Display panel backplate
AssigneeCorning Incorporated
InventorsLinda R. Pinckney, Ronald L. Stewart, Donald M. Trotter, Jr.
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Abstract
A backplate for a display panel, a display panel embodying such backplate, and methods for producing the backplates. The backplate comprises a thin layer of a glass-ceramic that receives the active display material on its surface, the glass-ceramic being sufficiently refractory to withstand a processing temperature of at least 850° C., that has a coefficient of thermal expansion over about 40×10−7/° C., but not over about 100×10−7/° C., and that has a crystal phase selected from spinel, enstatite, wollastonite, diopside, mullite, alpha-quartz, sapphirine, forsterite, beta-quartz, other alkaline earth metal silicates and aluminosilicates and mixtures of these crystal phases.
Claims19
A backplate for a display panel comprising a thin layer of a glass-ceramic that receives the active display material on its surface, the glass-ceramic being sufficiently refractory to withstand a processing temperature of at least 850° C., having a coefficient of thermal expansion in the range of about 40-100×10−7/° C., and having a crystal phase selected from spinel, enstatite, alpha-quartz, sapphirine, forsterite, beta-quartz, wollastonite, diopside, mullite, other alkaline earth metal silicates, sanbonite, cristobalite and mixtures of these crystal phases, and being essentially free of alkali metal oxides.
A display device comprising a display panel having a backplate comprising a thin layer of a glass-ceramic that receives the active display material on its surface, the glass-ceramic being sufficiently refractory to withstand a processing temperature of at least 850° C., having a coefficient of thermal expansion in the range of about 40-100×10−7/° C., having a predominant crystal phase selected from spinel, enstatite, wollastonite, diopside, mullite, alpha-quartz, sapphirine, beta-quartz, other alkaline earth metal silicates and mixtures of these crystal phases, and being essentially free of alkali metal oxides.
A method of producing a backplate for a display panel which comprises melting the precursor glass for a glass-ceramic having a crystal phase selected from spinel, enstatite, wollastonite, diopside, mullite, alpha-quartz, sapphirine, forsterite, beta-quartz, alkaline earth metal silicates and mixtures of these crystal phases, forming a sheet of said glass, heat treating the glass layer to produce crystallization throughout the layer.
Dependencies are inferred from the claim text.