CN1720202A - Glass for flat panel display substrate and flat panel display substrate - Google Patents
Glass for flat panel display substrate and flat panel display substrate Download PDFInfo
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- CN1720202A CN1720202A CNA2003801051617A CN200380105161A CN1720202A CN 1720202 A CN1720202 A CN 1720202A CN A2003801051617 A CNA2003801051617 A CN A2003801051617A CN 200380105161 A CN200380105161 A CN 200380105161A CN 1720202 A CN1720202 A CN 1720202A
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- flat panel
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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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/863—Vessels or containers characterised by the material thereof
-
- 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
- H01J2329/8605—Front or back plates
- H01J2329/8615—Front or back plates characterised by the material
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Glass Compositions (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Gas-Filled Discharge Tubes (AREA)
Abstract
The present invention provides a glass for flat panel display substrate and flat panel display substrate that when applying an Ag paste onto a substrate glass and firing the same so as to form electrodes, effectively inhibit yellowing caused by diffusion of metal Ag colloids into the substrate glass. This glass for flat panel display substrate contains less than 6% by weight of Na2O, exhibiting a strain point of 560 to below 580 DEG C, an average thermal expansion coefficient of 80 to 95 x 10<-7>/ DEG C over a temperature range of 50 to 350 DEG C and a density of 2.7 x 10<3> Kg/m<3> or less, and has an optical basicity of 0.60 or less.
Description
Technical field
The present invention relates to flat pannel display (below be called " FPD ") substrate with glass and FPD substrate, particularly utilize the FPD front panel of discharge principle and FPD substrate usefulness glass and FPD substrate that backplate is used as plasma display (below be called " PDP ") and field-emitter display (below be called " FED ") etc.
Background technology
In recent years, as the large flat TV, stepping up to carry out the exploitation of FPD such as PDP, FED, liquid-crystal display always.Wherein, PDP and FED are the display unit of utilizing the discharge that produced when applying electric field between the electrode of inside to show.
PDP is a kind of such display mode, it produces ultraviolet ray, this ultraviolet ray excited predetermined fluor by means of the discharge that produces by rare gas in the low pressure rare gas of enclosing panel inside, produce visible light, thereby demonstrate images such as literal and figure.In addition, FED is the display unit according to following mode: in the inner high vacuum that keeps of panel, apply electric field in this high vacuum, utilize the electron-beam excitation fluor that produces, thereby produce visible light.
Below, enumerate an example and be illustrated with regard to the manufacture method of PDP.
At first, substrate is with on glass overleaf, addressing electrode (address electrode) by formation such as method for printing screen are made of silver (Ag) forms visible light reflecting layer and the glass barrier (barrier rib) that is made of dielectric medium with predetermined spacing on addressing electrode.In each space of being separated by these barriers, set respectively by versicolor fluorophor paste, form luminescent coating thus, under about 500 ℃, burn till luminescent coating then, remove resinous principle in the fluorophor paste of all kinds etc.
After luminescent coating burnt till, substrate was used to seal back substrate with glass and front substrate glass with being coated with low-melting glass powder (glass frit) around the glass overleaf, calcines to remove the resinous principle of glass powder down at about 300 ℃ then.
Afterwards; to be formed with front substrate glass and the aforementioned back substrate glass surface subtend configuration of show electrode, dielectric glass layer and protective layer by the separation of barrier; so that make show electrode and addressing electrode quadrature, under 600 ℃, calcine, by glass powder with low melting point sealing on every side.Then, under the state that is heated under about 300 ℃, extract the air in the panel gap out, bleed finish after, fill discharge gas, finished the manufacturing of PDP thus.
As PDP substrate glass, what be widely used is strain point height and the big glass of thermal expansivity.Common this PDP substrate adopts flatness, glass composition homogeneity excellence and the high float glass process of production efficiency of major surfaces to produce with glass.What float glass was known is: owing to be exposed in the nitrogen atmosphere in process of production, so be formed with the reducing zone of a few μ m of thickness at glass surface, in this reducing zone, exist the tin ion that comes from molten tin (below be called " Sn
2+").
At PDP substrate that float glass process forms with on the major surfaces of glass, the separation silver coating slurry by transparency electrode as electrode after, if repeat heat treatment step several times, then silver ions (below be called " Ag
+") will be diffused in the transparency electrode and arrive glass surface, thereby with glass in alkalimetal ion (particularly sodium ion (below be called Na
+)) between produce ion-exchange.Then, invade Ag in the glass
+, the Ag of intrusion
+The Sn that is present in reducing zone
2+Reduce and the colloid of generation argent.Consequently produce substrate is colored as yellow (below be called " xanthochromia ") because of the colloid of metal A g with glass problem.
In addition, Ag
+Produce diffusion not only in electrode formation portion diffusion, and at its periphery, with aforementioned similarly by Sn
2+Reduce and the colloid of generation metal A g, thereby substrate xanthochromia can occur mostly with glass, have the problem of damaging display performance.
So, using alkali-containing glass to use under the situation of glass as the PDP substrate, the various inhibition substrates xanthochromic method of glass has been proposed up to now.
Open in the flat 10-255669 communique the spy, disclose a kind of FPD substrate glass, the substrate that it is made by the grinding float glass process major surfaces of glass has been removed the reductibility heterosphere that generates at major surfaces.
Known up to now is: the substrate that float glass process forms with glass owing to narrating as the front, in forming process, be exposed in the nitrogen atmosphere, the face (bottom surface) that contact tin (Sn) is bathed is used at substrate simultaneously with the face that contacts nitrogen atmosphere one side (end face) and is generated the thick reducing zone of a few μ m on the major surfaces of glass, and forms Sn on this reducing zone
2+Diffusion layer.In addition, equally well knownly be: Sn
2+Diffusion layer have reductibility, Sn
2+Diffusion layer can go back iron in the bare glass, the result produces the bottom surface to be colored as blue phenomenon (bloom: bloom).Therefore, grinding is removed and is present in the Sn of substrate with the glass major surfaces
2+Diffusion layer is a simple technology to one skilled in the art.Yet, substrate is all carried out abrasive method with glass becomes the important factor that greatly raises the cost, so and unrealistic.
In addition, open in the flat 10-334813 communique, disclose front substrate with Fe that glass contained the spy
2O
3The plasm display device that quantity not sufficient 2000ppm, metal electrode are formed by Ag.
In the sheet glass of float forming, the Fe of the impurity of sneaking into from frit
2O
3Amount be generally about 1500ppm, so with this glass as the PDP substrate when use glass, can not suppress the xanthochromia that the colloid by aforementioned metal Ag causes, thereby the real solution of can not saying so.
In addition, open in the 2001-213634 communique the spy, disclose a kind of display base plate float glass, this glass is with Li by float glass process
2O, Na
2O and K
2The total content of O is 7.5～20 moles of %, Al
2O
3Content be that the silicate glass that 1.5 moles of % or content above, BaO are 0～3.5 mole of % is configured as tabular sheet glass, wherein contain a kind of being selected among F, Cl, Br, the I or more kinds of.
In the sheet glass of float forming, the chlorine of the impurity of being sneaked into by frit is generally about 0.01 weight %, but F
-And Cl
-Deng hard base with as the Ag of soft acid
+Preferential force of cohesion a little less than, almost can not get the effect that suppresses painted.In addition, if use Br
-And I
-Etc. soft alkali, then can expect and Ag
+The painted effect of inhibition of preferential Cheng Jian, but suitable industrial raw material all do not exist, and also price is also higher, so and unrealistic.
In addition, open in the 2002-226233 communique, disclose a kind of flat pannel display substrate float glass, wherein Na the spy
2O, K
2O and Li
2The total content of O be 5 weight % or more than, 20 ℃ proportion be 2.7 or below, the transmitance of float glass in wavelength 410nm before silver is handled is designated as Tref, the transmitance of float glass in wavelength 410nm of carrying out after silver is handled is designated as T if carry out, then the absorbance A calculated by A=-log10 (T/Tref) of this float glass be 0.08 or below.Here, aforementioned so-called silver is handled and is made of following operation: in the surface of float glass, be coated with the Ag slurry that contains silver particles, organic solvent and resin on the surface of a side (end face) that does not contact with molten tin in the float bath; Burnt till under 580 ℃ 1 hour in atmosphere, forming thickness and be 10 μ m or above, silver content on the surface of this float glass is 95 weight % or above film; Utilize nitric acid to remove aforementioned films from the surface of this float glass.
But, open in the 2000-226233 communique aforementioned spy, the colloid of only having narrated " because the few side of tin infiltration capacity in glass; its color development is also less; so preferred the least possible glass of tin content " this known fact and having estimated because of metal A g produces xanthochromic method, can't become basic solution.
Summary of the invention
Problem in view of above-mentioned prior art exists the objective of the invention is to: provide a kind of can the inhibition to produce xanthochromic FPD substrate glass and FPD substrate because of the colloid of metal A g.
In order to reach above-mentioned purpose, according to the 1st scheme of the present invention, can provide a kind of FPD substrate glass, this glass is represented with weight %, contains the Na of less than 6%
2O; Having the strain point that is not less than 580 ℃ of 560 ℃ and less thaies, is 80～95 * 10 in 50～350 ℃ temperature range
-7/ ℃ mean thermal expansion coefficients and 2.7 * 10
3Kg/m
3Or following density; And have 0.60 or following optical basicity.
In the 1st scheme of the present invention, in weight %, K
2O/Na
2The value of O be preferably 2 or more than.
In the 1st scheme of the present invention, % represents with weight, preferably contains to be converted into ZrO
2Be 0.2%～2.5% zirconium white and be converted into Fe
2O
3For being not less than 0.01% and total ferric oxide (the T-Fe of less than 0.5%
2O
3).
In the 1st scheme of the present invention, the glass on basis is formed and is represented with weight %, and preferred composition is:
55～70% SiO
2,
0.2～5% Al
2O
3,
0～15% MgO,
2～15% CaO,
0～15% SrO,
10～30% MgO+CaO+SrO+BaO,
0～5% Li
2O,
0～6% Na
2O,
0～15% K
2O,
5～25% Na
2O+K
2O,
Be converted into ZrO
2Be 0.2%～2.5% zirconium white,
Be converted into Fe
2O
3For being not less than 0.1% and total ferric oxide (the T-Fe of less than 0.5%
2O
3),
And 0～5% B
2O
3
In the 1st scheme of the present invention, form as the glass on basis, preferably do not contain BaO in fact.
In order to reach above-mentioned purpose,, can provide the FPD substrate that uses in the 1st scheme of the present invention FPD substrate of glass according to the 2nd scheme of the present invention.
Embodiment
Below be described in detail with regard to embodiment of the present invention.
Use in the glass Na at the related FPD substrate of embodiment of the present invention
2The effect that O had is: improve the solvability of glass, reduce the dissolving load, enhance productivity.In addition, Na
2O can increase thermal expansivity, thereby chemical durability and electrical insulating property are reduced.Moreover, when the xanthochromia that the colloid that is conceived to because of metal A g produces, can infer Na
2O produces bigger influence to xanthochromia.
Invade the situation in the glass if consider the Ag ion, can infer: at first Ag captures electronics and becomes Ag
+, then with glass in the form of alkalimetal ion generation ion-exchange invade in the glass.Especially, can think Na in the glass
+Velocity of diffusion very fast, with Ag
+Ion-exchange in play a part leading.Therefore, in order to suppress Ag
+Intrusion in glass, Na
2O is necessary for and is lower than 6%.
Ag in the known intrusion glass
+Like this to color development and unfavorable, and in glass, accept electronics and form metal A g (Ag
0) after, form colloid by cohesion and produce xanthochromia.
In glass, give Ag
+Provide electronics to as if Sn
2+And iron ion (Fe
2+) etc., but the inventor finds: by reducing the sub-property of power supply of glass itself, suppressing Ag
+The color development aspect be effective.
As one of the yardstick of the sub-property of power supply of expression glass, known is the optical basicity (Optical Basicity) of glass.Represent that the acid of each element, the coefficient of alkalescence have various theories, the value that is proposed is also various, but is not to obtain at all elements.So, use be it is generally acknowledged with Pauling electronegativity (pauling electronegativity) even basicity mitigation coefficient (the Basicity moderating parameter) γ of Duffy that the not clear element of relevant coefficient also can infer out accurately and Ingram has obtained the optical basicity that each glass is formed from following formula (1).
Optical basicity=∑ (with the total oxidation value of m coordinate (total oxidation number))/(γ
mTotal oxidation value in the * glass)
M: the cation type that contains in the glass
γ
m: the basicity of positively charged ion m relaxes coefficient
The inventor finds that the xanthochromia that optical basicity that several glass form and colloid because of metal A g produce is relevant, if make as can be known the value of optical basicity be 0.60 or below, scope in particular for 0.57～0.60 then can be improved the xanthochromia that the colloid because of metal A g produces.
Below, discuss the qualification reason of each compositing range.
K
2O and aforementioned Na
2O can improve the solvability of glass equally, reduces the dissolving load to enhance productivity.In addition, effect compares Na
2O is littler, but because increased thermal expansivity, thereby chemical durability, electrical insulating property are minimized.But,, then can infer K if be conceived to the xanthochromia that produces because of metal A g colloid
2The behavior of O and Na
2O is very different.
Potassium ion (below be called K
+) and Na
+Similarly help and Ag
+Carry out ion-exchange, still, because K
+Velocity of diffusion and Na
+Compare very little, so hinder Ag
+Depths toward glass forms diffusion layer.In addition, in case arrive the outer K of glass
+To hinder Na
+And Ag
+Ion-exchange, so can suppress Ag
+Intrusion speed in glass, thus diffusion is suppressed.Therefore, in weight %, preferred K
2O/Na
2The ratio of O be 2 or more than, be preferably 6～14 scope especially.
Can be used to improve the strain point of glass as the RO of alkaline earth metal oxide (R is selected among Ca, Mg, Sr and the Ba a kind or more kinds of), the weather resistance of reinforcing glass is regulated devitrification temperature and viscosity when being shaped simultaneously.In addition, because it is also bigger to reduce the effect of viscosity, so can suitably contain.But if the content of MgO surpasses 15%, then devitrification temperature rises.For the containing quantity not sufficient 2% or surpass 15% situation and SrO content and surpass 15% situation of CaO, devitrification temperature is raise.
Ba ion (Ba
2+) owing to compare with other alkaline-earth metal ions, it is less that its basicity relaxes coefficient gamma, so have the effect that increases optical basicity.In addition, if add BaO, then the density of glass rises.Therefore, for the density that makes glass be 2.7 or below, preferably do not contain BaO in fact.
BaO introduces as the impurity in other alkaline-earth metal raw material industrial.In the present invention, so-called " not containing BaO in fact " be meant content be 0.2% or below.
ZrO
2Has the effect that increases strain point, improves the weather resistance of glass.ZrO
2Content be preferably 0.2% or more than.Zr ion (Zr
4+) compare with other the ion of formation network, because that basicity relaxes coefficient gamma is less, so have the effect that increases optical basicity.Moreover, owing to raising, the devitrification temperature that can make glass surpasses forming temperature, so ZrO
2Content be preferably 2.5% or below.
Be converted into Fe
2O
3Total ferric oxide (T-Fe
2O
3If) content be 0.5% or more than, then from substrate xanthochromic angle takes place and considers, owing to can not ignore Fe
2+To Ag
+Reductive action, thereby be not preferred.
SiO
2(silicon-dioxide) is the principal constituent that forms the glass skeleton.SiO
2Contain quantity not sufficient 55%, then the weather resistance of glass is low, surpasses at 70% o'clock, then the dissolving of the glass difficulty that becomes.
Al
2O
3Be the composition that improves durability of glass, if but its content surpasses 5%, and then the dissolving of glass becomes difficult.Al
2O
3Preferred range is 0.2～2%.
B
2O
3Be to be used to improve the weather resistance of glass or also to can be used as the composition that solubility promoter uses.If B
2O
3Content surpass 5%, then have problems, so its upper limit is set at 5% because of volatilization waits when being shaped.
Glass in compositing range of the present invention preferably adopts the float glass process manufacturing, and the vitriol that uses basic metal or alkaline-earth metal usually is as finings.At this moment, remaining SO in the glass
3The scope of amount is preferably 0.1～0.3%.
Glass composition for substrate of the present invention is under 50～350 ℃ temperature range, and its mean thermal expansion coefficients is 80～95 * 10
-7/ ℃ scope, produce with glass and break and crackle so can suppress the substrate that causes by thermal stresses.Mean thermal expansion coefficients less than 80 * 10
-7/ ℃ or surpass 95 * 10
-7/ ℃ the time, then be difficult to make periphery material and mean thermal expansion coefficients to be complementary.
Glass composition for substrate of the present invention can be by following method manufacturing: will be allocated as the raw material supply that target forms and carry out vitrifying in melting furnace, and be configured as the clear plate glass of pre-determined thickness then by float glass process etc.
Below, enumerate specific embodiment and describe with regard to embodiment of the present invention.
(embodiment)
To be fed to by the frit that constitute forming shown in the table 1 in the glass melting furnace of standard and dissolve, be tabular by float forming, just produces the glass test portion of present embodiment.For this glass test portion, measured the absorbancy variable quantity before and after strain point, mean thermal expansion coefficients, density, optical basicity and silver are handled.The mensuration of strain point, mean thermal expansion coefficients and density uses the method that is usually known to carry out.The mensuration of the absorbancy variable quantity before and after in addition, silver is handled can be opened the method for putting down in writing in the 2000-226233 communique according to aforementioned spy and carry out.
Table 1
| (weight %) | Embodiment | Comparative example 1 | Comparative example 2 |
| SiO 2 | 61.90 | 71.75 | 58.1 |
| Al 2O 3 | 3.16 | 1.81 | 6.65 |
| Na 2O | 1.97 | 13.45 | 4.17 |
| K 2O | 10.21 | 0.84 | 6.56 |
| MgO | 6.93 | 3.99 | 1.96 |
| CaO | 3.56 | 7.88 | 4.94 |
| SrO | 11.97 | 0.00 | 6.97 |
| BaO | 0.16 | 0.00 | 7.92 |
| TiO 2 | 0.020 | 0.000 | 0 |
| ZrO 2 | 0.380 | 0.000 | 2.68 |
| Fe 2O 3 | 0.094 | 0.016 | 0.103 |
| SO 3 | 0.180 | 0.193 | 0.11 |
| Strain point | 576 | 509 | 575 |
| Thermal expansivity | 84 | 86 | 85 |
| Density | 2.64 | 2.94 | 2.78 |
| Optical basicity | 0.58380298 | 0.57818547 | 0.6096982 |
As shown in table 1, the glass test portion of present embodiment has 576 ℃ strain point, 84 * 10
-7/ ℃ thermal expansivity and 2.64 * 10
3Kg/m
3Density.Therefore, the glass test portion of present embodiment has high strain point, and when using as the FPD substrate, thermal contraction is less, and has big thermal expansivity and the such excellent characteristic of low density.Moreover, since with optical basicity be suppressed at 0.60 or below, so also be good aspect the xanthochromic effect that produces at the colloid that suppresses because of metal A g.
(comparative example 1,2)
Comparative example 1 is typical soda-lime silica glass, and its glass is formed outside the scope of the invention.The thermal expansivity of the glass of this composition is 86 * 10
-7/ ℃, within the scope of the invention, be 2.49 * 10 but strain point is 509 ℃, density
3Kg/m
3, any one is all much lower than the glass in the scope of the present invention.In addition, comparative example 2 is that the typical PDP substrate of selling in the existing market is formed with the glass of glass.The optical basicity of comparative example 2 surpasses 0.60 as can be known, because of the xanthochromic inhibition effect that metal A g colloid produces relatively poor.And density is also big, reaches 2.78, outside scope of the present invention.
Moreover the silver after the silver that has compared embodiment and comparative example 1,2 is handled distributes.The result is that embodiment compares with comparative example 2 with comparative example 1, helps the thinner thickness of the silver-colored distribution layer of color development.Hence one can see that: the colloid that the substrate of embodiment can suppress metal A g with glass spreads in glass and produces xanthochromia.
As above described in detail, according to FPD substrate glass of the present invention, can obtain following FPD substrate glass: % represents with weight, contains the Na of less than 6%
2O; Having the strain point that is not less than 560 ℃ and is lower than 580 ℃, is 80～95 * 10 in 50～350 ℃ temperature range
-7/ ℃ mean thermal expansion coefficients and 2.7 * 10
3Kg/m
3Or following density; And have 0.60 or following optical basicity, so at substrate with coating Ag slurry on glass, burn till and when forming electrode, can suppress the colloid xanthochromia that diffusion produces in substrate usefulness glass effectively, thereby obtain the FPD substrate glass that thermal contraction is less and chemical durability is good because of metal A g.
In addition, according to FPD substrate glass of the present invention, the glass on basis is formed and is represented that with weight % its composition is: 55～70% SiO
2, 0.2～5% Al
2O
3, 0～15% MgO, 2～15% CaO, 0～15% SrO, 10～30% MgO+CaO+SrO+BaO, 0～5% Li
2O, 0～6% Na
2O, 0～15% K
2O, 5～25% Na
2O+K
2O is converted into ZrO
2Be 0.2%～2.5% zirconium white, be converted into Fe
2O
3For being not less than 0.1% and be lower than 0.5% total ferric oxide (T-Fe
2O
3) and 0～5% B
2O
3So resistance to sudden heating, crack resistance and plasticity are all good, and then, can be used as the FPD substrate and used because strain point height, heat-shrinkable are little.
In addition, according to FPD substrate glass of the present invention, the glass on basis is formed and not to be contained BaO in fact, thus glass density can be suppressed at 2.7 or below.
In addition, according to FPD substrate of the present invention, owing to used FPD substrate glass of the present invention, so thermal contraction is less, and chemical durability is also good, so be suitable as the glass substrate of FPD purposes such as PDP and FED.
Claims (6)
1. flat pannel display substrate glass, it is represented with weight %, contains the Na of less than 6%
2O; Having the strain point that is not less than 560 ℃ and is lower than 580 ℃, is 80～95 * 10 in 50～350 ℃ temperature range
-7/ ℃ mean thermal expansion coefficients, and 2.7 * 10
3Kg/m
3Or following density; And have 0.60 or following optical basicity.
2. the flat pannel display substrate glass of putting down in writing according to claim 1 is wherein in weight %, K
2O/Na
2The value of O be 2 or more than.
3. the flat pannel display substrate glass of putting down in writing according to claim 1, wherein in weight %, contain:
Be converted into ZrO
2Be 0.2%～2.5% zirconium white,
Be converted into Fe
2O
3For being not less than 0.01% and be lower than 0.5% total ferric oxide.
4. the flat pannel display substrate glass of putting down in writing according to claim 1, wherein, the glass on basis is formed and is represented that with weight % its composition is:
55～70% SiO
2,
0.2～5% Al
2O
3,
0～15% MgO,
2～15% CaO,
0～15% SrO,
10～30% MgO+CaO+SrO+BaO,
0～5% Li
2O,
0～6% Na
2O,
0～15% K
2O,
5～25% Na
2O+K
2O,
Be converted into ZrO
2Be 0.2%～2.5% zirconium white,
Be converted into Fe
2O
3For being not less than 0.1% and be lower than 0.5% total ferric oxide,
And 0～5% B
2O
3
5. the flat pannel display substrate glass of putting down in writing according to claim 1 is wherein formed as the glass on basis and is not contained BaO in fact.
6. a flat pannel display substrate is characterized in that: the flat pannel display substrate glass that has used claim 1 to put down in writing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP355083/2002 | 2002-12-06 | ||
| JP2002355083A JP2004182577A (en) | 2002-12-06 | 2002-12-06 | Glass for flat panel display substrate and flat panel display substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1720202A true CN1720202A (en) | 2006-01-11 |
Family
ID=32500777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003801051617A Pending CN1720202A (en) | 2002-12-06 | 2003-11-26 | Glass for flat panel display substrate and flat panel display substrate |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2004182577A (en) |
| KR (1) | KR20050084172A (en) |
| CN (1) | CN1720202A (en) |
| TW (1) | TWI276617B (en) |
| WO (1) | WO2004052799A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006252828A (en) * | 2005-03-09 | 2006-09-21 | Nippon Electric Glass Co Ltd | Glass substrate for plasma display panel |
| KR100750990B1 (en) | 2005-06-22 | 2007-08-22 | 주식회사 케이씨씨 | High Strain-point Glass composition for substrate |
| JPWO2011158366A1 (en) * | 2010-06-17 | 2013-08-15 | 旭硝子株式会社 | Glass substrate and manufacturing method thereof |
| TW202035311A (en) * | 2019-01-29 | 2020-10-01 | 美商康寧公司 | Methods for reducing chromium oxidation state during processing of glass compositions |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5631195A (en) * | 1994-09-14 | 1997-05-20 | Asahi Glass Company Ltd. | Glass composition and substrate for plasma display |
| KR100320628B1 (en) * | 1996-07-10 | 2002-03-08 | 모리 데쯔지 | Substrate glass and plasma display made by using the same |
| JPH1025129A (en) * | 1996-07-12 | 1998-01-27 | Nippon Electric Glass Co Ltd | Glass for substrate |
-
2002
- 2002-12-06 JP JP2002355083A patent/JP2004182577A/en active Pending
-
2003
- 2003-11-26 KR KR1020057010168A patent/KR20050084172A/en not_active Application Discontinuation
- 2003-11-26 CN CNA2003801051617A patent/CN1720202A/en active Pending
- 2003-11-26 WO PCT/JP2003/015113 patent/WO2004052799A1/en active Application Filing
- 2003-12-02 TW TW092133846A patent/TWI276617B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TW200417527A (en) | 2004-09-16 |
| KR20050084172A (en) | 2005-08-26 |
| JP2004182577A (en) | 2004-07-02 |
| TWI276617B (en) | 2007-03-21 |
| WO2004052799A1 (en) | 2004-06-24 |
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