Thin film integrated device
First Claim
1. A thin film integrated device wherein at least one thin film element is supported on an insulating substrate, characterized in that said thin film element includes a sputtered composite oxide thin film comprising major constituents of at least tantalum and aluminum.
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Accused Products
Abstract
In a thin film integrated device wherein thin film elements, such as thin film condensers, thin film field effect type transistors and thin film electroluminescent elements, which include insulating films (3, 7, 13, 15, 16) as one of their constitution elements, are formed on an insulating substrate; the insulating films are made of sputtered composite oxide films with at least tantalum and aluminum as major constituents. Since this sputtered composite oxide film has characteristics with a large dielectric constant and a breakdown field intensity and a small leakage current, if it is applied in the thin film elements, their operation characteristics can be increased and their reliability can be remarkably improved.
81 Citations
14 Claims
- 1. A thin film integrated device wherein at least one thin film element is supported on an insulating substrate, characterized in that said thin film element includes a sputtered composite oxide thin film comprising major constituents of at least tantalum and aluminum.
- 7. A thin film integrated device wherein a thin film field effect type transistor having at least a drain electrode, a gate electrode, a source electrode, a semiconductor layer and a gate insulation film is supported on an insulating substrate, characterized in that said gate insulating film is a sputtered composite oxide thin film of at least tantalum and aluminum as major constituents.
- 10. A thin film integrated device comprising a thin film light emitting element supported on an insulating substrate and having at least a pair of electrode layers, a phosphor thin film provided between these electrode layers and emitting light in response to a voltage applied between said electrode layers, and an insulation layer interposed between at least one of said electrode layers and said phosphor thin film, said device being characterized in that said insulation film is a sputtered composite oxide thin film of at least tantalum and aluminum as major constituents.
Specification