Abstract: Methods of forming plasma addressed liquid crystal display ribs are disclosed. An exemplary method includes introducing a glass paste which includes a curable medium into cavities formed in an intaglio collector to define rib structures, which are from the collector to a surface of the substrate, and removing the curable medium from the rib structures on the substrate surface to generate pores in the rib structures. The substrate having rib structures is then dipped into a solution containing an opaque pigment which is absorbed into the rib structure.

Abstract: Phosphate free, Er/Yb co-doped borosilicate glass compositions and optical devices made from said compositions are disclosed; said compositions comprising, for 100 parts by weight of: 60 to 70 parts by weight SiO2 or SiO2+GeO2 with SiO2 always being greater than 40 parts by weight, 8 to 12 parts by weight of B2O3, 10 to 25 parts by weight M2O wherein M2O is an alkali metal oxide, 0 to 3 parts by weight of BaO, 0.1 to 5 parts by weight Er2O3, and from 0.1 to 12 parts by weight of Yb2O3 and from 0 to less than 5 parts by weight F; and within which, the boron atoms are of tetrahedral spatial coordination.

Abstract: A method for applying a flame for depositing a doped layer to a wafer and chuck particularly adapted for suspending the wafer over the flame. The chuck includes a frame having an opening defined by an inner wall for receiving a wafer and a ledge surrounding at least a portion of a lower end of the opening for retaining a wafer placed into an upper end of the opening, and a suspension assembly for suspending the frame over a dopant-depositing flame such that the ledge is disposed between the flame and peripheral portions of the wafer. The inner wall and the ledge may be formed from a material having substantially the same thermal conduction and expansion characteristics as the wafer. The suspension assembly may be rotatable with respect to a dopant-depositing flame. The frame may have a plurality of openings, each for receiving a wafer. The suspension assembly may include a suspension member, and a support post connecting the suspension member to the frame.

Abstract: Methods of forming plasma addressed liquid crystal display ribs are disclosed. An exemplary method includes introducing a glass paste which includes a curable medium into cavities formed in an intaglio collector to define rib structures, which are from the collector to a surface of the substrate, and removing the curable medium from the rib structures on the substrate surface to generate pores in the rib structures. The substrate having rib structures is then dipped into a solution containing an opaque pigment which is absorbed into the rib structure.

Abstract: The principal object of the present invention is organic lens molds, constituted wholly or in part of at least one specific inorganic glass, advantageously strengthened by a chemical tempering or a thermal tempering. Said glass has the following composition, expressed in percentages by weight: SiO2 56-66, Al2O3 2.5-10, B2O3 0.5-7, Li2O 0-3, Na2O 8-15, K2O 3-12, with Li2O+Na2O+K2O 12-20, ZnO 2-12, MgO 0-3, TiO2 0-0.5, ZrO2 1-9, CaO 0-1, BaO 0-2, SrO 0-2, with MgO+CaO+SrO+BaO 0-5, Cl 0-0.5, As2O3+sb2O3 0-1. The invention also deals with novel inorganic glasses which have the above composition with a single exception relative to the Al2O3 content: Al2O3 2.5-4.

Abstract: A lead silicate glass frit composition particularly useful for the formation of dielectric layers and barrier ribs in plasma display panels.

Abstract: A method and apparatus for the flame hydrolysis deposition (FHD) of a core material on a substrate provides a holder for a substrate which is heated to a predetermined temperature selected to maintain the substrate temperature relatively constant during the FHD process. As a result, the thickness of a thin film applied to the substrate is relatively uniform as is the index of refraction of the core material deposited on the substrate. In one embodiment, a chuck for receiving a disk-shaped substrate wafer is supplied with an embedded electrical heater for maintaining the chuck temperature at from about 700° C. to about 900° C. In another embodiment, a gas heater positioned on a side of the chuck opposite the wafer mounting is provided to heat the chuck at substantially the same temperature.

Abstract: The invention relates to a glass composition intended for the manufacture of thermally stable substrates or panes, which comprises the following constituents in the following proportions by weight:______________________________________ SiO.sub.2 55-70% Al.sub.2 O.sub.3 0-5% or 5-10% ZrO.sub.2 5-10% or 0-5% B.sub.2 O.sub.3 0-3% Na.sub.2 O 2-6% K.sub.2 O 5-11% MgO 0-6% CaO 2-11% SrO 4-12% BaO 0-2% ______________________________________with the following relationships:Na.sub.2 O+K.sub.2 O.gtoreq.8%MgO+CaO+SrO+BaO>10%the said composition having a strain point which is in excess of 600.degree. C.

Abstract: Glasses for use as substrates for flat panel displays, having a composition consisting essentially of, as calculated in weight percent on an oxide basis, 38-56 SiO.sub.2, 10-28 Al.sub.2 O.sub.3, 0-4 Li.sub.2 O, 0-6 Na.sub.2 O, 0-15 K.sub.2 O, 4-18 CaO, 0-5 MgO, more than 8 and less than or equal to about 24 SrO, 0-2 ZrO.sub.2, said glass further consisting essentially of Na.sub.2 O+K.sub.2 O in total between about 6 and 18 weight percent.

Abstract: An optical signal amplifier comprising an optical waveguide fiber integrated by thallium ion exchange in a boron-free silicate glass doped with up to 5 weight % erbium oxide, the glass having a base composition, as calculated in weight percent on an oxide basis, consisting essentially of______________________________________ SiO.sub.2 38-67 Al.sub.2 O.sub.3 1.5-4.5 Na.sub.2 O 0-20 ZnO 1.5-8 K.sub.2 O 0-25 Li.sub.2 O 0-1 Na.sub.2 O + K.sub.2 O 15-30 PbO 0-37 BaO 0-7 P.sub.2 O.sub.5 0-10 P.sub.2 O.sub.

Abstract: This invention relates to glasses exhibiting refractive indices higher than 1.880, Abbe numbers of at least 29, densities lower than 4.1, good chemical durability and stability against devitrification, and an integrated transmission over the range of 380-800 nm at a thickness of 10 mm greater than 79%, the glasses consisting essentially, expressed in terms of weight percent on the oxide basis, of______________________________________ SiO.sub.2 5-8 B.sub.2 O.sub.3 15-21 ZrO.sub.2 3-10 TiO.sub.2 7-17 Nb.sub.2 O.sub.5 20.5-26 ZrO.sub.2 + TiO.sub.2 + Nb.sub.2 O.sub.5 29-45 La.sub.2 O.sub.3 19-32 Y.sub.2 O.sub.3 0-9 CaO 8-16 SrO 0-5 BaO 0-5 MgO 0-5 CaO + SrO + BaO + MgO 8-16 ZnO 0-5 Li.sub.2 O 0-2 Na.sub.2 O 0-2 K.sub.2 O 0-2 Li.sub.2 O + Na.sub.2 O + K.sub.2 O 0-2.

Abstract: A process for the production of an integrated optical circuit in a glass body by ion exchange between certain regions of the glass body and a metallic salt with the use of a mask defining the regions where the ion exchange occurs, wherein the mask comprises a layer of silicon and the mask is removed by an etching operation preceded by a cleansing operation.

Abstract: An optical signal amplifier with a waveguide path integrated into a glass body that is doped with optically active material. The signal to be amplified is transmitted through the waveguide and the pump power is coupled into the waveguide at one end. The waveguide comprises closely spaced adjacent guide lengths in the form of a spiral, zigzag paths between mirrors, or parallel paths with connecting semicircles at alternating ends of succeeding pairs of paths.