CN103794442A - Plasma screen and manufacturing method thereof - Google Patents
Plasma screen and manufacturing method thereof Download PDFInfo
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- CN103794442A CN103794442A CN201110459535.1A CN201110459535A CN103794442A CN 103794442 A CN103794442 A CN 103794442A CN 201110459535 A CN201110459535 A CN 201110459535A CN 103794442 A CN103794442 A CN 103794442A
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Abstract
The invention relates to a plasma screen and a manufacturing method thereof. The plasma screen comprises a front panel and a back panel which are in relatively sealing connection, wherein the front panel comprises a glass substrate, an electrode material layer and a medium film layer which are sequentially arranged, the front panel further comprises a magnetic film layer arranged on the medium film layer; or a magnesium oxide film layer on the medium film layer, and a magnetic film layer arranged on the magnesium oxide film layer; or a magnesium oxide film layer arranged on the medium film layer, and the magnesium oxide film layer contains magnetic nanometer particles in a disperse distribution mode. According to the plasma screen, the magnetic film layer generates a local magnetic field, so a travel approach of carriers is influenced, a travel distance of the carriers is increased, and thereby light emitting efficiency of the display screen is improved.
Description
Technical field
The present invention relates to plasma display apparatus field, relate in particular to magnetic PDP display of a kind of tool and preparation method thereof.
Background technology
Plasm TV relies on its large-screen, high definition, with great visual angle and the advantage such as digitlization, come into more and more people's life, but compared with being similarly the LCD TV of ultra-thin television, plasm TV but exists the low shortcoming of brightness.The brightness of plasm TV and LCD TV is transferred to minimum and the highest simultaneously, the highest brightness value that records LCD TV can reach about every square metre of 800 candela, and plasm TV can only reach about every square metre of 200 candela, reason be LCD TV adopt be backlight, can improve brightness by multiple sets of light sources, and plasm TV is to rely on self luminous, so be difficult to brightness to improve, this display mode has just determined that plasm TV is lower than the brightness of LCD TV.
In order to meet the requirement of PDP display to brightness, in plasma display panel (PDP), prepare magnetic membrane material, to improving the efficiency of plasma display panel (PDP), reduce power consumption.In display screen, charge carrier accelerates under electric field action, be in higher energy state, falling back in low-energy state process, can emit ultraviolet ray (UV), by the different fluorescent material of UV deexcitation, and then from fluorescent material, emit versicolor light, but, because the traveling distance of charge carrier is short, collision efficiency is low, causes the luminous efficiency of display screen low.
Summary of the invention
The object of the present invention is to provide a kind of with low cost, technique is simple and the magnetic PDP display of tool and preparation method thereof.
For this reason, the invention provides a kind of PDP display, comprise front panel and the rear board of relative sealing-in, front panel comprises the glass substrate, electrode material layer and the dielectric film layer that sequentially arrange, it is characterized in that, front panel also comprises: (1) is arranged on the laminated magnetic film on dielectric film layer; Or (2) be arranged on the magnesia film layer on dielectric film layer, and be arranged on the laminated magnetic film on magnesia film layer; Or (3) be arranged on the magnesia film layer on dielectric film layer, wherein, in this magnesia film, contain the magnetic nano particle of tool that disperses distribution; Wherein, in (1) and (2), in laminated magnetic film, be rich in the nano particle that is magnetic.
Further, in the time that the structure of above-mentioned front panel is (1) or (2), the area of laminated magnetic film be dielectric film layer or magnesia film aspect long-pending below 50%.
Further, in the time that the structure of above-mentioned front panel is (3), the volume of the nano particle in magnesia film layer accounts for the 1%-60% of cumulative volume.
Further, above-mentioned nano particle comprises nano particle and the ferrite of metal nanoparticle, alloy material.
Further, above-mentioned metal is one or more in iron, nickel, cobalt group; Alloy material comprises AlNi, AlCo, FeCr, FeCo, FeCrMo, FeAlC, FeCoV and FeCoW; Ferritic main component is MO6Fe
2o
3, M represents Ba, Sr, Pb or SrCa, LaCa compounding ingredients.
Further, the granularity of above-mentioned nano particle is 20≤D≤300 nanometer.
Simultaneously, a kind of manufacture method of PDP display is also provided in the present invention, comprise and prepare respectively front panel and rear board, front panel and rear board are sealed, wherein, the step of preparing front panel comprises: glass substrate is set again, on glass substrate, form electrode material layer, on electrode material layer, form dielectric film layer, it is characterized in that, the step of preparing front panel also comprises: 1) on dielectric film layer, form laminated magnetic film; Or 2) on dielectric film layer, form magnesia film layer, and form laminated magnetic film on magnesia film layer; Or 3) magnetic nanoparticle is mixed and is dispersed in magnesium oxide particle, form hybrid particles, hybrid particles is arranged on and on dielectric film layer, forms magnesia film layer.
Further, employing mode 1) or 2) while preparing laminated magnetic film, further comprising the steps: magnetic material is ground into nano particle, and by nanoparticulate dispersed in solvent, form mixed solution A; Mixed solution A is sprayed on dielectric film layer or magnesia film layer to the dry rear laminated magnetic film that forms.
Further, employing mode 1) or 2) prepare laminated magnetic film, further comprising the steps: magnetic material to be ground into nano particle, and nano particle is mixed with organic carrier, form mixed slurry B; Mixed slurry B is printed on dielectric film layer or magnesia film layer, and sintering is removed organic carrier, forms laminated magnetic film.
Further, employing mode 3) prepare laminated magnetic film, further comprising the steps: magnetic material to be ground into nano particle, magnesium oxide particle is mixed with nano particle, form mixture C; Mixture C evaporation, to dielectric film layer, is formed to the magnetic diaphragm of tool.
The present invention forms laminated magnetic film by magnetic-particle is set on the front panel of plasma panel, the local magnetic field that laminated magnetic film produces, and then affect the approach of advancing of charge carrier, improve the traveling distance of charge carrier, make charge carrier in higher energy state, collision efficiency between charge carrier improves, charge carrier falls back to the increased frequency of low-energy state, emit more ultraviolet ray (UV), by the different fluorescent material of these UV deexcitations, from fluorescent material, emit how versicolor light, and then improved the luminous efficiency of display screen.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.
Embodiment
Below embodiments of the invention are elaborated, but following embodiment understands the present invention, and can not limit the present invention, the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
In a kind of exemplary embodiment of the present invention, this plasma panel comprises front panel and the rear board of relative sealing-in, front panel comprises the glass substrate, electrode material layer and the dielectric film layer that sequentially arrange, and front panel also comprises: (1) is arranged on the laminated magnetic film on dielectric film layer; Or (2) be arranged on the magnesia film layer on dielectric film layer, and be arranged on the laminated magnetic film on magnesia film layer; Or (3) be arranged on the magnesia film layer on dielectric film layer, wherein, in this magnesia film, contain the magnetic nano particle of tool that disperses distribution; Wherein, in (1) and (2), in laminated magnetic film, be rich in the nano particle that is magnetic.
The structure of the front panel of PDP display is not limited to above-mentioned three kinds of modes in the present invention, as long as magnetic nanoparticle is prepared on the front panel of PDP display, and forms the magnetic reflector of tool.On the front panel of plasma panel, magnetic-particle is set, the local magnetic field that the laminated magnetic film that these homodisperse magnetic-particles form produces, and then affect the approach of advancing of charge carrier, improve the traveling distance of charge carrier, make charge carrier in higher energy state, collision efficiency between charge carrier improves, charge carrier falls back to the increased frequency of low-energy state, emit more ultraviolet ray, by the different fluorescent material of these ultraviolet deexcitations, from fluorescent material, emit how versicolor light, and then improved the luminous efficiency of display screen.
Above-mentioned dielectric film layer can adopt any to be usually used in the dielectric film layer of plasma panel.Preferably adopt low glass powder dielectric film layer, this low glass powder dielectric film layer is also well-known to those skilled in the art, does not repeat them here.
Above-mentioned MgO protective layer layer is protective film conventional in prior art; be not limited in the present invention use MgO protective layer layer; in practical operation, when employing can replace other protective film of MgO protective layer layer use, also belong to protection scope of the present invention.
Preferably, in the time that the structure of the front panel of above-mentioned PDP display is (1) or (2), while namely magnetic nanoparticle preparation being formed to laminated magnetic film on the surface of dielectric film layer or magnesia film layer; The area of the laminated magnetic film forming account for dielectric film layer or magnesia film aspect long-pending below 50%.Such area coverage is conducive to guarantee that visible transmission goes out, and then guarantees the transmitance of visible ray, and the brightness of PDP screen.
Preferably, in the time that the structure of above-mentioned PDP display front panel is (3), namely magnetic nanoparticle is mixed to be dispersed in magnesia film layer, forming the magnetic magnesia film layer of tool.The volume of the magnetic nanoparticle in magnesia film layer accounts for the 1%-60% of magnesia film layer cumulative volume.Prepared like this magnesia film layer, in can uv reflectance, be beneficial to the ejaculation of guaranteeing that visible ray is saturating, and then guarantees the transmitance of visible ray, and the brightness of PDP screen.
In a kind of concrete execution mode of the present invention, above-mentioned nano particle comprises nano particle and the ferrite of metal nanoparticle, alloy material.Preferably, metal includes but not limited to one or more in iron, nickel, cobalt group; Alloy material includes but not limited to AlNi, AlCo, FeCr, FeCo, FeCrMo, FeAlC, FeCoV and FeCoW; Ferritic main component is MO6Fe
2o
3, M includes but not limited to Ba, Sr, Pb or SrCa, LaCa compounding ingredients.As long as nano particle used has magnetic, and can prepare form nano particle just can be for the preparation of plasma panel of the present invention.
In the present invention, the particle size range of above-mentioned nano material can, at 1～400nm, be easy to disperse as long as can realize.Preferably, the granularity of above-mentioned nano particle is 20≤D≤300 nanometer.It is 20≤D≤300 nanometer that the granularity of nano particle is pulverized, and is conducive to see through the visible ray that wave-length coverage is 400nm-800nm, and then guarantees the transmitance of visible ray, and the brightness of PDP screen.
In another kind of exemplary embodiment of the present invention, a kind of manufacture method of PDP display is provided, comprise and prepare respectively front panel and rear board, front panel and rear board are sealed, wherein, the step of preparing front panel comprises: glass substrate is set again, on glass substrate, form electrode material layer, on electrode material layer, form dielectric film layer, it is characterized in that, the step of preparing front panel also comprises: 1) on dielectric film layer, form laminated magnetic film; Or 2) on dielectric film layer, form magnesia film layer, and form laminated magnetic film on magnesia film layer; Or 3) magnetic nanoparticle is mixed and is dispersed in magnesium oxide particle, form hybrid particles, hybrid particles is arranged on and on dielectric film layer, forms magnesia film layer.。
The preparation method of this PDP display does not change the preparation technology of original PDP display, has just increased simply by a procedure, on the front panel of plasma panel, magnetic-particle is set, these magnetic-particle raw materials are easy to get, cheap, and preparation method is simple, easily implements.The magnetic protective film of prepared laminated magnetic film or tool can produce local magnetic field; affect the approach of advancing of charge carrier; improve the traveling distance of charge carrier; make charge carrier in higher energy state, the collision efficiency between charge carrier improves, and charge carrier falls back to the increased frequency of low-energy state; emit more ultraviolet ray; by the different fluorescent material of these ultraviolet deexcitations, from fluorescent material, emit how versicolor light, and then improved the luminous efficiency of display screen.
In a kind of concrete execution mode, adopting aforesaid way 1) or 2) while preparing laminated magnetic film, further comprising the steps of: magnetic material to be ground into nano particle, these nanoparticulate dispersed, in solvent, are formed to mixed solution A; Scattered mixed solution A is sprayed on dielectric film layer or magnesia film layer, forms laminated magnetic film.This method is simple, easily implements.
In preparation when mixed solution A, operable solvent includes but not limited to all kinds of alcoholic solutions such as the aqueous solution or ethanol, methyl alcohol, propyl alcohol.In actual mechanical process, because nano level particle is easily reunited, be not easy to disperse, in order to reduce the reunion of nano particle, it is disperseed better, can in above-mentioned mixed solution A, add dispersant, the addition of dispersant is 2%～7% of mixed solution A total weight.Operable dispersant has included but not limited to silicates, metal tripolyphosphate salt and organic dispersing agent class etc.Wherein alkali metal phosphate class includes but not limited to sodium phosphate trimer, calgon and sodium pyrophosphate etc.Organic dispersing agent class includes but not limited to triethyl group hexyl phosphoric acid, lauryl sodium sulfate, methyl anyl alcohol, cellulose derivative, polyacrylamide, guar gum, fatty acid polyethylene glycol ester etc.Adopt these dispersants magnetic nanoparticle shape material can be distributed to the dispersion liquid that forms homogeneous in solvent equably, in the time spraying on dielectric film layer or magnesia film layer disperse also more even, form compared with the laminated magnetic film of homogeneous.
In the concrete execution mode of another kind, adopting aforesaid way 1) or 2) while preparing laminated magnetic film, further comprising the steps: magnetic material to be ground into nano particle, and nano particle is mixed with organic carrier, formation mixed slurry B; Mixed slurry B is printed on dielectric film layer or magnesia film layer, and sintering is removed organic carrier, forms laminated magnetic film.Sintering temperature can be controlled at 100～700 ℃, and sintering time can be controlled at 10～300min.Adopt in this way, magnetic nanoparticle material can be combined on the front panel of PDP display securely, form constitutionally stable laminated magnetic film.
The organic carrier adopting in this mode include but not limited to α-, β-, the terpenes such as γ-terpinol, ethylene glycol one alkyl ether, glycol dialkyl ether class and nitrocellulose, ethyl cellulose, the fibers such as hydroxyethylcellulose are resin, the mixture of butyl polyacrylate etc.As long as can realize the effect of even mictomagnetism nano particle.
In a kind of concrete execution mode, adopting aforesaid way 3) while preparing laminated magnetic film, further comprising the steps: magnetic material to be ground into nano particle, magnesium oxide particle is mixed with nano particle, formation mixture C; Mixture C evaporation, to dielectric film, is formed to the magnetic protective film of tool.Adopt and prepare in this way display screen, not only can reduce operating procedure, meanwhile, can also increase the uniformity that magnetic nanoparticle disperses, and then the utilance of charge carrier and the luminous efficiency of fluorescent material of raising plasma panel, the brightness that finally improves PDP display.
Further illustrate beneficial effect of the present invention below with reference to embodiment 1-6 and comparative example 1.In order to make embodiment 1-6 provided by the present invention and comparative example 1 there is direct comparison, in the time making embodiment 1-6 and comparative example 1, the unified silver electrode material that adopts of electrode material, dielectric film layer adopts identical low glass powder dielectric material preparation.In addition, in the step that does not have to describe in detail, also all adopt unified raw material, unified operating procedure in embodiment 1-6 and comparative example 1.
Embodiment 1
Prepare the raw material of laminated magnetic film: iron powder 5g, water 100g, sodium phosphate trimer dispersant 5g.
Preparation method:
Prepare front panel:
(1) glass substrate is set, on glass substrate, forms electrode material layer, on electrode material layer, form dielectric film layer, on dielectric film layer, form magnesia film.
(2) iron powder being crushed to granularity is 20-50nm, is added to the water, and adds dispersant, stirs 1 hour, forms mixed solution A.
(3) mixed solution A is packed in spray gun, continuous spray 20 seconds on magnesia film, at 100 ℃ dry 30 minutes, forms area and is 50% long-pending laminated magnetic film of magnesia film aspect.
Prepare rear board, and front panel and rear board are sealed.
Embodiment 2:
Prepare the raw material of laminated magnetic film: BaO6Fe
2o
3powder 50g, ethanol 1000g, calgon dispersant 30g.
Preparation method:
Prepare front panel:
(1) glass substrate is set, on glass substrate, forms electrode material layer, on electrode material layer, form dielectric film layer.
(2) by BaO6Fe
2o
3being crushed to granularity is 90-100nm, joins in ethanol, and adds dispersant, stirs 30 minutes, forms mixed solution A.
(3) mixed solution A is packed in spray gun, use spray gun continuous spray 10 seconds on dielectric film layer, at 80 ℃ dry 30 minutes, form area and be 40% long-pending laminated magnetic film of dielectric film aspect.
(4) on laminated magnetic film, form magnesia film layer.
Prepare rear board, and front panel and rear board are sealed.
Embodiment 3:
Prepare the raw material of laminated magnetic film: AlNi powder 10g, ethyl cellulose and ethylene glycol one alkyl ether 100g.
Preparation method:
Prepare front panel:
(1) glass substrate is set, on glass substrate, forms electrode material layer, on electrode material layer, form dielectric film layer, on low glass powder dielectric film layer, MgO protective layer is set.
(2) AlNi being crushed to granularity is 90-200nm, and joins in organic carrier, stirs 1.5 hours, forms mixed slurry B.
(3) mixed slurry B is printed on MgO protective layer, at 400 ℃, sintering is removed organic carrier for 60 minutes, and forming area is 35% laminated magnetic film of MgO protective layer area.
Prepare rear board, and front panel and rear board are sealed.
Embodiment 4
Prepare the raw material of laminated magnetic film: FeCrMo powder 10g, nickel powder 10g, glycol dialkyl ether and butyl polyacrylate 160g,
Preparation method:
Prepare front panel:
(1) glass substrate is set, on glass substrate, forms electrode material layer, on electrode material layer, form dielectric film layer.
(2) FeCrMo powder and nickel powder being crushed to granularity is 200-300nm, and joins in organic carrier, stirs 30 minutes, forms mixed slurry B.
(3) mixed slurry B is printed on dielectric film layer, at 400 ℃, sintering is removed organic carrier for 80 minutes, and forming area is 30% laminated magnetic film of MgO protective layer area.
(4) on laminated magnetic film, form magnesia film layer.
Prepare rear board, and front panel and rear board are sealed.
Embodiment 5
Prepare the raw material of the magnetic protective film of tool: iron powder 10g, SrO6Fe
2o
3powder 10g.
Preparation method:
Prepare front panel:
(1) glass substrate is set, on glass substrate, forms electrode material layer, on electrode material layer, form dielectric film layer.
(2) by iron powder and SrO6Fe
2o
3it is 100-150nm that powder is crushed to granularity, stirs 30 minutes, forms mixture C.
(3), at 300 ℃, mixture C evaporation, to dielectric film layer, is formed to the magnetic protective film of tool.
Prepare rear board, and front panel and rear board are sealed.
Embodiment 6
Prepare the raw material of the magnetic protective film of tool: cobalt powder 3g, FeAlC powder 10g, LaCa6Fe
2o
3powder, 12g.
Preparation method: with embodiment 5, wherein in step (2) by cobalt powder, FeAlC powder and LaCa6Fe
2o
3it is 150-200nm that powder is crushed to granularity; In step (3), at 200 ℃, mixture C evaporation, to dielectric film layer, is formed to the magnetic protective film of tool.
Comparative example 1
Preparation method:
Prepare front panel: glass substrate is set, on glass substrate, forms electrode material layer, on electrode material layer, form dielectric film layer, on dielectric film layer, form magnesia film layer.
Prepare rear board, and front panel and rear board are sealed.
Test:
To carry out luminous efficiency test by the prepared plasma panel of embodiment 1-6 with by the prepared plasma panel of comparative example 1, test result is as shown in table 1.
Table 1
As shown in Table 1, the prepared plasma panel of embodiment of the present invention 1-6, by the magnetic protective film of laminated magnetic film or tool is set in front panel, makes its luminous efficiency obviously be better than the luminous efficiency of the plasma panel prepared by comparative example 1.This just makes the plasma panel providing of the present invention more be conducive to plasma panel popularization, application.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a PDP display, comprises that front panel and the rear board of relative sealing-in, described front panel comprise the glass substrate, electrode material layer and the dielectric film layer that sequentially arrange, it is characterized in that, described front panel also comprises:
(1) be arranged on the laminated magnetic film on described dielectric film layer; Or
(2) be arranged on the magnesia film layer on described dielectric film layer, and be arranged on the laminated magnetic film on described magnesia film layer; Or
(3) be arranged on the magnesia film layer on described dielectric film layer, wherein, in this magnesia film, contain the magnetic nano particle of tool that disperses distribution;
Wherein, described in (1) and (2), in laminated magnetic film, be rich in the nano particle that is magnetic.
2. PDP display according to claim 1, it is characterized in that, in the time that the structure of described front panel is (1) or (2), the area of described laminated magnetic film be described dielectric film layer or described magnesia film aspect long-pending below 50%.
3. PDP display according to claim 1, is characterized in that, in the time that the structure of described front panel is (3), the volume of the described nano particle in described magnesia film layer accounts for the 1%-60% of cumulative volume.
4. according to the PDP display described in any one in claim 1-3, it is characterized in that, described nano particle comprises nano particle and the ferrite of metal nanoparticle, alloy material.
5. PDP display according to claim 4, is characterized in that, described metal is one or more in iron, nickel, cobalt group;
Described alloy material comprises AlNi, AlCo, FeCr, FeCo, FeCrMo, FeAlC, FeCoV and FeCoW; Described ferritic main component is MO6Fe
2o
3, M represents Ba, Sr, Pb or SrCa, LaCa compounding ingredients.
6. according to the PDP display described in any one in claim 1-3, it is characterized in that, the granularity of described nano particle is 20≤D≤300 nanometer.
7. the manufacture method of a PDP display, comprise and prepare respectively front panel and rear board, again front panel and rear board are sealed, wherein, the step of preparing described front panel comprises: glass substrate is set, on described glass substrate, forms electrode material layer, form dielectric film layer on described electrode material layer, it is characterized in that, the step of preparing described front panel also comprises:
1) on described dielectric film layer, form laminated magnetic film; Or
2) on described dielectric film layer, form magnesia film layer, and form laminated magnetic film on described magnesia film layer; Or
3) described magnetic nanoparticle is mixed and is dispersed in magnesium oxide particle, form hybrid particles, described hybrid particles is arranged on described dielectric film layer and forms magnesia film layer.
8. method according to claim 7, is characterized in that, employing mode 1) or 2) while preparing described laminated magnetic film, further comprising the steps:
Magnetic material is ground into nano particle, and by nanoparticulate dispersed in solvent, form mixed solution A;
Described mixed solution A is sprayed on described dielectric film layer or described magnesia film layer to the dry rear described laminated magnetic film that forms.
9. method according to claim 7, is characterized in that, employing mode 1) or 2) prepare described laminated magnetic film, further comprising the steps:
Magnetic material is ground into nano particle, and nano particle is mixed with organic carrier, form mixed slurry B;
Described mixed slurry B is printed on described dielectric film layer or described magnesia film layer, and sintering is removed described organic carrier, forms described laminated magnetic film.
10. method according to claim 7, is characterized in that, employing mode 3) prepare described laminated magnetic film, further comprising the steps:
Magnetic material is ground into nano particle, magnesium oxide particle is mixed with described nano particle, form mixture C;
Described mixture C evaporation, to described dielectric film layer, is formed to the magnetic diaphragm of described tool.
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| CN201110459535.1A CN103794442A (en) | 2011-12-31 | 2011-12-31 | Plasma screen and manufacturing method thereof |
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|---|---|---|---|
| CN201110459535.1A CN103794442A (en) | 2011-12-31 | 2011-12-31 | Plasma screen and manufacturing method thereof |
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| US6008577A (en) * | 1996-01-18 | 1999-12-28 | Micron Technology, Inc. | Flat panel display with magnetic focusing layer |
| US5959403A (en) * | 1996-10-09 | 1999-09-28 | Lg Electronics Inc. | Plasma display panel with magnetic partition walls |
| JP2002352729A (en) * | 2001-05-28 | 2002-12-06 | Matsushita Electric Ind Co Ltd | Gas discharge panel |
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Application publication date: 20140514 |