JPH0311497B2 - - Google Patents
Info
- Publication number
- JPH0311497B2 JPH0311497B2 JP14436583A JP14436583A JPH0311497B2 JP H0311497 B2 JPH0311497 B2 JP H0311497B2 JP 14436583 A JP14436583 A JP 14436583A JP 14436583 A JP14436583 A JP 14436583A JP H0311497 B2 JPH0311497 B2 JP H0311497B2
- Authority
- JP
- Japan
- Prior art keywords
- grid
- anode substrate
- phosphor
- protective film
- fluorescent display
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 23
- 239000000758 substrate Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- MLFHJEHSLIIPHL-UHFFFAOYSA-N isoamyl acetate Chemical compound CC(C)CCOC(C)=O MLFHJEHSLIIPHL-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229940117955 isoamyl acetate Drugs 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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
- H01J29/08—Electrodes intimately associated with a screen on or from which an image or pattern is formed, picked-up, converted or stored, e.g. backing-plates for storage tubes or collecting secondary electrons
- H01J29/085—Anode plates, e.g. for screens of flat panel displays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/15—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with ray or beam selectively directed to luminescent anode segments
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、螢光表示管の製造方法に係り、特に
螢光体層が形成された陽極基板上に制御用グリツ
ド電極（以下、グリツドと称する）を組立てる際
に該グリツドの弛みによつて螢光体層の螢光面が
損傷するのを防止するようにしたグリツドの組立
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 manufacturing a fluorescent display tube, and particularly relates to a method for manufacturing a fluorescent display tube. This invention relates to a method for assembling a grid which prevents damage to the phosphor layer of the phosphor layer due to loosening of the grid during assembly.
螢光表示管においてフイラメントよりの電子の
流れを制御するグリツドを組立てる場合、従来で
は、第１図に示すように、ガラスなどからなる陽
極基板１上に印刷されたアノード電極２ａ，２
ｂ，２ｃ，……の表面に厚膜印刷法などによつて
螢光体層３ａ，３ｂ，３ｃ，……を形成したう
え、該陽極基板１上の所定箇所にグリツド５を位
置決めして固定材で固定することにより、該グリ
ツド５を、螢光体層３ａ，３ｂ，３ｃ，……が形
成された陽極基板１と規定の間隔を保つて設置し
ている。なお、第１図中、４は陽極基板１上に施
された図示しない配線層を被覆しそのスルーホー
ルを残して形成された絶縁層であり、アノード電
極２ａ，２ｂ，２ｃ，……は前記絶縁層４上にス
ルーホールを通して対応する配線層とそれぞれ導
通接続するものとなつている。
When assembling a grid for controlling the flow of electrons from a filament in a fluorescent display tube, conventionally, as shown in FIG.
The phosphor layers 3a, 3b, 3c, . . . are formed on the surfaces of the electrodes b, 2c, . By fixing the grid 5 with a material, the grid 5 is placed at a predetermined distance from the anode substrate 1 on which the phosphor layers 3a, 3b, 3c, . . . are formed. In FIG. 1, 4 is an insulating layer formed to cover a wiring layer (not shown) provided on the anode substrate 1, leaving through holes therein, and the anode electrodes 2a, 2b, 2c, . . . Through holes are provided on the insulating layer 4 to electrically connect them to the corresponding wiring layers.
ところで、前記グリツド５は通常、ステンレス
などの金属薄板をフオトエツチングによりメツシ
ユ状に形成したものが用いられ、このグリツド５
を上記陽極基板１上に固定するに際し、あらかじ
め陽極基板１上に位置決めしたグリツド５の固定
脚部にペースト状の導電接着材およびフリツトガ
ラスを固定材として塗布し、この固定材を乾燥し
たうえ、焼成炉で規定条件のもとに焼成すること
が行われている。この熱処理において、メツシユ
状のグリツド５は前記フリツトガラスの溶融点以
上で陽極基板１上に固定されるが、該グリツド５
の熱膨張が陽極基板１のそれよりも大きいため、
フリツトガラスの溶融点に到達するまでは仮固定
されたグリツド５は伸びて弛んでしまう。そのた
め、この弛みによりグリツド自体が陽極基板１上
に突出して形成された螢光体層３ａ，３ｂ，３
ｃ，……の螢光面に接触してその螢光面を損傷さ
せたり、あるいはグリツドへの螢光体の付着を生
じたりする欠点があつた。特に大型の螢光表示管
では、非常にグリツド寸法が長くなるため、熱処
理する以前の問題として陽極基板１上にグリツド
５を置くだけで弛んだグリツドが螢光面に損傷を
与えてしまう場合もある。 By the way, the grid 5 is usually formed into a mesh shape by photo-etching a thin metal plate such as stainless steel.
When fixing the grid on the anode substrate 1, a paste-like conductive adhesive and frit glass are applied as a fixing material to the fixed legs of the grid 5, which have been positioned on the anode substrate 1 in advance, and the fixing material is dried and then fired. It is fired in a furnace under specified conditions. In this heat treatment, the mesh-shaped grid 5 is fixed on the anode substrate 1 at a temperature higher than the melting point of the frit glass.
Since the thermal expansion of is larger than that of the anode substrate 1,
The temporarily fixed grid 5 stretches and loosens until the melting point of the frit glass is reached. Therefore, due to this slack, the grid itself protrudes onto the anode substrate 1 and the phosphor layers 3a, 3b, 3 are formed.
c, . Particularly in large fluorescent display tubes, the grid dimensions are extremely long, so as a problem before heat treatment, even if the grid 5 is placed on the anode substrate 1, the loosened grid may damage the fluorescent surface. be.
本発明は以上の点に鑑みてなされたもので、そ
の目的は、螢光体層が形成された陽極基板上にグ
リツドを組立てる際にそのグリツドの弛みによつ
て螢光体層の螢光面が損傷するのを防止した螢光
表示管の製造方法を提供することにある。
The present invention has been made in view of the above points, and an object of the present invention is to reduce the phosphor surface of the phosphor layer by loosening the grid when assembling the grid on the anode substrate on which the phosphor layer is formed. An object of the present invention is to provide a method for manufacturing a fluorescent display tube that prevents damage to the fluorescent display tube.
このような目的を達成するために、本発明は、
螢光体層が形成された陽極基板上にグリツドを組
立てる螢光表示管の製造方法において、前記螢光
体層上に熱分解可能な保護膜を形成し、ついで前
記グリツドを陽極基板上の所定箇所に位置決めし
て該グリツドに固定材を塗布し、しかる後前記グ
リツドを固定するとともに、前記保護膜を焼失さ
せる工程を焼成法により行うようにしたものであ
る。以下、本発明の実施例を図面につき説明す
る。 In order to achieve such an objective, the present invention
In a method for manufacturing a fluorescent display tube in which a grid is assembled on an anode substrate on which a phosphor layer is formed, a thermally decomposable protective film is formed on the phosphor layer, and then the grid is assembled in a predetermined position on the anode substrate. A fixing material is applied to the grid after positioning it at a location, and then the grid is fixed and the protective film is burnt out using a firing method. Embodiments of the present invention will be described below with reference to the drawings.
第２図は本発明の一実施例による螢光表示管の
製造方法を説明するための概略断面図であり、同
図において第１図と同一または相当部分は同一符
号を付してある。この実施例では、陽極基板１上
に、従来と同様の方法にてアノード電極２ａ，２
ｂ，２ｃ，……を形成するととに、該アノード電
極２ａ，２ｂ，２ｃ，……の表面に厚膜印刷法に
よつて螢光体層３ａ，３ｂ，３ｃ，……を形成す
る。ついで前記螢光体層３ａ，３ｂ，３ｃ，……
上の全面に、それら螢光面を保護するための熱分
解可能な保護膜１０を形成する。このとき、前記
保護膜１０の形成方法として、例えば、ニトロセ
ルローズ（溶質）を酢酸イソアミル（溶剤）で溶
解した溶液をスピンコートし乾燥させて形成する
ことができる。また、その他の溶質としてはエチ
ルセルローズやアクリル樹脂を用いたり、溶剤と
してはエチルカルビトールやブチルカルビトール
アセテートを用いることができる。このような保
護膜１０は基板の全面に亘つて、２〜3μｍの厚
さで形成されることになる。
FIG. 2 is a schematic sectional view for explaining a method of manufacturing a fluorescent display tube according to an embodiment of the present invention, and in this figure, the same or corresponding parts as in FIG. 1 are given the same reference numerals. In this embodiment, anode electrodes 2a and 2 are placed on an anode substrate 1 in the same manner as in the prior art.
.b, 2c, . . ., phosphor layers 3a, 3b, 3c, . . . are formed on the surfaces of the anode electrodes 2a, 2b, 2c, . Then, the phosphor layers 3a, 3b, 3c, . . .
A thermally decomposable protective film 10 for protecting the fluorescent surfaces is formed on the entire upper surface. At this time, the protective film 10 can be formed, for example, by spin coating a solution of nitrocellulose (solute) dissolved in isoamyl acetate (solvent) and drying. Further, as other solutes, ethyl cellulose and acrylic resin can be used, and as solvents, ethyl carbitol and butyl carbitol acetate can be used. Such a protective film 10 is formed over the entire surface of the substrate to a thickness of 2 to 3 μm.
ついで、メツシユ状のグリツド５を陽極基板１
上の所定箇所に位置決めし、該グリツド５の固定
脚部に導電接着材およびフリツトガラスを固定材
として塗布する。しかる後、前記工程材を乾燥し
たうえ、図示しないテンシヨン治具を用いてグリ
ツド５を両端方向に引つ張りながら、従来と同様
に空気中、480〜500℃で５〜10分間焼成すること
により、グリツド５を導電接着剤、フリツトガラ
スで陽極基板１上に固定させると同時に、この焼
成工程において上記保護膜１０を完全に焼失させ
ることができる。 Next, the mesh-shaped grid 5 is attached to the anode substrate 1.
The grid 5 is positioned at a predetermined position on the grid 5, and conductive adhesive and frit glass are applied to the fixing legs of the grid 5 as fixing materials. Thereafter, the process material is dried, and then fired in air at 480 to 500°C for 5 to 10 minutes as in the conventional method while pulling the grid 5 toward both ends using a tension jig (not shown). At the same time, the grid 5 is fixed on the anode substrate 1 with a conductive adhesive or frit glass, and at the same time, the protective film 10 can be completely burned away in this baking process.
このように、螢光体層３ａ，３ｂ，３ｃ，……
を形成した陽極基板１上にグリツド５を組立てる
際に、あらかじめ螢光体層３ａ，３ｂ，３ｃ，…
…上に熱分解可能な保護膜１０を形成しておくこ
とにより、グリツド５が弛みを生じても螢光体層
３ａ，３ｂ，３ｃ，……上の螢光面は上記保護膜
１０によつて保護されているので、その螢光面が
損傷するのを防止できるとともに、グリツド５へ
の螢光体の付着を防止できる。 In this way, the phosphor layers 3a, 3b, 3c,...
When assembling the grid 5 on the anode substrate 1 on which the phosphor layers 3a, 3b, 3c, . . .
By forming the thermally decomposable protective film 10 on the phosphor layers 3a, 3b, 3c, . Since the phosphor surface is protected by the grid 5, it is possible to prevent the phosphor surface from being damaged and also to prevent the phosphor from adhering to the grid 5.
なお、上記保護膜１０は、螢光表示管の組立完
了後に螢光体層３ａ，３ｂ，３ｃ，……上に残留
した場合その特性に悪影響を及ぼすことがあるた
め、完全に焼失させる必要がある。 Note that if the protective film 10 remains on the phosphor layers 3a, 3b, 3c, . be.
以上説明したように、本発明に係る螢光表示管
の製造方法によれば、組立時に発生するグリツド
と螢光体層の螢光面の接触を防止することができ
るので、螢光面が損傷したり、グリツドへ螢光体
が付着することがなくなり、したがつて表示品質
および歩留りを向上させることができる効果があ
る。
As explained above, according to the method for manufacturing a fluorescent display tube according to the present invention, contact between the grid and the fluorescent surface of the phosphor layer that occurs during assembly can be prevented, so that the fluorescent surface is damaged. This prevents the phosphor from sticking to the grid, thereby improving display quality and yield.
第１図は従来の螢光表示管の製造方法を説明す
るための概略断面図、第２図は本発明の一実施例
による螢光表示管の製造方法を説明するための概
略断面図である。
１……陽極基板、２ａ，２ｂ，２ｃ，……アノ
ード電極、３ａ，３ｂ，３ｃ，……螢光体層、４
……絶縁層、５……グリツド、１０……保護膜。
FIG. 1 is a schematic sectional view for explaining a conventional method for manufacturing a fluorescent display tube, and FIG. 2 is a schematic sectional view for explaining a method for manufacturing a fluorescent display tube according to an embodiment of the present invention. . 1... Anode substrate, 2a, 2b, 2c,... Anode electrode, 3a, 3b, 3c,... Fluorescent layer, 4
...Insulating layer, 5... Grid, 10... Protective film.
Claims (1)
電極を組立てる螢光表示管の製造方法において、
前記螢光体層上に熱分解可能な保護膜を形成し、
ついで前記グリツド電極を陽極基板上の所定箇所
に位置決めして該グリツド電極に固定材を塗布
し、しかる後前記グリツド電極を固定するととも
に、前記保護膜を焼失させる工程を焼成法により
行うことを特徴とする螢光表示管の製造方法。1. In a method for manufacturing a fluorescent display tube in which a grid electrode is assembled on an anode substrate on which a phosphor layer is formed,
forming a thermally decomposable protective film on the phosphor layer;
Next, the grid electrode is positioned at a predetermined location on the anode substrate, a fixing material is applied to the grid electrode, and then the grid electrode is fixed and the protective film is burnt off by a baking method. A method for manufacturing a fluorescent display tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14436583A JPS6037636A (en) | 1983-08-09 | 1983-08-09 | Manufacture of fluorescent character display tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14436583A JPS6037636A (en) | 1983-08-09 | 1983-08-09 | Manufacture of fluorescent character display tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6037636A JPS6037636A (en) | 1985-02-27 |
| JPH0311497B2 true JPH0311497B2 (en) | 1991-02-18 |
Family
ID=15360410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14436583A Granted JPS6037636A (en) | 1983-08-09 | 1983-08-09 | Manufacture of fluorescent character display tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037636A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0160323B1 (en) * | 1994-02-25 | 1998-12-01 | 박현승 | Flat panel display |
| KR0160322B1 (en) * | 1994-02-25 | 1998-12-01 | 박현승 | Flat panel display |
-
1983
- 1983-08-09 JP JP14436583A patent/JPS6037636A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6037636A (en) | 1985-02-27 |
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