Memory arrays and methods of forming electrical contacts

A memory array, comprising:

• multiple rows of projections extending upwardly from a semiconductor substrate;
• the projections being semiconductor material projections comprising transistor channel regions;
• terminal semiconductor projections of each row being elongated projections;
• electrically conductive lines along the rows of projections, individual of the electrically conductive lines wrapping around ends of the elongated projections and bifurcating into two branches that are along opposing sides of the elongated projection and the semiconductor material projections of each row;
• the electrically conductive lines being spaced from the projections by first dielectric material;
• second dielectric material within the elongated projections, and directly against the first dielectric material, the second dielectric material being compositionally different from the first dielectric material;
• and
• electrically conductive contacts extending through the second dielectric material;
• individual of the electrically conductive contacts being directly against the two branches along the opposing sides of the elongated projection.

A memory array, comprising:

• rows of semiconductor material projections;
• terminal semiconductor projections of each row being elongated projections;
• electrically conductive lines along the rows of semiconductor material projections, individual of the electrically conductive lines wrapping around ends of the elongated projections and bifurcating into two branches that are along opposing sides of the elongated projection and the semiconductor material projections of each row;
• the electrically conductive lines being spaced from the projections by first dielectric material;
• second dielectric material within the elongated projections, and directly against the first dielectric material, the second dielectric material being compositionally different from the first dielectric material;
• and
• electrically conductive structures extending through the second dielectric material;
• individual of the electrically conductive structures being directly against the two branches along the opposing sides of the elongated projection.