Abstract:
PROBLEM TO BE SOLVED: To provide alkali-free glass exhibiting desirable physical and chemical properties for use as substrates in liquid crystal displays.SOLUTION: The alkali-free glass comprises, in mole percent on an oxide basis, 64.0-72.0% SiO, 9.0-16.0% AlO, 1.0-5.0% BO, 1.0-7.5% MgO+LaO, 2.0-7.5% CaO, 0.0-4.5% SrO and 1.0-7.0% BaO, wherein a BaO/SrO ratio in mole percent is ≥2.0, and the glass has a strain point of ≥700°C.
Abstract translation:要解决的问题:提供具有理想的物理和化学性质的无碱玻璃,用作液晶显示器中的基底。 解决方案:无碱玻璃以氧化物为基准,以摩尔%计含有64.0-72.0%SiO,SBB =“POST”> 2 SB>,9.0-16.0%Al 2 SB> O 3 SB>,1.0-5.0%B 2 SB> O 3 SB>,1.0-7.5%的MgO + La 2 SB>,2.0-7.5%的CaO,0.0-4.5% SrO和1.0〜7.0%的BaO,其中BaO / SrO的摩尔百分数比为≥2.0,玻璃的应变点为≥700℃。 版权所有(C)2013,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic having aluminum titanate as a main component capable of being fired at a lower temperature, and used at a high temperature without affecting desired characteristics.SOLUTION: A method for making an aluminum titanate article comprises: formulating a batch of inorganic raw materials comprising sources of silica, alumina, and titania and sources of combinations of strontium and calcium; adding to the batch of inorganic raw materials an amount of 0.01 to 10%, as expressed on a weight percent oxide basis of a rare earth metal oxide; mixing the batch of inorganic raw materials and the rare earth metal oxide with processing aids selected from the group consisting of plasticizers, lubricants, binders, pore formers, and solvents, to form a plasticized mixture; shaping the plasticized mixture into a green body; heating the green body to a top temperature of less than 1,500°C, with a hold time sufficient to form a predominant phase of aluminum titanate.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical fiber for decreasing optical fiber loss to the lowest level.SOLUTION: An optical fiber includes a silica-based core having a first dopant for selecting from a group comprising germania, fluorine and mixtures thereof as well as a second dopant containing an alkali metal oxide composed of KO in a peak concentration of 20-1,000 ppm. The concentration of the alkali metal oxide varies with a radius of the optical fiber. The concentration of the alkali metal oxide dopant in the core and a clad is properly selected so that the core has the refractive index profile which is the peak relative refractive index ΔMAX of more than 0.2% with the cladding.
Abstract:
PROBLEM TO BE SOLVED: To provide alkali-free, boroalumino silicate glasses exhibiting desirable physical and chemical properties for use as substrates in flat panel display devices, such as, active matrix liquid crystal displays (AMLCDs).SOLUTION: The alkali-free glasses that possess high strain points and, thus, good dimensional stability and methods for making the same are provided. The high strain point glass can prevent panel distortion due to compaction/shrinkage during thermal processing subsequent to manufacturing of the glass.
Abstract:
PROBLEM TO BE SOLVED: To provide alkali-free glass exhibiting desirable physical and chemical properties for use as substrates in liquid crystal displays.SOLUTION: The alkali-free glass comprises SiO, AlO, BO, MgO, CaO, BaO and, optionally, SrO and has a composition satisfying the relationships of (a) [MgO]:[CaO]:[SrO+BaO]=1±0.15:1±0.15:1±0.15 and (b) 1.15≤Σ(MgO+CaO+SrO+BaO)/(AlO)≤1.55.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming glass without blisters, which are essentially arsenic- or antimony-free, in manufacturing processes containing refractory metal processing systems.SOLUTION: There is provided the method for controlling blister formation in a glass melt flowing through a system comprising one ore more refractory metal vessels by creating a blister index and determining the critical blister index value. The critical value of the blister index may be used to control the principal variables responsible for blister formation, including the water content in the glass melt, the concentration of reduced multivalent oxide compounds in the glass melt, and the hydrogen partial pressure of an atmosphere in contact with the outside surface of the refractory metal vessel for maintaining the blister index below a predetermined value.
Abstract:
PROBLEM TO BE SOLVED: To provide a low loss optical fiber and a method and an apparatus for manufacturing the same by appropriately selecting the concentration of alkali metal oxide dopant in a core and cladding.SOLUTION: There is provided the method for manufacturing the optical fiber in which a first glass rod is formed, having peak concentration of 20-1,000 ppm of alkali metal oxide comprising K0 and the first glass rod is inserted into a centerline hole of an optical fiber preform to form a composite preform.
Abstract:
PROBLEM TO BE SOLVED: To provide alkali-free glass which can be used to manufacture substrates for flat panel display devices, e.g., active matrix liquid crystal displays (AMLCDs).SOLUTION: The glass contains iron and tin as fining agents, and preferably is substantially free of arsenic and antimony. In a certain embodiment, the glass is also substantially free of barium. A method for manufacturing alkali-free glass sheets using a down-draw method (e.g., a fusion method) is also disclosed.
Abstract:
A glass consisting essentially of antimony oxide. An optically active glass consisting essentially of antimony oxide and up to about 4 mole % of an oxide of a rare earth element. A rare earth-doped, antimony oxide-containing glass including 0-99 mole % SiO2, 0-99 mole % GeO2, 0-75 mole % (Al, Ga)2O3, 0.5-99 mole % Sb2O3, and up to about 4 mole % of an oxide of a rare earth element. The oxide of the rare earth element may comprise Er2O3. The glass of the invention further includes fluorine, expressed as a metal fluoride. An optical energy-producing or light-amplifying device, in particular, an optical amplifier, comprising the above-described glass. The optical amplifier can be either a fiber amplifier or a planar amplifier, either of which may have a hybrid composition. Embodiments of the glass of the invention can be formed by conventional glass making techniques, while some of the high content antimony oxide embodiments are formed by splat or roller quenching.
Abstract:
A family of alkali-tungsten-tellurite glasses that consist essentially of, a s calculated in mole percent, 10-90 % TeO2, at least 5 % WO3 and at least 0.5 % R2O where R is Li, Na, K, Cs, Tl and mixtures, that may contain a lanthanide oxide as a dopant, in particular erbium oxide, and that, when so doped, is characterized by a fluorescent emission spectrum having a relatively broad FWHM value.