JPH0418656B2 - - Google Patents
Info
- Publication number
- JPH0418656B2 JPH0418656B2 JP58114579A JP11457983A JPH0418656B2 JP H0418656 B2 JPH0418656 B2 JP H0418656B2 JP 58114579 A JP58114579 A JP 58114579A JP 11457983 A JP11457983 A JP 11457983A JP H0418656 B2 JPH0418656 B2 JP H0418656B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- photoresist
- dots
- weight
- polyvinyl alcohol
- 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 44
- 229920002120 photoresistant polymer Polymers 0.000 claims description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- 239000000839 emulsion Substances 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 17
- 239000004372 Polyvinyl alcohol Substances 0.000 description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 8
- 239000002952 polymeric resin Substances 0.000 description 8
- 229920003002 synthetic resin Polymers 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000011521 glass Substances 0.000 description 5
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003504 photosensitizing agent Substances 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/22—Applying luminescent coatings
- H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
- H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Description
【発明の詳細な説明】
この発明は、カラー陰極線管螢光面の製造方
法、とくに、螢光体をフエースパネルに効率良く
付着させる方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a color cathode ray tube phosphor surface, and more particularly to a method for efficiently attaching a phosphor to a face panel.
従来、良く知られているカラー陰極線管螢光面
の製造方法として、写真印刷法（露光法）があつ
た。この方法は、第１図に示されるように、洗浄
したフエースパネル１に、ポリビニルアルコール
のような高分子樹脂と重クロム酸塩などの感光剤
および螢光体粒子とからなる感光性螢光体スラリ
ー２を塗布して乾燥させた後、シヤドウマスク３
を取付けて所定の光源からの光４で所定位置を露
光し、その後、シヤドウマスク３を取り外して現
像を行ない、必要なパターンを形成するもので、
以上の操作を繰返して、赤、青、緑３種の螢光体
ドツト５のモザイクから構成される螢光面を製造
するものであつた。ところが、この方法では、第
２図の拡大図で示されるように、ガラスに対する
接着性を有するポリビニルアルコールなどの高分
子樹脂６とフエースパネル１のガラス面との接触
面積が、混在する螢光体粒子７に妨げられて狭め
られやすくなるため、螢光体ドツト５とフエース
パネル１のガラス面との充分な接着力が得られ
ず、上述した現像工程において螢光体ドツトが脱
落しやすくなり、螢光体ドツトの小さい高解像度
カラー陰極線管螢光面の製造には適さないという
欠点があつた。 Conventionally, a photographic printing method (exposure method) has been used as a well-known method for producing fluorescent surfaces of color cathode ray tubes. In this method, as shown in FIG. 1, a photosensitive phosphor consisting of a polymer resin such as polyvinyl alcohol, a photosensitizer such as dichromate, and phosphor particles is applied to a cleaned face panel 1. After applying slurry 2 and drying, apply shadow mask 3.
is attached and a predetermined position is exposed to light 4 from a predetermined light source, after which the shadow mask 3 is removed and development is performed to form the required pattern.
By repeating the above operations, a fluorescent surface consisting of a mosaic of three types of fluorescent dots 5, red, blue, and green, was manufactured. However, in this method, as shown in the enlarged view of FIG. Since the dots are easily blocked and narrowed by the particles 7, sufficient adhesive force between the phosphor dots 5 and the glass surface of the face panel 1 cannot be obtained, and the phosphor dots are likely to fall off during the above-mentioned development process. It has the disadvantage that it is not suitable for manufacturing high-resolution color cathode ray tube fluorescent surfaces with small phosphor dots.
この発明は、従来の欠点を改善するためになさ
れたもので、ガラス面への接着性の優れたカラー
陰極線管螢光面の製造方法を提供するものであ
る。 This invention was made to improve the conventional drawbacks, and provides a method for manufacturing a color cathode ray tube fluorescent surface that has excellent adhesiveness to a glass surface.
本発明者は、ガラス面と高分子樹脂の接触面積
を大きくする観点から、高分子樹脂を含むフオト
レジストと螢光体粒子とをそれぞれ独立して塗布
することにより本発明を完成させるに到つた。 From the viewpoint of increasing the contact area between the glass surface and the polymer resin, the inventors completed the present invention by independently applying a photoresist containing a polymer resin and phosphor particles. .
すなわち、第３図ａに示されるように、洗浄し
たフエースパネル１に、ポリビニルアルコールの
ような高分子樹脂と重クロム酸塩などの感光剤か
らなるフオトレジスト８を塗布し、乾燥させた
後、シヤドウマスク３を取り付けて所定の光源か
らの光４で所定位置を露光し、つぎに、シヤドウ
マスク３を取り外してから、同図ｂのように、螢
光体粒子を少量の高分子樹脂を含む純水に分散さ
せて粘性を持たせた螢光体分散液９を塗布して乾
燥させ、最後に現像して、同図ｃのように、必要
な螢光体ドツト１１を形成するものである。 That is, as shown in FIG. 3a, a photoresist 8 made of a polymer resin such as polyvinyl alcohol and a photosensitizer such as dichromate is applied to the cleaned face panel 1, and after drying, Attach the shadow mask 3 and expose a predetermined position with light 4 from a predetermined light source. Next, remove the shadow mask 3, and as shown in FIG. A phosphor dispersion 9 which has been made viscous by being dispersed in the phosphor is applied, dried, and finally developed to form the necessary phosphor dots 11 as shown in FIG.
この発明の方法は、公知の上記露光法、すなわ
ち、フオトレジスト塗布→乾燥→露光→潜像形成
→現像・・１→螢光体分散液塗布→乾燥→現像・・２の
工
程からなる露光法に比べ、フオトレジスト８を露
光して必要なパターンの潜像１０を形成した後、
直ちに現像しない点で大きく異なり、工程的には
大幅に簡略になる。 The method of the present invention is based on the above-described known exposure method, that is, an exposure method consisting of the following steps: photoresist coating → drying → exposure → latent image formation → development... 1 → fluorescent dispersion coating → drying → development... In comparison, after exposing the photoresist 8 to form a latent image 10 of the required pattern,
The major difference is that the process is not developed immediately, and the process is greatly simplified.
この発明の方法によれば、高分子樹脂が螢光体
粒子に妨げられることなくガラス面と接触するた
め、フオトレジスト８の潜像１０が脱落すること
はない。したがつて、この潜像１０に含まれる高
分子樹脂の膨潤によつて取り込まれる螢光体粒子
によつて形成される螢光体ドツト１１の脱落も発
生しない。 According to the method of the present invention, the latent image 10 of the photoresist 8 does not fall off because the polymer resin comes into contact with the glass surface without being hindered by the phosphor particles. Therefore, the phosphor dots 11 formed by the phosphor particles incorporated by the swelling of the polymeric resin contained in the latent image 10 do not come off.
しかし、第３図で説明した上記方法では、螢光
体粒子の塗布密度を高くできないので、これを改
良するためにフオトレジストの組成を検討した。
その結果、ポリビニルアルコールと重クロム酸塩
からなるフオトレジストにアクリルエマルジヨン
を添加することによつて螢光体粒子の塗布密度が
高められることが見い出された。第４図は、ポリ
ビニルアルコールに対して添加されたアクリルエ
マルジヨン固形分の比率と螢光体の塗布密度との
関係を示す図である。この図から明らかなよう
に、アクリルエマルジヨン添加の効果が顕著であ
り、アクリルエマルジヨンの添加比率は、0.5以
上では塗布密度が飽和することがわかる。したが
つて、添加率はポリビニルアルコールに対し0.05
〜0.5が好ましい。 However, with the method described above with reference to FIG. 3, it is not possible to increase the coating density of the phosphor particles, so the composition of the photoresist was investigated in order to improve this.
As a result, it has been found that the coating density of phosphor particles can be increased by adding an acrylic emulsion to a photoresist consisting of polyvinyl alcohol and dichromate. FIG. 4 is a diagram showing the relationship between the ratio of the solid content of the acrylic emulsion added to polyvinyl alcohol and the coating density of the phosphor. As is clear from this figure, the effect of adding acrylic emulsion is remarkable, and it can be seen that when the addition ratio of acrylic emulsion is 0.5 or more, the coating density becomes saturated. Therefore, the addition rate is 0.05 to polyvinyl alcohol.
~0.5 is preferred.
以下に実施例によりさらに詳細に説明する。 This will be explained in more detail with reference to Examples below.
実施例 １
洗浄したフエースパネルにつぎの割合で調製し
たフオトレジストを塗布し、乾燥させた。Example 1 A photoresist prepared in the following proportions was applied to a cleaned face panel and dried.
ポリビニルアルコール 1.5重量％
重クロム酸アンモニウム 0.15重量％
アクリルエマルジヨン 0.3重量％
純 水 残 部
つぎに、シヤドウマスクを介して緑色螢光体ド
ツトが形成されるべき位置を所定光源を用いて露
光し、次掲の緑色螢光体分散液をこの上から塗布
して乾燥させ、純水をスプレーして緑色螢光体ド
ツトを形成した。この緑色螢光体の塗布密度は
1.8mg／cm2であつた。Polyvinyl alcohol 1.5% by weight Ammonium dichromate 0.15% by weight Acrylic emulsion 0.3% by weight Pure water Balance Next, the position where the green phosphor dots are to be formed is exposed to light using a predetermined light source through a shadow mask. The green phosphor dispersion shown above was applied onto this, dried, and purified water was sprayed to form green phosphor dots. The coating density of this green phosphor is
It was 1.8mg/ cm2 .
ZnS：Cu：Al緑色螢光体 40重量％
ポリビニルアルコール １重量％
分散剤 0.1重量％
純 粋 残 部
こうして形成された緑色螢光体ドツトの脱落は
全く発生しなかつた。ZnS:Cu:Al green phosphor 40% by weight Polyvinyl alcohol 1% by weight Dispersant 0.1% by weight Pure balance The green phosphor dots thus formed did not fall off at all.
実施例 ２
実施例１で緑色螢光体ドツトを形成した後、つ
ぎの割合で調製したフオトレジストを塗布して乾
燥させた。Example 2 After forming the green phosphor dots in Example 1, a photoresist prepared in the following proportions was applied and dried.
ポリビニルアルコール 2.0重量％
重クロム酸ナトリウム 0.2重量％
アクリルエマルジヨン 0.6重量％
純 水 残 部
その後、青色螢光体ドツトが形成されるへき位
置をシヤドウマスクを介して、所定光源位置から
露光した後、つぎの組成の青色螢光体分散液をこ
の上から塗布して乾燥させ、純水噴霧により現像
して青色螢光体ドツトを形成した。この青色螢光
体の塗布密度は2.0mg／cm2であつた。Polyvinyl alcohol 2.0% by weight Sodium dichromate 0.2% by weight Acrylic emulsion 0.6% by weight Pure water Balance After that, the position where the blue phosphor dots are to be formed is exposed to light from a predetermined light source position through a shadow mask, and then A blue phosphor dispersion having the composition was applied onto this, dried, and developed by spraying with pure water to form blue phosphor dots. The coating density of this blue phosphor was 2.0 mg/cm 2 .
ZnS：Ag青色螢光体 40重量％
ポリビニルアルコール 1.5重量％
分散剤 0.1重量％
純 水 残 部
実施例 ３
実施例１およびで緑色および青色螢光体ドツト
を形成したフエースパネルに、つぎの割合で調整
したフオトレジストを塗布して乾燥させた後、実
施例１および２と同様に赤色螢光体ドツトが形成
されるべき位置を露光して潜像を形成した。この
上か
ポリビニルアルコール 2.0重量％
重クロム酸カリウム 0.08重量％
アクリルエマルジヨン 1.0重量％
純 水 残 部
ら、つぎの組成の赤色螢光体分散液を塗布して乾
燥させ、純水噴霧により現像して赤色螢光体ドツ
トを形成した。この赤色螢光体の塗布密度は2.0
mg／cm2であつた。ZnS: Ag blue phosphor 40% by weight Polyvinyl alcohol 1.5% by weight Dispersant 0.1% by weight Pure water Balance Example 3 The following proportions were applied to the face panel in which green and blue phosphor dots were formed in Example 1 and above. After the prepared photoresist was applied and dried, the positions where red phosphor dots were to be formed were exposed to light in the same manner as in Examples 1 and 2 to form a latent image. Polyvinyl alcohol 2.0% by weight Potassium dichromate 0.08% by weight Acrylic emulsion 1.0% by weight Pure water On top of this, a red phosphor dispersion having the following composition was applied, dried, and developed by spraying with pure water. to form red phosphor dots. The coating density of this red phosphor is 2.0
mg/ cm2 .
Y2O2S：Eu赤色螢光体 40重量％
ポリビニルアルコール 2.0重量％
分散剤 0.1重量％
純 水 残 部
以上詳述したように、この発明のカラー陰極線
管螢光面製造方法によれば、フオトレジスト８に
露光して必要なパターン潜像１０を形成したの
ち、直ちに現像しないようにしたため、この種カ
ラー陰極線管螢光面の製造方法としてその工程が
簡素化され、コストダウンに貢献するばかりでな
く、フエースパネルのガラス面に接着したフオト
レジストに螢光体を接着するため、螢光体ドツト
としての脱落が発生せず、螢光体ドツトの小さい
高解像度カラー陰極線管螢光面の製造方法として
その利用価値が大きいことはいうまでもない。な
お、上述した螢光体ドツトは、その形状の一例と
して挙げたにすぎず、ストライプあるいは矩形状
であつてもこの発明が適用できることはいうまで
もない。また、ポリビニルアルコール以外の高分
子樹脂としては、ポリビニルピロリドンなどのポ
リビニルアルコール変性物が使用できることも容
易に推定できる。Y 2 O 2 S: Eu red phosphor 40% by weight Polyvinyl alcohol 2.0% by weight Dispersant 0.1% by weight Pure water Balance As detailed above, according to the method for producing a color cathode ray tube fluorescent surface of the present invention, Since the photoresist 8 is exposed to light to form the necessary pattern latent image 10, it is not developed immediately, which simplifies the manufacturing process for this type of color cathode ray tube fluorescent surface and contributes to cost reduction. Instead, the phosphor is bonded to the photoresist bonded to the glass surface of the face panel, so phosphor dots do not fall off, making it possible to manufacture high-resolution color cathode ray tube phosphor surfaces with small phosphor dots. It goes without saying that this method has great utility value. It should be noted that the above-mentioned phosphor dots are merely given as an example of their shape, and it goes without saying that the present invention is applicable to striped or rectangular shapes as well. Furthermore, it can be easily assumed that polyvinyl alcohol modified products such as polyvinylpyrrolidone can be used as the polymer resin other than polyvinyl alcohol.
第１図は従来の写真印刷法による螢光面を示す
断面図、第２図は第１図の要部の拡大断面図、第
３図ａ，ｂ，ｃはこの発明の工程を説明するため
の螢光面の断面図、第４図はフオトレジストに含
まれるアクリルエマルジヨンとポリビニルアルコ
ール（PVA）の比と螢光体塗布密度の関係を示
す図である。
１……フエースパネル、３……シヤドウマス
ク、４……光、６……高分子樹脂、７……螢光体
粒子、８……フオトレジスト、９……螢光体分散
液、１０……パターン潜像、１１……螢光体ドツ
ト。
なお、図中、同一符号は同一または相当部分を
示す。
Fig. 1 is a sectional view showing a fluorescent surface produced by a conventional photo printing method, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, and Figs. 3 a, b, and c are for explaining the steps of this invention. FIG. 4 is a diagram showing the relationship between the ratio of acrylic emulsion and polyvinyl alcohol (PVA) contained in the photoresist and the coating density of the phosphor. DESCRIPTION OF SYMBOLS 1... Face panel, 3... Shadow mask, 4... Light, 6... Polymer resin, 7... Fluorescent particles, 8... Photoresist, 9... Fluorescent dispersion, 10... Pattern Latent image, 11...fluorescent dots. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
比のアクリルエマルジヨンを含むフオトレジスト
を塗布し、このフオトレジストを乾燥させた後、
シヤドウマスクを取り付けてフオトレジストの所
定部分だけを露光して必要なパターンの潜像を形
成した後、直ちに現像せずに、このパターン潜像
の上から螢光体分散液を塗布し、その乾燥の後に
現像してフオトレジストの未露光部分とその上の
露光体とを除去する工程を含むカラー陰極線管螢
光面の製造方法。1. Apply a photoresist containing an acrylic emulsion at a weight ratio of 0.05 to 0.5 to the entire inner surface of the face panel, and after drying this photoresist,
After attaching a shadow mask and exposing only a predetermined portion of the photoresist to form a latent image of the desired pattern, a phosphor dispersion is applied over this pattern latent image without immediate development, and the phosphor dispersion is dried. A method of manufacturing a color cathode ray tube phosphor surface comprising the step of subsequent development to remove the unexposed portions of the photoresist and the exposed material thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11457983A JPS607037A (en) | 1983-06-23 | 1983-06-23 | Production method of color crt phosphor screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11457983A JPS607037A (en) | 1983-06-23 | 1983-06-23 | Production method of color crt phosphor screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS607037A JPS607037A (en) | 1985-01-14 |
| JPH0418656B2 true JPH0418656B2 (en) | 1992-03-27 |
Family
ID=14641369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11457983A Granted JPS607037A (en) | 1983-06-23 | 1983-06-23 | Production method of color crt phosphor screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS607037A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758015A (en) * | 1980-09-26 | 1982-04-07 | Maruichi Seisakusho:Kk | Method of assembling and gas charging at a time for disposable lighter |
| JPS57118344A (en) * | 1981-01-14 | 1982-07-23 | Hitachi Ltd | Manufacture of fluorescent surface for color image receiving tube |
| JPS57182379A (en) * | 1981-05-06 | 1982-11-10 | Toshiba Corp | Method for forming phosphor screen on cathode-ray tube |
-
1983
- 1983-06-23 JP JP11457983A patent/JPS607037A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758015A (en) * | 1980-09-26 | 1982-04-07 | Maruichi Seisakusho:Kk | Method of assembling and gas charging at a time for disposable lighter |
| JPS57118344A (en) * | 1981-01-14 | 1982-07-23 | Hitachi Ltd | Manufacture of fluorescent surface for color image receiving tube |
| JPS57182379A (en) * | 1981-05-06 | 1982-11-10 | Toshiba Corp | Method for forming phosphor screen on cathode-ray tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS607037A (en) | 1985-01-14 |
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