JPH0570248B2 - - Google Patents
Info
- Publication number
- JPH0570248B2 JPH0570248B2 JP24520483A JP24520483A JPH0570248B2 JP H0570248 B2 JPH0570248 B2 JP H0570248B2 JP 24520483 A JP24520483 A JP 24520483A JP 24520483 A JP24520483 A JP 24520483A JP H0570248 B2 JPH0570248 B2 JP H0570248B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- film
- slurry
- phosphor slurry
- face plate
- 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 - Fee Related
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 82
- 239000002002 slurry Substances 0.000 claims description 39
- 239000007787 solid Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 229920003169 water-soluble polymer Polymers 0.000 claims description 7
- 239000003086 colorant Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 229920000620 organic polymer Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 14
- 229920002451 polyvinyl alcohol Polymers 0.000 description 14
- 239000004922 lacquer Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- -1 azide compound Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003504 photosensitizing agent Substances 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
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
-
- 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
- H01J9/221—Applying luminescent coatings in continuous layers
- H01J9/223—Applying luminescent coatings in continuous layers by uniformly dispersing of liquid
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は蛍光面の形成方法に係り、特にカラー
受像管のフエースプレートの内面に３色に発光す
る蛍光体層を形成したのち、この蛍光体層上に水
被膜を均一に形成することが可能な蛍光面の形成
方法に関するものである。Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a method for forming a phosphor screen, and in particular, after forming a phosphor layer that emits light in three colors on the inner surface of a face plate of a color picture tube, The present invention relates to a method for forming a phosphor screen that can uniformly form a water film on a layer.
カラー受像管のフエースプレートの内面には電
子ビーム照射により青、赤、緑に発光する３色の
蛍光体層がストライプ状またはドツト状に規則的
に配列されている。
On the inner surface of the face plate of a color picture tube, phosphor layers of three colors, which emit blue, red, and green light when irradiated with electron beams, are regularly arranged in stripes or dots.
この蛍光体層の形成はポリビニルアルコール
（PVA）と重グロム酸塩からなる感光剤中に蛍光
体粒子を混合させた蛍光体スラリーをフエースプ
レート内面に所定量注入し、この後フエースプレ
ートを約200乃至300rpmで高速回転させて余剰の
蛍光体スラリーを回収するとともにフエースプレ
ート内面に均一な厚さの蛍光体スラリー膜を形成
する。次に加熱乾燥させた後、シヤドウマスクを
介して紫外線によりこのシヤドウマスクに穿設さ
れた電子ビーム通過孔部に対応する部分を硬化さ
せる。次に現像を行ない、未硬化部を取り除きス
トライプ状またはドツト状の蛍光体層を形成す
る。 To form this phosphor layer, a predetermined amount of phosphor slurry, which is a mixture of phosphor particles in a photosensitizer made of polyvinyl alcohol (PVA) and diglomate, is injected into the inner surface of the face plate. It is rotated at a high speed of 300 rpm to collect excess phosphor slurry and form a phosphor slurry film of uniform thickness on the inner surface of the face plate. Next, after drying by heating, the portions corresponding to the electron beam passage holes formed in the shadow mask are cured by ultraviolet rays through a shadow mask. Next, development is performed to remove uncured portions and form a striped or dot-shaped phosphor layer.
上述した工程を緑、青、赤の順に行なつたのち
平滑なアルミニウムの蒸着膜を得るため下記方法
により蛍光体層上に平滑なラツカーフイルムを形
成する。 After performing the above steps in the order of green, blue, and red, a smooth lacquer film is formed on the phosphor layer by the following method to obtain a smooth vapor deposited aluminum film.
上記平滑なラツカーフイルムは、ストライプ状
またはドツト状の蛍光体層状に均一な水被膜を形
成した後、ラツカー液をスプレーすることにより
塗布形成される。 The above-mentioned smooth lacquer film is formed by forming a uniform water film on a striped or dot-shaped phosphor layer and then spraying a lacquer solution.
しかし、発明者らの実験ではこの蛍光体層上の
水被膜は蛍光体層表面の粗さの程度により変化す
ることがわかつた。そして、その蛍光体表面の粗
さはPVAの量によつて変化するため、その蛍光
体層表面の粗さを変化させるべく、蛍光体スラリ
ーまたは蛍光体スラリー膜中に含まれるPVAの
量を増減させて、蛍光体層を形成し、ラツカーフ
イルムの成膜姓を検討した結果、蛍光体スラリー
または蛍光体スラリー膜中のPVAの量によつて
は、ラツカーフイルムにむらが生じ、その結果ホ
ワイトユニホミテイが低下することが判明した。 However, in experiments conducted by the inventors, it was found that the water film on the phosphor layer changes depending on the degree of roughness of the surface of the phosphor layer. Since the roughness of the phosphor surface changes depending on the amount of PVA, the amount of PVA contained in the phosphor slurry or phosphor slurry film can be increased or decreased in order to change the roughness of the phosphor layer surface. As a result of forming a phosphor layer and considering the film formation characteristics of the Lutzker film, it was found that depending on the amount of PVA in the phosphor slurry or phosphor slurry film, unevenness may occur in the Lutzker film. It was found that white uniformity decreased.
本発明は前述した実験結果を基にして蛍光体ス
ラリーまたは蛍光体スラリー膜のPVA量を限定
することにより平滑なラツカーフイルムを得るよ
うにした蛍光面の形成方法を提供することを目的
としている。
An object of the present invention is to provide a method for forming a phosphor screen in which a smooth lacquer film can be obtained by limiting the amount of PVA in the phosphor slurry or phosphor slurry film based on the above-mentioned experimental results. .
即ち、本発明はフエースプレートの内面に少な
くとも水溶性高分子、増感剤および蛍光体からな
る蛍光体スラリーを所定量注入し、次に前記フエ
ースプレートを高速回転させて均一厚さの蛍光体
スラリー膜を形成し、この蛍光体スラリー膜を加
熱乾燥した後、シヤドウマスクを介して紫外線に
より所望部分を硬化させ、この硬化後現像して順
次複数色の蛍光体層を形成し、この蛍光体層上に
有機高分子溶液を塗布してラツカーフイルムを形
成する蛍光面の形成方法において、蛍光体スラリ
ー膜中に含まれる水溶性高分子に体する蛍光体固
形分の比率、即ち水溶性高分子／蛍光体固形分の
比率y1を
2.0％≦y1≦5.5％
とするか、または蛍光体スラリー中に含まれる水
溶性高分子に対する蛍光体固形分の比率、即ち水
溶性高分子／蛍光体固形分の比率y2を
0.08x＋3.2≦y20.08x＋5.7
（但しｘは蛍光体スラリー注入から高速回転開始
までの秒数）としたことを特徴とする蛍光面の形
成方法である。
That is, in the present invention, a predetermined amount of a phosphor slurry consisting of at least a water-soluble polymer, a sensitizer, and a phosphor is injected into the inner surface of a face plate, and then the face plate is rotated at high speed to form a phosphor slurry with a uniform thickness. After forming a film and drying this phosphor slurry film by heating, desired areas are cured with ultraviolet rays through a shadow mask, and after this curing, development is performed to sequentially form phosphor layers of multiple colors. In the method of forming a phosphor screen in which a Lutzker film is formed by applying an organic polymer solution to Either the ratio of phosphor solid content y 1 is 2.0%≦y 1 ≦5.5%, or the ratio of phosphor solid content to water-soluble polymer contained in the phosphor slurry, that is, water-soluble polymer/phosphor solid This method of forming a phosphor screen is characterized in that the ratio y 2 of minutes is set to 0.08x+3.2≦y 2 0.08x+5.7 (where x is the number of seconds from the injection of the phosphor slurry to the start of high-speed rotation).
発明者らは蛍光体スラリーまたは蛍光体スラリ
ー膜中のPVAを増した場合のラツカーフイルム
の成膜姓を調べた。すなわちむらが生じる現象を
種々調査実験を行なつた結果、蛍光体層表面に
PVAの硬化膜が形成されると、そのために蛍光
体層表面の水持ちが低下し、平滑な水被膜を形成
することができなくなるという結論を得た。
The inventors investigated the film formation performance of Lutzker film when PVA in the phosphor slurry or phosphor slurry film was increased. In other words, as a result of various research experiments on the phenomenon that causes unevenness, we found that the surface of the phosphor layer
It was concluded that when a cured PVA film is formed, the water retention on the surface of the phosphor layer decreases, making it impossible to form a smooth water film.
更に、この現象に基づき実験を行なつた結果、
平滑なラツカーフイルムを得るには、
第１に塗布した乾燥した蛍光体スラリー膜中に
含まれるPVAに対する蛍光体固形分比率、即ち
PVA／蛍光体固形分の比率y1を2.0％≦y1％≦5.5
％の範囲にする必要がある。 Furthermore, as a result of conducting experiments based on this phenomenon,
In order to obtain a smooth Lutzker film, firstly, the solid content ratio of the phosphor to PVA contained in the dried phosphor slurry film applied, i.e.
PVA/phosphor solid content ratio y 1 to 2.0%≦y 1 %≦5.5
Must be in the % range.
第２に第１の範囲のPVAに対する蛍光体固形
分比率を得るためにフエースプレートの内面に塗
布する蛍光体スラリー中のPVA／蛍光体固形分
の比率y2は0.08x＋3.2≦y20.08x＋5.7の範囲にす
る必要がある。（但しｘはフエースプレート内面
に蛍光体スラリーを注入完了時点から高速回転開
始までの時間（秒））の範囲にする必要がある。
例えばｘ＝10秒の時、y2は４％≦y2≦6.5％の範
囲で蛍光体スラリーを調合する必要がある。これ
はフエースプレートの内面に蛍光体スラリーを注
入して蛍光体スラリー膜を形成するとき蛍光体が
沈降するため、余剰の蛍光体スラリーを回収した
フエースプレートの内面に残留する蛍光体スラリ
ーは、PVA／蛍光体固形分の比率が最初に注入
した蛍光体スラリーよりも小さくなる（蛍光体固
形分が多くなる）ためである。 Second, in order to obtain the phosphor solid content ratio to PVA in the first range, the PVA/phosphor solid content ratio y 2 in the phosphor slurry applied to the inner surface of the face plate is 0.08x+3.2≦y 2 0.08 It needs to be in the range of x+5.7. (However, x needs to be in the range of time (seconds) from the time when the injection of the phosphor slurry to the inner surface of the face plate is completed until the start of high speed rotation).
For example, when x=10 seconds, it is necessary to prepare the phosphor slurry so that y 2 is in the range of 4%≦y 2 ≦6.5%. This is because the phosphor settles when the phosphor slurry is injected into the inner surface of the face plate to form a phosphor slurry film, so the phosphor slurry remaining on the inner surface of the face plate after collecting excess phosphor slurry is This is because the ratio of phosphor solid content becomes smaller than that of the initially injected phosphor slurry (the phosphor solid content increases).
そして蛍光体スラリー膜でy1＜2.0％の時はス
トライプ状またはドツト状の蛍光体層の所謂ドツ
ト落ちや蛍光体スラリーの塗布むらができるし、
5.5％＜y1の時は孔あき、混色などを生じる。 When y 1 <2.0% in a phosphor slurry film, so-called drop-off of the phosphor layer in stripes or dots and uneven coating of the phosphor slurry occur.
When 5.5% < y 1 , holes and color mixing occur.
上述したy1及びy2の実験式を満足する蛍光体ス
ラリーを調合することにより、安定したラツカー
フイルム膜を形成することができ、その結果ホワ
イトユニホミテイを改善することができた。 By preparing a phosphor slurry that satisfies the above-mentioned experimental formulas of y 1 and y 2 , a stable Lutker film could be formed, and as a result, white uniformity could be improved.
なお、前記実施例では、蛍光体スラリー中の感
光性樹脂としてPVAを用いた場合について述べ
たが、この蛍光体スラリー中の感光性樹脂として
はPVAのほかにポリビニルピロリドンまたはそ
れらの混合物でもよい。また増感剤については重
クロム酸塩のほかアジド化合物、ジアゾ化合物ま
たはそれらの混合物でもよい。 In the above embodiment, a case was described in which PVA was used as the photosensitive resin in the phosphor slurry, but in addition to PVA, the photosensitive resin in the phosphor slurry may be polyvinylpyrrolidone or a mixture thereof. In addition to dichromate, the sensitizer may be an azide compound, a diazo compound, or a mixture thereof.
上述のように本発明の蛍光面の形成方法によれ
ば蛍光体層に均一なラツカーフイルムの形成が可
能となりその結果、ホワイトユニホミテイの良好
な蛍光面を得ることができた。
As described above, according to the method for forming a phosphor screen of the present invention, a uniform lacquer film can be formed on the phosphor layer, and as a result, a phosphor screen with good white uniformity can be obtained.
Claims (1)
高分子、増感剤および蛍光体からなる蛍光体スラ
リーを所定量注入し、次に前記フエースプレート
を高速回転させて均一厚さの蛍光体スラリー膜を
形成し、この蛍光体スラリー膜を加熱乾燥した
後、シヤドウマスクを介して紫外線により所望部
分を硬化させ、この硬化後現像して順次複数色の
蛍光体層を形成し、この蛍光体層上に有機高分子
溶液を塗布してラツカーフイルムを形成する蛍光
面の形成方法において、 前記蛍光体スラリー膜中に含まれる水溶性高分
子／蛍光体固形分の比率y1を 2.0％≦y1≦5.5％ としたことを特徴とする蛍光面の形成方法。 ２ フエースプレートの内面に少なくとも水溶性
高分子、増感剤および蛍光体からなる蛍光体スラ
リーを所定量注入し、次に前記フエースプレート
を高速回転させて均一厚さの蛍光体スラリー膜を
形成し、この蛍光体スラリー膜を加熱乾燥した
後、シヤドウマスクを介して紫外線により所望部
分を硬化させ、この硬化後現像して順次複数色の
蛍光体層を形成し、この蛍光体層上に有機高分子
溶液を塗布してラツカーフイルムを形成する蛍光
面の形成方法において、 前記蛍光体スラリー中に含まれる水溶性高分
子／蛍光体固形分の比率y2を 0.08x＋3.2≦y2≦0.08x＋5.7 （但しｘは蛍光体スラリー注入から高速回転開始
までの秒数） としたことを特徴とする蛍光面の形成方法。[Scope of Claims] 1. A predetermined amount of a phosphor slurry consisting of at least a water-soluble polymer, a sensitizer, and a phosphor is injected into the inner surface of a face plate, and then the face plate is rotated at high speed to form a uniform thickness of fluorescent material. After forming a body slurry film and drying this phosphor slurry film by heating, desired parts are cured with ultraviolet rays through a shadow mask, and after this hardening, development is performed to sequentially form phosphor layers of multiple colors. In a method for forming a phosphor screen in which a Lutzker film is formed by coating an organic polymer solution on a layer, the water-soluble polymer/phosphor solid content ratio y 1 contained in the phosphor slurry film is set to 2.0%≦ A method for forming a phosphor screen, characterized in that y 1 ≦5.5%. 2. A predetermined amount of a phosphor slurry consisting of at least a water-soluble polymer, a sensitizer, and a phosphor is injected into the inner surface of the face plate, and then the face plate is rotated at high speed to form a phosphor slurry film with a uniform thickness. After heating and drying this phosphor slurry film, desired areas are cured with ultraviolet rays through a shadow mask, and after this curing, development is performed to sequentially form phosphor layers of multiple colors. In a method for forming a phosphor screen in which a Lutzker film is formed by applying a solution, the water-soluble polymer/phosphor solid content ratio y 2 contained in the phosphor slurry is set to 0.08x+3.2≦y 2 ≦0.08x+5 .7 (where x is the number of seconds from the injection of the phosphor slurry to the start of high-speed rotation).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24520483A JPS60140625A (en) | 1983-12-28 | 1983-12-28 | Formation process for fluorescent screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24520483A JPS60140625A (en) | 1983-12-28 | 1983-12-28 | Formation process for fluorescent screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60140625A JPS60140625A (en) | 1985-07-25 |
| JPH0570248B2 true JPH0570248B2 (en) | 1993-10-04 |
Family
ID=17130169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24520483A Granted JPS60140625A (en) | 1983-12-28 | 1983-12-28 | Formation process for fluorescent screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60140625A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6276133A (en) * | 1985-09-30 | 1987-04-08 | Toshiba Corp | Formation of fluorescent screen for color picture tube |
-
1983
- 1983-12-28 JP JP24520483A patent/JPS60140625A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60140625A (en) | 1985-07-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |