４５１号（特開昭６３
−１９７３７号）には、前記陽極の蛍光体層として、低
速電子線で発光する蛍光体を２層に形成した構造のもの
が記載されている。この発明においては、紫外線を受け
て可視光線を発光する紫外線励起可視光発光蛍光体を陽
極基板上の陽極導体の上に設け、電子線の射突によって
紫外線を放出する電子線励起紫外線放射蛍光体をその上
に積層させている。Japanese Patent Application No. 61-164451
No. 19737) describes a structure in which a phosphor that emits light with a low-speed electron beam is formed in two layers as the phosphor layer of the anode. In the present invention, an ultraviolet ray-excited visible light-emitting phosphor that emits visible light upon receiving ultraviolet rays is provided on an anode conductor on an anode substrate, and an electron beam-excited ultraviolet ray emission phosphor that emits ultraviolet rays by electron beam bombardment. Is stacked on top of it.
【０００４】[0004]
【発明が解決しようとする課題】低速電子線の射突によ
って紫外線を放出する蛍光体としては、ＺｎＧａ2 Ｏ4
系の蛍光体以外には発光効率のよいものが少ないという
問題があった。ZnGa 2 O 4 is used as a phosphor that emits ultraviolet rays by bombardment with a low-speed electron beam.
There is a problem that there are few materials having good luminous efficiency other than the system phosphors.
【０００５】本発明は、前記２層構造の蛍光体層を有す
る陽極基板の改良に関するものであり、低速電子線によ
って励起発光する発光効率のよい蛍光体と、紫外線だけ
でなく可視光線によっても励起されて可視光線を放出す
る蛍光体を用いた２層構造の蛍光体層を有する陽極基板
を提供することを目的としている。The present invention relates to an improvement of an anode substrate having a phosphor layer having the above-mentioned two-layer structure. The phosphor has a high luminous efficiency and is excited by a low-speed electron beam to emit light, and it is excited not only by ultraviolet rays but also by visible rays. It is an object of the present invention to provide an anode substrate having a two-layer structure phosphor layer using a phosphor that emits visible light.
【０００６】[0006]
【課題を解決するための手段】請求項１に記載された陽
極基板は、絶縁性の基板と、該基板上に配設された陽極
導体と、該陽極導体上に設けられて陰極から放出される
電子の射突を受けて発光する蛍光体層とを有する陽極基
板において、前記蛍光体層が、前記陽極導体上に設けら
れた硫化物蛍光体層と、該硫化物蛍光体層の少なくとも
上面を被覆して低速電子線の射突によって発光する非硫
化物蛍光体層とから構成されることを特徴としている。An anode substrate according to claim 1 is an insulating substrate, an anode conductor provided on the substrate, and an anode conductor provided on the anode conductor and emitted from a cathode. In an anode substrate having a phosphor layer that emits light by being bombarded with electrons, the phosphor layer is a sulfide phosphor layer provided on the anode conductor, and at least an upper surface of the sulfide phosphor layer. And a non-sulphide phosphor layer that emits light by being bombarded with a low-speed electron beam.
【０００７】請求項２に記載された陽極基板は、請求項
１記載の陽極基板において、前記非硫化物蛍光体層がＺ
ｎＯ：Ｚｎ蛍光体からなることを特徴としている。According to a second aspect of the present invention, in the anode substrate according to the first aspect, the non-sulfide phosphor layer is Z.
It is characterized by being made of nO: Zn phosphor.
【０００８】請求項３に記載された陽極基板は、請求項
１又は２記載の陽極基板において、前記硫化物蛍光体層
が（Ｚｎx Ｃｄ1-x ）Ｓ：Ａｇ，Ｃｌ（但しｘ＝０．１
〜０．５）であることを特徴としている。The anode substrate according to claim 3 is the same as the anode substrate according to claim 1 or 2, wherein the sulfide phosphor layer is (Zn x Cd 1-x ) S: Ag, Cl (where x = 0. .1
.About.0.5).
【０００９】請求項４に記載された陽極基板は、請求項
１、２又は３記載の陽極基板において、前記非硫化物蛍
光体層の発光スペクトルのピーク波長が、前記硫化物蛍
光体の発光スペクトルのピーク波長よりも短波側にある
ことを特徴としている。The anode substrate according to claim 4 is the anode substrate according to claim 1, 2 or 3, wherein the peak wavelength of the emission spectrum of the non-sulfide phosphor layer is the emission spectrum of the sulfide phosphor. It is characterized in that it is on the short-wave side of the peak wavelength of.
【００１０】[0010]
【作用】非硫化物蛍光体層が低速電子線の射突を受けて
発する光の中の短波長成分が、その下にある硫化物蛍光
体層を励起させてそれよりも波長の長い可視光線を放出
させる。[Function] The short-wavelength component of the light emitted by the non-sulfide phosphor layer when it is bombarded with a low-speed electron beam excites the underlying sulfide phosphor layer to cause visible light with a longer wavelength than that. To release.
【００１１】[0011]
【実施例】本願発明の発明者は、前記目的を達成すべく
多くの実験を行い、その結果硫化物蛍光体は紫外線のみ
ならず紫外線に近い比較的短い波長の可視光線によって
も励起発光することを見いだした。以下、図１から図１
２を参照して説明する本発明の各実施例は、陽極基板の
陽極導体上に硫化物蛍光体層を設け、低速電子線の射突
によって紫外線に近い波長で発光する非硫化物蛍光体層
を該硫化物蛍光体層の上に設けた陽極基板に関する。各
実施例の陽極基板は、蛍光表示管の外囲器の一部を構成
する部材として利用できる。EXAMPLES The inventor of the present invention conducted many experiments to achieve the above-mentioned object, and as a result, the sulfide phosphor was excited and emitted not only by ultraviolet rays but also by visible light of a relatively short wavelength close to ultraviolet rays. I found it. Hereinafter, FIG. 1 to FIG.
In each of the embodiments of the present invention described with reference to No. 2, a sulfide phosphor layer is provided on an anode conductor of an anode substrate, and a non-sulfide phosphor layer that emits light at a wavelength close to ultraviolet rays by being bombarded with a low-speed electron beam. Relates to an anode substrate provided on the sulfide phosphor layer. The anode substrate of each example can be used as a member forming a part of the envelope of the fluorescent display tube.
【００１２】図１に示す第１実施例の陽極基板１は、陽
極基板１の外面側から内面側の発光部分を観察する前面
発光形蛍光表示管の外囲器に用いられる。絶縁性の基板
であるガラス製の基板２の内面には陽極導体３が形成さ
れている。陽極導体３は、アルミニウム薄膜をフォトリ
ソグラフィ法によってストライプ状又はメッシュ状の間
隙を有するパターンに形成したものである。図示しない
が、基板２の上には、陽極導体３に接続して配線導体が
形成されている。The anode substrate 1 of the first embodiment shown in FIG. 1 is used as an envelope of a front emission type fluorescent display tube for observing a light emitting portion from the outer surface side to the inner surface side of the anode substrate 1. An anode conductor 3 is formed on the inner surface of a glass substrate 2 which is an insulating substrate. The anode conductor 3 is formed by forming an aluminum thin film into a pattern having stripe-shaped or mesh-shaped gaps by a photolithography method. Although not shown, a wiring conductor is formed on the substrate 2 so as to be connected to the anode conductor 3.
【００１３】基板２上の陽極導体３以外の部分には、黒
色絶縁層４が被着されている。黒色絶縁層４は前記配線
導体を保護し、陽極基板１の内面側からの不要光を遮
る。A black insulating layer 4 is deposited on a portion of the substrate 2 other than the anode conductor 3. The black insulating layer 4 protects the wiring conductor and blocks unnecessary light from the inner surface side of the anode substrate 1.
【００１４】前記陽極導体３の上には、硫化物蛍光体で
ある（Ｚｎx Ｃｄ1-x ）Ｓ：Ａｇ，Ｃｌ（但しｘ＝０．
１〜０．５）蛍光体５が設けられている。本実施例で
は、ｘ＝０．２２とし、黄色から橙色の比較的長波長の
光を放出する硫化物蛍光体とした。この硫化物蛍光体５
にはＩｎ2 Ｏ3 等の導電性物質を１０％以下の量だけ混
合し、抵抗を小さくしてもよい。On the anode conductor 3, a sulfide phosphor (Zn x Cd 1-x ) S: Ag, Cl (where x = 0.
1 to 0.5) A phosphor 5 is provided. In the present embodiment, x = 0.22, and a sulfide phosphor emitting yellow to orange light having a relatively long wavelength is used. This sulfide phosphor 5
For example, a conductive substance such as In 2 O 3 may be mixed in an amount of 10% or less to reduce the resistance.
【００１５】前記硫化物蛍光体５をペースト状にし、ス
クリーン印刷法によって陽極導体３上に層状に被着す
る。これを乾燥させてペースト中の有機溶剤を蒸発さ
せ、陽極導体３上に硫化物蛍光体層を固着させる。The sulfide phosphor 5 is formed into a paste and is applied in layers on the anode conductor 3 by a screen printing method. This is dried to evaporate the organic solvent in the paste and fix the sulfide phosphor layer on the anode conductor 3.
【００１６】硫化物蛍光体５の上には、非硫化物蛍光体
６が設けられている。本実施例の非硫化物蛍光体６はＺ
ｎＯ：Ｚｎ蛍光体からなる。非硫化物蛍光体６は少なく
とも硫化物蛍光体５の上面を覆うようにする。非硫化物
蛍光体６は、非硫化物蛍光体６を含む蛍光体ペーストを
硫化物蛍光体５の上に印刷し、これを乾燥させ、焼成し
て硫化物蛍光体５に固着させて製造する。A non-sulphide phosphor 6 is provided on the sulphide phosphor 5. The non-sulfide phosphor 6 of this embodiment is Z
It consists of nO: Zn phosphor. The non-sulphide phosphor 6 covers at least the upper surface of the sulphide phosphor 5. The non-sulphide phosphor 6 is manufactured by printing a phosphor paste containing the non-sulphide phosphor 6 on the sulphide phosphor 5, drying and firing the paste to fix it to the sulphide phosphor 5. .
【００１７】本実施例の陽極基板１を前面発光形の蛍光
表示管の外囲器に組み込み、前面側から発光強度等を測
定・観察する。図１中に示すように、発光色はＣＩＥ色
度座標がｘ＝０．３９４，ｙ＝０．５２６の黄緑であ
り、輝度は６３７ｃｄ／ｍ2 である。The anode substrate 1 of this embodiment is incorporated in an envelope of a front emission type fluorescent display tube, and the emission intensity and the like are measured and observed from the front side. As shown in FIG. 1, the emission color is yellow green with CIE chromaticity coordinates of x = 0.394 and y = 0.526, and the luminance is 637 cd / m 2 .
【００１８】前記硫化物蛍光体５の発光スペクトルと、
前記非硫化物蛍光体６の発光スペクトルと、前記硫化物
蛍光体５と前記非硫化物蛍光体６を積層した本実施例に
おいて非硫化物蛍光体６側から観察した発光スペクトル
を、それぞれ図９中に示した。２層構造の本実施例で
は、非硫化物蛍光体６であるＺｎＯ：Ｚｎ蛍光体単独の
場合に比べて赤の成分が大きく増えている。２層構造の
本実施例では、低速電子線が射突してＺｎＯ：Ｚｎ蛍光
体からは約４００ｎｍ〜７００ｎｍの光が放出される。
しかしながら、この光の内のおよそ６００ｎｍ以下の短
波光は、硫化物蛍光体５である（Ｚｎ0 。22 Ｃ
ｄ0.78）Ｓ：Ａｇ，Ｃｌ蛍光体に吸収されて発光強度が
落ちる。その一方で該短波光は（Ｚｎ0 。22 Ｃ
ｄ0.78）Ｓ：Ａｇ，Ｃｌ蛍光体を光励起して６５０ｎｍ
付近にピークを有する赤色光を放出させ、全体として赤
色の成分を増加させていると考えられる。The emission spectrum of the sulfide phosphor 5,
The emission spectrum of the non-sulfide phosphor 6 and the emission spectrum observed from the non-sulfide phosphor 6 side in the present example in which the sulfide phosphor 5 and the non-sulfide phosphor 6 are laminated are shown in FIG. Shown inside. In this example having a two-layer structure, the red component is greatly increased as compared with the case where only the ZnO: Zn phosphor which is the non-sulfide phosphor 6 is used. In this embodiment, which has a two-layer structure, a low-speed electron beam impinges on the ZnO: Zn phosphor to emit light of about 400 nm to 700 nm.
However, short light approximately 600nm following among the light is sulfide phosphor 5 (Zn 0. 22 C
d 0.78 ) S: Ag, Cl is absorbed by the phosphor and the emission intensity drops. While the short-wave light (Zn 0. 22 C
d 0.78 ) S: Ag, Cl Phosphor excited to 650 nm
It is considered that red light having a peak in the vicinity is emitted to increase the red component as a whole.
【００１９】本実施例によれば寿命が従来よりも改善さ
れた。陽極基板１を蛍光表示管の外囲器に組み込み、ア
ノード電圧１２０Ｖ、カソード電圧５０Ｖ、デューティ
比１／７０の条件で常温において該蛍光表示管を連続点
灯する。図１１に示すように、点灯時間０時間と７００
時間において、エミッションと陽極電流の２項目を、
（Ｚｎ0.22Ｃｄ0.78）Ｓ：Ａｇ，Ｃｌ蛍光体のみの比較
例と、本実施例とについて比較した。いずれの点灯時間
においても、全ての項目において本実施例の方が優れた
結果を示した。図１２に示すように、その発光輝度につ
いては、全点灯時間において本実施例の方が優れた結果
を示した。According to this embodiment, the life is improved as compared with the conventional one. The anode substrate 1 is incorporated into the envelope of the fluorescent display tube, and the fluorescent display tube is continuously lit at room temperature under the conditions of an anode voltage of 120 V, a cathode voltage of 50 V and a duty ratio of 1/70. As shown in FIG. 11, the lighting time is 0 hours and 700 hours.
In terms of time, two items, emission and anode current,
Comparison was made between the comparative example using only the (Zn 0.22 Cd 0.78 ) S: Ag, Cl phosphor and this example. At any lighting time, the present example showed superior results in all items. As shown in FIG. 12, with respect to the emission luminance, this example showed a superior result over the entire lighting time.
【００２０】図２に示す第２実施例の陽極基板１１は、
陽極基板１１に対面する前面板を介して蛍光体層の発光
を観察する直視形蛍光表示管の外囲器に用いられる。絶
縁性の基板であるガラス製の基板２の内面には陽極導体
７が形成されている。陽極導体７は、黒鉛から構成され
る。基板２の上には、アルミニウム薄膜又は銀厚膜から
なる配線導体８が陽極導体７に接続して形成されてい
る。The anode substrate 11 of the second embodiment shown in FIG.
It is used for the envelope of a direct-view fluorescent display tube for observing the light emission of the phosphor layer through the front plate facing the anode substrate 11. An anode conductor 7 is formed on the inner surface of a glass substrate 2 which is an insulating substrate. The anode conductor 7 is made of graphite. A wiring conductor 8 made of an aluminum thin film or a silver thick film is formed on the substrate 2 so as to be connected to the anode conductor 7.
【００２１】前記陽極導体７の上には、第１実施例と同
じ硫化物蛍光体５と非硫化物蛍光体６が順次積層されて
いる。On the anode conductor 7, the same sulfide phosphor 5 and non-sulfide phosphor 6 as in the first embodiment are sequentially laminated.
【００２２】前記硫化物蛍光体５の発光スペクトルと、
前記非硫化物蛍光体６の発光スペクトルと、前記硫化物
蛍光体５と前記非硫化物蛍光体６を積層した本実施例に
おいて硫化物蛍光体５側から観察した発光スペクトル
を、それぞれ図１０中に示した。本実施例における２層
構造の蛍光体層は、第１実施例に比べると緑色の成分が
多いが、それでもＺｎＯ：Ｚｎ蛍光体単独の蛍光体層に
比べて赤色成分が多くなっている。ＺｎＯ：Ｚｎ蛍光体
の発光スペクトル中の短波成分で励起された（Ｚｎ0.22
Ｃｄ0.78）Ｓ：Ａｇ，Ｃｌ蛍光体の発光成分がＺｎＯ：
Ｚｎ蛍光体の発光スペクトルに上積みされている。寿命
については、第１実施例と同様の結果が得られた。ま
た、この陽極基板１１を有する蛍光表示管に赤色のフィ
ルタを併用すれば、長寿命の赤色発光の直視形蛍光表示
管が得られる。The emission spectrum of the sulfide phosphor 5,
The emission spectrum of the non-sulfide phosphor 6 and the emission spectrum observed from the sulfide phosphor 5 side in the present example in which the sulfide phosphor 5 and the non-sulfide phosphor 6 are laminated are shown in FIG. It was shown to. The two-layer structure phosphor layer in this embodiment has a larger green component than the first embodiment, but still has a larger red component than the ZnO: Zn phosphor alone phosphor layer. Excited by the short-wave component in the emission spectrum of the ZnO: Zn phosphor (Zn 0.22
Cd 0.78 ) S: Ag, Cl The luminescent component of the phosphor is ZnO:
It is added to the emission spectrum of the Zn phosphor. Regarding the life, the same results as in the first embodiment were obtained. Further, by using a red filter together with the fluorescent display tube having the anode substrate 11, a long-life red-light direct-view fluorescent display tube can be obtained.
【００２３】図３に示す第３実施例の陽極基板２１は、
第１実施例の陽極基板１の２層構造の蛍光体層に隣接し
て、ＺｎＯ：Ｚｎ蛍光体のみからなる蛍光体９を設けた
ものである。第１実施例と対応する構成部分には図１と
同一の符号を付して説明を省略する。本実施例によれ
ば、第１実施例と同一の黄緑色の発光と、ＺｎＯ：Ｚｎ
蛍光体による緑色の発光が得られる。ＺｎＯ：Ｚｎ蛍光
体による緑色はＣＩＥ色度座標がｘ＝０．２４、ｙ＝
０．４２であり、輝度は１４１６ｃｄ／ｍ2 である。The anode substrate 21 of the third embodiment shown in FIG.
The phosphor 9 made of only ZnO: Zn phosphor is provided adjacent to the phosphor layer of the two-layer structure of the anode substrate 1 of the first embodiment. The components corresponding to those in the first embodiment are designated by the same reference numerals as those in FIG. 1 and their description is omitted. According to this example, the same yellow-green light emission as in the first example and ZnO: Zn were used.
Green light emission from the phosphor is obtained. The green color of the ZnO: Zn phosphor has CIE chromaticity coordinates of x = 0.24, y =
The brightness is 0.42 and the brightness is 1416 cd / m 2 .
【００２４】図４に示す第４実施例の陽極基板３１は、
第３実施例の陽極基板２１の外面にピンクのフィルタ１
２を設けたものである。第３実施例と対応する構成部分
には図３と同一の符号を付して説明を省略する。本実施
例によれば、２層構造の蛍光体層においてＣＩＥ色度座
標がｘ＝０．５１１、ｙ＝０．４４２の黄橙色で輝度が
２８７ｃｄ／ｍ2 の発光が得られ、またＺｎＯ：Ｚｎ蛍
光体においてＣＩＥ色度座標がｘ＝０．３０８、ｙ＝
０．３５９の白色で輝度が５７７ｃｄ／ｍ2 の発光が得
られる。The anode substrate 31 of the fourth embodiment shown in FIG.
The pink filter 1 is formed on the outer surface of the anode substrate 21 of the third embodiment.
2 is provided. The components corresponding to those in the third embodiment are designated by the same reference numerals as those in FIG. 3 and their description is omitted. According to this example, in the phosphor layer having a two-layer structure, light emission of yellow-orange with CIE chromaticity coordinates of x = 0.511 and y = 0.442 and a brightness of 287 cd / m 2 was obtained, and ZnO: In the Zn phosphor, the CIE chromaticity coordinates are x = 0.308, y =
A white emission of 0.359 and a luminance of 577 cd / m 2 are obtained.
【００２５】図５に示す第５実施例の陽極基板４１は、
第３実施例の陽極基板２１において、２層構造の蛍光体
５，６と基板２の間に、赤色のラスタフィルタ１３を設
けたものである。第３実施例と対応する構成部分には図
３と同一の符号を付して説明を省略する。本実施例によ
れば、２層構造の蛍光体５，６の層においてＣＩＥ色度
座標がｘ＝０．６３６、ｙ＝０．３４１の赤色で輝度が
７８ｃｄ／ｍ2 の発光が得られ、またＺｎＯ：Ｚｎ蛍光
体９においてＣＩＥ色度座標がｘ＝０．２４、ｙ＝０．
４２の緑色で輝度が１４１６ｃｄ／ｍ2 の発光が得られ
る。The anode substrate 41 of the fifth embodiment shown in FIG.
In the anode substrate 21 of the third embodiment, a red raster filter 13 is provided between the phosphors 5 and 6 having a two-layer structure and the substrate 2. The components corresponding to those in the third embodiment are designated by the same reference numerals as those in FIG. 3 and their description is omitted. According to this example, in the layers of the phosphors 5 and 6 having the two-layer structure, red light having CIE chromaticity coordinates of x = 0.636 and y = 0.341 and luminance of 78 cd / m 2 was obtained. Further, in the ZnO: Zn phosphor 9, the CIE chromaticity coordinates are x = 0.24, y = 0.
42 green light having a luminance of 1416 cd / m 2 is obtained.
【００２６】図６に示す第６実施例の陽極基板５１は、
陽極基板の外面側から内面側の発光部分を観察する前面
発光形蛍光表示管の外囲器に用いられる。絶縁性の基板
であるガラス製の基板２の内面には陽極導体３が形成さ
れている。陽極導体３は、アルミニウム薄膜をフォトリ
ソグラフィ法によってストライプ状又はメッシュ状の間
隙を有するパターンに形成したものである。図示しない
が、基板２の上には、陽極導体に接続して配線導体が形
成されている。The anode substrate 51 of the sixth embodiment shown in FIG.
It is used for the envelope of a front emission type fluorescent display tube for observing the light emitting portion from the outer surface side to the inner surface side of the anode substrate. An anode conductor 3 is formed on the inner surface of a glass substrate 2 which is an insulating substrate. The anode conductor 3 is formed by forming an aluminum thin film into a pattern having stripe-shaped or mesh-shaped gaps by a photolithography method. Although not shown, a wiring conductor is formed on the substrate 2 so as to be connected to the anode conductor.
【００２７】基板２上の陽極導体３以外の部分には、黒
色絶縁層４が被着されている。黒色絶縁層４は前記配線
導体を保護し、陽極基板５１の内面側からの不要光を遮
る。A black insulating layer 4 is deposited on a portion of the substrate 2 other than the anode conductor 3. The black insulating layer 4 protects the wiring conductor and blocks unnecessary light from the inner surface side of the anode substrate 51.
【００２８】基板２上で互いに隣接する陽極導体３の上
には、赤・緑・青の各色のラスタフィルタ１３，１４，
１５が設けられている。赤のラスタフィルタ１３の上方
には第１実施例と同様の２層構造の蛍光体５，６の層が
形成されている。また、緑のラスタフィルタ１４の上方
にはＺｎＯ：Ｚｎ蛍光体９が設けられている。また、青
のラスタフィルタ１５の上方には、ＺｎＯ蛍光体９から
なる蛍光体層が形成されている。On the anode conductors 3 which are adjacent to each other on the substrate 2, the raster filters 13, 14,
15 are provided. Above the red raster filter 13, layers of phosphors 5 and 6 having a two-layer structure similar to the first embodiment are formed. A ZnO: Zn phosphor 9 is provided above the green raster filter 14. A phosphor layer made of ZnO phosphor 9 is formed above the blue raster filter 15.
【００２９】本実施例によれば、図６中に示すように隣
接する３個の蛍光体層から赤・緑・青の各色の発光を得
ることができる。このような赤・緑・青の各色の光を放
出する各蛍光体層の組で画素を構成すれば、係る画素を
複数個集合させることによって任意の色彩の画像表示を
行うことができる。According to the present embodiment, as shown in FIG. 6, it is possible to obtain light emission of each color of red, green and blue from three adjacent phosphor layers. If a pixel is composed of a set of phosphor layers that emit light of each color of red, green, and blue, an image of an arbitrary color can be displayed by collecting a plurality of such pixels.
【００３０】図７に示す第７実施例の陽極基板６１は、
第５実施例の陽極基板４１において、ＺｎＯ蛍光体９と
基板２の間に、青色のラスタフィルタ１５を設けたもの
である。第５実施例と対応する構成部分には図５と同一
の符号を付して説明を省略する。本実施例によれば、２
層構造の蛍光体層においてＣＩＥ色度座標がｘ＝０．６
３６、ｙ＝０．３４１の赤色で輝度が７８ｃｄ／ｍ2 の
発光が得られ、またＺｎＯ：Ｚｎ蛍光体においてＣＩＥ
色度座標がｘ＝０．２、ｙ＝０．３６の青緑色で輝度が
４２５ｃｄ／ｍ2 の発光が得られる。The anode substrate 61 of the seventh embodiment shown in FIG.
In the anode substrate 41 of the fifth embodiment, the blue raster filter 15 is provided between the ZnO phosphor 9 and the substrate 2. The components corresponding to those in the fifth embodiment are designated by the same reference numerals as those in FIG. 5 and their description is omitted. According to this embodiment, 2
In the phosphor layer having a layered structure, CIE chromaticity coordinates are x = 0.6.
36, y = 0.341, red light with a luminance of 78 cd / m 2 was obtained, and CIE was observed in the ZnO: Zn phosphor.
Light emission of blue-green with chromaticity coordinates of x = 0.2 and y = 0.36 and a luminance of 425 cd / m 2 can be obtained.
【００３１】[0031]
【発明の効果】本発明の陽極基板の蛍光体層は、陽極導
体上に設けた硫化物蛍光体層と、硫化物蛍光体層を被覆
して低速電子線の射突によって発光する非硫化物蛍光体
層とを有しているので、非硫化物蛍光体層が低速電子線
の射突を受けて発する光の中の短波長成分が、その下に
ある硫化物蛍光体層を励起させてそれよりも波長の長い
可視光線を放出させることができる。As the phosphor layer of the anode substrate of the present invention, the sulfide phosphor layer provided on the anode conductor and the non-sulfide that covers the sulfide phosphor layer and emits light by the bombardment of the low-speed electron beam. Since it has a phosphor layer, the short-wavelength component of the light emitted by the non-sulfide phosphor layer when it is hit by a low-speed electron beam excites the sulfide phosphor layer therebelow. Visible light having a longer wavelength than that can be emitted.
【００３２】即ち、硫化物蛍光体を硫化物系ガスを飛散
させることなく発光させることができ、このような陽極
基板を用いた発光装置の寿命を改善することができた。That is, the sulfide phosphor can emit light without scattering the sulfide-based gas, and the life of the light emitting device using such an anode substrate can be improved.
【００３３】さらに、硫化物蛍光体の発光色のなかで
も、特に従来は赤色の発光効率が低かったが、本発明に
よれば赤色成分の多い発光を得ることができ、フィルタ
等の手段を併用すれば色純度の良い赤色光を取り出すこ
とができる。また、赤色を含む複数色を用いてカラーの
グラフィック表示を行うこともできる。Further, among the luminescent colors of the sulfide phosphor, the red light emission efficiency has been particularly low in the past, but according to the present invention, light emission with a large red component can be obtained, and a means such as a filter is also used. If so, red light with good color purity can be extracted. Further, color graphic display can be performed using a plurality of colors including red.
【図１】第１実施例の陽極基板の断面図である。FIG. 1 is a sectional view of an anode substrate according to a first embodiment.
【図２】第２実施例の陽極基板の断面図である。FIG. 2 is a sectional view of an anode substrate according to a second embodiment.
【図３】第３実施例の陽極基板の断面図である。FIG. 3 is a sectional view of an anode substrate according to a third embodiment.
【図４】第４実施例の陽極基板の断面図である。FIG. 4 is a sectional view of an anode substrate according to a fourth embodiment.
【図５】第５実施例の陽極基板の断面図である。FIG. 5 is a sectional view of an anode substrate according to a fifth embodiment.
【図６】第６実施例の陽極基板の断面図である。FIG. 6 is a sectional view of an anode substrate according to a sixth embodiment.
【図７】第７実施例の陽極基板の断面図である。FIG. 7 is a sectional view of an anode substrate according to a seventh embodiment.
【図８】第１実施例における陽極基板の蛍光体層の発光
スペクトルを示す図である。FIG. 8 is a diagram showing an emission spectrum of a phosphor layer of the anode substrate in the first example.
【図９】第２実施例における陽極基板の蛍光体層の発光
スペクトルを示す図である。FIG. 9 is a diagram showing an emission spectrum of a phosphor layer of an anode substrate in a second example.
【図１０】第１実施例の陽極基板を用いた蛍光表示管の
性能試験の結果を示す表図である。FIG. 10 is a table showing the results of a performance test of a fluorescent display tube using the anode substrate of the first embodiment.
【図１１】第１実施例の陽極基板を用いた蛍光表示管の
性能試験の結果を示すグラフである。FIG. 11 is a graph showing the results of a performance test of a fluorescent display tube using the anode substrate of the first embodiment.
１，２１，３１，４１，５１，６１，７１ 陽極基板 ２ 基板 ３ 陽極導体 ５ 硫化物蛍光体である（Ｚｎx Ｃｄ1-x ）Ｓ：Ａｇ，
Ｃｌ（但しｘ＝０．１〜０．５） ９ 非硫化物蛍光体であるＺｎＯ：Ｚｎ ２２ 硫化物蛍光体であるＺｎＳ：Ａｇ，Ｃｌ ２３ 硫化物蛍光体であるＺｎＳ：Ｃｕ，Ａｌ1, 21, 31, 41, 51, 61, 71 Anode substrate 2 Substrate 3 Anode conductor 5 Sulfide phosphor (Zn x Cd 1-x ) S: Ag,
Cl (however, x = 0.1-0.5) 9 ZnO: Zn22 which is a non-sulfide fluorescent substance ZnS: Ag, Cl23 which is a sulfide fluorescent substance ZnS: Cu, Al which is a sulfide fluorescent substance
Claims (4)
陽極導体と、該陽極導体上に設けられて陰極から放出さ
れる電子の射突を受けて発光する蛍光体層とを有する陽
極基板において、前記蛍光体層が、前記陽極導体上に設
けられた硫化物蛍光体層と、該硫化物蛍光体層の少なく
とも上面を被覆して低速電子線の射突によって発光する
非硫化物蛍光体層とから構成されることを特徴とする陽
極基板。1. An insulating substrate, an anode conductor provided on the substrate, and a phosphor layer which is provided on the anode conductor and emits light by being bombarded with electrons emitted from a cathode. In the anode substrate having the non-sulfurized phosphor layer, wherein the phosphor layer covers the sulfide phosphor layer provided on the anode conductor and at least the upper surface of the sulfide phosphor layer and emits light by a low-speed electron beam bombardment. An anode substrate comprising a phosphor layer.
光体からなる請求項１記載の陽極基板。2. The anode substrate according to claim 1, wherein the non-sulfide phosphor layer is made of ZnO: Zn phosphor.
ｄ1-x ）Ｓ：Ａｇ，Ｃｌ（但しｘ＝０．１〜０．５）で
ある請求項１又は２記載の陽極基板。3. The sulfide phosphor layer comprises (Zn x C
The anode substrate according to claim 1, wherein d 1-x ) S: Ag, Cl (where x = 0.1 to 0.5).
のピーク波長が、前記硫化物蛍光体の発光スペクトルの
ピーク波長よりも短波側にある請求項１、２又は３記載
の陽極基板。4. The anode substrate according to claim 1, 2 or 3, wherein the peak wavelength of the emission spectrum of the non-sulfide phosphor layer is on the shorter wave side than the peak wavelength of the emission spectrum of the sulfide phosphor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19059094A JP2921402B2 (en) | 1994-08-12 | 1994-08-12 | Anode substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19059094A JP2921402B2 (en) | 1994-08-12 | 1994-08-12 | Anode substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0855592A true JPH0855592A (en) | 1996-02-27 |
| JP2921402B2 JP2921402B2 (en) | 1999-07-19 |
Family
ID=16260605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19059094A Expired - Fee Related JP2921402B2 (en) | 1994-08-12 | 1994-08-12 | Anode substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2921402B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2800509A1 (en) * | 1999-11-01 | 2001-05-04 | Samsung Sdi Co Ltd | Highly luminous screen includes luminous material emitting preset color and zinc-zinc oxide luminophor reinforcing luminosity of display |
| JP2002120394A (en) * | 2000-10-16 | 2002-04-23 | Futaba Corp | Electron beam excited light emission type print head |
| JP2002298769A (en) * | 2001-03-30 | 2002-10-11 | Noritake Co Ltd | Fluorescent display tube |
| KR100385742B1 (en) * | 1999-10-04 | 2003-05-28 | 후다바 덴시 고교 가부시키가이샤 | Phosphor and fluorescent display device |
| JP2006140001A (en) * | 2004-11-11 | 2006-06-01 | Futaba Corp | Fluorescent display tube |
-
1994
- 1994-08-12 JP JP19059094A patent/JP2921402B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100385742B1 (en) * | 1999-10-04 | 2003-05-28 | 후다바 덴시 고교 가부시키가이샤 | Phosphor and fluorescent display device |
| FR2800509A1 (en) * | 1999-11-01 | 2001-05-04 | Samsung Sdi Co Ltd | Highly luminous screen includes luminous material emitting preset color and zinc-zinc oxide luminophor reinforcing luminosity of display |
| KR20010044907A (en) * | 1999-11-01 | 2001-06-05 | 김순택 | Phosphor screen representing high brightness in a low voltage and manufacturing method thereof |
| US6919683B1 (en) | 1999-11-01 | 2005-07-19 | Samsung Sdi Co., Ltd. | High-brightness phosphor screen and method for manufacturing the same |
| JP2002120394A (en) * | 2000-10-16 | 2002-04-23 | Futaba Corp | Electron beam excited light emission type print head |
| JP2002298769A (en) * | 2001-03-30 | 2002-10-11 | Noritake Co Ltd | Fluorescent display tube |
| JP2006140001A (en) * | 2004-11-11 | 2006-06-01 | Futaba Corp | Fluorescent display tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2921402B2 (en) | 1999-07-19 |
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