Patent ID: 11923227
Assignee: KYOCERA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An electrostatic chuck comprising:
an insulating base body comprising a predetermined surface; and
an electrode inside the base body, the electrode being layer shaped along the predetermined surface, wherein
an upper surface of the electrode and the base body are in contact, the upper surface facing a side where the predetermined surface is located, and
a gap which is rendered a vacuum or filled with a gas is interposed between a side surface of the electrode and the base body, wherein:
the electrode, in a plan view of the predetermined surface, comprises
a connection portion and
two extending portions extending alongside each other from the connection portion, and

the gap comprises
a first lateral side portion contacting a side surface of any of the extending portions and
a second lateral side portion which is in contact with a side surface of the connection portion, a width of the second lateral side portion from the side surface of the connection portion being broader than a width of the first lateral side portion from the side surface of the extending portions.