JPS617552A - Fluorescent display tube - Google Patents
Fluorescent display tubeInfo
- Publication number
- JPS617552A JPS617552A JP12779784A JP12779784A JPS617552A JP S617552 A JPS617552 A JP S617552A JP 12779784 A JP12779784 A JP 12779784A JP 12779784 A JP12779784 A JP 12779784A JP S617552 A JPS617552 A JP S617552A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor layer
- particle diameter
- layer
- particles
- blue
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000002245 particle Substances 0.000 claims abstract description 34
- 239000005357 flat glass Substances 0.000 abstract description 4
- 238000007650 screen-printing Methods 0.000 abstract description 4
- 229910052709 silver Inorganic materials 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 2
- 239000010439 graphite Substances 0.000 abstract description 2
- 239000004332 silver Substances 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229910052738 indium Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004544 sputter deposition 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
- 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
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
Description
【発明の詳細な説明】
（１）発明の属する分野の説明
この発明は、蛍光表示管の蛍光体層形成に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (1) Description of the field to which the invention pertains This invention relates to the formation of a phosphor layer in a fluorescent display tube.
（２）従来の技術の説明
従来の蛍光表示管における陽極の構造は、第１図に示す
様に陽極を、構成する板ガラス１に給電用配線２を形成
し、その後電気絶縁層３を形成し、スルーホール４を介
して蛍光体層の下地電極群５を形成し、この電極の上に
一種類の蛍光体層が形成されている。又、最近では第２
図に示す様に、板ガラス１にＭのフォトエツチング法に
よシ、給電用配線２と下地電極群５を同時に形成し、下
地電極群５を除いた部分に電気絶縁層３を形成し、前記
下地電極上に一種類の蛍光体層を形成する形式の蛍光表
示管も、ファインパターン表示が要求される分野におい
て広く使用されている。(2) Description of the Prior Art The structure of the anode in a conventional fluorescent display tube is as shown in FIG. A base electrode group 5 for the phosphor layer is formed through the through hole 4, and one type of phosphor layer is formed on this electrode. Also, recently the second
As shown in the figure, a power supply wiring 2 and a base electrode group 5 are simultaneously formed on a plate glass 1 by the photoetching method of M, and an electrical insulating layer 3 is formed on a portion other than the base electrode group 5. Fluorescent display tubes in which one type of phosphor layer is formed on a base electrode are also widely used in fields where fine pattern display is required.
下地電極材料としては、一般的なグラファイトＭの他に
Ｉｎ、０． 、８ｎＯ，等も用いられるが、これらの下
地電極表面は平滑であるため、粒子径が大きい蛍光体層
、下地電極との接触面積が小さくなるため、蛍光体層と
下地電極との接着力が弱まシ、蛍光体層がはがれたシ、
又、接触電気抵抗が高くなることによシ実効陽極電圧が
下がシ、蛍光体発光時の輝度低下を招いている。As the base electrode material, in addition to the general graphite M, In, 0. . Weak spots, phosphor layer peeled off,
Furthermore, as the electrical contact resistance increases, the effective anode voltage decreases, resulting in a decrease in brightness when the phosphor emits light.
又、蛍光体粒子間の接触面積も小さくなるため、蛍光体
層としての導電性が低下し、電荷のチャージ・アップを
招き、輝度低下を更に助長させる結果となっていた。Furthermore, since the contact area between the phosphor particles becomes smaller, the conductivity of the phosphor layer decreases, leading to charge build-up, which further aggravates the reduction in brightness.
これらの問題を解決するため、蛍光体の小粒子化あるい
は導電粒子として、Ｉｎ、Ｏ，微粒子を、蛍光体に混合
するという方策がとられているが、一般に蛍光体を小粒
子化すると、輝度は低下するという問題があシ、また、
Ｉｎ、Ｏ，は非発行物であるので混合比率を大きくでき
ないという問題があった。To solve these problems, measures have been taken to make the phosphor particles smaller or to mix In, O, or fine particles as conductive particles into the phosphor. There is a problem that the
Since In and O are unpublished materials, there was a problem in that the mixing ratio could not be increased.
（３）発明の目的
本発明は上記欠点を解決するため、蛍光体層を形成する
に当たシ、電子が直接衝突する陰極対向面の蛍光体層に
は比較的粒子径の大きい蛍光体層を形成し、より高輝度
を得ると共に下地電極と接触する蛍光体層には、比較的
粒子径の小さい蛍光体層を形成し、下地電極との接触面
積を増大せしめ、接着力及び導電性の向上を図ったこと
にある。(3) Purpose of the Invention In order to solve the above-mentioned drawbacks, the present invention provides a phosphor layer with a relatively large particle size in the phosphor layer on the surface facing the cathode where electrons directly collide. A phosphor layer with a relatively small particle size is formed on the phosphor layer in contact with the base electrode to increase the contact area with the base electrode and improve adhesive strength and conductivity. This is because we have tried to improve.
（４）発明の構成および作用の説明 以下に本発明の実施例を図を用いて説明する。(4) Explanation of the structure and operation of the invention Embodiments of the present invention will be described below with reference to the drawings.
第３図は、本発明による蛍光表示管の陽極の断面図であ
る。第３図において陽極の基板を構成する板ガラス１に
銀ペーストを用いて給電用配線２を、スクリーン印刷に
よ多形成し、前記配線と下地電極５とを電気的に絶縁す
るため、ＰｂＯを主成分とする電気絶縁層３をスクリー
ン印刷によ多形成し、次にスルーホール４を介して給電
用配＃！２と接するリン甲状グラファイトからなる下地
電極５を同様に形成する。この下地電極５の上に平均粒
子径３〜４μｍ０Ｚｎｓ：Ａｇ 、 ＣＪ！青色発光蛍
光体層を、平均層厚が１０〜１５μｍＫ？ｚるように印
刷する。更に上記青色発光蛍光体層の上に、平均粒子径
８〜９１１ｒｒ１のＺｎＳ： Ａｇ 、 ＣＪ青青色発
光蛍光体音、平均膜厚が１０〜２０岬になるように印刷
し、所望の青色発光蛍光体層を得る。FIG. 3 is a sectional view of the anode of the fluorescent display tube according to the present invention. In FIG. 3, a power supply wiring 2 is formed by screen printing using silver paste on a plate glass 1 constituting a substrate of an anode, and in order to electrically insulate the wiring and a base electrode 5, PbO is mainly used. The electrical insulating layer 3 as a component is formed by screen printing, and then the power supply wiring is formed through the through hole 4! A base electrode 5 made of phosphorylated graphite in contact with 2 is formed in the same manner. On this base electrode 5, Zns:Ag, CJ! with an average particle diameter of 3 to 4 μm is deposited. The blue-emitting phosphor layer has an average layer thickness of 10 to 15 μmK? Print to make it look like a z. Further, on the above blue-emitting phosphor layer, ZnS:Ag, CJ blue-blue-emitting phosphor having an average particle diameter of 8 to 911rr1 is printed so that the average film thickness is 10 to 20 mm, thereby forming the desired blue-emitting phosphor layer. Get the body layer.
以上の様にして、製作した蛍光表示管の輝度特性及び蛍
光膜の耐衝撃性を測定しだ所、従来品に比べ輝度が１５
チ改善され、耐衝撃性は３０チ改善されるという好結果
を得た。When we measured the brightness characteristics of the fluorescent display tube manufactured as described above and the impact resistance of the fluorescent film, we found that the brightness was 15% lower than that of the conventional product.
Good results were obtained in which the impact resistance was improved by 30 degrees.
又、第４図は本発明の別の実施例を示す。Further, FIG. 4 shows another embodiment of the present invention.
陽極基板を構成する板ガラス１にＭを１〜１．５μｍの
厚さにスパッタ法によって被着しフォトエツチング法に
よって上記Ｍからなる給電用配線２と、下地電極群５を
形成し、この電極群を除いた部分にガラス質絶縁層３を
印刷によ多形成する。上記下地電極群に平均粒子径２〜
３μのＺｎ Ｏ： Ｚｎ青緑色発光蛍光体を平均層厚１
２〜１５μｍになるよう印刷形成する。M is deposited on the plate glass 1 constituting the anode substrate to a thickness of 1 to 1.5 μm by sputtering, and a power supply wiring 2 made of the above M and a base electrode group 5 are formed by photoetching. A vitreous insulating layer 3 is formed by printing on the area other than the . The above base electrode group has an average particle size of 2~
3μ ZnO: Zn blue-green emitting phosphor with an average layer thickness of 1
Printing is performed to have a thickness of 2 to 15 μm.
（５）効果の説明
以上の様にして、製作した蛍光表示管の輝度特性及び耐
衝撃性を測定した所、従来品に比し、４０％輝度が向上
し、蛍光体の耐衝撃性も約５０％向上した。(5) Description of effects When we measured the brightness characteristics and impact resistance of the fluorescent display tube manufactured as described above, we found that the brightness was improved by 40% compared to conventional products, and the impact resistance of the phosphor was also approximately Improved by 50%.
前述した２つの実施例は、 Ｚｎ８ ：Ａｇ、Ｃ１青色
蛍光体及びＺｎＯ：Ｚｎ青緑色蛍光体における２種類の
平均粒子径をもつ蛍光体層に関する結果であるが、他の
一例としてＭ電極上に平均粒子径１０ ｔｔｍのＺｎＳ
：Ａｕ、Ａｔ黄色発光蛍光体層を、層厚１５μｍ形成す
る前に予め平均粒子径が１０μｍよルも小さいＺｎＳ
： Ａｕ 、Ａｔ黄色発光蛍光体層を層厚１５岬形成し
た場合の平均粒子径比（＝小なる平均粒子径／′犬なる
平均粒子径）、と輝度比の関係を示す。この結果は示す
如く平均粒子径比が４０〜・５０％において、本発明に
よる蛍光表示管の輝度が従来に比し、５０％向上した。The two examples described above are results regarding phosphor layers having two types of average particle diameters in Zn8:Ag, C1 blue phosphor and ZnO:Zn blue-green phosphor, but as another example, ZnS with an average particle size of 10 ttm
:Au, At Before forming a yellow light-emitting phosphor layer with a layer thickness of 15 μm, ZnS with an average particle diameter smaller than 10 μm was prepared in advance.
: The relationship between the average particle diameter ratio (=small average particle diameter/'dog average particle diameter) and brightness ratio when an Au, At yellow light-emitting phosphor layer is formed with a layer thickness of 15 capes is shown. As shown in the results, when the average particle diameter ratio was 40 to 50%, the luminance of the fluorescent display tube according to the present invention was improved by 50% compared to the conventional one.
なお上記実施例は、平均粒子径の異なる２種類の蛍光体
について得られた結果であるが、接触面積の減少を防ぐ
ため上記平均粒子径比が１以下であれば、複数種類の平
均粒子径をもつ蛍光体によシ、蛍光体層を形成すること
が有効であるのは言うまでもない。又、蛍光表示管にお
いて形成される蛍光体層においては、 ＺｎＯ： Ｚｎ
蛍光体を除き導電材料として和、０．粉末が混合されて
いることが一般的であるが、゛本発明における蛍光体の
平均粒子径とはＩｎ、Ｏ，混合後のそれではないことは
言うまでもない。Note that the above examples are results obtained for two types of phosphors with different average particle sizes, but in order to prevent a decrease in the contact area, if the above average particle size ratio is 1 or less, the average particle size of multiple types Needless to say, it is effective to form a phosphor layer using a phosphor having the following properties. In addition, in the phosphor layer formed in the fluorescent display tube, ZnO: Zn
As a conductive material excluding the phosphor, the sum is 0. Although powders are generally mixed, it goes without saying that the average particle diameter of the phosphor in the present invention is not that after mixing In and O.
【図面の簡単な説明】
第１図及び第２図は、従来陽極基板の拡大断面図である
。
第３図及び第４図は、本発明の蛍光表示管において使用
される陽極基板の拡大断面図である。
第５図は、Ｍ下地電極に平均粒子径が１０虜 のＺｎ
Ｓ ： Ａｕ 、 ＡＩ黄色発光蛍光体層を層厚１５Ｉ
ｘｎ 形成する前に予め平均粒子径が１０μｍよシも小
さい、Ｚｎ８：Ａｕ、Ａ／黄色発光蛍光体層を層厚１５
μｍ形成した場合の平均粒子径比と輝度比の関係を示す
。BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are enlarged sectional views of a conventional anode substrate. 3 and 4 are enlarged sectional views of an anode substrate used in the fluorescent display tube of the present invention. Figure 5 shows Zn with an average particle size of 10 mm on the M base electrode.
S: Au, AI yellow light emitting phosphor layer with a layer thickness of 15I
xn Before forming, a Zn8:Au, A/yellow-emitting phosphor layer with an average particle diameter as small as 10 μm was formed in a layer thickness of 15 μm.
The relationship between the average particle diameter ratio and the brightness ratio in the case of μm formation is shown.
Claims (1)
極を有する蛍光表示管において、平均粒子径Ａなる蛍光
体層を形成するに当たり、予め、前記平均粒子径Ａより
も、小なる平均粒子径からなる。少く共一層以上の蛍光
体層を形成したことを特徴とする蛍光表示管。In a fluorescent display tube having an anode on which a phosphor layer is formed and a cathode facing the phosphor layer, when forming a phosphor layer having an average particle diameter A, an average particle size smaller than the average particle diameter A is prepared in advance. Consists of particle size. A fluorescent display tube characterized by forming at least one phosphor layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12779784A JPS617552A (en) | 1984-06-21 | 1984-06-21 | Fluorescent display tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12779784A JPS617552A (en) | 1984-06-21 | 1984-06-21 | Fluorescent display tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS617552A true JPS617552A (en) | 1986-01-14 |
Family
ID=14968909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12779784A Pending JPS617552A (en) | 1984-06-21 | 1984-06-21 | Fluorescent display tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS617552A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140050595A (en) | 2011-03-22 | 2014-04-29 | 유니챰 가부시키가이샤 | Individual packing product |
-
1984
- 1984-06-21 JP JP12779784A patent/JPS617552A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140050595A (en) | 2011-03-22 | 2014-04-29 | 유니챰 가부시키가이샤 | Individual packing product |
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