Optically interactive device packages and methods of assembly
First Claim
1. A method for simultaneously fabricating a plurality of packaged optically interactive electronic devices, comprising:
- providing a carrier substrate having an array of device attachment areas on a surface thereof, each of the device attachment areas comprising a chip attachment surface and at least one associated wire bonding location in communication with at least one conductive trace on the carrier substrate;
forming a layer of barrier material having an array of apertures therethrough on the surface of the carrier substrate, each of the apertures exposing the chip attachment surface and the at least one associated wire bonding location of one of the device attachment areas to form an array of chip cavities;
attaching an optically interactive electronic device having at least one bond pad on an active surface thereof to the chip attachment surface in at least one chip cavity of the array of chip cavities;
forming a wire bond between the at least one bond pad on the active surface of the optically interactive electronic device and the at least one associated wire bonding location in the at least one chip cavity;
covering the layer of barrier material with a unitary transparent cover having dimensions substantially equal to dimensions of the carrier substrate to form a package array; and
separating the package array along lines extending between the device attachment areas to form a plurality of individual optically interactive electronic device packages.
1 Assignment
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Accused Products
Abstract
An image sensor package and methods for simultaneously fabricating a plurality of such packages. A layer of barrier material comprising a matrix of raised walls is formed around chip attachment areas located in an array on a carrier substrate to create chip cavities. Image sensor chips are wire bonded within the chip cavities, and a unitary transparent cover is sealed in place over the entire assembly. The resultant image sensor package array is then singulated along lines running between the chip attachment areas and in parallel to the raised walls to provide individual image sensor packages. The layer of barrier material may be formed directly on the carrier substrate by molding methods or by depositing a series of curable layers of liquid or flowable material in a stacked fashion. Alternatively, the layer of barrier material may be preformed as a unitary frame and then secured to the carrier substrate.
255 Citations
57 Claims
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1. A method for simultaneously fabricating a plurality of packaged optically interactive electronic devices, comprising:
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providing a carrier substrate having an array of device attachment areas on a surface thereof, each of the device attachment areas comprising a chip attachment surface and at least one associated wire bonding location in communication with at least one conductive trace on the carrier substrate;
forming a layer of barrier material having an array of apertures therethrough on the surface of the carrier substrate, each of the apertures exposing the chip attachment surface and the at least one associated wire bonding location of one of the device attachment areas to form an array of chip cavities;
attaching an optically interactive electronic device having at least one bond pad on an active surface thereof to the chip attachment surface in at least one chip cavity of the array of chip cavities;
forming a wire bond between the at least one bond pad on the active surface of the optically interactive electronic device and the at least one associated wire bonding location in the at least one chip cavity;
covering the layer of barrier material with a unitary transparent cover having dimensions substantially equal to dimensions of the carrier substrate to form a package array; and
separating the package array along lines extending between the device attachment areas to form a plurality of individual optically interactive electronic device packages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. An optically interactive electronic device package array comprising:
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a carrier substrate having an array of device attachment areas on a surface thereof, each of the device attachment areas comprising a chip attachment surface and at least one associated wire bonding location in communication with at least one conductive trace on the carrier substrate;
a layer of barrier material having an array of apertures therethrough secured to the surface of the carrier substrate, each of the apertures exposing the chip attachment surface and the at least one associated wire bonding location of one of the device attachment areas to form an array of chip cavities;
an optically interactive electronic device having at least one bond pad on an active surface thereof attached to the chip attachment surface in at least one chip cavity;
a wire bond connecting the at least one bond pad on the active surface of the optically interactive electronic device and the at least one associated wire bonding location in the at least one chip cavity; and
a unitary transparent cover having dimensions substantially equal to those of the carrier substrate sealed to a top surface of the layer of barrier material. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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Specification