JP3169628B2 - Plasma display panel - Google Patents
Plasma display panelInfo
- Publication number
- JP3169628B2 JP3169628B2 JP10325891A JP10325891A JP3169628B2 JP 3169628 B2 JP3169628 B2 JP 3169628B2 JP 10325891 A JP10325891 A JP 10325891A JP 10325891 A JP10325891 A JP 10325891A JP 3169628 B2 JP3169628 B2 JP 3169628B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- black
- plasma display
- display panel
- transparent
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は情報表示端末や平面形テ
レビなどに用いられるプラズマディスプレイパネルの、
特に高コントラスト，高色純度のプラズマディスプレイ
パネルの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel used for an information display terminal or a flat panel television.
In particular, the present invention relates to a structure of a plasma display panel having high contrast and high color purity.
【０００２】[0002]
【従来の技術】プラズマディスプレイパネルにはＮｅの
発光色を利用するモノクロパネルと、蛍光体の発光色を
利用するカラーパネルとがあるが、本発明はいずれにも
共通する技術であるが、ここではカラープラズマディス
プレイパネルを例に採り説明する。2. Description of the Related Art There are two types of plasma display panels: a monochrome panel that uses the emission color of Ne and a color panel that uses the emission color of a phosphor. In the following, a color plasma display panel will be described as an example.
【０００３】カラープラズマディスプレイパネルはガス
放電によって発生した紫外線によって蛍光体を励起発光
させ可視光を得て表示動作させるディスプレイである
が、放電方式によりＡＣ型とＤＣ型に分類できる。ＡＣ
型の中でも反射型ＡＣ面放電型が輝度，発光効率，寿命
の点で優れているのでこれを例に採る。図３に従来の反
射型ＡＣ面放電プラズマディスプレイパネルの平面図を
示す。図４に図３のｂ−ｂ′における断面図を示す。図
４において、前面基板４９に透明電極４８を形成する。
この隣り合う透明電極４８の間に数十ｋＨｚから数百ｋ
Ｈｚのパルス状電圧を印加するのであるが、透明電極に
例えばＳｎＯ2を用いると、シート抵抗が通常数十Ω／
□と高いために、特に大型パネルや高精細パネルでは電
極抵抗が数十ｋΩになり、電圧パルスが十分に立ち上が
らず駆動が困難になる。そこで透明電極の上に黒色の顔
料と金属を混合した黒色電極４７を形成し電極の抵抗値
を下げる。黒色電極４７は例えばＲｕＯ2と銀の混合物
で厚膜技術で形成する。黒色にする理由はこの電極が表
示面側から見えるため黒色でないとコントラストや色純
度に悪影響がでるからである。この黒色電極４７を絶縁
層４６で被覆し保護層４５を形成する。絶縁層４６は例
えば透明ガラス厚膜、保護層４５は例えばＭｇＯで形成
する。一方、後面基板４０には書き込み電極４１を形成
し、これを絶縁層４２で被覆し、更に各画素になる部分
に各画素の発光色の蛍光体４３を塗布する。これに前述
の前面基板４９を黒色の材料よりなる隔壁４４を介して
張り合わせ気密封止し内部に放電可能なガス、例えばＨ
ｅとＸｅの混合ガスを２５０ｔｏｒｒ程度封入する。黒
色電極４７は隔壁４４と重なるように組み合わせるため
黒色電極４７によって放電セル３０の開口率が下がるこ
とはない。隣り合う透明電極４８の間にパルス状の交流
電圧を印加するとガス放電がおきプラズマ５１が生成さ
れる。ここで発生した紫外光５０で蛍光体４３を励起し
可視光５２を前面基板４９を通して得る。次にこれを図
３の平面図を参照して説明する。透明電極４８の上に黒
色電極４７を形成する。各放電セル３０は隔壁４４によ
って区切られている。黒色電極４７は隔壁４４と重なる
ように組立を行う。画素は三角配列で、電極が１本おき
に走査電極となっており、一本の走査電極で両側の放電
セルを走査する２行同時走査を行う。A color plasma display panel is a display that excites and emits a phosphor with ultraviolet rays generated by gas discharge to obtain visible light and performs a display operation, and can be classified into an AC type and a DC type according to a discharge method. AC
Among the molds, the reflection type AC surface discharge type is superior in terms of luminance, luminous efficiency and life, so this is taken as an example. FIG. 3 shows a plan view of a conventional reflective AC surface discharge plasma display panel. FIG. 4 is a sectional view taken along line bb 'of FIG. In FIG. 4, a transparent electrode 48 is formed on a front substrate 49.
A few tens of kHz to a few hundreds of k between the adjacent transparent electrodes 48
Although a pulse-like voltage of Hz is applied, when, for example, SnO 2 is used for the transparent electrode, the sheet resistance is usually several tens Ω /
□, the electrode resistance becomes tens of kΩ especially in a large panel or a high-definition panel, and the voltage pulse does not sufficiently rise to make driving difficult. Therefore, a black electrode 47 in which a black pigment and a metal are mixed is formed on the transparent electrode to reduce the resistance value of the electrode. The black electrode 47 is formed of, for example, a mixture of RuO 2 and silver by a thick film technique. The reason why the electrode is made black is that since the electrode is visible from the display surface side, if it is not black, the contrast and color purity are adversely affected. This black electrode 47 is covered with an insulating layer 46 to form a protective layer 45. The insulating layer 46 is formed of, for example, a thick transparent glass film, and the protective layer 45 is formed of, for example, MgO. On the other hand, a write electrode 41 is formed on the rear substrate 40, this is covered with an insulating layer 42, and a phosphor 43 of the emission color of each pixel is applied to a portion to be each pixel. The above-mentioned front substrate 49 is bonded to the above-mentioned front substrate 49 via a partition wall 44 made of a black material, hermetically sealed, and a gas capable of discharging inside, for example, H
A mixed gas of e and Xe is sealed at about 250 torr. Since the black electrode 47 is combined so as to overlap the partition wall 44, the aperture ratio of the discharge cell 30 does not decrease due to the black electrode 47. When a pulsed AC voltage is applied between adjacent transparent electrodes 48, gas discharge occurs and plasma 51 is generated. The phosphor 43 is excited by the ultraviolet light 50 generated here, and visible light 52 is obtained through the front substrate 49. Next, this will be described with reference to the plan view of FIG. The black electrode 47 is formed on the transparent electrode 48. Each discharge cell 30 is partitioned by a partition 44. The black electrode 47 is assembled so as to overlap the partition 44. The pixels are arranged in a triangular arrangement, and every other electrode serves as a scanning electrode, and one scanning electrode performs two-row simultaneous scanning for scanning discharge cells on both sides.
【０００４】[0004]
【発明が解決しようとする課題】上述のような構造のカ
ラープラズマディスプレイパネルでは、黒色電極をでき
るだけ抵抗を低く、且つできるだけ黒く作ることが望ま
しいが、実際は適当な材料がなく、上述したＲｕＯ2と
銀の混合物では色が暗緑色になってしまう。これはコン
トラストや色純度に悪影響を与え、表示品位を著しく落
としてしまう。ＲｕＯ2の混合比を大幅に増やせばある
程度黒くすることができるが、シート抵抗の上昇が著し
く電極としては使用できない。また顔料として例えば
鉄，クロム，ニッケルなどの金属酸化物の粉末を混合す
れば黒くすることができるが、やはり抵抗値が大幅に上
昇してしまう。抵抗値を下げるには黒色電極の膜厚を増
やせば良いが、この場合数十μｍの膜厚が必要でこれは
プロセス上困難であり、また基板上の凹凸が大幅に増え
絶縁層４６で電極のエッジを完全に被覆することが困難
になり絶縁破壊が生じ易くなる。In [0005] color plasma display panel having the structure described above, only the resistance can black electrodes low and and make possible black it is desirable, in fact has no suitable material, and RuO 2 as described above A mixture of silver will result in a dark green color. This has an adverse effect on contrast and color purity, and significantly lowers display quality. If the mixing ratio of RuO 2 is greatly increased, it can be made black to some extent, but the sheet resistance increases remarkably and cannot be used as an electrode. If a powder of a metal oxide such as iron, chromium, nickel or the like is mixed as a pigment, it can be made black, but the resistance value is also greatly increased. In order to lower the resistance value, the thickness of the black electrode may be increased, but in this case, a thickness of several tens of μm is required, which is difficult in the process, and the unevenness on the substrate is greatly increased. It is difficult to completely cover the edge of the substrate and dielectric breakdown easily occurs.
【０００５】本発明の目的は、このような問題点を解決
したプラズマディスプレイパネルを提供することにあ
る。An object of the present invention is to provide a plasma display panel which solves such a problem.
【０００６】[0006]
【課題を解決するための手段】透明電極の抵抗値を下げ
るために形成する黒色電極を２層構造にする。すなわち
透明電極上に抵抗値は高いがより黒色の材料で電極を形
成し、この上に抵抗値の低い金属を重ねる。The black electrode formed to reduce the resistance of the transparent electrode has a two-layer structure. That is, an electrode having a higher resistance but a blacker material is formed on the transparent electrode, and a metal having a lower resistance is stacked on the electrode.
【０００７】[0007]
【作用】透明電極上にまずより黒色な材料で電極を形成
することにより、パネル表示面を黒色にし、コントラス
トと色純度を改善できる。またこの上に金属電極を形成
することにより抵抗値を下げることができる。この場
合、黒色電極の膜厚は薄くて良く、また金属電極も抵抗
が低いので薄くて良い。したがって基板面の凹凸が少な
くなり絶縁膜をきれいに形成することができ、絶縁破壊
も起きなくなる。By forming an electrode of a blacker material on the transparent electrode, the display surface of the panel can be made black and the contrast and color purity can be improved. By forming a metal electrode thereon, the resistance value can be reduced. In this case, the thickness of the black electrode may be small, and the metal electrode may be thin because the resistance is low. Therefore, unevenness on the substrate surface is reduced, the insulating film can be formed cleanly, and dielectric breakdown does not occur.
【０００８】[0008]
【実施例】次に本発明の実施例を図面を参照して説明す
る。ここでは従来例で説明した反射型ＡＣ面放電プラズ
マディスプレイパネルを例に採って説明するが、透明電
極を用い、この抵抗値を下げるために透明電極上に金属
電極を形成するプラズマディスプレイパネル全てに共通
する発明である。Next, an embodiment of the present invention will be described with reference to the drawings. Here, the reflection type AC surface discharge plasma display panel described in the conventional example will be described as an example, but all the plasma display panels using a transparent electrode and forming a metal electrode on the transparent electrode in order to reduce the resistance value are used. It is a common invention.
【０００９】図１に本発明の一実施例の平面図を示す。
図２に図１のａ−ａ′における断面図を示す。図２にお
いて基本的構造は従来例で説明した図４と同じである。
すなわち、図４と同様の後面電極１０，書き込み電極，
絶縁層１２，蛍光体１３，隔壁１４，保護層１５，絶縁
層１６，透明電極１９，前面電極２０を有しており、透
明電極１９上に形成した黒色電極１８と金属電極１７が
異なる。黒色電極１８は例えば銀に鉄，クロム，ニッケ
ル等の金属酸化物を１対３程度の割合で混合したもの、
あるいは銀にＲｕＯ2を１対１程度の割合で混合したも
のなどをスクリーン印刷等の方法で形成する。この黒色
電極１８は膜厚を薄く、例えば、３μｍ程度に形成すれ
ば、たとえ抵抗値が高くてもこの上に形成する金属電極
１７と透明電極１９とのコンタクトはまったく問題無
い。金属電極１７は例えば銀の膜厚をスクリーン印刷で
形成するが、Ａｌ等の薄膜をフォトリソグラフィーで形
成する。銀やＡｌ等の金属電極であれば膜厚が薄くても
十分低い抵抗値が得られる。従って基板面の凹凸も少な
くなり、絶縁層１６もきれいに形成することができ、絶
縁破壊の可能性もなくなる。なお金属電極１７は黒色電
極１８より若干幅を狭くしておくと、パターン形成の際
の位置ずれが多少生じても金属電極１７が表示面側から
見えることはない。FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is a sectional view taken along aa 'of FIG. In FIG. 2, the basic structure is the same as FIG. 4 described in the conventional example.
That is, the back surface electrode 10, the writing electrode,
It has an insulating layer 12, a phosphor 13, a partition 14, a protective layer 15, an insulating layer 16, a transparent electrode 19, and a front electrode 20. The black electrode 18 formed on the transparent electrode 19 and the metal electrode 17 are different. The black electrode 18 is, for example, a mixture of silver and metal oxides such as iron, chromium, and nickel at a ratio of about 1: 3;
Alternatively, a mixture of silver and RuO 2 at a ratio of about 1: 1 is formed by a method such as screen printing. If the black electrode 18 is formed to be thin, for example, about 3 μm, even if the resistance value is high, the contact between the metal electrode 17 formed thereon and the transparent electrode 19 has no problem at all. For example, the metal electrode 17 is formed by screen printing with a silver film thickness, and a thin film of Al or the like is formed by photolithography. With a metal electrode such as silver or Al, a sufficiently low resistance value can be obtained even if the film thickness is small. Therefore, unevenness on the substrate surface is reduced, the insulating layer 16 can be formed cleanly, and the possibility of dielectric breakdown is eliminated. If the width of the metal electrode 17 is made slightly smaller than that of the black electrode 18, the metal electrode 17 will not be seen from the display surface side even if a slight displacement occurs during pattern formation.
【００１０】図１の平面図に示すように、上述の構造に
より表示面側から見えるものは、黒色の材料で形成した
隔壁１４と、黒色電極１８と放電セル１だけであり、非
常に高コントラストで色純度が優れたカラープラズマデ
ィスプレイパネルができた。As shown in the plan view of FIG. 1, only the partition walls 14 made of a black material, the black electrodes 18 and the discharge cells 1 can be seen from the display surface side due to the above-described structure. Thus, a color plasma display panel having excellent color purity was obtained.
【００１１】このプラズマディスプレイパネルにおい
て、隣り合う透明電極１９の間にパルス状の交流電圧を
印加するとガス放電がおきプラズマ２２が生成される。
ここで発生した紫外光２１で蛍光体１３を励起し可視光
２３を前面基板２０を通して得る。In this plasma display panel, when a pulsed AC voltage is applied between adjacent transparent electrodes 19, gas discharge occurs and plasma 22 is generated.
The phosphor 13 is excited by the ultraviolet light 21 generated here, and visible light 23 is obtained through the front substrate 20.
【００１２】上記説明では黒色電極と金属電極を透明電
極の上に形成する形を採って説明したが、逆に前面基板
上に先に黒色電極と金属電極を形成し、この上に透明電
極を形成しても同様の効果が得られた。また上記黒色電
極は金属電極と比較して抵抗が高いため、これを利用し
て放電電流の制限をすることも可能である。すなわちＡ
Ｃ型プラズマディスプレイパネルは、面放電電極に電圧
パルスを印加すると、非常に高いピーク電流値を持った
放電電流が流れる。このため駆動回路に大きな負担がか
かる。本発明の構造のプラズマディスプレイパネルで
は、黒色電極の抵抗値を適当に選ぶことによって、この
ピーク電流値を制限することも可能である。たとえば透
明電極と、金属電極の間の抵抗値を、放電セル一つあた
り１０ｋΩとすると、放電電流のピーク値は約３０％低
減することが可能であった。これによって駆動回路の負
担が減ることになり、より安価な駆動回路を用いること
も可能となった。 In the above description, the black electrode and the metal electrode are formed on the transparent electrode. However, the black electrode and the metal electrode are formed first on the front substrate, and the transparent electrode is formed thereon. The same effect was obtained by forming. In addition, the black
The pole has a higher resistance than the metal electrode.
It is also possible to limit the discharge current. That is, A
The C-type plasma display panel has a voltage applied to the surface discharge electrode.
When a pulse was applied, it had a very high peak current value
A discharge current flows. Is there a large burden on the drive circuit?
Call With the plasma display panel of the structure of the present invention
Can be selected by appropriately selecting the resistance of the black electrode.
It is also possible to limit the peak current value. For example,
The resistance value between the bright electrode and the metal electrode
10 kΩ, the peak value of the discharge current is about 30% lower.
It was possible to reduce. This makes the drive circuit
Use less expensive drive circuits
Became possible.
【００１３】[0013]
【発明の効果】以上述べたように本発明のプラズマディ
スプレイパネルにより、透明電極の抵抗値を下げ、且つ
高コントラストで優れた色純度の表示面を持つプラズマ
ディスプレイパネルを作ることができた。As described above, according to the plasma display panel of the present invention, a plasma display panel having a display surface with high contrast and excellent color purity can be manufactured while reducing the resistance value of the transparent electrode.
【図１】本発明の実施例の平面図である。FIG. 1 is a plan view of an embodiment of the present invention.
【図２】図１のａ−ａ′における断面図である。FIG. 2 is a sectional view taken along aa 'of FIG.
【図３】従来例の平面図である。FIG. 3 is a plan view of a conventional example.
【図４】図３のｂ−ｂ′における断面図である。FIG. 4 is a sectional view taken along line bb 'of FIG.
１，３０ 放電セル １０，４０ 後面基板 １１，４１ 書き込み電極 １２，４２ 絶縁層 １３，４３ 蛍光体 １４，４４ 隔壁 １５，４５ 保護層 １６，４６ 絶縁層 １７ 金属電極 １８，４７ 黒色電極 １９，４８ 透明電極 ２０，４９ 前面基板 ２１，５０ 紫外光 ２２，５１ プラズマ ２３，５２ 可視光 1,30 Discharge cell 10,40 Back substrate 11,41 Write electrode 12,42 Insulating layer 13,43 Phosphor 14,44 Partition wall 15,45 Protective layer 16,46 Insulating layer 17 Metal electrode 18,47 Black electrode 19,48 Transparent electrode 20, 49 Front substrate 21, 50 Ultraviolet light 22, 51 Plasma 23, 52 Visible light
フロントページの続き (56)参考文献 特開 昭57−46494（ＪＰ，Ａ) 特開 平２−284334（ＪＰ，Ａ) 特開 昭54−150073（ＪＰ，Ａ) 特開 昭59−36297（ＪＰ，Ａ) 特公 平１−42106（ＪＰ，Ｂ２)Continuation of front page (56) References JP-A-57-46494 (JP, A) JP-A-2-284334 (JP, A) JP-A-54-150073 (JP, A) JP-A-59-36297 (JP, A) , A) Tokiko Hei 1-42106 (JP, B2)
Claims (1)
た透明電極群と前記透明電極上に形成された不透明電極
とを有するプラズマディスプレイパネルにおいて、 前記不透明電極は、黒色顔料を混合した第１の金属電極
と、顔料を混合しない前記第１の金属電極より比抵抗の
小さい第２の金属電極との２層構造であり、 前記第２の金属電極の幅は、前記第１の電極の幅よりも
狭く形成したことを 特徴とするプラズマディスプレイパ
ネル。1. A plasma display panel having a transparent electrode group formed on a transparent insulating substrate as a front substrate and an opaque electrode formed on the transparent electrode, wherein the opaque electrode is formed by mixing a black pigment. A first metal electrode and a second metal electrode having a lower specific resistance than the first metal electrode in which the pigment is not mixed , wherein the width of the second metal electrode is equal to that of the first electrode. Than width
A plasma display panel characterized by being narrowly formed .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10325891A JP3169628B2 (en) | 1991-02-26 | 1991-02-26 | Plasma display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10325891A JP3169628B2 (en) | 1991-02-26 | 1991-02-26 | Plasma display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04272634A JPH04272634A (en) | 1992-09-29 |
| JP3169628B2 true JP3169628B2 (en) | 2001-05-28 |
Family
ID=14349419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10325891A Expired - Fee Related JP3169628B2 (en) | 1991-02-26 | 1991-02-26 | Plasma display panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3169628B2 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3163563B2 (en) | 1995-08-25 | 2001-05-08 | 富士通株式会社 | Surface discharge type plasma display panel and manufacturing method thereof |
| US5900694A (en) * | 1996-01-12 | 1999-05-04 | Hitachi, Ltd. | Gas discharge display panel and manufacturing method thereof |
| US6156433A (en) * | 1996-01-26 | 2000-12-05 | Dai Nippon Printing Co., Ltd. | Electrode for plasma display panel and process for producing the same |
| WO1998027570A1 (en) * | 1996-12-17 | 1998-06-25 | Toray Industries, Inc. | Method and device for manufacturing plasma display |
| US5851732A (en) * | 1997-03-06 | 1998-12-22 | E. I. Du Pont De Nemours And Company | Plasma display panel device fabrication utilizing black electrode between substrate and conductor electrode |
| JP3739163B2 (en) | 1997-03-31 | 2006-01-25 | 三菱電機株式会社 | Plasma display panel |
| JP3331918B2 (en) * | 1997-08-27 | 2002-10-07 | 日本電気株式会社 | Driving method of discharge display panel |
| TW392186B (en) | 1997-12-01 | 2000-06-01 | Hitachi Ltd | Plasma display panel and image display using the same |
| US6281628B1 (en) | 1998-02-13 | 2001-08-28 | Lg Electronics Inc. | Plasma display panel and a driving method thereof |
| JP3661398B2 (en) | 1998-03-24 | 2005-06-15 | 松下電器産業株式会社 | Plasma display panel |
| EP1017083A1 (en) * | 1998-12-21 | 2000-07-05 | Thomson Plasma | Plasma display having a porous structure |
| JP4975338B2 (en) * | 2006-03-01 | 2012-07-11 | 三菱電機株式会社 | Solar cell and manufacturing method thereof |
| JP4896801B2 (en) * | 2007-04-23 | 2012-03-14 | Ｄｏｗａエレクトロニクス株式会社 | Black electrode, display panel, and method of manufacturing black electrode |
| KR102068870B1 (en) | 2016-06-17 | 2020-01-21 | 주식회사 엘지화학 | Electrode structure, electronic device comprising the same and manufacturing method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6016077B2 (en) * | 1980-09-01 | 1985-04-23 | シャープ株式会社 | Electrode structure of thin film EL panel |
| JPS6442106A (en) * | 1987-08-07 | 1989-02-14 | Mitsubishi Aluminium | Electromagnetic coil |
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1991
- 1991-02-26 JP JP10325891A patent/JP3169628B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JPH04272634A (en) | 1992-09-29 |
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