PROGRAMMABLE ROM USING TWO BONDED STRATA AND METHOD OF OPERATION
First Claim
1. A programmable read only memory, comprising:
- a first stratum including functional active devices and at least one non-programmed active device;
a second stratum including at least conductive routing to be associated with the at least one non-programmed active device; and
bonded inter-strata connections for coupling the first stratum to the second stratum, the bonded inter-strata connections including at least one bonded programmable inter-strata connection for programming the at least one non-programmed active device and for associating the conductive routing with the at least one non-programmed active device.
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Accused Products
Abstract
A read only memory implemented as a 3D integrated device has a first stratum, a second stratum, and bonded inter-strata connections for coupling the first stratum to the second stratum. The physical bonding between the two strata implements the programming of the read only memory. The stratum may be in wafer form or in die form. The first stratum includes functional active devices and at least one non-programmed active device. The second stratum includes at least conductive routing to be associated with the at least one non-programmed active device. The bonded inter-strata connections include at least one bonded programmable inter-strata connection for programming the at least one non-programmed active device and for providing conductive routing to the programmed active device. The two strata thus form a programmed ROM. Other types of programmable storage devices may be implemented by bonding the two strata.
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Citations
20 Claims
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1. A programmable read only memory, comprising:
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a first stratum including functional active devices and at least one non-programmed active device; a second stratum including at least conductive routing to be associated with the at least one non-programmed active device; and bonded inter-strata connections for coupling the first stratum to the second stratum, the bonded inter-strata connections including at least one bonded programmable inter-strata connection for programming the at least one non-programmed active device and for associating the conductive routing with the at least one non-programmed active device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A programmed storage device comprising:
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a first stratum comprising functional active devices and at least one non-programmed active device; a second stratum comprising at least conductive routing to be associated with the at least one non-programmed active device; and bonded inter-strata connections for coupling the first stratum to the second stratum, the bonded inter-strata connections comprising at least one bonded programmable inter-strata connection for programming the at least one non-programmed active device and for associating the conductive routing with the at least one non-programmed active device, wherein the at least one bonded programmable inter-strata connection comprises one of a closed programmable inter-strata connection and an open programmable inter-strata connection, further wherein the closed programmable inter-strata connection represents a first logic state and the open programmable inter-strata connection represents a second logic state, the second logic state being different from the first logic state, still further wherein the closed programmable inter-strata connection includes a presence of a micropad connection and wherein an open programmable inter-strata connection includes an absence of the micropad connection at a bonding interface, and wherein the first stratum comprises at least one of a semiconductor wafer and a semiconductor die and wherein the second stratum comprises at least one of a semiconductor wafer and a semiconductor die.
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16. A method of forming a programmable storage device comprising:
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providing a first stratum comprising functional active devices and at least one non-programmed active device; providing a second stratum comprising at least conductive routing to be associated with the at least one non-programmed active device; and bonding the first stratum to the second stratum using inter-strata connections to form bonded inter-strata connections, the bonded inter-strata connections comprising at least one bonded programmable inter-strata connection for programming the at least one non-programmed active device to become a programmed active device and for associating the conductive routing with the programmed active device. - View Dependent Claims (17, 18, 19, 20)
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Specification