CN1594158A - Composition used for manufacturing glass substrate - Google Patents
Composition used for manufacturing glass substrate Download PDFInfo
- Publication number
- CN1594158A CN1594158A CN 03156863 CN03156863A CN1594158A CN 1594158 A CN1594158 A CN 1594158A CN 03156863 CN03156863 CN 03156863 CN 03156863 A CN03156863 A CN 03156863A CN 1594158 A CN1594158 A CN 1594158A
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- CN
- China
- Prior art keywords
- glass substrate
- constituent
- make
- order
- oxide
- Prior art date
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Classifications
-
- 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
- C03C4/00—Compositions for glass with special properties
-
- 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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
-
- 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
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- 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
- C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Disclosed is a composition used for manufacturing glass substrate with silicon oxide as the predominating constituent, the composition comprises yttrium oxide 0.01-10 wt%, aluminum oxide 10-18 wt%, diboron trioxide 10-15 wt%, calcium oxide 0-10 wt%, strontium oxide 0-4 wt%, lanthanum oxide 0.01-9 wt%.
Description
Technical field
The invention relates to a kind of in order to make the constituent of glass substrate, refer in particular to a kind of glass substrate that is suitable for making large-area flat-panel screens need constituent.
Background technology
In advanced information society, the flat-panel screens role is more and more important.Computer, mobile phone and various display equipment popularizing rapidly, make have lightening, complanation, the flat-panel screens of characteristics such as full-colorization and high color comparative, more widely market is accepted.In such trend, the manufacturer of production flat-panel screens, the lightening exploitation road of also warming up for panel.And the thickness that panel the most direct lightening means are attenuate glass substrates, thereby flat-panel screens manufacturers heightens for the demand of slim glass substrate, in the hope of alleviating its panel weight.
Simultaneously also because the popularizing of flat-panel screens, mass production also reduces cost and also becomes one of competitive strategy of manufacturers.Desire to reduce cost and mass production, at first must increase the size of glass substrate, the multi-disc panel improves production capacity in the hope of cutting out more under same process.Chang Yong standard is (550mm*650mm) the 3.5th generation in the 3rd generation (600mm*720mm) now, but the application of up-to-date technology has reached the 5th generation (1100mm*1250mm), and has the more trend of large size development of court.Therefore for glass substrate manufacturers, produce the glass of amplifying and become trend.
According to the above, adding the top glass substrate constituent needs to bear required fusing and forming processes in the production sheet glass processing procedure, and considers the high-quality trend of present low-cost mass production, and the factor that manufacturing flat-panel screens glass substrate need be considered is:
(1) have higher glass strain temperature (strain point temperature), glass substrate is changed into have high heat-resistant quality, wherein the stress temperature is required to be 600 ℃ at least, is good to surpass 650 ℃;
(2) lower thermal expansivity, reducing the possibility of glass substrate rising-heat contracting-cold deformation, and thermal expansivity is inlayed the possibility of closing (Chipon Glass) preferably near the thermal expansivity of silicon crystal so that realize silicon crystal on glass substrate;
(3) chemical resistant properties can be carried out processing procedure under harsh etching environment;
(4) have high young's modulus,, be subjected to gravity, be subjected to stress and the possibility of deformation to reduce glass substrate to increase the rigidity (Rigidity) of glass substrate;
(5) less surface roughness is to increase display effect.
In the conventional art, the glass substrate that the glass component of US5116787 patent and US5116789 patent is made all has high glass strain temperature, yet, the thermal expansivity of these conventional arts is too high, causes the possibility that can't reduce the deformation of glass substrate rising-heat contracting-cold.
And conventional art US6128924 patent and US6319867 patent propose the made alkali-free glass substrate of glass component, but fail effectively to improve to compare young's modulus.
In addition, more healthy and free from worry (Corning) be existing technology at present, and for making characteristics such as glass substrate lightweight, low thermal expansivity and Nai Gaore, all the addition with increase silicon-dioxide is a solution.Yet, so can increase the processing temperature and the process period of glass melting, cause degradation problem under the waste of the energy and the production capacity.
Summary of the invention
Main purpose of the present invention provides a kind of constituent of glass substrate, overcomes the drawback of prior art, reaches the purpose of making the glass substrate with quite high young's modulus (Young ' s modulus).
Second purpose of the present invention provides a kind of constituent of glass substrate, reaches to make to have relatively low thermel expansion coefficient (Coefficent Thermal Expansion; The purpose of glass substrate CTE).
The 3rd purpose of the present invention provides a kind of constituent of glass substrate, reaches to make to have the purpose that higher stress temperature (strain point temperature) reaches the glass substrate of higher tempering temperature (annealing pointtemperature).
The 4th purpose of the present invention provides a kind of constituent of glass substrate, reaches the purpose of making the glass substrate with less surfaceness.
The 5th purpose of the present invention provides a kind of constituent of glass substrate, reaches the purpose of making the chemical-resistant glass substrate.
The object of the present invention is achieved like this: a kind of in order to make the constituent of glass substrate, it is characterized in that: it is included in silicon-dioxide is that the weight percent that contains yttrium oxide in the main component is between 0.01% to 10%.
This constituent also includes between the aluminium sesquioxide 10% to 18%, between the boron trioxide 10% to 15%, between the calcium oxide 0% to 10% and between the strontium oxide 0% to 4%.This constituent also comprises
Have between the lanthanum sesquioxide 0.01% to 9%.The young's modulus of this glass substrate is greater than 7200kg/mm
2The stress temperature of this glass substrate is higher than 650 ℃, and the tempering temperature of this glass substrate is higher than 700 ℃.The linear expansivity of this glass substrate is lower than 31 * 10
-7This glass substrate places the hydrofluoric acid solution 20 minutes of concentration expressed in percentage by weight 10% under 22 ℃ environment, the weight loss of this glass substrate in every square centimeter less than 1.0 milligrams.This glass substrate places the sodium hydroxide solution 360 minutes of concentration expressed in percentage by weight 5% under 95 ℃ environment, the weight loss of this glass substrate in every square centimeter less than 1.0 milligrams.The constituent of this glass substrate comprises that adding a finings removes bubble, and this finings is the finings that is selected from the group that is made up of the antimonous oxide of the white arsenic of weight percent 0% to 1%, weight percent 0% to 1%.This glass substrate is the alkali-free glass substrate that is applied to flat-panel screens, and the surfaceness of this glass substrate is less than 0.5 rice how.
Therefore, make the constituent of glass substrate by the present invention, as silicon-dioxide (SiO
2), yttrium oxide (Y
2O
3), aluminium sesquioxide (Al
2O
3), boron trioxide (B
2O
3), calcium oxide (CaO), strontium oxide (SrO) and lanthanum sesquioxide (La
2O
3), the composition that cooperates its certain limit, can make this glass substrate have higher young's modulus, lower thermal expansivity, preferable chemical resistant properties, higher stress temperature (strain pointtemperature) and higher tempering temperature (annealing point temperature), and improve the efficient of making glass substrate, and reduce the time of making glass substrate.Particularly higher young's modulus causes the rigidity of this glass substrate preferable, this glass substrate is applicable to makes large-sized flat-panel screens.
Further specify below in conjunction with preferred embodiment.
Embodiment
The present invention provides a kind of in order to make the constituent of glass substrate, and this constituent comprises silicon-dioxide (SiO
2), yttrium oxide (Y
2O
3), aluminium sesquioxide (Al
2O
3), boron trioxide (B
2O
3), calcium oxide (CaO), strontium oxide (SrO) and lanthanum sesquioxide (La
2O
3).Wherein, the weight percent summation of the majority kind constituent of described glass substrate is no more than 100%.
Glass substrate of the present invention is the high nonbreakable glass substrate of alkali-free that is used for flat-panel screens, can utilize several main glass substrate processing procedures making this glass substrate, as melt and flow down pull-type processing procedure (Over-flow FusionProcess), horizontal floating processing procedure (Floating/Tin Bath Process) or spout pull-down processing procedure (Slit-downDraw Process).Because the glass substrate of flat-panel screens is close to the opticglass grade, so no matter use which kind of processing procedure, the surfaceness of this glass substrate all needs less than 0.5 rice how, in order to avoid influence the image quality of display frame.
The main component of this silicon-dioxide in this glass substrate, it is by weight percentage normally between 55% to 70%.Silicon-dioxide is one of main material that constitutes in glass, though high-load silicon-dioxide can reach the glass lightweight, the purpose of low thermal expansion, but can increase fused processing temperature and process period, cause the decline of energy dissipation and output, and low excessively silicon-dioxide can produce devitrification (devitrification) phenomenon, and reduce the transparency of glass, the result influences display quality, and the chemically-resistant intensity variation of glass.
The weight percent of this yttrium oxide in this glass substrate is between 0.01% to 10%.Yttrium oxide is an intermediate oxide, helps increasing the glass reticulated structure, can make glass substrate have higher young's modulus, to increase the rigidity of this glass substrate.
The weight percent of this aluminium sesquioxide in this glass substrate is between 10% to 18%.Aluminium sesquioxide content is for reducing the main key of liquidus temperature, yet when the aluminium sesquioxide excessive concentration or cross when hanging down, liquidus temperature all can raise.
The weight percent of this boron trioxide in this glass substrate is between 10% to 15%.Boron trioxide can reduce the glass melt viscosity, and does not increase the coefficient of expansion, and an amount of boron trioxide can increase the hydrofluoric acid resistant ability, and makes it be easy to processing, but when the boron trioxide excessive concentration, will undermine the capacity antacid of glass, and strain point is too low.
The weight percent of this calcium oxide in this glass substrate is between 0% to 10%.The weight percent of this strontium oxide in this glass substrate is between 0% to 4%.The alkaline earth metal oxide composition as calcium oxide and strontium oxide, glass melting can be provided and form the needed positively charged ion of single-phase fused solution, but the too high meeting of alkaline earth metal oxide concentration makes the thermal expansivity of the glass composition that generates too high.On the other hand, if the total amount of alkaline earth metal oxide is low excessively, then glass melting viscosity only can be with the content that increases boron trioxide keeping low value, and can produce not chemical-resistant result of glass.
The weight percent of this lanthanum sesquioxide in this glass substrate is between 0.01% to 9%.Lanthanum sesquioxide easily increases the cancellated characteristic of glass, increases the content of lanthanum sesquioxide, and the raising young's modulus is arranged, and increases the effect of stress temperature.
Adjust each above-mentioned composition composition content and make glass substrate, and measure its various characteristics, listed in result such as the table one, table one is the component list that the present invention makes the constituent of glass substrate.Constituent by four groups of glass substrates in the table one, be respectively A0, A1, A2, A3, wherein only A0 does not add the composition of yttrium oxide, and its young's modulus and stress temperature all do not meet the regulation that the present invention makes glass substrate, and every effect of all the other A1, A2, A3 all meets the regulation that the present invention makes glass substrate.
With table one sight, and based on the taking all factors into consideration of chemistry, physics and melting characteristic, its each component content of good composition then of the present invention is silicon-dioxide (SiO
2), weight percent is between 55% to 70%.Yttrium oxide (Y
2O
3), weight percent is between 0.01% to 10%.Aluminium sesquioxide (Al
2O
3), weight percent is between 10% to 18%.Boron trioxide (B
2O
3), weight percent is between 10% to 15%.Calcium oxide (CaO), weight percent are between 0% to 10%.Strontium oxide (SrO), weight percent are between 0% to 4%.Lanthanum sesquioxide (La
2O
3), weight percent is between 0.01% to 9%.
Table one
| Sample number into spectrum | A0 | A1 | A2 | A3 |
| Constituent | Weight % | Weight % | Weight % | Weight % |
| ?????SiO 2 | 66.3 | 63.3 | 63.8 | 65.0 |
| ?????Al 2O 3 | 15.0 | 15.0 | 15.0 | 15.8 |
| ?????B 2O 3 | 11.0 | 13.0 | 10.5 | 10.5 |
| ?????CaO | 5.6 | 4.6 | 6.6 | 4.6 |
| ?????SrO | 2.0 | 2.0 | 2.0 | 0.5 |
| ?????Y 2O 3 | 0 | 2.0 | 2.0 | 3.5 |
| ?????As 2O 3 | 0.1 | 0.1 | 0.1 | 0.1 |
| Young's modulus Gpa | 71.5 | 72.9 | 75.0 | 75.8 |
| Thermal expansivity * 10 -7 | 38.2 | 36.1 | 31.9 | 31.4 |
| Tempering temperature ℃ | 709.5 | 711.0 | 733.0 | 738.0 |
| Stress temperature ℃ | 645.5 | 651.5 | 674.5 | 679.5 |
According to shown in the table one, the constituent that the present invention makes glass substrate can make the young's modulus (Young ' s modulus) of this glass substrate greater than every square millimeter of 7200 kilograms of (7200kg/mm
2).Make the stress temperature (strain point temperature) of this glass substrate can be higher than 650 ℃.Make the tempering temperature (annealing point temperature) of this glass substrate can be higher than 700 ℃.Make the linear expansivity of this glass substrate can be lower than 31 * 10
-7
Further, at chemical resistant properties, this glass substrate places hydrofluoric acid (HF) solution 20 minutes of concentration expressed in percentage by weight 10% under the environment of 22 degree, the weight loss of this glass substrate in every square centimeter less than 1.0 milligrams.Or this glass substrate places sodium hydroxide (NaOH) solution 360 minutes of concentration expressed in percentage by weight 5% under the environment of 95 degree, the weight loss of this glass substrate in every square centimeter less than 1.0 milligrams.
In addition, constituent as the aforementioned, wherein this glass substrate can add a finings to remove bubble, and wherein this finings can the operating weight percentage range be the white arsenic (As between 0% to 1%
2O
3), or weight percentage ranges is the antimonous oxide (Sb between 0% to 1%
2O
3), or the composition of aforementioned two clarifier compounds, can remove the bubble in this glass substrate.
Therefore, make the constituent of glass substrate by the present invention, as silicon-dioxide (SiO
2), yttrium oxide (Y
2O
3), aluminium sesquioxide (Al
2O
3), boron trioxide (B
2O
3), calcium oxide (CaO), strontium oxide (SrO) and lanthanum sesquioxide (La
2O
3), the composition that cooperates its certain limit, can make this glass substrate have higher young's modulus, lower thermal expansivity, preferable chemical resistant properties, higher stress temperature (strain pointtemperature) and higher tempering temperature (annealing point temperature), and improve the efficient of making glass substrate, and reduce the time of making glass substrate.Particularly higher young's modulus causes the rigidity of this glass substrate preferable, this glass substrate is applicable to makes large-sized flat-panel screens.
By the detailed description of above preferred embodiment, be to wish to know more to describe feature of the present invention and spirit, and be not to come protection scope of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can be contained various changes and equivalence changes.
Claims (10)
1, a kind of in order to make the constituent of glass substrate, it is characterized in that: it is included in silicon-dioxide is that the weight percent that contains yttrium oxide in the main component is between 0.01% to 10%.
2, according to claim 1 in order to make the constituent of glass substrate, it is characterized in that: this constituent also includes between the aluminium sesquioxide 10% to 18%, between the boron trioxide 10% to 15%, between the calcium oxide 0% to 10% and between the strontium oxide 0% to 4%.
3, according to claim 1 in order to make the constituent of glass substrate, it is characterized in that: this constituent also includes between the lanthanum sesquioxide 0.01% to 9%.
4, according to claim 1 in order to make the constituent of glass substrate, it is characterized in that: the young's modulus of this glass substrate is greater than 7200kg/mm
2
5, according to claim 1 it is characterized in that: the stress temperature of this glass substrate is higher than 650 ℃ in order to make the constituent of glass substrate, and the tempering temperature of this glass substrate is higher than 700 ℃.
6, according to claim 1 in order to make the constituent of glass substrate, it is characterized in that: the linear expansivity of this glass substrate is lower than 31 * 10
-7
7, according to claim 1 in order to make the constituent of glass substrate, it is characterized in that: this glass substrate is under 22 ℃ environment, place the hydrofluoric acid solution 20 minutes of concentration expressed in percentage by weight 10%, the weight loss of this glass substrate in every square centimeter less than 1.0 milligrams.
8, according to claim 1 in order to make the constituent of glass substrate, it is characterized in that: this glass substrate is under 95 ℃ environment, place the sodium hydroxide solution 360 minutes of concentration expressed in percentage by weight 5%, the weight loss of this glass substrate in every square centimeter less than 1.0 milligrams.
9, according to claim 1 in order to make the constituent of glass substrate, it is characterized in that: the constituent of this glass substrate comprises that adding a finings removes bubble, and this finings is the finings that is selected from the group that is made up of the antimonous oxide of the white arsenic of weight percent 0% to 1%, weight percent 0% to 1%.
10, according to claim 1 it is characterized in that: this glass substrate is the alkali-free glass substrate that is applied to flat-panel screens in order to make the constituent of glass substrate, and the surfaceness of this glass substrate is less than 0.5 rice how.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156863 CN1594158A (en) | 2003-09-10 | 2003-09-10 | Composition used for manufacturing glass substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156863 CN1594158A (en) | 2003-09-10 | 2003-09-10 | Composition used for manufacturing glass substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1594158A true CN1594158A (en) | 2005-03-16 |
Family
ID=34660112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03156863 Pending CN1594158A (en) | 2003-09-10 | 2003-09-10 | Composition used for manufacturing glass substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1594158A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891382A (en) * | 2010-06-18 | 2010-11-24 | 北京工业大学 | Alumino-borosilicate glass with high strain point |
-
2003
- 2003-09-10 CN CN 03156863 patent/CN1594158A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891382A (en) * | 2010-06-18 | 2010-11-24 | 北京工业大学 | Alumino-borosilicate glass with high strain point |
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