JPH02106861A - Fluorescent character display tube - Google Patents
Fluorescent character display tubeInfo
- Publication number
- JPH02106861A JPH02106861A JP25842188A JP25842188A JPH02106861A JP H02106861 A JPH02106861 A JP H02106861A JP 25842188 A JP25842188 A JP 25842188A JP 25842188 A JP25842188 A JP 25842188A JP H02106861 A JPH02106861 A JP H02106861A
- Authority
- JP
- Japan
- Prior art keywords
- display tube
- insulating barrier
- fluorescent display
- insulating
- charge
- 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
- 230000004888 barrier function Effects 0.000 claims abstract description 32
- 239000011521 glass Substances 0.000 claims abstract description 17
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 21
- 238000007639 printing Methods 0.000 abstract description 8
- 238000002844 melting Methods 0.000 abstract description 7
- 230000008018 melting Effects 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052709 silver Inorganic materials 0.000 abstract description 3
- 239000004332 silver Substances 0.000 abstract description 3
- 238000004070 electrodeposition Methods 0.000 abstract description 2
- 238000010894 electron beam technology Methods 0.000 abstract description 2
- 238000001962 electrophoresis Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 12
- 239000011810 insulating material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000010408 film Substances 0.000 description 6
- 239000006059 cover glass Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は蛍光表示管に係シ、特にグラフィック蛍光表示
管の微細パターンを高輝度で発光させる表示装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fluorescent display tube, and more particularly to a display device that emits a fine pattern of a graphic fluorescent display tube with high brightness.
従来、この種のグラフィック表示装置は、第３図の如き
構造となっている。即ち、ガラス基板３１上に透明電極
３２を薄膜形成法で形成する。しかるのちに１低融点ガ
ラスを主成分とする絶縁材料で絶縁障壁３３を形成する
。この絶縁障壁３３は、厚膜印刷法、もしくは感光性材
料を含む絶縁材料をガラス基板全面に塗布した後露光、
現像するフォトリソグラフィー法が用いられる。通常、
ピッチが０．３ ｍｍ以下のパターンが必要な場合、後
者の方法を用いる。さらに、透明電極３２上に酸化亜鉛
又は硫化亜鉛系等の低速電子線励起蛍光体層３４が形成
される。このようにして形成された陽極基板は、カバー
ガラス３５とともに真空容器を形成する。この真空容器
内に設置された陰極フィラメント３６から放射された電
子がメツシュ状或いはワイヤー状のグリッド３７で加速
制御され、前記蛍光体層３４に衝突して発光が得られ、
同図左方向から表示が観察される。観察方向は、右方向
、つまシカバーガラス３５を通して見ることも可能であ
る。Conventionally, this type of graphic display device has a structure as shown in FIG. That is, the transparent electrode 32 is formed on the glass substrate 31 by a thin film forming method. Thereafter, an insulating barrier 33 is formed of an insulating material whose main component is low melting point glass. This insulating barrier 33 is formed using a thick film printing method or by applying an insulating material containing a photosensitive material to the entire surface of the glass substrate and then exposing it to light.
A photolithographic method of development is used. usually,
If a pattern with a pitch of 0.3 mm or less is required, the latter method is used. Further, a low-speed electron beam-excited phosphor layer 34 made of zinc oxide or zinc sulfide is formed on the transparent electrode 32 . The anode substrate thus formed forms a vacuum container together with the cover glass 35. Electrons emitted from the cathode filament 36 installed in this vacuum container are accelerated and controlled by a mesh-like or wire-like grid 37, and collide with the phosphor layer 34 to obtain light emission.
The display is observed from the left side of the figure. The observation direction is to the right, and it is also possible to see through the tab cover glass 35.
前述した従来のグラフィック蛍光表示管では、次の如き
欠点がある。The conventional graphic fluorescent display tube described above has the following drawbacks.
即ち、前記のように陰極フィラメント３６から放射され
、グリッド３７で加速、制御された電子はプラス電位が
印加された蛍光体層３４だけでなく、蛍光体をとシ囲む
、或いは挾みこむ絶縁障壁３３にも衝突する。このため
、絶縁障壁３３はマイナスにチャージアップする。この
チャージアップは短時間で生じ、このチャージによる電
界によって蛍光体層３４に向うべき電子が偏向され、蛍
光体層３４全体に入射しにくくなる。かくして、表示パ
ターンのピッチが小さくなると、この絶縁障壁チャージ
アップの影響は犬きくなシ、大幅な輝度低下がひきおこ
される。That is, the electrons emitted from the cathode filament 36 and accelerated and controlled by the grid 37 as described above not only affect the phosphor layer 34 to which a positive potential is applied, but also the insulating barrier 33 that surrounds or sandwiches the phosphor. also collides. Therefore, the insulation barrier 33 is negatively charged up. This charge-up occurs in a short time, and the electric field caused by this charge deflects electrons that should be directed toward the phosphor layer 34, making it difficult for them to enter the entire phosphor layer 34. Thus, as the pitch of the display pattern becomes smaller, the effect of this insulation barrier charge-up becomes more severe, causing a significant reduction in brightness.
本発明の目的は、前記欠点が解決され、チャージアップ
低減でき輝度低下が回避できるようにした蛍光表示管を
提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a fluorescent display tube in which the above-mentioned drawbacks are solved, charge-up can be reduced, and reduction in brightness can be avoided.
本発明の蛍光表示管の構成は、ガラス基板に形成された
電極上に蛍光体がドツト状もしくはストライブ状パター
ン塗布され、前記蛍光体からなるパターンどうしが絶縁
障壁で分離されてなる陽極基板を相する蛍光表示管にお
いて、前記絶縁障壁上に導電層が形成されていることを
特徴とする。The structure of the fluorescent display tube of the present invention includes an anode substrate in which phosphor is coated in a dot-like or stripe-like pattern on an electrode formed on a glass substrate, and the patterns made of the phosphor are separated from each other by an insulating barrier. A corresponding fluorescent display tube is characterized in that a conductive layer is formed on the insulating barrier.
次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例の蛍光表示管の断面図である
。同図において、本実施例の蛍光表示管は、ガラス基板
１上に、透明電極２がストライブ状に形成されており、
これらの電極２を分離するように絶縁障壁３が設けられ
ている。絶縁障壁３は約０．４５ｍ＋のピッチとなるよ
うに、低融点ガラス粒子を主成分とするペーストを厚膜
印刷法で塗布し、しかる後約６００℃の温度で焼成する
ことで得られた。この後、銀ペーストを絶縁障壁３の頭
頂部のみにやはり厚膜印刷法で塗布し、約５５０℃の温
度で焼成し、導電層４を形成した。この導電層４は延引
され、蛍光表示管外のリード端子（図示しない）に電気
的に接続されている。透明電極２の上には低速電子線励
起蛍光体層５が電気泳動電着法で形成されている。以上
の如き構造の陽極基板は、カバーガラス６とともに真空
容器を形成している。この容器内には、陰極フィラメン
ト７およびグリッド８が設置され、グラフィック蛍光表
示管が構成されている。即ち、本実施例のグラフィック
蛍光表示管は、絶縁障壁上に銀粒子や、グラファイト粒
子等の導電性物質、もしくは酸化ルテニウム粒子等の高
抵抗の導電性物質を塗布することを特徴とする。FIG. 1 is a sectional view of a fluorescent display tube according to an embodiment of the present invention. In the figure, the fluorescent display tube of this embodiment has a transparent electrode 2 formed in a stripe shape on a glass substrate 1.
An insulating barrier 3 is provided to separate these electrodes 2. The insulating barrier 3 was obtained by applying a paste containing low-melting point glass particles as a main component using a thick film printing method so as to have a pitch of about 0.45 m+, and then firing it at a temperature of about 600°C. Thereafter, a silver paste was applied only to the top of the insulating barrier 3 by the thick film printing method, and baked at a temperature of about 550° C. to form the conductive layer 4. This conductive layer 4 is extended and electrically connected to a lead terminal (not shown) outside the fluorescent display tube. A low-speed electron beam excited phosphor layer 5 is formed on the transparent electrode 2 by electrophoretic electrodeposition. The anode substrate having the above structure forms a vacuum container together with the cover glass 6. Inside this container, a cathode filament 7 and a grid 8 are placed, forming a graphic fluorescent display tube. That is, the graphic fluorescent display tube of this embodiment is characterized in that a conductive material such as silver particles, graphite particles, or a high-resistance conductive material such as ruthenium oxide particles is coated on the insulating barrier.
これらの導電性物質は、厚膜印刷法で通常塗布形成され
るが微細なパターンを形成する必要がある場合は次の方
法が使用される。即ち、陽極が形成されたガラス基板全
面にまず感光性物質を含む低融点ガラスペーストを塗布
する。乾燥後感光性物質を含む導電性物質ペーストを塗
布、乾燥する。These conductive substances are usually coated and formed by a thick film printing method, but when it is necessary to form a fine pattern, the following method is used. That is, first, a low melting point glass paste containing a photosensitive material is applied to the entire surface of the glass substrate on which the anode is formed. After drying, a conductive material paste containing a photosensitive material is applied and dried.
しかる後に、絶縁障壁パターンマスクを用い露光を行な
う。この露光によって低融点ガラス層、導電性物質層を
現像、エツチングする。この方法を用いることで、均一
で微細な導′屯性層を形成することが可能となる。After that, exposure is performed using an insulating barrier pattern mask. By this exposure, the low melting point glass layer and the conductive material layer are developed and etched. By using this method, it is possible to form a uniform and fine conductive layer.
前記の如き構造を持つグラフィックタイプ蛍光表示管は
、駆動回路、コントロール回路とともに表示装置を構成
する。A graphic type fluorescent display tube having the above structure constitutes a display device together with a drive circuit and a control circuit.
この表示装置では前述の導電層は電子源たる陰極フィラ
メントに対し、プラス電位が印加される。In this display device, a positive potential is applied to the conductive layer described above with respect to the cathode filament serving as an electron source.
しかしながら、この導電層からフィラメントに流れる電
流は直接は発光に寄与しない電流であり、表示装置の消
費電力を増し、又陰極フィラメントの負荷ともなる。従
って、導電層に印加される電位はチャージアップ分の電
子を速やかに除去するに十分で、かつ前記の電流が最低
となるような与え方をしなければならない。これら２つ
の要請を満足する為には導電層にはパルス状の電位が印
加させることが最適であることが明らかになった。However, the current flowing from this conductive layer to the filament does not directly contribute to light emission, increases the power consumption of the display device, and also becomes a load on the cathode filament. Therefore, the potential applied to the conductive layer must be sufficient to quickly remove the charged-up electrons and must be applied in such a manner that the current is minimized. In order to satisfy these two requirements, it has become clear that it is optimal to apply a pulsed potential to the conductive layer.
このパルス状電圧のパルス幅や、デー−ティ、タイミン
グ等は、陽極電圧、駆動出力タイミングおよび表示パタ
ーン形状、ピッチ等によって決定される。The pulse width, date, timing, etc. of this pulsed voltage are determined by the anode voltage, drive output timing, display pattern shape, pitch, etc.
第２図（ａ）乃至（ｄ）は第１図の実施例の陽極基板の
製造方法を工程順に示す断面図である。まず同図（ａ）
に示す如く、ガラス基板２１上に透明電極２２が、ピッ
チ０．３０ｍのストライプ状に形成されている。特に、
この様に微細パターンの形成は、第１図で説明した厚膜
印刷法の使用は困難であるので、以下に述べるフォトリ
ソグラフィー法を使用することが好ましい。即ち、第２
図（ｂ）の如く、全面に感光性物質を含む低融点ガラス
ペーストを塗布、乾燥して絶縁材料層２３を形成する。FIGS. 2(a) to 2(d) are cross-sectional views showing the method for manufacturing the anode substrate of the embodiment shown in FIG. 1 in order of steps. First, the same figure (a)
As shown in the figure, transparent electrodes 22 are formed in stripes with a pitch of 0.30 m on a glass substrate 21. especially,
Since it is difficult to form such fine patterns using the thick film printing method described in FIG. 1, it is preferable to use the photolithography method described below. That is, the second
As shown in Figure (b), a low melting point glass paste containing a photosensitive substance is applied to the entire surface and dried to form an insulating material layer 23.
次Ｋ、同図（Ｃ）の如く感光性物質を含む導電性物質ペ
ーストを塗布、乾燥して導電材料層２４を形成する。Next, as shown in FIG. 2C, a conductive material paste containing a photosensitive material is applied and dried to form a conductive material layer 24.
しかる後に１絶縁障壁形成部分が明部もしくは暗部とな
っている露光用マスクを用い露光を行なう。After that, exposure is carried out using an exposure mask in which one insulating barrier forming part is a bright part or a dark part.
絶縁材料層および導電材料層中の感光性物質が光硬化タ
イプであれば、前記絶縁障壁形成部分は明部、光軟化タ
イプであれば暗部となる。露光後、不要部すなわち透明
電極上の絶縁材料層および導電材料層を現像工程で除去
する。絶縁材料層形成後無光、現像を行ない絶縁障壁を
形成し、しかる後に導電材料層を塗布、露光、現像し、
導電層を形成する方法を用いることも可能であるが、工
程数の低減および絶縁障壁と導電層の位置合わせ精度向
上の観点から前記の如く、無光、現像作業を一度に行な
り方法が有効である。このようにして、第２図（ｄ）の
絶縁障壁２５と導電層２６とが高い精度で形成される。If the photosensitive material in the insulating material layer and the conductive material layer is a photocurable type, the insulating barrier forming portion will be a bright part, and if it is a photosoftening type, it will be a dark part. After exposure, unnecessary portions, that is, the insulating material layer and the conductive material layer on the transparent electrode are removed in a development step. After forming the insulating material layer, it is developed without light to form an insulating barrier, and then a conductive material layer is applied, exposed, and developed.
It is also possible to use a method of forming a conductive layer, but from the viewpoint of reducing the number of steps and improving the alignment accuracy of the insulating barrier and the conductive layer, it is effective to perform the development without light and at the same time as described above. It is. In this way, the insulating barrier 25 and the conductive layer 26 shown in FIG. 2(d) are formed with high precision.
絶縁障壁２５はサイドエツチングされ、導電層２６がオ
ーバーハングする形状となり、第１図で示した厚膜印刷
法に比べ、チャージアップ低減の効果が大きい。第２図
（ｄ）では示さないが、この後焼成工程を経て、透明電
極２２上に蛍光体層が塗布形成され、陽極基板が製造さ
れる。さらに、カバーガラス、陰極フィラメント、グリ
ッドとともに、蛍光表示管が製造される過程は第１図の
場合と同様である。The insulating barrier 25 is side-etched so that the conductive layer 26 overhangs, and the effect of reducing charge-up is greater than that of the thick film printing method shown in FIG. Although not shown in FIG. 2(d), a phosphor layer is coated on the transparent electrode 22 through a subsequent firing process, and an anode substrate is manufactured. Furthermore, the process for manufacturing the fluorescent display tube together with the cover glass, cathode filament, and grid is similar to that shown in FIG.
以上、第２図（ａ）乃至第２図（ｄ）において、電極を
形成したガラス基板全域にわたシ、感光性物質を含みか
つ低融点ガラスを主成分とする絶縁障壁の材料層、感光
性物質を含む導電材料層を順次塗布する工程と、絶縁障
壁パターン・マスクを用い露光する工程と、前記絶縁障
壁の層と導電材料層との不要部分を除去するエツチング
工程とを含むと：＼８−
とを特徴とする特に第１図のグラフィック蛍光表示管と
駆動回路およびコントロール回路とから成るグラフィッ
ク蛍光表示装置においては、前記絶縁障壁上に形成され
た導電層に正のパルス状電圧が印加されることを特徴と
する。As described above, in FIGS. 2(a) to 2(d), the entire glass substrate on which the electrodes are formed is covered with an insulating barrier material layer containing a photosensitive substance and mainly composed of low-melting glass. The method includes a step of sequentially applying a conductive material layer containing a substance, a step of exposing using an insulating barrier pattern mask, and an etching step of removing unnecessary portions of the insulating barrier layer and the conductive material layer:\8 - In particular, in the graphic fluorescent display device comprising the graphic fluorescent display tube shown in FIG. It is characterized by
以上説明したように、本発明は絶縁障壁上に導電層を形
成し、陰極フィラメントに対して正の電位を印加するこ
とで特にグラフィック蛍光表示管において生ずる絶縁障
壁のチャージアップを低減し、高い発光輝度を得ること
が出来る効果がある。As explained above, the present invention forms a conductive layer on an insulating barrier and applies a positive potential to the cathode filament, thereby reducing the charge-up of the insulating barrier that occurs particularly in graphic fluorescent display tubes, and achieving high luminescence. It has the effect of increasing brightness.
さらに、本発明は、絶縁障壁および導電層の形成は、そ
れぞれ感光性物質を含むペースト材料を用い、特にフォ
トリングラフイー法によって行なった場合には、微細表
示パターンの形成が可能となる効果がおる。特に本発明
は、導電層にパルス状の電圧を印加した場合、消費電力
を低減することが出来る効果がある。Furthermore, in the present invention, when the insulating barrier and the conductive layer are formed using a paste material containing a photosensitive substance, and in particular by a photophosphorography method, it is possible to form a fine display pattern. is. In particular, the present invention has the effect of reducing power consumption when a pulsed voltage is applied to the conductive layer.
第１図は本発明の一実施例の蛍光表示管の断面図、第２
図（ａ）乃至第２図（ｄ）は第１図の蛍光表示管の陽極
基板の製造方法を示す断面図、第３図は従来の蛍光表示
管の断面図である。FIG. 1 is a sectional view of a fluorescent display tube according to an embodiment of the present invention, and FIG.
2(a) to 2(d) are cross-sectional views showing a method of manufacturing the anode substrate of the fluorescent display tube shown in FIG. 1, and FIG. 3 is a cross-sectional view of a conventional fluorescent display tube.
１．２１．３１・・・・・・ガラス基板、２ 、２２
、３２・・・・・・透明電極、３，２５．３３・・・・
・・絶縁障壁、４，２６−・・・・・導電層、５．３４
・・・・・・蛍光体層、６，３５・・−・・・カバーガ
ラス、７．３６・・・・・・陰極フィラメント、８．３
７・・・・・・グリッド、２３・・・・・・絶縁材料層
、２４−・・・・・導電材料層。1.21.31...Glass substrate, 2, 22
, 32...Transparent electrode, 3,25.33...
...Insulating barrier, 4,26-...Conductive layer, 5.34
..... Phosphor layer, 6,35 ..... Cover glass, 7.36 ..... Cathode filament, 8.3
7... Grid, 23... Insulating material layer, 24-... Conductive material layer.
代理人 弁理士 内 原 晋Agent: Patent Attorney Susumu Uchihara
＝９− （Ｃ） 縛りび搏 へｌ =9- (C) bondage Hello
Claims (1)
しくはストライプ状パターンに塗布され、前記蛍光体か
らなるパターンどうしが絶縁障壁で分離されてなる陽極
基板を有する蛍光表示管において、前記絶縁障壁上に導
電層が形成されていることを特徴とする蛍光表示管。In a fluorescent display tube having an anode substrate in which a phosphor is coated in a dot or stripe pattern on an electrode formed on a glass substrate, and the patterns of the phosphor are separated by an insulating barrier, the insulating barrier A fluorescent display tube characterized by having a conductive layer formed thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25842188A JPH02106861A (en) | 1988-10-14 | 1988-10-14 | Fluorescent character display tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25842188A JPH02106861A (en) | 1988-10-14 | 1988-10-14 | Fluorescent character display tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02106861A true JPH02106861A (en) | 1990-04-18 |
Family
ID=17319988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25842188A Pending JPH02106861A (en) | 1988-10-14 | 1988-10-14 | Fluorescent character display tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02106861A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04123751A (en) * | 1990-09-13 | 1992-04-23 | Futaba Corp | Fluorescent printer head and manufacture thereof |
| KR100684780B1 (en) * | 2000-09-15 | 2007-02-20 | 삼성에스디아이 주식회사 | Dynamic drive type vacuum fluorescent display |
| US9343245B2 (en) | 2013-11-08 | 2016-05-17 | Lsis Co., Ltd. | Molded case circuit breaker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714360B2 (en) * | 1974-04-24 | 1982-03-24 | ||
| JPS5725454B2 (en) * | 1977-09-21 | 1982-05-29 |
-
1988
- 1988-10-14 JP JP25842188A patent/JPH02106861A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714360B2 (en) * | 1974-04-24 | 1982-03-24 | ||
| JPS5725454B2 (en) * | 1977-09-21 | 1982-05-29 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04123751A (en) * | 1990-09-13 | 1992-04-23 | Futaba Corp | Fluorescent printer head and manufacture thereof |
| KR100684780B1 (en) * | 2000-09-15 | 2007-02-20 | 삼성에스디아이 주식회사 | Dynamic drive type vacuum fluorescent display |
| US9343245B2 (en) | 2013-11-08 | 2016-05-17 | Lsis Co., Ltd. | Molded case circuit breaker |
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