JPS6251133A - Discharge-type light emitting device - Google Patents

Abstract

PURPOSE:To obtain a faceplate high in luminance and colorimetric purity, by disposing a group of electrodes in a striped manner on a base plate, providing a dielectric layer, and thereafter disposing three kinds of electrodes coated with fluorescent substances for three colors, so that the three kinds of electrodes constitute stripes. CONSTITUTION:Striped electrodes 2 are manufactured on a base plate 1 of glass or the like by etching or the like. A dielectric layer 4 shaped as a sheet or the like is provided on the electrodes 2. Wires 3-R, 3-G, 3-B of aluminum, copper or the like coated with fluorescent substances for three colors R, G, B are provided as electrodes 3 in a striped manner on the dielectric layer 4 across the electrodes 2. This assembly is put in a container in which a discharge gas is enclosed, so that a discharge-type light emitting device capable of color display with plasma is constituted. As a result, the electrodes 3 correspond to the fluorescent substances one by one to constitute a faceplate high in luminance and colorimetric purity.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明はプラズマを用いた表示装置に関し、特にカラー
表示可能な放電形発光装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display device using plasma, and particularly to a discharge type light emitting device capable of color display.

［開示の概要］ 本明細書及び図面は、プラズマを用いた放電形発光装置
において、基板りで互いに交差するように配置した第１
及び第２の電極群の、少なくとも交点において電極間に
誘電体層を設け、第１及び第２の電極群に蛍光体を被覆
することにより、明るく１色線度が高く、かつ大画面化
した場合で発光輝度の十分に高い発光装置とする技術を
開示するものである。[Summary of the Disclosure] The present specification and drawings describe a discharge type light emitting device using plasma, in which first lights are arranged so as to intersect with each other on a substrate.
By providing a dielectric layer between the electrodes at least at the intersection of the electrode group and the second electrode group, and coating the first and second electrode groups with a phosphor, it is possible to achieve brightness, high monochromatic linearity, and a large screen. The present invention discloses a technique for producing a light emitting device with sufficiently high luminance when the light is emitted.

［従来の技術］ 従来この種の発光装置としては、例えば特開昭４７−１
２号で開示されたものが知られている。この装置は、第
２図に示す様に、基板２１）−に複数配置された平板形
の第１の電極２２の上に、誘電体層２４を介して同じく
複数の平板形の第２電極２３を交差する様にマトリック
ス状に配置すると共に、基板全体に保護膜２７を形成し
、さらに基板２１の電極側に容器２５を設は放電ガス２
６を封入したものである。この装置は電源２８によって
両電極間に電圧をかけ放電発光させるいわゆる平面形プ
ラズマ表示装置と呼ばれるもので、電極間の間隔が誘電
体層２４によって規定されるため、大面積の均一な表示
装置を得るのに適したものであった。また、この様な平
面形プラズマ表示装置をカラー化する場合には、基板２
１と対向する容器２５の内側に蛍光体を塗布する方法が
一般的に用いられる。[Prior Art] Conventionally, as this type of light emitting device, for example, Japanese Patent Laid-Open No. 47-1
The one disclosed in No. 2 is known. As shown in FIG. 2, in this device, a plurality of flat second electrodes 23 are placed on a plurality of flat first electrodes 22 arranged on a substrate 21) via a dielectric layer 24. A protective film 27 is formed on the entire substrate, and a container 25 is provided on the electrode side of the substrate 21 to supply the discharge gas 2.
6 is enclosed. This device is a so-called flat plasma display device in which a voltage is applied between both electrodes by a power source 28 to emit light by discharge.Since the spacing between the electrodes is defined by the dielectric layer 24, a uniform display device with a large area can be realized. It was a good thing to get. In addition, when colorizing such a flat plasma display device, the substrate 2
Generally, a method is used in which a phosphor is applied to the inside of the container 25 facing the container 25.

［発明が解決しようとする問題点］ しかしながら、カラー表示で一般的に行なわれる様に、
Ｒ（赤）、Ｇ（緑）、Ｂ（青）の３種の蛍光体をストラ
イプ状に塗布するためには、フォトレジに蛍光体を分散
してガラス板に塗布し、フォトマスクを用いてパターニ
ングするという行程を３回繰り返す必要があり、こうし
た事を精度よく、大面積にわたって行う事は、実用上困
難であった。また、電極交点即ち放電位置と、蛍光体面
との間に距離があるために、紫外線の広がりにより光学
的クロストークが生じ、純度の高いカラー表示が得られ
ないという欠点もあった。[Problems to be solved by the invention] However, as is commonly done in color display,
In order to apply the three types of phosphors R (red), G (green), and B (blue) in stripes, the phosphors are dispersed in a photoresist, applied to a glass plate, and then applied using a photomask. It is necessary to repeat the patterning process three times, and it is practically difficult to perform this process accurately over a large area. Furthermore, since there is a distance between the electrode intersection point, that is, the discharge position, and the phosphor surface, optical crosstalk occurs due to the spread of ultraviolet rays, and a highly pure color display cannot be obtained.

本発明は従来例の欠点を除去し、明るく、かっ色純度の
高い大面積のカラー表示が容易に得られる放電形発光装
置を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a discharge type light-emitting device which eliminates the drawbacks of the conventional example and can easily provide a large-area color display with bright, brown color purity.

［問題点を解決するだめのｆ段］ 本発明の技術的り段を実施例に対応する第１図を用いて
説明する。第１図において、ガラス、アクリル、エポキ
シ、セラミックス等の基板１上に第１の電極群となるス
トライブ状の電極２を配置し、そのＬにポリイミド、５
ｉ０２笠の誘電体層４を形成する。この場合、ストライ
プ状の電極２は銅やアルミニウム層のエンチング等によ
り容易に形成することができ、誘電体層４はシート状の
誘電体を貼り合せるか、またはバーコーダ−等で塗布し
てもよい。また、フレキシブルプリント基板として知ら
れる、ポリイミド等のシート間に銅のストライプ電極を
挟持したプリント基板を、基板１］二に貼り合せてもよ
い。次に、この誘電体層４の上に、アルミニウム、金、
銅、タングステン、鉄淳の線材に、Ｒ，Ｇ、Ｈの３色に
対応する蛍光体を被覆した３種類の線材を、Ｒ，Ｇ、Ｈ
のストライブパターンとなる様に順次貼り合せ、第２の
電極群となる電極３を形成する。[F stage that does not solve the problem] The technical stage of the present invention will be explained using FIG. 1 corresponding to the embodiment. In FIG. 1, strip-shaped electrodes 2 forming a first electrode group are arranged on a substrate 1 made of glass, acrylic, epoxy, ceramics, etc.
A dielectric layer 4 of i02 shade is formed. In this case, the striped electrodes 2 can be easily formed by etching a copper or aluminum layer, and the dielectric layer 4 can be formed by laminating sheet-like dielectrics or by coating with a barcoder or the like. . Alternatively, a printed circuit board known as a flexible printed circuit board in which striped copper electrodes are sandwiched between sheets of polyimide or the like may be bonded to the substrate 1]. Next, on this dielectric layer 4, aluminum, gold,
Three types of wire rods made of copper, tungsten, and iron are coated with phosphors corresponding to the three colors of R, G, and H.
The electrodes 3 are bonded one after another so as to form a stripe pattern, thereby forming the electrodes 3 that will become the second electrode group.

なお、第１図においては、電極３の形状とじて断面が円
形のものを示したが、その断面形状は円形に限定される
ことはない。Although FIG. 1 shows the electrode 3 having a circular cross section, the cross-sectional shape is not limited to a circular shape.

［作　用］ Ｒ，Ｇ、Ｈの蛍光体を塗布した線材が、ストライブ状に
配置されているため、線材すなわち電極と蛍光体が一対
−で対応し、色ズレのない美しいカラー表示となる。[Function] Because the wire rods coated with R, G, and H phosphors are arranged in stripes, the wire rods, or electrodes, and the phosphors correspond as a pair, resulting in beautiful color display without color shift. .

また、線材を蛍光体で被覆した事により、放電による紫
外線や電子、イオンを従来例の様にガス空間中で減衰さ
せずに効率よく利用することができる。さらに、従来は
蛍光体が容器の内側に設けられ、観察面とは反対の面が
発光していたので、観察者は蛍光体を通過して減衰した
光を見なければならなかった。しかしながら、上記構成
によれば発光面を直視することになり、明るいカラー表
示を得ることができる。Furthermore, by coating the wire with a phosphor, it is possible to efficiently utilize ultraviolet rays, electrons, and ions caused by discharge without attenuating them in the gas space as in the conventional example. Furthermore, conventionally, a phosphor was provided inside the container and the surface opposite to the viewing surface emitted light, so the observer had to see the attenuated light passing through the phosphor. However, according to the above configuration, the light emitting surface is viewed directly, and a bright color display can be obtained.

［実施例］ 第１図は本発明の一実施例を示す基板の斜視図である。[Example] FIG. 1 is a perspective view of a substrate showing an embodiment of the present invention.

本実施例においては、基板１として８５判サイズ（１７
８Ｘ　２５２ｍｍ　）のガラス板を使用し、電極２とし
ては、ｌ／２０インチピッチで配置した銅電極群の上下
を、厚さ５０ｇｍのポリイミド２で挟んだプリント基板
を用い、基板ｌ上に貼り合せた。また、電極３としては
、ポリエステル被覆の北に、さらにＲ，Ｇ、Ｂの蛍光体
を塗布した直径１００ｇｍ（７）３種類の銅線３−Ｒ、
３−Ｇ　、　３−Ｂを、電極２と平面的に直交するよう
ｌ／１０インチピッチで巻きつけた。この時使用した蛍
光体は、化成オプトニクス社製の次に挙げる３種類であ
る。In this embodiment, the board 1 is 85 size (17
A glass plate (8 x 252 mm) was used, and as the electrode 2, a printed circuit board was used in which the upper and lower sides of a group of copper electrodes arranged at a pitch of 1/20 inch were sandwiched between polyimide 2 with a thickness of 50 gm, and the electrodes were bonded onto the board 1. Ta. In addition, as the electrode 3, three types of copper wire 3-R with a diameter of 100 g (7) coated with R, G, and B phosphors were added to the north of the polyester coating.
3-G and 3-B were wound at a pitch of 1/10 inch so as to be perpendicular to the electrode 2 in a plane. The phosphors used at this time were the following three types manufactured by Kasei Optonics.

Ｒ：、　（Ｙ、Ｃｄ）ＢＯ３：　　ＥｕＧ　：　Ｂａ０
・８Ａｊ）２０：＋：　　ＭｎＢ　：　ＢａＭｇＡ１’
ｚ０２３：　　Ｅｕ２１これらの蛍光体を、バインダー
用のユニチカ製Ｕポリマーと共にクロロホルム（ＣＣＲ
ａ　）中に分散させた溶液に、ポリエステル被覆の施さ
れた銅線を浸し、ポリエステル被ｍｈに蛍光体層を形成
した。さらに、この基板を第２図に示す様な容器に納め
、キセノンーヘリウ゛ム混合ガス（キセノン２％、他は
ヘリウム）を封入した。R:, (Y, Cd)BO3: EuG: Ba0
・8Aj) 20:+: MnB: BaMgA1'
z023: Eu21 These phosphors were mixed with chloroform (CCR) along with Unitika's U polymer as a binder.
a) A copper wire coated with polyester was immersed in the solution dispersed in the solution to form a phosphor layer on the polyester coated mh. Furthermore, this substrate was placed in a container as shown in FIG. 2, and a xenon-helium mixed gas (2% xenon, the rest was helium) was filled.

Ｌ記構成による装置の゛電極２と電極３との間にＩ　Ｍ
Ｈｚ　、　１００ＯＶ　（尖頭値）の交流電圧をよ印加
したところ、クロストークのない明るい赤、緑、青の３
色の発光を得た。この発光は交流電源の印加時間を１１
５００のデユーティ比でオンオフして１１５００の期間
のみ電圧を印加するようにしても十分な明るさであった
。In the device according to the configuration shown in L, there is an I M
When an AC voltage of 100 Hz and 100 OV (peak value) was applied, bright red, green, and blue colors with no crosstalk appeared.
Obtained colored luminescence. This light emission takes place for 11 hours when the AC power is applied.
Even when the voltage was turned on and off at a duty ratio of 500 and the voltage was applied only for a period of 11,500, the brightness was sufficient.

［発明の効果］ 以上説明した様に、本発明によれば明るく１色線度が高
く、かつ大画面化の容易な放電形発光装置を得ることが
できる。[Effects of the Invention] As described above, according to the present invention, it is possible to obtain a discharge type light emitting device that is bright, has a high monochromatic linearity, and can easily be made into a large screen.

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

第１図は本発明の実施例を示す図、第２図は従来装置を
示す図である。 ■・・・基板、２，３・・・電極、４・・・誘電体層。FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional device. ■... Substrate, 2, 3... Electrode, 4... Dielectric layer.

Claims (1)

【特許請求の範囲】[Claims] （１）第１及び第２の電極群が、互いに交差する様に配
置した基板を、放電ガスを封入した容器中に設け、前記
第１及び第２の電極の選択された交点で放電させる様に
した放電形発光装置において、少なくとも第１及び第２
の電極群の交点において、電極間に誘電体層を設け、第
１及び第２の電極群に蛍光体を被覆したことを特徴とす
る特許請求の範囲第１項記載の放電形発光装置。(1) A substrate on which first and second electrode groups are arranged so as to intersect with each other is provided in a container filled with discharge gas, and a discharge is caused at a selected intersection of the first and second electrodes. In the discharge type light emitting device, at least the first and second
2. The discharge type light emitting device according to claim 1, wherein a dielectric layer is provided between the electrodes at the intersection of the electrode groups, and the first and second electrode groups are coated with a phosphor.