JPS5994337A - Structure for preventing charging on the face of cathode ray tube - Google Patents
Structure for preventing charging on the face of cathode ray tubeInfo
- Publication number
- JPS5994337A JPS5994337A JP20307482A JP20307482A JPS5994337A JP S5994337 A JPS5994337 A JP S5994337A JP 20307482 A JP20307482 A JP 20307482A JP 20307482 A JP20307482 A JP 20307482A JP S5994337 A JPS5994337 A JP S5994337A
- Authority
- JP
- Japan
- Prior art keywords
- cathode ray
- ray tube
- face
- conductive film
- deposited
- 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.)
- Granted
Links
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
- H01J29/867—Means associated with the outside of the vessel for shielding, e.g. magnetic shields
- H01J29/868—Screens covering the input or output face of the vessel, e.g. transparent anti-static coatings, X-ray absorbing layers
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
（ａ） 発明の技術分野
本発明はブラウン管のフェース構造、特にフェース表面
が帯電により汚染し画像品質の低下されること全防止す
る構造に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a face structure of a cathode ray tube, and more particularly to a structure that completely prevents the face surface from being contaminated by electrical charge and deteriorating image quality.
（ＩＪ）技術の背景
コンピュータや機器分析装置等におけるデータ表示用ブ
ラウン管、及びテレビジョン等の映像用ブラウン管に所
定の電圧を印加したとき、電子銃から電子ビームが放出
するのに先立って高電圧がブラウン管のフェースに印加
されるため、帯電したフェース表面に空気中のしん埃が
付着する。(IJ) Technology background When a predetermined voltage is applied to a data display cathode ray tube in a computer or an instrument analyzer, or a video cathode ray tube in a television, a high voltage is generated before the electron beam is emitted from the electron gun. Since the voltage is applied to the face of the cathode ray tube, dust in the air adheres to the charged face surface.
その結果、映出された画像の品位が低下し、特に分析装
置に２いて、鮮明度が損なわれ指摘すべき部位を見逃し
たり誤って判断する恐れが生じる。As a result, the quality of the projected image deteriorates, and especially in the case of an analyzer, the sharpness of the image is impaired and there is a risk that a portion to be pointed out may be overlooked or misjudged.
そして映出画像を写真撮影した場合には、フェース表面
の汚れむらが顕著に表現されるようになる。When the projected image is photographed, uneven stains on the face surface become noticeable.
（ｃ） 従来技術と問題点
しかし然ら、従来のブラウン管はフェース表面の帯電汚
染に対して構造上の対策が講じられていないため時々、
フェース表面を人手により清掃しなければηらなら煩ら
わしさがあった。と共に、清掃すべきこと及び清掃の不
完全による残存汚染を見逃すと、データ写真の撮影をや
り直さなければならない不都合があった。(c) Prior art and problems However, because conventional cathode ray tubes do not take structural measures against electrostatic contamination on the face surface, sometimes
If the face surface had to be cleaned manually, it would be troublesome. Additionally, if the remaining contamination due to incomplete cleaning is overlooked, there is the inconvenience that data photography must be taken again.
（（１） 発明の目的
本発明の目的は、上記問題点を除去し常に清浄なフェー
スを維持するブラウン管を提供することである。((1) Purpose of the Invention The purpose of the present invention is to provide a cathode ray tube that eliminates the above-mentioned problems and maintains a clean face at all times.
（Ｐ） 発明の構成
−に記の目的は、フェース表面に透明導電性膜を被着し
、該導電性膜を接地してでることを特徴とするブラウン
管のフェース表面の帯電防止構造により達成される。(P) The object set forth in Structure of the Invention is achieved by an antistatic structure on the face surface of a cathode ray tube, characterized in that a transparent conductive film is adhered to the face surface and the conductive film is grounded. Ru.
（【）発明の実施例
以下、本発明の実ｒｎ例に係わる図面を用いて本発明を
説明する。([) Embodiments of the Invention The present invention will be described below with reference to drawings relating to practical examples of the present invention.
第１図は本発明の一実施例になるブラウン管の一部を破
断した側面図であり、ブラウン管１はガラスバルブ２の
フェース内面に螢光膜３を被着しフェース表面にはＳ
ｎ’ ０２やＩｎｚ０３等にてなる透明導電性膜４が被
着され、導電性膜４はブラウン管１ｆ：装置（シャーシ
）に装着した際に接地される。FIG. 1 is a partially cutaway side view of a cathode ray tube according to an embodiment of the present invention.
A transparent conductive film 4 made of n'02, Inz03, etc. is applied, and the conductive film 4 is grounded when mounted on the cathode ray tube 1f (chassis).
このようなブラウン管１において導電性膜４は７ＪＩ］
ｐｕｓスプレー、蒸着、スパッタリング、浸漬等の手
段で被着されるが、加熱スプレー法で５ｎＯｚ膜（４）
を被着したブラウン管１の主要製造工程は下記（イ）ガ
ラスパルプ２の作成（従来方法と同じ）。In such a cathode ray tube 1, the conductive film 4 is 7JI]
It can be deposited by means such as pus spray, vapor deposition, sputtering, and dipping, but the 5nOz film can be deposited by heating spray method (4).
The main manufacturing process of the cathode ray tube 1 coated with is as follows: (a) Creation of glass pulp 2 (same as conventional method).
（ロ） ５ｎＯｚ の透明導電性１ｉＩｑ ４ ′ｆ
ｃバルブフェースの表面に被着。(b) Transparent conductivity of 5nOz 1iIq 4'f
c Adheres to the surface of the valve face.
ガラスパルプ２′Ｉｒ、数百℃に加熱し、フェース表面
に５ｎＣＡ’４の水溶液をスプレーで均一に吹付けると
、５ｎＣＡ４の加水分解により５ｎＯｚがフェース表面
に形成される。When glass pulp 2'Ir is heated to several hundred degrees Celsius and an aqueous solution of 5nCA'4 is uniformly sprayed onto the face surface, 5nOz is formed on the face surface by hydrolysis of 5nCA4.
（ハ）バルブフェースの内面に螢光膜３を被着（従来方
法と同じ〕。(c) Coat the fluorescent film 3 on the inner surface of the valve face (same as the conventional method).
に）電子銃をガラスバルブ２のネック部に装着（従来方
法と同じ）。2) Attach the electron gun to the neck of glass bulb 2 (same as the conventional method).
（ホ）ガラスパルプ２を封止（従来方法と同じ）。(e) Sealing the glass pulp 2 (same as the conventional method).
な” 、Ｓ ｎ ０２ の硬さはダイヤモンドより−
やや小さい程度であり、ＳｎＯ２を約５００ ＯＡの厚
さに被着した導電性膜４は可視光線に対する全透過率が
９０チ以上となり、ＳｎＯ２麻４の付着力。", the hardness of S n 02 is -
The conductive film 4 coated with SnO2 to a thickness of about 500 OA has a total transmittance of more than 90 cm for visible light, which is similar to the adhesion of SnO2.
硬さ、固有抵抗、透明度等はＳｎＣ／４の加水分解条件
で加水分解される他の金属塩化物全添加して制御するこ
とができる。Hardness, resistivity, transparency, etc. can be controlled by adding all other metal chlorides that are hydrolyzed under the SnC/4 hydrolysis conditions.
第２図は透明導電性Ｒｑの接地を確実にする一手段全説
明するためブラウン管の７エースを正面から見た図であ
り、第１図と共通可能部分には同一符号を用いである。FIG. 2 is a front view of the cathode ray tube 7Ace in order to fully explain one means for ensuring the grounding of the transparent conductive Rq, and the same reference numerals are used for parts that can be the same as those in FIG. 1.
第２図において、ブラウン管５はガラスバルブ２のフェ
ース表面に導電性膜４を被着し、導電性膜４の外縁に沿
って金属膜（例えばＮ１膜）６を導電性接着剤で接着、
又は蒸着等の手段で積層被着したものである。従って、
ブラウン管５の導電性膜４の接地は、金属膜４に接触又
は溶接（はんだ付、け）した導体片や導体線により確実
に施すことができる。In FIG. 2, a cathode ray tube 5 has a conductive film 4 attached to the face surface of a glass bulb 2, and a metal film (for example, N1 film) 6 is bonded along the outer edge of the conductive film 4 with a conductive adhesive.
Or, it is layered and deposited by means such as vapor deposition. Therefore,
The conductive film 4 of the cathode ray tube 5 can be reliably grounded by a conductor piece or conductor wire that is in contact with or welded (soldered or soldered) to the metal film 4 .
第３図はブラウン管５をコンピュータ等のきょう体に収
容する一実施例を説明するための部分断面図であり、プ
ラスチックをモールド成形してなるきょう休７の開口枠
の内側には、接地された導電性ゴム８が接着されており
、ブラウン管５の金ｆｆｆｉ Ｉｔ’λ６は２！￥電性
ゴム８に適宜の力で押付けられるようになっている。従
ってきょう体７は、ブラウン管の導電性膜４又は金属膜
６を直接的に接地する必要がなく、極めて実用的である
。FIG. 3 is a partial cross-sectional view for explaining an embodiment in which a cathode ray tube 5 is housed in a housing of a computer or the like. The conductive rubber 8 is glued, and the gold fffi It'λ6 of the cathode ray tube 5 is 2! It is pressed against the electrically conductive rubber 8 with an appropriate force. Therefore, the housing 7 does not require direct grounding of the conductive film 4 or metal film 6 of the cathode ray tube, and is extremely practical.
なお、本発明は上記実施例に限定されず、５ｎｏ２以外
の透明導電性膜（例えばＩｒ＋ｚＯ３の膜）ｋ使用、及
び金属膜６をループ状にパターン形成しないで対向２辺
に形成させる等、特許請求の範囲内で適宜に実施可能で
あることを付記する。It should be noted that the present invention is not limited to the above-mentioned embodiments, and includes patents such as using a transparent conductive film other than 5NO2 (for example, an Ir+zO3 film) and forming the metal film 6 on two opposite sides without forming a pattern in a loop shape. It should be noted that the invention can be implemented as appropriate within the scope of the claims.
（ｇ） 発明の詳細
な説明した如く本発明によれば、ブラウン管フェースの
帯電を無くしたことにより、フェース表面の汚れが無く
な、り煩られしい清掃作業を不要とし、画像品位が常時
確保されるようになったのみならず、ガラスよりも硬質
の透明心電性！Ｉりがブラウン管のフェースを保砕する
実用的効果は極めて太きい。(g) As described in detail, according to the present invention, by eliminating the charge on the cathode ray tube face, the face surface is free from dirt, eliminating the need for troublesome cleaning work, and ensuring image quality at all times. Not only is it now transparent, but it is also harder than glass! The practical effect of crushing the face of a cathode ray tube is extremely significant.
第１図は本発明の一実施例になるブラウン管の一部を破
断した側面図、第２図は本発明の他の一実施例になるブ
ラウン管の正面図、第３１ては第２図に示したブラウン
管の実装例を説明するための部分的側断面図である。
なお図中に分いて、１，５はブラウン管、２はガラスパ
ルプ、３は螢光膜、４は透明導電性膜、６は金属膜を示
す。FIG. 1 is a partially cutaway side view of a cathode ray tube according to an embodiment of the present invention, FIG. 2 is a front view of a cathode ray tube according to another embodiment of the invention, and FIG. FIG. 3 is a partial side sectional view for explaining an example of mounting a cathode ray tube. In the figure, 1 and 5 are cathode ray tubes, 2 is glass pulp, 3 is a fluorescent film, 4 is a transparent conductive film, and 6 is a metal film.
Claims (1)
羞 被片し、該導電性膜を接地してなることを特徴とするブ
ラウン管のフェース表面の帯電防止構造。 （２）前記導電性膜の外縁近傍に導電性金属膜を積層被
着し、該金属ｌ１ｌｊを介して前記導電性膜を接地して
なることを特徴とする特許 （１）項に記載したブラウン管のフェース表面の帯電防
止構造。[Scope of Claims] (1) An antistatic structure for the face surface of a cathode ray tube, characterized in that a transparent conductive film is coated on the face surface of the cathode ray tube, and the conductive film is grounded. (2) The cathode ray tube described in patent item (1), characterized in that a conductive metal film is laminated and deposited near the outer edge of the conductive film, and the conductive film is grounded via the metal l1lj. Antistatic structure on the face surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20307482A JPS5994337A (en) | 1982-11-19 | 1982-11-19 | Structure for preventing charging on the face of cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20307482A JPS5994337A (en) | 1982-11-19 | 1982-11-19 | Structure for preventing charging on the face of cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5994337A true JPS5994337A (en) | 1984-05-31 |
| JPH0234412B2 JPH0234412B2 (en) | 1990-08-03 |
Family
ID=16467913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20307482A Granted JPS5994337A (en) | 1982-11-19 | 1982-11-19 | Structure for preventing charging on the face of cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5994337A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59121743A (en) * | 1982-12-22 | 1984-07-13 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Face plate cooler for cathode ray tube of projecting television |
| EP0167372A2 (en) * | 1984-06-29 | 1986-01-08 | Nec Corporation | Dielectric multilayer reflector, and laser system based thereon |
| US4755716A (en) * | 1986-07-21 | 1988-07-05 | Mitsui Toatsu Chemicals, Inc. | Filter for CRT screen |
| US4785217A (en) * | 1986-12-24 | 1988-11-15 | Kabushiki Kaisha Toshiba | Cathode ray tube with antistatic film on front panel |
| EP0298582A1 (en) * | 1987-07-06 | 1989-01-11 | MITSUI TOATSU CHEMICALS, Inc. | Filter for CRT screen |
| JPS6461179A (en) * | 1987-09-01 | 1989-03-08 | Minato Electronics | Charging preventing device for crt screen |
| WO1993009559A1 (en) * | 1991-11-05 | 1993-05-13 | Mitsubishi Denki Kabushiki Kaisha | Cathode-ray tube |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06332951A (en) * | 1993-05-26 | 1994-12-02 | Yasuyoshi Ochiai | Document sorting and filing machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4842527U (en) * | 1971-09-20 | 1973-05-31 | ||
| JPS5213880U (en) * | 1975-07-16 | 1977-01-31 | ||
| JPS5430931U (en) * | 1977-08-03 | 1979-02-28 | ||
| JPS551013U (en) * | 1978-06-15 | 1980-01-07 | ||
| JPS5729828A (en) * | 1980-07-25 | 1982-02-17 | Honda Motor Co Ltd | Drum brake device |
| JPS57163664U (en) * | 1981-04-10 | 1982-10-15 |
-
1982
- 1982-11-19 JP JP20307482A patent/JPS5994337A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4842527U (en) * | 1971-09-20 | 1973-05-31 | ||
| JPS5213880U (en) * | 1975-07-16 | 1977-01-31 | ||
| JPS5430931U (en) * | 1977-08-03 | 1979-02-28 | ||
| JPS551013U (en) * | 1978-06-15 | 1980-01-07 | ||
| JPS5729828A (en) * | 1980-07-25 | 1982-02-17 | Honda Motor Co Ltd | Drum brake device |
| JPS57163664U (en) * | 1981-04-10 | 1982-10-15 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59121743A (en) * | 1982-12-22 | 1984-07-13 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Face plate cooler for cathode ray tube of projecting television |
| EP0167372A2 (en) * | 1984-06-29 | 1986-01-08 | Nec Corporation | Dielectric multilayer reflector, and laser system based thereon |
| US4755716A (en) * | 1986-07-21 | 1988-07-05 | Mitsui Toatsu Chemicals, Inc. | Filter for CRT screen |
| US4785217A (en) * | 1986-12-24 | 1988-11-15 | Kabushiki Kaisha Toshiba | Cathode ray tube with antistatic film on front panel |
| EP0298582A1 (en) * | 1987-07-06 | 1989-01-11 | MITSUI TOATSU CHEMICALS, Inc. | Filter for CRT screen |
| US4839736A (en) * | 1987-07-06 | 1989-06-13 | Mitsui Toatsu Chemicals, Inc. | Filter for CRT screen |
| JPS6461179A (en) * | 1987-09-01 | 1989-03-08 | Minato Electronics | Charging preventing device for crt screen |
| WO1993009559A1 (en) * | 1991-11-05 | 1993-05-13 | Mitsubishi Denki Kabushiki Kaisha | Cathode-ray tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0234412B2 (en) | 1990-08-03 |
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