JPS636982B2 - - Google Patents
Info
- Publication number
- JPS636982B2 JPS636982B2 JP23160184A JP23160184A JPS636982B2 JP S636982 B2 JPS636982 B2 JP S636982B2 JP 23160184 A JP23160184 A JP 23160184A JP 23160184 A JP23160184 A JP 23160184A JP S636982 B2 JPS636982 B2 JP S636982B2
- Authority
- JP
- Japan
- Prior art keywords
- cathode ray
- light
- weight
- ray tube
- green
- 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.)
- Expired
Links
- 229910017493 Nd 2 O 3 Inorganic materials 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 15
- 238000010894 electron beam technology Methods 0.000 claims description 7
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 10
- 238000002834 transmittance Methods 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- -1 Pr 2 O 3 Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium oxide Inorganic materials [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J63/00—Cathode-ray or electron-stream lamps
- H01J63/06—Lamps with luminescent screen excited by the ray or stream
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Description
【発明の詳細な説明】
この発明は、多数の陰極線管を画素として配列
した表示装置に用いる光源用陰極線管に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cathode ray tube for a light source used in a display device in which a large number of cathode ray tubes are arranged as pixels.
従来、たとえば競技場の電光表示板、建物の屋
上や壁面の広告用画像、メツセージ、道路のイン
フオメーシヨン用デイスプレイなどに使われる巨
大表示装置は、多数の電球を並べてこれを選択的
に点滅することによつて画像を形成している。 Traditionally, giant display devices used for electronic display boards in stadiums, advertising images on building roofs and walls, messages, road information displays, etc. are made by arranging a large number of light bulbs and selectively blinking them. In particular, images are formed.
このような電球方式では、電球のフイラメント
の赤熱によつて光を得ているために、主としてそ
の発光が橙ないし白橙色を呈している。このた
め、これらの電球からたとえば青や緑の色光を大
量に発生させることはかなり困難であつた。ま
た、各画素の輝度を変調するには、フイラメント
の印加電流をON−OFFするか、印加電流を可変
するなどの手段を要するが、これらの電球の周波
数レスポンスが通常10Hz以下ときわめて低く、印
加電流によつて発光色自体が変つてしまう問題が
あり、中間色調の表示や任意の色光を含成するカ
ラー表示などには不適であつた。さらに、このよ
うな巨大表示装置では、一般に20〜40W程度の電
球を数千個から数万個以上も必要とする場合あ
り、その消費電力や発熱などの点で多くの問題が
あつた。 In this type of light bulb, the light is obtained by the red heat of the filament of the light bulb, so the light emitted mainly has an orange or white-orange color. For this reason, it has been quite difficult to generate a large amount of colored light, such as blue or green, from these light bulbs. Furthermore, in order to modulate the brightness of each pixel, it is necessary to turn the applied current to the filament on and off or to vary the applied current, but the frequency response of these light bulbs is usually extremely low, less than 10 Hz, There is a problem in that the color of the emitted light itself changes due to the electric current, making it unsuitable for displaying intermediate tones or color displays containing arbitrary colored light. Furthermore, such huge display devices generally require thousands to tens of thousands or more of light bulbs of about 20 to 40 W, which poses many problems in terms of power consumption and heat generation.
そこで、この発明者らは上述したような巨大表
示装置の単位光源として、陰極線管を用いること
を先に提案している。これは、たとえば赤、緑、
青などの単色螢光面を持つ小形の陰極線管を多数
配列して所望の画像を表示するもので、これによ
れば電気エネルギを光エネルギに変換する変換効
率が電球にくらべて大巾に改善されるのみなら
ず、使用螢光体の選択によつて任意の発光色の光
源が得られるなどの多くの利点がある。したがつ
て、従来の電球方式に対して性能、信頼性、維持
費、消費電力などのいづれを比較しても有利であ
る。 Therefore, the inventors have previously proposed the use of a cathode ray tube as a unit light source for the giant display device as described above. This means, for example, red, green,
A large number of small cathode ray tubes with monochromatic fluorescent surfaces such as blue are arranged to display a desired image, and the conversion efficiency of converting electrical energy into light energy is greatly improved compared to light bulbs. It has many advantages, such as being able to emit light of any color by selecting the phosphor used. Therefore, it is advantageous when compared with conventional light bulb systems in terms of performance, reliability, maintenance costs, power consumption, etc.
第１図は、巨大表示装置の光源として使用され
る上記陰極線管の一例を示す（たとえば、特開昭
56−32661号公報、特開昭57−196471号公報参
照）。図中、１は管内を真空に維持するための、
たとえば筒状を呈する真空外囲器である。この真
空外囲器１は、その一端の内面に単色螢光面２が
被着されたフエースガラス３を有し、他端には上
記螢光面２の全面を非集束電子ビーム１０で照射
するための電子銃４ならびに電子銃４の各部に所
要の電圧を印加するための端子を持ち、ステム部
５にて閉塞されている。６，７および８は、それ
ぞれ上記電子銃４を構成するヒータ、陰極および
グリツドである。 FIG. 1 shows an example of the above-mentioned cathode ray tube used as a light source for a giant display device (for example,
56-32661, JP-A-57-196471). In the figure, 1 is for maintaining a vacuum inside the tube.
For example, it is a cylindrical vacuum envelope. This vacuum envelope 1 has a face glass 3 on which a monochromatic fluorescent surface 2 is adhered on the inner surface of one end, and the entire surface of the fluorescent surface 2 is irradiated with an unfocused electron beam 10 at the other end. The electron gun 4 has a terminal for applying a required voltage to each part of the electron gun 4, and is closed by a stem portion 5. Reference numerals 6, 7 and 8 denote a heater, a cathode and a grid, respectively, constituting the electron gun 4.
この光源用陰極線管の動作について説明する
と、まず、陰極７に対して負の電圧をグリツド８
に印加するとともにヒータ６に所定の電流を与え
る。これにより、陰極７が加熱されてグリツド８
の電圧を陰極７の電位に近づけると、陰極７から
電子ビーム１０が螢光面２に向かつて発射され
る。この電子ビーム１０は、グリツド８の中央に
設けられた穴９の直径、グリツド８と陰極７との
間隔、および陽極電圧などの諸条件によつて定ま
る所定の拡がりθ1をもつ非集束ビームとなつて螢
光面２の全面に照射され、螢光面２をその螢光体
に応じた発光色に発光させる。 To explain the operation of this light source cathode ray tube, first, a negative voltage is applied to the cathode 7 to the grid 8.
At the same time, a predetermined current is applied to the heater 6. As a result, the cathode 7 is heated and the grid 8 is heated.
When the voltage approaches the potential of the cathode 7, an electron beam 10 is emitted from the cathode 7 toward the fluorescent surface 2. This electron beam 10 is an unfocused beam with a predetermined spread θ 1 determined by various conditions such as the diameter of a hole 9 provided in the center of the grid 8, the distance between the grid 8 and the cathode 7, and the anode voltage. The entire surface of the fluorescent surface 2 is irradiated with light, causing the fluorescent surface 2 to emit light in a color corresponding to the phosphor.
このような光源用陰極線管は、たとえば第２図
で示すように、螢光面を有する側を手前にして規
則正しく並べられる。一般に、この配列は、緑色
に発光する陰極線管１１２本に対して、赤色に発
光する陰極線管１２および青色に発光する陰極線
管１３が各１本となる割合で配列される。これ
は、光源の集合体で構成される画像の鮮明度を支
配する分解能が緑色の画素の数で決まり、赤や青
色は彩色の働きをしているにすぎないということ
に基づいている。この点は、この発明者らによつ
て実際に製作した装置にて確認されている。 Such light source cathode ray tubes are arranged regularly, with the side with the fluorescent surface facing toward you, as shown in FIG. 2, for example. Generally, this arrangement is such that for every 112 cathode ray tubes that emit green light, there is one cathode ray tube 12 that emits red light and one cathode ray tube 13 that emits blue light. This is based on the fact that the resolution that governs the sharpness of an image made up of a collection of light sources is determined by the number of green pixels, and red and blue only serve as coloring. This point has been confirmed by the apparatus actually manufactured by the inventors.
しかしながら、たとえば直径が約29mmである光
源用陰極線管を第２図で示すように配列する場
合、陰極線管に諸電圧を供給するためのソケツト
部分の構成や配線、および屋外使用における防水
構造などを考慮すれば、配列のピツチは40〜45mm
程度となり、最適視認距離は約70ｍ以上となる。
したがつて、野球場のフアンサービス用デイスプ
レイなどの遠距離視認が主となる用途では問題は
ないが、屋外広告などで近距離視認が中心となる
用途では上記視認距離を半分以下とする必要があ
ることが判明している。 However, when arranging light source cathode ray tubes with a diameter of about 29 mm as shown in Figure 2, for example, the configuration and wiring of the socket part for supplying various voltages to the cathode ray tubes, and the waterproof structure for outdoor use, etc. Taking this into account, the pitch of the array is 40-45mm.
The optimum visibility distance is approximately 70m or more.
Therefore, there is no problem in applications where long-distance visibility is the main focus, such as displays for fan services at baseball stadiums, but in applications where close-range visibility is the main focus, such as outdoor advertising, it is necessary to reduce the above visibility distance by half or less. It turns out that there is.
さらに、陰極線管に使用される螢光体は、一般
に体色の白つぽいものが多く、このため、屋外使
用の表示装置に用いたとき、白昼の強い天空光の
照射下では画面が不鮮明となる欠点がある。 Furthermore, the phosphors used in cathode ray tubes generally have a whitish body color, and for this reason, when used in display devices for outdoor use, the screen may become unclear under strong sky light in broad daylight. There is a drawback.
この発明は、上記最適視認距離を大幅に短縮す
る場合に使用して好適で、屋外での強い天空光下
でもコントラストの増大によつて鮮明な画像が得
られる表示装置を実現できる光源用陰極線管を提
供することを目的としている。 The present invention is suitable for use in cases where the above-mentioned optimum viewing distance is significantly shortened, and is capable of realizing a display device that can obtain clear images by increasing contrast even under strong sky light outdoors. is intended to provide.
上記目的を達成するために、この発明の光源用
陰極線管は、フエース部の内面に形成された赤と
緑の２発光色領域に分割された螢光面と、それぞ
れの発光色領域に非集束電子ビームを照射する２
本の電子銃を有し、上記フエース部が３〜10重量
％のNd2O3と、1.5〜5.0重量％のPr2O3と、1.0〜
3.5重量％のFe2O3と、1.0〜3.5重量％のCeO2とを
含有するガラスで構成されていることを特徴とし
ている。 In order to achieve the above object, the cathode ray tube for a light source of the present invention has a fluorescent surface divided into two emission color regions of red and green formed on the inner surface of the face part, and a non-focused light emitting color region in each emission color region. Irradiate electron beam 2
The face part contains 3~10% by weight of Nd2O3 , 1.5~5.0% by weight of Pr2O3 , and 1.0 ~10% by weight of Pr2O3 .
It is characterized by being composed of glass containing 3.5% by weight of Fe 2 O 3 and 1.0 to 3.5% by weight of CeO 2 .
以下、この発明の一実施例を図面にしたがつて
説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第３図は、最適視認距離を短縮できる表示装置
における光源用陰極線管の配列状態を示す。図示
するように、陰極線管は螢光面が赤色Ｒと緑色Ｇ
の２発光色領域に分割されたもの２１、ならびに
青色Ｂと緑色Ｇの２発光色領域に分割されたもの
２２からなつている。 FIG. 3 shows an arrangement of light source cathode ray tubes in a display device that can shorten the optimum viewing distance. As shown in the figure, the cathode ray tube has fluorescent surfaces of red R and green G.
21, which is divided into two emission color areas, and another area 22, which is divided into two emission color areas, blue B and green G.
第４図は、上記陰極線管２１，２２の内部構造
を示す。図において、２３は真空外囲器、２４は
フエース部であり、このフエース部２４の内面に
は異なる発光色の２つの領域からなる螢光面２５
ａ，２５ｂが形成されている。２６ａ，２６ｂ
は、それぞれ上記２領域の螢光面２５ａ，２５ｂ
に対応する拡がりθ2をもつ非集束電子ビーム２７
ａ，２７ｂを照射する電子銃であり、この電子銃
２６ａ，２６ｂ自体の構成は、前記第１図で示す
ものと同様である。また、真空外囲器２３の少な
くともフエース部２４は、陰極線管２１の場合は
３〜10重量％のNd2O3と、1.5〜5.0重量％の
Pr2O3と、1.0〜3.5重量％のFe2O3と、1.0〜3.5重
量％のCeO2とを含有するガラスで構成され、陰
極線管２２の場合は３〜10重量％のNd2O3を含有
するガラスにて構成されている。 FIG. 4 shows the internal structure of the cathode ray tubes 21 and 22. In the figure, 23 is a vacuum envelope, 24 is a face part, and on the inner surface of this face part 24 is a fluorescent surface 25 consisting of two regions of different luminescent colors.
a, 25b are formed. 26a, 26b
are the fluorescent surfaces 25a and 25b of the above two regions, respectively.
An unfocused electron beam 27 with a spread θ 2 corresponding to
The configuration of the electron guns 26a and 26b is the same as that shown in FIG. 1 above. Further, at least the face portion 24 of the vacuum envelope 23 contains 3 to 10% by weight of Nd 2 O 3 and 1.5 to 5.0% by weight in the case of the cathode ray tube 21.
Pr 2 O 3 , 1.0-3.5% by weight of Fe 2 O 3 , 1.0-3.5% by weight of CeO 2 , and in the case of the cathode ray tube 22 3-10% by weight of Nd 2 O It is made of glass containing 3 .
上記Nd2O3は、ガラスの透過率に選択透過特性
を付与するために加えられるものであり、510〜
530mm、570〜585mmの波長域で強い光吸収特性を
有することが特徴である。 The above Nd 2 O 3 is added to impart selective transmission characteristics to the transmittance of the glass, and is 510~
It is characterized by strong light absorption characteristics in the wavelength ranges of 530 mm and 570 to 585 mm.
また、上記Pr2O3は、440mm、469mm、481mmの
波長成分を吸収する特性がある。したがつて、青
色領域の光を制限するのに有効であるが、これら
の波長での吸収は線スペクトルであるため、効果
が十分であるとはいえない。 Further, the Pr 2 O 3 has a characteristic of absorbing wavelength components of 440 mm, 469 mm, and 481 mm. Therefore, it is effective in limiting light in the blue region, but since the absorption at these wavelengths is a line spectrum, it cannot be said that the effect is sufficient.
そこで、青色吸収を強化するために、Fe2O3と
CeO2とが添加される。このFe2O3とCeO2は、共
に短波長側に向うにつれて吸収が強くなる性質を
有するものである。 Therefore, in order to enhance blue absorption, Fe 2 O 3 and
CeO 2 is added. Both Fe 2 O 3 and CeO 2 have the property that absorption becomes stronger toward shorter wavelengths.
上記各物質の含有量を決める要素は、これらの
物質によつてガラスの光学的特性と、ガラスの強
度、加工性等の物理的諸特性に鑑みて決める必要
があり、各含有量はガラスのテストピースを製作
して決定されるものである。 The factors that determine the content of each of the above substances need to be determined based on the optical properties of the glass and the physical properties such as strength and workability of the glass. This is determined by manufacturing a test piece.
上記表示装置では、前記第２図で示す場合と同
じピツチで同じ大きさの陰極線管を配列しても、
単位発光面が小さく、かつ近接するために、画面
の最適視認距離はほぼ半分に短縮される。また、
視覚的に色ずれが最も気になる赤色と青色とを接
近して構成できるため、たとえば黄色などの合成
色の表示性が良くなり、非常に見易い画像を得る
ことができる。 In the above display device, even if cathode ray tubes of the same size and pitch are arranged in the same manner as shown in FIG.
Since the unit light emitting surfaces are small and close to each other, the optimum viewing distance of the screen is reduced by approximately half. Also,
Since red and blue, which are visually most concerned about color shift, can be arranged close to each other, the display performance of composite colors such as yellow is improved, and a very easy-to-see image can be obtained.
また、赤と緑の陰極線管２１に、Nd2O3、
Pr2O3、Fe2O3およびCeO2を上記範囲内で含有さ
せたので、スペクトルの青色の波長成分のみを有
効に吸収できる。したがつて、上記陰極線管２１
において赤色と緑色の透過率が高まり、屋外の巨
大デイスプレイとして用いた場合でも、外来光に
よる光反射率が低減され、コントラストを増大さ
せることができる。 In addition, Nd 2 O 3 ,
Since Pr 2 O 3 , Fe 2 O 3 and CeO 2 are contained within the above range, only the blue wavelength component of the spectrum can be effectively absorbed. Therefore, the cathode ray tube 21
The transmittance of red and green colors is increased, and even when used as a large outdoor display, the light reflectance due to external light is reduced and the contrast can be increased.
さらに、螢光面２５ａ，２５ｂを形成するフエ
ース部２４の構成材料として、上述のように特定
成分を含有するガラスを用いているため、波長選
択性が付与される結果、発光色のコントラストが
増大して鮮明な画像が実現できる。 Furthermore, as the material of the face portion 24 forming the fluorescent surfaces 25a and 25b is glass containing a specific component as described above, wavelength selectivity is imparted, and as a result, the contrast of the emitted light color is increased. A clear image can be achieved.
第５図はカラー陰極線管に使用される通常の赤
（曲線Ｒ）、青（曲線Ｂ）、緑（曲線Ｇ）の各発光
色螢光体の発光特性を示している。これに対し
て、第６図は前記の螢光面が赤色−緑色の２発光
領域からなる陰極線管２１の、第７図は青色−緑
色の２発光色領域からなる陰極線管２２のそれぞ
れフエース部２４のガラス分光透過率を示す。第
６図から、陰極線管２１のフエース部は、第５図
で示す赤色と緑色の必要な発光スペクトルに対応
する波長部分の光透過率がきわめて良好であり、
それ以外の波長部分の光透過率が低いことがわか
る。また、第７図から、陰極線管２２のフエース
部は、第５図で示す青色と緑色の必要な発光スペ
クトルに対応する波長部分の光透過率が良好であ
り、曲線Ｂの長波長側のすそ部分と曲線Ｇの長波
長側に存在するピーク波長の部分の光透過率が低
いことがわかる。したがつて、各発光色のコント
ラストが増大し、白昼の屋外での強い天空光下で
も鮮明な画像が得られる。 FIG. 5 shows the emission characteristics of the usual red (curve R), blue (curve B), and green (curve G) color phosphors used in color cathode ray tubes. On the other hand, FIG. 6 shows the face portion of a cathode ray tube 21 whose fluorescent surface has two light emitting areas of red and green, and FIG. 7 shows the face portion of a cathode ray tube 22 whose fluorescent surface has two light emitting areas of blue and green. The glass spectral transmittance of No. 24 is shown. From FIG. 6, it can be seen that the face portion of the cathode ray tube 21 has extremely good light transmittance in the wavelength portion corresponding to the necessary red and green emission spectra shown in FIG.
It can be seen that the light transmittance at other wavelengths is low. Moreover, from FIG. 7, the face portion of the cathode ray tube 22 has good light transmittance in the wavelength portion corresponding to the necessary blue and green emission spectra shown in FIG. It can be seen that the light transmittance of the peak wavelength portion existing on the long wavelength side of curve G is low. Therefore, the contrast of each luminescent color increases, and a clear image can be obtained even under strong sky light outdoors in broad daylight.
上記赤と緑の陰極線管２１におけるフエース部
２４の各含有成分は、Nd2O3、Pr2O3、Fe2O3、
CeO2を上記範囲内でどのように組み合わせても、
第６図とほぼ同じ結果が得られた。上記範囲外で
はその効果が不十分である。その事実を明らかに
するために、つぎの比較例を示す。 The components contained in the face portion 24 of the red and green cathode ray tubes 21 are Nd 2 O 3 , Pr 2 O 3 , Fe 2 O 3 ,
No matter how you combine CeO 2 within the above range,
Almost the same results as in Figure 6 were obtained. Outside the above range, the effect is insufficient. In order to clarify this fact, the following comparative example is shown.
比較例 １−１
Nd2O3が零で、Pr2O3、Fe2O3、CeO2が上記範
囲内に限定された場合、黄色の波長成分が吸収で
きなくなり、鮮明な画像が得られなかつた。ま
た、Nd2O3の含有量が３重量％未満では、黄色吸
収能力が不十分であつた。Comparative Example 1-1 When Nd 2 O 3 is zero and Pr 2 O 3 , Fe 2 O 3 , and CeO 2 are limited to the above range, yellow wavelength components cannot be absorbed and a clear image cannot be obtained. Nakatsuta. Further, when the content of Nd 2 O 3 was less than 3% by weight, the yellow absorption ability was insufficient.
比較例 １−２
Nd2O3が15重量％で、Pr2O3、Fe2O3、CeO2が
上記範囲内に限定された場合、光吸収が過剰とな
り、画明の明るさが低下したり、波長選択性が不
適当に変化するなどの幣害があつた。Nd2O3の含
有量が10重量％以下では、過剰な光吸収が防が
れ、良好な発光強度を得ることができた。Comparative Example 1-2 When Nd 2 O 3 is 15% by weight and Pr 2 O 3 , Fe 2 O 3 , and CeO 2 are limited to the above ranges, light absorption becomes excessive and the brightness of the image decreases. This caused damage such as inappropriate changes in wavelength selectivity. When the content of Nd 2 O 3 was 10% by weight or less, excessive light absorption was prevented and good emission intensity could be obtained.
比較例 ２−１
Pr2O3が零で、Nd2O3、Fe2O3、CeO2が上記範
囲内に限定された場合、青色領域の一定波長の光
吸収ができなくなつた。また、Pr2O3の含有量が
1.5重量％未満では、上記波長成分の吸収能力が
不十分であつた。Comparative Example 2-1 When Pr 2 O 3 was zero and Nd 2 O 3 , Fe 2 O 3 , and CeO 2 were limited within the above ranges, it became impossible to absorb light at a certain wavelength in the blue region. Also, the content of Pr 2 O 3
When the amount was less than 1.5% by weight, the absorption ability for the above-mentioned wavelength components was insufficient.
比較例 ２−２
Pr2O3が10.0重量％で、Nd2O3、Fe2O3、CeO2
が上記範囲内に限定された場合、ガラスの光学的
特性、および、ガラスの強度、加工性等の物理的
諸特性が低下した。Pr2O3の含有量が5.0重量％以
下では、ガラスの諸特性は良好に保たれた。Comparative Example 2-2 Pr 2 O 3 is 10.0% by weight, Nd 2 O 3 , Fe 2 O 3 , CeO 2
When the amount is limited to within the above range, the optical properties of the glass and physical properties such as strength and workability of the glass deteriorate. When the content of Pr 2 O 3 was 5.0% by weight or less, various properties of the glass were maintained well.
比較例 ３−１
Fe2O3が零で、Nd2O3、Pr2O3、CeO2が上記範
囲内に限定された場合、青色の波長成分の吸収が
できなくなつた。またPr2O3の含有量が1.0重量％
未満では、青色吸収能力が不十分であつた。Comparative Example 3-1 When Fe 2 O 3 was zero and Nd 2 O 3 , Pr 2 O 3 , and CeO 2 were limited to the above ranges, it became impossible to absorb blue wavelength components. In addition, the content of Pr 2 O 3 is 1.0% by weight
If it was less than 20%, the blue absorption ability was insufficient.
比較例 ３−２
Fe2O3が5.0重量％で、Nd2O3、Pr2O3、CeO2が
上記範囲内に限定された場合、ガラスの強度特性
等が悪くなつた。しかも、緑色成分の吸収が過剰
となり、画像の分解能が低下した。Fe2O3の含有
量が3.5重量％以下では、上記のような問題は生
じなかつた。Comparative Example 3-2 When Fe 2 O 3 was 5.0% by weight and Nd 2 O 3 , Pr 2 O 3 , and CeO 2 were limited within the above ranges, the strength characteristics of the glass deteriorated. Moreover, the green component was absorbed excessively, resulting in a decrease in image resolution. When the Fe 2 O 3 content was 3.5% by weight or less, the above problem did not occur.
比較例 ４−１
CeO2が零で、Nd2O3、Pr2O3、Fe2O3が上記範
囲内に限定された場合、青色の波長成分の吸収が
できなくなつた。また、CeO2の含有量が1.0重量
％未満では、青色吸収能力は不十分であつた。Comparative Example 4-1 When CeO 2 was zero and Nd 2 O 3 , Pr 2 O 3 , and Fe 2 O 3 were limited to the above ranges, it became impossible to absorb blue wavelength components. Moreover, when the content of CeO 2 was less than 1.0% by weight, the blue absorption ability was insufficient.
比較例 ４−２
CeO2が5.0重量％で、Nd2O3、Pr2O3、Fe2O3が
上記範囲内に限定された場合、ガラス強度特性等
が悪化し、しかも、緑色の吸収過剰により画像の
分解能が低下した。CeO2含有量が3.5重量％以下
では、上記のような問題は生じなかつた。Comparative Example 4-2 When CeO 2 is 5.0% by weight and Nd 2 O 3 , Pr 2 O 3 , and Fe 2 O 3 are limited within the above range, the glass strength properties etc. deteriorate, and green absorption The excess reduced image resolution. When the CeO 2 content was 3.5% by weight or less, the above problem did not occur.
ここで、上記比較例３、４におけるFe2O3と
CeO2とは同種の効果であるから、一方を省略し、
他方を極めて多く、たとえば、15重量％とするこ
とも考えられるが、この場合、他方の含有量が多
くなりすぎ、ガラスの強度特性等に悪影響がでる
おそれがある。したがつて、Fe2O3とCeO2の両
方を用いることによつて相乗効果が発揮される結
果、両者の各成分は1.0〜3.5重量％の少量で済む
ものと推定される。また、この発明ではフエース
部だけでなく、真空外囲器全体を同様材料で構成
してもよい。 Here, Fe 2 O 3 in Comparative Examples 3 and 4 above and
Since it has the same effect as CeO 2 , one is omitted,
It is conceivable to make the other content extremely large, for example, 15% by weight, but in this case, the content of the other content becomes too large, which may adversely affect the strength characteristics of the glass. Therefore, it is estimated that a synergistic effect is exerted by using both Fe 2 O 3 and CeO 2 , so that a small amount of 1.0 to 3.5% by weight of each of the two components is sufficient. Further, in the present invention, not only the face portion but also the entire vacuum envelope may be constructed of the same material.
以上のように、この発明によれば、赤色と緑色
の組み合せからなる２種類の螢光面を有する陰極
線管のフエース部に、青色吸収能力のある材料を
含有させたので、赤色と緑色の透過率が高まり、
上記陰極線管のコントラストを向上させることが
できる。したがつて、最適視認距離を大幅に短縮
する場合に使用して好適で、コントラストが良好
であることから、強い天空光下でも見易く鮮明な
画像を実現できる光源用陰極線管が得られる。 As described above, according to the present invention, the face portion of the cathode ray tube, which has two types of fluorescent surfaces consisting of a combination of red and green, contains a material capable of absorbing blue, so that red and green can be transmitted. rate increases;
The contrast of the cathode ray tube can be improved. Therefore, a cathode ray tube for a light source can be obtained, which is suitable for use when the optimum viewing distance is significantly shortened, and has good contrast, so that it is possible to realize an easy-to-see and clear image even under strong sky light.
第１図は単色螢光面をもつ光源用陰極線管を示
す概略断面図、第２図は単色螢光面をもつ光源用
陰極線管の表示用の配列を示す模式図、第３図は
この発明による光源用陰極線管を用いた表示装置
における陰極線管の配列を示す模式図、第４図は
この発明による光源用陰極線管の一実施例を示す
概略断面図、第５図は通常のカラー陰極線管用螢
光体の発光特性を示す特性図、第６図はこの発明
による光源用陰極線管のフエース部の分光透過率
を示す特性図、第７図はこの発明による光源用陰
極線管と組合わせて使用される他の光源用陰極線
管のフエース部の分光透過率を示す特性図であ
る。
２１……螢光面が赤色−緑色の２発光色領域か
らなる光源用陰極線管、２２……螢光面が青色−
緑色の２発光色領域からなる光源用陰極線管、２
４……フエース部、２５ａ，２５ｂ……螢光面、
２６ａ，２６ｂ……電子銃、２７ａ，２７ｂ……
非集束電子ビーム。
FIG. 1 is a schematic cross-sectional view showing a cathode ray tube for a light source with a monochromatic fluorescent surface, FIG. 2 is a schematic diagram showing a display arrangement of a cathode ray tube for a light source with a monochromatic fluorescent surface, and FIG. 3 is a diagram of the present invention. FIG. 4 is a schematic cross-sectional view showing an embodiment of the cathode ray tube for a light source according to the present invention, and FIG. FIG. 6 is a characteristic diagram showing the spectral transmittance of the face portion of the cathode ray tube for a light source according to the present invention, and FIG. 7 is a characteristic diagram showing the light emission characteristics of the phosphor. FIG. 7 is a characteristic diagram showing the spectral transmittance of the face portion of another cathode ray tube for a light source. 21...A cathode ray tube for a light source with a fluorescent surface consisting of two luminous color regions of red and green, 22...A fluorescent surface is blue.
Cathode ray tube for light source consisting of two green emission color regions, 2
4...Face portion, 25a, 25b...fluorescent surface,
26a, 26b...Electron gun, 27a, 27b...
Unfocused electron beam.
Claims (1)
置に用いる光源用陰極線管であつて、フエース部
の内面に形成された赤と緑の２発光色領域に分割
された螢光面と、それぞれの発光色領域に非集束
電子ビームを照射する２本の電子銃を有し、上記
フエース部が３〜10重量％のNd2O3と、1.5〜5.0
重量％のPr2O3と、1.0〜3.5重量％のFe2O3と、
1.0〜3.5重量％のCeO2とを含有するガラスで構成
されていることを特徴とする光源用陰極線管。1. A cathode ray tube for a light source used in a display device in which a large number of cathode ray tubes are arranged as pixels, which has a fluorescent surface divided into two luminescent color areas of red and green formed on the inner surface of the face part, and a fluorescent surface for each luminescent color area. It has two electron guns that irradiate unfocused electron beams to the color region, and the face portion is made of 3 to 10% by weight Nd 2 O 3 and 1.5 to 5.0% by weight.
wt% Pr 2 O 3 and 1.0-3.5 wt % Fe 2 O 3 ;
A cathode ray tube for a light source, comprising glass containing 1.0 to 3.5% by weight of CeO2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23160184A JPS60143561A (en) | 1984-10-31 | 1984-10-31 | Cathode-ray tube for light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23160184A JPS60143561A (en) | 1984-10-31 | 1984-10-31 | Cathode-ray tube for light source |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9890881A Division JPS57212764A (en) | 1981-06-22 | 1981-06-22 | Display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60143561A JPS60143561A (en) | 1985-07-29 |
| JPS636982B2 true JPS636982B2 (en) | 1988-02-15 |
Family
ID=16926066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23160184A Granted JPS60143561A (en) | 1984-10-31 | 1984-10-31 | Cathode-ray tube for light source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60143561A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0578681U (en) * | 1992-03-31 | 1993-10-26 | ダイハツ工業株式会社 | Locking structure for spare tire support members |
-
1984
- 1984-10-31 JP JP23160184A patent/JPS60143561A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0578681U (en) * | 1992-03-31 | 1993-10-26 | ダイハツ工業株式会社 | Locking structure for spare tire support members |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60143561A (en) | 1985-07-29 |
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