Patent ID: 11862558
Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. The semiconductor device of claim 18, wherein:
the first staircase includes first stairs with a first step-down direction (X direction), and second stairs with a second step-down direction (−X direction), the first step-down direction being opposite to the second step-down direction, the first stairs and the second stairs converging at a first shared stair, the first stairs and the second stairs further having a third step-down direction (Y direction); and
the second staircase has third stairs with the first step-down direction, and fourth stairs with the second step-down direction, the third stairs and the fourth stairs converging at a second shared stair, the third stairs and the fourth stairs further having a fourth step-down direction (−Y direction) that is opposite to the third step-down direction.