JPS6050020B2 - color picture tube - Google Patents
color picture tubeInfo
- Publication number
- JPS6050020B2 JPS6050020B2 JP6012879A JP6012879A JPS6050020B2 JP S6050020 B2 JPS6050020 B2 JP S6050020B2 JP 6012879 A JP6012879 A JP 6012879A JP 6012879 A JP6012879 A JP 6012879A JP S6050020 B2 JPS6050020 B2 JP S6050020B2
- Authority
- JP
- Japan
- Prior art keywords
- resistance film
- color picture
- picture tube
- tube
- anode
- 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
Links
- 239000011521 glass Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Description
【発明の詳細な説明】
本発明は、ガラスバルブのフアンネル部に設けられた陽
極釦端子から電子銃の陽極にいたる給電路中に高抵抗体
膜を介在させて、管内スパーク発生時における危険、す
なわち集束電極またはその他の低電圧電極に接続された
回路素子が、スパーク電流によつて誘発された電圧によ
り破かいする危険をとり除いたカラー受像管に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a high-resistance film interposed in the power supply path from the anode button terminal provided in the funnel portion of the glass bulb to the anode of the electron gun, thereby eliminating the risk of sparks occurring inside the tube. In other words, it relates to a color picture tube in which the risk of circuit elements connected to the focusing electrode or other low-voltage electrodes being damaged by the voltage induced by the spark current is eliminated.
カラー受像管の製造中または完成後に、管内導電膜の一
部分またはその他の導電性小片が脱落して、いわゆる管
内異物として管内に留ることがある。そしてこのような
異物が電子銃電極またはその近傍に付着すると管内スパ
ークを生じやすく、このスパーク電流によつて誘起され
た電圧が、電子銃電極に接続された回路素子、とくにＭ
ＯＳトランジスタ等の半導体を破壊することがある。こ
のような危険をとり除くために、従来、第１図に示すよ
うな構造のカラー受像管が開発された。すなわち同図に
おいて、ガラスバルブ１のフアンネル部２に設けられた
陽極釦端子３は、フアンネル部２の内面に付設された黒
鉛等からなる第１の導電膜４、フアンネル部２の内面に
導電膜４と一部重合して付設された高抵抗体膜５、第２
の導電膜６および第１の導電性舌状片７を介して電子銃
８の陽極９に電気的に接続されている。一方、ガラスバ
ルブ１のフェースパネル１０の内面には、螢光体膜１１
およびメタルバック１２が付設されており、メタルバッ
ク１２は導電性バネピン１３、マスク支持用スプリング
１４、マスクフレーム１５、第２の導電性舌状片１６お
よび第１の導電膜４を介して陽極釦端子３の電気的に接
続されている。１７はシヤドウマスク、１８はリングゲ
ツタを示す。During manufacture or after completion of a color picture tube, a portion of the tube's conductive film or other conductive particles may fall off and remain in the tube as so-called tube foreign matter. When such foreign matter adheres to the electron gun electrode or its vicinity, sparks are likely to occur within the tube, and the voltage induced by this spark current can be applied to circuit elements connected to the electron gun electrode, especially M
It may destroy semiconductors such as OS transistors. In order to eliminate such risks, a color picture tube having a structure as shown in FIG. 1 has been developed. That is, in the same figure, the anode button terminal 3 provided on the funnel portion 2 of the glass bulb 1 has a first conductive film 4 made of graphite or the like attached to the inner surface of the funnel portion 2, and a conductive film on the inner surface of the funnel portion 2. A high resistance film 5 attached by partially polymerizing with 4, a second
It is electrically connected to an anode 9 of an electron gun 8 via a conductive film 6 and a first conductive tongue 7 . On the other hand, a phosphor film 11 is provided on the inner surface of the face panel 10 of the glass bulb 1.
and a metal back 12 are attached, and the metal back 12 is connected to an anode button via a conductive spring pin 13, a mask support spring 14, a mask frame 15, a second conductive tongue piece 16, and a first conductive film 4. Terminal 3 is electrically connected. 17 is a shadow mask, and 18 is a ring getter.
このように構成されたカラー受像管の作動においては、
陽極釦端子３に対して供給された直流高電圧が高抵抗体
膜５を通じて電子銃８の陽極９にＪ印加されるので、こ
の給電路に大スパーク電流が流れると、高抵抗体膜５に
よる電圧降下が増大し、スパーク発生に伴う危険が防止
される。In the operation of the color picture tube constructed in this way,
Since the DC high voltage supplied to the anode button terminal 3 is applied to the anode 9 of the electron gun 8 through the high resistance film 5, when a large spark current flows through this power supply path, the high resistance film 5 The voltage drop is increased and the hazards associated with sparking are prevented.
高抵抗体膜５の素材としては、通常、酸化第二鉄と黒鉛
との混合物が用いられるが、前述のようクないわゆるソ
フトフラッシュ効果を満足に得るためには、高抵抗体膜
５の表面に導電性物質が付着してはならない。しかし、
リングゲツタ１８を高周波加熱することにより生じたバ
リウムの導電性物質が、高抵抗体膜５の表面に連続した
膜として付着しやすい。そこで、リングゲツタを陽極釦
端子付近に設置するなどの方法がとられているのである
が、このような構造をとつても完全な対策となり得なか
つた。本発明は、前述のような従来の不都合を除去する
ためになされたもので、本発明のカラー受像管において
は、第２図に示すようにフアンネル部内面の高抵抗体膜
付設領域の管軸方向断面形状を、管軸に向き合う面と向
き合わない面とが生じるのこぎり歯に形成する。A mixture of ferric oxide and graphite is normally used as the material for the high-resistance film 5, but in order to satisfactorily obtain the so-called soft flash effect described above, the surface of the high-resistance film 5 must be Conductive substances must not be attached to the but,
The barium conductive substance generated by high-frequency heating of the ring getter 18 tends to adhere to the surface of the high-resistance film 5 as a continuous film. Therefore, methods such as installing a ring getter near the anode button terminal have been taken, but even such a structure could not be a complete countermeasure. The present invention has been made in order to eliminate the above-mentioned conventional disadvantages. In the color picture tube of the present invention, as shown in FIG. The directional cross-sectional shape is formed into a sawtooth shape with a surface facing the tube axis and a surface not facing the tube axis.
すなわち同図において、フアンネル部２″の高抵抗体膜
付設領域１９は、管軸方向に切断した断面がのこぎり歯
状となる凹凸面を呈しており、この領域１９に付設され
た高抵抗体膜５″は、前記凹凸面に沿つたジグザグ状の
管軸方向断面形状を有している。領域１９の凹凸の高さ
は数ミリから１α狡ミリ程度に設定することができ、こ
の凹凸面の各谷は、管軸を中心とする円周に沿つて、ブ
レス加工で刻まれた１本または複数本の溝によつて形成
されている。このように構成された本発明実施のカラー
受像管においては、高抵抗体膜５″の表面がジグザグ状
となるので、リングゲツタ１８を高周波加熱することに
より蒸発したバリウム等の導電性ゲツタ物質がたとえ高
抵抗体膜５″上に付着しても、こ，のゲツタ物質の膜は
前記蒸発の方向性（フラッシュ方向）により、ジグザグ
状断面の高抵抗体膜５″の少なくとも段差部において途
切れを生じ、したがつて高抵抗体膜５″のほぼ全域がゲ
ツタ蒸着膜によつて連続的に短絡されることはなくなり
、この短絡による従来の不都合が完全に解消される。な
お、高抵抗体膜５″はその素材として、たとえば酸化第
二鉄（７踵量％）と黒鉛（５重量％）と、硅酸塩（１鍾
量％）との混合物を用いることができ、これを懸濁液の
かたちにしてスプレーし、膜形成するのがよい。In other words, in the figure, the high-resistance film attachment region 19 of the funnel portion 2'' has an uneven surface with a sawtooth-like cross section when cut in the tube axis direction, and the high-resistance film attached to this region 19 5'' has a zigzag cross-sectional shape in the tube axis direction along the uneven surface. The height of the unevenness in region 19 can be set from several millimeters to about 1α mm, and each valley on this uneven surface is a single line carved by press processing along the circumference centered on the tube axis. Or it is formed by multiple grooves. In the color picture tube according to the present invention configured in this way, the surface of the high-resistance film 5'' has a zigzag shape, so that the conductive getter material such as barium evaporated by high-frequency heating of the ring getter 18 is Even if it is deposited on the high-resistance film 5'', this film of getter material will cause discontinuities at least at the stepped portion of the high-resistance film 5'' with a zigzag cross section due to the direction of evaporation (flash direction). Therefore, almost the entire area of the high-resistance film 5'' is no longer continuously short-circuited by the getter-deposited film, and the conventional disadvantages caused by this short-circuit are completely eliminated. The material for the high-resistance film 5'' may be, for example, a mixture of ferric oxide (7% by weight), graphite (5% by weight), and silicate (1% by weight). It is best to spray this in the form of a suspension to form a film.
また、前記凹凸面はフノアンネル部をブレス成形する過
程であわせ形成するのがよい。以上のように本発明のカ
ラー受像管は、フアンネル部の高抵抗体膜付設領域をの
こぎり歯状断面の凹凸面となし、高抵抗体膜の表面をジ
グザグ状ならしめたものであり、高抵抗体膜の表面にゲ
ツター物質が連続した膜状に被着形成されることがなく
、高抵抗体膜の抵抗値を所定の範囲内に保持することが
できる。Further, it is preferable that the uneven surface is formed in a process of press-molding the funnel part. As described above, in the color picture tube of the present invention, the high-resistance film attachment area of the funnel portion has an uneven surface with a sawtooth cross section, and the surface of the high-resistance film has a zigzag shape. The getter substance is not formed as a continuous film on the surface of the body membrane, and the resistance value of the high-resistance body membrane can be maintained within a predetermined range.
また、フアンネル部の高抵抗体膜付設領域の単位面積当
り表面積が大となり、十分な量の高抵抗体膜を付設する
ことができる。Furthermore, the surface area per unit area of the high-resistance film attachment region of the funnel portion becomes large, and a sufficient amount of the high-resistance film can be attached.
第１図は従来のカラー受像管の一部破断側面図、第２図
は本発明を実施したカラー受像管の一部破断側面図であ
る。
２，２″・・・・フアンネル部、３・・・・・・陽極釦
端子、５，５″・・・・・高抵抗体膜、９・・・・・・
陽極、１８・・・リングゲツタ、１９・・・・・高抵抗
体膜付設領域。FIG. 1 is a partially cutaway side view of a conventional color picture tube, and FIG. 2 is a partially cutaway side view of a color picture tube embodying the present invention. 2, 2″...Funnel part, 3...Anode button terminal, 5,5″...High resistance film, 9...
Anode, 18... Ring getter, 19... High resistance film attachment area.
Claims (1)
設し、前記フアンネル部に設けた陽極釦端子から電子銃
の陽極にいたる給電路中に前記高抵抗体膜を介在させ、
前記陽極の先端部にリングゲッタをとりつけてなるカラ
ー受像管において、前記フアンネル部の高抵抗体膜付設
領域の管軸方向断面形状を、管軸に向き合う面と向き合
わない面とが生じるのこぎり歯状となし、前記高抵抗体
膜の管軸方向断面形状をジグザグ状ならしめたことを特
徴とするカラー受像管。1. A high-resistance film is attached to the inner surface of the funnel part of the glass bulb, and the high-resistance film is interposed in a power supply path from the anode button terminal provided in the funnel part to the anode of the electron gun.
In a color picture tube in which a ring getter is attached to the tip of the anode, the cross-sectional shape of the high-resistance film attached region of the funnel portion in the tube axis direction is shaped like a sawtooth, with a surface facing the tube axis and a surface not facing the tube axis. A color picture tube characterized in that the high-resistance film has a zigzag cross-sectional shape in the tube axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6012879A JPS6050020B2 (en) | 1979-05-15 | 1979-05-15 | color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6012879A JPS6050020B2 (en) | 1979-05-15 | 1979-05-15 | color picture tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55151754A JPS55151754A (en) | 1980-11-26 |
| JPS6050020B2 true JPS6050020B2 (en) | 1985-11-06 |
Family
ID=13133178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6012879A Expired JPS6050020B2 (en) | 1979-05-15 | 1979-05-15 | color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6050020B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0630228B2 (en) * | 1985-01-31 | 1994-04-20 | 日立粉末冶金株式会社 | CRT |
| KR900006174B1 (en) * | 1985-01-31 | 1990-08-24 | 히타찌 훈마쯔 야킨 가부시끼가이샤 | Paint for interior of CRT and CRT |
| US6211611B1 (en) * | 1997-10-13 | 2001-04-03 | Matsushita Electronics Corporation | Color cathode-ray tube with resistive spring contact |
-
1979
- 1979-05-15 JP JP6012879A patent/JPS6050020B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55151754A (en) | 1980-11-26 |
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