Electronic devices including pillars in array regions and non-array regions, and related systems and methods

An electronic device, comprising:

• memory pillars in an array region of an electronic device, the electronic device comprising multiple decks including alternating conductive materials and dielectric materials and the memory pillars in a first deck and a second deck of the multiple decks;
• dummy pillars in the second deck of a non-array region of the electronic device, the first deck of the non-array region lacking dummy pillars;
• a source below the first deck, the source operably coupled to the memory pillars and electrically isolated from the dummy pillars;
• and
• another conductive material in the first deck and the second deck of the non-array region.

A system comprising:

• an input device;
• an output device;
• a processor device operably coupled to the input device and the output device;
• and a memory device operably coupled to the processor device, the memory device comprising an array region and one or more non-array regions and the memory device comprising:
• upper pillars in an upper deck of the array region and of the one or more non-array regions;
• lower pillars in only a lower deck of the array region;
• and a conductive material in the upper deck and in the lower deck of the one or more non-array regions and wherein the one or more non-array regions is free of the lower pillars.