JPH0311057B2 - - Google Patents
Info
- Publication number
- JPH0311057B2 JPH0311057B2 JP56135227A JP13522781A JPH0311057B2 JP H0311057 B2 JPH0311057 B2 JP H0311057B2 JP 56135227 A JP56135227 A JP 56135227A JP 13522781 A JP13522781 A JP 13522781A JP H0311057 B2 JPH0311057 B2 JP H0311057B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- cathode ray
- ray tube
- light source
- phosphor screen
- 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 - Lifetime
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- -1 silver-activated zinc sulfide phosphor Chemical class 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004922 lacquer Substances 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical compound [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000002344 surface layer Substances 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
- H01J63/02—Details, e.g. electrode, gas filling, shape of vessel
- H01J63/04—Vessels provided with luminescent coatings; Selection of materials for the coatings
Description
【発明の詳細な説明】
この発明はデイスプレイ装置などに使用される
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 display devices and the like.
デイスプレイの多様化に伴い、巨大デイスプレ
イ装置が種々開発されている。カラー表示や動画
の再現に適した方法として、三原色の絵素の一つ
一つを１本の陰極線管におきかえ数万本〜数十万
本の陰極線管を用いて行なう方法がある。このよ
うな陰極線管は光源用陰極線管と呼ばれ、いわば
発光素子とも表現できるのである。その構造の一
例を第１図に示す。 With the diversification of displays, various giant display devices have been developed. A method suitable for color display and moving image reproduction is to replace each of the three primary color picture elements with a single cathode ray tube, using tens of thousands to hundreds of thousands of cathode ray tubes. Such a cathode ray tube is called a light source cathode ray tube, and can also be described as a light emitting device. An example of its structure is shown in FIG.
同図において、円筒状のガラス製の管本体１の
フエース部２には緑、青もしくは赤に発光するい
ずれか一種の螢光体３が被着されている。前記螢
光体３には、いわゆるメタルパツクと称するアル
ミニウムの蒸着膜４が施されており、さらに導通
を目的とする内部塗装膜としてグラフアイト膜５
が塗布されている。６は信号に対応して電子を発
射し螢光体３を発光させるための電子銃である。 In the figure, a phosphor 3 of one type that emits green, blue, or red light is adhered to the face portion 2 of a cylindrical glass tube body 1. The phosphor 3 is coated with an aluminum vapor-deposited film 4 called a metal pack, and is further coated with a graphite film 5 as an internal coating film for the purpose of conduction.
is coated. Reference numeral 6 denotes an electron gun for emitting electrons in response to a signal to cause the phosphor 3 to emit light.
つぎにこのような光源用陰極線管の製造方法を
第２図Ａ〜Ｃにより説明する。 Next, a method of manufacturing such a cathode ray tube for a light source will be explained with reference to FIGS. 2A to 2C.
まず螢光体３を披着する管本体１の内面を、弗
化水素酸水溶液、水酸化ナトリウム水溶液、そし
て純水を用いて洗浄する。しかる後、たとえば、
電解質として酢酸バリウムの水溶液を所定量注入
した後、接着剤としての水ガラスの水溶液に所定
の螢光体３を分散させた懸濁液を注入し、所定時
間静置して螢光体３を沈澱させる。螢光体３が沈
澱した後、第２図Ａのように管本体１を傾動させ
て上澄液１１を排出し、脱湿エヤーにて乾燥させ
て螢光体３の披着を完了する。 First, the inner surface of the tube body 1 on which the phosphor 3 is attached is cleaned using a hydrofluoric acid aqueous solution, a sodium hydroxide aqueous solution, and pure water. After that, for example,
After injecting a predetermined amount of an aqueous solution of barium acetate as an electrolyte, a suspension of a predetermined phosphor 3 dispersed in an aqueous solution of water glass as an adhesive is injected, and the phosphor 3 is left standing for a predetermined period of time. Let it settle. After the phosphor 3 is precipitated, the tube body 1 is tilted as shown in FIG. 2A to discharge the supernatant liquid 11 and dried with a dehumidifying air to complete the deposition of the phosphor 3.
このような方法は一般に沈降法と呼ばれてい
る。螢光体３を披着した後、前記メタルパツクを
行なうが、螢光体３に直接アルミニウムの蒸着を
行なうと連続した蒸着皮膜が形成されないので、
フイルミングと称して螢光体３の上にごく薄い有
機皮膜を形成した後にアルミニウムを蒸着してい
る。すなわち、まず螢光面を純水などで湿潤状態
とし螢光体３の大部分を第２図Ｂに示すように水
膜７で覆つた後、アクリル樹脂を主成分とするト
ルエン、酢酸エチル等の有機溶剤ラツカーを吹き
つけると水膜７の上のごく薄いラツカー皮膜８が
形成される。続いて、不必要な領域のラツカー皮
膜８を、第２図Ｃに示すようにノズル９から一定
圧力で流出する純水１０によつて除去する。これ
ば螢光体３の披着されていない領域にラツカー皮
膜８を形成すると、この領域に蒸着されたアルミ
ニウム膜が後のベーキング工程で、いわゆる火ぶ
くれを起しガラス壁からはがれることを防ぐため
に行なうものである。つぎに脱湿エヤーなどで螢
光面を乾燥し、所定領域にグラフアイト膜５を塗
布してこれも同様に乾燥する。最後にアルミニウ
ムの蒸着を行ないアルミニウム蒸着膜４を形成し
た後、螢光面形成時に使用した有機質材料を約
400℃のベーキングにより分解除去して螢光面の
形成を完了する。 Such a method is generally called a sedimentation method. After the phosphor 3 is deposited, the metal pack is applied, but if aluminum is vapor-deposited directly onto the phosphor 3, a continuous vapor-deposited film will not be formed.
After forming a very thin organic film on the phosphor 3, which is called filming, aluminum is vapor-deposited. That is, first, the phosphor surface is wetted with pure water or the like, and most of the phosphor 3 is covered with a water film 7 as shown in FIG. When the organic solvent lacquer is sprayed, a very thin lacquer film 8 is formed on the water film 7. Subsequently, the lacquer film 8 in unnecessary areas is removed by pure water 10 flowing out from the nozzle 9 at a constant pressure, as shown in FIG. 2C. By forming the lacquer film 8 on the undeposited area of the phosphor 3, the aluminum film deposited on this area can be prevented from blistering and peeling off from the glass wall during the subsequent baking process. This is done in order to support people. Next, the fluorescent surface is dried using dehumidifying air or the like, and a graphite film 5 is applied to a predetermined area and dried in the same manner. Finally, after aluminum is vapor-deposited to form the aluminum vapor-deposited film 4, the organic material used in forming the fluorescent surface is removed.
It is decomposed and removed by baking at 400°C to complete the formation of the fluorescent surface.
螢光面の形成を完了した管本体１には、さらに
電子銃６を溶着封止し、しかる後、管本体内部を
真空に排気して電子銃６の活性化を行なつて第１
図に示す完成品となつている。 An electron gun 6 is further welded and sealed to the tube body 1 on which the fluorescent surface has been formed, and then the inside of the tube body is evacuated to activate the electron gun 6.
The finished product is shown in the figure.
従来このような方法で製造された青色光源用陰
極線管の螢光体は銀付活硫化亜鉛螢光体で、この
時の光出力は第３図曲線ａに示すように1000時間
で約60％の低下があつた。 The phosphor of cathode ray tubes for blue light sources conventionally manufactured by this method is a silver-activated zinc sulfide phosphor, and the light output at this time decreases by about 60% in 1000 hours as shown in curve a in Figure 3. There was a decrease in
いま、仮にカラー巨大デイスプレイ装置に、青
色発光の光源用陰極線管が取りつけられていたと
すると、この青色光源用陰極線管は緑および赤色
のものに比べて光出力低下が著しいため経時的に
再現色のバランスがくずれてくる。当然これを元
の正しい色あい、すなわち元の光出力に戻す操作
が行なわれる。その方法としては電子銃６からの
電子照射量を増やすものである。このような方法
では刺激量の増加により光出力はさらに加速され
て低下し、ついにはカラー巨大デイスプレイ装置
から青色光源用陰極線管のみを早期に交換する必
要があつた。すなわち従来のものでは光源用陰極
線管として最も重要な光出力の低下という重大な
欠点を有していた。 Now, if a giant color display device is equipped with a blue-emitting cathode ray tube as a light source, the light output of this cathode ray tube as a blue light source will drop significantly compared to green and red ones, so the color reproduction will deteriorate over time. The balance is lost. Naturally, an operation is performed to restore the original correct color tone, that is, the original light output. The method is to increase the amount of electron irradiation from the electron gun 6. In this method, the light output further accelerates and decreases as the amount of stimulation increases, and it becomes necessary to replace only the cathode ray tube for the blue light source in the large color display device at an early stage. In other words, the conventional cathode ray tube had a serious drawback of a decrease in light output, which is the most important factor for a cathode ray tube for a light source.
この発明は上記の欠点をなくするためになされ
たもので、光出力の低下の少ない青色光源用陰極
線管を提供することを目的とするものである。 The present invention has been made to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide a cathode ray tube for a blue light source with less reduction in optical output.
すなわち、この発明を要約すれば青色発光体の
粒子径を大きくして螢光面を製造し、光源用陰極
線管の光出力低下を少なくしたものである。発明
者らは青色の光源用陰極線管の光出力の劣化につ
いて、陰極線管としての特徴、すなわち比較的低
圧の約8KVの加速電圧で走査なしのスタテイク
ビームで刺激されること、また高電流密度のため
螢光面の温度が高くなること等を考慮し、螢光面
としての銀付活硫化亜鉛螢光体の特性、およびそ
の披着方法について種々実験した結果、最終的に
螢光体の粒子径を従来のものより極度に大きくす
ることによつて光出力の劣化を軽減できることを
見いだした。従来のものの螢光体３の平均粒子径
は約10μでその塗布量は５mg／cm2であるが、この
発明では20μ程度のものが良好であつた。なお、
粒子径のバラツキはほぼ±4μである。しかしな
がら製造工程の歩留まり、すなわち、蛍光体の粒
子径が大きくなると塗布工程において、塗布不良
を生じ実用的でなく、完成管の総合品質として実
用的には約16μ程度でその塗布量は約８mg／cm2つ
まり６ないし10mg／cm2の範囲で適用するのが望ま
しいものである。粒子径16μ以下では光出力の劣
化の軽減に対する貢献度が低い。またこの発明の
効果はつぎのように説明できる。すなわち比較的
低電圧で用いるこの種の光源用陰極線管の場合、
螢光体３の表面で電子エネルギーが消費されるた
め、表面の特性が重要となる。一方螢光体３は粒
径の増大とともに螢光体３の結晶性、表面近くの
欠陥が少なくなり、表面近くの特性が使用条件に
適したものとなる結果、光出力の劣化に対し好影
響するものと考えられる。 That is, the present invention can be summarized as follows: by increasing the particle size of the blue light emitter to produce a fluorescent surface, the reduction in light output of a cathode ray tube for a light source is reduced. The inventors investigated the deterioration of the light output of the blue light source cathode ray tube due to its characteristics as a cathode ray tube, namely, that it is stimulated by a static beam without scanning at a relatively low accelerating voltage of approximately 8 KV, and that it is stimulated by a static beam without scanning, and also has a high current density. As a result of various experiments on the characteristics of the silver-activated zinc sulfide phosphor as a fluorescent surface and its deposition method, we finally determined that the temperature of the phosphor surface would be high. It has been found that the deterioration of optical output can be reduced by making the particle size extremely larger than conventional ones. The conventional phosphor 3 has an average particle size of about 10 .mu.m and the coating amount is 5 mg/ cm.sup.2 , but in the present invention, a particle size of about 20 .mu.m is good. In addition,
The variation in particle size is approximately ±4μ. However, the yield rate of the manufacturing process, that is, when the particle size of the phosphor increases, coating defects occur in the coating process, making it impractical.The overall quality of the finished tube is approximately 16μ, and the coating amount is approximately 8mg/ It is desirable to apply it in a range of 6 to 10 mg/cm 2 , or 6 to 10 mg/cm 2 . Particles with a diameter of 16μ or less have a low contribution to reducing optical output deterioration. Further, the effects of this invention can be explained as follows. In other words, in the case of this type of light source cathode ray tube used at relatively low voltage,
Since electronic energy is consumed on the surface of the phosphor 3, the characteristics of the surface are important. On the other hand, as the particle size of the phosphor 3 increases, the crystallinity of the phosphor 3 and defects near the surface decrease, and the characteristics near the surface become suitable for the usage conditions, which has a positive effect on the deterioration of optical output. It is considered that
以下、この発明の一実施例を詳細に説明する。
螢光面の製造方法としては従来の方法とほぼ同等
であるが、さらに詳細に第２図で順を追つて説明
する。まずガラス製管本体１を苛性ソーダ、弗
酸、そして純水を用い内面を洗浄する。つぎに酢
酸バリウムの水溶液を0.05％になるように注入す
る。さらにSiO2濃度が0.7％に調整された水ガラ
ス、たとえばオーカシール（東京応化製）の水
溶液に平均粒子径16μの青色発光体（Zns：Ag）
３をフエース面積に対し、８mg／cm2量分散させた
懸濁液を注入し15分〜20分間静置して螢光体３を
沈澱させる。この状態は第２図Ａに示すとうりで
ある。つぎに螢光体３が沈澱したあと、管本体１
の傾動により上澄液１１を排出し脱湿エヤーにて
乾燥して螢光体３の披着を完了する。以下、ラツ
カーフイルミング工程、アルミパツク工程、ベー
キング処理工程等は従来法とまつたく同方法であ
る。以上のようにして塗布された大粒子径青色発
光体（Zns：Ag）は第３図曲線ｂに示すように、
従来のものに比べ光出力の低下は1000時間で約30
％に軽減した。曲線ｃは平均粒子径20μの場合を
示す。 Hereinafter, one embodiment of the present invention will be described in detail.
Although the method for manufacturing the fluorescent surface is almost the same as the conventional method, it will be explained in more detail step by step with reference to FIG. First, the inner surface of the glass tube body 1 is cleaned using caustic soda, hydrofluoric acid, and pure water. Next, an aqueous solution of barium acetate is injected to a concentration of 0.05%. Furthermore, a blue light emitter (Zns:Ag) with an average particle size of 16μ is added to an aqueous solution of water glass with an SiO 2 concentration adjusted to 0.7%, such as Orka Seal (manufactured by Tokyo Ohka).
A suspension of phosphor 3 dispersed in an amount of 8 mg/cm 2 per face area is injected and allowed to stand for 15 to 20 minutes to precipitate phosphor 3. This state is as shown in FIG. 2A. Next, after the phosphor 3 is precipitated, the tube body 1
The supernatant liquid 11 is discharged by tilting and dried with dehumidifying air, completing the deposition of the phosphor 3. Hereinafter, the lacquer film process, aluminum packing process, baking process, etc. are exactly the same as the conventional method. The large particle diameter blue luminescent material (Zns:Ag) coated as described above has the following properties as shown in curve b in Figure 3.
Compared to conventional models, the light output decreases by about 30% per 1000 hours.
%. Curve c shows the case where the average particle diameter is 20μ.
この実施例では直径１インチの円筒状管本体１
に対する沈降法について説明したが、その他感光
性結合剤を含むスラリー液、単に有機バインダー
を含むスラリー液による被着方法によるものにで
も、この発明による螢光体、すなわち6μ〜20μの
Zns：Agからなる発光体を用いることにより、表
面層の良好な蛍光体を使用でき、長時間の電子ビ
ームの照射による発光出力の低下を軽減させるこ
とができる。 In this embodiment, the cylindrical tube body 1 has a diameter of 1 inch.
The phosphor of the present invention, i.e., 6μ to 20μ, may be applied to other deposition methods using a slurry containing a photosensitive binder or simply a slurry containing an organic binder.
By using a light emitter made of Zns:Ag, it is possible to use a phosphor with a good surface layer, and it is possible to reduce the reduction in light emission output due to long-term electron beam irradiation.
勿論、螢光面の面積の大小に関係なく使用するこ
とができる。Of course, it can be used regardless of the size of the area of the fluorescent surface.
以上のように、この発明による光源用陰極線管
によれば、青色発光体の光出力の低下が少なくな
り、カラー巨大デイスプレイ等に用いた時、画像
の色バランスがくずれることなく長時間安定した
画像を再現できるうえ、不良管の交換頻度が減
り、維持コストが減る等の優れた効果を有してい
る。 As described above, according to the cathode ray tube for a light source according to the present invention, the decrease in the light output of the blue light emitter is reduced, and when used in a large color display, etc., the color balance of the image is not disrupted and the image is stable for a long time. In addition to being able to reproduce the problem, it has excellent effects such as reducing the frequency of replacing defective pipes and reducing maintenance costs.
第１図は光源用陰極線管の一例を示す断面図、
第２図Ａ〜Ｃは光源用陰極線管の製造方法の説明
図、第３図は従来の光源用陰極線管とこの発明に
よる光源用陰極線管の光出力を比較するための特
性図である。
１……管本体、２……フエース部、３……螢光
体層、６……電子銃。
なお図中、同一符号は同一もしくは相当部分を
示す。
FIG. 1 is a sectional view showing an example of a cathode ray tube for a light source;
2A to 2C are explanatory diagrams of a method of manufacturing a cathode ray tube for a light source, and FIG. 3 is a characteristic diagram for comparing the light output of a conventional cathode ray tube for a light source and a cathode ray tube for a light source according to the present invention. 1...tube body, 2...face part, 3...fluorescent layer, 6...electron gun. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
なくともフエース部に蛍光面を有し、内部に封止
された電子銃から上記蛍光面に電子線を照射して
発光させる光源用陰極線管において、前記蛍光面
の青色発光層の主成分は塊状不定形を呈する銀付
活硫化亜鉛蛍光体であつて、その平均粒子径を
16μ以上20μ以下、その塗布量を約８mg／cm2に設
定したことを特徴とする光源用陰極線管。1. In a cathode ray tube for a light source, which has a phosphor screen on at least the face of a glass tube body constituting a vacuum envelope, and emits light by irradiating the phosphor screen with an electron beam from an electron gun sealed inside. , the main component of the blue emitting layer of the phosphor screen is a silver-activated zinc sulfide phosphor exhibiting an amorphous block shape, and its average particle size is
A cathode ray tube for a light source, characterized in that the coating amount is set at 16μ or more and 20μ or less, and about 8mg/cm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13522781A JPS5835860A (en) | 1981-08-27 | 1981-08-27 | Crt for light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13522781A JPS5835860A (en) | 1981-08-27 | 1981-08-27 | Crt for light source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5835860A JPS5835860A (en) | 1983-03-02 |
| JPH0311057B2 true JPH0311057B2 (en) | 1991-02-15 |
Family
ID=15146780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13522781A Granted JPS5835860A (en) | 1981-08-27 | 1981-08-27 | Crt for light source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835860A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH097517A (en) * | 1995-06-21 | 1997-01-10 | Sony Corp | Manufacture of cathode-ray tube |
| WO2005059949A1 (en) * | 2003-12-17 | 2005-06-30 | Nihon University | Field emission spot light source lamp |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55126959A (en) * | 1979-03-24 | 1980-10-01 | Mitsubishi Electric Corp | Cathode ray tube for display unit |
-
1981
- 1981-08-27 JP JP13522781A patent/JPS5835860A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55126959A (en) * | 1979-03-24 | 1980-10-01 | Mitsubishi Electric Corp | Cathode ray tube for display unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5835860A (en) | 1983-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2233786A (en) | Fluorescent screen assembly and method of manufacture | |
| US5693438A (en) | Method of manufacturing a flat panel field emission display having auto gettering | |
| US3525679A (en) | Method of electrodepositing luminescent material on insulating substrate | |
| US3697301A (en) | Process of forming cathode ray tube screens to utilize the luminous efficiency of the phosphor material | |
| US6833663B2 (en) | Fluorescent material layer with metal back, method of forming the fluorescent material layer, and image display device | |
| JPH0311057B2 (en) | ||
| US3904502A (en) | Method of fabricating a color display screen employing a plurality of layers of phosphors | |
| GB1263668A (en) | Cathode ray tube bistable storage apparatus | |
| US3697794A (en) | Photocathode comprising layers of tin oxide, antimony oxide, and antimony | |
| EP0750331B1 (en) | Method of forming fluorescent screen of cathode ray tube | |
| JPH023262B2 (en) | ||
| US2751515A (en) | Cathode-ray tube | |
| US2833948A (en) | Cathode ray tube screen | |
| JPS6340010B2 (en) | ||
| US4204136A (en) | Dual layer phosphor screen for cathode ray tube | |
| US2625493A (en) | Method of manufacturing a reflective fluorescent screen | |
| JPS58152350A (en) | Phosphor screen for crt | |
| US2758942A (en) | Cathode-ray tube of the kind comprising a luminescent screen | |
| GB1173989A (en) | Improvements in or relating to Electron Image Storage and Display Devices | |
| JPS6329947B2 (en) | ||
| US2373752A (en) | Picture transmitter tube mosaic screen | |
| JP3376608B2 (en) | Cold cathode discharge lamp | |
| JP3520597B2 (en) | Method for manufacturing fluorescent display tube | |
| JPS636980B2 (en) | ||
| JPS58214268A (en) | Cathode-ray tube for light source |