JPS6353840A - Grid material of fluorescent character display tube - Google Patents
Grid material of fluorescent character display tubeInfo
- Publication number
- JPS6353840A JPS6353840A JP61197308A JP19730886A JPS6353840A JP S6353840 A JPS6353840 A JP S6353840A JP 61197308 A JP61197308 A JP 61197308A JP 19730886 A JP19730886 A JP 19730886A JP S6353840 A JPS6353840 A JP S6353840A
- Authority
- JP
- Japan
- Prior art keywords
- grid
- grid material
- thermal expansion
- display tube
- grain size
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 30
- 239000013078 crystal Substances 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052790 beryllium Inorganic materials 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 4
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 4
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 4
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 3
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 3
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 abstract description 13
- 229910045601 alloy Inorganic materials 0.000 abstract description 13
- 238000005530 etching Methods 0.000 abstract description 11
- 229910001374 Invar Inorganic materials 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- -1 Co Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 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
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Luminescent Compositions (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】 （目 的） 本発明は蛍光表示管のグリッド材に関する。[Detailed description of the invention] (the purpose) The present invention relates to a grid material for a fluorescent display tube.
（従来技術及び問題点）
蛍光表示管用の金属材料は大別してガラスと封着される
フレーム材とガラスとは封着されないグリッド材がある
。このうち、フレーム材はガラスと封着されるために、
熱膨張係数がガラス封着に適した４２６合金（４２％Ｎ
ｉ−６％Ｃｒ−ＦＣ）が使われている。これに対してグ
リッド材はガラスと封着されないので基本的には熱膨張
係数がガラス封着に適している必要はないが、フレーム
材にスポット溶接で固定されるためフレーム材との熱膨
張係数の差が大きいと、製造のｒＩＡ５００℃程度に加
熱されたときグリッドが変形するという問題が起こる。(Prior Art and Problems) Metal materials for fluorescent display tubes are broadly classified into frame materials that are sealed to glass and grid materials that are not sealed to glass. Of these, the frame material is sealed with the glass, so
426 alloy (42%N) whose coefficient of thermal expansion is suitable for glass sealing.
i-6%Cr-FC) is used. On the other hand, since the grid material is not sealed with the glass, it is basically not necessary that the thermal expansion coefficient is suitable for glass sealing, but since it is fixed to the frame material by spot welding, the thermal expansion coefficient of the grid material is different from that of the frame material. If the difference is large, there will be a problem that the grid will be deformed when heated to about 500° C. during production.
そのためグリッド材としても４２６合金が使用されてい
るのが現状である。Therefore, 426 alloy is currently used as the grid material.
ところが、近年蛍光表示管の用途が今までの主流だった
電卓から自動車の計器等、様々な分野に広がり、表示精
度にさらに厳しいものが要求されるようになってきた。However, in recent years, the use of fluorescent display tubes has expanded to a variety of fields, from calculators, which had been the mainstream until now, to automobile instruments, and more stringent display accuracy has become required.
最近のこのグリッド材に要求されている特性を列挙する
と次のようになる。The properties currently required of this grid material are listed below.
（１）熱膨張係数が小さいこと
（２）黒化膜の生成が容易なこと
（３）エツチング性が良好なこと
（４）強度があること
これらの要求特性についてさらに下記に詳しく説明する
。(1) A small coefficient of thermal expansion, (2) Easy formation of a blackened film, (3) Good etching properties, and (4) Strong strength. These required characteristics will be explained in more detail below.
（１）これは特に最近重要になってきた特性である。蛍
光表示管を作動させると、グリッドはグリッド電流によ
り発熱し、８ｏ〜１００℃にも達することがある。しか
し、このときフレームは発熱しないのでグリッドのみ膨
張し、この膨張係数が大きいとグリッドがたわんでしま
い表示精度を著しく低下させるのである。したがって熱
膨張係数が小さいことが要求される。従来の４２６合金
では熱膨張係数が大きすぎ、現実にグリッドのたわみが
起こっている。(1) This is a characteristic that has become particularly important recently. When a fluorescent display tube is operated, the grid generates heat due to the grid current, and the temperature can reach as high as 8°C to 100°C. However, since the frame does not generate heat at this time, only the grid expands, and if this expansion coefficient is large, the grid will bend, significantly reducing display accuracy. Therefore, it is required that the coefficient of thermal expansion is small. Conventional 426 alloy has a coefficient of thermal expansion that is too large, causing grid deflection.
（２）グリッドが光沢を持っていると外からの光を反射
してしまい蛍光表示を見えに＜＜シてしまう。そこで表
面に黒いＦｅ、０４を生成させ光の反射を防ぐという手
段をとっており、このＦｅ３Ｏ４黒化膜の生成が容易で
あることが要求される。従来の４２６合金は非鉄元素を
ＮｉとＣｒ合わせて４８％も含有するためＦｅ、０４を
十分生成させるには時間がかかりすぎる難点があった。(2) If the grid is glossy, it will reflect light from outside and make the fluorescent display invisible. Therefore, a measure is taken to prevent the reflection of light by forming black Fe, 04 on the surface, and it is required that this blackened Fe3O4 film be easily formed. Conventional 426 alloy contains 48% of non-ferrous elements including Ni and Cr, so it has the disadvantage that it takes too much time to sufficiently generate Fe and 04.
（３）グリッド材はエツチングによりメツシュ状に加工
されるので良好なエツチング性を有していることが望ま
れる。従来の４２６合金は耐食性の良いＮｉとＣｒを合
すせて４８％も含有するためエツチング性に難点があっ
た。(3) Since the grid material is processed into a mesh shape by etching, it is desired that it has good etching properties. Conventional 426 alloy contains a total of 48% of Ni and Cr, which have good corrosion resistance, and therefore has difficulty in etching.
（４）グリッドは板厚５０μｍ程度の薄板をエツチング
によりメツシュ状に加工した後、黒化処理等の工程を経
てフレームにスポット溶接されるが、板厚が薄いことと
メツシュ状であることから取り扱い中に折れたり曲がり
やすい。このような取り扱いによる不良を防ぐためには
強度が要求される。(4) The grid is made by etching a thin plate with a thickness of approximately 50 μm into a mesh shape, and then spot welding it to the frame after undergoing processes such as blackening treatment. However, it is difficult to handle due to the thin plate thickness and mesh shape. Easy to break or bend inside. Strength is required to prevent defects caused by such handling.
（構 成）
本発明はかかる点に鑑みてなされたもので熱膨張係数が
小さく、また非鉄元素の含有量の少ないアンバー合金を
グリッド材として用いることにより、たわみの発生を防
止し、黒化膜の生成を容易にし、エツチング性を改善し
たグリッド材を提供するものである。すなわち、重量％
でＮｉ３２〜４３％、残部Ｆｅ及び不可避的不純物から
なる蛍光表示管のグリッド材及び重量％でＮｉ３２〜４
３％、さらにＭｎ、Ｓｉ、Ａｌ、Ｔｉ、Ｖ、Ｚｒ、ＭＯ
ｌＮｂ、Ｃｏ、Ｔａ、Ｗ、Ｂｅ、Ｍｇ、Ｃｕ。(Structure) The present invention has been made in view of the above points, and by using an amber alloy with a small coefficient of thermal expansion and a low content of non-ferrous elements as the grid material, it is possible to prevent the occurrence of deflection and to prevent the blackened film from forming. The object of the present invention is to provide a grid material that facilitates the formation of a grid material and has improved etching properties. i.e. weight %
A grid material for a fluorescent display tube consisting of 32-43% Ni, the balance Fe and unavoidable impurities, and 32-4% Ni by weight.
3%, plus Mn, Si, Al, Ti, V, Zr, MO
INb, Co, Ta, W, Be, Mg, Cu.
Ｃａのうち１種または２種以上を合計で０．０１〜２．
０％含み、残部Ｆｅ及び不可避的不純物からなる蛍光表
示管のグリッド材並びに該グリッド材において結晶粒度
が粒度番号７．０以上である蛍光表示管のグリッド材に
関する。The total content of one or more types of Ca is 0.01 to 2.
The present invention relates to a grid material for a fluorescent display tube comprising 0% Fe with the balance being Fe and unavoidable impurities, and a grid material for a fluorescent display tube in which the grid material has a grain size of 7.0 or more.
また、本発明のグリッド材は高価なＮｉ及びＣｒの含有
量が従来の４２６合金より少ないので、経済的なメリッ
トも大きい。Furthermore, since the grid material of the present invention contains less expensive Ni and Cr than the conventional 426 alloy, it also has great economic advantages.
（発明の詳細な説明） 次に成分範囲の限定理由を述べる。(Detailed description of the invention) Next, the reason for limiting the component range will be described.
Ｎｉ３２％未満では熱膨張係数が大きくなりすぎ、また
、４３％を超えると熱膨張係数が大きくなりすぎるとと
もに黒化膜が生成しにくくなり、エツチング性も悪くな
るため３２〜４３％とした。If Ni is less than 32%, the coefficient of thermal expansion becomes too large, and if it exceeds 43%, the coefficient of thermal expansion becomes too large, it becomes difficult to form a blackened film, and the etching property deteriorates, so the range is set to 32 to 43%.
Ｍｎ、Ｓｉ、Ａ１．Ｔｉ、Ｖ、Ｚｒ、Ｍｏ、Ｎｂ、Ｃｏ
、Ｔａ、Ｗ、Ｂｅ、Ｍｇ、Ｃｕ、Ｃａ、これらの元素を
１種または２種以上添加すると合金の強度が増し、取り
扱い上の変形を防ぐことができる。この効果は０．０１
％未満では得られず。Mn, Si, A1. Ti, V, Zr, Mo, Nb, Co
, Ta, W, Be, Mg, Cu, Ca. Adding one or more of these elements increases the strength of the alloy and prevents deformation during handling. This effect is 0.01
It cannot be obtained if it is less than %.
２．０％を超えると熱膨張係数が大きくなりすぎ、また
黒化膜が生成しにくくなり、エツチング性も悪くなるた
め添加量は合計で０．０１〜２．０％とした。If it exceeds 2.0%, the coefficient of thermal expansion becomes too large, it becomes difficult to form a blackened film, and the etching properties deteriorate, so the total amount added was set to 0.01 to 2.0%.
また、結晶粒度が粒度番号７．０未満であると強度が不
足し取り扱い上で変形しやすい。したがって、結晶粒度
は粒度番号７．０以上が望ましい。Moreover, if the crystal grain size is less than grain size number 7.0, the strength will be insufficient and it will be easily deformed during handling. Therefore, the grain size is preferably 7.0 or more.
次に実施例を示す。Next, examples will be shown.
（実施例）
供試材は真空溶解後、鋳造、鍛造、熱間圧延を行い、さ
らに冷間圧延と焼鈍を繰り返して板厚０．０５ｔの冷延
材としたものである。供試材の成分を第１表に示す。熱
膨張係数は９５０℃×１０ｍ１ｎ、水素中で焼鈍した後
測定した。(Example) The test material was vacuum melted, then cast, forged, hot rolled, and then cold rolled and annealed repeatedly to obtain a cold rolled material with a plate thickness of 0.05 t. The components of the sample materials are shown in Table 1. The thermal expansion coefficient was measured after annealing in hydrogen at 950°C x 10ml.
熱膨張係数も第１表に示す。さらに、前記冷延板をエツ
チング加工によりグリッドに加工し、実際に蛍光表示管
に組み立て動作時のグリッドのたわみの有無を調査した
。この結果も第１表に示す・また、結晶粒度と取り扱い
上の不良発生状況についても第１表に示す。The coefficient of thermal expansion is also shown in Table 1. Furthermore, the cold-rolled sheet was processed into a grid by etching, and the presence or absence of deflection of the grid during actual assembly into a fluorescent display tube was investigated. The results are also shown in Table 1. Also, the crystal grain size and the occurrence of handling defects are also shown in Table 1.
第１表かられかるように本発明例は熱膨張係数が／Ｊ％
さいため動作時のグリッドのたわみは起こらない。この
様子を熱膨張曲線で説明すると第１図のようになる。こ
の第１図のＡの領域において、本発明例は４２６合金よ
り著しく熱膨張係数が小さい、又同図におけるＢの領域
においては本発明例の熱膨張係数は４２６合金の熱膨張
係数に近似しており熱膨張による不良の発生が抑制でき
る。As can be seen from Table 1, the thermal expansion coefficient of the present invention example is /J%
Due to its small size, the grid does not deflect during operation. This situation can be explained using a thermal expansion curve as shown in Figure 1. In the region A of FIG. 1, the thermal expansion coefficient of the present invention example is significantly smaller than that of the 426 alloy, and in the region B of the same figure, the thermal expansion coefficient of the present invention example is close to that of the 426 alloy. Therefore, the occurrence of defects due to thermal expansion can be suppressed.
また１本発明の範囲で元素を添加すること及び結晶粒度
を粒度番号７．０以上にすることにより取り扱い上の不
良の発生が抑えられている。また、本発明例は従来の４
２６合金に比べて黒化膜の生成が容易であった。これに
対して、比較例は熱膨張係数が大きいため動作時にグリ
ッドのたわみが起こる。Furthermore, by adding elements within the scope of the present invention and by setting the crystal grain size to 7.0 or more, the occurrence of handling defects is suppressed. Moreover, the example of the present invention is different from the conventional 4
It was easier to form a blackened film than with No. 26 alloy. On the other hand, the comparative example has a large coefficient of thermal expansion, so the grid deflects during operation.
（効 果）
以上に示すように、本発明のグリッド材は従来材に比べ
熱膨張係数が小さいので、たわみがなく表示精度が著し
く向上する。(Effects) As shown above, the grid material of the present invention has a smaller coefficient of thermal expansion than conventional materials, so there is no deflection and display accuracy is significantly improved.
また黒化膜の生成が容易でエツチング性にも優れており
１強度も高い優れた特長を有している。It also has excellent features such as easy formation of a blackened film, excellent etching properties, and high strength.
第１図は本発明例と４２６合金の熱膨張曲線である。 FIG. 1 shows the thermal expansion curves of the present invention example and the 426 alloy.
Claims (3)
的不純物からなる蛍光表示管のグリッド材。(1) A grid material for a fluorescent display tube consisting of 32 to 43% Ni by weight, the balance being Fe and unavoidable impurities.
Ａｌ、Ｔｉ、Ｖ、Ｚｒ、Ｍｏ、Ｎｂ、Ｃｏ、Ｔａ、Ｗ、
Ｂｅ、Ｍｇ、Ｃｕ、Ｃａのうち１種または２種以上を合
計で０．０１〜２．０％含み、残部Ｆｅ及び不可避的不
純物からなる蛍光表示管のグリッド材。(2) Ni 32-43% by weight, further Mn, Si,
Al, Ti, V, Zr, Mo, Nb, Co, Ta, W,
A grid material for a fluorescent display tube, containing a total of 0.01 to 2.0% of one or more of Be, Mg, Cu, and Ca, with the remainder being Fe and unavoidable impurities.
範囲第（１）項又は第（２）項のそれぞれに記載の蛍光
表示管のグリッド材。(3) The grid material for a fluorescent display tube according to claim (1) or (2), each having a crystal grain size of grain size number 7.0 or more.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61197308A JPS6353840A (en) | 1986-08-25 | 1986-08-25 | Grid material of fluorescent character display tube |
| KR1019870006172A KR910000925B1 (en) | 1986-08-25 | 1987-06-18 | Grid material of flat display tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61197308A JPS6353840A (en) | 1986-08-25 | 1986-08-25 | Grid material of fluorescent character display tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6353840A true JPS6353840A (en) | 1988-03-08 |
| JPH0481299B2 JPH0481299B2 (en) | 1992-12-22 |
Family
ID=16372296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61197308A Granted JPS6353840A (en) | 1986-08-25 | 1986-08-25 | Grid material of fluorescent character display tube |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6353840A (en) |
| KR (1) | KR910000925B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63279546A (en) * | 1987-05-09 | 1988-11-16 | Futaba Corp | Fluorescent character display tube |
| JPH01185570A (en) * | 1988-01-19 | 1989-07-25 | Matsushita Electric Ind Co Ltd | Liquid developing device and color electrostatic recording device |
| JPH0680248U (en) * | 1993-04-26 | 1994-11-08 | 双葉電子工業株式会社 | Fluorescent display tube |
| JPH07220665A (en) * | 1994-01-28 | 1995-08-18 | Futaba Corp | Display tube and metallic material for display tube |
| JP2004235150A (en) * | 2003-01-29 | 2004-08-19 | Samsung Sdi Co Ltd | Field emission device, display device using the same, and method of manufacturing the same |
-
1986
- 1986-08-25 JP JP61197308A patent/JPS6353840A/en active Granted
-
1987
- 1987-06-18 KR KR1019870006172A patent/KR910000925B1/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63279546A (en) * | 1987-05-09 | 1988-11-16 | Futaba Corp | Fluorescent character display tube |
| JPH01185570A (en) * | 1988-01-19 | 1989-07-25 | Matsushita Electric Ind Co Ltd | Liquid developing device and color electrostatic recording device |
| JPH0680248U (en) * | 1993-04-26 | 1994-11-08 | 双葉電子工業株式会社 | Fluorescent display tube |
| JPH07220665A (en) * | 1994-01-28 | 1995-08-18 | Futaba Corp | Display tube and metallic material for display tube |
| JP2004235150A (en) * | 2003-01-29 | 2004-08-19 | Samsung Sdi Co Ltd | Field emission device, display device using the same, and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR890001139A (en) | 1989-03-18 |
| JPH0481299B2 (en) | 1992-12-22 |
| KR910000925B1 (en) | 1991-02-18 |
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