WO2010061425A1 - プラズマディスプレイパネルおよびその製造方法 - Google Patents
プラズマディスプレイパネルおよびその製造方法 Download PDFInfo
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- WO2010061425A1 WO2010061425A1 PCT/JP2008/003524 JP2008003524W WO2010061425A1 WO 2010061425 A1 WO2010061425 A1 WO 2010061425A1 JP 2008003524 W JP2008003524 W JP 2008003524W WO 2010061425 A1 WO2010061425 A1 WO 2010061425A1
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- 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
- H01J11/40—Layers for protecting or enhancing the electron emission, e.g. MgO layers
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- 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
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
Definitions
- the present invention relates to a display device, and more particularly to a configuration of a plasma display panel capable of reducing a discharge voltage and a manufacturing method thereof.
- the PDP display device includes a plasma display panel, a front panel disposed on the front surface of the plasma display panel, a drive circuit disposed on the back surface of the plasma display panel, and a frame that accommodates these.
- the scanning electrodes extend from the left end of the front substrate to the display area, for example, and the discharge sustaining electrodes extend from the right side of the front substrate to the display area, for example.
- address electrodes extend in a direction perpendicular to the scan electrodes and the discharge sustain electrodes.
- a subpixel is formed at the intersection of the scan electrode, the discharge sustain electrode, and the address electrode. Since the subpixels are formed in a matrix in the display area, an image can be formed.
- An image is formed by causing a discharge between the scan electrode and the discharge sustaining electrode formed on the front substrate and causing the phosphor formed on each subpixel to emit light, but between the scan electrode and the discharge sustaining electrode.
- a voltage of 180 V to 190 V is usually applied between the scan electrode and the discharge sustain electrode. Therefore, in order to prevent dielectric breakdown between the scan electrode and the discharge sustain electrode, a dielectric layer is formed to cover the scan electrode and the discharge sustain electrode.
- MgO having a large secondary electron emission coefficient ⁇ is coated on the dielectric layer as a protective film by about 1 ⁇ m.
- MgO is deliquescent, and when exposed to air, the surface is altered and becomes cloudy or the secondary electron emission coefficient is lowered.
- Patent Document 1 describes that a protective film is covered with a temporary protective film (hereinafter referred to as an inactive film) such as a SiO 2 film, and a plasma display. A configuration is described in which after the panel is completed, the inactive film near the electrode is removed by discharge.
- Patent Document 2 describes a configuration in which the barrier property against oxygen and water vapor is improved by using SiOx as an inert film and setting the value of x in the range of 1.3 to 1.9. .
- the protective film on the display substrate is required to have a high secondary electron emission coefficient in order to start and maintain discharge at a lower voltage.
- a magnesium oxide film is generally used as a protective film material.
- Magnesium oxide is a material that can withstand practical use.
- a material having a secondary electron emission coefficient exceeding that of magnesium oxide is required. ing.
- inert films are required to (1) be easily sputtered and (2) be able to completely block carbon dioxide and water vapor in the atmosphere from the underlying high ⁇ material (high barrier properties).
- An example of the material satisfying the property (1) is SiO 2.
- SiO 2 includes many defects structurally, the barrier property (2) is insufficient.
- Patent Document 2 As a method for improving such a barrier shortage of SiO 2 , there is “Patent Document 2”.
- this method has a problem that the barrier property is not sufficient and the x value is still difficult to control.
- An object of the present invention is to form an inert film having excellent sputtering characteristics and excellent barrier characteristics. Another object of the present invention is to realize a stable plasma display panel with a low discharge voltage.
- the present invention solves the above-described problems, and specific means are as follows.
- a front substrate on which a dielectric layer is formed to cover the first discharge electrode and the second discharge electrode, a protective film is formed to cover the dielectric layer, and a dielectric layer to cover the address electrode A plasma display panel formed by sealing a rear substrate having a partition wall formed on the dielectric layer and sealed by a sealing material formed on a periphery thereof, and a metal oxide on the protective film. An inactive film formed of metal is formed, and the inactive film is removed in a portion corresponding to the discharge electrode.
- the metal oxide is any one of SiO 2 , Al 2 O 3 , TiO 2 , MgO, and ZrO, and the metal is a rare earth metal such as Tb, La, Ce, Eu, Yb, Y, Sc. Or an alkaline earth metal such as Mg, Ca, Sr or Ba, or an alkali metal such as K or Na.
- a dielectric layer is formed to cover the first discharge electrode and the second discharge electrode, a protective film is formed to cover the dielectric layer, and an inert film is formed on the protective film.
- a method of manufacturing a plasma display panel wherein a front substrate and a rear substrate on which a dielectric layer is formed so as to cover the address electrodes and a partition wall is formed on the dielectric layer are sealed by a sealing material formed on the periphery
- the inert film is formed by simultaneously depositing a metal oxide and a metal by vapor deposition, and the inert film is removed from a portion exposed to plasma discharge in an aging process.
- a dielectric layer is formed covering the first discharge electrode and the second discharge electrode, a protective film is formed covering the dielectric layer, and an inert film is formed on the protective film.
- a method of manufacturing a plasma display panel wherein a front substrate and a rear substrate on which a dielectric layer is formed so as to cover the address electrodes and a partition wall is formed on the dielectric layer are sealed by a sealing material formed on the periphery
- the inert film is formed by simultaneously depositing a metal oxide and a metal by sputtering, and the inert film is removed from a portion exposed to plasma discharge in an aging process.
- an inert film having excellent barrier properties can be formed according to the present invention, SrO, CaO, BaO, or a mixture containing these, which has been difficult to use as a protective film in the past, is used as a protective film. Can be used. Since these films have a larger secondary electron emission coefficient than MgO, a plasma display panel with a low discharge voltage can be realized.
- FIG. 1 is an exploded perspective view of a display area of a plasma display panel.
- the plasma display panel is composed of two glass substrates, a front substrate 1 and a back substrate 2.
- a scanning electrode 20 hereinafter also referred to as a Y electrode 20
- a discharge sustaining electrode 10 hereinafter also referred to as an X electrode 10.
- the scan electrode 20 is further composed of a scan discharge electrode formed of ITO (Indium Tin Oxide) that actually becomes a discharge electrode, and a scan bus electrode that supplies a voltage from a terminal portion.
- the scan bus electrode is also referred to as Y bus electrode 22, and the scan discharge electrode is also referred to as Y discharge electrode 21.
- the Y electrode 20 includes the Y bus electrode 22 and the Y discharge electrode 21.
- the discharge sustaining electrode 10 further includes a discharge sustaining electrode 10 formed of ITO (Indium Tin Oxide) that actually becomes a discharge electrode, and a discharge sustaining bus electrode that supplies a voltage from a terminal portion.
- the discharge sustain bus electrode is also referred to as X bus electrode 12
- the discharge sustain electrode 10 is also referred to as X discharge electrode 11.
- the X electrode 10 includes the X bus electrode 12 and the X discharge electrode 11.
- the X bus electrode 12 and the Y bus electrode 22 both have a metal laminated structure, and have a laminated structure of chromium, copper, and chromium from the front substrate 1 side. Chromium formed on the front substrate 1 has excellent adhesion to glass, and has a black surface, which has an effect of improving contrast. Copper is used to reduce the resistance of the bus electrode. The chromium is further coated on the copper, but this chromium prevents the resistance of the copper surface from being changed due to oxidation.
- the chromium on the front glass may further have a laminated structure of chromium oxide and chromium. Since the chromium oxide is black and has a smaller reflectance than the chromium, the contrast of the image can be further improved. Chromium oxide also has excellent adhesion to glass. Moreover, since the contact surface with copper is chromium, copper is not oxidized.
- the discharge electrode uses ITO, which is a transparent conductive film
- the bus electrode uses a metal laminated film with low resistance. This is because when the transparent conductive film is used, more light emitted from the phosphor 8 can be extracted outside.
- the discharge electrode may be formed of the same metal as the bus electrode. In this case, the process is completed once and the manufacturing cost is greatly reduced.
- the dielectric layer 5 is formed so as to cover the X electrode 10 and the Y electrode 20.
- a low-melting glass having a softening point of about 500 ° C. is used for the dielectric layer 5.
- a protective film 6 is formed on the dielectric layer 5.
- the protective film 6 is mainly made of magnesium oxide (MgO) and is formed by sputtering or vapor deposition.
- MgO magnesium oxide
- SrO, CaO, BaO, or alloys thereof can be used in addition to MgO.
- an inert film is formed on the protective film 6 by vapor deposition or sputtering.
- This inert film 60 is a mixture of a SiO 2 film and a rare earth metal.
- the role of the inert film 60 is to protect the protective film 6 from oxygen and moisture in the atmosphere.
- This inactive film 60 is removed from the portion exposed to plasma discharge by sputtering during discharge in the aging process after the plasma display panel is completed. Since the inert film 60 needs to satisfy the condition of protecting the protective film 6 from the atmosphere and the condition of being easily removed by sputtering during discharge, the film thickness is selected to be 10 nm to 500 nm.
- a black belt may be formed outside the X electrode 10 and the Y electrode 20 in order to improve the contrast of the image. Since the black belt improves the contrast, it needs to be black.
- a metal laminated film having the same structure as that of the X electrode 10 or the Y electrode 20 is used for the black belt. Therefore, the black belt and the X electrode 10 or the Y electrode 20 can be formed simultaneously. Since the metal in contact with the front substrate 1 made of glass is Cr or CrO, it is black, and the contrast can be improved.
- An address electrode 30 (hereinafter also referred to as an A electrode) is formed on the rear substrate 2 so as to be orthogonal to the X bus electrode 12 or the Y bus electrode 22.
- the structure of the address electrode 30 is the same as that of the X bus electrode 12 or the Y bus electrode 22, and is a laminated structure of chromium, copper, and chromium.
- the dielectric layer 5 covers the address electrode 30.
- the same material as that of the dielectric layer 5 formed on the front substrate 1 is used for the dielectric layer 5 formed on the rear substrate 2.
- the partition wall 7 is formed to extend in the same direction as the address electrode 30 so as to sandwich the address electrode 30.
- horizontal barrier ribs 71 are formed in a direction perpendicular to the address electrodes 30, and subpixels (subpixels are also referred to as cells) are formed in a region surrounded by the barrier ribs 7 and the horizontal barrier ribs 71.
- a phosphor 8 is applied to the inside of the partition wall 7. The phosphor 8 is coated with red, green, and blue phosphors 8 in parallel in the recesses formed by the partition walls 7 in FIG.
- a space surrounded by the front substrate 1, the rear substrate 2, and the partition walls 7 is a discharge space for enclosing a discharge gas.
- a space between the pair of bus wirings and the partition wall 7 corresponds to one display cell (subpixel), and in the case of color display, three subpixels correspond to three primary colors (R, B, G), and one pixel (R, B, G). Pixel).
- the light emission principle of the plasma display panel is as follows. First, a voltage (discharge start voltage) of about 100 to 200 V is applied between the address electrode 30 corresponding to the cell to emit light and the scan electrode 20 corresponding to the cell. Since the address electrode 30 and the bus wiring are orthogonal to each other, a single cell at the intersection can be selected. In the selected cell, a weak discharge is generated between the discharge electrode to which a voltage is applied (in this case, the Y electrode 20) and the address electrode 30, and on the protective film 6 on the dielectric layer 5 on the front substrate 1 side. Charge (wall charge) is accumulated. In this way, writing by charges is performed on all cells in the display area. This period is a writing period, and no image is formed.
- the discharge sustain period (sustain period)
- a high frequency pulse is applied between the X electrode 10 and the Y electrode 20 to perform a sustain discharge.
- the sustain discharge is generated only in the cells in which the wall charges are accumulated.
- Ultraviolet rays are generated by the sustain discharge, and the phosphor 8 emits light by the ultraviolet rays. Visible light emitted from the phosphor 8 is emitted from the front substrate 1 and is visually recognized by a human. Since the phosphor 8 emits light only in the cells in which charges are accumulated during the writing period, an image is formed.
- FIG. 2 is a schematic sectional view showing the process of the present invention.
- FIG. 2 shows the front substrate 1 rotated 90 degrees in the horizontal direction for easy understanding of the process of the present invention. That is, as shown in FIG. 1, the X discharge electrodes 11 and the like and the address electrodes 30 originally extend in a right angle direction, but extend in parallel in FIG.
- an X discharge electrode 11, an X bus electrode 12, a Y discharge electrode 21, a Y bus electrode 22 and the like are formed on a front substrate 1, and a dielectric layer 5 is formed thereon with a thickness of 20 ⁇ m.
- a SrO + CaO material having a thickness of 1 ⁇ m is formed on the dielectric layer 5 by a vacuum deposition method to form a protective film 6.
- the inactive film 60 is formed by successively depositing a deposition base material in which the metal oxide SiO 2 and the metal Tb are mixed on the surface of the protective film 6.
- SiO 2 will be described as an example of the metal oxide.
- FIG. 4 is a schematic diagram showing a state in which SiO 2 and metal Tb are deposited.
- a vapor deposition base material in which SiO 2 and metal Tb are mixed is placed in a substrate hearth 200, and is heated and evaporated by an electron beam.
- the front substrate 1 formed up to the protective film 6 is set downward on the substrate setting jig 100, and a vapor deposition base material in which SiO 2 and metal Tb are mixed is vapor deposited.
- the front substrate 1 after the deposition is moved in the direction of the arrow and taken out to the outside.
- SrO + CaO has deliquescence, it is not deteriorated because it is covered with SiO 2 + Tb which is the inert film 60.
- the thickness of the inactive film 60 is small, the barrier property cannot be secured, and if it is large, the time for the subsequent discharge removing process increases.
- the lower limit film thickness at which the minimum barrier property is generated is approximately 10 ⁇ m, and the upper limit film thickness that can be accommodated in a practical removal process time is approximately 500 nm.
- the lower limit of the required metal mixing ratio is determined by the lower limit concentration at which the inert film 60 can have the required barrier properties, and the upper limit is such that the inert film 60 does not have conductivity that hinders discharge.
- the concentration is determined.
- the range of the metal concentration satisfying this condition is 0.5 mol% to 50 mol%.
- an address electrode 30 is formed on the back substrate 2, and a low melting point glass is formed thereon with a thickness of 10 ⁇ m to form a dielectric layer 5.
- a low melting point glass paste is formed and a dry film layer is laminated. The laminated dry film is exposed and developed, and the dry film layer is patterned. Sand blasting is performed using the patterned dry film as a mask to form a recess for the discharge space. Thereafter, the dry film is removed, and then fired to scatter the binder to form the partition walls 7.
- the phosphor 8 is formed in the recess surrounded by the partition wall 7. Further, a frit glass serving as a seal layer is applied to the rear substrate 2 with a dispenser or the like. Thereafter, the front substrate 1 and the back substrate 2 are combined and heated in a baking furnace to melt and solidify the frit glass as a sealing material.
- the inside is evacuated to about several Pa through the sealing tube, and then, for example, about 50 kPa of discharge gas of 10% Xe + Ne 90% is sealed, and the sealing tube is chipped off.
- FIG. 2B shows that an AC voltage for aging is applied between the X discharge electrode 11 and the Y discharge electrode 21 of the plasma display panel thus formed, and an aging discharge is generated between the discharge electrodes. It is a cross-sectional schematic diagram shown.
- FIG. 2C shows a state where the inactive film 60 has been removed in this way.
- the inactive film 60 is not completely removed from the protective film 6 but only from the portion corresponding to the discharge electrode. Further, most of the inactive film 60 removed by sputtering adheres to the structure including the removed inactive film 60 in the periphery, so that the discharge gas is not contaminated.
- the inactive film 60 is described as an example in which SiO 2 and Tb are simultaneously formed.
- the material of the inactive film 60 is not limited to this, and an oxide-metal mixed film in which SiO 2 and another metal are simultaneously formed can be used.
- metals that can be used in combination with SiO 2 include rare earth metals such as La, Ce, Eu, Yb, Y, Sc, alkaline earth metals such as Mg, Ca, Sr, Ba, Alkali metals such as K and Na can be used.
- SrO + CaO has been described as an example of the material of the protective film 6.
- the material of the protective film 6 is not limited to this, and BaO, MgO, or a mixture containing these can be used.
- MgO is most widely used as the protective film 6.
- the present invention for the MgO protective film 6 it is possible to prevent the deterioration of MgO and further reduce the variation in the discharge start voltage.
- SrO, CaO, BaO, or a mixture containing these which has a large secondary electron emission coefficient and excellent protective film 6 characteristics, is conventionally altered by oxygen, moisture, etc. in the atmosphere. Therefore, it can be used according to the present invention, and the discharge voltage of the plasma display panel can be reduced.
- FIG. 4 shows a method of forming the inactive film 60 according to this embodiment.
- SiO 2 mixed with Tb is placed in the substrate hearth 200 and heated by an electron beam to form a film.
- the SiO 2 film and Tb are disposed in separate hearts, and each is deposited by heating with an electron beam.
- SiO 2 and Tb have different vapor deposition rates, but in this embodiment, since the vapor deposition of SiO 2 and Tb can be controlled separately, the mixing ratio of the two types of vapor deposition components can be accurately controlled. .
- the front substrate 1 on which the inert film 60 is deposited moves in the direction of the arrow in FIG. 4 and is taken out into the atmosphere as in FIG. 3 of the first embodiment.
- the hearth on which SiO 2 is placed and the hearth on which Tb is placed are disposed in the vapor deposition chamber.
- rare earth metals such as La, Ce, Eu, Yb, Y, and Sc
- alkaline earth metals such as Mg, Ca, Sr, and Ba
- alkali metals such as K and Na
- the configuration of the plasma display panel formed in the present embodiment is the same as that of the plasma display panel formed in the first embodiment.
- the manufacturing method of the inactive film 60 is different from those in the first and second embodiments.
- vacuum deposition is used to form the inert film 60.
- the inert film 60 is formed by sputtering.
- FIG. 5 shows an example of a method for forming the inactive film 60 according to this embodiment.
- a sputtering target 300 in which Tb is embedded in a SiO 2 target is used.
- the sputtering method as shown in FIG. 5 it is possible to perform sputtering by placing a Tb piece on the SiO 2 target.
- SiO 2 and Tb sputtered from the sputtering target 300 are attached to the front substrate 1 set in the upper substrate setting jig 100.
- the front substrate 1 is arranged downward.
- the feature of the sputtering method is that, unlike FIG. 5, the substrate can be placed upright. That is, as shown in FIG. 5, when the substrate is installed horizontally, if the substrate becomes large, a phenomenon that the substrate bends occurs, and a mechanism for preventing this phenomenon is required.
- the sputtering target 300 is also arranged upright in parallel with the substrate.
- a SiO 2 target embedded with Tb is used as the sputtering target 300.
- rare earth metal SiO 2 targets such as La, Ce, Eu, Yb, Y and Sc
- alkaline earth metal SiO 2 targets such as Mg, Ca, Sr and Ba
- alkali metals such as K and Na SiO 2 target
- the SiO 2 film and the inactive film 60 of each metal can be formed.
- SiO 2 was taken as an example of the metal oxide.
- the metal oxide is not limited to SiO 2, and the present invention can be applied even in the case of Al 2 O 3 , TiO 2 , MgO, ZrO, or the like.
- Example 1 is an exploded perspective view of a plasma display panel according to the present invention. It is a schematic cross section which shows the process of this invention. It is the vapor deposition method by Example 1. It is the vapor deposition method by Example 2. This is an example of forming an inert film by sputtering.
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Claims (9)
- 第1の放電電極と第2の放電電極を覆って誘電体層が形成され、前記誘電体層を覆って保護膜が形成された前面基板と、アドレス電極を覆って誘電体層が形成され、前記誘電体層の上に隔壁が形成された背面基板とが、周辺に形成されたシール材によってシールされたプラズマディスプレイパネルであって、
前記保護膜の上には、金属酸化物と金属とによって形成される不活性膜が形成され、前記不活性膜は、プラズマ放電に曝される部分においては全部または一部が除去されていることを特徴とするプラズマディスプレイパネル。 - 前記金属酸化物の量をxとし、前記金属の量をyとした場合、y/(x+y)は0.5mol%~50mol%であることを特徴とする請求項1に記載のプラズマディスプレイパネル。
- 前記金属酸化物はSiO2、Al2O3、TiO2、MgO、ZrO
のいずれかであり、前記金属は、Tb、La、Ce、Eu,Yb、Y、Sc、または、Mg,Ca、Sr、Ba、または、K、Naであることを特徴とする請求項1に記載のプラズマディスプレイパネル。 - 前記保護膜は、MgO、SrO、CaO、BaO、あるいは、これらを含む混合物であることを特徴とする請求項1に記載のプラズマディスプレイパネル。
- 前記不活性膜の膜厚は10nm~500nmであることを特徴とする請求項1に記載のプラズマディスプレイパネル。
- 第1の放電電極と第2の放電電極を覆って誘電体層が形成され、前記誘電体層を覆って保護膜が形成され、前記保護膜の上に不活性膜が形成された前面基板と、アドレス電極を覆って誘電体層が形成され、前記誘電体層の上に隔壁が形成された背面基板とが、周辺に形成されたシール材によってシールされたプラズマディスプレイパネルの製造方法であって、
前記不活性膜は、金属酸化物と金属を蒸着によって同時成膜し、
前記不活性膜はエージング工程において、プラズマ放電に曝される部分の全部または一部において除去されていることを特徴とするプラズマディスプレイパネルの製造方法。 - 前記蒸着は金属酸化物と金属を同一のハースに載置した蒸着材料を電子ビーム加熱によって加熱することを特徴とする請求項6に記載のプラズマディスプレイパネルの製造方法。
- 前記蒸着は金属酸化物と金属を別々のハースに載置し、前記金属酸化物と前記金属を別々に加熱、制御することによって行われることを特徴とする請求項6に記載のプラズマディスプレイパネルの製造方法。
- 第1の放電電極と第2の放電電極を覆って誘電体層が形成され、前記誘電体層を覆って保護膜が形成され、前記保護膜の上に不活性膜が形成された前面基板と、アドレス電極を覆って誘電体層が形成され、前記誘電体層の上に隔壁が形成された背面基板とが、周辺に形成されたシール材によってシールされたプラズマディスプレイパネルの製造方法であって、
前記不活性膜は、金属酸化物と金属をスパッタリングによって同時成膜し、
前記不活性膜はエージング工程において、プラズマ放電に曝される部分の全部または一部において除去されることを特徴とするプラズマディスプレイパネルの製造方法。
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US8049423B2 (en) * | 2008-07-25 | 2011-11-01 | Samsung Sdi Co., Ltd. | Plasma display panel with improved luminance and low power consumption |
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- 2008-11-28 JP JP2010540234A patent/JP5113912B2/ja not_active Expired - Fee Related
- 2008-11-28 US US12/863,640 patent/US8692463B2/en not_active Expired - Fee Related
- 2008-11-28 WO PCT/JP2008/003524 patent/WO2010061425A1/ja active Application Filing
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WO2012124284A1 (ja) * | 2011-03-15 | 2012-09-20 | パナソニック株式会社 | プラズマディスプレイパネル |
Also Published As
Publication number | Publication date |
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JP5113912B2 (ja) | 2013-01-09 |
JPWO2010061425A1 (ja) | 2012-04-19 |
US8692463B2 (en) | 2014-04-08 |
US20100289726A1 (en) | 2010-11-18 |
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