EP1627407B1 - Plasmatafel mit zement-aufteilungsbarrieren - Google Patents
Plasmatafel mit zement-aufteilungsbarrieren Download PDFInfo
- Publication number
- EP1627407B1 EP1627407B1 EP04734527A EP04734527A EP1627407B1 EP 1627407 B1 EP1627407 B1 EP 1627407B1 EP 04734527 A EP04734527 A EP 04734527A EP 04734527 A EP04734527 A EP 04734527A EP 1627407 B1 EP1627407 B1 EP 1627407B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- barriers
- cement
- slab
- mineral
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000004888 barrier function Effects 0.000 title claims description 95
- 239000004568 cement Substances 0.000 title claims description 33
- 238000005192 partition Methods 0.000 title 1
- 239000011230 binding agent Substances 0.000 claims description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 14
- 239000011707 mineral Substances 0.000 claims description 14
- 239000012764 mineral filler Substances 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 150000004645 aluminates Chemical class 0.000 claims description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 2
- 239000000843 powder Substances 0.000 description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 238000010438 heat treatment Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 14
- 239000000203 mixture Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 9
- 239000011398 Portland cement Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000006703 hydration reaction Methods 0.000 description 7
- 238000005086 pumping Methods 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 235000013339 cereals Nutrition 0.000 description 5
- 238000007596 consolidation process Methods 0.000 description 5
- 238000007650 screen-printing Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 238000010348 incorporation Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000005662 Paraffin oil Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 229940116411 terpineol Drugs 0.000 description 3
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- HIGRAKVNKLCVCA-UHFFFAOYSA-N alumine Chemical compound C1=CC=[Al]C=C1 HIGRAKVNKLCVCA-UHFFFAOYSA-N 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 235000015927 pasta Nutrition 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000005361 soda-lime glass Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- -1 glycol ethers Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000005394 sealing glass Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- H01J11/20—Constructional details
- H01J11/34—Vessels, containers or parts thereof, e.g. substrates
- H01J11/36—Spacers, barriers, ribs, partitions or the like
-
- 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
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/241—Manufacture or joining of vessels, leading-in conductors or bases the vessel being for a flat panel display
- H01J9/242—Spacers between faceplate and backplate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
- H01J2211/20—Constructional details
- H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
- H01J2211/36—Spacers, barriers, ribs, partitions or the like
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
- H01J2211/20—Constructional details
- H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
- H01J2211/36—Spacers, barriers, ribs, partitions or the like
- H01J2211/366—Spacers, barriers, ribs, partitions or the like characterized by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2217/00—Gas-filled discharge tubes
- H01J2217/38—Cold-cathode tubes
- H01J2217/49—Display panels, e.g. not making use of alternating current
- H01J2217/492—Details
- H01J2217/49207—Electrodes
- H01J2217/4925—Mounting, supporting, spacing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2329/00—Electron emission display panels, e.g. field emission display panels
- H01J2329/86—Vessels
- H01J2329/8625—Spacing members
- H01J2329/864—Spacing members characterised by the material
Definitions
- the invention relates to a plasma panel comprising two slabs forming between them a sealed space which is filled with discharge gas and which is partitioned into discharge cells delimited between these slabs by barriers forming a network.
- Such a panel is generally used for viewing images.
- the cells are usually divided into rows and columns.
- the barriers generally extend at least between the columns, sometimes even between the lines.
- the height of the barriers generally corresponds to the distance between the slabs, so that the barriers also serve as spacers.
- the slopes of the barriers and one of the slabs are generally covered with phosphors capable of emitting visible light under the excitation of plasma discharges; by adapting the composition of the discharge gas, it is also possible to directly obtain visible light without phosphors.
- WO00 / 36625 discloses a manufacturing method in which the barriers are molded in a reverse polymer pattern made by photolithography; on page 8, lines 7 to 22, for making the barriers, the use of a molding paste comprising ceramic powders, glass frits, Portland cement or other metal oxide powders is described; the only example given at the end of the document precisely describes the use of a paste containing 40% by weight of cement (page 10, line 32) and paraffin oil as carrier fluid; after molding, the paraffin oil migrates into the photopolymerized material of the mold, thereby increasing the densification of the inorganic powder in the mold channels; a final heat treatment at 600 ° C makes it possible to eliminate the polymer from the mold and the paraffin oil, and to obtain the solidification, here by sintering, of the cement powder.
- An object of the invention is to limit the number of heat treatments necessary to obtain a sufficient consolidation of the barriers, and / or to lower the temperature, or even to avoid these heat treatments.
- the subject of the invention is a plasma panel comprising two slabs forming between them a sealed space which is filled with discharge gas and which is partitioned into discharge cells delimited between these slabs by barriers made of mineral material comprising a inorganic binder and a mineral filler, said inorganic binder being a hydraulic binder.
- the inorganic binder is in the hydrated state and aggregates the mineral filler. To obtain this hydrated state, as illustrated below, it is therefore necessary to use water in the manufacturing steps of the plasma panel. It is the hydraulic binder in the hydrated state which is responsible for the consolidation of the barriers, which aggregates the grains of the inorganic filler, contrary to the barriers described in WO00 / 36625 where the skilled person understands that the effect consolidation is obtained by sintering grains of cement powder (or ceramic powder) and where, given the high processing temperatures, the cement is no longer in the hydrated state.
- hydraulic binder a material which, when formed as a block from a powder, can be hardened by a hydration reaction: thus, by mixing a mineral filler powder adapted to a hydraulic binder powder, by forming this powder mixture for example by molding, the resulting form can be cured after hydration reaction.
- water is added to the powder mixture before pouring the liquid mixture into a mold; the addition of water is what is usually called a mixing operation.
- the cells in the panel are usually divided into rows and columns.
- the barriers generally extend at least between the columns, sometimes even between the lines, in which case the barriers form a two-dimensional network.
- the height of the barriers generally corresponds to the distance between the slabs.
- the slopes of the barriers and one of the slabs are generally covered with phosphors capable of emitting visible light under the excitation of plasma discharges; by adapting the composition of the discharge gas, it is also possible to directly obtain visible light without phosphors.
- Such a plasma panel generally comprises at least two electrode arrays arranged in such a way that each cell is traversed by an electrode of each array.
- each slab supports at least one array of electrodes, so that the electrodes of a network carried by a slab cross the electrodes of a network carried by the other slab.
- At least one of the networks is covered by a dielectric layer, so as to provide a memory effect that facilitates control of the panel.
- Electrodes for triggering discharges do not include electrodes for triggering discharges; then microwave radiation is used to trigger the discharges; a single network of electrodes can nevertheless be used in this case for the addressing of the discharges.
- the hydraulic binder is a cement, for example based on aluminates or aluminosilicates.
- the weight proportion of inorganic filler in the inorganic material of the barriers is greater than or equal to 50%.
- the inorganic filler comprises more than 50% by weight of silica and / or alumina.
- the porosity of the barriers is greater than or equal to about 15%, preferably greater than 25%.
- Each of the cells thus delimited by these barriers has a rectangular shape of approximately 850 ⁇ m x 290 ⁇ m.
- the barrier paste is then applied to the slab, here by serigraphy of six superimposed layers; each screen printing pass is followed by drying at 110 ° C .; a slab is then obtained with a green barrier layer 150 ⁇ m thick.
- a denser screen printing cloth for example 90 threads / cm, and a less viscous paste, for example of the order of 20 Pa.s, are used to obtain underlays. superficial smoothing at the surface of the barrier layer.
- the slab is coated with this roller paste ("roller-coater" in English) and the layer applied is dried in a continuous-tunnel tunnel furnace provided with means for blowing and extracting air; a single pass then makes it possible to apply the 150 ⁇ m thick raw layer.
- an abrasive material is projected onto the mask using a linear slit nozzle of length 200 mm; as abrasive material, use is made of a metal powder marketed by FUJI Company, referenced S9 grade 1000; during the so-called "sanding" projection operation, the sanding nozzle is kept at approximately 10 cm from the slab, moves along the barriers to be formed at a speed of 50 mm / min. approximately, and the raw slab during sanding moves in a direction perpendicular to that of the barriers at the speed of 70 mm / min. ; the sanding pressure is of the order of 0.04 MPa; the flow rate of metal powder is about 2500 g / min.
- the mask On the top of the green barriers thus formed, the mask is then removed by spraying an aqueous solution at 35 ° C containing 1% sodium hydroxide (NaOH); after rinsing with water and air knife drying at 50 ° C, a slab is obtained with a network of green barriers of height of the order of 150 ⁇ m, width of about 100 ⁇ m at the base and 70 ⁇ m at the top. These barriers comprise about 4% by weight of organic resin.
- a sealant paste is then deposited on the periphery of the rear slab thus obtained; this seal is here based on a fusible glass impasted in a cellulosic solution giving a viscosity of the order of 100 Pa.s.
- a heat treatment is then carried out in order to remove the organic binder from the barriers and the phosphor layers: first temperature rise at 10 ° C./min. up to 350 ° C and then first stage of 20 minutes at 350 ° C, second temperature rise at 10 ° C / min. up to 480 ° C, then second stage of 20min at 480 ° C, and finally lowering temperature to 10 ° C / min.
- the hardening treatment of the barriers is then carried out, a hardening which is obtained according to the invention by a hydration reaction of the cement which therefore requires the use of water at this stage of the process: after heat treatment, the slab obtained is scrolled under a spray of water for 30 minutes, then the slab is dried by air knife at room temperature, then by air knife at 105 ° C. According to an alternative hardening treatment, the slab is immersed in water for 6 hours. According to another variant of hardening treatment, the slab is placed under water vapor pressure under appropriate conditions of temperature and duration to obtain the hardening, ie setting, of the cement.
- a rear slab is obtained with a network of hardened barriers 3 coated with phosphor layers 4R, 4G, 4B.
- the heat treatment of the process which has just been described serves only to eliminate the organic binders and not to harden the barriers as in the prior art, it is advantageous to shorten the duration of this treatment, in particular by reducing the residence times. bearing or even increasing speeds rise in temperature in certain temperature ranges; using vitreous mineral binders as in the prior art, the required dwell times would have been in the order of 30 minutes, instead of 20 minutes here; the shortening of the heat treatment times, or even the lowering of the maximum temperatures during the treatment, have a significant economic advantage.
- the organic binder removal operation is combined with the hardening operation of the barriers: first temperature rise at 10 ° C./min. up to 350 ° C and first stage of 30 minutes at 350 ° C, passage of moist air obtained by bubbling air into a water tank maintained at 80 ° C, second temperature rise to 10 ° C / min. up to 480 ° C, then second stage of 30min at 480 ° C, and finally lowering temperature to 10 ° C / min up to 350 ° C, then passage to dry air until complete cooling of the slab.
- a conventional front slab 5 is assembled on the rear slab according to the invention (see the two arrows designating the assembly in FIG. 2), the two slabs are sealed by treatment. At 400 ° C., the air contained between the slabs was evacuated by pumping, the panel filled with discharge gas under low pressure, and the pumping opening was sealed.
- the front slab 5 conventionally comprises two coplanar electrode arrays X, Y.
- the plasma panel thus obtained shown in plan view in FIG. 1, comprises two slabs forming between them a sealed space which is filled with discharge gas and which is partitioned into discharge cells 6R, 6G, 6B delimited by the barriers. 3, which are, according to the invention, hardened mineral material, that is to say aggregated, by a hydraulic binder which is in the hydrated state.
- the plasma panel thus obtained has good mechanical properties, particularly at the level of the barriers: no crushing of the barriers is observed.
- a mineral material of barriers based on Portland cement instead of using a mineral material of barriers based on Portland cement, it is possible to use a mineral material further comprising a mineral filler, such as alumina or silica, or any other material compatible with the manufacture and operation of a plasma panel.
- a mineral filler such as alumina or silica, or any other material compatible with the manufacture and operation of a plasma panel.
- the hydration of the hydraulic binder therefore serves, according to the invention, to aggregate this mineral filler.
- a mixture of 50% of the previously described cement and 50% of silica powder is used; as silica, there is for example a silica cristobalite type whose specific surface area is less than 10 m 2 / g and whose average particle size is less than 10 microns, typically of the order of 5 microns; for example, the reference M4000 of the Sifraco Company is chosen.
- the barriers obtained also have good mechanical properties; thanks to the high porosity of the barriers, it greatly reduces the pumping time required to evacuate the air contained between the slabs.
- a second family of methods of manufacturing a plasma panel according to the invention will now be described.
- this second family of processes there are no longer any organic resins in the raw layers of barriers, which makes it possible to completely avoid heat treatment at high temperature, at least at the level of the manufacture of the rear slab.
- the cells of the panel are rectangular.
- the assembly is then returned so that the gravity puts in support the mold and its barriers on the rear face;
- the set is then placed in an atmosphere at 40 ° C.
- the mold can be removed by removing the mold. This can then be cleaned with a high-pressure water jet.
- the slab coated with its underlayer and its barriers is stored for a further 4 hours in an atmosphere saturated with moisture to perfect the setting reaction of the cement and thus obtain a hydraulic binder in the hydrated state which aggregates the mineral filler of the barriers. and consolidates them. Then the slab is passed through a controlled passage oven at 115 ° C to remove the residual water.
- a suspension is prepared containing 70 g of phosphor powder dispersed in 130 g of a mixture of glycol ethers selected for their boiling point and their viscosity so as to obtain the temporary suspension of the phosphors without the use of resins. .
- Colloidal suspensions of silica (or others) can however be used as a thickener if necessary.
- a sealant paste is then deposited on the periphery of the rear slab thus obtained; this seal is here based on a glass with a very low melting point in a solution similar to that of phosphors giving a viscosity of about 80 Pa.s. It is then dried at 120 ° C.
- a conventional front slab is assembled on the rear slab according to the invention, the two slabs are sealed by heat treatment adapted to obtain at least partial melting of the sealing glass. evacuate the air contained between the slabs by pumping, the discharge gas panel is filled under low pressure, and the pumping opening is sealed.
- the plasma panel thus obtained has good mechanical properties, particularly at the level of the barriers: no crushing of the barriers is observed.
- the hydraulic binder of the barriers remained in the hydrated state despite the heat treatments.
- the method according to the second family of embodiments of the invention therefore makes it possible to produce plasma panel slabs which carry the barriers without ever exceeding 250 ° C., which is very advantageous economically and to maintain the barriers in the state hydrated according to the invention.
- a sealing gasket based on sealing glue resistant to a temperature of 250 ° C. available on the market, which makes it possible to seal the two slabs by heat treatment at only 250 ° C. VS ; in this case, thanks to the invention, none of the manufacturing steps of the panel exceeds 250 ° C, which makes it easier to maintain the hydraulic binder barriers in the hydrated state, which advantageously limits any risk of degradation of the mechanical properties of the hydraulic binder of the barriers.
- cements which, after setting, can withstand the temperatures of the treatments thermal still necessary for the manufacture of the panel; other types of hydraulic binders than cement are usable without departing from the invention.
- the present invention applies to any type of plasma panel whose cells are compartmentalized by barriers; these plasma panels may be coplanar type, matrix type, or radiofrequency excitation or microwave.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Gas-Filled Discharge Tubes (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Building Environments (AREA)
Claims (7)
- Plasmapaneel mit zwei Platten, die zwischen sich einen dichten Zwischenraum einschließen, der mit Entladungsgas gefüllt ist und in Entladungszellen (6R, 6G, 6B) aufgeteilt ist, die zwischen diesen Platten durch Barrieren (3) aus einem mineralischen Material begrenzt sind, das ein mineralisches Bindemittel und einen mineralischen Füllstoff enthält, wobei das mineralische Bindemittel ein hydraulisches Bindemittel ist, dadurch gekennzeichnet, dass das mineralische Bindemittel im hydratisierten Zustand ist und den mineralischen Füllstoff aggregieren lässt.
- Paneel nach Anspruch 1, dadurch gekennzeichnet, dass das hydraulische Bindemittel ein Zement ist.
- Paneel nach Anspruch 2, dadurch gekennzeichnet, dass der Zement auf Basis von Aluminaten oder Aluminosilicaten ist.
- Paneel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Gewichtsanteil des mineralischen Füllstoffs in dem mineralischen Material größer als oder gleich 50 % ist.
- Paneel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der mineralische Füllstoff über 50 Gewichtsprozent Siliciumdioxid und/oder Aluminiumoxid enthält.
- Paneel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Porosität der Barrieren größer als oder gleich ca. 15 % ist.
- Paneel nach Anspruch 6, dadurch gekennzeichnet, dass die Porosität der Barrieren größer als 25 % ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0306383A FR2855644A1 (fr) | 2003-05-27 | 2003-05-27 | Panneau a plasma dont les barrieres de partionnement sont en ciment |
PCT/EP2004/050905 WO2004107381A2 (fr) | 2003-05-27 | 2004-05-24 | Panneau a plasma dont les barrieres de partionnement sont en ciment |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1627407A2 EP1627407A2 (de) | 2006-02-22 |
EP1627407B1 true EP1627407B1 (de) | 2007-03-14 |
Family
ID=33427455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04734527A Expired - Lifetime EP1627407B1 (de) | 2003-05-27 | 2004-05-24 | Plasmatafel mit zement-aufteilungsbarrieren |
Country Status (8)
Country | Link |
---|---|
US (1) | US7710033B2 (de) |
EP (1) | EP1627407B1 (de) |
JP (1) | JP4633726B2 (de) |
KR (1) | KR101026462B1 (de) |
CN (1) | CN100474488C (de) |
DE (1) | DE602004005328T2 (de) |
FR (1) | FR2855644A1 (de) |
WO (1) | WO2004107381A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009193748A (ja) * | 2008-02-13 | 2009-08-27 | Panasonic Corp | プラズマディスプレイパネル |
JP2009302518A (ja) * | 2008-05-13 | 2009-12-24 | Toto Ltd | 静電チャック |
US9792463B2 (en) | 2011-07-28 | 2017-10-17 | Kenneth L. Miller | Combination magnetic stripe and contactless chip card reader |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03151433A (ja) * | 1989-11-08 | 1991-06-27 | Denki Kagaku Kogyo Kk | 建設部材の補強方法 |
US5486126A (en) * | 1994-11-18 | 1996-01-23 | Micron Display Technology, Inc. | Spacers for large area displays |
US5704820A (en) * | 1995-01-31 | 1998-01-06 | Lucent Technologies Inc. | Method for making improved pillar structure for field emission devices |
JP3980735B2 (ja) * | 1998-02-04 | 2007-09-26 | 株式会社タイカ | ディスプレイパネル用基板の製造方法 |
JPH11283512A (ja) * | 1998-03-27 | 1999-10-15 | Kyocera Corp | プラズマ表示装置用基板及びその製造方法 |
JP2000021335A (ja) * | 1998-06-30 | 2000-01-21 | Toshiba Corp | パネル型真空気密容器 |
WO2000036625A1 (en) * | 1998-12-17 | 2000-06-22 | E.I. Du Pont De Nemours And Company | Barrier rib formation for plasma display panels |
US6620370B2 (en) * | 1998-12-21 | 2003-09-16 | Corning Incorporated | Method for manufacturing opaque rib structures for display panels |
FR2792454B1 (fr) * | 1999-04-15 | 2001-05-25 | Thomson Plasma | Procede de fabrication d'un panneau a plasma |
FR2818798B1 (fr) * | 2000-12-22 | 2003-02-21 | Thomson Multimedia Sa | Procede de fabrication d'un reseau de barrieres en materiau mineral sur une dalle pour panneau de visualisation a plasma |
US6637213B2 (en) * | 2001-01-19 | 2003-10-28 | Crane Plastics Company Llc | Cooling of extruded and compression molded materials |
AU2002317214A1 (en) * | 2001-06-29 | 2003-03-03 | Thomson Plasma | Plate for a plasma panel with reinforced porous barriers |
US7261771B2 (en) * | 2002-01-09 | 2007-08-28 | Nanostrata Inc. | Method of controlling the viscosity of a cementitious mixture using oppositely-charged polyelectrolytes |
-
2003
- 2003-05-27 FR FR0306383A patent/FR2855644A1/fr active Pending
-
2004
- 2004-05-24 WO PCT/EP2004/050905 patent/WO2004107381A2/fr active IP Right Grant
- 2004-05-24 KR KR1020057022485A patent/KR101026462B1/ko not_active IP Right Cessation
- 2004-05-24 DE DE602004005328T patent/DE602004005328T2/de not_active Expired - Lifetime
- 2004-05-24 US US10/558,009 patent/US7710033B2/en not_active Expired - Fee Related
- 2004-05-24 JP JP2006530217A patent/JP4633726B2/ja not_active Expired - Fee Related
- 2004-05-24 CN CNB2004800141146A patent/CN100474488C/zh not_active Expired - Fee Related
- 2004-05-24 EP EP04734527A patent/EP1627407B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1627407A2 (de) | 2006-02-22 |
CN100474488C (zh) | 2009-04-01 |
KR20060007438A (ko) | 2006-01-24 |
FR2855644A1 (fr) | 2004-12-03 |
DE602004005328T2 (de) | 2007-12-20 |
CN1795524A (zh) | 2006-06-28 |
KR101026462B1 (ko) | 2011-04-01 |
WO2004107381A3 (fr) | 2005-02-10 |
JP2007523442A (ja) | 2007-08-16 |
WO2004107381A2 (fr) | 2004-12-09 |
JP4633726B2 (ja) | 2011-02-16 |
US7710033B2 (en) | 2010-05-04 |
US20070024203A1 (en) | 2007-02-01 |
DE602004005328D1 (de) | 2007-04-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3887337B1 (de) | Verfahren zur generativen fertigung eines anorganischen filterträgers aus einer schmelzmasse und resultierende membran | |
FR2738393A1 (fr) | Substrat d'affichage a plasma et procede pour sa fabrication | |
FR2788878A1 (fr) | Procede de fabrication d'un panneau d'affichage et dispositif d'affichage | |
EP1627407B1 (de) | Plasmatafel mit zement-aufteilungsbarrieren | |
US5941043A (en) | Large-format fireclay refractory brick and method for its production | |
FR2752849A1 (fr) | Procede de formation de couches fluorescentes, et pates et matiere fluorescentes correspondantes | |
EP1415316B1 (de) | Platte für plasmaschirm mit verstärkten porösen barrieren | |
US7473151B2 (en) | Method for manufacturing a substrate for a flat panel display including forming grooves in a surface | |
US6527606B1 (en) | Process for the manufacture of a plasma panel | |
EP1354331B1 (de) | Prozess zur herstellung von barrieren für eine plasma-anzeigetafel | |
EP1007483A1 (de) | Schmelzofen, insbesondere für glas, und seine verwendung | |
JP2007523442A6 (ja) | セメント分割隔壁を含むプラズマパネル | |
MXPA05012701A (en) | Plasma panel comprising cement partition barriers | |
FR2826776A1 (fr) | Procede de fabrication d'une dalle pour panneau a plasma dotee de barrieres formees par projection d'un materiau abrasif | |
WO2002058096A2 (fr) | Dalle arriere pour ecran de visualisation a plasma, procede de realisation et ecran la comportant | |
FR3079230A1 (fr) | Procede de fabrication additive de ceramique par voie liquide et dispositif pour la mise en œuvre dudit procede | |
FR2798509A1 (fr) | Melange pour realiser des electrodes et procede de formation d'electrodes sur un substrat transparent | |
Kim et al. | 42.1: Invited Paper: Cost Effective Technologies for Barrier Rib Processing of HD PDPs | |
FR2813431A1 (fr) | Procede de fabrication d'une dalle dotee d'un reseau de barrieres et application a la fabrication d'un panneau a plasma | |
CN102576801A (zh) | 修复压电构件中的缺陷 | |
FR2816754A1 (fr) | Panneau a plasma utilisant des poudres a grains creux dans sa structure | |
FR2857369A1 (fr) | Poudre luminescente | |
JPH0929638A (ja) | 厚膜パターン形成方法 | |
FR2787632A1 (fr) | Procede de fabrication d'un panneau d'affichage au plasma et panneau d'affichage au plasma realise par ledit procede | |
FR2857368A1 (fr) | Poudre luminescente |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20051121 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 602004005328 Country of ref document: DE Date of ref document: 20070426 Kind code of ref document: P |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20070405 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20071217 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20140527 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20140523 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20140516 Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602004005328 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20150524 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20160129 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150524 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150601 |