JPS58212034A - Phosphor screen and formation thereof - Google Patents
Phosphor screen and formation thereofInfo
- Publication number
- JPS58212034A JPS58212034A JP9313682A JP9313682A JPS58212034A JP S58212034 A JPS58212034 A JP S58212034A JP 9313682 A JP9313682 A JP 9313682A JP 9313682 A JP9313682 A JP 9313682A JP S58212034 A JPS58212034 A JP S58212034A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- substance
- film
- material layer
- layer
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/26—Luminescent screens with superimposed luminescent layers
Abstract
Description
【発明の詳細な説明】
本発明は、カラー受像管の叶い光膜およびその形成方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light film for a color picture tube and a method for forming the same.
一般にカラー受像管のけい光膜の形成には、例えばポリ
ビニールアルコール重クロム酸アンモニウムの混合水溶
液からなる感光液にけい光物質の粒子を懸濁させてスラ
リーを調合し、パネル内面に塗布した後、シャドウマス
クを介して露光して露光部分のみを不溶化し、現像後所
定の絵素パターンを形成する方法が用いられている。即
ち上記の操作を３Ｍ色の緑、青、赤の各けい光体物質に
ついて順次行なうことによシ、各色絵素がモザイク状に
配列されたけい光膜ガ形成できる。Generally, to form a phosphor film for a color picture tube, particles of a phosphor substance are suspended in a photosensitive solution consisting of a mixed aqueous solution of polyvinyl alcohol ammonium dichromate to form a slurry, and the slurry is applied to the inner surface of the panel. , a method is used in which only the exposed portion is insolubilized by exposure through a shadow mask, and a predetermined pixel pattern is formed after development. That is, by sequentially performing the above operations on each of the 3M colors of green, blue, and red phosphor materials, a phosphor film in which pixels of each color are arranged in a mosaic pattern can be formed.
ところで、近年けい光膜のファインピッチ化に伴い、け
い光膜を構成する各けい光体絵素はドツト形状とされ、
その径も４２０μｍから２８０μｍ、１８０μｍ 、
１２０μｍ更に８５μｍ とｌトさくかつて来ている。By the way, in recent years, as the pitch of phosphor films has become finer, each phosphor picture element constituting the phosphor film has become dot-shaped.
The diameter also varies from 420μm to 280μm, 180μm,
It has rapidly increased to 120 μm and then 85 μm.
ところが、上述したような方法でけい光膜を形成する場
合、ドツトの大きさが小さくなれはなるほどけい光体ド
ツトの不溶化が難しくカシ、露光。However, when forming a phosphor film using the method described above, the smaller the size of the dots, the more difficult it is to insolubilize the phosphor dots, resulting in exposure.
現像が困難となるっ
本発明は、このよう力状況に鑑みて力されたものであ）
、その目的は、ドツト径がけい光体粒子径の３０倍以下
程度のけい光体絵素を有する高精細カラー受像管におい
て安定した成膜が可能なけい光膜およびその形成方法を
提供することにある。Development becomes difficult.The present invention was developed in view of this situation.)
The purpose is to provide a phosphor film that can be stably formed in a high-definition color picture tube having a phosphor picture element with a dot diameter of about 30 times or less than the phosphor particle diameter, and a method for forming the same. It is in.
このようガ目的を達成するために、本発明は、パネル内
面にけい光体からなる第１の物質層をドツト状に被着形
成し、この□第１の“物質層上に更に第２の物質層を形
成して２層構成としたものである。以下、実施例を用い
て本発明の詳細な説明するが、はじめに、小ドツトを安
定形成するために必果な条件について説明する。In order to achieve this object, the present invention forms a first material layer made of a phosphor in the form of dots on the inner surface of the panel, and further coats a second material layer on the first material layer. This invention has a two-layer structure by forming a material layer.The present invention will be described in detail below using examples, but first, the necessary conditions for stably forming small dots will be explained.
第１図は、露光によｐ不溶化されたけい光体ドツトが現
像でれる過程でどのようにカが加わるかを模式的に示し
たものである。同図に示すように、パネル１の内面に被
着したけい光体粒子２から力るドツト状のけい光体層３
には、現像により矢印で示すような力Ｆが加わる。FIG. 1 schematically shows how force is applied to the phosphor dots that have been rendered p-insoluble by exposure during the development process. As shown in the figure, a dot-shaped phosphor layer 3 is formed by phosphor particles 2 deposited on the inner surface of the panel 1.
Due to development, a force F as shown by the arrow is applied to the film.
第２図は、現像時に上記けい光体層３に加わる応力σの
ドツト径依存性を示すグラフである。この応力σは、現
像による力Ｆどけい光体層３の自重Ｗおよびけい光体層
３とパネル１とのコンタクト面積によって決まり、コン
タクト数をＣＰ、１コンタクト当たりの微小面積をΔＳ
とすれは、σ＝（Ｆ＋Ｗ）／ＣｐＸΔＳ
で表わされる。ここで、Ｗはけい光体層３の単位面積当
たりの脱型：・・量ＳＷとドツト面積πＤ２／４ （Ｄ
ｌｌ：）
はドツト径）とによって定められ、またコンタクト数Ｃ
はコンタクトピッチＰがけい光体の粒子径ｄの３倍とな
る（走査形電子顕微鏡による分析結果）ことから、
Ｗ＝＝Ｓ、−ＫＤ２／２
ｃ ｐ ＝ｓ／ ４ ｓ丁ｄ２ （ｓ＝πＤ
２／４）＝πＤ ２／３ Ｊ￥″ｄ２
従って、応力σは、
σ＝ （Ｆ＋ｓ、、・πＤ２／４）／（πＤＶ ３ Ｊ
”； ｄ ２）・ΔＳ２
：に−Ｆ−；＋に’−８．−ｄ２ （Ｋ、に’は定
数）となる。FIG. 2 is a graph showing the dot diameter dependence of the stress σ applied to the phosphor layer 3 during development. This stress σ is determined by the force F due to development, the weight W of the phosphor layer 3, and the contact area between the phosphor layer 3 and the panel 1, where the number of contacts is CP and the minute area per contact is ΔS.
The deviation is expressed as σ=(F+W)/CpXΔS. Here, W is demolding per unit area of the phosphor layer 3: amount SW and dot area πD2/4 (D
ll:) is determined by the dot diameter), and the number of contacts C
Since the contact pitch P is three times the particle diameter d of the phosphor (scanning electron microscope analysis result), W==S, -KD2/2 c p =s/ 4 sd2 (s= πD
2/4)=πD 2/3 J\″d2 Therefore, the stress σ is: σ= (F+s,,・πD2/4)/(πDV 3 J
"; d2)・ΔS2: ni-F-;+'-8.-d2 (K, ni' are constants).
ここから、現像時にけい光体ドツトに生じる応力σとド
ツト径り、けい光体粒子径ｄおよび単位面積当たシの脱
型量（これは即ち膜厚と考えて良い）ｓｗとの関係を示
せば、
（１） 応力はドツト径りが小さいほど大きくなシ、
はぼＤ２に反比例する。From this, we can calculate the relationship between the stress σ generated in the phosphor dot during development, the dot diameter, the phosphor particle diameter d, and the amount of demolding per unit area (this can be considered as the film thickness) s. (1) The smaller the dot diameter, the greater the stress.
is inversely proportional to D2.
ｆ２１ 応力はけい光体粒子径ｄが小さいほど小さく
なシ、はぼｄ２に比例する。The stress f21 decreases as the phosphor particle diameter d becomes smaller, and is proportional to d2.
（３） 応力は膜厚を大きくするほど大きくなる。(3) Stress increases as the film thickness increases.
以上の点から、小ドツトを現像時安定に形成するために
は、小粒子径のけい光体を薄膜塗布す・れば良いことに
なるが、この場合、一方で露光の問題が障害となる。次
に、これについて説明する。From the above points, in order to form small dots stably during development, it is sufficient to apply a thin film of a phosphor with a small particle size, but in this case, on the other hand, the problem of exposure becomes an obstacle. . Next, this will be explained.
一般に、けい光体層３とノくネル１との接着力の強度は
、露光光量ＩＩＩに対してノくネル（２）に到達する光
量Ｉ ００？の割合、即ち光透過度工０υｑ／ Ｉ Ｉ
肩と相関関係を有するものと考えられるが、１個のけい
光体粒子２を通過する際露光に寄与する光は、けい光体
の吸光係数をμとして、
ＩＯ”ＩＩＩＩ”−μｄ
に減衰する。これに叶い光体粒子層の全層数をｎとすれ
は、
Ｉｏｎｙ＝Ｉｎ＋（ｅ−μｄ）ｎ
となシ、粒子径が小さいｔｌと光の減衰は著しくなる。In general, the strength of the adhesive force between the phosphor layer 3 and the nozzle 1 is determined by the amount of light I00 that reaches the nozzle (2) relative to the exposure light amount III. The ratio of light transmittance 0υq/II
It is thought that there is a correlation with the shoulder, but when passing through one phosphor particle 2, the light that contributes to exposure is attenuated to IO"III"-μd, where μ is the extinction coefficient of the phosphor. . If this is true and the total number of layers of light particle layers is n, then Iony=In+(e-μd)n, and as the particle diameter tl becomes smaller, the attenuation of light becomes more significant.
これを第３図に示す。This is shown in FIG.
更に、この種のけい光膜は、一般にけい光体粒子径が大
きいほどその発光能率が高く、膜厚か大きいほど高輝度
が得られる。Furthermore, in this type of phosphor film, generally the larger the phosphor particle size, the higher the luminous efficiency, and the larger the film thickness, the higher the brightness can be obtained.
このように、小ドツトの高精細管用けい光膜においては
、高輝度のけい光膜を安定に成膜するためには相反する
豊作を満たす必１−ｂ＝ある。As described above, in a small-dot fluorescent film for high-definition tubes, in order to stably form a high-luminance fluorescent film, it is necessary to satisfy the contradictory conditions 1-b.
そこで、本発明は比較的粒子径の太きいけい光体を用い
て安定に成膜できるようにしようというものであり、第
４図を用いてその形成方法を具体的に説明する。Therefore, the present invention aims to make it possible to form a film stably by using a phosphor having a relatively large particle diameter, and a method for forming the film will be specifically explained with reference to FIG.
先ず、パネル１の内面にけい光体粒子２を含むけい光体
スラリーを塗布する（第４図（５））。次いで露光を行
なって（第４図（Ｂ） ） 、その後現像処理すること
によりけい光体粒子２からなるドツト状の第１の物質層
４を形成する（第４図（Ｃ））。First, a phosphor slurry containing phosphor particles 2 is applied to the inner surface of the panel 1 (FIG. 4 (5)). Next, exposure is performed (FIG. 4(B)), and then development is performed to form a dot-shaped first material layer 4 made of phosphor particles 2 (FIG. 4(C)).
しかしながら、この第１の物質層４のみでは十分な膜厚
と密度とが得られないため、更にこの上から同色のけい
光体粒子５を含むけい光体スラリーを塗布する（第４図
わ））。引続き露光を行ない＠４図（ト）））、現像す
ることによシ第１の物質層４の上に同色のけい光体粒子
５からなる第２の物質層６を形成し、２層構造のけ艷光
膜７が形成でき：：、ｌ。However, since sufficient film thickness and density cannot be obtained with this first material layer 4 alone, a phosphor slurry containing phosphor particles 5 of the same color is further coated on top of this (Fig. 4). ). Subsequently, exposure is performed (Fig. 4 (g))) and development to form a second material layer 6 made of phosphor particles 5 of the same color on the first material layer 4, resulting in a two-layer structure. A light emitting film 7 can be formed: :, l.
る（第４図（ト））。(Figure 4 (g)).
この場合、第４図（ト）で示す第２層の露光プロセスに
おいて露光量を調整することによシ、形成されるけい光
膜の膜厚を比較的自由に制御することができる。In this case, by adjusting the exposure amount in the second layer exposure process shown in FIG. 4(g), the thickness of the fluorescent film to be formed can be controlled relatively freely.
また、第４図（２）で示すプロセスにおいて、第１の物
質層４を構成するけい光体粒子２よシも小さな径のけい
光体粒子を含むスラリーヲ塗布することによυ、基本的
には粒子径の大きい発光能率の高いけい光体粒子を使用
しながら、小さい径のけい光体粒子を積層してけい光膜
の充電度を上げ、その安定性を高めることができる。こ
れを第５図に示す。即ち、同図において、第２の物質層
６は、第１層のけい光体粒子２よりも小さな径のけい光
体粒子８によつ、て構成されている。In addition, in the process shown in FIG. 4 (2), by applying a slurry containing phosphor particles with a smaller diameter than the phosphor particles 2 constituting the first material layer 4, basically While using phosphor particles with a large particle size and high luminous efficiency, it is possible to stack phosphor particles with a small diameter to increase the charge level of the phosphor film and improve its stability. This is shown in FIG. That is, in the figure, the second material layer 6 is composed of phosphor particles 8 having a smaller diameter than the phosphor particles 2 of the first layer.
更に、第２の物質層６を、紫外光を発し長い残光を有す
るけい光体粒子で形成すれば、容易に残光性のあるけい
光膜を形成することができる。しかもその場合、第２の
物質層６の膜厚は先に述べたように比較的容易に１．制
御でき、この膜厚を制御することによって上記残光時間
を制御することができる。Furthermore, if the second material layer 6 is formed of phosphor particles that emit ultraviolet light and have a long afterglow, it is possible to easily form a phosphor film with an afterglow property. Moreover, in that case, the thickness of the second material layer 6 can be relatively easily adjusted to 1. By controlling the film thickness, the afterglow time can be controlled.
また、第２の物質層６を、電子ビームは通すが光は反射
するような例えばアルミニウム粒子により構成すれば、
けい光膜の輝度を更に高めることが可能である。Furthermore, if the second material layer 6 is made of, for example, aluminum particles that allow electron beams to pass through but reflect light,
It is possible to further increase the brightness of the fluorescent film.
Ｃのように第２の物質層として残光層や反射層を形成す
る場合には、その被着形成工程は緑、青。When forming an afterglow layer or a reflective layer as a second material layer as in C, the adhesion forming process is green and blue.
赤の各プロセスごとに行なう必要ハなく、３色のけい光
体ドツトを完成した後に全面露光を行ない、上記けい光
体ドツトを構成する第１の物質層を含むパネル内面全体
に上述した第２の物質層を被着形成するようにしても良
いことは勿論である。It is not necessary to carry out the process for each red process, but after completing the three color phosphor dots, the entire surface is exposed, and the above-mentioned second material layer is applied to the entire inner surface of the panel, including the first material layer constituting the phosphor dots. Of course, it is also possible to form a material layer by depositing the material layer.
なお、上述した実施例はいわゆるスラリー法を用いてけ
い光膜を形成する場合についてのみ説明したが、本発明
はこれに限定されるものではなく、露光によシ粘着性を
発現する物質層にけい光体等の粉末を付着させて行なう
いわゆる光粘着性を用いる場合に適用しても同様の効果
が得られることは言うまでもない。In addition, although the above-mentioned embodiments have been described only in the case where a fluorescent film is formed using a so-called slurry method, the present invention is not limited to this, and it is possible to It goes without saying that the same effect can be obtained even when applying so-called photoadhesion, which is performed by adhering a powder such as a phosphor.
以上説明したように、本発明によれば、けい光膜を２層
構成とすることによシ、第１層に比較的大きな粒子径の
けい光体を用いて十分な輝度を得ると共に第２層で膜厚
の制御を行ない、あるいは充電度を高めることによって
安定した小ドツトからなる高精細管用のけい光膜を形成
することができる。また、第２層に残光層や反射層を用
いることによって、けい光膜に残光性を付与したり輝度
を高めたシすることか可能となる。。As explained above, according to the present invention, by forming the phosphor film into a two-layer structure, a phosphor having a relatively large particle size is used in the first layer to obtain sufficient brightness, and the second layer By controlling the thickness of each layer or increasing the degree of charge, it is possible to form a fluorescent film for high-definition tubes consisting of stable small dots. Furthermore, by using an afterglow layer or a reflective layer in the second layer, it becomes possible to impart afterglow properties to the fluorescent film or to increase the brightness. .
第１図は現像によシけい光膜に加わる力を説明するため
の図、第２図は現像中のけい光膜に加わる応力のドツト
径依存性の一例を示すグラフ、第３図はけい光膜の露光
における光透過率のけい光体粒子径依存性の一例を示す
グラフ、第４図囚〜（ト）は本発明の一実施例を示すけ
い光膜の各形成工程を説明するための図、第５図は本発
明の他の実施例のけい光膜を示す図である。
１Φ・・・パネル、２，５．８−・魯・けい光体粒子、
４・・・・第１の物質層、６・・・・第２の物質層、７
・・・・けい光膜。
代理人 弁理士 薄 １）利 幸゛１
寸 −ｙ−’
４
ＬＬＪ ＬFigure 1 is a diagram for explaining the force applied to the fluorescent film during development, Figure 2 is a graph showing an example of the dot diameter dependence of the stress applied to the fluorescent film during development, and Figure 3 is a diagram for explaining the force applied to the fluorescent film during development. Graphs showing an example of the dependence of light transmittance on phosphor particle size during exposure of a light film, FIGS. and FIG. 5 are diagrams showing a fluorescent film according to another embodiment of the present invention. 1Φ...Panel, 2,5.8-・Lu・fluorescent particle,
4...First material layer, 6...Second material layer, 7
...Fluorescent film. Agent Patent Attorney Usui 1) Li Yuki 1 Sun -y-' 4 LLJ L
Claims (1)
を有するドツト状のけい光体絵素を配列してなるけい光
膜において、けい光体絵素は、パネル内面に被着形成し
たけい光体がら力る第１の物質層と、この第１の物質層
上に積層した第２の物質層から々ることを特徴とするけ
い光膜。 ２ 第２の物質層はけい光体からなることを特徴とする
特許請求の範囲第１項記載のけい光膜。 ３、第２の物質層を構成するけい光体は第１の物質層を
構成するけい光体と異なる粒子径を有することを特徴と
する特許請求の範囲第２項記載のけい光膜。 ４ 第２の物質層を構成するけい光体は残光性を有する
ことを特徴とする特許請求の範囲第２項記載のけい光膜
。 ５ 第２の物質層は光反射性を有する物質からなること
を特徴とする特許請求の範囲第１項記載のけい光膜。 ６ パネル円面にけい光体の粒子径の３０倍以下の直径
を有するドツト状のけい光体絵素を配列してなるけい光
膜の形成方法において、けい光体絵素は、パネル内面に
けい光体からなる第１の物質層をドツト状に被着形成し
た後、この第１の物質層上に第２の物質層を積層して被
着することによ多形成することを特徴とするけい光膜の
形成方法。[Claims] 1. In a phosphor film formed by arranging dot-shaped phosphor pixels having a diameter of 30 times or less than the particle diameter of the phosphor on the inner surface of the panel, the phosphor pixels A phosphor film comprising: a first material layer on which a phosphor is deposited; and a second material layer laminated on the first material layer. 2. The fluorescent film according to claim 1, wherein the second material layer is made of a phosphor. 3. The phosphor film according to claim 2, wherein the phosphor constituting the second material layer has a particle diameter different from that of the phosphor constituting the first material layer. 4. The fluorescent film according to claim 2, wherein the phosphor constituting the second material layer has an afterglow property. 5. The luminescent film according to claim 1, wherein the second material layer is made of a light-reflecting material. 6 In a method for forming a phosphor film in which dot-shaped phosphor pixels having a diameter of 30 times or less than the particle diameter of the phosphor are arranged on a circular panel surface, the phosphor pixels are arranged on the inner surface of the panel. The method is characterized in that after a first material layer made of a phosphor is deposited in a dot shape, a second material layer is laminated and deposited on the first material layer to form a multilayer. A method for forming a fluorescent film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9313682A JPS58212034A (en) | 1982-06-02 | 1982-06-02 | Phosphor screen and formation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9313682A JPS58212034A (en) | 1982-06-02 | 1982-06-02 | Phosphor screen and formation thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58212034A true JPS58212034A (en) | 1983-12-09 |
Family
ID=14074104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9313682A Pending JPS58212034A (en) | 1982-06-02 | 1982-06-02 | Phosphor screen and formation thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58212034A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5772918A (en) * | 1995-02-20 | 1998-06-30 | Lg Electronics Inc. | Red fluorescent composition for color cathode-ray tube |
| KR100325851B1 (en) * | 1999-04-21 | 2002-03-07 | 김순택 | Blue phosphor complex having near ultraviolet-excited blue phosphors and cathode ray tube employing phosphor layer formed using the same |
| US7022260B2 (en) * | 2002-09-20 | 2006-04-04 | Sharp Kabushiki Kaisha | Fluorescent member, and illumination device and display device including the same |
| US8287760B2 (en) | 2002-08-23 | 2012-10-16 | Sharp Kabushiki Kaisha | Light-emitting apparatus, phosphorescent portion, and method of producing the same |
| JPWO2017077739A1 (en) * | 2015-11-04 | 2018-07-26 | シャープ株式会社 | Luminescent body, light emitting apparatus, lighting apparatus, and method of manufacturing luminous body |
-
1982
- 1982-06-02 JP JP9313682A patent/JPS58212034A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5772918A (en) * | 1995-02-20 | 1998-06-30 | Lg Electronics Inc. | Red fluorescent composition for color cathode-ray tube |
| KR100325851B1 (en) * | 1999-04-21 | 2002-03-07 | 김순택 | Blue phosphor complex having near ultraviolet-excited blue phosphors and cathode ray tube employing phosphor layer formed using the same |
| US8287760B2 (en) | 2002-08-23 | 2012-10-16 | Sharp Kabushiki Kaisha | Light-emitting apparatus, phosphorescent portion, and method of producing the same |
| US7022260B2 (en) * | 2002-09-20 | 2006-04-04 | Sharp Kabushiki Kaisha | Fluorescent member, and illumination device and display device including the same |
| JPWO2017077739A1 (en) * | 2015-11-04 | 2018-07-26 | シャープ株式会社 | Luminescent body, light emitting apparatus, lighting apparatus, and method of manufacturing luminous body |
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