JPS6369119A - Shadowmask surface treatment - Google Patents

Shadowmask surface treatment

Info

Publication number
JPS6369119A
JPS6369119A JP21482486A JP21482486A JPS6369119A JP S6369119 A JPS6369119 A JP S6369119A JP 21482486 A JP21482486 A JP 21482486A JP 21482486 A JP21482486 A JP 21482486A JP S6369119 A JPS6369119 A JP S6369119A
Authority
JP
Japan
Prior art keywords
electron gun
shadow mask
coating liquid
electron beam
coating
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
Application number
JP21482486A
Other languages
Japanese (ja)
Inventor
Mutsumi Hattori
睦 服部
Katsuhiro Ono
克弘 大野
Kunio Takeoka
武岡 国生
Tetsuya Watanabe
徹也 渡辺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP21482486A priority Critical patent/JPS6369119A/en
Publication of JPS6369119A publication Critical patent/JPS6369119A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a color cathode-ray tube with high color purity by setting, at the time of forming a paint film that includes heavy metals on the surface of a color selection shadowmask to be built in a color cathode-ray tube, a distance between the side surface of a shadowmask opposing an electron gun and a sprayer to such a value as allowing fall of atomized liquid paint. CONSTITUTION:A liquid paint 15 including heavy metals such as bismuth and tantalum or oxides thereof is sprayed from a sprayer 17 by means of a nozzle and applied to the surface 4(a), opposing an electron gun, of a shadowmask 4 provided with multiple slits 5. Here, the distance between the surface 4(a), to be painted, of the mask 4 and the sprayer 17 is so set as to allow natural fall of atomized liquid paint. Then, water is applied to the painted surface 4(a), followed by the application of liquid paint 15. In this way, a cathode-ray tube with good color purity can be obtained without causing deposition of liquid pain 15 on the inner wall of the slits 5 serving as electron transmission apertures, and bulging of the peripheries of the slits 5.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明はカラー陰極線管に内蔵される色選別電極であ
るシャドウマスクの表面処理方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for surface treatment of a shadow mask, which is a color selection electrode built into a color cathode ray tube.

〔従来の技術〕[Conventional technology]

カラー陰極線管におけるシャドウマスクの製造方法につ
いては、株式会社産報の電子科学1964年、VOL、
141  NO,9,36頁および、39〜40頁に示
されている。ところで、一般的に陰極線管は、第5図に
示す様に、皿状のガラス管容器であるパネル(1)と、
電子ビームを発射する電子銃(2)を内蔵しているロー
ト状のファンネル(3)とからなり、これらパネル(1
)とファンネル(3)との間に色選別電極としてのシャ
ドウマスク(4)が介在され、パネル(1)に支持部に
より保持されている。
Regarding the manufacturing method of shadow masks in color cathode ray tubes, please refer to Sanpo Co., Ltd.'s Electronic Science 1964, VOL.
141 NO, pages 9, 36 and 39-40. By the way, as shown in FIG. 5, a cathode ray tube generally consists of a panel (1) which is a dish-shaped glass tube container, and
It consists of a funnel-shaped funnel (3) containing an electron gun (2) that emits an electron beam, and these panels (1)
) and the funnel (3), a shadow mask (4) as a color selection electrode is interposed, and is held on the panel (1) by a support section.

このシャドウマスク(4)は、厚さが0.10〜0.2
5mmの鉄板に丸形もしくは長方形の電子ビーム通過孔
(5)をエツチング法等で形成したものであり、初行程
では平担な形状である上記鉄板を水素雰囲気中で700
〜920℃で熱処理してから、パネル(1)内面の球面
形状にほぼ沿う形状にプレス加工し、そののち、その表
面に黒錆を得るための表面処理を堀こして作成される。
This shadow mask (4) has a thickness of 0.10 to 0.2
A round or rectangular electron beam passage hole (5) is formed on a 5 mm iron plate by etching, etc. In the first step, the iron plate has a flat shape and is heated to 700 mm in a hydrogen atmosphere.
After heat treatment at ~920° C., the panel (1) is pressed into a shape that roughly follows the spherical shape of the inner surface, and then a surface treatment to obtain black rust is applied to the surface.

この処理で得られた黒錆は、カラー陰極線管を製造する
工程中において、シャドウマスク(4)が、空気中の雰
囲気で400℃前後で加熱される際に発生する赤錆を防
止するためのものである。一方、カラー陰極線管の動作
中に電子銃(2)から発射された電子ビームの8割近く
は、シャドウマスク(4)に衝突して、運動エネルギー
が然エネルギーに変換され、シャドウマスク(4)の温
度を上昇させる。このため、シャドウマスク(4)は、
熱変形を生じ、電子ビームの蛍光面へのランディングの
変化をもたらす、この現象をドーミングという。
The black rust obtained through this treatment is to prevent red rust that occurs when the shadow mask (4) is heated to around 400 degrees Celsius in an air atmosphere during the process of manufacturing color cathode ray tubes. It is. On the other hand, nearly 80% of the electron beam emitted from the electron gun (2) during the operation of the color cathode ray tube collides with the shadow mask (4), and the kinetic energy is converted into natural energy. increase the temperature. Therefore, the shadow mask (4) is
This phenomenon, which causes thermal deformation and changes the landing of the electron beam on the phosphor screen, is called doming.

また、最近のカラー陰極線管では、映像をより忠実に再
現するために、パネル(1)の前面を平担化したり、単
位面積当りの情報量を多くしたりしており、さらに1画
質を鮮明にするためにシャドウマスク(4)の電子ビー
ム通過孔(5)の孔径を小さくするとともにピッチも小
さくしている。このため、ドーミング現象が映像に与え
る悪影響がより顕著なものとなるので、ドーミング現象
の対策が極めて重要になってきた。
In addition, in recent color cathode ray tubes, in order to reproduce images more faithfully, the front surface of the panel (1) is flattened and the amount of information per unit area is increased, and the image quality is further improved. In order to achieve this, the hole diameter of the electron beam passing holes (5) of the shadow mask (4) is made small, and the pitch is also made small. For this reason, the adverse effects of the doming phenomenon on images become more pronounced, and countermeasures against the doming phenomenon have become extremely important.

そこで、ドーミング現象の対策の一つとして、たとえば
、特開昭55−76553時公報に開示されるように、
シャドウマスク(4)の電子銃(2)側の表面に、たと
えば、ビスマス、タンタル等の重金属またはその酸化物
を含んだ塗膜(6)を設けることが行なわれている。こ
の塗膜(8)は、衝突する電子ビームを効率よく反射さ
せ、衝突した電子ビームの圧動エネルギーが熱エネルギ
ーに変換される割合を減少させて、シャドウマスク(4
)の温度上昇を軽減するものであり、たとえば、酸化ビ
スマス(Bi203)に水ガラス等を加えてなる塗液が
スプレィ塗布されて形成される。
Therefore, as one of the countermeasures against the doming phenomenon, for example, as disclosed in Japanese Patent Application Laid-Open No. 55-76553,
A coating film (6) containing a heavy metal such as bismuth or tantalum or an oxide thereof is provided on the surface of the shadow mask (4) on the electron gun (2) side. This coating film (8) efficiently reflects the colliding electron beam and reduces the rate at which the pressure energy of the colliding electron beam is converted into thermal energy.
), and is formed by spray coating a coating liquid made by adding water glass or the like to bismuth oxide (Bi203), for example.

ここで、スプレィされた塗液が電子ビーム通過孔(5)
の内壁に付着すると、電子ビーム通過孔(5)を通過す
る電子ビームの散乱を招くことになるので、塗液をスプ
レィ塗布する際には、たとえば特公昭60−14459
号公報に開示されるように塗液をパネル(1)の側から
吸引しながら、シャドウマスク(4)の電子銃(2)側
の面に向けてスプレィして、電子ビーム通過孔(5)の
内壁への塗液の付着を防止していた。
Here, the sprayed coating liquid is applied to the electron beam passage hole (5).
If it adheres to the inner wall of the electron beam passage hole (5), it will cause scattering of the electron beam passing through the electron beam passage hole (5).
As disclosed in the publication, the coating liquid is sucked from the panel (1) side and sprayed toward the electron gun (2) side surface of the shadow mask (4) to form the electron beam passage hole (5). This prevents the coating liquid from adhering to the inner walls of the

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従来のシャドウマスクの表面処理方法では、シャドウマ
スク(4)の電子銃(2)側の面(以下。
In the conventional shadow mask surface treatment method, the surface of the shadow mask (4) on the electron gun (2) side (hereinafter referred to as "the surface") on the electron gun (2) side.

「塗布面」という、)に向けてスプレィされる塗液がパ
ネル(1)の側から吸引されているので、塗液が電子ビ
ーム通過孔(5)を早い速度で通過する。
Since the coating liquid sprayed toward the "coating surface" is attracted from the panel (1) side, the coating liquid passes through the electron beam passage hole (5) at a high speed.

このため、スプレィされた塗液は、塗布面における電子
ビーム通過孔(5)の周囲に多く付着することになり、
また、上記電子ビーム通過孔(5)の周囲は、吸引にと
もなう空気流を受けるので塗液の乾燥が早く、塗布面上
での塗液の流動がない。
For this reason, a large amount of the sprayed coating liquid will adhere to the area around the electron beam passage hole (5) on the coating surface.
Further, since the area around the electron beam passage hole (5) receives air flow due to suction, the coating liquid dries quickly and there is no flow of the coating liquid on the coating surface.

このようにして塗布面に形成された塗膜(8)は、その
断面を第6図に示すように、電子ビーム通過孔(5)の
周囲の部分が、他の部分よりも厚くふくらむことになる
As shown in the cross section of the coating film (8) thus formed on the coating surface, the area around the electron beam passage hole (5) swells thicker than other areas. Become.

電子ビーム通過孔(5)の周囲が厚くふくらんだ塗膜(
6)は、厚くふくらんだ部分が、たとえば、蛍光体G1
を発光させるべき電子ビーム束の軌道(7)内に侵入す
ることになり、電子ビーム(8)が上記ふくらんだ部分
で散乱して軌道を変更し、蛍光体Glを発光させずに他
の蛍光体を発光させて、カラー陰J4線管の色純度を低
下させるという問題点があった。
A thick, swollen coating film (
6), the thick swollen part is, for example, phosphor G1.
enters the orbit (7) of the electron beam bundle that should emit light, and the electron beam (8) is scattered by the bulged portion and changes its orbit, causing other fluorescent light to emit light without causing the phosphor Gl to emit light. There was a problem in that the color purity of the color shade J4 ray tube was reduced by emitting light from the body.

この発明は上記のような問題点を解決するためになされ
たものであり、色純度の高いカラー陰極線管の製造に寄
与できるシャドウマスクの表面処理方法を提供すること
を目的とする。
The present invention was made to solve the above-mentioned problems, and it is an object of the present invention to provide a method for surface treatment of a shadow mask that can contribute to the manufacture of color cathode ray tubes with high color purity.

〔問題点を解決するための手段〕[Means for solving problems]

この発明にかかるシャドウマスクの表面処理方法は、シ
ャドウマスクの電子銃側の面を上に向け、スプレィ装置
から上記電子銃側の面までの距離を、霧化された塗液が
L配電子銃側の面に自然落下し得る大きさに設定してお
き、上記電子銃側の面に水を塗布したのちに、上記電子
銃側の面に向けて塗液をスプレィする。
In the surface treatment method for a shadow mask according to the present invention, the surface of the shadow mask on the electron gun side is turned upward, and the atomized coating liquid is spread over the distance from the spray device to the surface on the electron gun side. The size is set so that it can naturally fall onto the side surface, and after applying water to the surface facing the electron gun, the coating liquid is sprayed toward the surface facing the electron gun.

〔作用〕[Effect]

この発す1において、スプレィ装置から、シャドウマス
クの電子銃側の面に向けて塗液がスプレイされても、ス
プレィ装置から上記電子銃側の面までの距離が、霧化さ
れた塗液が上記電子銃側の面に自然落下し得る大きさに
設定されているので一上記電子銃側の面付近には、スプ
レィにともなう気流の乱れが生じない、このため、霧化
された塗液は、シャドウマスクの電子ビーム通過孔の内
壁に付着せずに、電子ビーム通過孔を通過するので、電
子ビーム通過孔内の障害物とならない。
In this emitting step 1, even if the coating liquid is sprayed from the spray device toward the electron gun side surface of the shadow mask, the distance from the spray device to the electron gun side surface is such that the atomized coating liquid is Since the size is set so that it can naturally fall onto the surface on the electron gun side, turbulence in the airflow accompanying the spray does not occur near the surface on the electron gun side.Therefore, the atomized coating liquid Since the electron beam passes through the electron beam passage hole without adhering to the inner wall of the electron beam passage hole of the shadow mask, it does not become an obstruction within the electron beam passage hole.

また、霧化された塗液が上記電子銃側の面に到達するま
でに乾燥したとしても、上記電子銃側の而にはあらかじ
め水が塗布されているので、乾燥した塗液は上記電子銃
側の面上で水と混ざり合って再生される。このため、再
生された塗液が表面張力を受けるとともに、十分に時間
をかけて乾燥するから、塗膜は、電子ビーム通過孔の周
囲の部分が、他の部分より薄く形成されるので、電子ビ
ーム通過孔を通過すべき電子ビームの軌道をさえぎらな
い。
Furthermore, even if the atomized coating liquid dries before reaching the surface on the electron gun side, the surface on the electron gun side has already been coated with water, so the dried coating liquid will not reach the surface on the electron gun side. It is mixed with water and regenerated on the side surface. For this reason, the recycled coating liquid is subjected to surface tension and takes a sufficient amount of time to dry, making the coating film thinner in the area around the electron beam passage hole than in other areas. Do not obstruct the trajectory of the electron beam that should pass through the beam passage hole.

〔発明の実施例〕[Embodiments of the invention]

以下、この発明の一実施例を図面にしたがって説Ill
する。
An embodiment of this invention will be described below with reference to the drawings.
do.

第1図に示すように、この実施例では、まず、工程(1
1)でシャドウマスクの塗布面に、水を、たとえば、ス
プレィ塗布し、そののち、工程(12)で。
As shown in FIG. 1, in this example, first, step (1)
In step 1), water is applied, for example, by spraying, to the application surface of the shadow mask, and then in step (12).

上記塗布面に向けて重金属を含んだ塗液をスプレィ塗布
して、工程(13)で上記塗液を乾燥させる。
A coating liquid containing heavy metals is spray-coated onto the coating surface, and the coating liquid is dried in step (13).

上記工程(11)で塗布面にスプレィ塗布された水は、
第2図のように、塗膜(14)を形成し、水の塗膜(1
4)は1表面張力のために、電子ビーム通過孔(5)の
周囲の部分が他の部分より薄く形成されている。
The water sprayed onto the coating surface in step (11) above is
As shown in Figure 2, a coating film (14) is formed and a coating film (14) of water is formed.
4) Due to surface tension, the area around the electron beam passage hole (5) is formed thinner than other areas.

第3図は、上記工程(12)で塗布面(4a)に向けて
塗液(15)をスプレィする装置の構成図である。同図
において、(4)はシャドウマスクであり、塗布面(4
a)を上に向けて配置されている。 (1B)はマスキ
ング治具であり、このマスキング治具(16)は。
FIG. 3 is a configuration diagram of an apparatus that sprays the coating liquid (15) toward the coating surface (4a) in the step (12). In the figure, (4) is a shadow mask, and the coating surface (4) is a shadow mask.
a) is placed with the side facing upward. (1B) is a masking jig, and this masking jig (16) is.

シャドウマスク(4)を保持するとともに、シャドウマ
スク(4)における塗膜が不要な部分を覆う。
While holding the shadow mask (4), the coating film covers unnecessary parts of the shadow mask (4).

(17)はスプレィ装置、つまり、スプレィ用ノズルで
あり、シャドウマスク(4)の上方に配置され、前後左
右に移動しながら塗布面(4a)に向けて塗液(15)
をスプレィする。
(17) is a spray device, that is, a spray nozzle, which is placed above the shadow mask (4) and sprays the coating liquid (15) toward the coating surface (4a) while moving back and forth and left and right.
Spray.

ここで、たとえば、水の塗膜(14) (第2図)は、
厚さが3〜5JLmのものであり、塗液(15)は、粒
径が9.5〜IJLmの酸化ビスマス(Bi203)に
水およびカリウム系水ガラスを加えてなる粘度が2 p
asのものであり、塗液(15)をスプレィ用ノズル(
17)からスプレィする際に使用される圧縮空気は2〜
4Kg/crn’のものであり、スプレィ用ノズル(1
7)からシャドウマスク(4)の塗布面(4a)までの
距離は100〜150cmとなっている。
Here, for example, the water coating (14) (Fig. 2) is
The thickness is 3 to 5 JLm, and the coating liquid (15) is made by adding water and potassium water glass to bismuth oxide (Bi203) with a particle size of 9.5 to IJLm and has a viscosity of 2 p.
As, the coating liquid (15) is sprayed through a spray nozzle (
The compressed air used when spraying from 17) is 2~
4Kg/crn', spray nozzle (1
The distance from 7) to the coating surface (4a) of the shadow mask (4) is 100 to 150 cm.

上記構成において、塗液(15)は、スプレィ用ノズル
(17)から、圧縮空気とともにスプレィされるので、
塗液(15)をスプレィする際には気流の乱れがともな
う、ところが、スプレィ用ノズル(17)から塗布面(
4a)までの距離が十分に大きく設定されているので、
塗布面(4a)付近には気流の乱れが主面(4a)に到
達するときには、その速度が自重で落下する速度にまで
低下しており、1浅(15)は塗布面(4a)に対して
自然落下する。
In the above configuration, since the coating liquid (15) is sprayed together with compressed air from the spray nozzle (17),
When spraying the coating liquid (15), airflow turbulence occurs, but the spray nozzle (17) does not spray the coating surface (
Since the distance to 4a) is set sufficiently large,
Near the coating surface (4a), when the turbulence of the airflow reaches the main surface (4a), its speed has decreased to the speed at which it falls due to its own weight, and 1 shallow (15) is relative to the coating surface (4a). and fall naturally.

このため、スプレィされた塗液(15)は、シャドウマ
スク(4)の電子ビーム通過孔(5)の内壁に付着する
ことなく、電子ビーム通過孔(5)を通過するので、電
子ビーム通過孔(5)内の障害物にならない。
Therefore, the sprayed coating liquid (15) passes through the electron beam passage hole (5) without adhering to the inner wall of the electron beam passage hole (5) of the shadow mask (4). (5) Do not become an obstacle inside.

また、スプレィ用ノズル(17)から塗布面(4a)ま
での距離が大きいので、スプレィされた塗液(15)は
、塗布面(4a)に到達するまでに乾燥してしまうが、
上記塗布面(4a)には、あらかじめ、水の塗膜(14
) (第2図)が形成されているから、乾燥した塗液(
15)は塗布面(4a)上で水と混ざり合って再生され
る。このため、再生された塗液(15)には表面張力が
作用する。そののち、塗液(15)が工程(13)(第
1図)で乾燥すると、第4図のように、塗膜(8)は、
電子ビーム通過孔(5)の周囲の部分が他の部分よりも
薄く形成されるので、電子ビーム通過孔(5)を通過し
て所望の蛍光体を発光させるべき電子ビームの軌道(7
)をさえぎることがないから、電子ビームを散乱させな
い。
Furthermore, since the distance from the spray nozzle (17) to the coating surface (4a) is long, the sprayed coating liquid (15) dries before reaching the coating surface (4a).
The coating surface (4a) is coated with a water coating (14
) (Fig. 2), so the dried coating liquid (
15) is mixed with water on the coating surface (4a) and regenerated. Therefore, surface tension acts on the regenerated coating liquid (15). After that, when the coating liquid (15) is dried in step (13) (Fig. 1), the coating film (8) is formed as shown in Fig. 4.
Since the area around the electron beam passage hole (5) is formed thinner than other areas, the trajectory (7) of the electron beam that passes through the electron beam passage hole (5) and causes the desired phosphor to emit light is
), so the electron beam is not scattered.

したがって、カラー陰極線管は色純度の高いものとなる
Therefore, the color cathode ray tube has high color purity.

〔発明の効果〕〔Effect of the invention〕

以上のようにこの発明によれば、シャドウマスクに衝突
する電子ビームを反射させてシャドウマスクの熱変形を
防止する塗膜を、電子ビーム通過孔を通過する電子ビー
ムの散乱を招かないものとして形成することができるの
で、色純度の高いカラー陰極線管を得ることができる。
As described above, according to the present invention, a coating film that prevents thermal deformation of the shadow mask by reflecting the electron beam that collides with the shadow mask is formed so as not to cause scattering of the electron beam that passes through the electron beam passage hole. Therefore, a color cathode ray tube with high color purity can be obtained.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の一実施例を示すシャドウマスクの表
面処理工程のブロック図、第2図は水が塗布されたシャ
ドウマスクの断面図、第3図は塗液の塗布装置の斜視図
、第4図は塗膜が形成されたシャドウマスクの断面図、
第5図はカラー陰極線管の部分断面図、第6図は従来の
方法により塗膜が形成されたシャドウマスクの断面図で
ある。 (2)・・・電子銃、(4)・・・シャドウマスク、(
4a)・・・電子銃側の面、(6)・・・塗膜、(15
)・・・塗液、(17)・・・スプレィ装置。 なお、図中、同一符号は同一または相当部分を示す。
FIG. 1 is a block diagram of a surface treatment process for a shadow mask showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of a shadow mask coated with water, and FIG. 3 is a perspective view of a coating liquid application device. Figure 4 is a cross-sectional view of the shadow mask with the coating film formed.
FIG. 5 is a partial sectional view of a color cathode ray tube, and FIG. 6 is a sectional view of a shadow mask on which a coating film is formed by a conventional method. (2)...Electron gun, (4)...Shadow mask, (
4a)...Electron gun side surface, (6)...Coating film, (15
)...Coating liquid, (17)...Spray device. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] (1)カラー陰極線管に内蔵される色選別電極でなるシ
ヤドウマスクの電子銃側の面に、重金属を含む塗液をス
プレィ塗布して電子ビームを反射させる塗膜を形成する
シヤドウマスクの表面処理方法において、上記電子銃側
の面を上に向け、スプレィ装置から上記電子銃側の面ま
での距離を、霧化された塗液が上記電子銃側の面に自然
落下し得る大きさに設定し、上記電子銃側の面に水を塗
布したのちに、上記電子銃側の面に向けて塗液をスプレ
ィするシヤドウマスクの表面処理方法。
(1) In a method for surface treatment of a shadow mask, which involves spraying a coating liquid containing heavy metals on the electron gun side surface of the shadow mask, which is a color selection electrode built into a color cathode ray tube, to form a coating film that reflects the electron beam. , with the electron gun side surface facing upward, and setting the distance from the spray device to the electron gun side surface to a size that allows the atomized coating liquid to naturally fall onto the electron gun side surface; A method for surface treatment of a shadow mask, in which water is applied to the surface on the electron gun side, and then a coating liquid is sprayed toward the surface on the electron gun side.
JP21482486A 1986-09-10 1986-09-10 Shadowmask surface treatment Pending JPS6369119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21482486A JPS6369119A (en) 1986-09-10 1986-09-10 Shadowmask surface treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21482486A JPS6369119A (en) 1986-09-10 1986-09-10 Shadowmask surface treatment

Publications (1)

Publication Number Publication Date
JPS6369119A true JPS6369119A (en) 1988-03-29

Family

ID=16662136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21482486A Pending JPS6369119A (en) 1986-09-10 1986-09-10 Shadowmask surface treatment

Country Status (1)

Country Link
JP (1) JPS6369119A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960019435A (en) * 1994-11-22 1996-06-17 윤종용 Manufacturing method of shadow mask

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960019435A (en) * 1994-11-22 1996-06-17 윤종용 Manufacturing method of shadow mask

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