JPS6310859B2 - - Google Patents
Info
- Publication number
- JPS6310859B2 JPS6310859B2 JP2650280A JP2650280A JPS6310859B2 JP S6310859 B2 JPS6310859 B2 JP S6310859B2 JP 2650280 A JP2650280 A JP 2650280A JP 2650280 A JP2650280 A JP 2650280A JP S6310859 B2 JPS6310859 B2 JP S6310859B2
- Authority
- JP
- Japan
- Prior art keywords
- grid
- metal vapor
- cathode ray
- voltage
- ray tube
- 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
- 239000002184 metal Substances 0.000 claims description 25
- 238000007740 vapor deposition Methods 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 239000003086 colorant Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000001883 metal evaporation Methods 0.000 description 1
- 239000004065 semiconductor 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】
本発明はカラーブラウン管に係り、特にネツク
内部に装着された電子銃の電極間にネツク内壁を
介して発生する間けつ放電を防止し得るようにな
されたカラーブラウン管に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color cathode ray tube, and more particularly to a color cathode ray tube that is capable of preventing intermittent discharge occurring between the electrodes of an electron gun mounted inside the net through the inner wall of the net. It is.
周知の通り、内面に赤、緑、青各色に発光する
螢光体層が規則的に被着形成されたパネルと、こ
のパネルに所定間隔をもつて配設されたシヤドウ
マスクと、パネルにフアンネルを介して連接され
たネツクと、このネツク内に装着された電子銃と
からなるカラーブラウン管に於て、電子銃例えば
絶縁支持体を介して所定間隔を持つように陰極、
第１グリツド、第２グリツド、第３グリツド、第
４グリツドからなるバイポテンシヤル形電子銃に
於ては、第４グリツドに陽極高電圧が印加され、
第３グリツド（フオーカス電極）及びこの第３グ
リツドとステムピンとを導接する内部リード線に
は陽極高電圧の20％程度（４〜6KV）の電圧が
印加されてこの第４グリツドと第３グリツドの対
向面に主電子レンズを形成するようになつてい
る。このようなバイポテンシヤル電子銃に於ても
陽極高電圧がネツク内壁の電位上昇をもたらし、
第３グリツドとネツク内壁間に間けつ放電が発生
し、主電子レンズの性能を悪化させたり、第３グ
リツドに異常な高電圧が印加されるためにカラー
テレビジヨン受像機内の半導体素子やICなどを
劣化させるため、この対策として所謂ガードリン
グを使用して前記間けつ放電を防止する手段が
種々考えられている。 As is well known, it consists of a panel on which phosphor layers that emit light in red, green, and blue colors are regularly deposited on the inner surface, a shadow mask arranged at predetermined intervals on this panel, and a funnel attached to the panel. In a color cathode ray tube consisting of a net connected through a wire and an electron gun mounted in the net, the electron gun has a cathode, a cathode,
In a bipotential electron gun consisting of a first grid, a second grid, a third grid, and a fourth grid, an anode high voltage is applied to the fourth grid,
A voltage of approximately 20% (4 to 6 KV) of the anode high voltage is applied to the third grid (focus electrode) and the internal lead wire that connects the third grid to the stem pin. A main electron lens is formed on the opposing surface. Even in such a bipotential electron gun, the high voltage at the anode causes an increase in the potential on the inner wall of the network.
Intermittent discharge occurs between the third grid and the inner wall of the network, deteriorating the performance of the main electron lens, and abnormally high voltage is applied to the third grid, causing damage to semiconductor elements and ICs in color television receivers. As a countermeasure against this problem, various measures have been considered to prevent the intermittent discharge by using a so-called guard ring.
更に最近になつてフオーカス改良及び輝度向上
のためフオーカス電極に陽極電圧の28乃至38％程
度（７〜10KV）の電圧を印加する電子銃を装着
したカラーブラウン管が開発されている。 Furthermore, recently, a color cathode ray tube equipped with an electron gun that applies a voltage of about 28 to 38% (7 to 10 KV) of the anode voltage to the focus electrode has been developed in order to improve focus and brightness.
次にこの様なカラーブラウン管を第１図及び第
２図によつて説明する。 Next, such a color cathode ray tube will be explained with reference to FIGS. 1 and 2.
即ち、内面に赤、緑、青各色に発光する螢光体
層が被着形成された螢光面１１を有するパネル１
２とこのパネル１２に所定間隔をもつて配設され
たシヤドウマスク１３と、パネル１２にフアンネ
ル１４を介して連接されたネツク１５と、このネ
ツク１５内に装着された電子銃１６及びステムピ
ン１７の植設されたステム１８からなり、電子銃
１６は陰極１６ｋ、第１グリツド１６1、第２グ
リツド１６2、第３グリツド１６3、第４グリツド
１６4第５グリツド１６5、及び第６グリツド１６
６が一対のガラスなどからなる絶縁支持体１６7に
所定間隔をもつように植設支持されており、第６
グリツド１６6にはコンバーゼンス電極１６8が固
定されている。 That is, the panel 1 has a phosphor surface 11 on the inner surface of which a phosphor layer that emits light in red, green, and blue colors is adhered.
2, a shadow mask 13 disposed on the panel 12 at a predetermined interval, a net 15 connected to the panel 12 via a funnel 14, and an electron gun 16 and a stem pin 17 installed in the net 15. The electron gun 16 includes a cathode 16k, a first grid 16 1 , a second grid 16 2 , a third grid 16 3 , a fourth grid 16 4 , a fifth grid 16 5 , and a sixth grid 16 .
6 are implanted and supported at a predetermined interval on a pair of insulating supports 16 7 made of glass or the like.
A convergence electrode 168 is fixed to the grid 166 .
前述した電子銃１６の第６グリツド１６6には
図示しないフアンネル内壁の内部導電膜、バルブ
スペーサ１９、コンバーゼンス電極１６8を介し
て25KV乃至30KVの陽極高電圧が印加され、第
５グリツド１６5と第３グリツド１６3は接続線２
０により導接され、更に内部リード線２１を介し
てステムピン１７に接続され7KV乃至10KVの中
電圧が印加され、第４グリツド１６4と第２グリ
ツド１６2は接続線２２により導接され、更に内
部リード線２３を介してステムピン１７に接続さ
れ数100Vの低電圧が印加されるようになつてい
る。 An anode high voltage of 25 KV to 30 KV is applied to the sixth grid 166 of the electron gun 16 through an internal conductive film on the inner wall of the funnel (not shown), a valve spacer 19, and a convergence electrode 168 , and the fifth grid 165 and The third grid 16 3 is the connection line 2
The fourth grid 164 and the second grid 162 are electrically connected to each other by a connecting wire 22, and are further connected to the stem pin 17 via an internal lead wire 21 to which a medium voltage of 7KV to 10KV is applied. It is connected to the stem pin 17 via an internal lead wire 23, and a low voltage of several hundred volts is applied thereto.
この様な電子銃は第５グリツド１６5第４グリ
ツド１６4及び第３グリツド１６3により補助電子
レンズ、第６グリツド１６6と第５グリツド１６5
に主電子レンズが形成され、フオーカス改良及び
輝度向上に極めて良好な特性を有しているが、構
造としては複雑になり、またフオーカス電極であ
る第３グリツド１６3と第５グリツド１６5には従
来のバイポテンシヤル形電子銃のフオーカス電極
よりも高い電圧が印加されているため、この第３
グリツド１６3と第５グリツド１６5に対応するネ
ツク１５内壁の電位も高くなり、かつ第３グリツ
ド１６3及び第５グリツド１６5の電圧とネツク１
５内壁の電位により第４グリツド１６4から電子
ビームが規定外の方向に引き出される所謂ビーム
漏れが発生し、このビーム漏れによる電子ビーム
がネツク内壁に当り、このネツク内壁の電位を更
に上昇させ低電圧の印加されている第４グリツド
１６4とこのグリツド１６4に対応するネツク内壁
の電位差が大となり、ネツク内壁と第４グリツド
１６4との間で間けつ放電が発生し易く、この放
電による放電電流及び第４グリツド１６4の電圧
が高くなりカラーテレビジヨン受像機内のトラン
ジスタやICなどの劣化などを引き起し、受像機
の故障となる欠点があつた。 Such an electron gun is constructed by a fifth grid 165, a fourth grid 164 and a third grid 163, an auxiliary electron lens, a sixth grid 166 and a fifth grid 165.
The main electron lens is formed in the 3rd grid 163 and the 5th grid 165 , which are the focus electrodes, and has extremely good characteristics for improving focus and brightness, but the structure is complicated. Because a higher voltage is applied to the focus electrode of conventional bipotential electron guns, this third
The potential of the inner wall of the net 15 corresponding to the grid 16 3 and the fifth grid 16 5 also becomes high, and the voltage of the third grid 16 3 and the fifth grid 16 5 and the net 1
A so-called beam leakage occurs in which the electron beam is extracted from the fourth grid 164 in an unspecified direction due to the potential on the inner wall of the fifth grid, and the electron beam due to this beam leakage hits the inner wall of the neck, further increasing the potential of the inner wall of the neck and lowering it. The potential difference between the fourth grid 164 to which voltage is applied and the inner wall of the network corresponding to this grid 164 becomes large, and intermittent discharge is likely to occur between the inner wall of the network and the fourth grid 164 . This has the disadvantage that the discharge current and the voltage of the fourth grid 164 become high, causing deterioration of transistors, ICs, etc. in the color television receiver, resulting in failure of the receiver.
本発明は前記従来のカラーブラウン管の諸欠点
に鑑みなされたものであり、前述した間けつ放電
を防止し得るカラーブラウン管を提供することを
目的としている。 The present invention has been made in view of the various drawbacks of the conventional color cathode ray tubes, and an object of the present invention is to provide a color cathode ray tube that can prevent the above-mentioned intermittent discharge.
次に本発明のカラーブラウン管の一実施例を第
３図乃至第５図により説明する。 Next, an embodiment of a color cathode ray tube according to the present invention will be described with reference to FIGS. 3 to 5.
即ち、内面に赤、緑、青各色に発光する螢光体
層が被着形成された螢光面３１を有するパネル３
２に所定間隔をもつて配設されたシヤドウマスク
３３と、パネル３２にフアンネル３４を介して連
接されたネツク３５と、このネツク３５内に装着
された電子銃３６及びステムピン３７の植設され
たステム３８からなり、電子銃３６は陰極３６
ｋ、第１グリツド３６1、第２グリツド３６2、第
３グリツド３６3、第４グリツド３６4、第５グリ
ツド３６5及び第６グリツド３６6が一対のガラス
などからなる絶縁支持体３６7に所定間隔をもつ
ように植設支持されており、第６グリツド３６6
にはコンバーゼンス電極３６8が固定されている。 That is, the panel 3 has a phosphor surface 31 on the inner surface of which a phosphor layer that emits light in red, green, and blue colors is adhered.
2, a shadow mask 33 arranged at a predetermined distance from the panel 32, a neck 35 connected to the panel 32 via a funnel 34, and a stem having an electron gun 36 and a stem pin 37 installed in the neck 35. 38, the electron gun 36 has a cathode 36
k, a first grid 36 1 , a second grid 36 2 , a third grid 36 3 , a fourth grid 36 4 , a fifth grid 36 5 and a sixth grid 36 6 are mounted on a pair of insulating supports 36 7 made of glass or the like. They are planted and supported at predetermined intervals, and the sixth grid 36
A convergence electrode 368 is fixed to.
前述した電子銃３６の第６グリツド３６6には
図示しないフアンネル内壁の内部導電膜、バルブ
スペーサ３９、コンバーゼンス電極３６8を介し
て25KV乃至30KVの陽極高電圧が印加され、第
５グリツド３６5と第３グリツド３６3は接続線４
０により導接され、更に内部リード線４１を介し
てステムピン３７に接続され、7KV乃至10KVの
中電圧が印加され、第４グリツド３６4と第２グ
リツド３６2は接続線４２により導接され、更に
内部リード線４３を介してステムピン３７に接続
され、数100Vの低電圧が印加されるようになつ
ているのは従来のカラーブラウン管とほぼ同様で
あるが、本実施例に於ては前述した第４グリツド
３６4に対応する絶縁支持体３６7を取り囲み、か
つ第４グリツドに導接する線状や板状の被蒸着金
属４４を設けておき、カラーブラウン管組立工程
に於て、この金属線４４をネツク３５外部より高
周波などで蒸発させて第５図に示すように第４グ
リツド３６4に導接する第１の金属蒸着被膜４５
と、この第１の金属蒸着被膜４５に対応するネツ
ク３５内面に第２の金属蒸着被膜４６を設けたこ
とを特徴としている。 An anode high voltage of 25 KV to 30 KV is applied to the sixth grid 366 of the electron gun 36 through an internal conductive film on the inner wall of the funnel (not shown), a valve spacer 39 , and a convergence electrode 368 . The third grid 36 3 is the connection line 4
0, and further connected to the stem pin 37 via an internal lead wire 41, to which a medium voltage of 7KV to 10KV is applied, and the fourth grid 364 and the second grid 362 are electrically connected by a connection wire 42. Furthermore, it is connected to the stem pin 37 via an internal lead wire 43, and a low voltage of several hundred volts is applied thereto, which is almost the same as a conventional color cathode ray tube. A metal wire 44 in the form of a wire or plate is provided to surround the insulating support 367 corresponding to the fourth grid 364 and to be connected to the fourth grid. The first metal evaporated film 45 is evaporated from the outside of the network 35 using high frequency waves or the like and connected to the fourth grid 364 as shown in FIG.
A second metal vapor deposition film 46 is provided on the inner surface of the neck 35 corresponding to the first metal vapor deposition film 45.
この様に絶縁支持体３６7の低電圧の印加され
る第４グリツド３６4に対応する位置にこの第４
グリツド３６4に導接する第１の金属蒸着被膜４
５を設けると共に、この第１の金属蒸着被膜４５
に対応するネツク３５内壁に第２の金属蒸着被膜
４６を設けることにより、第２の金属蒸着被膜４
６が第３グリツド３６3、第５グリツド３６5の
7KV乃至10KV程度の中電圧によりチヤージアツ
プされるが、このチヤージされた電圧が、この部
分の微小な気体イオンなど及び第１の金属蒸着被
膜４５を介して第４グリツド３６4にスローリー
クされある安定した電位近傍で安定するし、また
第１の金属蒸着膜４５は絶縁支持体３６7の第４
グリツド３６4植設部を中心として一種の高抵抗
を形成するので絶縁支持体３６7表面の急激な電
位差をなくし、この第１の金属蒸着被膜４５を第
４グリツド３６4に導接して絶縁支持体３６7を囲
むように形成してあるので、この附近の電界を均
一にすることが可能となる。これらを総合して述
べると、第１の金属蒸着被膜４５と第２の金属蒸
着被膜４６を設けることにより、ネツク３５内壁
及び絶縁支持体３６7の部分的な電位上昇を阻止
し、第３グリツド３６3第５グリツド３６5の印加
電圧が高くなつても第１の金属蒸着被膜４５及び
第２の金属蒸着被膜４６が電界シールドの役目を
するため、第４グリツド３６4からのビーム漏れ
による間けつ放電を阻止することが可能となり、
このようなカラーブラウン管をテレビジヨン受像
機に組込むことによつて受像機内部のトランジス
タやICを劣化することが皆無となつた。 In this way, the fourth grid 364 is placed on the insulating support 367 at a position corresponding to the fourth grid 364 to which a low voltage is applied.
First metallized coating 4 in contact with grid 36 4
5, and this first metal vapor deposition film 45
By providing the second metal vapor deposition film 46 on the inner wall of the neck 35 corresponding to the
6 is the third grid 36 3 and the fifth grid 36 5
It is charged up by a medium voltage of about 7KV to 10KV, but this charged voltage slowly leaks to the fourth grid 364 through the minute gas ions in this part and the first metal vapor deposition film 45, and becomes stable. The first metal vapor deposited film 45 is stable near the potential of the insulating support 367 .
Since a kind of high resistance is formed around the implanted part of the grid 364 , a sudden potential difference on the surface of the insulating support 367 is eliminated, and this first metal vapor deposition film 45 is connected to the fourth grid 364 to provide an insulating support. Since it is formed so as to surround the body 367 , it is possible to make the electric field in this vicinity uniform. To summarize these points, by providing the first metal vapor deposition film 45 and the second metal vapor deposition film 46, a partial potential increase of the inner wall of the net 35 and the insulating support 367 is prevented, and the third grid 36 3 Even if the voltage applied to the fifth grid 36 5 becomes high, the first metal evaporated film 45 and the second metal evaporated film 46 serve as electric field shields, so that the beam leakage from the fourth grid 36 4 can cause It becomes possible to prevent spark discharge,
By incorporating such a color cathode ray tube into a television receiver, there is no possibility of deterioration of the transistors or ICs inside the receiver.
前述した実施例に於ては第１グリツド乃至第６
グリツドを有する特殊構造の電子銃を内装するカ
ラーブラウン管について述べたが絶縁支持体に植
設された低電圧の印加されるグリツドに導接する
ようにこの絶縁支持体を取り囲むように第１の金
属蒸着被膜を設け、この第１の金属蒸着被膜に対
応するネツク内面に第２の金属蒸着被膜を設ける
ことにより他の構造の電子銃を装着したカラーブ
ラウン管にも、そのまま適用出来ることは云うま
でもない。 In the embodiment described above, the first to sixth grids
We have described a color cathode ray tube incorporating an electron gun with a special structure having a grid, and a first metal evaporation tube is formed to surround the insulating support so as to be connected to the grid embedded in the insulating support and to which a low voltage is applied. It goes without saying that by providing a film and providing a second metal vapor deposition film on the inner surface of the neck corresponding to the first metal vapor deposition film, it can be applied as is to color cathode ray tubes equipped with electron guns of other structures. .
第１図及び第２図は従来のカラー受像管の一例
を示す図であり第１図は簡略断面図、第２図は電
子銃を装着したネツクの要部説明図、第３図乃至
第５図は本発明のカラーブラウン管の一実施例を
示す図であり、第３図は簡略断面図、第４図は絶
縁支持体に金属線を設けた電子銃を内装するネツ
クの要部説明図、第５図は金属線を蒸発し、第１
の金属蒸着膜及び第２の金属蒸着膜を設けたネツ
クの要部説明図である。
１１，３１……螢光膜、１２，３２……パネ
ル、１５，３５……パネル、１６，３６……電子
銃、４４……被蒸着金属、４５……第１の金属蒸
着膜、４６……第２の金属蒸着膜。
1 and 2 are diagrams showing an example of a conventional color picture tube, in which FIG. 1 is a simplified sectional view, FIG. The figures show an embodiment of a color cathode ray tube according to the present invention, in which Fig. 3 is a simplified cross-sectional view, Fig. 4 is an explanatory view of the main part of a network that houses an electron gun with a metal wire provided on an insulating support; Figure 5 shows that the metal wire is evaporated and the first
FIG. 2 is an explanatory diagram of the main parts of a net provided with a metal vapor deposited film and a second metal vapor deposited film. 11, 31... Fluorescent film, 12, 32... Panel, 15, 35... Panel, 16, 36... Electron gun, 44... Metal to be vapor deposited, 45... First metal vapor deposited film, 46... ...Second metal vapor deposition film.
Claims (1)
規則的に被着形成されたパネルと、このパネルに
フアンネルを介して連接されたネツクと、このネ
ツク内に装着され陰極、第１グリツド及び他の複
数のグリツドが絶縁支持体を介してそれぞれ所定
間隔を持つように植設されると共に前記他のグリ
ツドに陽極高電圧及び低電圧が印加されるように
なされた電子銃とを具備するカラーブラウン管に
於て、前記複数個のグリツドのうち低電圧の印加
されるグリツドに対応する前記絶縁支持体を取り
囲み、かつこのグリツドに導接する第１の金属蒸
着被膜と、この第１の金属蒸着被膜にほぼ対応す
る前記ネツク内面に被着形成された第２の金属蒸
着被膜とを具備することを特徴とするカラーブラ
ウン管。1 A panel on which phosphor layers that emit light in red, green, and blue colors are regularly deposited on the inner surface, a neck connected to this panel via a funnel, and a cathode and a third 1 grid and a plurality of other grids are implanted at predetermined intervals through an insulating support, and an anode high voltage and low voltage are applied to the other grids. In the color cathode ray tube comprising: a first metal vapor deposition film surrounding the insulating support corresponding to the grid to which a low voltage is applied among the plurality of grids and being connected to the grid; A color cathode ray tube comprising: a second metal vapor-deposited coating formed on the inner surface of the neck substantially corresponding to the metal vapor-deposited coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2650280A JPS56123651A (en) | 1980-03-05 | 1980-03-05 | Color cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2650280A JPS56123651A (en) | 1980-03-05 | 1980-03-05 | Color cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56123651A JPS56123651A (en) | 1981-09-28 |
| JPS6310859B2 true JPS6310859B2 (en) | 1988-03-09 |
Family
ID=12195254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2650280A Granted JPS56123651A (en) | 1980-03-05 | 1980-03-05 | Color cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56123651A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57119437A (en) * | 1981-01-16 | 1982-07-24 | Nec Corp | Cathode ray tube |
| JPS59160945A (en) * | 1983-03-03 | 1984-09-11 | Toshiba Corp | Color picture tube |
-
1980
- 1980-03-05 JP JP2650280A patent/JPS56123651A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56123651A (en) | 1981-09-28 |
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