18734 results about "Silicate" patented technology

An alkali aluminosilicate glass that is chemically strengthened and has a down-drawable composition. The glass has a melting temperature less than about 1650° C. and a liquidus viscosity of at least 130 kpoise and, in one embodiment, greater than 250 kpoise. The glass undergoes ion exchange at relatively low temperatures to a depth of at least 30 μm.

Methods for forming metal silicate films are provided. The methods comprise contacting a substrate with alternating and sequential vapor phase pulses of a metal source chemical, a silicon source chemical and an oxidizing agent. In preferred embodiments, an alkyl amide metal compound and a silicon halide compound are used. Methods according to preferred embodiments can be used to form hafnium silicate and zirconium silicate films with substantially uniform film coverages on substrate surfaces comprising high aspect ratio features (e.g., vias and / or trenches).

The invention relates to a light source comprising a light-emitting element, which emits light in a first spectral region, and comprising a luminophore, which comes from the group of alkaline-earth orthosilicates and which absorbs a portion of the light emitted by the light source and emits light in another spectral region. According to the invention, the luminophore is an alkaline-earth orthosilicate, which is activated with bivalent europium and whose composition consists of: (2-x-y)SrOx(Ba, Ca)O(1-a-b-c-d)SiO2aP2O5bAl2O3cB2O3dGeO2:yEu<2+> and / or (2-x-y)BaOx((Sr, Ca)O(1-a-b-c-d)SiO2aP2O5bAl2O3cB2O3dGeO2:yEu<2+>. The desired color (color temperature) can be easily adjusted by using a luminophore of the aforementioned type. The light source can contain an additional luminophore selected from the group of alkaline-earth aluminates, activated with bivalent europium and / or manganese, and / or can contain an additional red-emitting luminophore selected from the group Y(V, P, Si)O4:Eu or can contain alkaline-earth magnesium disilicate.

A chip-type light-emitting semiconductor device includes: a substrate 4; a blue LED 1 mounted on the substrate 4; and a luminescent layer 3 made of a mixture of yellow / yellowish phosphor particles 2 and a base material 13 (translucent resin). The yellow / yellowish phosphor particles 2 is a silicate phosphor which absorbs blue light emitted by the blue LED 1 to emit a fluorescence having a main emission peak in the wavelength range from 550 nm to 600 nm, inclusive, and which contains, as a main component, a compound expressed by the chemical formula: (Sr1−a1−b1−xBaa1Cab1Eux)2SiO4 (0≦a1≦0.3, 0≦b1≦0.8 and 0<x<1). The silicate phosphor particles disperse substantially evenly in the resin easily. As a result, excellent white light is obtained.

Tunable dielectric materials including an electronically tunable dielectric ceramic and a low loss glass additive are disclosed. The tunable dielectric may comprise a ferroelectric perskovite material such as barium strontium titanate. The glass additive may comprise boron, barium, calcium, lithium, manganese, silicon, zinc and / or aluminum-containing glasses having dielectric losses of less than 0.003 at 2 GHz. The materials may further include other additives such as non-tunable metal oxides and silicates. The low loss glass additive enables the materials to be sintered at relatively low temperatures while providing improved properties such as low microwave losses and high breakdown strengths.

A low dielectric constant, patterned, nanoporous material and a method of forming the material. The material is formed by depositing a layer onto a substrate, said layer comprising a reactive organosilicate material, a porogen, an initiator, and a solvent; exposing portions of the layer to energy (e.g., thermal energy or electromagnetic radiation) to change the solubility of portions of the organosilicate material with respect to the solvent; selectively removing more soluble portions of the layer to generate a relief pattern; and decomposing the porogen to thereby generate a nanoporous organosilicate layer.