Multilayer circuit
AssigneeHewlett Packard Enterprise Development LP
InventorsDmitri Borisovich Strukov, Julien Borghetti
Life of this patent
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Abstract
A multilayer circuit (400) includes a base layer (205) which has a number of base vias (247, 415), a first overlying layer (215) formed on the base layer (205) and having a first routing section (210) and a second overlying layer (220) formed on the first overlying layer (215). The second overlying layer (220) has a second routing section (210) and is formed using the same set of masks. The first routing section (210) and the second routing section (210) form a unique electrical pathway (248) between a base via (247) and an element in an overlying layer. A method for forming a multilayer circuit is also provided.
Claims20
A multilayer circuit comprising,
- a base layer comprising a number of base vias;
- a first overlying layer formed on the base layer and having a first routing section;
- and
- a second overlying layer formed on the first overlying layer, the second overlying layer having a second routing section;
- the first overlying layer and second overlying layer being formed using the same set of masks and having a substantially similar structure;
- in which the first routing section and the second routing section form an electrical pathway between a base via and an element in an overlying layer.
A multilayer circuit comprising,
- a base layer comprising a number of base vias;
- a plurality of substantially similar layers overlying the base layer, in which each of the plurality of layers form a portion of a crossbar array and a portion of a routing section for connecting the base vias to the crossbar array, in which each of the plurality of layers is formed using a set of four masks, in which a first mask defines lower vias in the routing section and a second mask defines lower traces in the routing section and bit lines in the crossbar array, a third mask defines upper vias in the routing section and memory elements in the crossbar array, and a fourth mask defines upper traces in the routing section and word lines in the crossbar array.
Dependencies are inferred from the claim text.