JPH0795431B2 - Funnel for color cathode ray tube - Google Patents
Funnel for color cathode ray tubeInfo
- Publication number
- JPH0795431B2 JPH0795431B2 JP2157174A JP15717490A JPH0795431B2 JP H0795431 B2 JPH0795431 B2 JP H0795431B2 JP 2157174 A JP2157174 A JP 2157174A JP 15717490 A JP15717490 A JP 15717490A JP H0795431 B2 JPH0795431 B2 JP H0795431B2
- Authority
- JP
- Japan
- Prior art keywords
- funnel
- ray tube
- cathode ray
- color cathode
- frit glass
- 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.)
- Expired - Fee Related
Links
- 239000011521 glass Substances 0.000 claims description 25
- 238000007789 sealing Methods 0.000 description 35
- 238000005498 polishing Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2209/00—Apparatus and processes for manufacture of discharge tubes
- H01J2209/26—Sealing parts of the vessel to provide a vacuum enclosure
- H01J2209/265—Surfaces for sealing vessels
- H01J2209/268—Surfaces for sealing vessels treated surfaces and surface preparations, e.g. to improve adhesion
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、カラー陰極線管に用いられるファンネルに関
するものである。TECHNICAL FIELD The present invention relates to a funnel used in a color cathode ray tube.
第３図に示したように、カラー陰極線管用ガラス物品に
は、画像が映し出されるパネル（１）と、ネック部を有
する漏斗状のファンネル（２）とがあり、両者はその対
向する封着端面（３）（３）に介在させたフリットガラ
ス（４）により封着される。この封着は、ファンネル
（２）を下にしてその封着端面（３）上に有機結合剤
（通称ビークル）と混合されたスラリー状のフリットガ
ラス（４）を塗布し、乾燥後、その上にパネル（１）を
その封着端面（３）を下向きにして載置し、その後フリ
ットガラス（４）を加熱して溶解することにより行われ
る。As shown in FIG. 3, a glass article for a color cathode ray tube has a panel (1) on which an image is displayed and a funnel-shaped funnel (2) having a neck portion, both of which are opposite sealing end faces. (3) Sealed by the frit glass (4) interposed in (3). In this sealing, the funnel (2) is faced down on the sealing end face (3), and a slurry-like frit glass (4) mixed with an organic binder (commonly known as a vehicle) is applied, and after drying, Then, the panel (1) is placed with the sealing end surface (3) facing downward, and then the frit glass (4) is heated and melted.
かかるフリットガラス（４）による封着においては、塗
布性及び封着部の強度の面から粘性の低い軟らかいフリ
ットガラス（４）をできるだけ多量且つ均一に封着端面
（３）上に塗布する必要がある。In the sealing with the frit glass (4), it is necessary to apply the soft frit glass (4) having a low viscosity as much as possible and uniformly on the sealing end surface (3) in terms of coating property and strength of the sealing portion. is there.
ところが、従来のファンネル（２）の封着端面（３）は
滑らかな鏡面状態であるため、軟らかいスラリー状のフ
リットガラス（４）を多量に塗布すると封着端面（３）
上に安定して保持されずその一部が封着端面（３）から
流れ垂れ、第４図に示すような外観の凹み（６）をもつ
リエントランスの封着形状を呈して封着強度が劣化し、
その結果、排気工程等の陰極線管の製造工程において破
損が発生する問題を引き起こす。However, since the sealing end surface (3) of the conventional funnel (2) has a smooth mirror surface state, if a large amount of soft slurry frit glass (4) is applied, the sealing end surface (3)
It is not stably held on the upper part, and a part of it flows down from the sealing end face (3) and exhibits the sealing shape of the reentrance with the recess (6) having the appearance as shown in FIG. Deteriorated,
As a result, there arises a problem that breakage occurs in a cathode ray tube manufacturing process such as an exhaust process.
そこで、本発明の目的は、封着端面上に軟らかいフリッ
トガラスを多量に塗布しても該フリットガラスを安定し
て保持し、その結果良好な封着形状を得られるカラー陰
極線管用ファンネルを提供することである。Therefore, an object of the present invention is to provide a funnel for a color cathode ray tube, which can hold a frit glass stably even if a large amount of soft frit glass is applied on the sealing end face, and as a result can obtain a good sealing shape. That is.
本発明は上記の課題に鑑みてなされたもので、フリット
ガラスとの封着端面が、平均大きさが５〜25μｍ、平均
深さが10〜25μｍ、平均個数が15万〜400万個/cm2であ
る多数の微細な小孔状の凹部からなる粗面であることを
特徴とするカラー陰極線管用ファンネルである。The present invention has been made in view of the above problems, and the sealing end face with the frit glass has an average size of 5 to 25 μm, an average depth of 10 to 25 μm, and an average number of 150,000 to 4 million pieces / cm. A funnel for a color cathode ray tube, which is characterized in that it is a rough surface composed of a large number of minute small hole-shaped concave portions 2 .
本発明では、カラー陰極線管用ファンネルの封着端面が
多数の微細な小孔状の凹部からなる粗面であることによ
りフリットガラスが流れ垂れることなく安定に保持され
た良好な封着形状を得られる。その理由は滑らかな鏡面
状態に比べて、封着端面の多数の微細な小孔状の凹部
に、その上に塗布されるスラリー状のフリットガラスの
下面側の幾分かが浸透し、投錨作用を生じてスラリー状
のフリットガラスの流れ垂れを抑制し、その間に進行す
る乾燥作用によって、スラリー状のフリットガラスの粘
性が高まってその流動作用がさらに抑制されるためと考
えられる。In the present invention, since the sealing end surface of the funnel for a color cathode ray tube is a rough surface composed of a large number of minute small hole-shaped concave portions, a good sealing shape can be obtained in which the frit glass is stably held without flowing down. . The reason is that, compared with the smooth mirror surface state, some of the fine flute glass on the sealing end face penetrates into the small number of fine flutes on the sealing surface and some of the lower surface of the slurry frit glass penetrates, causing the anchoring action. This is considered to be because the flow-dripping of the slurry-like frit glass is suppressed, and the progress of the drying action during that time increases the viscosity of the slurry-like frit glass to further suppress the flowing action.
以下、本発明の一実施例を図面を参照して説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は本実施例のカラー陰極線管用ファンネル（11）
の一部拡大斜視図である。FIG. 1 shows the funnel for a color cathode ray tube of this embodiment (11).
It is a partially expanded perspective view of FIG.
ファンネル（11）は、その封着端面（12）の全周に亘っ
て多数の微細な小孔状の凹部（13）からなる粗面を有し
ている。小孔状の凹部（13）は、その平均大きさが５〜
25μｍ、平均深さが10〜25μｍ、平均個数が15万〜400
万個/cm2である。The funnel (11) has a rough surface composed of a large number of fine small hole-shaped recesses (13) over the entire circumference of the sealing end surface (12). The small hole-shaped recess (13) has an average size of 5 to 5.
25μm, average depth 10-25μm, average number 150,000-400
It is 10,000 pieces / cm 2 .
かかる小孔状の凹部（13）を有する封着端面（12）は、
例えば以下の要領で作成される。The sealing end surface (12) having such a small hole-shaped recess (13) is
For example, it is created as follows.
回転する研磨テーブル上に、形成されたファンネル（1
1）の端面を当接して、アランダム及びシリコンカーバ
イトのような研磨スラリーを供給しながら研磨する。こ
れによって、研磨テーブル上のアランダムがファンネル
（11）の端面のガラスを微細に切削して、多数の微細な
小孔状の凹部（13）からなる粗面の封着端面（12）が作
成される。研磨終了後は、封着端面（12）を洗浄して付
着している研磨スラリーを洗い落とす。上記研磨作業に
おいて、研磨跡に形成される多数の微細な小孔状の凹部
（13）は、ファンネル（11）の封着端面（12）の両縁を
横断する如き連続した線状又は溝状となっておらず、各
凹部が独立した不連続状に形成されていることが重要で
ある。即ち、研磨跡が、ファンネル（11）の封着端面
（12）の両縁を横断する如き連続した線状又は溝状とな
っていると、フリットガラスを、これらすべての線状又
は溝状の研磨跡に完全に充填させ難く封着が不十分とな
り、後の排気工程において該研磨跡よりエアーリークし
て脱真空が発生する恐れがあるためである。小孔状の凹
部（13）の作成は前記の例示に限らず、他にサンドブラ
スト法により砂をファンネル（11）の端面に吹き付けて
作成することもできる。On the rotating polishing table, the formed funnel (1
The end faces of 1) are brought into contact with each other, and polishing is performed while supplying a polishing slurry such as alundum and silicon carbide. As a result, the alundum on the polishing table finely cuts the glass on the end face of the funnel (11) to create a rough sealing end face (12) consisting of many fine small hole-shaped recesses (13). To be done. After the polishing is completed, the sealing end face (12) is washed to wash off the attached polishing slurry. In the above polishing operation, a large number of fine small hole-shaped recesses (13) formed in the polishing marks are continuous linear or groove-shaped so as to cross both edges of the sealing end face (12) of the funnel (11). However, it is important that each recess is formed in an independent discontinuous shape. That is, when the polishing traces are continuous linear or groove-shaped so as to cross both edges of the sealing end face (12) of the funnel (11), the frit glass is treated with all these linear or groove-shaped. This is because it is difficult to completely fill the polishing traces and the sealing is insufficient, and there is a possibility that air leakage may occur from the polishing traces in the subsequent evacuation process to cause devacuum. The formation of the small-hole-shaped concave portion (13) is not limited to the above example, but sand may be blown onto the end surface of the funnel (11) by a sandblast method.
第２図は、斯様にして多数の微細な小孔状の凹部（13）
が作成された封着端面（12）を有するファンネル（11）
をフリットガラス（14）を用いてパネル（15）と封着し
た状態を示す封着部の拡大断面図である。FIG. 2 shows a large number of small hole-shaped recesses (13) in this way.
Funnel (11) with a sealed end face (12) created
FIG. 3 is an enlarged cross-sectional view of a sealing portion showing a state in which the panel is sealed with a frit glass (14) to a panel (15).
ファンネル（11）の封着端面（12）上に塗布されたスラ
リー状のフリットガラス（14）は、その下面側のものが
多数の微細な小孔状の凹部（13）に浸透し、投錨作用を
生じてスラリー状のフリットガラス（14）の流れ垂れを
抑制し、その間に乾燥が進行して、スラリー状のフリッ
トガラス（14）の粘性が高まり、その流動作用がさらに
抑制されることによって安定して保持されるため、その
上に載置されるパネル（15）の封着端面（12）との間で
良好な封着形状を形成する。しかも、上記多数の微細な
小孔状の凹部（13）によって、ファンネル（11）の封着
端面（12）とフリットガラス（14）との接着表面積が増
大し、その結果、接着強度が増大する。The slurry-like frit glass (14) applied on the sealing end surface (12) of the funnel (11) penetrates into the numerous small hole-shaped recesses (13) on the lower surface side and anchors. To prevent the flow of the slurry-like frit glass (14) from dripping, while drying progresses, the viscosity of the slurry-like frit glass (14) increases, and its flow action is further suppressed to stabilize it. Since it is held in a closed state, a good sealing shape is formed with the sealing end surface (12) of the panel (15) placed on it. Moreover, the large number of minute small-hole-shaped recesses (13) increase the adhesion surface area between the sealing end surface (12) of the funnel (11) and the frit glass (14), and as a result, increase the adhesion strength. .
以上説明したように、本発明のカラー陰極線管用ファン
ネルによれば、その封着端面上に多量に塗布された軟ら
かいフリットガラスを安定して保持でき、その結果封着
強度の高い良好な封着形状を得られるので排気工程等の
陰極線管の製造工程において破損することなく、その製
造歩留を著しく向上できる。As described above, according to the funnel for a color cathode ray tube of the present invention, it is possible to stably hold a large amount of soft frit glass applied on the sealing end face, and as a result, a good sealing shape with high sealing strength is obtained. Therefore, the manufacturing yield can be remarkably improved without damage in the manufacturing process of the cathode ray tube such as the exhaust process.
第１図は本発明にかかるカラー陰極線管用ファンネルの
封着端面の一部拡大斜視図、第２図は本発明のカラー陰
極線管用ファンネルを用いて封着した状態を示す断面
図、第３図はカラー陰極線管用ファンネルを封着した状
態を示す断面図、第４図は従来のカラー陰極線管用ファ
ンネルを用いて封着した場合のリエントランスの封着形
状の断面図である。 （11）……ファンネル、（12）……封着端面、 （13）……小孔状の凹部、 （14）……フリットガラス、 （15）……パネル。FIG. 1 is a partially enlarged perspective view of a sealing end face of a funnel for a color cathode ray tube according to the present invention, FIG. 2 is a sectional view showing a state in which the funnel for a color cathode ray tube of the present invention is sealed, and FIG. FIG. 4 is a sectional view showing a state in which a funnel for a color cathode ray tube is sealed, and FIG. 4 is a sectional view of a sealing shape of a reentrance when the funnel for a conventional color cathode ray tube is sealed. (11) …… Funnel, (12) …… Seal end face, (13) …… Small hole shaped recess, (14) …… Frit glass, (15) …… Panel.
Claims (1)
さが５〜25μｍ、平均深さが10〜25μｍ、平均個数が15
万〜400万個/cm2である多数の微細な小孔状の凹部から
なる粗面であることを特徴とするカラー陰極線管用ファ
ンネル。1. An end face sealed with frit glass has an average size of 5 to 25 μm, an average depth of 10 to 25 μm, and an average number of 15
A funnel for a color cathode ray tube, which has a rough surface composed of a large number of minute small-hole-shaped concave portions of 10,000 to 4 million pieces / cm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2157174A JPH0795431B2 (en) | 1990-06-14 | 1990-06-14 | Funnel for color cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2157174A JPH0795431B2 (en) | 1990-06-14 | 1990-06-14 | Funnel for color cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0448536A JPH0448536A (en) | 1992-02-18 |
| JPH0795431B2 true JPH0795431B2 (en) | 1995-10-11 |
Family
ID=15643808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2157174A Expired - Fee Related JPH0795431B2 (en) | 1990-06-14 | 1990-06-14 | Funnel for color cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0795431B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240251776A1 (en) * | 2017-08-30 | 2024-08-01 | Brandenburg Innovation Limited | Ovitrap and method of controlling vector born disease |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002197993A (en) | 2000-12-26 | 2002-07-12 | Nippon Electric Glass Co Ltd | Funnel of color cathode ray tube |
| KR20030096749A (en) * | 2002-06-17 | 2003-12-31 | 니폰 덴키 가라스 가부시키가이샤 | Funnel for a color cathode ray tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60177453U (en) * | 1984-05-02 | 1985-11-25 | 日本電気株式会社 | cathode ray tube |
-
1990
- 1990-06-14 JP JP2157174A patent/JPH0795431B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240251776A1 (en) * | 2017-08-30 | 2024-08-01 | Brandenburg Innovation Limited | Ovitrap and method of controlling vector born disease |
| US12564184B2 (en) * | 2017-08-30 | 2026-03-03 | Brandenburg Innovation Limited | Ovitrap and method of controlling vector born disease |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0448536A (en) | 1992-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |