WO2008038780A1 - Composition de verre et article en verre l'utilisant - Google Patents

Composition de verre et article en verre l'utilisant Download PDF

Info

Publication number
WO2008038780A1
WO2008038780A1 PCT/JP2007/069001 JP2007069001W WO2008038780A1 WO 2008038780 A1 WO2008038780 A1 WO 2008038780A1 JP 2007069001 W JP2007069001 W JP 2007069001W WO 2008038780 A1 WO2008038780 A1 WO 2008038780A1
Authority
WO
WIPO (PCT)
Prior art keywords
less
glass composition
glass
composition according
bao
Prior art date
Application number
PCT/JP2007/069001
Other languages
English (en)
Japanese (ja)
Inventor
Haruki Niida
Akihiro Koyama
Yukihito Nagashima
Jaeik Yang
Seoghyun Cho
Original Assignee
Nippon Sheet Glass Company, Limited
Samsung Corning Precision Glass Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Sheet Glass Company, Limited, Samsung Corning Precision Glass Co., Ltd. filed Critical Nippon Sheet Glass Company, Limited
Priority to JP2008536455A priority Critical patent/JP5456317B2/ja
Publication of WO2008038780A1 publication Critical patent/WO2008038780A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/302—Vessels; Containers characterised by the material of the vessel
    • 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

Definitions

  • the present invention relates to a glass composition and a glass article for illumination using the same. Specifically, the present invention relates to a glass composition suitable as a glass article, particularly a tubular or plate-like lighting glass, and a lighting glass article using the same.
  • a soda-lime-based glass composition containing 10 to 20% by mass of sodium oxide has been used as a glass for illumination such as a fluorescent lamp.
  • Mercury is sealed in the tube of the fluorescent lamp. From the glass for lighting made of a soda-lime-based glass composition, sodium may elute over time.
  • the total of Na 0, K 2 and Li 2 O is 13% or less.
  • soda-lime glass compositions inevitably contain iron due to industrial raw materials.
  • Iron oxide contained in the glass acts as a colorant and exists in the form of Fe 2+ and Fe 3+ .
  • Fe 2+ has an absorption peak near the wavelength l lOOnm
  • Fe 3+ has an absorption near the wavelength 400nm.
  • transmittance is an important characteristic. Therefore, not only the content of iron oxide contained in the glass but also the ratio of Fe 2+ to Fe 3+ is important for the transmittance.
  • the glass composition disclosed in JP-A-11-224649 contains 1% by weight or more of SrO, and there is no description about SO. In addition, the inclusion of Sb 2 O and CeO is allowed.
  • Na 2 O is limited to less than 0.1% by weight and SrO is contained by 4% by weight or more. Moreover, the content of CeO is allowed.
  • the glass composition disclosed in Japanese Patent Application Laid-Open No. 2003-073142 does not substantially contain Na 2 O, and there is no description regarding SO. In addition, the inclusion of Sb 2 O and CeO is allowed.
  • the glass composition disclosed in JP-A-2001-243914 contains CeO as an essential component and contains 2% by weight or more of SrO. In addition, the inclusion of Sb 2 O is allowed.
  • the glass composition disclosed in JP-A-2003-171141 has SbO as an essential component.
  • SrO is contained in 2% by mass or more.
  • Fe In the glass composition disclosed in Japanese Patent Application Laid-Open No. 09-012332, there is no description about Fe. BaO is contained in a maximum of 3.5% by weight and SrO is contained in an amount of 1% by weight or more. In addition, it contains Sb 2 O and CeO.
  • SbO is an essential component and SrO is contained at 2% by weight or more.
  • the present invention provides a glass composition that can have an ultraviolet transmittance, a thermal expansion coefficient, a glass transition point, and a softening point, which is preferable as a glass for lighting while suppressing the sodium content in the glass composition.
  • the purpose is to provide. Furthermore, the provision of a glass article using this glass composition will be provided.
  • the present invention is a glass composition comprising SiO, Na 0, K 0, CaO, BaO and SO as essential components, particularly characterized by the content of Na 2 O and KO, Is 0.05% or more and 0.5% or less, and the total iron oxide in terms of Fe 2 O is 0.05% or more and 0.35% or less, and is substantially free of antimony oxide and CeO.
  • a glass composition comprising SiO, Na 0, K 0, CaO, BaO and SO as essential components, particularly characterized by the content of Na 2 O and KO, Is 0.05% or more and 0.5% or less, and the total iron oxide in terms of Fe 2 O is 0.05% or more and 0.35% or less, and is substantially free of antimony oxide and CeO.
  • the present invention is expressed in mass%
  • MgO 0% or more, 10% or less
  • the present invention suppresses the sodium content in the glass composition. Constructing a fluorescent lamp using this glass composition is effective in preventing blackening of the fluorescent lamp because it prevents elution of sodium.
  • the present invention is a glass composition that is preferable as a glass for lighting because it has low ultraviolet light transmittance and substantially does not contain CeO, thereby suppressing solarization. is there.
  • the present invention is a glass composition having a thermal expansion coefficient, a glass transition point, and a softening point, which is preferable as a lighting glass.
  • FIG. 1 is a schematic cross-sectional view of a surface lighting device 1.
  • FIG. 2 is a schematic sectional view of the surface illumination device 2.
  • FIG. 3 is a partially enlarged perspective view of the surface illumination device 3.
  • each component in glass is demonstrated.
  • each content rate is a mass% display, and the ratio of a component is also a mass ratio.
  • SiO is a main component forming a glass skeleton. If the SiO content is less than 65%, the durability of the glass decreases. If it exceeds 75%, it becomes difficult to melt the glass, and the softening point of the glass becomes too high.
  • the lower limit of the SiO content is 65% or more, and more preferably 67% or more.
  • the upper limit of the SiO content is 75% or less, more preferably 72% or less. The SiO range is selected from any combination of these upper and lower limits.
  • Al O is an optional component that improves the durability of glass. If the content of Al O exceeds 5%, melting of the glass becomes difficult and the softening point of the glass becomes too high.
  • the lower limit of the Al 2 O content is 0% or more, more than 0% is preferred, and 0.5% or more is more preferred.
  • the upper limit of the content of Al 2 O is less than 5%, preferably less than 2%, more preferably 1.5% or less.
  • the range of Al O is selected from any combination of these upper and lower limits.
  • B 2 O is an optional component used to improve the durability of the glass or as a melting aid. Exceeding B 2 O force will cause inconvenience during molding due to volatilization of B 2 O, etc.
  • the upper limit is 5%.
  • B O also erodes bricks and shortens kiln life.
  • Na 2 O is used as a glass melting accelerator. When Na 2 O is 3% or less, the melting promotion effect is poor. When Na O exceeds 12%, the durability of the glass decreases, and in particular, This is not preferable because sodium elution, which is a problem in glass for light lamps, increases.
  • the lower limit of the Na 2 O content is over 3%, with 4% or more being preferred and 6% or more being more preferred.
  • the upper limit of the Na 2 O content is less than 12%, preferably 9% or less. The range of Na 2 O is selected from any combination of these upper and lower limits.
  • K 2 O is an essential component used as a glass melting accelerator in the present invention, like Na 2 O. If K 2 O is less than 2%, the effect of promoting melting is poor. Since K 2 O is more expensive than Na 2 O, it is not preferable to exceed 15%.
  • the lower limit of the content of K 2 O is 2% or more, preferably 4% or more, more preferably 5% or more.
  • the upper limit of the content of K 2 O is 15% or less, preferably less than 10%, and more preferably 9% or less.
  • the range of K 2 O is selected from any combination of these upper and lower limits.
  • Li 2 O is not an essential component, but it is used as a glass melting accelerator in the same way as Na 2 O and K 2 O. Further, it is an effective component for adjusting the thermal expansion coefficient and low temperature viscosity, and it is preferable to contain even a trace amount. On the other hand, Li O is more expensive than Na 2 O, so 5% or more is not preferable.
  • the lower limit of the Li 2 O content is 0% or more, preferably more than 0%, more preferably 0.05% or more, and most preferably 0.1% or more.
  • the upper limit of the content of Li 2 O is less than 5%, preferably 3% or less, more preferably 5% or less, and even more preferably less than 1.0%.
  • the range of Li 2 O is selected from any combination of these upper and lower limits.
  • the lower limit of the total of (Na 2 O + K 2 O + Li 2 O) is 6% or more, preferably 10% or more.
  • the upper limit of the total of (Na 2 O + K 2 O + Li 2 O) is 20% or less, preferably 19.5% or less, more preferably 17.5% or less, and further preferably 15% or less.
  • the range of (Na O + K O + Li O) is selected from any combination of these upper and lower limits.
  • the ratio of Na 2 O to K ((Na ⁇ / ⁇ ⁇ ) is important.
  • a large ratio of Na 2 O to ⁇ ⁇ is not preferable because sodium elution increases.
  • a small ratio of Na 2 O to KO is not preferable because expensive KO increases.
  • the lower limit of Na 2 O / K 2 O is preferably more than 0.2, more preferably 0.6 or more, and more preferably 0.9 or more.
  • the upper limit of Na 2 O / K 2 O is less than 3, preferably S, more preferably 2.0 or less, and even more preferably 1.5 or less.
  • the range of Na O / K O is selected from any combination of these upper and lower limits.
  • MgO is not an essential component, but is used to improve the durability of the glass and adjust the devitrification temperature and viscosity during molding. When MgO exceeds 10%, the devitrification temperature rises.
  • the lower limit of the content of MgO is 0% or more, more than 0% is preferably 2% or more, and more preferably 3% or more.
  • the upper limit of the content of MgO is 10% or less, preferably 6% or less, and more preferably 5% or less.
  • the range of MgO is selected from any combination of these upper and lower limits.
  • CaO like MgO, is an essential component used to improve the durability of the glass and adjust the devitrification temperature and viscosity during molding. If CaO is 5% or less, the meltability deteriorates. If it exceeds 15%, the devitrification temperature rises.
  • the lower limit of the CaO content is more than 5%, preferably 6% or more, more preferably more than 6%.
  • the upper limit of the CaO content is 15% or less, preferably 12% or less, and more preferably 10% or less.
  • the range of CaO is selected from any combination of these upper and lower limits.
  • BaO is an essential component used in the present invention to adjust the devitrification temperature and viscosity during glass molding. If BaO is less than 4%, the effect is not sufficient. If BaO exceeds 9%, the density of the glass becomes too high, which is not preferable.
  • the lower limit of the BaO content is 4% or more, and more preferably more than 4%.
  • the upper limit of the BaO content is 9% or less, preferably 7% or less.
  • the range of BaO is selected from any combination of these upper and lower limits.
  • SrO is not an essential component, but it is used to adjust the devitrification temperature and viscosity when forming glass, just like MgO and CaO. Since the SrO raw material is expensive, the SrO content is less than 1% in the glass composition of the present invention.
  • ZnO is not an essential component, but it is used to adjust the devitrification temperature and viscosity when forming glass, just like MgO and CaO. ZnO tends to be non-homogeneous because it tends to volatilize. When glass is formed by the float process, it tends to agglomerate in the low temperature part after volatilization in the float bath. Aggregation of ZnO may cause surface defects of the glass. Therefore, the content is 6% or less, preferably less than 6%, and it is more preferable that ZnO is not substantially contained.
  • the lower limit of the content of (MgO + CaO + SrO + BaO + ZnO) is more than 9%, preferably 10% or more.
  • the upper limit of the content of (MgO + CaO + SrO + BaO + ZnO) is 19% or less, preferably 18% or less, and more preferably 17% or less.
  • the range of (MgO + CaO + SrO + BaO + ZnO) is selected from any combination of these upper and lower limits.
  • the expansion coefficient becomes too large, so it is not preferable that the total exceeds 10%.
  • the upper limit of the content of (SrO + BaO + ZnO) is 10% or less, preferably 7% or less.
  • the lower limit of the content of (SrO + BaO + ZnO) is 4% or more.
  • the range of (SrO + BaO + ZnO) is selected from any combination of these upper and lower limits.
  • TiO is not an essential component, but can be added as long as the object of the present invention is not impaired. If too much TiO is added, the glass tends to be yellowish. For this reason, the inclusion of TiO
  • the upper limit of the percentage is 0.5% or less, more preferably less than 0.1%, and even more preferably less than 0.05%.
  • the lower limit of the content of TiO is 0% or more. The range of TiO is selected from any combination of these upper and lower limits.
  • ZrO is not an essential component, but it is an effective component for improving the durability of the glass and adjusting the devitrification temperature during molding. 2. If it exceeds 5%, it tends to devitrify. ZrO is an expensive raw material and is preferably less than 0.5%. The lower limit of the ZrO content is 0% or more. The upper limit of the content of ZrO is 2.5% or less, preferably less than 0.5%, more preferably less than 0.2%. The ZrO range is selected from any combination of these upper and lower limits.
  • SO is a component that promotes clarification of glass. If it is less than 0.05%, the clarification effect is insufficient with the normal melting method, and the desirable range is 0.1% or more. On the other hand, if it exceeds 0.5%, SO produced by the decomposition will remain in the glass as bubbles, or bubbles are likely to be generated by reboil.
  • the lower limit of the SO content is 0.05% or more, and preferably 0.1% or more.
  • the upper limit of the SO content is 0.5% or less. The range of SO is selected from any combination of these upper and lower limits.
  • the content of iron oxide is 0.05% to 0.35% as total iron oxide (T Fe 2 O 3) in which all the iron contained is converted to Fe 2 O. If the total iron oxide is less than 0.05%, Fe 3+ that absorbs in the ultraviolet region becomes too small, and the ultraviolet transmittance increases. On the other hand, if the total iron oxide exceeds 0.35%, Fe 3+ , which absorbs light in the visible short wavelength region, and too much Fe 2+, which absorbs light on the visible long wavelength side, increase the visible light transmittance. Becomes low.
  • the lower limit of the total iron oxide content is 0.05% or more, and preferably 0.1% or more.
  • the upper limit of the content of total iron oxide is 0.35% or less, and preferably 0.25% or less. The range of total iron oxide is selected from any combination of these upper and lower limits.
  • the iron ratio which is the ratio of FeO in terms of Fe O to the total iron oxide, is called the FeO ratio. There is. If the FeO ratio is less than 10%, too much Fe 3+ has an absorption in the visible short wavelength region, so the visible light transmittance is lowered and the yellow color of the glass becomes too strong. When the Fe 2 O ratio exceeds 40%, too much Fe 2+ is absorbed on the visible long wavelength side, so the visible light transmittance is lowered and the blue color of the glass becomes too strong.
  • the lower limit of the iron ratio is preferably 10% or more, more preferably 15% or more.
  • the upper limit of the iron ratio is preferably 40% or less, more preferably 35% or less. The range of the iron ratio is selected from any combination of these upper and lower limits.
  • Antimony oxide is a component that promotes clarification of glass.
  • glass containing antimony oxide is formed by the float process, for example, the glass is colored by the reducing atmosphere in the float bath. It is also a component that can be a burden on the environment. Therefore, in the present invention, antimony oxide is not substantially contained.
  • CeO is an effective component for suppressing ultraviolet transmittance.
  • solarization occurs due to ultraviolet irradiation, and the visible light transmittance of the glass is lowered. Therefore, CeO is not substantially contained in the present invention.
  • substantially not containing means that the corresponding component is not actively added, and means that contamination as an unavoidable impurity is allowed. Even when the corresponding component is mixed as an unavoidable impurity, the content is preferably less than 0.1%.
  • the glass composition of the present invention may contain components other than the above components and unavoidable impurities as long as the effects of the present invention are not impaired.
  • P O is volatilized
  • Po is not substantially contained.
  • the visible light transmittance is high. Visible light is generated in a fluorescent lamp when the generated ultraviolet light is applied to the phosphor on the inner surface of the fluorescent lamp. The light emission is used. Thus, ultraviolet rays are generated inside the fluorescent lamp. Since it is necessary to reduce the leakage of ultraviolet rays, the transmittance of wavelengths in the ultraviolet region must be kept low. Ultraviolet rays include light with wavelengths such as 254 nm and 313 nm. In the case of soda-lime glass, light with a wavelength of 254 nm is hardly transmitted, and therefore need not be considered.
  • the transmission of light having a wavelength of 313 nm needs to be controlled, and can be controlled mainly by the contents of Fe 2 O and titanium oxide in the total iron oxide.
  • the transmittance of light with a wavelength of 313 nm (glass thickness: 0.7 mm) is preferably 60% or less, and more preferably 45% or less.
  • This sealing glass is used for sealing an electrode inserted into the interior in the case of internal electrode type illumination, and is used for laminating sheet glass to form a glass container in the case of a surface illumination device. .
  • the glass container for lighting When the glass container for lighting is tubular, it is directly formed into a tubular shape from molten glass, or once formed into a tubular shape, it is heated to a temperature at which it is softened again and reshaped into a U-shape.
  • the plate-like glass in order to form a glass container for illumination, the plate-like glass may be heated to a temperature at which it is softened again and used for press molding or the like. Therefore, it is preferable that the softening point is low so that the work can be easily performed in the molding by heating and reheating. It is desirable that the softening point is not so high compared to that of the current soda-lime glass composition.
  • the softening point is preferably 790 ° C or lower, about 50 ° C higher than the softening point of the soda-lime glass composition, and more preferably 750 ° C or lower, about 10 ° C higher. Furthermore, it is below the softening point of the current soda-lime glass composition. Most preferably below ° C.
  • glass transition point In terms of glass transition point, less than 630 ° C is desirable, and less than 600 ° C is more desirable, with 565 ° C or less being most desirable.
  • (softening point glass transition point) is a parameter serving as an index of the cooling rate after re-forming by reheating.
  • the cooling rate is given as a value obtained by dividing (softening point glass transition point) by the time required for cooling from the softening point to the glass transition point.
  • the (softening point glass transition point) of the glass composition of the present invention is larger than the (softening point-glass transition point) of the current soda-lime-based glass composition.
  • (softening point-glass transition point) in Examples described later is a value exceeding 180 ° C.
  • the value is 179 ° C or lower.
  • the cooling rate can be increased as compared with the comparative example. That is, for the glass composition of the present invention, it is possible to increase the cooling rate during the reshaping process as compared with the conventional case.
  • the glass composition of the present invention can be formed into tubular glass or sheet glass.
  • the glass composition of the present invention which is desired to be a float method capable of being manufactured at low cost and in large quantities, can be applied to the float method as a method for forming a sheet glass.
  • the specific molding method may be in accordance with a known method.
  • the glass composition of the present invention for example, as described above, using a glass article formed into a plate shape by a float method or the like, or a glass article formed into a container shape, and an illumination device such as a fluorescent lamp according to a known method (example: , Surface lighting devices, tubular fluorescent lamps, and the like).
  • an illumination device such as a fluorescent lamp according to a known method (example: , Surface lighting devices, tubular fluorescent lamps, and the like).
  • Raw material batches (hereinafter sometimes referred to as batches) were prepared so that the glass compositions shown in Tables 1 to 3 were obtained.
  • the raw materials used were those used for normal glass production.
  • UV transmittance (313nm) 34.0 ⁇ ⁇ ⁇ ⁇ 36.0 ⁇ ⁇ Visible light transmittance W) 91.4 ⁇ ⁇ One ⁇ One ⁇ 91.4 ⁇ ⁇ 2]
  • UV transmittance (313nm) 36.0 1— 1 — — 77.1 Visible light transmittance (%) 91.3 89.3 —— ——— —
  • the formulated batch was melted and clarified in a platinum crucible.
  • the crucible was held in an electric furnace set at 1500 ° C. for 4 hours to melt the batch.
  • the glass melt was poured onto an iron plate to obtain a plate-like glass body.
  • This glass body is set to another electric power set to 650 ° C.
  • the transmittance of the obtained sample glass was measured with a spectrophotometer (manufactured by Hitachi, Ltd., U4100) using A light source.
  • the thickness of the glass substrate was 0.7 mm.
  • As a measure of the ultraviolet transmittance the transmittance of light having a wavelength of 313 nm was measured.
  • the visible light transmittance is J
  • composition of the obtained sample glass was quantitatively analyzed using fluorescent X-ray analysis and chemical analysis.
  • the thermal expansion coefficient of some of the obtained sample glasses was measured with a differential thermal dilatometer (manufactured by Rigaku, TAS-100).
  • the sample size is 5 mm in diameter and 17 mm in length.
  • the sample is measured from room temperature to the yield temperature at a heating rate of 5 ° C / min, and the coefficient of thermal expansion is in the range of 50 ° C to 300 ° C. Calculated.
  • the intrusion indenter of the obtained sample glass was lowered to a flat sample with a constant load, and the viscosity was calculated from the penetration speed of the indenter to obtain the softening point.
  • the glass transition point was determined from the inflection point in the thermal expansion curve determined by the above-described measurement of the thermal expansion coefficient.
  • the sample glass pulverized to a particle size of 1.0 to 2.8 mm is placed in a platinum boat and held in an electric furnace with a temperature gradient for 2 hours. From the maximum temperature at which the crystal appears, devitrification occurs. The temperature was determined.
  • the viscosity of the glass was determined by the ordinary platinum ball pulling method, and the temperature (forming temperature) at which the viscosity of the glass reached 10000 dPas (10000 poise) was determined.
  • Comparative Example 1 is a general soda-lime glass composition for sheet glass. It contains a large amount of Na 2 O as 13.1% and is outside the glass composition range of the present invention. Also, it contains almost no K 2 O and Na 2 O / K 2 O is 15.1.
  • Comparative Example 2 is a soda-lime-based glass composition containing a large amount of iron for a general plate glass.
  • Comparative Example 3 is a glass composition disclosed in Example 8 of JP-A-05-314169, and does not contain SO as a fining agent but contains Sbo.
  • Comparative Example 4 is a glass composition shown in Example 7 of JP-A-11 224649, and is a glass composition having a small content of alkali metal oxide and a small content of CaO.
  • Comparative Example 5 is a glass composition containing Sb 2 O as a fining agent and having a very small FeO ratio.
  • Comparative Examples 3 and 4 are examples that do not contain SO! /. Comparative Examples 3 and 4 contain V as a fining agent, and both contain Sb 2 O, and Comparative Example 4 further contains CeO. When the glass compositions of Comparative Examples 3 and 4 are molded by the float process, they are colored brown by the reducing atmosphere in the float bath. Furthermore, in Comparative Example 4, it is colored yellow by irradiation with ultraviolet rays.
  • Application Example 1 is a surface illumination device in which a casing is formed using the glass substrate described above.
  • Figure 1 shows a schematic cross-sectional view of a surface illumination device according to Application Example 1.
  • the surface lighting device 1 A flat first glass substrate 11 and a second glass substrate 12 press-molded in a U-shaped cross section are joined together by a glass frit 13 to form a casing, and the inside is a space S.
  • a pair of discharge electrodes 14 and 14 are provided at both ends inside the housing.
  • phosphors 15 and 15 are coated on the surfaces facing the space S in the first glass substrate 11 and the second glass substrate 12.
  • mercury and an inert gas such as argon are sealed in the space S inside the housing.
  • the glass substrate according to the present invention has a feature that the content of sodium is suppressed, so that the surface illumination device 1 configured using the glass substrate is less susceptible to blackening due to sodium elution.
  • Application Example 2 uses the above-mentioned two glass substrates and provides a large number of partition walls between them to form a large number of cells to form a surface illumination device.
  • Figure 2 shows a schematic cross-sectional view of a surface illumination device according to Application Example 2.
  • the surface lighting device 2 holds two glass substrates 21 and 22 at a constant interval, and provides a large number of partition wall portions 23 ⁇ (where ⁇ ⁇ ⁇ represents a large number) between them, Cell S is constructed. Further, phosphors 25 and 25 are coated on the surfaces of the glass substrates 21 and 22 facing the cell S. Further, the cell S is sealed with mercury and an inert gas such as argon.
  • the surface illumination device 2 is caused to discharge by applying voltage to an electrode (not shown) to function as a light source.
  • Application Example 3 is a surface illumination device having a structure in which a large number of cells are provided as in Application Example 2.
  • the force S provided with a large number of partition walls to separate a large number of cells
  • one glass substrate is press-molded to form a large number of ridges, and the joining portion becomes the partition wall part. It is like that.
  • FIG. 3 is a partially enlarged perspective view of the surface illumination device 3 according to the application example 3.
  • the surface illumination device 3 is configured by first joining a flat plate-like first glass substrate 31 and a second glass substrate 32 formed by press molding into a shape in which a large number of ridges are arranged in parallel to constitute a large number of cells S. is there.
  • the first gala A bonding portion 33 of the second glass substrate 32 bonded to the glass substrate 31 serves as a partition wall.
  • phosphors 35 and 35 are coated on the surfaces of the glass substrates 31 and 32 facing the cell S.
  • the cell S is filled with mercury and an inert gas such as argon.
  • the surface illumination device 3 is discharged by applying a voltage to an electrode (not shown) to function as a light source.
  • Glass articles obtained by molding the glass composition of the present invention are useful as lighting glasses such as phosphors.

Landscapes

  • 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)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

La présente invention concerne une composition de verre ayant une teneur réduite en sodium et ayant un facteur de transmission des rayons UV, un coefficient de dilatation thermique, une température de transition vitreuse et une température de ramollissement dans des gammes appropriées pour une utilisation en tant que verre électrique. La présente invention concerne plus spécifiquement une composition de verre comprenant SiO2, Na2O, K2O, CaO et SO3 en tant qu'ingrédients essentiels, qui est caractéristique des teneurs en Na2O et K2O, qui contient SO3 en une quantité de 0,05 à 0,5 % en masse inclus et des oxydes de fer en une quantité totale de 0,05 à 0,35 % en masse inclus en ce qui concerne Fe2O3, et qui ne contient pratiquement aucun oxyde d'antimoine ou CeO2.
PCT/JP2007/069001 2006-09-28 2007-09-28 Composition de verre et article en verre l'utilisant WO2008038780A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008536455A JP5456317B2 (ja) 2006-09-28 2007-09-28 ガラス組成物およびそれを用いたガラス物品

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006266065 2006-09-28
JP2006-266065 2006-09-28

Publications (1)

Publication Number Publication Date
WO2008038780A1 true WO2008038780A1 (fr) 2008-04-03

Family

ID=39230212

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/069001 WO2008038780A1 (fr) 2006-09-28 2007-09-28 Composition de verre et article en verre l'utilisant

Country Status (2)

Country Link
JP (1) JP5456317B2 (fr)
WO (1) WO2008038780A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03290335A (ja) * 1990-04-04 1991-12-20 Nippon Sheet Glass Co Ltd ガラス製パネル
US5977001A (en) * 1996-12-17 1999-11-02 General Electric Company Glass composition
JP2000203873A (ja) * 1998-02-10 2000-07-25 Matsushita Electronics Industry Corp ランプ用ガラス組成物、ランプ用ステムおよびランプ用バルブ
JP2002293547A (ja) * 2001-03-28 2002-10-09 Asahi Glass Co Ltd 陰極線管用ガラスの製造方法
JP2002308644A (ja) * 2001-04-04 2002-10-23 Nippon Electric Glass Co Ltd 電灯用ガラス
JP2004035389A (ja) * 2002-01-10 2004-02-05 L Electric Glass Co Ltd 本質的に無鉛のガラスおよびそれから作製されたガラス管

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10152339A (ja) * 1996-09-27 1998-06-09 Nippon Sheet Glass Co Ltd 耐熱性ガラス組成物
JP3957348B2 (ja) * 1996-11-21 2007-08-15 日本板硝子株式会社 防火用板ガラス
JPH11233033A (ja) * 1997-11-17 1999-08-27 Nippon Electric Glass Co Ltd プラズマディスプレイ用基板ガラス
JP2000290038A (ja) * 1999-02-01 2000-10-17 Nippon Electric Glass Co Ltd 蛍光ランプ用ガラス、蛍光ランプ用ガラス管、及び蛍光ランプ
JP2003178712A (ja) * 2002-09-09 2003-06-27 Matsushita Electric Ind Co Ltd 蛍光ランプ
FR2876094B1 (fr) * 2004-10-04 2009-01-09 Saint Gobain Substrat en verre pour ecran de visualisation.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03290335A (ja) * 1990-04-04 1991-12-20 Nippon Sheet Glass Co Ltd ガラス製パネル
US5977001A (en) * 1996-12-17 1999-11-02 General Electric Company Glass composition
JP2000203873A (ja) * 1998-02-10 2000-07-25 Matsushita Electronics Industry Corp ランプ用ガラス組成物、ランプ用ステムおよびランプ用バルブ
JP2002293547A (ja) * 2001-03-28 2002-10-09 Asahi Glass Co Ltd 陰極線管用ガラスの製造方法
JP2002308644A (ja) * 2001-04-04 2002-10-23 Nippon Electric Glass Co Ltd 電灯用ガラス
JP2004035389A (ja) * 2002-01-10 2004-02-05 L Electric Glass Co Ltd 本質的に無鉛のガラスおよびそれから作製されたガラス管

Also Published As

Publication number Publication date
JP5456317B2 (ja) 2014-03-26
JPWO2008038780A1 (ja) 2010-01-28

Similar Documents

Publication Publication Date Title
JP7036168B2 (ja) 無アルカリガラス基板
EP0795522B1 (fr) Composition de verre pour un substrat
US7968380B2 (en) Semiconductor encapsulation material and method for encapsulating semiconductor using the same
JPH0340933A (ja) 基板用ガラス組成物
JP2007238398A (ja) ソーダ石灰系ガラス組成物
EP1653499B1 (fr) Tube de verre pour lampe fluorescente a electrode exterieure
US5459109A (en) Substrate glasses for plasma displays
JPH08290938A (ja) 基板用ガラス
WO2012002174A1 (fr) Verre sans plomb pour rendre étanche un semi-conducteur
JP2002137935A (ja) 蛍光ランプ用ガラス、蛍光ランプ用ガラス管及び蛍光ランプ
JPWO2006106660A1 (ja) ランプ用ガラス組成物、ランプ、バックライトユニットおよびランプ用ガラス組成物の製造方法
JP5762515B2 (ja) ガラス組成物およびそれを用いたガラス物品
JPWO2007086441A1 (ja) ランプ用ガラス組成物の製造方法、ランプ用ガラス組成物およびランプ
JP3748533B2 (ja) 低融点ガラス及びその製造方法
JPH08290939A (ja) 基板用ガラス
WO2006013680A1 (fr) Verre sans plomb pour revêtir une électrode à lampe plate fluorescente et lampe plate fluorescente
JP2008305711A (ja) プラズマディスプレイパネル用ガラス基板の製造方法及びプラズマディスプレイパネル用ガラス基板
JPH1025129A (ja) 基板用ガラス
JPH1025130A (ja) 基板用ガラス
JPH1025128A (ja) 基板用ガラス
JP5456317B2 (ja) ガラス組成物およびそれを用いたガラス物品
JPH11322358A (ja) 耐熱性ガラス組成物
JP2001220175A (ja) 蛍光ランプ用タングステンシールガラス
JP2003073142A (ja) 照明用ガラス組成物
JP2002060241A (ja) タングステン封着用ガラス

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07828742

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2008536455

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07828742

Country of ref document: EP

Kind code of ref document: A1