JPH03192637A - Flat display - Google Patents

Flat display

Info

Publication number
JPH03192637A
JPH03192637A JP33159389A JP33159389A JPH03192637A JP H03192637 A JPH03192637 A JP H03192637A JP 33159389 A JP33159389 A JP 33159389A JP 33159389 A JP33159389 A JP 33159389A JP H03192637 A JPH03192637 A JP H03192637A
Authority
JP
Japan
Prior art keywords
electrode
electron beam
scanning direction
electron
vertical deflection
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
Application number
JP33159389A
Other languages
Japanese (ja)
Other versions
JP2890571B2 (en
Inventor
Toshio Oboshi
敏夫 大星
Akira Nakayama
昭 中山
Junichi Inoue
潤一 井上
Masaru Yamaguchi
優 山口
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP33159389A priority Critical patent/JP2890571B2/en
Priority to US07/631,148 priority patent/US5220240A/en
Priority to EP90124940A priority patent/EP0434054B1/en
Priority to DE69021523T priority patent/DE69021523T2/en
Publication of JPH03192637A publication Critical patent/JPH03192637A/en
Application granted granted Critical
Publication of JP2890571B2 publication Critical patent/JP2890571B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE:To provide a display of a large size, uniform and good picture quality, and resistance against external pressure such as atmospheric pressure by disposing an electrode structure between a vertical deflection yoke and a phosphor surface, the structure which comprises a dividing electrode for dividing the electron beam from an electron gun into a plural number of beams, a modifying electrode, and horizontal deflection electrode. CONSTITUTION:A vertical deflection electrode 3 comprising a plural number of parallel electrodes 3a extending along the horizontal scanning direction is disposed on the inner surface of a back panel 1B opposite a phosphor surface 2 of a front panel 1F of a flat tube body 1. An electron structure 7 comprising a dividing electrode 4 for dividing an electron beam (b) from an electron gun 10 into a plural number of beams, a modifying electrode 5, and a horizontal deflection electrode 6 is disposed between the vertical deflection electrode 3 and the phosphor surface 2. Electron beam from the electron gun intersects the front panel 1F and the back panel 1B at right angles and is introduced between the electrode structure 7 and the vertical deflection electrode 3 with the beam cross section along the horizontal scanning direction in the shape of a band or a line. This prevents nonuniformity in the brightness of the display surface due to the large size of the display and makes the display stand the external pressure such as atmospheric pressure.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は各種画像表示を行うことができるようにした平
面型表示装置に係わる。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a flat display device capable of displaying various images.

〔発明の概要〕[Summary of the invention]

本発明は平面型表示装置に係わり、平面型管体の前面パ
ネルの内面に螢光面が配置され、この螢光面との対向部
より垂直走査方向にずれた位置に電子銃が配置され、平
面型管体の前面パネルと対向する背面パネルの内面の螢
光面との対向部に、水平走査方向に沿って延長する複数
の平行電極よりなる垂直偏向電極が配置され、これと螢
光面との間の空間に、電極銃からの電子ビームを複数の
ビームに分割する分割電極と、変調電極と、水平偏向電
極とを少なくとも有する電極構体が配置され、この電極
構体と背面パネルとの間に電極構体を前面パネルに向っ
て押圧して上記前面パネルと背面パネルとの空間を支持
する高抵抗支持壁をその板面が垂直走査方向に沿い、か
つ両パネルと直交するように介在させてなり、電子銃か
らの電子ビームは、そのほぼ両パネルと直交しかつ水平
走査方向に沿うビーム断面がほぼ帯状ないしは線状をも
って電極構体と垂直偏向電極との間に導入されるように
なされるものであり、このようにして大面積の平面型表
示装置を大気圧等の外圧に充分耐えてしかも均一な優れ
た画質の表示を行うことができるようにする。
The present invention relates to a flat display device, in which a fluorescent surface is arranged on the inner surface of the front panel of a flat tube body, and an electron gun is arranged at a position offset in the vertical scanning direction from the part facing the fluorescent surface. A vertical deflection electrode consisting of a plurality of parallel electrodes extending along the horizontal scanning direction is disposed at a portion facing the fluorescent surface on the inner surface of the back panel facing the front panel of the flat tube body. An electrode assembly having at least a dividing electrode for dividing the electron beam from the electrode gun into a plurality of beams, a modulation electrode, and a horizontal deflection electrode is disposed in the space between the electrode assembly and the back panel. A high-resistance support wall that presses the electrode structure toward the front panel and supports the space between the front panel and the rear panel is interposed so that its plate surface is along the vertical scanning direction and perpendicular to both panels. The electron beam from the electron gun is introduced between the electrode assembly and the vertical deflection electrode so that the beam cross section along the horizontal scanning direction is substantially perpendicular to both panels and has a substantially band-like or linear shape. In this way, a large-area flat panel display device can sufficiently withstand external pressure such as atmospheric pressure, and can display uniform and excellent image quality.

〔従来の技術〕[Conventional technology]

平面型表示装置すなわちパネル型表示装置としては種々
の提案がなされている。例えば特開平1−173555
号公開公報には2次電子増倍型のパネル型陰極線管の提
案がなされている。この種平面型表示装置において例え
ば40インチ型等の広面積の表示装置への適用が望まれ
ている。
Various proposals have been made as flat display devices, that is, panel display devices. For example, JP-A-1-173555
In the publication No. 1, a proposal is made for a secondary electron multiplier type panel cathode ray tube. It is desired that this type of flat display device be applied to a wide area display device such as a 40-inch type display device.

この種の平面型表示装置においては、前記特開平1−1
73555号公開公報に開示された陰極線管型の表示装
置におけるように複数のカソードないしはフィラメント
が設けられて、これより発生させた熱電子を螢光面に向
かわしめてこれを表示信号に応じて変調して各部の螢光
面を発光させて目的とする表示を行うものであるが、こ
のように複数のカソード(フィラメント)を配置して画
面の各部の発生を分担させる場合、そのカソード相互の
特性のバラツキによって各部−様な明るさの画像表示を
行わしめることに問題が生ずる場合がある。
In this type of flat display device, the above-mentioned Japanese Patent Application Laid-open No. 1-1
As in the cathode ray tube type display device disclosed in Publication No. 73555, a plurality of cathodes or filaments are provided, and thermionic electrons generated by the cathodes or filaments are directed toward a fluorescent surface and modulated in accordance with a display signal. The desired display is performed by making the fluorescent surfaces of each part emit light. However, when multiple cathodes (filaments) are arranged in this way and each part of the screen is responsible for generating light, the characteristics of the cathodes are different from each other. Due to variations, problems may occur in displaying images with varying brightness in different parts.

またこの種の表示装置の広画面化に伴い、その平面型の
管体の大気圧等の外圧に対する耐圧の考慮が必要となる
。このために例えば上述の平面型陰極線管では、その平
面型管体の相対向する前面パネルと背面パネルとの間の
支持を行うことのできる井桁状の電極を設けてこれによ
って両パネル間の間隔の支持すなわち耐圧に対処するこ
とが行われるが、この場合においてこの井桁状電極の存
在による電界の歪などによる電子ビームのむらの問題も
考慮する必要が生じていて必ずしも平面型管体の両パネ
ルの支持体としての井桁状電極による画像低下の回避が
満足されていない。
Further, as the screen of this type of display device becomes wider, it is necessary to consider the withstand pressure of the flat tube body against external pressure such as atmospheric pressure. For this purpose, for example, in the above-mentioned flat cathode ray tube, cross-shaped electrodes are provided that can support the opposing front and back panels of the flat tube body. However, in this case, it is also necessary to consider the problem of unevenness of the electron beam due to distortion of the electric field due to the presence of the cross-shaped electrodes, and it is not always necessary to Avoidance of image deterioration due to parallel cross-shaped electrodes as a support is not satisfied.

上述したような複数のカソード(フィラメント)を設け
ることを回避して表示画像に対して例えば1本のカソー
ドを設けることの構造は、例えば特開昭60−1151
34号公報にもその開示あるところであるが、この場合
においては、上述した大(広)画面表示における耐圧の
問題の考慮がなされていない。
A structure in which, for example, one cathode is provided for a display image without providing a plurality of cathodes (filaments) as described above is disclosed in, for example, Japanese Patent Application Laid-Open No. 60-1151.
This is also disclosed in Publication No. 34, but in this case, the above-mentioned problem of withstand voltage in large (wide) screen display is not taken into consideration.

〔発明が解決しようとする課題] 本発明は、平面型表示装置においてその大画面化に伴う
表示画面の明るさのむらの問題の解決及び大気圧すなわ
ち外圧に対する平面型管体の機械的強度の問題の解決を
図ることを目的とする。
[Problems to be Solved by the Invention] The present invention solves the problem of uneven brightness of a display screen due to enlargement of the screen in a flat display device, and the problem of mechanical strength of a flat tube against atmospheric pressure, that is, external pressure. The purpose is to solve the following problems.

〔課題を解決するための手段〕[Means to solve the problem]

本発明は、第1図にその一例の正面図を示し、第2図に
上面図を示し、第3図にその路線的断面図を示すように
、平面型管体(1)の前面パネル(IF)の内面に螢光
面(2)が配置され、この螢光面(2)との対向部より
垂直走査方向にずれた位置に電子銃(10)が配置され
て成る。
The present invention has a front panel ( A fluorescent surface (2) is disposed on the inner surface of the IF), and an electron gun (10) is disposed at a position offset in the vertical scanning direction from a portion facing the fluorescent surface (2).

平面型管体(1)の前面パネル(IF)と対向する背面
パネル(IB)の内面の螢光面(2)との対向部には、
水平走査方向に沿って延長する複数の平行電極(3a)
よりなる垂直偏向電極(3)が配置される。
In the portion facing the fluorescent surface (2) on the inner surface of the back panel (IB) facing the front panel (IF) of the flat tube body (1),
A plurality of parallel electrodes (3a) extending along the horizontal scanning direction
A vertical deflection electrode (3) is arranged.

そしてこの垂直偏向電極(3)と螢光面(2)との間の
空間に、電子銃(10)からの電子ビームbを複数のビ
ームに分割する分割電極(4)と、変調電極(5)と、
水平偏向電極(6)とを少なくとも有する電極構体(7
)が配置される。
In the space between the vertical deflection electrode (3) and the fluorescent surface (2), there is a dividing electrode (4) for dividing the electron beam b from the electron gun (10) into a plurality of beams, and a modulation electrode (5). )and,
an electrode assembly (7) having at least a horizontal deflection electrode (6);
) is placed.

さらにこの電極構体(7)と背面パネル(IB)との間
に電極構体(7)を前面パネル(IF)に向って押圧し
て前面パネル(IF)と背面パネル(IB)との空間を
支持する複数の高抵抗支持壁(8)を所要のピッチPを
もってその板面が垂直走査方向に沿いかつ両バネル(I
F)及び(IB)と直交するように介在されてなる。
Furthermore, between this electrode structure (7) and the back panel (IB), the electrode structure (7) is pressed toward the front panel (IF) to support the space between the front panel (IF) and the back panel (IB). A plurality of high-resistance supporting walls (8) are arranged at a required pitch P so that their plate surfaces are along the vertical scanning direction and both panels (I
F) and (IB) are interposed perpendicularly to each other.

また、電子銃からの電子ビームは、はぼ両パネル(IF
)及び(IB)と直交し、かつその水平走査方向に沿う
ビーム断面がほぼ帯状ないしは線状をもって電極構体(
7)と垂直偏向電極(3)との間に導入されるようにす
る。
In addition, the electron beam from the electron gun is transmitted to both panels (IF
) and (IB), and the beam cross section along the horizontal scanning direction is approximately strip-like or linear.
7) and the vertical deflection electrode (3).

尚、本明細書において、水平及び垂直走査方向とは、物
理的水平及び垂直を指称するものではなく、画面上での
互いに直交する2方向を指称するものである。
Note that in this specification, the horizontal and vertical scanning directions do not refer to the physical horizontal and vertical directions, but to two mutually orthogonal directions on the screen.

〔作用] 上述の構成において、電子銃構体(力と垂直偏向電極(
3)との間の空間に沿って導入された電子銃(10)か
らの帯状ないしは線状の電子ビームbは、垂直偏向電極
(3)の平行電極(3a)に順次垂直走査周期に同期し
て所要の電圧を印加することによって電子銃構体(7)
側に向う偏向電界を形成して電子ビームbの垂直走査を
行わしめるものであり、更にこのようにして垂直偏向さ
れた電子ビームbは、分割電極(4)によって複数ビー
ムに分割されて螢光面(2)に向わしめるようになされ
る。
[Operation] In the above configuration, the electron gun structure (force and vertical deflection electrode (
A band-shaped or linear electron beam b from the electron gun (10) introduced along the space between By applying the required voltage to the electron gun assembly (7)
The electron beam b is vertically scanned by forming a sideward deflection electric field, and the electron beam b vertically deflected in this way is split into multiple beams by a splitting electrode (4) to emit fluorescent light. It is made to face the surface (2).

このように、本発明による平面型表示装置においては、
1本の電子ビームbを用いることから、画面の各部をそ
れぞれ別のカソードからのビームによって分担させる場
合に比し明るさのむらが回避される。
In this way, in the flat display device according to the present invention,
Since one electron beam b is used, unevenness in brightness can be avoided compared to the case where each part of the screen is divided into beams from different cathodes.

さらにまた両前面パネル(IF)及び背面パネル(IB
)間には電極構体(7)と背面パネル(IB)との間に
その板面方向が垂直走査方向に延びるように配置された
高抵抗支持壁(8)によって支持されるものであるので
、電子銃(10)からの螢光面(2)に向う電子ビーム
bの通路の妨げとなることが回避され、しかもその支持
壁(8)が高抵抗支持壁によって構成されていることに
よって、この支持壁(8)が接触する電極構体(7)と
垂直偏向電極(3)との間の電位差が支持壁(8)の高
さh方向に亘って漸次均等に変化する電位分布となるこ
とによって電界の乱れが回避され、この支持壁の存在に
よる電子ビームの乱れが回避される。
Furthermore, both front panels (IF) and back panels (IB)
) is supported by a high-resistance support wall (8) arranged between the electrode structure (7) and the back panel (IB) so that the plate surface direction extends in the vertical scanning direction. Obstruction of the path of the electron beam b from the electron gun (10) toward the fluorescent surface (2) is avoided, and since the support wall (8) is constituted by a high-resistance support wall, this The potential difference between the electrode structure (7) and the vertical deflection electrode (3) with which the support wall (8) is in contact becomes a potential distribution that gradually and uniformly changes over the height h direction of the support wall (8). Disturbances of the electric field are avoided and disturbances of the electron beam due to the presence of this support wall are avoided.

[実施例] 図面を参照して本発明による平面型表示装置の実施例を
詳細に説明する。
[Example] An example of a flat display device according to the present invention will be described in detail with reference to the drawings.

本発明においては、平面型管体(1)が用いられる。In the present invention, a flat tubular body (1) is used.

この平面型管体(1)は、少なくとも光透過性の前面パ
ネル(IF)と背面パネル(IB)が周側壁(IS)を
介して気密的に封着されてなる。(21)は平面型管体
の排気がなされ排気後にこれが封止されるチップオフ管
を示す。前面パネル(IF)、背面パネル(IB)及び
周側壁(IS)は例えばガラス板によって形成されて互
いにガラスフリット付けされる。
This flat tube body (1) has at least a light-transmissive front panel (IF) and a back panel (IB) that are hermetically sealed together via a peripheral side wall (IS). (21) shows a tip-off tube in which a flat tube body is evacuated and then sealed after being evacuated. The front panel (IF), the rear panel (IB) and the peripheral side wall (IS) are formed, for example, from glass plates and are glass fritted together.

前面パネル(IF)の内側には、直接的にあるいは他の
透明基板に形成された螢光面(2)が塗布して配置され
、通常のようにこの螢光面(2)にはM蒸着膜等による
メタルバックが施される。
On the inside of the front panel (IF), a fluorescent surface (2) formed directly or on another transparent substrate is arranged by coating, and as usual, M vapor deposition is applied to this fluorescent surface (2). A metal back with a film or the like is applied.

また背面パネル(IB)には、直接的にあるいは他の基
板上に形成された垂直偏向電極(3)が配置され、この
垂直偏向電極(3)と螢光面(2)との間に、垂直偏向
電極(3)と所要の間隔を保持して電極構体(7)が配
置される。この垂直偏向電極(3)は、第3図と共に、
第4図に正面側からみた各電極のパターン図を示し、第
5図に断面図を示すように、金属蒸着膜あるいはスクリ
ーン印刷によるカーボン塗膜等によって所要の幅及び間
隔をもって水平走査方向に沿って延長する複数特に垂直
走査線数例えば480本〜525本の平行電極(3a)
が配置されてなる。
Further, a vertical deflection electrode (3) formed directly or on another substrate is arranged on the back panel (IB), and between this vertical deflection electrode (3) and the fluorescent surface (2), An electrode structure (7) is arranged with a required spacing from the vertical deflection electrode (3). This vertical deflection electrode (3) is shown in FIG.
Fig. 4 shows the pattern of each electrode seen from the front side, and Fig. 5 shows a cross-sectional view. As shown in Fig. 5, a metal vapor-deposited film or a carbon coating film by screen printing is applied to the electrodes with the required width and spacing along the horizontal scanning direction. In particular, the number of parallel electrodes (3a) extending from 480 to 525, especially vertical scanning lines.
are arranged.

そして、螢光面(2)との対向部から垂直走査方向にず
れて電子銃(10)が配置される。この電子銃(lO)
は、例えば熱電子放出物質が塗布され、水平走査方向に
延長する共通の線状ないしは帯状のカソードにと、これ
に正対して水平走査方向にそれぞれ延びるスリットが配
置されてなる第1.第2゜第3のグリッド電極C,,C
,,C,を有して成る。
Then, an electron gun (10) is disposed offset in the vertical scanning direction from a portion facing the fluorescent surface (2). This electron gun (lO)
The first cathode is coated with, for example, a thermionic emission material, and has a common linear or band-shaped cathode extending in the horizontal scanning direction, and slits each extending in the horizontal scanning direction are arranged directly opposite the common linear or band-shaped cathode. 2nd and 3rd grid electrodes C,,C
,,C,.

この電子銃(10)は電極構体(7)と垂直偏向電極(
3)との空間に対向するように配置される。
This electron gun (10) consists of an electrode structure (7) and a vertical deflection electrode (
3) is arranged so as to face the space with.

この電子銃(10)は、そのカソードKから熱電子を放
出させて得た電子ビームbがクロスオーバーポイントを
形成することだなく、パネル(IF)及び(IB)の板
面方向と直交しかつ水平走査方向に沿う断面が線状ない
しは帯状をなす層流ビームとじて電極構体(7)と垂直
偏向電極(3)との間の空間に沿って導入されるように
なされる。
In this electron gun (10), the electron beam b obtained by emitting thermoelectrons from the cathode K does not form a crossover point, but is perpendicular to the plane direction of the panels (IF) and (IB). A laminar beam having a linear or strip-shaped cross section along the horizontal scanning direction is introduced along the space between the electrode structure (7) and the vertical deflection electrode (3).

第6図はその電子銃(10)の電位分布とこれによって
形成される層流の電子ビームbの態様を示すようにした
もので、第6図の紙面と直交するビーム断面、すなわち
パネル(IB)及び(IF)と直交し、水平走査線方向
に沿うビーム断面は線状ないしは帯状をなす。
Figure 6 shows the potential distribution of the electron gun (10) and the form of the laminar electron beam b formed thereby. ) and (IF), and the beam cross section along the horizontal scanning line direction is linear or strip-shaped.

一方この平行電極(3a)よりなる垂直偏向電極(3)
と螢光面(2)との間に電極構体(7)と、この電極構
体(7)と背面パネル(IB)との間に介在させる高抵
抗支持壁(8)とが配置される。電極構体(7)は少な
くとも分割電極(4)と変調電極(5)と水平偏向電極
(6)とを有してなる。
On the other hand, a vertical deflection electrode (3) consisting of this parallel electrode (3a)
An electrode assembly (7) is disposed between the electrode assembly (7) and the fluorescent surface (2), and a high-resistance support wall (8) interposed between the electrode assembly (7) and the back panel (IB). The electrode structure (7) includes at least a split electrode (4), a modulation electrode (5) and a horizontal deflection electrode (6).

分割電極(4)は例えば第4図及び第5図と共に、第7
図に分解斜視図を示すように、所要のピッチPAL例え
ば2fflI11ピツチをもって垂直走査方向に延長し
、平行配列された多数本のスリットSLが穿設されてな
る電極板によって構成し得る。
The divided electrode (4) is, for example, in FIGS. 4 and 5 as well as in FIG.
As shown in the exploded perspective view in the figure, it can be constructed by an electrode plate having a required pitch PAL, for example, 2fflI11 pitch, extending in the vertical scanning direction and having a large number of slits SL arranged in parallel.

また、変調電極(5)は、分割電極(4)のスリン)S
Lに対応して設けられたスリット状の電子ビーム透過孔
hHが穿設された絶縁基板3.4に、その各スリット状
の電子ビーム透過孔h4の周辺にそれぞれ電子ビーム透
過孔り、に関して独立に設けられた電極導電JE!(5
a)が被着されてなる。
In addition, the modulation electrode (5) is the divided electrode (4) S
An insulating substrate 3.4 is provided with slit-shaped electron beam transmission holes hH provided corresponding to L, and electron beam transmission holes are formed around each of the slit-shaped electron beam transmission holes h4, respectively. Electrode conductivity provided in JE! (5
a) is applied.

また水平偏向電極(6)は、複数枚例えば図示の例にお
いては2枚の電極部(6八)及び(6B)の積層構造を
採る。各電極部(6A)及び(6B)は、例えばそれぞ
れ分割電極(4)のスリン)SL及び変調電極(5)の
電子ビーム透過孔り、に対応して設けられた電子ビーム
透過孔hHI及びhNtを有する絶縁基板SKI及びS
OZを存し、各電子ビーム透過孔h)+1及びhH’1
に対応してそれぞれその両側にのぞんでそれぞれ対の導
電層(6al)(6bl)及び(6az) (6bz)
が被着形成されてなる。
Further, the horizontal deflection electrode (6) has a laminated structure of a plurality of electrode parts (68) and (6B) in the illustrated example. Each electrode part (6A) and (6B) has an electron beam transmission hole hHI and hNt provided corresponding to, for example, the electron beam transmission hole hHI and hNt of the divided electrode (4) and the modulation electrode (5), respectively. Insulating substrates SKI and S with
OZ and each electron beam transmission hole h)+1 and hH'1
Pairs of conductive layers (6al) (6bl) and (6az) (6bz) respectively extend on both sides corresponding to
is formed by adhesion.

これら変調電極(5)及び水平偏向電極(6)の各絶縁
基板SN 、3M+、  Sol□は、例えば感光性ガ
ラスいわゆるフォトセラムによって形成され光学的に、
すなわち露光、現像処理によって各電子ビーム透過孔h
s 、  hNt、  hH□が穿設され、その所定部
に無電解メツキ及び電気メツキによる例えばNi等のメ
ツキ層によって各導電層(5a) 、 (6a+)、 
(6az) 。
The insulating substrates SN, 3M+, and Sol□ of these modulation electrodes (5) and horizontal deflection electrodes (6) are formed of, for example, photosensitive glass, so-called photoceram, and are optically
That is, each electron beam transmission hole h is formed by exposure and development processing.
s, hNt, hH□ are drilled, and each conductive layer (5a), (6a+),
(6az).

(6b+) 、 (6bz)を形成する。(6b+) and (6bz) are formed.

さらにこの電極構体(7)において必要に応じて第5図
の拡大断面図に示されるように例えば水平偏向電極(6
)と螢光面(2)との間にシールド電極(12)を配置
することができる。シールド電極(I2)は複数枚例え
ば4枚の金属電極板(12A)〜(120)によって構
成され、それぞれ電子ビーム選択孔hH1に対応して電
子ビーム透過孔h!^〜hstlが穿設されて成る。
Further, in this electrode structure (7), if necessary, for example, a horizontal deflection electrode (6
) and the fluorescent surface (2) can be arranged with a shield electrode (12). The shield electrode (I2) is composed of a plurality of metal electrode plates (12A) to (120), for example, four metal electrode plates, each having an electron beam transmission hole h! corresponding to the electron beam selection hole hH1. ^~hstl is drilled.

そして、この電極構体(7)を構成する互いに電気的に
分離すべき電極間、例えば、順次隣り合う分割電極(4
)、変調電極(5)、水平偏向電極(6)、シールド電
極(12)の各電極間、更にシールド電極(12)の各
電極(12A)〜(120)間に、それぞれガラスピー
ズ等の絶縁法(11)が介在される。更に電極構体(力
と前面パネル(IF)との間にも絶縁法(11)が介在
されて所要の間隔が保持されるようになされ、電極構体
(7)と背面パネル(IB)との間に所要の低い電気伝
導性を有する高抵抗支持壁(8)が、所要の複数のスリ
ットSLを組として、各紐間に、すなわち例えば10〜
20mmピッチPをもって前面パネル(IF)。
Then, between the electrodes that constitute this electrode structure (7) and should be electrically separated from each other, for example, the divided electrodes (4
), between the modulation electrode (5), the horizontal deflection electrode (6), and the shield electrode (12), and between each electrode (12A) to (120) of the shield electrode (12), using insulation such as glass beads. Law (11) is interposed. Furthermore, an insulation method (11) is interposed between the electrode structure (force) and the front panel (IF) to maintain the required distance, and between the electrode structure (7) and the back panel (IB). A high-resistance supporting wall (8) having a required low electrical conductivity is formed between each string by forming a set of a required plurality of slits SL, that is, for example, 10~
Front panel (IF) with 20mm pitch P.

背面パネル(IB)に垂直となるように、かつ垂直走査
方向に沿って植立させ、これら高抵抗支持壁(8)が電
極構体(7)と背面パネル(IB)との間に介在される
ことによって前面パネル(IF)と背面パネル(18)
とが大気圧等の外圧に対して高耐圧をもって所定の間隔
に保持されるようになされる。
These high-resistance support walls (8) are interposed between the electrode structure (7) and the back panel (IB), so as to be perpendicular to the back panel (IB) and along the vertical scanning direction. Front panel (IF) and rear panel (18)
and are maintained at a predetermined interval with high pressure resistance against external pressure such as atmospheric pressure.

高抵抗支持壁(8)は、少くとも全体が金属酸化物によ
る高い電気抵抗を有する例えばセラミック板より成るか
、絶縁基板の表面に高抵抗材が塗布された構成とする。
The high-resistance support wall (8) is made of, for example, a ceramic plate having high electrical resistance made of metal oxide, or has a high-resistance material coated on the surface of an insulating substrate.

螢光面(2)は例えば垂直方向に延びるストライプ状の
赤、緑及び青の螢光体トリプレットが、1本のビーム透
過孔り、。に対して数組設けられる。
The phosphor surface (2) has, for example, a vertically extending stripe-like triplet of red, green, and blue phosphors with one beam-transmitting aperture. Several sets are provided for each.

この構成において、電子銃(lO)のカソードKに対し
て、第1〜第3のグリッド電極G、−G3に、グリッド
電極G、に向って漸次高くなる所要の正の直流電圧を印
加する。そして、例えば第3グリノド電極と、分割電極
(4)と、垂直偏向電極(3)の−部の平行電極(3a
)に例えば100Vを印加する。この場合、垂直偏向電
極の平行電極(3a)には所定の垂直走査位置に対応し
て隣り合う電極(3a、)及び(3a=)間に、電極(
3a+)より電子銃(10)側に位置する全ての電極(
3a)においては例えば分割電極(4)と同電位の電圧
100Vを与え、これとは反対側の電極(3a z )
から電子銃(10)とは反対側の全ての電極には0■を
印加し、順次垂直走査速度及び周期に同期してその電圧
差を与える位置を順次垂直走査方向に移動させる。この
ようにすると電位差100■が与えられる電極(3a1
)及び(3az)近傍で第8図に細線a l+ a 2
+ a y・・・・で等電位線を示す電界によってビー
ムbが偏向して分割電極(4)の水平走査方向に延びる
各スリン1−3Lにその位置が垂直走査されつつ導入さ
れ、各スリン)SLによって、電子銃(10)からのビ
ームbによる1条のビームスポットがスリットSLの数
に応じて複数個に分割される。
In this configuration, a required positive DC voltage that gradually increases toward the grid electrode G is applied to the first to third grid electrodes G, -G3 with respect to the cathode K of the electron gun (lO). For example, the third grid electrode, the divided electrode (4), and the parallel electrode (3a) at the negative part of the vertical deflection electrode (3).
For example, 100V is applied to ). In this case, the parallel electrode (3a) of the vertical deflection electrode has an electrode (3a) between adjacent electrodes (3a,) and (3a=) corresponding to a predetermined vertical scanning position.
All electrodes (3a+) located closer to the electron gun (10)
In 3a), for example, a voltage of 100 V, which has the same potential as the divided electrode (4), is applied, and the electrode on the opposite side (3a z )
From then on, a voltage of 0 is applied to all electrodes on the opposite side of the electron gun (10), and the position where the voltage difference is applied is sequentially moved in the vertical scanning direction in synchronization with the vertical scanning speed and period. In this way, the electrode (3a1
) and (3az), there are thin lines a l+ a 2 in Figure 8 near
The beam b is deflected by an electric field indicating an equipotential line at + a y ... and introduced into each sulin 1-3L extending in the horizontal scanning direction of the divided electrode (4) while its position is vertically scanned. ) SL divides a single beam spot of beam b from the electron gun (10) into a plurality of beam spots according to the number of slits SL.

変調電極(5)には例えば200■の固定電圧を印加し
て各分割ビームを集束させる作用をなさしめると共に、
各電子ビーム透過孔り、の周縁にそれぞれ配置された電
極導電JW(5a)に表示信号に応じた例えばパルス幅
変調電圧が印加される。
A fixed voltage of, for example, 200 cm is applied to the modulation electrode (5) to focus each divided beam, and
For example, a pulse width modulated voltage corresponding to a display signal is applied to the conductive electrodes JW (5a) arranged around the periphery of each electron beam transmission hole.

水平偏向電極(6)は水平走査に同期して順次各電子ビ
ーム透過孔に対応して設けられた螢光面領域例えば赤、
緑及び青の複数組のトリップレットに対する変調を順次
行うように例えば300Vに対して±100Vの偏向電
圧を各ビーム透過孔に対して設けられた対の偏向電極導
電層(6a+) (6b+)と(6az)(6bz)と
の間に印加して、微小の水平偏向を行って分割電極(4
)のスリットS Lによって分割された各分割ビームに
関してそれぞれ水平偏向を行う。
The horizontal deflection electrode (6) is arranged in synchronization with the horizontal scanning to sequentially form fluorescent surface areas corresponding to each electron beam transmission hole, e.g.
For example, a deflection voltage of ±100V to 300V is applied to a pair of deflection electrode conductive layers (6a+) (6b+) provided for each beam transmission hole so as to sequentially modulate multiple sets of green and blue triplets. (6az) (6bz), performs minute horizontal deflection, and divides the divided electrode (4
) horizontal deflection is performed on each of the divided beams divided by the slits SL.

螢光面(2)には、高圧の例えば10k Vが印加され
、シールド電極(12)の各電極板(12A)〜(12
D)には、順次螢光面(2)側の電極板に向って高電圧
となる例えば2kV、4kV、6kV、8kVを印加し
て、水平偏向電極(6)及び変調電極(5)への高圧の
入り込みをシールドする。
A high voltage of, for example, 10 kV is applied to the fluorescent surface (2), and each electrode plate (12A) to (12
In D), high voltages such as 2 kV, 4 kV, 6 kV, and 8 kV are sequentially applied to the electrode plate on the fluorescent surface (2) side, and the voltage is applied to the horizontal deflection electrode (6) and the modulation electrode (5). Shields high pressure from entering.

なお上述したように本発明においては、1零の層流ビー
ムbによって螢光面(2)上の全域の螢光面の励起を行
わしめるものであるが、その電子ビームの密度がすなわ
ちアノード電流が十分得られない場合には、例えば水平
変調電極(6)と変調電極(5)との間に2次電子増倍
手段を配置することができる。
As mentioned above, in the present invention, the phosphor surface is excited over the entire region on the phosphor surface (2) by the laminar flow beam b of 1/0, but the density of the electron beam is determined by the anode current. If this is not possible, for example, a secondary electron multiplier can be placed between the horizontal modulation electrode (6) and the modulation electrode (5).

この2次電子倍増手段(22)は、例えば第9図にその
断面図を示すようにそれぞれ例えば複数の電極板(22
A) (22B) (22C)が設けられ、これら電極
板(22A) (22B) (22C)に、スリットS
Lに対応する各電子ビーム透過孔(hsA) 、(hs
g) 、 (hsc)が穿設され、その内面にMg等の
電子の衝撃によって2次電子を多量に発生する、すなわ
ち2次電子放出比が筒い物質を塗布することによってこ
の透過孔(hsA)(hsIl)に導かれる電子を2次
電子増倍して螢光面(2)に向わしめるようにすること
ができる。この場合において各2次電子増倍電極板(2
2A) 、 (22B) 。
This secondary electron doubling means (22) includes, for example, a plurality of electrode plates (22), as shown in a cross-sectional view in FIG.
A) (22B) (22C) are provided, and these electrode plates (22A) (22B) (22C) are provided with slits S.
Each electron beam transmission hole (hsA) corresponding to L, (hs
g) , (hsc) are drilled, and this transmission hole (hsA ) (hsIl) can be secondary electron multiplied and directed toward the fluorescent surface (2). In this case, each secondary electron multiplier electrode plate (2
2A), (22B).

(22C)には順次螢光面(2)に近い方に向って高い
電圧を印加するようになすことが望ましい。また各電極
板間には同様にガラスピース等の絶縁法(11)を配置
することができる。
It is desirable to apply a higher voltage to (22C) sequentially toward the fluorescent surface (2). Further, an insulation method (11) such as a glass piece can be similarly arranged between each electrode plate.

また、上述した例に限らず、水平偏向電極(6)を例え
ば第10図にその断面図を示すように、互いに電気的に
独立する3枚の電極部(6八)〜(6C)を形成し、そ
の電子ビーム透過孔h HA−h l(cの位置関係を
透過孔hHAを中心に左右に偏心させ、電極部(6B)
に対する水平偏向電圧の印加によって分割ビームb、を
左右に高解像度をもって微小偏向させる態様を採ること
もできる。
In addition, the horizontal deflection electrode (6) is not limited to the above-mentioned example. For example, as shown in the cross-sectional view of FIG. Then, the positional relationship of the electron beam transmission aperture h HA - h l (c is eccentric to the left and right around the transmission hole hHA, and the electrode part (6B)
It is also possible to adopt a mode in which the split beam b is minutely deflected left and right with high resolution by applying a horizontal deflection voltage to the split beam b.

〔発明の効果〕〔Effect of the invention〕

本発明による平面型表示装置においては、断面が帯状な
いしは線状の1本の電子ビームbを用いることから、画
面の各部を複数のカソードからのビームによって分担さ
せる場合に比し明るさのむらが回避される。
In the flat display device according to the present invention, since a single electron beam b having a band-like or linear cross section is used, unevenness in brightness is avoided compared to the case where each part of the screen is shared by beams from multiple cathodes. be done.

さらにまた両前面パネル(IF)及び背面パネル(IB
)間には電極構体(7)と背面パネル(IB)との間に
その板面方向が垂直走査方向に延びるように配置された
高抵抗支持壁(8)によって支持されるものであるので
、電子銃(10)からの螢光面(2)に向う電子ビーム
bの通路の妨げとなることが回避され、しかもその支持
壁(8)が高抵抗支持壁によって構成されていることに
よって、この支持壁(8)が接触する電極構体(7)と
垂直偏向電極(3)との間の電位差が支持壁(8)の高
さh方向に亘って漸次均等に変化する電位分布となるこ
とによって電界の乱れが回避され、この支持壁の存在に
よる電子ビームの乱れが回避される。
Furthermore, both front panels (IF) and back panels (IB)
) is supported by a high-resistance support wall (8) arranged between the electrode structure (7) and the back panel (IB) so that the plate surface direction extends in the vertical scanning direction. Obstruction of the path of the electron beam b from the electron gun (10) toward the fluorescent surface (2) is avoided, and since the support wall (8) is constituted by a high-resistance support wall, this The potential difference between the electrode structure (7) and the vertical deflection electrode (3) with which the support wall (8) is in contact becomes a potential distribution that gradually and uniformly changes over the height h direction of the support wall (8). Disturbances of the electric field are avoided and disturbances of the electron beam due to the presence of this support wall are avoided.

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

第1図は本発明による平面型表示装置の一例の正面図、
第2図はその上面図、第3図はその垂直走査方向の路線
的断面図、第4図は正面から見た各電極のパターン図、
第5図は電極構体の一例を示す要部の路線的断面図、第
6図は電子銃の一例の電位分布図、第7図は電極構体の
要部の分解斜視図、第8図は電子ビームの偏向状態の電
位分布図、第9図は2次電子増倍手段の一例の路線的断
面図、第10図及び第11図は水平偏向電極の他の例の
電極構成図及び電子ビーム透過孔の配置関係を示す図で
ある。 (1)は平面型管体、(IF)及び(IB)はその前面
パネル及び背面パネル、(2)は螢光面、(3)は垂直
偏向電極、(4)は分割電極、(5)は変調電極、(6
)は水平偏向電極、(力は電極構体、(8)は高抵抗支
持壁、(10)は電子銃である。 代 理 人 松 隈 秀 盛 箪 図 第100 4立l関イ糸乞示11幻 第11図 手続ネii正書 平成 2年 6月 21日 1、事件の表示 平成 2.5a明の名称 1年 3、補正をする者 事件との関係 特 許 願 第331593号 平面型表示装置
FIG. 1 is a front view of an example of a flat display device according to the present invention;
FIG. 2 is a top view, FIG. 3 is a cross-sectional view in the vertical scanning direction, and FIG. 4 is a pattern diagram of each electrode seen from the front.
Figure 5 is a cross-sectional view of the main parts of an example of the electrode assembly, Figure 6 is a potential distribution diagram of an example of the electron gun, Figure 7 is an exploded perspective view of the main parts of the electrode assembly, and Figure 8 is the electron gun. A potential distribution diagram of the beam deflection state, FIG. 9 is a cross-sectional view of an example of a secondary electron multiplier, and FIGS. 10 and 11 are electrode configuration diagrams of other examples of horizontal deflection electrodes and electron beam transmission. It is a figure showing the arrangement relationship of holes. (1) is a flat tube body, (IF) and (IB) are its front and back panels, (2) is a fluorescent surface, (3) is a vertical deflection electrode, (4) is a divided electrode, (5) is the modulation electrode, (6
) is the horizontal deflection electrode, (force is the electrode structure, (8) is the high resistance support wall, and (10) is the electron gun. Figure Procedure Nei ii Official Book June 21, 1990 1, Display of the case Heisei 2.5a Ming name 1 year 3, Person making the amendment Related to the case Patent Application No. 331593 Flat display device

Claims (1)

【特許請求の範囲】 平面型管体の前面パネルの内面に螢光面が配置され、 該螢光面との対向部より垂直走査方向にずれた位置に電
子銃が配置され、 上記平面型管体の上記前面パネルと対向する背面パネル
の内面の上記螢光面との対向部に水平走査方向に沿って
延長する複数の平行電極よりなる垂直偏向電極が配置さ
れ、 該垂直偏向電極と上記螢光面との間の空間に、上記電子
銃からの電子ビームを複数のビームに分割する分割電極
と、変調電極と、水平方向電極とを少なくとも有する電
極構体が配置され、 該電極構体と上記背面パネルとの間に上記電極構体を上
記前面パネルに向って押圧して上記前面パネルと背面パ
ネルとの空間を支持する高抵抗支持壁とその板面が垂直
走査方向に沿いかつ上記両パネルと直交するように介在
させてなり、 上記電子銃からの電子ビームは、そのほぼ上記両パネル
と直交し、かつ水平走査方向に沿うビーム断面がほぼ帯
状ないしは線状をもって、上記電極構体と上記垂直偏向
電極との間に導入されるようになされた 平面型表示装置。
[Claims] A fluorescent surface is arranged on the inner surface of the front panel of the flat tube body, and an electron gun is arranged at a position offset in the vertical scanning direction from the part facing the fluorescent surface, A vertical deflection electrode consisting of a plurality of parallel electrodes extending along the horizontal scanning direction is disposed on a portion of the inner surface of the back panel facing the front panel of the body facing the fluorescent surface, and the vertical deflection electrode and the fluorescent light An electrode structure having at least a dividing electrode for dividing the electron beam from the electron gun into a plurality of beams, a modulation electrode, and a horizontal electrode is disposed in a space between the light surface and the electrode structure and the back surface. A high-resistance support wall that supports the space between the front panel and the back panel by pressing the electrode structure toward the front panel between the panel and the panel, and the plate surface thereof is along the vertical scanning direction and perpendicular to both the panels. The electron beam from the electron gun is substantially orthogonal to the two panels, and has a beam cross section along the horizontal scanning direction that is substantially strip-like or linear, and the electron beam is interposed between the electrode structure and the vertical deflection electrode. A flat display device designed to be introduced between
JP33159389A 1989-12-21 1989-12-21 Flat panel display Expired - Fee Related JP2890571B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP33159389A JP2890571B2 (en) 1989-12-21 1989-12-21 Flat panel display
US07/631,148 US5220240A (en) 1989-12-21 1990-12-20 Planar display apparatus
EP90124940A EP0434054B1 (en) 1989-12-21 1990-12-20 Planar display apparatus
DE69021523T DE69021523T2 (en) 1989-12-21 1990-12-20 Flat image display device.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33159389A JP2890571B2 (en) 1989-12-21 1989-12-21 Flat panel display

Publications (2)

Publication Number Publication Date
JPH03192637A true JPH03192637A (en) 1991-08-22
JP2890571B2 JP2890571B2 (en) 1999-05-17

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