Patent ID: 8502182

Claim:
A memory device comprising: trenches extending in a first direction and including a first trench and a second trench; trenches extending in a second direction and including a third trench and a fourth trench, the first direction being perpendicular to the first direction; a first insulation material in the first trenches; a second insulation material in the second trenches; recesses formed between the first material and the second material, the recesses including a recess having a first sidewall portion formed by a portion of the first insulation material in the first trench, a second sidewall portion formed by a portion of the second insulation material in the third trench, a third sidewall portion formed by a portion of the first insulation material in the second trench, and a fourth sidewall portion formed by a portion of the second insulation material in the fourth trench; a diode including a first material of a first conductivity type formed within the recess and a second material of a second conductive type formed within the recess, wherein at least one of the first and second materials is completely formed in the recess, the second material overlying the first material; and a memory element coupled to the diode, the memory element including a material overlying the second material.