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WO1998043270A1 - Ecran a plasma - Google Patents

Ecran a plasma Download PDF

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Publication number
WO1998043270A1
WO1998043270A1 PCT/JP1997/000932 JP9700932W WO9843270A1 WO 1998043270 A1 WO1998043270 A1 WO 1998043270A1 JP 9700932 W JP9700932 W JP 9700932W WO 9843270 A1 WO9843270 A1 WO 9843270A1
Authority
WO
WIPO (PCT)
Prior art keywords
plasma
display device
plasma display
protective layer
electrode
Prior art date
Application number
PCT/JP1997/000932
Other languages
English (en)
Japanese (ja)
Inventor
Takahisa Mizuta
Keizo Suzuki
Masaji Ishigaki
Original Assignee
Hitachi, Ltd.
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 Hitachi, Ltd. filed Critical Hitachi, Ltd.
Priority to PCT/JP1997/000932 priority Critical patent/WO1998043270A1/fr
Publication of WO1998043270A1 publication Critical patent/WO1998043270A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
    • H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/20—Constructional details
    • H01J11/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J11/38—Dielectric or insulating layers

Definitions

  • the present invention relates to a plasma display (hereinafter, referred to as PDP) device, and more particularly, to a surface shape of a protective layer that isolates plasma.
  • PDP plasma display
  • MgO also has the effect of protecting the electrode from plasma, and is widely used in current PDP equipment.
  • the surface of the layer in contact with the plasma is a plane, and the contact area with the plasma is uniquely determined as the area of the plane. Therefore, in order to increase the luminous efficiency of the PDP device and reduce the plasma firing voltage by utilizing the secondary electron emission characteristics of the layer made of MgO or the like as a raw material, it is necessary to review the raw material itself for forming the layer. I needed it. Disclosure of the invention
  • An object of the present invention is to reconsider the shape of a contact surface of a layer made of MgO or the like having secondary electron emission characteristics with plasma, without reconsidering the raw material having secondary electron emission characteristics.
  • Layer which makes it possible to use the secondary electron emission characteristics of the layer more efficiently, thereby realizing a PDP device with high luminous efficiency and providing means that can reduce the plasma firing voltage. Is to do.
  • a plasma display apparatus comprising: means for generating plasma; means for generating visible light by the plasma; an electrode to which a voltage for generating the plasma is applied; and an insulating layer covering the electrode. 2.
  • a plasma display device comprising: an electrode to which a voltage for generating the plasma is applied; and an insulating layer covering the electrode, comprising: a protective layer covering the insulating layer; A plasma display device with an irregular surface on the plasma generation side.
  • the amplitude and the period of the concave shape on the plasma side surface of the protective layer are 0.1 [! !] to 100 [m].
  • FIG. 1 is a diagram showing a first embodiment of the present invention
  • FIG. 2 is an exploded perspective view showing a part of the structure of a plasma display panel of the present invention.
  • FIG. 4 is a cross-sectional view of the plasma display panel viewed from the direction of arrow D1 in FIG. 2, and FIG. 4 is a sectional view of the plasma display panel viewed from the direction of arrow D2 in FIG.
  • FIG. 5 is a cross-sectional view of a plasma display panel
  • FIG. 5 is a diagram showing an operation in one field period forming one image
  • FIG. 6 is a diagram showing a second embodiment of the present invention.
  • FIG. 7 is a diagram showing a first embodiment of the present invention
  • FIG. 7 is a diagram showing a first embodiment of the present invention
  • FIG. 8 is a diagram showing a second embodiment of the present invention
  • FIG. 9 is a diagram showing the present invention
  • FIG. 10 is a view showing another example of the first and second embodiments of the present invention
  • FIG. 10 is a view showing details of a protrusion of another example of the first and second embodiments of the present invention
  • FIG. 11 is a diagram showing details of a protrusion of another example of the first and second embodiments of the present invention.
  • FIG. 2 is an exploded view showing a part of the structure of a PDP device to which the present invention is applied. It is a perspective view, and on the lower surface of the front glass substrate 21 is a transparent common electrode (hereinafter referred to as X electrode) 2 2 — 1, 2 2 — 2 and a transparent independent electrode (hereinafter referred to as Y electrode) 2 3 — 1, 2 3-2 is attached.
  • the X electrodes 2 2 — 1 and 2 2-2 and the Y electrodes 2 3 — 1 and 2 3 — 2 have the X bus electrodes 2 4 — 1 and 2 4 — 2 and the Y bus electrodes 2 5 — 1 and 2 2 5 — 2 is attached.
  • X electrode 2 2 — 1, 2 2 — 2, Y electrode 2 3 — 1, 2 3-2, X bus electrode 2 4 — 1, 2 4 — 2, Y bus electrode 2 5 — 1, 2 5- 2 is covered with a dielectric 26, and a protective layer 27 such as Mg0 is provided.
  • the protective layer 27 has a secondary electron emission characteristic by using the material such as Mg0, and the electrons in the plasma can be amplified by the secondary electrons. As a result, the power supplied from the drive circuit to the X electrodes 22-1 and 22-2. 2.
  • the Y electrodes 23-1 and 23-2 are more efficiently used for plasma generation. At the same time, it becomes possible to reduce the discharge starting voltage when the gas is turned into plasma.
  • an electrode 29 which is three-dimensionally orthogonal to 3-1, 1, 3-2 is attached, and the A electrode 29 is covered with a dielectric material 30, and the dielectric material 3 is provided.
  • a partition 31 is provided on 0 in parallel with the A electrode 29.
  • the phosphor 32 is applied to the inside of the portion sandwiching the A electrode 29 in the concave region formed by the wall surface of the partition wall 31 and the upper surface of the dielectric 30.
  • FIG. 3 is a cross-sectional view of the PDP apparatus viewed from the direction of arrow D1 in FIG. 2, and shows one cell which is the minimum unit of a pixel.
  • the A electrode 29 is located between the two partition walls 31 and generates plasma in the discharge space 33 surrounded by the front glass substrate 21 and the rear glass substrate 28, and the partition walls 31. Gas.
  • the discharge space 33 may be spatially separated by the partition 31, and a space may be provided between the partition 31 and the side of the discharge space of the front glass substrate 21. Sometimes it is continuous.
  • -Fig. 4 is a cross-sectional view of the PDP device viewed from the direction of arrow D2 in Fig. 2, and shows two cells. The boundaries of each cell are roughly indicated by dotted lines.
  • FIG. 5 is a diagram showing the operation in one field period required to display one image on the PDP device shown in FIG. 2, in which one field period (a) includes a plurality of sub-fields.
  • the subfields are divided into 41 to 48, and each subfield is composed of a preliminary discharge period 49, a write discharge period 50 defining a light emitting cell, and a light emitting display period 51 as shown in (b).
  • Waveform 52 is a voltage waveform applied to one A electrode during a writing / discharging period 50 according to the prior art
  • waveform 53 is a voltage waveform applied to the X electrode
  • 54, 55 are i electrodes of the Y electrode. These are the voltage waveforms applied to the (i + 1) th and (i + 1) th, respectively, where the voltages are VO, VI, and V2 (V).
  • FIG. 1 is a view showing a first embodiment of the present invention, and is a cross-sectional view of a PDP viewed from the same direction as FIG.
  • FIG. 6 is a view showing a second embodiment of the present invention, and is a cross-sectional view of the PDP apparatus viewed from the same direction as FIG.
  • the unevenness is provided on the surface of the dielectric material 26, but the second embodiment shown in FIG. Then, the surface of the dielectric 26 is formed into a planar shape, and the surface of the protective layer 27 facing the discharge space 33 is formed into an uneven shape.
  • the secondary electron emission characteristics of the protective layer 27 can be used more effectively, and the efficiency of using the power supplied from the drive circuit can be improved. Is improved. Further, it is also possible to reduce the discharge starting voltage when the gas is turned into plasma at the same time.
  • FIG. 7 is a view showing an example of the first embodiment of the present invention, and is a perspective view in which the surface of the protective layer 27 facing the discharge space 33 is faced up.
  • irregularities formed by linear grooves are provided on the surface of the dielectric 26 that is in contact with the protective layer 27, and the uniform thickness and uniformity of the irregularities on the surface of the dielectric 26 are obtained.
  • a protective layer 27 is formed as needed.
  • the surface of the protective layer 27 facing the discharge space 33 can be made uneven, and the protective layer 27 This makes it possible to more effectively use the secondary electron emission characteristics possessed by the device, thereby improving the efficiency of using the power supplied from the drive circuit.
  • the discharge starting voltage when the gas is turned into plasma can be reduced.
  • the example shown in FIG. 7 can be realized by forming a linear groove on the surface of the dielectric 26 that is in contact with the protective layer 27, so that there is an advantage that the implementation is easy.
  • FIG. 8 is a diagram showing an example of the second embodiment of the present invention, and is a perspective view in which the surface of the protective layer 27 facing the discharge space 33 is faced up.
  • the surface of the dielectric 26 in contact with the protective layer 27 has a planar shape, and the protective layer 27 having unevenness is provided linearly on the dielectric 26.
  • the surface of the protective layer 27 facing the discharge space 33 can be made uneven, so that the secondary electron emission characteristics of the protective layer 27 can be used more effectively.
  • the utilization efficiency of the power supplied from the circuit is improved.
  • the discharge starting voltage when the gas is turned into plasma can be reduced.
  • FIG. 9 is a diagram showing another example of the first and second embodiments of the present invention, and is a perspective view in which the surface of the protective layer 27 facing the discharge space 33 is faced up.
  • the unevenness of the surface of the protective layer 27 facing the discharge space 33 is formed as a projection.
  • the surface area of the protective layer 27 facing the discharge space 33 is further increased. Becomes possible. This makes it possible to more effectively use the secondary electron emission characteristics of the protective layer 27 as compared with the first embodiment of the present invention and the second embodiment of the present invention. From the drive circuit The utilization efficiency of the supplied power is further improved. At the same time, the discharge starting voltage when the gas is turned into plasma can be further reduced.
  • FIG. 10 is a diagram showing details of a protrusion of another example of the first and second embodiments of the present invention, and shows a cut surface taken along the plane indicated by S in FIG.
  • the protrusion of the surface of the protective layer 27 facing the discharge space 33 has a uniform thickness along the shape of the surface of the dielectric 26 in contact with the protective layer 27. 7 is formed.
  • FIG. 11 is a diagram showing details of a protrusion of another example of the first and second embodiments of the present invention, and shows a cross section taken along the plane indicated by S in FIG.
  • the protruding shape of the surface of the protective layer 27 facing the discharge space 33 is formed by providing the protruding protective layer 27 on the surface of the planar dielectric 26.
  • this can be realized, for example, by using particles having a difference in size as the material particles of the protective layer 27.
  • the amplitude and period of the uneven shape will be described. It is desirable that the amplitude and the period of the irregular shape of the surface of the protective layer 27 facing the discharge space 33 be larger than the mean free path of the ions and smaller than the width of the discharge electrode.
  • the mean free path of ions is 0.1 [! ! ! ] To about 1 [ ⁇ m].
  • the width of the discharge electrode is 10 [/ n! ] To about 100 [/ m].
  • the amplitude and the period of the uneven shape on the surface of the protective layer 27 facing the discharge space 33 are 0.1 [n! ] To about 100 [/ m]. Especially 1 [ ⁇ II! ] To 10 [m] is optimal.
  • the raw material itself having secondary electron emission characteristics is reviewed without this, the secondary electron emission characteristics of the layer that isolates the plasma can be used more efficiently. As a result, a PDP device with high luminous efficiency can be realized, and at the same time, the plasma firing voltage can be reduced.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Gas-Filled Discharge Tubes (AREA)

Abstract

L'invention concerne un écran à plasma dont l'efficacité d'émission est élevée et dans lequel la tension de départ de décharge du plasma est faible. L'écran est muni d'un dispositif de production de plasma, d'un dispositif qui produit une lumière visible à partir du plasma, d'une électrode à laquelle est appliquée une certaine tension afin de produire le plasma, et d'une couche isolante couvrant l'électrode. La surface du côté générant le plasma de la couche isolante est une surface présentant des aspérités.
PCT/JP1997/000932 1997-03-21 1997-03-21 Ecran a plasma WO1998043270A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/000932 WO1998043270A1 (fr) 1997-03-21 1997-03-21 Ecran a plasma

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/000932 WO1998043270A1 (fr) 1997-03-21 1997-03-21 Ecran a plasma

Publications (1)

Publication Number Publication Date
WO1998043270A1 true WO1998043270A1 (fr) 1998-10-01

Family

ID=14180272

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/000932 WO1998043270A1 (fr) 1997-03-21 1997-03-21 Ecran a plasma

Country Status (1)

Country Link
WO (1) WO1998043270A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831709A1 (fr) * 2001-10-29 2003-05-02 Thomson Licensing Sa Dalle de panneau a plasma comprenant des moyens pour re-diffuser les rayonnements emis par les decharges
US7557506B2 (en) 2005-08-31 2009-07-07 Samsung Sdi Co., Ltd. Plasma display panel
US7781968B2 (en) 2006-03-28 2010-08-24 Samsung Sdi Co., Ltd. Plasma display panel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965180A (fr) * 1972-10-24 1974-06-24
JPH0737510A (ja) * 1993-07-26 1995-02-07 Fujitsu Ltd プラズマディスプレイパネル
JPH0877931A (ja) * 1994-09-02 1996-03-22 Oki Electric Ind Co Ltd ガス放電パネルの保護膜及びその形成方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965180A (fr) * 1972-10-24 1974-06-24
JPH0737510A (ja) * 1993-07-26 1995-02-07 Fujitsu Ltd プラズマディスプレイパネル
JPH0877931A (ja) * 1994-09-02 1996-03-22 Oki Electric Ind Co Ltd ガス放電パネルの保護膜及びその形成方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831709A1 (fr) * 2001-10-29 2003-05-02 Thomson Licensing Sa Dalle de panneau a plasma comprenant des moyens pour re-diffuser les rayonnements emis par les decharges
WO2003038853A1 (fr) * 2001-10-29 2003-05-08 Thomson Licensing S.A. Dalle de panneau a plasma comprenant des moyens pour re-dif fuser les rayonnements uv
JP2005507550A (ja) * 2001-10-29 2005-03-17 トムソン　ライセンシング　ソシエテ　アノニム 放電によって放射された放射線を後方散乱させるための手段を含むプラズマディスプレイパネル
CN1307675C (zh) * 2001-10-29 2007-03-28 汤姆森许可贸易公司 包括uv辐射重散射装置的等离子体板面板
US7550923B2 (en) 2001-10-29 2009-06-23 Thomson Licensing Plasma panel faceplate comprising UV radiation re-scattering means
US7557506B2 (en) 2005-08-31 2009-07-07 Samsung Sdi Co., Ltd. Plasma display panel
US7781968B2 (en) 2006-03-28 2010-08-24 Samsung Sdi Co., Ltd. Plasma display panel

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