JPH02239548A - Vacuum vessel of plane type image display device - Google Patents
Vacuum vessel of plane type image display deviceInfo
- Publication number
- JPH02239548A JPH02239548A JP5991189A JP5991189A JPH02239548A JP H02239548 A JPH02239548 A JP H02239548A JP 5991189 A JP5991189 A JP 5991189A JP 5991189 A JP5991189 A JP 5991189A JP H02239548 A JPH02239548 A JP H02239548A
- Authority
- JP
- Japan
- Prior art keywords
- image display
- face panel
- face plate
- back plate
- back face
- 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
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 abstract description 27
- 238000002844 melting Methods 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000008646 thermal stress Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005329 float glass Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は平板型の画像表示装置の真空容器に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vacuum container for a flat image display device.
従来の技術
平板型画像表示装置として、真空中の電子放出源と平面
状電極群とにより電子ビームを平面状蛍光面の所望の画
素に衝突させ発光させる方式や、プラズマ放電を発光に
用いる方式が開発されている。これら平板型画像表示装
置の真空容器は薄型化するため平板部分が大きくなり、
例えばガラス材を用いると耐真空強度を確保するために
ガラス材の板厚を厚くする必要があり軽量化に問題が残
る。Conventional technology As a flat panel image display device, there are two methods: one method uses an electron emission source in a vacuum and a group of planar electrodes to collide an electron beam with a desired pixel on a planar fluorescent screen to emit light, and the other method uses plasma discharge for light emission. being developed. As the vacuum containers of these flat panel image display devices become thinner, the flat panel portion becomes larger.
For example, if a glass material is used, it is necessary to increase the thickness of the glass material in order to ensure vacuum resistance strength, and there remains a problem in reducing the weight.
従って真空容器の構成材料としてガラスより許容応力の
大きい金属を用いる構造も種々提案されており、例えば
特開昭８０−１００３４４号公報がある。この場合も当
然ながら画像表示面を有するフェースパネルはガラスで
作り、このガラスと対向する背面板を金属で構成してい
る。Therefore, various structures have been proposed in which metals having a higher allowable stress than glass are used as constituent materials of the vacuum container, for example, as disclosed in Japanese Patent Application Laid-open No. 80-100344. In this case as well, the face panel having the image display surface is made of glass, and the back plate facing the glass is made of metal.
第２図は背面板に金属を用いた従来の平板型画像表示装
置の真空容器である。図【おいて１１は画像表示面を有
するフェースパネル、１２は電子放出源と平面状電極を
配列した電極構造体、１３は金属製の背面板、１４は信
号入出力端子を扶持しフェースバネル１１と背面板１３
を封着するガラスフリット層である。FIG. 2 shows a vacuum container of a conventional flat panel image display device using a metal back plate. In the figure, 11 is a face panel having an image display surface, 12 is an electrode structure in which an electron emission source and a planar electrode are arranged, 13 is a metal back plate, and 14 is a face panel 11 that supports signal input/output terminals. and back plate 13
This is a glass frit layer that seals the
ソシテフェースパネル１１はガラス材からなり容器内面
に蛍光体を塗布し容器外面はほぼ平面状である。一方、
背面板１３はフェースパネル１１に用いるガラス材の熱
膨張係数に略等しい鉄一ニッケル合金を成型したもので
ある。フェースパネル１ １、背面板１３の相互の接合
面に低融点ガラスフリットを塗布し、内部に電極構造体
１２を収納した状態で両者を組合せ、焼成炉内で４００
〜４５０℃に焼成してガラスフリットを溶融後、冷却硬
化させて接合する。その後、フェースバネル１１と背面
板１３で形成される内部空間を排気して真空容器を得て
いる。The social face panel 11 is made of a glass material, the inner surface of the container is coated with phosphor, and the outer surface of the container is substantially flat. on the other hand,
The back plate 13 is made of an iron-nickel alloy having a coefficient of thermal expansion approximately equal to that of the glass material used for the face panel 11. A low-melting glass frit is applied to the joint surfaces of the face panel 1 1 and the back plate 13, and the electrode structures 12 are housed inside, and the two are combined and heated in a firing furnace for 400 ms.
After firing at ~450°C to melt the glass frit, the glass frit is cooled and hardened to join. Thereafter, the internal space formed by the face panel 11 and the back plate 13 is evacuated to obtain a vacuum container.
発明が解決しようとする課題
このようなガラスと金属による容器構成は両者の熱膨張
係数が同じではないので、接合部において必ず熱応力が
生じる。比較的小型の画像表示装置では容器の形状も小
さくまた薄肉でよいので、フェースパネル１１と背面板
１３との接合部に生じる熱応力も小さく十分信頼性の高
い真空容器を作ることができる。Problems to be Solved by the Invention Since the glass and metal containers do not have the same coefficient of thermal expansion, thermal stress inevitably occurs at the joint. In a relatively small image display device, the shape of the container may be small and thin, so that the thermal stress generated at the joint between the face panel 11 and the back plate 13 is small, and a sufficiently reliable vacuum container can be manufactured.
しかし、比較的大型のものにな゛ると、耐真空強度を十
分確保するためにはフェースパネル１１、背面板１３と
もに肉厚を厚くする必要がある。ところが金属製の背面
板１３が厚肉になると接合部に生じる熱応力が大きくな
り、接合部においてガラスが損壊するという問題がある
。このように背面板１３の厚肉化による真空耐圧の確保
と接合時の熱応力によるガラスの損壊とは相反すること
になり、両立させることは困難であった。However, when the device becomes relatively large, it is necessary to increase the thickness of both the face panel 11 and the back plate 13 in order to ensure sufficient vacuum resistance. However, when the metal back plate 13 becomes thick, thermal stress generated at the joint increases, causing a problem in that the glass breaks at the joint. As described above, ensuring vacuum withstand pressure by increasing the thickness of the back plate 13 and preventing damage to the glass due to thermal stress during bonding conflict with each other, and it has been difficult to achieve both.
本発明はかかる課題に鑑みてなされたものであり、ガラ
ス製のフェースパネルと金属製の背面板とによる軽量か
つ高信顆性の平板型画像表示装置の真空容器を提供する
ことを目的としている。The present invention has been made in view of the above problems, and an object of the present invention is to provide a vacuum container for a flat-plate image display device that is lightweight and has high reliability, using a glass face panel and a metal back plate. .
課通を解決するための手段
本発明は上記課題を解決するため、画像表示部を有する
フェースパネルと金属製の背面板とを接合した後、背面
板に補強部材を接合して平板型画像表示装置の真空容器
を構成したことを特徴とする。In order to solve the above-mentioned problem, the present invention provides a flat image display by joining a face panel having an image display portion to a metal back plate, and then joining a reinforcing member to the back plate. It is characterized in that it constitutes a vacuum container of the device.
作 用
上記構成によれば、背面板の耐真空強度を向上させるこ
とができるので、接合部に生じる熱応力がガラスの許容
応力より小さくなるような比較的薄肉の金属製背面板と
することにより、これとフェースパネルとを信頼性高く
接合することが可能となる。Effect According to the above configuration, the vacuum strength of the back plate can be improved, so by using a relatively thin metal back plate so that the thermal stress generated at the joint is smaller than the allowable stress of the glass. , it becomes possible to join this and the face panel with high reliability.
実施例 以下本発明の一実施例を図面に基すいて説明する。Example An embodiment of the present invention will be described below with reference to the drawings.
第１図は本実施例を示す断面模式図である。FIG. 1 is a schematic cross-sectional view showing this embodiment.
第１図において、■は画像表示面を有するフェースパネ
ル、２は電子放出源と平面状電極を配列した電極構造体
、３は金属製の背面板、４は信号入出力端子を扶持し、
フェースバネル１と背面板３を封着するガラスフリット
層である。そしてフェースパネル１は、容器内面に蛍光
体を塗布したソーダフロートガラスなどの平板状ガラス
からなる。一方、背面板３はフェースバネル１に用いる
ガラス材の熱膨張係数に略等しい鉄一ニッケル合金を成
型したもので、フェースパネル１との接合部に生じる熱
応力がガラスの許容応力以下になるような板厚にしてい
る。In FIG. 1, ■ is a face panel having an image display surface, 2 is an electrode structure in which an electron emission source and a planar electrode are arranged, 3 is a metal back plate, 4 supports signal input/output terminals,
This is a glass frit layer that seals the face panel 1 and the back plate 3 together. The face panel 1 is made of flat glass such as soda float glass with a phosphor coated on the inner surface of the container. On the other hand, the back plate 3 is made of an iron-nickel alloy molded with a coefficient of thermal expansion approximately equal to that of the glass material used for the face panel 1, and is designed to ensure that the thermal stress generated at the joint with the face panel 1 is below the allowable stress of the glass. The board is thick.
フェースバネル１、背面板３の相互の接合面に低融点ガ
ラスフリットを塗布し、内部に電極構造体２を収納した
状態で両者を組合せ、焼成炉内で４００〜４５０℃に焼
成してガラスフリットを溶融後、冷却硬化させて両者を
接合する。背面板３は比較的薄肉であるのでこの時点で
は耐真空強度は十分ではない。その後、真空耐圧を向上
させるために背面板３に補強部材５を接合する。補強部
材５としては単一の金属板のほか、たとえばハニカム構
造体のような複合材料でもよい。しかる後フェースバネ
ル１と背面板３で形成される内部空間を排気して真空容
器を得ることができる。A low-melting glass frit is applied to the joint surfaces of the face panel 1 and the back panel 3, and the electrode structure 2 is housed inside the glass frit. After melting, the two are joined by cooling and hardening. Since the back plate 3 is relatively thin, its vacuum resistance is not sufficient at this point. Thereafter, a reinforcing member 5 is bonded to the back plate 3 in order to improve the vacuum withstand pressure. The reinforcing member 5 may be a single metal plate or may be a composite material such as a honeycomb structure. Thereafter, the internal space formed by the face panel 1 and the back plate 3 is evacuated to obtain a vacuum container.
なお、以上の説明では平板状ガラスによるフェースパネ
ルと金属製成型背面板とによる容器構成としたが、ガラ
ス成型フェースパネルと金属製背面平板とによる構成で
も良いし、両者を成型した容器構成でもよいことはいう
までもない。In addition, in the above explanation, the container structure is made up of a flat glass face panel and a metal molded back plate, but the container structure may be made of a glass molded face panel and a metal molded back plate, or a container configuration in which both are molded. Needless to say, it's a good thing.
発明の効果
以上述べてきたように本発明によれば、背面板の厚肉化
による真空耐圧の確保と接合時の熱応力によるガラスの
損壊という相反する課題を解決することができる。Effects of the Invention As described above, according to the present invention, it is possible to solve the contradictory problems of ensuring vacuum withstand pressure by increasing the thickness of the back plate and damaging the glass due to thermal stress during bonding.
しかしてガラス製のフェースパネルと金属製の背面板と
による軽量かつ高信頼性の平板型画像表示装置の真空容
器を安価に提供す゛ることかでき、その工業的価値は極
めて高い。Therefore, it is possible to provide a lightweight and highly reliable vacuum container for a flat-panel image display device at a low cost with a glass face panel and a metal back plate, and its industrial value is extremely high.
第１図は本発明の一実施例における平板型画像表示装置
の真空容器の断面模式図、第２図は従来の真空容器の断
面図である。
１．．，フェースパネル、２，．．電極構造体、３．．
，背而板、４．．．ガラスフリット層、５．．．補強部
材。FIG. 1 is a schematic cross-sectional view of a vacuum container of a flat panel image display device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a conventional vacuum container. 1. ．． , face panel, 2,. ．． electrode structure; 3. ．．
, back board, 4. ．． ．． glass frit layer, 5. ．． ．． Reinforcement member.
Claims (1)
とを接合してなる平板形画像表示装置の真空容器であっ
て、背面板に補強部材を接合したことを特徴とする平板
型画像表示装置の真空容器。1. A vacuum container for a flat image display device comprising a face panel having an image display section and a metal back plate bonded to each other, the flat image display device characterized in that a reinforcing member is bonded to the back plate. vacuum container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5991189A JPH02239548A (en) | 1989-03-13 | 1989-03-13 | Vacuum vessel of plane type image display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5991189A JPH02239548A (en) | 1989-03-13 | 1989-03-13 | Vacuum vessel of plane type image display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02239548A true JPH02239548A (en) | 1990-09-21 |
Family
ID=13126780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5991189A Pending JPH02239548A (en) | 1989-03-13 | 1989-03-13 | Vacuum vessel of plane type image display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02239548A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0946960A1 (en) * | 1996-12-23 | 1999-10-06 | Candescent Technologies Corporation | Method of strengthening flat panel display and associated gettered device |
| EP1096537A1 (en) * | 1999-11-01 | 2001-05-02 | Jamco Corporation | Plasma display device |
-
1989
- 1989-03-13 JP JP5991189A patent/JPH02239548A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0946960A1 (en) * | 1996-12-23 | 1999-10-06 | Candescent Technologies Corporation | Method of strengthening flat panel display and associated gettered device |
| EP0946960A4 (en) * | 1996-12-23 | 2000-11-15 | Candescent Tech Corp | Method of strengthening flat panel display and associated gettered device |
| EP1096537A1 (en) * | 1999-11-01 | 2001-05-02 | Jamco Corporation | Plasma display device |
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