Diffused resistive memory cell with buried active zone
First Claim
1. A ReRAM device, comprising:
- a first contact;
a second contact; and
an active layer disposed between the first contact and the second contact, wherein the active layer comprises;
a first diffused zone adjacent the first contact, wherein the first diffused zone has a first composition;
a second diffused zone adjacent the second contact, wherein the second diffused zone has a second composition; and
an active zone disposed between the first diffused zone and the second diffused zone, wherein the active zone has a third composition different from the first composition of the first diffused zone.
6 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for non-volatile memory, and more specifically a ReRAM device with a buried resistive memory cell. The memory cell includes a first contact disposed on a substrate, an active layer, a second contact, a first diffused zone disposed within the active layer, a second diffused zone disposed within the active layer, and an active switching zone disposed within the active layer in between the first diffused zone and the second diffused zone. In one embodiment, the active zone may be doped by diffusion or ion implantation and/or may be fabricated utilizing a self-aligned process. In another embodiment, the memory cell may combine a deep implant and shallow diffusion well to create the active zone. The vertically and laterally isolated buried resistive memory cell concentrates the electric field away from the edges of the device and eliminates the effects of interface impurities and contaminants.
6 Citations
23 Claims
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1. A ReRAM device, comprising:
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a first contact; a second contact; and an active layer disposed between the first contact and the second contact, wherein the active layer comprises; a first diffused zone adjacent the first contact, wherein the first diffused zone has a first composition; a second diffused zone adjacent the second contact, wherein the second diffused zone has a second composition; and an active zone disposed between the first diffused zone and the second diffused zone, wherein the active zone has a third composition different from the first composition of the first diffused zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A ReRAM device, comprising:
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a first contact; a second contact; and an active layer, wherein the first contact and the second contact are disposed on the active layer, and wherein the active layer comprises; a first diffused zone adjacent the first contact, wherein the first diffused zone has a first composition; a second diffused zone adjacent the second contact, wherein the second diffused zone has a second composition; an active zone disposed between the first diffused zone and the second diffused zone, wherein the active zone has a third composition different from the first composition of the first diffused zone; and a non-active zone disposed on top of the active zone. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 23)
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18. A ReRAM device, comprising:
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a first contact; a second contact; and an active layer, wherein the first contact and the second contact are disposed on the active layer, and wherein the active layer comprises; a first diffused zone implanted within the active layer and adjacent the first contact, wherein the first diffused zone has a first composition; a second diffused zone implanted within the first diffused zone and adjacent the second contact, wherein the second diffused zone has a second composition; and an active zone disposed between the first diffused zone and the second diffused zone, wherein the active zone has a third composition different from the first composition of the first diffused zone. - View Dependent Claims (19, 20)
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21. A ReRAM device, comprising:
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a first contact; a second contact; and an active layer, wherein the active layer is disposed on the first contact and the second contact, and wherein the active layer comprises; a first diffused zone adjacent the first contact, wherein the first diffused zone has a first composition; a second diffused zone adjacent the second contact, wherein the second diffused zone has a second composition; an active zone disposed between the first diffused zone and the second diffused zone, wherein the active zone has a third composition different from the first composition of the first diffused zone; and a non-active zone disposed on top of the active zone. - View Dependent Claims (22)
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Specification