JPH05159705A - Method of testing reliability of picture display element - Google Patents
Method of testing reliability of picture display elementInfo
- Publication number
- JPH05159705A JPH05159705A JP32420491A JP32420491A JPH05159705A JP H05159705 A JPH05159705 A JP H05159705A JP 32420491 A JP32420491 A JP 32420491A JP 32420491 A JP32420491 A JP 32420491A JP H05159705 A JPH05159705 A JP H05159705A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- reliability
- alkaline component
- container
- glass frit
- 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
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (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
ビームを照射するタイプの画像表示素子の信頼性試験方
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reliability test method for an image display device of the type which utilizes a high voltage and irradiates an electron beam.
【0002】[0002]
【従来の技術】従来より、画像表示素子の信頼性試験と
しては、確認の目的に応じ、種々様々な試験が、加速テ
ストを含めておこなわれている。その中で、ソーダライ
ムシリカ・ガラスを使用した画像表示素子においては、
雰囲気温度が高かったり、長時間動作をさせていると、
給電用リード端子間の絶縁不良が発生したり、表容器と
ガラスフリット界面にアルカリ成分が析出したり、さら
には、表容器のガラスシール部にクラックが発生すると
いった、シール部における諸問題が発生していた。これ
は、その成分中に含まれるアルカリ成分が、時間と共に
ガラスフリットの中に拡散して行きガラスフリット中の
酸化鉛を還元させ金属鉛として析出させる為と考えられ
ている。又、表容器とガラスフリット界面の諸問題につ
いても同様に、表容器のガラスフリット界面にアルカリ
成分や金属鉛が析出し、表容器とガラスフリットとの接
着強度を低下させたり、表容器のガラスフリット界面に
金属鉛が析出することにより絶縁破壊をおこし、表容器
側にクラックを発生させたりして、画像表示素子が破壊
することがあった。この様な諸問題は、数千時間動作さ
せてやっと確認できるといったレベルであった。2. Description of the Related Art Conventionally, as a reliability test of an image display device, various tests including an acceleration test have been carried out according to the purpose of confirmation. Among them, in the image display device using soda lime silica glass,
If the ambient temperature is high or you are operating for a long time,
Various problems occur in the sealing part, such as insulation failure between the power supply lead terminals, precipitation of alkaline components at the interface between the surface container and glass frit, and cracks in the glass sealing part of the surface container. Was. It is considered that this is because the alkaline component contained in the component diffuses into the glass frit with time to reduce the lead oxide in the glass frit and deposit it as metallic lead. In addition, regarding various problems of the surface container and the glass frit interface, similarly, alkaline components and metallic lead are deposited on the surface of the glass frit interface of the surface container to reduce the adhesive strength between the surface container and the glass frit, and Precipitation of metallic lead at the interface of the frit causes dielectric breakdown, which may cause cracks on the side of the front container, resulting in destruction of the image display device. Such problems were at the level where they could be confirmed only after operating for thousands of hours.
【0003】[0003]
【発明が解決しようとする課題】従って、従来の確認方
法では、対策を打ったとしてもその信頼性の確認に非常
に時間がかかり、開発期間を長くしていた。Therefore, in the conventional confirmation method, even if a countermeasure is taken, it takes a very long time to confirm the reliability, and the development period is lengthened.
【0004】本発明は、信頼性の確認を短時間で行い、
開発期間の短縮を目的とするものである。The present invention confirms reliability in a short time,
The purpose is to shorten the development period.
【0005】[0005]
【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の信頼性試験方法は、雰囲気の
温度を上げ、且つ、給電用リード端子をグランドに落と
して、定格の高電圧より高い高電圧を印加し、加速テス
トを行うものである。In order to solve the above problems, the reliability test method of the image display device of the present invention is to raise the temperature of the atmosphere and to drop the power supply lead terminal to the ground to obtain a high rating. The acceleration test is performed by applying a high voltage higher than the voltage.
【0006】[0006]
【作用】本発明は、雰囲気の温度を上げてやることによ
りガラス中のアルカリ成分の移動を活発にさせ、且つ、
給電用リード端子をグランドに落として、定格の高電圧
より高い高電圧を印加することによってさらに大きな電
位差を持たせ、ガラス中のアルカリ成分のガラスフリッ
ト側への拡散、析出を加速して行うものである。The present invention activates the movement of the alkaline component in the glass by raising the temperature of the atmosphere, and
By dropping the power supply lead terminal to the ground and applying a high voltage higher than the rated high voltage to create a larger potential difference, the diffusion and precipitation of the alkaline component in the glass to the glass frit side is accelerated. Is.
【0007】[0007]
【実施例】以下、本発明の一実施例の画像表示素子の信
頼性試験方法について、図面を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A reliability test method for an image display device according to an embodiment of the present invention will be described below with reference to the drawings.
【0008】図1において、1は、ソーダライムシリカ
・ガラス製の表容器。2は、高圧を供給するアノード端
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、面電極4へ
の給電用リード端子でありグランドとなっている。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 that adheres and joins the front container 1 and the back container 5. Reference numeral 7 is a lead terminal for feeding power to the surface electrode 4 and serves as a ground.
【0009】次にこの一実施例の作用について説明す
る。図1において、画像表示素子は、例えば、120℃
の恒温槽に入れ、表容器1にはアノード端子2より、例
えば、15Kvの高電圧を供給し、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への給電用リード端子7は、グランドになってい
る。この為、表容器1の中のアルカリ成分は、イオン化
して+となり、グランドになっている給電用リード端子
7のほうに移動して行くことになる。この試験を1日お
こなったところ、表容器1とガラスフリット6との界面
にアルカリ成分の析出、さらに、ガラスフリット6への
拡散に伴う給電用リード端子7間の絶縁抵抗の低下、さ
らには、これと並行して、表容器1のガラスフリット6
との界面に、金属鉛の析出とクラックの発生を確認する
ことができた。このために画像表示素子の信頼性を確か
めることができた。つまり本発明の方法のような環境を
つくることで画像表示素子の信頼性試験が1日で行え
た。Next, the operation of this embodiment will be described. In FIG. 1, the image display element is, for example, 120 ° C.
A high voltage of, for example, 15 Kv is supplied to the front container 1 from the anode terminal 2, and the phosphor 3 applied to the image surface portion is uniformly applied with the high voltage. On the other hand, the lead terminal 7 for feeding the surface electrode 4 is grounded. Therefore, the alkaline component in the surface container 1 is ionized to become + and moves to the power supply lead terminal 7 which is the ground. When this test was carried out for one day, precipitation of an alkaline component at the interface between the surface container 1 and the glass frit 6, and further reduction of the insulation resistance between the power supply lead terminals 7 due to diffusion into the glass frit 6, In parallel with this, the glass frit 6 of the front container 1
It was possible to confirm the precipitation of metallic lead and the occurrence of cracks at the interface with. Therefore, the reliability of the image display device could be confirmed. That is, the reliability test of the image display device can be performed in one day by creating an environment like the method of the present invention.
【0010】[0010]
【発明の効果】本発明の画像表示素子の信頼性試験方法
によると、ガラス中のアルカリ成分の移動を活発にさ
せ、ガラスフリット側への拡散、析出を加速して短時間
で行うことができる為、それに伴う諸問題や、その対策
の信頼性を短時間に確認することができ、開発期間の短
縮が図れるものである。According to the reliability test method of the image display device of the present invention, the movement of the alkaline component in the glass can be activated, and the diffusion and precipitation to the glass frit side can be accelerated to be performed in a short time. Therefore, it is possible to confirm the problems associated therewith and the reliability of the countermeasures in a short time, and the development period can be shortened.
【図1】本発明の一実施例における画像表示素子の信頼
性試験方法の要部拡大断面図FIG. 1 is an enlarged cross-sectional view of a main part of a reliability test method for an image display device according to an embodiment of the present invention.
1 裏容器 2 アノード端子 3 蛍光体 4 面電極 5 裏容器 6 ガラスフリット 7 給電用リード端子 1 Back Container 2 Anode Terminal 3 Phosphor 4 Surface Electrode 5 Back Container 6 Glass Frit 7 Power Supply Lead Terminal
Claims (1)
シリカ・ガラス製の表容器と、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、且つ、前記ガラス
フリット部に、面電極への給電用リード端子をはさみこ
んだ高真空度の画像表示素子の信頼性試験方法におい
て、雰囲気の温度を上げ、かつ前記給電用リード端子を
グラウンドに落とし、定格の高電圧より高い高電圧を印
加し、加速テストを行うことを特徴とする画像表示素子
の信頼性試験方法。1. A front container made of soda lime silica glass whose surface is coated with a phosphor, and a back container provided with a cathode,
A surface electrode provided between the both containers is provided, the front container and the back container are sealed with a glass frit, and the glass frit portion is sandwiched with a lead terminal for supplying power to the surface electrode. In the reliability test method of the image display device of vacuum degree, the temperature of the atmosphere is raised, the power supply lead terminal is dropped to the ground, a high voltage higher than the rated high voltage is applied, and an acceleration test is performed. Test method for reliability of image display device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32420491A JPH05159705A (en) | 1991-12-09 | 1991-12-09 | Method of testing reliability of picture display element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32420491A JPH05159705A (en) | 1991-12-09 | 1991-12-09 | Method of testing reliability of picture display element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH05159705A true JPH05159705A (en) | 1993-06-25 |
Family
ID=18163221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32420491A Pending JPH05159705A (en) | 1991-12-09 | 1991-12-09 | Method of testing reliability of picture display element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05159705A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2765391A1 (en) * | 1997-06-25 | 1998-12-31 | Futaba Denshi Kogyo Kk | Display device with field emitting cathode and high voltage anode |
-
1991
- 1991-12-09 JP JP32420491A patent/JPH05159705A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2765391A1 (en) * | 1997-06-25 | 1998-12-31 | Futaba Denshi Kogyo Kk | Display device with field emitting cathode and high voltage anode |
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