Electronic devices comprising memory cells comprising channel materials
AssigneeMicron Technology, Inc.
InventorGurtej S. Sandhu
Life of this patent
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Abstract
A memory cell is disclosed. The memory cell includes a transistor and a capacitor. The transistor includes a source region, a drain region, and a channel region including an indium gallium zinc oxide (IGZO, which is also known in the art as GIZO) material. The capacitor is in operative communication with the transistor, and the capacitor includes a top capacitor electrode and a bottom capacitor electrode. Also disclosed is a semiconductor device including a dynamic random access memory (DRAM) array of DRAM cells. Also disclosed is a system including a memory array of DRAM cells and methods for forming the disclosed memory cells and arrays of cells.
Claims19
An electronic device, comprising:
- a dynamic random access memory (DRAM) array comprising DRAM cells, at least one DRAM cell of the DRAM cells comprising:
- a transistor comprising a channel including an indium gallium zinc oxide material;
- a gate electrode laterally adjacent to the channel and separated from the channel by an insulative material, a portion of the indium gallium zinc oxide material in direct contact with a metal material vertically adjacent to the gate electrode, the metal material configured as a data line;
- and
- a capacitor vertically adjacent to the transistor.
An electronic device, comprising:
- memory cells, one or more of the memory cells comprising:
- a transistor comprising:
- a channel material comprising an indium gallium zinc oxide material, the channel material between a source region and a drain region;
- and
- an insulative material surrounding the channel material;
- a capacitor in operative communication with the transistor, the capacitor comprising:
- a capacitor electrode directly contacting the channel material and the insulative material, and the capacitor electrode oriented perpendicular to the channel material;
- and
- a gate electrode between the source region and the drain region;
- and
- a data line comprising a metal material vertically adjacent to the gate electrode, a portion of the indium gallium zinc oxide material directly contacting the metal material of the data line.
An electronic device, comprising:
- memory arrays comprising access lines, data lines, and memory cells, one or more of the memory cells of the memory arrays comprising:
- a transistor comprising:
- a channel material comprising an indium gallium zinc oxide material between a source region and a drain region;
- and
- an insulative material directly adjacent to the channel material, upper surfaces of the insulative material and the channel material substantially coplanar with one another;
- a gate electrode of an individual access line vertically adjacent to a respective data line, the indium gallium zinc oxide material vertically overlying and directly physically contacting the respective data line;
- and
- a capacitor in operative communication with the transistor, the capacitor comprising:
- a capacitor electrode directly contacting the channel material and the insulative material.
Dependencies are inferred from the claim text.