JPH0479099B2 - - Google Patents
Info
- Publication number
- JPH0479099B2 JPH0479099B2 JP21436683A JP21436683A JPH0479099B2 JP H0479099 B2 JPH0479099 B2 JP H0479099B2 JP 21436683 A JP21436683 A JP 21436683A JP 21436683 A JP21436683 A JP 21436683A JP H0479099 B2 JPH0479099 B2 JP H0479099B2
- Authority
- JP
- Japan
- Prior art keywords
- electron beam
- metal back
- image display
- display device
- electrode
- 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
- 238000010894 electron beam technology Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 17
- 239000011521 glass Substances 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 11
- 238000009499 grossing Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/123—Flat display tubes
- H01J31/125—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection
- H01J31/126—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection using line sources
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、画像表示装置に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to an image display device.
従来例の構成とその問題点
従来、複数本の線状電子源から電子ビームを取
り出し、この電子ビームを制御、偏向、集束、加
速してメタルバツクおよび蛍光体膜を有するスク
リーン板に射突させ文字、画像等を表示する画像
表示装置が提案されており、この画像表示装置の
スクリーン板は、ガラス基板あるいは、表示面ガ
ラス容器内面上にメタルバツクおよび蛍光体膜を
形成したものであり、メタルバツクには高圧発生
回路により発生された数KV〜10数KVの高電圧
が印加される。Conventional structure and its problems Conventionally, electron beams are extracted from multiple linear electron sources, and the electron beams are controlled, deflected, focused, and accelerated to strike a metal back and a screen plate having a phosphor film to produce characters. , an image display device for displaying images, etc. has been proposed, and the screen plate of this image display device has a metal back and a phosphor film formed on a glass substrate or the inner surface of a display surface glass container. A high voltage of several kilovolts to tens of kilovolts generated by a high voltage generation circuit is applied.
この高圧発生回路は通常数ＫHz〜数10KHzの高
周波パルスをトランスにより昇圧し、ダイオード
等により整流、平滑コンデンサにより平滑化を行
なう回路であり、通常のブラウン管においては前
記平滑コンデンサは、バルブ内のフアンネル部分
に形成されるが、上記画像表示においては、構造
上バルブ内にブラウン管のフアンネル部分に相当
する。前記平滑コンデンサを形成するスペースが
なく、数KV〜10数KVの高耐圧な平滑コンデン
サを外部に配置することが必要であるという欠点
があつた。 This high voltage generation circuit normally boosts high frequency pulses of several KHz to several tens of KHz using a transformer, rectifies them using diodes, etc., and smoothes them using a smoothing capacitor. In the above image display, it structurally corresponds to the funnel part of a cathode ray tube inside the bulb. There was a drawback that there was no space to form the smoothing capacitor, and it was necessary to arrange a smoothing capacitor with a high withstand voltage of several KV to 10-odd KV outside.
発明の目的
本発明は上記従来の欠点を除去するため、平滑
コンデンサを画像表示装置の蛍光体膜形成面の対
面に透明な導電性膜を形成し外部平滑コンデンサ
を不要とすることを目的とする。Purpose of the Invention In order to eliminate the above-mentioned conventional drawbacks, the present invention aims to eliminate the need for an external smoothing capacitor by forming a transparent conductive film on the opposite side of the phosphor film forming surface of an image display device. .
発明の構成
本発明の画像表示装置は、電子ビーム源と、電
子ビーム源から電子ビームを取り出すための電子
ビーム取り出し手段と、電子ビームと制御するた
めの電子ビーム制御手段と、電子ビームの射突に
より画像表示を行うガラス板上に形成された蛍光
体膜およびメタルバツクからなるスクリーン板と
を備え、前記ガラス板の蛍光体膜およびメタルバ
ツク形成面の対面に透明な導電性膜を形成し、こ
の導電性膜と前記メタルバツクとの間の静電容量
を高圧発生回路の平滑コンデンサとすることを特
徴とする。Configuration of the Invention The image display device of the present invention includes an electron beam source, an electron beam extraction means for taking out the electron beam from the electron beam source, an electron beam control means for controlling the electron beam, and an electron beam impingement device. a screen plate consisting of a phosphor film formed on a glass plate and a metal back for displaying an image, a transparent conductive film is formed on the opposite side of the surface of the glass plate on which the phosphor film and the metal back are formed; The electrostatic capacitance between the electrostatic film and the metal bag is used as a smoothing capacitor of the high voltage generation circuit.
実施例の説明
本発明の実施例における画像表示装置を第１図
を用いて説明する。この画像表示装置は後方から
前方に向つて順に背面電極１、ビーム源としての
複数本の線陰極２（ここでは２イ〜２ニの４本の
み図示する）、線陰極２より電子ビームを前方向
に取り出しかつ垂直方向に集束させる電極３，
３′、垂直方向の偏向電極４、電子ビームを映像
信号により変調する制御電極５、水平方向の集束
電極６、水平方向の偏向電極７、ビーム加速電極
８、電子ビームの射突により発生するスクリーン
９により構成され、これらが扁平なガラスバルブ
（図示せず）の真空になされた内部に収納される。DESCRIPTION OF EMBODIMENTS An image display device according to an embodiment of the present invention will be described with reference to FIG. This image display device consists of, in order from the back to the front, a back electrode 1, a plurality of line cathodes 2 as beam sources (here, only four line cathodes 2A to 2D are shown), and an electron beam placed in front of the line cathodes 2. an electrode 3 which is taken out in the direction and focused in the vertical direction;
3', a vertical deflection electrode 4, a control electrode 5 that modulates the electron beam with a video signal, a horizontal focusing electrode 6, a horizontal deflection electrode 7, a beam acceleration electrode 8, a screen generated by the collision of the electron beam; 9, which are housed in the evacuated interior of a flat glass bulb (not shown).
スクリーン９はガラス板１０（ガラスバルブの
前面ガラスを用いてもよい）の裏面に電子ビーム
の照射によつて発光する蛍光体膜１１およびメタ
ルバツク１２により構成され、メタルバツク１２
には数KV〜10数KVの高電圧が印加される。 The screen 9 is composed of a metal back 12 and a phosphor film 11 that emits light when irradiated with an electron beam on the back surface of a glass plate 10 (the front glass of a glass bulb may be used).
A high voltage of several kilovolts to several tens of kilovolts is applied to the.
このような画像表示装置において、ガラス板１
０の蛍光体膜１１およびメタルバツク１２の形成
面の対面に透明な導電性膜１３を形成し、この導
電性膜１３とメタルバツク１２との間の容量をメ
タルバツク１２に印加される高電圧を発生する高
圧発生回路の平滑コンデンサとした。具体的には
スクリーンサイズ20cm×30cmとし、ガラス板１０
には厚さ３mmのものを用い、その表面に透明な導
電性膜としてIn2O3を蒸着した。その結果メタル
バツク１２との間に約900PFの静電容量が得られ
た。 In such an image display device, a glass plate 1
A transparent conductive film 13 is formed on the opposite side of the surface where the phosphor film 11 and the metal back 12 are formed, and the capacitance between the conductive film 13 and the metal back 12 is used to generate a high voltage applied to the metal back 12. It was used as a smoothing capacitor for the high voltage generation circuit. Specifically, the screen size is 20cm x 30cm, and the glass plate is 10.
A 3 mm thick one was used, and In 2 O 3 was deposited on its surface as a transparent conductive film. As a result, a capacitance of approximately 900PF was obtained between the metal bag 12 and the metal bag 12.
次に前記透明な導電性膜１３とメタルバツク１
２間の静電容量を平滑コンデンサとして用いた。
高圧発生回路について第２図を用いて説明する。
第２図は通常のテレビジヨンセツトに用いられる
高電圧発生回路と同様のものであり、（１４は偏
向コイルに相当するダミーコイル）平滑コンデン
サ１５は前記透明な導電性膜１３とメタルバツク
１２間の静電容量900PF、動作周波数はfH
（15.734264KHz）、出力電圧は10KVである。また
出力電流すなわちメタルバツク１２に照射される
電子ビーム流の平均値は約150μAであり、この時
の出力電圧のリツプルは約10Vであり、充分に平
滑化された出力を得ることができる。 Next, the transparent conductive film 13 and the metal back 1
The capacitance between the two was used as a smoothing capacitor.
The high voltage generation circuit will be explained using FIG. 2.
FIG. 2 shows a high voltage generating circuit similar to that used in a normal television set (14 is a dummy coil corresponding to a deflection coil), and a smoothing capacitor 15 is connected between the transparent conductive film 13 and the metal back 12. Capacitance 900PF, operating frequency is fH
(15.734264KHz), output voltage is 10KV. Further, the average value of the output current, that is, the electron beam current irradiated to the metal back 12, is about 150 μA, and the ripple of the output voltage at this time is about 10 V, making it possible to obtain a sufficiently smoothed output.
発明の効果
本発明の画像表示装置はスクリーン板表面に透
明な導電性膜を形成することにより、高圧発生回
路の平滑コンデンサとして充分な容量のコンデン
サを画像表示装置に内蔵することができその効果
は大きい。Effects of the Invention By forming a transparent conductive film on the surface of the screen plate, the image display device of the present invention can incorporate a capacitor with sufficient capacity as a smoothing capacitor in the high voltage generation circuit. big.
第１図は本発明の一実施例の画像表示装置の基
本的な構成を示す図、第２図は同装置における高
圧発生回路を示す図である。
１……背面電極、２……線陰極、３……垂直集
束電極、４……垂直偏向電極、５……ビーム流制
御電極、６……水平集束電極、７……水平偏向電
極、８……ビーム加速電極、９……スクリーン
板、１０……ガラス板、１１……蛍光体膜、１２
……メタルバツク、１３……透明な導電性膜、１
４……ダミーコイル、１５……平滑コンデンサ。
FIG. 1 is a diagram showing the basic configuration of an image display device according to an embodiment of the present invention, and FIG. 2 is a diagram showing a high voltage generation circuit in the same device. DESCRIPTION OF SYMBOLS 1... Back electrode, 2... Line cathode, 3... Vertical focusing electrode, 4... Vertical deflection electrode, 5... Beam flow control electrode, 6... Horizontal focusing electrode, 7... Horizontal deflection electrode, 8... ...beam accelerating electrode, 9...screen plate, 10...glass plate, 11...phosphor film, 12
...Metal bag, 13...Transparent conductive film, 1
4...Dummy coil, 15...Smoothing capacitor.
Claims (1)
から電子ビームを取り出すための電子ビーム取り
出し手段と、電子ビームを制御するための電子ビ
ーム制御手段と、電子ビームの射突により画像表
示を行うガラス板上に形成された蛍光体膜および
メタルバツクからなるスクリーン板とを備え、前
記ガラス板の蛍光体膜およびメタルバツク形成面
の対面に透明な導電性膜を形成したことを特徴と
する画像表示装置。1. A line cathode as an electron beam source, an electron beam extraction means for extracting an electron beam from the line cathode, an electron beam control means for controlling the electron beam, and a glass for displaying an image by impacting the electron beam. 1. An image display device comprising a screen plate comprising a phosphor film formed on a plate and a metal back, and a transparent conductive film is formed on the opposite side of the surface of the glass plate on which the phosphor film and metal back are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21436683A JPS60107243A (en) | 1983-11-14 | 1983-11-14 | Image display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21436683A JPS60107243A (en) | 1983-11-14 | 1983-11-14 | Image display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60107243A JPS60107243A (en) | 1985-06-12 |
| JPH0479099B2 true JPH0479099B2 (en) | 1992-12-15 |
Family
ID=16654594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21436683A Granted JPS60107243A (en) | 1983-11-14 | 1983-11-14 | Image display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60107243A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61183853A (en) * | 1985-02-08 | 1986-08-16 | Matsushita Electric Ind Co Ltd | Image display device |
| JPH0743934Y2 (en) * | 1989-04-28 | 1995-10-09 | 三洋電機株式会社 | Flat light emitting device |
| JP2008128396A (en) | 2006-11-22 | 2008-06-05 | Jtekt Corp | Sealing device |
-
1983
- 1983-11-14 JP JP21436683A patent/JPS60107243A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60107243A (en) | 1985-06-12 |
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