JPS6325459B2 - - Google Patents
Info
- Publication number
- JPS6325459B2 JPS6325459B2 JP4470179A JP4470179A JPS6325459B2 JP S6325459 B2 JPS6325459 B2 JP S6325459B2 JP 4470179 A JP4470179 A JP 4470179A JP 4470179 A JP4470179 A JP 4470179A JP S6325459 B2 JPS6325459 B2 JP S6325459B2
- Authority
- JP
- Japan
- Prior art keywords
- deflection
- electrode
- electron beam
- electrodes
- display device
- 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 40
- 239000000758 substrate Substances 0.000 claims description 21
- 238000000605 extraction Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/74—Deflecting by electric fields only
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
【発明の詳細な説明】
本発明は電子ビームを利用する平板形の画像表
示装置に関し、電子ビームの偏向操作を容易に
し、かつ高解像度を維持することのできる偏向電
極の構成を提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flat image display device that uses electron beams, and provides a deflection electrode configuration that facilitates electron beam deflection operation and maintains high resolution. be.
従来、平板状電子源から電子ビームを取り出し
XYマトリツクス電極によつて電子ビームを制御
し、加速して螢光体に衝突させ、文字，画像表示
を行なう平板形表示装置に関する文献は多く発表
されている。本発明者らは特開昭55−69944号お
よび特開昭55−72347号において、線状熱陰極か
ら板状の電子ビームを取り出しこれを水平および
垂直に偏向すると共に、画像信号に応じて電子ビ
ームを変調し、加速して螢光体に衝突させて画像
表示を行なう表示装置に関する技術を提案した。
前記特許出願の要部構成図を第１図に示す。１は
背面電極であつて、電子ビームの集束作用を有す
る。２は線状熱陰極である。３は絶縁性基板であ
つて、その両側主面には偏向電極４ａおよび４ｂ
が形成されている。５は電子ビームを引き出すた
めの電極であつて、複数個の貫通孔６が設けられ
ている。 Conventionally, an electron beam is extracted from a flat electron source.
Many documents have been published regarding flat panel display devices in which characters and images are displayed by controlling electron beams using XY matrix electrodes, accelerating them, and causing them to collide with phosphors. In JP-A-55-69944 and JP-A-55-72347, the present inventors took out a plate-shaped electron beam from a linear hot cathode and deflected it horizontally and vertically. We proposed a technology for a display device that modulates a beam, accelerates it, and causes it to collide with a phosphor to display an image.
FIG. 1 shows a diagram of the main parts of the patent application. Reference numeral 1 denotes a back electrode, which has an electron beam focusing function. 2 is a linear hot cathode. 3 is an insulating substrate, and deflection electrodes 4a and 4b are provided on both main surfaces thereof.
is formed. Reference numeral 5 denotes an electrode for extracting an electron beam, and a plurality of through holes 6 are provided.
上記４つの電極（背面電極１、線状熱陰極２、
偏向電極４ａ，４ｂ、引出し電極５）によつて電
子源が構成される。７は短冊状の電極であつて、
引出し電極５に設けた貫通孔６と同軸に貫通孔８
が設けてある。そして７は電子ビーム制御電極で
あつて、個々の制御電極は各々絶縁されており
個々に画像信号電圧が印加される。９は絶縁性基
板であつて、その両側主面に第２の偏向電極１０
ａ，１０ｂおよび加速電極１１が設けられてい
る。１２はガラス基板であつて、その表面に電子
ビーム照射により画像表示のなされる螢光体層１
３およびアルミ薄膜等からなるメタルバツク層１
４が形成されていて表示面を構成している。ガラ
ス基板１２は一般に真空容器の一部が利用され
る。メタルバツク層１４は電極１１と共に加速電
極となる。 The above four electrodes (back electrode 1, linear hot cathode 2,
The deflection electrodes 4a, 4b and the extraction electrode 5) constitute an electron source. 7 is a strip-shaped electrode,
A through hole 8 is provided coaxially with the through hole 6 provided in the extraction electrode 5.
is provided. Reference numeral 7 denotes an electron beam control electrode, each of which is insulated and to which an image signal voltage is individually applied. 9 is an insulating substrate, and second deflection electrodes 10 are provided on both main surfaces thereof.
a, 10b and an accelerating electrode 11 are provided. Reference numeral 12 is a glass substrate, on the surface of which is a phosphor layer 1 on which an image is displayed by irradiation with an electron beam.
3 and a metal back layer 1 made of aluminum thin film, etc.
4 is formed to constitute a display surface. The glass substrate 12 is generally a part of a vacuum container. The metal back layer 14 serves as an accelerating electrode together with the electrode 11.
上記表示装置においては、第１の偏向電極対４
ａ，４ｂに例えば垂直偏向電圧が、また第２の偏
向電極対１０ａ，１０ｂに例えば水平偏向電圧が
印加され、電子ビームは各々垂直および水平方向
に偏向され、加速されて螢光体１３に衝突され文
字または画像が表示される。例えばテレビ画像の
如く表示面に連続した画像を表示する場合は垂
直，水平共に隣接する表示領域が相互に連続する
ように電子ビームを垂直，水平に偏向する必要が
ある。然るに、上記画像表示装置の陰極部分にお
いては第１の偏向電極４ａ，４ｂよりも高い電位
が引き出し電極５に印加され、また表示部分では
同様に、第２の偏向電極１０ａ，１０ｂより高い
加速電圧が加速電極１１および１４に印加される
ため、その電力線分布２１の中央方向への成分に
より第２図に示す如く偏向された電子ビーム２０
をたとえば絶縁基板９，９間すなわち偏向電極１
０ａ，１０ｂ間の中央部に引きもどそうとする力
が作用し、電子ビーム２０を画面の必要な位置ま
で偏向することが困難であり、電子ビームの照射
される表示面が狭くなり、さらに電子ビームの径
および形状が偏向巾につれて変化し、十分な解像
度が得られない欠点があつた。このことは第１の
偏向電極板付近でも問題となる。また、第２図で
は、基板９の厚さ分は完全に表示面が消失する不
都合も存在した。 In the above display device, the first deflection electrode pair 4
For example, a vertical deflection voltage is applied to a and 4b, and a horizontal deflection voltage, for example, is applied to the second pair of deflection electrodes 10a and 10b, and the electron beam is deflected in the vertical and horizontal directions, accelerated, and impinges on the phosphor 13. text or images are displayed. For example, when displaying continuous images on a display screen, such as television images, it is necessary to deflect the electron beam vertically and horizontally so that vertically and horizontally adjacent display areas are continuous with each other. However, in the cathode portion of the image display device, a higher potential is applied to the extraction electrode 5 than the first deflection electrodes 4a, 4b, and similarly, in the display portion, an accelerating voltage higher than the second deflection electrodes 10a, 10b is applied. is applied to the accelerating electrodes 11 and 14, the electron beam 20 is deflected as shown in FIG. 2 by the central component of the power line distribution 21.
For example, between the insulating substrates 9, 9, that is, the deflection electrode 1
A pulling force acts on the center between 0a and 10b, making it difficult to deflect the electron beam 20 to the required position on the screen, narrowing the display surface irradiated with the electron beam, and further reducing the electron beam 20. The diameter and shape of the beam changed with the deflection width, which had the disadvantage that sufficient resolution could not be obtained. This also becomes a problem near the first deflection electrode plate. In addition, in FIG. 2, there is also the disadvantage that the display surface completely disappears by the thickness of the substrate 9.
本発明は上記の問題点の検討に鑑み、第１の偏
向電極板又は第２の偏向電極板の表示面方向での
端部の相互間隔を、第１，第２の偏向電極の線状
熱陰極側端部の間隔よりも大きくして電気力線の
中央方向への成分を弱くし、偏向された電子ビー
ムを偏向電極板間の中央に引きもどそうとする加
速電界の作用を小さくし、偏向範囲が広く表示面
全体を有効に用いる構成とし、高解像度でかつ偏
向を容易にした画像表示装置を提供するものであ
る。 In view of the above-mentioned problems, the present invention has been developed by adjusting the distance between the end portions of the first deflection electrode plate or the second deflection electrode plate in the direction of the display surface by using linear heat treatment of the first and second deflection electrodes. By making the gap larger than the gap between the cathode side edges, the component of the electric lines of force towards the center is weakened, and the effect of the accelerating electric field that tries to return the deflected electron beam to the center between the deflection electrode plates is reduced. An object of the present invention is to provide an image display device that has a wide deflection range, effectively uses the entire display surface, has high resolution, and facilitates deflection.
第３図に本発明の一実施例の画像表示装置にお
ける第２の偏向部の構成を示し、第３図は表示部
分の電極構成を示している。２４は楔形の絶縁性
基板であつて、第１図に示す絶縁性基板９に相当
する。この楔形絶縁基板２４の表面には第２の偏
向電極１０ａ，１０ｂおよび加速電極１１が設け
られている。偏向電極１０ａ，１０ｂおよび加速
電極１１は真空蒸着法、印写焼付法などによつて
形成することができる。１２は透明ガラス板であ
つて、その表面に螢光体膜１３が、更にその表面
にアルミ薄膜等のメタルバツク層１４が設けられ
ている。メタルバツク層１４および電極１１は共
に加速電極であつて５〜10KV程度の加速電圧が
印加される。 FIG. 3 shows the configuration of the second deflection section in an image display device according to an embodiment of the present invention, and FIG. 3 shows the electrode configuration of the display section. 24 is a wedge-shaped insulating substrate, which corresponds to the insulating substrate 9 shown in FIG. On the surface of this wedge-shaped insulating substrate 24, second deflection electrodes 10a, 10b and an acceleration electrode 11 are provided. The deflection electrodes 10a, 10b and the acceleration electrode 11 can be formed by a vacuum deposition method, an impression printing method, or the like. Reference numeral 12 is a transparent glass plate, on the surface of which a phosphor film 13 is provided, and further on the surface thereof a metal back layer 14 such as a thin aluminum film. Both the metal back layer 14 and the electrode 11 are accelerating electrodes, and an accelerating voltage of about 5 to 10 KV is applied thereto.
第３図には表示部分の電極構成を示すと同時
に、偏向、加速空間に発生する電気力線２３の分
布および電子ビームの軌道２２を示している。第
３図に示す電極構成においては第２図に示す平行
平板で構成した場合に比較して電極１０ａ，１０
ｂ間の間隔、１１間の間隔が螢光体１３に近ずく
にしたがつて広くなつており、第２図に比べ電気
力線２３の中央方向成分が弱くなり、電子ビーム
を中央に引きもどそうとする電界の作用が弱く電
子ビームを表示領域全体に広く偏向することが容
易となる。すなわち、電極１０ａ，１０ｂ，１１
がハの字形配設であり、電気力線分布の電子ビー
ム偏向に及ぼす悪影響を少なくできる。 FIG. 3 shows the electrode structure of the display section, and at the same time shows the distribution of electric lines of force 23 generated in the deflection and acceleration space and the trajectory 22 of the electron beam. In the electrode configuration shown in FIG. 3, the electrodes 10a, 10
The distances between b and 11 become wider as they get closer to the phosphor 13, and the central component of the electric lines of force 23 becomes weaker compared to FIG. 2, and the electron beam is returned to the center. The effect of the electric field is weak and it becomes easy to deflect the electron beam widely over the entire display area. That is, the electrodes 10a, 10b, 11
is arranged in a V-shape, which can reduce the adverse effect of the distribution of electric lines of force on the electron beam deflection.
更に、第３図に示す電極構成においては、電子
ビームの入射口において、偏向電極１０ａ，１０
ｂ間隔が表示面における基板２４の端部の間隔よ
りも小さく、かつ加速電界の偏向領域における影
響が少ないため、低い偏向電圧で容易に偏向でき
る長所がある。また、低い偏向電圧によつて表示
領域全体に電子ビームを偏向し得る結果、電子ビ
ーム径の増大、変形が殆んどなく、高解像度の表
示を得ることができる。そして、第３図では基板
２４の表示の端部は巾が狭いため、表示面の消失
部が第２図に比べ極めて小さく、実際の表示部を
大きくできる。 Furthermore, in the electrode configuration shown in FIG. 3, the deflection electrodes 10a, 10
Since the distance b is smaller than the distance between the edges of the substrate 24 on the display surface and the accelerating electric field has less influence on the deflection region, it has the advantage that deflection can be easily performed with a low deflection voltage. Further, since the electron beam can be deflected over the entire display area with a low deflection voltage, there is almost no increase or deformation of the electron beam diameter, and a high-resolution display can be obtained. In FIG. 3, since the width of the display end of the substrate 24 is narrow, the disappearing portion of the display surface is much smaller than that in FIG. 2, and the actual display portion can be made larger.
本発明の技術思想は第３図に示す楔形形状のみ
に限定されるものではなく、第４図に示す如く、
偏向領域と加速領域の電極間隔を異にする構成、
第５図に示す如く、各電極を配置した平板絶縁基
板を組合せて上記機能を保持する電極構成など、
必要に応じて設計し得るものである。すなわち、
第４図では偏向電極１０ａ，１０ｂを平行な構成
とし、基板２４の先端部を楔形とし、先端部の間
隔t2を偏向電極間隔t1よりも大きくしており、こ
の場合も電気力線分布２４の中央方向への成分が
第２図の場合よりも弱くなり、同等の効果が得ら
れる。また、表示面の拡大も同様に達成できる。
第５図の例は第３図と基本的に同一の構成であ
る。 The technical idea of the present invention is not limited to the wedge-shaped shape shown in FIG. 3, but as shown in FIG.
A configuration in which the electrode spacing in the deflection region and acceleration region is different,
As shown in FIG. 5, an electrode configuration that maintains the above functions by combining flat insulating substrates on which each electrode is arranged, etc.
It can be designed as needed. That is,
In FIG. 4, the deflection electrodes 10a and 10b are configured in parallel, the tip of the substrate 24 is wedge-shaped, and the spacing t 2 between the tips is larger than the deflection electrode spacing t 1. In this case as well, the electric force distribution is 24 toward the center becomes weaker than in the case of FIG. 2, and the same effect can be obtained. Furthermore, enlargement of the display surface can be similarly achieved.
The example shown in FIG. 5 has basically the same configuration as that shown in FIG. 3.
また、本発明技術によると、加速電極１１は必
ずしも必要でないことが実験結果明らかになつ
た。すなわち、例えば第４図において加速電極１
１がない場合であつても、電気力線分布の中央方
向への成分は第２図の場合よりも弱くなり、電子
ビームを中央に引きもどそうとする電界の作用は
弱くなる。 Further, according to the technology of the present invention, it has been revealed through experiments that the accelerating electrode 11 is not necessarily necessary. That is, for example, in FIG.
1, the component of the electric line of force distribution toward the center becomes weaker than in the case of FIG. 2, and the effect of the electric field that tries to return the electron beam to the center becomes weaker.
次に第６図に本発明技術を陰極部分、すなわち
電子ビームの引出し部分に実施した実施例を示
す。第６図は複数列平行に陰極を配置した表示用
陰極部分の断面の一部を示している。２は線状熱
陰極である。１は背面電極であつて、電極２５と
共に陰極部を構成し、紙面に垂直な板状の電子ビ
ームを発生する。絶縁性基板３０（第２図の絶縁
性基板３に相当する）に形成された偏向電極４
ａ，４ｂは前記板状電子ビームを紙面に対して左
右に偏向するための第１の偏向電極である。５は
電子ビームを引き出すための電極であつて貫通孔
６が設けられている。第６図に示す電極構成の場
合においても、第３，４，５図に示す電極構成の
場合と同様な原理により、板状電子ビームの巾を
変化させることなく電子ビームを左右に大きく偏
向し得ることができる。なお、第６図でも基板３
０は導電体を用いることができる。 Next, FIG. 6 shows an embodiment in which the technique of the present invention is applied to a cathode section, that is, an electron beam extraction section. FIG. 6 shows a part of a cross section of a display cathode portion in which cathodes are arranged in parallel in a plurality of rows. 2 is a linear hot cathode. Reference numeral 1 denotes a back electrode, which together with an electrode 25 constitutes a cathode section, and generates a plate-shaped electron beam perpendicular to the plane of the paper. Deflection electrode 4 formed on an insulating substrate 30 (corresponding to the insulating substrate 3 in FIG. 2)
Reference numerals a and 4b are first deflection electrodes for deflecting the plate-shaped electron beam to the left and right with respect to the paper surface. Reference numeral 5 denotes an electrode for extracting an electron beam, and a through hole 6 is provided therein. In the case of the electrode configuration shown in Fig. 6, the electron beam can be largely deflected to the left or right without changing the width of the plate-shaped electron beam, based on the same principle as in the case of the electrode configurations shown in Figs. 3, 4, and 5. Obtainable. In addition, in FIG. 6, the board 3
0 can use a conductor.
一実験結果について述べると、例えば、第１図
に示す電極構成においては、偏向電極間隔５mm、
背面電極と引出し電極間の間隔を６mmとした場
合、電子ビームの偏向巾（電子ビームの形状が大
きく変化しない場合）は最大±1.5mmである。一
方、第６図に示す構成とした場合、同図において
上部の電極間隔を２mm、下部の電極間隔を５mm、
背面電極１を引出し電極５間を６mmとした場合、
電子ビームの偏向巾は最大±2.2mmに達した。 Regarding one experimental result, for example, in the electrode configuration shown in Fig. 1, the deflection electrode spacing was 5 mm,
When the distance between the back electrode and the extraction electrode is 6 mm, the deflection width of the electron beam (if the shape of the electron beam does not change significantly) is at most ±1.5 mm. On the other hand, in the case of the configuration shown in Fig. 6, the upper electrode interval is 2 mm, the lower electrode interval is 5 mm,
When the back electrode 1 is pulled out and the distance between the electrodes 5 is 6 mm,
The deflection width of the electron beam reached a maximum of ±2.2mm.
以上、詳細に説明した如く、本発明に開示した
電極構成を陰極部又は表示部に適用すれば、低い
偏向電圧で電子ビームを偏向できるだけでなく、
電子ビームの集束性を失うことなく、かつ偏向巾
を大きくすることができ、かつ有効表示面も大き
くでき、文字表示のみならず、画面上で連続した
画像を得る必要がある例えばTV画像表示装置等
に応用する場合特に有用である。 As described above in detail, if the electrode configuration disclosed in the present invention is applied to the cathode section or the display section, it is possible not only to deflect the electron beam with a low deflection voltage, but also to
For example, TV image display devices that can increase the deflection width without losing the focusing ability of the electron beam, and can also increase the effective display area, and can display not only characters but also continuous images on the screen. It is particularly useful when applied to, etc.
第１図は本発明の技術が適用される表示装置の
要部概略構成図、第２図は第１図の装置における
従来の電極構成と電気力線の分布および電子ビー
ムの軌道を示す断面構成図、第３図，４図，５図
はそれぞれ本発明の実施例の電極構成における電
気力線の分布と電子ビームの軌道を示す断面構成
図、第６図は本発明の電極構成を陰極部分に実施
した実施例の断面構成図である。
１……背面電極、２……線状熱陰極、４ａ，４
ｂ……偏向電極、５……引出し電極、６……貫通
孔、１０ａ，１０ｂ……偏向電極、１３……螢光
体層、２４，３０……絶縁性基板。
FIG. 1 is a schematic diagram of the main parts of a display device to which the technology of the present invention is applied, and FIG. 2 is a cross-sectional configuration showing the conventional electrode configuration, distribution of electric lines of force, and trajectory of an electron beam in the device of FIG. Figures 3, 4, and 5 are cross-sectional configuration diagrams showing the distribution of electric lines of force and the trajectory of the electron beam in the electrode configuration of the embodiment of the present invention, respectively, and Figure 6 shows the cathode portion of the electrode configuration of the present invention. FIG. 2 is a cross-sectional configuration diagram of an example implemented in FIG. 1... Back electrode, 2... Line hot cathode, 4a, 4
b... Deflection electrode, 5... Extraction electrode, 6... Through hole, 10a, 10b... Deflection electrode, 13... Fluorescent layer, 24, 30... Insulating substrate.
Claims (1)
する第１の偏向電極を有する複数の第１の偏向電
極基板と、前記第１の偏向電極により偏向された
電子ビームの選択的通過を制御する電子ビーム制
御電極系と、前記電子ビーム制御電極系により制
御された電子ビームを偏向する複数の第２の偏向
電極を有する第２の偏向電極基板とを備えた平板
状の画像表示装置において、前記第１または第２
の偏向電極基板の表示面方向の端部の相互間隔
を、前記第１または第２の偏向電極の線状熱陰極
側端部の相互間隔よりも大きくしてなることを特
徴とする画像表示装置。 ２ 偏向電極を有する第１および第２の偏向電極
基板の少なくとも一方の偏向電極基板の断面が楔
形を形成することを特徴とする特許請求の範囲第
１項に記載の画像表示装置。 ３ 第１または第２の偏向電極がハの字形に配設
されてなることを特徴とする特許請求の範囲第１
項に記載の画像表示装置。[Claims] 1. A plurality of first deflection electrode substrates each having a first deflection electrode that deflects an electron beam emitted from a linear hot cathode; A flat plate-shaped substrate comprising an electron beam control electrode system for controlling selective passage, and a second deflection electrode substrate having a plurality of second deflection electrodes for deflecting the electron beam controlled by the electron beam control electrode system. In the image display device, the first or second
An image display device characterized in that the distance between the ends of the deflection electrode substrate in the display surface direction is larger than the distance between the ends of the linear hot cathode side of the first or second deflection electrode. . 2. The image display device according to claim 1, wherein at least one of the first and second deflection electrode substrates having deflection electrodes has a wedge-shaped cross section. 3. Claim 1, characterized in that the first or second deflection electrodes are arranged in a V-shape.
The image display device described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4470179A JPS55136443A (en) | 1979-04-11 | 1979-04-11 | Image displayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4470179A JPS55136443A (en) | 1979-04-11 | 1979-04-11 | Image displayer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55136443A JPS55136443A (en) | 1980-10-24 |
| JPS6325459B2 true JPS6325459B2 (en) | 1988-05-25 |
Family
ID=12698713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4470179A Granted JPS55136443A (en) | 1979-04-11 | 1979-04-11 | Image displayer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55136443A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58104174U (en) * | 1981-12-31 | 1983-07-15 | 衣目 元勇 | Loofah-sama washing utensils |
| JPS58121534A (en) * | 1982-01-14 | 1983-07-19 | Matsushita Electric Ind Co Ltd | Picture display device |
| JPH0619951B2 (en) * | 1983-12-20 | 1994-03-16 | 松下電器産業株式会社 | Flat panel display |
-
1979
- 1979-04-11 JP JP4470179A patent/JPS55136443A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55136443A (en) | 1980-10-24 |
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