WO2006106660A1 - 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 - Google Patents
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 Download PDFInfo
- Publication number
- WO2006106660A1 WO2006106660A1 PCT/JP2006/306253 JP2006306253W WO2006106660A1 WO 2006106660 A1 WO2006106660 A1 WO 2006106660A1 JP 2006306253 W JP2006306253 W JP 2006306253W WO 2006106660 A1 WO2006106660 A1 WO 2006106660A1
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- WO
- WIPO (PCT)
- Prior art keywords
- glass
- glass composition
- lamp
- l0wt
- composition
- Prior art date
Links
- 239000011521 glass Substances 0.000 title claims abstract description 191
- 239000000203 mixture Substances 0.000 title claims abstract description 91
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 150000002500 ions Chemical class 0.000 claims abstract description 31
- 238000002844 melting Methods 0.000 claims description 19
- 230000008018 melting Effects 0.000 claims description 19
- 229910001963 alkali metal nitrate Inorganic materials 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 15
- 238000009792 diffusion process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 230000002378 acidificating effect Effects 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 8
- 150000001768 cations Chemical class 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 229920005668 polycarbonate resin Polymers 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000004431 polycarbonate resin Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000004040 coloring Methods 0.000 abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 3
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 abstract 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 2
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 abstract 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 12
- 239000004973 liquid crystal related substance Substances 0.000 description 11
- 239000000156 glass melt Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 238000002834 transmittance Methods 0.000 description 10
- 239000007800 oxidant agent Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 239000005388 borosilicate glass Substances 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 238000002845 discoloration Methods 0.000 description 5
- 239000004417 polycarbonate Substances 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 229910000833 kovar Inorganic materials 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002981 blocking agent Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000004031 devitrification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- PQZSQOYXZGDGQW-UHFFFAOYSA-N [W].[Pb] Chemical compound [W].[Pb] PQZSQOYXZGDGQW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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
- C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
-
- 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
- C03C3/089—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
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
-
- 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
- C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
- C03C4/085—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths for ultraviolet absorbing glass
-
- 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
-
- 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
Definitions
- Lamp glass composition lamp, backlight unit, and method for producing glass composition for lamp
- the present invention relates to a glass fiber composite for a lamp, a lamp, a knocklight unit, and a method for producing a glass composition for a lamp.
- Lamps are used as light sources for knock lights such as liquid crystal display devices.
- the glass nozzle of the lamp is formed with a small diameter and a thin wall. Therefore, the glass bulb is generally made of borosilicate glass.
- Borosilicate glass is superior in heat resistance because it has a higher softening point and a lower coefficient of thermal expansion than soda-lime glass. Therefore, even if the glass bulb is formed with a small diameter and a thin wall, it is difficult to be thermally deformed at a high temperature in the phosphor film firing step. Borosilicate glass is excellent in mechanical strength with high Young's modulus and Vickers hardness. Therefore, even if the glass noble is formed with a small diameter and a thin wall, it is difficult to break.
- borosilicate glass contains B 1 O in an amount of 1 lwt% or more in terms of oxides.
- the glass for lamps needs UV blocking performance to prevent the ultraviolet rays generated inside the lamp from leaking to the outside, and UV-resistant solarization performance to suppress glass coloring (solarization) by UV rays. It is.
- an ultraviolet blocking agent such as TiO, ultraviolet blocking is performed.
- Patent Document 1 Japanese Patent Laid-Open No. 9 77529
- Patent Document 2 JP 2001-220175 A
- Patent Document 3 Japanese Patent Laid-Open No. 2002-60240 Disclosure of the invention
- a glass composition for a lamp according to the present invention is a glass composition for a lamp containing Mo ions in its components, and is substantially equivalent to an oxide.
- the hexavalent Mo ions (Mo 6+ ) and the other valence Mo ions (Mo ° thCT ) are expressed in the following relationship in terms of the percentage of cations .
- Another specific aspect of the glass composition for a lamp according to the present invention is characterized in that it is oxidizable in a molten state.
- the MoO is an oxide
- the force is in the range of 34-43 X 10 _7 ⁇ .
- Force is in the range of 3 ⁇ 55 X 10 _7 ⁇ .
- a lamp according to the present invention includes a glass bulb formed of the above glass composition. It is characterized by that.
- the backlight unit according to the present invention is characterized in that the lamp is mounted.
- the backlight unit includes a plurality of the lamps and a diffusion plate made of polycarbonate resin disposed on the light emission side of the lamps.
- the composition of the glass composition is substantially in terms of oxides: SiO: 55 to 75 wt%, BO: ll to 25 wt%, MoO: 0.3 to 1.
- a part of the glass raw material prepared in the preparation step is an alkali metal nitrate, and the alkali metal nitrate is melted. By doing so, the glass composition in the melt state in the melting step becomes acidic.
- the alkali metal nitrate is one or both of NaNO and KNO.
- the glass composition for a lamp of the present invention contains 0.3 to 1.4 wt% MoO in terms of oxide.
- the hexavalent Mo ion (Mo 6+ ) and the other valence Mo ion (Mo QthCT ) are expressed in terms of the cation percentage as follows:
- the glass composition for a lamp according to the present invention when in a molten state and is acidic, it has less coloring with less Mo ions having a valence other than hexavalent.
- the glass composition for a lamp according to the present invention has MoO of 1.1 ⁇ % or less in terms of oxide.
- an acrylic resin diffuser is used in a backlight unit of an LCD TV.
- the diffusion plate made of acrylic resin is prone to warp due to moisture absorption and becomes large, dimensional error becomes a problem. Therefore, the backlight unit of large LCD TVs with screen sizes exceeding 17 inches ⁇
- a diffusion plate made of PC (polycarbonate) resin is used.
- the diffusion plate made of PC resin has a more severe discoloration due to the ultraviolet ray of 313 nm compared to the diffusion plate made of acrylic resin.
- Conventional lamp glass can sufficiently block 186nm and 254nm UV rays among the ultraviolet rays that also emit mercury power. Leakage of 313nm UV light causes the PC resin diffuser and diffusion sheet to fade and deteriorate, and the brightness of the backlight unit decreases.
- WO or TiO is added to the glass to suppress the transmission of ultraviolet rays at 313 nm.
- WO and TiO have properties that increase the crystallinity of glass.
- the glass can be devitrified (a phenomenon of loss of transparency) during melting or thermal processing during lamp production.
- MoO is 1. lwt in terms of oxide.
- the glass composition for a lamp according to the present invention has a coefficient of thermal expansion (H) of 34 to 43 X 10 _7 Z. In the case of k or 43 to 55 X 10 _7 Zk, the following effects are obtained.
- a knocklight lamp uses a lead wire made of tungsten or Kovar alloy that can withstand the high temperatures caused by discharge. Therefore, in order to increase the reliability of the hermetic seal of the lead-in wire, it is preferable to make the thermal expansion coefficient of glass close to that of tungsten or Kovar alloy.
- the thermal expansion coefficient is similar to that of the tungsten lead wire, and its chemical durability is high, so the reliability of hermetic sealing of the lead wire is high.
- a lamp according to the present invention includes a glass nozzle formed of the above glass composition. Therefore, the lamp light flux is high because the glass bulb is less colored and the visible light transmittance is high.
- the backlight unit according to the present invention has a high luminance because the lamp luminous flux is high and the lamp is mounted.
- the backlight unit according to the present invention includes a glass to which MoO is added in an amount of 1. lwt% or more.
- high-definition LCD TVs have advanced! /
- high-definition LCD TVs have a lower aperture ratio than ordinary LCD TVs and require higher surface brightness.
- Increase the surface brightness of the backlight unit by increasing the number of lamps.
- the surface brightness of the knocklight unit is increased, the amount of UV light at 313 nm increases accordingly, and the diffuser, reflector, etc. deteriorate * the discoloration becomes severe, and the surface brightness of the knocklight unit is further increased. It tends to decrease.
- the backlight unit according to the present invention such a decrease in surface brightness is unlikely to occur.
- the backlight unit according to the present invention has a lower surface luminance. Since it hardly occurs, the life of the liquid crystal television can be extended.
- the glass composition strength MoO that forms the glass bulb is less than 1. lwt% in terms of oxide.
- the glass composition in the melt state is made acidic in the melting step, so that the coloring of the glass composition can be further reduced. That is, if the glass composition in the melt state is made acidic in the melting process, when hexavalent Mo ions are reduced to Mo ions having a valence other than hexavalent! /, The valence of the resulting Mo ions Changes (hereinafter simply referred to as “valence changes”) can be effectively suppressed. Therefore, the amount of Mo ions with a valence other than hexavalent is small, and the glass is less colored.
- the present manufacturing process is the same as the conventional one without adding a new process.
- the glass composition according to the invention can be produced.
- the glass composition can be produced at a relatively low cost.
- FIG. 1 shows the composition and properties of a glass composition according to an embodiment of the present invention.
- FIG. 2 is a schematic view showing a main configuration of a cold cathode fluorescent lamp according to an embodiment of the present invention.
- FIG. 3 is a schematic view showing a main configuration of a backlight unit according to an embodiment of the present invention.
- a glass composition for a lamp, a lamp, a knocklight unit, and a method for producing the glass composition for a lamp according to an embodiment of the present invention will be described with reference to the drawings.
- composition of the glass composition according to the embodiment is in terms of acid oxide, No. 1 in FIG.
- composition of the glass composition according to the present invention is not limited to the compositions shown in No. 1 to No. 5, but in order to maintain the characteristics as glass for a lamp, In terms of oxide
- SiO 55 to 75 wt%
- B O l l to 25 wt%
- MoO 0.3 to 1.4 wt%
- Al O 1 to
- SiO is a main component that forms a network structure of glass, and its content is 55 to 75 wt%.
- SiO is less than 55wt%, the chemical durability of the glass will be insufficient.
- SiO 75
- B 2 O is a component that forms a network structure of glass, and its content is from l to 25 wt%.
- the amount of evaporation of the soot component increases, and it is difficult to obtain a uniform glass.
- the coefficient of thermal expansion becomes too small, making it difficult to seal the lead-in wire.
- MoO is an essential component of the glass composition according to the present invention.
- UV rays at 186 nm and 254 nm can be sufficiently blocked.
- MoO When 1. lwt% or more is added, it is possible to sufficiently block 313 nm ultraviolet rays.
- Mo ions are included in the glass in the state of 2 to 6 valences !, or in a misaligned state! /, Even though the glass is provided with UV blocking performance and UV solarization resistance, It is hexavalent Mo ions that do not cause coloring of the glass.
- the melt glass is made acidic when the glass raw material is melted, the change in the valence of Mo ions in the melt glass is suppressed. Ions are held in a hexavalent state.
- the glass tends to be colored brown. This is because if the amount of Mo ions having a valence other than hexavalent increases as the total amount of Mo ions increases, it becomes difficult to suppress coloring only by suppressing the change in the valence of Mo ions.
- Al O is a component that forms a network structure of glass, and its content is 1 to: L0wt%
- Na 0, K ⁇ and Li O which are alkali metal oxides, function in the network structure of glass.
- Li O content is 0-5wt%, Na O content is 0-8wt%, K2O content is 0-1
- the viscosity of the glass becomes too high, making it difficult to melt and form the glass.
- the total is more than 10 wt%, the alkali durability in the glass elutes on the glass surface, resulting in a decrease in chemical durability.
- the coefficient of thermal expansion becomes too large, making it difficult to seal the lead-in wire.
- alkali metal oxides are used as oxidizing agents. It is added in the form of nitrate.
- the amount of alkali metal nitrate added as an oxidizer is higher than the amount of MoO added.
- the amount percentage is preferably 0.5 times or more.
- Alkaline earth metal oxides MgO, CaO, SrO and BaO are components that impart functions to the glass network structure. When these alkaline earth metal oxides are added, the glass has a low viscosity, which facilitates glass melting and molding. In addition, the thermal expansion coefficient of the glass increases.
- MgO content is 0-5wt%
- CaO content is 0-10wt%
- SrO content is 0-1Owt%
- BaO content is 0-: L0wt%
- the total content of BaO is 1 to: L0wt%. If the total is less than lwt%, the viscosity of the glass becomes too high, making it difficult to melt and mold the glass. In addition, the chemical durability of the glass decreases. On the other hand, if the total exceeds 10 wt%, the coefficient of thermal expansion becomes too large, making it difficult to seal the lead-in wire.
- the glass composition may be Sb 2 O, ZnO, ZrO, PO, TiO, P
- It may contain a metal oxide such as 2 3 2 5 2 bO or As O.
- TiO increases the crystallinity of the glass and causes devitrification.
- PbO and As O are substances that have an impact on the environment, and increase the cost of raw materials at high costs.
- a plurality of types of glass raw materials are blended so that the glass after melting falls within the composition range according to the present invention.
- the prepared glass raw material is put into a glass melting furnace and melted at 1500 to 1600 ° C. to vitrify to obtain a glass melt.
- an alkali metal nitrate is blended as part of the glass raw material.
- the alkali metal nitrate serves as an oxidizing agent in the glass melt in the melting step, so that the glass melt becomes acidic and suppresses the change in the valence of Mo.
- a Examples of the rucuric acid nitrate include NaNO and KNO. NaNO
- Either 3 3 3 or KNO may be used, or both may be used.
- the method of making the glass melt acidic is not limited to the method using an alkali metal nitrate, and the glass melt can be oxidized by adding another oxidant compound.
- alkali metal nitrates are not limited to NaNO and KNO,
- alkali metal nitrates may also be used.
- Oxidizing agents such as alkali metal nitrates are not less than 0.5 times the amount of MoO added by weight.
- the glass melt may not be sufficiently acidic, and the valence change of Mo ions may not be sufficiently suppressed.
- the glass melt is formed into a tubular shape by a tube drawing method such as the Danner method, and cut into a predetermined size to produce a glass tube for a lamp. Sarasako, the glass tube is heat-processed to produce glass bulbs and various lamps.
- a glass melt obtained by melting a glass raw material in a melting kiln and a glass melt is cooled to a glass composition and then melted by heating again to be in a molten state.
- FIG. 2 is a schematic diagram showing the main configuration of a cold cathode fluorescent lamp according to an embodiment of the present invention.
- the structure of the cold cathode fluorescent lamp 1 basically conforms to the structure of the cold cathode fluorescent lamp according to the prior art.
- the glass bulb 2 of the cold cathode fluorescent lamp 1 is formed of the above glass composition, and has an outer diameter of about 4. Omm, an inner diameter of about 3.4 mm, and an overall length of about 730 mm.
- the glass valve 2 is prepared by putting raw materials prepared to have a predetermined composition into a glass melting kiln, melting them at 1500-1600 ° C and vitrifying them, and then using a tube bow I method such as the Danner method. Molded into a tube, cut into a predetermined size, and a glass tube is obtained by thermal processing.
- Various lamps can be produced by a normal method using this glass tube.
- the outer diameter, inner diameter, and overall length of the glass nozzle 2 are not limited to the above, but the cold cathode Since the glass bulb 2 for the fluorescent lamp 1 is desired to be thin and thin, the outer diameter should be from 1.8 (inner diameter is 1.4) to 6.0 (inner diameter is 5.0) mm. preferable.
- Both ends of the glass bulb 2 are hermetically sealed by the bead glass 3. Further, both ends of the glass nozzle 2 are hermetically sealed so as to penetrate the lead wire 4 force bead glass 3 having a diameter of about 0.8 mm, which also has tungsten metal or Kovar alloy force. Further, the lead wire 4 is attached with a cup-shaped electrode 5 made of nickel or niobium, and coated with an electron-emitting substance on the end portion on the side of the glass bulb 2 disposed in the tube. ing.
- the bead glass 3, the lead-in wire 4, and the electrode 5 are not limited to those having the above configuration.
- red, green and blue phosphors (Y O: Eu,
- the cold cathode fluorescent lamp according to the present invention has been specifically described based on the embodiment, but the content of the present invention is not limited to the above embodiment.
- FIG. 3 is a schematic diagram showing the main configuration of a direct-type backlight unit according to an embodiment of the present invention.
- the structure of the direct-type backlight unit 10 according to an embodiment of the present invention basically conforms to the structure of the backlight unit according to the prior art.
- the envelope 11 is made of white PET (polyethylene terephthalate) resin, and includes a substantially rectangular reflecting plate 12 and a plurality of side plates 13 arranged so as to surround the reflecting plate 12. Inside the envelope 11, a plurality of cold cathode fluorescent lamps 1 arranged in parallel at equal intervals are stored, and the cold cathode fluorescent lamps are in close proximity to the reflector 12 and are reflected in the same manner.
- the plate 12 is held in the horizontal lighting direction.
- a diffusion plate 14 formed of PC resin is disposed so as to face the reflection plate 12 with the cold cathode fluorescent lamp 1 interposed therebetween.
- the diffuser plate 14 side is the light emission side of the backlight unit 10 with respect to the cold cathode fluorescent lamp 1
- the reflector 12 side is with respect to the cold cathode fluorescent lamp 1.
- Back light The light reflection side of the knit 10.
- a diffusion sheet 15 formed of PC resin and a lens sheet 16 formed of acrylic resin are arranged so as to overlap each other.
- the LCD panel 17 of the liquid crystal television is installed on the light emitting side of the lens sheet 16.
- the knock light unit 10 is not limited to the one having the above configuration.
- the envelope 11 has a horizontal width of about 408 mm and a vertical width of about 10. The depth is set to about 728mm and the depth dimension is about 19mm.
- 16 cold cathode fluorescent lamps 1 are arranged with an interval of about 25.7 mm, respectively.
- the cold cathode fluorescent lamp 1 has an overall length of about 730 mm, and the glass bulb 2 has an outer diameter of about 4. Omm and an inner diameter of about 3.4 mm.
- the lens sheet 16 can obtain a surface brightness of about 8000 cdZm 2 .
- glasses with the composition shown in Fig. 1 were prepared and the properties of these glasses were evaluated.
- glass raw materials are prepared so that the composition shown in Fig. 1 is obtained, put into a platinum crucible, heated and melted at 1500 ° C for 3 hours in an electric furnace, sufficiently clarified, and the glass is carbon-type. Pour into the block or some! , Was formed into a plate shape and cooled in an electric furnace.
- a glass sample was prepared by polishing a plate-like glass having a diameter of 20 mm and a thickness of 2 mm until both surfaces were mirror-finished, and the ultraviolet transmittance of the glass sample (T) was 254 nm.
- the transmittance (T 1) of ultraviolet rays at 313 nm was measured using a spectrophotometer.
- the UV blocking performance was evaluated based on T and T. Specifically, T is
- T is less than 5.0%, it is judged as “ ⁇ ”, and T is less than 1.0%.
- a glass sample was prepared by polishing a plate glass having a diameter of 20 mm and a thickness of 2 mm until both surfaces became mirror surfaces, and the visible light transmittance of 400 nm of the glass sample (T) And the transmittance (T) of visible light at 550 nm were measured using a spectrophotometer.
- T and T are both 85
- At least one of 400 550 400 and T is 80% or more and less than 85%, and the ratio ⁇ / ⁇ is 0.
- a glass sample with a diameter of 5 mm and a length of 1 column was prepared, and the difference in thermal expansion from a standard quartz glass sample with a thermal expansion coefficient was measured.
- a glass sample pulverized to a particle size of about 2 mm was placed in a temperature gradient furnace set to 500 to: L0 00 ° C, left for 4 hours, then taken out and observed for crystals.
- the temperature range for precipitation was 700 to 800 ° C, it was judged as “ ⁇ ”, and when it was below 700 ° C or above 800 ° C, it was judged as “X”.
- Conventional examples 1 and 2 are glasses having the same composition as conventional glass. Conventional examples 1 and 2 have UV-blocking performance, but contain TiO.
- Examples 1 to 5 are glasses according to the present invention. In Examples 1 to 5, the content of MoO is
- Examples 3-5 are suitable for use as a glass for a knock light lamp of a display device such as a liquid crystal because they sufficiently block ultraviolet rays of 313 nm.
- Comparative Example 1 has a high transmittance of 254 nm ultraviolet light because the MoO content is too low.
- Comparative Example 2 has a low visible light transmittance because the MoO content is too high. Therefore
- the glass is colored and unsuitable for use in lamps.
- the glass composition for a lamp of the present invention can be widely used for all lamps. It is particularly suitable for knocklight cold-cathode fluorescent lamps for liquid crystal display devices that require high-quality display, such as liquid crystal TVs, displays for computers, and liquid crystal panels for vehicles.
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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)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007512739A JPWO2006106660A1 (ja) | 2005-04-01 | 2006-03-28 | 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 |
EP06730201A EP1870385A4 (en) | 2005-04-01 | 2006-03-28 | GLASS COMPOSITION FOR LAMPS, LAMP, BACKLIGHT UNIT AND METHOD FOR MANUFACTURING GLASS COMPOSITION FOR LAMPS |
US11/816,651 US20090141478A1 (en) | 2005-04-01 | 2006-03-28 | Glass composition for lamp, lamp, backlight unit and method for producing glass composition for lamp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-106023 | 2005-04-01 | ||
JP2005106023 | 2005-04-01 |
Publications (1)
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WO2006106660A1 true WO2006106660A1 (ja) | 2006-10-12 |
Family
ID=37073226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/306253 WO2006106660A1 (ja) | 2005-04-01 | 2006-03-28 | 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 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090141478A1 (ja) |
EP (1) | EP1870385A4 (ja) |
JP (1) | JPWO2006106660A1 (ja) |
KR (1) | KR20070114747A (ja) |
CN (1) | CN101151221A (ja) |
TW (1) | TW200642981A (ja) |
WO (1) | WO2006106660A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100108914A1 (en) * | 2008-10-30 | 2010-05-06 | Joerg Hinrich Fechner | Solarization-resistant glass composition having a UV-cutoff with a definite transmittance gradient and radiating device for a weathering apparatus containing a glass of said composition |
US7763559B2 (en) * | 2007-02-27 | 2010-07-27 | Avanstrate Inc. | Glass substrate for display and display |
JP2022521153A (ja) * | 2019-02-06 | 2022-04-06 | オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Spsによって製造された蛍光体分散ガラス(pig)における黒ずみの低減方法 |
WO2024043194A1 (ja) * | 2022-08-24 | 2024-02-29 | 日本電気硝子株式会社 | 強化ガラス板、強化ガラス板の製造方法及び強化用ガラス板 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2358656B1 (es) * | 2009-10-28 | 2012-01-13 | Abengoa Solar New Technologies, S.A. | Nuevas composiciones de vidrio y procedimiento para realizar una union vidrio-metal. |
CN101838106B (zh) * | 2010-05-14 | 2012-01-04 | 北京工业大学 | 一种光热发电用硼硅酸盐玻璃管 |
CN104176934A (zh) * | 2014-08-07 | 2014-12-03 | 宁波杰达模具机械有限公司 | 一种灯具玻璃的加工方法 |
US20190185367A1 (en) * | 2016-08-11 | 2019-06-20 | Corning Incorporated | Method and apparatus for laminated backlight unit |
JP7133563B2 (ja) | 2017-03-31 | 2022-09-08 | コーニング インコーポレイテッド | 高透過ガラス |
US11951713B2 (en) | 2020-12-10 | 2024-04-09 | Corning Incorporated | Glass with unique fracture behavior for vehicle windshield |
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JP2001220175A (ja) * | 1999-11-29 | 2001-08-14 | Nippon Electric Glass Co Ltd | 蛍光ランプ用タングステンシールガラス |
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DE102004027119A1 (de) * | 2003-06-06 | 2004-12-30 | Schott Ag | UV-Strahlung absorbierendes Glas mit geringer Absorption im sichtbaren Bereich, ein Verfahren zu seiner Herstellung sowie dessen Verwendung |
JP4795651B2 (ja) * | 2003-06-06 | 2011-10-19 | ショット アクチエンゲゼルシャフト | 特に蛍光ランプへ用いる高耐薬品性紫外線吸収ガラス、製造方法、及び使用方法 |
DE202005004487U1 (de) * | 2004-07-12 | 2005-11-24 | Schott Ag | System zur Hintergrundbeleuchtung von Displays oder Bildschirmen |
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2006
- 2006-03-28 WO PCT/JP2006/306253 patent/WO2006106660A1/ja active Application Filing
- 2006-03-28 CN CNA2006800101256A patent/CN101151221A/zh active Pending
- 2006-03-28 KR KR1020077021169A patent/KR20070114747A/ko not_active Application Discontinuation
- 2006-03-28 JP JP2007512739A patent/JPWO2006106660A1/ja active Pending
- 2006-03-28 US US11/816,651 patent/US20090141478A1/en not_active Abandoned
- 2006-03-28 EP EP06730201A patent/EP1870385A4/en not_active Withdrawn
- 2006-03-30 TW TW095111239A patent/TW200642981A/zh unknown
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JPH0855607A (ja) * | 1994-08-11 | 1996-02-27 | Ushio Inc | 平面発光装置 |
JP2001220175A (ja) * | 1999-11-29 | 2001-08-14 | Nippon Electric Glass Co Ltd | 蛍光ランプ用タングステンシールガラス |
WO2003097544A1 (de) * | 2002-05-16 | 2003-11-27 | Schott Ag | Borosilicatglas mit uv-blockung und seine verwendung sowie fluoreszenzlampe |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7763559B2 (en) * | 2007-02-27 | 2010-07-27 | Avanstrate Inc. | Glass substrate for display and display |
US8383530B2 (en) | 2007-02-27 | 2013-02-26 | Avanstrate Inc. | Glass substrate for display and display |
US8741794B2 (en) | 2007-02-27 | 2014-06-03 | Avanstrate Inc. | Glass substrate for display and display |
US20100108914A1 (en) * | 2008-10-30 | 2010-05-06 | Joerg Hinrich Fechner | Solarization-resistant glass composition having a UV-cutoff with a definite transmittance gradient and radiating device for a weathering apparatus containing a glass of said composition |
US8283269B2 (en) * | 2008-10-30 | 2012-10-09 | Schott Ag | Solarization-resistant glass composition having a UV-cutoff with a definite transmittance gradient and radiating device for a weathering apparatus containing a glass of said composition |
JP2022521153A (ja) * | 2019-02-06 | 2022-04-06 | オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Spsによって製造された蛍光体分散ガラス(pig)における黒ずみの低減方法 |
JP7250942B2 (ja) | 2019-02-06 | 2023-04-03 | エイエムエス-オスラム インターナショナル ゲーエムベーハー | Spsによって製造された蛍光体分散ガラス(pig)における黒ずみの低減方法 |
WO2024043194A1 (ja) * | 2022-08-24 | 2024-02-29 | 日本電気硝子株式会社 | 強化ガラス板、強化ガラス板の製造方法及び強化用ガラス板 |
Also Published As
Publication number | Publication date |
---|---|
CN101151221A (zh) | 2008-03-26 |
KR20070114747A (ko) | 2007-12-04 |
EP1870385A4 (en) | 2010-05-26 |
US20090141478A1 (en) | 2009-06-04 |
EP1870385A1 (en) | 2007-12-26 |
JPWO2006106660A1 (ja) | 2008-09-11 |
TW200642981A (en) | 2006-12-16 |
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