JPH07320645A - Plasma display panel - Google Patents
Plasma display panelInfo
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- JPH07320645A JPH07320645A JP10704094A JP10704094A JPH07320645A JP H07320645 A JPH07320645 A JP H07320645A JP 10704094 A JP10704094 A JP 10704094A JP 10704094 A JP10704094 A JP 10704094A JP H07320645 A JPH07320645 A JP H07320645A
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- Prior art keywords
- phosphor
- thin film
- display
- substance
- refractive index
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は表示色変換用の蛍光体層
を有したプラズマディスプレイパネル（ＰＤＰ）に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (PDP) having a phosphor layer for display color conversion.
【０００２】ＰＤＰは、視認性の上で有利な自己発光型
の表示デバイスであり、画面の大型化及び高速表示が可
能であることから、ＣＲＴに代わる薄型表示デバイスと
して注目されている。特に蛍光体によってフルカラー表
示を行う面放電型ＰＤＰは、ハイビジョンを含むテレビ
ジョン映像の分野にその用途が拡大されつつある。[0002] PDPs are self-luminous display devices that are advantageous in terms of visibility, and because they are capable of large screens and high-speed display, they have attracted attention as thin display devices that replace CRTs. In particular, the surface discharge PDP that performs full-color display by using a phosphor is expanding its application to the field of television images including high definition.
【０００３】[0003]
【従来の技術】蛍光体による特定色（多色及びフルカラ
ーを含む）の表示に適した構造のＰＤＰとして、ＡＣ駆
動形式の面放電型ＰＤＰが知られている。2. Description of the Related Art An AC drive type surface discharge PDP is known as a PDP having a structure suitable for displaying a specific color (including multicolor and full color) by a phosphor.
【０００４】例えば３電極構造の面放電型ＰＤＰは、本
発明の実施例を示す図１のように、一方の基板１１上に
互いに平行に隣接配置された一対の表示電極Ｘ，Ｙから
なる電極対１２と、電極対１２と直交するように配列さ
れたアドレス電極Ａとを有する。表示電極Ｘ，Ｙによっ
て面放電セル（表示の主放電セル）が画定され、一方の
表示電極Ｙとアドレス電極Ａとによって単位発光領域Ｅ
Ｕの点灯又は非点灯を選択するためのアドレス放電セル
が画定される。For example, a surface discharge type PDP having a three-electrode structure, as shown in FIG. 1 showing an embodiment of the present invention, is an electrode composed of a pair of display electrodes X and Y arranged adjacent to each other in parallel on one substrate 11. It has a pair 12 and an address electrode A arranged so as to be orthogonal to the electrode pair 12. A surface discharge cell (a main discharge cell for display) is defined by the display electrodes X and Y, and a unit light emitting region E is formed by one display electrode Y and an address electrode A.
An address discharge cell is defined for selecting whether to light U or not.
【０００５】蛍光体層は、アドレス電極Ａを含めて他方
の基板２１の内面を被覆するように設けられ、表示電極
Ｘ，Ｙ間の面放電で生じた紫外線によって励起されて発
光する。The phosphor layer is provided so as to cover the inner surface of the other substrate 21 including the address electrode A, and is excited by ultraviolet rays generated by the surface discharge between the display electrodes X and Y to emit light.
【０００６】フルカラー表示を行う場合には、表示画面
を構成する各画素（ドット）ＥＧに対して、Ｒ（赤）、
Ｇ（緑）、Ｂ（青）のいわゆる３原色の蛍光体層２８
Ｒ，２８Ｇ，２８Ｂが対応づけられる。通常、各蛍光体
層２８Ｒ，２８Ｇ，２８Ｂは、スクリーン印刷法を用い
て、粒状の所定発光色の蛍光物質を主成分とする蛍光体
ペーストを各色毎に順に塗布して焼成することにより形
成される。When performing full-color display, R (red) for each pixel (dot) EG forming the display screen,
So-called three primary color phosphor layers 28 of G (green) and B (blue)
R, 28G and 28B are associated with each other. Usually, each phosphor layer 28R, 28G, 28B is formed by sequentially applying a phosphor paste containing a granular fluorescent substance of a predetermined emission color as a main component for each color and baking it by using a screen printing method. It
【０００７】従来においては、Ｒの蛍光体層２８Ｒを構
成する蛍光物質として、例えば平均粒径が３μｍ程度の
Ｙ2 Ｏ3 ：Ｅｕが用いられ、Ｇの蛍光体層２８Ｇを構成
する蛍光物質として、例えば平均粒径が３μｍ程度のＢ
ａＯ・Ａｌ2 Ｏ3 ：Ｍｎが用いられ、Ｂの蛍光体層２８
Ｂを構成する蛍光物質として、例えば平均粒径が５μｍ
程度の３（Ｂａ，Ｍｇ）Ｏ・８Ａｌ2 Ｏ3 ：Ｅｕが用い
られていた。Conventionally, for example, Y 2 O 3 : Eu having an average particle size of about 3 μm is used as the fluorescent substance forming the R fluorescent layer 28R, and is used as the fluorescent substance forming the G fluorescent layer 28G. , For example, B having an average particle size of about 3 μm
aO.Al 2 O 3 : Mn is used, and the phosphor layer 28 of B is used.
As the fluorescent substance constituting B, for example, the average particle size is 5 μm
About 3 (Ba, Mg) O.8Al 2 O 3 : Eu was used.
【０００８】なお、各蛍光物質の粒径は、放電時のイオ
ン衝撃による経時変化（劣化）を考慮し、表示品質（輝
度や色再現性）の点で１００００時間以上の寿命が得ら
れる最小値よりも大きい値とされる。The particle size of each fluorescent substance is the minimum value that can provide a life of 10,000 hours or more in view of display quality (luminance and color reproducibility), taking into consideration the time-dependent change (deterioration) due to ion bombardment during discharge. Is set to a value greater than.
【０００９】[0009]
【発明が解決しようとする課題】ところで、表示はより
高輝度であるのが望ましく、高輝度化はディスプレイ装
置の普遍的課題である。また、特にカラーＰＤＰでは、
Ｂの輝度がＲ，Ｇに比べて低いので、３色の蛍光体層を
それぞれ最大輝度で発光させたときに得られる白色の色
度（色度図上の座標）がＣＲＴの色度と異なり、ＰＤＰ
をＣＲＴの代替デバイスとして用いる上で、色再現性の
面で不都合があるという問題があった。By the way, it is desirable that the display has higher brightness, and higher brightness is a universal problem of the display device. Also, especially in color PDPs,
Since the brightness of B is lower than that of R and G, the chromaticity of white (coordinates on the chromaticity diagram) obtained when the phosphor layers of three colors are made to emit light at maximum brightness is different from that of the CRT. , PDP
However, there is a problem in terms of color reproducibility when using as a substitute device for the CRT.
【００１０】本発明は、このような問題に鑑みてなさた
もので、蛍光体による表示の輝度を高め、視認性の向上
及び色再現性の改善を可能にすることを目的としてい
る。The present invention has been made in view of the above problems, and an object thereof is to increase the brightness of display by a phosphor and to improve the visibility and the color reproducibility.
【００１１】[0011]
【課題を解決するための手段】請求項１の発明に係るＰ
ＤＰは、上述の課題を解決するため、図２に示すよう
に、多数の粒状の蛍光物質８０からなる蛍光体層２８を
有したプラズマディスプレイパネル１であって、個々の
前記蛍光物質８０が、それよりも屈折率の小さい透光性
物質の薄膜８１で被覆されてなる。[Means for Solving the Problems] P according to the invention of claim 1
In order to solve the above-mentioned problems, DP is a plasma display panel 1 having a phosphor layer 28 composed of a large number of granular phosphor materials 80, as shown in FIG. It is covered with a thin film 81 of a transparent material having a smaller refractive index than that.
【００１２】請求項２の発明に係るＰＤＰは、前記透光
性物質の薄膜８１の膜厚が、前記蛍光物質８０を励起す
る紫外線の透過率が増大する値に設定されてなる。In the PDP according to the second aspect of the present invention, the film thickness of the thin film 81 of the translucent material is set to a value that increases the transmittance of the ultraviolet light that excites the fluorescent material 80.
【００１３】[0013]
【作用】粒状の蛍光物質８０をそれよりの屈折率の小さ
い透光性物質の薄膜８１で被覆することにより、蛍光物
質８０の表層面での反射が低減され、蛍光物質８０にお
ける透過率が増大する。蛍光物質８０に入射する紫外線
の透過率が増大すると、励起効率が高まって表示の輝度
が高まる。また、薄膜８１が放電発光時のイオンから蛍
光物質８０を保護し、蛍光物質８０の劣化を防ぐ。By covering the granular fluorescent substance 80 with the thin film 81 of the translucent substance having a smaller refractive index than that, the reflection on the surface layer of the fluorescent substance 80 is reduced and the transmittance of the fluorescent substance 80 is increased. To do. When the transmittance of ultraviolet rays incident on the fluorescent material 80 increases, the excitation efficiency increases and the display brightness increases. Further, the thin film 81 protects the fluorescent substance 80 from the ions at the time of discharge light emission, and prevents the fluorescent substance 80 from being deteriorated.
【００１４】薄膜８１が単層構造の場合、透過率は、薄
膜８１の厚さｄ、薄膜８１の屈折率ｎ１、及び入射光の
波長λの関係が（１）式で表されるときに極大となる。
そして、さらに薄膜８１の屈折率ｎと、蛍光物質８０の
屈折率ｎ２との関係が（２）式で表されるときに最大と
なる。When the thin film 81 has a single-layer structure, the transmittance is maximum when the relationship between the thickness d of the thin film 81, the refractive index n1 of the thin film 81, and the wavelength λ of the incident light is expressed by the equation (1). Becomes
Further, the relationship between the refractive index n of the thin film 81 and the refractive index n2 of the fluorescent substance 80 becomes maximum when represented by the expression (2).
【００１５】[0015]
【数１】 [Equation 1]
【００１６】[0016]
【実施例】図１は本発明に係るＰＤＰ１の１画素ＥＧに
対応する部分の構造を示す分解斜視図、図２は青色の蛍
光体層２８Ｂの構造を模式的に示す拡大断面図である。1 is an exploded perspective view showing the structure of a portion corresponding to one pixel EG of a PDP 1 according to the present invention, and FIG. 2 is an enlarged sectional view schematically showing the structure of a blue phosphor layer 28B.
【００１７】図１のように、ＰＤＰ１は、マトリクス表
示の単位発光領域ＥＵに一対の表示電極Ｘ，Ｙとアドレ
ス電極Ａとが対応する３電極構造を有し、蛍光体の配置
形態による分類の上で反射型と呼称される面放電型ＰＤ
Ｐである。As shown in FIG. 1, the PDP 1 has a three-electrode structure in which a pair of display electrodes X and Y and an address electrode A correspond to a unit light emitting region EU of matrix display, and is classified according to the arrangement form of phosphors. Surface discharge type PD, which is called reflection type above
P.
【００１８】面放電のための表示電極Ｘ，Ｙは、表示面
Ｈ側のガラス基板１１上に設けられ、壁電荷を利用して
放電を維持するＡＣ駆動のための誘電体層１７によって
放電空間３０に対して被覆されている。誘電体層１７の
表面には、その保護膜として数千Å程度の厚さのＭｇＯ
膜１８が設けられている。The display electrodes X and Y for surface discharge are provided on the glass substrate 11 on the display surface H side, and a discharge space is provided by a dielectric layer 17 for AC driving that uses wall charges to maintain discharge. Coated for 30. On the surface of the dielectric layer 17, a protective film of MgO having a thickness of about several thousand liters is used.
A membrane 18 is provided.
【００１９】なお、表示電極Ｘ，Ｙは、放電空間３０に
対して表示面Ｈ側に配置されることから、面放電を広範
囲とし且つ表示光の遮光を最小限とするため、ネサ膜な
どからなる幅の広い透明導電膜４１とその導電性を補う
幅の狭いバス金属膜４２とから構成されている。Since the display electrodes X and Y are arranged on the display surface H side with respect to the discharge space 30, the surface discharge is made wide and the shielding of the display light is minimized. The transparent conductive film 41 has a wide width and the bus metal film 42 has a narrow width to compensate for the conductivity.
【００２０】一方、単位発光領域ＥＵを選択的に発光さ
せるためのアドレス電極Ａは、背面側のガラス基板２１
上に、表示電極Ｘ，Ｙと直交するように一定ピッチで配
列されている。アドレス電極Ａの形成に厚膜法を用いた
場合、アドレス電極Ａの厚さは、５〜１５μｍ程度であ
る。On the other hand, the address electrode A for selectively emitting light in the unit light emitting region EU is provided with the glass substrate 21 on the back side.
The display electrodes X and Y are arranged on the upper side at a constant pitch. When the thick film method is used to form the address electrode A, the thickness of the address electrode A is about 5 to 15 μm.
【００２１】各アドレス電極Ａの間には、１００〜１５
０μｍ程度の高さを有したストライプ状の隔壁２９が設
けられ、これによって放電空間３０がライン方向（表示
電極Ｘ，Ｙの延長方向）に単位発光領域ＥＵ毎に区画さ
れ、且つ放電空間３０の間隙寸法が規定されている。Between each address electrode A, 100 to 15
Stripe-shaped barrier ribs 29 having a height of about 0 μm are provided, whereby the discharge spaces 30 are partitioned in the line direction (extension direction of the display electrodes X and Y) for each unit light-emitting region EU, and the discharge spaces 30 are formed. The gap size is specified.
【００２２】また、ガラス基板２１には、アドレス電極
Ａの上面及び隔壁２９の側面を含めて背面側の内面を被
覆するように、Ｒ（赤），Ｇ（緑），Ｂ（青）の３原色
の蛍光体層２８Ｒ，２８Ｇ，２８Ｂが、スクリーン印刷
法などによるペーストの塗布及びその後の焼成によって
設けられている。各蛍光体層２８Ｒ，２８Ｇ，２８Ｂに
おけるアドレス電極Ａの上面を覆う部分の厚さは、２０
μｍ程度である。The glass substrate 21 is covered with R (red), G (green), and B (blue) so as to cover the inner surface of the rear surface including the upper surface of the address electrode A and the side surface of the partition wall 29. The primary color phosphor layers 28R, 28G, 28B are provided by applying a paste by a screen printing method or the like and then firing it. The thickness of the portion of each phosphor layer 28R, 28G, 28B that covers the upper surface of the address electrode A is 20
It is about μm.
【００２３】このような蛍光体層は、面放電時に放電空
間３０内の放電ガスが放つ紫外線（波長λ＝１４７ｎ
ｍ）によって励起されて発光する。放電ガスは、ネオン
にキセノン（１〜１５％モル程度）を混合したペニング
ガスである。Such a phosphor layer has ultraviolet rays (wavelength λ = 147n) emitted by the discharge gas in the discharge space 30 during surface discharge.
It is excited by m) and emits light. The discharge gas is Penning gas in which neon is mixed with xenon (about 1 to 15% mol).
【００２４】表示面Ｈ内において、各画素ＥＧはライン
方向に並ぶ同一面積の３つの単位発光領域ＥＵから構成
され、これら３つの単位発光領域ＥＵのそれぞれに蛍光
体層２８Ｒ，２８Ｇ，２８Ｂが１色ずつ対応づけられて
いる。なお、各色の蛍光体層２８Ｒ，２８Ｇ，２８Ｂは
アドレス電極Ａの延長方向に連続しているが、放電が局
所的であることから、蛍光体層２８Ｒ，２８Ｇ，２８Ｂ
における各単位発光領域ＥＵに対応した部分を選択的に
発光させることができる。In the display surface H, each pixel EG is composed of three unit light emitting regions EU having the same area and arranged in the line direction, and one phosphor layer 28R, 28G, 28B is provided in each of the three unit light emitting regions EU. It is associated with each color. Note that the phosphor layers 28R, 28G, and 28B of the respective colors are continuous in the extension direction of the address electrode A, but the discharge is local, so that the phosphor layers 28R, 28G, and 28B are local.
It is possible to selectively emit light in a portion corresponding to each unit light emitting region EU in.
【００２５】表示に際しては、書込みアドレス法又は消
去アドレス法により、表示内容に応じて選択した単位発
光領域ＥＵに壁電荷を蓄積させた後、表示電極Ｘ，Ｙに
交互に放電維持電圧パルスを印加する。これにより、壁
電荷を有する単位発光領域ＥＵのみにおいて、パルスを
印加する毎に面放電が生じ、所定色の蛍光体層２８Ｒ，
２８Ｇ，２８Ｂが発光する。このとき、発光させる蛍光
体層２８Ｒ，２８Ｇ，２８Ｂの組み合わせを適宜選定す
ることにより、多色表示を行うことができ、さらに各蛍
光体層２８Ｒ，２８Ｇ，２８Ｂの輝度の階調制御を行う
ことにより、フルカラー表示が可能となる。At the time of display, after the wall charges are accumulated in the unit light emitting region EU selected according to the display content by the write address method or the erase address method, the discharge sustaining voltage pulse is alternately applied to the display electrodes X and Y. To do. As a result, only in the unit light-emission region EU having wall charges, surface discharge occurs each time a pulse is applied, and the phosphor layer 28R of a predetermined color,
28G and 28B emit light. At this time, multi-color display can be performed by appropriately selecting the combination of the phosphor layers 28R, 28G, 28B that emit light, and gradation control of the brightness of each phosphor layer 28R, 28G, 28B can be performed. This enables full-color display.
【００２６】さて、図２のように、青色域の表示光を発
する蛍光体層２８Ｂは、透光性の薄膜８１によってそれ
ぞれ被覆された多数の粒状の蛍光物質８０から構成され
ている。Now, as shown in FIG. 2, the phosphor layer 28B for emitting display light in the blue region is composed of a large number of granular phosphor substances 80 each covered with a light-transmitting thin film 81.
【００２７】蛍光物質８０は、例えば３（Ｂａ，Ｍｇ）
Ｏ・８Ａｌ2 Ｏ3 ：Ｅｕであり、その屈折率ｎ２は１．
４２〜１．５２程度である。薄膜８１は、その屈折率ｎ
１が蛍光物質８０の屈折率ｎ２よりも小さく（ｎ１＜ｎ
２）、且つ表示光の吸収が少ない透光性物質、例えば二
酸化珪素、フッ化マグネシウム、アルミナなどからな
る。薄膜８１の形成方法としては、蒸着法、ディップ
法、スパッタ法、スプレー法などのマイクロカプセル化
手法を用いることができる。なお、薄膜８１の屈折率ｎ
１としては、（２）式を満たす値（蛍光物質８０の屈折
率ｎ２の平方根）にできるだけ近い値が望ましい。The fluorescent substance 80 is, for example, 3 (Ba, Mg).
O.8Al 2 O 3 : Eu, and its refractive index n2 is 1.
It is about 42 to 1.52. The thin film 81 has a refractive index n
1 is smaller than the refractive index n2 of the phosphor 80 (n1 <n
2) In addition, it is made of a translucent substance that absorbs little display light, such as silicon dioxide, magnesium fluoride, or alumina. As a method of forming the thin film 81, a microcapsulation method such as a vapor deposition method, a dipping method, a sputtering method, or a spray method can be used. The refractive index n of the thin film 81
It is desirable that 1 be as close as possible to a value satisfying the expression (2) (square root of refractive index n2 of the phosphor 80).
【００２８】ここで、薄膜８１の膜厚ｄを適当に選定す
ることにより、放電空間３０から蛍光物質８０に入射す
る紫外線の透過率が増加して励起効率が高まるととも
に、蛍光物質８０から放電空間３０へ射出する青色の表
示光の透過率も増加し、これらが相まって青色の発光強
度が増大する。Here, by appropriately selecting the film thickness d of the thin film 81, the transmittance of ultraviolet rays entering the fluorescent material 80 from the discharge space 30 is increased and the excitation efficiency is increased, and at the same time, the fluorescent material 80 is discharged into the discharge space. The transmittance of the blue display light emitted to 30 also increases, and in combination, the blue emission intensity increases.
【００２９】すなわち、薄膜８１の屈折率ｎ１を１．
４、紫外線の波長λを１４７ｎｍとすると、（１）式か
ら明らかなように、紫外線の透過率を高める上で、薄膜
８１の膜厚ｄの最適値ｄｕは、２６．２５（＝１４７÷
４÷１．４）ｎｍの奇数倍である。一方、蛍光物質８０
の発光波長λＢを４５０ｎｍとすると、表示光の透過率
を高める上で、薄膜８１の膜厚ｄの最適値ｄｂは、約８
０．３６（＝４５０÷４÷１．４）の奇数倍である。That is, the refractive index n1 of the thin film 81 is 1.
4. If the wavelength λ of ultraviolet rays is 147 nm, the optimum value du of the film thickness d of the thin film 81 is 26.25 (= 147 /
It is an odd multiple of 4 ÷ 1.4) nm. On the other hand, the fluorescent substance 80
When the emission wavelength λB of the thin film 81 is 450 nm, the optimum value db of the film thickness d of the thin film 81 is about 8 in order to increase the transmittance of the display light.
It is an odd multiple of 0.36 (= 450 ÷ 4 ÷ 1.4).
【００３０】そこで、最適値ｄｕと最適値ｄｂの最小公
倍数を膜厚ｄの値とすればよい。ただし、厳密に最小公
倍数とする必要はなく、両最適値ｄｕ，ｄｂに近い値で
あればよい。例えば、紫外線の透過率を優先させる場合
は、膜厚ｄの値を、７８．２５（＝２６．２５×３）≒
８０．３６とすればよい。また、逆に表示光の透過率を
優先させる場合は、膜厚ｄの値を、８０．３６（≒２
６．２５×３）とすればよい。Therefore, the least common multiple of the optimum value du and the optimum value db may be set as the value of the film thickness d. However, it is not necessary to strictly set the least common multiple, and a value close to both optimum values du and db may be used. For example, when the transmittance of ultraviolet rays is prioritized, the value of the film thickness d is 78.25 (= 26.25 × 3) ≈
It may be 80.36. On the contrary, when the transmittance of display light is prioritized, the value of the film thickness d is set to 80.36 (≈2
It may be 6.25 × 3).
【００３１】なお、図２（ｂ）に示す垂直入射の場合に
おいて、エネルギー透過率Πは、近似的に（３）式のよ
うに定義される。In the case of vertical incidence shown in FIG. 2B, the energy transmittance Π is approximately defined by the equation (3).
【００３２】[0032]
【数２】 [Equation 2]
【００３３】（３）式に基づく計算では、薄膜８１で青
色の蛍光物質８０を被覆することによる個々の蛍光物質
８０の輝度上昇は、約４．５％である。ただし、実際に
は蛍光体層２８の厚さ、疎密状態、配置形態に依存して
変化するものの、蛍光体層２８全体として、１５％以上
の輝度上昇を達成することができた。According to the calculation based on the equation (3), the brightness increase of each phosphor 80 by coating the blue phosphor 80 with the thin film 81 is about 4.5%. However, in reality, although it changes depending on the thickness of the phosphor layer 28, the sparse and dense state, and the arrangement form, it is possible to achieve a brightness increase of 15% or more for the phosphor layer 28 as a whole.
【００３４】上述の実施例においては、青色の蛍光体層
２８Ｂが薄膜８１で被覆した蛍光物質８０からなる例を
示したが、赤色及び緑色の蛍光体層２８Ｒ，２８Ｇにつ
いても、薄膜８１による高輝度化を行ってもよい。その
場合、赤色の波長が６２０ｎｍであり、緑色の波長が５
２０ｎｍであり、屈折率ｎ１を１．４とすると、赤色の
蛍光体層２８Ｒについては薄膜８１の膜厚ｄを例えば２
６．２５の４倍である１０５（≒６２０÷４÷１．４）
ｎｍとし、緑色の蛍光体層２８Ｇについても薄膜８１の
膜厚ｄを例えば１０５ｎｍとすれば、紫外線の透過率を
最大とし且つ表示光の射出を可及的に増大することがで
きる。Although the blue phosphor layer 28B is made of the phosphor material 80 coated with the thin film 81 in the above-mentioned embodiment, the red and green phosphor layers 28R and 28G are also enhanced by the thin film 81. Brightening may be performed. In that case, the red wavelength is 620 nm and the green wavelength is 5
If the thickness is 20 nm and the refractive index n1 is 1.4, the film thickness d of the thin film 81 of the red phosphor layer 28R is, for example, 2
105, which is four times 6.25 (≒ 620 ÷ 4 ÷ 1.4)
nm, and the thickness d of the thin film 81 of the green phosphor layer 28G is, for example, 105 nm, the transmittance of ultraviolet rays can be maximized and the emission of display light can be increased as much as possible.
【００３５】また、本発明は、マトリクス表示方式のカ
ラーＰＤＰに限らず、蛍光体層により単色又は多色表示
を行う他の各種のＰＤＰに適用可能である。Further, the present invention is not limited to the matrix display type color PDP, but can be applied to various other PDPs that perform monochromatic or multicolor display by the phosphor layer.
【００３６】[0036]
【発明の効果】本発明によれば、蛍光体による表示の輝
度を高めることができ、それによって視認性の向上、色
再現性の改善を図ることができる。According to the present invention, it is possible to increase the brightness of the display by the phosphor, thereby improving the visibility and the color reproducibility.
【図１】本発明に係るＰＤＰの分解斜視図である。FIG. 1 is an exploded perspective view of a PDP according to the present invention.
【図２】蛍光体層の構造を模式的に示す拡大断面図であ
る。FIG. 2 is an enlarged sectional view schematically showing the structure of a phosphor layer.
１ ＰＤＰ（プラズマディスプレイパネル） ２８Ｂ 蛍光体層 ８０ 蛍光物質 ８１ 薄膜 1 PDP (Plasma Display Panel) 28B Phosphor Layer 80 Phosphor Substance 81 Thin Film
Claims (2)
光体層（２８Ｂ）を有したプラズマディスプレイパネル
（１）であって、 個々の前記蛍光物質（８０）が、それよりも屈折率の小
さい透光性物質の薄膜（８１）で被覆されてなることを
特徴とするプラズマディスプレイパネル。1. A plasma display panel (1) having a phosphor layer (28B) comprising a large number of granular phosphors (80), wherein each phosphor (80) has a refractive index higher than that. A plasma display panel characterized by being coated with a thin film (81) of a light-transmitting substance having a small size.
前記蛍光物質を励起する紫外線の透過率が増大する値に
設定されてなることを特徴とする請求項１記載のプラズ
マディスプレイパネル。2. The thin film (81) of the translucent material has a thickness of
The plasma display panel according to claim 1, wherein the plasma display panel is set to a value that increases the transmittance of ultraviolet light that excites the fluorescent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10704094A JP3501498B2 (en) | 1994-05-20 | 1994-05-20 | Plasma display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10704094A JP3501498B2 (en) | 1994-05-20 | 1994-05-20 | Plasma display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07320645A true JPH07320645A (en) | 1995-12-08 |
| JP3501498B2 JP3501498B2 (en) | 2004-03-02 |
Family
ID=14449004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10704094A Expired - Fee Related JP3501498B2 (en) | 1994-05-20 | 1994-05-20 | Plasma display panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3501498B2 (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10125240A (en) * | 1996-08-29 | 1998-05-15 | Matsushita Electric Ind Co Ltd | Plasma display panel, and manufacture of phosphor for plasma display panel |
| JP2000087030A (en) * | 1998-09-11 | 2000-03-28 | Matsushita Electric Ind Co Ltd | Phosphor for plasma display panel and phosphor ink |
| US6100633A (en) * | 1996-09-30 | 2000-08-08 | Kabushiki Kaisha Toshiba | Plasma display panel with phosphor microspheres |
| JP2000268728A (en) * | 1999-03-19 | 2000-09-29 | Hitachi Ltd | Plasma display panel and image display device using same |
| JP2002038146A (en) * | 2001-05-18 | 2002-02-06 | Matsushita Electric Ind Co Ltd | Fluorescent substance for ink jet method and fluorescent substance ink |
| WO2004042834A1 (en) * | 2002-11-08 | 2004-05-21 | Nichia Corporation | Light emitting device, phosphor and method for preparing phosphor |
| JP2004161807A (en) * | 2002-11-08 | 2004-06-10 | Nichia Chem Ind Ltd | Nitride phosphor and light-emitting device |
| JP2005100954A (en) * | 2003-08-22 | 2005-04-14 | Matsushita Electric Ind Co Ltd | Plasma display panel, manufacturing method of the same, and thin film |
| KR100480750B1 (en) * | 1998-07-20 | 2005-07-12 | 삼성에스디아이 주식회사 | Surface treatment phosphor and its manufacturing method and fluorescent layer formation method of plasma display panel using the same |
| KR100603276B1 (en) * | 2001-01-29 | 2006-07-20 | 삼성에스디아이 주식회사 | Phosphor for plasma display panel |
| JP2006322001A (en) * | 2005-05-16 | 2006-11-30 | Samsung Electro Mech Co Ltd | Coated nanoparticle and electronic element utilizing the same |
| JP2007180037A (en) * | 1999-11-10 | 2007-07-12 | Matsushita Electric Works Ltd | Light emitting element, planar light emitting board, method of manufacturing light emitting element, planar fluorescent lamp, and plasma display |
| US7755286B2 (en) | 2005-08-25 | 2010-07-13 | Panasonic Corporation | Glass film, process for production thereof, and optical electronic device |
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- 1994-05-20 JP JP10704094A patent/JP3501498B2/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10125240A (en) * | 1996-08-29 | 1998-05-15 | Matsushita Electric Ind Co Ltd | Plasma display panel, and manufacture of phosphor for plasma display panel |
| US6100633A (en) * | 1996-09-30 | 2000-08-08 | Kabushiki Kaisha Toshiba | Plasma display panel with phosphor microspheres |
| KR100480750B1 (en) * | 1998-07-20 | 2005-07-12 | 삼성에스디아이 주식회사 | Surface treatment phosphor and its manufacturing method and fluorescent layer formation method of plasma display panel using the same |
| JP2000087030A (en) * | 1998-09-11 | 2000-03-28 | Matsushita Electric Ind Co Ltd | Phosphor for plasma display panel and phosphor ink |
| JP2000268728A (en) * | 1999-03-19 | 2000-09-29 | Hitachi Ltd | Plasma display panel and image display device using same |
| JP2007180037A (en) * | 1999-11-10 | 2007-07-12 | Matsushita Electric Works Ltd | Light emitting element, planar light emitting board, method of manufacturing light emitting element, planar fluorescent lamp, and plasma display |
| KR100603276B1 (en) * | 2001-01-29 | 2006-07-20 | 삼성에스디아이 주식회사 | Phosphor for plasma display panel |
| JP2002038146A (en) * | 2001-05-18 | 2002-02-06 | Matsushita Electric Ind Co Ltd | Fluorescent substance for ink jet method and fluorescent substance ink |
| JP2004161807A (en) * | 2002-11-08 | 2004-06-10 | Nichia Chem Ind Ltd | Nitride phosphor and light-emitting device |
| WO2004042834A1 (en) * | 2002-11-08 | 2004-05-21 | Nichia Corporation | Light emitting device, phosphor and method for preparing phosphor |
| JP4529349B2 (en) * | 2002-11-08 | 2010-08-25 | 日亜化学工業株式会社 | Nitride-based phosphor and light emitting device |
| US7511411B2 (en) | 2002-11-08 | 2009-03-31 | Nichia Corporation | Light emitting device, phosphor, and method for preparing phosphor |
| JP2005100954A (en) * | 2003-08-22 | 2005-04-14 | Matsushita Electric Ind Co Ltd | Plasma display panel, manufacturing method of the same, and thin film |
| US7329989B2 (en) | 2003-08-22 | 2008-02-12 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel and process for producing the plasma display panel |
| US7690961B2 (en) | 2003-08-22 | 2010-04-06 | Panasonic Corporation | Plasma display panel and process for producing the plasma display panel |
| JP4516793B2 (en) * | 2003-08-22 | 2010-08-04 | パナソニック株式会社 | Plasma display panel |
| US7880395B2 (en) | 2003-11-19 | 2011-02-01 | Panasonic Corporation | Method for restoring function of plasma display panel and plasma display panel |
| JP2006322001A (en) * | 2005-05-16 | 2006-11-30 | Samsung Electro Mech Co Ltd | Coated nanoparticle and electronic element utilizing the same |
| US7755286B2 (en) | 2005-08-25 | 2010-07-13 | Panasonic Corporation | Glass film, process for production thereof, and optical electronic device |
| JP2021081733A (en) * | 2016-03-30 | 2021-05-27 | ソニーグループ株式会社 | Light-emitting element, light source device, and projection display device |
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