JPH06139972A - Image display element - Google Patents
Image display elementInfo
- Publication number
- JPH06139972A JPH06139972A JP28572892A JP28572892A JPH06139972A JP H06139972 A JPH06139972 A JP H06139972A JP 28572892 A JP28572892 A JP 28572892A JP 28572892 A JP28572892 A JP 28572892A JP H06139972 A JPH06139972 A JP H06139972A
- Authority
- JP
- Japan
- Prior art keywords
- image display
- container
- glass
- glass frit
- display element
- 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
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高電圧を利用し、電子
ビ−ムを照射するタイプのに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a type of irradiating an electron beam by utilizing a high voltage.
【０００２】[0002]
【従来の技術】従来は、ガラス製表容器の画像部分と裏
容器の間に高電圧を負荷し、蛍光体を発光させ、画像表
示するタイプの画像表示素子の表容器に、ソ−ダライム
シリカ・ガラスのみ用いていた。2. Description of the Related Art Conventionally, a high voltage is applied between an image portion and a back container of a glass front container to cause a fluorescent substance to emit light, and a soda lime silica. Only glass was used.
【０００３】[0003]
【発明が解決しようとする課題】薄い板ガラスから成型
された、容器高さ約４０ｍｍの表容器に塗布された蛍光
体に、約１０数Ｋｖ以上の高電圧を負荷し、蛍光体に電
子ビ−ムを照射すると、ガラス容器に高電圧が負荷さ
れ、微少であはるが厚み方向に電流が流れ、外表面にリ
−ク電流として流れる。これは、ガラス成分のＮａがイ
オン化し、外表面に移動する為に起こるものである。外
表面に出たリ−ク電流は、表容器表面をつたわって裏容
器の方に流れてゆく。それに伴い電子の流れは、裏容器
の方から表容器外表面に流れる。この現象は、雰囲気の
湿度が高いほど表面抵抗が下がりグランドレベルになる
ため起こりやすい。この電子によって表容器の外表面に
おいては、Ｎａイオンが還元されＮａとなり、そのＮａ
が湿気の水分と反応し、アルカリ溶液となる。特にガラ
スの表容器とガラスフリットの界面においては、このア
ルカリ溶液によりガラスフリットが腐食されガラスフリ
ットの強度劣化を招き、やがては、破壊につながるもの
である。本発明は、この様な湿気に伴う腐食による破壊
を防ぐためになされたものである。A phosphor coated on a front container having a container height of about 40 mm, which is molded from a thin plate glass, is loaded with a high voltage of about 10 KV or more, and an electronic beam is applied to the phosphor. When the glass is irradiated, a high voltage is applied to the glass container, and a slight current flows in the thickness direction, and a leak current flows to the outer surface. This occurs because Na of the glass component is ionized and moves to the outer surface. The leak current generated on the outer surface passes through the surface of the front container and flows toward the back container. Accordingly, the flow of electrons flows from the back container to the outer surface of the front container. This phenomenon is likely to occur because the higher the humidity of the atmosphere, the lower the surface resistance and the ground level. These electrons reduce Na ions to Na on the outer surface of the outer container,
Reacts with the moisture in the humidity to form an alkaline solution. In particular, at the interface between the glass front container and the glass frit, the alkaline solution corrodes the glass frit, leading to deterioration of the strength of the glass frit, and eventually the glass frit is destroyed. The present invention has been made to prevent such damage due to corrosion due to moisture.
【０００４】[0004]
【課題を解決するための手段】上記問題を解決するため
に本発明の画像表示素子は、高電圧が供給されるアノ−
ド端子を含む表容器の側面部分外周とガラスフリット部
にテフロンコ−ティングを施し、リ−ク電流を軽減して
やると共に、テフロンコ−ティングの防湿効果により表
容器の湿気との反応を抑さえるものである。In order to solve the above problems, the image display device of the present invention has an anode to which a high voltage is supplied.
Teflon coating is applied to the outer circumference of the front container including the lead terminals and the glass frit to reduce the leak current, and the moisture-proof effect of Teflon coating suppresses the reaction with moisture in the front container. .
【０００５】[0005]
【作用】本発明は、テフロンコ−ティングを施すことに
より、表容器の厚み方向の抵抗値を高くし、リ−ク電流
を軽減すると共に、外表面に出たリ−ク電流に対しても
表面抵抗が高い為、さらにリ−ク電流を軽減させ、表容
器と裏容器との間に流れるリ−ク電流を抑さえ、電子の
供給を少なくすることにより、Ｎａイオンの還元を抑さ
え、且つ、防湿効果により、湿気によるアルカリ溶液化
を抑えることができ、アルカリ溶液によるガラスフリッ
トの腐食を防ぎ、ガラスフリットの強度劣化による破壊
を無くすものである。According to the present invention, by applying Teflon coating, the resistance value in the thickness direction of the front container is increased, the leak current is reduced, and the surface is also protected against the leak current generated on the outer surface. Since the resistance is high, the leak current is further reduced, the leak current flowing between the front container and the back container is suppressed, and the supply of electrons is reduced to suppress the reduction of Na ions, and With the moisture-proof effect, it is possible to suppress the formation of an alkaline solution due to moisture, prevent the corrosion of the glass frit due to the alkaline solution, and eliminate the destruction due to the strength deterioration of the glass frit.
【０００６】[0006]
【実施例】以下、本発明の一実施例の画像表示素子つい
て、図面を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An image display device according to an embodiment of the present invention will be described below with reference to the drawings.
【０００７】図１において、１は、ソ−ダライムシリカ
・ガラス製の表容器。２は、高圧を供給するアノ−ド端
子。３は、表容器２の画像部分に形成された蛍光体。４
は、信号電極、偏向電極等よりなる面電極。５は、陰極
を有する裏容器である。６は、表容器１と裏容器５とを
接着接合するガラスフリットである。７は、表容器１と
ガラスフリット６の外側面を一周する様にスプレ−にて
塗布されたテフロンコ−ティング層である。In FIG. 1, reference numeral 1 is a front container made of soda lime silica glass. 2 is an anode terminal for supplying high voltage. 3 is a phosphor formed on the image portion of the front container 2. Four
Is a surface electrode including a signal electrode and a deflection electrode. 5 is a back container having a cathode. Reference numeral 6 is a glass frit for bonding and joining the front container 1 and the back container 5. Reference numeral 7 is a Teflon coating layer which is applied by a spray so as to go around the outer surfaces of the front container 1 and the glass frit 6.
【０００８】次にこの一実施例の動作について説明す
る。図１において、表容器１にはアノ−ド端子２より高
電圧が供給され画像面部に塗布された蛍光体３に一様に
高電圧がかかっている。一方、面電極４を通過して出て
くる電子ビ−ムは蛍光体３をたたいて蛍光体３を光らせ
るが、それと同時に２次電子を放出する為に表容器１の
内壁はさらにチャ−ジアップする。この為、絶縁物であ
る表容器１は内壁側と外壁側とで電気的分極を起こし、
内壁はプラスとなり外壁はマイナスとなり、ガラス中の
Ｎａイオンが内壁から外壁に向かって移動し、微少では
あるが電流が流れることになる。しかし、テフロンコ−
ティング層７の絶縁層が外壁に施されているため、表容
器１の厚み方向の抵抗値は高くなりリ−ク電流は軽減さ
れる。Next, the operation of this embodiment will be described. In FIG. 1, a high voltage is supplied to the front container 1 from an anode terminal 2, and a high voltage is uniformly applied to the phosphor 3 applied to the image surface portion. On the other hand, the electron beam passing through the surface electrode 4 strikes the phosphor 3 to cause the phosphor 3 to emit light, but at the same time, the secondary wall emits secondary electrons. Ji up. For this reason, the surface container 1 which is an insulator causes electrical polarization on the inner wall side and the outer wall side,
The inner wall becomes positive and the outer wall becomes negative, Na ions in the glass move from the inner wall to the outer wall, and a current flows though it is minute. However, Teflon
Since the insulating layer of the coating layer 7 is applied to the outer wall, the resistance value in the thickness direction of the surface container 1 is increased and the leak current is reduced.
【０００９】又、表容器１の外表面に出たリ−ク電流は
側壁をつたって裏容器５へとながれてゆくが、同様に、
テフロンコ−ティング層７の絶縁層が外壁に施されてい
るため、表面抵抗が高くなり側壁をつたって裏容器５へ
と流れるリ−ク電流はさらに軽減される。これにより、
電子の供給を抑制することができ、Ｎａイオンの還元
は、抑さえられ、湿気によるアルカリの溶液化も抑えら
れる。又、テフロンコ−ティング層７そのものによる防
湿効果により、湿気によるアルカリ溶液化はさらに抑え
らる。このことによりガラスフリットの腐食は防がれ、
強度劣化による破壊を無くすことができる。この状態で
８０℃×８０％の恒温恒湿槽の中で長時間放置したが、
ガラスフリットの腐食や、画像表示素子の破壊に到るこ
とはなかった。Further, the leak current that has come out to the outer surface of the front container 1 flows along the side wall to the back container 5, but similarly,
Since the insulating layer of the Teflon coating layer 7 is provided on the outer wall, the surface resistance is increased and the leak current flowing through the side wall to the back container 5 is further reduced. This allows
The supply of electrons can be suppressed, the reduction of Na ions can be suppressed, and the alkali solution due to moisture can also be suppressed. Further, due to the moisture-proof effect of the Teflon coating layer 7 itself, the formation of an alkaline solution due to moisture is further suppressed. This prevents corrosion of the glass frit,
Destruction due to strength deterioration can be eliminated. In this state, it was left for a long time in an 80 ° C x 80% constant temperature and humidity chamber.
The glass frit was not corroded and the image display element was not destroyed.
【００１０】ここで、従来および本願発明により構成さ
れる画像素子の実験を行い比較すると約１００時間経過
後にガラスフリットの腐食を２〜３ヶ所認め、約４００
時間経過後にガラスフリットの腐食部をオリジンとした
破壊が起こった。[0010] Here, when the image devices constructed according to the prior art and the present invention are tested and compared, after about 100 hours, corrosion of the glass frit is recognized at two or three places, and about 400.
After the lapse of time, destruction occurred with the corroded part of the glass frit as the origin.
【００１１】[0011]
【発明の効果】本発明の方法によると、画像表示素子の
リ−ク電流に起因するガラスフリット部の腐食や、その
腐食に伴う破壊を防止することができ、信頼性の高い画
像表示素子を得ることができる。According to the method of the present invention, it is possible to prevent the corrosion of the glass frit portion due to the leak current of the image display element and the destruction due to the corrosion, and to provide a highly reliable image display element. Obtainable.
【図１】本発明の一実施例における画像表示素子の要部
拡大断面図FIG. 1 is an enlarged sectional view of an essential part of an image display device according to an embodiment of the present invention.
１ 裏容器 ２ アノ−ド端子 ３ 蛍光体 ４ 面電極 ５ 裏容器 ６ ガラスフリット ７ テフロンコ−ティング層（絶縁層） 1 Back Container 2 Anode Terminal 3 Phosphor 4 Surface Electrode 5 Back Container 6 Glass Frit 7 Teflon Coating Layer (Insulating Layer)
Claims (2)
容器と、陰極を設けた裏容器と、両容器の間に設けられ
た面電極を備え、前記表容器と裏容器とをガラスフリッ
トにて封着してなる高真空度の画像表示素子において、
画像面を除く表容器と裏容器の外表面に、テフロンコ−
ティングを施したことを特徴とする画像表示素子。1. A glass front container having a phosphor coated on the image side, a back container provided with a cathode, and a surface electrode provided between the two containers, wherein the front container and the back container are made of glass. In a high vacuum image display device that is sealed with a frit,
On the outer surface of the front and back containers excluding the image side,
An image display device characterized by being coated.
イムシリカ・ガラスのＮａイオンをＫイオンで交換し、
耐電子線ブラウニング性能を付与したガラスからなる表
容器であることを特徴とする請求項１記載の画像表示素
子。2. A glass front container basically exchanges Na ions of soda lime silica glass with K ions,
The image display device according to claim 1, wherein the image display device is a front container made of glass having electron beam browning resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28572892A JPH06139972A (en) | 1992-10-23 | 1992-10-23 | Image display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28572892A JPH06139972A (en) | 1992-10-23 | 1992-10-23 | Image display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06139972A true JPH06139972A (en) | 1994-05-20 |
Family
ID=17695274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28572892A Pending JPH06139972A (en) | 1992-10-23 | 1992-10-23 | Image display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06139972A (en) |
-
1992
- 1992-10-23 JP JP28572892A patent/JPH06139972A/en active Pending
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