WO2005059944A1 - プラズマディスプレイ装置およびその製造方法 - Google Patents
プラズマディスプレイ装置およびその製造方法 Download PDFInfo
- Publication number
- WO2005059944A1 WO2005059944A1 PCT/JP2004/018550 JP2004018550W WO2005059944A1 WO 2005059944 A1 WO2005059944 A1 WO 2005059944A1 JP 2004018550 W JP2004018550 W JP 2004018550W WO 2005059944 A1 WO2005059944 A1 WO 2005059944A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- phosphor
- plasma display
- green
- phosphor layer
- display device
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/77922—Silicates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon
- C09K11/592—Chalcogenides
- C09K11/595—Chalcogenides with zinc or cadmium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7734—Aluminates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/77342—Silicates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7784—Chalcogenides
- C09K11/7787—Oxides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7797—Borates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/54—Screens on or from which an image or pattern is formed, picked-up, converted, or stored; Luminescent coatings on vessels
- H01J1/62—Luminescent screens; Selection of materials for luminescent coatings on vessels
- H01J1/63—Luminescent screens; Selection of materials for luminescent coatings on vessels characterised by the luminescent material
-
- 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
- H01J11/42—Fluorescent layers
Definitions
- Plasma display device and method of manufacturing the same
- the present invention relates to a plasma display device used for displaying an image on a television or the like, and a method for manufacturing the same.
- the plasma display device performs full-color display by additively mixing so-called three primary colors (red, green, and blue).
- the plasma display device includes a phosphor layer that emits each of the three primary colors red (R), green (G), and blue (B).
- the body particles are excited by ultraviolet rays generated in the discharge cells of the PDP to generate visible light of each color.
- each of these phosphors As a method for producing each of these phosphors, an example in which predetermined raw materials are mixed and then baked at a high temperature of 1000 ° C or more to cause a solid-phase reaction is produced. “Phosphor Handbook” (P219, 225 Ohmsha IJ). In addition, the phosphor particles obtained by the firing are sintered by the firing, and thus are crushed and sieved (average particle diameter of red and green phosphor particles: 2 xm 5 xm, blue phosphor). Average particle size: 3 ⁇ m-10 ⁇ m) before use.
- the phosphor particles are manufactured by pulverization, so that stress is applied to the surface of the phosphor particles to generate strain, and many defects such as so-called oxygen defects are generated. These defects absorb moisture in the atmosphere during the panel manufacturing process, and when the temperature rises when sealing the panel, moisture and phosphor
- the reaction in the panel deteriorates the brightness of the phosphor
- the defect absorbs the ultraviolet ray having a wavelength of 147 nm generated by the discharge and impedes the excitation of the emission center.
- moisture reacts with MgO as a protective film in the panel to cause an address discharge error.
- ZnSi ⁇ : Mn phosphors suffer from ion bombardment during discharge and, as a result, have a problem that the luminance deteriorates greatly and it is not possible to obtain sufficiently high luminance.
- Zn SiO: Mn has a problem that since the phosphor itself is negatively charged, the charging tendency is different from that of a red phosphor or a blue phosphor, and a discharge error easily occurs. Disclosure
- a plasma display device comprising a plasma display panel which emits light by being excited, wherein a phosphor layer comprises a green phosphor layer and a green phosphor layer comprises (M Eu Tb) ⁇ . MgO'2Si ⁇ (provided that M includes a green phosphor represented by at least one of Ca, Sr, and Ba).
- a plasma display device including a green phosphor that is not easily deteriorated in luminance during a panel manufacturing process.
- FIG. 1 is a plan view of a PDP used in a plasma display device according to an embodiment of the present invention, in which a front glass substrate is removed.
- FIG. 2 is a perspective view showing a structure of an image display area of a PDP used in a plasma display device according to one embodiment of the present invention.
- FIG. 3 is a block diagram of a plasma display device according to one embodiment of the present invention.
- FIG. 4 is a cross-sectional view showing a structure of an image display area of a PDP used in the plasma display device according to one embodiment of the present invention.
- FIG. 5 is a diagram showing a PDP used in a plasma display device according to an embodiment of the present invention.
- FIG. 2 is a schematic configuration diagram of an ink application device used when forming a phosphor layer. Explanation of reference numerals
- At least one kind of phosphor is produced by an aqueous solution synthesis method, a hydrothermal synthesis method, a spray synthesis method, or a hydrolysis synthesis method in which substantially spherical particles are easily obtained. That is, even if a phosphor precursor is prepared from the phosphor raw material, and the precursor is heat-treated at a high temperature of 1000 ° C to 1400 ° C and sintered, the phosphor precursor has a substantially spherical shape. Therefore, the particles hardly coalesce during sintering, and a phosphor having a substantially spherical shape can be obtained.
- the term “substantially spherical shape” is defined such that the axis diameter ratio (short axis diameter / long axis diameter) of most phosphor particles is, for example, 0.9 or more and 1.0 or less. It is not necessary that all of the phosphor particles fall within this range.
- the phosphor is not required to be pulverized, a phosphor with few defects and high luminance can be obtained. Also, like conventional ZnSi ⁇ : Mn, ZnO is Since it is not included during the formation, even if it is fired at a high temperature of 1000 ° C to 1400 ° C, there is no deviation in the composition of the phosphor, which prevents specific raw materials from sublimating selectively. Therefore, it is possible to obtain a green phosphor having good life characteristics.
- the phosphor formed by the production method according to the present invention has a small particle size, a uniform particle size distribution, and good crystallinity.
- the packing density of body particles is improved. Therefore, the emission area of the phosphor particles substantially contributing to light emission is increased, and deterioration due to discharge is small. Therefore, high brightness can be obtained even when the discharge space is narrow as in a PDP displaying a high-definition image.
- This phosphor raw material is dissolved in an aqueous medium to prepare a hydrated mixture (mixture preparation step).
- the hydration mixture is bubbled using O (oxygen), ⁇ (ozone) or O-N (oxygen-nitrogen) while applying ultrasonic waves, and the alkaline (basic) aqueous solution is washed with oxygen.
- a hydrate which is a precursor of the phosphor, is prepared by mixing (a hydrate preparation step).
- the solution containing the phosphor precursor obtained in the hydrate preparation step is heat-treated in air at a temperature of 700 ° C to 900 ° C to obtain a phosphor precursor powder (heat treatment). Process). Thereafter, the phosphor precursor powder is fired in a reducing atmosphere at a temperature of 1000 ° C. to 1400 ° C. (firing step), whereby a green phosphor that is a substantially spherical powder can be produced. .
- the spray synthesis method will be described.
- the mixed liquid preparation step and the hydrate preparation step described in the aqueous solution synthesis method are performed.
- droplets of an alkaline aqueous solution containing the phosphor precursor obtained in the hydrate preparation step are sprayed into a furnace heated to a temperature of 1000 ° C to 1500 ° C (spraying step).
- the phosphor powder is fired at a temperature of 1000 ° C. to 1400 ° C. in a reducing atmosphere to produce a green phosphor, which is a substantially spherical powder.
- the hydrothermal synthesis method will be described.
- the mixed liquid preparation step and the hydrate preparation step described in the aqueous solution synthesis method are performed. After that, an alkaline aqueous solution containing the phosphor precursor obtained in the hydrate preparation step is placed in a high-pressure vessel, and a pressure of 0.2 MPa lOMPa is applied at a temperature of 100 ° C to 300 ° C to perform a hydrothermal synthesis reaction. (Hydrothermal synthesis step) to produce a phosphor precursor powder. Thereafter, by firing the precursor powder of the phosphor at a temperature of 1000 ° C. to 1400 ° C. in a reducing atmosphere, a green phosphor as a substantially spherical powder can be produced.
- An organic compound (metal acetylacetone, metal alkoxide) containing each element of Ca, Sr, Ba, Mg, Si, Eu and Tb is used as a phosphor material.
- This phosphor raw material is mixed with alcohol and water, and a phosphor precursor is produced from the mixture using a hydrolysis reaction.
- the phosphor precursor is heat-treated at a temperature of 700 ° C. to 900 ° C. to obtain a phosphor precursor powder.
- a green phosphor as a substantially spherical powder can be produced.
- the precursor of the phosphor has a substantially spherical shape. Therefore, the green phosphor particles obtained from the precursor also have a substantially spherical shape, a small particle size of 0.05 / m-3 ⁇ , and a good particle size distribution. Therefore, the packing density of the phosphor particles forming the phosphor layer is improved, and the emission area of the phosphor particles that substantially contributes to light emission is increased.
- the discharge space volume of the PDP is one-third that of the conventional one and the force is one-third the thickness of the phosphor, the brightness of the plasma display device is improved and the deterioration of the brightness is suppressed.
- a plasma display device having excellent luminance characteristics can be obtained.
- Eu Tb Green represented by 0-MgO-2SiO (M is at least one of Ca, Ba and Sr) a_x- y x y 2
- the average particle diameter of the phosphor particles of the green phosphor is preferably in the range of 0.1 ⁇ m to 3 ⁇ m.
- the maximum particle size is preferably 8 xm or less
- the minimum particle size is preferably 1Z4 or more of the average particle size.
- the region of the phosphor particles that the ultraviolet rays reach is the particle surface It emits light only on the surface, which is as shallow as several hundred nm from the surface. Therefore, when the average particle diameter of the phosphor particles becomes 3 ⁇ m or less, the surface area of the particles contributing to light emission increases, and the luminous efficiency of the phosphor is kept high.
- the average particle size of the phosphor particles exceeds 3 ⁇ 3 ⁇ , the thickness of the phosphor layer needs to be larger than 20 ⁇ m, and a sufficient discharge space cannot be secured.
- the average particle size of the phosphor particles is smaller than 0.1xm, defects are likely to occur, and the luminance does not improve.
- FIG. 1 is a schematic plan view of PDP 100 with front glass substrate 101 removed
- FIG. 2 is a perspective view showing a part of PDP 100 in image display area 123 shown in FIG.
- the numbers of the display electrodes 103, the display scan electrodes 104, and the address electrodes 107 are partially omitted for easy understanding.
- the structure of the PDP 100 will be described with reference to FIGS.
- the PDP 100 includes a front glass substrate 101 (not shown), a rear glass substrate 102, N display electrodes 103, and N display scan electrodes 104 (n-th When shown, the number n is shown in parentheses), M address electrodes 107 (when the m-th line is shown, the number m is shown in parentheses), and an airtight seal layer 121 shown by oblique lines.
- the PDP 100 has a front panel in which a display electrode 103, a display scan electrode 104, a dielectric glass layer 105, and a protective layer 106 are provided on one main surface of a front glass substrate 101,
- a discharge gas made of, for example, neon (Ne) and xenon (Xe) is sealed in a discharge space 122 formed between the front panel and the rear panel.
- FIG. 3 is a block diagram of a plasma display device according to an embodiment of the present invention.
- the plasma display device 160 is configured by connecting a PDP driving device 150 to a PDP 100.
- the PDP driving device 150 controls a display driver circuit 153 for driving the display electrode 103, a display scan driver circuit 154 for driving the display scan electrode 104, an address driver circuit 155 for driving the address electrode 107, and these circuits. It is configured by the controller 152.
- the address discharge is performed between the display scan electrode 104 and the address electrode 107 by applying a pulse voltage to the display scan electrode 104 and the address electrode 107 in the discharge cell to be lit according to the control of the controller 152.
- a sustain voltage is generated by applying a pulse voltage between the display electrode 103 and the display scan electrode 104.
- Ultraviolet rays are generated in the discharge cells by the sustain discharge, and the phosphor layers excited by the ultraviolet rays emit light, so that the discharge cells are turned on. In this way, an image is displayed by a combination of lighting and non-lighting of the discharge cells on which the phosphor layers of each color are formed.
- N display electrodes 103 and display scan electrodes 104 are alternately and parallelly striped on a front glass substrate 101. Then, a dielectric glass layer 105 is formed so as to cover the display electrode 103 and the display scan electrode 104, and a protective layer 106 is formed on the surface of the dielectric glass layer 105.
- the display electrode 103 and the display scan electrode 104 are electrodes composed of a transparent electrode that acts as an ITO (indium tin oxide) and a bus electrode made of a metal material such as silver.
- a transparent electrode that acts as an ITO (indium tin oxide)
- a bus electrode made of a metal material such as silver.
- an IT film is formed on substantially the entire surface of the front glass substrate 101 by a sputtering method, and then patterned to form a transparent electrode having a predetermined pattern (striped shape). It is formed by applying silver paste by screen printing and baking.
- the dielectric glass layer 105 is formed by applying a paste containing a lead-based glass material by screen printing, and then baking it at a predetermined temperature and a predetermined time (for example, at 560 ° C for 20 minutes) to obtain a predetermined thickness of the layer. (About 20 ⁇ m).
- a paste containing lead-based glass material are, for example, PbO (70 wt%), B ⁇ (15 wt%), SiO (10 wt%), and Al O (5 wt%).
- an organic binder is used.
- the organic binder is obtained by dissolving a resin in an organic solvent, for example, by dissolving 10% of ethyl cellulose in ⁇ -turbineol.
- an acrylic resin as a resin and butyl carbitol as an organic solvent can be used.
- such an organic binder may be mixed with, for example, darisel trioleate as a dispersant.
- the protective layer 106 is made of magnesium oxide (Mg ⁇ ), and is formed to have a predetermined thickness (about 0.5 zm) by, for example, a sputtering method or a CVD method (chemical vapor deposition method).
- a silver paste for an electrode is screen-printed on a back glass substrate 102 and then fired, whereby M address electrodes 107 are formed.
- a paste containing a lead-based glass material is applied by a screen printing method so as to cover the address electrode 107 to form a dielectric glass layer 108, and a paste containing the same lead-based glass material is also applied by a screen printing method.
- the coating is repeatedly applied at a predetermined pitch, followed by baking to form the partition walls 109.
- the partition 109 divides the discharge space 122 into one discharge cell (unit light emitting region) in a direction parallel to the display electrode 103 and the display scan electrode 104.
- FIG. 4 is a partial cross-sectional view of PDP 100.
- the gap dimension of the partition wall 109 is set to about 130 ⁇ m to 240 ⁇ m in accordance with the HD-TV of ⁇ 2 inches and 50 inches.
- paste phosphor ink composed of red (R), green (G), and blue (B) phosphor particles and an organic binder is applied to the groove between the partitions 109. This is fired at a temperature of 400 ° C. to 590 ° C. to burn off the organic binder, thereby forming a red phosphor layer 110R, a green phosphor layer 110G, and a blue phosphor layer 110B composed of phosphor particles.
- the thickness L of the red phosphor layer 110R, the green phosphor layer 110G, and the blue phosphor layer 110B in the stacking direction on the address electrode 107 is approximately 8 to 25 times the average particle size of the phosphor particles of each color. It is desirable to form it to such an extent. That is, in order to ensure the luminance (luminous efficiency) when the phosphor layer is irradiated with a certain amount of ultraviolet rays, at least eight layers of phosphor particles, preferably 20 layers, are used so as not to transmit the ultraviolet rays generated in the discharge space. It is desirable to keep the thickness of the stacked layers. On the other hand, if the thickness of the phosphor particles exceeds 25 layers, This is because the luminous efficiency of the optical layer is almost saturated and the size of the discharge space 122 cannot be sufficiently secured.
- the particle size is sufficiently small and substantially reduced.
- the degree of filling of the phosphor particles is increased even when the number of layers is the same, as compared with the case of using particles that are not substantially spherical. Therefore, since the total surface area of the phosphor particles increases, the surface area of the phosphor particles contributing to actual light emission in the phosphor layer increases, and the luminous efficiency further increases.
- the front panel and the rear panel manufactured as described above are overlapped so that the display electrode 103 and the display scan electrode 104 on the front panel and the address electrode 107 on the rear panel are orthogonal to each other.
- sealing is performed by forming a hermetic seal layer 121 (FIG. 1) by baking at about 450 ° C. for 10 minutes to 20 minutes with a sealing glass interposed at the periphery of the panel.
- a high vacuum e.g., 1 ⁇ 1 X 10- 4 Pa
- evacuating the discharge gas for example, Ne, Vietnam Xe-based, He-Xe based inert gas
- a predetermined pressure PDP100 is produced by encapsulating with.
- FIG. 5 is a schematic configuration diagram of an ink coating device used for forming the red phosphor layer 110R, the green phosphor layer 110G, and the blue phosphor layer 110B.
- the ink application device 200 includes a server 210, a pressure pump 220, a header 230, and the like.
- the phosphor ink supplied from the server 210 that stores the phosphor ink is a calo-pressure pump.
- the pressure is supplied to the header 230 by 220 and supplied.
- the header 230 is provided with an ink chamber 230a and a nozzle 240, and the phosphor ink pressurized and supplied to the ink chamber 230a is continuously discharged from the nozzle 240.
- the diameter D of this nozzle 240 should be 30 zm or more to prevent clogging of the nozzle, and less than the distance W (about 130 ⁇ m 240 ⁇ m) between the partition 109 to prevent it from protruding from the partition during coating. It is usually set to 30 ⁇ m-130 ⁇ m.
- the header 230 is configured to be linearly driven by a header running mechanism (not shown), and scans the header 230 and continuously discharges the phosphor ink 250 to form a back surface.
- Phosphor ink is applied to the groove between the partition walls 109 on the glass substrate 102. Uniformly applied.
- the viscosity of the phosphor ink used is kept in the range of 1500 CP to 30000 CP (centipoise) at 25 ° C.
- the server 210 is provided with a stirrer (not shown), and the stirring action prevents precipitation of the phosphor particles in the phosphor ink.
- the header 230 is integrally formed including the ink chamber 230a and the nozzle 240, and is manufactured by machining and discharging a metal material.
- the method for forming the phosphor layer is not limited to the above method, and examples thereof include a photolithography method, a screen printing method, and a method of disposing a film in which phosphor particles are mixed. Various methods can be used.
- the phosphor ink is prepared by mixing phosphor particles of each color, a binder, and a solvent so as to be 1500 CP to 30000 CP. If necessary, a surfactant, silica, a dispersant (0 lwt% -5wt%).
- the red phosphor prepared in this phosphor ink includes (Y, Gd) BO: Eu or (
- the blue phosphor is represented by BaMgAl ⁇ : Eu or BaSrMgAlO: Eu.
- a compound having l-x1017x1-x-yy1017x is used.
- Green phosphors include (M Eu Tb) 0-MgO-2SiO (M is Ca, Sr, and Ba
- At least one compound) is used, and a part of the M (Ca, Sr, Ba) element constituting the base material is replaced with Eu or Tb in order to obtain green light emission.
- Ethyl cellulose or an acrylic resin is used as a binder to be mixed with the phosphor ink (mixture of 0.1% to 10% by weight of the phosphor ink), and ⁇ -turbineol, butyl carba Bitol can be used.
- a polymer such as ⁇ (polymethyl acrylate) or PVA (polyvinyl alcohol) can be used as a binder, and an organic solvent such as diethylene glycol or methyl ether can be used as a solvent.
- phosphors produced by an aqueous solution synthesis method, a hydrothermal synthesis method, a spray synthesis method, or a hydrolysis synthesis method are used. The method will be described below.
- This phosphor is represented by aCaO'xEuO'yTbO.Mg0-2SiO when the above-mentioned phosphor composition is represented by a chemical formula.
- a 2
- F: 1: 2:: (& 2, 0.02 ⁇ x ⁇ 0.2, 0 ⁇ y ⁇ 0.05), dissolve this in an aqueous medium and mix it (water (A mixed liquid).
- aqueous medium ion-exchanged water and pure water are preferable because they do not contain impurities, but they can be used even if they contain a non-aqueous solvent (methanol, ethanol, etc.).
- an alkaline (basic) solution eg, potassium hydroxide
- a spherical hydrate a precursor of a phosphor
- This is placed in a container made of a material having corrosion resistance and heat resistance such as gold or platinum, and a hydrothermal synthesis reaction is performed using a device capable of heating under pressure, such as an autoclave.
- a hydrothermal synthesis reaction aluminum or graphite powder is added as a reducing agent under the conditions of a predetermined temperature (for example, 100 ° C to 300 ° C) and a predetermined pressure (for example, 0.2 MPa to lOMPa) in a high-pressure vessel.
- the treatment is performed for 12 hours to 20 hours to produce a substantially spherical phosphor precursor powder.
- a spray synthesis method for producing a precursor powder of a substantially spherical phosphor may be used.
- the phosphor precursor powder is placed in a reducing atmosphere (for example, an atmosphere containing 5% of hydrogen and 95% of nitrogen) at a predetermined temperature for a predetermined time (for example, 800 ° C. and 1400 ° C. for 2 hours). ) And then classified to obtain the desired green phosphor (Ca Eu Tb) 0 -MgO-
- a reducing atmosphere for example, an atmosphere containing 5% of hydrogen and 95% of nitrogen
- Ba (N ⁇ ) may be used instead of barium nitrate.
- the phosphor particles obtained by using the hydrothermal synthesis method or the spray synthesis method have a substantially spherical shape and a particle size as compared with those produced by a conventional solid phase reaction. It is formed small.
- this phosphor is a (Ca, Sr, Ba) 0-xEuO-yTbO-MgO-2SiO.
- (Ca, Sr, Ba) ⁇ in the above chemical formula means that
- Phosphor raw materials include calcium alkoxide Ca (O'R) and strontium alkoxy.
- the molar ratio of Mg ( ⁇ 'R) is 1, the molar ratio of Si (O'R) is 2, and the molar ratio of Eu (O'R) is
- the ratio of 243 is x, and the molar ratio of Tb ( ⁇ 'R) is y. And the alkyl group mixed as above
- a substantially spherical precursor obtained by hydrolysis is fired at 900 ° C to 1300 ° C.
- this is calcined in a reducing atmosphere, for example, an atmosphere of 5% hydrogen and 95% nitrogen at a predetermined temperature for a predetermined time (for example, 2 hours at 1000 ° C and 1400 ° C), and then classified by an air classifier.
- a reducing atmosphere for example, an atmosphere of 5% hydrogen and 95% nitrogen at a predetermined temperature for a predetermined time (for example, 2 hours at 1000 ° C and 1400 ° C)
- the value of a of Ca, Sr, and Ba can be arbitrarily selected from 1, 2, and 3, and in each case, the parent crystal structure does not change much.
- the deterioration of the temperature characteristics of the phosphor that is, the deterioration of the phosphor characteristics with respect to the temperature history during the PDP manufacturing process, becomes smaller as a becomes larger.
- the firing temperature in the firing step in the above-described various synthesis methods needs to be higher as the value of a is larger. Therefore, the value of a can be arbitrarily selected depending on the phosphor production process conditions and the PDP production process conditions.
- Ca, Sr, and Ba may be used alone or as a mixture thereof.
- the deterioration of the phosphor characteristics with respect to the temperature history is the smallest in Ba.
- the next smallest is Sr, with the largest degradation of Ca. Therefore, it is possible to arbitrarily select these materials and their selection depending on the PDP manufacturing process conditions.
- a spherical phosphor precursor is prepared from an aqueous solution of these phosphor raw materials.
- the hydrothermal synthesis reaction was carried out at a temperature of 100 ° C-300 ° C and a pressure of 0.2MPa-lOMPa, and the obtained product was then obtained.
- a basic aqueous solution for example, an aqueous ammonia solution
- a basic aqueous solution for example, an aqueous ammonia solution
- this hydrate and ion-exchanged water are treated with platinum or gold or the like.
- a specified temperature eg, 100 ° C-300 ° C
- a specified pressure eg, 0.2MPa-10MPa
- the hydrothermal synthesis reaction is performed for a predetermined time (for example, 3 to 12 hours).
- the phosphor obtained by the hydrothermal synthesis step has a particle size of about Ozm and a spherical shape.
- this is heat-treated in air at 800 ° C and 1200 ° C for 2 hours, and then classified to obtain a red phosphor.
- a basic aqueous solution for example, an aqueous ammonia solution
- a basic aqueous solution for example, an aqueous ammonia solution
- the hydrate and ion-exchanged water are placed in a container made of a material having corrosion resistance and heat resistance, such as platinum or gold, and are placed in a high-pressure container using, for example, autoclave.
- a container made of a material having corrosion resistance and heat resistance such as platinum or gold
- the obtained compound is dried, and the desired (Y) O: E
- this phosphor is subjected to annealing treatment in air at 800 ° C. to 1200 ° C. for 2 hours, and then classified to obtain a red phosphor.
- the phosphor obtained by this hydrothermal synthesis step has a particle size of about 0.1 / m-2.O / m and has a spherical shape. This particle size and shape are suitable for forming a phosphor layer having excellent light emission characteristics.
- Each of the above phosphor particles is generated by a hydrothermal synthesis method, a spray synthesis method, or a hydrolysis method using a spherical precursor synthesized in an aqueous solution. It is formed into particles with a small shape and a small particle size (average particle size is about 0.0 ⁇ m).
- the phosphor particles produced using a spherical precursor compared to the conventional solid-phase reaction method in which a solid-phase reaction is performed can suppress coalescence due to fusion of the phosphor particles in the firing step.
- the particle size distribution becomes uniform.
- nitric acid compounds and hydroxide compounds were used as starting materials, other compounds such as metal alkoxides M (OR) acetylacetone M (C
- red phosphor layer 110R, green phosphor layer 110G, and blue phosphor layer 110B of the PDP 100 used phosphor particles produced by a hydrothermal synthesis method for all phosphor layers.
- a phosphor layer equivalent to that of the hydrothermal synthesis method can be prepared by using the aqueous synthesis method or the spray synthesis method.
- the conventional green phosphor having a ZnSiO: Mn structure is particularly different from other phosphors.
- the color temperature of white display has been improved by lowering the luminance of a discharge cell in which phosphors (red and blue) other than green are formed in a circuit.
- (M Eu Tb a ⁇ x-y x y) produced by the production method according to the present invention (a method of preparing a phosphor precursor in an aqueous solution).
- a green phosphor represented by 0 -MgO -2SiO (M is at least one of Ca, Sr and Ba)
- the brightness of the green discharge cells is increased, and it is not necessary to intentionally lower the brightness of the red and blue discharge cells. Therefore, since the brightness of the discharge cells of all colors can be used to the maximum, the brightness of the plasma display device can be increased while maintaining the color temperature of white display at a high level.
- the discharge gas sealed in the discharge space is a gas mainly composed of neon (Ne) mixed with 10% xenon (Xe) gas, and is sealed at a discharge gas pressure of 73 kPa.
- Each color phosphor used in the plasma display device as an example was produced using a spherical precursor produced by an aqueous solution synthesis method, a hydrothermal synthesis method, a spray synthesis method or a hydrolysis synthesis method.
- Green phosphor (M Eu Tb) 0 ⁇ MgO ⁇ 2SiO (M is Ca, Sr, Ba
- a is 1, 2 or 3 and Ba MgAl ⁇ : E u or Ba Sr MgAl Eu: Use Eu, as red phosphor (Y, Gd) B ⁇ : Eu or x 1 x-yy 10 17 x 1-x 3 x or (Y) ⁇ : Use Eu Was.
- the phosphor ink used was prepared by mixing a phosphor, a resin, a solvent, and a dispersant at a mixing ratio shown in the present embodiment.
- the viscosity 25 ° C
- the viscosity was maintained in the range of 1500 CP to 30000 CP in all cases.
- the phosphor ink was uniformly applied to the partition wall surfaces, and the thickness of the phosphor layers was 20 ⁇ m.
- Each of the color phosphors used in the plasma display device as a comparative example uses (Y) O: Eu (average particle size: 2 ⁇ m) produced by a hydrothermal synthesis method as a red phosphor and a blue phosphor.
- a phosphor layer (thickness: 20 ⁇ m ) was formed using phosphor ink under the same conditions as in the plasma display device as an example.
- the luminance change rate of the green phosphor in the panel sealing step (temperature: 450 ° C.) in the panel manufacturing step was measured.
- the rate of change in luminance during the accelerated life test of the panel, the presence or absence of address errors during address discharge, and the panel luminance during full green lighting were measured.
- the luminance change rate of the green phosphor in the panel sealing step was measured as follows. That is, after the phosphor layer is formed, a part of the back glass substrate before panel sealing is cut into a predetermined size (for example, about 20 mm ⁇ 10 mm). Thereafter, panel sealing is performed using the rear glass substrate from which a part has been cut out, and a part of the rear glass substrate after the panel sealing has been cut into a predetermined size (for example, about 20 mm ⁇ 10 mm). Then, the back glass substrate piece cut out before and after panel sealing is set in a vacuum chamber, and irradiated with an excimer lamp (vacuum ultraviolet ray 146 nm) to emit light from the phosphor layer. By measuring the light emission with a luminance meter, the luminance change rate rl was obtained from the luminance of the green component before and after sealing the panel by the following equation.
- BG0 is the luminance of the green component before panel sealing
- BG1 is the green component after panel sealing. This is the luminance of the color component.
- the panel luminance of the plasma display device was measured by applying a discharge sustaining pulse having a voltage of 150 V and a frequency of 30 kHz to the panel and lighting only the green discharge cells.
- the accelerated life test is performed by applying a sustaining pulse of 200 V and a frequency of 100 kHz to the plasma display device continuously for 100 hours.
- the panel luminance before and after the test was measured, and the luminance change rate r2 was obtained from the panel luminance by the following equation.
- BO is the panel luminance before the accelerated life test is performed
- B1 is the panel luminance after the accelerated life test is performed.
- an image is judged based on whether or not there is flicker by looking at the image.
- Table 1 shows the composition and synthesis conditions of the phosphors of each color when ⁇ 2, Sr, and Ba are used), and Table 2 shows the experimental measurement results.
- Table 3 shows the composition and synthesis conditions of each color phosphor when M is at least one of Ca, Sr, and Ba), and Table 4 shows the measurement results of each experiment. Furthermore, as a green phosphor (M Eu), as a green phosphor (M Eu
- Each color when using Tb) 0-MgO-2SiO (M is at least one of Ca, Sr and Ba)
- Table 5 shows the composition of the phosphor and the synthesis conditions.
- Table 6 shows the measurement results of each experiment.
- Sample No. 30 in Tables 1, 3 and 5 is the above-mentioned comparative example, and sample Nos. 1-4 in Table 1, Sample Nos. 11-19 in Table 3 and Sample Nos. 21-25 in Table 5.
- the item “luminance change rate rl” is the luminance change rate rl of the green phosphor in the panel sealing step described above
- the item “brightness change rate r2” is the panel The luminance change rate r2 when the accelerated life test was performed.
- Sample No. 30 is a comparative example
- Sample No. 30 is a comparative example [0092] [Table 5]
- Sample No. 30 is a comparative example
- the luminance change rate rl in the panel sealing step was 12.7%, indicating that the panel was subjected to the accelerated life test.
- the luminance change rate r2 was -14.1%.
- there was an address error at the time of address discharge and the panel luminance B at the time of full green lighting showed a value of 275 cd / m 2 .
- green full lighting time of the panel luminance B showed a value of more than across the board saw 300 cd / m 2.
- the luminance change rate rl in the panel sealing process is -1.0% -1.5. /.
- the luminance change rate r2 when performing the accelerated life test of the panel is-0. 5% -1.5%.
- the panel brightness B when the green full lighting showed values above eaves par 300 cd / m 2.
- the luminance change rate rl in the panel sealing process is -0.5% -1.0. /.
- the luminance change rate r2 when the panel was subjected to the accelerated life test was ⁇ 0.7-1.1%.
- an address error at the time of an address discharge was strong.
- the luminance change rate rl in the panel sealing process is 1.1% -1.1%, and the luminance change rate r2 in the accelerated life test of the panel is 0.8-1.1%. Met. There was no address error at the time of address discharge. In addition, no clogging of horns occurred while using the ink applicator for applying the phosphor ink for 200 hours.
- sample numbers 114, 11-19, 21-25 were more fully lit than the sample of the comparative example (sample number 30).
- the green phosphor according to the present invention was prepared by using a synthesis method in an aqueous solution, a hydrothermal synthesis method, a spray synthesis method, or a hydrolysis method (M Eu Tb) 0 -MgO -2SiO (where M is Ca a ⁇ x ⁇ yxy 2
- At least one of the phosphors has a structure, and relatively small phosphor particles (average particle size 0.1 ⁇ m 3.0 ⁇ m) are synthesized. Almost no grinding is required. Also, ZnO selectively scatters (sublimation) like conventional Zn SiO: Mn
- the suppression of the occurrence of oxygen vacancies makes it difficult for crystallinity to start from the oxygen vacancies, and in particular the suppression of green luminance degradation and the reduction of oxygen vacancies. It is considered that the luminance is improved as compared with the related art, because the amount of the absorbed ultraviolet light is reduced, so that the excitation of the emission center is easily performed.
- the plasma display device of the present invention and the method of manufacturing the same, it is possible to provide a plasma display device provided with a green phosphor that is hardly deteriorated in luminance during the panel manufacturing process, It is useful for improving the brightness, life, and reliability of the device.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04806911A EP1589557A4 (en) | 2003-12-16 | 2004-12-13 | PLASMA SCREEN AND METHOD FOR MANUFACTURING THE SAME |
US10/545,208 US7396489B2 (en) | 2003-12-16 | 2004-12-13 | Plasma display device and method of manufacturing same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-417802 | 2003-12-16 | ||
JP2003417802 | 2003-12-16 | ||
JP2003424156 | 2003-12-22 | ||
JP2003-424156 | 2003-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005059944A1 true WO2005059944A1 (ja) | 2005-06-30 |
Family
ID=34703275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/018550 WO2005059944A1 (ja) | 2003-12-16 | 2004-12-13 | プラズマディスプレイ装置およびその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7396489B2 (ja) |
EP (1) | EP1589557A4 (ja) |
KR (1) | KR100712060B1 (ja) |
WO (1) | WO2005059944A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110001091A1 (en) * | 2006-06-28 | 2011-01-06 | Seoul Semiconductor Co., Ltd. | Phosphor, method for manufacturing the same, and light emitting diode |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20060073328A (ko) * | 2004-12-24 | 2006-06-28 | 엘지전자 주식회사 | 플라즈마 디스플레이 패널 및 그 제조방법 |
KR100697197B1 (ko) * | 2004-12-29 | 2007-03-21 | 엘지전자 주식회사 | 플라즈마 디스플레이 패널 |
JP2006286324A (ja) * | 2005-03-31 | 2006-10-19 | Fujitsu Hitachi Plasma Display Ltd | プラズマディスプレイパネル |
US11286422B2 (en) | 2014-06-30 | 2022-03-29 | Rhodia Operations | Suspension of a magnesium silicate, method for making same and use thereof as a phosphor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002332481A (ja) * | 2000-09-29 | 2002-11-22 | Sumitomo Chem Co Ltd | 真空紫外線励起発光素子用の蛍光体 |
JP2003142004A (ja) * | 2001-10-31 | 2003-05-16 | Hitachi Ltd | 発光装置及びこれを用いた表示装置 |
JP2003206480A (ja) * | 2001-10-23 | 2003-07-22 | Matsushita Electric Ind Co Ltd | プラズマディスプレイ装置 |
JP2003238954A (ja) * | 2002-02-18 | 2003-08-27 | Matsushita Electric Ind Co Ltd | プラズマディスプレイ装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3468810A (en) * | 1965-03-26 | 1969-09-23 | Matsushita Electronics Corp | Method of making terbium activated alkaline earth silicate phosphors |
US3523091A (en) * | 1967-10-27 | 1970-08-04 | Westinghouse Electric Corp | Lanthanum,yttrium silicate phosphors |
US3676361A (en) * | 1969-04-15 | 1972-07-11 | Gen Electric | Ternary alkaline-earth pyrosilicate luminescent materials activated with divalent europium |
JPS528992A (en) * | 1975-07-11 | 1977-01-24 | Hitachi Ltd | Fluorescent substance |
KR950003389B1 (ko) | 1992-05-28 | 1995-04-12 | 삼성전자 주식회사 | 화자 확인 시스템 |
KR0132282B1 (ko) * | 1993-11-11 | 1998-04-14 | 김판재 | 수열법에 의한 녹색 발광용 형광체의 제조방법 |
KR100496838B1 (ko) | 2000-09-18 | 2005-06-22 | 쟈트코 가부시키가이샤 | 자동 변속기용 변속 제어 시스템 |
US6802990B2 (en) | 2000-09-29 | 2004-10-12 | Sumitomo Chemical Company, Limited | Fluorescent substances for vacuum ultraviolet radiation excited light-emitting devices |
EP1353354A4 (en) * | 2001-10-23 | 2007-12-12 | Matsushita Electric Ind Co Ltd | PLASMA SCREEN COMPONENT |
TWI290329B (en) * | 2001-10-30 | 2007-11-21 | Hitachi Ltd | Plasma display device, luminescent device and image and information display system using the same |
KR100492521B1 (ko) * | 2002-04-22 | 2005-06-03 | 한국화학연구원 | 알루미네이트계 형광체 분말의 개선된 제조방법 |
-
2004
- 2004-12-13 WO PCT/JP2004/018550 patent/WO2005059944A1/ja active IP Right Grant
- 2004-12-13 US US10/545,208 patent/US7396489B2/en not_active Expired - Fee Related
- 2004-12-13 EP EP04806911A patent/EP1589557A4/en not_active Withdrawn
- 2004-12-13 KR KR1020057013605A patent/KR100712060B1/ko not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002332481A (ja) * | 2000-09-29 | 2002-11-22 | Sumitomo Chem Co Ltd | 真空紫外線励起発光素子用の蛍光体 |
JP2003206480A (ja) * | 2001-10-23 | 2003-07-22 | Matsushita Electric Ind Co Ltd | プラズマディスプレイ装置 |
JP2003142004A (ja) * | 2001-10-31 | 2003-05-16 | Hitachi Ltd | 発光装置及びこれを用いた表示装置 |
JP2003238954A (ja) * | 2002-02-18 | 2003-08-27 | Matsushita Electric Ind Co Ltd | プラズマディスプレイ装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1589557A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110001091A1 (en) * | 2006-06-28 | 2011-01-06 | Seoul Semiconductor Co., Ltd. | Phosphor, method for manufacturing the same, and light emitting diode |
US20110012507A1 (en) * | 2006-06-28 | 2011-01-20 | Seoul Semiconductor Co., Ltd. | Phosphor, method for manufacturing the same, and light emitting diode |
US8187498B2 (en) * | 2006-06-28 | 2012-05-29 | Seoul Semiconductor Co., Ltd. | Phosphor, method for manufacturing the same, and light emitting diode |
US8262936B2 (en) | 2006-06-28 | 2012-09-11 | Seoul Semiconductor Co., Ltd. | Phosphor, method for manufacturing the same, and light emitting diode |
Also Published As
Publication number | Publication date |
---|---|
EP1589557A4 (en) | 2007-11-21 |
KR20060018210A (ko) | 2006-02-28 |
US20060139241A1 (en) | 2006-06-29 |
KR100712060B1 (ko) | 2007-05-02 |
US7396489B2 (en) | 2008-07-08 |
EP1589557A1 (en) | 2005-10-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2003183650A (ja) | プラズマディスプレイ装置の製造方法 | |
JP2003183649A (ja) | プラズマディスプレイ装置 | |
JP2003336048A (ja) | プラズマディスプレイ装置 | |
JP4042372B2 (ja) | 蛍光体の製造方法 | |
JP4415578B2 (ja) | プラズマディスプレイ装置 | |
JP2003336061A (ja) | プラズマディスプレイ装置 | |
JP2003082344A (ja) | プラズマディスプレイ装置 | |
KR100716386B1 (ko) | 플라즈마 디스플레이 장치 | |
JP2003082345A (ja) | プラズマディスプレイ装置 | |
KR100716387B1 (ko) | 플라즈마 디스플레이 장치 | |
JP3988615B2 (ja) | プラズマディスプレイ装置 | |
JP4449389B2 (ja) | プラズマディスプレイ装置用蛍光体の製造方法 | |
JP2003238954A (ja) | プラズマディスプレイ装置 | |
JP2001187884A (ja) | 蛍光体の製造方法、プラズマディスプレイパネル表示装置、および蛍光灯 | |
KR100712060B1 (ko) | 플라즈마 디스플레이 장치 및 그 제조방법 | |
EP1480247B1 (en) | Plasma display | |
WO2001029147A1 (fr) | Procede de fabrication d'une matiere fluorescente, d'un dispositif d'affichage, notamment un ecran a plasma, ainsi que d'une lampe fluorescente | |
JP2003336047A (ja) | プラズマディスプレイ装置 | |
JP2003082342A (ja) | プラズマディスプレイ装置 | |
JP4415844B2 (ja) | プラズマディスプレイ装置およびその製造方法 | |
KR100554814B1 (ko) | 청색 형광체, 이의 제조 방법 및 이를 포함하는 플라즈마 디스플레이 장치 | |
JP2003041248A (ja) | プラズマディスプレイ装置 | |
JP2003213258A (ja) | プラズマディスプレイ装置 | |
JP2003336057A (ja) | プラズマディスプレイ装置 | |
JP2004067885A (ja) | プラズマディスプレイパネル |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020057013605 Country of ref document: KR |
|
ENP | Entry into the national phase |
Ref document number: 2006139241 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10545208 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20048046550 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004806911 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 2004806911 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020057013605 Country of ref document: KR |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 10545208 Country of ref document: US |
|
WWG | Wipo information: grant in national office |
Ref document number: 1020057013605 Country of ref document: KR |