Method of producing free-standing net-shape sapphire
AssigneeRubicon Technology, Inc.
InventorsJohn P. CIRALDO, Jonathan B. LEVINE
Life of this patent
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Abstract
A method for producing one or more free-standing aluminum oxide windows or laminates by using a substrate of aluminum oxide and one or more sacrificial layers that each separates one or more deposited aluminum oxide layer. The sacrificial layer may be decomposed to producing one or more a free-standing aluminum oxide windows. The free-standing windows or laminates are substantially in finished form requiring little or no post growth processing. The produced windows or laminates may be hard, scratch resistant net-shaped sapphire ready for use in cell phones, electronic devices, a tablet computer, watches, glass applications, or the like.
Claims22
A super-lattice comprising:
- a substrate of aluminum oxide;
- a first sacrificial layer of metal oxide on the substrate;
- and
- a first layer of aluminum oxide deposited on the first sacrificial layer.
A process for producing net-shaped aluminum oxide windows comprising the steps of:
- providing an aluminum oxide substrate;
- layering a sacrificial layer on the substrate;
- creating an aluminum oxide layer on the sacrificial layer;
- and
- decomposing the sacrificial layer to create a free-standing aluminum oxide window or laminate.
A process for producing net-shaped aluminum oxide windows comprising the steps of:
- layering at least one sacrificial layer on a substrate;
- creating at least one aluminum oxide layer on the at least one sacrificial layer;
- and
- decomposing the at least one sacrificial layer to create a free-standing aluminum oxide window or laminate,
- wherein the at least one sacrificial layer has a geometrically compatible atomic structure with the at least one aluminum oxide layer and the substrate to promote pseudomorphic growth of any subsequent layers.
Dependencies are inferred from the claim text.