Patent ID: 11901187
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The semiconductor device of claim 10, wherein the hard mask structure further comprises:
a seventh hard mask layer on the sixth hard mask layer, wherein
the seventh hard mask layer comprises a layer containing Si, the element X, and an element Y,
the element Y is selected form the group including B, C, N, O, or P,
a content of the element X in the seventh hard mask layer decreases from a first surface of the seventh hard mask layer contacting the sixth hard mask layer to a second surface opposite to the first surface, and
a content of the element Y in the seventh hard mask layer increases from the first surface of the seventh hard mask layer to the second surface of the seventh hard mask layer.