Structure and method for hybrid optical package with glass top cover
AssigneeMaxim Integrated Products, Inc.
InventorsKUMAR NAGARAJAN, SESHASAYEE S. ANKIREDDI
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Abstract
An optical package containing optical sensor/detector pairs co-housed with a non-optical sensor and processes for fabricating the optical package are described herein. Traditional package structures require the use of clear mold compounds to protect the sensitive dies, but such compounds degrade with time and temperature. The optical package described herein uses a special glass top cover that is transparent in the entire electro-magnetic spectral region required by the contained dies.
Claims20
An optical package, comprising:
- a package substrate;
- an application specific integrated circuit die disposed on the package substrate, the application specific integrated circuit die including a detector;
- at least one non-optical sensor die disposed on the package substrate;
- a pre-molded polymer panel unit cell disposed on the package substrate, the pre-molded polymer panel unit cell including at least one cavity and at least one sidewall, the at least one sidewall configured to restrict cross talk between the application specific integrated circuit and the at least one non-optical sensor die;
- and
- a glass cover disposed on the pre-molded polymer panel unit cell.
A process for fabricating an optical package, comprising:
- placing an application specific integrated circuit die on a panel level substrate;
- placing at least one non-optical sensor die on the panel level substrate;
- bonding a pre-molded polymer panel to the panel level substrate;
- and
- bonding at least one glass cover to the pre-molded polymer panel.
A process for fabricating an optical package, comprising:
- placing an application specific integrated circuit die on a panel level substrate, the panel level substrate including at least one vent hole;
- placing at least one non-optical sensor die on the panel level substrate;
- placing a first adhesive film element on the panel level substrate;
- placing a pre-molded polymer panel on the first adhesive film element;
- placing a second adhesive film element on the pre-molded polymer panel;
- placing at least one glass cover on the second adhesive film element;
- and
- curing the first adhesive film element and the second adhesive film element.
Dependencies are inferred from the claim text.