Patent ID: 11948797
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 2:
3. A method for manufacturing a semiconductor device comprising:
applying a resist on a semiconductor substrate;
forming an opening in the resist by exposure and development;
isotropically etching the semiconductor substrate using the resist at which the opening is formed as a mask, to form a recess having a wider width than a width of the opening;
performing baking to thermally shrink the resist to bend an eave portion of the resist upward so that a taper angle is in a range from 30° to 90°;
after the baking, forming a metal film on the resist and on a bottom surface of the recess; and
removing the resist and the metal film on the resist and leaving the metal film on the bottom surface of the recess as an electrode.