Patent ID: 11931923
Assignee: KIOXIA CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC B  G  H | IPC B  G  H

Claim 11:
12. The method according to claim 11, further comprising:
forming an optical layer in the depression after removing the film,
the forming of the optical layer, including:
a fourth step of forming an optical layer, the optical layer including a first portion provided on the protrusion, a second portion provided on the depression, and a third portion provided on the second depression;
a fifth step of forming a third mask layer on the optical layer, the mask layer covering the first to third portions and having a protruding portion above the second portion;
a sixth step of partly removing the third mask layer to expose the first and third portions with covering the second portion, and
a seventh step of removing the first and third portions using the remainder of the third mask layer.