JPH03177331A - Cathode ray tube panel glass - Google Patents
Cathode ray tube panel glassInfo
- Publication number
- JPH03177331A JPH03177331A JP31484489A JP31484489A JPH03177331A JP H03177331 A JPH03177331 A JP H03177331A JP 31484489 A JP31484489 A JP 31484489A JP 31484489 A JP31484489 A JP 31484489A JP H03177331 A JPH03177331 A JP H03177331A
- Authority
- JP
- Japan
- Prior art keywords
- panel glass
- pbo
- ray tube
- cathode ray
- tube panel
- 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
- 239000011521 glass Substances 0.000 title claims abstract description 20
- 238000010894 electron beam technology Methods 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 238000004040 coloring Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 2
- 229910020203 CeO Inorganic materials 0.000 abstract 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 abstract 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 abstract 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 1
- NOTVAPJNGZMVSD-UHFFFAOYSA-N potassium monoxide Inorganic materials [K]O[K] NOTVAPJNGZMVSD-UHFFFAOYSA-N 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Inorganic materials [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 abstract 1
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 238000002834 transmittance Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/07—Glass compositions containing silica with less than 40% silica by weight containing lead
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、カラーテレビジロン管や投写管等に用いられ
る陰極線管パネルガラスに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cathode ray tube panel glass used in color television tubes, projection tubes, and the like.
［従来技術とその問題点コ
カラーテレビジタン管や投写管等に用いられる陰極線管
パネルガラスは、電子放射手段である陰極から出た電子
線によって発生するＸ線が管外に漏れると人体に危険で
あるため高いＸ線吸収能を有することが要求される。ガ
ラスのＸ線吸収成分としてはＰｂＯが最も吸収能が高い
成分であるが、ＰｂＯを含有するガラスは電子線の照射
によってブラウニングと呼ばれる着色を生じるので好ま
しくない。従ってＰｂＯの含有を避けてガラスのＸ線吸
収係数を高めるためにはＸ線吸収能の高い５ｒｏ１Ｂａ
Ｏ１ＺｎＯ１ＺｒＯｚ等の成分を含有することになるが
、これらの成分を多量含有するとガラスが失透しやすく
なるため含有量を制限せざるを得なくなり、その結果Ｘ
線吸収能も制限されてしまっているのが現状である。[Prior art and its problems] The cathode ray tube panel glass used in Cocolor television tubes, projection tubes, etc. is dangerous to the human body if the X-rays generated by the electron beams emitted from the cathode, which is the electron emitting means, leak outside the tube. Therefore, it is required to have high X-ray absorption ability. PbO is the component with the highest absorption ability as an X-ray absorbing component of glass, but glass containing PbO is not preferable because it causes coloration called browning when irradiated with electron beams. Therefore, in order to avoid the inclusion of PbO and increase the X-ray absorption coefficient of glass, it is necessary to use 5ro1Ba, which has a high X-ray absorption ability.
It will contain components such as O1ZnO1ZrOz, but if large amounts of these components are contained, the glass will easily devitrify, so the content must be limited, and as a result
Currently, the line absorption capacity is also limited.
［発明の目的］
本発明は、電子線による着色を起し難く、且つ高いＸ線
吸収能を有する陰極線管パネルガラスを提供することを
目的とするものである。[Object of the Invention] An object of the present invention is to provide a cathode ray tube panel glass that is less likely to be colored by electron beams and has a high X-ray absorption ability.
［発明の構成］
本発明者等は、特に電子線による着色に対して抵抗性の
あるガラスの研究を進めていく中で、Ｐｂｏを例えば５
００ＰＰｍというような微量含有するだけで電子線によ
る着色が増大するにもかかわらず、逆に６１重量％以上
含有すると電子線による着色に対して高い抵抗性を有す
るようになることを見い出し、本発明として提案するも
のである。[Structure of the Invention] While conducting research on glass that is particularly resistant to coloring by electron beams, the present inventors discovered that Pbo, for example, 5
It was discovered that even though the content of a small amount such as 00PPm increases the coloration caused by electron beams, conversely, when the content is 61% by weight or more, the material becomes highly resistant to coloration caused by electron beams, and the present invention This is what we propose.
すなわち本発明の陰極線管パネルガラスは、本質的にＰ
ｂＯを６１−９０重量％含有し、電子線による着色を起
し難く、且つ高いＸ線吸収能を有することを特徴とする
。That is, the cathode ray tube panel glass of the present invention essentially contains P.
It is characterized by containing 61-90% bO by weight, being resistant to coloring by electron beams, and having high X-ray absorption ability.
本発明においてＰｂＯの含有量を上記のように限定した
のは次の理由による。すなわち８１重量％より少ない場
合は、ＰｂＯを微量含有した場合と同等もしくはそれ以
上の電子線による着色を起し、一方ＰｂＯの含有量が多
くなるほどＸ線吸収能は高くなるが９０重量％より多い
場合はガラス化が困難となるからである。The reason why the content of PbO is limited as described above in the present invention is as follows. In other words, if it is less than 81% by weight, the coloring caused by electron beams will be the same as or more than that when a small amount of PbO is contained, whereas as the PbO content increases, the X-ray absorption ability increases, but it is more than 90% by weight. This is because vitrification becomes difficult in such cases.
［実施例コ
以下本発明の陰極線管パネルガラスを実施例に基づいて
説明する。[Examples] The cathode ray tube panel glass of the present invention will be described below based on examples.
次表は本発明の実施例（試料Ｎａ １〜３）と比較例（
試料Ｎａ ４及び５）の各ガラス組成、電子線着色、Ｘ
線吸収係数を示したものである。The following table shows examples of the present invention (sample Na 1 to 3) and comparative examples (
Each glass composition of samples Na 4 and 5), electron beam coloring,
This shows the linear absorption coefficient.
（重量％） 表に示した各試料は次のように調製した。(weight%) Each sample shown in the table was prepared as follows.
まず各試料のガラス組成になるように調合した原料を石
英ルツボに入れ、約１３８０℃で４時間溶融した。均質
なガラスを得るために途中白金撹拌棒で３分間攪拌を行
い、脱泡した後金型に流し出して板状に成形した。徐冷
後金型から取り出し、研磨して２０ Ｘ ３０ Ｘ ５
ｗ＋ｍの寸法の試料片を作製した。First, raw materials prepared to have the glass composition of each sample were placed in a quartz crucible and melted at about 1380° C. for 4 hours. In order to obtain a homogeneous glass, the mixture was stirred for 3 minutes using a platinum stirring rod, and after defoaming, it was poured into a mold and formed into a plate. After slow cooling, it is removed from the mold and polished to a size of 20 x 30 x 5.
A sample piece with a size of w+m was prepared.
次に各試料のガラスの電子線による着色の実験について
説明する。Next, an experiment of coloring each glass sample with an electron beam will be explained.
あらかじめ透過率を測定した試料片に３０００Ａの厚み
のアルミニウムを蒸着−してカラーテレビジ日ン管のシ
ャドーマスクにワイヤーで固定した後、電子銃から印加
電圧３０ＫＶ１電子ビームの電流密度３μＡ／ｃＪの条
件で電子線を試料片に５０時間照射した。その後、シャ
ドーマスクから試料片を取りはずし、次いで蒸着アル主
ニウムを除去して透過率を測定し、照射前後の波長４０
０ｎｍにおける透過率差で電子線９着色量を表した。Aluminum with a thickness of 3000 A was vapor-deposited on a sample piece whose transmittance had been measured in advance, and it was fixed to the shadow mask of a color television tube with a wire. The sample piece was irradiated with an electron beam for 50 hours under the following conditions. After that, the sample piece was removed from the shadow mask, the vapor-deposited aluminum was removed, and the transmittance was measured.
The amount of coloring of the electron beam 9 was expressed by the transmittance difference at 0 nm.
結果はＰｂＯを４５．２重量％含有するＮ（Ｌ ５の試
料片が最も著しく着色し、ＰｂＯを含有しないＮａ ４
の試料片もそれに次いで着色した。それに対しＰｂｏを
６１重量％以上含有するＮａ １〜３の各試料片は非常
に着色が少なかった。The results showed that the sample piece of N (L 5) containing 45.2% by weight of PbO was most markedly colored, and that of Na 4 containing 45.2% PbO
The sample pieces were also subsequently colored. In contrast, each sample piece of Na 1 to 3 containing 61% by weight or more of Pbo had very little coloring.
また表中のＸ線吸収係数は０．６人波長における値であ
るが、Ｎｌ１ｌ〜３の各試料片は、Ｎ１１４及び５の試
料片に比べて高い値を示した。Further, the X-ray absorption coefficients in the table are values at 0.6 human wavelength, and each of the sample pieces Nl11 to 3 showed higher values than the sample pieces N114 and 5.
［発明の効果コ
以上のように本発明の陰極線管パネルガラスは、電子線
による着色に対して高い抵抗性を有すると共に高いＸ線
吸収能を有しているためカラーテレビジ請ン管や投写管
等のパネルガラスとして好適である。[Effects of the Invention] As described above, the cathode ray tube panel glass of the present invention has high resistance to coloring by electron beams and high X-ray absorption ability, so it is suitable for use in color television power supply tubes and projection screens. Suitable as panel glass for pipes, etc.
Claims (1)
線による着色を起し難く、且つ高いＸ線吸収能を有する
ことを特徴とする陰極線管パネルガラス(1) A cathode ray tube panel glass that essentially contains 61 to 90% by weight of PbO, is resistant to coloring by electron beams, and has high X-ray absorption ability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31484489A JPH03177331A (en) | 1989-12-04 | 1989-12-04 | Cathode ray tube panel glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31484489A JPH03177331A (en) | 1989-12-04 | 1989-12-04 | Cathode ray tube panel glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03177331A true JPH03177331A (en) | 1991-08-01 |
Family
ID=18058285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31484489A Pending JPH03177331A (en) | 1989-12-04 | 1989-12-04 | Cathode ray tube panel glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03177331A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1939147A4 (en) * | 2005-10-19 | 2008-11-05 | Nippon Electric Glass Co | Radiation shielding glass and method for manufacture thereof |
-
1989
- 1989-12-04 JP JP31484489A patent/JPH03177331A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1939147A4 (en) * | 2005-10-19 | 2008-11-05 | Nippon Electric Glass Co | Radiation shielding glass and method for manufacture thereof |
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